-/*
-
- Broadcom B43 wireless driver
-
- debugfs driver debugging code
-
- Copyright (c) 2005-2007 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 "b43.h"
-#include "main.h"
-#include "debugfs.h"
-#include "dma.h"
-#include "xmit.h"
-
-
-/* The root directory. */
-static struct dentry *rootdir;
-
-struct b43_debugfs_fops {
- ssize_t (*read)(struct b43_wldev *dev, char *buf, size_t bufsize);
- int (*write)(struct b43_wldev *dev, const char *buf, size_t count);
- struct file_operations fops;
- /* Offset of struct b43_dfs_file in struct b43_dfsentry */
- size_t file_struct_offset;
- /* Take wl->irq_lock before calling read/write? */
- bool take_irqlock;
-};
-
-static inline
-struct b43_dfs_file * fops_to_dfs_file(struct b43_wldev *dev,
- const struct b43_debugfs_fops *dfops)
-{
- void *p;
-
- p = dev->dfsentry;
- p += dfops->file_struct_offset;
-
- return p;
-}
-
-
-#define fappend(fmt, x...) \
- do { \
- if (bufsize - count) \
- count += snprintf(buf + count, \
- bufsize - count, \
- fmt , ##x); \
- else \
- printk(KERN_ERR "b43: fappend overflow\n"); \
- } while (0)
-
-
-/* wl->irq_lock is locked */
-static ssize_t tsf_read_file(struct b43_wldev *dev,
- char *buf, size_t bufsize)
-{
- ssize_t count = 0;
- u64 tsf;
-
- b43_tsf_read(dev, &tsf);
- fappend("0x%08x%08x\n",
- (unsigned int)((tsf & 0xFFFFFFFF00000000ULL) >> 32),
- (unsigned int)(tsf & 0xFFFFFFFFULL));
-
- return count;
-}
-
-/* wl->irq_lock is locked */
-static int tsf_write_file(struct b43_wldev *dev,
- const char *buf, size_t count)
-{
- u64 tsf;
-
- if (sscanf(buf, "%llu", (unsigned long long *)(&tsf)) != 1)
- return -EINVAL;
- b43_tsf_write(dev, tsf);
-
- return 0;
-}
-
-/* wl->irq_lock is locked */
-static ssize_t ucode_regs_read_file(struct b43_wldev *dev,
- char *buf, size_t bufsize)
-{
- ssize_t count = 0;
- int i;
-
- for (i = 0; i < 64; i++) {
- fappend("r%d = 0x%04x\n", i,
- b43_shm_read16(dev, B43_SHM_SCRATCH, i));
- }
-
- return count;
-}
-
-/* wl->irq_lock is locked */
-static ssize_t shm_read_file(struct b43_wldev *dev,
- char *buf, size_t bufsize)
-{
- ssize_t count = 0;
- int i;
- u16 tmp;
- __le16 *le16buf = (__le16 *)buf;
-
- for (i = 0; i < 0x1000; i++) {
- if (bufsize < sizeof(tmp))
- break;
- tmp = b43_shm_read16(dev, B43_SHM_SHARED, 2 * i);
- le16buf[i] = cpu_to_le16(tmp);
- count += sizeof(tmp);
- bufsize -= sizeof(tmp);
- }
-
- return count;
-}
-
-static ssize_t txstat_read_file(struct b43_wldev *dev,
- char *buf, size_t bufsize)
-{
- struct b43_txstatus_log *log = &dev->dfsentry->txstatlog;
- ssize_t count = 0;
- unsigned long flags;
- int i, idx;
- struct b43_txstatus *stat;
-
- spin_lock_irqsave(&log->lock, flags);
- if (log->end < 0) {
- fappend("Nothing transmitted, yet\n");
- goto out_unlock;
- }
- fappend("b43 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 == B43_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++;
- }
-out_unlock:
- spin_unlock_irqrestore(&log->lock, flags);
-
- return count;
-}
-
-static ssize_t txpower_g_read_file(struct b43_wldev *dev,
- char *buf, size_t bufsize)
-{
- ssize_t count = 0;
-
- if (dev->phy.type != B43_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 & B43_TXCTL_TXMIX) ? "ON" : "OFF");
- fappend("PA Gain 2dB: %s\n",
- (dev->phy.tx_control & B43_TXCTL_PA2DB) ? "ON" : "OFF");
- fappend("PA Gain 3dB: %s\n",
