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rockbox/firmware/target/arm/s5l8702/ipod6g/storage_ata-6g.c

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2007 Dave Chapman
*
* 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.
*
****************************************************************************/
#include "config.h"
#include "storage.h"
#include "timer.h"
#include "kernel.h"
#include "string.h"
#include "power.h"
#include "panic.h"
#include "mmu-arm.h"
#include "mmcdefs-target.h"
#include "s5l8702.h"
#include "led.h"
#ifndef ATA_RETRIES
#define ATA_RETRIES 3
#endif
#define CEATA_POWERUP_TIMEOUT 20000000
#define CEATA_COMMAND_TIMEOUT 1000000
#define CEATA_DAT_NONBUSY_TIMEOUT 5000000
#define CEATA_MMC_RCA 1
/** static, private data **/
static uint8_t ceata_taskfile[16] STORAGE_ALIGN_ATTR;
static uint16_t ata_identify_data[0x100] STORAGE_ALIGN_ATTR;
static bool ceata;
static bool ata_lba48;
static bool ata_dma;
static uint64_t ata_total_sectors;
static struct mutex ata_mutex;
static struct semaphore ata_wakeup;
static uint32_t ata_dma_flags;
static long ata_last_activity_value = -1;
static long ata_sleep_timeout = 20 * HZ;
static bool ata_powered;
static const int ata_retries = ATA_RETRIES;
static const bool ata_error_srst = true;
static struct semaphore mmc_wakeup;
static struct semaphore mmc_comp_wakeup;
static int spinup_time = 0;
static int dma_mode = 0;
static char aligned_buffer[SECTOR_SIZE] STORAGE_ALIGN_ATTR;
static int ata_reset(void);
static uint16_t ata_read_cbr(uint32_t volatile* reg)
{
while (!(ATA_PIO_READY & 2));
volatile uint32_t dummy __attribute__((unused)) = *reg;
while (!(ATA_PIO_READY & 1));
return ATA_PIO_RDATA;
}
static void ata_write_cbr(uint32_t volatile* reg, uint16_t data)
{
while (!(ATA_PIO_READY & 2));
*reg = data;
}
static int ata_wait_for_not_bsy(long timeout)
{
long startusec = USEC_TIMER;
while (true)
{
uint8_t csd = ata_read_cbr(&ATA_PIO_CSD);
if (!(csd & BIT(7))) return 0;
if (TIMEOUT_EXPIRED(startusec, timeout)) RET_ERR(0);
yield();
}
}
static int ata_wait_for_rdy(long timeout)
{
long startusec = USEC_TIMER;
PASS_RC(ata_wait_for_not_bsy(timeout), 1, 0);
while (true)
{
uint8_t dad = ata_read_cbr(&ATA_PIO_DAD);
if (dad & BIT(6)) return 0;
if (TIMEOUT_EXPIRED(startusec, timeout)) RET_ERR(1);
yield();
}
}
static int ata_wait_for_start_of_transfer(long timeout)
{
long startusec = USEC_TIMER;
PASS_RC(ata_wait_for_not_bsy(timeout), 2, 0);
while (true)
{
uint8_t dad = ata_read_cbr(&ATA_PIO_DAD);
if (dad & BIT(0)) RET_ERR(1);
if ((dad & (BIT(7) | BIT(3))) == BIT(3)) return 0;
if (TIMEOUT_EXPIRED(startusec, timeout)) RET_ERR(2);
yield();
}
}
static int ata_wait_for_end_of_transfer(long timeout)
{
PASS_RC(ata_wait_for_not_bsy(timeout), 2, 0);
uint8_t dad = ata_read_cbr(&ATA_PIO_DAD);
if (dad & BIT(0)) RET_ERR(1);
if ((dad & (BIT(3) | BITRANGE(5, 7))) == BIT(6)) return 0;
RET_ERR(2);
}
static int mmc_dsta_check_command_success(bool disable_crc)
{
int rc = 0;
uint32_t dsta = SDCI_DSTA;
if (dsta & SDCI_DSTA_RESTOUTE) rc |= 1;
if (dsta & SDCI_DSTA_RESENDE) rc |= 2;
if (dsta & SDCI_DSTA_RESINDE) rc |= 4;
if (!disable_crc)
if (dsta & SDCI_DSTA_RESCRCE)
rc |= 8;
if (rc) RET_ERR(rc);
return 0;
}
static bool mmc_send_command(uint32_t cmd, uint32_t arg, uint32_t* result, int timeout)
{
long starttime = USEC_TIMER;
while ((SDCI_STATE & SDCI_STATE_CMD_STATE_MASK) != SDCI_STATE_CMD_STATE_CMD_IDLE)
{
if (TIMEOUT_EXPIRED(starttime, timeout)) RET_ERR(0);
yield();
}
SDCI_STAC = SDCI_STAC_CLR_CMDEND | SDCI_STAC_CLR_BIT_3
| SDCI_STAC_CLR_RESEND | SDCI_STAC_CLR_DATEND
| SDCI_STAC_CLR_DAT_CRCEND | SDCI_STAC_CLR_CRC_STAEND
