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linux/drivers/scsi/lpfc/lpfc_sli.c
James Smart d11e31ddb9 [SCSI] lpfc 8.3.3 : Fix a couple of spin_lock and memory issues and a crash 
Contains the following changes:
- Fixed error paths retaking a spin lock which they already hold
- Added code to free memory in a couple of error paths
- Added code to free RPI bit map while unloading driver
- Added code to write zero to memory object allocated through dma_alloc_coherent
- Fixed crash/hang with target or LUN resets

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-06-15 10:09:33 -05:00

11576 lines
357 KiB
C
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/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2004-2009 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
* www.emulex.com *
* Portions Copyright (C) 2004-2005 Christoph Hellwig *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of version 2 of the GNU General *
* Public License as published by the Free Software Foundation. *
* This program is distributed in the hope that it will be useful. *
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
* TO BE LEGALLY INVALID. See the GNU General Public License for *
* more details, a copy of which can be found in the file COPYING *
* included with this package. *
*******************************************************************/
#include <linux/blkdev.h>
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <scsi/scsi.h>
#include <scsi/scsi_cmnd.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
#include <scsi/fc/fc_fs.h>
#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_crtn.h"
#include "lpfc_logmsg.h"
#include "lpfc_compat.h"
#include "lpfc_debugfs.h"
#include "lpfc_vport.h"
/* There are only four IOCB completion types. */
typedef enum _lpfc_iocb_type {
LPFC_UNKNOWN_IOCB,
LPFC_UNSOL_IOCB,
LPFC_SOL_IOCB,
LPFC_ABORT_IOCB
} lpfc_iocb_type;
/* Provide function prototypes local to this module. */
static int lpfc_sli_issue_mbox_s4(struct lpfc_hba *, LPFC_MBOXQ_t *,
uint32_t);
static int lpfc_sli4_read_rev(struct lpfc_hba *, LPFC_MBOXQ_t *,
uint8_t *, uint32_t *);
static IOCB_t *
lpfc_get_iocb_from_iocbq(struct lpfc_iocbq *iocbq)
{
return &iocbq->iocb;
}
/**
* lpfc_sli4_wq_put - Put a Work Queue Entry on an Work Queue
* @q: The Work Queue to operate on.
* @wqe: The work Queue Entry to put on the Work queue.
*
* This routine will copy the contents of @wqe to the next available entry on
* the @q. This function will then ring the Work Queue Doorbell to signal the
* HBA to start processing the Work Queue Entry. This function returns 0 if
* successful. If no entries are available on @q then this function will return
* -ENOMEM.
* The caller is expected to hold the hbalock when calling this routine.
**/
static uint32_t
lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe *wqe)
{
union lpfc_wqe *temp_wqe = q->qe[q->host_index].wqe;
struct lpfc_register doorbell;
uint32_t host_index;
/* If the host has not yet processed the next entry then we are done */
if (((q->host_index + 1) % q->entry_count) == q->hba_index)
return -ENOMEM;
/* set consumption flag every once in a while */
if (!((q->host_index + 1) % LPFC_RELEASE_NOTIFICATION_INTERVAL))
bf_set(lpfc_wqe_gen_wqec, &wqe->generic, 1);
lpfc_sli_pcimem_bcopy(wqe, temp_wqe, q->entry_size);
/* Update the host index before invoking device */
host_index = q->host_index;
q->host_index = ((q->host_index + 1) % q->entry_count);
/* Ring Doorbell */
doorbell.word0 = 0;
bf_set(lpfc_wq_doorbell_num_posted, &doorbell, 1);
bf_set(lpfc_wq_doorbell_index, &doorbell, host_index);
bf_set(lpfc_wq_doorbell_id, &doorbell, q->queue_id);
writel(doorbell.word0, q->phba->sli4_hba.WQDBregaddr);
readl(q->phba->sli4_hba.WQDBregaddr); /* Flush */
return 0;
}
/**
* lpfc_sli4_wq_release - Updates internal hba index for WQ
* @q: The Work Queue to operate on.
* @index: The index to advance the hba index to.
*
* This routine will update the HBA index of a queue to reflect consumption of
* Work Queue Entries by the HBA. When the HBA indicates that it has consumed
* an entry the host calls this function to update the queue's internal
* pointers. This routine returns the number of entries that were consumed by
* the HBA.
**/
static uint32_t
lpfc_sli4_wq_release(struct lpfc_queue *q, uint32_t index)
{
uint32_t released = 0;
if (q->hba_index == index)
return 0;
do {
q->hba_index = ((q->hba_index + 1) % q->entry_count);
released++;
} while (q->hba_index != index);
return released;
}
/**
* lpfc_sli4_mq_put - Put a Mailbox Queue Entry on an Mailbox Queue
* @q: The Mailbox Queue to operate on.
* @wqe: The Mailbox Queue Entry to put on the Work queue.
*
* This routine will copy the contents of @mqe to the next available entry on
* the @q. This function will then ring the Work Queue Doorbell to signal the
* HBA to start processing the Work Queue Entry. This function returns 0 if
* successful. If no entries are available on @q then this function will return
* -ENOMEM.
* The caller is expected to hold the hbalock when calling this routine.
**/
static uint32_t
lpfc_sli4_mq_put(struct lpfc_queue *q, struct lpfc_mqe *mqe)
{
struct lpfc_mqe *temp_mqe = q->qe[q->host_index].mqe;
struct lpfc_register doorbell;
uint32_t host_index;
/* If the host has not yet processed the next entry then we are done */
if (((q->host_index + 1) % q->entry_count) == q->hba_index)
return -ENOMEM;
lpfc_sli_pcimem_bcopy(mqe, temp_mqe, q->entry_size);
/* Save off the mailbox pointer for completion */
q->phba->mbox = (MAILBOX_t *)temp_mqe;
/* Update the host index before invoking device */
host_index = q->host_index;
q->host_index = ((q->host_index + 1) % q->entry_count);
/* Ring Doorbell */
doorbell.word0 = 0;
bf_set(lpfc_mq_doorbell_num_posted, &doorbell, 1);
bf_set(lpfc_mq_doorbell_id, &doorbell, q->queue_id);
writel(doorbell.word0, q->phba->sli4_hba.MQDBregaddr);
readl(q->phba->sli4_hba.MQDBregaddr); /* Flush */
return 0;
}
/**
* lpfc_sli4_mq_release - Updates internal hba index for MQ
* @q: The Mailbox Queue to operate on.
*
* This routine will update the HBA index of a queue to reflect consumption of
* a Mailbox Queue Entry by the HBA. When the HBA indicates that it has consumed
* an entry the host calls this function to update the queue's internal
* pointers. This routine returns the number of entries that were consumed by
* the HBA.
**/
static uint32_t
lpfc_sli4_mq_release(struct lpfc_queue *q)
{
/* Clear the mailbox pointer for completion */
q->phba->mbox = NULL;
q->hba_index = ((q->hba_index + 1) % q->entry_count);
return 1;
}
/**
* lpfc_sli4_eq_get - Gets the next valid EQE from a EQ
* @q: The Event Queue to get the first valid EQE from
*
* This routine will get the first valid Event Queue Entry from @q, update
* the queue's internal hba index, and return the EQE. If no valid EQEs are in
* the Queue (no more work to do), or the Queue is full of EQEs that have been
* processed, but not popped back to the HBA then this routine will return NULL.
**/
static struct lpfc_eqe *
lpfc_sli4_eq_get(struct lpfc_queue *q)
{
struct lpfc_eqe *eqe = q->qe[q->hba_index].eqe;
/* If the next EQE is not valid then we are done */
if (!bf_get(lpfc_eqe_valid, eqe))
return NULL;
/* If the host has not yet processed the next entry then we are done */
if (((q->hba_index + 1) % q->entry_count) == q->host_index)
return NULL;
q->hba_index = ((q->hba_index + 1) % q->entry_count);
return eqe;
}
/**
* lpfc_sli4_eq_release - Indicates the host has finished processing an EQ
* @q: The Event Queue that the host has completed processing for.
* @arm: Indicates whether the host wants to arms this CQ.
*
* This routine will mark all Event Queue Entries on @q, from the last
* known completed entry to the last entry that was processed, as completed
* by clearing the valid bit for each completion queue entry. Then it will
* notify the HBA, by ringing the doorbell, that the EQEs have been processed.
* The internal host index in the @q will be updated by this routine to indicate
* that the host has finished processing the entries. The @arm parameter
* indicates that the queue should be rearmed when ringing the doorbell.
*
* This function will return the number of EQEs that were popped.
**/
uint32_t
lpfc_sli4_eq_release(struct lpfc_queue *q, bool arm)
{
uint32_t released = 0;
struct lpfc_eqe *temp_eqe;
struct lpfc_register doorbell;
/* while there are valid entries */
while (q->hba_index != q->host_index) {
temp_eqe = q->qe[q->host_index].eqe;
bf_set(lpfc_eqe_valid, temp_eqe, 0);
released++;
q->host_index = ((q->host_index + 1) % q->entry_count);
}
if (unlikely(released == 0 && !arm))
return 0;
/* ring doorbell for number popped */
doorbell.word0 = 0;
if (arm) {
bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1);
bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1);
}
bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released);
bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT);
bf_set(lpfc_eqcq_doorbell_eqid, &doorbell, q->queue_id);
writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr);
return released;
}
/**
* lpfc_sli4_cq_get - Gets the next valid CQE from a CQ
* @q: The Completion Queue to get the first valid CQE from
*
* This routine will get the first valid Completion Queue Entry from @q, update
* the queue's internal hba index, and return the CQE. If no valid CQEs are in
* the Queue (no more work to do), or the Queue is full of CQEs that have been
* processed, but not popped back to the HBA then this routine will return NULL.
**/
static struct lpfc_cqe *
lpfc_sli4_cq_get(struct lpfc_queue *q)
{
struct lpfc_cqe *cqe;
/* If the next CQE is not valid then we are done */
if (!bf_get(lpfc_cqe_valid, q->qe[q->hba_index].cqe))
return NULL;
/* If the host has not yet processed the next entry then we are done */
if (((q->hba_index + 1) % q->entry_count) == q->host_index)
return NULL;
cqe = q->qe[q->hba_index].cqe;
q->hba_index = ((q->hba_index + 1) % q->entry_count);
return cqe;
}
/**
* lpfc_sli4_cq_release - Indicates the host has finished processing a CQ
* @q: The Completion Queue that the host has completed processing for.
* @arm: Indicates whether the host wants to arms this CQ.
*
* This routine will mark all Completion queue entries on @q, from the last
* known completed entry to the last entry that was processed, as completed
* by clearing the valid bit for each completion queue entry. Then it will
* notify the HBA, by ringing the doorbell, that the CQEs have been processed.
* The internal host index in the @q will be updated by this routine to indicate
* that the host has finished processing the entries. The @arm parameter
* indicates that the queue should be rearmed when ringing the doorbell.
*
* This function will return the number of CQEs that were released.
**/
uint32_t
lpfc_sli4_cq_release(struct lpfc_queue *q, bool arm)
{
uint32_t released = 0;
struct lpfc_cqe *temp_qe;
struct lpfc_register doorbell;
/* while there are valid entries */
while (q->hba_index != q->host_index) {
temp_qe = q->qe[q->host_index].cqe;
bf_set(lpfc_cqe_valid, temp_qe, 0);
released++;
q->host_index = ((q->host_index + 1) % q->entry_count);
}
if (unlikely(released == 0 && !arm))
return 0;
/* ring doorbell for number popped */
doorbell.word0 = 0;
if (arm)
bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1);
bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released);
bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_COMPLETION);
bf_set(lpfc_eqcq_doorbell_cqid, &doorbell, q->queue_id);
writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr);
return released;
}
/**
* lpfc_sli4_rq_put - Put a Receive Buffer Queue Entry on a Receive Queue
* @q: The Header Receive Queue to operate on.
* @wqe: The Receive Queue Entry to put on the Receive queue.
*
* This routine will copy the contents of @wqe to the next available entry on
* the @q. This function will then ring the Receive Queue Doorbell to signal the
* HBA to start processing the Receive Queue Entry. This function returns the
* index that the rqe was copied to if successful. If no entries are available
* on @q then this function will return -ENOMEM.
* The caller is expected to hold the hbalock when calling this routine.
**/
static int
lpfc_sli4_rq_put(struct lpfc_queue *hq, struct lpfc_queue *dq,
struct lpfc_rqe *hrqe, struct lpfc_rqe *drqe)
{
struct lpfc_rqe *temp_hrqe = hq->qe[hq->host_index].rqe;
struct lpfc_rqe *temp_drqe = dq->qe[dq->host_index].rqe;
struct lpfc_register doorbell;
int put_index = hq->host_index;
if (hq->type != LPFC_HRQ || dq->type != LPFC_DRQ)
return -EINVAL;
if (hq->host_index != dq->host_index)
return -EINVAL;
/* If the host has not yet processed the next entry then we are done */
if (((hq->host_index + 1) % hq->entry_count) == hq->hba_index)
return -EBUSY;
lpfc_sli_pcimem_bcopy(hrqe, temp_hrqe, hq->entry_size);
lpfc_sli_pcimem_bcopy(drqe, temp_drqe, dq->entry_size);
/* Update the host index to point to the next slot */
hq->host_index = ((hq->host_index + 1) % hq->entry_count);
dq->host_index = ((dq->host_index + 1) % dq->entry_count);
/* Ring The Header Receive Queue Doorbell */
if (!(hq->host_index % LPFC_RQ_POST_BATCH)) {
doorbell.word0 = 0;
bf_set(lpfc_rq_doorbell_num_posted, &doorbell,
LPFC_RQ_POST_BATCH);
bf_set(lpfc_rq_doorbell_id, &doorbell, hq->queue_id);
writel(doorbell.word0, hq->phba->sli4_hba.RQDBregaddr);
}
return put_index;
}
/**
* lpfc_sli4_rq_release - Updates internal hba index for RQ
* @q: The Header Receive Queue to operate on.
*
* This routine will update the HBA index of a queue to reflect consumption of
* one Receive Queue Entry by the HBA. When the HBA indicates that it has
* consumed an entry the host calls this function to update the queue's
* internal pointers. This routine returns the number of entries that were
* consumed by the HBA.
**/
static uint32_t
lpfc_sli4_rq_release(struct lpfc_queue *hq, struct lpfc_queue *dq)
{
if ((hq->type != LPFC_HRQ) || (dq->type != LPFC_DRQ))
return 0;
hq->hba_index = ((hq->hba_index + 1) % hq->entry_count);
dq->hba_index = ((dq->hba_index + 1) % dq->entry_count);
return 1;
}
/**
* lpfc_cmd_iocb - Get next command iocb entry in the ring
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
*
* This function returns pointer to next command iocb entry
* in the command ring. The caller must hold hbalock to prevent
* other threads consume the next command iocb.
* SLI-2/SLI-3 provide different sized iocbs.
**/
static inline IOCB_t *
lpfc_cmd_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
return (IOCB_t *) (((char *) pring->cmdringaddr) +
pring->cmdidx * phba->iocb_cmd_size);
}
/**
* lpfc_resp_iocb - Get next response iocb entry in the ring
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
*
* This function returns pointer to next response iocb entry
* in the response ring. The caller must hold hbalock to make sure
* that no other thread consume the next response iocb.
* SLI-2/SLI-3 provide different sized iocbs.
**/
static inline IOCB_t *
lpfc_resp_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
return (IOCB_t *) (((char *) pring->rspringaddr) +
pring->rspidx * phba->iocb_rsp_size);
}
/**
* __lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool
* @phba: Pointer to HBA context object.
*
* This function is called with hbalock held. This function
* allocates a new driver iocb object from the iocb pool. If the
* allocation is successful, it returns pointer to the newly
* allocated iocb object else it returns NULL.
**/
static struct lpfc_iocbq *
__lpfc_sli_get_iocbq(struct lpfc_hba *phba)
{
struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
struct lpfc_iocbq * iocbq = NULL;
list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
return iocbq;
}
/**
* __lpfc_clear_active_sglq - Remove the active sglq for this XRI.
* @phba: Pointer to HBA context object.
* @xritag: XRI value.
*
* This function clears the sglq pointer from the array of acive
* sglq's. The xritag that is passed in is used to index into the
* array. Before the xritag can be used it needs to be adjusted
* by subtracting the xribase.
*
* Returns sglq ponter = success, NULL = Failure.
**/
static struct lpfc_sglq *
__lpfc_clear_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
{
uint16_t adj_xri;
struct lpfc_sglq *sglq;
adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base;
if (adj_xri > phba->sli4_hba.max_cfg_param.max_xri)
return NULL;
sglq = phba->sli4_hba.lpfc_sglq_active_list[adj_xri];
phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = NULL;
return sglq;
}
/**
* __lpfc_get_active_sglq - Get the active sglq for this XRI.
* @phba: Pointer to HBA context object.
* @xritag: XRI value.
*
* This function returns the sglq pointer from the array of acive
* sglq's. The xritag that is passed in is used to index into the
* array. Before the xritag can be used it needs to be adjusted
* by subtracting the xribase.
*
* Returns sglq ponter = success, NULL = Failure.
**/
static struct lpfc_sglq *
__lpfc_get_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
{
uint16_t adj_xri;
struct lpfc_sglq *sglq;
adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base;
if (adj_xri > phba->sli4_hba.max_cfg_param.max_xri)
return NULL;
sglq = phba->sli4_hba.lpfc_sglq_active_list[adj_xri];
return sglq;
}
/**
* __lpfc_sli_get_sglq - Allocates an iocb object from sgl pool
* @phba: Pointer to HBA context object.
*
* This function is called with hbalock held. This function
* Gets a new driver sglq object from the sglq list. If the
* list is not empty then it is successful, it returns pointer to the newly
* allocated sglq object else it returns NULL.
**/
static struct lpfc_sglq *
__lpfc_sli_get_sglq(struct lpfc_hba *phba)
{
struct list_head *lpfc_sgl_list = &phba->sli4_hba.lpfc_sgl_list;
struct lpfc_sglq *sglq = NULL;
uint16_t adj_xri;
list_remove_head(lpfc_sgl_list, sglq, struct lpfc_sglq, list);
adj_xri = sglq->sli4_xritag - phba->sli4_hba.max_cfg_param.xri_base;
phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = sglq;
return sglq;
}
/**
* lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool
* @phba: Pointer to HBA context object.
*
* This function is called with no lock held. This function
* allocates a new driver iocb object from the iocb pool. If the
* allocation is successful, it returns pointer to the newly
* allocated iocb object else it returns NULL.
**/
struct lpfc_iocbq *
lpfc_sli_get_iocbq(struct lpfc_hba *phba)
{
struct lpfc_iocbq * iocbq = NULL;
unsigned long iflags;
spin_lock_irqsave(&phba->hbalock, iflags);
iocbq = __lpfc_sli_get_iocbq(phba);
spin_unlock_irqrestore(&phba->hbalock, iflags);
return iocbq;
}
/**
* __lpfc_sli_release_iocbq_s4 - Release iocb to the iocb pool
* @phba: Pointer to HBA context object.
* @iocbq: Pointer to driver iocb object.
*
* This function is called with hbalock held to release driver
* iocb object to the iocb pool. The iotag in the iocb object
* does not change for each use of the iocb object. This function
* clears all other fields of the iocb object when it is freed.
* The sqlq structure that holds the xritag and phys and virtual
* mappings for the scatter gather list is retrieved from the
* active array of sglq. The get of the sglq pointer also clears
* the entry in the array. If the status of the IO indiactes that
* this IO was aborted then the sglq entry it put on the
* lpfc_abts_els_sgl_list until the CQ_ABORTED_XRI is received. If the
* IO has good status or fails for any other reason then the sglq
* entry is added to the free list (lpfc_sgl_list).
**/
static void
__lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
{
struct lpfc_sglq *sglq;
size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
unsigned long iflag;
if (iocbq->sli4_xritag == NO_XRI)
sglq = NULL;
else
sglq = __lpfc_clear_active_sglq(phba, iocbq->sli4_xritag);
if (sglq) {
if (iocbq->iocb_flag & LPFC_DRIVER_ABORTED
|| ((iocbq->iocb.ulpStatus == IOSTAT_LOCAL_REJECT)
&& (iocbq->iocb.un.ulpWord[4]
== IOERR_SLI_ABORTED))) {
spin_lock_irqsave(&phba->sli4_hba.abts_sgl_list_lock,
iflag);
list_add(&sglq->list,
&phba->sli4_hba.lpfc_abts_els_sgl_list);
spin_unlock_irqrestore(
&phba->sli4_hba.abts_sgl_list_lock, iflag);
} else
list_add(&sglq->list, &phba->sli4_hba.lpfc_sgl_list);
}
/*
* Clean all volatile data fields, preserve iotag and node struct.
*/
memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
iocbq->sli4_xritag = NO_XRI;
list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
}
/**
* __lpfc_sli_release_iocbq_s3 - Release iocb to the iocb pool
* @phba: Pointer to HBA context object.
* @iocbq: Pointer to driver iocb object.
*
* This function is called with hbalock held to release driver
* iocb object to the iocb pool. The iotag in the iocb object
* does not change for each use of the iocb object. This function
* clears all other fields of the iocb object when it is freed.
**/
static void
__lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
{
size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
/*
* Clean all volatile data fields, preserve iotag and node struct.
*/
memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
iocbq->sli4_xritag = NO_XRI;
list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
}
/**
* __lpfc_sli_release_iocbq - Release iocb to the iocb pool
* @phba: Pointer to HBA context object.
* @iocbq: Pointer to driver iocb object.
*
* This function is called with hbalock held to release driver
* iocb object to the iocb pool. The iotag in the iocb object
* does not change for each use of the iocb object. This function
* clears all other fields of the iocb object when it is freed.
**/
static void
__lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
{
phba->__lpfc_sli_release_iocbq(phba, iocbq);
}
/**
* lpfc_sli_release_iocbq - Release iocb to the iocb pool
* @phba: Pointer to HBA context object.
* @iocbq: Pointer to driver iocb object.
*
* This function is called with no lock held to release the iocb to
* iocb pool.
**/
void
lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
{
unsigned long iflags;
/*
* Clean all volatile data fields, preserve iotag and node struct.
*/
spin_lock_irqsave(&phba->hbalock, iflags);
__lpfc_sli_release_iocbq(phba, iocbq);
spin_unlock_irqrestore(&phba->hbalock, iflags);
}
/**
* lpfc_sli_cancel_iocbs - Cancel all iocbs from a list.
* @phba: Pointer to HBA context object.
* @iocblist: List of IOCBs.
* @ulpstatus: ULP status in IOCB command field.
* @ulpWord4: ULP word-4 in IOCB command field.
*
* This function is called with a list of IOCBs to cancel. It cancels the IOCB
* on the list by invoking the complete callback function associated with the
* IOCB with the provided @ulpstatus and @ulpword4 set to the IOCB commond
* fields.
**/
void
lpfc_sli_cancel_iocbs(struct lpfc_hba *phba, struct list_head *iocblist,
uint32_t ulpstatus, uint32_t ulpWord4)
{
struct lpfc_iocbq *piocb;
while (!list_empty(iocblist)) {
list_remove_head(iocblist, piocb, struct lpfc_iocbq, list);
if (!piocb->iocb_cmpl)
lpfc_sli_release_iocbq(phba, piocb);
else {
piocb->iocb.ulpStatus = ulpstatus;
piocb->iocb.un.ulpWord[4] = ulpWord4;
(piocb->iocb_cmpl) (phba, piocb, piocb);
}
}
return;
}
/**
* lpfc_sli_iocb_cmd_type - Get the iocb type
* @iocb_cmnd: iocb command code.
*
* This function is called by ring event handler function to get the iocb type.
* This function translates the iocb command to an iocb command type used to
* decide the final disposition of each completed IOCB.
* The function returns
* LPFC_UNKNOWN_IOCB if it is an unsupported iocb
* LPFC_SOL_IOCB if it is a solicited iocb completion
* LPFC_ABORT_IOCB if it is an abort iocb
* LPFC_UNSOL_IOCB if it is an unsolicited iocb
*
* The caller is not required to hold any lock.
**/
static lpfc_iocb_type
lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
{
lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
if (iocb_cmnd > CMD_MAX_IOCB_CMD)
return 0;
switch (iocb_cmnd) {
case CMD_XMIT_SEQUENCE_CR:
case CMD_XMIT_SEQUENCE_CX:
case CMD_XMIT_BCAST_CN:
case CMD_XMIT_BCAST_CX:
case CMD_ELS_REQUEST_CR:
case CMD_ELS_REQUEST_CX:
case CMD_CREATE_XRI_CR:
case CMD_CREATE_XRI_CX:
case CMD_GET_RPI_CN:
case CMD_XMIT_ELS_RSP_CX:
case CMD_GET_RPI_CR:
case CMD_FCP_IWRITE_CR:
case CMD_FCP_IWRITE_CX:
case CMD_FCP_IREAD_CR:
case CMD_FCP_IREAD_CX:
case CMD_FCP_ICMND_CR:
case CMD_FCP_ICMND_CX:
case CMD_FCP_TSEND_CX:
case CMD_FCP_TRSP_CX:
case CMD_FCP_TRECEIVE_CX:
case CMD_FCP_AUTO_TRSP_CX:
case CMD_ADAPTER_MSG:
case CMD_ADAPTER_DUMP:
case CMD_XMIT_SEQUENCE64_CR:
case CMD_XMIT_SEQUENCE64_CX:
case CMD_XMIT_BCAST64_CN:
case CMD_XMIT_BCAST64_CX:
case CMD_ELS_REQUEST64_CR:
case CMD_ELS_REQUEST64_CX:
case CMD_FCP_IWRITE64_CR:
case CMD_FCP_IWRITE64_CX:
case CMD_FCP_IREAD64_CR:
case CMD_FCP_IREAD64_CX:
case CMD_FCP_ICMND64_CR:
case CMD_FCP_ICMND64_CX:
case CMD_FCP_TSEND64_CX:
case CMD_FCP_TRSP64_CX:
case CMD_FCP_TRECEIVE64_CX:
case CMD_GEN_REQUEST64_CR:
case CMD_GEN_REQUEST64_CX:
case CMD_XMIT_ELS_RSP64_CX:
case DSSCMD_IWRITE64_CR:
case DSSCMD_IWRITE64_CX:
case DSSCMD_IREAD64_CR:
case DSSCMD_IREAD64_CX:
case DSSCMD_INVALIDATE_DEK:
case DSSCMD_SET_KEK:
case DSSCMD_GET_KEK_ID:
case DSSCMD_GEN_XFER:
type = LPFC_SOL_IOCB;
break;
case CMD_ABORT_XRI_CN:
case CMD_ABORT_XRI_CX:
case CMD_CLOSE_XRI_CN:
case CMD_CLOSE_XRI_CX:
case CMD_XRI_ABORTED_CX:
case CMD_ABORT_MXRI64_CN:
type = LPFC_ABORT_IOCB;
break;
case CMD_RCV_SEQUENCE_CX:
case CMD_RCV_ELS_REQ_CX:
case CMD_RCV_SEQUENCE64_CX:
case CMD_RCV_ELS_REQ64_CX:
case CMD_ASYNC_STATUS:
case CMD_IOCB_RCV_SEQ64_CX:
case CMD_IOCB_RCV_ELS64_CX:
case CMD_IOCB_RCV_CONT64_CX:
case CMD_IOCB_RET_XRI64_CX:
type = LPFC_UNSOL_IOCB;
break;
case CMD_IOCB_XMIT_MSEQ64_CR:
case CMD_IOCB_XMIT_MSEQ64_CX:
case CMD_IOCB_RCV_SEQ_LIST64_CX:
case CMD_IOCB_RCV_ELS_LIST64_CX:
case CMD_IOCB_CLOSE_EXTENDED_CN:
case CMD_IOCB_ABORT_EXTENDED_CN:
case CMD_IOCB_RET_HBQE64_CN:
case CMD_IOCB_FCP_IBIDIR64_CR:
case CMD_IOCB_FCP_IBIDIR64_CX:
case CMD_IOCB_FCP_ITASKMGT64_CX:
case CMD_IOCB_LOGENTRY_CN:
case CMD_IOCB_LOGENTRY_ASYNC_CN:
printk("%s - Unhandled SLI-3 Command x%x\n",
__func__, iocb_cmnd);
type = LPFC_UNKNOWN_IOCB;
break;
default:
type = LPFC_UNKNOWN_IOCB;
break;
}
return type;
}
/**
* lpfc_sli_ring_map - Issue config_ring mbox for all rings
* @phba: Pointer to HBA context object.
*
* This function is called from SLI initialization code
* to configure every ring of the HBA's SLI interface. The
* caller is not required to hold any lock. This function issues
* a config_ring mailbox command for each ring.
* This function returns zero if successful else returns a negative
* error code.
**/
static int
lpfc_sli_ring_map(struct lpfc_hba *phba)
{
struct lpfc_sli *psli = &phba->sli;
LPFC_MBOXQ_t *pmb;
MAILBOX_t *pmbox;
int i, rc, ret = 0;
pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmb)
return -ENOMEM;
pmbox = &pmb->u.mb;
phba->link_state = LPFC_INIT_MBX_CMDS;
for (i = 0; i < psli->num_rings; i++) {
lpfc_config_ring(phba, i, pmb);
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0446 Adapter failed to init (%d), "
"mbxCmd x%x CFG_RING, mbxStatus x%x, "
"ring %d\n",
rc, pmbox->mbxCommand,
pmbox->mbxStatus, i);
phba->link_state = LPFC_HBA_ERROR;
ret = -ENXIO;
break;
}
}
mempool_free(pmb, phba->mbox_mem_pool);
return ret;
}
/**
* lpfc_sli_ringtxcmpl_put - Adds new iocb to the txcmplq
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @piocb: Pointer to the driver iocb object.
*
* This function is called with hbalock held. The function adds the
* new iocb to txcmplq of the given ring. This function always returns
* 0. If this function is called for ELS ring, this function checks if
* there is a vport associated with the ELS command. This function also
* starts els_tmofunc timer if this is an ELS command.
**/
static int
lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *piocb)
{
list_add_tail(&piocb->list, &pring->txcmplq);
pring->txcmplq_cnt++;
if ((unlikely(pring->ringno == LPFC_ELS_RING)) &&
(piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
(piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
if (!piocb->vport)
BUG();
else
mod_timer(&piocb->vport->els_tmofunc,
jiffies + HZ * (phba->fc_ratov << 1));
}
return 0;
}
/**
* lpfc_sli_ringtx_get - Get first element of the txq
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
*
* This function is called with hbalock held to get next
* iocb in txq of the given ring. If there is any iocb in
* the txq, the function returns first iocb in the list after
* removing the iocb from the list, else it returns NULL.
**/
static struct lpfc_iocbq *
lpfc_sli_ringtx_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
struct lpfc_iocbq *cmd_iocb;
list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list);
if (cmd_iocb != NULL)
pring->txq_cnt--;
return cmd_iocb;
}
/**
* lpfc_sli_next_iocb_slot - Get next iocb slot in the ring
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
*
* This function is called with hbalock held and the caller must post the
* iocb without releasing the lock. If the caller releases the lock,
* iocb slot returned by the function is not guaranteed to be available.
* The function returns pointer to the next available iocb slot if there
* is available slot in the ring, else it returns NULL.
* If the get index of the ring is ahead of the put index, the function
* will post an error attention event to the worker thread to take the
* HBA to offline state.
**/
static IOCB_t *
lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
uint32_t max_cmd_idx = pring->numCiocb;
if ((pring->next_cmdidx == pring->cmdidx) &&
(++pring->next_cmdidx >= max_cmd_idx))
pring->next_cmdidx = 0;
if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
if (unlikely(pring->local_getidx >= max_cmd_idx)) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0315 Ring %d issue: portCmdGet %d "
"is bigger than cmd ring %d\n",
pring->ringno,
pring->local_getidx, max_cmd_idx);
phba->link_state = LPFC_HBA_ERROR;
/*
* All error attention handlers are posted to
* worker thread
*/
phba->work_ha |= HA_ERATT;
phba->work_hs = HS_FFER3;
lpfc_worker_wake_up(phba);
return NULL;
}
if (pring->local_getidx == pring->next_cmdidx)
return NULL;
}
return lpfc_cmd_iocb(phba, pring);
}
/**
* lpfc_sli_next_iotag - Get an iotag for the iocb
* @phba: Pointer to HBA context object.
* @iocbq: Pointer to driver iocb object.
*
* This function gets an iotag for the iocb. If there is no unused iotag and
* the iocbq_lookup_len < 0xffff, this function allocates a bigger iotag_lookup
* array and assigns a new iotag.
* The function returns the allocated iotag if successful, else returns zero.
* Zero is not a valid iotag.
* The caller is not required to hold any lock.
**/
uint16_t
lpfc_sli_next_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
{
struct lpfc_iocbq **new_arr;
struct lpfc_iocbq **old_arr;
size_t new_len;
struct lpfc_sli *psli = &phba->sli;
uint16_t iotag;
spin_lock_irq(&phba->hbalock);
iotag = psli->last_iotag;
if(++iotag < psli->iocbq_lookup_len) {
psli->last_iotag = iotag;
psli->iocbq_lookup[iotag] = iocbq;
spin_unlock_irq(&phba->hbalock);
iocbq->iotag = iotag;
return iotag;
} else if (psli->iocbq_lookup_len < (0xffff
- LPFC_IOCBQ_LOOKUP_INCREMENT)) {
new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
spin_unlock_irq(&phba->hbalock);
new_arr = kzalloc(new_len * sizeof (struct lpfc_iocbq *),
GFP_KERNEL);
if (new_arr) {
spin_lock_irq(&phba->hbalock);
old_arr = psli->iocbq_lookup;
if (new_len <= psli->iocbq_lookup_len) {
/* highly unprobable case */
kfree(new_arr);
iotag = psli->last_iotag;
if(++iotag < psli->iocbq_lookup_len) {
psli->last_iotag = iotag;
psli->iocbq_lookup[iotag] = iocbq;
spin_unlock_irq(&phba->hbalock);
iocbq->iotag = iotag;
return iotag;
}
spin_unlock_irq(&phba->hbalock);
return 0;
}
if (psli->iocbq_lookup)
memcpy(new_arr, old_arr,
((psli->last_iotag + 1) *
sizeof (struct lpfc_iocbq *)));
psli->iocbq_lookup = new_arr;
psli->iocbq_lookup_len = new_len;
psli->last_iotag = iotag;
psli->iocbq_lookup[iotag] = iocbq;
spin_unlock_irq(&phba->hbalock);
iocbq->iotag = iotag;
kfree(old_arr);
return iotag;
}
} else
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_ERR,LOG_SLI,
"0318 Failed to allocate IOTAG.last IOTAG is %d\n",
psli->last_iotag);
return 0;
}
/**
* lpfc_sli_submit_iocb - Submit an iocb to the firmware
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @iocb: Pointer to iocb slot in the ring.
* @nextiocb: Pointer to driver iocb object which need to be
* posted to firmware.
*
* This function is called with hbalock held to post a new iocb to
* the firmware. This function copies the new iocb to ring iocb slot and
* updates the ring pointers. It adds the new iocb to txcmplq if there is
* a completion call back for this iocb else the function will free the
* iocb object.
**/
static void
lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
{
/*
* Set up an iotag
*/
nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
if (pring->ringno == LPFC_ELS_RING) {
lpfc_debugfs_slow_ring_trc(phba,
"IOCB cmd ring: wd4:x%08x wd6:x%08x wd7:x%08x",
*(((uint32_t *) &nextiocb->iocb) + 4),
*(((uint32_t *) &nextiocb->iocb) + 6),
*(((uint32_t *) &nextiocb->iocb) + 7));
}
/*
* Issue iocb command to adapter
*/
lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, phba->iocb_cmd_size);
wmb();
pring->stats.iocb_cmd++;
/*
* If there is no completion routine to call, we can release the
* IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
* that have no rsp ring completion, iocb_cmpl MUST be NULL.
*/
if (nextiocb->iocb_cmpl)
lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
else
__lpfc_sli_release_iocbq(phba, nextiocb);
/*
* Let the HBA know what IOCB slot will be the next one the
* driver will put a command into.
*/
pring->cmdidx = pring->next_cmdidx;
writel(pring->cmdidx, &phba->host_gp[pring->ringno].cmdPutInx);
}
/**
* lpfc_sli_update_full_ring - Update the chip attention register
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
*
* The caller is not required to hold any lock for calling this function.
* This function updates the chip attention bits for the ring to inform firmware
* that there are pending work to be done for this ring and requests an
* interrupt when there is space available in the ring. This function is
* called when the driver is unable to post more iocbs to the ring due
* to unavailability of space in the ring.
**/
static void
lpfc_sli_update_full_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
int ringno = pring->ringno;
pring->flag |= LPFC_CALL_RING_AVAILABLE;
wmb();
/*
* Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
* The HBA will tell us when an IOCB entry is available.
*/
writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
readl(phba->CAregaddr); /* flush */
pring->stats.iocb_cmd_full++;
}
/**
* lpfc_sli_update_ring - Update chip attention register
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
*
* This function updates the chip attention register bit for the
* given ring to inform HBA that there is more work to be done
* in this ring. The caller is not required to hold any lock.
**/
static void
lpfc_sli_update_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
int ringno = pring->ringno;
/*
* Tell the HBA that there is work to do in this ring.
*/
if (!(phba->sli3_options & LPFC_SLI3_CRP_ENABLED)) {
wmb();
writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
readl(phba->CAregaddr); /* flush */
}
}
/**
* lpfc_sli_resume_iocb - Process iocbs in the txq
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
*
* This function is called with hbalock held to post pending iocbs
* in the txq to the firmware. This function is called when driver
* detects space available in the ring.
**/
static void
lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
IOCB_t *iocb;
struct lpfc_iocbq *nextiocb;
/*
* Check to see if:
* (a) there is anything on the txq to send
* (b) link is up
* (c) link attention events can be processed (fcp ring only)
* (d) IOCB processing is not blocked by the outstanding mbox command.
*/
if (pring->txq_cnt &&
lpfc_is_link_up(phba) &&
(pring->ringno != phba->sli.fcp_ring ||
phba->sli.sli_flag & LPFC_PROCESS_LA)) {
while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
(nextiocb = lpfc_sli_ringtx_get(phba, pring)))
lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
if (iocb)
lpfc_sli_update_ring(phba, pring);
else
lpfc_sli_update_full_ring(phba, pring);
}
return;
}
/**
* lpfc_sli_next_hbq_slot - Get next hbq entry for the HBQ
* @phba: Pointer to HBA context object.
* @hbqno: HBQ number.
*
* This function is called with hbalock held to get the next
* available slot for the given HBQ. If there is free slot
* available for the HBQ it will return pointer to the next available
* HBQ entry else it will return NULL.
**/
static struct lpfc_hbq_entry *
lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno)
{
struct hbq_s *hbqp = &phba->hbqs[hbqno];
if (hbqp->next_hbqPutIdx == hbqp->hbqPutIdx &&
++hbqp->next_hbqPutIdx >= hbqp->entry_count)
hbqp->next_hbqPutIdx = 0;
if (unlikely(hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)) {
uint32_t raw_index = phba->hbq_get[hbqno];
uint32_t getidx = le32_to_cpu(raw_index);
hbqp->local_hbqGetIdx = getidx;
if (unlikely(hbqp->local_hbqGetIdx >= hbqp->entry_count)) {
lpfc_printf_log(phba, KERN_ERR,
LOG_SLI | LOG_VPORT,
"1802 HBQ %d: local_hbqGetIdx "
"%u is > than hbqp->entry_count %u\n",
hbqno, hbqp->local_hbqGetIdx,
hbqp->entry_count);
phba->link_state = LPFC_HBA_ERROR;
return NULL;
}
if (hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)
return NULL;
}
return (struct lpfc_hbq_entry *) phba->hbqs[hbqno].hbq_virt +
hbqp->hbqPutIdx;
}
/**
* lpfc_sli_hbqbuf_free_all - Free all the hbq buffers
* @phba: Pointer to HBA context object.
*
* This function is called with no lock held to free all the
* hbq buffers while uninitializing the SLI interface. It also
* frees the HBQ buffers returned by the firmware but not yet
* processed by the upper layers.
**/
void
lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba)
{
struct lpfc_dmabuf *dmabuf, *next_dmabuf;
struct hbq_dmabuf *hbq_buf;
unsigned long flags;
int i, hbq_count;
uint32_t hbqno;
hbq_count = lpfc_sli_hbq_count();
/* Return all memory used by all HBQs */
spin_lock_irqsave(&phba->hbalock, flags);
for (i = 0; i < hbq_count; ++i) {
list_for_each_entry_safe(dmabuf, next_dmabuf,
&phba->hbqs[i].hbq_buffer_list, list) {
hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf);
list_del(&hbq_buf->dbuf.list);
(phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf);
}
phba->hbqs[i].buffer_count = 0;
}
/* Return all HBQ buffer that are in-fly */
list_for_each_entry_safe(dmabuf, next_dmabuf, &phba->rb_pend_list,
list) {
hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf);
list_del(&hbq_buf->dbuf.list);
if (hbq_buf->tag == -1) {
(phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer)
(phba, hbq_buf);
} else {
hbqno = hbq_buf->tag >> 16;
if (hbqno >= LPFC_MAX_HBQS)
(phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer)
(phba, hbq_buf);
else
(phba->hbqs[hbqno].hbq_free_buffer)(phba,
hbq_buf);
}
}
/* Mark the HBQs not in use */
phba->hbq_in_use = 0;
spin_unlock_irqrestore(&phba->hbalock, flags);
}
/**
* lpfc_sli_hbq_to_firmware - Post the hbq buffer to firmware
* @phba: Pointer to HBA context object.
* @hbqno: HBQ number.
* @hbq_buf: Pointer to HBQ buffer.
*
* This function is called with the hbalock held to post a
* hbq buffer to the firmware. If the function finds an empty
* slot in the HBQ, it will post the buffer. The function will return
* pointer to the hbq entry if it successfully post the buffer
* else it will return NULL.
**/
static int
lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno,
struct hbq_dmabuf *hbq_buf)
{
return phba->lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buf);
}
/**
* lpfc_sli_hbq_to_firmware_s3 - Post the hbq buffer to SLI3 firmware
* @phba: Pointer to HBA context object.
* @hbqno: HBQ number.
* @hbq_buf: Pointer to HBQ buffer.
*
* This function is called with the hbalock held to post a hbq buffer to the
* firmware. If the function finds an empty slot in the HBQ, it will post the
* buffer and place it on the hbq_buffer_list. The function will return zero if
* it successfully post the buffer else it will return an error.
**/
static int
lpfc_sli_hbq_to_firmware_s3(struct lpfc_hba *phba, uint32_t hbqno,
struct hbq_dmabuf *hbq_buf)
{
struct lpfc_hbq_entry *hbqe;
dma_addr_t physaddr = hbq_buf->dbuf.phys;
/* Get next HBQ entry slot to use */
hbqe = lpfc_sli_next_hbq_slot(phba, hbqno);
if (hbqe) {
struct hbq_s *hbqp = &phba->hbqs[hbqno];
hbqe->bde.addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
hbqe->bde.addrLow = le32_to_cpu(putPaddrLow(physaddr));
hbqe->bde.tus.f.bdeSize = hbq_buf->size;
hbqe->bde.tus.f.bdeFlags = 0;
hbqe->bde.tus.w = le32_to_cpu(hbqe->bde.tus.w);
hbqe->buffer_tag = le32_to_cpu(hbq_buf->tag);
/* Sync SLIM */
hbqp->hbqPutIdx = hbqp->next_hbqPutIdx;
writel(hbqp->hbqPutIdx, phba->hbq_put + hbqno);
/* flush */
readl(phba->hbq_put + hbqno);
list_add_tail(&hbq_buf->dbuf.list, &hbqp->hbq_buffer_list);
return 0;
} else
return -ENOMEM;
}
/**
* lpfc_sli_hbq_to_firmware_s4 - Post the hbq buffer to SLI4 firmware
* @phba: Pointer to HBA context object.
* @hbqno: HBQ number.
* @hbq_buf: Pointer to HBQ buffer.
*
* This function is called with the hbalock held to post an RQE to the SLI4
* firmware. If able to post the RQE to the RQ it will queue the hbq entry to
* the hbq_buffer_list and return zero, otherwise it will return an error.
**/
static int
lpfc_sli_hbq_to_firmware_s4(struct lpfc_hba *phba, uint32_t hbqno,
struct hbq_dmabuf *hbq_buf)
{
int rc;
struct lpfc_rqe hrqe;
struct lpfc_rqe drqe;
hrqe.address_lo = putPaddrLow(hbq_buf->hbuf.phys);
hrqe.address_hi = putPaddrHigh(hbq_buf->hbuf.phys);
drqe.address_lo = putPaddrLow(hbq_buf->dbuf.phys);
drqe.address_hi = putPaddrHigh(hbq_buf->dbuf.phys);
rc = lpfc_sli4_rq_put(phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
&hrqe, &drqe);
if (rc < 0)
return rc;
hbq_buf->tag = rc;
list_add_tail(&hbq_buf->dbuf.list, &phba->hbqs[hbqno].hbq_buffer_list);
return 0;
}
/* HBQ for ELS and CT traffic. */
static struct lpfc_hbq_init lpfc_els_hbq = {
.rn = 1,
.entry_count = 200,
.mask_count = 0,
.profile = 0,
.ring_mask = (1 << LPFC_ELS_RING),
.buffer_count = 0,
.init_count = 40,
.add_count = 40,
};
/* HBQ for the extra ring if needed */
static struct lpfc_hbq_init lpfc_extra_hbq = {
.rn = 1,
.entry_count = 200,
.mask_count = 0,
.profile = 0,
.ring_mask = (1 << LPFC_EXTRA_RING),
.buffer_count = 0,
.init_count = 0,
.add_count = 5,
};
/* Array of HBQs */
struct lpfc_hbq_init *lpfc_hbq_defs[] = {
&lpfc_els_hbq,
&lpfc_extra_hbq,
};
/**
* lpfc_sli_hbqbuf_fill_hbqs - Post more hbq buffers to HBQ
* @phba: Pointer to HBA context object.
* @hbqno: HBQ number.
* @count: Number of HBQ buffers to be posted.
*
* This function is called with no lock held to post more hbq buffers to the
* given HBQ. The function returns the number of HBQ buffers successfully
* posted.
