linux/drivers/scsi/qla2xxx/qla_os.c

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/*
* QLogic Fibre Channel HBA Driver
* Copyright (c) 2003-2010 QLogic Corporation
*
* See LICENSE.qla2xxx for copyright and licensing details.
*/
#include "qla_def.h"
#include <linux/moduleparam.h>
#include <linux/vmalloc.h>
#include <linux/delay.h>
#include <linux/kthread.h>
#include <linux/mutex.h>
#include <linux/kobject.h>
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 08:04:11 +00:00
#include <linux/slab.h>
#include <scsi/scsi_tcq.h>
#include <scsi/scsicam.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_fc.h>
/*
* Driver version
*/
char qla2x00_version_str[40];
static int apidev_major;
/*
* SRB allocation cache
*/
static struct kmem_cache *srb_cachep;
/*
* CT6 CTX allocation cache
*/
static struct kmem_cache *ctx_cachep;
int ql2xlogintimeout = 20;
module_param(ql2xlogintimeout, int, S_IRUGO);
MODULE_PARM_DESC(ql2xlogintimeout,
"Login timeout value in seconds.");
int qlport_down_retry;
module_param(qlport_down_retry, int, S_IRUGO);
MODULE_PARM_DESC(qlport_down_retry,
"Maximum number of command retries to a port that returns "
"a PORT-DOWN status.");
int ql2xplogiabsentdevice;
module_param(ql2xplogiabsentdevice, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xplogiabsentdevice,
"Option to enable PLOGI to devices that are not present after "
"a Fabric scan. This is needed for several broken switches. "
"Default is 0 - no PLOGI. 1 - perfom PLOGI.");
int ql2xloginretrycount = 0;
module_param(ql2xloginretrycount, int, S_IRUGO);
MODULE_PARM_DESC(ql2xloginretrycount,
"Specify an alternate value for the NVRAM login retry count.");
int ql2xallocfwdump = 1;
module_param(ql2xallocfwdump, int, S_IRUGO);
MODULE_PARM_DESC(ql2xallocfwdump,
"Option to enable allocation of memory for a firmware dump "
"during HBA initialization. Memory allocation requirements "
"vary by ISP type. Default is 1 - allocate memory.");
int ql2xextended_error_logging;
module_param(ql2xextended_error_logging, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xextended_error_logging,
"Option to enable extended error logging, "
"Default is 0 - no logging. 1 - log errors.");
int ql2xshiftctondsd = 6;
module_param(ql2xshiftctondsd, int, S_IRUGO);
MODULE_PARM_DESC(ql2xshiftctondsd,
"Set to control shifting of command type processing "
"based on total number of SG elements.");
static void qla2x00_free_device(scsi_qla_host_t *);
int ql2xfdmienable=1;
module_param(ql2xfdmienable, int, S_IRUGO);
MODULE_PARM_DESC(ql2xfdmienable,
"Enables FDMI registrations. "
"0 - no FDMI. Default is 1 - perform FDMI.");
#define MAX_Q_DEPTH 32
static int ql2xmaxqdepth = MAX_Q_DEPTH;
module_param(ql2xmaxqdepth, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xmaxqdepth,
"Maximum queue depth to report for target devices.");
/* Do not change the value of this after module load */
int ql2xenabledif = 1;
module_param(ql2xenabledif, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xenabledif,
" Enable T10-CRC-DIF "
" Default is 0 - No DIF Support. 1 - Enable it");
int ql2xenablehba_err_chk;
module_param(ql2xenablehba_err_chk, int, S_IRUGO|S_IWUSR);
MODULE_PARM_DESC(ql2xenablehba_err_chk,
" Enable T10-CRC-DIF Error isolation by HBA"
" Default is 0 - Error isolation disabled, 1 - Enable it");
int ql2xiidmaenable=1;
module_param(ql2xiidmaenable, int, S_IRUGO);
MODULE_PARM_DESC(ql2xiidmaenable,
"Enables iIDMA settings "
"Default is 1 - perform iIDMA. 0 - no iIDMA.");
int ql2xmaxqueues = 1;
module_param(ql2xmaxqueues, int, S_IRUGO);
MODULE_PARM_DESC(ql2xmaxqueues,
"Enables MQ settings "
"Default is 1 for single queue. Set it to number "
"of queues in MQ mode.");
int ql2xmultique_tag;
module_param(ql2xmultique_tag, int, S_IRUGO);
MODULE_PARM_DESC(ql2xmultique_tag,
"Enables CPU affinity settings for the driver "
"Default is 0 for no affinity of request and response IO. "
"Set it to 1 to turn on the cpu affinity.");
int ql2xfwloadbin;
module_param(ql2xfwloadbin, int, S_IRUGO);
MODULE_PARM_DESC(ql2xfwloadbin,
"Option to specify location from which to load ISP firmware:\n"
" 2 -- load firmware via the request_firmware() (hotplug)\n"
" interface.\n"
" 1 -- load firmware from flash.\n"
" 0 -- use default semantics.\n");
int ql2xetsenable;
module_param(ql2xetsenable, int, S_IRUGO);
MODULE_PARM_DESC(ql2xetsenable,
"Enables firmware ETS burst."
"Default is 0 - skip ETS enablement.");
int ql2xdbwr = 1;
module_param(ql2xdbwr, int, S_IRUGO);
MODULE_PARM_DESC(ql2xdbwr,
"Option to specify scheme for request queue posting\n"
" 0 -- Regular doorbell.\n"
" 1 -- CAMRAM doorbell (faster).\n");
int ql2xtargetreset = 1;
module_param(ql2xtargetreset, int, S_IRUGO);
MODULE_PARM_DESC(ql2xtargetreset,
"Enable target reset."
"Default is 1 - use hw defaults.");
int ql2xgffidenable;
module_param(ql2xgffidenable, int, S_IRUGO);
MODULE_PARM_DESC(ql2xgffidenable,
"Enables GFF_ID checks of port type. "
"Default is 0 - Do not use GFF_ID information.");
int ql2xasynctmfenable;
module_param(ql2xasynctmfenable, int, S_IRUGO);
MODULE_PARM_DESC(ql2xasynctmfenable,
"Enables issue of TM IOCBs asynchronously via IOCB mechanism"
"Default is 0 - Issue TM IOCBs via mailbox mechanism.");
/*
* SCSI host template entry points
*/
static int qla2xxx_slave_configure(struct scsi_device * device);
static int qla2xxx_slave_alloc(struct scsi_device *);
static int qla2xxx_scan_finished(struct Scsi_Host *, unsigned long time);
static void qla2xxx_scan_start(struct Scsi_Host *);
static void qla2xxx_slave_destroy(struct scsi_device *);
static int qla2xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
static int qla2xxx_eh_abort(struct scsi_cmnd *);
static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
static int qla2xxx_eh_target_reset(struct scsi_cmnd *);
static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
static int qla2x00_change_queue_depth(struct scsi_device *, int, int);
static int qla2x00_change_queue_type(struct scsi_device *, int);
struct scsi_host_template qla2xxx_driver_template = {
.module = THIS_MODULE,
.name = QLA2XXX_DRIVER_NAME,
.queuecommand = qla2xxx_queuecommand,
.eh_abort_handler = qla2xxx_eh_abort,
.eh_device_reset_handler = qla2xxx_eh_device_reset,
.eh_target_reset_handler = qla2xxx_eh_target_reset,
.eh_bus_reset_handler = qla2xxx_eh_bus_reset,
.eh_host_reset_handler = qla2xxx_eh_host_reset,
.slave_configure = qla2xxx_slave_configure,
.slave_alloc = qla2xxx_slave_alloc,
.slave_destroy = qla2xxx_slave_destroy,
.scan_finished = qla2xxx_scan_finished,
.scan_start = qla2xxx_scan_start,
.change_queue_depth = qla2x00_change_queue_depth,
.change_queue_type = qla2x00_change_queue_type,
.this_id = -1,
.cmd_per_lun = 3,
.use_clustering = ENABLE_CLUSTERING,
.sg_tablesize = SG_ALL,
.max_sectors = 0xFFFF,
.shost_attrs = qla2x00_host_attrs,
};
static struct scsi_transport_template *qla2xxx_transport_template = NULL;
struct scsi_transport_template *qla2xxx_transport_vport_template = NULL;
/* TODO Convert to inlines
*
* Timer routines
*/
__inline__ void
qla2x00_start_timer(scsi_qla_host_t *vha, void *func, unsigned long interval)
{
init_timer(&vha->timer);
vha->timer.expires = jiffies + interval * HZ;
vha->timer.data = (unsigned long)vha;
vha->timer.function = (void (*)(unsigned long))func;
add_timer(&vha->timer);
vha->timer_active = 1;
}
static inline void
qla2x00_restart_timer(scsi_qla_host_t *vha, unsigned long interval)
{
/* Currently used for 82XX only. */
if (vha->device_flags & DFLG_DEV_FAILED)
return;
mod_timer(&vha->timer, jiffies + interval * HZ);
}
static __inline__ void
qla2x00_stop_timer(scsi_qla_host_t *vha)
{
del_timer_sync(&vha->timer);
vha->timer_active = 0;
}
static int qla2x00_do_dpc(void *data);
static void qla2x00_rst_aen(scsi_qla_host_t *);
static int qla2x00_mem_alloc(struct qla_hw_data *, uint16_t, uint16_t,
struct req_que **, struct rsp_que **);
static void qla2x00_free_fw_dump(struct qla_hw_data *);
static void qla2x00_mem_free(struct qla_hw_data *);
static void qla2x00_sp_free_dma(srb_t *);
/* -------------------------------------------------------------------------- */
static int qla2x00_alloc_queues(struct qla_hw_data *ha)
{
ha->req_q_map = kzalloc(sizeof(struct req_que *) * ha->max_req_queues,
GFP_KERNEL);
if (!ha->req_q_map) {
qla_printk(KERN_WARNING, ha,
"Unable to allocate memory for request queue ptrs\n");
goto fail_req_map;
}
ha->rsp_q_map = kzalloc(sizeof(struct rsp_que *) * ha->max_rsp_queues,
GFP_KERNEL);
if (!ha->rsp_q_map) {
qla_printk(KERN_WARNING, ha,
"Unable to allocate memory for response queue ptrs\n");
goto fail_rsp_map;
}
set_bit(0, ha->rsp_qid_map);
set_bit(0, ha->req_qid_map);
return 1;
fail_rsp_map:
kfree(ha->req_q_map);
ha->req_q_map = NULL;
fail_req_map:
return -ENOMEM;
}
static void qla2x00_free_req_que(struct qla_hw_data *ha, struct req_que *req)
{
if (req && req->ring)
dma_free_coherent(&ha->pdev->dev,
(req->length + 1) * sizeof(request_t),
req->ring, req->dma);
kfree(req);
req = NULL;
}
static void qla2x00_free_rsp_que(struct qla_hw_data *ha, struct rsp_que *rsp)
{
if (rsp && rsp->ring)
dma_free_coherent(&ha->pdev->dev,
(rsp->length + 1) * sizeof(response_t),
rsp->ring, rsp->dma);
kfree(rsp);
rsp = NULL;
}
static void qla2x00_free_queues(struct qla_hw_data *ha)
{
struct req_que *req;
struct rsp_que *rsp;
int cnt;
for (cnt = 0; cnt < ha->max_req_queues; cnt++) {
req = ha->req_q_map[cnt];
qla2x00_free_req_que(ha, req);
}
kfree(ha->req_q_map);
ha->req_q_map = NULL;
for (cnt = 0; cnt < ha->max_rsp_queues; cnt++) {
rsp = ha->rsp_q_map[cnt];
qla2x00_free_rsp_que(ha, rsp);
}
kfree(ha->rsp_q_map);
ha->rsp_q_map = NULL;
}
static int qla25xx_setup_mode(struct scsi_qla_host *vha)
{
uint16_t options = 0;
int ques, req, ret;
struct qla_hw_data *ha = vha->hw;
if (!(ha->fw_attributes & BIT_6)) {
qla_printk(KERN_INFO, ha,
"Firmware is not multi-queue capable\n");
goto fail;
}
if (ql2xmultique_tag) {
/* create a request queue for IO */
options |= BIT_7;
req = qla25xx_create_req_que(ha, options, 0, 0, -1,
QLA_DEFAULT_QUE_QOS);
if (!req) {
qla_printk(KERN_WARNING, ha,
"Can't create request queue\n");
goto fail;
}
ha->wq = alloc_workqueue("qla2xxx_wq", WQ_MEM_RECLAIM, 1);
vha->req = ha->req_q_map[req];
options |= BIT_1;
for (ques = 1; ques < ha->max_rsp_queues; ques++) {
ret = qla25xx_create_rsp_que(ha, options, 0, 0, req);
if (!ret) {
qla_printk(KERN_WARNING, ha,
"Response Queue create failed\n");
goto fail2;
}
}
ha->flags.cpu_affinity_enabled = 1;
DEBUG2(qla_printk(KERN_INFO, ha,
"CPU affinity mode enabled, no. of response"
" queues:%d, no. of request queues:%d\n",
ha->max_rsp_queues, ha->max_req_queues));
}
return 0;
fail2:
qla25xx_delete_queues(vha);
destroy_workqueue(ha->wq);
ha->wq = NULL;
fail:
ha->mqenable = 0;
kfree(ha->req_q_map);
kfree(ha->rsp_q_map);
ha->max_req_queues = ha->max_rsp_queues = 1;
return 1;
}
static char *
qla2x00_pci_info_str(struct scsi_qla_host *vha, char *str)
{
struct qla_hw_data *ha = vha->hw;
static char *pci_bus_modes[] = {
"33", "66", "100", "133",
};
uint16_t pci_bus;
strcpy(str, "PCI");
pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9;
if (pci_bus) {
strcat(str, "-X (");
strcat(str, pci_bus_modes[pci_bus]);
} else {
pci_bus = (ha->pci_attr & BIT_8) >> 8;
strcat(str, " (");
strcat(str, pci_bus_modes[pci_bus]);
}
strcat(str, " MHz)");
return (str);
}
static char *
qla24xx_pci_info_str(struct scsi_qla_host *vha, char *str)
{
static char *pci_bus_modes[] = { "33", "66", "100", "133", };
struct qla_hw_data *ha = vha->hw;
uint32_t pci_bus;
int pcie_reg;
pcie_reg = pci_find_capability(ha->pdev, PCI_CAP_ID_EXP);
if (pcie_reg) {
char lwstr[6];
uint16_t pcie_lstat, lspeed, lwidth;
pcie_reg += 0x12;
pci_read_config_word(ha->pdev, pcie_reg, &pcie_lstat);
lspeed = pcie_lstat & (BIT_0 | BIT_1 | BIT_2 | BIT_3);
lwidth = (pcie_lstat &
(BIT_4 | BIT_5 | BIT_6 | BIT_7 | BIT_8 | BIT_9)) >> 4;
strcpy(str, "PCIe (");
if (lspeed == 1)
strcat(str, "2.5GT/s ");
else if (lspeed == 2)
strcat(str, "5.0GT/s ");
else
strcat(str, "<unknown> ");
snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth);
strcat(str, lwstr);
return str;
}
strcpy(str, "PCI");
pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8;
if (pci_bus == 0 || pci_bus == 8) {
strcat(str, " (");
strcat(str, pci_bus_modes[pci_bus >> 3]);
} else {
strcat(str, "-X ");
if (pci_bus & BIT_2)
strcat(str, "Mode 2");
else
strcat(str, "Mode 1");
strcat(str, " (");
strcat(str, pci_bus_modes[pci_bus & ~BIT_2]);
}
strcat(str, " MHz)");
return str;
}
static char *
qla2x00_fw_version_str(struct scsi_qla_host *vha, char *str)
{
char un_str[10];
struct qla_hw_data *ha = vha->hw;
sprintf(str, "%d.%02d.%02d ", ha->fw_major_version,
ha->fw_minor_version,
ha->fw_subminor_version);
if (ha->fw_attributes & BIT_9) {
strcat(str, "FLX");
return (str);
}
switch (ha->fw_attributes & 0xFF) {
case 0x7:
strcat(str, "EF");
break;
case 0x17:
strcat(str, "TP");
break;
case 0x37:
strcat(str, "IP");
break;
case 0x77:
strcat(str, "VI");
break;
default:
sprintf(un_str, "(%x)", ha->fw_attributes);
strcat(str, un_str);
break;
}
if (ha->fw_attributes & 0x100)
strcat(str, "X");
return (str);
}
static char *
qla24xx_fw_version_str(struct scsi_qla_host *vha, char *str)
{
struct qla_hw_data *ha = vha->hw;
sprintf(str, "%d.%02d.%02d (%x)", ha->fw_major_version,
ha->fw_minor_version, ha->fw_subminor_version, ha->fw_attributes);
return str;
}
static inline srb_t *
qla2x00_get_new_sp(scsi_qla_host_t *vha, fc_port_t *fcport,
struct scsi_cmnd *cmd)
{
srb_t *sp;
struct qla_hw_data *ha = vha->hw;
sp = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
if (!sp)
return sp;
atomic_set(&sp->ref_count, 1);
sp->fcport = fcport;
sp->cmd = cmd;
sp->flags = 0;
CMD_SP(cmd) = (void *)sp;
sp->ctx = NULL;
return sp;
}
static int
qla2xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
{
scsi_qla_host_t *vha = shost_priv(cmd->device->host);
fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
[SCSI] update fc_transport for removal of block/unblock functions We recently went back to implement a board reset. When we perform the reset, we wanted to tear down the internal data structures and rebuild them. Unfortunately, when it came to the rport structure, things were odd. If we deleted them, the scsi targets and sdevs would be torn down. Not a good thing for a temporary reset. We could block the rports, but we either maintain the internal structures to keep the rport reference (perhaps even replicating what's in the transport), or we have to fatten the fc transport with new search routines to find the rport (and deal with a case of a dangling rport that the driver forgets). It dawned on me that we had actually reached this state incorrectly. When the fc transport first started, we did the block/unblock first, then added the rport interface. The purpose of block/unblock is to hide the temporary disappearance of the rport (e.g. being deleted, then readded). Why are we making the driver do the block/unblock ? We should be making the transport have only an rport add/delete, and the let the transport handle the block/unblock. So... This patch removes the existing fc_remote_port_block/unblock functions. It moves the block/unblock functionality into the fc_remote_port_add/delete functions. Updates for the lpfc driver are included. Qlogic driver updates are also enclosed, thanks to the contributions of Andrew Vasquez. [Note: the qla2xxx changes are relative to the scsi-misc-2.6 tree as of this morning - which does not include the recent patches sent by Andrew]. The zfcp driver does not use the block/unblock functions. One last comment: The resulting behavior feels very clean. The LLDD is concerned only with add/delete, which corresponds to the physical disappearance. However, the fact that the scsi target and sdevs are not immediately torn down after the LLDD calls delete causes an interesting scenario... the midlayer can call the xxx_slave_alloc and xxx_queuecommand functions with a sdev that is at the location the rport used to be. The driver must validate the device exists when it first enters these functions. In thinking about it, this has always been the case for the LLDD and these routines. The existing drivers already check for existence. However, this highlights that simple validation via data structure dereferencing needs to be watched. To deal with this, a new transport function, fc_remote_port_chkready() was created that LLDDs should call when they first enter these two routines. It validates the rport state, and returns a scsi result which could be returned. In addition to solving the above, it also creates consistent behavior from the LLDD's when the block and deletes are occuring. Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-18 16:03:35 +00:00
struct fc_rport *rport = starget_to_rport(scsi_target(cmd->device));
struct qla_hw_data *ha = vha->hw;
struct scsi_qla_host *base_vha = pci_get_drvdata(ha->pdev);
srb_t *sp;
int rval;
if (ha->flags.eeh_busy) {
if (ha->flags.pci_channel_io_perm_failure)
cmd->result = DID_NO_CONNECT << 16;
else
cmd->result = DID_REQUEUE << 16;
goto qc24_fail_command;
}
[SCSI] update fc_transport for removal of block/unblock functions We recently went back to implement a board reset. When we perform the reset, we wanted to tear down the internal data structures and rebuild them. Unfortunately, when it came to the rport structure, things were odd. If we deleted them, the scsi targets and sdevs would be torn down. Not a good thing for a temporary reset. We could block the rports, but we either maintain the internal structures to keep the rport reference (perhaps even replicating what's in the transport), or we have to fatten the fc transport with new search routines to find the rport (and deal with a case of a dangling rport that the driver forgets). It dawned on me that we had actually reached this state incorrectly. When the fc transport first started, we did the block/unblock first, then added the rport interface. The purpose of block/unblock is to hide the temporary disappearance of the rport (e.g. being deleted, then readded). Why are we making the driver do the block/unblock ? We should be making the transport have only an rport add/delete, and the let the transport handle the block/unblock. So... This patch removes the existing fc_remote_port_block/unblock functions. It moves the block/unblock functionality into the fc_remote_port_add/delete functions. Updates for the lpfc driver are included. Qlogic driver updates are also enclosed, thanks to the contributions of Andrew Vasquez. [Note: the qla2xxx changes are relative to the scsi-misc-2.6 tree as of this morning - which does not include the recent patches sent by Andrew]. The zfcp driver does not use the block/unblock functions. One last comment: The resulting behavior feels very clean. The LLDD is concerned only with add/delete, which corresponds to the physical disappearance. However, the fact that the scsi target and sdevs are not immediately torn down after the LLDD calls delete causes an interesting scenario... the midlayer can call the xxx_slave_alloc and xxx_queuecommand functions with a sdev that is at the location the rport used to be. The driver must validate the device exists when it first enters these functions. In thinking about it, this has always been the case for the LLDD and these routines. The existing drivers already check for existence. However, this highlights that simple validation via data structure dereferencing needs to be watched. To deal with this, a new transport function, fc_remote_port_chkready() was created that LLDDs should call when they first enter these two routines. It validates the rport state, and returns a scsi result which could be returned. In addition to solving the above, it also creates consistent behavior from the LLDD's when the block and deletes are occuring. Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-18 16:03:35 +00:00
rval = fc_remote_port_chkready(rport);
if (rval) {
cmd->result = rval;
goto qc24_fail_command;
}
if (!vha->flags.difdix_supported &&
scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) {
DEBUG2(qla_printk(KERN_ERR, ha,
"DIF Cap Not Reg, fail DIF capable cmd's:%x\n",
cmd->cmnd[0]));
cmd->result = DID_NO_CONNECT << 16;
goto qc24_fail_command;
}
if (atomic_read(&fcport->state) != FCS_ONLINE) {
if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD ||
atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
cmd->result = DID_NO_CONNECT << 16;
goto qc24_fail_command;
}
goto qc24_target_busy;
}
sp = qla2x00_get_new_sp(base_vha, fcport, cmd);
if (!sp)
goto qc24_host_busy;
rval = ha->isp_ops->start_scsi(sp);
if (rval != QLA_SUCCESS)
goto qc24_host_busy_free_sp;
return 0;
qc24_host_busy_free_sp:
qla2x00_sp_free_dma(sp);
mempool_free(sp, ha->srb_mempool);
qc24_host_busy:
return SCSI_MLQUEUE_HOST_BUSY;
qc24_target_busy:
return SCSI_MLQUEUE_TARGET_BUSY;
qc24_fail_command:
cmd->scsi_done(cmd);
return 0;
}
/*
* qla2x00_eh_wait_on_command
* Waits for the command to be returned by the Firmware for some
* max time.
