Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> writes:
> Knowing the RING_MODE flags is useful for checking the state of the
> engine, such as whether the CS is idle after trying to stop the engines
> before reset.
>
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_engine_cs.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_engine_cs.c b/drivers/gpu/drm/i915/intel_engine_cs.c
> index fedb839dff61..e676e345c453 100644
> --- a/drivers/gpu/drm/i915/intel_engine_cs.c
> +++ b/drivers/gpu/drm/i915/intel_engine_cs.c
> @@ -1726,6 +1726,11 @@ void intel_engine_dump(struct intel_engine_cs *engine, struct drm_printer *m)
> drm_printf(m, "\tRING_CTL: 0x%08x [%s]\n",
> I915_READ(RING_CTL(engine->mmio_base)),
> I915_READ(RING_CTL(engine->mmio_base)) & (RING_WAIT | RING_WAIT_SEMAPHORE) ? "waiting" : "");
> + if (INTEL_GEN(engine->i915) > 2) {
> + drm_printf(m, "\tRING_MODE: 0x%08x [%s]\n",
> + I915_READ(RING_MI_MODE(engine->mmio_base)),
> + I915_READ(RING_MI_MODE(engine->mmio_base)) & (MODE_IDLE) ? "idle" : "");
or use "[idle]" and just %s in printf.
Reviewed-by: Mika Kuoppala <mika.kuoppala@xxxxxxxxxxxxxxx>
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