From 14fd0d6d0b91a207162f1a22104eb34d403b8679 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Thu, 7 Apr 2016 07:29:10 +0100 Subject: [PATCH] drm/i915: Include engine->last_submitted_seqno in GPU error state It's useful to look at the last seqno submitted on a particular engine and compare it against the HWS value to check for irregularities. Signed-off-by: Chris Wilson Cc: Mika Kuoppala Cc: Joonas Lahtinen Reviewed-by: Mika Kuoppala Reviewed-by: Joonas Lahtinen Link: http://patchwork.freedesktop.org/patch/msgid/1460010558-10705-1-git-send-email-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_debugfs.c | 6 ++++-- drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/i915_gpu_error.c | 2 ++ 3 files changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index be4bcdcbb129..ebbf4e400684 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -1363,8 +1363,10 @@ static int i915_hangcheck_info(struct seq_file *m, void *unused) for_each_engine_id(engine, dev_priv, id) { seq_printf(m, "%s:\n", engine->name); - seq_printf(m, "\tseqno = %x [current %x]\n", - engine->hangcheck.seqno, seqno[id]); + seq_printf(m, "\tseqno = %x [current %x, last %x]\n", + engine->hangcheck.seqno, + seqno[id], + engine->last_submitted_seqno); seq_printf(m, "\tACTHD = 0x%08llx [current 0x%08llx]\n", (long long)engine->hangcheck.acthd, (long long)acthd[id]); diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 4ebd3ff02803..a93e5dd4fa9a 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -495,6 +495,7 @@ struct drm_i915_error_state { u32 cpu_ring_head; u32 cpu_ring_tail; + u32 last_seqno; u32 semaphore_seqno[I915_NUM_ENGINES - 1]; /* Register state */ diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c index 6d63a2f5575a..ce77713a555d 100644 --- a/drivers/gpu/drm/i915/i915_gpu_error.c +++ b/drivers/gpu/drm/i915/i915_gpu_error.c @@ -296,6 +296,7 @@ static void i915_ring_error_state(struct drm_i915_error_state_buf *m, } } err_printf(m, " seqno: 0x%08x\n", ring->seqno); + err_printf(m, " last_seqno: 0x%08x\n", ring->last_seqno); err_printf(m, " waiting: %s\n", yesno(ring->waiting)); err_printf(m, " ring->head: 0x%08x\n", ring->cpu_ring_head); err_printf(m, " ring->tail: 0x%08x\n", ring->cpu_ring_tail); @@ -932,6 +933,7 @@ static void i915_record_ring_state(struct drm_device *dev, ering->instpm = I915_READ(RING_INSTPM(engine->mmio_base)); ering->seqno = engine->get_seqno(engine, false); ering->acthd = intel_ring_get_active_head(engine); + ering->last_seqno = engine->last_submitted_seqno; ering->start = I915_READ_START(engine); ering->head = I915_READ_HEAD(engine); ering->tail = I915_READ_TAIL(engine); -- 2.20.1