2 * Copyright (c) 2009-2013 Chelsio, Inc. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
38 #include <asm/pgtable.h>
39 #include <linux/page.h>
40 #include <rdma/ib_verbs.h>
41 #include <rdma/ib_user_verbs.h>
46 static int fastreg_support = 1;
47 module_param(fastreg_support, int, 0644);
48 MODULE_PARM_DESC(fastreg_support, "Advertise fastreg support (default = 1)");
50 static int c4iw_modify_port(struct ib_device *ibdev,
51 u8 port, int port_modify_mask,
52 struct ib_port_modify *props)
57 static struct ib_ah *c4iw_ah_create(struct ib_pd *pd,
58 struct ib_ah_attr *ah_attr)
60 return ERR_PTR(-ENOSYS);
63 static int c4iw_ah_destroy(struct ib_ah *ah)
68 static int c4iw_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
73 static int c4iw_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
78 static 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)
86 static int c4iw_dealloc_ucontext(struct ib_ucontext *context)
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;
92 CTR2(KTR_IW_CXGBE, "%s context %p", __func__, context);
93 list_for_each_entry_safe(mm, tmp, &ucontext->mmaps, entry)
95 c4iw_release_dev_ucontext(&rhp->rdev, &ucontext->uctx);
100 static struct ib_ucontext *c4iw_alloc_ucontext(struct ib_device *ibdev,
101 struct ib_udata *udata)
103 struct c4iw_ucontext *context;
104 struct c4iw_dev *rhp = to_c4iw_dev(ibdev);
106 CTR2(KTR_IW_CXGBE, "%s ibdev %p", __func__, ibdev);
107 context = kzalloc(sizeof(*context), GFP_KERNEL);
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;
117 static inline pgprot_t t4_pgprot_wc(pgprot_t prot)
119 return pgprot_writecombine(prot);
123 static int c4iw_mmap(struct ib_ucontext *context, struct vm_area_struct *vma)
125 int len = vma->vm_end - vma->vm_start;
126 u32 key = vma->vm_pgoff << PAGE_SHIFT;
127 struct c4iw_rdev *rdev;
129 struct c4iw_mm_entry *mm;
130 struct c4iw_ucontext *ucontext;
133 u64 va_regs_res = 0, va_udbs_res = 0;
134 u64 len_regs_res = 0, len_udbs_res = 0;
136 CTR3(KTR_IW_CXGBE, "%s:1 ctx %p vma %p", __func__, context, vma);
138 CTR4(KTR_IW_CXGBE, "%s:1a pgoff 0x%lx key 0x%x len %d", __func__,
139 vma->vm_pgoff, key, len);
141 if (vma->vm_start & (PAGE_SIZE-1)) {
142 CTR3(KTR_IW_CXGBE, "%s:2 unaligned vm_start %u vma %p",
143 __func__, vma->vm_start, vma);
147 rdev = &(to_c4iw_dev(context->device)->rdev);
148 ucontext = to_c4iw_ucontext(context);
150 mm = remove_mmap(ucontext, key, len);
152 CTR4(KTR_IW_CXGBE, "%s:3 ucontext %p key %u len %u", __func__,
159 va_regs_res = (u64)rman_get_virtual(rdev->adap->regs_res);
160 len_regs_res = (u64)rman_get_size(rdev->adap->regs_res);
161 va_udbs_res = (u64)rman_get_virtual(rdev->adap->udbs_res);
162 len_udbs_res = (u64)rman_get_size(rdev->adap->udbs_res);
165 "%s:4 addr %p, masync region %p:%p, udb region %p:%p", __func__,
166 addr, va_regs_res, va_regs_res+len_regs_res, va_udbs_res,
167 va_udbs_res+len_udbs_res);
169 if (addr >= va_regs_res && addr < va_regs_res + len_regs_res) {
170 CTR4(KTR_IW_CXGBE, "%s:5 MA_SYNC addr %p region %p, reglen %u",
171 __func__, addr, va_regs_res, len_regs_res);
173 * MA_SYNC register...
175 paddr = vtophys(addr);
176 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
177 ret = io_remap_pfn_range(vma, vma->vm_start,
179 len, vma->vm_page_prot);
182 if (addr >= va_udbs_res && addr < va_udbs_res + len_udbs_res) {
184 * Map user DB or OCQP memory...
