From patchwork Tue Aug 18 07:48:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gerd Hoffmann X-Patchwork-Id: 11720249 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 5BC48722 for ; Tue, 18 Aug 2020 07:51:41 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 2876D2067C for ; Tue, 18 Aug 2020 07:51:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="CirFYGxx"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="icCZR1FJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2876D2067C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=d+ZE6VOuyiYTJCPbvV2gL2vMjU/tBL69B/uPqnlT+/s=; b=CirFYGxxfdnnNQ+Qb78LaoKoBP Gf25qggp1GbFOFezlyqoZSYpoqIc5zMD9tBZ2c5quKqru0IdwID1u+Pn6Ap7S1DHPGRpzxNwAcJhK q563ktOj2CdbQ5lpCvi8vlp1xmVuwhhI/7YrSNb/yDtq35Z7jqpMbkx82nchsXbZOkI5qPAUA9f7y f08G23iVdd669Yywcqhge2d+JqeHPL/sDzilM/lANTjD+Py6GfWbPhqwb0mIRFcvMjCfvXWgT6vpS FIjN2AUREgcODGdWJ/tCtw8g304UapjzzW5baB016lF8Nhfa7qA+Cg16GnLm3xiUMW3uls5Q4vKgF 2gNj/QzA==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1k7wNj-0008CO-LK; Tue, 18 Aug 2020 07:50:07 +0000 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1k7wNh-0008C0-2F for linux-arm-kernel@lists.infradead.org; Tue, 18 Aug 2020 07:50:06 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1597737004; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:in-reply-to:in-reply-to:references:references; bh=WanW9by5F/DHIgu66E+1I0NOXAa3iKuB6OXDjnbn69A=; b=icCZR1FJCAsUGE3sPK2C705ieCs/usNbPjHy3msKvsh3RtgFdf8saYNBnKfKLet6zRmvEj 7clYM1aRHVFBPuEQyuAkmsh+7r2KqsvuDtdAdnZosU24wN3YSWAx7JY3ZVH9Ri/S0GxoZh Ns1yZzDIdFXiYW9jQnLh6xBvVlXRgkE= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-256-B9KZxgOsOPCS3WTw1IRtxQ-1; Tue, 18 Aug 2020 03:48:38 -0400 X-MC-Unique: B9KZxgOsOPCS3WTw1IRtxQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 8DBFB1005E5F; Tue, 18 Aug 2020 07:48:34 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-112-195.ams2.redhat.com [10.36.112.195]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3153B7B8F9; Tue, 18 Aug 2020 07:48:30 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 5DC849D74; Tue, 18 Aug 2020 09:48:29 +0200 (CEST) From: Gerd Hoffmann To: dri-devel@lists.freedesktop.org Subject: [PATCH 1/2] drm: allow limiting the scatter list size. Date: Tue, 18 Aug 2020 09:48:27 +0200 Message-Id: <20200818074828.9509-2-kraxel@redhat.com> In-Reply-To: <20200818074828.9509-1-kraxel@redhat.com> References: <20200818074828.9509-1-kraxel@redhat.com> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200818_035005_287909_AAB58598 X-CRM114-Status: GOOD ( 19.74 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [63.128.21.124 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.0 SPF_NONE SPF: sender does not publish an SPF Record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?utf-8?q?Heiko_St=C3=BCbner?= , David Airlie , "open list:DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS" , Sandy Huang , Thierry Reding , Gerd Hoffmann , Oleksandr Andrushchenko , "open list:RADEON and AMDGPU DRM DRIVERS" , Jonathan Hunter , "open list:ARM/Rockchip SoC support" , Ben Skeggs , Russell King , "moderated list:DRM DRIVERS FOR XEN" , Daniel Vetter , "open list:DRM DRIVER FOR MSM ADRENO GPU" , Maarten Lankhorst , "moderated list:DRM DRIVERS FOR VIVANTE GPU IP" , Maxime Ripard , Christian Gmeiner , "open list:DRM DRIVERS FOR NVIDIA TEGRA" , Sean Paul , "moderated list:ARM/Rockchip SoC support" , open list , Rob Clark , Thomas Zimmermann , Alex Deucher , "open list:DRM DRIVER FOR MSM ADRENO GPU" , =?utf-8?q?Christian_K=C3=B6nig?