1/* 2 * Copyright (c) 2009-2013 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#include "opt_inet.h" 36 37#ifdef TCP_OFFLOAD 38#include <asm/pgtable.h> 39#include <linux/page.h> 40#include <rdma/ib_verbs.h> 41#include <rdma/ib_user_verbs.h> 42 43#include "iw_cxgbe.h" 44#include "user.h" 45 46static int fastreg_support = 1; 47module_param(fastreg_support, int, 0644); 48MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default = 1)"); 49 50static int c4iw_modify_port(struct ib_device *ibdev, 51 u8 port, int port_modify_mask, 52 struct ib_port_modify *props) 53{ 54 return -ENOSYS; 55} 56 57static struct ib_ah *c4iw_ah_create(struct ib_pd *pd, 58 struct ib_ah_attr *ah_attr) 59{ 60 return ERR_PTR(-ENOSYS); 61} 62 63static int c4iw_ah_destroy(struct ib_ah *ah) 64{ 65 return -ENOSYS; 66} 67 68static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 69{ 70 return -ENOSYS; 71} 72 73static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid) 74{ 75 return -ENOSYS; 76} 77 78static int c4iw_process_mad(struct ib_device *ibdev, int mad_flags, 79 u8 port_num, struct ib_wc *in_wc, 80 struct ib_grh *in_grh, struct ib_mad *in_mad, 81 struct ib_mad *out_mad) 82{ 83 return -ENOSYS; 84} 85 86static int c4iw_dealloc_ucontext(struct ib_ucontext *context) 87{ 88 struct c4iw_dev *rhp = to_c4iw_dev(context->device); 89 struct c4iw_ucontext *ucontext = to_c4iw_ucontext(context); 90 struct c4iw_mm_entry *mm, *tmp; 91 92 CTR2(KTR_IW_CXGBE, "%s context %p", __func__, context); 93 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry) 94 kfree(mm); 95 c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx); 96 kfree(ucontext); 97 return 0; 98} 99 100static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev, 101 struct ib_udata *udata) 102{ 103 struct c4iw_ucontext *context; 104 struct c4iw_dev *rhp = to_c4iw_dev(ibdev); 105 106 CTR2(KTR_IW_CXGBE, "%s ibdev %p", __func__, ibdev); 107 context = kzalloc(sizeof(*context), GFP_KERNEL); 108 if (!context) 109 return ERR_PTR(-ENOMEM); 110 c4iw_init_dev_ucontext(&rhp->rdev, &context->uctx); 111 INIT_LIST_HEAD(&context->mmaps); 112 spin_lock_init(&context->mmap_lock); 113 return &context->ibucontext; 114} 115 116static inline pgprot_t t4_pgprot_wc(pgprot_t prot) 117{ 118 return pgprot_writecombine(prot); 119} 120 121static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma) 122{ 123 int len = vma->vm_end - vma->vm_start; 124 u32 key = vma->vm_pgoff << PAGE_SHIFT; 125 struct c4iw_rdev *rdev; 126 int ret = 0; 127 struct c4iw_mm_entry *mm; 128 struct c4iw_ucontext *ucontext; 129 u64 addr, paddr; 130 131 u64 va_regs_res = 0, va_udbs_res = 0; 132 u64 len_regs_res = 0, len_udbs_res = 0; 133 134 CTR3(KTR_IW_CXGBE, "%s:1 ctx %p vma %p", __func__, context, vma); 135 136 CTR4(KTR_IW_CXGBE, "%s:1a pgoff 0x%lx key 0x%x len %d", __func__, 137 vma->vm_pgoff, key, len); 138 139 if (vma->vm_start & (PAGE_SIZE-1)) { 140 CTR3(KTR_IW_CXGBE, "%s:2 unaligned vm_start %u vma %p", 141 __func__, vma->vm_start, vma); 142 return -EINVAL; 143 } 144 145 rdev = &(to_c4iw_dev(context->device)->rdev); 146 ucontext = to_c4iw_ucontext(context); 147 148 mm = remove_mmap(ucontext, key, len); 149 if (!mm) { 150 CTR4(KTR_IW_CXGBE, "%s:3 ucontext %p key %u len %u", __func__, 151 ucontext, key, len); 152 return -EINVAL; 153 } 154 addr = mm->addr; 155 kfree(mm); 156 157 va_regs_res = (u64)rman_get_virtual(rdev->adap->regs_res); 158 len_regs_res = (u64)rman_get_size(rdev->adap->regs_res); 159 va_udbs_res = (u64)rman_get_virtual(rdev->adap->udbs_res); 160 len_udbs_res = (u64)rman_get_size(rdev->adap->udbs_res); 161 162 CTR6(KTR_IW_CXGBE, 163 "%s:4 addr %p, masync region %p:%p, udb region %p:%p", __func__, 164 addr, va_regs_res, va_regs_res+len_regs_res, va_udbs_res, 165 va_udbs_res+len_udbs_res); 166 167 if (addr >= va_regs_res && addr < va_regs_res + len_regs_res) { 168 CTR4(KTR_IW_CXGBE, "%s:5 MA_SYNC addr %p region %p, reglen %u", 169 __func__, addr, va_regs_res, len_regs_res); 170 /* 171 * MA_SYNC register... 