*
* Input:
* cmd = Scsi Command to wait on.
*
* Return:
* Not Found : 0
* Found : 1
*/
static int
qla2x00_eh_wait_on_command(struct scsi_cmnd *cmd)
{
#define ABORT_POLLING_PERIOD 1000
#define ABORT_WAIT_ITER ((10 * 1000) / (ABORT_POLLING_PERIOD))
unsigned long wait_iter = ABORT_WAIT_ITER;
scsi_qla_host_t *vha = shost_priv(cmd->device->host);
struct qla_hw_data *ha = vha->hw;
int ret = QLA_SUCCESS;
if (unlikely(pci_channel_offline(ha->pdev)) || ha->flags.eeh_busy) {
DEBUG17(qla_printk(KERN_WARNING, ha, "return:eh_wait\n"));
return ret;
}
while (CMD_SP(cmd) && wait_iter--) {
msleep(ABORT_POLLING_PERIOD);
}
if (CMD_SP(cmd))
ret = QLA_FUNCTION_FAILED;
return ret;
}
/*
* qla2x00_wait_for_hba_online
* Wait till the HBA is online after going through
* <= MAX_RETRIES_OF_ISP_ABORT or
* finally HBA is disabled ie marked offline
*
* Input:
* ha - pointer to host adapter structure
*
* Note:
* Does context switching-Release SPIN_LOCK
* (if any) before calling this routine.
*
* Return:
* Success (Adapter is online) : 0
* Failed (Adapter is offline/disabled) : 1
*/
int
qla2x00_wait_for_hba_online(scsi_qla_host_t *vha)
{
int return_status;
unsigned long wait_online;
struct qla_hw_data *ha = vha->hw;
scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
while (((test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags)) ||
test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
ha->dpc_active) && time_before(jiffies, wait_online)) {
msleep(1000);
}
if (base_vha->flags.online)
return_status = QLA_SUCCESS;
else
return_status = QLA_FUNCTION_FAILED;
return (return_status);
}
/*
* qla2x00_wait_for_reset_ready
* Wait till the HBA is online after going through
* <= MAX_RETRIES_OF_ISP_ABORT or
* finally HBA is disabled ie marked offline or flash
* operations are in progress.
*
* Input:
* ha - pointer to host adapter structure
*
* Note:
* Does context switching-Release SPIN_LOCK
* (if any) before calling this routine.
*
* Return:
* Success (Adapter is online/no flash ops) : 0
* Failed (Adapter is offline/disabled/flash ops in progress) : 1
*/
static int
qla2x00_wait_for_reset_ready(scsi_qla_host_t *vha)
{
int return_status;
unsigned long wait_online;
struct qla_hw_data *ha = vha->hw;
scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
wait_online = jiffies + (MAX_LOOP_TIMEOUT * HZ);
while (((test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags)) ||
test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
ha->optrom_state != QLA_SWAITING ||
ha->dpc_active) && time_before(jiffies, wait_online))
msleep(1000);
if (base_vha->flags.online && ha->optrom_state == QLA_SWAITING)
return_status = QLA_SUCCESS;
else
return_status = QLA_FUNCTION_FAILED;
DEBUG2(printk("%s return_status=%d\n", __func__, return_status));
return return_status;
}
int
qla2x00_wait_for_chip_reset(scsi_qla_host_t *vha)
{
int return_status;
unsigned long wait_reset;
struct qla_hw_data *ha = vha->hw;
scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
wait_reset = jiffies + (MAX_LOOP_TIMEOUT * HZ);
while (((test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags)) ||
test_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags) ||
test_bit(ISP_ABORT_RETRY, &base_vha->dpc_flags) ||
ha->dpc_active) && time_before(jiffies, wait_reset)) {
msleep(1000);
if (!test_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags) &&
ha->flags.chip_reset_done)
break;
}
if (ha->flags.chip_reset_done)
return_status = QLA_SUCCESS;
else
return_status = QLA_FUNCTION_FAILED;
return return_status;
}
/*
* qla2x00_wait_for_loop_ready
* Wait for MAX_LOOP_TIMEOUT(5 min) value for loop
* to be in LOOP_READY state.
* Input:
* ha - pointer to host adapter structure
*
* Note:
* Does context switching-Release SPIN_LOCK
* (if any) before calling this routine.
*
*
* Return:
* Success (LOOP_READY) : 0
* Failed (LOOP_NOT_READY) : 1
*/
static inline int
qla2x00_wait_for_loop_ready(scsi_qla_host_t *vha)
{
int return_status = QLA_SUCCESS;
unsigned long loop_timeout ;
struct qla_hw_data *ha = vha->hw;
scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
/* wait for 5 min at the max for loop to be ready */
loop_timeout = jiffies + (MAX_LOOP_TIMEOUT * HZ);
while ((!atomic_read(&base_vha->loop_down_timer) &&
atomic_read(&base_vha->loop_state) == LOOP_DOWN) ||
atomic_read(&base_vha->loop_state) != LOOP_READY) {
if (atomic_read(&base_vha->loop_state) == LOOP_DEAD) {
return_status = QLA_FUNCTION_FAILED;
break;
}
msleep(1000);
if (time_after_eq(jiffies, loop_timeout)) {
return_status = QLA_FUNCTION_FAILED;
break;
}
}
return (return_status);
}
static void
sp_get(struct srb *sp)
{
atomic_inc(&sp->ref_count);
}
/**************************************************************************
* qla2xxx_eh_abort
*
* Description:
* The abort function will abort the specified command.
*
* Input:
* cmd = Linux SCSI command packet to be aborted.
*
* Returns:
* Either SUCCESS or FAILED.
*
* Note:
* Only return FAILED if command not returned by firmware.
**************************************************************************/
static int
qla2xxx_eh_abort(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *vha = shost_priv(cmd->device->host);
srb_t *sp;
int ret;
unsigned int id, lun;
unsigned long flags;
int wait = 0;
struct qla_hw_data *ha = vha->hw;
if (!CMD_SP(cmd))
return SUCCESS;
ret = fc_block_scsi_eh(cmd);
if (ret != 0)
return ret;
ret = SUCCESS;
id = cmd->device->id;
lun = cmd->device->lun;
spin_lock_irqsave(&ha->hardware_lock, flags);
sp = (srb_t *) CMD_SP(cmd);
if (!sp) {
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return SUCCESS;
}
DEBUG2(printk("%s(%ld): aborting sp %p from RISC.",
__func__, vha->host_no, sp));
/* Get a reference to the sp and drop the lock.*/
sp_get(sp);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (ha->isp_ops->abort_command(sp)) {
DEBUG2(printk("%s(%ld): abort_command "
"mbx failed.\n", __func__, vha->host_no));
ret = FAILED;
} else {
DEBUG3(printk("%s(%ld): abort_command "
"mbx success.\n", __func__, vha->host_no));
wait = 1;
}
qla2x00_sp_compl(ha, sp);
/* Wait for the command to be returned. */
if (wait) {
if (qla2x00_eh_wait_on_command(cmd) != QLA_SUCCESS) {
qla_printk(KERN_ERR, ha,
"scsi(%ld:%d:%d): Abort handler timed out -- %x.\n",
vha->host_no, id, lun, ret);
ret = FAILED;
}
}
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d): Abort command issued -- %d %x.\n",
vha->host_no, id, lun, wait, ret);
return ret;
}
int
qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *vha, unsigned int t,
unsigned int l, enum nexus_wait_type type)
{
int cnt, match, status;
unsigned long flags;
struct qla_hw_data *ha = vha->hw;
struct req_que *req;
srb_t *sp;
status = QLA_SUCCESS;
spin_lock_irqsave(&ha->hardware_lock, flags);
req = vha->req;
for (cnt = 1; status == QLA_SUCCESS &&
cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
sp = req->outstanding_cmds[cnt];
if (!sp)
continue;
if ((sp->ctx) && !IS_PROT_IO(sp))
continue;
if (vha->vp_idx != sp->fcport->vha->vp_idx)
continue;
match = 0;
switch (type) {
case WAIT_HOST:
match = 1;
break;
case WAIT_TARGET:
match = sp->cmd->device->id == t;
break;
case WAIT_LUN:
match = (sp->cmd->device->id == t &&
sp->cmd->device->lun == l);
break;
}
if (!match)
continue;
spin_unlock_irqrestore(&ha->hardware_lock, flags);
status = qla2x00_eh_wait_on_command(sp->cmd);
spin_lock_irqsave(&ha->hardware_lock, flags);
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
return status;
}
static char *reset_errors[] = {
"HBA not online",
"HBA not ready",
"Task management failed",
"Waiting for command completions",
};
static int
__qla2xxx_eh_generic_reset(char *name, enum nexus_wait_type type,
struct scsi_cmnd *cmd, int (*do_reset)(struct fc_port *, unsigned int, int))
{
scsi_qla_host_t *vha = shost_priv(cmd->device->host);
fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
int err;
if (!fcport)
return FAILED;
err = fc_block_scsi_eh(cmd);
if (err != 0)
return err;
qla_printk(KERN_INFO, vha->hw, "scsi(%ld:%d:%d): %s RESET ISSUED.\n",
vha->host_no, cmd->device->id, cmd->device->lun, name);
err = 0;
if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
goto eh_reset_failed;
err = 1;
if (qla2x00_wait_for_loop_ready(vha) != QLA_SUCCESS)
goto eh_reset_failed;
err = 2;
if (do_reset(fcport, cmd->device->lun, cmd->request->cpu + 1)
!= QLA_SUCCESS)
goto eh_reset_failed;
err = 3;
if (qla2x00_eh_wait_for_pending_commands(vha, cmd->device->id,
cmd->device->lun, type) != QLA_SUCCESS)
goto eh_reset_failed;
qla_printk(KERN_INFO, vha->hw, "scsi(%ld:%d:%d): %s RESET SUCCEEDED.\n",
vha->host_no, cmd->device->id, cmd->device->lun, name);
return SUCCESS;
eh_reset_failed:
qla_printk(KERN_INFO, vha->hw, "scsi(%ld:%d:%d): %s RESET FAILED: %s.\n"
, vha->host_no, cmd->device->id, cmd->device->lun, name,
reset_errors[err]);
return FAILED;
}
static int
qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *vha = shost_priv(cmd->device->host);
struct qla_hw_data *ha = vha->hw;
return __qla2xxx_eh_generic_reset("DEVICE", WAIT_LUN, cmd,
ha->isp_ops->lun_reset);
}
static int
qla2xxx_eh_target_reset(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *vha = shost_priv(cmd->device->host);
struct qla_hw_data *ha = vha->hw;
return __qla2xxx_eh_generic_reset("TARGET", WAIT_TARGET, cmd,
ha->isp_ops->target_reset);
}
/**************************************************************************
* qla2xxx_eh_bus_reset
*
* Description:
* The bus reset function will reset the bus and abort any executing
* commands.
*
* Input:
* cmd = Linux SCSI command packet of the command that cause the
* bus reset.
*
* Returns:
* SUCCESS/FAILURE (defined as macro in scsi.h).
*
**************************************************************************/
static int
qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *vha = shost_priv(cmd->device->host);
fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
int ret = FAILED;
unsigned int id, lun;
id = cmd->device->id;
lun = cmd->device->lun;
if (!fcport)
return ret;
ret = fc_block_scsi_eh(cmd);
if (ret != 0)
return ret;
ret = FAILED;
qla_printk(KERN_INFO, vha->hw,
"scsi(%ld:%d:%d): BUS RESET ISSUED.\n", vha->host_no, id, lun);
if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS) {
DEBUG2(printk("%s failed:board disabled\n",__func__));
goto eh_bus_reset_done;
}
if (qla2x00_wait_for_loop_ready(vha) == QLA_SUCCESS) {
if (qla2x00_loop_reset(vha) == QLA_SUCCESS)
ret = SUCCESS;
}
if (ret == FAILED)
goto eh_bus_reset_done;
/* Flush outstanding commands. */
if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0, WAIT_HOST) !=
QLA_SUCCESS)
ret = FAILED;
eh_bus_reset_done:
qla_printk(KERN_INFO, vha->hw, "%s: reset %s\n", __func__,
(ret == FAILED) ? "failed" : "succeded");
return ret;
}
/**************************************************************************
* qla2xxx_eh_host_reset
*
* Description:
* The reset function will reset the Adapter.
*
* Input:
* cmd = Linux SCSI command packet of the command that cause the
* adapter reset.
*
* Returns:
* Either SUCCESS or FAILED.
*
* Note:
**************************************************************************/
static int
qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *vha = shost_priv(cmd->device->host);
fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
struct qla_hw_data *ha = vha->hw;
int ret = FAILED;
unsigned int id, lun;
scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
id = cmd->device->id;
lun = cmd->device->lun;
if (!fcport)
return ret;
ret = fc_block_scsi_eh(cmd);
if (ret != 0)
return ret;
ret = FAILED;
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d): ADAPTER RESET ISSUED.\n", vha->host_no, id, lun);
if (qla2x00_wait_for_reset_ready(vha) != QLA_SUCCESS)
goto eh_host_reset_lock;
/*
* Fixme-may be dpc thread is active and processing
* loop_resync,so wait a while for it to
* be completed and then issue big hammer.Otherwise
* it may cause I/O failure as big hammer marks the
* devices as lost kicking of the port_down_timer
* while dpc is stuck for the mailbox to complete.
*/
qla2x00_wait_for_loop_ready(vha);
if (vha != base_vha) {
if (qla2x00_vp_abort_isp(vha))
goto eh_host_reset_lock;
} else {
if (IS_QLA82XX(vha->hw)) {
if (!qla82xx_fcoe_ctx_reset(vha)) {
/* Ctx reset success */
ret = SUCCESS;
goto eh_host_reset_lock;
}
/* fall thru if ctx reset failed */
}
if (ha->wq)
flush_workqueue(ha->wq);
set_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
if (ha->isp_ops->abort_isp(base_vha)) {
clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
/* failed. schedule dpc to try */
set_bit(ISP_ABORT_NEEDED, &base_vha->dpc_flags);
if (qla2x00_wait_for_hba_online(vha) != QLA_SUCCESS)
goto eh_host_reset_lock;
}
clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
}
/* Waiting for command to be returned to OS.*/
if (qla2x00_eh_wait_for_pending_commands(vha, 0, 0, WAIT_HOST) ==
QLA_SUCCESS)
ret = SUCCESS;
eh_host_reset_lock:
qla_printk(KERN_INFO, ha, "%s: reset %s\n", __func__,
(ret == FAILED) ? "failed" : "succeded");
return ret;
}
/*
* qla2x00_loop_reset
* Issue loop reset.
*
* Input:
* ha = adapter block pointer.
