[Intel-gfx] [PATCH 2/3] drm/i915: Show IPEIR and IPEHR in the engine dump

[Chris Wilson]

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

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala at linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_engine_cs.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 510e0bc3a377..05bd9e17452c 100644
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -1757,6 +1757,13 @@ 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));
+	addr = I915_READ(RING_DMA_FADD(engine->mmio_base));
+	drm_printf(m, "\tDMA_FADDR: 0x%08x_%08x\n",
+		   upper_32_bits(addr), lower_32_bits(addr));
+	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)));
 
 	if (HAS_EXECLISTS(dev_priv)) {
 		const u32 *hws = &engine->status_page.page_addr[I915_HWS_CSB_BUF0_INDEX];
-- 
2.15.1