1 /* 2 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. 3 * Copyright (c) 2007, 2008 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 <linux/module.h> 35 #include <linux/init.h> 36 #include <linux/slab.h> 37 #include <linux/errno.h> 38 #include <linux/netdevice.h> 39 #include <linux/inetdevice.h> 40 #include <linux/rtnetlink.h> 41 #include <linux/if_vlan.h> 42 43 #include <rdma/ib_smi.h> 44 #include <rdma/ib_user_verbs.h> 45 #include <rdma/ib_addr.h> 46 47 #include <linux/mlx4/driver.h> 48 #include <linux/mlx4/cmd.h> 49 50 #include "mlx4_ib.h" 51 #include "user.h" 52 53 #define DRV_NAME MLX4_IB_DRV_NAME 54 #define DRV_VERSION "1.0" 55 #define DRV_RELDATE "April 4, 2008" 56 57 MODULE_AUTHOR("Roland Dreier"); 58 MODULE_DESCRIPTION("Mellanox ConnectX HCA InfiniBand driver"); 59 MODULE_LICENSE("Dual BSD/GPL"); 60 MODULE_VERSION(DRV_VERSION); 61 62 int mlx4_ib_sm_guid_assign = 1; 63 module_param_named(sm_guid_assign, mlx4_ib_sm_guid_assign, int, 0444); 64 MODULE_PARM_DESC(sm_guid_assign, "Enable SM alias_GUID assignment if sm_guid_assign > 0 (Default: 1)"); 65 66 static const char mlx4_ib_version[] = 67 DRV_NAME ": Mellanox ConnectX InfiniBand driver v" 68 DRV_VERSION " (" DRV_RELDATE ")\n"; 69 70 struct update_gid_work { 71 struct work_struct work; 72 union ib_gid gids[128]; 73 struct mlx4_ib_dev *dev; 74 int port; 75 }; 76 77 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init); 78 79 static struct workqueue_struct *wq; 80 81 static void init_query_mad(struct ib_smp *mad) 82 { 83 mad->base_version = 1; 84 mad->mgmt_class = IB_MGMT_CLASS_SUBN_LID_ROUTED; 85 mad->class_version = 1; 86 mad->method = IB_MGMT_METHOD_GET; 87 } 88 89 static union ib_gid zgid; 90 91 static int mlx4_ib_query_device(struct ib_device *ibdev, 92 struct ib_device_attr *props) 93 { 94 struct mlx4_ib_dev *dev = to_mdev(ibdev); 95 struct ib_smp *in_mad = NULL; 96 struct ib_smp *out_mad = NULL; 97 int err = -ENOMEM; 98 99 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 100 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 101 if (!in_mad || !out_mad) 102 goto out; 103 104 init_query_mad(in_mad); 105 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 106 107 err = mlx4_MAD_IFC(to_mdev(ibdev), MLX4_MAD_IFC_IGNORE_KEYS, 108 1, NULL, NULL, in_mad, out_mad); 109 if (err) 110 goto out; 111 112 memset(props, 0, sizeof *props); 113 114 props->fw_ver = dev->dev->caps.fw_ver; 115 props->device_cap_flags = IB_DEVICE_CHANGE_PHY_PORT | 116 IB_DEVICE_PORT_ACTIVE_EVENT | 117 IB_DEVICE_SYS_IMAGE_GUID | 118 IB_DEVICE_RC_RNR_NAK_GEN | 119 IB_DEVICE_BLOCK_MULTICAST_LOOPBACK; 120 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_PKEY_CNTR) 121 props->device_cap_flags |= IB_DEVICE_BAD_PKEY_CNTR; 122 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BAD_QKEY_CNTR) 123 props->device_cap_flags |= IB_DEVICE_BAD_QKEY_CNTR; 124 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_APM) 125 props->device_cap_flags |= IB_DEVICE_AUTO_PATH_MIG; 126 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_UD_AV_PORT) 127 props->device_cap_flags |= IB_DEVICE_UD_AV_PORT_ENFORCE; 128 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_IPOIB_CSUM) 129 props->device_cap_flags |= IB_DEVICE_UD_IP_CSUM; 130 if (dev->dev->caps.max_gso_sz && dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_BLH) 131 props->device_cap_flags |= IB_DEVICE_UD_TSO; 132 if (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_RESERVED_LKEY) 133 props->device_cap_flags |= IB_DEVICE_LOCAL_DMA_LKEY; 134 if ((dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_LOCAL_INV) && 135 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_REMOTE_INV) && 136 (dev->dev->caps.bmme_flags & MLX4_BMME_FLAG_FAST_REG_WR)) 137 props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 138 if (dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) 139 props->device_cap_flags |= IB_DEVICE_XRC; 140 141 props->vendor_id = be32_to_cpup((__be32 *) (out_mad->data + 36)) & 142 0xffffff; 143 props->vendor_part_id = dev->dev->pdev->device; 144 props->hw_ver = be32_to_cpup((__be32 *) (out_mad->data + 32)); 145 memcpy(&props->sys_image_guid, out_mad->data + 4, 8); 146 147 props->max_mr_size = ~0ull; 148 props->page_size_cap = dev->dev->caps.page_size_cap; 149 props->max_qp = dev->dev->caps.num_qps - dev->dev->caps.reserved_qps; 150 props->max_qp_wr = dev->dev->caps.max_wqes - MLX4_IB_SQ_MAX_SPARE; 151 props->max_sge = min(dev->dev->caps.max_sq_sg, 152 dev->dev->caps.max_rq_sg); 153 props->max_cq = dev->dev->caps.num_cqs - dev->dev->caps.reserved_cqs; 154 props->max_cqe = dev->dev->caps.max_cqes; 155 props->max_mr = dev->dev->caps.num_mpts - dev->dev->caps.reserved_mrws; 156 props->max_pd = dev->dev->caps.num_pds - dev->dev->caps.reserved_pds; 157 props->max_qp_rd_atom = dev->dev->caps.max_qp_dest_rdma; 158 props->max_qp_init_rd_atom = dev->dev->caps.max_qp_init_rdma; 159 props->max_res_rd_atom = props->max_qp_rd_atom * props->max_qp; 160 props->max_srq = dev->dev->caps.num_srqs - dev->dev->caps.reserved_srqs; 161 props->max_srq_wr = dev->dev->caps.max_srq_wqes - 1; 162 props->max_srq_sge = dev->dev->caps.max_srq_sge; 163 props->max_fast_reg_page_list_len = MLX4_MAX_FAST_REG_PAGES; 164 props->local_ca_ack_delay = dev->dev->caps.local_ca_ack_delay; 165 props->atomic_cap = dev->dev->caps.flags & MLX4_DEV_CAP_FLAG_ATOMIC ? 166 IB_ATOMIC_HCA : IB_ATOMIC_NONE; 167 props->masked_atomic_cap = props->atomic_cap; 168 props->max_pkeys = dev->dev->caps.pkey_table_len[1]; 169 props->max_mcast_grp = dev->dev->caps.num_mgms + dev->dev->caps.num_amgms; 170 props->max_mcast_qp_attach = dev->dev->caps.num_qp_per_mgm; 171 props->max_total_mcast_qp_attach = props->max_mcast_qp_attach * 172 props->max_mcast_grp; 173 props->max_map_per_fmr = dev->dev->caps.max_fmr_maps; 174 175 out: 176 kfree(in_mad); 177 kfree(out_mad); 178 179 return err; 180 } 181 182 static enum rdma_link_layer 183 mlx4_ib_port_link_layer(struct ib_device *device, u8 port_num) 184 { 185 struct mlx4_dev *dev = to_mdev(device)->dev; 186 187 return dev->caps.port_mask[port_num] == MLX4_PORT_TYPE_IB ? 