Commit | Line | Data |
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cfdda9d7 SW |
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> | |
e572568f | 35 | #include <linux/vmalloc.h> |
da388973 | 36 | #include <linux/math64.h> |
cfdda9d7 SW |
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"); | |
f079af7a | 45 | MODULE_DESCRIPTION("Chelsio T4/T5 RDMA Driver"); |
cfdda9d7 | 46 | MODULE_LICENSE("Dual BSD/GPL"); |
cfdda9d7 | 47 | |
80ccdd60 VP |
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 | ||
7730b4c7 HS |
58 | int c4iw_wr_log = 0; |
59 | module_param(c4iw_wr_log, int, 0444); | |
60 | MODULE_PARM_DESC(c4iw_wr_log, "Enables logging of work request timing data."); | |
61 | ||
65d4c01a | 62 | static int c4iw_wr_log_size_order = 12; |
7730b4c7 HS |
63 | module_param(c4iw_wr_log_size_order, int, 0444); |
64 | MODULE_PARM_DESC(c4iw_wr_log_size_order, | |
65 | "Number of entries (log2) in the work request timing log."); | |
66 | ||
2f25e9a5 | 67 | static LIST_HEAD(uld_ctx_list); |
cfdda9d7 | 68 | static DEFINE_MUTEX(dev_mutex); |
0cb65d42 | 69 | static struct workqueue_struct *reg_workq; |
cfdda9d7 | 70 | |
05eb2389 SW |
71 | #define DB_FC_RESUME_SIZE 64 |
72 | #define DB_FC_RESUME_DELAY 1 | |
73 | #define DB_FC_DRAIN_THRESH 0 | |
74 | ||
cfdda9d7 SW |
75 | static struct dentry *c4iw_debugfs_root; |
76 | ||
9e8d1fa3 | 77 | struct c4iw_debugfs_data { |
cfdda9d7 SW |
78 | struct c4iw_dev *devp; |
79 | char *buf; | |
80 | int bufsize; | |
81 | int pos; | |
82 | }; | |
83 | ||
9e8d1fa3 | 84 | static int count_idrs(int id, void *p, void *data) |
cfdda9d7 | 85 | { |
cfdda9d7 SW |
86 | int *countp = data; |
87 | ||
cfdda9d7 SW |
88 | *countp = *countp + 1; |
89 | return 0; | |
90 | } | |
91 | ||
9e8d1fa3 SW |
92 | static ssize_t debugfs_read(struct file *file, char __user *buf, size_t count, |
93 | loff_t *ppos) | |
94 | { | |
95 | struct c4iw_debugfs_data *d = file->private_data; | |
9e8d1fa3 | 96 | |
3160977a | 97 | return simple_read_from_buffer(buf, count, ppos, d->buf, d->pos); |
9e8d1fa3 SW |
98 | } |
99 | ||
7730b4c7 HS |
100 | void c4iw_log_wr_stats(struct t4_wq *wq, struct t4_cqe *cqe) |
101 | { | |
102 | struct wr_log_entry le; | |
103 | int idx; | |
104 | ||
105 | if (!wq->rdev->wr_log) | |
106 | return; | |
107 | ||
108 | idx = (atomic_inc_return(&wq->rdev->wr_log_idx) - 1) & | |
109 | (wq->rdev->wr_log_size - 1); | |
110 | le.poll_sge_ts = cxgb4_read_sge_timestamp(wq->rdev->lldi.ports[0]); | |
f8109d9e | 111 | le.poll_host_time = ktime_get(); |
7730b4c7 HS |
112 | le.valid = 1; |
113 | le.cqe_sge_ts = CQE_TS(cqe); | |
114 | if (SQ_TYPE(cqe)) { | |
115 | le.qid = wq->sq.qid; | |
116 | le.opcode = CQE_OPCODE(cqe); | |
f8109d9e | 117 | le.post_host_time = wq->sq.sw_sq[wq->sq.cidx].host_time; |
7730b4c7 HS |
118 | le.post_sge_ts = wq->sq.sw_sq[wq->sq.cidx].sge_ts; |
119 | le.wr_id = CQE_WRID_SQ_IDX(cqe); | |
120 | } else { | |
121 | le.qid = wq->rq.qid; | |
122 | le.opcode = FW_RI_RECEIVE; | |
f8109d9e | 123 | le.post_host_time = wq->rq.sw_rq[wq->rq.cidx].host_time; |
7730b4c7 HS |
124 | le.post_sge_ts = wq->rq.sw_rq[wq->rq.cidx].sge_ts; |
125 | le.wr_id = CQE_WRID_MSN(cqe); | |
126 | } | |
127 | wq->rdev->wr_log[idx] = le; | |
128 | } | |
129 | ||
130 | static int wr_log_show(struct seq_file *seq, void *v) | |
131 | { | |
132 | struct c4iw_dev *dev = seq->private; | |
f8109d9e | 133 | ktime_t prev_time; |
7730b4c7 | 134 | struct wr_log_entry *lep; |
f8109d9e | 135 | int prev_time_set = 0; |
7730b4c7 HS |
136 | int idx, end; |
137 | ||
6198dd8d | 138 | #define ts2ns(ts) div64_u64((ts) * dev->rdev.lldi.cclk_ps, 1000) |
7730b4c7 HS |
139 | |
140 | idx = atomic_read(&dev->rdev.wr_log_idx) & | |
141 | (dev->rdev.wr_log_size - 1); | |
142 | end = idx - 1; | |
143 | if (end < 0) | |
144 | end = dev->rdev.wr_log_size - 1; | |
145 | lep = &dev->rdev.wr_log[idx]; | |
146 | while (idx != end) { | |
147 | if (lep->valid) { | |
f8109d9e AB |
148 | if (!prev_time_set) { |
149 | prev_time_set = 1; | |
150 | prev_time = lep->poll_host_time; | |
7730b4c7 | 151 | } |
f8109d9e AB |
152 | seq_printf(seq, "%04u: nsec %llu qid %u opcode " |
153 | "%u %s 0x%x host_wr_delta nsec %llu " | |
7730b4c7 HS |
154 | "post_sge_ts 0x%llx cqe_sge_ts 0x%llx " |
155 | "poll_sge_ts 0x%llx post_poll_delta_ns %llu " | |
156 | "cqe_poll_delta_ns %llu\n", | |
157 | idx, | |
f8109d9e AB |
158 | ktime_to_ns(ktime_sub(lep->poll_host_time, |
159 | prev_time)), | |
7730b4c7 HS |
160 | lep->qid, lep->opcode, |
161 | lep->opcode == FW_RI_RECEIVE ? | |
162 | "msn" : "wrid", | |
163 | lep->wr_id, | |
f8109d9e AB |
164 | ktime_to_ns(ktime_sub(lep->poll_host_time, |
165 | lep->post_host_time)), | |
7730b4c7 HS |
166 | lep->post_sge_ts, lep->cqe_sge_ts, |
167 | lep->poll_sge_ts, | |
168 | ts2ns(lep->poll_sge_ts - lep->post_sge_ts), | |
169 | ts2ns(lep->poll_sge_ts - lep->cqe_sge_ts)); | |
f8109d9e | 170 | prev_time = lep->poll_host_time; |
7730b4c7 HS |
171 | } |
172 | idx++; | |
173 | if (idx > (dev->rdev.wr_log_size - 1)) | |
174 | idx = 0; | |
175 | lep = &dev->rdev.wr_log[idx]; | |
176 | } | |
177 | #undef ts2ns | |
178 | return 0; | |
179 | } | |
180 | ||
181 | static int wr_log_open(struct inode *inode, struct file *file) | |
182 | { | |
183 | return single_open(file, wr_log_show, inode->i_private); | |
184 | } | |
185 | ||
186 | static ssize_t wr_log_clear(struct file *file, const char __user *buf, | |
187 | size_t count, loff_t *pos) | |
188 | { | |
189 | struct c4iw_dev *dev = ((struct seq_file *)file->private_data)->private; | |
190 | int i; | |
191 | ||
192 | if (dev->rdev.wr_log) | |
193 | for (i = 0; i < dev->rdev.wr_log_size; i++) | |
194 | dev->rdev.wr_log[i].valid = 0; | |
195 | return count; | |
196 | } | |
197 | ||
198 | static const struct file_operations wr_log_debugfs_fops = { | |
199 | .owner = THIS_MODULE, | |
200 | .open = wr_log_open, | |
201 | .release = single_release, | |
202 | .read = seq_read, | |
203 | .llseek = seq_lseek, | |
204 | .write = wr_log_clear, | |
205 | }; | |
206 | ||
bab572f1 GG |
207 | static struct sockaddr_in zero_sin = { |
208 | .sin_family = AF_INET, | |
209 | }; | |
210 | ||
211 | static struct sockaddr_in6 zero_sin6 = { | |
212 | .sin6_family = AF_INET6, | |
213 | }; | |
214 | ||
215 | static void set_ep_sin_addrs(struct c4iw_ep *ep, | |
216 | struct sockaddr_in **lsin, | |
217 | struct sockaddr_in **rsin, | |
218 | struct sockaddr_in **m_lsin, | |
219 | struct sockaddr_in **m_rsin) | |
220 | { | |
221 | struct iw_cm_id *id = ep->com.cm_id; | |
222 | ||
44016b34 BP |
223 | *m_lsin = (struct sockaddr_in *)&ep->com.local_addr; |
224 | *m_rsin = (struct sockaddr_in *)&ep->com.remote_addr; | |
bab572f1 | 225 | if (id) { |
44016b34 BP |
226 | *lsin = (struct sockaddr_in *)&id->local_addr; |
227 | *rsin = (struct sockaddr_in *)&id->remote_addr; | |
bab572f1 | 228 | } else { |
44016b34 BP |
229 | *lsin = &zero_sin; |
230 | *rsin = &zero_sin; | |
bab572f1 GG |
231 | } |
232 | } | |
233 | ||
234 | static void set_ep_sin6_addrs(struct c4iw_ep *ep, | |
235 | struct sockaddr_in6 **lsin6, | |
236 | struct sockaddr_in6 **rsin6, | |
237 | struct sockaddr_in6 **m_lsin6, | |
238 | struct sockaddr_in6 **m_rsin6) | |
239 | { | |
240 | struct iw_cm_id *id = ep->com.cm_id; | |
241 | ||
44016b34 BP |
242 | *m_lsin6 = (struct sockaddr_in6 *)&ep->com.local_addr; |
243 | *m_rsin6 = (struct sockaddr_in6 *)&ep->com.remote_addr; | |
bab572f1 | 244 | if (id) { |
44016b34 BP |
245 | *lsin6 = (struct sockaddr_in6 *)&id->local_addr; |
