diff options
Diffstat (limited to 'src/northbridge/amd/amdk8/incoherent_ht.c')
| -rw-r--r-- | src/northbridge/amd/amdk8/incoherent_ht.c | 27 |
1 files changed, 10 insertions, 17 deletions
diff --git a/src/northbridge/amd/amdk8/incoherent_ht.c b/src/northbridge/amd/amdk8/incoherent_ht.c index 3c6cf33c9f..40589c475c 100644 --- a/src/northbridge/amd/amdk8/incoherent_ht.c +++ b/src/northbridge/amd/amdk8/incoherent_ht.c @@ -532,19 +532,13 @@ static int optimize_link_read_pointers_chain(uint8_t ht_c_num) reset_needed = 0; + /* First one is SB HT chain. */ for (i = 0; i < ht_c_num; i++) { uint32_t reg; uint8_t nodeid, linkn; uint8_t busn; uint8_t val; - unsigned devn = 1; - - #if ((CONFIG_HT_CHAIN_UNITID_BASE != 1) || (CONFIG_HT_CHAIN_END_UNITID_BASE != 0x20)) - #if CONFIG_SB_HT_CHAIN_UNITID_OFFSET_ONLY - if(i==0) // to check if it is sb ht chain - #endif - devn = CONFIG_HT_CHAIN_UNITID_BASE; - #endif + unsigned devn; reg = pci_read_config32(PCI_DEV(0,0x18,1), 0xe0 + i * 4); @@ -552,6 +546,11 @@ static int optimize_link_read_pointers_chain(uint8_t ht_c_num) linkn = ((reg & 0xf00)>>8); // link n busn = (reg & 0xff0000)>>16; //busn + unsigned offset_unitid = (CONFIG_HT_CHAIN_UNITID_BASE != 1) || (CONFIG_HT_CHAIN_END_UNITID_BASE != 0x20); + offset_unitid = offset_unitid && (!CONFIG_SB_HT_CHAIN_UNITID_OFFSET_ONLY || (i == 0)); + + devn = offset_unitid ? CONFIG_HT_CHAIN_UNITID_BASE : 1; + reg = pci_read_config32( PCI_DEV(busn, devn, 0), PCI_VENDOR_ID); // ? the chain dev maybe offseted if ( (reg & 0xffff) == PCI_VENDOR_ID_AMD) { val = 0x25; @@ -649,14 +648,13 @@ static int ht_setup_chains(uint8_t ht_c_num) sysinfo->link_pair_num = 0; #endif - // first one is SB Chain + /* First one is SB HT chain. */ for (i = 0; i < ht_c_num; i++) { uint32_t reg; uint8_t devpos; unsigned regpos; uint32_t dword; uint8_t busn; - unsigned offset_unitid = 0; reg = pci_read_config32(PCI_DEV(0,0x18,1), 0xe0 + i * 4); @@ -670,13 +668,8 @@ static int ht_setup_chains(uint8_t ht_c_num) dword |= (reg & 0xffff0000)>>8; pci_write_config32( PCI_DEV(0, devpos,0), regpos , dword); - - #if ((CONFIG_HT_CHAIN_UNITID_BASE != 1) || (CONFIG_HT_CHAIN_END_UNITID_BASE != 0x20)) - #if CONFIG_SB_HT_CHAIN_UNITID_OFFSET_ONLY - if(i==0) // to check if it is sb ht chain - #endif - offset_unitid = 1; - #endif + unsigned offset_unitid = (CONFIG_HT_CHAIN_UNITID_BASE != 1) || (CONFIG_HT_CHAIN_END_UNITID_BASE != 0x20); + offset_unitid = offset_unitid && (!CONFIG_SB_HT_CHAIN_UNITID_OFFSET_ONLY || (i == 0)); /* Make certain the HT bus is not enumerated */ ht_collapse_previous_enumeration(busn, offset_unitid); |