[linux.git] / drivers / net / wireless / bcm43xx / bcm43xx_debugfs.c

/*

  Broadcom BCM43xx wireless driver

  debugfs driver debugging code

  Copyright (c) 2005 Michael Buesch <[email protected]>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program; see the file COPYING.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  Boston, MA 02110-1301, USA.

*/


#include <linux/fs.h>
#include <linux/debugfs.h>
#include <linux/slab.h>
#include <linux/netdevice.h>
#include <linux/pci.h>
#include <asm/io.h>

#include "bcm43xx.h"
#include "bcm43xx_main.h"
#include "bcm43xx_debugfs.h"
#include "bcm43xx_dma.h"
#include "bcm43xx_pio.h"
#include "bcm43xx_xmit.h"

#define REALLY_BIG_BUFFER_SIZE	(1024*256)

static struct bcm43xx_debugfs fs;
static char really_big_buffer[REALLY_BIG_BUFFER_SIZE];
static DECLARE_MUTEX(big_buffer_sem);


static ssize_t write_file_dummy(struct file *file, const char __user *buf,
				size_t count, loff_t *ppos)
{
	return count;
}

static int open_file_generic(struct inode *inode, struct file *file)
{
	file->private_data = inode->u.generic_ip;
	return 0;
}

#define fappend(fmt, x...)	pos += snprintf(buf + pos, len - pos, fmt , ##x)

static ssize_t devinfo_read_file(struct file *file, char __user *userbuf,
				 size_t count, loff_t *ppos)
{
	const size_t len = REALLY_BIG_BUFFER_SIZE;

	struct bcm43xx_private *bcm = file->private_data;
	char *buf = really_big_buffer;
	size_t pos = 0;
	ssize_t res;
	struct net_device *net_dev;
	struct pci_dev *pci_dev;
	unsigned long flags;
	u16 tmp16;
	int i;

	down(&big_buffer_sem);

	bcm43xx_lock_irqsafe(bcm, flags);
	if (bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED) {
		fappend("Board not initialized.\n");
		goto out;
	}
	net_dev = bcm->net_dev;
	pci_dev = bcm->pci_dev;

	/* This is where the information is written to the "devinfo" file */
	fappend("*** %s devinfo ***\n", net_dev->name);
	fappend("vendor:           0x%04x   device:           0x%04x\n",
		pci_dev->vendor, pci_dev->device);
	fappend("subsystem_vendor: 0x%04x   subsystem_device: 0x%04x\n",
		pci_dev->subsystem_vendor, pci_dev->subsystem_device);
	fappend("IRQ: %d\n", bcm->irq);
	fappend("mmio_addr: 0x%p\n", bcm->mmio_addr);
	fappend("chip_id: 0x%04x   chip_rev: 0x%02x\n", bcm->chip_id, bcm->chip_rev);
	if ((bcm->core_80211[0].rev >= 3) && (bcm43xx_read32(bcm, 0x0158) & (1 << 16)))
		fappend("Radio disabled by hardware!\n");
	if ((bcm->core_80211[0].rev < 3) && !(bcm43xx_read16(bcm, 0x049A) & (1 << 4)))
		fappend("Radio disabled by hardware!\n");
	fappend("board_vendor: 0x%04x   board_type: 0x%04x\n", bcm->board_vendor,
	        bcm->board_type);

	fappend("\nCores:\n");
#define fappend_core(name, info) fappend("core \"" name "\" %s, %s, id: 0x%04x, "	\
					 "rev: 0x%02x, index: 0x%02x\n",		\
					 (info).available				\
						? "available" : "nonavailable",		\
					 (info).enabled					\
						? "enabled" : "disabled",		\
					 (info).id, (info).rev, (info).index)
	fappend_core("CHIPCOMMON", bcm->core_chipcommon);
	fappend_core("PCI", bcm->core_pci);
	fappend_core("first 80211", bcm->core_80211[0]);
	fappend_core("second 80211", bcm->core_80211[1]);
#undef fappend_core
	tmp16 = bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_CONTROL);
	fappend("LEDs: ");
	for (i = 0; i < BCM43xx_NR_LEDS; i++)
		fappend("%d ", !!(tmp16 & (1 << i)));
	fappend("\n");

out:
	bcm43xx_unlock_irqsafe(bcm, flags);
	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
	up(&big_buffer_sem);
	return res;
}

static ssize_t drvinfo_read_file(struct file *file, char __user *userbuf,
				 size_t count, loff_t *ppos)
{
	const size_t len = REALLY_BIG_BUFFER_SIZE;

	char *buf = really_big_buffer;
	size_t pos = 0;
	ssize_t res;

	down(&big_buffer_sem);

	/* This is where the information is written to the "driver" file */
	fappend(KBUILD_MODNAME " driver\n");
	fappend("Compiled at: %s %s\n", __DATE__, __TIME__);