246 | *rsin6 = (struct sockaddr_in6 *)&id->remote_addr; | |
bab572f1 | 247 | } else { |
44016b34 BP |
248 | *lsin6 = &zero_sin6; |
249 | *rsin6 = &zero_sin6; | |
bab572f1 GG |
250 | } |
251 | } | |
252 | ||
9e8d1fa3 | 253 | static int dump_qp(int id, void *p, void *data) |
cfdda9d7 SW |
254 | { |
255 | struct c4iw_qp *qp = p; | |
9e8d1fa3 | 256 | struct c4iw_debugfs_data *qpd = data; |
cfdda9d7 SW |
257 | int space; |
258 | int cc; | |
259 | ||
260 | if (id != qp->wq.sq.qid) | |
261 | return 0; | |
262 | ||
263 | space = qpd->bufsize - qpd->pos - 1; | |
264 | if (space == 0) | |
265 | return 1; | |
266 | ||
830662f6 | 267 | if (qp->ep) { |
bab572f1 GG |
268 | struct c4iw_ep *ep = qp->ep; |
269 | ||
270 | if (ep->com.local_addr.ss_family == AF_INET) { | |
271 | struct sockaddr_in *lsin; | |
272 | struct sockaddr_in *rsin; | |
273 | struct sockaddr_in *m_lsin; | |
274 | struct sockaddr_in *m_rsin; | |
830662f6 | 275 | |
bab572f1 | 276 | set_ep_sin_addrs(ep, &lsin, &rsin, &m_lsin, &m_rsin); |
830662f6 VP |
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 " | |
9eccfe10 | 280 | "%pI4:%u/%u->%pI4:%u/%u\n", |
830662f6 VP |
281 | qp->wq.sq.qid, qp->wq.rq.qid, |
282 | (int)qp->attr.state, | |
283 | qp->wq.sq.flags & T4_SQ_ONCHIP, | |
bab572f1 | 284 | ep->hwtid, (int)ep->com.state, |
830662f6 | 285 | &lsin->sin_addr, ntohs(lsin->sin_port), |
bab572f1 | 286 | ntohs(m_lsin->sin_port), |
9eccfe10 | 287 | &rsin->sin_addr, ntohs(rsin->sin_port), |
bab572f1 | 288 | ntohs(m_rsin->sin_port)); |
830662f6 | 289 | } else { |
bab572f1 GG |
290 | struct sockaddr_in6 *lsin6; |
291 | struct sockaddr_in6 *rsin6; | |
292 | struct sockaddr_in6 *m_lsin6; | |
293 | struct sockaddr_in6 *m_rsin6; | |
830662f6 | 294 | |
bab572f1 GG |
295 | set_ep_sin6_addrs(ep, &lsin6, &rsin6, &m_lsin6, |
296 | &m_rsin6); | |
830662f6 VP |
297 | cc = snprintf(qpd->buf + qpd->pos, space, |
298 | "rc qp sq id %u rq id %u state %u " | |
299 | "onchip %u ep tid %u state %u " | |
9eccfe10 | 300 | "%pI6:%u/%u->%pI6:%u/%u\n", |
830662f6 VP |
301 | qp->wq.sq.qid, qp->wq.rq.qid, |
302 | (int)qp->attr.state, | |
303 | qp->wq.sq.flags & T4_SQ_ONCHIP, | |
bab572f1 | 304 | ep->hwtid, (int)ep->com.state, |
830662f6 VP |
305 | &lsin6->sin6_addr, |
306 | ntohs(lsin6->sin6_port), | |
bab572f1 | 307 | ntohs(m_lsin6->sin6_port), |
830662f6 | 308 | &rsin6->sin6_addr, |
9eccfe10 | 309 | ntohs(rsin6->sin6_port), |
bab572f1 | 310 | ntohs(m_rsin6->sin6_port)); |
830662f6 VP |
311 | } |
312 | } else | |
db5d040d SW |
313 | cc = snprintf(qpd->buf + qpd->pos, space, |
314 | "qp sq id %u rq id %u state %u onchip %u\n", | |
315 | qp->wq.sq.qid, qp->wq.rq.qid, | |
316 | (int)qp->attr.state, | |
317 | qp->wq.sq.flags & T4_SQ_ONCHIP); | |
cfdda9d7 SW |
318 | if (cc < space) |
319 | qpd->pos += cc; | |
320 | return 0; | |
321 | } | |
322 | ||
323 | static int qp_release(struct inode *inode, struct file *file) | |
324 | { | |
9e8d1fa3 | 325 | struct c4iw_debugfs_data *qpd = file->private_data; |
cfdda9d7 | 326 | if (!qpd) { |
700456bd | 327 | pr_info("%s null qpd?\n", __func__); |
cfdda9d7 SW |
328 | return 0; |
329 | } | |
d716a2a0 | 330 | vfree(qpd->buf); |
cfdda9d7 SW |
331 | kfree(qpd); |
332 | return 0; | |
333 | } | |
334 | ||
335 | static int qp_open(struct inode *inode, struct file *file) | |
336 | { | |
9e8d1fa3 | 337 | struct c4iw_debugfs_data *qpd; |
cfdda9d7 SW |
338 | int count = 1; |
339 | ||
340 | qpd = kmalloc(sizeof *qpd, GFP_KERNEL); | |
4275a5b2 H |
341 | if (!qpd) |
342 | return -ENOMEM; | |
343 | ||
cfdda9d7 SW |
344 | qpd->devp = inode->i_private; |
345 | qpd->pos = 0; | |
346 | ||
347 | spin_lock_irq(&qpd->devp->lock); | |
9e8d1fa3 | 348 | idr_for_each(&qpd->devp->qpidr, count_idrs, &count); |
cfdda9d7 SW |
349 | spin_unlock_irq(&qpd->devp->lock); |
350 | ||
68cebcab | 351 | qpd->bufsize = count * 180; |
d716a2a0 | 352 | qpd->buf = vmalloc(qpd->bufsize); |
cfdda9d7 | 353 | if (!qpd->buf) { |
4275a5b2 H |
354 | kfree(qpd); |
355 | return -ENOMEM; | |
cfdda9d7 SW |
356 | } |
357 | ||
358 | spin_lock_irq(&qpd->devp->lock); | |
9e8d1fa3 | 359 | idr_for_each(&qpd->devp->qpidr, dump_qp, qpd); |
cfdda9d7 SW |
360 | spin_unlock_irq(&qpd->devp->lock); |
361 | ||
362 | qpd->buf[qpd->pos++] = 0; | |
363 | file->private_data = qpd; | |
4275a5b2 | 364 | return 0; |
cfdda9d7 SW |
365 | } |
366 | ||
9e8d1fa3 SW |
367 | static const struct file_operations qp_debugfs_fops = { |
368 | .owner = THIS_MODULE, | |
369 | .open = qp_open, | |
370 | .release = qp_release, | |
371 | .read = debugfs_read, | |
8bbac892 | 372 | .llseek = default_llseek, |
9e8d1fa3 SW |
373 | }; |
374 | ||
375 | static int dump_stag(int id, void *p, void *data) | |
cfdda9d7 | 376 | { |
9e8d1fa3 SW |
377 | struct c4iw_debugfs_data *stagd = data; |
378 | int space; | |
379 | int cc; | |
031cf476 HS |
380 | struct fw_ri_tpte tpte; |
381 | int ret; | |
cfdda9d7 | 382 | |
9e8d1fa3 SW |
383 | space = stagd->bufsize - stagd->pos - 1; |
384 | if (space == 0) | |
385 | return 1; | |
386 | ||
031cf476 HS |
387 | ret = cxgb4_read_tpte(stagd->devp->rdev.lldi.ports[0], (u32)id<<8, |
388 | (__be32 *)&tpte); | |
389 | if (ret) { | |
390 | dev_err(&stagd->devp->rdev.lldi.pdev->dev, | |
391 | "%s cxgb4_read_tpte err %d\n", __func__, ret); | |
392 | return ret; | |
393 | } | |
394 | cc = snprintf(stagd->buf + stagd->pos, space, | |
395 | "stag: idx 0x%x valid %d key 0x%x state %d pdid %d " | |
396 | "perm 0x%x ps %d len 0x%llx va 0x%llx\n", | |
397 | (u32)id<<8, | |
cf7fe64a HS |
398 | FW_RI_TPTE_VALID_G(ntohl(tpte.valid_to_pdid)), |
399 | FW_RI_TPTE_STAGKEY_G(ntohl(tpte.valid_to_pdid)), | |
400 | FW_RI_TPTE_STAGSTATE_G(ntohl(tpte.valid_to_pdid)), | |
401 | FW_RI_TPTE_PDID_G(ntohl(tpte.valid_to_pdid)), | |
402 | FW_RI_TPTE_PERM_G(ntohl(tpte.locread_to_qpid)), | |
403 | FW_RI_TPTE_PS_G(ntohl(tpte.locread_to_qpid)), | |
031cf476 HS |
404 | ((u64)ntohl(tpte.len_hi) << 32) | ntohl(tpte.len_lo), |
405 | ((u64)ntohl(tpte.va_hi) << 32) | ntohl(tpte.va_lo_fbo)); | |
9e8d1fa3 SW |
406 | if (cc < space) |
407 | stagd->pos += cc; | |
408 | return 0; | |
409 | } | |
410 | ||
411 | static int stag_release(struct inode *inode, struct file *file) | |
412 | { | |
413 | struct c4iw_debugfs_data *stagd = file->private_data; | |
414 | if (!stagd) { | |
700456bd | 415 | pr_info("%s null stagd?\n", __func__); |
cfdda9d7 | 416 | return 0; |
9e8d1fa3 | 417 | } |
031cf476 | 418 | vfree(stagd->buf); |
9e8d1fa3 SW |
419 | kfree(stagd); |
420 | return 0; | |
421 | } | |
cfdda9d7 | 422 | |
9e8d1fa3 SW |
423 | static int stag_open(struct inode *inode, struct file *file) |
424 | { | |
425 | struct c4iw_debugfs_data *stagd; | |
426 | int ret = 0; | |
427 | int count = 1; | |
cfdda9d7 | 428 | |
9e8d1fa3 SW |
429 | stagd = kmalloc(sizeof *stagd, GFP_KERNEL); |
430 | if (!stagd) { | |
431 | ret = -ENOMEM; | |
432 | goto out; | |
433 | } | |
434 | stagd->devp = inode->i_private; | |
435 | stagd->pos = 0; | |
cfdda9d7 | 436 | |
9e8d1fa3 SW |
437 | spin_lock_irq(&stagd->devp->lock); |
438 | idr_for_each(&stagd->devp->mmidr, count_idrs, &count); | |
439 | spin_unlock_irq(&stagd->devp->lock); | |
440 | ||
031cf476 HS |
441 | stagd->bufsize = count * 256; |
442 | stagd->buf = vmalloc(stagd->bufsize); | |
9e8d1fa3 SW |
443 | if (!stagd->buf) { |
444 | ret = -ENOMEM; | |
445 | goto err1; | |
cfdda9d7 | 446 | } |
9e8d1fa3 SW |
447 | |
448 | spin_lock_irq(&stagd->devp->lock); | |
449 | idr_for_each(&stagd->devp->mmidr, dump_stag, stagd); | |
450 | spin_unlock_irq(&stagd->devp->lock); | |
451 | ||
