[SCSI] aacraid: add user initiated reset
Add the ability for an application to issue a hardware reset to the adapter via sysfs. Typical uses include restarting the adapter after it has been flashed. Bumped revision number for the driver and added a feature to periodically check the adapter's health (check_interval), update the adapter's concept of time (update_interval) and block checking/resetting of the adapter (check_reset). Signed-off-by: Mark Salyzyn <aacraid@adaptec.com> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Salyzyn, Mark
James Bottomley
Родитель
1a655040c2
Коммит
29c976844d
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@ -169,6 +169,18 @@ int acbsize = -1;
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module_param(acbsize, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(acbsize, "Request a specific adapter control block (FIB) size. Valid values are 512, 2048, 4096 and 8192. Default is to use suggestion from Firmware.");
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int update_interval = 30 * 60;
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module_param(update_interval, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(update_interval, "Interval in seconds between time sync updates issued to adapter.");
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int check_interval = 24 * 60 * 60;
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module_param(check_interval, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(check_interval, "Interval in seconds between adapter health checks.");
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int check_reset = 1;
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module_param(check_reset, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(check_reset, "If adapter fails health check, reset the adapter.");
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int expose_physicals = -1;
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module_param(expose_physicals, int, S_IRUGO|S_IWUSR);
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MODULE_PARM_DESC(expose_physicals, "Expose physical components of the arrays. -1=protect 0=off, 1=on");
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@ -1197,6 +1209,12 @@ int aac_get_adapter_info(struct aac_dev* dev)
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(int)sizeof(dev->supplement_adapter_info.VpdInfo.Tsid),
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dev->supplement_adapter_info.VpdInfo.Tsid);
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}
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if (!check_reset ||
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(dev->supplement_adapter_info.SupportedOptions2 &
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le32_to_cpu(AAC_OPTION_IGNORE_RESET))) {
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printk(KERN_INFO "%s%d: Reset Adapter Ignored\n",
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dev->name, dev->id);
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}
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}
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dev->nondasd_support = 0;
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@ -12,8 +12,8 @@
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*----------------------------------------------------------------------------*/
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#ifndef AAC_DRIVER_BUILD
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# define AAC_DRIVER_BUILD 2437
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# define AAC_DRIVER_BRANCH "-mh4"
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# define AAC_DRIVER_BUILD 2447
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# define AAC_DRIVER_BRANCH "-ms"
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#endif
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#define MAXIMUM_NUM_CONTAINERS 32
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@ -860,10 +860,12 @@ struct aac_supplement_adapter_info
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__le32 FlashFirmwareBootBuild;
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u8 MfgPcbaSerialNo[12];
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u8 MfgWWNName[8];
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__le32 MoreFeatureBits;
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__le32 SupportedOptions2;
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__le32 ReservedGrowth[1];
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};
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#define AAC_FEATURE_FALCON 0x00000010
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#define AAC_OPTION_MU_RESET 0x00000001
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#define AAC_OPTION_IGNORE_RESET 0x00000002
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#define AAC_SIS_VERSION_V3 3
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#define AAC_SIS_SLOT_UNKNOWN 0xFF
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@ -1260,6 +1262,19 @@ struct aac_synchronize_reply {
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u8 data[16];
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};
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#define CT_PAUSE_IO 65
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#define CT_RELEASE_IO 66
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struct aac_pause {
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__le32 command; /* VM_ContainerConfig */
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__le32 type; /* CT_PAUSE_IO */
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__le32 timeout; /* 10ms ticks */
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__le32 min;
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__le32 noRescan;
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__le32 parm3;
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__le32 parm4;
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__le32 count; /* sizeof(((struct aac_pause_reply *)NULL)->data) */
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};
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struct aac_srb
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{
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__le32 function;
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@ -1816,6 +1831,7 @@ int aac_queue_get(struct aac_dev * dev, u32 * index, u32 qid, struct hw_fib * hw
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unsigned int aac_response_normal(struct aac_queue * q);
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unsigned int aac_command_normal(struct aac_queue * q);
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unsigned int aac_intr_normal(struct aac_dev * dev, u32 Index);
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int aac_reset_adapter(struct aac_dev * dev, int forced);
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int aac_check_health(struct aac_dev * dev);
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int aac_command_thread(void *data);
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int aac_close_fib_context(struct aac_dev * dev, struct aac_fib_context *fibctx);
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@ -1835,3 +1851,6 @@ extern int aif_timeout;
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extern int expose_physicals;
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extern int aac_reset_devices;
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extern int aac_commit;
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extern int update_interval;
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extern int check_interval;
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extern int check_reset;
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@ -1021,7 +1021,7 @@ static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
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}
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static int _aac_reset_adapter(struct aac_dev *aac)
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static int _aac_reset_adapter(struct aac_dev *aac, int forced)
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{
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int index, quirks;
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int retval;
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@ -1029,25 +1029,32 @@ static int _aac_reset_adapter(struct aac_dev *aac)
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struct scsi_device *dev;
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struct scsi_cmnd *command;
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struct scsi_cmnd *command_list;
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int jafo = 0;
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/*
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* Assumptions:
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* - host is locked.
