Emulation/switch-coreboot
1
0
Fork 0
mirror of https://github.com/fail0verflow/switch-coreboot.git synced 2025-05-04 01:39:18 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fix a simply bug in the find device function.

Browse source 
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>



git-svn-id: svn://coreboot.org/repository/coreboot-v3@821 f3766cd6-281f-0410-b1cd-43a5c92072e9
This commit is contained in:
Ronald G. Minnich 2008-08-25 05:11:59 +00:00
parent 8a9d1f2b24
commit 8f9073449a
1 changed files with 9 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
arch/x86/pci_ops_conf1.c
View file

@ -119,7 +119,8 @@ int pci_conf1_find_on_bus(u16 bus, u16 vid, u16 did, u32 *busdevfn)
u8 hdr;
int bdf = bus << 16;
/* skip over all the function sin a device -- multifunction devices always have one vendor */
/* skip over all the functions in a device --
* multifunction devices always have one vendor */
for (devfn = 0; devfn < 0x100; devfn += 8) {
u32 confaddr = bdf | (devfn << 8);
val = pci_conf1_read_config32(confaddr, PCI_VENDOR_ID);
@ -127,7 +128,6 @@ int pci_conf1_find_on_bus(u16 bus, u16 vid, u16 did, u32 *busdevfn)
if (val == 0xffffffff || val == 0x00000000 ||
val == 0x0000ffff || val == 0xffff0000)
continue;
if (val == ((did << 16) | vid)) {
*busdevfn = confaddr;
return 1;
@ -135,10 +135,16 @@ int pci_conf1_find_on_bus(u16 bus, u16 vid, u16 did, u32 *busdevfn)
hdr = pci_conf1_read_config8(confaddr, PCI_HEADER_TYPE);
hdr &= 0x7F;
if (hdr == PCI_HEADER_TYPE_BRIDGE || hdr == PCI_HEADER_TYPE_CARDBUS) {
unsigned int busses;
busses = pci_conf1_read_config32(confaddr, PCI_PRIMARY_BUS);
/* We should never see a value of 0.
* this can happen if we run this before
* things are set up (which we have to be able to do
* in stage 0
*/
if (! busses)
continue;
if (pci_conf1_find_on_bus((busses >> 8) & 0xFF, vid, did, busdevfn))
return 1;
}