452 | stagd->buf[stagd->pos++] = 0; | |
453 | file->private_data = stagd; | |
454 | goto out; | |
455 | err1: | |
456 | kfree(stagd); | |
457 | out: | |
458 | return ret; | |
cfdda9d7 SW |
459 | } |
460 | ||
9e8d1fa3 | 461 | static const struct file_operations stag_debugfs_fops = { |
cfdda9d7 | 462 | .owner = THIS_MODULE, |
9e8d1fa3 SW |
463 | .open = stag_open, |
464 | .release = stag_release, | |
465 | .read = debugfs_read, | |
8bbac892 | 466 | .llseek = default_llseek, |
cfdda9d7 SW |
467 | }; |
468 | ||
05eb2389 | 469 | static char *db_state_str[] = {"NORMAL", "FLOW_CONTROL", "RECOVERY", "STOPPED"}; |
422eea0a | 470 | |
8d81ef34 VP |
471 | static int stats_show(struct seq_file *seq, void *v) |
472 | { | |
473 | struct c4iw_dev *dev = seq->private; | |
474 | ||
ec3eead2 VP |
475 | seq_printf(seq, " Object: %10s %10s %10s %10s\n", "Total", "Current", |
476 | "Max", "Fail"); | |
477 | seq_printf(seq, " PDID: %10llu %10llu %10llu %10llu\n", | |
8d81ef34 | 478 | dev->rdev.stats.pd.total, dev->rdev.stats.pd.cur, |
ec3eead2 VP |
479 | dev->rdev.stats.pd.max, dev->rdev.stats.pd.fail); |
480 | seq_printf(seq, " QID: %10llu %10llu %10llu %10llu\n", | |
8d81ef34 | 481 | dev->rdev.stats.qid.total, dev->rdev.stats.qid.cur, |
ec3eead2 VP |
482 | dev->rdev.stats.qid.max, dev->rdev.stats.qid.fail); |
483 | seq_printf(seq, " TPTMEM: %10llu %10llu %10llu %10llu\n", | |
8d81ef34 | 484 | dev->rdev.stats.stag.total, dev->rdev.stats.stag.cur, |
ec3eead2 VP |
485 | dev->rdev.stats.stag.max, dev->rdev.stats.stag.fail); |
486 | seq_printf(seq, " PBLMEM: %10llu %10llu %10llu %10llu\n", | |
8d81ef34 | 487 | dev->rdev.stats.pbl.total, dev->rdev.stats.pbl.cur, |
ec3eead2 VP |
488 | dev->rdev.stats.pbl.max, dev->rdev.stats.pbl.fail); |
489 | seq_printf(seq, " RQTMEM: %10llu %10llu %10llu %10llu\n", | |
8d81ef34 | 490 | dev->rdev.stats.rqt.total, dev->rdev.stats.rqt.cur, |
ec3eead2 VP |
491 | dev->rdev.stats.rqt.max, dev->rdev.stats.rqt.fail); |
492 | seq_printf(seq, " OCQPMEM: %10llu %10llu %10llu %10llu\n", | |
8d81ef34 | 493 | dev->rdev.stats.ocqp.total, dev->rdev.stats.ocqp.cur, |
ec3eead2 | 494 | dev->rdev.stats.ocqp.max, dev->rdev.stats.ocqp.fail); |
2c974781 VP |
495 | seq_printf(seq, " DB FULL: %10llu\n", dev->rdev.stats.db_full); |
496 | seq_printf(seq, " DB EMPTY: %10llu\n", dev->rdev.stats.db_empty); | |
497 | seq_printf(seq, " DB DROP: %10llu\n", dev->rdev.stats.db_drop); | |
05eb2389 | 498 | seq_printf(seq, " DB State: %s Transitions %llu FC Interruptions %llu\n", |
422eea0a | 499 | db_state_str[dev->db_state], |
05eb2389 SW |
500 | dev->rdev.stats.db_state_transitions, |
501 | dev->rdev.stats.db_fc_interruptions); | |
1cab775c | 502 | seq_printf(seq, "TCAM_FULL: %10llu\n", dev->rdev.stats.tcam_full); |
793dad94 VP |
503 | seq_printf(seq, "ACT_OFLD_CONN_FAILS: %10llu\n", |
504 | dev->rdev.stats.act_ofld_conn_fails); | |
505 | seq_printf(seq, "PAS_OFLD_CONN_FAILS: %10llu\n", | |
506 | dev->rdev.stats.pas_ofld_conn_fails); | |
179d03bb | 507 | seq_printf(seq, "NEG_ADV_RCVD: %10llu\n", dev->rdev.stats.neg_adv); |
4c2c5763 | 508 | seq_printf(seq, "AVAILABLE IRD: %10u\n", dev->avail_ird); |
8d81ef34 VP |
509 | return 0; |
510 | } | |
511 | ||
512 | static int stats_open(struct inode *inode, struct file *file) | |
513 | { | |
514 | return single_open(file, stats_show, inode->i_private); | |
515 | } | |
516 | ||
517 | static ssize_t stats_clear(struct file *file, const char __user *buf, | |
518 | size_t count, loff_t *pos) | |
519 | { | |
520 | struct c4iw_dev *dev = ((struct seq_file *)file->private_data)->private; | |
521 | ||
522 | mutex_lock(&dev->rdev.stats.lock); | |
523 | dev->rdev.stats.pd.max = 0; | |
ec3eead2 | 524 | dev->rdev.stats.pd.fail = 0; |
8d81ef34 | 525 | dev->rdev.stats.qid.max = 0; |
ec3eead2 | 526 | dev->rdev.stats.qid.fail = 0; |
8d81ef34 | 527 | dev->rdev.stats.stag.max = 0; |
ec3eead2 | 528 | dev->rdev.stats.stag.fail = 0; |
8d81ef34 | 529 | dev->rdev.stats.pbl.max = 0; |
ec3eead2 | 530 | dev->rdev.stats.pbl.fail = 0; |
8d81ef34 | 531 | dev->rdev.stats.rqt.max = 0; |
ec3eead2 | 532 | dev->rdev.stats.rqt.fail = 0; |
8d81ef34 | 533 | dev->rdev.stats.ocqp.max = 0; |
ec3eead2 | 534 | dev->rdev.stats.ocqp.fail = 0; |
2c974781 VP |
535 | dev->rdev.stats.db_full = 0; |
536 | dev->rdev.stats.db_empty = 0; | |
537 | dev->rdev.stats.db_drop = 0; | |
422eea0a | 538 | dev->rdev.stats.db_state_transitions = 0; |
793dad94 VP |
539 | dev->rdev.stats.tcam_full = 0; |
540 | dev->rdev.stats.act_ofld_conn_fails = 0; | |
541 | dev->rdev.stats.pas_ofld_conn_fails = 0; | |
8d81ef34 VP |
542 | mutex_unlock(&dev->rdev.stats.lock); |
543 | return count; | |
544 | } | |
545 | ||
546 | static const struct file_operations stats_debugfs_fops = { | |
547 | .owner = THIS_MODULE, | |
548 | .open = stats_open, | |
549 | .release = single_release, | |
550 | .read = seq_read, | |
551 | .llseek = seq_lseek, | |
552 | .write = stats_clear, | |
553 | }; | |
554 | ||
793dad94 VP |
555 | static int dump_ep(int id, void *p, void *data) |
556 | { | |
557 | struct c4iw_ep *ep = p; | |
558 | struct c4iw_debugfs_data *epd = data; | |
559 | int space; | |
560 | int cc; | |
561 | ||
562 | space = epd->bufsize - epd->pos - 1; | |
563 | if (space == 0) | |
564 | return 1; | |
565 | ||
830662f6 | 566 | if (ep->com.local_addr.ss_family == AF_INET) { |
bab572f1 GG |
567 | struct sockaddr_in *lsin; |
568 | struct sockaddr_in *rsin; | |
569 | struct sockaddr_in *m_lsin; | |
570 | struct sockaddr_in *m_rsin; | |
830662f6 | 571 | |
bab572f1 | 572 | set_ep_sin_addrs(ep, &lsin, &rsin, &m_lsin, &m_rsin); |
830662f6 VP |
573 | cc = snprintf(epd->buf + epd->pos, space, |
574 | "ep %p cm_id %p qp %p state %d flags 0x%lx " | |
575 | "history 0x%lx hwtid %d atid %d " | |
179d03bb | 576 | "conn_na %u abort_na %u " |
9eccfe10 | 577 | "%pI4:%d/%d <-> %pI4:%d/%d\n", |
830662f6 VP |
578 | ep, ep->com.cm_id, ep->com.qp, |
579 | (int)ep->com.state, ep->com.flags, | |
580 | ep->com.history, ep->hwtid, ep->atid, | |
179d03bb H |
581 | ep->stats.connect_neg_adv, |
582 | ep->stats.abort_neg_adv, | |
830662f6 | 583 | &lsin->sin_addr, ntohs(lsin->sin_port), |
bab572f1 | 584 | ntohs(m_lsin->sin_port), |
9eccfe10 | 585 | &rsin->sin_addr, ntohs(rsin->sin_port), |
bab572f1 | 586 | ntohs(m_rsin->sin_port)); |
830662f6 | 587 | } else { |
bab572f1 GG |
588 | struct sockaddr_in6 *lsin6; |
589 | struct sockaddr_in6 *rsin6; | |
590 | struct sockaddr_in6 *m_lsin6; | |
591 | struct sockaddr_in6 *m_rsin6; | |
830662f6 | 592 | |
bab572f1 | 593 | set_ep_sin6_addrs(ep, &lsin6, &rsin6, &m_lsin6, &m_rsin6); |
830662f6 VP |
594 | cc = snprintf(epd->buf + epd->pos, space, |
595 | "ep %p cm_id %p qp %p state %d flags 0x%lx " | |
596 | "history 0x%lx hwtid %d atid %d " | |
179d03bb | 597 | "conn_na %u abort_na %u " |
9eccfe10 | 598 | "%pI6:%d/%d <-> %pI6:%d/%d\n", |
830662f6 VP |
599 | ep, ep->com.cm_id, ep->com.qp, |
600 | (int)ep->com.state, ep->com.flags, | |
601 | ep->com.history, ep->hwtid, ep->atid, | |
179d03bb H |
602 | ep->stats.connect_neg_adv, |
603 | ep->stats.abort_neg_adv, | |
830662f6 | 604 | &lsin6->sin6_addr, ntohs(lsin6->sin6_port), |
bab572f1 | 605 | ntohs(m_lsin6->sin6_port), |
9eccfe10 | 606 | &rsin6->sin6_addr, ntohs(rsin6->sin6_port), |
bab572f1 | 607 | ntohs(m_rsin6->sin6_port)); |
830662f6 | 608 | } |
793dad94 VP |
609 | if (cc < space) |
610 | epd->pos += cc; | |
611 | return 0; | |
612 | } | |
613 | ||
614 | static int dump_listen_ep(int id, void *p, void *data) | |
615 | { | |
616 | struct c4iw_listen_ep *ep = p; | |
