Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2009-2010 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 <linux/module.h> |
| 33 | #include <linux/moduleparam.h> |
| 34 | #include <linux/debugfs.h> |
Vipul Pandya | e572568 | 2012-05-21 17:31:13 +0530 | [diff] [blame] | 35 | #include <linux/vmalloc.h> |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 36 | |
| 37 | #include <rdma/ib_verbs.h> |
| 38 | |
| 39 | #include "iw_cxgb4.h" |
| 40 | |
| 41 | #define DRV_VERSION "0.1" |
| 42 | |
| 43 | MODULE_AUTHOR("Steve Wise"); |
Vipul Pandya | f079af7 | 2013-03-14 05:08:58 +0000 | [diff] [blame] | 44 | MODULE_DESCRIPTION("Chelsio T4/T5 RDMA Driver"); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 45 | MODULE_LICENSE("Dual BSD/GPL"); |
| 46 | MODULE_VERSION(DRV_VERSION); |
| 47 | |
Vipul Pandya | 80ccdd6 | 2013-03-14 05:09:00 +0000 | [diff] [blame] | 48 | static int allow_db_fc_on_t5; |
| 49 | module_param(allow_db_fc_on_t5, int, 0644); |
| 50 | MODULE_PARM_DESC(allow_db_fc_on_t5, |
| 51 | "Allow DB Flow Control on T5 (default = 0)"); |
| 52 | |
| 53 | static int allow_db_coalescing_on_t5; |
| 54 | module_param(allow_db_coalescing_on_t5, int, 0644); |
| 55 | MODULE_PARM_DESC(allow_db_coalescing_on_t5, |
| 56 | "Allow DB Coalescing on T5 (default = 0)"); |
| 57 | |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 58 | struct uld_ctx { |
| 59 | struct list_head entry; |
| 60 | struct cxgb4_lld_info lldi; |
| 61 | struct c4iw_dev *dev; |
| 62 | }; |
| 63 | |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 64 | static LIST_HEAD(uld_ctx_list); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 65 | static DEFINE_MUTEX(dev_mutex); |
| 66 | |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 67 | #define DB_FC_RESUME_SIZE 64 |
| 68 | #define DB_FC_RESUME_DELAY 1 |
| 69 | #define DB_FC_DRAIN_THRESH 0 |
| 70 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 71 | static struct dentry *c4iw_debugfs_root; |
| 72 | |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 73 | struct c4iw_debugfs_data { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 74 | struct c4iw_dev *devp; |
| 75 | char *buf; |
| 76 | int bufsize; |
| 77 | int pos; |
| 78 | }; |
| 79 | |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 80 | /* registered cxgb4 netlink callbacks */ |
| 81 | static struct ibnl_client_cbs c4iw_nl_cb_table[] = { |
| 82 | [RDMA_NL_IWPM_REG_PID] = {.dump = iwpm_register_pid_cb}, |
| 83 | [RDMA_NL_IWPM_ADD_MAPPING] = {.dump = iwpm_add_mapping_cb}, |
| 84 | [RDMA_NL_IWPM_QUERY_MAPPING] = {.dump = iwpm_add_and_query_mapping_cb}, |
| 85 | [RDMA_NL_IWPM_HANDLE_ERR] = {.dump = iwpm_mapping_error_cb}, |
| 86 | [RDMA_NL_IWPM_MAPINFO] = {.dump = iwpm_mapping_info_cb}, |
| 87 | [RDMA_NL_IWPM_MAPINFO_NUM] = {.dump = iwpm_ack_mapping_info_cb} |
| 88 | }; |
| 89 | |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 90 | static int count_idrs(int id, void *p, void *data) |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 91 | { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 92 | int *countp = data; |
| 93 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 94 | *countp = *countp + 1; |
| 95 | return 0; |
| 96 | } |
| 97 | |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 98 | static ssize_t debugfs_read(struct file *file, char __user *buf, size_t count, |
| 99 | loff_t *ppos) |
| 100 | { |
| 101 | struct c4iw_debugfs_data *d = file->private_data; |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 102 | |
Steve Wise | 3160977 | 2010-09-29 18:21:33 +0000 | [diff] [blame] | 103 | return simple_read_from_buffer(buf, count, ppos, d->buf, d->pos); |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 104 | } |
| 105 | |
| 106 | static int dump_qp(int id, void *p, void *data) |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 107 | { |
| 108 | struct c4iw_qp *qp = p; |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 109 | struct c4iw_debugfs_data *qpd = data; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 110 | int space; |
| 111 | int cc; |
| 112 | |
| 113 | if (id != qp->wq.sq.qid) |
| 114 | return 0; |
| 115 | |
| 116 | space = qpd->bufsize - qpd->pos - 1; |
| 117 | if (space == 0) |
| 118 | return 1; |
| 119 | |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 120 | if (qp->ep) { |
| 121 | if (qp->ep->com.local_addr.ss_family == AF_INET) { |
| 122 | struct sockaddr_in *lsin = (struct sockaddr_in *) |
| 123 | &qp->ep->com.local_addr; |
| 124 | struct sockaddr_in *rsin = (struct sockaddr_in *) |
| 125 | &qp->ep->com.remote_addr; |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 126 | struct sockaddr_in *mapped_lsin = (struct sockaddr_in *) |
| 127 | &qp->ep->com.mapped_local_addr; |
| 128 | struct sockaddr_in *mapped_rsin = (struct sockaddr_in *) |
| 129 | &qp->ep->com.mapped_remote_addr; |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 130 | |
| 131 | cc = snprintf(qpd->buf + qpd->pos, space, |
| 132 | "rc qp sq id %u rq id %u state %u " |
| 133 | "onchip %u ep tid %u state %u " |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 134 | "%pI4:%u/%u->%pI4:%u/%u\n", |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 135 | qp->wq.sq.qid, qp->wq.rq.qid, |
| 136 | (int)qp->attr.state, |
| 137 | qp->wq.sq.flags & T4_SQ_ONCHIP, |
| 138 | qp->ep->hwtid, (int)qp->ep->com.state, |
| 139 | &lsin->sin_addr, ntohs(lsin->sin_port), |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 140 | ntohs(mapped_lsin->sin_port), |
| 141 | &rsin->sin_addr, ntohs(rsin->sin_port), |
| 142 | ntohs(mapped_rsin->sin_port)); |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 143 | } else { |
| 144 | struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *) |
| 145 | &qp->ep->com.local_addr; |
| 146 | struct sockaddr_in6 *rsin6 = (struct sockaddr_in6 *) |
| 147 | &qp->ep->com.remote_addr; |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 148 | struct sockaddr_in6 *mapped_lsin6 = |
| 149 | (struct sockaddr_in6 *) |
| 150 | &qp->ep->com.mapped_local_addr; |
| 151 | struct sockaddr_in6 *mapped_rsin6 = |
| 152 | (struct sockaddr_in6 *) |
| 153 | &qp->ep->com.mapped_remote_addr; |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 154 | |
| 155 | cc = snprintf(qpd->buf + qpd->pos, space, |
| 156 | "rc qp sq id %u rq id %u state %u " |
| 157 | "onchip %u ep tid %u state %u " |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 158 | "%pI6:%u/%u->%pI6:%u/%u\n", |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 159 | qp->wq.sq.qid, qp->wq.rq.qid, |
| 160 | (int)qp->attr.state, |
| 161 | qp->wq.sq.flags & T4_SQ_ONCHIP, |
| 162 | qp->ep->hwtid, (int)qp->ep->com.state, |
| 163 | &lsin6->sin6_addr, |
| 164 | ntohs(lsin6->sin6_port), |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 165 | ntohs(mapped_lsin6->sin6_port), |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 166 | &rsin6->sin6_addr, |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 167 | ntohs(rsin6->sin6_port), |
| 168 | ntohs(mapped_rsin6->sin6_port)); |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 169 | } |
| 170 | } else |
Steve Wise | db5d040 | 2011-03-11 22:29:50 +0000 | [diff] [blame] | 171 | cc = snprintf(qpd->buf + qpd->pos, space, |
| 172 | "qp sq id %u rq id %u state %u onchip %u\n", |
| 173 | qp->wq.sq.qid, qp->wq.rq.qid, |
| 174 | (int)qp->attr.state, |
| 175 | qp->wq.sq.flags & T4_SQ_ONCHIP); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 176 | if (cc < space) |
| 177 | qpd->pos += cc; |
| 178 | return 0; |
| 179 | } |
| 180 | |
| 181 | static int qp_release(struct inode *inode, struct file *file) |
| 182 | { |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 183 | struct c4iw_debugfs_data *qpd = file->private_data; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 184 | if (!qpd) { |
| 185 | printk(KERN_INFO "%s null qpd?\n", __func__); |
| 186 | return 0; |
| 187 | } |
