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Diffstat (limited to 'drivers/net/wireless/ath5k/debug.c')
-rw-r--r--drivers/net/wireless/ath5k/debug.c469
1 files changed, 469 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath5k/debug.c b/drivers/net/wireless/ath5k/debug.c
new file mode 100644
index 000000000000..4ba649e20269
--- /dev/null
+++ b/drivers/net/wireless/ath5k/debug.c
@@ -0,0 +1,469 @@
+/*
+ * Copyright (c) 2007 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 "debug.h"
+#include "base.h"
+
+static unsigned int ath5k_debug;
+module_param_named(debug, ath5k_debug, uint, 0);
+
+
+#if 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 {
+ char *name;
+ int addr;
+};
+
+#define REG_STRUCT_INIT(r) { #r, r }
+
+/* just a few random registers, might want to add more */
+static 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_CPCORN),
+ 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) ? &regs[*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) ? &regs[*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 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, &register_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: TSF */
+
+static ssize_t read_file_tsf(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct ath5k_softc *sc = file->private_data;
+ char buf[100];
+ snprintf(buf, 100, "0x%016llx\n", ath5k_hw_get_tsf64(sc->ah));
+ return simple_read_from_buffer(user_buf, count, ppos, buf, 19);
+}
+
+static ssize_t write_file_tsf(struct file *file,
+ const char __user *userbuf,
+ size_t count, loff_t *ppos)
+{
+ struct ath5k_softc *sc = file->private_data;
+ if (strncmp(userbuf, "reset", 5) == 0) {
+ ath5k_hw_reset_tsf(sc->ah);
+ printk(KERN_INFO "debugfs reset TSF\n");
+ }
+ return count;
+}
+
+static const struct file_operations fops_tsf = {
+ .read = read_file_tsf,
+ .write = write_file_tsf,
+ .open = ath5k_debugfs_open,
+ .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[1000];
+ 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", 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;
+
+ if (strncmp(userbuf, "disable", 7) == 0) {
+ AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
+ printk(KERN_INFO "debugfs disable beacons\n");
+ } else if (strncmp(userbuf, "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,
+};
+
+
+/* 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_u32("debug",
+ 0666, sc->debug.debugfs_phydir, &sc->debug.level);
+
+ sc->debug.debugfs_registers = debugfs_create_file("registers", 0444,
+ sc->debug.debugfs_phydir,
+ sc, &fops_registers);
+
+ sc->debug.debugfs_tsf = debugfs_create_file("tsf", 0666,
+ sc->debug.debugfs_phydir,
+ sc, &fops_tsf);
+
+ sc->debug.debugfs_beacon = debugfs_create_file("beacon", 0666,
+ sc->debug.debugfs_phydir,
+ sc, &fops_beacon);
+
+ sc->debug.debugfs_reset = debugfs_create_file("reset", 0222,
+ 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_tsf);
+ 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_modes(struct ath5k_softc *sc, struct ieee80211_hw_mode *modes)
+{
+ unsigned int m, i;
+
+ if (likely(!(sc->debug.level & ATH5K_DEBUG_DUMPMODES)))
+ return;
+
+ for (m = 0; m < NUM_DRIVER_MODES; m++) {
+ printk(KERN_DEBUG "Mode %u: channels %d, rates %d\n", m,
+ modes[m].num_channels, modes[m].num_rates);
+ printk(KERN_DEBUG " channels:\n");
+ for (i = 0; i < modes[m].num_channels; i++)
+ printk(KERN_DEBUG " %3d %d %.4x %.4x\n",
+ modes[m].channels[i].chan,
+ modes[m].channels[i].freq,
+ modes[m].channels[i].val,
+ modes[m].channels[i].flag);
+ printk(KERN_DEBUG " rates:\n");
+ for (i = 0; i < modes[m].num_rates; i++)
+ printk(KERN_DEBUG " %4d %.4x %.4x %.4x\n",
+ modes[m].rates[i].rate,
+ modes[m].rates[i].val,
+ modes[m].rates[i].flags,
+ modes[m].rates[i].val2);
+ }
+}
+
+static inline void
+ath5k_debug_printrxbuf(struct ath5k_buf *bf, int done)
+{
+ struct ath5k_desc *ds = bf->desc;
+
+ 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, ds->ds_ctl0, ds->ds_ctl1,
+ ds->ds_hw[0], ds->ds_hw[1],
+ !done ? ' ' : (ds->ds_rxstat.rs_status == 0) ? '*' : '!');
+}
+
+void
+ath5k_debug_printrxbuffs(struct ath5k_softc *sc, struct ath5k_hw *ah)
+{
+ struct ath5k_desc *ds;
+ struct ath5k_buf *bf;
+ int status;
+
+ if (likely(!(sc->debug.level &
+ (ATH5K_DEBUG_RESET | ATH5K_DEBUG_FATAL))))
+ return;
+
+ printk(KERN_DEBUG "rx queue %x, link %p\n",
+ ath5k_hw_get_rx_buf(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);
+ if (!status || (sc->debug.level & ATH5K_DEBUG_FATAL))
+ ath5k_debug_printrxbuf(bf, status == 0);
+ }
+ 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, int done)
+{
+ struct ath5k_desc *ds = bf->desc;
+
+ if (likely(!(sc->debug.level & ATH5K_DEBUG_RESET)))
+ return;
+
+ 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, ds->ds_ctl0, ds->ds_ctl1,
+ ds->ds_hw[0], ds->ds_hw[1], ds->ds_hw[2], ds->ds_hw[3],
+ !done ? ' ' : (ds->ds_txstat.ts_status == 0) ? '*' : '!');
+}
+
+#endif /* if ATH5K_DEBUG */