From patchwork Sat Nov 5 23:27:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 13033297 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 0BE0FC4332F for ; Sat, 5 Nov 2022 23:29:38 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id A74F210E18A; Sat, 5 Nov 2022 23:29:33 +0000 (UTC) Received: from madras.collabora.co.uk (madras.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e5ab]) by gabe.freedesktop.org (Postfix) with ESMTPS id B12B810E180 for ; Sat, 5 Nov 2022 23:29:15 +0000 (UTC) Received: from dimapc.. (109-252-117-140.nat.spd-mgts.ru [109.252.117.140]) (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 9D3E366029A3; Sat, 5 Nov 2022 23:29:12 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1667690954; bh=Ssfdh0tTuHTovrS3So2cI1cXoHQs0Y5a+T7gT09uKls=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=h9p3bt4blYUU4Ie3QHfkZLQCDWYE3uVr6qJ9vA/xFvsyA/mgKAQu5Jmsu7uxb3tcd e8LWLTPGDJ/2go28MPZpDBuPHMl+KAlOS6fYzWHX7pXZX1MzCPtBTZadJn3I3TbIky eFRH1kXXS6pzBT+tTK/Cl5P6f9CBrIT55ji9rcxVtdG/3pUJfYloDot4aNgvr5oTpD PXZrOOT0h0KseB3Hhwd7owfZoazxU35DpXfSPAIJ8v6Iy+Tobbg67y8m8xMqaaKnNT jK+zSy/F59vjncRfNOqI+bDkgenW1IE6uS09xlPatXNTc0oXN1e35YfJN35bwPFZR1 oAFWyhPkNj6rg== From: Dmitry Osipenko To: David Airlie , Gerd Hoffmann , Gurchetan Singh , Chia-I Wu , Daniel Vetter , Daniel Almeida , Gustavo Padovan , Daniel Stone , Tomeu Vizoso , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Clark , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= , Qiang Yu , Steven Price , Alyssa Rosenzweig , Rob Herring , Sean Paul , Dmitry Baryshkov , Abhinav Kumar Subject: [PATCH v8 6/7] drm/virtio: Support memory shrinking Date: Sun, 6 Nov 2022 02:27:18 +0300 Message-Id: <20221105232719.302619-7-dmitry.osipenko@collabora.com> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20221105232719.302619-1-dmitry.osipenko@collabora.com> References: <20221105232719.302619-1-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: Dmitry Osipenko , 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" Support generic drm-shmem memory shrinker and add new madvise IOCTL to the VirtIO-GPU driver. BO cache manager of Mesa driver will mark BOs as "don't need" using the new IOCTL to let shrinker purge the marked BOs on OOM, the shrinker will also evict unpurgeable shmem BOs from memory if guest supports SWAP file or partition. Signed-off-by: Daniel Almeida Signed-off-by: Dmitry Osipenko --- drivers/gpu/drm/virtio/virtgpu_drv.h | 18 +++- drivers/gpu/drm/virtio/virtgpu_gem.c | 55 ++++++++++ drivers/gpu/drm/virtio/virtgpu_ioctl.c | 37 +++++++ drivers/gpu/drm/virtio/virtgpu_kms.c | 9 ++ drivers/gpu/drm/virtio/virtgpu_object.c | 138 +++++++++++++++++++----- drivers/gpu/drm/virtio/virtgpu_plane.c | 22 +++- drivers/gpu/drm/virtio/virtgpu_vq.c | 40 +++++++ include/uapi/drm/virtgpu_drm.h | 14 +++ 8 files changed, 303 insertions(+), 30 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h index 9b98470593b0..fab6aaec02ce 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.h +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h @@ -90,6 +90,7 @@ struct virtio_gpu_object { uint32_t hw_res_handle; bool dumb; bool created; + bool detached; bool host3d_blob, guest_blob; uint32_t blob_mem, blob_flags; @@ -275,7 +276,7 @@ struct virtio_gpu_fpriv { }; /* virtgpu_ioctl.c */ -#define DRM_VIRTIO_NUM_IOCTLS 12 +#define