/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * * Copyright (C) 2002 by Alan Korr * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ //#define LOGF_ENABLE #include #include #include "led.h" #include "cpu.h" #include "system.h" #include "debug.h" #include "panic.h" #include "power.h" #include "string.h" #include "ata-driver.h" #include "ata-defines.h" #include "fs_defines.h" #include "storage.h" #include "logf.h" #define SELECT_DEVICE1 0x10 #define SELECT_LBA 0x40 #define CONTROL_nIEN 0x02 #define CONTROL_SRST 0x04 #define CMD_READ_SECTORS 0x20 #define CMD_WRITE_SECTORS 0x30 #define CMD_WRITE_SECTORS_EXT 0x34 #define CMD_READ_MULTIPLE 0xC4 #define CMD_READ_MULTIPLE_EXT 0x29 #define CMD_WRITE_MULTIPLE 0xC5 #define CMD_WRITE_MULTIPLE_EXT 0x39 #define CMD_SET_MULTIPLE_MODE 0xC6 #ifdef HAVE_ATA_SMART #define CMD_SMART 0xB0 #endif #define CMD_STANDBY_IMMEDIATE 0xE0 #define CMD_STANDBY 0xE2 #define CMD_IDENTIFY 0xEC #define CMD_SLEEP 0xE6 #define CMD_FLUSH_CACHE 0xE7 #define CMD_FLUSH_CACHE_EXT 0xEA #define CMD_SET_FEATURES 0xEF #define CMD_SECURITY_FREEZE_LOCK 0xF5 #ifdef HAVE_ATA_DMA #define CMD_READ_DMA 0xC8 #define CMD_READ_DMA_EXT 0x25 #define CMD_WRITE_DMA 0xCA #define CMD_WRITE_DMA_EXT 0x35 #endif #define READWRITE_TIMEOUT 5*HZ #ifdef HAVE_ATA_POWER_OFF #define ATA_POWER_OFF_TIMEOUT 2*HZ #endif #if defined(HAVE_USBSTACK) #define ATA_ACTIVE_IN_USB 1 #else #define ATA_ACTIVE_IN_USB 0 #endif enum { ATA_BOOT = -1, ATA_OFF, ATA_SLEEPING, ATA_SPINUP, ATA_ON, }; static int ata_state = ATA_BOOT; static int ata_device; /* device 0 (master) or 1 (slave) */ #if (CONFIG_LED == LED_REAL) static bool ata_led_enabled = true; static bool ata_led_on = false; #endif static long sleep_timeout = 5*HZ; static long last_disk_activity = -1; #ifdef HAVE_ATA_POWER_OFF static long power_off_tick = 0; #endif static uint8_t multisectors; /* number of supported multisectors */ #ifdef HAVE_ATA_DMA static int dma_mode = 0; #endif #ifdef HAVE_ATA_POWER_OFF static int ata_power_on(void); #endif static int perform_soft_reset(void); static int set_multiple_mode(int sectors); static int set_features(void); static inline void keep_ata_active(void) { last_disk_activity = current_tick; } static inline bool ata_sleep_timed_out(void) { return sleep_timeout && TIME_AFTER(current_tick, last_disk_activity + sleep_timeout); } static inline bool ata_power_off_timed_out(void) { #ifdef HAVE_ATA_POWER_OFF return power_off_tick && TIME_AFTER(current_tick, power_off_tick); #else return false; #endif } #include "ata-common.c" #ifndef ATA_TARGET_POLLING static ICODE_ATTR int wait_for_bsy(void) { long timeout = current_tick + HZ*30; do { if (!(ATA_IN8(ATA_STATUS) & STATUS_BSY)) return 1; keep_ata_active(); yield(); } while (TIME_BEFORE(current_tick, timeout)); return 0; /* timeout */ } static ICODE_ATTR int wait_for_rdy(void) { long timeout; if (!wait_for_bsy()) return 0; timeout = current_tick + HZ*10; do { if (ATA_IN8(ATA_ALT_STATUS) & STATUS_RDY) return 1; keep_ata_active(); yield(); } while (TIME_BEFORE(current_tick, timeout)); return 0; /* timeout */ } #else #define wait_for_bsy ata_wait_for_bsy #define wait_for_rdy ata_wait_for_rdy #endif