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/kmod.h> 46 #include <linux/etherdevice.h> 47 #include <net/devlink.h> 48 49 #include <uapi/rdma/mlx4-abi.h> 50 #include <linux/mlx4/device.h> 51 #include <linux/mlx4/doorbell.h> 52 53 #include "mlx4.h" 54 #include "fw.h" 55 #include "icm.h" 56 57 MODULE_AUTHOR("Roland Dreier"); 58 MODULE_DESCRIPTION("Mellanox ConnectX HCA low-level driver"); 59 MODULE_LICENSE("Dual BSD/GPL"); 60 MODULE_VERSION(DRV_VERSION); 61 62 struct workqueue_struct *mlx4_wq; 63 64 #ifdef CONFIG_MLX4_DEBUG 65 66 int mlx4_debug_level; /* 0 by default */ 67 module_param_named(debug_level, mlx4_debug_level, int, 0644); 68 MODULE_PARM_DESC(debug_level, "Enable debug tracing if > 0"); 69 70 #endif /* CONFIG_MLX4_DEBUG */ 71 72 #ifdef CONFIG_PCI_MSI 73 74 static int msi_x = 1; 75 module_param(msi_x, int, 0444); 76 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"); 77 78 #else /* CONFIG_PCI_MSI */ 79 80 #define msi_x (0) 81 82 #endif /* CONFIG_PCI_MSI */ 83 84 static uint8_t num_vfs[3] = {0, 0, 0}; 85 static int num_vfs_argc; 86 module_param_array(num_vfs, byte, &num_vfs_argc, 0444); 87 MODULE_PARM_DESC(num_vfs, "enable #num_vfs functions if num_vfs > 0\n" 88 "num_vfs=port1,port2,port1+2"); 89 90 static uint8_t probe_vf[3] = {0, 0, 0}; 91 static int probe_vfs_argc; 92 module_param_array(probe_vf, byte, &probe_vfs_argc, 0444); 93 MODULE_PARM_DESC(probe_vf, "number of vfs to probe by pf driver (num_vfs > 0)\n" 94 "probe_vf=port1,port2,port1+2"); 95 96 static int mlx4_log_num_mgm_entry_size = MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE; 97 module_param_named(log_num_mgm_entry_size, 98 mlx4_log_num_mgm_entry_size, int, 0444); 99 MODULE_PARM_DESC(log_num_mgm_entry_size, "log mgm size, that defines the num" 100 " of qp per mcg, for example:" 101 " 10 gives 248.range: 7 <=" 102 " log_num_mgm_entry_size <= 12." 103 " To activate device managed" 104 " flow steering when available, set to -1"); 105 106 static bool enable_64b_cqe_eqe = true; 107 module_param(enable_64b_cqe_eqe, bool, 0444); 108 MODULE_PARM_DESC(enable_64b_cqe_eqe, 109 "Enable 64 byte CQEs/EQEs when the FW supports this (default: True)"); 110 111 static bool enable_4k_uar; 112 module_param(enable_4k_uar, bool, 0444); 113 MODULE_PARM_DESC(enable_4k_uar, 114 "Enable using 4K UAR. Should not be enabled if have VFs which do not support 4K UARs (default: false)"); 115 116 #define PF_CONTEXT_BEHAVIOUR_MASK (MLX4_FUNC_CAP_64B_EQE_CQE | \ 117 MLX4_FUNC_CAP_EQE_CQE_STRIDE | \ 118 MLX4_FUNC_CAP_DMFS_A0_STATIC) 119 120 #define RESET_PERSIST_MASK_FLAGS (MLX4_FLAG_SRIOV) 121 122 static char mlx4_version[] = 123 DRV_NAME ": Mellanox ConnectX core driver v" 124 DRV_VERSION "\n"; 125 126 static const struct mlx4_profile default_profile = { 127 .num_qp = 1 << 18, 128 .num_srq = 1 << 16, 129 .rdmarc_per_qp = 1 << 4, 130 .num_cq = 1 << 16, 131 .num_mcg = 1 << 13, 132 .num_mpt = 1 << 19, 133 .num_mtt = 1 << 20, /* It is really num mtt segements */ 134 }; 135 136 static const struct mlx4_profile low_mem_profile = { 137 .num_qp = 1 << 17, 138 .num_srq = 1 << 6, 139 .rdmarc_per_qp = 1 << 4, 140 .num_cq = 1 << 8, 141 .num_mcg = 1 << 8, 142 .num_mpt = 1 << 9, 143 .num_mtt = 1 << 7, 144 }; 145 146 static int log_num_mac = 7; 147 module_param_named(log_num_mac, log_num_mac, int, 0444); 148 MODULE_PARM_DESC(log_num_mac, "Log2 max number of MACs per ETH port (1-7)"); 149 150 static int log_num_vlan; 151 module_param_named(log_num_vlan, log_num_vlan, int, 0444); 152 MODULE_PARM_DESC(log_num_vlan, "Log2 max number of VLANs per ETH port (0-7)"); 153 /* Log2 max number of VLANs per ETH port (0-7) */ 154 #define MLX4_LOG_NUM_VLANS 7 155 #define MLX4_MIN_LOG_NUM_VLANS 0 156 #define MLX4_MIN_LOG_NUM_MAC 1 157 158 static bool use_prio; 159 module_param_named(use_prio, use_prio, bool, 0444); 160 MODULE_PARM_DESC(use_prio, "Enable steering by VLAN priority on ETH ports (deprecated)"); 161 162 int log_mtts_per_seg = ilog2(1); 163 module_param_named(log_mtts_per_seg, log_mtts_per_seg, int, 0444); 164 MODULE_PARM_DESC(log_mtts_per_seg, "Log2 number of MTT entries per segment " 165 "(0-7) (default: 0)"); 166 167 static int port_type_array[2] = {MLX4_PORT_TYPE_NONE, MLX4_PORT_TYPE_NONE}; 168 static int arr_argc = 2; 169 module_param_array(port_type_array, int, &arr_argc, 0444); 170 MODULE_PARM_DESC(port_type_array, "Array of port types: HW_DEFAULT (0) is default " 171 "1 for IB, 2 for Ethernet"); 172 173 struct mlx4_port_config { 174 struct list_head list; 175 enum mlx4_port_type port_type[MLX4_MAX_PORTS + 1]; 176 struct pci_dev *pdev; 177 }; 178 179 static atomic_t pf_loading = ATOMIC_INIT(0); 180 181 static int mlx4_devlink_ierr_reset_get(struct devlink *devlink, u32 id, 182 struct devlink_param_gset_ctx *ctx) 183 { 184 ctx->val.vbool = !!mlx4_internal_err_reset; 185 return 0; 186 } 187 188 static int mlx4_devlink_ierr_reset_set(struct devlink *devlink, u32 id, 189 struct devlink_param_gset_ctx *ctx) 190 { 191 mlx4_internal_err_reset = ctx->val.vbool; 192 return 0; 193 } 194 195 static int mlx4_devlink_crdump_snapshot_get(struct devlink *devlink, u32 id, 196 struct devlink_param_gset_ctx *ctx) 197 { 198 struct mlx4_priv *priv = devlink_priv(devlink); 199 struct mlx4_dev *dev = &priv->dev; 200 201 ctx->val.vbool = dev->persist->crdump.snapshot_enable; 202 return 0; 203 } 204 205 static int mlx4_devlink_crdump_snapshot_set(struct devlink *devlink, u32 id, 206 struct devlink_param_gset_ctx *ctx) 207 { 208 struct mlx4_priv *priv = devlink_priv(devlink); 209 struct mlx4_dev *dev = &priv->dev; 210 211 dev->persist->crdump.snapshot_enable = ctx->val.vbool; 212 return 0; 213 } 214 215 static int 216 mlx4_devlink_max_macs_validate(struct devlink *devlink, u32 id, 217 union devlink_param_value val, 218 struct netlink_ext_ack *extack) 219 { 220 u32 value = val.vu32; 221 222 if (value < 1 || value > 128) 223 return -ERANGE; 224 225 if (!is_power_of_2(value)) { 226 NL_SET_ERR_MSG_MOD(extack, "max_macs supported must be power of 2"); 227 return -EINVAL; 228 } 229 230 return 0; 231 } 232 233 enum mlx4_devlink_param_id { 234 MLX4_DEVLINK_PARAM_ID_BASE = DEVLINK_PARAM_GENERIC_ID_MAX, 235 MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE, 236 MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR, 237 }; 238 239 static const struct devlink_param mlx4_devlink_params[] = { 240 DEVLINK_PARAM_GENERIC(INT_ERR_RESET, 241 BIT(DEVLINK_PARAM_CMODE_RUNTIME) | 242 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), 243 mlx4_devlink_ierr_reset_get, 244 mlx4_devlink_ierr_reset_set, NULL), 245 DEVLINK_PARAM_GENERIC(MAX_MACS, 246 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), 247 NULL, NULL, mlx4_devlink_max_macs_validate), 248 DEVLINK_PARAM_GENERIC(REGION_SNAPSHOT, 249 BIT(DEVLINK_PARAM_CMODE_RUNTIME) | 250 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), 251 mlx4_devlink_crdump_snapshot_get, 252 mlx4_devlink_crdump_snapshot_set, NULL), 253 DEVLINK_PARAM_DRIVER(MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE, 254 "enable_64b_cqe_eqe", DEVLINK_PARAM_TYPE_BOOL, 255 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), 256 NULL, NULL, NULL), 257 DEVLINK_PARAM_DRIVER(MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR, 258 "enable_4k_uar", DEVLINK_PARAM_TYPE_BOOL, 259 BIT(DEVLINK_PARAM_CMODE_DRIVERINIT), 260 NULL, NULL, NULL), 261 }; 262 263 static void mlx4_devlink_set_params_init_values(struct devlink *devlink) 264 { 265 union devlink_param_value value; 266 267 value.vbool = !!mlx4_internal_err_reset; 268 devlink_param_driverinit_value_set(devlink, 269 DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET, 270 value); 271 272 value.vu32 = 1UL << log_num_mac; 273 devlink_param_driverinit_value_set(devlink, 274 DEVLINK_PARAM_GENERIC_ID_MAX_MACS, 275 value); 276 277 value.vbool = enable_64b_cqe_eqe; 278 devlink_param_driverinit_value_set(devlink, 279 MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE, 280 value); 281 282 value.vbool = enable_4k_uar; 283 devlink_param_driverinit_value_set(devlink, 284 MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR, 285 value); 286 287 value.vbool = false; 288 devlink_param_driverinit_value_set(devlink, 289 DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT, 290 value); 291 } 292 293 static inline void mlx4_set_num_reserved_uars(struct mlx4_dev *dev, 294 struct mlx4_dev_cap *dev_cap) 295 { 296 /* The reserved_uars is calculated by system page size unit. 297 * Therefore, adjustment is added when the uar page size is less 298 * than the system page size 299 */ 300 dev->caps.reserved_uars = 301 max_t(int, 302 mlx4_get_num_reserved_uar(dev), 303 dev_cap->reserved_uars / 304 (1 << (PAGE_SHIFT - dev->uar_page_shift))); 305 } 306 307 int mlx4_check_port_params(struct mlx4_dev *dev, 308 enum mlx4_port_type *port_type) 309 { 310 int i; 311 312 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP)) { 313 for (i = 0; i < dev->caps.num_ports - 1; i++) { 314 if (port_type[i] != port_type[i + 1]) { 315 mlx4_err(dev, "Only same port types supported on this HCA, aborting\n"); 316 return -EOPNOTSUPP; 317 } 318 } 319 } 320 321 for (i = 0; i < dev->caps.num_ports; i++) { 322 if (!(port_type[i] & dev->caps.supported_type[i+1])) { 323 mlx4_err(dev, "Requested port type for port %d is not supported on this HCA\n", 324 i + 1); 325 return -EOPNOTSUPP; 326 } 327 } 328 return 0; 329 } 330 331 static void mlx4_set_port_mask(struct mlx4_dev *dev) 332 { 333 int i; 334 335 for (i = 1; i <= dev->caps.num_ports; ++i) 336 dev->caps.port_mask[i] = dev->caps.port_type[i]; 337 } 338 339 enum { 340 MLX4_QUERY_FUNC_NUM_SYS_EQS = 1 << 0, 341 }; 342 343 static int mlx4_query_func(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) 344 { 345 int err = 0; 346 struct mlx4_func func; 347 348 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) { 349 err = mlx4_QUERY_FUNC(dev, &func, 0); 350 if (err) { 351 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n"); 352 return err; 353 } 354 dev_cap->max_eqs = func.max_eq; 355 dev_cap->reserved_eqs = func.rsvd_eqs; 356 dev_cap->reserved_uars = func.rsvd_uars; 357 err |= MLX4_QUERY_FUNC_NUM_SYS_EQS; 358 } 359 return err; 360 } 361 362 static void mlx4_enable_cqe_eqe_stride(struct mlx4_dev *dev) 363 { 364 struct mlx4_caps *dev_cap = &dev->caps; 365 366 /* FW not supporting or cancelled by user */ 367 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_EQE_STRIDE) || 368 !(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_CQE_STRIDE)) 369 return; 370 371 /* Must have 64B CQE_EQE enabled by FW to use bigger stride 372 * When FW has NCSI it may decide not to report 64B CQE/EQEs 373 */ 374 if (!(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_EQE) || 375 !(dev_cap->flags & MLX4_DEV_CAP_FLAG_64B_CQE)) { 376 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE; 377 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE; 378 return; 379 } 380 381 if (cache_line_size() == 128 || cache_line_size() == 256) { 382 mlx4_dbg(dev, "Enabling CQE stride cacheLine supported\n"); 383 /* Changing the real data inside CQE size to 32B */ 384 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_CQE; 385 dev_cap->flags &= ~MLX4_DEV_CAP_FLAG_64B_EQE; 386 387 if (mlx4_is_master(dev)) 388 dev_cap->function_caps |= MLX4_FUNC_CAP_EQE_CQE_STRIDE; 389 } else { 390 if (cache_line_size() != 32 && cache_line_size() != 64) 391 mlx4_dbg(dev, "Disabling CQE stride, cacheLine size unsupported\n"); 392 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_CQE_STRIDE; 393 dev_cap->flags2 &= ~MLX4_DEV_CAP_FLAG2_EQE_STRIDE; 394 } 395 } 396 397 static int _mlx4_dev_port(struct mlx4_dev *dev, int port, 398 struct mlx4_port_cap *port_cap) 399 { 400 dev->caps.vl_cap[port] = port_cap->max_vl; 401 dev->caps.ib_mtu_cap[port] = port_cap->ib_mtu; 402 dev->phys_caps.gid_phys_table_len[port] = port_cap->max_gids; 403 dev->phys_caps.pkey_phys_table_len[port] = port_cap->max_pkeys; 404 /* set gid and pkey table operating lengths by default 405 * to non-sriov values 406 */ 407 dev->caps.gid_table_len[port] = port_cap->max_gids; 408 dev->caps.pkey_table_len[port] = port_cap->max_pkeys; 409 dev->caps.port_width_cap[port] = port_cap->max_port_width; 410 dev->caps.eth_mtu_cap[port] = port_cap->eth_mtu; 411 dev->caps.max_tc_eth = port_cap->max_tc_eth; 412 dev->caps.def_mac[port] = port_cap->def_mac; 413 dev->caps.supported_type[port] = port_cap->supported_port_types; 414 dev->caps.suggested_type[port] = port_cap->suggested_type; 415 dev->caps.default_sense[port] = port_cap->default_sense; 416 dev->caps.trans_type[port] = port_cap->trans_type; 417 dev->caps.vendor_oui[port] = port_cap->vendor_oui; 418 dev->caps.wavelength[port] = port_cap->wavelength; 419 dev->caps.trans_code[port] = port_cap->trans_code; 420 421 return 0; 422 } 423 424 static int mlx4_dev_port(struct mlx4_dev *dev, int port, 425 struct mlx4_port_cap *port_cap) 426 { 427 int err = 0; 428 429 err = mlx4_QUERY_PORT(dev, port, port_cap); 430 431 if (err) 432 mlx4_err(dev, "QUERY_PORT command failed.\n"); 433 434 return err; 435 } 436 437 static inline void mlx4_enable_ignore_fcs(struct mlx4_dev *dev) 438 { 439 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_IGNORE_FCS)) 440 return; 441 442 if (mlx4_is_mfunc(dev)) { 443 mlx4_dbg(dev, "SRIOV mode - Disabling Ignore FCS"); 444 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS; 445 return; 446 } 447 448 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_FCS_KEEP)) { 449 mlx4_dbg(dev, 450 "Keep FCS is not supported - Disabling Ignore FCS"); 451 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_IGNORE_FCS; 452 return; 453 } 454 } 455 456 #define MLX4_A0_STEERING_TABLE_SIZE 256 457 static int mlx4_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap) 458 { 459 int err; 460 int i; 461 462 err = mlx4_QUERY_DEV_CAP(dev, dev_cap); 463 if (err) { 464 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n"); 465 return err; 466 } 467 mlx4_dev_cap_dump(dev, dev_cap); 468 469 if (dev_cap->min_page_sz > PAGE_SIZE) { 470 mlx4_err(dev, "HCA minimum page size of %d bigger than kernel PAGE_SIZE of %ld, aborting\n", 471 dev_cap->min_page_sz, PAGE_SIZE); 472 return -ENODEV; 473 } 474 if (dev_cap->num_ports > MLX4_MAX_PORTS) { 475 mlx4_err(dev, "HCA has %d ports, but we only support %d, aborting\n", 476 dev_cap->num_ports, MLX4_MAX_PORTS); 477 return -ENODEV; 478 } 479 480 if (dev_cap->uar_size > pci_resource_len(dev->persist->pdev, 2)) { 481 mlx4_err(dev, "HCA reported UAR size of 0x%x bigger than PCI resource 2 size of 0x%llx, aborting\n", 482 dev_cap->uar_size, 483 (unsigned long long) 484 pci_resource_len(dev->persist->pdev, 2)); 485 return -ENODEV; 486 } 487 488 dev->caps.num_ports = dev_cap->num_ports; 489 dev->caps.num_sys_eqs = dev_cap->num_sys_eqs; 490 dev->phys_caps.num_phys_eqs = dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS ? 