Vipul Pandya | d716a2a | 2012-05-18 15:29:31 +0530 | [diff] [blame] | 188 | vfree(qpd->buf); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 189 | kfree(qpd); |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | static int qp_open(struct inode *inode, struct file *file) |
| 194 | { |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 195 | struct c4iw_debugfs_data *qpd; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 196 | int ret = 0; |
| 197 | int count = 1; |
| 198 | |
| 199 | qpd = kmalloc(sizeof *qpd, GFP_KERNEL); |
| 200 | if (!qpd) { |
| 201 | ret = -ENOMEM; |
| 202 | goto out; |
| 203 | } |
| 204 | qpd->devp = inode->i_private; |
| 205 | qpd->pos = 0; |
| 206 | |
| 207 | spin_lock_irq(&qpd->devp->lock); |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 208 | idr_for_each(&qpd->devp->qpidr, count_idrs, &count); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 209 | spin_unlock_irq(&qpd->devp->lock); |
| 210 | |
| 211 | qpd->bufsize = count * 128; |
Vipul Pandya | d716a2a | 2012-05-18 15:29:31 +0530 | [diff] [blame] | 212 | qpd->buf = vmalloc(qpd->bufsize); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 213 | if (!qpd->buf) { |
| 214 | ret = -ENOMEM; |
| 215 | goto err1; |
| 216 | } |
| 217 | |
| 218 | spin_lock_irq(&qpd->devp->lock); |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 219 | idr_for_each(&qpd->devp->qpidr, dump_qp, qpd); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 220 | spin_unlock_irq(&qpd->devp->lock); |
| 221 | |
| 222 | qpd->buf[qpd->pos++] = 0; |
| 223 | file->private_data = qpd; |
| 224 | goto out; |
| 225 | err1: |
| 226 | kfree(qpd); |
| 227 | out: |
| 228 | return ret; |
| 229 | } |
| 230 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 231 | static const struct file_operations qp_debugfs_fops = { |
| 232 | .owner = THIS_MODULE, |
| 233 | .open = qp_open, |
| 234 | .release = qp_release, |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 235 | .read = debugfs_read, |
Steve Wise | 8bbac89 | 2010-09-29 14:11:12 +0000 | [diff] [blame] | 236 | .llseek = default_llseek, |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 237 | }; |
| 238 | |
| 239 | static int dump_stag(int id, void *p, void *data) |
| 240 | { |
| 241 | struct c4iw_debugfs_data *stagd = data; |
| 242 | int space; |
| 243 | int cc; |
| 244 | |
| 245 | space = stagd->bufsize - stagd->pos - 1; |
| 246 | if (space == 0) |
| 247 | return 1; |
| 248 | |
| 249 | cc = snprintf(stagd->buf + stagd->pos, space, "0x%x\n", id<<8); |
| 250 | if (cc < space) |
| 251 | stagd->pos += cc; |
| 252 | return 0; |
| 253 | } |
| 254 | |
| 255 | static int stag_release(struct inode *inode, struct file *file) |
| 256 | { |
| 257 | struct c4iw_debugfs_data *stagd = file->private_data; |
| 258 | if (!stagd) { |
| 259 | printk(KERN_INFO "%s null stagd?\n", __func__); |
| 260 | return 0; |
| 261 | } |
| 262 | kfree(stagd->buf); |
| 263 | kfree(stagd); |
| 264 | return 0; |
| 265 | } |
| 266 | |
| 267 | static int stag_open(struct inode *inode, struct file *file) |
| 268 | { |
| 269 | struct c4iw_debugfs_data *stagd; |
| 270 | int ret = 0; |
| 271 | int count = 1; |
| 272 | |
| 273 | stagd = kmalloc(sizeof *stagd, GFP_KERNEL); |
| 274 | if (!stagd) { |
| 275 | ret = -ENOMEM; |
| 276 | goto out; |
| 277 | } |
| 278 | stagd->devp = inode->i_private; |
| 279 | stagd->pos = 0; |
| 280 | |
| 281 | spin_lock_irq(&stagd->devp->lock); |
| 282 | idr_for_each(&stagd->devp->mmidr, count_idrs, &count); |
| 283 | spin_unlock_irq(&stagd->devp->lock); |
| 284 | |
| 285 | stagd->bufsize = count * sizeof("0x12345678\n"); |
| 286 | stagd->buf = kmalloc(stagd->bufsize, GFP_KERNEL); |
| 287 | if (!stagd->buf) { |
| 288 | ret = -ENOMEM; |
| 289 | goto err1; |
| 290 | } |
| 291 | |
| 292 | spin_lock_irq(&stagd->devp->lock); |
| 293 | idr_for_each(&stagd->devp->mmidr, dump_stag, stagd); |
| 294 | spin_unlock_irq(&stagd->devp->lock); |
| 295 | |
| 296 | stagd->buf[stagd->pos++] = 0; |
| 297 | file->private_data = stagd; |
| 298 | goto out; |
| 299 | err1: |
| 300 | kfree(stagd); |
| 301 | out: |
| 302 | return ret; |
| 303 | } |
| 304 | |
| 305 | static const struct file_operations stag_debugfs_fops = { |
| 306 | .owner = THIS_MODULE, |
| 307 | .open = stag_open, |
| 308 | .release = stag_release, |
| 309 | .read = debugfs_read, |
Steve Wise | 8bbac89 | 2010-09-29 14:11:12 +0000 | [diff] [blame] | 310 | .llseek = default_llseek, |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 311 | }; |
| 312 | |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 313 | static char *db_state_str[] = {"NORMAL", "FLOW_CONTROL", "RECOVERY", "STOPPED"}; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 314 | |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 315 | static int stats_show(struct seq_file *seq, void *v) |
| 316 | { |
| 317 | struct c4iw_dev *dev = seq->private; |
| 318 | |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 319 | seq_printf(seq, " Object: %10s %10s %10s %10s\n", "Total", "Current", |
| 320 | "Max", "Fail"); |
| 321 | seq_printf(seq, " PDID: %10llu %10llu %10llu %10llu\n", |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 322 | dev->rdev.stats.pd.total, dev->rdev.stats.pd.cur, |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 323 | dev->rdev.stats.pd.max, dev->rdev.stats.pd.fail); |
| 324 | seq_printf(seq, " QID: %10llu %10llu %10llu %10llu\n", |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 325 | dev->rdev.stats.qid.total, dev->rdev.stats.qid.cur, |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 326 | dev->rdev.stats.qid.max, dev->rdev.stats.qid.fail); |
| 327 | seq_printf(seq, " TPTMEM: %10llu %10llu %10llu %10llu\n", |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 328 | dev->rdev.stats.stag.total, dev->rdev.stats.stag.cur, |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 329 | dev->rdev.stats.stag.max, dev->rdev.stats.stag.fail); |
| 330 | seq_printf(seq, " PBLMEM: %10llu %10llu %10llu %10llu\n", |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 331 | dev->rdev.stats.pbl.total, dev->rdev.stats.pbl.cur, |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 332 | dev->rdev.stats.pbl.max, dev->rdev.stats.pbl.fail); |
| 333 | seq_printf(seq, " RQTMEM: %10llu %10llu %10llu %10llu\n", |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 334 | dev->rdev.stats.rqt.total, dev->rdev.stats.rqt.cur, |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 335 | dev->rdev.stats.rqt.max, dev->rdev.stats.rqt.fail); |
| 336 | seq_printf(seq, " OCQPMEM: %10llu %10llu %10llu %10llu\n", |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 337 | dev->rdev.stats.ocqp.total, dev->rdev.stats.ocqp.cur, |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 338 | dev->rdev.stats.ocqp.max, dev->rdev.stats.ocqp.fail); |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 339 | seq_printf(seq, " DB FULL: %10llu\n", dev->rdev.stats.db_full); |
| 340 | seq_printf(seq, " DB EMPTY: %10llu\n", dev->rdev.stats.db_empty); |
| 341 | seq_printf(seq, " DB DROP: %10llu\n", dev->rdev.stats.db_drop); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 342 | seq_printf(seq, " DB State: %s Transitions %llu FC Interruptions %llu\n", |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 343 | db_state_str[dev->db_state], |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 344 | dev->rdev.stats.db_state_transitions, |
| 345 | dev->rdev.stats.db_fc_interruptions); |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 346 | seq_printf(seq, "TCAM_FULL: %10llu\n", dev->rdev.stats.tcam_full); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 347 | seq_printf(seq, "ACT_OFLD_CONN_FAILS: %10llu\n", |
| 348 | dev->rdev.stats.act_ofld_conn_fails); |
| 349 | seq_printf(seq, "PAS_OFLD_CONN_FAILS: %10llu\n", |
| 350 | dev->rdev.stats.pas_ofld_conn_fails); |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 351 | return 0; |
| 352 | } |
