mirror of https://gitee.com/openkylin/linux.git
1372 lines
37 KiB
C
1372 lines
37 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_reg.h"
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#include <drm/ttm/ttm_bo_api.h>
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#include <drm/ttm/ttm_placement.h>
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static int vmw_cmd_invalid(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context,
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SVGA3dCmdHeader *header)
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{
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return capable(CAP_SYS_ADMIN) ? : -EINVAL;
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}
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static int vmw_cmd_ok(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context,
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SVGA3dCmdHeader *header)
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{
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return 0;
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}
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static void vmw_resource_to_validate_list(struct vmw_sw_context *sw_context,
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struct vmw_resource **p_res)
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{
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struct vmw_resource *res = *p_res;
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if (list_empty(&res->validate_head)) {
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list_add_tail(&res->validate_head, &sw_context->resource_list);
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*p_res = NULL;
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} else
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vmw_resource_unreference(p_res);
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}
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/**
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* vmw_bo_to_validate_list - add a bo to a validate list
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*
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* @sw_context: The software context used for this command submission batch.
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* @bo: The buffer object to add.
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* @fence_flags: Fence flags to be or'ed with any other fence flags for
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* this buffer on this submission batch.
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* @p_val_node: If non-NULL Will be updated with the validate node number
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* on return.
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*
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* Returns -EINVAL if the limit of number of buffer objects per command
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* submission is reached.
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*/
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static int vmw_bo_to_validate_list(struct vmw_sw_context *sw_context,
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struct ttm_buffer_object *bo,
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uint32_t *p_val_node)
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{
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uint32_t val_node;
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struct ttm_validate_buffer *val_buf;
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val_node = vmw_dmabuf_validate_node(bo, sw_context->cur_val_buf);
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if (unlikely(val_node >= VMWGFX_MAX_VALIDATIONS)) {
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DRM_ERROR("Max number of DMA buffers per submission"
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" exceeded.\n");
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return -EINVAL;
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}
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val_buf = &sw_context->val_bufs[val_node];
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if (unlikely(val_node == sw_context->cur_val_buf)) {
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val_buf->bo = ttm_bo_reference(bo);
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list_add_tail(&val_buf->head, &sw_context->validate_nodes);
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++sw_context->cur_val_buf;
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}
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sw_context->fence_flags |= DRM_VMW_FENCE_FLAG_EXEC;
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if (p_val_node)
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*p_val_node = val_node;
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return 0;
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}
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static int vmw_cmd_cid_check(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context,
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SVGA3dCmdHeader *header)
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{
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struct vmw_resource *ctx;
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struct vmw_cid_cmd {
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SVGA3dCmdHeader header;
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__le32 cid;
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} *cmd;
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int ret;
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cmd = container_of(header, struct vmw_cid_cmd, header);
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if (likely(sw_context->cid_valid && cmd->cid == sw_context->last_cid))
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return 0;
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ret = vmw_context_check(dev_priv, sw_context->tfile, cmd->cid,
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&ctx);
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if (unlikely(ret != 0)) {
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DRM_ERROR("Could not find or use context %u\n",
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(unsigned) cmd->cid);
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return ret;
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}
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sw_context->last_cid = cmd->cid;
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sw_context->cid_valid = true;
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sw_context->cur_ctx = ctx;
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vmw_resource_to_validate_list(sw_context, &ctx);
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return 0;
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}
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static int vmw_cmd_sid_check(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context,
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uint32_t *sid)
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{
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struct vmw_surface *srf;
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int ret;
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struct vmw_resource *res;
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if (*sid == SVGA3D_INVALID_ID)
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return 0;
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if (likely((sw_context->sid_valid &&
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*sid == sw_context->last_sid))) {
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*sid = sw_context->sid_translation;
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return 0;
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}
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ret = vmw_user_surface_lookup_handle(dev_priv,
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sw_context->tfile,
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*sid, &srf);
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if (unlikely(ret != 0)) {
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DRM_ERROR("Could ot find or use surface 0x%08x "
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"address 0x%08lx\n",
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(unsigned int) *sid,
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(unsigned long) sid);
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return ret;
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}
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ret = vmw_surface_validate(dev_priv, srf);
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if (unlikely(ret != 0)) {
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if (ret != -ERESTARTSYS)
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DRM_ERROR("Could not validate surface.\n");
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vmw_surface_unreference(&srf);
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return ret;
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}
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sw_context->last_sid = *sid;
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sw_context->sid_valid = true;
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sw_context->sid_translation = srf->res.id;
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*sid = sw_context->sid_translation;
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res = &srf->res;
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vmw_resource_to_validate_list(sw_context, &res);
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return 0;
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}
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static int vmw_cmd_set_render_target_check(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context,
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SVGA3dCmdHeader *header)
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{
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struct vmw_sid_cmd {
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SVGA3dCmdHeader header;
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SVGA3dCmdSetRenderTarget body;
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} *cmd;
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int ret;
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ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
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if (unlikely(ret != 0))
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return ret;
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cmd = container_of(header, struct vmw_sid_cmd, header);
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ret = vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.target.sid);
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return ret;
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}
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static int vmw_cmd_surface_copy_check(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context,
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SVGA3dCmdHeader *header)
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{
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struct vmw_sid_cmd {
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SVGA3dCmdHeader header;
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SVGA3dCmdSurfaceCopy body;
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} *cmd;
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int ret;
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cmd = container_of(header, struct vmw_sid_cmd, header);
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ret = vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.src.sid);
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if (unlikely(ret != 0))
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return ret;
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return vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.dest.sid);
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}
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static int vmw_cmd_stretch_blt_check(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context,
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SVGA3dCmdHeader *header)
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{
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struct vmw_sid_cmd {
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SVGA3dCmdHeader header;
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SVGA3dCmdSurfaceStretchBlt body;
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} *cmd;
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int ret;
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cmd = container_of(header, struct vmw_sid_cmd, header);
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ret = vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.src.sid);
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if (unlikely(ret != 0))
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return ret;
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return vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.dest.sid);
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}
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static int vmw_cmd_blt_surf_screen_check(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context,
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SVGA3dCmdHeader *header)
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{
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struct vmw_sid_cmd {
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SVGA3dCmdHeader header;
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SVGA3dCmdBlitSurfaceToScreen body;
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} *cmd;
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cmd = container_of(header, struct vmw_sid_cmd, header);
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if (unlikely(!sw_context->kernel)) {
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DRM_ERROR("Kernel only SVGA3d command: %u.\n", cmd->header.id);
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return -EPERM;
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}
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return vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.srcImage.sid);
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}
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static int vmw_cmd_present_check(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context,
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SVGA3dCmdHeader *header)
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{
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struct vmw_sid_cmd {
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SVGA3dCmdHeader header;
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SVGA3dCmdPresent body;
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} *cmd;
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cmd = container_of(header, struct vmw_sid_cmd, header);
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if (unlikely(!sw_context->kernel)) {
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DRM_ERROR("Kernel only SVGA3d command: %u.\n", cmd->header.id);
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return -EPERM;
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}
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return vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.sid);
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}
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/**
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* vmw_query_bo_switch_prepare - Prepare to switch pinned buffer for queries.
