[PATCH 7/8] drm/i915: per-ring fault reg

[daniel.vetter at ffwll.ch (Daniel Vetter)]

Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/i915/i915_debugfs.c |    8 ++++++--
 drivers/gpu/drm/i915/i915_drv.h     |    2 ++
 drivers/gpu/drm/i915/i915_irq.c     |   11 ++++++++---
 drivers/gpu/drm/i915/i915_reg.h     |    3 +++
 4 files changed, 19 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 7f17921..3bdb629 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -754,8 +754,10 @@ static void i915_ring_error_state(struct seq_file *m,
 	if (INTEL_INFO(dev)->gen >= 4)
 		seq_printf(m, "  INSTPS: 0x%08x\n", error->instps[ring]);
 	seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm[ring]);
-	if (INTEL_INFO(dev)->gen >= 6)
+	if (INTEL_INFO(dev)->gen >= 6) {
 		seq_printf(m, "  FADDR: 0x%08x\n", error->faddr[ring]);
+		seq_printf(m, "  FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
+	}
 	seq_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
 }
 
@@ -788,8 +790,10 @@ static int i915_error_state(struct seq_file *m, void *unused)
 	for (i = 0; i < dev_priv->num_fence_regs; i++)
 		seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 
-	if (INTEL_INFO(dev)->gen >= 6) 
+	if (INTEL_INFO(dev)->gen >= 6) {
 		seq_printf(m, "ERROR: 0x%08x\n", error->error);
+		seq_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
+	}
 
 	i915_ring_error_state(m, dev, error, RCS);
 	if (HAS_BLT(dev))
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 2a62dab..7e39392 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -164,6 +164,8 @@ struct drm_i915_error_state {
 	u32 instdone1;
 	u32 seqno[I915_NUM_RINGS];
 	u64 bbaddr;
+	u32 fault_reg[I915_NUM_RINGS];
+	u32 done_reg;
 	u32 faddr[I915_NUM_RINGS];
 	u64 fence[I915_MAX_NUM_FENCES];
 	struct timeval time;
diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c
index c9b0766..2273df7 100644
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -882,8 +882,10 @@ static void i915_record_ring_state(struct drm_device *dev,
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
 
-	if (INTEL_INFO(dev)->gen >= 6)
+	if (INTEL_INFO(dev)->gen >= 6) {
 		error->faddr[ring->id] = I915_READ(RING_DMA_FADD(ring->mmio_base));
+		error->fault_reg[ring->id] = I915_READ(RING_FAULT_REG(ring));
+	}
 
 	if (INTEL_INFO(dev)->gen >= 4) {
 		error->ipeir[ring->id] = I915_READ(RING_IPEIR(ring->mmio_base));
@@ -946,10 +948,13 @@ static void i915_capture_error_state(struct drm_device *dev)
 	for_each_pipe(pipe)
 		error->pipestat[pipe] = I915_READ(PIPESTAT(pipe));
 
-	if (INTEL_INFO(dev)->gen >= 6)
+	if (INTEL_INFO(dev)->gen >= 6) {
 		error->error = I915_READ(ERROR_GEN6);
-	else
+		error->done_reg = I915_READ(DONE_REG);
+	} else {
 		error->error = 0;
+		error->done_reg = 0;
+	}
 
 	i915_record_ring_state(dev, error, &dev_priv->ring[RCS]);
 	if (HAS_BLT(dev))
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 417710d..106e091 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -363,6 +363,9 @@
 #define   ARB_MODE_ENABLE(x)	GFX_MODE_ENABLE(x)
 #define   ARB_MODE_DISABLE(x)	GFX_MODE_DISABLE(x)
 #define RENDER_HWS_PGA_GEN7	(0x04080)
+#define RING_FAULT_REG(ring)	(0x4094 +0x100*(ring)->id)
+#define ERROR			0x40a0
+#define DONE_REG		0x40b0
 #define BSD_HWS_PGA_GEN7	(0x04180)
 #define BLT_HWS_PGA_GEN7	(0x04280)
 #define RING_ACTHD(base)	((base)+0x74)
-- 
1.7.6.3