	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
	up(&big_buffer_sem);
	return res;
}

static ssize_t spromdump_read_file(struct file *file, char __user *userbuf,
				 size_t count, loff_t *ppos)
{
	const size_t len = REALLY_BIG_BUFFER_SIZE;

	struct bcm43xx_private *bcm = file->private_data;
	char *buf = really_big_buffer;
	size_t pos = 0;
	ssize_t res;
	unsigned long flags;

	down(&big_buffer_sem);
	bcm43xx_lock_irqsafe(bcm, flags);
	if (bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED) {
		fappend("Board not initialized.\n");
		goto out;
	}

	/* This is where the information is written to the "sprom_dump" file */
	fappend("boardflags: 0x%04x\n", bcm->sprom.boardflags);

out:
	bcm43xx_unlock_irqsafe(bcm, flags);
	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
	up(&big_buffer_sem);
	return res;
}

static ssize_t tsf_read_file(struct file *file, char __user *userbuf,
			     size_t count, loff_t *ppos)
{
	const size_t len = REALLY_BIG_BUFFER_SIZE;

	struct bcm43xx_private *bcm = file->private_data;
	char *buf = really_big_buffer;
	size_t pos = 0;
	ssize_t res;
	unsigned long flags;
	u64 tsf;

	down(&big_buffer_sem);
	bcm43xx_lock_irqsafe(bcm, flags);
	if (bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED) {
		fappend("Board not initialized.\n");
		goto out;
	}
	bcm43xx_tsf_read(bcm, &tsf);
	fappend("0x%08x%08x\n",
		(unsigned int)((tsf & 0xFFFFFFFF00000000ULL) >> 32),
		(unsigned int)(tsf & 0xFFFFFFFFULL));

out:
	bcm43xx_unlock_irqsafe(bcm, flags);
	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
	up(&big_buffer_sem);
	return res;
}

static ssize_t tsf_write_file(struct file *file, const char __user *user_buf,
			      size_t count, loff_t *ppos)
{
	struct bcm43xx_private *bcm = file->private_data;
	char *buf = really_big_buffer;
	ssize_t buf_size;
	ssize_t res;
	unsigned long flags;
	u64 tsf;

	buf_size = min(count, sizeof (really_big_buffer) - 1);
	down(&big_buffer_sem);
	if (copy_from_user(buf, user_buf, buf_size)) {
	        res = -EFAULT;
		goto out_up;
	}
	bcm43xx_lock_irqsafe(bcm, flags);
	if (bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED) {
		printk(KERN_INFO PFX "debugfs: Board not initialized.\n");
		res = -EFAULT;
		goto out_unlock;
	}
	if (sscanf(buf, "%lli", &tsf) != 1) {
		printk(KERN_INFO PFX "debugfs: invalid values for \"tsf\"\n");
		res = -EINVAL;
		goto out_unlock;
	}
	bcm43xx_tsf_write(bcm, tsf);
	mmiowb();
	res = buf_size;
	
out_unlock:
	bcm43xx_unlock_irqsafe(bcm, flags);
out_up:
	up(&big_buffer_sem);
	return res;
}

static ssize_t txstat_read_file(struct file *file, char __user *userbuf,
				size_t count, loff_t *ppos)
{
	const size_t len = REALLY_BIG_BUFFER_SIZE;

	struct bcm43xx_private *bcm = file->private_data;
	char *buf = really_big_buffer;
	size_t pos = 0;
	ssize_t res;
	unsigned long flags;
	struct bcm43xx_dfsentry *e;
	struct bcm43xx_xmitstatus *status;
	int i, cnt, j = 0;

	down(&big_buffer_sem);
	bcm43xx_lock_irqsafe(bcm, flags);

	fappend("Last %d logged xmitstatus blobs (Latest first):\n\n",
		BCM43xx_NR_LOGGED_XMITSTATUS);
	e = bcm->dfsentry;
	if (e->xmitstatus_printing == 0) {
		/* At the beginning, make a copy of all data to avoid
		 * concurrency, as this function is called multiple
		 * times for big logs. Without copying, the data might
		 * change between reads. This would result in total trash.
		 */
		e->xmitstatus_printing = 1;
		e->saved_xmitstatus_ptr = e->xmitstatus_ptr;
		e->saved_xmitstatus_cnt = e->xmitstatus_cnt;
		memcpy(e->xmitstatus_print_buffer, e->xmitstatus_buffer,
		       BCM43xx_NR_LOGGED_XMITSTATUS * sizeof(*(e->xmitstatus_buffer)));
	}
	i = e->saved_xmitstatus_ptr - 1;
	if (i < 0)
		i = BCM43xx_NR_LOGGED_XMITSTATUS - 1;
	cnt = e->saved_xmitstatus_cnt;
	while (cnt) {
		status = e->xmitstatus_print_buffer + i;
		fappend("0x%02x:   cookie: 0x%04x,  flags: 0x%02x,  "
			"cnt1: 0x%02x,  cnt2: 0x%02x,  seq: 0x%04x,  "
			"unk: 0x%04x\n", j,
			status->cookie, status->flags,
			status->cnt1, status->cnt2, status->seq,
			status->unknown);
		j++;
		cnt--;
		i--;
		if (i < 0)
			i = BCM43xx_NR_LOGGED_XMITSTATUS - 1;
	}