| SDCI_STAC_CLR_RESTOUTE | SDCI_STAC_CLR_RESENDE
| SDCI_STAC_CLR_RESINDE | SDCI_STAC_CLR_RESCRCE
| SDCI_STAC_CLR_WR_DATCRCE | SDCI_STAC_CLR_RD_DATCRCE
| SDCI_STAC_CLR_RD_DATENDE0 | SDCI_STAC_CLR_RD_DATENDE1
| SDCI_STAC_CLR_RD_DATENDE2 | SDCI_STAC_CLR_RD_DATENDE3
| SDCI_STAC_CLR_RD_DATENDE4 | SDCI_STAC_CLR_RD_DATENDE5
| SDCI_STAC_CLR_RD_DATENDE6 | SDCI_STAC_CLR_RD_DATENDE7;
SDCI_ARGU = arg;
SDCI_CMD = cmd;
if (!(SDCI_DSTA & SDCI_DSTA_CMDRDY)) RET_ERR(1);
SDCI_CMD = cmd | SDCI_CMD_CMDSTR;
long sleepbase = USEC_TIMER;
while (TIMEOUT_EXPIRED(sleepbase, 1000)) yield();
while (!(SDCI_DSTA & SDCI_DSTA_CMDEND))
{
if (TIMEOUT_EXPIRED(starttime, timeout)) RET_ERR(2);
yield();
}
if ((cmd & SDCI_CMD_RES_TYPE_MASK) != SDCI_CMD_RES_TYPE_NONE)
{
while (!(SDCI_DSTA & SDCI_DSTA_RESEND))
{
if (TIMEOUT_EXPIRED(starttime, timeout)) RET_ERR(3);
yield();
}
if (cmd & SDCI_CMD_RES_BUSY)
while (SDCI_DSTA & SDCI_DSTA_DAT_BUSY)
{
if (TIMEOUT_EXPIRED(starttime, CEATA_DAT_NONBUSY_TIMEOUT)) RET_ERR(4);
yield();
}
}
bool nocrc = (cmd & SDCI_CMD_RES_SIZE_MASK) == SDCI_CMD_RES_SIZE_136;
PASS_RC(mmc_dsta_check_command_success(nocrc), 3, 5);
if (result) *result = SDCI_RESP0;
return 0;
}
static int mmc_get_card_status(uint32_t* result)
{
return mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_SEND_STATUS)
| SDCI_CMD_CMD_TYPE_AC | SDCI_CMD_RES_TYPE_R1
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NCR,
MMC_CMD_SEND_STATUS_RCA(CEATA_MMC_RCA), result, CEATA_COMMAND_TIMEOUT);
}
static int mmc_init(void)
{
sleep(HZ / 10);
PASS_RC(mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_GO_IDLE_STATE)
| SDCI_CMD_CMD_TYPE_BC | SDCI_CMD_RES_TYPE_NONE
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NID,
0, NULL, CEATA_COMMAND_TIMEOUT), 3, 0);
long startusec = USEC_TIMER;
uint32_t result;
do
{
if (TIMEOUT_EXPIRED(startusec, CEATA_POWERUP_TIMEOUT)) RET_ERR(1);
sleep(HZ / 100);
PASS_RC(mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_SEND_OP_COND)
| SDCI_CMD_CMD_TYPE_BCR | SDCI_CMD_RES_TYPE_R3
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NID,
MMC_CMD_SEND_OP_COND_OCR(MMC_OCR_270_360),
NULL, CEATA_COMMAND_TIMEOUT), 3, 2);
result = SDCI_RESP0;
}
while (!(result & MMC_OCR_POWER_UP_DONE));
PASS_RC(mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_ALL_SEND_CID)
| SDCI_CMD_CMD_TYPE_BCR | SDCI_CMD_RES_TYPE_R2
| SDCI_CMD_RES_SIZE_136 | SDCI_CMD_NCR_NID_NID,
0, NULL, CEATA_COMMAND_TIMEOUT), 3, 3);
PASS_RC(mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_SET_RELATIVE_ADDR)
| SDCI_CMD_CMD_TYPE_BCR | SDCI_CMD_RES_TYPE_R1
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NCR,
MMC_CMD_SET_RELATIVE_ADDR_RCA(CEATA_MMC_RCA),
NULL, CEATA_COMMAND_TIMEOUT), 3, 4);
PASS_RC(mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_SELECT_CARD)
| SDCI_CMD_CMD_TYPE_AC | SDCI_CMD_RES_TYPE_R1
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NCR,
MMC_CMD_SELECT_CARD_RCA(CEATA_MMC_RCA),
NULL, CEATA_COMMAND_TIMEOUT), 3, 5);
PASS_RC(mmc_get_card_status(&result), 3, 6);
if ((result & MMC_STATUS_CURRENT_STATE_MASK) != MMC_STATUS_CURRENT_STATE_TRAN) RET_ERR(7);
return 0;
}
static int mmc_fastio_write(uint32_t addr, uint32_t data)
{
return mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_FAST_IO)
| SDCI_CMD_CMD_TYPE_AC | SDCI_CMD_RES_TYPE_R4
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NCR,
MMC_CMD_FAST_IO_RCA(CEATA_MMC_RCA) | MMC_CMD_FAST_IO_DIRECTION_WRITE
| MMC_CMD_FAST_IO_ADDRESS(addr) | MMC_CMD_FAST_IO_DATA(data),
NULL, CEATA_COMMAND_TIMEOUT);
}
static int mmc_fastio_read(uint32_t addr, uint32_t* data)
{
return mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_FAST_IO)
