#include <linux/completion.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
+#include <linux/kthread.h>
+#include <linux/interrupt.h>
+#include <scsi/scsi.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_device.h>
+#include <scsi/scsi_cmnd.h>
#include <asm/semaphore.h>
#include "aacraid.h"
static void fib_dealloc(struct fib * fibptr)
{
struct hw_fib *hw_fib = fibptr->hw_fib;
- if(hw_fib->header.StructType != FIB_MAGIC)
- BUG();
+ BUG_ON(hw_fib->header.StructType != FIB_MAGIC);
hw_fib->header.XferState = 0;
}
dprintk((KERN_DEBUG " hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa));
dprintk((KERN_DEBUG " fib being sent=%p\n",fibptr));
+ if (!dev->queues)
+ return -EBUSY;
q = &dev->queues->queue[AdapNormCmdQueue];
if(wait)
spin_lock_irqsave(q->lock, qflags);
if (dev->new_comm_interface) {
unsigned long count = 10000000L; /* 50 seconds */
- list_add_tail(&fibptr->queue, &q->pendingq);
q->numpending++;
spin_unlock_irqrestore(q->lock, qflags);
while (aac_adapter_send(fibptr) != 0) {
spin_unlock_irqrestore(&fibptr->event_lock, flags);
spin_lock_irqsave(q->lock, qflags);
q->numpending--;
- list_del(&fibptr->queue);
spin_unlock_irqrestore(q->lock, qflags);
return -ETIMEDOUT;
}
unsigned long nointr = 0;
aac_queue_get( dev, &index, AdapNormCmdQueue, hw_fib, 1, fibptr, &nointr);
- list_add_tail(&fibptr->queue, &q->pendingq);
q->numpending++;
*(q->headers.producer) = cpu_to_le32(index + 1);
spin_unlock_irqrestore(q->lock, qflags);
*/
unsigned long count = 36000000L; /* 3 minutes */
while (down_trylock(&fibptr->event_wait)) {
+ int blink;
if (--count == 0) {
spin_lock_irqsave(q->lock, qflags);
q->numpending--;
- list_del(&fibptr->queue);
spin_unlock_irqrestore(q->lock, qflags);
if (wait == -1) {
printk(KERN_ERR "aacraid: aac_fib_send: first asynchronous command timed out.\n"
}
return -ETIMEDOUT;
}
+ if ((blink = aac_adapter_check_health(dev)) > 0) {
+ if (wait == -1) {
+ printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n"
+ "Usually a result of a serious unrecoverable hardware problem\n",
+ blink);
+ }
+ return -EFAULT;
+ }
udelay(5);
}
- } else
- down(&fibptr->event_wait);
- if(fibptr->done == 0)
- BUG();
+ } else if (down_interruptible(&fibptr->event_wait)) {
+ spin_lock_irqsave(&fibptr->event_lock, flags);
+ if (fibptr->done == 0) {
+ fibptr->done = 2; /* Tell interrupt we aborted */
+ spin_unlock_irqrestore(&fibptr->event_lock, flags);
+ return -EINTR;
+ }
+ spin_unlock_irqrestore(&fibptr->event_lock, flags);
+ }
+ BUG_ON(fibptr->done == 0);
if((fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT)){
return -ETIMEDOUT;
if (cp[length] != 0)
cp[length] = 0;
if (level == LOG_AAC_HIGH_ERROR)
- printk(KERN_WARNING "aacraid:%s", cp);
+ printk(KERN_WARNING "%s:%s", dev->name, cp);
else
- printk(KERN_INFO "aacraid:%s", cp);
+ printk(KERN_INFO "%s:%s", dev->name, cp);
}
memset(cp, 0, 256);
}
* dispatches it to the appropriate routine for handling.
