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Message-Id: <20200217154509.2265-5-christian.koenig@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200217154509.2265-1-christian.koenig@amd.com> References: <20200217154509.2265-1-christian.koenig@amd.com> MIME-Version: 1.0 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: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" VGhpcyBpbXBsZW1lbnRzIHRoZSBleHBvcnRlciBzaWRlIG9mIHVucGlubmVkIERNQS1idWYgaGFu ZGxpbmcuCgp2MjogZml4IG1pbm9yIGNvZGluZyBzdHlsZSBpc3N1ZXMKClNpZ25lZC1vZmYtYnk6 IENocmlzdGlhbiBLw7ZuaWcgPGNocmlzdGlhbi5rb2VuaWdAYW1kLmNvbT4KLS0tCiBkcml2ZXJz L2dwdS9kcm0vYW1kL2FtZGdwdS9hbWRncHVfZG1hX2J1Zi5jIHwgNTMgKysrKysrKysrKysrKysr KysrLS0tCiBkcml2ZXJzL2dwdS9kcm0vYW1kL2FtZGdwdS9hbWRncHVfb2JqZWN0LmMgIHwgIDUg 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<20200217154509.2265-1-christian.koenig@amd.com> References: <20200217154509.2265-1-christian.koenig@amd.com> MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 18 Feb 2020 17:16:57 +0000 Subject: [Intel-gfx] [PATCH 4/5] drm/amdgpu: add amdgpu_dma_buf_pin/unpin v2 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" VGhpcyBpbXBsZW1lbnRzIHRoZSBleHBvcnRlciBzaWRlIG9mIHVucGlubmVkIERNQS1idWYgaGFu ZGxpbmcuCgp2MjogZml4IG1pbm9yIGNvZGluZyBzdHlsZSBpc3N1ZXMKClNpZ25lZC1vZmYtYnk6 IENocmlzdGlhbiBLw7ZuaWcgPGNocmlzdGlhbi5rb2VuaWdAYW1kLmNvbT4KLS0tCiBkcml2ZXJz L2dwdS9kcm0vYW1kL2FtZGdwdS9hbWRncHVfZG1hX2J1Zi5jIHwgNTMgKysrKysrKysrKysrKysr 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by smtp.gmail.com with ESMTPSA id r6sm1372658wrq.92.2020.02.17.07.45.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 17 Feb 2020 07:45:16 -0800 (PST) From: "=?UTF-8?q?Christian=20K=C3=B6nig?=" X-Google-Original-From: =?UTF-8?q?Christian=20K=C3=B6nig?= To: dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-media@vger.kernel.org, intel-gfx@lists.freedesktop.org, daniel@ffwll.ch Subject: [PATCH 4/5] drm/amdgpu: add amdgpu_dma_buf_pin/unpin v2 Date: Mon, 17 Feb 2020 16:45:08 +0100 Message-Id: <20200217154509.2265-5-christian.koenig@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200217154509.2265-1-christian.koenig@amd.com> References: <20200217154509.2265-1-christian.koenig@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org This implements the exporter side of unpinned DMA-buf handling. v2: fix minor coding style issues Signed-off-by: Christian König --- drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 53 ++++++++++++++++++--- drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 5 ++ 2 files changed, 51 insertions(+), 7 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c index b2ca78b6abce..770baba621b3 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c @@ -222,6 +222,37 @@ static void amdgpu_dma_buf_detach(struct dma_buf *dmabuf, bo->prime_shared_count--; } +/** + * amdgpu_dma_buf_pin - &dma_buf_ops.pin implementation + * + * @attach: attachment to pin down + * + * Pin the BO which is backing the DMA-buf so that it can't move any more. + */ +static int amdgpu_dma_buf_pin(struct dma_buf_attachment *attach) +{ + struct drm_gem_object *obj = attach->dmabuf->priv; + struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); + + /* pin buffer into GTT */ + return amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_GTT); +} + +/** + * amdgpu_dma_buf_unpin - &dma_buf_ops.unpin implementation + * + * @attach: attachment to unpin + * + * Unpin a previously pinned BO to make it movable again. + */ +static void amdgpu_dma_buf_unpin(struct dma_buf_attachment *attach) +{ + struct drm_gem_object *obj = attach->dmabuf->priv; + struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); + + amdgpu_bo_unpin(bo); +} + /** * amdgpu_dma_buf_map - &dma_buf_ops.map_dma_buf implementation * @attach: DMA-buf attachment @@ -244,9 +275,19 @@ static struct sg_table *amdgpu_dma_buf_map(struct dma_buf_attachment *attach, struct sg_table *sgt; long r; - r = amdgpu_bo_pin(bo, AMDGPU_GEM_DOMAIN_GTT); - if (r) - return ERR_PTR(r); + if (!bo->pin_count) { + /* move buffer into GTT */ + struct ttm_operation_ctx ctx = { false, false }; + + amdgpu_bo_placement_from_domain(bo, AMDGPU_GEM_DOMAIN_GTT); + r = ttm_bo_validate(&bo->tbo, &bo->placement, &ctx); + if (r) + return ERR_PTR(r); + + } else if (!(amdgpu_mem_type_to_domain(bo->tbo.mem.mem_type) & + AMDGPU_GEM_DOMAIN_GTT)) { + return ERR_PTR(-EBUSY); + } sgt = drm_prime_pages_to_sg(bo->tbo.ttm->pages, bo->tbo.num_pages); if (IS_ERR(sgt)) @@ -277,13 +318,9 @@ static void amdgpu_dma_buf_unmap(struct dma_buf_attachment *attach, struct sg_table *sgt, enum dma_data_direction dir) { - struct drm_gem_object *obj = attach->dmabuf->priv; - struct amdgpu_bo *bo = gem_to_amdgpu_bo(obj); - dma_unmap_sg(attach->dev, sgt->sgl, sgt->nents, dir); sg_free_table(sgt); kfree(sgt); - amdgpu_bo_unpin(bo); } /** @@ -330,6 +367,8 @@ const struct dma_buf_ops amdgpu_dmabuf_ops = { .dynamic_mapping = true, .attach = amdgpu_dma_buf_attach, .detach = amdgpu_dma_buf_detach, + .pin = amdgpu_dma_buf_pin, + .unpin = amdgpu_dma_buf_unpin, .map_dma_buf = amdgpu_dma_buf_map, .unmap_dma_buf = amdgpu_dma_buf_unmap, .release = drm_gem_dmabuf_release, diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c index 6f60a581e3ba..8ae260822908 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c @@ -31,6 +31,7 @@ */ #include #include +#include #include #include @@ -1274,6 +1275,10 @@ void amdgpu_bo_move_notify(struct ttm_buffer_object *bo, amdgpu_bo_kunmap(abo); + if (abo->tbo.base.dma_buf && !abo->tbo.base.import_attach && + bo->mem.mem_type != TTM_PL_SYSTEM) + dma_buf_move_notify(abo->tbo.base.dma_buf); + /* remember the eviction */ if (evict) atomic64_inc(&adev->num_evictions); -- 2.17.1