4e4ddd4777
Intercept query commands and apply relocations to their guest pointers. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
716 lines
19 KiB
C
716 lines
19 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 "ttm/ttm_bo_api.h"
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#include "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 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_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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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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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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if (*sid == SVGA3D_INVALID_ID)
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return 0;
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if (unlikely((!sw_context->sid_valid ||
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*sid != sw_context->last_sid))) {
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int real_id;
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int ret = vmw_surface_check(dev_priv, sw_context->tfile,
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*sid, &real_id);
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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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sw_context->last_sid = *sid;
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sw_context->sid_valid = true;
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*sid = real_id;
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sw_context->sid_translation = real_id;
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} else
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*sid = sw_context->sid_translation;
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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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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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return vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.sid);
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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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uint32_t cur_validate_node;
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struct ttm_validate_buffer *val_buf;
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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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cur_validate_node = vmw_dmabuf_validate_node(bo, sw_context->cur_val_buf);
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if (unlikely(cur_validate_node >= VMWGFX_MAX_GMRS)) {
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DRM_ERROR("Max number of DMA buffers 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->index = cur_validate_node;
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if (unlikely(cur_validate_node == sw_context->cur_val_buf)) {
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val_buf = &sw_context->val_bufs[cur_validate_node];
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val_buf->bo = ttm_bo_reference(bo);
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val_buf->new_sync_obj_arg = (void *) dev_priv;
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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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*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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vmw_dmabuf_unreference(&vmw_bo);
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return 0;
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}
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static int vmw_cmd_wait_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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SVGA3dCmdWaitForQuery 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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vmw_dmabuf_unreference(&vmw_bo);
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return 0;
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}
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static int vmw_cmd_dma(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 = NULL;
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struct ttm_buffer_object *bo;
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struct vmw_surface *srf = NULL;
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struct vmw_dma_cmd {
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SVGA3dCmdHeader header;
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SVGA3dCmdSurfaceDMA dma;
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} *cmd;
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int ret;
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cmd = container_of(header, struct vmw_dma_cmd, header);
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ret = vmw_translate_guest_ptr(dev_priv, sw_context,
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&cmd->dma.guest.ptr,
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&vmw_bo);
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if (unlikely(ret != 0))
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return ret;
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bo = &vmw_bo->base;
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ret = vmw_user_surface_lookup_handle(dev_priv, sw_context->tfile,
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cmd->dma.host.sid, &srf);
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if (ret) {
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DRM_ERROR("could not find surface\n");
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goto out_no_reloc;
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}
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/**
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* Patch command stream with device SID.
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*/
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cmd->dma.host.sid = srf->res.id;
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vmw_kms_cursor_snoop(srf, sw_context->tfile, bo, header);
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/**
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* FIXME: May deadlock here when called from the
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* command parsing code.
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*/
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vmw_surface_unreference(&srf);
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out_no_reloc:
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vmw_dmabuf_unreference(&vmw_bo);
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return ret;
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}
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static int vmw_cmd_draw(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_draw_cmd {
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SVGA3dCmdHeader header;
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SVGA3dCmdDrawPrimitives body;
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} *cmd;
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SVGA3dVertexDecl *decl = (SVGA3dVertexDecl *)(
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(unsigned long)header + sizeof(*cmd));
