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author | Paolo Bonzini <pbonzini@redhat.com> | 2013-03-01 13:59:19 +0100 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2013-04-08 18:13:12 +0200 |
commit | 49ab747f668f421138d5b40d83fa279c4c5e278d (patch) | |
tree | 943225a04eac885aed038731adf058f2250a2f40 /hw/sd.c | |
parent | ce3b494cb504f96992f2d37ebc8f56deed202b06 (diff) | |
download | qemu-49ab747f668f421138d5b40d83fa279c4c5e278d.zip qemu-49ab747f668f421138d5b40d83fa279c4c5e278d.tar.gz qemu-49ab747f668f421138d5b40d83fa279c4c5e278d.tar.bz2 |
hw: move target-independent files to subdirectories
This patch tackles all files that are compiled once, moving
them to subdirectories of hw/.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'hw/sd.c')
-rw-r--r-- | hw/sd.c | 1764 |
1 files changed, 0 insertions, 1764 deletions
diff --git a/hw/sd.c b/hw/sd.c deleted file mode 100644 index 66c4014..0000000 --- a/hw/sd.c +++ /dev/null @@ -1,1764 +0,0 @@ -/* - * SD Memory Card emulation as defined in the "SD Memory Card Physical - * layer specification, Version 1.10." - * - * Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org> - * Copyright (c) 2007 CodeSourcery - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, - * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A - * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY - * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "hw/hw.h" -#include "block/block.h" -#include "hw/sd.h" -#include "qemu/bitmap.h" - -//#define DEBUG_SD 1 - -#ifdef DEBUG_SD -#define DPRINTF(fmt, ...) \ -do { fprintf(stderr, "SD: " fmt , ## __VA_ARGS__); } while (0) -#else -#define DPRINTF(fmt, ...) do {} while(0) -#endif - -typedef enum { - sd_r0 = 0, /* no response */ - sd_r1, /* normal response command */ - sd_r2_i, /* CID register */ - sd_r2_s, /* CSD register */ - sd_r3, /* OCR register */ - sd_r6 = 6, /* Published RCA response */ - sd_r7, /* Operating voltage */ - sd_r1b = -1, - sd_illegal = -2, -} sd_rsp_type_t; - -enum SDCardModes { - sd_inactive, - sd_card_identification_mode, - sd_data_transfer_mode, -}; - -enum SDCardStates { - sd_inactive_state = -1, - sd_idle_state = 0, - sd_ready_state, - sd_identification_state, - sd_standby_state, - sd_transfer_state, - sd_sendingdata_state, - sd_receivingdata_state, - sd_programming_state, - sd_disconnect_state, -}; - -struct SDState { - uint32_t mode; /* current card mode, one of SDCardModes */ - int32_t state; /* current card state, one of SDCardStates */ - uint32_t ocr; - uint8_t scr[8]; - uint8_t cid[16]; - uint8_t csd[16]; - uint16_t rca; - uint32_t card_status; - uint8_t sd_status[64]; - uint32_t vhs; - bool wp_switch; - unsigned long *wp_groups; - int32_t wpgrps_size; - uint64_t size; - uint32_t blk_len; - uint32_t erase_start; - uint32_t erase_end; - uint8_t pwd[16]; - uint32_t pwd_len; - uint8_t function_group[6]; - - bool spi; - uint8_t current_cmd; - /* True if we will handle the next command as an ACMD. Note that this does - * *not* track the APP_CMD status bit! - */ - bool expecting_acmd; - uint32_t blk_written; - uint64_t data_start; - uint32_t data_offset; - uint8_t data[512]; - qemu_irq readonly_cb; - qemu_irq inserted_cb; - BlockDriverState *bdrv; - uint8_t *buf; - - bool enable; -}; - -static void sd_set_mode(SDState *sd) -{ - switch (sd->state) { - case sd_inactive_state: - sd->mode = sd_inactive; - break; - - case sd_idle_state: - case sd_ready_state: - case sd_identification_state: - sd->mode = sd_card_identification_mode; - break; - - case sd_standby_state: - case sd_transfer_state: - case sd_sendingdata_state: - case sd_receivingdata_state: - case sd_programming_state: - case sd_disconnect_state: - sd->mode = sd_data_transfer_mode; - break; - } -} - -static const sd_cmd_type_t sd_cmd_type[64] = { - sd_bc, sd_none, sd_bcr, sd_bcr, sd_none, sd_none, sd_none, sd_ac, - sd_bcr, sd_ac, sd_ac, sd_adtc, sd_ac, sd_ac, sd_none, sd_ac, - sd_ac, sd_adtc, sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, - sd_adtc, sd_adtc, sd_adtc, sd_adtc, sd_ac, sd_ac, sd_adtc, sd_none, - sd_ac, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none, - sd_none, sd_none, sd_bc, sd_none, sd_none, sd_none, sd_none, sd_none, - sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, - sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, -}; - -static const sd_cmd_type_t sd_acmd_type[64] = { - sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none, - sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, - sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_ac, - sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, - sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, - sd_none, sd_bcr, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_none, - sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, sd_none, sd_none, - sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, -}; - -static const int sd_cmd_class[64] = { - 0, 0, 0, 0, 0, 9, 10, 0, 0, 0, 0, 1, 0, 0, 0, 0, - 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 6, 6, 6, 6, - 5, 5, 10, 10, 10, 10, 5, 9, 9, 9, 7, 7, 7, 7, 7, 7, - 7, 7, 10, 7, 9, 9, 9, 8, 8, 10, 8, 8, 8, 8, 8, 8, -}; - -static uint8_t sd_crc7(void *message, size_t width) -{ - int