**/
static int
lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
{
uint32_t i, posted = 0;
unsigned long flags;
struct hbq_dmabuf *hbq_buffer;
LIST_HEAD(hbq_buf_list);
if (!phba->hbqs[hbqno].hbq_alloc_buffer)
return 0;
if ((phba->hbqs[hbqno].buffer_count + count) >
lpfc_hbq_defs[hbqno]->entry_count)
count = lpfc_hbq_defs[hbqno]->entry_count -
phba->hbqs[hbqno].buffer_count;
if (!count)
return 0;
/* Allocate HBQ entries */
for (i = 0; i < count; i++) {
hbq_buffer = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba);
if (!hbq_buffer)
break;
list_add_tail(&hbq_buffer->dbuf.list, &hbq_buf_list);
}
/* Check whether HBQ is still in use */
spin_lock_irqsave(&phba->hbalock, flags);
if (!phba->hbq_in_use)
goto err;
while (!list_empty(&hbq_buf_list)) {
list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf,
dbuf.list);
hbq_buffer->tag = (phba->hbqs[hbqno].buffer_count |
(hbqno << 16));
if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) {
phba->hbqs[hbqno].buffer_count++;
posted++;
} else
(phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
}
spin_unlock_irqrestore(&phba->hbalock, flags);
return posted;
err:
spin_unlock_irqrestore(&phba->hbalock, flags);
while (!list_empty(&hbq_buf_list)) {
list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf,
dbuf.list);
(phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
}
return 0;
}
/**
* lpfc_sli_hbqbuf_add_hbqs - Post more HBQ buffers to firmware
* @phba: Pointer to HBA context object.
* @qno: HBQ number.
*
* This function posts more buffers to the HBQ. This function
* is called with no lock held. The function returns the number of HBQ entries
* successfully allocated.
**/
int
lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *phba, uint32_t qno)
{
return(lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
lpfc_hbq_defs[qno]->add_count));
}
/**
* lpfc_sli_hbqbuf_init_hbqs - Post initial buffers to the HBQ
* @phba: Pointer to HBA context object.
* @qno: HBQ queue number.
*
* This function is called from SLI initialization code path with
* no lock held to post initial HBQ buffers to firmware. The
* function returns the number of HBQ entries successfully allocated.
**/
static int
lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno)
{
return(lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
lpfc_hbq_defs[qno]->init_count));
}
/**
* lpfc_sli_hbqbuf_get - Remove the first hbq off of an hbq list
* @phba: Pointer to HBA context object.
* @hbqno: HBQ number.
*
* This function removes the first hbq buffer on an hbq list and returns a
* pointer to that buffer. If it finds no buffers on the list it returns NULL.
**/
static struct hbq_dmabuf *
lpfc_sli_hbqbuf_get(struct list_head *rb_list)
{
struct lpfc_dmabuf *d_buf;
list_remove_head(rb_list, d_buf, struct lpfc_dmabuf, list);
if (!d_buf)
return NULL;
return container_of(d_buf, struct hbq_dmabuf, dbuf);
}
/**
* lpfc_sli_hbqbuf_find - Find the hbq buffer associated with a tag
* @phba: Pointer to HBA context object.
* @tag: Tag of the hbq buffer.
*
* This function is called with hbalock held. This function searches
* for the hbq buffer associated with the given tag in the hbq buffer
* list. If it finds the hbq buffer, it returns the hbq_buffer other wise
* it returns NULL.
**/
static struct hbq_dmabuf *
lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
{
struct lpfc_dmabuf *d_buf;
struct hbq_dmabuf *hbq_buf;
uint32_t hbqno;
hbqno = tag >> 16;
if (hbqno >= LPFC_MAX_HBQS)
return NULL;
spin_lock_irq(&phba->hbalock);
list_for_each_entry(d_buf, &phba->hbqs[hbqno].hbq_buffer_list, list) {
hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
if (hbq_buf->tag == tag) {
spin_unlock_irq(&phba->hbalock);
return hbq_buf;
}
}
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT,
"1803 Bad hbq tag. Data: x%x x%x\n",
tag, phba->hbqs[tag >> 16].buffer_count);
return NULL;
}
/**
* lpfc_sli_free_hbq - Give back the hbq buffer to firmware
* @phba: Pointer to HBA context object.
* @hbq_buffer: Pointer to HBQ buffer.
*
* This function is called with hbalock. This function gives back
* the hbq buffer to firmware. If the HBQ does not have space to
* post the buffer, it will free the buffer.
**/
void
lpfc_sli_free_hbq(struct lpfc_hba *phba, struct hbq_dmabuf *hbq_buffer)
{
uint32_t hbqno;
if (hbq_buffer) {
hbqno = hbq_buffer->tag >> 16;
if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer))
(phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
}
}
/**
* lpfc_sli_chk_mbx_command - Check if the mailbox is a legitimate mailbox
* @mbxCommand: mailbox command code.
*
* This function is called by the mailbox event handler function to verify
* that the completed mailbox command is a legitimate mailbox command. If the
* completed mailbox is not known to the function, it will return MBX_SHUTDOWN
* and the mailbox event handler will take the HBA offline.
**/
static int
lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
{
uint8_t ret;
switch (mbxCommand) {
case MBX_LOAD_SM:
case MBX_READ_NV:
case MBX_WRITE_NV:
case MBX_WRITE_VPARMS:
case MBX_RUN_BIU_DIAG:
case MBX_INIT_LINK:
case MBX_DOWN_LINK:
case MBX_CONFIG_LINK:
case MBX_CONFIG_RING:
case MBX_RESET_RING:
case MBX_READ_CONFIG:
case MBX_READ_RCONFIG:
case MBX_READ_SPARM:
case MBX_READ_STATUS:
case MBX_READ_RPI:
case MBX_READ_XRI:
case MBX_READ_REV:
case MBX_READ_LNK_STAT:
case MBX_REG_LOGIN:
case MBX_UNREG_LOGIN:
case MBX_READ_LA:
case MBX_CLEAR_LA:
case MBX_DUMP_MEMORY:
case MBX_DUMP_CONTEXT:
case MBX_RUN_DIAGS:
case MBX_RESTART:
case MBX_UPDATE_CFG:
case MBX_DOWN_LOAD:
case MBX_DEL_LD_ENTRY:
case MBX_RUN_PROGRAM:
case MBX_SET_MASK:
case MBX_SET_VARIABLE:
case MBX_UNREG_D_ID:
case MBX_KILL_BOARD:
case MBX_CONFIG_FARP:
case MBX_BEACON:
case MBX_LOAD_AREA:
case MBX_RUN_BIU_DIAG64:
case MBX_CONFIG_PORT:
case MBX_READ_SPARM64:
case MBX_READ_RPI64:
case MBX_REG_LOGIN64:
case MBX_READ_LA64:
case MBX_WRITE_WWN:
case MBX_SET_DEBUG:
case MBX_LOAD_EXP_ROM:
case MBX_ASYNCEVT_ENABLE:
case MBX_REG_VPI:
case MBX_UNREG_VPI:
case MBX_HEARTBEAT:
case MBX_PORT_CAPABILITIES:
case MBX_PORT_IOV_CONTROL:
case MBX_SLI4_CONFIG:
case MBX_SLI4_REQ_FTRS:
case MBX_REG_FCFI:
case MBX_UNREG_FCFI:
case MBX_REG_VFI:
case MBX_UNREG_VFI:
case MBX_INIT_VPI:
case MBX_INIT_VFI:
case MBX_RESUME_RPI:
ret = mbxCommand;
break;
default:
ret = MBX_SHUTDOWN;
break;
}
return ret;
}
/**
* lpfc_sli_wake_mbox_wait - lpfc_sli_issue_mbox_wait mbox completion handler
* @phba: Pointer to HBA context object.
* @pmboxq: Pointer to mailbox command.
*
* This is completion handler function for mailbox commands issued from
* lpfc_sli_issue_mbox_wait function. This function is called by the
* mailbox event handler function with no lock held. This function
* will wake up thread waiting on the wait queue pointed by context1
* of the mailbox.
**/
void
lpfc_sli_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
{
wait_queue_head_t *pdone_q;
unsigned long drvr_flag;
/*
* If pdone_q is empty, the driver thread gave up waiting and
* continued running.
*/
pmboxq->mbox_flag |= LPFC_MBX_WAKE;
spin_lock_irqsave(&phba->hbalock, drvr_flag);
pdone_q = (wait_queue_head_t *) pmboxq->context1;
if (pdone_q)
wake_up_interruptible(pdone_q);
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
return;
}
/**
* lpfc_sli_def_mbox_cmpl - Default mailbox completion handler
* @phba: Pointer to HBA context object.
* @pmb: Pointer to mailbox object.
*
* This function is the default mailbox completion handler. It
* frees the memory resources associated with the completed mailbox
* command. If the completed command is a REG_LOGIN mailbox command,
* this function will issue a UREG_LOGIN to re-claim the RPI.
**/
void
lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
{
struct lpfc_dmabuf *mp;
uint16_t rpi, vpi;
int rc;
mp = (struct lpfc_dmabuf *) (pmb->context1);
if (mp) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
}
if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) &&
(phba->sli_rev == LPFC_SLI_REV4))
lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi);
/*
* If a REG_LOGIN succeeded after node is destroyed or node
* is in re-discovery driver need to cleanup the RPI.
*/
if (!(phba->pport->load_flag & FC_UNLOADING) &&
pmb->u.mb.mbxCommand == MBX_REG_LOGIN64 &&
!pmb->u.mb.mbxStatus) {
rpi = pmb->u.mb.un.varWords[0];
vpi = pmb->u.mb.un.varRegLogin.vpi - phba->vpi_base;
lpfc_unreg_login(phba, vpi, rpi, pmb);
pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
if (rc != MBX_NOT_FINISHED)
return;
}
if (bf_get(lpfc_mqe_command, &pmb->u.mqe) == MBX_SLI4_CONFIG)
lpfc_sli4_mbox_cmd_free(phba, pmb);
else
mempool_free(pmb, phba->mbox_mem_pool);
}
/**
* lpfc_sli_handle_mb_event - Handle mailbox completions from firmware
* @phba: Pointer to HBA context object.
*
* This function is called with no lock held. This function processes all
* the completed mailbox commands and gives it to upper layers. The interrupt
* service routine processes mailbox completion interrupt and adds completed
* mailbox commands to the mboxq_cmpl queue and signals the worker thread.
* Worker thread call lpfc_sli_handle_mb_event, which will return the
* completed mailbox commands in mboxq_cmpl queue to the upper layers. This
* function returns the mailbox commands to the upper layer by calling the
* completion handler function of each mailbox.
**/
int
lpfc_sli_handle_mb_event(struct lpfc_hba *phba)
{
MAILBOX_t *pmbox;
LPFC_MBOXQ_t *pmb;
int rc;
LIST_HEAD(cmplq);
phba->sli.slistat.mbox_event++;
/* Get all completed mailboxe buffers into the cmplq */
spin_lock_irq(&phba->hbalock);
list_splice_init(&phba->sli.mboxq_cmpl, &cmplq);
spin_unlock_irq(&phba->hbalock);
/* Get a Mailbox buffer to setup mailbox commands for callback */
do {
list_remove_head(&cmplq, pmb, LPFC_MBOXQ_t, list);
if (pmb == NULL)
break;
pmbox = &pmb->u.mb;
if (pmbox->mbxCommand != MBX_HEARTBEAT) {
if (pmb->vport) {
lpfc_debugfs_disc_trc(pmb->vport,
LPFC_DISC_TRC_MBOX_VPORT,
"MBOX cmpl vport: cmd:x%x mb:x%x x%x",
(uint32_t)pmbox->mbxCommand,
pmbox->un.varWords[0],
pmbox->un.varWords[1]);
}
else {
lpfc_debugfs_disc_trc(phba->pport,
LPFC_DISC_TRC_MBOX,
"MBOX cmpl: cmd:x%x mb:x%x x%x",
(uint32_t)pmbox->mbxCommand,
pmbox->un.varWords[0],
pmbox->un.varWords[1]);
}
}
/*
* It is a fatal error if unknown mbox command completion.
*/
if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
MBX_SHUTDOWN) {
/* Unknow mailbox command compl */
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"(%d):0323 Unknown Mailbox command "
"x%x (x%x) Cmpl\n",
pmb->vport ? pmb->vport->vpi : 0,
pmbox->mbxCommand,
lpfc_sli4_mbox_opcode_get(phba, pmb));
phba->link_state = LPFC_HBA_ERROR;
phba->work_hs = HS_FFER3;
lpfc_handle_eratt(phba);
continue;
}
if (pmbox->mbxStatus) {
phba->sli.slistat.mbox_stat_err++;
if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
/* Mbox cmd cmpl error - RETRYing */
lpfc_printf_log(phba, KERN_INFO,
LOG_MBOX | LOG_SLI,
"(%d):0305 Mbox cmd cmpl "
"error - RETRYing Data: x%x "
"(x%x) x%x x%x x%x\n",
pmb->vport ? pmb->vport->vpi :0,
pmbox->mbxCommand,
lpfc_sli4_mbox_opcode_get(phba,
pmb),
pmbox->mbxStatus,
pmbox->un.varWords[0],
pmb->vport->port_state);
pmbox->mbxStatus = 0;
pmbox->mbxOwner = OWN_HOST;
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
if (rc != MBX_NOT_FINISHED)
continue;
}
}
/* Mailbox cmd <cmd> Cmpl <cmpl> */
lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
"(%d):0307 Mailbox cmd x%x (x%x) Cmpl x%p "
"Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
pmb->vport ? pmb->vport->vpi : 0,
pmbox->mbxCommand,
lpfc_sli4_mbox_opcode_get(phba, pmb),
pmb->mbox_cmpl,
*((uint32_t *) pmbox),
pmbox->un.varWords[0],
pmbox->un.varWords[1],
pmbox->un.varWords[2],
pmbox->un.varWords[3],
pmbox->un.varWords[4],
pmbox->un.varWords[5],
pmbox->un.varWords[6],
pmbox->un.varWords[7]);
if (pmb->mbox_cmpl)
pmb->mbox_cmpl(phba,pmb);
} while (1);
return 0;
}
/**
* lpfc_sli_get_buff - Get the buffer associated with the buffer tag
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @tag: buffer tag.
*
* This function is called with no lock held. When QUE_BUFTAG_BIT bit
* is set in the tag the buffer is posted for a particular exchange,
* the function will return the buffer without replacing the buffer.
* If the buffer is for unsolicited ELS or CT traffic, this function
* returns the buffer and also posts another buffer to the firmware.
**/
static struct lpfc_dmabuf *
lpfc_sli_get_buff(struct lpfc_hba *phba,
struct lpfc_sli_ring *pring,
uint32_t tag)
{
struct hbq_dmabuf *hbq_entry;
if (tag & QUE_BUFTAG_BIT)
return lpfc_sli_ring_taggedbuf_get(phba, pring, tag);
hbq_entry = lpfc_sli_hbqbuf_find(phba, tag);
if (!hbq_entry)
return NULL;
return &hbq_entry->dbuf;
}
/**
* lpfc_complete_unsol_iocb - Complete an unsolicited sequence
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @saveq: Pointer to the iocbq struct representing the sequence starting frame.
* @fch_r_ctl: the r_ctl for the first frame of the sequence.
* @fch_type: the type for the first frame of the sequence.
*
* This function is called with no lock held. This function uses the r_ctl and
* type of the received sequence to find the correct callback function to call
* to process the sequence.
**/
static int
lpfc_complete_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *saveq, uint32_t fch_r_ctl,
uint32_t fch_type)
{
int i;
/* unSolicited Responses */
if (pring->prt[0].profile) {
if (pring->prt[0].lpfc_sli_rcv_unsol_event)
(pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
saveq);
return 1;
}
/* We must search, based on rctl / type
for the right routine */
for (i = 0; i < pring->num_mask; i++) {
if ((pring->prt[i].rctl == fch_r_ctl) &&
(pring->prt[i].type == fch_type)) {
if (pring->prt[i].lpfc_sli_rcv_unsol_event)
(pring->prt[i].lpfc_sli_rcv_unsol_event)
(phba, pring, saveq);
return 1;
}
}
return 0;
}
/**
* lpfc_sli_process_unsol_iocb - Unsolicited iocb handler
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @saveq: Pointer to the unsolicited iocb.
*
* This function is called with no lock held by the ring event handler
* when there is an unsolicited iocb posted to the response ring by the
* firmware. This function gets the buffer associated with the iocbs
* and calls the event handler for the ring. This function handles both
* qring buffers and hbq buffers.
* When the function returns 1 the caller can free the iocb object otherwise
* upper layer functions will free the iocb objects.
**/
static int
lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *saveq)
{
IOCB_t * irsp;
WORD5 * w5p;
uint32_t Rctl, Type;
uint32_t match;
struct lpfc_iocbq *iocbq;
struct lpfc_dmabuf *dmzbuf;
match = 0;
irsp = &(saveq->iocb);
if (irsp->ulpCommand == CMD_ASYNC_STATUS) {
if (pring->lpfc_sli_rcv_async_status)
pring->lpfc_sli_rcv_async_status(phba, pring, saveq);
else
lpfc_printf_log(phba,
KERN_WARNING,
LOG_SLI,
"0316 Ring %d handler: unexpected "
"ASYNC_STATUS iocb received evt_code "
"0x%x\n",
pring->ringno,
irsp->un.asyncstat.evt_code);
return 1;
}
if ((irsp->ulpCommand == CMD_IOCB_RET_XRI64_CX) &&
(phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) {
if (irsp->ulpBdeCount > 0) {
dmzbuf = lpfc_sli_get_buff(phba, pring,
irsp->un.ulpWord[3]);
lpfc_in_buf_free(phba, dmzbuf);
}
if (irsp->ulpBdeCount > 1) {
dmzbuf = lpfc_sli_get_buff(phba, pring,
irsp->unsli3.sli3Words[3]);
lpfc_in_buf_free(phba, dmzbuf);
}
if (irsp->ulpBdeCount > 2) {
dmzbuf = lpfc_sli_get_buff(phba, pring,
irsp->unsli3.sli3Words[7]);
lpfc_in_buf_free(phba, dmzbuf);
}
return 1;
}
if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
if (irsp->ulpBdeCount != 0) {
saveq->context2 = lpfc_sli_get_buff(phba, pring,
irsp->un.ulpWord[3]);
if (!saveq->context2)
lpfc_printf_log(phba,
KERN_ERR,
LOG_SLI,
"0341 Ring %d Cannot find buffer for "
"an unsolicited iocb. tag 0x%x\n",
pring->ringno,
irsp->un.ulpWord[3]);
}
if (irsp->ulpBdeCount == 2) {
saveq->context3 = lpfc_sli_get_buff(phba, pring,
irsp->unsli3.sli3Words[7]);
if (!saveq->context3)
lpfc_printf_log(phba,
KERN_ERR,
LOG_SLI,
"0342 Ring %d Cannot find buffer for an"
" unsolicited iocb. tag 0x%x\n",
pring->ringno,
irsp->unsli3.sli3Words[7]);
}
list_for_each_entry(iocbq, &saveq->list, list) {
irsp = &(iocbq->iocb);
if (irsp->ulpBdeCount != 0) {
iocbq->context2 = lpfc_sli_get_buff(phba, pring,
irsp->un.ulpWord[3]);
if (!iocbq->context2)
lpfc_printf_log(phba,
KERN_ERR,
LOG_SLI,
"0343 Ring %d Cannot find "
"buffer for an unsolicited iocb"
". tag 0x%x\n", pring->ringno,
irsp->un.ulpWord[3]);
}
if (irsp->ulpBdeCount == 2) {
iocbq->context3 = lpfc_sli_get_buff(phba, pring,
irsp->unsli3.sli3Words[7]);
if (!iocbq->context3)
lpfc_printf_log(phba,
KERN_ERR,
LOG_SLI,
"0344 Ring %d Cannot find "
"buffer for an unsolicited "
"iocb. tag 0x%x\n",
pring->ringno,
irsp->unsli3.sli3Words[7]);
}
}
}
if (irsp->ulpBdeCount != 0 &&
(irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX ||
irsp->ulpStatus == IOSTAT_INTERMED_RSP)) {
int found = 0;
/* search continue save q for same XRI */
list_for_each_entry(iocbq, &pring->iocb_continue_saveq, clist) {
if (iocbq->iocb.ulpContext == saveq->iocb.ulpContext) {
list_add_tail(&saveq->list, &iocbq->list);
found = 1;
break;
}
}
if (!found)
list_add_tail(&saveq->clist,
&pring->iocb_continue_saveq);
if (saveq->iocb.ulpStatus != IOSTAT_INTERMED_RSP) {
list_del_init(&iocbq->clist);
saveq = iocbq;
irsp = &(saveq->iocb);
} else
return 0;
}
if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX) ||
(irsp->ulpCommand == CMD_RCV_ELS_REQ_CX) ||
(irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)) {
Rctl = FC_ELS_REQ;
Type = FC_ELS_DATA;
} else {
w5p = (WORD5 *)&(saveq->iocb.un.ulpWord[5]);
Rctl = w5p->hcsw.Rctl;
Type = w5p->hcsw.Type;
/* Firmware Workaround */
if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
(irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX ||
irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
Rctl = FC_ELS_REQ;
Type = FC_ELS_DATA;
w5p->hcsw.Rctl = Rctl;
w5p->hcsw.Type = Type;
}
}
if (!lpfc_complete_unsol_iocb(phba, pring, saveq, Rctl, Type))
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"0313 Ring %d handler: unexpected Rctl x%x "
"Type x%x received\n",
pring->ringno, Rctl, Type);
return 1;
}
/**
* lpfc_sli_iocbq_lookup - Find command iocb for the given response iocb
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @prspiocb: Pointer to response iocb object.
*
* This function looks up the iocb_lookup table to get the command iocb
* corresponding to the given response iocb using the iotag of the
* response iocb. This function is called with the hbalock held.
* This function returns the command iocb object if it finds the command
* iocb else returns NULL.
**/
static struct lpfc_iocbq *
lpfc_sli_iocbq_lookup(struct lpfc_hba *phba,
struct lpfc_sli_ring *pring,
struct lpfc_iocbq *prspiocb)
{
struct lpfc_iocbq *cmd_iocb = NULL;
uint16_t iotag;
iotag = prspiocb->iocb.ulpIoTag;
if (iotag != 0 && iotag <= phba->sli.last_iotag) {
cmd_iocb = phba->sli.iocbq_lookup[iotag];
list_del_init(&cmd_iocb->list);
pring->txcmplq_cnt--;
return cmd_iocb;
}
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0317 iotag x%x is out off "
"range: max iotag x%x wd0 x%x\n",
iotag, phba->sli.last_iotag,
*(((uint32_t *) &prspiocb->iocb) + 7));
return NULL;
}
/**
* lpfc_sli_iocbq_lookup_by_tag - Find command iocb for the iotag
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @iotag: IOCB tag.
*
* This function looks up the iocb_lookup table to get the command iocb
* corresponding to the given iotag. This function is called with the
* hbalock held.
* This function returns the command iocb object if it finds the command
* iocb else returns NULL.
**/
static struct lpfc_iocbq *
lpfc_sli_iocbq_lookup_by_tag(struct lpfc_hba *phba,
struct lpfc_sli_ring *pring, uint16_t iotag)
{
struct lpfc_iocbq *cmd_iocb;
if (iotag != 0 && iotag <= phba->sli.last_iotag) {
cmd_iocb = phba->sli.iocbq_lookup[iotag];
list_del_init(&cmd_iocb->list);
pring->txcmplq_cnt--;
return cmd_iocb;
}
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0372 iotag x%x is out off range: max iotag (x%x)\n",
iotag, phba->sli.last_iotag);
return NULL;
}
/**
* lpfc_sli_process_sol_iocb - process solicited iocb completion
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @saveq: Pointer to the response iocb to be processed.
*
* This function is called by the ring event handler for non-fcp
* rings when there is a new response iocb in the response ring.
* The caller is not required to hold any locks. This function
* gets the command iocb associated with the response iocb and
* calls the completion handler for the command iocb. If there
* is no completion handler, the function will free the resources
* associated with command iocb. If the response iocb is for
* an already aborted command iocb, the status of the completion
* is changed to IOSTAT_LOCAL_REJECT/IOERR_SLI_ABORTED.
* This function always returns 1.
**/
static int
lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *saveq)
{
struct lpfc_iocbq *cmdiocbp;
int rc = 1;
unsigned long iflag;
/* Based on the iotag field, get the cmd IOCB from the txcmplq */
spin_lock_irqsave(&phba->hbalock, iflag);
cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
spin_unlock_irqrestore(&phba->hbalock, iflag);
if (cmdiocbp) {
if (cmdiocbp->iocb_cmpl) {
/*
* If an ELS command failed send an event to mgmt
* application.
*/
if (saveq->iocb.ulpStatus &&
(pring->ringno == LPFC_ELS_RING) &&
(cmdiocbp->iocb.ulpCommand ==
CMD_ELS_REQUEST64_CR))
lpfc_send_els_failure_event(phba,
cmdiocbp, saveq);
/*
* Post all ELS completions to the worker thread.
* All other are passed to the completion callback.
*/
if (pring->ringno == LPFC_ELS_RING) {
if (cmdiocbp->iocb_flag & LPFC_DRIVER_ABORTED) {
cmdiocbp->iocb_flag &=
~LPFC_DRIVER_ABORTED;
saveq->iocb.ulpStatus =
IOSTAT_LOCAL_REJECT;
saveq->iocb.un.ulpWord[4] =
IOERR_SLI_ABORTED;
/* Firmware could still be in progress
* of DMAing payload, so don't free data
* buffer till after a hbeat.
*/
saveq->iocb_flag |= LPFC_DELAY_MEM_FREE;
}
}
(cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
} else
lpfc_sli_release_iocbq(phba, cmdiocbp);
} else {
/*
* Unknown initiating command based on the response iotag.
* This could be the case on the ELS ring because of
* lpfc_els_abort().
*/
if (pring->ringno != LPFC_ELS_RING) {
/*
* Ring <ringno> handler: unexpected completion IoTag
* <IoTag>
*/
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"0322 Ring %d handler: "
"unexpected completion IoTag x%x "
"Data: x%x x%x x%x x%x\n",
pring->ringno,
saveq->iocb.ulpIoTag,
saveq->iocb.ulpStatus,
saveq->iocb.un.ulpWord[4],
saveq->iocb.ulpCommand,
saveq->iocb.ulpContext);
}
}
return rc;
}
/**
* lpfc_sli_rsp_pointers_error - Response ring pointer error handler
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
*
* This function is called from the iocb ring event handlers when
* put pointer is ahead of the get pointer for a ring. This function signal
* an error attention condition to the worker thread and the worker
* thread will transition the HBA to offline state.
**/
static void
lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
/*
* Ring <ringno> handler: portRspPut <portRspPut> is bigger than
* rsp ring <portRspMax>
*/
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0312 Ring %d handler: portRspPut %d "
"is bigger than rsp ring %d\n",
pring->ringno, le32_to_cpu(pgp->rspPutInx),
pring->numRiocb);
phba->link_state = LPFC_HBA_ERROR;
/*
* All error attention handlers are posted to
* worker thread
*/
phba->work_ha |= HA_ERATT;
phba->work_hs = HS_FFER3;
lpfc_worker_wake_up(phba);
return;
}
/**
* lpfc_poll_eratt - Error attention polling timer timeout handler
* @ptr: Pointer to address of HBA context object.
*
* This function is invoked by the Error Attention polling timer when the
* timer times out. It will check the SLI Error Attention register for
* possible attention events. If so, it will post an Error Attention event
* and wake up worker thread to process it. Otherwise, it will set up the
* Error Attention polling timer for the next poll.
**/
void lpfc_poll_eratt(unsigned long ptr)
{
struct lpfc_hba *phba;
uint32_t eratt = 0;
phba = (struct lpfc_hba *)ptr;
/* Check chip HA register for error event */
eratt = lpfc_sli_check_eratt(phba);
if (eratt)
/* Tell the worker thread there is work to do */
lpfc_worker_wake_up(phba);
else
/* Restart the timer for next eratt poll */
mod_timer(&phba->eratt_poll, jiffies +
HZ * LPFC_ERATT_POLL_INTERVAL);
return;
}
/**
* lpfc_sli_poll_fcp_ring - Handle FCP ring completion in polling mode
* @phba: Pointer to HBA context object.
*
* This function is called from lpfc_queuecommand, lpfc_poll_timeout,
* lpfc_abort_handler and lpfc_slave_configure when FCP_RING_POLLING
* is enabled.
*
* The caller does not hold any lock.
* The function processes each response iocb in the response ring until it
* finds an iocb with LE bit set and chains all the iocbs upto the iocb with
* LE bit set. The function will call the completion handler of the command iocb
* if the response iocb indicates a completion for a command iocb or it is
* an abort completion.
**/
void lpfc_sli_poll_fcp_ring(struct lpfc_hba *phba)
{
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING];
IOCB_t *irsp = NULL;
IOCB_t *entry = NULL;
struct lpfc_iocbq *cmdiocbq = NULL;
struct lpfc_iocbq rspiocbq;
struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
uint32_t status;
uint32_t portRspPut, portRspMax;
int type;
uint32_t rsp_cmpl = 0;
uint32_t ha_copy;
unsigned long iflags;
pring->stats.iocb_event++;
/*
* The next available response entry should never exceed the maximum
* entries. If it does, treat it as an adapter hardware error.
*/
portRspMax = pring->numRiocb;
portRspPut = le32_to_cpu(pgp->rspPutInx);
if (unlikely(portRspPut >= portRspMax)) {
lpfc_sli_rsp_pointers_error(phba, pring);
return;
}
rmb();
while (pring->rspidx != portRspPut) {
entry = lpfc_resp_iocb(phba, pring);
if (++pring->rspidx >= portRspMax)
pring->rspidx = 0;
lpfc_sli_pcimem_bcopy((uint32_t *) entry,
(uint32_t *) &rspiocbq.iocb,
phba->iocb_rsp_size);
irsp = &rspiocbq.iocb;
type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
pring->stats.iocb_rsp++;
rsp_cmpl++;
if (unlikely(irsp->ulpStatus)) {
/* Rsp ring <ringno> error: IOCB */
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"0326 Rsp Ring %d error: IOCB Data: "
"x%x x%x x%x x%x x%x x%x x%x x%x\n",
pring->ringno,
irsp->un.ulpWord[0],
irsp->un.ulpWord[1],
irsp->un.ulpWord[2],
irsp->un.ulpWord[3],
irsp->un.ulpWord[4],
irsp->un.ulpWord[5],
*(uint32_t *)&irsp->un1,
*((uint32_t *)&irsp->un1 + 1));
}
switch (type) {
case LPFC_ABORT_IOCB:
case LPFC_SOL_IOCB:
/*
* Idle exchange closed via ABTS from port. No iocb
* resources need to be recovered.
*/
if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"0314 IOCB cmd 0x%x "
"processed. Skipping "
"completion",
irsp->ulpCommand);
break;
}
spin_lock_irqsave(&phba->hbalock, iflags);
cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
&rspiocbq);
spin_unlock_irqrestore(&phba->hbalock, iflags);
if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
(cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
&rspiocbq);
}
break;
default:
if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
char adaptermsg[LPFC_MAX_ADPTMSG];
memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
memcpy(&adaptermsg[0], (uint8_t *) irsp,
MAX_MSG_DATA);
dev_warn(&((phba->pcidev)->dev),
"lpfc%d: %s\n",
phba->brd_no, adaptermsg);
} else {
/* Unknown IOCB command */
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0321 Unknown IOCB command "
"Data: x%x, x%x x%x x%x x%x\n",
type, irsp->ulpCommand,
irsp->ulpStatus,
irsp->ulpIoTag,
irsp->ulpContext);
}
break;
}
/*
* The response IOCB has been processed. Update the ring
* pointer in SLIM. If the port response put pointer has not
* been updated, sync the pgp->rspPutInx and fetch the new port
* response put pointer.
*/
writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
if (pring->rspidx == portRspPut)
portRspPut = le32_to_cpu(pgp->rspPutInx);
}
ha_copy = readl(phba->HAregaddr);
ha_copy >>= (LPFC_FCP_RING * 4);
if ((rsp_cmpl > 0) && (ha_copy & HA_R0RE_REQ)) {
spin_lock_irqsave(&phba->hbalock, iflags);
pring->stats.iocb_rsp_full++;
status = ((CA_R0ATT | CA_R0RE_RSP) << (LPFC_FCP_RING * 4));
writel(status, phba->CAregaddr);
readl(phba->CAregaddr);
spin_unlock_irqrestore(&phba->hbalock, iflags);
}
if ((ha_copy & HA_R0CE_RSP) &&
(pring->flag & LPFC_CALL_RING_AVAILABLE)) {
spin_lock_irqsave(&phba->hbalock, iflags);
pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
pring->stats.iocb_cmd_empty++;
/* Force update of the local copy of cmdGetInx */
pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
lpfc_sli_resume_iocb(phba, pring);
if ((pring->lpfc_sli_cmd_available))
(pring->lpfc_sli_cmd_available) (phba, pring);
spin_unlock_irqrestore(&phba->hbalock, iflags);
}
return;
}
/**
* lpfc_sli_handle_fast_ring_event - Handle ring events on FCP ring
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @mask: Host attention register mask for this ring.
*
* This function is called from the interrupt context when there is a ring
* event for the fcp ring. The caller does not hold any lock.
* The function processes each response iocb in the response ring until it
* finds an iocb with LE bit set and chains all the iocbs upto the iocb with
* LE bit set. The function will call the completion handler of the command iocb
* if the response iocb indicates a completion for a command iocb or it is
* an abort completion. The function will call lpfc_sli_process_unsol_iocb
* function if this is an unsolicited iocb.
* This routine presumes LPFC_FCP_RING handling and doesn't bother
* to check it explicitly. This function always returns 1.
**/
static int
lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba,
struct lpfc_sli_ring *pring, uint32_t mask)
{
struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
IOCB_t *irsp = NULL;
IOCB_t *entry = NULL;
struct lpfc_iocbq *cmdiocbq = NULL;
struct lpfc_iocbq rspiocbq;
uint32_t status;
uint32_t portRspPut, portRspMax;
int rc = 1;
lpfc_iocb_type type;
unsigned long iflag;
uint32_t rsp_cmpl = 0;
spin_lock_irqsave(&phba->hbalock, iflag);
pring->stats.iocb_event++;
/*
* The next available response entry should never exceed the maximum
* entries. If it does, treat it as an adapter hardware error.
*/
portRspMax = pring->numRiocb;
portRspPut = le32_to_cpu(pgp->rspPutInx);
if (unlikely(portRspPut >= portRspMax)) {
lpfc_sli_rsp_pointers_error(phba, pring);
spin_unlock_irqrestore(&phba->hbalock, iflag);
return 1;
}
rmb();
while (pring->rspidx != portRspPut) {
/*
* Fetch an entry off the ring and copy it into a local data
* structure. The copy involves a byte-swap since the
* network byte order and pci byte orders are different.
*/
entry = lpfc_resp_iocb(phba, pring);
phba->last_completion_time = jiffies;
if (++pring->rspidx >= portRspMax)
pring->rspidx = 0;
lpfc_sli_pcimem_bcopy((uint32_t *) entry,
(uint32_t *) &rspiocbq.iocb,
phba->iocb_rsp_size);
INIT_LIST_HEAD(&(rspiocbq.list));
irsp = &rspiocbq.iocb;
type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
pring->stats.iocb_rsp++;
rsp_cmpl++;
if (unlikely(irsp->ulpStatus)) {
/*
* If resource errors reported from HBA, reduce
* queuedepths of the SCSI device.
*/
if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
(irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
spin_unlock_irqrestore(&phba->hbalock, iflag);
phba->lpfc_rampdown_queue_depth(phba);
spin_lock_irqsave(&phba->hbalock, iflag);
}
/* Rsp ring <ringno> error: IOCB */
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"0336 Rsp Ring %d error: IOCB Data: "
"x%x x%x x%x x%x x%x x%x x%x x%x\n",
pring->ringno,
irsp->un.ulpWord[0],
irsp->un.ulpWord[1],
irsp->un.ulpWord[2],
irsp->un.ulpWord[3],
irsp->un.ulpWord[4],
irsp->un.ulpWord[5],
*(uint32_t *)&irsp->un1,
*((uint32_t *)&irsp->un1 + 1));
}
switch (type) {
case LPFC_ABORT_IOCB:
case LPFC_SOL_IOCB:
/*
* Idle exchange closed via ABTS from port. No iocb
* resources need to be recovered.
*/
if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"0333 IOCB cmd 0x%x"
" processed. Skipping"
" completion\n",
irsp->ulpCommand);
break;
}
cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
&rspiocbq);
if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
(cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
&rspiocbq);
} else {
spin_unlock_irqrestore(&phba->hbalock,
iflag);
(cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
&rspiocbq);
spin_lock_irqsave(&phba->hbalock,
iflag);
}
}
break;
case LPFC_UNSOL_IOCB:
spin_unlock_irqrestore(&phba->hbalock, iflag);
lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq);
spin_lock_irqsave(&phba->hbalock, iflag);
break;
default:
if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
char adaptermsg[LPFC_MAX_ADPTMSG];
memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
memcpy(&adaptermsg[0], (uint8_t *) irsp,
MAX_MSG_DATA);
dev_warn(&((phba->pcidev)->dev),
"lpfc%d: %s\n",
phba->brd_no, adaptermsg);
} else {
/* Unknown IOCB command */
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0334 Unknown IOCB command "
"Data: x%x, x%x x%x x%x x%x\n",
type, irsp->ulpCommand,
irsp->ulpStatus,
irsp->ulpIoTag,
irsp->ulpContext);
}
break;
}
/*
* The response IOCB has been processed. Update the ring
* pointer in SLIM. If the port response put pointer has not
* been updated, sync the pgp->rspPutInx and fetch the new port
* response put pointer.
*/
writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
if (pring->rspidx == portRspPut)
portRspPut = le32_to_cpu(pgp->rspPutInx);
}
if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
pring->stats.iocb_rsp_full++;
status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
writel(status, phba->CAregaddr);
readl(phba->CAregaddr);
}
if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
pring->stats.iocb_cmd_empty++;
/* Force update of the local copy of cmdGetInx */
pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
lpfc_sli_resume_iocb(phba, pring);
if ((pring->lpfc_sli_cmd_available))
(pring->lpfc_sli_cmd_available) (phba, pring);
}
spin_unlock_irqrestore(&phba->hbalock, iflag);
return rc;
}
/**
* lpfc_sli_sp_handle_rspiocb - Handle slow-path response iocb
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @rspiocbp: Pointer to driver response IOCB object.
*
* This function is called from the worker thread when there is a slow-path
* response IOCB to process. This function chains all the response iocbs until
* seeing the iocb with the LE bit set. The function will call
* lpfc_sli_process_sol_iocb function if the response iocb indicates a
* completion of a command iocb. The function will call the
* lpfc_sli_process_unsol_iocb function if this is an unsolicited iocb.
* The function frees the resources or calls the completion handler if this
* iocb is an abort completion. The function returns NULL when the response
* iocb has the LE bit set and all the chained iocbs are processed, otherwise
* this function shall chain the iocb on to the iocb_continueq and return the
* response iocb passed in.
**/
static struct lpfc_iocbq *
lpfc_sli_sp_handle_rspiocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *rspiocbp)
{
struct lpfc_iocbq *saveq;
struct lpfc_iocbq *cmdiocbp;
struct lpfc_iocbq *next_iocb;
IOCB_t *irsp = NULL;
uint32_t free_saveq;
uint8_t iocb_cmd_type;
lpfc_iocb_type type;
unsigned long iflag;
int rc;
spin_lock_irqsave(&phba->hbalock, iflag);
/* First add the response iocb to the countinueq list */
list_add_tail(&rspiocbp->list, &(pring->iocb_continueq));
pring->iocb_continueq_cnt++;
/* Now, determine whetehr the list is completed for processing */
irsp = &rspiocbp->iocb;
if (irsp->ulpLe) {
/*
* By default, the driver expects to free all resources
* associated with this iocb completion.
*/
free_saveq = 1;
saveq = list_get_first(&pring->iocb_continueq,
struct lpfc_iocbq, list);
irsp = &(saveq->iocb);
list_del_init(&pring->iocb_continueq);
pring->iocb_continueq_cnt = 0;
pring->stats.iocb_rsp++;
/*
* If resource errors reported from HBA, reduce
* queuedepths of the SCSI device.
*/
if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
(irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
spin_unlock_irqrestore(&phba->hbalock, iflag);
phba->lpfc_rampdown_queue_depth(phba);
spin_lock_irqsave(&phba->hbalock, iflag);
}
if (irsp->ulpStatus) {
/* Rsp ring <ringno> error: IOCB */
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"0328 Rsp Ring %d error: "
"IOCB Data: "
"x%x x%x x%x x%x "
"x%x x%x x%x x%x "
"x%x x%x x%x x%x "
"x%x x%x x%x x%x\n",
pring->ringno,
irsp->un.ulpWord[0],
irsp->un.ulpWord[1],
irsp->un.ulpWord[2],
irsp->un.ulpWord[3],
irsp->un.ulpWord[4],
irsp->un.ulpWord[5],
*(((uint32_t *) irsp) + 6),
*(((uint32_t *) irsp) + 7),
*(((uint32_t *) irsp) + 8),
*(((uint32_t *) irsp) + 9),
*(((uint32_t *) irsp) + 10),
*(((uint32_t *) irsp) + 11),
*(((uint32_t *) irsp) + 12),
*(((uint32_t *) irsp) + 13),
*(((uint32_t *) irsp) + 14),
*(((uint32_t *) irsp) + 15));
}
/*
* Fetch the IOCB command type and call the correct completion
* routine. Solicited and Unsolicited IOCBs on the ELS ring
* get freed back to the lpfc_iocb_list by the discovery
* kernel thread.
*/
iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
switch (type) {
case LPFC_SOL_IOCB:
spin_unlock_irqrestore(&phba->hbalock, iflag);
rc = lpfc_sli_process_sol_iocb(phba, pring, saveq);
spin_lock_irqsave(&phba->hbalock, iflag);
break;
case LPFC_UNSOL_IOCB:
spin_unlock_irqrestore(&phba->hbalock, iflag);
rc = lpfc_sli_process_unsol_iocb(phba, pring, saveq);
spin_lock_irqsave(&phba->hbalock, iflag);
if (!rc)
free_saveq = 0;
break;
case LPFC_ABORT_IOCB:
cmdiocbp = NULL;
if (irsp->ulpCommand != CMD_XRI_ABORTED_CX)
cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring,
saveq);
if (cmdiocbp) {
/* Call the specified completion routine */
if (cmdiocbp->iocb_cmpl) {
spin_unlock_irqrestore(&phba->hbalock,
iflag);
(cmdiocbp->iocb_cmpl)(phba, cmdiocbp,
saveq);
spin_lock_irqsave(&phba->hbalock,
iflag);
} else
__lpfc_sli_release_iocbq(phba,
cmdiocbp);
}
break;
case LPFC_UNKNOWN_IOCB:
if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
char adaptermsg[LPFC_MAX_ADPTMSG];
memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
memcpy(&adaptermsg[0], (uint8_t *)irsp,
MAX_MSG_DATA);
dev_warn(&((phba->pcidev)->dev),
"lpfc%d: %s\n",
phba->brd_no, adaptermsg);
} else {
/* Unknown IOCB command */
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0335 Unknown IOCB "
"command Data: x%x "
"x%x x%x x%x\n",
irsp->ulpCommand,
irsp->ulpStatus,
irsp->ulpIoTag,
irsp->ulpContext);
}
break;
}
if (free_saveq) {
list_for_each_entry_safe(rspiocbp, next_iocb,
&saveq->list, list) {
list_del(&rspiocbp->list);
__lpfc_sli_release_iocbq(phba, rspiocbp);
}
__lpfc_sli_release_iocbq(phba, saveq);
}
rspiocbp = NULL;
}
spin_unlock_irqrestore(&phba->hbalock, iflag);
return rspiocbp;
}
/**
* lpfc_sli_handle_slow_ring_event - Wrapper func for handling slow-path iocbs
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @mask: Host attention register mask for this ring.
*
* This routine wraps the actual slow_ring event process routine from the
* API jump table function pointer from the lpfc_hba struct.
**/
void
lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
struct lpfc_sli_ring *pring, uint32_t mask)
{
phba->lpfc_sli_handle_slow_ring_event(phba, pring, mask);
}
/**
* lpfc_sli_handle_slow_ring_event_s3 - Handle SLI3 ring event for non-FCP rings
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @mask: Host attention register mask for this ring.
*
* This function is called from the worker thread when there is a ring event
* for non-fcp rings. The caller does not hold any lock. The function will
* remove each response iocb in the response ring and calls the handle
* response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it.
**/
static void
lpfc_sli_handle_slow_ring_event_s3(struct lpfc_hba *phba,
struct lpfc_sli_ring *pring, uint32_t mask)
{
struct lpfc_pgp *pgp;
IOCB_t *entry;
IOCB_t *irsp = NULL;
struct lpfc_iocbq *rspiocbp = NULL;
uint32_t portRspPut, portRspMax;
unsigned long iflag;
uint32_t status;
pgp = &phba->port_gp[pring->ringno];
spin_lock_irqsave(&phba->hbalock, iflag);
pring->stats.iocb_event++;
/*
* The next available response entry should never exceed the maximum
* entries. If it does, treat it as an adapter hardware error.
*/
portRspMax = pring->numRiocb;
portRspPut = le32_to_cpu(pgp->rspPutInx);
if (portRspPut >= portRspMax) {
/*
* Ring <ringno> handler: portRspPut <portRspPut> is bigger than
* rsp ring <portRspMax>
*/
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0303 Ring %d handler: portRspPut %d "
"is bigger than rsp ring %d\n",
pring->ringno, portRspPut, portRspMax);
phba->link_state = LPFC_HBA_ERROR;
spin_unlock_irqrestore(&phba->hbalock, iflag);
phba->work_hs = HS_FFER3;
lpfc_handle_eratt(phba);
return;
}
rmb();
while (pring->rspidx != portRspPut) {
/*
* Build a completion list and call the appropriate handler.
* The process is to get the next available response iocb, get
* a free iocb from the list, copy the response data into the
* free iocb, insert to the continuation list, and update the
* next response index to slim. This process makes response
* iocb's in the ring available to DMA as fast as possible but
* pays a penalty for a copy operation. Since the iocb is
* only 32 bytes, this penalty is considered small relative to
* the PCI reads for register values and a slim write. When
* the ulpLe field is set, the entire Command has been
* received.