*
* Returns:
* 0 = success
*/
int
qla2x00_loop_reset(scsi_qla_host_t *vha)
{
int ret;
struct fc_port *fcport;
struct qla_hw_data *ha = vha->hw;
if (ql2xtargetreset == 1 && ha->flags.enable_target_reset) {
list_for_each_entry(fcport, &vha->vp_fcports, list) {
if (fcport->port_type != FCT_TARGET)
continue;
ret = ha->isp_ops->target_reset(fcport, 0, 0);
if (ret != QLA_SUCCESS) {
DEBUG2_3(printk("%s(%ld): bus_reset failed: "
"target_reset=%d d_id=%x.\n", __func__,
vha->host_no, ret, fcport->d_id.b24));
}
}
}
if (ha->flags.enable_lip_full_login && !IS_QLA8XXX_TYPE(ha)) {
ret = qla2x00_full_login_lip(vha);
if (ret != QLA_SUCCESS) {
DEBUG2_3(printk("%s(%ld): failed: "
"full_login_lip=%d.\n", __func__, vha->host_no,
ret));
}
atomic_set(&vha->loop_state, LOOP_DOWN);
atomic_set(&vha->loop_down_timer, LOOP_DOWN_TIME);
qla2x00_mark_all_devices_lost(vha, 0);
qla2x00_wait_for_loop_ready(vha);
}
if (ha->flags.enable_lip_reset) {
ret = qla2x00_lip_reset(vha);
if (ret != QLA_SUCCESS) {
DEBUG2_3(printk("%s(%ld): failed: "
"lip_reset=%d.\n", __func__, vha->host_no, ret));
} else
qla2x00_wait_for_loop_ready(vha);
}
/* Issue marker command only when we are going to start the I/O */
vha->marker_needed = 1;
return QLA_SUCCESS;
}
void
qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
{
int que, cnt;
unsigned long flags;
srb_t *sp;
struct srb_ctx *ctx;
struct qla_hw_data *ha = vha->hw;
struct req_que *req;
spin_lock_irqsave(&ha->hardware_lock, flags);
for (que = 0; que < ha->max_req_queues; que++) {
req = ha->req_q_map[que];
if (!req)
continue;
for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
sp = req->outstanding_cmds[cnt];
if (sp) {
req->outstanding_cmds[cnt] = NULL;
if (!sp->ctx ||
(sp->flags & SRB_FCP_CMND_DMA_VALID) ||
IS_PROT_IO(sp)) {
sp->cmd->result = res;
qla2x00_sp_compl(ha, sp);
} else {
ctx = sp->ctx;
if (ctx->type == SRB_LOGIN_CMD ||
ctx->type == SRB_LOGOUT_CMD) {
ctx->u.iocb_cmd->free(sp);
} else {
struct fc_bsg_job *bsg_job =
ctx->u.bsg_job;
if (bsg_job->request->msgcode
== FC_BSG_HST_CT)
kfree(sp->fcport);
bsg_job->req->errors = 0;
bsg_job->reply->result = res;
bsg_job->job_done(bsg_job);
kfree(sp->ctx);
mempool_free(sp,
ha->srb_mempool);
}
}
}
}
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
static int
qla2xxx_slave_alloc(struct scsi_device *sdev)
{
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
[SCSI] update fc_transport for removal of block/unblock functions We recently went back to implement a board reset. When we perform the reset, we wanted to tear down the internal data structures and rebuild them. Unfortunately, when it came to the rport structure, things were odd. If we deleted them, the scsi targets and sdevs would be torn down. Not a good thing for a temporary reset. We could block the rports, but we either maintain the internal structures to keep the rport reference (perhaps even replicating what's in the transport), or we have to fatten the fc transport with new search routines to find the rport (and deal with a case of a dangling rport that the driver forgets). It dawned on me that we had actually reached this state incorrectly. When the fc transport first started, we did the block/unblock first, then added the rport interface. The purpose of block/unblock is to hide the temporary disappearance of the rport (e.g. being deleted, then readded). Why are we making the driver do the block/unblock ? We should be making the transport have only an rport add/delete, and the let the transport handle the block/unblock. So... This patch removes the existing fc_remote_port_block/unblock functions. It moves the block/unblock functionality into the fc_remote_port_add/delete functions. Updates for the lpfc driver are included. Qlogic driver updates are also enclosed, thanks to the contributions of Andrew Vasquez. [Note: the qla2xxx changes are relative to the scsi-misc-2.6 tree as of this morning - which does not include the recent patches sent by Andrew]. The zfcp driver does not use the block/unblock functions. One last comment: The resulting behavior feels very clean. The LLDD is concerned only with add/delete, which corresponds to the physical disappearance. However, the fact that the scsi target and sdevs are not immediately torn down after the LLDD calls delete causes an interesting scenario... the midlayer can call the xxx_slave_alloc and xxx_queuecommand functions with a sdev that is at the location the rport used to be. The driver must validate the device exists when it first enters these functions. In thinking about it, this has always been the case for the LLDD and these routines. The existing drivers already check for existence. However, this highlights that simple validation via data structure dereferencing needs to be watched. To deal with this, a new transport function, fc_remote_port_chkready() was created that LLDDs should call when they first enter these two routines. It validates the rport state, and returns a scsi result which could be returned. In addition to solving the above, it also creates consistent behavior from the LLDD's when the block and deletes are occuring. Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-18 16:03:35 +00:00
if (!rport || fc_remote_port_chkready(rport))
return -ENXIO;
[SCSI] update fc_transport for removal of block/unblock functions We recently went back to implement a board reset. When we perform the reset, we wanted to tear down the internal data structures and rebuild them. Unfortunately, when it came to the rport structure, things were odd. If we deleted them, the scsi targets and sdevs would be torn down. Not a good thing for a temporary reset. We could block the rports, but we either maintain the internal structures to keep the rport reference (perhaps even replicating what's in the transport), or we have to fatten the fc transport with new search routines to find the rport (and deal with a case of a dangling rport that the driver forgets). It dawned on me that we had actually reached this state incorrectly. When the fc transport first started, we did the block/unblock first, then added the rport interface. The purpose of block/unblock is to hide the temporary disappearance of the rport (e.g. being deleted, then readded). Why are we making the driver do the block/unblock ? We should be making the transport have only an rport add/delete, and the let the transport handle the block/unblock. So... This patch removes the existing fc_remote_port_block/unblock functions. It moves the block/unblock functionality into the fc_remote_port_add/delete functions. Updates for the lpfc driver are included. Qlogic driver updates are also enclosed, thanks to the contributions of Andrew Vasquez. [Note: the qla2xxx changes are relative to the scsi-misc-2.6 tree as of this morning - which does not include the recent patches sent by Andrew]. The zfcp driver does not use the block/unblock functions. One last comment: The resulting behavior feels very clean. The LLDD is concerned only with add/delete, which corresponds to the physical disappearance. However, the fact that the scsi target and sdevs are not immediately torn down after the LLDD calls delete causes an interesting scenario... the midlayer can call the xxx_slave_alloc and xxx_queuecommand functions with a sdev that is at the location the rport used to be. The driver must validate the device exists when it first enters these functions. In thinking about it, this has always been the case for the LLDD and these routines. The existing drivers already check for existence. However, this highlights that simple validation via data structure dereferencing needs to be watched. To deal with this, a new transport function, fc_remote_port_chkready() was created that LLDDs should call when they first enter these two routines. It validates the rport state, and returns a scsi result which could be returned. In addition to solving the above, it also creates consistent behavior from the LLDD's when the block and deletes are occuring. Rejections fixed up and Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-10-18 16:03:35 +00:00
sdev->hostdata = *(fc_port_t **)rport->dd_data;
return 0;
}
static int
qla2xxx_slave_configure(struct scsi_device *sdev)
{
scsi_qla_host_t *vha = shost_priv(sdev->host);
struct req_que *req = vha->req;
if (sdev->tagged_supported)
scsi_activate_tcq(sdev, req->max_q_depth);
else
scsi_deactivate_tcq(sdev, req->max_q_depth);
return 0;
}
static void
qla2xxx_slave_destroy(struct scsi_device *sdev)
{
sdev->hostdata = NULL;
}
static void qla2x00_handle_queue_full(struct scsi_device *sdev, int qdepth)
{
fc_port_t *fcport = (struct fc_port *) sdev->hostdata;
if (!scsi_track_queue_full(sdev, qdepth))
return;
DEBUG2(qla_printk(KERN_INFO, fcport->vha->hw,
"scsi(%ld:%d:%d:%d): Queue depth adjusted-down to %d.\n",
fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
sdev->queue_depth));
}
static void qla2x00_adjust_sdev_qdepth_up(struct scsi_device *sdev, int qdepth)
{
fc_port_t *fcport = sdev->hostdata;
struct scsi_qla_host *vha = fcport->vha;
struct qla_hw_data *ha = vha->hw;
struct req_que *req = NULL;
req = vha->req;
if (!req)
return;
if (req->max_q_depth <= sdev->queue_depth || req->max_q_depth < qdepth)
return;
if (sdev->ordered_tags)
scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, qdepth);
else
scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, qdepth);
DEBUG2(qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d:%d): Queue depth adjusted-up to %d.\n",
fcport->vha->host_no, sdev->channel, sdev->id, sdev->lun,
sdev->queue_depth));
}
static int
qla2x00_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason)
{
switch (reason) {
case SCSI_QDEPTH_DEFAULT:
scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), qdepth);
break;
case SCSI_QDEPTH_QFULL:
qla2x00_handle_queue_full(sdev, qdepth);
break;
case SCSI_QDEPTH_RAMP_UP:
qla2x00_adjust_sdev_qdepth_up(sdev, qdepth);
break;
default:
return -EOPNOTSUPP;
}
return sdev->queue_depth;
}
static int
qla2x00_change_queue_type(struct scsi_device *sdev, int tag_type)
{
if (sdev->tagged_supported) {
scsi_set_tag_type(sdev, tag_type);
if (tag_type)
scsi_activate_tcq(sdev, sdev->queue_depth);
else
scsi_deactivate_tcq(sdev, sdev->queue_depth);
} else
tag_type = 0;
return tag_type;
}
/**
* qla2x00_config_dma_addressing() - Configure OS DMA addressing method.
* @ha: HA context
*
* At exit, the @ha's flags.enable_64bit_addressing set to indicated
* supported addressing method.
*/
static void
qla2x00_config_dma_addressing(struct qla_hw_data *ha)
{
/* Assume a 32bit DMA mask. */
ha->flags.enable_64bit_addressing = 0;
if (!dma_set_mask(&ha->pdev->dev, DMA_BIT_MASK(64))) {
/* Any upper-dword bits set? */
if (MSD(dma_get_required_mask(&ha->pdev->dev)) &&
!pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
/* Ok, a 64bit DMA mask is applicable. */
ha->flags.enable_64bit_addressing = 1;
ha->isp_ops->calc_req_entries = qla2x00_calc_iocbs_64;
ha->isp_ops->build_iocbs = qla2x00_build_scsi_iocbs_64;
return;
}
}
dma_set_mask(&ha->pdev->dev, DMA_BIT_MASK(32));
pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(32));
}
static void
qla2x00_enable_intrs(struct qla_hw_data *ha)
{
unsigned long flags = 0;
struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->interrupts_on = 1;
/* enable risc and host interrupts */
WRT_REG_WORD(&reg->ictrl, ICR_EN_INT | ICR_EN_RISC);
RD_REG_WORD(&reg->ictrl);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
static void
qla2x00_disable_intrs(struct qla_hw_data *ha)
{
unsigned long flags = 0;
struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->interrupts_on = 0;
/* disable risc and host interrupts */
WRT_REG_WORD(&reg->ictrl, 0);
RD_REG_WORD(&reg->ictrl);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
static void
qla24xx_enable_intrs(struct qla_hw_data *ha)
{
unsigned long flags = 0;
struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->interrupts_on = 1;
WRT_REG_DWORD(&reg->ictrl, ICRX_EN_RISC_INT);
RD_REG_DWORD(&reg->ictrl);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
static void
qla24xx_disable_intrs(struct qla_hw_data *ha)
{
unsigned long flags = 0;
struct device_reg_24xx __iomem *reg = &ha->iobase->isp24;
if (IS_NOPOLLING_TYPE(ha))
return;
spin_lock_irqsave(&ha->hardware_lock, flags);
ha->interrupts_on = 0;
WRT_REG_DWORD(&reg->ictrl, 0);
RD_REG_DWORD(&reg->ictrl);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
static struct isp_operations qla2100_isp_ops = {
.pci_config = qla2100_pci_config,
.reset_chip = qla2x00_reset_chip,
.chip_diag = qla2x00_chip_diag,
.config_rings = qla2x00_config_rings,
.reset_adapter = qla2x00_reset_adapter,
.nvram_config = qla2x00_nvram_config,
.update_fw_options = qla2x00_update_fw_options,
.load_risc = qla2x00_load_risc,
.pci_info_str = qla2x00_pci_info_str,
.fw_version_str = qla2x00_fw_version_str,
.intr_handler = qla2100_intr_handler,
.enable_intrs = qla2x00_enable_intrs,
.disable_intrs = qla2x00_disable_intrs,
.abort_command = qla2x00_abort_command,
.target_reset = qla2x00_abort_target,
.lun_reset = qla2x00_lun_reset,
.fabric_login = qla2x00_login_fabric,
.fabric_logout = qla2x00_fabric_logout,
.calc_req_entries = qla2x00_calc_iocbs_32,
.build_iocbs = qla2x00_build_scsi_iocbs_32,
.prep_ms_iocb = qla2x00_prep_ms_iocb,
.prep_ms_fdmi_iocb = qla2x00_prep_ms_fdmi_iocb,
.read_nvram = qla2x00_read_nvram_data,
.write_nvram = qla2x00_write_nvram_data,
.fw_dump = qla2100_fw_dump,
.beacon_on = NULL,
.beacon_off = NULL,
.beacon_blink = NULL,
.read_optrom = qla2x00_read_optrom_data,
.write_optrom = qla2x00_write_optrom_data,
.get_flash_version = qla2x00_get_flash_version,
.start_scsi = qla2x00_start_scsi,
.abort_isp = qla2x00_abort_isp,
};
static struct isp_operations qla2300_isp_ops = {
.pci_config = qla2300_pci_config,
.reset_chip = qla2x00_reset_chip,
.chip_diag = qla2x00_chip_diag,
.config_rings = qla2x00_config_rings,
.reset_adapter = qla2x00_reset_adapter,
.nvram_config = qla2x00_nvram_config,
.update_fw_options = qla2x00_update_fw_options,
.load_risc = qla2x00_load_risc,
.pci_info_str = qla2x00_pci_info_str,
.fw_version_str = qla2x00_fw_version_str,
.intr_handler = qla2300_intr_handler,
.enable_intrs = qla2x00_enable_intrs,
.disable_intrs = qla2x00_disable_intrs,
.abort_command = qla2x00_abort_command,
.target_reset = qla2x00_abort_target,
.lun_reset = qla2x00_lun_reset,
.fabric_login = qla2x00_login_fabric,
.fabric_logout = qla2x00_fabric_logout,
.calc_req_entries = qla2x00_calc_iocbs_32,
.build_iocbs = qla2x00_build_scsi_iocbs_32,
.prep_ms_iocb = qla2x00_prep_ms_iocb,
.prep_ms_fdmi_iocb = qla2x00_prep_ms_fdmi_iocb,
.read_nvram = qla2x00_read_nvram_data,
.write_nvram = qla2x00_write_nvram_data,
.fw_dump = qla2300_fw_dump,
.beacon_on = qla2x00_beacon_on,
.beacon_off = qla2x00_beacon_off,
.beacon_blink = qla2x00_beacon_blink,
.read_optrom = qla2x00_read_optrom_data,
.write_optrom = qla2x00_write_optrom_data,
.get_flash_version = qla2x00_get_flash_version,
.start_scsi = qla2x00_start_scsi,
.abort_isp = qla2x00_abort_isp,
};
static struct isp_operations qla24xx_isp_ops = {
.pci_config = qla24xx_pci_config,
.reset_chip = qla24xx_reset_chip,
.chip_diag = qla24xx_chip_diag,
.config_rings = qla24xx_config_rings,
.reset_adapter = qla24xx_reset_adapter,
.nvram_config = qla24xx_nvram_config,
.update_fw_options = qla24xx_update_fw_options,
.load_risc = qla24xx_load_risc,
.pci_info_str = qla24xx_pci_info_str,
.fw_version_str = qla24xx_fw_version_str,
.intr_handler = qla24xx_intr_handler,
.enable_intrs = qla24xx_enable_intrs,
.disable_intrs = qla24xx_disable_intrs,
.abort_command = qla24xx_abort_command,
.target_reset = qla24xx_abort_target,
.lun_reset = qla24xx_lun_reset,
.fabric_login = qla24xx_login_fabric,
.fabric_logout = qla24xx_fabric_logout,
.calc_req_entries = NULL,
.build_iocbs = NULL,
.prep_ms_iocb = qla24xx_prep_ms_iocb,
