| /* |
| * SD Memory Card emulation as defined in the "SD Memory Card Physical |
| * layer specification, Version 2.00." |
| * |
| * Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org> |
| * Copyright (c) 2007 CodeSourcery |
| * Copyright (c) 2018 Philippe Mathieu-Daudé <f4bug@amsat.org> |
| * |
| * 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 "qemu/osdep.h" |
| #include "qemu/units.h" |
| #include "qemu/cutils.h" |
| #include "hw/irq.h" |
| #include "hw/registerfields.h" |
| #include "sysemu/block-backend.h" |
| #include "hw/sd/sd.h" |
| #include "hw/sd/sdcard_legacy.h" |
| #include "migration/vmstate.h" |
| #include "qapi/error.h" |
| #include "qemu/bitmap.h" |
| #include "hw/qdev-properties.h" |
| #include "hw/qdev-properties-system.h" |
| #include "qemu/error-report.h" |
| #include "qemu/timer.h" |
| #include "qemu/log.h" |
| #include "qemu/module.h" |
| #include "sdmmc-internal.h" |
| #include "trace.h" |
| |
| //#define DEBUG_SD 1 |
| |
| #define SDSC_MAX_CAPACITY (2 * GiB) |
| |
| #define INVALID_ADDRESS UINT32_MAX |
| |
| 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, |
| }; |
| |
| typedef sd_rsp_type_t (*sd_cmd_handler)(SDState *sd, SDRequest req); |
| |
| typedef struct SDProto { |
| const char *name; |
| sd_cmd_handler cmd[SDMMC_CMD_MAX]; |
| sd_cmd_handler acmd[SDMMC_CMD_MAX]; |
| } SDProto; |
| |
| struct SDState { |
| DeviceState parent_obj; |
| |
| /* If true, created by sd_init() for a non-qdevified caller */ |
| /* TODO purge them with fire */ |
| bool me_no_qdev_me_kill_mammoth_with_rocks; |
| |
| /* SD Memory Card Registers */ |
| 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]; |
| |
| /* Static properties */ |
| |
| uint8_t spec_version; |
| BlockBackend *blk; |
| |
| /* Runtime changeables */ |
| |
| uint32_t mode; /* current card mode, one of SDCardModes */ |
| int32_t state; /* current card state, one of SDCardStates */ |
| uint32_t vhs; |
| bool wp_switch; |
| unsigned long *wp_group_bmap; |
| int32_t wp_group_bits; |
| uint64_t size; |
| uint32_t blk_len; |
| uint32_t multi_blk_cnt; |
| uint32_t erase_start; |
| uint32_t erase_end; |
| uint8_t pwd[16]; |
| uint32_t pwd_len; |
| uint8_t function_group[6]; |
| 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; |
| QEMUTimer *ocr_power_timer; |
| bool enable; |
| uint8_t dat_lines; |
| bool cmd_line; |
| }; |
| |
| static void sd_realize(DeviceState *dev, Error **errp); |
| |
| static const struct SDProto *sd_proto(SDState *sd) |
| { |
| SDCardClass *sc = SD_CARD_GET_CLASS(sd); |
| |
| return sc->proto; |
| } |
| |
| static const SDProto sd_proto_spi; |
| |
| static bool sd_is_spi(SDState *sd) |
| { |
| return sd_proto(sd) == &sd_proto_spi; |
| } |
| |
| static const char *sd_version_str(enum SDPhySpecificationVersion version) |
| { |
| static const char *sdphy_version[] = { |
| [SD_PHY_SPECv1_10_VERS] = "v1.10", |
| [SD_PHY_SPECv2_00_VERS] = "v2.00", |
| [SD_PHY_SPECv3_01_VERS] = "v3.01", |
| }; |
| if (version >= ARRAY_SIZE(sdphy_version)) { |
| return "unsupported version"; |
| } |
| return sdphy_version[version]; |
| } |
| |
| static const char *sd_state_name(enum SDCardStates state) |
| { |
| static const char *state_name[] = { |
| [sd_idle_state] = "idle", |
| [sd_ready_state] = "ready", |
| [sd_identification_state] = "identification", |
| [sd_standby_state] = "standby", |
| [sd_transfer_state] = "transfer", |
| [sd_sendingdata_state] = "sendingdata", |
| [sd_receivingdata_state] = "receivingdata", |
| [sd_programming_state] = "programming", |
| [sd_disconnect_state] = "disconnect", |
| }; |
| if (state == sd_inactive_state) { |
| return "inactive"; |
| } |
| assert(state < ARRAY_SIZE(state_name)); |
| return state_name[state]; |
| } |
| |
| static const char *sd_response_name(sd_rsp_type_t rsp) |
| { |
| static const char *response_name[] = { |
| [sd_r0] = "RESP#0 (no response)", |
| [sd_r1] = "RESP#1 (normal cmd)", |
| [sd_r2_i] = "RESP#2 (CID reg)", |
| [sd_r2_s] = "RESP#2 (CSD reg)", |
| [sd_r3] = "RESP#3 (OCR reg)", |
| [sd_r6] = "RESP#6 (RCA)", |
| [sd_r7] = "RESP#7 (operating voltage)", |
| }; |
| if (rsp == sd_illegal) { |
| return "ILLEGAL RESP"; |
| } |
| if (rsp == sd_r1b) { |
| rsp = sd_r1; |
| } |
| assert(rsp < ARRAY_SIZE(response_name)); |
| return response_name[rsp]; |
| } |
| |
| static uint8_t sd_get_dat_lines(SDState *sd) |
| { |
| return sd->enable ? sd->dat_lines : 0; |
| } |
| |
| static bool sd_get_cmd_line(SDState *sd) |
| { |
| return sd->enable ? sd->cmd_line : false; |
| } |
| |
| static void sd_set_voltage(SDState *sd, uint16_t millivolts) |
| { |
| trace_sdcard_set_voltage(millivolts); |
| |
| switch (millivolts) { |
| case 3001 ... 3600: /* SD_VOLTAGE_3_3V */ |
| case 2001 ... 3000: /* SD_VOLTAGE_3_0V */ |
| break; |
| default: |
| qemu_log_mask(LOG_GUEST_ERROR, "SD card voltage not supported: %.3fV", |
| millivolts / 1000.f); |
| } |
| } |
| |
| 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[SDMMC_CMD_MAX] = { |
