1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/dcache.h>
3 #include <linux/debugfs.h>
4 #include <linux/delay.h>
5 #include <linux/hardirq.h>
7 #include <linux/string.h>
8 #include <linux/slab.h>
9 #include <linux/export.h>
15 static struct dentry *lbs_dir;
16 static char *szStates[] = {
22 static void lbs_debug_init(struct lbs_private *priv);
25 static ssize_t write_file_dummy(struct file *file, const char __user *buf,
26 size_t count, loff_t *ppos)
31 static const size_t len = PAGE_SIZE;
33 static ssize_t lbs_dev_info(struct file *file, char __user *userbuf,
34 size_t count, loff_t *ppos)
36 struct lbs_private *priv = file->private_data;
38 unsigned long addr = get_zeroed_page(GFP_KERNEL);
39 char *buf = (char *)addr;
44 pos += snprintf(buf+pos, len-pos, "state = %s\n",
45 szStates[priv->connect_status]);
46 pos += snprintf(buf+pos, len-pos, "region_code = %02x\n",
47 (u32) priv->regioncode);
49 res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
55 static ssize_t lbs_sleepparams_write(struct file *file,
56 const char __user *user_buf, size_t count,
59 struct lbs_private *priv = file->private_data;
61 struct sleep_params sp;
62 int p1, p2, p3, p4, p5, p6;
65 buf = memdup_user_nul(user_buf, min(count, len - 1));
69 ret = sscanf(buf, "%d %d %d %d %d %d", &p1, &p2, &p3, &p4, &p5, &p6);
76 sp.sp_stabletime = p3;
77 sp.sp_calcontrol = p4;
78 sp.sp_extsleepclk = p5;
81 ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_SET, &sp);
92 static ssize_t lbs_sleepparams_read(struct file *file, char __user *userbuf,
93 size_t count, loff_t *ppos)
95 struct lbs_private *priv = file->private_data;
98 struct sleep_params sp;
99 unsigned long addr = get_zeroed_page(GFP_KERNEL);
100 char *buf = (char *)addr;
104 ret = lbs_cmd_802_11_sleep_params(priv, CMD_ACT_GET, &sp);
108 pos += snprintf(buf, len, "%d %d %d %d %d %d\n", sp.sp_error,
109 sp.sp_offset, sp.sp_stabletime,
110 sp.sp_calcontrol, sp.sp_extsleepclk,
113 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
120 static ssize_t lbs_host_sleep_write(struct file *file,
121 const char __user *user_buf, size_t count,
124 struct lbs_private *priv = file->private_data;
129 buf = memdup_user_nul(user_buf, min(count, len - 1));
133 ret = sscanf(buf, "%d", &host_sleep);
140 ret = lbs_set_host_sleep(priv, 0);
141 else if (host_sleep == 1) {
142 if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
143 netdev_info(priv->dev,
144 "wake parameters not configured\n");
148 ret = lbs_set_host_sleep(priv, 1);
150 netdev_err(priv->dev, "invalid option\n");
162 static ssize_t lbs_host_sleep_read(struct file *file, char __user *userbuf,
163 size_t count, loff_t *ppos)
165 struct lbs_private *priv = file->private_data;
168 unsigned long addr = get_zeroed_page(GFP_KERNEL);
169 char *buf = (char *)addr;
173 pos += snprintf(buf, len, "%d\n", priv->is_host_sleep_activated);
175 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
182 * When calling CMD_802_11_SUBSCRIBE_EVENT with CMD_ACT_GET, me might
183 * get a bunch of vendor-specific TLVs (a.k.a. IEs) back from the
184 * firmware. Here's an example:
185 * 04 01 02 00 00 00 05 01 02 00 00 00 06 01 02 00
186 * 00 00 07 01 02 00 3c 00 00 00 00 00 00 00 03 03
187 * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
189 * The 04 01 is the TLV type (here TLV_TYPE_RSSI_LOW), 02 00 is the length,
190 * 00 00 are the data bytes of this TLV. For this TLV, their meaning is
191 * defined in mrvlietypes_thresholds
193 * This function searches in this TLV data chunk for a given TLV type
194 * and returns a pointer to the first data byte of the TLV, or to NULL
195 * if the TLV hasn't been found.
