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drm/i915: Eliminate IS_MTL_MEDIA_STEP
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_MEDIA_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. v3: - Switch back to long-form IS_MEDIA_GT_IP_STEP. (Jani) v4: - Build IS_MEDIA_GT_IP_STEP on top of IS_MEDIA_GT_IP_RANGE and IS_MEDIA_STEP building blocks and name the parameters from/until rather than begin/fixed.. (Jani) v5: - Tweak macro comment wording. (Gustavo) - Add a check to catch NULL gt in IS_MEDIA_GT_IP_RANGE; this allows it to be used safely on i915->media_gt, which may be NULL on some platforms. (Gustavo) Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Gustavo Sousa <gustavo.sousa@intel.com> Signed-off-by: Matt Roper <matthew.d.roper@intel.com> Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230821180619.650007-16-matthew.d.roper@intel.com
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4 changed files with 37 additions and 17 deletions
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@ -25,6 +25,20 @@ struct drm_printer;
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GRAPHICS_VER_FULL((gt)->i915) >= (from) && \
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GRAPHICS_VER_FULL((gt)->i915) <= (until)))
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/*
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* Check that the GT is a media GT and has an IP version within the
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* specified range (inclusive).
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*
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* Only usable on platforms with a standalone media design (i.e., IP version 13
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* and higher).
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*/
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#define IS_MEDIA_GT_IP_RANGE(gt, from, until) ( \
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BUILD_BUG_ON_ZERO((from) < IP_VER(13, 0)) + \
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BUILD_BUG_ON_ZERO((until) < (from)) + \
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((gt) && (gt)->type == GT_MEDIA && \
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MEDIA_VER_FULL((gt)->i915) >= (from) && \
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MEDIA_VER_FULL((gt)->i915) <= (until)))
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/*
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* Check that the GT is a graphics GT with a specific IP version and has
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* a stepping in the range [from, until). The lower stepping bound is
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@ -45,6 +59,24 @@ struct drm_printer;
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(IS_GFX_GT_IP_RANGE((gt), (ipver), (ipver)) && \
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IS_GRAPHICS_STEP((gt)->i915, (from), (until))))
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/*
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* Check that the GT is a media GT with a specific IP version and has
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* a stepping in the range [from, until). The lower stepping bound is
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* inclusive, the upper bound is exclusive. The most common use-case of this
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* macro is for checking bounds for workarounds, which usually have a stepping
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* ("from") at which the hardware issue is first present and another stepping
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* ("until") at which a hardware fix is present and the software workaround is
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* no longer necessary. "STEP_FOREVER" can be passed as "until" for
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* workarounds that have no upper stepping bound for the specified IP version.
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*
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* This macro may only be used to match on platforms that have a standalone
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* media design (i.e., media version 13 or higher).
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*/
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#define IS_MEDIA_GT_IP_STEP(gt, ipver, from, until) ( \
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BUILD_BUG_ON_ZERO((until) <= (from)) + \
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(IS_MEDIA_GT_IP_RANGE((gt), (ipver), (ipver)) && \
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IS_MEDIA_STEP((gt)->i915, (from), (until))))
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#define GT_TRACE(gt, fmt, ...) do { \
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const struct intel_gt *gt__ __maybe_unused = (gt); \
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GEM_TRACE("%s " fmt, dev_name(gt__->i915->drm.dev), \
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@ -524,8 +524,7 @@ static bool rc6_supported(struct intel_rc6 *rc6)
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return false;
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}
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if (IS_MTL_MEDIA_STEP(gt->i915, STEP_A0, STEP_B0) &&
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gt->type == GT_MEDIA) {
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if (IS_MEDIA_GT_IP_STEP(gt, IP_VER(13, 0), STEP_A0, STEP_B0)) {
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drm_notice(&i915->drm,
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"Media RC6 disabled on A step\n");
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return false;
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@ -690,10 +690,6 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
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(IS_METEORLAKE(__i915) && \
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IS_DISPLAY_STEP(__i915, since, until))
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#define IS_MTL_MEDIA_STEP(__i915, since, until) \
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(IS_METEORLAKE(__i915) && \
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IS_MEDIA_STEP(__i915, since, until))
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#define IS_DG2_DISPLAY_STEP(__i915, since, until) \
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(IS_DG2(__i915) && \
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IS_DISPLAY_STEP(__i915, since, until))
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@ -4191,7 +4191,7 @@ static int read_properties_unlocked(struct i915_perf *perf,
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* C6 disable in BIOS. Fail if Media C6 is enabled on steppings where OAM
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* does not work as expected.
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*/
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if (IS_MTL_MEDIA_STEP(props->engine->i915, STEP_A0, STEP_C0) &&
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if (IS_MEDIA_GT_IP_STEP(props->engine->gt, IP_VER(13, 0), STEP_A0, STEP_C0) &&
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props->engine->oa_group->type == TYPE_OAM &&
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intel_check_bios_c6_setup(&props->engine->gt->rc6)) {
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drm_dbg(&perf->i915->drm,
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@ -5300,16 +5300,9 @@ int i915_perf_ioctl_version(struct drm_i915_private *i915)
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* C6 disable in BIOS. If Media C6 is enabled in BIOS, return version 6
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* to indicate that OA media is not supported.
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*/
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if (IS_MTL_MEDIA_STEP(i915, STEP_A0, STEP_C0)) {
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struct intel_gt *gt;
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int i;
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for_each_gt(gt, i915, i) {
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if (gt->type == GT_MEDIA &&
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intel_check_bios_c6_setup(>->rc6))
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return 6;
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}
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}
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if (IS_MEDIA_GT_IP_STEP(i915->media_gt, IP_VER(13, 0), STEP_A0, STEP_C0) &&
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intel_check_bios_c6_setup(&i915->media_gt->rc6))
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return 6;
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return 7;
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}
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