1 /* 2 * Copyright (c) 2009-2013, 2016 Chelsio, Inc. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #define LINUXKPI_PARAM_PREFIX iw_cxgbe_ 36 37 #include "opt_inet.h" 38 39 #ifdef TCP_OFFLOAD 40 #include <asm/pgtable.h> 41 #include <linux/page.h> 42 #include <rdma/ib_verbs.h> 43 #include <rdma/ib_user_verbs.h> 44 45 #include "iw_cxgbe.h" 46 #include "user.h" 47 48 static int fastreg_support = 1; 49 module_param(fastreg_support, int, 0644); 50 MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default = 1)"); 51 52 static int c4iw_modify_port(struct ib_device *ibdev, 53 u8 port, int port_modify_mask, 54 struct ib_port_modify *props) 55 { 56 return -ENOSYS; 57 } 58 59 static struct ib_ah *c4iw_ah_create(struct ib_pd *pd, 60 struct ib_ah_attr *ah_attr) 61 { 62 return ERR_PTR(-ENOSYS); 63 } 64 65 static int c4iw_ah_destroy(struct ib_ah *ah) 66 { 67 return -ENOSYS; 68 } 69 70 static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 71 { 72 return -ENOSYS; 73 } 74 75 static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 76 { 77 return -ENOSYS; 78 } 79 80 static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags, 81 u8 port_num, struct ib_wc *in_wc, 82 struct ib_grh *in_grh, struct ib_mad *in_mad, 83 struct ib_mad *out_mad) 84 { 85 return -ENOSYS; 86 } 87 88 static int c4iw_dealloc_ucontext(struct ib_ucontext *context) 89 { 90 struct c4iw_dev *rhp = to_c4iw_dev(context->device); 91 struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context); 92 struct c4iw_mm_entry *mm, *tmp; 93 94 CTR2(KTR_IW_CXGBE, "%s context %p", __func__, context); 95 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) 96 kfree(mm); 97 c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx); 98 kfree(ucontext); 99 return 0; 100 } 101 102 static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev, 103 struct ib_udata *udata) 104 { 105 struct c4iw_ucontext *context; 106 struct c4iw_dev *rhp = to_c4iw_dev(ibdev); 107 108 CTR2(KTR_IW_CXGBE, "%s ibdev %p", __func__, ibdev); 109 context = kzalloc(sizeof(*context), GFP_KERNEL); 110 if (!context) 111 return ERR_PTR(-ENOMEM); 112 c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx); 113 INIT_LIST_HEAD(&context->mmaps); 114 spin_lock_init(&context->mmap_lock); 115 return &context->ibucontext; 116 } 117 118 #ifdef DOT5 119 static inline pgprot_t t4_pgprot_wc(pgprot_t prot) 120 { 121 return pgprot_writecombine(prot); 122 } 123 #endif 124 125 static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 126 { 127 int len = vma->vm_end - vma->vm_start; 128 u32 key = vma->vm_pgoff << PAGE_SHIFT; 129 struct c4iw_rdev *rdev; 130 int ret = 0; 131 struct c4iw_mm_entry *mm; 132 struct c4iw_ucontext *ucontext; 133 u64 addr, paddr; 134 135 u64 va_regs_res = 0, va_udbs_res = 0; 136 u64 len_regs_res = 0, len_udbs_res = 0; 137 138 CTR3(KTR_IW_CXGBE, "%s:1 ctx %p vma %p", __func__, context, vma); 139 140 CTR4(KTR_IW_CXGBE, "%s:1a pgoff 0x%lx key 0x%x len %d", __func__, 141 vma->vm_pgoff, key, len); 142 143 if (vma->vm_start & (PAGE_SIZE-1)) { 144 CTR3(KTR_IW_CXGBE, "%s:2 unaligned vm_start %u vma %p", 145 __func__, vma->vm_start, vma); 146 return -EINVAL; 147 } 148 149 rdev = &(to_c4iw_dev(context->device)->rdev); 150 ucontext = to_c4iw_ucontext(context); 151 152 mm = remove_mmap(ucontext, key, len); 153 if (!mm) { 154 CTR4(KTR_IW_CXGBE, "%s:3 ucontext %p key %u len %u", __func__, 155 ucontext, key, len); 156 return -EINVAL; 157 } 158 addr = mm->addr; 159 kfree(mm); 160 161 va_regs_res = (u64)rman_get_virtual(rdev->adap->regs_res); 162 len_regs_res = (u64)rman_get_size(rdev->adap->regs_res); 163 va_udbs_res = (u64)rman_get_virtual(rdev->adap->udbs_res); 164 len_udbs_res = (u64)rman_get_size(rdev->adap->udbs_res); 165 166 CTR6(KTR_IW_CXGBE, 167 "%s:4 addr %p, masync region %p:%p, udb region %p:%p", __func__, 168 addr, va_regs_res, va_regs_res+len_regs_res, va_udbs_res, 169 va_udbs_res+len_udbs_res); 170 171 if (addr >= va_regs_res && addr < va_regs_res + len_regs_res) { 172 CTR4(KTR_IW_CXGBE, "%s:5 MA_SYNC addr %p region %p, reglen %u", 173 __func__, addr, va_regs_res, len_regs_res); 174 /* 175 * MA_SYNC register... 