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Commit 21104aab authored by James Bottomley's avatar James Bottomley
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qla1280: convert the driver to the new SCSI error handler

parent ca88707b
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Showing with 184 additions and 348 deletions
drivers/scsi/qla1280.c
View file @ 21104aab
......@@ -1258,280 +1258,36 @@ qla1280_queuecommand(Scsi_Cmnd * cmd, void (*fn) (Scsi_Cmnd *))
return 0;
}
/**************************************************************************
* qla1200_abort
* Abort the speciifed SCSI command(s).
**************************************************************************/
int
qla1280_abort(Scsi_Cmnd * cmd)
typedef enum {
ABORT_COMMAND,
ABORT_DEVICE,
DEVICE_RESET,
BUS_RESET,
ADAPTER_RESET,
FAIL
} action_t;
/* timer action for error action processor */
static void qla1280_error_wait_timeout(unsigned long __data)
{
struct scsi_qla_host *ha;
srb_t *sp;
struct Scsi_Host *host;
unsigned int bus, target, lun;
scsi_lu_t *q;
int return_status = SCSI_ABORT_SUCCESS;
int found = 0;
int i;
unsigned char *handle;
u16 data;
ENTER("qla1280_abort");
ha = (struct scsi_qla_host *)cmd->device->host->hostdata;
host = cmd->device->host;
/* Get the SCSI request ptr */
sp = (srb_t *)CMD_SP(cmd);
handle = CMD_HANDLE(cmd);
if (qla1280_verbose)
printk(KERN_ERR "scsi(%li): ABORT Command=0x%p, handle=0x%p\n",
ha->host_no, (void *) cmd, (void *) handle);
/* Check for pending interrupts. */
if (handle == NULL) {
/* we never got this command */
printk(KERN_INFO "qla1280: Aborting a NULL handle\n");
return SCSI_ABORT_NOT_RUNNING; /* no action - we don't have command */
}
data = qla1280_debounce_register(&ha->iobase->istatus);
/*
* The io_request_lock is held when the reset handler is called, hence
* the interrupt handler cannot be running in parallel as it also
* grabs the lock. No reason to play funny games with set_bit() in
* order to test for interrupt handler entry as the driver used to
* do here.
* /Jes
*/
if (data & RISC_INT) {
/* put any pending command in done queue */
qla1280_isr(ha, &ha->done_q_first, &ha->done_q_last);
}
/*
* This seems unnecessary, it's not used below! / Jes
*/
#ifdef UNUSED
handle = CMD_HANDLE(cmd);
#endif
/* Generate LU queue on bus, target, LUN */
bus = SCSI_BUS_32(cmd);
target = SCSI_TCN_32(cmd);
lun = SCSI_LUN_32(cmd);
if ((q = LU_Q(ha, bus, target, lun)) == NULL) {
/* No lun queue -- command must not be active */
printk(KERN_WARNING "qla1280 (%d:%d:%d): No LUN queue for the "
"specified device\n", bus, target, lun);
return SCSI_ABORT_NOT_RUNNING; /* no action - we don't have command */
}
#if AUTO_ESCALATE_ABORT
if ((sp->flags & SRB_ABORTED)) {
dprintk(1, "qla1280_abort: Abort escalayted - returning "
"SCSI_ABORT_SNOOZE.\n");
return SCSI_ABORT_SNOOZE;
}
#endif
if ((sp->flags & SRB_ABORT_PENDING)) {
if (qla1280_verbose)
printk(KERN_WARNING
"scsi(): Command has a pending abort "
"message - ABORT_PENDING.\n");
return SCSI_ABORT_PENDING;
}
#if STOP_ON_ABORT
printk(KERN_WARNING "Scsi layer issued a ABORT command= 0x%p\n", cmd);
qla1280_print_scsi_cmd(2, cmd);
#endif
/*
* Normally, would would need to search our queue for the specified command
* but; since our sp contains the cmd ptr, we can just remove it from our
* LUN queue.
