141 lines
3.8 KiB
C
141 lines
3.8 KiB
C
/*
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* Copyright (C) 2015 Red Hat, Inc.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <drm/drmP.h>
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#include "virtgpu_drv.h"
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void virtio_gpu_gem_free_object(struct drm_gem_object *gem_obj)
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{
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struct virtio_gpu_object *obj = gem_to_virtio_gpu_obj(gem_obj);
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if (obj)
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virtio_gpu_object_unref(&obj);
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}
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struct virtio_gpu_object *virtio_gpu_alloc_object(struct drm_device *dev,
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size_t size, bool kernel,
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bool pinned)
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{
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struct virtio_gpu_device *vgdev = dev->dev_private;
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struct virtio_gpu_object *obj;
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int ret;
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ret = virtio_gpu_object_create(vgdev, size, kernel, pinned, &obj);
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if (ret)
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return ERR_PTR(ret);
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return obj;
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}
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int virtio_gpu_gem_create(struct drm_file *file,
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struct drm_device *dev,
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uint64_t size,
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struct drm_gem_object **obj_p,
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uint32_t *handle_p)
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{
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struct virtio_gpu_object *obj;
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int ret;
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u32 handle;
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obj = virtio_gpu_alloc_object(dev, size, false, false);
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if (IS_ERR(obj))
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return PTR_ERR(obj);
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ret = drm_gem_handle_create(file, &obj->gem_base, &handle);
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if (ret) {
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drm_gem_object_release(&obj->gem_base);
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return ret;
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}
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*obj_p = &obj->gem_base;
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/* drop reference from allocate - handle holds it now */
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drm_gem_object_unreference_unlocked(&obj->gem_base);
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*handle_p = handle;
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return 0;
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}
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int virtio_gpu_mode_dumb_create(struct drm_file *file_priv,
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struct drm_device *dev,
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struct drm_mode_create_dumb *args)
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{
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struct virtio_gpu_device *vgdev = dev->dev_private;
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struct drm_gem_object *gobj;
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struct virtio_gpu_object *obj;
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int ret;
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uint32_t pitch;
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uint32_t resid;
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pitch = args->width * ((args->bpp + 1) / 8);
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args->size = pitch * args->height;
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args->size = ALIGN(args->size, PAGE_SIZE);
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ret = virtio_gpu_gem_create(file_priv, dev, args->size, &gobj,
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&args->handle);
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if (ret)
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goto fail;
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virtio_gpu_resource_id_get(vgdev, &resid);
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virtio_gpu_cmd_create_resource(vgdev, resid,
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2, args->width, args->height);
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/* attach the object to the resource */
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obj = gem_to_virtio_gpu_obj(gobj);
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ret = virtio_gpu_object_attach(vgdev, obj, resid, NULL);
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if (ret)
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goto fail;
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obj->dumb = true;
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args->pitch = pitch;
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return ret;
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fail:
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return ret;
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}
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int virtio_gpu_mode_dumb_destroy(struct drm_file *file_priv,
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struct drm_device *dev,
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uint32_t handle)
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{
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return drm_gem_handle_delete(file_priv, handle);
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}
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int virtio_gpu_mode_dumb_mmap(struct drm_file *file_priv,
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struct drm_device *dev,
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uint32_t handle, uint64_t *offset_p)
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{
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struct drm_gem_object *gobj;
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struct virtio_gpu_object *obj;
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BUG_ON(!offset_p);
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gobj = drm_gem_object_lookup(dev, file_priv, handle);
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if (gobj == NULL)
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return -ENOENT;
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obj = gem_to_virtio_gpu_obj(gobj);
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*offset_p = virtio_gpu_object_mmap_offset(obj);
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drm_gem_object_unreference_unlocked(gobj);
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return 0;
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}
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