xref: /linux/drivers/infiniband/hw/ocrdma/ocrdma_stats.c (revision 55d0969c451159cff86949b38c39171cab962069)
1 /* This file is part of the Emulex RoCE Device Driver for
2  * RoCE (RDMA over Converged Ethernet) adapters.
3  * Copyright (C) 2012-2015 Emulex. All rights reserved.
4  * EMULEX and SLI are trademarks of Emulex.
5  * www.emulex.com
6  *
7  * This software is available to you under a choice of one of two licenses.
8  * You may choose to be licensed under the terms of the GNU General Public
9  * License (GPL) Version 2, available from the file COPYING in the main
10  * directory of this source tree, or the BSD license below:
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  *
16  * - Redistributions of source code must retain the above copyright notice,
17  *   this list of conditions and the following disclaimer.
18  *
19  * - Redistributions in binary form must reproduce the above copyright
20  *   notice, this list of conditions and the following disclaimer in
21  *   the documentation and/or other materials provided with the distribution.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
27  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
31  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
32  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
33  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34  *
35  * Contact Information:
36  * linux-drivers@emulex.com
37  *
38  * Emulex
39  * 3333 Susan Street
40  * Costa Mesa, CA 92626
41  */
42 
43 #include <rdma/ib_addr.h>
44 #include <rdma/ib_pma.h>
45 #include "ocrdma_stats.h"
46 
47 static struct dentry *ocrdma_dbgfs_dir;
48 
49 static noinline_for_stack int ocrdma_add_stat(char *start, char *pcur,
50 				char *name, u64 count)
51 {
52 	char buff[128] = {0};
53 	int cpy_len = 0;
54 
55 	snprintf(buff, 128, "%s: %llu\n", name, count);
56 	cpy_len = strlen(buff);
57 
58 	if (pcur + cpy_len > start + OCRDMA_MAX_DBGFS_MEM) {
59 		pr_err("%s: No space in stats buff\n", __func__);
60 		return 0;
61 	}
62 
63 	memcpy(pcur, buff, cpy_len);
64 	return cpy_len;
65 }
66 
67 bool ocrdma_alloc_stats_resources(struct ocrdma_dev *dev)
68 {
69 	struct stats_mem *mem = &dev->stats_mem;
70 
71 	mutex_init(&dev->stats_lock);
72 	/* Alloc mbox command mem*/
73 	mem->size = max_t(u32, sizeof(struct ocrdma_rdma_stats_req),
74 			sizeof(struct ocrdma_rdma_stats_resp));
75 
76 	mem->va = dma_alloc_coherent(&dev->nic_info.pdev->dev, mem->size,
77 				     &mem->pa, GFP_KERNEL);
78 	if (!mem->va) {
79 		pr_err("%s: stats mbox allocation failed\n", __func__);
80 		return false;
81 	}
82 
83 	/* Alloc debugfs mem */
84 	mem->debugfs_mem = kzalloc(OCRDMA_MAX_DBGFS_MEM, GFP_KERNEL);
85 	if (!mem->debugfs_mem)
86 		return false;
87 
88 	return true;
89 }
90 
91 void ocrdma_release_stats_resources(struct ocrdma_dev *dev)
92 {
93 	struct stats_mem *mem = &dev->stats_mem;
94 
95 	if (mem->va)
96 		dma_free_coherent(&dev->nic_info.pdev->dev, mem->size,
97 				  mem->va, mem->pa);
98 	mem->va = NULL;
99 	kfree(mem->debugfs_mem);
100 }
101 
102 static noinline_for_stack char *ocrdma_resource_stats(struct ocrdma_dev *dev)
103 {
104 	char *stats = dev->stats_mem.debugfs_mem, *pcur;
105 	struct ocrdma_rdma_stats_resp *rdma_stats =
106 			(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
107 	struct ocrdma_rsrc_stats *rsrc_stats = &rdma_stats->act_rsrc_stats;
108 
109 	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
110 
111 	pcur = stats;
112 	pcur += ocrdma_add_stat(stats, pcur, "active_dpp_pds",
113 				(u64)rsrc_stats->dpp_pds);
114 	pcur += ocrdma_add_stat(stats, pcur, "active_non_dpp_pds",
115 				(u64)rsrc_stats->non_dpp_pds);
116 	pcur += ocrdma_add_stat(stats, pcur, "active_rc_dpp_qps",
117 				(u64)rsrc_stats->rc_dpp_qps);
118 	pcur += ocrdma_add_stat(stats, pcur, "active_uc_dpp_qps",
119 				(u64)rsrc_stats->uc_dpp_qps);
120 	pcur += ocrdma_add_stat(stats, pcur, "active_ud_dpp_qps",
121 				(u64)rsrc_stats->ud_dpp_qps);
122 	pcur += ocrdma_add_stat(stats, pcur, "active_rc_non_dpp_qps",
123 				(u64)rsrc_stats->rc_non_dpp_qps);