	bcm43xx_unlock_irqsafe(bcm, flags);
	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
	bcm43xx_lock_irqsafe(bcm, flags);
	if (*ppos == pos) {
		/* Done. Drop the copied data. */
		e->xmitstatus_printing = 0;
	}
	bcm43xx_unlock_irqsafe(bcm, flags);
	up(&big_buffer_sem);
	return res;
}

#undef fappend


static struct file_operations devinfo_fops = {
	.read = devinfo_read_file,
	.write = write_file_dummy,
	.open = open_file_generic,
};

static struct file_operations spromdump_fops = {
	.read = spromdump_read_file,
	.write = write_file_dummy,
	.open = open_file_generic,
};

static struct file_operations drvinfo_fops = {
	.read = drvinfo_read_file,
	.write = write_file_dummy,
	.open = open_file_generic,
};

static struct file_operations tsf_fops = {
	.read = tsf_read_file,
	.write = tsf_write_file,
	.open = open_file_generic,
};

static struct file_operations txstat_fops = {
	.read = txstat_read_file,
	.write = write_file_dummy,
	.open = open_file_generic,
};


void bcm43xx_debugfs_add_device(struct bcm43xx_private *bcm)
{
	struct bcm43xx_dfsentry *e;
	char devdir[IFNAMSIZ];

	assert(bcm);
	e = kzalloc(sizeof(*e), GFP_KERNEL);
	if (!e) {
		printk(KERN_ERR PFX "out of memory\n");
		return;
	}
	e->bcm = bcm;
	e->xmitstatus_buffer = kzalloc(BCM43xx_NR_LOGGED_XMITSTATUS
				       * sizeof(*(e->xmitstatus_buffer)),
				       GFP_KERNEL);
	if (!e->xmitstatus_buffer) {
		printk(KERN_ERR PFX "out of memory\n");
		kfree(e);
		return;
	}
	e->xmitstatus_print_buffer = kzalloc(BCM43xx_NR_LOGGED_XMITSTATUS
					     * sizeof(*(e->xmitstatus_buffer)),
					     GFP_KERNEL);
	if (!e->xmitstatus_print_buffer) {
		printk(KERN_ERR PFX "out of memory\n");
		kfree(e);
		return;
	}


	bcm->dfsentry = e;

	strncpy(devdir, bcm->net_dev->name, ARRAY_SIZE(devdir));
	e->subdir = debugfs_create_dir(devdir, fs.root);
	e->dentry_devinfo = debugfs_create_file("devinfo", 0444, e->subdir,
						bcm, &devinfo_fops);
	if (!e->dentry_devinfo)
		printk(KERN_ERR PFX "debugfs: creating \"devinfo\" for \"%s\" failed!\n", devdir);
	e->dentry_spromdump = debugfs_create_file("sprom_dump", 0444, e->subdir,
						  bcm, &spromdump_fops);
	if (!e->dentry_spromdump)
		printk(KERN_ERR PFX "debugfs: creating \"sprom_dump\" for \"%s\" failed!\n", devdir);
	e->dentry_tsf = debugfs_create_file("tsf", 0666, e->subdir,
	                                    bcm, &tsf_fops);
	if (!e->dentry_tsf)
		printk(KERN_ERR PFX "debugfs: creating \"tsf\" for \"%s\" failed!\n", devdir);
	e->dentry_txstat = debugfs_create_file("tx_status", 0444, e->subdir,
						bcm, &txstat_fops);
	if (!e->dentry_txstat)
		printk(KERN_ERR PFX "debugfs: creating \"tx_status\" for \"%s\" failed!\n", devdir);
}

void bcm43xx_debugfs_remove_device(struct bcm43xx_private *bcm)
{
	struct bcm43xx_dfsentry *e;

	if (!bcm)
		return;

	e = bcm->dfsentry;
	assert(e);
	debugfs_remove(e->dentry_spromdump);
	debugfs_remove(e->dentry_devinfo);
	debugfs_remove(e->dentry_tsf);
	debugfs_remove(e->dentry_txstat);
	debugfs_remove(e->subdir);
	kfree(e->xmitstatus_buffer);
	kfree(e->xmitstatus_print_buffer);
	kfree(e);
}

void bcm43xx_debugfs_log_txstat(struct bcm43xx_private *bcm,
				struct bcm43xx_xmitstatus *status)
{
	struct bcm43xx_dfsentry *e;
	struct bcm43xx_xmitstatus *savedstatus;

