2007-09-07 07:15:31 +00:00
|
|
|
/*
|
2008-06-10 16:20:58 +00:00
|
|
|
* zfcp device driver
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
2008-06-10 16:20:58 +00:00
|
|
|
* Interface to Linux SCSI midlayer.
|
2007-09-07 07:15:31 +00:00
|
|
|
*
|
2008-06-10 16:20:58 +00:00
|
|
|
* Copyright IBM Corporation 2002, 2008
|
2005-04-16 22:20:36 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include "zfcp_ext.h"
|
2007-05-08 09:16:52 +00:00
|
|
|
#include <asm/atomic.h>
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* Find start of Sense Information in FCP response unit*/
|
2008-07-02 08:56:36 +00:00
|
|
|
char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *fcp_rsp_iu)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
char *fcp_sns_info_ptr;
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
fcp_sns_info_ptr = (unsigned char *) &fcp_rsp_iu[1];
|
2005-04-16 22:20:36 +00:00
|
|
|
if (fcp_rsp_iu->validity.bits.fcp_rsp_len_valid)
|
2008-07-02 08:56:36 +00:00
|
|
|
fcp_sns_info_ptr += fcp_rsp_iu->fcp_rsp_len;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
return fcp_sns_info_ptr;
|
|
|
|
}
|
|
|
|
|
2006-08-02 09:05:52 +00:00
|
|
|
static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
|
2008-11-04 15:35:05 +00:00
|
|
|
atomic_clear_mask(ZFCP_STATUS_UNIT_REGISTERED, &unit->status);
|
|
|
|
unit->device = NULL;
|
|
|
|
zfcp_erp_unit_failed(unit, 12, NULL);
|
|
|
|
zfcp_unit_put(unit);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
if (sdp->tagged_supported)
|
2008-07-02 08:56:36 +00:00
|
|
|
scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, 32);
|
2005-04-16 22:20:36 +00:00
|
|
|
else
|
|
|
|
scsi_adjust_queue_depth(sdp, 0, 1);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2008-07-02 08:56:35 +00:00
|
|
|
set_host_byte(scpnt, result);
|
2005-09-13 19:50:38 +00:00
|
|
|
if ((scpnt->device != NULL) && (scpnt->device->host != NULL))
|
|
|
|
zfcp_scsi_dbf_event_result("fail", 4,
|
|
|
|
(struct zfcp_adapter*) scpnt->device->host->hostdata[0],
|
2006-02-11 00:42:58 +00:00
|
|
|
scpnt, NULL);
|
2005-04-16 22:20:36 +00:00
|
|
|
/* return directly */
|
|
|
|
scpnt->scsi_done(scpnt);
|
|
|
|
}
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
|
|
|
|
void (*done) (struct scsi_cmnd *))
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct zfcp_unit *unit;
|
|
|
|
struct zfcp_adapter *adapter;
|
2008-07-02 08:56:36 +00:00
|
|
|
int status;
|
|
|
|
int ret;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* reset the status for this request */
|
|
|
|
scpnt->result = 0;
|
|
|
|
scpnt->host_scribble = NULL;
|
|
|
|
scpnt->scsi_done = done;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* figure out adapter and target device
|
|
|
|
* (stored there by zfcp_scsi_slave_alloc)
|
|
|
|
*/
|
|
|
|
adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
|
2008-07-02 08:56:36 +00:00
|
|
|
unit = scpnt->device->hostdata;
|
|
|
|
|
|
|
|
BUG_ON(!adapter || (adapter != unit->port->adapter));
|
|
|
|
BUG_ON(!scpnt->scsi_done);
|
|
|
|
|
|
|
|
if (unlikely(!unit)) {
|
|
|
|
zfcp_scsi_command_fail(scpnt, DID_NO_CONNECT);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
status = atomic_read(&unit->status);
|
|
|
|
if (unlikely((status & ZFCP_STATUS_COMMON_ERP_FAILED) ||
|
|
|
|
!(status & ZFCP_STATUS_COMMON_RUNNING))) {
|
|
|
|
zfcp_scsi_command_fail(scpnt, DID_ERROR);