*/
+#define AIF_SNIFF_TIMEOUT (30*HZ)
static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
{
struct hw_fib * hw_fib = fibptr->hw_fib;
/* Sniff for container changes */
- if (!dev)
+ if (!dev || !dev->fsa_dev)
return;
container = (u32)-1;
if (device) {
dev->fsa_dev[container].config_needed = CHANGE;
dev->fsa_dev[container].config_waiting_on = AifEnConfigChange;
+ dev->fsa_dev[container].config_waiting_stamp = jiffies;
scsi_device_put(device);
}
}
if (container != (u32)-1) {
if (container >= dev->maximum_num_containers)
break;
- if (dev->fsa_dev[container].config_waiting_on ==
- le32_to_cpu(*(u32 *)aifcmd->data))
+ if ((dev->fsa_dev[container].config_waiting_on ==
+ le32_to_cpu(*(u32 *)aifcmd->data)) &&
+ time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
dev->fsa_dev[container].config_waiting_on = 0;
} else for (container = 0;
container < dev->maximum_num_containers; ++container) {
- if (dev->fsa_dev[container].config_waiting_on ==
- le32_to_cpu(*(u32 *)aifcmd->data))
+ if ((dev->fsa_dev[container].config_waiting_on ==
+ le32_to_cpu(*(u32 *)aifcmd->data)) &&
+ time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
dev->fsa_dev[container].config_waiting_on = 0;
}
break;
dev->fsa_dev[container].config_needed = ADD;
dev->fsa_dev[container].config_waiting_on =
AifEnConfigChange;
+ dev->fsa_dev[container].config_waiting_stamp = jiffies;
break;
/*
dev->fsa_dev[container].config_needed = DELETE;
dev->fsa_dev[container].config_waiting_on =
AifEnConfigChange;
+ dev->fsa_dev[container].config_waiting_stamp = jiffies;
break;
/*
container = le32_to_cpu(((u32 *)aifcmd->data)[1]);
if (container >= dev->maximum_num_containers)
break;
- if (dev->fsa_dev[container].config_waiting_on)
+ if (dev->fsa_dev[container].config_waiting_on &&
+ time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
break;
dev->fsa_dev[container].config_needed = CHANGE;
dev->fsa_dev[container].config_waiting_on =
AifEnConfigChange;
+ dev->fsa_dev[container].config_waiting_stamp = jiffies;
break;
case AifEnConfigChange:
if (container != (u32)-1) {
if (container >= dev->maximum_num_containers)
break;
- if (dev->fsa_dev[container].config_waiting_on ==
- le32_to_cpu(*(u32 *)aifcmd->data))
+ if ((dev->fsa_dev[container].config_waiting_on ==
+ le32_to_cpu(*(u32 *)aifcmd->data)) &&
+ time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
dev->fsa_dev[container].config_waiting_on = 0;
} else for (container = 0;
container < dev->maximum_num_containers; ++container) {
- if (dev->fsa_dev[container].config_waiting_on ==
- le32_to_cpu(*(u32 *)aifcmd->data))
+ if ((dev->fsa_dev[container].config_waiting_on ==
+ le32_to_cpu(*(u32 *)aifcmd->data)) &&
+ time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
dev->fsa_dev[container].config_waiting_on = 0;
}
break;
dev->fsa_dev[container].config_waiting_on =
AifEnContainerChange;
dev->fsa_dev[container].config_needed = ADD;
+ dev->fsa_dev[container].config_waiting_stamp =
+ jiffies;
}
}
if ((((u32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero))
dev->fsa_dev[container].config_waiting_on =
AifEnContainerChange;
dev->fsa_dev[container].config_needed = DELETE;
+ dev->fsa_dev[container].config_waiting_stamp =
+ jiffies;
}
}
break;
device_config_needed = NOTHING;
for (container = 0; container < dev->maximum_num_containers;
++container) {
- if ((dev->fsa_dev[container].config_waiting_on == 0)
- && (dev->fsa_dev[container].config_needed != NOTHING)) {
+ if ((dev->fsa_dev[container].config_waiting_on == 0) &&
+ (dev->fsa_dev[container].config_needed != NOTHING) &&
+ time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) {
device_config_needed =
dev->fsa_dev[container].config_needed;
dev->fsa_dev[container].config_needed = NOTHING;
if (device) {
switch (device_config_needed) {
case DELETE:
- scsi_remove_device(device);
- break;
case CHANGE:
- if (!dev->fsa_dev[container].valid) {
- scsi_remove_device(device);
- break;
- }
scsi_rescan_device(&device->sdev_gendev);
default:
}
+static int _aac_reset_adapter(struct aac_dev *aac)
+{
+ int index, quirks;
+ u32 ret;
+ int retval;
+ struct Scsi_Host *host;
+ struct scsi_device *dev;
+ struct scsi_cmnd *command;
+ struct scsi_cmnd *command_list;
+
+ /*
+ * Assumptions:
+ * - host is locked.