197 static void *lbs_tlv_find(uint16_t tlv_type, const uint8_t *tlv, uint16_t size)
199 struct mrvl_ie_header *tlv_h;
204 tlv_h = (struct mrvl_ie_header *) tlv;
207 if (tlv_h->type == cpu_to_le16(tlv_type))
209 length = le16_to_cpu(tlv_h->len) + sizeof(*tlv_h);
217 static ssize_t lbs_threshold_read(uint16_t tlv_type, uint16_t event_mask,
218 struct file *file, char __user *userbuf,
219 size_t count, loff_t *ppos)
221 struct cmd_ds_802_11_subscribe_event *subscribed;
222 struct mrvl_ie_thresholds *got;
223 struct lbs_private *priv = file->private_data;
231 buf = (char *)get_zeroed_page(GFP_KERNEL);
235 subscribed = kzalloc(sizeof(*subscribed), GFP_KERNEL);
241 subscribed->hdr.size = cpu_to_le16(sizeof(*subscribed));
242 subscribed->action = cpu_to_le16(CMD_ACT_GET);
244 ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, subscribed);
248 got = lbs_tlv_find(tlv_type, subscribed->tlv, sizeof(subscribed->tlv));
252 events = le16_to_cpu(subscribed->events);
254 pos += snprintf(buf, len, "%d %d %d\n", value, freq,
255 !!(events & event_mask));
258 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
264 free_page((unsigned long)buf);
269 static ssize_t lbs_threshold_write(uint16_t tlv_type, uint16_t event_mask,
271 const char __user *userbuf, size_t count,
274 struct cmd_ds_802_11_subscribe_event *events;
275 struct mrvl_ie_thresholds *tlv;
276 struct lbs_private *priv = file->private_data;
277 int value, freq, new_mask;
282 buf = memdup_user_nul(userbuf, min(count, len - 1));
286 ret = sscanf(buf, "%d %d %d", &value, &freq, &new_mask);
291 events = kzalloc(sizeof(*events), GFP_KERNEL);
297 events->hdr.size = cpu_to_le16(sizeof(*events));
298 events->action = cpu_to_le16(CMD_ACT_GET);
300 ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
304 curr_mask = le16_to_cpu(events->events);
307 new_mask = curr_mask | event_mask;
309 new_mask = curr_mask & ~event_mask;
311 /* Now everything is set and we can send stuff down to the firmware */
313 tlv = (void *)events->tlv;
315 events->action = cpu_to_le16(CMD_ACT_SET);
316 events->events = cpu_to_le16(new_mask);
317 tlv->header.type = cpu_to_le16(tlv_type);
318 tlv->header.len = cpu_to_le16(sizeof(*tlv) - sizeof(tlv->header));
320 if (tlv_type != TLV_TYPE_BCNMISS)
323 /* The command header, the action, the event mask, and one TLV */
324 events->hdr.size = cpu_to_le16(sizeof(events->hdr) + 4 + sizeof(*tlv));
326 ret = lbs_cmd_with_response(priv, CMD_802_11_SUBSCRIBE_EVENT, events);
338 static ssize_t lbs_lowrssi_read(struct file *file, char __user *userbuf,
339 size_t count, loff_t *ppos)
341 return lbs_threshold_read(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
342 file, userbuf, count, ppos);
346 static ssize_t lbs_lowrssi_write(struct file *file, const char __user *userbuf,
347 size_t count, loff_t *ppos)
349 return lbs_threshold_write(TLV_TYPE_RSSI_LOW, CMD_SUBSCRIBE_RSSI_LOW,
350 file, userbuf, count, ppos);
354 static ssize_t lbs_lowsnr_read(struct file *file, char __user *userbuf,
355 size_t count, loff_t *ppos)
357 return lbs_threshold_read(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
358 file, userbuf, count, ppos);
362 static ssize_t lbs_lowsnr_write(struct file *file, const char __user *userbuf,
363 size_t count, loff_t *ppos)
365 return lbs_threshold_write(TLV_TYPE_SNR_LOW, CMD_SUBSCRIBE_SNR_LOW,
366 file, userbuf, count, ppos);
370 static ssize_t lbs_failcount_read(struct file *file, char __user *userbuf,
