+++ /dev/null
-/*
-
- Broadcom BCM43xx wireless driver
-
- debugfs driver debugging code
-
- Copyright (c) 2005 Michael Buesch <mb@bu3sch.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 <linux/mutex.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 big_buffer[1024*256];
-static DEFINE_MUTEX(big_buffer_mutex);
-
-
-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->i_private;
- return 0;
-}
-
-#define fappend(fmt, x...) pos += snprintf(buf + pos, len - pos, fmt , ##x)
-
-static ssize_t drvinfo_read_file(struct file *file, char __user *userbuf,
- size_t count, loff_t *ppos)
-{
- const size_t len = ARRAY_SIZE(big_buffer);
- char *buf = big_buffer;
- size_t pos = 0;
- ssize_t res;
-
- mutex_lock(&big_buffer_mutex);
- /* 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);
- mutex_unlock(&big_buffer_mutex);
-
- return res;
-}
-
-static ssize_t tsf_read_file(struct file *file, char __user *userbuf,
- size_t count, loff_t *ppos)
-{
- struct bcm43xx_wldev *dev = file->private_data;
- const size_t len = ARRAY_SIZE(big_buffer);
- char *buf = big_buffer;
- size_t pos = 0;
- ssize_t res;
- unsigned long flags;
- u64 tsf;
-
- mutex_lock(&big_buffer_mutex);
- mutex_lock(&dev->wl->mutex);
- spin_lock_irqsave(&dev->wl->irq_lock, flags);
- if (bcm43xx_status(dev) != BCM43xx_STAT_INITIALIZED) {
- fappend("Board not initialized.\n");
- goto out;
- }
- bcm43xx_tsf_read(dev, &tsf);
- fappend("0x%08x%08x\n",
- (unsigned int)((tsf & 0xFFFFFFFF00000000ULL) >> 32),
- (unsigned int)(tsf & 0xFFFFFFFFULL));
-
-out:
- spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
- mutex_unlock(&dev->wl->mutex);
- res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
- mutex_unlock(&big_buffer_mutex);
-
- return res;
-}
-
-static ssize_t tsf_write_file(struct file *file, const char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- struct bcm43xx_wldev *dev = file->private_data;
- char *buf = big_buffer;
- ssize_t buf_size;
- ssize_t res;
- unsigned long flags;
- u64 tsf;
-
- mutex_lock(&big_buffer_mutex);
- buf_size = min(count, ARRAY_SIZE(big_buffer) - 1);
- if (copy_from_user(buf, user_buf, buf_size)) {
- res = -EFAULT;
- goto out_unlock_bb;
- }
- mutex_lock(&dev->wl->mutex);
- spin_lock_irqsave(&dev->wl->irq_lock, flags);
- if (bcm43xx_status(dev) != BCM43xx_STAT_INITIALIZED) {
- printk(KERN_INFO PFX "debugfs: Board not initialized.\n");
- res = -EFAULT;
- goto out_unlock;
- }
- if (sscanf(buf, "%llu", (unsigned long long *)(&tsf)) != 1) {
- printk(KERN_INFO PFX "debugfs: invalid values for \"tsf\"\n");
- res = -EINVAL;
- goto out_unlock;
- }
- bcm43xx_tsf_write(dev, tsf);
- mmiowb();
- res = buf_size;
-
-out_unlock:
- spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
- mutex_unlock(&dev->wl->mutex);
-out_unlock_bb:
- mutex_unlock(&big_buffer_mutex);
-
- return res;
-}
-
-static ssize_t txstat_read_file(struct file *file, char __user *userbuf,
- size_t count, loff_t *ppos)
-{
- struct bcm43xx_wldev *dev = file->private_data;
- struct bcm43xx_dfsentry *e = dev->dfsentry;
- struct bcm43xx_txstatus_log *log = &e->txstatlog;
- unsigned long flags;
- char *buf = log->printbuf;
- const size_t len = ARRAY_SIZE(log->printbuf);
- size_t pos = 0;
- ssize_t res;
- int i, idx;
- struct bcm43xx_txstatus *stat;
-
- mutex_lock(&big_buffer_mutex);
