From patchwork Wed Jun 15 15:27:35 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 12882557 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DBC32C433EF for ; Wed, 15 Jun 2022 15:28:08 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6B918112223; Wed, 15 Jun 2022 15:27:52 +0000 (UTC) Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by gabe.freedesktop.org (Postfix) with ESMTPS id 6F8F2112241; Wed, 15 Jun 2022 15:27:49 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id E8D50B81F0D; Wed, 15 Jun 2022 15:27:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F3672C385A2; Wed, 15 Jun 2022 15:27:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1655306866; bh=nX1w5nyKD3K3Gw/ZF5PMRaXHVZxvYBa3oXkY2JHQUN0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=iyea28kx9k5ypeyLzp7cl1Ekca/aVGlkg75Bt3ZbxKPGTXSxU2vKgZ8XIjqXitRPW 5H/QWhoNVlftRm8xtMxFKzTFvb3+5FAulFoYwyuq6PTJtUbITk4V2Bq82d1H8kTmB6 QNp00KVxH49Z2PIgW1iWNFlcNAKcgfHNvWHG0GqwEtti8EUo5zTPzIHK/ksGGLL23S mohEEiyyP0AAxyro4qjdSFiw2litXaNf8u5fGvHIyVdW8Ka8CWwKiRNS10bIBNA658 ksgmxr6fGW3QfqzSjjT+JNh4fzUt3CaZX+qIvOZ1MfF0+4Jlvnpe45SC9fT+dgXX5t IO2UvEwRD8+aQ== Received: from mchehab by mail.kernel.org with local (Exim 4.95) (envelope-from ) id 1o1Uvm-00A4Jd-Cq; Wed, 15 Jun 2022 16:27:42 +0100 From: Mauro Carvalho Chehab To: Date: Wed, 15 Jun 2022 16:27:35 +0100 Message-Id: X-Mailer: git-send-email 2.36.1 In-Reply-To: References: MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 1/6] drm/i915/gt: Ignore TLB invalidations on idle engines X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , dri-devel@lists.freedesktop.org, Chris Wilson , Matthew Auld , Dave Airlie , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Lucas De Marchi , intel-gfx@lists.freedesktop.org, Thomas Hellstrom , Rodrigo Vivi , Mauro Carvalho Chehab , mauro.chehab@linux.intel.com, =?utf-8?q?Micha=C5=82_Winiarski?= , linux-kernel@vger.kernel.org, stable@vger.kernel.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Chris Wilson As an extension of the current skip TLB invalidations, check if the device is powered down prior to any engine activity, as, on such cases, all the TLBs were already invalidated, so an explicit TLB invalidation is not needed. This becomes more significant with GuC, as it can only do so when the connection to the GuC is awake. Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store") Signed-off-by: Chris Wilson Cc: Fei Yang Cc: Andi Shyti Cc: stable@vger.kernel.org Acked-by: Thomas Hellström Signed-off-by: Mauro Carvalho Chehab Reviewed-by: Andi Shyti --- See [PATCH 0/6] at: https://lore.kernel.org/all/cover.1655306128.git.mchehab@kernel.org/ drivers/gpu/drm/i915/gem/i915_gem_pages.c | 10 +++++---- drivers/gpu/drm/i915/gt/intel_gt.c | 26 +++++++++++++++++------ drivers/gpu/drm/i915/gt/intel_gt_pm.h | 3 +++ 3 files changed, 28 insertions(+), 11 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c b/drivers/gpu/drm/i915/gem/i915_gem_pages.c index 97c820eee115..6835279943df 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c @@ -6,14 +6,15 @@ #include +#include "gt/intel_gt.h" +#include "gt/intel_gt_pm.h" + #include "i915_drv.h" #include "i915_gem_object.h" #include "i915_scatterlist.h" #include "i915_gem_lmem.h" #include "i915_gem_mman.h" -#include "gt/intel_gt.h" - void __i915_gem_object_set_pages(struct