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/*
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* SD Memory Card emulation as defined in the "SD Memory Card Physical
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* layer specification, Version 1.10."
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*
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* Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org>
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* Copyright (c) 2007 CodeSourcery
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "sd.h" |
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//#define DEBUG_SD 1
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#ifdef DEBUG_SD
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#define DPRINTF(fmt, args...) \
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do { printf("SD: " fmt , ##args); } while (0) |
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#else
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#define DPRINTF(fmt, args...) do {} while(0) |
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#endif
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typedef enum { |
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sd_r0 = 0, /* no response */ |
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sd_r1, /* normal response command */
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sd_r2_i, /* CID register */
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sd_r2_s, /* CSD register */
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sd_r3, /* OCR register */
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sd_r6 = 6, /* Published RCA response */ |
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sd_r1b = -1,
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} sd_rsp_type_t; |
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struct SDState {
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enum {
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sd_inactive, |
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sd_card_identification_mode, |
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sd_data_transfer_mode, |
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} mode; |
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enum {
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sd_inactive_state = -1,
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sd_idle_state = 0,
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sd_ready_state, |
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sd_identification_state, |
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sd_standby_state, |
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sd_transfer_state, |
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sd_sendingdata_state, |
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sd_receivingdata_state, |
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sd_programming_state, |
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sd_disconnect_state, |
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} state; |
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uint32_t ocr; |
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uint8_t scr[8];
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uint8_t cid[16];
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uint8_t csd[16];
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uint16_t rca; |
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uint32_t card_status; |
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uint8_t sd_status[64];
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int wp_switch;
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int *wp_groups;
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uint32_t size; |
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int blk_len;
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uint32_t erase_start; |
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uint32_t erase_end; |
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uint8_t pwd[16];
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int pwd_len;
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int function_group[6]; |
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int current_cmd;
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int blk_written;
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uint32_t data_start; |
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uint32_t data_offset; |
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uint8_t data[512];
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void (*readonly_cb)(void *, int); |
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void (*inserted_cb)(void *, int); |
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void *opaque;
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BlockDriverState *bdrv; |
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}; |
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static void sd_set_status(SDState *sd) |
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{ |
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switch (sd->state) {
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case sd_inactive_state:
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sd->mode = sd_inactive; |
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break;
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case sd_idle_state:
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case sd_ready_state:
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case sd_identification_state:
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sd->mode = sd_card_identification_mode; |
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break;
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case sd_standby_state:
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case sd_transfer_state:
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case sd_sendingdata_state:
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case sd_receivingdata_state:
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case sd_programming_state:
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case sd_disconnect_state:
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sd->mode = sd_data_transfer_mode; |
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break;
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} |
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sd->card_status &= ~CURRENT_STATE; |
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sd->card_status |= sd->state << 9;
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} |
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const sd_cmd_type_t sd_cmd_type[64] = { |
