/* * Copyright (C) 2015 Red Hat, Inc. * All Rights Reserved. * * Authors: * Dave Airlie * Alon Levy * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ #include <linux/file.h>#include <linux/sync_file.h>#include <linux/uaccess.h> #include <drm/drm_file.h>#include <drm/virtgpu_drm.h> #include "virtgpu_drv.h" #define VIRTGPU_BLOB_FLAG_USE_MASK (VIRTGPU_BLOB_FLAG_USE_MAPPABLE | \ VIRTGPU_BLOB_FLAG_USE_SHAREABLE | \ VIRTGPU_BLOB_FLAG_USE_CROSS_DEVICE) /* Must be called with &virtio_gpu_fpriv.struct_mutex held. */static void virtio_gpu_create_context_locked(struct virtio_gpu_device *vgdev, struct virtio_gpu_fpriv *vfpriv){ if (vfpriv->explicit_debug_name) { virtio_gpu_cmd_context_create(vgdev, vfpriv->ctx_id, vfpriv->context_init, strlen(vfpriv->debug_name), vfpriv->debug_name); } else { char dbgname[TASK_COMM_LEN]; get_task_comm(dbgname, current); virtio_gpu_cmd_context_create(vgdev, vfpriv->ctx_id, vfpriv->context_init, strlen(dbgname), dbgname); } vfpriv->context_created = true;} void virtio_gpu_create_context(struct drm_device *dev, struct drm_file *file){ struct virtio_gpu_device *vgdev = dev->dev_private; struct virtio_gpu_fpriv *vfpriv = file->driver_priv; mutex_lock(&vfpriv->context_lock); if (vfpriv->context_created) goto out_unlock; virtio_gpu_create_context_locked(vgdev, vfpriv); out_unlock: mutex_unlock(&vfpriv->context_lock);} static int virtio_gpu_map_ioctl(struct drm_device *dev, void *data, struct drm_file *file){ struct virtio_gpu_device *vgdev = dev->dev_private; struct drm_virtgpu_map *virtio_gpu_map = data; return drm_gem_dumb_map_offset(file, vgdev->ddev, virtio_gpu_map->handle, &virtio_gpu_map->offset);} static int virtio_gpu_getparam_ioctl(struct drm_device *dev, void *data, struct drm_file *file){ struct virtio_gpu_device *vgdev = dev->dev_private; struct drm_virtgpu_getparam *param = data; int value; switch (param->param) { case VIRTGPU_PARAM_3D_FEATURES: value = vgdev->has_virgl_3d ? 1 : 0; break; case VIRTGPU_PARAM_CAPSET_QUERY_FIX: value = 1; break; case VIRTGPU_PARAM_RESOURCE_BLOB: value = vgdev->has_resource_blob ? 1 : 0; break; case VIRTGPU_PARAM_HOST_VISIBLE: value = vgdev->has_host_visible ? 1 : 0; break; case VIRTGPU_PARAM_CROSS_DEVICE: value = vgdev->has_resource_assign_uuid ? 1 : 0; break; case VIRTGPU_PARAM_CONTEXT_INIT: value = vgdev->has_context_init ? 1 : 0; break; case VIRTGPU_PARAM_SUPPORTED_CAPSET_IDs: value = vgdev->capset_id_mask; break; case VIRTGPU_PARAM_EXPLICIT_DEBUG_NAME: value = vgdev->has_context_init ? 1 : 0; break; case VIRTGPU_PARAM_BLOB_ALIGNMENT: if (!vgdev->has_blob_alignment) return -ENOENT; value = vgdev->blob_alignment; break; default: return -EINVAL; } if (copy_to_user(u64_to_user_ptr(param->value), &value, sizeof(int))) return -EFAULT; return 0;} static int virtio_gpu_resource_create_ioctl(struct drm_device *dev, void *data, struct drm_file *file){ struct virtio_gpu_device *vgdev = dev->dev_private; struct drm_virtgpu_resource_create *rc = data; struct virtio_gpu_fence *fence; int ret; struct virtio_gpu_object *qobj; struct drm_gem_object *obj; uint32_t handle = 0; struct virtio_gpu_object_params params = { 0 }; if (vgdev->has_virgl_3d) { virtio_gpu_create_context(dev, file); params.virgl = true; params.target = rc->target; params.bind = rc->bind; params.depth = rc->depth; params.array_size = rc->array_size; params.last_level = rc->last_level; params.nr_samples = rc->nr_samples; params.flags = rc->flags; } else { if (rc->depth > 1) return -EINVAL; if (rc->nr_samples > 1) return -EINVAL; if (rc->last_level > 1) return -EINVAL; if (rc->target != 2) return -EINVAL; if (rc->array_size > 1) return -EINVAL; } params.format = rc->format; params.width = rc->width; params.height = rc->height; params.size = rc->size; /* allocate a single page size object */ if (params.size == 0) params.size = PAGE_SIZE; fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0); if (!fence) return -ENOMEM; ret = virtio_gpu_object_create(vgdev, ¶ms, &qobj, fence); dma_fence_put(&fence->f); if (ret < 0) return ret; obj = &qobj->base.base; ret = drm_gem_handle_create(file, obj, &handle); if (ret) { drm_gem_object_release(obj); return ret; } rc->res_handle = qobj->hw_res_handle; /* similiar to a VM address */ rc->bo_handle = handle; /* * The handle owns the reference now. But we must drop our * remaining reference *after* we no longer need to dereference * the obj. Otherwise userspace could guess the handle and * race closing it from another thread. */ drm_gem_object_put(obj); return 0;} static int virtio_gpu_resource_info_ioctl(struct drm_device *dev, void *data, struct drm_file *file){ struct drm_virtgpu_resource_info *ri = data; struct drm_gem_object *gobj = NULL; struct virtio_gpu_object *qobj = NULL; gobj = drm_gem_object_lookup(file, ri->bo_handle); if (gobj == NULL) return -ENOENT; qobj = gem_to_virtio_gpu_obj(gobj); ri->size = qobj->base.base.size; ri->res_handle = qobj->hw_res_handle; if (qobj->host3d_blob || qobj->guest_blob) ri->blob_mem = qobj->blob_mem; drm_gem_object_put(gobj); return 0;} static int virtio_gpu_transfer_from_host_ioctl(struct drm_device *dev, void *data, struct drm_file *file){ struct virtio_gpu_device *vgdev = dev->dev_private; struct virtio_gpu_fpriv *vfpriv = file->driver_priv; struct drm_virtgpu_3d_transfer_from_host *args = data; struct virtio_gpu_object *bo; struct virtio_gpu_object_array *objs; struct virtio_gpu_fence *fence; int ret; u32 offset = args->offset; if (vgdev->has_virgl_3d == false) return -ENOSYS; virtio_gpu_create_context(dev, file); objs = virtio_gpu_array_from_handles(file, &args->bo_handle, 1); if (objs == NULL) return -ENOENT; bo = gem_to_virtio_gpu_obj(objs->objs[0]); if (bo->guest_blob && !bo->host3d_blob) { ret = -EINVAL; goto err_put_free; } if (!bo->host3d_blob && (args->stride || args->layer_stride)) { ret = -EINVAL; goto err_put_free; } ret = virtio_gpu_array_lock_resv(objs); if (ret != 0) goto err_put_free; fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0); if (!fence) { ret = -ENOMEM; goto err_unlock; } virtio_gpu_cmd_transfer_from_host_3d (vgdev, vfpriv->ctx_id, offset, args->level, args->stride, args->layer_stride, &args->box, objs, fence); dma_fence_put(&fence->f); virtio_gpu_notify(vgdev); return 0; err_unlock: virtio_gpu_array_unlock_resv(objs);err_put_free: virtio_gpu_array_put_free(objs); return ret;} static int virtio_gpu_transfer_to_host_ioctl(struct drm_device *dev, void *data, struct drm_file *file){ struct virtio_gpu_device *vgdev = dev->dev_private; struct virtio_gpu_fpriv *vfpriv = file->driver_priv; struct drm_virtgpu_3d_transfer_to_host *args = data; struct virtio_gpu_object *bo; struct virtio_gpu_object_array *objs; struct virtio_gpu_fence *fence; int ret; u32 offset = args->offset; objs = virtio_gpu_array_from_handles(file, &args->bo_handle, 1); if (objs == NULL) return -ENOENT; bo = gem_to_virtio_gpu_obj(objs->objs[0]); if (bo->guest_blob && !bo->host3d_blob) { ret = -EINVAL; goto err_put_free; } if (!vgdev->has_virgl_3d) { virtio_gpu_cmd_transfer_to_host_2d (vgdev, offset, args->box.w, args->box.h, args->box.x, args->box.y, objs, NULL); } else { virtio_gpu_create_context(dev, file); if (!bo->host3d_blob && (args->stride || args->layer_stride)) { ret = -EINVAL; goto err_put_free; } ret = virtio_gpu_array_lock_resv(objs); if (ret != 0) goto err_put_free; ret = -ENOMEM; fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0); if (!fence) goto err_unlock; virtio_gpu_cmd_transfer_to_host_3d (vgdev, vfpriv ? vfpriv->ctx_id : 0, offset, args->level, args->stride, args->layer_stride, &args->box, objs, fence); dma_fence_put(&fence->f); } virtio_gpu_notify(vgdev); return 0; err_unlock: virtio_gpu_array_unlock_resv(objs);err_put_free: virtio_gpu_array_put_free(objs); return ret;} static int virtio_gpu_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file){ struct drm_virtgpu_3d_wait *args = data; struct drm_gem_object *obj; long timeout = 15 * HZ; int ret; obj = drm_gem_object_lookup(file, args->handle); if (obj == NULL) return -ENOENT; if (args->flags & VIRTGPU_WAIT_NOWAIT) { ret = dma_resv_test_signaled(obj->resv, DMA_RESV_USAGE_READ); } else { ret = dma_resv_wait_timeout(obj->resv, DMA_RESV_USAGE_READ, true, timeout); } if (ret == 0) ret = -EBUSY; else if (ret > 0) ret = 0; drm_gem_object_put(obj); return ret;} static int virtio_gpu_get_caps_ioctl(struct drm_device *dev, void *data, struct drm_file *file){ struct virtio_gpu_device *vgdev = dev->dev_private; struct drm_virtgpu_get_caps *args = data; unsigned size, host_caps_size; int i; int found_valid = -1; int ret; struct virtio_gpu_drv_cap_cache *cache_ent; void *ptr; if (vgdev->num_capsets == 0) return -ENOSYS; /* don't allow userspace to pass 0 */ if (args->size == 0) return -EINVAL; spin_lock(&vgdev->display_info_lock); for (i = 0; i < vgdev->num_capsets; i++) { if (vgdev->capsets[i].id == args->cap_set_id) { if (vgdev->capsets[i].max_version >= args->cap_set_ver) { found_valid = i; break; } } } if (found_valid == -1) { spin_unlock(&vgdev->display_info_lock); return -EINVAL; } host_caps_size = vgdev->capsets[found_valid].max_size; /* only copy to user the minimum of the host caps size or the guest caps size */ size = min(args->size, host_caps_size); list_for_each_entry(cache_ent, &vgdev->cap_cache, head) { if (cache_ent->id == args->cap_set_id && cache_ent->version == args->cap_set_ver) { spin_unlock(&vgdev->display_info_lock); goto copy_exit; } } spin_unlock(&vgdev->display_info_lock); /* not in cache - need to talk to hw */ ret = virtio_gpu_cmd_get_capset(vgdev, found_valid, args->cap_set_ver, &cache_ent); if (ret) return