1 /*
2 * Copyright (c) 2014 Redpine Signals Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include "rsi_debugfs.h"
18 #include "rsi_sdio.h"
19
20 /**
21 * rsi_sdio_stats_read() - This function returns the sdio status of the driver.
22 * @seq: Pointer to the sequence file structure.
23 * @data: Pointer to the data.
24 *
25 * Return: 0 on success, -1 on failure.
26 */
rsi_sdio_stats_read(struct seq_file * seq,void * data)27 static int rsi_sdio_stats_read(struct seq_file *seq, void *data)
28 {
29 struct rsi_common *common = seq->private;
30 struct rsi_hw *adapter = common->priv;
31 struct rsi_91x_sdiodev *dev = adapter->rsi_dev;
32
33 seq_printf(seq, "total_sdio_interrupts: %d\n",
34 dev->rx_info.sdio_int_counter);
35 seq_printf(seq, "sdio_msdu_pending_intr_count: %d\n",
36 dev->rx_info.total_sdio_msdu_pending_intr);
37 seq_printf(seq, "sdio_buff_full_count : %d\n",
38 dev->rx_info.buf_full_counter);
39 seq_printf(seq, "sdio_buf_semi_full_count %d\n",
40 dev->rx_info.buf_semi_full_counter);
41 seq_printf(seq, "sdio_unknown_intr_count: %d\n",
42 dev->rx_info.total_sdio_unknown_intr);
43 /* RX Path Stats */
44 seq_printf(seq, "BUFFER FULL STATUS : %d\n",
45 dev->rx_info.buffer_full);
46 seq_printf(seq, "SEMI BUFFER FULL STATUS : %d\n",
47 dev->rx_info.semi_buffer_full);
48 seq_printf(seq, "MGMT BUFFER FULL STATUS : %d\n",
49 dev->rx_info.mgmt_buffer_full);
50 seq_printf(seq, "BUFFER FULL COUNTER : %d\n",
51 dev->rx_info.buf_full_counter);
52 seq_printf(seq, "BUFFER SEMI FULL COUNTER : %d\n",
53 dev->rx_info.buf_semi_full_counter);
54 seq_printf(seq, "MGMT BUFFER FULL COUNTER : %d\n",
55 dev->rx_info.mgmt_buf_full_counter);
56
57 return 0;
58 }
59
60 /**
61 * rsi_sdio_stats_open() - This function calls single open function of seq_file
62 * to open file and read contents from it.
63 * @inode: Pointer to the inode structure.
64 * @file: Pointer to the file structure.
65 *
66 * Return: Pointer to the opened file status: 0 on success, ENOMEM on failure.
67 */
rsi_sdio_stats_open(struct inode * inode,struct file * file)68 static int rsi_sdio_stats_open(struct inode *inode,
69 struct file *file)
70 {
71 return single_open(file, rsi_sdio_stats_read, inode->i_private);
72 }
73
74 /**
75 * rsi_version_read() - This function gives driver and firmware version number.
76 * @seq: Pointer to the sequence file structure.
77 * @data: Pointer to the data.
78 *
79 * Return: 0 on success, -1 on failure.
80 */
rsi_version_read(struct seq_file * seq,void * data)81 static int rsi_version_read(struct seq_file *seq, void *data)
82 {
83 struct rsi_common *common = seq->private;
84
85 seq_printf(seq, "LMAC : %d.%d.%d.%d\n",
86 common->lmac_ver.major,
87 common->lmac_ver.minor,
88 common->lmac_ver.release_num,
89 common->lmac_ver.patch_num);
90
91 return 0;
92 }
93
94 /**
95 * rsi_version_open() - This function calls single open function of seq_file to
96 * open file and read contents from it.
97 * @inode: Pointer to the inode structure.
98 * @file: Pointer to the file structure.
99 *
100 * Return: Pointer to the opened file status: 0 on success, ENOMEM on failure.
101 */
rsi_version_open(struct inode * inode,struct file * file)102 static int rsi_version_open(struct inode *inode,
103 struct file *file)
104 {
105 return single_open(file, rsi_version_read, inode->i_private);
106 }
107
108 /**
109 * rsi_stats_read() - This function return the status of the driver.
110 * @seq: Pointer to the sequence file structure.
111 * @data: Pointer to the data.
112 *
113 * Return: 0 on success, -1 on failure.
