mirror of
https://github.com/proski/madwifi
synced 2024-11-29 17:53:12 +03:00
120d309bc3
Linux 2.6.24 introduces a sysctl checker that disallows using arbitrary ctl_name values for sysctl entries. The entries with non-standard values should set ctl_name to CTL_UNNUMBERED. On the other hand, using consistent non-zero ctl_name values is required for older kernels (tested on Linux 2.4.33.3 from Slackware 11). Thus the solution is to use CTL_UNNUMBERED on Linux 2.6.24+ and the original values in the older kernels. Move CTL_AUTO and DEV_ATH to include/compat.h and define them correspondingly. When copying sysctl entries, check procname for being non-zero, since ctl_name is zero (CTL_UNNUMBERED) on Linux 2.6.24 and newer. For the same reason, don't use ctl_name to distinguish entries in ath_sysctl_template, use extra2 instead. git-svn-id: http://madwifi-project.org/svn/madwifi/trunk@2814 0192ed92-7a03-0410-a25b-9323aeb14dbd
602 lines
14 KiB
C
602 lines
14 KiB
C
/*-
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* Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
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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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* $Id$
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*/
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#include "opt_ah.h"
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#ifndef EXPORT_SYMTAB
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#define EXPORT_SYMTAB
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#endif
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/* Don't use virtualized timer in Linux 2.6.20+ */
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#define USE_REAL_TIME_DELAY
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#ifndef AUTOCONF_INCLUDED
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#include <linux/config.h>
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#endif
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#include <linux/version.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/sched.h>
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#include <linux/sysctl.h>
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#include <linux/proc_fs.h>
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#include <asm/io.h>
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#include <ah.h>
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#include <ah_os.h>
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#ifdef AH_DEBUG
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static int ath_hal_debug = 0;
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#endif
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int ath_hal_dma_beacon_response_time = 2; /* in TUs */
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int ath_hal_sw_beacon_response_time = 10; /* in TUs */
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int ath_hal_additional_swba_backoff = 0; /* in TUs */
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struct ath_hal *
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_ath_hal_attach(u_int16_t devid, HAL_SOFTC sc,
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HAL_BUS_TAG t, HAL_BUS_HANDLE h, HAL_STATUS *s)
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{
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struct ath_hal *ah = ath_hal_attach(devid, sc, t, h, s);
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if (ah)
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#ifndef __MOD_INC_USE_COUNT
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if (!try_module_get(THIS_MODULE)) {
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printk(KERN_WARNING "%s: try_module_get failed\n",
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__func__);
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_ath_hal_detach(ah);
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return NULL;
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}
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#else
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MOD_INC_USE_COUNT;
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#endif
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return ah;
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}
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void
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_ath_hal_detach(struct ath_hal *ah)
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{
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(*ah->ah_detach)(ah);
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#ifndef __MOD_INC_USE_COUNT
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module_put(THIS_MODULE);
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#else
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MOD_DEC_USE_COUNT;
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#endif
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}
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/*
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* Print/log message support.
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*/
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void __ahdecl
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ath_hal_vprintf(struct ath_hal *ah, const char* fmt, va_list ap)
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{
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char buf[1024]; /* XXX */
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vsnprintf(buf, sizeof(buf), fmt, ap);
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printk("%s", buf);
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}
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void __ahdecl
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ath_hal_printf(struct ath_hal *ah, const char* fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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ath_hal_vprintf(ah, fmt, ap);
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va_end(ap);
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}
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EXPORT_SYMBOL(ath_hal_printf);
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/*
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* Format an Ethernet MAC for printing.
