1202879Srdivacky/* 2202879Srdivacky * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. 3202879Srdivacky * Copyright (c) 2005 Mellanox Technologies. All rights reserved. 4202879Srdivacky * 5202879Srdivacky * This software is available to you under a choice of one of two 6202879Srdivacky * licenses. You may choose to be licensed under the terms of the GNU 7202879Srdivacky * General Public License (GPL) Version 2, available from the file 8202879Srdivacky * COPYING in the main directory of this source tree, or the 9202879Srdivacky * OpenIB.org BSD license below: 10202879Srdivacky * 11202879Srdivacky * Redistribution and use in source and binary forms, with or 12202879Srdivacky * without modification, are permitted provided that the following 13202879Srdivacky * conditions are met: 14202879Srdivacky * 15202879Srdivacky * - Redistributions of source code must retain the above 16202879Srdivacky * copyright notice, this list of conditions and the following 17202879Srdivacky * disclaimer. 18249423Sdim * 19249423Sdim * - Redistributions in binary form must reproduce the above 20249423Sdim * copyright notice, this list of conditions and the following 21249423Sdim * disclaimer in the documentation and/or other materials 22202879Srdivacky * provided with the distribution. 23202879Srdivacky * 24202879Srdivacky * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25202879Srdivacky * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26202879Srdivacky * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27202879Srdivacky * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28202879Srdivacky * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29203955Srdivacky * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30249423Sdim * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31202879Srdivacky * SOFTWARE. 32202879Srdivacky */ 33202879Srdivacky 34202879Srdivacky#include "ipoib.h" 35202879Srdivacky#include <linux/ethtool.h> 36249423Sdim 37208600Srdivackyint ipoib_mcast_attach(struct ipoib_dev_priv *priv, u16 mlid, union ib_gid *mgid, int set_qkey) 38202879Srdivacky{ 39202879Srdivacky struct ib_qp_attr *qp_attr = NULL; 40202879Srdivacky int ret; 41208600Srdivacky u16 pkey_index; 42208600Srdivacky 43208600Srdivacky if (ib_find_pkey(priv->ca, priv->port, priv->pkey, &pkey_index)) { 44202879Srdivacky clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 45202879Srdivacky ret = -ENXIO; 46202879Srdivacky goto out; 47202879Srdivacky } 48202879Srdivacky set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 49202879Srdivacky 50202879Srdivacky if (set_qkey) { 51202879Srdivacky ret = -ENOMEM; 52202879Srdivacky qp_attr = kmalloc(sizeof *qp_attr, GFP_KERNEL); 53203955Srdivacky if (!qp_attr) 54263508Sdim goto out; 55203955Srdivacky 56207632Srdivacky /* set correct QKey for QP */ 57205408Srdivacky qp_attr->qkey = priv->qkey; 58202879Srdivacky ret = ib_modify_qp(priv->qp, qp_attr, IB_QP_QKEY); 59202879Srdivacky if (ret) { 60202879Srdivacky ipoib_warn(priv, "failed to modify QP, ret = %d\n", ret); 61202879Srdivacky goto out; 62202879Srdivacky } 63202879Srdivacky } 64202879Srdivacky 65202879Srdivacky /* attach QP to multicast group */ 66202879Srdivacky ret = ib_attach_mcast(priv->qp, mgid, mlid); 67202879Srdivacky if (ret) 68202879Srdivacky ipoib_warn(priv, "failed to attach to multicast group, ret = %d\n", ret); 69202879Srdivacky 70202879Srdivackyout: 71202879Srdivacky kfree(qp_attr); 72202879Srdivacky return ret; 73202879Srdivacky} 74202879Srdivacky 75202879Srdivackyint ipoib_init_qp(struct ipoib_dev_priv *priv) 76202879Srdivacky{ 77202879Srdivacky int ret; 78202879Srdivacky struct ib_qp_attr qp_attr; 79202879Srdivacky int attr_mask; 80202879Srdivacky 81202879Srdivacky if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) 82202879Srdivacky