Re: mthca and LinuxBIOS

yhlu
2005-08-05T20:28:24Z

please check the patch for fix overwrite upper 32bit

YH

--- drivers/pci/setup-res.c.orig 2005-08-05 10:08:45.000000000 -0700
+++ drivers/pci/setup-res.c 2005-08-05 13:25:06.000000000 -0700
@@ -33,6 +33,18 @@
u32 new, check, mask;
int reg;

+ if (resno < 6) {
+ reg = PCI_BASE_ADDRESS_0 + 4 * resno;
+ if((resno & 1)==1) {
+ /* check if previous reg is 64 mem */
+ pci_read_config_dword(dev, reg-4, &check );
+ if ((check &
(PCI_BASE_ADDRESS_SPACE|PCI_BASE_ADDRESS_MEM_TYPE_MASK)) ==
+
(PCI_BASE_ADDRESS_SPACE_MEMORY|PCI_BASE_ADDRESS_MEM_TYPE_64))
+ return;
+ }
+
+ }
+
pcibios_resource_to_bus(dev, &region, res);

pr_debug(" got res [%lx:%lx] bus [%lx:%lx] flags %lx for "
@@ -67,7 +79,7 @@

if ((new & (PCI_BASE_ADDRESS_SPACE|PCI_BASE_ADDRESS_MEM_TYPE_MASK)) ==
(PCI_BASE_ADDRESS_SPACE_MEMORY|PCI_BASE_ADDRESS_MEM_TYPE_64)) {
- new = 0; /* currently everyone zeros the high address */
+ new = region.start >> 32 ;
pci_write_config_dword(dev, reg + 4, new);
pci_read_config_dword(dev, reg + 4, &check);
if (check != new) {