From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 63384C10F14 for ; Tue, 16 Apr 2019 18:39:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2C988204FD for ; Tue, 16 Apr 2019 18:39:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="McTp+znF" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730496AbfDPSjD (ORCPT ); Tue, 16 Apr 2019 14:39:03 -0400 Received: from mail-wr1-f67.google.com ([209.85.221.67]:37038 "EHLO mail-wr1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730394AbfDPSi5 (ORCPT ); Tue, 16 Apr 2019 14:38:57 -0400 Received: by mail-wr1-f67.google.com with SMTP id w10so28530891wrm.4; Tue, 16 Apr 2019 11:38:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=ChKopfoupFge33png/zSgg0/Me6vW1jw2fNJBJMBrnc=; b=McTp+znFMf77DiIPnjsK1LrQkfN2cwQmcZtUief580NYmDQtHl/viqBJz7yD4miGdy VfEmX8sPT2xq00qcjYjn7fgXxzZue621wOyH4iaIp7u1G4kbLsQx7l6Txv+a5UO0Rgy8 dQO/nI+0ytdlV96XsGpldWxmIEvUBiVXF94m8EG45PbSBb1VB9ZVTMNdt25HyIQAjxCn Pd0WzUQn4TQBeX00zPgEJsF87VFts4c8A2Ti+lah7PbC8LbJja05xbgUbbOIdQ2pOpLc AMYdamPR8jHyw9dPQ0ZiH9CPDBshkQfAkpGLnnylpzefIQgJuCpXniV6KS292S31ubXI bh/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ChKopfoupFge33png/zSgg0/Me6vW1jw2fNJBJMBrnc=; b=RmXuXPIlACIX02c+e660lUK0Fhc0IM6LuYPVaCHIfoPwsr1w6ewMmxwt8fC8119wha ZK+Foe80e5PwBV4hAi/dtPH27+19Ir4/JfUj2Z+jtqaMXbsdZlI9ZtSKdJ0TcRkBoeoI rFtAak/OH1q0NI4onCmkIVwEu4ZVBbluBwe8Sa7EaRv72y7464TJKlPTAxv0o6ZRFMEc VfRVecuR/pqdbPvkU90dbwc6DoSP+BRsllPuSW2w+aAbwbrdeIqY5zC36qvqpTEraN/g o94vhCBYgIeXeOoQedzCkkhKSa+DORo6AueBzXbzHMV8VCEEKsteqn/YL6UEtm/FJ/3/ AP8A== X-Gm-Message-State: APjAAAXQKmp7Np7q2qr6LcqB8JdJv1ypmKkG1WaLkyaBz3xBcPgoLxY+ s4FiTkDzC/kwewzJT/1WIM8= X-Google-Smtp-Source: APXvYqwPsafk98sVT9BMZZD/IK2w6Yj4L+4ov86IKcyy9N2khLee5IFOC179tRpeueFmqMv3flzBOA== X-Received: by 2002:adf:ebd2:: with SMTP id v18mr55191326wrn.108.1555439935399; Tue, 16 Apr 2019 11:38:55 -0700 (PDT) Received: from abel.fritz.box ([2a02:908:1252:fb60:fcfa:e34f:82c0:3f66]) by smtp.gmail.com with ESMTPSA id m13sm128823wmg.42.2019.04.16.11.38.54 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 16 Apr 2019 11:38:54 -0700 (PDT) From: "=?UTF-8?q?Christian=20K=C3=B6nig?=" X-Google-Original-From: =?UTF-8?q?Christian=20K=C3=B6nig?= To: sumit.semwal@linaro.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, amd-gfx@lists.freedesktop.org Subject: [PATCH 10/12] drm/amdgpu: add independent DMA-buf import v4 Date: Tue, 16 Apr 2019 20:38:39 +0200 Message-Id: <20190416183841.1577-11-christian.koenig@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190416183841.1577-1-christian.koenig@amd.com> References: <20190416183841.1577-1-christian.koenig@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Instead of relying on the DRM functions just implement our own import functions. This prepares support for taking care of unpinned DMA-buf. v2: enable for all exporters, not just amdgpu, fix invalidation handling, lock reservation object while setting callback v3: change to new dma_buf attach interface v4: split out from unpinned DMA-buf work Signed-off-by: Christian König --- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 1 - drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h | 4 --- drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c | 42 +++++++++++++++-------- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 34 +++++++++++++++--- 4 files changed, 56 insertions(+), 25 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index f1815223a1a1..95195c427e85 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -1254,7 +1254,6 @@ static struct drm_driver kms_driver = { .gem_prime_export = amdgpu_gem_prime_export, .gem_prime_import = amdgpu_gem_prime_import, .gem_prime_res_obj = amdgpu_gem_prime_res_obj, - .gem_prime_import_sg_table = amdgpu_gem_prime_import_sg_table, .gem_prime_vmap = amdgpu_gem_prime_vmap, .gem_prime_vunmap = amdgpu_gem_prime_vunmap, .gem_prime_mmap = amdgpu_gem_prime_mmap, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h index 0c50d14a9739..01811d8aa8a9 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.h @@ -39,10 +39,6 @@ int amdgpu_gem_object_open(struct drm_gem_object *obj, void amdgpu_gem_object_close(struct drm_gem_object *obj, struct drm_file *file_priv); unsigned long amdgpu_gem_timeout(uint64_t timeout_ns); -struct drm_gem_object * -amdgpu_gem_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sg); struct dma_buf *amdgpu_gem_prime_export(struct drm_device *dev, struct drm_gem_object *gobj, int flags); diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c index 8d748f9d0292..56e2a606b9a1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_prime.c @@ -122,31 +122,28 @@ int amdgpu_gem_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma } /** - * amdgpu_gem_prime_import_sg_table - &drm_driver.gem_prime_import_sg_table - * implementation + * amdgpu_gem_prime_create_obj - create BO for DMA-buf import + * * @dev: DRM device - * @attach: DMA-buf attachment - * @sg: Scatter/gather table + * @dma_buf: DMA-buf * - * Imports shared DMA buffer memory exported by another device. + * Creates an empty SG BO for DMA-buf import. * * Returns: * A new GEM BO of the given DRM device, representing the memory * described by the given DMA-buf attachment and scatter/gather table. */ -struct drm_gem_object * -amdgpu_gem_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sg) +static struct drm_gem_object * +amdgpu_gem_prime_create_obj(struct drm_device *dev, struct dma_buf *dma_buf) { - struct reservation_object *resv = attach->dmabuf->resv; + struct reservation_object *resv = dma_buf->resv; struct amdgpu_device *adev = dev->dev_private; struct amdgpu_bo *bo; struct amdgpu_bo_param bp; int ret; memset(&bp, 0, sizeof(bp)); - bp.size = attach->dmabuf->size; + bp.size = dma_buf->size; bp.byte_align = PAGE_SIZE; bp.domain = AMDGPU_GEM_DOMAIN_CPU; bp.flags = 0; @@ -157,11 +154,9 @@ amdgpu_gem_prime_import_sg_table(struct drm_device *dev, if (ret) goto error; - bo->tbo.sg = sg; - bo->tbo.ttm->sg = sg; bo->allowed_domains = AMDGPU_GEM_DOMAIN_GTT; bo->preferred_domains = AMDGPU_GEM_DOMAIN_GTT; - if (attach->dmabuf->ops != &amdgpu_dmabuf_ops) + if (dma_buf->ops != &amdgpu_dmabuf_ops) bo->prime_shared_count = 1; ww_mutex_unlock(&resv->lock); @@ -417,6 +412,11 @@ struct dma_buf *amdgpu_gem_prime_export(struct drm_device *dev, struct drm_gem_object *amdgpu_gem_prime_import(struct drm_device *dev, struct dma_buf *dma_buf) { + struct dma_buf_attach_info attach_info = { + .dev = dev->dev, + .dmabuf = dma_buf, + }; + struct dma_buf_attachment *attach; struct drm_gem_object *obj; if (dma_buf->ops == &amdgpu_dmabuf_ops) { @@ -431,5 +431,17 @@ struct drm_gem_object *amdgpu_gem_prime_import(struct drm_device *dev, } } - return drm_gem_prime_import(dev, dma_buf); + obj = amdgpu_gem_prime_create_obj(dev, dma_buf); + if (IS_ERR(obj)) + return obj; + + attach = dma_buf_attach(&attach_info); + if (IS_ERR(attach)) { + drm_gem_object_put(obj); + return ERR_CAST(attach); + } + + get_dma_buf(dma_buf); + obj->import_attach = attach; + return obj; } diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index c14198737dcd..afccca5b1f5f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -44,6 +44,7 @@ #include #include #include +#include #include "amdgpu.h" #include "amdgpu_object.h" #include "amdgpu_trace.h" @@ -706,6 +707,7 @@ static unsigned long amdgpu_ttm_io_mem_pfn(struct ttm_buffer_object *bo, */ struct amdgpu_ttm_tt { struct ttm_dma_tt ttm; + struct drm_gem_object *gobj; u64 offset; uint64_t userptr; struct task_struct *usertask; @@ -1179,6 +1181,7 @@ static struct ttm_tt *amdgpu_ttm_tt_create(struct ttm_buffer_object *bo, return NULL; } gtt->ttm.ttm.func = &amdgpu_backend_func; + gtt->gobj = &ttm_to_amdgpu_bo(bo)->gem_base; /* allocate space for the uninitialized page entries */ if (ttm_sg_tt_init(>t->ttm, bo, page_flags)) { @@ -1199,7 +1202,6 @@ static int amdgpu_ttm_tt_populate(struct ttm_tt *ttm, { struct amdgpu_device *adev = amdgpu_ttm_adev(ttm->bdev); struct amdgpu_ttm_tt *gtt = (void *)ttm; - bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); /* user pages are bound by amdgpu_ttm_tt_pin_userptr() */ if (gtt && gtt->userptr) { @@ -1212,7 +1214,20 @@ static int amdgpu_ttm_tt_populate(struct ttm_tt *ttm, return 0; } - if (slave && ttm->sg) { + if (ttm->page_flags & TTM_PAGE_FLAG_SG) { + if (!ttm->sg) { + struct dma_buf_attachment *attach; + struct sg_table *sgt; + + attach = gtt->gobj->import_attach; + sgt = dma_buf_map_attachment_locked(attach, + DMA_BIDIRECTIONAL); + if (IS_ERR(sgt)) + return PTR_ERR(sgt); + + ttm->sg = sgt; + } + drm_prime_sg_to_page_addr_arrays(ttm->sg, ttm->pages, gtt->ttm.dma_address, ttm->num_pages); @@ -1239,9 +1254,8 @@ static int amdgpu_ttm_tt_populate(struct ttm_tt *ttm, */ static void amdgpu_ttm_tt_unpopulate(struct ttm_tt *ttm) { - struct amdgpu_device *adev; struct amdgpu_ttm_tt *gtt = (void *)ttm; - bool slave = !!(ttm->page_flags & TTM_PAGE_FLAG_SG); + struct amdgpu_device *adev; if (gtt && gtt->userptr) { amdgpu_ttm_tt_set_user_pages(ttm, NULL); @@ -1250,7 +1264,17 @@ static void amdgpu_ttm_tt_unpopulate(struct ttm_tt *ttm) return; } - if (slave) + if (ttm->sg && gtt->gobj->import_attach) { + struct dma_buf_attachment *attach; + + attach = gtt->gobj->import_attach; + dma_buf_unmap_attachment_locked(attach, ttm->sg, + DMA_BIDIRECTIONAL); + ttm->sg = NULL; + return; + } + + if (ttm->page_flags & TTM_PAGE_FLAG_SG) return; adev = amdgpu_ttm_adev(ttm->bdev); -- 2.17.1