+ * - in_reset is asserted, so no new i/o is getting to the
+ * card.
+ * - The card is dead.
+ */
+ host = aac->scsi_host_ptr;
+ scsi_block_requests(host);
+ aac_adapter_disable_int(aac);
+ spin_unlock_irq(host->host_lock);
+ kthread_stop(aac->thread);
+
+ /*
+ * If a positive health, means in a known DEAD PANIC
+ * state and the adapter could be reset to `try again'.
+ */
+ retval = aac_adapter_check_health(aac);
+ if (retval == 0)
+ retval = aac_adapter_sync_cmd(aac, IOP_RESET_ALWAYS,
+ 0, 0, 0, 0, 0, 0, &ret, NULL, NULL, NULL, NULL);
+ if (retval)
+ retval = aac_adapter_sync_cmd(aac, IOP_RESET,
+ 0, 0, 0, 0, 0, 0, &ret, NULL, NULL, NULL, NULL);
+
+ if (retval)
+ goto out;
+ if (ret != 0x00000001) {
+ retval = -ENODEV;
+ goto out;
+ }
+
+ /*
+ * Loop through the fibs, close the synchronous FIBS
+ */
+ for (index = 0; index < (aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); index++) {
+ struct fib *fib = &aac->fibs[index];
+ if (!(fib->hw_fib->header.XferState & cpu_to_le32(NoResponseExpected | Async)) &&
+ (fib->hw_fib->header.XferState & cpu_to_le32(ResponseExpected))) {
+ unsigned long flagv;
+ spin_lock_irqsave(&fib->event_lock, flagv);
+ up(&fib->event_wait);
+ spin_unlock_irqrestore(&fib->event_lock, flagv);
+ schedule();
+ }
+ }
+ index = aac->cardtype;
+
+ /*
+ * Re-initialize the adapter, first free resources, then carefully
+ * apply the initialization sequence to come back again. Only risk
+ * is a change in Firmware dropping cache, it is assumed the caller
+ * will ensure that i/o is queisced and the card is flushed in that
+ * case.
