![Thomas Hellstrom](/assets/img/avatar_default.png)
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
1123 lines
28 KiB
C
1123 lines
28 KiB
C
/**************************************************************************
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*
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* Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
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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 a
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* 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, sub license, 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 portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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* USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#include "vmwgfx_drv.h"
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#include "vmwgfx_drm.h"
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#include "ttm/ttm_object.h"
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#include "ttm/ttm_placement.h"
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#include "drmP.h"
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#define VMW_RES_CONTEXT ttm_driver_type0
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#define VMW_RES_SURFACE ttm_driver_type1
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#define VMW_RES_STREAM ttm_driver_type2
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struct vmw_user_context {
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struct ttm_base_object base;
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struct vmw_resource res;
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};
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struct vmw_user_surface {
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struct ttm_base_object base;
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struct vmw_surface srf;
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};
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struct vmw_user_dma_buffer {
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struct ttm_base_object base;
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struct vmw_dma_buffer dma;
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};
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struct vmw_bo_user_rep {
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uint32_t handle;
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uint64_t map_handle;
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};
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struct vmw_stream {
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struct vmw_resource res;
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uint32_t stream_id;
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};
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struct vmw_user_stream {
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struct ttm_base_object base;
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struct vmw_stream stream;
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};
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static inline struct vmw_dma_buffer *
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vmw_dma_buffer(struct ttm_buffer_object *bo)
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{
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return container_of(bo, struct vmw_dma_buffer, base);
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}
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static inline struct vmw_user_dma_buffer *
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vmw_user_dma_buffer(struct ttm_buffer_object *bo)
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{
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struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
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return container_of(vmw_bo, struct vmw_user_dma_buffer, dma);
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}
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struct vmw_resource *vmw_resource_reference(struct vmw_resource *res)
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{
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kref_get(&res->kref);
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return res;
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}
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static void vmw_resource_release(struct kref *kref)
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{
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struct vmw_resource *res =
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container_of(kref, struct vmw_resource, kref);
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struct vmw_private *dev_priv = res->dev_priv;
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idr_remove(res->idr, res->id);
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write_unlock(&dev_priv->resource_lock);
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if (likely(res->hw_destroy != NULL))
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res->hw_destroy(res);
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if (res->res_free != NULL)
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res->res_free(res);
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else
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kfree(res);
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write_lock(&dev_priv->resource_lock);
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}
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void vmw_resource_unreference(struct vmw_resource **p_res)
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{
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struct vmw_resource *res = *p_res;
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struct vmw_private *dev_priv = res->dev_priv;
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*p_res = NULL;
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write_lock(&dev_priv->resource_lock);
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kref_put(&res->kref, vmw_resource_release);
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write_unlock(&dev_priv->resource_lock);
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}
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static int vmw_resource_init(struct vmw_private *dev_priv,
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struct vmw_resource *res,
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struct idr *idr,
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enum ttm_object_type obj_type,
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void (*res_free) (struct vmw_resource *res))
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{
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int ret;
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kref_init(&res->kref);
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res->hw_destroy = NULL;
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res->res_free = res_free;
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res->res_type = obj_type;
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res->idr = idr;
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res->avail = false;
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res->dev_priv = dev_priv;
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do {
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if (unlikely(idr_pre_get(idr, GFP_KERNEL) == 0))
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return -ENOMEM;
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write_lock(&dev_priv->resource_lock);
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ret = idr_get_new_above(idr, res, 1, &res->id);
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write_unlock(&dev_priv->resource_lock);
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} while (ret == -EAGAIN);
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return ret;
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}
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/**
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* vmw_resource_activate
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*
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* @res: Pointer to the newly created resource
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* @hw_destroy: Destroy function. NULL if none.
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*
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* Activate a resource after the hardware has been made aware of it.
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* Set tye destroy function to @destroy. Typically this frees the
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* resource and destroys the hardware resources associated with it.
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* Activate basically means that the function vmw_resource_lookup will
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* find it.
