v2: Rebased upon cleaned up error state

Cc: Chris Wilson <ch...@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <b...@bwidawsk.net>
---
 drivers/gpu/drm/i915/i915_drv.h       |  9 ++++++++
 drivers/gpu/drm/i915/i915_gpu_error.c | 39 +++++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index a144bc3..1712ecc 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -360,6 +360,14 @@ struct drm_i915_error_state {
                        u32 seqno;
                        u32 tail;
                } *requests;
+
+               struct {
+                       u32 gfx_mode;
+                       union {
+                               u64 pdp[4];
+                               u32 pp_dir_base;
+                       };
+               } vm_info;
        } ring[I915_NUM_RINGS];
 
        struct drm_i915_error_buffer {
@@ -377,6 +385,7 @@ struct drm_i915_error_state {
                s32 ring:4;
                u32 cache_level:3;
        } **active_bo, **pinned_bo;
+
        u32 *active_bo_count, *pinned_bo_count;
        u32 vm_count;
 };
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c 
b/drivers/gpu/drm/i915/i915_gpu_error.c
index 2ef0566..7fea86d 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -277,6 +277,21 @@ static void i915_ring_error_state(struct 
drm_i915_error_state_buf *m,
        err_printf(m, "  hangcheck: %s [%d]\n",
                   hangcheck_action_to_str(ring->hangcheck_action),
                   ring->hangcheck_score);
+
+       if (USES_PPGTT(dev)) {
+               err_printf(m, "  GFX_MODE: 0x%08x\n", ring->vm_info.gfx_mode);
+
+               if (INTEL_INFO(dev)->gen >= 8) {
+                       int i;
+                       for (i = 0; i < 4; i++)
+                               err_printf(m, "  PDP%d: 0x%016llx\n",
+                                          i, ring->vm_info.pdp[i]);
+               } else {
+                       err_printf(m, "  PP_DIR_BASE: 0x%08x\n",
+                                  ring->vm_info.pp_dir_base);
+               }
+       }
+
 }
 
 void i915_error_printf(struct drm_i915_error_state_buf *e, const char *f, ...)
@@ -847,6 +862,30 @@ static void i915_record_ring_state(struct drm_device *dev,
 
        ering->hangcheck_score = ring->hangcheck.score;
        ering->hangcheck_action = ring->hangcheck.action;
+
+       if (USES_PPGTT(dev)) {
+               int i;
+
+               ering->vm_info.gfx_mode = I915_READ(RING_MODE_GEN7(ring));
+
+               switch (INTEL_INFO(dev)->gen) {
+               case 8:
+                       for (i = 0; i < 4; i++) {
+                               ering->vm_info.pdp[i] =
+                                       I915_READ(GEN8_RING_PDP_UDW(ring, i));
+                               ering->vm_info.pdp[i] <<= 32;
+                               ering->vm_info.pdp[i] |=
+                                       I915_READ(GEN8_RING_PDP_LDW(ring, i));
+                       }
+                       break;
+               case 7:
+                       ering->vm_info.pp_dir_base = RING_PP_DIR_BASE(ring);
+                       break;
+               case 6:
+                       ering->vm_info.pp_dir_base = 
RING_PP_DIR_BASE_READ(ring);
+                       break;
+               }
+       }
 }
 
 
-- 
1.8.5.3

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