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| author | Dmitry Torokhov <dtor_core@ameritech.net> | 2005-07-11 09:58:04 +0400 |
|---|---|---|
| committer | Dmitry Torokhov <dtor_core@ameritech.net> | 2005-07-11 09:58:04 +0400 |
| commit | e0d21d9cca25f424f3129649be48a63c128ed42d (patch) | |
| tree | 0a7d407639876e02deef1721817615eaa8c673a3 /drivers/pci/pcie/portdrv_pci.c | |
| parent | beffbdc2211826b174c68307b1b48c93c05d7ded (diff) | |
| parent | 5c23804a0941a111752fdacefe0bea2db1b4d93f (diff) | |
| download | linux-e0d21d9cca25f424f3129649be48a63c128ed42d.tar.xz | |
Merge rsync://www.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'drivers/pci/pcie/portdrv_pci.c')
| -rw-r--r-- | drivers/pci/pcie/portdrv_pci.c | 79 |
1 files changed, 78 insertions, 1 deletions
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index e9095ee508e3..30bac7ed7c16 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -29,6 +29,78 @@ MODULE_LICENSE("GPL"); /* global data */ static const char device_name[] = "pcieport-driver"; +static void pci_save_msi_state(struct pci_dev *dev) +{ + struct pcie_port_device_ext *p_ext = pci_get_drvdata(dev); + int i = 0, pos; + u16 control; + + if ((pos = pci_find_capability(dev, PCI_CAP_ID_MSI)) <= 0) + return; + + pci_read_config_dword(dev, pos, &p_ext->saved_msi_config_space[i++]); + control = p_ext->saved_msi_config_space[0] >> 16; + pci_read_config_dword(dev, pos + PCI_MSI_ADDRESS_LO, + &p_ext->saved_msi_config_space[i++]); + if (control & PCI_MSI_FLAGS_64BIT) { + pci_read_config_dword(dev, pos + PCI_MSI_ADDRESS_HI, + &p_ext->saved_msi_config_space[i++]); + pci_read_config_dword(dev, pos + PCI_MSI_DATA_64, + &p_ext->saved_msi_config_space[i++]); + } else + pci_read_config_dword(dev, pos + PCI_MSI_DATA_32, + &p_ext->saved_msi_config_space[i++]); + if (control & PCI_MSI_FLAGS_MASKBIT) + pci_read_config_dword(dev, pos + PCI_MSI_MASK_BIT, + &p_ext->saved_msi_config_space[i++]); +} + +static void pci_restore_msi_state(struct pci_dev *dev) +{ + struct pcie_port_device_ext *p_ext = pci_get_drvdata(dev); + int i = 0, pos; + u16 control; + + if ((pos = pci_find_capability(dev, PCI_CAP_ID_MSI)) <= 0) + return; + + control = p_ext->saved_msi_config_space[i++] >> 16; + pci_write_config_word(dev, pos + PCI_MSI_FLAGS, control); + pci_write_config_dword(dev, pos + PCI_MSI_ADDRESS_LO, + p_ext->saved_msi_config_space[i++]); + if (control & PCI_MSI_FLAGS_64BIT) { + pci_write_config_dword(dev, pos + PCI_MSI_ADDRESS_HI, + p_ext->saved_msi_config_space[i++]); + pci_write_config_dword(dev, pos + PCI_MSI_DATA_64, + p_ext->saved_msi_config_space[i++]); + } else + pci_write_config_dword(dev, pos + PCI_MSI_DATA_32, + p_ext->saved_msi_config_space[i++]); + if (control & PCI_MSI_FLAGS_MASKBIT) + pci_write_config_dword(dev, pos + PCI_MSI_MASK_BIT, + p_ext->saved_msi_config_space[i++]); +} + +static void pcie_portdrv_save_config(struct pci_dev *dev) +{ + struct pcie_port_device_ext *p_ext = pci_get_drvdata(dev); + + pci_save_state(dev); + if (p_ext->interrupt_mode == PCIE_PORT_MSI_MODE) + pci_save_msi_state(dev); +} + +static void pcie_portdrv_restore_config(struct pci_dev *dev) +{ + struct pcie_port_device_ext *p_ext = pci_get_drvdata(dev); + + pci_restore_state(dev); + if (p_ext->interrupt_mode == PCIE_PORT_MSI_MODE) + pci_restore_msi_state(dev); + pci_enable_device(dev); + pci_set_master(dev); +} + /* * pcie_portdrv_probe - Probe PCI-Express port devices * @dev: PCI-Express port device being probed @@ -64,16 +136,21 @@ static int __devinit pcie_portdrv_probe (struct pci_dev *dev, static void pcie_portdrv_remove (struct pci_dev *dev) { pcie_port_device_remove(dev); + kfree(pci_get_drvdata(dev)); } #ifdef CONFIG_PM static int pcie_portdrv_suspend (struct pci_dev *dev, pm_message_t state) { - return pcie_port_device_suspend(dev, state); + int ret = pcie_port_device_suspend(dev, state); + + pcie_portdrv_save_config(dev); + return ret; } static int pcie_portdrv_resume (struct pci_dev *dev) { + pcie_portdrv_restore_config(dev); return pcie_port_device_resume(dev); } #endif |