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> |
Hariprasad Shenai | da38897 | 2014-07-17 22:31:03 +0530 | [diff] [blame] | 36 | #include <linux/math64.h> |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 37 | |
| 38 | #include <rdma/ib_verbs.h> |
| 39 | |
| 40 | #include "iw_cxgb4.h" |
| 41 | |
| 42 | #define DRV_VERSION "0.1" |
| 43 | |
| 44 | MODULE_AUTHOR("Steve Wise"); |
Vipul Pandya | f079af7 | 2013-03-14 05:08:58 +0000 | [diff] [blame] | 45 | MODULE_DESCRIPTION("Chelsio T4/T5 RDMA Driver"); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 46 | MODULE_LICENSE("Dual BSD/GPL"); |
| 47 | MODULE_VERSION(DRV_VERSION); |
| 48 | |
Vipul Pandya | 80ccdd6 | 2013-03-14 05:09:00 +0000 | [diff] [blame] | 49 | static int allow_db_fc_on_t5; |
| 50 | module_param(allow_db_fc_on_t5, int, 0644); |
| 51 | MODULE_PARM_DESC(allow_db_fc_on_t5, |
| 52 | "Allow DB Flow Control on T5 (default = 0)"); |
| 53 | |
| 54 | static int allow_db_coalescing_on_t5; |
| 55 | module_param(allow_db_coalescing_on_t5, int, 0644); |
| 56 | MODULE_PARM_DESC(allow_db_coalescing_on_t5, |
| 57 | "Allow DB Coalescing on T5 (default = 0)"); |
| 58 | |
Hariprasad Shenai | 7730b4c | 2014-07-14 21:34:54 +0530 | [diff] [blame] | 59 | int c4iw_wr_log = 0; |
| 60 | module_param(c4iw_wr_log, int, 0444); |
| 61 | MODULE_PARM_DESC(c4iw_wr_log, "Enables logging of work request timing data."); |
| 62 | |
Steve Wise | 65d4c01 | 2014-08-29 11:19:29 -0500 | [diff] [blame] | 63 | static int c4iw_wr_log_size_order = 12; |
Hariprasad Shenai | 7730b4c | 2014-07-14 21:34:54 +0530 | [diff] [blame] | 64 | module_param(c4iw_wr_log_size_order, int, 0444); |
| 65 | MODULE_PARM_DESC(c4iw_wr_log_size_order, |
| 66 | "Number of entries (log2) in the work request timing log."); |
| 67 | |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 68 | struct uld_ctx { |
| 69 | struct list_head entry; |
| 70 | struct cxgb4_lld_info lldi; |
| 71 | struct c4iw_dev *dev; |
| 72 | }; |
| 73 | |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 74 | static LIST_HEAD(uld_ctx_list); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 75 | static DEFINE_MUTEX(dev_mutex); |
| 76 | |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 77 | #define DB_FC_RESUME_SIZE 64 |
| 78 | #define DB_FC_RESUME_DELAY 1 |
| 79 | #define DB_FC_DRAIN_THRESH 0 |
| 80 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 81 | static struct dentry *c4iw_debugfs_root; |
| 82 | |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 83 | struct c4iw_debugfs_data { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 84 | struct c4iw_dev *devp; |
| 85 | char *buf; |
| 86 | int bufsize; |
| 87 | int pos; |
| 88 | }; |
| 89 | |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 90 | /* registered cxgb4 netlink callbacks */ |
| 91 | static struct ibnl_client_cbs c4iw_nl_cb_table[] = { |
| 92 | [RDMA_NL_IWPM_REG_PID] = {.dump = iwpm_register_pid_cb}, |
| 93 | [RDMA_NL_IWPM_ADD_MAPPING] = {.dump = iwpm_add_mapping_cb}, |
| 94 | [RDMA_NL_IWPM_QUERY_MAPPING] = {.dump = iwpm_add_and_query_mapping_cb}, |
| 95 | [RDMA_NL_IWPM_HANDLE_ERR] = {.dump = iwpm_mapping_error_cb}, |
Steve Wise | 5b6b8fe | 2015-04-21 16:28:41 -0400 | [diff] [blame] | 96 | [RDMA_NL_IWPM_REMOTE_INFO] = {.dump = iwpm_remote_info_cb}, |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 97 | [RDMA_NL_IWPM_MAPINFO] = {.dump = iwpm_mapping_info_cb}, |
| 98 | [RDMA_NL_IWPM_MAPINFO_NUM] = {.dump = iwpm_ack_mapping_info_cb} |
| 99 | }; |
| 100 | |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 101 | static int count_idrs(int id, void *p, void *data) |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 102 | { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 103 | int *countp = data; |
| 104 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 105 | *countp = *countp + 1; |
| 106 | return 0; |
| 107 | } |
| 108 | |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 109 | static ssize_t debugfs_read(struct file *file, char __user *buf, size_t count, |
| 110 | loff_t *ppos) |
| 111 | { |
| 112 | struct c4iw_debugfs_data *d = file->private_data; |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 113 | |
Steve Wise | 3160977 | 2010-09-29 18:21:33 +0000 | [diff] [blame] | 114 | return simple_read_from_buffer(buf, count, ppos, d->buf, d->pos); |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 115 | } |
| 116 | |
Hariprasad Shenai | 7730b4c | 2014-07-14 21:34:54 +0530 | [diff] [blame] | 117 | void c4iw_log_wr_stats(struct t4_wq *wq, struct t4_cqe *cqe) |
| 118 | { |
| 119 | struct wr_log_entry le; |
| 120 | int idx; |
| 121 | |
| 122 | if (!wq->rdev->wr_log) |
| 123 | return; |
| 124 | |
| 125 | idx = (atomic_inc_return(&wq->rdev->wr_log_idx) - 1) & |
| 126 | (wq->rdev->wr_log_size - 1); |
| 127 | le.poll_sge_ts = cxgb4_read_sge_timestamp(wq->rdev->lldi.ports[0]); |
| 128 | getnstimeofday(&le.poll_host_ts); |
| 129 | le.valid = 1; |
| 130 | le.cqe_sge_ts = CQE_TS(cqe); |
| 131 | if (SQ_TYPE(cqe)) { |
| 132 | le.qid = wq->sq.qid; |
| 133 | le.opcode = CQE_OPCODE(cqe); |
| 134 | le.post_host_ts = wq->sq.sw_sq[wq->sq.cidx].host_ts; |
| 135 | le.post_sge_ts = wq->sq.sw_sq[wq->sq.cidx].sge_ts; |
| 136 | le.wr_id = CQE_WRID_SQ_IDX(cqe); |
| 137 | } else { |
| 138 | le.qid = wq->rq.qid; |
| 139 | le.opcode = FW_RI_RECEIVE; |
| 140 | le.post_host_ts = wq->rq.sw_rq[wq->rq.cidx].host_ts; |
| 141 | le.post_sge_ts = wq->rq.sw_rq[wq->rq.cidx].sge_ts; |
| 142 | le.wr_id = CQE_WRID_MSN(cqe); |
| 143 | } |
| 144 | wq->rdev->wr_log[idx] = le; |
| 145 | } |
| 146 | |
| 147 | static int wr_log_show(struct seq_file *seq, void *v) |
| 148 | { |
| 149 | struct c4iw_dev *dev = seq->private; |
| 150 | struct timespec prev_ts = {0, 0}; |
| 151 | struct wr_log_entry *lep; |
| 152 | int prev_ts_set = 0; |
| 153 | int idx, end; |
| 154 | |
Hariprasad S | 6198dd8 | 2015-04-22 01:44:59 +0530 | [diff] [blame] | 155 | #define ts2ns(ts) div64_u64((ts) * dev->rdev.lldi.cclk_ps, 1000) |
Hariprasad Shenai | 7730b4c | 2014-07-14 21:34:54 +0530 | [diff] [blame] | 156 | |
| 157 | idx = atomic_read(&dev->rdev.wr_log_idx) & |
| 158 | (dev->rdev.wr_log_size - 1); |
| 159 | end = idx - 1; |
| 160 | if (end < 0) |
| 161 | end = dev->rdev.wr_log_size - 1; |
| 162 | lep = &dev->rdev.wr_log[idx]; |
| 163 | while (idx != end) { |
| 164 | if (lep->valid) { |
| 165 | if (!prev_ts_set) { |
| 166 | prev_ts_set = 1; |
| 167 | prev_ts = lep->poll_host_ts; |
| 168 | } |
| 169 | seq_printf(seq, "%04u: sec %lu nsec %lu qid %u opcode " |
| 170 | "%u %s 0x%x host_wr_delta sec %lu nsec %lu " |
| 171 | "post_sge_ts 0x%llx cqe_sge_ts 0x%llx " |
| 172 | "poll_sge_ts 0x%llx post_poll_delta_ns %llu " |
| 173 | "cqe_poll_delta_ns %llu\n", |
| 174 | idx, |
| 175 | timespec_sub(lep->poll_host_ts, |
| 176 | prev_ts).tv_sec, |
| 177 | timespec_sub(lep->poll_host_ts, |
| 178 | prev_ts).tv_nsec, |
| 179 | lep->qid, lep->opcode, |
| 180 | lep->opcode == FW_RI_RECEIVE ? |
| 181 | "msn" : "wrid", |
| 182 | lep->wr_id, |
| 183 | timespec_sub(lep->poll_host_ts, |
| 184 | lep->post_host_ts).tv_sec, |
| 185 | timespec_sub(lep->poll_host_ts, |
| 186 | lep->post_host_ts).tv_nsec, |
| 187 | lep->post_sge_ts, lep->cqe_sge_ts, |
| 188 | lep->poll_sge_ts, |
| 189 | ts2ns(lep->poll_sge_ts - lep->post_sge_ts), |
| 190 | ts2ns(lep->poll_sge_ts - lep->cqe_sge_ts)); |
| 191 | prev_ts = lep->poll_host_ts; |
| 192 | } |
| 193 | idx++; |
| 194 | if (idx > (dev->rdev.wr_log_size - 1)) |
| 195 | idx = 0; |
| 196 | lep = &dev->rdev.wr_log[idx]; |
| 197 | } |
| 198 | #undef ts2ns |
| 199 | return 0; |
| 200 | } |
| 201 | |
| 202 | static int wr_log_open(struct inode *inode, struct file *file) |
| 203 | { |
| 204 | return single_open(file, wr_log_show, inode->i_private); |
| 205 | } |
| 206 | |
| 207 | static ssize_t wr_log_clear(struct file *file, const char __user *buf, |
| 208 | size_t count, loff_t *pos) |
| 209 | { |
| 210 | struct c4iw_dev *dev = ((struct seq_file *)file->private_data)->private; |
| 211 | int i; |
| 212 | |
| 213 | if (dev->rdev.wr_log) |
| 214 | for (i = 0; i < dev->rdev.wr_log_size; i++) |
| 215 | dev->rdev.wr_log[i].valid = 0; |
| 216 | return count; |
| 217 | } |
| 218 | |
| 219 | static const struct file_operations wr_log_debugfs_fops = { |
| 220 | .owner = THIS_MODULE, |
| 221 | .open = wr_log_open, |
| 222 | .release = single_release, |
| 223 | .read = seq_read, |
| 224 | .llseek = seq_lseek, |
| 225 | .write = wr_log_clear, |
| 226 | }; |
| 227 | |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 228 | static int dump_qp(int id, void *p, void *data) |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 229 | { |
| 230 | struct c4iw_qp *qp = p; |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 231 | struct c4iw_debugfs_data *qpd = data; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 232 | int space; |
| 233 | int cc; |
| 234 | |
| 235 | if (id != qp->wq.sq.qid) |
| 236 | return 0; |
| 237 | |
| 238 | space = qpd->bufsize - qpd->pos - 1; |
| 239 | if (space == 0) |
| 240 | return 1; |
| 241 | |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 242 | if (qp->ep) { |
| 243 | if (qp->ep->com.local_addr.ss_family == AF_INET) { |
| 244 | struct sockaddr_in *lsin = (struct sockaddr_in *) |
| 245 | &qp->ep->com.local_addr; |
| 246 | struct sockaddr_in *rsin = (struct sockaddr_in *) |
