From patchwork Mon Feb 22 12:43:26 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 385986 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 C0AA3C43381 for ; Mon, 22 Feb 2021 12:47:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 91EAA64F10 for ; Mon, 22 Feb 2021 12:47:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231174AbhBVMrN (ORCPT ); Mon, 22 Feb 2021 07:47:13 -0500 Received: from mx2.suse.de ([195.135.220.15]:36550 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231436AbhBVMoO (ORCPT ); Mon, 22 Feb 2021 07:44:14 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 92BBFB113; Mon, 22 Feb 2021 12:43:31 +0000 (UTC) From: Thomas Zimmermann To: daniel@ffwll.ch, airlied@linux.ie, maarten.lankhorst@linux.intel.com, mripard@kernel.org, yuq825@gmail.com, robh@kernel.org, tomeu.vizoso@collabora.com, steven.price@arm.com, alyssa.rosenzweig@collabora.com, eric@anholt.net, sumit.semwal@linaro.org, christian.koenig@amd.com, stern@rowland.harvard.edu Cc: dri-devel@lists.freedesktop.org, lima@lists.freedesktop.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, Thomas Zimmermann , Christoph Hellwig , Greg Kroah-Hartman , Johan Hovold , Andy Shevchenko , Sebastian Andrzej Siewior , Mathias Nyman , "Ahmed S. Darwish" , Oliver Neukum , Thomas Gleixner , Felipe Balbi , stable@vger.kernel.org Subject: [PATCH v2 1/3] drm: Support importing dmabufs into drivers without DMA Date: Mon, 22 Feb 2021 13:43:26 +0100 Message-Id: <20210222124328.27340-2-tzimmermann@suse.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210222124328.27340-1-tzimmermann@suse.de> References: <20210222124328.27340-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org USB devices cannot perform DMA and hence have no dma_mask set in their device structure. Importing dmabuf into a USB-based driver fails, which break joining and mirroring of display in X11. A corresponding error message is shown below. [ 60.050199] ------------[ cut here ]------------ [ 60.055092] WARNING: CPU: 0 PID: 1403 at kernel/dma/mapping.c:190 dma_map_sg_attrs+0x8f/0xc0 [ 60.064331] Modules linked in: af_packet(E) rfkill(E) dmi_sysfs(E) intel_rapl_msr(E) intel_rapl_common(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) ledtrig_audio(E) snd_hda_codec_hdmi(E) x86_pkg_temp_thermal(E) intel_powerclam) [ 60.064801] wmi(E) video(E) btrfs(E) blake2b_generic(E) libcrc32c(E) crc32c_intel(E) xor(E) raid6_pq(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) msr(E) efivarfs(E) [ 60.170778] CPU: 0 PID: 1403 Comm: Xorg.bin Tainted: G E 5.11.0-rc5-1-default+ #747 [ 60.179841] Hardware name: Dell Inc. OptiPlex 9020/0N4YC8, BIOS A24 10/24/2018 [ 60.187145] RIP: 0010:dma_map_sg_attrs+0x8f/0xc0 [ 60.191822] Code: 4d 85 ff 75 2b 49 89 d8 44 89 e1 44 89 f2 4c 89 ee 48 89 ef e8 62 30 00 00 85 c0 78 36 5b 5d 41 5c 41 5d 41 5e 41 5f c3 0f 0b <0f> 0b 31 c0 eb ed 49 8d 7f 50 e8 72 f5 2a 00 49 8b 47 50 49 89 d8 [ 60.210770] RSP: 0018:ffffc90001d6fc18 EFLAGS: 00010246 [ 60.216062] RAX: 0000000000000000 RBX: 0000000000000020 RCX: ffffffffb31e677b [ 60.223274] RDX: dffffc0000000000 RSI: ffff888212c10600 RDI: ffff8881b08a9488 [ 60.230501] RBP: ffff8881b08a9030 R08: 0000000000000020 R09: ffff888212c10600 [ 60.237710] R10: ffffed10425820df R11: 0000000000000001 R12: 0000000000000000 [ 60.244939] R13: ffff888212c10600 R14: 0000000000000008 R15: 0000000000000000 [ 60.252155] FS: 00007f08ac2b2f00(0000) GS:ffff8887cbe00000(0000) knlGS:0000000000000000 [ 60.260333] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.266150] CR2: 000055831c899be8 CR3: 000000015372e006 CR4: 00000000001706f0 [ 60.273369] Call Trace: [ 60.275845] drm_gem_map_dma_buf+0xb4/0x120 [ 60.280089] dma_buf_map_attachment+0x15d/0x1e0 [ 60.284688] drm_gem_prime_import_dev.part.0+0x5d/0x140 [ 60.289984] drm_gem_prime_fd_to_handle+0x213/0x280 [ 60.294931] ? drm_prime_destroy_file_private+0x30/0x30 [ 60.300224] drm_ioctl_kernel+0x131/0x180 [ 60.304291] ? drm_setversion+0x230/0x230 [ 60.308366] ? drm_prime_destroy_file_private+0x30/0x30 [ 60.313659] drm_ioctl+0x2f1/0x500 [ 60.317118] ? drm_version+0x150/0x150 [ 60.320903] ? lock_downgrade+0xa0/0xa0 [ 60.324806] ? do_vfs_ioctl+0x5f4/0x680 [ 60.328694] ? __fget_files+0x13e/0x210 [ 60.332591] ? ioctl_fiemap.isra.0+0x1a0/0x1a0 [ 60.337102] ? __fget_files+0x15d/0x210 [ 60.340990] __x64_sys_ioctl+0xb9/0xf0 [ 60.344795] do_syscall_64+0x33/0x80 [ 60.348427] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.353542] RIP: 0033:0x7f08ac7b53cb [ 60.357168] Code: 89 d8 49 8d 3c 1c 48 f7 d8 49 39 c4 72 b5 e8 1c ff ff ff 85 c0 78 ba 4c 89 e0 5b 5d 41 5c c3 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 75 ba 0c 00 f7 d8 64 89 01 48 [ 60.376108] RSP: 002b:00007ffeabc89fc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 60.383758] RAX: ffffffffffffffda RBX: 00007ffeabc8a00c RCX: 00007f08ac7b53cb [ 60.390970] RDX: 00007ffeabc8a00c RSI: 00000000c00c642e RDI: 000000000000000d [ 60.398221] RBP: 00000000c00c642e R08: 000055831c691d00 R09: 000055831b2ec010 [ 60.405446] R10: 00007f08acf6ada0 R11: 0000000000000246 R12: 000055831c691d00 [ 60.412667] R13: 000000000000000d R14: 00000000007e9000 R15: 0000000000000000 [ 60.419903] irq event stamp: 672893 [ 60.423441] hardirqs last enabled at (672913): [] console_unlock+0x44d/0x500 [ 60.432230] hardirqs last disabled at (672922): [] console_unlock+0x443/0x500 [ 60.441021] softirqs last enabled at (672940): [] __do_softirq+0x3dd/0x554 [ 60.449634] softirqs last disabled at (672931): [] asm_call_irq_on_stack+0x12/0x20 [ 60.458871] ---[ end trace f2f88696eb17806c ]--- This patch introduces struct drm_driver.gem_prime_create_object, which creates a GEM object during the import. Drivers should implement this callback and handle DMA S/G table support by themselves. For USB-based drivers, the patch adds an implementation without DMA-related code. The original interface struct drm_driver.gem_prime_import_sg_table is deprecated. All drivers should switch over. Tested by joining/mirroring displays of udl and radeon un der Gnome/X11. Signed-off-by: Thomas Zimmermann Fixes: 6eb0233ec2d0 ("usb: don't inherity DMA properties for USB devices") Cc: Christoph Hellwig Cc: Greg Kroah-Hartman Cc: Alan Stern Cc: Johan Hovold Cc: Andy Shevchenko Cc: Sebastian Andrzej Siewior Cc: Mathias Nyman Cc: "Ahmed S. Darwish" Cc: Oliver Neukum Cc: Thomas Gleixner Cc: Felipe Balbi Cc: # v5.10+ --- drivers/gpu/drm/drm_prime.c | 43 +++++++++++++++++++++------------ drivers/gpu/drm/tiny/gm12u320.c | 7 ++++++ drivers/gpu/drm/udl/udl_drv.c | 7 ++++++ include/drm/drm_drv.h | 12 +++++++++ 4 files changed, 54 insertions(+), 15 deletions(-) diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index 2a54f86856af..9bb30e843a44 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -923,7 +923,8 @@ struct drm_gem_object *drm_gem_prime_import_dev(struct drm_device *dev, } } - if (!dev->driver->gem_prime_import_sg_table) + if (!dev->driver->gem_prime_import_sg_table && + !dev->driver->gem_prime_create_object) return ERR_PTR(-EINVAL); attach = dma_buf_attach(dma_buf, attach_dev); @@ -932,25 +933,37 @@ struct drm_gem_object *drm_gem_prime_import_dev(struct drm_device *dev, get_dma_buf(dma_buf); - sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL); - if (IS_ERR(sgt)) { - ret = PTR_ERR(sgt); - goto fail_detach; - } + if (dev->driver->gem_prime_create_object) { + obj = dev->driver->gem_prime_create_object(dev, attach); + if (IS_ERR(obj)) { + ret = PTR_ERR(obj); + goto fail_detach; + } - obj = dev->driver->gem_prime_import_sg_table(dev, attach, sgt); - if (IS_ERR(obj)) { - ret = PTR_ERR(obj); - goto fail_unmap; - } + if (!obj->import_attach) + obj->import_attach = attach; + if (!obj->resv) + obj->resv = dma_buf->resv; + } else { + sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL); + if (IS_ERR(sgt)) { + ret = PTR_ERR(sgt); + goto fail_detach; + } - obj->import_attach = attach; - obj->resv = dma_buf->resv; + obj = dev->driver->gem_prime_import_sg_table(dev, attach, sgt); + if (IS_ERR(obj)) { + ret = PTR_ERR(obj); + dma_buf_unmap_attachment(attach, sgt, DMA_BIDIRECTIONAL); + goto