| 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, |
| /* 16 */ |
| 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, |
| /* 32 */ |
| 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, |
| /* 48 */ |
| 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 int sd_cmd_class[SDMMC_CMD_MAX] = { |
| 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(const void *message, size_t width) |
| { |
| int i, bit; |
| uint8_t shift_reg = 0x00; |
| const uint8_t *msg = (const 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; |
| } |
| |
| #define OCR_POWER_DELAY_NS 500000 /* 0.5ms */ |
| |
| FIELD(OCR, VDD_VOLTAGE_WINDOW, 0, 24) |
| FIELD(OCR, VDD_VOLTAGE_WIN_LO, 0, 8) |
| FIELD(OCR, DUAL_VOLTAGE_CARD, 7, 1) |
| FIELD(OCR, VDD_VOLTAGE_WIN_HI, 8, 16) |
| FIELD(OCR, ACCEPT_SWITCH_1V8, 24, 1) /* Only UHS-I */ |
| FIELD(OCR, UHS_II_CARD, 29, 1) /* Only UHS-II */ |
| FIELD(OCR, CARD_CAPACITY, 30, 1) /* 0:SDSC, 1:SDHC/SDXC */ |
| FIELD(OCR, CARD_POWER_UP, 31, 1) |
| |
| #define ACMD41_ENQUIRY_MASK 0x00ffffff |
| #define ACMD41_R3_MASK (R_OCR_VDD_VOLTAGE_WIN_HI_MASK \ |
| | R_OCR_ACCEPT_SWITCH_1V8_MASK \ |
| | R_OCR_UHS_II_CARD_MASK \ |
| | R_OCR_CARD_CAPACITY_MASK \ |
| | R_OCR_CARD_POWER_UP_MASK) |
| |
| static void sd_ocr_powerup(void *opaque) |
| { |
| SDState *sd = opaque; |
| |
| trace_sdcard_powerup(); |
| assert(!FIELD_EX32(sd->ocr, OCR, CARD_POWER_UP)); |
| |
| /* card power-up OK */ |
| sd->ocr = FIELD_DP32(sd->ocr, OCR, CARD_POWER_UP, 1); |
| |
| if (sd->size > SDSC_MAX_CAPACITY) { |
| sd->ocr = FIELD_DP32(sd->ocr, OCR, CARD_CAPACITY, 1); |
| } |
| } |
| |
| static void sd_set_ocr(SDState *sd) |
| { |
| /* All voltages OK */ |
| sd->ocr = R_OCR_VDD_VOLTAGE_WIN_HI_MASK; |
| |
| if (sd_is_spi(sd)) { |
| /* |
| * We don't need to emulate power up sequence in SPI-mode. |
| * Thus, the card's power up status bit should be set to 1 when reset. |
| * The card's capacity status bit should also be set if SD card size |
| * is larger than 2GB for SDHC support. |
| */ |
| sd_ocr_powerup(sd); |
| } |
| } |
| |
| static void sd_set_scr(SDState *sd) |
| { |
| sd->scr[0] = 0 << 4; /* SCR structure version 1.0 */ |
| if (sd->spec_version == SD_PHY_SPECv1_10_VERS) { |
| sd->scr[0] |= 1; /* Spec Version 1.10 */ |
| } else { |
| sd->scr[0] |= 2; /* Spec Version 2.00 or Version 3.0X */ |
| } |
| sd->scr[1] = (2 << 4) /* SDSC Card (Security Version 1.01) */ |
| | 0b0101; /* 1-bit or 4-bit width bus modes */ |
| sd->scr[2] = 0x00; /* Extended Security is not supported. */ |
| if (sd->spec_version >= SD_PHY_SPECv3_01_VERS) { |
| sd->scr[2] |= 1 << 7; /* Spec Version 3.0X */ |
| } |
| sd->scr[3] = 0x00; |
| /* reserved for manufacturer usage */ |
| 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) |
| { |
| int hwblock_shift = HWBLOCK_SHIFT; |
| uint32_t csize; |
| uint32_t sectsize = (1 << (SECTOR_SHIFT + 1)) - 1; |
| uint32_t wpsize = (1 << (WPGROUP_SHIFT + 1)) - 1; |
| |
| /* To indicate 2 GiB card, BLOCK_LEN shall be 1024 bytes */ |
| if (size == SDSC_MAX_CAPACITY) { |
| hwblock_shift += 1; |
| } |
| csize = (size >> (CMULT_SHIFT + hwblock_shift)) - 1; |
| |
| if (size <= SDSC_MAX_CAPACITY) { /* 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] = 0x32; /* Max. data transfer rate: 25 MHz */ |
| 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 */ |
| } else { /* SDHC */ |
| size /= 512 * KiB; |
| 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] = (sd_crc7(sd->csd, 15) << 1) | 1; |
| } |
| |
| static void sd_set_rca(SDState *sd) |
| { |
| sd->rca += 0x4567; |
| } |
| |
| FIELD(CSR, AKE_SEQ_ERROR, 3, 1) |
| FIELD(CSR, APP_CMD, 5, 1) |
| FIELD(CSR, FX_EVENT, 6, 1) |
| FIELD(CSR, READY_FOR_DATA, 8, 1) |
| FIELD(CSR, CURRENT_STATE, 9, 4) |
| FIELD(CSR, ERASE_RESET, 13, 1) |
| FIELD(CSR, CARD_ECC_DISABLED, 14, 1) |
| FIELD(CSR, WP_ERASE_SKIP, 15, 1) |
| FIELD(CSR, CSD_OVERWRITE, 16, 1) |
| FIELD(CSR, DEFERRED_RESPONSE, 17, 1) |
| FIELD(CSR, ERROR, 19, 1) |
| FIELD(CSR, CC_ERROR, 20, 1) |
| FIELD(CSR, CARD_ECC_FAILED, 21, 1) |
| FIELD(CSR, ILLEGAL_COMMAND, 22, 1) |
| FIELD(CSR, COM_CRC_ERROR, 23, 1) |
| FIELD(CSR, LOCK_UNLOCK_FAILED, 24, 1) |
| FIELD(CSR, CARD_IS_LOCKED, 25, 1) |
| FIELD(CSR, WP_VIOLATION, 26, 1) |
| FIELD(CSR, ERASE_PARAM, 27, 1) |
| FIELD(CSR, ERASE_SEQ_ERROR, 28, 1) |
| FIELD(CSR, BLOCK_LEN_ERROR, 29, 1) |
| FIELD(CSR, ADDRESS_ERROR, 30, 1) |
| FIELD(CSR, OUT_OF_RANGE, 31, 1) |
| |
| /* 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 (R_CSR_READY_FOR_DATA_MASK \ |
| | R_CSR_CARD_ECC_DISABLED_MASK \ |
| | R_CSR_CARD_IS_LOCKED_MASK) |
| #define CARD_STATUS_B (R_CSR_CURRENT_STATE_MASK \ |
| | R_CSR_ILLEGAL_COMMAND_MASK \ |
| | R_CSR_COM_CRC_ERROR_MASK) |
| #define CARD_STATUS_C (R_CSR_AKE_SEQ_ERROR_MASK \ |
| | R_CSR_APP_CMD_MASK \ |
| | R_CSR_ERASE_RESET_MASK \ |
| | R_CSR_WP_ERASE_SKIP_MASK \ |
| | R_CSR_CSD_OVERWRITE_MASK \ |
| | R_CSR_ERROR_MASK \ |