DRM_VIRTIO_NUM_IOCTLS 13 extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS]; void virtio_gpu_create_context(struct drm_device *dev, struct drm_file *file); @@ -311,6 +312,10 @@ void virtio_gpu_array_put_free(struct virtio_gpu_object_array *objs); void virtio_gpu_array_put_free_delayed(struct virtio_gpu_device *vgdev, struct virtio_gpu_object_array *objs); void virtio_gpu_array_put_free_work(struct work_struct *work); +int virtio_gpu_array_prepare(struct virtio_gpu_device *vgdev, + struct virtio_gpu_object_array *objs); +int virtio_gpu_gem_host_mem_release(struct virtio_gpu_object *bo); +int virtio_gpu_gem_madvise(struct virtio_gpu_object *obj, int madv); /* virtgpu_vq.c */ int virtio_gpu_alloc_vbufs(struct virtio_gpu_device *vgdev); @@ -322,6 +327,8 @@ void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev, struct virtio_gpu_fence *fence); void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev, struct virtio_gpu_object *bo); +int virtio_gpu_cmd_release_resource(struct virtio_gpu_device *vgdev, + struct virtio_gpu_object *bo); void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev, uint64_t offset, uint32_t width, uint32_t height, @@ -342,6 +349,9 @@ void virtio_gpu_object_attach(struct virtio_gpu_device *vgdev, struct virtio_gpu_object *obj, struct virtio_gpu_mem_entry *ents, unsigned int nents); +void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev, + struct virtio_gpu_object *obj, + struct virtio_gpu_fence *fence); int virtio_gpu_attach_status_page(struct virtio_gpu_device *vgdev); int virtio_gpu_detach_status_page(struct virtio_gpu_device *vgdev); void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev, @@ -454,6 +464,8 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo); +int virtio_gpu_reattach_shmem_object(struct virtio_gpu_object *bo); + int virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev, uint32_t *resid); /* virtgpu_prime.c */ @@ -484,4 +496,8 @@ void virtio_gpu_vram_unmap_dma_buf(struct device *dev, struct sg_table *sgt, enum dma_data_direction dir); +/* virtgpu_gem_shrinker.c */ +int virtio_gpu_gem_shrinker_init(struct virtio_gpu_device *vgdev); +void virtio_gpu_gem_shrinker_fini(struct virtio_gpu_device *vgdev); + #endif diff --git a/drivers/gpu/drm/virtio/virtgpu_gem.c b/drivers/gpu/drm/virtio/virtgpu_gem.c index 7db48d17ee3a..6c5d98e0f071 100644 --- a/drivers/gpu/drm/virtio/virtgpu_gem.c +++ b/drivers/gpu/drm/virtio/virtgpu_gem.c @@ -294,3 +294,58 @@ void virtio_gpu_array_put_free_work(struct work_struct *work) } spin_unlock(&vgdev->obj_free_lock); } + +int virtio_gpu_array_prepare(struct virtio_gpu_device *vgdev, + struct virtio_gpu_object_array *objs) +{ + struct virtio_gpu_object *bo; + int ret = 0; + u32 i; + + for (i = 0; i < objs->nents; i++) { + bo = gem_to_virtio_gpu_obj(objs->objs[i]); + + if (virtio_gpu_is_shmem(bo) && bo->detached) { + ret = virtio_gpu_reattach_shmem_object(bo); + if (ret) + break; + } + } + + return ret; +} + +int virtio_gpu_gem_madvise(struct virtio_gpu_object *bo, int madv) +{ + int ret; + + /* + * For now we support only purging BOs that are backed by guest's + * memory. + */ + if (!virtio_gpu_is_shmem(bo)) + return true; + + dma_resv_lock(bo->base.base.resv, NULL); + ret = drm_gem_shmem_madvise(&bo->base, madv); + dma_resv_unlock(bo->base.base.resv); + + return ret; +} + +int virtio_gpu_gem_host_mem_release(struct