Commit d319a7cf authored by Arend van Spriel's avatar Arend van Spriel Committed by John W. Linville
Browse files

brcmfmac: add debugfs helper functions 



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: default avatarPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: default avatarFranky (Zhenhui) Lin <frankyl@broadcom.com>
Signed-off-by: default avatarArend van Spriel <arend@broadcom.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 5e16e8ee

drivers/net/wireless/brcm80211/brcmfmac/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -34,3 +34,5 @@ brcmfmac-$(CONFIG_BRCMFMAC_SDIO) += \ 
		sdio_chip.o

brcmfmac-$(CONFIG_BRCMFMAC_USB) += \

		usb.o

brcmfmac-$(CONFIG_BRCMDBG) += \

		dhd_dbg.o
 
 No newline at end of file

drivers/net/wireless/brcm80211/brcmfmac/dhd.h

+3 −0
Original line number Diff line number Diff line
@@ -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 {

drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.c

0 → 100644
+63 −0
Original line number Diff line number Diff line 
/*

 * 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;

}

drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.h

+23 −0
Original line number Diff line number Diff line
@@ -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_ */

drivers/net/wireless/brcm80211/brcmfmac/dhd_linux.c

+7 −0
Original line number Diff line number Diff line
@@ -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);

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