	/* This is protected by bcm->_lock */
	e = bcm->dfsentry;
	assert(e);
	savedstatus = e->xmitstatus_buffer + e->xmitstatus_ptr;
	memcpy(savedstatus, status, sizeof(*status));
	e->xmitstatus_ptr++;
	if (e->xmitstatus_ptr >= BCM43xx_NR_LOGGED_XMITSTATUS)
		e->xmitstatus_ptr = 0;
	if (e->xmitstatus_cnt < BCM43xx_NR_LOGGED_XMITSTATUS)
		e->xmitstatus_cnt++;
}

void bcm43xx_debugfs_init(void)
{
	memset(&fs, 0, sizeof(fs));
	fs.root = debugfs_create_dir(KBUILD_MODNAME, NULL);
	if (!fs.root)
		printk(KERN_ERR PFX "debugfs: creating \"" KBUILD_MODNAME "\" subdir failed!\n");
	fs.dentry_driverinfo = debugfs_create_file("driver", 0444, fs.root, NULL, &drvinfo_fops);
	if (!fs.dentry_driverinfo)
		printk(KERN_ERR PFX "debugfs: creating \"" KBUILD_MODNAME "/driver\" failed!\n");
}

void bcm43xx_debugfs_exit(void)
{
	debugfs_remove(fs.dentry_driverinfo);
	debugfs_remove(fs.root);
}

void bcm43xx_printk_dump(const char *data,
			 size_t size,
			 const char *description)
{
	size_t i;
	char c;

	printk(KERN_INFO PFX "Data dump (%s, %zd bytes):",
	       description, size);
	for (i = 0; i < size; i++) {
		c = data[i];
		if (i % 8 == 0)
			printk("\n" KERN_INFO PFX "0x%08zx:  0x%02x, ", i, c & 0xff);
		else
			printk("0x%02x, ", c & 0xff);
	}
	printk("\n");
}

void bcm43xx_printk_bitdump(const unsigned char *data,
			    size_t bytes, int msb_to_lsb,
			    const char *description)
{
	size_t i;
	int j;
	const unsigned char *d;

