linux/drivers/infiniband/hw/hns/hns_roce_cmd.c

/*
 * Copyright (c) 2016 Hisilicon Limited.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <linux/dmapool.h>
#include "hns_roce_common.h"
#include "hns_roce_device.h"
#include "hns_roce_cmd.h"

#define CMD_POLL_TOKEN …
#define CMD_MAX_NUM …

static int hns_roce_cmd_mbox_post_hw(struct hns_roce_dev *hr_dev,
				     struct hns_roce_mbox_msg *mbox_msg)
{ … }

/* this should be called with "poll_sem" */
static int __hns_roce_cmd_mbox_poll(struct hns_roce_dev *hr_dev,
				    struct hns_roce_mbox_msg *mbox_msg)
{ … }

static int hns_roce_cmd_mbox_poll(struct hns_roce_dev *hr_dev,
				  struct hns_roce_mbox_msg *mbox_msg)
{ … }

void hns_roce_cmd_event(struct hns_roce_dev *hr_dev, u16 token, u8 status,
			u64 out_param)
{ … }

static int __hns_roce_cmd_mbox_wait(struct hns_roce_dev *hr_dev,
				    struct hns_roce_mbox_msg *mbox_msg)
{ … }

static int hns_roce_cmd_mbox_wait(struct hns_roce_dev *hr_dev,
				  struct hns_roce_mbox_msg *mbox_msg)
{ … }

int hns_roce_cmd_mbox(struct hns_roce_dev *hr_dev, u64 in_param, u64 out_param,
		      u8 cmd, unsigned long tag)
{ … }

int hns_roce_cmd_init(struct hns_roce_dev *hr_dev)
{ … }

void hns_roce_cmd_cleanup(struct hns_roce_dev *hr_dev)
{ … }

int hns_roce_cmd_use_events(struct hns_roce_dev *hr_dev)
{ … }

void hns_roce_cmd_use_polling(struct hns_roce_dev *hr_dev)
{ … }

struct hns_roce_cmd_mailbox *
hns_roce_alloc_cmd_mailbox(struct hns_roce_dev *hr_dev)
{ … }

void hns_roce_free_cmd_mailbox(struct hns_roce_dev *hr_dev,
			       struct hns_roce_cmd_mailbox *mailbox)
{ … }

int hns_roce_create_hw_ctx(struct hns_roce_dev *dev,
			   struct hns_roce_cmd_mailbox *mailbox,
			   u8 cmd, unsigned long idx)
{ … }

int hns_roce_destroy_hw_ctx(struct hns_roce_dev *dev, u8 cmd, unsigned long idx)
{ … }