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*
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* @dev_priv: The device private structure.
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* @cid: The hardware context for the next query.
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* @new_query_bo: The new buffer holding query results.
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* @sw_context: The software context used for this command submission.
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*
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* This function checks whether @new_query_bo is suitable for holding
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* query results, and if another buffer currently is pinned for query
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* results. If so, the function prepares the state of @sw_context for
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* switching pinned buffers after successful submission of the current
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* command batch. It also checks whether we're using a new query context.
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* In that case, it makes sure we emit a query barrier for the old
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* context before the current query buffer is fenced.
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*/
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static int vmw_query_bo_switch_prepare(struct vmw_private *dev_priv,
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uint32_t cid,
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struct ttm_buffer_object *new_query_bo,
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struct vmw_sw_context *sw_context)
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{
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int ret;
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bool add_cid = false;
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uint32_t cid_to_add;
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if (unlikely(new_query_bo != sw_context->cur_query_bo)) {
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if (unlikely(new_query_bo->num_pages > 4)) {
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DRM_ERROR("Query buffer too large.\n");
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return -EINVAL;
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}
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if (unlikely(sw_context->cur_query_bo != NULL)) {
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BUG_ON(!sw_context->query_cid_valid);
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add_cid = true;
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cid_to_add = sw_context->cur_query_cid;
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ret = vmw_bo_to_validate_list(sw_context,
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sw_context->cur_query_bo,
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NULL);
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if (unlikely(ret != 0))
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return ret;
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}
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sw_context->cur_query_bo = new_query_bo;
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ret = vmw_bo_to_validate_list(sw_context,
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dev_priv->dummy_query_bo,
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NULL);
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if (unlikely(ret != 0))
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return ret;
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}
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if (unlikely(cid != sw_context->cur_query_cid &&
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sw_context->query_cid_valid)) {
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add_cid = true;
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cid_to_add = sw_context->cur_query_cid;
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}
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sw_context->cur_query_cid = cid;
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sw_context->query_cid_valid = true;
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if (add_cid) {
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struct vmw_resource *ctx = sw_context->cur_ctx;
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if (list_empty(&ctx->query_head))
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list_add_tail(&ctx->query_head,
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&sw_context->query_list);
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ret = vmw_bo_to_validate_list(sw_context,
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dev_priv->dummy_query_bo,
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NULL);
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if (unlikely(ret != 0))
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return ret;
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}
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return 0;
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}
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/**
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* vmw_query_bo_switch_commit - Finalize switching pinned query buffer
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*
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* @dev_priv: The device private structure.
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* @sw_context: The software context used for this command submission batch.
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*
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* This function will check if we're switching query buffers, and will then,
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* if no other query waits are issued this command submission batch,
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* issue a dummy occlusion query wait used as a query barrier. When the fence
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* object following that query wait has signaled, we are sure that all
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* preseding queries have finished, and the old query buffer can be unpinned.
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* However, since both the new query buffer and the old one are fenced with
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* that fence, we can do an asynchronus unpin now, and be sure that the
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* old query buffer won't be moved until the fence has signaled.
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*
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* As mentioned above, both the new - and old query buffers need to be fenced
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* using a sequence emitted *after* calling this function.
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*/
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static void vmw_query_bo_switch_commit(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context)
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{
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struct vmw_resource *ctx, *next_ctx;
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int ret;
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/*
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* The validate list should still hold references to all
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* contexts here.
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*/
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list_for_each_entry_safe(ctx, next_ctx, &sw_context->query_list,
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query_head) {
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list_del_init(&ctx->query_head);
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BUG_ON(list_empty(&ctx->validate_head));
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ret = vmw_fifo_emit_dummy_query(dev_priv, ctx->id);
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if (unlikely(ret != 0))
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DRM_ERROR("Out of fifo space for dummy query.\n");
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}
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if (dev_priv->pinned_bo != sw_context->cur_query_bo) {
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if (dev_priv->pinned_bo) {
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vmw_bo_pin(dev_priv->pinned_bo, false);
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ttm_bo_unref(&dev_priv->pinned_bo);
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}
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vmw_bo_pin(sw_context->cur_query_bo, true);
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/*
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* We pin also the dummy_query_bo buffer so that we
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* don't need to validate it when emitting
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* dummy queries in context destroy paths.
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*/
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vmw_bo_pin(dev_priv->dummy_query_bo, true);
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dev_priv->dummy_query_bo_pinned = true;
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dev_priv->query_cid = sw_context->cur_query_cid;
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dev_priv->pinned_bo =
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ttm_bo_reference(sw_context->cur_query_bo);
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}
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}
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/**
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* vmw_query_switch_backoff - clear query barrier list
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* @sw_context: The sw context used for this submission batch.
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*
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* This function is used as part of an error path, where a previously
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* set up list of query barriers needs to be cleared.
