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YhLu's patch for multi-ht-chain for S2885 

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1478 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Li-Ta Lo 2004-03-25 17:50:06 +00:00
parent 30667d75a6
commit edeff59c72
3 changed files with 134 additions and 3 deletions
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23
src/mainboard/tyan/s2885/auto.c
View File

@ -149,6 +149,22 @@ static void main(void)
},
#endif
};
static const struct ht_chain ht_c[] = {
{
.udev = PCI_DEV(0, 0x18, 0),
.upos = 0xc0,
.devreg = 0xe2,
.mindev = 1,
},
{
.udev = PCI_DEV(0, 0x18, 0),
.upos = 0x80,
.devreg = 0xe6,
.mindev = 5,
},
};
int needs_reset;
enable_lapic();
init_timer();
@ -164,11 +180,16 @@ static void main(void)
console_init();
setup_s2885_resource_map();
needs_reset = setup_coherent_ht_domain();
needs_reset |= ht_setup_chain(PCI_DEV(0, 0x18, 0), 0xc0);
// needs_reset |= ht_setup_chain(PCI_DEV(0, 0x18, 0), 0xc0);
needs_reset |= ht_setup_chains(ht_c, sizeof(ht_c)/sizeof(ht_c[0]));
if (needs_reset) {
print_info("ht reset -");
soft_reset();
}
#if 0
dump_pci_devices();
#endif
#if 0
print_pci_devices();

6
src/mainboard/tyan/s2885/resourcemap.c
View File

@ -252,8 +252,10 @@ static void setup_s2885_resource_map(void)
* [31:24] Bus Number Limit i
* This field defines the highest bus number in configuration regin i
*/
PCI_ADDR(0, 0x18, 1, 0xE0), 0x0000FC88, 0x04000203,
PCI_ADDR(0, 0x18, 1, 0xE4), 0x0000FC88, 0x06050003,
PCI_ADDR(0, 0x18, 1, 0xE0), 0x0000FC88, 0x04010207,
PCI_ADDR(0, 0x18, 1, 0xE4), 0x0000FC88, 0x06050007,
// PCI_ADDR(0, 0x18, 1, 0xE0), 0x0000FC88, 0x04000203,
// PCI_ADDR(0, 0x18, 1, 0xE4), 0x0000FC88, 0x06050003,
// PCI_ADDR(0, 0x18, 1, 0xE0), 0x0000FC88, 0x00000203,
// PCI_ADDR(0, 0x18, 1, 0xE4), 0x0000FC88, 0x00000000,
PCI_ADDR(0, 0x18, 1, 0xE8), 0x0000FC88, 0x00000000,

108
src/northbridge/amd/amdk8/incoherent_ht.c
View File

@ -242,3 +242,111 @@ static int ht_setup_chain(device_t udev, unsigned upos)
} while((last_unitid != next_unitid) && (next_unitid <= 0x1f));
return reset_needed;
}
struct ht_chain {
device_t udev;
unsigned upos;
unsigned devreg;
unsigned mindev;
};
static int ht_setup_chains(const struct ht_chain *ht_c, int ht_c_num)
{
/* Assumption the HT chain that is bus 0 has the HT I/O Hub on it.
* On most boards this just happens. If a cpu has multiple
* non Coherent links the appropriate bus registers for the
* links needs to be programed to point at bus 0.
*/
unsigned next_unitid, last_unitid;
int reset_needed;
unsigned uoffs;
unsigned upos;
device_t udev;
int i;
/* Make certain the HT bus is not enumerated */
ht_collapse_previous_enumeration(0);
reset_needed = 0;
next_unitid = 1;
for(i=0;i<ht_c_num;i++) {
#if 0
unsigned tmp;
tmp = pci_read_config8(PCI_DEV(0,0x18,1),ht_c[i].devreg);
#endif
pci_write_config8(PCI_DEV(0,0x18,1), ht_c[i].devreg, 0);
#if CONFIG_MAX_CPUS > 1
pci_write_config8(PCI_DEV(0,0x19,1), ht_c[i].devreg, 0);
#endif
#if CONFIG_MAX_CPUS > 2
pci_write_config8(PCI_DEV(0,0x1a,1), ht_c[i].devreg, 0);
pci_write_config8(PCI_DEV(0,0x1b,1), ht_c[i].devreg, 0);
#endif
uoffs = PCI_HT_HOST_OFFS;
upos = ht_c[i].upos;
udev = ht_c[i].udev;
do {
uint32_t id;
uint8_t pos;
unsigned flags, count;
device_t dev = PCI_DEV(0, 0, 0);
last_unitid = next_unitid;
id = pci_read_config32(dev, PCI_VENDOR_ID);
/* If the chain is enumerated quit */
if (((id & 0xffff) == 0x0000) || ((id & 0xffff) == 0xffff) ||
(((id >> 16) & 0xffff) == 0xffff) ||
(((id >> 16) & 0xffff) == 0x0000)) {
break;
}
pos = ht_lookup_slave_capability(dev);
if (!pos) {
print_err("HT link capability not found\r\n");
break;
}
/* Setup the Hypertransport link */
reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, PCI_HT_SLAVE0_OFFS);
/* 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);
/* Remeber the location of the last device */
udev = PCI_DEV(0, next_unitid, 0);
upos = pos;
uoffs = 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));
#if 0
pci_write_config8(PCI_DEV(0,0x18,1), ht_c[i].devreg, tmp);
#if CONFIG_MAX_CPUS > 1
pci_write_config8(PCI_DEV(0,0x19,1), ht_c[i].devreg, tmp);
#endif
#if CONFIG_MAX_CPUS > 2
pci_write_config8(PCI_DEV(0,0x1a,1), ht_c[i].devreg, tmp);
pci_write_config8(PCI_DEV(0,0x1b,1), ht_c[i].devreg, tmp);
#endif
#else
pci_write_config8(PCI_DEV(0,0x18,1), ht_c[i].devreg, ht_c[i].mindev);
#if CONFIG_MAX_CPUS > 1
pci_write_config8(PCI_DEV(0,0x19,1), ht_c[i].devreg, ht_c[i].mindev);
#endif
#if CONFIG_MAX_CPUS > 2
pci_write_config8(PCI_DEV(0,0x1a,1), ht_c[i].devreg, ht_c[i].mindev);
pci_write_config8(PCI_DEV(0,0x1b,1), ht_c[i].devreg, ht_c[i].mindev);
#endif
#endif
}
return reset_needed;
}