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1/*
2 * drivers/s390/cio/qdio_debug.c
3 *
4 * Copyright IBM Corp. 2008,2009
5 *
6 * Author: Jan Glauber (jang@linux.vnet.ibm.com)
7 */
8#include <linux/seq_file.h>
9#include <linux/debugfs.h>
10#include <asm/debug.h>
11#include "qdio_debug.h"
12#include "qdio.h"
13
14debug_info_t *qdio_dbf_setup;
15debug_info_t *qdio_dbf_error;
16
17static struct dentry *debugfs_root;
18#define QDIO_DEBUGFS_NAME_LEN 10
19
20void qdio_allocate_dbf(struct qdio_initialize *init_data,
21 struct qdio_irq *irq_ptr)
22{
23 char text[20];
24
25 DBF_EVENT("qfmt:%1d", init_data->q_format);
26 DBF_HEX(init_data->adapter_name, 8);
27 DBF_EVENT("qpff%4x", init_data->qib_param_field_format);
28 DBF_HEX(&init_data->qib_param_field, sizeof(void *));
29 DBF_HEX(&init_data->input_slib_elements, sizeof(void *));
30 DBF_HEX(&init_data->output_slib_elements, sizeof(void *));
31 DBF_EVENT("niq:%1d noq:%1d", init_data->no_input_qs,
32 init_data->no_output_qs);
33 DBF_HEX(&init_data->input_handler, sizeof(void *));
34 DBF_HEX(&init_data->output_handler, sizeof(void *));
35 DBF_HEX(&init_data->int_parm, sizeof(long));
36 DBF_HEX(&init_data->input_sbal_addr_array, sizeof(void *));
37 DBF_HEX(&init_data->output_sbal_addr_array, sizeof(void *));
38 DBF_EVENT("irq:%8lx", (unsigned long)irq_ptr);
39
40 /* allocate trace view for the interface */
41 snprintf(text, 20, "qdio_%s", dev_name(&init_data->cdev->dev));
42 irq_ptr->debug_area = debug_register(text, 2, 1, 16);
43 debug_register_view(irq_ptr->debug_area, &debug_hex_ascii_view);
44 debug_set_level(irq_ptr->debug_area, DBF_WARN);
45 DBF_DEV_EVENT(DBF_ERR, irq_ptr, "dbf created");
46}
47
48static int qstat_show(struct seq_file *m, void *v)
49{
50 unsigned char state;
51 struct qdio_q *q = m->private;
52 int i;
53
54 if (!q)
55 return 0;
56
57 seq_printf(m, "DSCI: %d nr_used: %d\n",
58 *(u32 *)q->irq_ptr->dsci, atomic_read(&q->nr_buf_used));
59 seq_printf(m, "ftc: %d last_move: %d\n",
60 q->first_to_check, q->last_move);
61 if (q->is_input_q) {
62 seq_printf(m, "polling: %d ack start: %d ack count: %d\n",
63 q->u.in.polling, q->u.in.ack_start,
64 q->u.in.ack_count);
65 seq_printf(m, "IRQs disabled: %u\n",
66 test_bit(QDIO_QUEUE_IRQS_DISABLED,
67 &q->u.in.queue_irq_state));
68 }
69 seq_printf(m, "SBAL states:\n");
70 seq_printf(m, "|0 |8 |16 |24 |32 |40 |48 |56 63|\n");
71
72 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
73 debug_get_buf_state(q, i, &state);
74 switch (state) {
75 case SLSB_P_INPUT_NOT_INIT:
76 case SLSB_P_OUTPUT_NOT_INIT:
77 seq_printf(m, "N");
78 break;
79 case SLSB_P_INPUT_PRIMED:
80 case SLSB_CU_OUTPUT_PRIMED:
81 seq_printf(m, "+");
82 break;
83 case SLSB_P_INPUT_ACK:
84 seq_printf(m, "A");
85 break;
86 case SLSB_P_INPUT_ERROR:
87 case SLSB_P_OUTPUT_ERROR:
88 seq_printf(m, "x");
89 break;
90 case SLSB_CU_INPUT_EMPTY:
