1256694Snp/* 2256694Snp * Copyright (c) 2009-2013 Chelsio, Inc. All rights reserved. 3256694Snp * 4256694Snp * This software is available to you under a choice of one of two 5256694Snp * licenses. You may choose to be licensed under the terms of the GNU 6256694Snp * General Public License (GPL) Version 2, available from the file 7256694Snp * COPYING in the main directory of this source tree, or the 8256694Snp * OpenIB.org BSD license below: 9256694Snp * 10256694Snp * Redistribution and use in source and binary forms, with or 11256694Snp * without modification, are permitted provided that the following 12256694Snp * conditions are met: 13256694Snp * 14256694Snp * - Redistributions of source code must retain the above 15256694Snp * copyright notice, this list of conditions and the following 16256694Snp * disclaimer. 17256694Snp * 18256694Snp * - Redistributions in binary form must reproduce the above 19256694Snp * copyright notice, this list of conditions and the following 20256694Snp * disclaimer in the documentation and/or other materials 21256694Snp * provided with the distribution. 22256694Snp * 23256694Snp * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24256694Snp * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25256694Snp * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26256694Snp * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27256694Snp * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28256694Snp * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29256694Snp * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30256694Snp * SOFTWARE. 31256694Snp */ 32256694Snp#include <sys/cdefs.h> 33256694Snp__FBSDID("$FreeBSD: releng/10.3/sys/dev/cxgbe/iw_cxgbe/device.c 284089 2015-06-06 18:00:36Z np $"); 34256694Snp 35256694Snp#include "opt_inet.h" 36256694Snp 37256694Snp#include <sys/ktr.h> 38256694Snp 39256694Snp#include <linux/module.h> 40256694Snp#include <linux/moduleparam.h> 41256694Snp 42256694Snp#include <rdma/ib_verbs.h> 43256694Snp#include <linux/idr.h> 44256694Snp 45256694Snp#ifdef TCP_OFFLOAD 46256694Snp#include "iw_cxgbe.h" 47256694Snp 48256694Snpint spg_creds = 2; /* Default status page size is 2 credits = 128B */ 49256694Snp 50256694Snpvoid 51256694Snpc4iw_release_dev_ucontext(struct c4iw_rdev *rdev, 52256694Snp struct c4iw_dev_ucontext *uctx) 53256694Snp{ 54256694Snp struct list_head *pos, *nxt; 55256694Snp struct c4iw_qid_list *entry; 56256694Snp 57256694Snp mutex_lock(&uctx->lock); 58256694Snp list_for_each_safe(pos, nxt, &uctx->qpids) { 59256694Snp entry = list_entry(pos, struct c4iw_qid_list, entry); 60256694Snp list_del_init(&entry->entry); 61256694Snp if (!(entry->qid & rdev->qpmask)) { 62256694Snp c4iw_put_resource(&rdev->resource.qid_table, 63256694Snp entry->qid); 64256694Snp mutex_lock(&rdev->stats.lock); 65256694Snp rdev->stats.qid.cur -= rdev->qpmask + 1; 66256694Snp mutex_unlock(&rdev->stats.lock); 67256694Snp } 68256694Snp kfree(entry); 69256694Snp } 70256694Snp 71256694Snp list_for_each_safe(pos, nxt, &uctx->qpids) { 72256694Snp entry = list_entry(pos, struct c4iw_qid_list, entry); 73256694Snp list_del_init(&entry->entry); 74256694Snp