371 size_t count, loff_t *ppos)
373 return lbs_threshold_read(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
374 file, userbuf, count, ppos);
378 static ssize_t lbs_failcount_write(struct file *file, const char __user *userbuf,
379 size_t count, loff_t *ppos)
381 return lbs_threshold_write(TLV_TYPE_FAILCOUNT, CMD_SUBSCRIBE_FAILCOUNT,
382 file, userbuf, count, ppos);
386 static ssize_t lbs_highrssi_read(struct file *file, char __user *userbuf,
387 size_t count, loff_t *ppos)
389 return lbs_threshold_read(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
390 file, userbuf, count, ppos);
394 static ssize_t lbs_highrssi_write(struct file *file, const char __user *userbuf,
395 size_t count, loff_t *ppos)
397 return lbs_threshold_write(TLV_TYPE_RSSI_HIGH, CMD_SUBSCRIBE_RSSI_HIGH,
398 file, userbuf, count, ppos);
402 static ssize_t lbs_highsnr_read(struct file *file, char __user *userbuf,
403 size_t count, loff_t *ppos)
405 return lbs_threshold_read(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
406 file, userbuf, count, ppos);
410 static ssize_t lbs_highsnr_write(struct file *file, const char __user *userbuf,
411 size_t count, loff_t *ppos)
413 return lbs_threshold_write(TLV_TYPE_SNR_HIGH, CMD_SUBSCRIBE_SNR_HIGH,
414 file, userbuf, count, ppos);
417 static ssize_t lbs_bcnmiss_read(struct file *file, char __user *userbuf,
418 size_t count, loff_t *ppos)
420 return lbs_threshold_read(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
421 file, userbuf, count, ppos);
425 static ssize_t lbs_bcnmiss_write(struct file *file, const char __user *userbuf,
426 size_t count, loff_t *ppos)
428 return lbs_threshold_write(TLV_TYPE_BCNMISS, CMD_SUBSCRIBE_BCNMISS,
429 file, userbuf, count, ppos);
433 static ssize_t lbs_rdmac_read(struct file *file, char __user *userbuf,
434 size_t count, loff_t *ppos)
436 struct lbs_private *priv = file->private_data;
439 unsigned long addr = get_zeroed_page(GFP_KERNEL);
440 char *buf = (char *)addr;
446 ret = lbs_get_reg(priv, CMD_MAC_REG_ACCESS, priv->mac_offset, &val);
449 pos = snprintf(buf, len, "MAC[0x%x] = 0x%08x\n",
450 priv->mac_offset, val);
451 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
457 static ssize_t lbs_rdmac_write(struct file *file,
458 const char __user *userbuf,
459 size_t count, loff_t *ppos)
461 struct lbs_private *priv = file->private_data;
464 buf = memdup_user_nul(userbuf, min(count, len - 1));
468 priv->mac_offset = simple_strtoul(buf, NULL, 16);
473 static ssize_t lbs_wrmac_write(struct file *file,
474 const char __user *userbuf,
475 size_t count, loff_t *ppos)
478 struct lbs_private *priv = file->private_data;
483 buf = memdup_user_nul(userbuf, min(count, len - 1));
487 res = sscanf(buf, "%x %x", &offset, &value);
493 res = lbs_set_reg(priv, CMD_MAC_REG_ACCESS, offset, value);
503 static ssize_t lbs_rdbbp_read(struct file *file, char __user *userbuf,
504 size_t count, loff_t *ppos)
506 struct lbs_private *priv = file->private_data;
509 unsigned long addr = get_zeroed_page(GFP_KERNEL);
510 char *buf = (char *)addr;
516 ret = lbs_get_reg(priv, CMD_BBP_REG_ACCESS, priv->bbp_offset, &val);
519 pos = snprintf(buf, len, "BBP[0x%x] = 0x%08x\n",
520 priv->bbp_offset, val);
521 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
528 static ssize_t lbs_rdbbp_write(struct file *file,
529 const char __user *userbuf,
530 size_t count, loff_t *ppos)
532 struct lbs_private *priv = file->private_data;
535 buf = memdup_user_nul(userbuf, min(count, len - 1));