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*
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*/
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static void vmw_query_switch_backoff(struct vmw_sw_context *sw_context)
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{
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struct list_head *list, *next;
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list_for_each_safe(list, next, &sw_context->query_list) {
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list_del_init(list);
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}
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}
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static int vmw_translate_guest_ptr(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context,
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SVGAGuestPtr *ptr,
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struct vmw_dma_buffer **vmw_bo_p)
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{
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struct vmw_dma_buffer *vmw_bo = NULL;
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struct ttm_buffer_object *bo;
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uint32_t handle = ptr->gmrId;
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struct vmw_relocation *reloc;
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int ret;
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ret = vmw_user_dmabuf_lookup(sw_context->tfile, handle, &vmw_bo);
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if (unlikely(ret != 0)) {
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DRM_ERROR("Could not find or use GMR region.\n");
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return -EINVAL;
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}
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bo = &vmw_bo->base;
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if (unlikely(sw_context->cur_reloc >= VMWGFX_MAX_RELOCATIONS)) {
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DRM_ERROR("Max number relocations per submission"
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" exceeded\n");
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ret = -EINVAL;
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goto out_no_reloc;
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}
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reloc = &sw_context->relocs[sw_context->cur_reloc++];
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reloc->location = ptr;
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ret = vmw_bo_to_validate_list(sw_context, bo, &reloc->index);
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if (unlikely(ret != 0))
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goto out_no_reloc;
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*vmw_bo_p = vmw_bo;
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return 0;
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out_no_reloc:
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vmw_dmabuf_unreference(&vmw_bo);
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vmw_bo_p = NULL;
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return ret;
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}
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static int vmw_cmd_end_query(struct vmw_private *dev_priv,
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struct vmw_sw_context *sw_context,
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SVGA3dCmdHeader *header)
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{
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struct vmw_dma_buffer *vmw_bo;
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struct vmw_query_cmd {
|
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SVGA3dCmdHeader header;
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SVGA3dCmdEndQuery q;
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} *cmd;
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int ret;
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cmd = container_of(header, struct vmw_query_cmd, header);
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ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
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if (unlikely(ret != 0))
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return ret;
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ret = vmw_translate_guest_ptr(dev_priv, sw_context,
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&cmd->q.guestResult,
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&vmw_bo);
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if (unlikely(ret != 0))
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return ret;
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ret = vmw_query_bo_switch_prepare(dev_priv, cmd->q.cid,
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&vmw_bo->base, sw_context);
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vmw_dmabuf_unreference(&vmw_bo);
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return ret;
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}
|
|
|
|
static int vmw_cmd_wait_query(struct vmw_private *dev_priv,
|
|
struct vmw_sw_context *sw_context,
|
|
SVGA3dCmdHeader *header)
|
|
{
|
|
struct vmw_dma_buffer *vmw_bo;
|
|
struct vmw_query_cmd {
|
|
SVGA3dCmdHeader header;
|
|
SVGA3dCmdWaitForQuery q;
|
|
} *cmd;
|
|
int ret;
|
|
struct vmw_resource *ctx;
|
|
|
|
cmd = container_of(header, struct vmw_query_cmd, header);
|
|
ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
ret = vmw_translate_guest_ptr(dev_priv, sw_context,
|
|
&cmd->q.guestResult,
|
|
&vmw_bo);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
vmw_dmabuf_unreference(&vmw_bo);
|
|
|
|
/*
|
|
* This wait will act as a barrier for previous waits for this
|
|
* context.
|
|
*/
|
|
|
|
ctx = sw_context->cur_ctx;
|
|
if (!list_empty(&ctx->query_head))
|
|
list_del_init(&ctx->query_head);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vmw_cmd_dma(struct vmw_private *dev_priv,
|
|
struct vmw_sw_context *sw_context,
|
|
SVGA3dCmdHeader *header)
|
|
{
|
|
struct vmw_dma_buffer *vmw_bo = NULL;
|
|
struct ttm_buffer_object *bo;
|
|
struct vmw_surface *srf = NULL;
|
|
struct vmw_dma_cmd {
|
|
SVGA3dCmdHeader header;
|
|
SVGA3dCmdSurfaceDMA dma;
|
|
} *cmd;
|
|
int ret;
|
|
struct vmw_resource *res;
|
|
|
|
cmd = container_of(header, struct vmw_dma_cmd, header);
|
|
ret = vmw_translate_guest_ptr(dev_priv, sw_context,
|
|
&cmd->dma.guest.ptr,
|
|
&vmw_bo);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
bo = &vmw_bo->base;
|
|
ret = vmw_user_surface_lookup_handle(dev_priv, sw_context->tfile,
|
|
cmd->dma.host.sid, &srf);
|
|
if (ret) {
|
|
DRM_ERROR("could not find surface\n");
|
|
goto out_no_reloc;
|
|
}
|
|
|
|
ret = vmw_surface_validate(dev_priv, srf);
|
|
if (unlikely(ret != 0)) {
|
|
if (ret != -ERESTARTSYS)
|
|
DRM_ERROR("Culd not validate surface.\n");
|
|
goto out_no_validate;
|
|
}
|
|
|
|
/*
|
|
* Patch command stream with device SID.