| 247 | &qp->ep->com.remote_addr; |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 248 | struct sockaddr_in *mapped_lsin = (struct sockaddr_in *) |
| 249 | &qp->ep->com.mapped_local_addr; |
| 250 | struct sockaddr_in *mapped_rsin = (struct sockaddr_in *) |
| 251 | &qp->ep->com.mapped_remote_addr; |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 252 | |
| 253 | cc = snprintf(qpd->buf + qpd->pos, space, |
| 254 | "rc qp sq id %u rq id %u state %u " |
| 255 | "onchip %u ep tid %u state %u " |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 256 | "%pI4:%u/%u->%pI4:%u/%u\n", |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 257 | qp->wq.sq.qid, qp->wq.rq.qid, |
| 258 | (int)qp->attr.state, |
| 259 | qp->wq.sq.flags & T4_SQ_ONCHIP, |
| 260 | qp->ep->hwtid, (int)qp->ep->com.state, |
| 261 | &lsin->sin_addr, ntohs(lsin->sin_port), |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 262 | ntohs(mapped_lsin->sin_port), |
| 263 | &rsin->sin_addr, ntohs(rsin->sin_port), |
| 264 | ntohs(mapped_rsin->sin_port)); |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 265 | } else { |
| 266 | struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *) |
| 267 | &qp->ep->com.local_addr; |
| 268 | struct sockaddr_in6 *rsin6 = (struct sockaddr_in6 *) |
| 269 | &qp->ep->com.remote_addr; |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 270 | struct sockaddr_in6 *mapped_lsin6 = |
| 271 | (struct sockaddr_in6 *) |
| 272 | &qp->ep->com.mapped_local_addr; |
| 273 | struct sockaddr_in6 *mapped_rsin6 = |
| 274 | (struct sockaddr_in6 *) |
| 275 | &qp->ep->com.mapped_remote_addr; |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 276 | |
| 277 | cc = snprintf(qpd->buf + qpd->pos, space, |
| 278 | "rc qp sq id %u rq id %u state %u " |
| 279 | "onchip %u ep tid %u state %u " |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 280 | "%pI6:%u/%u->%pI6:%u/%u\n", |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 281 | qp->wq.sq.qid, qp->wq.rq.qid, |
| 282 | (int)qp->attr.state, |
| 283 | qp->wq.sq.flags & T4_SQ_ONCHIP, |
| 284 | qp->ep->hwtid, (int)qp->ep->com.state, |
| 285 | &lsin6->sin6_addr, |
| 286 | ntohs(lsin6->sin6_port), |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 287 | ntohs(mapped_lsin6->sin6_port), |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 288 | &rsin6->sin6_addr, |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 289 | ntohs(rsin6->sin6_port), |
| 290 | ntohs(mapped_rsin6->sin6_port)); |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 291 | } |
| 292 | } else |
Steve Wise | db5d040 | 2011-03-11 22:29:50 +0000 | [diff] [blame] | 293 | cc = snprintf(qpd->buf + qpd->pos, space, |
| 294 | "qp sq id %u rq id %u state %u onchip %u\n", |
| 295 | qp->wq.sq.qid, qp->wq.rq.qid, |
| 296 | (int)qp->attr.state, |
| 297 | qp->wq.sq.flags & T4_SQ_ONCHIP); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 298 | if (cc < space) |
| 299 | qpd->pos += cc; |
| 300 | return 0; |
| 301 | } |
| 302 | |
| 303 | static int qp_release(struct inode *inode, struct file *file) |
| 304 | { |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 305 | struct c4iw_debugfs_data *qpd = file->private_data; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 306 | if (!qpd) { |
| 307 | printk(KERN_INFO "%s null qpd?\n", __func__); |
| 308 | return 0; |
| 309 | } |
Vipul Pandya | d716a2a | 2012-05-18 15:29:31 +0530 | [diff] [blame] | 310 | vfree(qpd->buf); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 311 | kfree(qpd); |
| 312 | return 0; |
| 313 | } |
| 314 | |
| 315 | static int qp_open(struct inode *inode, struct file *file) |
| 316 | { |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 317 | struct c4iw_debugfs_data *qpd; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 318 | int ret = 0; |
| 319 | int count = 1; |
| 320 | |
| 321 | qpd = kmalloc(sizeof *qpd, GFP_KERNEL); |
| 322 | if (!qpd) { |
| 323 | ret = -ENOMEM; |
| 324 | goto out; |
| 325 | } |
| 326 | qpd->devp = inode->i_private; |
| 327 | qpd->pos = 0; |
| 328 | |
| 329 | spin_lock_irq(&qpd->devp->lock); |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 330 | idr_for_each(&qpd->devp->qpidr, count_idrs, &count); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 331 | spin_unlock_irq(&qpd->devp->lock); |
| 332 | |
| 333 | qpd->bufsize = count * 128; |
Vipul Pandya | d716a2a | 2012-05-18 15:29:31 +0530 | [diff] [blame] | 334 | qpd->buf = vmalloc(qpd->bufsize); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 335 | if (!qpd->buf) { |
| 336 | ret = -ENOMEM; |
| 337 | goto err1; |
| 338 | } |
| 339 | |
| 340 | spin_lock_irq(&qpd->devp->lock); |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 341 | idr_for_each(&qpd->devp->qpidr, dump_qp, qpd); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 342 | spin_unlock_irq(&qpd->devp->lock); |
| 343 | |
| 344 | qpd->buf[qpd->pos++] = 0; |
| 345 | file->private_data = qpd; |
| 346 | goto out; |
| 347 | err1: |
| 348 | kfree(qpd); |
| 349 | out: |
| 350 | return ret; |
| 351 | } |
| 352 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 353 | static const struct file_operations qp_debugfs_fops = { |
| 354 | .owner = THIS_MODULE, |
| 355 | .open = qp_open, |
| 356 | .release = qp_release, |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 357 | .read = debugfs_read, |
Steve Wise | 8bbac89 | 2010-09-29 14:11:12 +0000 | [diff] [blame] | 358 | .llseek = default_llseek, |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 359 | }; |
| 360 | |
| 361 | static int dump_stag(int id, void *p, void *data) |
| 362 | { |
| 363 | struct c4iw_debugfs_data *stagd = data; |
| 364 | int space; |
| 365 | int cc; |
Hariprasad Shenai | 031cf47 | 2014-07-14 21:34:53 +0530 | [diff] [blame] | 366 | struct fw_ri_tpte tpte; |
| 367 | int ret; |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 368 | |
| 369 | space = stagd->bufsize - stagd->pos - 1; |
| 370 | if (space == 0) |
| 371 | return 1; |
| 372 | |
Hariprasad Shenai | 031cf47 | 2014-07-14 21:34:53 +0530 | [diff] [blame] | 373 | ret = cxgb4_read_tpte(stagd->devp->rdev.lldi.ports[0], (u32)id<<8, |
| 374 | (__be32 *)&tpte); |
| 375 | if (ret) { |
| 376 | dev_err(&stagd->devp->rdev.lldi.pdev->dev, |
| 377 | "%s cxgb4_read_tpte err %d\n", __func__, ret); |
| 378 | return ret; |
| 379 | } |
| 380 | cc = snprintf(stagd->buf + stagd->pos, space, |
| 381 | "stag: idx 0x%x valid %d key 0x%x state %d pdid %d " |
| 382 | "perm 0x%x ps %d len 0x%llx va 0x%llx\n", |
| 383 | (u32)id<<8, |
Hariprasad Shenai | cf7fe64 | 2015-01-16 09:24:48 +0530 | [diff] [blame] | 384 | FW_RI_TPTE_VALID_G(ntohl(tpte.valid_to_pdid)), |
| 385 | FW_RI_TPTE_STAGKEY_G(ntohl(tpte.valid_to_pdid)), |
| 386 | FW_RI_TPTE_STAGSTATE_G(ntohl(tpte.valid_to_pdid)), |
| 387 | FW_RI_TPTE_PDID_G(ntohl(tpte.valid_to_pdid)), |
| 388 | FW_RI_TPTE_PERM_G(ntohl(tpte.locread_to_qpid)), |
| 389 | FW_RI_TPTE_PS_G(ntohl(tpte.locread_to_qpid)), |
Hariprasad Shenai | 031cf47 | 2014-07-14 21:34:53 +0530 | [diff] [blame] | 390 | ((u64)ntohl(tpte.len_hi) << 32) | ntohl(tpte.len_lo), |
| 391 | ((u64)ntohl(tpte.va_hi) << 32) | ntohl(tpte.va_lo_fbo)); |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 392 | if (cc < space) |
| 393 | stagd->pos += cc; |
| 394 | return 0; |
| 395 | } |
| 396 | |
| 397 | static int stag_release(struct inode *inode, struct file *file) |
| 398 | { |
| 399 | struct c4iw_debugfs_data *stagd = file->private_data; |
| 400 | if (!stagd) { |
| 401 | printk(KERN_INFO "%s null stagd?\n", __func__); |
| 402 | return 0; |
| 403 | } |
Hariprasad Shenai | 031cf47 | 2014-07-14 21:34:53 +0530 | [diff] [blame] | 404 | vfree(stagd->buf); |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 405 | kfree(stagd); |
| 406 | return 0; |
| 407 | } |
| 408 | |
| 409 | static int stag_open(struct inode *inode, struct file *file) |
| 410 | { |
| 411 | struct c4iw_debugfs_data *stagd; |
| 412 | int ret = 0; |
| 413 | int count = 1; |
| 414 | |
| 415 | stagd = kmalloc(sizeof *stagd, GFP_KERNEL); |
| 416 | if (!stagd) { |
| 417 | ret = -ENOMEM; |
| 418 | goto out; |
| 419 | } |
| 420 | stagd->devp = inode->i_private; |
| 421 | stagd->pos = 0; |
| 422 | |
| 423 | spin_lock_irq(&stagd->devp->lock); |
| 424 | idr_for_each(&stagd->devp->mmidr, count_idrs, &count); |
| 425 | spin_unlock_irq(&stagd->devp->lock); |
| 426 | |
Hariprasad Shenai | 031cf47 | 2014-07-14 21:34:53 +0530 | [diff] [blame] | 427 | stagd->bufsize = count * 256; |
| 428 | stagd->buf = vmalloc(stagd->bufsize); |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 429 | if (!stagd->buf) { |
| 430 | ret = -ENOMEM; |
| 431 | goto err1; |
| 432 | } |
| 433 | |
| 434 | spin_lock_irq(&stagd->devp->lock); |
| 435 | idr_for_each(&stagd->devp->mmidr, dump_stag, stagd); |
| 436 | spin_unlock_irq(&stagd->devp->lock); |
| 437 | |
| 438 | stagd->buf[stagd->pos++] = 0; |
| 439 | file->private_data = stagd; |
| 440 | goto out; |
| 441 | err1: |
| 442 | kfree(stagd); |
| 443 | out: |
| 444 | return ret; |
| 445 | } |
| 446 | |
| 447 | static const struct file_operations stag_debugfs_fops = { |
| 448 | .owner = THIS_MODULE, |
| 449 | .open = stag_open, |
| 450 | .release = stag_release, |
| 451 | .read = debugfs_read, |
Steve Wise | 8bbac89 | 2010-09-29 14:11:12 +0000 | [diff] [blame] | 452 | .llseek = default_llseek, |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 453 | }; |
