The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x b2f59e9026038a5bbcbc0019fa58f963138211ee # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023080734-pork-defog-d54c@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..

Possible dependencies:

b2f59e902603 ("drm/i915: Add the gen12_needs_ccs_aux_inv helper") 29063c6a6a57 ("drm/i915/mtl: Add gsi_offset when emitting aux table invalidation") d8b932014c4a ("drm/i915: avoid concurrent writes to aux_inv") 6639fabb1685 ("drm/i915/xehp: Drop aux table invalidation on FlatCCS platforms") ff6b19d3a0f9 ("drm/i915/xehp: Add compute workarounds") 803efd297e31 ("drm/i915/xehp: compute engine pipe_control") 0d53879faada ("drm/i915/gt: Order GT registers by MMIO offset") bd3de31950ae ("drm/i915/gt: Use consistent offset notation in intel_gt_regs.h") 680a5cd10b9c ("drm/i915/gt: Cleanup spacing of intel_gt_regs.h") ab9e00a3509a ("drm/i915/gt: Use parameterized RING_MI_MODE") 93cc7aa0b037 ("drm/i915/gt: Move SFC lock bits to intel_engine_regs.h") 4895b90dd510 ("drm/i915/gt: Drop duplicate register definition for VDBOX_CGCTL3F18") 22ba60f617bd ("drm/i915: Move [more] GT registers to their own header file") 0d6419e9c855 ("drm/i915: Move GT registers to their own header file") e71a74122863 ("drm/i915: Parameterize MI_PREDICATE registers") 7d296f369d38 ("drm/i915: Parameterize R_PWR_CLK_STATE register definition") 2ef6d3bf4262 ("drm/i915/perf: Move OA regs to their own header") 063565aca373 ("Merge drm/drm-next into drm-intel-next")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From b2f59e9026038a5bbcbc0019fa58f963138211ee Mon Sep 17 00:00:00 2001 From: Andi Shyti andi.shyti@linux.intel.com Date: Tue, 25 Jul 2023 02:19:45 +0200 Subject: [PATCH] drm/i915: Add the gen12_needs_ccs_aux_inv helper

We always assumed that a device might either have AUX or FLAT CCS, but this is an approximation that is not always true, e.g. PVC represents an exception.

Set the basis for future finer selection by implementing a boolean gen12_needs_ccs_aux_inv() function that tells whether aux invalidation is needed or not.

Currently PVC is the only exception to the above mentioned rule.

Requires: 059ae7ae2a1c ("drm/i915/gt: Cleanup aux invalidation registers") Signed-off-by: Andi Shyti andi.shyti@linux.intel.com Cc: Matt Roper matthew.d.roper@intel.com Cc: Jonathan Cavitt jonathan.cavitt@intel.com Cc: stable@vger.kernel.org # v5.8+ Reviewed-by: Matt Roper matthew.d.roper@intel.com Reviewed-by: Andrzej Hajda andrzej.hajda@intel.com Reviewed-by: Nirmoy Das nirmoy.das@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20230725001950.1014671-3-andi.... (cherry picked from commit c827655b87ad201ebe36f2e28d16b5491c8f7801) Signed-off-by: Tvrtko Ursulin tvrtko.ursulin@intel.com

diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c index 563efee05560..460c9225a50f 100644 --- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c @@ -165,6 +165,18 @@ static u32 preparser_disable(bool state) return MI_ARB_CHECK | 1 << 8 | state; }

+static bool gen12_needs_ccs_aux_inv(struct intel_engine_cs *engine) +{ + if (IS_PONTEVECCHIO(engine->i915)) + return false; + + /* + * so far platforms supported by i915 having + * flat ccs do not require AUX invalidation + */ + return !HAS_FLAT_CCS(engine->i915); +} + u32 *gen12_emit_aux_table_inv(struct intel_gt *gt, u32 *cs, const i915_reg_t inv_reg) { u32 gsi_offset = gt->uncore->gsi_offset; @@ -267,7 +279,7 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode) else if (engine->class == COMPUTE_CLASS) flags &= ~PIPE_CONTROL_3D_ENGINE_FLAGS;

- if (!HAS_FLAT_CCS(rq->engine->i915)) + if (gen12_needs_ccs_aux_inv(rq->engine)) count = 8 + 4; else count = 8; @@ -285,7 +297,7 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32 mode)

cs = gen8_emit_pipe_control(cs, flags, LRC_PPHWSP_SCRATCH_ADDR);

- if (!HAS_FLAT_CCS(rq->engine->i915)) { + if (gen12_needs_ccs_aux_inv(rq->engine)) { /* hsdes: 1809175790 */ cs = gen12_emit_aux_table_inv(rq->engine->gt, cs, GEN12_CCS_AUX_INV); @@ -307,7 +319,7 @@ int gen12_emit_flush_xcs(struct i915_request *rq, u32 mode) if (mode & EMIT_INVALIDATE) { cmd += 2;

- if (!HAS_FLAT_CCS(rq->engine->i915) && + if (gen12_needs_ccs_aux_inv(rq->engine) && (rq->engine->class == VIDEO_DECODE_CLASS || rq->engine->class == VIDEO_ENHANCEMENT_CLASS)) { aux_inv = rq->engine->mask &