114 */
rsi_stats_read(struct seq_file * seq,void * data)115 static int rsi_stats_read(struct seq_file *seq, void *data)
116 {
117 struct rsi_common *common = seq->private;
118
119 static const unsigned char fsm_state[][32] = {
120 "FSM_FW_NOT_LOADED",
121 "FSM_CARD_NOT_READY",
122 "FSM_COMMON_DEV_PARAMS_SENT",
123 "FSM_BOOT_PARAMS_SENT",
124 "FSM_EEPROM_READ_MAC_ADDR",
125 "FSM_EEPROM_READ_RF_TYPE",
126 "FSM_RESET_MAC_SENT",
127 "FSM_RADIO_CAPS_SENT",
128 "FSM_BB_RF_PROG_SENT",
129 "FSM_MAC_INIT_DONE"
130 };
131 seq_puts(seq, "==> RSI STA DRIVER STATUS <==\n");
132 seq_puts(seq, "DRIVER_FSM_STATE: ");
133
134 BUILD_BUG_ON(ARRAY_SIZE(fsm_state) != NUM_FSM_STATES);
135
136 if (common->fsm_state <= FSM_MAC_INIT_DONE)
137 seq_printf(seq, "%s", fsm_state[common->fsm_state]);
138
139 seq_printf(seq, "(%d)\n\n", common->fsm_state);
140
141 /* Mgmt TX Path Stats */
142 seq_printf(seq, "total_mgmt_pkt_send : %d\n",
143 common->tx_stats.total_tx_pkt_send[MGMT_SOFT_Q]);
144 seq_printf(seq, "total_mgmt_pkt_queued : %d\n",
145 skb_queue_len(&common->tx_queue[MGMT_SOFT_Q]));
146 seq_printf(seq, "total_mgmt_pkt_freed : %d\n",
147 common->tx_stats.total_tx_pkt_freed[MGMT_SOFT_Q]);
148
149 /* Data TX Path Stats */
150 seq_printf(seq, "total_data_vo_pkt_send: %8d\t",
151 common->tx_stats.total_tx_pkt_send[VO_Q]);
152 seq_printf(seq, "total_data_vo_pkt_queued: %8d\t",
153 skb_queue_len(&common->tx_queue[VO_Q]));
154 seq_printf(seq, "total_vo_pkt_freed: %8d\n",
155 common->tx_stats.total_tx_pkt_freed[VO_Q]);
156 seq_printf(seq, "total_data_vi_pkt_send: %8d\t",
157 common->tx_stats.total_tx_pkt_send[VI_Q]);
158 seq_printf(seq, "total_data_vi_pkt_queued: %8d\t",
159 skb_queue_len(&common->tx_queue[VI_Q]));
160 seq_printf(seq, "total_vi_pkt_freed: %8d\n",
161 common->tx_stats.total_tx_pkt_freed[VI_Q]);
162 seq_printf(seq, "total_data_be_pkt_send: %8d\t",
163 common->tx_stats.total_tx_pkt_send[BE_Q]);
164 seq_printf(seq, "total_data_be_pkt_queued: %8d\t",
165 skb_queue_len(&common->tx_queue[BE_Q]));
166 seq_printf(seq, "total_be_pkt_freed: %8d\n",
167 common->tx_stats.total_tx_pkt_freed[BE_Q]);
168 seq_printf(seq, "total_data_bk_pkt_send: %8d\t",
169 common->tx_stats.total_tx_pkt_send[BK_Q]);
170 seq_printf(seq, "total_data_bk_pkt_queued: %8d\t",
171 skb_queue_len(&common->tx_queue[BK_Q]));
172 seq_printf(seq, "total_bk_pkt_freed: %8d\n",
173 common->tx_stats.total_tx_pkt_freed[BK_Q]);
174
175 seq_puts(seq, "\n");
176 return 0;
177 }
178
179 /**
180 * rsi_stats_open() - This function calls single open function of seq_file to
181 * open file and read contents from it.
182 * @inode: Pointer to the inode structure.
183 * @file: Pointer to the file structure.
184 *
185 * Return: Pointer to the opened file status: 0 on success, ENOMEM on failure.
186 */
rsi_stats_open(struct inode * inode,struct file * file)187 static int rsi_stats_open(struct inode *inode,
188 struct file *file)
189 {
190 return single_open(file, rsi_stats_read, inode->i_private);
191 }
192
193 /**
194 * rsi_debug_zone_read() - This function display the currently enabled debug zones.
195 * @seq: Pointer to the sequence file structure.
196 * @data: Pointer to the data.
197 *
198 * Return: 0 on success, -1 on failure.
199 */
rsi_debug_zone_read(struct seq_file * seq,void * data)200 static int rsi_debug_zone_read(struct seq_file *seq, void *data)
201 {
202 rsi_dbg(FSM_ZONE, "%x: rsi_enabled zone", rsi_zone_enabled);
203 seq_printf(seq, "The zones available are %#x\n",
204 rsi_zone_enabled);
205 return 0;
206 }
207
208 /**
209 * rsi_debug_read() - This function calls single open function of seq_file to
210 * open file and read contents from it.