.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb,
.read_nvram = qla24xx_read_nvram_data,
.write_nvram = qla24xx_write_nvram_data,
.fw_dump = qla24xx_fw_dump,
.beacon_on = qla24xx_beacon_on,
.beacon_off = qla24xx_beacon_off,
.beacon_blink = qla24xx_beacon_blink,
.read_optrom = qla24xx_read_optrom_data,
.write_optrom = qla24xx_write_optrom_data,
.get_flash_version = qla24xx_get_flash_version,
.start_scsi = qla24xx_start_scsi,
.abort_isp = qla2x00_abort_isp,
};
static struct isp_operations qla25xx_isp_ops = {
.pci_config = qla25xx_pci_config,
.reset_chip = qla24xx_reset_chip,
.chip_diag = qla24xx_chip_diag,
.config_rings = qla24xx_config_rings,
.reset_adapter = qla24xx_reset_adapter,
.nvram_config = qla24xx_nvram_config,
.update_fw_options = qla24xx_update_fw_options,
.load_risc = qla24xx_load_risc,
.pci_info_str = qla24xx_pci_info_str,
.fw_version_str = qla24xx_fw_version_str,
.intr_handler = qla24xx_intr_handler,
.enable_intrs = qla24xx_enable_intrs,
.disable_intrs = qla24xx_disable_intrs,
.abort_command = qla24xx_abort_command,
.target_reset = qla24xx_abort_target,
.lun_reset = qla24xx_lun_reset,
.fabric_login = qla24xx_login_fabric,
.fabric_logout = qla24xx_fabric_logout,
.calc_req_entries = NULL,
.build_iocbs = NULL,
.prep_ms_iocb = qla24xx_prep_ms_iocb,
.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb,
.read_nvram = qla25xx_read_nvram_data,
.write_nvram = qla25xx_write_nvram_data,
.fw_dump = qla25xx_fw_dump,
.beacon_on = qla24xx_beacon_on,
.beacon_off = qla24xx_beacon_off,
.beacon_blink = qla24xx_beacon_blink,
.read_optrom = qla25xx_read_optrom_data,
.write_optrom = qla24xx_write_optrom_data,
.get_flash_version = qla24xx_get_flash_version,
.start_scsi = qla24xx_dif_start_scsi,
.abort_isp = qla2x00_abort_isp,
};
static struct isp_operations qla81xx_isp_ops = {
.pci_config = qla25xx_pci_config,
.reset_chip = qla24xx_reset_chip,
.chip_diag = qla24xx_chip_diag,
.config_rings = qla24xx_config_rings,
.reset_adapter = qla24xx_reset_adapter,
.nvram_config = qla81xx_nvram_config,
.update_fw_options = qla81xx_update_fw_options,
.load_risc = qla81xx_load_risc,
.pci_info_str = qla24xx_pci_info_str,
.fw_version_str = qla24xx_fw_version_str,
.intr_handler = qla24xx_intr_handler,
.enable_intrs = qla24xx_enable_intrs,
.disable_intrs = qla24xx_disable_intrs,
.abort_command = qla24xx_abort_command,
.target_reset = qla24xx_abort_target,
.lun_reset = qla24xx_lun_reset,
.fabric_login = qla24xx_login_fabric,
.fabric_logout = qla24xx_fabric_logout,
.calc_req_entries = NULL,
.build_iocbs = NULL,
.prep_ms_iocb = qla24xx_prep_ms_iocb,
.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb,
.read_nvram = NULL,
.write_nvram = NULL,
.fw_dump = qla81xx_fw_dump,
.beacon_on = qla24xx_beacon_on,
.beacon_off = qla24xx_beacon_off,
.beacon_blink = qla24xx_beacon_blink,
.read_optrom = qla25xx_read_optrom_data,
.write_optrom = qla24xx_write_optrom_data,
.get_flash_version = qla24xx_get_flash_version,
.start_scsi = qla24xx_dif_start_scsi,
.abort_isp = qla2x00_abort_isp,
};
static struct isp_operations qla82xx_isp_ops = {
.pci_config = qla82xx_pci_config,
.reset_chip = qla82xx_reset_chip,
.chip_diag = qla24xx_chip_diag,
.config_rings = qla82xx_config_rings,
.reset_adapter = qla24xx_reset_adapter,
.nvram_config = qla81xx_nvram_config,
.update_fw_options = qla24xx_update_fw_options,
.load_risc = qla82xx_load_risc,
.pci_info_str = qla82xx_pci_info_str,
.fw_version_str = qla24xx_fw_version_str,
.intr_handler = qla82xx_intr_handler,
.enable_intrs = qla82xx_enable_intrs,
.disable_intrs = qla82xx_disable_intrs,
.abort_command = qla24xx_abort_command,
.target_reset = qla24xx_abort_target,
.lun_reset = qla24xx_lun_reset,
.fabric_login = qla24xx_login_fabric,
.fabric_logout = qla24xx_fabric_logout,
.calc_req_entries = NULL,
.build_iocbs = NULL,
.prep_ms_iocb = qla24xx_prep_ms_iocb,
.prep_ms_fdmi_iocb = qla24xx_prep_ms_fdmi_iocb,
.read_nvram = qla24xx_read_nvram_data,
.write_nvram = qla24xx_write_nvram_data,
.fw_dump = qla24xx_fw_dump,
.beacon_on = qla24xx_beacon_on,
.beacon_off = qla24xx_beacon_off,
.beacon_blink = qla24xx_beacon_blink,
.read_optrom = qla82xx_read_optrom_data,
.write_optrom = qla82xx_write_optrom_data,
.get_flash_version = qla24xx_get_flash_version,
.start_scsi = qla82xx_start_scsi,
.abort_isp = qla82xx_abort_isp,
};
static inline void
qla2x00_set_isp_flags(struct qla_hw_data *ha)
{
ha->device_type = DT_EXTENDED_IDS;
switch (ha->pdev->device) {
case PCI_DEVICE_ID_QLOGIC_ISP2100:
ha->device_type |= DT_ISP2100;
ha->device_type &= ~DT_EXTENDED_IDS;
ha->fw_srisc_address = RISC_START_ADDRESS_2100;
break;
case PCI_DEVICE_ID_QLOGIC_ISP2200:
ha->device_type |= DT_ISP2200;
ha->device_type &= ~DT_EXTENDED_IDS;
ha->fw_srisc_address = RISC_START_ADDRESS_2100;
break;
case PCI_DEVICE_ID_QLOGIC_ISP2300:
ha->device_type |= DT_ISP2300;
ha->device_type |= DT_ZIO_SUPPORTED;
ha->fw_srisc_address = RISC_START_ADDRESS_2300;
break;
case PCI_DEVICE_ID_QLOGIC_ISP2312:
ha->device_type |= DT_ISP2312;
ha->device_type |= DT_ZIO_SUPPORTED;
ha->fw_srisc_address = RISC_START_ADDRESS_2300;
break;
case PCI_DEVICE_ID_QLOGIC_ISP2322:
ha->device_type |= DT_ISP2322;
ha->device_type |= DT_ZIO_SUPPORTED;
if (ha->pdev->subsystem_vendor == 0x1028 &&
ha->pdev->subsystem_device == 0x0170)
ha->device_type |= DT_OEM_001;
ha->fw_srisc_address = RISC_START_ADDRESS_2300;
break;
case PCI_DEVICE_ID_QLOGIC_ISP6312:
ha->device_type |= DT_ISP6312;
ha->fw_srisc_address = RISC_START_ADDRESS_2300;
break;
case PCI_DEVICE_ID_QLOGIC_ISP6322:
ha->device_type |= DT_ISP6322;
ha->fw_srisc_address = RISC_START_ADDRESS_2300;
break;
case PCI_DEVICE_ID_QLOGIC_ISP2422:
ha->device_type |= DT_ISP2422;
ha->device_type |= DT_ZIO_SUPPORTED;
ha->device_type |= DT_FWI2;
ha->device_type |= DT_IIDMA;
ha->fw_srisc_address = RISC_START_ADDRESS_2400;
break;
case PCI_DEVICE_ID_QLOGIC_ISP2432:
ha->device_type |= DT_ISP2432;
ha->device_type |= DT_ZIO_SUPPORTED;
ha->device_type |= DT_FWI2;
ha->device_type |= DT_IIDMA;
ha->fw_srisc_address = RISC_START_ADDRESS_2400;
break;
case PCI_DEVICE_ID_QLOGIC_ISP8432:
ha->device_type |= DT_ISP8432;
ha->device_type |= DT_ZIO_SUPPORTED;
ha->device_type |= DT_FWI2;
ha->device_type |= DT_IIDMA;
ha->fw_srisc_address = RISC_START_ADDRESS_2400;
break;
case PCI_DEVICE_ID_QLOGIC_ISP5422:
ha->device_type |= DT_ISP5422;
ha->device_type |= DT_FWI2;
ha->fw_srisc_address = RISC_START_ADDRESS_2400;
break;
case PCI_DEVICE_ID_QLOGIC_ISP5432:
ha->device_type |= DT_ISP5432;
ha->device_type |= DT_FWI2;
ha->fw_srisc_address = RISC_START_ADDRESS_2400;
break;
case PCI_DEVICE_ID_QLOGIC_ISP2532:
ha->device_type |= DT_ISP2532;
ha->device_type |= DT_ZIO_SUPPORTED;
ha->device_type |= DT_FWI2;
ha->device_type |= DT_IIDMA;
ha->fw_srisc_address = RISC_START_ADDRESS_2400;
break;
case PCI_DEVICE_ID_QLOGIC_ISP8001:
ha->device_type |= DT_ISP8001;
ha->device_type |= DT_ZIO_SUPPORTED;
ha->device_type |= DT_FWI2;
ha->device_type |= DT_IIDMA;
ha->fw_srisc_address = RISC_START_ADDRESS_2400;
break;
case PCI_DEVICE_ID_QLOGIC_ISP8021:
ha->device_type |= DT_ISP8021;
ha->device_type |= DT_ZIO_SUPPORTED;
ha->device_type |= DT_FWI2;
ha->fw_srisc_address = RISC_START_ADDRESS_2400;
/* Initialize 82XX ISP flags */
qla82xx_init_flags(ha);
break;
}
if (IS_QLA82XX(ha))
ha->port_no = !(ha->portnum & 1);
else
/* Get adapter physical port no from interrupt pin register. */
pci_read_config_byte(ha->pdev, PCI_INTERRUPT_PIN, &ha->port_no);
if (ha->port_no & 1)
ha->flags.port0 = 1;
else
ha->flags.port0 = 0;
}
static int
qla2x00_iospace_config(struct qla_hw_data *ha)
{
resource_size_t pio;
uint16_t msix;
int cpus;
if (IS_QLA82XX(ha))
return qla82xx_iospace_config(ha);
if (pci_request_selected_regions(ha->pdev, ha->bars,
QLA2XXX_DRIVER_NAME)) {
qla_printk(KERN_WARNING, ha,
"Failed to reserve PIO/MMIO regions (%s)\n",
pci_name(ha->pdev));
goto iospace_error_exit;
}
if (!(ha->bars & 1))
goto skip_pio;
/* We only need PIO for Flash operations on ISP2312 v2 chips. */
pio = pci_resource_start(ha->pdev, 0);
if (pci_resource_flags(ha->pdev, 0) & IORESOURCE_IO) {
if (pci_resource_len(ha->pdev, 0) < MIN_IOBASE_LEN) {
qla_printk(KERN_WARNING, ha,
"Invalid PCI I/O region size (%s)...\n",
pci_name(ha->pdev));
pio = 0;
}
} else {
qla_printk(KERN_WARNING, ha,
"region #0 not a PIO resource (%s)...\n",
pci_name(ha->pdev));
pio = 0;
}
ha->pio_address = pio;
skip_pio:
/* Use MMIO operations for all accesses. */
if (!(pci_resource_flags(ha->pdev, 1) & IORESOURCE_MEM)) {
qla_printk(KERN_ERR, ha,
"region #1 not an MMIO resource (%s), aborting\n",
pci_name(ha->pdev));
goto iospace_error_exit;
}
if (pci_resource_len(ha->pdev, 1) < MIN_IOBASE_LEN) {
qla_printk(KERN_ERR, ha,
"Invalid PCI mem region size (%s), aborting\n",
pci_name(ha->pdev));
goto iospace_error_exit;
}
ha->iobase = ioremap(pci_resource_start(ha->pdev, 1), MIN_IOBASE_LEN);
if (!ha->iobase) {
qla_printk(KERN_ERR, ha,
"cannot remap MMIO (%s), aborting\n", pci_name(ha->pdev));
goto iospace_error_exit;
}
/* Determine queue resources */
ha->max_req_queues = ha->max_rsp_queues = 1;
if ((ql2xmaxqueues <= 1 && !ql2xmultique_tag) ||
(ql2xmaxqueues > 1 && ql2xmultique_tag) ||
(!IS_QLA25XX(ha) && !IS_QLA81XX(ha)))
goto mqiobase_exit;
ha->mqiobase = ioremap(pci_resource_start(ha->pdev, 3),
pci_resource_len(ha->pdev, 3));
if (ha->mqiobase) {
/* Read MSIX vector size of the board */
pci_read_config_word(ha->pdev, QLA_PCI_MSIX_CONTROL, &msix);
ha->msix_count = msix;
/* Max queues are bounded by available msix vectors */
/* queue 0 uses two msix vectors */
if (ql2xmultique_tag) {
cpus = num_online_cpus();
ha->max_rsp_queues = (ha->msix_count - 1 > cpus) ?
(cpus + 1) : (ha->msix_count - 1);
ha->max_req_queues = 2;
} else if (ql2xmaxqueues > 1) {
ha->max_req_queues = ql2xmaxqueues > QLA_MQ_SIZE ?
QLA_MQ_SIZE : ql2xmaxqueues;
DEBUG2(qla_printk(KERN_INFO, ha, "QoS mode set, max no"
" of request queues:%d\n", ha->max_req_queues));
}
qla_printk(KERN_INFO, ha,
"MSI-X vector count: %d\n", msix);
} else
qla_printk(KERN_INFO, ha, "BAR 3 not enabled\n");
mqiobase_exit:
ha->msix_count = ha->max_rsp_queues + 1;
return (0);
iospace_error_exit:
return (-ENOMEM);
}
static void
qla2xxx_scan_start(struct Scsi_Host *shost)
{
scsi_qla_host_t *vha = shost_priv(shost);
if (vha->hw->flags.running_gold_fw)
return;
set_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags);
set_bit(LOCAL_LOOP_UPDATE, &vha->dpc_flags);
set_bit(RSCN_UPDATE, &vha->dpc_flags);
set_bit(NPIV_CONFIG_NEEDED, &vha->dpc_flags);
}
static int
qla2xxx_scan_finished(struct Scsi_Host *shost, unsigned long time)
{
scsi_qla_host_t *vha = shost_priv(shost);
if (!vha->host)
return 1;
if (time > vha->hw->loop_reset_delay * HZ)
return 1;
return atomic_read(&vha->loop_state) == LOOP_READY;
}
/*
* PCI driver interface
*/
static int __devinit
qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
{
int ret = -ENODEV;
struct Scsi_Host *host;
scsi_qla_host_t *base_vha = NULL;
struct qla_hw_data *ha;
char pci_info[30];
char fw_str[30];
struct scsi_host_template *sht;
int bars, max_id, mem_only = 0;
uint16_t req_length = 0, rsp_length = 0;
struct req_que *req = NULL;
struct rsp_que *rsp = NULL;
bars = pci_select_bars(pdev, IORESOURCE_MEM | IORESOURCE_IO);
sht = &qla2xxx_driver_template;
if (pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2422 ||
pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2432 ||
pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8432 ||
pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5422 ||
pdev->device == PCI_DEVICE_ID_QLOGIC_ISP5432 ||
pdev->device == PCI_DEVICE_ID_QLOGIC_ISP2532 ||
pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8001 ||
pdev->device == PCI_DEVICE_ID_QLOGIC_ISP8021) {
bars = pci_select_bars(pdev, IORESOURCE_MEM);
mem_only = 1;
}
if (mem_only) {
if (pci_enable_device_mem(pdev))
goto probe_out;
} else {
if (pci_enable_device(pdev))
goto probe_out;
}
/* This may fail but that's ok */
pci_enable_pcie_error_reporting(pdev);
ha = kzalloc(sizeof(struct qla_hw_data), GFP_KERNEL);
if (!ha) {
DEBUG(printk("Unable to allocate memory for ha\n"));
goto probe_out;
}
ha->pdev = pdev;
/* Clear our data area */
ha->bars = bars;
ha->mem_only = mem_only;
spin_lock_init(&ha->hardware_lock);
spin_lock_init(&ha->vport_slock);
/* Set ISP-type information. */
qla2x00_set_isp_flags(ha);
/* Set EEH reset type to fundamental if required by hba */
if ( IS_QLA24XX(ha) || IS_QLA25XX(ha) || IS_QLA81XX(ha)) {
pdev->needs_freset = 1;
}
/* Configure PCI I/O space */
ret = qla2x00_iospace_config(ha);
if (ret)
goto probe_hw_failed;
qla_printk(KERN_INFO, ha,
"Found an ISP%04X, irq %d, iobase 0x%p\n", pdev->device, pdev->irq,
ha->iobase);
ha->prev_topology = 0;
ha->init_cb_size = sizeof(init_cb_t);
ha->link_data_rate = PORT_SPEED_UNKNOWN;
ha->optrom_size = OPTROM_SIZE_2300;
/* Assign ISP specific operations. */
max_id = MAX_TARGETS_2200;
if (IS_QLA2100(ha)) {
max_id = MAX_TARGETS_2100;
ha->mbx_count = MAILBOX_REGISTER_COUNT_2100;
req_length = REQUEST_ENTRY_CNT_2100;
rsp_length = RESPONSE_ENTRY_CNT_2100;
ha->max_loop_id = SNS_LAST_LOOP_ID_2100;
ha->gid_list_info_size = 4;
ha->flash_conf_off = ~0;
ha->flash_data_off = ~0;
ha->nvram_conf_off = ~0;
ha->nvram_data_off = ~0;
ha->isp_ops = &qla2100_isp_ops;
} else if (IS_QLA2200(ha)) {
ha->mbx_count = MAILBOX_REGISTER_COUNT;
req_length = REQUEST_ENTRY_CNT_2200;
rsp_length = RESPONSE_ENTRY_CNT_2100;
ha->max_loop_id = SNS_LAST_LOOP_ID_2100;
ha->gid_list_info_size = 4;
ha->flash_conf_off = ~0;
ha->flash_data_off = ~0;
ha->nvram_conf_off = ~0;
ha->nvram_data_off = ~0;
ha->isp_ops = &qla2100_isp_ops;
} else if (IS_QLA23XX(ha)) {
ha->mbx_count = MAILBOX_REGISTER_COUNT;
req_length = REQUEST_ENTRY_CNT_2200;
rsp_length = RESPONSE_ENTRY_CNT_2300;
ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
ha->gid_list_info_size = 6;
if (IS_QLA2322(ha) || IS_QLA6322(ha))
ha->optrom_size = OPTROM_SIZE_2322;
ha->flash_conf_off = ~0;
ha->flash_data_off = ~0;
ha->nvram_conf_off = ~0;
ha->nvram_data_off = ~0;
ha->isp_ops = &qla2300_isp_ops;
} else if (IS_QLA24XX_TYPE(ha)) {
ha->mbx_count = MAILBOX_REGISTER_COUNT;
req_length = REQUEST_ENTRY_CNT_24XX;
rsp_length = RESPONSE_ENTRY_CNT_2300;
ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
ha->gid_list_info_size = 8;
ha->optrom_size = OPTROM_SIZE_24XX;
ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA24XX;
ha->isp_ops = &qla24xx_isp_ops;
ha->flash_conf_off = FARX_ACCESS_FLASH_CONF;
ha->flash_data_off = FARX_ACCESS_FLASH_DATA;
ha->nvram_conf_off = FARX_ACCESS_NVRAM_CONF;
ha->nvram_data_off = FARX_ACCESS_NVRAM_DATA;
} else if (IS_QLA25XX(ha)) {
ha->mbx_count = MAILBOX_REGISTER_COUNT;
req_length = REQUEST_ENTRY_CNT_24XX;
rsp_length = RESPONSE_ENTRY_CNT_2300;
ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
ha->init_cb_size = sizeof(struct mid_init_cb_24xx);
ha->gid_list_info_size = 8;
ha->optrom_size = OPTROM_SIZE_25XX;
ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA25XX;
ha->isp_ops = &qla25xx_isp_ops;
ha->flash_conf_off = FARX_ACCESS_FLASH_CONF;
ha->flash_data_off = FARX_ACCESS_FLASH_DATA;
ha->nvram_conf_off = FARX_ACCESS_NVRAM_CONF;
ha->nvram_data_off = FARX_ACCESS_NVRAM_DATA;
} else if (IS_QLA81XX(ha)) {
ha->mbx_count = MAILBOX_REGISTER_COUNT;
req_length = REQUEST_ENTRY_CNT_24XX;
rsp_length = RESPONSE_ENTRY_CNT_2300;
ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
ha->init_cb_size = sizeof(struct mid_init_cb_81xx);
ha->gid_list_info_size = 8;
ha->optrom_size = OPTROM_SIZE_81XX;
ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA25XX;
ha->isp_ops = &qla81xx_isp_ops;
ha->flash_conf_off = FARX_ACCESS_FLASH_CONF_81XX;
ha->flash_data_off = FARX_ACCESS_FLASH_DATA_81XX;
ha->nvram_conf_off = ~0;
ha->nvram_data_off = ~0;
} else if (IS_QLA82XX(ha)) {
ha->mbx_count = MAILBOX_REGISTER_COUNT;
req_length = REQUEST_ENTRY_CNT_82XX;
rsp_length = RESPONSE_ENTRY_CNT_82XX;