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* - host is locked, unless called by the aacraid thread.
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* (a matter of convenience, due to legacy issues surrounding
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* eh_host_adapter_reset).
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* - in_reset is asserted, so no new i/o is getting to the
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* card.
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* - The card is dead.
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* - The card is dead, or will be very shortly ;-/ so no new
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* commands are completing in the interrupt service.
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*/
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host = aac->scsi_host_ptr;
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scsi_block_requests(host);
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aac_adapter_disable_int(aac);
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spin_unlock_irq(host->host_lock);
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kthread_stop(aac->thread);
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if (aac->thread->pid != current->pid) {
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spin_unlock_irq(host->host_lock);
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kthread_stop(aac->thread);
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jafo = 1;
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}
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/*
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* If a positive health, means in a known DEAD PANIC
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* state and the adapter could be reset to `try again'.
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*/
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retval = aac_adapter_restart(aac, aac_adapter_check_health(aac));
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retval = aac_adapter_restart(aac, forced ? 0 : aac_adapter_check_health(aac));
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if (retval)
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goto out;
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@ -1104,10 +1111,12 @@ static int _aac_reset_adapter(struct aac_dev *aac)
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if (aac_get_driver_ident(index)->quirks & AAC_QUIRK_31BIT)
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if ((retval = pci_set_dma_mask(aac->pdev, DMA_32BIT_MASK)))
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goto out;
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aac->thread = kthread_run(aac_command_thread, aac, aac->name);
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if (IS_ERR(aac->thread)) {
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retval = PTR_ERR(aac->thread);
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goto out;
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if (jafo) {
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aac->thread = kthread_run(aac_command_thread, aac, aac->name);
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if (IS_ERR(aac->thread)) {
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retval = PTR_ERR(aac->thread);
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goto out;
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}
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}
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(void)aac_get_adapter_info(aac);
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quirks = aac_get_driver_ident(index)->quirks;
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@ -1150,7 +1159,98 @@ static int _aac_reset_adapter(struct aac_dev *aac)
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out:
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aac->in_reset = 0;
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scsi_unblock_requests(host);
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spin_lock_irq(host->host_lock);
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if (jafo) {
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spin_lock_irq(host->host_lock);
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}
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return retval;
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}
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int aac_reset_adapter(struct aac_dev * aac, int forced)
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{
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unsigned long flagv = 0;
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int retval;
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struct Scsi_Host * host;
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if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0)
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return -EBUSY;
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if (aac->in_reset) {
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spin_unlock_irqrestore(&aac->fib_lock, flagv);
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return -EBUSY;
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}
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aac->in_reset = 1;
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spin_unlock_irqrestore(&aac->fib_lock, flagv);
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/*
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* Wait for all commands to complete to this specific
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* target (block maximum 60 seconds). Although not necessary,
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* it does make us a good storage citizen.