176 */ 177 paddr = vtophys(addr); 178 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 179 ret = io_remap_pfn_range(vma, vma->vm_start, 180 paddr >> PAGE_SHIFT, 181 len, vma->vm_page_prot); 182 } else { 183 184 if (addr >= va_udbs_res && addr < va_udbs_res + len_udbs_res) { 185 /* 186 * Map user DB or OCQP memory... 187 */ 188 paddr = vtophys(addr); 189 CTR4(KTR_IW_CXGBE, 190 "%s:6 USER DB-GTS addr %p region %p, reglen %u", 191 __func__, addr, va_udbs_res, len_udbs_res); 192 #ifdef DOT5 193 if (is_t5(rdev->lldi.adapter_type) && map_udb_as_wc) 194 vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot); 195 else 196 #endif 197 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 198 ret = io_remap_pfn_range(vma, vma->vm_start, 199 paddr >> PAGE_SHIFT, 200 len, vma->vm_page_prot); 201 } else { 202 /* 203 * Map WQ or CQ contig dma memory... 204 */ 205 CTR4(KTR_IW_CXGBE, 206 "%s:7 WQ/CQ addr %p vm_start %u vma %p", __func__, 207 addr, vma->vm_start, vma); 208 ret = io_remap_pfn_range(vma, vma->vm_start, 209 addr >> PAGE_SHIFT, 210 len, vma->vm_page_prot); 211 } 212 } 213 CTR4(KTR_IW_CXGBE, "%s:8 ctx %p vma %p ret %u", __func__, context, vma, 214 ret); 215 return ret; 216 } 217 218 static int 219 c4iw_deallocate_pd(struct ib_pd *pd) 220 { 221 struct c4iw_pd *php = to_c4iw_pd(pd); 222 struct c4iw_dev *rhp = php->rhp; 223 224 CTR3(KTR_IW_CXGBE, "%s: pd %p, pdid 0x%x", __func__, pd, php->pdid); 225 226 c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid); 227 mutex_lock(&rhp->rdev.stats.lock); 228 rhp->rdev.stats.pd.cur--; 229 mutex_unlock(&rhp->rdev.stats.lock); 230 kfree(php); 231 232 return (0); 233 } 234 235 static struct ib_pd * 236 c4iw_allocate_pd(struct ib_device *ibdev, struct ib_ucontext *context, 237 struct ib_udata *udata) 238 { 239 struct c4iw_pd *php; 240 u32 pdid; 241 struct c4iw_dev *rhp; 242 243 CTR4(KTR_IW_CXGBE, "%s: ibdev %p, context %p, data %p", __func__, ibdev, 244 context, udata); 245 rhp = (struct c4iw_dev *) ibdev; 246 pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table); 247 if (!pdid) 248 return ERR_PTR(-EINVAL); 249 php = kzalloc(sizeof(*php), GFP_KERNEL); 250 if (!php) { 251 c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid); 252 return ERR_PTR(-ENOMEM); 253 } 254 php->pdid = pdid; 255 php->rhp = rhp; 256 if (context) { 257 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) { 258 c4iw_deallocate_pd(&php->ibpd); 259 return ERR_PTR(-EFAULT); 260 } 261 } 262 mutex_lock(&rhp->rdev.stats.lock); 263 rhp->rdev.stats.pd.cur++; 264 if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max) 265 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur; 266 mutex_unlock(&rhp->rdev.stats.lock); 267 268 CTR6(KTR_IW_CXGBE, 269 "%s: ibdev %p, context %p, data %p, pddid 0x%x, pd %p", __func__, 270 ibdev, context, udata, pdid, php); 271 return (&php->ibpd); 272 } 273 274 static int 275 c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 276 { 277 278 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, pkey %p", __func__, 279 ibdev, port, index, pkey); 280 281 *pkey = 0; 282 return (0); 283 } 284 285 static int 286 c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) 287 { 288 struct c4iw_dev *dev; 289 struct port_info *pi; 290 struct adapter *sc; 291 292 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, gid %p", __func__, 293 ibdev, port, index, gid); 294 295 memset(&gid->raw[0], 0, sizeof(gid->raw)); 296 dev = to_c4iw_dev(ibdev); 297 sc = dev->rdev.adap; 298 if (port == 0 || port > sc->params.nports) 299 return (-EINVAL); 300 pi = sc->port[port - 1]; 301 memcpy(&gid->raw[0], pi->vi[0].hw_addr, ETHER_ADDR_LEN); 302 return (0); 303 } 304 305 static int 306 c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props) 307 { 308 struct c4iw_dev *dev = to_c4iw_dev(ibdev); 309 struct adapter *sc = dev->rdev.adap; 310 311 CTR3(KTR_IW_CXGBE, "%s ibdev %p, props %p", __func__, ibdev, props); 312 313 memset(props, 0, sizeof *props); 314 memcpy(&props->sys_image_guid, sc->port[0]->vi[0].hw_addr, 315 ETHER_ADDR_LEN); 316 props->hw_ver = sc->params.chipid; 317 props->fw_ver = sc->params.fw_vers; 318 props->device_cap_flags = dev->device_cap_flags; 319 props->page_size_cap = T4_PAGESIZE_MASK; 320 props->vendor_id = pci_get_vendor(sc->dev); 321 props->vendor_part_id = pci_get_device(sc->dev); 322 props->max_mr_size = T4_MAX_MR_SIZE; 323 props->max_qp = T4_MAX_NUM_QP; 324 props->max_qp_wr = T4_MAX_QP_DEPTH; 325 props->max_sge = T4_MAX_RECV_SGE; 326 props->max_sge_rd = 1; 327 props->max_qp_rd_atom = c4iw_max_read_depth; 328 props->max_qp_init_rd_atom = c4iw_max_read_depth; 329 props->max_cq = T4_MAX_NUM_CQ; 330 props->max_cqe = T4_MAX_CQ_DEPTH; 331 props->max_mr = c4iw_num_stags(&dev->rdev); 332 props->max_pd = T4_MAX_NUM_PD; 333 props->local_ca_ack_delay = 0; 334 props->max_fast_reg_page_list_len = T4_MAX_FR_DEPTH; 335 336 return (0); 337 } 338 339 /* 340 * Returns -errno on failure. 341 */ 342 static int 343 c4iw_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) 344 { 345 struct c4iw_dev *dev; 346 struct adapter *sc; 347 struct port_info *pi; 348 struct ifnet *ifp; 349 350 CTR4(KTR_IW_CXGBE, "%s ibdev %p, port %d, props %p", __func__, ibdev, 351 port, props); 352 353 dev = to_c4iw_dev(ibdev); 354 sc = dev->rdev.adap; 355 if (port > sc->params.nports) 356 return (-EINVAL); 357 pi = sc->port[port - 1]; 358 ifp = pi->vi[0].ifp; 359 360 memset(props, 0, sizeof(struct ib_port_attr)); 361 props->max_mtu = IB_MTU_4096; 362 if (ifp->if_mtu >= 4096) 363 props->active_mtu = IB_MTU_4096; 364 else if (ifp->if_mtu >= 2048) 365 props->active_mtu = IB_MTU_2048; 366 else if (ifp->if_mtu >= 1024) 367 props->active_mtu = IB_MTU_1024; 368 else if (ifp->if_mtu >= 512) 369 props->active_mtu = IB_MTU_512; 370 else 371 props->active_mtu = IB_MTU_256; 372 props->state = pi->link_cfg.link_ok ? IB_PORT_ACTIVE : IB_PORT_DOWN; 373 props->port_cap_flags = 374 IB_PORT_CM_SUP | 375 IB_PORT_SNMP_TUNNEL_SUP | 376 IB_PORT_REINIT_SUP | 377 IB_PORT_DEVICE_MGMT_SUP | 378 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; 379 props->gid_tbl_len = 1; 380 props->pkey_tbl_len = 1; 381 props->active_width = 2; 382 props->active_speed = 2; 383 props->max_msg_sz = -1; 384 385 return 0; 386 } 387 388 /* 389 * Returns -errno on error. 390 */ 391 int 392 c4iw_register_device(struct c4iw_dev *dev) 393 { 394 struct adapter *sc = dev->rdev.adap; 395 struct ib_device *ibdev = &dev->ibdev; 396 struct iw_cm_verbs *iwcm; 397 int ret; 398 399 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, sc); 400 BUG_ON(!sc->port[0]); 401 strlcpy(ibdev->name, device_get_nameunit(sc->dev), sizeof(ibdev->name)); 402 memset(&ibdev->node_guid, 0, sizeof(ibdev->node_guid)); 403 memcpy(&ibdev->node_guid, sc->port[0]->vi[0].hw_addr, ETHER_ADDR_LEN); 404 ibdev->owner = THIS_MODULE; 405 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; 406 if (fastreg_support) 407 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 408 ibdev->local_dma_lkey = 0; 409 ibdev->uverbs_cmd_mask = 410 