*/
if (!(sp->flags & SRB_SENT)) {
found++;
if (qla1280_verbose)
printk(KERN_WARNING
"scsi(): Command returned from queue "
"aborted.\n");
struct scsi_cmnd *cmd = (struct scsi_cmnd *)__data;
srb_t *sp = (srb_t *)CMD_SP(cmd);
/* Remove srb from SCSI LU queue. */
qla1280_removeq(q, sp);
sp->flags |= SRB_ABORTED;
CMD_RESULT(cmd) = DID_ABORT << 16;
qla1280_done_q_put(sp, &ha->done_q_first, &ha->done_q_last);
return_status = SCSI_ABORT_SUCCESS;
} else { /* find the command in our active list */
for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
if (sp == ha->outstanding_cmds[i]) {
found++;
dprintk(1,
"qla1280: RISC aborting command.\n");
qla1280_abort_command(ha, sp);
return_status = SCSI_ABORT_PENDING;
break;
}
}
}
#if STOP_ON_ABORT
qla1280_panic("qla1280_abort", ha->host);
#endif
if (found == 0)
return_status = SCSI_ABORT_NOT_RUNNING; /* no action - we don't have command */
dprintk(1, "qla1280_abort: Aborted status returned = 0x%x.\n",
return_status);
if (ha->done_q_first)
qla1280_done(ha, &ha->done_q_first, &ha->done_q_last);
if (found)
qla1280_restart_queues(ha);
LEAVE("qla1280_abort");
return return_status;
}
int
qla1280_new_abort(Scsi_Cmnd * cmd)
{
struct scsi_qla_host *ha;
srb_t *sp;
struct Scsi_Host *host;
int bus, target, lun;
scsi_lu_t *q;
unsigned long cpu_flags;
int return_status = SCSI_ABORT_SUCCESS;
int found = 0;
int i;
unsigned char *handle;
u16 data;
ENTER("qla1280_abort");
host = cmd->device->host;
ha = (struct scsi_qla_host *)host->hostdata;
/* Get the SCSI request ptr */
sp = (srb_t *) CMD_SP(cmd);
handle = CMD_HANDLE(cmd);
if (qla1280_verbose)
printk(KERN_ERR "scsi(%li): ABORT Command=0x%p, handle=0x%p\n",
ha->host_no, cmd, handle);
/* Check for pending interrupts. */
if (handle == NULL) {
/* we never got this command */
printk(KERN_INFO "qla1280: Aborting a NULL handle\n");
return SUCCESS; /* no action - we don't have command */
}
spin_lock_irqsave (ha->host->host_lock, cpu_flags);
data = qla1280_debounce_register(&ha->iobase->istatus);
/*
* We grab the host lock in the interrupt handler to
* prevent racing here.
*
* Then again, running the interrupt handler from here is somewhat
* questionable.
* /Jes
*/
if (data & RISC_INT) {
/* put any pending command in done queue */
qla1280_isr(ha, &ha->done_q_first, &ha->done_q_last);
}
/* Generate LU queue on bus, target, LUN */
bus = SCSI_BUS_32(cmd);
target = SCSI_TCN_32(cmd);
lun = SCSI_LUN_32(cmd);
if ((q = LU_Q(ha, bus, target, lun)) == NULL) {
/* No lun queue -- command must not be active */
printk(KERN_WARNING "qla1280 (%d:%d:%d): No LUN queue for the "
"specified device\n", bus, target, lun);
return_status = SUCCESS; /* no action - we don't have command */
goto out;
}
if ((sp->flags & SRB_ABORT_PENDING)) {
if (qla1280_verbose)
printk(KERN_WARNING
"scsi(): Command has a pending abort "
"message - ABORT_PENDING.\n");
return_status = SCSI_ABORT_PENDING;
goto out;
}
#if STOP_ON_ABORT
printk(KERN_WARNING "Scsi layer issued a ABORT command= 0x%p\n", cmd);
qla1280_print_scsi_cmd(2, cmd);
#endif
/*
* Normally, would would need to search our queue for the specified command
* but; since our sp contains the cmd ptr, we can just remove it from our
* LUN queue.
*/
if (!(sp->flags & SRB_SENT)) {
found++;
if (qla1280_verbose)
printk(KERN_WARNING
"scsi(): Command returned from queue "
"aborted.\n");
/* Remove srb from SCSI LU queue. */
qla1280_removeq(q, sp);
sp->flags |= SRB_ABORTED;
CMD_RESULT(cmd) = DID_ABORT << 16;
qla1280_done_q_put(sp, &ha->done_q_first, &ha->done_q_last);
return_status = SUCCESS;
} else { /* find the command in our active list */
for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
if (sp == ha->outstanding_cmds[i]) {
found++;
dprintk(1,
"qla1280: RISC aborting command.\n");
qla1280_abort_command(ha, sp);
return_status = SCSI_ABORT_PENDING;
break;
}
}
}
#if STOP_ON_ABORT
qla1280_panic("qla1280_abort", ha->host);
#endif
if (found == 0)
return_status = SUCCESS; /* no action - we don't have the command */
dprintk(1, "qla1280_abort: Aborted status returned = 0x%x.\n",
return_status);
if (ha->done_q_first)
qla1280_done(ha, &ha->done_q_first, &ha->done_q_last);
if (found)
qla1280_restart_queues(ha);
out:
spin_unlock_irqrestore(ha->host->host_lock, cpu_flags);
LEAVE("qla1280_abort");
return return_status;
complete(sp->wait);
}
/**************************************************************************
* qla1200_reset
* The reset function will reset the SCSI bus and abort any executing
* commands.
