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ati_pcigart: split out the page insert function

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This commit is contained in:
Dave Airlie 2008-06-10 16:27:50 +10:00
parent 4b8aecbde8
commit cdd0cb0ab3
1 changed files with 23 additions and 16 deletions
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39
linux-core/ati_pcigart.c
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@ -39,6 +39,28 @@
#define ATI_PCIE_WRITE 0x4
#define ATI_PCIE_READ 0x8
static __inline__ void gart_insert_page_into_table(struct drm_ati_pcigart_info *gart_info, dma_addr_t addr, u32 *pci_gart)
{
u32 page_base;
page_base = (u32)addr & ATI_PCIGART_PAGE_MASK;
switch(gart_info->gart_reg_if) {
case DRM_ATI_GART_IGP:
page_base |= (upper_32_bits(addr) & 0xff) << 4;
page_base |= 0xc;
break;
case DRM_ATI_GART_PCIE:
page_base >>= 8;
page_base |= (upper_32_bits(addr) & 0xff) << 24;
page_base |= ATI_PCIE_READ | ATI_PCIE_WRITE;
break;
default:
case DRM_ATI_GART_PCI:
break;
}
*pci_gart = cpu_to_le32(page_base);
}
static int drm_ati_alloc_pcigart_table(struct drm_device *dev,
struct drm_ati_pcigart_info *gart_info)
{
@ -155,22 +177,7 @@ int drm_ati_pcigart_init(struct drm_device *dev, struct drm_ati_pcigart_info *ga
entry_addr = entry->busaddr[i];
for (j = 0; j < (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE); j++) {
page_base = (u32) entry_addr & ATI_PCIGART_PAGE_MASK;
switch(gart_info->gart_reg_if) {
case DRM_ATI_GART_IGP:
page_base |= (upper_32_bits(entry_addr) & 0xff) << 4;
page_base |= 0xc;
break;
case DRM_ATI_GART_PCIE:
page_base >>= 8;
page_base |= (upper_32_bits(entry_addr) & 0xff) << 24;
page_base |= ATI_PCIE_READ | ATI_PCIE_WRITE;
break;
default:
case DRM_ATI_GART_PCI:
break;
}
*pci_gart = cpu_to_le32(page_base);
gart_insert_page_into_table(gart_info, entry_addr, pci_gart);
pci_gart++;
entry_addr += ATI_PCIGART_PAGE_SIZE;
}