From patchwork Fri Jul 17 01:57:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Umesh Nerlige Ramappa X-Patchwork-Id: 11668789 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 409251392 for ; Fri, 17 Jul 2020 01:57:25 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 2791B2076D for ; Fri, 17 Jul 2020 01:57:25 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2791B2076D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DA7BA6E320; Fri, 17 Jul 2020 01:57:19 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id D9B556E31C for ; Fri, 17 Jul 2020 01:57:17 +0000 (UTC) IronPort-SDR: GctIN5+uj3v8Ck2ZurX3wLBm/VdZdx2GZmQrnaT5WVO4HL1OpYL+ciVK3SXp97IDP6bis/VuL4 8jVRUKMnsVCg== X-IronPort-AV: E=McAfee;i="6000,8403,9684"; a="211063476" X-IronPort-AV: E=Sophos;i="5.75,361,1589266800"; d="scan'208";a="211063476" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Jul 2020 18:57:17 -0700 IronPort-SDR: H9zuFj0eVwejhJnSL5aMGGDcg5Sm0qTU4PdfdfuLeH1/E95XbSV6hZHXPyXBEZltuxNZaRp/OW Izzs3MS86IeQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,361,1589266800"; d="scan'208";a="269413414" Received: from orsosgc001.ra.intel.com ([10.23.184.150]) by fmsmga007.fm.intel.com with ESMTP; 16 Jul 2020 18:57:16 -0700 From: Umesh Nerlige Ramappa To: Lionel G Landwerlin , intel-gfx@lists.freedesktop.org Date: Thu, 16 Jul 2020 18:57:14 -0700 Message-Id: <20200717015716.37671-1-umesh.nerlige.ramappa@intel.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 1/3] drm/i915/perf: Whitelist OA report trigger registers 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Piotr Maciejewski OA reports can be triggered into the OA buffer by writing into the OAREPORTTRIG registers. Whitelist the registers to allow user to trigger reports. Signed-off-by: Piotr Maciejewski Signed-off-by: Umesh Nerlige Ramappa --- drivers/gpu/drm/i915/gt/intel_workarounds.c | 26 +++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 5726cd0a37e0..582a2c8cd219 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -1365,6 +1365,20 @@ whitelist_reg(struct i915_wa_list *wal, i915_reg_t reg) whitelist_reg_ext(wal, reg, RING_FORCE_TO_NONPRIV_ACCESS_RW); } +static void gen9_whitelist_build_performance_counters(struct i915_wa_list *w) +{ + /* OA buffer trigger report 2/6 used by performance query */ + whitelist_reg(w, OAREPORTTRIG2); + whitelist_reg(w, OAREPORTTRIG6); +} + +static void gen12_whitelist_build_performance_counters(struct i915_wa_list *w) +{ + /* OA buffer trigger report 2/6 used by performance query */ + whitelist_reg(w, GEN12_OAG_OAREPORTTRIG2); + whitelist_reg(w, GEN12_OAG_OAREPORTTRIG6); +} + static void gen9_whitelist_build(struct i915_wa_list *w) { /* WaVFEStateAfterPipeControlwithMediaStateClear:skl,bxt,glk,cfl */ @@ -1378,6 +1392,9 @@ static void gen9_whitelist_build(struct i915_wa_list *w) /* WaSendPushConstantsFromMMIO:skl,bxt */ whitelist_reg(w, COMMON_SLICE_CHICKEN2); + + /* Performance counters support */ + gen9_whitelist_build_performance_counters(w); } static void skl_whitelist_build(struct intel_engine_cs *engine) @@ -1471,6 +1488,9 @@ static void cnl_whitelist_build(struct intel_engine_cs *engine) /* WaEnablePreemptionGranularityControlByUMD:cnl */ whitelist_reg(w, GEN8_CS_CHICKEN1); + + /* Performance counters support */ + gen9_whitelist_build_performance_counters(w); } static void icl_whitelist_build(struct intel_engine_cs *engine) @@ -1500,6 +1520,9 @@ static void icl_whitelist_build(struct intel_engine_cs *engine) whitelist_reg_ext(w, PS_INVOCATION_COUNT, RING_FORCE_TO_NONPRIV_ACCESS_RD | RING_FORCE_TO_NONPRIV_RANGE_4); + + /* Performance counters support */ + gen9_whitelist_build_performance_counters(w); break; case VIDEO_DECODE_CLASS: @@ -1550,6 +1573,9 @@ static void tgl_whitelist_build(struct intel_engine_cs *engine) /* Wa_1806527549:tgl */ whitelist_reg(w, HIZ_CHICKEN); + + /* Performance counters support */ + gen12_whitelist_build_performance_counters(w); break; default: whitelist_reg_ext(w, From patchwork Fri Jul 17 01:57:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Umesh Nerlige Ramappa X-Patchwork-Id: 11668785 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0EB0B138C for ; Fri, 17 Jul 2020 01:57:22 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id E91B12076D for ; Fri, 17 Jul 2020 01:57:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E91B12076D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 96F606E31C; Fri, 17 Jul 2020 01:57:19 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 198F86E31D for ; Fri, 17 Jul 2020 01:57:18 +0000 (UTC) IronPort-SDR: Wdykg9yfXDVaHBE0Vpf5dAAuslEF8JHPntzk8o/JedFVgzB1dwIaek6Y/+h5k2jUJ+d4nz+WcM rWOeR0damU+Q== X-IronPort-AV: E=McAfee;i="6000,8403,9684"; a="211063477" X-IronPort-AV: E=Sophos;i="5.75,361,1589266800"; d="scan'208";a="211063477" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Jul 2020 18:57:17 -0700 IronPort-SDR: bT0egFN0TAe6uj786wm7IrbUbxVB5alNDPL530NiqlzjxHuITSvFsJYFZqOzInLjIa0u6G1+OI dHOhEDb8SUgA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,361,1589266800"; d="scan'208";a="269413417" Received: from orsosgc001.ra.intel.com ([10.23.184.150]) by fmsmga007.fm.intel.com with ESMTP; 16 Jul 2020 18:57:16 -0700 From: Umesh Nerlige Ramappa To: Lionel G Landwerlin , intel-gfx@lists.freedesktop.org Date: Thu, 16 Jul 2020 18:57:15 -0700 Message-Id: <20200717015716.37671-2-umesh.nerlige.ramappa@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200717015716.37671-1-umesh.nerlige.ramappa@intel.com> References: <20200717015716.37671-1-umesh.nerlige.ramappa@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 2/3] drm/i915/perf: Whitelist OA counter and buffer registers 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Piotr Maciejewski It is useful to have markers in the OA reports to identify triggered reports. Whitelist some OA counters that can be used as markers. A triggered report can be found faster if we can sample the HW tail and head registers when the report was triggered. Whitelist OA buffer specific registers. Signed-off-by: Piotr Maciejewski Signed-off-by: Umesh Nerlige Ramappa --- drivers/gpu/drm/i915/gt/intel_workarounds.c | 34 +++++++++++++++++++++ drivers/gpu/drm/i915/i915_reg.h | 15 +++++++++ 2 files changed, 49 insertions(+) diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c b/drivers/gpu/drm/i915/gt/intel_workarounds.c index 582a2c8cd219..40a38023a05b 100644 --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c @@ -1370,6 +1370,23 @@ static void gen9_whitelist_build_performance_counters(struct i915_wa_list *w) /* OA buffer trigger report 2/6 used by performance query */ whitelist_reg(w, OAREPORTTRIG2); whitelist_reg(w, OAREPORTTRIG6); + + /* Performance counters A18-20 used by tbs marker query */ + whitelist_reg_ext(w, OA_PERF_COUNTER_A18, + RING_FORCE_TO_NONPRIV_ACCESS_RW | + RING_FORCE_TO_NONPRIV_RANGE_4); + + whitelist_reg(w, OA_PERF_COUNTER_A20); + whitelist_reg(w, OA_PERF_COUNTER_A20_UPPER); + + /* Read access to gpu ticks */ + whitelist_reg_ext(w, GEN8_GPU_TICKS, + RING_FORCE_TO_NONPRIV_ACCESS_RD); + + /* Read access to: oa status, head, tail, buffer settings */ + whitelist_reg_ext(w, GEN8_OASTATUS, + RING_FORCE_TO_NONPRIV_ACCESS_RD | + RING_FORCE_TO_NONPRIV_RANGE_4); } static void gen12_whitelist_build_performance_counters(struct i915_wa_list *w) @@ -1377,6 +1394,23 @@ static void gen12_whitelist_build_performance_counters(struct i915_wa_list *w) /* OA buffer trigger report 2/6 used by performance query */ whitelist_reg(w, GEN12_OAG_OAREPORTTRIG2); whitelist_reg(w, GEN12_OAG_OAREPORTTRIG6); + + /* Performance counters A18-20 used by tbs marker query */ + whitelist_reg_ext(w, GEN12_OAG_PERF_COUNTER_A18, + RING_FORCE_TO_NONPRIV_ACCESS_RW | + RING_FORCE_TO_NONPRIV_RANGE_4); + + whitelist_reg(w, GEN12_OAG_PERF_COUNTER_A20); + whitelist_reg(w, GEN12_OAG_PERF_COUNTER_A20_UPPER); + + /* Read access to gpu ticks */ + whitelist_reg_ext(w, GEN12_OAG_GPU_TICKS, + RING_FORCE_TO_NONPRIV_ACCESS_RD); + + /* Read access to: oa status, head, tail, buffer settings */ + whitelist_reg_ext(w, GEN12_OAG_OASTATUS, + RING_FORCE_TO_NONPRIV_ACCESS_RD | + RING_FORCE_TO_NONPRIV_RANGE_4); } static void gen9_whitelist_build(struct i915_wa_list *w) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index b9607ac3620d..33653aa0cfd3 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -675,6 +675,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) #define GEN7_OASTATUS2_HEAD_MASK 0xffffffc0 #define GEN7_OASTATUS2_MEM_SELECT_GGTT (1 << 0) /* 0: PPGTT, 1: GGTT */ +#define GEN8_GPU_TICKS _MMIO(0x2910) #define GEN8_OASTATUS _MMIO(0x2b08) #define GEN8_OASTATUS_OVERRUN_STATUS (1 << 3) #define GEN8_OASTATUS_COUNTER_OVERFLOW (1 << 2) @@ -731,6 +732,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) #define GEN12_OAG_OA_DEBUG_DISABLE_GO_1_0_REPORTS (1 << 2) #define GEN12_OAG_OA_DEBUG_DISABLE_CTX_SWITCH_REPORTS (1 << 1) +#define GEN12_OAG_GPU_TICKS _MMIO(0xda90) #define GEN12_OAG_OASTATUS _MMIO(0xdafc) #define GEN12_OAG_OASTATUS_COUNTER_OVERFLOW (1 << 2) #define GEN12_OAG_OASTATUS_BUFFER_OVERFLOW (1 << 1) @@ -972,6 +974,19 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) #define OAREPORTTRIG8_NOA_SELECT_6_SHIFT 24 #define OAREPORTTRIG8_NOA_SELECT_7_SHIFT 28 +/* Performance counters registers */ +#define OA_PERF_COUNTER_A18 _MMIO(0x2890) +#define OA_PERF_COUNTER_A19 _MMIO(0x2898) +#define OA_PERF_COUNTER_A20 _MMIO(0x28A0) +#define OA_PERF_COUNTER_A20_UPPER _MMIO(0x28A4) + +/* Gen12 Performance counters registers */ +#define GEN12_OAG_PERF_COUNTER_A16 _MMIO(0xDA00) +#define GEN12_OAG_PERF_COUNTER_A18 _MMIO(0xDA10) +#define GEN12_OAG_PERF_COUNTER_A19 _MMIO(0xDA18) +#define GEN12_OAG_PERF_COUNTER_A20 _MMIO(0xDA20) +#define GEN12_OAG_PERF_COUNTER_A20_UPPER _MMIO(0xDA24) + /* Same layout as OASTARTTRIGX */ #define GEN12_OAG_OASTARTTRIG1 _MMIO(0xd900) #define GEN12_OAG_OASTARTTRIG2 _MMIO(0xd904) From patchwork Fri Jul 17 01:57:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Umesh Nerlige Ramappa X-Patchwork-Id: 11668787 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D2105138C for ; Fri, 17 Jul 2020 01:57:23 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id AF3FF2076D for ; Fri, 17 Jul 2020 01:57:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AF3FF2076D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id BFFA76E31D; Fri, 17 Jul 2020 01:57:19 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 42ED46E31C for ; Fri, 17 Jul 2020 01:57:18 +0000 (UTC) IronPort-SDR: