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drm/radeon: save/restore the PD addr on suspend/resume

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This fixes a problem with GPU resets and TLB flushes on SI/CIK.

Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König
2014-08-26 14:45:54 +02:00
committed by Alex Deucher
parent a284e9d14e
commit 054e01d681
4 changed files with 37 additions and 9 deletions
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20
drivers/gpu/drm/radeon/cik.c
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@@ -5749,20 +5749,17 @@ static int cik_pcie_gart_enable(struct radeon_device *rdev)
WREG32(0x15D8, 0);
WREG32(0x15DC, 0);
/* empty context1-15 */
/* FIXME start with 4G, once using 2 level pt switch to full
* vm size space
*/
/* restore context1-15 */
/* set vm size, must be a multiple of 4 */
WREG32(VM_CONTEXT1_PAGE_TABLE_START_ADDR, 0);
WREG32(VM_CONTEXT1_PAGE_TABLE_END_ADDR, rdev->vm_manager.max_pfn);
for (i = 1; i < 16; i++) {
if (i < 8)
WREG32(VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (i << 2),
rdev->gart.table_addr >> 12);
rdev->vm_manager.saved_table_addr[i]);
else
WREG32(VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((i - 8) << 2),
rdev->gart.table_addr >> 12);
rdev->vm_manager.saved_table_addr[i]);
}
/* enable context1-15 */
@@ -5827,6 +5824,17 @@ static int cik_pcie_gart_enable(struct radeon_device *rdev)
*/
static void cik_pcie_gart_disable(struct radeon_device *rdev)
{
unsigned i;
for (i = 1; i < 16; ++i) {
uint32_t reg;
if (i < 8)
reg = VM_CONTEXT0_PAGE_TABLE_BASE_ADDR + (i << 2);
else
reg = VM_CONTEXT8_PAGE_TABLE_BASE_ADDR + ((i - 8) << 2);
rdev->vm_manager.saved_table_addr[i] = RREG32(reg);
}
/* Disable all tables */
WREG32(VM_CONTEXT0_CNTL, 0);
WREG32(VM_CONTEXT1_CNTL, 0);