617 | struct c4iw_debugfs_data *epd = data; | |
618 | int space; | |
619 | int cc; | |
620 | ||
621 | space = epd->bufsize - epd->pos - 1; | |
622 | if (space == 0) | |
623 | return 1; | |
624 | ||
830662f6 VP |
625 | if (ep->com.local_addr.ss_family == AF_INET) { |
626 | struct sockaddr_in *lsin = (struct sockaddr_in *) | |
170003c8 | 627 | &ep->com.cm_id->local_addr; |
bab572f1 | 628 | struct sockaddr_in *m_lsin = (struct sockaddr_in *) |
170003c8 | 629 | &ep->com.cm_id->m_local_addr; |
830662f6 VP |
630 | |
631 | cc = snprintf(epd->buf + epd->pos, space, | |
632 | "ep %p cm_id %p state %d flags 0x%lx stid %d " | |
9eccfe10 | 633 | "backlog %d %pI4:%d/%d\n", |
830662f6 VP |
634 | ep, ep->com.cm_id, (int)ep->com.state, |
635 | ep->com.flags, ep->stid, ep->backlog, | |
9eccfe10 | 636 | &lsin->sin_addr, ntohs(lsin->sin_port), |
bab572f1 | 637 | ntohs(m_lsin->sin_port)); |
830662f6 VP |
638 | } else { |
639 | struct sockaddr_in6 *lsin6 = (struct sockaddr_in6 *) | |
170003c8 | 640 | &ep->com.cm_id->local_addr; |
bab572f1 | 641 | struct sockaddr_in6 *m_lsin6 = (struct sockaddr_in6 *) |
170003c8 | 642 | &ep->com.cm_id->m_local_addr; |
830662f6 VP |
643 | |
644 | cc = snprintf(epd->buf + epd->pos, space, | |
645 | "ep %p cm_id %p state %d flags 0x%lx stid %d " | |
9eccfe10 | 646 | "backlog %d %pI6:%d/%d\n", |
830662f6 VP |
647 | ep, ep->com.cm_id, (int)ep->com.state, |
648 | ep->com.flags, ep->stid, ep->backlog, | |
9eccfe10 | 649 | &lsin6->sin6_addr, ntohs(lsin6->sin6_port), |
bab572f1 | 650 | ntohs(m_lsin6->sin6_port)); |
830662f6 | 651 | } |
793dad94 VP |
652 | if (cc < space) |
653 | epd->pos += cc; | |
654 | return 0; | |
655 | } | |
656 | ||
657 | static int ep_release(struct inode *inode, struct file *file) | |
658 | { | |
659 | struct c4iw_debugfs_data *epd = file->private_data; | |
660 | if (!epd) { | |
661 | pr_info("%s null qpd?\n", __func__); | |
662 | return 0; | |
663 | } | |
664 | vfree(epd->buf); | |
665 | kfree(epd); | |
666 | return 0; | |
667 | } | |
668 | ||
669 | static int ep_open(struct inode *inode, struct file *file) | |
670 | { | |
671 | struct c4iw_debugfs_data *epd; | |
672 | int ret = 0; | |
673 | int count = 1; | |
674 | ||
675 | epd = kmalloc(sizeof(*epd), GFP_KERNEL); | |
676 | if (!epd) { | |
677 | ret = -ENOMEM; | |
678 | goto out; | |
679 | } | |
680 | epd->devp = inode->i_private; | |
681 | epd->pos = 0; | |
682 | ||
683 | spin_lock_irq(&epd->devp->lock); | |
684 | idr_for_each(&epd->devp->hwtid_idr, count_idrs, &count); | |
685 | idr_for_each(&epd->devp->atid_idr, count_idrs, &count); | |
686 | idr_for_each(&epd->devp->stid_idr, count_idrs, &count); | |
687 | spin_unlock_irq(&epd->devp->lock); | |
688 | ||
63a71ba6 | 689 | epd->bufsize = count * 240; |
793dad94 VP |
690 | epd->buf = vmalloc(epd->bufsize); |
691 | if (!epd->buf) { | |
692 | ret = -ENOMEM; | |
693 | goto err1; | |
694 | } | |
695 | ||
696 | spin_lock_irq(&epd->devp->lock); | |
697 | idr_for_each(&epd->devp->hwtid_idr, dump_ep, epd); | |
698 | idr_for_each(&epd->devp->atid_idr, dump_ep, epd); | |
699 | idr_for_each(&epd->devp->stid_idr, dump_listen_ep, epd); | |
700 | spin_unlock_irq(&epd->devp->lock); | |
701 | ||
702 | file->private_data = epd; | |
703 | goto out; | |
704 | err1: | |
705 | kfree(epd); | |
706 | out: | |
707 | return ret; | |
708 | } | |
709 | ||
710 | static const struct file_operations ep_debugfs_fops = { | |
711 | .owner = THIS_MODULE, | |
712 | .open = ep_open, | |
713 | .release = ep_release, | |
714 | .read = debugfs_read, | |
715 | }; | |
716 | ||
cfdda9d7 SW |
717 | static int setup_debugfs(struct c4iw_dev *devp) |
718 | { | |
cfdda9d7 SW |
719 | if (!devp->debugfs_root) |
720 | return -1; | |
721 | ||
e59b4e91 DH |
722 | debugfs_create_file_size("qps", S_IWUSR, devp->debugfs_root, |
723 | (void *)devp, &qp_debugfs_fops, 4096); | |
724 | ||
725 | debugfs_create_file_size("stags", S_IWUSR, devp->debugfs_root, | |
726 | (void *)devp, &stag_debugfs_fops, 4096); | |
727 | ||
728 | debugfs_create_file_size("stats", S_IWUSR, devp->debugfs_root, | |
729 | (void *)devp, &stats_debugfs_fops, 4096); | |
730 | ||
731 | debugfs_create_file_size("eps", S_IWUSR, devp->debugfs_root, | |
732 | (void *)devp, &ep_debugfs_fops, 4096); | |
733 | ||
734 | if (c4iw_wr_log) | |
735 | debugfs_create_file_size("wr_log", S_IWUSR, devp->debugfs_root, | |
736 | (void *)devp, &wr_log_debugfs_fops, 4096); | |
cfdda9d7 SW |
737 | return 0; |
738 | } | |
739 | ||
740 | void c4iw_release_dev_ucontext(struct c4iw_rdev *rdev, | |
741 | struct c4iw_dev_ucontext *uctx) | |
742 | { | |
743 | struct list_head *pos, *nxt; | |
744 | struct c4iw_qid_list *entry; | |
745 | ||
746 | mutex_lock(&uctx->lock); | |
747 | list_for_each_safe(pos, nxt, &uctx->qpids) { | |
748 | entry = list_entry(pos, struct c4iw_qid_list, entry); | |
749 | list_del_init(&entry->entry); | |
8d81ef34 | 750 | if (!(entry->qid & rdev->qpmask)) { |
ec3eead2 VP |
751 | c4iw_put_resource(&rdev->resource.qid_table, |
752 | entry->qid); | |
8d81ef34 VP |
753 | mutex_lock(&rdev->stats.lock); |
754 | rdev->stats.qid.cur -= rdev->qpmask + 1; | |
755 | mutex_unlock(&rdev->stats.lock); | |
756 | } | |
cfdda9d7 SW |
757 | kfree(entry); |
758 | } | |
759 | ||
d4702645 | 760 | list_for_each_safe(pos, nxt, &uctx->cqids) { |
cfdda9d7 SW |
761 | entry = list_entry(pos, struct c4iw_qid_list, entry); |
762 | list_del_init(&entry->entry); | |
763 | kfree(entry); | |
764 | } | |
765 | mutex_unlock(&uctx->lock); | |
766 | } | |
767 | ||
768 | void c4iw_init_dev_ucontext(struct c4iw_rdev *rdev, | |
769 | struct c4iw_dev_ucontext *uctx) | |
770 | { | |
771 | INIT_LIST_HEAD(&uctx->qpids); | |
772 | INIT_LIST_HEAD(&uctx->cqids); | |
773 | mutex_init(&uctx->lock); | |
774 | } | |
775 | ||
776 | /* Caller takes care of locking if needed */ | |
777 | static int c4iw_rdev_open(struct c4iw_rdev *rdev) | |
778 | { | |
779 | int err; | |
780 | ||
781 | c4iw_init_dev_ucontext(rdev, &rdev->uctx); | |
782 | ||
4a75a86c H |
783 | /* |
784 | * This implementation assumes udb_density == ucq_density! Eventually | |
785 | * we might need to support this but for now fail the open. Also the | |
786 | * cqid and qpid range must match for now. | |
787 | */ | |
788 | if (rdev->lldi.udb_density != rdev->lldi.ucq_density) { | |
700456bd | 789 | pr_err("%s: unsupported udb/ucq densities %u/%u\n", |
4a75a86c H |
790 | pci_name(rdev->lldi.pdev), rdev->lldi.udb_density, |
791 | rdev->lldi.ucq_density); | |
4275a5b2 | 792 | return -EINVAL; |
4a75a86c H |
793 | } |
794 | if (rdev->lldi.vr->qp.start != rdev->lldi.vr->cq.start || | |
795 | rdev->lldi.vr->qp.size != rdev->lldi.vr->cq.size) { | |
700456bd | 796 | pr_err("%s: unsupported qp and cq id ranges qp start %u size %u cq start %u size %u\n", |
4a75a86c H |
797 | pci_name(rdev->lldi.pdev), rdev->lldi.vr->qp.start, |
798 | rdev->lldi.vr->qp.size, rdev->lldi.vr->cq.size, | |
799 | rdev->lldi.vr->cq.size); | |
4275a5b2 | 800 | return -EINVAL; |
4a75a86c H |
801 | } |
802 | ||
cfdda9d7 | 803 | rdev->qpmask = rdev->lldi.udb_density - 1; |
cfdda9d7 | 804 | rdev->cqmask = rdev->lldi.ucq_density - 1; |
548ddb19 BP |
805 | pr_debug("dev %s stag start 0x%0x size 0x%0x num stags %d pbl start 0x%0x size 0x%0x rq start 0x%0x size 0x%0x qp qid start %u size %u cq qid start %u size %u\n", |
806 | pci_name(rdev->lldi.pdev), rdev->lldi.vr->stag.start, | |
a9a42886 JP |
807 | rdev->lldi.vr->stag.size, c4iw_num_stags(rdev), |
808 | rdev->lldi.vr->pbl.start, | |