- spin_lock_irqsave(&log->lock, flags);
- if (!log->printing) {
- log->printing = 1;
- fappend("bcm43xx TX status reports:\n\n"
- "index | cookie | seq | phy_stat | frame_count | "
- "rts_count | supp_reason | pm_indicated | "
- "intermediate | for_ampdu | acked\n"
- "---\n");
- i = log->end + 1;
- idx = 0;
- while (1) {
- if (i == BCM43xx_NR_LOGGED_TXSTATUS)
- i = 0;
- stat = &(log->log[i]);
- if (stat->cookie) {
- fappend("%03d | "
- "0x%04X | 0x%04X | 0x%02X | "
- "0x%X | 0x%X | "
- "%u | %u | "
- "%u | %u | %u\n",
- idx,
- stat->cookie, stat->seq, stat->phy_stat,
- stat->frame_count, stat->rts_count,
- stat->supp_reason, stat->pm_indicated,
- stat->intermediate, stat->for_ampdu,
- stat->acked);
- idx++;
- }
- if (i == log->end)
- break;
- i++;
- }
- log->buf_avail = pos;
- }
- memcpy(big_buffer, buf,
- min(log->buf_avail, ARRAY_SIZE(big_buffer)));
- spin_unlock_irqrestore(&log->lock, flags);
-
- res = simple_read_from_buffer(userbuf, count, ppos,
- big_buffer,
- log->buf_avail);
- if (*ppos == log->buf_avail) {
- spin_lock_irqsave(&log->lock, flags);
- log->printing = 0;
- spin_unlock_irqrestore(&log->lock, flags);
- }
- mutex_unlock(&big_buffer_mutex);
-
- return res;
-}
-
-static ssize_t restart_write_file(struct file *file, const char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- struct bcm43xx_wldev *dev = file->private_data;
- char *buf = big_buffer;
- ssize_t buf_size;
- ssize_t res;
- unsigned long flags;
-
- mutex_lock(&big_buffer_mutex);
- buf_size = min(count, ARRAY_SIZE(big_buffer) - 1);
- if (copy_from_user(buf, user_buf, buf_size)) {
- res = -EFAULT;
- goto out_unlock_bb;
- }
- mutex_lock(&dev->wl->mutex);
- spin_lock_irqsave(&dev->wl->irq_lock, flags);
- if (bcm43xx_status(dev) != BCM43xx_STAT_INITIALIZED) {
- printk(KERN_INFO PFX "debugfs: Board not initialized.\n");
- res = -EFAULT;
- goto out_unlock;
- }
- if (count > 0 && buf[0] == '1') {
- bcm43xx_controller_restart(dev, "manually restarted");
- res = count;
- } else
- res = -EINVAL;
-
-out_unlock:
- spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
- mutex_unlock(&dev->wl->mutex);
-out_unlock_bb:
- mutex_unlock(&big_buffer_mutex);
-
- return res;
-}
-
-static ssize_t txpower_g_read_file(struct file *file, char __user *userbuf,
- size_t count, loff_t *ppos)
-{
- struct bcm43xx_wldev *dev = file->private_data;
- const size_t len = ARRAY_SIZE(big_buffer);
- char *buf = big_buffer;
- size_t pos = 0;
- ssize_t res;
- unsigned long flags;
-
- mutex_lock(&big_buffer_mutex);
- mutex_lock(&dev->wl->mutex);
- spin_lock_irqsave(&dev->wl->irq_lock, flags);
- if ((bcm43xx_status(dev) != BCM43xx_STAT_INITIALIZED) ||
- !dev->started) {
- fappend("Not initialized\n");
- goto out;
- }
- if (dev->phy.type != BCM43xx_PHYTYPE_G) {
- fappend("Device is not a G-PHY\n");
- goto out;
- }
- fappend("Control: %s\n", dev->phy.manual_txpower_control ?
- "MANUAL" : "AUTOMATIC");
- fappend("Baseband attenuation: %u\n", dev->phy.bbatt.att);
- fappend("Radio attenuation: %u\n", dev->phy.rfatt.att);
- fappend("TX Mixer Gain: %s\n", (dev->phy.tx_control & BCM43xx_TXCTL_TXMIX) ?
- "ON" : "OFF");
- fappend("PA Gain 2dB: %s\n", (dev->phy.tx_control & BCM43xx_TXCTL_PA2DB) ?
- "ON" : "OFF");
- fappend("PA Gain 3dB: %s\n", (dev->phy.tx_control & BCM43xx_TXCTL_PA3DB) ?
