From patchwork Sun Mar 19 16:08:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 13180447 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 E011CC6FD1F for ; Sun, 19 Mar 2023 16:11:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D4A3910E177; Sun, 19 Mar 2023 16:11:07 +0000 (UTC) Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by gabe.freedesktop.org (Postfix) with ESMTPS id 22BF110E51F for ; Sun, 19 Mar 2023 16:11:04 +0000 (UTC) Received: from workpc.. (109-252-120-116.nat.spd-mgts.ru [109.252.120.116]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: dmitry.osipenko) by madras.collabora.co.uk (Postfix) with ESMTPSA id E9029660308B; Sun, 19 Mar 2023 16:11:01 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1679242262; bh=ZgBbKmol/JViIPucsQ7za1aHczwBQi1vFHDGCImWTbk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YrMFMDC4lbV+TTnZdnKZD8DsZ4YYuZNqcobIeDiOkwwJtcHXSkh+pxOAcjICs/wKH HyQOZ9mBY4XY9mUmQljiyFLH5q7GZpHsS/7UMcJy535bNLySbCMpj+E3VcJ1OTR6Z1 cZX4qXw87eUXD8TcBL9FgfChXi2Rl5jEj2nFggQf63pmodaATi2jfLpPtTTNjSJDU3 1QuIJMvCBo8r5y3M+72ST5v0MxaWptw0/pflPgbCDSLUhqvGr4vyzqSWRKDlZsqO1q hhqQlA/K9g4yqkYL/wBNy7HV3tDrgVe0E8SIEiZveIrpiuHjqt/2lF7Dacl//LCZFa MUBUmWJSUOmuA== From: Dmitry Osipenko To: David Airlie , Gerd Hoffmann , Gurchetan Singh , Chia-I Wu , Daniel Vetter , Rob Clark , =?utf-8?b?TWFyZWsgT2zFocOhaw==?= , Pierre-Eric Pelloux-Prayer Subject: [PATCH v2 2/2] drm/virtio: Support sync objects Date: Sun, 19 Mar 2023 19:08:02 +0300 Message-Id: <20230319160802.3297643-3-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230319160802.3297643-1-dmitry.osipenko@collabora.com> References: <20230319160802.3297643-1-dmitry.osipenko@collabora.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: , Cc: kernel@collabora.com, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, virtualization@lists.linux-foundation.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add sync object DRM UAPI support to VirtIO-GPU driver. It's required for enabling a full-featured Vulkan fencing by Venus and native context VirtIO-GPU Mesa drivers. Signed-off-by: Dmitry Osipenko --- drivers/gpu/drm/virtio/virtgpu_drv.c | 3 +- drivers/gpu/drm/virtio/virtgpu_submit.c | 214 +++++++++++++++++++++++- include/uapi/drm/virtgpu_drm.h | 16 +- 3 files changed, 230 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.c b/drivers/gpu/drm/virtio/virtgpu_drv.c index add075681e18..a22155577152 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.c +++ b/drivers/gpu/drm/virtio/virtgpu_drv.c @@ -176,7 +176,8 @@ static const struct drm_driver driver = { * If KMS is disabled DRIVER_MODESET and DRIVER_ATOMIC are masked * out via drm_device::driver_features: */ - .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_RENDER | DRIVER_ATOMIC, + .driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_RENDER | DRIVER_ATOMIC | + DRIVER_SYNCOBJ | DRIVER_SYNCOBJ_TIMELINE, .open = virtio_gpu_driver_open, .postclose = virtio_gpu_driver_postclose, diff --git a/drivers/gpu/drm/virtio/virtgpu_submit.c b/drivers/gpu/drm/virtio/virtgpu_submit.c index a96f9d3285c7..eb29c4e72dd1 100644 --- a/drivers/gpu/drm/virtio/virtgpu_submit.c +++ b/drivers/gpu/drm/virtio/virtgpu_submit.c @@ -13,11 +13,26 @@ #include #include +#include #include #include "virtgpu_drv.h" +struct virtio_gpu_submit_post_dep { + struct drm_syncobj *syncobj; + struct dma_fence_chain *chain; + uint64_t point; +}; + struct virtio_gpu_submit { + struct virtio_gpu_submit_post_dep *post_deps; + unsigned int num_out_syncobjs; + + struct drm_syncobj **in_syncobjs; + unsigned int