Q3N+m39y2ydjcRnhHsSPwznpDWDOTvBqa5o85UJGCzvJbqqkRCjPwjvU3+zNx6iTa92JsosqUx L20LEIIvtdgQ== X-IronPort-AV: E=McAfee;i="6000,8403,9684"; a="211063478" X-IronPort-AV: E=Sophos;i="5.75,361,1589266800"; d="scan'208";a="211063478" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Jul 2020 18:57:17 -0700 IronPort-SDR: mT6VzHMhVwO/FSuXYeEzbhVjeCB9zU5VvMcRs9kwv/fRUNOxykv65tRcg16Vkmrgi/EuAPiXTp opc3Pqntq2yg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,361,1589266800"; d="scan'208";a="269413419" Received: from orsosgc001.ra.intel.com ([10.23.184.150]) by fmsmga007.fm.intel.com with ESMTP; 16 Jul 2020 18:57:17 -0700 From: Umesh Nerlige Ramappa To: Lionel G Landwerlin , intel-gfx@lists.freedesktop.org Date: Thu, 16 Jul 2020 18:57:16 -0700 Message-Id: <20200717015716.37671-3-umesh.nerlige.ramappa@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200717015716.37671-1-umesh.nerlige.ramappa@intel.com> References: <20200717015716.37671-1-umesh.nerlige.ramappa@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 3/3] drm/i915/perf: Map OA buffer to user space for gen12 performance query 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Piotr Maciejewski i915 used to support time based sampling mode which is good for overall system monitoring, but is not enough for query mode used to measure a single draw call or dispatch. Gen9-Gen11 are using current i915 perf implementation for query, but Gen12+ requires a new approach for query based on triggered reports within oa buffer. Triggering reports into the OA buffer is achieved by writing into a a trigger register. Optionally an unused counter/register is set with a marker value such that a triggered report can be identified in the OA buffer. Reports are usually triggered at the start and end of work that is measured. Since OA buffer is large and queries can be frequent, an efficient way to look for triggered reports is required. By knowing the current head and tail offsets into the OA buffer, it is easier to determine the locality of the reports of interest. Current perf OA interface does not expose head/tail information to the user and it filters out invalid reports before sending data to user. Also considering limited size of user buffer used during a query, creating a 1:1 copy of the OA buffer at the user space added undesired complexity. The solution was to map the OA buffer to user space provided (1) that it is accessed from a privileged user. (2) OA report filtering is not used. These 2 conditions would satisfy the safety criteria that the current perf interface addresses. To enable the query: - Add an ioctl to expose head and tail to the user - Add an ioctl to return size and offset of the OA buffer - Map the OA buffer to the user space Signed-off-by: Piotr Maciejewski Signed-off-by: Umesh Nerlige Ramappa Reported-by: kernel test robot Reported-by: kernel test robot Reported-by: kernel test robot --- drivers/gpu/drm/i915/gem/i915_gem_mman.c | 2 +- drivers/gpu/drm/i915/gem/i915_gem_mman.h | 2 + drivers/gpu/drm/i915/i915_perf.c | 156 ++++++++++++++++++++++- drivers/gpu/drm/i915/i915_perf_types.h | 5 + drivers/gpu/drm/i915/i915_reg.h | 1 + include/uapi/drm/i915_drm.h | 32 +++++ 6 files changed, 194 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/i915_gem_mman.c index b23368529a40..7c4b9b0c334b 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_mman.c +++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.c @@ -204,7 +204,7 @@ compute_partial_view(const struct