188 IB_LINK_LAYER_INFINIBAND : IB_LINK_LAYER_ETHERNET; 189 } 190 191 static int ib_link_query_port(struct ib_device *ibdev, u8 port, 192 struct ib_port_attr *props, int netw_view) 193 { 194 struct ib_smp *in_mad = NULL; 195 struct ib_smp *out_mad = NULL; 196 int ext_active_speed; 197 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 198 int err = -ENOMEM; 199 200 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 201 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 202 if (!in_mad || !out_mad) 203 goto out; 204 205 init_query_mad(in_mad); 206 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 207 in_mad->attr_mod = cpu_to_be32(port); 208 209 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 210 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 211 212 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 213 in_mad, out_mad); 214 if (err) 215 goto out; 216 217 218 props->lid = be16_to_cpup((__be16 *) (out_mad->data + 16)); 219 props->lmc = out_mad->data[34] & 0x7; 220 props->sm_lid = be16_to_cpup((__be16 *) (out_mad->data + 18)); 221 props->sm_sl = out_mad->data[36] & 0xf; 222 props->state = out_mad->data[32] & 0xf; 223 props->phys_state = out_mad->data[33] >> 4; 224 props->port_cap_flags = be32_to_cpup((__be32 *) (out_mad->data + 20)); 225 if (netw_view) 226 props->gid_tbl_len = out_mad->data[50]; 227 else 228 props->gid_tbl_len = to_mdev(ibdev)->dev->caps.gid_table_len[port]; 229 props->max_msg_sz = to_mdev(ibdev)->dev->caps.max_msg_sz; 230 props->pkey_tbl_len = to_mdev(ibdev)->dev->caps.pkey_table_len[port]; 231 props->bad_pkey_cntr = be16_to_cpup((__be16 *) (out_mad->data + 46)); 232 props->qkey_viol_cntr = be16_to_cpup((__be16 *) (out_mad->data + 48)); 233 props->active_width = out_mad->data[31] & 0xf; 234 props->active_speed = out_mad->data[35] >> 4; 235 props->max_mtu = out_mad->data[41] & 0xf; 236 props->active_mtu = out_mad->data[36] >> 4; 237 props->subnet_timeout = out_mad->data[51] & 0x1f; 238 props->max_vl_num = out_mad->data[37] >> 4; 239 props->init_type_reply = out_mad->data[41] >> 4; 240 241 /* Check if extended speeds (EDR/FDR/...) are supported */ 242 if (props->port_cap_flags & IB_PORT_EXTENDED_SPEEDS_SUP) { 243 ext_active_speed = out_mad->data[62] >> 4; 244 245 switch (ext_active_speed) { 246 case 1: 247 props->active_speed = IB_SPEED_FDR; 248 break; 249 case 2: 250 props->active_speed = IB_SPEED_EDR; 251 break; 252 } 253 } 254 255 /* If reported active speed is QDR, check if is FDR-10 */ 256 if (props->active_speed == IB_SPEED_QDR) { 257 init_query_mad(in_mad); 258 in_mad->attr_id = MLX4_ATTR_EXTENDED_PORT_INFO; 259 in_mad->attr_mod = cpu_to_be32(port); 260 261 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, 262 NULL, NULL, in_mad, out_mad); 263 if (err) 264 goto out; 265 266 /* Checking LinkSpeedActive for FDR-10 */ 267 if (out_mad->data[15] & 0x1) 268 props->active_speed = IB_SPEED_FDR10; 269 } 270 271 /* Avoid wrong speed value returned by FW if the IB link is down. */ 272 if (props->state == IB_PORT_DOWN) 273 props->active_speed = IB_SPEED_SDR; 274 275 out: 276 kfree(in_mad); 277 kfree(out_mad); 278 return err; 279 } 280 281 static u8 state_to_phys_state(enum ib_port_state state) 282 { 283 return state == IB_PORT_ACTIVE ? 5 : 3; 284 } 285 286 static int eth_link_query_port(struct ib_device *ibdev, u8 port, 287 struct ib_port_attr *props, int netw_view) 288 { 289 290 struct mlx4_ib_dev *mdev = to_mdev(ibdev); 291 struct mlx4_ib_iboe *iboe = &mdev->iboe; 292 struct net_device *ndev; 293 enum ib_mtu tmp; 294 struct mlx4_cmd_mailbox *mailbox; 295 int err = 0; 296 297 mailbox = mlx4_alloc_cmd_mailbox(mdev->dev); 298 if (IS_ERR(mailbox)) 299 return PTR_ERR(mailbox); 300 301 err = mlx4_cmd_box(mdev->dev, 0, mailbox->dma, port, 0, 302 MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B, 303 MLX4_CMD_WRAPPED); 304 if (err) 305 goto out; 306 307 props->active_width = (((u8 *)mailbox->buf)[5] == 0x40) ? 308 IB_WIDTH_4X : IB_WIDTH_1X; 309 props->active_speed = IB_SPEED_QDR; 310 props->port_cap_flags = IB_PORT_CM_SUP; 311 props->gid_tbl_len = mdev->dev->caps.gid_table_len[port]; 312 props->max_msg_sz = mdev->dev->caps.max_msg_sz; 313 props->pkey_tbl_len = 1; 314 props->max_mtu = IB_MTU_4096; 315 props->max_vl_num = 2; 316 props->state = IB_PORT_DOWN; 317 props->phys_state = state_to_phys_state(props->state); 318 props->active_mtu = IB_MTU_256; 319 spin_lock(&iboe->lock); 320 ndev = iboe->netdevs[port - 1]; 321 if (!ndev) 322 goto out_unlock; 323 324 tmp = iboe_get_mtu(ndev->mtu); 325 props->active_mtu = tmp ? min(props->max_mtu, tmp) : IB_MTU_256; 326 327 props->state = (netif_running(ndev) && netif_carrier_ok(ndev)) ? 328 IB_PORT_ACTIVE : IB_PORT_DOWN; 329 props->phys_state = state_to_phys_state(props->state); 330 out_unlock: 331 spin_unlock(&iboe->lock); 332 out: 333 mlx4_free_cmd_mailbox(mdev->dev, mailbox); 334 return err; 335 } 336 337 int __mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 338 struct ib_port_attr *props, int netw_view) 339 { 340 int err; 341 342 memset(props, 0, sizeof *props); 343 344 err = mlx4_ib_port_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND ? 345 ib_link_query_port(ibdev, port, props, netw_view) : 346 eth_link_query_port(ibdev, port, props, netw_view); 347 348 return err; 349 } 350 351 static int mlx4_ib_query_port(struct ib_device *ibdev, u8 port, 352 struct ib_port_attr *props) 353 { 354 /* returns host view */ 355 return __mlx4_ib_query_port(ibdev, port, props, 0); 356 } 357 358 int __mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 359 union ib_gid *gid, int netw_view) 360 { 361 struct ib_smp *in_mad = NULL; 362 struct ib_smp *out_mad = NULL; 363 int err = -ENOMEM; 364 struct mlx4_ib_dev *dev = to_mdev(ibdev); 365 int clear = 0; 366 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 367 368 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 369 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 370 if (!in_mad || !out_mad) 371 goto out; 372 373 init_query_mad(in_mad); 374 in_mad->attr_id = IB_SMP_ATTR_PORT_INFO; 375 in_mad->attr_mod = cpu_to_be32(port); 376 377 if (mlx4_is_mfunc(dev->dev) && netw_view) 378 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 379 380 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, NULL, NULL, in_mad, out_mad); 381 if (err) 382 goto out; 383 384 memcpy(gid->raw, out_mad->data + 8, 8); 385 386 if (mlx4_is_mfunc(dev->dev) && !netw_view) { 387 if (index) { 388 /* For any index > 0, return the null guid */ 389 err = 0; 390 clear = 1; 391 goto out; 392 } 393 } 394 395 init_query_mad(in_mad); 396 in_mad->attr_id = IB_SMP_ATTR_GUID_INFO; 397 in_mad->attr_mod = cpu_to_be32(index / 8); 398 399 err = mlx4_MAD_IFC(dev, mad_ifc_flags, port, 400 NULL, NULL, in_mad, out_mad); 401 if (err) 402 goto out; 403 404 memcpy(gid->raw + 8, out_mad->data + (index % 8) * 8, 8); 405 406 out: 407 if (clear) 408 memset(gid->raw + 8, 0, 8); 409 kfree(in_mad); 410 kfree(out_mad); 411 return err; 412 } 413 414 static int iboe_query_gid(struct ib_device *ibdev, u8 port, int index, 415 union ib_gid *gid) 416 { 417 struct mlx4_ib_dev *dev = to_mdev(ibdev); 418 419 *gid = dev->iboe.gid_table[port - 1][index]; 420 421 return 0; 422 } 423 424 static int mlx4_ib_query_gid(struct ib_device *ibdev, u8 port, int index, 425 union ib_gid *gid) 426 { 427 if (rdma_port_get_link_layer(ibdev, port) == IB_LINK_LAYER_INFINIBAND) 428 return __mlx4_ib_query_gid(ibdev, port, index, gid, 0); 429 else 430 return iboe_query_gid(ibdev, port, index, gid); 431 } 432 433 int __mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, 434 u16 *pkey, int netw_view) 435 { 436 struct ib_smp *in_mad = NULL; 437 struct ib_smp *out_mad = NULL; 438 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 439 int err = -ENOMEM; 440 441 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 442 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 443 if (!in_mad || !out_mad) 444 goto out; 445 446 init_query_mad(in_mad); 447 in_mad->attr_id = IB_SMP_ATTR_PKEY_TABLE; 448 in_mad->attr_mod = cpu_to_be32(index / 32); 449 450 if (mlx4_is_mfunc(to_mdev(ibdev)->dev) && netw_view) 451 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 452 453 err = mlx4_MAD_IFC(to_mdev(ibdev), mad_ifc_flags, port, NULL, NULL, 454 in_mad, out_mad); 455 if (err) 456 goto out; 457 458 *pkey = be16_to_cpu(((__be16 *) out_mad->data)[index % 32]); 459 460 out: 461 kfree(in_mad); 462 kfree(out_mad); 463 return err; 464 } 465 466 static int mlx4_ib_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 467 { 468 return __mlx4_ib_query_pkey(ibdev, port, index, pkey, 0); 469 } 470 471 static int mlx4_ib_modify_device(struct ib_device *ibdev, int mask, 472 struct ib_device_modify *props) 473 { 474 struct mlx4_cmd_mailbox *mailbox; 475 unsigned long flags; 476 477 if (mask & ~IB_DEVICE_MODIFY_NODE_DESC) 478 return -EOPNOTSUPP; 479 480 if (!(mask & IB_DEVICE_MODIFY_NODE_DESC)) 481 return 0; 482 483 if (mlx4_is_slave(to_mdev(ibdev)->dev)) 484 return -EOPNOTSUPP; 485 486 spin_lock_irqsave(&to_mdev(ibdev)->sm_lock, flags); 487 memcpy(ibdev->node_desc, props->node_desc, 64); 488 spin_unlock_irqrestore(&to_mdev(ibdev)->sm_lock, flags); 489 490 /* 491 * If possible, pass node desc to FW, so it can generate 492 * a 144 trap. If cmd fails, just ignore. 493 */ 494 mailbox = mlx4_alloc_cmd_mailbox(to_mdev(ibdev)->dev); 495 if (IS_ERR(mailbox)) 496 return 0; 497 498 memset(mailbox->buf, 0, 256); 499 memcpy(mailbox->buf, props->node_desc, 64); 500 mlx4_cmd(to_mdev(ibdev)->dev, mailbox->dma, 1, 0, 501 MLX4_CMD_SET_NODE, MLX4_CMD_TIME_CLASS_A, MLX4_CMD_NATIVE); 502 503 mlx4_free_cmd_mailbox(to_mdev(ibdev)->dev, mailbox); 504 505 return 0; 506 } 507 508 static int mlx4_SET_PORT(struct mlx4_ib_dev *dev, u8 port, int reset_qkey_viols, 509 u32 cap_mask) 510 { 511 struct mlx4_cmd_mailbox *mailbox; 512 int err; 513 u8 is_eth = dev->dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH; 514 515 mailbox = mlx4_alloc_cmd_mailbox(dev->dev); 516 if (IS_ERR(mailbox)) 517 return PTR_ERR(mailbox); 518 519 memset(mailbox->buf, 0, 256); 520 521 if (dev->dev->flags & MLX4_FLAG_OLD_PORT_CMDS) { 522 *(u8 *) mailbox->buf = !!reset_qkey_viols << 6; 523 ((__be32 *) mailbox->buf)[2] = cpu_to_be32(cap_mask); 524 } else { 525 ((u8 *) mailbox->buf)[3] = !!reset_qkey_viols; 526 ((__be32 *) mailbox->buf)[1] = cpu_to_be32(cap_mask); 527 } 528 529 err = mlx4_cmd(dev->dev, mailbox->dma, port, is_eth, MLX4_CMD_SET_PORT, 530 MLX4_CMD_TIME_CLASS_B, MLX4_CMD_NATIVE); 531 532 mlx4_free_cmd_mailbox(dev->dev, mailbox); 533 return err; 534 } 535 536 static int mlx4_ib_modify_port(struct ib_device *ibdev, u8 port, int mask, 537 struct ib_port_modify *props) 538 { 539 struct ib_port_attr attr; 540 u32 cap_mask; 541 int err; 542 543 mutex_lock(&to_mdev(ibdev)->cap_mask_mutex); 544 545 err = mlx4_ib_query_port(ibdev, port, &attr); 546 if (err) 547 goto out; 548 549 cap_mask = (attr.port_cap_flags | props->set_port_cap_mask) & 550 ~props->clr_port_cap_mask; 551 552 err = mlx4_SET_PORT(to_mdev(ibdev), port, 553 !!(mask & IB_PORT_RESET_QKEY_CNTR), 554 cap_mask); 555 556 out: 557 mutex_unlock(&to_mdev(ibdev)->cap_mask_mutex); 558 return err; 559 } 560 561 static struct ib_ucontext *mlx4_ib_alloc_ucontext(struct ib_device *ibdev, 562 struct ib_udata *udata) 563 { 564 struct mlx4_ib_dev *dev = to_mdev(ibdev); 565 struct mlx4_ib_ucontext *context; 566 struct mlx4_ib_alloc_ucontext_resp resp; 567 int err; 568 569 if (!dev->ib_active) 570 return ERR_PTR(-EAGAIN); 571 572 resp.qp_tab_size = dev->dev->caps.num_qps; 573 resp.bf_reg_size = dev->dev->caps.bf_reg_size; 574 resp.bf_regs_per_page = dev->dev->caps.bf_regs_per_page; 575 576 context = kmalloc(sizeof *context, GFP_KERNEL); 577 if (!context) 578 return ERR_PTR(-ENOMEM); 579 580 err = mlx4_uar_alloc(to_mdev(ibdev)->dev, &context->uar); 581 if (err) { 582 kfree(context); 583 return ERR_PTR(err); 584 } 585 586 INIT_LIST_HEAD(&context->db_page_list); 587 mutex_init(&context->db_page_mutex); 588 589 err = ib_copy_to_udata(udata, &resp, sizeof resp); 590 if (err) { 591 mlx4_uar_free(to_mdev(ibdev)->dev, &context->uar); 592 kfree(context); 593 return ERR_PTR(-EFAULT); 594 } 595 596 return &context->ibucontext; 597 } 598 599 static int mlx4_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) 600 { 601 struct mlx4_ib_ucontext *context = to_mucontext(ibcontext); 602 603 mlx4_uar_free(to_mdev(ibcontext->device)->dev, &context->uar); 604 kfree(context); 605 606 return 0; 607 } 608 609 static int mlx4_ib_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 610 { 611 struct mlx4_ib_dev *dev = to_mdev(context->device); 612 613 if (vma->vm_end - vma->vm_start != PAGE_SIZE) 614 return -EINVAL; 615 