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 411 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 412 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 413 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 414 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 415 (1ull << IB_USER_VERBS_CMD_REG_MR) | 416 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 417 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 418 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 419 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 420 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | 421 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 422 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 423 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 424 (1ull << IB_USER_VERBS_CMD_POLL_CQ) | 425 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 426 (1ull << IB_USER_VERBS_CMD_POST_SEND) | 427 (1ull << IB_USER_VERBS_CMD_POST_RECV); 428 ibdev->node_type = RDMA_NODE_RNIC; 429 strlcpy(ibdev->node_desc, C4IW_NODE_DESC, sizeof(ibdev->node_desc)); 430 ibdev->phys_port_cnt = sc->params.nports; 431 ibdev->num_comp_vectors = 1; 432 ibdev->dma_device = sc->dev; 433 ibdev->query_device = c4iw_query_device; 434 ibdev->query_port = c4iw_query_port; 435 ibdev->modify_port = c4iw_modify_port; 436 ibdev->query_pkey = c4iw_query_pkey; 437 ibdev->query_gid = c4iw_query_gid; 438 ibdev->alloc_ucontext = c4iw_alloc_ucontext; 439 ibdev->dealloc_ucontext = c4iw_dealloc_ucontext; 440 ibdev->mmap = c4iw_mmap; 441 ibdev->alloc_pd = c4iw_allocate_pd; 442 ibdev->dealloc_pd = c4iw_deallocate_pd; 443 ibdev->create_ah = c4iw_ah_create; 444 ibdev->destroy_ah = c4iw_ah_destroy; 445 ibdev->create_qp = c4iw_create_qp; 446 ibdev->modify_qp = c4iw_ib_modify_qp; 447 ibdev->query_qp = c4iw_ib_query_qp; 448 ibdev->destroy_qp = c4iw_destroy_qp; 449 ibdev->create_cq = c4iw_create_cq; 450 ibdev->destroy_cq = c4iw_destroy_cq; 451 ibdev->resize_cq = c4iw_resize_cq; 452 ibdev->poll_cq = c4iw_poll_cq; 453 ibdev->get_dma_mr = c4iw_get_dma_mr; 454 ibdev->reg_phys_mr = c4iw_register_phys_mem; 455 ibdev->rereg_phys_mr = c4iw_reregister_phys_mem; 456 ibdev->reg_user_mr = c4iw_reg_user_mr; 457 ibdev->dereg_mr = c4iw_dereg_mr; 458 ibdev->alloc_mw = c4iw_alloc_mw; 459 ibdev->bind_mw = c4iw_bind_mw; 460 ibdev->dealloc_mw = c4iw_dealloc_mw; 461 ibdev->alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr; 462 ibdev->alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl; 463 ibdev->free_fast_reg_page_list = c4iw_free_fastreg_pbl; 464 ibdev->attach_mcast = c4iw_multicast_attach; 465 ibdev->detach_mcast = c4iw_multicast_detach; 466 ibdev->process_mad = c4iw_process_mad; 467 ibdev->req_notify_cq = c4iw_arm_cq; 468 ibdev->post_send = c4iw_post_send; 469 ibdev->post_recv = c4iw_post_receive; 470 ibdev->uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION; 471 472 iwcm = kmalloc(sizeof(*iwcm), GFP_KERNEL); 473 if (iwcm == NULL) 474 return (-ENOMEM); 475 476 iwcm->connect = c4iw_connect; 477 iwcm->accept = c4iw_accept_cr; 478 iwcm->reject = c4iw_reject_cr; 479 iwcm->create_listen_ep = c4iw_create_listen_ep; 480 iwcm->destroy_listen_ep = c4iw_destroy_listen_ep; 481 iwcm->newconn = process_newconn; 482 iwcm->add_ref = c4iw_qp_add_ref; 483 iwcm->rem_ref = c4iw_qp_rem_ref; 484 iwcm->get_qp = c4iw_get_qp; 485 ibdev->iwcm = iwcm; 486 487 ret = ib_register_device(&dev->ibdev, NULL); 488 if (ret) 489 kfree(iwcm); 490 491 return (ret); 492 } 493 494 void 495 c4iw_unregister_device(struct c4iw_dev *dev) 496 { 497 498 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, 499 dev->rdev.adap); 500 ib_unregister_device(&dev->ibdev); 501 kfree(dev->ibdev.iwcm); 502 return; 503 } 504 #endif 505