|
|
|
|
return 0;;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = zfcp_fsf_send_fcp_command_task(adapter, unit, scpnt, 0,
|
|
|
|
ZFCP_REQ_AUTO_CLEANUP);
|
|
|
|
if (unlikely(ret == -EBUSY))
|
|
|
|
zfcp_scsi_command_fail(scpnt, DID_NO_CONNECT);
|
|
|
|
else if (unlikely(ret < 0))
|
|
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
return ret;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *adapter,
|
|
|
|
int channel, unsigned int id,
|
|
|
|
unsigned int lun)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct zfcp_port *port;
|
2008-07-02 08:56:36 +00:00
|
|
|
struct zfcp_unit *unit;
|
2008-10-01 10:42:20 +00:00
|
|
|
int scsi_lun;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
list_for_each_entry(port, &adapter->port_list_head, list) {
|
2005-08-27 18:07:54 +00:00
|
|
|
if (!port->rport || (id != port->rport->scsi_target_id))
|
2005-04-16 22:20:36 +00:00
|
|
|
continue;
|
2008-10-01 10:42:20 +00:00
|
|
|
list_for_each_entry(unit, &port->unit_list_head, list) {
|
|
|
|
scsi_lun = scsilun_to_int(
|
|
|
|
(struct scsi_lun *)&unit->fcp_lun);
|
|
|
|
if (lun == scsi_lun)
|
2008-07-02 08:56:36 +00:00
|
|
|
return unit;
|
2008-10-01 10:42:20 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2008-07-02 08:56:36 +00:00
|
|
|
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int zfcp_scsi_slave_alloc(struct scsi_device *sdp)
|
|
|
|
{
|
|
|
|
struct zfcp_adapter *adapter;
|
|
|
|
struct zfcp_unit *unit;
|
|
|
|
unsigned long flags;
|
|
|
|
int retval = -ENXIO;
|
|
|
|
|
|
|
|
adapter = (struct zfcp_adapter *) sdp->host->hostdata[0];
|
|
|
|
if (!adapter)
|
|
|
|
goto out;
|
|
|
|
|
|
|
|
read_lock_irqsave(&zfcp_data.config_lock, flags);
|
|
|
|
unit = zfcp_unit_lookup(adapter, sdp->channel, sdp->id, sdp->lun);
|
|
|
|
if (unit &&
|
|
|
|
(atomic_read(&unit->status) & ZFCP_STATUS_UNIT_REGISTERED)) {
|
|
|
|
sdp->hostdata = unit;
|
|
|
|
unit->device = sdp;
|
|
|
|
zfcp_unit_get(unit);
|
|
|
|
retval = 0;
|
|
|
|
}
|
|
|
|
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
|
|
|
|
out:
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2007-02-05 20:16:47 +00:00
|
|
|
static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-09-13 19:47:52 +00:00
|
|
|
struct Scsi_Host *scsi_host;
|
|
|
|
struct zfcp_adapter *adapter;
|
|
|
|
struct zfcp_unit *unit;
|
2006-09-18 20:29:20 +00:00
|
|
|
struct zfcp_fsf_req *fsf_req;
|
2005-04-16 22:20:36 +00:00
|
|
|
unsigned long flags;
|
2008-07-02 08:56:36 +00:00
|
|
|
unsigned long old_req_id = (unsigned long) scpnt->host_scribble;
|
2006-09-18 20:29:20 +00:00
|
|
|
int retval = SUCCESS;
|
2005-09-13 19:47:52 +00:00
|
|
|
|
|
|
|
scsi_host = scpnt->device->host;
|
|
|
|
adapter = (struct zfcp_adapter *) scsi_host->hostdata[0];
|
2008-07-02 08:56:36 +00:00
|
|
|
unit = scpnt->device->hostdata;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-09-13 19:47:52 +00:00
|
|
|
/* avoid race condition between late normal completion and abort */
|
2005-04-16 22:20:36 +00:00
|
|
|
write_lock_irqsave(&adapter->abort_lock, flags);
|
|
|
|
|
2006-09-18 20:29:20 +00:00
|
|
|
/* Check whether corresponding fsf_req is still pending */
|
|
|
|
spin_lock(&adapter->req_list_lock);
|
2008-07-02 08:56:36 +00:00
|
|
|
fsf_req = zfcp_reqlist_find(adapter, old_req_id);
|
2006-09-18 20:29:20 +00:00
|
|
|
spin_unlock(&adapter->req_list_lock);
|
|
|
|