| SDCI_CMD_CMD_TYPE_AC | SDCI_CMD_RES_TYPE_R4
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NCR,
MMC_CMD_FAST_IO_RCA(CEATA_MMC_RCA) | MMC_CMD_FAST_IO_DIRECTION_READ
| MMC_CMD_FAST_IO_ADDRESS(addr), data, CEATA_COMMAND_TIMEOUT);
}
static int ceata_soft_reset(void)
{
PASS_RC(mmc_fastio_write(6, 4), 2, 0);
sleep(HZ / 100);
PASS_RC(mmc_fastio_write(6, 0), 2, 1);
sleep(HZ / 100);
long startusec = USEC_TIMER;
uint32_t status;
do
{
PASS_RC(mmc_fastio_read(0xf, &status), 2, 2);
if (TIMEOUT_EXPIRED(startusec, CEATA_POWERUP_TIMEOUT)) RET_ERR(3);
sleep(HZ / 100);
}
while (status & 0x80);
return 0;
}
static int mmc_dsta_check_data_success(void)
{
int rc = 0;
uint32_t dsta = SDCI_DSTA;
if (dsta & (SDCI_DSTA_WR_DATCRCE | SDCI_DSTA_RD_DATCRCE))
{
if (dsta & SDCI_DSTA_WR_DATCRCE) rc |= 1;
if (dsta & SDCI_DSTA_RD_DATCRCE) rc |= 2;
if ((dsta & SDCI_DSTA_WR_CRC_STATUS_MASK) == SDCI_DSTA_WR_CRC_STATUS_TXERR) rc |= 4;
else if ((dsta & SDCI_DSTA_WR_CRC_STATUS_MASK) == SDCI_DSTA_WR_CRC_STATUS_CARDERR) rc |= 8;
}
if (dsta & (SDCI_DSTA_RD_DATENDE0 | SDCI_DSTA_RD_DATENDE1 | SDCI_DSTA_RD_DATENDE2
| SDCI_DSTA_RD_DATENDE3 | SDCI_DSTA_RD_DATENDE4 | SDCI_DSTA_RD_DATENDE5
| SDCI_DSTA_RD_DATENDE6 | SDCI_DSTA_RD_DATENDE7))
rc |= 16;
if (rc) RET_ERR(rc);
return 0;
}
static void mmc_discard_irq(void)
{
SDCI_IRQ = SDCI_IRQ_DAT_DONE_INT | SDCI_IRQ_MASK_MASK_IOCARD_IRQ_INT
| SDCI_IRQ_MASK_MASK_READ_WAIT_INT;
semaphore_wait(&mmc_wakeup, 0);
}
static int ceata_read_multiple_register(uint32_t addr, void* dest, uint32_t size)
{
if (size > 0x10) RET_ERR(0);
mmc_discard_irq();
SDCI_DMASIZE = size;
SDCI_DMACOUNT = 1;
SDCI_DMAADDR = dest;
SDCI_DCTRL = SDCI_DCTRL_TXFIFORST | SDCI_DCTRL_RXFIFORST;
commit_discard_dcache();
PASS_RC(mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_CEATA_RW_MULTIPLE_REG)
| SDCI_CMD_CMD_TYPE_ADTC | SDCI_CMD_RES_TYPE_R1
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NCR,
MMC_CMD_CEATA_RW_MULTIPLE_REG_DIRECTION_READ
| MMC_CMD_CEATA_RW_MULTIPLE_REG_ADDRESS(addr & 0xfc)
| MMC_CMD_CEATA_RW_MULTIPLE_REG_COUNT(size & 0xfc),
NULL, CEATA_COMMAND_TIMEOUT), 2, 1);
if (semaphore_wait(&mmc_wakeup, CEATA_COMMAND_TIMEOUT * HZ / 1000000)
== OBJ_WAIT_TIMEDOUT) RET_ERR(2);
PASS_RC(mmc_dsta_check_data_success(), 2, 3);
return 0;
}
static int ceata_write_multiple_register(uint32_t addr, void* dest, uint32_t size)
{
uint32_t i;
if (size > 0x10) RET_ERR(0);
mmc_discard_irq();
SDCI_DMASIZE = size;
SDCI_DMACOUNT = 0;
SDCI_DCTRL = SDCI_DCTRL_TXFIFORST | SDCI_DCTRL_RXFIFORST;
PASS_RC(mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_CEATA_RW_MULTIPLE_REG)
| SDCI_CMD_CMD_TYPE_ADTC | SDCI_CMD_CMD_RD_WR
| SDCI_CMD_RES_BUSY | SDCI_CMD_RES_TYPE_R1
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NCR,
MMC_CMD_CEATA_RW_MULTIPLE_REG_DIRECTION_WRITE
| MMC_CMD_CEATA_RW_MULTIPLE_REG_ADDRESS(addr & 0xfc)
| MMC_CMD_CEATA_RW_MULTIPLE_REG_COUNT(size & 0xfc),
NULL, CEATA_COMMAND_TIMEOUT), 3, 1);
SDCI_DCTRL = SDCI_DCTRL_TRCONT_TX;
for (i = 0; i < size / 4; i++) SDCI_DATA = ((uint32_t*)dest)[i];
long startusec = USEC_TIMER;
if (semaphore_wait(&mmc_wakeup, CEATA_COMMAND_TIMEOUT * HZ / 1000000)
== OBJ_WAIT_TIMEDOUT) RET_ERR(2);
while ((SDCI_STATE & SDCI_STATE_DAT_STATE_MASK) != SDCI_STATE_DAT_STATE_IDLE)
{
if (TIMEOUT_EXPIRED(startusec, CEATA_COMMAND_TIMEOUT)) RET_ERR(3);
yield();
}
PASS_RC(mmc_dsta_check_data_success(), 3, 4);
return 0;
}
static int ceata_init(int buswidth)
{
uint32_t result;
PASS_RC(mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_SWITCH) | SDCI_CMD_RES_BUSY
| SDCI_CMD_CMD_TYPE_AC | SDCI_CMD_RES_TYPE_R1
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NCR,