static int ata_perform_wakeup(int state) { logf("ata WAKE %ld", current_tick); if (state > ATA_OFF) { if (perform_soft_reset()) { return -1; } } #ifdef HAVE_ATA_POWER_OFF else { if (ata_power_on()) { return -2; } } #endif return 0; } static int ata_perform_sleep(void) { /* If device doesn't support PM features, don't try to sleep. */ if (!ata_disk_can_sleep()) return 0; // XXX or return a failure? logf("ata SLEEP %ld", current_tick); ATA_OUT8(ATA_SELECT, ata_device); if(!wait_for_rdy()) { DEBUGF("ata_perform_sleep() - not RDY\n"); return -1; } /* STANDBY IMMEDIATE - writes all cached data - transitions to PM2:Standby - enters Standby_z power condition This places the device into a state where power-off is safe. We will cut power at a later time. */ ATA_OUT8(ATA_COMMAND, CMD_STANDBY_IMMEDIATE); if (!wait_for_rdy()) { DEBUGF("ata_perform_sleep() - CMD failed\n"); return -2; } return 0; } static int ata_perform_flush_cache(void) { uint8_t cmd; if (!canflush) { return 0; #ifdef HAVE_LBA48 } else if (ata_lba48 && identify_info[83] & (1 << 13)) { cmd = CMD_FLUSH_CACHE_EXT; /* Flag, optional, ATA-6 and up, for use with LBA48 devices */ #endif } else if (identify_info[83] & (1 << 12)) { cmd = CMD_FLUSH_CACHE; /* Flag, mandatory, ATA-6 and up */ } else if (identify_info[80] >= (1 << 5)) { /* Use >= instead of '&' because bits lower than the latest standard we support don't have to be set */ cmd = CMD_FLUSH_CACHE; /* No flag, mandatory, ATA-5 (Optional for ATA-4) */ } else { /* If neither (mandatory!) command is supported then don't issue it. */ canflush = 0; return 0; } logf("ata FLUSH CACHE %ld", current_tick); ATA_OUT8(ATA_SELECT, ata_device); if(!wait_for_rdy()) { DEBUGF("ata_perform_flush_cache() - not RDY\n"); return -1; } ATA_OUT8(ATA_COMMAND, cmd); if (!wait_for_rdy()) { DEBUGF("ata_perform_flush_cache() - CMD failed\n"); return -2; } return 0; } int ata_flush(void) { if (ata_state >= ATA_SPINUP) { mutex_lock(&ata_mutex); ata_perform_flush_cache(); mutex_unlock(&ata_mutex); } return 0; } static ICODE_ATTR int wait_for_start_of_transfer(void) { if (!wait_for_bsy()) return 0; return (ATA_IN8(ATA_ALT_STATUS) & (STATUS_BSY|STATUS_DRQ)) == STATUS_DRQ; } static ICODE_ATTR int wait_for_end_of_transfer(void) { if (!wait_for_bsy()) return 0; return (ATA_IN8(ATA_ALT_STATUS) & (STATUS_BSY|STATUS_RDY|STATUS_DF|STATUS_DRQ|STATUS_ERR)) == STATUS_RDY; } #if (CONFIG_LED == LED_REAL) /* Conditionally block LED access for the ATA driver, so the LED can be * (mis)used for other purposes */ static void ata_led(bool on) { ata_led_on = on; if (ata_led_enabled) led(ata_led_on); } #else #define ata_led(on) led(on) #endif #ifndef ATA_OPTIMIZED_READING static ICODE_ATTR void copy_read_sectors(unsigned char* buf, int wordcount) { unsigned short tmp = 0; if ( (unsigned long)buf & 1) { /* not 16-bit aligned, copy byte by byte */ unsigned char* bufend = buf + wordcount*2; do { tmp = ATA_IN16(ATA_DATA); #if defined(ROCKBOX_LITTLE_ENDIAN) *buf++ = tmp & 0xff; /* I assume big endian */ *buf++ = tmp >> 8; /* and don't use the SWAB16 macro */ #else *buf++ = tmp >> 8; *buf++ = tmp & 0xff; #endif } while (buf < bufend); /* tail loop is