539 priv->bbp_offset = simple_strtoul(buf, NULL, 16);
545 static ssize_t lbs_wrbbp_write(struct file *file,
546 const char __user *userbuf,
547 size_t count, loff_t *ppos)
550 struct lbs_private *priv = file->private_data;
555 buf = memdup_user_nul(userbuf, min(count, len - 1));
559 res = sscanf(buf, "%x %x", &offset, &value);
565 res = lbs_set_reg(priv, CMD_BBP_REG_ACCESS, offset, value);
575 static ssize_t lbs_rdrf_read(struct file *file, char __user *userbuf,
576 size_t count, loff_t *ppos)
578 struct lbs_private *priv = file->private_data;
581 unsigned long addr = get_zeroed_page(GFP_KERNEL);
582 char *buf = (char *)addr;
588 ret = lbs_get_reg(priv, CMD_RF_REG_ACCESS, priv->rf_offset, &val);
591 pos = snprintf(buf, len, "RF[0x%x] = 0x%08x\n",
592 priv->rf_offset, val);
593 ret = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
600 static ssize_t lbs_rdrf_write(struct file *file,
601 const char __user *userbuf,
602 size_t count, loff_t *ppos)
604 struct lbs_private *priv = file->private_data;
607 buf = memdup_user_nul(userbuf, min(count, len - 1));
611 priv->rf_offset = simple_strtoul(buf, NULL, 16);
616 static ssize_t lbs_wrrf_write(struct file *file,
617 const char __user *userbuf,
618 size_t count, loff_t *ppos)
621 struct lbs_private *priv = file->private_data;
626 buf = memdup_user_nul(userbuf, min(count, len - 1));
630 res = sscanf(buf, "%x %x", &offset, &value);
636 res = lbs_set_reg(priv, CMD_RF_REG_ACCESS, offset, value);
646 #define FOPS(fread, fwrite) { \
647 .owner = THIS_MODULE, \
648 .open = simple_open, \
651 .llseek = generic_file_llseek, \
654 struct lbs_debugfs_files {
657 struct file_operations fops;
660 static const struct lbs_debugfs_files debugfs_files[] = {
661 { "info", 0444, FOPS(lbs_dev_info, write_file_dummy), },
662 { "sleepparams", 0644, FOPS(lbs_sleepparams_read,
663 lbs_sleepparams_write), },
664 { "hostsleep", 0644, FOPS(lbs_host_sleep_read,
665 lbs_host_sleep_write), },
668 static const struct lbs_debugfs_files debugfs_events_files[] = {
669 {"low_rssi", 0644, FOPS(lbs_lowrssi_read,
670 lbs_lowrssi_write), },
671 {"low_snr", 0644, FOPS(lbs_lowsnr_read,
672 lbs_lowsnr_write), },
673 {"failure_count", 0644, FOPS(lbs_failcount_read,
674 lbs_failcount_write), },
675 {"beacon_missed", 0644, FOPS(lbs_bcnmiss_read,
676 lbs_bcnmiss_write), },
677 {"high_rssi", 0644, FOPS(lbs_highrssi_read,
678 lbs_highrssi_write), },
679 {"high_snr", 0644, FOPS(lbs_highsnr_read,
680 lbs_highsnr_write), },
683 static const struct lbs_debugfs_files debugfs_regs_files[] = {
684 {"rdmac", 0644, FOPS(lbs_rdmac_read, lbs_rdmac_write), },
685 {"wrmac", 0600, FOPS(NULL, lbs_wrmac_write), },
686 {"rdbbp", 0644, FOPS(lbs_rdbbp_read, lbs_rdbbp_write), },
687 {"wrbbp", 0600, FOPS(NULL, lbs_wrbbp_write), },
688 {"rdrf", 0644, FOPS(lbs_rdrf_read, lbs_rdrf_write), },
689 {"wrrf", 0600, FOPS(NULL, lbs_wrrf_write), },
692 void lbs_debugfs_init(void)
695 lbs_dir = debugfs_create_dir("lbs_wireless", NULL);
698 void lbs_debugfs_remove(void)
700 debugfs_remove(lbs_dir);
703 void lbs_debugfs_init_one(struct lbs_private *priv, struct net_device *dev)
706 const struct lbs_debugfs_files *files;
710 priv->debugfs_dir = debugfs_create_dir(dev->name, lbs_dir);
712 for (i=0; i<ARRAY_SIZE(debugfs_files); i++) {
713 files = &debugfs_files[i];
714 priv->debugfs_files[i] = debugfs_create_file(files->name,
721 priv->events_dir = debugfs_create_dir("subscribed_events", priv->debugfs_dir);