i, bit; - uint8_t shift_reg = 0x00; - uint8_t *msg = (uint8_t *) message; - - for (i = 0; i < width; i ++, msg ++) - for (bit = 7; bit >= 0; bit --) { - shift_reg <<= 1; - if ((shift_reg >> 7) ^ ((*msg >> bit) & 1)) - shift_reg ^= 0x89; - } - - return shift_reg; -} - -static uint16_t sd_crc16(void *message, size_t width) -{ - int i, bit; - uint16_t shift_reg = 0x0000; - uint16_t *msg = (uint16_t *) message; - width <<= 1; - - for (i = 0; i < width; i ++, msg ++) - for (bit = 15; bit >= 0; bit --) { - shift_reg <<= 1; - if ((shift_reg >> 15) ^ ((*msg >> bit) & 1)) - shift_reg ^= 0x1011; - } - - return shift_reg; -} - -static void sd_set_ocr(SDState *sd) -{ - /* All voltages OK, card power-up OK, Standard Capacity SD Memory Card */ - sd->ocr = 0x80ffff00; -} - -static void sd_set_scr(SDState *sd) -{ - sd->scr[0] = 0x00; /* SCR Structure */ - sd->scr[1] = 0x2f; /* SD Security Support */ - sd->scr[2] = 0x00; - sd->scr[3] = 0x00; - sd->scr[4] = 0x00; - sd->scr[5] = 0x00; - sd->scr[6] = 0x00; - sd->scr[7] = 0x00; -} - -#define MID 0xaa -#define OID "XY" -#define PNM "QEMU!" -#define PRV 0x01 -#define MDT_YR 2006 -#define MDT_MON 2 - -static void sd_set_cid(SDState *sd) -{ - sd->cid[0] = MID; /* Fake card manufacturer ID (MID) */ - sd->cid[1] = OID[0]; /* OEM/Application ID (OID) */ - sd->cid[2] = OID[1]; - sd->cid[3] = PNM[0]; /* Fake product name (PNM) */ - sd->cid[4] = PNM[1]; - sd->cid[5] = PNM[2]; - sd->cid[6] = PNM[3]; - sd->cid[7] = PNM[4]; - sd->cid[8] = PRV; /* Fake product revision (PRV) */ - sd->cid[9] = 0xde; /* Fake serial number (PSN) */ - sd->cid[10] = 0xad; - sd->cid[11] = 0xbe; - sd->cid[12] = 0xef; - sd->cid[13] = 0x00 | /* Manufacture date (MDT) */ - ((MDT_YR - 2000) / 10); - sd->cid[14] = ((MDT_YR % 10) << 4) | MDT_MON; - sd->cid[15] = (sd_crc7(sd->cid, 15) << 1) | 1; -} - -#define HWBLOCK_SHIFT 9 /* 512 bytes */ -#define SECTOR_SHIFT 5 /* 16 kilobytes */ -#define WPGROUP_SHIFT 7 /* 2 megs */ -#define CMULT_SHIFT 9 /* 512 times HWBLOCK_SIZE */ -#define WPGROUP_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) - -static const uint8_t sd_csd_rw_mask[16] = { - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xfe, -}; - -static void sd_set_csd(SDState *sd, uint64_t size) -{ - uint32_t csize = (size >> (CMULT_SHIFT + HWBLOCK_SHIFT)) - 1; - uint32_t sectsize = (1 << (SECTOR_SHIFT + 1)) - 1; - uint32_t wpsize = (1 << (WPGROUP_SHIFT + 1)) - 1; - - if (size <= 0x40000000) { /* Standard Capacity SD */ - sd->csd[0] = 0x00; /* CSD structure */ - sd->csd[1] = 0x26; /* Data read access-time-1 */ - sd->csd[2] = 0x00; /* Data read access-time-2 */ - sd->csd[3] = 0x5a; /* Max. data transfer rate */ - sd->csd[4] = 0x5f; /* Card Command Classes */ - sd->csd[5] = 0x50 | /* Max. read data block length */ - HWBLOCK_SHIFT; - sd->csd[6] = 0xe0 | /* Partial block for read allowed */ - ((csize >> 10) & 0x03); - sd->csd[7] = 0x00 | /* Device size */ - ((csize >> 2) & 0xff); - sd->csd[8] = 0x3f | /* Max. read current */ - ((csize << 6) & 0xc0); - sd->csd[9] = 0xfc | /* Max. write current */ - ((CMULT_SHIFT - 2) >> 1); - sd->csd[10] = 0x40 | /* Erase sector size */ - (((CMULT_SHIFT - 2) << 7) & 0x80) | (sectsize >> 1); - sd->csd[11] = 0x00 | /* Write protect group size */ - ((sectsize << 7) & 0x80) | wpsize; - sd->csd[12] = 0x90 | /* Write speed factor */ - (HWBLOCK_SHIFT >> 2); - sd->csd[13] = 0x20 | /* Max. write data block length */ - ((HWBLOCK_SHIFT << 6) & 0xc0); - sd->csd[14] = 0x00; /* File format group */ - sd->csd[15] = (sd_crc7(sd->csd, 15) << 1) | 1; - } else { /* SDHC */ - size /= 512 * 1024; - size -= 1; - sd->csd[0] = 0x40; - sd->csd[1] = 0x0e; - sd->csd[2] = 0x00; - sd->csd[3] = 0x32; - sd->csd[4] = 0x5b; - sd->csd[5] = 0x59; - sd->csd[6] = 0x00; - sd->csd[7] = (size >> 16) & 0xff; - sd->csd[8] = (size >> 8) & 0xff; - sd->csd[9] = (size & 0xff); - sd->csd[10] = 0x7f; - sd->csd[11] = 0x80; - sd->csd[12] = 0x0a; - sd->csd[13] = 0x40; - sd->csd[14] = 0x00; - sd->csd[15] = 0x00; - sd->ocr |= 1 << 30; /* High Capacity SD Memort Card */ - } -} - -static void sd_set_rca(SDState *sd) -{ - sd->rca += 0x4567; -} - -/* Card status bits, split by clear condition: - * A : According to the card current state - * B : Always related to the previous command - * C : Cleared by read - */ -#define CARD_STATUS_A 0x02004100 -#define CARD_STATUS_B 0x00c01e00 -#define CARD_STATUS_C 0xfd39a028 - -static void sd_set_cardstatus(SDState *sd) -{ - sd->card_status = 0x00000100; -} - -static void sd_set_sdstatus(SDState *sd) -{ - memset(sd->sd_status, 0, 64); -} - -static int sd_req_crc_validate(SDRequest *req) -{ - uint8_t buffer[5]; - buffer[0] = 0x40 | req->cmd; - buffer[1] = (req->arg >> 24) & 0xff; - buffer[2] = (req->arg >> 16) & 0xff; - buffer[3] = (req->arg >> 8) & 0xff; - buffer[4] = (req->arg >> 0) & 0xff; - return 0; - return sd_crc7(buffer, 5) != req->crc; /* TODO */ -} - -static void sd_response_r1_make(SDState *sd, uint8_t *response) -{ - uint32_t status = sd->card_status; - /* Clear the "clear on read" status bits */ - sd->card_status &= ~CARD_STATUS_C; - - response[0] = (status >> 24) & 0xff; - response[1] = (status >> 16) & 0xff; - response[2] = (status >> 8) & 0xff; - response[3] = (status >> 0) & 0xff; -} - -static void