From patchwork Wed Jul 17 18:06:19 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tvrtko Ursulin X-Patchwork-Id: 11048139 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D5A9B746 for ; Wed, 17 Jul 2019 18:06:33 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C6557286FD for ; Wed, 17 Jul 2019 18:06:33 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BA4CB28736; Wed, 17 Jul 2019 18:06:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,HK_RANDOM_FROM, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3EB62286FD for ; Wed, 17 Jul 2019 18:06:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 52D05897B5; Wed, 17 Jul 2019 18:06:32 +0000 (UTC) X-Original-To: Intel-gfx@lists.freedesktop.org Delivered-To: Intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id B02DD897B5 for ; Wed, 17 Jul 2019 18:06:29 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Jul 2019 11:06:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,275,1559545200"; d="scan'208";a="343110829" Received: from esulliva-mobl.ger.corp.intel.com (HELO localhost.localdomain) ([10.251.94.109]) by orsmga005.jf.intel.com with ESMTP; 17 Jul 2019 11:06:28 -0700 From: Tvrtko Ursulin To: Intel-gfx@lists.freedesktop.org Date: Wed, 17 Jul 2019 19:06:19 +0100 Message-Id: <20190717180624.20354-2-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190717180624.20354-1-tvrtko.ursulin@linux.intel.com> References: <20190717180624.20354-1-tvrtko.ursulin@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 1/6] drm/i915: Fix GEN8_MCR_SELECTOR programming X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP From: Tvrtko Ursulin fls returns bit positions starting from one for the lsb and the MCR register expects zero based (sub)slice addressing. Incorrent MCR programming can have the effect of directing MMIO reads of registers in the 0xb100-0xb3ff range to invalid subslice returning zeroes instead of actual content. Signed-off-by: Tvrtko Ursulin Fixes: 1e40d4aea57b ("drm/i915/cnl: Implement WaProgramMgsrForCorrectSliceSpecificMmioReads") Reviewed-by: Chris Wilson Reviewed-by: Stuart Summers --- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index c0bc9cb7f228..6f93caf7a5a1 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -962,9 +962,14 @@ const char *i915_cache_level_str(struct drm_i915_private *i915, int type) u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv) { const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu; + unsigned int slice = fls(sseu->slice_mask) - 1; + unsigned int subslice; u32 mcr_s_ss_select; - u32 slice = fls(sseu->slice_mask); - u32 subslice = fls(sseu->subslice_mask[slice]); + + GEM_BUG_ON(slice >= ARRAY_SIZE(sseu->subslice_mask)); + subslice = fls(sseu->subslice_mask[slice]); + GEM_BUG_ON(!subslice); + subslice--; if (IS_GEN(dev_priv, 10)) mcr_s_ss_select = GEN8_MCR_SLICE(slice) | From patchwork Wed Jul 17 18:06:20 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tvrtko Ursulin X-Patchwork-Id: 11048141 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BF709746 for ; Wed, 17 Jul 2019 18:06:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B0125286FD for ; Wed, 17 Jul 2019 18:06:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A458C28736; Wed, 17 Jul 2019 18:06:34 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,HK_RANDOM_FROM, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 597F0286FD for ; Wed, 17 Jul 2019 18:06:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 26DBF6E118; Wed, 17 Jul 2019 18:06:33 +0000 (UTC) X-Original-To: Intel-gfx@lists.freedesktop.org Delivered-To: Intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id A47CD6E118 for ; Wed, 17 Jul 2019 18:06:30 