500 lines
13 KiB
C
500 lines
13 KiB
C
/*
|
|
|
|
Broadcom BCM43xx wireless driver
|
|
|
|
debugfs driver debugging code
|
|
|
|
Copyright (c) 2005 Michael Buesch <mbuesch@freenet.de>
|
|
|
|
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_mmio(bcm, flags);
|
|
if (!bcm->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 mmio_len: %u\n", bcm->mmio_addr, bcm->mmio_len);
|
|
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_mmio(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_mmio(bcm, flags);
|
|
if (!bcm->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_mmio(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_mmio(bcm, flags);
|
|
if (!bcm->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_mmio(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_mmio(bcm, flags);
|
|
if (!bcm->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);
|
|
res = buf_size;
|
|
|
|
out_unlock:
|
|
bcm43xx_unlock_mmio(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(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(bcm, flags);
|
|
res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
|
|
bcm43xx_lock(bcm, flags);
|
|
if (*ppos == pos) {
|
|
/* Done. Drop the copied data. */
|
|
e->xmitstatus_printing = 0;
|
|
}
|
|
bcm43xx_unlock(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");
|
|
}
|