drm/i915: Show CCID in engine dumps

For debugging context issues, knowing what context the GPU is
loading/using is helpful.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180614094103.18025-4-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
index 8b3d7aa..13bb8c7 100644 (file)
--- a/drivers/gpu/drm/i915/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/intel_engine_cs.c
@@ -1273,6 +1273,8 @@ static void intel_engine_print_registers(const struct intel_engine_cs *engine,
                &engine->execlists;
        u64 addr;
 
+       if (engine->id == RCS && IS_GEN(dev_priv, 4, 7))
+               drm_printf(m, "\tCCID: 0x%08x\n", I915_READ(CCID));
        drm_printf(m, "\tRING_START: 0x%08x\n",
                   I915_READ(RING_START(engine->mmio_base)));
        drm_printf(m, "\tRING_HEAD:  0x%08x\n",