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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 "hw.h" |
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#include "block.h" |
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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 { fprintf(stderr, "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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|
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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_r7, /* Operating voltage */
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sd_r1b = -1,
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} sd_rsp_type_t; |
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|
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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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uint32_t vhs; |
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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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|
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int spi;
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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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qemu_irq readonly_cb; |
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qemu_irq inserted_cb; |
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BlockDriverState *bdrv; |
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uint8_t *buf; |
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|
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int enable;
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}; |
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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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|
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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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|
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static 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_bcr, 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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static 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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|
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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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|
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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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|
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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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/* All voltages OK, card power-up OK, Standard Capacity SD Memory Card */
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sd->ocr = 0x80ffff00;
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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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|
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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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|
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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 WPGROUP_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) |
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|
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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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|
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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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|
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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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} |
| 289 |
|
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#define CARD_STATUS_A 0x02004100 |
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#define CARD_STATUS_B 0x00c01e00 |
| 292 |
#define CARD_STATUS_C 0xfd39a028 |
| 293 |
|
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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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} |
| 298 |
|
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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); |
| 302 |
} |
| 303 |
|
| 304 |
static int sd_req_crc_validate(SDRequest *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; |
| 309 |
buffer[2] = (req->arg >> 16) & 0xff; |
| 310 |
buffer[3] = (req->arg >> 8) & 0xff; |
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buffer[4] = (req->arg >> 0) & 0xff; |
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return 0; |
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return sd_crc7(buffer, 5) != req->crc; /* TODO */ |
| 314 |
} |
| 315 |
|
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static void sd_response_r1_make(SDState *sd, |
| 317 |
uint8_t *response, uint32_t last_status) |
| 318 |
{
|
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uint32_t mask = CARD_STATUS_B ^ ILLEGAL_COMMAND; |
| 320 |
uint32_t status; |
| 321 |
|
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status = (sd->card_status & ~mask) | (last_status & mask); |
| 323 |
sd->card_status &= ~CARD_STATUS_C | APP_CMD; |
| 324 |
|
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response[0] = (status >> 24) & 0xff; |
| 326 |
response[1] = (status >> 16) & 0xff; |