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Jul 2019 11:06:30 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,275,1559545200"; d="scan'208";a="343110834" Received: from esulliva-mobl.ger.corp.intel.com (HELO localhost.localdomain) ([10.251.94.109]) by orsmga005.jf.intel.com with ESMTP; 17 Jul 2019 11:06:29 -0700 From: Tvrtko Ursulin To: Intel-gfx@lists.freedesktop.org Date: Wed, 17 Jul 2019 19:06:20 +0100 Message-Id: <20190717180624.20354-3-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190717180624.20354-1-tvrtko.ursulin@linux.intel.com> References: <20190717180624.20354-1-tvrtko.ursulin@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 2/6] drm/i915: Trust programmed MCR in read_subslice_reg X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP From: Tvrtko Ursulin Instead of re-calculating the MCR selector in read_subslice_reg do the rwm on its existing value and restore it when done. This consolidates MCR programming to one place for cnl+, and avoids re-calculating its default value on older platforms during hangcheck. Signed-off-by: Tvrtko Ursulin Reviewed-by: Chris Wilson Reviewed-by: Stuart Summers --- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 37 ++++++++--------------- 1 file changed, 12 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index 6f93caf7a5a1..cc4d1826173d 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -989,27 +989,17 @@ read_subslice_reg(struct intel_engine_cs *engine, int slice, int subslice, { struct drm_i915_private *i915 = engine->i915; struct intel_uncore *uncore = engine->uncore; - u32 mcr_slice_subslice_mask; - u32 mcr_slice_subslice_select; - u32 default_mcr_s_ss_select; - u32 mcr; - u32 ret; + u32 mcr_mask, mcr_ss, mcr, old_mcr, val; enum forcewake_domains fw_domains; if (INTEL_GEN(i915) >= 11) { - mcr_slice_subslice_mask = GEN11_MCR_SLICE_MASK | - GEN11_MCR_SUBSLICE_MASK; - mcr_slice_subslice_select = GEN11_MCR_SLICE(slice) | - GEN11_MCR_SUBSLICE(subslice); + mcr_mask = GEN11_MCR_SLICE_MASK | GEN11_MCR_SUBSLICE_MASK; + mcr_ss = GEN11_MCR_SLICE(slice) | GEN11_MCR_SUBSLICE(subslice); } else { - mcr_slice_subslice_mask = GEN8_MCR_SLICE_MASK | - GEN8_MCR_SUBSLICE_MASK; - mcr_slice_subslice_select = GEN8_MCR_SLICE(slice) | - GEN8_MCR_SUBSLICE(subslice); + mcr_mask = GEN8_MCR_SLICE_MASK | GEN8_MCR_SUBSLICE_MASK; + mcr_ss = GEN8_MCR_SLICE(slice) | GEN8_MCR_SUBSLICE(subslice); } - default_mcr_s_ss_select = intel_calculate_mcr_s_ss_select(i915); - fw_domains = intel_uncore_forcewake_for_reg(uncore, reg, FW_REG_READ); fw_domains |= intel_uncore_forcewake_for_reg(uncore, @@ -1019,26 +1009,23 @@ read_subslice_reg(struct intel_engine_cs *engine, int slice, int subslice, spin_lock_irq(&uncore->lock); intel_uncore_forcewake_get__locked(uncore, fw_domains); - mcr = intel_uncore_read_fw(uncore, GEN8_MCR_SELECTOR); - - WARN_ON_ONCE((mcr & mcr_slice_subslice_mask) != - default_mcr_s_ss_select); + old_mcr = mcr = intel_uncore_read_fw(uncore, GEN8_MCR_SELECTOR); - mcr &= ~mcr_slice_subslice_mask; - mcr |= mcr_slice_subslice_select; + mcr &= ~mcr_mask; + mcr |= mcr_ss; intel_uncore_write_fw(uncore, GEN8_MCR_SELECTOR, mcr); - ret = intel_uncore_read_fw(uncore, reg); + val = intel_uncore_read_fw(uncore, reg); - mcr &= ~mcr_slice_subslice_mask; - mcr |= default_mcr_s_ss_select; + mcr &= ~mcr_mask; + mcr |= old_mcr & mcr_mask; intel_uncore_write_fw(uncore, GEN8_MCR_SELECTOR, mcr); intel_uncore_forcewake_put__locked(uncore, fw_domains); spin_unlock_irq(&uncore->lock); - return ret; + return val; } /* NB: please notice the memset */ From patchwork Wed Jul 17 18:06:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Tvrtko Ursulin X-Patchwork-Id: 11048145 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E7911138D