77603c344d
Modify count, buffer and start address only after successful transfer. This makes the retry operation to use the same address and buffer as the just failed transfer. Change-Id: I4f49bbdc861d634e33ea5e939a9693474411d24d
896 lines
21 KiB
C
896 lines
21 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id: $
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*
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* Copyright (C) 2011 by Tomasz Moń
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include "system.h"
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#include <string.h>
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#include "gcc_extensions.h"
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#include "panic.h"
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#include "dma-target.h"
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#include "ata_idle_notify.h"
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//#define SD_DEBUG
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#ifdef SD_DEBUG
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#include "lcd-target.h"
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#include "lcd.h"
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#include "font.h"
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#ifdef BOOTLOADER
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#include "common.h"
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#else
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#include "debug.h"
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#endif
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#endif
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#include "sdmmc.h"
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#include "system-target.h"
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#include "storage.h"
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/* The configuration method is not very flexible. */
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#define CARD_NUM_SLOT 1
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#define NUM_CARDS 2
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#define EC_OK 0
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#define EC_FAILED 1
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#define EC_NOCARD 2
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#define EC_WAIT_STATE_FAILED 3
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#define EC_POWER_UP 4
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#define EC_FIFO_WR_EMPTY 5
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#define EC_FIFO_WR_DONE 6
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#define EC_TRAN_READ_ENTRY 7
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#define EC_TRAN_READ_EXIT 8
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#define EC_TRAN_WRITE_ENTRY 9
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#define EC_TRAN_WRITE_EXIT 10
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#define EC_COMMAND 11
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#define EC_WRITE_PROTECT 12
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#define EC_DATA_TIMEOUT 13
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#define EC_RESP_TIMEOUT 14
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#define EC_CRC_ERROR 15
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#define NUM_EC 16
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#define MIN_YIELD_PERIOD 5
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#define UNALIGNED_NUM_SECTORS 10
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#define MAX_TRANSFER_ERRORS 10
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#define BLOCKS_PER_BANK 0x7A7800
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/* command flags for send_cmd */
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#define SDHC_RESP_FMT_NONE 0x0000
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#define SDHC_RESP_FMT_1 0x0200
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#define SDHC_RESP_FMT_2 0x0400
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#define SDHC_RESP_FMT_3 0x0600
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#define INITIAL_CLK 312500 /* Initial clock */
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#define SD_CLK 24000000 /* Clock for SD cards */
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#define MMC_CLK 15000000 /* Clock for MMC cards */
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#ifdef SD_DEBUG
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#ifdef BOOTLOADER
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#define dbgprintf printf
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#else
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#define dbgprintf DEBUGF
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#endif
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#else
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#define dbgprintf(...)
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#endif
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struct sd_card_status
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{
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int retry;
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int retry_max;
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};
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/** static, private data **/
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/* for compatibility */
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static long last_disk_activity = -1;
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static bool initialized = false;
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static bool sd_enabled = false;
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static long next_yield = 0;
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static tCardInfo card_info [NUM_CARDS];
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static tCardInfo *currcard;
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static struct sd_card_status sd_status[NUM_CARDS] =
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{
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#if NUM_CARDS > 1
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{0, 10},
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#endif
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{0, 10}