| 327 |
response[2] = (status >> 8) & 0xff; |
| 328 |
response[3] = (status >> 0) & 0xff; |
| 329 |
} |
| 330 |
|
| 331 |
static void sd_response_r3_make(SDState *sd, uint8_t *response) |
| 332 |
{
|
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response[0] = (sd->ocr >> 24) & 0xff; |
| 334 |
response[1] = (sd->ocr >> 16) & 0xff; |
| 335 |
response[2] = (sd->ocr >> 8) & 0xff; |
| 336 |
response[3] = (sd->ocr >> 0) & 0xff; |
| 337 |
} |
| 338 |
|
| 339 |
static void sd_response_r6_make(SDState *sd, uint8_t *response) |
| 340 |
{
|
| 341 |
uint16_t arg; |
| 342 |
uint16_t status; |
| 343 |
|
| 344 |
arg = sd->rca; |
| 345 |
status = ((sd->card_status >> 8) & 0xc000) | |
| 346 |
((sd->card_status >> 6) & 0x2000) | |
| 347 |
(sd->card_status & 0x1fff);
|
| 348 |
|
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response[0] = (arg >> 8) & 0xff; |
| 350 |
response[1] = arg & 0xff; |
| 351 |
response[2] = (status >> 8) & 0xff; |
| 352 |
response[3] = status & 0xff; |
| 353 |
} |
| 354 |
|
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static void sd_response_r7_make(SDState *sd, uint8_t *response) |
| 356 |
{
|
| 357 |
response[0] = (sd->vhs >> 24) & 0xff; |
| 358 |
response[1] = (sd->vhs >> 16) & 0xff; |
| 359 |
response[2] = (sd->vhs >> 8) & 0xff; |
| 360 |
response[3] = (sd->vhs >> 0) & 0xff; |
| 361 |
} |
| 362 |
|
| 363 |
static void sd_reset(SDState *sd, BlockDriverState *bdrv) |
| 364 |
{
|
| 365 |
uint32_t size; |
| 366 |
uint64_t sect; |
| 367 |
|
| 368 |
if (bdrv) {
|
| 369 |
bdrv_get_geometry(bdrv, §); |
| 370 |
} else {
|
| 371 |
sect = 0;
|
| 372 |
} |
| 373 |
sect <<= 9;
|
| 374 |
|
| 375 |
if (sect > 0x40000000) |
| 376 |
size = 0x40000000; /* 1 gig */ |
| 377 |
else
|
| 378 |
size = sect + 1;
|
| 379 |
|
| 380 |
sect = (size >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) + 1;
|
| 381 |
|
| 382 |
sd->state = sd_idle_state; |
| 383 |
sd->rca = 0x0000;
|
| 384 |
sd_set_ocr(sd); |
| 385 |
sd_set_scr(sd); |
| 386 |
sd_set_cid(sd); |
| 387 |
sd_set_csd(sd, size); |
| 388 |
sd_set_cardstatus(sd); |
| 389 |
sd_set_sdstatus(sd); |
| 390 |
|
| 391 |
sd->bdrv = bdrv; |
| 392 |
|
| 393 |
if (sd->wp_groups)
|
| 394 |
qemu_free(sd->wp_groups); |
| 395 |
sd->wp_switch = bdrv ? bdrv_is_read_only(bdrv) : 0;
|
| 396 |
sd->wp_groups = (int *) qemu_mallocz(sizeof(int) * sect); |
| 397 |
memset(sd->function_group, 0, sizeof(int) * 6); |
| 398 |
sd->erase_start = 0;
|
| 399 |
sd->erase_end = 0;
|
| 400 |
sd->size = size; |
| 401 |
sd->blk_len = 0x200;
|
| 402 |
sd->pwd_len = 0;
|
| 403 |
} |
| 404 |
|
| 405 |
static void sd_cardchange(void *opaque) |
| 406 |
{
|
| 407 |
SDState *sd = opaque; |
| 408 |
qemu_set_irq(sd->inserted_cb, bdrv_is_inserted(sd->bdrv)); |
| 409 |
if (bdrv_is_inserted(sd->bdrv)) {
|
| 410 |
sd_reset(sd, sd->bdrv); |
| 411 |
qemu_set_irq(sd->readonly_cb, sd->wp_switch); |
| 412 |
} |
| 413 |
} |
| 414 |
|
| 415 |
/* We do not model the chip select pin, so allow the board to select
|
| 416 |
whether card should be in SSI or MMC/SD mode. It is also up to the
|
| 417 |
board to ensure that ssi transfers only occur when the chip select
|
| 418 |
is asserted. */
|
| 419 |
SDState *sd_init(BlockDriverState *bs, int is_spi)
|
| 420 |
{
|
| 421 |
SDState *sd; |
| 422 |
|
| 423 |
sd = (SDState *) qemu_mallocz(sizeof(SDState));
|
| 424 |
sd->buf = qemu_memalign(512, 512); |
| 425 |
sd->spi = is_spi; |
| 426 |
sd->enable = 1;
|
| 427 |
sd_reset(sd, bs); |
| 428 |
if (sd->bdrv) {
|
| 429 |
bdrv_set_change_cb(sd->bdrv, sd_cardchange, sd); |
| 430 |
} |
| 431 |
return sd;
|
| 432 |
} |
| 433 |
|
| 434 |
void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert)
|
| 435 |
{
|
| 436 |
sd->readonly_cb = readonly; |
| 437 |
sd->inserted_cb = insert; |
| 438 |
qemu_set_irq(readonly, bdrv_is_read_only(sd->bdrv)); |
| 439 |
qemu_set_irq(insert, bdrv_is_inserted(sd->bdrv)); |
| 440 |
} |
| 441 |
|
| 442 |
static void sd_erase(SDState *sd) |
| 443 |
{
|
| 444 |
int i, start, end;
|
| 445 |
if (!sd->erase_start || !sd->erase_end) {
|
| 446 |
sd->card_status |= ERASE_SEQ_ERROR; |
| 447 |
return;
|
| 448 |
} |
| 449 |
|
| 450 |
start = sd->erase_start >> |
| 451 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
| 452 |
end = sd->erase_end >> |
| 453 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
| 454 |
sd->erase_start = 0;
|
| 455 |
sd->erase_end = 0;
|
| 456 |
sd->csd[14] |= 0x40; |
| 457 |
|
| 458 |
for (i = start; i <= end; i ++)
|
| 459 |
if (sd->wp_groups[i])
|
| 460 |
sd->card_status |= WP_ERASE_SKIP; |
| 461 |
} |
| 462 |
|
| 463 |
static uint32_t sd_wpbits(SDState *sd, uint32_t addr)
|
| 464 |
{
|
| 465 |
uint32_t i, wpnum; |
| 466 |
uint32_t ret = 0;
|
| 467 |
|
| 468 |
wpnum = addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
| 469 |
|
| 470 |
for (i = 0; i < 32; i ++, wpnum ++, addr += WPGROUP_SIZE) |
| 471 |
if (addr < sd->size && sd->wp_groups[wpnum])
|
| 472 |
ret |= (1 << i);
|
| 473 |
|
| 474 |
return ret;
|
| 475 |
} |
| 476 |
|
| 477 |
static void sd_function_switch(SDState *sd, uint32_t arg) |
| 478 |
{
|
| 479 |
int i, mode, new_func, crc;
|
| 480 |
mode = !!(arg & 0x80000000);
|
| 481 |
|
| 482 |
sd->data[0] = 0x00; /* Maximum current consumption */ |
| 483 |
sd->data[1] = 0x01; |
| 484 |
sd->data[2] = 0x80; /* Supported group 6 functions */ |
| 485 |
sd->data[3] = 0x01; |
| 486 |
sd->data[4] = 0x80; /* Supported group 5 functions */ |
| 487 |
sd->data[5] = 0x01; |
| 488 |
sd->data[6] = 0x80; /* Supported group 4 functions */ |
| 489 |
sd->data[7] = 0x01; |
| 490 |
sd->data[8] = 0x80; /* Supported group 3 functions */ |
| 491 |
sd->data[9] = 0x01; |
| 492 |
sd->data[10] = 0x80; /* Supported group 2 functions */ |
