552 lines
16 KiB
C
552 lines
16 KiB
C
/*
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* Copyright (c) 2007-2008 Bruno Randolf <bruno@thinktube.com>
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*
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* This file is free software: you may copy, redistribute and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation, either version 2 of the License, or (at your
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* option) any later version.
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*
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* This file is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*
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* This file incorporates work covered by the following copyright and
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* permission notice:
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*
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* Copyright (c) 2002-2005 Sam Leffler, Errno Consulting
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* Copyright (c) 2004-2005 Atheros Communications, Inc.
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* Copyright (c) 2006 Devicescape Software, Inc.
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* Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com>
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* Copyright (c) 2007 Luis R. Rodriguez <mcgrof@winlab.rutgers.edu>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
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* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "debug.h"
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#include "base.h"
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static unsigned int ath5k_debug;
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module_param_named(debug, ath5k_debug, uint, 0);
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#if ATH5K_DEBUG
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#include <linux/seq_file.h>
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#include "reg.h"
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static struct dentry *ath5k_global_debugfs;
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static int ath5k_debugfs_open(struct inode *inode, struct file *file)
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{
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file->private_data = inode->i_private;
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return 0;
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}
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/* debugfs: registers */
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struct reg {
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char *name;
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int addr;
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};
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#define REG_STRUCT_INIT(r) { #r, r }
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/* just a few random registers, might want to add more */
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static struct reg regs[] = {
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REG_STRUCT_INIT(AR5K_CR),
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REG_STRUCT_INIT(AR5K_RXDP),
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REG_STRUCT_INIT(AR5K_CFG),
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REG_STRUCT_INIT(AR5K_IER),
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REG_STRUCT_INIT(AR5K_BCR),
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REG_STRUCT_INIT(AR5K_RTSD0),
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REG_STRUCT_INIT(AR5K_RTSD1),
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REG_STRUCT_INIT(AR5K_TXCFG),
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REG_STRUCT_INIT(AR5K_RXCFG),
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REG_STRUCT_INIT(AR5K_RXJLA),
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REG_STRUCT_INIT(AR5K_MIBC),
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REG_STRUCT_INIT(AR5K_TOPS),
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REG_STRUCT_INIT(AR5K_RXNOFRM),
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REG_STRUCT_INIT(AR5K_TXNOFRM),
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REG_STRUCT_INIT(AR5K_RPGTO),
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REG_STRUCT_INIT(AR5K_RFCNT),
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REG_STRUCT_INIT(AR5K_MISC),
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REG_STRUCT_INIT(AR5K_QCUDCU_CLKGT),
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REG_STRUCT_INIT(AR5K_ISR),
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REG_STRUCT_INIT(AR5K_PISR),
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REG_STRUCT_INIT(AR5K_SISR0),
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REG_STRUCT_INIT(AR5K_SISR1),
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REG_STRUCT_INIT(AR5K_SISR2),
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REG_STRUCT_INIT(AR5K_SISR3),
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REG_STRUCT_INIT(AR5K_SISR4),
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REG_STRUCT_INIT(AR5K_IMR),
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REG_STRUCT_INIT(AR5K_PIMR),
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REG_STRUCT_INIT(AR5K_SIMR0),
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REG_STRUCT_INIT(AR5K_SIMR1),
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REG_STRUCT_INIT(AR5K_SIMR2),
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REG_STRUCT_INIT(AR5K_SIMR3),
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REG_STRUCT_INIT(AR5K_SIMR4),
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REG_STRUCT_INIT(AR5K_DCM_ADDR),
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REG_STRUCT_INIT(AR5K_DCCFG),
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REG_STRUCT_INIT(AR5K_CCFG),
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REG_STRUCT_INIT(AR5K_CPC0),
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REG_STRUCT_INIT(AR5K_CPC1),
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REG_STRUCT_INIT(AR5K_CPC2),
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REG_STRUCT_INIT(AR5K_CPC3),
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REG_STRUCT_INIT(AR5K_CPCORN),
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REG_STRUCT_INIT(AR5K_RESET_CTL),
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REG_STRUCT_INIT(AR5K_SLEEP_CTL),
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REG_STRUCT_INIT(AR5K_INTPEND),
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REG_STRUCT_INIT(AR5K_SFR),
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REG_STRUCT_INIT(AR5K_PCICFG),
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REG_STRUCT_INIT(AR5K_GPIOCR),
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REG_STRUCT_INIT(AR5K_GPIODO),
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REG_STRUCT_INIT(AR5K_SREV),
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};
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static void *reg_start(struct seq_file *seq, loff_t *pos)
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{
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return *pos < ARRAY_SIZE(regs) ? ®s[*pos] : NULL;
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}
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static void reg_stop(struct seq_file *seq, void *p)
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{
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/* nothing to do */
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}
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static void *reg_next(struct seq_file *seq, void *p, loff_t *pos)
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{
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++*pos;
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return *pos < ARRAY_SIZE(regs) ? ®s[*pos] : NULL;
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}
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static int reg_show(struct seq_file *seq, void *p)
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{
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struct ath5k_softc *sc = seq->private;
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struct reg *r = p;
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seq_printf(seq, "%-25s0x%08x\n", r->name,
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ath5k_hw_reg_read(sc->ah, r->addr));
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return 0;
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}
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static struct seq_operations register_seq_ops = {
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.start = reg_start,
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.next = reg_next,
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.stop = reg_stop,
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.show = reg_show
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};
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static int open_file_registers(struct inode *inode, struct file *file)
