X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=src%2Fdevices%2Fhypertransport.c;h=674971cb949a9499964647214a36b50f7c63773e;hb=14e22779625de673569c7b950ecc2753fb915b31;hp=bb912499082fe2dc00e6689f6a2a301087cc01ac;hpb=0e1e8065e303030c39c3f2c27e5d32ee58a16c66;p=coreboot.git diff --git a/src/devices/hypertransport.c b/src/devices/hypertransport.c index bb9124990..674971cb9 100644 --- a/src/devices/hypertransport.c +++ b/src/devices/hypertransport.c @@ -39,7 +39,7 @@ * so don't do it again */ #define OPT_HT_LINK 0 - + #if OPT_HT_LINK == 1 #include #endif @@ -52,9 +52,9 @@ static device_t ht_scan_get_devs(device_t *old_devices) /* Extract the chain of devices to (first through last) * for the next hypertransport device. */ - while(last && last->sibling && + while(last && last->sibling && (last->sibling->path.type == DEVICE_PATH_PCI) && - (last->sibling->path.pci.devfn > last->path.pci.devfn)) + (last->sibling->path.pci.devfn > last->path.pci.devfn)) { last = last->sibling; } @@ -101,11 +101,11 @@ static unsigned ht_read_freq_cap(device_t dev, unsigned pos) } /* AMD K8 Unsupported 1Ghz? */ if ((dev->vendor == PCI_VENDOR_ID_AMD) && (dev->device == 0x1100)) { -#if CONFIG_K8_HT_FREQ_1G_SUPPORT == 1 - #if CONFIG_K8_REV_F_SUPPORT == 0 +#if CONFIG_K8_HT_FREQ_1G_SUPPORT == 1 + #if CONFIG_K8_REV_F_SUPPORT == 0 if (is_cpu_pre_e0()) { // only e0 later suupport 1GHz HT freq_cap &= ~(1 << HT_FREQ_1000Mhz); - } + } #endif #else freq_cap &= ~(1 << HT_FREQ_1000Mhz); @@ -129,7 +129,7 @@ static int ht_setup_link(struct ht_link *prev, device_t dev, unsigned pos) static const uint8_t pow2_to_link_width[] = { 0x7, 4, 5, 0, 1, 3 }; unsigned present_width_cap, upstream_width_cap; unsigned present_freq_cap, upstream_freq_cap; - unsigned ln_present_width_in, ln_upstream_width_in; + unsigned ln_present_width_in, ln_upstream_width_in; unsigned ln_present_width_out, ln_upstream_width_out; unsigned freq, old_freq; unsigned present_width, upstream_width, old_width; @@ -140,7 +140,7 @@ static int ht_setup_link(struct ht_link *prev, device_t dev, unsigned pos) /* Set the hypertransport link width and frequency */ reset_needed = 0; - /* See which side of the device our previous write to + /* See which side of the device our previous write to * set the unitid came from. */ cur->dev = dev; @@ -164,7 +164,7 @@ static int ht_setup_link(struct ht_link *prev, device_t dev, unsigned pos) upstream_freq_cap = ht_read_freq_cap(prev->dev, prev->pos + prev->freq_cap_off); present_width_cap = pci_read_config8(cur->dev, cur->pos + cur->config_off); upstream_width_cap = pci_read_config8(prev->dev, prev->pos + prev->config_off); - + /* Calculate the highest useable frequency */ freq = log2(present_freq_cap & upstream_freq_cap); @@ -242,7 +242,7 @@ static int ht_setup_link(struct ht_link *prev, device_t dev, unsigned pos) } } #endif - + /* Remember the current link as the previous link, * But look at the other offsets. */ @@ -261,7 +261,7 @@ static int ht_setup_link(struct ht_link *prev, device_t dev, unsigned pos) } return reset_needed; - + } static unsigned ht_lookup_slave_capability(struct device *dev) @@ -355,7 +355,7 @@ static void ht_collapse_early_enumeration(struct bus *bus, unsigned offset_uniti dummy.path.type = DEVICE_PATH_PCI; dummy.path.pci.devfn = devfn; id = pci_read_config32(&dummy, PCI_VENDOR_ID); - if ( (id == 0xffffffff) || (id == 0x00000000) || + if ( (id == 0xffffffff) || (id == 0x00000000) || (id == 0x0000ffff) || (id == 0xffff0000)) { continue; } @@ -371,12 +371,12 @@ static void ht_collapse_early_enumeration(struct bus *bus, unsigned offset_uniti flags = pci_read_config16(&dummy, pos + PCI_CAP_FLAGS); flags &= ~0x1f; pci_write_config16(&dummy, pos + PCI_CAP_FLAGS, flags); - printk(BIOS_SPEW, "Collapsing %s [%04x/%04x]\n", + printk(BIOS_SPEW, "Collapsing %s [%04x/%04x]\n", dev_path(&dummy), dummy.vendor, dummy.device); } } -unsigned int