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drm/vmwgfx: Fix queries if no dma buffer thrashing is occuring. 

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>
This commit is contained in:
Thomas Hellstrom 2010-02-21 14:54:55 +00:00 committed by Dave Airlie
parent f7072e00f0
commit 4e4ddd4777
1 changed files with 92 additions and 16 deletions
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108
drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
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@ -182,25 +182,19 @@ static int vmw_cmd_present_check(struct vmw_private *dev_priv,
return vmw_cmd_sid_check(dev_priv, sw_context, &cmd->body.sid);
}
static int vmw_cmd_dma(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGA3dCmdHeader *header)
static int vmw_translate_guest_ptr(struct vmw_private *dev_priv,
struct vmw_sw_context *sw_context,
SVGAGuestPtr *ptr,
struct vmw_dma_buffer **vmw_bo_p)
{
uint32_t handle;
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;
uint32_t handle = ptr->gmrId;
struct vmw_relocation *reloc;
int ret;
uint32_t cur_validate_node;
struct ttm_validate_buffer *val_buf;
int ret;
cmd = container_of(header, struct vmw_dma_cmd, header);
handle = cmd->dma.guest.ptr.gmrId;
ret = vmw_user_dmabuf_lookup(sw_context->tfile, handle, &vmw_bo);
if (unlikely(ret != 0)) {
DRM_ERROR("Could not find or use GMR region.\n");
@ -209,14 +203,14 @@ static int vmw_cmd_dma(struct vmw_private *dev_priv,
bo = &vmw_bo->base;
if (unlikely(sw_context->cur_reloc >= VMWGFX_MAX_RELOCATIONS)) {
DRM_ERROR("Max number of DMA commands per submission"
DRM_ERROR("Max number relocations per submission"
" exceeded\n");
ret = -EINVAL;
goto out_no_reloc;
}
reloc = &sw_context->relocs[sw_context->cur_reloc++];
reloc->location = &cmd->dma.guest.ptr;
reloc->location = ptr;
cur_validate_node = vmw_dmabuf_validate_node(bo, sw_context->cur_val_buf);
if (unlikely(cur_validate_node >= VMWGFX_MAX_GMRS)) {
@ -234,7 +228,89 @@ static int vmw_cmd_dma(struct vmw_private *dev_priv,
list_add_tail(&val_buf->head, &sw_context->validate_nodes);
++sw_context->cur_val_buf;
}
*vmw_bo_p = vmw_bo;
return 0;
out_no_reloc:
vmw_dmabuf_unreference(&vmw_bo);
vmw_bo_p = NULL;
return ret;
}
static int vmw_cmd_end_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;
SVGA3dCmdEndQuery q;
} *cmd;
int ret;
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);
return 0;
}
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;
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);
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;
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) {
@ -379,8 +455,8 @@ static vmw_cmd_func vmw_cmd_funcs[SVGA_3D_CMD_MAX] = {
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_cid_check),
VMW_CMD_DEF(SVGA_3D_CMD_WAIT_FOR_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)