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authorDoug Thompson <norsk5@yahoo.com>2006-05-08 17:06:09 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2006-06-21 11:59:59 -0700
commitbd8481e1646d7649fa101ee57a5139b9da3c2436 (patch)
tree6b64dfebc5c7eb36a3487f51373347341f36cac2 /include/linux
parent53e4d30dd666d7f83598957ee4a415eefb47c9a6 (diff)
[PATCH] PCI Bus Parity Status-broken hardware attribute, EDAC foundation
Currently, the EDAC (error detection and correction) modules that are in the kernel contain some features that need to be moved. After some good feedback on the PCI Parity detection code and interface (http://www.ussg.iu.edu/hypermail/linux/kernel/0603.1/0897.html) this patch ADDs an new attribute to the pci_dev structure: Namely the 'broken_parity_status' bit. When set this indicates that the respective hardware generates false positives of Parity errors. The EDAC "blacklist" solution was inferior and will be removed in a future patch. Also in this patch is a PCI quirk.c entry for an Infiniband PCI-X card which generates false positive parity errors. I am requesting comments on this AND on the possibility of a exposing this 'broken_parity_status' bit to userland via the PCI device sysfs directory for devices. This access would allow for enabling of this feature on new devices and for old devices that have their drivers updated. (SLES 9 SP3 did this on an ATI motherboard video device). There is a need to update such a PCI attribute between kernel releases. This patch just adds a storage place for the attribute and a quirk entry for a known bad PCI device. PCI Parity reaper/harvestor operations are in EDAC itself and will be refactored to use this PCI attribute instead of its own mechanisms (which are currently disabled) in the future. Signed-off-by: Doug Thompson <norsk5@xmission.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/pci.h1
-rw-r--r--include/linux/pci_ids.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h
index b9eb9b021d6..91c37750cd3 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -162,6 +162,7 @@ struct pci_dev {
unsigned int is_busmaster:1; /* device is busmaster */
unsigned int no_msi:1; /* device may not use msi */
unsigned int block_ucfg_access:1; /* userspace config space access is blocked */
+ unsigned int broken_parity_status:1; /* Device generates false positive parity */
u32 saved_config_space[16]; /* config space saved at suspend time */
struct hlist_head saved_cap_space;
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index bcfe9d4f56a..3d197cdcfa3 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1946,6 +1946,7 @@
#define PCI_VENDOR_ID_MELLANOX 0x15b3
#define PCI_DEVICE_ID_MELLANOX_TAVOR 0x5a44
+#define PCI_DEVICE_ID_MELLANOX_TAVOR_BRIDGE 0x5a46
#define PCI_DEVICE_ID_MELLANOX_ARBEL_COMPAT 0x6278
#define PCI_DEVICE_ID_MELLANOX_ARBEL 0x6282
#define PCI_DEVICE_ID_MELLANOX_SINAI_OLD 0x5e8c