From patchwork Fri May 3 08:12:39 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 10928037 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 4ADE213AD for ; Fri, 3 May 2019 08:13:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3CBB0283EE for ; Fri, 3 May 2019 08:13:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2D11528437; Fri, 3 May 2019 08:13:15 +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 C440C2842E for ; Fri, 3 May 2019 08:13:14 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AAC8189885; Fri, 3 May 2019 08:13:11 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from relay7-d.mail.gandi.net (relay7-d.mail.gandi.net [217.70.183.200]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8599289885 for ; Fri, 3 May 2019 08:13:10 +0000 (UTC) X-Originating-IP: 90.88.149.145 Received: from localhost.localdomain (aaubervilliers-681-1-29-145.w90-88.abo.wanadoo.fr [90.88.149.145]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay7-d.mail.gandi.net (Postfix) with ESMTPSA id CA50E2000C; Fri, 3 May 2019 08:13:06 +0000 (UTC) From: Paul Kocialkowski To: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v8 1/4] drm/vc4: Reformat and the binner bo allocation helper Date: Fri, 3 May 2019 10:12:39 +0200 Message-Id: <20190503081242.29039-2-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190503081242.29039-1-paul.kocialkowski@bootlin.com> References: <20190503081242.29039-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 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: Maxime Ripard , Eben Upton , David Airlie , Paul Kocialkowski , Thomas Petazzoni Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP In preparation for wrapping the binner bo allocation helper with put/get helpers, pass the vc4 dev directly and drop the vc4 prefix. Signed-off-by: Paul Kocialkowski --- drivers/gpu/drm/vc4/vc4_v3d.c | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_v3d.c b/drivers/gpu/drm/vc4/vc4_v3d.c index a4b6859e3af6..7c490106e185 100644 --- a/drivers/gpu/drm/vc4/vc4_v3d.c +++ b/drivers/gpu/drm/vc4/vc4_v3d.c @@ -213,7 +213,7 @@ int vc4_v3d_get_bin_slot(struct vc4_dev *vc4) } /** - * vc4_allocate_bin_bo() - allocates the memory that will be used for + * bin_bo_alloc() - allocates the memory that will be used for * tile binning. * * The binner has a limitation that the addresses in the tile state @@ -234,9 +234,8 @@ int vc4_v3d_get_bin_slot(struct vc4_dev *vc4) * overall CMA pool before they make scenes complicated enough to run * out of bin space. */ -static int vc4_allocate_bin_bo(struct drm_device *drm) +static int bin_bo_alloc(struct vc4_dev *vc4) { - struct vc4_dev *vc4 = to_vc4_dev(drm); struct vc4_v3d *v3d = vc4->v3d; uint32_t size = 16 * 1024 * 1024; int ret = 0; @@ -251,7 +250,7 @@ static int vc4_allocate_bin_bo(struct drm_device *drm) INIT_LIST_HEAD(&list); while (true) { - struct vc4_bo *bo = vc4_bo_create(drm, size, true, + struct vc4_bo *bo = vc4_bo_create(vc4->dev, size, true, VC4_BO_TYPE_BIN); if (IS_ERR(bo)) { @@ -333,7 +332,7 @@ static int vc4_v3d_runtime_resume(struct device *dev) struct vc4_dev *vc4 = v3d->vc4; int ret; - ret = vc4_allocate_bin_bo(vc4->dev); + ret = bin_bo_alloc(vc4); if (ret) return ret; @@ -403,7 +402,7 @@ static int vc4_v3d_bind(struct device *dev, struct device *master, void *data) if (ret != 0) return ret; - ret = vc4_allocate_bin_bo(drm); + ret = bin_bo_alloc(vc4); if (ret) { clk_disable_unprepare(v3d->clk); return ret; From patchwork Fri May 3 08:12:40 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 10928039 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 11E8913AD for ; Fri, 3 May 2019 08:13:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 066E428437 for ; Fri, 3 May 2019 08:13:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EE7072844E; Fri, 3 May 2019 08:13:16 +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 B65EC28437 for ; Fri, 3 May 2019 08:13:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 