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*/
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static void vmw_resource_activate(struct vmw_resource *res,
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void (*hw_destroy) (struct vmw_resource *))
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{
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struct vmw_private *dev_priv = res->dev_priv;
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write_lock(&dev_priv->resource_lock);
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res->avail = true;
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res->hw_destroy = hw_destroy;
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write_unlock(&dev_priv->resource_lock);
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}
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struct vmw_resource *vmw_resource_lookup(struct vmw_private *dev_priv,
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struct idr *idr, int id)
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{
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struct vmw_resource *res;
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read_lock(&dev_priv->resource_lock);
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res = idr_find(idr, id);
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if (res && res->avail)
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kref_get(&res->kref);
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else
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res = NULL;
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read_unlock(&dev_priv->resource_lock);
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if (unlikely(res == NULL))
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return NULL;
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return res;
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}
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/**
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* Context management:
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*/
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static void vmw_hw_context_destroy(struct vmw_resource *res)
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{
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struct vmw_private *dev_priv = res->dev_priv;
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struct {
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SVGA3dCmdHeader header;
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SVGA3dCmdDestroyContext body;
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} *cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
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if (unlikely(cmd == NULL)) {
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DRM_ERROR("Failed reserving FIFO space for surface "
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"destruction.\n");
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return;
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}
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cmd->header.id = cpu_to_le32(SVGA_3D_CMD_CONTEXT_DESTROY);
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cmd->header.size = cpu_to_le32(sizeof(cmd->body));
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cmd->body.cid = cpu_to_le32(res->id);
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vmw_fifo_commit(dev_priv, sizeof(*cmd));
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vmw_3d_resource_dec(dev_priv);
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}
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static int vmw_context_init(struct vmw_private *dev_priv,
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struct vmw_resource *res,
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void (*res_free) (struct vmw_resource *res))
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{
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int ret;
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struct {
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SVGA3dCmdHeader header;
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SVGA3dCmdDefineContext body;
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} *cmd;
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ret = vmw_resource_init(dev_priv, res, &dev_priv->context_idr,
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VMW_RES_CONTEXT, res_free);
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if (unlikely(ret != 0)) {
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if (res_free == NULL)
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kfree(res);
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else
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res_free(res);
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return ret;
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}
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cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
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if (unlikely(cmd == NULL)) {
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DRM_ERROR("Fifo reserve failed.\n");
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vmw_resource_unreference(&res);
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return -ENOMEM;
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}
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cmd->header.id = cpu_to_le32(SVGA_3D_CMD_CONTEXT_DEFINE);
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cmd->header.size = cpu_to_le32(sizeof(cmd->body));
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cmd->body.cid = cpu_to_le32(res->id);
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vmw_fifo_commit(dev_priv, sizeof(*cmd));
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(void) vmw_3d_resource_inc(dev_priv);
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vmw_resource_activate(res, vmw_hw_context_destroy);
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return 0;
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}
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struct vmw_resource *vmw_context_alloc(struct vmw_private *dev_priv)
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{
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struct vmw_resource *res = kmalloc(sizeof(*res), GFP_KERNEL);
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int ret;
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if (unlikely(res == NULL))
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return NULL;
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ret = vmw_context_init(dev_priv, res, NULL);
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return (ret == 0) ? res : NULL;
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}
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/**
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* User-space context management:
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*/
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static void vmw_user_context_free(struct vmw_resource *res)
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{
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struct vmw_user_context *ctx =
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container_of(res, struct vmw_user_context, res);
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kfree(ctx);
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}
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/**
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* This function is called when user space has no more references on the
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* base object. It releases the base-object's reference on the resource object.
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*/
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static void vmw_user_context_base_release(struct ttm_base_object **p_base)
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{
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struct ttm_base_object *base = *p_base;
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struct vmw_user_context *ctx =
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container_of(base, struct vmw_user_context, base);
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struct vmw_resource *res = &ctx->res;
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*p_base = NULL;
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vmw_resource_unreference(&res);
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}
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int vmw_context_destroy_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct vmw_private *dev_priv = vmw_priv(dev);
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struct vmw_resource *res;
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struct vmw_user_context *ctx;
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struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
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struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
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int ret = 0;
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res = vmw_resource_lookup(dev_priv, &dev_priv->context_idr, arg->cid);
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if (unlikely(res == NULL))
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return -EINVAL;
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if (res->res_free != &vmw_user_context_free) {
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ret = -EINVAL;
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goto out;
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}
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ctx = container_of(res, struct vmw_user_context, res);
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if (ctx->base.tfile != tfile && !ctx->base.shareable) {
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ret = -EPERM;
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goto out;
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}
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ttm_ref_object_base_unref(tfile, ctx->base.hash.key, TTM_REF_USAGE);
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out:
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vmw_resource_unreference(&res);
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return ret;
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}
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int vmw_context_define_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct vmw_private *dev_priv = vmw_priv(dev);
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struct vmw_user_context *ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
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struct vmw_resource *res;
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struct vmw_resource *tmp;
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struct drm_vmw_context_arg *arg = (struct drm_vmw_context_arg *)data;
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struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
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int ret;
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if (unlikely(ctx == NULL))
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return -ENOMEM;
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res = &ctx->res;
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ctx->base.shareable = false;
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ctx->base.tfile = NULL;
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ret = vmw_context_init(dev_priv, res, vmw_user_context_free);
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if (unlikely(ret != 0))
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return ret;
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tmp = vmw_resource_reference(&ctx->res);
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ret = ttm_base_object_init(tfile, &ctx->base, false, VMW_RES_CONTEXT,
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&vmw_user_context_base_release, NULL);
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if (unlikely(ret != 0)) {
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vmw_resource_unreference(&tmp);
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goto out_err;
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}
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arg->cid = res->id;
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out_err:
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vmw_resource_unreference(&res);
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return ret;
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}
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int vmw_context_check(struct vmw_private *dev_priv,
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struct ttm_object_file *tfile,
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int id)
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{
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struct vmw_resource *res;
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int ret = 0;
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read_lock(&dev_priv->resource_lock);
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res = idr_find(&dev_priv->context_idr, id);
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if (res && res->avail) {
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struct vmw_user_context *ctx =
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container_of(res, struct vmw_user_context, res);
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if (ctx->base.tfile != tfile && !ctx->base.shareable)
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ret = -EPERM;
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} else
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ret = -EINVAL;
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read_unlock(&dev_priv->resource_lock);
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return ret;
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}
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/**
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* Surface management.
