From c507e4de737108b6acb022ffd1a0b5678ea8062e Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Mon, 17 Jan 2005 21:32:36 +0000 Subject: linkb_to_host git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1879 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/northbridge/amd/amdk8/incoherent_ht.c | 78 +++++++++++++++++-------------- 1 file changed, 44 insertions(+), 34 deletions(-) (limited to 'src') diff --git a/src/northbridge/amd/amdk8/incoherent_ht.c b/src/northbridge/amd/amdk8/incoherent_ht.c index 2dc3043932..e348b67286 100644 --- a/src/northbridge/amd/amdk8/incoherent_ht.c +++ b/src/northbridge/amd/amdk8/incoherent_ht.c @@ -11,9 +11,9 @@ static inline void print_linkn_in (const char *strval, uint8_t byteval) print_debug(strval); print_debug_hex8(byteval); print_debug("\r\n"); } -static unsigned ht_lookup_slave_capability(device_t dev) +static uint8_t ht_lookup_slave_capability(device_t dev) { - unsigned pos; + uint8_t pos; uint8_t hdr_type; hdr_type = pci_read_config8(dev, PCI_HEADER_TYPE); @@ -44,7 +44,7 @@ static unsigned ht_lookup_slave_capability(device_t dev) return pos; } -static void ht_collapse_previous_enumeration(unsigned bus) +static void ht_collapse_previous_enumeration(uint8_t bus) { device_t dev; uint32_t id; @@ -62,7 +62,8 @@ static void ht_collapse_previous_enumeration(unsigned bus) */ 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; + uint8_t pos; + uint16_t flags; id = pci_read_config32(dev, PCI_VENDOR_ID); if ((id == 0xffffffff) || (id == 0x00000000) || @@ -82,10 +83,10 @@ static void ht_collapse_previous_enumeration(unsigned bus) } } -static unsigned ht_read_freq_cap(device_t dev, unsigned pos) +static uint16_t ht_read_freq_cap(device_t dev, uint8_t pos) { /* Handle bugs in valid hypertransport frequency reporting */ - unsigned freq_cap; + uint16_t freq_cap; uint32_t id; freq_cap = pci_read_config16(dev, pos); @@ -200,8 +201,7 @@ static int ht_optimize_link( return needs_reset; } - -static int ht_setup_chain(device_t udev, unsigned upos) +static int ht_setup_chain(device_t udev, uint8_t upos) { /* 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 @@ -221,7 +221,9 @@ static int ht_setup_chain(device_t udev, unsigned upos) do { uint32_t id; uint8_t pos; - unsigned flags, count; + uint16_t flags, count; + unsigned offs; + device_t dev = PCI_DEV(0, 0, 0); last_unitid = next_unitid; @@ -239,8 +241,11 @@ static int ht_setup_chain(device_t udev, unsigned upos) break; } + /* get ht direction */ + offs = (pci_read_config16(dev, pos + PCI_CAP_FLAGS) & (1<<10)) ? PCI_HT_SLAVE1_OFFS : PCI_HT_SLAVE0_OFFS; + /* Setup the Hypertransport link */ - reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, PCI_HT_SLAVE0_OFFS); + reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, offs); /* Update the Unitid of the current device */ flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS); @@ -251,7 +256,7 @@ static int ht_setup_chain(device_t udev, unsigned upos) /* Remeber the location of the last device */ udev = PCI_DEV(0, next_unitid, 0); upos = pos; - uoffs = 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; @@ -261,7 +266,7 @@ static int ht_setup_chain(device_t udev, unsigned upos) return reset_needed; } -static int ht_setup_chainx(device_t udev, unsigned upos, unsigned bus) +static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus) { unsigned next_unitid, last_unitid; unsigned uoffs; @@ -273,7 +278,8 @@ static int ht_setup_chainx(device_t udev, unsigned upos, unsigned bus) do { uint32_t id; uint8_t pos; - unsigned flags, count; + uint16_t flags, count; + unsigned offs; device_t dev = PCI_DEV(bus, 0, 0); last_unitid = next_unitid; @@ -292,8 +298,11 @@ static int ht_setup_chainx(device_t udev, unsigned upos, unsigned bus) break; } + /* get ht direction */ + offs = (pci_read_config16(dev, pos + PCI_CAP_FLAGS) & (1<<10)) ? PCI_HT_SLAVE1_OFFS : PCI_HT_SLAVE0_OFFS; + /* Setup the Hypertransport link */ - reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, PCI_HT_SLAVE0_OFFS); + reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, offs); /* Update the Unitid of the current device */ flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS); @@ -304,7 +313,7 @@ static int ht_setup_chainx(device_t udev, unsigned upos, unsigned bus) /* Remeber the location of the last device */ udev = PCI_DEV(bus, next_unitid, 0); upos = pos; - uoffs = 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; @@ -314,7 +323,7 @@ static int ht_setup_chainx(device_t udev, unsigned upos, unsigned bus) return reset_needed; } -static int optimize_link_read_pointer(unsigned node, unsigned linkn, uint8_t linkt, unsigned val) +static int optimize_link_read_pointer(uint8_t node, uint8_t linkn, uint8_t linkt, uint8_t val) { uint32_t dword, dword_old; uint8_t link_type; @@ -338,18 +347,18 @@ static int optimize_link_read_pointer(unsigned node, unsigned linkn, uint8_t lin return 0; } -static int optimize_link_in_coherent(int ht_c_num) +static int optimize_link_in_coherent(uint8_t ht_c_num) { int reset_needed; - int i; + uint8_t i; reset_needed = 0; for (i = 0; i < ht_c_num; i++) { uint32_t reg; - unsigned nodeid, linkn; - unsigned busn; - unsigned val; + uint8_t nodeid, linkn; + uint8_t busn; + uint8_t val; reg = pci_read_config32(PCI_DEV(0,0x18,1), 0xe0 + i * 4); @@ -373,7 +382,7 @@ static int optimize_link_in_coherent(int ht_c_num) return reset_needed; } -static int ht_setup_chains(int ht_c_num) +static int ht_setup_chains(uint8_t 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 @@ -381,18 +390,18 @@ static int ht_setup_chains(int ht_c_num) * links needs to be programed to point at bus 0. */ int reset_needed; - unsigned upos; + uint8_t upos; device_t udev; - int i; + uint8_t i; reset_needed = 0; for (i = 0; i < ht_c_num; i++) { uint32_t reg; - unsigned devpos; + uint8_t devpos; unsigned regpos; uint32_t dword; - unsigned busn; + uint8_t busn; reg = pci_read_config32(PCI_DEV(0,0x18,1), 0xe0 + i * 4); @@ -412,7 +421,8 @@ static int ht_setup_chains(int ht_c_num) upos = ((reg & 0xf00)>>8) * 0x20 + 0x80; udev = PCI_DEV(0, devpos, 0); - reset_needed |= ht_setup_chainx(udev,upos,busn ); + reset_needed |= ht_setup_chainx(udev,upos,busn); + } @@ -423,12 +433,12 @@ static int ht_setup_chains(int ht_c_num) static int ht_setup_chains_x(void) { - int nodeid; + uint8_t nodeid; uint32_t reg; uint32_t tempreg; - unsigned next_busn; - int ht_c_num; - int nodes; + uint8_t next_busn; + uint8_t ht_c_num; + uint8_t nodes; /* 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); @@ -447,14 +457,14 @@ static int ht_setup_chains_x(void) for(nodeid=0; nodeid