GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

This is the last remainder from Yinghai's mega patch. It fixes issues with 

devices conflicting with the northbridge devices on PCI bus 0.

Signed-off-by: Yinghai Lu <yinghailu@gmail.com>
Acked-by: Stefan Reinauer <stepan@coresystems.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2681 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Yinghai Lu 2007-05-21 18:11:17 +00:00 committed by Stefan Reinauer
parent c141282193
commit ecad5df6b7
1 changed files with 31 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
src/devices/hypertransport.c
View File

@ -383,6 +383,8 @@ unsigned int hypertransport_scan_chain(struct bus *bus,
struct ht_link prev;
device_t last_func = 0;
int ht_dev_num = 0;
unsigned temp_unitid;
unsigned not_use_count;
#if HT_CHAIN_END_UNITID_BASE < HT_CHAIN_UNITID_BASE
//let't record the device of last ht device, So we can set the Unitid to HT_CHAIN_END_UNITID_BASE
@ -473,39 +475,53 @@ unsigned int hypertransport_scan_chain(struct bus *bus,
if (flags & 0x1f) {
break;
}
flags &= ~0x1f; /* mask out base Unit ID */
flags |= next_unitid & 0x1f;
count = (flags >> 5) & 0x1f; /* get unit count */
not_use_count = 0;
temp_unitid = next_unitid;
#if HT_CHAIN_END_UNITID_BASE < HT_CHAIN_UNITID_BASE
if(offset_unitid) {
if((next_unitid+count)>=0x20) {
temp_unitid = HT_CHAIN_END_UNITID_BASE;
//still use the old next_unitid
not_use_count = 1;
}
}
#endif
flags |= temp_unitid & 0x1f;
pci_write_config16(dev, pos + PCI_CAP_FLAGS, flags);
/* Update the Unitd id in the device structure */
static_count = 1;
for(func = dev; func; func = func->sibling) {
func->path.u.pci.devfn += (next_unitid << 3);
func->path.u.pci.devfn += (temp_unitid << 3);
static_count = (func->path.u.pci.devfn >> 3)
- (dev->path.u.pci.devfn >> 3) + 1;
last_func = func;
}
/* Compute the number of unitids consumed */
count = (flags >> 5) & 0x1f; /* get unit count */
printk_spew("%s count: %04x static_count: %04x\n",
dev_path(dev), count, static_count);
if (count < static_count) {
count = static_count;
}
if(!not_use_count)
next_unitid += count;
/* Update the Unitid of the next device */
ht_unitid_base[ht_dev_num] = next_unitid;
ht_unitid_base[ht_dev_num] = temp_unitid;
ht_dev_num++;
#if HT_CHAIN_END_UNITID_BASE < HT_CHAIN_UNITID_BASE
if(offset_unitid) {
real_last_unitid = next_unitid;
real_last_pos = pos;
real_last_unitid = temp_unitid;
real_last_dev = dev;
}
#endif
next_unitid += count;
/* Setup the hypetransport link */
bus->reset_needed |= ht_setup_link(&prev, dev, pos);
@ -515,7 +531,7 @@ unsigned int hypertransport_scan_chain(struct bus *bus,
dev->vendor, dev->device,
(dev->enabled? "enabled": "disabled"), next_unitid);
} while((last_unitid != next_unitid) && (next_unitid <= (max_devfn >> 3)));
} while((last_unitid != next_unitid) && (next_unitid <= 0x1f /*(max_devfn >> 3)*/ ));
end_of_chain:
#if OPT_HT_LINK == 1
if(bus->reset_needed) {
@ -527,7 +543,7 @@ unsigned int hypertransport_scan_chain(struct bus *bus,
#endif
#if HT_CHAIN_END_UNITID_BASE < HT_CHAIN_UNITID_BASE
if(offset_unitid && (ht_dev_num>0)) {
if(offset_unitid && (ht_dev_num>1) && (real_last_unitid != HT_CHAIN_END_UNITID_BASE) ) {
uint16_t flags;
int i;
device_t last_func = 0;
@ -550,6 +566,9 @@ unsigned int hypertransport_scan_chain(struct bus *bus,
if (next_unitid > 0x1f) {
next_unitid = 0x1f;
}
if( (bus->secondary == 0) && (next_unitid > 0x17)) {
next_unitid = 0x17; /* avoid K8 on bus 0 */
}
/* Die if any leftover Static devices are are found.
* There's probably a problem in the Config.lb.
@ -567,7 +586,7 @@ unsigned int hypertransport_scan_chain(struct bus *bus,
/* Now that nothing is overlapping it is safe to scan the
* children.
*/
max = pci_scan_bus(bus, 0x00, (next_unitid << 3)|7, max);
max = pci_scan_bus(bus, 0x00, ((next_unitid-1) << 3)|7, max);
return max;
}