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*/
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static void vmw_hw_surface_destroy(struct vmw_resource *res)
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{
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struct vmw_private *dev_priv = res->dev_priv;
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struct {
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SVGA3dCmdHeader header;
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SVGA3dCmdDestroySurface body;
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} *cmd = vmw_fifo_reserve(dev_priv, sizeof(*cmd));
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if (unlikely(cmd == NULL)) {
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DRM_ERROR("Failed reserving FIFO space for surface "
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"destruction.\n");
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return;
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}
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cmd->header.id = cpu_to_le32(SVGA_3D_CMD_SURFACE_DESTROY);
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cmd->header.size = cpu_to_le32(sizeof(cmd->body));
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cmd->body.sid = cpu_to_le32(res->id);
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vmw_fifo_commit(dev_priv, sizeof(*cmd));
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vmw_3d_resource_dec(dev_priv);
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}
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void vmw_surface_res_free(struct vmw_resource *res)
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{
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struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
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kfree(srf->sizes);
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kfree(srf->snooper.image);
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kfree(srf);
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}
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int vmw_surface_init(struct vmw_private *dev_priv,
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struct vmw_surface *srf,
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void (*res_free) (struct vmw_resource *res))
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{
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int ret;
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struct {
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SVGA3dCmdHeader header;
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SVGA3dCmdDefineSurface body;
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} *cmd;
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SVGA3dSize *cmd_size;
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struct vmw_resource *res = &srf->res;
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struct drm_vmw_size *src_size;
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size_t submit_size;
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uint32_t cmd_len;
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int i;
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BUG_ON(res_free == NULL);
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ret = vmw_resource_init(dev_priv, res, &dev_priv->surface_idr,
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VMW_RES_SURFACE, res_free);
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if (unlikely(ret != 0)) {
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res_free(res);
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return ret;
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}
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submit_size = sizeof(*cmd) + srf->num_sizes * sizeof(SVGA3dSize);
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cmd_len = sizeof(cmd->body) + srf->num_sizes * sizeof(SVGA3dSize);
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cmd = vmw_fifo_reserve(dev_priv, submit_size);
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if (unlikely(cmd == NULL)) {
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DRM_ERROR("Fifo reserve failed for create surface.\n");
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vmw_resource_unreference(&res);
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return -ENOMEM;
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}
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cmd->header.id = cpu_to_le32(SVGA_3D_CMD_SURFACE_DEFINE);
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cmd->header.size = cpu_to_le32(cmd_len);
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cmd->body.sid = cpu_to_le32(res->id);
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cmd->body.surfaceFlags = cpu_to_le32(srf->flags);
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cmd->body.format = cpu_to_le32(srf->format);
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for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i) {
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cmd->body.face[i].numMipLevels =
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cpu_to_le32(srf->mip_levels[i]);
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}
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cmd += 1;
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cmd_size = (SVGA3dSize *) cmd;
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src_size = srf->sizes;
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for (i = 0; i < srf->num_sizes; ++i, cmd_size++, src_size++) {
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cmd_size->width = cpu_to_le32(src_size->width);
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cmd_size->height = cpu_to_le32(src_size->height);
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cmd_size->depth = cpu_to_le32(src_size->depth);
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}