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sd_bc, sd_none, sd_bcr, sd_bcr, sd_none, sd_none, sd_none, sd_ac, |
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sd_none, sd_ac, sd_ac, sd_adtc, sd_ac, sd_ac, sd_none, sd_ac, |
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sd_ac, sd_adtc, sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, |
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sd_adtc, sd_adtc, sd_adtc, sd_adtc, sd_ac, sd_ac, sd_adtc, sd_none, |
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sd_ac, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none, |
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sd_none, sd_none, sd_bc, sd_none, sd_none, sd_none, sd_none, sd_none, |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, |
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sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
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}; |
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const sd_cmd_type_t sd_acmd_type[64] = { |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none, |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_ac, |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
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sd_none, sd_bcr, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_none, |
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sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, sd_none, sd_none, |
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sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
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}; |
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static const int sd_cmd_class[64] = { |
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0, 0, 0, 0, 0, 9, 10, 0, 0, 0, 0, 1, 0, 0, 0, 0, |
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2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 6, 6, 6, 6, |
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5, 5, 10, 10, 10, 10, 5, 9, 9, 9, 7, 7, 7, 7, 7, 7, |
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7, 7, 10, 7, 9, 9, 9, 8, 8, 10, 8, 8, 8, 8, 8, 8, |
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}; |
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static uint8_t sd_crc7(void *message, size_t width) |
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{ |
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int i, bit;
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uint8_t shift_reg = 0x00;
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uint8_t *msg = (uint8_t *) message; |
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for (i = 0; i < width; i ++, msg ++) |
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for (bit = 7; bit >= 0; bit --) { |
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shift_reg <<= 1;
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if ((shift_reg >> 7) ^ ((*msg >> bit) & 1)) |
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shift_reg ^= 0x89;
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} |
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return shift_reg;
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} |
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static uint16_t sd_crc16(void *message, size_t width) |
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{ |
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int i, bit;
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uint16_t shift_reg = 0x0000;
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uint16_t *msg = (uint16_t *) message; |
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width <<= 1;
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for (i = 0; i < width; i ++, msg ++) |
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for (bit = 15; bit >= 0; bit --) { |
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shift_reg <<= 1;
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if ((shift_reg >> 15) ^ ((*msg >> bit) & 1)) |
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shift_reg ^= 0x1011;
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} |
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return shift_reg;
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} |
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static void sd_set_ocr(SDState *sd) |
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{ |
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sd->ocr = 0x80fffff0;
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} |
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static void sd_set_scr(SDState *sd) |
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{ |
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sd->scr[0] = 0x00; /* SCR Structure */ |
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sd->scr[1] = 0x2f; /* SD Security Support */ |
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sd->scr[2] = 0x00; |
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sd->scr[3] = 0x00; |
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sd->scr[4] = 0x00; |
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sd->scr[5] = 0x00; |
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sd->scr[6] = 0x00; |
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sd->scr[7] = 0x00; |
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} |
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#define MID 0xaa |
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#define OID "XY" |
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#define PNM "QEMU!" |
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#define PRV 0x01 |
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#define MDT_YR 2006 |
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#define MDT_MON 2 |
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static void sd_set_cid(SDState *sd) |
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{ |
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sd->cid[0] = MID; /* Fake card manufacturer ID (MID) */ |
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sd->cid[1] = OID[0]; /* OEM/Application ID (OID) */ |
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sd->cid[2] = OID[1]; |
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sd->cid[3] = PNM[0]; /* Fake product name (PNM) */ |
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sd->cid[4] = PNM[1]; |
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sd->cid[5] = PNM[2]; |
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sd->cid[6] = PNM[3]; |
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sd->cid[7] = PNM[4]; |
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sd->cid[8] = PRV; /* Fake product revision (PRV) */ |
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sd->cid[9] = 0xde; /* Fake serial number (PSN) */ |
