From patchwork Wed Jun 7 13:02:18 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lucas Stach X-Patchwork-Id: 13270697 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 2D60AC7EE29 for ; Wed, 7 Jun 2023 13:02:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4B7C510E4FA; Wed, 7 Jun 2023 13:02:31 +0000 (UTC) Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by gabe.freedesktop.org (Postfix) with ESMTPS id 50E5610E4F1 for ; Wed, 7 Jun 2023 13:02:28 +0000 (UTC) Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by metis.ext.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1q6snw-0004N0-Of; Wed, 07 Jun 2023 15:02:24 +0200 From: Lucas Stach To: etnaviv@lists.freedesktop.org Subject: [PATCH 3/8] drm/etnaviv: move runtime PM handling to events Date: Wed, 7 Jun 2023 15:02:18 +0200 Message-Id: <20230607130223.3533464-3-l.stach@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230607130223.3533464-1-l.stach@pengutronix.de> References: <20230607130223.3533464-1-l.stach@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:1101:1d::28 X-SA-Exim-Mail-From: l.stach@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: dri-devel@lists.freedesktop.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: patchwork-lst@pengutronix.de, kernel@pengutronix.de, dri-devel@lists.freedesktop.org, Russell King Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Conceptually events are the right abstraction to handle the GPU runtime PM state: as long as any event is pending the GPU can not be idle. Events are also properly freed and reallocated when the GPU has been reset after a hang. Signed-off-by: Lucas Stach Reviewed-by: Christian Gmeiner --- drivers/gpu/drm/etnaviv/etnaviv_gem.h | 1 - drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 3 --- drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 27 ++++++++++++-------- 3 files changed, 16 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.h b/drivers/gpu/drm/etnaviv/etnaviv_gem.h index baa81cbf701a..a42d260cac2c 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem.h +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.h @@ -97,7 +97,6 @@ struct etnaviv_gem_submit { struct list_head node; /* GPU active submit list */ struct etnaviv_cmdbuf cmdbuf; struct pid *pid; /* submitting process */ - bool runtime_resumed; u32 exec_state; u32 flags; unsigned int nr_pmrs; diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c index 45403ea38906..2416c526f9b0 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c @@ -362,9 +362,6 @@ static void submit_cleanup(struct kref *kref) container_of(kref, struct etnaviv_gem_submit, refcount); unsigned i; - if (submit->runtime_resumed) - pm_runtime_put_autosuspend(submit->gpu->dev); - if (submit->cmdbuf.suballoc) etnaviv_cmdbuf_free(&submit->cmdbuf); diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c index 4e18aa8566c6..54a1249c5bca 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gpu.c @@ -1139,7 +1139,8 @@ static int event_alloc(struct etnaviv_gpu *gpu, unsigned nr_events, unsigned int *events) { unsigned long timeout = msecs_to_jiffies(10 * 10000); - unsigned i, acquired = 0; + unsigned i, acquired = 0, rpm_count = 0; + int ret; for (i = 0; i < nr_events; i++) { unsigned long ret; @@ -1148,6 +1149,7 @@ static int event_alloc(struct etnaviv_gpu *gpu, unsigned nr_events, if (!ret) { dev_err(gpu->dev, "wait_for_completion_timeout failed"); + ret = -EBUSY; goto out; } @@ -1167,13 +1169,23 @@ static int event_alloc(struct etnaviv_gpu *gpu, unsigned nr_events, spin_unlock(&gpu->event_spinlock); + for (i = 0; i < nr_events; i++) { + ret = pm_runtime_resume_and_get(gpu->dev); + if (ret) + goto out_rpm; + rpm_count++; + } + return 0; +out_rpm: + for (i = 0; i < rpm_count; i++) + pm_runtime_put_autosuspend(gpu->dev); out: for (i = 0; i < acquired; i++) complete(&gpu->event_free); - return -EBUSY; + return ret; } static void event_free(struct etnaviv_gpu *gpu, unsigned int event) @@ -1185,6 +1197,8 @@ static void event_free(struct etnaviv_gpu *gpu, unsigned int event) clear_bit(event, gpu->event_bitmap); complete(&gpu->event_free); } + + pm_runtime_put_autosuspend(gpu->dev); } /* @@ -1327,15 +1341,6 @@ struct dma_fence *etnaviv_gpu_submit(struct etnaviv_gem_submit *submit) unsigned int i, nr_events = 1, event[3]; int ret; - if (!submit->runtime_resumed) { - ret = pm_runtime_get_sync(gpu->dev); - if (ret < 0) { - pm_runtime_put_noidle(gpu->dev); - return NULL; - } - submit->runtime_resumed = true; - } - /* * if there are performance monitor requests we need to have * - a sync point to re-configure gpu and process ETNA_PM_PROCESS_PRE