| 353 | |
| 354 | static int stats_open(struct inode *inode, struct file *file) |
| 355 | { |
| 356 | return single_open(file, stats_show, inode->i_private); |
| 357 | } |
| 358 | |
| 359 | static ssize_t stats_clear(struct file *file, const char __user *buf, |
| 360 | size_t count, loff_t *pos) |
| 361 | { |
| 362 | struct c4iw_dev *dev = ((struct seq_file *)file->private_data)->private; |
| 363 | |
| 364 | mutex_lock(&dev->rdev.stats.lock); |
| 365 | dev->rdev.stats.pd.max = 0; |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 366 | dev->rdev.stats.pd.fail = 0; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 367 | dev->rdev.stats.qid.max = 0; |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 368 | dev->rdev.stats.qid.fail = 0; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 369 | dev->rdev.stats.stag.max = 0; |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 370 | dev->rdev.stats.stag.fail = 0; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 371 | dev->rdev.stats.pbl.max = 0; |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 372 | dev->rdev.stats.pbl.fail = 0; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 373 | dev->rdev.stats.rqt.max = 0; |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 374 | dev->rdev.stats.rqt.fail = 0; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 375 | dev->rdev.stats.ocqp.max = 0; |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 376 | dev->rdev.stats.ocqp.fail = 0; |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 377 | dev->rdev.stats.db_full = 0; |
| 378 | dev->rdev.stats.db_empty = 0; |
| 379 | dev->rdev.stats.db_drop = 0; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 380 | dev->rdev.stats.db_state_transitions = 0; |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 381 | dev->rdev.stats.tcam_full = 0; |
| 382 | dev->rdev.stats.act_ofld_conn_fails = 0; |
| 383 | dev->rdev.stats.pas_ofld_conn_fails = 0; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 384 | mutex_unlock(&dev->rdev.stats.lock); |
| 385 | return count; |
| 386 | } |
| 387 | |
| 388 | static const struct file_operations stats_debugfs_fops = { |
| 389 | .owner = THIS_MODULE, |
| 390 | .open = stats_open, |
| 391 | .release = single_release, |
| 392 | .read = seq_read, |
| 393 | .llseek = seq_lseek, |
| 394 | .write = stats_clear, |
| 395 | }; |
| 396 | |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 397 | static int dump_ep(int id, void *p, void *data) |
| 398 | { |
| 399 | struct c4iw_ep *ep = p; |
| 400 | struct c4iw_debugfs_data *epd = data; |
| 401 | int space; |
| 402 | int cc; |
| 403 | |
| 404 | space = epd->bufsize - epd->pos - 1; |
| 405 | if (space == 0) |
| 406 | return 1; |
| 407 | |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 408 | if (ep->com.local_addr.ss_family == AF_INET) { |
| 409 | struct sockaddr_in *lsin = (struct sockaddr_in *) |
| 410 | &ep->com.local_addr; |
| 411 | struct sockaddr_in *rsin = (struct sockaddr_in *) |
| 412 | &ep->com.remote_addr; |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 413 | struct sockaddr_in *mapped_lsin = (struct sockaddr_in *) |
| 414 | &ep->com.mapped_local_addr; |
| 415 | struct sockaddr_in *mapped_rsin = (struct sockaddr_in *) |
| 416 | &ep->com.mapped_remote_addr; |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 417 | |
| 418 | cc = snprintf(epd->buf + epd->pos, space, |
| 419 | "ep %p cm_id %p qp %p state %d flags 0x%lx " |
| 420 | "history 0x%lx hwtid %d atid %d " |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 421 | "%pI4:%d/%d <-> %pI4:%d/%d\n", |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 422 | ep, ep->com.cm_id, ep->com.qp, |
| 423 | (int)ep->com.state, ep->com.flags, |
| 424 | ep->com.history, ep->hwtid, ep->atid, |
| 425 | &lsin->sin_addr, ntohs(lsin->sin_port), |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 426 | ntohs(mapped_lsin->sin_port), |
| 427 | &rsin->sin_addr, ntohs(rsin->sin_port), |
| 428 | ntohs(mapped_rsin->sin_port)); |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 429 | } else { |
| 430 | struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *) |
| 431 | &ep->com.local_addr; |
| 432 | struct sockaddr_in6 *rsin6 = (struct sockaddr_in6 *) |
| 433 | &ep->com.remote_addr; |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 434 | struct sockaddr_in6 *mapped_lsin6 = (struct sockaddr_in6 *) |
| 435 | &ep->com.mapped_local_addr; |
| 436 | struct sockaddr_in6 *mapped_rsin6 = (struct sockaddr_in6 *) |
| 437 | &ep->com.mapped_remote_addr; |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 438 | |
| 439 | cc = snprintf(epd->buf + epd->pos, space, |
| 440 | "ep %p cm_id %p qp %p state %d flags 0x%lx " |
| 441 | "history 0x%lx hwtid %d atid %d " |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 442 | "%pI6:%d/%d <-> %pI6:%d/%d\n", |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 443 | ep, ep->com.cm_id, ep->com.qp, |
| 444 | (int)ep->com.state, ep->com.flags, |
| 445 | ep->com.history, ep->hwtid, ep->atid, |
| 446 | &lsin6->sin6_addr, ntohs(lsin6->sin6_port), |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 447 | ntohs(mapped_lsin6->sin6_port), |
| 448 | &rsin6->sin6_addr, ntohs(rsin6->sin6_port), |
| 449 | ntohs(mapped_rsin6->sin6_port)); |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 450 | } |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 451 | if (cc < space) |
| 452 | epd->pos += cc; |
| 453 | return 0; |
| 454 | } |
| 455 | |
| 456 | static int dump_listen_ep(int id, void *p, void *data) |
| 457 | { |
| 458 | struct c4iw_listen_ep *ep = p; |
| 459 | struct c4iw_debugfs_data *epd = data; |
| 460 | int space; |
| 461 | int cc; |
| 462 | |
| 463 | space = epd->bufsize - epd->pos - 1; |
| 464 | if (space == 0) |
| 465 | return 1; |
| 466 | |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 467 | if (ep->com.local_addr.ss_family == AF_INET) { |
| 468 | struct sockaddr_in *lsin = (struct sockaddr_in *) |
| 469 | &ep->com.local_addr; |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 470 | struct sockaddr_in *mapped_lsin = (struct sockaddr_in *) |
| 471 | &ep->com.mapped_local_addr; |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 472 | |
| 473 | cc = snprintf(epd->buf + epd->pos, space, |
| 474 | "ep %p cm_id %p state %d flags 0x%lx stid %d " |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 475 | "backlog %d %pI4:%d/%d\n", |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 476 | ep, ep->com.cm_id, (int)ep->com.state, |
| 477 | ep->com.flags, ep->stid, ep->backlog, |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 478 | &lsin->sin_addr, ntohs(lsin->sin_port), |
| 479 | ntohs(mapped_lsin->sin_port)); |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 480 | } else { |
| 481 | struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *) |
| 482 | &ep->com.local_addr; |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 483 | struct sockaddr_in6 *mapped_lsin6 = (struct sockaddr_in6 *) |
| 484 | &ep->com.mapped_local_addr; |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 485 | |
| 486 | cc = snprintf(epd->buf + epd->pos, space, |
| 487 | "ep %p cm_id %p state %d flags 0x%lx stid %d " |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 488 | "backlog %d %pI6:%d/%d\n", |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 489 | ep, ep->com.cm_id, (int)ep->com.state, |
| 490 | ep->com.flags, ep->stid, ep->backlog, |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 491 | &lsin6->sin6_addr, ntohs(lsin6->sin6_port), |
| 492 | ntohs(mapped_lsin6->sin6_port)); |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 493 | } |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 494 | if (cc < space) |
| 495 | epd->pos += cc; |
| 496 | return 0; |
| 497 | } |
| 498 | |
| 499 | static int ep_release(struct inode *inode, struct file *file) |
| 500 | { |
