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1// SPDX-License-Identifier: GPL-2.0
2/* Copyright(c) 2021 Intel Corporation. All rights rsvd. */
3
4#include <linux/module.h>
5#include <linux/kernel.h>
6#include <linux/highmem.h>
7#include <linux/mm.h>
8#include <linux/slab.h>
9#include <linux/delay.h>
10#include <linux/smp.h>
11#include <uapi/linux/idxd.h>
12#include <linux/idxd.h>
13#include <linux/dmaengine.h>
14#include "../../dma/idxd/idxd.h"
15#include <linux/debugfs.h>
16#include <crypto/internal/acompress.h>
17#include "iaa_crypto.h"
18#include "iaa_crypto_stats.h"
19
20static u64 total_comp_calls;
21static u64 total_decomp_calls;
22static u64 total_sw_decomp_calls;
23static u64 max_comp_delay_ns;
24static u64 max_decomp_delay_ns;
25static u64 max_acomp_delay_ns;
26static u64 max_adecomp_delay_ns;
27static u64 total_comp_bytes_out;
28static u64 total_decomp_bytes_in;
29static u64 total_completion_einval_errors;
30static u64 total_completion_timeout_errors;
31static u64 total_completion_comp_buf_overflow_errors;
32
33static struct dentry *iaa_crypto_debugfs_root;
34
35void update_total_comp_calls(void)
36{
37 total_comp_calls++;
38}
39
40void update_total_comp_bytes_out(int n)
41{
42 total_comp_bytes_out += n;
43}
44
45void update_total_decomp_calls(void)
46{
47 total_decomp_calls++;
48}
49
50void update_total_sw_decomp_calls(void)
51{
52 total_sw_decomp_calls++;
53}
54
55void update_total_decomp_bytes_in(int n)
56{
57 total_decomp_bytes_in += n;
58}
59
60void update_completion_einval_errs(void)
61{
62 total_completion_einval_errors++;
63}
64
65void update_completion_timeout_errs(void)
66{
67 total_completion_timeout_errors++;
68}
69
70void update_completion_comp_buf_overflow_errs(void)
71{
72 total_completion_comp_buf_overflow_errors++;
73}
74
75void update_max_comp_delay_ns(u64 start_time_ns)
76{
77 u64 time_diff;
78
79 time_diff = ktime_get_ns() - start_time_ns;
80
81 if (time_diff > max_comp_delay_ns)
82 max_comp_delay_ns = time_diff;
83}
84
85void update_max_decomp_delay_ns(u64 start_time_ns)
86{
87 u64 time_diff;
88
89 time_diff = ktime_get_ns() - start_time_ns;
90
91 if (time_diff > max_decomp_delay_ns)
92 max_decomp_delay_ns = time_diff;
93}
94
95void update_max_acomp_delay_ns(u64 start_time_ns)
96{
97 u64 time_diff;
98
99 time_diff = ktime_get_ns() - start_time_ns;
100
101 if (time_diff > max_acomp_delay_ns)
102 max_acomp_delay_ns = time_diff;
103}
104
105void update_max_adecomp_delay_ns(u64 start_time_ns)
106{
107 u64 time_diff;
108
109 time_diff = ktime_get_ns() - start_time_ns;
110
111 if (time_diff > max_adecomp_delay_ns)
112 max_adecomp_delay_ns = time_diff;
113}
114
115void update_wq_comp_calls(struct idxd_wq *idxd_wq)
116{
117 struct iaa_wq *wq = idxd_wq_get_private(idxd_wq);
118
119 wq->comp_calls++;
120 wq->iaa_device->comp_calls++;
121}
122
123void update_wq_comp_bytes(struct idxd_wq *idxd_wq, int n)
124{
125 struct iaa_wq *wq = idxd_wq_get_private(idxd_wq);