ha->max_loop_id = SNS_LAST_LOOP_ID_2300;
ha->init_cb_size = sizeof(struct mid_init_cb_81xx);
ha->gid_list_info_size = 8;
ha->optrom_size = OPTROM_SIZE_82XX;
ha->nvram_npiv_size = QLA_MAX_VPORTS_QLA25XX;
ha->isp_ops = &qla82xx_isp_ops;
ha->flash_conf_off = FARX_ACCESS_FLASH_CONF;
ha->flash_data_off = FARX_ACCESS_FLASH_DATA;
ha->nvram_conf_off = FARX_ACCESS_NVRAM_CONF;
ha->nvram_data_off = FARX_ACCESS_NVRAM_DATA;
}
mutex_init(&ha->vport_lock);
init_completion(&ha->mbx_cmd_comp);
complete(&ha->mbx_cmd_comp);
init_completion(&ha->mbx_intr_comp);
init_completion(&ha->dcbx_comp);
set_bit(0, (unsigned long *) ha->vp_idx_map);
qla2x00_config_dma_addressing(ha);
ret = qla2x00_mem_alloc(ha, req_length, rsp_length, &req, &rsp);
if (!ret) {
qla_printk(KERN_WARNING, ha,
"[ERROR] Failed to allocate memory for adapter\n");
goto probe_hw_failed;
}
req->max_q_depth = MAX_Q_DEPTH;
if (ql2xmaxqdepth != 0 && ql2xmaxqdepth <= 0xffffU)
req->max_q_depth = ql2xmaxqdepth;
base_vha = qla2x00_create_host(sht, ha);
if (!base_vha) {
qla_printk(KERN_WARNING, ha,
"[ERROR] Failed to allocate memory for scsi_host\n");
ret = -ENOMEM;
qla2x00_mem_free(ha);
qla2x00_free_req_que(ha, req);
qla2x00_free_rsp_que(ha, rsp);
goto probe_hw_failed;
}
pci_set_drvdata(pdev, base_vha);
host = base_vha->host;
base_vha->req = req;
host->can_queue = req->length + 128;
if (IS_QLA2XXX_MIDTYPE(ha))
base_vha->mgmt_svr_loop_id = 10 + base_vha->vp_idx;
else
base_vha->mgmt_svr_loop_id = MANAGEMENT_SERVER +
base_vha->vp_idx;
/* Set the SG table size based on ISP type */
if (!IS_FWI2_CAPABLE(ha)) {
if (IS_QLA2100(ha))
host->sg_tablesize = 32;
} else {
if (!IS_QLA82XX(ha))
host->sg_tablesize = QLA_SG_ALL;
}
host->max_id = max_id;
host->this_id = 255;
host->cmd_per_lun = 3;
host->unique_id = host->host_no;
if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) && ql2xenabledif)
host->max_cmd_len = 32;
else
host->max_cmd_len = MAX_CMDSZ;
host->max_channel = MAX_BUSES - 1;
host->max_lun = MAX_LUNS;
host->transportt = qla2xxx_transport_template;
sht->vendor_id = (SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC);
/* Set up the irqs */
ret = qla2x00_request_irqs(ha, rsp);
if (ret)
goto probe_init_failed;
pci_save_state(pdev);
/* Alloc arrays of request and response ring ptrs */
que_init:
if (!qla2x00_alloc_queues(ha)) {
qla_printk(KERN_WARNING, ha,
"[ERROR] Failed to allocate memory for queue"
" pointers\n");
goto probe_init_failed;
}
ha->rsp_q_map[0] = rsp;
ha->req_q_map[0] = req;
rsp->req = req;
req->rsp = rsp;
set_bit(0, ha->req_qid_map);
set_bit(0, ha->rsp_qid_map);
/* FWI2-capable only. */
req->req_q_in = &ha->iobase->isp24.req_q_in;
req->req_q_out = &ha->iobase->isp24.req_q_out;
rsp->rsp_q_in = &ha->iobase->isp24.rsp_q_in;
rsp->rsp_q_out = &ha->iobase->isp24.rsp_q_out;
if (ha->mqenable) {
req->req_q_in = &ha->mqiobase->isp25mq.req_q_in;
req->req_q_out = &ha->mqiobase->isp25mq.req_q_out;
rsp->rsp_q_in = &ha->mqiobase->isp25mq.rsp_q_in;
rsp->rsp_q_out = &ha->mqiobase->isp25mq.rsp_q_out;
}
if (IS_QLA82XX(ha)) {
req->req_q_out = &ha->iobase->isp82.req_q_out[0];
rsp->rsp_q_in = &ha->iobase->isp82.rsp_q_in[0];
rsp->rsp_q_out = &ha->iobase->isp82.rsp_q_out[0];
}
if (qla2x00_initialize_adapter(base_vha)) {
qla_printk(KERN_WARNING, ha,
"Failed to initialize adapter\n");
DEBUG2(printk("scsi(%ld): Failed to initialize adapter - "
"Adapter flags %x.\n",
base_vha->host_no, base_vha->device_flags));
if (IS_QLA82XX(ha)) {
qla82xx_idc_lock(ha);
qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
QLA82XX_DEV_FAILED);
qla82xx_idc_unlock(ha);
qla_printk(KERN_INFO, ha, "HW State: FAILED\n");
}
ret = -ENODEV;
goto probe_failed;
}
if (ha->mqenable) {
if (qla25xx_setup_mode(base_vha)) {
qla_printk(KERN_WARNING, ha,
"Can't create queues, falling back to single"
" queue mode\n");
goto que_init;
}
}
if (ha->flags.running_gold_fw)
goto skip_dpc;
/*
* Startup the kernel thread for this host adapter
*/
ha->dpc_thread = kthread_create(qla2x00_do_dpc, ha,
"%s_dpc", base_vha->host_str);
if (IS_ERR(ha->dpc_thread)) {
qla_printk(KERN_WARNING, ha,
"Unable to start DPC thread!\n");
ret = PTR_ERR(ha->dpc_thread);
goto probe_failed;
}
skip_dpc:
list_add_tail(&base_vha->list, &ha->vp_list);
base_vha->host->irq = ha->pdev->irq;
/* Initialized the timer */
qla2x00_start_timer(base_vha, qla2x00_timer, WATCH_INTERVAL);
DEBUG2(printk("DEBUG: detect hba %ld at address = %p\n",
base_vha->host_no, ha));
if ((IS_QLA25XX(ha) || IS_QLA81XX(ha)) && ql2xenabledif) {
if (ha->fw_attributes & BIT_4) {
base_vha->flags.difdix_supported = 1;
DEBUG18(qla_printk(KERN_INFO, ha,
"Registering for DIF/DIX type 1 and 3"
" protection.\n"));
scsi_host_set_prot(host,
SHOST_DIF_TYPE1_PROTECTION
| SHOST_DIF_TYPE2_PROTECTION
| SHOST_DIF_TYPE3_PROTECTION
| SHOST_DIX_TYPE1_PROTECTION
| SHOST_DIX_TYPE2_PROTECTION
| SHOST_DIX_TYPE3_PROTECTION);
scsi_host_set_guard(host, SHOST_DIX_GUARD_CRC);
} else
base_vha->flags.difdix_supported = 0;
}
ha->isp_ops->enable_intrs(ha);
ret = scsi_add_host(host, &pdev->dev);
if (ret)
goto probe_failed;
[SCSI] qla2xxx: dpc thread can execute before scsi host has been added Fix crash in qla2x00_fdmi_register() due to the dpc thread executing before the scsi host has been fully added. Unable to handle kernel NULL pointer dereference (address 00000000000001d0) qla2xxx_7_dpc[4140]: Oops 8813272891392 [1] Call Trace: [<a000000100016910>] show_stack+0x50/0xa0 sp=e00000b07c59f930 bsp=e00000b07c591400 [<a000000100017180>] show_regs+0x820/0x860 sp=e00000b07c59fb00 bsp=e00000b07c5913a0 [<a00000010003bd60>] die+0x1a0/0x2e0 sp=e00000b07c59fb00 bsp=e00000b07c591360 [<a0000001000681a0>] ia64_do_page_fault+0x8c0/0x9e0 sp=e00000b07c59fb00 bsp=e00000b07c591310 [<a00000010000c8e0>] ia64_native_leave_kernel+0x0/0x270 sp=e00000b07c59fb90 bsp=e00000b07c591310 [<a000000207197350>] qla2x00_fdmi_register+0x850/0xbe0 [qla2xxx] sp=e00000b07c59fd60 bsp=e00000b07c591290 [<a000000207171570>] qla2x00_configure_loop+0x1930/0x34c0 [qla2xxx] sp=e00000b07c59fd60 bsp=e00000b07c591128 [<a0000002071732b0>] qla2x00_loop_resync+0x1b0/0x2e0 [qla2xxx] sp=e00000b07c59fdf0 bsp=e00000b07c5910c0 [<a000000207166d40>] qla2x00_do_dpc+0x9a0/0xce0 [qla2xxx] sp=e00000b07c59fdf0 bsp=e00000b07c590fa0 [<a0000001000d5bb0>] kthread+0x110/0x140 sp=e00000b07c59fe00 bsp=e00000b07c590f68 [<a000000100014a30>] kernel_thread_helper+0xd0/0x100 sp=e00000b07c59fe30 bsp=e00000b07c590f40 [<a00000010000a4c0>] start_kernel_thread+0x20/0x40 sp=e00000b07c59fe30 bsp=e00000b07c590f40 crash> dis a000000207197350 0xa000000207197350 <qla2x00_fdmi_register+2128>: [MMI] ld1 r45=[r14];; crash> scsi_qla_host.host 0xe00000b058c73ff8 host = 0xe00000b058c73be0, crash> Scsi_Host.shost_data 0xe00000b058c73be0 shost_data = 0x0, <<<<<<<<<<< The fc_transport fc_* workqueue threads have yet to be created. crash> ps | grep _7 3891 2 2 e00000b075c80000 IN 0.0 0 0 [scsi_eh_7] 4140 2 3 e00000b07c590000 RU 0.0 0 0 [qla2xxx_7_dpc] The thread creating adding the Scsi_Host is blocked due to other activity in sysfs. crash> bt 3762 PID: 3762 TASK: e00000b071e70000 CPU: 3 COMMAND: "modprobe" #0 [BSP:e00000b071e71548] schedule at a000000100727e00 #1 [BSP:e00000b071e714c8] __mutex_lock_slowpath at a0000001007295a0 #2 [BSP:e00000b071e714a8] mutex_lock at a000000100729830 #3 [BSP:e00000b071e71478] sysfs_addrm_start at a0000001002584f0 #4 [BSP:e00000b071e71440] create_dir at a000000100259350 #5 [BSP:e00000b071e71410] sysfs_create_subdir at a000000100259510 #6 [BSP:e00000b071e713b0] internal_create_group at a00000010025c880 #7 [BSP:e00000b071e71388] sysfs_create_group at a00000010025cc50 #8 [BSP:e00000b071e71368] dpm_sysfs_add at a000000100425050 #9 [BSP:e00000b071e71310] device_add at a000000100417d90 #10 [BSP:e00000b071e712d8] scsi_add_host at a00000010045a380 #11 [BSP:e00000b071e71268] qla2x00_probe_one at a0000002071be950 #12 [BSP:e00000b071e71248] local_pci_probe at a00000010032e490 #13 [BSP:e00000b071e71218] pci_device_probe at a00000010032ecd0 #14 [BSP:e00000b071e711d8] driver_probe_device at a00000010041d480 #15 [BSP:e00000b071e711a8] __driver_attach at a00000010041d6e0 #16 [BSP:e00000b071e71170] bus_for_each_dev at a00000010041c240 #17 [BSP:e00000b071e71150] driver_attach at a00000010041d0a0 #18 [BSP:e00000b071e71108] bus_add_driver at a00000010041b080 #19 [BSP:e00000b071e710c0] driver_register at a00000010041dea0 #20 [BSP:e00000b071e71088] __pci_register_driver at a00000010032f610 #21 [BSP:e00000b071e71058] (unknown) at a000000207200270 #22 [BSP:e00000b071e71018] do_one_initcall at a00000010000a9c0 #23 [BSP:e00000b071e70f98] sys_init_module at a0000001000fef00 #24 [BSP:e00000b071e70f98] ia64_ret_from_syscall at a00000010000c740 So, it appears that qla2xxx dpc thread is moving forward before the scsi host has been completely added. This patch moves the setting of the init_done (and online) flag to after the call to scsi_add_host() to hold off the dpc thread. Found via large lun count testing using 2.6.31. Signed-off-by: Michael Reed <mdr@sgi.com> Acked-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Cc: stable@kernel.org Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2009-12-02 15:11:16 +00:00
base_vha->flags.init_done = 1;
base_vha->flags.online = 1;
scsi_scan_host(host);
qla2x00_alloc_sysfs_attr(base_vha);
qla2x00_init_host_attr(base_vha);
qla2x00_dfs_setup(base_vha);
qla_printk(KERN_INFO, ha, "\n"
" QLogic Fibre Channel HBA Driver: %s\n"
" QLogic %s - %s\n"
" ISP%04X: %s @ %s hdma%c, host#=%ld, fw=%s\n",
qla2x00_version_str, ha->model_number,
ha->model_desc ? ha->model_desc : "", pdev->device,
ha->isp_ops->pci_info_str(base_vha, pci_info), pci_name(pdev),
ha->flags.enable_64bit_addressing ? '+' : '-', base_vha->host_no,
ha->isp_ops->fw_version_str(base_vha, fw_str));
return 0;
probe_init_failed:
qla2x00_free_req_que(ha, req);
qla2x00_free_rsp_que(ha, rsp);
ha->max_req_queues = ha->max_rsp_queues = 0;
probe_failed:
if (base_vha->timer_active)
qla2x00_stop_timer(base_vha);
base_vha->flags.online = 0;
if (ha->dpc_thread) {
struct task_struct *t = ha->dpc_thread;
ha->dpc_thread = NULL;
kthread_stop(t);
}
qla2x00_free_device(base_vha);
scsi_host_put(base_vha->host);
probe_hw_failed:
if (IS_QLA82XX(ha)) {
qla82xx_idc_lock(ha);
qla82xx_clear_drv_active(ha);
qla82xx_idc_unlock(ha);
iounmap((device_reg_t __iomem *)ha->nx_pcibase);
if (!ql2xdbwr)
iounmap((device_reg_t __iomem *)ha->nxdb_wr_ptr);
} else {
if (ha->iobase)
iounmap(ha->iobase);
}
pci_release_selected_regions(ha->pdev, ha->bars);
kfree(ha);
ha = NULL;
probe_out:
pci_disable_device(pdev);
return ret;
}
static void
qla2x00_shutdown(struct pci_dev *pdev)
{
scsi_qla_host_t *vha;
struct qla_hw_data *ha;
vha = pci_get_drvdata(pdev);
ha = vha->hw;
/* Turn-off FCE trace */
if (ha->flags.fce_enabled) {
qla2x00_disable_fce_trace(vha, NULL, NULL);
ha->flags.fce_enabled = 0;
}
/* Turn-off EFT trace */
if (ha->eft)
qla2x00_disable_eft_trace(vha);
/* Stop currently executing firmware. */
qla2x00_try_to_stop_firmware(vha);
/* Turn adapter off line */
vha->flags.online = 0;
/* turn-off interrupts on the card */
if (ha->interrupts_on) {
vha->flags.init_done = 0;
ha->isp_ops->disable_intrs(ha);
}
qla2x00_free_irqs(vha);
qla2x00_free_fw_dump(ha);
}
static void
qla2x00_remove_one(struct pci_dev *pdev)
{
scsi_qla_host_t *base_vha, *vha;
struct qla_hw_data *ha;
unsigned long flags;
base_vha = pci_get_drvdata(pdev);
ha = base_vha->hw;
spin_lock_irqsave(&ha->vport_slock, flags);
list_for_each_entry(vha, &ha->vp_list, list) {
atomic_inc(&vha->vref_count);
if (vha->fc_vport) {
spin_unlock_irqrestore(&ha->vport_slock, flags);
fc_vport_terminate(vha->fc_vport);
spin_lock_irqsave(&ha->vport_slock, flags);
}
atomic_dec(&vha->vref_count);
}
spin_unlock_irqrestore(&ha->vport_slock, flags);
set_bit(UNLOADING, &base_vha->dpc_flags);
qla2x00_abort_all_cmds(base_vha, DID_NO_CONNECT << 16);
qla2x00_dfs_remove(base_vha);
qla84xx_put_chip(base_vha);
/* Disable timer */
if (base_vha->timer_active)
qla2x00_stop_timer(base_vha);
base_vha->flags.online = 0;
/* Flush the work queue and remove it */
if (ha->wq) {
flush_workqueue(ha->wq);
destroy_workqueue(ha->wq);
ha->wq = NULL;
}
/* Kill the kernel thread for this host */
if (ha->dpc_thread) {
struct task_struct *t = ha->dpc_thread;
/*
* qla2xxx_wake_dpc checks for ->dpc_thread
* so we need to zero it out.
*/
ha->dpc_thread = NULL;
kthread_stop(t);
}
qla2x00_free_sysfs_attr(base_vha);
fc_remove_host(base_vha->host);
scsi_remove_host(base_vha->host);
qla2x00_free_device(base_vha);
scsi_host_put(base_vha->host);
if (IS_QLA82XX(ha)) {
qla82xx_idc_lock(ha);
qla82xx_clear_drv_active(ha);
qla82xx_idc_unlock(ha);
iounmap((device_reg_t __iomem *)ha->nx_pcibase);
if (!ql2xdbwr)
iounmap((device_reg_t __iomem *)ha->nxdb_wr_ptr);
} else {
if (ha->iobase)
iounmap(ha->iobase);
if (ha->mqiobase)
iounmap(ha->mqiobase);
}
pci_release_selected_regions(ha->pdev, ha->bars);
kfree(ha);
ha = NULL;
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
pci_set_drvdata(pdev, NULL);
}
static void
qla2x00_free_device(scsi_qla_host_t *vha)
{
struct qla_hw_data *ha = vha->hw;
qla2x00_abort_all_cmds(vha, DID_NO_CONNECT << 16);
/* Disable timer */
if (vha->timer_active)
qla2x00_stop_timer(vha);
/* Kill the kernel thread for this host */
if (ha->dpc_thread) {
struct task_struct *t = ha->dpc_thread;
/*
* qla2xxx_wake_dpc checks for ->dpc_thread
* so we need to zero it out.
*/
ha->dpc_thread = NULL;
kthread_stop(t);
}
qla25xx_delete_queues(vha);
if (ha->flags.fce_enabled)
qla2x00_disable_fce_trace(vha, NULL, NULL);
if (ha->eft)
qla2x00_disable_eft_trace(vha);
/* Stop currently executing firmware. */
qla2x00_try_to_stop_firmware(vha);
vha->flags.online = 0;
/* turn-off interrupts on the card */
if (ha->interrupts_on) {
vha->flags.init_done = 0;
ha->isp_ops->disable_intrs(ha);
}
qla2x00_free_irqs(vha);
qla2x00_free_fcports(vha);
qla2x00_mem_free(ha);
qla2x00_free_queues(ha);
}
void qla2x00_free_fcports(struct scsi_qla_host *vha)
{
fc_port_t *fcport, *tfcport;
list_for_each_entry_safe(fcport, tfcport, &vha->vp_fcports, list) {
list_del(&fcport->list);
kfree(fcport);
fcport = NULL;
}
}
static inline void
qla2x00_schedule_rport_del(struct scsi_qla_host *vha, fc_port_t *fcport,
int defer)
{
struct fc_rport *rport;
scsi_qla_host_t *base_vha;
unsigned long flags;
if (!fcport->rport)
return;
rport = fcport->rport;
if (defer) {
base_vha = pci_get_drvdata(vha->hw->pdev);
spin_lock_irqsave(vha->host->host_lock, flags);
fcport->drport = rport;
spin_unlock_irqrestore(vha->host->host_lock, flags);
set_bit(FCPORT_UPDATE_NEEDED, &base_vha->dpc_flags);
qla2xxx_wake_dpc(base_vha);
} else
fc_remote_port_delete(rport);
}
/*
* qla2x00_mark_device_lost Updates fcport state when device goes offline.
*
* Input: ha = adapter block pointer. fcport = port structure pointer.
*
* Return: None.
*
* Context:
*/
void qla2x00_mark_device_lost(scsi_qla_host_t *vha, fc_port_t *fcport,
int do_login, int defer)
{
if (atomic_read(&fcport->state) == FCS_ONLINE &&
vha->vp_idx == fcport->vp_idx) {
atomic_set(&fcport->state, FCS_DEVICE_LOST);
qla2x00_schedule_rport_del(vha, fcport, defer);
}
/*
* We may need to retry the login, so don't change the state of the
* port but do the retries.
*/
if (atomic_read(&fcport->state) != FCS_DEVICE_DEAD)
atomic_set(&fcport->state, FCS_DEVICE_LOST);
if (!do_login)
return;
if (fcport->login_retry == 0) {
fcport->login_retry = vha->hw->login_retry_count;
set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
DEBUG(printk("scsi(%ld): Port login retry: "
"%02x%02x%02x%02x%02x%02x%02x%02x, "
"id = 0x%04x retry cnt=%d\n",
vha->host_no,
fcport->port_name[0],
fcport->port_name[1],
fcport->port_name[2],
fcport->port_name[3],
fcport->port_name[4],
fcport->port_name[5],
fcport->port_name[6],
fcport->port_name[7],
fcport->loop_id,
fcport->login_retry));
}
}
/*
* qla2x00_mark_all_devices_lost
* Updates fcport state when device goes offline.
