From patchwork Tue Jun 20 00:42:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Danilo Krummrich X-Patchwork-Id: 13285095 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 E9B55EB64DB for ; Tue, 20 Jun 2023 00:43:15 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6261210E244; Tue, 20 Jun 2023 00:43:15 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5345710E246 for ; Tue, 20 Jun 2023 00:43:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1687221792; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3geKuxzjDFEAyRQg+pvvKYDXtyOEfIDh7zJEnBzcGDI=; b=fKyhZyPWQr56w3PXr6hIJqdtStTmdRI0TgqXPLNjlDi8sMOHIOxENO5TfN4+LhmHXai4b9 nTZ1e8oLb5I8BSTNbO6r80Bt2STiOex2LqSodUtEmnZ7vL3gn6KYRtFhlTPJXuO3pe77JI Y64jLeGCzxuw00ZQU8aRfTZKuLFxZ40= Received: from mail-ej1-f72.google.com (mail-ej1-f72.google.com [209.85.218.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-265-Rse2UAz4MeaxTzk0lLGmOQ-1; Mon, 19 Jun 2023 20:43:10 -0400 X-MC-Unique: Rse2UAz4MeaxTzk0lLGmOQ-1 Received: by mail-ej1-f72.google.com with SMTP id a640c23a62f3a-94a355cf318so321688366b.2 for ; Mon, 19 Jun 2023 17:43:10 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687221790; x=1689813790; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3geKuxzjDFEAyRQg+pvvKYDXtyOEfIDh7zJEnBzcGDI=; b=B0UsnTdOOnrIrk5MAk7/KZLVDximzMtKBUu17aa81X25h4sl/W9azJb8fPW5p9jwLW QP3o/55R0xmUdeuamOxAhU8CNork2dnoBMkw/yf3H1qYpxGDFjxgVMl6VeNXgiZaZ8+R ytBN9KDQjt6DTm3yDV4De9pm49s9IfKQLxkbBB9S8k+4sCDF4TXdmrwfA1NgX3t+ju8R OakDx0D0rLP0OTJ8vlJQ5Qm4FyLK8Q5DjsvoSxfS5AKLwpNwc2CZ3JesJyz0yR0OjrmU 47/0sz42hoBCGc1EqvQqxR7PIcBNsnI/ezmpcNU+i9Hy5wZZMs2vcze4Uf8On9FhR8oZ ea9w== X-Gm-Message-State: AC+VfDyiRay3CNKSLEVvfa5gJYVFIEWyDdrcPXXTf8hplbGigGiKBtYf oH0BMcVjKHBqSlNuuEBjMGRidkfDcKSrIJK/dDjaMA+zd7/GcQMpiffB6dEp/k0R8YD1rIxYd4N bASQ1JwqpmDI5UjWPYHo3/+AEjKP3 X-Received: by 2002:a17:907:dac:b0:988:cd12:394f with SMTP id go44-20020a1709070dac00b00988cd12394fmr2694360ejc.64.1687221789699; Mon, 19 Jun 2023 17:43:09 -0700 (PDT) X-Google-Smtp-Source: ACHHUZ4xP20OP14QtWTYKMDFxUcI8tyei9H7kSIsx4sSRpOF3ILA1nMvgRz6IODTztwcgCzNjsKlew== X-Received: by 2002:a17:907:dac:b0:988:cd12:394f with SMTP id go44-20020a1709070dac00b00988cd12394fmr2694341ejc.64.1687221789530; Mon, 19 Jun 2023 17:43:09 -0700 (PDT) Received: from cassiopeiae.. ([2a02:810d:4b3f:de9c:642:1aff:fe31:a19f]) by smtp.gmail.com with ESMTPSA id bj2-20020a170906b04200b00988cb67ee1asm394934ejb.55.2023.06.19.17.43.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jun 2023 17:43:08 -0700 (PDT) From: Danilo Krummrich To: airlied@gmail.com, daniel@ffwll.ch, tzimmermann@suse.de, mripard@kernel.org, corbet@lwn.net, christian.koenig@amd.com, bskeggs@redhat.com, Liam.Howlett@oracle.com, matthew.brost@intel.com, boris.brezillon@collabora.com, alexdeucher@gmail.com, ogabbay@kernel.org, bagasdotme@gmail.com, willy@infradead.org, jason@jlekstrand.net Subject: [PATCH drm-next v5 09/14] drm/nouveau: fence: separate fence alloc and emit Date: Tue, 20 Jun 2023 02:42:12 +0200 Message-Id: <20230620004217.4700-10-dakr@redhat.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230620004217.4700-1-dakr@redhat.com> References: <20230620004217.4700-1-dakr@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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: linux-doc@vger.kernel.org, nouveau@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mm@kvack.org, Danilo Krummrich Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The new (VM_BIND) UAPI exports DMA fences through DRM syncobjs. Hence, in order to emit fences within DMA fence signalling critical sections (e.g. as typically done in the DRM GPU schedulers run_job() callback) we need to separate fence allocation and fence emitting. Signed-off-by: Danilo Krummrich --- drivers/gpu/drm/nouveau/dispnv04/crtc.c | 9 ++++- drivers/gpu/drm/nouveau/nouveau_bo.c | 52 +++++++++++++++---------- drivers/gpu/drm/nouveau/nouveau_chan.c | 6 ++- drivers/gpu/drm/nouveau/nouveau_dmem.c | 9 +++-- drivers/gpu/drm/nouveau/nouveau_fence.c | 16 +++----- drivers/gpu/drm/nouveau/nouveau_fence.h | 3 +- drivers/gpu/drm/nouveau/nouveau_gem.c | 5 ++- 7 files changed, 59 insertions(+), 41 deletions(-) diff --git a/drivers/gpu/drm/nouveau/dispnv04/crtc.c b/drivers/gpu/drm/nouveau/dispnv04/crtc.c index a6f2e681bde9..a34924523133 100644 --- a/drivers/gpu/drm/nouveau/dispnv04/crtc.c +++ b/drivers/gpu/drm/nouveau/dispnv04/crtc.c @@ -1122,11 +1122,18 @@ nv04_page_flip_emit(struct nouveau_channel *chan, PUSH_NVSQ(push, NV_SW, NV_SW_PAGE_FLIP, 0x00000000); PUSH_KICK(push); - ret = nouveau_fence_new(chan, false, pfence); + ret = nouveau_fence_new(pfence); if (ret) goto fail; + ret = nouveau_fence_emit(*pfence, chan); + if (ret) + goto fail_fence_unref; + return 0; + +fail_fence_unref: + nouveau_fence_unref(pfence); fail: spin_lock_irqsave(&dev->event_lock, flags); list_del(&s->head); diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 057bc995f19b..e9cbbf594e6f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -820,29 +820,39 @@ nouveau_bo_move_m2mf(struct ttm_buffer_object *bo, int evict, mutex_lock(&cli->mutex); else mutex_lock_nested(&cli->mutex, SINGLE_DEPTH_NESTING); + ret = nouveau_fence_sync(nouveau_bo(bo), chan, true, ctx->interruptible); - if (ret == 0) { - ret = drm->ttm.move(chan, bo, bo->resource, new_reg); - if (ret == 0) { - ret = nouveau_fence_new(chan, false, &fence); - if (ret == 0) { - /* TODO: figure out a better solution here - * - * wait on the fence here explicitly as going through - * ttm_bo_move_accel_cleanup somehow doesn't seem to do it. - * - * Without this the operation can timeout and we'll fallback to a - * software copy, which might take several minutes to finish. - */ - nouveau_fence_wait(fence, false, false); - ret = ttm_bo_move_accel_cleanup(bo, - &fence->base, - evict, false, - new_reg); - nouveau_fence_unref(&fence); - } - } + if (ret) + goto out_unlock; + + ret = drm->ttm.move(chan, bo, bo->resource, new_reg); + if (ret) + goto out_unlock; + + ret = nouveau_fence_new(&fence); + if (ret) + goto out_unlock; + + ret = nouveau_fence_emit(fence, chan); + if (ret) { + nouveau_fence_unref(&fence); + goto out_unlock; } + + /* TODO: figure out a better solution here + * + * wait on the fence here explicitly as going through + * ttm_bo_move_accel_cleanup somehow doesn't seem to do it. + * + * Without this the operation can timeout and we'll fallback to a + * software copy, which might take several minutes to finish. + */ + nouveau_fence_wait(fence, false, false); + ret = ttm_bo_move_accel_cleanup(bo, &fence->base, evict, false, + new_reg); + nouveau_fence_unref(&fence); + +out_unlock: mutex_unlock(&cli->mutex); return ret; } diff --git a/drivers/gpu/drm/nouveau/nouveau_chan.c b/drivers/gpu/drm/nouveau/nouveau_chan.c index 1068abe41024..f47c0363683c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_chan.c +++ b/drivers/gpu/drm/nouveau/nouveau_chan.c @@ -62,9 +62,11 @@ nouveau_channel_idle(struct nouveau_channel *chan) struct nouveau_fence *fence = NULL; int ret; - ret = nouveau_fence_new(chan, false, &fence); + ret = nouveau_fence_new(&fence); if (!ret) { - ret = nouveau_fence_wait(fence, false, false); + ret = nouveau_fence_emit(fence, chan); + if (!ret) + ret = nouveau_fence_wait(fence, false, false); nouveau_fence_unref(&fence); } diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c index 789857faa048..4ad40e42cae1 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dmem.c +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c @@ -209,7 +209,8 @@ static vm_fault_t nouveau_dmem_migrate_to_ram(struct vm_fault *vmf) goto done; } - nouveau_fence_new(dmem->migrate.chan, false, &fence); + if (!nouveau_fence_new(&fence)) + nouveau_fence_emit(fence, dmem->migrate.chan); migrate_vma_pages(&args); nouveau_dmem_fence_done(&fence); dma_unmap_page(drm->dev->dev, dma_addr, PAGE_SIZE, DMA_BIDIRECTIONAL); @@ -402,7 +403,8 @@ nouveau_dmem_evict_chunk(struct nouveau_dmem_chunk *chunk) } } - nouveau_fence_new(chunk->drm->dmem->migrate.chan, false, &fence); + if (!nouveau_fence_new(&fence)) + nouveau_fence_emit(fence, chunk->drm->dmem->migrate.chan); migrate_device_pages(src_pfns, dst_pfns, npages); nouveau_dmem_fence_done(&fence); migrate_device_finalize(src_pfns, dst_pfns, npages); @@ -675,7 +677,8 @@ static void nouveau_dmem_migrate_chunk(struct nouveau_drm *drm, addr += PAGE_SIZE; } - nouveau_fence_new(drm->dmem->migrate.chan, false, &fence); + if (!nouveau_fence_new(&fence)) + nouveau_fence_emit(fence, chunk->drm->dmem->migrate.chan); migrate_vma_pages(args); nouveau_dmem_fence_done(&fence); nouveau_pfns_map(svmm, args->vma->vm_mm, args->start, pfns, i); diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c index ee5e9d40c166..e946408f945b 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.c +++ b/drivers/gpu/drm/nouveau/nouveau_fence.c @@ -210,6 +210,9 @@ nouveau_fence_emit(struct nouveau_fence *fence, struct nouveau_channel *chan) struct nouveau_fence_priv *priv = (void*)chan->drm->fence; int ret; + if (unlikely(!chan->fence)) + return -ENODEV; + fence->channel = chan; fence->timeout = jiffies + (15 * HZ); @@ -396,25 +399,16 @@ nouveau_fence_unref(struct nouveau_fence **pfence) } int -nouveau_fence_new(struct nouveau_channel *chan, bool sysmem, - struct nouveau_fence **pfence) +nouveau_fence_new(struct nouveau_fence **pfence) { struct nouveau_fence *fence; - int ret = 0; - - if (unlikely(!chan->fence)) - return -ENODEV; fence = kzalloc(sizeof(*fence), GFP_KERNEL); if (!fence) return -ENOMEM; - ret = nouveau_fence_emit(fence, chan); - if (ret) - nouveau_fence_unref(&fence); - *pfence = fence; - return ret; + return 0; } static const char *nouveau_fence_get_get_driver_name(struct dma_fence *fence) diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.h b/drivers/gpu/drm/nouveau/nouveau_fence.h index 0ca2bc85adf6..7c73c7c9834a 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.h +++ b/drivers/gpu/drm/nouveau/nouveau_fence.h @@ -17,8 +17,7 @@ struct nouveau_fence { unsigned long timeout; }; -int nouveau_fence_new(struct nouveau_channel *, bool sysmem, - struct nouveau_fence **); +int nouveau_fence_new(struct nouveau_fence **); void nouveau_fence_unref(struct nouveau_fence **); int nouveau_fence_emit(struct nouveau_fence *, struct nouveau_channel *); diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index a48f42aaeab9..9c8d1b911a01 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -873,8 +873,11 @@ nouveau_gem_ioctl_pushbuf(struct drm_device *dev, void *data, } } - ret = nouveau_fence_new(chan, false, &fence); + ret = nouveau_fence_new(&fence); + if (!ret) + ret = nouveau_fence_emit(fence, chan); if (ret) { + nouveau_fence_unref(&fence); NV_PRINTK(err, cli, "error fencing pushbuf: %d\n", ret); WIND_RING(chan); goto out;