|
|
*/
|
|
cmd->dma.host.sid = srf->res.id;
|
|
vmw_kms_cursor_snoop(srf, sw_context->tfile, bo, header);
|
|
|
|
vmw_dmabuf_unreference(&vmw_bo);
|
|
|
|
res = &srf->res;
|
|
vmw_resource_to_validate_list(sw_context, &res);
|
|
|
|
return 0;
|
|
|
|
out_no_validate:
|
|
vmw_surface_unreference(&srf);
|
|
out_no_reloc:
|
|
vmw_dmabuf_unreference(&vmw_bo);
|
|
return ret;
|
|
}
|
|
|
|
static int vmw_cmd_draw(struct vmw_private *dev_priv,
|
|
struct vmw_sw_context *sw_context,
|
|
SVGA3dCmdHeader *header)
|
|
{
|
|
struct vmw_draw_cmd {
|
|
SVGA3dCmdHeader header;
|
|
SVGA3dCmdDrawPrimitives body;
|
|
} *cmd;
|
|
SVGA3dVertexDecl *decl = (SVGA3dVertexDecl *)(
|
|
(unsigned long)header + sizeof(*cmd));
|
|
SVGA3dPrimitiveRange *range;
|
|
uint32_t i;
|
|
uint32_t maxnum;
|
|
int ret;
|
|
|
|
ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
cmd = container_of(header, struct vmw_draw_cmd, header);
|
|
maxnum = (header->size - sizeof(cmd->body)) / sizeof(*decl);
|
|
|
|
if (unlikely(cmd->body.numVertexDecls > maxnum)) {
|
|
DRM_ERROR("Illegal number of vertex declarations.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
for (i = 0; i < cmd->body.numVertexDecls; ++i, ++decl) {
|
|
ret = vmw_cmd_sid_check(dev_priv, sw_context,
|
|
&decl->array.surfaceId);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
}
|
|
|
|
maxnum = (header->size - sizeof(cmd->body) -
|
|
cmd->body.numVertexDecls * sizeof(*decl)) / sizeof(*range);
|
|
if (unlikely(cmd->body.numRanges > maxnum)) {
|
|
DRM_ERROR("Illegal number of index ranges.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
range = (SVGA3dPrimitiveRange *) decl;
|
|
for (i = 0; i < cmd->body.numRanges; ++i, ++range) {
|
|
ret = vmw_cmd_sid_check(dev_priv, sw_context,
|
|
&range->indexArray.surfaceId);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int vmw_cmd_tex_state(struct vmw_private *dev_priv,
|
|
struct vmw_sw_context *sw_context,
|
|
SVGA3dCmdHeader *header)
|
|
{
|
|
struct vmw_tex_state_cmd {
|
|
SVGA3dCmdHeader header;
|
|
SVGA3dCmdSetTextureState state;
|
|
};
|
|
|
|
SVGA3dTextureState *last_state = (SVGA3dTextureState *)
|
|
((unsigned long) header + header->size + sizeof(header));
|
|
SVGA3dTextureState *cur_state = (SVGA3dTextureState *)
|
|
((unsigned long) header + sizeof(struct vmw_tex_state_cmd));
|
|
int ret;
|
|
|
|
ret = vmw_cmd_cid_check(dev_priv, sw_context, header);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
for (; cur_state < last_state; ++cur_state) {
|
|
if (likely(cur_state->name != SVGA3D_TS_BIND_TEXTURE))
|
|
continue;
|
|
|
|
ret = vmw_cmd_sid_check(dev_priv, sw_context,
|
|
&cur_state->value);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int vmw_cmd_check_define_gmrfb(struct vmw_private *dev_priv,
|
|
struct vmw_sw_context *sw_context,
|
|
void *buf)
|
|
{
|
|
struct vmw_dma_buffer *vmw_bo;
|
|
int ret;
|
|
|
|
struct {
|
|
uint32_t header;
|
|
SVGAFifoCmdDefineGMRFB body;
|
|
} *cmd = buf;
|
|
|
|
ret = vmw_translate_guest_ptr(dev_priv, sw_context,
|
|
&cmd->body.ptr,
|
|
&vmw_bo);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
vmw_dmabuf_unreference(&vmw_bo);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int vmw_cmd_check_not_3d(struct vmw_private *dev_priv,
|
|
struct vmw_sw_context *sw_context,
|
|
void *buf, uint32_t *size)
|
|
{
|
|
uint32_t size_remaining = *size;
|
|
uint32_t cmd_id;
|
|
|
|
cmd_id = le32_to_cpu(((uint32_t *)buf)[0]);
|
|
switch (cmd_id) {
|
|
case SVGA_CMD_UPDATE:
|
|
*size = sizeof(uint32_t) + sizeof(SVGAFifoCmdUpdate);
|
|
break;
|
|
case SVGA_CMD_DEFINE_GMRFB:
|
|
*size = sizeof(uint32_t) + sizeof(SVGAFifoCmdDefineGMRFB);
|
|
break;
|
|
case SVGA_CMD_BLIT_GMRFB_TO_SCREEN:
|
|
*size = sizeof(uint32_t) + sizeof(SVGAFifoCmdBlitGMRFBToScreen);
|
|
break;
|
|
case SVGA_CMD_BLIT_SCREEN_TO_GMRFB:
|
|
*size = sizeof(uint32_t) + sizeof(SVGAFifoCmdBlitGMRFBToScreen);
|
|
break;
|
|
default:
|
|
DRM_ERROR("Unsupported SVGA command: %u.\n", cmd_id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (*size > size_remaining) {
|
|
DRM_ERROR("Invalid SVGA command (size mismatch):"
|
|
" %u.\n", cmd_id);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (unlikely(!sw_context->kernel)) {
|
|
DRM_ERROR("Kernel only SVGA command: %u.\n", cmd_id);
|
|
return -EPERM;
|
|
}
|
|
|
|
if (cmd_id == SVGA_CMD_DEFINE_GMRFB)
|
|
return vmw_cmd_check_define_gmrfb(dev_priv, sw_context, buf);
|
|
|
|
return 0;
|
|
}
|
|
|
|
typedef int (*vmw_cmd_func) (struct vmw_private *,
|
|
struct vmw_sw_context *,
|
|
SVGA3dCmdHeader *);
|
|
|
|
#define VMW_CMD_DEF(cmd, func) \
|
|
[cmd - SVGA_3D_CMD_BASE] = func
|
|
|
|
static vmw_cmd_func vmw_cmd_funcs[SVGA_3D_CMD_MAX] = {
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DEFINE, &vmw_cmd_invalid),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DESTROY, &vmw_cmd_invalid),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_COPY, &vmw_cmd_surface_copy_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_STRETCHBLT, &vmw_cmd_stretch_blt_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DMA, &vmw_cmd_dma),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_CONTEXT_DEFINE, &vmw_cmd_invalid),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_CONTEXT_DESTROY, &vmw_cmd_invalid),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SETTRANSFORM, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SETZRANGE, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SETRENDERSTATE, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SETRENDERTARGET,
