PCI quirk to unhide SMBus on Compaq Deskpro EP 401963-001 (PCA# 010174)
motherboard with i810 chipset.
Signed-off-by: GW <[EMAIL PROTECTED]>
---
Patch is for kernel source 2.6.21 with Debian patches.
Seems to work fine with no conflicts.
Motherboard identification based on host bridge device is a little strange,
because there isn't any subsystem information (subvendor id or subdevice id are
set to 0x0000).
lspci -v -nn -s 00:00.0
00:00.0 Host bridge [0600]: Intel Corporation 82810 DC-100 GMCH [Graphics
Memory Controller Hub] [8086:7122] (rev 02)
Flags: bus master, fast devsel, latency 0
After implied patch SMBus is present:
lspci -v -nn -s 00:1f.3
00:1f.3 SMBus [0c05]: Intel Corporation 82801AA SMBus [8086:2413] (rev 01)
Flags: medium devsel, IRQ 11
I/O ports at fc00 [size=16]
diff -Naur linux-source-2.6.21/drivers/pci/quirks.c
linux-source-2.6.21-unhidesmbusoncompaqdeskproep/drivers/pci/quirks.c
--- linux-source-2.6.21/drivers/pci/quirks.c 2007-07-10 18:46:19.000000000
+0200
+++ linux-source-2.6.21-unhidesmbusoncompaqdeskproep/drivers/pci/quirks.c
2007-07-26 14:21:13.000000000 +0200
@@ -1059,6 +1059,12 @@
case 0x0058: /* Compaq Evo N620c */
asus_hides_smbus = 1;
}
+ } else if (unlikely(dev->subsystem_vendor == PCI_CLASS_NOT_DEFINED)) {
+ if (dev->device == PCI_DEVICE_ID_INTEL_82810_MC3)
+ switch(dev->subsystem_device) {
+ case 0x0000: /* Compaq Deskpro EP 401963-001 (PCA#
010174) motherboard with i810 chipset doesn't have subsystem identification */
+ asus_hides_smbus = 1;
+ }
}
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82845_HB,
asus_hides_smbus_hostbridge );
@@ -1070,6 +1076,7 @@
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855PM_HB,
asus_hides_smbus_hostbridge );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82855GM_HB,
asus_hides_smbus_hostbridge );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82915GM_HB,
asus_hides_smbus_hostbridge );
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82810_MC3,
asus_hides_smbus_hostbridge );
static void asus_hides_smbus_lpc(struct pci_dev *dev)
{
@@ -1088,12 +1095,14 @@
printk(KERN_INFO "PCI: Enabled i801 SMBus device\n");
}
}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0,
asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0,
asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0,
asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0,
asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12,
asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12,
asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0,
asus_hides_smbus_lpc );
+DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0,
asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0,
asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_0,
asus_hides_smbus_lpc );
DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0,
asus_hides_smbus_lpc );
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