ret; virtio_gpu_notify(vgdev); copy_exit: ret = wait_event_timeout(vgdev->resp_wq, atomic_read(&cache_ent->is_valid), 5 * HZ); if (!ret) return -EBUSY; /* is_valid check must proceed before copy of the cache entry. */ smp_rmb(); ptr = cache_ent->caps_cache; if (copy_to_user(u64_to_user_ptr(args->addr), ptr, size)) return -EFAULT; return 0;} static int verify_blob(struct virtio_gpu_device *vgdev, struct virtio_gpu_fpriv *vfpriv, struct virtio_gpu_object_params *params, struct drm_virtgpu_resource_create_blob *rc_blob, bool *guest_blob, bool *host3d_blob){ if (!vgdev->has_resource_blob) return -EINVAL; if (rc_blob->blob_flags & ~VIRTGPU_BLOB_FLAG_USE_MASK) return -EINVAL; if (rc_blob->blob_flags & VIRTGPU_BLOB_FLAG_USE_CROSS_DEVICE) { if (!vgdev->has_resource_assign_uuid) return -EINVAL; } switch (rc_blob->blob_mem) { case VIRTGPU_BLOB_MEM_GUEST: *guest_blob = true; break; case VIRTGPU_BLOB_MEM_HOST3D_GUEST: *guest_blob = true; fallthrough; case VIRTGPU_BLOB_MEM_HOST3D: *host3d_blob = true; break; default: return -EINVAL; } if (*host3d_blob) { if (!vgdev->has_virgl_3d) return -EINVAL; /* Must be dword aligned. */ if (rc_blob->cmd_size % 4 != 0) return -EINVAL; params->ctx_id = vfpriv->ctx_id; params->blob_id = rc_blob->blob_id; } else { if (rc_blob->blob_id != 0) return -EINVAL; if (rc_blob->cmd_size != 0) return -EINVAL; } params->blob_mem = rc_blob->blob_mem; params->size = rc_blob->size; params->blob = true; params->blob_flags = rc_blob->blob_flags; params->blob_hints = rc_blob->blob_hints; if (vgdev->has_blob_alignment && !IS_ALIGNED(params->size, vgdev->blob_alignment))Lines 1–500 of 746. 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/* * Copyright (C) 2015 Red Hat, Inc. * All Rights Reserved. * * Authors: * Dave Airlie * Alon Levy * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. */ #include <linux/file.h> #include <linux/sync_file.h> #include <linux/uaccess.h> #include <drm/drm_file.h> #include <drm/virtgpu_drm.h> #include "virtgpu_drv.h" #define VIRTGPU_BLOB_FLAG_USE_MASK (VIRTGPU_BLOB_FLAG_USE_MAPPABLE | \ VIRTGPU_BLOB_FLAG_USE_SHAREABLE | \ VIRTGPU_BLOB_FLAG_USE_CROSS_DEVICE) /* Must be called with &virtio_gpu_fpriv.struct_mutex held. */ static void virtio_gpu_create_context_locked(struct virtio_gpu_device *vgdev, struct virtio_gpu_fpriv *vfpriv) { if (vfpriv->explicit_debug_name) { virtio_gpu_cmd_context_create(vgdev, vfpriv->ctx_id, vfpriv->context_init, strlen(vfpriv->debug_name), vfpriv->debug_name); } else { char dbgname[TASK_COMM_LEN]; get_task_comm(dbgname, current); virtio_gpu_cmd_context_create(vgdev, vfpriv->ctx_id, vfpriv->context_init, strlen(dbgname), dbgname); } vfpriv->context_created = true; } void virtio_gpu_create_context(struct drm_device *dev, struct drm_file *file) { struct virtio_gpu_device *vgdev = dev->dev_private; struct virtio_gpu_fpriv *vfpriv = file->driver_priv; mutex_lock(&vfpriv->context_lock); if (vfpriv->context_created) goto out_unlock; virtio_gpu_create_context_locked(vgdev, vfpriv); out_unlock: mutex_unlock(&vfpriv->context_lock); } static int virtio_gpu_map_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { struct virtio_gpu_device *vgdev = dev->dev_private; struct drm_virtgpu_map *virtio_gpu_map = data; return drm_gem_dumb_map_offset(file, vgdev->ddev, virtio_gpu_map->handle, &virtio_gpu_map->offset); } static int virtio_gpu_getparam_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { struct virtio_gpu_device *vgdev = dev->dev_private; struct drm_virtgpu_getparam *param = data; int value; switch (param->param) { case VIRTGPU_PARAM_3D_FEATURES: value = vgdev->has_virgl_3d ? 