sd_response_r3_make(SDState *sd, uint8_t *response) -{ - response[0] = (sd->ocr >> 24) & 0xff; - response[1] = (sd->ocr >> 16) & 0xff; - response[2] = (sd->ocr >> 8) & 0xff; - response[3] = (sd->ocr >> 0) & 0xff; -} - -static void sd_response_r6_make(SDState *sd, uint8_t *response) -{ - uint16_t arg; - uint16_t status; - - arg = sd->rca; - status = ((sd->card_status >> 8) & 0xc000) | - ((sd->card_status >> 6) & 0x2000) | - (sd->card_status & 0x1fff); - sd->card_status &= ~(CARD_STATUS_C & 0xc81fff); - - response[0] = (arg >> 8) & 0xff; - response[1] = arg & 0xff; - response[2] = (status >> 8) & 0xff; - response[3] = status & 0xff; -} - -static void sd_response_r7_make(SDState *sd, uint8_t *response) -{ - response[0] = (sd->vhs >> 24) & 0xff; - response[1] = (sd->vhs >> 16) & 0xff; - response[2] = (sd->vhs >> 8) & 0xff; - response[3] = (sd->vhs >> 0) & 0xff; -} - -static inline uint64_t sd_addr_to_wpnum(uint64_t addr) -{ - return addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); -} - -static void sd_reset(SDState *sd, BlockDriverState *bdrv) -{ - uint64_t size; - uint64_t sect; - - if (bdrv) { - bdrv_get_geometry(bdrv, §); - } else { - sect = 0; - } - size = sect << 9; - - sect = sd_addr_to_wpnum(size) + 1; - - sd->state = sd_idle_state; - sd->rca = 0x0000; - sd_set_ocr(sd); - sd_set_scr(sd); - sd_set_cid(sd); - sd_set_csd(sd, size); - sd_set_cardstatus(sd); - sd_set_sdstatus(sd); - - sd->bdrv = bdrv; - - if (sd->wp_groups) - g_free(sd->wp_groups); - sd->wp_switch = bdrv ? bdrv_is_read_only(bdrv) : false; - sd->wpgrps_size = sect; - sd->wp_groups = bitmap_new(sd->wpgrps_size); - memset(sd->function_group, 0, sizeof(sd->function_group)); - sd->erase_start = 0; - sd->erase_end = 0; - sd->size = size; - sd->blk_len = 0x200; - sd->pwd_len = 0; - sd->expecting_acmd = false; -} - -static void sd_cardchange(void *opaque, bool load) -{ - SDState *sd = opaque; - - qemu_set_irq(sd->inserted_cb, bdrv_is_inserted(sd->bdrv)); - if (bdrv_is_inserted(sd->bdrv)) { - sd_reset(sd, sd->bdrv); - qemu_set_irq(sd->readonly_cb, sd->wp_switch); - } -} - -static const BlockDevOps sd_block_ops = { - .change_media_cb = sd_cardchange, -}; - -static const VMStateDescription sd_vmstate = { - .name = "sd-card", - .version_id = 1, - .minimum_version_id = 1, - .fields = (VMStateField[]) { - VMSTATE_UINT32(mode, SDState), - VMSTATE_INT32(state, SDState), - VMSTATE_UINT8_ARRAY(cid, SDState, 16), - VMSTATE_UINT8_ARRAY(csd, SDState, 16), - VMSTATE_UINT16(rca, SDState), - VMSTATE_UINT32(card_status, SDState), - VMSTATE_PARTIAL_BUFFER(sd_status, SDState, 1), - VMSTATE_UINT32(vhs, SDState), - VMSTATE_BITMAP(wp_groups, SDState, 0, wpgrps_size), - VMSTATE_UINT32(blk_len, SDState), - VMSTATE_UINT32(erase_start, SDState), - VMSTATE_UINT32(erase_end, SDState), - VMSTATE_UINT8_ARRAY(pwd, SDState, 16), - VMSTATE_UINT32(pwd_len, SDState), - VMSTATE_UINT8_ARRAY(function_group, SDState, 6), - VMSTATE_UINT8(current_cmd, SDState), - VMSTATE_BOOL(expecting_acmd, SDState), - VMSTATE_UINT32(blk_written, SDState), - VMSTATE_UINT64(data_start, SDState), - VMSTATE_UINT32(data_offset, SDState), - VMSTATE_UINT8_ARRAY(data, SDState, 512), - VMSTATE_BUFFER_POINTER_UNSAFE(buf, SDState, 1, 512), - VMSTATE_BOOL(enable, SDState), - VMSTATE_END_OF_LIST() - } -}; - -/* We do not model the chip select pin, so allow the board to select - whether card should be in SSI or MMC/SD mode. It is also up to the - board to ensure that ssi transfers only occur when the chip select - is asserted. */ -SDState *sd_init(BlockDriverState *bs, bool is_spi) -{ - SDState *sd; - - sd = (SDState *) g_malloc0(sizeof(SDState)); - sd->buf = qemu_blockalign(bs, 512); - sd->spi = is_spi; - sd->enable = true; - sd_reset(sd, bs); - if (sd->bdrv) { - bdrv_attach_dev_nofail(sd->bdrv, sd); - bdrv_set_dev_ops(sd->bdrv, &sd_block_ops, sd); - } - vmstate_register(NULL, -1, &sd_vmstate, sd); - return sd; -} - -void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert) -{ - sd->readonly_cb = readonly; - sd->inserted_cb = insert; - qemu_set_irq(readonly, sd->bdrv ? bdrv_is_read_only(sd->bdrv) : 0); - qemu_set_irq(insert, sd->bdrv ? bdrv_is_inserted(sd->bdrv) : 0); -} - -static void sd_erase(SDState *sd) -{ - int i; - uint64_t erase_start = sd->erase_start; - uint64_t erase_end = sd->erase_end; - - if (!sd->erase_start || !sd->erase_end) { - sd->card_status |= ERASE_SEQ_ERROR; - return; - } - - if (extract32(sd->ocr, OCR_CCS_BITN, 1)) { - /* High capacity memory card: erase units are 512 byte blocks */ - erase_start *= 512; - erase_end *= 512; - } - - erase_start = sd_addr_to_wpnum(erase_start); - erase_end = sd_addr_to_wpnum(erase_end); - sd->erase_start = 0; - sd->erase_end = 0; - sd->csd[14] |= 0x40; - - for (i = erase_start; i <= erase_end; i++) { - if (test_bit(i, sd->wp_groups)) { - sd->card_status |= WP_ERASE_SKIP; - } - } -} - -static uint32_t sd_wpbits(SDState *sd, uint64_t addr) -{ - uint32_t i, wpnum; - uint32_t ret = 0; - - wpnum = sd_addr_to_wpnum(addr); - - for (i = 0; i < 32; i++, wpnum++, addr += WPGROUP_SIZE) { - if (addr < sd->size && test_bit(wpnum, sd->wp_groups)) { - ret |= (1 << i); - } - } - - return ret; -} - -static void sd_function_switch(SDState *sd, uint32_t arg) -{ - int i, mode, new_func, crc; - mode = !!