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powerpc/PCI: compute I/O space bus-to-resource offset consistently

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Make sure we compute CPU addresses (resource start/end) the same way both
when we set up the I/O aperture (hose->io_resource) and when we use
pcibios_bus_to_resource() to convert BAR values into resources.

This fixes a build failure ("cast from pointer to integer of different
size" in configs where resource_size_t is 64 bits but pointers are 32 bits)
I introduced in 6c5705fec6.

Acked-By: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Bjorn Helgaas 2012-03-16 17:48:09 -06:00 committed by Jesse Barnes
parent d85c6d97d3
commit 38973ba790
4 changed files with 11 additions and 6 deletions
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1
arch/powerpc/include/asm/pci.h
View File

@ -182,6 +182,7 @@ extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
const struct resource *rsrc,
resource_size_t *start, resource_size_t *end);
extern resource_size_t pcibios_io_space_offset(struct pci_controller *hose);
extern void pcibios_setup_bus_devices(struct pci_bus *bus);
extern void pcibios_setup_bus_self(struct pci_bus *bus);
extern void pcibios_setup_phb_io_space(struct pci_controller *hose);

8
arch/powerpc/kernel/pci-common.c
View File

@ -1492,6 +1492,11 @@ int pcibios_enable_device(struct pci_dev *dev, int mask)
return pci_enable_resources(dev, mask);
}
resource_size_t pcibios_io_space_offset(struct pci_controller *hose)
{
return (unsigned long) hose->io_base_virt - _IO_BASE;
}
static void __devinit pcibios_setup_phb_resources(struct pci_controller *hose, struct list_head *resources)
{
struct resource *res;
@ -1516,8 +1521,7 @@ static void __devinit pcibios_setup_phb_resources(struct pci_controller *hose, s
(unsigned long long)res->start,
(unsigned long long)res->end,
(unsigned long)res->flags);
pci_add_resource_offset(resources, res,
(resource_size_t) hose->io_base_virt - _IO_BASE);
pci_add_resource_offset(resources, res, pcibios_io_space_offset(hose));
/* Hookup PHB Memory resources */
for (i = 0; i < 3; ++i) {

6
arch/powerpc/kernel/pci_32.c
View File

@ -219,9 +219,9 @@ void __devinit pcibios_setup_phb_io_space(struct pci_controller *hose)
struct resource *res = &hose->io_resource;
/* Fixup IO space offset */
io_offset = (unsigned long)hose->io_base_virt - isa_io_base;
res->start = (res->start + io_offset) & 0xffffffffu;
res->end = (res->end + io_offset) & 0xffffffffu;
io_offset = pcibios_io_space_offset(hose);
res->start += io_offset;
res->end += io_offset;
}
static int __init pcibios_init(void)

2
arch/powerpc/kernel/pci_64.c
View File

@ -168,7 +168,7 @@ static int __devinit pcibios_map_phb_io_space(struct pci_controller *hose)
return -ENOMEM;
/* Fixup hose IO resource */
io_virt_offset = (unsigned long)hose->io_base_virt - _IO_BASE;
io_virt_offset = pcibios_io_space_offset(hose);
hose->io_resource.start += io_virt_offset;
hose->io_resource.end += io_virt_offset;