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Recognize PC-98 16-bits bus (C-bus) as ISA bus. Because class number

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of the C-bus is not assigned, PCI to C-bus bridges were recognized as
generic PCI bridges.
This commit is contained in:
KATO Takenori 1999-04-20 11:36:36 +00:00
parent 4da1577ed0
commit 275d4ec481
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=45862
1 changed files with 24 additions and 7 deletions
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31
sys/pci/pcisupport.c
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@ -1,6 +1,6 @@
/**************************************************************************
**
** $Id: pcisupport.c,v 1.98 1999/04/18 15:50:35 peter Exp $
** $Id: pcisupport.c,v 1.99 1999/04/18 18:44:21 jkh Exp $
**
** Device driver for DEC/INTEL PCI chipsets.
**
@ -944,6 +944,15 @@ isab_match(device_t dev)
/* SiS -- vendor 0x1039 */
case 0x00081039:
return ("SiS 85c503 PCI-ISA bridge");
/* NEC -- vendor 0x1033 */
/* The "C-bus" is 16-bits bus on PC98. */
case 0x00011033:
return ("NEC 0001 PCI to PC-98 C-bus bridge");
case 0x002c1033:
return ("NEC 002C PCI to PC-98 C-bus bridge");
case 0x003b1033:
return ("NEC 003B PCI to PC-98 C-bus bridge");
}
if (pci_get_class(dev) == PCIC_BRIDGE
@ -1128,22 +1137,30 @@ chip_match(device_t dev)
#endif
/* NEC -- vendor 0x1033 */
case 0x00011033:
return ("NEC 0001 PCI to PC-98 C-bus bridge");
case 0x00021033:
return ("NEC 0002 PCI to PC-98 local bus bridge");
case 0x00161033:
return ("NEC 0016 PCI to PC-98 local bus bridge");
case 0x002c1033:
return ("NEC 002C PCI to PC-98 C-bus bridge");
case 0x003b1033:
return ("NEC 003B PCI to PC-98 C-bus bridge");
/* AcerLabs -- vendor 0x10b9 */
/* Funny : The datasheet told me vendor id is "10b8",sub-vendor */
/* id is '10b9" but the register always shows "10b9". -Foxfair */
case 0x154110b9:
return("AcerLabs M1541 (Aladdin-V) PCI host bridge");
/* NEC -- vendor 0x1033 */
/* PCI to C-bus bridge */
/* The following chipsets are PCI to PC98 C-bus bridge.
* The C-bus is the 16-bits bus on PC98 and it should be probed as
* PCI to ISA bridge. Because class of the C-bus is not defined,
* C-bus bridges are recognized as "other bridge." To make C-bus
* bridge be recognized as ISA bridge, this function returns NULL.
*/
case 0x00011033:
case 0x002c1033:
case 0x003b1033:
return NULL;
};
if (pci_get_class(dev) == PCIC_BRIDGE