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Make pci_get_capability() work correctly on both header type 0 and type 2

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devices; both have different Capability List Pointer registers.
This commit is contained in:
kleink 2000-05-08 10:52:38 +00:00
parent 085ec82073
commit 05f0b17555
1 changed files with 14 additions and 2 deletions
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16
sys/dev/pci/pci.c
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@ -1,4 +1,4 @@
/* $NetBSD: pci.c,v 1.46 2000/03/30 12:45:35 augustss Exp $ */
/* $NetBSD: pci.c,v 1.47 2000/05/08 10:52:38 kleink Exp $ */
/*
* Copyright (c) 1995, 1996, 1997, 1998
@ -369,7 +369,19 @@ pci_get_capability(pc, tag, capid, offset, value)
if (!(reg & PCI_STATUS_CAPLIST_SUPPORT))
return (0);
ofs = PCI_CAPLIST_PTR(pci_conf_read(pc, tag, PCI_CAPLISTPTR_REG));
reg = pci_conf_read(pc, tag, PCI_BHLC_REG);
switch (PCI_HDRTYPE_TYPE(reg)) {
case 0: /* standard device header */
ofs = PCI_CAPLISTPTR_REG;
break;
case 2: /* PCI-CardBus Bridge header */
ofs = PCI_CARDBUS_CAPLISTPTR_REG;
break;
default:
return (0);
}
ofs = PCI_CAPLIST_PTR(pci_conf_read(pc, tag, ofs));
while (ofs != 0) {
#ifdef DIAGNOSTIC
if ((ofs & 3) || (ofs < 0x40))