	printk(KERN_INFO PFX "*** Bitdump (%s, %zd bytes, %s) ***",
	       description, bytes, msb_to_lsb ? "MSB to LSB" : "LSB to MSB");
	for (i = 0; i < bytes; i++) {
		d = data + i;
		if (i % 8 == 0)
			printk("\n" KERN_INFO PFX "0x%08zx:  ", i);
		if (msb_to_lsb) {
			for (j = 7; j >= 0; j--) {
				if (*d & (1 << j))
					printk("1");
				else
					printk("0");
			}
		} else {
			for (j = 0; j < 8; j++) {
				if (*d & (1 << j))
					printk("1");
				else
					printk("0");
			}
		}
		printk(" ");
	}
	printk("\n");
}
Commit	Line	Data
f222313a JL	1	/*
	2
	3	Broadcom BCM43xx wireless driver
	4
	5	debugfs driver debugging code
	6
	7	Copyright (c) 2005 Michael Buesch <[email protected]>
	8
	9	This program is free software; you can redistribute it and/or modify
	10	it under the terms of the GNU General Public License as published by
	11	the Free Software Foundation; either version 2 of the License, or
	12	(at your option) any later version.
	13
	14	This program is distributed in the hope that it will be useful,
	15	but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	GNU General Public License for more details.
	18
	19	You should have received a copy of the GNU General Public License
	20	along with this program; see the file COPYING. If not, write to
	21	the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
	22	Boston, MA 02110-1301, USA.
	23
	24	*/
	25
	26
	27
	28	#include <linux/fs.h>
	29	#include <linux/debugfs.h>
	30	#include <linux/slab.h>
	31	#include <linux/netdevice.h>
	32	#include <linux/pci.h>
	33	#include <asm/io.h>
	34
	35	#include "bcm43xx.h"
	36	#include "bcm43xx_main.h"
	37	#include "bcm43xx_debugfs.h"
	38	#include "bcm43xx_dma.h"
	39	#include "bcm43xx_pio.h"
f398f02d	40	#include "bcm43xx_xmit.h"
f222313a JL	41
	42	#define REALLY_BIG_BUFFER_SIZE (1024*256)
	43
	44	static struct bcm43xx_debugfs fs;
	45	static char really_big_buffer[REALLY_BIG_BUFFER_SIZE];
	46	static DECLARE_MUTEX(big_buffer_sem);
	47
	48
	49	static ssize_t write_file_dummy(struct file file, const char __user buf,
	50	size_t count, loff_t *ppos)
	51	{
	52	return count;
	53	}
	54
	55	static int open_file_generic(struct inode inode, struct file file)
	56	{
	57	file->private_data = inode->u.generic_ip;
	58	return 0;
	59	}
	60
	61	#define fappend(fmt, x...) pos += snprintf(buf + pos, len - pos, fmt , ##x)
	62
	63	static ssize_t devinfo_read_file(struct file file, char __user userbuf,
	64	size_t count, loff_t *ppos)
	65	{
	66	const size_t len = REALLY_BIG_BUFFER_SIZE;
	67
	68	struct bcm43xx_private *bcm = file->private_data;
	69	char *buf = really_big_buffer;
	70	size_t pos = 0;
	71	ssize_t res;
	72	struct net_device *net_dev;
	73	struct pci_dev *pci_dev;
	74	unsigned long flags;
	75	u16 tmp16;
	76	int i;
	77
	78	down(&big_buffer_sem);
	79
78ff56a0 MB	80	bcm43xx_lock_irqsafe(bcm, flags);
78ff56a0 MB	81	if (bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED) {
f222313a JL	82	fappend("Board not initialized.\n");
	83	goto out;
	84	}
	85	net_dev = bcm->net_dev;
	86	pci_dev = bcm->pci_dev;
	87
	88	/* This is where the information is written to the "devinfo" file */
	89	fappend("* %s devinfo *\n", net_dev->name);
	90	fappend("vendor: 0x%04x device: 0x%04x\n",
	91	pci_dev->vendor, pci_dev->device);
	92	fappend("subsystem_vendor: 0x%04x subsystem_device: 0x%04x\n",
	93	pci_dev->subsystem_vendor, pci_dev->subsystem_device);
	94	fappend("IRQ: %d\n", bcm->irq);
cc935710	95	fappend("mmio_addr: 0x%p\n", bcm->mmio_addr);
f222313a JL	96	fappend("chip_id: 0x%04x chip_rev: 0x%02x\n", bcm->chip_id, bcm->chip_rev);
	97	if ((bcm->core_80211[0].rev >= 3) && (bcm43xx_read32(bcm, 0x0158) & (1 << 16)))
	98	fappend("Radio disabled by hardware!\n");
	99	if ((bcm->core_80211[0].rev < 3) && !(bcm43xx_read16(bcm, 0x049A) & (1 << 4)))
	100	fappend("Radio disabled by hardware!\n");
	101	fappend("board_vendor: 0x%04x board_type: 0x%04x\n", bcm->board_vendor,
	102	bcm->board_type);
	103
	104	fappend("\nCores:\n");
	105	#define fappend_core(name, info) fappend("core \"" name "\" %s, %s, id: 0x%04x, " \
	106	"rev: 0x%02x, index: 0x%02x\n", \