616 if (vma->vm_pgoff == 0) { 617 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 618 619 if (io_remap_pfn_range(vma, vma->vm_start, 620 to_mucontext(context)->uar.pfn, 621 PAGE_SIZE, vma->vm_page_prot)) 622 return -EAGAIN; 623 } else if (vma->vm_pgoff == 1 && dev->dev->caps.bf_reg_size != 0) { 624 vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot); 625 626 if (io_remap_pfn_range(vma, vma->vm_start, 627 to_mucontext(context)->uar.pfn + 628 dev->dev->caps.num_uars, 629 PAGE_SIZE, vma->vm_page_prot)) 630 return -EAGAIN; 631 } else 632 return -EINVAL; 633 634 return 0; 635 } 636 637 static struct ib_pd *mlx4_ib_alloc_pd(struct ib_device *ibdev, 638 struct ib_ucontext *context, 639 struct ib_udata *udata) 640 { 641 struct mlx4_ib_pd *pd; 642 int err; 643 644 pd = kmalloc(sizeof *pd, GFP_KERNEL); 645 if (!pd) 646 return ERR_PTR(-ENOMEM); 647 648 err = mlx4_pd_alloc(to_mdev(ibdev)->dev, &pd->pdn); 649 if (err) { 650 kfree(pd); 651 return ERR_PTR(err); 652 } 653 654 if (context) 655 if (ib_copy_to_udata(udata, &pd->pdn, sizeof (__u32))) { 656 mlx4_pd_free(to_mdev(ibdev)->dev, pd->pdn); 657 kfree(pd); 658 return ERR_PTR(-EFAULT); 659 } 660 661 return &pd->ibpd; 662 } 663 664 static int mlx4_ib_dealloc_pd(struct ib_pd *pd) 665 { 666 mlx4_pd_free(to_mdev(pd->device)->dev, to_mpd(pd)->pdn); 667 kfree(pd); 668 669 return 0; 670 } 671 672 static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, 673 struct ib_ucontext *context, 674 struct ib_udata *udata) 675 { 676 struct mlx4_ib_xrcd *xrcd; 677 int err; 678 679 if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) 680 return ERR_PTR(-ENOSYS); 681 682 xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); 683 if (!xrcd) 684 return ERR_PTR(-ENOMEM); 685 686 err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); 687 if (err) 688 goto err1; 689 690 xrcd->pd = ib_alloc_pd(ibdev); 691 if (IS_ERR(xrcd->pd)) { 692 err = PTR_ERR(xrcd->pd); 693 goto err2; 694 } 695 696 xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); 697 if (IS_ERR(xrcd->cq)) { 698 err = PTR_ERR(xrcd->cq); 699 goto err3; 700 } 701 702 return &xrcd->ibxrcd; 703 704 err3: 705 ib_dealloc_pd(xrcd->pd); 706 err2: 707 mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); 708 err1: 709 kfree(xrcd); 710 return ERR_PTR(err); 711 } 712 713 static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) 714 { 715 ib_destroy_cq(to_mxrcd(xrcd)->cq); 716 ib_dealloc_pd(to_mxrcd(xrcd)->pd); 717 mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); 718 kfree(xrcd); 719 720 return 0; 721 } 722 723 static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) 724 { 725 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 726 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 727 struct mlx4_ib_gid_entry *ge; 728 729 ge = kzalloc(sizeof *ge, GFP_KERNEL); 730 if (!ge) 731 return -ENOMEM; 732 733 ge->gid = *gid; 734 if (mlx4_ib_add_mc(mdev, mqp, gid)) { 735 ge->port = mqp->port; 736 ge->added = 1; 737 } 738 739 mutex_lock(&mqp->mutex); 740 list_add_tail(&ge->list, &mqp->gid_list); 741 mutex_unlock(&mqp->mutex); 742 743 return 0; 744 } 745 746 int mlx4_ib_add_mc(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp, 747 union ib_gid *gid) 748 { 749 u8 mac[6]; 750 struct net_device *ndev; 751 int ret = 0; 752 753 if (!mqp->port) 754 return 0; 755 756 spin_lock(&mdev->iboe.lock); 757 ndev = mdev->iboe.netdevs[mqp->port - 1]; 758 if (ndev) 759 dev_hold(ndev); 760 spin_unlock(&mdev->iboe.lock); 761 762 if (ndev) { 763 rdma_get_mcast_mac((struct in6_addr *)gid, mac); 764 rtnl_lock(); 765 dev_mc_add(mdev->iboe.netdevs[mqp->port - 1], mac); 766 ret = 1; 767 rtnl_unlock(); 768 dev_put(ndev); 769 } 770 771 return ret; 772 } 773 774 struct mlx4_ib_steering { 775 struct list_head list; 776 u64 reg_id; 777 union ib_gid gid; 778 }; 779 780 static int mlx4_ib_mcg_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 781 { 782 int err; 783 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 784 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 785 u64 reg_id; 786 struct mlx4_ib_steering *ib_steering = NULL; 787 788 if (mdev->dev->caps.steering_mode == 789 MLX4_STEERING_MODE_DEVICE_MANAGED) { 790 ib_steering = kmalloc(sizeof(*ib_steering), GFP_KERNEL); 791 if (!ib_steering) 792 return -ENOMEM; 793 } 794 795 err = mlx4_multicast_attach(mdev->dev, &mqp->mqp, gid->raw, mqp->port, 796 !!(mqp->flags & 797 MLX4_IB_QP_BLOCK_MULTICAST_LOOPBACK), 798 MLX4_PROT_IB_IPV6, ®_id); 799 if (err) 800 goto err_malloc; 801 802 err = add_gid_entry(ibqp, gid); 803 if (err) 804 goto err_add; 805 806 if (ib_steering) { 807 memcpy(ib_steering->gid.raw, gid->raw, 16); 808 ib_steering->reg_id = reg_id; 809 mutex_lock(&mqp->mutex); 810 list_add(&ib_steering->list, &mqp->steering_rules); 811 mutex_unlock(&mqp->mutex); 812 } 813 return 0; 814 815 err_add: 816 mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 817 MLX4_PROT_IB_IPV6, reg_id); 818 err_malloc: 819 kfree(ib_steering); 820 821 return err; 822 } 823 824 static struct mlx4_ib_gid_entry *find_gid_entry(struct mlx4_ib_qp *qp, u8 *raw) 825 { 826 struct mlx4_ib_gid_entry *ge; 827 struct mlx4_ib_gid_entry *tmp; 828 struct mlx4_ib_gid_entry *ret = NULL; 829 830 list_for_each_entry_safe(ge, tmp, &qp->gid_list, list) { 831 if (!memcmp(raw, ge->gid.raw, 16)) { 832 ret = ge; 833 break; 834 } 835 } 836 837 return ret; 838 } 839 840 static int mlx4_ib_mcg_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 841 { 842 int err; 843 struct mlx4_ib_dev *mdev = to_mdev(ibqp->device); 844 struct mlx4_ib_qp *mqp = to_mqp(ibqp); 845 u8 mac[6]; 846 struct net_device *ndev; 847 struct mlx4_ib_gid_entry *ge; 848 u64 reg_id = 0; 849 850 if (mdev->dev->caps.steering_mode == 851 MLX4_STEERING_MODE_DEVICE_MANAGED) { 852 struct mlx4_ib_steering *ib_steering; 853 854 mutex_lock(&mqp->mutex); 855 list_for_each_entry(ib_steering, &mqp->steering_rules, list) { 856 if (!memcmp(ib_steering->gid.raw, gid->raw, 16)) { 857 list_del(&ib_steering->list); 858 break; 859 } 860 } 861 mutex_unlock(&mqp->mutex); 862 if (&ib_steering->list == &mqp->steering_rules) { 863 pr_err("Couldn't find reg_id for mgid. Steering rule is left attached\n"); 864 return -EINVAL; 865 } 866 reg_id = ib_steering->reg_id; 867 kfree(ib_steering); 868 } 869 