aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/pci/quirks.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/pci/quirks.c')
-rw-r--r--drivers/pci/quirks.c42
1 files changed, 38 insertions, 4 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index a0c20d9e8396..89ed181cd90c 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -91,6 +91,19 @@ static void __devinit quirk_resource_alignment(struct pci_dev *dev)
91} 91}
92DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_resource_alignment); 92DECLARE_PCI_FIXUP_HEADER(PCI_ANY_ID, PCI_ANY_ID, quirk_resource_alignment);
93 93
94/*
95 * Decoding should be disabled for a PCI device during BAR sizing to avoid
96 * conflict. But doing so may cause problems on host bridge and perhaps other
97 * key system devices. For devices that need to have mmio decoding always-on,
98 * we need to set the dev->mmio_always_on bit.
99 */
100static void __devinit quirk_mmio_always_on(struct pci_dev *dev)
101{
102 if ((dev->class >> 8) == PCI_CLASS_BRIDGE_HOST)
103 dev->mmio_always_on = 1;
104}
105DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, quirk_mmio_always_on);
106
94/* The Mellanox Tavor device gives false positive parity errors 107/* The Mellanox Tavor device gives false positive parity errors
95 * Mark this device with a broken_parity_status, to allow 108 * Mark this device with a broken_parity_status, to allow
96 * PCI scanning code to "skip" this now blacklisted device. 109 * PCI scanning code to "skip" this now blacklisted device.
@@ -2121,6 +2134,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disabl
2121DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi); 2134DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
2122DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi); 2135DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
2123DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi); 2136DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
2137DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
2124 2138
2125/* Disable MSI on chipsets that are known to not support it */ 2139/* Disable MSI on chipsets that are known to not support it */
2126static void __devinit quirk_disable_msi(struct pci_dev *dev) 2140static void __devinit quirk_disable_msi(struct pci_dev *dev)
@@ -2132,12 +2146,29 @@ static void __devinit quirk_disable_msi(struct pci_dev *dev)
2132 } 2146 }
2133} 2147}
2134DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi); 2148DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_8131_BRIDGE, quirk_disable_msi);
2135DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9602, quirk_disable_msi);
2136DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASUSTEK, 0x9602, quirk_disable_msi);
2137DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AI, 0x9602, quirk_disable_msi);
2138DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi); 2149DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, 0xa238, quirk_disable_msi);
2139DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi); 2150DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x5a3f, quirk_disable_msi);
2140 2151
2152/*
2153 * The APC bridge device in AMD 780 family northbridges has some random
2154 * OEM subsystem ID in its vendor ID register (erratum 18), so instead
2155 * we use the possible vendor/device IDs of the host bridge for the
2156 * declared quirk, and search for the APC bridge by slot number.
2157 */
2158static void __devinit quirk_amd_780_apc_msi(struct pci_dev *host_bridge)
2159{
2160 struct pci_dev *apc_bridge;
2161
2162 apc_bridge = pci_get_slot(host_bridge->bus, PCI_DEVFN(1, 0));
2163 if (apc_bridge) {
2164 if (apc_bridge->device == 0x9602)
2165 quirk_disable_msi(apc_bridge);
2166 pci_dev_put(apc_bridge);
2167 }
2168}
2169DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9600, quirk_amd_780_apc_msi);
2170DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AMD, 0x9601, quirk_amd_780_apc_msi);
2171
2141/* Go through the list of Hypertransport capabilities and 2172/* Go through the list of Hypertransport capabilities and
2142 * return 1 if a HT MSI capability is found and enabled */ 2173 * return 1 if a HT MSI capability is found and enabled */
2143static int __devinit msi_ht_cap_enabled(struct pci_dev *dev) 2174static int __devinit msi_ht_cap_enabled(struct pci_dev *dev)
@@ -2396,6 +2427,9 @@ static void __devinit __nv_msi_ht_cap_quirk(struct pci_dev *dev, int all)
2396 int pos; 2427 int pos;
2397 int found; 2428 int found;
2398 2429
2430 if (!pci_msi_enabled())
2431 return;
2432
2399 /* check if there is HT MSI cap or enabled on this device */ 2433 /* check if there is HT MSI cap or enabled on this device */
2400 found = ht_check_msi_mapping(dev); 2434 found = ht_check_msi_mapping(dev);
2401 2435
@@ -2748,7 +2782,7 @@ static int __init pci_apply_final_quirks(void)
2748 printk(KERN_DEBUG "PCI: CLS %u bytes\n", 2782 printk(KERN_DEBUG "PCI: CLS %u bytes\n",
2749 pci_cache_line_size << 2); 2783 pci_cache_line_size << 2);
2750 2784
2751 while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { 2785 for_each_pci_dev(dev) {
2752 pci_fixup_device(pci_fixup_final, dev); 2786 pci_fixup_device(pci_fixup_final, dev);
2753 /* 2787 /*
2754 * If arch hasn't set it explicitly yet, use the CLS 2788 * If arch hasn't set it explicitly yet, use the CLS