num_in_syncobjs; + uint64_t *in_fence_ids; + unsigned int num_in_fence_ids; + struct virtio_gpu_object_array *buflist; struct drm_virtgpu_execbuffer *exbuf; struct virtio_gpu_fence *out_fence; @@ -33,9 +48,10 @@ struct virtio_gpu_submit { static int virtio_gpu_do_fence_wait(struct virtio_gpu_submit *submit, struct dma_fence *dma_fence) { + struct dma_fence *in_fence = dma_fence_chain_contained(dma_fence); uint32_t context = submit->fence_ctx + submit->ring_idx; - if (dma_fence_match_context(dma_fence, context)) + if (dma_fence_match_context(in_fence, context)) return 0; return dma_fence_wait(dma_fence, true); @@ -56,6 +72,186 @@ static int virtio_gpu_dma_fence_wait(struct virtio_gpu_submit *submit, return 0; } +static void virtio_gpu_free_syncobjs(struct drm_syncobj **syncobjs, + uint32_t nr_syncobjs) +{ + uint32_t i = nr_syncobjs; + + while (syncobjs && i--) { + if (syncobjs[i]) + drm_syncobj_put(syncobjs[i]); + } + + kfree(syncobjs); +} + +static int +virtio_gpu_parse_deps(struct virtio_gpu_submit *submit) +{ + struct drm_virtgpu_execbuffer *exbuf = submit->exbuf; + struct drm_virtgpu_execbuffer_syncobj syncobj_desc; + size_t syncobj_stride = exbuf->syncobj_stride; + struct drm_syncobj **syncobjs; + int ret = 0, i; + + if (!submit->num_in_syncobjs) + return 0; + + syncobjs = kcalloc(submit->num_in_syncobjs, sizeof(*syncobjs), + GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); + if (!syncobjs) + return -ENOMEM; + + for (i = 0; i < submit->num_in_syncobjs; i++) { + uint64_t address = exbuf->in_syncobjs + i * syncobj_stride; + struct dma_fence *fence; + + if (copy_from_user(&syncobj_desc, + u64_to_user_ptr(address), + min(syncobj_stride, sizeof(syncobj_desc)))) { + ret = -EFAULT; + break; + } + + if (syncobj_desc.flags & ~VIRTGPU_EXECBUF_SYNCOBJ_FLAGS) { + ret = -EINVAL; + break; + } + + ret = drm_syncobj_find_fence(submit->file, syncobj_desc.handle, + syncobj_desc.point, 0, &fence); + if (ret) + break; + + ret = virtio_gpu_dma_fence_wait(submit, fence); + + dma_fence_put(fence); + if (ret) + break; + + if (syncobj_desc.flags & VIRTGPU_EXECBUF_SYNCOBJ_RESET) { + syncobjs[i] = + drm_syncobj_find(submit->file, syncobj_desc.handle); + if (!syncobjs[i]) { + ret = -EINVAL; + break; + } + } + } + + if (ret) { + virtio_gpu_free_syncobjs(syncobjs, i); + return ret; + } + + submit->in_syncobjs = syncobjs; + + return ret; +} + +static void virtio_gpu_reset_syncobjs(struct drm_syncobj **syncobjs, + uint32_t nr_syncobjs) +{ + uint32_t i; + + for (i = 0; syncobjs && i < nr_syncobjs; i++) { + if (syncobjs[i]) + drm_syncobj_replace_fence(syncobjs[i], NULL); + } +} + +static void +virtio_gpu_free_post_deps(struct virtio_gpu_submit_post_dep *post_deps, + uint32_t nr_syncobjs) +{ + uint32_t i = nr_syncobjs; + + while (post_deps && i--) { + kfree(post_deps[i].chain); + drm_syncobj_put(post_deps[i].syncobj); + } + + kfree(post_deps); +} + +static int virtio_gpu_parse_post_deps(struct virtio_gpu_submit *submit) +{ + struct drm_virtgpu_execbuffer *exbuf = submit->exbuf; + struct drm_virtgpu_execbuffer_syncobj syncobj_desc; + struct virtio_gpu_submit_post_dep *post_deps; + size_t syncobj_stride = exbuf->syncobj_stride; + int ret = 0, i; + + if (!submit->num_out_syncobjs) + return 0; + + post_deps = kcalloc(submit->num_out_syncobjs, sizeof(*post_deps), + GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY); + if (!post_deps) + return -ENOMEM; + + for (i = 0; i < submit->num_out_syncobjs; i++) { + uint64_t address = exbuf->out_syncobjs + i * syncobj_stride; + + if (copy_from_user(&syncobj_desc, + u64_to_user_ptr(address), + min(syncobj_stride, sizeof(syncobj_desc)))) { + ret = -EFAULT; + break; + } + + post_deps[i].point = syncobj_desc.point; + + if (syncobj_desc.flags) { + ret = -EINVAL; + break; + } + + if (syncobj_desc.point) { + post_deps[i].chain = dma_fence_chain_alloc(); + if (!post_deps[i].chain) { + ret = -ENOMEM; + break; + } + } + + post_deps[i].syncobj = + drm_syncobj_find(submit->file, syncobj_desc.handle); + if (!post_deps[i].syncobj) { + ret = -EINVAL; + break; + } + } + + if (ret) { + virtio_gpu_free_post_deps(post_deps, i); + return ret; + } + + submit->post_deps = post_deps; + + return 0; +} + +static void +virtio_gpu_process_post_deps(struct virtio_gpu_submit *submit) +{ + struct virtio_gpu_submit_post_dep *post_deps = submit->post_deps; + struct dma_fence *fence = &submit->out_fence->f; + uint32_t i; + + for (i = 0; post_deps && i < submit->num_out_syncobjs; i++) { + if (post_deps[i].chain) { + drm_syncobj_add_point(post_deps[i].syncobj, + post_deps[i].chain, + fence, post_deps[i].point); + post_deps[i].chain = NULL; + } else { + drm_syncobj_replace_fence(post_deps[i].syncobj, fence); + } + } +} + static int virtio_gpu_fence_event_create(struct drm_device *dev, struct drm_file *file, struct virtio_gpu_fence *fence, @@ -119,6 +315,11 @@ static int virtio_gpu_init_submit_buflist(struct virtio_gpu_submit *submit) static void virtio_gpu_cleanup_submit(struct virtio_gpu_submit *submit) { + virtio_gpu_reset_syncobjs(submit->in_syncobjs, submit->num_in_syncobjs); + virtio_gpu_free_syncobjs(submit->in_syncobjs, submit->num_in_syncobjs); + virtio_gpu_free_post_deps(submit->post_deps, submit->num_out_syncobjs); + kfree(submit->in_fence_ids); + if (!IS_ERR(submit->buf)) kvfree(submit->buf); @@ -164,6 +365,8 @@ static int virtio_gpu_init_submit(struct virtio_gpu_submit *submit, return err; } + submit->num_out_syncobjs = exbuf->num_out_syncobjs; + submit->num_in_syncobjs = exbuf->num_in_syncobjs; submit->out_fence = out_fence; submit->fence_ctx = fence_ctx; submit->ring_idx = ring_idx; @@ -282,6 +485,14 @@ int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data, if (ret) goto cleanup; + ret = virtio_gpu_parse_deps(&submit); + if (ret) + goto cleanup; + + ret = virtio_gpu_parse_post_deps(&submit); + if (ret) + goto cleanup; + ret = virtio_gpu_install_out_fence_fd(&submit); if (ret) goto cleanup; @@ -291,6 +502,7 @@ int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data, goto cleanup; virtio_gpu_submit(&submit); + virtio_gpu_process_post_deps(&submit); cleanup: virtio_gpu_cleanup_submit(&submit); diff --git a/include/uapi/drm/virtgpu_drm.h b/include/uapi/drm/virtgpu_drm.h index 7b158fcb02b4..ce4948aacafd 100644 --- a/include/uapi/drm/virtgpu_drm.h +++ b/include/uapi/drm/virtgpu_drm.h @@ -64,6 +64,16 @@ struct drm_virtgpu_map { __u32 pad; }; +#define VIRTGPU_EXECBUF_SYNCOBJ_RESET 0x01 +#define VIRTGPU_EXECBUF_SYNCOBJ_FLAGS ( \ + VIRTGPU_EXECBUF_SYNCOBJ_RESET | \ + 0) +struct drm_virtgpu_execbuffer_syncobj { + __u32 handle; + __u32 flags; + __u64 point; +}; + /* fence_fd is modified on success if VIRTGPU_EXECBUF_FENCE_FD_OUT flag is set. */ struct drm_virtgpu_execbuffer { __u32 flags; @@ -73,7 +83,11 @@ struct drm_virtgpu_execbuffer { __u32 num_bo_handles; __s32 fence_fd; /* in/out fence fd (see VIRTGPU_EXECBUF_FENCE_FD_IN/OUT) */ __u32 ring_idx; /* command ring index (see VIRTGPU_EXECBUF_RING_IDX) */ - __u32 pad; + __u32 syncobj_stride; + __u32 num_in_syncobjs; + __u32 num_out_syncobjs; + __u64 in_syncobjs; + __u64 out_syncobjs; }; #define VIRTGPU_PARAM_3D_FEATURES 1 /* do we have 3D features in the hw */