870 err = mlx4_multicast_detach(mdev->dev, &mqp->mqp, gid->raw, 871 MLX4_PROT_IB_IPV6, reg_id); 872 if (err) 873 return err; 874 875 mutex_lock(&mqp->mutex); 876 ge = find_gid_entry(mqp, gid->raw); 877 if (ge) { 878 spin_lock(&mdev->iboe.lock); 879 ndev = ge->added ? mdev->iboe.netdevs[ge->port - 1] : NULL; 880 if (ndev) 881 dev_hold(ndev); 882 spin_unlock(&mdev->iboe.lock); 883 rdma_get_mcast_mac((struct in6_addr *)gid, mac); 884 if (ndev) { 885 rtnl_lock(); 886 dev_mc_del(mdev->iboe.netdevs[ge->port - 1], mac); 887 rtnl_unlock(); 888 dev_put(ndev); 889 } 890 list_del(&ge->list); 891 kfree(ge); 892 } else 893 pr_warn("could not find mgid entry\n"); 894 895 mutex_unlock(&mqp->mutex); 896 897 return 0; 898 } 899 900 static int init_node_data(struct mlx4_ib_dev *dev) 901 { 902 struct ib_smp *in_mad = NULL; 903 struct ib_smp *out_mad = NULL; 904 int mad_ifc_flags = MLX4_MAD_IFC_IGNORE_KEYS; 905 int err = -ENOMEM; 906 907 in_mad = kzalloc(sizeof *in_mad, GFP_KERNEL); 908 out_mad = kmalloc(sizeof *out_mad, GFP_KERNEL); 909 if (!in_mad || !out_mad) 910 goto out; 911 912 init_query_mad(in_mad); 913 in_mad->attr_id = IB_SMP_ATTR_NODE_DESC; 914 if (mlx4_is_master(dev->dev)) 915 mad_ifc_flags |= MLX4_MAD_IFC_NET_VIEW; 916 917 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 918 if (err) 919 goto out; 920 921 memcpy(dev->ib_dev.node_desc, out_mad->data, 64); 922 923 in_mad->attr_id = IB_SMP_ATTR_NODE_INFO; 924 925 err = mlx4_MAD_IFC(dev, mad_ifc_flags, 1, NULL, NULL, in_mad, out_mad); 926 if (err) 927 goto out; 928 929 dev->dev->rev_id = be32_to_cpup((__be32 *) (out_mad->data + 32)); 930 memcpy(&dev->ib_dev.node_guid, out_mad->data + 12, 8); 931 932 out: 933 kfree(in_mad); 934 kfree(out_mad); 935 return err; 936 } 937 938 static ssize_t show_hca(struct device *device, struct device_attribute *attr, 939 char *buf) 940 { 941 struct mlx4_ib_dev *dev = 942 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 943 return sprintf(buf, "MT%d\n", dev->dev->pdev->device); 944 } 945 946 static ssize_t show_fw_ver(struct device *device, struct device_attribute *attr, 947 char *buf) 948 { 949 struct mlx4_ib_dev *dev = 950 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 951 return sprintf(buf, "%d.%d.%d\n", (int) (dev->dev->caps.fw_ver >> 32), 952 (int) (dev->dev->caps.fw_ver >> 16) & 0xffff, 953 (int) dev->dev->caps.fw_ver & 0xffff); 954 } 955 956 static ssize_t show_rev(struct device *device, struct device_attribute *attr, 957 char *buf) 958 { 959 struct mlx4_ib_dev *dev = 960 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 961 return sprintf(buf, "%x\n", dev->dev->rev_id); 962 } 963 964 static ssize_t show_board(struct device *device, struct device_attribute *attr, 965 char *buf) 966 { 967 struct mlx4_ib_dev *dev = 968 container_of(device, struct mlx4_ib_dev, ib_dev.dev); 969 return sprintf(buf, "%.*s\n", MLX4_BOARD_ID_LEN, 970 dev->dev->board_id); 971 } 972 973 static DEVICE_ATTR(hw_rev, S_IRUGO, show_rev, NULL); 974 static DEVICE_ATTR(fw_ver, S_IRUGO, show_fw_ver, NULL); 975 static DEVICE_ATTR(hca_type, S_IRUGO, show_hca, NULL); 976 static DEVICE_ATTR(board_id, S_IRUGO, show_board, NULL); 977 978 static struct device_attribute *mlx4_class_attributes[] = { 979 &dev_attr_hw_rev, 980 &dev_attr_fw_ver, 981 &dev_attr_hca_type, 982 &dev_attr_board_id 983 }; 984 985 static void mlx4_addrconf_ifid_eui48(u8 *eui, u16 vlan_id, struct net_device *dev) 986 { 987 memcpy(eui, dev->dev_addr, 3); 988 memcpy(eui + 5, dev->dev_addr + 3, 3); 989 if (vlan_id < 0x1000) { 990 eui[3] = vlan_id >> 8; 991 eui[4] = vlan_id & 0xff; 992 } else { 993 eui[3] = 0xff; 994 eui[4] = 0xfe; 995 } 996 eui[0] ^= 2; 997 } 998 999 static void update_gids_task(struct work_struct *work) 1000 { 1001 struct update_gid_work *gw = container_of(work, struct update_gid_work, work); 1002 struct mlx4_cmd_mailbox *mailbox; 1003 union ib_gid *gids; 1004 int err; 1005 struct mlx4_dev *dev = gw->dev->dev; 1006 1007 mailbox = mlx4_alloc_cmd_mailbox(dev); 1008 if (IS_ERR(mailbox)) { 1009 pr_warn("update gid table failed %ld\n", PTR_ERR(mailbox)); 1010 return; 1011 } 1012 1013 gids = mailbox->buf; 1014 memcpy(gids, gw->gids, sizeof gw->gids); 1015 1016 err = mlx4_cmd(dev, mailbox->dma, MLX4_SET_PORT_GID_TABLE << 8 | gw->port, 1017 1, MLX4_CMD_SET_PORT, MLX4_CMD_TIME_CLASS_B, 1018 MLX4_CMD_WRAPPED); 1019 if (err) 1020 pr_warn("set port command failed\n"); 1021 else { 1022 memcpy(gw->dev->iboe.gid_table[gw->port - 1], gw->gids, sizeof gw->gids); 1023 mlx4_ib_dispatch_event(gw->dev, gw->port, IB_EVENT_GID_CHANGE); 1024 } 1025 1026 mlx4_free_cmd_mailbox(dev, mailbox); 1027 kfree(gw); 1028 } 1029 1030 static int update_ipv6_gids(struct mlx4_ib_dev *dev, int port, int clear) 1031 { 1032 struct net_device *ndev = dev->iboe.netdevs[port - 1]; 1033 struct update_gid_work *work; 1034 struct net_device *tmp; 1035 int i; 1036 u8 *hits; 1037 int ret; 1038 union ib_gid gid; 1039 int free; 1040 int found; 1041 int need_update = 0; 1042 u16 vid; 1043 1044 work = kzalloc(sizeof *work, GFP_ATOMIC); 1045 if (!work) 1046 return -ENOMEM; 1047 1048 hits = kzalloc(128, GFP_ATOMIC); 1049 if (!hits) { 1050 ret = -ENOMEM; 1051 goto out; 1052 } 1053 1054 rcu_read_lock(); 1055 for_each_netdev_rcu(&init_net, tmp) { 1056 if (ndev && (tmp == ndev || rdma_vlan_dev_real_dev(tmp) == ndev)) { 1057 gid.global.subnet_prefix = cpu_to_be64(0xfe80000000000000LL); 1058 vid = rdma_vlan_dev_vlan_id(tmp); 1059 mlx4_addrconf_ifid_eui48(&gid.raw[8], vid, ndev); 1060 found = 0; 1061 free = -1; 1062 for (i = 0; i < 128; ++i) { 1063 if (free < 0 && 1064 !memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) 1065 free = i; 1066 if (!memcmp(&dev->iboe.gid_table[port - 1][i], &gid, sizeof gid)) { 1067 hits[i] = 1; 1068 found = 1; 1069 break; 1070 } 1071 } 1072 1073 if (!found) { 1074 if (tmp == ndev && 1075 (memcmp(&dev->iboe.gid_table[port - 1][0], 1076 &gid, sizeof gid) || 1077 !memcmp(&dev->iboe.gid_table[port - 1][0], 1078 &zgid, sizeof gid))) { 1079 dev->iboe.gid_table[port - 1][0] = gid; 1080 ++need_update; 1081 hits[0] = 1; 1082 } else if (free >= 0) { 1083 dev->iboe.gid_table[port - 1][free] = gid; 1084 hits[free] = 1; 1085 ++need_update; 1086 } 1087 } 1088 } 1089 } 1090 rcu_read_unlock(); 1091 1092 for (i = 0; i < 128; ++i) 