|
|
&vmw_cmd_set_render_target_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SETTEXTURESTATE, &vmw_cmd_tex_state),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SETMATERIAL, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SETLIGHTDATA, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SETLIGHTENABLED, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SETVIEWPORT, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SETCLIPPLANE, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_CLEAR, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_PRESENT, &vmw_cmd_present_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DEFINE, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DESTROY, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER_CONST, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_DRAW_PRIMITIVES, &vmw_cmd_draw),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_SETSCISSORRECT, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_BEGIN_QUERY, &vmw_cmd_cid_check),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_END_QUERY, &vmw_cmd_end_query),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_WAIT_FOR_QUERY, &vmw_cmd_wait_query),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_PRESENT_READBACK, &vmw_cmd_ok),
|
|
VMW_CMD_DEF(SVGA_3D_CMD_BLIT_SURFACE_TO_SCREEN,
|
|
&vmw_cmd_blt_surf_screen_check)
|
|
};
|
|
|
|
static int vmw_cmd_check(struct vmw_private *dev_priv,
|
|
struct vmw_sw_context *sw_context,
|
|
void *buf, uint32_t *size)
|
|
{
|
|
uint32_t cmd_id;
|
|
uint32_t size_remaining = *size;
|
|
SVGA3dCmdHeader *header = (SVGA3dCmdHeader *) buf;
|
|
int ret;
|
|
|
|
cmd_id = le32_to_cpu(((uint32_t *)buf)[0]);
|
|
/* Handle any none 3D commands */
|
|
if (unlikely(cmd_id < SVGA_CMD_MAX))
|
|
return vmw_cmd_check_not_3d(dev_priv, sw_context, buf, size);
|
|
|
|
|
|
cmd_id = le32_to_cpu(header->id);
|
|
*size = le32_to_cpu(header->size) + sizeof(SVGA3dCmdHeader);
|
|
|
|
cmd_id -= SVGA_3D_CMD_BASE;
|
|
if (unlikely(*size > size_remaining))
|
|
goto out_err;
|
|
|
|
if (unlikely(cmd_id >= SVGA_3D_CMD_MAX - SVGA_3D_CMD_BASE))
|
|
goto out_err;
|
|
|
|
ret = vmw_cmd_funcs[cmd_id](dev_priv, sw_context, header);
|
|
if (unlikely(ret != 0))
|
|
goto out_err;
|
|
|
|
return 0;
|
|
out_err:
|
|
DRM_ERROR("Illegal / Invalid SVGA3D command: %d\n",
|
|
cmd_id + SVGA_3D_CMD_BASE);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int vmw_cmd_check_all(struct vmw_private *dev_priv,
|
|
struct vmw_sw_context *sw_context,
|
|
void *buf,
|
|
uint32_t size)
|
|
{
|
|
int32_t cur_size = size;
|
|
int ret;
|
|
|
|
while (cur_size > 0) {
|
|
size = cur_size;
|
|
ret = vmw_cmd_check(dev_priv, sw_context, buf, &size);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
buf = (void *)((unsigned long) buf + size);
|
|
cur_size -= size;
|
|
}
|
|
|
|
if (unlikely(cur_size != 0)) {
|
|
DRM_ERROR("Command verifier out of sync.\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void vmw_free_relocations(struct vmw_sw_context *sw_context)
|
|
{
|
|
sw_context->cur_reloc = 0;
|
|
}
|
|
|
|
static void vmw_apply_relocations(struct vmw_sw_context *sw_context)
|
|
{
|
|
uint32_t i;
|
|
struct vmw_relocation *reloc;
|
|
struct ttm_validate_buffer *validate;
|
|
struct ttm_buffer_object *bo;
|
|
|
|
for (i = 0; i < sw_context->cur_reloc; ++i) {
|
|
reloc = &sw_context->relocs[i];
|
|
validate = &sw_context->val_bufs[reloc->index];
|
|
bo = validate->bo;
|
|
if (bo->mem.mem_type == TTM_PL_VRAM) {
|
|
reloc->location->offset += bo->offset;
|
|
reloc->location->gmrId = SVGA_GMR_FRAMEBUFFER;
|
|
} else
|
|
reloc->location->gmrId = bo->mem.start;
|
|
}
|
|
vmw_free_relocations(sw_context);
|
|
}
|
|
|
|
static void vmw_clear_validations(struct vmw_sw_context *sw_context)
|
|
{
|
|
struct ttm_validate_buffer *entry, *next;
|
|
struct vmw_resource *res, *res_next;
|
|
|
|
/*
|
|
* Drop references to DMA buffers held during command submission.
|
|
*/
|
|
list_for_each_entry_safe(entry, next, &sw_context->validate_nodes,
|
|
head) {
|
|
list_del(&entry->head);
|
|
vmw_dmabuf_validate_clear(entry->bo);
|
|
ttm_bo_unref(&entry->bo);
|
|
sw_context->cur_val_buf--;
|
|
}
|
|
BUG_ON(sw_context->cur_val_buf != 0);
|
|
|
|
/*
|
|
* Drop references to resources held during command submission.
|
|
*/
|
|
vmw_resource_unreserve(&sw_context->resource_list);
|
|
list_for_each_entry_safe(res, res_next, &sw_context->resource_list,
|
|
validate_head) {
|
|
list_del_init(&res->validate_head);
|
|
vmw_resource_unreference(&res);
|
|
}
|
|
}
|
|
|
|
static int vmw_validate_single_buffer(struct vmw_private *dev_priv,
|
|
struct ttm_buffer_object *bo)
|
|
{
|
|
int ret;
|
|
|
|
|
|
/*
|
|
* Don't validate pinned buffers.
|
|
*/
|
|
|
|
if (bo == dev_priv->pinned_bo ||
|
|
(bo == dev_priv->dummy_query_bo &&
|
|
dev_priv->dummy_query_bo_pinned))
|
|
return 0;
|
|
|
|
/**
|
|
* Put BO in VRAM if there is space, otherwise as a GMR.
|
|
* If there is no space in VRAM and GMR ids are all used up,
|
|
* start evicting GMRs to make room. If the DMA buffer can't be
|
|
* used as a GMR, this will return -ENOMEM.