virtio_gpu_object *bo) +{ + struct virtio_gpu_device *vgdev = bo->base.base.dev->dev_private; + int err; + + if (bo->created) { + err = virtio_gpu_cmd_release_resource(vgdev, bo); + if (err) + return err; + + virtio_gpu_notify(vgdev); + bo->created = false; + } + + return 0; +} diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c index 5d05093014ac..550c3c8f53f6 100644 --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c @@ -217,6 +217,10 @@ static int virtio_gpu_execbuffer_ioctl(struct drm_device *dev, void *data, ret = virtio_gpu_array_lock_resv(buflist); if (ret) goto out_memdup; + + ret = virtio_gpu_array_prepare(vgdev, buflist); + if (ret) + goto out_unresv; } out_fence = virtio_gpu_fence_alloc(vgdev, fence_ctx, ring_idx); @@ -423,6 +427,10 @@ static int virtio_gpu_transfer_from_host_ioctl(struct drm_device *dev, if (ret != 0) goto err_put_free; + ret = virtio_gpu_array_prepare(vgdev, objs); + if (ret) + goto err_unlock; + fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0); if (!fence) { ret = -ENOMEM; @@ -482,6 +490,10 @@ static int virtio_gpu_transfer_to_host_ioctl(struct drm_device *dev, void *data, if (ret != 0) goto err_put_free; + ret = virtio_gpu_array_prepare(vgdev, objs); + if (ret) + goto err_unlock; + ret = -ENOMEM; fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0); @@ -838,6 +850,28 @@ static int virtio_gpu_context_init_ioctl(struct drm_device *dev, return ret; } +static int virtio_gpu_madvise_ioctl(struct drm_device *dev, + void *data, + struct drm_file *file) +{ + struct drm_virtgpu_madvise *args = data; + struct virtio_gpu_object *bo; + struct drm_gem_object *obj; + + if (args->madv > VIRTGPU_MADV_DONTNEED) + return -EOPNOTSUPP; + + obj = drm_gem_object_lookup(file, args->bo_handle); + if (!obj) + return -ENOENT; + + bo = gem_to_virtio_gpu_obj(obj); + args->retained = virtio_gpu_gem_madvise(bo, args->madv); + drm_gem_object_put(obj); + + return 0; +} + struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS] = { DRM_IOCTL_DEF_DRV(VIRTGPU_MAP, virtio_gpu_map_ioctl, DRM_RENDER_ALLOW), @@ -877,4 +911,7 @@ struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS] = { DRM_IOCTL_DEF_DRV(VIRTGPU_CONTEXT_INIT, virtio_gpu_context_init_ioctl, DRM_RENDER_ALLOW), + + DRM_IOCTL_DEF_DRV(VIRTGPU_MADVISE, virtio_gpu_madvise_ioctl, + DRM_RENDER_ALLOW), }; diff --git a/drivers/gpu/drm/virtio/virtgpu_kms.c b/drivers/gpu/drm/virtio/virtgpu_kms.c index 27b7f14dae89..9c06486c046a 100644 --- a/drivers/gpu/drm/virtio/virtgpu_kms.c +++ b/drivers/gpu/drm/virtio/virtgpu_kms.c @@ -240,6 +240,12 @@ int virtio_gpu_init(struct virtio_device *vdev, struct drm_device *dev) goto err_scanouts; } + ret = drm_gem_shmem_shrinker_register(dev, "virtio-gpu-shrinker"); + if (ret) { + DRM_ERROR("shrinker init failed\n"); + goto err_modeset; + } + virtio_device_ready(vgdev->vdev); if (num_capsets) @@ -252,6 +258,8 @@ int virtio_gpu_init(struct virtio_device *vdev, struct drm_device *dev) 5 * HZ); return 0; +err_modeset: + virtio_gpu_modeset_fini(vgdev); err_scanouts: virtio_gpu_free_vbufs(vgdev); err_vbufs: @@ -290,6 +298,7 @@ void virtio_gpu_release(struct drm_device *dev) if (!vgdev) return; + drm_gem_shmem_shrinker_unregister(dev); virtio_gpu_modeset_fini(vgdev); virtio_gpu_free_vbufs(vgdev); virtio_gpu_cleanup_cap_cache(vgdev); diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c