1093 if (!hits[i]) { 1094 if (memcmp(&dev->iboe.gid_table[port - 1][i], &zgid, sizeof zgid)) 1095 ++need_update; 1096 dev->iboe.gid_table[port - 1][i] = zgid; 1097 } 1098 1099 if (need_update) { 1100 memcpy(work->gids, dev->iboe.gid_table[port - 1], sizeof work->gids); 1101 INIT_WORK(&work->work, update_gids_task); 1102 work->port = port; 1103 work->dev = dev; 1104 queue_work(wq, &work->work); 1105 } else 1106 kfree(work); 1107 1108 kfree(hits); 1109 return 0; 1110 1111 out: 1112 kfree(work); 1113 return ret; 1114 } 1115 1116 static void handle_en_event(struct mlx4_ib_dev *dev, int port, unsigned long event) 1117 { 1118 switch (event) { 1119 case NETDEV_UP: 1120 case NETDEV_CHANGEADDR: 1121 update_ipv6_gids(dev, port, 0); 1122 break; 1123 1124 case NETDEV_DOWN: 1125 update_ipv6_gids(dev, port, 1); 1126 dev->iboe.netdevs[port - 1] = NULL; 1127 } 1128 } 1129 1130 static void netdev_added(struct mlx4_ib_dev *dev, int port) 1131 { 1132 update_ipv6_gids(dev, port, 0); 1133 } 1134 1135 static void netdev_removed(struct mlx4_ib_dev *dev, int port) 1136 { 1137 update_ipv6_gids(dev, port, 1); 1138 } 1139 1140 static int mlx4_ib_netdev_event(struct notifier_block *this, unsigned long event, 1141 void *ptr) 1142 { 1143 struct net_device *dev = ptr; 1144 struct mlx4_ib_dev *ibdev; 1145 struct net_device *oldnd; 1146 struct mlx4_ib_iboe *iboe; 1147 int port; 1148 1149 if (!net_eq(dev_net(dev), &init_net)) 1150 return NOTIFY_DONE; 1151 1152 ibdev = container_of(this, struct mlx4_ib_dev, iboe.nb); 1153 iboe = &ibdev->iboe; 1154 1155 spin_lock(&iboe->lock); 1156 mlx4_foreach_ib_transport_port(port, ibdev->dev) { 1157 oldnd = iboe->netdevs[port - 1]; 1158 iboe->netdevs[port - 1] = 1159 mlx4_get_protocol_dev(ibdev->dev, MLX4_PROT_ETH, port); 1160 if (oldnd != iboe->netdevs[port - 1]) { 1161 if (iboe->netdevs[port - 1]) 1162 netdev_added(ibdev, port); 1163 else 1164 netdev_removed(ibdev, port); 1165 } 1166 } 1167 1168 if (dev == iboe->netdevs[0] || 1169 (iboe->netdevs[0] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[0])) 1170 handle_en_event(ibdev, 1, event); 1171 else if (dev == iboe->netdevs[1] 1172 || (iboe->netdevs[1] && rdma_vlan_dev_real_dev(dev) == iboe->netdevs[1])) 1173 handle_en_event(ibdev, 2, event); 1174 1175 spin_unlock(&iboe->lock); 1176 1177 return NOTIFY_DONE; 1178 } 1179 1180 static void init_pkeys(struct mlx4_ib_dev *ibdev) 1181 { 1182 int port; 1183 int slave; 1184 int i; 1185 1186 if (mlx4_is_master(ibdev->dev)) { 1187 for (slave = 0; slave <= ibdev->dev->num_vfs; ++slave) { 1188 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 1189 for (i = 0; 1190 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 1191 ++i) { 1192 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i] = 1193 /* master has the identity virt2phys pkey mapping */ 1194 (slave == mlx4_master_func_num(ibdev->dev) || !i) ? i : 1195 ibdev->dev->phys_caps.pkey_phys_table_len[port] - 1; 1196 mlx4_sync_pkey_table(ibdev->dev, slave, port, i, 1197 ibdev->pkeys.virt2phys_pkey[slave][port - 1][i]); 1198 } 1199 } 1200 } 1201 /* initialize pkey cache */ 1202 for (port = 1; port <= ibdev->dev->caps.num_ports; ++port) { 1203 for (i = 0; 1204 i < ibdev->dev->phys_caps.pkey_phys_table_len[port]; 1205 ++i) 1206 ibdev->pkeys.phys_pkey_cache[port-1][i] = 1207 (i) ? 0 : 0xFFFF; 1208 } 1209 } 1210 } 1211 1212 static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 1213 { 1214 char name[32]; 1215 int eq_per_port = 0; 1216 int added_eqs = 0; 1217 int total_eqs = 0; 1218 int i, j, eq; 1219 1220 /* Legacy mode or comp_pool is not large enough */ 1221 if (dev->caps.comp_pool == 0 || 1222 dev->caps.num_ports > dev->caps.comp_pool) 1223 return; 1224 1225 eq_per_port = rounddown_pow_of_two(dev->caps.comp_pool/ 1226 dev->caps.num_ports); 1227 1228 /* Init eq table */ 1229 added_eqs = 0; 1230 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) 1231 added_eqs += eq_per_port; 1232 1233 total_eqs = dev->caps.num_comp_vectors + added_eqs; 1234 1235 ibdev->eq_table = kzalloc(total_eqs * sizeof(int), GFP_KERNEL); 1236 if (!ibdev->eq_table) 1237 return; 1238 1239 ibdev->eq_added = added_eqs; 1240 1241 eq = 0; 1242 mlx4_foreach_port(i, dev, MLX4_PORT_TYPE_IB) { 1243 for (j = 0; j < eq_per_port; j++) { 1244 sprintf(name, "mlx4-ib-%d-%d@%s", 1245 i, j, dev->pdev->bus->name); 1246 /* Set IRQ for specific name (per ring) */ 1247 if (mlx4_assign_eq(dev, name, NULL, 1248 &ibdev->eq_table[eq])) { 1249 /* Use legacy (same as mlx4_en driver) */ 1250 pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq); 1251 ibdev->eq_table[eq] = 1252 (eq % dev->caps.num_comp_vectors); 1253 } 1254 eq++; 1255 } 1256 } 1257 1258 /* Fill the reset of the vector with legacy EQ */ 1259 for (i = 0, eq = added_eqs; i < dev->caps.num_comp_vectors; i++) 1260 ibdev->eq_table[eq++] = i; 1261 1262 /* Advertise the new number of EQs to clients */ 1263 ibdev->ib_dev.num_comp_vectors = total_eqs; 1264 } 1265 1266 static void mlx4_ib_free_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev) 1267 { 1268 int i; 1269 1270 /* no additional eqs were added */ 1271 if (!ibdev->eq_table) 1272 return; 1273 1274 /* Reset the advertised EQ number */ 1275 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 1276 1277 /* Free only the added eqs */ 1278 for (i = 0; i < ibdev->eq_added; i++) { 1279 /* Don't free legacy eqs if used */ 1280 if (ibdev->eq_table[i] <= dev->caps.num_comp_vectors) 1281 continue; 1282 mlx4_release_eq(dev, ibdev->eq_table[i]); 1283 } 1284 1285 kfree(ibdev->eq_table); 1286 } 1287 1288 static void *mlx4_ib_add(struct mlx4_dev *dev) 1289 { 1290 struct mlx4_ib_dev *ibdev; 1291 int num_ports = 0; 1292 int i, j; 1293 int err; 1294 struct mlx4_ib_iboe *iboe; 1295 1296 pr_info_once("%s", mlx4_ib_version); 1297 1298 mlx4_foreach_non_ib_transport_port(i, dev) 1299 num_ports++; 1300 1301 if (mlx4_is_mfunc(dev) && num_ports) { 1302 dev_err(&dev->pdev->dev, "RoCE is not supported over SRIOV as yet\n"); 1303 return NULL; 1304 } 1305 1306 num_ports = 0; 1307 mlx4_foreach_ib_transport_port(i, dev) 1308 num_ports++; 1309 1310 /* No point in registering a device with no ports... */ 1311 if (num_ports == 0) 1312 return NULL; 1313 1314 ibdev = (struct mlx4_ib_dev *) ib_alloc_device(sizeof *ibdev); 1315 if (!ibdev) { 1316 