- "ON" : "OFF");
- fappend("\n\n");
- fappend("You can write to this file:\n");
- fappend("Writing \"auto\" enables automatic txpower control.\n");
- fappend("Writing the attenuation values as \"bbatt rfatt txmix pa2db pa3db\" "
- "enables manual txpower control.\n");
- fappend("Example: 5 4 0 0 1\n");
- fappend("Enables manual control with Baseband attenuation 5, "
- "Radio attenuation 4, No TX Mixer Gain, "
- "No PA Gain 2dB, With PA Gain 3dB.\n");
-
-out:
- spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
- mutex_unlock(&dev->wl->mutex);
- res = simple_read_from_buffer(userbuf, count, ppos, buf, pos);
- mutex_unlock(&big_buffer_mutex);
-
- return res;
-}
-
-static ssize_t txpower_g_write_file(struct file *file, const char __user *user_buf,
- size_t count, loff_t *ppos)
-{
- struct bcm43xx_wldev *dev = file->private_data;
- char *buf = big_buffer;
- ssize_t buf_size;
- ssize_t res;
- unsigned long flags, phy_flags;
-
- mutex_lock(&big_buffer_mutex);
- buf_size = min(count, ARRAY_SIZE(big_buffer) - 1);
- if (copy_from_user(buf, user_buf, buf_size)) {
- res = -EFAULT;
- goto out_unlock_bb;
- }
- mutex_lock(&dev->wl->mutex);
- spin_lock_irqsave(&dev->wl->irq_lock, flags);
- if ((bcm43xx_status(dev) != BCM43xx_STAT_INITIALIZED) ||
- !dev->started) {
- printk(KERN_INFO PFX "debugfs: Board not initialized.\n");
- res = -ENODEV;
- goto out_unlock;
- }
- if (dev->phy.type != BCM43xx_PHYTYPE_G) {
- printk(KERN_ERR PFX "debugfs: Device is not a G-PHY\n");
- res = -ENODEV;
- goto out_unlock;
- }
- if ((buf_size >= 4) && (memcmp(buf, "auto", 4) == 0)) {
- /* Automatic control */
- dev->phy.manual_txpower_control = 0;
- bcm43xx_phy_xmitpower(dev);
- } else {
- int bbatt = 0, rfatt = 0, txmix = 0, pa2db = 0, pa3db = 0;
- /* Manual control */
- if (sscanf(buf, "%d %d %d %d %d", &bbatt, &rfatt,
- &txmix, &pa2db, &pa3db) != 5) {
- printk(KERN_INFO PFX "debugfs: invalid value for \"tx_power_g\"\n");
- res = -EINVAL;
- goto out_unlock;
- }
- bcm43xx_put_attenuation_into_ranges(dev, &bbatt, &rfatt);
- dev->phy.manual_txpower_control = 1;
- dev->phy.bbatt.att = bbatt;
- dev->phy.rfatt.att = rfatt;
- dev->phy.tx_control = 0;
- if (txmix)
- dev->phy.tx_control |= BCM43xx_TXCTL_TXMIX;
- if (pa2db)
- dev->phy.tx_control |= BCM43xx_TXCTL_PA2DB;
- if (pa3db)
- dev->phy.tx_control |= BCM43xx_TXCTL_PA3DB;
- bcm43xx_phy_lock(dev, phy_flags);
- bcm43xx_radio_lock(dev);
- bcm43xx_set_txpower_g(dev, &dev->phy.bbatt,
- &dev->phy.rfatt, dev->phy.tx_control);
- bcm43xx_radio_unlock(dev);
- bcm43xx_phy_unlock(dev, phy_flags);
- }
- res = buf_size;
-out_unlock:
- spin_unlock_irqrestore(&dev->wl->irq_lock, flags);
- mutex_unlock(&dev->wl->mutex);
-out_unlock_bb:
- mutex_unlock(&big_buffer_mutex);
-
- return res;
-}
-
-
-#undef fappend
-
-
-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,
-};
-
-static struct file_operations txpower_g_fops = {
- .read = txpower_g_read_file,
- .write = txpower_g_write_file,
- .open = open_file_generic,
-};
-
-static struct file_operations restart_fops = {
- .write = restart_write_file,
- .open = open_file_generic,
-};
-
-
-int bcm43xx_debug(struct bcm43xx_wldev *dev, enum bcm43xx_dyndbg feature)
-{
- return !!(dev->dfsentry->dyn_debug[feature]);
-}
-
-static void bcm43xx_remove_dynamic_debug(struct bcm43xx_wldev *dev)
-{
- struct bcm43xx_dfsentry *e = dev->dfsentry;
- int i;
-
- for (i = 0; i < __BCM43xx_NR_DYNDBG; i++)
- debugfs_remove(e->dyn_debug_dentries[i]);
-}
-
-static void bcm43xx_add_dynamic_debug(struct bcm43xx_wldev *dev)
-{
- struct bcm43xx_dfsentry *e = dev->dfsentry;
- struct dentry *d;
-
-#define add_dyn_dbg(name, id, initstate) do { \
- e->dyn_debug[id] = (initstate); \
- d = debugfs_create_bool(name, 0600, e->subdir, \
- &(e->dyn_debug[id])); \
- if (!IS_ERR(d)) \