124 	pcur += ocrdma_add_stat(stats, pcur, "active_uc_non_dpp_qps",
125 				(u64)rsrc_stats->uc_non_dpp_qps);
126 	pcur += ocrdma_add_stat(stats, pcur, "active_ud_non_dpp_qps",
127 				(u64)rsrc_stats->ud_non_dpp_qps);
128 	pcur += ocrdma_add_stat(stats, pcur, "active_srqs",
129 				(u64)rsrc_stats->srqs);
130 	pcur += ocrdma_add_stat(stats, pcur, "active_rbqs",
131 				(u64)rsrc_stats->rbqs);
132 	pcur += ocrdma_add_stat(stats, pcur, "active_64K_nsmr",
133 				(u64)rsrc_stats->r64K_nsmr);
134 	pcur += ocrdma_add_stat(stats, pcur, "active_64K_to_2M_nsmr",
135 				(u64)rsrc_stats->r64K_to_2M_nsmr);
136 	pcur += ocrdma_add_stat(stats, pcur, "active_2M_to_44M_nsmr",
137 				(u64)rsrc_stats->r2M_to_44M_nsmr);
138 	pcur += ocrdma_add_stat(stats, pcur, "active_44M_to_1G_nsmr",
139 				(u64)rsrc_stats->r44M_to_1G_nsmr);
140 	pcur += ocrdma_add_stat(stats, pcur, "active_1G_to_4G_nsmr",
141 				(u64)rsrc_stats->r1G_to_4G_nsmr);
142 	pcur += ocrdma_add_stat(stats, pcur, "active_nsmr_count_4G_to_32G",
143 				(u64)rsrc_stats->nsmr_count_4G_to_32G);
144 	pcur += ocrdma_add_stat(stats, pcur, "active_32G_to_64G_nsmr",
145 				(u64)rsrc_stats->r32G_to_64G_nsmr);
146 	pcur += ocrdma_add_stat(stats, pcur, "active_64G_to_128G_nsmr",
147 				(u64)rsrc_stats->r64G_to_128G_nsmr);
148 	pcur += ocrdma_add_stat(stats, pcur, "active_128G_to_higher_nsmr",
149 				(u64)rsrc_stats->r128G_to_higher_nsmr);
150 	pcur += ocrdma_add_stat(stats, pcur, "active_embedded_nsmr",
151 				(u64)rsrc_stats->embedded_nsmr);
152 	pcur += ocrdma_add_stat(stats, pcur, "active_frmr",
153 				(u64)rsrc_stats->frmr);
154 	pcur += ocrdma_add_stat(stats, pcur, "active_prefetch_qps",
155 				(u64)rsrc_stats->prefetch_qps);
156 	pcur += ocrdma_add_stat(stats, pcur, "active_ondemand_qps",
157 				(u64)rsrc_stats->ondemand_qps);
158 	pcur += ocrdma_add_stat(stats, pcur, "active_phy_mr",
159 				(u64)rsrc_stats->phy_mr);
160 	pcur += ocrdma_add_stat(stats, pcur, "active_mw",
161 				(u64)rsrc_stats->mw);
162 
163 	/* Print the threshold stats */
164 	rsrc_stats = &rdma_stats->th_rsrc_stats;
165 
166 	pcur += ocrdma_add_stat(stats, pcur, "threshold_dpp_pds",
167 				(u64)rsrc_stats->dpp_pds);
168 	pcur += ocrdma_add_stat(stats, pcur, "threshold_non_dpp_pds",
169 				(u64)rsrc_stats->non_dpp_pds);
170 	pcur += ocrdma_add_stat(stats, pcur, "threshold_rc_dpp_qps",
171 				(u64)rsrc_stats->rc_dpp_qps);
172 	pcur += ocrdma_add_stat(stats, pcur, "threshold_uc_dpp_qps",
173 				(u64)rsrc_stats->uc_dpp_qps);
174 	pcur += ocrdma_add_stat(stats, pcur, "threshold_ud_dpp_qps",
175 				(u64)rsrc_stats->ud_dpp_qps);
176 	pcur += ocrdma_add_stat(stats, pcur, "threshold_rc_non_dpp_qps",
177 				(u64)rsrc_stats->rc_non_dpp_qps);
178 	pcur += ocrdma_add_stat(stats, pcur, "threshold_uc_non_dpp_qps",
179 				(u64)rsrc_stats->uc_non_dpp_qps);
180 	pcur += ocrdma_add_stat(stats, pcur, "threshold_ud_non_dpp_qps",
181 				(u64)rsrc_stats->ud_non_dpp_qps);
182 	pcur += ocrdma_add_stat(stats, pcur, "threshold_srqs",
183 				(u64)rsrc_stats->srqs);
184 	pcur += ocrdma_add_stat(stats, pcur, "threshold_rbqs",
185 				(u64)rsrc_stats->rbqs);
186 	pcur += ocrdma_add_stat(stats, pcur, "threshold_64K_nsmr",
187 				(u64)rsrc_stats->r64K_nsmr);
188 	pcur += ocrdma_add_stat(stats, pcur, "threshold_64K_to_2M_nsmr",
189 				(u64)rsrc_stats->r64K_to_2M_nsmr);
190 	pcur += ocrdma_add_stat(stats, pcur, "threshold_2M_to_44M_nsmr",
191 				(u64)rsrc_stats->r2M_to_44M_nsmr);
192 	pcur += ocrdma_add_stat(stats, pcur, "threshold_44M_to_1G_nsmr",
193 				(u64)rsrc_stats->r44M_to_1G_nsmr);
194 	pcur += ocrdma_add_stat(stats, pcur, "threshold_1G_to_4G_nsmr",
195 				(u64)rsrc_stats->r1G_to_4G_nsmr);
196 	pcur += ocrdma_add_stat(stats, pcur, "threshold_nsmr_count_4G_to_32G",
197 				(u64)rsrc_stats->nsmr_count_4G_to_32G);
198 	pcur += ocrdma_add_stat(stats, pcur, "threshold_32G_to_64G_nsmr",
199 				(u64)rsrc_stats->r32G_to_64G_nsmr);
200 	pcur += ocrdma_add_stat(stats, pcur, "threshold_64G_to_128G_nsmr",
201 				(u64)rsrc_stats->r64G_to_128G_nsmr);