drm_i915_gem_object *obj, struct sg_table *pages, unsigned int sg_page_sizes) @@ -217,10 +218,11 @@ __i915_gem_object_unset_pages(struct drm_i915_gem_object *obj) if (test_and_clear_bit(I915_BO_WAS_BOUND_BIT, &obj->flags)) { struct drm_i915_private *i915 = to_i915(obj->base.dev); + struct intel_gt *gt = to_gt(i915); intel_wakeref_t wakeref; - with_intel_runtime_pm_if_active(&i915->runtime_pm, wakeref) - intel_gt_invalidate_tlbs(to_gt(i915)); + with_intel_gt_pm_if_awake(gt, wakeref) + intel_gt_invalidate_tlbs(gt); } return pages; diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index f33290358c51..d5ed6a6ac67c 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.c +++ b/drivers/gpu/drm/i915/gt/intel_gt.c @@ -11,6 +11,7 @@ #include "i915_drv.h" #include "intel_context.h" +#include "intel_engine_pm.h" #include "intel_engine_regs.h" #include "intel_gt.h" #include "intel_gt_buffer_pool.h" @@ -1216,6 +1217,7 @@ void intel_gt_invalidate_tlbs(struct intel_gt *gt) struct drm_i915_private *i915 = gt->i915; struct intel_uncore *uncore = gt->uncore; struct intel_engine_cs *engine; + intel_engine_mask_t awake, tmp; enum intel_engine_id id; const i915_reg_t *regs; unsigned int num = 0; @@ -1239,12 +1241,27 @@ void intel_gt_invalidate_tlbs(struct intel_gt *gt) GEM_TRACE("\n"); - assert_rpm_wakelock_held(&i915->runtime_pm); - mutex_lock(>->tlb_invalidate_lock); intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL); + awake = 0; for_each_engine(engine, gt, id) { + struct reg_and_bit rb; + + if (!intel_engine_pm_is_awake(engine)) + continue; + + rb = get_reg_and_bit(engine, regs == gen8_regs, regs, num); + if (!i915_mmio_reg_offset(rb.reg)) + continue; + + intel_uncore_write_fw(uncore, rb.reg, rb.bit); + awake |= engine->mask; + } + + for_each_engine_masked(engine, gt, awake, tmp) { + struct reg_and_bit rb; + /* * HW architecture suggest typical invalidation time at 40us, * with pessimistic cases up to 100us and a recommendation to @@ -1252,13 +1269,8 @@ void intel_gt_invalidate_tlbs(struct intel_gt *gt) */ const unsigned int timeout_us = 100; const unsigned int timeout_ms = 4; - struct reg_and_bit rb; rb = get_reg_and_bit(engine, regs == gen8_regs, regs, num); - if (!i915_mmio_reg_offset(rb.reg)) - continue; - - intel_uncore_write_fw(uncore, rb.reg, rb.bit); if (__intel_wait_for_register_fw(uncore, rb.reg, rb.bit, 0, timeout_us, timeout_ms, diff --git a/drivers/gpu/drm/i915/gt/intel_gt_pm.h b/drivers/gpu/drm/i915/gt/intel_gt_pm.h index bc898df7a48c..a334787a4939 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt_pm.h +++ b/drivers/gpu/drm/i915/gt/intel_gt_pm.h @@ -55,6 +55,9 @@ static inline void intel_gt_pm_might_put(struct intel_gt *gt) for (tmp = 1, intel_gt_pm_get(gt); tmp; \ intel_gt_pm_put(gt), tmp = 0) +#define with_intel_gt_pm_if_awake(gt, wf) \ + for (wf = intel_gt_pm_get_if_awake(gt); wf; intel_gt_pm_put_async(gt), wf = 0) + static inline int intel_gt_pm_wait_for_idle(struct intel_gt *gt) { return intel_wakeref_wait_for_idle(>->wakeref); From patchwork Wed Jun 15 15:27:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 12882558 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A87E0CCA473 for ; Wed, 15 Jun 2022 15:28:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 897E611222C; 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Wed, 15 Jun 2022 16:27:42 +0100 