| 493 |
sd->data[11] = 0x43; |
| 494 |
sd->data[12] = 0x80; /* Supported group 1 functions */ |
| 495 |
sd->data[13] = 0x03; |
| 496 |
for (i = 0; i < 6; i ++) { |
| 497 |
new_func = (arg >> (i * 4)) & 0x0f; |
| 498 |
if (mode && new_func != 0x0f) |
| 499 |
sd->function_group[i] = new_func; |
| 500 |
sd->data[14 + (i >> 1)] = new_func << ((i * 4) & 4); |
| 501 |
} |
| 502 |
memset(&sd->data[17], 0, 47); |
| 503 |
crc = sd_crc16(sd->data, 64);
|
| 504 |
sd->data[65] = crc >> 8; |
| 505 |
sd->data[66] = crc & 0xff; |
| 506 |
} |
| 507 |
|
| 508 |
static inline int sd_wp_addr(SDState *sd, uint32_t addr) |
| 509 |
{
|
| 510 |
return sd->wp_groups[addr >>
|
| 511 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)]; |
| 512 |
} |
| 513 |
|
| 514 |
static void sd_lock_command(SDState *sd) |
| 515 |
{
|
| 516 |
int erase, lock, clr_pwd, set_pwd, pwd_len;
|
| 517 |
erase = !!(sd->data[0] & 0x08); |
| 518 |
lock = sd->data[0] & 0x04; |
| 519 |
clr_pwd = sd->data[0] & 0x02; |
| 520 |
set_pwd = sd->data[0] & 0x01; |
| 521 |
|
| 522 |
if (sd->blk_len > 1) |
| 523 |
pwd_len = sd->data[1];
|
| 524 |
else
|
| 525 |
pwd_len = 0;
|
| 526 |
|
| 527 |
if (erase) {
|
| 528 |
if (!(sd->card_status & CARD_IS_LOCKED) || sd->blk_len > 1 || |
| 529 |
set_pwd || clr_pwd || lock || sd->wp_switch || |
| 530 |
(sd->csd[14] & 0x20)) { |
| 531 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
| 532 |
return;
|
| 533 |
} |
| 534 |
memset(sd->wp_groups, 0, sizeof(int) * (sd->size >> |
| 535 |
(HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT))); |
| 536 |
sd->csd[14] &= ~0x10; |
| 537 |
sd->card_status &= ~CARD_IS_LOCKED; |
| 538 |
sd->pwd_len = 0;
|
| 539 |
/* Erasing the entire card here! */
|
| 540 |
fprintf(stderr, "SD: Card force-erased by CMD42\n");
|
| 541 |
return;
|
| 542 |
} |
| 543 |
|
| 544 |
if (sd->blk_len < 2 + pwd_len || |
| 545 |
pwd_len <= sd->pwd_len || |
| 546 |
pwd_len > sd->pwd_len + 16) {
|
| 547 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
| 548 |
return;
|
| 549 |
} |
| 550 |
|
| 551 |
if (sd->pwd_len && memcmp(sd->pwd, sd->data + 2, sd->pwd_len)) { |
| 552 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
| 553 |
return;
|
| 554 |
} |
| 555 |
|
| 556 |
pwd_len -= sd->pwd_len; |
| 557 |
if ((pwd_len && !set_pwd) ||
|
| 558 |
(clr_pwd && (set_pwd || lock)) || |
| 559 |
(lock && !sd->pwd_len && !set_pwd) || |
| 560 |
(!set_pwd && !clr_pwd && |
| 561 |
(((sd->card_status & CARD_IS_LOCKED) && lock) || |
| 562 |
(!(sd->card_status & CARD_IS_LOCKED) && !lock)))) {
|
| 563 |
sd->card_status |= LOCK_UNLOCK_FAILED; |
| 564 |
return;
|
| 565 |
} |
| 566 |
|
| 567 |
if (set_pwd) {
|
| 568 |
memcpy(sd->pwd, sd->data + 2 + sd->pwd_len, pwd_len);
|
| 569 |
sd->pwd_len = pwd_len; |
| 570 |
} |
| 571 |
|
| 572 |
if (clr_pwd) {
|
| 573 |
sd->pwd_len = 0;
|
| 574 |
} |
| 575 |
|
| 576 |
if (lock)
|
| 577 |
sd->card_status |= CARD_IS_LOCKED; |
| 578 |
else
|
| 579 |
sd->card_status &= ~CARD_IS_LOCKED; |
| 580 |
} |
| 581 |
|
| 582 |
static sd_rsp_type_t sd_normal_command(SDState *sd,
|
| 583 |
SDRequest req) |
| 584 |
{
|
| 585 |
uint32_t rca = 0x0000;
|
| 586 |
|
| 587 |
if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc)
|
| 588 |
rca = req.arg >> 16;
|
| 589 |
|
| 590 |
DPRINTF("CMD%d 0x%08x state %d\n", req.cmd, req.arg, sd->state);
|
| 591 |
switch (req.cmd) {
|
| 592 |
/* Basic commands (Class 0 and Class 1) */
|
| 593 |
case 0: /* CMD0: GO_IDLE_STATE */ |
| 594 |
switch (sd->state) {
|
| 595 |
case sd_inactive_state:
|
| 596 |
return sd->spi ? sd_r1 : sd_r0;
|
| 597 |
|
| 598 |
default:
|
| 599 |
sd->state = sd_idle_state; |
| 600 |
sd_reset(sd, sd->bdrv); |
| 601 |
return sd->spi ? sd_r1 : sd_r0;
|
| 602 |
} |
| 603 |
break;
|
| 604 |
|
| 605 |
case 1: /* CMD1: SEND_OP_CMD */ |
| 606 |
if (!sd->spi)
|
| 607 |
goto bad_cmd;
|
| 608 |
|
| 609 |
sd->state = sd_transfer_state; |
| 610 |
return sd_r1;
|
| 611 |
|
| 612 |
case 2: /* CMD2: ALL_SEND_CID */ |
| 613 |
if (sd->spi)
|
| 614 |
goto bad_cmd;
|
| 615 |
switch (sd->state) {
|
| 616 |
case sd_ready_state:
|
| 617 |
sd->state = sd_identification_state; |
| 618 |
return sd_r2_i;
|
| 619 |
|
| 620 |
default:
|
| 621 |
break;
|
| 622 |
} |
| 623 |
break;
|
| 624 |
|
| 625 |
case 3: /* CMD3: SEND_RELATIVE_ADDR */ |
| 626 |
if (sd->spi)
|
| 627 |
goto bad_cmd;
|
| 628 |
switch (sd->state) {
|
| 629 |
case sd_identification_state:
|
| 630 |
case sd_standby_state:
|
| 631 |
sd->state = sd_standby_state; |
| 632 |
sd_set_rca(sd); |
| 633 |
return sd_r6;
|
| 634 |
|
| 635 |
default:
|
| 636 |
break;
|
| 637 |
} |
| 638 |
break;
|
| 639 |
|
| 640 |
case 4: /* CMD4: SEND_DSR */ |
| 641 |
if (sd->spi)
|
| 642 |
goto bad_cmd;
|
| 643 |
switch (sd->state) {
|
| 644 |
case sd_standby_state:
|
| 645 |
break;
|
| 646 |
|
| 647 |
default:
|
| 648 |
break;
|
| 649 |
} |
| 650 |
break;
|
| 651 |
|
| 652 |
case 6: /* CMD6: SWITCH_FUNCTION */ |
| 653 |
if (sd->spi)
|
| 654 |
goto bad_cmd;
|
| 655 |
switch (sd->mode) {
|
| 656 |
case sd_data_transfer_mode:
|
| 657 |
sd_function_switch(sd, req.arg); |
| 658 |
sd->state = sd_sendingdata_state; |
| 659 |
sd->data_start = 0;
|
| 660 |
sd->data_offset = 0;
|
| 661 |
return sd_r1;
|
| 662 |
|
| 663 |
default:
|
| 664 |
break;
|
| 665 |
} |
| 666 |
break;
|
| 667 |
|
| 668 |
case 7: /* CMD7: SELECT/DESELECT_CARD */ |
| 669 |
if (sd->spi)
|
| 670 |
goto bad_cmd;
|
| 671 |
switch (sd->state) {
|
| 672 |
case sd_standby_state:
|
| 673 |
if (sd->rca != rca)
|
| 674 |
return sd_r0;
|
| 675 |
|
| 676 |
sd->state = sd_transfer_state; |
| 677 |
return sd_r1b;
|
| 678 |
|
| 679 |
case sd_transfer_state:
|
| 680 |
case sd_sendingdata_state:
|
| 681 |
if (sd->rca == rca)
|
| 682 |
break;
|
| 683 |
|
| 684 |
