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Deal with systems, that lack a fully decoded PCI configuration space.

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Submitted by:	<wolf@kintaro.cologne.de> Wolfgang Stanglmeier
This commit is contained in:
Stefan Eßer 1995-02-25 17:26:22 +00:00
parent c3a1e4250f
commit ef2dee21dc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=6704
2 changed files with 44 additions and 4 deletions
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24
sys/dev/pci/pci.c
View File

@ -1,6 +1,6 @@
/**************************************************************************
**
** $Id: pci.c,v 1.14 1995/02/14 23:33:38 se Exp $
** $Id: pci.c,v 1.15 1995/02/22 14:17:15 se Exp $
**
** General subroutines for the PCI bus on 80*86 systems.
** pci_configure ()
@ -36,7 +36,7 @@
***************************************************************************
*/
#define PCI_PATCHLEVEL "pl2 95/02/21"
#define PCI_PATCHLEVEL "pl3 95/02/25"
#include <pci.h>
#if NPCI > 0
@ -166,6 +166,8 @@ static u_long pci_irq = PCI_IRQ;
** May be called more than once.
** Any device is attached only once.
** (Attached devices are remembered in pci_seen.)
** Has to take care of mirrored devices, which are
** entailed by incomplete decoding of pci address lines.
**
**---------------------------------------------------------
*/
@ -244,6 +246,24 @@ void pci_configure()
dvp = NULL;
};
/*
** check for mirrored devices.
*/
if (device >= 8) {
pcici_t tag0;
pcidi_t type0;
tag0 = pcibus.pb_tag (bus, device & 0x07, 0);
type0 = pcibus.pb_read (tag0, PCI_ID_REG);
if (type==type0) {
#ifndef PCI_QUIET
if (dvp==NULL) continue;
printf ("%s? <%s> mirrored on pci%d:%d\n",
dvp->pd_name, name, bus, device);
#endif
continue;
};
};
if (dvp==NULL) {
#ifndef PCI_QUIET
if (pci_conf_count)

24
sys/pci/pci.c
View File

@ -1,6 +1,6 @@
/**************************************************************************
**
** $Id: pci.c,v 1.14 1995/02/14 23:33:38 se Exp $
** $Id: pci.c,v 1.15 1995/02/22 14:17:15 se Exp $
**
** General subroutines for the PCI bus on 80*86 systems.
** pci_configure ()
@ -36,7 +36,7 @@
***************************************************************************
*/
#define PCI_PATCHLEVEL "pl2 95/02/21"
#define PCI_PATCHLEVEL "pl3 95/02/25"
#include <pci.h>
#if NPCI > 0
@ -166,6 +166,8 @@ static u_long pci_irq = PCI_IRQ;
** May be called more than once.
** Any device is attached only once.
** (Attached devices are remembered in pci_seen.)
** Has to take care of mirrored devices, which are
** entailed by incomplete decoding of pci address lines.
**
**---------------------------------------------------------
*/
@ -244,6 +246,24 @@ void pci_configure()
dvp = NULL;
};
/*
** check for mirrored devices.
*/
if (device >= 8) {
pcici_t tag0;
pcidi_t type0;
tag0 = pcibus.pb_tag (bus, device & 0x07, 0);
type0 = pcibus.pb_read (tag0, PCI_ID_REG);
if (type==type0) {
#ifndef PCI_QUIET
if (dvp==NULL) continue;
printf ("%s? <%s> mirrored on pci%d:%d\n",
dvp->pd_name, name, bus, device);
#endif
continue;
};
};
if (dvp==NULL) {
#ifndef PCI_QUIET
if (pci_conf_count)