|
|
*/
|
|
|
|
ret = ttm_bo_validate(bo, &vmw_vram_gmr_placement, true, false, false);
|
|
if (likely(ret == 0 || ret == -ERESTARTSYS))
|
|
return ret;
|
|
|
|
/**
|
|
* If that failed, try VRAM again, this time evicting
|
|
* previous contents.
|
|
*/
|
|
|
|
DRM_INFO("Falling through to VRAM.\n");
|
|
ret = ttm_bo_validate(bo, &vmw_vram_placement, true, false, false);
|
|
return ret;
|
|
}
|
|
|
|
|
|
static int vmw_validate_buffers(struct vmw_private *dev_priv,
|
|
struct vmw_sw_context *sw_context)
|
|
{
|
|
struct ttm_validate_buffer *entry;
|
|
int ret;
|
|
|
|
list_for_each_entry(entry, &sw_context->validate_nodes, head) {
|
|
ret = vmw_validate_single_buffer(dev_priv, entry->bo);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int vmw_resize_cmd_bounce(struct vmw_sw_context *sw_context,
|
|
uint32_t size)
|
|
{
|
|
if (likely(sw_context->cmd_bounce_size >= size))
|
|
return 0;
|
|
|
|
if (sw_context->cmd_bounce_size == 0)
|
|
sw_context->cmd_bounce_size = VMWGFX_CMD_BOUNCE_INIT_SIZE;
|
|
|
|
while (sw_context->cmd_bounce_size < size) {
|
|
sw_context->cmd_bounce_size =
|
|
PAGE_ALIGN(sw_context->cmd_bounce_size +
|
|
(sw_context->cmd_bounce_size >> 1));
|
|
}
|
|
|
|
if (sw_context->cmd_bounce != NULL)
|
|
vfree(sw_context->cmd_bounce);
|
|
|
|
sw_context->cmd_bounce = vmalloc(sw_context->cmd_bounce_size);
|
|
|
|
if (sw_context->cmd_bounce == NULL) {
|
|
DRM_ERROR("Failed to allocate command bounce buffer.\n");
|
|
sw_context->cmd_bounce_size = 0;
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vmw_execbuf_fence_commands - create and submit a command stream fence
|
|
*
|
|
* Creates a fence object and submits a command stream marker.
|
|
* If this fails for some reason, We sync the fifo and return NULL.
|
|
* It is then safe to fence buffers with a NULL pointer.
|
|
*
|
|
* If @p_handle is not NULL @file_priv must also not be NULL. Creates
|
|
* a userspace handle if @p_handle is not NULL, otherwise not.
|
|
*/
|
|
|
|
int vmw_execbuf_fence_commands(struct drm_file *file_priv,
|
|
struct vmw_private *dev_priv,
|
|
struct vmw_fence_obj **p_fence,
|
|
uint32_t *p_handle)
|
|
{
|
|
uint32_t sequence;
|
|
int ret;
|
|
bool synced = false;
|
|
|
|
/* p_handle implies file_priv. */
|
|
BUG_ON(p_handle != NULL && file_priv == NULL);
|
|
|
|
ret = vmw_fifo_send_fence(dev_priv, &sequence);
|
|
if (unlikely(ret != 0)) {
|
|
DRM_ERROR("Fence submission error. Syncing.\n");
|
|
synced = true;
|
|
}
|
|
|
|
if (p_handle != NULL)
|
|
ret = vmw_user_fence_create(file_priv, dev_priv->fman,
|
|
sequence,
|
|
DRM_VMW_FENCE_FLAG_EXEC,
|
|
p_fence, p_handle);
|
|
else
|
|
ret = vmw_fence_create(dev_priv->fman, sequence,
|
|
DRM_VMW_FENCE_FLAG_EXEC,
|
|
p_fence);
|
|
|
|
if (unlikely(ret != 0 && !synced)) {
|
|
(void) vmw_fallback_wait(dev_priv, false, false,
|
|
sequence, false,
|
|
VMW_FENCE_WAIT_TIMEOUT);
|
|
*p_fence = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* vmw_execbuf_copy_fence_user - copy fence object information to
|
|
* user-space.
|
|
*
|
|
* @dev_priv: Pointer to a vmw_private struct.
|
|
* @vmw_fp: Pointer to the struct vmw_fpriv representing the calling file.
|
|
* @ret: Return value from fence object creation.
|
|
* @user_fence_rep: User space address of a struct drm_vmw_fence_rep to
|
|
* which the information should be copied.
|
|
* @fence: Pointer to the fenc object.
|
|
* @fence_handle: User-space fence handle.
|
|
*
|
|
* This function copies fence information to user-space. If copying fails,
|
|
* The user-space struct drm_vmw_fence_rep::error member is hopefully
|
|
* left untouched, and if it's preloaded with an -EFAULT by user-space,
|
|
* the error will hopefully be detected.
|
|
* Also if copying fails, user-space will be unable to signal the fence
|
|
* object so we wait for it immediately, and then unreference the
|
|
* user-space reference.
|
|
*/
|
|
void
|
|
vmw_execbuf_copy_fence_user(struct vmw_private *dev_priv,
|
|
struct vmw_fpriv *vmw_fp,
|
|
int ret,
|
|
struct drm_vmw_fence_rep __user *user_fence_rep,
|
|
struct vmw_fence_obj *fence,
|
|
uint32_t fence_handle)
|
|
{
|
|
struct drm_vmw_fence_rep fence_rep;
|
|
|
|
if (user_fence_rep == NULL)
|
|
return;
|
|
|
|
memset(&fence_rep, 0, sizeof(fence_rep));
|
|
|
|
fence_rep.error = ret;
|
|
if (ret == 0) {
|
|
BUG_ON(fence == NULL);
|
|
|
|
fence_rep.handle = fence_handle;
|
|
fence_rep.seqno = fence->seqno;
|
|
vmw_update_seqno(dev_priv, &dev_priv->fifo);
|
|
fence_rep.passed_seqno = dev_priv->last_read_seqno;
|
|
}
|
|
|
|
/*
|
|
* copy_to_user errors will be detected by user space not
|
|
* seeing fence_rep::error filled in. Typically
|
|
* user-space would have pre-set that member to -EFAULT.
