andreacavalli/xserver-multidpi
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

int10: Fix int1A for %ax == 0xB101.

Browse Source 
pciNumBuses was pretty much always 1 post-pciaccess.  That ain't good.
This commit is contained in:
Adam Jackson 2008-08-18 15:09:44 -04:00
parent 539717fe1f
commit 2d3e478384
1 changed files with 27 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
hw/xfree86/int10/xf86int10.c
View File

@ -655,6 +655,32 @@ find_pci_class(CARD8 intf, CARD8 subClass, CARD16 _class,
}
#endif
/*
* Return the last bus number in the same domain as dev. Only look at the
* one domain since this is going into %cl, and VGA I/O is per-domain anyway.
*/
static int
int1A_last_bus_number(struct pci_device *dev)
{
struct pci_device *d;
struct pci_slot_match m = { dev->domain,
PCI_MATCH_ANY,
PCI_MATCH_ANY,
PCI_MATCH_ANY };
struct pci_device_iterator *iter;
int i = 0;
iter = pci_slot_match_iterator_create(&m);
while ((d = pci_device_next(iter)))
if (d->bus > i)
i = d->bus;
pci_iterator_destroy(iter);
return i;
}
static int
int1A_handler(xf86Int10InfoPtr pInt)
{
@ -674,7 +700,7 @@ int1A_handler(xf86Int10InfoPtr pInt)
X86_EDX = 0x20494350; /* " ICP" */
X86_EBX = 0x0210; /* Version 2.10 */
X86_ECX &= 0xFF00;
X86_ECX |= (pciNumBuses & 0xFF); /* Max bus number in system */
X86_ECX |= int1A_last_bus_number(pvp);
X86_EFLAGS &= ~((unsigned long)0x01); /* clear carry flag */
#ifdef PRINT_INT
ErrorF("ax=0x%x dx=0x%x bx=0x%x cx=0x%x flags=0x%x\n",