The patch titled
nVidia quirk to make AER PCI-E extended capability visible
has been added to the -mm tree. Its filename is
nvidia-quirk-to-make-aer-pci-e-extended-capability-visible.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: nVidia quirk to make AER PCI-E extended capability visible
From: Brice Goglin <brice@xxxxxxxx>
The nVidia CK804 PCI-E chipset supports the AER extended capability but
sometimes fails to link it (with some BIOS or after a warm reboot). It
makes the AER cap invisible to pci_find_ext_capability().
The patch adds a quirk to set the missing bit that controls the linking of
the capability. By the way, it removes the corresponding code in the
myri10ge driver.
Signed-off-by: Brice Goglin <brice@xxxxxxxx>
Signed-off-by: Loic Prylli <loic@xxxxxxxx>
Cc: "David S. Miller" <davem@xxxxxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Cc: Jeff Garzik <jeff@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
drivers/pci/quirks.c | 19 +++++++++++++++++++
include/linux/pci_ids.h | 1 +
2 files changed, 20 insertions(+)
diff -puN drivers/pci/quirks.c~nvidia-quirk-to-make-aer-pci-e-extended-capability-visible drivers/pci/quirks.c
--- a/drivers/pci/quirks.c~nvidia-quirk-to-make-aer-pci-e-extended-capability-visible
+++ a/drivers/pci/quirks.c
@@ -1542,6 +1542,25 @@ static void __devinit quirk_p64h2_1k_io(
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x1460, quirk_p64h2_1k_io);
+/* Under some circumstances, AER is not linked with extended capabilities.
+ * Force it to be linked by setting the corresponding control bit in the
+ * config space.
+ */
+static void __devinit quirk_nvidia_ck804_pcie_aer_ext_cap(struct pci_dev *dev)
+{
+ uint8_t b;
+ if (pci_read_config_byte(dev, 0xf41, &b) == 0) {
+ if (!(b & 0x20)) {
+ pci_write_config_byte(dev, 0xf41, b | 0x20);
+ printk(KERN_INFO
+ "PCI: Linking AER extended capability on %s\n",
+ pci_name(dev));
+ }
+ }
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
+ quirk_nvidia_ck804_pcie_aer_ext_cap);
+
EXPORT_SYMBOL(pcie_mch_quirk);
#ifdef CONFIG_HOTPLUG
EXPORT_SYMBOL(pci_fixup_device);
diff -puN include/linux/pci_ids.h~nvidia-quirk-to-make-aer-pci-e-extended-capability-visible include/linux/pci_ids.h
--- a/include/linux/pci_ids.h~nvidia-quirk-to-make-aer-pci-e-extended-capability-visible
+++ a/include/linux/pci_ids.h
@@ -1021,6 +1021,7 @@
#define PCI_DEVICE_ID_NVIDIA_NVENET_8 0x0056
#define PCI_DEVICE_ID_NVIDIA_NVENET_9 0x0057
#define PCI_DEVICE_ID_NVIDIA_CK804_AUDIO 0x0059
+#define PCI_DEVICE_ID_NVIDIA_CK804_PCIE 0x005d
#define PCI_DEVICE_ID_NVIDIA_NFORCE2_SMBUS 0x0064
#define PCI_DEVICE_ID_NVIDIA_NFORCE2_IDE 0x0065
#define PCI_DEVICE_ID_NVIDIA_NVENET_2 0x0066
_
Patches currently in -mm which might be from brice@xxxxxxxx are
git-netdev-all.patch
nvidia-quirk-to-make-aer-pci-e-extended-capability-visible.patch
add-__iowrite64_copy.patch
-
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