for ; Wed, 17 Jul 2019 18:06:40 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D75D7286FD for ; Wed, 17 Jul 2019 18:06:40 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CB81928736; Wed, 17 Jul 2019 18:06:40 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,HK_RANDOM_FROM, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 42072286FD for ; Wed, 17 Jul 2019 18:06:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B72C26E290; Wed, 17 Jul 2019 18:06:39 +0000 (UTC) X-Original-To: Intel-gfx@lists.freedesktop.org Delivered-To: Intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 687FD6E118 for ; Wed, 17 Jul 2019 18:06:32 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Jul 2019 11:06:32 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,275,1559545200"; d="scan'208";a="343110839" Received: from esulliva-mobl.ger.corp.intel.com (HELO localhost.localdomain) ([10.251.94.109]) by orsmga005.jf.intel.com with ESMTP; 17 Jul 2019 11:06:30 -0700 From: Tvrtko Ursulin To: Intel-gfx@lists.freedesktop.org Date: Wed, 17 Jul 2019 19:06:21 +0100 Message-Id: <20190717180624.20354-4-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190717180624.20354-1-tvrtko.ursulin@linux.intel.com> References: <20190717180624.20354-1-tvrtko.ursulin@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 3/6] drm/i915: Fix and improve MCR selection logic X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP From: Tvrtko Ursulin A couple issues were present in this code: 1. fls() usage was incorrect causing off by one in subslice mask lookup, which in other words means subslice mask of all zeroes is always used (subslice mask of a slice which is not present, or even out of bounds array access), rendering the checks in wa_init_mcr either futile or random. 2. Condition in WARN_ON was not correct. It is doing a bitwise and operation between a positive (present subslices) and negative mask (disabled L3 banks). This means that with corrected fls() usage the assert would always incorrectly fail. We could fix this by inverting the fuse bits in the check, but instead do one better and improve the code so it not only asserts, but finds the first common index between the two masks and only warns if no such index can be found. v2: * Simplify check for logic and redability. * Improve commentary explaining what is really happening ie. what the assert is really trying to check and why. v3: * Find first common index instead of just asserting. Signed-off-by: Tvrtko Ursulin Fixes: fe864b76c2ab ("drm/i915: Implement WaProgramMgsrForL3BankSpecificMmioReads") Reviewed-by: Chris Wilson # v1 Cc: Michał Winiarski Cc: Stuart Summers Reviewed-by: Chris Wilson Reviewed-by: Stuart Summers --- drivers/gpu/drm/i915/gt/intel_engine_cs.c | 24 ------ drivers/gpu/drm/i915/gt/intel_workarounds.c | 90 +++++++++++---------- drivers/gpu/drm/i915/i915_drv.h | 2 - 3 files changed, 49 insertions(+), 67 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index cc4d1826173d..65cbf1d9118d 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -959,30 +959,6 @@ const char *i915_cache_level_str(struct drm_i915_private *i915, int type) } } -u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv) -{ - const struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu; - unsigned int slice = fls(sseu->slice_mask) - 1; - unsigned int subslice; - u32 mcr_s_ss_select; - - GEM_BUG_ON(slice >= ARRAY_SIZE(sseu->subslice_mask)); - subslice = fls(sseu->subslice_mask[slice]); - GEM_BUG_ON(!subslice); - subslice--; - - if (IS_GEN(dev_priv, 10)) - mcr_s_ss_select = GEN8_MCR_SLICE(slice) | - GEN8_MCR_SUBSLICE(subslice); - else if (INTEL_GEN(dev_priv) >= 11) - mcr_s_ss_select = GEN11_MCR_SLICE(slice) | - GEN11_MCR_SUBSLICE(subslice); - else - mcr_s_ss_select = 0; - - return mcr_s_ss_select; -} - static u32 read_subslice_reg(struct intel_engine_cs *engine, int slice, int subslice, i915_reg_t reg) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 3b1fc7c8faa8..c2325b7ecf8d 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -762,7 +762,10 @@ static void wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal) { const struct sseu_dev_info *sseu = &RUNTIME_INFO(i915)->sseu; - u32 mcr_slice_subslice_mask; + unsigned int slice, subslice; + u32 l3_en, mcr, mcr_mask; + + GEM_BUG_ON(INTEL_GEN(i915) < 10); /* * WaProgramMgsrForL3BankSpecificMmioReads: cnl,icl @@ -770,42 +773,7 @@ wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal) * the case, we might need to program MCR select to a valid L3Bank * by default, to make sure we correctly read certain registers * later on (in the range 0xB100 - 0xB3FF). - * This might be incompatible with - * WaProgramMgsrForCorrectSliceSpecificMmioReads. - * Fortunately, this should not happen in production hardware, so - * we only assert that this is the case (instead of implementing - * something more complex that requires checking the range of every - * MMIO read). - */ - if (INTEL_GEN(i915) >= 10 && - is_power_of_2(sseu->slice_mask)) { - /* - * read FUSE3 for enabled L3 Bank IDs, if L3 Bank matches - * enabled subslice, no need to redirect MCR packet - */ - u32 slice = fls(sseu->slice_mask); - u32 fuse3 = - intel_uncore_read(&i915->uncore, GEN10_MIRROR_FUSE3); - u8 ss_mask = sseu->subslice_mask[slice]; - - u8 enabled_mask = (ss_mask | ss_mask >> - GEN10_L3BANK_PAIR_COUNT) & GEN10_L3BANK_MASK; - u8 disabled_mask = fuse3 & GEN10_L3BANK_MASK; - - /* - * Production silicon should have matched L3Bank and - * subslice enabled - */ - WARN_ON((enabled_mask & disabled_mask) != enabled_mask); - } - - if (INTEL_GEN(i915) >= 11) - mcr_slice_subslice_mask = GEN11_MCR_SLICE_MASK | - GEN11_MCR_SUBSLICE_MASK; - else - mcr_slice_subslice_mask = GEN8_MCR_SLICE_MASK | - GEN8_MCR_SUBSLICE_MASK; - /* + * * WaProgramMgsrForCorrectSliceSpecificMmioReads:cnl,icl * Before any MMIO read into slice/subslice specific registers, MCR * packet control register needs to be programmed to point to any @@ -815,11 +783,51 @@ wa_init_mcr(struct drm_i915_private *i915, struct i915_wa_list *wal) * are consistent across s/ss in almost all cases. In the rare * occasions, such as INSTDONE, where this value is dependent * on s/ss combo, the read should be done with read_subslice_reg. + * + * Since GEN8_MCR_SELECTOR contains dual-purpose bits which select both + * to which subslice, or to which L3 bank, the respective mmio reads + * will go, we have to find a common index which works for both + * accesses. + * + * Case where we cannot find a common index fortunately should not + * happen in production hardware, so we only emit a warning instead of + * implementing something more complex that requires checking the range + * of every MMIO read. */ - wa_write_masked_or(wal, - GEN8_MCR_SELECTOR, - mcr_slice_subslice_mask, - intel_calculate_mcr_s_ss_select(i915)); + + if (INTEL_GEN(i915) >= 10 && is_power_of_2(sseu->slice_mask)) { + u32 l3_fuse = + intel_uncore_read(&i915->uncore, GEN10_MIRROR_FUSE3) & + GEN10_L3BANK_MASK; + + DRM_DEBUG_DRIVER("L3 fuse = %x\n", l3_fuse); + l3_en = ~(l3_fuse << GEN10_L3BANK_PAIR_COUNT | l3_fuse); + } else { + l3_en = ~0; + } + + slice = fls(sseu->slice_mask) - 1; + GEM_BUG_ON(slice >= ARRAY_SIZE(sseu->subslice_mask)); + subslice = fls(l3_en & sseu->subslice_mask[slice]); + if (!subslice) { + DRM_WARN("No common index found between subslice mask %x and L3 bank mask %x!