drivers/infiniband/core/mad_priv.h

   1 /*
   2  * Copyright (c) 2004, 2005, Voltaire, Inc. All rights reserved.
   3  * Copyright (c) 2005 Intel Corporation. All rights reserved.
   4  * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
   5  *
   6  * This software is available to you under a choice of one of two
   7  * licenses.  You may choose to be licensed under the terms of the GNU
   8  * General Public License (GPL) Version 2, available from the file
   9  * COPYING in the main directory of this source tree, or the
  10  * OpenIB.org BSD license below:
  11  *
  12  *     Redistribution and use in source and binary forms, with or
  13  *     without modification, are permitted provided that the following
  14  *     conditions are met:
  15  *
  16  *      - Redistributions of source code must retain the above
  17  *        copyright notice, this list of conditions and the following
  18  *        disclaimer.
  19  *
  20  *      - Redistributions in binary form must reproduce the above
  21  *        copyright notice, this list of conditions and the following
  22  *        disclaimer in the documentation and/or other materials
  23  *        provided with the distribution.
  24  *
  25  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  29  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  30  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  31  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  32  * SOFTWARE.
  33  *
  34  * $Id: mad_priv.h 2730 2005-06-28 16:43:03Z sean.hefty $
  35  */
  36
  37 #ifndef __IB_MAD_PRIV_H__
  38 #define __IB_MAD_PRIV_H__
  39
  40 #include <linux/pci.h>
  41 #include <linux/kthread.h>
  42 #include <linux/workqueue.h>
  43 #include <rdma/ib_mad.h>
  44 #include <rdma/ib_smi.h>
  45
  46
  47 #define PFX "ib_mad: "
  48
  49 #define IB_MAD_QPS_CORE         2 /* Always QP0 and QP1 as a minimum */
  50
  51 /* QP and CQ parameters */
  52 #define IB_MAD_QP_SEND_SIZE     128
  53 #define IB_MAD_QP_RECV_SIZE     512
  54 #define IB_MAD_SEND_REQ_MAX_SG  2
  55 #define IB_MAD_RECV_REQ_MAX_SG  1
  56
  57 #define IB_MAD_SEND_Q_PSN       0
  58
  59 /* Registration table sizes */
  60 #define MAX_MGMT_CLASS          80
  61 #define MAX_MGMT_VERSION        8
  62 #define MAX_MGMT_OUI            8
  63 #define MAX_MGMT_VENDOR_RANGE2  (IB_MGMT_CLASS_VENDOR_RANGE2_END - \
  64                                 IB_MGMT_CLASS_VENDOR_RANGE2_START + 1)
  65
  66 struct ib_mad_list_head {
  67         struct list_head list;
  68         struct ib_mad_queue *mad_queue;
  69 };
  70
  71 struct ib_mad_private_header {
  72         struct ib_mad_list_head mad_list;
  73         struct ib_mad_recv_wc recv_wc;
  74         struct ib_wc wc;
  75         DECLARE_PCI_UNMAP_ADDR(mapping)
  76 } __attribute__ ((packed));
  77
  78 struct ib_mad_private {
  79         struct ib_mad_private_header header;
  80         struct ib_grh grh;
  81         union {
  82                 struct ib_mad mad;
  83                 struct ib_rmpp_mad rmpp_mad;
  84                 struct ib_smp smp;
  85         } mad;
  86 } __attribute__ ((packed));
  87
  88 struct ib_mad_agent_private {
  89         struct list_head agent_list;
  90         struct ib_mad_agent agent;
  91         struct ib_mad_reg_req *reg_req;
  92         struct ib_mad_qp_info *qp_info;
  93
  94         spinlock_t lock;
  95         struct list_head send_list;
  96         struct list_head wait_list;
  97         struct list_head done_list;
  98         struct work_struct timed_work;
  99         unsigned long timeout;
 100         struct list_head local_list;
 101         struct work_struct local_work;
 102         struct list_head rmpp_list;
 103
 104         atomic_t refcount;
 105         wait_queue_head_t wait;
 106 };
 107