| | R_CSR_CC_ERROR_MASK \ |
| | R_CSR_CARD_ECC_FAILED_MASK \ |
| | R_CSR_LOCK_UNLOCK_FAILED_MASK \ |
| | R_CSR_WP_VIOLATION_MASK \ |
| | R_CSR_ERASE_PARAM_MASK \ |
| | R_CSR_ERASE_SEQ_ERROR_MASK \ |
| | R_CSR_BLOCK_LEN_ERROR_MASK \ |
| | R_CSR_ADDRESS_ERROR_MASK \ |
| | R_CSR_OUT_OF_RANGE_MASK) |
| |
| 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; |
| stl_be_p(&buffer[1], req->arg); |
| return 0; |
| return sd_crc7(buffer, 5) != req->crc; /* TODO */ |
| } |
| |
| static void sd_response_r1_make(SDState *sd, uint8_t *response) |
| { |
| stl_be_p(response, sd->card_status); |
| |
| /* Clear the "clear on read" status bits */ |
| sd->card_status &= ~CARD_STATUS_C; |
| } |
| |
| static void sd_response_r3_make(SDState *sd, uint8_t *response) |
| { |
| stl_be_p(response, sd->ocr & ACMD41_R3_MASK); |
| } |
| |
| static void sd_response_r6_make(SDState *sd, uint8_t *response) |
| { |
| uint16_t status; |
| |
| status = ((sd->card_status >> 8) & 0xc000) | |
| ((sd->card_status >> 6) & 0x2000) | |
| (sd->card_status & 0x1fff); |
| sd->card_status &= ~(CARD_STATUS_C & 0xc81fff); |
| stw_be_p(response + 0, sd->rca); |
| stw_be_p(response + 2, status); |
| } |
| |
| static void sd_response_r7_make(SDState *sd, uint8_t *response) |
| { |
| stl_be_p(response, sd->vhs); |
| } |
| |
| static inline uint64_t sd_addr_to_wpnum(uint64_t addr) |
| { |
| return addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
| } |
| |
| static void sd_reset(DeviceState *dev) |
| { |
| SDState *sd = SD_CARD(dev); |
| uint64_t size; |
| uint64_t sect; |
| |
| trace_sdcard_reset(); |
| if (sd->blk) { |
| blk_get_geometry(sd->blk, §); |
| } else { |
| sect = 0; |
| } |
| size = sect << HWBLOCK_SHIFT; |
| |
| sect = sd_addr_to_wpnum(size) + 1; |
| |
| sd->state = sd_idle_state; |
| sd->rca = 0x0000; |
| sd->size = size; |
| 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); |
| |
| g_free(sd->wp_group_bmap); |
| sd->wp_switch = sd->blk ? !blk_is_writable(sd->blk) : false; |
| sd->wp_group_bits = sect; |
| sd->wp_group_bmap = bitmap_new(sd->wp_group_bits); |
| memset(sd->function_group, 0, sizeof(sd->function_group)); |
| sd->erase_start = INVALID_ADDRESS; |
| sd->erase_end = INVALID_ADDRESS; |
| sd->blk_len = 0x200; |
| sd->pwd_len = 0; |
| sd->expecting_acmd = false; |
| sd->dat_lines = 0xf; |
| sd->cmd_line = true; |
| sd->multi_blk_cnt = 0; |
| } |
| |
| static bool sd_get_inserted(SDState *sd) |
| { |
| return sd->blk && blk_is_inserted(sd->blk); |
| } |
| |
| static bool sd_get_readonly(SDState *sd) |
| { |
| return sd->wp_switch; |
| } |
| |
| static void sd_cardchange(void *opaque, bool load, Error **errp) |
| { |
| SDState *sd = opaque; |
| DeviceState *dev = DEVICE(sd); |
| SDBus *sdbus; |
| bool inserted = sd_get_inserted(sd); |
| bool readonly = sd_get_readonly(sd); |
| |
| if (inserted) { |
| trace_sdcard_inserted(readonly); |
| sd_reset(dev); |
| } else { |
| trace_sdcard_ejected(); |
| } |
| |
| if (sd->me_no_qdev_me_kill_mammoth_with_rocks) { |
| qemu_set_irq(sd->inserted_cb, inserted); |
| if (inserted) { |
| qemu_set_irq(sd->readonly_cb, readonly); |
| } |
| } else { |
| sdbus = SD_BUS(qdev_get_parent_bus(dev)); |
| sdbus_set_inserted(sdbus, inserted); |
| if (inserted) { |
| sdbus_set_readonly(sdbus, readonly); |
| } |
| } |
| } |
| |
| static const BlockDevOps sd_block_ops = { |
| .change_media_cb = sd_cardchange, |
| }; |
| |
| static bool sd_ocr_vmstate_needed(void *opaque) |
| { |
| SDState *sd = opaque; |
| |
| /* Include the OCR state (and timer) if it is not yet powered up */ |
| return !FIELD_EX32(sd->ocr, OCR, CARD_POWER_UP); |
| } |
| |
| static const VMStateDescription sd_ocr_vmstate = { |
| .name = "sd-card/ocr-state", |
| .version_id = 1, |
| .minimum_version_id = 1, |
| .needed = sd_ocr_vmstate_needed, |
| .fields = (const VMStateField[]) { |
| VMSTATE_UINT32(ocr, SDState), |
| VMSTATE_TIMER_PTR(ocr_power_timer, SDState), |
| VMSTATE_END_OF_LIST() |
| }, |
| }; |
| |
| static int sd_vmstate_pre_load(void *opaque) |
| { |
| SDState *sd = opaque; |
| |
| /* If the OCR state is not included (prior versions, or not |
| * needed), then the OCR must be set as powered up. If the OCR state |
| * is included, this will be replaced by the state restore. |
| */ |
| sd_ocr_powerup(sd); |
| |
| return 0; |
| } |
| |
| static const VMStateDescription sd_vmstate = { |
| .name = "sd-card", |
| .version_id = 2, |
| .minimum_version_id = 2, |
| .pre_load = sd_vmstate_pre_load, |
| .fields = (const 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_group_bmap, SDState, 0, wp_group_bits), |
| VMSTATE_UINT32(blk_len, SDState), |
| VMSTATE_UINT32(multi_blk_cnt, 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_UNUSED_V(1, 512), |
| VMSTATE_BOOL(enable, SDState), |
| VMSTATE_END_OF_LIST() |
| }, |
| .subsections = (const VMStateDescription * const []) { |
| &sd_ocr_vmstate, |
| NULL |
| }, |
| }; |
| |
| /* Legacy initialization function for use by non-qdevified callers */ |