| 454 | |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 455 | static char *db_state_str[] = {"NORMAL", "FLOW_CONTROL", "RECOVERY", "STOPPED"}; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 456 | |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 457 | static int stats_show(struct seq_file *seq, void *v) |
| 458 | { |
| 459 | struct c4iw_dev *dev = seq->private; |
| 460 | |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 461 | seq_printf(seq, " Object: %10s %10s %10s %10s\n", "Total", "Current", |
| 462 | "Max", "Fail"); |
| 463 | seq_printf(seq, " PDID: %10llu %10llu %10llu %10llu\n", |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 464 | dev->rdev.stats.pd.total, dev->rdev.stats.pd.cur, |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 465 | dev->rdev.stats.pd.max, dev->rdev.stats.pd.fail); |
| 466 | seq_printf(seq, " QID: %10llu %10llu %10llu %10llu\n", |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 467 | dev->rdev.stats.qid.total, dev->rdev.stats.qid.cur, |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 468 | dev->rdev.stats.qid.max, dev->rdev.stats.qid.fail); |
| 469 | seq_printf(seq, " TPTMEM: %10llu %10llu %10llu %10llu\n", |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 470 | dev->rdev.stats.stag.total, dev->rdev.stats.stag.cur, |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 471 | dev->rdev.stats.stag.max, dev->rdev.stats.stag.fail); |
| 472 | seq_printf(seq, " PBLMEM: %10llu %10llu %10llu %10llu\n", |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 473 | dev->rdev.stats.pbl.total, dev->rdev.stats.pbl.cur, |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 474 | dev->rdev.stats.pbl.max, dev->rdev.stats.pbl.fail); |
| 475 | seq_printf(seq, " RQTMEM: %10llu %10llu %10llu %10llu\n", |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 476 | dev->rdev.stats.rqt.total, dev->rdev.stats.rqt.cur, |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 477 | dev->rdev.stats.rqt.max, dev->rdev.stats.rqt.fail); |
| 478 | seq_printf(seq, " OCQPMEM: %10llu %10llu %10llu %10llu\n", |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 479 | dev->rdev.stats.ocqp.total, dev->rdev.stats.ocqp.cur, |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 480 | dev->rdev.stats.ocqp.max, dev->rdev.stats.ocqp.fail); |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 481 | seq_printf(seq, " DB FULL: %10llu\n", dev->rdev.stats.db_full); |
| 482 | seq_printf(seq, " DB EMPTY: %10llu\n", dev->rdev.stats.db_empty); |
| 483 | seq_printf(seq, " DB DROP: %10llu\n", dev->rdev.stats.db_drop); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 484 | seq_printf(seq, " DB State: %s Transitions %llu FC Interruptions %llu\n", |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 485 | db_state_str[dev->db_state], |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 486 | dev->rdev.stats.db_state_transitions, |
| 487 | dev->rdev.stats.db_fc_interruptions); |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 488 | seq_printf(seq, "TCAM_FULL: %10llu\n", dev->rdev.stats.tcam_full); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 489 | seq_printf(seq, "ACT_OFLD_CONN_FAILS: %10llu\n", |
| 490 | dev->rdev.stats.act_ofld_conn_fails); |
| 491 | seq_printf(seq, "PAS_OFLD_CONN_FAILS: %10llu\n", |
| 492 | dev->rdev.stats.pas_ofld_conn_fails); |
Hariprasad S | 179d03b | 2015-05-05 03:55:24 +0530 | [diff] [blame] | 493 | seq_printf(seq, "NEG_ADV_RCVD: %10llu\n", dev->rdev.stats.neg_adv); |
Hariprasad Shenai | 4c2c576 | 2014-07-14 21:34:52 +0530 | [diff] [blame] | 494 | seq_printf(seq, "AVAILABLE IRD: %10u\n", dev->avail_ird); |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 495 | return 0; |
| 496 | } |
| 497 | |
| 498 | static int stats_open(struct inode *inode, struct file *file) |
| 499 | { |
| 500 | return single_open(file, stats_show, inode->i_private); |
| 501 | } |
| 502 | |
| 503 | static ssize_t stats_clear(struct file *file, const char __user *buf, |
| 504 | size_t count, loff_t *pos) |
| 505 | { |
| 506 | struct c4iw_dev *dev = ((struct seq_file *)file->private_data)->private; |
| 507 | |
| 508 | mutex_lock(&dev->rdev.stats.lock); |
| 509 | dev->rdev.stats.pd.max = 0; |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 510 | dev->rdev.stats.pd.fail = 0; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 511 | dev->rdev.stats.qid.max = 0; |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 512 | dev->rdev.stats.qid.fail = 0; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 513 | dev->rdev.stats.stag.max = 0; |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 514 | dev->rdev.stats.stag.fail = 0; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 515 | dev->rdev.stats.pbl.max = 0; |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 516 | dev->rdev.stats.pbl.fail = 0; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 517 | dev->rdev.stats.rqt.max = 0; |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 518 | dev->rdev.stats.rqt.fail = 0; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 519 | dev->rdev.stats.ocqp.max = 0; |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 520 | dev->rdev.stats.ocqp.fail = 0; |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 521 | dev->rdev.stats.db_full = 0; |
| 522 | dev->rdev.stats.db_empty = 0; |
| 523 | dev->rdev.stats.db_drop = 0; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 524 | dev->rdev.stats.db_state_transitions = 0; |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 525 | dev->rdev.stats.tcam_full = 0; |
| 526 | dev->rdev.stats.act_ofld_conn_fails = 0; |
| 527 | dev->rdev.stats.pas_ofld_conn_fails = 0; |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 528 | mutex_unlock(&dev->rdev.stats.lock); |
| 529 | return count; |
| 530 | } |
| 531 | |
| 532 | static const struct file_operations stats_debugfs_fops = { |
| 533 | .owner = THIS_MODULE, |
| 534 | .open = stats_open, |
| 535 | .release = single_release, |
| 536 | .read = seq_read, |
| 537 | .llseek = seq_lseek, |
| 538 | .write = stats_clear, |
| 539 | }; |
| 540 | |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 541 | static int dump_ep(int id, void *p, void *data) |
| 542 | { |
| 543 | struct c4iw_ep *ep = p; |
| 544 | struct c4iw_debugfs_data *epd = data; |
| 545 | int space; |
| 546 | int cc; |
| 547 | |
| 548 | space = epd->bufsize - epd->pos - 1; |
| 549 | if (space == 0) |
| 550 | return 1; |
| 551 | |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 552 | if (ep->com.local_addr.ss_family == AF_INET) { |
| 553 | struct sockaddr_in *lsin = (struct sockaddr_in *) |
| 554 | &ep->com.local_addr; |
| 555 | struct sockaddr_in *rsin = (struct sockaddr_in *) |
| 556 | &ep->com.remote_addr; |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 557 | struct sockaddr_in *mapped_lsin = (struct sockaddr_in *) |
| 558 | &ep->com.mapped_local_addr; |
| 559 | struct sockaddr_in *mapped_rsin = (struct sockaddr_in *) |
| 560 | &ep->com.mapped_remote_addr; |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 561 | |
| 562 | cc = snprintf(epd->buf + epd->pos, space, |
| 563 | "ep %p cm_id %p qp %p state %d flags 0x%lx " |
| 564 | "history 0x%lx hwtid %d atid %d " |
Hariprasad S | 179d03b | 2015-05-05 03:55:24 +0530 | [diff] [blame] | 565 | "conn_na %u abort_na %u " |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 566 | "%pI4:%d/%d <-> %pI4:%d/%d\n", |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 567 | ep, ep->com.cm_id, ep->com.qp, |
| 568 | (int)ep->com.state, ep->com.flags, |
| 569 | ep->com.history, ep->hwtid, ep->atid, |
Hariprasad S | 179d03b | 2015-05-05 03:55:24 +0530 | [diff] [blame] | 570 | ep->stats.connect_neg_adv, |
| 571 | ep->stats.abort_neg_adv, |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 572 | &lsin->sin_addr, ntohs(lsin->sin_port), |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 573 | ntohs(mapped_lsin->sin_port), |
| 574 | &rsin->sin_addr, ntohs(rsin->sin_port), |
| 575 | ntohs(mapped_rsin->sin_port)); |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 576 | } else { |
| 577 | struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *) |
| 578 | &ep->com.local_addr; |
| 579 | struct sockaddr_in6 *rsin6 = (struct sockaddr_in6 *) |
| 580 | &ep->com.remote_addr; |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 581 | struct sockaddr_in6 *mapped_lsin6 = (struct sockaddr_in6 *) |
| 582 | &ep->com.mapped_local_addr; |
| 583 | struct sockaddr_in6 *mapped_rsin6 = (struct sockaddr_in6 *) |
| 584 | &ep->com.mapped_remote_addr; |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 585 | |
| 586 | cc = snprintf(epd->buf + epd->pos, space, |
| 587 | "ep %p cm_id %p qp %p state %d flags 0x%lx " |
| 588 | "history 0x%lx hwtid %d atid %d " |
Hariprasad S | 179d03b | 2015-05-05 03:55:24 +0530 | [diff] [blame] | 589 | "conn_na %u abort_na %u " |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 590 | "%pI6:%d/%d <-> %pI6:%d/%d\n", |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 591 | ep, ep->com.cm_id, ep->com.qp, |
| 592 | (int)ep->com.state, ep->com.flags, |
| 593 | ep->com.history, ep->hwtid, ep->atid, |
Hariprasad S | 179d03b | 2015-05-05 03:55:24 +0530 | [diff] [blame] | 594 | ep->stats.connect_neg_adv, |
| 595 | ep->stats.abort_neg_adv, |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 596 | &lsin6->sin6_addr, ntohs(lsin6->sin6_port), |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 597 | ntohs(mapped_lsin6->sin6_port), |
