drivers/misc/mic/scif/scif_rma_list.h

   1 /*
   2  * Intel MIC Platform Software Stack (MPSS)
   3  *
   4  * Copyright(c) 2015 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License, version 2, as
   8  * published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  13  * General Public License for more details.
  14  *
  15  * Intel SCIF driver.
  16  *
  17  */
  18 #ifndef SCIF_RMA_LIST_H
  19 #define SCIF_RMA_LIST_H
  20
  21 /*
  22  * struct scif_rma_req - Self Registration list RMA Request query
  23  *
  24  * @out_window - Returns the window if found
  25  * @offset: Starting offset
  26  * @nr_bytes: number of bytes
  27  * @prot: protection requested i.e. read or write or both
  28  * @type: Specify single, partial or multiple windows
  29  * @head: Head of list on which to search
  30  * @va_for_temp: VA for searching temporary cached windows
  31  */
  32 struct scif_rma_req {
  33         struct scif_window **out_window;
  34         union {
  35                 s64 offset;
  36                 unsigned long va_for_temp;
  37         };
  38         size_t nr_bytes;
  39         int prot;
  40         enum scif_window_type type;
  41         struct list_head *head;
  42 };
  43
  44 /* Insert */
  45 void scif_insert_window(struct scif_window *window, struct list_head *head);
  46 void scif_insert_tcw(struct scif_window *window,
  47                      struct list_head *head);
  48 /* Query */
  49 int scif_query_window(struct scif_rma_req *request);
  50 int scif_query_tcw(struct scif_endpt *ep, struct scif_rma_req *request);
  51 /* Called from close to unregister all self windows */
  52 int scif_unregister_all_windows(scif_epd_t epd);
  53 void scif_unmap_all_windows(scif_epd_t epd);
  54 /* Traverse list and unregister */
  55 int scif_rma_list_unregister(struct scif_window *window, s64 offset,
  56                              int nr_pages);
  57 #endif /* SCIF_RMA_LIST_H */