172 */ 173 paddr = vtophys(addr); 174 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 175 ret = io_remap_pfn_range(vma, vma->vm_start, 176 paddr >> PAGE_SHIFT, 177 len, vma->vm_page_prot); 178 } else { 179 180 if (addr >= va_udbs_res && addr < va_udbs_res + len_udbs_res) { 181 /* 182 * Map user DB or OCQP memory... 183 */ 184 paddr = vtophys(addr); 185 CTR4(KTR_IW_CXGBE, 186 "%s:6 USER DB-GTS addr %p region %p, reglen %u", 187 __func__, addr, va_udbs_res, len_udbs_res); 188#ifdef DOT5 189 if (is_t5(rdev->lldi.adapter_type) && map_udb_as_wc) 190 vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot); 191 else 192#endif 193 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); 194 ret = io_remap_pfn_range(vma, vma->vm_start, 195 paddr >> PAGE_SHIFT, 196 len, vma->vm_page_prot); 197 } else { 198 /* 199 * Map WQ or CQ contig dma memory... 200 */ 201 CTR4(KTR_IW_CXGBE, 202 "%s:7 WQ/CQ addr %p vm_start %u vma %p", __func__, 203 addr, vma->vm_start, vma); 204 ret = io_remap_pfn_range(vma, vma->vm_start, 205 addr >> PAGE_SHIFT, 206 len, vma->vm_page_prot); 207 } 208 } 209 CTR4(KTR_IW_CXGBE, "%s:8 ctx %p vma %p ret %u", __func__, context, vma, 210 ret); 211 return ret; 212} 213 214static int 215c4iw_deallocate_pd(struct ib_pd *pd) 216{ 217 struct c4iw_pd *php = to_c4iw_pd(pd); 218 struct c4iw_dev *rhp = php->rhp; 219 220 CTR3(KTR_IW_CXGBE, "%s: pd %p, pdid 0x%x", __func__, pd, php->pdid); 221 222 c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid); 223 mutex_lock(&rhp->rdev.stats.lock); 224 rhp->rdev.stats.pd.cur--; 225 mutex_unlock(&rhp->rdev.stats.lock); 226 kfree(php); 227 228 return (0); 229} 230 231static struct ib_pd * 232c4iw_allocate_pd(struct ib_device *ibdev, struct ib_ucontext *context, 233 struct ib_udata *udata) 234{ 235 struct c4iw_pd *php; 236 u32 pdid; 237 struct c4iw_dev *rhp; 238 239 CTR4(KTR_IW_CXGBE, "%s: ibdev %p, context %p, data %p", __func__, ibdev, 240 context, udata); 241 rhp = (struct c4iw_dev *) ibdev; 242 pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table); 243 if (!pdid) 244 return ERR_PTR(-EINVAL); 245 php = kzalloc(sizeof(*php), GFP_KERNEL); 246 if (!php) { 247 c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid); 248 return ERR_PTR(-ENOMEM); 249 } 250 php->pdid = pdid; 251 php->rhp = rhp; 252 if (context) { 253 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) { 254 c4iw_deallocate_pd(&php->ibpd); 255 return ERR_PTR(-EFAULT); 256 } 257 } 258 mutex_lock(&rhp->rdev.stats.lock); 259 rhp->rdev.stats.pd.cur++; 260 if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max) 261 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur; 262 mutex_unlock(&rhp->rdev.stats.lock); 263 264 CTR6(KTR_IW_CXGBE, 265 "%s: ibdev %p, context %p, data %p, pddid 0x%x, pd %p", __func__, 266 ibdev, context, udata, pdid, php); 267 return (&php->ibpd); 268} 269 270static int 271c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey) 272{ 273 274 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, pkey %p", __func__, 275 ibdev, port, index, pkey); 276 277 *pkey = 0; 278 return (0); 279} 280 281static int 282c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid) 283{ 284 struct c4iw_dev *dev; 285 struct port_info *pi; 286 struct adapter *sc; 287 288 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, gid %p", __func__, 289 ibdev, port, index, gid); 290 291 memset(&gid->raw[0], 0, sizeof(gid->raw)); 292 dev = to_c4iw_dev(ibdev); 293 sc = dev->rdev.adap; 294 if (port == 0 || port > sc->params.nports) 295 return (-EINVAL); 296 pi = sc->port[port - 1]; 297 memcpy(&gid->raw[0], pi->hw_addr, sizeof(pi->hw_addr)); 298 return (0); 299} 300 301static int 302c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props) 303{ 304 struct c4iw_dev *dev = to_c4iw_dev(ibdev); 305 struct adapter *sc = dev->rdev.adap; 306 307 CTR3(KTR_IW_CXGBE, "%s ibdev %p, props %p", __func__, ibdev, props); 308 309 memset(props, 0, sizeof *props); 310 memcpy(&props->sys_image_guid, sc->port[0]->hw_addr, 6); 311 props->hw_ver = sc->params.chipid; 312 props->fw_ver = sc->params.fw_vers; 313 props->device_cap_flags = dev->device_cap_flags; 314 props->page_size_cap = T4_PAGESIZE_MASK; 315 props->vendor_id = pci_get_vendor(sc->dev); 316 props->vendor_part_id = pci_get_device(sc->dev); 317 props->max_mr_size = T4_MAX_MR_SIZE; 318 props->max_qp = T4_MAX_NUM_QP; 319 props->max_qp_wr = T4_MAX_QP_DEPTH; 320 props->max_sge = T4_MAX_RECV_SGE; 321 props->max_sge_rd = 1; 322 props->max_qp_rd_atom = c4iw_max_read_depth; 323 props->max_qp_init_rd_atom = c4iw_max_read_depth; 324 props->max_cq = T4_MAX_NUM_CQ; 325 props->max_cqe = T4_MAX_CQ_DEPTH; 326 props->max_mr = c4iw_num_stags(&dev->rdev); 327 props->max_pd = T4_MAX_NUM_PD; 328 props->local_ca_ack_delay = 0; 329 props->max_fast_reg_page_list_len = T4_MAX_FR_DEPTH; 330 331 return (0); 332} 333 334/* 335 * Returns -errno on failure. 336 */ 337static int 338c4iw_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props) 339{ 340 struct c4iw_dev *dev; 341 struct adapter *sc; 342 struct port_info *pi; 343 struct ifnet *ifp; 344 345 CTR4(KTR_IW_CXGBE, "%s ibdev %p, port %d, props %p", __func__, ibdev, 346 port, props); 347 348 dev = to_c4iw_dev(ibdev); 349 sc = dev->rdev.adap; 350 if (port > sc->params.nports) 351 return (-EINVAL); 352 pi = sc->port[port - 1]; 353 ifp = pi->ifp; 354 355 memset(props, 0, sizeof(struct ib_port_attr)); 356 props->max_mtu = IB_MTU_4096; 357 if (ifp->if_mtu >= 4096) 358 props->active_mtu = IB_MTU_4096; 359 else if (ifp->if_mtu >= 2048) 360 props->active_mtu = IB_MTU_2048; 361 else if (ifp->if_mtu >= 1024) 362 props->active_mtu = IB_MTU_1024; 363 else if (ifp->if_mtu >= 512) 364 props->active_mtu = IB_MTU_512; 365 else 366 props->active_mtu = IB_MTU_256; 367 props->state = pi->link_cfg.link_ok ? IB_PORT_ACTIVE : IB_PORT_DOWN; 368 props->port_cap_flags = 369 IB_PORT_CM_SUP | 370 IB_PORT_SNMP_TUNNEL_SUP | 371 IB_PORT_REINIT_SUP | 372 IB_PORT_DEVICE_MGMT_SUP | 373 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP; 374 props->gid_tbl_len = 1; 375 props->pkey_tbl_len = 1; 376 props->active_width = 2; 377 props->active_speed = 2; 378 props->max_msg_sz = -1; 379 380 return 0; 381} 382 383/* 384 * Returns -errno on error. 385 */ 386int 387c4iw_register_device(struct c4iw_dev *dev) 388{ 389 struct adapter *sc = dev->rdev.adap; 390 struct ib_device *ibdev = &dev->ibdev; 391 struct iw_cm_verbs *iwcm; 392 int ret; 393 394 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, sc); 395 BUG_ON(!sc->port[0]); 396 strlcpy(ibdev->name, device_get_nameunit(sc->dev), sizeof(ibdev->name)); 397 memset(&ibdev->node_guid, 0, sizeof(ibdev->node_guid)); 398 memcpy(&ibdev->node_guid, sc->port[0]->hw_addr, 6); 399 ibdev->owner = THIS_MODULE; 400 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW; 401 if (fastreg_support) 402 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS; 403 ibdev->local_dma_lkey = 0; 404 ibdev->uverbs_cmd_mask = 405 