809 | rdev->lldi.vr->pbl.size, rdev->lldi.vr->rq.start, | |
810 | rdev->lldi.vr->rq.size, | |
811 | rdev->lldi.vr->qp.start, | |
812 | rdev->lldi.vr->qp.size, | |
813 | rdev->lldi.vr->cq.start, | |
814 | rdev->lldi.vr->cq.size); | |
815 | pr_debug("udb %pR db_reg %p gts_reg %p qpmask 0x%x cqmask 0x%x\n", | |
816 | &rdev->lldi.pdev->resource[2], | |
817 | rdev->lldi.db_reg, rdev->lldi.gts_reg, | |
818 | rdev->qpmask, rdev->cqmask); | |
cfdda9d7 | 819 | |
4275a5b2 H |
820 | if (c4iw_num_stags(rdev) == 0) |
821 | return -EINVAL; | |
cfdda9d7 | 822 | |
8d81ef34 VP |
823 | rdev->stats.pd.total = T4_MAX_NUM_PD; |
824 | rdev->stats.stag.total = rdev->lldi.vr->stag.size; | |
825 | rdev->stats.pbl.total = rdev->lldi.vr->pbl.size; | |
826 | rdev->stats.rqt.total = rdev->lldi.vr->rq.size; | |
827 | rdev->stats.ocqp.total = rdev->lldi.vr->ocq.size; | |
828 | rdev->stats.qid.total = rdev->lldi.vr->qp.size; | |
829 | ||
cfdda9d7 SW |
830 | err = c4iw_init_resource(rdev, c4iw_num_stags(rdev), T4_MAX_NUM_PD); |
831 | if (err) { | |
700456bd | 832 | pr_err("error %d initializing resources\n", err); |
4275a5b2 | 833 | return err; |
cfdda9d7 SW |
834 | } |
835 | err = c4iw_pblpool_create(rdev); | |
836 | if (err) { | |
700456bd | 837 | pr_err("error %d initializing pbl pool\n", err); |
4275a5b2 | 838 | goto destroy_resource; |
cfdda9d7 SW |
839 | } |
840 | err = c4iw_rqtpool_create(rdev); | |
841 | if (err) { | |
700456bd | 842 | pr_err("error %d initializing rqt pool\n", err); |
4275a5b2 | 843 | goto destroy_pblpool; |
cfdda9d7 | 844 | } |
c6d7b267 SW |
845 | err = c4iw_ocqp_pool_create(rdev); |
846 | if (err) { | |
700456bd | 847 | pr_err("error %d initializing ocqp pool\n", err); |
4275a5b2 | 848 | goto destroy_rqtpool; |
c6d7b267 | 849 | } |
05eb2389 SW |
850 | rdev->status_page = (struct t4_dev_status_page *) |
851 | __get_free_page(GFP_KERNEL); | |
15f7e3c2 WY |
852 | if (!rdev->status_page) { |
853 | err = -ENOMEM; | |
82b1df1b | 854 | goto destroy_ocqp_pool; |
15f7e3c2 | 855 | } |
c5dfb000 H |
856 | rdev->status_page->qp_start = rdev->lldi.vr->qp.start; |
857 | rdev->status_page->qp_size = rdev->lldi.vr->qp.size; | |
858 | rdev->status_page->cq_start = rdev->lldi.vr->cq.start; | |
859 | rdev->status_page->cq_size = rdev->lldi.vr->cq.size; | |
8fd90bb8 | 860 | |
7730b4c7 HS |
861 | if (c4iw_wr_log) { |
862 | rdev->wr_log = kzalloc((1 << c4iw_wr_log_size_order) * | |
863 | sizeof(*rdev->wr_log), GFP_KERNEL); | |
864 | if (rdev->wr_log) { | |
865 | rdev->wr_log_size = 1 << c4iw_wr_log_size_order; | |
866 | atomic_set(&rdev->wr_log_idx, 0); | |
7730b4c7 HS |
867 | } |
868 | } | |
8fd90bb8 | 869 | |
c12a67fe SW |
870 | rdev->free_workq = create_singlethread_workqueue("iw_cxgb4_free"); |
871 | if (!rdev->free_workq) { | |
872 | err = -ENOMEM; | |
d4702645 | 873 | goto err_free_status_page_and_wr_log; |
c12a67fe SW |
874 | } |
875 | ||
6b54d54d | 876 | rdev->status_page->db_off = 0; |
8fd90bb8 | 877 | |
26bff1bd RR |
878 | init_completion(&rdev->rqt_compl); |
879 | init_completion(&rdev->pbl_compl); | |
880 | kref_init(&rdev->rqt_kref); | |
881 | kref_init(&rdev->pbl_kref); | |
882 | ||
cfdda9d7 | 883 | return 0; |
d4702645 RR |
884 | err_free_status_page_and_wr_log: |
885 | if (c4iw_wr_log && rdev->wr_log) | |
886 | kfree(rdev->wr_log); | |
c12a67fe | 887 | free_page((unsigned long)rdev->status_page); |
82b1df1b H |
888 | destroy_ocqp_pool: |
889 | c4iw_ocqp_pool_destroy(rdev); | |
4275a5b2 | 890 | destroy_rqtpool: |
c6d7b267 | 891 | c4iw_rqtpool_destroy(rdev); |
4275a5b2 | 892 | destroy_pblpool: |
cfdda9d7 | 893 | c4iw_pblpool_destroy(rdev); |
4275a5b2 | 894 | destroy_resource: |
cfdda9d7 | 895 | c4iw_destroy_resource(&rdev->resource); |
cfdda9d7 SW |
896 | return err; |
897 | } | |
898 | ||
899 | static void c4iw_rdev_close(struct c4iw_rdev *rdev) | |
900 | { | |
7730b4c7 | 901 | kfree(rdev->wr_log); |
d4702645 | 902 | c4iw_release_dev_ucontext(rdev, &rdev->uctx); |
05eb2389 | 903 | free_page((unsigned long)rdev->status_page); |
cfdda9d7 SW |
904 | c4iw_pblpool_destroy(rdev); |
905 | c4iw_rqtpool_destroy(rdev); | |
26bff1bd RR |
906 | wait_for_completion(&rdev->pbl_compl); |
907 | wait_for_completion(&rdev->rqt_compl); | |
d4702645 | 908 | c4iw_ocqp_pool_destroy(rdev); |
26bff1bd | 909 | destroy_workqueue(rdev->free_workq); |
cfdda9d7 SW |
910 | c4iw_destroy_resource(&rdev->resource); |
911 | } | |
912 | ||
1c8f1da5 | 913 | void c4iw_dealloc(struct uld_ctx *ctx) |
cfdda9d7 | 914 | { |
2f25e9a5 | 915 | c4iw_rdev_close(&ctx->dev->rdev); |
37eb816c | 916 | WARN_ON_ONCE(!idr_is_empty(&ctx->dev->cqidr)); |
2f25e9a5 | 917 | idr_destroy(&ctx->dev->cqidr); |
37eb816c | 918 | WARN_ON_ONCE(!idr_is_empty(&ctx->dev->qpidr)); |
2f25e9a5 | 919 | idr_destroy(&ctx->dev->qpidr); |
37eb816c | 920 | WARN_ON_ONCE(!idr_is_empty(&ctx->dev->mmidr)); |
2f25e9a5 | 921 | idr_destroy(&ctx->dev->mmidr); |
37eb816c | 922 | wait_event(ctx->dev->wait, idr_is_empty(&ctx->dev->hwtid_idr)); |
793dad94 VP |
923 | idr_destroy(&ctx->dev->hwtid_idr); |
924 | idr_destroy(&ctx->dev->stid_idr); | |
925 | idr_destroy(&ctx->dev->atid_idr); | |
fa658a98 SW |
926 | if (ctx->dev->rdev.bar2_kva) |
927 | iounmap(ctx->dev->rdev.bar2_kva); | |
928 | if (ctx->dev->rdev.oc_mw_kva) | |
929 | iounmap(ctx->dev->rdev.oc_mw_kva); | |
2f25e9a5 SW |
930 | ib_dealloc_device(&ctx->dev->ibdev); |
931 | ctx->dev = NULL; | |
cfdda9d7 SW |
932 | } |
933 | ||
9efe10a1 SW |
934 | static void c4iw_remove(struct uld_ctx *ctx) |
935 | { | |
548ddb19 | 936 | pr_debug("c4iw_dev %p\n", ctx->dev); |
9efe10a1 SW |
937 | c4iw_unregister_device(ctx->dev); |
938 | c4iw_dealloc(ctx); | |
939 | } | |
940 | ||
941 | static int rdma_supported(const struct cxgb4_lld_info *infop) | |
942 | { | |
943 | return infop->vr->stag.size > 0 && infop->vr->pbl.size > 0 && | |
944 | infop->vr->rq.size > 0 && infop->vr->qp.size > 0 && | |
f079af7a | 945 | infop->vr->cq.size > 0; |
9efe10a1 SW |
946 | } |
947 | ||
cfdda9d7 SW |
948 | static struct c4iw_dev *c4iw_alloc(const struct cxgb4_lld_info *infop) |
949 | { | |
950 | struct c4iw_dev *devp; | |
951 | int ret; | |
952 | ||
9efe10a1 | 953 | if (!rdma_supported(infop)) { |
700456bd JP |
954 | pr_info("%s: RDMA not supported on this device\n", |
955 | pci_name(infop->pdev)); | |
9efe10a1 SW |
956 | return ERR_PTR(-ENOSYS); |
957 | } | |
f079af7a | 958 | if (!ocqp_supported(infop)) |
700456bd | 959 | pr_info("%s: On-Chip Queues not supported on this device\n", |
f079af7a | 960 | pci_name(infop->pdev)); |
80ccdd60 | 961 | |
cfdda9d7 SW |
962 | devp = (struct c4iw_dev *)ib_alloc_device(sizeof(*devp)); |
963 | if (!devp) { | |
700456bd | 964 | pr_err("Cannot allocate ib device\n"); |
bbe9a0a2 | 965 | return ERR_PTR(-ENOMEM); |
cfdda9d7 SW |
966 | } |
967 | devp->rdev.lldi = *infop; | |
968 | ||
04e10e21 | 969 | /* init various hw-queue params based on lld info */ |
548ddb19 BP |
970 | pr_debug("Ing. padding boundary is %d, egrsstatuspagesize = %d\n", |
971 | devp->rdev.lldi.sge_ingpadboundary, | |
a9a42886 | 972 | devp->rdev.lldi.sge_egrstatuspagesize); |
04e10e21 HS |
973 | |
974 | devp->rdev.hw_queue.t4_eq_status_entries = | |
4bbfabed | 975 | devp->rdev.lldi.sge_egrstatuspagesize / 64; |
66eb19af HS |
976 | devp->rdev.hw_queue.t4_max_eq_size = 65520; |
977 | devp->rdev.hw_queue.t4_max_iq_size = 65520; | |
978 | devp->rdev.hw_queue.t4_max_rq_size = 8192 - | |
979 | devp->rdev.hw_queue.t4_eq_status_entries - 1; | |
04e10e21 | 980 | devp->rdev.hw_queue.t4_max_sq_size = |
66eb19af HS |
981 | devp->rdev.hw_queue.t4_max_eq_size - |
