ah_osdep.c revision 219942
1162413Ssam/*- 2178354Ssam * Copyright (c) 2002-2008 Sam Leffler, Errno Consulting 3162413Ssam * All rights reserved. 4162413Ssam * 5162413Ssam * Redistribution and use in source and binary forms, with or without 6162413Ssam * modification, are permitted provided that the following conditions 7162413Ssam * are met: 8162413Ssam * 1. Redistributions of source code must retain the above copyright 9162413Ssam * notice, this list of conditions and the following disclaimer, 10162413Ssam * without modification. 11162413Ssam * 2. Redistributions in binary form must reproduce at minimum a disclaimer 12162413Ssam * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 13162413Ssam * redistribution must be conditioned upon including a substantially 14162413Ssam * similar Disclaimer requirement for further binary redistribution. 15162413Ssam * 16162413Ssam * NO WARRANTY 17162413Ssam * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 18162413Ssam * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19162413Ssam * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 20162413Ssam * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 21162413Ssam * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 22162413Ssam * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23162413Ssam * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24162413Ssam * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25162413Ssam * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26162413Ssam * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 27162413Ssam * THE POSSIBILITY OF SUCH DAMAGES. 28162413Ssam * 29162413Ssam * $FreeBSD: head/sys/dev/ath/ah_osdep.c 219942 2011-03-23 23:48:44Z adrian $ 30162413Ssam */ 31162413Ssam#include "opt_ah.h" 32162413Ssam 33162413Ssam#include <sys/param.h> 34162413Ssam#include <sys/systm.h> 35162413Ssam#include <sys/kernel.h> 36162413Ssam#include <sys/module.h> 37162413Ssam#include <sys/sysctl.h> 38162413Ssam#include <sys/bus.h> 39162413Ssam#include <sys/malloc.h> 40162413Ssam#include <sys/proc.h> 41162413Ssam 42162413Ssam#include <machine/stdarg.h> 43162413Ssam 44162413Ssam#include <net/ethernet.h> /* XXX for ether_sprintf */ 45162413Ssam 46185522Ssam#include <dev/ath/ath_hal/ah.h> 47162413Ssam 48162413Ssam/* 49162413Ssam * WiSoC boards overload the bus tag with information about the 50162413Ssam * board layout. We must extract the bus space tag from that 51162413Ssam * indirect structure. For everyone else the tag is passed in 52162413Ssam * directly. 53162413Ssam * XXX cache indirect ref privately 54162413Ssam */ 55162413Ssam#ifdef AH_SUPPORT_AR5312 56162413Ssam#define BUSTAG(ah) \ 57162413Ssam ((bus_space_tag_t) ((struct ar531x_config *)((ah)->ah_st))->tag) 58162413Ssam#else 59185522Ssam#define BUSTAG(ah) ((ah)->ah_st) 60162413Ssam#endif 61162413Ssam 62162413Ssamextern void ath_hal_printf(struct ath_hal *, const char*, ...) 63162413Ssam __printflike(2,3); 64162413Ssamextern void ath_hal_vprintf(struct ath_hal *, const char*, __va_list) 65162413Ssam __printflike(2, 0); 66162413Ssamextern const char* ath_hal_ether_sprintf(const u_int8_t *mac); 67162413Ssamextern void *ath_hal_malloc(size_t); 68162413Ssamextern void ath_hal_free(void *); 69162413Ssam#ifdef AH_ASSERT 70162413Ssamextern void ath_hal_assert_failed(const char* filename, 71162413Ssam int lineno, const char* msg); 72162413Ssam#endif 73162413Ssam#ifdef AH_DEBUG 74219315Sadrianextern void DO_HALDEBUG(struct ath_hal *ah, u_int mask, const char* fmt, ...); 75162413Ssam#endif /* AH_DEBUG */ 76162413Ssam 77162413Ssam/* NB: put this here instead of the driver