mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-19 17:11:03 +00:00
168ef015ca
This patch adds the implementation for operations performed on the list of SCIF windows. Examples of such operations includes adding the windows to the list of registered (or cached) windows, querying the list of self or remote windows and unregistering windows. The query operation is used by SCIF APIs which initiate DMAs, CPU copies or fences to ensure that a window remains valid during a transfer. Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/*
|
|
* Intel MIC Platform Software Stack (MPSS)
|
|
*
|
|
* Copyright(c) 2015 Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License, version 2, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* Intel SCIF driver.
|
|
*
|
|
*/
|
|
#ifndef SCIF_RMA_LIST_H
|
|
#define SCIF_RMA_LIST_H
|
|
|
|
/*
|
|
* struct scif_rma_req - Self Registration list RMA Request query
|
|
*
|
|
* @out_window - Returns the window if found
|
|
* @offset: Starting offset
|
|
* @nr_bytes: number of bytes
|
|
* @prot: protection requested i.e. read or write or both
|
|
* @type: Specify single, partial or multiple windows
|
|
* @head: Head of list on which to search
|
|
* @va_for_temp: VA for searching temporary cached windows
|
|
*/
|
|
struct scif_rma_req {
|
|
struct scif_window **out_window;
|
|
union {
|
|
s64 offset;
|
|
unsigned long va_for_temp;
|
|
};
|
|
size_t nr_bytes;
|
|
int prot;
|
|
enum scif_window_type type;
|
|
struct list_head *head;
|
|
};
|
|
|
|
/* Insert */
|
|
void scif_insert_window(struct scif_window *window, struct list_head *head);
|
|
void scif_insert_tcw(struct scif_window *window,
|
|
struct list_head *head);
|
|
/* Query */
|
|
int scif_query_window(struct scif_rma_req *request);
|
|
int scif_query_tcw(struct scif_endpt *ep, struct scif_rma_req *request);
|
|
/* Called from close to unregister all self windows */
|
|
int scif_unregister_all_windows(scif_epd_t epd);
|
|
void scif_unmap_all_windows(scif_epd_t epd);
|
|
/* Traverse list and unregister */
|
|
int scif_rma_list_unregister(struct scif_window *window, s64 offset,
|
|
int nr_pages);
|
|
#endif /* SCIF_RMA_LIST_H */
|