| 501 | struct c4iw_debugfs_data *epd = file->private_data; |
| 502 | if (!epd) { |
| 503 | pr_info("%s null qpd?\n", __func__); |
| 504 | return 0; |
| 505 | } |
| 506 | vfree(epd->buf); |
| 507 | kfree(epd); |
| 508 | return 0; |
| 509 | } |
| 510 | |
| 511 | static int ep_open(struct inode *inode, struct file *file) |
| 512 | { |
| 513 | struct c4iw_debugfs_data *epd; |
| 514 | int ret = 0; |
| 515 | int count = 1; |
| 516 | |
| 517 | epd = kmalloc(sizeof(*epd), GFP_KERNEL); |
| 518 | if (!epd) { |
| 519 | ret = -ENOMEM; |
| 520 | goto out; |
| 521 | } |
| 522 | epd->devp = inode->i_private; |
| 523 | epd->pos = 0; |
| 524 | |
| 525 | spin_lock_irq(&epd->devp->lock); |
| 526 | idr_for_each(&epd->devp->hwtid_idr, count_idrs, &count); |
| 527 | idr_for_each(&epd->devp->atid_idr, count_idrs, &count); |
| 528 | idr_for_each(&epd->devp->stid_idr, count_idrs, &count); |
| 529 | spin_unlock_irq(&epd->devp->lock); |
| 530 | |
| 531 | epd->bufsize = count * 160; |
| 532 | epd->buf = vmalloc(epd->bufsize); |
| 533 | if (!epd->buf) { |
| 534 | ret = -ENOMEM; |
| 535 | goto err1; |
| 536 | } |
| 537 | |
| 538 | spin_lock_irq(&epd->devp->lock); |
| 539 | idr_for_each(&epd->devp->hwtid_idr, dump_ep, epd); |
| 540 | idr_for_each(&epd->devp->atid_idr, dump_ep, epd); |
| 541 | idr_for_each(&epd->devp->stid_idr, dump_listen_ep, epd); |
| 542 | spin_unlock_irq(&epd->devp->lock); |
| 543 | |
| 544 | file->private_data = epd; |
| 545 | goto out; |
| 546 | err1: |
| 547 | kfree(epd); |
| 548 | out: |
| 549 | return ret; |
| 550 | } |
| 551 | |
| 552 | static const struct file_operations ep_debugfs_fops = { |
| 553 | .owner = THIS_MODULE, |
| 554 | .open = ep_open, |
| 555 | .release = ep_release, |
| 556 | .read = debugfs_read, |
| 557 | }; |
| 558 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 559 | static int setup_debugfs(struct c4iw_dev *devp) |
| 560 | { |
| 561 | struct dentry *de; |
| 562 | |
| 563 | if (!devp->debugfs_root) |
| 564 | return -1; |
| 565 | |
| 566 | de = debugfs_create_file("qps", S_IWUSR, devp->debugfs_root, |
| 567 | (void *)devp, &qp_debugfs_fops); |
| 568 | if (de && de->d_inode) |
| 569 | de->d_inode->i_size = 4096; |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 570 | |
| 571 | de = debugfs_create_file("stags", S_IWUSR, devp->debugfs_root, |
| 572 | (void *)devp, &stag_debugfs_fops); |
| 573 | if (de && de->d_inode) |
| 574 | de->d_inode->i_size = 4096; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 575 | |
| 576 | de = debugfs_create_file("stats", S_IWUSR, devp->debugfs_root, |
| 577 | (void *)devp, &stats_debugfs_fops); |
| 578 | if (de && de->d_inode) |
| 579 | de->d_inode->i_size = 4096; |
| 580 | |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 581 | de = debugfs_create_file("eps", S_IWUSR, devp->debugfs_root, |
| 582 | (void *)devp, &ep_debugfs_fops); |
| 583 | if (de && de->d_inode) |
| 584 | de->d_inode->i_size = 4096; |
| 585 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 586 | return 0; |
| 587 | } |
| 588 | |
| 589 | void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev, |
| 590 | struct c4iw_dev_ucontext *uctx) |
| 591 | { |
| 592 | struct list_head *pos, *nxt; |
| 593 | struct c4iw_qid_list *entry; |
| 594 | |
| 595 | mutex_lock(&uctx->lock); |
| 596 | list_for_each_safe(pos, nxt, &uctx->qpids) { |
| 597 | entry = list_entry(pos, struct c4iw_qid_list, entry); |
| 598 | list_del_init(&entry->entry); |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 599 | if (!(entry->qid & rdev->qpmask)) { |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 600 | c4iw_put_resource(&rdev->resource.qid_table, |
| 601 | entry->qid); |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 602 | mutex_lock(&rdev->stats.lock); |
| 603 | rdev->stats.qid.cur -= rdev->qpmask + 1; |
| 604 | mutex_unlock(&rdev->stats.lock); |
| 605 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 606 | kfree(entry); |
| 607 | } |
| 608 | |
| 609 | list_for_each_safe(pos, nxt, &uctx->qpids) { |
| 610 | entry = list_entry(pos, struct c4iw_qid_list, entry); |
| 611 | list_del_init(&entry->entry); |
| 612 | kfree(entry); |
| 613 | } |
| 614 | mutex_unlock(&uctx->lock); |
| 615 | } |
| 616 | |
| 617 | void c4iw_init_dev_ucontext(struct c4iw_rdev *rdev, |
| 618 | struct c4iw_dev_ucontext *uctx) |
| 619 | { |
| 620 | INIT_LIST_HEAD(&uctx->qpids); |
| 621 | INIT_LIST_HEAD(&uctx->cqids); |
| 622 | mutex_init(&uctx->lock); |
| 623 | } |
| 624 | |
| 625 | /* Caller takes care of locking if needed */ |
| 626 | static int c4iw_rdev_open(struct c4iw_rdev *rdev) |
| 627 | { |
| 628 | int err; |
| 629 | |
| 630 | c4iw_init_dev_ucontext(rdev, &rdev->uctx); |
| 631 | |
| 632 | /* |
| 633 | * qpshift is the number of bits to shift the qpid left in order |
| 634 | * to get the correct address of the doorbell for that qp. |
| 635 | */ |
| 636 | rdev->qpshift = PAGE_SHIFT - ilog2(rdev->lldi.udb_density); |
| 637 | rdev->qpmask = rdev->lldi.udb_density - 1; |
| 638 | rdev->cqshift = PAGE_SHIFT - ilog2(rdev->lldi.ucq_density); |
| 639 | rdev->cqmask = rdev->lldi.ucq_density - 1; |
| 640 | PDBG("%s dev %s stag start 0x%0x size 0x%0x num stags %d " |
Steve Wise | 93fb72e | 2010-06-23 15:46:55 +0000 | [diff] [blame] | 641 | "pbl start 0x%0x size 0x%0x rq start 0x%0x size 0x%0x " |
| 642 | "qp qid start %u size %u cq qid start %u size %u\n", |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 643 | __func__, pci_name(rdev->lldi.pdev), rdev->lldi.vr->stag.start, |
| 644 | rdev->lldi.vr->stag.size, c4iw_num_stags(rdev), |
| 645 | rdev->lldi.vr->pbl.start, |
| 646 | rdev->lldi.vr->pbl.size, rdev->lldi.vr->rq.start, |
Steve Wise | 93fb72e | 2010-06-23 15:46:55 +0000 | [diff] [blame] | 647 | rdev->lldi.vr->rq.size, |
| 648 | rdev->lldi.vr->qp.start, |
| 649 | rdev->lldi.vr->qp.size, |
| 650 | rdev->lldi.vr->cq.start, |
| 651 | rdev->lldi.vr->cq.size); |
Ben Hutchings | 649fb5e | 2013-10-27 21:50:45 +0000 | [diff] [blame] | 652 | PDBG("udb len 0x%x udb base %llx db_reg %p gts_reg %p qpshift %lu " |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 653 | "qpmask 0x%x cqshift %lu cqmask 0x%x\n", |
| 654 | (unsigned)pci_resource_len(rdev->lldi.pdev, 2), |
Ben Hutchings | 649fb5e | 2013-10-27 21:50:45 +0000 | [diff] [blame] | 655 | (u64)pci_resource_start(rdev->lldi.pdev, 2), |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 656 | rdev->lldi.db_reg, |
| 657 | rdev->lldi.gts_reg, |
| 658 | rdev->qpshift, rdev->qpmask, |
| 659 | rdev->cqshift, rdev->cqmask); |
| 660 | |
| 661 | if (c4iw_num_stags(rdev) == 0) { |
| 662 | err = -EINVAL; |
| 663 | goto err1; |
| 664 | } |
| 665 | |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 666 | rdev->stats.pd.total = T4_MAX_NUM_PD; |
| 667 | rdev->stats.stag.total = rdev->lldi.vr->stag.size; |
| 668 | rdev->stats.pbl.total = rdev->lldi.vr->pbl.size; |
| 669 | rdev->stats.rqt.total = rdev->lldi.vr->rq.size; |
| 670 | rdev->stats.ocqp.total = rdev->lldi.vr->ocq.size; |
| 671 | rdev->stats.qid.total = rdev->lldi.vr->qp.size; |
| 672 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 673 | err = c4iw_init_resource(rdev, c4iw_num_stags(rdev), T4_MAX_NUM_PD); |
| 674 | if (err) { |
| 675 | printk(KERN_ERR MOD "error %d initializing resources\n", err); |
| 676 | goto err1; |
| 677 | } |
| 678 | err = c4iw_pblpool_create(rdev); |
| 679 | if (err) { |
| 680 | printk(KERN_ERR MOD "error %d initializing pbl pool\n", err); |
| 681 | goto err2; |
| 682 | } |
| 683 | err = c4iw_rqtpool_create(rdev); |
| 684 | if (err) { |
| 685 | printk(KERN_ERR MOD "error %d initializing rqt pool\n", err); |
| 686 | goto err3; |
| 687 | } |
Steve Wise | c6d7b26 | 2010-09-13 11:23:57 -0500 | [diff] [blame] | 688 | err = c4iw_ocqp_pool_create(rdev); |
| 689 | if (err) { |
| 690 | printk(KERN_ERR MOD "error %d initializing ocqp pool\n", err); |
| 691 | goto err4; |
| 692 | } |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 693 | rdev->status_page = (struct t4_dev_status_page *) |
