diff options
Diffstat (limited to 'src/mainboard/tyan/s2885/mptable.c')
| -rw-r--r-- | src/mainboard/tyan/s2885/mptable.c | 45 |
1 files changed, 43 insertions, 2 deletions
diff --git a/src/mainboard/tyan/s2885/mptable.c b/src/mainboard/tyan/s2885/mptable.c index 2396ade53e..a9683d577c 100644 --- a/src/mainboard/tyan/s2885/mptable.c +++ b/src/mainboard/tyan/s2885/mptable.c @@ -7,6 +7,42 @@ #include <cpu/amd/dualcore.h> #endif + +static unsigned node_link_to_bus(unsigned node, unsigned link) +{ + device_t dev; + unsigned reg; + + dev = dev_find_slot(0, PCI_DEVFN(0x18, 1)); + if (!dev) { + return 0; + } + for(reg = 0xE0; reg < 0xF0; reg += 0x04) { + uint32_t config_map; + unsigned dst_node; + unsigned dst_link; + unsigned bus_base; + config_map = pci_read_config32(dev, reg); + if ((config_map & 3) != 3) { + continue; + } + dst_node = (config_map >> 4) & 7; + dst_link = (config_map >> 8) & 3; + bus_base = (config_map >> 16) & 0xff; +#if 0 + printk_debug("node.link=bus: %d.%d=%d 0x%2x->0x%08x\n", + dst_node, dst_link, bus_base, + reg, config_map); +#endif + if ((dst_node == node) && (dst_link == link)) + { + return bus_base; + } + } + return 0; +} + + void *smp_write_config_table(void *v) { static const char sig[4] = "PCMP"; @@ -51,9 +87,14 @@ void *smp_write_config_table(void *v) { device_t dev; + /* HT chain 0 */ + bus_8151_0 = node_link_to_bus(0, 0); + if (bus_8151_0 == 0) { + printk_debug("ERROR - cound not find bus for node 0 chain 0, using defaults\n"); + bus_8151_0 = 1; + } /* 8151 */ - bus_8151_0 = 1; - dev = dev_find_slot(1, PCI_DEVFN(0x02,0)); + dev = dev_find_slot(bus_8151_0, PCI_DEVFN(0x02,0)); if (dev) { bus_8151_1 = pci_read_config8(dev, PCI_SECONDARY_BUS); // printk_debug("bus_8151_1=%d\n",bus_8151_1); |