491 dev->caps.num_sys_eqs : 492 MLX4_MAX_EQ_NUM; 493 for (i = 1; i <= dev->caps.num_ports; ++i) { 494 err = _mlx4_dev_port(dev, i, dev_cap->port_cap + i); 495 if (err) { 496 mlx4_err(dev, "QUERY_PORT command failed, aborting\n"); 497 return err; 498 } 499 } 500 501 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 = NULL; 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 = NULL; 911 struct mlx4_func_cap *func_cap = NULL; 912 struct mlx4_init_hca_param *hca_param = NULL; 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 static void mlx4_request_modules(struct mlx4_dev *dev) 1094 { 1095 int port; 1096 int has_ib_port = false; 1097 int has_eth_port = false; 1098 #define EN_DRV_NAME "mlx4_en" 1099 #define IB_DRV_NAME "mlx4_ib" 1100 1101 for (port = 1; port <= dev->caps.num_ports; port++) { 1102 if (dev->caps.port_type[port] == MLX4_PORT_TYPE_IB) 1103 has_ib_port = true; 1104 else if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH) 1105 has_eth_port = true; 1106 } 1107 1108 if (has_eth_port) 1109 request_module_nowait(EN_DRV_NAME); 1110 if (has_ib_port || (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)) 1111 request_module_nowait(IB_DRV_NAME); 1112 } 1113 1114 /* 1115 * Change the port configuration of the device. 1116 * Every user of this function must hold the port mutex. 1117 */ 1118 int mlx4_change_port_types(struct mlx4_dev *dev, 1119 enum mlx4_port_type *port_types) 1120 { 1121 int err = 0; 1122 int change = 0; 1123 int port; 1124 1125 for (port = 0; port < dev->caps.num_ports; port++) { 1126 /* Change the port type only if the new type is different 1127 * from the current, and not set to Auto */ 1128 if (port_types[port] != dev->caps.port_type[port + 1]) 1129 change = 1; 1130 } 1131 if (change) { 1132 mlx4_unregister_device(dev); 1133 for (port = 1; port <= dev->caps.num_ports; port++) { 1134 mlx4_CLOSE_PORT(dev, port); 1135 dev->caps.port_type[port] = port_types[port - 1]; 1136 err = mlx4_SET_PORT(dev, port, -1); 1137 if (err) { 1138 mlx4_err(dev, "Failed to set port %d, aborting\n", 1139 port); 1140 goto out; 1141 } 1142 } 1143 mlx4_set_port_mask(dev); 1144 err = mlx4_register_device(dev); 1145 if (err) { 1146 mlx4_err(dev, "Failed to register device\n"); 1147 goto out; 1148 } 1149 mlx4_request_modules(dev); 1150 } 1151 1152 out: 1153 return err; 1154 } 1155 1156 static ssize_t show_port_type(struct device *dev, 1157 struct device_attribute *attr, 1158 char *buf) 1159 { 1160 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info, 1161 port_attr); 1162 struct mlx4_dev *mdev = info->dev; 1163 char type[8]; 1164 1165 sprintf(type, "%s", 1166 (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_IB) ? 1167 "ib" : "eth"); 1168 if (mdev->caps.possible_type[info->port] == MLX4_PORT_TYPE_AUTO) 1169 sprintf(buf, "auto (%s)\n", type); 1170 else 1171 sprintf(buf, "%s\n", type); 1172 1173 return strlen(buf); 1174 } 1175 1176 static int __set_port_type(struct mlx4_port_info *info, 1177 enum mlx4_port_type port_type) 1178 { 1179 struct mlx4_dev *mdev = info->dev; 1180 struct mlx4_priv *priv = mlx4_priv(mdev); 1181 enum mlx4_port_type types[MLX4_MAX_PORTS]; 1182 enum mlx4_port_type new_types[MLX4_MAX_PORTS]; 1183 int i; 1184 int err = 0; 1185 1186 if ((port_type & mdev->caps.supported_type[info->port]) != port_type) { 1187 mlx4_err(mdev, 1188 "Requested port type for port %d is not supported on this HCA\n", 1189 info->port); 1190 return -EOPNOTSUPP; 1191 } 1192 1193 mlx4_stop_sense(mdev); 1194 mutex_lock(&priv->port_mutex); 1195 info->tmp_type = port_type; 1196 1197 /* Possible type is always the one that was delivered */ 1198 mdev->caps.possible_type[info->port] = info->tmp_type; 1199 1200 for (i = 0; i < mdev->caps.num_ports; i++) { 1201 types[i] = priv->port[i+1].tmp_type ? priv->port[i+1].tmp_type : 1202 mdev->caps.possible_type[i+1]; 1203 if (types[i] == MLX4_PORT_TYPE_AUTO) 1204 types[i] = mdev->caps.port_type[i+1]; 1205 } 1206 1207 if (!(mdev->caps.flags & MLX4_DEV_CAP_FLAG_DPDP) && 1208 !(mdev->caps.flags & MLX4_DEV_CAP_FLAG_SENSE_SUPPORT)) { 1209 for (i = 1; i <= mdev->caps.num_ports; i++) { 1210 if (mdev->caps.possible_type[i] == MLX4_PORT_TYPE_AUTO) { 1211 mdev->caps.possible_type[i] = mdev->caps.port_type[i]; 1212 err = -EOPNOTSUPP; 1213 } 1214 } 1215 } 1216 if (err) { 1217 mlx4_err(mdev, "Auto sensing is not supported on this HCA. Set only 'eth' or 'ib' for both ports (should be the same)\n"); 1218 goto out; 1219 } 1220 1221 mlx4_do_sense_ports(mdev, new_types, types); 1222 1223 err = mlx4_check_port_params(mdev, new_types); 1224 if (err) 1225 goto out; 1226 1227 /* We are about to apply the changes after the configuration 1228 * was verified, no need to remember the temporary types 1229 * any more */ 1230 for (i = 0; i < mdev->caps.num_ports; i++) 1231 priv->port[i + 1].tmp_type = 0; 1232 1233 err = mlx4_change_port_types(mdev, new_types); 1234 1235 out: 1236 mlx4_start_sense(mdev); 1237 mutex_unlock(&priv->port_mutex); 1238 1239 return err; 1240 } 1241 1242 static ssize_t set_port_type(struct device *dev, 1243 struct device_attribute *attr, 1244 const char *buf, size_t count) 1245 { 1246 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info, 1247 port_attr); 1248 struct mlx4_dev *mdev = info->dev; 1249 enum mlx4_port_type port_type; 1250 static DEFINE_MUTEX(set_port_type_mutex); 1251 int err; 1252 1253 mutex_lock(&set_port_type_mutex); 1254 1255 if (!strcmp(buf, "ib\n")) { 1256 port_type = MLX4_PORT_TYPE_IB; 1257 } else if (!strcmp(buf, "eth\n")) { 1258 port_type = MLX4_PORT_TYPE_ETH; 1259 } else if (!strcmp(buf, "auto\n")) { 1260 port_type = MLX4_PORT_TYPE_AUTO; 1261 } else { 1262 mlx4_err(mdev, "%s is not supported port type\n", buf); 1263 err = -EINVAL; 1264 goto err_out; 1265 } 1266 1267 err = __set_port_type(info, port_type); 1268 1269 err_out: 1270 mutex_unlock(&set_port_type_mutex); 1271 1272 return err ? err : count; 1273 } 1274 1275 enum ibta_mtu { 1276 IB_MTU_256 = 1, 1277 IB_MTU_512 = 2, 1278 IB_MTU_1024 = 3, 1279 IB_MTU_2048 = 4, 1280 IB_MTU_4096 = 5 1281 }; 1282 1283 static inline int int_to_ibta_mtu(int mtu) 1284 { 1285 switch (mtu) { 1286 case 256: return IB_MTU_256; 1287 case 512: return IB_MTU_512; 1288 case 1024: return IB_MTU_1024; 1289 case 2048: return IB_MTU_2048; 1290 case 4096: return IB_MTU_4096; 1291 default: return -1; 1292 } 1293 } 1294 1295 static inline int ibta_mtu_to_int(enum ibta_mtu mtu) 1296 { 1297 switch (mtu) { 1298 case IB_MTU_256: return 256; 1299 case IB_MTU_512: return 512; 1300 case IB_MTU_1024: return 1024; 1301 case IB_MTU_2048: return 2048; 1302 case IB_MTU_4096: return 4096; 1303 default: return -1; 1304 } 1305 } 1306 1307 static ssize_t show_port_ib_mtu(struct device *dev, 1308 struct device_attribute *attr, 1309 char *buf) 1310 { 1311 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info, 1312 port_mtu_attr); 1313 struct mlx4_dev *mdev = info->dev; 1314 1315 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) 1316 mlx4_warn(mdev, "port level mtu is only used for IB ports\n"); 1317 1318 sprintf(buf, "%d\n", 1319 ibta_mtu_to_int(mdev->caps.port_ib_mtu[info->port])); 1320 return strlen(buf); 1321 } 1322 1323 static ssize_t set_port_ib_mtu(struct device *dev, 1324 struct device_attribute *attr, 1325 const char *buf, size_t count) 1326 { 1327 struct mlx4_port_info *info = container_of(attr, struct mlx4_port_info, 1328 port_mtu_attr); 1329 struct mlx4_dev *mdev = info->dev; 1330 struct mlx4_priv *priv = mlx4_priv(mdev); 1331 int err, port, mtu, ibta_mtu = -1; 1332 1333 if (mdev->caps.port_type[info->port] == MLX4_PORT_TYPE_ETH) { 1334 mlx4_warn(mdev, "port level mtu is only used for IB ports\n"); 1335 return -EINVAL; 1336 } 1337 1338 err = kstrtoint(buf, 0, &mtu); 1339 if (!err) 1340 ibta_mtu = int_to_ibta_mtu(mtu); 1341 1342 if (err || ibta_mtu < 0) { 1343 mlx4_err(mdev, "%s is invalid IBTA mtu\n", buf); 1344 return -EINVAL; 1345 } 1346 1347 mdev->caps.port_ib_mtu[info->port] = ibta_mtu; 1348 1349 mlx4_stop_sense(mdev); 1350 mutex_lock(&priv->port_mutex); 1351 mlx4_unregister_device(mdev); 1352 for (port = 1; port <= mdev->caps.num_ports; port++) { 1353 mlx4_CLOSE_PORT(mdev, port); 1354 err = mlx4_SET_PORT(mdev, port, -1); 1355 if (err) { 1356 mlx4_err(mdev, "Failed to set port %d, aborting\n", 1357 port); 1358 goto err_set_port; 1359 } 1360 } 1361 err = mlx4_register_device(mdev); 1362 err_set_port: 1363 mutex_unlock(&priv->port_mutex); 1364 mlx4_start_sense(mdev); 1365 return err ? err : count; 1366 } 1367 1368 /* bond for multi-function device */ 1369 #define MAX_MF_BOND_ALLOWED_SLAVES 63 1370 static int mlx4_mf_bond(struct mlx4_dev *dev) 1371 { 1372 int err = 0; 1373 int nvfs; 1374 struct mlx4_slaves_pport slaves_port1; 1375 struct mlx4_slaves_pport slaves_port2; 1376 DECLARE_BITMAP(slaves_port_1_2, MLX4_MFUNC_MAX); 1377 1378 slaves_port1 = mlx4_phys_to_slaves_pport(dev, 1); 1379 slaves_port2 = mlx4_phys_to_slaves_pport(dev, 2); 1380 bitmap_and(slaves_port_1_2, 1381 slaves_port1.slaves, slaves_port2.slaves, 1382 dev->persist->num_vfs + 1); 1383 1384 /* only single port vfs are allowed */ 1385 if (bitmap_weight(slaves_port_1_2, dev->persist->num_vfs + 1) > 1) { 1386 mlx4_warn(dev, "HA mode unsupported for dual ported VFs\n"); 1387 return -EINVAL; 1388 } 1389 1390 /* number of virtual functions is number of total functions minus one 1391 * physical function for each port. 1392 */ 1393 nvfs = bitmap_weight(slaves_port1.slaves, dev->persist->num_vfs + 1) + 1394 bitmap_weight(slaves_port2.slaves, dev->persist->num_vfs + 1) - 2; 1395 1396 /* limit on maximum allowed VFs */ 1397 if (nvfs > MAX_MF_BOND_ALLOWED_SLAVES) { 1398 mlx4_warn(dev, "HA mode is not supported for %d VFs (max %d are allowed)\n", 1399 nvfs, MAX_MF_BOND_ALLOWED_SLAVES); 1400 return -EINVAL; 1401 } 1402 1403 if (dev->caps.steering_mode != MLX4_STEERING_MODE_DEVICE_MANAGED) { 1404 mlx4_warn(dev, "HA mode unsupported for NON DMFS steering\n"); 1405 return -EINVAL; 1406 } 1407 1408 err = mlx4_bond_mac_table(dev); 1409 if (err) 1410 return err; 1411 err = mlx4_bond_vlan_table(dev); 1412 if (err) 1413 goto err1; 1414 err = mlx4_bond_fs_rules(dev); 1415 if (err) 1416 goto err2; 1417 1418 return 0; 1419 err2: 1420 (void)mlx4_unbond_vlan_table(dev); 1421 err1: 1422 (void)mlx4_unbond_mac_table(dev); 1423 return err; 1424 } 1425 1426 static int mlx4_mf_unbond(struct mlx4_dev *dev) 1427 { 1428 int ret, ret1; 1429 1430 ret = mlx4_unbond_fs_rules(dev); 1431 if (ret) 1432 mlx4_warn(dev, "multifunction unbond for flow rules failed (%d)\n", ret); 1433 ret1 = mlx4_unbond_mac_table(dev); 1434 if (ret1) { 1435 mlx4_warn(dev, "multifunction unbond for MAC table failed (%d)\n", ret1); 1436 ret = ret1; 1437 } 1438 ret1 = mlx4_unbond_vlan_table(dev); 1439 if (ret1) { 1440 mlx4_warn(dev, "multifunction unbond for VLAN table failed (%d)\n", ret1); 1441 ret = ret1; 1442 } 1443 return ret; 1444 } 1445 1446 int mlx4_bond(struct mlx4_dev *dev) 1447 { 1448 int ret = 0; 1449 struct mlx4_priv *priv = mlx4_priv(dev); 1450 1451 mutex_lock(&priv->bond_mutex); 1452 1453 if (!mlx4_is_bonded(dev)) { 1454 ret = mlx4_do_bond(dev, true); 1455 if (ret) 1456 mlx4_err(dev, "Failed to bond device: %d\n", ret); 1457 if (!ret && mlx4_is_master(dev)) { 1458 ret = mlx4_mf_bond(dev); 1459 if (ret) { 1460 mlx4_err(dev, "bond for multifunction failed\n"); 1461 mlx4_do_bond(dev, false); 1462 } 1463 } 1464 } 1465 1466 mutex_unlock(&priv->bond_mutex); 1467 if (!ret) 1468 mlx4_dbg(dev, "Device is bonded\n"); 1469 1470 return ret; 1471 } 1472 EXPORT_SYMBOL_GPL(mlx4_bond); 1473 1474 int mlx4_unbond(struct mlx4_dev *dev) 1475 { 1476 int ret = 0; 1477 struct mlx4_priv *priv = mlx4_priv(dev); 1478 1479 mutex_lock(&priv->bond_mutex); 1480 1481 if (mlx4_is_bonded(dev)) { 1482 int ret2 = 0; 1483 1484 ret = mlx4_do_bond(dev, false); 1485 if (ret) 1486 mlx4_err(dev, "Failed to unbond device: %d\n", ret); 1487 if (mlx4_is_master(dev)) 1488 ret2 = mlx4_mf_unbond(dev); 1489 if (ret2) { 1490 mlx4_warn(dev, "Failed to unbond device for multifunction (%d)\n", ret2); 1491 ret = ret2; 1492 } 1493 } 1494 1495 mutex_unlock(&priv->bond_mutex); 1496 if (!ret) 1497 mlx4_dbg(dev, "Device is unbonded\n"); 1498 1499 return ret; 1500 } 1501 EXPORT_SYMBOL_GPL(mlx4_unbond); 1502 1503 1504 int mlx4_port_map_set(struct mlx4_dev *dev, struct mlx4_port_map *v2p) 1505 { 1506 u8 port1 = v2p->port1; 1507 u8 port2 = v2p->port2; 1508 struct mlx4_priv *priv = mlx4_priv(dev); 1509 int err; 1510 1511 if (!(dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_PORT_REMAP)) 1512 return -EOPNOTSUPP; 1513 1514 mutex_lock(&priv->bond_mutex); 1515 1516 /* zero means keep current mapping for this port */ 1517 if (port1 == 0) 1518 port1 = priv->v2p.port1; 1519 if (port2 == 0) 1520 port2 = priv->v2p.port2; 1521 1522 if ((port1 < 1) || (port1 > MLX4_MAX_PORTS) || 1523 (port2 < 1) || (port2 > MLX4_MAX_PORTS) || 1524 (port1 == 2 && port2 == 1)) { 1525 /* besides boundary checks cross mapping makes 1526 * no sense and therefore not allowed */ 1527 err = -EINVAL; 1528 } else if ((port1 == priv->v2p.port1) && 1529 (port2 == priv->v2p.port2)) { 1530 err = 0; 1531 } else { 1532 err = mlx4_virt2phy_port_map(dev, port1, port2); 1533 if (!err) { 1534 mlx4_dbg(dev, "port map changed: [%d][%d]\n", 1535 port1, port2); 1536 priv->v2p.port1 = port1; 1537 priv->v2p.port2 = port2; 1538 } else { 1539 mlx4_err(dev, "Failed to change port mape: %d\n", err); 1540 } 1541 } 1542 1543 mutex_unlock(&priv->bond_mutex); 1544 return err; 1545 } 1546 EXPORT_SYMBOL_GPL(mlx4_port_map_set); 1547 1548 static int mlx4_load_fw(struct mlx4_dev *dev) 1549 { 1550 struct mlx4_priv *priv = mlx4_priv(dev); 1551 int err; 1552 1553 priv->fw.fw_icm = mlx4_alloc_icm(dev, priv->fw.fw_pages, 1554 GFP_HIGHUSER | __GFP_NOWARN, 0); 1555 if (!priv->fw.fw_icm) { 1556 mlx4_err(dev, "Couldn't allocate FW area, aborting\n"); 1557 return -ENOMEM; 1558 } 1559 1560 err = mlx4_MAP_FA(dev, priv->fw.fw_icm); 1561 if (err) { 1562 mlx4_err(dev, "MAP_FA command failed, aborting\n"); 1563 goto err_free; 1564 } 1565 1566 err = mlx4_RUN_FW(dev); 1567 if (err) { 1568 mlx4_err(dev, "RUN_FW command failed, aborting\n"); 1569 goto err_unmap_fa; 1570 } 1571 1572 return 0; 1573 1574 err_unmap_fa: 1575 mlx4_UNMAP_FA(dev); 1576 1577 err_free: 1578 mlx4_free_icm(dev, priv->fw.fw_icm, 0); 1579 return err; 1580 } 1581 1582 static int mlx4_init_cmpt_table(struct mlx4_dev *dev, u64 cmpt_base, 1583 int cmpt_entry_sz) 1584 { 1585 struct mlx4_priv *priv = mlx4_priv(dev); 1586 int err; 1587 int num_eqs; 1588 1589 err = mlx4_init_icm_table(dev, &priv->qp_table.cmpt_table, 1590 cmpt_base + 1591 ((u64) (MLX4_CMPT_TYPE_QP * 1592 cmpt_entry_sz) << MLX4_CMPT_SHIFT), 1593 cmpt_entry_sz, dev->caps.num_qps, 1594 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 1595 0, 0); 1596 if (err) 1597 goto err; 1598 1599 err = mlx4_init_icm_table(dev, &priv->srq_table.cmpt_table, 1600 cmpt_base + 1601 ((u64) (MLX4_CMPT_TYPE_SRQ * 1602 cmpt_entry_sz) << MLX4_CMPT_SHIFT), 1603 cmpt_entry_sz, dev->caps.num_srqs, 1604 dev->caps.reserved_srqs, 0, 0); 1605 if (err) 1606 goto err_qp; 1607 1608 err = mlx4_init_icm_table(dev, &priv->cq_table.cmpt_table, 1609 cmpt_base + 1610 ((u64) (MLX4_CMPT_TYPE_CQ * 1611 cmpt_entry_sz) << MLX4_CMPT_SHIFT), 1612 cmpt_entry_sz, dev->caps.num_cqs, 1613 dev->caps.reserved_cqs, 0, 0); 1614 if (err) 1615 goto err_srq; 1616 1617 num_eqs = dev->phys_caps.num_phys_eqs; 1618 err = mlx4_init_icm_table(dev, &priv->eq_table.cmpt_table, 1619 cmpt_base + 1620 ((u64) (MLX4_CMPT_TYPE_EQ * 1621 cmpt_entry_sz) << MLX4_CMPT_SHIFT), 1622 cmpt_entry_sz, num_eqs, num_eqs, 0, 0); 1623 if (err) 1624 goto err_cq; 1625 1626 return 0; 1627 1628 err_cq: 1629 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table); 1630 1631 err_srq: 1632 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table); 1633 1634 err_qp: 1635 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table); 1636 1637 err: 1638 return err; 1639 } 1640 1641 static int mlx4_init_icm(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap, 1642 struct mlx4_init_hca_param *init_hca, u64 icm_size) 1643 { 1644 struct mlx4_priv *priv = mlx4_priv(dev); 1645 u64 aux_pages; 1646 int num_eqs; 1647 int err; 1648 1649 err = mlx4_SET_ICM_SIZE(dev, icm_size, &aux_pages); 1650 if (err) { 1651 mlx4_err(dev, "SET_ICM_SIZE command failed, aborting\n"); 1652 return err; 1653 } 1654 1655 mlx4_dbg(dev, "%lld KB of HCA context requires %lld KB aux memory\n", 1656 (unsigned long long) icm_size >> 10, 1657 (unsigned long long) aux_pages << 2); 1658 1659 priv->fw.aux_icm = mlx4_alloc_icm(dev, aux_pages, 1660 GFP_HIGHUSER | __GFP_NOWARN, 0); 1661 if (!priv->fw.aux_icm) { 1662 mlx4_err(dev, "Couldn't allocate aux memory, aborting\n"); 1663 return -ENOMEM; 1664 } 1665 1666 err = mlx4_MAP_ICM_AUX(dev, priv->fw.aux_icm); 1667 if (err) { 1668 mlx4_err(dev, "MAP_ICM_AUX command failed, aborting\n"); 1669 goto err_free_aux; 1670 } 1671 1672 err = mlx4_init_cmpt_table(dev, init_hca->cmpt_base, dev_cap->cmpt_entry_sz); 1673 if (err) { 1674 mlx4_err(dev, "Failed to map cMPT context memory, aborting\n"); 1675 goto err_unmap_aux; 1676 } 1677 1678 1679 num_eqs = dev->phys_caps.num_phys_eqs; 1680 err = mlx4_init_icm_table(dev, &priv->eq_table.table, 1681 init_hca->eqc_base, dev_cap->eqc_entry_sz, 1682 num_eqs, num_eqs, 0, 0); 1683 if (err) { 1684 mlx4_err(dev, "Failed to map EQ context memory, aborting\n"); 1685 goto err_unmap_cmpt; 1686 } 1687 1688 /* 1689 * Reserved MTT entries must be aligned up to a cacheline 1690 * boundary, since the FW will write to them, while the driver 1691 * writes to all other MTT entries. (The variable 1692 * dev->caps.mtt_entry_sz below is really the MTT segment 1693 * size, not the raw entry size) 1694 */ 1695 dev->caps.reserved_mtts = 1696 ALIGN(dev->caps.reserved_mtts * dev->caps.mtt_entry_sz, 1697 dma_get_cache_alignment()) / dev->caps.mtt_entry_sz; 1698 1699 err = mlx4_init_icm_table(dev, &priv->mr_table.mtt_table, 1700 init_hca->mtt_base, 1701 dev->caps.mtt_entry_sz, 1702 dev->caps.num_mtts, 1703 dev->caps.reserved_mtts, 1, 0); 1704 if (err) { 1705 mlx4_err(dev, "Failed to map MTT context memory, aborting\n"); 1706 goto err_unmap_eq; 1707 } 1708 1709 err = mlx4_init_icm_table(dev, &priv->mr_table.dmpt_table, 1710 init_hca->dmpt_base, 1711 dev_cap->dmpt_entry_sz, 1712 dev->caps.num_mpts, 1713 dev->caps.reserved_mrws, 1, 1); 1714 if (err) { 1715 mlx4_err(dev, "Failed to map dMPT context memory, aborting\n"); 1716 goto err_unmap_mtt; 1717 } 1718 1719 err = mlx4_init_icm_table(dev, &priv->qp_table.qp_table, 1720 init_hca->qpc_base, 1721 dev_cap->qpc_entry_sz, 1722 dev->caps.num_qps, 1723 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 1724 0, 0); 1725 if (err) { 1726 mlx4_err(dev, "Failed to map QP context memory, aborting\n"); 1727 goto err_unmap_dmpt; 1728 } 1729 1730 err = mlx4_init_icm_table(dev, &priv->qp_table.auxc_table, 1731 init_hca->auxc_base, 1732 dev_cap->aux_entry_sz, 1733 dev->caps.num_qps, 1734 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 1735 0, 0); 1736 if (err) { 1737 mlx4_err(dev, "Failed to map AUXC context memory, aborting\n"); 1738 goto err_unmap_qp; 1739 } 1740 1741 err = mlx4_init_icm_table(dev, &priv->qp_table.altc_table, 1742 init_hca->altc_base, 1743 dev_cap->altc_entry_sz, 1744 dev->caps.num_qps, 1745 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 1746 0, 0); 1747 if (err) { 1748 mlx4_err(dev, "Failed to map ALTC context memory, aborting\n"); 1749 goto err_unmap_auxc; 1750 } 1751 1752 err = mlx4_init_icm_table(dev, &priv->qp_table.rdmarc_table, 1753 init_hca->rdmarc_base, 1754 dev_cap->rdmarc_entry_sz << priv->qp_table.rdmarc_shift, 1755 dev->caps.num_qps, 1756 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW], 1757 0, 0); 1758 if (err) { 1759 mlx4_err(dev, "Failed to map RDMARC context memory, aborting\n"); 1760 goto err_unmap_altc; 1761 } 1762 1763 err = mlx4_init_icm_table(dev, &priv->cq_table.table, 1764 init_hca->cqc_base, 1765 dev_cap->cqc_entry_sz, 1766 dev->caps.num_cqs, 1767 dev->caps.reserved_cqs, 0, 0); 1768 if (err) { 1769 mlx4_err(dev, "Failed to map CQ context memory, aborting\n"); 1770 goto err_unmap_rdmarc; 1771 } 1772 1773 err = mlx4_init_icm_table(dev, &priv->srq_table.table, 1774 init_hca->srqc_base, 1775 dev_cap->srq_entry_sz, 1776 dev->caps.num_srqs, 1777 dev->caps.reserved_srqs, 0, 0); 1778 if (err) { 1779 mlx4_err(dev, "Failed to map SRQ context memory, aborting\n"); 1780 goto err_unmap_cq; 1781 } 1782 1783 /* 1784 * For flow steering device managed mode it is required to use 1785 * mlx4_init_icm_table. For B0 steering mode it's not strictly 1786 * required, but for simplicity just map the whole multicast 1787 * group table now. The table isn't very big and it's a lot 1788 * easier than trying to track ref counts. 1789 */ 1790 err = mlx4_init_icm_table(dev, &priv->mcg_table.table, 1791 init_hca->mc_base, 1792 mlx4_get_mgm_entry_size(dev), 1793 dev->caps.num_mgms + dev->caps.num_amgms, 1794 dev->caps.num_mgms + dev->caps.num_amgms, 1795 0, 0); 1796 if (err) { 1797 mlx4_err(dev, "Failed to map MCG context memory, aborting\n"); 1798 goto err_unmap_srq; 1799 } 1800 1801 return 0; 1802 1803 err_unmap_srq: 1804 mlx4_cleanup_icm_table(dev, &priv->srq_table.table); 1805 1806 err_unmap_cq: 1807 mlx4_cleanup_icm_table(dev, &priv->cq_table.table); 1808 1809 err_unmap_rdmarc: 1810 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table); 1811 1812 err_unmap_altc: 1813 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table); 1814 1815 err_unmap_auxc: 1816 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table); 1817 1818 err_unmap_qp: 1819 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table); 1820 1821 err_unmap_dmpt: 1822 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table); 1823 1824 err_unmap_mtt: 1825 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table); 1826 1827 err_unmap_eq: 1828 mlx4_cleanup_icm_table(dev, &priv->eq_table.table); 1829 1830 err_unmap_cmpt: 1831 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table); 1832 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table); 1833 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table); 1834 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table); 1835 1836 err_unmap_aux: 1837 mlx4_UNMAP_ICM_AUX(dev); 1838 1839 err_free_aux: 1840 mlx4_free_icm(dev, priv->fw.aux_icm, 0); 1841 1842 return err; 1843 } 1844 1845 static void mlx4_free_icms(struct mlx4_dev *dev) 1846 { 1847 struct mlx4_priv *priv = mlx4_priv(dev); 1848 1849 mlx4_cleanup_icm_table(dev, &priv->mcg_table.table); 1850 mlx4_cleanup_icm_table(dev, &priv->srq_table.table); 1851 mlx4_cleanup_icm_table(dev, &priv->cq_table.table); 1852 mlx4_cleanup_icm_table(dev, &priv->qp_table.rdmarc_table); 1853 mlx4_cleanup_icm_table(dev, &priv->qp_table.altc_table); 1854 mlx4_cleanup_icm_table(dev, &priv->qp_table.auxc_table); 1855 mlx4_cleanup_icm_table(dev, &priv->qp_table.qp_table); 1856 mlx4_cleanup_icm_table(dev, &priv->mr_table.dmpt_table); 1857 mlx4_cleanup_icm_table(dev, &priv->mr_table.mtt_table); 1858 mlx4_cleanup_icm_table(dev, &priv->eq_table.table); 1859 mlx4_cleanup_icm_table(dev, &priv->eq_table.cmpt_table); 1860 mlx4_cleanup_icm_table(dev, &priv->cq_table.cmpt_table); 1861 mlx4_cleanup_icm_table(dev, &priv->srq_table.cmpt_table); 1862 mlx4_cleanup_icm_table(dev, &priv->qp_table.cmpt_table); 1863 1864 mlx4_UNMAP_ICM_AUX(dev); 1865 mlx4_free_icm(dev, priv->fw.aux_icm, 0); 1866 } 1867 1868 static void mlx4_slave_exit(struct mlx4_dev *dev) 1869 { 1870 struct mlx4_priv *priv = mlx4_priv(dev); 1871 1872 mutex_lock(&priv->cmd.slave_cmd_mutex); 1873 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP, 1874 MLX4_COMM_TIME)) 1875 mlx4_warn(dev, "Failed to close slave function\n"); 1876 mutex_unlock(&priv->cmd.slave_cmd_mutex); 1877 } 1878 1879 static int map_bf_area(struct mlx4_dev *dev) 1880 { 1881 struct mlx4_priv *priv = mlx4_priv(dev); 1882 resource_size_t bf_start; 1883 resource_size_t bf_len; 1884 int err = 0; 1885 1886 if (!dev->caps.bf_reg_size) 1887 return -ENXIO; 1888 1889 bf_start = pci_resource_start(dev->persist->pdev, 2) + 1890 (dev->caps.num_uars << PAGE_SHIFT); 1891 bf_len = pci_resource_len(dev->persist->pdev, 2) - 1892 (dev->caps.num_uars << PAGE_SHIFT); 1893 priv->bf_mapping = io_mapping_create_wc(bf_start, bf_len); 1894 if (!priv->bf_mapping) 1895 err = -ENOMEM; 1896 1897 return err; 1898 } 1899 1900 static void unmap_bf_area(struct mlx4_dev *dev) 1901 { 1902 if (mlx4_priv(dev)->bf_mapping) 1903 io_mapping_free(mlx4_priv(dev)->bf_mapping); 1904 } 1905 1906 u64 mlx4_read_clock(struct mlx4_dev *dev) 1907 { 1908 u32 clockhi, clocklo, clockhi1; 1909 u64 cycles; 1910 int i; 1911 struct mlx4_priv *priv = mlx4_priv(dev); 1912 1913 for (i = 0; i < 10; i++) { 1914 clockhi = swab32(readl(priv->clock_mapping)); 1915 clocklo = swab32(readl(priv->clock_mapping + 4)); 1916 clockhi1 = swab32(readl(priv->clock_mapping)); 1917 if (clockhi == clockhi1) 1918 break; 1919 } 1920 1921 cycles = (u64) clockhi << 32 | (u64) clocklo; 1922 1923 return cycles; 1924 } 1925 EXPORT_SYMBOL_GPL(mlx4_read_clock); 1926 1927 1928 static int map_internal_clock(struct mlx4_dev *dev) 1929 { 1930 struct mlx4_priv *priv = mlx4_priv(dev); 1931 1932 priv->clock_mapping = 1933 ioremap(pci_resource_start(dev->persist->pdev, 1934 priv->fw.clock_bar) + 1935 priv->fw.clock_offset, MLX4_CLOCK_SIZE); 1936 1937 if (!priv->clock_mapping) 1938 return -ENOMEM; 1939 1940 return 0; 1941 } 1942 1943 int mlx4_get_internal_clock_params(struct mlx4_dev *dev, 1944 struct mlx4_clock_params *params) 1945 { 1946 struct mlx4_priv *priv = mlx4_priv(dev); 1947 1948 if (mlx4_is_slave(dev)) 1949 return -EOPNOTSUPP; 1950 1951 if (!params) 1952 return -EINVAL; 1953 1954 params->bar = priv->fw.clock_bar; 1955 params->offset = priv->fw.clock_offset; 1956 params->size = MLX4_CLOCK_SIZE; 1957 1958 return 0; 1959 } 1960 EXPORT_SYMBOL_GPL(mlx4_get_internal_clock_params); 1961 1962 static void unmap_internal_clock(struct mlx4_dev *dev) 1963 { 1964 struct mlx4_priv *priv = mlx4_priv(dev); 1965 1966 if (priv->clock_mapping) 1967 iounmap(priv->clock_mapping); 1968 } 1969 1970 static void mlx4_close_hca(struct mlx4_dev *dev) 1971 { 1972 unmap_internal_clock(dev); 1973 unmap_bf_area(dev); 1974 if (mlx4_is_slave(dev)) 1975 mlx4_slave_exit(dev); 1976 else { 1977 mlx4_CLOSE_HCA(dev, 0); 1978 mlx4_free_icms(dev); 1979 } 1980 } 1981 1982 static void mlx4_close_fw(struct mlx4_dev *dev) 1983 { 1984 if (!mlx4_is_slave(dev)) { 1985 mlx4_UNMAP_FA(dev); 1986 mlx4_free_icm(dev, mlx4_priv(dev)->fw.fw_icm, 0); 1987 } 1988 } 1989 1990 static int mlx4_comm_check_offline(struct mlx4_dev *dev) 1991 { 1992 #define COMM_CHAN_OFFLINE_OFFSET 0x09 1993 1994 u32 comm_flags; 1995 u32 offline_bit; 1996 unsigned long end; 1997 struct mlx4_priv *priv = mlx4_priv(dev); 1998 1999 end = msecs_to_jiffies(MLX4_COMM_OFFLINE_TIME_OUT) + jiffies; 2000 while (time_before(jiffies, end)) { 2001 comm_flags = swab32(readl((__iomem char *)priv->mfunc.comm + 2002 MLX4_COMM_CHAN_FLAGS)); 2003 offline_bit = (comm_flags & 2004 (u32)(1 << COMM_CHAN_OFFLINE_OFFSET)); 2005 if (!offline_bit) 2006 return 0; 2007 2008 /* If device removal has been requested, 2009 * do not continue retrying. 2010 */ 2011 if (dev->persist->interface_state & 2012 MLX4_INTERFACE_STATE_NOWAIT) 2013 break; 2014 2015 /* There are cases as part of AER/Reset flow that PF needs 2016 * around 100 msec to load. We therefore sleep for 100 msec 2017 * to allow other tasks to make use of that CPU during this 2018 * time interval. 2019 */ 2020 msleep(100); 2021 } 2022 mlx4_err(dev, "Communication channel is offline.\n"); 2023 return -EIO; 2024 } 2025 2026 static void mlx4_reset_vf_support(struct mlx4_dev *dev) 2027 { 2028 #define COMM_CHAN_RST_OFFSET 0x1e 2029 2030 struct mlx4_priv *priv = mlx4_priv(dev); 2031 u32 comm_rst; 2032 u32 comm_caps; 2033 2034 comm_caps = swab32(readl((__iomem char *)priv->mfunc.comm + 2035 MLX4_COMM_CHAN_CAPS)); 2036 comm_rst = (comm_caps & (u32)(1 << COMM_CHAN_RST_OFFSET)); 2037 2038 if (comm_rst) 2039 dev->caps.vf_caps |= MLX4_VF_CAP_FLAG_RESET; 2040 } 2041 2042 static int mlx4_init_slave(struct mlx4_dev *dev) 2043 { 2044 struct mlx4_priv *priv = mlx4_priv(dev); 2045 u64 dma = (u64) priv->mfunc.vhcr_dma; 2046 int ret_from_reset = 0; 2047 u32 slave_read; 2048 u32 cmd_channel_ver; 2049 2050 if (atomic_read(&pf_loading)) { 2051 mlx4_warn(dev, "PF is not ready - Deferring probe\n"); 2052 return -EPROBE_DEFER; 2053 } 2054 2055 mutex_lock(&priv->cmd.slave_cmd_mutex); 2056 priv->cmd.max_cmds = 1; 2057 if (mlx4_comm_check_offline(dev)) { 2058 mlx4_err(dev, "PF is not responsive, skipping initialization\n"); 2059 goto err_offline; 2060 } 2061 2062 mlx4_reset_vf_support(dev); 2063 mlx4_warn(dev, "Sending reset\n"); 2064 ret_from_reset = mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, 2065 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME); 2066 /* if we are in the middle of flr the slave will try 2067 * NUM_OF_RESET_RETRIES times before leaving.