to avoid circular references */ 78162413SsamSYSCTL_NODE(_hw, OID_AUTO, ath, CTLFLAG_RD, 0, "Atheros driver parameters"); 79162413SsamSYSCTL_NODE(_hw_ath, OID_AUTO, hal, CTLFLAG_RD, 0, "Atheros HAL parameters"); 80162413Ssam 81162413Ssam#ifdef AH_DEBUG 82219315Sadrianint ath_hal_debug = 0; 83162413SsamSYSCTL_INT(_hw_ath_hal, OID_AUTO, debug, CTLFLAG_RW, &ath_hal_debug, 84162413Ssam 0, "Atheros HAL debugging printfs"); 85162413SsamTUNABLE_INT("hw.ath.hal.debug", &ath_hal_debug); 86162413Ssam#endif /* AH_DEBUG */ 87162413Ssam 88219942Sadrianint ath_hal_ar5416_biasadj = 0; 89219942SadrianSYSCTL_INT(_hw_ath_hal, OID_AUTO, ar5416_biasadj, CTLFLAG_RW, 90219942Sadrian &ath_hal_debug, 0, "Enable 2ghz AR5416 direction sensitivity" 91219942Sadrian " bias adjust"); 92219942Sadrian 93162413Ssam/* NB: these are deprecated; they exist for now for compatibility */ 94162413Ssamint ath_hal_dma_beacon_response_time = 2; /* in TU's */ 95162413SsamSYSCTL_INT(_hw_ath_hal, OID_AUTO, dma_brt, CTLFLAG_RW, 96162413Ssam &ath_hal_dma_beacon_response_time, 0, 97162413Ssam "Atheros HAL DMA beacon response time"); 98162413Ssamint ath_hal_sw_beacon_response_time = 10; /* in TU's */ 99162413SsamSYSCTL_INT(_hw_ath_hal, OID_AUTO, sw_brt, CTLFLAG_RW, 100162413Ssam &ath_hal_sw_beacon_response_time, 0, 101162413Ssam "Atheros HAL software beacon response time"); 102162413Ssamint ath_hal_additional_swba_backoff = 0; /* in TU's */ 103162413SsamSYSCTL_INT(_hw_ath_hal, OID_AUTO, swba_backoff, CTLFLAG_RW, 104162413Ssam &ath_hal_additional_swba_backoff, 0, 105162413Ssam "Atheros HAL additional SWBA backoff time"); 106162413Ssam 107162413SsamMALLOC_DEFINE(M_ATH_HAL, "ath_hal", "ath hal data"); 108162413Ssam 109162413Ssamvoid* 110162413Ssamath_hal_malloc(size_t size) 111162413Ssam{ 112162413Ssam return malloc(size, M_ATH_HAL, M_NOWAIT | M_ZERO); 113162413Ssam} 114162413Ssam 115162413Ssamvoid 116162413Ssamath_hal_free(void* p) 117162413Ssam{ 118196935Ssam free(p, M_ATH_HAL); 119162413Ssam} 120162413Ssam 121162413Ssamvoid 122162413Ssamath_hal_vprintf(struct ath_hal *ah, const char* fmt, va_list ap) 123162413Ssam{ 124162413Ssam vprintf(fmt, ap); 125162413Ssam} 126162413Ssam 127162413Ssamvoid 128162413Ssamath_hal_printf(struct ath_hal *ah, const char* fmt, ...) 129162413Ssam{ 130162413Ssam va_list ap; 131162413Ssam va_start(ap, fmt); 132162413Ssam ath_hal_vprintf(ah, fmt, ap); 133162413Ssam va_end(ap); 134162413Ssam} 135162413Ssam 136162413Ssamconst char* 137162413Ssamath_hal_ether_sprintf(const u_int8_t *mac) 138162413Ssam{ 139162413Ssam return ether_sprintf(mac); 140162413Ssam} 141162413Ssam 142162413Ssam#ifdef AH_DEBUG 143162413Ssamvoid 144219315SadrianDO_HALDEBUG(struct ath_hal *ah, u_int mask, const char* fmt, ...) 145184369Ssam{ 146184369Ssam if (ath_hal_debug & mask) { 147184369Ssam __va_list ap; 148184369Ssam va_start(ap, fmt); 149184369Ssam ath_hal_vprintf(ah, fmt, ap); 150184369Ssam va_end(ap); 151184369Ssam } 152184369Ssam} 153162413Ssam#endif /* AH_DEBUG */ 154162413Ssam 155162413Ssam#ifdef AH_DEBUG_ALQ 156162413Ssam/* 157162413Ssam * ALQ register tracing support. 158162413Ssam * 159162413Ssam * Setting hw.ath.hal.alq=1 enables tracing of all register reads and 160162413Ssam * writes to the file /tmp/ath_hal.log. The file format is a simple 161162413Ssam * fixed-size array of records. When done logging set hw.ath.hal.alq=0 162162413Ssam * and then decode the file with the arcode program (that is part of the 163162413Ssam * HAL). If you start+stop tracing the data will be appended to an 164162413Ssam * existing file. 165162413Ssam * 166162413Ssam * NB: doesn't handle multiple devices properly; only one DEVICE record 167162413Ssam * is emitted and the different devices are not identified. 