MMC_CMD_SWITCH_ACCESS_WRITE_BYTE
| MMC_CMD_SWITCH_INDEX(MMC_CMD_SWITCH_FIELD_HS_TIMING)
| MMC_CMD_SWITCH_VALUE(MMC_CMD_SWITCH_FIELD_HS_TIMING_HIGH_SPEED),
&result, CEATA_COMMAND_TIMEOUT), 3, 0);
if (result & MMC_STATUS_SWITCH_ERROR) RET_ERR(1);
if (buswidth > 1)
{
int setting;
if (buswidth == 4) setting = MMC_CMD_SWITCH_FIELD_BUS_WIDTH_4BIT;
else if (buswidth == 8) setting = MMC_CMD_SWITCH_FIELD_BUS_WIDTH_8BIT;
else setting = MMC_CMD_SWITCH_FIELD_BUS_WIDTH_1BIT;
PASS_RC(mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_SWITCH) | SDCI_CMD_RES_BUSY
| SDCI_CMD_CMD_TYPE_AC | SDCI_CMD_RES_TYPE_R1
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NCR,
MMC_CMD_SWITCH_ACCESS_WRITE_BYTE
| MMC_CMD_SWITCH_INDEX(MMC_CMD_SWITCH_FIELD_BUS_WIDTH)
| MMC_CMD_SWITCH_VALUE(setting),
&result, CEATA_COMMAND_TIMEOUT), 3, 2);
if (result & MMC_STATUS_SWITCH_ERROR) RET_ERR(3);
if (buswidth == 4)
SDCI_CTRL = (SDCI_CTRL & ~SDCI_CTRL_BUS_WIDTH_MASK) | SDCI_CTRL_BUS_WIDTH_4BIT;
else if (buswidth == 8)
SDCI_CTRL = (SDCI_CTRL & ~SDCI_CTRL_BUS_WIDTH_MASK) | SDCI_CTRL_BUS_WIDTH_8BIT;
}
PASS_RC(ceata_soft_reset(), 3, 4);
PASS_RC(ceata_read_multiple_register(0, ceata_taskfile, 0x10), 3, 5);
if (ceata_taskfile[0xc] != 0xce || ceata_taskfile[0xd] != 0xaa) RET_ERR(6);
PASS_RC(mmc_fastio_write(6, 0), 3, 7);
return 0;
}
static int ceata_check_error(void)
{
uint32_t status, error;
PASS_RC(mmc_fastio_read(0xf, &status), 2, 0);
if (status & 1)
{
PASS_RC(mmc_fastio_read(0x9, &error), 2, 1);
RET_ERR((error << 2) | 2);
}
return 0;
}
static int ceata_wait_idle(void)
{
long startusec = USEC_TIMER;
while (true)
{
uint32_t status;
PASS_RC(mmc_fastio_read(0xf, &status), 1, 0);
if (!(status & 0x88)) return 0;
if (TIMEOUT_EXPIRED(startusec, CEATA_DAT_NONBUSY_TIMEOUT)) RET_ERR(1);
sleep(HZ / 20);
}
}
static int ceata_cancel_command(void)
{
*((uint32_t volatile*)0x3cf00200) = 0x9000e;
udelay(1);
*((uint32_t volatile*)0x3cf00200) = 0x9000f;
udelay(1);
*((uint32_t volatile*)0x3cf00200) = 0x90003;
udelay(1);
PASS_RC(mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_STOP_TRANSMISSION)
| SDCI_CMD_CMD_TYPE_AC | SDCI_CMD_RES_TYPE_R1 | SDCI_CMD_RES_BUSY
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NCR,
0, NULL, CEATA_COMMAND_TIMEOUT), 1, 0);
PASS_RC(ceata_wait_idle(), 1, 1);
return 0;
}
static int ceata_rw_multiple_block(bool write, void* buf, uint32_t count, long timeout)
{
mmc_discard_irq();
uint32_t responsetype;
uint32_t cmdtype;
uint32_t direction;
if (write)
{
cmdtype = SDCI_CMD_CMD_TYPE_ADTC | SDCI_CMD_CMD_RD_WR;
responsetype = SDCI_CMD_RES_TYPE_R1 | SDCI_CMD_RES_BUSY;
direction = MMC_CMD_CEATA_RW_MULTIPLE_BLOCK_DIRECTION_WRITE;
}
else
{
cmdtype = SDCI_CMD_CMD_TYPE_ADTC;
responsetype = SDCI_CMD_RES_TYPE_R1;
direction = MMC_CMD_CEATA_RW_MULTIPLE_BLOCK_DIRECTION_READ;
}
SDCI_DMASIZE = 0x200;
SDCI_DMAADDR = buf;
SDCI_DMACOUNT = count;
SDCI_DCTRL = SDCI_DCTRL_TXFIFORST | SDCI_DCTRL_RXFIFORST;
commit_discard_dcache();
PASS_RC(mmc_send_command(SDCI_CMD_CMD_NUM(MMC_CMD_CEATA_RW_MULTIPLE_BLOCK)
| SDCI_CMD_CMD_TYPE_ADTC | cmdtype | responsetype
| SDCI_CMD_RES_SIZE_48 | SDCI_CMD_NCR_NID_NCR,
direction | MMC_CMD_CEATA_RW_MULTIPLE_BLOCK_COUNT(count),
NULL, CEATA_COMMAND_TIMEOUT), 3, 0);
if (write) SDCI_DCTRL = SDCI_DCTRL_TRCONT_TX;
if (semaphore_wait(&mmc_wakeup, timeout) == OBJ_WAIT_TIMEDOUT)
{
PASS_RC(ceata_cancel_command(), 3, 1);
RET_ERR(2);
}
PASS_RC(mmc_dsta_check_data_success(), 3, 3);
if (semaphore_wait(&mmc_comp_wakeup, timeout) == OBJ_WAIT_TIMEDOUT)
{
PASS_RC(ceata_cancel_command(), 3, 4);
RET_ERR(5);
}
PASS_RC(ceata_check_error(), 3, 6);
return 0;
}
static int ata_identify(uint16_t* buf)
{
int i;
if (ceata)