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*/
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const char* __ahdecl
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ath_hal_ether_sprintf(const u_int8_t *mac)
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{
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static char etherbuf[18];
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snprintf(etherbuf, sizeof(etherbuf), "%02x:%02x:%02x:%02x:%02x:%02x",
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mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
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return etherbuf;
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}
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#ifdef AH_ASSERT
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void __ahdecl
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ath_hal_assert_failed(const char* filename, int lineno, const char *msg)
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{
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printk("Atheros HAL assertion failure: %s: line %u: %s\n",
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filename, lineno, msg);
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panic("ath_hal_assert");
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}
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#endif /* AH_ASSERT */
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#ifdef AH_DEBUG_ALQ
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/*
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* ALQ register tracing support.
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*
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* Setting hw.ath.hal.alq=1 enables tracing of all register reads and
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* writes to the file /tmp/ath_hal.log. The file format is a simple
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* fixed-size array of records. When done logging set hw.ath.hal.alq=0
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* and then decode the file with the ardecode program (that is part of the
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* HAL). If you start+stop tracing the data will be appended to an
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* existing file.
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*
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* NB: doesn't handle multiple devices properly; only one DEVICE record
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* is emitted and the different devices are not identified.
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*/
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#include "alq/alq.h"
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#include "ah_decode.h"
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static struct alq *ath_hal_alq;
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static int ath_hal_alq_emitdev; /* need to emit DEVICE record */
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static u_int ath_hal_alq_lost; /* count of lost records */
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static const char *ath_hal_logfile = "/tmp/ath_hal.log";
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static u_int ath_hal_alq_qsize = 8*1024;
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static int
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ath_hal_setlogging(int enable)
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{
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int error;
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if (enable) {
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if (!capable(CAP_NET_ADMIN))
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return -EPERM;
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error = alq_open(&ath_hal_alq, ath_hal_logfile,
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sizeof (struct athregrec), ath_hal_alq_qsize);
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ath_hal_alq_lost = 0;
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ath_hal_alq_emitdev = 1;
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printk("ath_hal: logging to %s %s\n", ath_hal_logfile,
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error == 0 ? "enabled" : "could not be setup");
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} else {
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if (ath_hal_alq)
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alq_close(ath_hal_alq);
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ath_hal_alq = NULL;
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printk("ath_hal: logging disabled\n");
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error = 0;
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}
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return error;
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}
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/*
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* Deal with the sysctl handler api changing.
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*/
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,8)
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#define AH_SYSCTL_ARGS_DECL \
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ctl_table *ctl, int write, struct file *filp, void *buffer, \
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size_t *lenp
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#define AH_SYSCTL_ARGS ctl, write, filp, buffer, lenp
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#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,8) */
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#define AH_SYSCTL_ARGS_DECL \
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ctl_table *ctl, int write, struct file *filp, void *buffer,\
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size_t *lenp, loff_t *ppos
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#define AH_SYSCTL_ARGS ctl, write, filp, buffer, lenp, ppos
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#endif
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static int
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sysctl_hw_ath_hal_log(AH_SYSCTL_ARGS_DECL)
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{
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int error, enable;
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ctl->data = &enable;
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ctl->maxlen = sizeof(enable);
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enable = (ath_hal_alq != NULL);
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error = proc_dointvec(AH_SYSCTL_ARGS);
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if (error || !write)
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return error;
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else
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return ath_hal_setlogging(enable);
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}
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/*
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This should only be called while holding the lock, sc->sc_hal_lock.
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*/
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static struct ale *
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ath_hal_alq_get(struct ath_hal *ah)
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{
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struct ale *ale;
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if (ath_hal_alq_emitdev) {
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ale = alq_get(ath_hal_alq, ALQ_NOWAIT);
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if (ale) {
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struct athregrec *r =
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(struct athregrec *) ale->ae_data;
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r->op = OP_DEVICE;
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r->reg = 0;
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r->val = ah->ah_devid;
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alq_post(ath_hal_alq, ale);
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ath_hal_alq_emitdev = 0;
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} else
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ath_hal_alq_lost++;
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}
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ale = alq_get(ath_hal_alq, ALQ_NOWAIT);
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if (!ale)
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ath_hal_alq_lost++;
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return ale;
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}
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/*
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This should only be called while holding the lock, sc->sc_hal_lock.