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vmw_fifo_commit(dev_priv, submit_size);
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(void) vmw_3d_resource_inc(dev_priv);
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vmw_resource_activate(res, vmw_hw_surface_destroy);
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return 0;
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}
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|
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static void vmw_user_surface_free(struct vmw_resource *res)
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{
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struct vmw_surface *srf = container_of(res, struct vmw_surface, res);
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struct vmw_user_surface *user_srf =
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container_of(srf, struct vmw_user_surface, srf);
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kfree(srf->sizes);
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kfree(srf->snooper.image);
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kfree(user_srf);
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}
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|
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int vmw_user_surface_lookup_handle(struct vmw_private *dev_priv,
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struct ttm_object_file *tfile,
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uint32_t handle, struct vmw_surface **out)
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{
|
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struct vmw_resource *res;
|
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struct vmw_surface *srf;
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struct vmw_user_surface *user_srf;
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struct ttm_base_object *base;
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int ret = -EINVAL;
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|
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base = ttm_base_object_lookup(tfile, handle);
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if (unlikely(base == NULL))
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return -EINVAL;
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|
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if (unlikely(base->object_type != VMW_RES_SURFACE))
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goto out_bad_resource;
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|
|
user_srf = container_of(base, struct vmw_user_surface, base);
|
|
srf = &user_srf->srf;
|
|
res = &srf->res;
|
|
|
|
read_lock(&dev_priv->resource_lock);
|
|
|
|
if (!res->avail || res->res_free != &vmw_user_surface_free) {
|
|
read_unlock(&dev_priv->resource_lock);
|
|
goto out_bad_resource;
|
|
}
|
|
|
|
kref_get(&res->kref);
|
|
read_unlock(&dev_priv->resource_lock);
|
|
|
|
*out = srf;
|
|
ret = 0;
|
|
|
|
out_bad_resource:
|
|
ttm_base_object_unref(&base);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void vmw_user_surface_base_release(struct ttm_base_object **p_base)
|
|
{
|
|
struct ttm_base_object *base = *p_base;
|
|
struct vmw_user_surface *user_srf =
|
|
container_of(base, struct vmw_user_surface, base);
|
|
struct vmw_resource *res = &user_srf->srf.res;
|
|
|
|
*p_base = NULL;
|
|
vmw_resource_unreference(&res);
|
|
}
|
|
|
|
int vmw_surface_destroy_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_vmw_surface_arg *arg = (struct drm_vmw_surface_arg *)data;
|
|
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
|
|
|
|
return ttm_ref_object_base_unref(tfile, arg->sid, TTM_REF_USAGE);
|
|
}
|
|
|
|
int vmw_surface_define_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct vmw_private *dev_priv = vmw_priv(dev);
|
|
struct vmw_user_surface *user_srf =
|
|
kmalloc(sizeof(*user_srf), GFP_KERNEL);
|
|
struct vmw_surface *srf;
|
|
struct vmw_resource *res;
|
|
struct vmw_resource *tmp;
|
|
union drm_vmw_surface_create_arg *arg =
|
|
(union drm_vmw_surface_create_arg *)data;
|
|
struct drm_vmw_surface_create_req *req = &arg->req;
|
|
struct drm_vmw_surface_arg *rep = &arg->rep;
|
|
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
|
|
struct drm_vmw_size __user *user_sizes;
|
|
int ret;
|
|
int i;
|
|
|
|
if (unlikely(user_srf == NULL))
|
|
return -ENOMEM;
|
|
|
|
srf = &user_srf->srf;
|
|
res = &srf->res;
|
|
|
|
srf->flags = req->flags;
|
|
srf->format = req->format;
|
|
srf->scanout = req->scanout;
|
|
memcpy(srf->mip_levels, req->mip_levels, sizeof(srf->mip_levels));
|
|
srf->num_sizes = 0;
|
|
for (i = 0; i < DRM_VMW_MAX_SURFACE_FACES; ++i)
|
|
srf->num_sizes += srf->mip_levels[i];
|
|
|
|
if (srf->num_sizes > DRM_VMW_MAX_SURFACE_FACES *
|
|
DRM_VMW_MAX_MIP_LEVELS) {
|
|
ret = -EINVAL;
|
|
goto out_err0;
|
|
}
|
|
|
|
srf->sizes = kmalloc(srf->num_sizes * sizeof(*srf->sizes), GFP_KERNEL);
|
|
if (unlikely(srf->sizes == NULL)) {
|
|
ret = -ENOMEM;
|
|
goto out_err0;
|
|
}
|
|
|
|
user_sizes = (struct drm_vmw_size __user *)(unsigned long)
|
|
req->size_addr;
|
|
|
|
ret = copy_from_user(srf->sizes, user_sizes,
|
|
srf->num_sizes * sizeof(*srf->sizes));
|
|
if (unlikely(ret != 0)) {
|
|
ret = -EFAULT;
|
|
goto out_err1;
|
|
}
|
|
|
|
if (srf->scanout &&
|
|
srf->num_sizes == 1 &&
|
|
srf->sizes[0].width == 64 &&
|
|
srf->sizes[0].height == 64 &&
|
|
srf->format == SVGA3D_A8R8G8B8) {
|
|
|
|
srf->snooper.image = kmalloc(64 * 64 * 4, GFP_KERNEL);
|
|
/* clear the image */
|
|
if (srf->snooper.image) {
|
|
memset(srf->snooper.image, 0x00, 64 * 64 * 4);
|
|
} else {
|
|
DRM_ERROR("Failed to allocate cursor_image\n");
|
|
ret = -ENOMEM;
|
|
goto out_err1;
|
|
}
|
|
} else {
|
|
srf->snooper.image = NULL;
|
|
}
|
|
srf->snooper.crtc = NULL;
|
|
|
|
user_srf->base.shareable = false;
|
|
user_srf->base.tfile = NULL;
|
|
|
|
/**
|
|
* From this point, the generic resource management functions
|
|
* destroy the object on failure.
