diff options
Diffstat (limited to 'drivers/net/wireless/ath/ath5k/debug.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath5k/debug.c | 538 |
1 files changed, 538 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c new file mode 100644 index 00000000000..9770bb3d40f --- /dev/null +++ b/drivers/net/wireless/ath/ath5k/debug.c @@ -0,0 +1,538 @@ +/* + * Copyright (c) 2007-2008 Bruno Randolf <bruno@thinktube.com> + * + * This file is free software: you may copy, redistribute 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 file 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. If not, see <http://www.gnu.org/licenses/>. + * + * + * This file incorporates work covered by the following copyright and + * permission notice: + * + * Copyright (c) 2002-2005 Sam Leffler, Errno Consulting + * Copyright (c) 2004-2005 Atheros Communications, Inc. + * Copyright (c) 2006 Devicescape Software, Inc. + * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> + * Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu> + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any + * redistribution must be conditioned upon including a substantially + * similar Disclaimer requirement for further binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY + * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL + * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, + * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER + * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF + * THE POSSIBILITY OF SUCH DAMAGES. + */ + +#include "base.h" +#include "debug.h" + +static unsigned int ath5k_debug; +module_param_named(debug, ath5k_debug, uint, 0); + + +#ifdef CONFIG_ATH5K_DEBUG + +#include <linux/seq_file.h> +#include "reg.h" + +static struct dentry *ath5k_global_debugfs; + +static int ath5k_debugfs_open(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + + +/* debugfs: registers */ + +struct reg { + const char *name; + int addr; +}; + +#define REG_STRUCT_INIT(r) { #r, r } + +/* just a few random registers, might want to add more */ +static const struct reg regs[] = { + REG_STRUCT_INIT(AR5K_CR), + REG_STRUCT_INIT(AR5K_RXDP), + REG_STRUCT_INIT(AR5K_CFG), + REG_STRUCT_INIT(AR5K_IER), + REG_STRUCT_INIT(AR5K_BCR), + REG_STRUCT_INIT(AR5K_RTSD0), + REG_STRUCT_INIT(AR5K_RTSD1), + REG_STRUCT_INIT(AR5K_TXCFG), + REG_STRUCT_INIT(AR5K_RXCFG), + REG_STRUCT_INIT(AR5K_RXJLA), + REG_STRUCT_INIT(AR5K_MIBC), + REG_STRUCT_INIT(AR5K_TOPS), + REG_STRUCT_INIT(AR5K_RXNOFRM), + REG_STRUCT_INIT(AR5K_TXNOFRM), + REG_STRUCT_INIT(AR5K_RPGTO), + REG_STRUCT_INIT(AR5K_RFCNT), + REG_STRUCT_INIT(AR5K_MISC), + REG_STRUCT_INIT(AR5K_QCUDCU_CLKGT), + REG_STRUCT_INIT(AR5K_ISR), + REG_STRUCT_INIT(AR5K_PISR), + REG_STRUCT_INIT(AR5K_SISR0), + REG_STRUCT_INIT(AR5K_SISR1), + REG_STRUCT_INIT(AR5K_SISR2), + REG_STRUCT_INIT(AR5K_SISR3), + REG_STRUCT_INIT(AR5K_SISR4), + REG_STRUCT_INIT(AR5K_IMR), + REG_STRUCT_INIT(AR5K_PIMR), + REG_STRUCT_INIT(AR5K_SIMR0), + REG_STRUCT_INIT(AR5K_SIMR1), + REG_STRUCT_INIT(AR5K_SIMR2), + REG_STRUCT_INIT(AR5K_SIMR3), + REG_STRUCT_INIT(AR5K_SIMR4), + REG_STRUCT_INIT(AR5K_DCM_ADDR), + REG_STRUCT_INIT(AR5K_DCCFG), + REG_STRUCT_INIT(AR5K_CCFG), + REG_STRUCT_INIT(AR5K_CPC0), + REG_STRUCT_INIT(AR5K_CPC1), + REG_STRUCT_INIT(AR5K_CPC2), + REG_STRUCT_INIT(AR5K_CPC3), + REG_STRUCT_INIT(AR5K_CPCOVF), + REG_STRUCT_INIT(AR5K_RESET_CTL), + REG_STRUCT_INIT(AR5K_SLEEP_CTL), + REG_STRUCT_INIT(AR5K_INTPEND), + REG_STRUCT_INIT(AR5K_SFR), + REG_STRUCT_INIT(AR5K_PCICFG), + REG_STRUCT_INIT(AR5K_GPIOCR), + REG_STRUCT_INIT(AR5K_GPIODO), + REG_STRUCT_INIT(AR5K_SREV), +}; + +static void *reg_start(struct seq_file *seq, loff_t *pos) +{ + return *pos < ARRAY_SIZE(regs) ? (void *)®s[*pos] : NULL; +} + +static void reg_stop(struct seq_file *seq, void *p) +{ + /* nothing to do */ +} + +static void *reg_next(struct seq_file *seq, void *p, loff_t *pos) +{ + ++*pos; + return *pos < ARRAY_SIZE(regs) ? (void *)®s[*pos] : NULL; +} + +static int reg_show(struct seq_file *seq, void *p) +{ + struct ath5k_softc *sc = seq->private; + struct reg *r = p; + seq_printf(seq, "%-25s0x%08x\n", r->name, + ath5k_hw_reg_read(sc->ah, r->addr)); + return 0; +} + +static const struct seq_operations register_seq_ops = { + .start = reg_start, + .next = reg_next, + .stop = reg_stop, + .show = reg_show +}; + +static int open_file_registers(struct inode *inode, struct file *file) +{ + struct seq_file *s; + int res; + res = seq_open(file, ®ister_seq_ops); + if (res == 0) { + s = file->private_data; + s->private = inode->i_private; + } + return res; +} + +static const struct file_operations fops_registers = { + .open = open_file_registers, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, + .owner = THIS_MODULE, +}; + + +/* debugfs: beacons */ + +static ssize_t read_file_beacon(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath5k_softc *sc = file->private_data; + struct ath5k_hw *ah = sc->ah; + char buf[500]; + unsigned int len = 0; + unsigned int v; + u64 tsf; + + v = ath5k_hw_reg_read(sc->ah, AR5K_BEACON); + len += snprintf(buf+len, sizeof(buf)-len, + "%-24s0x%08x\tintval: %d\tTIM: 0x%x\n", + "AR5K_BEACON", v, v & AR5K_BEACON_PERIOD, + (v & AR5K_BEACON_TIM) >> AR5K_BEACON_TIM_S); + + len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\n", + "AR5K_LAST_TSTP", ath5k_hw_reg_read(sc->ah, AR5K_LAST_TSTP)); + + len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\n\n", + "AR5K_BEACON_CNT", ath5k_hw_reg_read(sc->ah, AR5K_BEACON_CNT)); + + v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER0); + len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n", + "AR5K_TIMER0 (TBTT)", v, v); + + v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER1); + len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n", + "AR5K_TIMER1 (DMA)", v, v >> 3); + + v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER2); + len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n", + "AR5K_TIMER2 (SWBA)", v, v >> 3); + + v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER3); + len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n", + "AR5K_TIMER3 (ATIM)", v, v); + + tsf = ath5k_hw_get_tsf64(sc->ah); + len += snprintf(buf+len, sizeof(buf)-len, + "TSF\t\t0x%016llx\tTU: %08x\n", + (unsigned long long)tsf, TSF_TO_TU(tsf)); + + return simple_read_from_buffer(user_buf, count, ppos, buf, len); +} + +static ssize_t write_file_beacon(struct file *file, + const char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct ath5k_softc *sc = file->private_data; + struct ath5k_hw *ah = sc->ah; + char buf[20]; + + if (copy_from_user(buf, userbuf, min(count, sizeof(buf)))) + return -EFAULT; + + if (strncmp(buf, "disable", 7) == 0) { + AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE); + printk(KERN_INFO "debugfs disable beacons\n"); + } else if (strncmp(buf, "enable", 6) == 0) { + AR5K_REG_ENABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE); + printk(KERN_INFO "debugfs enable beacons\n"); + } + return count; +} + +static const struct file_operations fops_beacon = { + .read = read_file_beacon, + .write = write_file_beacon, + .open = ath5k_debugfs_open, + .owner = THIS_MODULE, +}; + + +/* debugfs: reset */ + +static ssize_t write_file_reset(struct file *file, + const char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct ath5k_softc *sc = file->private_data; + tasklet_schedule(&sc->restq); + return count; +} + +static const struct file_operations fops_reset = { + .write = write_file_reset, + .open = ath5k_debugfs_open, + .owner = THIS_MODULE, +}; + + +/* debugfs: debug level */ + +static const struct { + enum ath5k_debug_level level; + const char *name; + const char *desc; +} dbg_info[] = { + { ATH5K_DEBUG_RESET, "reset", "reset and initialization" }, + { ATH5K_DEBUG_INTR, "intr", "interrupt handling" }, + { ATH5K_DEBUG_MODE, "mode", "mode init/setup" }, + { ATH5K_DEBUG_XMIT, "xmit", "basic xmit operation" }, + { ATH5K_DEBUG_BEACON, "beacon", "beacon handling" }, + { ATH5K_DEBUG_CALIBRATE, "calib", "periodic calibration" }, + { ATH5K_DEBUG_TXPOWER, "txpower", "transmit power setting" }, + { ATH5K_DEBUG_LED, "led", "LED management" }, + { ATH5K_DEBUG_DUMP_RX, "dumprx", "print received skb content" }, + { ATH5K_DEBUG_DUMP_TX, "dumptx", "print transmit skb content" }, + { ATH5K_DEBUG_DUMPBANDS, "dumpbands", "dump bands" }, + { ATH5K_DEBUG_TRACE, "trace", "trace function calls" }, + { ATH5K_DEBUG_ANY, "all", "show all debug levels" }, +}; + +static ssize_t read_file_debug(struct file *file, char __user *user_buf, + size_t count, loff_t *ppos) +{ + struct ath5k_softc *sc = file->private_data; + char buf[700]; + unsigned int len = 0; + unsigned int i; + + len += snprintf(buf+len, sizeof(buf)-len, + "DEBUG LEVEL: 0x%08x\n\n", sc->debug.level); + + for (i = 0; i < ARRAY_SIZE(dbg_info) - 1; i++) { + len += snprintf(buf+len, sizeof(buf)-len, + "%10s %c 0x%08x - %s\n", dbg_info[i].name, + sc->debug.level & dbg_info[i].level ? '+' : ' ', + dbg_info[i].level, dbg_info[i].desc); + } + len += snprintf(buf+len, sizeof(buf)-len, + "%10s %c 0x%08x - %s\n", dbg_info[i].name, + sc->debug.level == dbg_info[i].level ? '+' : ' ', + dbg_info[i].level, dbg_info[i].desc); + + return simple_read_from_buffer(user_buf, count, ppos, buf, len); +} + +static ssize_t write_file_debug(struct file *file, + const char __user *userbuf, + size_t count, loff_t *ppos) +{ + struct ath5k_softc *sc = file->private_data; + unsigned int i; + char buf[20]; + + if (copy_from_user(buf, userbuf, min(count, sizeof(buf)))) + return -EFAULT; + + for (i = 0; i < ARRAY_SIZE(dbg_info); i++) { + if (strncmp(buf, dbg_info[i].name, + strlen(dbg_info[i].name)) == 0) { + sc->debug.level ^= dbg_info[i].level; /* toggle bit */ + break; + } + } + return count; +} + +static const struct file_operations fops_debug = { + .read = read_file_debug, + .write = write_file_debug, + .open = ath5k_debugfs_open, + .owner = THIS_MODULE, +}; + + +/* init */ + +void +ath5k_debug_init(void) +{ + ath5k_global_debugfs = debugfs_create_dir("ath5k", NULL); +} + +void +ath5k_debug_init_device(struct ath5k_softc *sc) +{ + sc->debug.level = ath5k_debug; + + sc->debug.debugfs_phydir = debugfs_create_dir(wiphy_name(sc->hw->wiphy), + ath5k_global_debugfs); + + sc->debug.debugfs_debug = debugfs_create_file("debug", S_IWUSR | S_IRUGO, + sc->debug.debugfs_phydir, sc, &fops_debug); + + sc->debug.debugfs_registers = debugfs_create_file("registers", S_IRUGO, + sc->debug.debugfs_phydir, sc, &fops_registers); + + sc->debug.debugfs_beacon = debugfs_create_file("beacon", S_IWUSR | S_IRUGO, + sc->debug.debugfs_phydir, sc, &fops_beacon); + + sc->debug.debugfs_reset = debugfs_create_file("reset", S_IWUSR, + sc->debug.debugfs_phydir, sc, &fops_reset); +} + +void +ath5k_debug_finish(void) +{ + debugfs_remove(ath5k_global_debugfs); +} + +void +ath5k_debug_finish_device(struct ath5k_softc *sc) +{ + debugfs_remove(sc->debug.debugfs_debug); + debugfs_remove(sc->debug.debugfs_registers); + debugfs_remove(sc->debug.debugfs_beacon); + debugfs_remove(sc->debug.debugfs_reset); + debugfs_remove(sc->debug.debugfs_phydir); +} + + +/* functions used in other places */ + +void +ath5k_debug_dump_bands(struct ath5k_softc *sc) +{ + unsigned int b, i; + + if (likely(!