e9357c05	107	(info).available \
f222313a	108	? "available" : "nonavailable", \
e9357c05	109	(info).enabled \
f222313a JL	110	? "enabled" : "disabled", \
	111	(info).id, (info).rev, (info).index)
	112	fappend_core("CHIPCOMMON", bcm->core_chipcommon);
	113	fappend_core("PCI", bcm->core_pci);
f222313a JL	114	fappend_core("first 80211", bcm->core_80211[0]);
	115	fappend_core("second 80211", bcm->core_80211[1]);
	116	#undef fappend_core
	117	tmp16 = bcm43xx_read16(bcm, BCM43xx_MMIO_GPIO_CONTROL);
	118	fappend("LEDs: ");
	119	for (i = 0; i < BCM43xx_NR_LEDS; i++)
	120	fappend("%d ", !!(tmp16 & (1 << i)));
	121	fappend("\n");
	122
	123	out:
78ff56a0	124	bcm43xx_unlock_irqsafe(bcm, flags);
f222313a JL	125	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
	126	up(&big_buffer_sem);
	127	return res;
	128	}
	129
	130	static ssize_t drvinfo_read_file(struct file file, char __user userbuf,
	131	size_t count, loff_t *ppos)
	132	{
	133	const size_t len = REALLY_BIG_BUFFER_SIZE;
	134
	135	char *buf = really_big_buffer;
	136	size_t pos = 0;
	137	ssize_t res;
	138
	139	down(&big_buffer_sem);
	140
	141	/* This is where the information is written to the "driver" file */
65f3f191	142	fappend(KBUILD_MODNAME " driver\n");
f222313a JL	143	fappend("Compiled at: %s %s\n", __DATE__, __TIME__);
	144
	145	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
	146	up(&big_buffer_sem);
	147	return res;
	148	}
	149
	150	static ssize_t spromdump_read_file(struct file file, char __user userbuf,
	151	size_t count, loff_t *ppos)
	152	{
	153	const size_t len = REALLY_BIG_BUFFER_SIZE;
	154
	155	struct bcm43xx_private *bcm = file->private_data;
	156	char *buf = really_big_buffer;
	157	size_t pos = 0;
	158	ssize_t res;
	159	unsigned long flags;
	160
	161	down(&big_buffer_sem);
78ff56a0 MB	162	bcm43xx_lock_irqsafe(bcm, flags);
78ff56a0 MB	163	if (bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED) {
f222313a JL	164	fappend("Board not initialized.\n");
	165	goto out;
	166	}
	167
	168	/* This is where the information is written to the "sprom_dump" file */
	169	fappend("boardflags: 0x%04x\n", bcm->sprom.boardflags);
	170
	171	out:
78ff56a0	172	bcm43xx_unlock_irqsafe(bcm, flags);
f222313a JL	173	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
	174	up(&big_buffer_sem);
	175	return res;
	176	}
	177
	178	static ssize_t tsf_read_file(struct file file, char __user userbuf,
	179	size_t count, loff_t *ppos)
	180	{
	181	const size_t len = REALLY_BIG_BUFFER_SIZE;
	182
	183	struct bcm43xx_private *bcm = file->private_data;
	184	char *buf = really_big_buffer;
	185	size_t pos = 0;
	186	ssize_t res;
	187	unsigned long flags;
	188	u64 tsf;
	189
	190	down(&big_buffer_sem);
78ff56a0 MB	191	bcm43xx_lock_irqsafe(bcm, flags);
78ff56a0 MB	192	if (bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED) {
f222313a JL	193	fappend("Board not initialized.\n");
	194	goto out;
	195	}
	196	bcm43xx_tsf_read(bcm, &tsf);
	197	fappend("0x%08x%08x\n",
	198	(unsigned int)((tsf & 0xFFFFFFFF00000000ULL) >> 32),
	199	(unsigned int)(tsf & 0xFFFFFFFFULL));
	200
	201	out:
78ff56a0	202	bcm43xx_unlock_irqsafe(bcm, flags);
f222313a JL	203	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
	204	up(&big_buffer_sem);
	205	return res;
	206	}
	207
	208	static ssize_t tsf_write_file(struct file file, const char __user user_buf,
	209	size_t count, loff_t *ppos)
	210	{
	211	struct bcm43xx_private *bcm = file->private_data;
	212	char *buf = really_big_buffer;
	213	ssize_t buf_size;
	214	ssize_t res;
	215	unsigned long flags;
	216	u64 tsf;
	217
	218	buf_size = min(count, sizeof (really_big_buffer) - 1);
	219	down(&big_buffer_sem);
	220	if (copy_from_user(buf, user_buf, buf_size)) {
	221	res = -EFAULT;
	222	goto out_up;
	223	}
78ff56a0 MB	224	bcm43xx_lock_irqsafe(bcm, flags);
78ff56a0 MB	225	if (bcm43xx_status(bcm) != BCM43xx_STAT_INITIALIZED) {
f222313a JL	226	printk(KERN_INFO PFX "debugfs: Board not initialized.\n");
	227	res = -EFAULT;
	228	goto out_unlock;
	229	}
	230	if (sscanf(buf, "%lli", &tsf) != 1) {