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sd->cid[10] = 0xad; |
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sd->cid[11] = 0xbe; |
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sd->cid[12] = 0xef; |
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sd->cid[13] = 0x00 | /* Manufacture date (MDT) */ |
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((MDT_YR - 2000) / 10); |
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sd->cid[14] = ((MDT_YR % 10) << 4) | MDT_MON; |
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sd->cid[15] = (sd_crc7(sd->cid, 15) << 1) | 1; |
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} |
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|
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#define HWBLOCK_SHIFT 9 /* 512 bytes */ |
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#define SECTOR_SHIFT 5 /* 16 kilobytes */ |
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#define WPGROUP_SHIFT 7 /* 2 megs */ |
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#define CMULT_SHIFT 9 /* 512 times HWBLOCK_SIZE */ |
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#define BLOCK_SIZE (1 << (HWBLOCK_SHIFT)) |
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#define SECTOR_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT)) |
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#define WPGROUP_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) |
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static const uint8_t sd_csd_rw_mask[16] = { |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xfe, |
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}; |
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static void sd_set_csd(SDState *sd, uint32_t size) |
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{ |
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uint32_t csize = (size >> (CMULT_SHIFT + HWBLOCK_SHIFT)) - 1;
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uint32_t sectsize = (1 << (SECTOR_SHIFT + 1)) - 1; |
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uint32_t wpsize = (1 << (WPGROUP_SHIFT + 1)) - 1; |
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sd->csd[0] = 0x00; /* CSD structure */ |
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sd->csd[1] = 0x26; /* Data read access-time-1 */ |
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sd->csd[2] = 0x00; /* Data read access-time-2 */ |
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sd->csd[3] = 0x5a; /* Max. data transfer rate */ |
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sd->csd[4] = 0x5f; /* Card Command Classes */ |
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sd->csd[5] = 0x50 | /* Max. read data block length */ |
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HWBLOCK_SHIFT; |
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sd->csd[6] = 0xe0 | /* Partial block for read allowed */ |
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((csize >> 10) & 0x03); |
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sd->csd[7] = 0x00 | /* Device size */ |
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((csize >> 2) & 0xff); |
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sd->csd[8] = 0x3f | /* Max. read current */ |
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((csize << 6) & 0xc0); |
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sd->csd[9] = 0xfc | /* Max. write current */ |
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((CMULT_SHIFT - 2) >> 1); |
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sd->csd[10] = 0x40 | /* Erase sector size */ |
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(((CMULT_SHIFT - 2) << 7) & 0x80) | (sectsize >> 1); |
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sd->csd[11] = 0x00 | /* Write protect group size */ |
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((sectsize << 7) & 0x80) | wpsize; |
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sd->csd[12] = 0x90 | /* Write speed factor */ |
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(HWBLOCK_SHIFT >> 2);
|
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sd->csd[13] = 0x20 | /* Max. write data block length */ |
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((HWBLOCK_SHIFT << 6) & 0xc0); |
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sd->csd[14] = 0x00; /* File format group */ |
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sd->csd[15] = (sd_crc7(sd->csd, 15) << 1) | 1; |
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} |
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|
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static void sd_set_rca(SDState *sd) |
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{ |
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sd->rca += 0x4567;
|
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} |
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#define CARD_STATUS_A 0x02004100 |
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#define CARD_STATUS_B 0x00c01e00 |
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#define CARD_STATUS_C 0xfd39a028 |
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|
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static void sd_set_cardstatus(SDState *sd) |
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{ |
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sd->card_status = 0x00000100;
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} |
292 |
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static void sd_set_sdstatus(SDState *sd) |
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{ |
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memset(sd->sd_status, 0, 64); |
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} |
297 |
|
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static int sd_req_crc_validate(struct sd_request_s *req) |
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{ |
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uint8_t buffer[5];
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buffer[0] = 0x40 | req->cmd; |
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buffer[1] = (req->arg >> 24) & 0xff; |
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buffer[2] = (req->arg >> 16) & 0xff; |
304 |
buffer[3] = (req->arg >> 8) & 0xff; |
305 |
buffer[4] = (req->arg >> 0) & 0xff; |
306 |
return 0; |
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return sd_crc7(buffer, 5) != req->crc; /* TODO */ |
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} |
309 |
|
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void sd_response_r1_make(SDState *sd,
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uint8_t *response, uint32_t last_status) |
