[SCSI] 3w-9xxx: add power management support
Signed-off-by: Adam Radford <aradford@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
adam radford
James Bottomley
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7a252fe7bc
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@ -4,7 +4,7 @@
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Written By: Adam Radford <linuxraid@amcc.com>
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Modifications By: Tom Couch <linuxraid@amcc.com>
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Copyright (C) 2004-2008 Applied Micro Circuits Corporation.
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Copyright (C) 2004-2009 Applied Micro Circuits Corporation.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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@ -75,6 +75,7 @@
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Add MSI support and "use_msi" module parameter.
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Fix bug in twa_get_param() on 4GB+.
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Use pci_resource_len() for ioremap().
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2.26.02.012 - Add power management support.
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*/
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#include <linux/module.h>
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@ -99,7 +100,7 @@
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#include "3w-9xxx.h"
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/* Globals */
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#define TW_DRIVER_VERSION "2.26.02.011"
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#define TW_DRIVER_VERSION "2.26.02.012"
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static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT];
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static unsigned int twa_device_extension_count;
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static int twa_major = -1;
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@ -2182,6 +2183,98 @@ static void twa_remove(struct pci_dev *pdev)
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twa_device_extension_count--;
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} /* End twa_remove() */
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#ifdef CONFIG_PM
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/* This function is called on PCI suspend */
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static int twa_suspend(struct pci_dev *pdev, pm_message_t state)
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{
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struct Scsi_Host *host = pci_get_drvdata(pdev);
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TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
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printk(KERN_WARNING "3w-9xxx: Suspending host %d.\n", tw_dev->host->host_no);
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TW_DISABLE_INTERRUPTS(tw_dev);
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free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
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if (test_bit(TW_USING_MSI, &tw_dev->flags))
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pci_disable_msi(pdev);
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/* Tell the card we are shutting down */
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if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) {
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TW_PRINTK(tw_dev->host, TW_DRIVER, 0x38, "Connection shutdown failed during suspend");
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} else {
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printk(KERN_WARNING "3w-9xxx: Suspend complete.\n");
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}
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TW_CLEAR_ALL_INTERRUPTS(tw_dev);
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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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} /* End twa_suspend() */
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/* This function is called on PCI resume */
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static int twa_resume(struct pci_dev *pdev)
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{
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int retval = 0;
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struct Scsi_Host *host = pci_get_drvdata(pdev);
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TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
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printk(KERN_WARNING "3w-9xxx: Resuming host %d.\n", tw_dev->host->host_no);
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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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retval = pci_enable_device(pdev);
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if (retval) {
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TW_PRINTK(tw_dev->host, TW_DRIVER, 0x39, "Enable device failed during resume");
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return retval;
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}
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pci_set_master(pdev);
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pci_try_set_mwi(pdev);
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if (pci_set_dma_mask(pdev, DMA_64BIT_MASK)
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|| pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
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if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)
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|| pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK)) {
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TW_PRINTK(host, TW_DRIVER, 0x40, "Failed to set dma mask during resume");
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retval = -ENODEV;
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goto out_disable_device;
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}
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/* Initialize the card */
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if (twa_reset_sequence(tw_dev, 0)) {
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retval = -ENODEV;
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goto out_disable_device;
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}
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/* Now setup the interrupt handler */
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retval = request_irq(pdev->irq, twa_interrupt, IRQF_SHARED, "3w-9xxx", tw_dev);
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if (retval) {
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TW_PRINTK(tw_dev->host, TW_DRIVER, 0x42, "Error requesting IRQ during resume");
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retval = -ENODEV;
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goto out_disable_device;
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}
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/* Now enable MSI if enabled */
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if (test_bit(TW_USING_MSI, &tw_dev->flags))
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pci_enable_msi(pdev);
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/* Re-enable interrupts on the card */
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TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
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printk(KERN_WARNING "3w-9xxx: Resume complete.\n");
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return 0;
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out_disable_device:
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scsi_remove_host(host);
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pci_disable_device(pdev);
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return retval;
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} /* End twa_resume() */
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#endif
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/* PCI Devices supported by this driver */
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static struct pci_device_id twa_pci_tbl[] __devinitdata = {
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{ PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9000,
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@ -2202,6 +2295,10 @@ static struct pci_driver twa_driver = {
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.id_table = twa_pci_tbl,
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.probe = twa_probe,
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.remove = twa_remove,
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#ifdef CONFIG_PM
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.suspend = twa_suspend,
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.resume = twa_resume,
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#endif
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.shutdown = twa_shutdown
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};
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@ -4,7 +4,7 @@
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Written By: Adam Radford <linuxraid@amcc.com>
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Modifications By: Tom Couch <linuxraid@amcc.com>
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Copyright (C) 2004-2008 Applied Micro Circuits Corporation.
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Copyright (C) 2004-2009 Applied Micro Circuits Corporation.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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