 108 struct ib_mad_snoop_private {
 109         struct ib_mad_agent agent;
 110         struct ib_mad_qp_info *qp_info;
 111         int snoop_index;
 112         int mad_snoop_flags;
 113         atomic_t refcount;
 114         wait_queue_head_t wait;
 115 };
 116
 117 struct ib_mad_send_wr_private {
 118         struct ib_mad_list_head mad_list;
 119         struct list_head agent_list;
 120         struct ib_mad_agent_private *mad_agent_priv;
 121         struct ib_mad_send_buf send_buf;
 122         DECLARE_PCI_UNMAP_ADDR(mapping)
 123         struct ib_send_wr send_wr;
 124         struct ib_sge sg_list[IB_MAD_SEND_REQ_MAX_SG];
 125         __be64 tid;
 126         unsigned long timeout;
 127         int retries;
 128         int retry;
 129         int refcount;
 130         enum ib_wc_status status;
 131
 132         /* RMPP control */
 133         int last_ack;
 134         int seg_num;
 135         int newwin;
 136         int total_seg;
 137         int data_offset;
 138         int pad;
 139 };
 140
 141 struct ib_mad_local_private {
 142         struct list_head completion_list;
 143         struct ib_mad_private *mad_priv;
 144         struct ib_mad_agent_private *recv_mad_agent;
 145         struct ib_mad_send_wr_private *mad_send_wr;
 146 };
 147
 148 struct ib_mad_mgmt_method_table {
 149         struct ib_mad_agent_private *agent[IB_MGMT_MAX_METHODS];
 150 };
 151
 152 struct ib_mad_mgmt_class_table {
 153         struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_CLASS];
 154 };
 155
 156 struct ib_mad_mgmt_vendor_class {
 157         u8      oui[MAX_MGMT_OUI][3];
 158         struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_OUI];
 159 };
 160
 161 struct ib_mad_mgmt_vendor_class_table {
 162         struct ib_mad_mgmt_vendor_class *vendor_class[MAX_MGMT_VENDOR_RANGE2];
 163 };
 164
 165 struct ib_mad_mgmt_version_table {
 166         struct ib_mad_mgmt_class_table *class;
 167         struct ib_mad_mgmt_vendor_class_table *vendor;
 168 };
 169
 170 struct ib_mad_queue {
 171         spinlock_t lock;
 172         struct list_head list;
 173         int count;
 174         int max_active;
 175         struct ib_mad_qp_info *qp_info;
 176 };
 177
 178 struct ib_mad_qp_info {
 179         struct ib_mad_port_private *port_priv;
 180         struct ib_qp *qp;
 181         struct ib_mad_queue send_queue;
 182         struct ib_mad_queue recv_queue;
 183         struct list_head overflow_list;
 184         spinlock_t snoop_lock;
 185         struct ib_mad_snoop_private **snoop_table;
 186         int snoop_table_size;
 187         atomic_t snoop_count;
 188 };
 189
 190 struct ib_mad_port_private {
 191         struct list_head port_list;
 192         struct ib_device *device;
 193         int port_num;
 194         struct ib_cq *cq;
 195         struct ib_pd *pd;
 196         struct ib_mr *mr;
 197
 198         spinlock_t reg_lock;
 199         struct ib_mad_mgmt_version_table version[MAX_MGMT_VERSION];
 200         struct list_head agent_list;
 201         struct workqueue_struct *wq;
 202         struct work_struct work;
 203         struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE];
 204 };
 205
 206 extern kmem_cache_t *ib_mad_cache;
 207
 208 int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr);
 209
 210 struct ib_mad_send_wr_private *
 211 ib_find_send_mad(struct ib_mad_agent_private *mad_agent_priv, __be64 tid);
 212
 213 void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
 214                              struct ib_mad_send_wc *mad_send_wc);
 215
 216 void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr);
 217
 218 void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr,
 219                           int timeout_ms);
 220
 221 #endif  /* __IB_MAD_PRIV_H__ */