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{ |
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uint32_t mask = CARD_STATUS_B ^ ILLEGAL_COMMAND; |
314 |
uint32_t status; |
315 |
|
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status = (sd->card_status & ~mask) | (last_status & mask); |
317 |
sd->card_status &= ~CARD_STATUS_C | APP_CMD; |
318 |
|
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response[0] = (status >> 24) & 0xff; |
320 |
response[1] = (status >> 16) & 0xff; |
321 |
response[2] = (status >> 8) & 0xff; |
322 |
response[3] = (status >> 0) & 0xff; |
323 |
} |
324 |
|
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void sd_response_r3_make(SDState *sd, uint8_t *response)
|
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{ |
327 |
response[0] = (sd->ocr >> 24) & 0xff; |
328 |
response[1] = (sd->ocr >> 16) & 0xff; |
329 |
response[2] = (sd->ocr >> 8) & 0xff; |
330 |
response[3] = (sd->ocr >> 0) & 0xff; |
331 |
} |
332 |
|
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void sd_response_r6_make(SDState *sd, uint8_t *response)
|
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{ |
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uint16_t arg; |
336 |
uint16_t status; |
337 |
|
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arg = sd->rca; |
339 |
status = ((sd->card_status >> 8) & 0xc000) | |
340 |
((sd->card_status >> 6) & 0x2000) | |
341 |
(sd->card_status & 0x1fff);
|
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|
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response[0] = (arg >> 8) & 0xff; |
344 |
response[1] = arg & 0xff; |
345 |
response[2] = (status >> 8) & 0xff; |
346 |
response[3] = status & 0xff; |
347 |
} |
348 |
|
349 |
static void sd_reset(SDState *sd, BlockDriverState *bdrv) |
350 |
{ |
351 |
uint32_t size; |
352 |
uint64_t sect; |
353 |
|
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bdrv_get_geometry(bdrv, §); |
355 |
sect <<= 9;
|
356 |
|
357 |
if (sect > 0x40000000) |
358 |
size = 0x40000000; /* 1 gig */ |
359 |
else
|
360 |
size = sect + 1;
|
361 |
|
362 |
sect = (size >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) + 1;
|
363 |
|
364 |
sd->state = sd_idle_state; |
365 |
sd->rca = 0x0000;
|
366 |
sd_set_ocr(sd); |
367 |
sd_set_scr(sd); |
368 |
sd_set_cid(sd); |
369 |
sd_set_csd(sd, size); |
370 |
sd_set_cardstatus(sd); |
371 |
sd_set_sdstatus(sd); |
372 |
|
373 |
sd->bdrv = bdrv; |
374 |
|
375 |
sd->wp_switch = bdrv_is_read_only(bdrv); |
376 |
sd->wp_groups = (int *) qemu_mallocz(sizeof(int) * sect); |
377 |
memset(sd->wp_groups, 0, sizeof(int) * sect); |
378 |
memset(sd->function_group, 0, sizeof(int) * 6); |
379 |
sd->erase_start = 0;
|
380 |
sd->erase_end = 0;
|
381 |
sd->size = size; |
382 |
sd->blk_len = 0x200;
|
383 |
sd->pwd_len = 0;
|
384 |
} |
385 |
|
386 |
static void sd_cardchange(void *opaque) |
387 |
{ |
388 |
SDState *sd = opaque; |
389 |
if (sd->inserted_cb)
|
390 |
sd->inserted_cb(sd->opaque, bdrv_is_inserted(sd->bdrv)); |
391 |
if (bdrv_is_inserted(sd->bdrv)) {
|
392 |
sd_reset(sd, sd->bdrv); |
393 |
if (sd->readonly_cb)
|
394 |
sd->readonly_cb(sd->opaque, sd->wp_switch); |
395 |
} |
396 |
} |
397 |
|
398 |
SDState *sd_init(BlockDriverState *bs) |
399 |
{ |
400 |
SDState *sd; |
401 |
|
402 |
sd = (SDState *) qemu_mallocz(sizeof(SDState));
|
403 |
sd_reset(sd, bs); |
404 |
return sd;
|
405 |
} |
406 |
|
407 |
void sd_set_cb(SDState *sd, void *opaque, |
408 |
void (*readonly_cb)(void *, int), |
409 |
void (*inserted_cb)(void *, int)) |
410 |
{ |
411 |
sd->opaque = opaque; |
412 |
sd->readonly_cb = readonly_cb; |
413 |
sd->inserted_cb = inserted_cb; |
414 |
if (sd->readonly_cb)
|
415 |
sd->readonly_cb(sd->opaque, bdrv_is_read_only(sd->bdrv)); |
416 |
if (sd->inserted_cb)
|
417 |
sd->inserted_cb(sd->opaque, bdrv_is_inserted(sd->bdrv)); |
418 |
bdrv_set_change_cb(sd->bdrv, sd_cardchange, sd); |
419 |
} |
420 |
|
421 |
static void sd_erase(SDState *sd) |
422 |
{ |
423 |
int i, start, end;
|
424 |
if (!sd->erase_start || !sd->erase_end) {
|
425 |
sd->card_status |= ERASE_SEQ_ERROR; |
426 |
return;
|
427 |
} |
428 |
|
429 |
start = sd->erase_start >> |
430 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
431 |
end = sd->erase_end >> |
432 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
433 |
sd->erase_start = 0;
|
434 |
sd->erase_end = 0;
|
435 |
sd->csd[14] |= 0x40; |
436 |
|
437 |
for (i = start; i <= end; i ++)
|
438 |
if (sd->wp_groups[i])
|
439 |
sd->card_status |= WP_ERASE_SKIP; |
440 |
} |
441 |
|
442 |
static uint32_t sd_wpbits(SDState *sd, uint32_t addr)
|
443 |
{ |
444 |
uint32_t i, wpnum; |
445 |
uint32_t ret = 0;
|
446 |
|
447 |
wpnum = addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
448 |
|
449 |
for (i = 0; i < 32; i ++, wpnum ++, addr += WPGROUP_SIZE) |
450 |
if (addr < sd->size && sd->wp_groups[wpnum])
|
451 |
ret |= (1 << i);
|
452 |
|
453 |
return ret;
|
454 |
} |
455 |
|
456 |
static void sd_function_switch(SDState *sd, uint32_t arg) |
457 |
{ |
458 |
int i, mode, new_func, crc;
|
459 |
mode = !!(arg & 0x80000000);
|
460 |
|
461 |
sd->data[0] = 0x00; /* Maximum current consumption */ |
462 |
sd->data[1] = 0x01; |
463 |
sd->data[2] = 0x80; /* Supported group 6 functions */ |
464 |
sd->data[3] = 0x01; |
465 |
sd->data[4] = 0x80; /* Supported group 5 functions */ |
466 |
sd->data[5] = 0x01; |
467 |
sd->data[6] = 0x80; /* Supported group 4 functions */ |
468 |
sd->data[7] = 0x01; |
469 |
sd->data[8] = 0x80; /* Supported group 3 functions */ |
470 |
sd->data[9] = 0x01; |
471 |
sd->data[10] = 0x80; /* Supported group 2 functions */ |
472 |
sd->data[11] = 0x43; |
473 |
sd->data[12] = 0x80; /* Supported group 1 functions */ |
474 |
sd->data[13] = 0x03; |
475 |
for (i = 0; i < 6; i ++) { |
476 |
new_func = (arg >> (i * 4)) & 0x0f; |
477 |
if (mode && new_func != 0x0f) |
478 |
sd->function_group[i] = new_func; |
479 |
sd->data[14 + (i >> 1)] = new_func << ((i * 4) & 4); |
480 |
} |
481 |
memset(&sd->data[17], 0, 47); |
482 |
crc = sd_crc16(sd->data, 64);
|
483 |
sd->data[65] = crc >> 8; |
484 |
sd->data[66] = crc & 0xff; |
485 |
} |
486 |
|
487 |
static inline int sd_wp_addr(SDState *sd, uint32_t addr) |
488 |
{ |
489 |
return sd->wp_groups[addr >>
|
490 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)]; |
491 |
} |
492 |
|
493 |
static void sd_lock_command(SDState *sd) |
494 |
{ |
495 |
int erase, lock, clr_pwd, set_pwd, pwd_len;
|
496 |
erase = !!(sd->data[0] & 0x08); |
497 |
lock = sd->data[0] & 0x04; |
498 |
clr_pwd = sd->data[0] & 0x02; |
499 |
set_pwd = sd->data[0] & 0x01; |
500 |
|
501 |
if (sd->blk_len > 1) |
502 |
pwd_len = sd->data[1];
|
503 |
else
|
504 |
pwd_len = 0;
|
505 |
|
506 |
if (erase) {
|
507 |
if (!(sd->card_status & CARD_IS_LOCKED) || sd->blk_len > 1 || |
508 |
set_pwd || clr_pwd || lock || sd->wp_switch || |
509 |
(sd->csd[14] & 0x20)) { |
510 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
511 |
