1 /* 2 * Copyright (c) 2004, 2005 Topspin Communications. All rights reserved. 3 * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved. 4 * Copyright (c) 2005, 2006, 2007, 2008 Mellanox Technologies. All rights reserved. 5 * Copyright (c) 2006, 2007 Cisco Systems, Inc. All rights reserved. 6 * 7 * This software is available to you under a choice of one of two 8 * licenses. You may choose to be licensed under the terms of the GNU 9 * General Public License (GPL) Version 2, available from the file 10 * COPYING in the main directory of this source tree, or the 11 * OpenIB.org BSD license below: 12 * 13 * Redistribution and use in source and binary forms, with or 14 * without modification, are permitted provided that the following 15 * conditions are met: 16 * 17 * - Redistributions of source code must retain the above 18 * copyright notice, this list of conditions and the following 19 * disclaimer. 20 * 21 * - Redistributions in binary form must reproduce the above 22 * copyright notice, this list of conditions and the following 23 * disclaimer in the documentation and/or other materials 24 * provided with the distribution. 25 * 26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 30 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 31 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 32 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 33 * SOFTWARE. 34 */ 35 36 #include <linux/module.h> 37 #include <linux/kernel.h> 38 #include <linux/init.h> 39 #include <linux/errno.h> 40 #include <linux/pci.h> 41 #include <linux/dma-mapping.h> 42 #include <linux/slab.h> 43 #include <linux/io-mapping.h> 44 #include <linux/delay.h> 45 #include <linux/etherdevice.h> 46 #include <net/devlink.h> 47 48 #include <uapi/rdma/mlx4-abi.h> 49 #include <linux/mlx4/device.h> 50 #include <linux/mlx4/doorbell.h> 51 52 #include "mlx4.h" 53 #include "fw.h" 54 #include "icm.h" 55 56 MODULE_AUTHOR("Roland Dreier"); 57 MODULE_DESCRIPTION("Mellanox ConnectX HCA low-level driver"); 58 MODULE_LICENSE("Dual BSD/GPL"); 59 MODULE_VERSION(DRV_VERSION); 60 61 struct workqueue_struct *mlx4_wq; 62 63 #ifdef CONFIG_MLX4_DEBUG 64 65 int mlx4_debug_level; /* 0 by default */ 66 module_param_named(debug_level, mlx4_debug_level, int, 0644); 67 MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0"); 68 69 #endif /* CONFIG_MLX4_DEBUG */ 70 71 #ifdef CONFIG_PCI_MSI 72 73 static int msi_x = 1; 74 module_param(msi_x, int, 0444); 75 MODULE_PARM_DESC(msi_x, "0 - don't use MSI-X, 1 - use MSI-X, >1 - limit number of MSI-X irqs to msi_x"); 76 77 #else /* CONFIG_PCI_MSI */ 78 79 #define msi_x (0) 80 81 #endif /* CONFIG_PCI_MSI */ 82 83 static uint8_t num_vfs[3] = {0, 0, 0}; 84 static int num_vfs_argc; 85 module_param_array(num_vfs, byte, &num_vfs_argc, 0444); 86 MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0\n" 87 "num_vfs=port1,port2,port1+2"); 88 89 static uint8_t probe_vf[3] = {0, 0, 0}; 90 static int probe_vfs_argc; 91 module_param_array(probe_vf, byte, &probe_vfs_argc, 0444); 92 MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)\n" 93 "probe_vf=port1,port2,port1+2"); 94 95 static int mlx4_log_num_mgm_entry_size = MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE; 96 module_param_named(log_num_mgm_entry_size, 97 mlx4_log_num_mgm_entry_size, int, 0444); 98 MODULE_PARM_DESC(log_num_mgm_entry_size, "log mgm size, that defines the num" 99 " of qp per mcg, for example:" 100 " 10 gives 248.range: 7 <=" 101 " log_num_mgm_entry_size <= 12." 102 " To activate device managed" 103 " flow steering when available, set to -1"); 104 105 static bool enable_64b_cqe_eqe = true; 106 module_param(enable_64b_cqe_eqe, bool, 0444); 107 MODULE_PARM_DESC(enable_64b_cqe_eqe, 108 "Enable 64 byte CQEs/EQEs when the FW supports this (default: True)"); 109 110 static bool enable_4k_uar; 111 module_param(enable_4k_uar, bool, 0444); 112 MODULE_PARM_DESC(enable_4k_uar, 113 "Enable using 4K UAR. Should not be enabled if have VFs which do not support 4K UARs (default: false)"); 114 115 #define PF_CONTEXT_BEHAVIOUR_MASK (MLX4_FUNC_CAP_64B_EQE_CQE | \ 116 MLX4_FUNC_CAP_EQE_CQE_STRIDE | \ 117 MLX4_FUNC_CAP_DMFS_A0_STATIC) 118 119 #define RESET_PERSIST_MASK_FLAGS (MLX4_FLAG_SRIOV) 120 121 static char mlx4_version[] = 122 DRV_NAME ": Mellanox ConnectX core driver v" 123 DRV_VERSION "\n"; 124 125 static const struct mlx4_profile default_profile = { 126 .num_qp = 1 << 18, 127 .num_srq = 1 << 16, 128 .rdmarc_per_qp = 1 << 4, 129 .num_cq = 1 << 16, 130 .num_mcg = 1 << 13, 131 .num_mpt = 1 << 19, 132 .num_mtt = 1 << 20, /* It is really num mtt segements */ 133 }; 134 135 static const struct mlx4_profile low_mem_profile = { 136 .num_qp = 1 << 17, 137 .num_srq = 1 << 6, 138 .rdmarc_per_qp = 1 << 4, 139 .num_cq = 1 << 8, 140 .num_mcg = 1 << 8, 141 .num_mpt = 1 << 9, 142 .num_mtt = 1 << 7, 143 }; 144 145 static int log_num_mac = 7; 146 module_param_named(log_num_mac, log_num_mac, int, 0444); 147 MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)"); 148 149 static int log_num_vlan; 150 module_param_named(log_num_vlan, log_num_vlan, int, 0444); 151 MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)"); 152 /* Log2 max number of VLANs per ETH port (0-7) */ 153 #define MLX4_LOG_NUM_VLANS 7 154 #define MLX4_MIN_LOG_NUM_VLANS 0 155 #define MLX4_MIN_LOG_NUM_MAC 1 156 157 static bool use_prio; 158 module_param_named(use_prio, use_prio, bool, 0444); 159 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports (deprecated)"); 160 161 int log_mtts_per_seg = ilog2(1); 162 module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444); 163 MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment " 164 "(0-7) (default: 0)"); 165 166 static int port_type_array[2] = {MLX4_PORT_TYPE_NONE, MLX4_PORT_TYPE_NONE}; 167 static int arr_argc = 2; 168 module_param_array(port_type_array, int, &arr_argc, 0444); 169 MODULE_PARM_DESC(port_type_array, "Array of port types: HW_DEFAULT (0) is default " 170 "1 for IB, 2 for Ethernet"); 171 172 struct mlx4_port_config { 173 struct list_head list; 174 enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1]; 175 struct pci_dev *pdev; 176 }; 177 178 static atomic_t pf_loading = ATOMIC_INIT(0); 179 180 static int mlx4_devlink_ierr_reset_get(struct devlink *devlink, u32 id, 181 struct devlink_param_gset_ctx *ctx) 182 { 183 ctx->val.vbool = !!mlx4_internal_err_reset; 184 return 0; 185 } 186 187 static int mlx4_devlink_ierr_reset_set(struct devlink *devlink, u32 id, 188 struct devlink_param_gset_ctx *ctx) 189 { 190 mlx4_internal_err_reset = ctx->val.vbool; 191 return 0; 192 } 193 194 static int mlx4_devlink_crdump_snapshot_get(struct devlink *devlink, u32 id, 195 struct devlink_param_gset_ctx *ctx) 196 { 197 struct mlx4_priv *priv = devlink_priv(devlink); 198 struct mlx4_dev *dev = &priv->dev; 199 200 ctx->val.vbool = dev->persist->crdump.snapshot_enable; 201 return 0; 202 } 203 204 static int mlx4_devlink_crdump_snapshot_set(struct devlink *devlink, u32 id, 205 struct devlink_param_gset_ctx *ctx) 206 { 207 struct mlx4_priv *priv = devlink_priv(devlink); 208 struct mlx4_dev *dev = &priv->dev; 209 210 dev->persist->crdump.snapshot_enable = ctx->val.vbool; 211 return 0; 212 } 213 214 static int 215 mlx4_devlink_max_macs_validate(struct devlink *devlink, u32 id, 216 union devlink_param_value val, 217 struct netlink_ext_ack *extack) 218 { 219 u32 value = val.vu32; 220 221 if (value < 1 || value > 128) 222 return -ERANGE; 223 224 if (!is_power_of_2(value)) { 225 NL_SET_ERR_MSG_MOD(extack, "max_macs supported must be power of 2"); 226 return -EINVAL; 227 } 228 229 return 0; 230 } 231 232 enum mlx4_devlink_param_id { 233 MLX4_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX, 234 MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE, 235 MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR, 236 }; 237 238 static const struct devlink_param mlx4_devlink_params[] = { 239 DEVLINK_PARAM_GENERIC(INT_ERR_RESET, 240 BIT(DEVLINK_PARAM_CMODE_RUNTIME) | 241 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), 242 mlx4_devlink_ierr_reset_get, 243 mlx4_devlink_ierr_reset_set, NULL), 244 DEVLINK_PARAM_GENERIC(MAX_MACS, 245 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), 246 NULL, NULL, mlx4_devlink_max_macs_validate), 247 DEVLINK_PARAM_GENERIC(REGION_SNAPSHOT, 248 BIT(DEVLINK_PARAM_CMODE_RUNTIME) | 249 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), 250 mlx4_devlink_crdump_snapshot_get, 251 mlx4_devlink_crdump_snapshot_set, NULL), 252 DEVLINK_PARAM_DRIVER(MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE, 253 "enable_64b_cqe_eqe", DEVLINK_PARAM_TYPE_BOOL, 254 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), 255 NULL, NULL, NULL), 256 DEVLINK_PARAM_DRIVER(MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR, 257 "enable_4k_uar", DEVLINK_PARAM_TYPE_BOOL, 258 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), 259 NULL, NULL, NULL), 260 }; 261 262 static void mlx4_devlink_set_params_init_values(struct devlink *devlink) 263 { 264 union devlink_param_value value; 265 266 value.vbool = !!mlx4_internal_err_reset; 267 devl_param_driverinit_value_set(devlink, 268 DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET, 269 value); 270 271 value.vu32 = 1UL << log_num_mac; 272 devl_param_driverinit_value_set(devlink, 273 DEVLINK_PARAM_GENERIC_ID_MAX_MACS, 274 value); 275 276 value.vbool = enable_64b_cqe_eqe; 277 devl_param_driverinit_value_set(devlink, 278 MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE, 279 value); 280 281 value.vbool = enable_4k_uar; 282 devl_param_driverinit_value_set(devlink, 283 MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR, 284 value); 285 286 value.vbool = false; 287 devl_param_driverinit_value_set(devlink, 288 DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT, 289 value); 290 } 291 292 static inline void mlx4_set_num_reserved_uars(struct mlx4_dev *dev, 293 struct mlx4_dev_cap *dev_cap) 294 { 295 /* The reserved_uars is calculated by system page size unit. 296 * Therefore, adjustment is added when the uar page size is less 297 * than the system page size 298 */ 299 dev->caps.reserved_uars = 300 max_t(int, 301 mlx4_get_num_reserved_uar(dev), 302 dev_cap->reserved_uars / 303 (1 << (PAGE_SHIFT - dev->uar_page_shift))); 304 } 305 306 int mlx4_check_port_params(struct mlx4_dev *dev, 307 enum mlx4_port_type *port_type) 308 { 309 int i; 310 311 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) { 312 for (i = 0; i < dev->caps.num_ports - 1; i++) { 313 if (port_type[i] != port_type[i + 1]) { 314 mlx4_err(dev, "Only same port types supported on this HCA, aborting\n"); 315 return -EOPNOTSUPP; 316 } 317 } 318 } 319 320 for (i = 0; i < dev->caps.num_ports; i++) { 321 if (!(port_type[i] & dev->caps.supported_type[i+1])) { 322 mlx4_err(dev, "Requested port type for port %d is not supported on this HCA\n", 323 i + 1); 324 return -EOPNOTSUPP; 325 } 326 } 327 return 0; 328 } 329 330 static void mlx4_set_port_mask(struct mlx4_dev *dev) 331 { 332 int i; 333 334 for (i = 1; i <= dev->caps.num_ports; ++i) 335 dev->caps.port_mask[i] = dev->caps.port_type[i]; 336 } 337 338 enum { 339 MLX4_QUERY_FUNC_NUM_SYS_EQS = 1 << 0, 340 }; 341 342 static int mlx4_query_func(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) 343 { 344 int err = 0; 345 struct mlx4_func func; 346 347 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) { 348 err = mlx4_QUERY_FUNC(dev, &func, 0); 349 if (err) { 350 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n"); 351 return err; 352 } 353 dev_cap->max_eqs = func.max_eq; 354 dev_cap->reserved_eqs = func.rsvd_eqs; 355 dev_cap->reserved_uars = func.rsvd_uars; 356 err |= MLX4_QUERY_FUNC_NUM_SYS_EQS; 357 } 358 return err; 359 } 360 361 static void mlx4_enable_cqe_eqe_stride(struct mlx4_dev *dev) 362 { 363 struct mlx4_caps *dev_cap = &dev->caps; 364 365 /* FW not supporting or cancelled by user */ 366 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_EQE_STRIDE) || 367 !(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_CQE_STRIDE)) 368 return; 369 370 /* Must have 64B CQE_EQE enabled by FW to use bigger stride 371 * When FW has NCSI it may decide not to report 64B CQE/EQEs 372 */ 373 if (!(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_EQE) || 374 !(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_CQE)) { 375 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE; 376 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE; 377 return; 378 } 379 380 if (cache_line_size() == 128 || cache_line_size() == 256) { 381 mlx4_dbg(dev, "Enabling CQE stride cacheLine supported\n"); 382 /* Changing the real data inside CQE size to 32B */ 383 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE; 384 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE; 385 386 if (mlx4_is_master(dev)) 387 dev_cap->function_caps |= MLX4_FUNC_CAP_EQE_CQE_STRIDE; 388 } else { 389 if (cache_line_size() != 32 && cache_line_size() != 64) 390 mlx4_dbg(dev, "Disabling CQE stride, cacheLine size unsupported\n"); 391 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE; 392 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE; 393 } 394 } 395 396 static int _mlx4_dev_port(struct mlx4_dev *dev, int port, 397 struct mlx4_port_cap *port_cap) 398 { 399 dev->caps.vl_cap[port] = port_cap->max_vl; 400 dev->caps.ib_mtu_cap[port] = port_cap->ib_mtu; 401 dev->phys_caps.gid_phys_table_len[port] = port_cap->max_gids; 402 dev->phys_caps.pkey_phys_table_len[port] = port_cap->max_pkeys; 403 /* set gid and pkey table operating lengths by default 404 * to non-sriov values 405 */ 406 dev->caps.gid_table_len[port] = port_cap->max_gids; 407 dev->caps.pkey_table_len[port] = port_cap->max_pkeys; 408 dev->caps.port_width_cap[port] = port_cap->max_port_width; 409 dev->caps.eth_mtu_cap[port] = port_cap->eth_mtu; 410 dev->caps.max_tc_eth = port_cap->max_tc_eth; 411 dev->caps.def_mac[port] = port_cap->def_mac; 412 dev->caps.supported_type[port] = port_cap->supported_port_types; 413 dev->caps.suggested_type[port] = port_cap->suggested_type; 414 dev->caps.default_sense[port] = port_cap->default_sense; 415 dev->caps.trans_type[port] = port_cap->trans_type; 416 dev->caps.vendor_oui[port] = port_cap->vendor_oui; 417 dev->caps.wavelength[port] = port_cap->wavelength; 418 dev->caps.trans_code[port] = port_cap->trans_code; 419 420 return 0; 421 } 422 423 static int mlx4_dev_port(struct mlx4_dev *dev, int port, 424 struct mlx4_port_cap *port_cap) 425 { 426 int err = 0; 427 428 err = mlx4_QUERY_PORT(dev, port, port_cap); 429 430 if (err) 431 mlx4_err(dev, "QUERY_PORT command failed.\n"); 432 433 return err; 434 } 435 436 static inline void mlx4_enable_ignore_fcs(struct mlx4_dev *dev) 437 { 438 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)) 439 return; 440 441 if (mlx4_is_mfunc(dev)) { 442 mlx4_dbg(dev, "SRIOV mode - Disabling Ignore FCS"); 443 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS; 444 return; 445 } 446 447 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)) { 448 mlx4_dbg(dev, 449 "Keep FCS is not supported - Disabling Ignore FCS"); 450 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS; 451 return; 452 } 453 } 454 455 #define MLX4_A0_STEERING_TABLE_SIZE 256 456 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) 457 { 458 int err; 459 int i; 460 461 err = mlx4_QUERY_DEV_CAP(dev, dev_cap); 462 if (err) { 463 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n"); 464 return err; 465 } 466 mlx4_dev_cap_dump(dev, dev_cap); 467 468 if (dev_cap->min_page_sz > PAGE_SIZE) { 469 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n", 470 dev_cap->min_page_sz, PAGE_SIZE); 471 return -ENODEV; 472 } 473 if (dev_cap->num_ports > MLX4_MAX_PORTS) { 474 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n", 475 dev_cap->num_ports, MLX4_MAX_PORTS); 476 return -ENODEV; 477 } 478 479 if (dev_cap->uar_size > pci_resource_len(dev->persist->pdev, 2)) { 480 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n", 481 dev_cap->uar_size, 482 (unsigned long long) 483 pci_resource_len(dev->persist->pdev, 2)); 484 return -ENODEV; 485 } 486 487 dev->caps.num_ports = dev_cap->num_ports; 488 dev->caps.num_sys_eqs = dev_cap->num_sys_eqs; 489 dev->phys_caps.num_phys_eqs = dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS ? 490 dev->caps.num_sys_eqs : 491 MLX4_MAX_EQ_NUM; 492 for (i = 1; i <= dev->caps.num_ports; ++i) { 493 err = _mlx4_dev_port(dev, i, dev_cap->port_cap + i); 494 if (err) { 495 mlx4_err(dev, "QUERY_PORT command failed, aborting\n"); 496 return err; 497 } 498 } 499 500 dev->caps.map_clock_to_user = dev_cap->map_clock_to_user; 501 dev->caps.uar_page_size = PAGE_SIZE; 502 dev->caps.num_uars = dev_cap->uar_size / PAGE_SIZE; 503 dev->caps.local_ca_ack_delay = dev_cap->local_ca_ack_delay; 504 dev->caps.bf_reg_size = dev_cap->bf_reg_size; 505 dev->caps.bf_regs_per_page = dev_cap->bf_regs_per_page; 506 dev->caps.max_sq_sg = dev_cap->max_sq_sg; 507 dev->caps.max_rq_sg = dev_cap->max_rq_sg; 508 dev->caps.max_wqes = dev_cap->max_qp_sz; 509 dev->caps.max_qp_init_rdma = dev_cap->max_requester_per_qp; 510 dev->caps.max_srq_wqes = dev_cap->max_srq_sz; 511 dev->caps.max_srq_sge = dev_cap->max_rq_sg - 1; 512 dev->caps.reserved_srqs = dev_cap->reserved_srqs; 513 dev->caps.max_sq_desc_sz = dev_cap->max_sq_desc_sz; 514 dev->caps.max_rq_desc_sz = dev_cap->max_rq_desc_sz; 515 /* 516 * Subtract 1 from the limit because we need to allocate a 517 * spare CQE to enable resizing the CQ. 518 */ 519 dev->caps.max_cqes = dev_cap->max_cq_sz - 1; 520 dev->caps.reserved_cqs = dev_cap->reserved_cqs; 521 dev->caps.reserved_eqs = dev_cap->reserved_eqs; 522 dev->caps.reserved_mtts = dev_cap->reserved_mtts; 523 dev->caps.reserved_mrws = dev_cap->reserved_mrws; 524 525 dev->caps.reserved_pds = dev_cap->reserved_pds; 526 dev->caps.reserved_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ? 