1 /* 2 * SD Memory Card emulation. Mostly correct for MMC too. 3 * 4 * Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the 15 * distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' 18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 19 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 20 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR 21 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 24 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 25 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 #ifndef __hw_sd_h 30 #define __hw_sd_h 1 31 32 #define OUT_OF_RANGE (1 << 31) 33 #define ADDRESS_ERROR (1 << 30) 34 #define BLOCK_LEN_ERROR (1 << 29) 35 #define ERASE_SEQ_ERROR (1 << 28) 36 #define ERASE_PARAM (1 << 27) 37 #define WP_VIOLATION (1 << 26) 38 #define CARD_IS_LOCKED (1 << 25) 39 #define LOCK_UNLOCK_FAILED (1 << 24) 40 #define COM_CRC_ERROR (1 << 23) 41 #define ILLEGAL_COMMAND (1 << 22) 42 #define CARD_ECC_FAILED (1 << 21) 43 #define CC_ERROR (1 << 20) 44 #define SD_ERROR (1 << 19) 45 #define CID_CSD_OVERWRITE (1 << 16) 46 #define WP_ERASE_SKIP (1 << 15) 47 #define CARD_ECC_DISABLED (1 << 14) 48 #define ERASE_RESET (1 << 13) 49 #define CURRENT_STATE (7 << 9) 50 #define READY_FOR_DATA (1 << 8) 51 #define APP_CMD (1 << 5) 52 #define AKE_SEQ_ERROR (1 << 3) 53 #define OCR_CCS_BITN 30 54 55 typedef enum { 56 sd_none = -1, 57 sd_bc = 0, /* broadcast -- no response */ 58 sd_bcr, /* broadcast with response */ 59 sd_ac, /* addressed -- no data transfer */ 60 sd_adtc, /* addressed with data transfer */ 61 } sd_cmd_type_t; 62 63 typedef struct { 64 uint8_t cmd; 65 uint32_t arg; 66 uint8_t crc; 67 } SDRequest; 68 69 typedef struct SDState SDState; 70 71 SDState *sd_init(BlockBackend *bs, bool is_spi); 72 int sd_do_command(SDState *sd, SDRequest *req, 73 uint8_t *response); 74 void sd_write_data(SDState *sd, uint8_t value); 75 uint8_t sd_read_data(SDState *sd); 76 void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert); 77 bool sd_data_ready(SDState *sd); 78 void sd_enable(SDState *sd, bool enable); 79 80 #endif /* __hw_sd_h */ 81