return;
|
512 |
} |
513 |
memset(sd->wp_groups, 0, sizeof(int) * (sd->size >> |
514 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT))); |
515 |
sd->csd[14] &= ~0x10; |
516 |
sd->card_status &= ~CARD_IS_LOCKED; |
517 |
sd->pwd_len = 0;
|
518 |
/* Erasing the entire card here! */
|
519 |
printf("SD: Card force-erased by CMD42\n");
|
520 |
return;
|
521 |
} |
522 |
|
523 |
if (sd->blk_len < 2 + pwd_len || |
524 |
pwd_len <= sd->pwd_len || |
525 |
pwd_len > sd->pwd_len + 16) {
|
526 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
527 |
return;
|
528 |
} |
529 |
|
530 |
if (sd->pwd_len && memcmp(sd->pwd, sd->data + 2, sd->pwd_len)) { |
531 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
532 |
return;
|
533 |
} |
534 |
|
535 |
pwd_len -= sd->pwd_len; |
536 |
if ((pwd_len && !set_pwd) ||
|
537 |
(clr_pwd && (set_pwd || lock)) || |
538 |
(lock && !sd->pwd_len && !set_pwd) || |
539 |
(!set_pwd && !clr_pwd && |
540 |
(((sd->card_status & CARD_IS_LOCKED) && lock) || |
541 |
(!(sd->card_status & CARD_IS_LOCKED) && !lock)))) { |
542 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
543 |
return;
|
544 |
} |
545 |
|
546 |
if (set_pwd) {
|
547 |
memcpy(sd->pwd, sd->data + 2 + sd->pwd_len, pwd_len);
|
548 |
sd->pwd_len = pwd_len; |
549 |
} |
550 |
|
551 |
if (clr_pwd) {
|
552 |
sd->pwd_len = 0;
|
553 |
} |
554 |
|
555 |
if (lock)
|
556 |
sd->card_status |= CARD_IS_LOCKED; |
557 |
else
|
558 |
sd->card_status &= ~CARD_IS_LOCKED; |
559 |
} |
560 |
|
561 |
static sd_rsp_type_t sd_normal_command(SDState *sd,
|
562 |
struct sd_request_s req)
|
563 |
{ |
564 |
uint32_t rca = 0x0000;
|
565 |
|
566 |
if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc)
|
567 |
rca = req.arg >> 16;
|
568 |
|
569 |
DPRINTF("CMD%d 0x%08x state %d\n", req.cmd, req.arg, sd->state);
|
570 |
switch (req.cmd) {
|
571 |
/* Basic commands (Class 0 and Class 1) */
|
572 |
case 0: /* CMD0: GO_IDLE_STATE */ |
573 |
switch (sd->state) {
|
574 |
case sd_inactive_state:
|
575 |
return sd_r0;
|
576 |
|
577 |
default:
|
578 |
sd->state = sd_idle_state; |
579 |
sd_reset(sd, sd->bdrv); |
580 |
return sd_r0;
|
581 |
} |
582 |
break;
|
583 |
|
584 |
case 2: /* CMD2: ALL_SEND_CID */ |
585 |
switch (sd->state) {
|
586 |
case sd_ready_state:
|
587 |
sd->state = sd_identification_state; |
588 |
return sd_r2_i;
|
589 |
|
590 |
default:
|
591 |
break;
|
592 |
} |
593 |
break;
|
594 |
|
595 |
case 3: /* CMD3: SEND_RELATIVE_ADDR */ |
596 |
switch (sd->state) {
|
597 |
case sd_identification_state:
|
598 |
case sd_standby_state:
|
599 |
sd->state = sd_standby_state; |
600 |
sd_set_rca(sd); |
601 |
return sd_r6;
|
602 |
|
603 |
default:
|
604 |
break;
|
605 |
} |
606 |
break;
|
607 |
|
608 |
case 4: /* CMD4: SEND_DSR */ |
609 |
switch (sd->state) {
|
610 |
case sd_standby_state:
|
611 |
break;
|
612 |
|
613 |
default:
|
614 |
break;
|
615 |
} |
616 |
break;
|
617 |
|
618 |
case 6: /* CMD6: SWITCH_FUNCTION */ |
619 |
switch (sd->mode) {
|
620 |
case sd_data_transfer_mode:
|
621 |
sd_function_switch(sd, req.arg); |
622 |
sd->state = sd_sendingdata_state; |
623 |
sd->data_start = 0;
|
624 |
sd->data_offset = 0;
|
625 |
return sd_r1;
|
626 |
|
627 |
default:
|
628 |
break;
|
629 |
} |
630 |
break;
|
631 |
|
632 |
case 7: /* CMD7: SELECT/DESELECT_CARD */ |
633 |
switch (sd->state) {
|
634 |
case sd_standby_state:
|
635 |
if (sd->rca != rca)
|
636 |
return sd_r0;
|
637 |
|
638 |
sd->state = sd_transfer_state; |
639 |
return sd_r1b;
|
640 |
|
641 |
case sd_transfer_state:
|
642 |
case sd_sendingdata_state:
|
643 |
if (sd->rca == rca)
|
644 |
break;
|
645 |
|
646 |
sd->state = sd_standby_state; |
647 |
return sd_r1b;
|
648 |
|
649 |
case sd_disconnect_state:
|
650 |
if (sd->rca != rca)
|
651 |
return sd_r0;
|
652 |
|
653 |
sd->state = sd_programming_state; |
654 |
return sd_r1b;
|
655 |
|
656 |
case sd_programming_state:
|
657 |
if (sd->rca == rca)
|
658 |
break;
|
659 |
|
660 |
sd->state = sd_disconnect_state; |
661 |
return sd_r1b;
|
662 |
|
663 |
default:
|
664 |
break;
|
665 |
} |
666 |
break;
|
667 |
|
668 |
case 9: /* CMD9: SEND_CSD */ |
669 |
switch (sd->state) {
|
670 |
case sd_standby_state:
|
671 |
if (sd->rca != rca)
|
672 |
return sd_r0;
|
673 |
|
674 |
return sd_r2_s;
|
675 |
|
676 |
default:
|
677 |
break;
|
678 |
} |
679 |
break;
|
680 |
|
681 |
case 10: /* CMD10: SEND_CID */ |
682 |
switch (sd->state) {
|
683 |
case sd_standby_state:
|
684 |
if (sd->rca != rca)
|
685 |
return sd_r0;
|
686 |
|
687 |
return sd_r2_i;
|
688 |
|
689 |
default:
|
690 |
break;
|
691 |
} |
692 |
break;
|
693 |
|
694 |
case 11: /* CMD11: READ_DAT_UNTIL_STOP */ |
695 |
switch (sd->state) {
|
696 |
case sd_transfer_state:
|
697 |
sd->state = sd_sendingdata_state; |
698 |
sd->data_start = req.arg; |
699 |
sd->data_offset = 0;
|
700 |
|
701 |
if (sd->data_start + sd->blk_len > sd->size)
|
702 |
sd->card_status |= ADDRESS_ERROR; |
703 |
return sd_r0;
|
704 |
|
705 |
default:
|
706 |
break;
|
707 |
} |
708 |
break;
|
709 |
|
710 |
case 12: /* CMD12: STOP_TRANSMISSION */ |
711 |
switch (sd->state) {
|
712 |
case sd_sendingdata_state:
|
713 |
sd->state = sd_transfer_state; |
714 |
return sd_r1b;
|
715 |
|
716 |
case sd_receivingdata_state:
|
717 |
sd->state = sd_programming_state; |
718 |
/* Bzzzzzzztt .... Operation complete. */
|
719 |
sd->state = sd_transfer_state; |
720 |
return sd_r1b;
|
721 |
|
722 |
default:
|
723 |
break;
|
724 |
} |
725 |
break;
|
726 |
|
727 |
case 13: /* CMD13: SEND_STATUS */ |
728 |
switch (sd->mode) {
|
729 |
case sd_data_transfer_mode:
|
730 |
if (sd->rca != rca)
|
731 |
return sd_r0;
|
732 |
|
733 |
return sd_r1;
|
734 |
|
735 |
default:
|
736 |
break;
|
737 |
} |
738 |
break;
|
739 |
|
740 |
case 15: /* CMD15: GO_INACTIVE_STATE */ |
741 |
switch (sd->mode) {
|
742 |
case sd_data_transfer_mode:
|
743 |
if (sd->rca != rca)
|
744 |
return sd_r0;
|
745 |
|
746 |
sd->state = sd_inactive_state; |
747 |
return sd_r0;
|
748 |
|
749 |
default:
|
750 |
break;
|
751 |
} |
752 |
break;
|
753 |
|
754 |
/* Block read commands (Classs 2) */
|
755 |
case 16: /* CMD16: SET_BLOCKLEN */ |
756 |
switch (sd->state) {
|
757 |
case sd_transfer_state:
|
758 |
if (req.arg > (1 << HWBLOCK_SHIFT)) |
759 |
sd->card_status |= BLOCK_LEN_ERROR; |
760 |
else
|
761 |
sd->blk_len = req.arg; |
762 |
|
763 |
return sd_r1;
|
764 |
|
765 |
default:
|
766 |
break;
|
767 |
} |
768 |
break;
|
769 |
|
770 |
case 17: /* CMD17: READ_SINGLE_BLOCK */ |
771 |
switch (sd->state) {
|
772 |
case sd_transfer_state:
|
773 |
sd->state = sd_sendingdata_state; |
774 |
sd->data_start = req.arg; |
775 |
sd->data_offset = 0;
|
776 |
|
777 |
if (sd->data_start + sd->blk_len > sd->size)
|
778 |
sd->card_status |= ADDRESS_ERROR; |
779 |
return sd_r1;
|
780 |
|
781 |
default:
|
782 |
break;
|
783 |
} |
784 |
break;
|
785 |
|
786 |
case 18: /* CMD18: READ_MULTIPLE_BLOCK */ |
787 |
switch (sd->state) {
|
788 |
case sd_transfer_state:
|
789 |
sd->state = sd_sendingdata_state; |
