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authorJohn Keller <jpk@sgi.com>2007-07-09 11:42:24 -0700
committerTony Luck <tony.luck@intel.com>2007-07-09 13:37:18 -0700
commitd7ad2254fa7cc11aec3faeba076c1243f6adeb47 (patch)
tree900c05b11a3a44f19618701172ffb5f51ecdeb99 /arch/ia64
parent83ce6ef8408bbc7d9322ab50ba592f83012dea94 (diff)
downloadlinux-2.6.34-ux500-d7ad2254fa7cc11aec3faeba076c1243f6adeb47.tar.gz
[IA64] SN: Correct ROM resource length for BIOS copy
On SN systems, when setting the IORESOURCE_ROM_BIOS_COPY resource flag, the resource length should be set to the actual size of the ROM image so that a call to pci_map_rom() returns the correct size. Signed-off-by: John Keller <jpk@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/sn/kernel/io_acpi_init.c17
-rw-r--r--arch/ia64/sn/kernel/io_init.c20
2 files changed, 25 insertions, 12 deletions
diff --git a/arch/ia64/sn/kernel/io_acpi_init.c b/arch/ia64/sn/kernel/io_acpi_init.c
index c6216f454ff..3c7178f5dce 100644
--- a/arch/ia64/sn/kernel/io_acpi_init.c
+++ b/arch/ia64/sn/kernel/io_acpi_init.c
@@ -418,7 +418,7 @@ sn_acpi_slot_fixup(struct pci_dev *dev)
void __iomem *addr;
struct pcidev_info *pcidev_info = NULL;
struct sn_irq_info *sn_irq_info = NULL;
- size_t size;
+ size_t image_size, size;
if (sn_acpi_get_pcidev_info(dev, &pcidev_info, &sn_irq_info)) {
panic("%s: Failure obtaining pcidev_info for %s\n",
@@ -428,17 +428,16 @@ sn_acpi_slot_fixup(struct pci_dev *dev)
if (pcidev_info->pdi_pio_mapped_addr[PCI_ROM_RESOURCE]) {
/*
* A valid ROM image exists and has been shadowed by the
- * PROM. Setup the pci_dev ROM resource to point to
- * the shadowed copy.
+ * PROM. Setup the pci_dev ROM resource with the address
+ * of the shadowed copy, and the actual length of the ROM image.
*/
- size = dev->resource[PCI_ROM_RESOURCE].end -
- dev->resource[PCI_ROM_RESOURCE].start;
- addr =
- ioremap(pcidev_info->pdi_pio_mapped_addr[PCI_ROM_RESOURCE],
- size);
+ size = pci_resource_len(dev, PCI_ROM_RESOURCE);
+ addr = ioremap(pcidev_info->pdi_pio_mapped_addr[PCI_ROM_RESOURCE],
+ size);
+ image_size = pci_get_rom_size(addr, size);
dev->resource[PCI_ROM_RESOURCE].start = (unsigned long) addr;
dev->resource[PCI_ROM_RESOURCE].end =
- (unsigned long) addr + size;
+ (unsigned long) addr + image_size - 1;
dev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_BIOS_COPY;
}
sn_pci_fixup_slot(dev, pcidev_info, sn_irq_info);
diff --git a/arch/ia64/sn/kernel/io_init.c b/arch/ia64/sn/kernel/io_init.c
index 6b10e5d2848..906b93674b7 100644
--- a/arch/ia64/sn/kernel/io_init.c
+++ b/arch/ia64/sn/kernel/io_init.c
@@ -259,9 +259,23 @@ sn_io_slot_fixup(struct pci_dev *dev)
insert_resource(&ioport_resource, &dev->resource[idx]);
else
insert_resource(&iomem_resource, &dev->resource[idx]);
- /* If ROM, mark as shadowed in PROM */
- if (idx == PCI_ROM_RESOURCE)
- dev->resource[idx].flags |= IORESOURCE_ROM_BIOS_COPY;
+ /*
+ * If ROM, set the actual ROM image size, and mark as
+ * shadowed in PROM.
+ */
+ if (idx == PCI_ROM_RESOURCE) {
+ size_t image_size;
+ void __iomem *rom;
+
+ rom = ioremap(pci_resource_start(dev, PCI_ROM_RESOURCE),
+ size + 1);
+ image_size = pci_get_rom_size(rom, size + 1);
+ dev->resource[PCI_ROM_RESOURCE].end =
+ dev->resource[PCI_ROM_RESOURCE].start +
+ image_size - 1;
+ dev->resource[PCI_ROM_RESOURCE].flags |=
+ IORESOURCE_ROM_BIOS_COPY;
+ }
}
/* Create a pci_window in the pci_controller struct for
* each device resource.