ah_osdep.c revision 227309
1/*- 2 * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer, 10 * without modification. 11 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13 * redistribution must be conditioned upon including a substantially 14 * similar Disclaimer requirement for further binary redistribution. 15 * 16 * NO WARRANTY 17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27 * THE POSSIBILITY OF SUCH DAMAGES. 28 * 29 * $FreeBSD: head/sys/dev/ath/ah_osdep.c 227309 2011-11-07 15:43:11Z ed $ 30 */ 31#include "opt_ah.h" 32 33#include <sys/param.h> 34#include <sys/systm.h> 35#include <sys/kernel.h> 36#include <sys/module.h> 37#include <sys/sysctl.h> 38#include <sys/bus.h> 39#include <sys/malloc.h> 40#include <sys/proc.h> 41 42#include <machine/stdarg.h> 43 44#include <net/ethernet.h> /* XXX for ether_sprintf */ 45 46#include <dev/ath/ath_hal/ah.h> 47 48/* 49 * WiSoC boards overload the bus tag with information about the 50 * board layout. We must extract the bus space tag from that 51 * indirect structure. For everyone else the tag is passed in 52 * directly. 53 * XXX cache indirect ref privately 54 */ 55#ifdef AH_SUPPORT_AR5312 56#define BUSTAG(ah) \ 57 ((bus_space_tag_t) ((struct ar531x_config *)((ah)->ah_st))->tag) 58#else 59#define BUSTAG(ah) ((ah)->ah_st) 60#endif 61 62extern void ath_hal_printf(struct ath_hal *, const char*, ...) 63 __printflike(2,3); 64extern void ath_hal_vprintf(struct ath_hal *, const char*, __va_list) 65 __printflike(2, 0); 66extern const char* ath_hal_ether_sprintf(const u_int8_t *mac); 67extern void *ath_hal_malloc(size_t); 68extern void ath_hal_free(void *); 69#ifdef AH_ASSERT 70extern void ath_hal_assert_failed(const char* filename, 71 int lineno, const char* msg); 72#endif 73#ifdef AH_DEBUG 74extern void DO_HALDEBUG(struct ath_hal *ah, u_int mask, const char* fmt, ...); 75#endif /* AH_DEBUG */ 76 77/* NB: put this here instead of the driver to avoid circular references */ 78SYSCTL_NODE(_hw, OID_AUTO, ath, CTLFLAG_RD, 0, "Atheros driver parameters"); 79static SYSCTL_NODE(_hw_ath, OID_AUTO, hal, CTLFLAG_RD, 0, 80 "Atheros HAL parameters"); 81 82#ifdef AH_DEBUG 83int ath_hal_debug = 0; 84SYSCTL_INT(_hw_ath_hal, OID_AUTO, debug, CTLFLAG_RW, &ath_hal_debug, 85 0, "Atheros HAL debugging printfs"); 86TUNABLE_INT("hw.ath.hal.debug", &ath_hal_debug); 87#endif /* AH_DEBUG */ 88 89static MALLOC_DEFINE(M_ATH_HAL, "ath_hal", "ath hal data"); 90 91void* 92ath_hal_malloc(size_t size) 93{ 94 return malloc(size, M_ATH_HAL, M_NOWAIT | M_ZERO); 95} 96 97void 98ath_hal_free(void* p) 99{ 100 free(p, M_ATH_HAL); 101} 102 103void 104ath_hal_vprintf(struct ath_hal *ah, const char* fmt, va_list ap) 105{ 106 vprintf(fmt, ap); 107} 108 109void 110ath_hal_printf(struct ath_hal *ah, const char* fmt, ...) 111{ 112 va_list ap; 113 va_start(ap, fmt); 114 ath_hal_vprintf(ah, fmt, ap); 115 va_end(ap); 116} 117 118const char* 119ath_hal_ether_sprintf(const u_int8_t *mac) 120{ 121 return ether_sprintf(mac); 122} 123 124#ifdef AH_DEBUG 125 126/* This must match the definition in ath_hal/ah_debug.h */ 127#define HAL_DEBUG_UNMASKABLE 0xf0000000 128void 129DO_HALDEBUG(struct ath_hal *ah, u_int mask, const char* fmt, ...) 