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};
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/* Shoot for around 75% usage */
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static struct mutex sd_mtx SHAREDBSS_ATTR;
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static volatile unsigned int transfer_error[NUM_DRIVES];
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/* align on cache line size */
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static unsigned char aligned_buffer[UNALIGNED_NUM_SECTORS * SD_BLOCK_SIZE]
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__attribute__((aligned(32)));
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static void sd_card_mux(int card_no)
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{
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#ifdef HAVE_MULTIDRIVE
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#ifdef SANSA_CONNECT
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/* GIO6 - select Card; GIO5 - select iNAND (both active low) */
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if (card_no == CARD_NUM_SLOT)
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{
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IO_GIO_BITSET0 = (1 << 5); /* deselect iNAND (GIO5) */
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IO_GIO_BITCLR0 = (1 << 6); /* select card (GIO6) */
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}
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else
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{
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IO_GIO_BITSET0 = (1 << 6); /* deselect card (GIO6) */
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IO_GIO_BITCLR0 = (1 << 5); /* select iNAND (GIO5) */
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}
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#else /* Different players */
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(void)card_no;
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#endif
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#else /* No multidrive */
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(void)card_no;
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#endif
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}
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static inline void enable_controller(bool on)
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{
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sd_enabled = on;
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}
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void sd_enable(bool on)
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{
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mutex_lock(&sd_mtx);
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enable_controller(on);
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mutex_unlock(&sd_mtx);
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}
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/* sets clock rate just like OF does */
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static void sd_set_clock_rate(unsigned long rate)
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{
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unsigned char rate_val = 0;
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if (rate == INITIAL_CLK)
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{
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rate_val = 0x3B;
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}
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else if (rate > INITIAL_CLK)
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{
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rate_val = 0;
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}
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else
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{
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rate_val = 0xFF;
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}
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IO_MMC_MEM_CLK_CONTROL = (IO_MMC_MEM_CLK_CONTROL & 0xFF00) | rate_val;
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}
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static int sd_poll_status(int st_reg_num, volatile unsigned int flag)
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{
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unsigned int status;
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unsigned int status1;
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bool done;
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do
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{
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long time = current_tick;
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if (TIME_AFTER(time, next_yield))
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{
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long ty = current_tick;
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yield();
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next_yield = ty + MIN_YIELD_PERIOD;
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}
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status = IO_MMC_STATUS0;
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status1 = IO_MMC_STATUS1;
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if (status & MMC_ST0_CMD_TIMEOUT)
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{
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dbgprintf("CMD timeout");
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return -EC_RESP_TIMEOUT;
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}
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if (status & MMC_ST0_DATA_TIMEOUT)
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{
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dbgprintf("DATA timeout");
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return -EC_DATA_TIMEOUT;
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}
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if (status &
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(MMC_ST0_WR_CRCERR | MMC_ST0_RD_CRCERR | MMC_ST0_RESP_CRCERR))
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{
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dbgprintf("CRC error");
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return -EC_CRC_ERROR;