91 case SLSB_P_OUTPUT_EMPTY:
92 seq_printf(m, "-");
93 break;
94 case SLSB_P_INPUT_HALTED:
95 case SLSB_P_OUTPUT_HALTED:
96 seq_printf(m, ".");
97 break;
98 default:
99 seq_printf(m, "?");
100 }
101 if (i == 63)
102 seq_printf(m, "\n");
103 }
104 seq_printf(m, "\n");
105 seq_printf(m, "|64 |72 |80 |88 |96 |104 |112 | 127|\n");
106
107 seq_printf(m, "\nSBAL statistics:");
108 if (!q->irq_ptr->perf_stat_enabled) {
109 seq_printf(m, " disabled\n");
110 return 0;
111 }
112
113 seq_printf(m, "\n1 2.. 4.. 8.. "
114 "16.. 32.. 64.. 127\n");
115 for (i = 0; i < ARRAY_SIZE(q->q_stats.nr_sbals); i++)
116 seq_printf(m, "%-10u ", q->q_stats.nr_sbals[i]);
117 seq_printf(m, "\nError NOP Total\n%-10u %-10u %-10u\n\n",
118 q->q_stats.nr_sbal_error, q->q_stats.nr_sbal_nop,
119 q->q_stats.nr_sbal_total);
120 return 0;
121}
122
123static int qstat_seq_open(struct inode *inode, struct file *filp)
124{
125 return single_open(filp, qstat_show,
126 filp->f_path.dentry->d_inode->i_private);
127}
128
129static const struct file_operations debugfs_fops = {
130 .owner = THIS_MODULE,
131 .open = qstat_seq_open,
132 .read = seq_read,
133 .llseek = seq_lseek,
134 .release = single_release,
135};
136
137static char *qperf_names[] = {
138 "Assumed adapter interrupts",
139 "QDIO interrupts",
140 "Requested PCIs",
141 "Inbound tasklet runs",
142 "Inbound tasklet resched",
143 "Inbound tasklet resched2",
144 "Outbound tasklet runs",
145 "SIGA read",
146 "SIGA write",
147 "SIGA sync",
148 "Inbound calls",
149 "Inbound handler",
150 "Inbound stop_polling",
151 "Inbound queue full",
152 "Outbound calls",
153 "Outbound handler",
154 "Outbound queue full",
155 "Outbound fast_requeue",
156 "Outbound target_full",
157 "QEBSM eqbs",
158 "QEBSM eqbs partial",
159 "QEBSM sqbs",
160 "QEBSM sqbs partial",
161 "Discarded interrupts"
162};
163
164static int qperf_show(struct seq_file *m, void *v)
165{
166 struct qdio_irq *irq_ptr = m->private;
167 unsigned int *stat;
168 int i;
169
170 if (!irq_ptr)
171 return 0;
172 if (!irq_ptr->perf_stat_enabled) {
173 seq_printf(m, "disabled\n");
174 return 0;
175 }
176 stat = (unsigned int *)&irq_ptr->perf_stat;
177
178 for (i = 0; i < ARRAY_SIZE(qperf_names); i++)
179 seq_printf(m, "%26s:\t%u\n",
180 qperf_names[i], *(stat + i));
181 return 0;
182}
183
184static ssize_t qperf_seq_write(struct file *file, const char __user *ubuf,
185 size_t count, loff_t *off)
186{
187 struct seq_file *seq = file->private_data;
188 struct qdio_irq *irq_ptr = seq->private;
189 struct qdio_q *q;
190 unsigned long val;
191 int ret, i;
192
193 if (!irq_ptr)
194 return 0;
195
196 ret = kstrtoul_from_user(ubuf, count, 10, &val);
197 if (ret)
198 return ret;
199
200 switch (val) {
201 case 0:
202 irq_ptr->perf_stat_enabled = 0;
203 memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat));