| SDState *sd_init(BlockBackend *blk, bool is_spi) |
| { |
| Object *obj; |
| DeviceState *dev; |
| SDState *sd; |
| Error *err = NULL; |
| |
| obj = object_new(is_spi ? TYPE_SD_CARD_SPI : TYPE_SD_CARD); |
| dev = DEVICE(obj); |
| if (!qdev_prop_set_drive_err(dev, "drive", blk, &err)) { |
| error_reportf_err(err, "sd_init failed: "); |
| return NULL; |
| } |
| |
| /* |
| * Realizing the device properly would put it into the QOM |
| * composition tree even though it is not plugged into an |
| * appropriate bus. That's a no-no. Hide the device from |
| * QOM/qdev, and call its qdev realize callback directly. |
| */ |
| object_ref(obj); |
| object_unparent(obj); |
| sd_realize(dev, &err); |
| if (err) { |
| error_reportf_err(err, "sd_init failed: "); |
| return NULL; |
| } |
| |
| sd = SD_CARD(dev); |
| sd->me_no_qdev_me_kill_mammoth_with_rocks = true; |
| 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->blk ? !blk_is_writable(sd->blk) : 0); |
| qemu_set_irq(insert, sd->blk ? blk_is_inserted(sd->blk) : 0); |
| } |
| |
| static void sd_blk_read(SDState *sd, uint64_t addr, uint32_t len) |
| { |
| trace_sdcard_read_block(addr, len); |
| if (!sd->blk || blk_pread(sd->blk, addr, len, sd->data, 0) < 0) { |
| fprintf(stderr, "sd_blk_read: read error on host side\n"); |
| } |
| } |
| |
| static void sd_blk_write(SDState *sd, uint64_t addr, uint32_t len) |
| { |
| trace_sdcard_write_block(addr, len); |
| if (!sd->blk || blk_pwrite(sd->blk, addr, len, sd->data, 0) < 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) |
| |
| static void sd_erase(SDState *sd) |
| { |
| uint64_t erase_start = sd->erase_start; |
| uint64_t erase_end = sd->erase_end; |
| bool sdsc = true; |
| uint64_t wpnum; |
| uint64_t erase_addr; |
| int erase_len = 1 << HWBLOCK_SHIFT; |
| |
| trace_sdcard_erase(sd->erase_start, sd->erase_end); |
| if (sd->erase_start == INVALID_ADDRESS |
| || sd->erase_end == INVALID_ADDRESS) { |
| sd->card_status |= ERASE_SEQ_ERROR; |
| sd->erase_start = INVALID_ADDRESS; |
| sd->erase_end = INVALID_ADDRESS; |
| return; |
| } |
| |
| if (FIELD_EX32(sd->ocr, OCR, CARD_CAPACITY)) { |
| /* High capacity memory card: erase units are 512 byte blocks */ |
| erase_start <<= HWBLOCK_SHIFT; |
| erase_end <<= HWBLOCK_SHIFT; |
| sdsc = false; |
| } |
| |
| if (erase_start > sd->size || erase_end > sd->size) { |
| sd->card_status |= OUT_OF_RANGE; |
| sd->erase_start = INVALID_ADDRESS; |
| sd->erase_end = INVALID_ADDRESS; |
| return; |
| } |
| |
| sd->erase_start = INVALID_ADDRESS; |
| sd->erase_end = INVALID_ADDRESS; |
| sd->csd[14] |= 0x40; |
| |
| memset(sd->data, 0xff, erase_len); |
| for (erase_addr = erase_start; erase_addr <= erase_end; |
| erase_addr += erase_len) { |
| if (sdsc) { |
| /* Only SDSC cards support write protect groups */ |
| wpnum = sd_addr_to_wpnum(erase_addr); |
| assert(wpnum < sd->wp_group_bits); |
| if (test_bit(wpnum, sd->wp_group_bmap)) { |
| sd->card_status |= WP_ERASE_SKIP; |
| continue; |
| } |
| } |
| BLK_WRITE_BLOCK(erase_addr, erase_len); |
| } |
| } |
| |
| 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) { |
| /* |
| * If the addresses of the last groups are outside the valid range, |
| * then the corresponding write protection bits shall be set to 0. |
| */ |
| continue; |
| } |
| assert(wpnum < sd->wp_group_bits); |
| if (test_bit(wpnum, sd->wp_group_bmap)) { |
| ret |= (1 << i); |
| } |
| } |
| |
| return ret; |
| } |
| |
| static void sd_function_switch(SDState *sd, uint32_t arg) |
| { |
| int i, mode, new_func; |
| 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; |
| |
| memset(&sd->data[14], 0, 3); |
| 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[16 - (i >> 1)] |= new_func << ((i % 2) * 4); |
| } |
| memset(&sd->data[17], 0, 47); |
| } |
| |
| static inline bool sd_wp_addr(SDState *sd, uint64_t addr) |
| { |
| return test_bit(sd_addr_to_wpnum(addr), sd->wp_group_bmap); |
| } |
| |
| 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 (lock) { |
| trace_sdcard_lock(); |
| } else { |
| trace_sdcard_unlock(); |
| } |
| 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_group_bmap, sd->wp_group_bits); |
| 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 bool address_in_range(SDState *sd, const char *desc, |
| uint64_t addr, uint32_t length) |
| { |
| if (addr + length > sd->size) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s offset %"PRIu64" > card %"PRIu64" [%%%u]\n", |
| desc, addr, sd->size, length); |
| sd->card_status |= ADDRESS_ERROR; |
| return false; |
| } |
| return true; |
| } |
| |
| static sd_rsp_type_t sd_invalid_state_for_cmd(SDState *sd, SDRequest req) |
| { |
| qemu_log_mask(LOG_GUEST_ERROR, "%s: CMD%i in a wrong state: %s (spec %s)\n", |
| sd_proto(sd)->name, req.cmd, sd_state_name(sd->state), |
| sd_version_str(sd->spec_version)); |
| |
| return sd_illegal; |
| } |
| |
| static sd_rsp_type_t sd_cmd_illegal(SDState *sd, SDRequest req) |