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*/
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host = aac->scsi_host_ptr;
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scsi_block_requests(host);
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if (forced < 2) for (retval = 60; retval; --retval) {
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struct scsi_device * dev;
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struct scsi_cmnd * command;
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int active = 0;
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__shost_for_each_device(dev, host) {
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spin_lock_irqsave(&dev->list_lock, flagv);
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list_for_each_entry(command, &dev->cmd_list, list) {
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if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
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active++;
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break;
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}
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}
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spin_unlock_irqrestore(&dev->list_lock, flagv);
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if (active)
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break;
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}
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/*
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* We can exit If all the commands are complete
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*/
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if (active == 0)
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break;
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ssleep(1);
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}
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/* Quiesce build, flush cache, write through mode */
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aac_send_shutdown(aac);
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spin_lock_irqsave(host->host_lock, flagv);
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retval = _aac_reset_adapter(aac, forced);
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spin_unlock_irqrestore(host->host_lock, flagv);
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if (retval == -ENODEV) {
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/* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */
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struct fib * fibctx = aac_fib_alloc(aac);
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if (fibctx) {
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struct aac_pause *cmd;
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int status;
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aac_fib_init(fibctx);
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cmd = (struct aac_pause *) fib_data(fibctx);
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cmd->command = cpu_to_le32(VM_ContainerConfig);
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cmd->type = cpu_to_le32(CT_PAUSE_IO);
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cmd->timeout = cpu_to_le32(1);
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cmd->min = cpu_to_le32(1);
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cmd->noRescan = cpu_to_le32(1);
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cmd->count = cpu_to_le32(0);
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status = aac_fib_send(ContainerCommand,
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fibctx,
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sizeof(struct aac_pause),
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FsaNormal,
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-2 /* Timeout silently */, 1,
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NULL, NULL);
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if (status >= 0)
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aac_fib_complete(fibctx);
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aac_fib_free(fibctx);
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}
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}
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return retval;
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}
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@ -1270,10 +1370,15 @@ int aac_check_health(struct aac_dev * aac)
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printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED);
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if (!check_reset || (aac->supplement_adapter_info.SupportedOptions2 &
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le32_to_cpu(AAC_OPTION_IGNORE_RESET)))
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goto out;
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host = aac->scsi_host_ptr;
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spin_lock_irqsave(host->host_lock, flagv);
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BlinkLED = _aac_reset_adapter(aac);
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spin_unlock_irqrestore(host->host_lock, flagv);
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if (aac->thread->pid != current->pid)
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spin_lock_irqsave(host->host_lock, flagv);
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BlinkLED = _aac_reset_adapter(aac, 0);
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if (aac->thread->pid != current->pid)
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spin_unlock_irqrestore(host->host_lock, flagv);
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return BlinkLED;
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out:
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@ -1300,6 +1405,9 @@ int aac_command_thread(void *data)
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struct aac_fib_context *fibctx;
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unsigned long flags;
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DECLARE_WAITQUEUE(wait, current);
