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| author |   Chris Wilson <chris@chris-wilson.co.uk> | 2020-02-11 23:09:44 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2020-02-12 20:34:36 +0000 |
| commit | c616d2387aeeb987f03eee848f04ffdc248c7aae (patch) | |
| tree | ccc9f76c8afe4425413c7ac3f6d098f8538816e5 /drivers/gpu/drm/i915/gt/intel_lrc.c | |
| parent | drm/i915/selftests: Avoid choosing zero for phys_sz (diff) | |
| download | wireguard-linux-c616d2387aeeb987f03eee848f04ffdc248c7aae.tar.xz wireguard-linux-c616d2387aeeb987f03eee848f04ffdc248c7aae.zip | |
drm/i915/gt: Expand bad CS completion event debug
Show the ring/request/context state if we see what we believe is an
early CS completion.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200211230944.1203098-1-chris@chris-wilson.co.uk
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_lrc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_lrc.c | 31 |
1 files changed, 29 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 902d440ef07d..1e3db37dea2b 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -2328,8 +2328,35 @@ static void process_csb(struct intel_engine_cs *engine) * coherent (visible from the CPU) before the * user interrupt and CSB is processed. */ - GEM_BUG_ON(!i915_request_completed(*execlists->active) && - !reset_in_progress(execlists)); + if (GEM_SHOW_DEBUG() && + !i915_request_completed(*execlists->active) && + !reset_in_progress(execlists)) { + struct i915_request *rq = *execlists->active; + const u32 *regs = rq->context->lrc_reg_state; + + ENGINE_TRACE(engine, + "ring:{start:0x%08x, head:%04x, tail:%04x, ctl:%08x, mode:%08x}\n", + ENGINE_READ(engine, RING_START), + ENGINE_READ(engine, RING_HEAD) & HEAD_ADDR, + ENGINE_READ(engine, RING_TAIL) & TAIL_ADDR, + ENGINE_READ(engine, RING_CTL), + ENGINE_READ(engine, RING_MI_MODE)); + ENGINE_TRACE(engine, + "rq:{start:%08x, head:%04x, tail:%04x, seqno:%llx:%d, hwsp:%d}, ", + i915_ggtt_offset(rq->ring->vma), + rq->head, rq->tail, + rq->fence.context, + lower_32_bits(rq->fence.seqno), + hwsp_seqno(rq)); + ENGINE_TRACE(engine, + "ctx:{start:%08x, head:%04x, tail:%04x}, ", + regs[CTX_RING_START], + regs[CTX_RING_HEAD], + regs[CTX_RING_TAIL]); + + GEM_BUG_ON("context completed before request"); + } + execlists_schedule_out(*execlists->active++); GEM_BUG_ON(execlists->active - execlists->inflight > |