130{ 131 if ((mask == HAL_DEBUG_UNMASKABLE) || 132 (ah != NULL && ah->ah_config.ah_debug & mask) || 133 (ath_hal_debug & mask)) { 134 __va_list ap; 135 va_start(ap, fmt); 136 ath_hal_vprintf(ah, fmt, ap); 137 va_end(ap); 138 } 139} 140#undef HAL_DEBUG_UNMASKABLE 141#endif /* AH_DEBUG */ 142 143#ifdef AH_DEBUG_ALQ 144/* 145 * ALQ register tracing support. 146 * 147 * Setting hw.ath.hal.alq=1 enables tracing of all register reads and 148 * writes to the file /tmp/ath_hal.log. The file format is a simple 149 * fixed-size array of records. When done logging set hw.ath.hal.alq=0 150 * and then decode the file with the arcode program (that is part of the 151 * HAL). If you start+stop tracing the data will be appended to an 152 * existing file. 153 * 154 * NB: doesn't handle multiple devices properly; only one DEVICE record 155 * is emitted and the different devices are not identified. 156 */ 157#include <sys/alq.h> 158#include <sys/pcpu.h> 159#include <dev/ath/ath_hal/ah_decode.h> 160 161static struct alq *ath_hal_alq; 162static int ath_hal_alq_emitdev; /* need to emit DEVICE record */ 163static u_int ath_hal_alq_lost; /* count of lost records */ 164static char ath_hal_logfile[MAXPATHLEN] = "/tmp/ath_hal.log"; 165 166SYSCTL_STRING(_hw_ath_hal, OID_AUTO, alq_logfile, CTLFLAG_RW, 167 &ath_hal_logfile, sizeof(kernelname), "Name of ALQ logfile"); 168 169static u_int ath_hal_alq_qsize = 64*1024; 170 171static int 172ath_hal_setlogging(int enable) 173{ 174 int error; 175 176 if (enable) { 177 error = alq_open(&ath_hal_alq, ath_hal_logfile, 178 curthread->td_ucred, ALQ_DEFAULT_CMODE, 179 sizeof (struct athregrec), ath_hal_alq_qsize); 180 ath_hal_alq_lost = 0; 181 ath_hal_alq_emitdev = 1; 182 printf("ath_hal: logging to %s enabled\n", 183 ath_hal_logfile); 184 } else { 185 if (ath_hal_alq) 186 alq_close(ath_hal_alq); 187 ath_hal_alq = NULL; 188 printf("ath_hal: logging disabled\n"); 189 error = 0; 190 } 191 return (error); 192} 193 194static int 195sysctl_hw_ath_hal_log(SYSCTL_HANDLER_ARGS) 196{ 197 int error, enable; 198 199 enable = (ath_hal_alq != NULL); 200 error = sysctl_handle_int(oidp, &enable, 0, req); 201 if (error || !req->newptr) 202 return (error); 203 else 204 return (ath_hal_setlogging(enable)); 205} 206SYSCTL_PROC(_hw_ath_hal, OID_AUTO, alq, CTLTYPE_INT|CTLFLAG_RW, 207 0, 0, sysctl_hw_ath_hal_log, "I", "Enable HAL register logging"); 208SYSCTL_INT(_hw_ath_hal, OID_AUTO, alq_size, CTLFLAG_RW, 209 &ath_hal_alq_qsize, 0, "In-memory log size (#records)"); 210SYSCTL_INT(_hw_ath_hal, OID_AUTO, alq_lost, CTLFLAG_RW, 211 &ath_hal_alq_lost, 0, "Register operations not logged"); 212 213static struct ale * 214ath_hal_alq_get(struct ath_hal *ah) 215{ 216 struct ale *ale; 217 218 if (ath_hal_alq_emitdev) { 219 ale = alq_get(ath_hal_alq, ALQ_NOWAIT); 220 if (ale) { 221 struct athregrec *r = 222 (struct athregrec *) ale->ae_data; 223 r->op = OP_DEVICE; 224 r->reg = 0; 225 r->val = ah->ah_devid; 226 alq_post(ath_hal_alq, ale); 227 ath_hal_alq_emitdev = 0; 228 } else 229 ath_hal_alq_lost++; 230 } 231 ale = alq_get(ath_hal_alq, ALQ_NOWAIT); 