*/
entry = lpfc_resp_iocb(phba, pring);
phba->last_completion_time = jiffies;
rspiocbp = __lpfc_sli_get_iocbq(phba);
if (rspiocbp == NULL) {
printk(KERN_ERR "%s: out of buffers! Failing "
"completion.\n", __func__);
break;
}
lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb,
phba->iocb_rsp_size);
irsp = &rspiocbp->iocb;
if (++pring->rspidx >= portRspMax)
pring->rspidx = 0;
if (pring->ringno == LPFC_ELS_RING) {
lpfc_debugfs_slow_ring_trc(phba,
"IOCB rsp ring: wd4:x%08x wd6:x%08x wd7:x%08x",
*(((uint32_t *) irsp) + 4),
*(((uint32_t *) irsp) + 6),
*(((uint32_t *) irsp) + 7));
}
writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
spin_unlock_irqrestore(&phba->hbalock, iflag);
/* Handle the response IOCB */
rspiocbp = lpfc_sli_sp_handle_rspiocb(phba, pring, rspiocbp);
spin_lock_irqsave(&phba->hbalock, iflag);
/*
* If the port response put pointer has not been updated, sync
* the pgp->rspPutInx in the MAILBOX_tand fetch the new port
* response put pointer.
*/
if (pring->rspidx == portRspPut) {
portRspPut = le32_to_cpu(pgp->rspPutInx);
}
} /* while (pring->rspidx != portRspPut) */
if ((rspiocbp != NULL) && (mask & HA_R0RE_REQ)) {
/* At least one response entry has been freed */
pring->stats.iocb_rsp_full++;
/* SET RxRE_RSP in Chip Att register */
status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
writel(status, phba->CAregaddr);
readl(phba->CAregaddr); /* flush */
}
if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
pring->stats.iocb_cmd_empty++;
/* Force update of the local copy of cmdGetInx */
pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
lpfc_sli_resume_iocb(phba, pring);
if ((pring->lpfc_sli_cmd_available))
(pring->lpfc_sli_cmd_available) (phba, pring);
}
spin_unlock_irqrestore(&phba->hbalock, iflag);
return;
}
/**
* lpfc_sli_handle_slow_ring_event_s4 - Handle SLI4 slow-path els events
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @mask: Host attention register mask for this ring.
*
* This function is called from the worker thread when there is a pending
* ELS response iocb on the driver internal slow-path response iocb worker
* queue. The caller does not hold any lock. The function will remove each
* response iocb from the response worker queue and calls the handle
* response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it.
**/
static void
lpfc_sli_handle_slow_ring_event_s4(struct lpfc_hba *phba,
struct lpfc_sli_ring *pring, uint32_t mask)
{
struct lpfc_iocbq *irspiocbq;
unsigned long iflag;
while (!list_empty(&phba->sli4_hba.sp_rspiocb_work_queue)) {
/* Get the response iocb from the head of work queue */
spin_lock_irqsave(&phba->hbalock, iflag);
list_remove_head(&phba->sli4_hba.sp_rspiocb_work_queue,
irspiocbq, struct lpfc_iocbq, list);
spin_unlock_irqrestore(&phba->hbalock, iflag);
/* Process the response iocb */
lpfc_sli_sp_handle_rspiocb(phba, pring, irspiocbq);
}
}
/**
* lpfc_sli_abort_iocb_ring - Abort all iocbs in the ring
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
*
* This function aborts all iocbs in the given ring and frees all the iocb
* objects in txq. This function issues an abort iocb for all the iocb commands
* in txcmplq. The iocbs in the txcmplq is not guaranteed to complete before
* the return of this function. The caller is not required to hold any locks.
**/
void
lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
{
LIST_HEAD(completions);
struct lpfc_iocbq *iocb, *next_iocb;
if (pring->ringno == LPFC_ELS_RING) {
lpfc_fabric_abort_hba(phba);
}
/* Error everything on txq and txcmplq
* First do the txq.
*/
spin_lock_irq(&phba->hbalock);
list_splice_init(&pring->txq, &completions);
pring->txq_cnt = 0;
/* Next issue ABTS for everything on the txcmplq */
list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list)
lpfc_sli_issue_abort_iotag(phba, pring, iocb);
spin_unlock_irq(&phba->hbalock);
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
IOERR_SLI_ABORTED);
}
/**
* lpfc_sli_flush_fcp_rings - flush all iocbs in the fcp ring
* @phba: Pointer to HBA context object.
*
* This function flushes all iocbs in the fcp ring and frees all the iocb
* objects in txq and txcmplq. This function will not issue abort iocbs
* for all the iocb commands in txcmplq, they will just be returned with
* IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI
* slot has been permanently disabled.
**/
void
lpfc_sli_flush_fcp_rings(struct lpfc_hba *phba)
{
LIST_HEAD(txq);
LIST_HEAD(txcmplq);
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring;
/* Currently, only one fcp ring */
pring = &psli->ring[psli->fcp_ring];
spin_lock_irq(&phba->hbalock);
/* Retrieve everything on txq */
list_splice_init(&pring->txq, &txq);
pring->txq_cnt = 0;
/* Retrieve everything on the txcmplq */
list_splice_init(&pring->txcmplq, &txcmplq);
pring->txcmplq_cnt = 0;
spin_unlock_irq(&phba->hbalock);
/* Flush the txq */
lpfc_sli_cancel_iocbs(phba, &txq, IOSTAT_LOCAL_REJECT,
IOERR_SLI_DOWN);
/* Flush the txcmpq */
lpfc_sli_cancel_iocbs(phba, &txcmplq, IOSTAT_LOCAL_REJECT,
IOERR_SLI_DOWN);
}
/**
* lpfc_sli_brdready_s3 - Check for sli3 host ready status
* @phba: Pointer to HBA context object.
* @mask: Bit mask to be checked.
*
* This function reads the host status register and compares
* with the provided bit mask to check if HBA completed
* the restart. This function will wait in a loop for the
* HBA to complete restart. If the HBA does not restart within
* 15 iterations, the function will reset the HBA again. The
* function returns 1 when HBA fail to restart otherwise returns
* zero.
**/
static int
lpfc_sli_brdready_s3(struct lpfc_hba *phba, uint32_t mask)
{
uint32_t status;
int i = 0;
int retval = 0;
/* Read the HBA Host Status Register */
status = readl(phba->HSregaddr);
/*
* Check status register every 100ms for 5 retries, then every
* 500ms for 5, then every 2.5 sec for 5, then reset board and
* every 2.5 sec for 4.
* Break our of the loop if errors occurred during init.
*/
while (((status & mask) != mask) &&
!(status & HS_FFERM) &&
i++ < 20) {
if (i <= 5)
msleep(10);
else if (i <= 10)
msleep(500);
else
msleep(2500);
if (i == 15) {
/* Do post */
phba->pport->port_state = LPFC_VPORT_UNKNOWN;
lpfc_sli_brdrestart(phba);
}
/* Read the HBA Host Status Register */
status = readl(phba->HSregaddr);
}
/* Check to see if any errors occurred during init */
if ((status & HS_FFERM) || (i >= 20)) {
phba->link_state = LPFC_HBA_ERROR;
retval = 1;
}
return retval;
}
/**
* lpfc_sli_brdready_s4 - Check for sli4 host ready status
* @phba: Pointer to HBA context object.
* @mask: Bit mask to be checked.
*
* This function checks the host status register to check if HBA is
* ready. This function will wait in a loop for the HBA to be ready
* If the HBA is not ready , the function will will reset the HBA PCI
* function again. The function returns 1 when HBA fail to be ready
* otherwise returns zero.
**/
static int
lpfc_sli_brdready_s4(struct lpfc_hba *phba, uint32_t mask)
{
uint32_t status;
int retval = 0;
/* Read the HBA Host Status Register */
status = lpfc_sli4_post_status_check(phba);
if (status) {
phba->pport->port_state = LPFC_VPORT_UNKNOWN;
lpfc_sli_brdrestart(phba);
status = lpfc_sli4_post_status_check(phba);
}
/* Check to see if any errors occurred during init */
if (status) {
phba->link_state = LPFC_HBA_ERROR;
retval = 1;
} else
phba->sli4_hba.intr_enable = 0;
return retval;
}
/**
* lpfc_sli_brdready - Wrapper func for checking the hba readyness
* @phba: Pointer to HBA context object.
* @mask: Bit mask to be checked.
*
* This routine wraps the actual SLI3 or SLI4 hba readyness check routine
* from the API jump table function pointer from the lpfc_hba struct.
**/
int
lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask)
{
return phba->lpfc_sli_brdready(phba, mask);
}
#define BARRIER_TEST_PATTERN (0xdeadbeef)
/**
* lpfc_reset_barrier - Make HBA ready for HBA reset
* @phba: Pointer to HBA context object.
*
* This function is called before resetting an HBA. This
* function requests HBA to quiesce DMAs before a reset.
**/
void lpfc_reset_barrier(struct lpfc_hba *phba)
{
uint32_t __iomem *resp_buf;
uint32_t __iomem *mbox_buf;
volatile uint32_t mbox;
uint32_t hc_copy;
int i;
uint8_t hdrtype;
pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype);
if (hdrtype != 0x80 ||
(FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID &&
FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID))
return;
/*
* Tell the other part of the chip to suspend temporarily all
* its DMA activity.
*/
resp_buf = phba->MBslimaddr;
/* Disable the error attention */
hc_copy = readl(phba->HCregaddr);
writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
phba->link_flag |= LS_IGNORE_ERATT;
if (readl(phba->HAregaddr) & HA_ERATT) {
/* Clear Chip error bit */
writel(HA_ERATT, phba->HAregaddr);
phba->pport->stopped = 1;
}
mbox = 0;
((MAILBOX_t *)&mbox)->mbxCommand = MBX_KILL_BOARD;
((MAILBOX_t *)&mbox)->mbxOwner = OWN_CHIP;
writel(BARRIER_TEST_PATTERN, (resp_buf + 1));
mbox_buf = phba->MBslimaddr;
writel(mbox, mbox_buf);
for (i = 0;
readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN) && i < 50; i++)
mdelay(1);
if (readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN)) {
if (phba->sli.sli_flag & LPFC_SLI_ACTIVE ||
phba->pport->stopped)
goto restore_hc;
else
goto clear_errat;
}
((MAILBOX_t *)&mbox)->mbxOwner = OWN_HOST;
for (i = 0; readl(resp_buf) != mbox && i < 500; i++)
mdelay(1);
clear_errat:
while (!(readl(phba->HAregaddr) & HA_ERATT) && ++i < 500)
mdelay(1);
if (readl(phba->HAregaddr) & HA_ERATT) {
writel(HA_ERATT, phba->HAregaddr);
phba->pport->stopped = 1;
}
restore_hc:
phba->link_flag &= ~LS_IGNORE_ERATT;
writel(hc_copy, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
}
/**
* lpfc_sli_brdkill - Issue a kill_board mailbox command
* @phba: Pointer to HBA context object.
*
* This function issues a kill_board mailbox command and waits for
* the error attention interrupt. This function is called for stopping
* the firmware processing. The caller is not required to hold any
* locks. This function calls lpfc_hba_down_post function to free
* any pending commands after the kill. The function will return 1 when it
* fails to kill the board else will return 0.
**/
int
lpfc_sli_brdkill(struct lpfc_hba *phba)
{
struct lpfc_sli *psli;
LPFC_MBOXQ_t *pmb;
uint32_t status;
uint32_t ha_copy;
int retval;
int i = 0;
psli = &phba->sli;
/* Kill HBA */
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"0329 Kill HBA Data: x%x x%x\n",
phba->pport->port_state, psli->sli_flag);
pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmb)
return 1;
/* Disable the error attention */
spin_lock_irq(&phba->hbalock);
status = readl(phba->HCregaddr);
status &= ~HC_ERINT_ENA;
writel(status, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
phba->link_flag |= LS_IGNORE_ERATT;
spin_unlock_irq(&phba->hbalock);
lpfc_kill_board(phba, pmb);
pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
if (retval != MBX_SUCCESS) {
if (retval != MBX_BUSY)
mempool_free(pmb, phba->mbox_mem_pool);
spin_lock_irq(&phba->hbalock);
phba->link_flag &= ~LS_IGNORE_ERATT;
spin_unlock_irq(&phba->hbalock);
return 1;
}
spin_lock_irq(&phba->hbalock);
psli->sli_flag &= ~LPFC_SLI_ACTIVE;
spin_unlock_irq(&phba->hbalock);
mempool_free(pmb, phba->mbox_mem_pool);
/* There is no completion for a KILL_BOARD mbox cmd. Check for an error
* attention every 100ms for 3 seconds. If we don't get ERATT after
* 3 seconds we still set HBA_ERROR state because the status of the
* board is now undefined.
*/
ha_copy = readl(phba->HAregaddr);
while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
mdelay(100);
ha_copy = readl(phba->HAregaddr);
}
del_timer_sync(&psli->mbox_tmo);
if (ha_copy & HA_ERATT) {
writel(HA_ERATT, phba->HAregaddr);
phba->pport->stopped = 1;
}
spin_lock_irq(&phba->hbalock);
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
psli->mbox_active = NULL;
phba->link_flag &= ~LS_IGNORE_ERATT;
spin_unlock_irq(&phba->hbalock);
lpfc_hba_down_post(phba);
phba->link_state = LPFC_HBA_ERROR;
return ha_copy & HA_ERATT ? 0 : 1;
}
/**
* lpfc_sli_brdreset - Reset a sli-2 or sli-3 HBA
* @phba: Pointer to HBA context object.
*
* This function resets the HBA by writing HC_INITFF to the control
* register. After the HBA resets, this function resets all the iocb ring
* indices. This function disables PCI layer parity checking during
* the reset.
* This function returns 0 always.
* The caller is not required to hold any locks.
**/
int
lpfc_sli_brdreset(struct lpfc_hba *phba)
{
struct lpfc_sli *psli;
struct lpfc_sli_ring *pring;
uint16_t cfg_value;
int i;
psli = &phba->sli;
/* Reset HBA */
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"0325 Reset HBA Data: x%x x%x\n",
phba->pport->port_state, psli->sli_flag);
/* perform board reset */
phba->fc_eventTag = 0;
phba->pport->fc_myDID = 0;
phba->pport->fc_prevDID = 0;
/* Turn off parity checking and serr during the physical reset */
pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
pci_write_config_word(phba->pcidev, PCI_COMMAND,
(cfg_value &
~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
psli->sli_flag &= ~(LPFC_SLI_ACTIVE | LPFC_PROCESS_LA);
/* Now toggle INITFF bit in the Host Control Register */
writel(HC_INITFF, phba->HCregaddr);
mdelay(1);
readl(phba->HCregaddr); /* flush */
writel(0, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
/* Restore PCI cmd register */
pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
/* Initialize relevant SLI info */
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
pring->flag = 0;
pring->rspidx = 0;
pring->next_cmdidx = 0;
pring->local_getidx = 0;
pring->cmdidx = 0;
pring->missbufcnt = 0;
}
phba->link_state = LPFC_WARM_START;
return 0;
}
/**
* lpfc_sli4_brdreset - Reset a sli-4 HBA
* @phba: Pointer to HBA context object.
*
* This function resets a SLI4 HBA. This function disables PCI layer parity
* checking during resets the device. The caller is not required to hold
* any locks.
*
* This function returns 0 always.
**/
int
lpfc_sli4_brdreset(struct lpfc_hba *phba)
{
struct lpfc_sli *psli = &phba->sli;
uint16_t cfg_value;
uint8_t qindx;
/* Reset HBA */
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"0295 Reset HBA Data: x%x x%x\n",
phba->pport->port_state, psli->sli_flag);
/* perform board reset */
phba->fc_eventTag = 0;
phba->pport->fc_myDID = 0;
phba->pport->fc_prevDID = 0;
/* Turn off parity checking and serr during the physical reset */
pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
pci_write_config_word(phba->pcidev, PCI_COMMAND,
(cfg_value &
~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
spin_lock_irq(&phba->hbalock);
psli->sli_flag &= ~(LPFC_PROCESS_LA);
phba->fcf.fcf_flag = 0;
/* Clean up the child queue list for the CQs */
list_del_init(&phba->sli4_hba.mbx_wq->list);
list_del_init(&phba->sli4_hba.els_wq->list);
list_del_init(&phba->sli4_hba.hdr_rq->list);
list_del_init(&phba->sli4_hba.dat_rq->list);
list_del_init(&phba->sli4_hba.mbx_cq->list);
list_del_init(&phba->sli4_hba.els_cq->list);
list_del_init(&phba->sli4_hba.rxq_cq->list);
for (qindx = 0; qindx < phba->cfg_fcp_wq_count; qindx++)
list_del_init(&phba->sli4_hba.fcp_wq[qindx]->list);
for (qindx = 0; qindx < phba->cfg_fcp_eq_count; qindx++)
list_del_init(&phba->sli4_hba.fcp_cq[qindx]->list);
spin_unlock_irq(&phba->hbalock);
/* Now physically reset the device */
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"0389 Performing PCI function reset!\n");
/* Perform FCoE PCI function reset */
lpfc_pci_function_reset(phba);
return 0;
}
/**
* lpfc_sli_brdrestart_s3 - Restart a sli-3 hba
* @phba: Pointer to HBA context object.
*
* This function is called in the SLI initialization code path to
* restart the HBA. The caller is not required to hold any lock.
* This function writes MBX_RESTART mailbox command to the SLIM and
* resets the HBA. At the end of the function, it calls lpfc_hba_down_post
* function to free any pending commands. The function enables
* POST only during the first initialization. The function returns zero.
* The function does not guarantee completion of MBX_RESTART mailbox
* command before the return of this function.
**/
static int
lpfc_sli_brdrestart_s3(struct lpfc_hba *phba)
{
MAILBOX_t *mb;
struct lpfc_sli *psli;
volatile uint32_t word0;
void __iomem *to_slim;
spin_lock_irq(&phba->hbalock);
psli = &phba->sli;
/* Restart HBA */
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"0337 Restart HBA Data: x%x x%x\n",
phba->pport->port_state, psli->sli_flag);
word0 = 0;
mb = (MAILBOX_t *) &word0;
mb->mbxCommand = MBX_RESTART;
mb->mbxHc = 1;
lpfc_reset_barrier(phba);
to_slim = phba->MBslimaddr;
writel(*(uint32_t *) mb, to_slim);
readl(to_slim); /* flush */
/* Only skip post after fc_ffinit is completed */
if (phba->pport->port_state)
word0 = 1; /* This is really setting up word1 */
else
word0 = 0; /* This is really setting up word1 */
to_slim = phba->MBslimaddr + sizeof (uint32_t);
writel(*(uint32_t *) mb, to_slim);
readl(to_slim); /* flush */
lpfc_sli_brdreset(phba);
phba->pport->stopped = 0;
phba->link_state = LPFC_INIT_START;
phba->hba_flag = 0;
spin_unlock_irq(&phba->hbalock);
memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
psli->stats_start = get_seconds();
/* Give the INITFF and Post time to settle. */
mdelay(100);
lpfc_hba_down_post(phba);
return 0;
}
/**
* lpfc_sli_brdrestart_s4 - Restart the sli-4 hba
* @phba: Pointer to HBA context object.
*
* This function is called in the SLI initialization code path to restart
* a SLI4 HBA. The caller is not required to hold any lock.
* At the end of the function, it calls lpfc_hba_down_post function to
* free any pending commands.
**/
static int
lpfc_sli_brdrestart_s4(struct lpfc_hba *phba)
{
struct lpfc_sli *psli = &phba->sli;
/* Restart HBA */
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"0296 Restart HBA Data: x%x x%x\n",
phba->pport->port_state, psli->sli_flag);
lpfc_sli4_brdreset(phba);
spin_lock_irq(&phba->hbalock);
phba->pport->stopped = 0;
phba->link_state = LPFC_INIT_START;
phba->hba_flag = 0;
spin_unlock_irq(&phba->hbalock);
memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
psli->stats_start = get_seconds();
lpfc_hba_down_post(phba);
return 0;
}
/**
* lpfc_sli_brdrestart - Wrapper func for restarting hba
* @phba: Pointer to HBA context object.
*
* This routine wraps the actual SLI3 or SLI4 hba restart routine from the
* API jump table function pointer from the lpfc_hba struct.
**/
int
lpfc_sli_brdrestart(struct lpfc_hba *phba)
{
return phba->lpfc_sli_brdrestart(phba);
}
/**
* lpfc_sli_chipset_init - Wait for the restart of the HBA after a restart
* @phba: Pointer to HBA context object.
*
* This function is called after a HBA restart to wait for successful
* restart of the HBA. Successful restart of the HBA is indicated by
* HS_FFRDY and HS_MBRDY bits. If the HBA fails to restart even after 15
* iteration, the function will restart the HBA again. The function returns
* zero if HBA successfully restarted else returns negative error code.
**/
static int
lpfc_sli_chipset_init(struct lpfc_hba *phba)
{
uint32_t status, i = 0;
/* Read the HBA Host Status Register */
status = readl(phba->HSregaddr);
/* Check status register to see what current state is */
i = 0;
while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
/* Check every 100ms for 5 retries, then every 500ms for 5, then
* every 2.5 sec for 5, then reset board and every 2.5 sec for
* 4.
*/
if (i++ >= 20) {
/* Adapter failed to init, timeout, status reg
<status> */
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0436 Adapter failed to init, "
"timeout, status reg x%x, "
"FW Data: A8 x%x AC x%x\n", status,
readl(phba->MBslimaddr + 0xa8),
readl(phba->MBslimaddr + 0xac));
phba->link_state = LPFC_HBA_ERROR;
return -ETIMEDOUT;
}
/* Check to see if any errors occurred during init */
if (status & HS_FFERM) {
/* ERROR: During chipset initialization */
/* Adapter failed to init, chipset, status reg
<status> */
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0437 Adapter failed to init, "
"chipset, status reg x%x, "
"FW Data: A8 x%x AC x%x\n", status,
readl(phba->MBslimaddr + 0xa8),
readl(phba->MBslimaddr + 0xac));
phba->link_state = LPFC_HBA_ERROR;
return -EIO;
}
if (i <= 5) {
msleep(10);
} else if (i <= 10) {
msleep(500);
} else {
msleep(2500);
}
if (i == 15) {
/* Do post */
phba->pport->port_state = LPFC_VPORT_UNKNOWN;
lpfc_sli_brdrestart(phba);
}
/* Read the HBA Host Status Register */
status = readl(phba->HSregaddr);
}
/* Check to see if any errors occurred during init */
if (status & HS_FFERM) {
/* ERROR: During chipset initialization */
/* Adapter failed to init, chipset, status reg <status> */
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0438 Adapter failed to init, chipset, "
"status reg x%x, "
"FW Data: A8 x%x AC x%x\n", status,
readl(phba->MBslimaddr + 0xa8),
readl(phba->MBslimaddr + 0xac));
phba->link_state = LPFC_HBA_ERROR;
return -EIO;
}
/* Clear all interrupt enable conditions */
writel(0, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
/* setup host attn register */
writel(0xffffffff, phba->HAregaddr);
readl(phba->HAregaddr); /* flush */
return 0;
}
/**
* lpfc_sli_hbq_count - Get the number of HBQs to be configured
*
* This function calculates and returns the number of HBQs required to be
* configured.
**/
int
lpfc_sli_hbq_count(void)
{
return ARRAY_SIZE(lpfc_hbq_defs);
}
/**
* lpfc_sli_hbq_entry_count - Calculate total number of hbq entries
*
* This function adds the number of hbq entries in every HBQ to get
* the total number of hbq entries required for the HBA and returns
* the total count.
**/
static int
lpfc_sli_hbq_entry_count(void)
{
int hbq_count = lpfc_sli_hbq_count();
int count = 0;
int i;
for (i = 0; i < hbq_count; ++i)
count += lpfc_hbq_defs[i]->entry_count;
return count;
}
/**
* lpfc_sli_hbq_size - Calculate memory required for all hbq entries
*
* This function calculates amount of memory required for all hbq entries
* to be configured and returns the total memory required.
**/
int
lpfc_sli_hbq_size(void)
{
return lpfc_sli_hbq_entry_count() * sizeof(struct lpfc_hbq_entry);
}
/**
* lpfc_sli_hbq_setup - configure and initialize HBQs
* @phba: Pointer to HBA context object.
*
* This function is called during the SLI initialization to configure
* all the HBQs and post buffers to the HBQ. The caller is not
* required to hold any locks. This function will return zero if successful
* else it will return negative error code.
**/
static int
lpfc_sli_hbq_setup(struct lpfc_hba *phba)
{
int hbq_count = lpfc_sli_hbq_count();
LPFC_MBOXQ_t *pmb;
MAILBOX_t *pmbox;
uint32_t hbqno;
uint32_t hbq_entry_index;
/* Get a Mailbox buffer to setup mailbox
* commands for HBA initialization
*/
pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmb)
return -ENOMEM;
pmbox = &pmb->u.mb;
/* Initialize the struct lpfc_sli_hbq structure for each hbq */
phba->link_state = LPFC_INIT_MBX_CMDS;
phba->hbq_in_use = 1;
hbq_entry_index = 0;
for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
phba->hbqs[hbqno].next_hbqPutIdx = 0;
phba->hbqs[hbqno].hbqPutIdx = 0;
phba->hbqs[hbqno].local_hbqGetIdx = 0;
phba->hbqs[hbqno].entry_count =
lpfc_hbq_defs[hbqno]->entry_count;
lpfc_config_hbq(phba, hbqno, lpfc_hbq_defs[hbqno],
hbq_entry_index, pmb);
hbq_entry_index += phba->hbqs[hbqno].entry_count;
if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
/* Adapter failed to init, mbxCmd <cmd> CFG_RING,
mbxStatus <status>, ring <num> */
lpfc_printf_log(phba, KERN_ERR,
LOG_SLI | LOG_VPORT,
"1805 Adapter failed to init. "
"Data: x%x x%x x%x\n",
pmbox->mbxCommand,
pmbox->mbxStatus, hbqno);
phba->link_state = LPFC_HBA_ERROR;
mempool_free(pmb, phba->mbox_mem_pool);
return ENXIO;
}
}
phba->hbq_count = hbq_count;
mempool_free(pmb, phba->mbox_mem_pool);
/* Initially populate or replenish the HBQs */
for (hbqno = 0; hbqno < hbq_count; ++hbqno)
lpfc_sli_hbqbuf_init_hbqs(phba, hbqno);
return 0;
}
/**
* lpfc_sli4_rb_setup - Initialize and post RBs to HBA
* @phba: Pointer to HBA context object.
*
* This function is called during the SLI initialization to configure
* all the HBQs and post buffers to the HBQ. The caller is not
* required to hold any locks. This function will return zero if successful
* else it will return negative error code.
**/
static int
lpfc_sli4_rb_setup(struct lpfc_hba *phba)
{
phba->hbq_in_use = 1;
phba->hbqs[0].entry_count = lpfc_hbq_defs[0]->entry_count;
phba->hbq_count = 1;
/* Initially populate or replenish the HBQs */
lpfc_sli_hbqbuf_init_hbqs(phba, 0);
return 0;
}
/**
* lpfc_sli_config_port - Issue config port mailbox command
* @phba: Pointer to HBA context object.
* @sli_mode: sli mode - 2/3
*
* This function is called by the sli intialization code path
* to issue config_port mailbox command. This function restarts the
* HBA firmware and issues a config_port mailbox command to configure
* the SLI interface in the sli mode specified by sli_mode
* variable. The caller is not required to hold any locks.
* The function returns 0 if successful, else returns negative error
* code.
**/
int
lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode)
{
LPFC_MBOXQ_t *pmb;
uint32_t resetcount = 0, rc = 0, done = 0;
pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!pmb) {
phba->link_state = LPFC_HBA_ERROR;
return -ENOMEM;
}
phba->sli_rev = sli_mode;
while (resetcount < 2 && !done) {
spin_lock_irq(&phba->hbalock);
phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irq(&phba->hbalock);
phba->pport->port_state = LPFC_VPORT_UNKNOWN;
lpfc_sli_brdrestart(phba);
rc = lpfc_sli_chipset_init(phba);
if (rc)
break;
spin_lock_irq(&phba->hbalock);
phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irq(&phba->hbalock);
resetcount++;
/* Call pre CONFIG_PORT mailbox command initialization. A
* value of 0 means the call was successful. Any other
* nonzero value is a failure, but if ERESTART is returned,
* the driver may reset the HBA and try again.
*/
rc = lpfc_config_port_prep(phba);
if (rc == -ERESTART) {
phba->link_state = LPFC_LINK_UNKNOWN;
continue;
} else if (rc)
break;
phba->link_state = LPFC_INIT_MBX_CMDS;
lpfc_config_port(phba, pmb);
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
phba->sli3_options &= ~(LPFC_SLI3_NPIV_ENABLED |
LPFC_SLI3_HBQ_ENABLED |
LPFC_SLI3_CRP_ENABLED |
LPFC_SLI3_INB_ENABLED |
LPFC_SLI3_BG_ENABLED);
if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0442 Adapter failed to init, mbxCmd x%x "
"CONFIG_PORT, mbxStatus x%x Data: x%x\n",
pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus, 0);
spin_lock_irq(&phba->hbalock);
phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE;
spin_unlock_irq(&phba->hbalock);
rc = -ENXIO;
} else {
/* Allow asynchronous mailbox command to go through */
spin_lock_irq(&phba->hbalock);
phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
spin_unlock_irq(&phba->hbalock);
done = 1;
}
}
if (!done) {
rc = -EINVAL;
goto do_prep_failed;
}
if (pmb->u.mb.un.varCfgPort.sli_mode == 3) {
if (!pmb->u.mb.un.varCfgPort.cMA) {
rc = -ENXIO;
goto do_prep_failed;
}
if (phba->max_vpi && pmb->u.mb.un.varCfgPort.gmv) {
phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
phba->max_vpi = pmb->u.mb.un.varCfgPort.max_vpi;
phba->max_vports = (phba->max_vpi > phba->max_vports) ?
phba->max_vpi : phba->max_vports;
} else
phba->max_vpi = 0;
if (pmb->u.mb.un.varCfgPort.gdss)
phba->sli3_options |= LPFC_SLI3_DSS_ENABLED;
if (pmb->u.mb.un.varCfgPort.gerbm)
phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED;
if (pmb->u.mb.un.varCfgPort.gcrp)
phba->sli3_options |= LPFC_SLI3_CRP_ENABLED;
if (pmb->u.mb.un.varCfgPort.ginb) {
phba->sli3_options |= LPFC_SLI3_INB_ENABLED;
phba->hbq_get = phba->mbox->us.s3_inb_pgp.hbq_get;
phba->port_gp = phba->mbox->us.s3_inb_pgp.port;
phba->inb_ha_copy = &phba->mbox->us.s3_inb_pgp.ha_copy;
phba->inb_counter = &phba->mbox->us.s3_inb_pgp.counter;
phba->inb_last_counter =
phba->mbox->us.s3_inb_pgp.counter;
} else {
phba->hbq_get = phba->mbox->us.s3_pgp.hbq_get;
phba->port_gp = phba->mbox->us.s3_pgp.port;
phba->inb_ha_copy = NULL;
phba->inb_counter = NULL;
}
if (phba->cfg_enable_bg) {
if (pmb->u.mb.un.varCfgPort.gbg)
phba->sli3_options |= LPFC_SLI3_BG_ENABLED;
else
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0443 Adapter did not grant "
"BlockGuard\n");
}
} else {
phba->hbq_get = NULL;
phba->port_gp = phba->mbox->us.s2.port;
phba->inb_ha_copy = NULL;
phba->inb_counter = NULL;
phba->max_vpi = 0;
}
do_prep_failed:
mempool_free(pmb, phba->mbox_mem_pool);
return rc;
}
/**
* lpfc_sli_hba_setup - SLI intialization function
* @phba: Pointer to HBA context object.
*
* This function is the main SLI intialization function. This function
* is called by the HBA intialization code, HBA reset code and HBA
* error attention handler code. Caller is not required to hold any
* locks. This function issues config_port mailbox command to configure
* the SLI, setup iocb rings and HBQ rings. In the end the function
* calls the config_port_post function to issue init_link mailbox
* command and to start the discovery. The function will return zero
* if successful, else it will return negative error code.
**/
int
lpfc_sli_hba_setup(struct lpfc_hba *phba)
{
uint32_t rc;
int mode = 3;
switch (lpfc_sli_mode) {
case 2:
if (phba->cfg_enable_npiv) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
"1824 NPIV enabled: Override lpfc_sli_mode "
"parameter (%d) to auto (0).\n",
lpfc_sli_mode);
break;
}
mode = 2;
break;
case 0:
case 3:
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
"1819 Unrecognized lpfc_sli_mode "
"parameter: %d.\n", lpfc_sli_mode);
break;
}
rc = lpfc_sli_config_port(phba, mode);
if (rc && lpfc_sli_mode == 3)
lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
"1820 Unable to select SLI-3. "
"Not supported by adapter.\n");
if (rc && mode != 2)
rc = lpfc_sli_config_port(phba, 2);
if (rc)
goto lpfc_sli_hba_setup_error;
if (phba->sli_rev == 3) {
phba->iocb_cmd_size = SLI3_IOCB_CMD_SIZE;
phba->iocb_rsp_size = SLI3_IOCB_RSP_SIZE;
} else {
phba->iocb_cmd_size = SLI2_IOCB_CMD_SIZE;
phba->iocb_rsp_size = SLI2_IOCB_RSP_SIZE;
phba->sli3_options = 0;
}
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"0444 Firmware in SLI %x mode. Max_vpi %d\n",
phba->sli_rev, phba->max_vpi);
rc = lpfc_sli_ring_map(phba);
if (rc)
goto lpfc_sli_hba_setup_error;
/* Init HBQs */
if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
rc = lpfc_sli_hbq_setup(phba);
if (rc)
goto lpfc_sli_hba_setup_error;
}
spin_lock_irq(&phba->hbalock);
phba->sli.sli_flag |= LPFC_PROCESS_LA;
spin_unlock_irq(&phba->hbalock);
rc = lpfc_config_port_post(phba);
if (rc)
goto lpfc_sli_hba_setup_error;
return rc;
lpfc_sli_hba_setup_error:
phba->link_state = LPFC_HBA_ERROR;
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"0445 Firmware initialization failed\n");
return rc;
}
/**
* lpfc_sli4_read_fcoe_params - Read fcoe params from conf region
* @phba: Pointer to HBA context object.
* @mboxq: mailbox pointer.
* This function issue a dump mailbox command to read config region
* 23 and parse the records in the region and populate driver
* data structure.
**/
static int
lpfc_sli4_read_fcoe_params(struct lpfc_hba *phba,
LPFC_MBOXQ_t *mboxq)
{
struct lpfc_dmabuf *mp;
struct lpfc_mqe *mqe;
uint32_t data_length;
int rc;
/* Program the default value of vlan_id and fc_map */
phba->valid_vlan = 0;
phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
mqe = &mboxq->u.mqe;
if (lpfc_dump_fcoe_param(phba, mboxq))
return -ENOMEM;
mp = (struct lpfc_dmabuf *) mboxq->context1;
rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
"(%d):2571 Mailbox cmd x%x Status x%x "
"Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x "
"x%x x%x x%x x%x x%x x%x x%x x%x x%x "
"CQ: x%x x%x x%x x%x\n",
mboxq->vport ? mboxq->vport->vpi : 0,
bf_get(lpfc_mqe_command, mqe),
bf_get(lpfc_mqe_status, mqe),
mqe->un.mb_words[0], mqe->un.mb_words[1],
mqe->un.mb_words[2], mqe->un.mb_words[3],
mqe->un.mb_words[4], mqe->un.mb_words[5],
mqe->un.mb_words[6], mqe->un.mb_words[7],
mqe->un.mb_words[8], mqe->un.mb_words[9],
mqe->un.mb_words[10], mqe->un.mb_words[11],
mqe->un.mb_words[12], mqe->un.mb_words[13],
mqe->un.mb_words[14], mqe->un.mb_words[15],
mqe->un.mb_words[16], mqe->un.mb_words[50],
mboxq->mcqe.word0,
mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1,
mboxq->mcqe.trailer);
if (rc) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
return -EIO;
}
data_length = mqe->un.mb_words[5];
if (data_length > DMP_FCOEPARAM_RGN_SIZE) {
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
return -EIO;
}
lpfc_parse_fcoe_conf(phba, mp->virt, data_length);
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
return 0;
}
/**
* lpfc_sli4_read_rev - Issue READ_REV and collect vpd data
* @phba: pointer to lpfc hba data structure.
* @mboxq: pointer to the LPFC_MBOXQ_t structure.
* @vpd: pointer to the memory to hold resulting port vpd data.
* @vpd_size: On input, the number of bytes allocated to @vpd.
* On output, the number of data bytes in @vpd.
*
* This routine executes a READ_REV SLI4 mailbox command. In
* addition, this routine gets the port vpd data.
*
* Return codes
* 0 - sucessful
* ENOMEM - could not allocated memory.
**/
static int
lpfc_sli4_read_rev(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
uint8_t *vpd, uint32_t *vpd_size)
{
int rc = 0;
uint32_t dma_size;
struct lpfc_dmabuf *dmabuf;
struct lpfc_mqe *mqe;
dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
if (!dmabuf)
return -ENOMEM;
/*
* Get a DMA buffer for the vpd data resulting from the READ_REV
* mailbox command.
*/
dma_size = *vpd_size;
dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
dma_size,
&dmabuf->phys,
GFP_KERNEL);
if (!dmabuf->virt) {
kfree(dmabuf);
return -ENOMEM;
}
memset(dmabuf->virt, 0, dma_size);
/*
* The SLI4 implementation of READ_REV conflicts at word1,
* bits 31:16 and SLI4 adds vpd functionality not present
* in SLI3. This code corrects the conflicts.
*/
lpfc_read_rev(phba, mboxq);
mqe = &mboxq->u.mqe;
mqe->un.read_rev.vpd_paddr_high = putPaddrHigh(dmabuf->phys);
mqe->un.read_rev.vpd_paddr_low = putPaddrLow(dmabuf->phys);
mqe->un.read_rev.word1 &= 0x0000FFFF;
bf_set(lpfc_mbx_rd_rev_vpd, &mqe->un.read_rev, 1);
bf_set(lpfc_mbx_rd_rev_avail_len, &mqe->un.read_rev, dma_size);
rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
if (rc) {
dma_free_coherent(&phba->pcidev->dev, dma_size,
dmabuf->virt, dmabuf->phys);
return -EIO;
}
/*
* The available vpd length cannot be bigger than the
* DMA buffer passed to the port. Catch the less than
* case and update the caller's size.
*/
if (mqe->un.read_rev.avail_vpd_len < *vpd_size)
*vpd_size = mqe->un.read_rev.avail_vpd_len;
lpfc_sli_pcimem_bcopy(dmabuf->virt, vpd, *vpd_size);
dma_free_coherent(&phba->pcidev->dev, dma_size,
dmabuf->virt, dmabuf->phys);
kfree(dmabuf);
return 0;
}
/**
* lpfc_sli4_arm_cqeq_intr - Arm sli-4 device completion and event queues
* @phba: pointer to lpfc hba data structure.
*
* This routine is called to explicitly arm the SLI4 device's completion and
* event queues
**/
static void
lpfc_sli4_arm_cqeq_intr(struct lpfc_hba *phba)
{
uint8_t fcp_eqidx;
lpfc_sli4_cq_release(phba->sli4_hba.mbx_cq, LPFC_QUEUE_REARM);
lpfc_sli4_cq_release(phba->sli4_hba.els_cq, LPFC_QUEUE_REARM);
lpfc_sli4_cq_release(phba->sli4_hba.rxq_cq, LPFC_QUEUE_REARM);
for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++)
lpfc_sli4_cq_release(phba->sli4_hba.fcp_cq[fcp_eqidx],
LPFC_QUEUE_REARM);
lpfc_sli4_eq_release(phba->sli4_hba.sp_eq, LPFC_QUEUE_REARM);
for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++)
lpfc_sli4_eq_release(phba->sli4_hba.fp_eq[fcp_eqidx],
LPFC_QUEUE_REARM);
}
/**
* lpfc_sli4_hba_setup - SLI4 device intialization PCI function
* @phba: Pointer to HBA context object.
*
* This function is the main SLI4 device intialization PCI function. This
* function is called by the HBA intialization code, HBA reset code and
* HBA error attention handler code. Caller is not required to hold any
* locks.
**/
int
lpfc_sli4_hba_setup(struct lpfc_hba *phba)
{
int rc;
LPFC_MBOXQ_t *mboxq;
struct lpfc_mqe *mqe;
uint8_t *vpd;
uint32_t vpd_size;
uint32_t ftr_rsp = 0;
struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport);
struct lpfc_vport *vport = phba->pport;
struct lpfc_dmabuf *mp;
/* Perform a PCI function reset to start from clean */
rc = lpfc_pci_function_reset(phba);
if (unlikely(rc))
return -ENODEV;
/* Check the HBA Host Status Register for readyness */
rc = lpfc_sli4_post_status_check(phba);
if (unlikely(rc))
return -ENODEV;
else {
spin_lock_irq(&phba->hbalock);
phba->sli.sli_flag |= LPFC_SLI_ACTIVE;
spin_unlock_irq(&phba->hbalock);
}
/*
* Allocate a single mailbox container for initializing the
* port.
*/
mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mboxq)
return -ENOMEM;
/*
* Continue initialization with default values even if driver failed
* to read FCoE param config regions
*/
if (lpfc_sli4_read_fcoe_params(phba, mboxq))
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT,
"2570 Failed to read FCoE parameters \n");
/* Issue READ_REV to collect vpd and FW information. */
vpd_size = PAGE_SIZE;
vpd = kzalloc(vpd_size, GFP_KERNEL);
if (!vpd) {
rc = -ENOMEM;
goto out_free_mbox;
}
rc = lpfc_sli4_read_rev(phba, mboxq, vpd, &vpd_size);
if (unlikely(rc))
goto out_free_vpd;
mqe = &mboxq->u.mqe;
phba->sli_rev = bf_get(lpfc_mbx_rd_rev_sli_lvl, &mqe->un.read_rev);
if (bf_get(lpfc_mbx_rd_rev_fcoe, &mqe->un.read_rev))
phba->hba_flag |= HBA_FCOE_SUPPORT;
if (phba->sli_rev != LPFC_SLI_REV4 ||
!(phba->hba_flag & HBA_FCOE_SUPPORT)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"0376 READ_REV Error. SLI Level %d "
"FCoE enabled %d\n",
phba->sli_rev, phba->hba_flag & HBA_FCOE_SUPPORT);
rc = -EIO;
goto out_free_vpd;
}
/*
* Evaluate the read rev and vpd data. Populate the driver
* state with the results. If this routine fails, the failure
* is not fatal as the driver will use generic values.
*/
rc = lpfc_parse_vpd(phba, vpd, vpd_size);
if (unlikely(!rc)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"0377 Error %d parsing vpd. "
"Using defaults.\n", rc);
rc = 0;
}
/* Save information as VPD data */
phba->vpd.rev.biuRev = mqe->un.read_rev.first_hw_rev;
phba->vpd.rev.smRev = mqe->un.read_rev.second_hw_rev;
phba->vpd.rev.endecRev = mqe->un.read_rev.third_hw_rev;
phba->vpd.rev.fcphHigh = bf_get(lpfc_mbx_rd_rev_fcph_high,
&mqe->un.read_rev);
phba->vpd.rev.fcphLow = bf_get(lpfc_mbx_rd_rev_fcph_low,
&mqe->un.read_rev);
phba->vpd.rev.feaLevelHigh = bf_get(lpfc_mbx_rd_rev_ftr_lvl_high,
&mqe->un.read_rev);
phba->vpd.rev.feaLevelLow = bf_get(lpfc_mbx_rd_rev_ftr_lvl_low,
&mqe->un.read_rev);
phba->vpd.rev.sli1FwRev = mqe->un.read_rev.fw_id_rev;
memcpy(phba->vpd.rev.sli1FwName, mqe->un.read_rev.fw_name, 16);
phba->vpd.rev.sli2FwRev = mqe->un.read_rev.ulp_fw_id_rev;
memcpy(phba->vpd.rev.sli2FwName, mqe->un.read_rev.ulp_fw_name, 16);
phba->vpd.rev.opFwRev = mqe->un.read_rev.fw_id_rev;
memcpy(phba->vpd.rev.opFwName, mqe->un.read_rev.fw_name, 16);
lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
"(%d):0380 READ_REV Status x%x "
"fw_rev:%s fcphHi:%x fcphLo:%x flHi:%x flLo:%x\n",
mboxq->vport ? mboxq->vport->vpi : 0,
bf_get(lpfc_mqe_status, mqe),
phba->vpd.rev.opFwName,
phba->vpd.rev.fcphHigh, phba->vpd.rev.fcphLow,
phba->vpd.rev.feaLevelHigh, phba->vpd.rev.feaLevelLow);
/*
* Discover the port's supported feature set and match it against the
* hosts requests.
*/
lpfc_request_features(phba, mboxq);
rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
if (unlikely(rc)) {
rc = -EIO;
goto out_free_vpd;
}
/*
* The port must support FCP initiator mode as this is the
* only mode running in the host.
*/
if (!(bf_get(lpfc_mbx_rq_ftr_rsp_fcpi, &mqe->un.req_ftrs))) {
lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
"0378 No support for fcpi mode.\n");
ftr_rsp++;
}
/*
* If the port cannot support the host's requested features
* then turn off the global config parameters to disable the
* feature in the driver. This is not a fatal error.
*/
if ((phba->cfg_enable_bg) &&
!(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs)))
ftr_rsp++;
if (phba->max_vpi && phba->cfg_enable_npiv &&
!(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs)))
ftr_rsp++;
if (ftr_rsp) {
lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
"0379 Feature Mismatch Data: x%08x %08x "
"x%x x%x x%x\n", mqe->un.req_ftrs.word2,
mqe->un.req_ftrs.word3, phba->cfg_enable_bg,
phba->cfg_enable_npiv, phba->max_vpi);
if (!(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs)))
phba->cfg_enable_bg = 0;
if (!(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs)))
phba->cfg_enable_npiv = 0;
}
/* These SLI3 features are assumed in SLI4 */
spin_lock_irq(&phba->hbalock);
phba->sli3_options |= (LPFC_SLI3_NPIV_ENABLED | LPFC_SLI3_HBQ_ENABLED);
spin_unlock_irq(&phba->hbalock);
/* Read the port's service parameters. */
lpfc_read_sparam(phba, mboxq, vport->vpi);
mboxq->vport = vport;
rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
mp = (struct lpfc_dmabuf *) mboxq->context1;
if (rc == MBX_SUCCESS) {
memcpy(&vport->fc_sparam, mp->virt, sizeof(struct serv_parm));
rc = 0;
}
/*
* This memory was allocated by the lpfc_read_sparam routine. Release
* it to the mbuf pool.