(sc->debug.level & ATH5K_DEBUG_DUMPBANDS))) + return; + + BUG_ON(!sc->sbands); + + for (b = 0; b < IEEE80211_NUM_BANDS; b++) { + struct ieee80211_supported_band *band = &sc->sbands[b]; + char bname[5]; + switch (band->band) { + case IEEE80211_BAND_2GHZ: + strcpy(bname, "2 GHz"); + break; + case IEEE80211_BAND_5GHZ: + strcpy(bname, "5 GHz"); + break; + default: + printk(KERN_DEBUG "Band not supported: %d\n", + band->band); + return; + } + printk(KERN_DEBUG "Band %s: channels %d, rates %d\n", bname, + band->n_channels, band->n_bitrates); + printk(KERN_DEBUG " channels:\n"); + for (i = 0; i < band->n_channels; i++) + printk(KERN_DEBUG " %3d %d %.4x %.4x\n", + ieee80211_frequency_to_channel( + band->channels[i].center_freq), + band->channels[i].center_freq, + band->channels[i].hw_value, + band->channels[i].flags); + printk(KERN_DEBUG " rates:\n"); + for (i = 0; i < band->n_bitrates; i++) + printk(KERN_DEBUG " %4d %.4x %.4x %.4x\n", + band->bitrates[i].bitrate, + band->bitrates[i].hw_value, + band->bitrates[i].flags, + band->bitrates[i].hw_value_short); + } +} + +static inline void +ath5k_debug_printrxbuf(struct ath5k_buf *bf, int done, + struct ath5k_rx_status *rs) +{ + struct ath5k_desc *ds = bf->desc; + struct ath5k_hw_all_rx_desc *rd = &ds->ud.ds_rx; + + printk(KERN_DEBUG "R (%p %llx) %08x %08x %08x %08x %08x %08x %c\n", + ds, (unsigned long long)bf->daddr, + ds->ds_link, ds->ds_data, + rd->rx_ctl.rx_control_0, rd->rx_ctl.rx_control_1, + rd->u.rx_stat.rx_status_0, rd->u.rx_stat.rx_status_0, + !done ? ' ' : (rs->rs_status == 0) ? '*' : '!'); +} + +void +ath5k_debug_printrxbuffs(struct ath5k_softc *sc, struct ath5k_hw *ah) +{ + struct ath5k_desc *ds; + struct ath5k_buf *bf; + struct ath5k_rx_status rs = {}; + int status; + + if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET))) + return; + + printk(KERN_DEBUG "rx queue %x, link %p\n", + ath5k_hw_get_rxdp(ah), sc->rxlink); + + spin_lock_bh(&sc->rxbuflock); + list_for_each_entry(bf, &sc->rxbuf, list) { + ds = bf->desc; + status = ah->ah_proc_rx_desc(ah, ds, &rs); + if (!status) + ath5k_debug_printrxbuf(bf, status == 0, &rs); + } + spin_unlock_bh(&sc->rxbuflock); +} + +void +ath5k_debug_dump_skb(struct ath5k_softc *sc, + struct sk_buff *skb, const char *prefix, int tx) +{ + char buf[16]; + + if (likely(!((tx && (sc->debug.level & ATH5K_DEBUG_DUMP_TX)) || + (!tx && (sc->debug.level & ATH5K_DEBUG_DUMP_RX))))) + return; + + snprintf(buf, sizeof(buf), "%s %s", wiphy_name(sc->hw->wiphy), prefix); + + print_hex_dump_bytes(buf, DUMP_PREFIX_NONE, skb->data, + min(200U, skb->len)); + + printk(KERN_DEBUG "\n"); +} + +void +ath5k_debug_printtxbuf(struct ath5k_softc *sc, struct ath5k_buf *bf) +{ + struct ath5k_desc *ds = bf->desc; + struct ath5k_hw_5212_tx_desc *td = &ds->ud.ds_tx5212; + struct ath5k_tx_status ts = {}; + int done; + + if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET))) + return; + + done = sc->ah->ah_proc_tx_desc(sc->ah, bf->desc, &ts); + + printk(KERN_DEBUG "T (%p %llx) %08x %08x %08x %08x %08x %08x %08x " + "%08x %c\n", ds, (unsigned long long)bf->daddr, ds->ds_link, + ds->ds_data, td->tx_ctl.tx_control_0, td->tx_ctl.tx_control_1, + td->tx_ctl.tx_control_2, td->tx_ctl.tx_control_3, + td->tx_stat.tx_status_0, td->tx_stat.tx_status_1, + done ? ' ' : (ts.ts_status == 0) ? '*' : '!'); +} + +#endif /* ifdef CONFIG_ATH5K_DEBUG */ |