| { |
| qemu_log_mask(LOG_GUEST_ERROR, "%s: Unknown CMD%i for spec %s\n", |
| sd_proto(sd)->name, req.cmd, |
| sd_version_str(sd->spec_version)); |
| |
| return sd_illegal; |
| } |
| |
| /* Commands that are recognised but not yet implemented. */ |
| static sd_rsp_type_t sd_cmd_unimplemented(SDState *sd, SDRequest req) |
| { |
| qemu_log_mask(LOG_UNIMP, "%s: CMD%i not implemented\n", |
| sd_proto(sd)->name, req.cmd); |
| |
| return sd_illegal; |
| } |
| |
| static sd_rsp_type_t sd_cmd_GO_IDLE_STATE(SDState *sd, SDRequest req) |
| { |
| if (sd->state != sd_inactive_state) { |
| sd->state = sd_idle_state; |
| sd_reset(DEVICE(sd)); |
| } |
| |
| return sd_is_spi(sd) ? sd_r1 : sd_r0; |
| } |
| |
| static sd_rsp_type_t spi_cmd_SEND_OP_COND(SDState *sd, SDRequest req) |
| { |
| sd->state = sd_transfer_state; |
| |
| return sd_r1; |
| } |
| |
| static sd_rsp_type_t sd_cmd_ALL_SEND_CID(SDState *sd, SDRequest req) |
| { |
| switch (sd->state) { |
| case sd_ready_state: |
| sd->state = sd_identification_state; |
| return sd_r2_i; |
| default: |
| return sd_invalid_state_for_cmd(sd, req); |
| } |
| } |
| |
| static sd_rsp_type_t sd_cmd_SEND_RELATIVE_ADDR(SDState *sd, SDRequest req) |
| { |
| switch (sd->state) { |
| case sd_identification_state: |
| case sd_standby_state: |
| sd->state = sd_standby_state; |
| sd_set_rca(sd); |
| return sd_r6; |
| |
| default: |
| return sd_invalid_state_for_cmd(sd, req); |
| } |
| } |
| |
| static sd_rsp_type_t sd_cmd_SEND_TUNING_BLOCK(SDState *sd, SDRequest req) |
| { |
| if (sd->spec_version < SD_PHY_SPECv3_01_VERS) { |
| return sd_cmd_illegal(sd, req); |
| } |
| |
| if (sd->state != sd_transfer_state) { |
| return sd_invalid_state_for_cmd(sd, req); |
| } |
| |
| sd->state = sd_sendingdata_state; |
| sd->data_offset = 0; |
| |
| return sd_r1; |
| } |
| |
| static sd_rsp_type_t sd_cmd_SET_BLOCK_COUNT(SDState *sd, SDRequest req) |
| { |
| if (sd->spec_version < SD_PHY_SPECv3_01_VERS) { |
| return sd_cmd_illegal(sd, req); |
| } |
| |
| if (sd->state != sd_transfer_state) { |
| return sd_invalid_state_for_cmd(sd, req); |
| } |
| |
| sd->multi_blk_cnt = req.arg; |
| |
| return sd_r1; |
| } |
| |
| 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; |
| |
| /* CMD55 precedes an ACMD, so we are not interested in tracing it. |
| * However there is no ACMD55, so we want to trace this particular case. |
| */ |
| if (req.cmd != 55 || sd->expecting_acmd) { |
| trace_sdcard_normal_command(sd_proto(sd)->name, |
| sd_cmd_name(req.cmd), req.cmd, |
| req.arg, sd_state_name(sd->state)); |
| } |
| |
| /* 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; |
| } |
| |
| /* CMD23 (set block count) must be immediately followed by CMD18 or CMD25 |
| * if not, its effects are cancelled */ |
| if (sd->multi_blk_cnt != 0 && !(req.cmd == 18 || req.cmd == 25)) { |
| sd->multi_blk_cnt = 0; |
| } |
| |
| if (sd_cmd_class[req.cmd] == 6 && FIELD_EX32(sd->ocr, OCR, CARD_CAPACITY)) { |
| /* Only Standard Capacity cards support class 6 commands */ |
| return sd_illegal; |
| } |
| |
| if (sd_proto(sd)->cmd[req.cmd]) { |
| return sd_proto(sd)->cmd[req.cmd](sd, req); |
| } |
| |
| switch (req.cmd) { |
| /* Basic commands (Class 0 and Class 1) */ |
| case 4: /* CMD4: SEND_DSR */ |
| switch (sd->state) { |
| case sd_standby_state: |
| break; |
| |
| default: |
| break; |
| } |
| break; |
| |
| case 6: /* CMD6: SWITCH_FUNCTION */ |
| 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 */ |
| 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 */ |
| if (sd->spec_version < SD_PHY_SPECv2_00_VERS) { |
| break; |
| } |
| if (sd->state != sd_idle_state) { |
| break; |
| } |
| sd->vhs = 0; |
| |
| /* No response if not exactly one VHS bit is set. */ |
| if (!(req.arg >> 8) || (req.arg >> (ctz32(req.arg & ~0xff) + 1))) { |
| return sd_is_spi(sd) ? sd_r7 : sd_r0; |
| } |
| |
| /* Accept. */ |
| sd->vhs = req.arg; |
| return sd_r7; |
| |
| 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_is_spi(sd)) { |
| 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_is_spi(sd)) { |
| 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 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_is_spi(sd) && sd->rca != rca) { |
| return sd_r0; |
| } |
| |
| return sd_r1; |
| |
| default: |
| break; |
| } |
| break; |
| |
| case 15: /* CMD15: GO_INACTIVE_STATE */ |
| 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 (Class 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 { |
| trace_sdcard_set_blocklen(req.arg); |
| sd->blk_len = req.arg; |
| } |
| |
| return sd_r1; |
| |
| default: |
| break; |
| } |
| break; |
| |
| case 17: /* CMD17: READ_SINGLE_BLOCK */ |
| case 18: /* CMD18: READ_MULTIPLE_BLOCK */ |
| switch (sd->state) { |
| case sd_transfer_state: |
| |
| if (!address_in_range(sd, "READ_BLOCK", addr, sd->blk_len)) { |
| return sd_r1; |
| } |
| |
| sd->state = sd_sendingdata_state; |
| sd->data_start = addr; |