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unsigned long next_jiffies = jiffies + HZ;
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unsigned long next_check_jiffies = next_jiffies;
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long difference = HZ;
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/*
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* We can only have one thread per adapter for AIF's.
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@ -1368,7 +1476,7 @@ int aac_command_thread(void *data)
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cpu_to_le32(AifCmdJobProgress))) {
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aac_handle_aif(dev, fib);
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}
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time_now = jiffies/HZ;
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/*
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@ -1507,11 +1615,79 @@ int aac_command_thread(void *data)
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* There are no more AIF's
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*/
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spin_unlock_irqrestore(dev->queues->queue[HostNormCmdQueue].lock, flags);
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schedule();
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/*
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* Background activity
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*/
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if ((time_before(next_check_jiffies,next_jiffies))
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&& ((difference = next_check_jiffies - jiffies) <= 0)) {
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next_check_jiffies = next_jiffies;
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if (aac_check_health(dev) == 0) {
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difference = ((long)(unsigned)check_interval)
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* HZ;
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next_check_jiffies = jiffies + difference;
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} else if (!dev->queues)
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break;
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}
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if (!time_before(next_check_jiffies,next_jiffies)
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&& ((difference = next_jiffies - jiffies) <= 0)) {
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struct timeval now;
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int ret;
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/* Don't even try to talk to adapter if its sick */
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ret = aac_check_health(dev);
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if (!ret && !dev->queues)
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break;
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next_check_jiffies = jiffies
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+ ((long)(unsigned)check_interval)
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* HZ;
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do_gettimeofday(&now);
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/* Synchronize our watches */
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if (((1000000 - (1000000 / HZ)) > now.tv_usec)
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&& (now.tv_usec > (1000000 / HZ)))
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difference = (((1000000 - now.tv_usec) * HZ)
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+ 500000) / 1000000;
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else if (ret == 0) {
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struct fib *fibptr;
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if ((fibptr = aac_fib_alloc(dev))) {
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u32 * info;
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aac_fib_init(fibptr);
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info = (u32 *) fib_data(fibptr);
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if (now.tv_usec > 500000)
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++now.tv_sec;
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*info = cpu_to_le32(now.tv_sec);
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(void)aac_fib_send(SendHostTime,
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fibptr,
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sizeof(*info),
|
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FsaNormal,
|
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1, 1,
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NULL,
|
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NULL);
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aac_fib_complete(fibptr);
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aac_fib_free(fibptr);
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}
|
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difference = (long)(unsigned)update_interval*HZ;
|
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} else {
|
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/* retry shortly */
|
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difference = 10 * HZ;
|
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}
|
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next_jiffies = jiffies + difference;
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if (time_before(next_check_jiffies,next_jiffies))
|
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difference = next_check_jiffies - jiffies;
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}
|
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if (difference <= 0)
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difference = 1;
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set_current_state(TASK_INTERRUPTIBLE);
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schedule_timeout(difference);
|
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|