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*/
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void __ahdecl
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ath_hal_reg_write(struct ath_hal *ah, u_int32_t reg, u_int32_t val)
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{
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if (ath_hal_alq) {
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unsigned long flags;
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struct ale *ale;
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local_irq_save(flags);
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ale = ath_hal_alq_get(ah);
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if (ale) {
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struct athregrec *r = (struct athregrec *) ale->ae_data;
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r->op = OP_WRITE;
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r->reg = reg;
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r->val = val;
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alq_post(ath_hal_alq, ale);
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}
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local_irq_restore(flags);
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}
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_OS_REG_WRITE(ah, reg, val);
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}
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EXPORT_SYMBOL(ath_hal_reg_write);
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/*
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This should only be called while holding the lock, sc->sc_hal_lock.
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*/
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u_int32_t __ahdecl
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ath_hal_reg_read(struct ath_hal *ah, u_int32_t reg)
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{
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u_int32_t val;
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val = _OS_REG_READ(ah, reg);
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if (ath_hal_alq) {
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unsigned long flags;
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struct ale *ale;
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ale = ath_hal_alq_get(ah);
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if (ale) {
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struct athregrec *r = (struct athregrec *) ale->ae_data;
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r->op = OP_READ;
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r->reg = reg;
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r->val = val;
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alq_post(ath_hal_alq, ale);
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}
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}
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return val;
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}
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EXPORT_SYMBOL(ath_hal_reg_read);
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/*
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* This should only be called while holding the lock, sc->sc_hal_lock.
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*/
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void __ahdecl
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OS_MARK(struct ath_hal *ah, u_int id, u_int32_t v)
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{
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if (ath_hal_alq) {
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struct ale *ale;
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ale = ath_hal_alq_get(ah);
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if (ale) {
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struct athregrec *r = (struct athregrec *) ale->ae_data;
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r->op = OP_MARK;
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r->reg = id;
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r->val = v;
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alq_post(ath_hal_alq, ale);
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}
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}
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}
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EXPORT_SYMBOL(OS_MARK);
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#elif defined(AH_DEBUG) || defined(AH_REGOPS_FUNC)
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#ifdef AH_DEBUG
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/* Store the current function name (should be called by wrapper functions)
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* useful for debugging and figuring out, which hal function sets which
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* registers */
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char *ath_hal_func = NULL;
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#endif
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/*
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* Memory-mapped device register read/write. These are here
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* as routines when debugging support is enabled and/or when
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* explicitly configured to use function calls. The latter is
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* for architectures that might need to do something before
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* referencing memory (e.g. remap an i/o window).
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*
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* This should only be called while holding the lock, sc->sc_hal_lock.
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*
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* NB: see the comments in ah_osdep.h about byte-swapping register
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* reads and writes to understand what's going on below.
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*/
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void __ahdecl
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ath_hal_reg_write(struct ath_hal *ah, u_int reg, u_int32_t val)
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{
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#ifdef AH_DEBUG
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if (ath_hal_debug > 1)
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ath_hal_printf(ah, "%s: WRITE 0x%x <= 0x%x\n",
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(ath_hal_func ?: "unknown"), reg, val);
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#endif
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_OS_REG_WRITE(ah, reg, val);
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}
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EXPORT_SYMBOL(ath_hal_reg_write);
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/* This should only be called while holding the lock, sc->sc_hal_lock. */
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u_int32_t __ahdecl
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ath_hal_reg_read(struct ath_hal *ah, u_int reg)
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{
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u_int32_t val;
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val = _OS_REG_READ(ah, reg);
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#ifdef AH_DEBUG
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if (ath_hal_debug > 1)
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ath_hal_printf(ah, "%s: READ 0x%x => 0x%x\n",
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(ath_hal_func ?: "unknown"), reg, val);
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#endif
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return val;
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}
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EXPORT_SYMBOL(ath_hal_reg_read);
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#endif /* AH_DEBUG || AH_REGOPS_FUNC */
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#ifdef AH_DEBUG
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void __ahdecl
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HALDEBUG(struct ath_hal *ah, const char* fmt, ...)