982 | devp->rdev.hw_queue.t4_eq_status_entries - 1; | |
04e10e21 | 983 | devp->rdev.hw_queue.t4_max_qp_depth = |
66eb19af | 984 | devp->rdev.hw_queue.t4_max_rq_size; |
04e10e21 | 985 | devp->rdev.hw_queue.t4_max_cq_depth = |
66eb19af | 986 | devp->rdev.hw_queue.t4_max_iq_size - 2; |
04e10e21 HS |
987 | devp->rdev.hw_queue.t4_stat_len = |
988 | devp->rdev.lldi.sge_egrstatuspagesize; | |
989 | ||
fa658a98 | 990 | /* |
963cab50 | 991 | * For T5/T6 devices, we map all of BAR2 with WC. |
fa658a98 SW |
992 | * For T4 devices with onchip qp mem, we map only that part |
993 | * of BAR2 with WC. | |
994 | */ | |
995 | devp->rdev.bar2_pa = pci_resource_start(devp->rdev.lldi.pdev, 2); | |
963cab50 | 996 | if (!is_t4(devp->rdev.lldi.adapter_type)) { |
fa658a98 SW |
997 | devp->rdev.bar2_kva = ioremap_wc(devp->rdev.bar2_pa, |
998 | pci_resource_len(devp->rdev.lldi.pdev, 2)); | |
999 | if (!devp->rdev.bar2_kva) { | |
700456bd | 1000 | pr_err("Unable to ioremap BAR2\n"); |
65b302ad | 1001 | ib_dealloc_device(&devp->ibdev); |
fa658a98 SW |
1002 | return ERR_PTR(-EINVAL); |
1003 | } | |
1004 | } else if (ocqp_supported(infop)) { | |
1005 | devp->rdev.oc_mw_pa = | |
1006 | pci_resource_start(devp->rdev.lldi.pdev, 2) + | |
1007 | pci_resource_len(devp->rdev.lldi.pdev, 2) - | |
1008 | roundup_pow_of_two(devp->rdev.lldi.vr->ocq.size); | |
1009 | devp->rdev.oc_mw_kva = ioremap_wc(devp->rdev.oc_mw_pa, | |
1010 | devp->rdev.lldi.vr->ocq.size); | |
1011 | if (!devp->rdev.oc_mw_kva) { | |
700456bd | 1012 | pr_err("Unable to ioremap onchip mem\n"); |
65b302ad | 1013 | ib_dealloc_device(&devp->ibdev); |
fa658a98 SW |
1014 | return ERR_PTR(-EINVAL); |
1015 | } | |
1016 | } | |
c6d7b267 | 1017 | |
a9a42886 JP |
1018 | pr_debug("ocq memory: hw_start 0x%x size %u mw_pa 0x%lx mw_kva %p\n", |
1019 | devp->rdev.lldi.vr->ocq.start, devp->rdev.lldi.vr->ocq.size, | |
1020 | devp->rdev.oc_mw_pa, devp->rdev.oc_mw_kva); | |
c6d7b267 | 1021 | |
cfdda9d7 SW |
1022 | ret = c4iw_rdev_open(&devp->rdev); |
1023 | if (ret) { | |
700456bd | 1024 | pr_err("Unable to open CXIO rdev err %d\n", ret); |
cfdda9d7 | 1025 | ib_dealloc_device(&devp->ibdev); |
bbe9a0a2 | 1026 | return ERR_PTR(ret); |
cfdda9d7 SW |
1027 | } |
1028 | ||
1029 | idr_init(&devp->cqidr); | |
1030 | idr_init(&devp->qpidr); | |
1031 | idr_init(&devp->mmidr); | |
793dad94 VP |
1032 | idr_init(&devp->hwtid_idr); |
1033 | idr_init(&devp->stid_idr); | |
1034 | idr_init(&devp->atid_idr); | |
cfdda9d7 | 1035 | spin_lock_init(&devp->lock); |
8d81ef34 | 1036 | mutex_init(&devp->rdev.stats.lock); |
2c974781 | 1037 | mutex_init(&devp->db_mutex); |
05eb2389 | 1038 | INIT_LIST_HEAD(&devp->db_fc_list); |
37eb816c | 1039 | init_waitqueue_head(&devp->wait); |
4c2c5763 | 1040 | devp->avail_ird = devp->rdev.lldi.max_ird_adapter; |
cfdda9d7 | 1041 | |
cfdda9d7 SW |
1042 | if (c4iw_debugfs_root) { |
1043 | devp->debugfs_root = debugfs_create_dir( | |
1044 | pci_name(devp->rdev.lldi.pdev), | |
1045 | c4iw_debugfs_root); | |
1046 | setup_debugfs(devp); | |
1047 | } | |
9eccfe10 | 1048 | |
9eccfe10 | 1049 | |
cfdda9d7 SW |
1050 | return devp; |
1051 | } | |
1052 | ||
1053 | static void *c4iw_uld_add(const struct cxgb4_lld_info *infop) | |
1054 | { | |
2f25e9a5 | 1055 | struct uld_ctx *ctx; |
cfdda9d7 SW |
1056 | static int vers_printed; |
1057 | int i; | |
1058 | ||
1059 | if (!vers_printed++) | |
f079af7a VP |
1060 | pr_info("Chelsio T4/T5 RDMA Driver - version %s\n", |
1061 | DRV_VERSION); | |
cfdda9d7 | 1062 | |
2f25e9a5 SW |
1063 | ctx = kzalloc(sizeof *ctx, GFP_KERNEL); |
1064 | if (!ctx) { | |
1065 | ctx = ERR_PTR(-ENOMEM); | |
cfdda9d7 | 1066 | goto out; |
2f25e9a5 SW |
1067 | } |
1068 | ctx->lldi = *infop; | |
cfdda9d7 | 1069 | |
548ddb19 BP |
1070 | pr_debug("found device %s nchan %u nrxq %u ntxq %u nports %u\n", |
1071 | pci_name(ctx->lldi.pdev), | |
a9a42886 JP |
1072 | ctx->lldi.nchan, ctx->lldi.nrxq, |
1073 | ctx->lldi.ntxq, ctx->lldi.nports); | |
2f25e9a5 SW |
1074 | |
1075 | mutex_lock(&dev_mutex); | |
1076 | list_add_tail(&ctx->entry, &uld_ctx_list); | |
1077 | mutex_unlock(&dev_mutex); | |
cfdda9d7 | 1078 | |
2f25e9a5 | 1079 | for (i = 0; i < ctx->lldi.nrxq; i++) |
a9a42886 | 1080 | pr_debug("rxqid[%u] %u\n", i, ctx->lldi.rxq_ids[i]); |
cfdda9d7 | 1081 | out: |
2f25e9a5 | 1082 | return ctx; |
cfdda9d7 SW |
1083 | } |
1084 | ||
1cab775c VP |
1085 | static inline struct sk_buff *copy_gl_to_skb_pkt(const struct pkt_gl *gl, |
1086 | const __be64 *rsp, | |
1087 | u32 pktshift) | |
1088 | { | |
1089 | struct sk_buff *skb; | |
1090 | ||
1091 | /* | |
1092 | * Allocate space for cpl_pass_accept_req which will be synthesized by | |
1093 | * driver. Once the driver synthesizes the request the skb will go | |
1094 | * through the regular cpl_pass_accept_req processing. | |
1095 | * The math here assumes sizeof cpl_pass_accept_req >= sizeof | |
1096 | * cpl_rx_pkt. | |
1097 | */ | |
1098 | skb = alloc_skb(gl->tot_len + sizeof(struct cpl_pass_accept_req) + | |
1099 | sizeof(struct rss_header) - pktshift, GFP_ATOMIC); | |
1100 | if (unlikely(!skb)) | |
1101 | return NULL; | |
1102 | ||
70d72568 BVA |
1103 | __skb_put(skb, gl->tot_len + sizeof(struct cpl_pass_accept_req) + |
1104 | sizeof(struct rss_header) - pktshift); | |
1cab775c VP |
1105 | |
1106 | /* | |
1107 | * This skb will contain: | |
1108 | * rss_header from the rspq descriptor (1 flit) | |
1109 | * cpl_rx_pkt struct from the rspq descriptor (2 flits) | |
1110 | * space for the difference between the size of an | |
1111 | * rx_pkt and pass_accept_req cpl (1 flit) | |
1112 | * the packet data from the gl | |
1113 | */ | |
1114 | skb_copy_to_linear_data(skb, rsp, sizeof(struct cpl_pass_accept_req) + | |
1115 | sizeof(struct rss_header)); | |
1116 | skb_copy_to_linear_data_offset(skb, sizeof(struct rss_header) + | |
1117 | sizeof(struct cpl_pass_accept_req), | |
1118 | gl->va + pktshift, | |
1119 | gl->tot_len - pktshift); | |
1120 | return skb; | |
1121 | } | |
1122 | ||
1123 | static inline int recv_rx_pkt(struct c4iw_dev *dev, const struct pkt_gl *gl, | |
1124 | const __be64 *rsp) | |
1125 | { | |
1126 | unsigned int opcode = *(u8 *)rsp; | |
1127 | struct sk_buff *skb; | |
1128 | ||
1129 | if (opcode != CPL_RX_PKT) | |
1130 | goto out; | |
1131 | ||
1132 | skb = copy_gl_to_skb_pkt(gl , rsp, dev->rdev.lldi.sge_pktshift); | |
1133 | if (skb == NULL) | |
1134 | goto out; | |
1135 | ||
1136 | if (c4iw_handlers[opcode] == NULL) { | |
700456bd | 1137 | pr_info("%s no handler opcode 0x%x...\n", __func__, opcode); |
1cab775c VP |
1138 | kfree_skb(skb); |
1139 | goto out; | |
1140 | } | |
1141 | c4iw_handlers[opcode](dev, skb); | |
1142 | return 1; | |
1143 | out: | |
1144 | return 0; | |
1145 | } | |
1146 | ||
cfdda9d7 SW |
1147 | static int c4iw_uld_rx_handler(void *handle, const __be64 *rsp, |
1148 | const struct pkt_gl *gl) | |
1149 | { | |
2f25e9a5 SW |
1150 | struct uld_ctx *ctx = handle; |
1151 | struct c4iw_dev *dev = ctx->dev; | |
cfdda9d7 | 1152 | struct sk_buff *skb; |
1cab775c | 1153 | u8 opcode; |
cfdda9d7 SW |
1154 | |
1155 | if (gl == NULL) { | |
1156 | /* omit RSS and rsp_ctrl at end of descriptor */ | |
1157 | unsigned int len = 64 - sizeof(struct rsp_ctrl) - 8; | |
1158 | ||
1159 | skb = alloc_skb(256, GFP_ATOMIC); | |
1160 | if (!skb) | |
1161 | goto nomem; | |
1162 | __skb_put(skb, len); | |
1163 | skb_copy_to_linear_data(skb, &rsp[1], len); | |
1164 | } else if (gl == CXGB4_MSG_AN) { | |
1165 | const struct rsp_ctrl *rc = (void *)rsp; | |
1166 | ||
