drivers/infiniband/core/uverbs.h

   1 /*
   2  * Copyright (c) 2005 Topspin Communications.  All rights reserved.
   3  * Copyright (c) 2005 Cisco Systems.  All rights reserved.
   4  * Copyright (c) 2005 Mellanox Technologies. All rights reserved.
   5  * Copyright (c) 2005 Voltaire, Inc. All rights reserved.
   6  *
   7  * This software is available to you under a choice of one of two
   8  * licenses.  You may choose to be licensed under the terms of the GNU
   9  * General Public License (GPL) Version 2, available from the file
  10  * COPYING in the main directory of this source tree, or the
  11  * OpenIB.org BSD license below:
  12  *
  13  *     Redistribution and use in source and binary forms, with or
  14  *     without modification, are permitted provided that the following
  15  *     conditions are met:
  16  *
  17  *      - Redistributions of source code must retain the above
  18  *        copyright notice, this list of conditions and the following
  19  *        disclaimer.
  20  *
  21  *      - Redistributions in binary form must reproduce the above
  22  *        copyright notice, this list of conditions and the following
  23  *        disclaimer in the documentation and/or other materials
  24  *        provided with the distribution.
  25  *
  26  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  27  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  28  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  29  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  30  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  31  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  32  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  33  * SOFTWARE.
  34  *
  35  * $Id: uverbs.h 2559 2005-06-06 19:43:16Z roland $
  36  */
  37
  38 #ifndef UVERBS_H
  39 #define UVERBS_H
  40
  41 /* Include device.h and fs.h until cdev.h is self-sufficient */
  42 #include <linux/fs.h>
  43 #include <linux/device.h>
  44 #include <linux/cdev.h>
  45 #include <linux/kref.h>
  46 #include <linux/idr.h>
  47
  48 #include <rdma/ib_verbs.h>
  49 #include <rdma/ib_user_verbs.h>
  50
  51 struct ib_uverbs_device {
  52         int                                     devnum;
  53         struct cdev                             dev;
  54         struct class_device                     class_dev;
  55         struct ib_device                       *ib_dev;
  56         int                                     num_comp;
  57 };
  58
  59 struct ib_uverbs_event_file {
  60         struct kref                             ref;
  61         struct ib_uverbs_file                  *uverbs_file;
  62         spinlock_t                              lock;
  63         int                                     fd;
  64         int                                     is_async;
  65         wait_queue_head_t                       poll_wait;
  66         struct fasync_struct                   *async_queue;
  67         struct list_head                        event_list;
  68 };
  69
  70 struct ib_uverbs_file {
  71         struct kref                             ref;
  72         struct ib_uverbs_device                *device;
  73         struct ib_ucontext                     *ucontext;
  74         struct ib_event_handler                 event_handler;
  75         struct ib_uverbs_event_file             async_file;
  76         struct ib_uverbs_event_file             comp_file[1];
  77 };
  78
  79 struct ib_uverbs_async_event {
  80         struct ib_uverbs_async_event_desc       desc;
  81         struct list_head                        list;
  82 };
  83
  84 struct ib_uverbs_comp_event {
  85         struct ib_uverbs_comp_event_desc        desc;
  86         struct list_head                        list;
  87 };
  88
  89 struct ib_uobject_mr {
  90         struct ib_uobject                       uobj;
  91         struct page                            *page_list;
  92         struct scatterlist                     *sg_list;
  93 };
  94
  95 extern struct semaphore ib_uverbs_idr_mutex;
  96 extern struct idr ib_uverbs_pd_idr;
  97 extern struct idr ib_uverbs_mr_idr;
  98 extern struct idr ib_uverbs_mw_idr;
  99 extern struct idr ib_uverbs_ah_idr;
 100 extern struct idr ib_uverbs_cq_idr;
 101 extern struct idr ib_uverbs_qp_idr;
 102 extern struct idr ib_uverbs_srq_idr;
 103
 104 void ib_uverbs_comp_handler(struct ib_cq *cq, void *cq_context);
 105 void ib_uverbs_cq_event_handler(struct ib_event *event, void *context_ptr);
 106 void ib_uverbs_qp_event_handler(struct ib_event *event, void *context_ptr);
 107 void ib_uverbs_srq_event_handler(struct ib_event *event, void *context_ptr);
 108
 109 int ib_umem_get(struct ib_device *dev, struct ib_umem *mem,
 110                 void *addr, size_t size, int write);
 111 void ib_umem_release(struct ib_device *dev, struct ib_umem *umem);
 112 void ib_umem_release_on_close(struct ib_device *dev, struct ib_umem *umem);
 113
 114 #define IB_UVERBS_DECLARE_CMD(name)                                     \
 115         ssize_t ib_uverbs_##name(struct ib_uverbs_file *file,           \
 116                                  const char __user *buf, int in_len,    \
 117                                  int out_len)
 118
 119 IB_UVERBS_DECLARE_CMD(query_params);
 120 IB_UVERBS_DECLARE_CMD(get_context);
 121 IB_UVERBS_DECLARE_CMD(query_device);
 122 IB_UVERBS_DECLARE_CMD(query_port);
 123 IB_UVERBS_DECLARE_CMD(query_gid);
 124 IB_UVERBS_DECLARE_CMD(query_pkey);
 125 IB_UVERBS_DECLARE_CMD(alloc_pd);
 126 IB_UVERBS_DECLARE_CMD(dealloc_pd);
 127 IB_UVERBS_DECLARE_CMD(reg_mr);
 128 IB_UVERBS_DECLARE_CMD(dereg_mr);
 129 IB_UVERBS_DECLARE_CMD(create_cq);
 130 IB_UVERBS_DECLARE_CMD(destroy_cq);
 131 IB_UVERBS_DECLARE_CMD(create_qp);
 132 IB_UVERBS_DECLARE_CMD(modify_qp);
 133 IB_UVERBS_DECLARE_CMD(destroy_qp);
 134 IB_UVERBS_DECLARE_CMD(attach_mcast);
 135 IB_UVERBS_DECLARE_CMD(detach_mcast);
 136 IB_UVERBS_DECLARE_CMD(create_srq);
 137 IB_UVERBS_DECLARE_CMD(modify_srq);
 138 IB_UVERBS_DECLARE_CMD(destroy_srq);
 139
 140 #endif /* UVERBS_H */