{
memset(ceata_taskfile, 0, 16);
ceata_taskfile[0xf] = 0xec;
PASS_RC(ceata_wait_idle(), 2, 0);
PASS_RC(ceata_write_multiple_register(0, ceata_taskfile, 16), 2, 1);
PASS_RC(ceata_rw_multiple_block(false, buf, 1, CEATA_COMMAND_TIMEOUT * HZ / 1000000), 2, 2);
}
else
{
PASS_RC(ata_wait_for_not_bsy(10000000), 1, 0);
ata_write_cbr(&ATA_PIO_DVR, 0);
ata_write_cbr(&ATA_PIO_CSD, 0xec);
PASS_RC(ata_wait_for_start_of_transfer(10000000), 1, 1);
for (i = 0; i < 0x100; i++) buf[i] = ata_read_cbr(&ATA_PIO_DTR);
}
return 0;
}
static void ata_set_active(void)
{
ata_last_activity_value = current_tick;
}
bool ata_disk_is_active(void)
{
return ata_powered;
}
static int ata_set_feature(uint32_t feature, uint32_t param)
{
if (ceata)
{
memset(ceata_taskfile, 0, 16);
ceata_taskfile[0x1] = feature;
ceata_taskfile[0x2] = param;
ceata_taskfile[0xf] = 0xef;
PASS_RC(ceata_wait_idle(), 2, 0);
PASS_RC(ceata_write_multiple_register(0, ceata_taskfile, 16), 2, 1);
PASS_RC(ceata_wait_idle(), 2, 2);
}
else
{
PASS_RC(ata_wait_for_rdy(2000000), 2, 0);
ata_write_cbr(&ATA_PIO_DVR, 0);
ata_write_cbr(&ATA_PIO_FED, feature);
ata_write_cbr(&ATA_PIO_SCR, param);
ata_write_cbr(&ATA_PIO_CSD, 0xef);
PASS_RC(ata_wait_for_rdy(2000000), 2, 1);
}
return 0;
}
/*
* ATA_UDMA_TIME register is documented on s3c6400 datasheet, information
* included in s5l8700 datasheet is wrong or not valid for s5l8702.
*
* On Classic (boosted):
* HClk = 108 MHz. -> T = ~9.26 ns.
*
* Configured values (in nanoseconds):
*
* UDMA ATA_UDMA_TIME tACK tRP tSS tDVS tDVH Tcyc WR(MB/s)
* 0 0x4071152 27.8 166.7 55.6 74.1 46.3 120.4 16.6
* 1 0x2050d52 27.8 129.6 55.6 55.6 27.8 83.4 24
* 2 0x2030a52 27.8 101.8 55.6 37 27.8 64.8 30.9
* 3 0x1020a52 27.8 101.8 55.6 27.8 18.5 46.3 43.2
* 4 0x1010a52 27.8 101.8 55.6 18.5 18.5 37 54
*
* Tcyc = tDVS+tDVH
* WR[bytes/s] = 1/Tcyc[s] * 2[bytes]
*/
static int ata_power_up(void)
{
ata_set_active();
ide_power_enable(true);
long spinup_start = current_tick;
if (ceata)
{
ata_lba48 = true;
ata_dma = true;
PCON(8) = 0x33333333;
PCON(9) = 0x00000033;
PCON(11) |= 0xf;
*((uint32_t volatile*)0x38a00000) = 0;
*((uint32_t volatile*)0x38700000) = 0;
PWRCON(0) &= ~(1 << 9);
SDCI_RESET = 0xa5;
sleep(HZ / 100);
*((uint32_t volatile*)0x3cf00380) = 0;
*((uint32_t volatile*)0x3cf0010c) = 0xff;
SDCI_CTRL = SDCI_CTRL_SDCIEN | SDCI_CTRL_CLK_SEL_SDCLK
| SDCI_CTRL_BIT_8 | SDCI_CTRL_BIT_14;
SDCI_CDIV = SDCI_CDIV_CLKDIV(260);
*((uint32_t volatile*)0x3cf00200) = 0xb000f;
SDCI_IRQ_MASK = SDCI_IRQ_MASK_MASK_DAT_DONE_INT | SDCI_IRQ_MASK_MASK_IOCARD_IRQ_INT;
PASS_RC(mmc_init(), 3, 0);
SDCI_CDIV = SDCI_CDIV_CLKDIV(4);
sleep(HZ / 100);
PASS_RC(ceata_init(8), 3, 1);
PASS_RC(ata_identify(ata_identify_data), 3, 2);
dma_mode = 0x44;
}
else
{
PCON(7) = 0x44444444;
PCON(8) = 0x44444444;
PCON(9) = 0x44444444;
PCON(10) = (PCON(10) & ~0xffff) | 0x4444;
PWRCON(0) &= ~(1 << 5);
ATA_CFG = BIT(0);
sleep(HZ / 100);
ATA_CFG = 0;
sleep(HZ / 100);
ATA_SWRST = BIT(0);
sleep(HZ / 100);
ATA_SWRST = 0;
sleep(HZ / 10);
ATA_CONTROL = BIT(0);
sleep(HZ / 5);
ATA_PIO_TIME = 0x191f7;
ATA_PIO_LHR = 0;
ATA_CFG = BIT(6);
while (!(ATA_PIO_READY & BIT(1))) yield();
PASS_RC(ata_identify(ata_identify_data), 3, 3);
uint32_t piotime = 0x11f3;
uint32_t mdmatime = 0x1c175;
uint32_t udmatime = 0x4071152;
uint32_t param = 0;
ata_dma_flags = 0;
ata_lba48 = ata_identify_data[83] & BIT(10) ? true : false;
if (ata_identify_data[53] & BIT(1))
{
if (ata_identify_data[64] & BIT(1)) piotime = 0x2072;
else if (ata_identify_data[64] & BIT(0)) piotime = 0x7083;
}
if (ata_identify_data[63] & BIT(2))
{
mdmatime = 0x5072;
param = 0x22;
}
else if (ata_identify_data[63] & BIT(1))
{