61E0189890; Fri, 3 May 2019 08:13:13 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from relay7-d.mail.gandi.net (relay7-d.mail.gandi.net [217.70.183.200]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0B5EE89890 for ; Fri, 3 May 2019 08:13:11 +0000 (UTC) X-Originating-IP: 90.88.149.145 Received: from localhost.localdomain (aaubervilliers-681-1-29-145.w90-88.abo.wanadoo.fr [90.88.149.145]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay7-d.mail.gandi.net (Postfix) with ESMTPSA id 60FCF20002; Fri, 3 May 2019 08:13:09 +0000 (UTC) From: Paul Kocialkowski To: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v8 2/4] drm/vc4: Check for V3D before binner bo alloc Date: Fri, 3 May 2019 10:12:40 +0200 Message-Id: <20190503081242.29039-3-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190503081242.29039-1-paul.kocialkowski@bootlin.com> References: <20190503081242.29039-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 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: Maxime Ripard , Eben Upton , David Airlie , Paul Kocialkowski , Thomas Petazzoni Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Check that we have a V3D device registered before attempting to allocate a binner buffer object. Signed-off-by: Paul Kocialkowski --- drivers/gpu/drm/vc4/vc4_v3d.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/vc4/vc4_v3d.c b/drivers/gpu/drm/vc4/vc4_v3d.c index 7c490106e185..c16db4665af6 100644 --- a/drivers/gpu/drm/vc4/vc4_v3d.c +++ b/drivers/gpu/drm/vc4/vc4_v3d.c @@ -241,6 +241,9 @@ static int bin_bo_alloc(struct vc4_dev *vc4) int ret = 0; struct list_head list; + if (!v3d) + return -ENODEV; + /* We may need to try allocating more than once to get a BO * that doesn't cross 256MB. Track the ones we've allocated * that failed so far, so that we can free them when we've got From patchwork Fri May 3 08:12:41 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 10928041 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 D6A1514B6 for ; Fri, 3 May 2019 08:13:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CA3B128415 for ; Fri, 3 May 2019 08:13:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id BE7EF28437; Fri, 3 May 2019 08:13:18 +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 8926828415 for ; Fri, 3 May 2019 08:13:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 69C308989E; Fri, 3 May 2019 08:13:15 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from relay7-d.mail.gandi.net (relay7-d.mail.gandi.net [217.70.183.200]) by gabe.freedesktop.org (Postfix) with ESMTPS id D573B8989E for ; Fri, 3 May 2019 08:13:13 +0000 (UTC) X-Originating-IP: 90.88.149.145 Received: from localhost.localdomain (aaubervilliers-681-1-29-145.w90-88.abo.wanadoo.fr [90.88.149.145]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay7-d.mail.gandi.net (Postfix) with ESMTPSA id F0DE020013; Fri, 3 May 2019 08:13:10 +0000 (UTC) From: Paul Kocialkowski To: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v8 3/4] drm/vc4: Check for the binner bo before handling OOM interrupt Date: Fri, 3 May 2019 10:12:41 +0200 Message-Id: <20190503081242.29039-4-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190503081242.29039-1-paul.kocialkowski@bootlin.com> References: <20190503081242.29039-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 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: Maxime Ripard , Eben Upton , David Airlie , Paul Kocialkowski , Thomas Petazzoni Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Since the OOM interrupt directly deals with the binner bo, it doesn't make sense to try and handle it without a binner buffer registered. Signed-off-by: Paul Kocialkowski --- drivers/gpu/drm/vc4/vc4_irq.