drm/radeon/cik: stop page faults from hanging the system (v2)
Redirect invalid memory accesses to the default page
instead of locking up the memory controller.
v2: rebase on top of 2 level PTs
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index a4e1b95..28a7531 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -1608,9 +1608,20 @@
/* enable context1-15 */
WREG32(VM_CONTEXT1_PROTECTION_FAULT_DEFAULT_ADDR,
(u32)(rdev->dummy_page.addr >> 12));
- WREG32(VM_CONTEXT1_CNTL2, 0);
+ WREG32(VM_CONTEXT1_CNTL2, 4);
WREG32(VM_CONTEXT1_CNTL, ENABLE_CONTEXT | PAGE_TABLE_DEPTH(1) |
- RANGE_PROTECTION_FAULT_ENABLE_DEFAULT);
+ RANGE_PROTECTION_FAULT_ENABLE_INTERRUPT |
+ RANGE_PROTECTION_FAULT_ENABLE_DEFAULT |
+ DUMMY_PAGE_PROTECTION_FAULT_ENABLE_INTERRUPT |
+ DUMMY_PAGE_PROTECTION_FAULT_ENABLE_DEFAULT |
+ PDE0_PROTECTION_FAULT_ENABLE_INTERRUPT |
+ PDE0_PROTECTION_FAULT_ENABLE_DEFAULT |
+ VALID_PROTECTION_FAULT_ENABLE_INTERRUPT |
+ VALID_PROTECTION_FAULT_ENABLE_DEFAULT |
+ READ_PROTECTION_FAULT_ENABLE_INTERRUPT |
+ READ_PROTECTION_FAULT_ENABLE_DEFAULT |
+ WRITE_PROTECTION_FAULT_ENABLE_INTERRUPT |
+ WRITE_PROTECTION_FAULT_ENABLE_DEFAULT);
/* TC cache setup ??? */
WREG32(TC_CFG_L1_LOAD_POLICY0, 0);