126
127 wq->comp_bytes += n;
128 wq->iaa_device->comp_bytes += n;
129}
130
131void update_wq_decomp_calls(struct idxd_wq *idxd_wq)
132{
133 struct iaa_wq *wq = idxd_wq_get_private(idxd_wq);
134
135 wq->decomp_calls++;
136 wq->iaa_device->decomp_calls++;
137}
138
139void update_wq_decomp_bytes(struct idxd_wq *idxd_wq, int n)
140{
141 struct iaa_wq *wq = idxd_wq_get_private(idxd_wq);
142
143 wq->decomp_bytes += n;
144 wq->iaa_device->decomp_bytes += n;
145}
146
147static void reset_iaa_crypto_stats(void)
148{
149 total_comp_calls = 0;
150 total_decomp_calls = 0;
151 total_sw_decomp_calls = 0;
152 max_comp_delay_ns = 0;
153 max_decomp_delay_ns = 0;
154 max_acomp_delay_ns = 0;
155 max_adecomp_delay_ns = 0;
156 total_comp_bytes_out = 0;
157 total_decomp_bytes_in = 0;
158 total_completion_einval_errors = 0;
159 total_completion_timeout_errors = 0;
160 total_completion_comp_buf_overflow_errors = 0;
161}
162
163static void reset_wq_stats(struct iaa_wq *wq)
164{
165 wq->comp_calls = 0;
166 wq->comp_bytes = 0;
167 wq->decomp_calls = 0;
168 wq->decomp_bytes = 0;
169}
170
171static void reset_device_stats(struct iaa_device *iaa_device)
172{
173 struct iaa_wq *iaa_wq;
174
175 iaa_device->comp_calls = 0;
176 iaa_device->comp_bytes = 0;
177 iaa_device->decomp_calls = 0;
178 iaa_device->decomp_bytes = 0;
179
180 list_for_each_entry(iaa_wq, &iaa_device->wqs, list)
181 reset_wq_stats(iaa_wq);
182}
183
184static void wq_show(struct seq_file *m, struct iaa_wq *iaa_wq)
185{
186 seq_printf(m, " name: %s\n", iaa_wq->wq->name);
187 seq_printf(m, " comp_calls: %llu\n", iaa_wq->comp_calls);
188 seq_printf(m, " comp_bytes: %llu\n", iaa_wq->comp_bytes);
189 seq_printf(m, " decomp_calls: %llu\n", iaa_wq->decomp_calls);
190 seq_printf(m, " decomp_bytes: %llu\n\n", iaa_wq->decomp_bytes);
191}
192
193static void device_stats_show(struct seq_file *m, struct iaa_device *iaa_device)
194{
195 struct iaa_wq *iaa_wq;
196
197 seq_puts(m, "iaa device:\n");
198 seq_printf(m, " id: %d\n", iaa_device->idxd->id);
199 seq_printf(m, " n_wqs: %d\n", iaa_device->n_wq);
200 seq_printf(m, " comp_calls: %llu\n", iaa_device->comp_calls);
201 seq_printf(m, " comp_bytes: %llu\n", iaa_device->comp_bytes);
202 seq_printf(m, " decomp_calls: %llu\n", iaa_device->decomp_calls);
203 seq_printf(m, " decomp_bytes: %llu\n", iaa_device->decomp_bytes);
204 seq_puts(m, " wqs:\n");
205
206 list_for_each_entry(iaa_wq, &iaa_device->wqs, list)
207 wq_show(m, iaa_wq);
208}
209
210static void global_stats_show(struct seq_file *m)
211{
212 seq_puts(m, "global stats:\n");
213 seq_printf(m, " total_comp_calls: %llu\n", total_comp_calls);
214 seq_printf(m, " total_decomp_calls: %llu\n", total_decomp_calls);
215 seq_printf(m, " total_sw_decomp_calls: %llu\n", total_sw_decomp_calls);
216 seq_printf(m, " total_comp_bytes_out: %llu\n", total_comp_bytes_out);
217 seq_printf(m, " total_decomp_bytes_in: %llu\n", total_decomp_bytes_in);