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/vc4/vc4_irq.c b/drivers/gpu/drm/vc4/vc4_irq.c index ffd0a4388752..723dc86b4511 100644 --- a/drivers/gpu/drm/vc4/vc4_irq.c +++ b/drivers/gpu/drm/vc4/vc4_irq.c @@ -64,6 +64,9 @@ vc4_overflow_mem_work(struct work_struct *work) struct vc4_exec_info *exec; unsigned long irqflags; + if (!bo) + return; + bin_bo_slot = vc4_v3d_get_bin_slot(vc4); if (bin_bo_slot < 0) { DRM_ERROR("Couldn't allocate binner overflow mem\n"); From patchwork Fri May 3 08:12:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul Kocialkowski X-Patchwork-Id: 10928043 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 C8D4D14B6 for ; Fri, 3 May 2019 08:13:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BBC4528415 for ; Fri, 3 May 2019 08:13:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AFA5828437; Fri, 3 May 2019 08:13:20 +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 055AD28415 for ; Fri, 3 May 2019 08:13:20 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B5571898A4; Fri, 3 May 2019 08:13:17 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from relay7-d.mail.gandi.net (relay7-d.mail.gandi.net [217.70.183.200]) by gabe.freedesktop.org (Postfix) with ESMTPS id 74D828989F for ; Fri, 3 May 2019 08:13:15 +0000 (UTC) X-Originating-IP: 90.88.149.145 Received: from localhost.localdomain (aaubervilliers-681-1-29-145.w90-88.abo.wanadoo.fr [90.88.149.145]) (Authenticated sender: paul.kocialkowski@bootlin.com) by relay7-d.mail.gandi.net (Postfix) with ESMTPSA id A6B5820006; Fri, 3 May 2019 08:13:12 +0000 (UTC) From: Paul Kocialkowski To: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH v8 4/4] drm/vc4: Allocate binner bo when starting to use the V3D Date: Fri, 3 May 2019 10:12:42 +0200 Message-Id: <20190503081242.29039-5-paul.kocialkowski@bootlin.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190503081242.29039-1-paul.kocialkowski@bootlin.com> References: <20190503081242.29039-1-paul.kocialkowski@bootlin.com> MIME-Version: 1.0 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: Maxime Ripard , Eben Upton , David Airlie , Paul Kocialkowski , Thomas Petazzoni Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP The binner BO is not required until the V3D is in use, so avoid allocating it at probe and do it on the first non-dumb BO allocation. Keep track of which clients are using the V3D and liberate the buffer when there is none left, using a kref. Protect the logic with a mutex to avoid race conditions. The binner BO is created at the time of the first render ioctl and is destroyed when there is no client and no exec job using it left. The Out-Of-Memory (OOM) interrupt also gets some tweaking, to avoid enabling it before having allocated a binner bo. We also want to keep the BO alive during runtime suspend/resume to avoid failing to allocate it at resume. This happens when the CMA pool is full at that point and results in a hard crash. Signed-off-by: Paul Kocialkowski Reviewed-by: Eric Anholt --- drivers/gpu/drm/vc4/vc4_bo.c | 31 ++++++++++++++++- drivers/gpu/drm/vc4/vc4_drv.c | 6 ++++ drivers/gpu/drm/vc4/vc4_drv.h | 14 ++++++++ drivers/gpu/drm/vc4/vc4_gem.c | 11 ++++++ drivers/gpu/drm/vc4/vc4_irq.c | 21 ++++++++---- drivers/gpu/drm/vc4/vc4_v3d.c | 64 ++++++++++++++++++++++++++++------- 6 files changed, 127 insertions(+), 20 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_bo.c b/drivers/gpu/drm/vc4/vc4_bo.c index 88ebd681d7eb..1434bb829267 100644 --- a/drivers/gpu/drm/vc4/vc4_bo.c +++ b/drivers/gpu/drm/vc4/vc4_bo.c @@ -799,13 +799,36 @@ vc4_prime_import_sg_table(struct drm_device *dev, return obj; } +static int vc4_grab_bin_bo(struct vc4_dev *vc4, struct vc4_file *vc4file) +{ + int ret; + + if (!vc4->v3d) + return -ENODEV; + + if (vc4file->bin_bo_used) + return 0; + + ret = vc4_v3d_bin_bo_get(vc4, &vc4file->bin_bo_used); + if (ret) + return ret; + + return 0; +} + int vc4_create_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_vc4_create_bo *args = data; + struct vc4_file *vc4file = file_priv->driver_priv; + struct vc4_dev *vc4 = to_vc4_dev(dev); struct vc4_bo *bo = NULL; int ret; + ret = vc4_grab_bin_bo(vc4, vc4file); + if (ret) + return ret; + /* * We can't allocate from the BO cache, because the BOs don't * get zeroed, and that might leak data between users. @@ -846,6 +869,8 @@ vc4_create_shader_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv) { struct drm_vc4_create_shader_bo *args = data; + struct vc4_file *vc4file = file_priv->driver_priv; + struct vc4_dev *vc4 = to_vc4_dev(dev); struct vc4_bo *bo = NULL; int ret; @@ -865,6 +890,10 @@ vc4_create_shader_bo_ioctl(struct drm_device *dev, void *data, return -EINVAL; } + ret = vc4_grab_bin_bo(vc4, vc4file); + if (ret) + return ret; + bo = vc4_bo_create(dev, args->size, true, VC4_BO_TYPE_V3D_SHADER); if (IS_ERR(bo)) return PTR_ERR(bo); @@ -894,7 +923,7 @@ vc4_create_shader_bo_ioctl(struct drm_device *dev, void *data, */ ret = drm_gem_handle_create(file_priv, &bo->base.base, &args->handle); - fail: +fail: drm_gem_object_put_unlocked(&bo->base.base); return ret; diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c index 6d9be20a32be..0f99ad03614e 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.c +++ b/drivers/gpu/drm/vc4/vc4_drv.c @@ -128,8 +128,12 @@ static int vc4_open(struct drm_device *dev, struct drm_file *file) static void vc4_close(struct drm_device *dev, struct drm_file *file) { + struct vc4_dev *vc4 = to_vc4_dev(dev); struct vc4_file *vc4file = file->driver_priv; + if (vc4file->bin_bo_used) + vc4_v3d_bin_bo_put(vc4); + vc4_perfmon_close_file(vc4file); kfree(vc4file); } @@ -274,6 +278,8 @@ static int vc4_drm_bind(struct device *dev) drm->dev_private = vc4; INIT_LIST_HEAD(&vc4->debugfs_list); + mutex_init(&vc4->bin_bo_lock); + ret = vc4_bo_cache_init(drm); if (ret) goto dev_put; diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h index 4f13f6262491..9170a24ec5f5 100644 --- a/drivers/gpu/drm/vc4/vc4_drv.h +++ b/drivers/gpu/drm/vc4/vc4_drv.h @@ -216,6 +216,11 @@ struct vc4_dev { * the minor is available (after drm_dev_register()). */ struct list_head debugfs_list; + + /* Mutex for binner bo allocation. */ + struct mutex bin_bo_lock; + /* Reference count for our binner bo. */ + struct kref bin_bo_kref; }; static inline struct vc4_dev * @@ -584,6 +589,11 @@ struct vc4_exec_info { * NULL otherwise. */ struct vc4_perfmon *perfmon; + + /* Whether the exec has taken a reference to the binner BO, which should + * happen with a VC4_PACKET_TILE_BINNING_MODE_CONFIG packet. + */ + bool bin_bo_used; }; /* Per-open file private data. Any driver-specific resource that has to be @@ -594,6 +604,8 @@ struct vc4_file { struct idr idr; struct mutex lock; } perfmon; + + bool bin_bo_used; }; static inline struct vc4_exec_info * @@ -833,6 +845,8 @@ void vc4_plane_async_set_fb(struct drm_plane *plane, extern struct platform_driver vc4_v3d_driver; extern const struct of_device_id vc4_v3d_dt_match[]; int vc4_v3d_get_bin_slot(struct vc4_dev *vc4); +int vc4_v3d_bin_bo_get(struct vc4_dev *vc4, bool *used); +void vc4_v3d_bin_bo_put(struct vc4_dev *vc4); int vc4_v3d_pm_get(struct vc4_dev *vc4); void vc4_v3d_pm_put(struct vc4_dev *vc4); diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c index d9311be32a4f..84795d928f20 100644 --- a/drivers/gpu/drm/vc4/vc4_gem.c +++ b/drivers/gpu/drm/vc4/vc4_gem.c @@ -820,6 +820,7 @@ static int vc4_get_bcl(struct drm_device *dev, struct vc4_exec_info *exec) { struct drm_vc4_submit_cl *args = exec->args; + struct vc4_dev *vc4 = to_vc4_dev(dev); void *temp = NULL; void *bin; int ret = 0; @@ -918,6 +919,12 @@ vc4_get_bcl(struct drm_device *dev, struct vc4_exec_info *exec) if (ret) goto fail; + if (exec->found_tile_binning_mode_config_packet) { + ret = vc4_v3d_bin_bo_get(vc4, &exec->bin_bo_used); + if (ret) + goto fail; + } + /* Block waiting on any previous rendering into the CS's VBO, * IB, or textures, so that pixels are actually written by the * time we try to read them. @@ -966,6 +973,10 @@ vc4_complete_exec(struct drm_device *dev, struct vc4_exec_info *exec) vc4->bin_alloc_used &= ~exec->bin_slots; spin_unlock_irqrestore(&vc4->job_lock, irqflags); + /* Release the reference on the binner BO if needed. */ + if (exec->bin_bo_used) + vc4_v3d_bin_bo_put(vc4); + /* Release the reference we had on the perf monitor. */ vc4_perfmon_put(exec->perfmon); diff --git a/drivers/gpu/drm/vc4/vc4_irq.c b/drivers/gpu/drm/vc4/vc4_irq.c index 723dc86b4511..e226c24e543f 100644 --- a/drivers/gpu/drm/vc4/vc4_irq.c +++ b/drivers/gpu/drm/vc4/vc4_irq.c @@ -59,18 +59,22 @@ vc4_overflow_mem_work(struct work_struct *work) { struct vc4_dev *vc4 = container_of(work, struct vc4_dev, overflow_mem_work); - struct vc4_bo *bo = vc4->bin_bo; + struct vc4_bo *bo; int bin_bo_slot; struct vc4_exec_info *exec; unsigned long irqflags; - if (!bo) - return; + mutex_lock(&vc4->bin_bo_lock); + + if (!vc4->bin_bo) + goto complete; + + bo = vc4->bin_bo; bin_bo_slot = vc4_v3d_get_bin_slot(vc4); if (bin_bo_slot < 0) { DRM_ERROR("Couldn't allocate binner overflow mem\n"); - return; + goto complete; } spin_lock_irqsave(&vc4->job_lock, irqflags); @@ -101,6 +105,9 @@ vc4_overflow_mem_work(struct work_struct *work) V3D_WRITE(V3D_INTCTL, V3D_INT_OUTOMEM); V3D_WRITE(V3D_INTENA, V3D_INT_OUTOMEM); spin_unlock_irqrestore(&vc4->job_lock, irqflags); + +complete: + mutex_unlock(&vc4->bin_bo_lock); } static void @@ -252,8 +259,10 @@ vc4_irq_postinstall(struct drm_device *dev) if (!vc4->v3d) return 0; - /* Enable both the render done and out of memory interrupts. */ - V3D_WRITE(V3D_INTENA, V3D_DRIVER_IRQS); + /* Enable the render done interrupts. The out-of-memory interrupt is + * enabled as soon as we have a binner BO allocated. + */ + V3D_WRITE(V3D_INTENA, V3D_INT_FLDONE | V3D_INT_FRDONE); return 0; } diff --git a/drivers/gpu/drm/vc4/vc4_v3d.c b/drivers/gpu/drm/vc4/vc4_v3d.c index c16db4665af6..7df717241a10 100644 --- a/drivers/gpu/drm/vc4/vc4_v3d.c +++ b/drivers/gpu/drm/vc4/vc4_v3d.c @@ -294,6 +294,14 @@ static int bin_bo_alloc(struct vc4_dev *vc4) WARN_ON_ONCE(sizeof(vc4->bin_alloc_used) * 8 != bo->base.base.size / vc4->bin_alloc_size); + kref_init(&vc4->bin_bo_kref); + + /* Enable the out-of-memory interrupt to set our + * newly-allocated binner BO, potentially from an + * already-pending-but-masked interupt. + */ + V3D_WRITE(V3D_INTENA, V3D_INT_OUTOMEM); + break; } @@ -313,6 +321,49 @@ static int bin_bo_alloc(struct vc4_dev *vc4) return ret; } +int vc4_v3d_bin_bo_get(struct vc4_dev *vc4, bool *used) +{ + int ret = 0; + + mutex_lock(&vc4->bin_bo_lock); + + if (used && *used) + goto complete; + + if (used) + *used = true; + + if (vc4->bin_bo) { + kref_get(&vc4->bin_bo_kref); + goto complete; + } + + ret = bin_bo_alloc(vc4); + +complete: + mutex_unlock(&vc4->bin_bo_lock); + + return ret; +} + +static void bin_bo_release(struct kref *ref) +{ + struct vc4_dev *vc4 = container_of(ref, struct vc4_dev, bin_bo_kref); + + if (WARN_ON_ONCE(!vc4->bin_bo)) + return; + + drm_gem_object_put_unlocked(&vc4->bin_bo->base.base); + vc4->bin_bo = NULL; +} + +void vc4_v3d_bin_bo_put(struct vc4_dev *vc4) +{ + mutex_lock(&vc4->bin_bo_lock); + kref_put(&vc4->bin_bo_kref, bin_bo_release); + mutex_unlock(&vc4->bin_bo_lock); +} + #ifdef CONFIG_PM static int vc4_v3d_runtime_suspend(struct device *dev) { @@ -321,9 +372,6 @@ static int vc4_v3d_runtime_suspend(struct device *dev) vc4_irq_uninstall(vc4->dev); - drm_gem_object_put_unlocked(&vc4->bin_bo->base.base); - vc4->bin_bo = NULL; - clk_disable_unprepare(v3d->clk); return 0; @@ -335,10 +383,6 @@ static int vc4_v3d_runtime_resume(struct device *dev) struct vc4_dev *vc4 = v3d->vc4; int ret; - ret = bin_bo_alloc(vc4); - if (ret) - return ret; - ret = clk_prepare_enable(v3d->clk); if (ret != 0) return ret; @@ -405,12 +449,6 @@ static int vc4_v3d_bind(struct device *dev, struct device *master, void *data) if (ret != 0) return ret; - ret = bin_bo_alloc(vc4); - if (ret) { - clk_disable_unprepare(v3d->clk); - return ret; - } - /* Reset the binner overflow address/size at setup, to be sure * we don't reuse an old one. */