drm_i915_gem_object *obj, return view; } -static vm_fault_t i915_error_to_vmf_fault(int err) +vm_fault_t i915_error_to_vmf_fault(int err) { switch (err) { default: diff --git a/drivers/gpu/drm/i915/gem/i915_gem_mman.h b/drivers/gpu/drm/i915/gem/i915_gem_mman.h index efee9e0d2508..1190a3a228ea 100644 --- a/drivers/gpu/drm/i915/gem/i915_gem_mman.h +++ b/drivers/gpu/drm/i915/gem/i915_gem_mman.h @@ -29,4 +29,6 @@ void i915_gem_object_release_mmap_gtt(struct drm_i915_gem_object *obj); void i915_gem_object_release_mmap_offset(struct drm_i915_gem_object *obj); +vm_fault_t i915_error_to_vmf_fault(int err); + #endif diff --git a/drivers/gpu/drm/i915/i915_perf.c b/drivers/gpu/drm/i915/i915_perf.c index c6f6370283cf..a7733722f915 100644 --- a/drivers/gpu/drm/i915/i915_perf.c +++ b/drivers/gpu/drm/i915/i915_perf.c @@ -192,10 +192,12 @@ */ #include +#include #include #include #include "gem/i915_gem_context.h" +#include "gem/i915_gem_mman.h" #include "gt/intel_engine_pm.h" #include "gt/intel_engine_user.h" #include "gt/intel_gt.h" @@ -434,6 +436,30 @@ static u32 gen7_oa_hw_tail_read(struct i915_perf_stream *stream) return oastatus1 & GEN7_OASTATUS1_TAIL_MASK; } +static u32 gen12_oa_hw_head_read(struct i915_perf_stream *stream) +{ + struct intel_uncore *uncore = stream->uncore; + + return intel_uncore_read(uncore, GEN12_OAG_OAHEADPTR) & + GEN12_OAG_OAHEADPTR_MASK; +} + +static u32 gen8_oa_hw_head_read(struct i915_perf_stream *stream) +{ + struct intel_uncore *uncore = stream->uncore; + + return intel_uncore_read(uncore, GEN8_OAHEADPTR) & + GEN8_OAHEADPTR_MASK; +} + +static u32 gen7_oa_hw_head_read(struct i915_perf_stream *stream) +{ + struct intel_uncore *uncore = stream->uncore; + u32 oastatus2 = intel_uncore_read(uncore, GEN7_OASTATUS2); + + return oastatus2 & GEN7_OASTATUS2_HEAD_MASK; +} + /** * oa_buffer_check_unlocked - check for data and update tail ptr state * @stream: i915 stream instance @@ -1448,7 +1474,8 @@ static void gen8_init_oa_buffer(struct i915_perf_stream *stream) * bit." */ intel_uncore_write(uncore, GEN8_OABUFFER, gtt_offset | - OABUFFER_SIZE_16M | GEN8_OABUFFER_MEM_SELECT_GGTT); + OABUFFER_SIZE_16M | GEN8_OABUFFER_MEM_SELECT_GGTT | + GEN7_OABUFFER_EDGE_TRIGGER); intel_uncore_write(uncore, GEN8_OATAILPTR, gtt_offset & GEN8_OATAILPTR_MASK); /* Mark that we need updated tail pointers to read from... */ @@ -1501,7 +1528,8 @@ static void gen12_init_oa_buffer(struct i915_perf_stream *stream) * bit." */ intel_uncore_write(uncore, GEN12_OAG_OABUFFER, gtt_offset | - OABUFFER_SIZE_16M | GEN8_OABUFFER_MEM_SELECT_GGTT); + OABUFFER_SIZE_16M | GEN8_OABUFFER_MEM_SELECT_GGTT | + GEN7_OABUFFER_EDGE_TRIGGER); intel_uncore_write(uncore, GEN12_OAG_OATAILPTR, gtt_offset & GEN12_OAG_OATAILPTR_MASK); @@ -1584,6 +1612,58 @@ static int alloc_oa_buffer(struct i915_perf_stream *stream) return ret; } +static vm_fault_t vm_fault_oa(struct vm_fault *vmf) +{ + struct vm_area_struct *vma = vmf->vma; + struct i915_perf_stream *stream = vma->vm_private_data; + struct drm_i915_gem_object *obj = stream->oa_buffer.vma->obj; + int err; + + err = i915_gem_object_pin_pages(obj); + if (err) + goto out; + + err = remap_io_sg(vma, + vma->vm_start, vma->vm_end - vma->vm_start, + obj->mm.pages->sgl, -1); + + i915_gem_object_unpin_pages(obj); + +out: + return i915_error_to_vmf_fault(err); +} + +static const struct vm_operations_struct vm_ops_oa = { + .fault = vm_fault_oa, +}; + +#define I915_PERF_OA_BUFFER_MMAP_OFFSET 1 + +int i915_perf_mmap(struct file *file, struct