diff options
Diffstat (limited to 'xorg-server/hw/xfree86/int10/xf86int10.c')
| -rw-r--r-- | xorg-server/hw/xfree86/int10/xf86int10.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/xorg-server/hw/xfree86/int10/xf86int10.c b/xorg-server/hw/xfree86/int10/xf86int10.c index f50607cfc..51eb91fbb 100644 --- a/xorg-server/hw/xfree86/int10/xf86int10.c +++ b/xorg-server/hw/xfree86/int10/xf86int10.c @@ -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", |