*/ 2068 if (ret_from_reset) { 2069 if (MLX4_DELAY_RESET_SLAVE == ret_from_reset) { 2070 mlx4_warn(dev, "slave is currently in the middle of FLR - Deferring probe\n"); 2071 mutex_unlock(&priv->cmd.slave_cmd_mutex); 2072 return -EPROBE_DEFER; 2073 } else 2074 goto err; 2075 } 2076 2077 /* check the driver version - the slave I/F revision 2078 * must match the master's */ 2079 slave_read = swab32(readl(&priv->mfunc.comm->slave_read)); 2080 cmd_channel_ver = mlx4_comm_get_version(); 2081 2082 if (MLX4_COMM_GET_IF_REV(cmd_channel_ver) != 2083 MLX4_COMM_GET_IF_REV(slave_read)) { 2084 mlx4_err(dev, "slave driver version is not supported by the master\n"); 2085 goto err; 2086 } 2087 2088 mlx4_warn(dev, "Sending vhcr0\n"); 2089 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR0, dma >> 48, 2090 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME)) 2091 goto err; 2092 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR1, dma >> 32, 2093 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME)) 2094 goto err; 2095 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR2, dma >> 16, 2096 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME)) 2097 goto err; 2098 if (mlx4_comm_cmd(dev, MLX4_COMM_CMD_VHCR_EN, dma, 2099 MLX4_COMM_CMD_NA_OP, MLX4_COMM_TIME)) 2100 goto err; 2101 2102 mutex_unlock(&priv->cmd.slave_cmd_mutex); 2103 return 0; 2104 2105 err: 2106 mlx4_comm_cmd(dev, MLX4_COMM_CMD_RESET, 0, MLX4_COMM_CMD_NA_OP, 0); 2107 err_offline: 2108 mutex_unlock(&priv->cmd.slave_cmd_mutex); 2109 return -EIO; 2110 } 2111 2112 static void mlx4_parav_master_pf_caps(struct mlx4_dev *dev) 2113 { 2114 int i; 2115 2116 for (i = 1; i <= dev->caps.num_ports; i++) { 2117 if (dev->caps.port_type[i] == MLX4_PORT_TYPE_ETH) 2118 dev->caps.gid_table_len[i] = 2119 mlx4_get_slave_num_gids(dev, 0, i); 2120 else 2121 dev->caps.gid_table_len[i] = 1; 2122 dev->caps.pkey_table_len[i] = 2123 dev->phys_caps.pkey_phys_table_len[i] - 1; 2124 } 2125 } 2126 2127 static int choose_log_fs_mgm_entry_size(int qp_per_entry) 2128 { 2129 int i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; 2130 2131 for (i = MLX4_MIN_MGM_LOG_ENTRY_SIZE; i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE; 2132 i++) { 2133 if (qp_per_entry <= 4 * ((1 << i) / 16 - 2)) 2134 break; 2135 } 2136 2137 return (i <= MLX4_MAX_MGM_LOG_ENTRY_SIZE) ? i : -1; 2138 } 2139 2140 static const char *dmfs_high_rate_steering_mode_str(int dmfs_high_steer_mode) 2141 { 2142 switch (dmfs_high_steer_mode) { 2143 case MLX4_STEERING_DMFS_A0_DEFAULT: 2144 return "default performance"; 2145 2146 case MLX4_STEERING_DMFS_A0_DYNAMIC: 2147 return "dynamic hybrid mode"; 2148 2149 case MLX4_STEERING_DMFS_A0_STATIC: 2150 return "performance optimized for limited rule configuration (static)"; 2151 2152 case MLX4_STEERING_DMFS_A0_DISABLE: 2153 return "disabled performance optimized steering"; 2154 2155 case MLX4_STEERING_DMFS_A0_NOT_SUPPORTED: 2156 return "performance optimized steering not supported"; 2157 2158 default: 2159 return "Unrecognized mode"; 2160 } 2161 } 2162 2163 #define MLX4_DMFS_A0_STEERING (1UL << 2) 2164 2165 static void choose_steering_mode(struct mlx4_dev *dev, 2166 struct mlx4_dev_cap *dev_cap) 2167 { 2168 if (mlx4_log_num_mgm_entry_size <= 0) { 2169 if ((-mlx4_log_num_mgm_entry_size) & MLX4_DMFS_A0_STEERING) { 2170 if (dev->caps.dmfs_high_steer_mode == 2171 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) 2172 mlx4_err(dev, "DMFS high rate mode not supported\n"); 2173 else 2174 dev->caps.dmfs_high_steer_mode = 2175 MLX4_STEERING_DMFS_A0_STATIC; 2176 } 2177 } 2178 2179 if (mlx4_log_num_mgm_entry_size <= 0 && 2180 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_FS_EN && 2181 (!mlx4_is_mfunc(dev) || 2182 (dev_cap->fs_max_num_qp_per_entry >= 2183 (dev->persist->num_vfs + 1))) && 2184 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry) >= 2185 MLX4_MIN_MGM_LOG_ENTRY_SIZE) { 2186 dev->oper_log_mgm_entry_size = 2187 choose_log_fs_mgm_entry_size(dev_cap->fs_max_num_qp_per_entry); 2188 dev->caps.steering_mode = MLX4_STEERING_MODE_DEVICE_MANAGED; 2189 dev->caps.num_qp_per_mgm = dev_cap->fs_max_num_qp_per_entry; 2190 dev->caps.fs_log_max_ucast_qp_range_size = 2191 dev_cap->fs_log_max_ucast_qp_range_size; 2192 } else { 2193 if (dev->caps.dmfs_high_steer_mode != 2194 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) 2195 dev->caps.dmfs_high_steer_mode = MLX4_STEERING_DMFS_A0_DISABLE; 2196 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER && 2197 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) 2198 dev->caps.steering_mode = MLX4_STEERING_MODE_B0; 2199 else { 2200 dev->caps.steering_mode = MLX4_STEERING_MODE_A0; 2201 2202 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_UC_STEER || 2203 dev->caps.flags & MLX4_DEV_CAP_FLAG_VEP_MC_STEER) 2204 mlx4_warn(dev, "Must have both UC_STEER and MC_STEER flags set to use B0 steering - falling back to A0 steering mode\n"); 2205 } 2206 dev->oper_log_mgm_entry_size = 2207 mlx4_log_num_mgm_entry_size > 0 ? 2208 mlx4_log_num_mgm_entry_size : 2209 MLX4_DEFAULT_MGM_LOG_ENTRY_SIZE; 2210 dev->caps.num_qp_per_mgm = mlx4_get_qp_per_mgm(dev); 2211 } 2212 mlx4_dbg(dev, "Steering mode is: %s, oper_log_mgm_entry_size = %d, modparam log_num_mgm_entry_size = %d\n", 2213 mlx4_steering_mode_str(dev->caps.steering_mode), 2214 dev->oper_log_mgm_entry_size, 2215 mlx4_log_num_mgm_entry_size); 2216 } 2217 2218 static void choose_tunnel_offload_mode(struct mlx4_dev *dev, 2219 struct mlx4_dev_cap *dev_cap) 2220 { 2221 if (dev->caps.steering_mode == MLX4_STEERING_MODE_DEVICE_MANAGED && 2222 dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_VXLAN_OFFLOADS) 2223 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_VXLAN; 2224 else 2225 dev->caps.tunnel_offload_mode = MLX4_TUNNEL_OFFLOAD_MODE_NONE; 2226 2227 mlx4_dbg(dev, "Tunneling offload mode is: %s\n", (dev->caps.tunnel_offload_mode 2228 == MLX4_TUNNEL_OFFLOAD_MODE_VXLAN) ? "vxlan" : "none"); 2229 } 2230 2231 static int mlx4_validate_optimized_steering(struct mlx4_dev *dev) 2232 { 2233 int i; 2234 struct mlx4_port_cap port_cap; 2235 2236 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) 2237 return -EINVAL; 2238 2239 for (i = 1; i <= dev->caps.num_ports; i++) { 2240 if (mlx4_dev_port(dev, i, &port_cap)) { 2241 mlx4_err(dev, 2242 "QUERY_DEV_CAP command failed, can't verify DMFS high rate steering.\n"); 2243 } else if ((dev->caps.dmfs_high_steer_mode != 2244 MLX4_STEERING_DMFS_A0_DEFAULT) && 2245 (port_cap.dmfs_optimized_state == 2246 !!(dev->caps.dmfs_high_steer_mode == 2247 MLX4_STEERING_DMFS_A0_DISABLE))) { 2248 mlx4_err(dev, 2249 "DMFS high rate steer mode differ, driver requested %s but %s in FW.\n", 2250 dmfs_high_rate_steering_mode_str( 2251 dev->caps.dmfs_high_steer_mode), 2252 (port_cap.dmfs_optimized_state ? 2253 "enabled" : "disabled")); 2254 } 2255 } 2256 2257 return 0; 2258 } 2259 2260 static int mlx4_init_fw(struct mlx4_dev *dev) 2261 { 2262 struct mlx4_mod_stat_cfg mlx4_cfg; 2263 int err = 0; 2264 2265 if (!mlx4_is_slave(dev)) { 2266 err = mlx4_QUERY_FW(dev); 2267 if (err) { 2268 if (err == -EACCES) 2269 mlx4_info(dev, "non-primary physical function, skipping\n"); 2270 else 2271 mlx4_err(dev, "QUERY_FW command failed, aborting\n"); 2272 return err; 2273 } 2274 2275 err = mlx4_load_fw(dev); 2276 if (err) { 2277 mlx4_err(dev, "Failed to start FW, aborting\n"); 2278 return err; 2279 } 2280 2281 mlx4_cfg.log_pg_sz_m = 1; 2282 mlx4_cfg.log_pg_sz = 0; 2283 err = mlx4_MOD_STAT_CFG(dev, &mlx4_cfg); 2284 if (err) 2285 mlx4_warn(dev, "Failed to override log_pg_sz parameter\n"); 2286 } 2287 2288 return err; 2289 } 2290 2291 static int mlx4_init_hca(struct mlx4_dev *dev) 2292 { 2293 struct mlx4_priv *priv = mlx4_priv(dev); 2294 struct mlx4_init_hca_param *init_hca = NULL; 2295 struct mlx4_dev_cap *dev_cap = NULL; 2296 struct mlx4_adapter adapter; 2297 struct mlx4_profile profile; 2298 u64 icm_size; 2299 struct mlx4_config_dev_params params; 2300 int err; 2301 2302 if (!mlx4_is_slave(dev)) { 2303 dev_cap = kzalloc(sizeof(*dev_cap), GFP_KERNEL); 2304 init_hca = kzalloc(sizeof(*init_hca), GFP_KERNEL); 2305 2306 if (!dev_cap || !init_hca) { 2307 err = -ENOMEM; 2308 goto out_free; 2309 } 2310 2311 err = mlx4_dev_cap(dev, dev_cap); 2312 if (err) { 2313 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting\n"); 2314 goto out_free; 2315 } 2316 2317 choose_steering_mode(dev, dev_cap); 2318 choose_tunnel_offload_mode(dev, dev_cap); 2319 2320 if (dev->caps.dmfs_high_steer_mode == MLX4_STEERING_DMFS_A0_STATIC && 2321 mlx4_is_master(dev)) 2322 dev->caps.function_caps |= MLX4_FUNC_CAP_DMFS_A0_STATIC; 2323 2324 err = mlx4_get_phys_port_id(dev); 2325 if (err) 2326 mlx4_err(dev, "Fail to get physical port id\n"); 2327 2328 if (mlx4_is_master(dev)) 2329 mlx4_parav_master_pf_caps(dev); 2330 2331 if (mlx4_low_memory_profile()) { 2332 mlx4_info(dev, "Running from within kdump kernel. Using low memory profile\n"); 2333 profile = low_mem_profile; 2334 } else { 2335 profile = default_profile; 2336 } 2337 if (dev->caps.steering_mode == 2338 MLX4_STEERING_MODE_DEVICE_MANAGED) 2339 profile.num_mcg = MLX4_FS_NUM_MCG; 2340 2341 icm_size = mlx4_make_profile(dev, &profile, dev_cap, 2342 init_hca); 2343 if ((long long) icm_size < 0) { 2344 err = icm_size; 2345 goto out_free; 2346 } 2347 2348 dev->caps.max_fmr_maps = (1 << (32 - ilog2(dev->caps.num_mpts))) - 1; 2349 2350 if (enable_4k_uar || !dev->persist->num_vfs) { 2351 init_hca->log_uar_sz = ilog2(dev->caps.num_uars) + 2352 PAGE_SHIFT - DEFAULT_UAR_PAGE_SHIFT; 2353 init_hca->uar_page_sz = DEFAULT_UAR_PAGE_SHIFT - 12; 2354 } else { 2355 init_hca->log_uar_sz = ilog2(dev->caps.num_uars); 2356 init_hca->uar_page_sz = PAGE_SHIFT - 12; 2357 } 2358 2359 init_hca->mw_enabled = 0; 2360 if (dev->caps.flags & MLX4_DEV_CAP_FLAG_MEM_WINDOW || 2361 dev->caps.bmme_flags & MLX4_BMME_FLAG_TYPE_2_WIN) 2362 init_hca->mw_enabled = INIT_HCA_TPT_MW_ENABLE; 2363 2364 err = mlx4_init_icm(dev, dev_cap, init_hca, icm_size); 2365 if (err) 2366 goto out_free; 2367 2368 err = mlx4_INIT_HCA(dev, init_hca); 2369 if (err) { 2370 mlx4_err(dev, "INIT_HCA command failed, aborting\n"); 2371 goto err_free_icm; 2372 } 2373 2374 if (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS) { 2375 err = mlx4_query_func(dev, dev_cap); 2376 if (err < 0) { 2377 mlx4_err(dev, "QUERY_FUNC command failed, aborting.\n"); 2378 goto err_close; 2379 } else if (err & MLX4_QUERY_FUNC_NUM_SYS_EQS) { 2380 dev->caps.num_eqs = dev_cap->max_eqs; 2381 dev->caps.reserved_eqs = dev_cap->reserved_eqs; 2382 dev->caps.reserved_uars = dev_cap->reserved_uars; 2383 } 2384 } 2385 2386 /* 2387 * If TS is supported by FW 2388 * read HCA frequency by QUERY_HCA command 2389 */ 2390 if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_TS) { 2391 err = mlx4_QUERY_HCA(dev, init_hca); 2392 if (err) { 2393 mlx4_err(dev, "QUERY_HCA command failed, disable timestamp\n"); 2394 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS; 2395 } else { 2396 dev->caps.hca_core_clock = 2397 init_hca->hca_core_clock; 2398 } 2399 2400 /* In case we got HCA frequency 0 - disable timestamping 2401 * to avoid dividing by zero 2402 */ 2403 if (!dev->caps.hca_core_clock) { 2404 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS; 2405 mlx4_err(dev, 2406 "HCA frequency is 0 - timestamping is not supported\n"); 2407 } else if (map_internal_clock(dev)) { 2408 /* 2409 * Map internal clock, 2410 * in case of failure disable timestamping 2411 */ 2412 dev->caps.flags2 &= ~MLX4_DEV_CAP_FLAG2_TS; 2413 mlx4_err(dev, "Failed to map internal clock. Timestamping is not supported\n"); 2414 } 2415 } 2416 2417 if (dev->caps.dmfs_high_steer_mode != 2418 MLX4_STEERING_DMFS_A0_NOT_SUPPORTED) { 2419 if (mlx4_validate_optimized_steering(dev)) 2420 mlx4_warn(dev, "Optimized steering validation failed\n"); 2421 2422 if (dev->caps.dmfs_high_steer_mode == 2423 MLX4_STEERING_DMFS_A0_DISABLE) { 2424 dev->caps.dmfs_high_rate_qpn_base = 2425 dev->caps.reserved_qps_cnt[MLX4_QP_REGION_FW]; 2426 dev->caps.dmfs_high_rate_qpn_range = 2427 MLX4_A0_STEERING_TABLE_SIZE; 2428 } 2429 2430 mlx4_info(dev, "DMFS high rate steer mode is: %s\n", 2431 dmfs_high_rate_steering_mode_str( 2432 dev->caps.dmfs_high_steer_mode)); 2433 } 2434 } else { 2435 err = mlx4_init_slave(dev); 2436 if (err) { 2437 if (err != -EPROBE_DEFER) 2438 mlx4_err(dev, "Failed to initialize slave\n"); 2439 return err; 2440 } 2441 2442 err = mlx4_slave_cap(dev); 2443 if (err) { 2444 mlx4_err(dev, "Failed to obtain slave caps\n"); 2445 goto err_close; 2446 } 2447 } 2448 2449 if (map_bf_area(dev)) 2450 mlx4_dbg(dev, "Failed to map blue flame area\n"); 2451 2452 /*Only the master set the ports, all the rest got it from it.