kfree(entry); 75256694Snp } 76256694Snp mutex_unlock(&uctx->lock); 77256694Snp} 78256694Snp 79256694Snpvoid 80256694Snpc4iw_init_dev_ucontext(struct c4iw_rdev *rdev, struct c4iw_dev_ucontext *uctx) 81256694Snp{ 82256694Snp 83256694Snp INIT_LIST_HEAD(&uctx->qpids); 84256694Snp INIT_LIST_HEAD(&uctx->cqids); 85256694Snp mutex_init(&uctx->lock); 86256694Snp} 87256694Snp 88256694Snpstatic int 89256694Snpc4iw_rdev_open(struct c4iw_rdev *rdev) 90256694Snp{ 91256694Snp struct adapter *sc = rdev->adap; 92256694Snp int rc; 93256694Snp 94256694Snp c4iw_init_dev_ucontext(rdev, &rdev->uctx); 95256694Snp 96256694Snp /* Save the status page size set by if_cxgbe */ 97256694Snp spg_creds = (t4_read_reg(sc, A_SGE_CONTROL) & F_EGRSTATUSPAGESIZE) ? 98256694Snp 2 : 1; 99256694Snp 100256694Snp /* XXX: we can probably make this work */ 101256694Snp if (sc->sge.eq_s_qpp > PAGE_SHIFT || sc->sge.iq_s_qpp > PAGE_SHIFT) { 102256694Snp device_printf(sc->dev, 103256694Snp "doorbell density too high (eq %d, iq %d, pg %d).\n", 104256694Snp sc->sge.eq_s_qpp, sc->sge.eq_s_qpp, PAGE_SHIFT); 105256694Snp rc = -EINVAL; 106256694Snp goto err1; 107256694Snp } 108256694Snp 109256694Snp rdev->qpshift = PAGE_SHIFT - sc->sge.eq_s_qpp; 110256694Snp rdev->qpmask = (1 << sc->sge.eq_s_qpp) - 1; 111256694Snp rdev->cqshift = PAGE_SHIFT - sc->sge.iq_s_qpp; 112256694Snp rdev->cqmask = (1 << sc->sge.iq_s_qpp) - 1; 113256694Snp 114256694Snp if (c4iw_num_stags(rdev) == 0) { 115256694Snp rc = -EINVAL; 116256694Snp goto err1; 117256694Snp } 118256694Snp 119256694Snp rdev->stats.pd.total = T4_MAX_NUM_PD; 120256694Snp rdev->stats.stag.total = sc->vres.stag.size; 121256694Snp rdev->stats.pbl.total = sc->vres.pbl.size; 122256694Snp rdev->stats.rqt.total = sc->vres.rq.size; 123256694Snp rdev->stats.qid.total = sc->vres.qp.size; 124256694Snp 125256694Snp rc = c4iw_init_resource(rdev, c4iw_num_stags(rdev), T4_MAX_NUM_PD); 126256694Snp if (rc) { 127256694Snp device_printf(sc->dev, "error %d initializing resources\n", rc); 128256694Snp goto err1; 129256694Snp } 130256694Snp rc = c4iw_pblpool_create(rdev); 131256694Snp if (rc) { 132256694Snp device_printf(sc->dev, "error %d initializing pbl pool\n", rc); 133256694Snp goto err2; 134256694Snp } 135256694Snp rc = c4iw_rqtpool_create(rdev); 136256694Snp if (rc) { 137256694Snp device_printf(sc->dev, "error %d initializing rqt pool\n", rc); 138256694Snp goto err3; 139256694Snp } 140256694Snp 141256694Snp return (0); 142256694Snperr3: 143256694Snp c4iw_pblpool_destroy(rdev); 144256694Snperr2: 145256694Snp c4iw_destroy_resource(&rdev->resource); 146256694Snperr1: 147256694Snp return (rc); 148256694Snp} 149256694Snp 150256694Snpstatic void c4iw_rdev_close(struct c4iw_rdev *rdev) 151256694Snp{ 152256694Snp c4iw_pblpool_destroy(rdev); 153256694Snp c4iw_rqtpool_destroy(rdev); 154256694Snp c4iw_destroy_resource(&rdev->resource); 155256694Snp} 156256694Snp 157256694Snpstatic void 158256694Snpc4iw_dealloc(struct c4iw_dev *iwsc) 159256694Snp{ 160256694Snp 161256694Snp c4iw_rdev_close(&iwsc->rdev); 162256694Snp idr_destroy(&iwsc->cqidr); 163256694Snp idr_destroy(&iwsc->qpidr); 164256694Snp idr_destroy(&iwsc->mmidr); 165256694Snp ib_dealloc_device(&iwsc->ibdev); 166256694Snp} 167256694Snp 168256694Snpstatic struct c4iw_dev * 169256694Snpc4iw_alloc(struct adapter *sc) 170256694Snp{ 171256694Snp struct c4iw_dev *iwsc; 172256694Snp int rc; 173256694Snp 174256694Snp iwsc = (struct c4iw_dev *)ib_alloc_device(sizeof(*iwsc)); 175256694Snp if (iwsc == NULL) { 176256694Snp device_printf(sc->dev, "Cannot allocate ib device.