186 paddr = vtophys(addr);
188 "%s:6 USER DB-GTS addr %p region %p, reglen %u",
189 __func__, addr, va_udbs_res, len_udbs_res);
191 if (is_t5(rdev->lldi.adapter_type) && map_udb_as_wc)
192 vma->vm_page_prot = t4_pgprot_wc(vma->vm_page_prot);
195 vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
196 ret = io_remap_pfn_range(vma, vma->vm_start,
198 len, vma->vm_page_prot);
201 * Map WQ or CQ contig dma memory...
204 "%s:7 WQ/CQ addr %p vm_start %u vma %p", __func__,
205 addr, vma->vm_start, vma);
206 ret = io_remap_pfn_range(vma, vma->vm_start,
208 len, vma->vm_page_prot);
211 CTR4(KTR_IW_CXGBE, "%s:8 ctx %p vma %p ret %u", __func__, context, vma,
217 c4iw_deallocate_pd(struct ib_pd *pd)
219 struct c4iw_pd *php = to_c4iw_pd(pd);
220 struct c4iw_dev *rhp = php->rhp;
222 CTR3(KTR_IW_CXGBE, "%s: pd %p, pdid 0x%x", __func__, pd, php->pdid);
224 c4iw_put_resource(&rhp->rdev.resource.pdid_table, php->pdid);
225 mutex_lock(&rhp->rdev.stats.lock);
226 rhp->rdev.stats.pd.cur--;
227 mutex_unlock(&rhp->rdev.stats.lock);
233 static struct ib_pd *
234 c4iw_allocate_pd(struct ib_device *ibdev, struct ib_ucontext *context,
235 struct ib_udata *udata)
239 struct c4iw_dev *rhp;
241 CTR4(KTR_IW_CXGBE, "%s: ibdev %p, context %p, data %p", __func__, ibdev,
243 rhp = (struct c4iw_dev *) ibdev;
244 pdid = c4iw_get_resource(&rhp->rdev.resource.pdid_table);
246 return ERR_PTR(-EINVAL);
247 php = kzalloc(sizeof(*php), GFP_KERNEL);
249 c4iw_put_resource(&rhp->rdev.resource.pdid_table, pdid);
250 return ERR_PTR(-ENOMEM);
255 if (ib_copy_to_udata(udata, &php->pdid, sizeof(u32))) {
256 c4iw_deallocate_pd(&php->ibpd);
257 return ERR_PTR(-EFAULT);
260 mutex_lock(&rhp->rdev.stats.lock);
261 rhp->rdev.stats.pd.cur++;
262 if (rhp->rdev.stats.pd.cur > rhp->rdev.stats.pd.max)
263 rhp->rdev.stats.pd.max = rhp->rdev.stats.pd.cur;
264 mutex_unlock(&rhp->rdev.stats.lock);
267 "%s: ibdev %p, context %p, data %p, pddid 0x%x, pd %p", __func__,
268 ibdev, context, udata, pdid, php);
273 c4iw_query_pkey(struct ib_device *ibdev, u8 port, u16 index, u16 *pkey)
276 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, pkey %p", __func__,
277 ibdev, port, index, pkey);
284 c4iw_query_gid(struct ib_device *ibdev, u8 port, int index, union ib_gid *gid)
286 struct c4iw_dev *dev;
287 struct port_info *pi;
290 CTR5(KTR_IW_CXGBE, "%s ibdev %p, port %d, index %d, gid %p", __func__,
291 ibdev, port, index, gid);
293 memset(&gid->raw[0], 0, sizeof(gid->raw));
294 dev = to_c4iw_dev(ibdev);
296 if (port == 0 || port > sc->params.nports)
298 pi = sc->port[port - 1];
299 memcpy(&gid->raw[0], pi->hw_addr, sizeof(pi->hw_addr));
304 c4iw_query_device(struct ib_device *ibdev, struct ib_device_attr *props)
306 struct c4iw_dev *dev = to_c4iw_dev(ibdev);
307 struct adapter *sc = dev->rdev.adap;
309 CTR3(KTR_IW_CXGBE, "%s ibdev %p, props %p", __func__, ibdev, props);
311 memset(props, 0, sizeof *props);
312 memcpy(&props->sys_image_guid, sc->port[0]->hw_addr, 6);
313 props->hw_ver = sc->params.chipid;
314 props->fw_ver = sc->params.fw_vers;
315 props->device_cap_flags = dev->device_cap_flags;
316 props->page_size_cap = T4_PAGESIZE_MASK;
317 props->vendor_id = pci_get_vendor(sc->dev);
318 props->vendor_part_id = pci_get_device(sc->dev);
319 props->max_mr_size = T4_MAX_MR_SIZE;
320 props->max_qp = T4_MAX_NUM_QP;
321 props->max_qp_wr = T4_MAX_QP_DEPTH;
322 props->max_sge = T4_MAX_RECV_SGE;
323 props->max_sge_rd = 1;
324 props->max_qp_rd_atom = c4iw_max_read_depth;
325 props->max_qp_init_rd_atom = c4iw_max_read_depth;
326 props->max_cq = T4_MAX_NUM_CQ;
327 props->max_cqe = T4_MAX_CQ_DEPTH;
328 props->max_mr = c4iw_num_stags(&dev->rdev);
329 props->max_pd = T4_MAX_NUM_PD;
330 props->local_ca_ack_delay = 0;
331 props->max_fast_reg_page_list_len = T4_MAX_FR_DEPTH;
337 * Returns -errno on failure.
