[PATCH 019/165] drm/radeon/cik: log and handle VM page fault interrupts

[alexdeucher at gmail.com]

From: Alex Deucher <alexander.deucher at amd.com>

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/radeon/cik.c  |   10 ++++++++++
 drivers/gpu/drm/radeon/cikd.h |    4 ++++
 2 files changed, 14 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
index 72c7e83..b70f017 100644
--- a/drivers/gpu/drm/radeon/cik.c
+++ b/drivers/gpu/drm/radeon/cik.c
@@ -3676,6 +3676,16 @@ restart_ih:
 				break;
 			}
 			break;
+		case 146:
+		case 147:
+			dev_err(rdev->dev, "GPU fault detected: %d 0x%08x\n", src_id, src_data);
+			dev_err(rdev->dev, "  VM_CONTEXT1_PROTECTION_FAULT_ADDR   0x%08X\n",
+				RREG32(VM_CONTEXT1_PROTECTION_FAULT_ADDR));
+			dev_err(rdev->dev, "  VM_CONTEXT1_PROTECTION_FAULT_STATUS 0x%08X\n",
+				RREG32(VM_CONTEXT1_PROTECTION_FAULT_STATUS));
+			/* reset addr and status */
+			WREG32_P(VM_CONTEXT1_CNTL2, 1, ~1);
+			break;
 		case 176: /* GFX RB CP_INT */
 		case 177: /* GFX IB CP_INT */
 			radeon_fence_process(rdev, RADEON_RING_TYPE_GFX_INDEX);
diff --git a/drivers/gpu/drm/radeon/cikd.h b/drivers/gpu/drm/radeon/cikd.h
index a282168..cc4f28e 100644
--- a/drivers/gpu/drm/radeon/cikd.h
+++ b/drivers/gpu/drm/radeon/cikd.h
@@ -95,6 +95,10 @@
 #define VM_INVALIDATE_REQUEST				0x1478
 #define VM_INVALIDATE_RESPONSE				0x147c
 
+#define	VM_CONTEXT1_PROTECTION_FAULT_STATUS		0x14DC
+
+#define	VM_CONTEXT1_PROTECTION_FAULT_ADDR		0x14FC
+
 #define VM_CONTEXT0_PROTECTION_FAULT_DEFAULT_ADDR	0x1518
 #define VM_CONTEXT1_PROTECTION_FAULT_DEFAULT_ADDR	0x151c
 
-- 
1.7.7.5