*/ 2453 if (!mlx4_is_slave(dev)) 2454 mlx4_set_port_mask(dev); 2455 2456 err = mlx4_QUERY_ADAPTER(dev, &adapter); 2457 if (err) { 2458 mlx4_err(dev, "QUERY_ADAPTER command failed, aborting\n"); 2459 goto unmap_bf; 2460 } 2461 2462 /* Query CONFIG_DEV parameters */ 2463 err = mlx4_config_dev_retrieval(dev, ¶ms); 2464 if (err && err != -EOPNOTSUPP) { 2465 mlx4_err(dev, "Failed to query CONFIG_DEV parameters\n"); 2466 } else if (!err) { 2467 dev->caps.rx_checksum_flags_port[1] = params.rx_csum_flags_port_1; 2468 dev->caps.rx_checksum_flags_port[2] = params.rx_csum_flags_port_2; 2469 } 2470 priv->eq_table.inta_pin = adapter.inta_pin; 2471 memcpy(dev->board_id, adapter.board_id, sizeof(dev->board_id)); 2472 2473 err = 0; 2474 goto out_free; 2475 2476 unmap_bf: 2477 unmap_internal_clock(dev); 2478 unmap_bf_area(dev); 2479 2480 if (mlx4_is_slave(dev)) 2481 mlx4_slave_destroy_special_qp_cap(dev); 2482 2483 err_close: 2484 if (mlx4_is_slave(dev)) 2485 mlx4_slave_exit(dev); 2486 else 2487 mlx4_CLOSE_HCA(dev, 0); 2488 2489 err_free_icm: 2490 if (!mlx4_is_slave(dev)) 2491 mlx4_free_icms(dev); 2492 2493 out_free: 2494 kfree(dev_cap); 2495 kfree(init_hca); 2496 2497 return err; 2498 } 2499 2500 static int mlx4_init_counters_table(struct mlx4_dev *dev) 2501 { 2502 struct mlx4_priv *priv = mlx4_priv(dev); 2503 int nent_pow2; 2504 2505 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS)) 2506 return -ENOENT; 2507 2508 if (!dev->caps.max_counters) 2509 return -ENOSPC; 2510 2511 nent_pow2 = roundup_pow_of_two(dev->caps.max_counters); 2512 /* reserve last counter index for sink counter */ 2513 return mlx4_bitmap_init(&priv->counters_bitmap, nent_pow2, 2514 nent_pow2 - 1, 0, 2515 nent_pow2 - dev->caps.max_counters + 1); 2516 } 2517 2518 static void mlx4_cleanup_counters_table(struct mlx4_dev *dev) 2519 { 2520 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS)) 2521 return; 2522 2523 if (!dev->caps.max_counters) 2524 return; 2525 2526 mlx4_bitmap_cleanup(&mlx4_priv(dev)->counters_bitmap); 2527 } 2528 2529 static void mlx4_cleanup_default_counters(struct mlx4_dev *dev) 2530 { 2531 struct mlx4_priv *priv = mlx4_priv(dev); 2532 int port; 2533 2534 for (port = 0; port < dev->caps.num_ports; port++) 2535 if (priv->def_counter[port] != -1) 2536 mlx4_counter_free(dev, priv->def_counter[port]); 2537 } 2538 2539 static int mlx4_allocate_default_counters(struct mlx4_dev *dev) 2540 { 2541 struct mlx4_priv *priv = mlx4_priv(dev); 2542 int port, err = 0; 2543 u32 idx; 2544 2545 for (port = 0; port < dev->caps.num_ports; port++) 2546 priv->def_counter[port] = -1; 2547 2548 for (port = 0; port < dev->caps.num_ports; port++) { 2549 err = mlx4_counter_alloc(dev, &idx, MLX4_RES_USAGE_DRIVER); 2550 2551 if (!err || err == -ENOSPC) { 2552 priv->def_counter[port] = idx; 2553 } else if (err == -ENOENT) { 2554 err = 0; 2555 continue; 2556 } else if (mlx4_is_slave(dev) && err == -EINVAL) { 2557 priv->def_counter[port] = MLX4_SINK_COUNTER_INDEX(dev); 2558 mlx4_warn(dev, "can't allocate counter from old PF driver, using index %d\n", 2559 MLX4_SINK_COUNTER_INDEX(dev)); 2560 err = 0; 2561 } else { 2562 mlx4_err(dev, "%s: failed to allocate default counter port %d err %d\n", 2563 __func__, port + 1, err); 2564 mlx4_cleanup_default_counters(dev); 2565 return err; 2566 } 2567 2568 mlx4_dbg(dev, "%s: default counter index %d for port %d\n", 2569 __func__, priv->def_counter[port], port + 1); 2570 } 2571 2572 return err; 2573 } 2574 2575 int __mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx) 2576 { 2577 struct mlx4_priv *priv = mlx4_priv(dev); 2578 2579 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS)) 2580 return -ENOENT; 2581 2582 *idx = mlx4_bitmap_alloc(&priv->counters_bitmap); 2583 if (*idx == -1) { 2584 *idx = MLX4_SINK_COUNTER_INDEX(dev); 2585 return -ENOSPC; 2586 } 2587 2588 return 0; 2589 } 2590 2591 int mlx4_counter_alloc(struct mlx4_dev *dev, u32 *idx, u8 usage) 2592 { 2593 u32 in_modifier = RES_COUNTER | (((u32)usage & 3) << 30); 2594 u64 out_param; 2595 int err; 2596 2597 if (mlx4_is_mfunc(dev)) { 2598 err = mlx4_cmd_imm(dev, 0, &out_param, in_modifier, 2599 RES_OP_RESERVE, MLX4_CMD_ALLOC_RES, 2600 MLX4_CMD_TIME_CLASS_A, MLX4_CMD_WRAPPED); 2601 if (!err) 2602 *idx = get_param_l(&out_param); 2603 2604 return err; 2605 } 2606 return __mlx4_counter_alloc(dev, idx); 2607 } 2608 EXPORT_SYMBOL_GPL(mlx4_counter_alloc); 2609 2610 static int __mlx4_clear_if_stat(struct mlx4_dev *dev, 2611 u8 counter_index) 2612 { 2613 struct mlx4_cmd_mailbox *if_stat_mailbox; 2614 int err; 2615 u32 if_stat_in_mod = (counter_index & 0xff) | MLX4_QUERY_IF_STAT_RESET; 2616 2617 if_stat_mailbox = mlx4_alloc_cmd_mailbox(dev); 2618 if (IS_ERR(if_stat_mailbox)) 2619 return PTR_ERR(if_stat_mailbox); 2620 2621 err = mlx4_cmd_box(dev, 0, if_stat_mailbox->dma, if_stat_in_mod, 0, 2622 MLX4_CMD_QUERY_IF_STAT, MLX4_CMD_TIME_CLASS_C, 2623 MLX4_CMD_NATIVE); 2624 2625 mlx4_free_cmd_mailbox(dev, if_stat_mailbox); 2626 return err; 2627 } 2628 2629 void __mlx4_counter_free(struct mlx4_dev *dev, u32 idx) 2630 { 2631 if (!(dev->caps.flags & MLX4_DEV_CAP_FLAG_COUNTERS)) 2632 return; 2633 2634 if (idx == MLX4_SINK_COUNTER_INDEX(dev)) 2635 return; 2636 2637 __mlx4_clear_if_stat(dev, idx); 2638 2639 mlx4_bitmap_free(&mlx4_priv(dev)->counters_bitmap, idx, MLX4_USE_RR); 2640 return; 2641 } 2642 2643 void mlx4_counter_free(struct mlx4_dev *dev, u32 idx) 2644 { 2645 u64 in_param = 0; 2646 2647 if (mlx4_is_mfunc(dev)) { 2648 set_param_l(&in_param, idx); 2649 mlx4_cmd(dev, in_param, RES_COUNTER, RES_OP_RESERVE, 2650 MLX4_CMD_FREE_RES, MLX4_CMD_TIME_CLASS_A, 2651 MLX4_CMD_WRAPPED); 2652 return; 2653 } 2654 __mlx4_counter_free(dev, idx); 2655 } 2656 EXPORT_SYMBOL_GPL(mlx4_counter_free); 2657 2658 int mlx4_get_default_counter_index(struct mlx4_dev *dev, int port) 2659 { 2660 struct mlx4_priv *priv = mlx4_priv(dev); 2661 2662 return priv->def_counter[port - 1]; 2663 } 2664 EXPORT_SYMBOL_GPL(mlx4_get_default_counter_index); 2665 2666 void mlx4_set_admin_guid(struct mlx4_dev *dev, __be64 guid, int entry, int port) 2667 { 2668 struct mlx4_priv *priv = mlx4_priv(dev); 2669 2670 priv->mfunc.master.vf_admin[entry].vport[port].guid = guid; 2671 } 2672 EXPORT_SYMBOL_GPL(mlx4_set_admin_guid); 2673 2674 __be64 mlx4_get_admin_guid(struct mlx4_dev *dev, int entry, int port) 2675 { 2676 struct mlx4_priv *priv = mlx4_priv(dev); 2677 2678 return priv->mfunc.master.vf_admin[entry].vport[port].guid; 2679 } 2680 EXPORT_SYMBOL_GPL(mlx4_get_admin_guid); 2681 2682 void mlx4_set_random_admin_guid(struct mlx4_dev *dev, int entry, int port) 2683 { 2684 struct mlx4_priv *priv = mlx4_priv(dev); 2685 __be64 guid; 2686 2687 /* hw GUID */ 2688 if (entry == 0) 2689 return; 2690 2691 get_random_bytes((char *)&guid, sizeof(guid)); 2692 guid &= ~(cpu_to_be64(1ULL << 56)); 2693 guid |= cpu_to_be64(1ULL << 57); 2694 priv->mfunc.master.vf_admin[entry].vport[port].guid = guid; 2695 } 2696 2697 static int mlx4_setup_hca(struct mlx4_dev *dev) 2698 { 2699 struct mlx4_priv *priv = mlx4_priv(dev); 2700 int err; 2701 int port; 2702 __be32 ib_port_default_caps; 2703 2704 err = mlx4_init_uar_table(dev); 2705 if (err) { 2706 mlx4_err(dev, "Failed to initialize user access region table, aborting\n"); 2707 return err; 2708 } 2709 2710 err = mlx4_uar_alloc(dev, &priv->driver_uar); 2711 if (err) { 2712 mlx4_err(dev, "Failed to allocate driver access region, aborting\n"); 2713 goto err_uar_table_free; 2714 } 2715 2716 priv->kar = ioremap((phys_addr_t) priv->driver_uar.pfn << PAGE_SHIFT, PAGE_SIZE); 2717 if (!priv->kar) { 2718 mlx4_err(dev, "Couldn't map kernel access region, aborting\n"); 2719 err = -ENOMEM; 2720 goto err_uar_free; 2721 } 2722 2723 err = mlx4_init_pd_table(dev); 2724 if (err) { 2725 mlx4_err(dev, "Failed to initialize protection domain table, aborting\n"); 2726 goto err_kar_unmap; 2727 } 2728 2729 err = mlx4_init_xrcd_table(dev); 2730 if (err) { 2731 mlx4_err(dev, "Failed to initialize reliable connection domain table, aborting\n"); 2732 goto err_pd_table_free; 2733 } 2734 2735 err = mlx4_init_mr_table(dev); 2736 if (err) { 2737 mlx4_err(dev, "Failed to initialize memory region table, aborting\n"); 2738 goto err_xrcd_table_free; 2739 } 2740 2741 if (!mlx4_is_slave(dev)) { 2742 err = mlx4_init_mcg_table(dev); 2743 if (err) { 2744 mlx4_err(dev, "Failed to initialize multicast group table, aborting\n"); 2745 goto err_mr_table_free; 2746 } 2747 err = mlx4_config_mad_demux(dev); 2748 if (err) { 2749 mlx4_err(dev, "Failed in config_mad_demux, aborting\n"); 2750 goto err_mcg_table_free; 2751 } 2752 } 2753 2754 err = mlx4_init_eq_table(dev); 2755 if (err) { 2756 mlx4_err(dev, "Failed to initialize event queue table, aborting\n"); 2757 goto err_mcg_table_free; 2758 } 2759 2760 err = mlx4_cmd_use_events(dev); 2761 if (err) { 2762 mlx4_err(dev, "Failed to switch to event-driven firmware commands, aborting\n"); 2763 goto err_eq_table_free; 2764 } 2765 2766 err = mlx4_NOP(dev); 2767 if (err) { 2768 if (dev->flags & MLX4_FLAG_MSI_X) { 2769 mlx4_warn(dev, "NOP command failed to generate MSI-X interrupt IRQ %d)\n", 2770 priv->eq_table.eq[MLX4_EQ_ASYNC].irq); 2771 mlx4_warn(dev, "Trying again without MSI-X\n"); 2772 } else { 2773 mlx4_err(dev, "NOP command failed to generate interrupt (IRQ %d), aborting\n", 2774 priv->eq_table.eq[MLX4_EQ_ASYNC].irq); 2775 mlx4_err(dev, "BIOS or ACPI interrupt routing problem?\n"); 2776 } 2777 2778 goto err_cmd_poll; 2779 } 2780 2781 mlx4_dbg(dev, "NOP command IRQ test passed\n"); 2782 2783 err = mlx4_init_cq_table(dev); 2784 if (err) { 2785 mlx4_err(dev, "Failed to initialize completion queue table, aborting\n"); 2786 goto err_cmd_poll; 2787 } 2788 2789 err = mlx4_init_srq_table(dev); 2790 if (err) { 2791 mlx4_err(dev, "Failed to initialize shared receive queue table, aborting\n"); 2792 goto err_cq_table_free; 2793 } 2794 2795 err = mlx4_init_qp_table(dev); 2796 if (err) { 2797 mlx4_err(dev, "Failed to initialize queue pair table, aborting\n"); 2798 goto err_srq_table_free; 2799 } 2800 2801 if (!mlx4_is_slave(dev)) { 2802 err = mlx4_init_counters_table(dev); 2803 if (err && err != -ENOENT) { 2804 mlx4_err(dev, "Failed to initialize counters table, aborting\n"); 2805 goto err_qp_table_free; 2806 } 2807 } 2808 2809 err = mlx4_allocate_default_counters(dev); 2810 if (err) { 2811 mlx4_err(dev, "Failed to allocate default counters, aborting\n"); 2812 goto err_counters_table_free; 2813 } 2814 2815 if (!mlx4_is_slave(dev)) { 2816 for (port = 1; port <= dev->caps.num_ports; port++) { 2817 ib_port_default_caps = 0; 2818 err = mlx4_get_port_ib_caps(dev, port, 2819 &ib_port_default_caps); 2820 if (err) 2821 mlx4_warn(dev, "failed to get port %d default ib capabilities (%d). Continuing with caps = 0\n", 2822 port, err); 2823 dev->caps.ib_port_def_cap[port] = ib_port_default_caps; 2824 2825 /* initialize per-slave default ib port capabilities */ 2826 if (mlx4_is_master(dev)) { 2827 int i; 2828 for (i = 0; i < dev->num_slaves; i++) { 2829 if (i == mlx4_master_func_num(dev)) 2830 continue; 2831 priv->mfunc.master.slave_state[i].ib_cap_mask[port] = 2832 ib_port_default_caps; 2833 } 2834 } 2835 2836 if (mlx4_is_mfunc(dev)) 2837 dev->caps.port_ib_mtu[port] = IB_MTU_2048; 2838 else 2839 dev->caps.port_ib_mtu[port] = IB_MTU_4096; 2840 2841 err = mlx4_SET_PORT(dev, port, mlx4_is_master(dev) ? 2842 dev->caps.pkey_table_len[port] : -1); 2843 if (err) { 2844 mlx4_err(dev, "Failed to set port %d, aborting\n", 2845 port); 2846 goto err_default_countes_free; 2847 } 2848 } 2849 } 2850 2851 return 0; 2852 2853 err_default_countes_free: 2854 mlx4_cleanup_default_counters(dev); 2855 2856 err_counters_table_free: 2857 if (!mlx4_is_slave(dev)) 2858 mlx4_cleanup_counters_table(dev); 2859 2860 err_qp_table_free: 2861 mlx4_cleanup_qp_table(dev); 2862 2863 err_srq_table_free: 2864 mlx4_cleanup_srq_table(dev); 2865 2866 err_cq_table_free: 2867 mlx4_cleanup_cq_table(dev); 2868 2869 err_cmd_poll: 2870 mlx4_cmd_use_polling(dev); 2871 2872 err_eq_table_free: 2873 mlx4_cleanup_eq_table(dev); 2874 2875 err_mcg_table_free: 2876 if (!mlx4_is_slave(dev)) 2877 mlx4_cleanup_mcg_table(dev); 2878 2879 err_mr_table_free: 2880 mlx4_cleanup_mr_table(dev); 2881 2882 err_xrcd_table_free: 2883 mlx4_cleanup_xrcd_table(dev); 2884 2885 err_pd_table_free: 2886 mlx4_cleanup_pd_table(dev); 2887 2888 err_kar_unmap: 2889 iounmap(priv->kar); 2890 2891 err_uar_free: 2892 mlx4_uar_free(dev, &priv->driver_uar); 2893 2894 err_uar_table_free: 2895 mlx4_cleanup_uar_table(dev); 2896 return err; 2897 } 2898 2899 static int mlx4_init_affinity_hint(struct mlx4_dev *dev, int port, int eqn) 2900 { 2901 int requested_cpu = 0; 2902 struct mlx4_priv *priv = mlx4_priv(dev); 2903 struct mlx4_eq *eq; 2904 int off = 0; 2905 int i; 2906 2907 if (eqn > dev->caps.num_comp_vectors) 2908 return -EINVAL; 2909 2910 for (i = 1; i < port; i++) 2911 off += mlx4_get_eqs_per_port(dev, i); 2912 2913 requested_cpu = eqn - off - !!(eqn > MLX4_EQ_ASYNC); 2914 2915 /* Meaning EQs are shared, and this call comes from the second port */ 2916 if (requested_cpu < 0) 2917 return 0; 2918 2919 eq = &priv->eq_table.eq[eqn]; 2920 2921 if (!zalloc_cpumask_var(&eq->affinity_mask, GFP_KERNEL)) 2922 return -ENOMEM; 2923 2924 cpumask_set_cpu(requested_cpu, eq->affinity_mask); 2925 2926 return 0; 2927 } 2928 2929 static void mlx4_enable_msi_x(struct mlx4_dev *dev) 2930 { 2931 struct mlx4_priv *priv = mlx4_priv(dev); 2932 struct msix_entry *entries; 2933 int i; 2934 int port = 0; 2935 2936 if (msi_x) { 2937 int nreq = min3(dev->caps.num_ports * 2938 (int)num_online_cpus() + 1, 2939 dev->caps.num_eqs - dev->caps.reserved_eqs, 2940 MAX_MSIX); 2941 2942 if (msi_x > 1) 2943 nreq = min_t(int, nreq, msi_x); 2944 2945 entries = kcalloc(nreq, sizeof(*entries), GFP_KERNEL); 2946 if (!entries) 2947 goto no_msi; 2948 2949 for (i = 0; i < nreq; ++i) 2950 entries[i].entry = i; 2951 2952 nreq = pci_enable_msix_range(dev->persist->pdev, entries, 2, 2953 nreq); 2954 2955 if (nreq < 0 || nreq < MLX4_EQ_ASYNC) { 2956 kfree(entries); 2957 goto no_msi; 2958 } 2959 /* 1 is reserved for events (asyncrounous EQ) */ 2960 dev->caps.num_comp_vectors = nreq - 1; 2961 2962 priv->eq_table.eq[MLX4_EQ_ASYNC].irq = entries[0].vector; 2963 bitmap_zero(priv->eq_table.eq[MLX4_EQ_ASYNC].actv_ports.ports, 2964 dev->caps.num_ports); 2965 2966 for (i = 0; i < dev->caps.num_comp_vectors + 1; i++) { 2967 if (i == MLX4_EQ_ASYNC) 2968 continue; 2969 2970 priv->eq_table.eq[i].irq = 2971 entries[i + 1 - !!(i > MLX4_EQ_ASYNC)].vector; 2972 2973 if (MLX4_IS_LEGACY_EQ_MODE(dev->caps)) { 2974 bitmap_fill(priv->eq_table.eq[i].actv_ports.ports, 2975 dev->caps.num_ports); 2976 /* We don't set affinity hint when there 2977 * aren't enough EQs 2978 */ 2979 } else { 2980 set_bit(port, 2981 priv->eq_table.eq[i].actv_ports.ports); 2982 if (mlx4_init_affinity_hint(dev, port + 1, i)) 2983 mlx4_warn(dev, "Couldn't init hint cpumask for EQ %d\n", 2984 i); 2985 } 2986 /* We divide the Eqs evenly between the two ports. 2987 * (dev->caps.num_comp_vectors / dev->caps.num_ports) 2988 * refers to the number of Eqs per port 2989 * (i.e eqs_per_port). Theoretically, we would like to 2990 * write something like (i + 1) % eqs_per_port == 0. 2991 * However, since there's an asynchronous Eq, we have 2992 * to skip over it by comparing this condition to 2993 * !!((i + 1) > MLX4_EQ_ASYNC). 2994 */ 2995 if ((dev->caps.num_comp_vectors > dev->caps.num_ports) && 2996 ((i + 1) % 2997 (dev->caps.num_comp_vectors / dev->caps.num_ports)) == 2998 !!((i + 1) > MLX4_EQ_ASYNC)) 2999 /* If dev->caps.num_comp_vectors < dev->caps.num_ports, 3000 * everything is shared anyway. 