527 dev_cap->reserved_xrcds : 0; 528 dev->caps.max_xrcds = (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) ? 529 dev_cap->max_xrcds : 0; 530 dev->caps.mtt_entry_sz = dev_cap->mtt_entry_sz; 531 532 dev->caps.max_msg_sz = dev_cap->max_msg_sz; 533 dev->caps.page_size_cap = ~(u32) (dev_cap->min_page_sz - 1); 534 dev->caps.flags = dev_cap->flags; 535 dev->caps.flags2 = dev_cap->flags2; 536 dev->caps.bmme_flags = dev_cap->bmme_flags; 537 dev->caps.reserved_lkey = dev_cap->reserved_lkey; 538 dev->caps.stat_rate_support = dev_cap->stat_rate_support; 539 dev->caps.max_gso_sz = dev_cap->max_gso_sz; 540 dev->caps.max_rss_tbl_sz = dev_cap->max_rss_tbl_sz; 541 dev->caps.wol_port[1] = dev_cap->wol_port[1]; 542 dev->caps.wol_port[2] = dev_cap->wol_port[2]; 543 dev->caps.health_buffer_addrs = dev_cap->health_buffer_addrs; 544 545 /* Save uar page shift */ 546 if (!mlx4_is_slave(dev)) { 547 /* Virtual PCI function needs to determine UAR page size from 548 * firmware. Only master PCI function can set the uar page size 549 */ 550 if (enable_4k_uar || !dev->persist->num_vfs) 551 dev->uar_page_shift = DEFAULT_UAR_PAGE_SHIFT; 552 else 553 dev->uar_page_shift = PAGE_SHIFT; 554 555 mlx4_set_num_reserved_uars(dev, dev_cap); 556 } 557 558 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PHV_EN) { 559 struct mlx4_init_hca_param hca_param; 560 561 memset(&hca_param, 0, sizeof(hca_param)); 562 err = mlx4_QUERY_HCA(dev, &hca_param); 563 /* Turn off PHV_EN flag in case phv_check_en is set. 564 * phv_check_en is a HW check that parse the packet and verify 565 * phv bit was reported correctly in the wqe. To allow QinQ 566 * PHV_EN flag should be set and phv_check_en must be cleared 567 * otherwise QinQ packets will be drop by the HW. 568 */ 569 if (err || hca_param.phv_check_en) 570 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_PHV_EN; 571 } 572 573 /* Sense port always allowed on supported devices for ConnectX-1 and -2 */ 574 if (mlx4_priv(dev)->pci_dev_data & MLX4_PCI_DEV_FORCE_SENSE_PORT) 575 dev->caps.flags |= MLX4_DEV_CAP_FLAG_SENSE_SUPPORT; 576 /* Don't do sense port on multifunction devices (for now at least) */ 577 if (mlx4_is_mfunc(dev)) 578 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_SENSE_SUPPORT; 579 580 if (mlx4_low_memory_profile()) { 581 dev->caps.log_num_macs = MLX4_MIN_LOG_NUM_MAC; 582 dev->caps.log_num_vlans = MLX4_MIN_LOG_NUM_VLANS; 583 } else { 584 dev->caps.log_num_macs = log_num_mac; 585 dev->caps.log_num_vlans = MLX4_LOG_NUM_VLANS; 586 } 587 588 for (i = 1; i <= dev->caps.num_ports; ++i) { 589 dev->caps.port_type[i] = MLX4_PORT_TYPE_NONE; 590 if (dev->caps.supported_type[i]) { 591 /* if only ETH is supported - assign ETH */ 592 if (dev->caps.supported_type[i] == MLX4_PORT_TYPE_ETH) 593 dev->caps.port_type[i] = MLX4_PORT_TYPE_ETH; 594 /* if only IB is supported, assign IB */ 595 else if (dev->caps.supported_type[i] == 596 MLX4_PORT_TYPE_IB) 597 dev->caps.port_type[i] = MLX4_PORT_TYPE_IB; 598 else { 599 /* if IB and ETH are supported, we set the port 600 * type according to user selection of port type; 601 * if user selected none, take the FW hint */ 602 if (port_type_array[i - 1] == MLX4_PORT_TYPE_NONE) 603 dev->caps.port_type[i] = dev->caps.suggested_type[i] ? 604 MLX4_PORT_TYPE_ETH : MLX4_PORT_TYPE_IB; 605 else 606 dev->caps.port_type[i] = port_type_array[i - 1]; 607 } 608 } 609 /* 610 * Link sensing is allowed on the port if 3 conditions are true: 611 * 1. Both protocols are supported on the port. 612 * 2. Different types are supported on the port 613 * 3. FW declared that it supports link sensing 614 */ 615 mlx4_priv(dev)->sense.sense_allowed[i] = 616 ((dev->caps.supported_type[i] == MLX4_PORT_TYPE_AUTO) && 617 (dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) && 618 (dev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)); 619 620 /* 621 * If "default_sense" bit is set, we move the port to "AUTO" mode 622 * and perform sense_port FW command to try and set the correct 623 * port type from beginning 624 */ 625 if (mlx4_priv(dev)->sense.sense_allowed[i] && dev->caps.default_sense[i]) { 626 enum mlx4_port_type sensed_port = MLX4_PORT_TYPE_NONE; 627 dev->caps.possible_type[i] = MLX4_PORT_TYPE_AUTO; 628 mlx4_SENSE_PORT(dev, i, &sensed_port); 629 if (sensed_port != MLX4_PORT_TYPE_NONE) 630 dev->caps.port_type[i] = sensed_port; 631 } else { 632 dev->caps.possible_type[i] = dev->caps.port_type[i]; 633 } 634 635 if (dev->caps.log_num_macs > dev_cap->port_cap[i].log_max_macs) { 636 dev->caps.log_num_macs = dev_cap->port_cap[i].log_max_macs; 637 mlx4_warn(dev, "Requested number of MACs is too much for port %d, reducing to %d\n", 638 i, 1 << dev->caps.log_num_macs); 639 } 640 if (dev->caps.log_num_vlans > dev_cap->port_cap[i].log_max_vlans) { 641 dev->caps.log_num_vlans = dev_cap->port_cap[i].log_max_vlans; 642 mlx4_warn(dev, "Requested number of VLANs is too much for port %d, reducing to %d\n", 643 i, 1 << dev->caps.log_num_vlans); 644 } 645 } 646 647 if (mlx4_is_master(dev) && (dev->caps.num_ports == 2) && 648 (port_type_array[0] == MLX4_PORT_TYPE_IB) && 649 (port_type_array[1] == MLX4_PORT_TYPE_ETH)) { 650 mlx4_warn(dev, 651 "Granular QoS per VF not supported with IB/Eth configuration\n"); 652 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_QOS_VPP; 653 } 654 655 dev->caps.max_counters = dev_cap->max_counters; 656 657 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] = dev_cap->reserved_qps; 658 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] = 659 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] = 660 (1 << dev->caps.log_num_macs) * 661 (1 << dev->caps.log_num_vlans) * 662 dev->caps.num_ports; 663 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH] = MLX4_NUM_FEXCH; 664 665 if (dev_cap->dmfs_high_rate_qpn_base > 0 && 666 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN) 667 dev->caps.dmfs_high_rate_qpn_base = dev_cap->dmfs_high_rate_qpn_base; 668 else 669 dev->caps.dmfs_high_rate_qpn_base = 670 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW]; 671 672 if (dev_cap->dmfs_high_rate_qpn_range > 0 && 673 dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_FS_EN) { 674 dev->caps.dmfs_high_rate_qpn_range = dev_cap->dmfs_high_rate_qpn_range; 675 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DEFAULT; 676 dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_FS_A0; 677 } else { 678 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_NOT_SUPPORTED; 679 dev->caps.dmfs_high_rate_qpn_base = 680 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW]; 681 dev->caps.dmfs_high_rate_qpn_range = MLX4_A0_STEERING_TABLE_SIZE; 682 } 683 684 dev->caps.rl_caps = dev_cap->rl_caps; 685 686 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_RSS_RAW_ETH] = 687 dev->caps.dmfs_high_rate_qpn_range; 688 689 dev->caps.reserved_qps = dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW] + 690 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_ETH_ADDR] + 691 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_ADDR] + 692 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FC_EXCH]; 693 694 dev->caps.sqp_demux = (mlx4_is_master(dev)) ? MLX4_MAX_NUM_SLAVES : 0; 695 696 if (!enable_64b_cqe_eqe && !mlx4_is_slave(dev)) { 697 if (dev_cap->flags & 698 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) { 699 mlx4_warn(dev, "64B EQEs/CQEs supported by the device but not enabled\n"); 700 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE; 701 dev->caps.flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE; 702 } 703 704 if (dev_cap->flags2 & 705 (MLX4_DEV_CAP_FLAG2_CQE_STRIDE | 706 MLX4_DEV_CAP_FLAG2_EQE_STRIDE)) { 707 mlx4_warn(dev, "Disabling EQE/CQE stride per user request\n"); 708 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE; 709 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE; 710 } 711 } 712 713 if ((dev->caps.flags & 714 (MLX4_DEV_CAP_FLAG_64B_CQE | MLX4_DEV_CAP_FLAG_64B_EQE)) && 715 mlx4_is_master(dev)) 716 dev->caps.function_caps |= MLX4_FUNC_CAP_64B_EQE_CQE; 717 718 if (!mlx4_is_slave(dev)) { 719 mlx4_enable_cqe_eqe_stride(dev); 720 dev->caps.alloc_res_qp_mask = 721 (dev->caps.bf_reg_size ? MLX4_RESERVE_ETH_BF_QP : 0) | 722 MLX4_RESERVE_A0_QP; 723 724 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_ETS_CFG) && 725 dev->caps.flags & MLX4_DEV_CAP_FLAG_SET_ETH_SCHED) { 726 mlx4_warn(dev, "Old device ETS support detected\n"); 727 mlx4_warn(dev, "Consider upgrading device FW.\n"); 728 dev->caps.flags2 |= MLX4_DEV_CAP_FLAG2_ETS_CFG; 729 } 730 731 } else { 732 dev->caps.alloc_res_qp_mask = 0; 733 } 734 735 mlx4_enable_ignore_fcs(dev); 736 737 return 0; 738 } 739 740 /*The function checks if there are live vf, return the num of them*/ 741 static int mlx4_how_many_lives_vf(struct mlx4_dev *dev) 742 { 743 struct mlx4_priv *priv = mlx4_priv(dev); 744 struct mlx4_slave_state *s_state; 745 int i; 746 int ret = 0; 747 748 for (i = 1/*the ppf is 0*/; i < dev->num_slaves; ++i) { 749 s_state = &priv->mfunc.master.slave_state[i]; 750 if (s_state->active && s_state->last_cmd != 751 MLX4_COMM_CMD_RESET) { 752 mlx4_warn(dev, "%s: slave: %d is still active\n", 753 __func__, i); 754 ret++; 755 } 756 } 757 return ret; 758 } 759 760 int mlx4_get_parav_qkey(struct mlx4_dev *dev, u32 qpn, u32 *qkey) 761 { 762 u32 qk = MLX4_RESERVED_QKEY_BASE; 763 764 if (qpn >= dev->phys_caps.base_tunnel_sqpn + 8 * MLX4_MFUNC_MAX || 765 qpn < dev->phys_caps.base_proxy_sqpn) 766 return -EINVAL; 767 768 if (qpn >= dev->phys_caps.base_tunnel_sqpn) 769 /* tunnel qp */ 770 qk += qpn - dev->phys_caps.base_tunnel_sqpn; 771 else 772 qk += qpn - dev->phys_caps.base_proxy_sqpn; 773 *qkey = qk; 774 return 0; 775 } 776 EXPORT_SYMBOL(mlx4_get_parav_qkey); 777 778 void mlx4_sync_pkey_table(struct mlx4_dev *dev, int slave, int port, int i, int val) 779 { 780 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev); 781 782 if (!mlx4_is_master(dev)) 783 return; 784 785 priv->virt2phys_pkey[slave][port - 1][i] = val; 786 } 787 EXPORT_SYMBOL(mlx4_sync_pkey_table); 788 789 void mlx4_put_slave_node_guid(struct mlx4_dev *dev, int slave, __be64 guid) 790 { 791 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev); 792 793 if (!mlx4_is_master(dev)) 794 return; 795 796 priv->slave_node_guids[slave] = guid; 797 } 798 EXPORT_SYMBOL(mlx4_put_slave_node_guid); 799 800 __be64 mlx4_get_slave_node_guid(struct mlx4_dev *dev, int slave) 801 { 802 struct mlx4_priv *priv = container_of(dev, struct mlx4_priv, dev); 803 804 if (!mlx4_is_master(dev)) 805 return 0; 806 807 return priv->slave_node_guids[slave]; 808 } 809 EXPORT_SYMBOL(mlx4_get_slave_node_guid); 810 811 int mlx4_is_slave_active(struct mlx4_dev *dev, int slave) 812 { 813 struct mlx4_priv *priv = mlx4_priv(dev); 814 struct mlx4_slave_state *s_slave; 815 816 if (!mlx4_is_master(dev)) 817 return 0; 818 819 s_slave = &priv->mfunc.master.slave_state[slave]; 820 return !!s_slave->active; 821 } 822 EXPORT_SYMBOL(mlx4_is_slave_active); 823 824 void mlx4_handle_eth_header_mcast_prio(struct mlx4_net_trans_rule_hw_ctrl *ctrl, 825 struct _rule_hw *eth_header) 826 { 827 if (is_multicast_ether_addr(eth_header->eth.dst_mac) || 828 is_broadcast_ether_addr(eth_header->eth.dst_mac)) { 829 struct mlx4_net_trans_rule_hw_eth *eth = 830 (struct mlx4_net_trans_rule_hw_eth *)eth_header; 831 struct _rule_hw *next_rule = (struct _rule_hw *)(eth + 1); 832 bool last_rule = next_rule->size == 0 && next_rule->id == 0 && 833 next_rule->rsvd == 0; 834 835 if (last_rule) 836 ctrl->prio = cpu_to_be16(MLX4_DOMAIN_NIC); 837 } 838 } 839 EXPORT_SYMBOL(mlx4_handle_eth_header_mcast_prio); 840 841 static void slave_adjust_steering_mode(struct mlx4_dev *dev, 842 struct mlx4_dev_cap *dev_cap, 843 struct mlx4_init_hca_param *hca_param) 844 { 845 dev->caps.steering_mode = hca_param->steering_mode; 846 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED) { 847 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry; 848 dev->caps.fs_log_max_ucast_qp_range_size = 849 dev_cap->fs_log_max_ucast_qp_range_size; 850 } else 851 dev->caps.num_qp_per_mgm = 852 4 * ((1 << hca_param->log_mc_entry_sz)/16 - 2); 853 854 mlx4_dbg(dev, "Steering mode is: %s\n", 855 mlx4_steering_mode_str(dev->caps.steering_mode)); 856 } 857 858 static void mlx4_slave_destroy_special_qp_cap(struct mlx4_dev *dev) 859 { 860 kfree(dev->caps.spec_qps); 861 dev->caps.spec_qps = NULL; 862 } 863 864 static int mlx4_slave_special_qp_cap(struct mlx4_dev *dev) 865 { 866 struct mlx4_func_cap *func_cap; 867 struct mlx4_caps *caps = &dev->caps; 868 int i, err = 0; 869 870 func_cap = kzalloc(sizeof(*func_cap), GFP_KERNEL); 871 caps->spec_qps = kcalloc(caps->num_ports, sizeof(*caps->spec_qps), GFP_KERNEL); 872 873 if (!func_cap || !caps->spec_qps) { 874 mlx4_err(dev, "Failed to allocate memory for special qps cap\n"); 875 err = -ENOMEM; 876 goto err_mem; 877 } 878 879 for (i = 1; i <= caps->num_ports; ++i) { 880 err = mlx4_QUERY_FUNC_CAP(dev, i, func_cap); 881 if (err) { 882 mlx4_err(dev, "QUERY_FUNC_CAP port command failed for port %d, aborting (%d)\n", 883 i, err); 884 goto err_mem; 885 } 886 caps->spec_qps[i - 1] = func_cap->spec_qps; 887 caps->port_mask[i] = caps->port_type[i]; 888 caps->phys_port_id[i] = func_cap->phys_port_id; 889 err = mlx4_get_slave_pkey_gid_tbl_len(dev, i, 890 &caps->gid_table_len[i], 891 &caps->pkey_table_len[i]); 892 if (err) { 893 mlx4_err(dev, "QUERY_PORT command failed for port %d, aborting (%d)\n", 894 i, err); 895 goto err_mem; 896 } 897 } 898 899 err_mem: 900 if (err) 901 mlx4_slave_destroy_special_qp_cap(dev); 902 kfree(func_cap); 903 return err; 904 } 905 906 static int mlx4_slave_cap(struct mlx4_dev *dev) 907 { 908 int err; 909 u32 page_size; 910 struct mlx4_dev_cap *dev_cap; 911 struct mlx4_func_cap *func_cap; 912 struct mlx4_init_hca_param *hca_param; 913 914 hca_param = kzalloc(sizeof(*hca_param), GFP_KERNEL); 915 func_cap = kzalloc(sizeof(*func_cap), GFP_KERNEL); 916 dev_cap = kzalloc(sizeof(*dev_cap), GFP_KERNEL); 917 if (!hca_param || !func_cap || !dev_cap) { 918 mlx4_err(dev, "Failed to allocate memory for slave_cap\n"); 919 err = -ENOMEM; 920 goto free_mem; 921 } 922 923 err = mlx4_QUERY_HCA(dev, hca_param); 924 if (err) { 925 mlx4_err(dev, "QUERY_HCA command failed, aborting\n"); 926 goto free_mem; 927 } 928 929 /* fail if the hca has an unknown global capability 930 * at this time global_caps should be always zeroed 931 */ 932 if (hca_param->global_caps) { 933 mlx4_err(dev, "Unknown hca global capabilities\n"); 934 err = -EINVAL; 935 goto free_mem; 936 } 937 938 dev->caps.hca_core_clock = hca_param->hca_core_clock; 939 940 dev->caps.max_qp_dest_rdma = 1 << hca_param->log_rd_per_qp; 941 err = mlx4_dev_cap(dev, dev_cap); 942 if (err) { 943 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n"); 944 goto free_mem; 945 } 946 947 err = mlx4_QUERY_FW(dev); 948 if (err) 949 mlx4_err(dev, "QUERY_FW command failed: could not get FW version\n"); 950 951 page_size = ~dev->caps.page_size_cap + 1; 952 mlx4_warn(dev, "HCA minimum page size:%d\n", page_size); 953 if (page_size > PAGE_SIZE) { 954 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n", 955 page_size, PAGE_SIZE); 956 err = -ENODEV; 957 goto free_mem; 958 } 959 960 /* Set uar_page_shift for VF */ 961 dev->uar_page_shift = hca_param->uar_page_sz + 12; 962 963 /* Make sure the master uar page size is valid */ 964 if (dev->uar_page_shift > PAGE_SHIFT) { 965 mlx4_err(dev, 966 "Invalid configuration: uar page size is larger than system page size\n"); 967 err = -ENODEV; 968 goto free_mem; 969 } 970 971 /* Set reserved_uars based on the uar_page_shift */ 972 mlx4_set_num_reserved_uars(dev, dev_cap); 973 974 /* Although uar page size in FW differs from system page size, 975 * upper software layers (mlx4_ib, mlx4_en and part of mlx4_core) 976 * still works with assumption that uar page size == system page size 977 */ 978 dev->caps.uar_page_size = PAGE_SIZE; 979 980 err = mlx4_QUERY_FUNC_CAP(dev, 0, func_cap); 981 if (err) { 982 mlx4_err(dev, "QUERY_FUNC_CAP general command failed, aborting (%d)\n", 983 err); 984 goto free_mem; 985 } 986 987 if ((func_cap->pf_context_behaviour | PF_CONTEXT_BEHAVIOUR_MASK) != 988 PF_CONTEXT_BEHAVIOUR_MASK) { 989 mlx4_err(dev, "Unknown pf context behaviour %x known flags %x\n", 990 func_cap->pf_context_behaviour, 991 PF_CONTEXT_BEHAVIOUR_MASK); 992 err = -EINVAL; 993 goto free_mem; 994 } 995 996 dev->caps.num_ports = func_cap->num_ports; 997 dev->quotas.qp = func_cap->qp_quota; 998 dev->quotas.srq = func_cap->srq_quota; 999 dev->quotas.cq = func_cap->cq_quota; 1000 dev->quotas.mpt = func_cap->mpt_quota; 1001 dev->quotas.mtt = func_cap->mtt_quota; 1002 dev->caps.num_qps = 1 << hca_param->log_num_qps; 1003 dev->caps.num_srqs = 1 << hca_param->log_num_srqs; 1004 dev->caps.num_cqs = 1 << hca_param->log_num_cqs; 1005 dev->caps.num_mpts = 1 << hca_param->log_mpt_sz; 1006 dev->caps.num_eqs = func_cap->max_eq; 1007 dev->caps.reserved_eqs = func_cap->reserved_eq; 1008 dev->caps.reserved_lkey = func_cap->reserved_lkey; 1009 dev->caps.num_pds = MLX4_NUM_PDS; 1010 dev->caps.num_mgms = 0; 1011 dev->caps.num_amgms = 0; 1012 1013 if (dev->caps.num_ports > MLX4_MAX_PORTS) { 1014 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n", 1015 dev->caps.num_ports, MLX4_MAX_PORTS); 1016 err = -ENODEV; 1017 goto free_mem; 1018 } 1019 1020 mlx4_replace_zero_macs(dev); 1021 1022 err = mlx4_slave_special_qp_cap(dev); 1023 if (err) { 1024 mlx4_err(dev, "Set special QP caps failed. aborting\n"); 1025 goto free_mem; 1026 } 1027 1028 if (dev->caps.uar_page_size * (dev->caps.num_uars - 1029 dev->caps.reserved_uars) > 1030 pci_resource_len(dev->persist->pdev, 1031 2)) { 1032 mlx4_err(dev, "HCA reported UAR region size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n", 1033 dev->caps.uar_page_size * dev->caps.num_uars, 1034 (unsigned long long) 1035 pci_resource_len(dev->persist->pdev, 2)); 1036 err = -ENOMEM; 1037 goto err_mem; 1038 } 1039 1040 if (hca_param->dev_cap_enabled & MLX4_DEV_CAP_64B_EQE_ENABLED) { 1041 dev->caps.eqe_size = 64; 1042 dev->caps.eqe_factor = 1; 1043 } else { 1044 dev->caps.eqe_size = 32; 1045 dev->caps.eqe_factor = 0; 1046 } 1047 1048 if (hca_param->dev_cap_enabled & MLX4_DEV_CAP_64B_CQE_ENABLED) { 1049 dev->caps.cqe_size = 64; 1050 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE; 1051 } else { 1052 dev->caps.cqe_size = 32; 1053 } 1054 1055 if (hca_param->dev_cap_enabled & MLX4_DEV_CAP_EQE_STRIDE_ENABLED) { 1056 dev->caps.eqe_size = hca_param->eqe_size; 1057 dev->caps.eqe_factor = 0; 1058 } 1059 1060 if (hca_param->dev_cap_enabled & MLX4_DEV_CAP_CQE_STRIDE_ENABLED) { 1061 dev->caps.cqe_size = hca_param->cqe_size; 1062 /* User still need to know when CQE > 32B */ 1063 dev->caps.userspace_caps |= MLX4_USER_DEV_CAP_LARGE_CQE; 1064 } 1065 1066 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS; 1067 mlx4_warn(dev, "Timestamping is not supported in slave mode\n"); 1068 1069 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_USER_MAC_EN; 1070 mlx4_dbg(dev, "User MAC FW update is not supported in slave mode\n"); 1071 1072 slave_adjust_steering_mode(dev, dev_cap, hca_param); 1073 mlx4_dbg(dev, "RSS support for IP fragments is %s\n", 1074 hca_param->rss_ip_frags ? "on" : "off"); 1075 1076 if (func_cap->extra_flags & MLX4_QUERY_FUNC_FLAGS_BF_RES_QP && 1077 dev->caps.bf_reg_size) 1078 dev->caps.alloc_res_qp_mask |= MLX4_RESERVE_ETH_BF_QP; 1079 1080 if (func_cap->extra_flags & MLX4_QUERY_FUNC_FLAGS_A0_RES_QP) 1081 dev->caps.alloc_res_qp_mask |= MLX4_RESERVE_A0_QP; 1082 1083 err_mem: 1084 if (err) 1085 mlx4_slave_destroy_special_qp_cap(dev); 1086 free_mem: 1087 kfree(hca_param); 1088 kfree(func_cap); 1089 kfree(dev_cap); 1090 return err; 1091 } 1092 1093 /* 1094 * Change the port configuration of the device. 