|
|
*/
|
|
|
|
ret = vmw_surface_init(dev_priv, srf, vmw_user_surface_free);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
tmp = vmw_resource_reference(&srf->res);
|
|
ret = ttm_base_object_init(tfile, &user_srf->base,
|
|
req->shareable, VMW_RES_SURFACE,
|
|
&vmw_user_surface_base_release, NULL);
|
|
|
|
if (unlikely(ret != 0)) {
|
|
vmw_resource_unreference(&tmp);
|
|
vmw_resource_unreference(&res);
|
|
return ret;
|
|
}
|
|
|
|
rep->sid = user_srf->base.hash.key;
|
|
if (rep->sid == SVGA3D_INVALID_ID)
|
|
DRM_ERROR("Created bad Surface ID.\n");
|
|
|
|
vmw_resource_unreference(&res);
|
|
return 0;
|
|
out_err1:
|
|
kfree(srf->sizes);
|
|
out_err0:
|
|
kfree(user_srf);
|
|
return ret;
|
|
}
|
|
|
|
int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
union drm_vmw_surface_reference_arg *arg =
|
|
(union drm_vmw_surface_reference_arg *)data;
|
|
struct drm_vmw_surface_arg *req = &arg->req;
|
|
struct drm_vmw_surface_create_req *rep = &arg->rep;
|
|
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
|
|
struct vmw_surface *srf;
|
|
struct vmw_user_surface *user_srf;
|
|
struct drm_vmw_size __user *user_sizes;
|
|
struct ttm_base_object *base;
|
|
int ret = -EINVAL;
|
|
|
|
base = ttm_base_object_lookup(tfile, req->sid);
|
|
if (unlikely(base == NULL)) {
|
|
DRM_ERROR("Could not find surface to reference.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (unlikely(base->object_type != VMW_RES_SURFACE))
|
|
goto out_bad_resource;
|
|
|
|
user_srf = container_of(base, struct vmw_user_surface, base);
|
|
srf = &user_srf->srf;
|
|
|
|
ret = ttm_ref_object_add(tfile, &user_srf->base, TTM_REF_USAGE, NULL);
|
|
if (unlikely(ret != 0)) {
|
|
DRM_ERROR("Could not add a reference to a surface.\n");
|
|
goto out_no_reference;
|
|
}
|
|
|
|
rep->flags = srf->flags;
|
|
rep->format = srf->format;
|
|
memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels));
|
|
user_sizes = (struct drm_vmw_size __user *)(unsigned long)
|
|
rep->size_addr;
|
|
|
|
if (user_sizes)
|
|
ret = copy_to_user(user_sizes, srf->sizes,
|
|
srf->num_sizes * sizeof(*srf->sizes));
|
|
if (unlikely(ret != 0)) {
|
|
DRM_ERROR("copy_to_user failed %p %u\n",
|
|
user_sizes, srf->num_sizes);
|
|
ret = -EFAULT;
|
|
}
|
|
out_bad_resource:
|
|
out_no_reference:
|
|
ttm_base_object_unref(&base);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int vmw_surface_check(struct vmw_private *dev_priv,
|
|
struct ttm_object_file *tfile,
|
|
uint32_t handle, int *id)
|
|
{
|
|
struct ttm_base_object *base;
|
|
struct vmw_user_surface *user_srf;
|
|
|
|
int ret = -EPERM;
|
|
|
|
base = ttm_base_object_lookup(tfile, handle);
|
|
if (unlikely(base == NULL))
|
|
return -EINVAL;
|
|
|
|
if (unlikely(base->object_type != VMW_RES_SURFACE))
|
|
goto out_bad_surface;
|
|
|
|
user_srf = container_of(base, struct vmw_user_surface, base);
|
|
*id = user_srf->srf.res.id;
|
|
ret = 0;
|
|
|
|
out_bad_surface:
|
|
/**
|
|
* FIXME: May deadlock here when called from the
|
|
* command parsing code.