(arg & 0x80000000); - - sd->data[0] = 0x00; /* Maximum current consumption */ - sd->data[1] = 0x01; - sd->data[2] = 0x80; /* Supported group 6 functions */ - sd->data[3] = 0x01; - sd->data[4] = 0x80; /* Supported group 5 functions */ - sd->data[5] = 0x01; - sd->data[6] = 0x80; /* Supported group 4 functions */ - sd->data[7] = 0x01; - sd->data[8] = 0x80; /* Supported group 3 functions */ - sd->data[9] = 0x01; - sd->data[10] = 0x80; /* Supported group 2 functions */ - sd->data[11] = 0x43; - sd->data[12] = 0x80; /* Supported group 1 functions */ - sd->data[13] = 0x03; - for (i = 0; i < 6; i ++) { - new_func = (arg >> (i * 4)) & 0x0f; - if (mode && new_func != 0x0f) - sd->function_group[i] = new_func; - sd->data[14 + (i >> 1)] = new_func << ((i * 4) & 4); - } - memset(&sd->data[17], 0, 47); - crc = sd_crc16(sd->data, 64); - sd->data[65] = crc >> 8; - sd->data[66] = crc & 0xff; -} - -static inline bool sd_wp_addr(SDState *sd, uint64_t addr) -{ - return test_bit(sd_addr_to_wpnum(addr), sd->wp_groups); -} - -static void sd_lock_command(SDState *sd) -{ - int erase, lock, clr_pwd, set_pwd, pwd_len; - erase = !!(sd->data[0] & 0x08); - lock = sd->data[0] & 0x04; - clr_pwd = sd->data[0] & 0x02; - set_pwd = sd->data[0] & 0x01; - - if (sd->blk_len > 1) - pwd_len = sd->data[1]; - else - pwd_len = 0; - - if (erase) { - if (!(sd->card_status & CARD_IS_LOCKED) || sd->blk_len > 1 || - set_pwd || clr_pwd || lock || sd->wp_switch || - (sd->csd[14] & 0x20)) { - sd->card_status |= LOCK_UNLOCK_FAILED; - return; - } - bitmap_zero(sd->wp_groups, sd->wpgrps_size); - sd->csd[14] &= ~0x10; - sd->card_status &= ~CARD_IS_LOCKED; - sd->pwd_len = 0; - /* Erasing the entire card here! */ - fprintf(stderr, "SD: Card force-erased by CMD42\n"); - return; - } - - if (sd->blk_len < 2 + pwd_len || - pwd_len <= sd->pwd_len || - pwd_len > sd->pwd_len + 16) { - sd->card_status |= LOCK_UNLOCK_FAILED; - return; - } - - if (sd->pwd_len && memcmp(sd->pwd, sd->data + 2, sd->pwd_len)) { - sd->card_status |= LOCK_UNLOCK_FAILED; - return; - } - - pwd_len -= sd->pwd_len; - if ((pwd_len && !set_pwd) || - (clr_pwd && (set_pwd || lock)) || - (lock && !sd->pwd_len && !set_pwd) || - (!set_pwd && !clr_pwd && - (((sd->card_status & CARD_IS_LOCKED) && lock) || - (!(sd->card_status & CARD_IS_LOCKED) && !lock)))) { - sd->card_status |= LOCK_UNLOCK_FAILED; - return; - } - - if (set_pwd) { - memcpy(sd->pwd, sd->data + 2 + sd->pwd_len, pwd_len); - sd->pwd_len = pwd_len; - } - - if (clr_pwd) { - sd->pwd_len = 0; - } - - if (lock) - sd->card_status |= CARD_IS_LOCKED; - else - sd->card_status &= ~CARD_IS_LOCKED; -} - -static sd_rsp_type_t sd_normal_command(SDState *sd, - SDRequest req) -{ - uint32_t rca = 0x0000; - uint64_t addr = (sd->ocr & (1 << 30)) ? (uint64_t) req.arg << 9 : req.arg; - - /* Not interpreting this as an app command */ - sd->card_status &= ~APP_CMD; - - if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc) - rca = req.arg >> 16; - - DPRINTF("CMD%d 0x%08x state %d\n", req.cmd, req.arg, sd->state); - switch (req.cmd) { - /* Basic commands (Class 0 and Class 1) */ - case 0: /* CMD0: GO_IDLE_STATE */ - switch (sd->state) { - case sd_inactive_state: - return sd->spi ? sd_r1 : sd_r0; - - default: - sd->state = sd_idle_state; - sd_reset(sd, sd->bdrv); - return sd->spi ? sd_r1 : sd_r0; - } - break; - - case 1: /* CMD1: SEND_OP_CMD */ - if (!sd->spi) - goto bad_cmd; - - sd->state = sd_transfer_state; - return sd_r1; - - case 2: /* CMD2: ALL_SEND_CID */ - if (sd->spi) - goto bad_cmd; - switch (sd->state) { - case sd_ready_state: - sd->state = sd_identification_state; - return sd_r2_i; - - default: - break; - } - break; - - case 3: /* CMD3: SEND_RELATIVE_ADDR */ - if (sd->spi) - goto bad_cmd; - switch (sd->state) { - case sd_identification_state: - case sd_standby_state: - sd->state = sd_standby_state; - sd_set_rca(sd); - return sd_r6; - - default: - break; - } - break; - - case 4: /* CMD4: SEND_DSR */ - if (sd->spi) - goto bad_cmd; - switch (sd->state) { - case sd_standby_state: - break; - - default: - break; - } - break; - - case 5: /* CMD5: reserved for SDIO cards */ - return sd_illegal; - - case 6: /* CMD6: SWITCH_FUNCTION */ - if (sd->spi) - goto bad_cmd; - switch (sd->mode) { - case sd_data_transfer_mode: - sd_function_switch(sd, req.arg); - sd->state = sd_sendingdata_state; - sd->data_start = 0; - sd->data_offset = 0; - return sd_r1; - - default: - break; - } - break; - - case 7: /* CMD7: SELECT/DESELECT_CARD */ - if (sd->spi) - goto bad_cmd; - switch (sd->state) { - case sd_standby_state: - if (sd->rca != rca) - return sd_r0; - - sd->state = sd_transfer_state; - return sd_r1b; - - case sd_transfer_state: - case sd_sendingdata_state: - if (sd->rca == rca) - break; - - sd->state = sd_standby_state; - return sd_r1b; - - case sd_disconnect_state: - if (sd->rca != rca) - return sd_r0; - - sd->state = sd_programming_state; - return sd_r1b; - - case sd_programming_state: - if (sd->rca == rca) - break; - - sd->state = sd_disconnect_state; - return sd_r1b; - - default: - break; - } - break; - - case 8: /* CMD8: SEND_IF_COND */ - /* Physical Layer Specification Version 2.00 command */ - switch (sd->state) { - case sd_idle_state: - sd->vhs = 0; - - /* No response if not exactly one VHS bit is set. */ - if (!