*
* Input:
* ha = adapter block pointer.
* fcport = port structure pointer.
*
* Return:
* None.
*
* Context:
*/
void
qla2x00_mark_all_devices_lost(scsi_qla_host_t *vha, int defer)
{
fc_port_t *fcport;
list_for_each_entry(fcport, &vha->vp_fcports, list) {
if (vha->vp_idx != 0 && vha->vp_idx != fcport->vp_idx)
continue;
/*
* No point in marking the device as lost, if the device is
* already DEAD.
*/
if (atomic_read(&fcport->state) == FCS_DEVICE_DEAD)
continue;
if (atomic_read(&fcport->state) == FCS_ONLINE) {
atomic_set(&fcport->state, FCS_DEVICE_LOST);
if (defer)
qla2x00_schedule_rport_del(vha, fcport, defer);
else if (vha->vp_idx == fcport->vp_idx)
qla2x00_schedule_rport_del(vha, fcport, defer);
}
}
}
/*
* qla2x00_mem_alloc
* Allocates adapter memory.
*
* Returns:
* 0 = success.
* !0 = failure.
*/
static int
qla2x00_mem_alloc(struct qla_hw_data *ha, uint16_t req_len, uint16_t rsp_len,
struct req_que **req, struct rsp_que **rsp)
{
char name[16];
ha->init_cb = dma_alloc_coherent(&ha->pdev->dev, ha->init_cb_size,
&ha->init_cb_dma, GFP_KERNEL);
if (!ha->init_cb)
goto fail;
ha->gid_list = dma_alloc_coherent(&ha->pdev->dev, GID_LIST_SIZE,
&ha->gid_list_dma, GFP_KERNEL);
if (!ha->gid_list)
goto fail_free_init_cb;
ha->srb_mempool = mempool_create_slab_pool(SRB_MIN_REQ, srb_cachep);
if (!ha->srb_mempool)
goto fail_free_gid_list;
if (IS_QLA82XX(ha)) {
/* Allocate cache for CT6 Ctx. */
if (!ctx_cachep) {
ctx_cachep = kmem_cache_create("qla2xxx_ctx",
sizeof(struct ct6_dsd), 0,
SLAB_HWCACHE_ALIGN, NULL);
if (!ctx_cachep)
goto fail_free_gid_list;
}
ha->ctx_mempool = mempool_create_slab_pool(SRB_MIN_REQ,
ctx_cachep);
if (!ha->ctx_mempool)
goto fail_free_srb_mempool;
}
/* Get memory for cached NVRAM */
ha->nvram = kzalloc(MAX_NVRAM_SIZE, GFP_KERNEL);
if (!ha->nvram)
goto fail_free_ctx_mempool;
snprintf(name, sizeof(name), "%s_%d", QLA2XXX_DRIVER_NAME,
ha->pdev->device);
ha->s_dma_pool = dma_pool_create(name, &ha->pdev->dev,
DMA_POOL_SIZE, 8, 0);
if (!ha->s_dma_pool)
goto fail_free_nvram;
if (IS_QLA82XX(ha) || ql2xenabledif) {
ha->dl_dma_pool = dma_pool_create(name, &ha->pdev->dev,
DSD_LIST_DMA_POOL_SIZE, 8, 0);
if (!ha->dl_dma_pool) {
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - dl_dma_pool\n");
goto fail_s_dma_pool;
}
ha->fcp_cmnd_dma_pool = dma_pool_create(name, &ha->pdev->dev,
FCP_CMND_DMA_POOL_SIZE, 8, 0);
if (!ha->fcp_cmnd_dma_pool) {
qla_printk(KERN_WARNING, ha,
"Memory Allocation failed - fcp_cmnd_dma_pool\n");
goto fail_dl_dma_pool;
}
}
/* Allocate memory for SNS commands */
if (IS_QLA2100(ha) || IS_QLA2200(ha)) {
/* Get consistent memory allocated for SNS commands */
ha->sns_cmd = dma_alloc_coherent(&ha->pdev->dev,
sizeof(struct sns_cmd_pkt), &ha->sns_cmd_dma, GFP_KERNEL);
if (!ha->sns_cmd)
goto fail_dma_pool;
} else {
/* Get consistent memory allocated for MS IOCB */
ha->ms_iocb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
&ha->ms_iocb_dma);
if (!ha->ms_iocb)
goto fail_dma_pool;
/* Get consistent memory allocated for CT SNS commands */
ha->ct_sns = dma_alloc_coherent(&ha->pdev->dev,
sizeof(struct ct_sns_pkt), &ha->ct_sns_dma, GFP_KERNEL);
if (!ha->ct_sns)
goto fail_free_ms_iocb;
}
/* Allocate memory for request ring */
*req = kzalloc(sizeof(struct req_que), GFP_KERNEL);
if (!*req) {
DEBUG(printk("Unable to allocate memory for req\n"));
goto fail_req;
}
(*req)->length = req_len;
(*req)->ring = dma_alloc_coherent(&ha->pdev->dev,
((*req)->length + 1) * sizeof(request_t),
&(*req)->dma, GFP_KERNEL);
if (!(*req)->ring) {
DEBUG(printk("Unable to allocate memory for req_ring\n"));
goto fail_req_ring;
}
/* Allocate memory for response ring */
*rsp = kzalloc(sizeof(struct rsp_que), GFP_KERNEL);
if (!*rsp) {
qla_printk(KERN_WARNING, ha,
"Unable to allocate memory for rsp\n");
goto fail_rsp;
}
(*rsp)->hw = ha;
(*rsp)->length = rsp_len;
(*rsp)->ring = dma_alloc_coherent(&ha->pdev->dev,
((*rsp)->length + 1) * sizeof(response_t),
&(*rsp)->dma, GFP_KERNEL);
if (!(*rsp)->ring) {
qla_printk(KERN_WARNING, ha,
"Unable to allocate memory for rsp_ring\n");
goto fail_rsp_ring;
}
(*req)->rsp = *rsp;
(*rsp)->req = *req;
/* Allocate memory for NVRAM data for vports */
if (ha->nvram_npiv_size) {
ha->npiv_info = kzalloc(sizeof(struct qla_npiv_entry) *
ha->nvram_npiv_size, GFP_KERNEL);
if (!ha->npiv_info) {
qla_printk(KERN_WARNING, ha,
"Unable to allocate memory for npiv info\n");
goto fail_npiv_info;
}
} else
ha->npiv_info = NULL;
/* Get consistent memory allocated for EX-INIT-CB. */
if (IS_QLA8XXX_TYPE(ha)) {
ha->ex_init_cb = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
&ha->ex_init_cb_dma);
if (!ha->ex_init_cb)
goto fail_ex_init_cb;
}
INIT_LIST_HEAD(&ha->gbl_dsd_list);
/* Get consistent memory allocated for Async Port-Database. */
if (!IS_FWI2_CAPABLE(ha)) {
ha->async_pd = dma_pool_alloc(ha->s_dma_pool, GFP_KERNEL,
&ha->async_pd_dma);
if (!ha->async_pd)
goto fail_async_pd;
}
INIT_LIST_HEAD(&ha->vp_list);
return 1;
fail_async_pd:
dma_pool_free(ha->s_dma_pool, ha->ex_init_cb, ha->ex_init_cb_dma);
fail_ex_init_cb:
kfree(ha->npiv_info);
fail_npiv_info:
dma_free_coherent(&ha->pdev->dev, ((*rsp)->length + 1) *
sizeof(response_t), (*rsp)->ring, (*rsp)->dma);
(*rsp)->ring = NULL;
(*rsp)->dma = 0;
fail_rsp_ring:
kfree(*rsp);
fail_rsp:
dma_free_coherent(&ha->pdev->dev, ((*req)->length + 1) *
sizeof(request_t), (*req)->ring, (*req)->dma);
(*req)->ring = NULL;
(*req)->dma = 0;
fail_req_ring:
kfree(*req);
fail_req:
dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
ha->ct_sns, ha->ct_sns_dma);
ha->ct_sns = NULL;
ha->ct_sns_dma = 0;
fail_free_ms_iocb:
dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
ha->ms_iocb = NULL;
ha->ms_iocb_dma = 0;
fail_dma_pool:
if (IS_QLA82XX(ha) || ql2xenabledif) {
dma_pool_destroy(ha->fcp_cmnd_dma_pool);
ha->fcp_cmnd_dma_pool = NULL;
}
fail_dl_dma_pool:
if (IS_QLA82XX(ha) || ql2xenabledif) {
dma_pool_destroy(ha->dl_dma_pool);
ha->dl_dma_pool = NULL;
}
fail_s_dma_pool:
dma_pool_destroy(ha->s_dma_pool);
ha->s_dma_pool = NULL;
fail_free_nvram:
kfree(ha->nvram);
ha->nvram = NULL;
fail_free_ctx_mempool:
mempool_destroy(ha->ctx_mempool);
ha->ctx_mempool = NULL;
fail_free_srb_mempool:
mempool_destroy(ha->srb_mempool);
ha->srb_mempool = NULL;
fail_free_gid_list:
dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
ha->gid_list_dma);
ha->gid_list = NULL;
ha->gid_list_dma = 0;
fail_free_init_cb:
dma_free_coherent(&ha->pdev->dev, ha->init_cb_size, ha->init_cb,
ha->init_cb_dma);
ha->init_cb = NULL;
ha->init_cb_dma = 0;
fail:
DEBUG(printk("%s: Memory allocation failure\n", __func__));
return -ENOMEM;
}
/*
* qla2x00_free_fw_dump
* Frees fw dump stuff.
*
* Input:
* ha = adapter block pointer.
*/
static void
qla2x00_free_fw_dump(struct qla_hw_data *ha)
{
if (ha->fce)
dma_free_coherent(&ha->pdev->dev, FCE_SIZE, ha->fce,
ha->fce_dma);
if (ha->fw_dump) {
if (ha->eft)
dma_free_coherent(&ha->pdev->dev,
ntohl(ha->fw_dump->eft_size), ha->eft, ha->eft_dma);
vfree(ha->fw_dump);
}
ha->fce = NULL;
ha->fce_dma = 0;
ha->eft = NULL;
ha->eft_dma = 0;
ha->fw_dump = NULL;
ha->fw_dumped = 0;
ha->fw_dump_reading = 0;
}
/*
* qla2x00_mem_free
* Frees all adapter allocated memory.
*
* Input:
* ha = adapter block pointer.
*/
static void
qla2x00_mem_free(struct qla_hw_data *ha)
{
qla2x00_free_fw_dump(ha);
if (ha->srb_mempool)
mempool_destroy(ha->srb_mempool);
if (ha->dcbx_tlv)
dma_free_coherent(&ha->pdev->dev, DCBX_TLV_DATA_SIZE,
ha->dcbx_tlv, ha->dcbx_tlv_dma);
if (ha->xgmac_data)
dma_free_coherent(&ha->pdev->dev, XGMAC_DATA_SIZE,
ha->xgmac_data, ha->xgmac_data_dma);
if (ha->sns_cmd)
dma_free_coherent(&ha->pdev->dev, sizeof(struct sns_cmd_pkt),
ha->sns_cmd, ha->sns_cmd_dma);
if (ha->ct_sns)
dma_free_coherent(&ha->pdev->dev, sizeof(struct ct_sns_pkt),
ha->ct_sns, ha->ct_sns_dma);
if (ha->sfp_data)
dma_pool_free(ha->s_dma_pool, ha->sfp_data, ha->sfp_data_dma);
if (ha->edc_data)
dma_pool_free(ha->s_dma_pool, ha->edc_data, ha->edc_data_dma);
if (ha->ms_iocb)
dma_pool_free(ha->s_dma_pool, ha->ms_iocb, ha->ms_iocb_dma);
if (ha->ex_init_cb)
dma_pool_free(ha->s_dma_pool,
ha->ex_init_cb, ha->ex_init_cb_dma);
if (ha->async_pd)
dma_pool_free(ha->s_dma_pool, ha->async_pd, ha->async_pd_dma);
if (ha->s_dma_pool)
dma_pool_destroy(ha->s_dma_pool);
if (ha->gid_list)
dma_free_coherent(&ha->pdev->dev, GID_LIST_SIZE, ha->gid_list,
ha->gid_list_dma);
if (IS_QLA82XX(ha)) {
if (!list_empty(&ha->gbl_dsd_list)) {
struct dsd_dma *dsd_ptr, *tdsd_ptr;
/* clean up allocated prev pool */
list_for_each_entry_safe(dsd_ptr,
tdsd_ptr, &ha->gbl_dsd_list, list) {
dma_pool_free(ha->dl_dma_pool,
dsd_ptr->dsd_addr, dsd_ptr->dsd_list_dma);
list_del(&dsd_ptr->list);
kfree(dsd_ptr);
}
}
}
if (ha->dl_dma_pool)
dma_pool_destroy(ha->dl_dma_pool);
if (ha->fcp_cmnd_dma_pool)
dma_pool_destroy(ha->fcp_cmnd_dma_pool);
if (ha->ctx_mempool)
mempool_destroy(ha->ctx_mempool);
if (ha->init_cb)
dma_free_coherent(&ha->pdev->dev, ha->init_cb_size,
ha->init_cb, ha->init_cb_dma);
vfree(ha->optrom_buffer);
kfree(ha->nvram);
kfree(ha->npiv_info);
ha->srb_mempool = NULL;
ha->ctx_mempool = NULL;
ha->sns_cmd = NULL;
ha->sns_cmd_dma = 0;
ha->ct_sns = NULL;
ha->ct_sns_dma = 0;
ha->ms_iocb = NULL;
ha->ms_iocb_dma = 0;
ha->init_cb = NULL;
ha->init_cb_dma = 0;
ha->ex_init_cb = NULL;
ha->ex_init_cb_dma = 0;
ha->async_pd = NULL;
ha->async_pd_dma = 0;
ha->s_dma_pool = NULL;
ha->dl_dma_pool = NULL;
ha->fcp_cmnd_dma_pool = NULL;
ha->gid_list = NULL;
ha->gid_list_dma = 0;
}
struct scsi_qla_host *qla2x00_create_host(struct scsi_host_template *sht,
struct qla_hw_data *ha)
{
struct Scsi_Host *host;
struct scsi_qla_host *vha = NULL;
host = scsi_host_alloc(sht, sizeof(scsi_qla_host_t));
if (host == NULL) {
printk(KERN_WARNING
"qla2xxx: Couldn't allocate host from scsi layer!\n");
goto fail;
}
/* Clear our data area */
vha = shost_priv(host);
memset(vha, 0, sizeof(scsi_qla_host_t));
vha->host = host;
vha->host_no = host->host_no;
vha->hw = ha;
INIT_LIST_HEAD(&vha->vp_fcports);
INIT_LIST_HEAD(&vha->work_list);
INIT_LIST_HEAD(&vha->list);
spin_lock_init(&vha->work_lock);
sprintf(vha->host_str, "%s_%ld", QLA2XXX_DRIVER_NAME, vha->host_no);
return vha;
fail:
return vha;
}
static struct qla_work_evt *
qla2x00_alloc_work(struct scsi_qla_host *vha, enum qla_work_type type)
{
struct qla_work_evt *e;
uint8_t bail;
QLA_VHA_MARK_BUSY(vha, bail);
if (bail)
return NULL;
e = kzalloc(sizeof(struct qla_work_evt), GFP_ATOMIC);
if (!e) {
QLA_VHA_MARK_NOT_BUSY(vha);
return NULL;
}
INIT_LIST_HEAD(&e->list);
e->type = type;
e->flags = QLA_EVT_FLAG_FREE;
return e;
}
static int
qla2x00_post_work(struct scsi_qla_host *vha, struct qla_work_evt *e)
{
unsigned long flags;
spin_lock_irqsave(&vha->work_lock, flags);
list_add_tail(&e->list, &vha->work_list);
spin_unlock_irqrestore(&vha->work_lock, flags);
qla2xxx_wake_dpc(vha);
return QLA_SUCCESS;
}
int
qla2x00_post_aen_work(struct scsi_qla_host *vha, enum fc_host_event_code code,
u32 data)
{
struct qla_work_evt *e;
e = qla2x00_alloc_work(vha, QLA_EVT_AEN);
if (!e)
return QLA_FUNCTION_FAILED;
e->u.aen.code = code;
e->u.aen.data = data;
return qla2x00_post_work(vha, e);
}
int
qla2x00_post_idc_ack_work(struct scsi_qla_host *vha, uint16_t *mb)
{
struct qla_work_evt *e;
e = qla2x00_alloc_work(vha, QLA_EVT_IDC_ACK);
if (!e)
return QLA_FUNCTION_FAILED;
memcpy(e->u.idc_ack.mb, mb, QLA_IDC_ACK_REGS * sizeof(uint16_t));
return qla2x00_post_work(vha, e);
}
#define qla2x00_post_async_work(name, type) \
int qla2x00_post_async_##name##_work( \
struct scsi_qla_host *vha, \
fc_port_t *fcport, uint16_t *data) \
{ \
struct qla_work_evt *e; \
\
e = qla2x00_alloc_work(vha, type); \
if (!e) \
return QLA_FUNCTION_FAILED; \
\
e->u.logio.fcport = fcport; \
if (data) { \
e->u.logio.data[0] = data[0]; \
e->u.logio.data[1] = data[1]; \
} \
return qla2x00_post_work(vha, e); \
}
qla2x00_post_async_work(login, QLA_EVT_ASYNC_LOGIN);
qla2x00_post_async_work(login_done, QLA_EVT_ASYNC_LOGIN_DONE);
qla2x00_post_async_work(logout, QLA_EVT_ASYNC_LOGOUT);
qla2x00_post_async_work(logout_done, QLA_EVT_ASYNC_LOGOUT_DONE);
qla2x00_post_async_work(adisc, QLA_EVT_ASYNC_ADISC);
qla2x00_post_async_work(adisc_done, QLA_EVT_ASYNC_ADISC_DONE);
int
qla2x00_post_uevent_work(struct scsi_qla_host *vha, u32 code)
{
struct qla_work_evt *e;
e = qla2x00_alloc_work(vha, QLA_EVT_UEVENT);
if (!e)
return QLA_FUNCTION_FAILED;
e->u.uevent.code = code;
return qla2x00_post_work(vha, e);
}
static void
qla2x00_uevent_emit(struct scsi_qla_host *vha, u32 code)
{
char event_string[40];
char *envp[] = { event_string, NULL };
switch (code) {
case QLA_UEVENT_CODE_FW_DUMP:
snprintf(event_string, sizeof(event_string), "FW_DUMP=%ld",
vha->host_no);
break;
default:
/* do nothing */
break;
}
kobject_uevent_env(&vha->hw->pdev->dev.kobj, KOBJ_CHANGE, envp);
}
void
qla2x00_do_work(struct scsi_qla_host *vha)
{
struct qla_work_evt *e, *tmp;
unsigned long flags;
LIST_HEAD(work);
spin_lock_irqsave(&vha->work_lock, flags);
list_splice_init(&vha->work_list, &work);
spin_unlock_irqrestore(&vha->work_lock, flags);
list_for_each_entry_safe(e, tmp, &work, list) {
list_del_init(&e->list);
switch (e->type) {
case QLA_EVT_AEN:
fc_host_post_event(vha->host, fc_get_event_number(),
e->u.aen.code, e->u.aen.data);
break;
case QLA_EVT_IDC_ACK:
qla81xx_idc_ack(vha, e->u.idc_ack.mb);
break;
case QLA_EVT_ASYNC_LOGIN:
qla2x00_async_login(vha, e->u.logio.fcport,
e->u.logio.data);
break;
case QLA_EVT_ASYNC_LOGIN_DONE:
qla2x00_async_login_done(vha, e->u.logio.fcport,
e->u.logio.data);
break;
case QLA_EVT_ASYNC_LOGOUT:
qla2x00_async_logout(vha, e->u.logio.fcport);
break;
case QLA_EVT_ASYNC_LOGOUT_DONE:
qla2x00_async_logout_done(vha, e->u.logio.fcport,
e->u.logio.data);
break;
case QLA_EVT_ASYNC_ADISC:
qla2x00_async_adisc(vha, e->u.logio.fcport,
e->u.logio.data);
break;
case QLA_EVT_ASYNC_ADISC_DONE:
qla2x00_async_adisc_done(vha, e->u.logio.fcport,
e->u.logio.data);
break;
case QLA_EVT_UEVENT:
qla2x00_uevent_emit(vha, e->u.uevent.code);
break;
}
if (e->flags & QLA_EVT_FLAG_FREE)
kfree(e);
/* For each work completed decrement vha ref count */
QLA_VHA_MARK_NOT_BUSY(vha);
}
}
/* Relogins all the fcports of a vport
* Context: dpc thread
*/
void qla2x00_relogin(struct scsi_qla_host *vha)
{
fc_port_t *fcport;
int status;
uint16_t next_loopid = 0;
struct qla_hw_data *ha = vha->hw;
uint16_t data[2];
list_for_each_entry(fcport, &vha->vp_fcports, list) {
/*
* If the port is not ONLINE then try to login
* to it if we haven't run out of retries.