- e->dyn_debug_dentries[id] = d; \
- } while (0)
-
- add_dyn_dbg("debug_xmitpower", BCM43xx_DBG_XMITPOWER, 0);
- add_dyn_dbg("debug_dmaoverflow", BCM43xx_DBG_DMAOVERFLOW, 0);
- add_dyn_dbg("debug_dmaverbose", BCM43xx_DBG_DMAVERBOSE, 0);
- add_dyn_dbg("debug_pwork_fast", BCM43xx_DBG_PWORK_FAST, 0);
- add_dyn_dbg("debug_pwork_stop", BCM43xx_DBG_PWORK_STOP, 0);
-
-#undef add_dyn_dbg
-}
-
-void bcm43xx_debugfs_add_device(struct bcm43xx_wldev *dev)
-{
- struct bcm43xx_dfsentry *e;
- struct bcm43xx_txstatus_log *log;
- char devdir[16];
-
- assert(dev);
- e = kzalloc(sizeof(*e), GFP_KERNEL);
- if (!e) {
- printk(KERN_ERR PFX "debugfs: add device OOM\n");
- return;
- }
- e->dev = dev;
- log = &e->txstatlog;
- log->log = kcalloc(BCM43xx_NR_LOGGED_TXSTATUS,
- sizeof(struct bcm43xx_txstatus),
- GFP_KERNEL);
- if (!log->log) {
- printk(KERN_ERR PFX "debugfs: add device txstatus OOM\n");
- kfree(e);
- return;
- }
- log->end = -1;
- spin_lock_init(&log->lock);
-
- dev->dfsentry = e;
-
- snprintf(devdir, sizeof(devdir), "%s", wiphy_name(dev->wl->hw->wiphy));
- e->subdir = debugfs_create_dir(devdir, fs.root);
- if (!e->subdir || IS_ERR(e->subdir)) {
- e->subdir = NULL;
- kfree(log->log);
- kfree(e);
- return;
- }
-
- e->dentry_tsf = debugfs_create_file("tsf", 0600, e->subdir,
- dev, &tsf_fops);
- if (IS_ERR(e->dentry_tsf))
- e->dentry_tsf = NULL;
- e->dentry_txstat = debugfs_create_file("tx_status", 0400, e->subdir,
- dev, &txstat_fops);
- if (IS_ERR(e->dentry_txstat))
- e->dentry_txstat = NULL;
- e->dentry_txpower_g = debugfs_create_file("tx_power_g", 0600, e->subdir,
- dev, &txpower_g_fops);
- if (IS_ERR(e->dentry_txpower_g))
- e->dentry_txpower_g = NULL;
- e->dentry_restart = debugfs_create_file("restart", 0200, e->subdir,
- dev, &restart_fops);
- if (IS_ERR(e->dentry_restart))
- e->dentry_restart = NULL;
-
- bcm43xx_add_dynamic_debug(dev);
-}
-
-void bcm43xx_debugfs_remove_device(struct bcm43xx_wldev *dev)
-{
- struct bcm43xx_dfsentry *e;
-
- if (!dev)
- return;
- e = dev->dfsentry;
- if (!e)
- return;
- bcm43xx_remove_dynamic_debug(dev);
- debugfs_remove(e->dentry_tsf);
- debugfs_remove(e->dentry_txstat);
- debugfs_remove(e->dentry_restart);
- debugfs_remove(e->dentry_txpower_g);
- debugfs_remove(e->subdir);
- kfree(e->txstatlog.log);
- kfree(e);
-}
-
-void bcm43xx_debugfs_log_txstat(struct bcm43xx_wldev *dev,
- const struct bcm43xx_txstatus *status)
-{
- struct bcm43xx_dfsentry *e = dev->dfsentry;
- struct bcm43xx_txstatus_log *log;
- struct bcm43xx_txstatus *cur;
- int i;
-
- log = &e->txstatlog;
- assert(irqs_disabled());
- spin_lock(&log->lock);
- i = log->end + 1;
- if (i == BCM43xx_NR_LOGGED_TXSTATUS)
- i = 0;
- log->end = i;
- cur = &(log->log[i]);
- memcpy(cur, status, sizeof(*cur));
- spin_unlock(&log->lock);
-}
-
-void bcm43xx_debugfs_init(void)
-{
- memset(&fs, 0, sizeof(fs));
- fs.root = debugfs_create_dir(KBUILD_MODNAME, NULL);
- if (!fs.root || IS_ERR(fs.root)) {
- fs.root = NULL;
- return;
- }
- fs.dentry_driverinfo = debugfs_create_file("driver", 0444, fs.root,
- NULL, &drvinfo_fops);
- if (IS_ERR(fs.dentry_driverinfo))
- fs.dentry_driverinfo = NULL;
-}
-
-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)
-{
- unsigned int i;
- char c;
-
- printk(KERN_INFO PFX "Data dump (%s, %lu bytes):",
- description, (unsigned long)size);
- for (i = 0; i < size; i++) {
- c = data[i];
- if (i % 8 == 0)
- printk("\n" KERN_INFO PFX "0x%08x: 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)
-{
- unsigned int i;
- int j;
- const unsigned char *d;
-
- printk(KERN_INFO PFX "*** Bitdump (%s, %lu bytes, %s) ***",
- description, (unsigned long)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%08x: ", 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");
-}
projects / openwrt.git / blobdiff