| sd->data_offset = 0; |
| return sd_r1; |
| |
| default: |
| break; |
| } |
| break; |
| |
| /* Block write commands (Class 4) */ |
| case 24: /* CMD24: WRITE_SINGLE_BLOCK */ |
| case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ |
| switch (sd->state) { |
| case sd_transfer_state: |
| |
| if (!address_in_range(sd, "WRITE_BLOCK", addr, sd->blk_len)) { |
| return sd_r1; |
| } |
| |
| sd->state = sd_receivingdata_state; |
| sd->data_start = addr; |
| sd->data_offset = 0; |
| sd->blk_written = 0; |
| |
| if (sd->size <= SDSC_MAX_CAPACITY) { |
| 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 */ |
| 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 */ |
| 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 */ |
| if (sd->size > SDSC_MAX_CAPACITY) { |
| return sd_illegal; |
| } |
| |
| switch (sd->state) { |
| case sd_transfer_state: |
| if (!address_in_range(sd, "SET_WRITE_PROT", addr, 1)) { |
| return sd_r1b; |
| } |
| |
| sd->state = sd_programming_state; |
| set_bit(sd_addr_to_wpnum(addr), sd->wp_group_bmap); |
| /* Bzzzzzzztt .... Operation complete. */ |
| sd->state = sd_transfer_state; |
| return sd_r1b; |
| |
| default: |
| break; |
| } |
| break; |
| |
| case 29: /* CMD29: CLR_WRITE_PROT */ |
| if (sd->size > SDSC_MAX_CAPACITY) { |
| return sd_illegal; |
| } |
| |
| switch (sd->state) { |
| case sd_transfer_state: |
| if (!address_in_range(sd, "CLR_WRITE_PROT", addr, 1)) { |
| return sd_r1b; |
| } |
| |
| sd->state = sd_programming_state; |
| clear_bit(sd_addr_to_wpnum(addr), sd->wp_group_bmap); |
| /* Bzzzzzzztt .... Operation complete. */ |
| sd->state = sd_transfer_state; |
| return sd_r1b; |
| |
| default: |
| break; |
| } |
| break; |
| |
| case 30: /* CMD30: SEND_WRITE_PROT */ |
| if (sd->size > SDSC_MAX_CAPACITY) { |
| return sd_illegal; |
| } |
| |
| switch (sd->state) { |
| case sd_transfer_state: |
| if (!address_in_range(sd, "SEND_WRITE_PROT", |
| req.arg, sd->blk_len)) { |
| return sd_r1; |
| } |
| |
| sd->state = sd_sendingdata_state; |
| *(uint32_t *) sd->data = sd_wpbits(sd, req.arg); |
| sd->data_start = addr; |
| sd->data_offset = 0; |
| return sd_r1; |
| |
| 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 */ |
| 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; |
| |
| /* Application specific commands (Class 8) */ |
| case 55: /* CMD55: APP_CMD */ |
| switch (sd->state) { |
| case sd_ready_state: |
| case sd_identification_state: |
| case sd_inactive_state: |
| return sd_illegal; |
| case sd_idle_state: |
| if (rca) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "SD: illegal RCA 0x%04x for APP_CMD\n", req.cmd); |
| } |
| default: |
| break; |
| } |
| if (!sd_is_spi(sd)) { |
| if (sd->rca != rca) { |
| return sd_r0; |
| } |
| } |
| sd->expecting_acmd = true; |
| sd->card_status |= APP_CMD; |
| return sd_r1; |
| |
| case 56: /* CMD56: GEN_CMD */ |
| 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; |
| |
| case 58: /* CMD58: READ_OCR (SPI) */ |
| return sd_r3; |
| |
| case 59: /* CMD59: CRC_ON_OFF (SPI) */ |
| return sd_r1; |
| |
| default: |
| qemu_log_mask(LOG_GUEST_ERROR, "SD: Unknown CMD%i\n", req.cmd); |
| return sd_illegal; |
| } |
| |
| return sd_invalid_state_for_cmd(sd, req); |
| } |
| |
| static sd_rsp_type_t sd_app_command(SDState *sd, |
| SDRequest req) |
| { |
| trace_sdcard_app_command(sd_proto(sd)->name, sd_acmd_name(req.cmd), |
| req.cmd, req.arg, sd_state_name(sd->state)); |
| sd->card_status |= APP_CMD; |
| |
| if (sd_proto(sd)->acmd[req.cmd]) { |
| return sd_proto(sd)->acmd[req.cmd](sd, req); |
| } |
| |
| 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->state != sd_idle_state) { |
| break; |
| } |
| /* If it's the first ACMD41 since reset, we need to decide |
| * whether to power up. If this is not an enquiry ACMD41, |
| * we immediately report power on and proceed below to the |
| * ready state, but if it is, we set a timer to model a |
| * delay for power up. This works around a bug in EDK2 |
| * UEFI, which sends an initial enquiry ACMD41, but |
| * assumes that the card is in ready state as soon as it |
| * sees the power up bit set. */ |
| if (!FIELD_EX32(sd->ocr, OCR, CARD_POWER_UP)) { |
| if ((req.arg & ACMD41_ENQUIRY_MASK) != 0) { |
| timer_del(sd->ocr_power_timer); |
| sd_ocr_powerup(sd); |
| } else { |
| trace_sdcard_inquiry_cmd41(); |
| if (!timer_pending(sd->ocr_power_timer)) { |
| timer_mod_ns(sd->ocr_power_timer, |
| (qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) |
| + OCR_POWER_DELAY_NS)); |
| } |
| } |
| } |
| |
| if (FIELD_EX32(sd->ocr & req.arg, OCR, VDD_VOLTAGE_WINDOW)) { |
| /* We accept any voltage. 10000 V is nothing. |
| * |
| * Once we're powered up, we advance straight to ready state |
| * unless it's an enquiry ACMD41 (bits 23:0 == 0). |
| */ |
| sd->state = sd_ready_state; |
| } |
| |
| return sd_r3; |
| |
| 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; |
| |
| case 18: /* Reserved for SD security applications */ |