if (!fsf_req) {
|
2005-04-16 22:20:36 +00:00
|
|
|
write_unlock_irqrestore(&adapter->abort_lock, flags);
|
2006-09-18 20:29:20 +00:00
|
|
|
zfcp_scsi_dbf_event_abort("lte1", adapter, scpnt, NULL, 0);
|
2008-07-02 08:56:36 +00:00
|
|
|
return retval;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2008-07-02 08:56:39 +00:00
|
|
|
fsf_req->data = NULL;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-09-18 20:29:20 +00:00
|
|
|
/* don't access old fsf_req after releasing the abort_lock */
|
2005-04-16 22:20:36 +00:00
|
|
|
write_unlock_irqrestore(&adapter->abort_lock, flags);
|
2006-09-18 20:29:20 +00:00
|
|
|
|
|
|
|
fsf_req = zfcp_fsf_abort_fcp_command(old_req_id, adapter, unit, 0);
|
|
|
|
if (!fsf_req) {
|
2006-02-11 00:42:58 +00:00
|
|
|
zfcp_scsi_dbf_event_abort("nres", adapter, scpnt, NULL,
|
2006-09-18 20:29:20 +00:00
|
|
|
old_req_id);
|
2005-04-16 22:20:36 +00:00
|
|
|
retval = FAILED;
|
2008-07-02 08:56:36 +00:00
|
|
|
return retval;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-09-18 20:29:20 +00:00
|
|
|
__wait_event(fsf_req->completion_wq,
|
|
|
|
fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
|
2005-09-13 19:47:52 +00:00
|
|
|
|
2006-09-18 20:29:20 +00:00
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED) {
|
|
|
|
zfcp_scsi_dbf_event_abort("okay", adapter, scpnt, fsf_req, 0);
|
|
|
|
} else if (fsf_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED) {
|
|
|
|
zfcp_scsi_dbf_event_abort("lte2", adapter, scpnt, fsf_req, 0);
|
2005-04-16 22:20:36 +00:00
|
|
|
} else {
|
2006-09-18 20:29:20 +00:00
|
|
|
zfcp_scsi_dbf_event_abort("fail", adapter, scpnt, fsf_req, 0);
|
2005-04-16 22:20:36 +00:00
|
|
|
retval = FAILED;
|
|
|
|
}
|
2006-09-18 20:29:20 +00:00
|
|
|
zfcp_fsf_req_free(fsf_req);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
return retval;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
static int zfcp_task_mgmt_function(struct zfcp_unit *unit, u8 tm_flags,
|
|
|
|
struct scsi_cmnd *scpnt)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct zfcp_adapter *adapter = unit->port->adapter;
|
|
|
|
struct zfcp_fsf_req *fsf_req;
|
2008-07-02 08:56:36 +00:00
|
|
|
int retval = SUCCESS;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/* issue task management function */
|
2008-07-02 08:56:39 +00:00
|
|
|
fsf_req = zfcp_fsf_send_fcp_ctm(adapter, unit, tm_flags, 0);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (!fsf_req) {
|
2005-09-13 19:50:38 +00:00
|
|
|
zfcp_scsi_dbf_event_devreset("nres", tm_flags, unit, scpnt);
|
2008-07-02 08:56:36 +00:00
|
|
|
return FAILED;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2005-09-13 19:48:33 +00:00
|
|
|
__wait_event(fsf_req->completion_wq,
|
|
|
|
fsf_req->status & ZFCP_STATUS_FSFREQ_COMPLETED);
|
|
|
|
|
2005-09-13 19:50:38 +00:00
|
|
|
/*
|
|
|
|
* check completion status of task management function
|
|
|
|
*/
|
|
|
|
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
|
|
|
|
zfcp_scsi_dbf_event_devreset("fail", tm_flags, unit, scpnt);
|
2008-07-02 08:56:36 +00:00
|
|
|
retval = FAILED;
|
2005-09-13 19:50:38 +00:00
|
|
|
} else if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCNOTSUPP) {
|
|
|
|
zfcp_scsi_dbf_event_devreset("nsup", tm_flags, unit, scpnt);
|
2008-07-02 08:56:36 +00:00
|
|
|
retval = FAILED;
|
2005-09-13 19:50:38 +00:00
|
|
|
} else
|
|
|
|