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}
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if (st_reg_num == 0)
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{
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done = status & flag;
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}
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else
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{
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done = status1 & flag;
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}
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} while (!done);
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return EC_OK;
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}
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static int dma_wait_for_completion(void)
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{
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unsigned short dma_status;
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do
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{
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long time = current_tick;
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if (TIME_AFTER(time, next_yield))
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{
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long ty = current_tick;
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yield();
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next_yield = ty + MIN_YIELD_PERIOD;
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}
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dma_status = IO_MMC_SD_DMA_STATUS1;
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if (dma_status & (1 << 13))
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{
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return -EC_DATA_TIMEOUT;
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}
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} while (dma_status & (1 << 12));
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return EC_OK;
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}
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static int sd_command(int cmd, unsigned long arg,
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int cmdat, unsigned long *response)
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{
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int ret;
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/* Clear response registers */
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IO_MMC_RESPONSE0 = 0;
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IO_MMC_RESPONSE1 = 0;
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IO_MMC_RESPONSE2 = 0;
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IO_MMC_RESPONSE3 = 0;
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IO_MMC_RESPONSE4 = 0;
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IO_MMC_RESPONSE5 = 0;
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IO_MMC_RESPONSE6 = 0;
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IO_MMC_RESPONSE7 = 0;
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IO_MMC_COMMAND_INDEX = 0;
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IO_MMC_SPI_DATA = 0;
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IO_MMC_ARG_LOW = (unsigned int)((arg & 0xFFFF));
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IO_MMC_ARG_HI = (unsigned int)((arg & 0xFFFF0000) >> 16);
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/* SD is always in push-pull mode */
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cmdat |= MMC_CMD_PPLEN;
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cmdat |= (cmd & MMC_CMD_CMD_MASK);
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if (cmdat & MMC_CMD_DATA)
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cmdat |= MMC_CMD_DCLR;
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IO_MMC_COMMAND = cmdat;
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if (cmdat & MMC_CMD_DATA)
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{
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/* Command requires data - do not wait for RSPDNE */
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ret = EC_OK;
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}
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else
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{
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ret = sd_poll_status(0, MMC_ST0_RSPDNE);
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}
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if (ret != EC_OK)
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{
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dbgprintf("Command failed (ret %d)", ret);
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return ret;
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}
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if (response == NULL)
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{
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/* discard response */
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}
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else if ((cmdat & SDHC_RESP_FMT_1) || (cmdat & SDHC_RESP_FMT_3))
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{
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response[0] = (IO_MMC_RESPONSE7 << 16) | IO_MMC_RESPONSE6;
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}
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else if (cmdat & SDHC_RESP_FMT_2)
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{
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response[0] = (IO_MMC_RESPONSE7 << 16) | IO_MMC_RESPONSE6;
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response[1] = (IO_MMC_RESPONSE5 << 16) | IO_MMC_RESPONSE4;
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response[2] = (IO_MMC_RESPONSE3 << 16) | IO_MMC_RESPONSE2;
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response[3] = (IO_MMC_RESPONSE1 << 16) | IO_MMC_RESPONSE0;
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}
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return 0;
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}
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static int sd_init_card(const int card_no)
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{
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bool sdhc = false;