|
|
*/
|
|
|
|
ttm_base_object_unref(&base);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* Buffer management.
|
|
*/
|
|
|
|
static size_t vmw_dmabuf_acc_size(struct ttm_bo_global *glob,
|
|
unsigned long num_pages)
|
|
{
|
|
static size_t bo_user_size = ~0;
|
|
|
|
size_t page_array_size =
|
|
(num_pages * sizeof(void *) + PAGE_SIZE - 1) & PAGE_MASK;
|
|
|
|
if (unlikely(bo_user_size == ~0)) {
|
|
bo_user_size = glob->ttm_bo_extra_size +
|
|
ttm_round_pot(sizeof(struct vmw_dma_buffer));
|
|
}
|
|
|
|
return bo_user_size + page_array_size;
|
|
}
|
|
|
|
void vmw_dmabuf_bo_free(struct ttm_buffer_object *bo)
|
|
{
|
|
struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
|
|
struct ttm_bo_global *glob = bo->glob;
|
|
|
|
ttm_mem_global_free(glob->mem_glob, bo->acc_size);
|
|
kfree(vmw_bo);
|
|
}
|
|
|
|
int vmw_dmabuf_init(struct vmw_private *dev_priv,
|
|
struct vmw_dma_buffer *vmw_bo,
|
|
size_t size, struct ttm_placement *placement,
|
|
bool interruptible,
|
|
void (*bo_free) (struct ttm_buffer_object *bo))
|
|
{
|
|
struct ttm_bo_device *bdev = &dev_priv->bdev;
|
|
struct ttm_mem_global *mem_glob = bdev->glob->mem_glob;
|
|
size_t acc_size;
|
|
int ret;
|
|
|
|
BUG_ON(!bo_free);
|
|
|
|
acc_size =
|
|
vmw_dmabuf_acc_size(bdev->glob,
|
|
(size + PAGE_SIZE - 1) >> PAGE_SHIFT);
|
|
|
|
ret = ttm_mem_global_alloc(mem_glob, acc_size, false, false);
|
|
if (unlikely(ret != 0)) {
|
|
/* we must free the bo here as
|
|
* ttm_buffer_object_init does so as well */
|
|
bo_free(&vmw_bo->base);
|
|
return ret;
|
|
}
|
|
|
|
memset(vmw_bo, 0, sizeof(*vmw_bo));
|
|
|
|
INIT_LIST_HEAD(&vmw_bo->validate_list);
|
|
|
|
ret = ttm_bo_init(bdev, &vmw_bo->base, size,
|
|
ttm_bo_type_device, placement,
|
|
0, 0, interruptible,
|
|
NULL, acc_size, bo_free);
|
|
return ret;
|
|
}
|
|
|
|
static void vmw_user_dmabuf_destroy(struct ttm_buffer_object *bo)
|
|
{
|
|
struct vmw_user_dma_buffer *vmw_user_bo = vmw_user_dma_buffer(bo);
|
|
struct ttm_bo_global *glob = bo->glob;
|
|
|
|
ttm_mem_global_free(glob->mem_glob, bo->acc_size);
|
|
kfree(vmw_user_bo);
|
|
}
|
|
|
|
static void vmw_user_dmabuf_release(struct ttm_base_object **p_base)
|
|
{
|
|
struct vmw_user_dma_buffer *vmw_user_bo;
|
|
struct ttm_base_object *base = *p_base;
|
|
struct ttm_buffer_object *bo;
|
|
|
|
*p_base = NULL;
|
|
|
|
if (unlikely(base == NULL))
|
|
return;
|
|
|
|
vmw_user_bo = container_of(base, struct vmw_user_dma_buffer, base);
|
|
bo = &vmw_user_bo->dma.base;
|
|
ttm_bo_unref(&bo);
|
|
}
|
|
|
|
int vmw_dmabuf_alloc_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct vmw_private *dev_priv = vmw_priv(dev);
|
|
union drm_vmw_alloc_dmabuf_arg *arg =
|
|
(union drm_vmw_alloc_dmabuf_arg *)data;
|
|
struct drm_vmw_alloc_dmabuf_req *req = &arg->req;
|
|
struct drm_vmw_dmabuf_rep *rep = &arg->rep;
|
|
struct vmw_user_dma_buffer *vmw_user_bo;
|
|
struct ttm_buffer_object *tmp;
|
|
struct vmw_master *vmaster = vmw_master(file_priv->master);
|
|
int ret;
|
|
|
|
vmw_user_bo = kzalloc(sizeof(*vmw_user_bo), GFP_KERNEL);
|
|
if (unlikely(vmw_user_bo == NULL))
|
|
return -ENOMEM;
|
|
|
|
ret = ttm_read_lock(&vmaster->lock, true);
|
|
if (unlikely(ret != 0)) {
|
|
kfree(vmw_user_bo);
|
|
return ret;
|
|
}
|
|
|
|
ret = vmw_dmabuf_init(dev_priv, &vmw_user_bo->dma, req->size,
|
|
&vmw_vram_sys_placement, true,
|
|
&vmw_user_dmabuf_destroy);
|
|
if (unlikely(ret != 0))
|
|
goto out_no_dmabuf;
|
|
|
|
tmp = ttm_bo_reference(&vmw_user_bo->dma.base);
|
|
ret = ttm_base_object_init(vmw_fpriv(file_priv)->tfile,
|
|
&vmw_user_bo->base,
|
|
false,
|
|
ttm_buffer_type,
|
|
&vmw_user_dmabuf_release, NULL);
|
|