dev_err(&dev->pdev->dev, "Device struct alloc failed\n"); 1317 return NULL; 1318 } 1319 1320 iboe = &ibdev->iboe; 1321 1322 if (mlx4_pd_alloc(dev, &ibdev->priv_pdn)) 1323 goto err_dealloc; 1324 1325 if (mlx4_uar_alloc(dev, &ibdev->priv_uar)) 1326 goto err_pd; 1327 1328 ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT, 1329 PAGE_SIZE); 1330 if (!ibdev->uar_map) 1331 goto err_uar; 1332 MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock); 1333 1334 ibdev->dev = dev; 1335 1336 strlcpy(ibdev->ib_dev.name, "mlx4_%d", IB_DEVICE_NAME_MAX); 1337 ibdev->ib_dev.owner = THIS_MODULE; 1338 ibdev->ib_dev.node_type = RDMA_NODE_IB_CA; 1339 ibdev->ib_dev.local_dma_lkey = dev->caps.reserved_lkey; 1340 ibdev->num_ports = num_ports; 1341 ibdev->ib_dev.phys_port_cnt = ibdev->num_ports; 1342 ibdev->ib_dev.num_comp_vectors = dev->caps.num_comp_vectors; 1343 ibdev->ib_dev.dma_device = &dev->pdev->dev; 1344 1345 ibdev->ib_dev.uverbs_abi_ver = MLX4_IB_UVERBS_ABI_VERSION; 1346 ibdev->ib_dev.uverbs_cmd_mask = 1347 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 1348 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 1349 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 1350 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 1351 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 1352 (1ull << IB_USER_VERBS_CMD_REG_MR) | 1353 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 1354 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 1355 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 1356 (1ull << IB_USER_VERBS_CMD_RESIZE_CQ) | 1357 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 1358 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 1359 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 1360 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 1361 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 1362 (1ull << IB_USER_VERBS_CMD_ATTACH_MCAST) | 1363 (1ull << IB_USER_VERBS_CMD_DETACH_MCAST) | 1364 (1ull << IB_USER_VERBS_CMD_CREATE_SRQ) | 1365 (1ull << IB_USER_VERBS_CMD_MODIFY_SRQ) | 1366 (1ull << IB_USER_VERBS_CMD_QUERY_SRQ) | 1367 (1ull << IB_USER_VERBS_CMD_DESTROY_SRQ) | 1368 (1ull << IB_USER_VERBS_CMD_CREATE_XSRQ) | 1369 (1ull << IB_USER_VERBS_CMD_OPEN_QP); 1370 1371 ibdev->ib_dev.query_device = mlx4_ib_query_device; 1372 ibdev->ib_dev.query_port = mlx4_ib_query_port; 1373 ibdev->ib_dev.get_link_layer = mlx4_ib_port_link_layer; 1374 ibdev->ib_dev.query_gid = mlx4_ib_query_gid; 1375 ibdev->ib_dev.query_pkey = mlx4_ib_query_pkey; 1376 ibdev->ib_dev.modify_device = mlx4_ib_modify_device; 1377 ibdev->ib_dev.modify_port = mlx4_ib_modify_port; 1378 ibdev->ib_dev.alloc_ucontext = mlx4_ib_alloc_ucontext; 1379 ibdev->ib_dev.dealloc_ucontext = mlx4_ib_dealloc_ucontext; 1380 ibdev->ib_dev.mmap = mlx4_ib_mmap; 1381 ibdev->ib_dev.alloc_pd = mlx4_ib_alloc_pd; 1382 ibdev->ib_dev.dealloc_pd = mlx4_ib_dealloc_pd; 1383 ibdev->ib_dev.create_ah = mlx4_ib_create_ah; 1384 ibdev->ib_dev.query_ah = mlx4_ib_query_ah; 1385 ibdev->ib_dev.destroy_ah = mlx4_ib_destroy_ah; 1386 ibdev->ib_dev.create_srq = mlx4_ib_create_srq; 1387 ibdev->ib_dev.modify_srq = mlx4_ib_modify_srq; 1388 ibdev->ib_dev.query_srq = mlx4_ib_query_srq; 1389 ibdev->ib_dev.destroy_srq = mlx4_ib_destroy_srq; 1390 ibdev->ib_dev.post_srq_recv = mlx4_ib_post_srq_recv; 1391 ibdev->ib_dev.create_qp = mlx4_ib_create_qp; 1392 ibdev->ib_dev.modify_qp = mlx4_ib_modify_qp; 1393 ibdev->ib_dev.query_qp = mlx4_ib_query_qp; 1394 ibdev->ib_dev.destroy_qp = mlx4_ib_destroy_qp; 1395 ibdev->ib_dev.post_send = mlx4_ib_post_send; 1396 ibdev->ib_dev.post_recv = mlx4_ib_post_recv; 1397 ibdev->ib_dev.create_cq = mlx4_ib_create_cq; 1398 ibdev->ib_dev.modify_cq = mlx4_ib_modify_cq; 1399 ibdev->ib_dev.resize_cq = mlx4_ib_resize_cq; 1400 ibdev->ib_dev.destroy_cq = mlx4_ib_destroy_cq; 1401 ibdev->ib_dev.poll_cq = mlx4_ib_poll_cq; 1402 ibdev->ib_dev.req_notify_cq = mlx4_ib_arm_cq; 1403 ibdev->ib_dev.get_dma_mr = mlx4_ib_get_dma_mr; 1404 ibdev->ib_dev.reg_user_mr = mlx4_ib_reg_user_mr; 1405 ibdev->ib_dev.dereg_mr = mlx4_ib_dereg_mr; 1406 ibdev->ib_dev.alloc_fast_reg_mr = mlx4_ib_alloc_fast_reg_mr; 1407 ibdev->ib_dev.alloc_fast_reg_page_list = mlx4_ib_alloc_fast_reg_page_list; 1408 ibdev->ib_dev.free_fast_reg_page_list = mlx4_ib_free_fast_reg_page_list; 1409 ibdev->ib_dev.attach_mcast = mlx4_ib_mcg_attach; 1410 ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach; 1411 ibdev->ib_dev.process_mad = mlx4_ib_process_mad; 1412 1413 if (!mlx4_is_slave(ibdev->dev)) { 1414 ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc; 1415 ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr; 1416 ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; 1417 ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; 1418 } 1419 1420 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { 1421 ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; 1422 ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; 1423 ibdev->ib_dev.uverbs_cmd_mask |= 1424 (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | 1425 (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); 1426 } 1427 1428 mlx4_ib_alloc_eqs(dev, ibdev); 1429 1430 spin_lock_init(&iboe->lock); 1431 1432 if (init_node_data(ibdev)) 1433 goto err_map; 1434 1435 for (i = 0; i < ibdev->num_ports; ++i) { 1436 if (mlx4_ib_port_link_layer(&ibdev->ib_dev, i + 1) == 1437 IB_LINK_LAYER_ETHERNET) { 1438 err = mlx4_counter_alloc(ibdev->dev, &ibdev->counters[i]); 1439 if (err) 1440 ibdev->counters[i] = -1; 1441 } else 1442 ibdev->counters[i] = -1; 1443 } 1444 1445 spin_lock_init(&ibdev->sm_lock); 1446 mutex_init(&ibdev->cap_mask_mutex); 1447 1448 if (ib_register_device(&ibdev->ib_dev, NULL)) 1449 goto err_counter; 1450 1451 if (mlx4_ib_mad_init(ibdev)) 1452 goto err_reg; 1453 1454 if (mlx4_ib_init_sriov(ibdev)) 1455 goto err_mad; 1456 1457 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE && !iboe->nb.notifier_call) { 1458 iboe->nb.notifier_call = mlx4_ib_netdev_event; 1459 err = register_netdevice_notifier(&iboe->nb); 1460 if (err) 1461 goto err_sriov; 1462 } 1463 1464 for (j = 0; j < ARRAY_SIZE(mlx4_class_attributes); ++j) { 1465 if (device_create_file(&ibdev->ib_dev.dev, 1466 mlx4_class_attributes[j])) 1467 goto err_notif; 1468 } 1469 1470 