* qla1200_error_action
* The function will attempt to perform a specified error action and
* wait for the results (or time out).
*
* Input:
* cmd = Linux SCSI command packet of the command that cause the
* bus reset.
* flags = SCSI bus reset option flags (see scsi.h)
* action = error action to take (see action_t)
*
* Returns:
* DID_RESET in cmd.host_byte of aborted command(s)
* SUCCESS or FAIL
*
* Note:
* Resetting the bus always succeeds - is has to, otherwise the
......@@ -1540,36 +1296,34 @@ qla1280_new_abort(Scsi_Cmnd * cmd)
* the SCSI bus reset line.
**************************************************************************/
int
qla1280_reset(Scsi_Cmnd * cmd, unsigned int flags)
qla1280_error_action(Scsi_Cmnd * cmd, action_t action)
{
struct scsi_qla_host *ha;
int bus, target, lun;
srb_t *sp;
typedef enum {
ABORT_DEVICE = 1,
DEVICE_RESET = 2,
BUS_RESET = 3,
ADAPTER_RESET = 4,
RESET_DELAYED = 5,
FAIL = 6
} action_t;
action_t action = ADAPTER_RESET;
u16 data;
uint16_t data;
unsigned char *handle;
scsi_lu_t *q;
int result;
DECLARE_COMPLETION(wait);
struct timer_list timer;
ENTER("qla1280_reset");
ENTER("qla1280_error_action");
if (qla1280_verbose)
printk(KERN_INFO "scsi(): Resetting Cmnd=0x%p, Handle=0x%p, "
"flags=0x%x\n", cmd, CMD_HANDLE(cmd), flags);
"action=0x%x\n", cmd, CMD_HANDLE(cmd), action);
if (cmd == NULL) {
printk(KERN_WARNING
"(scsi?:?:?:?) Reset called with NULL Scsi_Cmnd "
"pointer, failing.\n");
return SCSI_RESET_SNOOZE;
LEAVE("qla1280_error_action");
return FAIL;
}
ha = (struct scsi_qla_host *)cmd->device->host->hostdata;
sp = (srb_t *)CMD_SP(cmd);
handle = CMD_HANDLE(cmd);
#if STOP_ON_RESET
qla1280_panic("qla1280_reset", ha->host);
......@@ -1589,27 +1343,14 @@ qla1280_reset(Scsi_Cmnd * cmd, unsigned int flags)
* Determine the suggested action that the mid-level driver wants
* us to perform.
*/
if (CMD_HANDLE(cmd) == NULL) {
/*
* if mid-level driver called reset with a orphan SCSI_Cmnd
* (i.e. a command that's not pending), so perform the
* function specified.
*/
if (flags & SCSI_RESET_SUGGEST_HOST_RESET)
action = ADAPTER_RESET;
else
action = BUS_RESET;
if (handle == NULL) {
if(action == ABORT_COMMAND) {
/* we never got this command */
printk(KERN_INFO "qla1280: Aborting a NULL handle\n");
return SUCCESS; /* no action - we don't have command */
}
} else {
/*
* Mid-level driver has called reset with this SCSI_Cmnd and
* its pending.
*/
if (flags & SCSI_RESET_SUGGEST_HOST_RESET)
action = ADAPTER_RESET;
else if (flags & SCSI_RESET_SUGGEST_BUS_RESET)
action = BUS_RESET;
else
action = DEVICE_RESET;
sp->wait = &wait;
}
bus = SCSI_BUS_32(cmd);
......@@ -1617,36 +1358,67 @@ qla1280_reset(Scsi_Cmnd * cmd, unsigned int flags)
lun = SCSI_LUN_32(cmd);
q = LU_Q(ha, bus, target, lun);
#if AUTO_ESCALATE_RESET
if ((action & DEVICE_RESET) && (q->q_flag & QLA1280_QRESET)) {
printk(KERN_INFO
"qla1280(%ld): Bus device reset already sent to "
"device, escalating.\n", ha->host_no);
action = BUS_RESET;
}
if ((action & DEVICE_RESET) && (sp->flags & SRB_ABORT_PENDING)) {
printk(KERN_INFO
"qla1280(%ld):Have already attempted to reach "
"device with abort device\n", ha->host_no);
printk(KERN_INFO "qla1280(%ld):message, will escalate to BUS "
"RESET.\n", ha->host_no);
action = BUS_RESET;
}
#endif
/*
* By this point, we want to already know what we are going to do,
* so we only need to perform the course of action.
