From 2c956bbc19c5dec3b882db5ecc9a2074f3afb1e8 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Fri, 17 Dec 2004 21:08:16 +0000 Subject: non coherent ht chain setup automatically git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1824 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/northbridge/amd/amdk8/incoherent_ht.c | 141 +++++++++++++++++++++++------- 1 file changed, 108 insertions(+), 33 deletions(-) (limited to 'src/northbridge/amd') diff --git a/src/northbridge/amd/amdk8/incoherent_ht.c b/src/northbridge/amd/amdk8/incoherent_ht.c index 55b37cc4a8..c5f7f2da6f 100644 --- a/src/northbridge/amd/amdk8/incoherent_ht.c +++ b/src/northbridge/amd/amdk8/incoherent_ht.c @@ -12,8 +12,7 @@ static unsigned ht_lookup_slave_capability(device_t dev) hdr_type &= 0x7f; if ((hdr_type == PCI_HEADER_TYPE_NORMAL) || - (hdr_type == PCI_HEADER_TYPE_BRIDGE)) - { + (hdr_type == PCI_HEADER_TYPE_BRIDGE)) { pos = PCI_CAPABILITY_LIST; } if (pos > PCI_CAP_LIST_NEXT) { @@ -39,18 +38,26 @@ static unsigned ht_lookup_slave_capability(device_t dev) static void ht_collapse_previous_enumeration(unsigned bus) { device_t dev; + uint32_t id; + /* Check if is already collapsed */ + dev = PCI_DEV(bus, 0, 0); + id = pci_read_config32(dev, PCI_VENDOR_ID); + if ( ! ( (id == 0xffffffff) || (id == 0x00000000) || + (id == 0x0000ffff) || (id == 0xffff0000) ) ) { + return; + } + /* Spin through the devices and collapse any previous * hypertransport enumeration. */ - for(dev = PCI_DEV(bus, 0, 0); dev <= PCI_DEV(bus, 0x1f, 0x7); dev += PCI_DEV(0, 1, 0)) { + for(dev = PCI_DEV(bus, 1, 0); dev <= PCI_DEV(bus, 0x1f, 0x7); dev += PCI_DEV(0, 1, 0)) { uint32_t id; unsigned pos, flags; id = pci_read_config32(dev, PCI_VENDOR_ID); if ((id == 0xffffffff) || (id == 0x00000000) || - (id == 0x0000ffff) || (id == 0xffff0000)) - { + (id == 0x0000ffff) || (id == 0xffff0000)) { continue; } @@ -92,7 +99,7 @@ static unsigned ht_read_freq_cap(device_t dev, unsigned pos) return freq_cap; } -#define LINK_OFFS(WIDTH,FREQ,FREQ_CAP) \ +#define LINK_OFFS(WIDTH,FREQ,FREQ_CAP) \ (((WIDTH & 0xff) << 16) | ((FREQ & 0xff) << 8) | (FREQ_CAP & 0xFF)) #define LINK_WIDTH(OFFS) ((OFFS >> 16) & 0xFF) @@ -196,8 +203,6 @@ static int ht_setup_chain(device_t udev, unsigned upos) int reset_needed; unsigned uoffs; -#warning "FIXME handle multiple chains!" - /* Make certain the HT bus is not enumerated */ ht_collapse_previous_enumeration(0); @@ -214,8 +219,8 @@ static int ht_setup_chain(device_t udev, unsigned upos) 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)) { + (((id >> 16) & 0xffff) == 0xffff) || + (((id >> 16) & 0xffff) == 0x0000)) { break; } @@ -247,9 +252,6 @@ static int ht_setup_chain(device_t udev, unsigned upos) return reset_needed; } -struct ht_chain { - unsigned devreg; -}; static int ht_setup_chainx(device_t udev, unsigned upos, unsigned bus) { unsigned next_unitid, last_unitid; @@ -274,15 +276,7 @@ static int ht_setup_chainx(device_t udev, unsigned upos, unsigned bus) (((id >> 16) & 0xffff) == 0x0000)) { break; } -#if 0 - print_debug("bus="); - print_debug_hex8(bus); - print_debug(" id ="); - print_debug_hex32(id); - print_debug("\r\n"); -#endif - pos = ht_lookup_slave_capability(dev); if (!pos) { print_err("HT link capability not found\r\n"); @@ -311,7 +305,7 @@ static int ht_setup_chainx(device_t udev, unsigned upos, unsigned bus) return reset_needed; } -static int ht_setup_chains(const struct ht_chain *ht_c, int ht_c_num) +static int ht_setup_chains(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 @@ -332,7 +326,7 @@ static int ht_setup_chains(const struct ht_chain *ht_c, int ht_c_num) uint32_t dword; unsigned busn; - reg = pci_read_config32(PCI_DEV(0,0x18,1), ht_c[i].devreg); + reg = pci_read_config32(PCI_DEV(0,0x18,1), 0xe0 + i * 4); //We need setup 