790 |
sd->data_start = req.arg; |
791 |
sd->data_offset = 0;
|
792 |
|
793 |
if (sd->data_start + sd->blk_len > sd->size)
|
794 |
sd->card_status |= ADDRESS_ERROR; |
795 |
return sd_r1;
|
796 |
|
797 |
default:
|
798 |
break;
|
799 |
} |
800 |
break;
|
801 |
|
802 |
/* Block write commands (Class 4) */
|
803 |
case 24: /* CMD24: WRITE_SINGLE_BLOCK */ |
804 |
switch (sd->state) {
|
805 |
case sd_transfer_state:
|
806 |
sd->state = sd_receivingdata_state; |
807 |
sd->data_start = req.arg; |
808 |
sd->data_offset = 0;
|
809 |
sd->blk_written = 0;
|
810 |
|
811 |
if (sd->data_start + sd->blk_len > sd->size)
|
812 |
sd->card_status |= ADDRESS_ERROR; |
813 |
if (sd_wp_addr(sd, sd->data_start))
|
814 |
sd->card_status |= WP_VIOLATION; |
815 |
if (sd->csd[14] & 0x30) |
816 |
sd->card_status |= WP_VIOLATION; |
817 |
return sd_r1;
|
818 |
|
819 |
default:
|
820 |
break;
|
821 |
} |
822 |
break;
|
823 |
|
824 |
case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ |
825 |
switch (sd->state) {
|
826 |
case sd_transfer_state:
|
827 |
sd->state = sd_receivingdata_state; |
828 |
sd->data_start = req.arg; |
829 |
sd->data_offset = 0;
|
830 |
sd->blk_written = 0;
|
831 |
|
832 |
if (sd->data_start + sd->blk_len > sd->size)
|
833 |
sd->card_status |= ADDRESS_ERROR; |
834 |
if (sd_wp_addr(sd, sd->data_start))
|
835 |
sd->card_status |= WP_VIOLATION; |
836 |
if (sd->csd[14] & 0x30) |
837 |
sd->card_status |= WP_VIOLATION; |
838 |
return sd_r1;
|
839 |
|
840 |
default:
|
841 |
break;
|
842 |
} |
843 |
break;
|
844 |
|
845 |
case 26: /* CMD26: PROGRAM_CID */ |
846 |
switch (sd->state) {
|
847 |
case sd_transfer_state:
|
848 |
sd->state = sd_receivingdata_state; |
849 |
sd->data_start = 0;
|
850 |
sd->data_offset = 0;
|
851 |
return sd_r1;
|
852 |
|
853 |
default:
|
854 |
break;
|
855 |
} |
856 |
break;
|
857 |
|
858 |
case 27: /* CMD27: PROGRAM_CSD */ |
859 |
switch (sd->state) {
|
860 |
case sd_transfer_state:
|
861 |
sd->state = sd_receivingdata_state; |
862 |
sd->data_start = 0;
|
863 |
sd->data_offset = 0;
|
864 |
return sd_r1;
|
865 |
|
866 |
default:
|
867 |
break;
|
868 |
} |
869 |
break;
|
870 |
|
871 |
/* Write protection (Class 6) */
|
872 |
case 28: /* CMD28: SET_WRITE_PROT */ |
873 |
switch (sd->state) {
|
874 |
case sd_transfer_state:
|
875 |
if (req.arg >= sd->size) {
|
876 |
sd->card_status = ADDRESS_ERROR; |
877 |
return sd_r1b;
|
878 |
} |
879 |
|
880 |
sd->state = sd_programming_state; |
881 |
sd->wp_groups[req.arg >> (HWBLOCK_SHIFT + |
882 |
SECTOR_SHIFT + WPGROUP_SHIFT)] = 1;
|
883 |
/* Bzzzzzzztt .... Operation complete. */
|
884 |
sd->state = sd_transfer_state; |
885 |
return sd_r1b;
|
886 |
|
887 |
default:
|
888 |
break;
|
889 |
} |
890 |
break;
|
891 |
|
892 |
case 29: /* CMD29: CLR_WRITE_PROT */ |
893 |
switch (sd->state) {
|
894 |
case sd_transfer_state:
|
895 |
if (req.arg >= sd->size) {
|
896 |
sd->card_status = ADDRESS_ERROR; |
897 |
return sd_r1b;
|
898 |
} |
899 |
|
900 |
sd->state = sd_programming_state; |
901 |
sd->wp_groups[req.arg >> (HWBLOCK_SHIFT + |
902 |
SECTOR_SHIFT + WPGROUP_SHIFT)] = 0;
|
903 |
/* Bzzzzzzztt .... Operation complete. */
|
904 |
sd->state = sd_transfer_state; |
905 |
return sd_r1b;
|
906 |
|
907 |
default:
|
908 |
break;
|
909 |
} |
910 |
break;
|
911 |
|
912 |
case 30: /* CMD30: SEND_WRITE_PROT */ |
913 |
switch (sd->state) {
|
914 |
case sd_transfer_state:
|
915 |
sd->state = sd_sendingdata_state; |
916 |
*(uint32_t *) sd->data = sd_wpbits(sd, req.arg); |
917 |
sd->data_start = req.arg; |
918 |
sd->data_offset = 0;
|
919 |
return sd_r1b;
|
920 |
|
921 |
default:
|
922 |
break;
|
923 |
} |
924 |
break;
|
925 |
|
926 |
/* Erase commands (Class 5) */
|
927 |
case 32: /* CMD32: ERASE_WR_BLK_START */ |
928 |
switch (sd->state) {
|
929 |
case sd_transfer_state:
|
930 |
sd->erase_start = req.arg; |
931 |
return sd_r1;
|
932 |
|
933 |
default:
|
934 |
break;
|
935 |
} |
936 |
break;
|
937 |
|
938 |
case 33: /* CMD33: ERASE_WR_BLK_END */ |
939 |
switch (sd->state) {
|
940 |
case sd_transfer_state:
|
941 |
sd->erase_end = req.arg; |
942 |
return sd_r1;
|
943 |
|
944 |
default:
|
945 |
break;
|
946 |
} |
947 |
break;
|
948 |
|
949 |
case 38: /* CMD38: ERASE */ |
950 |
switch (sd->state) {
|
951 |
case sd_transfer_state:
|
952 |
if (sd->csd[14] & 0x30) { |
953 |
sd->card_status |= WP_VIOLATION; |
954 |
return sd_r1b;
|
955 |
} |
956 |
|
957 |
sd->state = sd_programming_state; |
958 |
sd_erase(sd); |
959 |
/* Bzzzzzzztt .... Operation complete. */
|
960 |
sd->state = sd_transfer_state; |
961 |
return sd_r1b;
|
962 |
|
963 |
default:
|
964 |
break;
|
965 |
} |
966 |
break;
|
967 |
|
968 |
/* Lock card commands (Class 7) */
|
969 |
case 42: /* CMD42: LOCK_UNLOCK */ |
970 |
switch (sd->state) {
|
971 |
case sd_transfer_state:
|
972 |
sd->state = sd_receivingdata_state; |
973 |
sd->data_start = 0;
|
974 |
sd->data_offset = 0;
|
975 |
return sd_r1;
|
976 |
|
977 |
default:
|
978 |
break;
|
979 |
} |
980 |
break;
|
981 |
|
982 |
/* Application specific commands (Class 8) */
|
983 |
case 55: /* CMD55: APP_CMD */ |
984 |
if (sd->rca != rca)
|
985 |
return sd_r0;
|
986 |
|
987 |
sd->card_status |= APP_CMD; |
988 |
return sd_r1;
|
989 |
|
990 |
case 56: /* CMD56: GEN_CMD */ |
991 |
printf("SD: GEN_CMD 0x%08x\n", req.arg);
|
992 |
|
993 |
switch (sd->state) {
|
994 |
case sd_transfer_state:
|
995 |
sd->data_offset = 0;
|
996 |
if (req.arg & 1) |
997 |
sd->state = sd_sendingdata_state; |
998 |
else
|
999 |
sd->state = sd_receivingdata_state; |
1000 |
return sd_r1;
|
1001 |
|
1002 |
default:
|
1003 |
break;
|
1004 |
} |
1005 |
break;
|
1006 |
|
1007 |
default:
|
1008 |
sd->card_status |= ILLEGAL_COMMAND; |
1009 |
|
1010 |
printf("SD: Unknown CMD%i\n", req.cmd);
|
1011 |
return sd_r0;
|
1012 |
} |
1013 |
|
1014 |
sd->card_status |= ILLEGAL_COMMAND; |
1015 |
printf("SD: CMD%i in a wrong state\n", req.cmd);
|
1016 |
return sd_r0;
|
1017 |
} |
1018 |
|
1019 |
static sd_rsp_type_t sd_app_command(SDState *sd,
|
1020 |
struct sd_request_s req) {
|
1021 |
uint32_t rca; |
1022 |
|
1023 |
if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc)
|
1024 |
rca = req.arg >> 16;
|
1025 |
|
1026 |
DPRINTF("ACMD%d 0x%08x\n", req.cmd, req.arg);
|
1027 |
switch (req.cmd) {
|
1028 |
case 6: /* ACMD6: SET_BUS_WIDTH */ |
1029 |
switch (sd->state) {
|
1030 |
case sd_transfer_state:
|
1031 |
sd->sd_status[0] &= 0x3f; |
1032 |
sd->sd_status[0] |= (req.arg & 0x03) << 6; |
1033 |
return sd_r1;
|
1034 |
|
1035 |
default:
|
1036 |
break;
|
1037 |
} |
1038 |
break;
|
1039 |
|
1040 |
case 13: /* ACMD13: SD_STATUS */ |
1041 |
switch (sd->state) {
|
1042 |
case sd_transfer_state:
|
1043 |
sd->data_start = 0;
|
1044 |
sd->data_offset = 0;
|
1045 |
return sd_r1;
|
1046 |
|
1047 |
default:
|
1048 |
break;
|
1049 |
} |
1050 |
break;
|
1051 |
|
1052 |
case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ |
1053 |
switch (sd->state) {
|
1054 |
case sd_transfer_state:
|
1055 |
