arcmsr: add code to support hibernation
This patch adds code to support system hibernation. Signed-off-by: Ching Huang <ching2048@areca.com.tw> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
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@ -89,11 +89,15 @@ static int arcmsr_bios_param(struct scsi_device *sdev,
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static int arcmsr_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
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static int arcmsr_probe(struct pci_dev *pdev,
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const struct pci_device_id *id);
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static int arcmsr_suspend(struct pci_dev *pdev, pm_message_t state);
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static int arcmsr_resume(struct pci_dev *pdev);
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static void arcmsr_remove(struct pci_dev *pdev);
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static void arcmsr_shutdown(struct pci_dev *pdev);
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static void arcmsr_iop_init(struct AdapterControlBlock *acb);
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static void arcmsr_free_ccb_pool(struct AdapterControlBlock *acb);
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static u32 arcmsr_disable_outbound_ints(struct AdapterControlBlock *acb);
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static void arcmsr_enable_outbound_ints(struct AdapterControlBlock *acb,
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u32 intmask_org);
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static void arcmsr_stop_adapter_bgrb(struct AdapterControlBlock *acb);
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static void arcmsr_flush_hba_cache(struct AdapterControlBlock *acb);
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static void arcmsr_flush_hbb_cache(struct AdapterControlBlock *acb);
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@ -167,6 +171,8 @@ static struct pci_driver arcmsr_pci_driver = {
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.id_table = arcmsr_device_id_table,
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.probe = arcmsr_probe,
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.remove = arcmsr_remove,
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.suspend = arcmsr_suspend,
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.resume = arcmsr_resume,
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.shutdown = arcmsr_shutdown,
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};
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/*
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@ -773,6 +779,76 @@ static void arcmsr_free_irq(struct pci_dev *pdev,
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free_irq(pdev->irq, acb);
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}
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static int arcmsr_suspend(struct pci_dev *pdev, pm_message_t state)
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{
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uint32_t intmask_org;
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struct Scsi_Host *host = pci_get_drvdata(pdev);
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struct AdapterControlBlock *acb =
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(struct AdapterControlBlock *)host->hostdata;
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intmask_org = arcmsr_disable_outbound_ints(acb);
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arcmsr_free_irq(pdev, acb);
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del_timer_sync(&acb->eternal_timer);
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flush_work(&acb->arcmsr_do_message_isr_bh);
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arcmsr_stop_adapter_bgrb(acb);
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arcmsr_flush_adapter_cache(acb);
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pci_set_drvdata(pdev, host);
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pci_save_state(pdev);
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pci_disable_device(pdev);
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pci_set_power_state(pdev, pci_choose_state(pdev, state));
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return 0;
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}
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static int arcmsr_resume(struct pci_dev *pdev)
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{
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int error;
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struct Scsi_Host *host = pci_get_drvdata(pdev);
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struct AdapterControlBlock *acb =
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(struct AdapterControlBlock *)host->hostdata;
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pci_set_power_state(pdev, PCI_D0);
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pci_enable_wake(pdev, PCI_D0, 0);
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pci_restore_state(pdev);
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if (pci_enable_device(pdev)) {
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pr_warn("%s: pci_enable_device error\n", __func__);
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return -ENODEV;
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}
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error = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
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if (error) {
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error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
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if (error) {
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pr_warn("scsi%d: No suitable DMA mask available\n",
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host->host_no);
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goto controller_unregister;
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}
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}
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pci_set_master(pdev);
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if (arcmsr_request_irq(pdev, acb) == FAILED)
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goto controller_stop;
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arcmsr_iop_init(acb);
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INIT_WORK(&acb->arcmsr_do_message_isr_bh, arcmsr_message_isr_bh_fn);
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atomic_set(&acb->rq_map_token, 16);
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atomic_set(&acb->ante_token_value, 16);
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acb->fw_flag = FW_NORMAL;
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init_timer(&acb->eternal_timer);
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acb->eternal_timer.expires = jiffies + msecs_to_jiffies(6 * HZ);
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acb->eternal_timer.data = (unsigned long) acb;
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acb->eternal_timer.function = &arcmsr_request_device_map;
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add_timer(&acb->eternal_timer);
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return 0;
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controller_stop:
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arcmsr_stop_adapter_bgrb(acb);
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arcmsr_flush_adapter_cache(acb);
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controller_unregister:
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scsi_remove_host(host);
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arcmsr_free_ccb_pool(acb);
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arcmsr_unmap_pciregion(acb);
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pci_release_regions(pdev);
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scsi_host_put(host);
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pci_disable_device(pdev);
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return -ENODEV;
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}
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static uint8_t arcmsr_abort_hba_allcmd(struct AdapterControlBlock *acb)
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{
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struct MessageUnit_A __iomem *reg = acb->pmuA;
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