faster */ } else { /* 16-bit aligned, can do faster copy */ unsigned short* wbuf = (unsigned short*)buf; unsigned short* wbufend = wbuf + wordcount; do { *wbuf = ATA_IN16(ATA_DATA); } while (++wbuf < wbufend); /* tail loop is faster */ } } #endif /* !ATA_OPTIMIZED_READING */ #ifndef ATA_OPTIMIZED_WRITING static ICODE_ATTR void copy_write_sectors(const unsigned char* buf, int wordcount) { if ( (unsigned long)buf & 1) { /* not 16-bit aligned, copy byte by byte */ unsigned short tmp = 0; const unsigned char* bufend = buf + wordcount*2; do { #if defined(ROCKBOX_LITTLE_ENDIAN) tmp = (unsigned short) *buf++; tmp |= (unsigned short) *buf++ << 8; #else tmp = (unsigned short) *buf++ << 8; tmp |= (unsigned short) *buf++; #endif ATA_OUT16(ATA_DATA, tmp); } while (buf < bufend); /* tail loop is faster */ } else { /* 16-bit aligned, can do faster copy */ unsigned short* wbuf = (unsigned short*)buf; unsigned short* wbufend = wbuf + wordcount; do { ATA_OUT16(ATA_DATA, *wbuf); } while (++wbuf < wbufend); /* tail loop is faster */ } } #endif /* !ATA_OPTIMIZED_WRITING */ static int ata_transfer_sectors(uint64_t start, int incount, void* inbuf, int write) { int ret = 0; long timeout; int count; void* buf; long spinup_start = spinup_start; #ifdef HAVE_ATA_DMA bool usedma = false; #endif if (start + incount > total_sectors) { ret = -1; goto error; } keep_ata_active(); ata_led(true); if (ata_state < ATA_ON) { spinup_start = current_tick; int state = ata_state; ata_state = ATA_SPINUP; if (ata_perform_wakeup(state)) { ret = -2; goto error; } } logf("ata XFER (%d) %d @ %llu", write, incount, start); timeout = current_tick + READWRITE_TIMEOUT; ATA_OUT8(ATA_SELECT, ata_device); if (!wait_for_rdy()) { ret = -3; goto error; } retry: buf = inbuf; count = incount; while (TIME_BEFORE(current_tick, timeout)) { ret = 0; keep_ata_active(); #ifdef HAVE_ATA_DMA /* If DMA is supported and parameters are ok for DMA, use it */ if (dma_mode && ata_dma_setup(inbuf, incount * log_sector_size, write)) usedma = true; #endif #ifdef HAVE_LBA48 if (ata_lba48) { ATA_OUT8(ATA_NSECTOR, count >> 8); ATA_OUT8(ATA_NSECTOR, count & 0xff); ATA_OUT8(ATA_SECTOR, (start >> 24) & 0xff); /* 31:24 */ ATA_OUT8(ATA_SECTOR, start & 0xff); /* 7:0 */ ATA_OUT8(ATA_LCYL, (start >> 32) & 0xff); /* 39:32 */ ATA_OUT8(ATA_LCYL, (start >> 8) & 0xff); /* 15:8 */ ATA_OUT8(ATA_HCYL, (start >> 40) & 0xff); /* 47:40 */ ATA_OUT8(ATA_HCYL, (start >> 16) & 0xff); /* 23:16 */ ATA_OUT8(ATA_SELECT, SELECT_LBA | ata_device); #ifdef HAVE_ATA_DMA if (write) ATA_OUT8(ATA_COMMAND, usedma ? CMD_WRITE_DMA_EXT : CMD_WRITE_MULTIPLE_EXT); else ATA_OUT8(ATA_COMMAND, usedma ? CMD_READ_DMA_EXT : CMD_READ_MULTIPLE_EXT); #else ATA_OUT8(ATA_COMMAND, write ? CMD_WRITE_MULTIPLE_EXT : CMD_READ_MULTIPLE_EXT); #endif } else #endif { ATA_OUT8(ATA_NSECTOR, count & 0xff); /* 0 means 256 sectors */ ATA_OUT8(ATA_SECTOR, start & 0xff); ATA_OUT8(ATA_LCYL, (start >> 8) & 0xff); ATA_OUT8(ATA_HCYL, (start >> 16) & 0xff); ATA_OUT8(ATA_SELECT, ((start >> 24) & 0xf) | SELECT_LBA | ata_device); /* LBA28, mask off upper 4 bits of 32-bit sector address */ #ifdef HAVE_ATA_DMA if (write) ATA_OUT8(ATA_COMMAND, usedma ? CMD_WRITE_DMA : CMD_WRITE_MULTIPLE); else ATA_OUT8(ATA_COMMAND, usedma ? CMD_READ_DMA : CMD_READ_MULTIPLE); #else ATA_OUT8(ATA_COMMAND, write ? CMD_WRITE_MULTIPLE : CMD_READ_MULTIPLE); #endif } /* wait at least 400ns between writing command and reading status */ __asm__ volatile ("nop"); __asm__ volatile ("nop"); __asm__ volatile ("nop"); __asm__ volatile ("nop"); __asm__ volatile ("nop"); #ifdef HAVE_ATA_DMA if (usedma) { if (!ata_dma_finish()) ret = -7; if (ret != 0) { perform_soft_reset(); goto retry; } if (ata_state == ATA_SPINUP) { ata_state = ATA_ON; spinup_time = current_tick - spinup_start; } } else #endif /* HAVE_ATA_DMA */ { while (count) { int sectors; int wordcount; int status; int error; if (!wait_for_start_of_transfer()) { /* We have timed out waiting for RDY and/or DRQ, possibly because the hard drive is shaking and has problems reading the data. We have two options: 1) Wait some more 2) Perform a soft reset and try again. We choose alternative 2. */ perform_soft_reset(); ret = -5; goto retry; } if (ata_state == ATA_SPINUP) { ata_state = ATA_ON; spinup_time = current_tick - spinup_start; } /* read the status register exactly once per loop */ status = ATA_IN8(ATA_STATUS); error = ATA_IN8(ATA_ERROR); if (count >= multisectors) sectors = multisectors; else sectors = count; wordcount = sectors * log_sector_size / 2; if (write) copy_write_sectors(buf, wordcount); else copy_read_sectors(buf, wordcount); /* "Device errors encountered during READ MULTIPLE commands are posted at the beginning of the block or partial block transfer, but the DRQ bit is still set to one and the data transfer shall take place, including transfer of corrupted data, if any." -- ATA specification */ if ( status & (STATUS_BSY | STATUS_ERR | STATUS_DF) ) { perform_soft_reset(); ret = -6; /* no point retrying IDNF, sector no. was invalid */ if (error & ERROR_IDNF) break; goto retry; } buf += sectors * log_sector_size; /* Advance one chunk of sectors */ count -= sectors; keep_ata_active(); } } if(!ret && !wait_for_end_of_transfer()) { int error; error = ATA_IN8(ATA_ERROR); perform_soft_reset(); ret = -4; /* no point retrying IDNF, sector no. was invalid */ if (error & ERROR_IDNF) break; goto retry; } break; } error: ata_led(false); if (ret < 0 && ata_state == ATA_SPINUP) { /* bailed out before updating */ ata_state = ATA_ON; } return ret; } #ifndef MAX_PHYS_SECTOR_SIZE int ata_read_sectors(IF_MD(int drive,) sector_t start, int incount, void* inbuf) { #ifdef HAVE_MULTIDRIVE (void)drive; /* unused for now */ #endif mutex_lock(&ata_mutex); int rc = ata_transfer_sectors(start, incount, inbuf, false); mutex_unlock(&ata_mutex); return rc; } int ata_write_sectors(IF_MD(int drive,) sector_t start, int count, const void* buf) { #ifdef HAVE_MULTIDRIVE (void)drive; /* unused for now */ #endif mutex_lock(&ata_mutex); int rc = ata_transfer_sectors(start, count, (void*)buf, true); mutex_unlock(&ata_mutex); return rc; } #endif /* ndef MAX_PHYS_SECTOR_SIZE */ static int STORAGE_INIT_ATTR check_registers(void) { int i; wait_for_bsy(); if (ATA_IN8(ATA_STATUS) & STATUS_BSY) return -1; for (i = 