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unsigned long response[4];
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int ret;
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int i;
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memset(currcard, 0, sizeof(*currcard));
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sd_card_mux(card_no);
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/* Set data bus width to 1 bit */
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bitclr16(&IO_MMC_CONTROL, MMC_CTRL_WIDTH);
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sd_set_clock_rate(INITIAL_CLK);
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/* Prevent controller lock */
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udelay(100);
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ret = sd_command(SD_GO_IDLE_STATE, 0, MMC_CMD_INITCLK, NULL);
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if (ret < 0)
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return -1;
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ret = sd_command(SD_SEND_IF_COND, 0x1AA,
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SDHC_RESP_FMT_3, response);
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if ((response[0] & 0xFFF) == 0x1AA)
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{
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sdhc = true;
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dbgprintf("found sdhc card");
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}
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while ((currcard->ocr & (1 << 31)) == 0) /* until card is powered up */
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{
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ret = sd_command(SD_APP_CMD, currcard->rca,
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SDHC_RESP_FMT_1, NULL);
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if (ret < 0)
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{
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dbgprintf("SD_APP_CMD failed");
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return -1;
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}
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ret = sd_command(SD_APP_OP_COND,
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(1 << 20) /* 3.2-3.3V */ |
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(1 << 21) /* 3.3-3.4V */ |
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(sdhc ? (1 << 30) : 0),
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SDHC_RESP_FMT_3, &currcard->ocr);
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if (ret < 0)
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{
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dbgprintf("SD_APP_OP_COND failed");
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return -1;
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}
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}
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dbgprintf("Card powered up");
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ret = sd_command(SD_ALL_SEND_CID, 0,
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SDHC_RESP_FMT_2, response);
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if (ret < 0)
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{
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dbgprintf("SD_ALL_SEND_CID failed");
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return -1;
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}
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for (i = 0; i<4; i++)
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{
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currcard->cid[i] = response[i];
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}
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ret = sd_command(SD_SEND_RELATIVE_ADDR, 0,
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SDHC_RESP_FMT_1, &currcard->rca);
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if (ret < 0)
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{
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dbgprintf("SD_SEND_RELATIVE_ADDR failed");
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return -1;
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}
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ret = sd_command(SD_SEND_CSD, currcard->rca,
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SDHC_RESP_FMT_2, response);
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if (ret < 0)
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{
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dbgprintf("SD_SEND_CSD failed");
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return -1;
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}
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for (i = 0; i<4; i++)
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{
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currcard->csd[i] = response[i];
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}
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sd_parse_csd(currcard);
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sd_set_clock_rate(currcard->speed);
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/* Prevent controller lock */
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udelay(100);
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ret = sd_command(SD_SELECT_CARD, currcard->rca,
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SDHC_RESP_FMT_1, NULL);
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if (ret < 0)
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{
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dbgprintf("SD_SELECT_CARD failed");
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return -1;
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}
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ret = sd_command(SD_APP_CMD, currcard->rca,
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SDHC_RESP_FMT_1, NULL);
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if (ret < 0)
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{
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dbgprintf("SD_APP_CMD failed");
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return -1;
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}
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ret = sd_command(SD_SET_BUS_WIDTH, currcard->rca | 2,