+ */
+ aac_fib_map_free(aac);
+ aac->hw_fib_va = NULL;
+ aac->hw_fib_pa = 0;
+ pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr, aac->comm_phys);
+ aac->comm_addr = NULL;
+ aac->comm_phys = 0;
+ kfree(aac->queues);
+ aac->queues = NULL;
+ free_irq(aac->pdev->irq, aac);
+ kfree(aac->fsa_dev);
+ aac->fsa_dev = NULL;
+ if (aac_get_driver_ident(index)->quirks & AAC_QUIRK_31BIT) {
+ if (((retval = pci_set_dma_mask(aac->pdev, DMA_32BIT_MASK))) ||
+ ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_32BIT_MASK))))
+ goto out;
+ } else {
+ if (((retval = pci_set_dma_mask(aac->pdev, 0x7FFFFFFFULL))) ||
+ ((retval = pci_set_consistent_dma_mask(aac->pdev, 0x7FFFFFFFULL))))
+ goto out;
+ }
+ if ((retval = (*(aac_get_driver_ident(index)->init))(aac)))
+ goto out;
+ if (aac_get_driver_ident(index)->quirks & AAC_QUIRK_31BIT)
+ if ((retval = pci_set_dma_mask(aac->pdev, DMA_32BIT_MASK)))
+ goto out;
+ aac->thread = kthread_run(aac_command_thread, aac, aac->name);
+ if (IS_ERR(aac->thread)) {
+ retval = PTR_ERR(aac->thread);
+ goto out;
+ }
+ (void)aac_get_adapter_info(aac);
+ quirks = aac_get_driver_ident(index)->quirks;
+ if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) {
+ host->sg_tablesize = 34;
+ host->max_sectors = (host->sg_tablesize * 8) + 112;
+ }
+ if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) {
+ host->sg_tablesize = 17;
+ host->max_sectors = (host->sg_tablesize * 8) + 112;
+ }
+ aac_get_config_status(aac, 1);
+ aac_get_containers(aac);
+ /*
+ * This is where the assumption that the Adapter is quiesced
+ * is important.
+ */
+ command_list = NULL;
+ __shost_for_each_device(dev, host) {
+ unsigned long flags;
+ spin_lock_irqsave(&dev->list_lock, flags);
+ list_for_each_entry(command, &dev->cmd_list, list)
+ if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
+ command->SCp.buffer = (struct scatterlist *)command_list;
+ command_list = command;
+ }
+ spin_unlock_irqrestore(&dev->list_lock, flags);
+ }
+ while ((command = command_list)) {
+ command_list = (struct scsi_cmnd *)command->SCp.buffer;
+ command->SCp.buffer = NULL;
+ command->result = DID_OK << 16
+ | COMMAND_COMPLETE << 8
+ | SAM_STAT_TASK_SET_FULL;
+ command->SCp.phase = AAC_OWNER_ERROR_HANDLER;
+ command->scsi_done(command);
+ }
+ retval = 0;
+
+out:
+ aac->in_reset = 0;
+ scsi_unblock_requests(host);
+ spin_lock_irq(host->host_lock);
+ return retval;
+}
+
+int aac_check_health(struct aac_dev * aac)
+{
+ int BlinkLED;
+ unsigned long time_now, flagv = 0;
+ struct list_head * entry;
+ struct Scsi_Host * host;
+
+ /* Extending the scope of fib_lock slightly to protect aac->in_reset */
+ if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0)
+ return 0;
+
+ if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) {
+ spin_unlock_irqrestore(&aac->fib_lock, flagv);
+ return 0; /* OK */
+ }
+
+ aac->in_reset = 1;
+
+ /* Fake up an AIF:
+ * aac_aifcmd.command = AifCmdEventNotify = 1
+ * aac_aifcmd.seqnum = 0xFFFFFFFF
+ * aac_aifcmd.data[0] = AifEnExpEvent = 23
+ * aac_aifcmd.data[1] = AifExeFirmwarePanic = 3
+ * aac.aifcmd.data[2] = AifHighPriority = 3
+ * aac.aifcmd.data[3] = BlinkLED
+ */
+
+ time_now = jiffies/HZ;
+ entry = aac->fib_list.next;
+
+ /*
+ * For each Context that is on the
+ * fibctxList, make a copy of the
+ * fib, and then set the event to wake up the
+ * thread that is waiting for it.
+ */
+ while (entry != &aac->fib_list) {
+ /*
+ * Extract the fibctx
+ */
+ struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next);
+ struct hw_fib * hw_fib;
+ struct fib * fib;
+ /*
+ * Check if the queue is getting
+ * backlogged
+ */
+ if (fibctx->count > 20) {
+ /*
+ * It's *not* jiffies folks,
+ * but jiffies / HZ, so do not
+ * panic ...
+ */
+ u32 time_last = fibctx->jiffies;
+ /*
+ * Has it been > 2 minutes
+ * since the last read off
+ * the queue?