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if (kthread_should_stop())
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break;
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set_current_state(TASK_INTERRUPTIBLE);
|
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}
|
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if (dev->queues)
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remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
|
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|
|
|
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|
|
@ -39,10 +39,8 @@
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#include <linux/pci.h>
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#include <linux/slab.h>
|
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#include <linux/spinlock.h>
|
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#include <linux/dma-mapping.h>
|
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#include <linux/syscalls.h>
|
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#include <linux/delay.h>
|
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#include <linux/smp_lock.h>
|
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#include <linux/kthread.h>
|
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#include <asm/semaphore.h>
|
||||
|
||||
|
|
@ -581,6 +579,14 @@ static int aac_eh_reset(struct scsi_cmnd* cmd)
|
|||
ssleep(1);
|
||||
}
|
||||
printk(KERN_ERR "%s: SCSI bus appears hung\n", AAC_DRIVERNAME);
|
||||
/*
|
||||
* This adapter needs a blind reset, only do so for Adapters that
|
||||
* support a register, instead of a commanded, reset.
|
||||
*/
|
||||
if ((aac->supplement_adapter_info.SupportedOptions2 &
|
||||
le32_to_cpu(AAC_OPTION_MU_RESET|AAC_OPTION_IGNORE_RESET)) ==
|
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le32_to_cpu(AAC_OPTION_MU_RESET))
|
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aac_reset_adapter(aac, 2); /* Bypass wait for command quiesce */
|
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return SUCCESS; /* Cause an immediate retry of the command with a ten second delay after successful tur */
|
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}
|
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|
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|
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@ -788,6 +794,31 @@ static ssize_t aac_show_max_id(struct class_device *class_dev, char *buf)
|
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class_to_shost(class_dev)->max_id);
|
||||
}
|
||||
|
||||
static ssize_t aac_store_reset_adapter(struct class_device *class_dev,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
int retval = -EACCES;
|
||||
|
||||
if (!capable(CAP_SYS_ADMIN))
|
||||
return retval;
|
||||
retval = aac_reset_adapter((struct aac_dev*)class_to_shost(class_dev)->hostdata, buf[0] == '!');
|
||||
if (retval >= 0)
|
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retval = count;
|
||||
return retval;
|
||||
}
|
||||
|
||||
static ssize_t aac_show_reset_adapter(struct class_device *class_dev,
|
||||
char *buf)
|
||||
{
|
||||
struct aac_dev *dev = (struct aac_dev*)class_to_shost(class_dev)->hostdata;
|
||||
int len, tmp;
|
||||
|
||||
tmp = aac_adapter_check_health(dev);
|
||||
if ((tmp == 0) && dev->in_reset)
|
||||
tmp = -EBUSY;
|
||||
len = snprintf(buf, PAGE_SIZE, "0x%x", tmp);
|
||||
return len;
|
||||
}
|
||||
|
||||
static struct class_device_attribute aac_model = {
|
||||
.attr = {
|
||||
|
|
@ -845,6 +876,14 @@ static struct class_device_attribute aac_max_id = {
|
|||
},
|
||||
.show = aac_show_max_id,
|
||||
};
|
||||
static struct class_device_attribute aac_reset = {
|
||||
.attr = {
|
||||
.name = "reset_host",
|
||||
.mode = S_IWUSR|S_IRUGO,
|
||||
},
|
||||
.store = aac_store_reset_adapter,
|
||||
.show = aac_show_reset_adapter,
|
||||
};
|
||||
|
||||
static struct class_device_attribute *aac_attrs[] = {
|
||||
&aac_model,
|
||||
|
|
@ -855,6 +894,7 @@ static struct class_device_attribute *aac_attrs[] = {
|
|||
&aac_serial_number,
|
||||
&aac_max_channel,
|
||||
&aac_max_id,
|
||||
&aac_reset,
|
||||
NULL
|
||||
};
|
||||
|
||||
|
|
@ -1118,7 +1158,7 @@ static int __init aac_init(void)
|
|||
{
|
||||
int error;
|
||||
|
||||
printk(KERN_INFO "Adaptec %s driver (%s)\n",
|
||||
printk(KERN_INFO "Adaptec %s driver %s\n",
|
||||
AAC_DRIVERNAME, aac_driver_version);
|
||||
|
||||
error = pci_register_driver(&aac_pci_driver);
|
||||
|
|
|
|||
|
|
@ -464,21 +464,24 @@ static int aac_rx_restart_adapter(struct aac_dev *dev, int bled)
|
|||
{
|
||||
u32 var;
|
||||
|
||||
if (bled)
|
||||
printk(KERN_ERR "%s%d: adapter kernel panic'd %x.\n",
|
||||
dev->name, dev->id, bled);
|
||||
else {
|
||||
bled = aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS,
|
||||
0, 0, 0, 0, 0, 0, &var, NULL, NULL, NULL, NULL);
|
||||
if (!bled && (var != 0x00000001))
|
||||
bled = -EINVAL;
|
||||
}
|
||||
if (bled && (bled != -ETIMEDOUT))
|
||||
bled = aac_adapter_sync_cmd(dev, IOP_RESET,
|
||||
0, 0, 0, 0, 0, 0, &var, NULL, NULL, NULL, NULL);
|
||||
if (!(dev->supplement_adapter_info.SupportedOptions2 &
|
||||
le32_to_cpu(AAC_OPTION_MU_RESET)) || (bled >= 0) || (bled == -2)) {
|
||||
if (bled)
|
||||
printk(KERN_ERR "%s%d: adapter kernel panic'd %x.\n",
|
||||
dev->name, dev->id, bled);
|
||||
else {
|
||||
bled = aac_adapter_sync_cmd(dev, IOP_RESET_ALWAYS,
|
||||
0, 0, 0, 0, 0, 0, &var, NULL, NULL, NULL, NULL);
|
||||
if (!bled && (var != 0x00000001))
|
||||
bled = -EINVAL;
|
||||
}
|
||||
if (bled && (bled != -ETIMEDOUT))
|
||||
bled = aac_adapter_sync_cmd(dev, IOP_RESET,
|
||||
0, 0, 0, 0, 0, 0, &var, NULL, NULL, NULL, NULL);
|
||||
|
||||
if (bled && (bled != -ETIMEDOUT))
|
||||
return -EINVAL;
|
||||
if (bled && (bled != -ETIMEDOUT))
|
||||
return -EINVAL;
|
||||
}
|
||||
if (bled || (var == 0x3803000F)) { /* USE_OTHER_METHOD */
|
||||
rx_writel(dev, MUnit.reserved2, 3);
|
||||
msleep(5000); /* Delay 5 seconds */
|
||||
|
|
@ -596,7 +599,7 @@ int _aac_rx_init(struct aac_dev *dev)
|
|||
}
|
||||
msleep(1);
|
||||
}
|
||||
if (restart)
|
||||
if (restart && aac_commit)
|
||||
aac_commit = 1;
|
||||
/*
|
||||
* Fill in the common function dispatch table.
|
||||
|
|
|
|||
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