202 	pcur += ocrdma_add_stat(stats, pcur, "threshold_128G_to_higher_nsmr",
203 				(u64)rsrc_stats->r128G_to_higher_nsmr);
204 	pcur += ocrdma_add_stat(stats, pcur, "threshold_embedded_nsmr",
205 				(u64)rsrc_stats->embedded_nsmr);
206 	pcur += ocrdma_add_stat(stats, pcur, "threshold_frmr",
207 				(u64)rsrc_stats->frmr);
208 	pcur += ocrdma_add_stat(stats, pcur, "threshold_prefetch_qps",
209 				(u64)rsrc_stats->prefetch_qps);
210 	pcur += ocrdma_add_stat(stats, pcur, "threshold_ondemand_qps",
211 				(u64)rsrc_stats->ondemand_qps);
212 	pcur += ocrdma_add_stat(stats, pcur, "threshold_phy_mr",
213 				(u64)rsrc_stats->phy_mr);
214 	pcur += ocrdma_add_stat(stats, pcur, "threshold_mw",
215 				(u64)rsrc_stats->mw);
216 	return stats;
217 }
218 
219 static noinline_for_stack char *ocrdma_rx_stats(struct ocrdma_dev *dev)
220 {
221 	char *stats = dev->stats_mem.debugfs_mem, *pcur;
222 	struct ocrdma_rdma_stats_resp *rdma_stats =
223 		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
224 	struct ocrdma_rx_stats *rx_stats = &rdma_stats->rx_stats;
225 
226 	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
227 
228 	pcur = stats;
229 	pcur += ocrdma_add_stat
230 		(stats, pcur, "roce_frame_bytes",
231 		 convert_to_64bit(rx_stats->roce_frame_bytes_lo,
232 		 rx_stats->roce_frame_bytes_hi));
233 	pcur += ocrdma_add_stat(stats, pcur, "roce_frame_icrc_drops",
234 				(u64)rx_stats->roce_frame_icrc_drops);
235 	pcur += ocrdma_add_stat(stats, pcur, "roce_frame_payload_len_drops",
236 				(u64)rx_stats->roce_frame_payload_len_drops);
237 	pcur += ocrdma_add_stat(stats, pcur, "ud_drops",
238 				(u64)rx_stats->ud_drops);
239 	pcur += ocrdma_add_stat(stats, pcur, "qp1_drops",
240 				(u64)rx_stats->qp1_drops);
241 	pcur += ocrdma_add_stat(stats, pcur, "psn_error_request_packets",
242 				(u64)rx_stats->psn_error_request_packets);
243 	pcur += ocrdma_add_stat(stats, pcur, "psn_error_resp_packets",
244 				(u64)rx_stats->psn_error_resp_packets);
245 	pcur += ocrdma_add_stat(stats, pcur, "rnr_nak_timeouts",
246 				(u64)rx_stats->rnr_nak_timeouts);
247 	pcur += ocrdma_add_stat(stats, pcur, "rnr_nak_receives",
248 				(u64)rx_stats->rnr_nak_receives);
249 	pcur += ocrdma_add_stat(stats, pcur, "roce_frame_rxmt_drops",
250 				(u64)rx_stats->roce_frame_rxmt_drops);
251 	pcur += ocrdma_add_stat(stats, pcur, "nak_count_psn_sequence_errors",
252 				(u64)rx_stats->nak_count_psn_sequence_errors);
253 	pcur += ocrdma_add_stat(stats, pcur, "rc_drop_count_lookup_errors",
254 				(u64)rx_stats->rc_drop_count_lookup_errors);
255 	pcur += ocrdma_add_stat(stats, pcur, "rq_rnr_naks",
256 				(u64)rx_stats->rq_rnr_naks);
257 	pcur += ocrdma_add_stat(stats, pcur, "srq_rnr_naks",
258 				(u64)rx_stats->srq_rnr_naks);
259 	pcur += ocrdma_add_stat(stats, pcur, "roce_frames",
260 				convert_to_64bit(rx_stats->roce_frames_lo,
261 						 rx_stats->roce_frames_hi));
262 
263 	return stats;
264 }
265 
266 static u64 ocrdma_sysfs_rcv_pkts(struct ocrdma_dev *dev)
267 {
268 	struct ocrdma_rdma_stats_resp *rdma_stats =
269 		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
270 	struct ocrdma_rx_stats *rx_stats = &rdma_stats->rx_stats;
271 
272 	return convert_to_64bit(rx_stats->roce_frames_lo,
273 		rx_stats->roce_frames_hi) + (u64)rx_stats->roce_frame_icrc_drops
274 		+ (u64)rx_stats->roce_frame_payload_len_drops;
275 }
276 
277 static u64 ocrdma_sysfs_rcv_data(struct ocrdma_dev *dev)
278 {
279 	struct ocrdma_rdma_stats_resp *rdma_stats =
280 		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
281 	struct ocrdma_rx_stats *rx_stats = &rdma_stats->rx_stats;
282 
283 	return (convert_to_64bit(rx_stats->roce_frame_bytes_lo,
284 		rx_stats->roce_frame_bytes_hi))/4;
285 }
286 
287 static noinline_for_stack char *ocrdma_tx_stats(struct ocrdma_dev *dev)
288 {
289 	char *stats = dev->stats_mem.debugfs_mem, *pcur;
290 	struct ocrdma_rdma_stats_resp *rdma_stats =
291 		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
292 	struct ocrdma_tx_stats *tx_stats = &rdma_stats->tx_stats;
293 
294 	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