|
|
*/
|
|
ret = copy_to_user(user_fence_rep, &fence_rep,
|
|
sizeof(fence_rep));
|
|
|
|
/*
|
|
* User-space lost the fence object. We need to sync
|
|
* and unreference the handle.
|
|
*/
|
|
if (unlikely(ret != 0) && (fence_rep.error == 0)) {
|
|
ttm_ref_object_base_unref(vmw_fp->tfile,
|
|
fence_handle, TTM_REF_USAGE);
|
|
DRM_ERROR("Fence copy error. Syncing.\n");
|
|
(void) vmw_fence_obj_wait(fence, fence->signal_mask,
|
|
false, false,
|
|
VMW_FENCE_WAIT_TIMEOUT);
|
|
}
|
|
}
|
|
|
|
int vmw_execbuf_process(struct drm_file *file_priv,
|
|
struct vmw_private *dev_priv,
|
|
void __user *user_commands,
|
|
void *kernel_commands,
|
|
uint32_t command_size,
|
|
uint64_t throttle_us,
|
|
struct drm_vmw_fence_rep __user *user_fence_rep,
|
|
struct vmw_fence_obj **out_fence)
|
|
{
|
|
struct vmw_sw_context *sw_context = &dev_priv->ctx;
|
|
struct vmw_fence_obj *fence = NULL;
|
|
uint32_t handle;
|
|
void *cmd;
|
|
int ret;
|
|
|
|
ret = mutex_lock_interruptible(&dev_priv->cmdbuf_mutex);
|
|
if (unlikely(ret != 0))
|
|
return -ERESTARTSYS;
|
|
|
|
if (kernel_commands == NULL) {
|
|
sw_context->kernel = false;
|
|
|
|
ret = vmw_resize_cmd_bounce(sw_context, command_size);
|
|
if (unlikely(ret != 0))
|
|
goto out_unlock;
|
|
|
|
|
|
ret = copy_from_user(sw_context->cmd_bounce,
|
|
user_commands, command_size);
|
|
|
|
if (unlikely(ret != 0)) {
|
|
ret = -EFAULT;
|
|
DRM_ERROR("Failed copying commands.\n");
|
|
goto out_unlock;
|
|
}
|
|
kernel_commands = sw_context->cmd_bounce;
|
|
} else
|
|
sw_context->kernel = true;
|
|
|
|
sw_context->tfile = vmw_fpriv(file_priv)->tfile;
|
|
sw_context->cid_valid = false;
|
|
sw_context->sid_valid = false;
|
|
sw_context->cur_reloc = 0;
|
|
sw_context->cur_val_buf = 0;
|
|
sw_context->fence_flags = 0;
|
|
INIT_LIST_HEAD(&sw_context->query_list);
|
|
INIT_LIST_HEAD(&sw_context->resource_list);
|
|
sw_context->cur_query_bo = dev_priv->pinned_bo;
|
|
sw_context->cur_query_cid = dev_priv->query_cid;
|
|
sw_context->query_cid_valid = (dev_priv->pinned_bo != NULL);
|
|
|
|
INIT_LIST_HEAD(&sw_context->validate_nodes);
|
|
|
|
ret = vmw_cmd_check_all(dev_priv, sw_context, kernel_commands,
|
|
command_size);
|
|
if (unlikely(ret != 0))
|
|
goto out_err;
|
|
|
|
ret = ttm_eu_reserve_buffers(&sw_context->validate_nodes);
|
|
if (unlikely(ret != 0))
|
|
goto out_err;
|
|
|
|
ret = vmw_validate_buffers(dev_priv, sw_context);
|
|
if (unlikely(ret != 0))
|
|
goto out_err;
|
|
|
|
vmw_apply_relocations(sw_context);
|
|
|
|
if (throttle_us) {
|
|
ret = vmw_wait_lag(dev_priv, &dev_priv->fifo.marker_queue,
|
|
throttle_us);
|
|
|
|
if (unlikely(ret != 0))
|
|
goto out_throttle;
|
|
}
|
|
|
|
cmd = vmw_fifo_reserve(dev_priv, command_size);
|
|
if (unlikely(cmd == NULL)) {
|
|
DRM_ERROR("Failed reserving fifo space for commands.\n");
|
|
ret = -ENOMEM;
|
|
goto out_throttle;
|
|
}
|
|
|
|
memcpy(cmd, kernel_commands, command_size);
|
|
vmw_fifo_commit(dev_priv, command_size);
|
|
|
|
vmw_query_bo_switch_commit(dev_priv, sw_context);
|
|
ret = vmw_execbuf_fence_commands(file_priv, dev_priv,
|
|
&fence,
|
|
(user_fence_rep) ? &handle : NULL);
|
|
/*
|
|
* This error is harmless, because if fence submission fails,
|
|
* vmw_fifo_send_fence will sync. The error will be propagated to
|
|
* user-space in @fence_rep
|
|
*/
|
|
|
|
if (ret != 0)
|
|
DRM_ERROR("Fence submission error. Syncing.\n");
|
|
|
|
ttm_eu_fence_buffer_objects(&sw_context->validate_nodes,
|
|
(void *) fence);
|
|
|
|
vmw_clear_validations(sw_context);
|
|
vmw_execbuf_copy_fence_user(dev_priv, vmw_fpriv(file_priv), ret,
|
|
user_fence_rep, fence, handle);
|
|
|
|
/* Don't unreference when handing fence out */
|
|
if (unlikely(out_fence != NULL)) {
|
|
*out_fence = fence;
|
|
fence = NULL;
|
|
} else if (likely(fence != NULL)) {
|
|
vmw_fence_obj_unreference(&fence);
|
|
}
|
|
|
|
mutex_unlock(&dev_priv->cmdbuf_mutex);
|
|
return 0;
|
|
|
|
out_err:
|
|
vmw_free_relocations(sw_context);
|
|
out_throttle:
|
|
vmw_query_switch_backoff(sw_context);
|
|
ttm_eu_backoff_reservation(&sw_context->validate_nodes);
|
|
vmw_clear_validations(sw_context);
|
|
out_unlock:
|
|
mutex_unlock(&dev_priv->cmdbuf_mutex);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* vmw_execbuf_unpin_panic - Idle the fifo and unpin the query buffer.
