int drm_ati_pcigart_cleanup(struct drm_device *dev, struct drm_ati_pcigart_info *gart_info)
{
/* we need to support large memory configurations */
if (dev->sg == NULL) {
DRM_ERROR("no scatter/gather memory!\n");
return 0;
}
if (gart_info->bus_addr) {
if (gart_info->gart_table_location == DRM_ATI_GART_MAIN) {
gart_info->bus_addr = 0;
if (dev->sg->dmah)
drm_ati_free_pcigart_table(dev, gart_info);
}
}
return 1;
}
int drm_ati_pcigart_cleanup(drm_device_t * dev, drm_ati_pcigart_info *gart_info)
{
drm_sg_mem_t *entry = dev->sg;
unsigned long pages;
int i;
/* we need to support large memory configurations */
if (!entry) {
DRM_ERROR("no scatter/gather memory!\n");
return 0;
}
if (gart_info->bus_addr) {
if (gart_info->gart_table_location==DRM_ATI_GART_MAIN) {
pci_unmap_single(dev->pdev, gart_info->bus_addr,
ATI_PCIGART_TABLE_PAGES * PAGE_SIZE,
PCI_DMA_TODEVICE);
}
pages = (entry->pages <= ATI_MAX_PCIGART_PAGES)
? entry->pages : ATI_MAX_PCIGART_PAGES;
for (i = 0; i < pages; i++) {
if (!entry->busaddr[i])
break;
pci_unmap_single(dev->pdev, entry->busaddr[i],
PAGE_SIZE, PCI_DMA_TODEVICE);
}
if (gart_info->gart_table_location==DRM_ATI_GART_MAIN)
gart_info->bus_addr=0;
}
if (gart_info->gart_table_location==DRM_ATI_GART_MAIN && gart_info->addr) {
drm_ati_free_pcigart_table(gart_info->addr);
gart_info->addr=0;
}
return 1;
}
int drm_ati_pcigart_init(drm_device_t * dev, drm_ati_pcigart_info *gart_info)
{
drm_sg_mem_t *entry = dev->sg;
void *address = NULL;
unsigned long pages;
u32 *pci_gart, page_base, bus_address = 0;
int i, j, ret = 0;
if (!entry) {
DRM_ERROR("no scatter/gather memory!\n");
goto done;
}
if (gart_info->gart_table_location==DRM_ATI_GART_MAIN)
{
DRM_DEBUG("PCI: no table in VRAM: using normal RAM\n");
address = drm_ati_alloc_pcigart_table();
if (!address) {
DRM_ERROR("cannot allocate PCI GART page!\n");
goto done;
}
if (!dev->pdev) {
DRM_ERROR("PCI device unknown!\n");
goto done;
}
bus_address = pci_map_single(dev->pdev, address,
ATI_PCIGART_TABLE_PAGES * PAGE_SIZE,
PCI_DMA_TODEVICE);
if (bus_address == 0) {
DRM_ERROR("unable to map PCIGART pages!\n");
drm_ati_free_pcigart_table(address);
address = 0;
goto done;
}
}
else
{
address = gart_info->addr;
bus_address = gart_info->bus_addr;
DRM_DEBUG("PCI: Gart Table: VRAM %08X mapped at %08lX\n", bus_address, (unsigned long)address);
}
pci_gart = (u32 *) address;
pages = (entry->pages <= ATI_MAX_PCIGART_PAGES)
? entry->pages : ATI_MAX_PCIGART_PAGES;
memset(pci_gart, 0, ATI_MAX_PCIGART_PAGES * sizeof(u32));
for (i = 0; i < pages; i++) {
/* we need to support large memory configurations */
entry->busaddr[i] = pci_map_single(dev->pdev,
page_address(entry->
pagelist[i]),
PAGE_SIZE, PCI_DMA_TODEVICE);
if (entry->busaddr[i] == 0) {
DRM_ERROR("unable to map PCIGART pages!\n");
drm_ati_pcigart_cleanup(dev, gart_info);
address = NULL;
bus_address = 0;
goto done;
}
page_base = (u32) entry->busaddr[i];
for (j = 0; j < (PAGE_SIZE / ATI_PCIGART_PAGE_SIZE); j++) {
if (gart_info->is_pcie)
*pci_gart = (cpu_to_le32(page_base)>>8) | 0xc;
else
*pci_gart = cpu_to_le32(page_base);
pci_gart++;
page_base += ATI_PCIGART_PAGE_SIZE;
}
}