drm/i915: Record BSD engine error state

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

drivers/gpu/drm/i915/i915_debugfs.c

@@ -634,6 +634,12 @@ static int i915_error_state(struct seq_file *m, void *unused)
 		seq_printf(m, "  IPEIR:    0x%08x\n", error->bcs_ipeir);
 		seq_printf(m, "  INSTDONE: 0x%08x\n", error->bcs_instdone);
 		seq_printf(m, "  seqno:    0x%08x\n", error->bcs_seqno);
+		seq_printf(m, "Video (BSD) command stream:\n");
+		seq_printf(m, "  ACTHD:    0x%08x\n", error->vcs_acthd);
+		seq_printf(m, "  IPEHR:    0x%08x\n", error->vcs_ipehr);
+		seq_printf(m, "  IPEIR:    0x%08x\n", error->vcs_ipeir);
+		seq_printf(m, "  INSTDONE: 0x%08x\n", error->vcs_instdone);
+		seq_printf(m, "  seqno:    0x%08x\n", error->vcs_seqno);
 	}
 	seq_printf(m, "Render command stream:\n");
 	seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);

drivers/gpu/drm/i915/i915_drv.h

@@ -154,6 +154,11 @@ struct drm_i915_error_state {
 	u32 bcs_ipeir;
 	u32 bcs_instdone;
 	u32 bcs_seqno;
+	u32 vcs_acthd; /* gen6+ bsd engine */
+	u32 vcs_ipehr;
+	u32 vcs_ipeir;
+	u32 vcs_instdone;
+	u32 vcs_seqno;
 	u32 instpm;
 	u32 instps;
 	u32 instdone1;

drivers/gpu/drm/i915/i915_irq.c

@@ -595,6 +595,7 @@ static void i915_capture_error_state(struct drm_device *dev)
 	error->error = 0;
 	if (INTEL_INFO(dev)->gen >= 6) {
 		error->error = I915_READ(ERROR_GEN6);
+
 		error->bcs_acthd = I915_READ(BCS_ACTHD);
 		error->bcs_ipehr = I915_READ(BCS_IPEHR);
 		error->bcs_ipeir = I915_READ(BCS_IPEIR);
@@ -602,6 +603,14 @@ static void i915_capture_error_state(struct drm_device *dev)
 		error->bcs_seqno = 0;
 		if (dev_priv->blt_ring.get_seqno)
 			error->bcs_seqno = dev_priv->blt_ring.get_seqno(&dev_priv->blt_ring);
+
+		error->vcs_acthd = I915_READ(VCS_ACTHD);
+		error->vcs_ipehr = I915_READ(VCS_IPEHR);
+		error->vcs_ipeir = I915_READ(VCS_IPEIR);
+		error->vcs_instdone = I915_READ(VCS_INSTDONE);
+		error->vcs_seqno = 0;
+		if (dev_priv->bsd_ring.get_seqno)
+			error->vcs_seqno = dev_priv->bsd_ring.get_seqno(&dev_priv->bsd_ring);
 	}
 	if (INTEL_INFO(dev)->gen >= 4) {
 		error->ipeir = I915_READ(IPEIR_I965);

drivers/gpu/drm/i915/i915_reg.h

@@ -305,6 +305,10 @@
 #define INSTDONE	0x02090
 #define NOPID		0x02094
 #define HWSTAM		0x02098
+#define VCS_INSTDONE	0x1206C
+#define VCS_IPEIR	0x12064
+#define VCS_IPEHR	0x12068
+#define VCS_ACTHD	0x12074
 #define BCS_INSTDONE	0x2206C
 #define BCS_IPEIR	0x22064
 #define BCS_IPEHR	0x22068