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[SCSI] megaraid_sas: Fix the fix for fw hang caused by megaraid sas application
Add a lock to the skinny firmware initialisation sequence to prevent the two stage write being non atomic if multiple instances use it. Add a flag to the driver shutdown sequence to prevent aen ioctls being called after shutdown begins. Signed-off-by Bo Yang<bo.yang@lsi.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Yang, Bo
James Bottomley
parent
f4c9a1317d
commit
0c79e681ee
@ -226,7 +226,10 @@ megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
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* @regs : MFI register set
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*/
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static inline void
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megasas_fire_cmd_xscale(dma_addr_t frame_phys_addr,u32 frame_count, struct megasas_register_set __iomem *regs)
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megasas_fire_cmd_xscale(struct megasas_instance *instance,
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dma_addr_t frame_phys_addr,
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u32 frame_count,
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struct megasas_register_set __iomem *regs)
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{
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writel((frame_phys_addr >> 3)|(frame_count),
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&(regs)->inbound_queue_port);
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@ -323,7 +326,10 @@ megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
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* @regs : MFI register set
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*/
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static inline void
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megasas_fire_cmd_ppc(dma_addr_t frame_phys_addr, u32 frame_count, struct megasas_register_set __iomem *regs)
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megasas_fire_cmd_ppc(struct megasas_instance *instance,
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dma_addr_t frame_phys_addr,
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u32 frame_count,
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struct megasas_register_set __iomem *regs)
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{
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writel((frame_phys_addr | (frame_count<<1))|1,
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&(regs)->inbound_queue_port);
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@ -413,12 +419,17 @@ megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
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* @regs : MFI register set
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*/
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static inline void
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megasas_fire_cmd_skinny(dma_addr_t frame_phys_addr, u32 frame_count,
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megasas_fire_cmd_skinny(struct megasas_instance *instance,
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dma_addr_t frame_phys_addr,
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u32 frame_count,
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struct megasas_register_set __iomem *regs)
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{
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unsigned long flags;
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spin_lock_irqsave(&instance->fire_lock, flags);
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writel(0, &(regs)->inbound_high_queue_port);
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writel((frame_phys_addr | (frame_count<<1))|1,
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&(regs)->inbound_low_queue_port);
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spin_unlock_irqrestore(&instance->fire_lock, flags);
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}
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static struct megasas_instance_template megasas_instance_template_skinny = {
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@ -508,7 +519,9 @@ megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
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* @regs : MFI register set
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*/
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static inline void
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megasas_fire_cmd_gen2(dma_addr_t frame_phys_addr, u32 frame_count,
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megasas_fire_cmd_gen2(struct megasas_instance *instance,
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dma_addr_t frame_phys_addr,
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u32 frame_count,
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struct megasas_register_set __iomem *regs)
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{
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writel((frame_phys_addr | (frame_count<<1))|1,
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@ -550,7 +563,8 @@ megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
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/*
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* Issue the frame using inbound queue port
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*/
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instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set);
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instance->instancet->fire_cmd(instance,
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cmd->frame_phys_addr, 0, instance->reg_set);
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/*
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* Wait for cmd_status to change
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@ -581,7 +595,8 @@ megasas_issue_blocked_cmd(struct megasas_instance *instance,
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{
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cmd->cmd_status = ENODATA;
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instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set);
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instance->instancet->fire_cmd(instance,
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cmd->frame_phys_addr, 0, instance->reg_set);
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wait_event_timeout(instance->int_cmd_wait_q, (cmd->cmd_status != ENODATA),
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MEGASAS_INTERNAL_CMD_WAIT_TIME*HZ);
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@ -626,7 +641,8 @@ megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
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cmd->sync_cmd = 1;
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cmd->cmd_status = 0xFF;
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instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set);
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instance->instancet->fire_cmd(instance,
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cmd->frame_phys_addr, 0, instance->reg_set);
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/*
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* Wait for this cmd to complete
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@ -1153,7 +1169,8 @@ megasas_queue_command(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
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*/
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atomic_inc(&instance->fw_outstanding);
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instance->instancet->fire_cmd(cmd->frame_phys_addr ,cmd->frame_count-1,instance->reg_set);
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instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
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cmd->frame_count-1, instance->reg_set);
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/*
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* Check if we have pend cmds to be completed
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*/
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@ -1346,8 +1363,16 @@ static int megasas_wait_for_outstanding(struct megasas_instance *instance)
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* Send signal to FW to stop processing any pending cmds.
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* The controller will be taken offline by the OS now.