- (dev->phy.tx_control & B43_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:
- return count;
-}
-
-static int txpower_g_write_file(struct b43_wldev *dev,
- const char *buf, size_t count)
-{
- if (dev->phy.type != B43_PHYTYPE_G)
- return -ENODEV;
- if ((count >= 4) && (memcmp(buf, "auto", 4) == 0)) {
- /* Automatic control */
- dev->phy.manual_txpower_control = 0;
- b43_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)
- return -EINVAL;
- b43_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 |= B43_TXCTL_TXMIX;
- if (pa2db)
- dev->phy.tx_control |= B43_TXCTL_PA2DB;
- if (pa3db)
- dev->phy.tx_control |= B43_TXCTL_PA3DB;
- b43_phy_lock(dev);
- b43_radio_lock(dev);
- b43_set_txpower_g(dev, &dev->phy.bbatt,
- &dev->phy.rfatt, dev->phy.tx_control);
- b43_radio_unlock(dev);
- b43_phy_unlock(dev);
- }
-
- return 0;
-}
-
-/* wl->irq_lock is locked */
-static int restart_write_file(struct b43_wldev *dev,
- const char *buf, size_t count)
-{
- int err = 0;
-
- if (count > 0 && buf[0] == '1') {
- b43_controller_restart(dev, "manually restarted");
- } else
- err = -EINVAL;
-
- return err;
-}
-
-static ssize_t append_lo_table(ssize_t count, char *buf, const size_t bufsize,
- struct b43_loctl table[B43_NR_BB][B43_NR_RF])
-{
- unsigned int i, j;
- struct b43_loctl *ctl;
-
- for (i = 0; i < B43_NR_BB; i++) {
- for (j = 0; j < B43_NR_RF; j++) {
- ctl = &(table[i][j]);
- fappend("(bbatt %2u, rfatt %2u) -> "
- "(I %+3d, Q %+3d, Used: %d, Calibrated: %d)\n",
- i, j, ctl->i, ctl->q,
- ctl->used,
- b43_loctl_is_calibrated(ctl));
- }
- }
-
- return count;
-}
-
-static ssize_t loctls_read_file(struct b43_wldev *dev,
- char *buf, size_t bufsize)
-{
- ssize_t count = 0;
- struct b43_txpower_lo_control *lo;
- int i, err = 0;
-
- if (dev->phy.type != B43_PHYTYPE_G) {
- fappend("Device is not a G-PHY\n");
- err = -ENODEV;
- goto out;
- }
- lo = dev->phy.lo_control;
- fappend("-- Local Oscillator calibration data --\n\n");
- fappend("Measured: %d, Rebuild: %d, HW-power-control: %d\n",
- lo->lo_measured,
- lo->rebuild,
- dev->phy.hardware_power_control);
- fappend("TX Bias: 0x%02X, TX Magn: 0x%02X\n",
- lo->tx_bias, lo->tx_magn);
- fappend("Power Vector: 0x%08X%08X\n",
- (unsigned int)((lo->power_vector & 0xFFFFFFFF00000000ULL) >> 32),
- (unsigned int)(lo->power_vector & 0x00000000FFFFFFFFULL));
- fappend("\nControl table WITH PADMIX:\n");
- count = append_lo_table(count, buf, bufsize, lo->with_padmix);
- fappend("\nControl table WITHOUT PADMIX:\n");
- count = append_lo_table(count, buf, bufsize, lo->no_padmix);
- fappend("\nUsed RF attenuation values: Value(WithPadmix flag)\n");
- for (i = 0; i < lo->rfatt_list.len; i++) {
- fappend("%u(%d), ",
- lo->rfatt_list.list[i].att,
- lo->rfatt_list.list[i].with_padmix);
- }
- fappend("\n");
- fappend("\nUsed Baseband attenuation values:\n");
- for (i = 0; i < lo->bbatt_list.len; i++) {
- fappend("%u, ",
- lo->bbatt_list.list[i].att);
- }
- fappend("\n");
-
-out:
- return err ? err : count;
-}
-
-#undef fappend
-
-static int b43_debugfs_open(struct inode *inode, struct file *file)
-{
- file->private_data = inode->i_private;
- return 0;
-}
-
-static ssize_t b43_debugfs_read(struct file *file, char __user *userbuf,
- size_t count, loff_t *ppos)
-{
- struct b43_wldev *dev;
- struct b43_debugfs_fops *dfops;
- struct b43_dfs_file *dfile;
- ssize_t uninitialized_var(ret);
- char *buf;