mdmatime = 0x7083;
param = 0x21;
}
if (ata_identify_data[63] & BITRANGE(0, 2))
{
ata_dma_flags = BIT(3) | BIT(10);
param |= 0x20;
}
if (ata_identify_data[53] & BIT(2))
{
if (ata_identify_data[88] & BIT(4))
{
udmatime = 0x1010a52;
param = 0x44;
}
else if (ata_identify_data[88] & BIT(3))
{
udmatime = 0x1020a52;
param = 0x43;
}
else if (ata_identify_data[88] & BIT(2))
{
udmatime = 0x2030a52;
param = 0x42;
}
else if (ata_identify_data[88] & BIT(1))
{
udmatime = 0x2050d52;
param = 0x41;
}
else if (ata_identify_data[88] & BIT(0))
{
param = 0x40;
}
if (ata_identify_data[88] & BITRANGE(0, 4))
{
ata_dma_flags = BIT(2) | BIT(3) | BIT(9) | BIT(10);
}
}
ata_dma = param ? true : false;
dma_mode = param;
PASS_RC(ata_set_feature(0x03, param), 3, 4);
if (ata_identify_data[82] & BIT(5))
PASS_RC(ata_set_feature(0x02, 0), 3, 5);
if (ata_identify_data[82] & BIT(6)) PASS_RC(ata_set_feature(0xaa, 0), 3, 6);
ATA_PIO_TIME = piotime;
ATA_MDMA_TIME = mdmatime;
ATA_UDMA_TIME = udmatime;
}
spinup_time = current_tick - spinup_start;
if (ata_lba48)
ata_total_sectors = ata_identify_data[100]
| (((uint64_t)ata_identify_data[101]) << 16)
| (((uint64_t)ata_identify_data[102]) << 32)
| (((uint64_t)ata_identify_data[103]) << 48);
else ata_total_sectors = ata_identify_data[60] | (((uint32_t)ata_identify_data[61]) << 16);
ata_total_sectors >>= 3;
ata_powered = true;
ata_set_active();
return 0;
}
static void ata_power_down(void)
{
if (!ata_powered) return;
if (ceata)
{
memset(ceata_taskfile, 0, 16);
ceata_taskfile[0xf] = 0xe0;
ceata_wait_idle();
ceata_write_multiple_register(0, ceata_taskfile, 16);
ceata_wait_idle();
sleep(HZ);
PWRCON(0) |= (1 << 9);
}
else
{
ata_wait_for_rdy(1000000);
ata_write_cbr(&ATA_PIO_DVR, 0);
ata_write_cbr(&ATA_PIO_CSD, 0xe0);
ata_wait_for_rdy(1000000);
sleep(HZ / 30);
ATA_CONTROL = 0;
while (!(ATA_CONTROL & BIT(1))) yield();
PWRCON(0) |= (1 << 5);
}
PCON(7) = 0;
PCON(8) = 0;
PCON(9) = 0;
PCON(10) &= ~0xffff;
PCON(11) &= ~0xf;
ide_power_enable(false);
ata_powered = false;
}
static int ata_rw_chunk_internal(uint64_t sector, uint32_t cnt, void* buffer, bool write)
{
if (ceata)
{
memset(ceata_taskfile, 0, 16);
ceata_taskfile[0x2] = cnt >> 5;
ceata_taskfile[0x3] = sector >> 21;
ceata_taskfile[0x4] = sector >> 29;
ceata_taskfile[0x5] = sector >> 37;
ceata_taskfile[0xa] = cnt << 3;
ceata_taskfile[0xb] = sector << 3;
ceata_taskfile[0xc] = sector >> 5;
ceata_taskfile[0xd] = sector >> 13;
ceata_taskfile[0xf] = write ? 0x35 : 0x25;
PASS_RC(ceata_wait_idle(), 2, 0);
PASS_RC(ceata_write_multiple_register(0, ceata_taskfile, 16), 2, 1);
PASS_RC(ceata_rw_multiple_block(write, buffer, cnt << 3, CEATA_COMMAND_TIMEOUT * HZ / 1000000), 2, 2);
}
else
{
PASS_RC(ata_wait_for_rdy(100000), 2, 0);
ata_write_cbr(&ATA_PIO_DVR, 0);
if (ata_lba48)
{
ata_write_cbr(&ATA_PIO_SCR, cnt >> 5);
ata_write_cbr(&ATA_PIO_SCR, (cnt << 3) & 0xff);
ata_write_cbr(&ATA_PIO_LHR, (sector >> 37) & 0xff);
ata_write_cbr(&ATA_PIO_LMR, (sector >> 29) & 0xff);
ata_write_cbr(&ATA_PIO_LLR, (sector >> 21) & 0xff);
ata_write_cbr(&ATA_PIO_LHR, (sector >> 13) & 0xff);
ata_write_cbr(&ATA_PIO_LMR, (sector >> 5) & 0xff);
ata_write_cbr(&ATA_PIO_LLR, (sector << 3) & 0xff);
ata_write_cbr(&ATA_PIO_DVR, BIT(6));
if (write) ata_write_cbr(&ATA_PIO_CSD, ata_dma ? 0x35 : 0x39);
else ata_write_cbr(&ATA_PIO_CSD, ata_dma ? 0x25 : 0x29);
}
else
{
ata_write_cbr(&ATA_PIO_SCR, (cnt << 3) & 0xff);
ata_write_cbr(&ATA_PIO_LHR, (sector >> 13) & 0xff);
ata_write_cbr(&ATA_PIO_LMR, (sector >> 5) & 0xff);
ata_write_cbr(&ATA_PIO_LLR, (sector << 3) & 0xff);
ata_write_cbr(&ATA_PIO_DVR, BIT(6) | ((sector >> 21) & 0xf));
if (write) ata_write_cbr(&ATA_PIO_CSD, ata_dma ? 0xca : 0x30);