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*/
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writel(MFI_STOP_ADP,
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if ((instance->pdev->device ==
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PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
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(instance->pdev->device ==
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PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
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writel(MFI_STOP_ADP,
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&instance->reg_set->reserved_0[0]);
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} else {
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writel(MFI_STOP_ADP,
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&instance->reg_set->inbound_doorbell);
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}
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megasas_dump_pending_frames(instance);
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instance->hw_crit_error = 1;
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return FAILED;
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@ -1799,7 +1824,7 @@ megasas_transition_to_ready(struct megasas_instance* instance)
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/*
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* Set the CLR bit in inbound doorbell
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*/
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if ((instance->pdev->device == \
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if ((instance->pdev->device ==
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PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
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(instance->pdev->device ==
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PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
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@ -2799,7 +2824,8 @@ megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
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/*
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* Issue the aen registration frame
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*/
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instance->instancet->fire_cmd(cmd->frame_phys_addr ,0,instance->reg_set);
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instance->instancet->fire_cmd(instance,
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cmd->frame_phys_addr, 0, instance->reg_set);
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return 0;
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}
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@ -2983,6 +3009,7 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
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init_waitqueue_head(&instance->abort_cmd_wait_q);
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spin_lock_init(&instance->cmd_pool_lock);
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spin_lock_init(&instance->fire_lock);
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spin_lock_init(&instance->completion_lock);
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spin_lock_init(&poll_aen_lock);
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@ -3005,7 +3032,7 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
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megasas_dbg_lvl = 0;
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instance->flag = 0;
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instance->unload = 0;
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instance->unload = 1;
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instance->last_time = 0;
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/*
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@ -3051,6 +3078,7 @@ megasas_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
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if (megasas_io_attach(instance))
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goto fail_io_attach;
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instance->unload = 0;
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return 0;
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fail_start_aen:
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@ -3174,6 +3202,7 @@ megasas_suspend(struct pci_dev *pdev, pm_message_t state)
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instance = pci_get_drvdata(pdev);
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host = instance->host;
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instance->unload = 1;
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if (poll_mode_io)
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del_timer_sync(&instance->io_completion_timer);
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@ -3269,6 +3298,8 @@ megasas_resume(struct pci_dev *pdev)
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megasas_start_timer(instance, &instance->io_completion_timer,
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megasas_io_completion_timer,
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MEGASAS_COMPLETION_TIMER_INTERVAL);
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instance->unload = 0;
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return 0;
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fail_irq:
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@ -3366,6 +3397,7 @@ static void __devexit megasas_detach_one(struct pci_dev *pdev)
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static void megasas_shutdown(struct pci_dev *pdev)
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{
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struct megasas_instance *instance = pci_get_drvdata(pdev);
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instance->unload = 1;
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megasas_flush_cache(instance);
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megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
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}
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@ -3615,6 +3647,17 @@ static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
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goto out_kfree_ioc;
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}
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if (instance->hw_crit_error == 1) {
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printk(KERN_DEBUG "Controller in Crit ERROR\n");
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error = -ENODEV;
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goto out_kfree_ioc;
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}
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if (instance->unload == 1) {
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error = -ENODEV;
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goto out_kfree_ioc;
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}
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/*
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* We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
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*/
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@ -3650,6 +3693,14 @@ static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
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if (!instance)
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return -ENODEV;
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if (instance->hw_crit_error == 1) {
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error = -ENODEV;
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}
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if (instance->unload == 1) {
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return -ENODEV;
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}
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mutex_lock(&instance->aen_mutex);
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error = megasas_register_aen(instance, aen.seq_num,
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aen.class_locale_word);
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@ -1157,17 +1157,6 @@ struct megasas_evt_detail {
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} __attribute__ ((packed));
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struct megasas_instance_template {
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void (*fire_cmd)(dma_addr_t ,u32 ,struct megasas_register_set __iomem *);
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void (*enable_intr)(struct megasas_register_set __iomem *) ;
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void (*disable_intr)(struct megasas_register_set __iomem *);
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int (*clear_intr)(struct megasas_register_set __iomem *);
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u32 (*read_fw_status_reg)(struct megasas_register_set __iomem *);
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};
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struct megasas_instance {
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u32 *producer;
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@ -1193,6 +1182,8 @@ struct megasas_instance {
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spinlock_t cmd_pool_lock;
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/* used to synch producer, consumer ptrs in dpc */
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spinlock_t completion_lock;
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/* used to sync fire the cmd to fw */
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spinlock_t fire_lock;
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struct dma_pool *frame_dma_pool;
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struct dma_pool *sense_dma_pool;
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@ -1224,6 +1215,18 @@ struct megasas_instance {
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struct timer_list io_completion_timer;
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};
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struct megasas_instance_template {
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void (*fire_cmd)(struct megasas_instance *, dma_addr_t, \
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u32, struct megasas_register_set __iomem *);
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void (*enable_intr)(struct megasas_register_set __iomem *) ;
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void (*disable_intr)(struct megasas_register_set __iomem *);
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int (*clear_intr)(struct megasas_register_set __iomem *);
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u32 (*read_fw_status_reg)(struct megasas_register_set __iomem *);
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};
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#define MEGASAS_IS_LOGICAL(scp) \
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(scp->device->channel < MEGASAS_MAX_PD_CHANNELS) ? 0 : 1
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