204 for_each_input_queue(irq_ptr, q, i)
205 memset(&q->q_stats, 0, sizeof(q->q_stats));
206 for_each_output_queue(irq_ptr, q, i)
207 memset(&q->q_stats, 0, sizeof(q->q_stats));
208 break;
209 case 1:
210 irq_ptr->perf_stat_enabled = 1;
211 break;
212 }
213 return count;
214}
215
216static int qperf_seq_open(struct inode *inode, struct file *filp)
217{
218 return single_open(filp, qperf_show,
219 filp->f_path.dentry->d_inode->i_private);
220}
221
222static struct file_operations debugfs_perf_fops = {
223 .owner = THIS_MODULE,
224 .open = qperf_seq_open,
225 .read = seq_read,
226 .write = qperf_seq_write,
227 .llseek = seq_lseek,
228 .release = single_release,
229};
230static void setup_debugfs_entry(struct qdio_q *q, struct ccw_device *cdev)
231{
232 char name[QDIO_DEBUGFS_NAME_LEN];
233
234 snprintf(name, QDIO_DEBUGFS_NAME_LEN, "%s_%d",
235 q->is_input_q ? "input" : "output",
236 q->nr);
237 q->debugfs_q = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR,
238 q->irq_ptr->debugfs_dev, q, &debugfs_fops);
239 if (IS_ERR(q->debugfs_q))
240 q->debugfs_q = NULL;
241}
242
243void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
244{
245 struct qdio_q *q;
246 int i;
247
248 irq_ptr->debugfs_dev = debugfs_create_dir(dev_name(&cdev->dev),
249 debugfs_root);
250 if (IS_ERR(irq_ptr->debugfs_dev))
251 irq_ptr->debugfs_dev = NULL;
252
253 irq_ptr->debugfs_perf = debugfs_create_file("statistics",
254 S_IFREG | S_IRUGO | S_IWUSR,
255 irq_ptr->debugfs_dev, irq_ptr,
256 &debugfs_perf_fops);
257 if (IS_ERR(irq_ptr->debugfs_perf))
258 irq_ptr->debugfs_perf = NULL;
259
260 for_each_input_queue(irq_ptr, q, i)
261 setup_debugfs_entry(q, cdev);
262 for_each_output_queue(irq_ptr, q, i)
263 setup_debugfs_entry(q, cdev);
264}
265
266void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
267{
268 struct qdio_q *q;
269 int i;
270
271 for_each_input_queue(irq_ptr, q, i)
272 debugfs_remove(q->debugfs_q);
273 for_each_output_queue(irq_ptr, q, i)
274 debugfs_remove(q->debugfs_q);
275 debugfs_remove(irq_ptr->debugfs_perf);
276 debugfs_remove(irq_ptr->debugfs_dev);
277}
278
279int __init qdio_debug_init(void)
280{
281 debugfs_root = debugfs_create_dir("qdio", NULL);
282
283 qdio_dbf_setup = debug_register("qdio_setup", 16, 1, 16);
284 debug_register_view(qdio_dbf_setup, &debug_hex_ascii_view);
285 debug_set_level(qdio_dbf_setup, DBF_INFO);
286 DBF_EVENT("dbf created\n");
287
288 qdio_dbf_error = debug_register("qdio_error", 4, 1, 16);
289 debug_register_view(qdio_dbf_error, &debug_hex_ascii_view);
290 debug_set_level(qdio_dbf_error, DBF_INFO);
291 DBF_ERROR("dbf created\n");
292 return 0;
293}
294
295void qdio_debug_exit(void)
296{
297 debugfs_remove(debugfs_root);
298 if (qdio_dbf_setup)
299 debug_unregister(qdio_dbf_setup);
300 if (qdio_dbf_error)
301 debug_unregister(qdio_dbf_error);
302}
1/*
2 * Copyright IBM Corp. 2008, 2009