sd->state = sd_standby_state; |
| 685 |
return sd_r1b;
|
| 686 |
|
| 687 |
case sd_disconnect_state:
|
| 688 |
if (sd->rca != rca)
|
| 689 |
return sd_r0;
|
| 690 |
|
| 691 |
sd->state = sd_programming_state; |
| 692 |
return sd_r1b;
|
| 693 |
|
| 694 |
case sd_programming_state:
|
| 695 |
if (sd->rca == rca)
|
| 696 |
break;
|
| 697 |
|
| 698 |
sd->state = sd_disconnect_state; |
| 699 |
return sd_r1b;
|
| 700 |
|
| 701 |
default:
|
| 702 |
break;
|
| 703 |
} |
| 704 |
break;
|
| 705 |
|
| 706 |
case 8: /* CMD8: SEND_IF_COND */ |
| 707 |
/* Physical Layer Specification Version 2.00 command */
|
| 708 |
switch (sd->state) {
|
| 709 |
case sd_idle_state:
|
| 710 |
sd->vhs = 0;
|
| 711 |
|
| 712 |
/* No response if not exactly one VHS bit is set. */
|
| 713 |
if (!(req.arg >> 8) || (req.arg >> ffs(req.arg & ~0xff))) |
| 714 |
return sd->spi ? sd_r7 : sd_r0;
|
| 715 |
|
| 716 |
/* Accept. */
|
| 717 |
sd->vhs = req.arg; |
| 718 |
return sd_r7;
|
| 719 |
|
| 720 |
default:
|
| 721 |
break;
|
| 722 |
} |
| 723 |
break;
|
| 724 |
|
| 725 |
case 9: /* CMD9: SEND_CSD */ |
| 726 |
switch (sd->state) {
|
| 727 |
case sd_standby_state:
|
| 728 |
if (sd->rca != rca)
|
| 729 |
return sd_r0;
|
| 730 |
|
| 731 |
return sd_r2_s;
|
| 732 |
|
| 733 |
case sd_transfer_state:
|
| 734 |
if (!sd->spi)
|
| 735 |
break;
|
| 736 |
sd->state = sd_sendingdata_state; |
| 737 |
memcpy(sd->data, sd->csd, 16);
|
| 738 |
sd->data_start = req.arg; |
| 739 |
sd->data_offset = 0;
|
| 740 |
return sd_r1;
|
| 741 |
|
| 742 |
default:
|
| 743 |
break;
|
| 744 |
} |
| 745 |
break;
|
| 746 |
|
| 747 |
case 10: /* CMD10: SEND_CID */ |
| 748 |
switch (sd->state) {
|
| 749 |
case sd_standby_state:
|
| 750 |
if (sd->rca != rca)
|
| 751 |
return sd_r0;
|
| 752 |
|
| 753 |
return sd_r2_i;
|
| 754 |
|
| 755 |
case sd_transfer_state:
|
| 756 |
if (!sd->spi)
|
| 757 |
break;
|
| 758 |
sd->state = sd_sendingdata_state; |
| 759 |
memcpy(sd->data, sd->cid, 16);
|
| 760 |
sd->data_start = req.arg; |
| 761 |
sd->data_offset = 0;
|
| 762 |
return sd_r1;
|
| 763 |
|
| 764 |
default:
|
| 765 |
break;
|
| 766 |
} |
| 767 |
break;
|
| 768 |
|
| 769 |
case 11: /* CMD11: READ_DAT_UNTIL_STOP */ |
| 770 |
if (sd->spi)
|
| 771 |
goto bad_cmd;
|
| 772 |
switch (sd->state) {
|
| 773 |
case sd_transfer_state:
|
| 774 |
sd->state = sd_sendingdata_state; |
| 775 |
sd->data_start = req.arg; |
| 776 |
sd->data_offset = 0;
|
| 777 |
|
| 778 |
if (sd->data_start + sd->blk_len > sd->size)
|
| 779 |
sd->card_status |= ADDRESS_ERROR; |
| 780 |
return sd_r0;
|
| 781 |
|
| 782 |
default:
|
| 783 |
break;
|
| 784 |
} |
| 785 |
break;
|
| 786 |
|
| 787 |
case 12: /* CMD12: STOP_TRANSMISSION */ |
| 788 |
switch (sd->state) {
|
| 789 |
case sd_sendingdata_state:
|
| 790 |
sd->state = sd_transfer_state; |
| 791 |
return sd_r1b;
|
| 792 |
|
| 793 |
case sd_receivingdata_state:
|
| 794 |
sd->state = sd_programming_state; |
| 795 |
/* Bzzzzzzztt .... Operation complete. */
|
| 796 |
sd->state = sd_transfer_state; |
| 797 |
return sd_r1b;
|
| 798 |
|
| 799 |
default:
|
| 800 |
break;
|
| 801 |
} |
| 802 |
break;
|
| 803 |
|
| 804 |
case 13: /* CMD13: SEND_STATUS */ |
| 805 |
switch (sd->mode) {
|
| 806 |
case sd_data_transfer_mode:
|
| 807 |
if (sd->rca != rca)
|
| 808 |
return sd_r0;
|
| 809 |
|
| 810 |
return sd_r1;
|
| 811 |
|
| 812 |
default:
|
| 813 |
break;
|
| 814 |
} |
| 815 |
break;
|
| 816 |
|
| 817 |
case 15: /* CMD15: GO_INACTIVE_STATE */ |
| 818 |
if (sd->spi)
|
| 819 |
goto bad_cmd;
|
| 820 |
switch (sd->mode) {
|
| 821 |
case sd_data_transfer_mode:
|
| 822 |
if (sd->rca != rca)
|
| 823 |
return sd_r0;
|
| 824 |
|
| 825 |
sd->state = sd_inactive_state; |
| 826 |
return sd_r0;
|
| 827 |
|
| 828 |
default:
|
| 829 |
break;
|
| 830 |
} |
| 831 |
break;
|
| 832 |
|
| 833 |
/* Block read commands (Classs 2) */
|
| 834 |
case 16: /* CMD16: SET_BLOCKLEN */ |
| 835 |
switch (sd->state) {
|
| 836 |
case sd_transfer_state:
|
| 837 |
if (req.arg > (1 << HWBLOCK_SHIFT)) |
| 838 |
sd->card_status |= BLOCK_LEN_ERROR; |
| 839 |
else
|
| 840 |
sd->blk_len = req.arg; |
| 841 |
|
| 842 |
return sd_r1;
|
| 843 |
|
| 844 |
default:
|
| 845 |
break;
|
| 846 |
} |
| 847 |
break;
|
| 848 |
|
| 849 |
case 17: /* CMD17: READ_SINGLE_BLOCK */ |
| 850 |
switch (sd->state) {
|
| 851 |
case sd_transfer_state:
|
| 852 |
sd->state = sd_sendingdata_state; |
| 853 |
sd->data_start = req.arg; |
| 854 |
sd->data_offset = 0;
|
| 855 |
|
| 856 |
if (sd->data_start + sd->blk_len > sd->size)
|
| 857 |
sd->card_status |= ADDRESS_ERROR; |
| 858 |
return sd_r1;
|
| 859 |
|
| 860 |
default:
|
| 861 |
break;
|
| 862 |
} |
| 863 |
break;
|
| 864 |
|
| 865 |
case 18: /* CMD18: READ_MULTIPLE_BLOCK */ |
| 866 |
switch (sd->state) {
|
| 867 |
case sd_transfer_state:
|
| 868 |
sd->state = sd_sendingdata_state; |
| 869 |
sd->data_start = req.arg; |
| 870 |
sd->data_offset = 0;
|
| 871 |
|
| 872 |
if (sd->data_start + sd->blk_len > sd->size)
|
| 873 |
sd->card_status |= ADDRESS_ERROR; |
| 874 |
return sd_r1;
|
| 875 |
|
| 876 |
default:
|
| 877 |
break;
|
| 878 |
} |
| 879 |
break;
|
| 880 |
|
| 881 |
/* Block write commands (Class 4) */
|
| 882 |
case 24: /* CMD24: WRITE_SINGLE_BLOCK */ |
| 883 |
if (sd->spi)
|
| 884 |
goto unimplemented_cmd;
|
| 885 |
switch (sd->state) {
|
| 886 |
case sd_transfer_state:
|
| 887 |
/* Writing in SPI mode not implemented. */
|
| 888 |
if (sd->spi)
|
| 889 |
break;
|
| 890 |
sd->state = sd_receivingdata_state; |
| 891 |
sd->data_start = req.arg; |
| 892 |
sd->data_offset = 0;
|
| 893 |
sd->blk_written = 0;
|
| 894 |
|
| 895 |
if (sd->data_start + sd->blk_len > sd->size)
|
| 896 |
sd->card_status |= ADDRESS_ERROR; |
| 897 |
if (sd_wp_addr(sd, sd->data_start))
|
| 898 |
