diff options
| -rw-r--r-- | drivers/pci/msi.c | 5 | ||||
| -rw-r--r-- | drivers/pci/pci.h | 2 | ||||
| -rw-r--r-- | drivers/pci/quirks.c | 21 | ||||
| -rw-r--r-- | include/linux/pci.h | 3 | ||||
| -rw-r--r-- | include/linux/pci_ids.h | 5 |
5 files changed, 33 insertions, 3 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index b5ab9aa6..2b85aa3 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -453,7 +453,7 @@ static void enable_msi_mode(struct pci_dev *dev, int pos, int type) } } -static void disable_msi_mode(struct pci_dev *dev, int pos, int type) +void disable_msi_mode(struct pci_dev *dev, int pos, int type) { u16 control; @@ -699,6 +699,9 @@ int pci_enable_msi(struct pci_dev* dev) if (!pci_msi_enable || !dev) return status; + if (dev->no_msi) + return status; + temp = dev->irq; if ((status = msi_init()) < 0) diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index d94d7af..fa36094 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -46,7 +46,7 @@ extern int pci_msi_quirk; #else #define pci_msi_quirk 0 #endif - +void disable_msi_mode(struct pci_dev *dev, int pos, int type); extern int pcie_mch_quirk; extern struct device_attribute pci_dev_attrs[]; extern struct class_device_attribute class_device_attr_cpuaffinity; diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index a9160ad..bb36bb6 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -1291,6 +1291,27 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, quir DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, quirk_pcie_mch ); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, quirk_pcie_mch ); + +/* + * It's possible for the MSI to get corrupted if shpc and acpi + * are used together on certain PXH-based systems. + */ +static void __devinit quirk_pcie_pxh(struct pci_dev *dev) +{ + disable_msi_mode(dev, pci_find_capability(dev, PCI_CAP_ID_MSI), + PCI_CAP_ID_MSI); + dev->no_msi = 1; + + printk(KERN_WARNING "PCI: PXH quirk detected, " + "disabling MSI for SHPC device\n"); +} +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_0, quirk_pcie_pxh); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHD_1, quirk_pcie_pxh); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_0, quirk_pcie_pxh); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXH_1, quirk_pcie_pxh); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PXHV, quirk_pcie_pxh); + + static void __devinit quirk_netmos(struct pci_dev *dev) { unsigned int num_parallel = (dev->subsystem_device & 0xf0) >> 4; diff --git a/include/linux/pci.h b/include/linux/pci.h index 8621cf4..bc4c400 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -556,7 +556,8 @@ struct pci_dev { /* keep track of device state */ unsigned int is_enabled:1; /* pci_enable_device has been called */ unsigned int is_busmaster:1; /* device is busmaster */ - + unsigned int no_msi:1; /* device may not use msi */ + u32 saved_config_space[16]; /* config space saved at suspend time */ struct bin_attribute *rom_attr; /* attribute descriptor for sysfs ROM entry */ int rom_attr_enabled; /* has display of the rom attribute been enabled? */ diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index bc4cc10..51e61e9 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -2281,6 +2281,11 @@ #define PCI_VENDOR_ID_INTEL 0x8086 #define PCI_DEVICE_ID_INTEL_EESSC 0x0008 #define PCI_DEVICE_ID_INTEL_21145 0x0039 +#define PCI_DEVICE_ID_INTEL_PXHD_0 0x0320 +#define PCI_DEVICE_ID_INTEL_PXHD_1 0x0321 +#define PCI_DEVICE_ID_INTEL_PXH_0 0x0329 +#define PCI_DEVICE_ID_INTEL_PXH_1 0x032A +#define PCI_DEVICE_ID_INTEL_PXHV 0x032C #define PCI_DEVICE_ID_INTEL_82375 0x0482 #define PCI_DEVICE_ID_INTEL_82424 0x0483 #define PCI_DEVICE_ID_INTEL_82378 0x0484 |
