ath_osdep.c revision 1000:dd54117d55b1
1/* 2 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6/* 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer, 12 * without modification. 13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 14 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 15 * redistribution must be conditioned upon including a substantially 16 * similar Disclaimer requirement for further binary redistribution. 17 * 3. Neither the names of the above-listed copyright holders nor the names 18 * of any contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * NO WARRANTY 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 24 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 25 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 26 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 27 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 30 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 32 * THE POSSIBILITY OF SUCH DAMAGES. 33 * 34 */ 35 36#pragma ident "%Z%%M% %I% %E% SMI" 37 38#include <sys/param.h> 39#include <sys/types.h> 40#include <sys/cmn_err.h> 41#include <sys/kmem.h> 42#include <sys/ddi.h> 43#include <sys/sunddi.h> 44#include <sys/varargs.h> 45#include "ath_hal.h" 46#include "ath_ieee80211.h" 47#include "ath_impl.h" 48 49struct ath_halfix { 50 void *p; 51 size_t size; 52 int malloced; 53 int freed; 54}; 55 56static struct ath_halfix ath_halfix[32]; 57 58/* HAL layer needs these definitions */ 59int ath_hal_dma_beacon_response_time = 2; /* in TU's */ 60int ath_hal_sw_beacon_response_time = 10; /* in TU's */ 61int ath_hal_additional_swba_backoff = 0; /* in TU's */ 62 63/* 64 * Print/log message support. 65 */ 66 67void 68ath_hal_printf(struct ath_hal *ah, const char *fmt, ...) 69{ 70 va_list ap; 71 72 _NOTE(ARGUNUSED(ah)) 73 va_start(ap, fmt); 74 vcmn_err(CE_CONT, fmt, ap); 75 va_end(ap); 76} 77 78/* 79 * Delay n microseconds. 80 */ 81void 82ath_hal_delay(int n) 83{ 84 drv_usecwait(n); 85} 86 87/* 88 * ath_hal_malloc() and ath_hal_free() are called 89 * within ath_hal.o. We must record the size of 90 * the memory alloced, so ath_hal_free() can get 91 * the size and then calls kmem_free(). 92 */ 93void * 94ath_hal_malloc(size_t size) 95{ 96 void *p; 97 int i; 98 99 /* support 16 devices(max leakage of one device is 8) */ 100 for (i = 0; i < 32; i++) { 101 if (ath_halfix[i].malloced == 0) 102 break; 103 } 104 if (i >= 32) { 105 ath_problem("ath: ath_hal_malloc(): too many malloc\n"); 106 return (NULL); 107 } 108 p = kmem_zalloc(size, KM_SLEEP); 109 ath_halfix[i].p = p; 110 ath_halfix[i].size = size; 111 ath_halfix[i].malloced = 1; 112 ath_halfix[i].freed = 0; 113 ATH_DEBUG((ATH_DBG_OSDEP, "ath: ath_hal_malloc(): " 114 "%d: p=%p, size=%d\n", i, p, size)); 115 return (p); 116} 117 118void 119ath_hal_free(void* p) 120{ 121 int i; 122 for (i = 0; i < 32; i++) { 123 if (ath_halfix[i].p == p) 124 break; 125 } 126 if (i >= 32) { 127 ath_problem("ath: ath_hal_free(): no record for %p\n", p); 128 return; 129 } 130 kmem_free(p, ath_halfix[i].size); 131 ath_halfix[i].malloced = 0; 132 ath_halfix[i].freed = 1; 133 ATH_DEBUG((ATH_DBG_OSDEP, "ath: ath_hal_free(): %d: p=%p, size=%d\n", 134 i, p, ath_halfix[i].size)); 135} 136 137void * 138ath_hal_memcpy(void *dst, const void *src, size_t n) 139{ 140 bcopy(src, dst, n); 141 return (dst); 142} 143 144void 145ath_hal_memzero(void *dst, size_t n) 146{ 147 bzero(dst, n); 148} 149 150/* 151 * So far as I know and test, hal.o has a bug that when attaching, 152 * it calls ath_hal_malloc() four times while detaching it calls 153 * ath_hal_free() only 3 times, so everytime when a pair of driver 154 * load/unload is done, a memory leak occurs. The function 155 * free_hal_leaked_mem() just help free the memory that alloced by 156 * hal.o but not freed by it. In fact, when attaching, hal.o only 157 * call ath_hal_alloc() four times, here assuming a maximum times of 158 * 8 just considers some special cases, we have no source after all! 159 */ 160void 161ath_halfix_init(void) 162{ 163 int i; 164 165 for (i = 0; i < 32; i++) { 166 ath_halfix[i].malloced = 0; 167 } 168} 169 170void 171ath_halfix_finit(void) 172{ 173 int i; 174 175 for (i = 0; i < 32; i++) { 176 if ((ath_halfix[i].malloced == 1) && 177 (ath_halfix[i].freed == 0)) { 178 kmem_free(ath_halfix[i].p, ath_halfix[i].size); 179 } 180 } 181} 182