fail_detach; + } + + obj->import_attach = attach; + obj->resv = dma_buf->resv; + } return obj; -fail_unmap: - dma_buf_unmap_attachment(attach, sgt, DMA_BIDIRECTIONAL); fail_detach: dma_buf_detach(dma_buf, attach); dma_buf_put(dma_buf); diff --git a/drivers/gpu/drm/tiny/gm12u320.c b/drivers/gpu/drm/tiny/gm12u320.c index 0b4f4f2af1ef..9f13a7c7c2da 100644 --- a/drivers/gpu/drm/tiny/gm12u320.c +++ b/drivers/gpu/drm/tiny/gm12u320.c @@ -601,6 +601,12 @@ static const uint64_t gm12u320_pipe_modifiers[] = { DEFINE_DRM_GEM_FOPS(gm12u320_fops); +static struct drm_gem_object *gm12u320_gem_prime_create_object(struct drm_device *dev, + struct dma_buf_attachment *attach) +{ + return drm_gem_shmem_prime_import_sg_table(dev, attach, NULL); +} + static const struct drm_driver gm12u320_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC, @@ -612,6 +618,7 @@ static const struct drm_driver gm12u320_drm_driver = { .fops = &gm12u320_fops, DRM_GEM_SHMEM_DRIVER_OPS, + .gem_prime_create_object = gm12u320_gem_prime_create_object, }; static const struct drm_mode_config_funcs gm12u320_mode_config_funcs = { diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index 9269092697d8..fdf37b44a956 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -34,12 +34,19 @@ static int udl_usb_resume(struct usb_interface *interface) DEFINE_DRM_GEM_FOPS(udl_driver_fops); +static struct drm_gem_object *udl_gem_prime_create_object(struct drm_device *dev, + struct dma_buf_attachment *attach) +{ + return drm_gem_shmem_prime_import_sg_table(dev, attach, NULL); +} + static const struct drm_driver driver = { .driver_features = DRIVER_ATOMIC | DRIVER_GEM | DRIVER_MODESET, /* GEM hooks */ .fops = &udl_driver_fops, DRM_GEM_SHMEM_DRIVER_OPS, + .gem_prime_create_object = udl_gem_prime_create_object, .name = DRIVER_NAME, .desc = DRIVER_DESC, diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h index 827838e0a97e..77657d649ca6 100644 --- a/include/drm/drm_drv.h +++ b/include/drm/drm_drv.h @@ -369,11 +369,23 @@ struct drm_driver { */ struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, struct dma_buf *dma_buf); + /** + * @gem_prime_create_object: + * + * Optional hook used by the PRIME helper functions + * drm_gem_prime_import() respectively drm_gem_prime_import_dev(). + */ + struct drm_gem_object *(*gem_prime_create_object)( + struct drm_device *dev, + struct dma_buf_attachment *attach); /** * @gem_prime_import_sg_table: * * Optional hook used by the PRIME helper functions * drm_gem_prime_import() respectively drm_gem_prime_import_dev(). + * + * TODO: This function is deprecated in favor of @drm_driver.gem_prime_create_object. + * Drivers should switch over and implement SG-table support by themselves. */ struct drm_gem_object *(*gem_prime_import_sg_table)( struct drm_device *dev, From patchwork Mon Feb 22 12:43:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 385987 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 A8DDAC433E9 for ; Mon, 22 Feb 2021 12:46:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7277464F07 for ; Mon, 22 Feb 2021 12:46:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231499AbhBVMqj (ORCPT ); Mon, 22 Feb 2021 07:46:39 -0500 Received: from mx2.suse.de ([195.135.220.15]:36588 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231447AbhBVMoO (ORCPT ); Mon, 22 Feb 2021 07:44:14 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 4C3B4B114; Mon, 22 Feb 2021 12:43:32 +0000 (UTC) From: Thomas Zimmermann To: daniel@ffwll.ch, airlied@linux.ie, maarten.lankhorst@linux.intel.com, mripard@kernel.org, yuq825@gmail.com, robh@kernel.org, tomeu.vizoso@collabora.com, steven.price@arm.com, alyssa.rosenzweig@collabora.com, eric@anholt.net, sumit.semwal@linaro.org, christian.koenig@amd.com, stern@rowland.harvard.edu Cc: dri-devel@lists.freedesktop.org, lima@lists.freedesktop.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, Thomas Zimmermann Subject: [PATCH v2 2/3] drm/shmem-helper: Implement struct drm_driver.gem_prime_create_object Date: Mon, 22 Feb 2021 13:43:27 +0100 Message-Id: <20210222124328.27340-3-tzimmermann@suse.