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{
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struct seq_file *s;
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int res;
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res = seq_open(file, ®ister_seq_ops);
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if (res == 0) {
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s = file->private_data;
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s->private = inode->i_private;
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}
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return res;
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}
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static const struct file_operations fops_registers = {
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.open = open_file_registers,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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.owner = THIS_MODULE,
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};
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/* debugfs: TSF */
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static ssize_t read_file_tsf(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ath5k_softc *sc = file->private_data;
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char buf[100];
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snprintf(buf, sizeof(buf), "0x%016llx\n", ath5k_hw_get_tsf64(sc->ah));
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return simple_read_from_buffer(user_buf, count, ppos, buf, 19);
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}
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static ssize_t write_file_tsf(struct file *file,
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const char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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struct ath5k_softc *sc = file->private_data;
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char buf[20];
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if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
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return -EFAULT;
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if (strncmp(buf, "reset", 5) == 0) {
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ath5k_hw_reset_tsf(sc->ah);
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printk(KERN_INFO "debugfs reset TSF\n");
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}
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return count;
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}
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static const struct file_operations fops_tsf = {
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.read = read_file_tsf,
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.write = write_file_tsf,
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.open = ath5k_debugfs_open,
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.owner = THIS_MODULE,
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};
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/* debugfs: beacons */
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static ssize_t read_file_beacon(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ath5k_softc *sc = file->private_data;
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struct ath5k_hw *ah = sc->ah;
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char buf[500];
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unsigned int len = 0;
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unsigned int v;
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u64 tsf;
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v = ath5k_hw_reg_read(sc->ah, AR5K_BEACON);
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len += snprintf(buf+len, sizeof(buf)-len,
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"%-24s0x%08x\tintval: %d\tTIM: 0x%x\n",
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"AR5K_BEACON", v, v & AR5K_BEACON_PERIOD,
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(v & AR5K_BEACON_TIM) >> AR5K_BEACON_TIM_S);
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len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\n",
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"AR5K_LAST_TSTP", ath5k_hw_reg_read(sc->ah, AR5K_LAST_TSTP));
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len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\n\n",
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"AR5K_BEACON_CNT", ath5k_hw_reg_read(sc->ah, AR5K_BEACON_CNT));
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v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER0);
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len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
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"AR5K_TIMER0 (TBTT)", v, v);
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v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER1);
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len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
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"AR5K_TIMER1 (DMA)", v, v >> 3);
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v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER2);
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len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
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"AR5K_TIMER2 (SWBA)", v, v >> 3);
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v = ath5k_hw_reg_read(sc->ah, AR5K_TIMER3);
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len += snprintf(buf+len, sizeof(buf)-len, "%-24s0x%08x\tTU: %08x\n",
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"AR5K_TIMER3 (ATIM)", v, v);
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tsf = ath5k_hw_get_tsf64(sc->ah);
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len += snprintf(buf+len, sizeof(buf)-len,
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"TSF\t\t0x%016llx\tTU: %08x\n", tsf, TSF_TO_TU(tsf));
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return simple_read_from_buffer(user_buf, count, ppos, buf, len);
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}
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static ssize_t write_file_beacon(struct file *file,
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const char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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struct ath5k_softc *sc = file->private_data;
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struct ath5k_hw *ah = sc->ah;
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char buf[20];
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if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
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return -EFAULT;
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if (strncmp(buf, "disable", 7) == 0) {
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AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
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printk(KERN_INFO "debugfs disable beacons\n");
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} else if (strncmp(buf, "enable", 6) == 0) {
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AR5K_REG_ENABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
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printk(KERN_INFO "debugfs enable beacons\n");
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}
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return count;
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}
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static const struct file_operations fops_beacon = {
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.read = read_file_beacon,
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.write = write_file_beacon,
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.open = ath5k_debugfs_open,
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.owner = THIS_MODULE,
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};
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/* debugfs: reset */
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static ssize_t write_file_reset(struct file *file,
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const char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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struct ath5k_softc *sc = file->private_data;
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tasklet_schedule(&sc->restq);
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return count;
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}
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static const struct file_operations fops_reset = {
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.write = write_file_reset,
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.open = ath5k_debugfs_open,
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.owner = THIS_MODULE,
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};
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/* debugfs: debug level */