| case 25: |
| case 26: |
| case 38: |
| case 43 ... 49: |
| /* Refer to the "SD Specifications Part3 Security Specification" for |
| * information about the SD Security Features. |
| */ |
| qemu_log_mask(LOG_UNIMP, "SD: CMD%i Security not implemented\n", |
| req.cmd); |
| return sd_illegal; |
| |
| default: |
| /* Fall back to standard commands. */ |
| return sd_normal_command(sd, req); |
| } |
| |
| qemu_log_mask(LOG_GUEST_ERROR, "SD: ACMD%i in a wrong state\n", req.cmd); |
| return sd_illegal; |
| } |
| |
| static int cmd_valid_while_locked(SDState *sd, const uint8_t cmd) |
| { |
| /* 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 cmd == 41 || cmd == 42; |
| } |
| if (cmd == 16 || cmd == 55) { |
| return 1; |
| } |
| return sd_cmd_class[cmd] == 0 || sd_cmd_class[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->blk || !blk_is_inserted(sd->blk) || !sd->enable) { |
| return 0; |
| } |
| |
| if (sd_req_crc_validate(req)) { |
| sd->card_status |= COM_CRC_ERROR; |
| rtype = sd_illegal; |
| goto send_response; |
| } |
| |
| if (req->cmd >= SDMMC_CMD_MAX) { |
| qemu_log_mask(LOG_GUEST_ERROR, "SD: incorrect command 0x%02x\n", |
| req->cmd); |
| req->cmd &= 0x3f; |
| } |
| |
| if (sd->card_status & CARD_IS_LOCKED) { |
| if (!cmd_valid_while_locked(sd, req->cmd)) { |
| sd->card_status |= ILLEGAL_COMMAND; |
| sd->expecting_acmd = false; |
| qemu_log_mask(LOG_GUEST_ERROR, "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: |
| /* |
| * Invalid state transition, reset implementation |
| * fields to avoid OOB abuse. |
| */ |
| sd->data_start = 0; |
| sd->data_offset = 0; |
| /* fall-through */ |
| case sd_illegal: |
| rsplen = 0; |
| break; |
| default: |
| g_assert_not_reached(); |
| } |
| trace_sdcard_response(sd_response_name(rtype), rsplen); |
| |
| 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 |
| qemu_hexdump(stderr, "Response", response, rsplen); |
| #endif |
| |
| return rsplen; |
| } |
| |
| void sd_write_byte(SDState *sd, uint8_t value) |
| { |
| int i; |
| |
| if (!sd->blk || !blk_is_inserted(sd->blk) || !sd->enable) |
| return; |
| |
| if (sd->state != sd_receivingdata_state) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: not in Receiving-Data state\n", __func__); |
| return; |
| } |
| |
| if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION)) |
| return; |
| |
| trace_sdcard_write_data(sd_proto(sd)->name, |
| sd_acmd_name(sd->current_cmd), |
| sd->current_cmd, value); |
| 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 - let's check the address is valid */ |
| if (!address_in_range(sd, "WRITE_MULTIPLE_BLOCK", |
| sd->data_start, sd->blk_len)) { |
| break; |
| } |
| if (sd->size <= SDSC_MAX_CAPACITY) { |
| 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. */ |
| if (sd->multi_blk_cnt != 0) { |
| if (--sd->multi_blk_cnt == 0) { |
| /* Stop! */ |
| sd->state = sd_transfer_state; |
| break; |
| } |
| } |
| |
| 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: |
| qemu_log_mask(LOG_GUEST_ERROR, "%s: unknown command\n", __func__); |
| break; |
| } |
| } |
| |
| #define SD_TUNING_BLOCK_SIZE 64 |
| |
| static const uint8_t sd_tuning_block_pattern[SD_TUNING_BLOCK_SIZE] = { |
| /* See: Physical Layer Simplified Specification Version 3.01, Table 4-2 */ |
| 0xff, 0x0f, 0xff, 0x00, 0x0f, 0xfc, 0xc3, 0xcc, |
| 0xc3, 0x3c, 0xcc, 0xff, 0xfe, 0xff, 0xfe, 0xef, |
| 0xff, 0xdf, 0xff, 0xdd, 0xff, 0xfb, 0xff, 0xfb, |
| 0xbf, 0xff, 0x7f, 0xff, 0x77, 0xf7, 0xbd, 0xef, |
| 0xff, 0xf0, 0xff, 0xf0, 0x0f, 0xfc, 0xcc, 0x3c, |
| 0xcc, 0x33, 0xcc, 0xcf, 0xff, 0xef, 0xff, 0xee, |
| 0xff, 0xfd, 0xff, 0xfd, 0xdf, 0xff, 0xbf, 0xff, |
| 0xbb, 0xff, 0xf7, 0xff, 0xf7, 0x7f, 0x7b, 0xde, |
| }; |
| |
| uint8_t sd_read_byte(SDState *sd) |
| { |
| /* TODO: Append CRCs */ |
| uint8_t ret; |
| uint32_t io_len; |
| |
| if (!sd->blk || !blk_is_inserted(sd->blk) || !sd->enable) |
| return 0x00; |
| |
| if (sd->state != sd_sendingdata_state) { |
| qemu_log_mask(LOG_GUEST_ERROR, |
| "%s: not in Sending-Data state\n", __func__); |
| return 0x00; |
| } |
| |
| if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION)) |
| return 0x00; |
| |
| io_len = (sd->ocr & (1 << 30)) ? 512 : sd->blk_len; |
| |
| trace_sdcard_read_data(sd_proto(sd)->name, |
| sd_acmd_name(sd->current_cmd), |
| sd->current_cmd, io_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 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) { |
| if (!address_in_range(sd, "READ_MULTIPLE_BLOCK", |
| sd->data_start, io_len)) { |
| return 0x00; |
| } |
| 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->multi_blk_cnt != 0) { |
| if (--sd->multi_blk_cnt == 0) { |
| /* Stop! */ |
| sd->state = sd_transfer_state; |
| break; |
| } |
| } |
| } |
| break; |
| |
| case 19: /* CMD19: SEND_TUNING_BLOCK (SD) */ |
| if (sd->data_offset >= SD_TUNING_BLOCK_SIZE - 1) { |
| sd->state = sd_transfer_state; |
| } |
| ret = sd_tuning_block_pattern[sd->data_offset++]; |