1095 * Every user of this function must hold the port mutex. 1096 */ 1097 int mlx4_change_port_types(struct mlx4_dev *dev, 1098 enum mlx4_port_type *port_types) 1099 { 1100 int err = 0; 1101 int change = 0; 1102 int port; 1103 1104 for (port = 0; port < dev->caps.num_ports; port++) { 1105 /* Change the port type only if the new type is different 1106 * from the current, and not set to Auto */ 1107 if (port_types[port] != dev->caps.port_type[port + 1]) 1108 change = 1; 1109 } 1110 if (change) { 1111 mlx4_unregister_device(dev); 1112 for (port = 1; port <= dev->caps.num_ports; port++) { 1113 mlx4_CLOSE_PORT(dev, port); 1114 dev->caps.port_type[port] = port_types[port - 1]; 1115 err = mlx4_SET_PORT(dev, port, -1); 1116 if (err) { 1117 mlx4_err(dev, "Failed to set port %d, aborting\n", 1118 port); 1119 goto out; 1120 } 1121 } 1122 mlx4_set_port_mask(dev); 1123 err = mlx4_register_device(dev); 1124 if (err) { 1125 mlx4_err(dev, "Failed to register device\n"); 1126 goto out; 1127 } 1128 } 1129 1130 out: 1131 return err; 1132 } 1133 1134 static ssize_t show_port_type(struct device *dev, 1135 struct device_attribute *attr, 1136 char *buf) 1137 { 1138 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info, 1139 port_attr); 1140 struct mlx4_dev *mdev = info->dev; 1141 char type[8]; 1142 1143 sprintf(type, "%s", 1144 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ? 1145 "ib" : "eth"); 1146 if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO) 1147 sprintf(buf, "auto (%s)\n", type); 1148 else 1149 sprintf(buf, "%s\n", type); 1150 1151 return strlen(buf); 1152 } 1153 1154 static int __set_port_type(struct mlx4_port_info *info, 1155 enum mlx4_port_type port_type) 1156 { 1157 struct mlx4_dev *mdev = info->dev; 1158 struct mlx4_priv *priv = mlx4_priv(mdev); 1159 enum mlx4_port_type types[MLX4_MAX_PORTS]; 1160 enum mlx4_port_type new_types[MLX4_MAX_PORTS]; 1161 int i; 1162 int err = 0; 1163 1164 if ((port_type & mdev->caps.supported_type[info->port]) != port_type) { 1165 mlx4_err(mdev, 1166 "Requested port type for port %d is not supported on this HCA\n", 1167 info->port); 1168 return -EOPNOTSUPP; 1169 } 1170 1171 mlx4_stop_sense(mdev); 1172 mutex_lock(&priv->port_mutex); 1173 info->tmp_type = port_type; 1174 1175 /* Possible type is always the one that was delivered */ 1176 mdev->caps.possible_type[info->port] = info->tmp_type; 1177 1178 for (i = 0; i < mdev->caps.num_ports; i++) { 1179 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type : 1180 mdev->caps.possible_type[i+1]; 1181 if (types[i] == MLX4_PORT_TYPE_AUTO) 1182 types[i] = mdev->caps.port_type[i+1]; 1183 } 1184 1185 if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) && 1186 !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) { 1187 for (i = 1; i <= mdev->caps.num_ports; i++) { 1188 if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) { 1189 mdev->caps.possible_type[i] = mdev->caps.port_type[i]; 1190 err = -EOPNOTSUPP; 1191 } 1192 } 1193 } 1194 if (err) { 1195 mlx4_err(mdev, "Auto sensing is not supported on this HCA. Set only 'eth' or 'ib' for both ports (should be the same)\n"); 1196 goto out; 1197 } 1198 1199 mlx4_do_sense_ports(mdev, new_types, types); 1200 1201 err = mlx4_check_port_params(mdev, new_types); 1202 if (err) 1203 goto out; 1204 1205 /* We are about to apply the changes after the configuration 1206 * was verified, no need to remember the temporary types 1207 * any more */ 1208 for (i = 0; i < mdev->caps.num_ports; i++) 1209 priv->port[i + 1].tmp_type = 0; 1210 1211 err = mlx4_change_port_types(mdev, new_types); 1212 1213 out: 1214 mlx4_start_sense(mdev); 1215 mutex_unlock(&priv->port_mutex); 1216 1217 return err; 1218 } 1219 1220 static ssize_t set_port_type(struct device *dev, 1221 struct device_attribute *attr, 1222 const char *buf, size_t count) 1223 { 1224 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info, 1225 port_attr); 1226 struct mlx4_dev *mdev = info->dev; 1227 enum mlx4_port_type port_type; 1228 static DEFINE_MUTEX(set_port_type_mutex); 1229 int err; 1230 1231 mutex_lock(&set_port_type_mutex); 1232 1233 if (!strcmp(buf, "ib\n")) { 1234 port_type = MLX4_PORT_TYPE_IB; 1235 } else if (!strcmp(buf, "eth\n")) { 1236 port_type = MLX4_PORT_TYPE_ETH; 1237 } else if (!strcmp(buf, "auto\n")) { 1238 port_type = MLX4_PORT_TYPE_AUTO; 1239 } else { 1240 mlx4_err(mdev, "%s is not supported port type\n", buf); 1241 err = -EINVAL; 1242 goto err_out; 1243 } 1244 1245 err = __set_port_type(info, port_type); 1246 1247 err_out: 1248 mutex_unlock(&set_port_type_mutex); 1249 1250 return err ? err : count; 1251 } 1252 1253 enum ibta_mtu { 1254 IB_MTU_256 = 1, 1255 IB_MTU_512 = 2, 1256 IB_MTU_1024 = 3, 1257 IB_MTU_2048 = 4, 1258 IB_MTU_4096 = 5 1259 }; 1260 1261 static inline int int_to_ibta_mtu(int mtu) 1262 { 1263 switch (mtu) { 1264 case 256: return IB_MTU_256; 1265 case 512: return IB_MTU_512; 1266 case 1024: return IB_MTU_1024; 1267 case 2048: return IB_MTU_2048; 1268 case 4096: return IB_MTU_4096; 1269 default: return -1; 1270 } 1271 } 1272 1273 static inline int ibta_mtu_to_int(enum ibta_mtu mtu) 1274 { 1275 switch (mtu) { 1276 case IB_MTU_256: return 256; 1277 case IB_MTU_512: return 512; 1278 case IB_MTU_1024: return 1024; 1279 case IB_MTU_2048: return 2048; 1280 case IB_MTU_4096: return 4096; 1281 default: return -1; 1282 } 1283 } 1284 1285 static ssize_t show_port_ib_mtu(struct device *dev, 1286 struct device_attribute *attr, 1287 char *buf) 1288 { 1289 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info, 1290 port_mtu_attr); 1291 struct mlx4_dev *mdev = info->dev; 1292 1293 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) 1294 mlx4_warn(mdev, "port level mtu is only used for IB ports\n"); 1295 1296 sprintf(buf, "%d\n", 1297 ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port])); 1298 return strlen(buf); 1299 } 1300 1301 static ssize_t set_port_ib_mtu(struct device *dev, 1302 struct device_attribute *attr, 1303 const char *buf, size_t count) 1304 { 1305 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info, 1306 port_mtu_attr); 1307 struct mlx4_dev *mdev = info->dev; 1308 struct mlx4_priv *priv = mlx4_priv(mdev); 1309 int err, port, mtu, ibta_mtu = -1; 1310 1311 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) { 1312 mlx4_warn(mdev, "port level mtu is only used for IB ports\n"); 1313 return -EINVAL; 1314 } 1315 1316 err = kstrtoint(buf, 0, &mtu); 1317 if (!err) 1318 ibta_mtu = int_to_ibta_mtu(mtu); 1319 1320 if (err || ibta_mtu < 0) { 1321 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf); 1322 return -EINVAL; 1323 } 1324 1325 mdev->caps.port_ib_mtu[info->port] = ibta_mtu; 1326 1327 mlx4_stop_sense(mdev); 1328 mutex_lock(&priv->port_mutex); 1329 mlx4_unregister_device(mdev); 1330 for (port = 1; port <= mdev->caps.num_ports; port++) { 1331 mlx4_CLOSE_PORT(mdev, port); 1332 err = mlx4_SET_PORT(mdev, port, -1); 1333 if (err) { 1334 mlx4_err(mdev, "Failed to set port %d, aborting\n", 1335 port); 1336 goto err_set_port; 1337 } 1338 } 1339 err = mlx4_register_device(mdev); 1340 err_set_port: 1341 mutex_unlock(&priv->port_mutex); 1342 mlx4_start_sense(mdev); 1343 return err ? err : count; 1344 } 1345 1346 /* bond for multi-function device */ 1347 #define MAX_MF_BOND_ALLOWED_SLAVES 63 1348 static int mlx4_mf_bond(struct mlx4_dev *dev) 1349 { 1350 int err = 0; 1351 int nvfs; 1352 struct mlx4_slaves_pport slaves_port1; 1353 struct mlx4_slaves_pport slaves_port2; 1354 1355 slaves_port1 = mlx4_phys_to_slaves_pport(dev, 1); 1356 slaves_port2 = mlx4_phys_to_slaves_pport(dev, 2); 1357 1358 /* only single port vfs are allowed */ 1359 if (bitmap_weight_and(slaves_port1.slaves, slaves_port2.slaves, 1360 dev->persist->num_vfs + 1) > 1) { 1361 mlx4_warn(dev, "HA mode unsupported for dual ported VFs\n"); 1362 return -EINVAL; 1363 } 1364 1365 /* number of virtual functions is number of total functions minus one 1366 * physical function for each port. 1367 */ 1368 nvfs = bitmap_weight(slaves_port1.slaves, dev->persist->num_vfs + 1) + 1369 bitmap_weight(slaves_port2.slaves, dev->persist->num_vfs + 1) - 2; 1370 1371 /* limit on maximum allowed VFs */ 1372 if (nvfs > MAX_MF_BOND_ALLOWED_SLAVES) { 1373 mlx4_warn(dev, "HA mode is not supported for %d VFs (max %d are allowed)\n", 1374 nvfs, MAX_MF_BOND_ALLOWED_SLAVES); 1375 return -EINVAL; 1376 } 1377 1378 if (dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED) { 1379 mlx4_warn(dev, "HA mode unsupported for NON DMFS steering\n"); 1380 return -EINVAL; 1381 } 1382 1383 err = mlx4_bond_mac_table(dev); 1384 if (err) 1385 return err; 1386 err = mlx4_bond_vlan_table(dev); 1387 if (err) 1388 goto err1; 1389 err = mlx4_bond_fs_rules(dev); 1390 if (err) 1391 goto err2; 1392 1393 return 0; 1394 err2: 1395 (void)mlx4_unbond_vlan_table(dev); 1396 err1: 1397 (void)mlx4_unbond_mac_table(dev); 1398 return err; 1399 } 1400 1401 static int mlx4_mf_unbond(struct mlx4_dev *dev) 1402 { 1403 int ret, ret1; 1404 1405 ret = mlx4_unbond_fs_rules(dev); 1406 if (ret) 1407 mlx4_warn(dev, "multifunction unbond for flow rules failed (%d)\n", ret); 1408 ret1 = mlx4_unbond_mac_table(dev); 1409 if (ret1) { 1410 mlx4_warn(dev, "multifunction unbond for MAC table failed (%d)\n", ret1); 1411 ret = ret1; 1412 } 1413 ret1 = mlx4_unbond_vlan_table(dev); 1414 if (ret1) { 1415 mlx4_warn(dev, "multifunction unbond for VLAN table failed (%d)\n", ret1); 1416 ret = ret1; 1417 } 1418 return ret; 1419 } 1420 1421 static int mlx4_bond(struct mlx4_dev *dev) 1422 { 1423 int ret = 0; 1424 struct mlx4_priv *priv = mlx4_priv(dev); 1425 1426 mutex_lock(&priv->bond_mutex); 1427 1428 if (!mlx4_is_bonded(dev)) { 1429 ret = mlx4_do_bond(dev, true); 1430 if (ret) 1431 mlx4_err(dev, "Failed to bond device: %d\n", ret); 1432 if (!ret && mlx4_is_master(dev)) { 1433 ret = mlx4_mf_bond(dev); 1434 if (ret) { 1435 mlx4_err(dev, "bond for multifunction failed\n"); 1436 mlx4_do_bond(dev, false); 1437 } 1438 } 1439 } 1440 1441 mutex_unlock(&priv->bond_mutex); 1442 if (!ret) 1443 mlx4_dbg(dev, "Device is bonded\n"); 1444 1445 return ret; 1446 } 1447 1448 static int mlx4_unbond(struct mlx4_dev *dev) 1449 { 1450 int ret = 0; 1451 struct mlx4_priv *priv = mlx4_priv(dev); 1452 1453 mutex_lock(&priv->bond_mutex); 1454 1455 if (mlx4_is_bonded(dev)) { 1456 int ret2 = 0; 1457 1458 ret = mlx4_do_bond(dev, false); 1459 if (ret) 1460 mlx4_err(dev, "Failed to unbond device: %d\n", ret); 1461 if (mlx4_is_master(dev)) 1462 ret2 = mlx4_mf_unbond(dev); 1463 if (ret2) { 1464 mlx4_warn(dev, "Failed to unbond device for multifunction (%d)\n", ret2); 1465 ret = ret2; 1466 } 1467 } 1468 1469 mutex_unlock(&priv->bond_mutex); 1470 if (!ret) 1471 mlx4_dbg(dev, "Device is unbonded\n"); 1472 1473 return ret; 1474 } 1475 1476 static int mlx4_port_map_set(struct mlx4_dev *dev, struct mlx4_port_map *v2p) 1477 { 1478 u8 port1 = v2p->port1; 1479 u8 port2 = v2p->port2; 1480 struct mlx4_priv *priv = mlx4_priv(dev); 1481 int err; 1482 1483 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP)) 1484 return -EOPNOTSUPP; 1485 1486 mutex_lock(&priv->bond_mutex); 1487 1488 /* zero means keep current mapping for this port */ 1489 if (port1 == 0) 1490 port1 = priv->v2p.port1; 1491 if (port2 == 0) 1492 port2 = priv->v2p.port2; 1493 1494 if ((port1 < 1) || (port1 > MLX4_MAX_PORTS) || 1495 (port2 < 1) || (port2 > MLX4_MAX_PORTS) || 1496 (port1 == 2 && port2 == 1)) { 1497 /* besides boundary checks cross mapping makes 1498 * no sense and therefore not allowed */ 1499 err = -EINVAL; 1500 } else if ((port1 == priv->v2p.port1) && 1501 (port2 == priv->v2p.port2)) { 1502 err = 0; 1503 } else { 1504 err = mlx4_virt2phy_port_map(dev, port1, port2); 1505 if (!err) { 1506 mlx4_dbg(dev, "port map changed: [%d][%d]\n", 1507 port1, port2); 1508 priv->v2p.port1 = port1; 1509 priv->v2p.port2 = port2; 1510 } else { 1511 mlx4_err(dev, "Failed to change port mape: %d\n", err); 1512 } 1513 } 1514 1515 mutex_unlock(&priv->bond_mutex); 1516 return err; 1517 } 1518 1519 struct mlx4_bond { 1520 struct work_struct work; 1521 struct mlx4_dev *dev; 1522 int is_bonded; 1523 struct mlx4_port_map port_map; 1524 }; 1525 1526 static void mlx4_bond_work(struct work_struct *work) 1527 { 1528 struct mlx4_bond *bond = container_of(work, struct mlx4_bond, work); 1529 int err = 0; 1530 1531 if (bond->is_bonded) { 1532 if (!mlx4_is_bonded(bond->dev)) { 1533 err = mlx4_bond(bond->dev); 1534 if (err) 1535 mlx4_err(bond->dev, "Fail to bond device\n"); 1536 } 1537 if (!err) { 1538 err = mlx4_port_map_set(bond->dev, &bond->port_map); 1539 if (err) 1540 mlx4_err(bond->dev, 1541 "Fail to set port map [%d][%d]: %d\n", 1542 bond->port_map.port1, 1543 bond->port_map.port2, err); 1544 } 1545 } else if (mlx4_is_bonded(bond->dev)) { 1546 err = mlx4_unbond(bond->dev); 1547 if (err) 1548 mlx4_err(bond->dev, "Fail to unbond device\n"); 1549 } 1550 put_device(&bond->dev->persist->pdev->dev); 1551 kfree(bond); 1552 } 1553 1554 int mlx4_queue_bond_work(struct mlx4_dev *dev, int is_bonded, u8 v2p_p1, 1555 u8 v2p_p2) 1556 { 1557 struct mlx4_bond *bond; 1558 1559 bond = kzalloc(sizeof(*bond), GFP_ATOMIC); 1560 if (!bond) 1561 return -ENOMEM; 1562 1563 INIT_WORK(&bond->work, mlx4_bond_work); 1564 get_device(&dev->persist->pdev->dev); 1565 bond->dev = dev; 1566 bond->is_bonded = is_bonded; 1567 bond->port_map.port1 = v2p_p1; 1568 bond->port_map.port2 = v2p_p2; 1569 queue_work(mlx4_wq, &bond->work); 1570 return 0; 1571 } 1572 EXPORT_SYMBOL(mlx4_queue_bond_work); 1573 1574 static int mlx4_load_fw(struct mlx4_dev *dev) 1575 { 1576 struct mlx4_priv *priv = mlx4_priv(dev); 1577 int err; 1578 1579 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages, 1580 GFP_HIGHUSER | __GFP_NOWARN, 0); 1581 if (!priv->fw.fw_icm) { 1582 mlx4_err(dev, "Couldn't allocate FW area, aborting\n"); 1583 return -ENOMEM; 1584 } 1585 1586 err = mlx4_MAP_FA(dev, priv->fw.fw_icm); 1587 if (err) { 1588 mlx4_err(dev, "MAP_FA command failed, aborting\n"); 1589 goto err_free; 1590 } 1591 1592 err = mlx4_RUN_FW(dev); 1593 if (err) { 1594 mlx4_err(dev, "RUN_FW command failed, aborting\n"); 1595 goto err_unmap_fa; 1596 } 1597 1598 return 0; 1599 1600 err_unmap_fa: 1601 mlx4_UNMAP_FA(dev); 1602 1603 err_free: 1604 mlx4_free_icm(dev, priv->fw.fw_icm, 0); 1605 return err; 1606 } 1607 1608 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base, 1609 int cmpt_entry_sz) 1610 { 1611 struct mlx4_priv *priv = mlx4_priv(dev); 1612 int err; 1613 int num_eqs; 1614 1615 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table, 1616 cmpt_base + 1617 ((u64) (MLX4_CMPT_TYPE_QP * 1618 cmpt_entry_sz) << MLX4_CMPT_SHIFT), 1619 cmpt_entry_sz, dev->caps.num_qps, 1620 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 1621 0, 0); 1622 if (err) 1623 goto err; 1624 1625 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table, 1626 cmpt_base + 1627 ((u64) (MLX4_CMPT_TYPE_SRQ * 1628 cmpt_entry_sz) << MLX4_CMPT_SHIFT), 1629 cmpt_entry_sz, dev->caps.num_srqs, 1630 dev->caps.reserved_srqs, 0, 0); 1631 if (err) 1632 goto err_qp; 1633 1634 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table, 1635 cmpt_base + 1636 ((u64) (MLX4_CMPT_TYPE_CQ * 1637 cmpt_entry_sz) << MLX4_CMPT_SHIFT), 1638 cmpt_entry_sz, dev->caps.num_cqs, 1639 dev->caps.reserved_cqs, 0, 0); 1640 if (err) 1641 goto err_srq; 1642 1643 num_eqs = dev->phys_caps.num_phys_eqs; 1644 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table, 1645 cmpt_base + 1646 ((u64) (MLX4_CMPT_TYPE_EQ * 1647 cmpt_entry_sz) << MLX4_CMPT_SHIFT), 1648 cmpt_entry_sz, num_eqs, num_eqs, 0, 0); 1649 if (err) 1650 goto err_cq; 1651 1652 return 0; 1653 1654 err_cq: 1655 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table); 1656 1657 err_srq: 1658 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table); 1659 1660 err_qp: 1661 