d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Updated to support new Meteor/PPB cards (PCI-PCI Bridge).

Browse Source 
The driver now identifies the IBM PCI-PCI Bridge fitted to newer
Matrox cards and initialises it.

Sumitted by: Anton Berezin <tobez@plab.ku.dk>
The Protein Laboratory, University of Copenhagen
This commit is contained in:
roger 1999-06-01 17:30:08 +00:00
parent 1efee9b283
commit eb1a4be892
1 changed files with 31 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
sys/pci/meteor.c
View File

@ -1029,6 +1029,37 @@ met_attach(pcici_t tag, int unit)
return ;
}
/*
* Check for Meteor/PPB (PCI-PCI Bridge)
* Reprogram IBM Bridge if detected.
* New Meteor cards have an IBM PCI-PCI bridge, creating a secondary
* PCI bus. The SAA chip is connected to this secondary bus.
*/
/* If we are not on PCI Bus 0, check for the Bridge */
if ( pci_get_bus_from_tag( tag ) != 0) {
pcici_t bridge_tag;
/* get tag of parent bridge */
bridge_tag = pci_get_parent_from_tag( tag );
/* Look for IBM 82351, 82352 or 82353 */
if (pci_conf_read(bridge_tag, PCI_ID_REG) == 0x00221014) {
if ( bootverbose)
printf("meteor%d: PPB device detected, reprogramming IBM bridge.\n", unit);
/* disable SERR */
pci_cfgwrite(bridge_tag, 0x05, 0x00, 1);
/* set LATENCY */
pci_cfgwrite(bridge_tag, 0x0d, 0x20, 1);
/* write posting enable, prefetch enabled --> GRAB direction */
pci_cfgwrite(bridge_tag, 0x42, 0x14, 1);
/* set PRTR Primary retry timer register */
pci_cfgwrite(bridge_tag, 0x4c, 0x10, 1);
}
}
mtr = &meteor[unit];
mtr->tag = tag;
pci_map_mem(tag, PCI_MAP_REG_START, (vm_offset_t *)&mtr->base,