diff options
Diffstat (limited to 'package/b43/src/debugfs.c')
| -rw-r--r-- | package/b43/src/debugfs.c | 668 |
1 files changed, 0 insertions, 668 deletions
diff --git a/package/b43/src/debugfs.c b/package/b43/src/debugfs.c index 210e2789c1..e69de29bb2 100644 --- a/package/b43/src/debugfs.c +++ b/package/b43/src/debugfs.c @@ -1,668 +0,0 @@ -/* - - 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 unsigned long calc_expire_secs(unsigned long now, - unsigned long time, - unsigned long expire) -{ - expire = time + expire; - - if (time_after(now, expire)) - return 0; /* expired */ - if (expire < now) { - /* jiffies wrapped */ - expire -= MAX_JIFFY_OFFSET; - now -= MAX_JIFFY_OFFSET; - } - B43_WARN_ON(expire < now); - - return (expire - now) / HZ; -} - -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; - struct b43_lo_calib *cal; - unsigned long now = jiffies; - struct b43_phy *phy = &dev->phy; - - if (phy->type != B43_PHYTYPE_G) { - fappend("Device is not a G-PHY\n"); - err = -ENODEV; - goto out; - } - lo = phy->lo_control; - fappend("-- Local Oscillator calibration data --\n\n"); - fappend("HW-power-control enabled: %d\n", - dev->phy.hardware_power_control); - fappend("TX Bias: 0x%02X, TX Magn: 0x%02X (expire in %lu sec)\n", - lo->tx_bias, lo->tx_magn, - calc_expire_secs(now, lo->txctl_measured_time, - B43_LO_TXCTL_EXPIRE)); - fappend("Power Vector: 0x%08X%08X (expires in %lu sec)\n", - (unsigned int)((lo->power_vector & 0xFFFFFFFF00000000ULL) >> 32), - (unsigned int)(lo->power_vector & 0x00000000FFFFFFFFULL), - calc_expire_secs(now, lo->pwr_vec_read_time, - B43_LO_PWRVEC_EXPIRE)); - - fappend("\nCalibrated settings:\n"); - list_for_each_entry(cal, &lo->calib_list, list) { - bool active; - - active = (b43_compare_bbatt(&cal->bbatt, &phy->bbatt) && - b43_compare_rfatt(&cal->rfatt, &phy->rfatt)); - fappend("BB(%d), RF(%d,%d) -> I=%d, Q=%d " - "(expires in %lu sec)%s\n", - cal->bbatt.att, - cal->rfatt.att, cal->rfatt.with_padmix, - cal->ctl.i, cal->ctl.q, - calc_expire_secs(now, cal->calib_time, - B43_LO_CALIB_EXPIRE), - active ? " ACTIVE" : ""); - } - - 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 * 16; /* 16 kiB buffer */ - 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; - } - 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); - add_dyn_dbg("debug_lo", B43_DBG_LO, 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); -} - -/* Called with IRQs disabled. */ -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; - spin_lock(&log->lock); /* IRQs are already disabled. */ - 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); -} |