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table); 1662 1663 err: 1664 return err; 1665 } 1666 1667 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap, 1668 struct mlx4_init_hca_param *init_hca, u64 icm_size) 1669 { 1670 struct mlx4_priv *priv = mlx4_priv(dev); 1671 u64 aux_pages; 1672 int num_eqs; 1673 int err; 1674 1675 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages); 1676 if (err) { 1677 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting\n"); 1678 return err; 1679 } 1680 1681 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory\n", 1682 (unsigned long long) icm_size >> 10, 1683 (unsigned long long) aux_pages << 2); 1684 1685 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages, 1686 GFP_HIGHUSER | __GFP_NOWARN, 0); 1687 if (!priv->fw.aux_icm) { 1688 mlx4_err(dev, "Couldn't allocate aux memory, aborting\n"); 1689 return -ENOMEM; 1690 } 1691 1692 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm); 1693 if (err) { 1694 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting\n"); 1695 goto err_free_aux; 1696 } 1697 1698 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz); 1699 if (err) { 1700 mlx4_err(dev, "Failed to map cMPT context memory, aborting\n"); 1701 goto err_unmap_aux; 1702 } 1703 1704 1705 num_eqs = dev->phys_caps.num_phys_eqs; 1706 err = mlx4_init_icm_table(dev, &priv->eq_table.table, 1707 init_hca->eqc_base, dev_cap->eqc_entry_sz, 1708 num_eqs, num_eqs, 0, 0); 1709 if (err) { 1710 mlx4_err(dev, "Failed to map EQ context memory, aborting\n"); 1711 goto err_unmap_cmpt; 1712 } 1713 1714 /* 1715 * Reserved MTT entries must be aligned up to a cacheline 1716 * boundary, since the FW will write to them, while the driver 1717 * writes to all other MTT entries. (The variable 1718 * dev->caps.mtt_entry_sz below is really the MTT segment 1719 * size, not the raw entry size) 1720 */ 1721 dev->caps.reserved_mtts = 1722 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz, 1723 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz; 1724 1725 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table, 1726 init_hca->mtt_base, 1727 dev->caps.mtt_entry_sz, 1728 dev->caps.num_mtts, 1729 dev->caps.reserved_mtts, 1, 0); 1730 if (err) { 1731 mlx4_err(dev, "Failed to map MTT context memory, aborting\n"); 1732 goto err_unmap_eq; 1733 } 1734 1735 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table, 1736 init_hca->dmpt_base, 1737 dev_cap->dmpt_entry_sz, 1738 dev->caps.num_mpts, 1739 dev->caps.reserved_mrws, 1, 1); 1740 if (err) { 1741 mlx4_err(dev, "Failed to map dMPT context memory, aborting\n"); 1742 goto err_unmap_mtt; 1743 } 1744 1745 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table, 1746 init_hca->qpc_base, 1747 dev_cap->qpc_entry_sz, 1748 dev->caps.num_qps, 1749 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 1750 0, 0); 1751 if (err) { 1752 mlx4_err(dev, "Failed to map QP context memory, aborting\n"); 1753 goto err_unmap_dmpt; 1754 } 1755 1756 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table, 1757 init_hca->auxc_base, 1758 dev_cap->aux_entry_sz, 1759 dev->caps.num_qps, 1760 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 1761 0, 0); 1762 if (err) { 1763 mlx4_err(dev, "Failed to map AUXC context memory, aborting\n"); 1764 goto err_unmap_qp; 1765 } 1766 1767 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table, 1768 init_hca->altc_base, 1769 dev_cap->altc_entry_sz, 1770 dev->caps.num_qps, 1771 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 1772 0, 0); 1773 if (err) { 1774 mlx4_err(dev, "Failed to map ALTC context memory, aborting\n"); 1775 goto err_unmap_auxc; 1776 } 1777 1778 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table, 1779 init_hca->rdmarc_base, 1780 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift, 1781 dev->caps.num_qps, 1782 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 1783 0, 0); 1784 if (err) { 1785 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n"); 1786 goto err_unmap_altc; 1787 } 1788 1789 err = mlx4_init_icm_table(dev, &priv->cq_table.table, 1790 init_hca->cqc_base, 1791 dev_cap->cqc_entry_sz, 1792 dev->caps.num_cqs, 1793 dev->caps.reserved_cqs, 0, 0); 1794 if (err) { 1795 mlx4_err(dev, "Failed to map CQ context memory, aborting\n"); 1796 goto err_unmap_rdmarc; 1797 } 1798 1799 err = mlx4_init_icm_table(dev, &priv->srq_table.table, 1800 init_hca->srqc_base, 1801 dev_cap->srq_entry_sz, 1802 dev->caps.num_srqs, 1803 dev->caps.reserved_srqs, 0, 0); 1804 if (err) { 1805 mlx4_err(dev, "Failed to map SRQ context memory, aborting\n"); 1806 goto err_unmap_cq; 1807 } 1808 1809 /* 1810 * For flow steering device managed mode it is required to use 1811 * mlx4_init_icm_table. For B0 steering mode it's not strictly 1812 * required, but for simplicity just map the whole multicast 1813 * group table now. The table isn't very big and it's a lot 1814 * easier than trying to track ref counts. 1815 */ 1816 err = mlx4_init_icm_table(dev, &priv->mcg_table.table, 1817 init_hca->mc_base, 1818 mlx4_get_mgm_entry_size(dev), 1819 dev->caps.num_mgms + dev->caps.num_amgms, 1820 dev->caps.num_mgms + dev->caps.num_amgms, 1821 0, 0); 1822 if (err) { 1823 mlx4_err(dev, "Failed to map MCG context memory, aborting\n"); 1824 goto err_unmap_srq; 1825 } 1826 1827 return 0; 1828 1829 err_unmap_srq: 1830 mlx4_cleanup_icm_table(dev, &priv->srq_table.table); 1831 1832 err_unmap_cq: 1833 mlx4_cleanup_icm_table(dev, &priv->cq_table.table); 1834 1835 err_unmap_rdmarc: 1836 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table); 1837 1838 err_unmap_altc: 1839 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table); 1840 1841 err_unmap_auxc: 1842 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table); 1843 1844 err_unmap_qp: 1845 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table); 1846 1847 err_unmap_dmpt: 1848 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table); 1849 1850 err_unmap_mtt: 1851 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table); 1852 1853 err_unmap_eq: 1854 mlx4_cleanup_icm_table(dev, &priv->eq_table.table); 1855 1856 err_unmap_cmpt: 1857 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table); 1858 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table); 1859 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table); 1860 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table); 1861 1862 err_unmap_aux: 1863 mlx4_UNMAP_ICM_AUX(dev); 1864 1865 err_free_aux: 1866 mlx4_free_icm(dev, priv->fw.aux_icm, 0); 1867 1868 return err; 1869 } 1870 1871 static void mlx4_free_icms(struct mlx4_dev *dev) 1872 { 1873 struct mlx4_priv *priv = mlx4_priv(dev); 1874 1875 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table); 1876 mlx4_cleanup_icm_table(dev, &priv->srq_table.table); 1877 mlx4_cleanup_icm_table(dev, &priv->cq_table.table); 1878 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table); 1879 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table); 1880 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table); 1881 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table); 1882 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table); 1883 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table); 1884 mlx4_cleanup_icm_table(dev, &priv->eq_table.table); 1885 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table); 1886 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table); 1887 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table); 1888 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table); 1889 1890 mlx4_UNMAP_ICM_AUX(dev); 1891 mlx4_free_icm(dev, priv->fw.aux_icm, 0); 1892 } 1893 1894 static void mlx4_slave_exit(struct mlx4_dev *dev) 1895 { 1896 struct mlx4_priv *priv = mlx4_priv(dev); 1897 1898 mutex_lock(&priv->cmd.slave_cmd_mutex); 1899 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP, 1900 MLX4_COMM_TIME)) 1901 mlx4_warn(dev, "Failed to close slave function\n"); 1902 mutex_unlock(&priv->cmd.slave_cmd_mutex); 1903 } 1904 1905 static int map_bf_area(struct mlx4_dev *dev) 1906 { 1907 struct mlx4_priv *priv = mlx4_priv(dev); 1908 resource_size_t bf_start; 1909 resource_size_t bf_len; 1910 int err = 0; 1911 1912 if (!dev->caps.bf_reg_size) 1913 return -ENXIO; 1914 1915 bf_start = pci_resource_start(dev->persist->pdev, 2) + 1916 (dev->caps.num_uars << PAGE_SHIFT); 1917 bf_len = pci_resource_len(dev->persist->pdev, 2) - 1918 (dev->caps.num_uars << PAGE_SHIFT); 1919 priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len); 1920 if (!priv->bf_mapping) 1921 err = -ENOMEM; 1922 1923 return err; 1924 } 1925 1926 static void unmap_bf_area(struct mlx4_dev *dev) 1927 { 1928 if (mlx4_priv(dev)->bf_mapping) 1929 io_mapping_free(mlx4_priv(dev)->bf_mapping); 1930 } 1931 1932 u64 mlx4_read_clock(struct mlx4_dev *dev) 1933 { 1934 u32 clockhi, clocklo, clockhi1; 1935 u64 cycles; 1936 int i; 1937 struct mlx4_priv *priv = mlx4_priv(dev); 1938 1939 for (i = 0; i < 10; i++) { 1940 clockhi = swab32(readl(priv->clock_mapping)); 1941 clocklo = swab32(readl(priv->clock_mapping + 4)); 1942 clockhi1 = swab32(readl(priv->clock_mapping)); 1943 if (clockhi == clockhi1) 1944 break; 1945 } 1946 1947 cycles = (u64) clockhi << 32 | (u64) clocklo; 1948 1949 return cycles; 1950 } 1951 EXPORT_SYMBOL_GPL(mlx4_read_clock); 1952 1953 1954 static int map_internal_clock(struct mlx4_dev *dev) 1955 { 1956 struct mlx4_priv *priv = mlx4_priv(dev); 1957 1958 priv->clock_mapping = 1959 ioremap(pci_resource_start(dev->persist->pdev, 1960 priv->fw.clock_bar) + 1961 priv->fw.clock_offset, MLX4_CLOCK_SIZE); 1962 1963 if (!priv->clock_mapping) 1964 return -ENOMEM; 1965 1966 return 0; 1967 } 1968 1969 int mlx4_get_internal_clock_params(struct mlx4_dev *dev, 1970 struct mlx4_clock_params *params) 1971 { 1972 struct mlx4_priv *priv = mlx4_priv(dev); 1973 1974 if (mlx4_is_slave(dev)) 1975 return -EOPNOTSUPP; 1976 1977 if (!dev->caps.map_clock_to_user) { 1978 mlx4_dbg(dev, "Map clock to user is not supported.\n"); 1979 return -EOPNOTSUPP; 1980 } 1981 1982 if (!params) 1983 return -EINVAL; 1984 1985 params->bar = priv->fw.clock_bar; 1986 params->offset = priv->fw.clock_offset; 1987 params->size = MLX4_CLOCK_SIZE; 1988 1989 return 0; 1990 } 1991 EXPORT_SYMBOL_GPL(mlx4_get_internal_clock_params); 1992 1993 static void unmap_internal_clock(struct mlx4_dev *dev) 1994 { 1995 struct mlx4_priv *priv = mlx4_priv(dev); 1996 1997 if (priv->clock_mapping) 1998 iounmap(priv->clock_mapping); 1999 } 2000 2001 static void mlx4_close_hca(struct mlx4_dev *dev) 2002 { 2003 unmap_internal_clock(dev); 2004 unmap_bf_area(dev); 2005 if (mlx4_is_slave(dev)) 2006 mlx4_slave_exit(dev); 2007 else { 2008 mlx4_CLOSE_HCA(dev, 0); 2009 mlx4_free_icms(dev); 2010 } 2011 } 2012 2013 static void mlx4_close_fw(struct mlx4_dev *dev) 2014 { 2015 if (!mlx4_is_slave(dev)) { 2016 mlx4_UNMAP_FA(dev); 2017 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0); 2018 } 2019 } 2020 2021 static int mlx4_comm_check_offline(struct mlx4_dev *dev) 2022 { 2023 #define COMM_CHAN_OFFLINE_OFFSET 0x09 2024 2025 u32 comm_flags; 2026 u32 offline_bit; 2027 unsigned long end; 2028 struct mlx4_priv *priv = mlx4_priv(dev); 2029 2030 end = msecs_to_jiffies(MLX4_COMM_OFFLINE_TIME_OUT) + jiffies; 2031 while (time_before(jiffies, end)) { 2032 comm_flags = swab32(readl((__iomem char *)priv->mfunc.comm + 2033 MLX4_COMM_CHAN_FLAGS)); 2034 offline_bit = (comm_flags & 2035 (u32)(1 << COMM_CHAN_OFFLINE_OFFSET)); 2036 if (!offline_bit) 2037 return 0; 2038 2039 /* If device removal has been requested, 2040 * do not continue retrying. 2041 */ 2042 if (dev->persist->interface_state & 2043 MLX4_INTERFACE_STATE_NOWAIT) 2044 break; 2045 2046 /* There are cases as part of AER/Reset flow that PF needs 2047 * around 100 msec to load. We therefore sleep for 100 msec 2048 * to allow other tasks to make use of that CPU during this 2049 * time interval. 2050 */ 2051 msleep(100); 2052 } 2053 mlx4_err(dev, "Communication channel is offline.\n"); 2054 return -EIO; 2055 } 2056 2057 static void mlx4_reset_vf_support(struct mlx4_dev *dev) 2058 { 2059 #define COMM_CHAN_RST_OFFSET 0x1e 2060 2061 struct mlx4_priv *priv = mlx4_priv(dev); 2062 u32 comm_rst; 2063 u32 comm_caps; 2064 2065 comm_caps = swab32(readl((__iomem char *)priv->mfunc.comm + 2066 MLX4_COMM_CHAN_CAPS)); 2067 comm_rst = (comm_caps & (u32)(1 << COMM_CHAN_RST_OFFSET)); 2068 2069 if (comm_rst) 2070 dev->caps.vf_caps |= MLX4_VF_CAP_FLAG_RESET; 2071 } 2072 2073 static int mlx4_init_slave(struct mlx4_dev *dev) 2074 { 2075 struct mlx4_priv *priv = mlx4_priv(dev); 2076 u64 dma = (u64) priv->mfunc.vhcr_dma; 2077 int ret_from_reset = 0; 2078 u32 slave_read; 2079 u32 cmd_channel_ver; 2080 2081 if (atomic_read(&pf_loading)) { 2082 mlx4_warn(dev, "PF is not ready - Deferring probe\n"); 2083 return -EPROBE_DEFER; 2084 } 2085 2086 mutex_lock(&priv->cmd.slave_cmd_mutex); 2087 priv->cmd.max_cmds = 1; 2088 if (mlx4_comm_check_offline(dev)) { 2089 mlx4_err(dev, "PF is not responsive, skipping initialization\n"); 2090 goto err_offline; 2091 } 2092 2093 mlx4_reset_vf_support(dev); 2094 mlx4_warn(dev, "Sending reset\n"); 2095 ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, 2096 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME); 2097 /* if we are in the middle of flr the slave will try 2098 * NUM_OF_RESET_RETRIES times before leaving.*/ 2099 if (ret_from_reset) { 2100 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) { 2101 mlx4_warn(dev, "slave is currently in the middle of FLR - Deferring probe\n"); 2102 mutex_unlock(&priv->cmd.slave_cmd_mutex); 2103 return -EPROBE_DEFER; 2104 } else 2105 goto err; 2106 } 2107 2108 /* check the driver version - the slave I/F revision 2109 * must match the master's */ 2110 slave_read = swab32(readl(&priv->mfunc.comm->slave_read)); 2111 cmd_channel_ver = mlx4_comm_get_version(); 2112 2113 if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) != 2114 MLX4_COMM_GET_IF_REV(slave_read)) { 2115 mlx4_err(dev, "slave driver version is not supported by the master\n"); 2116 goto err; 2117 } 2118 2119 mlx4_warn(dev, "Sending vhcr0\n"); 2120 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48, 2121 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME)) 2122 goto err; 2123 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32, 2124 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME)) 2125 goto err; 2126 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16, 2127 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME)) 2128 goto err; 2129 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma, 2130 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME)) 2131 goto err; 2132 2133 mutex_unlock(&priv->cmd.slave_cmd_mutex); 2134 return 0; 2135 2136 err: 2137 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP, 0); 2138 err_offline: 2139 mutex_unlock(&priv->cmd.slave_cmd_mutex); 2140 return -EIO; 2141 } 2142 2143 static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev) 2144 { 2145 int i; 2146 2147 for (i = 1; i <= dev->caps.num_ports; i++) { 2148 if (dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH) 2149 dev->caps.gid_table_len[i] = 2150 mlx4_get_slave_num_gids(dev, 0, i); 2151 else 2152 dev->caps.gid_table_len[i] = 1; 2153 dev->caps.pkey_table_len[i] = 2154 dev->phys_caps.pkey_phys_table_len[i] - 1; 2155 } 2156 } 2157 2158 static int choose_log_fs_mgm_entry_size(int qp_per_entry) 2159 { 2160 int i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; 2161 2162 for (i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE; 2163 i++) { 2164 if (qp_per_entry <= 4 * ((1 << i) / 16 - 2)) 2165 break; 2166 } 2167 2168 return (i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE) ? i : -1; 2169 } 2170 2171 static const char *dmfs_high_rate_steering_mode_str(int dmfs_high_steer_mode) 2172 { 2173 switch (dmfs_high_steer_mode) { 2174 case MLX4_STEERING_DMFS_A0_DEFAULT: 2175 return "default performance"; 2176 2177 case MLX4_STEERING_DMFS_A0_DYNAMIC: 2178 return "dynamic hybrid mode"; 2179 2180 case MLX4_STEERING_DMFS_A0_STATIC: 2181 return "performance optimized for limited rule configuration (static)"; 2182 2183 case MLX4_STEERING_DMFS_A0_DISABLE: 2184 return "disabled performance optimized steering"; 2185 2186 case MLX4_STEERING_DMFS_A0_NOT_SUPPORTED: 2187 return "performance optimized steering not supported"; 2188 2189 default: 2190 return "Unrecognized mode"; 2191 } 2192 } 2193 2194 #define MLX4_DMFS_A0_STEERING (1UL << 2) 2195 2196 static void choose_steering_mode(struct mlx4_dev *dev, 2197 struct mlx4_dev_cap *dev_cap) 2198 { 2199 if (mlx4_log_num_mgm_entry_size <= 0) { 2200 if ((-mlx4_log_num_mgm_entry_size) & MLX4_DMFS_A0_STEERING) { 2201 if (dev->caps.dmfs_high_steer_mode == 2202 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) 2203 mlx4_err(dev, "DMFS high rate mode not supported\n"); 2204 else 2205 dev->caps.dmfs_high_steer_mode = 2206 MLX4_STEERING_DMFS_A0_STATIC; 2207 } 2208 } 2209 2210 if (mlx4_log_num_mgm_entry_size <= 0 && 2211 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN && 2212 (!mlx4_is_mfunc(dev) || 2213 (dev_cap->fs_max_num_qp_per_entry >= 2214 (dev->persist->num_vfs + 1))) && 2215 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry) >= 2216 MLX4_MIN_MGM_LOG_ENTRY_SIZE) { 2217 dev->oper_log_mgm_entry_size = 2218 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry); 2219 dev->caps.steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED; 2220 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry; 2221 dev->caps.fs_log_max_ucast_qp_range_size = 2222 dev_cap->fs_log_max_ucast_qp_range_size; 2223 } else { 2224 if (dev->caps.dmfs_high_steer_mode != 2225 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) 2226 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DISABLE; 2227 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER && 2228 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) 2229 dev->caps.steering_mode = MLX4_STEERING_MODE_B0; 2230 else { 2231 dev->caps.steering_mode = MLX4_STEERING_MODE_A0; 2232 2233 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER || 2234 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) 2235 mlx4_warn(dev, "Must have both UC_STEER and MC_STEER flags set to use B0 steering - falling back to A0 steering mode\n"); 2236 } 2237 dev->oper_log_mgm_entry_size = 2238 mlx4_log_num_mgm_entry_size > 0 ? 