*/
result = SCSI_RESET_ERROR;
/* Overloading result. Here it means the success or fail of the
* *issue* of the action. When we return from the routine, it must
* mean the actual success or fail of the action */
result = FAIL;
switch (action) {
case FAIL:
break;
case RESET_DELAYED:
result = SCSI_RESET_PENDING;
case ABORT_COMMAND:
if (q == NULL) {
/* No lun queue -- command must not be active */
printk(KERN_WARNING "qla1280 (%d:%d:%d): No LUN queue for the "
"specified device\n", bus, target, lun);
break;
}
if ((sp->flags & SRB_ABORT_PENDING)) {
printk(KERN_WARNING
"scsi(): Command has a pending abort "
"message - ABORT_PENDING.\n");
/* This should technically be impossible since we
* now wait for abort completion */
break;
}
/*
* Normally, would would need to search our queue for
* the specified command but; since our sp contains
* the cmd ptr, we can just remove it from our LUN
* queue.
*/
if (!(sp->flags & SRB_SENT)) {
if (qla1280_verbose)
printk(KERN_WARNING
"scsi(): Command returned from queue "
"aborted.\n");
/* Remove srb from SCSI LU queue. */
qla1280_removeq(q, sp);
sp->flags |= SRB_ABORTED;
CMD_RESULT(cmd) = DID_ABORT << 16;
qla1280_done_q_put(sp, &ha->done_q_first, &ha->done_q_last);
if (ha->done_q_first)
qla1280_done(ha, &ha->done_q_first, &ha->done_q_last);
qla1280_restart_queues(ha);
} else { /* find the command in our active list */
int i;
for (i = 1; i < MAX_OUTSTANDING_COMMANDS; i++) {
if (sp == ha->outstanding_cmds[i]) {
dprintk(1,
"qla1280: RISC aborting command.\n");
qla1280_abort_command(ha, sp);
}
}
}
break;
case ABORT_DEVICE:
ha->flags.in_reset = TRUE;
if (qla1280_verbose)
......@@ -1655,7 +1427,7 @@ qla1280_reset(Scsi_Cmnd * cmd, unsigned int flags)
"command.\n", ha->host_no, bus, target, lun);
qla1280_abort_queue_single(ha, bus, target, lun, DID_ABORT);
if (qla1280_abort_device(ha, bus, target, lun) == 0)
result = SCSI_RESET_PENDING;
result = SUCCESS;
break;
case DEVICE_RESET:
......@@ -1668,7 +1440,7 @@ qla1280_reset(Scsi_Cmnd * cmd, unsigned int flags)
qla1280_abort_queue_single(ha, bus, target, lun,
DID_ABORT);
if (qla1280_device_reset(ha, bus, target) == 0)
result = SCSI_RESET_PENDING;
result = SUCCESS;
q->q_flag |= QLA1280_QRESET;
break;
......@@ -1683,24 +1455,12 @@ qla1280_reset(Scsi_Cmnd * cmd, unsigned int flags)
qla1280_abort_queue_single(ha, bus, target,
lun, DID_RESET);
qla1280_bus_reset(ha, bus);
/*
* The bus reset routine returns all the outstanding commands
* back with "DID_RESET" in the status field after a short
* delay by the firmware. If the mid-level time out the SCSI
* reset before our delay we may need to ignore it.
*/
/* result = SCSI_RESET_PENDING | SCSI_RESET_BUS_RESET; */
result = SCSI_RESET_SUCCESS | SCSI_RESET_BUS_RESET;
/*
* Wheeeee!!!
*/
mdelay(4 * 1000);
barrier();
if (flags & SCSI_RESET_SYNCHRONOUS) {
CMD_RESULT(cmd) = DID_BUS_BUSY << 16;
(*(cmd)->scsi_done)(cmd);
}
/* ha->reset_start = jiffies; */
/* wait 4 seconds */
schedule_timeout(4*HZ);
result = SUCCESS;
break;
case ADAPTER_RESET:
......@@ -1720,7 +1480,7 @@ qla1280_reset(Scsi_Cmnd * cmd, unsigned int flags)
* mid-level code can expect completions momentitarily.