3001 */ 3002 port++; 3003 } 3004 3005 dev->flags |= MLX4_FLAG_MSI_X; 3006 3007 kfree(entries); 3008 return; 3009 } 3010 3011 no_msi: 3012 dev->caps.num_comp_vectors = 1; 3013 3014 BUG_ON(MLX4_EQ_ASYNC >= 2); 3015 for (i = 0; i < 2; ++i) { 3016 priv->eq_table.eq[i].irq = dev->persist->pdev->irq; 3017 if (i != MLX4_EQ_ASYNC) { 3018 bitmap_fill(priv->eq_table.eq[i].actv_ports.ports, 3019 dev->caps.num_ports); 3020 } 3021 } 3022 } 3023 3024 static int mlx4_init_port_info(struct mlx4_dev *dev, int port) 3025 { 3026 struct devlink *devlink = priv_to_devlink(mlx4_priv(dev)); 3027 struct mlx4_port_info *info = &mlx4_priv(dev)->port[port]; 3028 int err; 3029 3030 err = devlink_port_register(devlink, &info->devlink_port, port); 3031 if (err) 3032 return err; 3033 3034 info->dev = dev; 3035 info->port = port; 3036 if (!mlx4_is_slave(dev)) { 3037 mlx4_init_mac_table(dev, &info->mac_table); 3038 mlx4_init_vlan_table(dev, &info->vlan_table); 3039 mlx4_init_roce_gid_table(dev, &info->gid_table); 3040 info->base_qpn = mlx4_get_base_qpn(dev, port); 3041 } 3042 3043 sprintf(info->dev_name, "mlx4_port%d", port); 3044 info->port_attr.attr.name = info->dev_name; 3045 if (mlx4_is_mfunc(dev)) { 3046 info->port_attr.attr.mode = 0444; 3047 } else { 3048 info->port_attr.attr.mode = 0644; 3049 info->port_attr.store = set_port_type; 3050 } 3051 info->port_attr.show = show_port_type; 3052 sysfs_attr_init(&info->port_attr.attr); 3053 3054 err = device_create_file(&dev->persist->pdev->dev, &info->port_attr); 3055 if (err) { 3056 mlx4_err(dev, "Failed to create file for port %d\n", port); 3057 devlink_port_unregister(&info->devlink_port); 3058 info->port = -1; 3059 return err; 3060 } 3061 3062 sprintf(info->dev_mtu_name, "mlx4_port%d_mtu", port); 3063 info->port_mtu_attr.attr.name = info->dev_mtu_name; 3064 if (mlx4_is_mfunc(dev)) { 3065 info->port_mtu_attr.attr.mode = 0444; 3066 } else { 3067 info->port_mtu_attr.attr.mode = 0644; 3068 info->port_mtu_attr.store = set_port_ib_mtu; 3069 } 3070 info->port_mtu_attr.show = show_port_ib_mtu; 3071 sysfs_attr_init(&info->port_mtu_attr.attr); 3072 3073 err = device_create_file(&dev->persist->pdev->dev, 3074 &info->port_mtu_attr); 3075 if (err) { 3076 mlx4_err(dev, "Failed to create mtu file for port %d\n", port); 3077 device_remove_file(&info->dev->persist->pdev->dev, 3078 &info->port_attr); 3079 devlink_port_unregister(&info->devlink_port); 3080 info->port = -1; 3081 return err; 3082 } 3083 3084 return 0; 3085 } 3086 3087 static void mlx4_cleanup_port_info(struct mlx4_port_info *info) 3088 { 3089 if (info->port < 0) 3090 return; 3091 3092 device_remove_file(&info->dev->persist->pdev->dev, &info->port_attr); 3093 device_remove_file(&info->dev->persist->pdev->dev, 3094 &info->port_mtu_attr); 3095 devlink_port_unregister(&info->devlink_port); 3096 3097 #ifdef CONFIG_RFS_ACCEL 3098 free_irq_cpu_rmap(info->rmap); 3099 info->rmap = NULL; 3100 #endif 3101 } 3102 3103 static int mlx4_init_steering(struct mlx4_dev *dev) 3104 { 3105 struct mlx4_priv *priv = mlx4_priv(dev); 3106 int num_entries = dev->caps.num_ports; 3107 int i, j; 3108 3109 priv->steer = kcalloc(num_entries, sizeof(struct mlx4_steer), 3110 GFP_KERNEL); 3111 if (!priv->steer) 3112 return -ENOMEM; 3113 3114 for (i = 0; i < num_entries; i++) 3115 for (j = 0; j < MLX4_NUM_STEERS; j++) { 3116 INIT_LIST_HEAD(&priv->steer[i].promisc_qps[j]); 3117 INIT_LIST_HEAD(&priv->steer[i].steer_entries[j]); 3118 } 3119 return 0; 3120 } 3121 3122 static void mlx4_clear_steering(struct mlx4_dev *dev) 3123 { 3124 struct mlx4_priv *priv = mlx4_priv(dev); 3125 struct mlx4_steer_index *entry, *tmp_entry; 3126 struct mlx4_promisc_qp *pqp, *tmp_pqp; 3127 int num_entries = dev->caps.num_ports; 3128 int i, j; 3129 3130 for (i = 0; i < num_entries; i++) { 3131 for (j = 0; j < MLX4_NUM_STEERS; j++) { 3132 list_for_each_entry_safe(pqp, tmp_pqp, 3133 &priv->steer[i].promisc_qps[j], 3134 list) { 3135 list_del(&pqp->list); 3136 kfree(pqp); 3137 } 3138 list_for_each_entry_safe(entry, tmp_entry, 3139 &priv->steer[i].steer_entries[j], 3140 list) { 3141 list_del(&entry->list); 3142 list_for_each_entry_safe(pqp, tmp_pqp, 3143 &entry->duplicates, 3144 list) { 3145 list_del(&pqp->list); 3146 kfree(pqp); 3147 } 3148 kfree(entry); 3149 } 3150 } 3151 } 3152 kfree(priv->steer); 3153 } 3154 3155 static int extended_func_num(struct pci_dev *pdev) 3156 { 3157 return PCI_SLOT(pdev->devfn) * 8 + PCI_FUNC(pdev->devfn); 3158 } 3159 3160 #define MLX4_OWNER_BASE 0x8069c 3161 #define MLX4_OWNER_SIZE 4 3162 3163 static int mlx4_get_ownership(struct mlx4_dev *dev) 3164 { 3165 void __iomem *owner; 3166 u32 ret; 3167 3168 if (pci_channel_offline(dev->persist->pdev)) 3169 return -EIO; 3170 3171 owner = ioremap(pci_resource_start(dev->persist->pdev, 0) + 3172 MLX4_OWNER_BASE, 3173 MLX4_OWNER_SIZE); 3174 if (!owner) { 3175 mlx4_err(dev, "Failed to obtain ownership bit\n"); 3176 return -ENOMEM; 3177 } 3178 3179 ret = readl(owner); 3180 iounmap(owner); 3181 return (int) !!ret; 3182 } 3183 3184 static void mlx4_free_ownership(struct mlx4_dev *dev) 3185 { 3186 void __iomem *owner; 3187 3188 if (pci_channel_offline(dev->persist->pdev)) 3189 return; 3190 3191 owner = ioremap(pci_resource_start(dev->persist->pdev, 0) + 3192 MLX4_OWNER_BASE, 3193 MLX4_OWNER_SIZE); 3194 if (!owner) { 3195 mlx4_err(dev, "Failed to obtain ownership bit\n"); 3196 return; 3197 } 3198 writel(0, owner); 3199 msleep(1000); 3200 iounmap(owner); 3201 } 3202 3203 #define SRIOV_VALID_STATE(flags) (!!((flags) & MLX4_FLAG_SRIOV) ==\ 3204 !!((flags) & MLX4_FLAG_MASTER)) 3205 3206 static u64 mlx4_enable_sriov(struct mlx4_dev *dev, struct pci_dev *pdev, 3207 u8 total_vfs, int existing_vfs, int reset_flow) 3208 { 3209 u64 dev_flags = dev->flags; 3210 int err = 0; 3211 int fw_enabled_sriov_vfs = min(pci_sriov_get_totalvfs(pdev), 3212 MLX4_MAX_NUM_VF); 3213 3214 if (reset_flow) { 3215 dev->dev_vfs = kcalloc(total_vfs, sizeof(*dev->dev_vfs), 3216 GFP_KERNEL); 3217 if (!dev->dev_vfs) 3218 goto free_mem; 3219 return dev_flags; 3220 } 3221 3222 atomic_inc(&pf_loading); 3223 if (dev->flags & MLX4_FLAG_SRIOV) { 3224 if (existing_vfs != total_vfs) { 3225 mlx4_err(dev, "SR-IOV was already enabled, but with num_vfs (%d) different than requested (%d)\n", 3226 existing_vfs, total_vfs); 3227 total_vfs = existing_vfs; 3228 } 3229 } 3230 3231 dev->dev_vfs = kcalloc(total_vfs, sizeof(*dev->dev_vfs), GFP_KERNEL); 3232 if (NULL == dev->dev_vfs) { 3233 mlx4_err(dev, "Failed to allocate memory for VFs\n"); 3234 goto disable_sriov; 3235 } 3236 3237 if (!(dev->flags & MLX4_FLAG_SRIOV)) { 3238 if (total_vfs > fw_enabled_sriov_vfs) { 3239 mlx4_err(dev, "requested vfs (%d) > available vfs (%d). Continuing without SR_IOV\n", 3240 total_vfs, fw_enabled_sriov_vfs); 3241 err = -ENOMEM; 3242 goto disable_sriov; 3243 } 3244 mlx4_warn(dev, "Enabling SR-IOV with %d VFs\n", total_vfs); 3245 err = pci_enable_sriov(pdev, total_vfs); 3246 } 3247 if (err) { 3248 mlx4_err(dev, "Failed to enable SR-IOV, continuing without SR-IOV (err = %d)\n", 3249 err); 3250 goto disable_sriov; 3251 } else { 3252 mlx4_warn(dev, "Running in master mode\n"); 3253 dev_flags |= MLX4_FLAG_SRIOV | 3254 MLX4_FLAG_MASTER; 3255 dev_flags &= ~MLX4_FLAG_SLAVE; 3256 dev->persist->num_vfs = total_vfs; 3257 } 3258 return dev_flags; 3259 3260 disable_sriov: 3261 atomic_dec(&pf_loading); 3262 free_mem: 3263 dev->persist->num_vfs = 0; 3264 kfree(dev->dev_vfs); 3265 dev->dev_vfs = NULL; 3266 return dev_flags & ~MLX4_FLAG_MASTER; 3267 } 3268 3269 enum { 3270 MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64 = -1, 3271 }; 3272 3273 static int mlx4_check_dev_cap(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap, 3274 int *nvfs) 3275 { 3276 int requested_vfs = nvfs[0] + nvfs[1] + nvfs[2]; 3277 /* Checking for 64 VFs as a limitation of CX2 */ 3278 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_80_VFS) && 3279 requested_vfs >= 64) { 3280 mlx4_err(dev, "Requested %d VFs, but FW does not support more than 64\n", 3281 requested_vfs); 3282 return MLX4_DEV_CAP_CHECK_NUM_VFS_ABOVE_64; 3283 } 3284 return 0; 3285 } 3286 3287 static int mlx4_pci_enable_device(struct mlx4_dev *dev) 3288 { 3289 struct pci_dev *pdev = dev->persist->pdev; 3290 int err = 0; 3291 3292 mutex_lock(&dev->persist->pci_status_mutex); 3293 if (dev->persist->pci_status == MLX4_PCI_STATUS_DISABLED) { 3294 err = pci_enable_device(pdev); 3295 if (!err) 3296 dev->persist->pci_status = MLX4_PCI_STATUS_ENABLED; 3297 } 3298 mutex_unlock(&dev->persist->pci_status_mutex); 3299 3300 return err; 3301 } 3302 3303 static void mlx4_pci_disable_device(struct mlx4_dev *dev) 3304 { 3305 struct pci_dev *pdev = dev->persist->pdev; 3306 3307 mutex_lock(&dev->persist->pci_status_mutex); 3308 if (dev->persist->pci_status == MLX4_PCI_STATUS_ENABLED) { 3309 pci_disable_device(pdev); 3310 dev->persist->pci_status = MLX4_PCI_STATUS_DISABLED; 3311 } 3312 mutex_unlock(&dev->persist->pci_status_mutex); 3313 } 3314 3315 static int mlx4_load_one(struct pci_dev *pdev, int pci_dev_data, 3316 int total_vfs, int *nvfs, struct mlx4_priv *priv, 3317 int reset_flow) 3318 { 3319 struct mlx4_dev *dev; 3320 unsigned sum = 0; 3321 int err; 3322 int port; 3323 int i; 3324 struct mlx4_dev_cap *dev_cap = NULL; 3325 int existing_vfs = 0; 3326 3327 dev = &priv->dev; 3328 3329 INIT_LIST_HEAD(&priv->ctx_list); 3330 spin_lock_init(&priv->ctx_lock); 3331 3332 mutex_init(&priv->port_mutex); 3333 mutex_init(&priv->bond_mutex); 3334 3335 INIT_LIST_HEAD(&priv->pgdir_list); 3336 mutex_init(&priv->pgdir_mutex); 3337 spin_lock_init(&priv->cmd.context_lock); 3338 3339 INIT_LIST_HEAD(&priv->bf_list); 3340 mutex_init(&priv->bf_mutex); 3341 3342 dev->rev_id = pdev->revision; 3343 dev->numa_node = dev_to_node(&pdev->dev); 3344 3345 /* Detect if this device is a virtual function */ 3346 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) { 3347 mlx4_warn(dev, "Detected virtual function - running in slave mode\n"); 3348 dev->flags |= MLX4_FLAG_SLAVE; 3349 } else { 3350 /* We reset the device and enable SRIOV only for physical 3351 * devices. Try to claim ownership on the device; 3352 * if already taken, skip -- do not allow multiple PFs */ 3353 err = mlx4_get_ownership(dev); 3354 if (err) { 3355 if (err < 0) 3356 return err; 3357 else { 3358 mlx4_warn(dev, "Multiple PFs not yet supported - Skipping PF\n"); 3359 return -EINVAL; 3360 } 3361 } 3362 3363 atomic_set(&priv->opreq_count, 0); 3364 INIT_WORK(&priv->opreq_task, mlx4_opreq_action); 3365 3366 /* 3367 * Now reset the HCA before we touch the PCI capabilities or 3368 * attempt a firmware command, since a boot ROM may have left 3369 * the HCA in an undefined state. 3370 */ 3371 err = mlx4_reset(dev); 3372 if (err) { 3373 mlx4_err(dev, "Failed to reset HCA, aborting\n"); 3374 goto err_sriov; 3375 } 3376 3377 if (total_vfs) { 3378 dev->flags = MLX4_FLAG_MASTER; 3379 existing_vfs = pci_num_vf(pdev); 3380 if (existing_vfs) 3381 dev->flags |= MLX4_FLAG_SRIOV; 3382 dev->persist->num_vfs = total_vfs; 3383 } 3384 } 3385 3386 /* on load remove any previous indication of internal error, 3387 * device is up. 3388 */ 3389 dev->persist->state = MLX4_DEVICE_STATE_UP; 3390 3391 slave_start: 3392 err = mlx4_cmd_init(dev); 3393 if (err) { 3394 mlx4_err(dev, "Failed to init command interface, aborting\n"); 3395 goto err_sriov; 3396 } 3397 3398 /* In slave functions, the communication channel must be initialized 3399 * before posting commands. Also, init num_slaves before calling 3400 * mlx4_init_hca */ 3401 if (mlx4_is_mfunc(dev)) { 3402 if (mlx4_is_master(dev)) { 3403 dev->num_slaves = MLX4_MAX_NUM_SLAVES; 3404 3405 } else { 3406 dev->num_slaves = 0; 3407 err = mlx4_multi_func_init(dev); 3408 if (err) { 3409 mlx4_err(dev, "Failed to init slave mfunc interface, aborting\n"); 3410 goto err_cmd; 3411 } 3412 } 3413 } 3414 3415 err = mlx4_init_fw(dev); 3416 if (err) { 3417 mlx4_err(dev, "Failed to init fw, aborting.\n"); 3418 goto err_mfunc; 3419 } 3420 3421 if (mlx4_is_master(dev)) { 3422 /* when we hit the goto slave_start below, dev_cap already initialized */ 3423 if (!dev_cap) { 3424 dev_cap = kzalloc(sizeof(*dev_cap), GFP_KERNEL); 3425 3426 if (!dev_cap) { 3427 err = -ENOMEM; 3428 goto err_fw; 3429 } 3430 3431 err = mlx4_QUERY_DEV_CAP(dev, dev_cap); 3432 if (err) { 3433 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n"); 3434 goto err_fw; 3435 } 3436 3437 if (mlx4_check_dev_cap(dev, dev_cap, nvfs)) 3438 goto err_fw; 3439 3440 if (!(dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) { 3441 u64 dev_flags = mlx4_enable_sriov(dev, pdev, 3442 total_vfs, 3443 existing_vfs, 3444 reset_flow); 3445 3446 mlx4_close_fw(dev); 3447 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL); 3448 dev->flags = dev_flags; 3449 if (!SRIOV_VALID_STATE(dev->flags)) { 3450 mlx4_err(dev, "Invalid SRIOV state\n"); 3451 goto err_sriov; 3452 } 3453 err = mlx4_reset(dev); 3454 if (err) { 3455 mlx4_err(dev, "Failed to reset HCA, aborting.\n"); 3456 goto err_sriov; 3457 } 3458 goto slave_start; 3459 } 3460 } else { 3461 /* Legacy mode FW requires SRIOV to be enabled before 3462 * doing QUERY_DEV_CAP, since max_eq's value is different if 3463 * SRIOV is enabled. 3464 */ 3465 memset(dev_cap, 0, sizeof(*dev_cap)); 3466 err = mlx4_QUERY_DEV_CAP(dev, dev_cap); 3467 if (err) { 3468 mlx4_err(dev, "QUERY_DEV_CAP command failed, aborting.\n"); 3469 goto err_fw; 3470 } 3471 3472 if (mlx4_check_dev_cap(dev, dev_cap, nvfs)) 3473 goto err_fw; 3474 } 3475 } 3476 3477 err = mlx4_init_hca(dev); 3478 if (err) { 3479 if (err == -EACCES) { 3480 /* Not primary Physical function 3481 * Running in slave mode */ 3482 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL); 3483 /* We're not a PF */ 3484 if (dev->flags & MLX4_FLAG_SRIOV) { 3485 if (!existing_vfs) 3486 pci_disable_sriov(pdev); 3487 if (mlx4_is_master(dev) && !reset_flow) 3488 atomic_dec(&pf_loading); 3489 dev->flags &= ~MLX4_FLAG_SRIOV; 3490 } 3491 if (!mlx4_is_slave(dev)) 3492 mlx4_free_ownership(dev); 3493 dev->flags |= MLX4_FLAG_SLAVE; 3494 dev->flags &= ~MLX4_FLAG_MASTER; 3495 goto slave_start; 3496 } else 3497 goto err_fw; 3498 } 3499 3500 if (mlx4_is_master(dev) && (dev_cap->flags2 & MLX4_DEV_CAP_FLAG2_SYS_EQS)) { 3501 u64 dev_flags = mlx4_enable_sriov(dev, pdev, total_vfs, 3502 existing_vfs, reset_flow); 3503 3504 if ((dev->flags ^ dev_flags) & (MLX4_FLAG_MASTER | MLX4_FLAG_SLAVE)) { 3505 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_VHCR); 3506 dev->flags = dev_flags; 3507 err = mlx4_cmd_init(dev); 3508 if (err) { 3509 /* Only VHCR is cleaned up, so could still 3510 * send FW commands 3511 */ 3512 mlx4_err(dev, "Failed to init VHCR command interface, aborting\n"); 3513 goto err_close; 3514 } 3515 } else { 3516 dev->flags = dev_flags; 3517 } 3518 3519 if (!SRIOV_VALID_STATE(dev->flags)) { 3520 mlx4_err(dev, "Invalid SRIOV state\n"); 3521 goto err_close; 3522 } 3523 } 3524 3525 /* check if the device is functioning at its maximum possible speed. 3526 * No return code for this call, just warn the user in case of PCI 3527 * express device capabilities are under-satisfied by the bus. 3528 */ 3529 if (!mlx4_is_slave(dev)) 3530 pcie_print_link_status(dev->persist->pdev); 3531 3532 /* In master functions, the communication channel must be initialized 3533 * after obtaining its address from fw */ 3534 if (mlx4_is_master(dev)) { 3535 if (dev->caps.num_ports < 2 && 3536 num_vfs_argc > 1) { 3537 err = -EINVAL; 3538 mlx4_err(dev, 3539 "Error: Trying to configure VFs on port 2, but HCA has only %d physical ports\n", 3540 dev->caps.num_ports); 3541 goto err_close; 3542 } 3543 memcpy(dev->persist->nvfs, nvfs, sizeof(dev->persist->nvfs)); 3544 3545 for (i = 0; 3546 i < sizeof(dev->persist->nvfs)/ 3547 sizeof(dev->persist->nvfs[0]); i++) { 3548 unsigned j; 3549 3550 for (j = 0; j < dev->persist->nvfs[i]; ++sum, ++j) { 3551 dev->dev_vfs[sum].min_port = i < 2 ? i + 1 : 1; 3552 dev->dev_vfs[sum].n_ports = i < 2 ? 