hypertransport_scan_chain(struct bus *bus, +unsigned int hypertransport_scan_chain(struct bus *bus, unsigned min_devfn, unsigned max_devfn, unsigned int max, unsigned *ht_unitid_base, unsigned offset_unitid) { //even CONFIG_HT_CHAIN_UNITID_BASE == 0, we still can go through this function, because of end_of_chain check, also We need it to optimize link @@ -410,7 +410,7 @@ unsigned int hypertransport_scan_chain(struct bus *bus, prev.config_off = PCI_HT_CAP_HOST_WIDTH; prev.freq_off = PCI_HT_CAP_HOST_FREQ; prev.freq_cap_off = PCI_HT_CAP_HOST_FREQ_CAP; - + /* If present assign unitid to a hypertransport chain */ last_unitid = min_unitid -1; max_unitid = next_unitid = min_unitid; @@ -446,7 +446,7 @@ unsigned int hypertransport_scan_chain(struct bus *bus, } } } while((ctrl & (1 << 5)) == 0); - + /* Get and setup the device_structure */ dev = ht_scan_get_devs(&old_devices); @@ -462,15 +462,15 @@ unsigned int hypertransport_scan_chain(struct bus *bus, /* Find the hypertransport link capability */ pos = ht_lookup_slave_capability(dev); if (pos == 0) { - printk(BIOS_ERR, "%s Hypertransport link capability not found", + printk(BIOS_ERR, "%s Hypertransport link capability not found", dev_path(dev)); break; } - + /* Update the Unitid of the current device */ flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS); - - /* If the devices has a unitid set and is at devfn 0 we are done. + + /* If the devices has a unitid set and is at devfn 0 we are done. * This can happen with shadow hypertransport devices, * or if we have reached the bottom of a * hypertransport device chain. @@ -492,7 +492,7 @@ unsigned int hypertransport_scan_chain(struct bus *bus, } } - } + } #endif flags |= next_unitid & 0x1f; @@ -502,12 +502,12 @@ unsigned int hypertransport_scan_chain(struct bus *bus, static_count = 1; for(func = dev; func; func = func->sibling) { func->path.pci.devfn += (next_unitid << 3); - static_count = (func->path.pci.devfn >> 3) + static_count = (func->path.pci.devfn >> 3) - (dev->path.pci.devfn >> 3) + 1; last_func = func; } /* Compute the number of unitids consumed */ - printk(BIOS_SPEW, "%s count: %04x static_count: %04x\n", + printk(BIOS_SPEW, "%s count: %04x static_count: %04x\n", dev_path(dev), count, static_count); if (count < static_count) { count = static_count; @@ -534,7 +534,7 @@ unsigned int hypertransport_scan_chain(struct bus *bus, printk(BIOS_DEBUG, "%s [%04x/%04x] %s next_unitid: %04x\n", dev_path(dev), - dev->vendor, dev->device, + dev->vendor, dev->device, (dev->enabled? "enabled": "disabled"), next_unitid); } while (last_unitid != next_unitid); @@ -562,7 +562,7 @@ unsigned int hypertransport_scan_chain(struct bus *bus, } ht_unitid_base[ht_dev_num-1] = CONFIG_HT_CHAIN_END_UNITID_BASE; // update last one - + printk(BIOS_DEBUG, " unitid: %04x --> %04x\n", real_last_unitid, CONFIG_HT_CHAIN_END_UNITID_BASE); @@ -573,11 +573,11 @@ unsigned int hypertransport_scan_chain(struct bus *bus, if (next_unitid > 0x20) { next_unitid = 0x20; } - if( (bus->secondary == 0) && (next_unitid > 0x18)) { + if( (bus->secondary == 0) && (next_unitid > 0x18)) { next_unitid = 0x18; /* avoid K8 on bus 0 */ } - /* Die if any leftover Static devices are are found. + /* Die if any leftover Static devices are are found. * There's probably a problem in the Config.lb. */ if(old_devices) { @@ -587,14 +587,14 @@ unsigned int hypertransport_scan_chain(struct bus *bus, } printk(BIOS_ERR, "HT: Left over static devices. Check your Config.lb\n"); if(last_func && !last_func->sibling) // put back the left over static device, and let pci_scan_bus disable it - last_func->sibling = old_devices; + last_func->sibling = old_devices; } /* Now that nothing is overlapping it is safe to scan the - * children. + * children. */ - max = pci_scan_bus(bus, 0x00, ((next_unitid-1) << 3)|7, max); - return max; + max = pci_scan_bus(bus, 0x00, ((next_unitid-1) << 3)|7, max); + return max; } /**