return -1; 83202879Srdivacky 84202879Srdivacky qp_attr.qp_state = IB_QPS_INIT; 85202879Srdivacky qp_attr.qkey = 0; 86202879Srdivacky qp_attr.port_num = priv->port; 87202879Srdivacky qp_attr.pkey_index = priv->pkey_index; 88202879Srdivacky attr_mask = 89202879Srdivacky IB_QP_QKEY | 90202879Srdivacky IB_QP_PORT | 91202879Srdivacky IB_QP_PKEY_INDEX | 92263508Sdim IB_QP_STATE; 93202879Srdivacky ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); 94249423Sdim if (ret) { 95202879Srdivacky ipoib_warn(priv, "failed to modify QP to init, ret = %d\n", ret); 96202879Srdivacky goto out_fail; 97202879Srdivacky } 98202879Srdivacky 99202879Srdivacky qp_attr.qp_state = IB_QPS_RTR; 100202879Srdivacky /* Can't set this in a INIT->RTR transition */ 101243830Sdim attr_mask &= ~IB_QP_PORT; 102202879Srdivacky ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); 103202879Srdivacky if (ret) { 104202879Srdivacky ipoib_warn(priv, "failed to modify QP to RTR, ret = %d\n", ret); 105202879Srdivacky goto out_fail; 106202879Srdivacky } 107202879Srdivacky 108202879Srdivacky qp_attr.qp_state = IB_QPS_RTS; 109202879Srdivacky qp_attr.sq_psn = 0; 110202879Srdivacky attr_mask |= IB_QP_SQ_PSN; 111202879Srdivacky attr_mask &= ~IB_QP_PKEY_INDEX; 112202879Srdivacky ret = ib_modify_qp(priv->qp, &qp_attr, attr_mask); 113202879Srdivacky if (ret) { 114202879Srdivacky ipoib_warn(priv, "failed to modify QP to RTS, ret = %d\n", ret); 115202879Srdivacky goto out_fail; 116202879Srdivacky } 117202879Srdivacky 118202879Srdivacky return 0; 119202879Srdivacky 120203955Srdivackyout_fail: 121202879Srdivacky qp_attr.qp_state = IB_QPS_RESET; 122202879Srdivacky if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE)) 123202879Srdivacky ipoib_warn(priv, "Failed to modify QP to RESET state\n"); 124202879Srdivacky 125202879Srdivacky return ret; 126202879Srdivacky} 127202879Srdivacky 128203955Srdivackyint ipoib_transport_dev_init(struct ipoib_dev_priv *priv, struct ib_device *ca) 129203955Srdivacky{ 130202879Srdivacky struct ib_qp_init_attr init_attr = { 131202879Srdivacky .cap = { 132202879Srdivacky .max_send_wr = ipoib_sendq_size, 133202879Srdivacky .max_recv_wr = ipoib_recvq_size, 134202879Srdivacky .max_send_sge = 1, 135202879Srdivacky .max_recv_sge = IPOIB_UD_RX_SG 136203955Srdivacky }, 137202879Srdivacky .sq_sig_type = IB_SIGNAL_ALL_WR, 138202879Srdivacky .qp_type = IB_QPT_UD 139202879Srdivacky }; 140203955Srdivacky 141202879Srdivacky int ret, size; 142202879Srdivacky int i; 143263508Sdim /* XXX struct ethtool_coalesce *coal; */ 144203955Srdivacky 145263508Sdim priv->pd = ib_alloc_pd(priv->ca); 146202879Srdivacky if (IS_ERR(priv->pd)) { 147203955Srdivacky printk(KERN_WARNING "%s: failed to allocate PD\n", ca->name); 148203955Srdivacky return -ENODEV; 149203955Srdivacky } 150203955Srdivacky 151202879Srdivacky priv->mr = ib_get_dma_mr(priv->pd, IB_ACCESS_LOCAL_WRITE); 152202879Srdivacky if (IS_ERR(priv->mr)) { 153202879Srdivacky printk(KERN_WARNING "%s: ib_get_dma_mr failed\n", ca->name); 154202879Srdivacky goto out_free_pd; 155202879Srdivacky } 156202879Srdivacky 157202879Srdivacky size = ipoib_recvq_size + 1; 158202879Srdivacky ret = ipoib_cm_dev_init(priv); 159202879Srdivacky if (!ret) { 160202879Srdivacky size += ipoib_sendq_size; 161203955Srdivacky if (ipoib_cm_has_srq(priv)) 162203955Srdivacky size += ipoib_recvq_size + 1; /* 1 extra for rx_drain_qp */ 163202879Srdivacky else 164202879Srdivacky size += ipoib_recvq_size * ipoib_max_conn_qp; 165202879Srdivacky } 166202879Srdivacky 167202879Srdivacky priv->recv_cq = ib_create_cq(priv->ca, ipoib_ib_completion, NULL, priv, size, 0); 168202879Srdivacky if (IS_ERR(priv->recv_cq)) { 169202879Srdivacky printk(KERN_WARNING "%s: failed to create receive CQ\n", ca->name); 170202879Srdivacky goto out_free_mr; 