0; i<64; i++) { ATA_OUT8(ATA_NSECTOR, TEST_PATTERN1); ATA_OUT8(ATA_SECTOR, TEST_PATTERN2); ATA_OUT8(ATA_LCYL, TEST_PATTERN3); ATA_OUT8(ATA_HCYL, TEST_PATTERN4); if (((ATA_IN8(ATA_NSECTOR) & 0xff) == TEST_PATTERN1) && ((ATA_IN8(ATA_SECTOR) & 0xff) == TEST_PATTERN2) && ((ATA_IN8(ATA_LCYL) & 0xff) == TEST_PATTERN3) && ((ATA_IN8(ATA_HCYL) & 0xff) == TEST_PATTERN4)) return 0; sleep(1); } return -2; } static int freeze_lock(void) { /* does the disk support Security Mode feature set? */ if (identify_info[82] & 2) { ATA_OUT8(ATA_SELECT, ata_device); if (!wait_for_rdy()) return -1; ATA_OUT8(ATA_COMMAND, CMD_SECURITY_FREEZE_LOCK); if (!wait_for_rdy()) return -2; } return 0; } void ata_spindown(int seconds) { sleep_timeout = seconds * HZ; } bool ata_disk_is_active(void) { return (ata_state >= ATA_SPINUP); } void ata_sleepnow(void) { if (ata_state >= ATA_SPINUP) { logf("ata SLEEPNOW %ld", current_tick); mutex_lock(&ata_mutex); if (ata_state == ATA_ON) { if (!ata_perform_flush_cache() && !ata_perform_sleep()) { ata_state = ATA_SLEEPING; #ifdef HAVE_ATA_POWER_OFF if (ata_disk_can_sleep() || canflush) { power_off_tick = current_tick + ATA_POWER_OFF_TIMEOUT; } #endif } } mutex_unlock(&ata_mutex); } } void ata_spin(void) { keep_ata_active(); } /* Hardware reset protocol as specified in chapter 9.1, ATA spec draft v5 */ #ifdef HAVE_ATA_POWER_OFF static int ata_hard_reset(void) #else static int STORAGE_INIT_ATTR ata_hard_reset(void) #endif { int ret; mutex_lock(&ata_mutex); ata_reset(); /* state HRR2 */ ATA_OUT8(ATA_SELECT, ata_device); /* select the right device */ ret = wait_for_bsy(); /* Massage the return code so it is 0 on success and -1 on failure */ ret = ret?0:-1; mutex_unlock(&ata_mutex); return ret; } #ifdef HAVE_ATA_SMART static int ata_smart(uint16_t *buf, uint8_t cmd) { int i; ATA_OUT8(ATA_SELECT, ata_device); if(!wait_for_rdy()) { DEBUGF("identify() - not RDY\n"); return -1; } ATA_OUT8(ATA_FEATURE, cmd); ATA_OUT8(ATA_HCYL, 0xc2); ATA_OUT8(ATA_LCYL, 0x4f); ATA_OUT8(ATA_SELECT, SELECT_LBA | ata_device); ATA_OUT8(ATA_COMMAND, CMD_SMART); if (!wait_for_start_of_transfer()) { DEBUGF("identify() - CMD failed\n"); return -2; } for (i = 0 ; i < 256 ; i++) { /* The SMART words are already swapped, so we need to treat this info differently that normal sector data */ buf[i] = ATA_SWAP_IDENTIFY(ATA_IN16(ATA_DATA)); } return 0; } int ata_read_smart(struct ata_smart_values* smart_data, uint8_t cmd) { mutex_lock(&ata_mutex); int rc = ata_smart((uint16_t*)smart_data, cmd); mutex_unlock(&ata_mutex); return rc; } #endif /* HAVE_ATA_SMART */ // not putting this into STORAGE_INIT_ATTR, as ATA spec recommends to // re-read identify_info after soft reset. So we'll do that. static int identify(void) { int i; ATA_OUT8(ATA_SELECT, ata_device); if(!wait_for_rdy()) { DEBUGF("identify() - not RDY\n"); return -1; } ATA_OUT8(ATA_COMMAND, CMD_IDENTIFY); if (!wait_for_start_of_transfer()) { DEBUGF("identify() - CMD failed\n"); return -2; } for (i=0; i Flash interface automatically sleeps almost immediately after the * last command. */ int ret; int retry_count; logf("ata SOFT RESET %ld", current_tick); ATA_OUT8(ATA_SELECT, SELECT_LBA | ata_device ); ATA_OUT8(ATA_CONTROL, CONTROL_nIEN|CONTROL_SRST ); sleep(1); /* >= 5us */ #ifdef HAVE_ATA_DMA /* DMA requires INTRQ be enabled */ ATA_OUT8(ATA_CONTROL, 0); #else ATA_OUT8(ATA_CONTROL, CONTROL_nIEN); #endif sleep(1); /* >2ms */ /* This little sucker can take up to 30 seconds */ retry_count = 8; do { ret = wait_for_rdy(); } while(!ret && retry_count--); if (!ret) return -1; if (identify()) return -5; if ((ret = set_features())) return -60 + ret; if (set_multiple_mode(multisectors)) return -3; if (identify()) return -2; if (freeze_lock()) return -4; return 0; } int ata_soft_reset(void) { int ret = -6; mutex_lock(&ata_mutex); if (ata_state > ATA_OFF) { ret = perform_soft_reset(); } mutex_unlock(&ata_mutex); return ret; } #ifdef HAVE_ATA_POWER_OFF static int ata_power_on(void) { int rc; logf("ata ON %ld", current_tick); ide_power_enable(true); sleep(HZ/4); /* allow voltage to build up */ /* Accessing the PP IDE controller too early after powering up the disk * makes the core hang for a short time, causing an audio dropout. This * also depends on the disk; iPod Mini G2 needs at least HZ/5 to get rid * of the dropout. Since this time isn't additive (the wait_for_bsy() in * ata_hard_reset() will shortened by the same amount), it's a good idea * to do this on all HDD based targets. */ if( ata_hard_reset() ) return -1; if (identify()) return -5; rc = set_features(); if (rc) return -60 + rc; if (set_multiple_mode(multisectors)) return -3; if (identify()) return -2; if (freeze_lock()) return -4; return 0; } #endif /* HAVE_ATA_POWER_OFF */ static int STORAGE_INIT_ATTR master_slave_detect(void) { /* master? */ ATA_OUT8(ATA_SELECT, 0); if (ATA_IN8(ATA_STATUS) & (STATUS_RDY|STATUS_BSY)) { ata_device = 0; DEBUGF("Found master harddisk\n"); } else { /* slave? */ ATA_OUT8(ATA_SELECT, SELECT_DEVICE1); if (ATA_IN8(ATA_STATUS) & (STATUS_RDY|STATUS_BSY)) { ata_device = SELECT_DEVICE1; DEBUGF("Found slave harddisk\n"); } else return -1; } return 0; } static int set_multiple_mode(int sectors) { ATA_OUT8(ATA_SELECT, ata_device); if(!wait_for_rdy()) { DEBUGF("set_multiple_mode() - not RDY\n"); return -1; } ATA_OUT8(ATA_NSECTOR, sectors); ATA_OUT8(ATA_COMMAND, CMD_SET_MULTIPLE_MODE); if (!wait_for_rdy()) { DEBUGF("set_multiple_mode() - CMD failed\n"); return -2; } return 0; } #ifdef HAVE_ATA_DMA static int ata_get_best_mode(unsigned short identword, int max, int modetype) { unsigned short testbit = BIT_N(max); while (1) { if (identword & testbit) return max | modetype; testbit >>= 1; if (!testbit) return 0; max--; } } #endif static int set_features(void) { static struct { unsigned char id_word; unsigned char id_bit; unsigned char subcommand; unsigned char parameter; } features[] = { { 83, 14, 0x03, 0 }, /* force PIO mode by default */ #ifdef HAVE_ATA_DMA { 0, 0, 0x03, 0 }, /* DMA mode */ #endif /* NOTE: Above two MUST come first! */ { 83, 3, 0x05, 0x80 }, /* adv. power management: lowest w/o standby */ { 83, 9, 0x42, 0x80 }, /* acoustic management: lowest noise */ { 82, 5, 0x02, 0 }, /* enable volatile write cache */ { 82, 6, 0xaa, 0 }, /* enable read look-ahead */ }; int i; int pio_mode = 2; /* Lowest */ /* Find out the highest supported PIO mode */ if (identify_info[53] & (1<<1)) { /* Is word 64 valid? */ if (identify_info[64] & 2) pio_mode = 4; else if(identify_info[64] & 1) pio_mode = 3; } /* Update the table: set highest supported pio mode that we also support */ features[0].parameter = 8 + pio_mode; #ifdef HAVE_ATA_DMA if (identify_info[53] & (1<<2)) { int max_udma = ATA_MAX_UDMA; #if ATA_MAX_UDMA > 2 if (!identify_info[76] && !