232 if (!ale) 233 ath_hal_alq_lost++; 234 return ale; 235} 236 237void 238ath_hal_reg_write(struct ath_hal *ah, u_int32_t reg, u_int32_t val) 239{ 240 bus_space_tag_t tag = BUSTAG(ah); 241 bus_space_handle_t h = ah->ah_sh; 242 243 if (ath_hal_alq) { 244 struct ale *ale = ath_hal_alq_get(ah); 245 if (ale) { 246 struct athregrec *r = (struct athregrec *) ale->ae_data; 247 r->op = OP_WRITE; 248 r->reg = reg; 249 r->val = val; 250 alq_post(ath_hal_alq, ale); 251 } 252 } 253#if _BYTE_ORDER == _BIG_ENDIAN 254 if (OS_REG_UNSWAPPED(reg)) 255 bus_space_write_4(tag, h, reg, val); 256 else 257#endif 258 bus_space_write_stream_4(tag, h, reg, val); 259} 260 261u_int32_t 262ath_hal_reg_read(struct ath_hal *ah, u_int32_t reg) 263{ 264 bus_space_tag_t tag = BUSTAG(ah); 265 bus_space_handle_t h = ah->ah_sh; 266 u_int32_t val; 267 268#if _BYTE_ORDER == _BIG_ENDIAN 269 if (OS_REG_UNSWAPPED(reg)) 270 val = bus_space_read_4(tag, h, reg); 271 else 272#endif 273 val = bus_space_read_stream_4(tag, h, reg); 274 if (ath_hal_alq) { 275 struct ale *ale = ath_hal_alq_get(ah); 276 if (ale) { 277 struct athregrec *r = (struct athregrec *) ale->ae_data; 278 r->op = OP_READ; 279 r->reg = reg; 280 r->val = val; 281 alq_post(ath_hal_alq, ale); 282 } 283 } 284 return val; 285} 286 287void 288OS_MARK(struct ath_hal *ah, u_int id, u_int32_t v) 289{ 290 if (ath_hal_alq) { 291 struct ale *ale = ath_hal_alq_get(ah); 292 if (ale) { 293 struct athregrec *r = (struct athregrec *) ale->ae_data; 294 r->op = OP_MARK; 295 r->reg = id; 296 r->val = v; 297 alq_post(ath_hal_alq, ale); 298 } 299 } 300} 301#elif defined(AH_DEBUG) || defined(AH_REGOPS_FUNC) 302/* 303 * Memory-mapped device register read/write. These are here 304 * as routines when debugging support is enabled and/or when 305 * explicitly configured to use function calls. The latter is 306 * for architectures that might need to do something before 307 * referencing memory (e.g. remap an i/o window). 308 * 309 * NB: see the comments in ah_osdep.h about byte-swapping register 310 * reads and writes to understand what's going on below. 311 */ 312 313void 314ath_hal_reg_write(struct ath_hal *ah, u_int32_t reg, u_int32_t val) 315{ 316 bus_space_tag_t tag = BUSTAG(ah); 317 bus_space_handle_t h = ah->ah_sh; 318 319#if _BYTE_ORDER == _BIG_ENDIAN 320 if (OS_REG_UNSWAPPED(reg)) 321 bus_space_write_4(tag, h, reg, val); 322 else 323#endif 324 bus_space_write_stream_4(tag, h, reg, val); 325} 326 327u_int32_t 328ath_hal_reg_read(struct ath_hal *ah, u_int32_t reg) 329{ 330 bus_space_tag_t tag = BUSTAG(ah); 331 bus_space_handle_t h = ah->ah_sh; 332 u_int32_t val; 333 334#if _BYTE_ORDER == _BIG_ENDIAN 335 if (OS_REG_UNSWAPPED(reg)) 336 val = bus_space_read_4(tag, h, reg); 337 else 338#endif 339 val = bus_space_read_stream_4(tag, h, reg); 340 return val; 341} 342#endif /* AH_DEBUG || AH_REGOPS_FUNC */ 343 344#ifdef AH_ASSERT 345void 346ath_hal_assert_failed(const char* filename, int lineno, const char *msg) 347{ 348 printf("Atheros HAL assertion failure: %s: line %u: %s\n", 349 filename, lineno, msg); 350 panic("ath_hal_assert"); 351} 352#endif /* AH_ASSERT */ 353