index 8d7728181de0..ddae4f9402f7 100644 --- a/drivers/gpu/drm/virtio/virtgpu_object.c +++ b/drivers/gpu/drm/virtio/virtgpu_object.c @@ -97,39 +97,54 @@ static void virtio_gpu_free_object(struct drm_gem_object *obj) virtio_gpu_cleanup_object(bo); } -static const struct drm_gem_object_funcs virtio_gpu_shmem_funcs = { - .free = virtio_gpu_free_object, - .open = virtio_gpu_gem_object_open, - .close = virtio_gpu_gem_object_close, - .print_info = drm_gem_shmem_object_print_info, - .export = virtgpu_gem_prime_export, - .pin = drm_gem_shmem_object_pin, - .unpin = drm_gem_shmem_object_unpin, - .get_sg_table = drm_gem_shmem_object_get_sg_table, - .vmap = drm_gem_shmem_object_vmap, - .vunmap = drm_gem_shmem_object_vunmap, - .mmap = drm_gem_shmem_object_mmap, - .vm_ops = &drm_gem_shmem_vm_ops, -}; - -bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo) +static int virtio_gpu_detach_object_fenced(struct virtio_gpu_object *bo) { - return bo->base.base.funcs == &virtio_gpu_shmem_funcs; + struct virtio_gpu_device *vgdev = bo->base.base.dev->dev_private; + struct virtio_gpu_fence *fence; + + fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0); + if (!fence) + return -ENOMEM; + + virtio_gpu_object_detach(vgdev, bo, fence); + virtio_gpu_notify(vgdev); + + dma_fence_wait(&fence->f, false); + dma_fence_put(&fence->f); + + bo->detached = true; + + return 0; } -struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev, - size_t size) +static int virtio_gpu_shmem_evict(struct drm_gem_shmem_object *shmem) { - struct virtio_gpu_object_shmem *shmem; - struct drm_gem_shmem_object *dshmem; + struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(&shmem->base); + int err; + + /* + * At first tell host to stop using guest's memory to ensure that + * host won't touch the released guest's memory once it's gone. + */ + if (!shmem->evicted) { + err = virtio_gpu_detach_object_fenced(bo); + if (err) + return err; + } - shmem = kzalloc(sizeof(*shmem), GFP_KERNEL); - if (!shmem) - return ERR_PTR(-ENOMEM); + if (drm_gem_shmem_is_purgeable(shmem)) { + err = virtio_gpu_gem_host_mem_release(bo); + if (err) { + virtio_gpu_reattach_shmem_object(bo); + return err; + } - dshmem = &shmem->base.base; - dshmem->base.funcs = &virtio_gpu_shmem_funcs; - return &dshmem->base; + drm_gem_shmem_purge(shmem); + } else { + drm_gem_shmem_evict(shmem); + } + + return 0; } static int virtio_gpu_object_shmem_init(struct virtio_gpu_device *vgdev, @@ -176,6 +191,64 @@ static int virtio_gpu_object_shmem_init(struct virtio_gpu_device *vgdev, return 0; } +int virtio_gpu_reattach_shmem_object(struct virtio_gpu_object *bo) +{ + struct virtio_gpu_device *vgdev = bo->base.base.dev->dev_private; + struct virtio_gpu_mem_entry *ents; + unsigned int nents; + int err; + + err = drm_gem_shmem_swap_in(&bo->base); + if (err) + return err; + + err = virtio_gpu_object_shmem_init(vgdev, bo, &ents, &nents); + if (err) + return err; + + virtio_gpu_object_attach(vgdev, bo, ents, nents); + virtio_gpu_notify(vgdev); + + bo->detached = false; + + return 0; +} + +static const struct drm_gem_object_funcs virtio_gpu_shmem_funcs = { + .free = virtio_gpu_free_object, + .open = virtio_gpu_gem_object_open, + .close = virtio_gpu_gem_object_close, + .print_info = drm_gem_shmem_object_print_info, + .export = virtgpu_gem_prime_export, + .pin = drm_gem_shmem_object_pin, + .unpin = drm_gem_shmem_object_unpin, + .get_sg_table = drm_gem_shmem_object_get_sg_table, + .vmap = drm_gem_shmem_object_vmap, + .vunmap = drm_gem_shmem_object_vunmap, + .mmap = drm_gem_shmem_object_mmap, + .vm_ops = &drm_gem_shmem_vm_ops, +}; + +bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo) +{ + return bo->base.base.funcs == &virtio_gpu_shmem_funcs; +} + +struct drm_gem_object *virtio_gpu_create_object(struct drm_device *dev, + size_t size) +{ + struct virtio_gpu_object_shmem *shmem; + struct drm_gem_shmem_object *dshmem; + + shmem = kzalloc(sizeof(*shmem), GFP_KERNEL); + if (!shmem) + return ERR_PTR(-ENOMEM); + + dshmem = &shmem->base.base; + dshmem->base.funcs = &virtio_gpu_shmem_funcs; + return &dshmem->base; +} + int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, struct virtio_gpu_object_params *params, struct virtio_gpu_object **bo_ptr, @@ -201,6 +274,7 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, goto err_free_gem; bo->dumb = params->dumb; + bo->base.evict = virtio_gpu_shmem_evict; ret = virtio_gpu_object_shmem_init(vgdev, bo, &ents, &nents); if (ret != 0) @@ -228,10 +302,20 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, virtio_gpu_cmd_resource_create_3d(vgdev, bo, params, objs, fence); virtio_gpu_object_attach(vgdev, bo, ents, nents); + + shmem_obj->pages_mark_dirty_on_put = 1; + + drm_gem_shmem_set_evictable(shmem_obj); + drm_gem_shmem_set_purgeable(shmem_obj); } else { virtio_gpu_cmd_create_resource(vgdev, bo, params, objs, fence); virtio_gpu_object_attach(vgdev, bo, ents, nents); + + shmem_obj->pages_mark_dirty_on_put = 1; + + drm_gem_shmem_set_evictable(shmem_obj); + drm_gem_shmem_set_purgeable(shmem_obj); } *bo_ptr = bo; diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c index 4c09e313bebc..2b99dea26e5c 100644 --- a/drivers/gpu/drm/virtio/virtgpu_plane.c +++ b/drivers/gpu/drm/virtio/virtgpu_plane.c @@ -238,20 +238,32 @@ static int virtio_gpu_plane_prepare_fb(struct drm_plane *plane, struct virtio_gpu_device *vgdev = dev->dev_private; struct virtio_gpu_framebuffer *vgfb; struct virtio_gpu_object *bo; + int err; if (!new_state->fb) return 0; vgfb = to_virtio_gpu_framebuffer(new_state->fb); bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]); - if (!bo || (plane->type == DRM_PLANE_TYPE_PRIMARY && !bo->guest_blob)) + + if (virtio_gpu_is_shmem(bo)) { + err = drm_gem_pin_unlocked(&bo->base.base); + if (err) + return err; + } + + if (plane->type == DRM_PLANE_TYPE_PRIMARY && !bo->guest_blob) return 0; if (bo->dumb && (plane->state->fb != new_state->fb)) { vgfb->fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0); - if (!vgfb->fence) + if (!vgfb->fence) { + if (virtio_gpu_is_shmem(bo)) + drm_gem_unpin_unlocked(&bo->base.base); + return -ENOMEM; + } } return 0; @@ -261,15 +273,21 @@ static void virtio_gpu_plane_cleanup_fb(struct drm_plane *plane, struct drm_plane_state *state) { struct virtio_gpu_framebuffer *vgfb; + struct virtio_gpu_object *bo; if (!state->fb) return; vgfb = to_virtio_gpu_framebuffer(state->fb); + bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]); + if (vgfb->fence) { dma_fence_put(&vgfb->fence->f); vgfb->fence = NULL; } + + if (virtio_gpu_is_shmem(bo)) + drm_gem_unpin_unlocked(&bo->base.base); } static void virtio_gpu_cursor_plane_update(struct drm_plane *plane, diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c index 9ff8660b50ad..d3ff7b63f8e4 100644 --- a/drivers/gpu/drm/virtio/virtgpu_vq.c +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c @@ -538,6 +538,21 @@ void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev, virtio_gpu_cleanup_object(bo); } +int virtio_gpu_cmd_release_resource(struct virtio_gpu_device *vgdev, + struct virtio_gpu_object *bo) +{ + struct virtio_gpu_resource_unref *cmd_p; + struct virtio_gpu_vbuffer *vbuf; + + cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); + memset(cmd_p, 0, sizeof(*cmd_p)); + + cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_UNREF); + cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); + + return virtio_gpu_queue_ctrl_buffer(vgdev, vbuf); +} + void virtio_gpu_cmd_set_scanout(struct virtio_gpu_device *vgdev, uint32_t scanout_id, uint32_t resource_id, uint32_t width, uint32_t height, @@ -638,6 +653,23 @@ virtio_gpu_cmd_resource_attach_backing(struct virtio_gpu_device *vgdev, virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); } +static void +virtio_gpu_cmd_resource_detach_backing(struct virtio_gpu_device *vgdev, + u32 resource_id, + struct virtio_gpu_fence *fence) +{ + struct virtio_gpu_resource_attach_backing *cmd_p; + struct virtio_gpu_vbuffer *vbuf; + + cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p)); + memset(cmd_p, 0, sizeof(*cmd_p)); + + cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_RESOURCE_DETACH_BACKING); + cmd_p->resource_id = cpu_to_le32(resource_id); + + virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, fence); +} + static void virtio_gpu_cmd_get_display_info_cb(struct virtio_gpu_device *vgdev, struct virtio_gpu_vbuffer *vbuf) { @@ -1101,6 +1133,14 @@ void virtio_gpu_object_attach(struct virtio_gpu_device *vgdev, ents, nents, NULL); } +void virtio_gpu_object_detach(struct virtio_gpu_device *vgdev, + struct virtio_gpu_object *obj, + struct virtio_gpu_fence *fence) +{ + virtio_gpu_cmd_resource_detach_backing(vgdev, obj->hw_res_handle, + fence); +} + void virtio_gpu_cursor_ping(struct virtio_gpu_device *vgdev, struct virtio_gpu_output *output) { diff --git a/include/uapi/drm/virtgpu_drm.h b/include/uapi/drm/virtgpu_drm.h index 0512fde5e697..12197d8e9759 100644 --- a/include/uapi/drm/virtgpu_drm.h +++ b/include/uapi/drm/virtgpu_drm.h @@ -48,6 +48,7 @@ extern "C" { #define DRM_VIRTGPU_GET_CAPS 0x09 #define DRM_VIRTGPU_RESOURCE_CREATE_BLOB 0x0a #define DRM_VIRTGPU_CONTEXT_INIT 0x0b +#define DRM_VIRTGPU_MADVISE 0x0c #define VIRTGPU_EXECBUF_FENCE_FD_IN 0x01 #define VIRTGPU_EXECBUF_FENCE_FD_OUT 0x02 @@ -196,6 +197,15 @@ struct drm_virtgpu_context_init { __u64 ctx_set_params; }; +#define VIRTGPU_MADV_WILLNEED 0 +#define VIRTGPU_MADV_DONTNEED 1 +struct drm_virtgpu_madvise { + __u32 bo_handle; + __u32 retained; /* out, non-zero if BO can be used */ + __u32 madv; + __u32 pad; +}; + /* * Event code that's given when VIRTGPU_CONTEXT_PARAM_POLL_RINGS_MASK is in * effect. The event size is sizeof(drm_event), since there is no additional @@ -246,6 +256,10 @@ struct drm_virtgpu_context_init { DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_CONTEXT_INIT, \ struct drm_virtgpu_context_init) +#define DRM_IOCTL_VIRTGPU_MADVISE \ + DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_MADVISE, \ + struct drm_virtgpu_madvise) + #if defined(__cplusplus) } #endif