summaryrefslogtreecommitdiffstats
path: root/include/drm/ttm/ttm_bo_driver.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/drm/ttm/ttm_bo_driver.h')
-rw-r--r--include/drm/ttm/ttm_bo_driver.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index 990d529f823c..d30850e07936 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -472,6 +472,23 @@ struct ttm_bo_driver {
*/
unsigned long (*io_mem_pfn)(struct ttm_buffer_object *bo,
unsigned long page_offset);
+
+ /**
+ * Read/write memory buffers for ptrace access
+ *
+ * @bo: the BO to access
+ * @offset: the offset from the start of the BO
+ * @buf: pointer to source/destination buffer
+ * @len: number of bytes to copy
+ * @write: whether to read (0) from or write (non-0) to BO
+ *
+ * If successful, this function should return the number of
+ * bytes copied, -EIO otherwise. If the number of bytes
+ * returned is < len, the function may be called again with
+ * the remainder of the buffer to copy.
+ */
+ int (*access_memory)(struct ttm_buffer_object *bo, unsigned long offset,
+ void *buf, int len, int write);
};
/**