sd->card_status |= WP_VIOLATION; |
| 899 |
if (sd->csd[14] & 0x30) |
| 900 |
sd->card_status |= WP_VIOLATION; |
| 901 |
return sd_r1;
|
| 902 |
|
| 903 |
default:
|
| 904 |
break;
|
| 905 |
} |
| 906 |
break;
|
| 907 |
|
| 908 |
case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ |
| 909 |
if (sd->spi)
|
| 910 |
goto unimplemented_cmd;
|
| 911 |
switch (sd->state) {
|
| 912 |
case sd_transfer_state:
|
| 913 |
/* Writing in SPI mode not implemented. */
|
| 914 |
if (sd->spi)
|
| 915 |
break;
|
| 916 |
sd->state = sd_receivingdata_state; |
| 917 |
sd->data_start = req.arg; |
| 918 |
sd->data_offset = 0;
|
| 919 |
sd->blk_written = 0;
|
| 920 |
|
| 921 |
if (sd->data_start + sd->blk_len > sd->size)
|
| 922 |
sd->card_status |= ADDRESS_ERROR; |
| 923 |
if (sd_wp_addr(sd, sd->data_start))
|
| 924 |
sd->card_status |= WP_VIOLATION; |
| 925 |
if (sd->csd[14] & 0x30) |
| 926 |
sd->card_status |= WP_VIOLATION; |
| 927 |
return sd_r1;
|
| 928 |
|
| 929 |
default:
|
| 930 |
break;
|
| 931 |
} |
| 932 |
break;
|
| 933 |
|
| 934 |
case 26: /* CMD26: PROGRAM_CID */ |
| 935 |
if (sd->spi)
|
| 936 |
goto bad_cmd;
|
| 937 |
switch (sd->state) {
|
| 938 |
case sd_transfer_state:
|
| 939 |
sd->state = sd_receivingdata_state; |
| 940 |
sd->data_start = 0;
|
| 941 |
sd->data_offset = 0;
|
| 942 |
return sd_r1;
|
| 943 |
|
| 944 |
default:
|
| 945 |
break;
|
| 946 |
} |
| 947 |
break;
|
| 948 |
|
| 949 |
case 27: /* CMD27: PROGRAM_CSD */ |
| 950 |
if (sd->spi)
|
| 951 |
goto unimplemented_cmd;
|
| 952 |
switch (sd->state) {
|
| 953 |
case sd_transfer_state:
|
| 954 |
sd->state = sd_receivingdata_state; |
| 955 |
sd->data_start = 0;
|
| 956 |
sd->data_offset = 0;
|
| 957 |
return sd_r1;
|
| 958 |
|
| 959 |
default:
|
| 960 |
break;
|
| 961 |
} |
| 962 |
break;
|
| 963 |
|
| 964 |
/* Write protection (Class 6) */
|
| 965 |
case 28: /* CMD28: SET_WRITE_PROT */ |
| 966 |
switch (sd->state) {
|
| 967 |
case sd_transfer_state:
|
| 968 |
if (req.arg >= sd->size) {
|
| 969 |
sd->card_status = ADDRESS_ERROR; |
| 970 |
return sd_r1b;
|
| 971 |
} |
| 972 |
|
| 973 |
sd->state = sd_programming_state; |
| 974 |
sd->wp_groups[req.arg >> (HWBLOCK_SHIFT + |
| 975 |
SECTOR_SHIFT + WPGROUP_SHIFT)] = 1;
|
| 976 |
/* Bzzzzzzztt .... Operation complete. */
|
| 977 |
sd->state = sd_transfer_state; |
| 978 |
return sd_r1b;
|
| 979 |
|
| 980 |
default:
|
| 981 |
break;
|
| 982 |
} |
| 983 |
break;
|
| 984 |
|
| 985 |
case 29: /* CMD29: CLR_WRITE_PROT */ |
| 986 |
switch (sd->state) {
|
| 987 |
case sd_transfer_state:
|
| 988 |
if (req.arg >= sd->size) {
|
| 989 |
sd->card_status = ADDRESS_ERROR; |
| 990 |
return sd_r1b;
|
| 991 |
} |
| 992 |
|
| 993 |
sd->state = sd_programming_state; |
| 994 |
sd->wp_groups[req.arg >> (HWBLOCK_SHIFT + |
| 995 |
SECTOR_SHIFT + WPGROUP_SHIFT)] = 0;
|
| 996 |
/* Bzzzzzzztt .... Operation complete. */
|
| 997 |
sd->state = sd_transfer_state; |
| 998 |
return sd_r1b;
|
| 999 |
|
| 1000 |
default:
|
| 1001 |
break;
|
| 1002 |
} |
| 1003 |
break;
|
| 1004 |
|
| 1005 |
case 30: /* CMD30: SEND_WRITE_PROT */ |
| 1006 |
switch (sd->state) {
|
| 1007 |
case sd_transfer_state:
|
| 1008 |
sd->state = sd_sendingdata_state; |
| 1009 |
*(uint32_t *) sd->data = sd_wpbits(sd, req.arg); |
| 1010 |
sd->data_start = req.arg; |
| 1011 |
sd->data_offset = 0;
|
| 1012 |
return sd_r1b;
|
| 1013 |
|
| 1014 |
default:
|
| 1015 |
break;
|
| 1016 |
} |
| 1017 |
break;
|
| 1018 |
|
| 1019 |
/* Erase commands (Class 5) */
|
| 1020 |
case 32: /* CMD32: ERASE_WR_BLK_START */ |
| 1021 |
switch (sd->state) {
|
| 1022 |
case sd_transfer_state:
|
| 1023 |
sd->erase_start = req.arg; |
| 1024 |
return sd_r1;
|
| 1025 |
|
| 1026 |
default:
|
| 1027 |
break;
|
| 1028 |
} |
| 1029 |
break;
|
| 1030 |
|
| 1031 |
case 33: /* CMD33: ERASE_WR_BLK_END */ |
| 1032 |
switch (sd->state) {
|
| 1033 |
case sd_transfer_state:
|
| 1034 |
sd->erase_end = req.arg; |
| 1035 |
return sd_r1;
|
| 1036 |
|
| 1037 |
default:
|
| 1038 |
break;
|
| 1039 |
} |
| 1040 |
break;
|
| 1041 |
|
| 1042 |
case 38: /* CMD38: ERASE */ |
| 1043 |
switch (sd->state) {
|
| 1044 |
case sd_transfer_state:
|
| 1045 |
if (sd->csd[14] & 0x30) { |
| 1046 |
sd->card_status |= WP_VIOLATION; |
| 1047 |
return sd_r1b;
|
| 1048 |
} |
| 1049 |
|
| 1050 |
sd->state = sd_programming_state; |
| 1051 |
sd_erase(sd); |
| 1052 |
/* Bzzzzzzztt .... Operation complete. */
|
| 1053 |
sd->state = sd_transfer_state; |
| 1054 |
return sd_r1b;
|
| 1055 |
|
| 1056 |
default:
|
| 1057 |
break;
|
| 1058 |
} |
| 1059 |
break;
|
| 1060 |
|
| 1061 |
/* Lock card commands (Class 7) */
|
| 1062 |
case 42: /* CMD42: LOCK_UNLOCK */ |
| 1063 |
if (sd->spi)
|
| 1064 |
goto unimplemented_cmd;
|
| 1065 |
switch (sd->state) {
|
| 1066 |
case sd_transfer_state:
|
| 1067 |
sd->state = sd_receivingdata_state; |
| 1068 |
sd->data_start = 0;
|
| 1069 |
sd->data_offset = 0;
|
| 1070 |
return sd_r1;
|
| 1071 |
|
| 1072 |
default:
|
| 1073 |
break;
|
| 1074 |
} |
| 1075 |
break;
|
| 1076 |
|
| 1077 |
/* Application specific commands (Class 8) */
|
| 1078 |
case 55: /* CMD55: APP_CMD */ |
| 1079 |
if (sd->rca != rca)
|
| 1080 |
return sd_r0;
|
| 1081 |
|
| 1082 |
sd->card_status |= APP_CMD; |
| 1083 |
return sd_r1;
|
| 1084 |
|
| 1085 |
case 56: /* CMD56: GEN_CMD */ |
| 1086 |
fprintf(stderr, "SD: GEN_CMD 0x%08x\n", req.arg);
|
| 1087 |
|
| 1088 |
switch (sd->state) {
|
| 1089 |
case sd_transfer_state:
|
| 1090 |
sd->data_offset = 0;
|
| 1091 |
if (req.arg & 1) |
| 1092 |
sd->state = sd_sendingdata_state; |
| 1093 |
else
|
| 1094 |
sd->state = sd_receivingdata_state; |
| 1095 |
return sd_r1;
|
| 1096 |
|
| 1097 |
default:
|
| 1098 |
break;
|
| 1099 |
} |
| 1100 |
break;
|
| 1101 |
|
| 1102 |
default:
|
| 1103 |
bad_cmd:
|
| 1104 |