211 * @inode: Pointer to the inode structure.
212 * @file: Pointer to the file structure.
213 *
214 * Return: Pointer to the opened file status: 0 on success, ENOMEM on failure.
215 */
rsi_debug_read(struct inode * inode,struct file * file)216 static int rsi_debug_read(struct inode *inode,
217 struct file *file)
218 {
219 return single_open(file, rsi_debug_zone_read, inode->i_private);
220 }
221
222 /**
223 * rsi_debug_zone_write() - This function writes into hal queues as per user
224 * requirement.
225 * @filp: Pointer to the file structure.
226 * @buff: Pointer to the character buffer.
227 * @len: Length of the data to be written into buffer.
228 * @data: Pointer to the data.
229 *
230 * Return: len: Number of bytes read.
231 */
rsi_debug_zone_write(struct file * filp,const char __user * buff,size_t len,loff_t * data)232 static ssize_t rsi_debug_zone_write(struct file *filp,
233 const char __user *buff,
234 size_t len,
235 loff_t *data)
236 {
237 unsigned long dbg_zone;
238 int ret;
239
240 if (!len)
241 return 0;
242
243 ret = kstrtoul_from_user(buff, len, 16, &dbg_zone);
244
245 if (ret)
246 return ret;
247
248 rsi_zone_enabled = dbg_zone;
249 return len;
250 }
251
252 #define FOPS(fopen) { \
253 .owner = THIS_MODULE, \
254 .open = (fopen), \
255 .read = seq_read, \
256 .llseek = seq_lseek, \
257 }
258
259 #define FOPS_RW(fopen, fwrite) { \
260 .owner = THIS_MODULE, \
261 .open = (fopen), \
262 .read = seq_read, \
263 .llseek = seq_lseek, \
264 .write = (fwrite), \
265 }
266
267 static const struct rsi_dbg_files dev_debugfs_files[] = {
268 {"version", 0644, FOPS(rsi_version_open),},
269 {"stats", 0644, FOPS(rsi_stats_open),},
270 {"debug_zone", 0666, FOPS_RW(rsi_debug_read, rsi_debug_zone_write),},
271 {"sdio_stats", 0644, FOPS(rsi_sdio_stats_open),},
272 };
273
274 /**
275 * rsi_init_dbgfs() - This function initializes the dbgfs entry.
276 * @adapter: Pointer to the adapter structure.
277 *
278 * Return: 0 on success, -1 on failure.
279 */
rsi_init_dbgfs(struct rsi_hw * adapter)280 int rsi_init_dbgfs(struct rsi_hw *adapter)
281 {
282 struct rsi_common *common = adapter->priv;
283 struct rsi_debugfs *dev_dbgfs;
284 char devdir[6];
285 int ii;
286 const struct rsi_dbg_files *files;
287
288 dev_dbgfs = kzalloc(sizeof(*dev_dbgfs), GFP_KERNEL);
289 if (!dev_dbgfs)
290 return -ENOMEM;
291
292 adapter->dfsentry = dev_dbgfs;
293
294 snprintf(devdir, sizeof(devdir), "%s",
295 wiphy_name(adapter->hw->wiphy));
296
297 dev_dbgfs->subdir = debugfs_create_dir(devdir, NULL);
298
299 for (ii = 0; ii < adapter->num_debugfs_entries; ii++) {
300 files = &dev_debugfs_files[ii];
301 dev_dbgfs->rsi_files[ii] =
302 debugfs_create_file(files->name,
303 files->perms,
304 dev_dbgfs->subdir,
305 common,
306 &files->fops);
307 }
308 return 0;
309 }
310 EXPORT_SYMBOL_GPL(rsi_init_dbgfs);
311
312 /**
313 * rsi_remove_dbgfs() - Removes the previously created dbgfs file entries
314 * in the reverse order of creation.
315 * @adapter: Pointer to the adapter structure.
316 *
317 * Return: None.
318 */
rsi_remove_dbgfs(struct rsi_hw * adapter)319 void rsi_remove_dbgfs(struct rsi_hw *adapter)
320 {
321 struct rsi_debugfs *dev_dbgfs = adapter->dfsentry;
322
323 if (!dev_dbgfs)
324 return;
325
326 debugfs_remove_recursive(dev_dbgfs->subdir);
327 }
328 EXPORT_SYMBOL_GPL(rsi_remove_dbgfs);
329