0x94, 0xb4, and 0xd4 according to the reg devpos = ((reg & 0xf0)>>4)+0x18; // nodeid; it will decide 0x18 or 0x19 @@ -343,13 +337,9 @@ static int ht_setup_chains(const struct ht_chain *ht_c, int ht_c_num) dword &= ~(0xffff<<8); dword |= (reg & 0xffff0000)>>8; pci_write_config32( PCI_DEV(0, devpos,0), regpos , dword); + #if 0 - print_debug("udev=(0,0x"); - print_debug_hex8(devpos); - print_debug(",0) 0x"); - print_debug_hex8(regpos); - print_debug("="); - print_debug_hex32(dword); + dump_pci_devices_on_bus(busn); #endif /* Make certain the HT bus is not enumerated */ @@ -357,11 +347,10 @@ static int ht_setup_chains(const struct ht_chain *ht_c, int ht_c_num) upos = ((reg & 0xf00)>>8) * 0x20 + 0x80; udev = PCI_DEV(0, devpos, 0); + #if 0 - print_debug("\tupos=0x"); - print_debug_hex32(upos); - print_debug("\r\n"); -#endif + dump_pci_devices_on_bus(busn); +#endif reset_needed |= ht_setup_chainx(udev,upos,busn ); @@ -369,3 +358,89 @@ static int ht_setup_chains(const struct ht_chain *ht_c, int ht_c_num) return reset_needed; } + +static int ht_setup_chains_x(void) +{ + int nodeid; + uint32_t reg; + uint32_t tempreg; + unsigned next_busn; + int ht_c_num; + + // read PCI_DEV(0,0x18,0) 0x64 bit [8:9] to find out SbLink m + reg = pci_read_config32(PCI_DEV(0, 0x18, 0), 0x64); + //update PCI_DEV(0, 0x18, 1) 0xe0 to 0x05000m03, and next_busn=5+1; + tempreg = 3 | ( 0<<4) | (((reg>>8) & 3)<<8) | (0<<16)| (5<<24); + pci_write_config32(PCI_DEV(0, 0x18, 1), 0xe0, tempreg); + next_busn=5+1; // 0 will be used ht chain with SB we need to keep SB in bus0 in auto stage + // clean others + for(ht_c_num=1;ht_c_num<4; ht_c_num++) { + pci_write_config32(PCI_DEV(0, 0x18, 1), 0xe0 + ht_c_num * 4, 0); + } + + for(nodeid=0; nodeid<8; nodeid++) { + device_t dev; + unsigned linkn; + dev = PCI_DEV(0, 0x18+nodeid,0); + //read id, check id to see if dev exists ; + reg = pci_read_config32(dev, PCI_VENDOR_ID); + if (((reg & 0xffff) == 0x0000) || ((reg & 0xffff) == 0xffff) || + (((reg >> 16) & 0xffff) == 0xffff) || + (((reg >> 16) & 0xffff) == 0x0000)) { + break; + } + for(linkn = 0; linkn<3; linkn++) { + unsigned regpos; + regpos = 0x98 + 0x20 * linkn; + reg = pci_read_config32(dev, regpos); + if ((reg & 7) != 7) continue; // it is not non conherent or not connected + tempreg = 3 | (nodeid <<4) | (linkn<<8); + //compare (temp & 0xffff), with (PCI(0, 0x18, 1) 0xe0 to 0xec & 0xfffff) + for(ht_c_num=0;ht_c_num<4; ht_c_num++) { + reg = pci_read_config32(PCI_DEV(0, 0x18, 1), 0xe0 + ht_c_num * 4); + if(((reg & 0xffff) == (tempreg & 0xffff)) || ((reg & 0xffff) == 0x0000)) { // we got it + break; + } + } + if(ht_c_num == 4) break; //used up onle 4 non conherent allowed + //update to 0xe0... + if((reg & 0xf) == 3) continue; //SBLink so don't touch it + tempreg |= (next_busn<<16)|((next_busn+5)<<24); + pci_write_config32(PCI_DEV(0, 0x18, 1), 0xe0 + ht_c_num * 4, tempreg); + next_busn+=5+1; + } + } + //update 0xe0, 0xe4, 0xe8, 0xec from PCI_DEV(0, 0x18,1) to PCI_DEV(0, 0x19,1) to PCI_DEV(0, 0x1f,1); + + for(nodeid = 1; nodeid<8; nodeid++) { + int i; + device_t dev; + dev = PCI_DEV(0, 0x18+nodeid,1); + //read id, check id to see if dev exists ; + reg = pci_read_config32(dev, PCI_VENDOR_ID); + if (((reg & 0xffff) == 0x0000) || ((reg & 0xffff) == 0xffff) || + (((reg >> 16) & 0xffff) == 0xffff) || + (((reg >> 16) & 0xffff) == 0x0000)) { + break; + } + for(i = 0; i< 4; i++) { + unsigned regpos; + regpos = 0xe0 + i * 4; + reg = pci_read_config32(PCI_DEV(0, 0x18, 1), regpos); + pci_write_config32(dev, regpos, reg); + + } + } + + // recount ht_c_num + int i=0; + for(ht_c_num=0;ht_c_num<4; ht_c_num++) { + reg = pci_read_config32(PCI_DEV(0, 0x18, 1), 0xe0 + ht_c_num * 4); + if(((reg & 0xf) != 0x0)) { + i++; + } + } + + return ht_setup_chains(i); + +} -- cgit v1.2.3