(req.arg >> 8) || (req.arg >> ffs(req.arg & ~0xff))) - return sd->spi ? sd_r7 : sd_r0; - - /* Accept. */ - sd->vhs = req.arg; - return sd_r7; - - default: - break; - } - break; - - case 9: /* CMD9: SEND_CSD */ - switch (sd->state) { - case sd_standby_state: - if (sd->rca != rca) - return sd_r0; - - return sd_r2_s; - - case sd_transfer_state: - if (!sd->spi) - break; - sd->state = sd_sendingdata_state; - memcpy(sd->data, sd->csd, 16); - sd->data_start = addr; - sd->data_offset = 0; - return sd_r1; - - default: - break; - } - break; - - case 10: /* CMD10: SEND_CID */ - switch (sd->state) { - case sd_standby_state: - if (sd->rca != rca) - return sd_r0; - - return sd_r2_i; - - case sd_transfer_state: - if (!sd->spi) - break; - sd->state = sd_sendingdata_state; - memcpy(sd->data, sd->cid, 16); - sd->data_start = addr; - sd->data_offset = 0; - return sd_r1; - - default: - break; - } - break; - - case 11: /* CMD11: READ_DAT_UNTIL_STOP */ - if (sd->spi) - goto bad_cmd; - switch (sd->state) { - case sd_transfer_state: - sd->state = sd_sendingdata_state; - sd->data_start = req.arg; - sd->data_offset = 0; - - if (sd->data_start + sd->blk_len > sd->size) - sd->card_status |= ADDRESS_ERROR; - return sd_r0; - - default: - break; - } - break; - - case 12: /* CMD12: STOP_TRANSMISSION */ - switch (sd->state) { - case sd_sendingdata_state: - sd->state = sd_transfer_state; - return sd_r1b; - - case sd_receivingdata_state: - sd->state = sd_programming_state; - /* Bzzzzzzztt .... Operation complete. */ - sd->state = sd_transfer_state; - return sd_r1b; - - default: - break; - } - break; - - case 13: /* CMD13: SEND_STATUS */ - switch (sd->mode) { - case sd_data_transfer_mode: - if (sd->rca != rca) - return sd_r0; - - return sd_r1; - - default: - break; - } - break; - - case 15: /* CMD15: GO_INACTIVE_STATE */ - if (sd->spi) - goto bad_cmd; - switch (sd->mode) { - case sd_data_transfer_mode: - if (sd->rca != rca) - return sd_r0; - - sd->state = sd_inactive_state; - return sd_r0; - - default: - break; - } - break; - - /* Block read commands (Classs 2) */ - case 16: /* CMD16: SET_BLOCKLEN */ - switch (sd->state) { - case sd_transfer_state: - if (req.arg > (1 << HWBLOCK_SHIFT)) - sd->card_status |= BLOCK_LEN_ERROR; - else - sd->blk_len = req.arg; - - return sd_r1; - - default: - break; - } - break; - - case 17: /* CMD17: READ_SINGLE_BLOCK */ - switch (sd->state) { - case sd_transfer_state: - sd->state = sd_sendingdata_state; - sd->data_start = addr; - sd->data_offset = 0; - - if (sd->data_start + sd->blk_len > sd->size) - sd->card_status |= ADDRESS_ERROR; - return sd_r1; - - default: - break; - } - break; - - case 18: /* CMD18: READ_MULTIPLE_BLOCK */ - switch (sd->state) { - case sd_transfer_state: - sd->state = sd_sendingdata_state; - sd->data_start = addr; - sd->data_offset = 0; - - if (sd->data_start + sd->blk_len > sd->size) - sd->card_status |= ADDRESS_ERROR; - return sd_r1; - - default: - break; - } - break; - - /* Block write commands (Class 4) */ - case 24: /* CMD24: WRITE_SINGLE_BLOCK */ - if (sd->spi) - goto unimplemented_cmd; - switch (sd->state) { - case sd_transfer_state: - /* Writing in SPI mode not implemented. */ - if (sd->spi) - break; - sd->state = sd_receivingdata_state; - sd->data_start = addr; - sd->data_offset = 0; - sd->blk_written = 0; - - if (sd->data_start + sd->blk_len > sd->size) - sd->card_status |= ADDRESS_ERROR; - if (sd_wp_addr(sd, sd->data_start)) - sd->card_status |= WP_VIOLATION; - if (sd->csd[14] & 0x30) - sd->card_status |= WP_VIOLATION; - return sd_r1; - - default: - break; - } - break; - - case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ - if (sd->spi) - goto unimplemented_cmd; - switch (sd->state) { - case sd_transfer_state: - /* Writing in SPI mode not implemented. */ - if (sd->spi) - break; - sd->state = sd_receivingdata_state; - sd->data_start = addr; - sd->data_offset = 0; - sd->blk_written = 0; - - if (sd->data_start + sd->blk_len > sd->size) - sd->card_status |= ADDRESS_ERROR; - if (sd_wp_addr(sd, sd->data_start)) - sd->card_status |= WP_VIOLATION; - if (sd->csd[14] & 0x30) - sd->card_status |= WP_VIOLATION; - return sd_r1; - - default: - break; - } - break; - - case 26: /* CMD26: PROGRAM_CID */ - if (sd->spi) - goto bad_cmd; - switch (sd->state) { - case sd_transfer_state: - sd->state = sd_receivingdata_state; - sd->data_start = 0; - sd->data_offset = 0; - return sd_r1; - - default: - break; - } - break; - - case 27: /* CMD27: PROGRAM_CSD */ - if (sd->spi) - goto unimplemented_cmd; - switch (sd->state) { - case sd_transfer_state: - sd->state = sd_receivingdata_state; - sd->data_start = 0; - sd->data_offset = 0; - return sd_r1; - - default: - break; - } - break; - - /* Write protection (Class 6) */ - case 28: /* CMD28: SET_WRITE_PROT */ - switch (sd->state) { - case sd_transfer_state: - if (addr >= sd->size) { - sd->card_status |= ADDRESS_ERROR; - return sd_r1b; - } - - sd->state = sd_programming_state; - set_bit(sd_addr_to_wpnum(addr), sd->wp_groups); - /* Bzzzzzzztt .... Operation complete. */ - sd->state = sd_transfer_state; - return sd_r1b; - - default: - break; - } - break; - - case 29: /* CMD29: CLR_WRITE_PROT */ - switch (sd->state) { - case