| 694 | __get_free_page(GFP_KERNEL); |
| 695 | if (!rdev->status_page) { |
| 696 | pr_err(MOD "error allocating status page\n"); |
| 697 | goto err4; |
| 698 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 699 | return 0; |
Steve Wise | c6d7b26 | 2010-09-13 11:23:57 -0500 | [diff] [blame] | 700 | err4: |
| 701 | c4iw_rqtpool_destroy(rdev); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 702 | err3: |
| 703 | c4iw_pblpool_destroy(rdev); |
| 704 | err2: |
| 705 | c4iw_destroy_resource(&rdev->resource); |
| 706 | err1: |
| 707 | return err; |
| 708 | } |
| 709 | |
| 710 | static void c4iw_rdev_close(struct c4iw_rdev *rdev) |
| 711 | { |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 712 | free_page((unsigned long)rdev->status_page); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 713 | c4iw_pblpool_destroy(rdev); |
| 714 | c4iw_rqtpool_destroy(rdev); |
| 715 | c4iw_destroy_resource(&rdev->resource); |
| 716 | } |
| 717 | |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 718 | static void c4iw_dealloc(struct uld_ctx *ctx) |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 719 | { |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 720 | c4iw_rdev_close(&ctx->dev->rdev); |
| 721 | idr_destroy(&ctx->dev->cqidr); |
| 722 | idr_destroy(&ctx->dev->qpidr); |
| 723 | idr_destroy(&ctx->dev->mmidr); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 724 | idr_destroy(&ctx->dev->hwtid_idr); |
| 725 | idr_destroy(&ctx->dev->stid_idr); |
| 726 | idr_destroy(&ctx->dev->atid_idr); |
Steve Wise | fa658a9 | 2014-04-09 09:38:25 -0500 | [diff] [blame] | 727 | if (ctx->dev->rdev.bar2_kva) |
| 728 | iounmap(ctx->dev->rdev.bar2_kva); |
| 729 | if (ctx->dev->rdev.oc_mw_kva) |
| 730 | iounmap(ctx->dev->rdev.oc_mw_kva); |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 731 | ib_dealloc_device(&ctx->dev->ibdev); |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 732 | iwpm_exit(RDMA_NL_C4IW); |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 733 | ctx->dev = NULL; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 734 | } |
| 735 | |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 736 | static void c4iw_remove(struct uld_ctx *ctx) |
| 737 | { |
| 738 | PDBG("%s c4iw_dev %p\n", __func__, ctx->dev); |
| 739 | c4iw_unregister_device(ctx->dev); |
| 740 | c4iw_dealloc(ctx); |
| 741 | } |
| 742 | |
| 743 | static int rdma_supported(const struct cxgb4_lld_info *infop) |
| 744 | { |
| 745 | return infop->vr->stag.size > 0 && infop->vr->pbl.size > 0 && |
| 746 | infop->vr->rq.size > 0 && infop->vr->qp.size > 0 && |
Vipul Pandya | f079af7 | 2013-03-14 05:08:58 +0000 | [diff] [blame] | 747 | infop->vr->cq.size > 0; |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 748 | } |
| 749 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 750 | static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop) |
| 751 | { |
| 752 | struct c4iw_dev *devp; |
| 753 | int ret; |
| 754 | |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 755 | if (!rdma_supported(infop)) { |
| 756 | printk(KERN_INFO MOD "%s: RDMA not supported on this device.\n", |
| 757 | pci_name(infop->pdev)); |
| 758 | return ERR_PTR(-ENOSYS); |
| 759 | } |
Vipul Pandya | f079af7 | 2013-03-14 05:08:58 +0000 | [diff] [blame] | 760 | if (!ocqp_supported(infop)) |
| 761 | pr_info("%s: On-Chip Queues not supported on this device.\n", |
| 762 | pci_name(infop->pdev)); |
Vipul Pandya | 80ccdd6 | 2013-03-14 05:09:00 +0000 | [diff] [blame] | 763 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 764 | devp = (struct c4iw_dev *)ib_alloc_device(sizeof(*devp)); |
| 765 | if (!devp) { |
| 766 | printk(KERN_ERR MOD "Cannot allocate ib device\n"); |
Steve Wise | bbe9a0a | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 767 | return ERR_PTR(-ENOMEM); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 768 | } |
| 769 | devp->rdev.lldi = *infop; |
| 770 | |
Steve Wise | fa658a9 | 2014-04-09 09:38:25 -0500 | [diff] [blame] | 771 | /* |
| 772 | * For T5 devices, we map all of BAR2 with WC. |
| 773 | * For T4 devices with onchip qp mem, we map only that part |
| 774 | * of BAR2 with WC. |
| 775 | */ |
| 776 | devp->rdev.bar2_pa = pci_resource_start(devp->rdev.lldi.pdev, 2); |
| 777 | if (is_t5(devp->rdev.lldi.adapter_type)) { |
| 778 | devp->rdev.bar2_kva = ioremap_wc(devp->rdev.bar2_pa, |
| 779 | pci_resource_len(devp->rdev.lldi.pdev, 2)); |
| 780 | if (!devp->rdev.bar2_kva) { |
| 781 | pr_err(MOD "Unable to ioremap BAR2\n"); |
Christoph Jaeger | 65b302a | 2014-04-21 17:02:42 +0200 | [diff] [blame] | 782 | ib_dealloc_device(&devp->ibdev); |
Steve Wise | fa658a9 | 2014-04-09 09:38:25 -0500 | [diff] [blame] | 783 | return ERR_PTR(-EINVAL); |
| 784 | } |
| 785 | } else if (ocqp_supported(infop)) { |
| 786 | devp->rdev.oc_mw_pa = |
| 787 | pci_resource_start(devp->rdev.lldi.pdev, 2) + |
| 788 | pci_resource_len(devp->rdev.lldi.pdev, 2) - |
| 789 | roundup_pow_of_two(devp->rdev.lldi.vr->ocq.size); |
| 790 | devp->rdev.oc_mw_kva = ioremap_wc(devp->rdev.oc_mw_pa, |
| 791 | devp->rdev.lldi.vr->ocq.size); |
| 792 | if (!devp->rdev.oc_mw_kva) { |
| 793 | pr_err(MOD "Unable to ioremap onchip mem\n"); |
Christoph Jaeger | 65b302a | 2014-04-21 17:02:42 +0200 | [diff] [blame] | 794 | ib_dealloc_device(&devp->ibdev); |
Steve Wise | fa658a9 | 2014-04-09 09:38:25 -0500 | [diff] [blame] | 795 | return ERR_PTR(-EINVAL); |
| 796 | } |
| 797 | } |
Steve Wise | c6d7b26 | 2010-09-13 11:23:57 -0500 | [diff] [blame] | 798 | |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 799 | PDBG(KERN_INFO MOD "ocq memory: " |
Steve Wise | c6d7b26 | 2010-09-13 11:23:57 -0500 | [diff] [blame] | 800 | "hw_start 0x%x size %u mw_pa 0x%lx mw_kva %p\n", |
| 801 | devp->rdev.lldi.vr->ocq.start, devp->rdev.lldi.vr->ocq.size, |
| 802 | devp->rdev.oc_mw_pa, devp->rdev.oc_mw_kva); |
| 803 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 804 | ret = c4iw_rdev_open(&devp->rdev); |
| 805 | if (ret) { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 806 | printk(KERN_ERR MOD "Unable to open CXIO rdev err %d\n", ret); |
| 807 | ib_dealloc_device(&devp->ibdev); |
Steve Wise | bbe9a0a | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 808 | return ERR_PTR(ret); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 809 | } |
| 810 | |
| 811 | idr_init(&devp->cqidr); |
| 812 | idr_init(&devp->qpidr); |
| 813 | idr_init(&devp->mmidr); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 814 | idr_init(&devp->hwtid_idr); |
| 815 | idr_init(&devp->stid_idr); |
| 816 | idr_init(&devp->atid_idr); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 817 | spin_lock_init(&devp->lock); |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 818 | mutex_init(&devp->rdev.stats.lock); |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 819 | mutex_init(&devp->db_mutex); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 820 | INIT_LIST_HEAD(&devp->db_fc_list); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 821 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 822 | if (c4iw_debugfs_root) { |
| 823 | devp->debugfs_root = debugfs_create_dir( |
| 824 | pci_name(devp->rdev.lldi.pdev), |
| 825 | c4iw_debugfs_root); |
| 826 | setup_debugfs(devp); |
| 827 | } |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 828 | |
| 829 | ret = iwpm_init(RDMA_NL_C4IW); |
| 830 | if (ret) { |
| 831 | pr_err("port mapper initialization failed with %d\n", ret); |
| 832 | ib_dealloc_device(&devp->ibdev); |
| 833 | return ERR_PTR(ret); |
| 834 | } |
| 835 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 836 | return devp; |
| 837 | } |
| 838 | |
| 839 | static void *c4iw_uld_add(const struct cxgb4_lld_info *infop) |
| 840 | { |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 841 | struct uld_ctx *ctx; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 842 | static int vers_printed; |