+ */
+ if ((time_now - time_last) > aif_timeout) {
+ entry = entry->next;
+ aac_close_fib_context(aac, fibctx);
+ continue;
+ }
+ }
+ /*
+ * Warning: no sleep allowed while
+ * holding spinlock
+ */
+ hw_fib = kmalloc(sizeof(struct hw_fib), GFP_ATOMIC);
+ fib = kmalloc(sizeof(struct fib), GFP_ATOMIC);
+ if (fib && hw_fib) {
+ struct aac_aifcmd * aif;
+
+ memset(hw_fib, 0, sizeof(struct hw_fib));
+ memset(fib, 0, sizeof(struct fib));
+ fib->hw_fib = hw_fib;
+ fib->dev = aac;
+ aac_fib_init(fib);
+ fib->type = FSAFS_NTC_FIB_CONTEXT;
+ fib->size = sizeof (struct fib);
+ fib->data = hw_fib->data;
+ aif = (struct aac_aifcmd *)hw_fib->data;
+ aif->command = cpu_to_le32(AifCmdEventNotify);
+ aif->seqnum = cpu_to_le32(0xFFFFFFFF);
+ aif->data[0] = cpu_to_le32(AifEnExpEvent);
+ aif->data[1] = cpu_to_le32(AifExeFirmwarePanic);
+ aif->data[2] = cpu_to_le32(AifHighPriority);
+ aif->data[3] = cpu_to_le32(BlinkLED);
+
+ /*
+ * Put the FIB onto the
+ * fibctx's fibs
+ */
+ list_add_tail(&fib->fiblink, &fibctx->fib_list);
+ fibctx->count++;
+ /*
+ * Set the event to wake up the
+ * thread that will waiting.
+ */
+ up(&fibctx->wait_sem);
+ } else {
+ printk(KERN_WARNING "aifd: didn't allocate NewFib.\n");
+ kfree(fib);
+ kfree(hw_fib);
+ }
+ entry = entry->next;
+ }
+
+ spin_unlock_irqrestore(&aac->fib_lock, flagv);
+
+ if (BlinkLED < 0) {
+ printk(KERN_ERR "%s: Host adapter dead %d\n", aac->name, BlinkLED);
+ goto out;
+ }
+
+ printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED);
+
+ host = aac->scsi_host_ptr;
+ spin_lock_irqsave(host->host_lock, flagv);
+ BlinkLED = _aac_reset_adapter(aac);
+ spin_unlock_irqrestore(host->host_lock, flagv);
+ return BlinkLED;
+
+out:
+ aac->in_reset = 0;
+ return BlinkLED;
+}
+
+
/**
* aac_command_thread - command processing thread
* @dev: Adapter to monitor
* more FIBs.
*/
-int aac_command_thread(struct aac_dev * dev)
+int aac_command_thread(void *data)
{
+ struct aac_dev *dev = data;
struct hw_fib *hw_fib, *hw_newfib;
struct fib *fib, *newfib;
struct aac_fib_context *fibctx;
*/
if (dev->aif_thread)
return -EINVAL;
- /*
- * Set up the name that will appear in 'ps'
- * stored in task_struct.comm[16].
- */
- daemonize("aacraid");
- allow_signal(SIGKILL);
+
/*
* Let the DPC know it has a place to send the AIF's to.
*/
* since the last read off
* the queue?
*/
- if ((time_now - time_last) > 120) {
+ if ((time_now - time_last) > aif_timeout) {
entry = entry->next;
aac_close_fib_context(dev, fibctx);
continue;
spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags);
schedule();
- if(signal_pending(current))
+ if (kthread_should_stop())
break;
set_current_state(TASK_INTERRUPTIBLE);
}
if (dev->queues)
remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
dev->aif_thread = 0;
- complete_and_exit(&dev->aif_completion, 0);
return 0;
}
git://git.onelab.eu / linux-2.6.git / blobdiff