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Subject[PATCH 5.19 024/365] drm/i915/gt: Invalidate TLB of the OA unit at TLB invalidations
Date
From: Chris Wilson <chris.p.wilson@intel.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@vger.kernel.org
Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store")
Signed-off-by: Chris Wilson <chris.p.wilson@intel.com>
Cc: Fei Yang <fei.yang@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Acked-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Andi Shyti <andi.shyti@linux.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@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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) {

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