|
|
*
|
|
* @dev_priv: The device private structure.
|
|
*
|
|
* This function is called to idle the fifo and unpin the query buffer
|
|
* if the normal way to do this hits an error, which should typically be
|
|
* extremely rare.
|
|
*/
|
|
static void vmw_execbuf_unpin_panic(struct vmw_private *dev_priv)
|
|
{
|
|
DRM_ERROR("Can't unpin query buffer. Trying to recover.\n");
|
|
|
|
(void) vmw_fallback_wait(dev_priv, false, true, 0, false, 10*HZ);
|
|
vmw_bo_pin(dev_priv->pinned_bo, false);
|
|
vmw_bo_pin(dev_priv->dummy_query_bo, false);
|
|
dev_priv->dummy_query_bo_pinned = false;
|
|
}
|
|
|
|
|
|
/**
|
|
* vmw_execbuf_release_pinned_bo - Flush queries and unpin the pinned
|
|
* query bo.
|
|
*
|
|
* @dev_priv: The device private structure.
|
|
* @only_on_cid_match: Only flush and unpin if the current active query cid
|
|
* matches @cid.
|
|
* @cid: Optional context id to match.
|
|
*
|
|
* This function should be used to unpin the pinned query bo, or
|
|
* as a query barrier when we need to make sure that all queries have
|
|
* finished before the next fifo command. (For example on hardware
|
|
* context destructions where the hardware may otherwise leak unfinished
|
|
* queries).
|
|
*
|
|
* This function does not return any failure codes, but make attempts
|
|
* to do safe unpinning in case of errors.
|
|
*
|
|
* The function will synchronize on the previous query barrier, and will
|
|
* thus not finish until that barrier has executed.
|
|
*/
|
|
void vmw_execbuf_release_pinned_bo(struct vmw_private *dev_priv,
|
|
bool only_on_cid_match, uint32_t cid)
|
|
{
|
|
int ret = 0;
|
|
struct list_head validate_list;
|
|
struct ttm_validate_buffer pinned_val, query_val;
|
|
struct vmw_fence_obj *fence;
|
|
|
|
mutex_lock(&dev_priv->cmdbuf_mutex);
|
|
|
|
if (dev_priv->pinned_bo == NULL)
|
|
goto out_unlock;
|
|
|
|
if (only_on_cid_match && cid != dev_priv->query_cid)
|
|
goto out_unlock;
|
|
|
|
INIT_LIST_HEAD(&validate_list);
|
|
|
|
pinned_val.bo = ttm_bo_reference(dev_priv->pinned_bo);
|
|
list_add_tail(&pinned_val.head, &validate_list);
|
|
|
|
query_val.bo = ttm_bo_reference(dev_priv->dummy_query_bo);
|
|
list_add_tail(&query_val.head, &validate_list);
|
|
|
|
do {
|
|
ret = ttm_eu_reserve_buffers(&validate_list);
|
|
} while (ret == -ERESTARTSYS);
|
|
|
|
if (unlikely(ret != 0)) {
|
|
vmw_execbuf_unpin_panic(dev_priv);
|
|
goto out_no_reserve;
|
|
}
|
|
|
|
ret = vmw_fifo_emit_dummy_query(dev_priv, dev_priv->query_cid);
|
|
if (unlikely(ret != 0)) {
|
|
vmw_execbuf_unpin_panic(dev_priv);
|
|
goto out_no_emit;
|
|
}
|
|
|
|
vmw_bo_pin(dev_priv->pinned_bo, false);
|
|
vmw_bo_pin(dev_priv->dummy_query_bo, false);
|
|
dev_priv->dummy_query_bo_pinned = false;
|
|
|
|
(void) vmw_execbuf_fence_commands(NULL, dev_priv, &fence, NULL);
|
|
ttm_eu_fence_buffer_objects(&validate_list, (void *) fence);
|
|
|
|
ttm_bo_unref(&query_val.bo);
|
|
ttm_bo_unref(&pinned_val.bo);
|
|
ttm_bo_unref(&dev_priv->pinned_bo);
|
|
|
|
out_unlock:
|
|
mutex_unlock(&dev_priv->cmdbuf_mutex);
|
|
return;
|
|
|
|
out_no_emit:
|
|
ttm_eu_backoff_reservation(&validate_list);
|
|
out_no_reserve:
|
|
ttm_bo_unref(&query_val.bo);
|
|
ttm_bo_unref(&pinned_val.bo);
|
|
ttm_bo_unref(&dev_priv->pinned_bo);
|
|
mutex_unlock(&dev_priv->cmdbuf_mutex);
|
|
}
|
|
|
|
|
|
int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct vmw_private *dev_priv = vmw_priv(dev);
|
|
struct drm_vmw_execbuf_arg *arg = (struct drm_vmw_execbuf_arg *)data;
|
|
struct vmw_master *vmaster = vmw_master(file_priv->master);
|
|
int ret;
|
|
|
|
/*
|
|
* This will allow us to extend the ioctl argument while
|
|
* maintaining backwards compatibility:
|
|
* We take different code paths depending on the value of
|
|
* arg->version.
|
|
*/
|
|
|
|
if (unlikely(arg->version != DRM_VMW_EXECBUF_VERSION)) {
|
|
DRM_ERROR("Incorrect execbuf version.\n");
|
|
DRM_ERROR("You're running outdated experimental "
|
|
"vmwgfx user-space drivers.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = ttm_read_lock(&vmaster->lock, true);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
ret = vmw_execbuf_process(file_priv, dev_priv,
|
|
(void __user *)(unsigned long)arg->commands,
|
|
NULL, arg->command_size, arg->throttle_us,
|
|
(void __user *)(unsigned long)arg->fence_rep,
|
|
NULL);
|
|
|
|
if (unlikely(ret != 0))
|
|
goto out_unlock;
|
|
|
|
vmw_kms_cursor_post_execbuf(dev_priv);
|
|
|
|
out_unlock:
|
|
ttm_read_unlock(&vmaster->lock);
|
|
return ret;
|
|
}
|