171202879Srdivacky } 172202879Srdivacky 173202879Srdivacky priv->send_cq = ib_create_cq(priv->ca, ipoib_send_comp_handler, NULL, 174202879Srdivacky priv, ipoib_sendq_size, 0); 175263508Sdim if (IS_ERR(priv->send_cq)) { 176202879Srdivacky printk(KERN_WARNING "%s: failed to create send CQ\n", ca->name); 177202879Srdivacky goto out_free_recv_cq; 178226633Sdim } 179202879Srdivacky 180202879Srdivacky if (ib_req_notify_cq(priv->recv_cq, IB_CQ_NEXT_COMP)) 181202879Srdivacky goto out_free_send_cq; 182202879Srdivacky 183202879Srdivacky#if 0 184202879Srdivacky /* XXX */ 185 coal = kzalloc(sizeof *coal, GFP_KERNEL); 186 if (coal) { 187 coal->rx_coalesce_usecs = 10; 188 coal->tx_coalesce_usecs = 10; 189 coal->rx_max_coalesced_frames = 16; 190 coal->tx_max_coalesced_frames = 16; 191 dev->ethtool_ops->set_coalesce(dev, coal); 192 kfree(coal); 193 } 194#endif 195 196 init_attr.send_cq = priv->send_cq; 197 init_attr.recv_cq = priv->recv_cq; 198 199 if (priv->hca_caps & IB_DEVICE_UD_TSO) 200 init_attr.create_flags |= IB_QP_CREATE_IPOIB_UD_LSO; 201 202 if (priv->hca_caps & IB_DEVICE_BLOCK_MULTICAST_LOOPBACK) 203 init_attr.create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK; 204 205 init_attr.cap.max_send_sge = IPOIB_UD_TX_SG; 206 207 priv->qp = ib_create_qp(priv->pd, &init_attr); 208 if (IS_ERR(priv->qp)) { 209 printk(KERN_WARNING "%s: failed to create QP\n", ca->name); 210 goto out_free_send_cq; 211 } 212 213 IF_LLADDR(priv->dev)[1] = (priv->qp->qp_num >> 16) & 0xff; 214 IF_LLADDR(priv->dev)[2] = (priv->qp->qp_num >> 8) & 0xff; 215 IF_LLADDR(priv->dev)[3] = (priv->qp->qp_num ) & 0xff; 216 217 for (i = 0; i < IPOIB_MAX_TX_SG; ++i) 218 priv->tx_sge[i].lkey = priv->mr->lkey; 219 220 priv->tx_wr.opcode = IB_WR_SEND; 221 priv->tx_wr.sg_list = priv->tx_sge; 222 priv->tx_wr.send_flags = IB_SEND_SIGNALED; 223 224 for (i = 0; i < IPOIB_UD_RX_SG; ++i) 225 priv->rx_sge[i].lkey = priv->mr->lkey; 226 priv->rx_wr.next = NULL; 227 priv->rx_wr.sg_list = priv->rx_sge; 228 229 return 0; 230 231out_free_send_cq: 232 ib_destroy_cq(priv->send_cq); 233 234out_free_recv_cq: 235 ib_destroy_cq(priv->recv_cq); 236 237out_free_mr: 238 ib_dereg_mr(priv->mr); 239 ipoib_cm_dev_cleanup(priv); 240 241out_free_pd: 242 ib_dealloc_pd(priv->pd); 243 return -ENODEV; 244} 245 246void ipoib_transport_dev_cleanup(struct ipoib_dev_priv *priv) 247{ 248 249 if (priv->qp) { 250 if (ib_destroy_qp(priv->qp)) 251 ipoib_warn(priv, "ib_qp_destroy failed\n"); 252 253 priv->qp = NULL; 254 clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags); 255 } 256 257 if (ib_destroy_cq(priv->send_cq)) 258 ipoib_warn(priv, "ib_cq_destroy (send) failed\n"); 259 260 if (ib_destroy_cq(priv->recv_cq)) 261 ipoib_warn(priv, "ib_cq_destroy (recv) failed\n"); 262 263 ipoib_cm_dev_cleanup(priv); 264 265 if (ib_dereg_mr(priv->mr)) 266 ipoib_warn(priv, "ib_dereg_mr failed\n"); 267 268 if (ib_dealloc_pd(priv->pd)) 269 ipoib_warn(priv, "ib_dealloc_pd failed\n"); 270} 271 272void ipoib_event(struct ib_event_handler *handler, 273 struct ib_event *record) 274{ 275 struct ipoib_dev_priv *priv = 276 container_of(handler, struct ipoib_dev_priv, event_handler); 277 278 if (record->element.port_num != priv->port) 279 return; 280 281 ipoib_dbg(priv, "Event %d on device %s port %d\n", record->event, 282 record->device->name, record->element.port_num); 283 284 if (record->event == IB_EVENT_SM_CHANGE || 285 record->event == IB_EVENT_CLIENT_REREGISTER) { 286 queue_work(ipoib_workqueue, &priv->flush_light); 287 } else if (record->event == IB_EVENT_PORT_ERR || 288 record->event == IB_EVENT_PORT_ACTIVE || 289 record->event == IB_EVENT_LID_CHANGE) { 290 queue_work(ipoib_workqueue, &priv->flush_normal); 291 } else if (record->event == IB_EVENT_PKEY_CHANGE) { 292 queue_work(ipoib_workqueue, &priv->flush_heavy); 293 } 294} 295