2239 mlx4_log_num_mgm_entry_size : 2240 MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE; 2241 dev->caps.num_qp_per_mgm = mlx4_get_qp_per_mgm(dev); 2242 } 2243 mlx4_dbg(dev, "Steering mode is: %s, oper_log_mgm_entry_size = %d, modparam log_num_mgm_entry_size = %d\n", 2244 mlx4_steering_mode_str(dev->caps.steering_mode), 2245 dev->oper_log_mgm_entry_size, 2246 mlx4_log_num_mgm_entry_size); 2247 } 2248 2249 static void choose_tunnel_offload_mode(struct mlx4_dev *dev, 2250 struct mlx4_dev_cap *dev_cap) 2251 { 2252 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED && 2253 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS) 2254 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_VXLAN; 2255 else 2256 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_NONE; 2257 2258 mlx4_dbg(dev, "Tunneling offload mode is: %s\n", (dev->caps.tunnel_offload_mode 2259 == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) ? "vxlan" : "none"); 2260 } 2261 2262 static int mlx4_validate_optimized_steering(struct mlx4_dev *dev) 2263 { 2264 int i; 2265 struct mlx4_port_cap port_cap; 2266 2267 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) 2268 return -EINVAL; 2269 2270 for (i = 1; i <= dev->caps.num_ports; i++) { 2271 if (mlx4_dev_port(dev, i, &port_cap)) { 2272 mlx4_err(dev, 2273 "QUERY_DEV_CAP command failed, can't verify DMFS high rate steering.\n"); 2274 } else if ((dev->caps.dmfs_high_steer_mode != 2275 MLX4_STEERING_DMFS_A0_DEFAULT) && 2276 (port_cap.dmfs_optimized_state == 2277 !!(dev->caps.dmfs_high_steer_mode == 2278 MLX4_STEERING_DMFS_A0_DISABLE))) { 2279 mlx4_err(dev, 2280 "DMFS high rate steer mode differ, driver requested %s but %s in FW.\n", 2281 dmfs_high_rate_steering_mode_str( 2282 dev->caps.dmfs_high_steer_mode), 2283 (port_cap.dmfs_optimized_state ? 2284 "enabled" : "disabled")); 2285 } 2286 } 2287 2288 return 0; 2289 } 2290 2291 static int mlx4_init_fw(struct mlx4_dev *dev) 2292 { 2293 struct mlx4_mod_stat_cfg mlx4_cfg; 2294 int err = 0; 2295 2296 if (!mlx4_is_slave(dev)) { 2297 err = mlx4_QUERY_FW(dev); 2298 if (err) { 2299 if (err == -EACCES) 2300 mlx4_info(dev, "non-primary physical function, skipping\n"); 2301 else 2302 mlx4_err(dev, "QUERY_FW command failed, aborting\n"); 2303 return err; 2304 } 2305 2306 err = mlx4_load_fw(dev); 2307 if (err) { 2308 mlx4_err(dev, "Failed to start FW, aborting\n"); 2309 return err; 2310 } 2311 2312 mlx4_cfg.log_pg_sz_m = 1; 2313 mlx4_cfg.log_pg_sz = 0; 2314 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg); 2315 if (err) 2316 mlx4_warn(dev, "Failed to override log_pg_sz parameter\n"); 2317 } 2318 2319 return err; 2320 } 2321 2322 static int mlx4_init_hca(struct mlx4_dev *dev) 2323 { 2324 struct mlx4_priv *priv = mlx4_priv(dev); 2325 struct mlx4_init_hca_param *init_hca = NULL; 2326 struct mlx4_dev_cap *dev_cap = NULL; 2327 struct mlx4_adapter adapter; 2328 struct mlx4_profile profile; 2329 u64 icm_size; 2330 struct mlx4_config_dev_params params; 2331 int err; 2332 2333 if (!mlx4_is_slave(dev)) { 2334 dev_cap = kzalloc(sizeof(*dev_cap), GFP_KERNEL); 2335 init_hca = kzalloc(sizeof(*init_hca), GFP_KERNEL); 2336 2337 if (!dev_cap || !init_hca) { 2338 err = -ENOMEM; 2339 goto out_free; 2340 } 2341 2342 err = mlx4_dev_cap(dev, dev_cap); 2343 if (err) { 2344 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n"); 2345 goto out_free; 2346 } 2347 2348 choose_steering_mode(dev, dev_cap); 2349 choose_tunnel_offload_mode(dev, dev_cap); 2350 2351 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC && 2352 mlx4_is_master(dev)) 2353 dev->caps.function_caps |= MLX4_FUNC_CAP_DMFS_A0_STATIC; 2354 2355 err = mlx4_get_phys_port_id(dev); 2356 if (err) 2357 mlx4_err(dev, "Fail to get physical port id\n"); 2358 2359 if (mlx4_is_master(dev)) 2360 mlx4_parav_master_pf_caps(dev); 2361 2362 if (mlx4_low_memory_profile()) { 2363 mlx4_info(dev, "Running from within kdump kernel. Using low memory profile\n"); 2364 profile = low_mem_profile; 2365 } else { 2366 profile = default_profile; 2367 } 2368 if (dev->caps.steering_mode == 2369 MLX4_STEERING_MODE_DEVICE_MANAGED) 2370 profile.num_mcg = MLX4_FS_NUM_MCG; 2371 2372 icm_size = mlx4_make_profile(dev, &profile, dev_cap, 2373 init_hca); 2374 if ((long long) icm_size < 0) { 2375 err = icm_size; 2376 goto out_free; 2377 } 2378 2379 if (enable_4k_uar || !dev->persist->num_vfs) { 2380 init_hca->log_uar_sz = ilog2(dev->caps.num_uars) + 2381 PAGE_SHIFT - DEFAULT_UAR_PAGE_SHIFT; 2382 init_hca->uar_page_sz = DEFAULT_UAR_PAGE_SHIFT - 12; 2383 } else { 2384 init_hca->log_uar_sz = ilog2(dev->caps.num_uars); 2385 init_hca->uar_page_sz = PAGE_SHIFT - 12; 2386 } 2387 2388 init_hca->mw_enabled = 0; 2389 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 2390 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) 2391 init_hca->mw_enabled = INIT_HCA_TPT_MW_ENABLE; 2392 2393 err = mlx4_init_icm(dev, dev_cap, init_hca, icm_size); 2394 if (err) 2395 goto out_free; 2396 2397 err = mlx4_INIT_HCA(dev, init_hca); 2398 if (err) { 2399 mlx4_err(dev, "INIT_HCA command failed, aborting\n"); 2400 goto err_free_icm; 2401 } 2402 2403 if (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) { 2404 err = mlx4_query_func(dev, dev_cap); 2405 if (err < 0) { 2406 mlx4_err(dev, "QUERY_FUNC command failed, aborting.\n"); 2407 goto err_close; 2408 } else if (err & MLX4_QUERY_FUNC_NUM_SYS_EQS) { 2409 dev->caps.num_eqs = dev_cap->max_eqs; 2410 dev->caps.reserved_eqs = dev_cap->reserved_eqs; 2411 dev->caps.reserved_uars = dev_cap->reserved_uars; 2412 } 2413 } 2414 2415 /* 2416 * If TS is supported by FW 2417 * read HCA frequency by QUERY_HCA command 2418 */ 2419 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) { 2420 err = mlx4_QUERY_HCA(dev, init_hca); 2421 if (err) { 2422 mlx4_err(dev, "QUERY_HCA command failed, disable timestamp\n"); 2423 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS; 2424 } else { 2425 dev->caps.hca_core_clock = 2426 init_hca->hca_core_clock; 2427 } 2428 2429 /* In case we got HCA frequency 0 - disable timestamping 2430 * to avoid dividing by zero 2431 */ 2432 if (!dev->caps.hca_core_clock) { 2433 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS; 2434 mlx4_err(dev, 2435 "HCA frequency is 0 - timestamping is not supported\n"); 2436 } else if (map_internal_clock(dev)) { 2437 /* 2438 * Map internal clock, 2439 * in case of failure disable timestamping 2440 */ 2441 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS; 2442 mlx4_err(dev, "Failed to map internal clock. Timestamping is not supported\n"); 2443 } 2444 } 2445 2446 if (dev->caps.dmfs_high_steer_mode != 2447 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) { 2448 if (mlx4_validate_optimized_steering(dev)) 2449 mlx4_warn(dev, "Optimized steering validation failed\n"); 2450 2451 if (dev->caps.dmfs_high_steer_mode == 2452 MLX4_STEERING_DMFS_A0_DISABLE) { 2453 dev->caps.dmfs_high_rate_qpn_base = 2454 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW]; 2455 dev->caps.dmfs_high_rate_qpn_range = 2456 MLX4_A0_STEERING_TABLE_SIZE; 2457 } 2458 2459 mlx4_info(dev, "DMFS high rate steer mode is: %s\n", 2460 dmfs_high_rate_steering_mode_str( 2461 dev->caps.dmfs_high_steer_mode)); 2462 } 2463 } else { 2464 err = mlx4_init_slave(dev); 2465 if (err) { 2466 if (err != -EPROBE_DEFER) 2467 mlx4_err(dev, "Failed to initialize slave\n"); 2468 return err; 2469 } 2470 2471 err = mlx4_slave_cap(dev); 2472 if (err) { 2473 mlx4_err(dev, "Failed to obtain slave caps\n"); 2474 goto err_close; 2475 } 2476 } 2477 2478 if (map_bf_area(dev)) 2479 mlx4_dbg(dev, "Failed to map blue flame area\n"); 2480 2481 /*Only the master set the ports, all the rest got it from it.*/ 2482 if (!mlx4_is_slave(dev)) 2483 mlx4_set_port_mask(dev); 2484 2485 err = mlx4_QUERY_ADAPTER(dev, &adapter); 2486 if (err) { 2487 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting\n"); 2488 goto unmap_bf; 2489 } 2490 2491 /* Query CONFIG_DEV parameters */ 2492 err = mlx4_config_dev_retrieval(dev, ¶ms); 2493 if (err && err != -EOPNOTSUPP) { 2494 mlx4_err(dev, "Failed to query CONFIG_DEV parameters\n"); 2495 } else if (!err) { 2496 dev->caps.rx_checksum_flags_port[1] = params.rx_csum_flags_port_1; 2497 dev->caps.rx_checksum_flags_port[2] = params.rx_csum_flags_port_2; 2498 } 2499 priv->eq_table.inta_pin = adapter.inta_pin; 2500 memcpy(dev->board_id, adapter.board_id, sizeof(dev->board_id)); 2501 2502 err = 0; 2503 goto out_free; 2504 2505 unmap_bf: 2506 unmap_internal_clock(dev); 2507 unmap_bf_area(dev); 2508 2509 if (mlx4_is_slave(dev)) 2510 mlx4_slave_destroy_special_qp_cap(dev); 2511 2512 err_close: 2513 if (mlx4_is_slave(dev)) 2514 mlx4_slave_exit(dev); 2515 else 2516 mlx4_CLOSE_HCA(dev, 0); 2517 2518 err_free_icm: 2519 if (!mlx4_is_slave(dev)) 2520 mlx4_free_icms(dev); 2521 2522 out_free: 2523 kfree(dev_cap); 2524 kfree(init_hca); 2525 2526 return err; 2527 } 2528 2529 static int mlx4_init_counters_table(struct mlx4_dev *dev) 2530 { 2531 struct mlx4_priv *priv = mlx4_priv(dev); 2532 int nent_pow2; 2533 2534 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS)) 2535 return -ENOENT; 2536 2537 if (!dev->caps.max_counters) 2538 return -ENOSPC; 2539 2540 nent_pow2 = roundup_pow_of_two(dev->caps.max_counters); 2541 /* reserve last counter index for sink counter */ 2542 return mlx4_bitmap_init(&priv->counters_bitmap, nent_pow2, 2543 nent_pow2 - 1, 0, 2544 nent_pow2 - dev->caps.max_counters + 1); 2545 } 2546 2547 static void mlx4_cleanup_counters_table(struct mlx4_dev *dev) 2548 { 2549 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS)) 2550 return; 2551 2552 if (!dev->caps.max_counters) 2553 return; 2554 2555 mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap); 2556 } 2557 2558 static void mlx4_cleanup_default_counters(struct mlx4_dev *dev) 2559 { 2560 struct mlx4_priv *priv = mlx4_priv(dev); 2561 int port; 2562 2563 for (port = 0; port < dev->caps.num_ports; port++) 2564 if (priv->def_counter[port] != -1) 2565 mlx4_counter_free(dev, priv->def_counter[port]); 2566 } 2567 2568 static int mlx4_allocate_default_counters(struct mlx4_dev *dev) 2569 { 2570 struct mlx4_priv *priv = mlx4_priv(dev); 2571 int port, err = 0; 2572 u32 idx; 2573 2574 for (port = 0; port < dev->caps.num_ports; port++) 2575 priv->def_counter[port] = -1; 2576 2577 for (port = 0; port < dev->caps.num_ports; port++) { 2578 err = mlx4_counter_alloc(dev, &idx, MLX4_RES_USAGE_DRIVER); 2579 2580 if (!err || err == -ENOSPC) { 2581 priv->def_counter[port] = idx; 2582 err = 0; 2583 } else if (err == -ENOENT) { 2584 err = 0; 2585 continue; 2586 } else if (mlx4_is_slave(dev) && err == -EINVAL) { 2587 priv->def_counter[port] = MLX4_SINK_COUNTER_INDEX(dev); 2588 mlx4_warn(dev, "can't allocate counter from old PF driver, using index %d\n", 2589 MLX4_SINK_COUNTER_INDEX(dev)); 2590 err = 0; 2591 } else { 2592 mlx4_err(dev, "%s: failed to allocate default counter port %d err %d\n", 2593 __func__, port + 1, err); 2594 mlx4_cleanup_default_counters(dev); 2595 return err; 2596 } 2597 2598 mlx4_dbg(dev, "%s: default counter index %d for port %d\n", 2599 __func__, priv->def_counter[port], port + 1); 2600 } 2601 2602 return err; 2603 } 2604 2605 int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx) 2606 { 2607 struct mlx4_priv *priv = mlx4_priv(dev); 2608 2609 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS)) 2610 return -ENOENT; 2611 2612 *idx = mlx4_bitmap_alloc(&priv->counters_bitmap); 2613 if (*idx == -1) { 2614 *idx = MLX4_SINK_COUNTER_INDEX(dev); 2615 return -ENOSPC; 2616 } 2617 2618 return 0; 2619 } 2620 2621 int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx, u8 usage) 2622 { 2623 u32 in_modifier = RES_COUNTER | (((u32)usage & 3) << 30); 2624 u64 out_param; 2625 int err; 2626 2627 if (mlx4_is_mfunc(dev)) { 2628 err = mlx4_cmd_imm(dev, 0, &out_param, in_modifier, 2629 RES_OP_RESERVE, MLX4_CMD_ALLOC_RES, 2630 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); 2631 if (!err) 2632 *idx = get_param_l(&out_param); 2633 if (WARN_ON(err == -ENOSPC)) 2634 err = -EINVAL; 2635 return err; 2636 } 2637 return __mlx4_counter_alloc(dev, idx); 2638 } 2639 EXPORT_SYMBOL_GPL(mlx4_counter_alloc); 2640 2641 static int __mlx4_clear_if_stat(struct mlx4_dev *dev, 2642 u8 counter_index) 2643 { 2644 struct mlx4_cmd_mailbox *if_stat_mailbox; 2645 int err; 2646 u32 if_stat_in_mod = (counter_index & 0xff) | MLX4_QUERY_IF_STAT_RESET; 2647 2648 if_stat_mailbox = mlx4_alloc_cmd_mailbox(dev); 2649 if (IS_ERR(if_stat_mailbox)) 2650 return PTR_ERR(if_stat_mailbox); 2651 2652 err = mlx4_cmd_box(dev, 0, if_stat_mailbox->dma, if_stat_in_mod, 0, 2653 MLX4_CMD_QUERY_IF_STAT, MLX4_CMD_TIME_CLASS_C, 2654 MLX4_CMD_NATIVE); 2655 2656 mlx4_free_cmd_mailbox(dev, if_stat_mailbox); 2657 return err; 2658 } 2659 2660 void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx) 2661 { 2662 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS)) 2663 return; 2664 2665 if (idx == MLX4_SINK_COUNTER_INDEX(dev)) 2666 return; 2667 2668 __mlx4_clear_if_stat(dev, idx); 2669 2670 mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx, MLX4_USE_RR); 2671 return; 2672 } 2673 2674 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx) 2675 { 2676 u64 in_param = 0; 2677 2678 if (mlx4_is_mfunc(dev)) { 2679 set_param_l(&in_param, idx); 2680 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE, 2681 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A, 2682 MLX4_CMD_WRAPPED); 2683 return; 2684 } 2685 __mlx4_counter_free(dev, idx); 2686 } 2687 EXPORT_SYMBOL_GPL(mlx4_counter_free); 2688 2689 int mlx4_get_default_counter_index(struct mlx4_dev *dev, int port) 2690 { 2691 struct mlx4_priv *priv = mlx4_priv(dev); 2692 2693 return priv->def_counter[port - 1]; 2694 } 2695 EXPORT_SYMBOL_GPL(mlx4_get_default_counter_index); 2696 2697 void mlx4_set_admin_guid(struct mlx4_dev *dev, __be64 guid, int entry, int port) 2698 { 2699 struct mlx4_priv *priv = mlx4_priv(dev); 2700 2701 priv->mfunc.master.vf_admin[entry].vport[port].guid = guid; 2702 } 2703 EXPORT_SYMBOL_GPL(mlx4_set_admin_guid); 2704 2705 __be64 mlx4_get_admin_guid(struct mlx4_dev *dev, int entry, int port) 2706 { 2707 struct mlx4_priv *priv = mlx4_priv(dev); 2708 2709 return priv->mfunc.master.vf_admin[entry].vport[port].guid; 2710 } 2711 EXPORT_SYMBOL_GPL(mlx4_get_admin_guid); 2712 2713 void mlx4_set_random_admin_guid(struct mlx4_dev *dev, int entry, int port) 2714 { 2715 struct mlx4_priv *priv = mlx4_priv(dev); 2716 __be64 guid; 2717 2718 /* hw GUID */ 2719 if (entry == 0) 2720 return; 2721 2722 get_random_bytes((char *)&guid, sizeof(guid)); 2723 guid &= ~(cpu_to_be64(1ULL << 56)); 2724 guid |= cpu_to_be64(1ULL << 57); 2725 priv->mfunc.master.vf_admin[entry].vport[port].guid = guid; 2726 } 2727 2728 static int mlx4_setup_hca(struct mlx4_dev *dev) 2729 { 2730 struct mlx4_priv *priv = mlx4_priv(dev); 2731 int err; 2732 int port; 2733 __be32 ib_port_default_caps; 2734 2735 err = mlx4_init_uar_table(dev); 2736 if (err) { 2737 mlx4_err(dev, "Failed to initialize user access region table, aborting\n"); 2738 return err; 2739 } 2740 2741 err = mlx4_uar_alloc(dev, &priv->driver_uar); 2742 if (err) { 2743 mlx4_err(dev, "Failed to allocate driver access region, aborting\n"); 2744 goto err_uar_table_free; 2745 } 2746 2747 priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE); 2748 if (!priv->kar) { 2749 mlx4_err(dev, "Couldn't map kernel access region, aborting\n"); 2750 err = -ENOMEM; 2751 goto err_uar_free; 2752 } 2753 2754 err = mlx4_init_pd_table(dev); 2755 if (err) { 2756 mlx4_err(dev, "Failed to initialize protection domain table, aborting\n"); 2757 goto err_kar_unmap; 2758 } 2759 2760 err = mlx4_init_xrcd_table(dev); 2761 if (err) { 2762 mlx4_err(dev, "Failed to initialize reliable connection domain table, aborting\n"); 2763 goto err_pd_table_free; 2764 } 2765 2766 err = mlx4_init_mr_table(dev); 2767 if (err) { 2768 mlx4_err(dev, "Failed to initialize memory region table, aborting\n"); 2769 goto err_xrcd_table_free; 2770 } 2771 2772 if (!mlx4_is_slave(dev)) { 2773 err = mlx4_init_mcg_table(dev); 2774 if (err) { 2775 mlx4_err(dev, "Failed to initialize multicast group table, aborting\n"); 2776 goto err_mr_table_free; 2777 } 2778 err = mlx4_config_mad_demux(dev); 2779 if (err) { 2780 mlx4_err(dev, "Failed in config_mad_demux, aborting\n"); 2781 goto err_mcg_table_free; 2782 } 2783 } 2784 2785 err = mlx4_init_eq_table(dev); 2786 if (err) { 2787 mlx4_err(dev, "Failed to initialize event queue table, aborting\n"); 2788 goto err_mcg_table_free; 2789 } 2790 2791 err = mlx4_cmd_use_events(dev); 2792 if (err) { 2793 mlx4_err(dev, "Failed to switch to event-driven firmware commands, aborting\n"); 2794 goto err_eq_table_free; 2795 } 2796 2797 err = mlx4_NOP(dev); 2798 if (err) { 2799 if (dev->flags & MLX4_FLAG_MSI_X) { 2800 mlx4_warn(dev, "NOP command failed to generate MSI-X interrupt IRQ %d)\n", 2801 priv->eq_table.eq[MLX4_EQ_ASYNC].irq); 2802 mlx4_warn(dev, "Trying again without MSI-X\n"); 2803 } else { 2804 mlx4_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting\n", 2805 priv->eq_table.eq[MLX4_EQ_ASYNC].irq); 2806 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n"); 2807 } 2808 2809 goto err_cmd_poll; 2810 } 2811 2812 mlx4_dbg(dev, "NOP command IRQ test passed\n"); 2813 2814 err = mlx4_init_cq_table(dev); 2815 if (err) { 2816 mlx4_err(dev, "Failed to initialize completion queue table, aborting\n"); 2817 goto err_cmd_poll; 2818 } 2819 2820 err = mlx4_init_srq_table(dev); 2821 if (err) { 2822 mlx4_err(dev, "Failed to initialize shared receive queue table, aborting\n"); 2823 goto err_cq_table_free; 2824 } 2825 2826 err = mlx4_init_qp_table(dev); 2827 if (err) { 2828 mlx4_err(dev, "Failed to initialize queue pair table, aborting\n"); 2829 goto err_srq_table_free; 2830 } 2831 2832 if (!mlx4_is_slave(dev)) { 2833 err = mlx4_init_counters_table(dev); 2834 if (err && err != -ENOENT) { 2835 mlx4_err(dev, "Failed to initialize counters table, aborting\n"); 2836 goto err_qp_table_free; 2837 } 2838 } 2839 2840 err = mlx4_allocate_default_counters(dev); 2841 if (err) { 2842 mlx4_err(dev, "Failed to allocate default counters, aborting\n"); 2843 goto err_counters_table_free; 2844 } 2845 2846 if (!mlx4_is_slave(dev)) { 2847 for (port = 1; port <= dev->caps.num_ports; port++) { 2848 ib_port_default_caps = 0; 2849 err = mlx4_get_port_ib_caps(dev, port, 2850 &ib_port_default_caps); 2851 if (err) 2852 mlx4_warn(dev, "failed to get port %d default ib capabilities (%d). Continuing with caps = 0\n", 2853 port, err); 2854 dev->caps.ib_port_def_cap[port] = ib_port_default_caps; 2855 2856 /* initialize per-slave default ib port capabilities */ 2857 if (mlx4_is_master(dev)) { 2858 int i; 2859 for (i = 0; i < dev->num_slaves; i++) { 2860 if (i == mlx4_master_func_num(dev)) 2861 continue; 2862 priv->mfunc.master.slave_state[i].ib_cap_mask[port] = 2863 ib_port_default_caps; 2864 } 2865 } 2866 2867 if (mlx4_is_mfunc(dev)) 2868 dev->caps.port_ib_mtu[port] = IB_MTU_2048; 2869 else 2870 dev->caps.port_ib_mtu[port] = IB_MTU_4096; 2871 2872 err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ? 