1 : 3553 dev->caps.num_ports; 3554 } 3555 } 3556 3557 /* In master functions, the communication channel 3558 * must be initialized after obtaining its address from fw 3559 */ 3560 err = mlx4_multi_func_init(dev); 3561 if (err) { 3562 mlx4_err(dev, "Failed to init master mfunc interface, aborting.\n"); 3563 goto err_close; 3564 } 3565 } 3566 3567 err = mlx4_alloc_eq_table(dev); 3568 if (err) 3569 goto err_master_mfunc; 3570 3571 bitmap_zero(priv->msix_ctl.pool_bm, MAX_MSIX); 3572 mutex_init(&priv->msix_ctl.pool_lock); 3573 3574 mlx4_enable_msi_x(dev); 3575 if ((mlx4_is_mfunc(dev)) && 3576 !(dev->flags & MLX4_FLAG_MSI_X)) { 3577 err = -EOPNOTSUPP; 3578 mlx4_err(dev, "INTx is not supported in multi-function mode, aborting\n"); 3579 goto err_free_eq; 3580 } 3581 3582 if (!mlx4_is_slave(dev)) { 3583 err = mlx4_init_steering(dev); 3584 if (err) 3585 goto err_disable_msix; 3586 } 3587 3588 mlx4_init_quotas(dev); 3589 3590 err = mlx4_setup_hca(dev); 3591 if (err == -EBUSY && (dev->flags & MLX4_FLAG_MSI_X) && 3592 !mlx4_is_mfunc(dev)) { 3593 dev->flags &= ~MLX4_FLAG_MSI_X; 3594 dev->caps.num_comp_vectors = 1; 3595 pci_disable_msix(pdev); 3596 err = mlx4_setup_hca(dev); 3597 } 3598 3599 if (err) 3600 goto err_steer; 3601 3602 /* When PF resources are ready arm its comm channel to enable 3603 * getting commands 3604 */ 3605 if (mlx4_is_master(dev)) { 3606 err = mlx4_ARM_COMM_CHANNEL(dev); 3607 if (err) { 3608 mlx4_err(dev, " Failed to arm comm channel eq: %x\n", 3609 err); 3610 goto err_steer; 3611 } 3612 } 3613 3614 for (port = 1; port <= dev->caps.num_ports; port++) { 3615 err = mlx4_init_port_info(dev, port); 3616 if (err) 3617 goto err_port; 3618 } 3619 3620 priv->v2p.port1 = 1; 3621 priv->v2p.port2 = 2; 3622 3623 err = mlx4_register_device(dev); 3624 if (err) 3625 goto err_port; 3626 3627 mlx4_request_modules(dev); 3628 3629 mlx4_sense_init(dev); 3630 mlx4_start_sense(dev); 3631 3632 priv->removed = 0; 3633 3634 if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow) 3635 atomic_dec(&pf_loading); 3636 3637 kfree(dev_cap); 3638 return 0; 3639 3640 err_port: 3641 for (--port; port >= 1; --port) 3642 mlx4_cleanup_port_info(&priv->port[port]); 3643 3644 mlx4_cleanup_default_counters(dev); 3645 if (!mlx4_is_slave(dev)) 3646 mlx4_cleanup_counters_table(dev); 3647 mlx4_cleanup_qp_table(dev); 3648 mlx4_cleanup_srq_table(dev); 3649 mlx4_cleanup_cq_table(dev); 3650 mlx4_cmd_use_polling(dev); 3651 mlx4_cleanup_eq_table(dev); 3652 mlx4_cleanup_mcg_table(dev); 3653 mlx4_cleanup_mr_table(dev); 3654 mlx4_cleanup_xrcd_table(dev); 3655 mlx4_cleanup_pd_table(dev); 3656 mlx4_cleanup_uar_table(dev); 3657 3658 err_steer: 3659 if (!mlx4_is_slave(dev)) 3660 mlx4_clear_steering(dev); 3661 3662 err_disable_msix: 3663 if (dev->flags & MLX4_FLAG_MSI_X) 3664 pci_disable_msix(pdev); 3665 3666 err_free_eq: 3667 mlx4_free_eq_table(dev); 3668 3669 err_master_mfunc: 3670 if (mlx4_is_master(dev)) { 3671 mlx4_free_resource_tracker(dev, RES_TR_FREE_STRUCTS_ONLY); 3672 mlx4_multi_func_cleanup(dev); 3673 } 3674 3675 if (mlx4_is_slave(dev)) 3676 mlx4_slave_destroy_special_qp_cap(dev); 3677 3678 err_close: 3679 mlx4_close_hca(dev); 3680 3681 err_fw: 3682 mlx4_close_fw(dev); 3683 3684 err_mfunc: 3685 if (mlx4_is_slave(dev)) 3686 mlx4_multi_func_cleanup(dev); 3687 3688 err_cmd: 3689 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL); 3690 3691 err_sriov: 3692 if (dev->flags & MLX4_FLAG_SRIOV && !existing_vfs) { 3693 pci_disable_sriov(pdev); 3694 dev->flags &= ~MLX4_FLAG_SRIOV; 3695 } 3696 3697 if (mlx4_is_master(dev) && dev->persist->num_vfs && !reset_flow) 3698 atomic_dec(&pf_loading); 3699 3700 kfree(priv->dev.dev_vfs); 3701 3702 if (!mlx4_is_slave(dev)) 3703 mlx4_free_ownership(dev); 3704 3705 kfree(dev_cap); 3706 return err; 3707 } 3708 3709 static int __mlx4_init_one(struct pci_dev *pdev, int pci_dev_data, 3710 struct mlx4_priv *priv) 3711 { 3712 int err; 3713 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0}; 3714 int prb_vf[MLX4_MAX_PORTS + 1] = {0, 0, 0}; 3715 const int param_map[MLX4_MAX_PORTS + 1][MLX4_MAX_PORTS + 1] = { 3716 {2, 0, 0}, {0, 1, 2}, {0, 1, 2} }; 3717 unsigned total_vfs = 0; 3718 unsigned int i; 3719 3720 pr_info(DRV_NAME ": Initializing %s\n", pci_name(pdev)); 3721 3722 err = mlx4_pci_enable_device(&priv->dev); 3723 if (err) { 3724 dev_err(&pdev->dev, "Cannot enable PCI device, aborting\n"); 3725 return err; 3726 } 3727 3728 /* Due to requirement that all VFs and the PF are *guaranteed* 2 MACS 3729 * per port, we must limit the number of VFs to 63 (since their are 3730 * 128 MACs) 3731 */ 3732 for (i = 0; i < ARRAY_SIZE(nvfs) && i < num_vfs_argc; 3733 total_vfs += nvfs[param_map[num_vfs_argc - 1][i]], i++) { 3734 nvfs[param_map[num_vfs_argc - 1][i]] = num_vfs[i]; 3735 if (nvfs[i] < 0) { 3736 dev_err(&pdev->dev, "num_vfs module parameter cannot be negative\n"); 3737 err = -EINVAL; 3738 goto err_disable_pdev; 3739 } 3740 } 3741 for (i = 0; i < ARRAY_SIZE(prb_vf) && i < probe_vfs_argc; 3742 i++) { 3743 prb_vf[param_map[probe_vfs_argc - 1][i]] = probe_vf[i]; 3744 if (prb_vf[i] < 0 || prb_vf[i] > nvfs[i]) { 3745 dev_err(&pdev->dev, "probe_vf module parameter cannot be negative or greater than num_vfs\n"); 3746 err = -EINVAL; 3747 goto err_disable_pdev; 3748 } 3749 } 3750 if (total_vfs > MLX4_MAX_NUM_VF) { 3751 dev_err(&pdev->dev, 3752 "Requested more VF's (%d) than allowed by hw (%d)\n", 3753 total_vfs, MLX4_MAX_NUM_VF); 3754 err = -EINVAL; 3755 goto err_disable_pdev; 3756 } 3757 3758 for (i = 0; i < MLX4_MAX_PORTS; i++) { 3759 if (nvfs[i] + nvfs[2] > MLX4_MAX_NUM_VF_P_PORT) { 3760 dev_err(&pdev->dev, 3761 "Requested more VF's (%d) for port (%d) than allowed by driver (%d)\n", 3762 nvfs[i] + nvfs[2], i + 1, 3763 MLX4_MAX_NUM_VF_P_PORT); 3764 err = -EINVAL; 3765 goto err_disable_pdev; 3766 } 3767 } 3768 3769 /* Check for BARs. */ 3770 if (!(pci_dev_data & MLX4_PCI_DEV_IS_VF) && 3771 !(pci_resource_flags(pdev, 0) & IORESOURCE_MEM)) { 3772 dev_err(&pdev->dev, "Missing DCS, aborting (driver_data: 0x%x, pci_resource_flags(pdev, 0):0x%lx)\n", 3773 pci_dev_data, pci_resource_flags(pdev, 0)); 3774 err = -ENODEV; 3775 goto err_disable_pdev; 3776 } 3777 if (!(pci_resource_flags(pdev, 2) & IORESOURCE_MEM)) { 3778 dev_err(&pdev->dev, "Missing UAR, aborting\n"); 3779 err = -ENODEV; 3780 goto err_disable_pdev; 3781 } 3782 3783 err = pci_request_regions(pdev, DRV_NAME); 3784 if (err) { 3785 dev_err(&pdev->dev, "Couldn't get PCI resources, aborting\n"); 3786 goto err_disable_pdev; 3787 } 3788 3789 pci_set_master(pdev); 3790 3791 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 3792 if (err) { 3793 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit PCI DMA mask\n"); 3794 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 3795 if (err) { 3796 dev_err(&pdev->dev, "Can't set PCI DMA mask, aborting\n"); 3797 goto err_release_regions; 3798 } 3799 } 3800 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); 3801 if (err) { 3802 dev_warn(&pdev->dev, "Warning: couldn't set 64-bit consistent PCI DMA mask\n"); 3803 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 3804 if (err) { 3805 dev_err(&pdev->dev, "Can't set consistent PCI DMA mask, aborting\n"); 3806 goto err_release_regions; 3807 } 3808 } 3809 3810 /* Allow large DMA segments, up to the firmware limit of 1 GB */ 3811 dma_set_max_seg_size(&pdev->dev, 1024 * 1024 * 1024); 3812 /* Detect if this device is a virtual function */ 3813 if (pci_dev_data & MLX4_PCI_DEV_IS_VF) { 3814 /* When acting as pf, we normally skip vfs unless explicitly 3815 * requested to probe them. 3816 */ 3817 if (total_vfs) { 3818 unsigned vfs_offset = 0; 3819 3820 for (i = 0; i < ARRAY_SIZE(nvfs) && 3821 vfs_offset + nvfs[i] < extended_func_num(pdev); 3822 vfs_offset += nvfs[i], i++) 3823 ; 3824 if (i == ARRAY_SIZE(nvfs)) { 3825 err = -ENODEV; 3826 goto err_release_regions; 3827 } 3828 if ((extended_func_num(pdev) - vfs_offset) 3829 > prb_vf[i]) { 3830 dev_warn(&pdev->dev, "Skipping virtual function:%d\n", 3831 extended_func_num(pdev)); 3832 err = -ENODEV; 3833 goto err_release_regions; 3834 } 3835 } 3836 } 3837 3838 err = mlx4_crdump_init(&priv->dev); 3839 if (err) 3840 goto err_release_regions; 3841 3842 err = mlx4_catas_init(&priv->dev); 3843 if (err) 3844 goto err_crdump; 3845 3846 err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 0); 3847 if (err) 3848 goto err_catas; 3849 3850 return 0; 3851 3852 err_catas: 3853 mlx4_catas_end(&priv->dev); 3854 3855 err_crdump: 3856 mlx4_crdump_end(&priv->dev); 3857 3858 err_release_regions: 3859 pci_release_regions(pdev); 3860 3861 err_disable_pdev: 3862 mlx4_pci_disable_device(&priv->dev); 3863 return err; 3864 } 3865 3866 static int mlx4_devlink_port_type_set(struct devlink_port *devlink_port, 3867 enum devlink_port_type port_type) 3868 { 3869 struct mlx4_port_info *info = container_of(devlink_port, 3870 struct mlx4_port_info, 3871 devlink_port); 3872 enum mlx4_port_type mlx4_port_type; 3873 3874 switch (port_type) { 3875 case DEVLINK_PORT_TYPE_AUTO: 3876 mlx4_port_type = MLX4_PORT_TYPE_AUTO; 3877 break; 3878 case DEVLINK_PORT_TYPE_ETH: 3879 mlx4_port_type = MLX4_PORT_TYPE_ETH; 3880 break; 3881 case DEVLINK_PORT_TYPE_IB: 3882 mlx4_port_type = MLX4_PORT_TYPE_IB; 3883 break; 3884 default: 3885 return -EOPNOTSUPP; 3886 } 3887 3888 return __set_port_type(info, mlx4_port_type); 3889 } 3890 3891 static void mlx4_devlink_param_load_driverinit_values(struct devlink *devlink) 3892 { 3893 struct mlx4_priv *priv = devlink_priv(devlink); 3894 struct mlx4_dev *dev = &priv->dev; 3895 struct mlx4_fw_crdump *crdump = &dev->persist->crdump; 3896 union devlink_param_value saved_value; 3897 int err; 3898 3899 err = devlink_param_driverinit_value_get(devlink, 3900 DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET, 3901 &saved_value); 3902 if (!err && mlx4_internal_err_reset != saved_value.vbool) { 3903 mlx4_internal_err_reset = saved_value.vbool; 3904 /* Notify on value changed on runtime configuration mode */ 3905 devlink_param_value_changed(devlink, 3906 DEVLINK_PARAM_GENERIC_ID_INT_ERR_RESET); 3907 } 3908 err = devlink_param_driverinit_value_get(devlink, 3909 DEVLINK_PARAM_GENERIC_ID_MAX_MACS, 3910 &saved_value); 3911 if (!err) 3912 log_num_mac = order_base_2(saved_value.vu32); 3913 err = devlink_param_driverinit_value_get(devlink, 3914 MLX4_DEVLINK_PARAM_ID_ENABLE_64B_CQE_EQE, 3915 &saved_value); 3916 if (!err) 3917 enable_64b_cqe_eqe = saved_value.vbool; 3918 err = devlink_param_driverinit_value_get(devlink, 3919 MLX4_DEVLINK_PARAM_ID_ENABLE_4K_UAR, 3920 &saved_value); 3921 if (!err) 3922 enable_4k_uar = saved_value.vbool; 3923 err = devlink_param_driverinit_value_get(devlink, 3924 DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT, 3925 &saved_value); 3926 if (!err && crdump->snapshot_enable != saved_value.vbool) { 3927 crdump->snapshot_enable = saved_value.vbool; 3928 devlink_param_value_changed(devlink, 3929 DEVLINK_PARAM_GENERIC_ID_REGION_SNAPSHOT); 3930 } 3931 } 3932 3933 static void mlx4_restart_one_down(struct pci_dev *pdev); 3934 static int mlx4_restart_one_up(struct pci_dev *pdev, bool reload, 3935 struct devlink *devlink); 3936 3937 static int mlx4_devlink_reload_down(struct devlink *devlink, bool netns_change, 3938 struct netlink_ext_ack *extack) 3939 { 3940 struct mlx4_priv *priv = devlink_priv(devlink); 3941 struct mlx4_dev *dev = &priv->dev; 3942 struct mlx4_dev_persistent *persist = dev->persist; 3943 3944 if (netns_change) { 3945 NL_SET_ERR_MSG_MOD(extack, "Namespace change is not supported"); 3946 return -EOPNOTSUPP; 3947 } 3948 if (persist->num_vfs) 3949 mlx4_warn(persist->dev, "Reload performed on PF, will cause reset on operating Virtual Functions\n"); 3950 mlx4_restart_one_down(persist->pdev); 3951 return 0; 3952 } 3953 3954 static int mlx4_devlink_reload_up(struct devlink *devlink, 3955 struct netlink_ext_ack *extack) 3956 { 3957 struct mlx4_priv *priv = devlink_priv(devlink); 3958 struct mlx4_dev *dev = &priv->dev; 3959 struct mlx4_dev_persistent *persist = dev->persist; 3960 int err; 3961 3962 err = mlx4_restart_one_up(persist->pdev, true, devlink); 3963 if (err) 3964 mlx4_err(persist->dev, "mlx4_restart_one_up failed, ret=%d\n", 3965 err); 3966 3967 return err; 3968 } 3969 3970 static const struct devlink_ops mlx4_devlink_ops = { 3971 .port_type_set = mlx4_devlink_port_type_set, 3972 .reload_down = mlx4_devlink_reload_down, 3973 .reload_up = mlx4_devlink_reload_up, 3974 }; 3975 3976 static int mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id) 3977 { 3978 struct devlink *devlink; 3979 struct mlx4_priv *priv; 3980 struct mlx4_dev *dev; 3981 int ret; 3982 3983 printk_once(KERN_INFO "%s", mlx4_version); 3984 3985 devlink = devlink_alloc(&mlx4_devlink_ops, sizeof(*priv)); 3986 if (!devlink) 3987 return -ENOMEM; 3988 priv = devlink_priv(devlink); 3989 3990 dev = &priv->dev; 3991 dev->persist = kzalloc(sizeof(*dev->persist), GFP_KERNEL); 3992 if (!dev->persist) { 3993 ret = -ENOMEM; 3994 goto err_devlink_free; 3995 } 3996 dev->persist->pdev = pdev; 3997 dev->persist->dev = dev; 3998 pci_set_drvdata(pdev, dev->persist); 3999 priv->pci_dev_data = id->driver_data; 4000 mutex_init(&dev->persist->device_state_mutex); 4001 mutex_init(&dev->persist->interface_state_mutex); 4002 mutex_init(&dev->persist->pci_status_mutex); 4003 4004 ret = devlink_register(devlink, &pdev->dev); 4005 if (ret) 4006 goto err_persist_free; 4007 ret = devlink_params_register(devlink, mlx4_devlink_params, 4008 ARRAY_SIZE(mlx4_devlink_params)); 4009 if (ret) 4010 goto err_devlink_unregister; 4011 mlx4_devlink_set_params_init_values(devlink); 4012 ret = __mlx4_init_one(pdev, id->driver_data, priv); 4013 if (ret) 4014 goto err_params_unregister; 4015 4016 devlink_params_publish(devlink); 4017 devlink_reload_enable(devlink); 4018 pci_save_state(pdev); 4019 return 0; 4020 4021 err_params_unregister: 4022 devlink_params_unregister(devlink, mlx4_devlink_params, 4023 ARRAY_SIZE(mlx4_devlink_params)); 4024 err_devlink_unregister: 4025 devlink_unregister(devlink); 4026 err_persist_free: 4027 kfree(dev->persist); 4028 err_devlink_free: 4029 devlink_free(devlink); 4030 return ret; 4031 } 4032 4033 static void mlx4_clean_dev(struct mlx4_dev *dev) 4034 { 4035 struct mlx4_dev_persistent *persist = dev->persist; 4036 struct mlx4_priv *priv = mlx4_priv(dev); 4037 unsigned long flags = (dev->flags & RESET_PERSIST_MASK_FLAGS); 4038 4039 memset(priv, 0, sizeof(*priv)); 4040 priv->dev.persist = persist; 4041 priv->dev.flags = flags; 4042 } 4043 4044 static void mlx4_unload_one(struct pci_dev *pdev) 4045 { 4046 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4047 