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{
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if (ath_hal_debug) {
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__va_list ap;
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va_start(ap, fmt);
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ath_hal_vprintf(ah, fmt, ap);
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va_end(ap);
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}
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}
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void __ahdecl
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HALDEBUGn(struct ath_hal *ah, u_int level, const char* fmt, ...)
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{
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if (ath_hal_debug >= level) {
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__va_list ap;
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va_start(ap, fmt);
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ath_hal_vprintf(ah, fmt, ap);
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va_end(ap);
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}
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}
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#endif /* AH_DEBUG */
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/*
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* Delay n microseconds.
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*/
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void __ahdecl
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ath_hal_delay(int n)
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{
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udelay(n);
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}
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u_int32_t __ahdecl
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ath_hal_getuptime(struct ath_hal *ah)
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{
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return ((jiffies / HZ) * 1000) + (jiffies % HZ) * (1000 / HZ);
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}
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EXPORT_SYMBOL(ath_hal_getuptime);
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/*
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* Allocate/free memory.
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*/
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void * __ahdecl
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ath_hal_malloc(size_t size)
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{
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void *p;
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p = kmalloc(size, GFP_KERNEL);
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if (p)
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OS_MEMZERO(p, size);
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return p;
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}
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void __ahdecl
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ath_hal_free(void* p)
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{
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kfree(p);
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}
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void __ahdecl
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ath_hal_memzero(void *dst, size_t n)
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{
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memset(dst, 0, n);
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}
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EXPORT_SYMBOL(ath_hal_memzero);
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void * __ahdecl
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ath_hal_memcpy(void *dst, const void *src, size_t n)
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{
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return memcpy(dst, src, n);
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}
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EXPORT_SYMBOL(ath_hal_memcpy);
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int __ahdecl
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ath_hal_memcmp(const void *a, const void *b, size_t n)
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{
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return memcmp(a, b, n);
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}
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EXPORT_SYMBOL(ath_hal_memcmp);
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static ctl_table ath_hal_sysctls[] = {
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#ifdef AH_DEBUG
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{ .ctl_name = CTL_AUTO,
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.procname = "debug",
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.mode = 0644,
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.data = &ath_hal_debug,
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.maxlen = sizeof(ath_hal_debug),
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.proc_handler = proc_dointvec