if (unlikely(ret != 0))
|
|
goto out_no_base_object;
|
|
else {
|
|
rep->handle = vmw_user_bo->base.hash.key;
|
|
rep->map_handle = vmw_user_bo->dma.base.addr_space_offset;
|
|
rep->cur_gmr_id = vmw_user_bo->base.hash.key;
|
|
rep->cur_gmr_offset = 0;
|
|
}
|
|
|
|
out_no_base_object:
|
|
ttm_bo_unref(&tmp);
|
|
out_no_dmabuf:
|
|
ttm_read_unlock(&vmaster->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int vmw_dmabuf_unref_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_vmw_unref_dmabuf_arg *arg =
|
|
(struct drm_vmw_unref_dmabuf_arg *)data;
|
|
|
|
return ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
|
|
arg->handle,
|
|
TTM_REF_USAGE);
|
|
}
|
|
|
|
uint32_t vmw_dmabuf_validate_node(struct ttm_buffer_object *bo,
|
|
uint32_t cur_validate_node)
|
|
{
|
|
struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
|
|
|
|
if (likely(vmw_bo->on_validate_list))
|
|
return vmw_bo->cur_validate_node;
|
|
|
|
vmw_bo->cur_validate_node = cur_validate_node;
|
|
vmw_bo->on_validate_list = true;
|
|
|
|
return cur_validate_node;
|
|
}
|
|
|
|
void vmw_dmabuf_validate_clear(struct ttm_buffer_object *bo)
|
|
{
|
|
struct vmw_dma_buffer *vmw_bo = vmw_dma_buffer(bo);
|
|
|
|
vmw_bo->on_validate_list = false;
|
|
}
|
|
|
|
int vmw_user_dmabuf_lookup(struct ttm_object_file *tfile,
|
|
uint32_t handle, struct vmw_dma_buffer **out)
|
|
{
|
|
struct vmw_user_dma_buffer *vmw_user_bo;
|
|
struct ttm_base_object *base;
|
|
|
|
base = ttm_base_object_lookup(tfile, handle);
|
|
if (unlikely(base == NULL)) {
|
|
printk(KERN_ERR "Invalid buffer object handle 0x%08lx.\n",
|
|
(unsigned long)handle);
|
|
return -ESRCH;
|
|
}
|
|
|
|
if (unlikely(base->object_type != ttm_buffer_type)) {
|
|
ttm_base_object_unref(&base);
|
|
printk(KERN_ERR "Invalid buffer object handle 0x%08lx.\n",
|
|
(unsigned long)handle);
|
|
return -EINVAL;
|
|
}
|
|
|
|
vmw_user_bo = container_of(base, struct vmw_user_dma_buffer, base);
|
|
(void)ttm_bo_reference(&vmw_user_bo->dma.base);
|
|
ttm_base_object_unref(&base);
|
|
*out = &vmw_user_bo->dma;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Stream management
|
|
*/
|
|
|
|
static void vmw_stream_destroy(struct vmw_resource *res)
|
|
{
|
|
struct vmw_private *dev_priv = res->dev_priv;
|
|
struct vmw_stream *stream;
|
|
int ret;
|
|
|
|
DRM_INFO("%s: unref\n", __func__);
|
|
stream = container_of(res, struct vmw_stream, res);
|
|
|
|
ret = vmw_overlay_unref(dev_priv, stream->stream_id);
|
|
WARN_ON(ret != 0);
|
|
}
|
|
|
|
static int vmw_stream_init(struct vmw_private *dev_priv,
|
|
struct vmw_stream *stream,
|
|
void (*res_free) (struct vmw_resource *res))
|
|
{
|
|
struct vmw_resource *res = &stream->res;
|
|
int ret;
|
|
|
|
ret = vmw_resource_init(dev_priv, res, &dev_priv->stream_idr,
|
|
VMW_RES_STREAM, res_free);
|
|
|
|
if (unlikely(ret != 0)) {
|
|
if (res_free == NULL)
|
|
kfree(stream);
|
|
else
|
|
res_free(&stream->res);
|
|
return ret;
|
|
}
|
|
|
|
ret = vmw_overlay_claim(dev_priv, &stream->stream_id);
|
|
if (ret) {
|
|
vmw_resource_unreference(&res);
|
|
return ret;
|
|
}
|
|
|
|
DRM_INFO("%s: claimed\n", __func__);
|
|
|
|
vmw_resource_activate(&stream->res, vmw_stream_destroy);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* User-space context management:
|
|
*/
|
|
|
|
static void vmw_user_stream_free(struct vmw_resource *res)
|
|
{
|
|
struct vmw_user_stream *stream =
|
|
container_of(res, struct vmw_user_stream, stream.res);
|
|
|
|
kfree(stream);
|
|
}
|
|
|
|
/**
|
|
* This function is called when user space has no more references on the
|
|
* base object. It releases the base-object's reference on the resource object.