zfcp_scsi_dbf_event_devreset("okay", tm_flags, unit, scpnt);
|
2005-09-13 19:48:33 +00:00
|
|
|
|
|
|
|
zfcp_fsf_req_free(fsf_req);
|
2008-07-02 08:56:36 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
|
|
|
|
{
|
|
|
|
struct zfcp_unit *unit = scpnt->device->hostdata;
|
|
|
|
|
|
|
|
if (!unit) {
|
|
|
|
WARN_ON(1);
|
|
|
|
return SUCCESS;
|
|
|
|
}
|
|
|
|
return zfcp_task_mgmt_function(unit, FCP_LOGICAL_UNIT_RESET, scpnt);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
|
|
|
|
{
|
|
|
|
struct zfcp_unit *unit = scpnt->device->hostdata;
|
|
|
|
|
|
|
|
if (!unit) {
|
|
|
|
WARN_ON(1);
|
|
|
|
return SUCCESS;
|
|
|
|
}
|
|
|
|
return zfcp_task_mgmt_function(unit, FCP_TARGET_RESET, scpnt);
|
|
|
|
}
|
|
|
|
|
2007-02-05 20:16:47 +00:00
|
|
|
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-08-02 09:05:52 +00:00
|
|
|
struct zfcp_unit *unit;
|
|
|
|
struct zfcp_adapter *adapter;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
unit = scpnt->device->hostdata;
|
2006-08-02 09:05:52 +00:00
|
|
|
adapter = unit->port->adapter;
|
2008-04-18 10:51:55 +00:00
|
|
|
zfcp_erp_adapter_reopen(adapter, 0, 141, scpnt);
|
2006-09-18 20:30:36 +00:00
|
|
|
zfcp_erp_wait(adapter);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-09-13 19:49:52 +00:00
|
|
|
return SUCCESS;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2008-07-02 08:56:36 +00:00
|
|
|
struct ccw_dev_id dev_id;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-05-09 09:01:24 +00:00
|
|
|
if (adapter->scsi_host)
|
2008-07-02 08:56:36 +00:00
|
|
|
return 0;
|
2007-05-09 09:01:24 +00:00
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
ccw_device_get_id(adapter->ccw_device, &dev_id);
|
2005-04-16 22:20:36 +00:00
|
|
|
/* register adapter as SCSI host with mid layer of SCSI stack */
|
|
|
|
adapter->scsi_host = scsi_host_alloc(&zfcp_data.scsi_host_template,
|
|
|
|
sizeof (struct zfcp_adapter *));
|
|
|
|
if (!adapter->scsi_host) {
|
2008-06-10 16:20:58 +00:00
|
|
|
dev_err(&adapter->ccw_device->dev,
|
2008-10-01 10:42:15 +00:00
|
|
|
"Registering the FCP device with the "
|
|
|
|
"SCSI stack failed\n");
|
2008-07-02 08:56:36 +00:00
|
|
|
return -EIO;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* tell the SCSI stack some characteristics of this adapter */
|
|
|
|
adapter->scsi_host->max_id = 1;
|
|
|
|
adapter->scsi_host->max_lun = 1;
|
|
|
|
adapter->scsi_host->max_channel = 0;
|
2008-07-02 08:56:36 +00:00
|
|
|
adapter->scsi_host->unique_id = dev_id.devno;
|
|
|
|
adapter->scsi_host->max_cmd_len = 255;
|
2006-09-18 20:28:49 +00:00
|
|
|
adapter->scsi_host->transportt = zfcp_data.scsi_transport_template;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
|
|
|
|
|
|
|
|
if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
|
|
|
|
scsi_host_put(adapter->scsi_host);
|
2008-07-02 08:56:36 +00:00
|
|
|
return -EIO;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2008-07-02 08:56:36 +00:00
|
|
|
|
|
|
|
return 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
void zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct Scsi_Host *shost;
|
2005-09-19 14:56:17 +00:00
|
|
|
struct zfcp_port *port;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
shost = adapter->scsi_host;
|
|
|
|
if (!shost)
|
|
|
|
return;
|
2008-07-02 08:56:36 +00:00
|
|
|
|
2005-09-19 14:56:17 +00:00
|
|
|
read_lock_irq(&zfcp_data.config_lock);
|
|
|
|