\n"); 177256694Snp return (ERR_PTR(-ENOMEM)); 178256694Snp } 179256694Snp iwsc->rdev.adap = sc; 180256694Snp 181256694Snp rc = c4iw_rdev_open(&iwsc->rdev); 182256694Snp if (rc != 0) { 183256694Snp device_printf(sc->dev, "Unable to open CXIO rdev (%d)\n", rc); 184256694Snp ib_dealloc_device(&iwsc->ibdev); 185256694Snp return (ERR_PTR(rc)); 186256694Snp } 187256694Snp 188256694Snp idr_init(&iwsc->cqidr); 189256694Snp idr_init(&iwsc->qpidr); 190256694Snp idr_init(&iwsc->mmidr); 191256694Snp spin_lock_init(&iwsc->lock); 192256694Snp mutex_init(&iwsc->rdev.stats.lock); 193256694Snp 194256694Snp return (iwsc); 195256694Snp} 196256694Snp 197256694Snpstatic int c4iw_mod_load(void); 198256694Snpstatic int c4iw_mod_unload(void); 199256694Snpstatic int c4iw_activate(struct adapter *); 200256694Snpstatic int c4iw_deactivate(struct adapter *); 201256694Snp 202256694Snpstatic struct uld_info c4iw_uld_info = { 203256694Snp .uld_id = ULD_IWARP, 204256694Snp .activate = c4iw_activate, 205256694Snp .deactivate = c4iw_deactivate, 206256694Snp}; 207256694Snp 208256694Snpstatic int 209256694Snpc4iw_activate(struct adapter *sc) 210256694Snp{ 211256694Snp struct c4iw_dev *iwsc; 212256694Snp int rc; 213256694Snp 214256694Snp ASSERT_SYNCHRONIZED_OP(sc); 215256694Snp 216284089Snp if (uld_active(sc, ULD_IWARP)) { 217256694Snp KASSERT(0, ("%s: RDMA already eanbled on sc %p", __func__, sc)); 218256694Snp return (0); 219256694Snp } 220256694Snp 221256694Snp if (sc->rdmacaps == 0) { 222256694Snp device_printf(sc->dev, 223256694Snp "RDMA not supported or RDMA cap is not enabled.\n"); 224256694Snp return (ENOSYS); 225256694Snp } 226256694Snp 227256694Snp iwsc = c4iw_alloc(sc); 228256694Snp if (IS_ERR(iwsc)) { 229256694Snp rc = -PTR_ERR(iwsc); 230256694Snp device_printf(sc->dev, "initialization failed: %d\n", rc); 231256694Snp return (rc); 232256694Snp } 233256694Snp 234256694Snp sc->iwarp_softc = iwsc; 235256694Snp c4iw_cm_init_cpl(sc); 236256694Snp 237256694Snp rc = -c4iw_register_device(iwsc); 238256694Snp if (rc) { 239256694Snp device_printf(sc->dev, "RDMA registration failed: %d\n", rc); 240256694Snp c4iw_dealloc(iwsc); 241256694Snp sc->iwarp_softc = NULL; 242256694Snp } 243256694Snp 244256694Snp return (rc); 245256694Snp} 246256694Snp 247256694Snpstatic int 248256694Snpc4iw_deactivate(struct adapter *sc) 249256694Snp{ 250256694Snp struct c4iw_dev *iwsc = sc->iwarp_softc; 251256694Snp 252256694Snp ASSERT_SYNCHRONIZED_OP(sc); 253256694Snp 254256694Snp c4iw_unregister_device(iwsc); 255256694Snp c4iw_dealloc(iwsc); 256256694Snp sc->iwarp_softc = NULL; 257256694Snp 258256694Snp return (0); 259256694Snp} 260256694Snp 261256694Snpstatic void 262256694Snpc4iw_activate_all(struct adapter *sc, void *arg __unused) 263256694Snp{ 264256694Snp 265256694Snp