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SDHC_RESP_FMT_1, NULL); /* 4 bit */
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if (ret < 0)
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{
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dbgprintf("SD_SET_BUS_WIDTH failed");
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return -1;
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}
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/* Set data bus width to 4 bits */
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bitset16(&IO_MMC_CONTROL, MMC_CTRL_WIDTH);
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ret = sd_command(SD_SET_BLOCKLEN, currcard->blocksize,
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SDHC_RESP_FMT_1, NULL);
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if (ret < 0)
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{
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dbgprintf("SD_SET_BLOCKLEN failed");
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return -1;
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}
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IO_MMC_BLOCK_LENGTH = currcard->blocksize;
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dbgprintf("Card initialized");
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currcard->initialized = 1;
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return EC_OK;
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}
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/* lock must already by aquired */
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static void sd_select_device(int card_no)
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{
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currcard = &card_info[card_no];
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if (card_no == 0)
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{
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/* Main card always gets a chance */
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sd_status[0].retry = 0;
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}
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if (currcard->initialized > 0)
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{
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/* This card is already initialized - switch to it */
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sd_card_mux(card_no);
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return;
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}
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if (currcard->initialized == 0)
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{
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/* Card needs (re)init */
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sd_init_card(card_no);
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}
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}
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static inline bool card_detect_target(void)
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{
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#ifdef SANSA_CONNECT
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bool removed;
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removed = IO_GIO_BITSET0 & (1 << 14);
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return !removed;
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#else
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return false;
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#endif
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}
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#ifdef HAVE_HOTSWAP
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static int sd1_oneshot_callback(struct timeout *tmo)
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{
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/* This is called only if the state was stable for 300ms - check state
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* and post appropriate event. */
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queue_broadcast(card_detect_target() ? SYS_HOTSWAP_INSERTED :
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SYS_HOTSWAP_EXTRACTED,
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CARD_NUM_SLOT);
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return 0;
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(void)tmo;
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}
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#ifdef SANSA_CONNECT
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void GIO14(void) __attribute__ ((section(".icode")));
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void GIO14(void)
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{
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static struct timeout sd1_oneshot;
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/* clear interrupt */
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IO_INTC_IRQ2 = (1<<3);
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timeout_register(&sd1_oneshot, sd1_oneshot_callback, (3*HZ/10), 0);
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}
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#endif
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bool sd_removable(IF_MD_NONVOID(int card_no))
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{
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#ifndef HAVE_MULTIDRIVE
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const int card_no = 0;
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#endif
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return (card_no == CARD_NUM_SLOT);
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}
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bool sd_present(IF_MD_NONVOID(int card_no))
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{
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#ifndef HAVE_MULTIDRIVE
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const int card_no = 0;
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#endif
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return (card_no == CARD_NUM_SLOT) ? card_detect_target() :
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#ifdef SANSA_CONNECT
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true; /* iNAND is always present */