list_for_each_entry(port, &adapter->port_list_head, list)
|
|
|
|
if (port->rport)
|
|
|
|
port->rport = NULL;
|
2008-07-02 08:56:36 +00:00
|
|
|
|
2005-09-19 14:56:17 +00:00
|
|
|
read_unlock_irq(&zfcp_data.config_lock);
|
2005-08-27 18:07:54 +00:00
|
|
|
fc_remove_host(shost);
|
2005-04-16 22:20:36 +00:00
|
|
|
scsi_remove_host(shost);
|
|
|
|
scsi_host_put(shost);
|
|
|
|
adapter->scsi_host = NULL;
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2006-01-05 08:59:34 +00:00
|
|
|
static struct fc_host_statistics*
|
|
|
|
zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-01-05 08:59:34 +00:00
|
|
|
struct fc_host_statistics *fc_stats;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-01-05 08:59:34 +00:00
|
|
|
if (!adapter->fc_stats) {
|
|
|
|
fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
|
|
|
|
if (!fc_stats)
|
|
|
|
return NULL;
|
|
|
|
adapter->fc_stats = fc_stats; /* freed in adater_dequeue */
|
|
|
|
}
|
|
|
|
memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
|
|
|
|
return adapter->fc_stats;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
|
|
|
|
struct fsf_qtcb_bottom_port *data,
|
|
|
|
struct fsf_qtcb_bottom_port *old)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2008-07-02 08:56:36 +00:00
|
|
|
fc_stats->seconds_since_last_reset =
|
|
|
|
data->seconds_since_last_reset - old->seconds_since_last_reset;
|
2006-01-05 08:59:34 +00:00
|
|
|
fc_stats->tx_frames = data->tx_frames - old->tx_frames;
|
|
|
|
fc_stats->tx_words = data->tx_words - old->tx_words;
|
|
|
|
fc_stats->rx_frames = data->rx_frames - old->rx_frames;
|
|
|
|
fc_stats->rx_words = data->rx_words - old->rx_words;
|
|
|
|
fc_stats->lip_count = data->lip - old->lip;
|
|
|
|
fc_stats->nos_count = data->nos - old->nos;
|
|
|
|
fc_stats->error_frames = data->error_frames - old->error_frames;
|
|
|
|
fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
|
|
|
|
fc_stats->link_failure_count = data->link_failure - old->link_failure;
|
|
|
|
fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
|
2008-07-02 08:56:36 +00:00
|
|
|
fc_stats->loss_of_signal_count =
|
|
|
|
data->loss_of_signal - old->loss_of_signal;
|
|
|
|
fc_stats->prim_seq_protocol_err_count =
|
|
|
|
data->psp_error_counts - old->psp_error_counts;
|
|
|
|
fc_stats->invalid_tx_word_count =
|
|
|
|
data->invalid_tx_words - old->invalid_tx_words;
|
2006-01-05 08:59:34 +00:00
|
|
|
fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
|
2008-07-02 08:56:36 +00:00
|
|
|
fc_stats->fcp_input_requests =
|
|
|
|
data->input_requests - old->input_requests;
|
|
|
|
fc_stats->fcp_output_requests =
|
|
|
|
data->output_requests - old->output_requests;
|
|
|
|
fc_stats->fcp_control_requests =
|
|
|
|
data->control_requests - old->control_requests;
|
2006-01-05 08:59:34 +00:00
|
|
|
fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
|
|
|
|
fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
|
|
|
|
struct fsf_qtcb_bottom_port *data)
|
2006-01-05 08:59:34 +00:00
|
|
|
{
|
|
|
|
fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
|
|
|
|
fc_stats->tx_frames = data->tx_frames;
|
|
|
|
fc_stats->tx_words = data->tx_words;
|
|
|
|
fc_stats->rx_frames = data->rx_frames;
|
|
|
|
fc_stats->rx_words = data->rx_words;
|
|
|
|
fc_stats->lip_count = data->lip;
|
|
|
|
fc_stats->nos_count = data->nos;
|
|
|
|
fc_stats->error_frames = data->error_frames;