*/
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);
mboxq->context1 = NULL;
if (unlikely(rc)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"0382 READ_SPARAM command failed "
"status %d, mbxStatus x%x\n",
rc, bf_get(lpfc_mqe_status, mqe));
phba->link_state = LPFC_HBA_ERROR;
rc = -EIO;
goto out_free_vpd;
}
if (phba->cfg_soft_wwnn)
u64_to_wwn(phba->cfg_soft_wwnn,
vport->fc_sparam.nodeName.u.wwn);
if (phba->cfg_soft_wwpn)
u64_to_wwn(phba->cfg_soft_wwpn,
vport->fc_sparam.portName.u.wwn);
memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
sizeof(struct lpfc_name));
memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
sizeof(struct lpfc_name));
/* Update the fc_host data structures with new wwn. */
fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
/* Register SGL pool to the device using non-embedded mailbox command */
rc = lpfc_sli4_post_sgl_list(phba);
if (unlikely(rc)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"0582 Error %d during sgl post operation", rc);
rc = -ENODEV;
goto out_free_vpd;
}
/* Register SCSI SGL pool to the device */
rc = lpfc_sli4_repost_scsi_sgl_list(phba);
if (unlikely(rc)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
"0383 Error %d during scsi sgl post opeation",
rc);
/* Some Scsi buffers were moved to the abort scsi list */
/* A pci function reset will repost them */
rc = -ENODEV;
goto out_free_vpd;
}
/* Post the rpi header region to the device. */
rc = lpfc_sli4_post_all_rpi_hdrs(phba);
if (unlikely(rc)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"0393 Error %d during rpi post operation\n",
rc);
rc = -ENODEV;
goto out_free_vpd;
}
if (phba->cfg_enable_fip)
bf_set(lpfc_fip_flag, &phba->sli4_hba.sli4_flags, 1);
else
bf_set(lpfc_fip_flag, &phba->sli4_hba.sli4_flags, 0);
/* Set up all the queues to the device */
rc = lpfc_sli4_queue_setup(phba);
if (unlikely(rc)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"0381 Error %d during queue setup.\n ", rc);
goto out_stop_timers;
}
/* Arm the CQs and then EQs on device */
lpfc_sli4_arm_cqeq_intr(phba);
/* Indicate device interrupt mode */
phba->sli4_hba.intr_enable = 1;
/* Allow asynchronous mailbox command to go through */
spin_lock_irq(&phba->hbalock);
phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
spin_unlock_irq(&phba->hbalock);
/* Post receive buffers to the device */
lpfc_sli4_rb_setup(phba);
/* Start the ELS watchdog timer */
/*
* The driver for SLI4 is not yet ready to process timeouts
* or interrupts. Once it is, the comment bars can be removed.
*/
/* mod_timer(&vport->els_tmofunc,
* jiffies + HZ * (phba->fc_ratov*2)); */
/* Start heart beat timer */
mod_timer(&phba->hb_tmofunc,
jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
phba->hb_outstanding = 0;
phba->last_completion_time = jiffies;
/* Start error attention (ERATT) polling timer */
mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL);
/*
* The port is ready, set the host's link state to LINK_DOWN
* in preparation for link interrupts.
*/
lpfc_init_link(phba, mboxq, phba->cfg_topology, phba->cfg_link_speed);
mboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
lpfc_set_loopback_flag(phba);
/* Change driver state to LPFC_LINK_DOWN right before init link */
spin_lock_irq(&phba->hbalock);
phba->link_state = LPFC_LINK_DOWN;
spin_unlock_irq(&phba->hbalock);
rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
if (unlikely(rc != MBX_NOT_FINISHED)) {
kfree(vpd);
return 0;
} else
rc = -EIO;
/* Unset all the queues set up in this routine when error out */
if (rc)
lpfc_sli4_queue_unset(phba);
out_stop_timers:
if (rc)
lpfc_stop_hba_timers(phba);
out_free_vpd:
kfree(vpd);
out_free_mbox:
mempool_free(mboxq, phba->mbox_mem_pool);
return rc;
}
/**
* lpfc_mbox_timeout - Timeout call back function for mbox timer
* @ptr: context object - pointer to hba structure.
*
* This is the callback function for mailbox timer. The mailbox
* timer is armed when a new mailbox command is issued and the timer
* is deleted when the mailbox complete. The function is called by
* the kernel timer code when a mailbox does not complete within
* expected time. This function wakes up the worker thread to
* process the mailbox timeout and returns. All the processing is
* done by the worker thread function lpfc_mbox_timeout_handler.
**/
void
lpfc_mbox_timeout(unsigned long ptr)
{
struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
unsigned long iflag;
uint32_t tmo_posted;
spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
tmo_posted = phba->pport->work_port_events & WORKER_MBOX_TMO;
if (!tmo_posted)
phba->pport->work_port_events |= WORKER_MBOX_TMO;
spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
if (!tmo_posted)
lpfc_worker_wake_up(phba);
return;
}
/**
* lpfc_mbox_timeout_handler - Worker thread function to handle mailbox timeout
* @phba: Pointer to HBA context object.
*
* This function is called from worker thread when a mailbox command times out.
* The caller is not required to hold any locks. This function will reset the
* HBA and recover all the pending commands.
**/
void
lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
{
LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active;
MAILBOX_t *mb = &pmbox->u.mb;
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring;
/* Check the pmbox pointer first. There is a race condition
* between the mbox timeout handler getting executed in the
* worklist and the mailbox actually completing. When this
* race condition occurs, the mbox_active will be NULL.
*/
spin_lock_irq(&phba->hbalock);
if (pmbox == NULL) {
lpfc_printf_log(phba, KERN_WARNING,
LOG_MBOX | LOG_SLI,
"0353 Active Mailbox cleared - mailbox timeout "
"exiting\n");
spin_unlock_irq(&phba->hbalock);
return;
}
/* Mbox cmd <mbxCommand> timeout */
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
mb->mbxCommand,
phba->pport->port_state,
phba->sli.sli_flag,
phba->sli.mbox_active);
spin_unlock_irq(&phba->hbalock);
/* Setting state unknown so lpfc_sli_abort_iocb_ring
* would get IOCB_ERROR from lpfc_sli_issue_iocb, allowing
* it to fail all oustanding SCSI IO.
*/
spin_lock_irq(&phba->pport->work_port_lock);
phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
spin_unlock_irq(&phba->pport->work_port_lock);
spin_lock_irq(&phba->hbalock);
phba->link_state = LPFC_LINK_UNKNOWN;
psli->sli_flag &= ~LPFC_SLI_ACTIVE;
spin_unlock_irq(&phba->hbalock);
pring = &psli->ring[psli->fcp_ring];
lpfc_sli_abort_iocb_ring(phba, pring);
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"0345 Resetting board due to mailbox timeout\n");
/* Reset the HBA device */
lpfc_reset_hba(phba);
}
/**
* lpfc_sli_issue_mbox_s3 - Issue an SLI3 mailbox command to firmware
* @phba: Pointer to HBA context object.
* @pmbox: Pointer to mailbox object.
* @flag: Flag indicating how the mailbox need to be processed.
*
* This function is called by discovery code and HBA management code
* to submit a mailbox command to firmware with SLI-3 interface spec. This
* function gets the hbalock to protect the data structures.
* The mailbox command can be submitted in polling mode, in which case
* this function will wait in a polling loop for the completion of the
* mailbox.
* If the mailbox is submitted in no_wait mode (not polling) the
* function will submit the command and returns immediately without waiting
* for the mailbox completion. The no_wait is supported only when HBA
* is in SLI2/SLI3 mode - interrupts are enabled.
* The SLI interface allows only one mailbox pending at a time. If the
* mailbox is issued in polling mode and there is already a mailbox
* pending, then the function will return an error. If the mailbox is issued
* in NO_WAIT mode and there is a mailbox pending already, the function
* will return MBX_BUSY after queuing the mailbox into mailbox queue.
* The sli layer owns the mailbox object until the completion of mailbox
* command if this function return MBX_BUSY or MBX_SUCCESS. For all other
* return codes the caller owns the mailbox command after the return of
* the function.
**/
static int
lpfc_sli_issue_mbox_s3(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox,
uint32_t flag)
{
MAILBOX_t *mb;
struct lpfc_sli *psli = &phba->sli;
uint32_t status, evtctr;
uint32_t ha_copy;
int i;
unsigned long timeout;
unsigned long drvr_flag = 0;
uint32_t word0, ldata;
void __iomem *to_slim;
int processing_queue = 0;
spin_lock_irqsave(&phba->hbalock, drvr_flag);
if (!pmbox) {
/* processing mbox queue from intr_handler */
if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
return MBX_SUCCESS;
}
processing_queue = 1;
phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
pmbox = lpfc_mbox_get(phba);
if (!pmbox) {
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
return MBX_SUCCESS;
}
}
if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl &&
pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) {
if(!pmbox->vport) {
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
lpfc_printf_log(phba, KERN_ERR,
LOG_MBOX | LOG_VPORT,
"1806 Mbox x%x failed. No vport\n",
pmbox->u.mb.mbxCommand);
dump_stack();
goto out_not_finished;
}
}
/* If the PCI channel is in offline state, do not post mbox. */
if (unlikely(pci_channel_offline(phba->pcidev))) {
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
goto out_not_finished;
}
/* If HBA has a deferred error attention, fail the iocb. */
if (unlikely(phba->hba_flag & DEFER_ERATT)) {
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
goto out_not_finished;
}
psli = &phba->sli;
mb = &pmbox->u.mb;
status = MBX_SUCCESS;
if (phba->link_state == LPFC_HBA_ERROR) {
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
/* Mbox command <mbxCommand> cannot issue */
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"(%d):0311 Mailbox command x%x cannot "
"issue Data: x%x x%x\n",
pmbox->vport ? pmbox->vport->vpi : 0,
pmbox->u.mb.mbxCommand, psli->sli_flag, flag);
goto out_not_finished;
}
if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT &&
!(readl(phba->HCregaddr) & HC_MBINT_ENA)) {
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"(%d):2528 Mailbox command x%x cannot "
"issue Data: x%x x%x\n",
pmbox->vport ? pmbox->vport->vpi : 0,
pmbox->u.mb.mbxCommand, psli->sli_flag, flag);
goto out_not_finished;
}
if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
/* Polling for a mbox command when another one is already active
* is not allowed in SLI. Also, the driver must have established
* SLI2 mode to queue and process multiple mbox commands.
*/
if (flag & MBX_POLL) {
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
/* Mbox command <mbxCommand> cannot issue */
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"(%d):2529 Mailbox command x%x "
"cannot issue Data: x%x x%x\n",
pmbox->vport ? pmbox->vport->vpi : 0,
pmbox->u.mb.mbxCommand,
psli->sli_flag, flag);
goto out_not_finished;
}
if (!(psli->sli_flag & LPFC_SLI_ACTIVE)) {
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
/* Mbox command <mbxCommand> cannot issue */
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"(%d):2530 Mailbox command x%x "
"cannot issue Data: x%x x%x\n",
pmbox->vport ? pmbox->vport->vpi : 0,
pmbox->u.mb.mbxCommand,
psli->sli_flag, flag);
goto out_not_finished;
}
/* Another mailbox command is still being processed, queue this
* command to be processed later.
*/
lpfc_mbox_put(phba, pmbox);
/* Mbox cmd issue - BUSY */
lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
"(%d):0308 Mbox cmd issue - BUSY Data: "
"x%x x%x x%x x%x\n",
pmbox->vport ? pmbox->vport->vpi : 0xffffff,
mb->mbxCommand, phba->pport->port_state,
psli->sli_flag, flag);
psli->slistat.mbox_busy++;
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
if (pmbox->vport) {
lpfc_debugfs_disc_trc(pmbox->vport,
LPFC_DISC_TRC_MBOX_VPORT,
"MBOX Bsy vport: cmd:x%x mb:x%x x%x",
(uint32_t)mb->mbxCommand,
mb->un.varWords[0], mb->un.varWords[1]);
}
else {
lpfc_debugfs_disc_trc(phba->pport,
LPFC_DISC_TRC_MBOX,
"MBOX Bsy: cmd:x%x mb:x%x x%x",
(uint32_t)mb->mbxCommand,
mb->un.varWords[0], mb->un.varWords[1]);
}
return MBX_BUSY;
}
psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
/* If we are not polling, we MUST be in SLI2 mode */
if (flag != MBX_POLL) {
if (!(psli->sli_flag & LPFC_SLI_ACTIVE) &&
(mb->mbxCommand != MBX_KILL_BOARD)) {
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
/* Mbox command <mbxCommand> cannot issue */
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"(%d):2531 Mailbox command x%x "
"cannot issue Data: x%x x%x\n",
pmbox->vport ? pmbox->vport->vpi : 0,
pmbox->u.mb.mbxCommand,
psli->sli_flag, flag);
goto out_not_finished;
}
/* timeout active mbox command */
mod_timer(&psli->mbox_tmo, (jiffies +
(HZ * lpfc_mbox_tmo_val(phba, mb->mbxCommand))));
}
/* Mailbox cmd <cmd> issue */
lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
"(%d):0309 Mailbox cmd x%x issue Data: x%x x%x "
"x%x\n",
pmbox->vport ? pmbox->vport->vpi : 0,
mb->mbxCommand, phba->pport->port_state,
psli->sli_flag, flag);
if (mb->mbxCommand != MBX_HEARTBEAT) {
if (pmbox->vport) {
lpfc_debugfs_disc_trc(pmbox->vport,
LPFC_DISC_TRC_MBOX_VPORT,
"MBOX Send vport: cmd:x%x mb:x%x x%x",
(uint32_t)mb->mbxCommand,
mb->un.varWords[0], mb->un.varWords[1]);
}
else {
lpfc_debugfs_disc_trc(phba->pport,
LPFC_DISC_TRC_MBOX,
"MBOX Send: cmd:x%x mb:x%x x%x",
(uint32_t)mb->mbxCommand,
mb->un.varWords[0], mb->un.varWords[1]);
}
}
psli->slistat.mbox_cmd++;
evtctr = psli->slistat.mbox_event;
/* next set own bit for the adapter and copy over command word */
mb->mbxOwner = OWN_CHIP;
if (psli->sli_flag & LPFC_SLI_ACTIVE) {
/* First copy command data to host SLIM area */
lpfc_sli_pcimem_bcopy(mb, phba->mbox, MAILBOX_CMD_SIZE);
} else {
if (mb->mbxCommand == MBX_CONFIG_PORT) {
/* copy command data into host mbox for cmpl */
lpfc_sli_pcimem_bcopy(mb, phba->mbox, MAILBOX_CMD_SIZE);
}
/* First copy mbox command data to HBA SLIM, skip past first
word */
to_slim = phba->MBslimaddr + sizeof (uint32_t);
lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
MAILBOX_CMD_SIZE - sizeof (uint32_t));
/* Next copy over first word, with mbxOwner set */
ldata = *((uint32_t *)mb);
to_slim = phba->MBslimaddr;
writel(ldata, to_slim);
readl(to_slim); /* flush */
if (mb->mbxCommand == MBX_CONFIG_PORT) {
/* switch over to host mailbox */
psli->sli_flag |= LPFC_SLI_ACTIVE;
}
}
wmb();
switch (flag) {
case MBX_NOWAIT:
/* Set up reference to mailbox command */
psli->mbox_active = pmbox;
/* Interrupt board to do it */
writel(CA_MBATT, phba->CAregaddr);
readl(phba->CAregaddr); /* flush */
/* Don't wait for it to finish, just return */
break;
case MBX_POLL:
/* Set up null reference to mailbox command */
psli->mbox_active = NULL;
/* Interrupt board to do it */
writel(CA_MBATT, phba->CAregaddr);
readl(phba->CAregaddr); /* flush */
if (psli->sli_flag & LPFC_SLI_ACTIVE) {
/* First read mbox status word */
word0 = *((uint32_t *)phba->mbox);
word0 = le32_to_cpu(word0);
} else {
/* First read mbox status word */
word0 = readl(phba->MBslimaddr);
}
/* Read the HBA Host Attention Register */
ha_copy = readl(phba->HAregaddr);
timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
mb->mbxCommand) *
1000) + jiffies;
i = 0;
/* Wait for command to complete */
while (((word0 & OWN_CHIP) == OWN_CHIP) ||
(!(ha_copy & HA_MBATT) &&
(phba->link_state > LPFC_WARM_START))) {
if (time_after(jiffies, timeout)) {
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irqrestore(&phba->hbalock,
drvr_flag);
goto out_not_finished;
}
/* Check if we took a mbox interrupt while we were
polling */
if (((word0 & OWN_CHIP) != OWN_CHIP)
&& (evtctr != psli->slistat.mbox_event))
break;
if (i++ > 10) {
spin_unlock_irqrestore(&phba->hbalock,
drvr_flag);
msleep(1);
spin_lock_irqsave(&phba->hbalock, drvr_flag);
}
if (psli->sli_flag & LPFC_SLI_ACTIVE) {
/* First copy command data */
word0 = *((uint32_t *)phba->mbox);
word0 = le32_to_cpu(word0);
if (mb->mbxCommand == MBX_CONFIG_PORT) {
MAILBOX_t *slimmb;
uint32_t slimword0;
/* Check real SLIM for any errors */
slimword0 = readl(phba->MBslimaddr);
slimmb = (MAILBOX_t *) & slimword0;
if (((slimword0 & OWN_CHIP) != OWN_CHIP)
&& slimmb->mbxStatus) {
psli->sli_flag &=
~LPFC_SLI_ACTIVE;
word0 = slimword0;
}
}
} else {
/* First copy command data */
word0 = readl(phba->MBslimaddr);
}
/* Read the HBA Host Attention Register */
ha_copy = readl(phba->HAregaddr);
}
if (psli->sli_flag & LPFC_SLI_ACTIVE) {
/* copy results back to user */
lpfc_sli_pcimem_bcopy(phba->mbox, mb, MAILBOX_CMD_SIZE);
} else {
/* First copy command data */
lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
MAILBOX_CMD_SIZE);
if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
pmbox->context2) {
lpfc_memcpy_from_slim((void *)pmbox->context2,
phba->MBslimaddr + DMP_RSP_OFFSET,
mb->un.varDmp.word_cnt);
}
}
writel(HA_MBATT, phba->HAregaddr);
readl(phba->HAregaddr); /* flush */
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
status = mb->mbxStatus;
}
spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
return status;
out_not_finished:
if (processing_queue) {
pmbox->u.mb.mbxStatus = MBX_NOT_FINISHED;
lpfc_mbox_cmpl_put(phba, pmbox);
}
return MBX_NOT_FINISHED;
}
/**
* lpfc_sli4_async_mbox_block - Block posting SLI4 asynchronous mailbox command
* @phba: Pointer to HBA context object.
*
* The function blocks the posting of SLI4 asynchronous mailbox commands from
* the driver internal pending mailbox queue. It will then try to wait out the
* possible outstanding mailbox command before return.
*
* Returns:
* 0 - the outstanding mailbox command completed; otherwise, the wait for
* the outstanding mailbox command timed out.
**/
static int
lpfc_sli4_async_mbox_block(struct lpfc_hba *phba)
{
struct lpfc_sli *psli = &phba->sli;
uint8_t actcmd = MBX_HEARTBEAT;
int rc = 0;
unsigned long timeout;
/* Mark the asynchronous mailbox command posting as blocked */
spin_lock_irq(&phba->hbalock);
psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
if (phba->sli.mbox_active)
actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
spin_unlock_irq(&phba->hbalock);
/* Determine how long we might wait for the active mailbox
* command to be gracefully completed by firmware.
*/
timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) * 1000) +
jiffies;
/* Wait for the outstnading mailbox command to complete */
while (phba->sli.mbox_active) {
/* Check active mailbox complete status every 2ms */
msleep(2);
if (time_after(jiffies, timeout)) {
/* Timeout, marked the outstanding cmd not complete */
rc = 1;
break;
}
}
/* Can not cleanly block async mailbox command, fails it */
if (rc) {
spin_lock_irq(&phba->hbalock);
psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
spin_unlock_irq(&phba->hbalock);
}
return rc;
}
/**
* lpfc_sli4_async_mbox_unblock - Block posting SLI4 async mailbox command
* @phba: Pointer to HBA context object.
*
* The function unblocks and resume posting of SLI4 asynchronous mailbox
* commands from the driver internal pending mailbox queue. It makes sure
* that there is no outstanding mailbox command before resuming posting
* asynchronous mailbox commands. If, for any reason, there is outstanding
* mailbox command, it will try to wait it out before resuming asynchronous
* mailbox command posting.
**/
static void
lpfc_sli4_async_mbox_unblock(struct lpfc_hba *phba)
{
struct lpfc_sli *psli = &phba->sli;
spin_lock_irq(&phba->hbalock);
if (!(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
/* Asynchronous mailbox posting is not blocked, do nothing */
spin_unlock_irq(&phba->hbalock);
return;
}
/* Outstanding synchronous mailbox command is guaranteed to be done,
* successful or timeout, after timing-out the outstanding mailbox
* command shall always be removed, so just unblock posting async
* mailbox command and resume
*/
psli->sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
spin_unlock_irq(&phba->hbalock);
/* wake up worker thread to post asynchronlous mailbox command */
lpfc_worker_wake_up(phba);
}
/**
* lpfc_sli4_post_sync_mbox - Post an SLI4 mailbox to the bootstrap mailbox
* @phba: Pointer to HBA context object.
* @mboxq: Pointer to mailbox object.
*
* The function posts a mailbox to the port. The mailbox is expected
* to be comletely filled in and ready for the port to operate on it.
* This routine executes a synchronous completion operation on the
* mailbox by polling for its completion.
*
* The caller must not be holding any locks when calling this routine.
*
* Returns:
* MBX_SUCCESS - mailbox posted successfully
* Any of the MBX error values.
**/
static int
lpfc_sli4_post_sync_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
int rc = MBX_SUCCESS;
unsigned long iflag;
uint32_t db_ready;
uint32_t mcqe_status;
uint32_t mbx_cmnd;
unsigned long timeout;
struct lpfc_sli *psli = &phba->sli;
struct lpfc_mqe *mb = &mboxq->u.mqe;
struct lpfc_bmbx_create *mbox_rgn;
struct dma_address *dma_address;
struct lpfc_register bmbx_reg;
/*
* Only one mailbox can be active to the bootstrap mailbox region
* at a time and there is no queueing provided.
*/
spin_lock_irqsave(&phba->hbalock, iflag);
if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
spin_unlock_irqrestore(&phba->hbalock, iflag);
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"(%d):2532 Mailbox command x%x (x%x) "
"cannot issue Data: x%x x%x\n",
mboxq->vport ? mboxq->vport->vpi : 0,
mboxq->u.mb.mbxCommand,
lpfc_sli4_mbox_opcode_get(phba, mboxq),
psli->sli_flag, MBX_POLL);
return MBXERR_ERROR;
}
/* The server grabs the token and owns it until release */
psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
phba->sli.mbox_active = mboxq;
spin_unlock_irqrestore(&phba->hbalock, iflag);
/*
* Initialize the bootstrap memory region to avoid stale data areas
* in the mailbox post. Then copy the caller's mailbox contents to
* the bmbx mailbox region.
*/
mbx_cmnd = bf_get(lpfc_mqe_command, mb);
memset(phba->sli4_hba.bmbx.avirt, 0, sizeof(struct lpfc_bmbx_create));
lpfc_sli_pcimem_bcopy(mb, phba->sli4_hba.bmbx.avirt,
sizeof(struct lpfc_mqe));
/* Post the high mailbox dma address to the port and wait for ready. */
dma_address = &phba->sli4_hba.bmbx.dma_address;
writel(dma_address->addr_hi, phba->sli4_hba.BMBXregaddr);
timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mbx_cmnd)
* 1000) + jiffies;
do {
bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr);
db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg);
if (!db_ready)
msleep(2);
if (time_after(jiffies, timeout)) {
rc = MBXERR_ERROR;
goto exit;
}
} while (!db_ready);
/* Post the low mailbox dma address to the port. */
writel(dma_address->addr_lo, phba->sli4_hba.BMBXregaddr);
timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mbx_cmnd)
* 1000) + jiffies;
do {
bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr);
db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg);
if (!db_ready)
msleep(2);
if (time_after(jiffies, timeout)) {
rc = MBXERR_ERROR;
goto exit;
}
} while (!db_ready);
/*
* Read the CQ to ensure the mailbox has completed.
* If so, update the mailbox status so that the upper layers
* can complete the request normally.
*/
lpfc_sli_pcimem_bcopy(phba->sli4_hba.bmbx.avirt, mb,
sizeof(struct lpfc_mqe));
mbox_rgn = (struct lpfc_bmbx_create *) phba->sli4_hba.bmbx.avirt;
lpfc_sli_pcimem_bcopy(&mbox_rgn->mcqe, &mboxq->mcqe,
sizeof(struct lpfc_mcqe));
mcqe_status = bf_get(lpfc_mcqe_status, &mbox_rgn->mcqe);
/* Prefix the mailbox status with range x4000 to note SLI4 status. */
if (mcqe_status != MB_CQE_STATUS_SUCCESS) {
bf_set(lpfc_mqe_status, mb, LPFC_MBX_ERROR_RANGE | mcqe_status);
rc = MBXERR_ERROR;
}
lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
"(%d):0356 Mailbox cmd x%x (x%x) Status x%x "
"Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x"
" x%x x%x CQ: x%x x%x x%x x%x\n",
mboxq->vport ? mboxq->vport->vpi : 0,
mbx_cmnd, lpfc_sli4_mbox_opcode_get(phba, mboxq),
bf_get(lpfc_mqe_status, mb),
mb->un.mb_words[0], mb->un.mb_words[1],
mb->un.mb_words[2], mb->un.mb_words[3],
mb->un.mb_words[4], mb->un.mb_words[5],
mb->un.mb_words[6], mb->un.mb_words[7],
mb->un.mb_words[8], mb->un.mb_words[9],
mb->un.mb_words[10], mb->un.mb_words[11],
mb->un.mb_words[12], mboxq->mcqe.word0,
mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1,
mboxq->mcqe.trailer);
exit:
/* We are holding the token, no needed for lock when release */
spin_lock_irqsave(&phba->hbalock, iflag);
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
phba->sli.mbox_active = NULL;
spin_unlock_irqrestore(&phba->hbalock, iflag);
return rc;
}
/**
* lpfc_sli_issue_mbox_s4 - Issue an SLI4 mailbox command to firmware
* @phba: Pointer to HBA context object.
* @pmbox: Pointer to mailbox object.
* @flag: Flag indicating how the mailbox need to be processed.
*
* This function is called by discovery code and HBA management code to submit
* a mailbox command to firmware with SLI-4 interface spec.
*
* Return codes the caller owns the mailbox command after the return of the
* function.
**/
static int
lpfc_sli_issue_mbox_s4(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
uint32_t flag)
{
struct lpfc_sli *psli = &phba->sli;
unsigned long iflags;
int rc;
/* Detect polling mode and jump to a handler */
if (!phba->sli4_hba.intr_enable) {
if (flag == MBX_POLL)
rc = lpfc_sli4_post_sync_mbox(phba, mboxq);
else
rc = -EIO;
if (rc != MBX_SUCCESS)
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"(%d):2541 Mailbox command x%x "
"(x%x) cannot issue Data: x%x x%x\n",
mboxq->vport ? mboxq->vport->vpi : 0,
mboxq->u.mb.mbxCommand,
lpfc_sli4_mbox_opcode_get(phba, mboxq),
psli->sli_flag, flag);
return rc;
} else if (flag == MBX_POLL) {
lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
"(%d):2542 Try to issue mailbox command "
"x%x (x%x) synchronously ahead of async"
"mailbox command queue: x%x x%x\n",
mboxq->vport ? mboxq->vport->vpi : 0,
mboxq->u.mb.mbxCommand,
lpfc_sli4_mbox_opcode_get(phba, mboxq),
psli->sli_flag, flag);
/* Try to block the asynchronous mailbox posting */
rc = lpfc_sli4_async_mbox_block(phba);
if (!rc) {
/* Successfully blocked, now issue sync mbox cmd */
rc = lpfc_sli4_post_sync_mbox(phba, mboxq);
if (rc != MBX_SUCCESS)
lpfc_printf_log(phba, KERN_ERR,
LOG_MBOX | LOG_SLI,
"(%d):2597 Mailbox command "
"x%x (x%x) cannot issue "
"Data: x%x x%x\n",
mboxq->vport ?
mboxq->vport->vpi : 0,
mboxq->u.mb.mbxCommand,
lpfc_sli4_mbox_opcode_get(phba,
mboxq),
psli->sli_flag, flag);
/* Unblock the async mailbox posting afterward */
lpfc_sli4_async_mbox_unblock(phba);
}
return rc;
}
/* Now, interrupt mode asynchrous mailbox command */
rc = lpfc_mbox_cmd_check(phba, mboxq);
if (rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"(%d):2543 Mailbox command x%x (x%x) "
"cannot issue Data: x%x x%x\n",
mboxq->vport ? mboxq->vport->vpi : 0,
mboxq->u.mb.mbxCommand,
lpfc_sli4_mbox_opcode_get(phba, mboxq),
psli->sli_flag, flag);
goto out_not_finished;
}
rc = lpfc_mbox_dev_check(phba);
if (unlikely(rc)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"(%d):2544 Mailbox command x%x (x%x) "
"cannot issue Data: x%x x%x\n",
mboxq->vport ? mboxq->vport->vpi : 0,
mboxq->u.mb.mbxCommand,
lpfc_sli4_mbox_opcode_get(phba, mboxq),
psli->sli_flag, flag);
goto out_not_finished;
}
/* Put the mailbox command to the driver internal FIFO */
psli->slistat.mbox_busy++;
spin_lock_irqsave(&phba->hbalock, iflags);
lpfc_mbox_put(phba, mboxq);
spin_unlock_irqrestore(&phba->hbalock, iflags);
lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
"(%d):0354 Mbox cmd issue - Enqueue Data: "
"x%x (x%x) x%x x%x x%x\n",
mboxq->vport ? mboxq->vport->vpi : 0xffffff,
bf_get(lpfc_mqe_command, &mboxq->u.mqe),
lpfc_sli4_mbox_opcode_get(phba, mboxq),
phba->pport->port_state,
psli->sli_flag, MBX_NOWAIT);
/* Wake up worker thread to transport mailbox command from head */
lpfc_worker_wake_up(phba);
return MBX_BUSY;
out_not_finished:
return MBX_NOT_FINISHED;
}
/**
* lpfc_sli4_post_async_mbox - Post an SLI4 mailbox command to device
* @phba: Pointer to HBA context object.
*
* This function is called by worker thread to send a mailbox command to
* SLI4 HBA firmware.
*
**/
int
lpfc_sli4_post_async_mbox(struct lpfc_hba *phba)
{
struct lpfc_sli *psli = &phba->sli;
LPFC_MBOXQ_t *mboxq;
int rc = MBX_SUCCESS;
unsigned long iflags;
struct lpfc_mqe *mqe;
uint32_t mbx_cmnd;
/* Check interrupt mode before post async mailbox command */
if (unlikely(!phba->sli4_hba.intr_enable))
return MBX_NOT_FINISHED;
/* Check for mailbox command service token */
spin_lock_irqsave(&phba->hbalock, iflags);
if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
spin_unlock_irqrestore(&phba->hbalock, iflags);
return MBX_NOT_FINISHED;
}
if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
spin_unlock_irqrestore(&phba->hbalock, iflags);
return MBX_NOT_FINISHED;
}
if (unlikely(phba->sli.mbox_active)) {
spin_unlock_irqrestore(&phba->hbalock, iflags);
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"0384 There is pending active mailbox cmd\n");
return MBX_NOT_FINISHED;
}
/* Take the mailbox command service token */
psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
/* Get the next mailbox command from head of queue */
mboxq = lpfc_mbox_get(phba);
/* If no more mailbox command waiting for post, we're done */
if (!mboxq) {
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
spin_unlock_irqrestore(&phba->hbalock, iflags);
return MBX_SUCCESS;
}
phba->sli.mbox_active = mboxq;
spin_unlock_irqrestore(&phba->hbalock, iflags);
/* Check device readiness for posting mailbox command */
rc = lpfc_mbox_dev_check(phba);
if (unlikely(rc))
/* Driver clean routine will clean up pending mailbox */
goto out_not_finished;
/* Prepare the mbox command to be posted */
mqe = &mboxq->u.mqe;
mbx_cmnd = bf_get(lpfc_mqe_command, mqe);
/* Start timer for the mbox_tmo and log some mailbox post messages */
mod_timer(&psli->mbox_tmo, (jiffies +
(HZ * lpfc_mbox_tmo_val(phba, mbx_cmnd))));
lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
"(%d):0355 Mailbox cmd x%x (x%x) issue Data: "
"x%x x%x\n",
mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd,
lpfc_sli4_mbox_opcode_get(phba, mboxq),
phba->pport->port_state, psli->sli_flag);
if (mbx_cmnd != MBX_HEARTBEAT) {
if (mboxq->vport) {
lpfc_debugfs_disc_trc(mboxq->vport,
LPFC_DISC_TRC_MBOX_VPORT,
"MBOX Send vport: cmd:x%x mb:x%x x%x",
mbx_cmnd, mqe->un.mb_words[0],
mqe->un.mb_words[1]);
} else {
lpfc_debugfs_disc_trc(phba->pport,
LPFC_DISC_TRC_MBOX,
"MBOX Send: cmd:x%x mb:x%x x%x",
mbx_cmnd, mqe->un.mb_words[0],
mqe->un.mb_words[1]);
}
}
psli->slistat.mbox_cmd++;
/* Post the mailbox command to the port */
rc = lpfc_sli4_mq_put(phba->sli4_hba.mbx_wq, mqe);
if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
"(%d):2533 Mailbox command x%x (x%x) "
"cannot issue Data: x%x x%x\n",
mboxq->vport ? mboxq->vport->vpi : 0,
mboxq->u.mb.mbxCommand,
lpfc_sli4_mbox_opcode_get(phba, mboxq),
psli->sli_flag, MBX_NOWAIT);
goto out_not_finished;
}
return rc;
out_not_finished:
spin_lock_irqsave(&phba->hbalock, iflags);
mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
__lpfc_mbox_cmpl_put(phba, mboxq);
/* Release the token */
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
phba->sli.mbox_active = NULL;
spin_unlock_irqrestore(&phba->hbalock, iflags);
return MBX_NOT_FINISHED;
}
/**
* lpfc_sli_issue_mbox - Wrapper func for issuing mailbox command
* @phba: Pointer to HBA context object.
* @pmbox: Pointer to mailbox object.
* @flag: Flag indicating how the mailbox need to be processed.
*
* This routine wraps the actual SLI3 or SLI4 mailbox issuing routine from
* the API jump table function pointer from the lpfc_hba struct.
*
* Return codes the caller owns the mailbox command after the return of the
* function.
**/
int
lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
{
return phba->lpfc_sli_issue_mbox(phba, pmbox, flag);
}
/**
* lpfc_mbox_api_table_setup - Set up mbox api fucntion jump table
* @phba: The hba struct for which this call is being executed.
* @dev_grp: The HBA PCI-Device group number.
*
* This routine sets up the mbox interface API function jump table in @phba
* struct.
* Returns: 0 - success, -ENODEV - failure.
**/
int
lpfc_mbox_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
{
switch (dev_grp) {
case LPFC_PCI_DEV_LP:
phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s3;
phba->lpfc_sli_handle_slow_ring_event =
lpfc_sli_handle_slow_ring_event_s3;
phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s3;
phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s3;
phba->lpfc_sli_brdready = lpfc_sli_brdready_s3;
break;
case LPFC_PCI_DEV_OC:
phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s4;
phba->lpfc_sli_handle_slow_ring_event =
lpfc_sli_handle_slow_ring_event_s4;
phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s4;
phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s4;
phba->lpfc_sli_brdready = lpfc_sli_brdready_s4;
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"1420 Invalid HBA PCI-device group: 0x%x\n",
dev_grp);
return -ENODEV;
break;
}
return 0;
}
/**
* __lpfc_sli_ringtx_put - Add an iocb to the txq
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @piocb: Pointer to address of newly added command iocb.
*
* This function is called with hbalock held to add a command
* iocb to the txq when SLI layer cannot submit the command iocb
* to the ring.
**/
static void
__lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *piocb)
{
/* Insert the caller's iocb in the txq tail for later processing. */
list_add_tail(&piocb->list, &pring->txq);
pring->txq_cnt++;
}
/**
* lpfc_sli_next_iocb - Get the next iocb in the txq
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @piocb: Pointer to address of newly added command iocb.
*
* This function is called with hbalock held before a new
* iocb is submitted to the firmware. This function checks
* txq to flush the iocbs in txq to Firmware before
* submitting new iocbs to the Firmware.
* If there are iocbs in the txq which need to be submitted
* to firmware, lpfc_sli_next_iocb returns the first element
* of the txq after dequeuing it from txq.
* If there is no iocb in the txq then the function will return
* *piocb and *piocb is set to NULL. Caller needs to check
* *piocb to find if there are more commands in the txq.
**/
static struct lpfc_iocbq *
lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq **piocb)
{
struct lpfc_iocbq * nextiocb;
nextiocb = lpfc_sli_ringtx_get(phba, pring);
if (!nextiocb) {
nextiocb = *piocb;
*piocb = NULL;
}
return nextiocb;
}
/**
* __lpfc_sli_issue_iocb_s3 - SLI3 device lockless ver of lpfc_sli_issue_iocb
* @phba: Pointer to HBA context object.
* @ring_number: SLI ring number to issue iocb on.
* @piocb: Pointer to command iocb.
* @flag: Flag indicating if this command can be put into txq.
*
* __lpfc_sli_issue_iocb_s3 is used by other functions in the driver to issue
* an iocb command to an HBA with SLI-3 interface spec. If the PCI slot is
* recovering from error state, if HBA is resetting or if LPFC_STOP_IOCB_EVENT
* flag is turned on, the function returns IOCB_ERROR. When the link is down,
* this function allows only iocbs for posting buffers. This function finds
* next available slot in the command ring and posts the command to the
* available slot and writes the port attention register to request HBA start
* processing new iocb. If there is no slot available in the ring and
* flag & SLI_IOCB_RET_IOCB is set, the new iocb is added to the txq, otherwise
* the function returns IOCB_BUSY.
*
* This function is called with hbalock held. The function will return success
* after it successfully submit the iocb to firmware or after adding to the
* txq.
**/
static int
__lpfc_sli_issue_iocb_s3(struct lpfc_hba *phba, uint32_t ring_number,
struct lpfc_iocbq *piocb, uint32_t flag)
{
struct lpfc_iocbq *nextiocb;
IOCB_t *iocb;
struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number];
if (piocb->iocb_cmpl && (!piocb->vport) &&
(piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
(piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
lpfc_printf_log(phba, KERN_ERR,
LOG_SLI | LOG_VPORT,
"1807 IOCB x%x failed. No vport\n",
piocb->iocb.ulpCommand);
dump_stack();
return IOCB_ERROR;
}
/* If the PCI channel is in offline state, do not post iocbs. */
if (unlikely(pci_channel_offline(phba->pcidev)))
return IOCB_ERROR;
/* If HBA has a deferred error attention, fail the iocb. */
if (unlikely(phba->hba_flag & DEFER_ERATT))
return IOCB_ERROR;
/*
* We should never get an IOCB if we are in a < LINK_DOWN state
*/
if (unlikely(phba->link_state < LPFC_LINK_DOWN))
return IOCB_ERROR;
/*
* Check to see if we are blocking IOCB processing because of a
* outstanding event.
*/
if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT))
goto iocb_busy;
if (unlikely(phba->link_state == LPFC_LINK_DOWN)) {
/*
* Only CREATE_XRI, CLOSE_XRI, and QUE_RING_BUF
* can be issued if the link is not up.
*/
switch (piocb->iocb.ulpCommand) {
case CMD_GEN_REQUEST64_CR:
case CMD_GEN_REQUEST64_CX:
if (!(phba->sli.sli_flag & LPFC_MENLO_MAINT) ||
(piocb->iocb.un.genreq64.w5.hcsw.Rctl !=
FC_FCP_CMND) ||
(piocb->iocb.un.genreq64.w5.hcsw.Type !=
MENLO_TRANSPORT_TYPE))
goto iocb_busy;
break;
case CMD_QUE_RING_BUF_CN:
case CMD_QUE_RING_BUF64_CN:
/*
* For IOCBs, like QUE_RING_BUF, that have no rsp ring
* completion, iocb_cmpl MUST be 0.
*/
if (piocb->iocb_cmpl)
piocb->iocb_cmpl = NULL;
/*FALLTHROUGH*/
case CMD_CREATE_XRI_CR:
case CMD_CLOSE_XRI_CN:
case CMD_CLOSE_XRI_CX:
break;
default:
goto iocb_busy;
}
/*
* For FCP commands, we must be in a state where we can process link
* attention events.
*/
} else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
!(phba->sli.sli_flag & LPFC_PROCESS_LA))) {
goto iocb_busy;
}
while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
(nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
if (iocb)
lpfc_sli_update_ring(phba, pring);
else
lpfc_sli_update_full_ring(phba, pring);
if (!piocb)
return IOCB_SUCCESS;
goto out_busy;
iocb_busy:
pring->stats.iocb_cmd_delay++;
out_busy:
if (!(flag & SLI_IOCB_RET_IOCB)) {
__lpfc_sli_ringtx_put(phba, pring, piocb);
return IOCB_SUCCESS;
}
return IOCB_BUSY;
}
/**
* lpfc_sli4_bpl2sgl - Convert the bpl/bde to a sgl.
* @phba: Pointer to HBA context object.
* @piocb: Pointer to command iocb.
* @sglq: Pointer to the scatter gather queue object.
*
* This routine converts the bpl or bde that is in the IOCB
* to a sgl list for the sli4 hardware. The physical address
* of the bpl/bde is converted back to a virtual address.
* If the IOCB contains a BPL then the list of BDE's is
* converted to sli4_sge's. If the IOCB contains a single
* BDE then it is converted to a single sli_sge.
* The IOCB is still in cpu endianess so the contents of
* the bpl can be used without byte swapping.
*
* Returns valid XRI = Success, NO_XRI = Failure.
**/
static uint16_t
lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
struct lpfc_sglq *sglq)
{
uint16_t xritag = NO_XRI;
struct ulp_bde64 *bpl = NULL;
struct ulp_bde64 bde;
struct sli4_sge *sgl = NULL;
IOCB_t *icmd;
int numBdes = 0;
int i = 0;
if (!piocbq || !sglq)
return xritag;
sgl = (struct sli4_sge *)sglq->sgl;
icmd = &piocbq->iocb;
if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) {
numBdes = icmd->un.genreq64.bdl.bdeSize /
sizeof(struct ulp_bde64);
/* The addrHigh and addrLow fields within the IOCB
* have not been byteswapped yet so there is no
* need to swap them back.
*/
bpl = (struct ulp_bde64 *)
((struct lpfc_dmabuf *)piocbq->context3)->virt;
if (!bpl)
return xritag;
for (i = 0; i < numBdes; i++) {
/* Should already be byte swapped. */
sgl->addr_hi = bpl->addrHigh;
sgl->addr_lo = bpl->addrLow;
/* swap the size field back to the cpu so we
* can assign it to the sgl.
*/
bde.tus.w = le32_to_cpu(bpl->tus.w);
bf_set(lpfc_sli4_sge_len, sgl, bde.tus.f.bdeSize);
if ((i+1) == numBdes)
bf_set(lpfc_sli4_sge_last, sgl, 1);
else
bf_set(lpfc_sli4_sge_last, sgl, 0);
sgl->word2 = cpu_to_le32(sgl->word2);
sgl->word3 = cpu_to_le32(sgl->word3);
bpl++;
sgl++;
}
} else if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BDE_64) {
/* The addrHigh and addrLow fields of the BDE have not
* been byteswapped yet so they need to be swapped
* before putting them in the sgl.
*/
sgl->addr_hi =
cpu_to_le32(icmd->un.genreq64.bdl.addrHigh);
sgl->addr_lo =
cpu_to_le32(icmd->un.genreq64.bdl.addrLow);
bf_set(lpfc_sli4_sge_len, sgl,
icmd->un.genreq64.bdl.bdeSize);
bf_set(lpfc_sli4_sge_last, sgl, 1);
sgl->word2 = cpu_to_le32(sgl->word2);
sgl->word3 = cpu_to_le32(sgl->word3);
}
return sglq->sli4_xritag;
}
/**
* lpfc_sli4_scmd_to_wqidx_distr - scsi command to SLI4 WQ index distribution
* @phba: Pointer to HBA context object.
* @piocb: Pointer to command iocb.
*
* This routine performs a round robin SCSI command to SLI4 FCP WQ index
* distribution.
*
* Return: index into SLI4 fast-path FCP queue index.
**/
static uint32_t
lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba, struct lpfc_iocbq *piocb)
{
static uint32_t fcp_qidx;
return fcp_qidx++ % phba->cfg_fcp_wq_count;
}
/**
* lpfc_sli_iocb2wqe - Convert the IOCB to a work queue entry.
* @phba: Pointer to HBA context object.
* @piocb: Pointer to command iocb.
* @wqe: Pointer to the work queue entry.
*
* This routine converts the iocb command to its Work Queue Entry
* equivalent. The wqe pointer should not have any fields set when
* this routine is called because it will memcpy over them.
* This routine does not set the CQ_ID or the WQEC bits in the
* wqe.
*
* Returns: 0 = Success, IOCB_ERROR = Failure.
**/
static int
lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
union lpfc_wqe *wqe)
{
uint32_t payload_len = 0;
uint8_t ct = 0;
uint32_t fip;
uint32_t abort_tag;
uint8_t command_type = ELS_COMMAND_NON_FIP;
uint8_t cmnd;
uint16_t xritag;
struct ulp_bde64 *bpl = NULL;
fip = bf_get(lpfc_fip_flag, &phba->sli4_hba.sli4_flags);
/* The fcp commands will set command type */
if (iocbq->iocb_flag & LPFC_IO_FCP)
command_type = FCP_COMMAND;
else if (fip && (iocbq->iocb_flag & LPFC_FIP_ELS))
command_type = ELS_COMMAND_FIP;
else
command_type = ELS_COMMAND_NON_FIP;
/* Some of the fields are in the right position already */
memcpy(wqe, &iocbq->iocb, sizeof(union lpfc_wqe));
abort_tag = (uint32_t) iocbq->iotag;
xritag = iocbq->sli4_xritag;
wqe->words[7] = 0; /* The ct field has moved so reset */
/* words0-2 bpl convert bde */
if (iocbq->iocb.un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) {
bpl = (struct ulp_bde64 *)
((struct lpfc_dmabuf *)iocbq->context3)->virt;
if (!bpl)
return IOCB_ERROR;
/* Should already be byte swapped. */
wqe->generic.bde.addrHigh = le32_to_cpu(bpl->addrHigh);
wqe->generic.bde.addrLow = le32_to_cpu(bpl->addrLow);
/* swap the size field back to the cpu so we
* can assign it to the sgl.