| 598 | &rsin6->sin6_addr, ntohs(rsin6->sin6_port), |
| 599 | ntohs(mapped_rsin6->sin6_port)); |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 600 | } |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 601 | if (cc < space) |
| 602 | epd->pos += cc; |
| 603 | return 0; |
| 604 | } |
| 605 | |
| 606 | static int dump_listen_ep(int id, void *p, void *data) |
| 607 | { |
| 608 | struct c4iw_listen_ep *ep = p; |
| 609 | struct c4iw_debugfs_data *epd = data; |
| 610 | int space; |
| 611 | int cc; |
| 612 | |
| 613 | space = epd->bufsize - epd->pos - 1; |
| 614 | if (space == 0) |
| 615 | return 1; |
| 616 | |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 617 | if (ep->com.local_addr.ss_family == AF_INET) { |
| 618 | struct sockaddr_in *lsin = (struct sockaddr_in *) |
| 619 | &ep->com.local_addr; |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 620 | struct sockaddr_in *mapped_lsin = (struct sockaddr_in *) |
| 621 | &ep->com.mapped_local_addr; |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 622 | |
| 623 | cc = snprintf(epd->buf + epd->pos, space, |
| 624 | "ep %p cm_id %p state %d flags 0x%lx stid %d " |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 625 | "backlog %d %pI4:%d/%d\n", |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 626 | ep, ep->com.cm_id, (int)ep->com.state, |
| 627 | ep->com.flags, ep->stid, ep->backlog, |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 628 | &lsin->sin_addr, ntohs(lsin->sin_port), |
| 629 | ntohs(mapped_lsin->sin_port)); |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 630 | } else { |
| 631 | struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *) |
| 632 | &ep->com.local_addr; |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 633 | struct sockaddr_in6 *mapped_lsin6 = (struct sockaddr_in6 *) |
| 634 | &ep->com.mapped_local_addr; |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 635 | |
| 636 | cc = snprintf(epd->buf + epd->pos, space, |
| 637 | "ep %p cm_id %p state %d flags 0x%lx stid %d " |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 638 | "backlog %d %pI6:%d/%d\n", |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 639 | ep, ep->com.cm_id, (int)ep->com.state, |
| 640 | ep->com.flags, ep->stid, ep->backlog, |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 641 | &lsin6->sin6_addr, ntohs(lsin6->sin6_port), |
| 642 | ntohs(mapped_lsin6->sin6_port)); |
Vipul Pandya | 830662f | 2013-07-04 16:10:47 +0530 | [diff] [blame] | 643 | } |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 644 | if (cc < space) |
| 645 | epd->pos += cc; |
| 646 | return 0; |
| 647 | } |
| 648 | |
| 649 | static int ep_release(struct inode *inode, struct file *file) |
| 650 | { |
| 651 | struct c4iw_debugfs_data *epd = file->private_data; |
| 652 | if (!epd) { |
| 653 | pr_info("%s null qpd?\n", __func__); |
| 654 | return 0; |
| 655 | } |
| 656 | vfree(epd->buf); |
| 657 | kfree(epd); |
| 658 | return 0; |
| 659 | } |
| 660 | |
| 661 | static int ep_open(struct inode *inode, struct file *file) |
| 662 | { |
| 663 | struct c4iw_debugfs_data *epd; |
| 664 | int ret = 0; |
| 665 | int count = 1; |
| 666 | |
| 667 | epd = kmalloc(sizeof(*epd), GFP_KERNEL); |
| 668 | if (!epd) { |
| 669 | ret = -ENOMEM; |
| 670 | goto out; |
| 671 | } |
| 672 | epd->devp = inode->i_private; |
| 673 | epd->pos = 0; |
| 674 | |
| 675 | spin_lock_irq(&epd->devp->lock); |
| 676 | idr_for_each(&epd->devp->hwtid_idr, count_idrs, &count); |
| 677 | idr_for_each(&epd->devp->atid_idr, count_idrs, &count); |
| 678 | idr_for_each(&epd->devp->stid_idr, count_idrs, &count); |
| 679 | spin_unlock_irq(&epd->devp->lock); |
| 680 | |
Pramod Kumar | 63a71ba | 2014-11-21 09:36:35 -0600 | [diff] [blame] | 681 | epd->bufsize = count * 240; |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 682 | epd->buf = vmalloc(epd->bufsize); |
| 683 | if (!epd->buf) { |
| 684 | ret = -ENOMEM; |
| 685 | goto err1; |
| 686 | } |
| 687 | |
| 688 | spin_lock_irq(&epd->devp->lock); |
| 689 | idr_for_each(&epd->devp->hwtid_idr, dump_ep, epd); |
| 690 | idr_for_each(&epd->devp->atid_idr, dump_ep, epd); |
| 691 | idr_for_each(&epd->devp->stid_idr, dump_listen_ep, epd); |
| 692 | spin_unlock_irq(&epd->devp->lock); |
| 693 | |
| 694 | file->private_data = epd; |
| 695 | goto out; |
| 696 | err1: |
| 697 | kfree(epd); |
| 698 | out: |
| 699 | return ret; |
| 700 | } |
| 701 | |
| 702 | static const struct file_operations ep_debugfs_fops = { |
| 703 | .owner = THIS_MODULE, |
| 704 | .open = ep_open, |
| 705 | .release = ep_release, |
| 706 | .read = debugfs_read, |
| 707 | }; |
| 708 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 709 | static int setup_debugfs(struct c4iw_dev *devp) |
| 710 | { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 711 | if (!devp->debugfs_root) |
| 712 | return -1; |
| 713 | |
David Howells | e59b4e9 | 2015-01-21 20:03:40 +0000 | [diff] [blame] | 714 | debugfs_create_file_size("qps", S_IWUSR, devp->debugfs_root, |
| 715 | (void *)devp, &qp_debugfs_fops, 4096); |
Steve Wise | 9e8d1fa3 | 2010-09-10 11:15:20 -0500 | [diff] [blame] | 716 | |
David Howells | e59b4e9 | 2015-01-21 20:03:40 +0000 | [diff] [blame] | 717 | debugfs_create_file_size("stags", S_IWUSR, devp->debugfs_root, |
| 718 | (void *)devp, &stag_debugfs_fops, 4096); |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 719 | |
David Howells | e59b4e9 | 2015-01-21 20:03:40 +0000 | [diff] [blame] | 720 | debugfs_create_file_size("stats", S_IWUSR, devp->debugfs_root, |
| 721 | (void *)devp, &stats_debugfs_fops, 4096); |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 722 | |
David Howells | e59b4e9 | 2015-01-21 20:03:40 +0000 | [diff] [blame] | 723 | debugfs_create_file_size("eps", S_IWUSR, devp->debugfs_root, |
| 724 | (void *)devp, &ep_debugfs_fops, 4096); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 725 | |
David Howells | e59b4e9 | 2015-01-21 20:03:40 +0000 | [diff] [blame] | 726 | if (c4iw_wr_log) |
| 727 | debugfs_create_file_size("wr_log", S_IWUSR, devp->debugfs_root, |
| 728 | (void *)devp, &wr_log_debugfs_fops, 4096); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 729 | return 0; |
| 730 | } |
| 731 | |
| 732 | void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev, |
| 733 | struct c4iw_dev_ucontext *uctx) |
| 734 | { |
| 735 | struct list_head *pos, *nxt; |
| 736 | struct c4iw_qid_list *entry; |
| 737 | |
| 738 | mutex_lock(&uctx->lock); |
| 739 | list_for_each_safe(pos, nxt, &uctx->qpids) { |
| 740 | entry = list_entry(pos, struct c4iw_qid_list, entry); |
| 741 | list_del_init(&entry->entry); |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 742 | if (!(entry->qid & rdev->qpmask)) { |
Vipul Pandya | ec3eead | 2012-05-18 15:29:32 +0530 | [diff] [blame] | 743 | c4iw_put_resource(&rdev->resource.qid_table, |
| 744 | entry->qid); |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 745 | mutex_lock(&rdev->stats.lock); |
| 746 | rdev->stats.qid.cur -= rdev->qpmask + 1; |
| 747 | mutex_unlock(&rdev->stats.lock); |
| 748 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 749 | kfree(entry); |
| 750 | } |
| 751 | |
| 752 | list_for_each_safe(pos, nxt, &uctx->qpids) { |
| 753 | entry = list_entry(pos, struct c4iw_qid_list, entry); |
| 754 | list_del_init(&entry->entry); |
| 755 | kfree(entry); |
| 756 | } |
| 757 | mutex_unlock(&uctx->lock); |
| 758 | } |
| 759 | |
| 760 | void c4iw_init_dev_ucontext(struct c4iw_rdev *rdev, |
| 761 | struct c4iw_dev_ucontext *uctx) |
| 762 | { |
| 763 | INIT_LIST_HEAD(&uctx->qpids); |
| 764 | INIT_LIST_HEAD(&uctx->cqids); |
| 765 | mutex_init(&uctx->lock); |
| 766 | } |
| 767 | |
| 768 | /* Caller takes care of locking if needed */ |
| 769 | static int c4iw_rdev_open(struct c4iw_rdev *rdev) |
| 770 | { |
| 771 | int err; |
| 772 | |
| 773 | c4iw_init_dev_ucontext(rdev, &rdev->uctx); |
| 774 | |
| 775 | /* |
Hariprasad S | 4a75a86 | 2015-04-22 01:45:01 +0530 | [diff] [blame] | 776 | * This implementation assumes udb_density == ucq_density! Eventually |
| 777 | * we might need to support this but for now fail the open. Also the |
| 778 | * cqid and qpid range must match for now. |
| 779 | */ |
| 780 | if (rdev->lldi.udb_density != rdev->lldi.ucq_density) { |
| 781 | pr_err(MOD "%s: unsupported udb/ucq densities %u/%u\n", |
| 782 | pci_name(rdev->lldi.pdev), rdev->lldi.udb_density, |
| 783 | rdev->lldi.ucq_density); |
| 784 | err = -EINVAL; |
| 785 | goto err1; |
| 786 | } |
| 787 | if (rdev->lldi.vr->qp.start != rdev->lldi.vr->cq.start || |
| 788 | rdev->lldi.vr->qp.size != rdev->lldi.vr->cq.size) { |
| 789 | pr_err(MOD "%s: unsupported qp and cq id ranges " |
| 790 | "qp start %u size %u cq start %u size %u\n", |
| 791 | pci_name(rdev->lldi.pdev), rdev->lldi.vr->qp.start, |
| 792 | rdev->lldi.vr->qp.size, rdev->lldi.vr->cq.size, |
| 793 | rdev->lldi.vr->cq.size); |
| 794 | err = -EINVAL; |
| 795 | goto err1; |
| 796 | } |
| 797 | |
| 798 | /* |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 799 | * qpshift is the number of bits to shift the qpid left in order |
| 800 | * to get the correct address of the doorbell for that qp. |
| 801 | */ |
| 802 | rdev->qpshift = PAGE_SHIFT - ilog2(rdev->lldi.udb_density); |
| 803 | rdev->qpmask = rdev->lldi.udb_density - 1; |
| 804 | rdev->cqshift = PAGE_SHIFT - ilog2(rdev->lldi.ucq_density); |
| 805 | rdev->cqmask = rdev->lldi.ucq_density - 1; |
