diff options
Diffstat (limited to 'src/northbridge')
| -rw-r--r-- | src/northbridge/intel/sandybridge/northbridge.c | 104 |
1 files changed, 48 insertions, 56 deletions
diff --git a/src/northbridge/intel/sandybridge/northbridge.c b/src/northbridge/intel/sandybridge/northbridge.c index 7a6372c207..c1cdea5428 100644 --- a/src/northbridge/intel/sandybridge/northbridge.c +++ b/src/northbridge/intel/sandybridge/northbridge.c @@ -71,6 +71,34 @@ static int get_pcie_bar(u32 *base) return 0; } +static const char *northbridge_acpi_name(const struct device *dev) +{ + if (dev->path.type == DEVICE_PATH_DOMAIN) + return "PCI0"; + + if (dev->path.type != DEVICE_PATH_PCI) + return NULL; + + switch (dev->path.pci.devfn) { + case PCI_DEVFN(0, 0): + return "MCHC"; + } + + return NULL; +} + +/* + * TODO We could determine how many PCIe busses we need in the bar. + * For now, that number is hardcoded to a max of 64. + */ +static struct device_operations pci_domain_ops = { + .read_resources = pci_domain_read_resources, + .set_resources = pci_domain_set_resources, + .scan_bus = pci_domain_scan_bus, + .write_acpi_tables = northbridge_write_acpi_tables, + .acpi_name = northbridge_acpi_name, +}; + static void add_fixed_resources(struct device *dev, int index) { mmio_resource(dev, index++, uma_memory_base >> 10, uma_memory_size >> 10); @@ -99,13 +127,23 @@ static void add_fixed_resources(struct device *dev, int index) } } -static void pci_domain_set_resources_sandybridge(struct device *dev) +static void mc_read_resources(struct device *dev) { + u32 pcie_config_base; + int buses; uint64_t tom, me_base, touud; uint32_t tseg_base, uma_size, tolud; uint16_t ggc; unsigned long long tomk; + pci_dev_read_resources(dev); + + buses = get_pcie_bar(&pcie_config_base); + if (buses) { + struct resource *resource = new_resource(dev, PCIEXBAR); + mmconf_resource_init(resource, pcie_config_base, buses); + } + /* Total Memory 2GB example: * * 00000000 0000MB-1992MB 1992MB RAM (writeback) @@ -132,28 +170,26 @@ static void pci_domain_set_resources_sandybridge(struct device *dev) * 14fe00000 5368MB TOUUD */ - struct device *mch = pcidev_on_root(0, 0); - /* Top of Upper Usable DRAM, including remap */ - touud = pci_read_config32(mch, TOUUD + 4); + touud = pci_read_config32(dev, TOUUD + 4); touud <<= 32; - touud |= pci_read_config32(mch, TOUUD); + touud |= pci_read_config32(dev, TOUUD); /* Top of Lower Usable DRAM */ - tolud = pci_read_config32(mch, TOLUD); + tolud = pci_read_config32(dev, TOLUD); /* Top of Memory - does not account for any UMA */ - tom = pci_read_config32(mch, TOM + 4); + tom = pci_read_config32(dev, TOM + 4); tom <<= 32; - tom |= pci_read_config32(mch, TOM); + tom |= pci_read_config32(dev, TOM); printk(BIOS_DEBUG, "TOUUD 0x%llx TOLUD 0x%08x TOM 0x%llx\n", touud, tolud, tom); /* ME UMA needs excluding if total memory < 4GB */ - me_base = pci_read_config32(mch, MESEG_BASE + 4); + me_base = pci_read_config32(dev, MESEG_BASE + 4); me_base <<= 32; - me_base |= pci_read_config32(mch, MESEG_BASE); + me_base |= pci_read_config32(dev, MESEG_BASE); printk(BIOS_DEBUG, "MEBASE 0x%llx\n", me_base); @@ -172,7 +208,7 @@ static void pci_domain_set_resources_sandybridge(struct device *dev) } /* Graphics memory comes next */ - ggc = pci_read_config16(mch, GGC); + ggc = pci_read_config16(dev, GGC); if (!(ggc & 2)) { printk(BIOS_DEBUG, "IGD decoded, subtracting "); @@ -192,7 +228,7 @@ static void pci_domain_set_resources_sandybridge(struct device *dev) } /* Calculate TSEG size from its base which must be below GTT */ - tseg_base = pci_read_config32(mch, TSEGMB); + tseg_base = pci_read_config32(dev, TSEGMB); uma_size = (uma_memory_base - tseg_base) >> 10; tomk -= uma_size; uma_memory_base = tomk * 1024ULL; @@ -217,50 +253,6 @@ static void pci_domain_set_resources_sandybridge(struct device *dev) } add_fixed_resources(dev, 6); - - assign_resources(dev->link_list); -} - -static const char *northbridge_acpi_name(const struct device *dev) -{ - if (dev->path.type == DEVICE_PATH_DOMAIN) - return "PCI0"; - - if (dev->path.type != DEVICE_PATH_PCI) - return NULL; - - switch (dev->path.pci.devfn) { - case PCI_DEVFN(0, 0): - return "MCHC"; - } - - return NULL; -} - -/* - * TODO We could determine how many PCIe busses we need in the bar. - * For now, that number is hardcoded to a max of 64. - */ -static struct device_operations pci_domain_ops = { - .read_resources = pci_domain_read_resources, - .set_resources = pci_domain_set_resources_sandybridge, - .scan_bus = pci_domain_scan_bus, - .write_acpi_tables = northbridge_write_acpi_tables, - .acpi_name = northbridge_acpi_name, -}; - -static void mc_read_resources(struct device *dev) -{ - u32 pcie_config_base; - int buses; - - pci_dev_read_resources(dev); - - buses = get_pcie_bar(&pcie_config_base); - if (buses) { - struct resource *resource = new_resource(dev, PCIEXBAR); - mmconf_resource_init(resource, pcie_config_base, buses); - } } static void northbridge_dmi_init(struct device *dev) |