*/
wqe->generic.bde.tus.w = le32_to_cpu(bpl->tus.w);
payload_len = wqe->generic.bde.tus.f.bdeSize;
} else
payload_len = iocbq->iocb.un.fcpi64.bdl.bdeSize;
iocbq->iocb.ulpIoTag = iocbq->iotag;
cmnd = iocbq->iocb.ulpCommand;
switch (iocbq->iocb.ulpCommand) {
case CMD_ELS_REQUEST64_CR:
if (!iocbq->iocb.ulpLe) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2007 Only Limited Edition cmd Format"
" supported 0x%x\n",
iocbq->iocb.ulpCommand);
return IOCB_ERROR;
}
wqe->els_req.payload_len = payload_len;
/* Els_reguest64 has a TMO */
bf_set(wqe_tmo, &wqe->els_req.wqe_com,
iocbq->iocb.ulpTimeout);
/* Need a VF for word 4 set the vf bit*/
bf_set(els_req64_vf, &wqe->els_req, 0);
/* And a VFID for word 12 */
bf_set(els_req64_vfid, &wqe->els_req, 0);
/*
* Set ct field to 3, indicates that the context_tag field
* contains the FCFI and remote N_Port_ID is
* in word 5.
*/
ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l);
bf_set(lpfc_wqe_gen_context, &wqe->generic,
iocbq->iocb.ulpContext);
bf_set(lpfc_wqe_gen_ct, &wqe->generic, ct);
bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0);
/* CCP CCPE PV PRI in word10 were set in the memcpy */
break;
case CMD_XMIT_SEQUENCE64_CR:
/* word3 iocb=io_tag32 wqe=payload_offset */
/* payload offset used for multilpe outstanding
* sequences on the same exchange
*/
wqe->words[3] = 0;
/* word4 relative_offset memcpy */
/* word5 r_ctl/df_ctl memcpy */
bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0);
wqe->xmit_sequence.xmit_len = payload_len;
break;
case CMD_XMIT_BCAST64_CN:
/* word3 iocb=iotag32 wqe=payload_len */
wqe->words[3] = 0; /* no definition for this in wqe */
/* word4 iocb=rsvd wqe=rsvd */
/* word5 iocb=rctl/type/df_ctl wqe=rctl/type/df_ctl memcpy */
/* word6 iocb=ctxt_tag/io_tag wqe=ctxt_tag/xri */
bf_set(lpfc_wqe_gen_ct, &wqe->generic,
((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
break;
case CMD_FCP_IWRITE64_CR:
command_type = FCP_COMMAND_DATA_OUT;
/* The struct for wqe fcp_iwrite has 3 fields that are somewhat
* confusing.
* word3 is payload_len: byte offset to the sgl entry for the
* fcp_command.
* word4 is total xfer len, same as the IOCB->ulpParameter.
* word5 is initial xfer len 0 = wait for xfer-ready
*/
/* Always wait for xfer-ready before sending data */
wqe->fcp_iwrite.initial_xfer_len = 0;
/* word 4 (xfer length) should have been set on the memcpy */
/* allow write to fall through to read */
case CMD_FCP_IREAD64_CR:
/* FCP_CMD is always the 1st sgl entry */
wqe->fcp_iread.payload_len =
payload_len + sizeof(struct fcp_rsp);
/* word 4 (xfer length) should have been set on the memcpy */
bf_set(lpfc_wqe_gen_erp, &wqe->generic,
iocbq->iocb.ulpFCP2Rcvy);
bf_set(lpfc_wqe_gen_lnk, &wqe->generic, iocbq->iocb.ulpXS);
/* The XC bit and the XS bit are similar. The driver never
* tracked whether or not the exchange was previouslly open.
* XC = Exchange create, 0 is create. 1 is already open.
* XS = link cmd: 1 do not close the exchange after command.
* XS = 0 close exchange when command completes.
* The only time we would not set the XC bit is when the XS bit
* is set and we are sending our 2nd or greater command on
* this exchange.
*/
/* Always open the exchange */
bf_set(wqe_xc, &wqe->fcp_iread.wqe_com, 0);
wqe->words[10] &= 0xffff0000; /* zero out ebde count */
bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU);
break;
case CMD_FCP_ICMND64_CR:
/* Always open the exchange */
bf_set(wqe_xc, &wqe->fcp_iread.wqe_com, 0);
wqe->words[4] = 0;
wqe->words[10] &= 0xffff0000; /* zero out ebde count */
bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0);
break;
case CMD_GEN_REQUEST64_CR:
/* word3 command length is described as byte offset to the
* rsp_data. Would always be 16, sizeof(struct sli4_sge)
* sgl[0] = cmnd
* sgl[1] = rsp.
*
*/
wqe->gen_req.command_len = payload_len;
/* Word4 parameter copied in the memcpy */
/* Word5 [rctl, type, df_ctl, la] copied in memcpy */
/* word6 context tag copied in memcpy */
if (iocbq->iocb.ulpCt_h || iocbq->iocb.ulpCt_l) {
ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l);
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2015 Invalid CT %x command 0x%x\n",
ct, iocbq->iocb.ulpCommand);
return IOCB_ERROR;
}
bf_set(lpfc_wqe_gen_ct, &wqe->generic, 0);
bf_set(wqe_tmo, &wqe->gen_req.wqe_com,
iocbq->iocb.ulpTimeout);
bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU);
command_type = OTHER_COMMAND;
break;
case CMD_XMIT_ELS_RSP64_CX:
/* words0-2 BDE memcpy */
/* word3 iocb=iotag32 wqe=rsvd */
wqe->words[3] = 0;
/* word4 iocb=did wge=rsvd. */
wqe->words[4] = 0;
/* word5 iocb=rsvd wge=did */
bf_set(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest,
iocbq->iocb.un.elsreq64.remoteID);
bf_set(lpfc_wqe_gen_ct, &wqe->generic,
((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU);
bf_set(wqe_rcvoxid, &wqe->generic, iocbq->iocb.ulpContext);
if (!iocbq->iocb.ulpCt_h && iocbq->iocb.ulpCt_l)
bf_set(lpfc_wqe_gen_context, &wqe->generic,
iocbq->vport->vpi + phba->vpi_base);
command_type = OTHER_COMMAND;
break;
case CMD_CLOSE_XRI_CN:
case CMD_ABORT_XRI_CN:
case CMD_ABORT_XRI_CX:
/* words 0-2 memcpy should be 0 rserved */
/* port will send abts */
if (iocbq->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
/*
* The link is down so the fw does not need to send abts
* on the wire.
*/
bf_set(abort_cmd_ia, &wqe->abort_cmd, 1);
else
bf_set(abort_cmd_ia, &wqe->abort_cmd, 0);
bf_set(abort_cmd_criteria, &wqe->abort_cmd, T_XRI_TAG);
abort_tag = iocbq->iocb.un.acxri.abortIoTag;
wqe->words[5] = 0;
bf_set(lpfc_wqe_gen_ct, &wqe->generic,
((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
abort_tag = iocbq->iocb.un.acxri.abortIoTag;
wqe->generic.abort_tag = abort_tag;
/*
* The abort handler will send us CMD_ABORT_XRI_CN or
* CMD_CLOSE_XRI_CN and the fw only accepts CMD_ABORT_XRI_CX
*/
bf_set(lpfc_wqe_gen_command, &wqe->generic, CMD_ABORT_XRI_CX);
cmnd = CMD_ABORT_XRI_CX;
command_type = OTHER_COMMAND;
xritag = 0;
break;
case CMD_XRI_ABORTED_CX:
case CMD_CREATE_XRI_CR: /* Do we expect to use this? */
/* words0-2 are all 0's no bde */
/* word3 and word4 are rsvrd */
wqe->words[3] = 0;
wqe->words[4] = 0;
/* word5 iocb=rsvd wge=did */
/* There is no remote port id in the IOCB? */
/* Let this fall through and fail */
case CMD_IOCB_FCP_IBIDIR64_CR: /* bidirectional xfer */
case CMD_FCP_TSEND64_CX: /* Target mode send xfer-ready */
case CMD_FCP_TRSP64_CX: /* Target mode rcv */
case CMD_FCP_AUTO_TRSP_CX: /* Auto target rsp */
default:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2014 Invalid command 0x%x\n",
iocbq->iocb.ulpCommand);
return IOCB_ERROR;
break;
}
bf_set(lpfc_wqe_gen_xri, &wqe->generic, xritag);
bf_set(lpfc_wqe_gen_request_tag, &wqe->generic, iocbq->iotag);
wqe->generic.abort_tag = abort_tag;
bf_set(lpfc_wqe_gen_cmd_type, &wqe->generic, command_type);
bf_set(lpfc_wqe_gen_command, &wqe->generic, cmnd);
bf_set(lpfc_wqe_gen_class, &wqe->generic, iocbq->iocb.ulpClass);
bf_set(lpfc_wqe_gen_cq_id, &wqe->generic, LPFC_WQE_CQ_ID_DEFAULT);
return 0;
}
/**
* __lpfc_sli_issue_iocb_s4 - SLI4 device lockless ver of lpfc_sli_issue_iocb
* @phba: Pointer to HBA context object.
* @ring_number: SLI ring number to issue iocb on.
* @piocb: Pointer to command iocb.
* @flag: Flag indicating if this command can be put into txq.
*
* __lpfc_sli_issue_iocb_s4 is used by other functions in the driver to issue
* an iocb command to an HBA with SLI-4 interface spec.
*
* This function is called with hbalock held. The function will return success
* after it successfully submit the iocb to firmware or after adding to the
* txq.
**/
static int
__lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number,
struct lpfc_iocbq *piocb, uint32_t flag)
{
struct lpfc_sglq *sglq;
uint16_t xritag;
union lpfc_wqe wqe;
struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number];
uint32_t fcp_wqidx;
if (piocb->sli4_xritag == NO_XRI) {
if (piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
sglq = NULL;
else {
sglq = __lpfc_sli_get_sglq(phba);
if (!sglq)
return IOCB_ERROR;
piocb->sli4_xritag = sglq->sli4_xritag;
}
} else if (piocb->iocb_flag & LPFC_IO_FCP) {
sglq = NULL; /* These IO's already have an XRI and
* a mapped sgl.
*/
} else {
/* This is a continuation of a commandi,(CX) so this
* sglq is on the active list
*/
sglq = __lpfc_get_active_sglq(phba, piocb->sli4_xritag);
if (!sglq)
return IOCB_ERROR;
}
if (sglq) {
xritag = lpfc_sli4_bpl2sgl(phba, piocb, sglq);
if (xritag != sglq->sli4_xritag)
return IOCB_ERROR;
}
if (lpfc_sli4_iocb2wqe(phba, piocb, &wqe))
return IOCB_ERROR;
if (piocb->iocb_flag & LPFC_IO_FCP) {
fcp_wqidx = lpfc_sli4_scmd_to_wqidx_distr(phba, piocb);
if (lpfc_sli4_wq_put(phba->sli4_hba.fcp_wq[fcp_wqidx], &wqe))
return IOCB_ERROR;
} else {
if (lpfc_sli4_wq_put(phba->sli4_hba.els_wq, &wqe))
return IOCB_ERROR;
}
lpfc_sli_ringtxcmpl_put(phba, pring, piocb);
return 0;
}
/**
* __lpfc_sli_issue_iocb - Wrapper func of lockless version for issuing iocb
*
* This routine wraps the actual lockless version for issusing IOCB function
* pointer from the lpfc_hba struct.
*
* Return codes:
* IOCB_ERROR - Error
* IOCB_SUCCESS - Success
* IOCB_BUSY - Busy
**/
static inline int
__lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number,
struct lpfc_iocbq *piocb, uint32_t flag)
{
return phba->__lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
}
/**
* lpfc_sli_api_table_setup - Set up sli api fucntion jump table
* @phba: The hba struct for which this call is being executed.
* @dev_grp: The HBA PCI-Device group number.
*
* This routine sets up the SLI interface API function jump table in @phba
* struct.
* Returns: 0 - success, -ENODEV - failure.
**/
int
lpfc_sli_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
{
switch (dev_grp) {
case LPFC_PCI_DEV_LP:
phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s3;
phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s3;
break;
case LPFC_PCI_DEV_OC:
phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s4;
phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s4;
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"1419 Invalid HBA PCI-device group: 0x%x\n",
dev_grp);
return -ENODEV;
break;
}
phba->lpfc_get_iocb_from_iocbq = lpfc_get_iocb_from_iocbq;
return 0;
}
/**
* lpfc_sli_issue_iocb - Wrapper function for __lpfc_sli_issue_iocb
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @piocb: Pointer to command iocb.
* @flag: Flag indicating if this command can be put into txq.
*
* lpfc_sli_issue_iocb is a wrapper around __lpfc_sli_issue_iocb
* function. This function gets the hbalock and calls
* __lpfc_sli_issue_iocb function and will return the error returned
* by __lpfc_sli_issue_iocb function. This wrapper is used by
* functions which do not hold hbalock.
**/
int
lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number,
struct lpfc_iocbq *piocb, uint32_t flag)
{
unsigned long iflags;
int rc;
spin_lock_irqsave(&phba->hbalock, iflags);
rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
spin_unlock_irqrestore(&phba->hbalock, iflags);
return rc;
}
/**
* lpfc_extra_ring_setup - Extra ring setup function
* @phba: Pointer to HBA context object.
*
* This function is called while driver attaches with the
* HBA to setup the extra ring. The extra ring is used
* only when driver needs to support target mode functionality
* or IP over FC functionalities.
*
* This function is called with no lock held.
**/
static int
lpfc_extra_ring_setup( struct lpfc_hba *phba)
{
struct lpfc_sli *psli;
struct lpfc_sli_ring *pring;
psli = &phba->sli;
/* Adjust cmd/rsp ring iocb entries more evenly */
/* Take some away from the FCP ring */
pring = &psli->ring[psli->fcp_ring];
pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
/* and give them to the extra ring */
pring = &psli->ring[psli->extra_ring];
pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
/* Setup default profile for this ring */
pring->iotag_max = 4096;
pring->num_mask = 1;
pring->prt[0].profile = 0; /* Mask 0 */
pring->prt[0].rctl = phba->cfg_multi_ring_rctl;
pring->prt[0].type = phba->cfg_multi_ring_type;
pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
return 0;
}
/**
* lpfc_sli_async_event_handler - ASYNC iocb handler function
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @iocbq: Pointer to iocb object.
*
* This function is called by the slow ring event handler
* function when there is an ASYNC event iocb in the ring.
* This function is called with no lock held.
* Currently this function handles only temperature related
* ASYNC events. The function decodes the temperature sensor
* event message and posts events for the management applications.
**/
static void
lpfc_sli_async_event_handler(struct lpfc_hba * phba,
struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq)
{
IOCB_t *icmd;
uint16_t evt_code;
uint16_t temp;
struct temp_event temp_event_data;
struct Scsi_Host *shost;
uint32_t *iocb_w;
icmd = &iocbq->iocb;
evt_code = icmd->un.asyncstat.evt_code;
temp = icmd->ulpContext;
if ((evt_code != ASYNC_TEMP_WARN) &&
(evt_code != ASYNC_TEMP_SAFE)) {
iocb_w = (uint32_t *) icmd;
lpfc_printf_log(phba,
KERN_ERR,
LOG_SLI,
"0346 Ring %d handler: unexpected ASYNC_STATUS"
" evt_code 0x%x \n"
"W0 0x%08x W1 0x%08x W2 0x%08x W3 0x%08x\n"
"W4 0x%08x W5 0x%08x W6 0x%08x W7 0x%08x\n"
"W8 0x%08x W9 0x%08x W10 0x%08x W11 0x%08x\n"
"W12 0x%08x W13 0x%08x W14 0x%08x W15 0x%08x\n",
pring->ringno,
icmd->un.asyncstat.evt_code,
iocb_w[0], iocb_w[1], iocb_w[2], iocb_w[3],
iocb_w[4], iocb_w[5], iocb_w[6], iocb_w[7],
iocb_w[8], iocb_w[9], iocb_w[10], iocb_w[11],
iocb_w[12], iocb_w[13], iocb_w[14], iocb_w[15]);
return;
}
temp_event_data.data = (uint32_t)temp;
temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
if (evt_code == ASYNC_TEMP_WARN) {
temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
lpfc_printf_log(phba,
KERN_ERR,
LOG_TEMP,
"0347 Adapter is very hot, please take "
"corrective action. temperature : %d Celsius\n",
temp);
}
if (evt_code == ASYNC_TEMP_SAFE) {
temp_event_data.event_code = LPFC_NORMAL_TEMP;
lpfc_printf_log(phba,
KERN_ERR,
LOG_TEMP,
"0340 Adapter temperature is OK now. "
"temperature : %d Celsius\n",
temp);
}
/* Send temperature change event to applications */
shost = lpfc_shost_from_vport(phba->pport);
fc_host_post_vendor_event(shost, fc_get_event_number(),
sizeof(temp_event_data), (char *) &temp_event_data,
LPFC_NL_VENDOR_ID);
}
/**
* lpfc_sli_setup - SLI ring setup function
* @phba: Pointer to HBA context object.
*
* lpfc_sli_setup sets up rings of the SLI interface with
* number of iocbs per ring and iotags. This function is
* called while driver attach to the HBA and before the
* interrupts are enabled. So there is no need for locking.
*
* This function always returns 0.
**/
int
lpfc_sli_setup(struct lpfc_hba *phba)
{
int i, totiocbsize = 0;
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring;
psli->num_rings = MAX_CONFIGURED_RINGS;
psli->sli_flag = 0;
psli->fcp_ring = LPFC_FCP_RING;
psli->next_ring = LPFC_FCP_NEXT_RING;
psli->extra_ring = LPFC_EXTRA_RING;
psli->iocbq_lookup = NULL;
psli->iocbq_lookup_len = 0;
psli->last_iotag = 0;
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
switch (i) {
case LPFC_FCP_RING: /* ring 0 - FCP */
/* numCiocb and numRiocb are used in config_port */
pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
pring->sizeCiocb = (phba->sli_rev == 3) ?
SLI3_IOCB_CMD_SIZE :
SLI2_IOCB_CMD_SIZE;
pring->sizeRiocb = (phba->sli_rev == 3) ?
SLI3_IOCB_RSP_SIZE :
SLI2_IOCB_RSP_SIZE;
pring->iotag_ctr = 0;
pring->iotag_max =
(phba->cfg_hba_queue_depth * 2);
pring->fast_iotag = pring->iotag_max;
pring->num_mask = 0;
break;
case LPFC_EXTRA_RING: /* ring 1 - EXTRA */
/* numCiocb and numRiocb are used in config_port */
pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
pring->sizeCiocb = (phba->sli_rev == 3) ?
SLI3_IOCB_CMD_SIZE :
SLI2_IOCB_CMD_SIZE;
pring->sizeRiocb = (phba->sli_rev == 3) ?
SLI3_IOCB_RSP_SIZE :
SLI2_IOCB_RSP_SIZE;
pring->iotag_max = phba->cfg_hba_queue_depth;
pring->num_mask = 0;
break;
case LPFC_ELS_RING: /* ring 2 - ELS / CT */
/* numCiocb and numRiocb are used in config_port */
pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
pring->sizeCiocb = (phba->sli_rev == 3) ?
SLI3_IOCB_CMD_SIZE :
SLI2_IOCB_CMD_SIZE;
pring->sizeRiocb = (phba->sli_rev == 3) ?
SLI3_IOCB_RSP_SIZE :
SLI2_IOCB_RSP_SIZE;
pring->fast_iotag = 0;
pring->iotag_ctr = 0;
pring->iotag_max = 4096;
pring->lpfc_sli_rcv_async_status =
lpfc_sli_async_event_handler;
pring->num_mask = 4;
pring->prt[0].profile = 0; /* Mask 0 */
pring->prt[0].rctl = FC_ELS_REQ;
pring->prt[0].type = FC_ELS_DATA;
pring->prt[0].lpfc_sli_rcv_unsol_event =
lpfc_els_unsol_event;
pring->prt[1].profile = 0; /* Mask 1 */
pring->prt[1].rctl = FC_ELS_RSP;
pring->prt[1].type = FC_ELS_DATA;
pring->prt[1].lpfc_sli_rcv_unsol_event =
lpfc_els_unsol_event;
pring->prt[2].profile = 0; /* Mask 2 */
/* NameServer Inquiry */
pring->prt[2].rctl = FC_UNSOL_CTL;
/* NameServer */
pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
pring->prt[2].lpfc_sli_rcv_unsol_event =
lpfc_ct_unsol_event;
pring->prt[3].profile = 0; /* Mask 3 */
/* NameServer response */
pring->prt[3].rctl = FC_SOL_CTL;
/* NameServer */
pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
pring->prt[3].lpfc_sli_rcv_unsol_event =
lpfc_ct_unsol_event;
break;
}
totiocbsize += (pring->numCiocb * pring->sizeCiocb) +
(pring->numRiocb * pring->sizeRiocb);
}
if (totiocbsize > MAX_SLIM_IOCB_SIZE) {
/* Too many cmd / rsp ring entries in SLI2 SLIM */
printk(KERN_ERR "%d:0462 Too many cmd / rsp ring entries in "
"SLI2 SLIM Data: x%x x%lx\n",
phba->brd_no, totiocbsize,
(unsigned long) MAX_SLIM_IOCB_SIZE);
}
if (phba->cfg_multi_ring_support == 2)
lpfc_extra_ring_setup(phba);
return 0;
}
/**
* lpfc_sli_queue_setup - Queue initialization function
* @phba: Pointer to HBA context object.
*
* lpfc_sli_queue_setup sets up mailbox queues and iocb queues for each
* ring. This function also initializes ring indices of each ring.
* This function is called during the initialization of the SLI
* interface of an HBA.
* This function is called with no lock held and always returns
* 1.
**/
int
lpfc_sli_queue_setup(struct lpfc_hba *phba)
{
struct lpfc_sli *psli;
struct lpfc_sli_ring *pring;
int i;
psli = &phba->sli;
spin_lock_irq(&phba->hbalock);
INIT_LIST_HEAD(&psli->mboxq);
INIT_LIST_HEAD(&psli->mboxq_cmpl);
/* Initialize list headers for txq and txcmplq as double linked lists */
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
pring->ringno = i;
pring->next_cmdidx = 0;
pring->local_getidx = 0;
pring->cmdidx = 0;
INIT_LIST_HEAD(&pring->txq);
INIT_LIST_HEAD(&pring->txcmplq);
INIT_LIST_HEAD(&pring->iocb_continueq);
INIT_LIST_HEAD(&pring->iocb_continue_saveq);
INIT_LIST_HEAD(&pring->postbufq);
}
spin_unlock_irq(&phba->hbalock);
return 1;
}
/**
* lpfc_sli_mbox_sys_flush - Flush mailbox command sub-system
* @phba: Pointer to HBA context object.
*
* This routine flushes the mailbox command subsystem. It will unconditionally
* flush all the mailbox commands in the three possible stages in the mailbox
* command sub-system: pending mailbox command queue; the outstanding mailbox
* command; and completed mailbox command queue. It is caller's responsibility
* to make sure that the driver is in the proper state to flush the mailbox
* command sub-system. Namely, the posting of mailbox commands into the
* pending mailbox command queue from the various clients must be stopped;
* either the HBA is in a state that it will never works on the outstanding
* mailbox command (such as in EEH or ERATT conditions) or the outstanding
* mailbox command has been completed.
**/
static void
lpfc_sli_mbox_sys_flush(struct lpfc_hba *phba)
{
LIST_HEAD(completions);
struct lpfc_sli *psli = &phba->sli;
LPFC_MBOXQ_t *pmb;
unsigned long iflag;
/* Flush all the mailbox commands in the mbox system */
spin_lock_irqsave(&phba->hbalock, iflag);
/* The pending mailbox command queue */
list_splice_init(&phba->sli.mboxq, &completions);
/* The outstanding active mailbox command */
if (psli->mbox_active) {
list_add_tail(&psli->mbox_active->list, &completions);
psli->mbox_active = NULL;
psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
}
/* The completed mailbox command queue */
list_splice_init(&phba->sli.mboxq_cmpl, &completions);
spin_unlock_irqrestore(&phba->hbalock, iflag);
/* Return all flushed mailbox commands with MBX_NOT_FINISHED status */
while (!list_empty(&completions)) {
list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list);
pmb->u.mb.mbxStatus = MBX_NOT_FINISHED;
if (pmb->mbox_cmpl)
pmb->mbox_cmpl(phba, pmb);
}
}
/**
* lpfc_sli_host_down - Vport cleanup function
* @vport: Pointer to virtual port object.
*
* lpfc_sli_host_down is called to clean up the resources
* associated with a vport before destroying virtual
* port data structures.
* This function does following operations:
* - Free discovery resources associated with this virtual
* port.
* - Free iocbs associated with this virtual port in
* the txq.
* - Send abort for all iocb commands associated with this
* vport in txcmplq.
*
* This function is called with no lock held and always returns 1.
**/
int
lpfc_sli_host_down(struct lpfc_vport *vport)
{
LIST_HEAD(completions);
struct lpfc_hba *phba = vport->phba;
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring;
struct lpfc_iocbq *iocb, *next_iocb;
int i;
unsigned long flags = 0;
uint16_t prev_pring_flag;
lpfc_cleanup_discovery_resources(vport);
spin_lock_irqsave(&phba->hbalock, flags);
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
prev_pring_flag = pring->flag;
/* Only slow rings */
if (pring->ringno == LPFC_ELS_RING) {
pring->flag |= LPFC_DEFERRED_RING_EVENT;
/* Set the lpfc data pending flag */
set_bit(LPFC_DATA_READY, &phba->data_flags);
}
/*
* Error everything on the txq since these iocbs have not been
* given to the FW yet.
*/
list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
if (iocb->vport != vport)
continue;
list_move_tail(&iocb->list, &completions);
pring->txq_cnt--;
}
/* Next issue ABTS for everything on the txcmplq */
list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
list) {
if (iocb->vport != vport)
continue;
lpfc_sli_issue_abort_iotag(phba, pring, iocb);
}
pring->flag = prev_pring_flag;
}
spin_unlock_irqrestore(&phba->hbalock, flags);
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
IOERR_SLI_DOWN);
return 1;
}
/**
* lpfc_sli_hba_down - Resource cleanup function for the HBA
* @phba: Pointer to HBA context object.
*
* This function cleans up all iocb, buffers, mailbox commands
* while shutting down the HBA. This function is called with no
* lock held and always returns 1.
* This function does the following to cleanup driver resources:
* - Free discovery resources for each virtual port
* - Cleanup any pending fabric iocbs
* - Iterate through the iocb txq and free each entry
* in the list.
* - Free up any buffer posted to the HBA
* - Free mailbox commands in the mailbox queue.
**/
int
lpfc_sli_hba_down(struct lpfc_hba *phba)
{
LIST_HEAD(completions);
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring;
struct lpfc_dmabuf *buf_ptr;
unsigned long flags = 0;
int i;
/* Shutdown the mailbox command sub-system */
lpfc_sli_mbox_sys_shutdown(phba);
lpfc_hba_down_prep(phba);
lpfc_fabric_abort_hba(phba);
spin_lock_irqsave(&phba->hbalock, flags);
for (i = 0; i < psli->num_rings; i++) {
pring = &psli->ring[i];
/* Only slow rings */
if (pring->ringno == LPFC_ELS_RING) {
pring->flag |= LPFC_DEFERRED_RING_EVENT;
/* Set the lpfc data pending flag */
set_bit(LPFC_DATA_READY, &phba->data_flags);
}
/*
* Error everything on the txq since these iocbs have not been
* given to the FW yet.
*/
list_splice_init(&pring->txq, &completions);
pring->txq_cnt = 0;
}
spin_unlock_irqrestore(&phba->hbalock, flags);
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
IOERR_SLI_DOWN);
spin_lock_irqsave(&phba->hbalock, flags);
list_splice_init(&phba->elsbuf, &completions);
phba->elsbuf_cnt = 0;
phba->elsbuf_prev_cnt = 0;
spin_unlock_irqrestore(&phba->hbalock, flags);
while (!list_empty(&completions)) {
list_remove_head(&completions, buf_ptr,
struct lpfc_dmabuf, list);
lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
kfree(buf_ptr);
}
/* Return any active mbox cmds */
del_timer_sync(&psli->mbox_tmo);
spin_lock_irqsave(&phba->pport->work_port_lock, flags);
phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
return 1;
}
/**
* lpfc_sli4_hba_down - PCI function resource cleanup for the SLI4 HBA
* @phba: Pointer to HBA context object.
*
* This function cleans up all queues, iocb, buffers, mailbox commands while
* shutting down the SLI4 HBA FCoE function. This function is called with no
* lock held and always returns 1.
*
* This function does the following to cleanup driver FCoE function resources:
* - Free discovery resources for each virtual port
* - Cleanup any pending fabric iocbs
* - Iterate through the iocb txq and free each entry in the list.
* - Free up any buffer posted to the HBA.
* - Clean up all the queue entries: WQ, RQ, MQ, EQ, CQ, etc.
* - Free mailbox commands in the mailbox queue.
**/
int
lpfc_sli4_hba_down(struct lpfc_hba *phba)
{
/* Stop the SLI4 device port */
lpfc_stop_port(phba);
/* Tear down the queues in the HBA */
lpfc_sli4_queue_unset(phba);
/* unregister default FCFI from the HBA */
lpfc_sli4_fcfi_unreg(phba, phba->fcf.fcfi);
return 1;
}
/**
* lpfc_sli_pcimem_bcopy - SLI memory copy function
* @srcp: Source memory pointer.
* @destp: Destination memory pointer.
* @cnt: Number of words required to be copied.
*
* This function is used for copying data between driver memory
* and the SLI memory. This function also changes the endianness
* of each word if native endianness is different from SLI
* endianness. This function can be called with or without
* lock.
**/
void
lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
{
uint32_t *src = srcp;
uint32_t *dest = destp;
uint32_t ldata;
int i;
for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
ldata = *src;
ldata = le32_to_cpu(ldata);
*dest = ldata;
src++;
dest++;
}
}
/**
* lpfc_sli_ringpostbuf_put - Function to add a buffer to postbufq
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @mp: Pointer to driver buffer object.
*
* This function is called with no lock held.
* It always return zero after adding the buffer to the postbufq
* buffer list.
**/
int
lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_dmabuf *mp)
{
/* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
later */
spin_lock_irq(&phba->hbalock);
list_add_tail(&mp->list, &pring->postbufq);
pring->postbufq_cnt++;
spin_unlock_irq(&phba->hbalock);
return 0;
}
/**
* lpfc_sli_get_buffer_tag - allocates a tag for a CMD_QUE_XRI64_CX buffer
* @phba: Pointer to HBA context object.
*
* When HBQ is enabled, buffers are searched based on tags. This function
* allocates a tag for buffer posted using CMD_QUE_XRI64_CX iocb. The
* tag is bit wise or-ed with QUE_BUFTAG_BIT to make sure that the tag
* does not conflict with tags of buffer posted for unsolicited events.
* The function returns the allocated tag. The function is called with
* no locks held.
**/
uint32_t
lpfc_sli_get_buffer_tag(struct lpfc_hba *phba)
{
spin_lock_irq(&phba->hbalock);
phba->buffer_tag_count++;
/*
* Always set the QUE_BUFTAG_BIT to distiguish between
* a tag assigned by HBQ.
*/
phba->buffer_tag_count |= QUE_BUFTAG_BIT;
spin_unlock_irq(&phba->hbalock);
return phba->buffer_tag_count;
}
/**
* lpfc_sli_ring_taggedbuf_get - find HBQ buffer associated with given tag
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @tag: Buffer tag.
*
* Buffers posted using CMD_QUE_XRI64_CX iocb are in pring->postbufq
* list. After HBA DMA data to these buffers, CMD_IOCB_RET_XRI64_CX
* iocb is posted to the response ring with the tag of the buffer.
* This function searches the pring->postbufq list using the tag
* to find buffer associated with CMD_IOCB_RET_XRI64_CX
* iocb. If the buffer is found then lpfc_dmabuf object of the
* buffer is returned to the caller else NULL is returned.
* This function is called with no lock held.
**/
struct lpfc_dmabuf *
lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
uint32_t tag)
{
struct lpfc_dmabuf *mp, *next_mp;
struct list_head *slp = &pring->postbufq;
/* Search postbufq, from the begining, looking for a match on tag */
spin_lock_irq(&phba->hbalock);
list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
if (mp->buffer_tag == tag) {
list_del_init(&mp->list);
pring->postbufq_cnt--;
spin_unlock_irq(&phba->hbalock);
return mp;
}
}
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0402 Cannot find virtual addr for buffer tag on "
"ring %d Data x%lx x%p x%p x%x\n",
pring->ringno, (unsigned long) tag,
slp->next, slp->prev, pring->postbufq_cnt);
return NULL;
}
/**
* lpfc_sli_ringpostbuf_get - search buffers for unsolicited CT and ELS events
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @phys: DMA address of the buffer.
*
* This function searches the buffer list using the dma_address
* of unsolicited event to find the driver's lpfc_dmabuf object
* corresponding to the dma_address. The function returns the
* lpfc_dmabuf object if a buffer is found else it returns NULL.
* This function is called by the ct and els unsolicited event
* handlers to get the buffer associated with the unsolicited
* event.
*
* This function is called with no lock held.
**/
struct lpfc_dmabuf *
lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
dma_addr_t phys)
{
struct lpfc_dmabuf *mp, *next_mp;
struct list_head *slp = &pring->postbufq;
/* Search postbufq, from the begining, looking for a match on phys */
spin_lock_irq(&phba->hbalock);
list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
if (mp->phys == phys) {
list_del_init(&mp->list);
pring->postbufq_cnt--;
spin_unlock_irq(&phba->hbalock);
return mp;
}
}
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0410 Cannot find virtual addr for mapped buf on "
"ring %d Data x%llx x%p x%p x%x\n",
pring->ringno, (unsigned long long)phys,
slp->next, slp->prev, pring->postbufq_cnt);
return NULL;
}
/**
* lpfc_sli_abort_els_cmpl - Completion handler for the els abort iocbs
* @phba: Pointer to HBA context object.
* @cmdiocb: Pointer to driver command iocb object.
* @rspiocb: Pointer to driver response iocb object.
*
* This function is the completion handler for the abort iocbs for
* ELS commands. This function is called from the ELS ring event
* handler with no lock held. This function frees memory resources
* associated with the abort iocb.
**/
static void
lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
IOCB_t *irsp = &rspiocb->iocb;
uint16_t abort_iotag, abort_context;
struct lpfc_iocbq *abort_iocb;
struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
abort_iocb = NULL;
if (irsp->ulpStatus) {
abort_context = cmdiocb->iocb.un.acxri.abortContextTag;
abort_iotag = cmdiocb->iocb.un.acxri.abortIoTag;
spin_lock_irq(&phba->hbalock);
if (abort_iotag != 0 && abort_iotag <= phba->sli.last_iotag)
abort_iocb = phba->sli.iocbq_lookup[abort_iotag];
lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_SLI,
"0327 Cannot abort els iocb %p "
"with tag %x context %x, abort status %x, "
"abort code %x\n",
abort_iocb, abort_iotag, abort_context,
irsp->ulpStatus, irsp->un.ulpWord[4]);
/*
* If the iocb is not found in Firmware queue the iocb
* might have completed already. Do not free it again.
*/
if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
spin_unlock_irq(&phba->hbalock);
lpfc_sli_release_iocbq(phba, cmdiocb);
return;
}
/*
* make sure we have the right iocbq before taking it
* off the txcmplq and try to call completion routine.
*/
if (!abort_iocb ||
abort_iocb->iocb.ulpContext != abort_context ||
(abort_iocb->iocb_flag & LPFC_DRIVER_ABORTED) == 0)
spin_unlock_irq(&phba->hbalock);
else {
list_del_init(&abort_iocb->list);
pring->txcmplq_cnt--;
spin_unlock_irq(&phba->hbalock);
/* Firmware could still be in progress of DMAing
* payload, so don't free data buffer till after
* a hbeat.
*/
abort_iocb->iocb_flag |= LPFC_DELAY_MEM_FREE;
abort_iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED;
abort_iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
abort_iocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED;
(abort_iocb->iocb_cmpl)(phba, abort_iocb, abort_iocb);
}
}
lpfc_sli_release_iocbq(phba, cmdiocb);
return;
}
/**
* lpfc_ignore_els_cmpl - Completion handler for aborted ELS command
* @phba: Pointer to HBA context object.
* @cmdiocb: Pointer to driver command iocb object.
* @rspiocb: Pointer to driver response iocb object.
*
* The function is called from SLI ring event handler with no
* lock held. This function is the completion handler for ELS commands
* which are aborted. The function frees memory resources used for
* the aborted ELS commands.
**/
static void
lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
IOCB_t *irsp = &rspiocb->iocb;
/* ELS cmd tag <ulpIoTag> completes */
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"0139 Ignoring ELS cmd tag x%x completion Data: "
"x%x x%x x%x\n",
irsp->ulpIoTag, irsp->ulpStatus,
irsp->un.ulpWord[4], irsp->ulpTimeout);
if (cmdiocb->iocb.ulpCommand == CMD_GEN_REQUEST64_CR)
lpfc_ct_free_iocb(phba, cmdiocb);
else
lpfc_els_free_iocb(phba, cmdiocb);
return;
}
/**
* lpfc_sli_issue_abort_iotag - Abort function for a command iocb
* @phba: Pointer to HBA context object.
* @pring: Pointer to driver SLI ring object.
* @cmdiocb: Pointer to driver command iocb object.
*
* This function issues an abort iocb for the provided command
* iocb. This function is called with hbalock held.
* The function returns 0 when it fails due to memory allocation
* failure or when the command iocb is an abort request.
**/
int
lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
struct lpfc_iocbq *cmdiocb)
{
struct lpfc_vport *vport = cmdiocb->vport;
struct lpfc_iocbq *abtsiocbp;
IOCB_t *icmd = NULL;
IOCB_t *iabt = NULL;
int retval = IOCB_ERROR;
/*
* There are certain command types we don't want to abort. And we
* don't want to abort commands that are already in the process of
* being aborted.
*/
icmd = &cmdiocb->iocb;
if (icmd->ulpCommand == CMD_ABORT_XRI_CN ||
icmd->ulpCommand == CMD_CLOSE_XRI_CN ||
(cmdiocb->iocb_flag & LPFC_DRIVER_ABORTED) != 0)
return 0;
/* If we're unloading, don't abort iocb on the ELS ring, but change the
* callback so that nothing happens when it finishes.
*/
if ((vport->load_flag & FC_UNLOADING) &&
(pring->ringno == LPFC_ELS_RING)) {
if (cmdiocb->iocb_flag & LPFC_IO_FABRIC)
cmdiocb->fabric_iocb_cmpl = lpfc_ignore_els_cmpl;
else
cmdiocb->iocb_cmpl = lpfc_ignore_els_cmpl;
goto abort_iotag_exit;
}
/* issue ABTS for this IOCB based on iotag */
abtsiocbp = __lpfc_sli_get_iocbq(phba);
if (abtsiocbp == NULL)
return 0;
/* This signals the response to set the correct status
* before calling the completion handler.
*/
cmdiocb->iocb_flag |= LPFC_DRIVER_ABORTED;
iabt = &abtsiocbp->iocb;
iabt->un.acxri.abortType = ABORT_TYPE_ABTS;
iabt->un.acxri.abortContextTag = icmd->ulpContext;
if (phba->sli_rev == LPFC_SLI_REV4)
iabt->un.acxri.abortIoTag = cmdiocb->sli4_xritag;
else
iabt->un.acxri.abortIoTag = icmd->ulpIoTag;
iabt->ulpLe = 1;
iabt->ulpClass = icmd->ulpClass;
if (phba->link_state >= LPFC_LINK_UP)
iabt->ulpCommand = CMD_ABORT_XRI_CN;
else
iabt->ulpCommand = CMD_CLOSE_XRI_CN;
abtsiocbp->iocb_cmpl = lpfc_sli_abort_els_cmpl;
lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
"0339 Abort xri x%x, original iotag x%x, "
"abort cmd iotag x%x\n",
iabt->un.acxri.abortContextTag,
iabt->un.acxri.abortIoTag, abtsiocbp->iotag);
retval = __lpfc_sli_issue_iocb(phba, pring->ringno, abtsiocbp, 0);
if (retval)
__lpfc_sli_release_iocbq(phba, abtsiocbp);
abort_iotag_exit:
/*
* Caller to this routine should check for IOCB_ERROR
* and handle it properly. This routine no longer removes
* iocb off txcmplq and call compl in case of IOCB_ERROR.
*/
return retval;
}
/**
* lpfc_sli_validate_fcp_iocb - find commands associated with a vport or LUN
* @iocbq: Pointer to driver iocb object.
* @vport: Pointer to driver virtual port object.
* @tgt_id: SCSI ID of the target.
* @lun_id: LUN ID of the scsi device.
* @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST
*
* This function acts as an iocb filter for functions which abort or count
* all FCP iocbs pending on a lun/SCSI target/SCSI host. It will return
* 0 if the filtering criteria is met for the given iocb and will return
* 1 if the filtering criteria is not met.
* If ctx_cmd == LPFC_CTX_LUN, the function returns 0 only if the
* given iocb is for the SCSI device specified by vport, tgt_id and
* lun_id parameter.
* If ctx_cmd == LPFC_CTX_TGT, the function returns 0 only if the
* given iocb is for the SCSI target specified by vport and tgt_id
* parameters.
* If ctx_cmd == LPFC_CTX_HOST, the function returns 0 only if the
* given iocb is for the SCSI host associated with the given vport.
* This function is called with no locks held.
**/
static int
lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, struct lpfc_vport *vport,
uint16_t tgt_id, uint64_t lun_id,
lpfc_ctx_cmd ctx_cmd)
{
struct lpfc_scsi_buf *lpfc_cmd;
int rc = 1;
if (!(iocbq->iocb_flag & LPFC_IO_FCP))
return rc;
if (iocbq->vport != vport)
return rc;
lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
if (lpfc_cmd->pCmd == NULL)
return rc;
switch (ctx_cmd) {
case LPFC_CTX_LUN:
if ((lpfc_cmd->rdata->pnode) &&
(lpfc_cmd->rdata->pnode->nlp_sid == tgt_id) &&
(scsilun_to_int(&lpfc_cmd->fcp_cmnd->fcp_lun) == lun_id))
rc = 0;
break;
case LPFC_CTX_TGT:
if ((lpfc_cmd->rdata->pnode) &&
(lpfc_cmd->rdata->pnode->nlp_sid == tgt_id))
rc = 0;
break;
case LPFC_CTX_HOST:
rc = 0;
break;
default:
printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
__func__, ctx_cmd);
break;
}
return rc;
}
/**
* lpfc_sli_sum_iocb - Function to count the number of FCP iocbs pending
* @vport: Pointer to virtual port.
* @tgt_id: SCSI ID of the target.
* @lun_id: LUN ID of the scsi device.
* @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
*
* This function returns number of FCP commands pending for the vport.
* When ctx_cmd == LPFC_CTX_LUN, the function returns number of FCP
* commands pending on the vport associated with SCSI device specified
* by tgt_id and lun_id parameters.
* When ctx_cmd == LPFC_CTX_TGT, the function returns number of FCP
* commands pending on the vport associated with SCSI target specified
* by tgt_id parameter.
* When ctx_cmd == LPFC_CTX_HOST, the function returns number of FCP
* commands pending on the vport.
* This function returns the number of iocbs which satisfy the filter.
* This function is called without any lock held.
**/
int
lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id,
lpfc_ctx_cmd ctx_cmd)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *iocbq;
int sum, i;
for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
iocbq = phba->sli.iocbq_lookup[i];
if (lpfc_sli_validate_fcp_iocb (iocbq, vport, tgt_id, lun_id,
ctx_cmd) == 0)
sum++;
}
return sum;
}
/**
* lpfc_sli_abort_fcp_cmpl - Completion handler function for aborted FCP IOCBs
* @phba: Pointer to HBA context object
* @cmdiocb: Pointer to command iocb object.
* @rspiocb: Pointer to response iocb object.
*
* This function is called when an aborted FCP iocb completes. This
* function is called by the ring event handler with no lock held.
* This function frees the iocb.
**/
void
lpfc_sli_abort_fcp_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
lpfc_sli_release_iocbq(phba, cmdiocb);
return;
}
/**
* lpfc_sli_abort_iocb - issue abort for all commands on a host/target/LUN
* @vport: Pointer to virtual port.
* @pring: Pointer to driver SLI ring object.
* @tgt_id: SCSI ID of the target.
* @lun_id: LUN ID of the scsi device.
* @abort_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
*
* This function sends an abort command for every SCSI command
* associated with the given virtual port pending on the ring
* filtered by lpfc_sli_validate_fcp_iocb function.
* When abort_cmd == LPFC_CTX_LUN, the function sends abort only to the
* FCP iocbs associated with lun specified by tgt_id and lun_id
* parameters
* When abort_cmd == LPFC_CTX_TGT, the function sends abort only to the
* FCP iocbs associated with SCSI target specified by tgt_id parameter.
* When abort_cmd == LPFC_CTX_HOST, the function sends abort to all
* FCP iocbs associated with virtual port.
* This function returns number of iocbs it failed to abort.
* This function is called with no locks held.
**/
int
lpfc_sli_abort_iocb(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd abort_cmd)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *iocbq;
struct lpfc_iocbq *abtsiocb;
IOCB_t *cmd = NULL;
int errcnt = 0, ret_val = 0;
int i;
for (i = 1; i <= phba->sli.last_iotag; i++) {
iocbq = phba->sli.iocbq_lookup[i];
if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
abort_cmd) != 0)
continue;
/* issue ABTS for this IOCB based on iotag */
abtsiocb = lpfc_sli_get_iocbq(phba);
if (abtsiocb == NULL) {
errcnt++;
continue;
}
cmd = &iocbq->iocb;
abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
if (phba->sli_rev == LPFC_SLI_REV4)
abtsiocb->iocb.un.acxri.abortIoTag = iocbq->sli4_xritag;
else
abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
abtsiocb->iocb.ulpLe = 1;
abtsiocb->iocb.ulpClass = cmd->ulpClass;
abtsiocb->vport = phba->pport;
if (lpfc_is_link_up(phba))
abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
else
abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
/* Setup callback routine and issue the command. */
abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
ret_val = lpfc_sli_issue_iocb(phba, pring->ringno,
abtsiocb, 0);
if (ret_val == IOCB_ERROR) {
lpfc_sli_release_iocbq(phba, abtsiocb);
errcnt++;
continue;
}
}
return errcnt;
}
/**
* lpfc_sli_wake_iocb_wait - lpfc_sli_issue_iocb_wait's completion handler
* @phba: Pointer to HBA context object.
* @cmdiocbq: Pointer to command iocb.
* @rspiocbq: Pointer to response iocb.