= , Lucas Stach MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add max_segment argument to drm_prime_pages_to_sg(). When set pass it through to the __sg_alloc_table_from_pages() call, otherwise use SCATTERLIST_MAX_SEGMENT. Also add max_segment field to gem objects and pass it to drm_prime_pages_to_sg() calls in drivers and helpers. Signed-off-by: Gerd Hoffmann --- include/drm/drm_gem.h | 8 ++++++++ include/drm/drm_prime.h | 3 ++- drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 3 ++- drivers/gpu/drm/drm_gem_shmem_helper.c | 3 ++- drivers/gpu/drm/drm_prime.c | 10 +++++++--- drivers/gpu/drm/etnaviv/etnaviv_gem.c | 3 ++- drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c | 3 ++- drivers/gpu/drm/msm/msm_gem.c | 3 ++- drivers/gpu/drm/msm/msm_gem_prime.c | 3 ++- drivers/gpu/drm/nouveau/nouveau_prime.c | 3 ++- drivers/gpu/drm/radeon/radeon_prime.c | 3 ++- drivers/gpu/drm/rockchip/rockchip_drm_gem.c | 6 ++++-- drivers/gpu/drm/tegra/gem.c | 3 ++- drivers/gpu/drm/vgem/vgem_drv.c | 3 ++- drivers/gpu/drm/xen/xen_drm_front_gem.c | 3 ++- 15 files changed, 43 insertions(+), 17 deletions(-) diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h index 337a48321705..dea5e92e745b 100644 --- a/include/drm/drm_gem.h +++ b/include/drm/drm_gem.h @@ -241,6 +241,14 @@ struct drm_gem_object { */ size_t size; + /** + * @max_segment: + * + * Max size for scatter list segments. When unset the default + * (SCATTERLIST_MAX_SEGMENT) is used. + */ + size_t max_segment; + /** * @name: * diff --git a/include/drm/drm_prime.h b/include/drm/drm_prime.h index 9af7422b44cf..2c3689435cb4 100644 --- a/include/drm/drm_prime.h +++ b/include/drm/drm_prime.h @@ -88,7 +88,8 @@ void drm_gem_dmabuf_vunmap(struct dma_buf *dma_buf, void *vaddr); int drm_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); int drm_gem_dmabuf_mmap(struct dma_buf *dma_buf, struct vm_area_struct *vma); -struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages); +struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages, + size_t max_segment); struct dma_buf *drm_gem_prime_export(struct drm_gem_object *obj, int flags); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c index 519ce4427fce..5e8a9760b33f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c @@ -303,7 +303,8 @@ static struct sg_table *amdgpu_dma_buf_map(struct dma_buf_attachment *attach, switch (bo->tbo.mem.mem_type) { case TTM_PL_TT: sgt = drm_prime_pages_to_sg(bo->tbo.ttm->pages, - bo->tbo.num_pages); + bo->tbo.num_pages, + obj->max_segment); if (IS_ERR(sgt)) return sgt; diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c index 4b7cfbac4daa..cfb979d808fd 100644 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@ -656,7 +656,8 @@ struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_object *obj) WARN_ON(shmem->base.import_attach); - return drm_prime_pages_to_sg(shmem->pages, obj->size >> PAGE_SHIFT); + return drm_prime_pages_to_sg(shmem->pages, obj->size >> PAGE_SHIFT, + obj->max_segment); } EXPORT_SYMBOL_GPL(drm_gem_shmem_get_sg_table); diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 1693aa7c14b5..27c783fd6633 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -802,7 +802,8 @@ static const struct dma_buf_ops drm_gem_prime_dmabuf_ops = { * * This is useful for implementing &drm_gem_object_funcs.get_sg_table. */ -struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages) +struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_pages, + size_t max_segment) { struct sg_table *sg = NULL; int ret; @@ -813,8 +814,11 @@ struct sg_table *drm_prime_pages_to_sg(struct page **pages, unsigned int nr_page goto out; } - ret = sg_alloc_table_from_pages(sg, pages, nr_pages, 0, - nr_pages << PAGE_SHIFT, GFP_KERNEL); + if (max_segment == 0 || max_segment > SCATTERLIST_MAX_SEGMENT) + max_segment = SCATTERLIST_MAX_SEGMENT; + ret = __sg_alloc_table_from_pages(sg, pages, nr_pages, 0, + nr_pages << PAGE_SHIFT, + max_segment, GFP_KERNEL); if (ret) goto out; diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem.c b/drivers/gpu/drm/etnaviv/etnaviv_gem.c index f06e19e7be04..e5b6e7996f80 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem.c @@ -103,7 +103,8 @@ struct page **etnaviv_gem_get_pages(struct etnaviv_gem_object *etnaviv_obj) int npages = etnaviv_obj->base.size >> PAGE_SHIFT; struct sg_table *sgt; - sgt = drm_prime_pages_to_sg(etnaviv_obj->pages, npages); + sgt = drm_prime_pages_to_sg(etnaviv_obj->pages, npages, + etnaviv_obj->base.max_segment); if (IS_ERR(sgt)) { dev_err(dev->dev, "failed to allocate sgt: %ld\n", PTR_ERR(sgt)); diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c index 6d9e5c3c4dd5..f327676450bd 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_prime.c @@ -19,7 +19,8 @@ struct sg_table *etnaviv_gem_prime_get_sg_table(struct drm_gem_object *obj) if (WARN_ON(!etnaviv_obj->pages)) /* should have already pinned! */ return ERR_PTR(-EINVAL); - return drm_prime_pages_to_sg(etnaviv_obj->pages, npages); + return drm_prime_pages_to_sg(etnaviv_obj->pages, npages, + obj->max_segment); } void *etnaviv_gem_prime_vmap(struct drm_gem_object *obj) diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c index b2f49152b4d4..f805419bb84a 100644 --- a/drivers/gpu/drm/msm/msm_gem.c +++ b/drivers/gpu/drm/msm/msm_gem.c @@ -126,7 +126,8 @@ static struct page **get_pages(struct drm_gem_object *obj) msm_obj->pages = p; - msm_obj->sgt = drm_prime_pages_to_sg(p, npages); + msm_obj->sgt = drm_prime_pages_to_sg(p, npages, + obj->max_segment); if (IS_ERR(msm_obj->sgt)) { void *ptr = ERR_CAST(msm_obj->sgt); diff --git a/drivers/gpu/drm/msm/msm_gem_prime.c b/drivers/gpu/drm/msm/msm_gem_prime.c index d7c8948427fe..a5a412564c7f 100644 --- a/drivers/gpu/drm/msm/msm_gem_prime.c +++ b/drivers/gpu/drm/msm/msm_gem_prime.c @@ -19,7 +19,8 @@ struct sg_table *msm_gem_prime_get_sg_table(struct drm_gem_object *obj) if (WARN_ON(!msm_obj->pages)) /* should have already pinned! */ return NULL; - return drm_prime_pages_to_sg(msm_obj->pages, npages); + return drm_prime_pages_to_sg(msm_obj->pages, npages, + obj->max_segment); } void *msm_gem_prime_vmap(struct drm_gem_object *obj) diff --git a/drivers/gpu/drm/nouveau/nouveau_prime.c b/drivers/gpu/drm/nouveau/nouveau_prime.c index bae6a3eccee0..56a2e916d51a 100644 --- a/drivers/gpu/drm/nouveau/nouveau_prime.c +++ b/drivers/gpu/drm/nouveau/nouveau_prime.c @@ -32,7 +32,8 @@ struct sg_table *nouveau_gem_prime_get_sg_table(struct drm_gem_object *obj) struct nouveau_bo *nvbo = nouveau_gem_object(obj); int npages = nvbo->bo.num_pages; - return