\n", + sseu->subslice_mask[slice], l3_en); + subslice = fls(l3_en); + WARN_ON(!subslice); + } + subslice--; + + if (INTEL_GEN(i915) >= 11) { + mcr = GEN11_MCR_SLICE(slice) | GEN11_MCR_SUBSLICE(subslice); + mcr_mask = GEN11_MCR_SLICE_MASK | GEN11_MCR_SUBSLICE_MASK; + } else { + mcr = GEN8_MCR_SLICE(slice) | GEN8_MCR_SUBSLICE(subslice); + mcr_mask = GEN8_MCR_SLICE_MASK | GEN8_MCR_SUBSLICE_MASK; + } + + DRM_DEBUG_DRIVER("MCR slice/subslice = %x\n", mcr); + + wa_write_masked_or(wal, GEN8_MCR_SELECTOR, mcr_mask, mcr); } static void diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 78c1ed6e17b2..0e44cc4b2ca1 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2389,8 +2389,6 @@ void i915_driver_remove(struct drm_device *dev); void intel_engine_init_hangcheck(struct intel_engine_cs *engine); int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool on); -u32 intel_calculate_mcr_s_ss_select(struct drm_i915_private *dev_priv); - static inline bool intel_gvt_active(struct drm_i915_private *dev_priv) { return dev_priv->gvt; From patchwork Wed Jul 17 18:06:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tvrtko Ursulin X-Patchwork-Id: 11048143 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 81E02138D for ; Wed, 17 Jul 2019 18:06:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 72451286FD for ; Wed, 17 Jul 2019 18:06:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 66D4C28736; Wed, 17 Jul 2019 18:06:38 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,HK_RANDOM_FROM, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 1A9D4286FD for ; Wed, 17 Jul 2019 18:06:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9EC636E11B; Wed, 17 Jul 2019 18:06:37 +0000 (UTC) X-Original-To: Intel-gfx@lists.freedesktop.org Delivered-To: Intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 87E4B6E237 for ; Wed, 17 Jul 2019 18:06:33 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Jul 2019 11:06:33 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,275,1559545200"; d="scan'208";a="343110842" Received: from esulliva-mobl.ger.corp.intel.com (HELO localhost.localdomain) ([10.251.94.109]) by orsmga005.jf.intel.com with ESMTP; 17 Jul 2019 11:06:32 -0700 From: Tvrtko Ursulin To: Intel-gfx@lists.freedesktop.org Date: Wed, 17 Jul 2019 19:06:22 +0100 Message-Id: <20190717180624.20354-5-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190717180624.20354-1-tvrtko.ursulin@linux.intel.com> References: <20190717180624.20354-1-tvrtko.ursulin@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 4/6] drm/i915: Skip CS verification of L3 bank registers X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP From: Tvrtko Ursulin Access to 0xb100 - 0xb3ff mmio range is controlled by the MCR selector which only affects CPU MMIO. Therefore these registers cannot be realiably read with MI_SRM from the command streamer so skip their verification. Signed-off-by: Tvrtko Ursulin Reviewed-by: Chris Wilson --- drivers/gpu/drm/i915/gt/intel_workarounds.c | 38 ++++++++++++++++++--- 1 file changed, 33 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index c2325b7ecf8d..619d42a2b81b 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -1436,26 +1436,50 @@ create_scratch(struct i915_address_space *vm, int count) return ERR_PTR(err); } +static bool mcr_range(struct drm_i915_private *i915, u32 offset) +{ + /* + * Registers in this range are affected by the MCR selector + * which only controls CPU initiated MMIO. Routing does not + * work for CS access so we cannot verify them on this path. + */ + if (INTEL_GEN(i915) >= 8 && (offset >= 0xb100 && offset <= 0xb3ff)) + return true; + + return false; +} + static int wa_list_srm(struct i915_request *rq, const