*/
if (atomic_read(&fcport->state) != FCS_ONLINE &&
fcport->login_retry && !(fcport->flags & FCF_ASYNC_SENT)) {
fcport->login_retry--;
if (fcport->flags & FCF_FABRIC_DEVICE) {
if (fcport->flags & FCF_FCP2_DEVICE)
ha->isp_ops->fabric_logout(vha,
fcport->loop_id,
fcport->d_id.b.domain,
fcport->d_id.b.area,
fcport->d_id.b.al_pa);
if (IS_ALOGIO_CAPABLE(ha)) {
fcport->flags |= FCF_ASYNC_SENT;
data[0] = 0;
data[1] = QLA_LOGIO_LOGIN_RETRIED;
status = qla2x00_post_async_login_work(
vha, fcport, data);
if (status == QLA_SUCCESS)
continue;
/* Attempt a retry. */
status = 1;
} else
status = qla2x00_fabric_login(vha,
fcport, &next_loopid);
} else
status = qla2x00_local_device_login(vha,
fcport);
if (status == QLA_SUCCESS) {
fcport->old_loop_id = fcport->loop_id;
DEBUG(printk("scsi(%ld): port login OK: logged "
"in ID 0x%x\n", vha->host_no, fcport->loop_id));
qla2x00_update_fcport(vha, fcport);
} else if (status == 1) {
set_bit(RELOGIN_NEEDED, &vha->dpc_flags);
/* retry the login again */
DEBUG(printk("scsi(%ld): Retrying"
" %d login again loop_id 0x%x\n",
vha->host_no, fcport->login_retry,
fcport->loop_id));
} else {
fcport->login_retry = 0;
}
if (fcport->login_retry == 0 && status != QLA_SUCCESS)
fcport->loop_id = FC_NO_LOOP_ID;
}
if (test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags))
break;
}
}
/**************************************************************************
* qla2x00_do_dpc
* This kernel thread is a task that is schedule by the interrupt handler
* to perform the background processing for interrupts.
*
* Notes:
* This task always run in the context of a kernel thread. It
* is kick-off by the driver's detect code and starts up
* up one per adapter. It immediately goes to sleep and waits for
* some fibre event. When either the interrupt handler or
* the timer routine detects a event it will one of the task
* bits then wake us up.
**************************************************************************/
static int
qla2x00_do_dpc(void *data)
{
int rval;
scsi_qla_host_t *base_vha;
struct qla_hw_data *ha;
ha = (struct qla_hw_data *)data;
base_vha = pci_get_drvdata(ha->pdev);
set_user_nice(current, -20);
set_current_state(TASK_INTERRUPTIBLE);
while (!kthread_should_stop()) {
DEBUG3(printk("qla2x00: DPC handler sleeping\n"));
schedule();
__set_current_state(TASK_RUNNING);
DEBUG3(printk("qla2x00: DPC handler waking up\n"));
/* Initialization not yet finished. Don't do anything yet. */
if (!base_vha->flags.init_done)
continue;
if (ha->flags.eeh_busy) {
DEBUG17(qla_printk(KERN_WARNING, ha,
"qla2x00_do_dpc: dpc_flags: %lx\n",
base_vha->dpc_flags));
continue;
}
DEBUG3(printk("scsi(%ld): DPC handler\n", base_vha->host_no));
ha->dpc_active = 1;
if (ha->flags.mbox_busy) {
ha->dpc_active = 0;
continue;
}
qla2x00_do_work(base_vha);
if (IS_QLA82XX(ha)) {
if (test_and_clear_bit(ISP_UNRECOVERABLE,
&base_vha->dpc_flags)) {
qla82xx_idc_lock(ha);
qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
QLA82XX_DEV_FAILED);
qla82xx_idc_unlock(ha);
qla_printk(KERN_INFO, ha,
"HW State: FAILED\n");
qla82xx_device_state_handler(base_vha);
continue;
}
if (test_and_clear_bit(FCOE_CTX_RESET_NEEDED,
&base_vha->dpc_flags)) {
DEBUG(printk(KERN_INFO
"scsi(%ld): dpc: sched "
"qla82xx_fcoe_ctx_reset ha = %p\n",
base_vha->host_no, ha));
if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
&base_vha->dpc_flags))) {
if (qla82xx_fcoe_ctx_reset(base_vha)) {
/* FCoE-ctx reset failed.
* Escalate to chip-reset
*/
set_bit(ISP_ABORT_NEEDED,
&base_vha->dpc_flags);
}
clear_bit(ABORT_ISP_ACTIVE,
&base_vha->dpc_flags);
}
DEBUG(printk("scsi(%ld): dpc:"
" qla82xx_fcoe_ctx_reset end\n",
base_vha->host_no));
}
}
if (test_and_clear_bit(ISP_ABORT_NEEDED,
&base_vha->dpc_flags)) {
DEBUG(printk("scsi(%ld): dpc: sched "
"qla2x00_abort_isp ha = %p\n",
base_vha->host_no, ha));
if (!(test_and_set_bit(ABORT_ISP_ACTIVE,
&base_vha->dpc_flags))) {
if (ha->isp_ops->abort_isp(base_vha)) {
/* failed. retry later */
set_bit(ISP_ABORT_NEEDED,
&base_vha->dpc_flags);
}
clear_bit(ABORT_ISP_ACTIVE,
&base_vha->dpc_flags);
}
DEBUG(printk("scsi(%ld): dpc: qla2x00_abort_isp end\n",
base_vha->host_no));
}
if (test_bit(FCPORT_UPDATE_NEEDED, &base_vha->dpc_flags)) {
qla2x00_update_fcports(base_vha);
clear_bit(FCPORT_UPDATE_NEEDED, &base_vha->dpc_flags);
}
if (test_bit(ISP_QUIESCE_NEEDED, &base_vha->dpc_flags)) {
DEBUG(printk(KERN_INFO "scsi(%ld): dpc: sched "
"qla2x00_quiesce_needed ha = %p\n",
base_vha->host_no, ha));
qla82xx_device_state_handler(base_vha);
clear_bit(ISP_QUIESCE_NEEDED, &base_vha->dpc_flags);
if (!ha->flags.quiesce_owner) {
qla2x00_perform_loop_resync(base_vha);
qla82xx_idc_lock(ha);
qla82xx_clear_qsnt_ready(base_vha);
qla82xx_idc_unlock(ha);
}
}
if (test_and_clear_bit(RESET_MARKER_NEEDED,
&base_vha->dpc_flags) &&
(!(test_and_set_bit(RESET_ACTIVE, &base_vha->dpc_flags)))) {
DEBUG(printk("scsi(%ld): qla2x00_reset_marker()\n",
base_vha->host_no));
qla2x00_rst_aen(base_vha);
clear_bit(RESET_ACTIVE, &base_vha->dpc_flags);
}
/* Retry each device up to login retry count */
if ((test_and_clear_bit(RELOGIN_NEEDED,
&base_vha->dpc_flags)) &&
!test_bit(LOOP_RESYNC_NEEDED, &base_vha->dpc_flags) &&
atomic_read(&base_vha->loop_state) != LOOP_DOWN) {
DEBUG(printk("scsi(%ld): qla2x00_port_login()\n",
base_vha->host_no));
qla2x00_relogin(base_vha);
DEBUG(printk("scsi(%ld): qla2x00_port_login - end\n",
base_vha->host_no));
}
if (test_and_clear_bit(LOOP_RESYNC_NEEDED,
&base_vha->dpc_flags)) {
DEBUG(printk("scsi(%ld): qla2x00_loop_resync()\n",
base_vha->host_no));
if (!(test_and_set_bit(LOOP_RESYNC_ACTIVE,
&base_vha->dpc_flags))) {
rval = qla2x00_loop_resync(base_vha);
clear_bit(LOOP_RESYNC_ACTIVE,
&base_vha->dpc_flags);
}
DEBUG(printk("scsi(%ld): qla2x00_loop_resync - end\n",
base_vha->host_no));
}
if (test_bit(NPIV_CONFIG_NEEDED, &base_vha->dpc_flags) &&
atomic_read(&base_vha->loop_state) == LOOP_READY) {
clear_bit(NPIV_CONFIG_NEEDED, &base_vha->dpc_flags);
qla2xxx_flash_npiv_conf(base_vha);
}
if (!ha->interrupts_on)
ha->isp_ops->enable_intrs(ha);
if (test_and_clear_bit(BEACON_BLINK_NEEDED,
&base_vha->dpc_flags))
ha->isp_ops->beacon_blink(base_vha);
qla2x00_do_dpc_all_vps(base_vha);
ha->dpc_active = 0;
set_current_state(TASK_INTERRUPTIBLE);
} /* End of while(1) */
__set_current_state(TASK_RUNNING);
DEBUG(printk("scsi(%ld): DPC handler exiting\n", base_vha->host_no));
/*
* Make sure that nobody tries to wake us up again.
*/
ha->dpc_active = 0;
/* Cleanup any residual CTX SRBs. */
qla2x00_abort_all_cmds(base_vha, DID_NO_CONNECT << 16);
return 0;
}
void
qla2xxx_wake_dpc(struct scsi_qla_host *vha)
{
struct qla_hw_data *ha = vha->hw;
struct task_struct *t = ha->dpc_thread;
if (!test_bit(UNLOADING, &vha->dpc_flags) && t)
wake_up_process(t);
}
/*
* qla2x00_rst_aen
* Processes asynchronous reset.
*
* Input:
* ha = adapter block pointer.
*/
static void
qla2x00_rst_aen(scsi_qla_host_t *vha)
{
if (vha->flags.online && !vha->flags.reset_active &&
!atomic_read(&vha->loop_down_timer) &&
!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))) {
do {
clear_bit(RESET_MARKER_NEEDED, &vha->dpc_flags);
/*
* Issue marker command only when we are going to start
* the I/O.
*/
vha->marker_needed = 1;
} while (!atomic_read(&vha->loop_down_timer) &&
(test_bit(RESET_MARKER_NEEDED, &vha->dpc_flags)));
}
}
static void
qla2x00_sp_free_dma(srb_t *sp)
{
struct scsi_cmnd *cmd = sp->cmd;
struct qla_hw_data *ha = sp->fcport->vha->hw;
if (sp->flags & SRB_DMA_VALID) {
scsi_dma_unmap(cmd);
sp->flags &= ~SRB_DMA_VALID;
}
if (sp->flags & SRB_CRC_PROT_DMA_VALID) {
dma_unmap_sg(&ha->pdev->dev, scsi_prot_sglist(cmd),
scsi_prot_sg_count(cmd), cmd->sc_data_direction);
sp->flags &= ~SRB_CRC_PROT_DMA_VALID;
}
if (sp->flags & SRB_CRC_CTX_DSD_VALID) {
/* List assured to be having elements */
qla2x00_clean_dsd_pool(ha, sp);
sp->flags &= ~SRB_CRC_CTX_DSD_VALID;
}
if (sp->flags & SRB_CRC_CTX_DMA_VALID) {
dma_pool_free(ha->dl_dma_pool, sp->ctx,
((struct crc_context *)sp->ctx)->crc_ctx_dma);
sp->flags &= ~SRB_CRC_CTX_DMA_VALID;
}
CMD_SP(cmd) = NULL;
}
static void
qla2x00_sp_final_compl(struct qla_hw_data *ha, srb_t *sp)
{
struct scsi_cmnd *cmd = sp->cmd;
qla2x00_sp_free_dma(sp);
if (sp->flags & SRB_FCP_CMND_DMA_VALID) {
struct ct6_dsd *ctx = sp->ctx;
dma_pool_free(ha->fcp_cmnd_dma_pool, ctx->fcp_cmnd,
ctx->fcp_cmnd_dma);
list_splice(&ctx->dsd_list, &ha->gbl_dsd_list);
ha->gbl_dsd_inuse -= ctx->dsd_use_cnt;
ha->gbl_dsd_avail += ctx->dsd_use_cnt;
mempool_free(sp->ctx, ha->ctx_mempool);
sp->ctx = NULL;
}
mempool_free(sp, ha->srb_mempool);
cmd->scsi_done(cmd);
}
void
qla2x00_sp_compl(struct qla_hw_data *ha, srb_t *sp)
{
if (atomic_read(&sp->ref_count) == 0) {
DEBUG2(qla_printk(KERN_WARNING, ha,
"SP reference-count to ZERO -- sp=%p\n", sp));
DEBUG2(BUG());
return;
}
if (!atomic_dec_and_test(&sp->ref_count))
return;
qla2x00_sp_final_compl(ha, sp);
}
/**************************************************************************
* qla2x00_timer
*
* Description:
* One second timer
*
* Context: Interrupt
***************************************************************************/
void
qla2x00_timer(scsi_qla_host_t *vha)
{
unsigned long cpu_flags = 0;
int start_dpc = 0;
int index;
srb_t *sp;
uint16_t w;
struct qla_hw_data *ha = vha->hw;
struct req_que *req;
if (ha->flags.eeh_busy) {
qla2x00_restart_timer(vha, WATCH_INTERVAL);
return;
}
/* Hardware read to raise pending EEH errors during mailbox waits. */
if (!pci_channel_offline(ha->pdev))
pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
if (IS_QLA82XX(ha)) {
if (test_bit(ISP_QUIESCE_NEEDED, &vha->dpc_flags))
start_dpc++;
qla82xx_watchdog(vha);
}
/* Loop down handler. */
if (atomic_read(&vha->loop_down_timer) > 0 &&
!(test_bit(ABORT_ISP_ACTIVE, &vha->dpc_flags))
&& vha->flags.online) {
if (atomic_read(&vha->loop_down_timer) ==
vha->loop_down_abort_time) {
DEBUG(printk("scsi(%ld): Loop Down - aborting the "
"queues before time expire\n",
vha->host_no));
if (!IS_QLA2100(ha) && vha->link_down_timeout)
atomic_set(&vha->loop_state, LOOP_DEAD);
/*
* Schedule an ISP abort to return any FCP2-device
* commands.