2873 dev->caps.pkey_table_len[port] : -1); 2874 if (err) { 2875 mlx4_err(dev, "Failed to set port %d, aborting\n", 2876 port); 2877 goto err_default_countes_free; 2878 } 2879 } 2880 } 2881 2882 return 0; 2883 2884 err_default_countes_free: 2885 mlx4_cleanup_default_counters(dev); 2886 2887 err_counters_table_free: 2888 if (!mlx4_is_slave(dev)) 2889 mlx4_cleanup_counters_table(dev); 2890 2891 err_qp_table_free: 2892 mlx4_cleanup_qp_table(dev); 2893 2894 err_srq_table_free: 2895 mlx4_cleanup_srq_table(dev); 2896 2897 err_cq_table_free: 2898 mlx4_cleanup_cq_table(dev); 2899 2900 err_cmd_poll: 2901 mlx4_cmd_use_polling(dev); 2902 2903 err_eq_table_free: 2904 mlx4_cleanup_eq_table(dev); 2905 2906 err_mcg_table_free: 2907 if (!mlx4_is_slave(dev)) 2908 mlx4_cleanup_mcg_table(dev); 2909 2910 err_mr_table_free: 2911 mlx4_cleanup_mr_table(dev); 2912 2913 err_xrcd_table_free: 2914 mlx4_cleanup_xrcd_table(dev); 2915 2916 err_pd_table_free: 2917 mlx4_cleanup_pd_table(dev); 2918 2919 err_kar_unmap: 2920 iounmap(priv->kar); 2921 2922 err_uar_free: 2923 mlx4_uar_free(dev, &priv->driver_uar); 2924 2925 err_uar_table_free: 2926 mlx4_cleanup_uar_table(dev); 2927 return err; 2928 } 2929 2930 static int mlx4_init_affinity_hint(struct mlx4_dev *dev, int port, int eqn) 2931 { 2932 int requested_cpu = 0; 2933 struct mlx4_priv *priv = mlx4_priv(dev); 2934 struct mlx4_eq *eq; 2935 int off = 0; 2936 int i; 2937 2938 if (eqn > dev->caps.num_comp_vectors) 2939 return -EINVAL; 2940 2941 for (i = 1; i < port; i++) 2942 off += mlx4_get_eqs_per_port(dev, i); 2943 2944 requested_cpu = eqn - off - !!(eqn > MLX4_EQ_ASYNC); 2945 2946 /* Meaning EQs are shared, and this call comes from the second port */ 2947 if (requested_cpu < 0) 2948 return 0; 2949 2950 eq = &priv->eq_table.eq[eqn]; 2951 2952 if (!zalloc_cpumask_var(&eq->affinity_mask, GFP_KERNEL)) 2953 return -ENOMEM; 2954 2955 cpumask_set_cpu(requested_cpu, eq->affinity_mask); 2956 2957 return 0; 2958 } 2959 2960 static void mlx4_enable_msi_x(struct mlx4_dev *dev) 2961 { 2962 struct mlx4_priv *priv = mlx4_priv(dev); 2963 struct msix_entry *entries; 2964 int i; 2965 int port = 0; 2966 2967 if (msi_x) { 2968 int nreq = min3(dev->caps.num_ports * 2969 (int)num_online_cpus() + 1, 2970 dev->caps.num_eqs - dev->caps.reserved_eqs, 2971 MAX_MSIX); 2972 2973 if (msi_x > 1) 2974 nreq = min_t(int, nreq, msi_x); 2975 2976 entries = kcalloc(nreq, sizeof(*entries), GFP_KERNEL); 2977 if (!entries) 2978 goto no_msi; 2979 2980 for (i = 0; i < nreq; ++i) 2981 entries[i].entry = i; 2982 2983 nreq = pci_enable_msix_range(dev->persist->pdev, entries, 2, 2984 nreq); 2985 2986 if (nreq < 0 || nreq < MLX4_EQ_ASYNC) { 2987 kfree(entries); 2988 goto no_msi; 2989 } 2990 /* 1 is reserved for events (asyncrounous EQ) */ 2991 dev->caps.num_comp_vectors = nreq - 1; 2992 2993 priv->eq_table.eq[MLX4_EQ_ASYNC].irq = entries[0].vector; 2994 bitmap_zero(priv->eq_table.eq[MLX4_EQ_ASYNC].actv_ports.ports, 2995 dev->caps.num_ports); 2996 2997 for (i = 0; i < dev->caps.num_comp_vectors + 1; i++) { 2998 if (i == MLX4_EQ_ASYNC) 2999 continue; 3000 3001 priv->eq_table.eq[i].irq = 3002 entries[i + 1 - !!(i > MLX4_EQ_ASYNC)].vector; 3003 3004 if (MLX4_IS_LEGACY_EQ_MODE(dev->caps)) { 3005 bitmap_fill(priv->eq_table.eq[i].actv_ports.ports, 3006 dev->caps.num_ports); 3007 /* We don't set affinity hint when there 3008 * aren't enough EQs 3009 */ 3010 } else { 3011 set_bit(port, 3012 priv->eq_table.eq[i].actv_ports.ports); 3013 if (mlx4_init_affinity_hint(dev, port + 1, i)) 3014 mlx4_warn(dev, "Couldn't init hint cpumask for EQ %d\n", 3015 i); 3016 } 3017 /* We divide the Eqs evenly between the two ports. 3018 * (dev->caps.num_comp_vectors / dev->caps.num_ports) 3019 * refers to the number of Eqs per port 3020 * (i.e eqs_per_port). Theoretically, we would like to 3021 * write something like (i + 1) % eqs_per_port == 0. 3022 * However, since there's an asynchronous Eq, we have 3023 * to skip over it by comparing this condition to 3024 * !!((i + 1) > MLX4_EQ_ASYNC). 3025 */ 3026 if ((dev->caps.num_comp_vectors > dev->caps.num_ports) && 3027 ((i + 1) % 3028 (dev->caps.num_comp_vectors / dev->caps.num_ports)) == 3029 !!((i + 1) > MLX4_EQ_ASYNC)) 3030 /* If dev->caps.num_comp_vectors < dev->caps.num_ports, 3031 * everything is shared anyway. 3032 */ 3033 port++; 3034 } 3035 3036 dev->flags |= MLX4_FLAG_MSI_X; 3037 3038 kfree(entries); 3039 return; 3040 } 3041 3042 no_msi: 3043 dev->caps.num_comp_vectors = 1; 3044 3045 BUG_ON(MLX4_EQ_ASYNC >= 2); 3046 for (i = 0; i < 2; ++i) { 3047 priv->eq_table.eq[i].irq = dev->persist->pdev->irq; 3048 if (i != MLX4_EQ_ASYNC) { 3049 bitmap_fill(priv->eq_table.eq[i].actv_ports.ports, 3050 dev->caps.num_ports); 3051 } 3052 } 3053 } 3054 3055 static int mlx4_devlink_port_type_set(struct devlink_port *devlink_port, 3056 enum devlink_port_type port_type) 3057 { 3058 struct mlx4_port_info *info = container_of(devlink_port, 3059 struct mlx4_port_info, 3060 devlink_port); 3061 enum mlx4_port_type mlx4_port_type; 3062 3063 switch (port_type) { 3064 case DEVLINK_PORT_TYPE_AUTO: 3065 mlx4_port_type = MLX4_PORT_TYPE_AUTO; 3066 break; 3067 case DEVLINK_PORT_TYPE_ETH: 3068 mlx4_port_type = MLX4_PORT_TYPE_ETH; 3069 break; 3070 case DEVLINK_PORT_TYPE_IB: 3071 mlx4_port_type = MLX4_PORT_TYPE_IB; 3072 break; 3073 default: 3074 return -EOPNOTSUPP; 3075 } 3076 3077 return __set_port_type(info, mlx4_port_type); 3078 } 3079 3080 static const struct devlink_port_ops mlx4_devlink_port_ops = { 3081 .port_type_set = mlx4_devlink_port_type_set, 3082 }; 3083 3084 static int mlx4_init_port_info(struct mlx4_dev *dev, int port) 3085 { 3086 struct devlink *devlink = priv_to_devlink(mlx4_priv(dev)); 3087 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port]; 3088 int err; 3089 3090 err = devl_port_register_with_ops(devlink, &info->devlink_port, port, 3091 &mlx4_devlink_port_ops); 3092 if (err) 3093 return err; 3094 3095 /* Ethernet and IB drivers will normally set the port type, 3096 * but if they are not built set the type now to prevent 3097 * devlink_port_type_warn() from firing. 3098 */ 3099 if (!IS_ENABLED(CONFIG_MLX4_EN) && 3100 dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH) 3101 devlink_port_type_eth_set(&info->devlink_port); 3102 else if (!IS_ENABLED(CONFIG_MLX4_INFINIBAND) && 3103 dev->caps.port_type[port] == MLX4_PORT_TYPE_IB) 3104 devlink_port_type_ib_set(&info->devlink_port, NULL); 3105 3106 info->dev = dev; 3107 info->port = port; 3108 if (!mlx4_is_slave(dev)) { 3109 mlx4_init_mac_table(dev, &info->mac_table); 3110 mlx4_init_vlan_table(dev, &info->vlan_table); 3111 mlx4_init_roce_gid_table(dev, &info->gid_table); 3112 info->base_qpn = mlx4_get_base_qpn(dev, port); 3113 } 3114 3115 sprintf(info->dev_name, "mlx4_port%d", port); 3116 info->port_attr.attr.name = info->dev_name; 3117 if (mlx4_is_mfunc(dev)) { 3118 info->port_attr.attr.mode = 0444; 3119 } else { 3120 info->port_attr.attr.mode = 0644; 3121 info->port_attr.store = set_port_type; 3122 } 3123 info->port_attr.show = show_port_type; 3124 sysfs_attr_init(&info->port_attr.attr); 3125 3126 err = device_create_file(&dev->persist->pdev->dev, &info->port_attr); 3127 if (err) { 3128 mlx4_err(dev, "Failed to create file for port %d\n", port); 3129 devlink_port_type_clear(&info->devlink_port); 3130 devl_port_unregister(&info->devlink_port); 3131 info->port = -1; 3132 return err; 3133 } 3134 3135 sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port); 3136 info->port_mtu_attr.attr.name = info->dev_mtu_name; 3137 if (mlx4_is_mfunc(dev)) { 3138 info->port_mtu_attr.attr.mode = 0444; 3139 } else { 3140 info->port_mtu_attr.attr.mode = 0644; 3141 info->port_mtu_attr.store = set_port_ib_mtu; 3142 } 3143 info->port_mtu_attr.show = show_port_ib_mtu; 3144 sysfs_attr_init(&info->port_mtu_attr.attr); 3145 3146 err = device_create_file(&dev->persist->pdev->dev, 3147 &info->port_mtu_attr); 3148 if (err) { 3149 mlx4_err(dev, "Failed to create mtu file for port %d\n", port); 3150 device_remove_file(&info->dev->persist->pdev->dev, 3151 &info->port_attr); 3152 devlink_port_type_clear(&info->devlink_port); 3153 devl_port_unregister(&info->devlink_port); 3154 info->port = -1; 3155 return err; 3156 } 3157 3158 return 0; 3159 } 3160 3161 static void mlx4_cleanup_port_info(struct mlx4_port_info *info) 3162 { 3163 if (info->port < 0) 3164 return; 3165 3166 device_remove_file(&info->dev->persist->pdev->dev, &info->port_attr); 3167 device_remove_file(&info->dev->persist->pdev->dev, 3168 &info->port_mtu_attr); 3169 devlink_port_type_clear(&info->devlink_port); 3170 devl_port_unregister(&info->devlink_port); 3171 3172 #ifdef CONFIG_RFS_ACCEL 3173 free_irq_cpu_rmap(info->rmap); 3174 info->rmap = NULL; 3175 #endif 3176 } 3177 3178 static int mlx4_init_steering(struct mlx4_dev *dev) 3179 { 3180 struct mlx4_priv *priv = mlx4_priv(dev); 3181 int num_entries = dev->caps.num_ports; 3182 int i, j; 3183 3184 priv->steer = kcalloc(num_entries, sizeof(struct mlx4_steer), 3185 GFP_KERNEL); 3186 if (!priv->steer) 3187 return -ENOMEM; 3188 3189 for (i = 0; i < num_entries; i++) 3190 for (j = 0; j < MLX4_NUM_STEERS; j++) { 3191 INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]); 3192 INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]); 3193 } 3194 return 0; 3195 } 3196 3197 static void mlx4_clear_steering(struct mlx4_dev *dev) 3198 { 3199 struct mlx4_priv *priv = mlx4_priv(dev); 3200 struct mlx4_steer_index *entry, *tmp_entry; 3201 struct mlx4_promisc_qp *pqp, *tmp_pqp; 3202 int num_entries = dev->caps.num_ports; 3203 int i, j; 3204 3205 for (i = 0; i < num_entries; i++) { 3206 for (j = 0; j < MLX4_NUM_STEERS; j++) { 3207 list_for_each_entry_safe(pqp, tmp_pqp, 3208 &priv->steer[i].promisc_qps[j], 3209 list) { 3210 list_del(&pqp->list); 3211 kfree(pqp); 3212 } 3213 list_for_each_entry_safe(entry, tmp_entry, 3214 &priv->steer[i].steer_entries[j], 3215 list) { 3216 list_del(&entry->list); 3217 list_for_each_entry_safe(pqp, tmp_pqp, 3218 &entry->duplicates, 3219 list) { 3220 list_del(&pqp->list); 3221 kfree(pqp); 3222 } 3223 kfree(entry); 3224 } 3225 } 3226 } 3227 kfree(priv->steer); 3228 } 3229 3230 static int extended_func_num(struct pci_dev *pdev) 3231 { 3232 return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn); 3233 } 3234 3235 #define MLX4_OWNER_BASE 0x8069c 3236 #define MLX4_OWNER_SIZE 4 3237 3238 static int mlx4_get_ownership(struct mlx4_dev *dev) 3239 { 3240 void __iomem *owner; 3241 u32 ret; 3242 3243 if (pci_channel_offline(dev->persist->pdev)) 3244 return -EIO; 3245 3246 owner = ioremap(pci_resource_start(dev->persist->pdev, 0) + 3247 MLX4_OWNER_BASE, 3248 MLX4_OWNER_SIZE); 3249 if (!owner) { 3250 mlx4_err(dev, "Failed to obtain ownership bit\n"); 3251 return -ENOMEM; 3252 } 3253 3254 ret = readl(owner); 3255 iounmap(owner); 3256 return (int) !!ret; 3257 } 3258 3259 static void mlx4_free_ownership(struct mlx4_dev *dev) 3260 { 3261 void __iomem *owner; 3262 3263 if (pci_channel_offline(dev->persist->pdev)) 3264 return; 3265 3266 owner = ioremap(pci_resource_start(dev->persist->pdev, 0) + 3267 MLX4_OWNER_BASE, 3268 MLX4_OWNER_SIZE); 3269 if (!owner) { 3270 mlx4_err(dev, "Failed to obtain ownership bit\n"); 3271 return; 3272 } 3273 writel(0, owner); 3274 msleep(1000); 3275 iounmap(owner); 3276 } 3277 3278 #define SRIOV_VALID_STATE(flags) (!!((flags) & MLX4_FLAG_SRIOV) ==\ 3279 !!((flags) & MLX4_FLAG_MASTER)) 3280 3281 static u64 mlx4_enable_sriov(struct mlx4_dev *dev, struct pci_dev *pdev, 3282 u8 total_vfs, int existing_vfs, int reset_flow) 3283 { 3284 u64 dev_flags = dev->flags; 3285 int err = 0; 3286 int fw_enabled_sriov_vfs = min(pci_sriov_get_totalvfs(pdev), 3287 MLX4_MAX_NUM_VF); 3288 3289 if (reset_flow) { 3290 dev->dev_vfs = kcalloc(total_vfs, sizeof(*dev->dev_vfs), 3291 GFP_KERNEL); 3292 if (!dev->dev_vfs) 3293 goto free_mem; 3294 return dev_flags; 3295 } 3296 3297 atomic_inc(&pf_loading); 3298 if (dev->flags & MLX4_FLAG_SRIOV) { 3299 if (existing_vfs != total_vfs) { 3300 mlx4_err(dev, "SR-IOV was already enabled, but with num_vfs (%d) different than requested (%d)\n", 3301 existing_vfs, total_vfs); 3302 total_vfs = existing_vfs; 3303 } 3304 } 3305 3306 dev->dev_vfs = kcalloc(total_vfs, sizeof(*dev->dev_vfs), GFP_KERNEL); 3307 if (NULL == dev->dev_vfs) { 3308 mlx4_err(dev, "Failed to allocate memory for VFs\n"); 3309 goto disable_sriov; 3310 } 3311 3312 if (!(dev->flags & MLX4_FLAG_SRIOV)) { 3313 if (total_vfs > fw_enabled_sriov_vfs) { 3314 mlx4_err(dev, "requested vfs (%d) > available vfs (%d). Continuing without SR_IOV\n", 3315 total_vfs, fw_enabled_sriov_vfs); 3316 err = -ENOMEM; 3317 goto disable_sriov; 3318 } 3319 mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n", total_vfs); 3320 err = pci_enable_sriov(pdev, total_vfs); 3321 } 3322 if (err) { 3323 mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d)\n", 3324 err); 3325 goto disable_sriov; 3326 } else { 3327 mlx4_warn(dev, "Running in master mode\n"); 3328 dev_flags |= MLX4_FLAG_SRIOV | 3329 MLX4_FLAG_MASTER; 3330 dev_flags &= ~MLX4_FLAG_SLAVE; 3331 dev->persist->num_vfs = total_vfs; 3332 } 3333 return dev_flags; 3334 3335 disable_sriov: 3336 atomic_dec(&pf_loading); 3337 free_mem: 3338 dev->persist->num_vfs = 0; 3339 kfree(dev->dev_vfs); 3340 dev->dev_vfs = NULL; 3341 return dev_flags & ~MLX4_FLAG_MASTER; 3342 } 3343 3344 enum { 3345 MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64 = -1, 3346 }; 3347 3348 static int mlx4_check_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap, 3349 int *nvfs) 3350 { 3351 int requested_vfs = nvfs[0] + nvfs[1] + nvfs[2]; 3352 /* Checking for 64 VFs as a limitation of CX2 */ 3353 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_80_VFS) && 3354 requested_vfs >= 64) { 3355 mlx4_err(dev, "Requested %d VFs, but FW does not support more than 64\n", 3356 requested_vfs); 3357 return MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64; 3358 } 3359 return 0; 3360 } 3361 3362 static int mlx4_pci_enable_device(struct mlx4_dev *dev) 3363 { 3364 struct pci_dev *pdev = dev->persist->pdev; 3365 int err = 0; 3366 3367 mutex_lock(&dev->persist->pci_status_mutex); 3368 if (dev->persist->pci_status == MLX4_PCI_STATUS_DISABLED) { 3369 err = pci_enable_device(pdev); 3370 if (!err) 3371 dev->persist->pci_status = MLX4_PCI_STATUS_ENABLED; 3372 } 3373 mutex_unlock(&dev->persist->pci_status_mutex); 3374 3375 return err; 3376 } 3377 3378 static void mlx4_pci_disable_device(struct mlx4_dev *dev) 3379 { 3380 struct pci_dev *pdev = dev->persist->pdev; 3381 3382 mutex_lock(&dev->persist->pci_status_mutex); 3383 if (dev->persist->pci_status == MLX4_PCI_STATUS_ENABLED) { 3384 pci_disable_device(pdev); 3385 dev->persist->pci_status = MLX4_PCI_STATUS_DISABLED; 3386 } 3387 mutex_unlock(&dev->persist->pci_status_mutex); 3388 } 3389 3390 static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data, 3391 int total_vfs, int *nvfs, struct mlx4_priv *priv, 3392 int reset_flow) 3393 { 3394 struct devlink *devlink = priv_to_devlink(priv); 3395 struct mlx4_dev *dev; 3396 unsigned sum = 0; 3397 int err; 3398 int port; 3399 int i; 3400 struct mlx4_dev_cap *dev_cap = NULL; 3401 int existing_vfs = 0; 3402 3403 devl_assert_locked(devlink); 3404 dev = &priv->dev; 3405 3406 err = mlx4_adev_init(dev); 3407 if (err) 3408 return err; 3409 3410 ATOMIC_INIT_NOTIFIER_HEAD(&priv->event_nh); 3411 3412 mutex_init(&priv->port_mutex); 3413 mutex_init(&priv->bond_mutex); 3414 3415 INIT_LIST_HEAD(&priv->pgdir_list); 3416 mutex_init(&priv->pgdir_mutex); 3417 spin_lock_init(&priv->cmd.context_lock); 3418 3419 INIT_LIST_HEAD(&priv->bf_list); 3420 mutex_init(&priv->bf_mutex); 3421 3422 dev->rev_id = pdev->revision; 3423 dev->numa_node = dev_to_node(&pdev->dev); 3424 3425 /* Detect if this device is a virtual function */ 3426 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) { 3427 mlx4_warn(dev, "Detected virtual function - running in slave mode\n"); 3428 dev->flags |= MLX4_FLAG_SLAVE; 3429 } else { 3430 /* We reset the device and enable SRIOV only for physical 3431 * devices. Try to claim ownership on the device; 3432 * if already taken, skip -- do not allow multiple PFs */ 3433 err = mlx4_get_ownership(dev); 3434 if (err) { 3435 if (err < 0) 3436 goto err_adev; 3437 else { 3438 mlx4_warn(dev, "Multiple PFs not yet supported - Skipping PF\n"); 3439 err = -EINVAL; 3440 goto err_adev; 3441 } 3442 } 3443 3444 atomic_set(&priv->opreq_count, 0); 3445 INIT_WORK(&priv->opreq_task, mlx4_opreq_action); 3446 3447 /* 3448 * Now reset the HCA before we touch the PCI capabilities or 3449 * attempt a firmware command, since a boot ROM may have left 3450 * the HCA in an undefined state. 