else ata_write_cbr(&ATA_PIO_CSD, ata_dma ? 0xc8 : 0xc4);
}
if (ata_dma)
{
PASS_RC(ata_wait_for_start_of_transfer(500000), 2, 1);
if (write)
{
ATA_SBUF_START = buffer;
ATA_SBUF_SIZE = SECTOR_SIZE * cnt;
ATA_CFG |= BIT(4);
}
else
{
ATA_TBUF_START = buffer;
ATA_TBUF_SIZE = SECTOR_SIZE * cnt;
ATA_CFG &= ~BIT(4);
}
ATA_XFR_NUM = SECTOR_SIZE * cnt - 1;
ATA_CFG |= ata_dma_flags;
ATA_CFG &= ~(BIT(7) | BIT(8));
semaphore_wait(&ata_wakeup, 0);
ATA_IRQ = BITRANGE(0, 4);
ATA_IRQ_MASK = BIT(0);
ATA_COMMAND = BIT(0);
if (semaphore_wait(&ata_wakeup, 500000 * HZ / 1000000)
== OBJ_WAIT_TIMEDOUT)
{
ATA_COMMAND = BIT(1);
ATA_CFG &= ~(BITRANGE(2, 3) | BIT(12));
RET_ERR(2);
}
ATA_COMMAND = BIT(1);
ATA_CFG &= ~(BITRANGE(2, 3) | BIT(12));
}
else
{
cnt *= SECTOR_SIZE / 512;
while (cnt--)
{
int i;
PASS_RC(ata_wait_for_start_of_transfer(500000), 2, 1);
if (write)
for (i = 0; i < 256; i++)
ata_write_cbr(&ATA_PIO_DTR, ((uint16_t*)buffer)[i]);
else
for (i = 0; i < 256; i++)
((uint16_t*)buffer)[i] = ata_read_cbr(&ATA_PIO_DTR);
buffer += 512;
}
}
PASS_RC(ata_wait_for_end_of_transfer(100000), 2, 3);
}
return 0;
}
static int ata_rw_chunk(uint64_t sector, uint32_t cnt, void* buffer, bool write)
{
led(true);
int rc = ata_rw_chunk_internal(sector, cnt, buffer, write);
led(false);
return rc;
}
static int ata_rw_sectors(uint64_t sector, uint32_t count, void* buffer, bool write)
{
if (STORAGE_OVERLAP((uint32_t)buffer))
{
while (count)
{
if (write)
memcpy(aligned_buffer, buffer, SECTOR_SIZE);
PASS_RC(ata_rw_sectors(sector, 1, aligned_buffer, write), 0, 0);
if (!write)
memcpy(buffer, aligned_buffer, SECTOR_SIZE);
buffer += SECTOR_SIZE;
sector++;
count--;
}
return 0;
}
if (!ata_powered) ata_power_up();
if (sector + count > ata_total_sectors) RET_ERR(0);
ata_set_active();
if (ata_dma && write) commit_dcache();
else if (ata_dma) commit_discard_dcache();
if (!ceata) ATA_COMMAND = BIT(1);
while (count)
{
uint32_t cnt = MIN(ata_lba48 ? 8192 : 32, count);
int rc = -1;
rc = ata_rw_chunk(sector, cnt, buffer, write);
if (rc && ata_error_srst) ata_reset();
if (rc && ata_retries)
{
void* buf = buffer;
uint64_t sect;
for (sect = sector; sect < sector + cnt; sect++)
{
rc = -1;
int tries = ata_retries;
while (tries-- && rc)
{
rc = ata_rw_chunk(sect, 1, buf, write);
if (rc && ata_error_srst) ata_reset();
}
if (rc) break;
buf += SECTOR_SIZE;
}
}
PASS_RC(rc, 1, 1);
buffer += SECTOR_SIZE * cnt;
sector += cnt;
count -= cnt;
}
ata_set_active();
return 0;
}
/* API Functions */
int ata_soft_reset(void)
{
int rc;
mutex_lock(&ata_mutex);
if (!ata_powered) PASS_RC(ata_power_up(), 1, 0);
ata_set_active();
if (ceata) rc = ceata_soft_reset();
else
{
ata_write_cbr(&ATA_PIO_DAD, BIT(1) | BIT(2));
udelay(10);
ata_write_cbr(&ATA_PIO_DAD, 0);
rc = ata_wait_for_rdy(3000000);
}
ata_set_active();
mutex_unlock(&ata_mutex);
PASS_RC(rc, 1, 1);
return 0;
}
int ata_hard_reset(void)
{
mutex_lock(&ata_mutex);
PASS_RC(ata_power_up(), 0, 0);
ata_set_active();
mutex_unlock(&ata_mutex);
return 0;
}
static int ata_reset(void)
{
int rc;
mutex_lock(&ata_mutex);
if (!ata_powered) PASS_RC(ata_power_up(), 2, 0);
ata_set_active();
rc = ata_soft_reset();
if (IS_ERR(rc))
{
rc = ata_hard_reset();
if (IS_ERR(rc))
{
rc = ERR_RC((rc << 2) | 1);
ata_power_down();
sleep(HZ * 3);
int rc2 = ata_power_up();
if (IS_ERR(rc2)) rc = ERR_RC((rc << 2) | 2);
}
else rc = 1;
}
ata_set_active();
mutex_unlock(&ata_mutex);
return rc;
}
int ata_read_sectors(IF_MD(int drive,) unsigned long start, int incount,
void* inbuf)
{
mutex_lock(&ata_mutex);
int rc = ata_rw_sectors(start, incount, inbuf, false);
mutex_unlock(&ata_mutex);
return rc;
}