295 
296 	pcur = stats;
297 	pcur += ocrdma_add_stat(stats, pcur, "send_pkts",
298 				convert_to_64bit(tx_stats->send_pkts_lo,
299 						 tx_stats->send_pkts_hi));
300 	pcur += ocrdma_add_stat(stats, pcur, "write_pkts",
301 				convert_to_64bit(tx_stats->write_pkts_lo,
302 						 tx_stats->write_pkts_hi));
303 	pcur += ocrdma_add_stat(stats, pcur, "read_pkts",
304 				convert_to_64bit(tx_stats->read_pkts_lo,
305 						 tx_stats->read_pkts_hi));
306 	pcur += ocrdma_add_stat(stats, pcur, "read_rsp_pkts",
307 				convert_to_64bit(tx_stats->read_rsp_pkts_lo,
308 						 tx_stats->read_rsp_pkts_hi));
309 	pcur += ocrdma_add_stat(stats, pcur, "ack_pkts",
310 				convert_to_64bit(tx_stats->ack_pkts_lo,
311 						 tx_stats->ack_pkts_hi));
312 	pcur += ocrdma_add_stat(stats, pcur, "send_bytes",
313 				convert_to_64bit(tx_stats->send_bytes_lo,
314 						 tx_stats->send_bytes_hi));
315 	pcur += ocrdma_add_stat(stats, pcur, "write_bytes",
316 				convert_to_64bit(tx_stats->write_bytes_lo,
317 						 tx_stats->write_bytes_hi));
318 	pcur += ocrdma_add_stat(stats, pcur, "read_req_bytes",
319 				convert_to_64bit(tx_stats->read_req_bytes_lo,
320 						 tx_stats->read_req_bytes_hi));
321 	pcur += ocrdma_add_stat(stats, pcur, "read_rsp_bytes",
322 				convert_to_64bit(tx_stats->read_rsp_bytes_lo,
323 						 tx_stats->read_rsp_bytes_hi));
324 	pcur += ocrdma_add_stat(stats, pcur, "ack_timeouts",
325 				(u64)tx_stats->ack_timeouts);
326 
327 	return stats;
328 }
329 
330 static u64 ocrdma_sysfs_xmit_pkts(struct ocrdma_dev *dev)
331 {
332 	struct ocrdma_rdma_stats_resp *rdma_stats =
333 		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
334 	struct ocrdma_tx_stats *tx_stats = &rdma_stats->tx_stats;
335 
336 	return (convert_to_64bit(tx_stats->send_pkts_lo,
337 				 tx_stats->send_pkts_hi) +
338 	convert_to_64bit(tx_stats->write_pkts_lo, tx_stats->write_pkts_hi) +
339 	convert_to_64bit(tx_stats->read_pkts_lo, tx_stats->read_pkts_hi) +
340 	convert_to_64bit(tx_stats->read_rsp_pkts_lo,
341 			 tx_stats->read_rsp_pkts_hi) +
342 	convert_to_64bit(tx_stats->ack_pkts_lo, tx_stats->ack_pkts_hi));
343 }
344 
345 static u64 ocrdma_sysfs_xmit_data(struct ocrdma_dev *dev)
346 {
347 	struct ocrdma_rdma_stats_resp *rdma_stats =
348 		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
349 	struct ocrdma_tx_stats *tx_stats = &rdma_stats->tx_stats;
350 
351 	return (convert_to_64bit(tx_stats->send_bytes_lo,
352 				 tx_stats->send_bytes_hi) +
353 		convert_to_64bit(tx_stats->write_bytes_lo,
354 				 tx_stats->write_bytes_hi) +
355 		convert_to_64bit(tx_stats->read_req_bytes_lo,
356 				 tx_stats->read_req_bytes_hi) +
357 		convert_to_64bit(tx_stats->read_rsp_bytes_lo,
358 				 tx_stats->read_rsp_bytes_hi))/4;
359 }
360 
361 static noinline_for_stack char *ocrdma_wqe_stats(struct ocrdma_dev *dev)
362 {
363 	char *stats = dev->stats_mem.debugfs_mem, *pcur;
364 	struct ocrdma_rdma_stats_resp *rdma_stats =
365 		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
366 	struct ocrdma_wqe_stats	*wqe_stats = &rdma_stats->wqe_stats;
367 
368 	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
369 
370 	pcur = stats;
371 	pcur += ocrdma_add_stat(stats, pcur, "large_send_rc_wqes",
372 		convert_to_64bit(wqe_stats->large_send_rc_wqes_lo,
373 				 wqe_stats->large_send_rc_wqes_hi));
374 	pcur += ocrdma_add_stat(stats, pcur, "large_write_rc_wqes",
375 		convert_to_64bit(wqe_stats->large_write_rc_wqes_lo,
376 				 wqe_stats->large_write_rc_wqes_hi));
377 	pcur += ocrdma_add_stat(stats, pcur, "read_wqes",
378 				convert_to_64bit(wqe_stats->read_wqes_lo,
379 						 wqe_stats->read_wqes_hi));
380 	pcur += ocrdma_add_stat(stats, pcur, "frmr_wqes",
381 				convert_to_64bit(wqe_stats->frmr_wqes_lo,
382 						 wqe_stats->frmr_wqes_hi));
383 	pcur += ocrdma_add_stat(stats, pcur, "mw_bind_wqes",
384 				convert_to_64bit(wqe_stats->mw_bind_wqes_lo,
385 						 wqe_stats->mw_bind_wqes_hi));
386 	pcur += ocrdma_add_stat(stats, pcur, "invalidate_wqes",
387 		convert_to_64bit(wqe_stats->invalidate_wqes_lo,