*(uint32_t *) sd->data = sd->blk_written; |
1056 |
|
1057 |
sd->data_start = 0;
|
1058 |
sd->data_offset = 0;
|
1059 |
return sd_r1;
|
1060 |
|
1061 |
default:
|
1062 |
break;
|
1063 |
} |
1064 |
break;
|
1065 |
|
1066 |
case 23: /* ACMD23: SET_WR_BLK_ERASE_COUNT */ |
1067 |
switch (sd->state) {
|
1068 |
case sd_transfer_state:
|
1069 |
return sd_r1;
|
1070 |
|
1071 |
default:
|
1072 |
break;
|
1073 |
} |
1074 |
break;
|
1075 |
|
1076 |
case 41: /* ACMD41: SD_APP_OP_COND */ |
1077 |
switch (sd->state) {
|
1078 |
case sd_idle_state:
|
1079 |
/* We accept any voltage. 10000 V is nothing. */
|
1080 |
if (req.arg)
|
1081 |
sd->state = sd_ready_state; |
1082 |
|
1083 |
return sd_r3;
|
1084 |
|
1085 |
default:
|
1086 |
break;
|
1087 |
} |
1088 |
break;
|
1089 |
|
1090 |
case 42: /* ACMD42: SET_CLR_CARD_DETECT */ |
1091 |
switch (sd->state) {
|
1092 |
case sd_transfer_state:
|
1093 |
/* Bringing in the 50KOhm pull-up resistor... Done. */
|
1094 |
return sd_r1;
|
1095 |
|
1096 |
default:
|
1097 |
break;
|
1098 |
} |
1099 |
break;
|
1100 |
|
1101 |
case 51: /* ACMD51: SEND_SCR */ |
1102 |
switch (sd->state) {
|
1103 |
case sd_transfer_state:
|
1104 |
sd->state = sd_sendingdata_state; |
1105 |
sd->data_start = 0;
|
1106 |
sd->data_offset = 0;
|
1107 |
return sd_r1;
|
1108 |
|
1109 |
default:
|
1110 |
break;
|
1111 |
} |
1112 |
break;
|
1113 |
|
1114 |
default:
|
1115 |
/* Fall back to standard commands. */
|
1116 |
sd->card_status &= ~APP_CMD; |
1117 |
return sd_normal_command(sd, req);
|
1118 |
} |
1119 |
|
1120 |
printf("SD: ACMD%i in a wrong state\n", req.cmd);
|
1121 |
return sd_r0;
|
1122 |
} |
1123 |
|
1124 |
int sd_do_command(SDState *sd, struct sd_request_s *req, |
1125 |
uint8_t *response) { |
1126 |
uint32_t last_status = sd->card_status; |
1127 |
sd_rsp_type_t rtype; |
1128 |
int rsplen;
|
1129 |
|
1130 |
if (!bdrv_is_inserted(sd->bdrv)) {
|
1131 |
return 0; |
1132 |
} |
1133 |
|
1134 |
if (sd_req_crc_validate(req)) {
|
1135 |
sd->card_status &= ~COM_CRC_ERROR; |
1136 |
return 0; |
1137 |
} |
1138 |
|
1139 |
sd->card_status &= ~CARD_STATUS_B; |
1140 |
sd_set_status(sd); |
1141 |
|
1142 |
if (last_status & CARD_IS_LOCKED)
|
1143 |
if (((last_status & APP_CMD) &&
|
1144 |
req->cmd == 41) ||
|
1145 |
(!(last_status & APP_CMD) && |
1146 |
(sd_cmd_class[req->cmd] == 0 ||
|
1147 |
sd_cmd_class[req->cmd] == 7 ||
|
1148 |
req->cmd == 16 || req->cmd == 55))) { |
1149 |
sd->card_status |= ILLEGAL_COMMAND; |
1150 |
printf("SD: Card is locked\n");
|
1151 |
return 0; |
1152 |
} |
1153 |
|
1154 |
if (last_status & APP_CMD) {
|
1155 |
rtype = sd_app_command(sd, *req); |
1156 |
sd->card_status &= ~APP_CMD; |
1157 |
} else
|
1158 |
rtype = sd_normal_command(sd, *req); |
1159 |
|
1160 |
sd->current_cmd = req->cmd; |
1161 |
|
1162 |
switch (rtype) {
|
1163 |
case sd_r1:
|
1164 |
case sd_r1b:
|
1165 |
sd_response_r1_make(sd, response, last_status); |
1166 |
rsplen = 4;
|
1167 |
break;
|
1168 |
|
1169 |
case sd_r2_i:
|
1170 |
memcpy(response, sd->cid, sizeof(sd->cid));
|
1171 |
response[7] |= 1; |
1172 |
rsplen = 16;
|
1173 |
break;
|
1174 |
|
1175 |
case sd_r2_s:
|
1176 |
memcpy(response, sd->csd, sizeof(sd->csd));
|
1177 |
response[7] |= 1; |
1178 |
rsplen = 16;
|
1179 |
break;
|
1180 |
|
1181 |
case sd_r3:
|
1182 |
sd_response_r3_make(sd, response); |
1183 |
rsplen = 4;
|
1184 |
break;
|
1185 |
|
1186 |
case sd_r6:
|
1187 |
sd_response_r6_make(sd, response); |
1188 |
rsplen = 4;
|
1189 |
break;
|
1190 |
|
1191 |
case sd_r0:
|
1192 |
default:
|
1193 |
rsplen = 0;
|
1194 |
break;
|
1195 |
} |
1196 |
|
1197 |
if (sd->card_status & ILLEGAL_COMMAND)
|
1198 |
rsplen = 0;
|
1199 |
|
1200 |
#ifdef DEBUG_SD
|
1201 |
if (rsplen) {
|
1202 |
int i;
|
1203 |
DPRINTF("Response:");
|
1204 |
for (i = 0; i < rsplen; i++) |
1205 |
printf(" %02x", response[i]);
|
1206 |
printf(" state %d\n", sd->state);
|
1207 |
} else {
|
1208 |
DPRINTF("No response %d\n", sd->state);
|
1209 |
} |
1210 |
#endif
|
1211 |
|
1212 |
return rsplen;
|
1213 |
} |
1214 |
|
1215 |
/* No real need for 64 bit addresses here */
|
1216 |
static void sd_blk_read(BlockDriverState *bdrv, |
1217 |
void *data, uint32_t addr, uint32_t len)
|
1218 |
{ |
1219 |
uint8_t buf[512];
|
1220 |
uint32_t end = addr + len; |
1221 |
|
1222 |
if (!bdrv || bdrv_read(bdrv, addr >> 9, buf, 1) == -1) { |
1223 |
printf("sd_blk_read: read error on host side\n");
|
1224 |
return;
|
1225 |
} |
1226 |
|
1227 |
if (end > (addr & ~511) + 512) { |
1228 |
memcpy(data, buf + (addr & 511), 512 - (addr & 511)); |
1229 |
|
1230 |
if (bdrv_read(bdrv, end >> 9, buf, 1) == -1) { |
1231 |
printf("sd_blk_read: read error on host side\n");
|
1232 |
return;
|
1233 |
} |
1234 |
memcpy(data + 512 - (addr & 511), buf, end & 511); |
1235 |
} else
|
1236 |
memcpy(data, buf + (addr & 511), len);
|
1237 |
} |
1238 |
|
1239 |
static void sd_blk_write(BlockDriverState *bdrv, |
1240 |
void *data, uint32_t addr, uint32_t len)
|
1241 |
{ |
1242 |
uint8_t buf[512];
|
1243 |
uint32_t end = addr + len; |
1244 |
|
1245 |
if ((addr & 511) || len < 512) |
1246 |
if (!bdrv || bdrv_read(bdrv, addr >> 9, buf, 1) == -1) { |
1247 |
printf("sd_blk_write: read error on host side\n");
|
1248 |
return;
|
1249 |
} |
1250 |
|
1251 |
if (end > (addr & ~511) + 512) { |
1252 |
memcpy(buf + (addr & 511), data, 512 - (addr & 511)); |
1253 |
if (bdrv_write(bdrv, addr >> 9, buf, 1) == -1) { |
1254 |
printf("sd_blk_write: write error on host side\n");
|
1255 |
return;
|
1256 |
} |
1257 |
|
1258 |
if (bdrv_read(bdrv, end >> 9, buf, 1) == -1) { |
1259 |
printf("sd_blk_write: read error on host side\n");
|
1260 |
return;
|
1261 |
} |
1262 |
memcpy(buf, data + 512 - (addr & 511), end & 511); |
1263 |
if (bdrv_write(bdrv, end >> 9, buf, 1) == -1) |
1264 |
printf("sd_blk_write: write error on host side\n");
|
1265 |
} else {
|
1266 |
memcpy(buf + (addr & 511), data, len);
|
1267 |
if (!bdrv || bdrv_write(bdrv, addr >> 9, buf, 1) == -1) |
1268 |
printf("sd_blk_write: write error on host side\n");
|
1269 |
} |
1270 |
} |
1271 |
|
1272 |
#define BLK_READ_BLOCK(a, len) sd_blk_read(sd->bdrv, sd->data, a, len)
|
1273 |
#define BLK_WRITE_BLOCK(a, len) sd_blk_write(sd->bdrv, sd->data, a, len)
|
1274 |
#define APP_READ_BLOCK(a, len) memset(sd->data, 0xec, len) |
1275 |
#define APP_WRITE_BLOCK(a, len)
|
1276 |
|
1277 |
void sd_write_data(SDState *sd, uint8_t value)
|
1278 |
{ |
1279 |
int i;
|
1280 |
|
1281 |
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv))
|
1282 |
return;
|
1283 |
|
1284 |
if (sd->state != sd_receivingdata_state) {
|
1285 |
printf("sd_write_data: not in Receiving-Data state\n");
|
1286 |
return;
|
1287 |
} |
1288 |
|
1289 |
if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
|
1290 |
return;
|
1291 |
|
1292 |
switch (sd->current_cmd) {
|
1293 |
case 24: /* CMD24: WRITE_SINGLE_BLOCK */ |
1294 |
sd->data[sd->data_offset ++] = value; |
1295 |
if (sd->data_offset >= sd->blk_len) {
|
1296 |
