dhd_dbg.c revision 81f5dcb8083077ca9bca10ca8e34bc8daf768dce 
1/*
2 * Copyright (c) 2012 Broadcom Corporation
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 ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16#include <linux/debugfs.h>
17#include <linux/if_ether.h>
18#include <linux/if.h>
19#include <linux/ieee80211.h>
20#include <linux/module.h>
21#include <linux/netdevice.h>
22
23#include <defs.h>
24#include <brcmu_wifi.h>
25#include <brcmu_utils.h>
26#include "dhd.h"
27#include "dhd_bus.h"
28#include "dhd_dbg.h"
29
30static struct dentry *root_folder;
31
32void brcmf_debugfs_init(void)
33{
34	root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL);
35	if (IS_ERR(root_folder))
36		root_folder = NULL;
37}
38
39void brcmf_debugfs_exit(void)
40{
41	if (!root_folder)
42		return;
43
44	debugfs_remove_recursive(root_folder);
45	root_folder = NULL;
46}
47
48int brcmf_debugfs_attach(struct brcmf_pub *drvr)
49{
50	if (!root_folder)
51		return -ENODEV;
52
53	drvr->dbgfs_dir = debugfs_create_dir(dev_name(drvr->dev), root_folder);
54	return PTR_RET(drvr->dbgfs_dir);
55}
56
57void brcmf_debugfs_detach(struct brcmf_pub *drvr)
58{
59	if (!IS_ERR_OR_NULL(drvr->dbgfs_dir))
60		debugfs_remove_recursive(drvr->dbgfs_dir);
61}
62
63struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr)
64{
65	return drvr->dbgfs_dir;
66}
67
68static
69ssize_t brcmf_debugfs_sdio_counter_read(struct file *f, char __user *data,
70					size_t count, loff_t *ppos)
71{
72	struct brcmf_sdio_count *sdcnt = f->private_data;
73	char buf[750];
74	int res;
75
76	/* only allow read from start */
77	if (*ppos > 0)
78		return 0;
79
80	res = scnprintf(buf, sizeof(buf),
81			"intrcount:    %u\nlastintrs:    %u\n"
82			"pollcnt:      %u\nregfails:     %u\n"
83			"tx_sderrs:    %u\nfcqueued:     %u\n"
84			"rxrtx:        %u\nrx_toolong:   %u\n"
85			"rxc_errors:   %u\nrx_hdrfail:   %u\n"
86			"rx_badhdr:    %u\nrx_badseq:    %u\n"
87			"fc_rcvd:      %u\nfc_xoff:      %u\n"
88			"fc_xon:       %u\nrxglomfail:   %u\n"
89			"rxglomframes: %u\nrxglompkts:   %u\n"
90			"f2rxhdrs:     %u\nf2rxdata:     %u\n"
91			"f2txdata:     %u\nf1regdata:    %u\n"
92			"tickcnt:      %u\ntx_ctlerrs:   %lu\n"
93			"tx_ctlpkts:   %lu\nrx_ctlerrs:   %lu\n"
94			"rx_ctlpkts:   %lu\nrx_readahead: %lu\n",
95			sdcnt->intrcount, sdcnt->lastintrs,
96			sdcnt->pollcnt, sdcnt->regfails,
97			sdcnt->tx_sderrs, sdcnt->fcqueued,
98			sdcnt->rxrtx, sdcnt->rx_toolong,
99			sdcnt->rxc_errors, sdcnt->rx_hdrfail,
100			sdcnt->rx_badhdr, sdcnt->rx_badseq,
101			sdcnt->fc_rcvd, sdcnt->fc_xoff,
102			sdcnt->fc_xon, sdcnt->rxglomfail,
103			sdcnt->rxglomframes, sdcnt->rxglompkts,
104			sdcnt->f2rxhdrs, sdcnt->f2rxdata,
105			sdcnt->f2txdata, sdcnt->f1regdata,
106			sdcnt->tickcnt, sdcnt->tx_ctlerrs,
107			sdcnt->tx_ctlpkts, sdcnt->rx_ctlerrs,
108			sdcnt->rx_ctlpkts, sdcnt->rx_readahead_cnt);
109
110	return simple_read_from_buffer(data, count, ppos, buf, res);
111}
112
113static const struct file_operations brcmf_debugfs_sdio_counter_ops = {
114	.owner = THIS_MODULE,
115	.open = simple_open,
116	.read = brcmf_debugfs_sdio_counter_read
117};
118
119void brcmf_debugfs_create_sdio_count(struct brcmf_pub *drvr,
120				     struct brcmf_sdio_count *sdcnt)
121{
122	struct dentry *dentry = drvr->dbgfs_dir;
123
124	if (!IS_ERR_OR_NULL(dentry))
125		debugfs_create_file("counters", S_IRUGO, dentry,
126				    sdcnt, &brcmf_debugfs_sdio_counter_ops);
127}
128