int ata_write_sectors(IF_MD(int drive,) unsigned long start, int count,
const void* outbuf)
{
mutex_lock(&ata_mutex);
int rc = ata_rw_sectors(start, count, (void*)((uint32_t)outbuf), true);
mutex_unlock(&ata_mutex);
return rc;
}
void ata_spindown(int seconds)
{
ata_sleep_timeout = seconds * HZ;
}
void ata_sleepnow(void)
{
mutex_lock(&ata_mutex);
ata_power_down();
mutex_unlock(&ata_mutex);
}
void ata_spin(void)
{
ata_set_active();
}
void ata_get_info(IF_MD(int drive,) struct storage_info *info)
{
(*info).sector_size = SECTOR_SIZE;
(*info).num_sectors = ata_total_sectors;
(*info).vendor = "Apple";
(*info).product = "iPod Classic";
(*info).revision = "1.0";
}
long ata_last_disk_activity(void)
{
return ata_last_activity_value;
}
int ata_init(void)
{
mutex_init(&ata_mutex);
semaphore_init(&ata_wakeup, 1, 0);
semaphore_init(&mmc_wakeup, 1, 0);
semaphore_init(&mmc_comp_wakeup, 1, 0);
ceata = PDAT(11) & BIT(1);
ata_powered = false;
ata_total_sectors = 0;
/* get ata_identify_data */
mutex_lock(&ata_mutex);
int rc = ata_power_up();
mutex_unlock(&ata_mutex);
if (IS_ERR(rc)) return rc;
return 0;
}
#ifdef HAVE_ATA_SMART
static int ata_smart(uint16_t* buf)
{
if (!ata_powered) PASS_RC(ata_power_up(), 3, 0);
if (ceata)
{
memset(ceata_taskfile, 0, 16);
ceata_taskfile[0xc] = 0x4f;
ceata_taskfile[0xd] = 0xc2;
ceata_taskfile[0xe] = BIT(6);
ceata_taskfile[0xf] = 0xb0;
PASS_RC(ceata_wait_idle(), 3, 1);
if (((uint8_t*)ata_identify_data)[54] != 'A') /* Model != aAmsung */
{
ceata_taskfile[0x9] = 0xd8; /* SMART enable operations */
PASS_RC(ceata_write_multiple_register(0, ceata_taskfile, 16), 3, 2);
PASS_RC(ceata_check_error(), 3, 3);
}
ceata_taskfile[0x9] = 0xd0; /* SMART read data */
PASS_RC(ceata_write_multiple_register(0, ceata_taskfile, 16), 3, 4);
PASS_RC(ceata_rw_multiple_block(false, buf, 1, CEATA_COMMAND_TIMEOUT * HZ / 1000000), 3, 5);
}
else
{
int i;
PASS_RC(ata_wait_for_not_bsy(10000000), 3, 6);
ata_write_cbr(&ATA_PIO_FED, 0xd0);
ata_write_cbr(&ATA_PIO_LMR, 0x4f);
ata_write_cbr(&ATA_PIO_LHR, 0xc2);
ata_write_cbr(&ATA_PIO_DVR, BIT(6));
ata_write_cbr(&ATA_PIO_CSD, 0xb0);
PASS_RC(ata_wait_for_start_of_transfer(10000000), 3, 7);
for (i = 0; i < 0x100; i++) buf[i] = ata_read_cbr(&ATA_PIO_DTR);
}
ata_set_active();
return 0;
}
int ata_read_smart(struct ata_smart_values* smart_data)
{
mutex_lock(&ata_mutex);
int rc = ata_smart((uint16_t*)smart_data);
mutex_unlock(&ata_mutex);
return rc;
}
#endif /* HAVE_ATA_SMART */
#ifdef CONFIG_STORAGE_MULTI
static 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
unsigned short* ata_get_identify(void)
{
return ata_identify_data;
}
int ata_spinup_time(void)
{
return spinup_time;
}
int ata_get_dma_mode(void)
{
return dma_mode;
}
void INT_ATA(void)
{
uint32_t ata_irq = ATA_IRQ;
ATA_IRQ = ata_irq;
if (ata_irq & ATA_IRQ_MASK) semaphore_release(&ata_wakeup);
ATA_IRQ_MASK = 0;
}
void INT_MMC(void)
{
uint32_t irq = SDCI_IRQ;
if (irq & SDCI_IRQ_DAT_DONE_INT) semaphore_release(&mmc_wakeup);
if (irq & SDCI_IRQ_IOCARD_IRQ_INT) semaphore_release(&mmc_comp_wakeup);
SDCI_IRQ = irq;
}
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))
{
if (!ata_powered ||
TIME_BEFORE(current_tick, ata_last_activity_value + ata_sleep_timeout))
{
STG_EVENT_ASSERT_ACTIVE(STORAGE_ATA);
}
}
else if (id == Q_STORAGE_SLEEPNOW)
{
ata_sleepnow();
}
else if (id == Q_STORAGE_SLEEP)
{
ata_last_activity_value = current_tick - ata_sleep_timeout + HZ / 5;
}
else if (id == SYS_USB_CONNECTED)
{
STG_EVENT_ASSERT_ACTIVE(STORAGE_ATA);
}
else
{
rc = storage_event_default_handler(id, data, ata_last_activity_value,
STORAGE_ATA);
}
return rc;
}
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