diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/device/pci_device.c | 119 |
1 files changed, 65 insertions, 54 deletions
diff --git a/src/device/pci_device.c b/src/device/pci_device.c index 5f50a31460..9011f0da4b 100644 --- a/src/device/pci_device.c +++ b/src/device/pci_device.c @@ -444,10 +444,70 @@ void pci_domain_set_resources(struct device *dev) assign_resources(dev->link_list); } -static void pci_set_resource(struct device *dev, struct resource *resource) +static void pci_store_resource(const struct device *const dev, + const struct resource *const resource) +{ + unsigned long base_lo, base_hi; + + base_lo = resource->base & 0xffffffff; + base_hi = (resource->base >> 32) & 0xffffffff; + + /* + * Some chipsets allow us to set/clear the I/O bit + * (e.g. VIA 82C686A). So set it to be safe. + */ + if (resource->flags & IORESOURCE_IO) + base_lo |= PCI_BASE_ADDRESS_SPACE_IO; + + pci_write_config32(dev, resource->index, base_lo); + if (resource->flags & IORESOURCE_PCI64) + pci_write_config32(dev, resource->index + 4, base_hi); +} + +static void pci_store_bridge_resource(const struct device *const dev, + struct resource *const resource) { resource_t base, end; + /* + * PCI bridges have no enable bit. They are disabled if the base of + * the range is greater than the limit. If the size is zero, disable + * by setting the base = limit and end = limit - 2^gran. + */ + if (resource->size == 0) { + base = resource->limit; + end = resource->limit - (1 << resource->gran); + resource->base = base; + } else { + base = resource->base; + end = resource_end(resource); + } + + if (resource->index == PCI_IO_BASE) { + /* Set the I/O ranges. */ + pci_write_config8(dev, PCI_IO_BASE, base >> 8); + pci_write_config16(dev, PCI_IO_BASE_UPPER16, base >> 16); + pci_write_config8(dev, PCI_IO_LIMIT, end >> 8); + pci_write_config16(dev, PCI_IO_LIMIT_UPPER16, end >> 16); + } else if (resource->index == PCI_MEMORY_BASE) { + /* Set the memory range. */ + pci_write_config16(dev, PCI_MEMORY_BASE, base >> 16); + pci_write_config16(dev, PCI_MEMORY_LIMIT, end >> 16); + } else if (resource->index == PCI_PREF_MEMORY_BASE) { + /* Set the prefetchable memory range. */ + pci_write_config16(dev, PCI_PREF_MEMORY_BASE, base >> 16); + pci_write_config32(dev, PCI_PREF_BASE_UPPER32, base >> 32); + pci_write_config16(dev, PCI_PREF_MEMORY_LIMIT, end >> 16); + pci_write_config32(dev, PCI_PREF_LIMIT_UPPER32, end >> 32); + } else { + /* Don't let me think I stored the resource. */ + resource->flags &= ~IORESOURCE_STORED; + printk(BIOS_ERR, "ERROR: invalid resource->index %lx\n", resource->index); + } +} + +static void pci_set_resource(struct device *dev, struct resource *resource) +{ /* Make certain the resource has actually been assigned a value. */ if (!(resource->flags & IORESOURCE_ASSIGNED)) { printk(BIOS_ERR, "ERROR: %s %02lx %s size: 0x%010llx not " @@ -482,62 +542,13 @@ static void pci_set_resource(struct device *dev, struct resource *resource) dev->command |= PCI_COMMAND_MASTER; } - /* Get the base address. */ - base = resource->base; - - /* Get the end. */ - end = resource_end(resource); - /* Now store the resource. */ resource->flags |= IORESOURCE_STORED; - /* - * PCI bridges have no enable bit. They are disabled if the base of - * the range is greater than the limit. If the size is zero, disable - * by setting the base = limit and end = limit - 2^gran. - */ - if (resource->size == 0 && (resource->flags & IORESOURCE_PCI_BRIDGE)) { - base = resource->limit; - end = resource->limit - (1 << resource->gran); - resource->base = base; - } - - if (!(resource->flags & IORESOURCE_PCI_BRIDGE)) { - unsigned long base_lo, base_hi; - - /* - * Some chipsets allow us to set/clear the I/O bit - * (e.g. VIA 82C686A). So set it to be safe. - */ - base_lo = base & 0xffffffff; - base_hi = (base >> 32) & 0xffffffff; - if (resource->flags & IORESOURCE_IO) - base_lo |= PCI_BASE_ADDRESS_SPACE_IO; - pci_write_config32(dev, resource->index, base_lo); - if (resource->flags & IORESOURCE_PCI64) - pci_write_config32(dev, resource->index + 4, base_hi); - } else if (resource->index == PCI_IO_BASE) { - /* Set the I/O ranges. */ - pci_write_config8(dev, PCI_IO_BASE, base >> 8); - pci_write_config16(dev, PCI_IO_BASE_UPPER16, base >> 16); - pci_write_config8(dev, PCI_IO_LIMIT, end >> 8); - pci_write_config16(dev, PCI_IO_LIMIT_UPPER16, end >> 16); - } else if (resource->index == PCI_MEMORY_BASE) { - /* Set the memory range. */ - pci_write_config16(dev, PCI_MEMORY_BASE, base >> 16); - pci_write_config16(dev, PCI_MEMORY_LIMIT, end >> 16); - } else if (resource->index == PCI_PREF_MEMORY_BASE) { - /* Set the prefetchable memory range. */ - pci_write_config16(dev, PCI_PREF_MEMORY_BASE, base >> 16); - pci_write_config32(dev, PCI_PREF_BASE_UPPER32, base >> 32); - pci_write_config16(dev, PCI_PREF_MEMORY_LIMIT, end >> 16); - pci_write_config32(dev, PCI_PREF_LIMIT_UPPER32, end >> 32); - } else { - /* Don't let me think I stored the resource. */ - resource->flags &= ~IORESOURCE_STORED; - printk(BIOS_ERR, "ERROR: invalid resource->index %lx\n", - resource->index); - } + if (resource->flags & IORESOURCE_PCI_BRIDGE) + pci_store_bridge_resource(dev, resource); + else + pci_store_resource(dev, resource); report_resource_stored(dev, resource, ""); } |