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#else
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false;
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#endif
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}
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#else /* no hotswap */
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bool sd_removable(IF_MD_NONVOID(int card_no))
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{
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#ifdef HAVE_MULTIDRIVE
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(void)card_no;
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#endif
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/* not applicable */
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return false;
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}
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|
|
#endif /* HAVE_HOTSWAP */
|
|
|
|
static int sd_wait_for_state(unsigned int state)
|
|
{
|
|
unsigned long response = 0;
|
|
unsigned int timeout = HZ; /* ticks */
|
|
long t = current_tick;
|
|
|
|
while (1)
|
|
{
|
|
long tick;
|
|
int ret = sd_command(SD_SEND_STATUS, currcard->rca,
|
|
SDHC_RESP_FMT_1, &response);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
if ((SD_R1_CURRENT_STATE(response) == state))
|
|
{
|
|
return EC_OK;
|
|
}
|
|
|
|
if(TIME_AFTER(current_tick, t + timeout))
|
|
return -2;
|
|
|
|
if (TIME_AFTER((tick = current_tick), next_yield))
|
|
{
|
|
yield();
|
|
timeout += current_tick - tick;
|
|
next_yield = tick + MIN_YIELD_PERIOD;
|
|
}
|
|
}
|
|
}
|
|
|
|
static int sd_transfer_sectors(int card_no, unsigned long start,
|
|
int count, void *buffer, bool write)
|
|
{
|
|
int ret;
|
|
unsigned long start_addr;
|
|
int dma_channel = -1;
|
|
bool use_direct_dma;
|
|
int count_per_dma;
|
|
unsigned long rel_addr;
|
|
|
|
dbgprintf("transfer %d %d %d", card_no, start, count);
|
|
mutex_lock(&sd_mtx);
|
|
enable_controller(true);
|
|
|
|
sd_transfer_retry:
|
|
if (card_no == CARD_NUM_SLOT && !card_detect_target())
|
|
{
|
|
/* no external sd-card inserted */
|
|
ret = -EC_NOCARD;
|
|
goto sd_transfer_error;
|
|
}
|
|
|
|
sd_select_device(card_no);
|
|
|
|
if (currcard->initialized < 0)
|
|
{
|
|
ret = currcard->initialized;
|
|
goto sd_transfer_error;
|
|
}
|
|
|
|
last_disk_activity = current_tick;
|
|
|
|
ret = sd_wait_for_state(SD_TRAN);
|
|
if (ret < EC_OK)
|
|
{
|
|
goto sd_transfer_error;
|
|
}
|
|
|
|
IO_MMC_BLOCK_LENGTH = currcard->blocksize;
|
|
|
|
start_addr = start;
|
|
|
|
do
|
|
{
|
|
count_per_dma = count;
|
|
|
|
if (((unsigned long)buffer) & 0x1F)
|
|
{
|
|
/* MMC/SD interface requires 32-byte alignment of buffer */
|
|
use_direct_dma = false;
|
|
if (count > UNALIGNED_NUM_SECTORS)
|
|
{
|
|
count_per_dma = UNALIGNED_NUM_SECTORS;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
use_direct_dma = true;
|
|
}
|
|
|
|
if (write == true)
|
|
{
|
|
if (use_direct_dma == false)
|
|
{
|
|
memcpy(aligned_buffer, buffer, count_per_dma*SD_BLOCK_SIZE);
|
|
}
|
|
commit_dcache_range(use_direct_dma ? buffer : aligned_buffer,
|
|
count_per_dma*SD_BLOCK_SIZE);
|
|
}
|
|
|
|
IO_MMC_NR_BLOCKS = count_per_dma;
|
|
|
|
/* Set start_addr to the correct unit (blocks or bytes) */
|
|
if (!(card_info[card_no].ocr & SD_OCR_CARD_CAPACITY_STATUS))
|
|
start_addr *= SD_BLOCK_SIZE; /* not SDHC */
|
|
|
|
ret = sd_command(write ? SD_WRITE_MULTIPLE_BLOCK : SD_READ_MULTIPLE_BLOCK,
|
|
start_addr, MMC_CMD_DCLR | MMC_CMD_DATA |
|
|
SDHC_RESP_FMT_1 | (write ? MMC_CMD_WRITE : 0),
|
|
NULL);
|
|
|
|
if (ret < 0)
|
|
goto sd_transfer_error;
|
|
|
|
/* other burst modes are not supported for this peripheral */
|
|
dma_channel = dma_request_channel(DMA_PERIPHERAL_MMCSD,
|
|
DMA_MODE_8_BURST);
|
|
|
|
if (use_direct_dma == true)
|
|
{
|
|
rel_addr = ((unsigned long)buffer)-CONFIG_SDRAM_START;
|
|
}
|
|
else
|
|
{
|
|
rel_addr = ((unsigned long)aligned_buffer)-CONFIG_SDRAM_START;
|
|
}
|
|
|
|
IO_MMC_SD_DMA_ADDR_LOW = rel_addr & 0xFFFF;
|
|
IO_MMC_SD_DMA_ADDR_HI = (rel_addr & 0xFFFF0000) >> 16;
|
|
|
|
IO_MMC_SD_DMA_MODE |= MMC_DMAMODE_ENABLE;
|
|
if (write == true)
|
|
{
|
|
IO_MMC_SD_DMA_MODE |= MMC_DMAMODE_WRITE;
|
|
}
|
|
|
|
IO_MMC_SD_DMA_TRIGGER = 1;
|
|
|
|
dbgprintf("SD DMA transfer in progress");
|
|
|
|
ret = dma_wait_for_completion();
|
|
dma_release_channel(dma_channel);
|
|
|
|
dbgprintf("SD DMA transfer complete");
|
|
|
|
if (ret != EC_OK)
|
|
{
|
|
goto sd_transfer_error;
|
|
}
|
|
|
|
if (write == false)
|
|
{
|
|
discard_dcache_range(use_direct_dma ? buffer : aligned_buffer,
|
|
count_per_dma*SD_BLOCK_SIZE);
|
|
|
|
if (use_direct_dma == false)
|
|
{
|
|
memcpy(buffer, aligned_buffer, count_per_dma*SD_BLOCK_SIZE);
|
|
}
|
|
}
|
|
|
|
last_disk_activity = current_tick;
|
|
|
|
ret = sd_command(SD_STOP_TRANSMISSION, 0, SDHC_RESP_FMT_1, NULL);
|
|
if (ret < 0)
|
|
{
|
|
goto sd_transfer_error;
|
|
}
|
|
|
|
ret = sd_wait_for_state(SD_TRAN);
|
|
if (ret < 0)
|
|
{
|
|
goto sd_transfer_error;
|
|
}
|
|
|
|
count -= count_per_dma;
|
|
buffer += count_per_dma*SD_BLOCK_SIZE;
|
|
start_addr += count_per_dma;
|
|
} while (count > 0);
|
|
|
|
while (1)
|
|
{
|
|
enable_controller(false);
|
|
mutex_unlock(&sd_mtx);
|
|
|
|
return ret;
|
|
|
|
sd_transfer_error:
|
|
if (sd_status[card_no].retry < sd_status[card_no].retry_max
|
|
&& ret != -EC_NOCARD)
|
|
{
|
|
sd_status[card_no].retry++;
|
|
currcard->initialized = 0;
|
|
goto sd_transfer_retry;
|
|
}
|
|
}
|
|
}
|
|
|
|
int sd_read_sectors(IF_MD(int card_no,) unsigned long start, int incount,
|
|
void* inbuf)
|
|
{
|
|
#ifndef HAVE_MULTIDRIVE
|
|
const int card_no = 0;
|
|
#endif
|
|
return sd_transfer_sectors(card_no, start, incount, inbuf, false);
|
|
}
|
|
|
|
int sd_write_sectors(IF_MD(int card_no,) unsigned long start, int count,
|
|
const void* outbuf)
|
|
{
|
|
#ifndef BOOTLOADER
|
|
#ifndef HAVE_MULTIDRIVE
|
|
const int card_no = 0;
|
|
#endif
|
|
return sd_transfer_sectors(card_no, start, count, (void*)outbuf, true);
|
|
#else /* we don't need write support in bootloader */
|
|
#ifdef HAVE_MULTIDRIVE
|
|
(void)card_no;
|
|
#endif
|
|
(void)start;
|
|
(void)count;
|
|
(void)outbuf;
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
int sd_init(void)
|
|
{
|
|
int ret = EC_OK;
|
|
|
|
if (!initialized)
|
|
{
|
|
mutex_init(&sd_mtx);
|
|
initialized = true;
|
|
}
|
|
|
|
mutex_lock(&sd_mtx);
|
|
|
|
#ifndef BOOTLOADER
|
|
enable_controller(false);
|
|
#endif
|
|
|
|
/* based on linux/drivers/mmc/dm320mmc.c
|
|
Copyright (C) 2006 ZSI, All Rights Reserved.