	231	printk(KERN_INFO PFX "debugfs: invalid values for \"tsf\"\n");
	232	res = -EINVAL;
	233	goto out_unlock;
	234	}
	235	bcm43xx_tsf_write(bcm, tsf);
78ff56a0	236	mmiowb();
f222313a JL	237	res = buf_size;
	238
	239	out_unlock:
78ff56a0	240	bcm43xx_unlock_irqsafe(bcm, flags);
f222313a JL	241	out_up:
	242	up(&big_buffer_sem);
	243	return res;
	244	}
	245
	246	static ssize_t txstat_read_file(struct file file, char __user userbuf,
	247	size_t count, loff_t *ppos)
	248	{
	249	const size_t len = REALLY_BIG_BUFFER_SIZE;
	250
	251	struct bcm43xx_private *bcm = file->private_data;
	252	char *buf = really_big_buffer;
	253	size_t pos = 0;
	254	ssize_t res;
	255	unsigned long flags;
	256	struct bcm43xx_dfsentry *e;
	257	struct bcm43xx_xmitstatus *status;
	258	int i, cnt, j = 0;
	259
	260	down(&big_buffer_sem);
78ff56a0	261	bcm43xx_lock_irqsafe(bcm, flags);
f222313a JL	262
	263	fappend("Last %d logged xmitstatus blobs (Latest first):\n\n",
	264	BCM43xx_NR_LOGGED_XMITSTATUS);
	265	e = bcm->dfsentry;
	266	if (e->xmitstatus_printing == 0) {
	267	/* At the beginning, make a copy of all data to avoid
	268	* concurrency, as this function is called multiple
	269	* times for big logs. Without copying, the data might
	270	* change between reads. This would result in total trash.
	271	*/
	272	e->xmitstatus_printing = 1;
	273	e->saved_xmitstatus_ptr = e->xmitstatus_ptr;
	274	e->saved_xmitstatus_cnt = e->xmitstatus_cnt;
	275	memcpy(e->xmitstatus_print_buffer, e->xmitstatus_buffer,
	276	BCM43xx_NR_LOGGED_XMITSTATUS * sizeof(*(e->xmitstatus_buffer)));
	277	}
	278	i = e->saved_xmitstatus_ptr - 1;
	279	if (i < 0)
	280	i = BCM43xx_NR_LOGGED_XMITSTATUS - 1;
	281	cnt = e->saved_xmitstatus_cnt;
	282	while (cnt) {
	283	status = e->xmitstatus_print_buffer + i;
	284	fappend("0x%02x: cookie: 0x%04x, flags: 0x%02x, "
	285	"cnt1: 0x%02x, cnt2: 0x%02x, seq: 0x%04x, "
	286	"unk: 0x%04x\n", j,
	287	status->cookie, status->flags,
	288	status->cnt1, status->cnt2, status->seq,
	289	status->unknown);
	290	j++;
	291	cnt--;
	292	i--;
	293	if (i < 0)
	294	i = BCM43xx_NR_LOGGED_XMITSTATUS - 1;
	295	}
	296
78ff56a0	297	bcm43xx_unlock_irqsafe(bcm, flags);
f222313a	298	res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
78ff56a0	299	bcm43xx_lock_irqsafe(bcm, flags);
f222313a JL	300	if (*ppos == pos) {
	301	/* Done. Drop the copied data. */
	302	e->xmitstatus_printing = 0;
	303	}
78ff56a0	304	bcm43xx_unlock_irqsafe(bcm, flags);
f222313a JL	305	up(&big_buffer_sem);
	306	return res;
	307	}
	308
	309	#undef fappend
	310
	311
	312	static struct file_operations devinfo_fops = {
	313	.read = devinfo_read_file,
	314	.write = write_file_dummy,
	315	.open = open_file_generic,
	316	};
	317
	318	static struct file_operations spromdump_fops = {
	319	.read = spromdump_read_file,
	320	.write = write_file_dummy,
	321	.open = open_file_generic,
	322	};
	323
	324	static struct file_operations drvinfo_fops = {
	325	.read = drvinfo_read_file,
	326	.write = write_file_dummy,
	327	.open = open_file_generic,
	328	};
	329
	330	static struct file_operations tsf_fops = {
	331	.read = tsf_read_file,
	332	.write = tsf_write_file,
	333	.open = open_file_generic,
	334	};
	335
	336	static struct file_operations txstat_fops = {
	337	.read = txstat_read_file,
	338	.write = write_file_dummy,
	339	.open = open_file_generic,
	340	};
	341
	342
	343	void bcm43xx_debugfs_add_device(struct bcm43xx_private *bcm)
	344	{
	345	struct bcm43xx_dfsentry *e;
	346	char devdir[IFNAMSIZ];
	347
	348	assert(bcm);
	349	e = kzalloc(sizeof(*e), GFP_KERNEL);
	350	if (!e) {
	351	printk(KERN_ERR PFX "out of memory\n");
	352	return;
	353	}
	354	e->bcm = bcm;
	355	e->xmitstatus_buffer = kzalloc(BCM43xx_NR_LOGGED_XMITSTATUS
	356	* sizeof(*(e->xmitstatus_buffer)),
	357	GFP_KERNEL);
	358	if (!e->xmitstatus_buffer) {
	359	printk(KERN_ERR PFX "out of memory\n");
	360	kfree(e);
	361	return;
	362	}
	363	e->xmitstatus_print_buffer = kzalloc(BCM43xx_NR_LOGGED_XMITSTATUS
	364	* sizeof(*(e->xmitstatus_buffer)),
	365	GFP_KERNEL);
	366	if (!e->xmitstatus_print_buffer) {
	367	printk(KERN_ERR PFX "out of memory\n");
