Skip to content

Commit

Permalink
drm/i915: Use new INSTDONE registers (Gen7+)
Browse files Browse the repository at this point in the history 
Using the extracted INSTDONE reading, and our new register definitions,
update our hangcheck detection and error collection to use it. This
primarily means changing == to memcmp, and changing = to memcpy.
Hopefully this will give more info on error dump, and provide more
accurate hangcheck detection (both are actually TBD).

Also, remove the reading of instdone1 from the ring error collection
function, and just crap everything in capture_error_state (that could be
split into a separate patch if it wasn't so trivial).

v2: Now assuming i915_get_extra_instdone does the memset we can clean up the
code a bit (Jani)

v3: use ARRAY_SIZE as requested earlier by Jani (didn't change sizeof)
Updated commit msg

Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
  • Loading branch information
Ben Widawsky authored and Daniel Vetter committed Aug 24, 2012
1 parent d53bd48 commit 050ee91
Show file tree
Hide file tree
Showing 3 changed files with 33 additions and 23 deletions.
8 changes: 5 additions & 3 deletions drivers/gpu/drm/i915/i915_debugfs.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -662,10 +662,9 @@ static void i915_ring_error_state(struct seq_file *m,
seq_printf(m, " IPEIR: 0x%08x\n", error->ipeir[ring]);
seq_printf(m, " IPEHR: 0x%08x\n", error->ipehr[ring]);
seq_printf(m, " INSTDONE: 0x%08x\n", error->instdone[ring]);
if (ring == RCS && INTEL_INFO(dev)->gen >= 4) {
seq_printf(m, " INSTDONE1: 0x%08x\n", error->instdone1);
if (ring == RCS && INTEL_INFO(dev)->gen >= 4)
seq_printf(m, " BBADDR: 0x%08llx\n", error->bbaddr);
}

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]);
Expand Down Expand Up @@ -714,6 +713,9 @@ 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]);

for (i = 0; i < ARRAY_SIZE(error->extra_instdone); i++)
seq_printf(m, " INSTDONE_%d: 0x%08x\n", i, error->extra_instdone[i]);

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);
Expand Down
5 changes: 2 additions & 3 deletions drivers/gpu/drm/i915/i915_drv.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -199,7 +199,7 @@ struct drm_i915_error_state {
u32 err_int; /* gen7 */
u32 instpm[I915_NUM_RINGS];
u32 instps[I915_NUM_RINGS];
u32 instdone1;
u32 extra_instdone[I915_NUM_INSTDONE_REG];
u32 seqno[I915_NUM_RINGS];
u64 bbaddr;
u32 fault_reg[I915_NUM_RINGS];
Expand Down Expand Up @@ -454,8 +454,7 @@ typedef struct drm_i915_private {
struct timer_list hangcheck_timer;
int hangcheck_count;
uint32_t last_acthd[I915_NUM_RINGS];
uint32_t last_instdone;
uint32_t last_instdone1;
uint32_t prev_instdone[I915_NUM_INSTDONE_REG];

unsigned int stop_rings;

Expand Down
43 changes: 26 additions & 17 deletions drivers/gpu/drm/i915/i915_irq.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1077,12 +1077,25 @@ static void i915_get_extra_instdone(struct drm_device *dev,
struct drm_i915_private *dev_priv = dev->dev_private;
memset(instdone, 0, sizeof(*instdone) * I915_NUM_INSTDONE_REG);

if (INTEL_INFO(dev)->gen < 4) {
switch(INTEL_INFO(dev)->gen) {
case 2:
case 3:
instdone[0] = I915_READ(INSTDONE);
instdone[1] = 0;
} else {
break;
case 4:
case 5:
case 6:
instdone[0] = I915_READ(INSTDONE_I965);
instdone[1] = I915_READ(INSTDONE1);
break;
default:
WARN_ONCE(1, "Unsupported platform\n");
case 7:
instdone[0] = I915_READ(GEN7_INSTDONE_1);
instdone[1] = I915_READ(GEN7_SC_INSTDONE);
instdone[2] = I915_READ(GEN7_SAMPLER_INSTDONE);
instdone[3] = I915_READ(GEN7_ROW_INSTDONE);
break;
}
}