3451 */ 3452 err = mlx4_reset(dev); 3453 if (err) { 3454 mlx4_err(dev, "Failed to reset HCA, aborting\n"); 3455 goto err_sriov; 3456 } 3457 3458 if (total_vfs) { 3459 dev->flags = MLX4_FLAG_MASTER; 3460 existing_vfs = pci_num_vf(pdev); 3461 if (existing_vfs) 3462 dev->flags |= MLX4_FLAG_SRIOV; 3463 dev->persist->num_vfs = total_vfs; 3464 } 3465 } 3466 3467 /* on load remove any previous indication of internal error, 3468 * device is up. 3469 */ 3470 dev->persist->state = MLX4_DEVICE_STATE_UP; 3471 3472 slave_start: 3473 err = mlx4_cmd_init(dev); 3474 if (err) { 3475 mlx4_err(dev, "Failed to init command interface, aborting\n"); 3476 goto err_sriov; 3477 } 3478 3479 /* In slave functions, the communication channel must be initialized 3480 * before posting commands. Also, init num_slaves before calling 3481 * mlx4_init_hca */ 3482 if (mlx4_is_mfunc(dev)) { 3483 if (mlx4_is_master(dev)) { 3484 dev->num_slaves = MLX4_MAX_NUM_SLAVES; 3485 3486 } else { 3487 dev->num_slaves = 0; 3488 err = mlx4_multi_func_init(dev); 3489 if (err) { 3490 mlx4_err(dev, "Failed to init slave mfunc interface, aborting\n"); 3491 goto err_cmd; 3492 } 3493 } 3494 } 3495 3496 err = mlx4_init_fw(dev); 3497 if (err) { 3498 mlx4_err(dev, "Failed to init fw, aborting.\n"); 3499 goto err_mfunc; 3500 } 3501 3502 if (mlx4_is_master(dev)) { 3503 /* when we hit the goto slave_start below, dev_cap already initialized */ 3504 if (!dev_cap) { 3505 dev_cap = kzalloc(sizeof(*dev_cap), GFP_KERNEL); 3506 3507 if (!dev_cap) { 3508 err = -ENOMEM; 3509 goto err_fw; 3510 } 3511 3512 err = mlx4_QUERY_DEV_CAP(dev, dev_cap); 3513 if (err) { 3514 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n"); 3515 goto err_fw; 3516 } 3517 3518 if (mlx4_check_dev_cap(dev, dev_cap, nvfs)) 3519 goto err_fw; 3520 3521 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) { 3522 u64 dev_flags = mlx4_enable_sriov(dev, pdev, 3523 total_vfs, 3524 existing_vfs, 3525 reset_flow); 3526 3527 mlx4_close_fw(dev); 3528 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL); 3529 dev->flags = dev_flags; 3530 if (!SRIOV_VALID_STATE(dev->flags)) { 3531 mlx4_err(dev, "Invalid SRIOV state\n"); 3532 goto err_sriov; 3533 } 3534 err = mlx4_reset(dev); 3535 if (err) { 3536 mlx4_err(dev, "Failed to reset HCA, aborting.\n"); 3537 goto err_sriov; 3538 } 3539 goto slave_start; 3540 } 3541 } else { 3542 /* Legacy mode FW requires SRIOV to be enabled before 3543 * doing QUERY_DEV_CAP, since max_eq's value is different if 3544 * SRIOV is enabled. 3545 */ 3546 memset(dev_cap, 0, sizeof(*dev_cap)); 3547 err = mlx4_QUERY_DEV_CAP(dev, dev_cap); 3548 if (err) { 3549 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n"); 3550 goto err_fw; 3551 } 3552 3553 if (mlx4_check_dev_cap(dev, dev_cap, nvfs)) 3554 goto err_fw; 3555 } 3556 } 3557 3558 err = mlx4_init_hca(dev); 3559 if (err) { 3560 if (err == -EACCES) { 3561 /* Not primary Physical function 3562 * Running in slave mode */ 3563 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL); 3564 /* We're not a PF */ 3565 if (dev->flags & MLX4_FLAG_SRIOV) { 3566 if (!existing_vfs) 3567 pci_disable_sriov(pdev); 3568 if (mlx4_is_master(dev) && !reset_flow) 3569 atomic_dec(&pf_loading); 3570 dev->flags &= ~MLX4_FLAG_SRIOV; 3571 } 3572 if (!mlx4_is_slave(dev)) 3573 mlx4_free_ownership(dev); 3574 dev->flags |= MLX4_FLAG_SLAVE; 3575 dev->flags &= ~MLX4_FLAG_MASTER; 3576 goto slave_start; 3577 } else 3578 goto err_fw; 3579 } 3580 3581 if (mlx4_is_master(dev) && (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) { 3582 u64 dev_flags = mlx4_enable_sriov(dev, pdev, total_vfs, 3583 existing_vfs, reset_flow); 3584 3585 if ((dev->flags ^ dev_flags) & (MLX4_FLAG_MASTER | MLX4_FLAG_SLAVE)) { 3586 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_VHCR); 3587 dev->flags = dev_flags; 3588 err = mlx4_cmd_init(dev); 3589 if (err) { 3590 /* Only VHCR is cleaned up, so could still 3591 * send FW commands 3592 */ 3593 mlx4_err(dev, "Failed to init VHCR command interface, aborting\n"); 3594 goto err_close; 3595 } 3596 } else { 3597 dev->flags = dev_flags; 3598 } 3599 3600 if (!SRIOV_VALID_STATE(dev->flags)) { 3601 mlx4_err(dev, "Invalid SRIOV state\n"); 3602 err = -EINVAL; 3603 goto err_close; 3604 } 3605 } 3606 3607 /* check if the device is functioning at its maximum possible speed. 3608 * No return code for this call, just warn the user in case of PCI 3609 * express device capabilities are under-satisfied by the bus. 3610 */ 3611 if (!mlx4_is_slave(dev)) 3612 pcie_print_link_status(dev->persist->pdev); 3613 3614 /* In master functions, the communication channel must be initialized 3615 * after obtaining its address from fw */ 3616 if (mlx4_is_master(dev)) { 3617 if (dev->caps.num_ports < 2 && 3618 num_vfs_argc > 1) { 3619 err = -EINVAL; 3620 mlx4_err(dev, 3621 "Error: Trying to configure VFs on port 2, but HCA has only %d physical ports\n", 3622 dev->caps.num_ports); 3623 goto err_close; 3624 } 3625 memcpy(dev->persist->nvfs, nvfs, sizeof(dev->persist->nvfs)); 3626 3627 for (i = 0; 3628 i < sizeof(dev->persist->nvfs)/ 3629 sizeof(dev->persist->nvfs[0]); i++) { 3630 unsigned j; 3631 3632 for (j = 0; j < dev->persist->nvfs[i]; ++sum, ++j) { 3633 dev->dev_vfs[sum].min_port = i < 2 ? i + 1 : 1; 3634 dev->dev_vfs[sum].n_ports = i < 2 ? 1 : 3635 dev->caps.num_ports; 3636 } 3637 } 3638 3639 /* In master functions, the communication channel 3640 * must be initialized after obtaining its address from fw 3641 */ 3642 err = mlx4_multi_func_init(dev); 3643 if (err) { 3644 mlx4_err(dev, "Failed to init master mfunc interface, aborting.\n"); 3645 goto err_close; 3646 } 3647 } 3648 3649 err = mlx4_alloc_eq_table(dev); 3650 if (err) 3651 goto err_master_mfunc; 3652 3653 bitmap_zero(priv->msix_ctl.pool_bm, MAX_MSIX); 3654 mutex_init(&priv->msix_ctl.pool_lock); 3655 3656 mlx4_enable_msi_x(dev); 3657 if ((mlx4_is_mfunc(dev)) && 3658 !(dev->flags & MLX4_FLAG_MSI_X)) { 3659 err = -EOPNOTSUPP; 3660 mlx4_err(dev, "INTx is not supported in multi-function mode, aborting\n"); 3661 goto err_free_eq; 3662 } 3663 3664 if (!mlx4_is_slave(dev)) { 3665 err = mlx4_init_steering(dev); 3666 if (err) 3667 goto err_disable_msix; 3668 } 3669 3670 mlx4_init_quotas(dev); 3671 3672 err = mlx4_setup_hca(dev); 3673 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) && 3674 !mlx4_is_mfunc(dev)) { 3675 dev->flags &= ~MLX4_FLAG_MSI_X; 3676 dev->caps.num_comp_vectors = 1; 3677 pci_disable_msix(pdev); 3678 err = mlx4_setup_hca(dev); 3679 } 3680 3681 if (err) 3682 goto err_steer; 3683 3684 /* When PF resources are ready arm its comm channel to enable 3685 * getting commands 3686 */ 3687 if (mlx4_is_master(dev)) { 3688 err = mlx4_ARM_COMM_CHANNEL(dev); 3689 if (err) { 3690 mlx4_err(dev, " Failed to arm comm channel eq: %x\n", 3691 err); 3692 goto err_steer; 3693 } 3694 } 3695 3696 for (port = 1; port <= dev->caps.num_ports; port++) { 3697 err = mlx4_init_port_info(dev, port); 3698 if (err) 3699 goto err_port; 3700 } 3701 3702 priv->v2p.port1 = 1; 3703 priv->v2p.port2 = 2; 3704 3705 err = mlx4_register_device(dev); 3706 if (err) 3707 goto err_port; 3708 3709 mlx4_sense_init(dev); 3710 mlx4_start_sense(dev); 3711 3712 priv->removed = 0; 3713 3714 if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow) 3715 atomic_dec(&pf_loading); 3716 3717 kfree(dev_cap); 3718 return 0; 3719 3720 err_port: 3721 for (--port; port >= 1; --port) 3722 mlx4_cleanup_port_info(&priv->port[port]); 3723 3724 mlx4_cleanup_default_counters(dev); 3725 if (!mlx4_is_slave(dev)) 3726 mlx4_cleanup_counters_table(dev); 3727 mlx4_cleanup_qp_table(dev); 3728 mlx4_cleanup_srq_table(dev); 3729 mlx4_cleanup_cq_table(dev); 3730 mlx4_cmd_use_polling(dev); 3731 mlx4_cleanup_eq_table(dev); 3732 mlx4_cleanup_mcg_table(dev); 3733 mlx4_cleanup_mr_table(dev); 3734 mlx4_cleanup_xrcd_table(dev); 3735 mlx4_cleanup_pd_table(dev); 3736 mlx4_cleanup_uar_table(dev); 3737 3738 err_steer: 3739 if (!mlx4_is_slave(dev)) 3740 mlx4_clear_steering(dev); 3741 3742 err_disable_msix: 3743 if (dev->flags & MLX4_FLAG_MSI_X) 3744 pci_disable_msix(pdev); 3745 3746 err_free_eq: 3747 mlx4_free_eq_table(dev); 3748 3749 err_master_mfunc: 3750 if (mlx4_is_master(dev)) { 3751 mlx4_free_resource_tracker(dev, RES_TR_FREE_STRUCTS_ONLY); 3752 mlx4_multi_func_cleanup(dev); 3753 } 3754 3755 if (mlx4_is_slave(dev)) 3756 mlx4_slave_destroy_special_qp_cap(dev); 3757 3758 err_close: 3759 mlx4_close_hca(dev); 3760 3761 err_fw: 3762 mlx4_close_fw(dev); 3763 3764 err_mfunc: 3765 if (mlx4_is_slave(dev)) 3766 mlx4_multi_func_cleanup(dev); 3767 3768 err_cmd: 3769 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL); 3770 3771 err_sriov: 3772 if (dev->flags & MLX4_FLAG_SRIOV && !existing_vfs) { 3773 pci_disable_sriov(pdev); 3774 dev->flags &= ~MLX4_FLAG_SRIOV; 3775 } 3776 3777 if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow) 3778 atomic_dec(&pf_loading); 3779 3780 kfree(priv->dev.dev_vfs); 3781 3782 if (!mlx4_is_slave(dev)) 3783 mlx4_free_ownership(dev); 3784 3785 kfree(dev_cap); 3786 3787 err_adev: 3788 mlx4_adev_cleanup(dev); 3789 return err; 3790 } 3791 3792 static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data, 3793 struct mlx4_priv *priv) 3794 { 3795 int err; 3796 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0}; 3797 int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0}; 3798 const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = { 3799 {2, 0, 0}, {0, 1, 2}, {0, 1, 2} }; 3800 unsigned total_vfs = 0; 3801 unsigned int i; 3802 3803 pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev)); 3804 3805 err = mlx4_pci_enable_device(&priv->dev); 3806 if (err) { 3807 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n"); 3808 return err; 3809 } 3810 3811 /* Due to requirement that all VFs and the PF are *guaranteed* 2 MACS 3812 * per port, we must limit the number of VFs to 63 (since their are 3813 * 128 MACs) 3814 */ 3815 for (i = 0; i < ARRAY_SIZE(nvfs) && i < num_vfs_argc; 3816 total_vfs += nvfs[param_map[num_vfs_argc - 1][i]], i++) { 3817 nvfs[param_map[num_vfs_argc - 1][i]] = num_vfs[i]; 3818 if (nvfs[i] < 0) { 3819 dev_err(&pdev->dev, "num_vfs module parameter cannot be negative\n"); 3820 err = -EINVAL; 3821 goto err_disable_pdev; 3822 } 3823 } 3824 for (i = 0; i < ARRAY_SIZE(prb_vf) && i < probe_vfs_argc; 3825 i++) { 3826 prb_vf[param_map[probe_vfs_argc - 1][i]] = probe_vf[i]; 3827 if (prb_vf[i] < 0 || prb_vf[i] > nvfs[i]) { 3828 dev_err(&pdev->dev, "probe_vf module parameter cannot be negative or greater than num_vfs\n"); 3829 err = -EINVAL; 3830 goto err_disable_pdev; 3831 } 3832 } 3833 if (total_vfs > MLX4_MAX_NUM_VF) { 3834 dev_err(&pdev->dev, 3835 "Requested more VF's (%d) than allowed by hw (%d)\n", 3836 total_vfs, MLX4_MAX_NUM_VF); 3837 err = -EINVAL; 3838 goto err_disable_pdev; 3839 } 3840 3841 for (i = 0; i < MLX4_MAX_PORTS; i++) { 3842 if (nvfs[i] + nvfs[2] > MLX4_MAX_NUM_VF_P_PORT) { 3843 dev_err(&pdev->dev, 3844 "Requested more VF's (%d) for port (%d) than allowed by driver (%d)\n", 3845 nvfs[i] + nvfs[2], i + 1, 3846 MLX4_MAX_NUM_VF_P_PORT); 3847 err = -EINVAL; 3848 goto err_disable_pdev; 3849 } 3850 } 3851 3852 /* Check for BARs. */ 3853 if (!(pci_dev_data & MLX4_PCI_DEV_IS_VF) && 3854 !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { 3855 dev_err(&pdev->dev, "Missing DCS, aborting (driver_data: 0x%x, pci_resource_flags(pdev, 0):0x%lx)\n", 3856 pci_dev_data, pci_resource_flags(pdev, 0)); 3857 err = -ENODEV; 3858 goto err_disable_pdev; 3859 } 3860 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) { 3861 dev_err(&pdev->dev, "Missing UAR, aborting\n"); 3862 err = -ENODEV; 3863 goto err_disable_pdev; 3864 } 3865 3866 err = pci_request_regions(pdev, DRV_NAME); 3867 if (err) { 3868 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n"); 3869 goto err_disable_pdev; 3870 } 3871 3872 pci_set_master(pdev); 3873 3874 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 3875 if (err) { 3876 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n"); 3877 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 3878 if (err) { 3879 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n"); 3880 goto err_release_regions; 3881 } 3882 } 3883 3884 /* Allow large DMA segments, up to the firmware limit of 1 GB */ 3885 dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024); 3886 /* Detect if this device is a virtual function */ 3887 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) { 3888 /* When acting as pf, we normally skip vfs unless explicitly 3889 * requested to probe them. 3890 */ 3891 if (total_vfs) { 3892 unsigned vfs_offset = 0; 3893 3894 for (i = 0; i < ARRAY_SIZE(nvfs) && 3895 vfs_offset + nvfs[i] < extended_func_num(pdev); 3896 vfs_offset += nvfs[i], i++) 3897 ; 3898 if (i == ARRAY_SIZE(nvfs)) { 3899 err = -ENODEV; 3900 goto err_release_regions; 3901 } 3902 if ((extended_func_num(pdev) - vfs_offset) 3903 > prb_vf[i]) { 3904 dev_warn(&pdev->dev, "Skipping virtual function:%d\n", 3905 extended_func_num(pdev)); 3906 err = -ENODEV; 3907 goto err_release_regions; 3908 } 3909 } 3910 } 3911 3912 err = mlx4_crdump_init(&priv->dev); 3913 if (err) 3914 goto err_release_regions; 3915 3916 err = mlx4_catas_init(&priv->dev); 3917 if (err) 3918 goto err_crdump; 3919 3920 err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 0); 3921 if (err) 3922 goto err_catas; 3923 3924 return 0; 3925 3926 err_catas: 3927 mlx4_catas_end(&priv->dev); 3928 3929 err_crdump: 3930 mlx4_crdump_end(&priv->dev); 3931 3932 err_release_regions: 3933 pci_release_regions(pdev); 3934 3935 err_disable_pdev: 3936 mlx4_pci_disable_device(&priv->dev); 3937 return err; 3938 } 3939 3940 static void mlx4_devlink_param_load_driverinit_values(struct devlink *devlink) 3941 { 3942 struct mlx4_priv *priv = devlink_priv(devlink); 3943 struct mlx4_dev *dev = &priv->dev; 3944 struct mlx4_fw_crdump *crdump = &dev->persist->crdump; 3945 union devlink_param_value saved_value; 3946 int err; 3947 3948 err = devl_param_driverinit_value_get(devlink, 3949 DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET, 3950 &saved_value); 3951 if (!err && mlx4_internal_err_reset != saved_value.vbool) { 3952 mlx4_internal_err_reset = saved_value.vbool; 3953 /* Notify on value changed on runtime configuration mode */ 3954 devl_param_value_changed(devlink, 3955 DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET); 3956 } 3957 err = devl_param_driverinit_value_get(devlink, 3958 DEVLINK_PARAM_GENERIC_ID_MAX_MACS, 3959 &saved_value); 3960 if (!err) 3961 log_num_mac = order_base_2(saved_value.vu32); 3962 err = devl_param_driverinit_value_get(devlink, 3963 MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE, 3964 &saved_value); 3965 if (!err) 3966 enable_64b_cqe_eqe = saved_value.vbool; 3967 err = devl_param_driverinit_value_get(devlink, 3968 MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR, 3969 &saved_value); 3970 if (!err) 3971 enable_4k_uar = saved_value.vbool; 3972 err = devl_param_driverinit_value_get(devlink, 3973 DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT, 3974 &saved_value); 3975 if (!err && crdump->snapshot_enable != saved_value.vbool) { 3976 crdump->snapshot_enable = saved_value.vbool; 3977 devl_param_value_changed(devlink, 3978 DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT); 3979 } 3980 } 3981 3982 static void mlx4_restart_one_down(struct pci_dev *pdev); 3983 static int mlx4_restart_one_up(struct pci_dev *pdev, bool reload, 3984 struct devlink *devlink); 3985 3986 static int mlx4_devlink_reload_down(struct devlink *devlink, bool netns_change, 3987 enum devlink_reload_action action, 3988 enum devlink_reload_limit limit, 3989 struct netlink_ext_ack *extack) 3990 { 3991 struct mlx4_priv *priv = devlink_priv(devlink); 3992 struct mlx4_dev *dev = &priv->dev; 3993 struct mlx4_dev_persistent *persist = dev->persist; 3994 3995 if (netns_change) { 3996 NL_SET_ERR_MSG_MOD(extack, "Namespace change is not supported"); 3997 return -EOPNOTSUPP; 3998 } 3999 if (persist->num_vfs) 4000 mlx4_warn(persist->dev, "Reload performed on PF, will cause reset on operating Virtual Functions\n"); 4001 mlx4_restart_one_down(persist->pdev); 4002 return 0; 4003 } 4004 4005 static int mlx4_devlink_reload_up(struct devlink *devlink, enum devlink_reload_action action, 4006 enum devlink_reload_limit limit, u32 *actions_performed, 4007 struct netlink_ext_ack *extack) 4008 { 4009 struct mlx4_priv *priv = devlink_priv(devlink); 4010 struct mlx4_dev *dev = &priv->dev; 4011 struct mlx4_dev_persistent *persist = dev->persist; 4012 int err; 4013 4014 *actions_performed = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT); 4015 err = mlx4_restart_one_up(persist->pdev, true, devlink); 4016 if (err) 4017 mlx4_err(persist->dev, "mlx4_restart_one_up failed, ret=%d\n", 4018 err); 4019 4020 return err; 4021 } 4022 4023 static const struct devlink_ops mlx4_devlink_ops = { 4024 .reload_actions = BIT(DEVLINK_RELOAD_ACTION_DRIVER_REINIT), 4025 .reload_down = mlx4_devlink_reload_down, 4026 .reload_up = mlx4_devlink_reload_up, 4027 }; 4028 4029 static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id) 4030 { 