1 : 0; break; case VIRTGPU_PARAM_CAPSET_QUERY_FIX: value = 1; break; case VIRTGPU_PARAM_RESOURCE_BLOB: value = vgdev->has_resource_blob ? 1 : 0; break; case VIRTGPU_PARAM_HOST_VISIBLE: value = vgdev->has_host_visible ? 1 : 0; break; case VIRTGPU_PARAM_CROSS_DEVICE: value = vgdev->has_resource_assign_uuid ? 1 : 0; break; case VIRTGPU_PARAM_CONTEXT_INIT: value = vgdev->has_context_init ? 1 : 0; break; case VIRTGPU_PARAM_SUPPORTED_CAPSET_IDs: value = vgdev->capset_id_mask; break; case VIRTGPU_PARAM_EXPLICIT_DEBUG_NAME: value = vgdev->has_context_init ? 1 : 0; break; case VIRTGPU_PARAM_BLOB_ALIGNMENT: if (!vgdev->has_blob_alignment) return -ENOENT; value = vgdev->blob_alignment; break; default: return -EINVAL; } if (copy_to_user(u64_to_user_ptr(param->value), &value, sizeof(int))) return -EFAULT; return 0; } static int virtio_gpu_resource_create_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { struct virtio_gpu_device *vgdev = dev->dev_private; struct drm_virtgpu_resource_create *rc = data; struct virtio_gpu_fence *fence; int ret; struct virtio_gpu_object *qobj; struct drm_gem_object *obj; uint32_t handle = 0; struct virtio_gpu_object_params params = { 0 }; if (vgdev->has_virgl_3d) { virtio_gpu_create_context(dev, file); params.virgl = true; params.target = rc->target; params.bind = rc->bind; params.depth = rc->depth; params.array_size = rc->array_size; params.last_level = rc->last_level; params.nr_samples = rc->nr_samples; params.flags = rc->flags; } else { if (rc->depth > 1) return -EINVAL; if (rc->nr_samples > 1) return -EINVAL; if (rc->last_level > 1) return -EINVAL; if (rc->target != 2) return -EINVAL; if (rc->array_size > 1) return -EINVAL; } params.format = rc->format; params.width = rc->width; params.height = rc->height; params.size = rc->size; /* allocate a single page size object */ if (params.size == 0) params.size = PAGE_SIZE; fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0); if (!fence) return -ENOMEM; ret = virtio_gpu_object_create(vgdev, ¶ms, &qobj, fence); dma_fence_put(&fence->f); if (ret < 0) return ret; obj = &qobj->base.base; ret = drm_gem_handle_create(file, obj, &handle); if (ret) { drm_gem_object_release(obj); return ret; } rc->res_handle = qobj->hw_res_handle; /* similiar to a VM address */ rc->bo_handle = handle; /* * The handle owns the reference now. But we must drop our * remaining reference *after* we no longer need to dereference * the obj. Otherwise userspace could guess the handle and * race closing it from another thread. */ drm_gem_object_put(obj); return 0; } static int virtio_gpu_resource_info_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_virtgpu_resource_info *ri = data; struct drm_gem_object *gobj = NULL; struct virtio_gpu_object *qobj = NULL; gobj = drm_gem_object_lookup(file, ri->bo_handle); if (gobj == NULL) return -ENOENT; qobj = gem_to_virtio_gpu_obj(gobj); ri->size = qobj->base.base.size; ri->res_handle = qobj->hw_res_handle; if (qobj->host3d_blob || qobj->guest_blob) ri->blob_mem = qobj->blob_mem; drm_gem_object_put(gobj); return 0; } static int virtio_gpu_transfer_from_host_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { struct virtio_gpu_device *vgdev = dev->dev_private; struct virtio_gpu_fpriv *vfpriv = file->driver_priv; struct drm_virtgpu_3d_transfer_from_host *args = data; struct virtio_gpu_object *bo; struct virtio_gpu_object_array *objs; struct virtio_gpu_fence *fence; int ret; u32 offset = args->offset; if (vgdev->has_virgl_3d == false) return -ENOSYS; virtio_gpu_create_context(dev, file); objs = virtio_gpu_array_from_handles(file, &args->bo_handle, 1); if (objs == NULL) return -ENOENT; bo = gem_to_virtio_gpu_obj(objs->objs[0]); if (bo->guest_blob && !bo->host3d_blob) { ret = -EINVAL; goto err_put_free; } if (!bo->host3d_blob && (args->stride || args->layer_stride)) { ret = -EINVAL; goto err_put_free; } ret = virtio_gpu_array_lock_resv(objs); if (ret != 0) goto err_put_free; fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0); if (!fence) { ret = -ENOMEM; goto err_unlock; } virtio_gpu_cmd_transfer_from_host_3d (vgdev, vfpriv->ctx_id, offset, args->level, args->stride, args->layer_stride, &args->box, objs, fence); dma_fence_put(&fence->f); virtio_gpu_notify(vgdev); return 0; err_unlock: virtio_gpu_array_unlock_resv(objs); err_put_free: virtio_gpu_array_put_free(objs); return ret; } static int virtio_gpu_transfer_to_host_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { struct virtio_gpu_device *vgdev = dev->dev_private; struct virtio_gpu_fpriv *vfpriv = file->driver_priv; struct drm_virtgpu_3d_transfer_to_host *args = data; struct virtio_gpu_object *bo; struct virtio_gpu_object_array *objs; struct virtio_gpu_fence *fence; int ret; u32 offset = args->offset; objs = virtio_gpu_array_from_handles(file, &args->bo_handle, 1); if (objs == NULL) return -ENOENT; bo = gem_to_virtio_gpu_obj(objs->objs[0]); if (bo->guest_blob && !bo->host3d_blob) { ret = -EINVAL; goto err_put_free; } if (!vgdev->has_virgl_3d) { virtio_gpu_cmd_transfer_to_host_2d (vgdev, offset, args->box.w, args->box.h, args->box.x, args->box.y, objs, NULL); } else { virtio_gpu_create_context(dev, file); if (!bo->host3d_blob && (args->stride || args->layer_stride)) { ret = -EINVAL; goto err_put_free; } ret = virtio_gpu_array_lock_resv(objs); if (ret != 0) goto err_put_free; ret = -ENOMEM; fence = virtio_gpu_fence_alloc(vgdev, vgdev->fence_drv.context, 0); if (!fence) goto err_unlock; virtio_gpu_cmd_transfer_to_host_3d (vgdev, vfpriv ? vfpriv->ctx_id : 0, offset, args->level, args->stride, args->layer_stride, &args->box, objs, fence); dma_fence_put(&fence->f); } virtio_gpu_notify(vgdev); return 0; err_unlock: virtio_gpu_array_unlock_resv(objs); err_put_free: virtio_gpu_array_put_free(objs); return ret; } static int virtio_gpu_wait_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { struct drm_virtgpu_3d_wait *args = data; struct drm_gem_object *obj; long timeout = 15 * HZ; int ret; obj = drm_gem_object_lookup(file, args->handle); if (obj == NULL) return -ENOENT; if (args->flags & VIRTGPU_WAIT_NOWAIT) { ret = dma_resv_test_signaled(obj->resv, DMA_RESV_USAGE_READ); } else { ret = dma_resv_wait_timeout(obj->resv, DMA_RESV_USAGE_READ, true, timeout); } if (ret == 0) ret = -EBUSY; else if (ret > 0) ret = 0; drm_gem_object_put(obj); return ret; } static int virtio_gpu_get_caps_ioctl(struct drm_device *dev, void *data, struct drm_file *file) { struct virtio_gpu_device *vgdev = dev->dev_private; struct drm_virtgpu_get_caps *args = data; unsigned size, host_caps_size; int i; int found_valid = -1; int ret; struct virtio_gpu_drv_cap_cache *cache_ent; void *ptr; if (vgdev->num_capsets == 0) return -ENOSYS; /* don't allow userspace to pass 0 */ if (args->size == 0) return -EINVAL; spin_lock(&vgdev->display_info_lock); for (i = 0; i < vgdev->num_capsets; i++) { if (vgdev->capsets[i].id == args->cap_set_id) { if (vgdev->capsets[i].max_version >= args->cap_set_ver) { found_valid = i; break; } } } if (found_valid == -1) { spin_unlock(&vgdev->display_info_lock); return -EINVAL; } host_caps_size = vgdev->capsets[found_valid].max_size; /* only copy to user the minimum of the host caps size or the guest caps size */ size = min(args->size, host_caps_size); list_for_each_entry(cache_ent, &vgdev->cap_cache, head) { if (cache_ent->id == args->cap_set_id && cache_ent->version == args->cap_set_ver) { spin_unlock(&vgdev->display_info_lock); goto copy_exit; } } spin_unlock(&vgdev->display_info_lock); /* not in cache - need to talk to hw */ ret = virtio_gpu_cmd_get_capset(vgdev, found_valid, args->cap_set_ver, &cache_ent); if (ret) return ret; virtio_gpu_notify(vgdev); copy_exit: ret = wait_event_timeout(vgdev->resp_wq, atomic_read(&cache_ent->is_valid), 5 * HZ); if (!ret) return -EBUSY; /* is_valid check must proceed before copy of the cache entry. */ smp_rmb(); ptr = cache_ent->caps_cache; if (copy_to_user(u64_to_user_ptr(args->addr), ptr, size)) return -EFAULT; return 0; } static int verify_blob(struct virtio_gpu_device *vgdev, struct virtio_gpu_fpriv *vfpriv, struct virtio_gpu_object_params *params, struct drm_virtgpu_resource_create_blob *rc_blob, bool *guest_blob, bool *host3d_blob) { if (!vgdev->has_resource_blob) return -EINVAL; if (rc_blob->blob_flags & ~VIRTGPU_BLOB_FLAG_USE_MASK) return -EINVAL; if (rc_blob->blob_flags & VIRTGPU_BLOB_FLAG_USE_CROSS_DEVICE) { if (!vgdev->has_resource_assign_uuid) return -EINVAL; } switch (rc_blob->blob_mem) { case VIRTGPU_BLOB_MEM_GUEST: *guest_blob = true; break; case VIRTGPU_BLOB_MEM_HOST3D_GUEST: *guest_blob = true; fallthrough; case VIRTGPU_BLOB_MEM_HOST3D: *host3d_blob = true; break; default: return -EINVAL; } if (*host3d_blob) { if (!vgdev->has_virgl_3d) return -EINVAL; /* Must be dword aligned. */ if (rc_blob->cmd_size % 4 != 0) return -EINVAL; params->ctx_id = vfpriv->ctx_id; params->blob_id = rc_blob->blob_id; } else { if (rc_blob->blob_id != 0) return -EINVAL; if (rc_blob->cmd_size != 0) return -EINVAL; } params->blob_mem = rc_blob->blob_mem; params->size = rc_blob->size; params->blob = true; params->blob_flags = rc_blob->blob_flags; params->blob_hints = rc_blob->blob_hints; if (vgdev->has_blob_alignment && !IS_ALIGNED(params->size, vgdev->blob_alignment))