From: Mauro Carvalho Chehab To: Date: Wed, 15 Jun 2022 16:27:36 +0100 Message-Id: <653bf9815d562f02c7247c6b66b85b243f3172e7.1655306128.git.mchehab@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: References: MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 2/6] drm/i915/gt: Invalidate TLB of the OA unit at TLB invalidations X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , dri-devel@lists.freedesktop.org, Chris Wilson , Matthew Auld , Dave Airlie , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , intel-gfx@lists.freedesktop.org, Lucas De Marchi , Thomas Hellstrom , Rodrigo Vivi , Mauro Carvalho Chehab , mauro.chehab@linux.intel.com, =?utf-8?q?Micha=C5=82_Winiarski?= , linux-kernel@vger.kernel.org, stable@vger.kernel.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Chris Wilson On gen12 HW, ensure that the TLB of the OA unit is also invalidated as just invalidating the TLB of an engine is not enough. Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store") Signed-off-by: Chris Wilson Cc: Fei Yang Cc: Andi Shyti Cc: stable@vger.kernel.org Acked-by: Thomas Hellström Signed-off-by: Mauro Carvalho Chehab Reviewed-by: Andi Shyti --- See [PATCH 0/6] at: https://lore.kernel.org/all/cover.1655306128.git.mchehab@kernel.org/ drivers/gpu/drm/i915/gt/intel_gt.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index d5ed6a6ac67c..61b7ec5118f9 100644 --- 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" @@ -1259,6 +1260,15 @@ void intel_gt_invalidate_tlbs(struct intel_gt *gt) 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); + for_each_engine_masked(engine, gt, awake, tmp) { struct reg_and_bit rb; From patchwork Wed Jun 15 15:27:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 12882556 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id E744BC43334 for ; Wed, 15 Jun 2022 15:28:07 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 1D052112243; Wed, 15 Jun 2022 15:27:51 +0000 (UTC) Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by gabe.freedesktop.org (Postfix) with ESMTPS id EE8A4112185; Wed, 15 Jun 2022 15:27:48 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 4EF2DB81F0C; Wed, 15 Jun 2022 15:27:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id ECDEDC34115; Wed, 15 Jun 2022 15:27:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1655306866; bh=d5dFQ9NHsAkSm+gLQzVN8kPNqSNsxZsVoyo0jFhjNL0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LXQf8xhEcd/2SP9lwnz0ukumi2OpBNyaaWzqoWEweJNDGmokgwGwt3y1sppwNHyQ7 Rzxzuq4qly/kJRh9TpXSJs/vZ4SSwYySPo6oCtR3lSb9i2ZGukCYt4ukqKgYmFIxCi 4RYwiBl2BDFOyJEqVGqfPdTjg/wDJ2XcvxfPYlQ/2GwAx3ebFWcSy330pPk76hRvDv m1eLCgWxxKsmve7jSKKvt972JvLb/DQ1dXV3QlwxS2UNwbNxjFozXlJyyu8o8WPTFV KO/BfNu64ZOcJb9+Gdm3qMvPUeiwovYMC/uqNJ7oIVn1Y+/K4J48asEamxxyleAP/i 6fvv0mYBklH9w== Received: from mchehab by mail.kernel.org with local (Exim 4.95) (envelope-from ) id 1o1Uvm-00A4Jj-EX; Wed, 15 Jun 2022 16:27:42 +0100 From: Mauro Carvalho Chehab To: Date: Wed, 15 Jun 2022 16:27:37 +0100 Message-Id: <9d9e663ca8e97becf04e1d4c8cb8a9a1f397a5f1.1655306128.git.mchehab@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: References: MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 3/6] drm/i915/gt: Skip TLB invalidations once wedged X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , dri-devel@lists.freedesktop.org, Chris Wilson , Matthew Auld , Dave Airlie , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , intel-gfx@lists.freedesktop.org, Lucas De Marchi , Thomas Hellstrom , Rodrigo Vivi , Mauro Carvalho Chehab , mauro.chehab@linux.intel.com, =?utf-8?q?Micha=C5=82_Winiarski?