sd_transfer_state: - if (addr >= sd->size) { - sd->card_status |= ADDRESS_ERROR; - return sd_r1b; - } - - sd->state = sd_programming_state; - clear_bit(sd_addr_to_wpnum(addr), sd->wp_groups); - /* Bzzzzzzztt .... Operation complete. */ - sd->state = sd_transfer_state; - return sd_r1b; - - default: - break; - } - break; - - case 30: /* CMD30: SEND_WRITE_PROT */ - switch (sd->state) { - case sd_transfer_state: - sd->state = sd_sendingdata_state; - *(uint32_t *) sd->data = sd_wpbits(sd, req.arg); - sd->data_start = addr; - sd->data_offset = 0; - return sd_r1b; - - default: - break; - } - break; - - /* Erase commands (Class 5) */ - case 32: /* CMD32: ERASE_WR_BLK_START */ - switch (sd->state) { - case sd_transfer_state: - sd->erase_start = req.arg; - return sd_r1; - - default: - break; - } - break; - - case 33: /* CMD33: ERASE_WR_BLK_END */ - switch (sd->state) { - case sd_transfer_state: - sd->erase_end = req.arg; - return sd_r1; - - default: - break; - } - break; - - case 38: /* CMD38: ERASE */ - switch (sd->state) { - case sd_transfer_state: - if (sd->csd[14] & 0x30) { - sd->card_status |= WP_VIOLATION; - return sd_r1b; - } - - sd->state = sd_programming_state; - sd_erase(sd); - /* Bzzzzzzztt .... Operation complete. */ - sd->state = sd_transfer_state; - return sd_r1b; - - default: - break; - } - break; - - /* Lock card commands (Class 7) */ - case 42: /* CMD42: LOCK_UNLOCK */ - if (sd->spi) - goto unimplemented_cmd; - switch (sd->state) { - case sd_transfer_state: - sd->state = sd_receivingdata_state; - sd->data_start = 0; - sd->data_offset = 0; - return sd_r1; - - default: - break; - } - break; - - case 52: - case 53: - /* CMD52, CMD53: reserved for SDIO cards - * (see the SDIO Simplified Specification V2.0) - * Handle as illegal command but do not complain - * on stderr, as some OSes may use these in their - * probing for presence of an SDIO card. - */ - return sd_illegal; - - /* Application specific commands (Class 8) */ - case 55: /* CMD55: APP_CMD */ - if (sd->rca != rca) - return sd_r0; - - sd->expecting_acmd = true; - sd->card_status |= APP_CMD; - return sd_r1; - - case 56: /* CMD56: GEN_CMD */ - fprintf(stderr, "SD: GEN_CMD 0x%08x\n", req.arg); - - switch (sd->state) { - case sd_transfer_state: - sd->data_offset = 0; - if (req.arg & 1) - sd->state = sd_sendingdata_state; - else - sd->state = sd_receivingdata_state; - return sd_r1; - - default: - break; - } - break; - - default: - bad_cmd: - fprintf(stderr, "SD: Unknown CMD%i\n", req.cmd); - return sd_illegal; - - unimplemented_cmd: - /* Commands that are recognised but not yet implemented in SPI mode. */ - fprintf(stderr, "SD: CMD%i not implemented in SPI mode\n", req.cmd); - return sd_illegal; - } - - fprintf(stderr, "SD: CMD%i in a wrong state\n", req.cmd); - return sd_illegal; -} - -static sd_rsp_type_t sd_app_command(SDState *sd, - SDRequest req) -{ - DPRINTF("ACMD%d 0x%08x\n", req.cmd, req.arg); - sd->card_status |= APP_CMD; - switch (req.cmd) { - case 6: /* ACMD6: SET_BUS_WIDTH */ - switch (sd->state) { - case sd_transfer_state: - sd->sd_status[0] &= 0x3f; - sd->sd_status[0] |= (req.arg & 0x03) << 6; - return sd_r1; - - default: - break; - } - break; - - case 13: /* ACMD13: SD_STATUS */ - switch (sd->state) { - case sd_transfer_state: - sd->state = sd_sendingdata_state; - sd->data_start = 0; - sd->data_offset = 0; - return sd_r1; - - default: - break; - } - break; - - case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ - switch (sd->state) { - case sd_transfer_state: - *(uint32_t *) sd->data = sd->blk_written; - - sd->state = sd_sendingdata_state; - sd->data_start = 0; - sd->data_offset = 0; - return sd_r1; - - default: - break; - } - break; - - case 23: /* ACMD23: SET_WR_BLK_ERASE_COUNT */ - switch (sd->state) { - case sd_transfer_state: - return sd_r1; - - default: - break; - } - break; - - case 41: /* ACMD41: SD_APP_OP_COND */ - if (sd->spi) { - /* SEND_OP_CMD */ - sd->state = sd_transfer_state; - return sd_r1; - } - switch (sd->state) { - case sd_idle_state: - /* We accept any voltage. 10000 V is nothing. */ - if (req.arg) - sd->state = sd_ready_state; - - return sd_r3; - - default: - break; - } - break; - - case 42: /* ACMD42: SET_CLR_CARD_DETECT */ - switch (sd->state) { - case sd_transfer_state: - /* Bringing in the 50KOhm pull-up resistor... Done. */ - return sd_r1; - - default: - break; - } - break; - - case 51: /* ACMD51: SEND_SCR */ - switch (sd->state) { - case sd_transfer_state: - sd->state = sd_sendingdata_state; - sd->data_start = 0; - sd->data_offset = 0; - return sd_r1; - - default: - break; - } - break; - - default: - /* Fall back to standard commands. */ - return sd_normal_command(sd, req); - } - - fprintf(stderr, "SD: ACMD%i in a wrong state\n", req.cmd); - return sd_illegal; -} - -static int cmd_valid_while_locked(SDState *sd, SDRequest *req) -{ - /* Valid commands in locked state: - * basic class (0) - * lock card class (7) - * CMD16 - * implicitly, the ACMD prefix CMD55 - * ACMD41 and ACMD42 - * Anything else provokes an "illegal command" response. - */ - if (sd->expecting_acmd) { - return req->cmd == 41 || req->cmd == 42; - } - if (req->cmd == 16 || req->cmd == 55) { - return 1; - } - return sd_cmd_class[req->cmd] == 0 || sd_cmd_class[req->cmd] == 7; -} - -int sd_do_command(SDState *sd, SDRequest *req, - uint8_t *response) { - int last_state; - sd_rsp_type_t rtype; - int rsplen; - - if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable) { - return 0; - } - - if (sd_req_crc_validate(req)) { - sd->card_status |= COM_CRC_ERROR; - rtype = sd_illegal; - goto send_response; - } - - if (sd->card_status & CARD_IS_LOCKED) { - if (!cmd_valid_while_locked(sd, req)) { - sd->card_status |= ILLEGAL_COMMAND; - sd->expecting_acmd = false; - fprintf(stderr, "SD: Card is locked\n"); - rtype = sd_illegal; - goto send_response; - } - } - - last_state = sd->state; - sd_set_mode(sd); - - if (sd->expecting_acmd) { - sd->expecting_acmd = false; - rtype = sd_app_command(sd, *req); - } else { - rtype = sd_normal_command(sd, *req); - } - - if (rtype == sd_illegal) { - sd->card_status |= ILLEGAL_COMMAND; - } else { - /* Valid command, we can update the 'state before command' bits. - * (Do this now so they appear in r1 responses.) - */ - sd->current_cmd = req->cmd; - sd->card_status &= ~CURRENT_STATE; - sd->card_status |= (last_state << 9); - } - -send_response: - switch (rtype) { - case sd_r1: - case sd_r1b: - sd_response_r1_make(sd, response); - rsplen = 4; - break; - - case sd_r2_i: - memcpy(response, sd->cid, sizeof(sd->cid)); - rsplen = 16; - break; - - case sd_r2_s: - memcpy(response, sd->csd, sizeof(sd->csd)); - rsplen = 16; - break; - - case sd_r3: - sd_response_r3_make(sd, response); - rsplen = 4; - break; - - case sd_r6: - sd_response_r6_make(sd, response); - rsplen = 4; - break; - - case sd_r7: - sd_response_r7_make(sd, response); - rsplen = 4; - break; - - case sd_r0: - case sd_illegal: - default: - rsplen = 0; - break; - } - - if (rtype != sd_illegal) { - /* Clear the "clear on valid command" status bits now we've - * sent any response - */ - sd->card_status &= ~CARD_STATUS_B; - } - -#ifdef DEBUG_SD - if (rsplen) { - int i; - DPRINTF("Response:"); - for (i = 0; i < rsplen; i++) - fprintf(stderr, " %02x", response[i]); - fprintf(stderr, " state %d\n", sd->state); - } else { - DPRINTF("No response %d\n", sd->state); - } -#endif - - return rsplen; -} - -static void sd_blk_read(SDState *sd, uint64_t addr, uint32_t len) -{ - uint64_t end = addr + len; - - DPRINTF("sd_blk_read: addr = 0x%08llx, len = %d\n", - (unsigned long long) addr, len); - if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) < 0) { - fprintf(stderr, "sd_blk_read: read error on host side\n"); - return; - } - - if (end > (addr & ~511) + 512) { - memcpy(sd->data, sd->buf + (addr & 511), 512 - (addr & 511)); - - if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) < 0) { - fprintf(stderr, "sd_blk_read: read error on host side\n"); - return; - } - memcpy(sd->data + 512 - (addr & 511), sd->buf, end & 511); - } else - memcpy(sd->data, sd->buf + (addr & 511), len); -} - -static void sd_blk_write(SDState *sd, uint64_t addr, uint32_t len) -{ - uint64_t end = addr + len; - - if ((addr & 511) || len < 512) - if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) < 0) { - fprintf(stderr, "sd_blk_write: read error on host side\n"); - return; - } - - if (end > (addr & ~511) + 512) { - memcpy(sd->buf + (addr & 511), sd->data, 512 - (addr & 511)); - if (bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) < 0) { - fprintf(stderr, "sd_blk_write: write error on host side\n"); - return; - } - - if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) < 0) { - fprintf(stderr, "sd_blk_write: read error on host side\n"); - return; - } - memcpy(sd->buf, sd->data + 512 - (addr & 511), end & 511); - if (bdrv_write(sd->bdrv, end >> 9, sd->buf, 1) < 0) { - fprintf(stderr, "sd_blk_write: write error on host side\n"); - } - } else { - memcpy(sd->buf + (addr & 511), sd->data, len); - if (!sd->bdrv || bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) < 0) { - fprintf(stderr, "sd_blk_write: write error on host side\n"); - } - } -} - -#define BLK_READ_BLOCK(a, len) sd_blk_read(sd, a, len) -#define BLK_WRITE_BLOCK(a, len) sd_blk_write(sd, a, len) -#define APP_READ_BLOCK(a, len) memset(sd->data, 0xec, len) -#define APP_WRITE_BLOCK(a, len) - -void sd_write_data(SDState *sd, uint8_t value) -{ - int i; - - if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable) - return; - - if (sd->state != sd_receivingdata_state) { - fprintf(stderr, "sd_write_data: not in Receiving-Data state\n"); - return; - } - - if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION)) - return; - - switch (sd->current_cmd) { - case 24: /* CMD24: WRITE_SINGLE_BLOCK */ - sd->data[sd->data_offset ++] = value; - if (sd->data_offset >= sd->blk_len) { - /* TODO: Check CRC before committing */ - sd->state = sd_programming_state; - BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); - sd->blk_written ++; - sd->csd[14] |= 0x40; - /* Bzzzzzzztt .... Operation complete. */ - sd->state = sd_transfer_state; - } - break; - - case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ - if (sd->data_offset == 0) { - /* Start of the block - lets check the address is valid */ - if (sd->data_start + sd->blk_len > sd->size) { - sd->card_status |= ADDRESS_ERROR; - break; - } - if (sd_wp_addr(sd, sd->data_start)) { - sd->card_status |= WP_VIOLATION; - break; - } - } - sd->data[sd->data_offset++] = value; - if (sd->data_offset >= sd->blk_len) { - /* TODO: Check CRC before committing */ - sd->state = sd_programming_state; - BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); - sd->blk_written++; - sd->data_start += sd->blk_len; - sd->data_offset = 0; - sd->csd[14] |= 0x40; - - /* Bzzzzzzztt .... Operation complete. */ - sd->state = sd_receivingdata_state; - } - break; - - case 26: /* CMD26: PROGRAM_CID */ - sd->data[sd->data_offset ++] = value; - if (sd->data_offset >= sizeof(sd->cid)) { - /* TODO: Check CRC before committing */ - sd->state = sd_programming_state; - for (i = 0; i < sizeof(sd->cid); i ++) - if ((sd->cid[i] | 0x00) != sd->data[i]) - sd->card_status |= CID_CSD_OVERWRITE; - - if (!