drm_prime_pages_to_sg(nvbo->bo.ttm->pages, npages); + return drm_prime_pages_to_sg(nvbo->bo.ttm->pages, npages, + obj->max_segment); } void *nouveau_gem_prime_vmap(struct drm_gem_object *obj) diff --git a/drivers/gpu/drm/radeon/radeon_prime.c b/drivers/gpu/drm/radeon/radeon_prime.c index b906e8fbd5f3..503e35625045 100644 --- a/drivers/gpu/drm/radeon/radeon_prime.c +++ b/drivers/gpu/drm/radeon/radeon_prime.c @@ -36,7 +36,8 @@ struct sg_table *radeon_gem_prime_get_sg_table(struct drm_gem_object *obj) struct radeon_bo *bo = gem_to_radeon_bo(obj); int npages = bo->tbo.num_pages; - return drm_prime_pages_to_sg(bo->tbo.ttm->pages, npages); + return drm_prime_pages_to_sg(bo->tbo.ttm->pages, npages, + obj->max_segment); } void *radeon_gem_prime_vmap(struct drm_gem_object *obj) diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c index b9275ba7c5a5..444657e03c16 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_gem.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_gem.c @@ -85,7 +85,8 @@ static int rockchip_gem_get_pages(struct rockchip_gem_object *rk_obj) rk_obj->num_pages = rk_obj->base.size >> PAGE_SHIFT; - rk_obj->sgt = drm_prime_pages_to_sg(rk_obj->pages, rk_obj->num_pages); + rk_obj->sgt = drm_prime_pages_to_sg(rk_obj->pages, rk_obj->num_pages, + rk_obj->base.max_segment); if (IS_ERR(rk_obj->sgt)) { ret = PTR_ERR(rk_obj->sgt); goto err_put_pages; @@ -442,7 +443,8 @@ struct sg_table *rockchip_gem_prime_get_sg_table(struct drm_gem_object *obj) int ret; if (rk_obj->pages) - return drm_prime_pages_to_sg(rk_obj->pages, rk_obj->num_pages); + return drm_prime_pages_to_sg(rk_obj->pages, rk_obj->num_pages, + obj->max_segment); sgt = kzalloc(sizeof(*sgt), GFP_KERNEL); if (!sgt) diff --git a/drivers/gpu/drm/tegra/gem.c b/drivers/gpu/drm/tegra/gem.c index 723df142a981..8d98b02a8d21 100644 --- a/drivers/gpu/drm/tegra/gem.c +++ b/drivers/gpu/drm/tegra/gem.c @@ -284,7 +284,8 @@ static int tegra_bo_get_pages(struct drm_device *drm, struct tegra_bo *bo) bo->num_pages = bo->gem.size >> PAGE_SHIFT; - bo->sgt = drm_prime_pages_to_sg(bo->pages, bo->num_pages); + bo->sgt = drm_prime_pages_to_sg(bo->pages, bo->num_pages, + bo->gem.max_segment); if (IS_ERR(bo->sgt)) { err = PTR_ERR(bo->sgt); goto put_pages; diff --git a/drivers/gpu/drm/vgem/vgem_drv.c b/drivers/gpu/drm/vgem/vgem_drv.c index 313339bbff90..d25c93b5a2c1 100644 --- a/drivers/gpu/drm/vgem/vgem_drv.c +++ b/drivers/gpu/drm/vgem/vgem_drv.c @@ -321,7 +321,8 @@ static struct sg_table *vgem_prime_get_sg_table(struct drm_gem_object *obj) { struct drm_vgem_gem_object *bo = to_vgem_bo(obj); - return drm_prime_pages_to_sg(bo->pages, bo->base.size >> PAGE_SHIFT); + return drm_prime_pages_to_sg(bo->pages, bo->base.size >> PAGE_SHIFT, + obj->max_segment); } static struct drm_gem_object* vgem_prime_import(struct drm_device *dev, diff --git a/drivers/gpu/drm/xen/xen_drm_front_gem.c b/drivers/gpu/drm/xen/xen_drm_front_gem.c index f0b85e094111..362fe5311b1b 100644 --- a/drivers/gpu/drm/xen/xen_drm_front_gem.c +++ b/drivers/gpu/drm/xen/xen_drm_front_gem.c @@ -179,7 +179,8 @@ struct sg_table *xen_drm_front_gem_get_sg_table(struct drm_gem_object *gem_obj) if (!xen_obj->pages) return ERR_PTR(-ENOMEM); - return drm_prime_pages_to_sg(xen_obj->pages, xen_obj->num_pages); + return drm_prime_pages_to_sg(xen_obj->pages, xen_obj->num_pages, + gem_obj->max_segment); } struct drm_gem_object *