From 33f3f518fbb65d86f163083b74823e8bbe561bfc Mon Sep 17 00:00:00 2001
From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed, 14 Dec 2011 13:57:39 +0100
Subject: [PATCH] drm/i915: add per-ring fault reg to error_state
This was pretty handy when figuring out what exactly went wrong with
ppgtt and it might also be useful when we stop filling the entire gart
with scratch page entries.
Also add the gen6+ DONE reg while at it.
v2: Chris Wilson suggested to allocate the error_state with kzalloc
for better paranoia. Also kill existing spurious clears of the
error_state while at it.
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Signed-Off-by: Daniel Vetter <daniel.vetter@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 | 13 +++++++------
drivers/gpu/drm/i915/i915_reg.h | 2 ++
4 files changed, 17 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index f0486059e44e..d4104904e58b 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -718,8 +718,10 @@ 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]);
}
@@ -749,8 +751,10 @@ 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 12e8cce79289..865de800756d 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -165,6 +165,8 @@ 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 4dedb3148066..64bb2127911e 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));
@@ -898,7 +900,6 @@ static void i915_record_ring_state(struct drm_device *dev,
error->ipeir[ring->id] = I915_READ(IPEIR);
error->ipehr[ring->id] = I915_READ(IPEHR);
error->instdone[ring->id] = I915_READ(INSTDONE);
- error->bbaddr = 0;
}
error->instpm[ring->id] = I915_READ(RING_INSTPM(ring->mmio_base));
@@ -932,7 +933,7 @@ static void i915_capture_error_state(struct drm_device *dev)
return;
/* Account for pipe specific data like PIPE*STAT */
- error = kmalloc(sizeof(*error), GFP_ATOMIC);
+ error = kzalloc(sizeof(*error), GFP_ATOMIC);
if (!error) {
DRM_DEBUG_DRIVER("out of memory, not capturing error state\n");
return;
@@ -946,10 +947,10 @@ 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->error = 0;
+ error->done_reg = I915_READ(DONE_REG);
+ }
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 d107a1d756a8..f9607387c00c 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -319,6 +319,8 @@
#define RING_HWS_PGA(base) ((base)+0x80)
#define RING_HWS_PGA_GEN6(base) ((base)+0x2080)
#define RENDER_HWS_PGA_GEN7 (0x04080)
+#define RING_FAULT_REG(ring) (0x4094 + 0x100*(ring)->id)
+#define DONE_REG 0x40b0
#define BSD_HWS_PGA_GEN7 (0x04180)
#define BLT_HWS_PGA_GEN7 (0x04280)
#define RING_ACTHD(base) ((base)+0x74)
--
2.34.1