1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * Intel MIC Platform Software Stack (MPSS)
4  *
5  * Copyright(c) 2015 Intel Corporation.
6  *
7  * Intel SCIF driver.
8  */
9 #ifndef SCIF_RMA_LIST_H
10 #define SCIF_RMA_LIST_H
11 
12 /*
13  * struct scif_rma_req - Self Registration list RMA Request query
14  *
15  * @out_window - Returns the window if found
16  * @offset: Starting offset
17  * @nr_bytes: number of bytes
18  * @prot: protection requested i.e. read or write or both
19  * @type: Specify single, partial or multiple windows
20  * @head: Head of list on which to search
21  * @va_for_temp: VA for searching temporary cached windows
22  */
23 struct scif_rma_req {
24 	struct scif_window **out_window;
25 	union {
26 		s64 offset;
27 		unsigned long va_for_temp;
28 	};
29 	size_t nr_bytes;
30 	int prot;
31 	enum scif_window_type type;
32 	struct list_head *head;
33 };
34 
35 /* Insert */
36 void scif_insert_window(struct scif_window *window, struct list_head *head);
37 void scif_insert_tcw(struct scif_window *window,
38 		     struct list_head *head);
39 /* Query */
40 int scif_query_window(struct scif_rma_req *request);
41 int scif_query_tcw(struct scif_endpt *ep, struct scif_rma_req *request);
42 /* Called from close to unregister all self windows */
43 int scif_unregister_all_windows(scif_epd_t epd);
44 void scif_unmap_all_windows(scif_epd_t epd);
45 /* Traverse list and unregister */
46 int scif_rma_list_unregister(struct scif_window *window, s64 offset,
47 			     int nr_pages);
48 #endif /* SCIF_RMA_LIST_H */
49