struct i915_wa_list *wal, struct i915_vma *vma) { + struct drm_i915_private *i915 = rq->i915; + unsigned int i, count = 0; const struct i915_wa *wa; - unsigned int i; u32 srm, *cs; srm = MI_STORE_REGISTER_MEM | MI_SRM_LRM_GLOBAL_GTT; - if (INTEL_GEN(rq->i915) >= 8) + if (INTEL_GEN(i915) >= 8) srm++; - cs = intel_ring_begin(rq, 4 * wal->count); + for (i = 0, wa = wal->list; i < wal->count; i++, wa++) { + if (!mcr_range(i915, i915_mmio_reg_offset(wa->reg))) + count++; + } + + cs = intel_ring_begin(rq, 4 * count); if (IS_ERR(cs)) return PTR_ERR(cs); for (i = 0, wa = wal->list; i < wal->count; i++, wa++) { + u32 offset = i915_mmio_reg_offset(wa->reg); + + if (mcr_range(i915, offset)) + continue; + *cs++ = srm; - *cs++ = i915_mmio_reg_offset(wa->reg); + *cs++ = offset; *cs++ = i915_ggtt_offset(vma) + sizeof(u32) * i; *cs++ = 0; } @@ -1505,9 +1529,13 @@ static int engine_wa_list_verify(struct intel_context *ce, } err = 0; - for (i = 0, wa = wal->list; i < wal->count; i++, wa++) + for (i = 0, wa = wal->list; i < wal->count; i++, wa++) { + if (mcr_range(rq->i915, i915_mmio_reg_offset(wa->reg))) + continue; + if (!wa_verify(wa, results[i], wal->name, from)) err = -ENXIO; + } i915_gem_object_unpin_map(vma->obj); From patchwork Wed Jul 17 18:06:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tvrtko Ursulin X-Patchwork-Id: 11048147 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 962D8746 for ; Wed, 17 Jul 2019 18:06:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 868D3285E8 for ; Wed, 17 Jul 2019 18:06:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7AE9B286FD; Wed, 17 Jul 2019 18:06:47 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,HK_RANDOM_FROM, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2FF01285E8 for ; Wed, 17 Jul 2019 18:06:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BAA9D6E237; Wed, 17 Jul 2019 18:06:46 +0000 (UTC) X-Original-To: Intel-gfx@lists.freedesktop.org Delivered-To: Intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id 91BD76E237 for ; Wed, 17 Jul 2019 18:06:45 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Jul 2019 11:06:36 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,275,1559545200"; d="scan'208";a="343110848" Received: from esulliva-mobl.ger.corp.intel.com (HELO localhost.localdomain) ([10.251.94.109]) by orsmga005.jf.intel.com with ESMTP; 17 Jul 2019 11:06:33 -0700 From: Tvrtko Ursulin To: Intel-gfx@lists.freedesktop.org Date: Wed, 17 Jul 2019 19:06:23 +0100 Message-Id: <20190717180624.20354-6-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190717180624.20354-1-tvrtko.ursulin@linux.intel.com> References: <20190717180624.20354-1-tvrtko.ursulin@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 5/6] drm/i915/icl: Verify engine workarounds in GEN8_L3SQCREG4 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP From: Tvrtko Ursulin Having fixed the incorect MCR programming in an earlier patch, we can now stop ignoring read back of GEN8_L3SQCREG4 during engine workaround verification. Signed-off-by: Tvrtko Ursulin Reviewed-by: Chris Wilson --- drivers/gpu/drm/i915/gt/intel_workarounds.c | 27 +++++---------------- 1 file changed, 6 insertions(+), 21 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 619d42a2b81b..ff532ff5d574 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -177,19 +177,6 @@ wa_write_or(struct i915_wa_list *wal, i915_reg_t reg, u32 val) wa_write_masked_or(wal, reg, val, val); } -static void -ignore_wa_write_or(struct i915_wa_list *wal, i915_reg_t reg, u32 mask, u32 val) -{ - struct i915_wa wa = { - .reg = reg, - .mask = mask, - .val = val, - /* Bonkers HW, skip verifying */ - }; - - _wa_add(wal, &wa); -} - #define