1167 | u32 qid = be32_to_cpu(rc->pldbuflen_qid); | |
1168 | c4iw_ev_handler(dev, qid); | |
1cab775c VP |
1169 | return 0; |
1170 | } else if (unlikely(*(u8 *)rsp != *(u8 *)gl->va)) { | |
1171 | if (recv_rx_pkt(dev, gl, rsp)) | |
1172 | return 0; | |
1173 | ||
700456bd JP |
1174 | pr_info("%s: unexpected FL contents at %p, RSS %#llx, FL %#llx, len %u\n", |
1175 | pci_name(ctx->lldi.pdev), gl->va, | |
1176 | be64_to_cpu(*rsp), | |
1177 | be64_to_cpu(*(__force __be64 *)gl->va), | |
1178 | gl->tot_len); | |
1cab775c | 1179 | |
cfdda9d7 SW |
1180 | return 0; |
1181 | } else { | |
da411ba1 | 1182 | skb = cxgb4_pktgl_to_skb(gl, 128, 128); |
cfdda9d7 SW |
1183 | if (unlikely(!skb)) |
1184 | goto nomem; | |
1185 | } | |
1186 | ||
1cab775c | 1187 | opcode = *(u8 *)rsp; |
dbb084cc | 1188 | if (c4iw_handlers[opcode]) { |
cfdda9d7 | 1189 | c4iw_handlers[opcode](dev, skb); |
dbb084cc | 1190 | } else { |
700456bd | 1191 | pr_info("%s no handler opcode 0x%x...\n", __func__, opcode); |
dbb084cc SW |
1192 | kfree_skb(skb); |
1193 | } | |
cfdda9d7 SW |
1194 | |
1195 | return 0; | |
1196 | nomem: | |
1197 | return -1; | |
1198 | } | |
1199 | ||
1200 | static int c4iw_uld_state_change(void *handle, enum cxgb4_state new_state) | |
1201 | { | |
2f25e9a5 | 1202 | struct uld_ctx *ctx = handle; |
1c01c538 | 1203 | |
548ddb19 | 1204 | pr_debug("new_state %u\n", new_state); |
1c01c538 SW |
1205 | switch (new_state) { |
1206 | case CXGB4_STATE_UP: | |
700456bd | 1207 | pr_info("%s: Up\n", pci_name(ctx->lldi.pdev)); |
2f25e9a5 | 1208 | if (!ctx->dev) { |
2f25e9a5 | 1209 | ctx->dev = c4iw_alloc(&ctx->lldi); |
9efe10a1 | 1210 | if (IS_ERR(ctx->dev)) { |
700456bd | 1211 | pr_err("%s: initialization failed: %ld\n", |
9efe10a1 SW |
1212 | pci_name(ctx->lldi.pdev), |
1213 | PTR_ERR(ctx->dev)); | |
1214 | ctx->dev = NULL; | |
1215 | break; | |
1216 | } | |
1c8f1da5 BP |
1217 | |
1218 | INIT_WORK(&ctx->reg_work, c4iw_register_device); | |
1219 | queue_work(reg_workq, &ctx->reg_work); | |
1c01c538 SW |
1220 | } |
1221 | break; | |
1222 | case CXGB4_STATE_DOWN: | |
700456bd | 1223 | pr_info("%s: Down\n", pci_name(ctx->lldi.pdev)); |
2f25e9a5 SW |
1224 | if (ctx->dev) |
1225 | c4iw_remove(ctx); | |
1c01c538 | 1226 | break; |
8b7372c1 | 1227 | case CXGB4_STATE_FATAL_ERROR: |
1c01c538 | 1228 | case CXGB4_STATE_START_RECOVERY: |
700456bd | 1229 | pr_info("%s: Fatal Error\n", pci_name(ctx->lldi.pdev)); |
2f25e9a5 | 1230 | if (ctx->dev) { |
767fbe81 SW |
1231 | struct ib_event event; |
1232 | ||
2f25e9a5 | 1233 | ctx->dev->rdev.flags |= T4_FATAL_ERROR; |
767fbe81 SW |
1234 | memset(&event, 0, sizeof event); |
1235 | event.event = IB_EVENT_DEVICE_FATAL; | |
2f25e9a5 | 1236 | event.device = &ctx->dev->ibdev; |
767fbe81 | 1237 | ib_dispatch_event(&event); |
2f25e9a5 | 1238 | c4iw_remove(ctx); |
767fbe81 | 1239 | } |
1c01c538 SW |
1240 | break; |
1241 | case CXGB4_STATE_DETACH: | |
700456bd | 1242 | pr_info("%s: Detach\n", pci_name(ctx->lldi.pdev)); |
2f25e9a5 SW |
1243 | if (ctx->dev) |
1244 | c4iw_remove(ctx); | |
1c01c538 SW |
1245 | break; |
1246 | } | |
cfdda9d7 SW |
1247 | return 0; |
1248 | } | |
1249 | ||
2c974781 VP |
1250 | static int disable_qp_db(int id, void *p, void *data) |
1251 | { | |
1252 | struct c4iw_qp *qp = p; | |
1253 | ||
1254 | t4_disable_wq_db(&qp->wq); | |
1255 | return 0; | |
1256 | } | |
1257 | ||
1258 | static void stop_queues(struct uld_ctx *ctx) | |
1259 | { | |
05eb2389 SW |
1260 | unsigned long flags; |
1261 | ||
1262 | spin_lock_irqsave(&ctx->dev->lock, flags); | |
1263 | ctx->dev->rdev.stats.db_state_transitions++; | |
1264 | ctx->dev->db_state = STOPPED; | |
1265 | if (ctx->dev->rdev.flags & T4_STATUS_PAGE_DISABLED) | |
422eea0a | 1266 | idr_for_each(&ctx->dev->qpidr, disable_qp_db, NULL); |
05eb2389 SW |
1267 | else |
1268 | ctx->dev->rdev.status_page->db_off = 1; | |
1269 | spin_unlock_irqrestore(&ctx->dev->lock, flags); | |
2c974781 VP |
1270 | } |
1271 | ||
1272 | static int enable_qp_db(int id, void *p, void *data) | |
1273 | { | |
1274 | struct c4iw_qp *qp = p; | |
1275 | ||
1276 | t4_enable_wq_db(&qp->wq); | |
1277 | return 0; | |
1278 | } | |
1279 | ||
05eb2389 SW |
1280 | static void resume_rc_qp(struct c4iw_qp *qp) |
1281 | { | |
1282 | spin_lock(&qp->lock); | |
963cab50 | 1283 | t4_ring_sq_db(&qp->wq, qp->wq.sq.wq_pidx_inc, NULL); |
05eb2389 | 1284 | qp->wq.sq.wq_pidx_inc = 0; |
963cab50 | 1285 | t4_ring_rq_db(&qp->wq, qp->wq.rq.wq_pidx_inc, NULL); |
05eb2389 SW |
1286 | qp->wq.rq.wq_pidx_inc = 0; |
1287 | spin_unlock(&qp->lock); | |
1288 | } | |
1289 | ||
1290 | static void resume_a_chunk(struct uld_ctx *ctx) | |
1291 | { | |
1292 | int i; | |
1293 | struct c4iw_qp *qp; | |
1294 | ||
1295 | for (i = 0; i < DB_FC_RESUME_SIZE; i++) { | |
1296 | qp = list_first_entry(&ctx->dev->db_fc_list, struct c4iw_qp, | |
1297 | db_fc_entry); | |
1298 | list_del_init(&qp->db_fc_entry); | |
1299 | resume_rc_qp(qp); | |
1300 | if (list_empty(&ctx->dev->db_fc_list)) | |
1301 | break; | |
1302 | } | |
1303 | } | |
1304 | ||
2c974781 VP |
1305 | static void resume_queues(struct uld_ctx *ctx) |
1306 | { | |
1307 | spin_lock_irq(&ctx->dev->lock); | |
05eb2389 SW |
1308 | if (ctx->dev->db_state != STOPPED) |
1309 | goto out; | |
1310 | ctx->dev->db_state = FLOW_CONTROL; | |
1311 | while (1) { | |
1312 | if (list_empty(&ctx->dev->db_fc_list)) { | |
1313 | WARN_ON(ctx->dev->db_state != FLOW_CONTROL); | |
1314 | ctx->dev->db_state = NORMAL; | |
1315 | ctx->dev->rdev.stats.db_state_transitions++; | |
1316 | if (ctx->dev->rdev.flags & T4_STATUS_PAGE_DISABLED) { | |
1317 | idr_for_each(&ctx->dev->qpidr, enable_qp_db, | |
1318 | NULL); | |
1319 | } else { | |
1320 | ctx->dev->rdev.status_page->db_off = 0; | |
1321 | } | |
1322 | break; | |
1323 | } else { | |
1324 | if (cxgb4_dbfifo_count(ctx->dev->rdev.lldi.ports[0], 1) | |
1325 | < (ctx->dev->rdev.lldi.dbfifo_int_thresh << | |
1326 | DB_FC_DRAIN_THRESH)) { | |
1327 | resume_a_chunk(ctx); | |
1328 | } | |
1329 | if (!list_empty(&ctx->dev->db_fc_list)) { | |
1330 | spin_unlock_irq(&ctx->dev->lock); | |
1331 | if (DB_FC_RESUME_DELAY) { | |
1332 | set_current_state(TASK_UNINTERRUPTIBLE); | |
1333 | schedule_timeout(DB_FC_RESUME_DELAY); | |
1334 | } | |
1335 | spin_lock_irq(&ctx->dev->lock); | |
1336 | if (ctx->dev->db_state != FLOW_CONTROL) | |
1337 | break; | |
1338 | } | |
1339 | } | |
422eea0a | 1340 | } |
05eb2389 SW |
1341 | out: |
1342 | if (ctx->dev->db_state != NORMAL) | |
1343 | ctx->dev->rdev.stats.db_fc_interruptions++; | |
422eea0a VP |
1344 | spin_unlock_irq(&ctx->dev->lock); |
1345 | } | |
1346 | ||
1347 | struct qp_list { | |
1348 | unsigned idx; | |
1349 | struct c4iw_qp **qps; | |
1350 | }; | |
1351 | ||
1352 | static int add_and_ref_qp(int id, void *p, void *data) | |
1353 | { | |
1354 | struct qp_list *qp_listp = data; | |
1355 | struct c4iw_qp *qp = p; | |
1356 | ||
1357 | c4iw_qp_add_ref(&qp->ibqp); | |
1358 | qp_listp->qps[qp_listp->idx++] = qp; | |
1359 | return 0; | |
1360 | } | |
1361 | ||
1362 | static int count_qps(int id, void *p, void *data) | |
1363 | { | |
1364 | unsigned *countp = data; | |
1365 | (*countp)++; | |
1366 | return 0; | |
1367 | } | |
1368 | ||
05eb2389 | 1369 | static void deref_qps(struct qp_list *qp_list) |
422eea0a VP |
1370 | { |
1371 | int idx; | |
1372 | ||
05eb2389 SW |
1373 | for (idx = 0; idx < qp_list->idx; idx++) |
1374 | c4iw_qp_rem_ref(&qp_list->qps[idx]->ibqp); | |
422eea0a VP |
1375 | } |
1376 | ||
1377 | static void recover_lost_dbs(struct uld_ctx *ctx, struct qp_list *qp_list) | |