| 843 | int i; |
| 844 | |
| 845 | if (!vers_printed++) |
Vipul Pandya | f079af7 | 2013-03-14 05:08:58 +0000 | [diff] [blame] | 846 | pr_info("Chelsio T4/T5 RDMA Driver - version %s\n", |
| 847 | DRV_VERSION); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 848 | |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 849 | ctx = kzalloc(sizeof *ctx, GFP_KERNEL); |
| 850 | if (!ctx) { |
| 851 | ctx = ERR_PTR(-ENOMEM); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 852 | goto out; |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 853 | } |
| 854 | ctx->lldi = *infop; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 855 | |
| 856 | PDBG("%s found device %s nchan %u nrxq %u ntxq %u nports %u\n", |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 857 | __func__, pci_name(ctx->lldi.pdev), |
| 858 | ctx->lldi.nchan, ctx->lldi.nrxq, |
| 859 | ctx->lldi.ntxq, ctx->lldi.nports); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 860 | |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 861 | mutex_lock(&dev_mutex); |
| 862 | list_add_tail(&ctx->entry, &uld_ctx_list); |
| 863 | mutex_unlock(&dev_mutex); |
| 864 | |
| 865 | for (i = 0; i < ctx->lldi.nrxq; i++) |
| 866 | PDBG("rxqid[%u] %u\n", i, ctx->lldi.rxq_ids[i]); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 867 | out: |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 868 | return ctx; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 869 | } |
| 870 | |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 871 | static inline struct sk_buff *copy_gl_to_skb_pkt(const struct pkt_gl *gl, |
| 872 | const __be64 *rsp, |
| 873 | u32 pktshift) |
| 874 | { |
| 875 | struct sk_buff *skb; |
| 876 | |
| 877 | /* |
| 878 | * Allocate space for cpl_pass_accept_req which will be synthesized by |
| 879 | * driver. Once the driver synthesizes the request the skb will go |
| 880 | * through the regular cpl_pass_accept_req processing. |
| 881 | * The math here assumes sizeof cpl_pass_accept_req >= sizeof |
| 882 | * cpl_rx_pkt. |
| 883 | */ |
| 884 | skb = alloc_skb(gl->tot_len + sizeof(struct cpl_pass_accept_req) + |
| 885 | sizeof(struct rss_header) - pktshift, GFP_ATOMIC); |
| 886 | if (unlikely(!skb)) |
| 887 | return NULL; |
| 888 | |
| 889 | __skb_put(skb, gl->tot_len + sizeof(struct cpl_pass_accept_req) + |
| 890 | sizeof(struct rss_header) - pktshift); |
| 891 | |
| 892 | /* |
| 893 | * This skb will contain: |
| 894 | * rss_header from the rspq descriptor (1 flit) |
| 895 | * cpl_rx_pkt struct from the rspq descriptor (2 flits) |
| 896 | * space for the difference between the size of an |
| 897 | * rx_pkt and pass_accept_req cpl (1 flit) |
| 898 | * the packet data from the gl |
| 899 | */ |
| 900 | skb_copy_to_linear_data(skb, rsp, sizeof(struct cpl_pass_accept_req) + |
| 901 | sizeof(struct rss_header)); |
| 902 | skb_copy_to_linear_data_offset(skb, sizeof(struct rss_header) + |
| 903 | sizeof(struct cpl_pass_accept_req), |
| 904 | gl->va + pktshift, |
| 905 | gl->tot_len - pktshift); |
| 906 | return skb; |
| 907 | } |
| 908 | |
| 909 | static inline int recv_rx_pkt(struct c4iw_dev *dev, const struct pkt_gl *gl, |
| 910 | const __be64 *rsp) |
| 911 | { |
| 912 | unsigned int opcode = *(u8 *)rsp; |
| 913 | struct sk_buff *skb; |
| 914 | |
| 915 | if (opcode != CPL_RX_PKT) |
| 916 | goto out; |
| 917 | |
| 918 | skb = copy_gl_to_skb_pkt(gl , rsp, dev->rdev.lldi.sge_pktshift); |
| 919 | if (skb == NULL) |
| 920 | goto out; |
| 921 | |
| 922 | if (c4iw_handlers[opcode] == NULL) { |
| 923 | pr_info("%s no handler opcode 0x%x...\n", __func__, |
| 924 | opcode); |
| 925 | kfree_skb(skb); |
| 926 | goto out; |
| 927 | } |
| 928 | c4iw_handlers[opcode](dev, skb); |
| 929 | return 1; |
| 930 | out: |
| 931 | return 0; |
| 932 | } |
| 933 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 934 | static int c4iw_uld_rx_handler(void *handle, const __be64 *rsp, |
| 935 | const struct pkt_gl *gl) |
| 936 | { |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 937 | struct uld_ctx *ctx = handle; |
| 938 | struct c4iw_dev *dev = ctx->dev; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 939 | struct sk_buff *skb; |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 940 | u8 opcode; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 941 | |
| 942 | if (gl == NULL) { |
| 943 | /* omit RSS and rsp_ctrl at end of descriptor */ |
| 944 | unsigned int len = 64 - sizeof(struct rsp_ctrl) - 8; |
| 945 | |
| 946 | skb = alloc_skb(256, GFP_ATOMIC); |
| 947 | if (!skb) |
| 948 | goto nomem; |
| 949 | __skb_put(skb, len); |
| 950 | skb_copy_to_linear_data(skb, &rsp[1], len); |
| 951 | } else if (gl == CXGB4_MSG_AN) { |
| 952 | const struct rsp_ctrl *rc = (void *)rsp; |
| 953 | |
| 954 | u32 qid = be32_to_cpu(rc->pldbuflen_qid); |
| 955 | c4iw_ev_handler(dev, qid); |
| 956 | return 0; |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 957 | } else if (unlikely(*(u8 *)rsp != *(u8 *)gl->va)) { |
| 958 | if (recv_rx_pkt(dev, gl, rsp)) |
| 959 | return 0; |
| 960 | |
| 961 | pr_info("%s: unexpected FL contents at %p, " \ |
| 962 | "RSS %#llx, FL %#llx, len %u\n", |
| 963 | pci_name(ctx->lldi.pdev), gl->va, |
| 964 | (unsigned long long)be64_to_cpu(*rsp), |
Vipul Pandya | ef5d635 | 2013-01-07 13:12:00 +0000 | [diff] [blame] | 965 | (unsigned long long)be64_to_cpu( |
| 966 | *(__force __be64 *)gl->va), |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 967 | gl->tot_len); |
| 968 | |
| 969 | return 0; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 970 | } else { |
Steve Wise | da411ba | 2010-10-18 15:16:45 +0000 | [diff] [blame] | 971 | skb = cxgb4_pktgl_to_skb(gl, 128, 128); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 972 | if (unlikely(!skb)) |
| 973 | goto nomem; |
| 974 | } |
| 975 | |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 976 | opcode = *(u8 *)rsp; |
Steve Wise | dbb084c | 2014-03-21 20:40:30 +0530 | [diff] [blame] | 977 | if (c4iw_handlers[opcode]) { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 978 | c4iw_handlers[opcode](dev, skb); |
Steve Wise | dbb084c | 2014-03-21 20:40:30 +0530 | [diff] [blame] | 979 | } else { |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 980 | pr_info("%s no handler opcode 0x%x...\n", __func__, |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 981 | opcode); |
Steve Wise | dbb084c | 2014-03-21 20:40:30 +0530 | [diff] [blame] | 982 | kfree_skb(skb); |
| 983 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 984 | |
| 985 | return 0; |
| 986 | nomem: |
| 987 | return -1; |
| 988 | } |
| 989 | |
| 990 | static int c4iw_uld_state_change(void *handle, enum cxgb4_state new_state) |
| 991 | { |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 992 | struct uld_ctx *ctx = handle; |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 993 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 994 | PDBG("%s new_state %u\n", __func__, new_state); |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 995 | switch (new_state) { |
| 996 | case CXGB4_STATE_UP: |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 997 | printk(KERN_INFO MOD "%s: Up\n", pci_name(ctx->lldi.pdev)); |
| 998 | if (!ctx->dev) { |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 999 | int ret; |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1000 | |
| 1001 | ctx->dev = c4iw_alloc(&ctx->lldi); |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 1002 | if (IS_ERR(ctx->dev)) { |
| 1003 | printk(KERN_ERR MOD |
| 1004 | "%s: initialization failed: %ld\n", |
| 1005 | pci_name(ctx->lldi.pdev), |
| 1006 | PTR_ERR(ctx->dev)); |
| 1007 | ctx->dev = NULL; |
| 1008 | break; |
| 1009 | } |
| 1010 | ret = c4iw_register_device(ctx->dev); |
| 1011 | if (ret) { |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 1012 | printk(KERN_ERR MOD |
