From patchwork Thu Jul 12 18:59:23 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jordan Crouse X-Patchwork-Id: 10522185 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id CC2A0602B3 for ; Thu, 12 Jul 2018 18:59:55 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B65D829CD9 for ; Thu, 12 Jul 2018 18:59:55 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AB1DD29CDD; Thu, 12 Jul 2018 18:59:55 +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=-5.2 required=2.0 tests=BAYES_00, 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 2C39D29CD9 for ; Thu, 12 Jul 2018 18:59:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7FDF46F0E8; Thu, 12 Jul 2018 18:59:45 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from smtp.codeaurora.org (smtp.codeaurora.org [198.145.29.96]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2A8216F0E6; Thu, 12 Jul 2018 18:59:41 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1000) id B575860541; Thu, 12 Jul 2018 18:59:38 +0000 (UTC) Received: from jcrouse-lnx.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: jcrouse@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 92EF560BE3; Thu, 12 Jul 2018 18:59:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 92EF560BE3 From: Jordan Crouse To: freedreno@lists.freedesktop.org Subject: [PATCH 06/13] drm/msm/gpu: Capture the state of the GPU Date: Thu, 12 Jul 2018 12:59:23 -0600 Message-Id: <20180712185930.2492-7-jcrouse@codeaurora.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180712185930.2492-1-jcrouse@codeaurora.org> References: <20180712185930.2492-1-jcrouse@codeaurora.org> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add the infrastructure to capture the current state of the GPU and store it in memory so that it can be dumped later. For now grab the same basic ringbuffer information and registers that are provided by the debugfs 'gpu' node but obviously this should be extended to capture a much larger set of GPU information. Signed-off-by: Jordan Crouse --- drivers/gpu/drm/msm/adreno/a3xx_gpu.c | 15 +++++++ drivers/gpu/drm/msm/adreno/a4xx_gpu.c | 14 +++++++ drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 22 ++++++++++ drivers/gpu/drm/msm/adreno/adreno_gpu.c | 54 +++++++++++++++++++++++++ drivers/gpu/drm/msm/adreno/adreno_gpu.h | 3 ++ drivers/gpu/drm/msm/msm_gpu.h | 19 +++++++++ 6 files changed, 127 insertions(+) diff --git a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c index 3ebbeb3a9b68..b707b5bca9ab 100644 --- a/drivers/gpu/drm/msm/adreno/a3xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a3xx_gpu.c @@ -427,6 +427,19 @@ static void a3xx_dump(struct msm_gpu *gpu) gpu_read(gpu, REG_A3XX_RBBM_STATUS)); adreno_dump(gpu); } + +static struct msm_gpu_state *a3xx_gpu_state_get(struct msm_gpu *gpu) +{ + struct msm_gpu_state *state = adreno_gpu_state_get(gpu); + + if (IS_ERR(state)) + return state; + + state->rbbm_status = gpu_read(gpu, REG_A3XX_RBBM_STATUS); + + return state; +} + /* Register offset defines for A3XX */ static const unsigned int a3xx_register_offsets[REG_ADRENO_REGISTER_MAX] = { REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_BASE, REG_AXXX_CP_RB_BASE), @@ -453,6 +466,8 @@ static const struct adreno_gpu_funcs funcs = { #ifdef CONFIG_DEBUG_FS .show = a3xx_show, #endif + .gpu_state_get = a3xx_gpu_state_get, + .gpu_state_put = adreno_gpu_state_put, }, }; diff --git a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c index 16d3d596638e..17e97ebc1077 100644 --- a/drivers/gpu/drm/msm/adreno/a4xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a4xx_gpu.c @@ -465,6 +465,18 @@ static void a4xx_show(struct msm_gpu *gpu, struct seq_file *m) } #endif +static struct msm_gpu_state *a4xx_gpu_state_get(struct msm_gpu *gpu) +{ + struct msm_gpu_state *state = adreno_gpu_state_get(gpu); + + if (IS_ERR(state)) + return state; + + state->rbbm_status = gpu_read(gpu, REG_A4XX_RBBM_STATUS); + + return state; +} + /* Register offset defines for A4XX, in order of enum adreno_regs */ static const unsigned int a4xx_register_offsets[REG_ADRENO_REGISTER_MAX] = { REG_ADRENO_DEFINE(REG_ADRENO_CP_RB_BASE, REG_A4XX_CP_RB_BASE), @@ -541,6 +553,8 @@ static const struct adreno_gpu_funcs funcs = { #ifdef CONFIG_DEBUG_FS .show = a4xx_show, #endif + .gpu_state_get = a4xx_gpu_state_get, + .gpu_state_put = adreno_gpu_state_put, }, .get_timestamp = a4xx_get_timestamp, }; diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c index d39400e5bc42..9e85e4f7016d 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c @@ -1195,6 +1195,26 @@ static int a5xx_get_timestamp(struct msm_gpu *gpu, uint64_t *value) return 0; } +static struct msm_gpu_state *a5xx_gpu_state_get(struct msm_gpu *gpu) +{ + struct msm_gpu_state *state; + + /* + * Temporarily disable hardware clock gating before going into + * adreno_show to avoid issues while reading the registers + */ + a5xx_set_hwcg(gpu, false); + + state = adreno_gpu_state_get(gpu); + + if (!IS_ERR(state)) + state->rbbm_status = gpu_read(gpu, REG_A5XX_RBBM_STATUS); + + a5xx_set_hwcg(gpu, true); + + return state; +} + #ifdef CONFIG_DEBUG_FS static void a5xx_show(struct msm_gpu *gpu, struct seq_file *m) { @@ -1244,6 +1264,8 @@ static const struct adreno_gpu_funcs funcs = { .debugfs_init = a5xx_debugfs_init, #endif .gpu_busy = a5xx_gpu_busy, + .gpu_state_get = a5xx_gpu_state_get, + .gpu_state_put = adreno_gpu_state_put, }, .get_timestamp = a5xx_get_timestamp, }; diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index bcbf9f2a29f9..c7a0d278c59e 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -368,6 +368,60 @@ bool adreno_idle(struct msm_gpu *gpu, struct msm_ringbuffer *ring) return false; } +struct msm_gpu_state *adreno_gpu_state_get(struct msm_gpu *gpu) +{ + struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + struct msm_gpu_state *state; + int i, count = 0; + + state = kzalloc(sizeof(*state), GFP_KERNEL); + if (!state) + return ERR_PTR(-ENOMEM); + + do_gettimeofday(&state->time); + + for (i = 0; i < gpu->nr_rings; i++) { + state->ring[i].fence = gpu->rb[i]->memptrs->fence; + state->ring[i].seqno = gpu->rb[i]->seqno; + state->ring[i].rptr = get_rptr(adreno_gpu, gpu->rb[i]); + state->ring[i].wptr = get_wptr(gpu->rb[i]); + } + + /* Count the number of registers */ + for (i = 0; adreno_gpu->registers[i] != ~0; i += 2) + count += adreno_gpu->registers[i + 1] - + adreno_gpu->registers[i] + 1; + + state->registers = kcalloc(count * 2, sizeof(u32), GFP_KERNEL); + if (state->registers) { + int pos = 0; + + for (i = 0; adreno_gpu->registers[i] != ~0; i += 2) { + u32 start = adreno_gpu->registers[i]; + u32 end = adreno_gpu->registers[i + 1]; + u32 addr; + + for (addr = start; addr <= end; addr++) { + state->registers[pos++] = addr; + state->registers[pos++] = gpu_read(gpu, addr); + } + } + + state->nr_registers = count; + } + + return state; +} + +void adreno_gpu_state_put(struct msm_gpu_state *state) +{ + if (IS_ERR_OR_NULL(state)) + return; + + kfree(state->registers); + kfree(state); +} + #ifdef CONFIG_DEBUG_FS void adreno_show(struct msm_gpu *gpu, struct seq_file *m) { diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h index bc9ec27e9ed8..734e31a9631f 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h @@ -229,6 +229,9 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev, void adreno_gpu_cleanup(struct adreno_gpu *gpu); +struct msm_gpu_state *adreno_gpu_state_get(struct msm_gpu *gpu); +void adreno_gpu_state_put(struct msm_gpu_state *state); + /* ringbuffer helpers (the parts that are adreno specific) */ static inline void diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index b8241179175a..4be72a612bec 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -27,6 +27,7 @@ struct msm_gem_submit; struct msm_gpu_perfcntr; +struct msm_gpu_state; struct msm_gpu_config { const char *ioname; @@ -69,6 +70,8 @@ struct msm_gpu_funcs { int (*debugfs_init)(struct msm_gpu *gpu, struct drm_minor *minor); #endif int (*gpu_busy)(struct msm_gpu *gpu, uint64_t *value); + struct msm_gpu_state *(*gpu_state_get)(struct msm_gpu *gpu); + void (*gpu_state_put)(struct msm_gpu_state *state); }; struct msm_gpu { @@ -175,6 +178,22 @@ struct msm_gpu_submitqueue { struct kref ref; }; +struct msm_gpu_state { + struct timeval time; + + struct { + u32 fence; + u32 seqno; + u32 rptr; + u32 wptr; + } ring[MSM_GPU_MAX_RINGS]; + + int nr_registers; + u32 *registers; + + u32 rbbm_status; +}; + static inline void gpu_write(struct msm_gpu *gpu, u32 reg, u32 data) { msm_writel(data, gpu->mmio + (reg << 2));