|
|
*/
|
|
|
|
static void vmw_user_stream_base_release(struct ttm_base_object **p_base)
|
|
{
|
|
struct ttm_base_object *base = *p_base;
|
|
struct vmw_user_stream *stream =
|
|
container_of(base, struct vmw_user_stream, base);
|
|
struct vmw_resource *res = &stream->stream.res;
|
|
|
|
*p_base = NULL;
|
|
vmw_resource_unreference(&res);
|
|
}
|
|
|
|
int vmw_stream_unref_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct vmw_private *dev_priv = vmw_priv(dev);
|
|
struct vmw_resource *res;
|
|
struct vmw_user_stream *stream;
|
|
struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data;
|
|
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
|
|
int ret = 0;
|
|
|
|
res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, arg->stream_id);
|
|
if (unlikely(res == NULL))
|
|
return -EINVAL;
|
|
|
|
if (res->res_free != &vmw_user_stream_free) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
stream = container_of(res, struct vmw_user_stream, stream.res);
|
|
if (stream->base.tfile != tfile) {
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
ttm_ref_object_base_unref(tfile, stream->base.hash.key, TTM_REF_USAGE);
|
|
out:
|
|
vmw_resource_unreference(&res);
|
|
return ret;
|
|
}
|
|
|
|
int vmw_stream_claim_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct vmw_private *dev_priv = vmw_priv(dev);
|
|
struct vmw_user_stream *stream = kmalloc(sizeof(*stream), GFP_KERNEL);
|
|
struct vmw_resource *res;
|
|
struct vmw_resource *tmp;
|
|
struct drm_vmw_stream_arg *arg = (struct drm_vmw_stream_arg *)data;
|
|
struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
|
|
int ret;
|
|
|
|
if (unlikely(stream == NULL))
|
|
return -ENOMEM;
|
|
|
|
res = &stream->stream.res;
|
|
stream->base.shareable = false;
|
|
stream->base.tfile = NULL;
|
|
|
|
ret = vmw_stream_init(dev_priv, &stream->stream, vmw_user_stream_free);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
tmp = vmw_resource_reference(res);
|
|
ret = ttm_base_object_init(tfile, &stream->base, false, VMW_RES_STREAM,
|
|
&vmw_user_stream_base_release, NULL);
|
|
|
|
if (unlikely(ret != 0)) {
|
|
vmw_resource_unreference(&tmp);
|
|
goto out_err;
|
|
}
|
|
|
|
arg->stream_id = res->id;
|
|
out_err:
|
|
vmw_resource_unreference(&res);
|
|
return ret;
|
|
}
|
|
|
|
int vmw_user_stream_lookup(struct vmw_private *dev_priv,
|
|
struct ttm_object_file *tfile,
|
|
uint32_t *inout_id, struct vmw_resource **out)
|
|
{
|
|
struct vmw_user_stream *stream;
|
|
struct vmw_resource *res;
|
|
int ret;
|
|
|
|
res = vmw_resource_lookup(dev_priv, &dev_priv->stream_idr, *inout_id);
|
|
if (unlikely(res == NULL))
|
|
return -EINVAL;
|
|
|
|
if (res->res_free != &vmw_user_stream_free) {
|
|
ret = -EINVAL;
|
|
goto err_ref;
|
|
}
|
|
|
|
stream = container_of(res, struct vmw_user_stream, stream.res);
|
|
if (stream->base.tfile != tfile) {
|
|
ret = -EPERM;
|
|
goto err_ref;
|
|
}
|
|
|
|
*inout_id = stream->stream.stream_id;
|
|
*out = res;
|
|
return 0;
|
|
err_ref:
|
|
vmw_resource_unreference(&res);
|
|
return ret;
|
|
}
|