723 for (i=0; i<ARRAY_SIZE(debugfs_events_files); i++) {
724 files = &debugfs_events_files[i];
725 priv->debugfs_events_files[i] = debugfs_create_file(files->name,
732 priv->regs_dir = debugfs_create_dir("registers", priv->debugfs_dir);
734 for (i=0; i<ARRAY_SIZE(debugfs_regs_files); i++) {
735 files = &debugfs_regs_files[i];
736 priv->debugfs_regs_files[i] = debugfs_create_file(files->name,
744 lbs_debug_init(priv);
750 void lbs_debugfs_remove_one(struct lbs_private *priv)
754 for(i=0; i<ARRAY_SIZE(debugfs_regs_files); i++)
755 debugfs_remove(priv->debugfs_regs_files[i]);
757 debugfs_remove(priv->regs_dir);
759 for(i=0; i<ARRAY_SIZE(debugfs_events_files); i++)
760 debugfs_remove(priv->debugfs_events_files[i]);
762 debugfs_remove(priv->events_dir);
764 debugfs_remove(priv->debugfs_debug);
766 for(i=0; i<ARRAY_SIZE(debugfs_files); i++)
767 debugfs_remove(priv->debugfs_files[i]);
768 debugfs_remove(priv->debugfs_dir);
777 #define item_size(n) (sizeof_field(struct lbs_private, n))
778 #define item_addr(n) (offsetof(struct lbs_private, n))
787 /* To debug any member of struct lbs_private, simply add one line here.
789 static struct debug_data items[] = {
790 {"psmode", item_size(psmode), item_addr(psmode)},
791 {"psstate", item_size(psstate), item_addr(psstate)},
794 static int num_of_items = ARRAY_SIZE(items);
797 * lbs_debugfs_read - proc read function
799 * @file: file to read
800 * @userbuf: pointer to buffer
801 * @count: number of bytes to read
802 * @ppos: read data starting position
804 * returns: amount of data read or negative error code
806 static ssize_t lbs_debugfs_read(struct file *file, char __user *userbuf,
807 size_t count, loff_t *ppos)
814 struct debug_data *d;
815 unsigned long addr = get_zeroed_page(GFP_KERNEL);
816 char *buf = (char *)addr;
822 d = file->private_data;
824 for (i = 0; i < num_of_items; i++) {
826 val = *((u8 *) d[i].addr);
827 else if (d[i].size == 2)
828 val = *((u16 *) d[i].addr);
829 else if (d[i].size == 4)
830 val = *((u32 *) d[i].addr);
831 else if (d[i].size == 8)
832 val = *((u64 *) d[i].addr);
834 pos += sprintf(p + pos, "%s=%d\n", d[i].name, val);
837 res = simple_read_from_buffer(userbuf, count, ppos, p, pos);
844 * lbs_debugfs_write - proc write function
847 * @buf: pointer to data buffer
848 * @cnt: data number to write
849 * @ppos: file position
851 * returns: amount of data written
853 static ssize_t lbs_debugfs_write(struct file *f, const char __user *buf,
854 size_t cnt, loff_t *ppos)
862 struct debug_data *d = f->private_data;
867 pdata = memdup_user_nul(buf, cnt);
869 return PTR_ERR(pdata);
872 for (i = 0; i < num_of_items; i++) {
874 p = strstr(p0, d[i].name);
877 p1 = strchr(p, '\n');
885 r = simple_strtoul(p2, NULL, 0);
887 *((u8 *) d[i].addr) = (u8) r;
888 else if (d[i].size == 2)
889 *((u16 *) d[i].addr) = (u16) r;
890 else if (d[i].size == 4)
891 *((u32 *) d[i].addr) = (u32) r;
892 else if (d[i].size == 8)
893 *((u64 *) d[i].addr) = (u64) r;
902 static const struct file_operations lbs_debug_fops = {
903 .owner = THIS_MODULE,
905 .write = lbs_debugfs_write,
906 .read = lbs_debugfs_read,
907 .llseek = default_llseek,
911 * lbs_debug_init - create debug proc file
913 * @priv: pointer to &struct lbs_private
917 static void lbs_debug_init(struct lbs_private *priv)
921 if (!priv->debugfs_dir)
924 for (i = 0; i < num_of_items; i++)
925 items[i].addr += (size_t) priv;
927 priv->debugfs_debug = debugfs_create_file("debug", 0644,
928 priv->debugfs_dir, &items[0],