168162413Ssam */ 169162413Ssam#include <sys/alq.h> 170162413Ssam#include <sys/pcpu.h> 171185522Ssam#include <dev/ath/ath_hal/ah_decode.h> 172162413Ssam 173162413Ssamstatic struct alq *ath_hal_alq; 174162413Ssamstatic int ath_hal_alq_emitdev; /* need to emit DEVICE record */ 175162413Ssamstatic u_int ath_hal_alq_lost; /* count of lost records */ 176162413Ssamstatic const char *ath_hal_logfile = "/tmp/ath_hal.log"; 177162413Ssamstatic u_int ath_hal_alq_qsize = 64*1024; 178162413Ssam 179162413Ssamstatic int 180162413Ssamath_hal_setlogging(int enable) 181162413Ssam{ 182162413Ssam int error; 183162413Ssam 184162413Ssam if (enable) { 185168589Srwatson error = alq_open(&ath_hal_alq, ath_hal_logfile, 186168589Srwatson curthread->td_ucred, ALQ_DEFAULT_CMODE, 187168589Srwatson sizeof (struct athregrec), ath_hal_alq_qsize); 188168589Srwatson ath_hal_alq_lost = 0; 189168589Srwatson ath_hal_alq_emitdev = 1; 190168589Srwatson printf("ath_hal: logging to %s enabled\n", 191168589Srwatson ath_hal_logfile); 192162413Ssam } else { 193162413Ssam if (ath_hal_alq) 194162413Ssam alq_close(ath_hal_alq); 195162413Ssam ath_hal_alq = NULL; 196162413Ssam printf("ath_hal: logging disabled\n"); 197162413Ssam error = 0; 198162413Ssam } 199162413Ssam return (error); 200162413Ssam} 201162413Ssam 202162413Ssamstatic int 203162413Ssamsysctl_hw_ath_hal_log(SYSCTL_HANDLER_ARGS) 204162413Ssam{ 205162413Ssam int error, enable; 206162413Ssam 207162413Ssam enable = (ath_hal_alq != NULL); 208162413Ssam error = sysctl_handle_int(oidp, &enable, 0, req); 209162413Ssam if (error || !req->newptr) 210162413Ssam return (error); 211162413Ssam else 212162413Ssam return (ath_hal_setlogging(enable)); 213162413Ssam} 214162413SsamSYSCTL_PROC(_hw_ath_hal, OID_AUTO, alq, CTLTYPE_INT|CTLFLAG_RW, 215162413Ssam 0, 0, sysctl_hw_ath_hal_log, "I", "Enable HAL register logging"); 216162413SsamSYSCTL_INT(_hw_ath_hal, OID_AUTO, alq_size, CTLFLAG_RW, 217162413Ssam &ath_hal_alq_qsize, 0, "In-memory log size (#records)"); 218162413SsamSYSCTL_INT(_hw_ath_hal, OID_AUTO, alq_lost, CTLFLAG_RW, 219162413Ssam &ath_hal_alq_lost, 0, "Register operations not logged"); 220162413Ssam 221162413Ssamstatic struct ale * 222162413Ssamath_hal_alq_get(struct ath_hal *ah) 223162413Ssam{ 224162413Ssam struct ale *ale; 225162413Ssam 226162413Ssam if (ath_hal_alq_emitdev) { 227162413Ssam ale = alq_get(ath_hal_alq, ALQ_NOWAIT); 228162413Ssam if (ale) { 229162413Ssam struct athregrec *r = 230162413Ssam (struct athregrec *) ale->ae_data; 231162413Ssam r->op = OP_DEVICE; 232162413Ssam r->reg = 0; 233162413Ssam r->val = ah->ah_devid; 234162413Ssam alq_post(ath_hal_alq, ale); 235162413Ssam ath_hal_alq_emitdev = 0; 236162413Ssam } else 237162413Ssam ath_hal_alq_lost++; 238162413Ssam } 239162413Ssam ale = alq_get(ath_hal_alq, ALQ_NOWAIT); 240162413Ssam if (!ale) 241162413Ssam ath_hal_alq_lost++; 242162413Ssam return ale; 243162413Ssam} 244162413Ssam 245162413Ssamvoid 246162413Ssamath_hal_reg_write(struct ath_hal *ah, u_int32_t reg, u_int32_t val) 247162413Ssam{ 248162413Ssam bus_space_tag_t tag = BUSTAG(ah); 249185522Ssam bus_space_handle_t h = ah->ah_sh; 250162413Ssam 251162413Ssam if (ath_hal_alq) { 252162413Ssam struct ale *ale = ath_hal_alq_get(ah); 253162413Ssam if (ale) { 254162413Ssam struct athregrec *r = (struct athregrec *) ale->ae_data; 255162413Ssam r->op = OP_WRITE; 256162413Ssam r->reg = reg; 257162413Ssam r->val = val; 258162413Ssam alq_post(ath_hal_alq, ale); 259162413Ssam } 260162413Ssam } 261162413Ssam#if _BYTE_ORDER == _BIG_ENDIAN 262195418Ssam if (OS_REG_UNSWAPPED(reg)) 263162413Ssam bus_space_write_4(tag, h, reg, val); 264162413Ssam else 265162413Ssam#endif 266162413Ssam bus_space_write_stream_4(tag, h, reg, val); 267162413Ssam} 268162413Ssam 269162413Ssamu_int32_t 270162413Ssamath_hal_reg_read(struct ath_hal *ah, u_int32_t reg) 271162413Ssam{ 272162413Ssam bus_space_tag_t tag = BUSTAG(ah); 273185522Ssam bus_space_handle_t h = ah->ah_sh; 274162413Ssam u_int32_t val; 275162413Ssam 276162413Ssam#if _BYTE_ORDER == _BIG_ENDIAN 277195418Ssam if (OS_REG_UNSWAPPED(reg)) 278162413Ssam val = bus_space_read_4(tag, h, reg); 279162413Ssam else 280162413Ssam#endif 281162413Ssam val = bus_space_read_stream_4(tag, h, reg); 282162413Ssam if (ath_hal_alq) { 283162413Ssam struct ale *ale = ath_hal_alq_get(ah); 284162413Ssam if (ale) { 285162413Ssam struct athregrec *r = (struct athregrec *) ale->ae_data; 286162413Ssam r->op = OP_READ; 287162413Ssam r->reg = reg; 288162413Ssam r->val = val; 289162413Ssam alq_post(ath_hal_alq, ale); 290162413Ssam } 291162413Ssam } 292162413Ssam return val; 293162413Ssam} 294162413Ssam 295162413Ssamvoid 296162413SsamOS_MARK(struct ath_hal *ah, u_int id, u_int32_t v) 297162413Ssam{ 298162413Ssam if (ath_hal_alq) { 299162413Ssam struct ale *ale = ath_hal_alq_get(ah); 300162413Ssam if (ale) { 301162413Ssam struct athregrec *r = (struct athregrec *) ale->ae_data; 302162413Ssam r->op = OP_MARK; 303162413Ssam r->reg = id; 304162413Ssam r->val = v; 305162413Ssam alq_post(ath_hal_alq, ale); 306162413Ssam } 307162413Ssam } 308162413Ssam} 309162413Ssam#elif defined(AH_DEBUG) || defined(AH_REGOPS_FUNC) 310162413Ssam/* 311162413Ssam * Memory-mapped device register read/write. These are here 312162413Ssam * as routines when debugging support is enabled and/or when 313162413Ssam * explicitly configured to use function calls. The latter is 314162413Ssam * for architectures that might need to do something before 315162413Ssam * referencing memory (e.g. remap an i/o window). 316162413Ssam * 317162413Ssam * NB: see the comments in ah_osdep.h about byte-swapping register 318162413Ssam * reads and writes to understand what's going on below. 319162413Ssam */ 320162413Ssam 321162413Ssamvoid 322162413Ssamath_hal_reg_write(struct ath_hal *ah, u_int32_t reg, u_int32_t val) 323162413Ssam{ 324162413Ssam bus_space_tag_t tag = BUSTAG(ah); 325185522Ssam bus_space_handle_t h = ah->ah_sh; 326162413Ssam 327162413Ssam#if _BYTE_ORDER == _BIG_ENDIAN 328195418Ssam if (OS_REG_UNSWAPPED(reg)) 329162413Ssam bus_space_write_4(tag, h, reg, val); 330162413Ssam else 331162413Ssam#endif 332162413Ssam bus_space_write_stream_4(tag, h, reg, val); 333162413Ssam} 334162413Ssam 335162413Ssamu_int32_t 336162413Ssamath_hal_reg_read(struct ath_hal *ah, u_int32_t reg) 337162413Ssam{ 338162413Ssam bus_space_tag_t tag = BUSTAG(ah); 339185522Ssam bus_space_handle_t h = ah->ah_sh; 340162413Ssam u_int32_t val; 341162413Ssam 342162413Ssam#if _BYTE_ORDER == _BIG_ENDIAN 343195418Ssam if (OS_REG_UNSWAPPED(reg)) 344162413Ssam val = bus_space_read_4(tag, h, reg); 345162413Ssam else 346162413Ssam#endif 347162413Ssam val = bus_space_read_stream_4(tag, h, reg); 348162413Ssam return val; 349162413Ssam} 350162413Ssam#endif /* AH_DEBUG || AH_REGOPS_FUNC */ 351162413Ssam 352162413Ssam#ifdef AH_ASSERT 353162413Ssamvoid 354162413Ssamath_hal_assert_failed(const char* filename, int lineno, const char *msg) 355162413Ssam{ 356162413Ssam printf("Atheros HAL assertion failure: %s: line %u: %s\n", 357162413Ssam filename, lineno, msg); 358162413Ssam panic("ath_hal_assert"); 359162413Ssam} 360162413Ssam#endif /* AH_ASSERT */ 361