218 seq_printf(m, " total_completion_einval_errors: %llu\n",
219 total_completion_einval_errors);
220 seq_printf(m, " total_completion_timeout_errors: %llu\n",
221 total_completion_timeout_errors);
222 seq_printf(m, " total_completion_comp_buf_overflow_errors: %llu\n\n",
223 total_completion_comp_buf_overflow_errors);
224}
225
226static int wq_stats_show(struct seq_file *m, void *v)
227{
228 struct iaa_device *iaa_device;
229
230 mutex_lock(&iaa_devices_lock);
231
232 global_stats_show(m);
233
234 list_for_each_entry(iaa_device, &iaa_devices, list)
235 device_stats_show(m, iaa_device);
236
237 mutex_unlock(&iaa_devices_lock);
238
239 return 0;
240}
241
242static int iaa_crypto_stats_reset(void *data, u64 value)
243{
244 struct iaa_device *iaa_device;
245
246 reset_iaa_crypto_stats();
247
248 mutex_lock(&iaa_devices_lock);
249
250 list_for_each_entry(iaa_device, &iaa_devices, list)
251 reset_device_stats(iaa_device);
252
253 mutex_unlock(&iaa_devices_lock);
254
255 return 0;
256}
257
258static int wq_stats_open(struct inode *inode, struct file *file)
259{
260 return single_open(file, wq_stats_show, file);
261}
262
263static const struct file_operations wq_stats_fops = {
264 .open = wq_stats_open,
265 .read = seq_read,
266 .llseek = seq_lseek,
267 .release = single_release,
268};
269
270DEFINE_DEBUGFS_ATTRIBUTE(wq_stats_reset_fops, NULL, iaa_crypto_stats_reset, "%llu\n");
271
272int __init iaa_crypto_debugfs_init(void)
273{
274 if (!debugfs_initialized())
275 return -ENODEV;
276
277 iaa_crypto_debugfs_root = debugfs_create_dir("iaa_crypto", NULL);
278 if (!iaa_crypto_debugfs_root)
279 return -ENOMEM;
280
281 debugfs_create_u64("max_comp_delay_ns", 0644,
282 iaa_crypto_debugfs_root, &max_comp_delay_ns);
283 debugfs_create_u64("max_decomp_delay_ns", 0644,
284 iaa_crypto_debugfs_root, &max_decomp_delay_ns);
285 debugfs_create_u64("max_acomp_delay_ns", 0644,
286 iaa_crypto_debugfs_root, &max_comp_delay_ns);
287 debugfs_create_u64("max_adecomp_delay_ns", 0644,
288 iaa_crypto_debugfs_root, &max_decomp_delay_ns);
289 debugfs_create_u64("total_comp_calls", 0644,
290 iaa_crypto_debugfs_root, &total_comp_calls);
291 debugfs_create_u64("total_decomp_calls", 0644,
292 iaa_crypto_debugfs_root, &total_decomp_calls);
293 debugfs_create_u64("total_sw_decomp_calls", 0644,
294 iaa_crypto_debugfs_root, &total_sw_decomp_calls);
295 debugfs_create_u64("total_comp_bytes_out", 0644,
296 iaa_crypto_debugfs_root, &total_comp_bytes_out);
297 debugfs_create_u64("total_decomp_bytes_in", 0644,
298 iaa_crypto_debugfs_root, &total_decomp_bytes_in);
299 debugfs_create_file("wq_stats", 0644, iaa_crypto_debugfs_root, NULL,
300 &wq_stats_fops);
301 debugfs_create_file("stats_reset", 0644, iaa_crypto_debugfs_root, NULL,
302 &wq_stats_reset_fops);
303
304 return 0;
305}
306
307void __exit iaa_crypto_debugfs_cleanup(void)
308{
309 debugfs_remove_recursive(iaa_crypto_debugfs_root);
310}
311
312MODULE_LICENSE("GPL");