*
* This function is the completion handler for iocbs issued using
* lpfc_sli_issue_iocb_wait function. This function is called by the
* ring event handler function without any lock held. This function
* can be called from both worker thread context and interrupt
* context. This function also can be called from other thread which
* cleans up the SLI layer objects.
* This function copy the contents of the response iocb to the
* response iocb memory object provided by the caller of
* lpfc_sli_issue_iocb_wait and then wakes up the thread which
* sleeps for the iocb completion.
**/
static void
lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
struct lpfc_iocbq *cmdiocbq,
struct lpfc_iocbq *rspiocbq)
{
wait_queue_head_t *pdone_q;
unsigned long iflags;
spin_lock_irqsave(&phba->hbalock, iflags);
cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
if (cmdiocbq->context2 && rspiocbq)
memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
&rspiocbq->iocb, sizeof(IOCB_t));
pdone_q = cmdiocbq->context_un.wait_queue;
if (pdone_q)
wake_up(pdone_q);
spin_unlock_irqrestore(&phba->hbalock, iflags);
return;
}
/**
* lpfc_chk_iocb_flg - Test IOCB flag with lock held.
* @phba: Pointer to HBA context object..
* @piocbq: Pointer to command iocb.
* @flag: Flag to test.
*
* This routine grabs the hbalock and then test the iocb_flag to
* see if the passed in flag is set.
* Returns:
* 1 if flag is set.
* 0 if flag is not set.
**/
static int
lpfc_chk_iocb_flg(struct lpfc_hba *phba,
struct lpfc_iocbq *piocbq, uint32_t flag)
{
unsigned long iflags;
int ret;
spin_lock_irqsave(&phba->hbalock, iflags);
ret = piocbq->iocb_flag & flag;
spin_unlock_irqrestore(&phba->hbalock, iflags);
return ret;
}
/**
* lpfc_sli_issue_iocb_wait - Synchronous function to issue iocb commands
* @phba: Pointer to HBA context object..
* @pring: Pointer to sli ring.
* @piocb: Pointer to command iocb.
* @prspiocbq: Pointer to response iocb.
* @timeout: Timeout in number of seconds.
*
* This function issues the iocb to firmware and waits for the
* iocb to complete. If the iocb command is not
* completed within timeout seconds, it returns IOCB_TIMEDOUT.
* Caller should not free the iocb resources if this function
* returns IOCB_TIMEDOUT.
* The function waits for the iocb completion using an
* non-interruptible wait.
* This function will sleep while waiting for iocb completion.
* So, this function should not be called from any context which
* does not allow sleeping. Due to the same reason, this function
* cannot be called with interrupt disabled.
* This function assumes that the iocb completions occur while
* this function sleep. So, this function cannot be called from
* the thread which process iocb completion for this ring.
* This function clears the iocb_flag of the iocb object before
* issuing the iocb and the iocb completion handler sets this
* flag and wakes this thread when the iocb completes.
* The contents of the response iocb will be copied to prspiocbq
* by the completion handler when the command completes.
* This function returns IOCB_SUCCESS when success.
* This function is called with no lock held.
**/
int
lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba,
uint32_t ring_number,
struct lpfc_iocbq *piocb,
struct lpfc_iocbq *prspiocbq,
uint32_t timeout)
{
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
long timeleft, timeout_req = 0;
int retval = IOCB_SUCCESS;
uint32_t creg_val;
/*
* If the caller has provided a response iocbq buffer, then context2
* is NULL or its an error.
*/
if (prspiocbq) {
if (piocb->context2)
return IOCB_ERROR;
piocb->context2 = prspiocbq;
}
piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
piocb->context_un.wait_queue = &done_q;
piocb->iocb_flag &= ~LPFC_IO_WAKE;
if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
creg_val = readl(phba->HCregaddr);
creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
writel(creg_val, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
}
retval = lpfc_sli_issue_iocb(phba, ring_number, piocb, 0);
if (retval == IOCB_SUCCESS) {
timeout_req = timeout * HZ;
timeleft = wait_event_timeout(done_q,
lpfc_chk_iocb_flg(phba, piocb, LPFC_IO_WAKE),
timeout_req);
if (piocb->iocb_flag & LPFC_IO_WAKE) {
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"0331 IOCB wake signaled\n");
} else if (timeleft == 0) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0338 IOCB wait timeout error - no "
"wake response Data x%x\n", timeout);
retval = IOCB_TIMEDOUT;
} else {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0330 IOCB wake NOT set, "
"Data x%x x%lx\n",
timeout, (timeleft / jiffies));
retval = IOCB_TIMEDOUT;
}
} else {
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"0332 IOCB wait issue failed, Data x%x\n",
retval);
retval = IOCB_ERROR;
}
if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
creg_val = readl(phba->HCregaddr);
creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
writel(creg_val, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
}
if (prspiocbq)
piocb->context2 = NULL;
piocb->context_un.wait_queue = NULL;
piocb->iocb_cmpl = NULL;
return retval;
}
/**
* lpfc_sli_issue_mbox_wait - Synchronous function to issue mailbox
* @phba: Pointer to HBA context object.
* @pmboxq: Pointer to driver mailbox object.
* @timeout: Timeout in number of seconds.
*
* This function issues the mailbox to firmware and waits for the
* mailbox command to complete. If the mailbox command is not
* completed within timeout seconds, it returns MBX_TIMEOUT.
* The function waits for the mailbox completion using an
* interruptible wait. If the thread is woken up due to a
* signal, MBX_TIMEOUT error is returned to the caller. Caller
* should not free the mailbox resources, if this function returns
* MBX_TIMEOUT.
* This function will sleep while waiting for mailbox completion.
* So, this function should not be called from any context which
* does not allow sleeping. Due to the same reason, this function
* cannot be called with interrupt disabled.
* This function assumes that the mailbox completion occurs while
* this function sleep. So, this function cannot be called from
* the worker thread which processes mailbox completion.
* This function is called in the context of HBA management
* applications.
* This function returns MBX_SUCCESS when successful.
* This function is called with no lock held.
**/
int
lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq,
uint32_t timeout)
{
DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
int retval;
unsigned long flag;
/* The caller must leave context1 empty. */
if (pmboxq->context1)
return MBX_NOT_FINISHED;
pmboxq->mbox_flag &= ~LPFC_MBX_WAKE;
/* setup wake call as IOCB callback */
pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
/* setup context field to pass wait_queue pointer to wake function */
pmboxq->context1 = &done_q;
/* now issue the command */
retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
wait_event_interruptible_timeout(done_q,
pmboxq->mbox_flag & LPFC_MBX_WAKE,
timeout * HZ);
spin_lock_irqsave(&phba->hbalock, flag);
pmboxq->context1 = NULL;
/*
* if LPFC_MBX_WAKE flag is set the mailbox is completed
* else do not free the resources.
*/
if (pmboxq->mbox_flag & LPFC_MBX_WAKE)
retval = MBX_SUCCESS;
else {
retval = MBX_TIMEOUT;
pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
}
spin_unlock_irqrestore(&phba->hbalock, flag);
}
return retval;
}
/**
* lpfc_sli_mbox_sys_shutdown - shutdown mailbox command sub-system
* @phba: Pointer to HBA context.
*
* This function is called to shutdown the driver's mailbox sub-system.
* It first marks the mailbox sub-system is in a block state to prevent
* the asynchronous mailbox command from issued off the pending mailbox
* command queue. If the mailbox command sub-system shutdown is due to
* HBA error conditions such as EEH or ERATT, this routine shall invoke
* the mailbox sub-system flush routine to forcefully bring down the
* mailbox sub-system. Otherwise, if it is due to normal condition (such
* as with offline or HBA function reset), this routine will wait for the
* outstanding mailbox command to complete before invoking the mailbox
* sub-system flush routine to gracefully bring down mailbox sub-system.
**/
void
lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *phba)
{
struct lpfc_sli *psli = &phba->sli;
uint8_t actcmd = MBX_HEARTBEAT;
unsigned long timeout;
spin_lock_irq(&phba->hbalock);
psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
spin_unlock_irq(&phba->hbalock);
if (psli->sli_flag & LPFC_SLI_ACTIVE) {
spin_lock_irq(&phba->hbalock);
if (phba->sli.mbox_active)
actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
spin_unlock_irq(&phba->hbalock);
/* Determine how long we might wait for the active mailbox
* command to be gracefully completed by firmware.
*/
timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) *
1000) + jiffies;
while (phba->sli.mbox_active) {
/* Check active mailbox complete status every 2ms */
msleep(2);
if (time_after(jiffies, timeout))
/* Timeout, let the mailbox flush routine to
* forcefully release active mailbox command
*/
break;
}
}
lpfc_sli_mbox_sys_flush(phba);
}
/**
* lpfc_sli_eratt_read - read sli-3 error attention events
* @phba: Pointer to HBA context.
*
* This function is called to read the SLI3 device error attention registers
* for possible error attention events. The caller must hold the hostlock
* with spin_lock_irq().
*
* This fucntion returns 1 when there is Error Attention in the Host Attention
* Register and returns 0 otherwise.
**/
static int
lpfc_sli_eratt_read(struct lpfc_hba *phba)
{
uint32_t ha_copy;
/* Read chip Host Attention (HA) register */
ha_copy = readl(phba->HAregaddr);
if (ha_copy & HA_ERATT) {
/* Read host status register to retrieve error event */
lpfc_sli_read_hs(phba);
/* Check if there is a deferred error condition is active */
if ((HS_FFER1 & phba->work_hs) &&
((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 |
HS_FFER6 | HS_FFER7) & phba->work_hs)) {
phba->hba_flag |= DEFER_ERATT;
/* Clear all interrupt enable conditions */
writel(0, phba->HCregaddr);
readl(phba->HCregaddr);
}
/* Set the driver HA work bitmap */
phba->work_ha |= HA_ERATT;
/* Indicate polling handles this ERATT */
phba->hba_flag |= HBA_ERATT_HANDLED;
return 1;
}
return 0;
}
/**
* lpfc_sli4_eratt_read - read sli-4 error attention events
* @phba: Pointer to HBA context.
*
* This function is called to read the SLI4 device error attention registers
* for possible error attention events. The caller must hold the hostlock
* with spin_lock_irq().
*
* This fucntion returns 1 when there is Error Attention in the Host Attention
* Register and returns 0 otherwise.
**/
static int
lpfc_sli4_eratt_read(struct lpfc_hba *phba)
{
uint32_t uerr_sta_hi, uerr_sta_lo;
uint32_t onlnreg0, onlnreg1;
/* For now, use the SLI4 device internal unrecoverable error
* registers for error attention. This can be changed later.
*/
onlnreg0 = readl(phba->sli4_hba.ONLINE0regaddr);
onlnreg1 = readl(phba->sli4_hba.ONLINE1regaddr);
if ((onlnreg0 != LPFC_ONLINE_NERR) || (onlnreg1 != LPFC_ONLINE_NERR)) {
uerr_sta_lo = readl(phba->sli4_hba.UERRLOregaddr);
uerr_sta_hi = readl(phba->sli4_hba.UERRHIregaddr);
if (uerr_sta_lo || uerr_sta_hi) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"1423 HBA Unrecoverable error: "
"uerr_lo_reg=0x%x, uerr_hi_reg=0x%x, "
"online0_reg=0x%x, online1_reg=0x%x\n",
uerr_sta_lo, uerr_sta_hi,
onlnreg0, onlnreg1);
/* TEMP: as the driver error recover logic is not
* fully developed, we just log the error message
* and the device error attention action is now
* temporarily disabled.
*/
return 0;
phba->work_status[0] = uerr_sta_lo;
phba->work_status[1] = uerr_sta_hi;
/* Set the driver HA work bitmap */
phba->work_ha |= HA_ERATT;
/* Indicate polling handles this ERATT */
phba->hba_flag |= HBA_ERATT_HANDLED;
return 1;
}
}
return 0;
}
/**
* lpfc_sli_check_eratt - check error attention events
* @phba: Pointer to HBA context.
*
* This function is called from timer soft interrupt context to check HBA's
* error attention register bit for error attention events.
*
* This fucntion returns 1 when there is Error Attention in the Host Attention
* Register and returns 0 otherwise.
**/
int
lpfc_sli_check_eratt(struct lpfc_hba *phba)
{
uint32_t ha_copy;
/* If somebody is waiting to handle an eratt, don't process it
* here. The brdkill function will do this.
*/
if (phba->link_flag & LS_IGNORE_ERATT)
return 0;
/* Check if interrupt handler handles this ERATT */
spin_lock_irq(&phba->hbalock);
if (phba->hba_flag & HBA_ERATT_HANDLED) {
/* Interrupt handler has handled ERATT */
spin_unlock_irq(&phba->hbalock);
return 0;
}
/*
* If there is deferred error attention, do not check for error
* attention
*/
if (unlikely(phba->hba_flag & DEFER_ERATT)) {
spin_unlock_irq(&phba->hbalock);
return 0;
}
/* If PCI channel is offline, don't process it */
if (unlikely(pci_channel_offline(phba->pcidev))) {
spin_unlock_irq(&phba->hbalock);
return 0;
}
switch (phba->sli_rev) {
case LPFC_SLI_REV2:
case LPFC_SLI_REV3:
/* Read chip Host Attention (HA) register */
ha_copy = lpfc_sli_eratt_read(phba);
break;
case LPFC_SLI_REV4:
/* Read devcie Uncoverable Error (UERR) registers */
ha_copy = lpfc_sli4_eratt_read(phba);
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0299 Invalid SLI revision (%d)\n",
phba->sli_rev);
ha_copy = 0;
break;
}
spin_unlock_irq(&phba->hbalock);
return ha_copy;
}
/**
* lpfc_intr_state_check - Check device state for interrupt handling
* @phba: Pointer to HBA context.
*
* This inline routine checks whether a device or its PCI slot is in a state
* that the interrupt should be handled.
*
* This function returns 0 if the device or the PCI slot is in a state that
* interrupt should be handled, otherwise -EIO.
*/
static inline int
lpfc_intr_state_check(struct lpfc_hba *phba)
{
/* If the pci channel is offline, ignore all the interrupts */
if (unlikely(pci_channel_offline(phba->pcidev)))
return -EIO;
/* Update device level interrupt statistics */
phba->sli.slistat.sli_intr++;
/* Ignore all interrupts during initialization. */
if (unlikely(phba->link_state < LPFC_LINK_DOWN))
return -EIO;
return 0;
}
/**
* lpfc_sli_sp_intr_handler - Slow-path interrupt handler to SLI-3 device
* @irq: Interrupt number.
* @dev_id: The device context pointer.
*
* This function is directly called from the PCI layer as an interrupt
* service routine when device with SLI-3 interface spec is enabled with
* MSI-X multi-message interrupt mode and there are slow-path events in
* the HBA. However, when the device is enabled with either MSI or Pin-IRQ
* interrupt mode, this function is called as part of the device-level
* interrupt handler. When the PCI slot is in error recovery or the HBA
* is undergoing initialization, the interrupt handler will not process
* the interrupt. The link attention and ELS ring attention events are
* handled by the worker thread. The interrupt handler signals the worker
* thread and returns for these events. This function is called without
* any lock held. It gets the hbalock to access and update SLI data
* structures.
*
* This function returns IRQ_HANDLED when interrupt is handled else it
* returns IRQ_NONE.
**/
irqreturn_t
lpfc_sli_sp_intr_handler(int irq, void *dev_id)
{
struct lpfc_hba *phba;
uint32_t ha_copy;
uint32_t work_ha_copy;
unsigned long status;
unsigned long iflag;
uint32_t control;
MAILBOX_t *mbox, *pmbox;
struct lpfc_vport *vport;
struct lpfc_nodelist *ndlp;
struct lpfc_dmabuf *mp;
LPFC_MBOXQ_t *pmb;
int rc;
/*
* Get the driver's phba structure from the dev_id and
* assume the HBA is not interrupting.
*/
phba = (struct lpfc_hba *)dev_id;
if (unlikely(!phba))
return IRQ_NONE;
/*
* Stuff needs to be attented to when this function is invoked as an
* individual interrupt handler in MSI-X multi-message interrupt mode
*/
if (phba->intr_type == MSIX) {
/* Check device state for handling interrupt */
if (lpfc_intr_state_check(phba))
return IRQ_NONE;
/* Need to read HA REG for slow-path events */
spin_lock_irqsave(&phba->hbalock, iflag);
ha_copy = readl(phba->HAregaddr);
/* If somebody is waiting to handle an eratt don't process it
* here. The brdkill function will do this.
*/
if (phba->link_flag & LS_IGNORE_ERATT)
ha_copy &= ~HA_ERATT;
/* Check the need for handling ERATT in interrupt handler */
if (ha_copy & HA_ERATT) {
if (phba->hba_flag & HBA_ERATT_HANDLED)
/* ERATT polling has handled ERATT */
ha_copy &= ~HA_ERATT;
else
/* Indicate interrupt handler handles ERATT */
phba->hba_flag |= HBA_ERATT_HANDLED;
}
/*
* If there is deferred error attention, do not check for any
* interrupt.
*/
if (unlikely(phba->hba_flag & DEFER_ERATT)) {
spin_unlock_irqrestore(&phba->hbalock, iflag);
return IRQ_NONE;
}
/* Clear up only attention source related to slow-path */
writel((ha_copy & (HA_MBATT | HA_R2_CLR_MSK)),
phba->HAregaddr);
readl(phba->HAregaddr); /* flush */
spin_unlock_irqrestore(&phba->hbalock, iflag);
} else
ha_copy = phba->ha_copy;
work_ha_copy = ha_copy & phba->work_ha_mask;
if (work_ha_copy) {
if (work_ha_copy & HA_LATT) {
if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
/*
* Turn off Link Attention interrupts
* until CLEAR_LA done
*/
spin_lock_irqsave(&phba->hbalock, iflag);
phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
control = readl(phba->HCregaddr);
control &= ~HC_LAINT_ENA;
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
spin_unlock_irqrestore(&phba->hbalock, iflag);
}
else
work_ha_copy &= ~HA_LATT;
}
if (work_ha_copy & ~(HA_ERATT | HA_MBATT | HA_LATT)) {
/*
* Turn off Slow Rings interrupts, LPFC_ELS_RING is
* the only slow ring.
*/
status = (work_ha_copy &
(HA_RXMASK << (4*LPFC_ELS_RING)));
status >>= (4*LPFC_ELS_RING);
if (status & HA_RXMASK) {
spin_lock_irqsave(&phba->hbalock, iflag);
control = readl(phba->HCregaddr);
lpfc_debugfs_slow_ring_trc(phba,
"ISR slow ring: ctl:x%x stat:x%x isrcnt:x%x",
control, status,
(uint32_t)phba->sli.slistat.sli_intr);
if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) {
lpfc_debugfs_slow_ring_trc(phba,
"ISR Disable ring:"
"pwork:x%x hawork:x%x wait:x%x",
phba->work_ha, work_ha_copy,
(uint32_t)((unsigned long)
&phba->work_waitq));
control &=
~(HC_R0INT_ENA << LPFC_ELS_RING);
writel(control, phba->HCregaddr);
readl(phba->HCregaddr); /* flush */
}
else {
lpfc_debugfs_slow_ring_trc(phba,
"ISR slow ring: pwork:"
"x%x hawork:x%x wait:x%x",
phba->work_ha, work_ha_copy,
(uint32_t)((unsigned long)
&phba->work_waitq));
}
spin_unlock_irqrestore(&phba->hbalock, iflag);
}
}
spin_lock_irqsave(&phba->hbalock, iflag);
if (work_ha_copy & HA_ERATT) {
lpfc_sli_read_hs(phba);
/*
* Check if there is a deferred error condition
* is active
*/
if ((HS_FFER1 & phba->work_hs) &&
((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 |
HS_FFER6 | HS_FFER7) & phba->work_hs)) {
phba->hba_flag |= DEFER_ERATT;
/* Clear all interrupt enable conditions */
writel(0, phba->HCregaddr);
readl(phba->HCregaddr);
}
}
if ((work_ha_copy & HA_MBATT) && (phba->sli.mbox_active)) {
pmb = phba->sli.mbox_active;
pmbox = &pmb->u.mb;
mbox = phba->mbox;
vport = pmb->vport;
/* First check out the status word */
lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof(uint32_t));
if (pmbox->mbxOwner != OWN_HOST) {
spin_unlock_irqrestore(&phba->hbalock, iflag);
/*
* Stray Mailbox Interrupt, mbxCommand <cmd>
* mbxStatus <status>
*/
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
LOG_SLI,
"(%d):0304 Stray Mailbox "
"Interrupt mbxCommand x%x "
"mbxStatus x%x\n",
(vport ? vport->vpi : 0),
pmbox->mbxCommand,
pmbox->mbxStatus);
/* clear mailbox attention bit */
work_ha_copy &= ~HA_MBATT;
} else {
phba->sli.mbox_active = NULL;
spin_unlock_irqrestore(&phba->hbalock, iflag);
phba->last_completion_time = jiffies;
del_timer(&phba->sli.mbox_tmo);
if (pmb->mbox_cmpl) {
lpfc_sli_pcimem_bcopy(mbox, pmbox,
MAILBOX_CMD_SIZE);
}
if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
lpfc_debugfs_disc_trc(vport,
LPFC_DISC_TRC_MBOX_VPORT,
"MBOX dflt rpi: : "
"status:x%x rpi:x%x",
(uint32_t)pmbox->mbxStatus,
pmbox->un.varWords[0], 0);
if (!pmbox->mbxStatus) {
mp = (struct lpfc_dmabuf *)
(pmb->context1);
ndlp = (struct lpfc_nodelist *)
pmb->context2;
/* Reg_LOGIN of dflt RPI was
* successful. new lets get
* rid of the RPI using the
* same mbox buffer.
*/
lpfc_unreg_login(phba,
vport->vpi,
pmbox->un.varWords[0],
pmb);
pmb->mbox_cmpl =
lpfc_mbx_cmpl_dflt_rpi;
pmb->context1 = mp;
pmb->context2 = ndlp;
pmb->vport = vport;
rc = lpfc_sli_issue_mbox(phba,
pmb,
MBX_NOWAIT);
if (rc != MBX_BUSY)
lpfc_printf_log(phba,
KERN_ERR,
LOG_MBOX | LOG_SLI,
"0350 rc should have"
"been MBX_BUSY");
if (rc != MBX_NOT_FINISHED)
goto send_current_mbox;
}
}
spin_lock_irqsave(
&phba->pport->work_port_lock,
iflag);
phba->pport->work_port_events &=
~WORKER_MBOX_TMO;
spin_unlock_irqrestore(
&phba->pport->work_port_lock,
iflag);
lpfc_mbox_cmpl_put(phba, pmb);
}
} else
spin_unlock_irqrestore(&phba->hbalock, iflag);
if ((work_ha_copy & HA_MBATT) &&
(phba->sli.mbox_active == NULL)) {
send_current_mbox:
/* Process next mailbox command if there is one */
do {
rc = lpfc_sli_issue_mbox(phba, NULL,
MBX_NOWAIT);
} while (rc == MBX_NOT_FINISHED);
if (rc != MBX_SUCCESS)
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
LOG_SLI, "0349 rc should be "
"MBX_SUCCESS");
}
spin_lock_irqsave(&phba->hbalock, iflag);
phba->work_ha |= work_ha_copy;
spin_unlock_irqrestore(&phba->hbalock, iflag);
lpfc_worker_wake_up(phba);
}
return IRQ_HANDLED;
} /* lpfc_sli_sp_intr_handler */
/**
* lpfc_sli_fp_intr_handler - Fast-path interrupt handler to SLI-3 device.
* @irq: Interrupt number.
* @dev_id: The device context pointer.
*
* This function is directly called from the PCI layer as an interrupt
* service routine when device with SLI-3 interface spec is enabled with
* MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB
* ring event in the HBA. However, when the device is enabled with either
* MSI or Pin-IRQ interrupt mode, this function is called as part of the
* device-level interrupt handler. When the PCI slot is in error recovery
* or the HBA is undergoing initialization, the interrupt handler will not
* process the interrupt. The SCSI FCP fast-path ring event are handled in
* the intrrupt context. This function is called without any lock held.
* It gets the hbalock to access and update SLI data structures.
*
* This function returns IRQ_HANDLED when interrupt is handled else it
* returns IRQ_NONE.
**/
irqreturn_t
lpfc_sli_fp_intr_handler(int irq, void *dev_id)
{
struct lpfc_hba *phba;
uint32_t ha_copy;
unsigned long status;
unsigned long iflag;
/* Get the driver's phba structure from the dev_id and
* assume the HBA is not interrupting.
*/
phba = (struct lpfc_hba *) dev_id;
if (unlikely(!phba))
return IRQ_NONE;
/*
* Stuff needs to be attented to when this function is invoked as an
* individual interrupt handler in MSI-X multi-message interrupt mode
*/
if (phba->intr_type == MSIX) {
/* Check device state for handling interrupt */
if (lpfc_intr_state_check(phba))
return IRQ_NONE;
/* Need to read HA REG for FCP ring and other ring events */
ha_copy = readl(phba->HAregaddr);
/* Clear up only attention source related to fast-path */
spin_lock_irqsave(&phba->hbalock, iflag);
/*
* If there is deferred error attention, do not check for
* any interrupt.
*/
if (unlikely(phba->hba_flag & DEFER_ERATT)) {
spin_unlock_irqrestore(&phba->hbalock, iflag);
return IRQ_NONE;
}
writel((ha_copy & (HA_R0_CLR_MSK | HA_R1_CLR_MSK)),
phba->HAregaddr);
readl(phba->HAregaddr); /* flush */
spin_unlock_irqrestore(&phba->hbalock, iflag);
} else
ha_copy = phba->ha_copy;
/*
* Process all events on FCP ring. Take the optimized path for FCP IO.
*/
ha_copy &= ~(phba->work_ha_mask);
status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
status >>= (4*LPFC_FCP_RING);
if (status & HA_RXMASK)
lpfc_sli_handle_fast_ring_event(phba,
&phba->sli.ring[LPFC_FCP_RING],
status);
if (phba->cfg_multi_ring_support == 2) {
/*
* Process all events on extra ring. Take the optimized path
* for extra ring IO.
*/
status = (ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING)));
status >>= (4*LPFC_EXTRA_RING);
if (status & HA_RXMASK) {
lpfc_sli_handle_fast_ring_event(phba,
&phba->sli.ring[LPFC_EXTRA_RING],
status);
}
}
return IRQ_HANDLED;
} /* lpfc_sli_fp_intr_handler */
/**
* lpfc_sli_intr_handler - Device-level interrupt handler to SLI-3 device
* @irq: Interrupt number.
* @dev_id: The device context pointer.
*
* This function is the HBA device-level interrupt handler to device with
* SLI-3 interface spec, called from the PCI layer when either MSI or
* Pin-IRQ interrupt mode is enabled and there is an event in the HBA which
* requires driver attention. This function invokes the slow-path interrupt
* attention handling function and fast-path interrupt attention handling
* function in turn to process the relevant HBA attention events. This
* function is called without any lock held. It gets the hbalock to access
* and update SLI data structures.
*
* This function returns IRQ_HANDLED when interrupt is handled, else it
* returns IRQ_NONE.
**/
irqreturn_t
lpfc_sli_intr_handler(int irq, void *dev_id)
{
struct lpfc_hba *phba;
irqreturn_t sp_irq_rc, fp_irq_rc;
unsigned long status1, status2;
/*
* Get the driver's phba structure from the dev_id and
* assume the HBA is not interrupting.
*/
phba = (struct lpfc_hba *) dev_id;
if (unlikely(!phba))
return IRQ_NONE;
/* Check device state for handling interrupt */
if (lpfc_intr_state_check(phba))
return IRQ_NONE;
spin_lock(&phba->hbalock);
phba->ha_copy = readl(phba->HAregaddr);
if (unlikely(!phba->ha_copy)) {
spin_unlock(&phba->hbalock);
return IRQ_NONE;
} else if (phba->ha_copy & HA_ERATT) {
if (phba->hba_flag & HBA_ERATT_HANDLED)
/* ERATT polling has handled ERATT */
phba->ha_copy &= ~HA_ERATT;
else
/* Indicate interrupt handler handles ERATT */
phba->hba_flag |= HBA_ERATT_HANDLED;
}
/*
* If there is deferred error attention, do not check for any interrupt.
*/
if (unlikely(phba->hba_flag & DEFER_ERATT)) {
spin_unlock_irq(&phba->hbalock);
return IRQ_NONE;
}
/* Clear attention sources except link and error attentions */
writel((phba->ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
readl(phba->HAregaddr); /* flush */
spin_unlock(&phba->hbalock);
/*
* Invokes slow-path host attention interrupt handling as appropriate.
*/
/* status of events with mailbox and link attention */
status1 = phba->ha_copy & (HA_MBATT | HA_LATT | HA_ERATT);
/* status of events with ELS ring */
status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
status2 >>= (4*LPFC_ELS_RING);
if (status1 || (status2 & HA_RXMASK))
sp_irq_rc = lpfc_sli_sp_intr_handler(irq, dev_id);
else
sp_irq_rc = IRQ_NONE;
/*
* Invoke fast-path host attention interrupt handling as appropriate.
*/
/* status of events with FCP ring */
status1 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
status1 >>= (4*LPFC_FCP_RING);
/* status of events with extra ring */
if (phba->cfg_multi_ring_support == 2) {
status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING)));
status2 >>= (4*LPFC_EXTRA_RING);
} else
status2 = 0;
if ((status1 & HA_RXMASK) || (status2 & HA_RXMASK))
fp_irq_rc = lpfc_sli_fp_intr_handler(irq, dev_id);
else
fp_irq_rc = IRQ_NONE;
/* Return device-level interrupt handling status */
return (sp_irq_rc == IRQ_HANDLED) ? sp_irq_rc : fp_irq_rc;
} /* lpfc_sli_intr_handler */
/**
* lpfc_sli4_fcp_xri_abort_event_proc - Process fcp xri abort event
* @phba: pointer to lpfc hba data structure.
*
* This routine is invoked by the worker thread to process all the pending
* SLI4 FCP abort XRI events.
**/
void lpfc_sli4_fcp_xri_abort_event_proc(struct lpfc_hba *phba)
{
struct lpfc_cq_event *cq_event;
/* First, declare the fcp xri abort event has been handled */
spin_lock_irq(&phba->hbalock);
phba->hba_flag &= ~FCP_XRI_ABORT_EVENT;
spin_unlock_irq(&phba->hbalock);
/* Now, handle all the fcp xri abort events */
while (!list_empty(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue)) {
/* Get the first event from the head of the event queue */
spin_lock_irq(&phba->hbalock);
list_remove_head(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue,
cq_event, struct lpfc_cq_event, list);
spin_unlock_irq(&phba->hbalock);
/* Notify aborted XRI for FCP work queue */
lpfc_sli4_fcp_xri_aborted(phba, &cq_event->cqe.wcqe_axri);
/* Free the event processed back to the free pool */
lpfc_sli4_cq_event_release(phba, cq_event);
}
}
/**
* lpfc_sli4_els_xri_abort_event_proc - Process els xri abort event
* @phba: pointer to lpfc hba data structure.
*
* This routine is invoked by the worker thread to process all the pending
* SLI4 els abort xri events.
**/
void lpfc_sli4_els_xri_abort_event_proc(struct lpfc_hba *phba)
{
struct lpfc_cq_event *cq_event;
/* First, declare the els xri abort event has been handled */
spin_lock_irq(&phba->hbalock);
phba->hba_flag &= ~ELS_XRI_ABORT_EVENT;
spin_unlock_irq(&phba->hbalock);
/* Now, handle all the els xri abort events */
while (!list_empty(&phba->sli4_hba.sp_els_xri_aborted_work_queue)) {
/* Get the first event from the head of the event queue */
spin_lock_irq(&phba->hbalock);
list_remove_head(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
cq_event, struct lpfc_cq_event, list);
spin_unlock_irq(&phba->hbalock);
/* Notify aborted XRI for ELS work queue */
lpfc_sli4_els_xri_aborted(phba, &cq_event->cqe.wcqe_axri);
/* Free the event processed back to the free pool */
lpfc_sli4_cq_event_release(phba, cq_event);
}
}
static void
lpfc_sli4_iocb_param_transfer(struct lpfc_iocbq *pIocbIn,
struct lpfc_iocbq *pIocbOut,
struct lpfc_wcqe_complete *wcqe)
{
size_t offset = offsetof(struct lpfc_iocbq, iocb);
memcpy((char *)pIocbIn + offset, (char *)pIocbOut + offset,
sizeof(struct lpfc_iocbq) - offset);
memset(&pIocbIn->sli4_info, 0,
sizeof(struct lpfc_sli4_rspiocb_info));
/* Map WCQE parameters into irspiocb parameters */
pIocbIn->iocb.ulpStatus = bf_get(lpfc_wcqe_c_status, wcqe);
if (pIocbOut->iocb_flag & LPFC_IO_FCP)
if (pIocbIn->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR)
pIocbIn->iocb.un.fcpi.fcpi_parm =
pIocbOut->iocb.un.fcpi.fcpi_parm -
wcqe->total_data_placed;
else
pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter;
else
pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter;
/* Load in additional WCQE parameters */
pIocbIn->sli4_info.hw_status = bf_get(lpfc_wcqe_c_hw_status, wcqe);
pIocbIn->sli4_info.bfield = 0;
if (bf_get(lpfc_wcqe_c_xb, wcqe))
pIocbIn->sli4_info.bfield |= LPFC_XB;
if (bf_get(lpfc_wcqe_c_pv, wcqe)) {
pIocbIn->sli4_info.bfield |= LPFC_PV;
pIocbIn->sli4_info.priority =
bf_get(lpfc_wcqe_c_priority, wcqe);
}
}
/**
* lpfc_sli4_sp_handle_async_event - Handle an asynchroous event
* @phba: Pointer to HBA context object.
* @cqe: Pointer to mailbox completion queue entry.
*
* This routine process a mailbox completion queue entry with asynchrous
* event.
*
* Return: true if work posted to worker thread, otherwise false.
**/
static bool
lpfc_sli4_sp_handle_async_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe)
{
struct lpfc_cq_event *cq_event;
unsigned long iflags;
lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
"0392 Async Event: word0:x%x, word1:x%x, "
"word2:x%x, word3:x%x\n", mcqe->word0,
mcqe->mcqe_tag0, mcqe->mcqe_tag1, mcqe->trailer);
/* Allocate a new internal CQ_EVENT entry */
cq_event = lpfc_sli4_cq_event_alloc(phba);
if (!cq_event) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0394 Failed to allocate CQ_EVENT entry\n");
return false;
}
/* Move the CQE into an asynchronous event entry */
memcpy(&cq_event->cqe, mcqe, sizeof(struct lpfc_mcqe));
spin_lock_irqsave(&phba->hbalock, iflags);
list_add_tail(&cq_event->list, &phba->sli4_hba.sp_asynce_work_queue);
/* Set the async event flag */
phba->hba_flag |= ASYNC_EVENT;
spin_unlock_irqrestore(&phba->hbalock, iflags);
return true;
}
/**
* lpfc_sli4_sp_handle_mbox_event - Handle a mailbox completion event
* @phba: Pointer to HBA context object.
* @cqe: Pointer to mailbox completion queue entry.
*
* This routine process a mailbox completion queue entry with mailbox
* completion event.
*
* Return: true if work posted to worker thread, otherwise false.
**/
static bool
lpfc_sli4_sp_handle_mbox_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe)
{
uint32_t mcqe_status;
MAILBOX_t *mbox, *pmbox;
struct lpfc_mqe *mqe;
struct lpfc_vport *vport;
struct lpfc_nodelist *ndlp;
struct lpfc_dmabuf *mp;
unsigned long iflags;
LPFC_MBOXQ_t *pmb;
bool workposted = false;
int rc;
/* If not a mailbox complete MCQE, out by checking mailbox consume */
if (!bf_get(lpfc_trailer_completed, mcqe))
goto out_no_mqe_complete;
/* Get the reference to the active mbox command */
spin_lock_irqsave(&phba->hbalock, iflags);
pmb = phba->sli.mbox_active;
if (unlikely(!pmb)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
"1832 No pending MBOX command to handle\n");
spin_unlock_irqrestore(&phba->hbalock, iflags);
goto out_no_mqe_complete;
}
spin_unlock_irqrestore(&phba->hbalock, iflags);
mqe = &pmb->u.mqe;
pmbox = (MAILBOX_t *)&pmb->u.mqe;
mbox = phba->mbox;
vport = pmb->vport;
/* Reset heartbeat timer */
phba->last_completion_time = jiffies;
del_timer(&phba->sli.mbox_tmo);
/* Move mbox data to caller's mailbox region, do endian swapping */
if (pmb->mbox_cmpl && mbox)
lpfc_sli_pcimem_bcopy(mbox, mqe, sizeof(struct lpfc_mqe));
/* Set the mailbox status with SLI4 range 0x4000 */
mcqe_status = bf_get(lpfc_mcqe_status, mcqe);
if (mcqe_status != MB_CQE_STATUS_SUCCESS)
bf_set(lpfc_mqe_status, mqe,
(LPFC_MBX_ERROR_RANGE | mcqe_status));
if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_MBOX_VPORT,
"MBOX dflt rpi: status:x%x rpi:x%x",
mcqe_status,
pmbox->un.varWords[0], 0);
if (mcqe_status == MB_CQE_STATUS_SUCCESS) {
mp = (struct lpfc_dmabuf *)(pmb->context1);
ndlp = (struct lpfc_nodelist *)pmb->context2;
/* Reg_LOGIN of dflt RPI was successful. Now lets get
* RID of the PPI using the same mbox buffer.
*/
lpfc_unreg_login(phba, vport->vpi,
pmbox->un.varWords[0], pmb);
pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
pmb->context1 = mp;
pmb->context2 = ndlp;
pmb->vport = vport;
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
if (rc != MBX_BUSY)
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
LOG_SLI, "0385 rc should "
"have been MBX_BUSY\n");
if (rc != MBX_NOT_FINISHED)
goto send_current_mbox;
}
}
spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
/* There is mailbox completion work to do */
spin_lock_irqsave(&phba->hbalock, iflags);
__lpfc_mbox_cmpl_put(phba, pmb);
phba->work_ha |= HA_MBATT;
spin_unlock_irqrestore(&phba->hbalock, iflags);
workposted = true;
send_current_mbox:
spin_lock_irqsave(&phba->hbalock, iflags);
/* Release the mailbox command posting token */
phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
/* Setting active mailbox pointer need to be in sync to flag clear */
phba->sli.mbox_active = NULL;
spin_unlock_irqrestore(&phba->hbalock, iflags);
/* Wake up worker thread to post the next pending mailbox command */
lpfc_worker_wake_up(phba);
out_no_mqe_complete:
if (bf_get(lpfc_trailer_consumed, mcqe))
lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq);
return workposted;
}
/**
* lpfc_sli4_sp_handle_mcqe - Process a mailbox completion queue entry
* @phba: Pointer to HBA context object.
* @cqe: Pointer to mailbox completion queue entry.
*
* This routine process a mailbox completion queue entry, it invokes the
* proper mailbox complete handling or asynchrous event handling routine
* according to the MCQE's async bit.
*
* Return: true if work posted to worker thread, otherwise false.
**/
static bool
lpfc_sli4_sp_handle_mcqe(struct lpfc_hba *phba, struct lpfc_cqe *cqe)
{
struct lpfc_mcqe mcqe;
bool workposted;
/* Copy the mailbox MCQE and convert endian order as needed */
lpfc_sli_pcimem_bcopy(cqe, &mcqe, sizeof(struct lpfc_mcqe));
/* Invoke the proper event handling routine */
if (!bf_get(lpfc_trailer_async, &mcqe))
workposted = lpfc_sli4_sp_handle_mbox_event(phba, &mcqe);
else
workposted = lpfc_sli4_sp_handle_async_event(phba, &mcqe);
return workposted;
}
/**
* lpfc_sli4_sp_handle_els_wcqe - Handle els work-queue completion event
* @phba: Pointer to HBA context object.
* @wcqe: Pointer to work-queue completion queue entry.
*
* This routine handles an ELS work-queue completion event.
*
* Return: true if work posted to worker thread, otherwise false.
**/
static bool
lpfc_sli4_sp_handle_els_wcqe(struct lpfc_hba *phba,
struct lpfc_wcqe_complete *wcqe)
{
struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
struct lpfc_iocbq *cmdiocbq;
struct lpfc_iocbq *irspiocbq;
unsigned long iflags;
bool workposted = false;
spin_lock_irqsave(&phba->hbalock, iflags);
pring->stats.iocb_event++;
/* Look up the ELS command IOCB and create pseudo response IOCB */
cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
bf_get(lpfc_wcqe_c_request_tag, wcqe));
spin_unlock_irqrestore(&phba->hbalock, iflags);
if (unlikely(!cmdiocbq)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"0386 ELS complete with no corresponding "
"cmdiocb: iotag (%d)\n",
bf_get(lpfc_wcqe_c_request_tag, wcqe));
return workposted;
}
/* Fake the irspiocbq and copy necessary response information */
irspiocbq = lpfc_sli_get_iocbq(phba);
if (!irspiocbq) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0387 Failed to allocate an iocbq\n");
return workposted;
}
lpfc_sli4_iocb_param_transfer(irspiocbq, cmdiocbq, wcqe);
/* Add the irspiocb to the response IOCB work list */
spin_lock_irqsave(&phba->hbalock, iflags);
list_add_tail(&irspiocbq->list, &phba->sli4_hba.sp_rspiocb_work_queue);
/* Indicate ELS ring attention */
phba->work_ha |= (HA_R0ATT << (4*LPFC_ELS_RING));
spin_unlock_irqrestore(&phba->hbalock, iflags);
workposted = true;
return workposted;
}
/**
* lpfc_sli4_sp_handle_rel_wcqe - Handle slow-path WQ entry consumed event
* @phba: Pointer to HBA context object.
* @wcqe: Pointer to work-queue completion queue entry.
*
* This routine handles slow-path WQ entry comsumed event by invoking the
* proper WQ release routine to the slow-path WQ.
**/
static void
lpfc_sli4_sp_handle_rel_wcqe(struct lpfc_hba *phba,
struct lpfc_wcqe_release *wcqe)
{
/* Check for the slow-path ELS work queue */
if (bf_get(lpfc_wcqe_r_wq_id, wcqe) == phba->sli4_hba.els_wq->queue_id)
lpfc_sli4_wq_release(phba->sli4_hba.els_wq,
bf_get(lpfc_wcqe_r_wqe_index, wcqe));
else
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"2579 Slow-path wqe consume event carries "
"miss-matched qid: wcqe-qid=x%x, sp-qid=x%x\n",
bf_get(lpfc_wcqe_r_wqe_index, wcqe),
phba->sli4_hba.els_wq->queue_id);
}
/**
* lpfc_sli4_sp_handle_abort_xri_wcqe - Handle a xri abort event
* @phba: Pointer to HBA context object.
* @cq: Pointer to a WQ completion queue.
* @wcqe: Pointer to work-queue completion queue entry.
*
* This routine handles an XRI abort event.
*
* Return: true if work posted to worker thread, otherwise false.
**/
static bool
lpfc_sli4_sp_handle_abort_xri_wcqe(struct lpfc_hba *phba,
struct lpfc_queue *cq,
struct sli4_wcqe_xri_aborted *wcqe)
{
bool workposted = false;
struct lpfc_cq_event *cq_event;
unsigned long iflags;
/* Allocate a new internal CQ_EVENT entry */
cq_event = lpfc_sli4_cq_event_alloc(phba);
if (!cq_event) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0602 Failed to allocate CQ_EVENT entry\n");
return false;
}
/* Move the CQE into the proper xri abort event list */
memcpy(&cq_event->cqe, wcqe, sizeof(struct sli4_wcqe_xri_aborted));
switch (cq->subtype) {
case LPFC_FCP:
spin_lock_irqsave(&phba->hbalock, iflags);
list_add_tail(&cq_event->list,
&phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
/* Set the fcp xri abort event flag */
phba->hba_flag |= FCP_XRI_ABORT_EVENT;
spin_unlock_irqrestore(&phba->hbalock, iflags);
workposted = true;
break;
case LPFC_ELS:
spin_lock_irqsave(&phba->hbalock, iflags);
list_add_tail(&cq_event->list,
&phba->sli4_hba.sp_els_xri_aborted_work_queue);
/* Set the els xri abort event flag */
phba->hba_flag |= ELS_XRI_ABORT_EVENT;
spin_unlock_irqrestore(&phba->hbalock, iflags);
workposted = true;
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0603 Invalid work queue CQE subtype (x%x)\n",
cq->subtype);
workposted = false;
break;
}
return workposted;
}
/**
* lpfc_sli4_sp_handle_wcqe - Process a work-queue completion queue entry
* @phba: Pointer to HBA context object.
* @cq: Pointer to the completion queue.
* @wcqe: Pointer to a completion queue entry.
*
* This routine process a slow-path work-queue completion queue entry.
*
* Return: true if work posted to worker thread, otherwise false.
**/
static bool
lpfc_sli4_sp_handle_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
struct lpfc_cqe *cqe)
{
struct lpfc_wcqe_complete wcqe;
bool workposted = false;
/* Copy the work queue CQE and convert endian order if needed */
lpfc_sli_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe));
/* Check and process for different type of WCQE and dispatch */
switch (bf_get(lpfc_wcqe_c_code, &wcqe)) {
case CQE_CODE_COMPL_WQE:
/* Process the WQ complete event */
workposted = lpfc_sli4_sp_handle_els_wcqe(phba,
(struct lpfc_wcqe_complete *)&wcqe);
break;
case CQE_CODE_RELEASE_WQE:
/* Process the WQ release event */
lpfc_sli4_sp_handle_rel_wcqe(phba,
(struct lpfc_wcqe_release *)&wcqe);
break;
case CQE_CODE_XRI_ABORTED:
/* Process the WQ XRI abort event */
workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
(struct sli4_wcqe_xri_aborted *)&wcqe);
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0388 Not a valid WCQE code: x%x\n",
bf_get(lpfc_wcqe_c_code, &wcqe));
break;
}
return workposted;
}
/**
* lpfc_sli4_sp_handle_rcqe - Process a receive-queue completion queue entry
* @phba: Pointer to HBA context object.
* @rcqe: Pointer to receive-queue completion queue entry.
*
* This routine process a receive-queue completion queue entry.
*
* Return: true if work posted to worker thread, otherwise false.