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210222124328.27340-1-tzimmermann@suse.de> References: <20210222124328.27340-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Moves the scatter/gather-table setup from PRIME helpers into SHMEM helpers. USB-based drivers don't support DMA, so make the sg table optional. This cleans up rsp code in udl and gm12u320. Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/drm_gem_shmem_helper.c | 38 +++++++++++++++++-------- drivers/gpu/drm/lima/lima_drv.c | 2 +- drivers/gpu/drm/panfrost/panfrost_drv.c | 2 +- drivers/gpu/drm/panfrost/panfrost_gem.c | 6 ++-- drivers/gpu/drm/panfrost/panfrost_gem.h | 4 +-- drivers/gpu/drm/tiny/gm12u320.c | 7 ----- drivers/gpu/drm/udl/udl_drv.c | 7 ----- drivers/gpu/drm/v3d/v3d_bo.c | 6 ++-- drivers/gpu/drm/v3d/v3d_drv.c | 2 +- drivers/gpu/drm/v3d/v3d_drv.h | 5 ++-- include/drm/drm_gem_shmem_helper.h | 6 ++-- 11 files changed, 38 insertions(+), 47 deletions(-) diff --git a/drivers/gpu/drm/drm_gem_shmem_helper.c b/drivers/gpu/drm/drm_gem_shmem_helper.c index c8a6547a1757..d11154ec0db5 100644 --- a/drivers/gpu/drm/drm_gem_shmem_helper.c +++ b/drivers/gpu/drm/drm_gem_shmem_helper.c @@ -711,36 +711,50 @@ struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_object *obj) EXPORT_SYMBOL_GPL(drm_gem_shmem_get_pages_sgt); /** - * drm_gem_shmem_prime_import_sg_table - Produce a shmem GEM object from - * another driver's scatter/gather table of pinned pages + * drm_gem_shmem_prime_create_object - Produce a shmem GEM object from + * another driver's DMA-BUF attachment * @dev: Device to import into * @attach: DMA-BUF attachment - * @sgt: Scatter/gather table of pinned pages * - * This function imports a scatter/gather table exported via DMA-BUF by - * another driver. Drivers that use the shmem helpers should set this as their - * &drm_driver.gem_prime_import_sg_table callback. + * This function imports a DMA-BUF attachment exported by another driver. + * If supported, it sets a scatter/gather table of pinned pages. Drivers + * that use the shmem helpers should set this as their + * &drm_driver.gem_prime_create_object callback. * * Returns: * A pointer to a newly created GEM object or an ERR_PTR-encoded negative * error code on failure. */ struct drm_gem_object * -drm_gem_shmem_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt) +drm_gem_shmem_prime_create_object(struct drm_device *dev, + struct dma_buf_attachment *attach) { size_t size = PAGE_ALIGN(attach->dmabuf->size); + struct sg_table *sgt = NULL; struct drm_gem_shmem_object *shmem; + int ret; + + if (dev->dev->dma_mask) { + sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL); + if (IS_ERR(sgt)) + return ERR_CAST(sgt); + } shmem = __drm_gem_shmem_create(dev, size, true); - if (IS_ERR(shmem)) - return ERR_CAST(shmem); + if (IS_ERR(shmem)) { + ret = PTR_ERR(shmem); + goto err; + } shmem->sgt = sgt; DRM_DEBUG_PRIME("size = %zu\n", size); return &shmem->base; + +err: + if (sgt) + dma_buf_unmap_attachment(attach, sgt, DMA_BIDIRECTIONAL); + return ERR_PTR(ret); } -EXPORT_SYMBOL_GPL(drm_gem_shmem_prime_import_sg_table); +EXPORT_SYMBOL_GPL(drm_gem_shmem_prime_create_object); diff --git a/drivers/gpu/drm/lima/lima_drv.c b/drivers/gpu/drm/lima/lima_drv.c index 7b8d7178d09a..c8090289ecc7 100644 --- a/drivers/gpu/drm/lima/lima_drv.c +++ b/drivers/gpu/drm/lima/lima_drv.c @@ -277,8 +277,8 @@ static const struct drm_driver lima_drm_driver = { .gem_create_object = lima_gem_create_object, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, - .gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, + .gem_prime_create_object = drm_gem_shmem_prime_create_object, .gem_prime_mmap = drm_gem_prime_mmap, }; diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c index 83a461bdeea8..8c0979e1926e 100644 --- a/drivers/gpu/drm/panfrost/panfrost_drv.c +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c @@ -564,7 +564,7 @@ static const struct drm_driver panfrost_drm_driver = { .gem_create_object = panfrost_gem_create_object, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, - .gem_prime_import_sg_table = panfrost_gem_prime_import_sg_table, + .gem_prime_create_object = panfrost_gem_prime_create_object, .gem_prime_mmap = drm_gem_prime_mmap, }; diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panfrost/panfrost_gem.c index 3e0723bc36bd..69bb70180ac1 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gem.c +++ b/drivers/gpu/drm/panfrost/panfrost_gem.c @@ -269,14 +269,12 @@ panfrost_gem_create_with_handle(struct drm_file *file_priv, } struct drm_gem_object * -panfrost_gem_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt) +panfrost_gem_prime_create_object(struct drm_device *dev, struct dma_buf_attachment *attach) { struct drm_gem_object *obj; struct panfrost_gem_object *bo; - obj = drm_gem_shmem_prime_import_sg_table(dev, attach, sgt); + obj = drm_gem_shmem_prime_create_object(dev, attach); if (IS_ERR(obj)) return ERR_CAST(obj); diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.h b/drivers/gpu/drm/panfrost/panfrost_gem.h index 8088d5fd8480..37b8cb4c6626 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gem.h +++ b/drivers/gpu/drm/panfrost/panfrost_gem.h @@ -64,9 +64,7 @@ drm_mm_node_to_panfrost_mapping(struct drm_mm_node *node) struct drm_gem_object *panfrost_gem_create_object(struct drm_device *dev, size_t size); struct drm_gem_object * -panfrost_gem_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt); +panfrost_gem_prime_create_object(struct drm_device *dev, struct dma_buf_attachment *attach); struct panfrost_gem_object * panfrost_gem_create_with_handle(struct drm_file *file_priv, diff --git a/drivers/gpu/drm/tiny/gm12u320.c b/drivers/gpu/drm/tiny/gm12u320.c index 9f13a7c7c2da..0b4f4f2af1ef 100644 --- a/drivers/gpu/drm/tiny/gm12u320.c +++ b/drivers/gpu/drm/tiny/gm12u320.c @@ -601,12 +601,6 @@ static const uint64_t gm12u320_pipe_modifiers[] = { DEFINE_DRM_GEM_FOPS(gm12u320_fops); -static struct drm_gem_object *gm12u320_gem_prime_create_object(struct drm_device *dev, - struct dma_buf_attachment *attach) -{ - return drm_gem_shmem_prime_import_sg_table(dev, attach, NULL); -} - static const struct drm_driver gm12u320_drm_driver = { .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_ATOMIC, @@ -618,7 +612,6 @@ static const struct drm_driver gm12u320_drm_driver = { .fops = &gm12u320_fops, DRM_GEM_SHMEM_DRIVER_OPS, - .gem_prime_create_object = gm12u320_gem_prime_create_object, }; static const struct drm_mode_config_funcs gm12u320_mode_config_funcs = { diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c index fdf37b44a956..9269092697d8 100644 --- a/drivers/gpu/drm/udl/udl_drv.c +++ b/drivers/gpu/drm/udl/udl_drv.c @@ -34,19 +34,12 @@ static int udl_usb_resume(struct usb_interface *interface) DEFINE_DRM_GEM_FOPS(udl_driver_fops); -static struct drm_gem_object *udl_gem_prime_create_object(struct drm_device *dev, - struct dma_buf_attachment *attach) -{ - return drm_gem_shmem_prime_import_sg_table(dev, attach, NULL); -} - static const struct drm_driver driver = { .driver_features = DRIVER_ATOMIC | DRIVER_GEM | DRIVER_MODESET, /* GEM hooks */ .fops = &udl_driver_fops, DRM_GEM_SHMEM_DRIVER_OPS, - .gem_prime_create_object = udl_gem_prime_create_object, .name = DRIVER_NAME, .desc = DRIVER_DESC, diff --git a/drivers/gpu/drm/v3d/v3d_bo.c b/drivers/gpu/drm/v3d/v3d_bo.c index 6a8731ab9d7d..37f65cb44703 100644 --- a/drivers/gpu/drm/v3d/v3d_bo.c +++ b/drivers/gpu/drm/v3d/v3d_bo.c @@ -146,14 +146,12 @@ struct v3d_bo *v3d_bo_create(struct drm_device *dev, struct drm_file *file_priv, } struct drm_gem_object * -v3d_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt) +v3d_prime_create_object(struct drm_device *dev, struct dma_buf_attachment *attach) { struct drm_gem_object *obj; int ret; - obj = drm_gem_shmem_prime_import_sg_table(dev, attach, sgt); + obj = drm_gem_shmem_prime_create_object(dev, attach); if (IS_ERR(obj)) return obj; diff --git a/drivers/gpu/drm/v3d/v3d_drv.c b/drivers/gpu/drm/v3d/v3d_drv.c index 