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SVGA3dPrimitiveRange *range;
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uint32_t i;
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uint32_t maxnum;
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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_draw_cmd, header);
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maxnum = (header->size - sizeof(cmd->body)) / sizeof(*decl);
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if (unlikely(cmd->body.numVertexDecls > maxnum)) {
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DRM_ERROR("Illegal number of vertex declarations.\n");
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return -EINVAL;
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}
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for (i = 0; i < cmd->body.numVertexDecls; ++i, ++decl) {
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ret = vmw_cmd_sid_check(dev_priv, sw_context,
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&decl->array.surfaceId);
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if (unlikely(ret != 0))
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return ret;
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}
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maxnum = (header->size - sizeof(cmd->body) -
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cmd->body.numVertexDecls * sizeof(*decl)) / sizeof(*range);
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if (unlikely(cmd->body.numRanges > maxnum)) {
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DRM_ERROR("Illegal number of index ranges.\n");
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return -EINVAL;
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}
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range = (SVGA3dPrimitiveRange *) decl;
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for (i = 0; i < cmd->body.numRanges; ++i, ++range) {
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ret = vmw_cmd_sid_check(dev_priv, sw_context,
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&range->indexArray.surfaceId);
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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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static int vmw_cmd_tex_state(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_tex_state_cmd {
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SVGA3dCmdHeader header;
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SVGA3dCmdSetTextureState state;
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};
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SVGA3dTextureState *last_state = (SVGA3dTextureState *)
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((unsigned long) header + header->size + sizeof(header));
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SVGA3dTextureState *cur_state = (SVGA3dTextureState *)
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((unsigned long) header + sizeof(struct vmw_tex_state_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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for (; cur_state < last_state; ++cur_state) {
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if (likely(cur_state->name != SVGA3D_TS_BIND_TEXTURE))
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continue;
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ret = vmw_cmd_sid_check(dev_priv, sw_context,
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&cur_state->value);
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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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typedef int (*vmw_cmd_func) (struct vmw_private *,
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struct vmw_sw_context *,
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SVGA3dCmdHeader *);
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#define VMW_CMD_DEF(cmd, func) \
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[cmd - SVGA_3D_CMD_BASE] = func
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static vmw_cmd_func vmw_cmd_funcs[SVGA_3D_CMD_MAX] = {
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VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DEFINE, &vmw_cmd_invalid),
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VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DESTROY, &vmw_cmd_invalid),
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VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_COPY, &vmw_cmd_surface_copy_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_STRETCHBLT, &vmw_cmd_stretch_blt_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SURFACE_DMA, &vmw_cmd_dma),
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VMW_CMD_DEF(SVGA_3D_CMD_CONTEXT_DEFINE, &vmw_cmd_invalid),
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VMW_CMD_DEF(SVGA_3D_CMD_CONTEXT_DESTROY, &vmw_cmd_invalid),
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VMW_CMD_DEF(SVGA_3D_CMD_SETTRANSFORM, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SETZRANGE, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SETRENDERSTATE, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SETRENDERTARGET,
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&vmw_cmd_set_render_target_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SETTEXTURESTATE, &vmw_cmd_tex_state),
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VMW_CMD_DEF(SVGA_3D_CMD_SETMATERIAL, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SETLIGHTDATA, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SETLIGHTENABLED, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SETVIEWPORT, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SETCLIPPLANE, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_CLEAR, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_PRESENT, &vmw_cmd_present_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DEFINE, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SHADER_DESTROY, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_SET_SHADER_CONST, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_DRAW_PRIMITIVES, &vmw_cmd_draw),
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VMW_CMD_DEF(SVGA_3D_CMD_SETSCISSORRECT, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_BEGIN_QUERY, &vmw_cmd_cid_check),
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VMW_CMD_DEF(SVGA_3D_CMD_END_QUERY, &vmw_cmd_end_query),
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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 = ((uint32_t *)buf)[0];
|
|
if (cmd_id == SVGA_CMD_UPDATE) {
|
|
*size = 5 << 2;
|
|
return 0;
|
|
}
|
|
|
|
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;
|
|
reloc->location->offset += bo->offset;
|
|
reloc->location->gmrId = vmw_dmabuf_gmr(bo);
|
|
}
|
|
vmw_free_relocations(sw_context);
|
|
}
|
|
|
|
static void vmw_clear_validations(struct vmw_sw_context *sw_context)
|
|
{
|
|
struct ttm_validate_buffer *entry, *next;
|
|
|
|
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);
|
|
}
|
|
|
|
static int vmw_validate_single_buffer(struct vmw_private *dev_priv,
|
|
struct ttm_buffer_object *bo)
|
|
{
|
|
int ret;
|
|
|
|
if (vmw_dmabuf_gmr(bo) != SVGA_GMR_NULL)
|
|
return 0;
|
|
|
|
/**
|
|
* Put BO in VRAM, only if there is space.
|
|
*/
|
|
|
|
ret = ttm_bo_validate(bo, &vmw_vram_sys_placement, true, false);
|
|
if (unlikely(ret == -ERESTARTSYS))
|
|
return ret;
|
|
|
|
/**
|
|
* Otherwise, set it up as GMR.
