linux-kernel - [PATCH 5.19 024/365] drm/i915/gt: Invalidate TLB of the OA unit at TLB invalidations

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Date:   Tue, 23 Aug 2022 09:58:45 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Chris Wilson <chris.p.wilson@...el.com>,
        Fei Yang <fei.yang@...el.com>,
        Andi Shyti <andi.shyti@...ux.intel.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...el.com>,
        Thomas Hellström 
        <thomas.hellstrom@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>
Subject: [PATCH 5.19 024/365] drm/i915/gt: Invalidate TLB of the OA unit at TLB invalidations

From: Chris Wilson <chris.p.wilson@...el.com>

commit 180abeb2c5032704787151135b6a38c6b71295a6 upstream.

Ensure that the TLB of the OA unit is also invalidated
on gen12 HW, as just invalidating the TLB of an engine is not
enough.

Cc: stable@...r.kernel.org
Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store")
Signed-off-by: Chris Wilson <chris.p.wilson@...el.com>
Cc: Fei Yang <fei.yang@...el.com>
Reviewed-by: Andi Shyti <andi.shyti@...ux.intel.com>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@...el.com>
Acked-by: Thomas Hellström <thomas.hellstrom@...ux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...nel.org>
Signed-off-by: Andi Shyti <andi.shyti@...ux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/59724d9f5cf1e93b1620d01b8332ac991555283d.1658924372.git.mchehab@kernel.org
(cherry picked from commit dfc83de118ff7930acc9a4c8dfdba7c153aa44d6)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/gpu/drm/i915/gt/intel_gt.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -10,6 +10,7 @@
 #include "pxp/intel_pxp.h"
 
 #include "i915_drv.h"
+#include "i915_perf_oa_regs.h"
 #include "intel_context.h"
 #include "intel_engine_pm.h"
 #include "intel_engine_regs.h"
@@ -1226,6 +1227,15 @@ void intel_gt_invalidate_tlbs(struct int
 		awake |= engine->mask;
 	}
 
+	/* Wa_2207587034:tgl,dg1,rkl,adl-s,adl-p */
+	if (awake &&
+	    (IS_TIGERLAKE(i915) ||
+	     IS_DG1(i915) ||
+	     IS_ROCKETLAKE(i915) ||
+	     IS_ALDERLAKE_S(i915) ||
+	     IS_ALDERLAKE_P(i915)))
+		intel_uncore_write_fw(uncore, GEN12_OA_TLB_INV_CR, 1);
+
 	spin_unlock_irq(&uncore->lock);
 
 	for_each_engine_masked(engine, gt, awake, tmp) {