|
|
|
|
fc_stats->dumped_frames = data->dumped_frames;
|
|
|
|
fc_stats->link_failure_count = data->link_failure;
|
|
|
|
fc_stats->loss_of_sync_count = data->loss_of_sync;
|
|
|
|
fc_stats->loss_of_signal_count = data->loss_of_signal;
|
|
|
|
fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
|
|
|
|
fc_stats->invalid_tx_word_count = data->invalid_tx_words;
|
|
|
|
fc_stats->invalid_crc_count = data->invalid_crcs;
|
|
|
|
fc_stats->fcp_input_requests = data->input_requests;
|
|
|
|
fc_stats->fcp_output_requests = data->output_requests;
|
|
|
|
fc_stats->fcp_control_requests = data->control_requests;
|
|
|
|
fc_stats->fcp_input_megabytes = data->input_mb;
|
|
|
|
fc_stats->fcp_output_megabytes = data->output_mb;
|
|
|
|
}
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host)
|
2006-01-05 08:59:34 +00:00
|
|
|
{
|
|
|
|
struct zfcp_adapter *adapter;
|
|
|
|
struct fc_host_statistics *fc_stats;
|
|
|
|
struct fsf_qtcb_bottom_port *data;
|
|
|
|
int ret;
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
adapter = (struct zfcp_adapter *)host->hostdata[0];
|
2006-01-05 08:59:34 +00:00
|
|
|
fc_stats = zfcp_init_fc_host_stats(adapter);
|
|
|
|
if (!fc_stats)
|
|
|
|
return NULL;
|
|
|
|
|
2006-05-22 16:17:30 +00:00
|
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
2006-01-05 08:59:34 +00:00
|
|
|
if (!data)
|
|
|
|
return NULL;
|
|
|
|
|
2007-08-28 07:31:09 +00:00
|
|
|
ret = zfcp_fsf_exchange_port_data_sync(adapter, data);
|
2006-01-05 08:59:34 +00:00
|
|
|
if (ret) {
|
|
|
|
kfree(data);
|
2008-07-02 08:56:36 +00:00
|
|
|
return NULL;
|
2006-01-05 08:59:34 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
if (adapter->stats_reset &&
|
|
|
|
((jiffies/HZ - adapter->stats_reset) <
|
2008-07-02 08:56:36 +00:00
|
|
|
data->seconds_since_last_reset))
|
2006-01-05 08:59:34 +00:00
|
|
|
zfcp_adjust_fc_host_stats(fc_stats, data,
|
|
|
|
adapter->stats_reset_data);
|
2008-07-02 08:56:36 +00:00
|
|
|
else
|
2006-01-05 08:59:34 +00:00
|
|
|
zfcp_set_fc_host_stats(fc_stats, data);
|
|
|
|
|
|
|
|
kfree(data);
|
|
|
|
return fc_stats;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-01-05 08:59:34 +00:00
|
|
|
struct zfcp_adapter *adapter;
|
2008-07-02 08:56:36 +00:00
|
|
|
struct fsf_qtcb_bottom_port *data;
|
2006-01-05 08:59:34 +00:00
|
|
|
int ret;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-01-05 08:59:34 +00:00
|
|
|
adapter = (struct zfcp_adapter *)shost->hostdata[0];
|
2006-05-22 16:17:30 +00:00
|
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
2006-01-05 08:59:34 +00:00
|
|
|
if (!data)
|
|
|
|
return;
|
|
|
|
|
2007-08-28 07:31:09 +00:00
|
|
|
ret = zfcp_fsf_exchange_port_data_sync(adapter, data);
|
2008-07-02 08:56:36 +00:00
|
|
|
if (ret)
|
2007-08-08 08:47:02 +00:00
|
|
|
kfree(data);
|
2008-07-02 08:56:36 +00:00
|
|
|
else {
|
2006-01-05 08:59:34 +00:00
|
|
|
adapter->stats_reset = jiffies/HZ;
|
2008-07-02 08:56:36 +00:00
|
|
|
kfree(adapter->stats_reset_data);
|
2006-01-05 08:59:34 +00:00
|
|
|
adapter->stats_reset_data = data; /* finally freed in
|
2008-07-02 08:56:36 +00:00
|
|
|
adapter_dequeue */
|
2006-01-05 08:59:34 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2008-06-10 16:20:59 +00:00
|
|
|
static void zfcp_get_host_port_state(struct Scsi_Host *shost)
|
|
|
|
{
|
|
|
|
struct zfcp_adapter *adapter =
|
|
|
|
(struct zfcp_adapter *)shost->hostdata[0];