|
|
Written by: Ben Bostwick */
|
|
|
|
bitclr16(&IO_CLK_MOD2, CLK_MOD2_MMC);
|
|
bitset16(&IO_CLK_INV, CLK_INV_MMC);
|
|
|
|
/* mmc module clock: 75 Mhz (AHB) / 2 = ~37.5 Mhz
|
|
* (Frequencies above are taken from Sansa Connect's OF source code) */
|
|
IO_CLK_DIV3 = (IO_CLK_DIV3 & 0xFF00) | 0x02; /* OF uses 1 */
|
|
|
|
bitset16(&IO_CLK_MOD2, CLK_MOD2_MMC);
|
|
|
|
/* set mmc module into reset */
|
|
bitset16(&IO_MMC_CONTROL, (MMC_CTRL_DATRST | MMC_CTRL_CMDRST));
|
|
|
|
/* set resp timeout to max */
|
|
IO_MMC_RESPONSE_TIMEOUT |= 0x1FFF;
|
|
IO_MMC_READ_TIMEOUT = 0xFFFF;
|
|
|
|
/* all done, take mmc module out of reset */
|
|
bitclr16(&IO_MMC_CONTROL, (MMC_CTRL_DATRST | MMC_CTRL_CMDRST));
|
|
|
|
#ifdef SANSA_CONNECT
|
|
/* GIO37 - Power Card; GIO38 - Power iNAND (both active low) */
|
|
IO_GIO_DIR2 &= ~((1 << 5) /* GIO37 */ | (1 << 6) /* GIO38 */);
|
|
IO_GIO_INV2 &= ~((1 << 5) /* GIO37 */ | (1 << 6) /* GIO38 */);
|
|
IO_GIO_BITCLR2 = (1 << 5) | (1 << 6);
|
|
|
|
/* GIO6 - select Card; GIO5 - select iNAND (both active low) */
|
|
IO_GIO_DIR0 &= ~((1 << 6) /* GIO6 */ | (1 << 5) /* GIO5 */);
|
|
IO_GIO_INV0 &= ~((1 << 6) /* GIO6 */ | (1 << 5) /* GIO5 */);
|
|
IO_GIO_BITSET0 = (1 << 6) | (1 << 5);
|
|
|
|
#ifdef HAVE_HOTSWAP
|
|
/* GIO14 is card detect */
|
|
IO_GIO_DIR0 |= (1 << 14); /* Set GIO14 as input */
|
|
IO_GIO_INV0 &= ~(1 << 14); /* GIO14 not inverted */
|
|
IO_GIO_IRQPORT |= (1 << 14); /* Enable GIO14 external interrupt */
|
|
IO_GIO_IRQEDGE |= (1 << 14); /* Any edge detection */
|
|
|
|
/* Enable GIO14 interrupt */
|
|
IO_INTC_EINT2 |= INTR_EINT2_EXT14;
|
|
#endif
|
|
#endif
|
|
|
|
sd_select_device(1);
|
|
|
|
/* Disable Memory Card CLK - it is enabled on demand by TMS320DM320 */
|
|
bitclr16(&IO_MMC_MEM_CLK_CONTROL, (1 << 8));
|
|
mutex_unlock(&sd_mtx);
|
|
|
|
return ret;
|
|
}
|
|
|
|
long sd_last_disk_activity(void)
|
|
{
|
|
return last_disk_activity;
|
|
}
|
|
|
|
tCardInfo *card_get_info_target(int card_no)
|
|
{
|
|
return &card_info[card_no];
|
|
}
|
|
|
|
int sd_event(long id, intptr_t data)
|
|
{
|
|
int rc = 0;
|
|
|
|
switch (id)
|
|
{
|
|
#ifdef HAVE_HOTSWAP
|
|
case SYS_HOTSWAP_INSERTED:
|
|
case SYS_HOTSWAP_EXTRACTED:
|
|
mutex_lock(&sd_mtx); /* lock-out card activity */
|
|
/* Force card init for new card, re-init for re-inserted one or
|
|
* clear if the last attempt to init failed with an error. */
|
|
card_info[data].initialized = 0;
|
|
mutex_unlock(&sd_mtx);
|
|
break;
|
|
#endif /* HAVE_HOTSWAP */
|
|
default:
|
|
rc = storage_event_default_handler(id, data, last_disk_activity,
|
|
STORAGE_SD);
|
|
break;
|
|
}
|
|
|
|
return rc;
|
|
}
|