- const size_t bufsize = 1024 * 128;
- const size_t buforder = get_order(bufsize);
- int err = 0;
-
- if (!count)
- return 0;
- dev = file->private_data;
- if (!dev)
- return -ENODEV;
-
- mutex_lock(&dev->wl->mutex);
- if (b43_status(dev) < B43_STAT_INITIALIZED) {
- err = -ENODEV;
- goto out_unlock;
- }
-
- dfops = container_of(file->f_op, struct b43_debugfs_fops, fops);
- if (!dfops->read) {
- err = -ENOSYS;
- goto out_unlock;
- }
- dfile = fops_to_dfs_file(dev, dfops);
-
- if (!dfile->buffer) {
- buf = (char *)__get_free_pages(GFP_KERNEL, buforder);
- if (!buf) {
- err = -ENOMEM;
- goto out_unlock;
- }
- /* Sparse warns about the following memset, because it has a big
- * size value. That warning is bogus, so I will ignore it. --mb */
- memset(buf, 0, bufsize);
- if (dfops->take_irqlock) {
- spin_lock_irq(&dev->wl->irq_lock);
- ret = dfops->read(dev, buf, bufsize);
- spin_unlock_irq(&dev->wl->irq_lock);
- } else
- ret = dfops->read(dev, buf, bufsize);
- if (ret <= 0) {
- free_pages((unsigned long)buf, buforder);
- err = ret;
- goto out_unlock;
- }
- dfile->data_len = ret;
- dfile->buffer = buf;
- }
-
- ret = simple_read_from_buffer(userbuf, count, ppos,
- dfile->buffer,
- dfile->data_len);
- if (*ppos >= dfile->data_len) {
- free_pages((unsigned long)dfile->buffer, buforder);
- dfile->buffer = NULL;
- dfile->data_len = 0;
- }
-out_unlock:
- mutex_unlock(&dev->wl->mutex);
-
- return err ? err : ret;
-}
-
-static ssize_t b43_debugfs_write(struct file *file,
- const char __user *userbuf,
- size_t count, loff_t *ppos)
-{
- struct b43_wldev *dev;
- struct b43_debugfs_fops *dfops;
- char *buf;
- int err = 0;
-
- if (!count)
- return 0;
- if (count > PAGE_SIZE)
- return -E2BIG;
- dev = file->private_data;
- if (!dev)
- return -ENODEV;
-
- mutex_lock(&dev->wl->mutex);
- if (b43_status(dev) < B43_STAT_INITIALIZED) {
- err = -ENODEV;
- goto out_unlock;
- }
-
- dfops = container_of(file->f_op, struct b43_debugfs_fops, fops);
- if (!dfops->write) {
- err = -ENOSYS;
- goto out_unlock;
- }
-
- buf = (char *)get_zeroed_page(GFP_KERNEL);
- if (!buf) {
- err = -ENOMEM;
- goto out_unlock;
- }
- if (copy_from_user(buf, userbuf, count)) {
- err = -EFAULT;
- goto out_freepage;
- }
- if (dfops->take_irqlock) {
- spin_lock_irq(&dev->wl->irq_lock);
- err = dfops->write(dev, buf, count);
- spin_unlock_irq(&dev->wl->irq_lock);
- } else
- err = dfops->write(dev, buf, count);
- if (err)
- goto out_freepage;
-
-out_freepage:
- free_page((unsigned long)buf);
-out_unlock:
- mutex_unlock(&dev->wl->mutex);
-
- return err ? err : count;
-}
-
-
-#define B43_DEBUGFS_FOPS(name, _read, _write, _take_irqlock) \
- static struct b43_debugfs_fops fops_##name = { \
- .read = _read, \
- .write = _write, \
- .fops = { \
- .open = b43_debugfs_open, \
- .read = b43_debugfs_read, \
- .write = b43_debugfs_write, \
- }, \
- .file_struct_offset = offsetof(struct b43_dfsentry, \
- file_##name), \
- .take_irqlock = _take_irqlock, \
- }
-
-B43_DEBUGFS_FOPS(tsf, tsf_read_file, tsf_write_file, 1);
-B43_DEBUGFS_FOPS(ucode_regs, ucode_regs_read_file, NULL, 1);
-B43_DEBUGFS_FOPS(shm, shm_read_file, NULL, 1);
-B43_DEBUGFS_FOPS(txstat, txstat_read_file, NULL, 0);
-B43_DEBUGFS_FOPS(txpower_g, txpower_g_read_file, txpower_g_write_file, 0);
-B43_DEBUGFS_FOPS(restart, NULL, restart_write_file, 1);
-B43_DEBUGFS_FOPS(loctls, loctls_read_file, NULL, 0);
-
-