(sd->card_status & CID_CSD_OVERWRITE)) - for (i = 0; i < sizeof(sd->cid); i ++) { - sd->cid[i] |= 0x00; - sd->cid[i] &= sd->data[i]; - } - /* Bzzzzzzztt .... Operation complete. */ - sd->state = sd_transfer_state; - } - break; - - case 27: /* CMD27: PROGRAM_CSD */ - sd->data[sd->data_offset ++] = value; - if (sd->data_offset >= sizeof(sd->csd)) { - /* TODO: Check CRC before committing */ - sd->state = sd_programming_state; - for (i = 0; i < sizeof(sd->csd); i ++) - if ((sd->csd[i] | sd_csd_rw_mask[i]) != - (sd->data[i] | sd_csd_rw_mask[i])) - sd->card_status |= CID_CSD_OVERWRITE; - - /* Copy flag (OTP) & Permanent write protect */ - if (sd->csd[14] & ~sd->data[14] & 0x60) - sd->card_status |= CID_CSD_OVERWRITE; - - if (!(sd->card_status & CID_CSD_OVERWRITE)) - for (i = 0; i < sizeof(sd->csd); i ++) { - sd->csd[i] |= sd_csd_rw_mask[i]; - sd->csd[i] &= sd->data[i]; - } - /* Bzzzzzzztt .... Operation complete. */ - sd->state = sd_transfer_state; - } - break; - - case 42: /* CMD42: LOCK_UNLOCK */ - sd->data[sd->data_offset ++] = value; - if (sd->data_offset >= sd->blk_len) { - /* TODO: Check CRC before committing */ - sd->state = sd_programming_state; - sd_lock_command(sd); - /* Bzzzzzzztt .... Operation complete. */ - sd->state = sd_transfer_state; - } - break; - - case 56: /* CMD56: GEN_CMD */ - sd->data[sd->data_offset ++] = value; - if (sd->data_offset >= sd->blk_len) { - APP_WRITE_BLOCK(sd->data_start, sd->data_offset); - sd->state = sd_transfer_state; - } - break; - - default: - fprintf(stderr, "sd_write_data: unknown command\n"); - break; - } -} - -uint8_t sd_read_data(SDState *sd) -{ - /* TODO: Append CRCs */ - uint8_t ret; - int io_len; - - if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable) - return 0x00; - - if (sd->state != sd_sendingdata_state) { - fprintf(stderr, "sd_read_data: not in Sending-Data state\n"); - return 0x00; - } - - if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION)) - return 0x00; - - io_len = (sd->ocr & (1 << 30)) ? 512 : sd->blk_len; - - switch (sd->current_cmd) { - case 6: /* CMD6: SWITCH_FUNCTION */ - ret = sd->data[sd->data_offset ++]; - - if (sd->data_offset >= 64) - sd->state = sd_transfer_state; - break; - - case 9: /* CMD9: SEND_CSD */ - case 10: /* CMD10: SEND_CID */ - ret = sd->data[sd->data_offset ++]; - - if (sd->data_offset >= 16) - sd->state = sd_transfer_state; - break; - - case 11: /* CMD11: READ_DAT_UNTIL_STOP */ - if (sd->data_offset == 0) - BLK_READ_BLOCK(sd->data_start, io_len); - ret = sd->data[sd->data_offset ++]; - - if (sd->data_offset >= io_len) { - sd->data_start += io_len; - sd->data_offset = 0; - if (sd->data_start + io_len > sd->size) { - sd->card_status |= ADDRESS_ERROR; - break; - } - } - break; - - case 13: /* ACMD13: SD_STATUS */ - ret = sd->sd_status[sd->data_offset ++]; - - if (sd->data_offset >= sizeof(sd->sd_status)) - sd->state = sd_transfer_state; - break; - - case 17: /* CMD17: READ_SINGLE_BLOCK */ - if (sd->data_offset == 0) - BLK_READ_BLOCK(sd->data_start, io_len); - ret = sd->data[sd->data_offset ++]; - - if (sd->data_offset >= io_len) - sd->state = sd_transfer_state; - break; - - case 18: /* CMD18: READ_MULTIPLE_BLOCK */ - if (sd->data_offset == 0) - BLK_READ_BLOCK(sd->data_start, io_len); - ret = sd->data[sd->data_offset ++]; - - if (sd->data_offset >= io_len) { - sd->data_start += io_len; - sd->data_offset = 0; - if (sd->data_start + io_len > sd->size) { - sd->card_status |= ADDRESS_ERROR; - break; - } - } - break; - - case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ - ret = sd->data[sd->data_offset ++]; - - if (sd->data_offset >= 4) - sd->state = sd_transfer_state; - break; - - case 30: /* CMD30: SEND_WRITE_PROT */ - ret = sd->data[sd->data_offset ++]; - - if (sd->data_offset >= 4) - sd->state = sd_transfer_state; - break; - - case 51: /* ACMD51: SEND_SCR */ - ret = sd->scr[sd->data_offset ++]; - - if (sd->data_offset >= sizeof(sd->scr)) - sd->state = sd_transfer_state; - break; - - case 56: /* CMD56: GEN_CMD */ - if (sd->data_offset == 0) - APP_READ_BLOCK(sd->data_start, sd->blk_len); - ret = sd->data[sd->data_offset ++]; - - if (sd->data_offset >= sd->blk_len) - sd->state = sd_transfer_state; - break; - - default: - fprintf(stderr, "sd_read_data: unknown command\n"); - return 0x00; - } - - return ret; -} - -bool sd_data_ready(SDState *sd) -{ - return sd->state == sd_sendingdata_state; -} - -void sd_enable(SDState *sd, bool enable) -{ - sd->enable = enable; -} |