388 				 wqe_stats->invalidate_wqes_hi));
389 	pcur += ocrdma_add_stat(stats, pcur, "dpp_wqe_drops",
390 				(u64)wqe_stats->dpp_wqe_drops);
391 	return stats;
392 }
393 
394 static noinline_for_stack char *ocrdma_db_errstats(struct ocrdma_dev *dev)
395 {
396 	char *stats = dev->stats_mem.debugfs_mem, *pcur;
397 	struct ocrdma_rdma_stats_resp *rdma_stats =
398 		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
399 	struct ocrdma_db_err_stats *db_err_stats = &rdma_stats->db_err_stats;
400 
401 	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
402 
403 	pcur = stats;
404 	pcur += ocrdma_add_stat(stats, pcur, "sq_doorbell_errors",
405 				(u64)db_err_stats->sq_doorbell_errors);
406 	pcur += ocrdma_add_stat(stats, pcur, "cq_doorbell_errors",
407 				(u64)db_err_stats->cq_doorbell_errors);
408 	pcur += ocrdma_add_stat(stats, pcur, "rq_srq_doorbell_errors",
409 				(u64)db_err_stats->rq_srq_doorbell_errors);
410 	pcur += ocrdma_add_stat(stats, pcur, "cq_overflow_errors",
411 				(u64)db_err_stats->cq_overflow_errors);
412 	return stats;
413 }
414 
415 static noinline_for_stack char *ocrdma_rxqp_errstats(struct ocrdma_dev *dev)
416 {
417 	char *stats = dev->stats_mem.debugfs_mem, *pcur;
418 	struct ocrdma_rdma_stats_resp *rdma_stats =
419 		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
420 	struct ocrdma_rx_qp_err_stats *rx_qp_err_stats =
421 		 &rdma_stats->rx_qp_err_stats;
422 
423 	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
424 
425 	pcur = stats;
426 	pcur += ocrdma_add_stat(stats, pcur, "nak_invalid_request_errors",
427 			(u64)rx_qp_err_stats->nak_invalid_request_errors);
428 	pcur += ocrdma_add_stat(stats, pcur, "nak_remote_operation_errors",
429 			(u64)rx_qp_err_stats->nak_remote_operation_errors);
430 	pcur += ocrdma_add_stat(stats, pcur, "nak_count_remote_access_errors",
431 			(u64)rx_qp_err_stats->nak_count_remote_access_errors);
432 	pcur += ocrdma_add_stat(stats, pcur, "local_length_errors",
433 			(u64)rx_qp_err_stats->local_length_errors);
434 	pcur += ocrdma_add_stat(stats, pcur, "local_protection_errors",
435 			(u64)rx_qp_err_stats->local_protection_errors);
436 	pcur += ocrdma_add_stat(stats, pcur, "local_qp_operation_errors",
437 			(u64)rx_qp_err_stats->local_qp_operation_errors);
438 	return stats;
439 }
440 
441 static noinline_for_stack char *ocrdma_txqp_errstats(struct ocrdma_dev *dev)
442 {
443 	char *stats = dev->stats_mem.debugfs_mem, *pcur;
444 	struct ocrdma_rdma_stats_resp *rdma_stats =
445 		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
446 	struct ocrdma_tx_qp_err_stats *tx_qp_err_stats =
447 		&rdma_stats->tx_qp_err_stats;
448 
449 	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
450 
451 	pcur = stats;
452 	pcur += ocrdma_add_stat(stats, pcur, "local_length_errors",
453 			(u64)tx_qp_err_stats->local_length_errors);
454 	pcur += ocrdma_add_stat(stats, pcur, "local_protection_errors",
455 			(u64)tx_qp_err_stats->local_protection_errors);
456 	pcur += ocrdma_add_stat(stats, pcur, "local_qp_operation_errors",
457 			(u64)tx_qp_err_stats->local_qp_operation_errors);
458 	pcur += ocrdma_add_stat(stats, pcur, "retry_count_exceeded_errors",
459 			(u64)tx_qp_err_stats->retry_count_exceeded_errors);
460 	pcur += ocrdma_add_stat(stats, pcur, "rnr_retry_count_exceeded_errors",
461 			(u64)tx_qp_err_stats->rnr_retry_count_exceeded_errors);
462 	return stats;
463 }
464 
465 static noinline_for_stack char *ocrdma_tx_dbg_stats(struct ocrdma_dev *dev)
466 {
467 	int i;
468 	char *pstats = dev->stats_mem.debugfs_mem;
469 	struct ocrdma_rdma_stats_resp *rdma_stats =
470 		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
471 	struct ocrdma_tx_dbg_stats *tx_dbg_stats =
472 		&rdma_stats->tx_dbg_stats;
473 
474 	memset(pstats, 0, (OCRDMA_MAX_DBGFS_MEM));
475 
476 	for (i = 0; i < 100; i++)
477 		pstats += snprintf(pstats, 80, "DW[%d] = 0x%x\n", i,
478 				 tx_dbg_stats->data[i]);
479 
480 	return dev->stats_mem.debugfs_mem;
481 }
482 
483 static noinline_for_stack char *ocrdma_rx_dbg_stats(struct ocrdma_dev *dev)
484 {
485 	int i;