| 1013 | "%s: RDMA registration failed: %d\n", |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1014 | pci_name(ctx->lldi.pdev), ret); |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 1015 | c4iw_dealloc(ctx); |
| 1016 | } |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 1017 | } |
| 1018 | break; |
| 1019 | case CXGB4_STATE_DOWN: |
| 1020 | printk(KERN_INFO MOD "%s: Down\n", |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1021 | pci_name(ctx->lldi.pdev)); |
| 1022 | if (ctx->dev) |
| 1023 | c4iw_remove(ctx); |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 1024 | break; |
| 1025 | case CXGB4_STATE_START_RECOVERY: |
| 1026 | printk(KERN_INFO MOD "%s: Fatal Error\n", |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1027 | pci_name(ctx->lldi.pdev)); |
| 1028 | if (ctx->dev) { |
Steve Wise | 767fbe8 | 2011-03-11 22:30:53 +0000 | [diff] [blame] | 1029 | struct ib_event event; |
| 1030 | |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1031 | ctx->dev->rdev.flags |= T4_FATAL_ERROR; |
Steve Wise | 767fbe8 | 2011-03-11 22:30:53 +0000 | [diff] [blame] | 1032 | memset(&event, 0, sizeof event); |
| 1033 | event.event = IB_EVENT_DEVICE_FATAL; |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1034 | event.device = &ctx->dev->ibdev; |
Steve Wise | 767fbe8 | 2011-03-11 22:30:53 +0000 | [diff] [blame] | 1035 | ib_dispatch_event(&event); |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1036 | c4iw_remove(ctx); |
Steve Wise | 767fbe8 | 2011-03-11 22:30:53 +0000 | [diff] [blame] | 1037 | } |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 1038 | break; |
| 1039 | case CXGB4_STATE_DETACH: |
| 1040 | printk(KERN_INFO MOD "%s: Detach\n", |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1041 | pci_name(ctx->lldi.pdev)); |
| 1042 | if (ctx->dev) |
| 1043 | c4iw_remove(ctx); |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 1044 | break; |
| 1045 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1046 | return 0; |
| 1047 | } |
| 1048 | |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1049 | static int disable_qp_db(int id, void *p, void *data) |
| 1050 | { |
| 1051 | struct c4iw_qp *qp = p; |
| 1052 | |
| 1053 | t4_disable_wq_db(&qp->wq); |
| 1054 | return 0; |
| 1055 | } |
| 1056 | |
| 1057 | static void stop_queues(struct uld_ctx *ctx) |
| 1058 | { |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1059 | unsigned long flags; |
| 1060 | |
| 1061 | spin_lock_irqsave(&ctx->dev->lock, flags); |
| 1062 | ctx->dev->rdev.stats.db_state_transitions++; |
| 1063 | ctx->dev->db_state = STOPPED; |
| 1064 | if (ctx->dev->rdev.flags & T4_STATUS_PAGE_DISABLED) |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1065 | idr_for_each(&ctx->dev->qpidr, disable_qp_db, NULL); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1066 | else |
| 1067 | ctx->dev->rdev.status_page->db_off = 1; |
| 1068 | spin_unlock_irqrestore(&ctx->dev->lock, flags); |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1069 | } |
| 1070 | |
| 1071 | static int enable_qp_db(int id, void *p, void *data) |
| 1072 | { |
| 1073 | struct c4iw_qp *qp = p; |
| 1074 | |
| 1075 | t4_enable_wq_db(&qp->wq); |
| 1076 | return 0; |
| 1077 | } |
| 1078 | |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1079 | static void resume_rc_qp(struct c4iw_qp *qp) |
| 1080 | { |
| 1081 | spin_lock(&qp->lock); |
Steve Wise | fa658a9 | 2014-04-09 09:38:25 -0500 | [diff] [blame] | 1082 | t4_ring_sq_db(&qp->wq, qp->wq.sq.wq_pidx_inc, |
| 1083 | is_t5(qp->rhp->rdev.lldi.adapter_type), NULL); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1084 | qp->wq.sq.wq_pidx_inc = 0; |
Steve Wise | fa658a9 | 2014-04-09 09:38:25 -0500 | [diff] [blame] | 1085 | t4_ring_rq_db(&qp->wq, qp->wq.rq.wq_pidx_inc, |
| 1086 | is_t5(qp->rhp->rdev.lldi.adapter_type), NULL); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1087 | qp->wq.rq.wq_pidx_inc = 0; |
| 1088 | spin_unlock(&qp->lock); |
| 1089 | } |
| 1090 | |
| 1091 | static void resume_a_chunk(struct uld_ctx *ctx) |
| 1092 | { |
| 1093 | int i; |
| 1094 | struct c4iw_qp *qp; |
| 1095 | |
| 1096 | for (i = 0; i < DB_FC_RESUME_SIZE; i++) { |
| 1097 | qp = list_first_entry(&ctx->dev->db_fc_list, struct c4iw_qp, |
| 1098 | db_fc_entry); |
| 1099 | list_del_init(&qp->db_fc_entry); |
| 1100 | resume_rc_qp(qp); |
| 1101 | if (list_empty(&ctx->dev->db_fc_list)) |
| 1102 | break; |
| 1103 | } |
| 1104 | } |
| 1105 | |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1106 | static void resume_queues(struct uld_ctx *ctx) |
| 1107 | { |
| 1108 | spin_lock_irq(&ctx->dev->lock); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1109 | if (ctx->dev->db_state != STOPPED) |
| 1110 | goto out; |
| 1111 | ctx->dev->db_state = FLOW_CONTROL; |
| 1112 | while (1) { |
| 1113 | if (list_empty(&ctx->dev->db_fc_list)) { |
| 1114 | WARN_ON(ctx->dev->db_state != FLOW_CONTROL); |
| 1115 | ctx->dev->db_state = NORMAL; |
| 1116 | ctx->dev->rdev.stats.db_state_transitions++; |
| 1117 | if (ctx->dev->rdev.flags & T4_STATUS_PAGE_DISABLED) { |
| 1118 | idr_for_each(&ctx->dev->qpidr, enable_qp_db, |
| 1119 | NULL); |
| 1120 | } else { |
| 1121 | ctx->dev->rdev.status_page->db_off = 0; |
| 1122 | } |
| 1123 | break; |
| 1124 | } else { |
| 1125 | if (cxgb4_dbfifo_count(ctx->dev->rdev.lldi.ports[0], 1) |
| 1126 | < (ctx->dev->rdev.lldi.dbfifo_int_thresh << |
| 1127 | DB_FC_DRAIN_THRESH)) { |
| 1128 | resume_a_chunk(ctx); |
| 1129 | } |
| 1130 | if (!list_empty(&ctx->dev->db_fc_list)) { |
| 1131 | spin_unlock_irq(&ctx->dev->lock); |
| 1132 | if (DB_FC_RESUME_DELAY) { |
| 1133 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 1134 | schedule_timeout(DB_FC_RESUME_DELAY); |
| 1135 | } |
| 1136 | spin_lock_irq(&ctx->dev->lock); |
| 1137 | if (ctx->dev->db_state != FLOW_CONTROL) |
| 1138 | break; |
| 1139 | } |
| 1140 | } |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1141 | } |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1142 | out: |
| 1143 | if (ctx->dev->db_state != NORMAL) |
| 1144 | ctx->dev->rdev.stats.db_fc_interruptions++; |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1145 | spin_unlock_irq(&ctx->dev->lock); |
| 1146 | } |
| 1147 | |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1148 | struct qp_list { |
| 1149 | unsigned idx; |
| 1150 | struct c4iw_qp **qps; |
| 1151 | }; |
| 1152 | |
| 1153 | static int add_and_ref_qp(int id, void *p, void *data) |
| 1154 | { |
| 1155 | struct qp_list *qp_listp = data; |
| 1156 | struct c4iw_qp *qp = p; |
| 1157 | |
| 1158 | c4iw_qp_add_ref(&qp->ibqp); |
| 1159 | qp_listp->qps[qp_listp->idx++] = qp; |
| 1160 | return 0; |
| 1161 | } |
| 1162 | |
| 1163 | static int count_qps(int id, void *p, void *data) |
| 1164 | { |
| 1165 | unsigned *countp = data; |
| 1166 | (*countp)++; |
| 1167 | return 0; |
| 1168 | } |
| 1169 | |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1170 | static void deref_qps(struct qp_list *qp_list) |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1171 | { |
| 1172 | int idx; |
| 1173 | |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1174 | for (idx = 0; idx < qp_list->idx; idx++) |
| 1175 | c4iw_qp_rem_ref(&qp_list->qps[idx]->ibqp); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1176 | } |
| 1177 | |
| 1178 | static void recover_lost_dbs(struct uld_ctx *ctx, struct qp_list *qp_list) |
| 1179 | { |
| 1180 | int idx; |
| 1181 | int ret; |
| 1182 | |
| 1183 | for (idx = 0; idx < qp_list->idx; idx++) { |
| 1184 | struct c4iw_qp *qp = qp_list->qps[idx]; |
| 1185 | |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1186 | spin_lock_irq(&qp->rhp->lock); |
| 1187 | spin_lock(&qp->lock); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1188 | ret = cxgb4_sync_txq_pidx(qp->rhp->rdev.lldi.ports[0], |
| 1189 | qp->wq.sq.qid, |
| 1190 | t4_sq_host_wq_pidx(&qp->wq), |
| 1191 | t4_sq_wq_size(&qp->wq)); |