| 806 | 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] | 807 | "pbl start 0x%0x size 0x%0x rq start 0x%0x size 0x%0x " |
| 808 | "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] | 809 | __func__, pci_name(rdev->lldi.pdev), rdev->lldi.vr->stag.start, |
| 810 | rdev->lldi.vr->stag.size, c4iw_num_stags(rdev), |
| 811 | rdev->lldi.vr->pbl.start, |
| 812 | rdev->lldi.vr->pbl.size, rdev->lldi.vr->rq.start, |
Steve Wise | 93fb72e | 2010-06-23 15:46:55 +0000 | [diff] [blame] | 813 | rdev->lldi.vr->rq.size, |
| 814 | rdev->lldi.vr->qp.start, |
| 815 | rdev->lldi.vr->qp.size, |
| 816 | rdev->lldi.vr->cq.start, |
| 817 | rdev->lldi.vr->cq.size); |
Hariprasad S | 6198dd8 | 2015-04-22 01:44:59 +0530 | [diff] [blame] | 818 | PDBG("udb len 0x%x udb base %p db_reg %p gts_reg %p qpshift %lu " |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 819 | "qpmask 0x%x cqshift %lu cqmask 0x%x\n", |
| 820 | (unsigned)pci_resource_len(rdev->lldi.pdev, 2), |
Hariprasad S | 6198dd8 | 2015-04-22 01:44:59 +0530 | [diff] [blame] | 821 | (void *)pci_resource_start(rdev->lldi.pdev, 2), |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 822 | rdev->lldi.db_reg, |
| 823 | rdev->lldi.gts_reg, |
| 824 | rdev->qpshift, rdev->qpmask, |
| 825 | rdev->cqshift, rdev->cqmask); |
| 826 | |
| 827 | if (c4iw_num_stags(rdev) == 0) { |
| 828 | err = -EINVAL; |
| 829 | goto err1; |
| 830 | } |
| 831 | |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 832 | rdev->stats.pd.total = T4_MAX_NUM_PD; |
| 833 | rdev->stats.stag.total = rdev->lldi.vr->stag.size; |
| 834 | rdev->stats.pbl.total = rdev->lldi.vr->pbl.size; |
| 835 | rdev->stats.rqt.total = rdev->lldi.vr->rq.size; |
| 836 | rdev->stats.ocqp.total = rdev->lldi.vr->ocq.size; |
| 837 | rdev->stats.qid.total = rdev->lldi.vr->qp.size; |
| 838 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 839 | err = c4iw_init_resource(rdev, c4iw_num_stags(rdev), T4_MAX_NUM_PD); |
| 840 | if (err) { |
| 841 | printk(KERN_ERR MOD "error %d initializing resources\n", err); |
| 842 | goto err1; |
| 843 | } |
| 844 | err = c4iw_pblpool_create(rdev); |
| 845 | if (err) { |
| 846 | printk(KERN_ERR MOD "error %d initializing pbl pool\n", err); |
| 847 | goto err2; |
| 848 | } |
| 849 | err = c4iw_rqtpool_create(rdev); |
| 850 | if (err) { |
| 851 | printk(KERN_ERR MOD "error %d initializing rqt pool\n", err); |
| 852 | goto err3; |
| 853 | } |
Steve Wise | c6d7b26 | 2010-09-13 11:23:57 -0500 | [diff] [blame] | 854 | err = c4iw_ocqp_pool_create(rdev); |
| 855 | if (err) { |
| 856 | printk(KERN_ERR MOD "error %d initializing ocqp pool\n", err); |
| 857 | goto err4; |
| 858 | } |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 859 | rdev->status_page = (struct t4_dev_status_page *) |
| 860 | __get_free_page(GFP_KERNEL); |
| 861 | if (!rdev->status_page) { |
| 862 | pr_err(MOD "error allocating status page\n"); |
| 863 | goto err4; |
| 864 | } |
David S. Miller | 8fd90bb | 2014-07-22 00:44:59 -0700 | [diff] [blame] | 865 | |
Hariprasad Shenai | 7730b4c | 2014-07-14 21:34:54 +0530 | [diff] [blame] | 866 | if (c4iw_wr_log) { |
| 867 | rdev->wr_log = kzalloc((1 << c4iw_wr_log_size_order) * |
| 868 | sizeof(*rdev->wr_log), GFP_KERNEL); |
| 869 | if (rdev->wr_log) { |
| 870 | rdev->wr_log_size = 1 << c4iw_wr_log_size_order; |
| 871 | atomic_set(&rdev->wr_log_idx, 0); |
| 872 | } else { |
| 873 | pr_err(MOD "error allocating wr_log. Logging disabled\n"); |
| 874 | } |
| 875 | } |
David S. Miller | 8fd90bb | 2014-07-22 00:44:59 -0700 | [diff] [blame] | 876 | |
Steve Wise | 6b54d54 | 2014-07-08 10:20:35 -0500 | [diff] [blame] | 877 | rdev->status_page->db_off = 0; |
David S. Miller | 8fd90bb | 2014-07-22 00:44:59 -0700 | [diff] [blame] | 878 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 879 | return 0; |
Steve Wise | c6d7b26 | 2010-09-13 11:23:57 -0500 | [diff] [blame] | 880 | err4: |
| 881 | c4iw_rqtpool_destroy(rdev); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 882 | err3: |
| 883 | c4iw_pblpool_destroy(rdev); |
| 884 | err2: |
| 885 | c4iw_destroy_resource(&rdev->resource); |
| 886 | err1: |
| 887 | return err; |
| 888 | } |
| 889 | |
| 890 | static void c4iw_rdev_close(struct c4iw_rdev *rdev) |
| 891 | { |
Hariprasad Shenai | 7730b4c | 2014-07-14 21:34:54 +0530 | [diff] [blame] | 892 | kfree(rdev->wr_log); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 893 | free_page((unsigned long)rdev->status_page); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 894 | c4iw_pblpool_destroy(rdev); |
| 895 | c4iw_rqtpool_destroy(rdev); |
| 896 | c4iw_destroy_resource(&rdev->resource); |
| 897 | } |
| 898 | |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 899 | static void c4iw_dealloc(struct uld_ctx *ctx) |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 900 | { |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 901 | c4iw_rdev_close(&ctx->dev->rdev); |
| 902 | idr_destroy(&ctx->dev->cqidr); |
| 903 | idr_destroy(&ctx->dev->qpidr); |
| 904 | idr_destroy(&ctx->dev->mmidr); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 905 | idr_destroy(&ctx->dev->hwtid_idr); |
| 906 | idr_destroy(&ctx->dev->stid_idr); |
| 907 | idr_destroy(&ctx->dev->atid_idr); |
Steve Wise | fa658a9 | 2014-04-09 09:38:25 -0500 | [diff] [blame] | 908 | if (ctx->dev->rdev.bar2_kva) |
| 909 | iounmap(ctx->dev->rdev.bar2_kva); |
| 910 | if (ctx->dev->rdev.oc_mw_kva) |
| 911 | iounmap(ctx->dev->rdev.oc_mw_kva); |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 912 | ib_dealloc_device(&ctx->dev->ibdev); |
| 913 | ctx->dev = NULL; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 914 | } |
| 915 | |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 916 | static void c4iw_remove(struct uld_ctx *ctx) |
| 917 | { |
| 918 | PDBG("%s c4iw_dev %p\n", __func__, ctx->dev); |
| 919 | c4iw_unregister_device(ctx->dev); |
| 920 | c4iw_dealloc(ctx); |
| 921 | } |
| 922 | |
| 923 | static int rdma_supported(const struct cxgb4_lld_info *infop) |
| 924 | { |
| 925 | return infop->vr->stag.size > 0 && infop->vr->pbl.size > 0 && |
| 926 | infop->vr->rq.size > 0 && infop->vr->qp.size > 0 && |
Vipul Pandya | f079af7 | 2013-03-14 05:08:58 +0000 | [diff] [blame] | 927 | infop->vr->cq.size > 0; |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 928 | } |
| 929 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 930 | static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop) |
| 931 | { |
| 932 | struct c4iw_dev *devp; |
| 933 | int ret; |
| 934 | |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 935 | if (!rdma_supported(infop)) { |
| 936 | printk(KERN_INFO MOD "%s: RDMA not supported on this device.\n", |
| 937 | pci_name(infop->pdev)); |
| 938 | return ERR_PTR(-ENOSYS); |
| 939 | } |
Vipul Pandya | f079af7 | 2013-03-14 05:08:58 +0000 | [diff] [blame] | 940 | if (!ocqp_supported(infop)) |
| 941 | pr_info("%s: On-Chip Queues not supported on this device.\n", |
| 942 | pci_name(infop->pdev)); |
Vipul Pandya | 80ccdd6 | 2013-03-14 05:09:00 +0000 | [diff] [blame] | 943 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 944 | devp = (struct c4iw_dev *)ib_alloc_device(sizeof(*devp)); |
| 945 | if (!devp) { |
| 946 | printk(KERN_ERR MOD "Cannot allocate ib device\n"); |
Steve Wise | bbe9a0a | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 947 | return ERR_PTR(-ENOMEM); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 948 | } |
| 949 | devp->rdev.lldi = *infop; |
| 950 | |
Hariprasad Shenai | 04e10e2 | 2014-07-14 21:34:51 +0530 | [diff] [blame] | 951 | /* init various hw-queue params based on lld info */ |
| 952 | PDBG("%s: Ing. padding boundary is %d, egrsstatuspagesize = %d\n", |
| 953 | __func__, devp->rdev.lldi.sge_ingpadboundary, |
| 954 | devp->rdev.lldi.sge_egrstatuspagesize); |
| 955 | |
| 956 | devp->rdev.hw_queue.t4_eq_status_entries = |
| 957 | devp->rdev.lldi.sge_ingpadboundary > 64 ? 2 : 1; |
Hariprasad Shenai | 66eb19a | 2014-07-21 20:55:15 +0530 | [diff] [blame] | 958 | devp->rdev.hw_queue.t4_max_eq_size = 65520; |
| 959 | devp->rdev.hw_queue.t4_max_iq_size = 65520; |
| 960 | devp->rdev.hw_queue.t4_max_rq_size = 8192 - |
| 961 | devp->rdev.hw_queue.t4_eq_status_entries - 1; |
Hariprasad Shenai | 04e10e2 | 2014-07-14 21:34:51 +0530 | [diff] [blame] | 962 | devp->rdev.hw_queue.t4_max_sq_size = |
Hariprasad Shenai | 66eb19a | 2014-07-21 20:55:15 +0530 | [diff] [blame] | 963 | devp->rdev.hw_queue.t4_max_eq_size - |
| 964 | devp->rdev.hw_queue.t4_eq_status_entries - 1; |
Hariprasad Shenai | 04e10e2 | 2014-07-14 21:34:51 +0530 | [diff] [blame] | 965 | devp->rdev.hw_queue.t4_max_qp_depth = |
Hariprasad Shenai | 66eb19a | 2014-07-21 20:55:15 +0530 | [diff] [blame] | 966 | devp->rdev.hw_queue.t4_max_rq_size; |
Hariprasad Shenai | 04e10e2 | 2014-07-14 21:34:51 +0530 | [diff] [blame] | 967 | devp->rdev.hw_queue.t4_max_cq_depth = |
Hariprasad Shenai | 66eb19a | 2014-07-21 20:55:15 +0530 | [diff] [blame] | 968 | devp->rdev.hw_queue.t4_max_iq_size - 2; |
Hariprasad Shenai | 04e10e2 | 2014-07-14 21:34:51 +0530 | [diff] [blame] | 969 | devp->rdev.hw_queue.t4_stat_len = |
| 970 | devp->rdev.lldi.sge_egrstatuspagesize; |
| 971 | |
Steve Wise | fa658a9 | 2014-04-09 09:38:25 -0500 | [diff] [blame] | 972 | /* |
| 973 | * For T5 devices, we map all of BAR2 with WC. |
| 974 | * For T4 devices with onchip qp mem, we map only that part |
| 975 | * of BAR2 with WC. |
| 976 | */ |