4031 struct devlink *devlink; 4032 struct mlx4_priv *priv; 4033 struct mlx4_dev *dev; 4034 int ret; 4035 4036 printk_once(KERN_INFO "%s", mlx4_version); 4037 4038 devlink = devlink_alloc(&mlx4_devlink_ops, sizeof(*priv), &pdev->dev); 4039 if (!devlink) 4040 return -ENOMEM; 4041 devl_lock(devlink); 4042 priv = devlink_priv(devlink); 4043 4044 dev = &priv->dev; 4045 dev->persist = kzalloc(sizeof(*dev->persist), GFP_KERNEL); 4046 if (!dev->persist) { 4047 ret = -ENOMEM; 4048 goto err_devlink_free; 4049 } 4050 dev->persist->pdev = pdev; 4051 dev->persist->dev = dev; 4052 pci_set_drvdata(pdev, dev->persist); 4053 priv->pci_dev_data = id->driver_data; 4054 mutex_init(&dev->persist->device_state_mutex); 4055 mutex_init(&dev->persist->interface_state_mutex); 4056 mutex_init(&dev->persist->pci_status_mutex); 4057 4058 ret = devl_params_register(devlink, mlx4_devlink_params, 4059 ARRAY_SIZE(mlx4_devlink_params)); 4060 if (ret) 4061 goto err_devlink_unregister; 4062 mlx4_devlink_set_params_init_values(devlink); 4063 ret = __mlx4_init_one(pdev, id->driver_data, priv); 4064 if (ret) 4065 goto err_params_unregister; 4066 4067 pci_save_state(pdev); 4068 devl_unlock(devlink); 4069 devlink_register(devlink); 4070 return 0; 4071 4072 err_params_unregister: 4073 devl_params_unregister(devlink, mlx4_devlink_params, 4074 ARRAY_SIZE(mlx4_devlink_params)); 4075 err_devlink_unregister: 4076 kfree(dev->persist); 4077 err_devlink_free: 4078 devl_unlock(devlink); 4079 devlink_free(devlink); 4080 return ret; 4081 } 4082 4083 static void mlx4_clean_dev(struct mlx4_dev *dev) 4084 { 4085 struct mlx4_dev_persistent *persist = dev->persist; 4086 struct mlx4_priv *priv = mlx4_priv(dev); 4087 unsigned long flags = (dev->flags & RESET_PERSIST_MASK_FLAGS); 4088 4089 memset(priv, 0, sizeof(*priv)); 4090 priv->dev.persist = persist; 4091 priv->dev.flags = flags; 4092 } 4093 4094 static void mlx4_unload_one(struct pci_dev *pdev) 4095 { 4096 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4097 struct mlx4_dev *dev = persist->dev; 4098 struct mlx4_priv *priv = mlx4_priv(dev); 4099 int pci_dev_data; 4100 struct devlink *devlink; 4101 int p, i; 4102 4103 devlink = priv_to_devlink(priv); 4104 devl_assert_locked(devlink); 4105 if (priv->removed) 4106 return; 4107 4108 /* saving current ports type for further use */ 4109 for (i = 0; i < dev->caps.num_ports; i++) { 4110 dev->persist->curr_port_type[i] = dev->caps.port_type[i + 1]; 4111 dev->persist->curr_port_poss_type[i] = dev->caps. 4112 possible_type[i + 1]; 4113 } 4114 4115 pci_dev_data = priv->pci_dev_data; 4116 4117 mlx4_stop_sense(dev); 4118 mlx4_unregister_device(dev); 4119 4120 for (p = 1; p <= dev->caps.num_ports; p++) { 4121 mlx4_cleanup_port_info(&priv->port[p]); 4122 mlx4_CLOSE_PORT(dev, p); 4123 } 4124 4125 if (mlx4_is_master(dev)) 4126 mlx4_free_resource_tracker(dev, 4127 RES_TR_FREE_SLAVES_ONLY); 4128 4129 mlx4_cleanup_default_counters(dev); 4130 if (!mlx4_is_slave(dev)) 4131 mlx4_cleanup_counters_table(dev); 4132 mlx4_cleanup_qp_table(dev); 4133 mlx4_cleanup_srq_table(dev); 4134 mlx4_cleanup_cq_table(dev); 4135 mlx4_cmd_use_polling(dev); 4136 mlx4_cleanup_eq_table(dev); 4137 mlx4_cleanup_mcg_table(dev); 4138 mlx4_cleanup_mr_table(dev); 4139 mlx4_cleanup_xrcd_table(dev); 4140 mlx4_cleanup_pd_table(dev); 4141 4142 if (mlx4_is_master(dev)) 4143 mlx4_free_resource_tracker(dev, 4144 RES_TR_FREE_STRUCTS_ONLY); 4145 4146 iounmap(priv->kar); 4147 mlx4_uar_free(dev, &priv->driver_uar); 4148 mlx4_cleanup_uar_table(dev); 4149 if (!mlx4_is_slave(dev)) 4150 mlx4_clear_steering(dev); 4151 mlx4_free_eq_table(dev); 4152 if (mlx4_is_master(dev)) 4153 mlx4_multi_func_cleanup(dev); 4154 mlx4_close_hca(dev); 4155 mlx4_close_fw(dev); 4156 if (mlx4_is_slave(dev)) 4157 mlx4_multi_func_cleanup(dev); 4158 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL); 4159 4160 if (dev->flags & MLX4_FLAG_MSI_X) 4161 pci_disable_msix(pdev); 4162 4163 if (!mlx4_is_slave(dev)) 4164 mlx4_free_ownership(dev); 4165 4166 mlx4_slave_destroy_special_qp_cap(dev); 4167 kfree(dev->dev_vfs); 4168 4169 mlx4_adev_cleanup(dev); 4170 4171 mlx4_clean_dev(dev); 4172 priv->pci_dev_data = pci_dev_data; 4173 priv->removed = 1; 4174 } 4175 4176 static void mlx4_remove_one(struct pci_dev *pdev) 4177 { 4178 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4179 struct mlx4_dev *dev = persist->dev; 4180 struct mlx4_priv *priv = mlx4_priv(dev); 4181 struct devlink *devlink = priv_to_devlink(priv); 4182 int active_vfs = 0; 4183 4184 devlink_unregister(devlink); 4185 4186 devl_lock(devlink); 4187 if (mlx4_is_slave(dev)) 4188 persist->interface_state |= MLX4_INTERFACE_STATE_NOWAIT; 4189 4190 mutex_lock(&persist->interface_state_mutex); 4191 persist->interface_state |= MLX4_INTERFACE_STATE_DELETION; 4192 mutex_unlock(&persist->interface_state_mutex); 4193 4194 /* Disabling SR-IOV is not allowed while there are active vf's */ 4195 if (mlx4_is_master(dev) && dev->flags & MLX4_FLAG_SRIOV) { 4196 active_vfs = mlx4_how_many_lives_vf(dev); 4197 if (active_vfs) { 4198 pr_warn("Removing PF when there are active VF's !!\n"); 4199 pr_warn("Will not disable SR-IOV.\n"); 4200 } 4201 } 4202 4203 /* device marked to be under deletion running now without the lock 4204 * letting other tasks to be terminated 4205 */ 4206 if (persist->interface_state & MLX4_INTERFACE_STATE_UP) 4207 mlx4_unload_one(pdev); 4208 else 4209 mlx4_info(dev, "%s: interface is down\n", __func__); 4210 mlx4_catas_end(dev); 4211 mlx4_crdump_end(dev); 4212 if (dev->flags & MLX4_FLAG_SRIOV && !active_vfs) { 4213 mlx4_warn(dev, "Disabling SR-IOV\n"); 4214 pci_disable_sriov(pdev); 4215 } 4216 4217 pci_release_regions(pdev); 4218 mlx4_pci_disable_device(dev); 4219 devl_params_unregister(devlink, mlx4_devlink_params, 4220 ARRAY_SIZE(mlx4_devlink_params)); 4221 kfree(dev->persist); 4222 devl_unlock(devlink); 4223 devlink_free(devlink); 4224 } 4225 4226 static int restore_current_port_types(struct mlx4_dev *dev, 4227 enum mlx4_port_type *types, 4228 enum mlx4_port_type *poss_types) 4229 { 4230 struct mlx4_priv *priv = mlx4_priv(dev); 4231 int err, i; 4232 4233 mlx4_stop_sense(dev); 4234 4235 mutex_lock(&priv->port_mutex); 4236 for (i = 0; i < dev->caps.num_ports; i++) 4237 dev->caps.possible_type[i + 1] = poss_types[i]; 4238 err = mlx4_change_port_types(dev, types); 4239 mlx4_start_sense(dev); 4240 mutex_unlock(&priv->port_mutex); 4241 4242 return err; 4243 } 4244 4245 static void mlx4_restart_one_down(struct pci_dev *pdev) 4246 { 4247 mlx4_unload_one(pdev); 4248 } 4249 4250 static int mlx4_restart_one_up(struct pci_dev *pdev, bool reload, 4251 struct devlink *devlink) 4252 { 4253 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4254 struct mlx4_dev *dev = persist->dev; 4255 struct mlx4_priv *priv = mlx4_priv(dev); 4256 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0}; 4257 int pci_dev_data, err, total_vfs; 4258 4259 pci_dev_data = priv->pci_dev_data; 4260 total_vfs = dev->persist->num_vfs; 4261 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs)); 4262 4263 if (reload) 4264 mlx4_devlink_param_load_driverinit_values(devlink); 4265 err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 1); 4266 if (err) { 4267 mlx4_err(dev, "%s: ERROR: mlx4_load_one failed, pci_name=%s, err=%d\n", 4268 __func__, pci_name(pdev), err); 4269 return err; 4270 } 4271 4272 err = restore_current_port_types(dev, dev->persist->curr_port_type, 4273 dev->persist->curr_port_poss_type); 4274 if (err) 4275 mlx4_err(dev, "could not restore original port types (%d)\n", 4276 err); 4277 4278 return err; 4279 } 4280 4281 int mlx4_restart_one(struct pci_dev *pdev) 4282 { 4283 mlx4_restart_one_down(pdev); 4284 return mlx4_restart_one_up(pdev, false, NULL); 4285 } 4286 4287 #define MLX_SP(id) { PCI_VDEVICE(MELLANOX, id), MLX4_PCI_DEV_FORCE_SENSE_PORT } 4288 #define MLX_VF(id) { PCI_VDEVICE(MELLANOX, id), MLX4_PCI_DEV_IS_VF } 4289 #define MLX_GN(id) { PCI_VDEVICE(MELLANOX, id), 0 } 4290 4291 static const struct pci_device_id mlx4_pci_table[] = { 4292 #ifdef CONFIG_MLX4_CORE_GEN2 4293 /* MT25408 "Hermon" */ 4294 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_SDR), /* SDR */ 4295 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_DDR), /* DDR */ 4296 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_QDR), /* QDR */ 4297 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2), /* DDR Gen2 */ 4298 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2), /* QDR Gen2 */ 4299 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_EN), /* EN 10GigE */ 4300 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2), /* EN 10GigE Gen2 */ 4301 /* MT25458 ConnectX EN 10GBASE-T */ 4302 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN), 4303 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2), /* Gen2 */ 4304 /* MT26468 ConnectX EN 10GigE PCIe Gen2*/ 4305 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2), 4306 /* MT26438 ConnectX EN 40GigE PCIe Gen2 5GT/s */ 4307 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2), 4308 /* MT26478 ConnectX2 40GigE PCIe Gen2 */ 4309 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX2), 4310 /* MT25400 Family [ConnectX-2] */ 4311 MLX_VF(0x1002), /* Virtual Function */ 4312 #endif /* CONFIG_MLX4_CORE_GEN2 */ 4313 /* MT27500 Family [ConnectX-3] */ 4314 MLX_GN(PCI_DEVICE_ID_MELLANOX_CONNECTX3), 4315 MLX_VF(0x1004), /* Virtual Function */ 4316 MLX_GN(0x1005), /* MT27510 Family */ 4317 MLX_GN(0x1006), /* MT27511 Family */ 4318 MLX_GN(PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO), /* MT27520 Family */ 4319 MLX_GN(0x1008), /* MT27521 Family */ 4320 MLX_GN(0x1009), /* MT27530 Family */ 4321 MLX_GN(0x100a), /* MT27531 Family */ 4322 MLX_GN(0x100b), /* MT27540 Family */ 4323 MLX_GN(0x100c), /* MT27541 Family */ 4324 MLX_GN(0x100d), /* MT27550 Family */ 4325 MLX_GN(0x100e), /* MT27551 Family */ 4326 MLX_GN(0x100f), /* MT27560 Family */ 4327 MLX_GN(0x1010), /* MT27561 Family */ 4328 4329 /* 4330 * See the mellanox_check_broken_intx_masking() quirk when 4331 * adding devices 4332 */ 4333 4334 { 0, } 4335 }; 4336 4337 MODULE_DEVICE_TABLE(pci, mlx4_pci_table); 4338 4339 static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev, 4340 pci_channel_state_t state) 4341 { 4342 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4343 struct mlx4_dev *dev = persist->dev; 4344 struct devlink *devlink; 4345 4346 mlx4_err(persist->dev, "mlx4_pci_err_detected was called\n"); 4347 mlx4_enter_error_state(persist); 4348 4349 devlink = priv_to_devlink(mlx4_priv(dev)); 4350 devl_lock(devlink); 4351 mutex_lock(&persist->interface_state_mutex); 4352 if (persist->interface_state & MLX4_INTERFACE_STATE_UP) 4353 mlx4_unload_one(pdev); 4354 4355 mutex_unlock(&persist->interface_state_mutex); 4356 devl_unlock(devlink); 4357 if (state == pci_channel_io_perm_failure) 4358 return PCI_ERS_RESULT_DISCONNECT; 4359 4360 mlx4_pci_disable_device(persist->dev); 4361 return PCI_ERS_RESULT_NEED_RESET; 4362 } 4363 4364 static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev) 4365 { 4366 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4367 struct mlx4_dev *dev = persist->dev; 4368 int err; 4369 4370 mlx4_err(dev, "mlx4_pci_slot_reset was called\n"); 4371 err = mlx4_pci_enable_device(dev); 4372 if (err) { 4373 mlx4_err(dev, "Can not re-enable device, err=%d\n", err); 4374 return PCI_ERS_RESULT_DISCONNECT; 4375 } 4376 4377 pci_set_master(pdev); 4378 pci_restore_state(pdev); 4379 pci_save_state(pdev); 4380 return PCI_ERS_RESULT_RECOVERED; 4381 } 4382 4383 static void mlx4_pci_resume(struct pci_dev *pdev) 4384 { 4385 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4386 struct mlx4_dev *dev = persist->dev; 4387 struct mlx4_priv *priv = mlx4_priv(dev); 4388 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0}; 4389 struct devlink *devlink; 4390 int total_vfs; 4391 int err; 4392 4393 mlx4_err(dev, "%s was called\n", __func__); 4394 total_vfs = dev->persist->num_vfs; 4395 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs)); 4396 4397 devlink = priv_to_devlink(priv); 4398 devl_lock(devlink); 4399 mutex_lock(&persist->interface_state_mutex); 4400 if (!(persist->interface_state & MLX4_INTERFACE_STATE_UP)) { 4401 err = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs, nvfs, 4402 priv, 1); 4403 if (err) { 4404 mlx4_err(dev, "%s: mlx4_load_one failed, err=%d\n", 4405 __func__, err); 4406 goto end; 4407 } 4408 4409 err = restore_current_port_types(dev, dev->persist-> 4410 curr_port_type, dev->persist-> 4411 curr_port_poss_type); 4412 if (err) 4413 mlx4_err(dev, "could not restore original port types (%d)\n", err); 4414 } 4415 end: 4416 mutex_unlock(&persist->interface_state_mutex); 4417 devl_unlock(devlink); 4418 } 4419 4420 static void mlx4_shutdown(struct pci_dev *pdev) 4421 { 4422 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4423 struct mlx4_dev *dev = persist->dev; 4424 struct devlink *devlink; 4425 4426 mlx4_info(persist->dev, "mlx4_shutdown was called\n"); 4427 devlink = priv_to_devlink(mlx4_priv(dev)); 4428 devl_lock(devlink); 4429 mutex_lock(&persist->interface_state_mutex); 4430 if (persist->interface_state & MLX4_INTERFACE_STATE_UP) 4431 mlx4_unload_one(pdev); 4432 mutex_unlock(&persist->interface_state_mutex); 4433 devl_unlock(devlink); 4434 mlx4_pci_disable_device(dev); 4435 } 4436 4437 static const struct pci_error_handlers mlx4_err_handler = { 4438 .error_detected = mlx4_pci_err_detected, 4439 .slot_reset = mlx4_pci_slot_reset, 4440 .resume = mlx4_pci_resume, 4441 }; 4442 4443 static int __maybe_unused mlx4_suspend(struct device *dev_d) 4444 { 4445 struct pci_dev *pdev = to_pci_dev(dev_d); 4446 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4447 struct mlx4_dev *dev = persist->dev; 4448 struct devlink *devlink; 4449 4450 mlx4_err(dev, "suspend was called\n"); 4451 devlink = priv_to_devlink(mlx4_priv(dev)); 4452 devl_lock(devlink); 4453 mutex_lock(&persist->interface_state_mutex); 4454 if (persist->interface_state & MLX4_INTERFACE_STATE_UP) 4455 mlx4_unload_one(pdev); 4456 mutex_unlock(&persist->interface_state_mutex); 4457 devl_unlock(devlink); 4458 4459 return 0; 4460 } 4461 4462 static int __maybe_unused mlx4_resume(struct device *dev_d) 4463 { 4464 struct pci_dev *pdev = to_pci_dev(dev_d); 4465 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4466 struct mlx4_dev *dev = persist->dev; 4467 struct mlx4_priv *priv = mlx4_priv(dev); 4468 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0}; 4469 struct devlink *devlink; 4470 int total_vfs; 4471 int ret = 0; 4472 4473 mlx4_err(dev, "resume was called\n"); 4474 total_vfs = dev->persist->num_vfs; 4475 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs)); 4476 4477 devlink = priv_to_devlink(priv); 4478 devl_lock(devlink); 4479 mutex_lock(&persist->interface_state_mutex); 4480 if (!(persist->interface_state & MLX4_INTERFACE_STATE_UP)) { 4481 ret = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs, 4482 nvfs, priv, 1); 4483 if (!ret) { 4484 ret = restore_current_port_types(dev, 4485 dev->persist->curr_port_type, 4486 dev->persist->curr_port_poss_type); 4487 if (ret) 4488 mlx4_err(dev, "resume: could not restore original port types (%d)\n", ret); 4489 } 4490 } 4491 mutex_unlock(&persist->interface_state_mutex); 4492 devl_unlock(devlink); 4493 4494 return ret; 4495 } 4496 4497 static SIMPLE_DEV_PM_OPS(mlx4_pm_ops, mlx4_suspend, mlx4_resume); 4498 4499 static struct pci_driver mlx4_driver = { 4500 .name = DRV_NAME, 4501 .id_table = mlx4_pci_table, 4502 .probe = mlx4_init_one, 4503 .shutdown = mlx4_shutdown, 4504 .remove = mlx4_remove_one, 4505 .driver.pm = &mlx4_pm_ops, 4506 .err_handler = &mlx4_err_handler, 4507 }; 4508 4509 static int __init mlx4_verify_params(void) 4510 { 4511 if (msi_x < 0) { 4512 pr_warn("mlx4_core: bad msi_x: %d\n", msi_x); 4513 return -1; 4514 } 4515 4516 if ((log_num_mac < 0) || (log_num_mac > 7)) { 4517 pr_warn("mlx4_core: bad num_mac: %d\n", log_num_mac); 4518 return -1; 4519 } 4520 4521 if (log_num_vlan != 0) 4522 pr_warn("mlx4_core: log_num_vlan - obsolete module param, using %d\n", 4523 MLX4_LOG_NUM_VLANS); 4524 4525 if (use_prio != 0) 4526 pr_warn("mlx4_core: use_prio - obsolete module param, ignored\n"); 4527 4528 if ((log_mtts_per_seg < 0) || (log_mtts_per_seg > 7)) { 4529 pr_warn("mlx4_core: bad log_mtts_per_seg: %d\n", 4530 log_mtts_per_seg); 4531 return -1; 4532 } 4533 4534 /* Check if module param for ports type has legal combination */ 4535 if (port_type_array[0] == false && port_type_array[1] == true) { 4536 pr_warn("Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n"); 4537 port_type_array[0] = true; 4538 } 4539 4540 if (mlx4_log_num_mgm_entry_size < -7 || 4541 (mlx4_log_num_mgm_entry_size > 0 && 4542 (mlx4_log_num_mgm_entry_size < MLX4_MIN_MGM_LOG_ENTRY_SIZE || 4543 mlx4_log_num_mgm_entry_size > MLX4_MAX_MGM_LOG_ENTRY_SIZE))) { 4544 pr_warn("mlx4_core: mlx4_log_num_mgm_entry_size (%d) not in legal range (-7..0 or %d..%d)\n", 4545 mlx4_log_num_mgm_entry_size, 4546 MLX4_MIN_MGM_LOG_ENTRY_SIZE, 4547 MLX4_MAX_MGM_LOG_ENTRY_SIZE); 4548 return -1; 4549 } 4550 4551 return 0; 4552 } 4553 4554 static int __init mlx4_init(void) 4555 { 4556 int ret; 4557 4558 WARN_ONCE(strcmp(MLX4_ADEV_NAME, KBUILD_MODNAME), 4559 "mlx4_core name not in sync with kernel module name"); 4560 4561 if (mlx4_verify_params()) 4562 return -EINVAL; 4563 4564 4565 mlx4_wq = create_singlethread_workqueue("mlx4"); 4566 if (!mlx4_wq) 4567 return -ENOMEM; 4568 4569 ret = pci_register_driver(&mlx4_driver); 4570 if (ret < 0) 4571 destroy_workqueue(mlx4_wq); 4572 return ret < 0 ? ret : 0; 4573 } 4574 4575 static void __exit mlx4_cleanup(void) 4576 { 4577 pci_unregister_driver(&mlx4_driver); 4578 destroy_workqueue(mlx4_wq); 4579 } 4580 4581 module_init(mlx4_init); 4582 module_exit(mlx4_cleanup); 4583