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static struct {
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enum ath5k_debug_level level;
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const char *name;
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const char *desc;
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} dbg_info[] = {
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{ ATH5K_DEBUG_RESET, "reset", "reset and initialization" },
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{ ATH5K_DEBUG_INTR, "intr", "interrupt handling" },
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{ ATH5K_DEBUG_MODE, "mode", "mode init/setup" },
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{ ATH5K_DEBUG_XMIT, "xmit", "basic xmit operation" },
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{ ATH5K_DEBUG_BEACON, "beacon", "beacon handling" },
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{ ATH5K_DEBUG_CALIBRATE, "calib", "periodic calibration" },
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{ ATH5K_DEBUG_TXPOWER, "txpower", "transmit power setting" },
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{ ATH5K_DEBUG_LED, "led", "LED mamagement" },
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{ ATH5K_DEBUG_DUMP_RX, "dumprx", "print received skb content" },
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{ ATH5K_DEBUG_DUMP_TX, "dumptx", "print transmit skb content" },
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{ ATH5K_DEBUG_DUMPMODES, "dumpmodes", "dump modes" },
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{ ATH5K_DEBUG_TRACE, "trace", "trace function calls" },
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{ ATH5K_DEBUG_ANY, "all", "show all debug levels" },
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};
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static ssize_t read_file_debug(struct file *file, char __user *user_buf,
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size_t count, loff_t *ppos)
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{
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struct ath5k_softc *sc = file->private_data;
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char buf[700];
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unsigned int len = 0;
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unsigned int i;
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len += snprintf(buf+len, sizeof(buf)-len,
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"DEBUG LEVEL: 0x%08x\n\n", sc->debug.level);
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for (i = 0; i < ARRAY_SIZE(dbg_info) - 1; i++) {
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len += snprintf(buf+len, sizeof(buf)-len,
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"%10s %c 0x%08x - %s\n", dbg_info[i].name,
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sc->debug.level & dbg_info[i].level ? '+' : ' ',
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dbg_info[i].level, dbg_info[i].desc);
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}
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len += snprintf(buf+len, sizeof(buf)-len,
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"%10s %c 0x%08x - %s\n", dbg_info[i].name,
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sc->debug.level == dbg_info[i].level ? '+' : ' ',
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dbg_info[i].level, dbg_info[i].desc);
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return simple_read_from_buffer(user_buf, count, ppos, buf, len);
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}
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static ssize_t write_file_debug(struct file *file,
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const char __user *userbuf,
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size_t count, loff_t *ppos)
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{
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struct ath5k_softc *sc = file->private_data;
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unsigned int i;
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char buf[20];
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if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
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return -EFAULT;
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for (i = 0; i < ARRAY_SIZE(dbg_info); i++) {
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if (strncmp(buf, dbg_info[i].name,
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strlen(dbg_info[i].name)) == 0) {
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sc->debug.level ^= dbg_info[i].level; /* toggle bit */
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break;
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}
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}
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return count;
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}
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static const struct file_operations fops_debug = {
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.read = read_file_debug,
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.write = write_file_debug,
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.open = ath5k_debugfs_open,
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.owner = THIS_MODULE,
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};
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/* init */
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void
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ath5k_debug_init(void)
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{
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ath5k_global_debugfs = debugfs_create_dir("ath5k", NULL);
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}
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void
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ath5k_debug_init_device(struct ath5k_softc *sc)
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{
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sc->debug.level = ath5k_debug;
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sc->debug.debugfs_phydir = debugfs_create_dir(wiphy_name(sc->hw->wiphy),
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ath5k_global_debugfs);
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sc->debug.debugfs_debug = debugfs_create_file("debug", 0666,
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sc->debug.debugfs_phydir, sc, &fops_debug);
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sc->debug.debugfs_registers = debugfs_create_file("registers", 0444,
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sc->debug.debugfs_phydir, sc, &fops_registers);
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sc->debug.debugfs_tsf = debugfs_create_file("tsf", 0666,
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sc->debug.debugfs_phydir, sc, &fops_tsf);
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sc->debug.debugfs_beacon = debugfs_create_file("beacon", 0666,
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sc->debug.debugfs_phydir, sc, &fops_beacon);
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sc->debug.debugfs_reset = debugfs_create_file("reset", 0222,
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sc->debug.debugfs_phydir, sc, &fops_reset);
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}
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void
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ath5k_debug_finish(void)
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{
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debugfs_remove(ath5k_global_debugfs);
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}
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void
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ath5k_debug_finish_device(struct ath5k_softc *sc)
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{
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debugfs_remove(sc->debug.debugfs_debug);
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debugfs_remove(sc->debug.debugfs_registers);
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debugfs_remove(sc->debug.debugfs_tsf);
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debugfs_remove(sc->debug.debugfs_beacon);
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debugfs_remove(sc->debug.debugfs_reset);
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debugfs_remove(sc->debug.debugfs_phydir);
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}
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/* functions used in other places */
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void
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ath5k_debug_dump_modes(struct ath5k_softc *sc, struct ieee80211_hw_mode *modes)
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{
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|
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)))
|
|
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)
|
|
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 */
|