3 *
4 * Author: Jan Glauber (jang@linux.vnet.ibm.com)
5 */
6#include <linux/seq_file.h>
7#include <linux/debugfs.h>
8#include <linux/uaccess.h>
9#include <linux/export.h>
10#include <asm/debug.h>
11#include "qdio_debug.h"
12#include "qdio.h"
13
14debug_info_t *qdio_dbf_setup;
15debug_info_t *qdio_dbf_error;
16
17static struct dentry *debugfs_root;
18#define QDIO_DEBUGFS_NAME_LEN 10
19
20void qdio_allocate_dbf(struct qdio_initialize *init_data,
21 struct qdio_irq *irq_ptr)
22{
23 char text[20];
24
25 DBF_EVENT("qfmt:%1d", init_data->q_format);
26 DBF_HEX(init_data->adapter_name, 8);
27 DBF_EVENT("qpff%4x", init_data->qib_param_field_format);
28 DBF_HEX(&init_data->qib_param_field, sizeof(void *));
29 DBF_HEX(&init_data->input_slib_elements, sizeof(void *));
30 DBF_HEX(&init_data->output_slib_elements, sizeof(void *));
31 DBF_EVENT("niq:%1d noq:%1d", init_data->no_input_qs,
32 init_data->no_output_qs);
33 DBF_HEX(&init_data->input_handler, sizeof(void *));
34 DBF_HEX(&init_data->output_handler, sizeof(void *));
35 DBF_HEX(&init_data->int_parm, sizeof(long));
36 DBF_HEX(&init_data->input_sbal_addr_array, sizeof(void *));
37 DBF_HEX(&init_data->output_sbal_addr_array, sizeof(void *));
38 DBF_EVENT("irq:%8lx", (unsigned long)irq_ptr);
39
40 /* allocate trace view for the interface */
41 snprintf(text, 20, "qdio_%s", dev_name(&init_data->cdev->dev));
42 irq_ptr->debug_area = debug_register(text, 2, 1, 16);
43 debug_register_view(irq_ptr->debug_area, &debug_hex_ascii_view);
44 debug_set_level(irq_ptr->debug_area, DBF_WARN);
45 DBF_DEV_EVENT(DBF_ERR, irq_ptr, "dbf created");
46}
47
48static int qstat_show(struct seq_file *m, void *v)
49{
50 unsigned char state;
51 struct qdio_q *q = m->private;
52 int i;
53
54 if (!q)
55 return 0;
56
57 seq_printf(m, "Timestamp: %Lx Last AI: %Lx\n",
58 q->timestamp, last_ai_time);
59 seq_printf(m, "nr_used: %d ftc: %d last_move: %d\n",
60 atomic_read(&q->nr_buf_used),
61 q->first_to_check, q->last_move);
62 if (q->is_input_q) {
63 seq_printf(m, "polling: %d ack start: %d ack count: %d\n",
64 q->u.in.polling, q->u.in.ack_start,
65 q->u.in.ack_count);
66 seq_printf(m, "DSCI: %d IRQs disabled: %u\n",
67 *(u32 *)q->irq_ptr->dsci,
68 test_bit(QDIO_QUEUE_IRQS_DISABLED,
69 &q->u.in.queue_irq_state));
70 }
71 seq_printf(m, "SBAL states:\n");
72 seq_printf(m, "|0 |8 |16 |24 |32 |40 |48 |56 63|\n");
73
74 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; i++) {
75 debug_get_buf_state(q, i, &state);
76 switch (state) {
77 case SLSB_P_INPUT_NOT_INIT:
78 case SLSB_P_OUTPUT_NOT_INIT:
79 seq_printf(m, "N");
80 break;
81 case SLSB_P_OUTPUT_PENDING:
82 seq_printf(m, "P");
83 break;
84 case SLSB_P_INPUT_PRIMED:
85 case SLSB_CU_OUTPUT_PRIMED:
86 seq_printf(m, "+");
87 break;
88 case SLSB_P_INPUT_ACK:
89 seq_printf(m, "A");
90 break;
91 case SLSB_P_INPUT_ERROR:
92 case SLSB_P_OUTPUT_ERROR:
93 seq_printf(m, "x");
94 break;
95 case SLSB_CU_INPUT_EMPTY:
96 case SLSB_P_OUTPUT_EMPTY:
97 seq_printf(m, "-");
98 break;
99 case SLSB_P_INPUT_HALTED:
100 case SLSB_P_OUTPUT_HALTED:
101 seq_printf(m, ".");
102 break;
103 default:
104 seq_printf(m, "?");
105 }
106 if (i == 63)
107 seq_printf(m, "\n");
108 }
109 seq_printf(m, "\n");
110 seq_printf(m, "|64 |72 |80 |88 |96 |104 |112 | 127|\n");
111
112 seq_printf(m, "\nSBAL statistics:");
113 if (!q->irq_ptr->perf_stat_enabled) {
114 seq_printf(m, " disabled\n");
115 return 0;
116 }
117
118 seq_printf(m, "\n1 2.. 4.. 8.. "
119 "16.. 32.. 64.. 127\n");
120 for (i = 0; i < ARRAY_SIZE(q->q_stats.nr_sbals); i++)
121 seq_printf(m, "%-10u ", q->q_stats.nr_sbals[i]);
122 seq_printf(m, "\nError NOP Total\n%-10u %-10u %-10u\n\n",
123 q->q_stats.nr_sbal_error, q->q_stats.nr_sbal_nop,
124 q->q_stats.nr_sbal_total);
125 return 0;
126}
127
128static int qstat_seq_open(struct inode *inode, struct file *filp)
129{
130 return single_open(filp, qstat_show,
131 file_inode(filp)->i_private);
132}
133
134static const struct file_operations debugfs_fops = {
135 .owner = THIS_MODULE,
136 .open = qstat_seq_open,
137 .read = seq_read,
138 .llseek = seq_lseek,
139 .release = single_release,
140};
141
142static char *qperf_names[] = {
143 "Assumed adapter interrupts",
144 "QDIO interrupts",
145 "Requested PCIs",
146 "Inbound tasklet runs",
147 "Inbound tasklet resched",
148 "Inbound tasklet resched2",
149 "Outbound tasklet runs",
150 "SIGA read",
151 "SIGA write",
152 "SIGA sync",
153 "Inbound calls",
154 "Inbound handler",
155 "Inbound stop_polling",
156 "Inbound queue full",
157 "Outbound calls",
158 "Outbound handler",
159 "Outbound queue full",
160 "Outbound fast_requeue",
161 "Outbound target_full",
162 "QEBSM eqbs",
163 "QEBSM eqbs partial",
164 "QEBSM sqbs",
165 "QEBSM sqbs partial",
166 "Discarded interrupts"
167};
168
169static int qperf_show(struct seq_file *m, void *v)
170{
171 struct qdio_irq *irq_ptr = m->private;
172 unsigned int *stat;
173 int i;
174
175 if (!irq_ptr)
176 return 0;
177 if (!irq_ptr->perf_stat_enabled) {
178 seq_printf(m, "disabled\n");
179 return 0;
180 }
181 stat = (unsigned int *)&irq_ptr->perf_stat;
182
183 for (i = 0; i < ARRAY_SIZE(qperf_names); i++)
184 seq_printf(m, "%26s:\t%u\n",
185 qperf_names[i], *(stat + i));
186 return 0;
187}
188
189static ssize_t qperf_seq_write(struct file *file, const char __user *ubuf,
190 size_t count, loff_t *off)
191{
192 struct seq_file *seq = file->private_data;
193 struct qdio_irq *irq_ptr = seq->private;
194 struct qdio_q *q;
195 unsigned long val;
196 int ret, i;
197
198 if (!irq_ptr)
199 return 0;
200
201 ret = kstrtoul_from_user(ubuf, count, 10, &val);
202 if (ret)
203 return ret;
204
205 switch (val) {
206 case 0:
207 irq_ptr->perf_stat_enabled = 0;