| 977 | devp->rdev.bar2_pa = pci_resource_start(devp->rdev.lldi.pdev, 2); |
| 978 | if (is_t5(devp->rdev.lldi.adapter_type)) { |
| 979 | devp->rdev.bar2_kva = ioremap_wc(devp->rdev.bar2_pa, |
| 980 | pci_resource_len(devp->rdev.lldi.pdev, 2)); |
| 981 | if (!devp->rdev.bar2_kva) { |
| 982 | pr_err(MOD "Unable to ioremap BAR2\n"); |
Christoph Jaeger | 65b302a | 2014-04-21 17:02:42 +0200 | [diff] [blame] | 983 | ib_dealloc_device(&devp->ibdev); |
Steve Wise | fa658a9 | 2014-04-09 09:38:25 -0500 | [diff] [blame] | 984 | return ERR_PTR(-EINVAL); |
| 985 | } |
| 986 | } else if (ocqp_supported(infop)) { |
| 987 | devp->rdev.oc_mw_pa = |
| 988 | pci_resource_start(devp->rdev.lldi.pdev, 2) + |
| 989 | pci_resource_len(devp->rdev.lldi.pdev, 2) - |
| 990 | roundup_pow_of_two(devp->rdev.lldi.vr->ocq.size); |
| 991 | devp->rdev.oc_mw_kva = ioremap_wc(devp->rdev.oc_mw_pa, |
| 992 | devp->rdev.lldi.vr->ocq.size); |
| 993 | if (!devp->rdev.oc_mw_kva) { |
| 994 | pr_err(MOD "Unable to ioremap onchip mem\n"); |
Christoph Jaeger | 65b302a | 2014-04-21 17:02:42 +0200 | [diff] [blame] | 995 | ib_dealloc_device(&devp->ibdev); |
Steve Wise | fa658a9 | 2014-04-09 09:38:25 -0500 | [diff] [blame] | 996 | return ERR_PTR(-EINVAL); |
| 997 | } |
| 998 | } |
Steve Wise | c6d7b26 | 2010-09-13 11:23:57 -0500 | [diff] [blame] | 999 | |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1000 | PDBG(KERN_INFO MOD "ocq memory: " |
Steve Wise | c6d7b26 | 2010-09-13 11:23:57 -0500 | [diff] [blame] | 1001 | "hw_start 0x%x size %u mw_pa 0x%lx mw_kva %p\n", |
| 1002 | devp->rdev.lldi.vr->ocq.start, devp->rdev.lldi.vr->ocq.size, |
| 1003 | devp->rdev.oc_mw_pa, devp->rdev.oc_mw_kva); |
| 1004 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1005 | ret = c4iw_rdev_open(&devp->rdev); |
| 1006 | if (ret) { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1007 | printk(KERN_ERR MOD "Unable to open CXIO rdev err %d\n", ret); |
| 1008 | ib_dealloc_device(&devp->ibdev); |
Steve Wise | bbe9a0a | 2011-05-09 22:06:22 -0700 | [diff] [blame] | 1009 | return ERR_PTR(ret); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1010 | } |
| 1011 | |
| 1012 | idr_init(&devp->cqidr); |
| 1013 | idr_init(&devp->qpidr); |
| 1014 | idr_init(&devp->mmidr); |
Vipul Pandya | 793dad9 | 2012-12-10 09:30:56 +0000 | [diff] [blame] | 1015 | idr_init(&devp->hwtid_idr); |
| 1016 | idr_init(&devp->stid_idr); |
| 1017 | idr_init(&devp->atid_idr); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1018 | spin_lock_init(&devp->lock); |
Vipul Pandya | 8d81ef3 | 2012-05-18 15:29:27 +0530 | [diff] [blame] | 1019 | mutex_init(&devp->rdev.stats.lock); |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1020 | mutex_init(&devp->db_mutex); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1021 | INIT_LIST_HEAD(&devp->db_fc_list); |
Hariprasad Shenai | 4c2c576 | 2014-07-14 21:34:52 +0530 | [diff] [blame] | 1022 | devp->avail_ird = devp->rdev.lldi.max_ird_adapter; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1023 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1024 | if (c4iw_debugfs_root) { |
| 1025 | devp->debugfs_root = debugfs_create_dir( |
| 1026 | pci_name(devp->rdev.lldi.pdev), |
| 1027 | c4iw_debugfs_root); |
| 1028 | setup_debugfs(devp); |
| 1029 | } |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 1030 | |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 1031 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1032 | return devp; |
| 1033 | } |
| 1034 | |
| 1035 | static void *c4iw_uld_add(const struct cxgb4_lld_info *infop) |
| 1036 | { |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1037 | struct uld_ctx *ctx; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1038 | static int vers_printed; |
| 1039 | int i; |
| 1040 | |
| 1041 | if (!vers_printed++) |
Vipul Pandya | f079af7 | 2013-03-14 05:08:58 +0000 | [diff] [blame] | 1042 | pr_info("Chelsio T4/T5 RDMA Driver - version %s\n", |
| 1043 | DRV_VERSION); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1044 | |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1045 | ctx = kzalloc(sizeof *ctx, GFP_KERNEL); |
| 1046 | if (!ctx) { |
| 1047 | ctx = ERR_PTR(-ENOMEM); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1048 | goto out; |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1049 | } |
| 1050 | ctx->lldi = *infop; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1051 | |
| 1052 | 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] | 1053 | __func__, pci_name(ctx->lldi.pdev), |
| 1054 | ctx->lldi.nchan, ctx->lldi.nrxq, |
| 1055 | ctx->lldi.ntxq, ctx->lldi.nports); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1056 | |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1057 | mutex_lock(&dev_mutex); |
| 1058 | list_add_tail(&ctx->entry, &uld_ctx_list); |
| 1059 | mutex_unlock(&dev_mutex); |
| 1060 | |
| 1061 | for (i = 0; i < ctx->lldi.nrxq; i++) |
| 1062 | PDBG("rxqid[%u] %u\n", i, ctx->lldi.rxq_ids[i]); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1063 | out: |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1064 | return ctx; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1065 | } |
| 1066 | |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1067 | static inline struct sk_buff *copy_gl_to_skb_pkt(const struct pkt_gl *gl, |
| 1068 | const __be64 *rsp, |
| 1069 | u32 pktshift) |
| 1070 | { |
| 1071 | struct sk_buff *skb; |
| 1072 | |
| 1073 | /* |
| 1074 | * Allocate space for cpl_pass_accept_req which will be synthesized by |
| 1075 | * driver. Once the driver synthesizes the request the skb will go |
| 1076 | * through the regular cpl_pass_accept_req processing. |
| 1077 | * The math here assumes sizeof cpl_pass_accept_req >= sizeof |
| 1078 | * cpl_rx_pkt. |
| 1079 | */ |
| 1080 | skb = alloc_skb(gl->tot_len + sizeof(struct cpl_pass_accept_req) + |
| 1081 | sizeof(struct rss_header) - pktshift, GFP_ATOMIC); |
| 1082 | if (unlikely(!skb)) |
| 1083 | return NULL; |
| 1084 | |
| 1085 | __skb_put(skb, gl->tot_len + sizeof(struct cpl_pass_accept_req) + |
| 1086 | sizeof(struct rss_header) - pktshift); |
| 1087 | |
| 1088 | /* |
| 1089 | * This skb will contain: |
| 1090 | * rss_header from the rspq descriptor (1 flit) |
| 1091 | * cpl_rx_pkt struct from the rspq descriptor (2 flits) |
| 1092 | * space for the difference between the size of an |
| 1093 | * rx_pkt and pass_accept_req cpl (1 flit) |
| 1094 | * the packet data from the gl |
| 1095 | */ |
| 1096 | skb_copy_to_linear_data(skb, rsp, sizeof(struct cpl_pass_accept_req) + |
| 1097 | sizeof(struct rss_header)); |
| 1098 | skb_copy_to_linear_data_offset(skb, sizeof(struct rss_header) + |
| 1099 | sizeof(struct cpl_pass_accept_req), |
| 1100 | gl->va + pktshift, |
| 1101 | gl->tot_len - pktshift); |
| 1102 | return skb; |
| 1103 | } |
| 1104 | |
| 1105 | static inline int recv_rx_pkt(struct c4iw_dev *dev, const struct pkt_gl *gl, |
| 1106 | const __be64 *rsp) |
| 1107 | { |
| 1108 | unsigned int opcode = *(u8 *)rsp; |
| 1109 | struct sk_buff *skb; |
| 1110 | |
| 1111 | if (opcode != CPL_RX_PKT) |
| 1112 | goto out; |
| 1113 | |
| 1114 | skb = copy_gl_to_skb_pkt(gl , rsp, dev->rdev.lldi.sge_pktshift); |
| 1115 | if (skb == NULL) |
| 1116 | goto out; |
| 1117 | |
| 1118 | if (c4iw_handlers[opcode] == NULL) { |
| 1119 | pr_info("%s no handler opcode 0x%x...\n", __func__, |
| 1120 | opcode); |
| 1121 | kfree_skb(skb); |
| 1122 | goto out; |
| 1123 | } |
| 1124 | c4iw_handlers[opcode](dev, skb); |
| 1125 | return 1; |
| 1126 | out: |
| 1127 | return 0; |
| 1128 | } |
| 1129 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1130 | static int c4iw_uld_rx_handler(void *handle, const __be64 *rsp, |
| 1131 | const struct pkt_gl *gl) |
| 1132 | { |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1133 | struct uld_ctx *ctx = handle; |
| 1134 | struct c4iw_dev *dev = ctx->dev; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1135 | struct sk_buff *skb; |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1136 | u8 opcode; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1137 | |
| 1138 | if (gl == NULL) { |
| 1139 | /* omit RSS and rsp_ctrl at end of descriptor */ |
| 1140 | unsigned int len = 64 - sizeof(struct rsp_ctrl) - 8; |
| 1141 | |
| 1142 | skb = alloc_skb(256, GFP_ATOMIC); |
| 1143 | if (!skb) |
| 1144 | goto nomem; |
| 1145 | __skb_put(skb, len); |
| 1146 | skb_copy_to_linear_data(skb, &rsp[1], len); |
| 1147 | } else if (gl == CXGB4_MSG_AN) { |
| 1148 | const struct rsp_ctrl *rc = (void *)rsp; |
| 1149 | |
| 1150 | u32 qid = be32_to_cpu(rc->pldbuflen_qid); |
| 1151 | c4iw_ev_handler(dev, qid); |
| 1152 | return 0; |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1153 | } else if (unlikely(*(u8 *)rsp != *(u8 *)gl->va)) { |
| 1154 | if (recv_rx_pkt(dev, gl, rsp)) |
| 1155 | return 0; |
| 1156 | |
| 1157 | pr_info("%s: unexpected FL contents at %p, " \ |
| 1158 | "RSS %#llx, FL %#llx, len %u\n", |
| 1159 | pci_name(ctx->lldi.pdev), gl->va, |
| 1160 | (unsigned long long)be64_to_cpu(*rsp), |
Vipul Pandya | ef5d635 | 2013-01-07 13:12:00 +0000 | [diff] [blame] | 1161 | (unsigned long long)be64_to_cpu( |
| 1162 | *(__force __be64 *)gl->va), |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1163 | gl->tot_len); |
| 1164 | |
| 1165 | return 0; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1166 | } else { |