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},
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#endif
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{ .ctl_name = CTL_AUTO,
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.procname = "dma_beacon_response_time",
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.data = &ath_hal_dma_beacon_response_time,
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.maxlen = sizeof(ath_hal_dma_beacon_response_time),
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.mode = 0644,
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.proc_handler = proc_dointvec
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},
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{ .ctl_name = CTL_AUTO,
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.procname = "sw_beacon_response_time",
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.mode = 0644,
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.data = &ath_hal_sw_beacon_response_time,
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.maxlen = sizeof(ath_hal_sw_beacon_response_time),
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.proc_handler = proc_dointvec
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},
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{ .ctl_name = CTL_AUTO,
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.procname = "swba_backoff",
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.mode = 0644,
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.data = &ath_hal_additional_swba_backoff,
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.maxlen = sizeof(ath_hal_additional_swba_backoff),
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.proc_handler = proc_dointvec
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},
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#ifdef AH_DEBUG_ALQ
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{ .ctl_name = CTL_AUTO,
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.procname = "alq",
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.mode = 0644,
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.proc_handler = sysctl_hw_ath_hal_log
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},
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{ .ctl_name = CTL_AUTO,
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.procname = "alq_size",
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.mode = 0644,
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.data = &ath_hal_alq_qsize,
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.maxlen = sizeof(ath_hal_alq_qsize),
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.proc_handler = proc_dointvec
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},
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{ .ctl_name = CTL_AUTO,
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.procname = "alq_lost",
|
|
.mode = 0644,
|
|
.data = &ath_hal_alq_lost,
|
|
.maxlen = sizeof(ath_hal_alq_lost),
|
|
.proc_handler = proc_dointvec
|
|
},
|
|
#endif
|
|
{ 0 }
|
|
};
|
|
static ctl_table ath_hal_table[] = {
|
|
{ .ctl_name = CTL_AUTO,
|
|
.procname = "hal",
|
|
.mode = 0555,
|
|
.child = ath_hal_sysctls
|
|
}, { 0 }
|
|
};
|
|
static ctl_table ath_ath_table[] = {
|
|
{ .ctl_name = DEV_ATH,
|
|
.procname = "ath",
|
|
.mode = 0555,
|
|
.child = ath_hal_table
|
|
}, { 0 }
|
|
};
|
|
static ctl_table ath_root_table[] = {
|
|
{ .ctl_name = CTL_DEV,
|
|
.procname = "dev",
|
|
.mode = 0555,
|
|
.child = ath_ath_table
|
|
}, { 0 }
|
|
};
|
|
static struct ctl_table_header *ath_hal_sysctl_header;
|
|
|
|
static void
|
|
ath_hal_sysctl_register(void)
|
|
{
|
|
static int initialized = 0;
|
|
|
|
if (!initialized) {
|
|
ath_hal_sysctl_header =
|
|
ATH_REGISTER_SYSCTL_TABLE(ath_root_table);
|
|
initialized = 1;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ath_hal_sysctl_unregister(void)
|
|
{
|
|
if (ath_hal_sysctl_header)
|
|
unregister_sysctl_table(ath_hal_sysctl_header);
|
|
}
|
|
|
|
/*
|
|
* Module glue.
|
|
*/
|
|
#include "version.h"
|
|
static char *dev_info = "ath_hal";
|
|
|
|
MODULE_AUTHOR("Errno Consulting, Sam Leffler");
|
|
MODULE_DESCRIPTION("Atheros Hardware Access Layer (HAL)");
|
|
MODULE_SUPPORTED_DEVICE("Atheros WLAN devices");
|
|
#ifdef MODULE_VERSION
|
|
MODULE_VERSION(TARGET ": " ATH_HAL_VERSION);
|
|
#endif
|
|
#ifdef MODULE_LICENSE
|
|
MODULE_LICENSE("Proprietary");
|
|
#endif
|
|
|
|
EXPORT_SYMBOL(ath_hal_probe);
|
|
EXPORT_SYMBOL(_ath_hal_attach);
|
|
EXPORT_SYMBOL(_ath_hal_detach);
|
|
EXPORT_SYMBOL(ath_hal_init_channels);
|
|
EXPORT_SYMBOL(ath_hal_getwirelessmodes);
|
|
EXPORT_SYMBOL(ath_hal_computetxtime);
|
|
EXPORT_SYMBOL(ath_hal_mhz2ieee);
|
|
EXPORT_SYMBOL(ath_hal_process_noisefloor);
|
|
|
|
static int __init
|
|
init_ath_hal(void)
|
|
{
|
|
const char *sep;
|
|
int i;
|
|
|
|
printk(KERN_INFO "%s: %s (", dev_info, ath_hal_version);
|
|
sep = "";
|
|
for (i = 0; ath_hal_buildopts[i] != NULL; i++) {
|
|
printk("%s%s", sep, ath_hal_buildopts[i]);
|
|
sep = ", ";
|
|
}
|
|
printk(")\n");
|
|
ath_hal_sysctl_register();
|
|
return (0);
|
|
}
|
|
module_init(init_ath_hal);
|
|
|
|
static void __exit
|
|
exit_ath_hal(void)
|
|
{
|
|
ath_hal_sysctl_unregister();
|
|
printk(KERN_INFO "%s: driver unloaded\n", dev_info);
|
|
}
|
|
module_exit(exit_ath_hal);
|