1 /* 2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005 Mellanox Technologies. 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 34 #include "ipoib.h" 35 36 int ipoib_mcast_attach(struct ipoib_dev_priv *priv, u16 mlid, union ib_gid *mgid, int set_qkey) 37 { 38 struct ib_qp_attr *qp_attr = NULL; 39 int ret; 40 u16 pkey_index; 41 42 if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) { 43 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 44 ret = -ENXIO; 45 goto out; 46 } 47 set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 48 49 if (set_qkey) { 50 ret = -ENOMEM; 51 qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL); 52 if (!qp_attr) 53 goto out; 54 55 /* set correct QKey for QP */ 56 qp_attr->qkey = priv->qkey; 57 ret = ib_modify_qp(priv->qp, qp_attr, IB_QP_QKEY); 58 if (ret) { 59 ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret); 60 goto out; 61 } 62 } 63 64 /* attach QP to multicast group */ 65 ret = ib_attach_mcast(priv->qp, mgid, mlid); 66 if (ret) 67 ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret); 68 69 out: 70 kfree(qp_attr); 71 return ret; 72 } 73 74 int ipoib_init_qp(struct ipoib_dev_priv *priv) 75 { 76 int ret; 77 struct ib_qp_attr qp_attr; 78 int attr_mask; 79 80 if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) 81 return -1; 82 83 qp_attr.qp_state = IB_QPS_INIT; 84 qp_attr.qkey = 0; 85 qp_attr.port_num = priv->port; 86 qp_attr.pkey_index = priv->pkey_index; 87 attr_mask = 88 IB_QP_QKEY | 89 IB_QP_PORT | 90 IB_QP_PKEY_INDEX | 91 IB_QP_STATE; 92 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); 93 if (ret) { 94 ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret); 95 goto out_fail; 96 } 97 98 qp_attr.qp_state = IB_QPS_RTR; 99 /* Can't set this in a INIT->RTR transition */ 100 attr_mask &= ~IB_QP_PORT; 101 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); 102 if (ret) { 103 ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret); 104 goto out_fail; 105 } 106 107 qp_attr.qp_state = IB_QPS_RTS; 108 qp_attr.sq_psn = 0; 109 attr_mask |= IB_QP_SQ_PSN; 110 attr_mask &= ~IB_QP_PKEY_INDEX; 111 ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); 112 if (ret) { 113 ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret); 114 goto out_fail; 115 } 116 117 return 0; 118 119 out_fail: 120 qp_attr.qp_state = IB_QPS_RESET; 121 if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE)) 122 ipoib_warn(priv, "Failed to modify QP to RESET state\n"); 123 124 return ret; 125 } 126 127 int ipoib_transport_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca) 128 { 129 struct ib_qp_init_attr init_attr = { 130 .cap = { 131 .max_send_wr = ipoib_sendq_size, 132 .max_recv_wr = ipoib_recvq_size, 133 .max_send_sge = 1, 134 .max_recv_sge = IPOIB_UD_RX_SG 135 }, 136 .sq_sig_type = IB_SIGNAL_ALL_WR, 137 .qp_type = IB_QPT_UD 138 }; 139 140 int ret, size; 141 int i; 142 /* XXX struct ethtool_coalesce *coal; */ 143 144 priv->pd = ib_alloc_pd(priv->ca); 145 if (IS_ERR(priv->pd)) { 146 printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name); 147 return -ENODEV; 148 } 149 150 priv->mr = ib_get_dma_mr(priv->pd, IB_ACCESS_LOCAL_WRITE); 151 if (IS_ERR(priv->mr)) { 152 printk(KERN_WARNING "%s: ib_get_dma_mr failed\n", ca->name); 153 goto out_free_pd; 154 } 155 156 size = ipoib_recvq_size + 1; 157 ret = ipoib_cm_dev_init(priv); 158 if (!ret) { 159 size += ipoib_sendq_size; 160 if (ipoib_cm_has_srq(priv)) 161 size += ipoib_recvq_size + 1; /* 1 extra for rx_drain_qp */ 162 else 163 size += ipoib_recvq_size * ipoib_max_conn_qp; 164 } 165 166 priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, priv, size, 0); 167 if (IS_ERR(priv->recv_cq)) { 168 printk(KERN_WARNING "%s: failed to create receive CQ\n", ca->name); 169 goto out_free_mr; 170 } 171 172 priv->send_cq = ib_create_cq(priv->ca, ipoib_send_comp_handler, NULL, 173 priv, ipoib_sendq_size, 0); 174 if (IS_ERR(priv->send_cq)) { 175 printk(KERN_WARNING "%s: failed to create send CQ\n", ca->name); 176 goto out_free_recv_cq; 177 } 178 179 if (ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP)) 180 goto out_free_send_cq; 181 182 #if 0 183 /* XXX */ 184 coal = kzalloc(sizeof *coal, GFP_KERNEL); 185 if (coal) { 186 coal->rx_coalesce_usecs = 10; 187 coal->tx_coalesce_usecs = 10; 188 coal->rx_max_coalesced_frames = 16; 189 coal->tx_max_coalesced_frames = 16; 190 dev->ethtool_ops->set_coalesce(dev, coal); 191 kfree(coal); 192 } 193 #endif 194 195 init_attr.send_cq = priv->send_cq; 196 init_attr.recv_cq = priv->recv_cq; 197 198 if (priv->hca_caps & IB_DEVICE_UD_TSO) 199 init_attr.create_flags |= IB_QP_CREATE_IPOIB_UD_LSO; 200 201 if (priv->hca_caps & IB_DEVICE_BLOCK_MULTICAST_LOOPBACK) 202 init_attr.create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK; 203 204 init_attr.cap.max_send_sge = IPOIB_UD_TX_SG; 205 206 priv->qp = ib_create_qp(priv->pd, &init_attr); 207 if (IS_ERR(priv->qp)) { 208 printk(KERN_WARNING "%s: failed to create QP\n", ca->name); 209 goto out_free_send_cq; 210 } 211 212 IF_LLADDR(priv->dev)[1] = (priv->qp->qp_num >> 16) & 0xff; 213 IF_LLADDR(priv->dev)[2] = (priv->qp->qp_num >> 8) & 0xff; 214 IF_LLADDR(priv->dev)[3] = (priv->qp->qp_num ) & 0xff; 215 216 for (i = 0; i < IPOIB_MAX_TX_SG; ++i) 217 priv->tx_sge[i].lkey = priv->mr->lkey; 218 219 priv->tx_wr.opcode = IB_WR_SEND; 220 priv->tx_wr.sg_list = priv->tx_sge; 221 priv->tx_wr.send_flags = IB_SEND_SIGNALED; 222 223 for (i = 0; i < IPOIB_UD_RX_SG; ++i) 224 priv->rx_sge[i].lkey = priv->mr->lkey; 225 priv->rx_wr.next = NULL; 226 priv->rx_wr.sg_list = priv->rx_sge; 227 228 return 0; 229 230 out_free_send_cq: 231 ib_destroy_cq(priv->send_cq); 232 233 out_free_recv_cq: 234 ib_destroy_cq(priv->recv_cq); 235 236 out_free_mr: 237 ib_dereg_mr(priv->mr); 238 ipoib_cm_dev_cleanup(priv); 239 240 out_free_pd: 241 ib_dealloc_pd(priv->pd); 242 return -ENODEV; 243 } 244 245 void ipoib_transport_dev_cleanup(struct ipoib_dev_priv *priv) 246 { 247 248 if (priv->qp) { 249 if (ib_destroy_qp(priv->qp)) 250 ipoib_warn(priv, "ib_qp_destroy failed\n"); 251 252 priv->qp = NULL; 253 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 254 } 255 256 if (ib_destroy_cq(priv->send_cq)) 257 ipoib_warn(priv, "ib_cq_destroy (send) failed\n"); 258 259 if (ib_destroy_cq(priv->recv_cq)) 260 ipoib_warn(priv, "ib_cq_destroy (recv) failed\n"); 261 262 ipoib_cm_dev_cleanup(priv); 263 264 if (ib_dereg_mr(priv->mr)) 265 ipoib_warn(priv, "ib_dereg_mr failed\n"); 266 267 if (ib_dealloc_pd(priv->pd)) 268 ipoib_warn(priv, "ib_dealloc_pd failed\n"); 269 } 270 271 void ipoib_event(struct ib_event_handler *handler, 272 struct ib_event *record) 273 { 274 struct ipoib_dev_priv *priv = 275 container_of(handler, struct ipoib_dev_priv, event_handler); 276 277 if (record->element.port_num != priv->port) 278 return; 279 280 ipoib_dbg(priv, "Event %d on device %s port %d\n", record->event, 281 record->device->name, record->element.port_num); 282 283 if (record->event == IB_EVENT_SM_CHANGE || 284 record->event == IB_EVENT_CLIENT_REREGISTER) { 285 queue_work(ipoib_workqueue, &priv->flush_light); 286 } else if (record->event == IB_EVENT_PORT_ERR || 287 record->event == IB_EVENT_PORT_ACTIVE || 288 record->event == IB_EVENT_LID_CHANGE) { 289 queue_work(ipoib_workqueue, &priv->flush_normal); 290 } else if (record->event == IB_EVENT_PKEY_CHANGE) { 291 queue_work(ipoib_workqueue, &priv->flush_heavy); 292 } 293 } 294