LXR linux/drivers/infiniband/hw/amso1100/c2

   1/*
   2 * Copyright (c) 2005 Ammasso, Inc. All rights reserved.
   3 * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
   4 *
   5 * This software is available to you under a choice of one of two
   6 * licenses.  You may choose to be licensed under the terms of the GNU
   7 * General Public License (GPL) Version 2, available from the file
   8 * COPYING in the main directory of this source tree, or the
   9 * OpenIB.org BSD license below:
  10 *
  11 *     Redistribution and use in source and binary forms, with or
  12 *     without modification, are permitted provided that the following
  13 *     conditions are met:
  14 *
  15 *      - Redistributions of source code must retain the above
  16 *        copyright notice, this list of conditions and the following
  17 *        disclaimer.
  18 *
  19 *      - Redistributions in binary form must reproduce the above
  20 *        copyright notice, this list of conditions and the following
  21 *        disclaimer in the documentation and/or other materials
  22 *        provided with the distribution.
  23 *
  24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31 * SOFTWARE.
  32 */
  33#ifndef _C2_VQ_H_
  34#define _C2_VQ_H_
  35#include <linux/sched.h>
  36#include "c2.h"
  37#include "c2_wr.h"
  38#include "c2_provider.h"
  39
  40struct c2_vq_req {
  41        u64 reply_msg;          /* ptr to reply msg */
  42        wait_queue_head_t wait_object;  /* wait object for vq reqs */
  43        atomic_t reply_ready;   /* set when reply is ready */
  44        atomic_t refcnt;        /* used to cancel WRs... */
  45        int event;
  46        struct iw_cm_id *cm_id;
  47        struct c2_qp *qp;
  48};
  49
  50extern int vq_init(struct c2_dev *c2dev);
  51extern void vq_term(struct c2_dev *c2dev);
  52
  53extern struct c2_vq_req *vq_req_alloc(struct c2_dev *c2dev);
  54extern void vq_req_free(struct c2_dev *c2dev, struct c2_vq_req *req);
  55extern void vq_req_get(struct c2_dev *c2dev, struct c2_vq_req *req);
  56extern void vq_req_put(struct c2_dev *c2dev, struct c2_vq_req *req);
  57extern int vq_send_wr(struct c2_dev *c2dev, union c2wr * wr);
  58
  59extern void *vq_repbuf_alloc(struct c2_dev *c2dev);
  60extern void vq_repbuf_free(struct c2_dev *c2dev, void *reply);
  61
  62extern int vq_wait_for_reply(struct c2_dev *c2dev, struct c2_vq_req *req);
  63#endif                          /* _C2_VQ_H_ */
  64