= , linux-kernel@vger.kernel.org, stable@vger.kernel.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Chris Wilson Skip all further TLB invalidations once the device is wedged and had been reset, as, on such cases, it can no longer process instructions on the GPU and the user no longer has access to the TLB's in each engine. Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store") Signed-off-by: Chris Wilson Cc: Fei Yang Cc: Andi Shyti Cc: stable@vger.kernel.org Acked-by: Thomas Hellström Signed-off-by: Mauro Carvalho Chehab Reviewed-by: Andi Shyti --- See [PATCH 0/6] at: https://lore.kernel.org/all/cover.1655306128.git.mchehab@kernel.org/ drivers/gpu/drm/i915/gt/intel_gt.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index 61b7ec5118f9..fb4fd5273ca4 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.c +++ b/drivers/gpu/drm/i915/gt/intel_gt.c @@ -1226,6 +1226,9 @@ void intel_gt_invalidate_tlbs(struct intel_gt *gt) if (I915_SELFTEST_ONLY(gt->awake == -ENODEV)) return; + if (intel_gt_is_wedged(gt)) + return; + if (GRAPHICS_VER(i915) == 12) { regs = gen12_regs; num = ARRAY_SIZE(gen12_regs); From patchwork Wed Jun 15 15:27:38 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 12882555 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5FABCC43334 for ; Wed, 15 Jun 2022 15:28:02 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 32FA5112215; Wed, 15 Jun 2022 15:27:49 +0000 (UTC) Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id A925D1121DD; Wed, 15 Jun 2022 15:27:47 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 347EB61728; Wed, 15 Jun 2022 15:27:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 075C2C341C4; Wed, 15 Jun 2022 15:27:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1655306866; bh=ArrWWi9aGs9TPTpy73ldENPFG9RCYJiCftXoVPyfiXA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=g+Z9a8tBUvrdOq9En5CSui7C1egHykyAomklROUSNevyZlUzrxdBtW+8Jg/Sbs3dx B/frSxNCMCV1HpkQb3FUy9yPEHvE/C4Fgcscb6nwZk2wud73DWJQmGG+ZnZeaMqoqj S4tTuphrd2FjPf2ytW5WMFAYIzf4OoLS6qhqVzgqnTBXWADmBbQnxh9XrDdAC5v4o8 DKszVAokucAtHdAzZu2vvm0TGcdwwfuXbJEyhSwPMcZQ73CL7YMWu1oShtibuLPhCx +43Tz0HKhqsADIEkozMT7BH7OSAxi6O3sxqaB4RdVWT2S1xvBhG2DqLK/O3jJNGX25 2jkOkUinAk7vQ== Received: from mchehab by mail.kernel.org with local (Exim 4.95) (envelope-from ) id 1o1Uvm-00A4Jm-FD; Wed, 15 Jun 2022 16:27:42 +0100 From: Mauro Carvalho Chehab To: Date: Wed, 15 Jun 2022 16:27:38 +0100 Message-Id: <387b9a8d3e719ad2db4fce56c0bfc0f909fd6df6.1655306128.git.mchehab@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: References: MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 4/6] drm/i915/gt: Only invalidate TLBs exposed to user manipulation X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mauro.chehab@linux.intel.com, =?utf-8?q?Thomas_Hellstr=C3=B6m?= , David Airlie , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Chris Wilson , Thomas Hellstrom , Rodrigo Vivi , Dave Airlie , stable@vger.kernel.org, Mauro Carvalho Chehab , intel-gfx@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Chris Wilson Don't flush TLBs when the buffer is only used in the GGTT under full control of the kernel, as there's no risk of of concurrent access and stale access from prefetch. We only need to invalidate the TLB if they are accessible by the user. Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store") Signed-off-by: Chris Wilson Cc: Fei Yang Cc: Andi Shyti Cc: stable@vger.kernel.org Acked-by: Thomas Hellström Signed-off-by: Mauro Carvalho Chehab Reviewed-by: Andi Shyti --- See [PATCH 0/6] at: https://lore.kernel.org/all/cover.1655306128.git.mchehab@kernel.org/ drivers/gpu/drm/i915/i915_vma.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c index 0bffb70b3c5f..7989986161e8 100644 --- a/drivers/gpu/drm/i915/i915_vma.c +++ b/drivers/gpu/drm/i915/i915_vma.c @@ -537,7 +537,8 @@ int i915_vma_bind(struct i915_vma *vma, bind_flags); } - set_bit(I915_BO_WAS_BOUND_BIT, &vma->obj->flags); + if (bind_flags & I915_VMA_LOCAL_BIND) + set_bit(I915_BO_WAS_BOUND_BIT, &vma->obj->flags); atomic_or(bind_flags, &vma->flags); return 0; From patchwork Wed Jun 15 15:27:39 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 12882552 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6C8A2C433EF for ; Wed, 15 Jun 2022 15:27:48 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DB3F11121E0; Wed, 15 Jun 2022 15:27:47 +0000 (UTC) Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id 217AA1121D4; Wed, 15 Jun 2022 15:27:47 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 9055061591; Wed, 15 Jun 2022 15:27:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id F1203C3411C; Wed, 15 Jun 2022 15:27:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1655306866; bh=BlDIEcKJ14OpD6+ESND5UCNOIyMjbS2bd2Y8eqJ8uxk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=F9MjNUhSfIW8LIsi3WBectn1THEMp6emsr48hbbUBq2P3TCS3ncW61UNYtleA9Knt IxxtwpahQvzmOqagK7VYFtPf3ANq/H27tb65repDfjjs3Sf+RMG4fI0RH5bWBk0sDb Ev4qrU/xSHXtHUr8+dGV980TkCrkOBq206yN7HUvhTWOwhIATeZikMwpUHhFWKakbW obpNFsin/mwnj2cyGt4iBEf/unFNA0BLc8H5PxONTr2RgUnMlTlekmnPHeKHHJUs+F bPobjAueges7heOGy0Xt7zGXXx9NFJCCfQAk0TGNRq6k0WSOf9jvnGn92WhMk6WyOR MniWUE7lV7lbA== Received: from mchehab by mail.kernel.org with local (Exim 4.95) (envelope-from ) id 1o1Uvm-00A4Jp-Fz; Wed, 15 Jun 2022 16:27:42 +0100 From: Mauro Carvalho Chehab To: Date: Wed, 15 Jun 2022 16:27:39 +0100 Message-Id: <5ee647f243a774927ec328bfca8212abc4957909.1655306128.git.mchehab@kernel.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: References: MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 5/6] drm/i915/gt: Serialize GRDOM access between multiple engine resets X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , dri-devel@lists.freedesktop.org, Chris Wilson , Chris Wilson , Dave Airlie , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Andi Shyti , intel-gfx@lists.freedesktop.org, Thomas Hellstrom , Rodrigo Vivi , Mauro Carvalho Chehab , mauro.chehab@linux.intel.com, linux-kernel@vger.kernel.org, stable@vger.kernel.org, Tejas Upadhyay Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Chris Wilson Don't allow two engines to be reset in parallel, as they would both try to select a reset bit (and send requests to common registers) and wait on that register, at the same time. Serialize control of the reset requests/acks using the uncore->lock, which will also ensure that no other GT state changes at the same time as the actual reset. Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store") Reported-by: Mika Kuoppala Signed-off-by: Chris Wilson Cc: Mika Kuoppala Cc: Andi Shyti Cc: stable@vger.kernel.org Acked-by: Thomas Hellström Signed-off-by: Mauro Carvalho Chehab Reviewed-by: Tvrtko Ursulin Reviewed-by: Andi Shyti --- See [PATCH 0/6] at: https://lore.kernel.org/all/cover.1655306128.git.mchehab@kernel.org/ drivers/gpu/drm/i915/gt/intel_reset.c | 37 ++++++++++++++++++++------- 1 file changed, 28 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_reset.c b/drivers/gpu/drm/i915/gt/intel_reset.c index a5338c3fde7a..c68d36fb5bbd 100644 --- a/drivers/gpu/drm/i915/gt/intel_reset.c +++ b/drivers/gpu/drm/i915/gt/intel_reset.c @@ -300,9 +300,9 @@ static int gen6_hw_domain_reset(struct intel_gt *gt, u32 hw_domain_mask) return err; } -static int gen6_reset_engines(struct intel_gt *gt, - intel_engine_mask_t engine_mask, - unsigned int retry) +static int __gen6_reset_engines(struct intel_gt *gt, + intel_engine_mask_t engine_mask, + unsigned int retry) { struct intel_engine_cs *engine; u32 hw_mask; @@ -321,6 +321,20 @@ static int gen6_reset_engines(struct intel_gt *gt, return gen6_hw_domain_reset(gt, hw_mask); } +static int gen6_reset_engines(struct intel_gt *gt, + intel_engine_mask_t engine_mask, + unsigned int retry) +{ + unsigned long flags; + int ret; + + spin_lock_irqsave(>->uncore->lock, flags); + ret = __gen6_reset_engines(gt, engine_mask, retry); + spin_unlock_irqrestore(>->uncore->lock, flags); + + return ret; +} + static struct intel_engine_cs *find_sfc_paired_vecs_engine(struct intel_engine_cs *engine) { int vecs_id; @@ -487,9 +501,9 @@ static void gen11_unlock_sfc(struct intel_engine_cs *engine) rmw_clear_fw(uncore, sfc_lock.lock_reg, sfc_lock.lock_bit); } -static int gen11_reset_engines(struct intel_gt *gt, - intel_engine_mask_t engine_mask, - unsigned int retry) +static int __gen11_reset_engines(struct intel_gt *gt, + intel_engine_mask_t engine_mask, + unsigned int retry) { struct intel_engine_cs *engine; intel_engine_mask_t tmp; @@ -583,8 +597,11 @@ static int gen8_reset_engines(struct intel_gt *gt, struct intel_engine_cs *engine; const bool reset_non_ready = retry >= 1; intel_engine_mask_t tmp; + unsigned long flags; int ret; + spin_lock_irqsave(>->uncore->lock, flags); + for_each_engine_masked(engine, gt, engine_mask, tmp) { ret = gen8_engine_reset_prepare(engine); if (ret && !reset_non_ready) @@ -612,17 +629,19 @@ static int gen8_reset_engines(struct intel_gt *gt, * This is best effort, so ignore any error from the initial reset. */ if (IS_DG2(gt->i915) && engine_mask == ALL_ENGINES) - gen11_reset_engines(gt, gt->info.engine_mask, 0); + __gen11_reset_engines(gt, gt->info.engine_mask, 0); if (GRAPHICS_VER(gt->i915) >= 11) - ret = gen11_reset_engines(gt, engine_mask, retry); + ret = __gen11_reset_engines(gt, engine_mask, retry); else - ret = gen6_reset_engines(gt, engine_mask, retry); + ret = __gen6_reset_engines(gt, engine_mask, retry); skip_reset: for_each_engine_masked(engine, gt, engine_mask, tmp) gen8_engine_reset_cancel(engine); + spin_unlock_irqrestore(>->uncore->lock, flags); + return ret; } From patchwork Wed Jun 15 15:27:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 12882553 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0A6FFC43334 