| 1192 | if (ret) { |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1193 | pr_err(KERN_ERR MOD "%s: Fatal error - " |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1194 | "DB overflow recovery failed - " |
| 1195 | "error syncing SQ qid %u\n", |
| 1196 | pci_name(ctx->lldi.pdev), qp->wq.sq.qid); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1197 | spin_unlock(&qp->lock); |
| 1198 | spin_unlock_irq(&qp->rhp->lock); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1199 | return; |
| 1200 | } |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1201 | qp->wq.sq.wq_pidx_inc = 0; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1202 | |
| 1203 | ret = cxgb4_sync_txq_pidx(qp->rhp->rdev.lldi.ports[0], |
| 1204 | qp->wq.rq.qid, |
| 1205 | t4_rq_host_wq_pidx(&qp->wq), |
| 1206 | t4_rq_wq_size(&qp->wq)); |
| 1207 | |
| 1208 | if (ret) { |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1209 | pr_err(KERN_ERR MOD "%s: Fatal error - " |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1210 | "DB overflow recovery failed - " |
| 1211 | "error syncing RQ qid %u\n", |
| 1212 | pci_name(ctx->lldi.pdev), qp->wq.rq.qid); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1213 | spin_unlock(&qp->lock); |
| 1214 | spin_unlock_irq(&qp->rhp->lock); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1215 | return; |
| 1216 | } |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1217 | qp->wq.rq.wq_pidx_inc = 0; |
| 1218 | spin_unlock(&qp->lock); |
| 1219 | spin_unlock_irq(&qp->rhp->lock); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1220 | |
| 1221 | /* Wait for the dbfifo to drain */ |
| 1222 | while (cxgb4_dbfifo_count(qp->rhp->rdev.lldi.ports[0], 1) > 0) { |
| 1223 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 1224 | schedule_timeout(usecs_to_jiffies(10)); |
| 1225 | } |
| 1226 | } |
| 1227 | } |
| 1228 | |
| 1229 | static void recover_queues(struct uld_ctx *ctx) |
| 1230 | { |
| 1231 | int count = 0; |
| 1232 | struct qp_list qp_list; |
| 1233 | int ret; |
| 1234 | |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1235 | /* slow everybody down */ |
| 1236 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 1237 | schedule_timeout(usecs_to_jiffies(1000)); |
| 1238 | |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1239 | /* flush the SGE contexts */ |
| 1240 | ret = cxgb4_flush_eq_cache(ctx->dev->rdev.lldi.ports[0]); |
| 1241 | if (ret) { |
| 1242 | printk(KERN_ERR MOD "%s: Fatal error - DB overflow recovery failed\n", |
| 1243 | pci_name(ctx->lldi.pdev)); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1244 | return; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1245 | } |
| 1246 | |
| 1247 | /* Count active queues so we can build a list of queues to recover */ |
| 1248 | spin_lock_irq(&ctx->dev->lock); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1249 | WARN_ON(ctx->dev->db_state != STOPPED); |
| 1250 | ctx->dev->db_state = RECOVERY; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1251 | idr_for_each(&ctx->dev->qpidr, count_qps, &count); |
| 1252 | |
| 1253 | qp_list.qps = kzalloc(count * sizeof *qp_list.qps, GFP_ATOMIC); |
| 1254 | if (!qp_list.qps) { |
| 1255 | printk(KERN_ERR MOD "%s: Fatal error - DB overflow recovery failed\n", |
| 1256 | pci_name(ctx->lldi.pdev)); |
| 1257 | spin_unlock_irq(&ctx->dev->lock); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1258 | return; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1259 | } |
| 1260 | qp_list.idx = 0; |
| 1261 | |
| 1262 | /* add and ref each qp so it doesn't get freed */ |
| 1263 | idr_for_each(&ctx->dev->qpidr, add_and_ref_qp, &qp_list); |
| 1264 | |
| 1265 | spin_unlock_irq(&ctx->dev->lock); |
| 1266 | |
| 1267 | /* now traverse the list in a safe context to recover the db state*/ |
| 1268 | recover_lost_dbs(ctx, &qp_list); |
| 1269 | |
| 1270 | /* we're almost done! deref the qps and clean up */ |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1271 | deref_qps(&qp_list); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1272 | kfree(qp_list.qps); |
| 1273 | |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1274 | spin_lock_irq(&ctx->dev->lock); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1275 | WARN_ON(ctx->dev->db_state != RECOVERY); |
| 1276 | ctx->dev->db_state = STOPPED; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1277 | spin_unlock_irq(&ctx->dev->lock); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1278 | } |
| 1279 | |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1280 | static int c4iw_uld_control(void *handle, enum cxgb4_control control, ...) |
| 1281 | { |
| 1282 | struct uld_ctx *ctx = handle; |
| 1283 | |
| 1284 | switch (control) { |
| 1285 | case CXGB4_CONTROL_DB_FULL: |
| 1286 | stop_queues(ctx); |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1287 | ctx->dev->rdev.stats.db_full++; |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1288 | break; |
| 1289 | case CXGB4_CONTROL_DB_EMPTY: |
| 1290 | resume_queues(ctx); |
| 1291 | mutex_lock(&ctx->dev->rdev.stats.lock); |
| 1292 | ctx->dev->rdev.stats.db_empty++; |
| 1293 | mutex_unlock(&ctx->dev->rdev.stats.lock); |
| 1294 | break; |
| 1295 | case CXGB4_CONTROL_DB_DROP: |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1296 | recover_queues(ctx); |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1297 | mutex_lock(&ctx->dev->rdev.stats.lock); |
| 1298 | ctx->dev->rdev.stats.db_drop++; |
| 1299 | mutex_unlock(&ctx->dev->rdev.stats.lock); |
| 1300 | break; |
| 1301 | default: |
| 1302 | printk(KERN_WARNING MOD "%s: unknown control cmd %u\n", |
| 1303 | pci_name(ctx->lldi.pdev), control); |
| 1304 | break; |
| 1305 | } |
| 1306 | return 0; |
| 1307 | } |
| 1308 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1309 | static struct cxgb4_uld_info c4iw_uld_info = { |
| 1310 | .name = DRV_NAME, |
| 1311 | .add = c4iw_uld_add, |
| 1312 | .rx_handler = c4iw_uld_rx_handler, |
| 1313 | .state_change = c4iw_uld_state_change, |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1314 | .control = c4iw_uld_control, |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1315 | }; |
| 1316 | |
| 1317 | static int __init c4iw_init_module(void) |
| 1318 | { |
| 1319 | int err; |
| 1320 | |
| 1321 | err = c4iw_cm_init(); |
| 1322 | if (err) |
| 1323 | return err; |
| 1324 | |
| 1325 | c4iw_debugfs_root = debugfs_create_dir(DRV_NAME, NULL); |
| 1326 | if (!c4iw_debugfs_root) |
| 1327 | printk(KERN_WARNING MOD |
| 1328 | "could not create debugfs entry, continuing\n"); |
| 1329 | |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 1330 | if (ibnl_add_client(RDMA_NL_C4IW, RDMA_NL_IWPM_NUM_OPS, |
| 1331 | c4iw_nl_cb_table)) |
| 1332 | pr_err("%s[%u]: Failed to add netlink callback\n" |
| 1333 | , __func__, __LINE__); |
| 1334 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1335 | cxgb4_register_uld(CXGB4_ULD_RDMA, &c4iw_uld_info); |
| 1336 | |
| 1337 | return 0; |
| 1338 | } |
| 1339 | |
| 1340 | static void __exit c4iw_exit_module(void) |
| 1341 | { |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1342 | struct uld_ctx *ctx, *tmp; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1343 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1344 | mutex_lock(&dev_mutex); |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1345 | list_for_each_entry_safe(ctx, tmp, &uld_ctx_list, entry) { |
| 1346 | if (ctx->dev) |
| 1347 | c4iw_remove(ctx); |
| 1348 | kfree(ctx); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1349 | } |
| 1350 | mutex_unlock(&dev_mutex); |
Steve Wise | fd388ce | 2010-05-20 16:57:27 -0500 | [diff] [blame] | 1351 | cxgb4_unregister_uld(CXGB4_ULD_RDMA); |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 1352 | ibnl_remove_client(RDMA_NL_C4IW); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1353 | c4iw_cm_term(); |
| 1354 | debugfs_remove_recursive(c4iw_debugfs_root); |
| 1355 | } |
| 1356 | |
| 1357 | module_init(c4iw_init_module); |
| 1358 | module_exit(c4iw_exit_module); |