|
|
|
|
int status = atomic_read(&adapter->status);
|
|
|
|
|
|
|
|
if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
|
|
|
|
!(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED))
|
|
|
|
fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
|
|
|
|
else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
|
|
|
|
fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
|
|
|
|
else if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
|
|
|
|
fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
|
|
|
|
else
|
|
|
|
fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
|
|
|
|
}
|
|
|
|
|
2006-05-22 16:25:56 +00:00
|
|
|
static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
|
|
|
|
{
|
|
|
|
rport->dev_loss_tmo = timeout;
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
struct fc_function_template zfcp_transport_functions = {
|
|
|
|
.show_starget_port_id = 1,
|
|
|
|
.show_starget_port_name = 1,
|
|
|
|
.show_starget_node_name = 1,
|
2005-08-27 18:07:54 +00:00
|
|
|
.show_rport_supported_classes = 1,
|
2006-05-22 16:24:33 +00:00
|
|
|
.show_rport_maxframe_size = 1,
|
2006-05-22 16:25:56 +00:00
|
|
|
.show_rport_dev_loss_tmo = 1,
|
2005-08-27 18:07:54 +00:00
|
|
|
.show_host_node_name = 1,
|
|
|
|
.show_host_port_name = 1,
|
2006-01-13 01:26:11 +00:00
|
|
|
.show_host_permanent_port_name = 1,
|
2005-08-27 18:07:54 +00:00
|
|
|
.show_host_supported_classes = 1,
|
2006-01-13 01:26:11 +00:00
|
|
|
.show_host_supported_speeds = 1,
|
2005-09-19 14:56:17 +00:00
|
|
|
.show_host_maxframe_size = 1,
|
2005-08-27 18:07:54 +00:00
|
|
|
.show_host_serial_number = 1,
|
2006-01-05 08:59:34 +00:00
|
|
|
.get_fc_host_stats = zfcp_get_fc_host_stats,
|
|
|
|
.reset_fc_host_stats = zfcp_reset_fc_host_stats,
|
2006-05-22 16:25:56 +00:00
|
|
|
.set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
|
2008-06-10 16:20:59 +00:00
|
|
|
.get_host_port_state = zfcp_get_host_port_state,
|
|
|
|
.show_host_port_state = 1,
|
2006-01-05 08:59:34 +00:00
|
|
|
/* no functions registered for following dynamic attributes but
|
|
|
|
directly set by LLDD */
|
2006-01-13 01:26:11 +00:00
|
|
|
.show_host_port_type = 1,
|
2005-09-19 14:56:17 +00:00
|
|
|
.show_host_speed = 1,
|
|
|
|
.show_host_port_id = 1,
|
2007-08-28 07:31:09 +00:00
|
|
|
.disable_target_scan = 1,
|
2005-04-16 22:20:36 +00:00
|
|
|
};
|
|
|
|
|
2008-07-02 08:56:36 +00:00
|
|
|
struct zfcp_data zfcp_data = {
|
|
|
|
.scsi_host_template = {
|
|
|
|
.name = "zfcp",
|
|
|
|
.module = THIS_MODULE,
|
|
|
|
.proc_name = "zfcp",
|
|
|
|
.slave_alloc = zfcp_scsi_slave_alloc,
|
|
|
|
.slave_configure = zfcp_scsi_slave_configure,
|
|
|
|
.slave_destroy = zfcp_scsi_slave_destroy,
|
|
|
|
.queuecommand = zfcp_scsi_queuecommand,
|
|
|
|
.eh_abort_handler = zfcp_scsi_eh_abort_handler,
|
|
|
|
.eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
|
|
|
|
.eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
|
|
|
|
.eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
|
|
|
|
.can_queue = 4096,
|
|
|
|
.this_id = -1,
|
|
|
|
.sg_tablesize = ZFCP_MAX_SBALES_PER_REQ,
|
|
|
|
.cmd_per_lun = 1,
|
|
|
|
.use_clustering = 1,
|
|
|
|
.sdev_attrs = zfcp_sysfs_sdev_attrs,
|
|
|
|
.max_sectors = (ZFCP_MAX_SBALES_PER_REQ * 8),
|
2008-07-02 08:56:38 +00:00
|
|
|
.shost_attrs = zfcp_sysfs_shost_attrs,
|
2008-07-02 08:56:36 +00:00
|
|
|
},
|
|
|
|
};
|