for ; Wed, 15 Jun 2022 15:27:56 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 70D271121B6; Wed, 15 Jun 2022 15:27:48 +0000 (UTC) Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3876B1121DD; Wed, 15 Jun 2022 15:27:47 +0000 (UTC) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 993C3616B5; Wed, 15 Jun 2022 15:27:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 02093C385A5; Wed, 15 Jun 2022 15:27:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1655306866; bh=7pc/xKe4ZdwnskrQCRUD+TTNRE6A+ErRUxrsSCmYE1E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Qaq1+tBx1+bt4SshGdEjpnAntGkki8cqcHlFENHDJujz41uB5g3hWZyTnPexsguLs IH68RjS9AS+BlNt1b5VYGzSm7Q4RPHbtjNFW2heHi2/37cayJje7Vrmd8/Zhr1fxGZ XOvEXtxq81DyZaok2AIhQUEXMGlUv0DJ6t3oYpM6Psf/PocxKX47EctWpGmx4xEFnb Oy6nHDBgLSzWgDNbHOMsIIlK3ho5hrnNtl/Yaz3TwniC4u4VIA7qBxqDZ/YM4gGRYS 6btexI/QV2/Knts39rsqhcwp4L4SI1D8XFHaEVlk2foWx+I8XlNcYIxp3STyq98n95 Hv5kWhYH6N68w== Received: from mchehab by mail.kernel.org with local (Exim 4.95) (envelope-from ) id 1o1Uvm-00A4Js-Gn; Wed, 15 Jun 2022 16:27:42 +0100 From: Mauro Carvalho Chehab To: Date: Wed, 15 Jun 2022 16:27:40 +0100 Message-Id: X-Mailer: git-send-email 2.36.1 In-Reply-To: References: MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 6/6] drm/i915/gt: Serialize TLB invalidates with GT resets X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: David Airlie , dri-devel@lists.freedesktop.org, Chris Wilson , Matthew Auld , Dave Airlie , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , intel-gfx@lists.freedesktop.org, Lucas De Marchi , Thomas Hellstrom , Rodrigo Vivi , Mauro Carvalho Chehab , mauro.chehab@linux.intel.com, =?utf-8?q?Micha=C5=82_Winiarski?= , linux-kernel@vger.kernel.org, stable@vger.kernel.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Chris Wilson Avoid trying to invalidate the TLB in the middle of performing an engine reset, as this may result in the reset timing out. Currently, the TLB invalidate is only serialised by its own mutex, forgoing the uncore lock, but we can take the uncore->lock as well to serialise the mmio access, thereby serialising with the GDRST. Tested on a NUC5i7RYB, BIOS RYBDWi35.86A.0380.2019.0517.1530 with i915 selftest/hangcheck. Fixes: 7938d61591d3 ("drm/i915: Flush TLBs before releasing backing store") Reported-by: Mauro Carvalho Chehab Tested-by: Mauro Carvalho Chehab Reviewed-by: Mauro Carvalho Chehab Signed-off-by: Chris Wilson Cc: Tvrtko Ursulin Cc: stable@vger.kernel.org Acked-by: Thomas Hellström Signed-off-by: Mauro Carvalho Chehab Reviewed-by: Andi Shyti --- See [PATCH 0/6] at: https://lore.kernel.org/all/cover.1655306128.git.mchehab@kernel.org/ drivers/gpu/drm/i915/gt/intel_gt.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c index fb4fd5273ca4..33eb93586858 100644 --- a/drivers/gpu/drm/i915/gt/intel_gt.c +++ b/drivers/gpu/drm/i915/gt/intel_gt.c @@ -1248,6 +1248,8 @@ void intel_gt_invalidate_tlbs(struct intel_gt *gt) mutex_lock(>->tlb_invalidate_lock); intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL); + spin_lock_irq(&uncore->lock); /* seralise invalidate with GT reset */ + awake = 0; for_each_engine(engine, gt, id) { struct reg_and_bit rb; @@ -1272,6 +1274,8 @@ void intel_gt_invalidate_tlbs(struct intel_gt *gt) 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) { struct reg_and_bit rb;