	368	kfree(e);
369	return;
370	}
371
372
373	bcm->dfsentry = e;
374
375	strncpy(devdir, bcm->net_dev->name, ARRAY_SIZE(devdir));
376	e->subdir = debugfs_create_dir(devdir, fs.root);
377	e->dentry_devinfo = debugfs_create_file("devinfo", 0444, e->subdir,
378	bcm, &devinfo_fops);
379	if (!e->dentry_devinfo)
380	printk(KERN_ERR PFX "debugfs: creating \"devinfo\" for \"%s\" failed!\n", devdir);
381	e->dentry_spromdump = debugfs_create_file("sprom_dump", 0444, e->subdir,
382	bcm, &spromdump_fops);
383	if (!e->dentry_spromdump)
384	printk(KERN_ERR PFX "debugfs: creating \"sprom_dump\" for \"%s\" failed!\n", devdir);
385	e->dentry_tsf = debugfs_create_file("tsf", 0666, e->subdir,
386	bcm, &tsf_fops);
387	if (!e->dentry_tsf)
388	printk(KERN_ERR PFX "debugfs: creating \"tsf\" for \"%s\" failed!\n", devdir);
389	e->dentry_txstat = debugfs_create_file("tx_status", 0444, e->subdir,
390	bcm, &txstat_fops);
391	if (!e->dentry_txstat)
392	printk(KERN_ERR PFX "debugfs: creating \"tx_status\" for \"%s\" failed!\n", devdir);
393	}
394
395	void bcm43xx_debugfs_remove_device(struct bcm43xx_private *bcm)
396	{
397	struct bcm43xx_dfsentry *e;
398
399	if (!bcm)
400	return;
401
402	e = bcm->dfsentry;
403	assert(e);
404	debugfs_remove(e->dentry_spromdump);
405	debugfs_remove(e->dentry_devinfo);
406	debugfs_remove(e->dentry_tsf);
407	debugfs_remove(e->dentry_txstat);
408	debugfs_remove(e->subdir);
409	kfree(e->xmitstatus_buffer);
410	kfree(e->xmitstatus_print_buffer);
411	kfree(e);
412	}
413
414	void bcm43xx_debugfs_log_txstat(struct bcm43xx_private *bcm,
415	struct bcm43xx_xmitstatus *status)
416	{
417	struct bcm43xx_dfsentry *e;
418	struct bcm43xx_xmitstatus *savedstatus;
419
efccb647	420	/* This is protected by bcm->_lock */
f222313a JL	421	e = bcm->dfsentry;
	422	assert(e);
	423	savedstatus = e->xmitstatus_buffer + e->xmitstatus_ptr;
	424	memcpy(savedstatus, status, sizeof(*status));
	425	e->xmitstatus_ptr++;
	426	if (e->xmitstatus_ptr >= BCM43xx_NR_LOGGED_XMITSTATUS)
	427	e->xmitstatus_ptr = 0;
	428	if (e->xmitstatus_cnt < BCM43xx_NR_LOGGED_XMITSTATUS)
	429	e->xmitstatus_cnt++;
	430	}
	431
	432	void bcm43xx_debugfs_init(void)
	433	{
	434	memset(&fs, 0, sizeof(fs));
65f3f191	435	fs.root = debugfs_create_dir(KBUILD_MODNAME, NULL);
f222313a	436	if (!fs.root)
65f3f191	437	printk(KERN_ERR PFX "debugfs: creating \"" KBUILD_MODNAME "\" subdir failed!\n");
f222313a JL	438	fs.dentry_driverinfo = debugfs_create_file("driver", 0444, fs.root, NULL, &drvinfo_fops);
f222313a JL	439	if (!fs.dentry_driverinfo)
65f3f191	440	printk(KERN_ERR PFX "debugfs: creating \"" KBUILD_MODNAME "/driver\" failed!\n");
f222313a JL	441	}
	442
	443	void bcm43xx_debugfs_exit(void)
	444	{
	445	debugfs_remove(fs.dentry_driverinfo);
	446	debugfs_remove(fs.root);
	447	}
	448
	449	void bcm43xx_printk_dump(const char *data,
	450	size_t size,
	451	const char *description)
	452	{
	453	size_t i;
	454	char c;
	455
4c6f749f	456	printk(KERN_INFO PFX "Data dump (%s, %zd bytes):",
f222313a JL	457	description, size);
	458	for (i = 0; i < size; i++) {
	459	c = data[i];
	460	if (i % 8 == 0)
4c6f749f	461	printk("\n" KERN_INFO PFX "0x%08zx: 0x%02x, ", i, c & 0xff);
f222313a JL	462	else
	463	printk("0x%02x, ", c & 0xff);
	464	}
	465	printk("\n");
	466	}
	467
	468	void bcm43xx_printk_bitdump(const unsigned char *data,
	469	size_t bytes, int msb_to_lsb,
	470	const char *description)
	471	{
	472	size_t i;
	473	int j;
	474	const unsigned char *d;
	475
4c6f749f	476	printk(KERN_INFO PFX "* Bitdump (%s, %zd bytes, %s) *",
f222313a JL	477	description, bytes, msb_to_lsb ? "MSB to LSB" : "LSB to MSB");
	478	for (i = 0; i < bytes; i++) {
	479	d = data + i;
	480	if (i % 8 == 0)
4c6f749f	481	printk("\n" KERN_INFO PFX "0x%08zx: ", i);
f222313a JL	482	if (msb_to_lsb) {
	483	for (j = 7; j >= 0; j--) {
	484	if (*d & (1 << j))
	485	printk("1");
	486	else
	487	printk("0");
	488	}
	489	} else {
	490	for (j = 0; j < 8; j++) {
	491	if (*d & (1 << j))
	492	printk("1");
	493	else
	494	printk("0");
	495	}
	496	}
	497	printk(" ");
	498	}
	499	printk("\n");
	500	}