leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

brcmfmac: add debugfs helper functions

Browse Source 
This patch adds debugfs support to brcmfmac. It provide helper functions
to setup the debugfs folder structure for the driver, which has following
hierarchy:

<debugfs_mount>/brcmfmac/<dev_name>/

ie.: /sys/kernel/debug/brcmfmac/mmc0:0001:2/

The new source file provides functions to create and remove the two
folders and a function to retrieve the device-specific folder so files
can be created in it.

Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Franky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Arend van Spriel 2012-06-09 22:51:43 +02:00 committed by John W. Linville
parent 5e16e8ee3a
commit d319a7cfd9
5 changed files with 98 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/brcm80211/brcmfmac/Makefile
View File

@ -34,3 +34,5 @@ brcmfmac-$(CONFIG_BRCMFMAC_SDIO) += \
sdio_chip.o
brcmfmac-$(CONFIG_BRCMFMAC_USB) += \
usb.o
brcmfmac-$(CONFIG_BRCMDBG) += \
dhd_dbg.o

3
drivers/net/wireless/brcm80211/brcmfmac/dhd.h
View File

@ -613,6 +613,9 @@ struct brcmf_pub {
struct work_struct multicast_work;
u8 macvalue[ETH_ALEN];
atomic_t pend_8021x_cnt;
#ifdef DEBUG
struct dentry *dbgfs_dir;
#endif
};
struct brcmf_if_event {

63
drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.c Normal file
View File

@ -0,0 +1,63 @@
/*
* Copyright (c) 2012 Broadcom Corporation
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <linux/debugfs.h>
#include <linux/if_ether.h>
#include <linux/if.h>
#include <linux/ieee80211.h>
#include <defs.h>
#include <brcmu_wifi.h>
#include <brcmu_utils.h>
#include "dhd.h"
#include "dhd_bus.h"
static struct dentry *root_folder;
void brcmf_debugfs_init(void)
{
root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL);
if (IS_ERR(root_folder))
root_folder = NULL;
}
void brcmf_debugfs_exit(void)
{
if (!root_folder)
return;
debugfs_remove_recursive(root_folder);
root_folder = NULL;
}
int brcmf_debugfs_attach(struct brcmf_pub *drvr)
{
if (!root_folder)
return -ENODEV;
drvr->dbgfs_dir = debugfs_create_dir(dev_name(drvr->dev), root_folder);
return PTR_RET(drvr->dbgfs_dir);
}
void brcmf_debugfs_detach(struct brcmf_pub *drvr)
{
if (!IS_ERR_OR_NULL(drvr->dbgfs_dir))
debugfs_remove_recursive(drvr->dbgfs_dir);
}
struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr)
{
return drvr->dbgfs_dir;
}

23
drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.h
View File

@ -76,4 +76,27 @@ do { \
extern int brcmf_msg_level;
struct brcmf_pub;
#ifdef DEBUG
void brcmf_debugfs_init(void);
void brcmf_debugfs_exit(void);
int brcmf_debugfs_attach(struct brcmf_pub *drvr);
void brcmf_debugfs_detach(struct brcmf_pub *drvr);
struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr);
#else
static inline void brcmf_debugfs_init(void)
{
}
static inline void brcmf_debugfs_exit(void)
{
}
static inline int brcmf_debugfs_attach(struct brcmf_pub *drvr)
{
return 0;
}
static inline void brcmf_debugfs_detach(struct brcmf_pub *drvr)
{
}
#endif
#endif /* _BRCMF_DBG_H_ */

7
drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c
View File

@ -1007,6 +1007,9 @@ int brcmf_attach(uint bus_hdrlen, struct device *dev)
drvr->bus_if->drvr = drvr;
drvr->dev = dev;
/* create device debugfs folder */
brcmf_debugfs_attach(drvr);
/* Attach and link in the protocol */
ret = brcmf_proto_attach(drvr);
if (ret != 0) {
@ -1123,6 +1126,7 @@ void brcmf_detach(struct device *dev)
brcmf_proto_detach(drvr);
}
brcmf_debugfs_detach(drvr);
bus_if->drvr = NULL;
kfree(drvr);
}
@ -1192,6 +1196,8 @@ exit:
static void brcmf_driver_init(struct work_struct *work)
{
brcmf_debugfs_init();
#ifdef CONFIG_BRCMFMAC_SDIO
brcmf_sdio_init();
#endif
@ -1219,6 +1225,7 @@ static void __exit brcmfmac_module_exit(void)
#ifdef CONFIG_BRCMFMAC_USB
brcmf_usb_exit();
#endif
brcmf_debugfs_exit();
}
module_init(brcmfmac_module_init);