(identify_info[93] & (1<<13))) /* w93b13 is only valid for PATA, w76 is 0 PATA */ max_udma = 2; #endif /* Ultra DMA mode info present, find a mode */ dma_mode = ata_get_best_mode(identify_info[88], max_udma, 0x40); } if (!dma_mode) { /* No UDMA mode found, try to find a multi-word DMA mode */ dma_mode = ata_get_best_mode(identify_info[63], ATA_MAX_MWDMA, 0x20); features[1].id_word = 63; } else { features[1].id_word = 88; } features[1].id_bit = dma_mode & 7; features[1].parameter = dma_mode; #endif /* HAVE_ATA_DMA */ ATA_OUT8(ATA_SELECT, ata_device); if (!wait_for_rdy()) { DEBUGF("set_features() - not RDY\n"); return -1; } for (i=0; i < (int)(sizeof(features)/sizeof(features[0])); i++) { if (identify_info[features[i].id_word] & BIT_N(features[i].id_bit)) { ATA_OUT8(ATA_FEATURE, features[i].subcommand); ATA_OUT8(ATA_NSECTOR, features[i].parameter); ATA_OUT8(ATA_COMMAND, CMD_SET_FEATURES); if (!wait_for_rdy()) { DEBUGF("set_features() - CMD failed\n"); return -10 - i; } if((ATA_IN8(ATA_ALT_STATUS) & STATUS_ERR) && (features[i].subcommand != 0x05)) { /* some CF cards don't like advanced powermanagement even if they mark it as supported - go figure... */ if(ATA_IN8(ATA_ERROR) & ERROR_ABRT) { return -20 - i; } } } } #ifdef ATA_SET_PIO_TIMING ata_set_pio_timings(pio_mode); #endif #ifdef HAVE_ATA_DMA ata_dma_set_mode(dma_mode); #endif return 0; } unsigned short* ata_get_identify(void) { return identify_info; } static int STORAGE_INIT_ATTR init_and_check(bool hard_reset) { int rc; if (hard_reset) { /* This should reset both master and slave, we don't yet know what's in */ ata_device = 0; if (ata_hard_reset()) return -1; } rc = master_slave_detect(); if (rc) return -10 + rc; /* symptom fix: else check_registers() below may fail */ if (hard_reset && !wait_for_bsy()) return -20; rc = check_registers(); if (rc) return -30 + rc; return 0; } int STORAGE_INIT_ATTR ata_init(void) { int rc = 0; bool coldstart; if (ata_state == ATA_BOOT) { mutex_init(&ata_mutex); } mutex_lock(&ata_mutex); /* must be called before ata_device_init() */ coldstart = ata_is_coldstart(); ata_led(false); ata_device_init(); ata_enable(true); if (ata_state == ATA_BOOT) { ata_state = ATA_OFF; if (!ide_powered()) /* somebody has switched it off */ { ide_power_enable(true); sleep(HZ/4); /* allow voltage to build up */ } #ifdef HAVE_ATA_DMA /* DMA requires INTRQ be enabled */ ATA_OUT8(ATA_CONTROL, 0); #endif /* first try, hard reset at cold start only */ rc = init_and_check(coldstart); if (rc) { /* failed? -> second try, always with hard reset */ DEBUGF("ata: init failed, retrying...