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path: root/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h
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Diffstat (limited to 'drivers/gpu/drm/vmwgfx/vmwgfx_validation.h')
-rw-r--r--drivers/gpu/drm/vmwgfx/vmwgfx_validation.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h
index b57e3292c386..3b396fea40d7 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_validation.h
@@ -34,6 +34,21 @@
#include <drm/ttm/ttm_execbuf_util.h>
/**
+ * struct vmw_validation_mem - Custom interface to provide memory reservations
+ * for the validation code.
+ * @reserve_mem: Callback to reserve memory
+ * @unreserve_mem: Callback to unreserve memory
+ * @gran: Reservation granularity. Contains a hint how much memory should
+ * be reserved in each call to @reserve_mem(). A slow implementation may want
+ * reservation to be done in large batches.
+ */
+struct vmw_validation_mem {
+ int (*reserve_mem)(struct vmw_validation_mem *m, size_t size);
+ void (*unreserve_mem)(struct vmw_validation_mem *m, size_t size);
+ size_t gran;
+};
+
+/**
* struct vmw_validation_context - Per command submission validation context
* @ht: Hash table used to find resource- or buffer object duplicates
* @resource_list: List head for resource validation metadata
@@ -47,6 +62,10 @@
* buffer objects
* @mem_size_left: Free memory left in the last page in @page_list
* @page_address: Kernel virtual address of the last page in @page_list
+ * @vm: A pointer to the memory reservation interface or NULL if no
+ * memory reservation is needed.
+ * @vm_size_left: Amount of reserved memory that so far has not been allocated.
+ * @total_mem: Amount of reserved memory.
*/
struct vmw_validation_context {
struct drm_open_hash *ht;
@@ -59,6 +78,9 @@ struct vmw_validation_context {
unsigned int merge_dups;
unsigned int mem_size_left;
u8 *page_address;
+ struct vmw_validation_mem *vm;
+ size_t vm_size_left;
+ size_t total_mem;
};
struct vmw_buffer_object;
@@ -102,6 +124,21 @@ vmw_validation_has_bos(struct vmw_validation_context *ctx)
}
/**
+ * vmw_validation_set_val_mem - Register a validation mem object for
+ * validation memory reservation
+ * @ctx: The validation context
+ * @vm: Pointer to a struct vmw_validation_mem
+ *
+ * Must be set before the first attempt to allocate validation memory.
+ */
+static inline void
+vmw_validation_set_val_mem(struct vmw_validation_context *ctx,
+ struct vmw_validation_mem *vm)
+{
+ ctx->vm = vm;
+}
+
+/**
* vmw_validation_set_ht - Register a hash table for duplicate finding
* @ctx: The validation context
* @ht: Pointer to a hash table to use for duplicate finding