This fixes the following breakage of the commit
75f1cdf1dda92cae037ec848ae63690d91913eac:
- GART systems that don't AGP with broken BIOS and more than 4GB
memory are forced to use swiotlb. They can allocate aperture by
hand and use GART.
- GART systems without GAP must disable GART on shutdown.
- swiotlb usage is forced by the boot option,
gart_iommu_hole_init() is not called, so we disable GART
early_gart_iommu_check().
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
LKML-Reference: <
1260759135-6450-3-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
* or BIOS forget to put that in reserved.
* try to update e820 to make that region as reserved.
*/
* or BIOS forget to put that in reserved.
* try to update e820 to make that region as reserved.
*/
+ u32 agp_aper_base = 0, agp_aper_order = 0;
+ int i, fix, slot, valid_agp = 0;
u32 ctl;
u32 aper_size = 0, aper_order = 0, last_aper_order = 0;
u64 aper_base = 0, last_aper_base = 0;
u32 ctl;
u32 aper_size = 0, aper_order = 0, last_aper_order = 0;
u64 aper_base = 0, last_aper_base = 0;
return;
/* This is mostly duplicate of iommu_hole_init */
return;
/* This is mostly duplicate of iommu_hole_init */
+ agp_aper_base = search_agp_bridge(&agp_aper_order, &valid_agp);
+
fix = 0;
for (i = 0; i < ARRAY_SIZE(bus_dev_ranges); i++) {
int bus;
fix = 0;
for (i = 0; i < ARRAY_SIZE(bus_dev_ranges); i++) {
int bus;
- /* different nodes have different setting, disable them all at first*/
+ /* disable them all at first */
for (i = 0; i < ARRAY_SIZE(bus_dev_ranges); i++) {
int bus;
int dev_base, dev_limit;
for (i = 0; i < ARRAY_SIZE(bus_dev_ranges); i++) {
int bus;
int dev_base, dev_limit;
if (aper_alloc) {
/* Got the aperture from the AGP bridge */
if (aper_alloc) {
/* Got the aperture from the AGP bridge */
- } else if (!valid_agp) {
- /* Do nothing */
} else if ((!no_iommu && max_pfn > MAX_DMA32_PFN) ||
force_iommu ||
valid_agp ||
} else if ((!no_iommu && max_pfn > MAX_DMA32_PFN) ||
force_iommu ||
valid_agp ||
struct pci_dev *dev;
int i;
struct pci_dev *dev;
int i;
+ /* don't shutdown it if there is AGP installed */
+ if (!no_agp)
return;
for (i = 0; i < num_k8_northbridges; i++) {
return;
for (i = 0; i < num_k8_northbridges; i++) {