| 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: |
| qemu_log_mask(LOG_GUEST_ERROR, "%s: unknown command\n", __func__); |
| return 0x00; |
| } |
| |
| return ret; |
| } |
| |
| static bool sd_receive_ready(SDState *sd) |
| { |
| return sd->state == sd_receivingdata_state; |
| } |
| |
| static bool sd_data_ready(SDState *sd) |
| { |
| return sd->state == sd_sendingdata_state; |
| } |
| |
| void sd_enable(SDState *sd, bool enable) |
| { |
| sd->enable = enable; |
| } |
| |
| static const SDProto sd_proto_spi = { |
| .name = "SPI", |
| .cmd = { |
| [0] = sd_cmd_GO_IDLE_STATE, |
| [1] = spi_cmd_SEND_OP_COND, |
| [2 ... 4] = sd_cmd_illegal, |
| [5] = sd_cmd_illegal, |
| [7] = sd_cmd_illegal, |
| [15] = sd_cmd_illegal, |
| [26] = sd_cmd_illegal, |
| [52 ... 54] = sd_cmd_illegal, |
| }, |
| .acmd = { |
| [6] = sd_cmd_unimplemented, |
| [41] = spi_cmd_SEND_OP_COND, |
| }, |
| }; |
| |
| static const SDProto sd_proto_sd = { |
| .name = "SD", |
| .cmd = { |
| [0] = sd_cmd_GO_IDLE_STATE, |
| [1] = sd_cmd_illegal, |
| [2] = sd_cmd_ALL_SEND_CID, |
| [3] = sd_cmd_SEND_RELATIVE_ADDR, |
| [5] = sd_cmd_illegal, |
| [19] = sd_cmd_SEND_TUNING_BLOCK, |
| [23] = sd_cmd_SET_BLOCK_COUNT, |
| [52 ... 54] = sd_cmd_illegal, |
| [58] = sd_cmd_illegal, |
| [59] = sd_cmd_illegal, |
| }, |
| }; |
| |
| static void sd_instance_init(Object *obj) |
| { |
| SDState *sd = SD_CARD(obj); |
| |
| sd->enable = true; |
| sd->ocr_power_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, sd_ocr_powerup, sd); |
| } |
| |
| static void sd_instance_finalize(Object *obj) |
| { |
| SDState *sd = SD_CARD(obj); |
| |
| timer_free(sd->ocr_power_timer); |
| } |
| |
| static void sd_realize(DeviceState *dev, Error **errp) |
| { |
| SDState *sd = SD_CARD(dev); |
| int ret; |
| |
| switch (sd->spec_version) { |
| case SD_PHY_SPECv1_10_VERS |
| ... SD_PHY_SPECv3_01_VERS: |
| break; |
| default: |
| error_setg(errp, "Invalid SD card Spec version: %u", sd->spec_version); |
| return; |
| } |
| |
| if (sd->blk) { |
| int64_t blk_size; |
| |
| if (!blk_supports_write_perm(sd->blk)) { |
| error_setg(errp, "Cannot use read-only drive as SD card"); |
| return; |
| } |
| |
| blk_size = blk_getlength(sd->blk); |
| if (blk_size > 0 && !is_power_of_2(blk_size)) { |
| int64_t blk_size_aligned = pow2ceil(blk_size); |
| char *blk_size_str; |
| |
| blk_size_str = size_to_str(blk_size); |
| error_setg(errp, "Invalid SD card size: %s", blk_size_str); |
| g_free(blk_size_str); |
| |
| blk_size_str = size_to_str(blk_size_aligned); |
| error_append_hint(errp, |
| "SD card size has to be a power of 2, e.g. %s.\n" |
| "You can resize disk images with" |
| " 'qemu-img resize <imagefile> <new-size>'\n" |
| "(note that this will lose data if you make the" |
| " image smaller than it currently is).\n", |
| blk_size_str); |
| g_free(blk_size_str); |
| |
| return; |
| } |
| |
| ret = blk_set_perm(sd->blk, BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE, |
| BLK_PERM_ALL, errp); |
| if (ret < 0) { |
| return; |
| } |
| blk_set_dev_ops(sd->blk, &sd_block_ops, sd); |
| } |
| } |
| |
| static Property sd_properties[] = { |
| DEFINE_PROP_UINT8("spec_version", SDState, |
| spec_version, SD_PHY_SPECv2_00_VERS), |
| DEFINE_PROP_DRIVE("drive", SDState, blk), |
| /* 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. */ |
| DEFINE_PROP_END_OF_LIST() |
| }; |
| |
| static void sd_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| SDCardClass *sc = SD_CARD_CLASS(klass); |
| |
| dc->realize = sd_realize; |
| device_class_set_props(dc, sd_properties); |
| dc->vmsd = &sd_vmstate; |
| dc->reset = sd_reset; |
| dc->bus_type = TYPE_SD_BUS; |
| set_bit(DEVICE_CATEGORY_STORAGE, dc->categories); |
| |
| sc->set_voltage = sd_set_voltage; |
| sc->get_dat_lines = sd_get_dat_lines; |
| sc->get_cmd_line = sd_get_cmd_line; |
| sc->do_command = sd_do_command; |
| sc->write_byte = sd_write_byte; |
| sc->read_byte = sd_read_byte; |
| sc->receive_ready = sd_receive_ready; |
| sc->data_ready = sd_data_ready; |
| sc->enable = sd_enable; |
| sc->get_inserted = sd_get_inserted; |
| sc->get_readonly = sd_get_readonly; |
| sc->proto = &sd_proto_sd; |
| } |
| |
| /* |
| * 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. |
| */ |
| static void sd_spi_class_init(ObjectClass *klass, void *data) |
| { |
| DeviceClass *dc = DEVICE_CLASS(klass); |
| SDCardClass *sc = SD_CARD_CLASS(klass); |
| |
| dc->desc = "SD SPI"; |
| sc->proto = &sd_proto_spi; |
| } |
| |
| static const TypeInfo sd_types[] = { |
| { |
| .name = TYPE_SD_CARD, |
| .parent = TYPE_DEVICE, |
| .instance_size = sizeof(SDState), |
| .class_size = sizeof(SDCardClass), |
| .class_init = sd_class_init, |
| .instance_init = sd_instance_init, |
| .instance_finalize = sd_instance_finalize, |
| }, |
| { |
| .name = TYPE_SD_CARD_SPI, |
| .parent = TYPE_SD_CARD, |
| .class_init = sd_spi_class_init, |
| }, |
| }; |
| |
| DEFINE_TYPES(sd_types) |