**/
static bool
lpfc_sli4_sp_handle_rcqe(struct lpfc_hba *phba, struct lpfc_cqe *cqe)
{
struct lpfc_rcqe rcqe;
bool workposted = false;
struct lpfc_queue *hrq = phba->sli4_hba.hdr_rq;
struct lpfc_queue *drq = phba->sli4_hba.dat_rq;
struct hbq_dmabuf *dma_buf;
uint32_t status;
unsigned long iflags;
/* Copy the receive queue CQE and convert endian order if needed */
lpfc_sli_pcimem_bcopy(cqe, &rcqe, sizeof(struct lpfc_rcqe));
lpfc_sli4_rq_release(hrq, drq);
if (bf_get(lpfc_rcqe_code, &rcqe) != CQE_CODE_RECEIVE)
goto out;
if (bf_get(lpfc_rcqe_rq_id, &rcqe) != hrq->queue_id)
goto out;
status = bf_get(lpfc_rcqe_status, &rcqe);
switch (status) {
case FC_STATUS_RQ_BUF_LEN_EXCEEDED:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2537 Receive Frame Truncated!!\n");
case FC_STATUS_RQ_SUCCESS:
spin_lock_irqsave(&phba->hbalock, iflags);
dma_buf = lpfc_sli_hbqbuf_get(&phba->hbqs[0].hbq_buffer_list);
if (!dma_buf) {
spin_unlock_irqrestore(&phba->hbalock, iflags);
goto out;
}
memcpy(&dma_buf->rcqe, &rcqe, sizeof(rcqe));
/* save off the frame for the word thread to process */
list_add_tail(&dma_buf->dbuf.list, &phba->rb_pend_list);
/* Frame received */
phba->hba_flag |= HBA_RECEIVE_BUFFER;
spin_unlock_irqrestore(&phba->hbalock, iflags);
workposted = true;
break;
case FC_STATUS_INSUFF_BUF_NEED_BUF:
case FC_STATUS_INSUFF_BUF_FRM_DISC:
/* Post more buffers if possible */
spin_lock_irqsave(&phba->hbalock, iflags);
phba->hba_flag |= HBA_POST_RECEIVE_BUFFER;
spin_unlock_irqrestore(&phba->hbalock, iflags);
workposted = true;
break;
}
out:
return workposted;
}
/**
* lpfc_sli4_sp_handle_eqe - Process a slow-path event queue entry
* @phba: Pointer to HBA context object.
* @eqe: Pointer to fast-path event queue entry.
*
* This routine process a event queue entry from the slow-path event queue.
* It will check the MajorCode and MinorCode to determine this is for a
* completion event on a completion queue, if not, an error shall be logged
* and just return. Otherwise, it will get to the corresponding completion
* queue and process all the entries on that completion queue, rearm the
* completion queue, and then return.
*
**/
static void
lpfc_sli4_sp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe)
{
struct lpfc_queue *cq = NULL, *childq, *speq;
struct lpfc_cqe *cqe;
bool workposted = false;
int ecount = 0;
uint16_t cqid;
if (bf_get(lpfc_eqe_major_code, eqe) != 0 ||
bf_get(lpfc_eqe_minor_code, eqe) != 0) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0359 Not a valid slow-path completion "
"event: majorcode=x%x, minorcode=x%x\n",
bf_get(lpfc_eqe_major_code, eqe),
bf_get(lpfc_eqe_minor_code, eqe));
return;
}
/* Get the reference to the corresponding CQ */
cqid = bf_get(lpfc_eqe_resource_id, eqe);
/* Search for completion queue pointer matching this cqid */
speq = phba->sli4_hba.sp_eq;
list_for_each_entry(childq, &speq->child_list, list) {
if (childq->queue_id == cqid) {
cq = childq;
break;
}
}
if (unlikely(!cq)) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0365 Slow-path CQ identifier (%d) does "
"not exist\n", cqid);
return;
}
/* Process all the entries to the CQ */
switch (cq->type) {
case LPFC_MCQ:
while ((cqe = lpfc_sli4_cq_get(cq))) {
workposted |= lpfc_sli4_sp_handle_mcqe(phba, cqe);
if (!(++ecount % LPFC_GET_QE_REL_INT))
lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
}
break;
case LPFC_WCQ:
while ((cqe = lpfc_sli4_cq_get(cq))) {
workposted |= lpfc_sli4_sp_handle_wcqe(phba, cq, cqe);
if (!(++ecount % LPFC_GET_QE_REL_INT))
lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
}
break;
case LPFC_RCQ:
while ((cqe = lpfc_sli4_cq_get(cq))) {
workposted |= lpfc_sli4_sp_handle_rcqe(phba, cqe);
if (!(++ecount % LPFC_GET_QE_REL_INT))
lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
}
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0370 Invalid completion queue type (%d)\n",
cq->type);
return;
}
/* Catch the no cq entry condition, log an error */
if (unlikely(ecount == 0))
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0371 No entry from the CQ: identifier "
"(x%x), type (%d)\n", cq->queue_id, cq->type);
/* In any case, flash and re-arm the RCQ */
lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM);
/* wake up worker thread if there are works to be done */
if (workposted)
lpfc_worker_wake_up(phba);
}
/**
* lpfc_sli4_fp_handle_fcp_wcqe - Process fast-path work queue completion entry
* @eqe: Pointer to fast-path completion queue entry.
*
* This routine process a fast-path work queue completion entry from fast-path
* event queue for FCP command response completion.
**/
static void
lpfc_sli4_fp_handle_fcp_wcqe(struct lpfc_hba *phba,
struct lpfc_wcqe_complete *wcqe)
{
struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_FCP_RING];
struct lpfc_iocbq *cmdiocbq;
struct lpfc_iocbq irspiocbq;
unsigned long iflags;
spin_lock_irqsave(&phba->hbalock, iflags);
pring->stats.iocb_event++;
spin_unlock_irqrestore(&phba->hbalock, iflags);
/* Check for response status */
if (unlikely(bf_get(lpfc_wcqe_c_status, wcqe))) {
/* If resource errors reported from HBA, reduce queue
* depth of the SCSI device.
*/
if ((bf_get(lpfc_wcqe_c_status, wcqe) ==
IOSTAT_LOCAL_REJECT) &&
(wcqe->parameter == IOERR_NO_RESOURCES)) {
phba->lpfc_rampdown_queue_depth(phba);
}
/* Log the error status */
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"0373 FCP complete error: status=x%x, "
"hw_status=x%x, total_data_specified=%d, "
"parameter=x%x, word3=x%x\n",
bf_get(lpfc_wcqe_c_status, wcqe),
bf_get(lpfc_wcqe_c_hw_status, wcqe),
wcqe->total_data_placed, wcqe->parameter,
wcqe->word3);
}
/* Look up the FCP command IOCB and create pseudo response IOCB */
spin_lock_irqsave(&phba->hbalock, iflags);
cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
bf_get(lpfc_wcqe_c_request_tag, wcqe));
spin_unlock_irqrestore(&phba->hbalock, iflags);
if (unlikely(!cmdiocbq)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"0374 FCP complete with no corresponding "
"cmdiocb: iotag (%d)\n",
bf_get(lpfc_wcqe_c_request_tag, wcqe));
return;
}
if (unlikely(!cmdiocbq->iocb_cmpl)) {
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"0375 FCP cmdiocb not callback function "
"iotag: (%d)\n",
bf_get(lpfc_wcqe_c_request_tag, wcqe));
return;
}
/* Fake the irspiocb and copy necessary response information */
lpfc_sli4_iocb_param_transfer(&irspiocbq, cmdiocbq, wcqe);
/* Pass the cmd_iocb and the rsp state to the upper layer */
(cmdiocbq->iocb_cmpl)(phba, cmdiocbq, &irspiocbq);
}
/**
* lpfc_sli4_fp_handle_rel_wcqe - Handle fast-path WQ entry consumed event
* @phba: Pointer to HBA context object.
* @cq: Pointer to completion queue.
* @wcqe: Pointer to work-queue completion queue entry.
*
* This routine handles an fast-path WQ entry comsumed event by invoking the
* proper WQ release routine to the slow-path WQ.
**/
static void
lpfc_sli4_fp_handle_rel_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
struct lpfc_wcqe_release *wcqe)
{
struct lpfc_queue *childwq;
bool wqid_matched = false;
uint16_t fcp_wqid;
/* Check for fast-path FCP work queue release */
fcp_wqid = bf_get(lpfc_wcqe_r_wq_id, wcqe);
list_for_each_entry(childwq, &cq->child_list, list) {
if (childwq->queue_id == fcp_wqid) {
lpfc_sli4_wq_release(childwq,
bf_get(lpfc_wcqe_r_wqe_index, wcqe));
wqid_matched = true;
break;
}
}
/* Report warning log message if no match found */
if (wqid_matched != true)
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"2580 Fast-path wqe consume event carries "
"miss-matched qid: wcqe-qid=x%x\n", fcp_wqid);
}
/**
* lpfc_sli4_fp_handle_wcqe - Process fast-path work queue completion entry
* @cq: Pointer to the completion queue.
* @eqe: Pointer to fast-path completion queue entry.
*
* This routine process a fast-path work queue completion entry from fast-path
* event queue for FCP command response completion.
**/
static int
lpfc_sli4_fp_handle_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
struct lpfc_cqe *cqe)
{
struct lpfc_wcqe_release wcqe;
bool workposted = false;
/* Copy the work queue CQE and convert endian order if needed */
lpfc_sli_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe));
/* Check and process for different type of WCQE and dispatch */
switch (bf_get(lpfc_wcqe_c_code, &wcqe)) {
case CQE_CODE_COMPL_WQE:
/* Process the WQ complete event */
lpfc_sli4_fp_handle_fcp_wcqe(phba,
(struct lpfc_wcqe_complete *)&wcqe);
break;
case CQE_CODE_RELEASE_WQE:
/* Process the WQ release event */
lpfc_sli4_fp_handle_rel_wcqe(phba, cq,
(struct lpfc_wcqe_release *)&wcqe);
break;
case CQE_CODE_XRI_ABORTED:
/* Process the WQ XRI abort event */
workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
(struct sli4_wcqe_xri_aborted *)&wcqe);
break;
default:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0144 Not a valid WCQE code: x%x\n",
bf_get(lpfc_wcqe_c_code, &wcqe));
break;
}
return workposted;
}
/**
* lpfc_sli4_fp_handle_eqe - Process a fast-path event queue entry
* @phba: Pointer to HBA context object.
* @eqe: Pointer to fast-path event queue entry.
*
* This routine process a event queue entry from the fast-path event queue.
* It will check the MajorCode and MinorCode to determine this is for a
* completion event on a completion queue, if not, an error shall be logged
* and just return. Otherwise, it will get to the corresponding completion
* queue and process all the entries on the completion queue, rearm the
* completion queue, and then return.
**/
static void
lpfc_sli4_fp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe,
uint32_t fcp_cqidx)
{
struct lpfc_queue *cq;
struct lpfc_cqe *cqe;
bool workposted = false;
uint16_t cqid;
int ecount = 0;
if (unlikely(bf_get(lpfc_eqe_major_code, eqe) != 0) ||
unlikely(bf_get(lpfc_eqe_minor_code, eqe) != 0)) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0366 Not a valid fast-path completion "
"event: majorcode=x%x, minorcode=x%x\n",
bf_get(lpfc_eqe_major_code, eqe),
bf_get(lpfc_eqe_minor_code, eqe));
return;
}
cq = phba->sli4_hba.fcp_cq[fcp_cqidx];
if (unlikely(!cq)) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0367 Fast-path completion queue does not "
"exist\n");
return;
}
/* Get the reference to the corresponding CQ */
cqid = bf_get(lpfc_eqe_resource_id, eqe);
if (unlikely(cqid != cq->queue_id)) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0368 Miss-matched fast-path completion "
"queue identifier: eqcqid=%d, fcpcqid=%d\n",
cqid, cq->queue_id);
return;
}
/* Process all the entries to the CQ */
while ((cqe = lpfc_sli4_cq_get(cq))) {
workposted |= lpfc_sli4_fp_handle_wcqe(phba, cq, cqe);
if (!(++ecount % LPFC_GET_QE_REL_INT))
lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
}
/* Catch the no cq entry condition */
if (unlikely(ecount == 0))
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0369 No entry from fast-path completion "
"queue fcpcqid=%d\n", cq->queue_id);
/* In any case, flash and re-arm the CQ */
lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM);
/* wake up worker thread if there are works to be done */
if (workposted)
lpfc_worker_wake_up(phba);
}
static void
lpfc_sli4_eq_flush(struct lpfc_hba *phba, struct lpfc_queue *eq)
{
struct lpfc_eqe *eqe;
/* walk all the EQ entries and drop on the floor */
while ((eqe = lpfc_sli4_eq_get(eq)))
;
/* Clear and re-arm the EQ */
lpfc_sli4_eq_release(eq, LPFC_QUEUE_REARM);
}
/**
* lpfc_sli4_sp_intr_handler - Slow-path interrupt handler to SLI-4 device
* @irq: Interrupt number.
* @dev_id: The device context pointer.
*
* This function is directly called from the PCI layer as an interrupt
* service routine when device with SLI-4 interface spec is enabled with
* MSI-X multi-message interrupt mode and there are slow-path events in
* the HBA. However, when the device is enabled with either MSI or Pin-IRQ
* interrupt mode, this function is called as part of the device-level
* interrupt handler. When the PCI slot is in error recovery or the HBA is
* undergoing initialization, the interrupt handler will not process the
* interrupt. The link attention and ELS ring attention events are handled
* by the worker thread. The interrupt handler signals the worker thread
* and returns for these events. This function is called without any lock
* held. It gets the hbalock to access and update SLI data structures.
*
* This function returns IRQ_HANDLED when interrupt is handled else it
* returns IRQ_NONE.
**/
irqreturn_t
lpfc_sli4_sp_intr_handler(int irq, void *dev_id)
{
struct lpfc_hba *phba;
struct lpfc_queue *speq;
struct lpfc_eqe *eqe;
unsigned long iflag;
int ecount = 0;
/*
* Get the driver's phba structure from the dev_id
*/
phba = (struct lpfc_hba *)dev_id;
if (unlikely(!phba))
return IRQ_NONE;
/* Get to the EQ struct associated with this vector */
speq = phba->sli4_hba.sp_eq;
/* Check device state for handling interrupt */
if (unlikely(lpfc_intr_state_check(phba))) {
/* Check again for link_state with lock held */
spin_lock_irqsave(&phba->hbalock, iflag);
if (phba->link_state < LPFC_LINK_DOWN)
/* Flush, clear interrupt, and rearm the EQ */
lpfc_sli4_eq_flush(phba, speq);
spin_unlock_irqrestore(&phba->hbalock, iflag);
return IRQ_NONE;
}
/*
* Process all the event on FCP slow-path EQ
*/
while ((eqe = lpfc_sli4_eq_get(speq))) {
lpfc_sli4_sp_handle_eqe(phba, eqe);
if (!(++ecount % LPFC_GET_QE_REL_INT))
lpfc_sli4_eq_release(speq, LPFC_QUEUE_NOARM);
}
/* Always clear and re-arm the slow-path EQ */
lpfc_sli4_eq_release(speq, LPFC_QUEUE_REARM);
/* Catch the no cq entry condition */
if (unlikely(ecount == 0)) {
if (phba->intr_type == MSIX)
/* MSI-X treated interrupt served as no EQ share INT */
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"0357 MSI-X interrupt with no EQE\n");
else
/* Non MSI-X treated on interrupt as EQ share INT */
return IRQ_NONE;
}
return IRQ_HANDLED;
} /* lpfc_sli4_sp_intr_handler */
/**
* lpfc_sli4_fp_intr_handler - Fast-path interrupt handler to SLI-4 device
* @irq: Interrupt number.
* @dev_id: The device context pointer.
*
* This function is directly called from the PCI layer as an interrupt
* service routine when device with SLI-4 interface spec is enabled with
* MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB
* ring event in the HBA. However, when the device is enabled with either
* MSI or Pin-IRQ interrupt mode, this function is called as part of the
* device-level interrupt handler. When the PCI slot is in error recovery
* or the HBA is undergoing initialization, the interrupt handler will not
* process the interrupt. The SCSI FCP fast-path ring event are handled in
* the intrrupt context. This function is called without any lock held.
* It gets the hbalock to access and update SLI data structures. Note that,
* the FCP EQ to FCP CQ are one-to-one map such that the FCP EQ index is
* equal to that of FCP CQ index.
*
* This function returns IRQ_HANDLED when interrupt is handled else it
* returns IRQ_NONE.
**/
irqreturn_t
lpfc_sli4_fp_intr_handler(int irq, void *dev_id)
{
struct lpfc_hba *phba;
struct lpfc_fcp_eq_hdl *fcp_eq_hdl;
struct lpfc_queue *fpeq;
struct lpfc_eqe *eqe;
unsigned long iflag;
int ecount = 0;
uint32_t fcp_eqidx;
/* Get the driver's phba structure from the dev_id */
fcp_eq_hdl = (struct lpfc_fcp_eq_hdl *)dev_id;
phba = fcp_eq_hdl->phba;
fcp_eqidx = fcp_eq_hdl->idx;
if (unlikely(!phba))
return IRQ_NONE;
/* Get to the EQ struct associated with this vector */
fpeq = phba->sli4_hba.fp_eq[fcp_eqidx];
/* Check device state for handling interrupt */
if (unlikely(lpfc_intr_state_check(phba))) {
/* Check again for link_state with lock held */
spin_lock_irqsave(&phba->hbalock, iflag);
if (phba->link_state < LPFC_LINK_DOWN)
/* Flush, clear interrupt, and rearm the EQ */
lpfc_sli4_eq_flush(phba, fpeq);
spin_unlock_irqrestore(&phba->hbalock, iflag);
return IRQ_NONE;
}
/*
* Process all the event on FCP fast-path EQ
*/
while ((eqe = lpfc_sli4_eq_get(fpeq))) {
lpfc_sli4_fp_handle_eqe(phba, eqe, fcp_eqidx);
if (!(++ecount % LPFC_GET_QE_REL_INT))
lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_NOARM);
}
/* Always clear and re-arm the fast-path EQ */
lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_REARM);
if (unlikely(ecount == 0)) {
if (phba->intr_type == MSIX)
/* MSI-X treated interrupt served as no EQ share INT */
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"0358 MSI-X interrupt with no EQE\n");
else
/* Non MSI-X treated on interrupt as EQ share INT */
return IRQ_NONE;
}
return IRQ_HANDLED;
} /* lpfc_sli4_fp_intr_handler */
/**
* lpfc_sli4_intr_handler - Device-level interrupt handler for SLI-4 device
* @irq: Interrupt number.
* @dev_id: The device context pointer.
*
* This function is the device-level interrupt handler to device with SLI-4
* interface spec, called from the PCI layer when either MSI or Pin-IRQ
* interrupt mode is enabled and there is an event in the HBA which requires
* driver attention. This function invokes the slow-path interrupt attention
* handling function and fast-path interrupt attention handling function in
* turn to process the relevant HBA attention events. This function is called
* without any lock held. It gets the hbalock to access and update SLI data
* structures.
*
* This function returns IRQ_HANDLED when interrupt is handled, else it
* returns IRQ_NONE.
**/
irqreturn_t
lpfc_sli4_intr_handler(int irq, void *dev_id)
{
struct lpfc_hba *phba;
irqreturn_t sp_irq_rc, fp_irq_rc;
bool fp_handled = false;
uint32_t fcp_eqidx;
/* Get the driver's phba structure from the dev_id */
phba = (struct lpfc_hba *)dev_id;
if (unlikely(!phba))
return IRQ_NONE;
/*
* Invokes slow-path host attention interrupt handling as appropriate.
*/
sp_irq_rc = lpfc_sli4_sp_intr_handler(irq, dev_id);
/*
* Invoke fast-path host attention interrupt handling as appropriate.
*/
for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
fp_irq_rc = lpfc_sli4_fp_intr_handler(irq,
&phba->sli4_hba.fcp_eq_hdl[fcp_eqidx]);
if (fp_irq_rc == IRQ_HANDLED)
fp_handled |= true;
}
return (fp_handled == true) ? IRQ_HANDLED : sp_irq_rc;
} /* lpfc_sli4_intr_handler */
/**
* lpfc_sli4_queue_free - free a queue structure and associated memory
* @queue: The queue structure to free.
*
* This function frees a queue structure and the DMAable memeory used for
* the host resident queue. This function must be called after destroying the
* queue on the HBA.
**/
void
lpfc_sli4_queue_free(struct lpfc_queue *queue)
{
struct lpfc_dmabuf *dmabuf;
if (!queue)
return;
while (!list_empty(&queue->page_list)) {
list_remove_head(&queue->page_list, dmabuf, struct lpfc_dmabuf,
list);
dma_free_coherent(&queue->phba->pcidev->dev, PAGE_SIZE,
dmabuf->virt, dmabuf->phys);
kfree(dmabuf);
}
kfree(queue);
return;
}
/**
* lpfc_sli4_queue_alloc - Allocate and initialize a queue structure
* @phba: The HBA that this queue is being created on.
* @entry_size: The size of each queue entry for this queue.
* @entry count: The number of entries that this queue will handle.
*
* This function allocates a queue structure and the DMAable memory used for
* the host resident queue. This function must be called before creating the
* queue on the HBA.
**/
struct lpfc_queue *
lpfc_sli4_queue_alloc(struct lpfc_hba *phba, uint32_t entry_size,
uint32_t entry_count)
{
struct lpfc_queue *queue;
struct lpfc_dmabuf *dmabuf;
int x, total_qe_count;
void *dma_pointer;
queue = kzalloc(sizeof(struct lpfc_queue) +
(sizeof(union sli4_qe) * entry_count), GFP_KERNEL);
if (!queue)
return NULL;
queue->page_count = (PAGE_ALIGN(entry_size * entry_count))/PAGE_SIZE;
INIT_LIST_HEAD(&queue->list);
INIT_LIST_HEAD(&queue->page_list);
INIT_LIST_HEAD(&queue->child_list);
for (x = 0, total_qe_count = 0; x < queue->page_count; x++) {
dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
if (!dmabuf)
goto out_fail;
dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
PAGE_SIZE, &dmabuf->phys,
GFP_KERNEL);
if (!dmabuf->virt) {
kfree(dmabuf);
goto out_fail;
}
memset(dmabuf->virt, 0, PAGE_SIZE);
dmabuf->buffer_tag = x;
list_add_tail(&dmabuf->list, &queue->page_list);
/* initialize queue's entry array */
dma_pointer = dmabuf->virt;
for (; total_qe_count < entry_count &&
dma_pointer < (PAGE_SIZE + dmabuf->virt);
total_qe_count++, dma_pointer += entry_size) {
queue->qe[total_qe_count].address = dma_pointer;
}
}
queue->entry_size = entry_size;
queue->entry_count = entry_count;
queue->phba = phba;
return queue;
out_fail:
lpfc_sli4_queue_free(queue);
return NULL;
}
/**
* lpfc_eq_create - Create an Event Queue on the HBA
* @phba: HBA structure that indicates port to create a queue on.
* @eq: The queue structure to use to create the event queue.
* @imax: The maximum interrupt per second limit.
*
* This function creates an event queue, as detailed in @eq, on a port,
* described by @phba by sending an EQ_CREATE mailbox command to the HBA.
*
* The @phba struct is used to send mailbox command to HBA. The @eq struct
* is used to get the entry count and entry size that are necessary to
* determine the number of pages to allocate and use for this queue. This
* function will send the EQ_CREATE mailbox command to the HBA to setup the
* event queue. This function is asynchronous and will wait for the mailbox
* command to finish before continuing.
*
* On success this function will return a zero. If unable to allocate enough
* memory this function will return ENOMEM. If the queue create mailbox command
* fails this function will return ENXIO.
**/
uint32_t
lpfc_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint16_t imax)
{
struct lpfc_mbx_eq_create *eq_create;
LPFC_MBOXQ_t *mbox;
int rc, length, status = 0;
struct lpfc_dmabuf *dmabuf;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
uint16_t dmult;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
length = (sizeof(struct lpfc_mbx_eq_create) -
sizeof(struct lpfc_sli4_cfg_mhdr));
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
LPFC_MBOX_OPCODE_EQ_CREATE,
length, LPFC_SLI4_MBX_EMBED);
eq_create = &mbox->u.mqe.un.eq_create;
bf_set(lpfc_mbx_eq_create_num_pages, &eq_create->u.request,
eq->page_count);
bf_set(lpfc_eq_context_size, &eq_create->u.request.context,
LPFC_EQE_SIZE);
bf_set(lpfc_eq_context_valid, &eq_create->u.request.context, 1);
/* Calculate delay multiper from maximum interrupt per second */
dmult = LPFC_DMULT_CONST/imax - 1;
bf_set(lpfc_eq_context_delay_multi, &eq_create->u.request.context,
dmult);
switch (eq->entry_count) {
default:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0360 Unsupported EQ count. (%d)\n",
eq->entry_count);
if (eq->entry_count < 256)
return -EINVAL;
/* otherwise default to smallest count (drop through) */
case 256:
bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
LPFC_EQ_CNT_256);
break;
case 512:
bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
LPFC_EQ_CNT_512);
break;
case 1024:
bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
LPFC_EQ_CNT_1024);
break;
case 2048:
bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
LPFC_EQ_CNT_2048);
break;
case 4096:
bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
LPFC_EQ_CNT_4096);
break;
}
list_for_each_entry(dmabuf, &eq->page_list, list) {
eq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
putPaddrLow(dmabuf->phys);
eq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
putPaddrHigh(dmabuf->phys);
}
mbox->vport = phba->pport;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mbox->context1 = NULL;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
shdr = (union lpfc_sli4_cfg_shdr *) &eq_create->header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2500 EQ_CREATE mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
status = -ENXIO;
}
eq->type = LPFC_EQ;
eq->subtype = LPFC_NONE;
eq->queue_id = bf_get(lpfc_mbx_eq_create_q_id, &eq_create->u.response);
if (eq->queue_id == 0xFFFF)
status = -ENXIO;
eq->host_index = 0;
eq->hba_index = 0;
if (rc != MBX_TIMEOUT)
mempool_free(mbox, phba->mbox_mem_pool);
return status;
}
/**
* lpfc_cq_create - Create a Completion Queue on the HBA
* @phba: HBA structure that indicates port to create a queue on.
* @cq: The queue structure to use to create the completion queue.
* @eq: The event queue to bind this completion queue to.
*
* This function creates a completion queue, as detailed in @wq, on a port,
* described by @phba by sending a CQ_CREATE mailbox command to the HBA.
*
* The @phba struct is used to send mailbox command to HBA. The @cq struct
* is used to get the entry count and entry size that are necessary to
* determine the number of pages to allocate and use for this queue. The @eq
* is used to indicate which event queue to bind this completion queue to. This
* function will send the CQ_CREATE mailbox command to the HBA to setup the
* completion queue. This function is asynchronous and will wait for the mailbox
* command to finish before continuing.
*
* On success this function will return a zero. If unable to allocate enough
* memory this function will return ENOMEM. If the queue create mailbox command
* fails this function will return ENXIO.
**/
uint32_t
lpfc_cq_create(struct lpfc_hba *phba, struct lpfc_queue *cq,
struct lpfc_queue *eq, uint32_t type, uint32_t subtype)
{
struct lpfc_mbx_cq_create *cq_create;
struct lpfc_dmabuf *dmabuf;
LPFC_MBOXQ_t *mbox;
int rc, length, status = 0;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
length = (sizeof(struct lpfc_mbx_cq_create) -
sizeof(struct lpfc_sli4_cfg_mhdr));
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
LPFC_MBOX_OPCODE_CQ_CREATE,
length, LPFC_SLI4_MBX_EMBED);
cq_create = &mbox->u.mqe.un.cq_create;
bf_set(lpfc_mbx_cq_create_num_pages, &cq_create->u.request,
cq->page_count);
bf_set(lpfc_cq_context_event, &cq_create->u.request.context, 1);
bf_set(lpfc_cq_context_valid, &cq_create->u.request.context, 1);
bf_set(lpfc_cq_eq_id, &cq_create->u.request.context, eq->queue_id);
switch (cq->entry_count) {
default:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0361 Unsupported CQ count. (%d)\n",
cq->entry_count);
if (cq->entry_count < 256)
return -EINVAL;
/* otherwise default to smallest count (drop through) */
case 256:
bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
LPFC_CQ_CNT_256);
break;
case 512:
bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
LPFC_CQ_CNT_512);
break;
case 1024:
bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
LPFC_CQ_CNT_1024);
break;
}
list_for_each_entry(dmabuf, &cq->page_list, list) {
cq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
putPaddrLow(dmabuf->phys);
cq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
putPaddrHigh(dmabuf->phys);
}
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
/* The IOCTL status is embedded in the mailbox subheader. */
shdr = (union lpfc_sli4_cfg_shdr *) &cq_create->header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2501 CQ_CREATE mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
status = -ENXIO;
goto out;
}
cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response);
if (cq->queue_id == 0xFFFF) {
status = -ENXIO;
goto out;
}
/* link the cq onto the parent eq child list */
list_add_tail(&cq->list, &eq->child_list);
/* Set up completion queue's type and subtype */
cq->type = type;
cq->subtype = subtype;
cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response);
cq->host_index = 0;
cq->hba_index = 0;
out:
if (rc != MBX_TIMEOUT)
mempool_free(mbox, phba->mbox_mem_pool);
return status;
}
/**
* lpfc_mq_create - Create a mailbox Queue on the HBA
* @phba: HBA structure that indicates port to create a queue on.
* @mq: The queue structure to use to create the mailbox queue.
*
* This function creates a mailbox queue, as detailed in @mq, on a port,
* described by @phba by sending a MQ_CREATE mailbox command to the HBA.
*
* The @phba struct is used to send mailbox command to HBA. The @cq struct
* is used to get the entry count and entry size that are necessary to
* determine the number of pages to allocate and use for this queue. This
* function will send the MQ_CREATE mailbox command to the HBA to setup the
* mailbox queue. This function is asynchronous and will wait for the mailbox
* command to finish before continuing.
*
* On success this function will return a zero. If unable to allocate enough
* memory this function will return ENOMEM. If the queue create mailbox command
* fails this function will return ENXIO.
**/
uint32_t
lpfc_mq_create(struct lpfc_hba *phba, struct lpfc_queue *mq,
struct lpfc_queue *cq, uint32_t subtype)
{
struct lpfc_mbx_mq_create *mq_create;
struct lpfc_dmabuf *dmabuf;
LPFC_MBOXQ_t *mbox;
int rc, length, status = 0;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
length = (sizeof(struct lpfc_mbx_mq_create) -
sizeof(struct lpfc_sli4_cfg_mhdr));
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
LPFC_MBOX_OPCODE_MQ_CREATE,
length, LPFC_SLI4_MBX_EMBED);
mq_create = &mbox->u.mqe.un.mq_create;
bf_set(lpfc_mbx_mq_create_num_pages, &mq_create->u.request,
mq->page_count);
bf_set(lpfc_mq_context_cq_id, &mq_create->u.request.context,
cq->queue_id);
bf_set(lpfc_mq_context_valid, &mq_create->u.request.context, 1);
switch (mq->entry_count) {
default:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0362 Unsupported MQ count. (%d)\n",
mq->entry_count);
if (mq->entry_count < 16)
return -EINVAL;
/* otherwise default to smallest count (drop through) */
case 16:
bf_set(lpfc_mq_context_count, &mq_create->u.request.context,
LPFC_MQ_CNT_16);
break;
case 32:
bf_set(lpfc_mq_context_count, &mq_create->u.request.context,
LPFC_MQ_CNT_32);
break;
case 64:
bf_set(lpfc_mq_context_count, &mq_create->u.request.context,
LPFC_MQ_CNT_64);
break;
case 128:
bf_set(lpfc_mq_context_count, &mq_create->u.request.context,
LPFC_MQ_CNT_128);
break;
}
list_for_each_entry(dmabuf, &mq->page_list, list) {
mq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
putPaddrLow(dmabuf->phys);
mq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
putPaddrHigh(dmabuf->phys);
}
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
/* The IOCTL status is embedded in the mailbox subheader. */
shdr = (union lpfc_sli4_cfg_shdr *) &mq_create->header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2502 MQ_CREATE mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
status = -ENXIO;
goto out;
}
mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id, &mq_create->u.response);
if (mq->queue_id == 0xFFFF) {
status = -ENXIO;
goto out;
}
mq->type = LPFC_MQ;
mq->subtype = subtype;
mq->host_index = 0;
mq->hba_index = 0;
/* link the mq onto the parent cq child list */
list_add_tail(&mq->list, &cq->child_list);
out:
if (rc != MBX_TIMEOUT)
mempool_free(mbox, phba->mbox_mem_pool);
return status;
}
/**
* lpfc_wq_create - Create a Work Queue on the HBA
* @phba: HBA structure that indicates port to create a queue on.
* @wq: The queue structure to use to create the work queue.
* @cq: The completion queue to bind this work queue to.
* @subtype: The subtype of the work queue indicating its functionality.
*
* This function creates a work queue, as detailed in @wq, on a port, described
* by @phba by sending a WQ_CREATE mailbox command to the HBA.
*
* The @phba struct is used to send mailbox command to HBA. The @wq struct
* is used to get the entry count and entry size that are necessary to
* determine the number of pages to allocate and use for this queue. The @cq
* is used to indicate which completion queue to bind this work queue to. This
* function will send the WQ_CREATE mailbox command to the HBA to setup the
* work queue. This function is asynchronous and will wait for the mailbox
* command to finish before continuing.
*
* On success this function will return a zero. If unable to allocate enough
* memory this function will return ENOMEM. If the queue create mailbox command
* fails this function will return ENXIO.
**/
uint32_t
lpfc_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq,
struct lpfc_queue *cq, uint32_t subtype)
{
struct lpfc_mbx_wq_create *wq_create;
struct lpfc_dmabuf *dmabuf;
LPFC_MBOXQ_t *mbox;
int rc, length, status = 0;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
length = (sizeof(struct lpfc_mbx_wq_create) -
sizeof(struct lpfc_sli4_cfg_mhdr));
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
LPFC_MBOX_OPCODE_FCOE_WQ_CREATE,
length, LPFC_SLI4_MBX_EMBED);
wq_create = &mbox->u.mqe.un.wq_create;
bf_set(lpfc_mbx_wq_create_num_pages, &wq_create->u.request,
wq->page_count);
bf_set(lpfc_mbx_wq_create_cq_id, &wq_create->u.request,
cq->queue_id);
list_for_each_entry(dmabuf, &wq->page_list, list) {
wq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
putPaddrLow(dmabuf->phys);
wq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
putPaddrHigh(dmabuf->phys);
}
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
/* The IOCTL status is embedded in the mailbox subheader. */
shdr = (union lpfc_sli4_cfg_shdr *) &wq_create->header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2503 WQ_CREATE mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
status = -ENXIO;
goto out;
}
wq->queue_id = bf_get(lpfc_mbx_wq_create_q_id, &wq_create->u.response);
if (wq->queue_id == 0xFFFF) {
status = -ENXIO;
goto out;
}
wq->type = LPFC_WQ;
wq->subtype = subtype;
wq->host_index = 0;
wq->hba_index = 0;
/* link the wq onto the parent cq child list */
list_add_tail(&wq->list, &cq->child_list);
out:
if (rc != MBX_TIMEOUT)
mempool_free(mbox, phba->mbox_mem_pool);
return status;
}
/**
* lpfc_rq_create - Create a Receive Queue on the HBA
* @phba: HBA structure that indicates port to create a queue on.
* @hrq: The queue structure to use to create the header receive queue.
* @drq: The queue structure to use to create the data receive queue.
* @cq: The completion queue to bind this work queue to.
*
* This function creates a receive buffer queue pair , as detailed in @hrq and
* @drq, on a port, described by @phba by sending a RQ_CREATE mailbox command
* to the HBA.
*
* The @phba struct is used to send mailbox command to HBA. The @drq and @hrq
* struct is used to get the entry count that is necessary to determine the
* number of pages to use for this queue. The @cq is used to indicate which
* completion queue to bind received buffers that are posted to these queues to.
* This function will send the RQ_CREATE mailbox command to the HBA to setup the
* receive queue pair. This function is asynchronous and will wait for the
* mailbox command to finish before continuing.
*
* On success this function will return a zero. If unable to allocate enough
* memory this function will return ENOMEM. If the queue create mailbox command
* fails this function will return ENXIO.
**/
uint32_t
lpfc_rq_create(struct lpfc_hba *phba, struct lpfc_queue *hrq,
struct lpfc_queue *drq, struct lpfc_queue *cq, uint32_t subtype)
{
struct lpfc_mbx_rq_create *rq_create;
struct lpfc_dmabuf *dmabuf;
LPFC_MBOXQ_t *mbox;
int rc, length, status = 0;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
if (hrq->entry_count != drq->entry_count)
return -EINVAL;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
length = (sizeof(struct lpfc_mbx_rq_create) -
sizeof(struct lpfc_sli4_cfg_mhdr));
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
LPFC_MBOX_OPCODE_FCOE_RQ_CREATE,
length, LPFC_SLI4_MBX_EMBED);
rq_create = &mbox->u.mqe.un.rq_create;
switch (hrq->entry_count) {
default:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2535 Unsupported RQ count. (%d)\n",
hrq->entry_count);
if (hrq->entry_count < 512)
return -EINVAL;
/* otherwise default to smallest count (drop through) */
case 512:
bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
LPFC_RQ_RING_SIZE_512);
break;
case 1024:
bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
LPFC_RQ_RING_SIZE_1024);
break;
case 2048:
bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
LPFC_RQ_RING_SIZE_2048);
break;
case 4096:
bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
LPFC_RQ_RING_SIZE_4096);
break;
}
bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context,
cq->queue_id);
bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request,
hrq->page_count);
bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context,
LPFC_HDR_BUF_SIZE);
list_for_each_entry(dmabuf, &hrq->page_list, list) {
rq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
putPaddrLow(dmabuf->phys);
rq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
putPaddrHigh(dmabuf->phys);
}
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
/* The IOCTL status is embedded in the mailbox subheader. */
shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2504 RQ_CREATE mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
status = -ENXIO;
goto out;
}
hrq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
if (hrq->queue_id == 0xFFFF) {
status = -ENXIO;
goto out;
}
hrq->type = LPFC_HRQ;
hrq->subtype = subtype;
hrq->host_index = 0;
hrq->hba_index = 0;
/* now create the data queue */
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
LPFC_MBOX_OPCODE_FCOE_RQ_CREATE,
length, LPFC_SLI4_MBX_EMBED);
switch (drq->entry_count) {
default:
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2536 Unsupported RQ count. (%d)\n",
drq->entry_count);
if (drq->entry_count < 512)
return -EINVAL;
/* otherwise default to smallest count (drop through) */
case 512:
bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
LPFC_RQ_RING_SIZE_512);
break;
case 1024:
bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
LPFC_RQ_RING_SIZE_1024);
break;
case 2048:
bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
LPFC_RQ_RING_SIZE_2048);
break;
case 4096:
bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
LPFC_RQ_RING_SIZE_4096);
break;
}
bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context,
cq->queue_id);
bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request,
drq->page_count);
bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context,
LPFC_DATA_BUF_SIZE);
list_for_each_entry(dmabuf, &drq->page_list, list) {
rq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
putPaddrLow(dmabuf->phys);
rq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
putPaddrHigh(dmabuf->phys);
}
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
/* The IOCTL status is embedded in the mailbox subheader. */
shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status || rc) {
status = -ENXIO;
goto out;
}
drq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
if (drq->queue_id == 0xFFFF) {
status = -ENXIO;
goto out;
}
drq->type = LPFC_DRQ;
drq->subtype = subtype;
drq->host_index = 0;
drq->hba_index = 0;
/* link the header and data RQs onto the parent cq child list */
list_add_tail(&hrq->list, &cq->child_list);
list_add_tail(&drq->list, &cq->child_list);
out:
if (rc != MBX_TIMEOUT)
mempool_free(mbox, phba->mbox_mem_pool);
return status;
}
/**
* lpfc_eq_destroy - Destroy an event Queue on the HBA
* @eq: The queue structure associated with the queue to destroy.
*
* This function destroys a queue, as detailed in @eq by sending an mailbox
* command, specific to the type of queue, to the HBA.
*
* The @eq struct is used to get the queue ID of the queue to destroy.
*
* On success this function will return a zero. If the queue destroy mailbox
* command fails this function will return ENXIO.
**/
uint32_t
lpfc_eq_destroy(struct lpfc_hba *phba, struct lpfc_queue *eq)
{
LPFC_MBOXQ_t *mbox;
int rc, length, status = 0;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
if (!eq)
return -ENODEV;
mbox = mempool_alloc(eq->phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
length = (sizeof(struct lpfc_mbx_eq_destroy) -
sizeof(struct lpfc_sli4_cfg_mhdr));
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
LPFC_MBOX_OPCODE_EQ_DESTROY,
length, LPFC_SLI4_MBX_EMBED);
bf_set(lpfc_mbx_eq_destroy_q_id, &mbox->u.mqe.un.eq_destroy.u.request,
eq->queue_id);
mbox->vport = eq->phba->pport;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox(eq->phba, mbox, MBX_POLL);
/* The IOCTL status is embedded in the mailbox subheader. */
shdr = (union lpfc_sli4_cfg_shdr *)
&mbox->u.mqe.un.eq_destroy.header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2505 EQ_DESTROY mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
status = -ENXIO;
}
/* Remove eq from any list */
list_del_init(&eq->list);
if (rc != MBX_TIMEOUT)
mempool_free(mbox, eq->phba->mbox_mem_pool);
return status;
}
/**
* lpfc_cq_destroy - Destroy a Completion Queue on the HBA
* @cq: The queue structure associated with the queue to destroy.
*
* This function destroys a queue, as detailed in @cq by sending an mailbox
* command, specific to the type of queue, to the HBA.
*
* The @cq struct is used to get the queue ID of the queue to destroy.
*
* On success this function will return a zero. If the queue destroy mailbox
* command fails this function will return ENXIO.
**/
uint32_t
lpfc_cq_destroy(struct lpfc_hba *phba, struct lpfc_queue *cq)
{
LPFC_MBOXQ_t *mbox;
int rc, length, status = 0;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
if (!cq)
return -ENODEV;
mbox = mempool_alloc(cq->phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
length = (sizeof(struct lpfc_mbx_cq_destroy) -
sizeof(struct lpfc_sli4_cfg_mhdr));
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
LPFC_MBOX_OPCODE_CQ_DESTROY,
length, LPFC_SLI4_MBX_EMBED);
bf_set(lpfc_mbx_cq_destroy_q_id, &mbox->u.mqe.un.cq_destroy.u.request,
cq->queue_id);
mbox->vport = cq->phba->pport;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox(cq->phba, mbox, MBX_POLL);
/* The IOCTL status is embedded in the mailbox subheader. */
shdr = (union lpfc_sli4_cfg_shdr *)
&mbox->u.mqe.un.wq_create.header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2506 CQ_DESTROY mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
status = -ENXIO;
}
/* Remove cq from any list */
list_del_init(&cq->list);
if (rc != MBX_TIMEOUT)
mempool_free(mbox, cq->phba->mbox_mem_pool);
return status;
}
/**
* lpfc_mq_destroy - Destroy a Mailbox Queue on the HBA
* @qm: The queue structure associated with the queue to destroy.
*
* This function destroys a queue, as detailed in @mq by sending an mailbox
* command, specific to the type of queue, to the HBA.
*
* The @mq struct is used to get the queue ID of the queue to destroy.
*
* On success this function will return a zero. If the queue destroy mailbox
* command fails this function will return ENXIO.
**/
uint32_t
lpfc_mq_destroy(struct lpfc_hba *phba, struct lpfc_queue *mq)
{
LPFC_MBOXQ_t *mbox;
int rc, length, status = 0;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
if (!mq)
return -ENODEV;
mbox = mempool_alloc(mq->phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
length = (sizeof(struct lpfc_mbx_mq_destroy) -
sizeof(struct lpfc_sli4_cfg_mhdr));
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
LPFC_MBOX_OPCODE_MQ_DESTROY,
length, LPFC_SLI4_MBX_EMBED);
bf_set(lpfc_mbx_mq_destroy_q_id, &mbox->u.mqe.un.mq_destroy.u.request,
mq->queue_id);
mbox->vport = mq->phba->pport;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox(mq->phba, mbox, MBX_POLL);
/* The IOCTL status is embedded in the mailbox subheader. */
shdr = (union lpfc_sli4_cfg_shdr *)
&mbox->u.mqe.un.mq_destroy.header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2507 MQ_DESTROY mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
status = -ENXIO;
}
/* Remove mq from any list */
list_del_init(&mq->list);
if (rc != MBX_TIMEOUT)
mempool_free(mbox, mq->phba->mbox_mem_pool);
return status;
}
/**
* lpfc_wq_destroy - Destroy a Work Queue on the HBA
* @wq: The queue structure associated with the queue to destroy.
*
* This function destroys a queue, as detailed in @wq by sending an mailbox
* command, specific to the type of queue, to the HBA.
*
* The @wq struct is used to get the queue ID of the queue to destroy.
*
* On success this function will return a zero. If the queue destroy mailbox
* command fails this function will return ENXIO.
**/
uint32_t
lpfc_wq_destroy(struct lpfc_hba *phba, struct lpfc_queue *wq)
{
LPFC_MBOXQ_t *mbox;
int rc, length, status = 0;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
if (!wq)
return -ENODEV;
mbox = mempool_alloc(wq->phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
length = (sizeof(struct lpfc_mbx_wq_destroy) -
sizeof(struct lpfc_sli4_cfg_mhdr));
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
LPFC_MBOX_OPCODE_FCOE_WQ_DESTROY,
length, LPFC_SLI4_MBX_EMBED);
bf_set(lpfc_mbx_wq_destroy_q_id, &mbox->u.mqe.un.wq_destroy.u.request,
wq->queue_id);
mbox->vport = wq->phba->pport;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox(wq->phba, mbox, MBX_POLL);
shdr = (union lpfc_sli4_cfg_shdr *)
&mbox->u.mqe.un.wq_destroy.header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2508 WQ_DESTROY mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
status = -ENXIO;
}
/* Remove wq from any list */
list_del_init(&wq->list);
if (rc != MBX_TIMEOUT)
mempool_free(mbox, wq->phba->mbox_mem_pool);
return status;
}
/**
* lpfc_rq_destroy - Destroy a Receive Queue on the HBA
* @rq: The queue structure associated with the queue to destroy.
*
* This function destroys a queue, as detailed in @rq by sending an mailbox
* command, specific to the type of queue, to the HBA.
*
* The @rq struct is used to get the queue ID of the queue to destroy.
*
* On success this function will return a zero. If the queue destroy mailbox
* command fails this function will return ENXIO.