WA_SET_BIT_MASKED(addr, mask) \ wa_write_masked_or(wal, (addr), (mask), _MASKED_BIT_ENABLE(mask)) @@ -1260,10 +1247,9 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) _3D_CHICKEN3_AA_LINE_QUALITY_FIX_ENABLE); /* WaPipelineFlushCoherentLines:icl */ - ignore_wa_write_or(wal, - GEN8_L3SQCREG4, - GEN8_LQSC_FLUSH_COHERENT_LINES, - GEN8_LQSC_FLUSH_COHERENT_LINES); + wa_write_or(wal, + GEN8_L3SQCREG4, + GEN8_LQSC_FLUSH_COHERENT_LINES); /* * Wa_1405543622:icl @@ -1290,10 +1276,9 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) * Wa_1405733216:icl * Formerly known as WaDisableCleanEvicts */ - ignore_wa_write_or(wal, - GEN8_L3SQCREG4, - GEN11_LQSC_CLEAN_EVICT_DISABLE, - GEN11_LQSC_CLEAN_EVICT_DISABLE); + wa_write_or(wal, + GEN8_L3SQCREG4, + GEN11_LQSC_CLEAN_EVICT_DISABLE); /* WaForwardProgressSoftReset:icl */ wa_write_or(wal, From patchwork Wed Jul 17 18:06:24 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tvrtko Ursulin X-Patchwork-Id: 11048149 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 4C786138D for ; Wed, 17 Jul 2019 18:06:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3DCD2285E8 for ; Wed, 17 Jul 2019 18:06:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 32960286FD; Wed, 17 Jul 2019 18:06:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00,HK_RANDOM_FROM, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E9759285E8 for ; Wed, 17 Jul 2019 18:06:47 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 560286E294; Wed, 17 Jul 2019 18:06:47 +0000 (UTC) X-Original-To: Intel-gfx@lists.freedesktop.org Delivered-To: Intel-gfx@lists.freedesktop.org Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id AA32C6E293 for ; Wed, 17 Jul 2019 18:06:45 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Jul 2019 11:06:36 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,275,1559545200"; d="scan'208";a="343110858" Received: from esulliva-mobl.ger.corp.intel.com (HELO localhost.localdomain) ([10.251.94.109]) by orsmga005.jf.intel.com with ESMTP; 17 Jul 2019 11:06:36 -0700 From: Tvrtko Ursulin To: Intel-gfx@lists.freedesktop.org Date: Wed, 17 Jul 2019 19:06:24 +0100 Message-Id: <20190717180624.20354-7-tvrtko.ursulin@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190717180624.20354-1-tvrtko.ursulin@linux.intel.com> References: <20190717180624.20354-1-tvrtko.ursulin@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 6/6] drm/i915/icl: Add Wa_1409178092 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP From: Tvrtko Ursulin We were missing this workaround which can cause hangs if fine grained coherency was used. Signed-off-by: Tvrtko Ursulin Reviewed-by: Chris Wilson --- drivers/gpu/drm/i915/gt/intel_workarounds.c | 6 ++++++ drivers/gpu/drm/i915/i915_reg.h | 3 +++ 2 files changed, 9 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index ff532ff5d574..704ace01e7f5 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -1297,6 +1297,12 @@ rcs_engine_wa_init(struct intel_engine_cs *engine, struct i915_wa_list *wal) wa_write_or(wal, GEN7_SARCHKMD, GEN7_DISABLE_SAMPLER_PREFETCH); + + /* Wa_1409178092:icl */ + wa_write_masked_or(wal, + GEN11_SCRATCH2, + GEN11_COHERENT_PARTIAL_WRITE_MERGE_ENABLE, + 0); } if (IS_GEN_RANGE(i915, 9, 11)) { diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index fdd9bc01e694..24f2a52a2b42 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -7721,6 +7721,9 @@ enum { #define GEN7_L3SQCREG4 _MMIO(0xb034) #define L3SQ_URB_READ_CAM_MATCH_DISABLE (1 << 27) +#define GEN11_SCRATCH2 _MMIO(0xb140) +#define GEN11_COHERENT_PARTIAL_WRITE_MERGE_ENABLE (1 << 19) + #define GEN8_L3SQCREG4 _MMIO(0xb118) #define GEN11_LQSC_CLEAN_EVICT_DISABLE (1 << 6) #define GEN8_LQSC_RO_PERF_DIS (1 << 27)