1378 | { | |
1379 | int idx; | |
1380 | int ret; | |
1381 | ||
1382 | for (idx = 0; idx < qp_list->idx; idx++) { | |
1383 | struct c4iw_qp *qp = qp_list->qps[idx]; | |
1384 | ||
05eb2389 SW |
1385 | spin_lock_irq(&qp->rhp->lock); |
1386 | spin_lock(&qp->lock); | |
422eea0a VP |
1387 | ret = cxgb4_sync_txq_pidx(qp->rhp->rdev.lldi.ports[0], |
1388 | qp->wq.sq.qid, | |
1389 | t4_sq_host_wq_pidx(&qp->wq), | |
1390 | t4_sq_wq_size(&qp->wq)); | |
1391 | if (ret) { | |
700456bd | 1392 | pr_err("%s: Fatal error - DB overflow recovery failed - error syncing SQ qid %u\n", |
422eea0a | 1393 | pci_name(ctx->lldi.pdev), qp->wq.sq.qid); |
05eb2389 SW |
1394 | spin_unlock(&qp->lock); |
1395 | spin_unlock_irq(&qp->rhp->lock); | |
422eea0a VP |
1396 | return; |
1397 | } | |
05eb2389 | 1398 | qp->wq.sq.wq_pidx_inc = 0; |
422eea0a VP |
1399 | |
1400 | ret = cxgb4_sync_txq_pidx(qp->rhp->rdev.lldi.ports[0], | |
1401 | qp->wq.rq.qid, | |
1402 | t4_rq_host_wq_pidx(&qp->wq), | |
1403 | t4_rq_wq_size(&qp->wq)); | |
1404 | ||
1405 | if (ret) { | |
700456bd | 1406 | pr_err("%s: Fatal error - DB overflow recovery failed - error syncing RQ qid %u\n", |
422eea0a | 1407 | pci_name(ctx->lldi.pdev), qp->wq.rq.qid); |
05eb2389 SW |
1408 | spin_unlock(&qp->lock); |
1409 | spin_unlock_irq(&qp->rhp->lock); | |
422eea0a VP |
1410 | return; |
1411 | } | |
05eb2389 SW |
1412 | qp->wq.rq.wq_pidx_inc = 0; |
1413 | spin_unlock(&qp->lock); | |
1414 | spin_unlock_irq(&qp->rhp->lock); | |
422eea0a VP |
1415 | |
1416 | /* Wait for the dbfifo to drain */ | |
1417 | while (cxgb4_dbfifo_count(qp->rhp->rdev.lldi.ports[0], 1) > 0) { | |
1418 | set_current_state(TASK_UNINTERRUPTIBLE); | |
1419 | schedule_timeout(usecs_to_jiffies(10)); | |
1420 | } | |
1421 | } | |
1422 | } | |
1423 | ||
1424 | static void recover_queues(struct uld_ctx *ctx) | |
1425 | { | |
1426 | int count = 0; | |
1427 | struct qp_list qp_list; | |
1428 | int ret; | |
1429 | ||
422eea0a VP |
1430 | /* slow everybody down */ |
1431 | set_current_state(TASK_UNINTERRUPTIBLE); | |
1432 | schedule_timeout(usecs_to_jiffies(1000)); | |
1433 | ||
422eea0a VP |
1434 | /* flush the SGE contexts */ |
1435 | ret = cxgb4_flush_eq_cache(ctx->dev->rdev.lldi.ports[0]); | |
1436 | if (ret) { | |
700456bd | 1437 | pr_err("%s: Fatal error - DB overflow recovery failed\n", |
422eea0a | 1438 | pci_name(ctx->lldi.pdev)); |
05eb2389 | 1439 | return; |
422eea0a VP |
1440 | } |
1441 | ||
1442 | /* Count active queues so we can build a list of queues to recover */ | |
1443 | spin_lock_irq(&ctx->dev->lock); | |
05eb2389 SW |
1444 | WARN_ON(ctx->dev->db_state != STOPPED); |
1445 | ctx->dev->db_state = RECOVERY; | |
422eea0a VP |
1446 | idr_for_each(&ctx->dev->qpidr, count_qps, &count); |
1447 | ||
1448 | qp_list.qps = kzalloc(count * sizeof *qp_list.qps, GFP_ATOMIC); | |
1449 | if (!qp_list.qps) { | |
422eea0a | 1450 | spin_unlock_irq(&ctx->dev->lock); |
05eb2389 | 1451 | return; |
422eea0a VP |
1452 | } |
1453 | qp_list.idx = 0; | |
1454 | ||
1455 | /* add and ref each qp so it doesn't get freed */ | |
1456 | idr_for_each(&ctx->dev->qpidr, add_and_ref_qp, &qp_list); | |
1457 | ||
2c974781 | 1458 | spin_unlock_irq(&ctx->dev->lock); |
422eea0a VP |
1459 | |
1460 | /* now traverse the list in a safe context to recover the db state*/ | |
1461 | recover_lost_dbs(ctx, &qp_list); | |
1462 | ||
1463 | /* we're almost done! deref the qps and clean up */ | |
05eb2389 | 1464 | deref_qps(&qp_list); |
422eea0a VP |
1465 | kfree(qp_list.qps); |
1466 | ||
422eea0a | 1467 | spin_lock_irq(&ctx->dev->lock); |
05eb2389 SW |
1468 | WARN_ON(ctx->dev->db_state != RECOVERY); |
1469 | ctx->dev->db_state = STOPPED; | |
422eea0a | 1470 | spin_unlock_irq(&ctx->dev->lock); |
2c974781 VP |
1471 | } |
1472 | ||
1473 | static int c4iw_uld_control(void *handle, enum cxgb4_control control, ...) | |
1474 | { | |
1475 | struct uld_ctx *ctx = handle; | |
1476 | ||
1477 | switch (control) { | |
1478 | case CXGB4_CONTROL_DB_FULL: | |
1479 | stop_queues(ctx); | |
2c974781 | 1480 | ctx->dev->rdev.stats.db_full++; |
2c974781 VP |
1481 | break; |
1482 | case CXGB4_CONTROL_DB_EMPTY: | |
1483 | resume_queues(ctx); | |
1484 | mutex_lock(&ctx->dev->rdev.stats.lock); | |
1485 | ctx->dev->rdev.stats.db_empty++; | |
1486 | mutex_unlock(&ctx->dev->rdev.stats.lock); | |
1487 | break; | |
1488 | case CXGB4_CONTROL_DB_DROP: | |
422eea0a | 1489 | recover_queues(ctx); |
2c974781 VP |
1490 | mutex_lock(&ctx->dev->rdev.stats.lock); |
1491 | ctx->dev->rdev.stats.db_drop++; | |
1492 | mutex_unlock(&ctx->dev->rdev.stats.lock); | |
1493 | break; | |
1494 | default: | |
700456bd JP |
1495 | pr_warn("%s: unknown control cmd %u\n", |
1496 | pci_name(ctx->lldi.pdev), control); | |
2c974781 VP |
1497 | break; |
1498 | } | |
1499 | return 0; | |
1500 | } | |
1501 | ||
cfdda9d7 SW |
1502 | static struct cxgb4_uld_info c4iw_uld_info = { |
1503 | .name = DRV_NAME, | |
0fbc81b3 | 1504 | .nrxq = MAX_ULD_QSETS, |
ab677ff4 | 1505 | .ntxq = MAX_ULD_QSETS, |
0fbc81b3 HS |
1506 | .rxq_size = 511, |
1507 | .ciq = true, | |
1508 | .lro = false, | |
cfdda9d7 SW |
1509 | .add = c4iw_uld_add, |
1510 | .rx_handler = c4iw_uld_rx_handler, | |
1511 | .state_change = c4iw_uld_state_change, | |
2c974781 | 1512 | .control = c4iw_uld_control, |
cfdda9d7 SW |
1513 | }; |
1514 | ||
2015f26c SW |
1515 | void _c4iw_free_wr_wait(struct kref *kref) |
1516 | { | |
1517 | struct c4iw_wr_wait *wr_waitp; | |
1518 | ||
1519 | wr_waitp = container_of(kref, struct c4iw_wr_wait, kref); | |
1520 | pr_debug("Free wr_wait %p\n", wr_waitp); | |
1521 | kfree(wr_waitp); | |
1522 | } | |
1523 | ||
1524 | struct c4iw_wr_wait *c4iw_alloc_wr_wait(gfp_t gfp) | |
1525 | { | |
1526 | struct c4iw_wr_wait *wr_waitp; | |
1527 | ||
1528 | wr_waitp = kzalloc(sizeof(*wr_waitp), gfp); | |
1529 | if (wr_waitp) { | |
1530 | kref_init(&wr_waitp->kref); | |
1531 | pr_debug("wr_wait %p\n", wr_waitp); | |
1532 | } | |
1533 | return wr_waitp; | |
1534 | } | |
1535 | ||
cfdda9d7 SW |
1536 | static int __init c4iw_init_module(void) |
1537 | { | |
1538 | int err; | |
1539 | ||
1540 | err = c4iw_cm_init(); | |
1541 | if (err) | |
1542 | return err; | |
1543 | ||
1544 | c4iw_debugfs_root = debugfs_create_dir(DRV_NAME, NULL); | |
1545 | if (!c4iw_debugfs_root) | |
700456bd | 1546 | pr_warn("could not create debugfs entry, continuing\n"); |
cfdda9d7 | 1547 | |
1c8f1da5 BP |
1548 | reg_workq = create_singlethread_workqueue("Register_iWARP_device"); |
1549 | if (!reg_workq) { | |
1550 | pr_err("Failed creating workqueue to register iwarp device\n"); | |
1551 | return -ENOMEM; | |
1552 | } | |
1553 | ||
cfdda9d7 SW |
1554 | cxgb4_register_uld(CXGB4_ULD_RDMA, &c4iw_uld_info); |
1555 | ||
1556 | return 0; | |
1557 | } | |
1558 | ||
1559 | static void __exit c4iw_exit_module(void) | |
1560 | { | |
2f25e9a5 | 1561 | struct uld_ctx *ctx, *tmp; |
cfdda9d7 | 1562 | |
cfdda9d7 | 1563 | mutex_lock(&dev_mutex); |
2f25e9a5 SW |
1564 | list_for_each_entry_safe(ctx, tmp, &uld_ctx_list, entry) { |
1565 | if (ctx->dev) | |
1566 | c4iw_remove(ctx); | |
1567 | kfree(ctx); | |
cfdda9d7 SW |
1568 | } |
1569 | mutex_unlock(&dev_mutex); | |
1c8f1da5 BP |
1570 | flush_workqueue(reg_workq); |
1571 | destroy_workqueue(reg_workq); | |
fd388ce6 | 1572 | cxgb4_unregister_uld(CXGB4_ULD_RDMA); |
cfdda9d7 SW |
1573 | c4iw_cm_term(); |
1574 | debugfs_remove_recursive(c4iw_debugfs_root); | |
1575 | } | |
1576 | ||
1577 | module_init(c4iw_init_module); | |
1578 | module_exit(c4iw_exit_module); |