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drm/vmwgfx: Implement an infrastructure for write-coherent resources

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This infrastructure will, for coherent resources, make sure that
from the user-space point of view, data written by the CPU is immediately
automatically available to the GPU at resource validation time.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Deepak Rawat <drawat@vmware.com>
This commit is contained in:
Thomas Hellstrom
2019-03-27 10:56:08 +01:00
parent 7a39f35ce4
commit 9339221706
11 changed files with 584 additions and 20 deletions
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16
drivers/gpu/drm/vmwgfx/vmwgfx_validation.h
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@@ -172,20 +172,6 @@ vmw_validation_bo_reserve(struct vmw_validation_context *ctx,
NULL, true);
}
/**
* vmw_validation_bo_backoff - Unreserve buffer objects registered with a
* validation context
* @ctx: The validation context
*
* This function unreserves the buffer objects previously reserved using
* vmw_validation_bo_reserve. It's typically used as part of an error path
*/
static inline void
vmw_validation_bo_backoff(struct vmw_validation_context *ctx)
{
ttm_eu_backoff_reservation(&ctx->ticket, &ctx->bo_list);
}
/**
* vmw_validation_bo_fence - Unreserve and fence buffer objects registered
* with a validation context
@@ -268,4 +254,6 @@ int vmw_validation_preload_res(struct vmw_validation_context *ctx,
unsigned int size);
void vmw_validation_res_set_dirty(struct vmw_validation_context *ctx,
void *val_private, u32 dirty);
void vmw_validation_bo_backoff(struct vmw_validation_context *ctx);
#endif