sd->card_status |= ILLEGAL_COMMAND; |
| 1105 |
|
| 1106 |
fprintf(stderr, "SD: Unknown CMD%i\n", req.cmd);
|
| 1107 |
return sd_r0;
|
| 1108 |
|
| 1109 |
unimplemented_cmd:
|
| 1110 |
/* Commands that are recognised but not yet implemented in SPI mode. */
|
| 1111 |
sd->card_status |= ILLEGAL_COMMAND; |
| 1112 |
fprintf(stderr, "SD: CMD%i not implemented in SPI mode\n", req.cmd);
|
| 1113 |
return sd_r0;
|
| 1114 |
} |
| 1115 |
|
| 1116 |
sd->card_status |= ILLEGAL_COMMAND; |
| 1117 |
fprintf(stderr, "SD: CMD%i in a wrong state\n", req.cmd);
|
| 1118 |
return sd_r0;
|
| 1119 |
} |
| 1120 |
|
| 1121 |
static sd_rsp_type_t sd_app_command(SDState *sd,
|
| 1122 |
SDRequest req) {
|
| 1123 |
uint32_t rca; |
| 1124 |
|
| 1125 |
if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc)
|
| 1126 |
rca = req.arg >> 16;
|
| 1127 |
|
| 1128 |
DPRINTF("ACMD%d 0x%08x\n", req.cmd, req.arg);
|
| 1129 |
switch (req.cmd) {
|
| 1130 |
case 6: /* ACMD6: SET_BUS_WIDTH */ |
| 1131 |
switch (sd->state) {
|
| 1132 |
case sd_transfer_state:
|
| 1133 |
sd->sd_status[0] &= 0x3f; |
| 1134 |
sd->sd_status[0] |= (req.arg & 0x03) << 6; |
| 1135 |
return sd_r1;
|
| 1136 |
|
| 1137 |
default:
|
| 1138 |
break;
|
| 1139 |
} |
| 1140 |
break;
|
| 1141 |
|
| 1142 |
case 13: /* ACMD13: SD_STATUS */ |
| 1143 |
switch (sd->state) {
|
| 1144 |
case sd_transfer_state:
|
| 1145 |
sd->data_start = 0;
|
| 1146 |
sd->data_offset = 0;
|
| 1147 |
return sd_r1;
|
| 1148 |
|
| 1149 |
default:
|
| 1150 |
break;
|
| 1151 |
} |
| 1152 |
break;
|
| 1153 |
|
| 1154 |
case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ |
| 1155 |
switch (sd->state) {
|
| 1156 |
case sd_transfer_state:
|
| 1157 |
*(uint32_t *) sd->data = sd->blk_written; |
| 1158 |
|
| 1159 |
sd->data_start = 0;
|
| 1160 |
sd->data_offset = 0;
|
| 1161 |
return sd_r1;
|
| 1162 |
|
| 1163 |
default:
|
| 1164 |
break;
|
| 1165 |
} |
| 1166 |
break;
|
| 1167 |
|
| 1168 |
case 23: /* ACMD23: SET_WR_BLK_ERASE_COUNT */ |
| 1169 |
switch (sd->state) {
|
| 1170 |
case sd_transfer_state:
|
| 1171 |
return sd_r1;
|
| 1172 |
|
| 1173 |
default:
|
| 1174 |
break;
|
| 1175 |
} |
| 1176 |
break;
|
| 1177 |
|
| 1178 |
case 41: /* ACMD41: SD_APP_OP_COND */ |
| 1179 |
if (sd->spi) {
|
| 1180 |
/* SEND_OP_CMD */
|
| 1181 |
sd->state = sd_transfer_state; |
| 1182 |
return sd_r1;
|
| 1183 |
} |
| 1184 |
switch (sd->state) {
|
| 1185 |
case sd_idle_state:
|
| 1186 |
/* We accept any voltage. 10000 V is nothing. */
|
| 1187 |
if (req.arg)
|
| 1188 |
sd->state = sd_ready_state; |
| 1189 |
|
| 1190 |
return sd_r3;
|
| 1191 |
|
| 1192 |
default:
|
| 1193 |
break;
|
| 1194 |
} |
| 1195 |
break;
|
| 1196 |
|
| 1197 |
case 42: /* ACMD42: SET_CLR_CARD_DETECT */ |
| 1198 |
switch (sd->state) {
|
| 1199 |
case sd_transfer_state:
|
| 1200 |
/* Bringing in the 50KOhm pull-up resistor... Done. */
|
| 1201 |
return sd_r1;
|
| 1202 |
|
| 1203 |
default:
|
| 1204 |
break;
|
| 1205 |
} |
| 1206 |
break;
|
| 1207 |
|
| 1208 |
case 51: /* ACMD51: SEND_SCR */ |
| 1209 |
switch (sd->state) {
|
| 1210 |
case sd_transfer_state:
|
| 1211 |
sd->state = sd_sendingdata_state; |
| 1212 |
sd->data_start = 0;
|
| 1213 |
sd->data_offset = 0;
|
| 1214 |
return sd_r1;
|
| 1215 |
|
| 1216 |
default:
|
| 1217 |
break;
|
| 1218 |
} |
| 1219 |
break;
|
| 1220 |
|
| 1221 |
default:
|
| 1222 |
/* Fall back to standard commands. */
|
| 1223 |
sd->card_status &= ~APP_CMD; |
| 1224 |
return sd_normal_command(sd, req);
|
| 1225 |
} |
| 1226 |
|
| 1227 |
fprintf(stderr, "SD: ACMD%i in a wrong state\n", req.cmd);
|
| 1228 |
return sd_r0;
|
| 1229 |
} |
| 1230 |
|
| 1231 |
int sd_do_command(SDState *sd, SDRequest *req,
|
| 1232 |
uint8_t *response) {
|
| 1233 |
uint32_t last_status = sd->card_status; |
| 1234 |
sd_rsp_type_t rtype; |
| 1235 |
int rsplen;
|
| 1236 |
|
| 1237 |
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable) {
|
| 1238 |
return 0; |
| 1239 |
} |
| 1240 |
|
| 1241 |
if (sd_req_crc_validate(req)) {
|
| 1242 |
sd->card_status &= ~COM_CRC_ERROR; |
| 1243 |
return 0; |
| 1244 |
} |
| 1245 |
|
| 1246 |
sd->card_status &= ~CARD_STATUS_B; |
| 1247 |
sd_set_status(sd); |
| 1248 |
|
| 1249 |
if (last_status & CARD_IS_LOCKED)
|
| 1250 |
if (((last_status & APP_CMD) &&
|
| 1251 |
req->cmd == 41) ||
|
| 1252 |
(!(last_status & APP_CMD) && |
| 1253 |
(sd_cmd_class[req->cmd] == 0 ||
|
| 1254 |
sd_cmd_class[req->cmd] == 7 ||
|
| 1255 |
req->cmd == 16 || req->cmd == 55))) { |
| 1256 |
sd->card_status |= ILLEGAL_COMMAND; |
| 1257 |
fprintf(stderr, "SD: Card is locked\n");
|
| 1258 |
return 0; |
| 1259 |
} |
| 1260 |
|
| 1261 |
if (last_status & APP_CMD) {
|
| 1262 |
rtype = sd_app_command(sd, *req); |
| 1263 |
sd->card_status &= ~APP_CMD; |
| 1264 |
} else
|
| 1265 |
rtype = sd_normal_command(sd, *req); |
| 1266 |
|
| 1267 |
sd->current_cmd = req->cmd; |
| 1268 |
|
| 1269 |
switch (rtype) {
|
| 1270 |
case sd_r1:
|
| 1271 |
case sd_r1b:
|
| 1272 |
sd_response_r1_make(sd, response, last_status); |
| 1273 |
rsplen = 4;
|
| 1274 |
break;
|
| 1275 |
|
| 1276 |
case sd_r2_i:
|
| 1277 |
memcpy(response, sd->cid, sizeof(sd->cid));
|
| 1278 |
rsplen = 16;
|
| 1279 |
break;
|
| 1280 |
|
| 1281 |
case sd_r2_s:
|
| 1282 |
memcpy(response, sd->csd, sizeof(sd->csd));
|
| 1283 |
rsplen = 16;
|
| 1284 |
break;
|
| 1285 |
|
| 1286 |
case sd_r3:
|
| 1287 |
sd_response_r3_make(sd, response); |
| 1288 |
rsplen = 4;
|
| 1289 |
break;
|
| 1290 |
|
| 1291 |
case sd_r6:
|
| 1292 |
sd_response_r6_make(sd, response); |
| 1293 |
rsplen = 4;
|
| 1294 |
break;
|
| 1295 |
|
| 1296 |
case sd_r7:
|
| 1297 |
sd_response_r7_make(sd, response); |
| 1298 |
rsplen = 4;
|
| 1299 |
break;
|
| 1300 |
|
| 1301 |
case sd_r0:
|
| 1302 |
default:
|
| 1303 |
rsplen = 0;