Expand All @@ -1108,10 +1121,8 @@ static void i915_record_ring_state(struct drm_device *dev,
error->ipehr[ring->id] = I915_READ(RING_IPEHR(ring->mmio_base));
error->instdone[ring->id] = I915_READ(RING_INSTDONE(ring->mmio_base));
error->instps[ring->id] = I915_READ(RING_INSTPS(ring->mmio_base));
if (ring->id == RCS) {
error->instdone1 = I915_READ(INSTDONE1);
if (ring->id == RCS)
error->bbaddr = I915_READ64(BB_ADDR);
}
} else {
error->faddr[ring->id] = I915_READ(DMA_FADD_I8XX);
error->ipeir[ring->id] = I915_READ(IPEIR);
Expand Down Expand Up @@ -1230,6 +1241,8 @@ static void i915_capture_error_state(struct drm_device *dev)
if (INTEL_INFO(dev)->gen == 7)
error->err_int = I915_READ(GEN7_ERR_INT);

i915_get_extra_instdone(dev, error->extra_instdone);

i915_gem_record_fences(dev, error);
i915_gem_record_rings(dev, error);

Expand Down Expand Up @@ -1307,7 +1320,7 @@ static void i915_report_and_clear_eir(struct drm_device *dev)
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t instdone[I915_NUM_INSTDONE_REG];
u32 eir = I915_READ(EIR);
int pipe;
int pipe, i;

if (!eir)
return;
Expand All @@ -1322,9 +1335,9 @@ static void i915_report_and_clear_eir(struct drm_device *dev)

pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965));
pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965));
pr_err(" INSTDONE: 0x%08x\n", instdone[0]);
for (i = 0; i < ARRAY_SIZE(instdone); i++)
pr_err(" INSTDONE_%d: 0x%08x\n", i, instdone[i]);
pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS));
pr_err(" INSTDONE1: 0x%08x\n", instdone[1]);
pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965));
I915_WRITE(IPEIR_I965, ipeir);
POSTING_READ(IPEIR_I965);
Expand Down Expand Up @@ -1358,12 +1371,13 @@ static void i915_report_and_clear_eir(struct drm_device *dev)
if (eir & I915_ERROR_INSTRUCTION) {
pr_err("instruction error\n");
pr_err(" INSTPM: 0x%08x\n", I915_READ(INSTPM));
for (i = 0; i < ARRAY_SIZE(instdone); i++)
pr_err(" INSTDONE_%d: 0x%08x\n", i, instdone[i]);
if (INTEL_INFO(dev)->gen < 4) {
u32 ipeir = I915_READ(IPEIR);

pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR));
pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR));
pr_err(" INSTDONE: 0x%08x\n", instdone[0]);
pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD));
I915_WRITE(IPEIR, ipeir);
POSTING_READ(IPEIR);
Expand All @@ -1372,9 +1386,7 @@ static void i915_report_and_clear_eir(struct drm_device *dev)

pr_err(" IPEIR: 0x%08x\n", I915_READ(IPEIR_I965));
pr_err(" IPEHR: 0x%08x\n", I915_READ(IPEHR_I965));
pr_err(" INSTDONE: 0x%08x\n", instdone[0]);
pr_err(" INSTPS: 0x%08x\n", I915_READ(INSTPS));
pr_err(" INSTDONE1: 0x%08x\n", instdone[1]);
pr_err(" ACTHD: 0x%08x\n", I915_READ(ACTHD_I965));
I915_WRITE(IPEIR_I965, ipeir);
POSTING_READ(IPEIR_I965);
Expand Down Expand Up @@ -1718,18 +1730,15 @@ void i915_hangcheck_elapsed(unsigned long data)
}

i915_get_extra_instdone(dev, instdone);

if (memcmp(dev_priv->last_acthd, acthd, sizeof(acthd)) == 0 &&
dev_priv->last_instdone == instdone[0] &&
dev_priv->last_instdone1 == instdone[1]) {
memcmp(dev_priv->prev_instdone, instdone, sizeof(instdone)) == 0) {
if (i915_hangcheck_hung(dev))
return;
} else {
dev_priv->hangcheck_count = 0;

memcpy(dev_priv->last_acthd, acthd, sizeof(acthd));
dev_priv->last_instdone = instdone[0];
dev_priv->last_instdone1 = instdone[1];
memcpy(dev_priv->prev_instdone, instdone, sizeof(instdone));
}

repeat:
Expand Down

0 comments on commit 050ee91

Please sign in to comment.