486 	char *pstats = dev->stats_mem.debugfs_mem;
487 	struct ocrdma_rdma_stats_resp *rdma_stats =
488 		(struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
489 	struct ocrdma_rx_dbg_stats *rx_dbg_stats =
490 		&rdma_stats->rx_dbg_stats;
491 
492 	memset(pstats, 0, (OCRDMA_MAX_DBGFS_MEM));
493 
494 	for (i = 0; i < 200; i++)
495 		pstats += snprintf(pstats, 80, "DW[%d] = 0x%x\n", i,
496 				 rx_dbg_stats->data[i]);
497 
498 	return dev->stats_mem.debugfs_mem;
499 }
500 
501 static noinline_for_stack char *ocrdma_driver_dbg_stats(struct ocrdma_dev *dev)
502 {
503 	char *stats = dev->stats_mem.debugfs_mem, *pcur;
504 
505 
506 	memset(stats, 0, (OCRDMA_MAX_DBGFS_MEM));
507 
508 	pcur = stats;
509 	pcur += ocrdma_add_stat(stats, pcur, "async_cq_err",
510 				(u64)(dev->async_err_stats
511 				[OCRDMA_CQ_ERROR].counter));
512 	pcur += ocrdma_add_stat(stats, pcur, "async_cq_overrun_err",
513 				(u64)dev->async_err_stats
514 				[OCRDMA_CQ_OVERRUN_ERROR].counter);
515 	pcur += ocrdma_add_stat(stats, pcur, "async_cq_qpcat_err",
516 				(u64)dev->async_err_stats
517 				[OCRDMA_CQ_QPCAT_ERROR].counter);
518 	pcur += ocrdma_add_stat(stats, pcur, "async_qp_access_err",
519 				(u64)dev->async_err_stats
520 				[OCRDMA_QP_ACCESS_ERROR].counter);
521 	pcur += ocrdma_add_stat(stats, pcur, "async_qp_commm_est_evt",
522 				(u64)dev->async_err_stats
523 				[OCRDMA_QP_COMM_EST_EVENT].counter);
524 	pcur += ocrdma_add_stat(stats, pcur, "async_sq_drained_evt",
525 				(u64)dev->async_err_stats
526 				[OCRDMA_SQ_DRAINED_EVENT].counter);
527 	pcur += ocrdma_add_stat(stats, pcur, "async_dev_fatal_evt",
528 				(u64)dev->async_err_stats
529 				[OCRDMA_DEVICE_FATAL_EVENT].counter);
530 	pcur += ocrdma_add_stat(stats, pcur, "async_srqcat_err",
531 				(u64)dev->async_err_stats
532 				[OCRDMA_SRQCAT_ERROR].counter);
533 	pcur += ocrdma_add_stat(stats, pcur, "async_srq_limit_evt",
534 				(u64)dev->async_err_stats
535 				[OCRDMA_SRQ_LIMIT_EVENT].counter);
536 	pcur += ocrdma_add_stat(stats, pcur, "async_qp_last_wqe_evt",
537 				(u64)dev->async_err_stats
538 				[OCRDMA_QP_LAST_WQE_EVENT].counter);
539 
540 	pcur += ocrdma_add_stat(stats, pcur, "cqe_loc_len_err",
541 				(u64)dev->cqe_err_stats
542 				[OCRDMA_CQE_LOC_LEN_ERR].counter);
543 	pcur += ocrdma_add_stat(stats, pcur, "cqe_loc_qp_op_err",
544 				(u64)dev->cqe_err_stats
545 				[OCRDMA_CQE_LOC_QP_OP_ERR].counter);
546 	pcur += ocrdma_add_stat(stats, pcur, "cqe_loc_eec_op_err",
547 				(u64)dev->cqe_err_stats
548 				[OCRDMA_CQE_LOC_EEC_OP_ERR].counter);
549 	pcur += ocrdma_add_stat(stats, pcur, "cqe_loc_prot_err",
550 				(u64)dev->cqe_err_stats
551 				[OCRDMA_CQE_LOC_PROT_ERR].counter);
552 	pcur += ocrdma_add_stat(stats, pcur, "cqe_wr_flush_err",
553 				(u64)dev->cqe_err_stats
554 				[OCRDMA_CQE_WR_FLUSH_ERR].counter);
555 	pcur += ocrdma_add_stat(stats, pcur, "cqe_mw_bind_err",
556 				(u64)dev->cqe_err_stats
557 				[OCRDMA_CQE_MW_BIND_ERR].counter);
558 	pcur += ocrdma_add_stat(stats, pcur, "cqe_bad_resp_err",
559 				(u64)dev->cqe_err_stats
560 				[OCRDMA_CQE_BAD_RESP_ERR].counter);
561 	pcur += ocrdma_add_stat(stats, pcur, "cqe_loc_access_err",
562 				(u64)dev->cqe_err_stats
563 				[OCRDMA_CQE_LOC_ACCESS_ERR].counter);
564 	pcur += ocrdma_add_stat(stats, pcur, "cqe_rem_inv_req_err",
565 				(u64)dev->cqe_err_stats
566 				[OCRDMA_CQE_REM_INV_REQ_ERR].counter);
567 	pcur += ocrdma_add_stat(stats, pcur, "cqe_rem_access_err",
568 				(u64)dev->cqe_err_stats
569 				[OCRDMA_CQE_REM_ACCESS_ERR].counter);
570 	pcur += ocrdma_add_stat(stats, pcur, "cqe_rem_op_err",
571 				(u64)dev->cqe_err_stats
572 				[OCRDMA_CQE_REM_OP_ERR].counter);
573 	pcur += ocrdma_add_stat(stats, pcur, "cqe_retry_exc_err",
574 				(u64)dev->cqe_err_stats
575 				[OCRDMA_CQE_RETRY_EXC_ERR].counter);
576 	pcur += ocrdma_add_stat(stats, pcur, "cqe_rnr_retry_exc_err",
577 				(u64)dev->cqe_err_stats
578 				[OCRDMA_CQE_RNR_RETRY_EXC_ERR].counter);
579 	pcur += ocrdma_add_stat(stats, pcur, "cqe_loc_rdd_viol_err",
580 				(u64)dev->cqe_err_stats