/* TODO: Check CRC before committing */
|
1297 |
sd->state = sd_programming_state; |
1298 |
BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); |
1299 |
sd->blk_written ++; |
1300 |
sd->csd[14] |= 0x40; |
1301 |
/* Bzzzzzzztt .... Operation complete. */
|
1302 |
sd->state = sd_transfer_state; |
1303 |
} |
1304 |
break;
|
1305 |
|
1306 |
case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ |
1307 |
sd->data[sd->data_offset ++] = value; |
1308 |
if (sd->data_offset >= sd->blk_len) {
|
1309 |
/* TODO: Check CRC before committing */
|
1310 |
sd->state = sd_programming_state; |
1311 |
BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); |
1312 |
sd->blk_written ++; |
1313 |
sd->data_start += sd->blk_len; |
1314 |
sd->data_offset = 0;
|
1315 |
if (sd->data_start + sd->blk_len > sd->size) {
|
1316 |
sd->card_status |= ADDRESS_ERROR; |
1317 |
break;
|
1318 |
} |
1319 |
if (sd_wp_addr(sd, sd->data_start)) {
|
1320 |
sd->card_status |= WP_VIOLATION; |
1321 |
break;
|
1322 |
} |
1323 |
sd->csd[14] |= 0x40; |
1324 |
|
1325 |
/* Bzzzzzzztt .... Operation complete. */
|
1326 |
sd->state = sd_receivingdata_state; |
1327 |
} |
1328 |
break;
|
1329 |
|
1330 |
case 26: /* CMD26: PROGRAM_CID */ |
1331 |
sd->data[sd->data_offset ++] = value; |
1332 |
if (sd->data_offset >= sizeof(sd->cid)) { |
1333 |
/* TODO: Check CRC before committing */
|
1334 |
sd->state = sd_programming_state; |
1335 |
for (i = 0; i < sizeof(sd->cid); i ++) |
1336 |
if ((sd->cid[i] | 0x00) != sd->data[i]) |
1337 |
sd->card_status |= CID_CSD_OVERWRITE; |
1338 |
|
1339 |
if (!(sd->card_status & CID_CSD_OVERWRITE))
|
1340 |
for (i = 0; i < sizeof(sd->cid); i ++) { |
1341 |
sd->cid[i] |= 0x00;
|
1342 |
sd->cid[i] &= sd->data[i]; |
1343 |
} |
1344 |
/* Bzzzzzzztt .... Operation complete. */
|
1345 |
sd->state = sd_transfer_state; |
1346 |
} |
1347 |
break;
|
1348 |
|
1349 |
case 27: /* CMD27: PROGRAM_CSD */ |
1350 |
sd->data[sd->data_offset ++] = value; |
1351 |
if (sd->data_offset >= sizeof(sd->csd)) { |
1352 |
/* TODO: Check CRC before committing */
|
1353 |
sd->state = sd_programming_state; |
1354 |
for (i = 0; i < sizeof(sd->csd); i ++) |
1355 |
if ((sd->csd[i] | sd_csd_rw_mask[i]) !=
|
1356 |
(sd->data[i] | sd_csd_rw_mask[i])) |
1357 |
sd->card_status |= CID_CSD_OVERWRITE; |
1358 |
|
1359 |
/* Copy flag (OTP) & Permanent write protect */
|
1360 |
if (sd->csd[14] & ~sd->data[14] & 0x60) |
1361 |
sd->card_status |= CID_CSD_OVERWRITE; |
1362 |
|
1363 |
if (!(sd->card_status & CID_CSD_OVERWRITE))
|
1364 |
for (i = 0; i < sizeof(sd->csd); i ++) { |
1365 |
sd->csd[i] |= sd_csd_rw_mask[i]; |
1366 |
sd->csd[i] &= sd->data[i]; |
1367 |
} |
1368 |
/* Bzzzzzzztt .... Operation complete. */
|
1369 |
sd->state = sd_transfer_state; |
1370 |
} |
1371 |
break;
|
1372 |
|
1373 |
case 42: /* CMD42: LOCK_UNLOCK */ |
1374 |
sd->data[sd->data_offset ++] = value; |
1375 |
if (sd->data_offset >= sd->blk_len) {
|
1376 |
/* TODO: Check CRC before committing */
|
1377 |
sd->state = sd_programming_state; |
1378 |
sd_lock_command(sd); |
1379 |
/* Bzzzzzzztt .... Operation complete. */
|
1380 |
sd->state = sd_transfer_state; |
1381 |
} |
1382 |
break;
|
1383 |
|
1384 |
case 56: /* CMD56: GEN_CMD */ |
1385 |
sd->data[sd->data_offset ++] = value; |
1386 |
if (sd->data_offset >= sd->blk_len) {
|
1387 |
APP_WRITE_BLOCK(sd->data_start, sd->data_offset); |
1388 |
sd->state = sd_transfer_state; |
1389 |
} |
1390 |
break;
|
1391 |
|
1392 |
default:
|
1393 |
printf("sd_write_data: unknown command\n");
|
1394 |
break;
|
1395 |
} |
1396 |
} |
1397 |
|
1398 |
uint8_t sd_read_data(SDState *sd) |
1399 |
{ |
1400 |
/* TODO: Append CRCs */
|
1401 |
uint8_t ret; |
1402 |
|
1403 |
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv))
|
1404 |
return 0x00; |
1405 |
|
1406 |
if (sd->state != sd_sendingdata_state) {
|
1407 |
printf("sd_read_data: not in Sending-Data state\n");
|
1408 |
return 0x00; |
1409 |
} |
1410 |
|
1411 |
if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
|
1412 |
return 0x00; |
1413 |
|
1414 |
switch (sd->current_cmd) {
|
1415 |
case 6: /* CMD6: SWITCH_FUNCTION */ |
1416 |
ret = sd->data[sd->data_offset ++]; |
1417 |
|
1418 |
if (sd->data_offset >= 64) |
1419 |
sd->state = sd_transfer_state; |
1420 |
break;
|
1421 |
|
1422 |
case 11: /* CMD11: READ_DAT_UNTIL_STOP */ |
1423 |
if (sd->data_offset == 0) |
1424 |
BLK_READ_BLOCK(sd->data_start, sd->blk_len); |
1425 |
ret = sd->data[sd->data_offset ++]; |
1426 |
|
1427 |
if (sd->data_offset >= sd->blk_len) {
|
1428 |
sd->data_start += sd->blk_len; |
1429 |
sd->data_offset = 0;
|
1430 |
if (sd->data_start + sd->blk_len > sd->size) {
|
1431 |
sd->card_status |= ADDRESS_ERROR; |
1432 |
break;
|
1433 |
} |
1434 |
} |
1435 |
break;
|
1436 |
|
1437 |
case 13: /* ACMD13: SD_STATUS */ |
1438 |
ret = sd->sd_status[sd->data_offset ++]; |
1439 |
|
1440 |
if (sd->data_offset >= sizeof(sd->sd_status)) |
1441 |
sd->state = sd_transfer_state; |
1442 |
break;
|
1443 |
|
1444 |
case 17: /* CMD17: READ_SINGLE_BLOCK */ |
1445 |
if (sd->data_offset == 0) |
1446 |
BLK_READ_BLOCK(sd->data_start, sd->blk_len); |
1447 |
ret = sd->data[sd->data_offset ++]; |
1448 |
|
1449 |
if (sd->data_offset >= sd->blk_len)
|
1450 |
sd->state = sd_transfer_state; |
1451 |
break;
|
1452 |
|
1453 |
case 18: /* CMD18: READ_MULTIPLE_BLOCK */ |
1454 |
if (sd->data_offset == 0) |
1455 |
BLK_READ_BLOCK(sd->data_start, sd->blk_len); |
1456 |
ret = sd->data[sd->data_offset ++]; |
1457 |
|
1458 |
if (sd->data_offset >= sd->blk_len) {
|
1459 |
sd->data_start += sd->blk_len; |
1460 |
sd->data_offset = 0;
|
1461 |
if (sd->data_start + sd->blk_len > sd->size) {
|
1462 |
sd->card_status |= ADDRESS_ERROR; |
1463 |
break;
|
1464 |
} |
1465 |
} |
1466 |
break;
|
1467 |
|
1468 |
case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ |
1469 |
ret = sd->data[sd->data_offset ++]; |
1470 |
|
1471 |
if (sd->data_offset >= 4) |
1472 |
sd->state = sd_transfer_state; |
1473 |
break;
|
1474 |
|
1475 |
case 30: /* CMD30: SEND_WRITE_PROT */ |
1476 |
ret = sd->data[sd->data_offset ++]; |
1477 |
|
1478 |
if (sd->data_offset >= 4) |
1479 |
sd->state = sd_transfer_state; |
1480 |
break;
|
1481 |
|
1482 |
case 51: /* ACMD51: SEND_SCR */ |
1483 |
ret = sd->scr[sd->data_offset ++]; |
1484 |
|
1485 |
if (sd->data_offset >= sizeof(sd->scr)) |
1486 |
sd->state = sd_transfer_state; |
1487 |
break;
|
1488 |
|
1489 |
case 56: /* CMD56: GEN_CMD */ |
1490 |
if (sd->data_offset == 0) |
1491 |
APP_READ_BLOCK(sd->data_start, sd->blk_len); |
1492 |
ret = sd->data[sd->data_offset ++]; |
1493 |
|
1494 |
if (sd->data_offset >= sd->blk_len)
|
1495 |
sd->state = sd_transfer_state; |
1496 |
break;
|
1497 |
|
1498 |
default:
|
1499 |
printf("sd_read_data: unknown command\n");
|
1500 |
return 0x00; |
1501 |
} |
1502 |
|
1503 |
return ret;
|
1504 |
} |
1505 |
|
1506 |
int sd_data_ready(SDState *sd)
|
1507 |
{ |
1508 |
return sd->state == sd_sendingdata_state;
|
1509 |
} |