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) | 406 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) | 407 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) | 408 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) | 409 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) | 410 (1ull << IB_USER_VERBS_CMD_REG_MR) | 411 (1ull << IB_USER_VERBS_CMD_DEREG_MR) | 412 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) | 413 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) | 414 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) | 415 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) | 416 (1ull << IB_USER_VERBS_CMD_CREATE_QP) | 417 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) | 418 (1ull << IB_USER_VERBS_CMD_QUERY_QP) | 419 (1ull << IB_USER_VERBS_CMD_POLL_CQ) | 420 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) | 421 (1ull << IB_USER_VERBS_CMD_POST_SEND) | 422 (1ull << IB_USER_VERBS_CMD_POST_RECV); 423 ibdev->node_type = RDMA_NODE_RNIC; 424 strlcpy(ibdev->node_desc, C4IW_NODE_DESC, sizeof(ibdev->node_desc)); 425 ibdev->phys_port_cnt = sc->params.nports; 426 ibdev->num_comp_vectors = 1; 427 ibdev->dma_device = sc->dev; 428 ibdev->query_device = c4iw_query_device; 429 ibdev->query_port = c4iw_query_port; 430 ibdev->modify_port = c4iw_modify_port; 431 ibdev->query_pkey = c4iw_query_pkey; 432 ibdev->query_gid = c4iw_query_gid; 433 ibdev->alloc_ucontext = c4iw_alloc_ucontext; 434 ibdev->dealloc_ucontext = c4iw_dealloc_ucontext; 435 ibdev->mmap = c4iw_mmap; 436 ibdev->alloc_pd = c4iw_allocate_pd; 437 ibdev->dealloc_pd = c4iw_deallocate_pd; 438 ibdev->create_ah = c4iw_ah_create; 439 ibdev->destroy_ah = c4iw_ah_destroy; 440 ibdev->create_qp = c4iw_create_qp; 441 ibdev->modify_qp = c4iw_ib_modify_qp; 442 ibdev->query_qp = c4iw_ib_query_qp; 443 ibdev->destroy_qp = c4iw_destroy_qp; 444 ibdev->create_cq = c4iw_create_cq; 445 ibdev->destroy_cq = c4iw_destroy_cq; 446 ibdev->resize_cq = c4iw_resize_cq; 447 ibdev->poll_cq = c4iw_poll_cq; 448 ibdev->get_dma_mr = c4iw_get_dma_mr; 449 ibdev->reg_phys_mr = c4iw_register_phys_mem; 450 ibdev->rereg_phys_mr = c4iw_reregister_phys_mem; 451 ibdev->reg_user_mr = c4iw_reg_user_mr; 452 ibdev->dereg_mr = c4iw_dereg_mr; 453 ibdev->alloc_mw = c4iw_alloc_mw; 454 ibdev->bind_mw = c4iw_bind_mw; 455 ibdev->dealloc_mw = c4iw_dealloc_mw; 456 ibdev->alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr; 457 ibdev->alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl; 458 ibdev->free_fast_reg_page_list = c4iw_free_fastreg_pbl; 459 ibdev->attach_mcast = c4iw_multicast_attach; 460 ibdev->detach_mcast = c4iw_multicast_detach; 461 ibdev->process_mad = c4iw_process_mad; 462 ibdev->req_notify_cq = c4iw_arm_cq; 463 ibdev->post_send = c4iw_post_send; 464 ibdev->post_recv = c4iw_post_receive; 465 ibdev->uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION; 466 467 iwcm = kmalloc(sizeof(*iwcm), GFP_KERNEL); 468 if (iwcm == NULL) 469 return (-ENOMEM); 470 471 iwcm->connect = c4iw_connect; 472 iwcm->accept = c4iw_accept_cr; 473 iwcm->reject = c4iw_reject_cr; 474 iwcm->create_listen = c4iw_create_listen; 475 iwcm->destroy_listen = c4iw_destroy_listen; 476 iwcm->add_ref = c4iw_qp_add_ref; 477 iwcm->rem_ref = c4iw_qp_rem_ref; 478 iwcm->get_qp = c4iw_get_qp; 479 ibdev->iwcm = iwcm; 480 481 ret = ib_register_device(&dev->ibdev, NULL); 482 if (ret) 483 kfree(iwcm); 484 485 return (ret); 486} 487 488void 489c4iw_unregister_device(struct c4iw_dev *dev) 490{ 491 492 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, 493 dev->rdev.adap); 494 ib_unregister_device(&dev->ibdev); 495 kfree(dev->ibdev.iwcm); 496 return; 497} 498#endif 499