581 				[OCRDMA_CQE_LOC_RDD_VIOL_ERR].counter);
582 	pcur += ocrdma_add_stat(stats, pcur, "cqe_rem_inv_rd_req_err",
583 				(u64)dev->cqe_err_stats
584 				[OCRDMA_CQE_REM_INV_RD_REQ_ERR].counter);
585 	pcur += ocrdma_add_stat(stats, pcur, "cqe_rem_abort_err",
586 				(u64)dev->cqe_err_stats
587 				[OCRDMA_CQE_REM_ABORT_ERR].counter);
588 	pcur += ocrdma_add_stat(stats, pcur, "cqe_inv_eecn_err",
589 				(u64)dev->cqe_err_stats
590 				[OCRDMA_CQE_INV_EECN_ERR].counter);
591 	pcur += ocrdma_add_stat(stats, pcur, "cqe_inv_eec_state_err",
592 				(u64)dev->cqe_err_stats
593 				[OCRDMA_CQE_INV_EEC_STATE_ERR].counter);
594 	pcur += ocrdma_add_stat(stats, pcur, "cqe_fatal_err",
595 				(u64)dev->cqe_err_stats
596 				[OCRDMA_CQE_FATAL_ERR].counter);
597 	pcur += ocrdma_add_stat(stats, pcur, "cqe_resp_timeout_err",
598 				(u64)dev->cqe_err_stats
599 				[OCRDMA_CQE_RESP_TIMEOUT_ERR].counter);
600 	pcur += ocrdma_add_stat(stats, pcur, "cqe_general_err",
601 				(u64)dev->cqe_err_stats
602 				[OCRDMA_CQE_GENERAL_ERR].counter);
603 	return stats;
604 }
605 
606 static void ocrdma_update_stats(struct ocrdma_dev *dev)
607 {
608 	ulong now = jiffies, secs;
609 	int status;
610 	struct ocrdma_rdma_stats_resp *rdma_stats =
611 		      (struct ocrdma_rdma_stats_resp *)dev->stats_mem.va;
612 	struct ocrdma_rsrc_stats *rsrc_stats = &rdma_stats->act_rsrc_stats;
613 
614 	secs = jiffies_to_msecs(now - dev->last_stats_time) / 1000U;
615 	if (secs) {
616 		/* update */
617 		status = ocrdma_mbx_rdma_stats(dev, false);
618 		if (status)
619 			pr_err("%s: stats mbox failed with status = %d\n",
620 			       __func__, status);
621 		/* Update PD counters from PD resource manager */
622 		if (dev->pd_mgr->pd_prealloc_valid) {
623 			rsrc_stats->dpp_pds = dev->pd_mgr->pd_dpp_count;
624 			rsrc_stats->non_dpp_pds = dev->pd_mgr->pd_norm_count;
625 			/* Threshold stata*/
626 			rsrc_stats = &rdma_stats->th_rsrc_stats;
627 			rsrc_stats->dpp_pds = dev->pd_mgr->pd_dpp_thrsh;
628 			rsrc_stats->non_dpp_pds = dev->pd_mgr->pd_norm_thrsh;
629 		}
630 		dev->last_stats_time = jiffies;
631 	}
632 }
633 
634 static ssize_t ocrdma_dbgfs_ops_write(struct file *filp,
635 					const char __user *buffer,
636 					size_t count, loff_t *ppos)
637 {
638 	char tmp_str[32];
639 	long reset;
640 	int status;
641 	struct ocrdma_stats *pstats = filp->private_data;
642 	struct ocrdma_dev *dev = pstats->dev;
643 
644 	if (*ppos != 0 || count == 0 || count > sizeof(tmp_str))
645 		goto err;
646 
647 	if (copy_from_user(tmp_str, buffer, count))
648 		goto err;
649 
650 	tmp_str[count-1] = '\0';
651 	if (kstrtol(tmp_str, 10, &reset))
652 		goto err;
653 
654 	switch (pstats->type) {
655 	case OCRDMA_RESET_STATS:
656 		if (reset) {
657 			status = ocrdma_mbx_rdma_stats(dev, true);
658 			if (status) {
659 				pr_err("Failed to reset stats = %d\n", status);
660 				goto err;
661 			}
662 		}
663 		break;
664 	default:
665 		goto err;
666 	}
667 
668 	return count;
669 err:
670 	return -EFAULT;
671 }
672 
673 void ocrdma_pma_counters(struct ocrdma_dev *dev, struct ib_mad *out_mad)
674 {
675 	struct ib_pma_portcounters *pma_cnt;
676 
677 	pma_cnt = (void *)(out_mad->data + 40);
678 	ocrdma_update_stats(dev);
679 
680 	pma_cnt->port_xmit_data    = cpu_to_be32(ocrdma_sysfs_xmit_data(dev));
681 	pma_cnt->port_rcv_data     = cpu_to_be32(ocrdma_sysfs_rcv_data(dev));
682 	pma_cnt->port_xmit_packets = cpu_to_be32(ocrdma_sysfs_xmit_pkts(dev));
683 	pma_cnt->port_rcv_packets  = cpu_to_be32(ocrdma_sysfs_rcv_pkts(dev));
684 }
685 
686 static ssize_t ocrdma_dbgfs_ops_read(struct file *filp, char __user *buffer,
687 					size_t usr_buf_len, loff_t *ppos)
688 {
689 	struct ocrdma_stats *pstats = filp->private_data;
690 	struct ocrdma_dev *dev = pstats->dev;
691 	ssize_t status = 0;
692 	char *data = NULL;
693 
694 	/* No partial reads */
695 	if (*ppos != 0)
696 		return 0;
697 
698 	mutex_lock(&dev->stats_lock);
699 
700 	ocrdma_update_stats(dev);
701 
702 	switch (pstats->type) {
703 	case OCRDMA_RSRC_STATS:
704 		data = ocrdma_resource_stats(dev);
705 		break;
