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drm/i915: Show IPEIR and IPEHR in the engine dump 

A useful bit of information for inspecting GPU stalls from
intel_engine_dump() are the error registers, IPEIR and IPEHR.

v2: Fixup gen changes in register offsets (Tvrtko)
v3: Old FADDR location as well
v4: Use I915_READ64_2x32

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171218123914.19027-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
This commit is contained in:
Chris Wilson 2017-12-18 12:39:14 +00:00
parent b65a9b9821
commit a0cf579080
1 changed files with 18 additions and 0 deletions
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18
drivers/gpu/drm/i915/intel_engine_cs.c
View File

@ -1757,6 +1757,24 @@ void intel_engine_dump(struct intel_engine_cs *engine,
addr = intel_engine_get_last_batch_head(engine);
drm_printf(m, "\tBBADDR: 0x%08x_%08x\n",
upper_32_bits(addr), lower_32_bits(addr));
if (INTEL_GEN(dev_priv) >= 8)
addr = I915_READ64_2x32(RING_DMA_FADD(engine->mmio_base),
RING_DMA_FADD_UDW(engine->mmio_base));
else if (INTEL_GEN(dev_priv) >= 4)
addr = I915_READ(RING_DMA_FADD(engine->mmio_base));
else
addr = I915_READ(DMA_FADD_I8XX);
drm_printf(m, "\tDMA_FADDR: 0x%08x_%08x\n",
upper_32_bits(addr), lower_32_bits(addr));
if (INTEL_GEN(dev_priv) >= 4) {
drm_printf(m, "\tIPEIR: 0x%08x\n",
I915_READ(RING_IPEIR(engine->mmio_base)));
drm_printf(m, "\tIPEHR: 0x%08x\n",
I915_READ(RING_IPEHR(engine->mmio_base)));
} else {
drm_printf(m, "\tIPEIR: 0x%08x\n", I915_READ(IPEIR));
drm_printf(m, "\tIPEHR: 0x%08x\n", I915_READ(IPEHR));
}
if (HAS_EXECLISTS(dev_priv)) {
const u32 *hws = &engine->status_page.page_addr[I915_HWS_CSB_BUF0_INDEX];