340 c4iw_query_port(struct ib_device *ibdev, u8 port, struct ib_port_attr *props)
342 struct c4iw_dev *dev;
344 struct port_info *pi;
347 CTR4(KTR_IW_CXGBE, "%s ibdev %p, port %d, props %p", __func__, ibdev,
350 dev = to_c4iw_dev(ibdev);
352 if (port > sc->params.nports)
354 pi = sc->port[port - 1];
357 memset(props, 0, sizeof(struct ib_port_attr));
358 props->max_mtu = IB_MTU_4096;
359 if (ifp->if_mtu >= 4096)
360 props->active_mtu = IB_MTU_4096;
361 else if (ifp->if_mtu >= 2048)
362 props->active_mtu = IB_MTU_2048;
363 else if (ifp->if_mtu >= 1024)
364 props->active_mtu = IB_MTU_1024;
365 else if (ifp->if_mtu >= 512)
366 props->active_mtu = IB_MTU_512;
368 props->active_mtu = IB_MTU_256;
369 props->state = pi->link_cfg.link_ok ? IB_PORT_ACTIVE : IB_PORT_DOWN;
370 props->port_cap_flags =
372 IB_PORT_SNMP_TUNNEL_SUP |
374 IB_PORT_DEVICE_MGMT_SUP |
375 IB_PORT_VENDOR_CLASS_SUP | IB_PORT_BOOT_MGMT_SUP;
376 props->gid_tbl_len = 1;
377 props->pkey_tbl_len = 1;
378 props->active_width = 2;
379 props->active_speed = 2;
380 props->max_msg_sz = -1;
386 * Returns -errno on error.
389 c4iw_register_device(struct c4iw_dev *dev)
391 struct adapter *sc = dev->rdev.adap;
392 struct ib_device *ibdev = &dev->ibdev;
393 struct iw_cm_verbs *iwcm;
396 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev, sc);
397 BUG_ON(!sc->port[0]);
398 strlcpy(ibdev->name, device_get_nameunit(sc->dev), sizeof(ibdev->name));
399 memset(&ibdev->node_guid, 0, sizeof(ibdev->node_guid));
400 memcpy(&ibdev->node_guid, sc->port[0]->hw_addr, 6);
401 ibdev->owner = THIS_MODULE;
402 dev->device_cap_flags = IB_DEVICE_LOCAL_DMA_LKEY | IB_DEVICE_MEM_WINDOW;
404 dev->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
405 ibdev->local_dma_lkey = 0;
406 ibdev->uverbs_cmd_mask =
407 (1ull << IB_USER_VERBS_CMD_GET_CONTEXT) |
408 (1ull << IB_USER_VERBS_CMD_QUERY_DEVICE) |
409 (1ull << IB_USER_VERBS_CMD_QUERY_PORT) |
410 (1ull << IB_USER_VERBS_CMD_ALLOC_PD) |
411 (1ull << IB_USER_VERBS_CMD_DEALLOC_PD) |
412 (1ull << IB_USER_VERBS_CMD_REG_MR) |
413 (1ull << IB_USER_VERBS_CMD_DEREG_MR) |
414 (1ull << IB_USER_VERBS_CMD_CREATE_COMP_CHANNEL) |
415 (1ull << IB_USER_VERBS_CMD_CREATE_CQ) |
416 (1ull << IB_USER_VERBS_CMD_DESTROY_CQ) |
417 (1ull << IB_USER_VERBS_CMD_REQ_NOTIFY_CQ) |
418 (1ull << IB_USER_VERBS_CMD_CREATE_QP) |
419 (1ull << IB_USER_VERBS_CMD_MODIFY_QP) |
420 (1ull << IB_USER_VERBS_CMD_QUERY_QP) |
421 (1ull << IB_USER_VERBS_CMD_POLL_CQ) |
422 (1ull << IB_USER_VERBS_CMD_DESTROY_QP) |
423 (1ull << IB_USER_VERBS_CMD_POST_SEND) |
