[PATCH v2 5/9] drm/i915: Eliminate IS_MTL_MEDIA_STEP

[Matt Roper <matthew.d.roper@xxxxxxxxx>]

Stepping-specific media behavior shouldn't be tied to MTL as a platform,
but rather specifically to the Xe_LPM+ IP.  Future non-MTL platforms may
re-use this IP and will need to follow the exact same logic and apply
the same workarounds.  IS_MTL_MEDIA_STEP() is dropped in favor of
IS_GT_IP_STEP, which checks the media IP version associated with a
specific IP and also ensures that we're operating on the media GT, not
the primary GT.

v2:
 - Switch to the IS_GT_IP_STEP macro.

Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
 drivers/gpu/drm/i915/gt/intel_rc6.c |  3 +--
 drivers/gpu/drm/i915/i915_drv.h     |  4 ----
 drivers/gpu/drm/i915/i915_perf.c    | 15 ++++-----------
 3 files changed, 5 insertions(+), 17 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_rc6.c b/drivers/gpu/drm/i915/gt/intel_rc6.c
index 58bb1c55294c..721006fc80e5 100644
--- a/drivers/gpu/drm/i915/gt/intel_rc6.c
+++ b/drivers/gpu/drm/i915/gt/intel_rc6.c
@@ -526,8 +526,7 @@ static bool rc6_supported(struct intel_rc6 *rc6)
 		return false;
 	}
 
-	if (IS_MTL_MEDIA_STEP(gt->i915, STEP_A0, STEP_B0) &&
-	    gt->type == GT_MEDIA) {
+	if (IS_GT_IP_STEP(MEDIA, gt, IP_VER(13, 0), A0, B0)) {
 		drm_notice(&i915->drm,
 			   "Media RC6 disabled on A step\n");
 		return false;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 687745550355..a417aa3e0202 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -740,10 +740,6 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 	(IS_METEORLAKE(__i915) && \
 	 IS_DISPLAY_STEP(__i915, since, until))
 
-#define IS_MTL_MEDIA_STEP(__i915, since, until) \
-	(IS_METEORLAKE(__i915) && \
-	 IS_MEDIA_STEP(__i915, since, until))
-
 /*
  * DG2 hardware steppings are a bit unusual.  The hardware design was forked to
  * create three variants (G10, G11, and G12) which each have distinct
diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c
index 04bc1f4a1115..980e99e24d18 100644
--- a/drivers/gpu/drm/i915/i915_perf.c
+++ b/drivers/gpu/drm/i915/i915_perf.c
@@ -4223,7 +4223,7 @@ static int read_properties_unlocked(struct i915_perf *perf,
 	 * C6 disable in BIOS. Fail if Media C6 is enabled on steppings where OAM
 	 * does not work as expected.
 	 */
-	if (IS_MTL_MEDIA_STEP(props->engine->i915, STEP_A0, STEP_C0) &&
+	if (IS_GT_IP_STEP(MEDIA, props->engine->gt, IP_VER(13, 0), A0, C0) &&
 	    props->engine->oa_group->type == TYPE_OAM &&
 	    intel_check_bios_c6_setup(&props->engine->gt->rc6)) {
 		drm_dbg(&perf->i915->drm,
@@ -5332,16 +5332,9 @@ int i915_perf_ioctl_version(struct drm_i915_private *i915)
 	 * C6 disable in BIOS. If Media C6 is enabled in BIOS, return version 6
 	 * to indicate that OA media is not supported.
 	 */
-	if (IS_MTL_MEDIA_STEP(i915, STEP_A0, STEP_C0)) {
-		struct intel_gt *gt;
-		int i;
-
-		for_each_gt(gt, i915, i) {
-			if (gt->type == GT_MEDIA &&
-			    intel_check_bios_c6_setup(&gt->rc6))
-				return 6;
-		}
-	}
+	if (IS_GT_IP_STEP(MEDIA, i915->media_gt, IP_VER(13, 0), A0, C0) &&
+	    intel_check_bios_c6_setup(&i915->media_gt->rc6))
+		return 6;
 
 	return 7;
 }
-- 
2.41.0