Steve Wise | da411ba | 2010-10-18 15:16:45 +0000 | [diff] [blame] | 1167 | skb = cxgb4_pktgl_to_skb(gl, 128, 128); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1168 | if (unlikely(!skb)) |
| 1169 | goto nomem; |
| 1170 | } |
| 1171 | |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1172 | opcode = *(u8 *)rsp; |
Steve Wise | dbb084c | 2014-03-21 20:40:30 +0530 | [diff] [blame] | 1173 | if (c4iw_handlers[opcode]) { |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1174 | c4iw_handlers[opcode](dev, skb); |
Steve Wise | dbb084c | 2014-03-21 20:40:30 +0530 | [diff] [blame] | 1175 | } else { |
Vipul Pandya | 1cab775 | 2012-12-10 09:30:55 +0000 | [diff] [blame] | 1176 | pr_info("%s no handler opcode 0x%x...\n", __func__, |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1177 | opcode); |
Steve Wise | dbb084c | 2014-03-21 20:40:30 +0530 | [diff] [blame] | 1178 | kfree_skb(skb); |
| 1179 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1180 | |
| 1181 | return 0; |
| 1182 | nomem: |
| 1183 | return -1; |
| 1184 | } |
| 1185 | |
| 1186 | static int c4iw_uld_state_change(void *handle, enum cxgb4_state new_state) |
| 1187 | { |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1188 | struct uld_ctx *ctx = handle; |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 1189 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1190 | PDBG("%s new_state %u\n", __func__, new_state); |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 1191 | switch (new_state) { |
| 1192 | case CXGB4_STATE_UP: |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1193 | printk(KERN_INFO MOD "%s: Up\n", pci_name(ctx->lldi.pdev)); |
| 1194 | if (!ctx->dev) { |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 1195 | int ret; |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1196 | |
| 1197 | ctx->dev = c4iw_alloc(&ctx->lldi); |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 1198 | if (IS_ERR(ctx->dev)) { |
| 1199 | printk(KERN_ERR MOD |
| 1200 | "%s: initialization failed: %ld\n", |
| 1201 | pci_name(ctx->lldi.pdev), |
| 1202 | PTR_ERR(ctx->dev)); |
| 1203 | ctx->dev = NULL; |
| 1204 | break; |
| 1205 | } |
| 1206 | ret = c4iw_register_device(ctx->dev); |
| 1207 | if (ret) { |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 1208 | printk(KERN_ERR MOD |
| 1209 | "%s: RDMA registration failed: %d\n", |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1210 | pci_name(ctx->lldi.pdev), ret); |
Steve Wise | 9efe10a | 2011-10-06 09:32:44 -0700 | [diff] [blame] | 1211 | c4iw_dealloc(ctx); |
| 1212 | } |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 1213 | } |
| 1214 | break; |
| 1215 | case CXGB4_STATE_DOWN: |
| 1216 | printk(KERN_INFO MOD "%s: Down\n", |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1217 | pci_name(ctx->lldi.pdev)); |
| 1218 | if (ctx->dev) |
| 1219 | c4iw_remove(ctx); |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 1220 | break; |
| 1221 | case CXGB4_STATE_START_RECOVERY: |
| 1222 | printk(KERN_INFO MOD "%s: Fatal Error\n", |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1223 | pci_name(ctx->lldi.pdev)); |
| 1224 | if (ctx->dev) { |
Steve Wise | 767fbe8 | 2011-03-11 22:30:53 +0000 | [diff] [blame] | 1225 | struct ib_event event; |
| 1226 | |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1227 | ctx->dev->rdev.flags |= T4_FATAL_ERROR; |
Steve Wise | 767fbe8 | 2011-03-11 22:30:53 +0000 | [diff] [blame] | 1228 | memset(&event, 0, sizeof event); |
| 1229 | event.event = IB_EVENT_DEVICE_FATAL; |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1230 | event.device = &ctx->dev->ibdev; |
Steve Wise | 767fbe8 | 2011-03-11 22:30:53 +0000 | [diff] [blame] | 1231 | ib_dispatch_event(&event); |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1232 | c4iw_remove(ctx); |
Steve Wise | 767fbe8 | 2011-03-11 22:30:53 +0000 | [diff] [blame] | 1233 | } |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 1234 | break; |
| 1235 | case CXGB4_STATE_DETACH: |
| 1236 | printk(KERN_INFO MOD "%s: Detach\n", |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1237 | pci_name(ctx->lldi.pdev)); |
| 1238 | if (ctx->dev) |
| 1239 | c4iw_remove(ctx); |
Steve Wise | 1c01c53 | 2010-05-20 16:57:32 -0500 | [diff] [blame] | 1240 | break; |
| 1241 | } |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1242 | return 0; |
| 1243 | } |
| 1244 | |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1245 | static int disable_qp_db(int id, void *p, void *data) |
| 1246 | { |
| 1247 | struct c4iw_qp *qp = p; |
| 1248 | |
| 1249 | t4_disable_wq_db(&qp->wq); |
| 1250 | return 0; |
| 1251 | } |
| 1252 | |
| 1253 | static void stop_queues(struct uld_ctx *ctx) |
| 1254 | { |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1255 | unsigned long flags; |
| 1256 | |
| 1257 | spin_lock_irqsave(&ctx->dev->lock, flags); |
| 1258 | ctx->dev->rdev.stats.db_state_transitions++; |
| 1259 | ctx->dev->db_state = STOPPED; |
| 1260 | if (ctx->dev->rdev.flags & T4_STATUS_PAGE_DISABLED) |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1261 | idr_for_each(&ctx->dev->qpidr, disable_qp_db, NULL); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1262 | else |
| 1263 | ctx->dev->rdev.status_page->db_off = 1; |
| 1264 | spin_unlock_irqrestore(&ctx->dev->lock, flags); |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1265 | } |
| 1266 | |
| 1267 | static int enable_qp_db(int id, void *p, void *data) |
| 1268 | { |
| 1269 | struct c4iw_qp *qp = p; |
| 1270 | |
| 1271 | t4_enable_wq_db(&qp->wq); |
| 1272 | return 0; |
| 1273 | } |
| 1274 | |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1275 | static void resume_rc_qp(struct c4iw_qp *qp) |
| 1276 | { |
| 1277 | spin_lock(&qp->lock); |
Steve Wise | fa658a9 | 2014-04-09 09:38:25 -0500 | [diff] [blame] | 1278 | t4_ring_sq_db(&qp->wq, qp->wq.sq.wq_pidx_inc, |
| 1279 | is_t5(qp->rhp->rdev.lldi.adapter_type), NULL); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1280 | qp->wq.sq.wq_pidx_inc = 0; |
Steve Wise | fa658a9 | 2014-04-09 09:38:25 -0500 | [diff] [blame] | 1281 | t4_ring_rq_db(&qp->wq, qp->wq.rq.wq_pidx_inc, |
| 1282 | is_t5(qp->rhp->rdev.lldi.adapter_type), NULL); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1283 | qp->wq.rq.wq_pidx_inc = 0; |
| 1284 | spin_unlock(&qp->lock); |
| 1285 | } |
| 1286 | |
| 1287 | static void resume_a_chunk(struct uld_ctx *ctx) |
| 1288 | { |
| 1289 | int i; |
| 1290 | struct c4iw_qp *qp; |
| 1291 | |
| 1292 | for (i = 0; i < DB_FC_RESUME_SIZE; i++) { |
| 1293 | qp = list_first_entry(&ctx->dev->db_fc_list, struct c4iw_qp, |
| 1294 | db_fc_entry); |
| 1295 | list_del_init(&qp->db_fc_entry); |
| 1296 | resume_rc_qp(qp); |
| 1297 | if (list_empty(&ctx->dev->db_fc_list)) |
| 1298 | break; |
| 1299 | } |
| 1300 | } |
| 1301 | |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1302 | static void resume_queues(struct uld_ctx *ctx) |
| 1303 | { |
| 1304 | spin_lock_irq(&ctx->dev->lock); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1305 | if (ctx->dev->db_state != STOPPED) |
| 1306 | goto out; |
| 1307 | ctx->dev->db_state = FLOW_CONTROL; |
| 1308 | while (1) { |
| 1309 | if (list_empty(&ctx->dev->db_fc_list)) { |
| 1310 | WARN_ON(ctx->dev->db_state != FLOW_CONTROL); |
| 1311 | ctx->dev->db_state = NORMAL; |
| 1312 | ctx->dev->rdev.stats.db_state_transitions++; |
| 1313 | if (ctx->dev->rdev.flags & T4_STATUS_PAGE_DISABLED) { |
| 1314 | idr_for_each(&ctx->dev->qpidr, enable_qp_db, |
| 1315 | NULL); |
| 1316 | } else { |
| 1317 | ctx->dev->rdev.status_page->db_off = 0; |
| 1318 | } |
| 1319 | break; |
| 1320 | } else { |
| 1321 | if (cxgb4_dbfifo_count(ctx->dev->rdev.lldi.ports[0], 1) |
| 1322 | < (ctx->dev->rdev.lldi.dbfifo_int_thresh << |
| 1323 | DB_FC_DRAIN_THRESH)) { |
| 1324 | resume_a_chunk(ctx); |
| 1325 | } |
| 1326 | if (!list_empty(&ctx->dev->db_fc_list)) { |
| 1327 | spin_unlock_irq(&ctx->dev->lock); |
| 1328 | if (DB_FC_RESUME_DELAY) { |
| 1329 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 1330 | schedule_timeout(DB_FC_RESUME_DELAY); |
| 1331 | } |
| 1332 | spin_lock_irq(&ctx->dev->lock); |
| 1333 | if (ctx->dev->db_state != FLOW_CONTROL) |
| 1334 | break; |
| 1335 | } |
| 1336 | } |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1337 | } |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1338 | out: |
| 1339 | if (ctx->dev->db_state != NORMAL) |
| 1340 | ctx->dev->rdev.stats.db_fc_interruptions++; |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1341 | spin_unlock_irq(&ctx->dev->lock); |
| 1342 | } |
| 1343 | |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1344 | struct qp_list { |
| 1345 | unsigned idx; |
| 1346 | struct c4iw_qp **qps; |
| 1347 | }; |
| 1348 | |
| 1349 | static int add_and_ref_qp(int id, void *p, void *data) |
| 1350 | { |
| 1351 | struct qp_list *qp_listp = data; |
| 1352 | struct c4iw_qp *qp = p; |
| 1353 | |
| 1354 | c4iw_qp_add_ref(&qp->ibqp); |
| 1355 | qp_listp->qps[qp_listp->idx++] = qp; |
| 1356 | return 0; |
| 1357 | } |
| 1358 | |
| 1359 | static int count_qps(int id, void *p, void *data) |
| 1360 | { |
| 1361 | unsigned *countp = data; |
| 1362 | (*countp)++; |
| 1363 | return 0; |
| 1364 | } |
| 1365 | |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1366 | static void deref_qps(struct qp_list *qp_list) |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1367 | { |
| 1368 | int idx; |
| 1369 | |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1370 | for (idx = 0; idx < qp_list->idx; idx++) |