*/
if (qla1280_abort_isp(ha) == 0)
result = SCSI_RESET_SUCCESS | SCSI_RESET_HOST_RESET;
result = SUCCESS;
ha->flags.reset_active = FALSE;
}
......@@ -1730,12 +1490,80 @@ qla1280_reset(Scsi_Cmnd * cmd, unsigned int flags)
qla1280_restart_queues(ha);
ha->flags.in_reset = FALSE;
/* If we didn't manage to issue the action, or we have no
* command to wait for, exit here */
if(result == FAIL || handle == NULL)
goto leave;
/* set up a timer just in case we're really jammed */
init_timer(&timer);
timer.expires = jiffies + 4*HZ;
timer.data = (unsigned long)cmd;
timer.function = qla1280_error_wait_timeout;
add_timer(&timer);
/* wait for the action to complete (or the timer to expire) */
spin_unlock_irq(ha->host->host_lock);
wait_for_completion(&wait);
del_timer_sync(&timer);
spin_lock_irq(ha->host->host_lock);
sp->wait = NULL;
/* the only action we might get a fail for is abort */
if(action == ABORT_COMMAND) {
if(sp->flags & SRB_ABORTED)
result = SUCCESS;
else
result = FAILED;
}
leave:
dprintk(1, "RESET returning %d\n", result);
LEAVE("qla1280_reset");
LEAVE("qla1280_error_action");
return result;
}
/**************************************************************************
* qla1200_abort
* Abort the specified SCSI command(s).
**************************************************************************/
int
qla1280_eh_abort(struct scsi_cmnd * cmd)
{
return qla1280_error_action(cmd, ABORT_COMMAND);
}
/**************************************************************************
* qla1200_device_reset
* Reset the specified SCSI device
**************************************************************************/
int
qla1280_eh_device_reset(struct scsi_cmnd *cmd)
{
return qla1280_error_action(cmd, DEVICE_RESET);
}
/**************************************************************************
* qla1200_bus_reset
* Reset the specified bus.
**************************************************************************/
int
qla1280_eh_bus_reset(struct scsi_cmnd *cmd)
{
return qla1280_error_action(cmd, BUS_RESET);
}
/**************************************************************************
* qla1200_adapter_reset
* Reset the specified adapter (both channels)
**************************************************************************/
int
qla1280_eh_adapter_reset(struct scsi_cmnd *cmd)
{
return qla1280_error_action(cmd, ADAPTER_RESET);
}
/**************************************************************************
* qla1280_biosparam
* Return the disk geometry for the given SCSI device.
......@@ -1966,6 +1794,9 @@ qla1280_done(struct scsi_qla_host *ha, srb_t ** done_q_first,
(*(cmd)->scsi_done)(cmd);
if(sp->wait != NULL)
complete(sp->wait);
qla1280_next(ha, q, bus);
}
LEAVE("qla1280_done");
......@@ -4390,9 +4221,9 @@ qla1280_32bit_start_scsi(struct scsi_qla_host *ha, srb_t * sp)
}
} else { /* No data transfer at all */
dword_ptr = (uint32_t *)(pkt + 1);
*dword_ptr++ = 0;
*dword_ptr = 0;
//dword_ptr = (uint32_t *)(pkt + 1);
//*dword_ptr++ = 0;
//*dword_ptr = 0;
dprintk(5,
"qla1280_32bit_start_scsi: No data, command "
"packet data - \n");
......@@ -5972,8 +5803,10 @@ static Scsi_Host_Template driver_template = {
.release = qla1280_release,
.info = qla1280_info,
.queuecommand = qla1280_queuecommand,
.abort = qla1280_abort,
.reset = qla1280_reset,
.eh_abort_handler = qla1280_eh_abort,
.eh_device_reset_handler = qla1280_eh_device_reset,
.eh_bus_reset_handler = qla1280_eh_bus_reset,
.eh_host_reset_handler = qla1280_eh_adapter_reset,
.slave_configure = qla1280_slave_configure,
.bios_param = qla1280_biosparam,
.can_queue = 255,
......
drivers/scsi/qla1280.h
View file @ 21104aab
......@@ -158,6 +158,9 @@ typedef struct srb {
uint8_t dir; /* direction of transfer */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,18)
dma_addr_t saved_dma_handle; /* for unmap of single transfers */
/* NOTE: the sp->cmd will be NULL when this completion is
* called, so you should know the scsi_cmnd when using this */
struct completion *wait;
#endif
} srb_t;
......
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