struct mlx4_dev *dev = persist->dev; 4048 struct mlx4_priv *priv = mlx4_priv(dev); 4049 int pci_dev_data; 4050 int p, i; 4051 4052 if (priv->removed) 4053 return; 4054 4055 /* saving current ports type for further use */ 4056 for (i = 0; i < dev->caps.num_ports; i++) { 4057 dev->persist->curr_port_type[i] = dev->caps.port_type[i + 1]; 4058 dev->persist->curr_port_poss_type[i] = dev->caps. 4059 possible_type[i + 1]; 4060 } 4061 4062 pci_dev_data = priv->pci_dev_data; 4063 4064 mlx4_stop_sense(dev); 4065 mlx4_unregister_device(dev); 4066 4067 for (p = 1; p <= dev->caps.num_ports; p++) { 4068 mlx4_cleanup_port_info(&priv->port[p]); 4069 mlx4_CLOSE_PORT(dev, p); 4070 } 4071 4072 if (mlx4_is_master(dev)) 4073 mlx4_free_resource_tracker(dev, 4074 RES_TR_FREE_SLAVES_ONLY); 4075 4076 mlx4_cleanup_default_counters(dev); 4077 if (!mlx4_is_slave(dev)) 4078 mlx4_cleanup_counters_table(dev); 4079 mlx4_cleanup_qp_table(dev); 4080 mlx4_cleanup_srq_table(dev); 4081 mlx4_cleanup_cq_table(dev); 4082 mlx4_cmd_use_polling(dev); 4083 mlx4_cleanup_eq_table(dev); 4084 mlx4_cleanup_mcg_table(dev); 4085 mlx4_cleanup_mr_table(dev); 4086 mlx4_cleanup_xrcd_table(dev); 4087 mlx4_cleanup_pd_table(dev); 4088 4089 if (mlx4_is_master(dev)) 4090 mlx4_free_resource_tracker(dev, 4091 RES_TR_FREE_STRUCTS_ONLY); 4092 4093 iounmap(priv->kar); 4094 mlx4_uar_free(dev, &priv->driver_uar); 4095 mlx4_cleanup_uar_table(dev); 4096 if (!mlx4_is_slave(dev)) 4097 mlx4_clear_steering(dev); 4098 mlx4_free_eq_table(dev); 4099 if (mlx4_is_master(dev)) 4100 mlx4_multi_func_cleanup(dev); 4101 mlx4_close_hca(dev); 4102 mlx4_close_fw(dev); 4103 if (mlx4_is_slave(dev)) 4104 mlx4_multi_func_cleanup(dev); 4105 mlx4_cmd_cleanup(dev, MLX4_CMD_CLEANUP_ALL); 4106 4107 if (dev->flags & MLX4_FLAG_MSI_X) 4108 pci_disable_msix(pdev); 4109 4110 if (!mlx4_is_slave(dev)) 4111 mlx4_free_ownership(dev); 4112 4113 mlx4_slave_destroy_special_qp_cap(dev); 4114 kfree(dev->dev_vfs); 4115 4116 mlx4_clean_dev(dev); 4117 priv->pci_dev_data = pci_dev_data; 4118 priv->removed = 1; 4119 } 4120 4121 static void mlx4_remove_one(struct pci_dev *pdev) 4122 { 4123 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4124 struct mlx4_dev *dev = persist->dev; 4125 struct mlx4_priv *priv = mlx4_priv(dev); 4126 struct devlink *devlink = priv_to_devlink(priv); 4127 int active_vfs = 0; 4128 4129 devlink_reload_disable(devlink); 4130 4131 if (mlx4_is_slave(dev)) 4132 persist->interface_state |= MLX4_INTERFACE_STATE_NOWAIT; 4133 4134 mutex_lock(&persist->interface_state_mutex); 4135 persist->interface_state |= MLX4_INTERFACE_STATE_DELETION; 4136 mutex_unlock(&persist->interface_state_mutex); 4137 4138 /* Disabling SR-IOV is not allowed while there are active vf's */ 4139 if (mlx4_is_master(dev) && dev->flags & MLX4_FLAG_SRIOV) { 4140 active_vfs = mlx4_how_many_lives_vf(dev); 4141 if (active_vfs) { 4142 pr_warn("Removing PF when there are active VF's !!\n"); 4143 pr_warn("Will not disable SR-IOV.\n"); 4144 } 4145 } 4146 4147 /* device marked to be under deletion running now without the lock 4148 * letting other tasks to be terminated 4149 */ 4150 if (persist->interface_state & MLX4_INTERFACE_STATE_UP) 4151 mlx4_unload_one(pdev); 4152 else 4153 mlx4_info(dev, "%s: interface is down\n", __func__); 4154 mlx4_catas_end(dev); 4155 mlx4_crdump_end(dev); 4156 if (dev->flags & MLX4_FLAG_SRIOV && !active_vfs) { 4157 mlx4_warn(dev, "Disabling SR-IOV\n"); 4158 pci_disable_sriov(pdev); 4159 } 4160 4161 pci_release_regions(pdev); 4162 mlx4_pci_disable_device(dev); 4163 devlink_params_unregister(devlink, mlx4_devlink_params, 4164 ARRAY_SIZE(mlx4_devlink_params)); 4165 devlink_unregister(devlink); 4166 kfree(dev->persist); 4167 devlink_free(devlink); 4168 } 4169 4170 static int restore_current_port_types(struct mlx4_dev *dev, 4171 enum mlx4_port_type *types, 4172 enum mlx4_port_type *poss_types) 4173 { 4174 struct mlx4_priv *priv = mlx4_priv(dev); 4175 int err, i; 4176 4177 mlx4_stop_sense(dev); 4178 4179 mutex_lock(&priv->port_mutex); 4180 for (i = 0; i < dev->caps.num_ports; i++) 4181 dev->caps.possible_type[i + 1] = poss_types[i]; 4182 err = mlx4_change_port_types(dev, types); 4183 mlx4_start_sense(dev); 4184 mutex_unlock(&priv->port_mutex); 4185 4186 return err; 4187 } 4188 4189 static void mlx4_restart_one_down(struct pci_dev *pdev) 4190 { 4191 mlx4_unload_one(pdev); 4192 } 4193 4194 static int mlx4_restart_one_up(struct pci_dev *pdev, bool reload, 4195 struct devlink *devlink) 4196 { 4197 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4198 struct mlx4_dev *dev = persist->dev; 4199 struct mlx4_priv *priv = mlx4_priv(dev); 4200 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0}; 4201 int pci_dev_data, err, total_vfs; 4202 4203 pci_dev_data = priv->pci_dev_data; 4204 total_vfs = dev->persist->num_vfs; 4205 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs)); 4206 4207 if (reload) 4208 mlx4_devlink_param_load_driverinit_values(devlink); 4209 err = mlx4_load_one(pdev, pci_dev_data, total_vfs, nvfs, priv, 1); 4210 if (err) { 4211 mlx4_err(dev, "%s: ERROR: mlx4_load_one failed, pci_name=%s, err=%d\n", 4212 __func__, pci_name(pdev), err); 4213 return err; 4214 } 4215 4216 err = restore_current_port_types(dev, dev->persist->curr_port_type, 4217 dev->persist->curr_port_poss_type); 4218 if (err) 4219 mlx4_err(dev, "could not restore original port types (%d)\n", 4220 err); 4221 4222 return err; 4223 } 4224 4225 int mlx4_restart_one(struct pci_dev *pdev) 4226 { 4227 mlx4_restart_one_down(pdev); 4228 return mlx4_restart_one_up(pdev, false, NULL); 4229 } 4230 4231 #define MLX_SP(id) { PCI_VDEVICE(MELLANOX, id), MLX4_PCI_DEV_FORCE_SENSE_PORT } 4232 #define MLX_VF(id) { PCI_VDEVICE(MELLANOX, id), MLX4_PCI_DEV_IS_VF } 4233 #define MLX_GN(id) { PCI_VDEVICE(MELLANOX, id), 0 } 4234 4235 static const struct pci_device_id mlx4_pci_table[] = { 4236 #ifdef CONFIG_MLX4_CORE_GEN2 4237 /* MT25408 "Hermon" */ 4238 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_SDR), /* SDR */ 4239 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_DDR), /* DDR */ 4240 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_QDR), /* QDR */ 4241 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_DDR_GEN2), /* DDR Gen2 */ 4242 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_QDR_GEN2), /* QDR Gen2 */ 4243 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_EN), /* EN 10GigE */ 4244 MLX_SP(PCI_DEVICE_ID_MELLANOX_HERMON_EN_GEN2), /* EN 10GigE Gen2 */ 4245 /* MT25458 ConnectX EN 10GBASE-T */ 4246 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN), 4247 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_T_GEN2), /* Gen2 */ 4248 /* MT26468 ConnectX EN 10GigE PCIe Gen2*/ 4249 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_GEN2), 4250 /* MT26438 ConnectX EN 40GigE PCIe Gen2 5GT/s */ 4251 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX_EN_5_GEN2), 4252 /* MT26478 ConnectX2 40GigE PCIe Gen2 */ 4253 MLX_SP(PCI_DEVICE_ID_MELLANOX_CONNECTX2), 4254 /* MT25400 Family [ConnectX-2] */ 4255 MLX_VF(0x1002), /* Virtual Function */ 4256 #endif /* CONFIG_MLX4_CORE_GEN2 */ 4257 /* MT27500 Family [ConnectX-3] */ 4258 MLX_GN(PCI_DEVICE_ID_MELLANOX_CONNECTX3), 4259 MLX_VF(0x1004), /* Virtual Function */ 4260 MLX_GN(0x1005), /* MT27510 Family */ 4261 MLX_GN(0x1006), /* MT27511 Family */ 4262 MLX_GN(PCI_DEVICE_ID_MELLANOX_CONNECTX3_PRO), /* MT27520 Family */ 4263 MLX_GN(0x1008), /* MT27521 Family */ 4264 MLX_GN(0x1009), /* MT27530 Family */ 4265 MLX_GN(0x100a), /* MT27531 Family */ 4266 MLX_GN(0x100b), /* MT27540 Family */ 4267 MLX_GN(0x100c), /* MT27541 Family */ 4268 MLX_GN(0x100d), /* MT27550 Family */ 4269 MLX_GN(0x100e), /* MT27551 Family */ 4270 MLX_GN(0x100f), /* MT27560 Family */ 4271 MLX_GN(0x1010), /* MT27561 Family */ 4272 4273 /* 4274 * See the mellanox_check_broken_intx_masking() quirk when 4275 * adding devices 4276 */ 4277 4278 { 0, } 4279 }; 4280 4281 MODULE_DEVICE_TABLE(pci, mlx4_pci_table); 4282 4283 static pci_ers_result_t mlx4_pci_err_detected(struct pci_dev *pdev, 4284 pci_channel_state_t state) 4285 { 4286 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4287 4288 mlx4_err(persist->dev, "mlx4_pci_err_detected was called\n"); 4289 mlx4_enter_error_state(persist); 4290 4291 mutex_lock(&persist->interface_state_mutex); 4292 if (persist->interface_state & MLX4_INTERFACE_STATE_UP) 4293 mlx4_unload_one(pdev); 4294 4295 mutex_unlock(&persist->interface_state_mutex); 4296 if (state == pci_channel_io_perm_failure) 4297 return PCI_ERS_RESULT_DISCONNECT; 4298 4299 mlx4_pci_disable_device(persist->dev); 4300 return PCI_ERS_RESULT_NEED_RESET; 4301 } 4302 4303 static pci_ers_result_t mlx4_pci_slot_reset(struct pci_dev *pdev) 4304 { 4305 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4306 struct mlx4_dev *dev = persist->dev; 4307 int err; 4308 4309 mlx4_err(dev, "mlx4_pci_slot_reset was called\n"); 4310 err = mlx4_pci_enable_device(dev); 4311 if (err) { 4312 mlx4_err(dev, "Can not re-enable device, err=%d\n", err); 4313 return PCI_ERS_RESULT_DISCONNECT; 4314 } 4315 4316 pci_set_master(pdev); 4317 pci_restore_state(pdev); 4318 pci_save_state(pdev); 4319 return PCI_ERS_RESULT_RECOVERED; 4320 } 4321 4322 static void mlx4_pci_resume(struct pci_dev *pdev) 4323 { 4324 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4325 struct mlx4_dev *dev = persist->dev; 4326 struct mlx4_priv *priv = mlx4_priv(dev); 4327 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0}; 4328 int total_vfs; 4329 int err; 4330 4331 mlx4_err(dev, "%s was called\n", __func__); 4332 total_vfs = dev->persist->num_vfs; 4333 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs)); 4334 4335 mutex_lock(&persist->interface_state_mutex); 4336 if (!(persist->interface_state & MLX4_INTERFACE_STATE_UP)) { 4337 err = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs, nvfs, 4338 priv, 1); 4339 if (err) { 4340 mlx4_err(dev, "%s: mlx4_load_one failed, err=%d\n", 4341 __func__, err); 4342 goto end; 4343 } 4344 4345 err = restore_current_port_types(dev, dev->persist-> 4346 curr_port_type, dev->persist-> 4347 curr_port_poss_type); 4348 if (err) 4349 mlx4_err(dev, "could not restore original port types (%d)\n", err); 4350 } 4351 end: 4352 mutex_unlock(&persist->interface_state_mutex); 4353 4354 } 4355 4356 static void mlx4_shutdown(struct pci_dev *pdev) 4357 { 4358 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4359 4360 mlx4_info(persist->dev, "mlx4_shutdown was called\n"); 4361 mutex_lock(&persist->interface_state_mutex); 4362 if (persist->interface_state & MLX4_INTERFACE_STATE_UP) 4363 mlx4_unload_one(pdev); 4364 mutex_unlock(&persist->interface_state_mutex); 4365 } 4366 4367 static const struct pci_error_handlers mlx4_err_handler = { 4368 .error_detected = mlx4_pci_err_detected, 4369 .slot_reset = mlx4_pci_slot_reset, 4370 .resume = mlx4_pci_resume, 4371 }; 4372 4373 static int mlx4_suspend(struct pci_dev *pdev, pm_message_t state) 4374 { 4375 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4376 struct mlx4_dev *dev = persist->dev; 4377 4378 mlx4_err(dev, "suspend was called\n"); 4379 mutex_lock(&persist->interface_state_mutex); 4380 if (persist->interface_state & MLX4_INTERFACE_STATE_UP) 4381 mlx4_unload_one(pdev); 4382 mutex_unlock(&persist->interface_state_mutex); 4383 4384 return 0; 4385 } 4386 4387 static int mlx4_resume(struct pci_dev *pdev) 4388 { 4389 struct mlx4_dev_persistent *persist = pci_get_drvdata(pdev); 4390 struct mlx4_dev *dev = persist->dev; 4391 struct mlx4_priv *priv = mlx4_priv(dev); 4392 int nvfs[MLX4_MAX_PORTS + 1] = {0, 0, 0}; 4393 int total_vfs; 4394 int ret = 0; 4395 4396 mlx4_err(dev, "resume was called\n"); 4397 total_vfs = dev->persist->num_vfs; 4398 memcpy(nvfs, dev->persist->nvfs, sizeof(dev->persist->nvfs)); 4399 4400 mutex_lock(&persist->interface_state_mutex); 4401 if (!(persist->interface_state & MLX4_INTERFACE_STATE_UP)) { 4402 ret = mlx4_load_one(pdev, priv->pci_dev_data, total_vfs, 4403 nvfs, priv, 1); 4404 if (!ret) { 4405 ret = restore_current_port_types(dev, 4406 dev->persist->curr_port_type, 4407 dev->persist->curr_port_poss_type); 4408 if (ret) 4409 mlx4_err(dev, "resume: could not restore original port types (%d)\n", ret); 4410 } 4411 } 4412 mutex_unlock(&persist->interface_state_mutex); 4413 4414 return ret; 4415 } 4416 4417 static struct pci_driver mlx4_driver = { 4418 .name = DRV_NAME, 4419 .id_table = mlx4_pci_table, 4420 .probe = mlx4_init_one, 4421 .shutdown = mlx4_shutdown, 4422 .remove = mlx4_remove_one, 4423 .suspend = mlx4_suspend, 4424 .resume = mlx4_resume, 4425 .err_handler = &mlx4_err_handler, 4426 }; 4427 4428 static int __init mlx4_verify_params(void) 4429 { 4430 if (msi_x < 0) { 4431 pr_warn("mlx4_core: bad msi_x: %d\n", msi_x); 4432 return -1; 4433 } 4434 4435 if ((log_num_mac < 0) || (log_num_mac > 7)) { 4436 pr_warn("mlx4_core: bad num_mac: %d\n", log_num_mac); 4437 return -1; 4438 } 4439 4440 if (log_num_vlan != 0) 4441 pr_warn("mlx4_core: log_num_vlan - obsolete module param, using %d\n", 4442 MLX4_LOG_NUM_VLANS); 4443 4444 if (use_prio != 0) 4445 pr_warn("mlx4_core: use_prio - obsolete module param, ignored\n"); 4446 4447 if ((log_mtts_per_seg < 0) || (log_mtts_per_seg > 7)) { 4448 pr_warn("mlx4_core: bad log_mtts_per_seg: %d\n", 4449 log_mtts_per_seg); 4450 return -1; 4451 } 4452 4453 /* Check if module param for ports type has legal combination */ 4454 if (port_type_array[0] == false && port_type_array[1] == true) { 4455 pr_warn("Module parameter configuration ETH/IB is not supported. Switching to default configuration IB/IB\n"); 4456 port_type_array[0] = true; 4457 } 4458 4459 if (mlx4_log_num_mgm_entry_size < -7 || 4460 (mlx4_log_num_mgm_entry_size > 0 && 4461 (mlx4_log_num_mgm_entry_size < MLX4_MIN_MGM_LOG_ENTRY_SIZE || 4462 mlx4_log_num_mgm_entry_size > MLX4_MAX_MGM_LOG_ENTRY_SIZE))) { 4463 pr_warn("mlx4_core: mlx4_log_num_mgm_entry_size (%d) not in legal range (-7..0 or %d..%d)\n", 4464 mlx4_log_num_mgm_entry_size, 4465 MLX4_MIN_MGM_LOG_ENTRY_SIZE, 4466 MLX4_MAX_MGM_LOG_ENTRY_SIZE); 4467 return -1; 4468 } 4469 4470 return 0; 4471 } 4472 4473 static int __init mlx4_init(void) 4474 { 4475 int ret; 4476 4477 if (mlx4_verify_params()) 4478 return -EINVAL; 4479 4480 4481 mlx4_wq = create_singlethread_workqueue("mlx4"); 4482 if (!mlx4_wq) 4483 return -ENOMEM; 4484 4485 ret = pci_register_driver(&mlx4_driver); 4486 if (ret < 0) 4487 destroy_workqueue(mlx4_wq); 4488 return ret < 0 ? ret : 0; 4489 } 4490 4491 static void __exit mlx4_cleanup(void) 4492 { 4493 pci_unregister_driver(&mlx4_driver); 4494 destroy_workqueue(mlx4_wq); 4495 } 4496 4497 module_init(mlx4_init); 4498 module_exit(mlx4_cleanup); 4499