|
|
*/
|
|
|
|
if (vmw_dmabuf_gmr(bo) != SVGA_GMR_NULL)
|
|
return 0;
|
|
|
|
ret = vmw_gmr_bind(dev_priv, bo);
|
|
if (likely(ret == 0 || ret == -ERESTARTSYS))
|
|
return ret;
|
|
|
|
/**
|
|
* If that failed, try VRAM again, this time evicting
|
|
* previous contents.
|
|
*/
|
|
|
|
ret = ttm_bo_validate(bo, &vmw_vram_placement, true, 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;
|
|
}
|
|
|
|
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 drm_vmw_fence_rep fence_rep;
|
|
struct drm_vmw_fence_rep __user *user_fence_rep;
|
|
int ret;
|
|
void *user_cmd;
|
|
void *cmd;
|
|
uint32_t sequence;
|
|
struct vmw_sw_context *sw_context = &dev_priv->ctx;
|
|
struct vmw_master *vmaster = vmw_master(file_priv->master);
|
|
|
|
ret = ttm_read_lock(&vmaster->lock, true);
|
|
if (unlikely(ret != 0))
|
|
return ret;
|
|
|
|
ret = mutex_lock_interruptible(&dev_priv->cmdbuf_mutex);
|
|
if (unlikely(ret != 0)) {
|
|
ret = -ERESTARTSYS;
|
|
goto out_no_cmd_mutex;
|
|
}
|
|
|
|
cmd = vmw_fifo_reserve(dev_priv, arg->command_size);
|
|
if (unlikely(cmd == NULL)) {
|
|
DRM_ERROR("Failed reserving fifo space for commands.\n");
|
|
ret = -ENOMEM;
|
|
goto out_unlock;
|
|
}
|
|
|
|
user_cmd = (void __user *)(unsigned long)arg->commands;
|
|
ret = copy_from_user(cmd, user_cmd, arg->command_size);
|
|
|
|
if (unlikely(ret != 0)) {
|
|
DRM_ERROR("Failed copying commands.\n");
|
|
goto out_commit;
|
|
}
|
|
|
|
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;
|
|
|
|
INIT_LIST_HEAD(&sw_context->validate_nodes);
|
|
|
|
ret = vmw_cmd_check_all(dev_priv, sw_context, cmd, arg->command_size);
|
|
if (unlikely(ret != 0))
|
|
goto out_err;
|
|
ret = ttm_eu_reserve_buffers(&sw_context->validate_nodes,
|
|
dev_priv->val_seq++);
|
|
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);
|
|
vmw_fifo_commit(dev_priv, arg->command_size);
|
|
|
|
ret = vmw_fifo_send_fence(dev_priv, &sequence);
|
|
|
|
ttm_eu_fence_buffer_objects(&sw_context->validate_nodes,
|
|
(void *)(unsigned long) sequence);
|
|
vmw_clear_validations(sw_context);
|
|
mutex_unlock(&dev_priv->cmdbuf_mutex);
|
|
|
|
/*
|
|
* This error is harmless, because if fence submission fails,
|
|
* vmw_fifo_send_fence will sync.
|
|
*/
|
|
|
|
if (ret != 0)
|
|
DRM_ERROR("Fence submission error. Syncing.\n");
|
|
|
|
fence_rep.error = ret;
|
|
fence_rep.fence_seq = (uint64_t) sequence;
|
|
|
|
user_fence_rep = (struct drm_vmw_fence_rep __user *)
|
|
(unsigned long)arg->fence_rep;
|
|
|
|
/*
|
|
* copy_to_user errors will be detected by user space not
|
|
* seeing fence_rep::error filled in.
|
|
*/
|
|
|
|
ret = copy_to_user(user_fence_rep, &fence_rep, sizeof(fence_rep));
|
|
|
|
vmw_kms_cursor_post_execbuf(dev_priv);
|
|
ttm_read_unlock(&vmaster->lock);
|
|
return 0;
|
|
out_err:
|
|
vmw_free_relocations(sw_context);
|
|
ttm_eu_backoff_reservation(&sw_context->validate_nodes);
|
|
vmw_clear_validations(sw_context);
|
|
out_commit:
|
|
vmw_fifo_commit(dev_priv, 0);
|
|
out_unlock:
|
|
mutex_unlock(&dev_priv->cmdbuf_mutex);
|
|
out_no_cmd_mutex:
|
|
ttm_read_unlock(&vmaster->lock);
|
|
return ret;
|
|
}
|