if (begin_synchronized_op(sc, NULL, SLEEP_OK | INTR_OK, "t4iwact") != 0) 266256694Snp return; 267256694Snp 268284089Snp /* Activate iWARP if any port on this adapter has IFCAP_TOE enabled. */ 269284089Snp if (sc->offload_map && !uld_active(sc, ULD_IWARP)) 270284089Snp (void) t4_activate_uld(sc, ULD_IWARP); 271256694Snp 272256694Snp end_synchronized_op(sc, 0); 273256694Snp} 274256694Snp 275256694Snpstatic void 276256694Snpc4iw_deactivate_all(struct adapter *sc, void *arg __unused) 277256694Snp{ 278256694Snp 279256694Snp if (begin_synchronized_op(sc, NULL, SLEEP_OK | INTR_OK, "t4iwdea") != 0) 280256694Snp return; 281256694Snp 282284089Snp if (uld_active(sc, ULD_IWARP)) 283284089Snp (void) t4_deactivate_uld(sc, ULD_IWARP); 284256694Snp 285256694Snp end_synchronized_op(sc, 0); 286256694Snp} 287256694Snp 288256694Snpstatic int 289256694Snpc4iw_mod_load(void) 290256694Snp{ 291256694Snp int rc; 292256694Snp 293256694Snp rc = -c4iw_cm_init(); 294256694Snp if (rc != 0) 295256694Snp return (rc); 296256694Snp 297256694Snp rc = t4_register_uld(&c4iw_uld_info); 298256694Snp if (rc != 0) { 299256694Snp c4iw_cm_term(); 300256694Snp return (rc); 301256694Snp } 302256694Snp 303256694Snp t4_iterate(c4iw_activate_all, NULL); 304256694Snp 305256694Snp return (rc); 306256694Snp} 307256694Snp 308256694Snpstatic int 309256694Snpc4iw_mod_unload(void) 310256694Snp{ 311256694Snp 312256694Snp t4_iterate(c4iw_deactivate_all, NULL); 313256694Snp 314256694Snp c4iw_cm_term(); 315256694Snp 316256694Snp if (t4_unregister_uld(&c4iw_uld_info) == EBUSY) 317256694Snp return (EBUSY); 318256694Snp 319256694Snp return (0); 320256694Snp} 321256694Snp 322256694Snp#endif 323256694Snp#undef MODULE_VERSION 324256694Snp#include <sys/module.h> 325256694Snp 326256694Snp/* 327256694Snp * t4_tom won't load on kernels without TCP_OFFLOAD and this module's dependency 328256694Snp * on t4_tom ensures that it won't either. So we don't directly check for 329256694Snp * TCP_OFFLOAD here. 330256694Snp */ 331256694Snpstatic int 332256694Snpc4iw_modevent(module_t mod, int cmd, void *arg) 333256694Snp{ 334256694Snp int rc = 0; 335256694Snp 336256694Snp#ifdef TCP_OFFLOAD 337256694Snp switch (cmd) { 338256694Snp case MOD_LOAD: 339256694Snp rc = c4iw_mod_load(); 340256694Snp if (rc == 0) 341256694Snp printf("iw_cxgbe: Chelsio T4/T5 RDMA driver loaded.\n"); 342256694Snp break; 343256694Snp 344256694Snp case MOD_UNLOAD: 345256694Snp rc = c4iw_mod_unload(); 346256694Snp break; 347256694Snp 348256694Snp default: 349256694Snp rc = EINVAL; 350256694Snp } 351256694Snp#else 352256694Snp printf("t4_tom: compiled without TCP_OFFLOAD support.\n"); 353256694Snp rc = EOPNOTSUPP; 354256694Snp#endif 355256694Snp return (rc); 356256694Snp} 357256694Snp 358256694Snpstatic moduledata_t c4iw_mod_data = { 359256694Snp "iw_cxgbe", 360256694Snp c4iw_modevent, 361256694Snp 0 362256694Snp}; 363256694Snp 364256694SnpMODULE_VERSION(iw_cxgbe, 1); 365256819SnpMODULE_DEPEND(iw_cxgbe, t4nex, 1, 1, 1); 366256694SnpMODULE_DEPEND(iw_cxgbe, t4_tom, 1, 1, 1); 367256694SnpMODULE_DEPEND(iw_cxgbe, ibcore, 1, 1, 1); 368256694SnpDECLARE_MODULE(iw_cxgbe, c4iw_mod_data, SI_SUB_EXEC, SI_ORDER_ANY); 369