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 */