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powerpc/PCI: get rid of device resource fixups

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Tell the PCI core about host bridge address translation so it can take
care of bus-to-resource conversion for us.

CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2012-02-23 20:19:03 -07:00
parent 39c2462e16
commit 6c5705fec6
2 changed files with 6 additions and 81 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

8
arch/powerpc/include/asm/pci.h
View file

@ -154,13 +154,7 @@ extern int pci_mmap_legacy_page_range(struct pci_bus *bus,
#endif /* CONFIG_PPC64 */
extern void pcibios_resource_to_bus(struct pci_dev *dev,
struct pci_bus_region *region,
struct resource *res);
extern void pcibios_bus_to_resource(struct pci_dev *dev,
struct resource *res,
struct pci_bus_region *region);
#define ARCH_HAS_GENERIC_PCI_OFFSETS
extern void pcibios_claim_one_bus(struct pci_bus *b);

79
arch/powerpc/kernel/pci-common.c
View file

@ -846,60 +846,6 @@ int pci_proc_domain(struct pci_bus *bus)
return 1;
}
void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
struct resource *res)
{
resource_size_t offset = 0, mask = (resource_size_t)-1;
struct pci_controller *hose = pci_bus_to_host(dev->bus);
if (!hose)
return;
if (res->flags & IORESOURCE_IO) {
offset = (unsigned long)hose->io_base_virt - _IO_BASE;
mask = 0xffffffffu;
} else if (res->flags & IORESOURCE_MEM)
offset = hose->pci_mem_offset;
region->start = (res->start - offset) & mask;
region->end = (res->end - offset) & mask;
}
EXPORT_SYMBOL(pcibios_resource_to_bus);
void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region)
{
resource_size_t offset = 0, mask = (resource_size_t)-1;
struct pci_controller *hose = pci_bus_to_host(dev->bus);
if (!hose)
return;
if (res->flags & IORESOURCE_IO) {
offset = (unsigned long)hose->io_base_virt - _IO_BASE;
mask = 0xffffffffu;
} else if (res->flags & IORESOURCE_MEM)
offset = hose->pci_mem_offset;
res->start = (region->start + offset) & mask;
res->end = (region->end + offset) & mask;
}
EXPORT_SYMBOL(pcibios_bus_to_resource);
/* Fixup a bus resource into a linux resource */
static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev)
{
struct pci_controller *hose = pci_bus_to_host(dev->bus);
resource_size_t offset = 0, mask = (resource_size_t)-1;
if (res->flags & IORESOURCE_IO) {
offset = (unsigned long)hose->io_base_virt - _IO_BASE;
mask = 0xffffffffu;
} else if (res->flags & IORESOURCE_MEM)
offset = hose->pci_mem_offset;
res->start = (res->start + offset) & mask;
res->end = (res->end + offset) & mask;
}
/* This header fixup will do the resource fixup for all devices as they are
* probed, but not for bridge ranges
*/
@ -939,18 +885,11 @@ static void __devinit pcibios_fixup_resources(struct pci_dev *dev)
continue;
}
pr_debug("PCI:%s Resource %d %016llx-%016llx [%x] fixup...\n",
pr_debug("PCI:%s Resource %d %016llx-%016llx [%x]\n",
pci_name(dev), i,
(unsigned long long)res->start,\
(unsigned long long)res->end,
(unsigned int)res->flags);
fixup_resource(res, dev);
pr_debug("PCI:%s %016llx-%016llx\n",
pci_name(dev),
(unsigned long long)res->start,
(unsigned long long)res->end);
}
/* Call machine specific resource fixup */
@ -1052,27 +991,18 @@ static void __devinit pcibios_fixup_bridge(struct pci_bus *bus)
continue;
}
pr_debug("PCI:%s Bus rsrc %d %016llx-%016llx [%x] fixup...\n",
pr_debug("PCI:%s Bus rsrc %d %016llx-%016llx [%x]\n",
pci_name(dev), i,
(unsigned long long)res->start,\
(unsigned long long)res->end,
(unsigned int)res->flags);
/* Perform fixup */
fixup_resource(res, dev);
/* Try to detect uninitialized P2P bridge resources,
* and clear them out so they get re-assigned later
*/
if (pcibios_uninitialized_bridge_resource(bus, res)) {
res->flags = 0;
pr_debug("PCI:%s (unassigned)\n", pci_name(dev));
} else {
pr_debug("PCI:%s %016llx-%016llx\n",
pci_name(dev),
(unsigned long long)res->start,
(unsigned long long)res->end);
}
}
}
@ -1586,7 +1516,8 @@ 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(resources, res);
pci_add_resource_offset(resources, res,
(resource_size_t) hose->io_base_virt - _IO_BASE);
/* Hookup PHB Memory resources */
for (i = 0; i < 3; ++i) {
@ -1609,7 +1540,7 @@ 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(resources, res);
pci_add_resource_offset(resources, res, hose->pci_mem_offset);
}
pr_debug("PCI: PHB MEM offset = %016llx\n",