-int b43_debug(struct b43_wldev *dev, enum b43_dyndbg feature)
-{
- return !!(dev->dfsentry && dev->dfsentry->dyn_debug[feature]);
-}
-
-static void b43_remove_dynamic_debug(struct b43_wldev *dev)
-{
- struct b43_dfsentry *e = dev->dfsentry;
- int i;
-
- for (i = 0; i < __B43_NR_DYNDBG; i++)
- debugfs_remove(e->dyn_debug_dentries[i]);
-}
-
-static void b43_add_dynamic_debug(struct b43_wldev *dev)
-{
- struct b43_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", B43_DBG_XMITPOWER, 0);
- add_dyn_dbg("debug_dmaoverflow", B43_DBG_DMAOVERFLOW, 0);
- add_dyn_dbg("debug_dmaverbose", B43_DBG_DMAVERBOSE, 0);
- add_dyn_dbg("debug_pwork_fast", B43_DBG_PWORK_FAST, 0);
- add_dyn_dbg("debug_pwork_stop", B43_DBG_PWORK_STOP, 0);
-
-#undef add_dyn_dbg
-}
-
-void b43_debugfs_add_device(struct b43_wldev *dev)
-{
- struct b43_dfsentry *e;
- struct b43_txstatus_log *log;
- char devdir[16];
-
- B43_WARN_ON(!dev);
- e = kzalloc(sizeof(*e), GFP_KERNEL);
- if (!e) {
- b43err(dev->wl, "debugfs: add device OOM\n");
- return;
- }
- e->dev = dev;
- log = &e->txstatlog;
- log->log = kcalloc(B43_NR_LOGGED_TXSTATUS,
- sizeof(struct b43_txstatus), GFP_KERNEL);
- if (!log->log) {
- b43err(dev->wl, "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, rootdir);
- if (!e->subdir || IS_ERR(e->subdir)) {
- if (e->subdir == ERR_PTR(-ENODEV)) {
- b43dbg(dev->wl, "DebugFS (CONFIG_DEBUG_FS) not "
- "enabled in kernel config\n");
- } else {
- b43err(dev->wl, "debugfs: cannot create %s directory\n",
- devdir);
- }
- dev->dfsentry = NULL;
- kfree(log->log);
- kfree(e);
- return;
- }
-
-#define ADD_FILE(name, mode) \
- do { \
- struct dentry *d; \
- d = debugfs_create_file(__stringify(name), \
- mode, e->subdir, dev, \
- &fops_##name.fops); \
- e->file_##name.dentry = NULL; \
- if (!IS_ERR(d)) \
- e->file_##name.dentry = d; \
- } while (0)
-
-
- ADD_FILE(tsf, 0600);
- ADD_FILE(ucode_regs, 0400);
- ADD_FILE(shm, 0400);
- ADD_FILE(txstat, 0400);
- ADD_FILE(txpower_g, 0600);
- ADD_FILE(restart, 0200);
- ADD_FILE(loctls, 0400);
-
-#undef ADD_FILE
-
- b43_add_dynamic_debug(dev);
-}
-
-void b43_debugfs_remove_device(struct b43_wldev *dev)
-{
- struct b43_dfsentry *e;
-
- if (!dev)
- return;
- e = dev->dfsentry;
- if (!e)
- return;
- b43_remove_dynamic_debug(dev);
-
- debugfs_remove(e->file_tsf.dentry);
- debugfs_remove(e->file_ucode_regs.dentry);
- debugfs_remove(e->file_shm.dentry);
- debugfs_remove(e->file_txstat.dentry);
- debugfs_remove(e->file_txpower_g.dentry);
- debugfs_remove(e->file_restart.dentry);
- debugfs_remove(e->file_loctls.dentry);
-
- debugfs_remove(e->subdir);
- kfree(e->txstatlog.log);
- kfree(e);
-}
-
-void b43_debugfs_log_txstat(struct b43_wldev *dev,
- const struct b43_txstatus *status)
-{
- struct b43_dfsentry *e = dev->dfsentry;
- struct b43_txstatus_log *log;
- struct b43_txstatus *cur;
- int i;
-
- if (!e)
- return;
- log = &e->txstatlog;
- B43_WARN_ON(!irqs_disabled());
- spin_lock(&log->lock);
- i = log->end + 1;
- if (i == B43_NR_LOGGED_TXSTATUS)
- i = 0;
- log->end = i;
- cur = &(log->log[i]);
- memcpy(cur, status, sizeof(*cur));
- spin_unlock(&log->lock);
-}
-
-void b43_debugfs_init(void)
-{
- rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
- if (IS_ERR(rootdir))
- rootdir = NULL;
-}
-
-void b43_debugfs_exit(void)
-{
- debugfs_remove(rootdir);
-}
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