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mn10300/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: David Howells <dhowells@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2012-02-23 20:19:02 -07:00
parent 96a6b9ad05
commit 4b84b6e9b4
2 changed files with 10 additions and 68 deletions
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16
arch/mn10300/include/asm/pci.h
View File

@ -85,21 +85,7 @@ extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
/* implement the pci_ DMA API in terms of the generic device dma_ one */
#include <asm-generic/pci-dma-compat.h>
/**
* pcibios_resource_to_bus - convert resource to PCI bus address
* @dev: device which owns this resource
* @region: converted bus-centric region (start,end)
* @res: resource to convert
*
* Convert a resource to a PCI device bus address or bus window.
*/
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
static inline struct resource *
pcibios_select_root(struct pci_dev *pdev, struct resource *res)

62
arch/mn10300/unit-asb2305/pci.c
View File

@ -32,8 +32,7 @@ struct pci_ops *pci_root_ops;
* insert specific PCI bus resources instead of using the platform-level bus
* resources directly for the PCI root bus.
*
* These are configured and inserted by pcibios_init() and are attached to the
* root bus by pcibios_fixup_bus().
* These are configured and inserted by pcibios_init().
*/
static struct resource pci_ioport_resource = {
.name = "PCI IO",
@ -77,52 +76,6 @@ static inline int __query(const struct pci_bus *bus, unsigned int devfn)
return 1;
}
/*
* translate Linuxcentric addresses to PCI bus addresses
*/
void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
struct resource *res)
{
if (res->flags & IORESOURCE_IO) {
region->start = (res->start & 0x00ffffff);
region->end = (res->end & 0x00ffffff);
}
if (res->flags & IORESOURCE_MEM) {
region->start = (res->start & 0x03ffffff) | MEM_PAGING_REG;
region->end = (res->end & 0x03ffffff) | MEM_PAGING_REG;
}
#if 0
printk(KERN_DEBUG "RES->BUS: %lx-%lx => %lx-%lx\n",
res->start, res->end, region->start, region->end);
#endif
}
EXPORT_SYMBOL(pcibios_resource_to_bus);
/*
* translate PCI bus addresses to Linuxcentric addresses
*/
void pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region)
{
if (res->flags & IORESOURCE_IO) {
res->start = (region->start & 0x00ffffff) | 0xbe000000;
res->end = (region->end & 0x00ffffff) | 0xbe000000;
}
if (res->flags & IORESOURCE_MEM) {
res->start = (region->start & 0x03ffffff) | 0xb8000000;
res->end = (region->end & 0x03ffffff) | 0xb8000000;
}
#if 0
printk(KERN_INFO "BUS->RES: %lx-%lx => %lx-%lx\n",
region->start, region->end, res->start, res->end);
#endif
}
EXPORT_SYMBOL(pcibios_bus_to_resource);
/*
*
*/
@ -364,9 +317,6 @@ static void __devinit pcibios_fixup_device_resources(struct pci_dev *dev)
if (!dev->resource[i].flags)
continue;
region.start = dev->resource[i].start;
region.end = dev->resource[i].end;
pcibios_bus_to_resource(dev, &dev->resource[i], &region);
if (is_valid_resource(dev, i))
pci_claim_resource(dev, i);
}
@ -397,6 +347,7 @@ void __devinit pcibios_fixup_bus(struct pci_bus *bus)
*/
static int __init pcibios_init(void)
{
resource_size_t io_offset, mem_offset;
LIST_HEAD(resources);
ioport_resource.start = 0xA0000000;
@ -420,8 +371,13 @@ static int __init pcibios_init(void)
printk(KERN_INFO "PCI: Probing PCI hardware [mempage %08x]\n",
MEM_PAGING_REG);
pci_add_resource(&resources, &pci_ioport_resource);
pci_add_resource(&resources, &pci_iomem_resource);
io_offset = pci_ioport_resource.start -
(pci_ioport_resource.start & 0x00ffffff);
mem_offset = pci_iomem_resource.start -
((pci_iomem_resource.start & 0x03ffffff) | MEM_PAGING_REG);
pci_add_resource_offset(&resources, &pci_ioport_resource, io_offset);
pci_add_resource_offset(&resources, &pci_iomem_resource, mem_offset);
pci_root_bus = pci_scan_root_bus(NULL, 0, &pci_direct_ampci, NULL,
&resources);