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drm/vmwgfx: Add "quirk" to handling command verification exceptions

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For certain surface copies, we don't have a user space handle for
the destination surface.  In such cases, we are going to trust that
our caller is giving us the right surface ID.

To do this case, we created a quirk flag that may be useful
in the future for handling other cases.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Sinclair Yeh <syeh@vmware.com>
This commit is contained in:
Thomas Hellstrom 2015-03-02 23:45:04 -08:00
parent c8261a961e
commit c9146cd918
4 changed files with 19 additions and 5 deletions
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10
drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c
View file

@ -679,6 +679,10 @@ static int vmw_cmd_surface_copy_check(struct vmw_private *dev_priv,
&cmd->body.src.sid, NULL);
if (unlikely(ret != 0))
return ret;
if (sw_context->quirks & VMW_QUIRK_SCREENTARGET)
return 0;
return vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
user_surface_converter,
&cmd->body.dest.sid, NULL);
@ -1260,6 +1264,9 @@ static int vmw_cmd_dma(struct vmw_private *dev_priv,
if (unlikely(suffix->maximumOffset > bo_size))
suffix->maximumOffset = bo_size;
if (sw_context->quirks & VMW_QUIRK_SCREENTARGET)
goto out_no_surface;
ret = vmw_cmd_res_check(dev_priv, sw_context, vmw_res_surface,
user_surface_converter, &cmd->dma.host.sid,
NULL);
@ -2544,6 +2551,7 @@ int vmw_execbuf_process(struct drm_file *file_priv,
void *kernel_commands,
uint32_t command_size,
uint64_t throttle_us,
uint32_t quirks,
struct drm_vmw_fence_rep __user *user_fence_rep,
struct vmw_fence_obj **out_fence)
{
@ -2598,6 +2606,7 @@ int vmw_execbuf_process(struct drm_file *file_priv,
sw_context->fp = vmw_fpriv(file_priv);
sw_context->cur_reloc = 0;
sw_context->cur_val_buf = 0;
sw_context->quirks = quirks;
INIT_LIST_HEAD(&sw_context->resource_list);
sw_context->cur_query_bo = dev_priv->pinned_bo;
sw_context->last_query_ctx = NULL;
@ -2904,6 +2913,7 @@ int vmw_execbuf_ioctl(struct drm_device *dev, void *data,
ret = vmw_execbuf_process(file_priv, dev_priv,
(void __user *)(unsigned long)arg->commands,
NULL, arg->command_size, arg->throttle_us,
0,
(void __user *)(unsigned long)arg->fence_rep,
NULL);
ttm_read_unlock(&dev_priv->reservation_sem);