424 (1ull << IB_USER_VERBS_CMD_POST_RECV);
425 ibdev->node_type = RDMA_NODE_RNIC;
426 strlcpy(ibdev->node_desc, C4IW_NODE_DESC, sizeof(ibdev->node_desc));
427 ibdev->phys_port_cnt = sc->params.nports;
428 ibdev->num_comp_vectors = 1;
429 ibdev->dma_device = sc->dev;
430 ibdev->query_device = c4iw_query_device;
431 ibdev->query_port = c4iw_query_port;
432 ibdev->modify_port = c4iw_modify_port;
433 ibdev->query_pkey = c4iw_query_pkey;
434 ibdev->query_gid = c4iw_query_gid;
435 ibdev->alloc_ucontext = c4iw_alloc_ucontext;
436 ibdev->dealloc_ucontext = c4iw_dealloc_ucontext;
437 ibdev->mmap = c4iw_mmap;
438 ibdev->alloc_pd = c4iw_allocate_pd;
439 ibdev->dealloc_pd = c4iw_deallocate_pd;
440 ibdev->create_ah = c4iw_ah_create;
441 ibdev->destroy_ah = c4iw_ah_destroy;
442 ibdev->create_qp = c4iw_create_qp;
443 ibdev->modify_qp = c4iw_ib_modify_qp;
444 ibdev->query_qp = c4iw_ib_query_qp;
445 ibdev->destroy_qp = c4iw_destroy_qp;
446 ibdev->create_cq = c4iw_create_cq;
447 ibdev->destroy_cq = c4iw_destroy_cq;
448 ibdev->resize_cq = c4iw_resize_cq;
449 ibdev->poll_cq = c4iw_poll_cq;
450 ibdev->get_dma_mr = c4iw_get_dma_mr;
451 ibdev->reg_phys_mr = c4iw_register_phys_mem;
452 ibdev->rereg_phys_mr = c4iw_reregister_phys_mem;
453 ibdev->reg_user_mr = c4iw_reg_user_mr;
454 ibdev->dereg_mr = c4iw_dereg_mr;
455 ibdev->alloc_mw = c4iw_alloc_mw;
456 ibdev->bind_mw = c4iw_bind_mw;
457 ibdev->dealloc_mw = c4iw_dealloc_mw;
458 ibdev->alloc_fast_reg_mr = c4iw_alloc_fast_reg_mr;
459 ibdev->alloc_fast_reg_page_list = c4iw_alloc_fastreg_pbl;
460 ibdev->free_fast_reg_page_list = c4iw_free_fastreg_pbl;
461 ibdev->attach_mcast = c4iw_multicast_attach;
462 ibdev->detach_mcast = c4iw_multicast_detach;
463 ibdev->process_mad = c4iw_process_mad;
464 ibdev->req_notify_cq = c4iw_arm_cq;
465 ibdev->post_send = c4iw_post_send;
466 ibdev->post_recv = c4iw_post_receive;
467 ibdev->uverbs_abi_ver = C4IW_UVERBS_ABI_VERSION;
469 iwcm = kmalloc(sizeof(*iwcm), GFP_KERNEL);
473 iwcm->connect = c4iw_connect;
474 iwcm->accept = c4iw_accept_cr;
475 iwcm->reject = c4iw_reject_cr;
476 iwcm->create_listen = c4iw_create_listen;
477 iwcm->destroy_listen = c4iw_destroy_listen;
478 iwcm->add_ref = c4iw_qp_add_ref;
479 iwcm->rem_ref = c4iw_qp_rem_ref;
480 iwcm->get_qp = c4iw_get_qp;
483 ret = ib_register_device(&dev->ibdev, NULL);
491 c4iw_unregister_device(struct c4iw_dev *dev)
494 CTR3(KTR_IW_CXGBE, "%s c4iw_dev %p, adapter %p", __func__, dev,
496 ib_unregister_device(&dev->ibdev);
497 kfree(dev->ibdev.iwcm);