| 1371 | c4iw_qp_rem_ref(&qp_list->qps[idx]->ibqp); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1372 | } |
| 1373 | |
| 1374 | static void recover_lost_dbs(struct uld_ctx *ctx, struct qp_list *qp_list) |
| 1375 | { |
| 1376 | int idx; |
| 1377 | int ret; |
| 1378 | |
| 1379 | for (idx = 0; idx < qp_list->idx; idx++) { |
| 1380 | struct c4iw_qp *qp = qp_list->qps[idx]; |
| 1381 | |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1382 | spin_lock_irq(&qp->rhp->lock); |
| 1383 | spin_lock(&qp->lock); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1384 | ret = cxgb4_sync_txq_pidx(qp->rhp->rdev.lldi.ports[0], |
| 1385 | qp->wq.sq.qid, |
| 1386 | t4_sq_host_wq_pidx(&qp->wq), |
| 1387 | t4_sq_wq_size(&qp->wq)); |
| 1388 | if (ret) { |
Joe Perches | f4f01b5 | 2015-05-08 15:58:07 -0700 | [diff] [blame] | 1389 | pr_err(MOD "%s: Fatal error - " |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1390 | "DB overflow recovery failed - " |
| 1391 | "error syncing SQ qid %u\n", |
| 1392 | pci_name(ctx->lldi.pdev), qp->wq.sq.qid); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1393 | spin_unlock(&qp->lock); |
| 1394 | spin_unlock_irq(&qp->rhp->lock); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1395 | return; |
| 1396 | } |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1397 | qp->wq.sq.wq_pidx_inc = 0; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1398 | |
| 1399 | ret = cxgb4_sync_txq_pidx(qp->rhp->rdev.lldi.ports[0], |
| 1400 | qp->wq.rq.qid, |
| 1401 | t4_rq_host_wq_pidx(&qp->wq), |
| 1402 | t4_rq_wq_size(&qp->wq)); |
| 1403 | |
| 1404 | if (ret) { |
Joe Perches | f4f01b5 | 2015-05-08 15:58:07 -0700 | [diff] [blame] | 1405 | pr_err(MOD "%s: Fatal error - " |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1406 | "DB overflow recovery failed - " |
| 1407 | "error syncing RQ qid %u\n", |
| 1408 | pci_name(ctx->lldi.pdev), qp->wq.rq.qid); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1409 | spin_unlock(&qp->lock); |
| 1410 | spin_unlock_irq(&qp->rhp->lock); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1411 | return; |
| 1412 | } |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1413 | qp->wq.rq.wq_pidx_inc = 0; |
| 1414 | spin_unlock(&qp->lock); |
| 1415 | spin_unlock_irq(&qp->rhp->lock); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1416 | |
| 1417 | /* Wait for the dbfifo to drain */ |
| 1418 | while (cxgb4_dbfifo_count(qp->rhp->rdev.lldi.ports[0], 1) > 0) { |
| 1419 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 1420 | schedule_timeout(usecs_to_jiffies(10)); |
| 1421 | } |
| 1422 | } |
| 1423 | } |
| 1424 | |
| 1425 | static void recover_queues(struct uld_ctx *ctx) |
| 1426 | { |
| 1427 | int count = 0; |
| 1428 | struct qp_list qp_list; |
| 1429 | int ret; |
| 1430 | |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1431 | /* slow everybody down */ |
| 1432 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 1433 | schedule_timeout(usecs_to_jiffies(1000)); |
| 1434 | |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1435 | /* flush the SGE contexts */ |
| 1436 | ret = cxgb4_flush_eq_cache(ctx->dev->rdev.lldi.ports[0]); |
| 1437 | if (ret) { |
| 1438 | printk(KERN_ERR MOD "%s: Fatal error - DB overflow recovery failed\n", |
| 1439 | pci_name(ctx->lldi.pdev)); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1440 | return; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1441 | } |
| 1442 | |
| 1443 | /* Count active queues so we can build a list of queues to recover */ |
| 1444 | spin_lock_irq(&ctx->dev->lock); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1445 | WARN_ON(ctx->dev->db_state != STOPPED); |
| 1446 | ctx->dev->db_state = RECOVERY; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1447 | idr_for_each(&ctx->dev->qpidr, count_qps, &count); |
| 1448 | |
| 1449 | qp_list.qps = kzalloc(count * sizeof *qp_list.qps, GFP_ATOMIC); |
| 1450 | if (!qp_list.qps) { |
| 1451 | printk(KERN_ERR MOD "%s: Fatal error - DB overflow recovery failed\n", |
| 1452 | pci_name(ctx->lldi.pdev)); |
| 1453 | spin_unlock_irq(&ctx->dev->lock); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1454 | return; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1455 | } |
| 1456 | qp_list.idx = 0; |
| 1457 | |
| 1458 | /* add and ref each qp so it doesn't get freed */ |
| 1459 | idr_for_each(&ctx->dev->qpidr, add_and_ref_qp, &qp_list); |
| 1460 | |
| 1461 | spin_unlock_irq(&ctx->dev->lock); |
| 1462 | |
| 1463 | /* now traverse the list in a safe context to recover the db state*/ |
| 1464 | recover_lost_dbs(ctx, &qp_list); |
| 1465 | |
| 1466 | /* we're almost done! deref the qps and clean up */ |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1467 | deref_qps(&qp_list); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1468 | kfree(qp_list.qps); |
| 1469 | |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1470 | spin_lock_irq(&ctx->dev->lock); |
Steve Wise | 05eb238 | 2014-03-14 21:52:08 +0530 | [diff] [blame] | 1471 | WARN_ON(ctx->dev->db_state != RECOVERY); |
| 1472 | ctx->dev->db_state = STOPPED; |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1473 | spin_unlock_irq(&ctx->dev->lock); |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1474 | } |
| 1475 | |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1476 | static int c4iw_uld_control(void *handle, enum cxgb4_control control, ...) |
| 1477 | { |
| 1478 | struct uld_ctx *ctx = handle; |
| 1479 | |
| 1480 | switch (control) { |
| 1481 | case CXGB4_CONTROL_DB_FULL: |
| 1482 | stop_queues(ctx); |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1483 | ctx->dev->rdev.stats.db_full++; |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1484 | break; |
| 1485 | case CXGB4_CONTROL_DB_EMPTY: |
| 1486 | resume_queues(ctx); |
| 1487 | mutex_lock(&ctx->dev->rdev.stats.lock); |
| 1488 | ctx->dev->rdev.stats.db_empty++; |
| 1489 | mutex_unlock(&ctx->dev->rdev.stats.lock); |
| 1490 | break; |
| 1491 | case CXGB4_CONTROL_DB_DROP: |
Vipul Pandya | 422eea0 | 2012-05-18 15:29:30 +0530 | [diff] [blame] | 1492 | recover_queues(ctx); |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1493 | mutex_lock(&ctx->dev->rdev.stats.lock); |
| 1494 | ctx->dev->rdev.stats.db_drop++; |
| 1495 | mutex_unlock(&ctx->dev->rdev.stats.lock); |
| 1496 | break; |
| 1497 | default: |
| 1498 | printk(KERN_WARNING MOD "%s: unknown control cmd %u\n", |
| 1499 | pci_name(ctx->lldi.pdev), control); |
| 1500 | break; |
| 1501 | } |
| 1502 | return 0; |
| 1503 | } |
| 1504 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1505 | static struct cxgb4_uld_info c4iw_uld_info = { |
| 1506 | .name = DRV_NAME, |
| 1507 | .add = c4iw_uld_add, |
| 1508 | .rx_handler = c4iw_uld_rx_handler, |
| 1509 | .state_change = c4iw_uld_state_change, |
Vipul Pandya | 2c97478 | 2012-05-18 15:29:28 +0530 | [diff] [blame] | 1510 | .control = c4iw_uld_control, |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1511 | }; |
| 1512 | |
| 1513 | static int __init c4iw_init_module(void) |
| 1514 | { |
| 1515 | int err; |
| 1516 | |
| 1517 | err = c4iw_cm_init(); |
| 1518 | if (err) |
| 1519 | return err; |
| 1520 | |
| 1521 | c4iw_debugfs_root = debugfs_create_dir(DRV_NAME, NULL); |
| 1522 | if (!c4iw_debugfs_root) |
| 1523 | printk(KERN_WARNING MOD |
| 1524 | "could not create debugfs entry, continuing\n"); |
| 1525 | |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 1526 | if (ibnl_add_client(RDMA_NL_C4IW, RDMA_NL_IWPM_NUM_OPS, |
| 1527 | c4iw_nl_cb_table)) |
| 1528 | pr_err("%s[%u]: Failed to add netlink callback\n" |
| 1529 | , __func__, __LINE__); |
| 1530 | |
Steve Wise | 46c1376 | 2014-06-20 14:26:25 -0500 | [diff] [blame] | 1531 | err = iwpm_init(RDMA_NL_C4IW); |
| 1532 | if (err) { |
| 1533 | pr_err("port mapper initialization failed with %d\n", err); |
| 1534 | ibnl_remove_client(RDMA_NL_C4IW); |
| 1535 | c4iw_cm_term(); |
| 1536 | debugfs_remove_recursive(c4iw_debugfs_root); |
| 1537 | return err; |
| 1538 | } |
| 1539 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1540 | cxgb4_register_uld(CXGB4_ULD_RDMA, &c4iw_uld_info); |
| 1541 | |
| 1542 | return 0; |
| 1543 | } |
| 1544 | |
| 1545 | static void __exit c4iw_exit_module(void) |
| 1546 | { |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1547 | struct uld_ctx *ctx, *tmp; |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1548 | |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1549 | mutex_lock(&dev_mutex); |
Steve Wise | 2f25e9a | 2011-05-09 22:06:23 -0700 | [diff] [blame] | 1550 | list_for_each_entry_safe(ctx, tmp, &uld_ctx_list, entry) { |
| 1551 | if (ctx->dev) |
| 1552 | c4iw_remove(ctx); |
| 1553 | kfree(ctx); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1554 | } |
| 1555 | mutex_unlock(&dev_mutex); |
Steve Wise | fd388ce | 2010-05-20 16:57:27 -0500 | [diff] [blame] | 1556 | cxgb4_unregister_uld(CXGB4_ULD_RDMA); |
Steve Wise | 46c1376 | 2014-06-20 14:26:25 -0500 | [diff] [blame] | 1557 | iwpm_exit(RDMA_NL_C4IW); |
Steve Wise | 9eccfe1 | 2014-03-26 17:08:09 -0500 | [diff] [blame] | 1558 | ibnl_remove_client(RDMA_NL_C4IW); |
Steve Wise | cfdda9d | 2010-04-21 15:30:06 -0700 | [diff] [blame] | 1559 | c4iw_cm_term(); |
| 1560 | debugfs_remove_recursive(c4iw_debugfs_root); |
| 1561 | } |
| 1562 | |
| 1563 | module_init(c4iw_init_module); |
| 1564 | module_exit(c4iw_exit_module); |