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

linkb_to_host 

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1895 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Yinghai Lu 2005-01-20 20:41:17 +00:00
parent 3f5ef301a7
commit e324731152
1 changed files with 41 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
src/northbridge/amd/amdk8/incoherent_ht.c
View File

@ -241,26 +241,31 @@ static int ht_setup_chain(device_t udev, uint8_t upos)
break; break;
} }
/* get ht direction */ /* Update the Unitid of the current device */
offs = ( (pci_read_config16(dev, pos + PCI_CAP_FLAGS) >> 10) & 1) ? PCI_HT_SLAVE1_OFFS : PCI_HT_SLAVE0_OFFS; flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS);
flags &= ~0x1f; /* mask out the bse Unit ID */
flags |= next_unitid & 0x1f;
pci_write_config16(dev, pos + PCI_CAP_FLAGS, flags);
/* Setup the Hypertransport link */ dev = PCI_DEV(0, next_unitid, 0);
reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, offs);
/* Update the Unitid of the current device */ /* Compute the number of unitids consumed */
flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS); count = (flags >> 5) & 0x1f;
flags &= ~0x1f; /* mask out the bse Unit ID */ next_unitid += count;
flags |= next_unitid & 0x1f;
pci_write_config16(dev, pos + PCI_CAP_FLAGS, flags);
/* Remeber the location of the last device */ /* get ht direction */
udev = PCI_DEV(0, next_unitid, 0); flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS); // double read ??
upos = pos;
uoffs = (offs != PCI_HT_SLAVE0_OFFS) ? PCI_HT_SLAVE0_OFFS : PCI_HT_SLAVE1_OFFS; offs = ((flags>>10) & 1) ? PCI_HT_SLAVE1_OFFS : PCI_HT_SLAVE0_OFFS;
/* Setup the Hypertransport link */
reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, offs);
/* Remeber the location of the last device */
udev = dev;
upos = pos;
uoffs = (offs != PCI_HT_SLAVE0_OFFS) ? PCI_HT_SLAVE0_OFFS : PCI_HT_SLAVE1_OFFS;
/* Compute the number of unitids consumed */
count = (flags >> 5) & 0x1f;
next_unitid += count;
} while((last_unitid != next_unitid) && (next_unitid <= 0x1f)); } while((last_unitid != next_unitid) && (next_unitid <= 0x1f));
return reset_needed; return reset_needed;
@ -298,26 +303,30 @@ static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus)
break; break;
} }
/* Update the Unitid of the current device */
flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS);
flags &= ~0x1f; /* mask out the bse Unit ID */
flags |= next_unitid & 0x1f;
pci_write_config16(dev, pos + PCI_CAP_FLAGS, flags);
dev = PCI_DEV(bus, next_unitid, 0);
/* Compute the number of unitids consumed */
count = (flags >> 5) & 0x1f;
next_unitid += count;
/* get ht direction */ /* get ht direction */
offs = ((pci_read_config16(dev, pos + PCI_CAP_FLAGS)>>10) & 1) ? PCI_HT_SLAVE1_OFFS : PCI_HT_SLAVE0_OFFS; flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS); // double read ??
/* Setup the Hypertransport link */ offs = ((flags>>10) & 1) ? PCI_HT_SLAVE1_OFFS : PCI_HT_SLAVE0_OFFS;
reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, offs);
/* Update the Unitid of the current device */ /* Setup the Hypertransport link */
flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS); reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, offs);
flags &= ~0x1f; /* mask out the bse Unit ID */
flags |= next_unitid & 0x1f;
pci_write_config16(dev, pos + PCI_CAP_FLAGS, flags);
/* Remeber the location of the last device */ /* Remeber the location of the last device */
udev = PCI_DEV(bus, next_unitid, 0); udev = dev;
upos = pos; upos = pos;
uoffs = ( offs != PCI_HT_SLAVE0_OFFS ) ? PCI_HT_SLAVE0_OFFS : PCI_HT_SLAVE1_OFFS; uoffs = ( offs != PCI_HT_SLAVE0_OFFS ) ? PCI_HT_SLAVE0_OFFS : PCI_HT_SLAVE1_OFFS;
/* Compute the number of unitids consumed */
count = (flags >> 5) & 0x1f;
next_unitid += count;
} while((last_unitid != next_unitid) && (next_unitid <= 0x1f)); } while((last_unitid != next_unitid) && (next_unitid <= 0x1f));
return reset_needed; return reset_needed;