vm_area_struct *vma) +{ + struct i915_perf_stream *stream = file->private_data; + + if (vma->vm_end < vma->vm_start) + return -EINVAL; + + if ((vma->vm_end - vma->vm_start) > OA_BUFFER_SIZE) + return -EINVAL; + + if (vma->vm_flags & VM_WRITE) + return -EINVAL; + + if (vma->vm_pgoff != I915_PERF_OA_BUFFER_MMAP_OFFSET) + return -EINVAL; + + vma->vm_flags &= ~(VM_MAYWRITE | VM_MAYEXEC | VM_MAYSHARE); + vma->vm_flags |= VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP; + vma->vm_page_prot = vm_get_page_prot(vma->vm_flags); + vma->vm_private_data = stream; + vma->vm_ops = &vm_ops_oa; + + return 0; +} + static u32 *save_restore_register(struct i915_perf_stream *stream, u32 *cs, bool save, i915_reg_t reg, u32 offset, u32 dword_count) @@ -2493,6 +2573,13 @@ gen12_enable_metric_set(struct i915_perf_stream *stream, (period_exponent << GEN12_OAG_OAGLBCTXCTRL_TIMER_PERIOD_SHIFT)) : 0); + /* + * Initialize Super Queue Internal Cnt Register + * BIT(30) - PMON Enable - set in order to collect valid metrics. + */ + intel_uncore_write(uncore, GEN12_SQCNT1, + intel_uncore_read(uncore, GEN12_SQCNT1) | BIT(30)); + /* * Update all contexts prior writing the mux configurations as we need * to make sure all slices/subslices are ON before writing to NOA @@ -3199,6 +3286,57 @@ static long i915_perf_config_locked(struct i915_perf_stream *stream, return ret; } +/** + * i915_perf_oa_buffer_head_tail_locked - head and tail of the OA buffer + * @stream: i915 perf stream + * @arg: pointer to oa buffer head and tail filled by this function. + */ +static int i915_perf_oa_buffer_head_tail_locked(struct i915_perf_stream *stream, + unsigned long arg) +{ + struct drm_i915_perf_oa_buffer_head_tail ht; + void __user *output = (void __user *) arg; + u32 gtt_offset = i915_ggtt_offset(stream->oa_buffer.vma); + + if (!output) + return -EINVAL; + + memset(&ht, 0, sizeof(ht)); + + ht.head = stream->perf->ops.oa_hw_head_read(stream) - gtt_offset; + ht.tail = stream->perf->ops.oa_hw_tail_read(stream) - gtt_offset; + + if (copy_to_user(output, &ht, sizeof(ht))) + return -EFAULT; + + return 0; +} + +/** + * i915_perf_oa_buffer_info_locked - size and offset of the OA buffer + * @stream: i915 perf stream + * @arg: pointer to oa buffer info filled by this function. + */ +static int i915_perf_oa_buffer_info_locked(struct i915_perf_stream *stream, + unsigned long arg) +{ + struct drm_i915_perf_oa_buffer_info info; + void __user *output = (void __user *) arg; + + if (!output) + return -EINVAL; + + memset(&info, 0, sizeof(info)); + + info.size = stream->oa_buffer.vma->size; + info.offset = I915_PERF_OA_BUFFER_MMAP_OFFSET * PAGE_SIZE; + + if (copy_to_user(output, &info, sizeof(info))) + return -EFAULT; + + return 0; +} + /** * i915_perf_ioctl - support ioctl() usage with i915 perf stream FDs * @stream: An i915 perf stream @@ -3224,6 +3362,10 @@ static long i915_perf_ioctl_locked(struct i915_perf_stream *stream, return 0; case I915_PERF_IOCTL_CONFIG: return i915_perf_config_locked(stream, arg); + case I915_PERF_IOCTL_GET_OA_BUFFER_INFO: + return i915_perf_oa_buffer_info_locked(stream, arg); + case I915_PERF_IOCTL_GET_OA_BUFFER_HEAD_TAIL: + return i915_perf_oa_buffer_head_tail_locked(stream, arg); } return -EINVAL; @@ -3317,6 +3459,7 @@ static const struct file_operations fops = { * to handle 32bits compatibility. */ .compat_ioctl = i915_perf_ioctl, + .mmap = i915_perf_mmap, }; @@ -4245,6 +4388,7 @@ void i915_perf_init(struct drm_i915_private *i915) perf->ops.oa_disable = gen7_oa_disable; perf->ops.read = gen7_oa_read; perf->ops.oa_hw_tail_read = gen7_oa_hw_tail_read; + perf->ops.oa_hw_head_read = gen7_oa_hw_head_read; perf->oa_formats = hsw_oa_formats; } else if (HAS_LOGICAL_RING_CONTEXTS(i915)) { @@ -4276,6 +4420,7 @@ void i915_perf_init(struct drm_i915_private *i915) perf->ops.enable_metric_set = gen8_enable_metric_set; perf->ops.disable_metric_set = gen8_disable_metric_set; perf->ops.oa_hw_tail_read = gen8_oa_hw_tail_read; + perf->ops.oa_hw_head_read = gen8_oa_hw_head_read; if (IS_GEN(i915, 8)) { perf->ctx_oactxctrl_offset = 0x120; @@ -4303,6 +4448,7 @@ void i915_perf_init(struct drm_i915_private *i915) perf->ops.enable_metric_set = gen8_enable_metric_set; perf->ops.disable_metric_set = gen10_disable_metric_set; perf->ops.oa_hw_tail_read = gen8_oa_hw_tail_read; + perf->ops.oa_hw_head_read = gen8_oa_hw_head_read; if (IS_GEN(i915, 10)) { perf->ctx_oactxctrl_offset = 0x128; @@ -4327,6 +4473,7 @@ void i915_perf_init(struct drm_i915_private *i915) perf->ops.enable_metric_set = gen12_enable_metric_set; perf->ops.disable_metric_set = gen12_disable_metric_set; perf->ops.oa_hw_tail_read = gen12_oa_hw_tail_read; + perf->ops.oa_hw_head_read = gen12_oa_hw_head_read; perf->ctx_flexeu0_offset = 0; perf->ctx_oactxctrl_offset = 0x144; @@ -4432,8 +4579,11 @@ int i915_perf_ioctl_version(void) * * 5: Add DRM_I915_PERF_PROP_POLL_OA_PERIOD parameter that controls the * interval for the hrtimer used to check for OA data. + * + * 6: Added an option to map oa buffer at umd driver level and trigger + * oa reports within oa buffer from command buffer. */ - return 5; + return 6; } #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) diff --git a/drivers/gpu/drm/i915/i915_perf_types.h b/drivers/gpu/drm/i915/i915_perf_types.h index a36a455ae336..579f34e6fdd8 100644 --- a/drivers/gpu/drm/i915/i915_perf_types.h +++ b/drivers/gpu/drm/i915/i915_perf_types.h @@ -377,6 +377,11 @@ struct i915_oa_ops { * generations. */ u32 (*oa_hw_tail_read)(struct i915_perf_stream *stream); + + /** + * @oa_hw_head_read: read the OA head pointer register + */ + u32 (*oa_hw_head_read)(struct i915_perf_stream *stream); }; struct i915_perf { diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 33653aa0cfd3..f42004dc3757 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -697,6 +697,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg) #define OABUFFER_SIZE_16M (7 << 3) #define GEN12_OA_TLB_INV_CR _MMIO(0xceec) +#define GEN12_SQCNT1 _MMIO(0x8718) /* Gen12 OAR unit */ #define GEN12_OAR_OACONTROL _MMIO(0x2960) diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h index 00546062e023..148c86e608ff 100644 --- a/include/uapi/drm/i915_drm.h +++ b/include/uapi/drm/i915_drm.h @@ -2048,6 +2048,38 @@ struct drm_i915_perf_open_param { */ #define I915_PERF_IOCTL_CONFIG _IO('i', 0x2) +/** + * Returns OA buffer properties to be used with mmap. + * + * This ioctl is available in perf revision 6. + */ +#define I915_PERF_IOCTL_GET_OA_BUFFER_INFO _IO('i', 0x3) + +/** + * OA buffer size and offset. + */ +struct drm_i915_perf_oa_buffer_info { + __u32 size; + __u32 offset; + __u64 reserved[4]; +}; + +/** + * Returns current position of OA buffer head and tail. + * + * This ioctl is available in perf revision 6. + */ +#define I915_PERF_IOCTL_GET_OA_BUFFER_HEAD_TAIL _IO('i', 0x4) + +/** + * OA buffer head and tail. + */ +struct drm_i915_perf_oa_buffer_head_tail { + __u32 head; + __u32 tail; + __u64 reserved[4]; +}; + /** * Common to all i915 perf records */