**/
uint32_t
lpfc_rq_destroy(struct lpfc_hba *phba, struct lpfc_queue *hrq,
struct lpfc_queue *drq)
{
LPFC_MBOXQ_t *mbox;
int rc, length, status = 0;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
if (!hrq || !drq)
return -ENODEV;
mbox = mempool_alloc(hrq->phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
length = (sizeof(struct lpfc_mbx_rq_destroy) -
sizeof(struct mbox_header));
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
LPFC_MBOX_OPCODE_FCOE_RQ_DESTROY,
length, LPFC_SLI4_MBX_EMBED);
bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request,
hrq->queue_id);
mbox->vport = hrq->phba->pport;
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox(hrq->phba, mbox, MBX_POLL);
/* The IOCTL status is embedded in the mailbox subheader. */
shdr = (union lpfc_sli4_cfg_shdr *)
&mbox->u.mqe.un.rq_destroy.header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2509 RQ_DESTROY mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
if (rc != MBX_TIMEOUT)
mempool_free(mbox, hrq->phba->mbox_mem_pool);
return -ENXIO;
}
bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request,
drq->queue_id);
rc = lpfc_sli_issue_mbox(drq->phba, mbox, MBX_POLL);
shdr = (union lpfc_sli4_cfg_shdr *)
&mbox->u.mqe.un.rq_destroy.header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2510 RQ_DESTROY mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
status = -ENXIO;
}
list_del_init(&hrq->list);
list_del_init(&drq->list);
if (rc != MBX_TIMEOUT)
mempool_free(mbox, hrq->phba->mbox_mem_pool);
return status;
}
/**
* lpfc_sli4_post_sgl - Post scatter gather list for an XRI to HBA
* @phba: The virtual port for which this call being executed.
* @pdma_phys_addr0: Physical address of the 1st SGL page.
* @pdma_phys_addr1: Physical address of the 2nd SGL page.
* @xritag: the xritag that ties this io to the SGL pages.
*
* This routine will post the sgl pages for the IO that has the xritag
* that is in the iocbq structure. The xritag is assigned during iocbq
* creation and persists for as long as the driver is loaded.
* if the caller has fewer than 256 scatter gather segments to map then
* pdma_phys_addr1 should be 0.
* If the caller needs to map more than 256 scatter gather segment then
* pdma_phys_addr1 should be a valid physical address.
* physical address for SGLs must be 64 byte aligned.
* If you are going to map 2 SGL's then the first one must have 256 entries
* the second sgl can have between 1 and 256 entries.
*
* Return codes:
* 0 - Success
* -ENXIO, -ENOMEM - Failure
**/
int
lpfc_sli4_post_sgl(struct lpfc_hba *phba,
dma_addr_t pdma_phys_addr0,
dma_addr_t pdma_phys_addr1,
uint16_t xritag)
{
struct lpfc_mbx_post_sgl_pages *post_sgl_pages;
LPFC_MBOXQ_t *mbox;
int rc;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
if (xritag == NO_XRI) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"0364 Invalid param:\n");
return -EINVAL;
}
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES,
sizeof(struct lpfc_mbx_post_sgl_pages) -
sizeof(struct mbox_header), LPFC_SLI4_MBX_EMBED);
post_sgl_pages = (struct lpfc_mbx_post_sgl_pages *)
&mbox->u.mqe.un.post_sgl_pages;
bf_set(lpfc_post_sgl_pages_xri, post_sgl_pages, xritag);
bf_set(lpfc_post_sgl_pages_xricnt, post_sgl_pages, 1);
post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_lo =
cpu_to_le32(putPaddrLow(pdma_phys_addr0));
post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_hi =
cpu_to_le32(putPaddrHigh(pdma_phys_addr0));
post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_lo =
cpu_to_le32(putPaddrLow(pdma_phys_addr1));
post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_hi =
cpu_to_le32(putPaddrHigh(pdma_phys_addr1));
if (!phba->sli4_hba.intr_enable)
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
else
rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
/* The IOCTL status is embedded in the mailbox subheader. */
shdr = (union lpfc_sli4_cfg_shdr *) &post_sgl_pages->header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (rc != MBX_TIMEOUT)
mempool_free(mbox, phba->mbox_mem_pool);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2511 POST_SGL mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
rc = -ENXIO;
}
return 0;
}
/**
* lpfc_sli4_remove_all_sgl_pages - Post scatter gather list for an XRI to HBA
* @phba: The virtual port for which this call being executed.
*
* This routine will remove all of the sgl pages registered with the hba.
*
* Return codes:
* 0 - Success
* -ENXIO, -ENOMEM - Failure
**/
int
lpfc_sli4_remove_all_sgl_pages(struct lpfc_hba *phba)
{
LPFC_MBOXQ_t *mbox;
int rc;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
return -ENOMEM;
lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
LPFC_MBOX_OPCODE_FCOE_REMOVE_SGL_PAGES, 0,
LPFC_SLI4_MBX_EMBED);
if (!phba->sli4_hba.intr_enable)
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
else
rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
/* The IOCTL status is embedded in the mailbox subheader. */
shdr = (union lpfc_sli4_cfg_shdr *)
&mbox->u.mqe.un.sli4_config.header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (rc != MBX_TIMEOUT)
mempool_free(mbox, phba->mbox_mem_pool);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2512 REMOVE_ALL_SGL_PAGES mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
rc = -ENXIO;
}
return rc;
}
/**
* lpfc_sli4_next_xritag - Get an xritag for the io
* @phba: Pointer to HBA context object.
*
* This function gets an xritag for the iocb. If there is no unused xritag
* it will return 0xffff.
* The function returns the allocated xritag if successful, else returns zero.
* Zero is not a valid xritag.
* The caller is not required to hold any lock.
**/
uint16_t
lpfc_sli4_next_xritag(struct lpfc_hba *phba)
{
uint16_t xritag;
spin_lock_irq(&phba->hbalock);
xritag = phba->sli4_hba.next_xri;
if ((xritag != (uint16_t) -1) && xritag <
(phba->sli4_hba.max_cfg_param.max_xri
+ phba->sli4_hba.max_cfg_param.xri_base)) {
phba->sli4_hba.next_xri++;
phba->sli4_hba.max_cfg_param.xri_used++;
spin_unlock_irq(&phba->hbalock);
return xritag;
}
spin_unlock_irq(&phba->hbalock);
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2004 Failed to allocate XRI.last XRITAG is %d"
" Max XRI is %d, Used XRI is %d\n",
phba->sli4_hba.next_xri,
phba->sli4_hba.max_cfg_param.max_xri,
phba->sli4_hba.max_cfg_param.xri_used);
return -1;
}
/**
* lpfc_sli4_post_sgl_list - post a block of sgl list to the firmware.
* @phba: pointer to lpfc hba data structure.
*
* This routine is invoked to post a block of driver's sgl pages to the
* HBA using non-embedded mailbox command. No Lock is held. This routine
* is only called when the driver is loading and after all IO has been
* stopped.
**/
int
lpfc_sli4_post_sgl_list(struct lpfc_hba *phba)
{
struct lpfc_sglq *sglq_entry;
struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
struct sgl_page_pairs *sgl_pg_pairs;
void *viraddr;
LPFC_MBOXQ_t *mbox;
uint32_t reqlen, alloclen, pg_pairs;
uint32_t mbox_tmo;
uint16_t xritag_start = 0;
int els_xri_cnt, rc = 0;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
/* The number of sgls to be posted */
els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
reqlen = els_xri_cnt * sizeof(struct sgl_page_pairs) +
sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
if (reqlen > PAGE_SIZE) {
lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
"2559 Block sgl registration required DMA "
"size (%d) great than a page\n", reqlen);
return -ENOMEM;
}
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2560 Failed to allocate mbox cmd memory\n");
return -ENOMEM;
}
/* Allocate DMA memory and set up the non-embedded mailbox command */
alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen,
LPFC_SLI4_MBX_NEMBED);
if (alloclen < reqlen) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0285 Allocated DMA memory size (%d) is "
"less than the requested DMA memory "
"size (%d)\n", alloclen, reqlen);
lpfc_sli4_mbox_cmd_free(phba, mbox);
return -ENOMEM;
}
/* Get the first SGE entry from the non-embedded DMA memory */
if (unlikely(!mbox->sge_array)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
"2525 Failed to get the non-embedded SGE "
"virtual address\n");
lpfc_sli4_mbox_cmd_free(phba, mbox);
return -ENOMEM;
}
viraddr = mbox->sge_array->addr[0];
/* Set up the SGL pages in the non-embedded DMA pages */
sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
sgl_pg_pairs = &sgl->sgl_pg_pairs;
for (pg_pairs = 0; pg_pairs < els_xri_cnt; pg_pairs++) {
sglq_entry = phba->sli4_hba.lpfc_els_sgl_array[pg_pairs];
/* Set up the sge entry */
sgl_pg_pairs->sgl_pg0_addr_lo =
cpu_to_le32(putPaddrLow(sglq_entry->phys));
sgl_pg_pairs->sgl_pg0_addr_hi =
cpu_to_le32(putPaddrHigh(sglq_entry->phys));
sgl_pg_pairs->sgl_pg1_addr_lo =
cpu_to_le32(putPaddrLow(0));
sgl_pg_pairs->sgl_pg1_addr_hi =
cpu_to_le32(putPaddrHigh(0));
/* Keep the first xritag on the list */
if (pg_pairs == 0)
xritag_start = sglq_entry->sli4_xritag;
sgl_pg_pairs++;
}
bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
pg_pairs = (pg_pairs > 0) ? (pg_pairs - 1) : pg_pairs;
bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs);
/* Perform endian conversion if necessary */
sgl->word0 = cpu_to_le32(sgl->word0);
if (!phba->sli4_hba.intr_enable)
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
else {
mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
}
shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (rc != MBX_TIMEOUT)
lpfc_sli4_mbox_cmd_free(phba, mbox);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2513 POST_SGL_BLOCK mailbox command failed "
"status x%x add_status x%x mbx status x%x\n",
shdr_status, shdr_add_status, rc);
rc = -ENXIO;
}
return rc;
}
/**
* lpfc_sli4_post_scsi_sgl_block - post a block of scsi sgl list to firmware
* @phba: pointer to lpfc hba data structure.
* @sblist: pointer to scsi buffer list.
* @count: number of scsi buffers on the list.
*
* This routine is invoked to post a block of @count scsi sgl pages from a
* SCSI buffer list @sblist to the HBA using non-embedded mailbox command.
* No Lock is held.
*
**/
int
lpfc_sli4_post_scsi_sgl_block(struct lpfc_hba *phba, struct list_head *sblist,
int cnt)
{
struct lpfc_scsi_buf *psb;
struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
struct sgl_page_pairs *sgl_pg_pairs;
void *viraddr;
LPFC_MBOXQ_t *mbox;
uint32_t reqlen, alloclen, pg_pairs;
uint32_t mbox_tmo;
uint16_t xritag_start = 0;
int rc = 0;
uint32_t shdr_status, shdr_add_status;
dma_addr_t pdma_phys_bpl1;
union lpfc_sli4_cfg_shdr *shdr;
/* Calculate the requested length of the dma memory */
reqlen = cnt * sizeof(struct sgl_page_pairs) +
sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
if (reqlen > PAGE_SIZE) {
lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
"0217 Block sgl registration required DMA "
"size (%d) great than a page\n", reqlen);
return -ENOMEM;
}
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0283 Failed to allocate mbox cmd memory\n");
return -ENOMEM;
}
/* Allocate DMA memory and set up the non-embedded mailbox command */
alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen,
LPFC_SLI4_MBX_NEMBED);
if (alloclen < reqlen) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2561 Allocated DMA memory size (%d) is "
"less than the requested DMA memory "
"size (%d)\n", alloclen, reqlen);
lpfc_sli4_mbox_cmd_free(phba, mbox);
return -ENOMEM;
}
/* Get the first SGE entry from the non-embedded DMA memory */
if (unlikely(!mbox->sge_array)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
"2565 Failed to get the non-embedded SGE "
"virtual address\n");
lpfc_sli4_mbox_cmd_free(phba, mbox);
return -ENOMEM;
}
viraddr = mbox->sge_array->addr[0];
/* Set up the SGL pages in the non-embedded DMA pages */
sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
sgl_pg_pairs = &sgl->sgl_pg_pairs;
pg_pairs = 0;
list_for_each_entry(psb, sblist, list) {
/* Set up the sge entry */
sgl_pg_pairs->sgl_pg0_addr_lo =
cpu_to_le32(putPaddrLow(psb->dma_phys_bpl));
sgl_pg_pairs->sgl_pg0_addr_hi =
cpu_to_le32(putPaddrHigh(psb->dma_phys_bpl));
if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE)
pdma_phys_bpl1 = psb->dma_phys_bpl + SGL_PAGE_SIZE;
else
pdma_phys_bpl1 = 0;
sgl_pg_pairs->sgl_pg1_addr_lo =
cpu_to_le32(putPaddrLow(pdma_phys_bpl1));
sgl_pg_pairs->sgl_pg1_addr_hi =
cpu_to_le32(putPaddrHigh(pdma_phys_bpl1));
/* Keep the first xritag on the list */
if (pg_pairs == 0)
xritag_start = psb->cur_iocbq.sli4_xritag;
sgl_pg_pairs++;
pg_pairs++;
}
bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs);
/* Perform endian conversion if necessary */
sgl->word0 = cpu_to_le32(sgl->word0);
if (!phba->sli4_hba.intr_enable)
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
else {
mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
}
shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (rc != MBX_TIMEOUT)
lpfc_sli4_mbox_cmd_free(phba, mbox);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2564 POST_SGL_BLOCK mailbox command failed "
"status x%x add_status x%x mbx status x%x\n",
shdr_status, shdr_add_status, rc);
rc = -ENXIO;
}
return rc;
}
/**
* lpfc_fc_frame_check - Check that this frame is a valid frame to handle
* @phba: pointer to lpfc_hba struct that the frame was received on
* @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
*
* This function checks the fields in the @fc_hdr to see if the FC frame is a
* valid type of frame that the LPFC driver will handle. This function will
* return a zero if the frame is a valid frame or a non zero value when the
* frame does not pass the check.
**/
static int
lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr)
{
char *rctl_names[] = FC_RCTL_NAMES_INIT;
char *type_names[] = FC_TYPE_NAMES_INIT;
struct fc_vft_header *fc_vft_hdr;
switch (fc_hdr->fh_r_ctl) {
case FC_RCTL_DD_UNCAT: /* uncategorized information */
case FC_RCTL_DD_SOL_DATA: /* solicited data */
case FC_RCTL_DD_UNSOL_CTL: /* unsolicited control */
case FC_RCTL_DD_SOL_CTL: /* solicited control or reply */
case FC_RCTL_DD_UNSOL_DATA: /* unsolicited data */
case FC_RCTL_DD_DATA_DESC: /* data descriptor */
case FC_RCTL_DD_UNSOL_CMD: /* unsolicited command */
case FC_RCTL_DD_CMD_STATUS: /* command status */
case FC_RCTL_ELS_REQ: /* extended link services request */
case FC_RCTL_ELS_REP: /* extended link services reply */
case FC_RCTL_ELS4_REQ: /* FC-4 ELS request */
case FC_RCTL_ELS4_REP: /* FC-4 ELS reply */
case FC_RCTL_BA_NOP: /* basic link service NOP */
case FC_RCTL_BA_ABTS: /* basic link service abort */
case FC_RCTL_BA_RMC: /* remove connection */
case FC_RCTL_BA_ACC: /* basic accept */
case FC_RCTL_BA_RJT: /* basic reject */
case FC_RCTL_BA_PRMT:
case FC_RCTL_ACK_1: /* acknowledge_1 */
case FC_RCTL_ACK_0: /* acknowledge_0 */
case FC_RCTL_P_RJT: /* port reject */
case FC_RCTL_F_RJT: /* fabric reject */
case FC_RCTL_P_BSY: /* port busy */
case FC_RCTL_F_BSY: /* fabric busy to data frame */
case FC_RCTL_F_BSYL: /* fabric busy to link control frame */
case FC_RCTL_LCR: /* link credit reset */
case FC_RCTL_END: /* end */
break;
case FC_RCTL_VFTH: /* Virtual Fabric tagging Header */
fc_vft_hdr = (struct fc_vft_header *)fc_hdr;
fc_hdr = &((struct fc_frame_header *)fc_vft_hdr)[1];
return lpfc_fc_frame_check(phba, fc_hdr);
default:
goto drop;
}
switch (fc_hdr->fh_type) {
case FC_TYPE_BLS:
case FC_TYPE_ELS:
case FC_TYPE_FCP:
case FC_TYPE_CT:
break;
case FC_TYPE_IP:
case FC_TYPE_ILS:
default:
goto drop;
}
lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
"2538 Received frame rctl:%s type:%s\n",
rctl_names[fc_hdr->fh_r_ctl],
type_names[fc_hdr->fh_type]);
return 0;
drop:
lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
"2539 Dropped frame rctl:%s type:%s\n",
rctl_names[fc_hdr->fh_r_ctl],
type_names[fc_hdr->fh_type]);
return 1;
}
/**
* lpfc_fc_hdr_get_vfi - Get the VFI from an FC frame
* @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
*
* This function processes the FC header to retrieve the VFI from the VF
* header, if one exists. This function will return the VFI if one exists
* or 0 if no VSAN Header exists.
**/
static uint32_t
lpfc_fc_hdr_get_vfi(struct fc_frame_header *fc_hdr)
{
struct fc_vft_header *fc_vft_hdr = (struct fc_vft_header *)fc_hdr;
if (fc_hdr->fh_r_ctl != FC_RCTL_VFTH)
return 0;
return bf_get(fc_vft_hdr_vf_id, fc_vft_hdr);
}
/**
* lpfc_fc_frame_to_vport - Finds the vport that a frame is destined to
* @phba: Pointer to the HBA structure to search for the vport on
* @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
* @fcfi: The FC Fabric ID that the frame came from
*
* This function searches the @phba for a vport that matches the content of the
* @fc_hdr passed in and the @fcfi. This function uses the @fc_hdr to fetch the
* VFI, if the Virtual Fabric Tagging Header exists, and the DID. This function
* returns the matching vport pointer or NULL if unable to match frame to a
* vport.
**/
static struct lpfc_vport *
lpfc_fc_frame_to_vport(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr,
uint16_t fcfi)
{
struct lpfc_vport **vports;
struct lpfc_vport *vport = NULL;
int i;
uint32_t did = (fc_hdr->fh_d_id[0] << 16 |
fc_hdr->fh_d_id[1] << 8 |
fc_hdr->fh_d_id[2]);
vports = lpfc_create_vport_work_array(phba);
if (vports != NULL)
for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
if (phba->fcf.fcfi == fcfi &&
vports[i]->vfi == lpfc_fc_hdr_get_vfi(fc_hdr) &&
vports[i]->fc_myDID == did) {
vport = vports[i];
break;
}
}
lpfc_destroy_vport_work_array(phba, vports);
return vport;
}
/**
* lpfc_fc_frame_add - Adds a frame to the vport's list of received sequences
* @dmabuf: pointer to a dmabuf that describes the hdr and data of the FC frame
*
* This function searches through the existing incomplete sequences that have
* been sent to this @vport. If the frame matches one of the incomplete
* sequences then the dbuf in the @dmabuf is added to the list of frames that
* make up that sequence. If no sequence is found that matches this frame then
* the function will add the hbuf in the @dmabuf to the @vport's rcv_buffer_list
* This function returns a pointer to the first dmabuf in the sequence list that
* the frame was linked to.
**/
static struct hbq_dmabuf *
lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf)
{
struct fc_frame_header *new_hdr;
struct fc_frame_header *temp_hdr;
struct lpfc_dmabuf *d_buf;
struct lpfc_dmabuf *h_buf;
struct hbq_dmabuf *seq_dmabuf = NULL;
struct hbq_dmabuf *temp_dmabuf = NULL;
new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
/* Use the hdr_buf to find the sequence that this frame belongs to */
list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) {
temp_hdr = (struct fc_frame_header *)h_buf->virt;
if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) ||
(temp_hdr->fh_ox_id != new_hdr->fh_ox_id) ||
(memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3)))
continue;
/* found a pending sequence that matches this frame */
seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
break;
}
if (!seq_dmabuf) {
/*
* This indicates first frame received for this sequence.
* Queue the buffer on the vport's rcv_buffer_list.
*/
list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list);
return dmabuf;
}
temp_hdr = seq_dmabuf->hbuf.virt;
if (new_hdr->fh_seq_cnt < temp_hdr->fh_seq_cnt) {
list_add(&seq_dmabuf->dbuf.list, &dmabuf->dbuf.list);
return dmabuf;
}
/* find the correct place in the sequence to insert this frame */
list_for_each_entry_reverse(d_buf, &seq_dmabuf->dbuf.list, list) {
temp_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
temp_hdr = (struct fc_frame_header *)temp_dmabuf->hbuf.virt;
/*
* If the frame's sequence count is greater than the frame on
* the list then insert the frame right after this frame
*/
if (new_hdr->fh_seq_cnt > temp_hdr->fh_seq_cnt) {
list_add(&dmabuf->dbuf.list, &temp_dmabuf->dbuf.list);
return seq_dmabuf;
}
}
return NULL;
}
/**
* lpfc_seq_complete - Indicates if a sequence is complete
* @dmabuf: pointer to a dmabuf that describes the FC sequence
*
* This function checks the sequence, starting with the frame described by
* @dmabuf, to see if all the frames associated with this sequence are present.
* the frames associated with this sequence are linked to the @dmabuf using the
* dbuf list. This function looks for two major things. 1) That the first frame
* has a sequence count of zero. 2) There is a frame with last frame of sequence
* set. 3) That there are no holes in the sequence count. The function will
* return 1 when the sequence is complete, otherwise it will return 0.
**/
static int
lpfc_seq_complete(struct hbq_dmabuf *dmabuf)
{
struct fc_frame_header *hdr;
struct lpfc_dmabuf *d_buf;
struct hbq_dmabuf *seq_dmabuf;
uint32_t fctl;
int seq_count = 0;
hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
/* make sure first fame of sequence has a sequence count of zero */
if (hdr->fh_seq_cnt != seq_count)
return 0;
fctl = (hdr->fh_f_ctl[0] << 16 |
hdr->fh_f_ctl[1] << 8 |
hdr->fh_f_ctl[2]);
/* If last frame of sequence we can return success. */
if (fctl & FC_FC_END_SEQ)
return 1;
list_for_each_entry(d_buf, &dmabuf->dbuf.list, list) {
seq_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
/* If there is a hole in the sequence count then fail. */
if (++seq_count != hdr->fh_seq_cnt)
return 0;
fctl = (hdr->fh_f_ctl[0] << 16 |
hdr->fh_f_ctl[1] << 8 |
hdr->fh_f_ctl[2]);
/* If last frame of sequence we can return success. */
if (fctl & FC_FC_END_SEQ)
return 1;
}
return 0;
}
/**
* lpfc_prep_seq - Prep sequence for ULP processing
* @vport: Pointer to the vport on which this sequence was received
* @dmabuf: pointer to a dmabuf that describes the FC sequence
*
* This function takes a sequence, described by a list of frames, and creates
* a list of iocbq structures to describe the sequence. This iocbq list will be
* used to issue to the generic unsolicited sequence handler. This routine
* returns a pointer to the first iocbq in the list. If the function is unable
* to allocate an iocbq then it throw out the received frames that were not
* able to be described and return a pointer to the first iocbq. If unable to
* allocate any iocbqs (including the first) this function will return NULL.
**/
static struct lpfc_iocbq *
lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf)
{
struct lpfc_dmabuf *d_buf, *n_buf;
struct lpfc_iocbq *first_iocbq, *iocbq;
struct fc_frame_header *fc_hdr;
uint32_t sid;
fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
/* remove from receive buffer list */
list_del_init(&seq_dmabuf->hbuf.list);
/* get the Remote Port's SID */
sid = (fc_hdr->fh_s_id[0] << 16 |
fc_hdr->fh_s_id[1] << 8 |
fc_hdr->fh_s_id[2]);
/* Get an iocbq struct to fill in. */
first_iocbq = lpfc_sli_get_iocbq(vport->phba);
if (first_iocbq) {
/* Initialize the first IOCB. */
first_iocbq->iocb.ulpStatus = IOSTAT_SUCCESS;
first_iocbq->iocb.ulpCommand = CMD_IOCB_RCV_SEQ64_CX;
first_iocbq->iocb.ulpContext = be16_to_cpu(fc_hdr->fh_ox_id);
first_iocbq->iocb.unsli3.rcvsli3.vpi =
vport->vpi + vport->phba->vpi_base;
/* put the first buffer into the first IOCBq */
first_iocbq->context2 = &seq_dmabuf->dbuf;
first_iocbq->context3 = NULL;
first_iocbq->iocb.ulpBdeCount = 1;
first_iocbq->iocb.un.cont64[0].tus.f.bdeSize =
LPFC_DATA_BUF_SIZE;
first_iocbq->iocb.un.rcvels.remoteID = sid;
}
iocbq = first_iocbq;
/*
* Each IOCBq can have two Buffers assigned, so go through the list
* of buffers for this sequence and save two buffers in each IOCBq
*/
list_for_each_entry_safe(d_buf, n_buf, &seq_dmabuf->dbuf.list, list) {
if (!iocbq) {
lpfc_in_buf_free(vport->phba, d_buf);
continue;
}
if (!iocbq->context3) {
iocbq->context3 = d_buf;
iocbq->iocb.ulpBdeCount++;
iocbq->iocb.unsli3.rcvsli3.bde2.tus.f.bdeSize =
LPFC_DATA_BUF_SIZE;
} else {
iocbq = lpfc_sli_get_iocbq(vport->phba);
if (!iocbq) {
if (first_iocbq) {
first_iocbq->iocb.ulpStatus =
IOSTAT_FCP_RSP_ERROR;
first_iocbq->iocb.un.ulpWord[4] =
IOERR_NO_RESOURCES;
}
lpfc_in_buf_free(vport->phba, d_buf);
continue;
}
iocbq->context2 = d_buf;
iocbq->context3 = NULL;
iocbq->iocb.ulpBdeCount = 1;
iocbq->iocb.un.cont64[0].tus.f.bdeSize =
LPFC_DATA_BUF_SIZE;
iocbq->iocb.un.rcvels.remoteID = sid;
list_add_tail(&iocbq->list, &first_iocbq->list);
}
}
return first_iocbq;
}
/**
* lpfc_sli4_handle_received_buffer - Handle received buffers from firmware
* @phba: Pointer to HBA context object.
*
* This function is called with no lock held. This function processes all
* the received buffers and gives it to upper layers when a received buffer
* indicates that it is the final frame in the sequence. The interrupt
* service routine processes received buffers at interrupt contexts and adds
* received dma buffers to the rb_pend_list queue and signals the worker thread.
* Worker thread calls lpfc_sli4_handle_received_buffer, which will call the
* appropriate receive function when the final frame in a sequence is received.
**/
int
lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba)
{
LIST_HEAD(cmplq);
struct hbq_dmabuf *dmabuf, *seq_dmabuf;
struct fc_frame_header *fc_hdr;
struct lpfc_vport *vport;
uint32_t fcfi;
struct lpfc_iocbq *iocbq;
/* Clear hba flag and get all received buffers into the cmplq */
spin_lock_irq(&phba->hbalock);
phba->hba_flag &= ~HBA_RECEIVE_BUFFER;
list_splice_init(&phba->rb_pend_list, &cmplq);
spin_unlock_irq(&phba->hbalock);
/* Process each received buffer */
while ((dmabuf = lpfc_sli_hbqbuf_get(&cmplq)) != NULL) {
fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
/* check to see if this a valid type of frame */
if (lpfc_fc_frame_check(phba, fc_hdr)) {
lpfc_in_buf_free(phba, &dmabuf->dbuf);
continue;
}
fcfi = bf_get(lpfc_rcqe_fcf_id, &dmabuf->rcqe);
vport = lpfc_fc_frame_to_vport(phba, fc_hdr, fcfi);
if (!vport) {
/* throw out the frame */
lpfc_in_buf_free(phba, &dmabuf->dbuf);
continue;
}
/* Link this frame */
seq_dmabuf = lpfc_fc_frame_add(vport, dmabuf);
if (!seq_dmabuf) {
/* unable to add frame to vport - throw it out */
lpfc_in_buf_free(phba, &dmabuf->dbuf);
continue;
}
/* If not last frame in sequence continue processing frames. */
if (!lpfc_seq_complete(seq_dmabuf)) {
/*
* When saving off frames post a new one and mark this
* frame to be freed when it is finished.
**/
lpfc_sli_hbqbuf_fill_hbqs(phba, LPFC_ELS_HBQ, 1);
dmabuf->tag = -1;
continue;
}
fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
iocbq = lpfc_prep_seq(vport, seq_dmabuf);
if (!lpfc_complete_unsol_iocb(phba,
&phba->sli.ring[LPFC_ELS_RING],
iocbq, fc_hdr->fh_r_ctl,
fc_hdr->fh_type))
lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
"2540 Ring %d handler: unexpected Rctl "
"x%x Type x%x received\n",
LPFC_ELS_RING,
fc_hdr->fh_r_ctl, fc_hdr->fh_type);
};
return 0;
}
/**
* lpfc_sli4_post_all_rpi_hdrs - Post the rpi header memory region to the port
* @phba: pointer to lpfc hba data structure.
*
* This routine is invoked to post rpi header templates to the
* HBA consistent with the SLI-4 interface spec. This routine
* posts a PAGE_SIZE memory region to the port to hold up to
* PAGE_SIZE modulo 64 rpi context headers.
*
* This routine does not require any locks. It's usage is expected
* to be driver load or reset recovery when the driver is
* sequential.
*
* Return codes
* 0 - sucessful
* EIO - The mailbox failed to complete successfully.
* When this error occurs, the driver is not guaranteed
* to have any rpi regions posted to the device and
* must either attempt to repost the regions or take a
* fatal error.
**/
int
lpfc_sli4_post_all_rpi_hdrs(struct lpfc_hba *phba)
{
struct lpfc_rpi_hdr *rpi_page;
uint32_t rc = 0;
/* Post all rpi memory regions to the port. */
list_for_each_entry(rpi_page, &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
rc = lpfc_sli4_post_rpi_hdr(phba, rpi_page);
if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2008 Error %d posting all rpi "
"headers\n", rc);
rc = -EIO;
break;
}
}
return rc;
}
/**
* lpfc_sli4_post_rpi_hdr - Post an rpi header memory region to the port
* @phba: pointer to lpfc hba data structure.
* @rpi_page: pointer to the rpi memory region.
*
* This routine is invoked to post a single rpi header to the
* HBA consistent with the SLI-4 interface spec. This memory region
* maps up to 64 rpi context regions.
*
* Return codes
* 0 - sucessful
* ENOMEM - No available memory
* EIO - The mailbox failed to complete successfully.
**/
int
lpfc_sli4_post_rpi_hdr(struct lpfc_hba *phba, struct lpfc_rpi_hdr *rpi_page)
{
LPFC_MBOXQ_t *mboxq;
struct lpfc_mbx_post_hdr_tmpl *hdr_tmpl;
uint32_t rc = 0;
uint32_t mbox_tmo;
uint32_t shdr_status, shdr_add_status;
union lpfc_sli4_cfg_shdr *shdr;
/* The port is notified of the header region via a mailbox command. */
mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mboxq) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2001 Unable to allocate memory for issuing "
"SLI_CONFIG_SPECIAL mailbox command\n");
return -ENOMEM;
}
/* Post all rpi memory regions to the port. */
hdr_tmpl = &mboxq->u.mqe.un.hdr_tmpl;
mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
LPFC_MBOX_OPCODE_FCOE_POST_HDR_TEMPLATE,
sizeof(struct lpfc_mbx_post_hdr_tmpl) -
sizeof(struct mbox_header), LPFC_SLI4_MBX_EMBED);
bf_set(lpfc_mbx_post_hdr_tmpl_page_cnt,
hdr_tmpl, rpi_page->page_count);
bf_set(lpfc_mbx_post_hdr_tmpl_rpi_offset, hdr_tmpl,
rpi_page->start_rpi);
hdr_tmpl->rpi_paddr_lo = putPaddrLow(rpi_page->dmabuf->phys);
hdr_tmpl->rpi_paddr_hi = putPaddrHigh(rpi_page->dmabuf->phys);
rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
shdr = (union lpfc_sli4_cfg_shdr *) &hdr_tmpl->header.cfg_shdr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (rc != MBX_TIMEOUT)
mempool_free(mboxq, phba->mbox_mem_pool);
if (shdr_status || shdr_add_status || rc) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2514 POST_RPI_HDR mailbox failed with "
"status x%x add_status x%x, mbx status x%x\n",
shdr_status, shdr_add_status, rc);
rc = -ENXIO;
}
return rc;
}
/**
* lpfc_sli4_alloc_rpi - Get an available rpi in the device's range
* @phba: pointer to lpfc hba data structure.
*
* This routine is invoked to post rpi header templates to the
* HBA consistent with the SLI-4 interface spec. This routine
* posts a PAGE_SIZE memory region to the port to hold up to
* PAGE_SIZE modulo 64 rpi context headers.
*
* Returns
* A nonzero rpi defined as rpi_base <= rpi < max_rpi if sucessful
* LPFC_RPI_ALLOC_ERROR if no rpis are available.
**/
int
lpfc_sli4_alloc_rpi(struct lpfc_hba *phba)
{
int rpi;
uint16_t max_rpi, rpi_base, rpi_limit;
uint16_t rpi_remaining;
struct lpfc_rpi_hdr *rpi_hdr;
max_rpi = phba->sli4_hba.max_cfg_param.max_rpi;
rpi_base = phba->sli4_hba.max_cfg_param.rpi_base;
rpi_limit = phba->sli4_hba.next_rpi;
/*
* The valid rpi range is not guaranteed to be zero-based. Start
* the search at the rpi_base as reported by the port.
*/
spin_lock_irq(&phba->hbalock);
rpi = find_next_zero_bit(phba->sli4_hba.rpi_bmask, rpi_limit, rpi_base);
if (rpi >= rpi_limit || rpi < rpi_base)
rpi = LPFC_RPI_ALLOC_ERROR;
else {
set_bit(rpi, phba->sli4_hba.rpi_bmask);
phba->sli4_hba.max_cfg_param.rpi_used++;
phba->sli4_hba.rpi_count++;
}
/*
* Don't try to allocate more rpi header regions if the device limit
* on available rpis max has been exhausted.
*/
if ((rpi == LPFC_RPI_ALLOC_ERROR) &&
(phba->sli4_hba.rpi_count >= max_rpi)) {
spin_unlock_irq(&phba->hbalock);
return rpi;
}
/*
* If the driver is running low on rpi resources, allocate another
* page now. Note that the next_rpi value is used because
* it represents how many are actually in use whereas max_rpi notes
* how many are supported max by the device.
*/
rpi_remaining = phba->sli4_hba.next_rpi - rpi_base -
phba->sli4_hba.rpi_count;
spin_unlock_irq(&phba->hbalock);
if (rpi_remaining < LPFC_RPI_LOW_WATER_MARK) {
rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
if (!rpi_hdr) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2002 Error Could not grow rpi "
"count\n");
} else {
lpfc_sli4_post_rpi_hdr(phba, rpi_hdr);
}
}
return rpi;
}
/**
* lpfc_sli4_free_rpi - Release an rpi for reuse.
* @phba: pointer to lpfc hba data structure.
*
* This routine is invoked to release an rpi to the pool of
* available rpis maintained by the driver.
**/
void
lpfc_sli4_free_rpi(struct lpfc_hba *phba, int rpi)
{
spin_lock_irq(&phba->hbalock);
clear_bit(rpi, phba->sli4_hba.rpi_bmask);
phba->sli4_hba.rpi_count--;
phba->sli4_hba.max_cfg_param.rpi_used--;
spin_unlock_irq(&phba->hbalock);
}
/**
* lpfc_sli4_remove_rpis - Remove the rpi bitmask region
* @phba: pointer to lpfc hba data structure.
*
* This routine is invoked to remove the memory region that
* provided rpi via a bitmask.
**/
void
lpfc_sli4_remove_rpis(struct lpfc_hba *phba)
{
kfree(phba->sli4_hba.rpi_bmask);
}
/**
* lpfc_sli4_resume_rpi - Remove the rpi bitmask region
* @phba: pointer to lpfc hba data structure.
*
* This routine is invoked to remove the memory region that
* provided rpi via a bitmask.
**/
int
lpfc_sli4_resume_rpi(struct lpfc_nodelist *ndlp)
{
LPFC_MBOXQ_t *mboxq;
struct lpfc_hba *phba = ndlp->phba;
int rc;
/* The port is notified of the header region via a mailbox command. */
mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mboxq)
return -ENOMEM;
/* Post all rpi memory regions to the port. */
lpfc_resume_rpi(mboxq, ndlp);
rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2010 Resume RPI Mailbox failed "
"status %d, mbxStatus x%x\n", rc,
bf_get(lpfc_mqe_status, &mboxq->u.mqe));
mempool_free(mboxq, phba->mbox_mem_pool);
return -EIO;
}
return 0;
}
/**
* lpfc_sli4_init_vpi - Initialize a vpi with the port
* @phba: pointer to lpfc hba data structure.
* @vpi: vpi value to activate with the port.
*
* This routine is invoked to activate a vpi with the
* port when the host intends to use vports with a
* nonzero vpi.
*
* Returns:
* 0 success
* -Evalue otherwise
**/
int
lpfc_sli4_init_vpi(struct lpfc_hba *phba, uint16_t vpi)
{
LPFC_MBOXQ_t *mboxq;
int rc = 0;
uint32_t mbox_tmo;
if (vpi == 0)
return -EINVAL;
mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mboxq)
return -ENOMEM;
lpfc_init_vpi(mboxq, vpi);
mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_INIT_VPI);
rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
if (rc != MBX_TIMEOUT)
mempool_free(mboxq, phba->mbox_mem_pool);
if (rc != MBX_SUCCESS) {
lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
"2022 INIT VPI Mailbox failed "
"status %d, mbxStatus x%x\n", rc,
bf_get(lpfc_mqe_status, &mboxq->u.mqe));
rc = -EIO;
}
return rc;
}
/**
* lpfc_mbx_cmpl_add_fcf_record - add fcf mbox completion handler.
* @phba: pointer to lpfc hba data structure.
* @mboxq: Pointer to mailbox object.
*
* This routine is invoked to manually add a single FCF record. The caller
* must pass a completely initialized FCF_Record. This routine takes
* care of the nonembedded mailbox operations.
**/
static void
lpfc_mbx_cmpl_add_fcf_record(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
{
void *virt_addr;
union lpfc_sli4_cfg_shdr *shdr;
uint32_t shdr_status, shdr_add_status;
virt_addr = mboxq->sge_array->addr[0];
/* The IOCTL status is embedded in the mailbox subheader. */
shdr = (union lpfc_sli4_cfg_shdr *) virt_addr;
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if ((shdr_status || shdr_add_status) &&
(shdr_status != STATUS_FCF_IN_USE))
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2558 ADD_FCF_RECORD mailbox failed with "
"status x%x add_status x%x\n",
shdr_status, shdr_add_status);
lpfc_sli4_mbox_cmd_free(phba, mboxq);
}
/**
* lpfc_sli4_add_fcf_record - Manually add an FCF Record.
* @phba: pointer to lpfc hba data structure.
* @fcf_record: pointer to the initialized fcf record to add.
*
* This routine is invoked to manually add a single FCF record. The caller
* must pass a completely initialized FCF_Record. This routine takes
* care of the nonembedded mailbox operations.
**/
int
lpfc_sli4_add_fcf_record(struct lpfc_hba *phba, struct fcf_record *fcf_record)
{
int rc = 0;
LPFC_MBOXQ_t *mboxq;
uint8_t *bytep;
void *virt_addr;
dma_addr_t phys_addr;
struct lpfc_mbx_sge sge;
uint32_t alloc_len, req_len;
uint32_t fcfindex;
mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mboxq) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2009 Failed to allocate mbox for ADD_FCF cmd\n");
return -ENOMEM;
}
req_len = sizeof(struct fcf_record) + sizeof(union lpfc_sli4_cfg_shdr) +
sizeof(uint32_t);
/* Allocate DMA memory and set up the non-embedded mailbox command */
alloc_len = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
LPFC_MBOX_OPCODE_FCOE_ADD_FCF,
req_len, LPFC_SLI4_MBX_NEMBED);
if (alloc_len < req_len) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2523 Allocated DMA memory size (x%x) is "
"less than the requested DMA memory "
"size (x%x)\n", alloc_len, req_len);
lpfc_sli4_mbox_cmd_free(phba, mboxq);
return -ENOMEM;
}
/*
* Get the first SGE entry from the non-embedded DMA memory. This
* routine only uses a single SGE.
*/
lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
if (unlikely(!mboxq->sge_array)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
"2526 Failed to get the non-embedded SGE "
"virtual address\n");
lpfc_sli4_mbox_cmd_free(phba, mboxq);
return -ENOMEM;
}
virt_addr = mboxq->sge_array->addr[0];
/*
* Configure the FCF record for FCFI 0. This is the driver's
* hardcoded default and gets used in nonFIP mode.
*/
fcfindex = bf_get(lpfc_fcf_record_fcf_index, fcf_record);
bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
lpfc_sli_pcimem_bcopy(&fcfindex, bytep, sizeof(uint32_t));
/*
* Copy the fcf_index and the FCF Record Data. The data starts after
* the FCoE header plus word10. The data copy needs to be endian
* correct.
*/
bytep += sizeof(uint32_t);
lpfc_sli_pcimem_bcopy(fcf_record, bytep, sizeof(struct fcf_record));
mboxq->vport = phba->pport;
mboxq->mbox_cmpl = lpfc_mbx_cmpl_add_fcf_record;
rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2515 ADD_FCF_RECORD mailbox failed with "
"status 0x%x\n", rc);
lpfc_sli4_mbox_cmd_free(phba, mboxq);
rc = -EIO;
} else
rc = 0;
return rc;
}
/**
* lpfc_sli4_build_dflt_fcf_record - Build the driver's default FCF Record.
* @phba: pointer to lpfc hba data structure.
* @fcf_record: pointer to the fcf record to write the default data.
* @fcf_index: FCF table entry index.
*
* This routine is invoked to build the driver's default FCF record. The
* values used are hardcoded. This routine handles memory initialization.
*
**/
void
lpfc_sli4_build_dflt_fcf_record(struct lpfc_hba *phba,
struct fcf_record *fcf_record,
uint16_t fcf_index)
{
memset(fcf_record, 0, sizeof(struct fcf_record));
fcf_record->max_rcv_size = LPFC_FCOE_MAX_RCV_SIZE;
fcf_record->fka_adv_period = LPFC_FCOE_FKA_ADV_PER;
fcf_record->fip_priority = LPFC_FCOE_FIP_PRIORITY;
bf_set(lpfc_fcf_record_mac_0, fcf_record, phba->fc_map[0]);
bf_set(lpfc_fcf_record_mac_1, fcf_record, phba->fc_map[1]);
bf_set(lpfc_fcf_record_mac_2, fcf_record, phba->fc_map[2]);
bf_set(lpfc_fcf_record_mac_3, fcf_record, LPFC_FCOE_FCF_MAC3);
bf_set(lpfc_fcf_record_mac_4, fcf_record, LPFC_FCOE_FCF_MAC4);
bf_set(lpfc_fcf_record_mac_5, fcf_record, LPFC_FCOE_FCF_MAC5);
bf_set(lpfc_fcf_record_fc_map_0, fcf_record, phba->fc_map[0]);
bf_set(lpfc_fcf_record_fc_map_1, fcf_record, phba->fc_map[1]);
bf_set(lpfc_fcf_record_fc_map_2, fcf_record, phba->fc_map[2]);
bf_set(lpfc_fcf_record_fcf_valid, fcf_record, 1);
bf_set(lpfc_fcf_record_fcf_avail, fcf_record, 1);
bf_set(lpfc_fcf_record_fcf_index, fcf_record, fcf_index);
bf_set(lpfc_fcf_record_mac_addr_prov, fcf_record,
LPFC_FCF_FPMA | LPFC_FCF_SPMA);
/* Set the VLAN bit map */
if (phba->valid_vlan) {
fcf_record->vlan_bitmap[phba->vlan_id / 8]
= 1 << (phba->vlan_id % 8);
}
}
/**
* lpfc_sli4_read_fcf_record - Read the driver's default FCF Record.
* @phba: pointer to lpfc hba data structure.
* @fcf_index: FCF table entry offset.
*
* This routine is invoked to read up to @fcf_num of FCF record from the
* device starting with the given @fcf_index.
**/
int
lpfc_sli4_read_fcf_record(struct lpfc_hba *phba, uint16_t fcf_index)
{
int rc = 0, error;
LPFC_MBOXQ_t *mboxq;
void *virt_addr;
dma_addr_t phys_addr;
uint8_t *bytep;
struct lpfc_mbx_sge sge;
uint32_t alloc_len, req_len;
struct lpfc_mbx_read_fcf_tbl *read_fcf;
mboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mboxq) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"2000 Failed to allocate mbox for "
"READ_FCF cmd\n");
return -ENOMEM;
}
req_len = sizeof(struct fcf_record) +
sizeof(union lpfc_sli4_cfg_shdr) + 2 * sizeof(uint32_t);
/* Set up READ_FCF SLI4_CONFIG mailbox-ioctl command */
alloc_len = lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_FCOE,
LPFC_MBOX_OPCODE_FCOE_READ_FCF_TABLE, req_len,
LPFC_SLI4_MBX_NEMBED);
if (alloc_len < req_len) {
lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
"0291 Allocated DMA memory size (x%x) is "
"less than the requested DMA memory "
"size (x%x)\n", alloc_len, req_len);
lpfc_sli4_mbox_cmd_free(phba, mboxq);
return -ENOMEM;
}
/* Get the first SGE entry from the non-embedded DMA memory. This
* routine only uses a single SGE.
*/
lpfc_sli4_mbx_sge_get(mboxq, 0, &sge);
phys_addr = getPaddr(sge.pa_hi, sge.pa_lo);
if (unlikely(!mboxq->sge_array)) {
lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
"2527 Failed to get the non-embedded SGE "
"virtual address\n");
lpfc_sli4_mbox_cmd_free(phba, mboxq);
return -ENOMEM;
}
virt_addr = mboxq->sge_array->addr[0];
read_fcf = (struct lpfc_mbx_read_fcf_tbl *)virt_addr;
/* Set up command fields */
bf_set(lpfc_mbx_read_fcf_tbl_indx, &read_fcf->u.request, fcf_index);
/* Perform necessary endian conversion */
bytep = virt_addr + sizeof(union lpfc_sli4_cfg_shdr);
lpfc_sli_pcimem_bcopy(bytep, bytep, sizeof(uint32_t));
mboxq->vport = phba->pport;
mboxq->mbox_cmpl = lpfc_mbx_cmpl_read_fcf_record;
rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
lpfc_sli4_mbox_cmd_free(phba, mboxq);
error = -EIO;
} else
error = 0;
return error;
}
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