*/
/* NPIV - scan physical port only */
if (!vha->vp_idx) {
spin_lock_irqsave(&ha->hardware_lock,
cpu_flags);
req = ha->req_q_map[0];
for (index = 1;
index < MAX_OUTSTANDING_COMMANDS;
index++) {
fc_port_t *sfcp;
sp = req->outstanding_cmds[index];
if (!sp)
continue;
if (sp->ctx && !IS_PROT_IO(sp))
continue;
sfcp = sp->fcport;
if (!(sfcp->flags & FCF_FCP2_DEVICE))
continue;
set_bit(ISP_ABORT_NEEDED,
&vha->dpc_flags);
break;
}
spin_unlock_irqrestore(&ha->hardware_lock,
cpu_flags);
}
start_dpc++;
}
/* if the loop has been down for 4 minutes, reinit adapter */
if (atomic_dec_and_test(&vha->loop_down_timer) != 0) {
if (!(vha->device_flags & DFLG_NO_CABLE)) {
DEBUG(printk("scsi(%ld): Loop down - "
"aborting ISP.\n",
vha->host_no));
qla_printk(KERN_WARNING, ha,
"Loop down - aborting ISP.\n");
set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
}
}
DEBUG3(printk("scsi(%ld): Loop Down - seconds remaining %d\n",
vha->host_no,
atomic_read(&vha->loop_down_timer)));
}
/* Check if beacon LED needs to be blinked */
if (ha->beacon_blink_led == 1) {
set_bit(BEACON_BLINK_NEEDED, &vha->dpc_flags);
start_dpc++;
}
/* Process any deferred work. */
if (!list_empty(&vha->work_list))
start_dpc++;
/* Schedule the DPC routine if needed */
if ((test_bit(ISP_ABORT_NEEDED, &vha->dpc_flags) ||
test_bit(LOOP_RESYNC_NEEDED, &vha->dpc_flags) ||
test_bit(FCPORT_UPDATE_NEEDED, &vha->dpc_flags) ||
start_dpc ||
test_bit(RESET_MARKER_NEEDED, &vha->dpc_flags) ||
test_bit(BEACON_BLINK_NEEDED, &vha->dpc_flags) ||
test_bit(ISP_UNRECOVERABLE, &vha->dpc_flags) ||
test_bit(FCOE_CTX_RESET_NEEDED, &vha->dpc_flags) ||
test_bit(VP_DPC_NEEDED, &vha->dpc_flags) ||
test_bit(RELOGIN_NEEDED, &vha->dpc_flags)))
qla2xxx_wake_dpc(vha);
qla2x00_restart_timer(vha, WATCH_INTERVAL);
}
/* Firmware interface routines. */
#define FW_BLOBS 8
#define FW_ISP21XX 0
#define FW_ISP22XX 1
#define FW_ISP2300 2
#define FW_ISP2322 3
#define FW_ISP24XX 4
#define FW_ISP25XX 5
#define FW_ISP81XX 6
#define FW_ISP82XX 7
#define FW_FILE_ISP21XX "ql2100_fw.bin"
#define FW_FILE_ISP22XX "ql2200_fw.bin"
#define FW_FILE_ISP2300 "ql2300_fw.bin"
#define FW_FILE_ISP2322 "ql2322_fw.bin"
#define FW_FILE_ISP24XX "ql2400_fw.bin"
#define FW_FILE_ISP25XX "ql2500_fw.bin"
#define FW_FILE_ISP81XX "ql8100_fw.bin"
#define FW_FILE_ISP82XX "ql8200_fw.bin"
static DEFINE_MUTEX(qla_fw_lock);
static struct fw_blob qla_fw_blobs[FW_BLOBS] = {
{ .name = FW_FILE_ISP21XX, .segs = { 0x1000, 0 }, },
{ .name = FW_FILE_ISP22XX, .segs = { 0x1000, 0 }, },
{ .name = FW_FILE_ISP2300, .segs = { 0x800, 0 }, },
{ .name = FW_FILE_ISP2322, .segs = { 0x800, 0x1c000, 0x1e000, 0 }, },
{ .name = FW_FILE_ISP24XX, },
{ .name = FW_FILE_ISP25XX, },
{ .name = FW_FILE_ISP81XX, },
{ .name = FW_FILE_ISP82XX, },
};
struct fw_blob *
qla2x00_request_firmware(scsi_qla_host_t *vha)
{
struct qla_hw_data *ha = vha->hw;
struct fw_blob *blob;
blob = NULL;
if (IS_QLA2100(ha)) {
blob = &qla_fw_blobs[FW_ISP21XX];
} else if (IS_QLA2200(ha)) {
blob = &qla_fw_blobs[FW_ISP22XX];
} else if (IS_QLA2300(ha) || IS_QLA2312(ha) || IS_QLA6312(ha)) {
blob = &qla_fw_blobs[FW_ISP2300];
} else if (IS_QLA2322(ha) || IS_QLA6322(ha)) {
blob = &qla_fw_blobs[FW_ISP2322];
} else if (IS_QLA24XX_TYPE(ha)) {
blob = &qla_fw_blobs[FW_ISP24XX];
} else if (IS_QLA25XX(ha)) {
blob = &qla_fw_blobs[FW_ISP25XX];
} else if (IS_QLA81XX(ha)) {
blob = &qla_fw_blobs[FW_ISP81XX];
} else if (IS_QLA82XX(ha)) {
blob = &qla_fw_blobs[FW_ISP82XX];
}
mutex_lock(&qla_fw_lock);
if (blob->fw)
goto out;
if (request_firmware(&blob->fw, blob->name, &ha->pdev->dev)) {
DEBUG2(printk("scsi(%ld): Failed to load firmware image "
"(%s).\n", vha->host_no, blob->name));
blob->fw = NULL;
blob = NULL;
goto out;
}
out:
mutex_unlock(&qla_fw_lock);
return blob;
}
static void
qla2x00_release_firmware(void)
{
int idx;
mutex_lock(&qla_fw_lock);
for (idx = 0; idx < FW_BLOBS; idx++)
if (qla_fw_blobs[idx].fw)
release_firmware(qla_fw_blobs[idx].fw);
mutex_unlock(&qla_fw_lock);
}
static pci_ers_result_t
qla2xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
{
scsi_qla_host_t *vha = pci_get_drvdata(pdev);
struct qla_hw_data *ha = vha->hw;
DEBUG2(qla_printk(KERN_WARNING, ha, "error_detected:state %x\n",
state));
switch (state) {
case pci_channel_io_normal:
ha->flags.eeh_busy = 0;
return PCI_ERS_RESULT_CAN_RECOVER;
case pci_channel_io_frozen:
ha->flags.eeh_busy = 1;
/* For ISP82XX complete any pending mailbox cmd */
if (IS_QLA82XX(ha)) {
ha->flags.isp82xx_fw_hung = 1;
if (ha->flags.mbox_busy) {
ha->flags.mbox_int = 1;
DEBUG2(qla_printk(KERN_ERR, ha,
"Due to pci channel io frozen, doing premature "
"completion of mbx command\n"));
complete(&ha->mbx_intr_comp);
}
}
qla2x00_free_irqs(vha);
pci_disable_device(pdev);
/* Return back all IOs */
qla2x00_abort_all_cmds(vha, DID_RESET << 16);
return PCI_ERS_RESULT_NEED_RESET;
case pci_channel_io_perm_failure:
ha->flags.pci_channel_io_perm_failure = 1;
qla2x00_abort_all_cmds(vha, DID_NO_CONNECT << 16);
return PCI_ERS_RESULT_DISCONNECT;
}
return PCI_ERS_RESULT_NEED_RESET;
}
static pci_ers_result_t
qla2xxx_pci_mmio_enabled(struct pci_dev *pdev)
{
int risc_paused = 0;
uint32_t stat;
unsigned long flags;
scsi_qla_host_t *base_vha = pci_get_drvdata(pdev);
struct qla_hw_data *ha = base_vha->hw;
struct device_reg_2xxx __iomem *reg = &ha->iobase->isp;
struct device_reg_24xx __iomem *reg24 = &ha->iobase->isp24;
if (IS_QLA82XX(ha))
return PCI_ERS_RESULT_RECOVERED;
spin_lock_irqsave(&ha->hardware_lock, flags);
if (IS_QLA2100(ha) || IS_QLA2200(ha)){
stat = RD_REG_DWORD(&reg->hccr);
if (stat & HCCR_RISC_PAUSE)
risc_paused = 1;
} else if (IS_QLA23XX(ha)) {
stat = RD_REG_DWORD(&reg->u.isp2300.host_status);
if (stat & HSR_RISC_PAUSED)
risc_paused = 1;
} else if (IS_FWI2_CAPABLE(ha)) {
stat = RD_REG_DWORD(&reg24->host_status);
if (stat & HSRX_RISC_PAUSED)
risc_paused = 1;
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
if (risc_paused) {
qla_printk(KERN_INFO, ha, "RISC paused -- mmio_enabled, "
"Dumping firmware!\n");
ha->isp_ops->fw_dump(base_vha, 0);
return PCI_ERS_RESULT_NEED_RESET;
} else
return PCI_ERS_RESULT_RECOVERED;
}
uint32_t qla82xx_error_recovery(scsi_qla_host_t *base_vha)
{
uint32_t rval = QLA_FUNCTION_FAILED;
uint32_t drv_active = 0;
struct qla_hw_data *ha = base_vha->hw;
int fn;
struct pci_dev *other_pdev = NULL;
DEBUG17(qla_printk(KERN_INFO, ha,
"scsi(%ld): In qla82xx_error_recovery\n", base_vha->host_no));
set_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
if (base_vha->flags.online) {
/* Abort all outstanding commands,
* so as to be requeued later */
qla2x00_abort_isp_cleanup(base_vha);
}
fn = PCI_FUNC(ha->pdev->devfn);
while (fn > 0) {
fn--;
DEBUG17(qla_printk(KERN_INFO, ha,
"Finding pci device at function = 0x%x\n", fn));
other_pdev =
pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
fn));
if (!other_pdev)
continue;
if (atomic_read(&other_pdev->enable_cnt)) {
DEBUG17(qla_printk(KERN_INFO, ha,
"Found PCI func availabe and enabled at 0x%x\n",
fn));
pci_dev_put(other_pdev);
break;
}
pci_dev_put(other_pdev);
}
if (!fn) {
/* Reset owner */
DEBUG17(qla_printk(KERN_INFO, ha,
"This devfn is reset owner = 0x%x\n", ha->pdev->devfn));
qla82xx_idc_lock(ha);
qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
QLA82XX_DEV_INITIALIZING);
qla82xx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION,
QLA82XX_IDC_VERSION);
drv_active = qla82xx_rd_32(ha, QLA82XX_CRB_DRV_ACTIVE);
DEBUG17(qla_printk(KERN_INFO, ha,
"drv_active = 0x%x\n", drv_active));
qla82xx_idc_unlock(ha);
/* Reset if device is not already reset
* drv_active would be 0 if a reset has already been done
*/
if (drv_active)
rval = qla82xx_start_firmware(base_vha);
else
rval = QLA_SUCCESS;
qla82xx_idc_lock(ha);
if (rval != QLA_SUCCESS) {
qla_printk(KERN_INFO, ha, "HW State: FAILED\n");
qla82xx_clear_drv_active(ha);
qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
QLA82XX_DEV_FAILED);
} else {
qla_printk(KERN_INFO, ha, "HW State: READY\n");
qla82xx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
QLA82XX_DEV_READY);
qla82xx_idc_unlock(ha);
ha->flags.isp82xx_fw_hung = 0;
rval = qla82xx_restart_isp(base_vha);
qla82xx_idc_lock(ha);
/* Clear driver state register */
qla82xx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0);
qla82xx_set_drv_active(base_vha);
}
qla82xx_idc_unlock(ha);
} else {
DEBUG17(qla_printk(KERN_INFO, ha,
"This devfn is not reset owner = 0x%x\n", ha->pdev->devfn));
if ((qla82xx_rd_32(ha, QLA82XX_CRB_DEV_STATE) ==
QLA82XX_DEV_READY)) {
ha->flags.isp82xx_fw_hung = 0;
rval = qla82xx_restart_isp(base_vha);
qla82xx_idc_lock(ha);
qla82xx_set_drv_active(base_vha);
qla82xx_idc_unlock(ha);
}
}
clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
return rval;
}
static pci_ers_result_t
qla2xxx_pci_slot_reset(struct pci_dev *pdev)
{
pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
scsi_qla_host_t *base_vha = pci_get_drvdata(pdev);
struct qla_hw_data *ha = base_vha->hw;
struct rsp_que *rsp;
int rc, retries = 10;
DEBUG17(qla_printk(KERN_WARNING, ha, "slot_reset\n"));
/* Workaround: qla2xxx driver which access hardware earlier
* needs error state to be pci_channel_io_online.
* Otherwise mailbox command timesout.
*/
pdev->error_state = pci_channel_io_normal;
pci_restore_state(pdev);
/* pci_restore_state() clears the saved_state flag of the device
* save restored state which resets saved_state flag
*/
pci_save_state(pdev);
if (ha->mem_only)
rc = pci_enable_device_mem(pdev);
else
rc = pci_enable_device(pdev);
if (rc) {
qla_printk(KERN_WARNING, ha,
"Can't re-enable PCI device after reset.\n");
goto exit_slot_reset;
}
rsp = ha->rsp_q_map[0];
if (qla2x00_request_irqs(ha, rsp))
goto exit_slot_reset;
if (ha->isp_ops->pci_config(base_vha))
goto exit_slot_reset;
if (IS_QLA82XX(ha)) {
if (qla82xx_error_recovery(base_vha) == QLA_SUCCESS) {
ret = PCI_ERS_RESULT_RECOVERED;
goto exit_slot_reset;
} else
goto exit_slot_reset;
}
while (ha->flags.mbox_busy && retries--)
msleep(1000);
set_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
if (ha->isp_ops->abort_isp(base_vha) == QLA_SUCCESS)
ret = PCI_ERS_RESULT_RECOVERED;
clear_bit(ABORT_ISP_ACTIVE, &base_vha->dpc_flags);
exit_slot_reset:
DEBUG17(qla_printk(KERN_WARNING, ha,
"slot_reset-return:ret=%x\n", ret));
return ret;
}
static void
qla2xxx_pci_resume(struct pci_dev *pdev)
{
scsi_qla_host_t *base_vha = pci_get_drvdata(pdev);
struct qla_hw_data *ha = base_vha->hw;
int ret;
DEBUG17(qla_printk(KERN_WARNING, ha, "pci_resume\n"));
ret = qla2x00_wait_for_hba_online(base_vha);
if (ret != QLA_SUCCESS) {
qla_printk(KERN_ERR, ha,
"the device failed to resume I/O "
"from slot/link_reset");
}
pci_cleanup_aer_uncorrect_error_status(pdev);
ha->flags.eeh_busy = 0;
}
static struct pci_error_handlers qla2xxx_err_handler = {
.error_detected = qla2xxx_pci_error_detected,
.mmio_enabled = qla2xxx_pci_mmio_enabled,
.slot_reset = qla2xxx_pci_slot_reset,
.resume = qla2xxx_pci_resume,
};
static struct pci_device_id qla2xxx_pci_tbl[] = {
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2100) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2200) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2300) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2312) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2322) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6312) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP6322) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2422) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2432) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8432) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5422) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP5432) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP2532) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8001) },
{ PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, PCI_DEVICE_ID_QLOGIC_ISP8021) },
{ 0 },
};
MODULE_DEVICE_TABLE(pci, qla2xxx_pci_tbl);
static struct pci_driver qla2xxx_pci_driver = {
.name = QLA2XXX_DRIVER_NAME,
.driver = {
.owner = THIS_MODULE,
},
.id_table = qla2xxx_pci_tbl,
.probe = qla2x00_probe_one,
.remove = qla2x00_remove_one,
.shutdown = qla2x00_shutdown,
.err_handler = &qla2xxx_err_handler,
};
static struct file_operations apidev_fops = {
.owner = THIS_MODULE,
llseek: automatically add .llseek fop All file_operations should get a .llseek operation so we can make nonseekable_open the default for future file operations without a .llseek pointer. The three cases that we can automatically detect are no_llseek, seq_lseek and default_llseek. For cases where we can we can automatically prove that the file offset is always ignored, we use noop_llseek, which maintains the current behavior of not returning an error from a seek. New drivers should normally not use noop_llseek but instead use no_llseek and call nonseekable_open at open time. Existing drivers can be converted to do the same when the maintainer knows for certain that no user code relies on calling seek on the device file. The generated code is often incorrectly indented and right now contains comments that clarify for each added line why a specific variant was chosen. In the version that gets submitted upstream, the comments will be gone and I will manually fix the indentation, because there does not seem to be a way to do that using coccinelle. Some amount of new code is currently sitting in linux-next that should get the same modifications, which I will do at the end of the merge window. Many thanks to Julia Lawall for helping me learn to write a semantic patch that does all this. ===== begin semantic patch ===== // This adds an llseek= method to all file operations, // as a preparation for making no_llseek the default. // // The rules are // - use no_llseek explicitly if we do nonseekable_open // - use seq_lseek for sequential files // - use default_llseek if we know we access f_pos // - use noop_llseek if we know we don't access f_pos, // but we still want to allow users to call lseek // @ open1 exists @ identifier nested_open; @@ nested_open(...) { <+... nonseekable_open(...) ...+> } @ open exists@ identifier open_f; identifier i, f; identifier open1.nested_open; @@ int open_f(struct inode *i, struct file *f) { <+... ( nonseekable_open(...) | nested_open(...) ) ...+> } @ read disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ read_no_fpos disable optional_qualifier exists @ identifier read_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off) { ... when != off } @ write @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; expression E; identifier func; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { <+... ( *off = E | *off += E | func(..., off, ...) | E = *off ) ...+> } @ write_no_fpos @ identifier write_f; identifier f, p, s, off; type ssize_t, size_t, loff_t; @@ ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off) { ... when != off } @ fops0 @ identifier fops; @@ struct file_operations fops = { ... }; @ has_llseek depends on fops0 @ identifier fops0.fops; identifier llseek_f; @@ struct file_operations fops = { ... .llseek = llseek_f, ... }; @ has_read depends on fops0 @ identifier fops0.fops; identifier read_f; @@ struct file_operations fops = { ... .read = read_f, ... }; @ has_write depends on fops0 @ identifier fops0.fops; identifier write_f; @@ struct file_operations fops = { ... .write = write_f, ... }; @ has_open depends on fops0 @ identifier fops0.fops; identifier open_f; @@ struct file_operations fops = { ... .open = open_f, ... }; // use no_llseek if we call nonseekable_open //////////////////////////////////////////// @ nonseekable1 depends on !has_llseek && has_open @ identifier fops0.fops; identifier nso ~= "nonseekable_open"; @@ struct file_operations fops = { ... .open = nso, ... +.llseek = no_llseek, /* nonseekable */ }; @ nonseekable2 depends on !has_llseek @ identifier fops0.fops; identifier open.open_f; @@ struct file_operations fops = { ... .open = open_f, ... +.llseek = no_llseek, /* open uses nonseekable */ }; // use seq_lseek for sequential files ///////////////////////////////////// @ seq depends on !has_llseek @ identifier fops0.fops; identifier sr ~= "seq_read"; @@ struct file_operations fops = { ... .read = sr, ... +.llseek = seq_lseek, /* we have seq_read */ }; // use default_llseek if there is a readdir /////////////////////////////////////////// @ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier readdir_e; @@ // any other fop is used that changes pos struct file_operations fops = { ... .readdir = readdir_e, ... +.llseek = default_llseek, /* readdir is present */ }; // use default_llseek if at least one of read/write touches f_pos ///////////////////////////////////////////////////////////////// @ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read.read_f; @@ // read fops use offset struct file_operations fops = { ... .read = read_f, ... +.llseek = default_llseek, /* read accesses f_pos */ }; @ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, ... + .llseek = default_llseek, /* write accesses f_pos */ }; // Use noop_llseek if neither read nor write accesses f_pos /////////////////////////////////////////////////////////// @ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; identifier write_no_fpos.write_f; @@ // write fops use offset struct file_operations fops = { ... .write = write_f, .read = read_f, ... +.llseek = noop_llseek, /* read and write both use no f_pos */ }; @ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier write_no_fpos.write_f; @@ struct file_operations fops = { ... .write = write_f, ... +.llseek = noop_llseek, /* write uses no f_pos */ }; @ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; identifier read_no_fpos.read_f; @@ struct file_operations fops = { ... .read = read_f, ... +.llseek = noop_llseek, /* read uses no f_pos */ }; @ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @ identifier fops0.fops; @@ struct file_operations fops = { ... +.llseek = noop_llseek, /* no read or write fn */ }; ===== End semantic patch ===== Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Julia Lawall <julia@diku.dk> Cc: Christoph Hellwig <hch@infradead.org>
2010-08-15 16:52:59 +00:00
.llseek = noop_llseek,
};
/**
* qla2x00_module_init - Module initialization.
**/
static int __init
qla2x00_module_init(void)
{
int ret = 0;
/* Allocate cache for SRBs. */
srb_cachep = kmem_cache_create("qla2xxx_srbs", sizeof(srb_t), 0,
SLAB_HWCACHE_ALIGN, NULL);
if (srb_cachep == NULL) {
printk(KERN_ERR
"qla2xxx: Unable to allocate SRB cache...Failing load!\n");
return -ENOMEM;
}
/* Derive version string. */
strcpy(qla2x00_version_str, QLA2XXX_VERSION);
if (ql2xextended_error_logging)
strcat(qla2x00_version_str, "-debug");
qla2xxx_transport_template =
fc_attach_transport(&qla2xxx_transport_functions);
if (!qla2xxx_transport_template) {
kmem_cache_destroy(srb_cachep);
return -ENODEV;
}
apidev_major = register_chrdev(0, QLA2XXX_APIDEV, &apidev_fops);
if (apidev_major < 0) {
printk(KERN_WARNING "qla2xxx: Unable to register char device "
"%s\n", QLA2XXX_APIDEV);
}
qla2xxx_transport_vport_template =
fc_attach_transport(&qla2xxx_transport_vport_functions);
if (!qla2xxx_transport_vport_template) {
kmem_cache_destroy(srb_cachep);
fc_release_transport(qla2xxx_transport_template);
return -ENODEV;
}
printk(KERN_INFO "QLogic Fibre Channel HBA Driver: %s\n",
qla2x00_version_str);
ret = pci_register_driver(&qla2xxx_pci_driver);
if (ret) {
kmem_cache_destroy(srb_cachep);
fc_release_transport(qla2xxx_transport_template);
fc_release_transport(qla2xxx_transport_vport_template);
}
return ret;
}
/**
* qla2x00_module_exit - Module cleanup.
**/
static void __exit
qla2x00_module_exit(void)
{
unregister_chrdev(apidev_major, QLA2XXX_APIDEV);
pci_unregister_driver(&qla2xxx_pci_driver);
qla2x00_release_firmware();
kmem_cache_destroy(srb_cachep);
if (ctx_cachep)
kmem_cache_destroy(ctx_cachep);
fc_release_transport(qla2xxx_transport_template);
fc_release_transport(qla2xxx_transport_vport_template);
}
module_init(qla2x00_module_init);
module_exit(qla2x00_module_exit);
MODULE_AUTHOR("QLogic Corporation");
MODULE_DESCRIPTION("QLogic Fibre Channel HBA Driver");
MODULE_LICENSE("GPL");
MODULE_VERSION(QLA2XXX_VERSION);
MODULE_FIRMWARE(FW_FILE_ISP21XX);
MODULE_FIRMWARE(FW_FILE_ISP22XX);
MODULE_FIRMWARE(FW_FILE_ISP2300);
MODULE_FIRMWARE(FW_FILE_ISP2322);
MODULE_FIRMWARE(FW_FILE_ISP24XX);
MODULE_FIRMWARE(FW_FILE_ISP25XX);