|
| 1304 |
break;
|
| 1305 |
} |
| 1306 |
|
| 1307 |
if (sd->card_status & ILLEGAL_COMMAND)
|
| 1308 |
rsplen = 0;
|
| 1309 |
|
| 1310 |
#ifdef DEBUG_SD
|
| 1311 |
if (rsplen) {
|
| 1312 |
int i;
|
| 1313 |
DPRINTF("Response:");
|
| 1314 |
for (i = 0; i < rsplen; i++) |
| 1315 |
printf(" %02x", response[i]);
|
| 1316 |
printf(" state %d\n", sd->state);
|
| 1317 |
} else {
|
| 1318 |
DPRINTF("No response %d\n", sd->state);
|
| 1319 |
} |
| 1320 |
#endif
|
| 1321 |
|
| 1322 |
return rsplen;
|
| 1323 |
} |
| 1324 |
|
| 1325 |
/* No real need for 64 bit addresses here */
|
| 1326 |
static void sd_blk_read(SDState *sd, uint32_t addr, uint32_t len) |
| 1327 |
{
|
| 1328 |
uint32_t end = addr + len; |
| 1329 |
|
| 1330 |
if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) == -1) { |
| 1331 |
fprintf(stderr, "sd_blk_read: read error on host side\n");
|
| 1332 |
return;
|
| 1333 |
} |
| 1334 |
|
| 1335 |
if (end > (addr & ~511) + 512) { |
| 1336 |
memcpy(sd->data, sd->buf + (addr & 511), 512 - (addr & 511)); |
| 1337 |
|
| 1338 |
if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) == -1) { |
| 1339 |
fprintf(stderr, "sd_blk_read: read error on host side\n");
|
| 1340 |
return;
|
| 1341 |
} |
| 1342 |
memcpy(sd->data + 512 - (addr & 511), sd->buf, end & 511); |
| 1343 |
} else
|
| 1344 |
memcpy(sd->data, sd->buf + (addr & 511), len);
|
| 1345 |
} |
| 1346 |
|
| 1347 |
static void sd_blk_write(SDState *sd, uint32_t addr, uint32_t len) |
| 1348 |
{
|
| 1349 |
uint32_t end = addr + len; |
| 1350 |
|
| 1351 |
if ((addr & 511) || len < 512) |
| 1352 |
if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) == -1) { |
| 1353 |
fprintf(stderr, "sd_blk_write: read error on host side\n");
|
| 1354 |
return;
|
| 1355 |
} |
| 1356 |
|
| 1357 |
if (end > (addr & ~511) + 512) { |
| 1358 |
memcpy(sd->buf + (addr & 511), sd->data, 512 - (addr & 511)); |
| 1359 |
if (bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) == -1) { |
| 1360 |
fprintf(stderr, "sd_blk_write: write error on host side\n");
|
| 1361 |
return;
|
| 1362 |
} |
| 1363 |
|
| 1364 |
if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) == -1) { |
| 1365 |
fprintf(stderr, "sd_blk_write: read error on host side\n");
|
| 1366 |
return;
|
| 1367 |
} |
| 1368 |
memcpy(sd->buf, sd->data + 512 - (addr & 511), end & 511); |
| 1369 |
if (bdrv_write(sd->bdrv, end >> 9, sd->buf, 1) == -1) |
| 1370 |
fprintf(stderr, "sd_blk_write: write error on host side\n");
|
| 1371 |
} else {
|
| 1372 |
memcpy(sd->buf + (addr & 511), sd->data, len);
|
| 1373 |
if (!sd->bdrv || bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) == -1) |
| 1374 |
fprintf(stderr, "sd_blk_write: write error on host side\n");
|
| 1375 |
} |
| 1376 |
} |
| 1377 |
|
| 1378 |
#define BLK_READ_BLOCK(a, len) sd_blk_read(sd, a, len)
|
| 1379 |
#define BLK_WRITE_BLOCK(a, len) sd_blk_write(sd, a, len)
|
| 1380 |
#define APP_READ_BLOCK(a, len) memset(sd->data, 0xec, len) |
| 1381 |
#define APP_WRITE_BLOCK(a, len)
|
| 1382 |
|
| 1383 |
void sd_write_data(SDState *sd, uint8_t value)
|
| 1384 |
{
|
| 1385 |
int i;
|
| 1386 |
|
| 1387 |
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable)
|
| 1388 |
return;
|
| 1389 |
|
| 1390 |
if (sd->state != sd_receivingdata_state) {
|
| 1391 |
fprintf(stderr, "sd_write_data: not in Receiving-Data state\n");
|
| 1392 |
return;
|
| 1393 |
} |
| 1394 |
|
| 1395 |
if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
|
| 1396 |
return;
|
| 1397 |
|
| 1398 |
switch (sd->current_cmd) {
|
| 1399 |
case 24: /* CMD24: WRITE_SINGLE_BLOCK */ |
| 1400 |
sd->data[sd->data_offset ++] = value; |
| 1401 |
if (sd->data_offset >= sd->blk_len) {
|
| 1402 |
/* TODO: Check CRC before committing */
|
| 1403 |
sd->state = sd_programming_state; |
| 1404 |
BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); |
| 1405 |
sd->blk_written ++; |
| 1406 |
sd->csd[14] |= 0x40; |
| 1407 |
/* Bzzzzzzztt .... Operation complete. */
|
| 1408 |
sd->state = sd_transfer_state; |
| 1409 |
} |
| 1410 |
break;
|
| 1411 |
|
| 1412 |
case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ |
| 1413 |
sd->data[sd->data_offset ++] = value; |
| 1414 |
if (sd->data_offset >= sd->blk_len) {
|
| 1415 |
/* TODO: Check CRC before committing */
|
| 1416 |
sd->state = sd_programming_state; |
| 1417 |
BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); |
| 1418 |
sd->blk_written ++; |
| 1419 |
sd->data_start += sd->blk_len; |
| 1420 |
sd->data_offset = 0;
|
| 1421 |
if (sd->data_start + sd->blk_len > sd->size) {
|
| 1422 |
sd->card_status |= ADDRESS_ERROR; |
| 1423 |
break;
|
| 1424 |
} |
| 1425 |
if (sd_wp_addr(sd, sd->data_start)) {
|
| 1426 |
sd->card_status |= WP_VIOLATION; |
| 1427 |
break;
|
| 1428 |
} |
| 1429 |
sd->csd[14] |= 0x40; |
| 1430 |
|
| 1431 |
/* Bzzzzzzztt .... Operation complete. */
|
| 1432 |
sd->state = sd_receivingdata_state; |
| 1433 |
} |
| 1434 |
break;
|
| 1435 |
|
| 1436 |
case 26: /* CMD26: PROGRAM_CID */ |
| 1437 |
sd->data[sd->data_offset ++] = value; |
| 1438 |
if (sd->data_offset >= sizeof(sd->cid)) { |
| 1439 |
/* TODO: Check CRC before committing */
|
| 1440 |
sd->state = sd_programming_state; |
| 1441 |
for (i = 0; i < sizeof(sd->cid); i ++) |
| 1442 |
if ((sd->cid[i] | 0x00) != sd->data[i]) |
| 1443 |
sd->card_status |= CID_CSD_OVERWRITE; |
| 1444 |
|
| 1445 |
if (!(sd->card_status & CID_CSD_OVERWRITE))
|
| 1446 |
for (i = 0; i < sizeof(sd->cid); i ++) { |
| 1447 |
sd->cid[i] |= 0x00;
|
| 1448 |
sd->cid[i] &= sd->data[i]; |
| 1449 |
} |
| 1450 |
/* Bzzzzzzztt .... Operation complete. */
|
| 1451 |
sd->state = sd_transfer_state; |
| 1452 |
} |
| 1453 |
break;
|
| 1454 |
|
| 1455 |
case 27: /* CMD27: PROGRAM_CSD */ |
| 1456 |