99e22beea90b..72d50e240726 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.c +++ b/drivers/gpu/drm/v3d/v3d_drv.c @@ -173,7 +173,7 @@ static const struct drm_driver v3d_drm_driver = { .gem_create_object = v3d_create_object, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, - .gem_prime_import_sg_table = v3d_prime_import_sg_table, + .gem_prime_create_object = v3d_prime_create_object, .gem_prime_mmap = drm_gem_prime_mmap, .ioctls = v3d_drm_ioctls, diff --git a/drivers/gpu/drm/v3d/v3d_drv.h b/drivers/gpu/drm/v3d/v3d_drv.h index 8a390738d65b..6e4f3eb0b9fc 100644 --- a/drivers/gpu/drm/v3d/v3d_drv.h +++ b/drivers/gpu/drm/v3d/v3d_drv.h @@ -310,9 +310,8 @@ int v3d_mmap_bo_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); int v3d_get_bo_offset_ioctl(struct drm_device *dev, void *data, struct drm_file *file_priv); -struct drm_gem_object *v3d_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt); +struct drm_gem_object *v3d_prime_create_object(struct drm_device *dev, + struct dma_buf_attachment *attach); /* v3d_debugfs.c */ void v3d_debugfs_init(struct drm_minor *minor); diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h index 434328d8a0d9..837f3b5a83af 100644 --- a/include/drm/drm_gem_shmem_helper.h +++ b/include/drm/drm_gem_shmem_helper.h @@ -143,9 +143,7 @@ void drm_gem_shmem_print_info(struct drm_printer *p, unsigned int indent, struct sg_table *drm_gem_shmem_get_sg_table(struct drm_gem_object *obj); struct drm_gem_object * -drm_gem_shmem_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt); +drm_gem_shmem_prime_create_object(struct drm_device *dev, struct dma_buf_attachment *attach); struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_object *obj); @@ -158,7 +156,7 @@ struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_object *obj); #define DRM_GEM_SHMEM_DRIVER_OPS \ .prime_handle_to_fd = drm_gem_prime_handle_to_fd, \ .prime_fd_to_handle = drm_gem_prime_fd_to_handle, \ - .gem_prime_import_sg_table = drm_gem_shmem_prime_import_sg_table, \ + .gem_prime_create_object = drm_gem_shmem_prime_create_object, \ .gem_prime_mmap = drm_gem_prime_mmap, \ .dumb_create = drm_gem_shmem_dumb_create From patchwork Mon Feb 22 12:43:28 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 386459 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 7D63EC433DB for ; Mon, 22 Feb 2021 12:47:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 39C2C64E20 for ; Mon, 22 Feb 2021 12:47:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231575AbhBVMqu (ORCPT ); Mon, 22 Feb 2021 07:46:50 -0500 Received: from mx2.suse.de ([195.135.220.15]:36618 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231460AbhBVMoP (ORCPT ); Mon, 22 Feb 2021 07:44:15 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 099C7B117; Mon, 22 Feb 2021 12:43:33 +0000 (UTC) From: Thomas Zimmermann To: daniel@ffwll.ch, airlied@linux.ie, maarten.lankhorst@linux.intel.com, mripard@kernel.org, yuq825@gmail.com, robh@kernel.org, tomeu.vizoso@collabora.com, steven.price@arm.com, alyssa.rosenzweig@collabora.com, eric@anholt.net, sumit.semwal@linaro.org, christian.koenig@amd.com, stern@rowland.harvard.edu Cc: dri-devel@lists.freedesktop.org, lima@lists.freedesktop.org, linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org, Thomas Zimmermann Subject: [PATCH v2 3/3] drm/cma-helper: Implement struct drm_driver.gem_prime_create_object Date: Mon, 22 Feb 2021 13:43:28 +0100 Message-Id: <20210222124328.27340-4-tzimmermann@suse.de> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210222124328.27340-1-tzimmermann@suse.de> References: <20210222124328.27340-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Moves the scatter/gather-table setup from PRIME helpers into CMA helpers. No functional changes. Signed-off-by: Thomas Zimmermann --- drivers/gpu/drm/drm_gem_cma_helper.c | 62 ++++++++++++++++------------ drivers/gpu/drm/pl111/pl111_drv.c | 8 ++-- include/drm/drm_gem_cma_helper.h | 12 ++---- 3 files changed, 42 insertions(+), 40 deletions(-) diff --git a/drivers/gpu/drm/drm_gem_cma_helper.c