\n"); rc = init_and_check(true); if (rc) { goto error; } } rc = identify(); if (rc) { rc = -40 + rc; goto error; } multisectors = identify_info[47] & 0xff; if (!multisectors && (identify_info[59] & 0x100) == 0x100) multisectors = identify_info[59] & 0xff; if (!multisectors) multisectors = 1; /* One transfer per REQ */ DEBUGF("ata: max %d sectors per DRQ\n", multisectors); total_sectors = (identify_info[61] << 16) | identify_info[60]; #ifdef HAVE_LBA48 if (identify_info[83] & 0x0400 && total_sectors == 0x0FFFFFFF) { total_sectors = ((uint64_t)identify_info[103] << 48) | ((uint64_t)identify_info[102] << 32) | ((uint64_t)identify_info[101] << 16) | identify_info[100]; ata_lba48 = true; /* use BigLBA */ } #endif /* HAVE_LBA48 */ /* Logical sector size > 512B ? */ if ((identify_info[106] & 0xd000) == 0x5000) /* B14, B12 */ log_sector_size = (identify_info[117] | (identify_info[118] << 16)) * 2; else log_sector_size = 512; rc = freeze_lock(); if (rc) { rc = -50 + rc; goto error; } rc = set_features(); // error codes are between -1 and -49 if (rc) { rc = -60 + rc; goto error; } #ifdef MAX_PHYS_SECTOR_SIZE rc = ata_get_phys_sector_mult(); if (rc) { rc = -70 + rc; goto error; } #endif ata_state = ATA_ON; keep_ata_active(); } rc = set_multiple_mode(multisectors); if (rc) rc = -100 + rc; rc = identify(); if (rc) { rc = -40 + rc; goto error; } error: mutex_unlock(&ata_mutex); return rc; } #if (CONFIG_LED == LED_REAL) void ata_set_led_enabled(bool enabled) { ata_led_enabled = enabled; if (ata_led_enabled) led(ata_led_on); else led(false); } #endif long ata_last_disk_activity(void) { return last_disk_activity; } #ifdef HAVE_ATA_DMA /* Returns last DMA mode as set by set_features() */ int ata_get_dma_mode(void) { return dma_mode; } /* Needed to allow updating while waiting for DMA to complete */ void ata_keep_active(void) __attribute__((alias("ata_spin"))); #endif #ifdef CONFIG_STORAGE_MULTI int ata_num_drives(int first_drive) { /* We don't care which logical drive number(s) we have been assigned */ (void)first_drive; return 1; } #endif int ata_event(long id, intptr_t data) { int rc = 0; /* GCC does a lousy job culling unreachable cases in the default handler if statements are in a switch statement, so we'll do it this way. Only the first case is frequently hit anyway. */ if (LIKELY(id == Q_STORAGE_TICK)) { /* won't see ATA_BOOT in here */ if (ata_state != ATA_ON || !ata_sleep_timed_out()) { #ifdef HAVE_ATA_POWER_OFF if (ata_state == ATA_SLEEPING && ata_power_off_timed_out()) { power_off_tick = 0; mutex_lock(&ata_mutex); logf("ata OFF %ld", current_tick); ide_power_enable(false); ata_state = ATA_OFF; mutex_unlock(&ata_mutex); } #endif STG_EVENT_ASSERT_ACTIVE(STORAGE_ATA); } } else if (id == Q_STORAGE_SLEEPNOW) { ata_sleepnow(); } else if (id == Q_STORAGE_SLEEP) { last_disk_activity = current_tick - sleep_timeout + HZ / 5; } #ifndef USB_NONE else if (id == SYS_USB_CONNECTED) { logf("deq USB %ld", current_tick); if (ATA_ACTIVE_IN_USB) { /* There is no need to force ATA power on */ STG_EVENT_ASSERT_ACTIVE(STORAGE_ATA); } else { mutex_lock(&ata_mutex); if (ata_state < ATA_ON) { ata_led(true); if (!(rc = ata_perform_wakeup(ata_state))) { ata_state = ATA_ON; } ata_led(false); } mutex_unlock(&ata_mutex); } } #endif /* ndef USB_NONE */ else { rc = storage_event_default_handler(id, data, last_disk_activity, STORAGE_ATA); } return rc; }