drivers/infiniband/hw/amso1100/c2_vq.h

   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
  40 struct 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
  50 extern int vq_init(struct c2_dev *c2dev);
  51 extern void vq_term(struct c2_dev *c2dev);
  52
  53 extern struct c2_vq_req *vq_req_alloc(struct c2_dev *c2dev);
  54 extern void vq_req_free(struct c2_dev *c2dev, struct c2_vq_req *req);
  55 extern void vq_req_get(struct c2_dev *c2dev, struct c2_vq_req *req);
  56 extern void vq_req_put(struct c2_dev *c2dev, struct c2_vq_req *req);
  57 extern int vq_send_wr(struct c2_dev *c2dev, union c2wr * wr);
  58
  59 extern void *vq_repbuf_alloc(struct c2_dev *c2dev);
  60 extern void vq_repbuf_free(struct c2_dev *c2dev, void *reply);
  61
  62 extern int vq_wait_for_reply(struct c2_dev *c2dev, struct c2_vq_req *req);
  63 #endif                          /* _C2_VQ_H_ */