LXR linux/drivers/infiniband/core/mad

   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 5596 2006-03-03 01:00:07Z sean.hefty $
  35 */
  36
  37#ifndef __IB_MAD_PRIV_H__
  38#define __IB_MAD_PRIV_H__
  39
  40#include <linux/completion.h>
  41#include <linux/pci.h>
  42#include <linux/kthread.h>
  43#include <linux/workqueue.h>
  44#include <rdma/ib_mad.h>
  45#include <rdma/ib_smi.h>
  46
  47
  48#define PFX "ib_mad: "
  49
  50#define IB_MAD_QPS_CORE         2 /* Always QP0 and QP1 as a minimum */
  51
  52/* QP and CQ parameters */
  53#define IB_MAD_QP_SEND_SIZE     128
  54#define IB_MAD_QP_RECV_SIZE     512
  55#define IB_MAD_SEND_REQ_MAX_SG  2
  56#define IB_MAD_RECV_REQ_MAX_SG  1
  57
  58#define IB_MAD_SEND_Q_PSN       0
  59
  60/* Registration table sizes */
  61#define MAX_MGMT_CLASS          80
  62#define MAX_MGMT_VERSION        8
  63#define MAX_MGMT_OUI            8
  64#define MAX_MGMT_VENDOR_RANGE2  (IB_MGMT_CLASS_VENDOR_RANGE2_END - \
  65                                IB_MGMT_CLASS_VENDOR_RANGE2_START + 1)
  66
  67struct ib_mad_list_head {
  68        struct list_head list;
  69        struct ib_mad_queue *mad_queue;
  70};
  71
  72struct ib_mad_private_header {
  73        struct ib_mad_list_head mad_list;
  74        struct ib_mad_recv_wc recv_wc;
  75        struct ib_wc wc;
  76        DECLARE_PCI_UNMAP_ADDR(mapping)
  77} __attribute__ ((packed));
  78
  79struct ib_mad_private {
  80        struct ib_mad_private_header header;
  81        struct ib_grh grh;
  82        union {
  83                struct ib_mad mad;
  84                struct ib_rmpp_mad rmpp_mad;
  85                struct ib_smp smp;
  86        } mad;
  87} __attribute__ ((packed));
  88
  89struct ib_rmpp_segment {
  90        struct list_head list;
  91        u32 num;
  92        u8 data[0];
  93};
  94
  95struct ib_mad_agent_private {
  96        struct list_head agent_list;
  97        struct ib_mad_agent agent;
  98        struct ib_mad_reg_req *reg_req;
  99        struct ib_mad_qp_info *qp_info;
 100
 101        spinlock_t lock;
 102        struct list_head send_list;
 103        struct list_head wait_list;
 104        struct list_head done_list;
 105        struct work_struct timed_work;
 106        unsigned long timeout;
 107        struct list_head local_list;
 108        struct work_struct local_work;
 109        struct list_head rmpp_list;
 110
 111        atomic_t refcount;
 112        struct completion comp;
 113};
 114
 115struct ib_mad_snoop_private {
 116        struct ib_mad_agent agent;
 117        struct ib_mad_qp_info *qp_info;
 118        int snoop_index;
 119        int mad_snoop_flags;
 120        atomic_t refcount;
 121        struct completion comp;
 122};
 123
 124struct ib_mad_send_wr_private {
 125        struct ib_mad_list_head mad_list;
 126        struct list_head agent_list;
 127        struct ib_mad_agent_private *mad_agent_priv;
 128        struct ib_mad_send_buf send_buf;
 129        DECLARE_PCI_UNMAP_ADDR(header_mapping)
 130        DECLARE_PCI_UNMAP_ADDR(payload_mapping)
 131        struct ib_send_wr send_wr;
 132        struct ib_sge sg_list[IB_MAD_SEND_REQ_MAX_SG];
 133        __be64 tid;
 134        unsigned long timeout;
 135        int retries;
 136        int retry;
 137        int refcount;
 138        enum ib_wc_status status;
 139
 140        /* RMPP control */
 141        struct list_head rmpp_list;
 142        struct ib_rmpp_segment *last_ack_seg;
 143        struct ib_rmpp_segment *cur_seg;
 144        int last_ack;
 145        int seg_num;
 146        int newwin;
 147        int pad;
 148};
 149
 150struct ib_mad_local_private {
 151        struct list_head completion_list;
 152        struct ib_mad_private *mad_priv;
 153        struct ib_mad_agent_private *recv_mad_agent;
 154        struct ib_mad_send_wr_private *mad_send_wr;
 155};
 156
 157struct ib_mad_mgmt_method_table {
 158        struct ib_mad_agent_private *agent[IB_MGMT_MAX_METHODS];
 159};
 160
 161struct ib_mad_mgmt_class_table {
 162        struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_CLASS];
 163};
 164
 165struct ib_mad_mgmt_vendor_class {
 166        u8      oui[MAX_MGMT_OUI][3];
 167        struct ib_mad_mgmt_method_table *method_table[MAX_MGMT_OUI];
 168};
 169
 170struct ib_mad_mgmt_vendor_class_table {
 171        struct ib_mad_mgmt_vendor_class *vendor_class[MAX_MGMT_VENDOR_RANGE2];
 172};
 173
 174struct ib_mad_mgmt_version_table {
 175        struct ib_mad_mgmt_class_table *class;
 176        struct ib_mad_mgmt_vendor_class_table *vendor;
 177};
 178
 179struct ib_mad_queue {
 180        spinlock_t lock;
 181        struct list_head list;
 182        int count;
 183        int max_active;
 184        struct ib_mad_qp_info *qp_info;
 185};
 186
 187struct ib_mad_qp_info {
 188        struct ib_mad_port_private *port_priv;
 189        struct ib_qp *qp;
 190        struct ib_mad_queue send_queue;
 191        struct ib_mad_queue recv_queue;
 192        struct list_head overflow_list;
 193        spinlock_t snoop_lock;
 194        struct ib_mad_snoop_private **snoop_table;
 195        int snoop_table_size;
 196        atomic_t snoop_count;
 197};
 198
 199struct ib_mad_port_private {
 200        struct list_head port_list;
 201        struct ib_device *device;
 202        int port_num;
 203        struct ib_cq *cq;
 204        struct ib_pd *pd;
 205        struct ib_mr *mr;
 206
 207        spinlock_t reg_lock;
 208        struct ib_mad_mgmt_version_table version[MAX_MGMT_VERSION];
 209        struct list_head agent_list;
 210        struct workqueue_struct *wq;
 211        struct work_struct work;
 212        struct ib_mad_qp_info qp_info[IB_MAD_QPS_CORE];
 213};
 214
 215int ib_send_mad(struct ib_mad_send_wr_private *mad_send_wr);
 216
 217struct ib_mad_send_wr_private *
 218ib_find_send_mad(struct ib_mad_agent_private *mad_agent_priv,
 219                 struct ib_mad_recv_wc *mad_recv_wc);
 220
 221void ib_mad_complete_send_wr(struct ib_mad_send_wr_private *mad_send_wr,
 222                             struct ib_mad_send_wc *mad_send_wc);
 223
 224void ib_mark_mad_done(struct ib_mad_send_wr_private *mad_send_wr);
 225
 226void ib_reset_mad_timeout(struct ib_mad_send_wr_private *mad_send_wr,
 227                          int timeout_ms);
 228
 229#endif  /* __IB_MAD_PRIV_H__ */
 230