706 	case OCRDMA_RXSTATS:
707 		data = ocrdma_rx_stats(dev);
708 		break;
709 	case OCRDMA_WQESTATS:
710 		data = ocrdma_wqe_stats(dev);
711 		break;
712 	case OCRDMA_TXSTATS:
713 		data = ocrdma_tx_stats(dev);
714 		break;
715 	case OCRDMA_DB_ERRSTATS:
716 		data = ocrdma_db_errstats(dev);
717 		break;
718 	case OCRDMA_RXQP_ERRSTATS:
719 		data = ocrdma_rxqp_errstats(dev);
720 		break;
721 	case OCRDMA_TXQP_ERRSTATS:
722 		data = ocrdma_txqp_errstats(dev);
723 		break;
724 	case OCRDMA_TX_DBG_STATS:
725 		data = ocrdma_tx_dbg_stats(dev);
726 		break;
727 	case OCRDMA_RX_DBG_STATS:
728 		data = ocrdma_rx_dbg_stats(dev);
729 		break;
730 	case OCRDMA_DRV_STATS:
731 		data = ocrdma_driver_dbg_stats(dev);
732 		break;
733 
734 	default:
735 		status = -EFAULT;
736 		goto exit;
737 	}
738 
739 	if (usr_buf_len < strlen(data)) {
740 		status = -ENOSPC;
741 		goto exit;
742 	}
743 
744 	status = simple_read_from_buffer(buffer, usr_buf_len, ppos, data,
745 					 strlen(data));
746 exit:
747 	mutex_unlock(&dev->stats_lock);
748 	return status;
749 }
750 
751 static const struct file_operations ocrdma_dbg_ops = {
752 	.owner = THIS_MODULE,
753 	.open = simple_open,
754 	.read = ocrdma_dbgfs_ops_read,
755 	.write = ocrdma_dbgfs_ops_write,
756 };
757 
758 void ocrdma_add_port_stats(struct ocrdma_dev *dev)
759 {
760 	const struct pci_dev *pdev = dev->nic_info.pdev;
761 
762 	if (!ocrdma_dbgfs_dir)
763 		return;
764 
765 	/* Create post stats base dir */
766 	dev->dir = debugfs_create_dir(pci_name(pdev), ocrdma_dbgfs_dir);
767 
768 	dev->rsrc_stats.type = OCRDMA_RSRC_STATS;
769 	dev->rsrc_stats.dev = dev;
770 	debugfs_create_file("resource_stats", S_IRUSR, dev->dir,
771 			    &dev->rsrc_stats, &ocrdma_dbg_ops);
772 
773 	dev->rx_stats.type = OCRDMA_RXSTATS;
774 	dev->rx_stats.dev = dev;
775 	debugfs_create_file("rx_stats", S_IRUSR, dev->dir, &dev->rx_stats,
776 			    &ocrdma_dbg_ops);
777 
778 	dev->wqe_stats.type = OCRDMA_WQESTATS;
779 	dev->wqe_stats.dev = dev;
780 	debugfs_create_file("wqe_stats", S_IRUSR, dev->dir, &dev->wqe_stats,
781 			    &ocrdma_dbg_ops);
782 
783 	dev->tx_stats.type = OCRDMA_TXSTATS;
784 	dev->tx_stats.dev = dev;
785 	debugfs_create_file("tx_stats", S_IRUSR, dev->dir, &dev->tx_stats,
786 			    &ocrdma_dbg_ops);
787 
788 	dev->db_err_stats.type = OCRDMA_DB_ERRSTATS;
789 	dev->db_err_stats.dev = dev;
790 	debugfs_create_file("db_err_stats", S_IRUSR, dev->dir,
791 			    &dev->db_err_stats, &ocrdma_dbg_ops);
792 
793 	dev->tx_qp_err_stats.type = OCRDMA_TXQP_ERRSTATS;
794 	dev->tx_qp_err_stats.dev = dev;
795 	debugfs_create_file("tx_qp_err_stats", S_IRUSR, dev->dir,
796 			    &dev->tx_qp_err_stats, &ocrdma_dbg_ops);
797 
798 	dev->rx_qp_err_stats.type = OCRDMA_RXQP_ERRSTATS;
799 	dev->rx_qp_err_stats.dev = dev;
800 	debugfs_create_file("rx_qp_err_stats", S_IRUSR, dev->dir,
801 			    &dev->rx_qp_err_stats, &ocrdma_dbg_ops);
802 
803 	dev->tx_dbg_stats.type = OCRDMA_TX_DBG_STATS;
804 	dev->tx_dbg_stats.dev = dev;
805 	debugfs_create_file("tx_dbg_stats", S_IRUSR, dev->dir,
806 			    &dev->tx_dbg_stats, &ocrdma_dbg_ops);
807 
808 	dev->rx_dbg_stats.type = OCRDMA_RX_DBG_STATS;
809 	dev->rx_dbg_stats.dev = dev;
810 	debugfs_create_file("rx_dbg_stats", S_IRUSR, dev->dir,
811 			    &dev->rx_dbg_stats, &ocrdma_dbg_ops);
812 
813 	dev->driver_stats.type = OCRDMA_DRV_STATS;
814 	dev->driver_stats.dev = dev;
815 	debugfs_create_file("driver_dbg_stats", S_IRUSR, dev->dir,
816 			    &dev->driver_stats, &ocrdma_dbg_ops);
817 
818 	dev->reset_stats.type = OCRDMA_RESET_STATS;
819 	dev->reset_stats.dev = dev;
820 	debugfs_create_file("reset_stats", 0200, dev->dir, &dev->reset_stats,
821 			    &ocrdma_dbg_ops);
822 }
823 
824 void ocrdma_rem_port_stats(struct ocrdma_dev *dev)
825 {
826 	debugfs_remove_recursive(dev->dir);
827 }
828 
829 void ocrdma_init_debugfs(void)
830 {
831 	/* Create base dir in debugfs root dir */
832 	ocrdma_dbgfs_dir = debugfs_create_dir("ocrdma", NULL);
833 }
834 
835 void ocrdma_rem_debugfs(void)
836 {
837 	debugfs_remove_recursive(ocrdma_dbgfs_dir);
838 }
839