mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 17:08:10 +00:00
7f317d3490
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Kees Cook <keescook@chromium.org> Link: http://lkml.kernel.org/r/20200726110117.16346-1-grandmaster@al2klimov.de Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
91 lines
3 KiB
C
91 lines
3 KiB
C
/*
|
|
* Keystone Navigator Queue Management Sub-System header
|
|
*
|
|
* Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com
|
|
* Author: Sandeep Nair <sandeep_n@ti.com>
|
|
* Cyril Chemparathy <cyril@ti.com>
|
|
* Santosh Shilimkar <santosh.shilimkar@ti.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation version 2.
|
|
*
|
|
* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
|
* kind, whether express or implied; without even the implied warranty
|
|
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*/
|
|
|
|
#ifndef __SOC_TI_KNAV_QMSS_H__
|
|
#define __SOC_TI_KNAV_QMSS_H__
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/time.h>
|
|
#include <linux/atomic.h>
|
|
#include <linux/device.h>
|
|
#include <linux/fcntl.h>
|
|
#include <linux/dma-mapping.h>
|
|
|
|
/* queue types */
|
|
#define KNAV_QUEUE_QPEND ((unsigned)-2) /* interruptible qpend queue */
|
|
#define KNAV_QUEUE_ACC ((unsigned)-3) /* Accumulated queue */
|
|
#define KNAV_QUEUE_GP ((unsigned)-4) /* General purpose queue */
|
|
|
|
/* queue flags */
|
|
#define KNAV_QUEUE_SHARED 0x0001 /* Queue can be shared */
|
|
|
|
/**
|
|
* enum knav_queue_ctrl_cmd - queue operations.
|
|
* @KNAV_QUEUE_GET_ID: Get the ID number for an open queue
|
|
* @KNAV_QUEUE_FLUSH: forcibly empty a queue if possible
|
|
* @KNAV_QUEUE_SET_NOTIFIER: Set a notifier callback to a queue handle.
|
|
* @KNAV_QUEUE_ENABLE_NOTIFY: Enable notifier callback for a queue handle.
|
|
* @KNAV_QUEUE_DISABLE_NOTIFY: Disable notifier callback for a queue handle.
|
|
* @KNAV_QUEUE_GET_COUNT: Get number of queues.
|
|
*/
|
|
enum knav_queue_ctrl_cmd {
|
|
KNAV_QUEUE_GET_ID,
|
|
KNAV_QUEUE_FLUSH,
|
|
KNAV_QUEUE_SET_NOTIFIER,
|
|
KNAV_QUEUE_ENABLE_NOTIFY,
|
|
KNAV_QUEUE_DISABLE_NOTIFY,
|
|
KNAV_QUEUE_GET_COUNT
|
|
};
|
|
|
|
/* Queue notifier callback prototype */
|
|
typedef void (*knav_queue_notify_fn)(void *arg);
|
|
|
|
/**
|
|
* struct knav_queue_notify_config: Notifier configuration
|
|
* @fn: Notifier function
|
|
* @fn_arg: Notifier function arguments
|
|
*/
|
|
struct knav_queue_notify_config {
|
|
knav_queue_notify_fn fn;
|
|
void *fn_arg;
|
|
};
|
|
|
|
void *knav_queue_open(const char *name, unsigned id,
|
|
unsigned flags);
|
|
void knav_queue_close(void *qhandle);
|
|
int knav_queue_device_control(void *qhandle,
|
|
enum knav_queue_ctrl_cmd cmd,
|
|
unsigned long arg);
|
|
dma_addr_t knav_queue_pop(void *qhandle, unsigned *size);
|
|
int knav_queue_push(void *qhandle, dma_addr_t dma,
|
|
unsigned size, unsigned flags);
|
|
|
|
void *knav_pool_create(const char *name,
|
|
int num_desc, int region_id);
|
|
void knav_pool_destroy(void *ph);
|
|
int knav_pool_count(void *ph);
|
|
void *knav_pool_desc_get(void *ph);
|
|
void knav_pool_desc_put(void *ph, void *desc);
|
|
int knav_pool_desc_map(void *ph, void *desc, unsigned size,
|
|
dma_addr_t *dma, unsigned *dma_sz);
|
|
void *knav_pool_desc_unmap(void *ph, dma_addr_t dma, unsigned dma_sz);
|
|
dma_addr_t knav_pool_desc_virt_to_dma(void *ph, void *virt);
|
|
void *knav_pool_desc_dma_to_virt(void *ph, dma_addr_t dma);
|
|
bool knav_qmss_device_ready(void);
|
|
|
|
#endif /* __SOC_TI_KNAV_QMSS_H__ */
|