208 memset(&irq_ptr->perf_stat, 0, sizeof(irq_ptr->perf_stat));
209 for_each_input_queue(irq_ptr, q, i)
210 memset(&q->q_stats, 0, sizeof(q->q_stats));
211 for_each_output_queue(irq_ptr, q, i)
212 memset(&q->q_stats, 0, sizeof(q->q_stats));
213 break;
214 case 1:
215 irq_ptr->perf_stat_enabled = 1;
216 break;
217 }
218 return count;
219}
220
221static int qperf_seq_open(struct inode *inode, struct file *filp)
222{
223 return single_open(filp, qperf_show,
224 file_inode(filp)->i_private);
225}
226
227static const struct file_operations debugfs_perf_fops = {
228 .owner = THIS_MODULE,
229 .open = qperf_seq_open,
230 .read = seq_read,
231 .write = qperf_seq_write,
232 .llseek = seq_lseek,
233 .release = single_release,
234};
235
236static void setup_debugfs_entry(struct qdio_q *q)
237{
238 char name[QDIO_DEBUGFS_NAME_LEN];
239
240 snprintf(name, QDIO_DEBUGFS_NAME_LEN, "%s_%d",
241 q->is_input_q ? "input" : "output",
242 q->nr);
243 q->debugfs_q = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR,
244 q->irq_ptr->debugfs_dev, q, &debugfs_fops);
245 if (IS_ERR(q->debugfs_q))
246 q->debugfs_q = NULL;
247}
248
249void qdio_setup_debug_entries(struct qdio_irq *irq_ptr, struct ccw_device *cdev)
250{
251 struct qdio_q *q;
252 int i;
253
254 irq_ptr->debugfs_dev = debugfs_create_dir(dev_name(&cdev->dev),
255 debugfs_root);
256 if (IS_ERR(irq_ptr->debugfs_dev))
257 irq_ptr->debugfs_dev = NULL;
258
259 irq_ptr->debugfs_perf = debugfs_create_file("statistics",
260 S_IFREG | S_IRUGO | S_IWUSR,
261 irq_ptr->debugfs_dev, irq_ptr,
262 &debugfs_perf_fops);
263 if (IS_ERR(irq_ptr->debugfs_perf))
264 irq_ptr->debugfs_perf = NULL;
265
266 for_each_input_queue(irq_ptr, q, i)
267 setup_debugfs_entry(q);
268 for_each_output_queue(irq_ptr, q, i)
269 setup_debugfs_entry(q);
270}
271
272void qdio_shutdown_debug_entries(struct qdio_irq *irq_ptr)
273{
274 struct qdio_q *q;
275 int i;
276
277 for_each_input_queue(irq_ptr, q, i)
278 debugfs_remove(q->debugfs_q);
279 for_each_output_queue(irq_ptr, q, i)
280 debugfs_remove(q->debugfs_q);
281 debugfs_remove(irq_ptr->debugfs_perf);
282 debugfs_remove(irq_ptr->debugfs_dev);
283}
284
285int __init qdio_debug_init(void)
286{
287 debugfs_root = debugfs_create_dir("qdio", NULL);
288
289 qdio_dbf_setup = debug_register("qdio_setup", 16, 1, 16);
290 debug_register_view(qdio_dbf_setup, &debug_hex_ascii_view);
291 debug_set_level(qdio_dbf_setup, DBF_INFO);
292 DBF_EVENT("dbf created\n");
293
294 qdio_dbf_error = debug_register("qdio_error", 4, 1, 16);
295 debug_register_view(qdio_dbf_error, &debug_hex_ascii_view);
296 debug_set_level(qdio_dbf_error, DBF_INFO);
297 DBF_ERROR("dbf created\n");
298 return 0;
299}
300
301void qdio_debug_exit(void)
302{
303 debugfs_remove(debugfs_root);
304 if (qdio_dbf_setup)
305 debug_unregister(qdio_dbf_setup);
306 if (qdio_dbf_error)
307 debug_unregister(qdio_dbf_error);
308}