ibdev->ib_active = true; 1471 1472 if (mlx4_is_mfunc(ibdev->dev)) 1473 init_pkeys(ibdev); 1474 1475 /* create paravirt contexts for any VFs which are active */ 1476 if (mlx4_is_master(ibdev->dev)) { 1477 for (j = 0; j < MLX4_MFUNC_MAX; j++) { 1478 if (j == mlx4_master_func_num(ibdev->dev)) 1479 continue; 1480 if (mlx4_is_slave_active(ibdev->dev, j)) 1481 do_slave_init(ibdev, j, 1); 1482 } 1483 } 1484 return ibdev; 1485 1486 err_notif: 1487 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 1488 pr_warn("failure unregistering notifier\n"); 1489 flush_workqueue(wq); 1490 1491 err_sriov: 1492 mlx4_ib_close_sriov(ibdev); 1493 1494 err_mad: 1495 mlx4_ib_mad_cleanup(ibdev); 1496 1497 err_reg: 1498 ib_unregister_device(&ibdev->ib_dev); 1499 1500 err_counter: 1501 for (; i; --i) 1502 if (ibdev->counters[i - 1] != -1) 1503 mlx4_counter_free(ibdev->dev, ibdev->counters[i - 1]); 1504 1505 err_map: 1506 iounmap(ibdev->uar_map); 1507 1508 err_uar: 1509 mlx4_uar_free(dev, &ibdev->priv_uar); 1510 1511 err_pd: 1512 mlx4_pd_free(dev, ibdev->priv_pdn); 1513 1514 err_dealloc: 1515 ib_dealloc_device(&ibdev->ib_dev); 1516 1517 return NULL; 1518 } 1519 1520 static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr) 1521 { 1522 struct mlx4_ib_dev *ibdev = ibdev_ptr; 1523 int p; 1524 1525 mlx4_ib_close_sriov(ibdev); 1526 mlx4_ib_mad_cleanup(ibdev); 1527 ib_unregister_device(&ibdev->ib_dev); 1528 if (ibdev->iboe.nb.notifier_call) { 1529 if (unregister_netdevice_notifier(&ibdev->iboe.nb)) 1530 pr_warn("failure unregistering notifier\n"); 1531 ibdev->iboe.nb.notifier_call = NULL; 1532 } 1533 iounmap(ibdev->uar_map); 1534 for (p = 0; p < ibdev->num_ports; ++p) 1535 if (ibdev->counters[p] != -1) 1536 mlx4_counter_free(ibdev->dev, ibdev->counters[p]); 1537 mlx4_foreach_port(p, dev, MLX4_PORT_TYPE_IB) 1538 mlx4_CLOSE_PORT(dev, p); 1539 1540 mlx4_ib_free_eqs(dev, ibdev); 1541 1542 mlx4_uar_free(dev, &ibdev->priv_uar); 1543 mlx4_pd_free(dev, ibdev->priv_pdn); 1544 ib_dealloc_device(&ibdev->ib_dev); 1545 } 1546 1547 static void do_slave_init(struct mlx4_ib_dev *ibdev, int slave, int do_init) 1548 { 1549 struct mlx4_ib_demux_work **dm = NULL; 1550 struct mlx4_dev *dev = ibdev->dev; 1551 int i; 1552 unsigned long flags; 1553 1554 if (!mlx4_is_master(dev)) 1555 return; 1556 1557 dm = kcalloc(dev->caps.num_ports, sizeof *dm, GFP_ATOMIC); 1558 if (!dm) { 1559 pr_err("failed to allocate memory for tunneling qp update\n"); 1560 goto out; 1561 } 1562 1563 for (i = 0; i < dev->caps.num_ports; i++) { 1564 dm[i] = kmalloc(sizeof (struct mlx4_ib_demux_work), GFP_ATOMIC); 1565 if (!dm[i]) { 1566 pr_err("failed to allocate memory for tunneling qp update work struct\n"); 1567 for (i = 0; i < dev->caps.num_ports; i++) { 1568 if (dm[i]) 1569 kfree(dm[i]); 1570 } 1571 goto out; 1572 } 1573 } 1574 /* initialize or tear down tunnel QPs for the slave */ 1575 for (i = 0; i < dev->caps.num_ports; i++) { 1576 INIT_WORK(&dm[i]->work, mlx4_ib_tunnels_update_work); 1577 dm[i]->port = i + 1; 1578 dm[i]->slave = slave; 1579 dm[i]->do_init = do_init; 1580 dm[i]->dev = ibdev; 1581 spin_lock_irqsave(&ibdev->sriov.going_down_lock, flags); 1582 if (!ibdev->sriov.is_going_down) 1583 queue_work(ibdev->sriov.demux[i].ud_wq, &dm[i]->work); 1584 spin_unlock_irqrestore(&ibdev->sriov.going_down_lock, flags); 1585 } 1586 out: 1587 if (dm) 1588 kfree(dm); 1589 return; 1590 } 1591 1592 static void mlx4_ib_event(struct mlx4_dev *dev, void *ibdev_ptr, 1593 enum mlx4_dev_event event, unsigned long param) 1594 { 1595 struct ib_event ibev; 1596 struct mlx4_ib_dev *ibdev = to_mdev((struct ib_device *) ibdev_ptr); 1597 struct mlx4_eqe *eqe = NULL; 1598 struct ib_event_work *ew; 1599 int p = 0; 1600 1601 if (event == MLX4_DEV_EVENT_PORT_MGMT_CHANGE) 1602 eqe = (struct mlx4_eqe *)param; 1603 else 1604 p = (int) param; 1605 1606 switch (event) { 1607 case MLX4_DEV_EVENT_PORT_UP: 1608 if (p > ibdev->num_ports) 1609 return; 1610 if (mlx4_is_master(dev) && 1611 rdma_port_get_link_layer(&ibdev->ib_dev, p) == 1612 IB_LINK_LAYER_INFINIBAND) { 1613 mlx4_ib_invalidate_all_guid_record(ibdev, p); 1614 } 1615 ibev.event = IB_EVENT_PORT_ACTIVE; 1616 break; 1617 1618 case MLX4_DEV_EVENT_PORT_DOWN: 1619 if (p > ibdev->num_ports) 1620 return; 1621 ibev.event = IB_EVENT_PORT_ERR; 1622 break; 1623 1624 case MLX4_DEV_EVENT_CATASTROPHIC_ERROR: 1625 ibdev->ib_active = false; 1626 ibev.event = IB_EVENT_DEVICE_FATAL; 1627 break; 1628 1629 case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: 1630 ew = kmalloc(sizeof *ew, GFP_ATOMIC); 1631 if (!ew) { 1632 pr_err("failed to allocate memory for events work\n"); 1633 break; 1634 } 1635 1636 INIT_WORK(&ew->work, handle_port_mgmt_change_event); 1637 memcpy(&ew->ib_eqe, eqe, sizeof *eqe); 1638 ew->ib_dev = ibdev; 1639 /* need to queue only for port owner, which uses GEN_EQE */ 1640 if (mlx4_is_master(dev)) 1641 queue_work(wq, &ew->work); 1642 else 1643 handle_port_mgmt_change_event(&ew->work); 1644 return; 1645 1646 case MLX4_DEV_EVENT_SLAVE_INIT: 1647 /* here, p is the slave id */ 1648 do_slave_init(ibdev, p, 1); 1649 return; 1650 1651 case MLX4_DEV_EVENT_SLAVE_SHUTDOWN: 1652 /* here, p is the slave id */ 1653 do_slave_init(ibdev, p, 0); 1654 return; 1655 1656 default: 1657 return; 1658 } 1659 1660 ibev.device = ibdev_ptr; 1661 ibev.element.port_num = (u8) p; 1662 1663 ib_dispatch_event(&ibev); 1664 } 1665 1666 static struct mlx4_interface mlx4_ib_interface = { 1667 .add = mlx4_ib_add, 1668 .remove = mlx4_ib_remove, 1669 .event = mlx4_ib_event, 1670 .protocol = MLX4_PROT_IB_IPV6 1671 }; 1672 1673 static int __init mlx4_ib_init(void) 1674 { 1675 int err; 1676 1677 wq = create_singlethread_workqueue("mlx4_ib"); 1678 if (!wq) 1679 return -ENOMEM; 1680 1681 err = mlx4_ib_mcg_init(); 1682 if (err) 1683 goto clean_wq; 1684 1685 err = mlx4_register_interface(&mlx4_ib_interface); 1686 if (err) 1687 goto clean_mcg; 1688 1689 return 0; 1690 1691 clean_mcg: 1692 mlx4_ib_mcg_destroy(); 1693 1694 clean_wq: 1695 destroy_workqueue(wq); 1696 return err; 1697 } 1698 1699 static void __exit mlx4_ib_cleanup(void) 1700 { 1701 mlx4_unregister_interface(&mlx4_ib_interface); 1702 mlx4_ib_mcg_destroy(); 1703 destroy_workqueue(wq); 1704 } 1705 1706 module_init(mlx4_ib_init); 1707 module_exit(mlx4_ib_cleanup); 1708