b/drivers/gpu/drm/drm_gem_cma_helper.c index 7942cf05cd93..7200d0ae2e38 100644 --- a/drivers/gpu/drm/drm_gem_cma_helper.c +++ b/drivers/gpu/drm/drm_gem_cma_helper.c @@ -404,37 +404,44 @@ struct sg_table *drm_gem_cma_get_sg_table(struct drm_gem_object *obj) EXPORT_SYMBOL_GPL(drm_gem_cma_get_sg_table); /** - * drm_gem_cma_prime_import_sg_table - produce a CMA GEM object from another - * driver's scatter/gather table of pinned pages + * drm_gem_cma_prime_create_object - produce a CMA GEM object from another + * driver's DMA-BUF attachment * @dev: device to import into * @attach: DMA-BUF attachment - * @sgt: scatter/gather table of pinned pages * - * This function imports a scatter/gather table exported via DMA-BUF by - * another driver. Imported buffers must be physically contiguous in memory - * (i.e. the scatter/gather table must contain a single entry). Drivers that - * use the CMA helpers should set this as their - * &drm_driver.gem_prime_import_sg_table callback. + * This function imports a DMA-BUF exported by another driver. It sets a + * scatter/gather table of pinned pages. Imported buffers must be physically + * contiguous in memory (i.e. the scatter/gather table must contain a single + * entry). Drivers that use the CMA helpers should set this as their + * &drm_driver.gem_prime_create_object callback. * * Returns: * A pointer to a newly created GEM object or an ERR_PTR-encoded negative * error code on failure. */ struct drm_gem_object * -drm_gem_cma_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt) +drm_gem_cma_prime_create_object(struct drm_device *dev, struct dma_buf_attachment *attach) { + struct sg_table *sgt; struct drm_gem_cma_object *cma_obj; + int ret; + + sgt = dma_buf_map_attachment(attach, DMA_BIDIRECTIONAL); + if (IS_ERR(sgt)) + return ERR_CAST(sgt); /* check if the entries in the sg_table are contiguous */ - if (drm_prime_get_contiguous_size(sgt) < attach->dmabuf->size) - return ERR_PTR(-EINVAL); + if (drm_prime_get_contiguous_size(sgt) < attach->dmabuf->size) { + ret = -EINVAL; + goto err; + } /* Create a CMA GEM buffer. */ cma_obj = __drm_gem_cma_create(dev, attach->dmabuf->size); - if (IS_ERR(cma_obj)) - return ERR_CAST(cma_obj); + if (IS_ERR(cma_obj)) { + ret = PTR_ERR(cma_obj); + goto err; + } cma_obj->paddr = sg_dma_address(sgt->sgl); cma_obj->sgt = sgt; @@ -442,8 +449,12 @@ drm_gem_cma_prime_import_sg_table(struct drm_device *dev, DRM_DEBUG_PRIME("dma_addr = %pad, size = %zu\n", &cma_obj->paddr, attach->dmabuf->size); return &cma_obj->base; + +err: + dma_buf_unmap_attachment(attach, sgt, DMA_BIDIRECTIONAL); + return ERR_PTR(ret); } -EXPORT_SYMBOL_GPL(drm_gem_cma_prime_import_sg_table); +EXPORT_SYMBOL_GPL(drm_gem_cma_prime_create_object); /** * drm_gem_cma_vmap - map a CMA GEM object into the kernel's virtual @@ -509,18 +520,17 @@ int drm_gem_cma_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) EXPORT_SYMBOL_GPL(drm_gem_cma_mmap); /** - * drm_gem_cma_prime_import_sg_table_vmap - PRIME import another driver's - * scatter/gather table and get the virtual address of the buffer + * drm_gem_cma_prime_create_object_vmap - produce a CMA GEM object from another + * driver's DMA-BUF attachment and gets the virtual address of the buffer * @dev: DRM device * @attach: DMA-BUF attachment - * @sgt: Scatter/gather table of pinned pages * - * This function imports a scatter/gather table using - * drm_gem_cma_prime_import_sg_table() and uses dma_buf_vmap() to get the kernel + * This function imports a DMA-BUF using + * drm_gem_cma_prime_create_object() and uses dma_buf_vmap() to get the kernel * virtual address. This ensures that a CMA GEM object always has its virtual * address set. This address is released when the object is freed. * - * This function can be used as the &drm_driver.gem_prime_import_sg_table + * This function can be used as the &drm_driver.gem_prime_create_object * callback. The &DRM_GEM_CMA_DRIVER_OPS_VMAP macro provides a shortcut to set * the necessary DRM driver operations. * @@ -529,9 +539,7 @@ EXPORT_SYMBOL_GPL(drm_gem_cma_mmap); * error code on failure. */ struct drm_gem_object * -drm_gem_cma_prime_import_sg_table_vmap(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt) +drm_gem_cma_prime_create_object_vmap(struct drm_device *dev, struct dma_buf_attachment *attach) { struct drm_gem_cma_object *cma_obj; struct drm_gem_object *obj; @@ -544,7 +552,7 @@ drm_gem_cma_prime_import_sg_table_vmap(struct drm_device *dev, return ERR_PTR(ret); } - obj = drm_gem_cma_prime_import_sg_table(dev, attach, sgt); + obj = drm_gem_cma_prime_create_object(dev, attach); if (IS_ERR(obj)) { dma_buf_vunmap(attach->dmabuf, &map); return obj; @@ -555,4 +563,4 @@ drm_gem_cma_prime_import_sg_table_vmap(struct drm_device *dev, return obj; } -EXPORT_SYMBOL(drm_gem_cma_prime_import_sg_table_vmap); +EXPORT_SYMBOL(drm_gem_cma_prime_create_object_vmap); diff --git a/drivers/gpu/drm/pl111/pl111_drv.c b/drivers/gpu/drm/pl111/pl111_drv.c index e4dcaef6c143..3dd6c7e46df0 100644 --- a/drivers/gpu/drm/pl111/pl111_drv.c +++ b/drivers/gpu/drm/pl111/pl111_drv.c @@ -194,9 +194,7 @@ static int pl111_modeset_init(struct drm_device *dev) } static struct drm_gem_object * -pl111_gem_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt) +pl111_gem_create_object(struct drm_device *dev, struct dma_buf_attachment *attach) { struct pl111_drm_dev_private *priv = dev->dev_private; @@ -208,7 +206,7 @@ pl111_gem_import_sg_table(struct drm_device *dev, if (priv->use_device_memory) return ERR_PTR(-EINVAL); - return drm_gem_cma_prime_import_sg_table(dev, attach, sgt); + return drm_gem_cma_prime_create_object(dev, attach); } DEFINE_DRM_GEM_CMA_FOPS(drm_fops); @@ -227,7 +225,7 @@ static const struct drm_driver pl111_drm_driver = { .dumb_create = drm_gem_cma_dumb_create, .prime_handle_to_fd = drm_gem_prime_handle_to_fd, .prime_fd_to_handle = drm_gem_prime_fd_to_handle, - .gem_prime_import_sg_table = pl111_gem_import_sg_table, + .gem_prime_create_object = pl111_gem_create_object, .gem_prime_mmap = drm_gem_prime_mmap, #if defined(CONFIG_DEBUG_FS) diff --git a/include/drm/drm_gem_cma_helper.h b/include/drm/drm_gem_cma_helper.h index 0a9711caa3e8..54d7f4b11225 100644 --- a/include/drm/drm_gem_cma_helper.h +++ b/include/drm/drm_gem_cma_helper.h @@ -95,9 +95,7 @@ void drm_gem_cma_print_info(struct drm_printer *p, unsigned int indent, struct sg_table *drm_gem_cma_get_sg_table(struct drm_gem_object *obj); struct drm_gem_object * -drm_gem_cma_prime_import_sg_table(struct drm_device *dev, - struct dma_buf_attachment *attach, - struct sg_table *sgt); +drm_gem_cma_prime_create_object(struct drm_device *dev, struct dma_buf_attachment *attach); int drm_gem_cma_vmap(struct drm_gem_object *obj, struct dma_buf_map *map); int drm_gem_cma_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); @@ -118,7 +116,7 @@ int drm_gem_cma_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); .dumb_create = (dumb_create_func), \ .prime_handle_to_fd = drm_gem_prime_handle_to_fd, \ .prime_fd_to_handle = drm_gem_prime_fd_to_handle, \ - .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table, \ + .gem_prime_create_object = drm_gem_cma_prime_create_object, \ .gem_prime_mmap = drm_gem_prime_mmap /** @@ -156,7 +154,7 @@ int drm_gem_cma_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); .dumb_create = dumb_create_func, \ .prime_handle_to_fd = drm_gem_prime_handle_to_fd, \ .prime_fd_to_handle = drm_gem_prime_fd_to_handle, \ - .gem_prime_import_sg_table = drm_gem_cma_prime_import_sg_table_vmap, \ + .gem_prime_create_object = drm_gem_cma_prime_create_object_vmap, \ .gem_prime_mmap = drm_gem_prime_mmap /** @@ -178,8 +176,6 @@ int drm_gem_cma_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma); DRM_GEM_CMA_DRIVER_OPS_VMAP_WITH_DUMB_CREATE(drm_gem_cma_dumb_create) struct drm_gem_object * -drm_gem_cma_prime_import_sg_table_vmap(struct drm_device *drm, - struct dma_buf_attachment *attach, - struct sg_table *sgt); +drm_gem_cma_prime_create_object_vmap(struct drm_device *drm, struct dma_buf_attachment *attach); #endif /* __DRM_GEM_CMA_HELPER_H__ */