sd->data[sd->data_offset ++] = value; |
| 1457 |
if (sd->data_offset >= sizeof(sd->csd)) { |
| 1458 |
/* TODO: Check CRC before committing */
|
| 1459 |
sd->state = sd_programming_state; |
| 1460 |
for (i = 0; i < sizeof(sd->csd); i ++) |
| 1461 |
if ((sd->csd[i] | sd_csd_rw_mask[i]) !=
|
| 1462 |
(sd->data[i] | sd_csd_rw_mask[i])) |
| 1463 |
sd->card_status |= CID_CSD_OVERWRITE; |
| 1464 |
|
| 1465 |
/* Copy flag (OTP) & Permanent write protect */
|
| 1466 |
if (sd->csd[14] & ~sd->data[14] & 0x60) |
| 1467 |
sd->card_status |= CID_CSD_OVERWRITE; |
| 1468 |
|
| 1469 |
if (!(sd->card_status & CID_CSD_OVERWRITE))
|
| 1470 |
for (i = 0; i < sizeof(sd->csd); i ++) { |
| 1471 |
sd->csd[i] |= sd_csd_rw_mask[i]; |
| 1472 |
sd->csd[i] &= sd->data[i]; |
| 1473 |
} |
| 1474 |
/* Bzzzzzzztt .... Operation complete. */
|
| 1475 |
sd->state = sd_transfer_state; |
| 1476 |
} |
| 1477 |
break;
|
| 1478 |
|
| 1479 |
case 42: /* CMD42: LOCK_UNLOCK */ |
| 1480 |
sd->data[sd->data_offset ++] = value; |
| 1481 |
if (sd->data_offset >= sd->blk_len) {
|
| 1482 |
/* TODO: Check CRC before committing */
|
| 1483 |
sd->state = sd_programming_state; |
| 1484 |
sd_lock_command(sd); |
| 1485 |
/* Bzzzzzzztt .... Operation complete. */
|
| 1486 |
sd->state = sd_transfer_state; |
| 1487 |
} |
| 1488 |
break;
|
| 1489 |
|
| 1490 |
case 56: /* CMD56: GEN_CMD */ |
| 1491 |
sd->data[sd->data_offset ++] = value; |
| 1492 |
if (sd->data_offset >= sd->blk_len) {
|
| 1493 |
APP_WRITE_BLOCK(sd->data_start, sd->data_offset); |
| 1494 |
sd->state = sd_transfer_state; |
| 1495 |
} |
| 1496 |
break;
|
| 1497 |
|
| 1498 |
default:
|
| 1499 |
fprintf(stderr, "sd_write_data: unknown command\n");
|
| 1500 |
break;
|
| 1501 |
} |
| 1502 |
} |
| 1503 |
|
| 1504 |
uint8_t sd_read_data(SDState *sd) |
| 1505 |
{
|
| 1506 |
/* TODO: Append CRCs */
|
| 1507 |
uint8_t ret; |
| 1508 |
|
| 1509 |
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable)
|
| 1510 |
return 0x00; |
| 1511 |
|
| 1512 |
if (sd->state != sd_sendingdata_state) {
|
| 1513 |
fprintf(stderr, "sd_read_data: not in Sending-Data state\n");
|
| 1514 |
return 0x00; |
| 1515 |
} |
| 1516 |
|
| 1517 |
if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION))
|
| 1518 |
return 0x00; |
| 1519 |
|
| 1520 |
switch (sd->current_cmd) {
|
| 1521 |
case 6: /* CMD6: SWITCH_FUNCTION */ |
| 1522 |
ret = sd->data[sd->data_offset ++]; |
| 1523 |
|
| 1524 |
if (sd->data_offset >= 64) |
| 1525 |
sd->state = sd_transfer_state; |
| 1526 |
break;
|
| 1527 |
|
| 1528 |
case 9: /* CMD9: SEND_CSD */ |
| 1529 |
case 10: /* CMD10: SEND_CID */ |
| 1530 |
ret = sd->data[sd->data_offset ++]; |
| 1531 |
|
| 1532 |
if (sd->data_offset >= 16) |
| 1533 |
sd->state = sd_transfer_state; |
| 1534 |
break;
|
| 1535 |
|
| 1536 |
case 11: /* CMD11: READ_DAT_UNTIL_STOP */ |
| 1537 |
if (sd->data_offset == 0) |
| 1538 |
BLK_READ_BLOCK(sd->data_start, sd->blk_len); |
| 1539 |
ret = sd->data[sd->data_offset ++]; |
| 1540 |
|
| 1541 |
if (sd->data_offset >= sd->blk_len) {
|
| 1542 |
sd->data_start += sd->blk_len; |
| 1543 |
sd->data_offset = 0;
|
| 1544 |
if (sd->data_start + sd->blk_len > sd->size) {
|
| 1545 |
sd->card_status |= ADDRESS_ERROR; |
| 1546 |
break;
|
| 1547 |
} |
| 1548 |
} |
| 1549 |
break;
|
| 1550 |
|
| 1551 |
case 13: /* ACMD13: SD_STATUS */ |
| 1552 |
ret = sd->sd_status[sd->data_offset ++]; |
| 1553 |
|
| 1554 |
if (sd->data_offset >= sizeof(sd->sd_status)) |
| 1555 |
sd->state = sd_transfer_state; |
| 1556 |
break;
|
| 1557 |
|
| 1558 |
case 17: /* CMD17: READ_SINGLE_BLOCK */ |
| 1559 |
if (sd->data_offset == 0) |
| 1560 |
BLK_READ_BLOCK(sd->data_start, sd->blk_len); |
| 1561 |
ret = sd->data[sd->data_offset ++]; |
| 1562 |
|
| 1563 |
if (sd->data_offset >= sd->blk_len)
|
| 1564 |
sd->state = sd_transfer_state; |
| 1565 |
break;
|
| 1566 |
|
| 1567 |
case 18: /* CMD18: READ_MULTIPLE_BLOCK */ |
| 1568 |
if (sd->data_offset == 0) |
| 1569 |
BLK_READ_BLOCK(sd->data_start, sd->blk_len); |
| 1570 |
ret = sd->data[sd->data_offset ++]; |
| 1571 |
|
| 1572 |
if (sd->data_offset >= sd->blk_len) {
|
| 1573 |
sd->data_start += sd->blk_len; |
| 1574 |
sd->data_offset = 0;
|
| 1575 |
if (sd->data_start + sd->blk_len > sd->size) {
|
| 1576 |
sd->card_status |= ADDRESS_ERROR; |
| 1577 |
break;
|
| 1578 |
} |
| 1579 |
} |
| 1580 |
break;
|
| 1581 |
|
| 1582 |
case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ |
| 1583 |
ret = sd->data[sd->data_offset ++]; |
| 1584 |
|
| 1585 |
if (sd->data_offset >= 4) |
| 1586 |
sd->state = sd_transfer_state; |
| 1587 |
break;
|
| 1588 |
|
| 1589 |
case 30: /* CMD30: SEND_WRITE_PROT */ |
| 1590 |
ret = sd->data[sd->data_offset ++]; |
| 1591 |
|
| 1592 |
if (sd->data_offset >= 4) |
| 1593 |
sd->state = sd_transfer_state; |
| 1594 |
break;
|
| 1595 |
|
| 1596 |
case 51: /* ACMD51: SEND_SCR */ |
| 1597 |
ret = sd->scr[sd->data_offset ++]; |
| 1598 |
|
| 1599 |
if (sd->data_offset >= sizeof(sd->scr)) |
| 1600 |
sd->state = sd_transfer_state; |
| 1601 |
break;
|
| 1602 |
|
| 1603 |
case 56: /* CMD56: GEN_CMD */ |
| 1604 |
if (sd->data_offset == 0) |
| 1605 |
APP_READ_BLOCK(sd->data_start, sd->blk_len); |
| 1606 |
ret = sd->data[sd->data_offset ++]; |
| 1607 |
|
| 1608 |
if (sd->data_offset >= sd->blk_len)
|
| 1609 |
sd->state = sd_transfer_state; |
| 1610 |
break;
|
| 1611 |
|
| 1612 |
default:
|
| 1613 |
fprintf(stderr, "sd_read_data: unknown command\n");
|
| 1614 |
return 0x00; |
| 1615 |
} |
| 1616 |
|
| 1617 |
return ret;
|
| 1618 |
} |
| 1619 |
|
| 1620 |
int sd_data_ready(SDState *sd)
|
| 1621 |
{
|
| 1622 |
return sd->state == sd_sendingdata_state;
|
| 1623 |
} |
| 1624 |
|
| 1625 |
void sd_enable(SDState *sd, int enable) |
| 1626 |
{
|
| 1627 |
sd->enable = enable; |
| 1628 |
} |