mirror of
https://github.com/espressif/esp-idf.git
synced 2024-10-05 20:47:46 -04:00
183 lines
7.5 KiB
C
183 lines
7.5 KiB
C
/*
|
|
* SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#include <string.h>
|
|
#include "esp_err.h"
|
|
#include "esp_log.h"
|
|
#include "sys/lock.h"
|
|
#include "driver/sdmmc_types.h"
|
|
#include "driver/sdmmc_defs.h"
|
|
#include "driver/sdmmc_types.h"
|
|
#include "sdspi_private.h"
|
|
#include "sdspi_crc.h"
|
|
|
|
static const char* TAG = "sdspi_transaction";
|
|
|
|
static _lock_t s_lock;
|
|
static bool s_app_cmd;
|
|
|
|
static uint8_t sdspi_msg_crc7(sdspi_hw_cmd_t* hw_cmd)
|
|
{
|
|
const size_t bytes_to_crc = offsetof(sdspi_hw_cmd_t, arguments) +
|
|
sizeof(hw_cmd->arguments); /* can't take address of bit fields */
|
|
return sdspi_crc7((const uint8_t *)hw_cmd, bytes_to_crc);
|
|
}
|
|
|
|
void make_hw_cmd(uint32_t opcode, uint32_t arg, int timeout_ms, sdspi_hw_cmd_t *hw_cmd)
|
|
{
|
|
hw_cmd->start_bit = 0;
|
|
hw_cmd->transmission_bit = 1;
|
|
hw_cmd->cmd_index = opcode;
|
|
hw_cmd->stop_bit = 1;
|
|
hw_cmd->r1 = 0xff;
|
|
memset(hw_cmd->response, 0xff, sizeof(hw_cmd->response));
|
|
hw_cmd->ncr = 0xff;
|
|
uint32_t arg_s = __builtin_bswap32(arg);
|
|
memcpy(hw_cmd->arguments, &arg_s, sizeof(arg_s));
|
|
hw_cmd->crc7 = sdspi_msg_crc7(hw_cmd);
|
|
hw_cmd->timeout_ms = timeout_ms;
|
|
}
|
|
|
|
static void r1_response_to_err(uint8_t r1, int cmd, esp_err_t *out_err)
|
|
{
|
|
if (r1 & SD_SPI_R1_NO_RESPONSE) {
|
|
ESP_LOGD(TAG, "cmd=%d, R1 response not found", cmd);
|
|
*out_err = ESP_ERR_TIMEOUT;
|
|
} else if (r1 & SD_SPI_R1_CMD_CRC_ERR) {
|
|
ESP_LOGD(TAG, "cmd=%d, R1 response: command CRC error", cmd);
|
|
*out_err = ESP_ERR_INVALID_CRC;
|
|
} else if (r1 & SD_SPI_R1_ILLEGAL_CMD) {
|
|
ESP_LOGD(TAG, "cmd=%d, R1 response: command not supported", cmd);
|
|
*out_err = ESP_ERR_NOT_SUPPORTED;
|
|
} else if (r1 & SD_SPI_R1_ADDR_ERR) {
|
|
ESP_LOGD(TAG, "cmd=%d, R1 response: alignment error", cmd);
|
|
*out_err = ESP_ERR_INVALID_ARG;
|
|
} else if (r1 & SD_SPI_R1_PARAM_ERR) {
|
|
ESP_LOGD(TAG, "cmd=%d, R1 response: size error", cmd);
|
|
*out_err = ESP_ERR_INVALID_SIZE;
|
|
} else if ((r1 & SD_SPI_R1_ERASE_RST) ||
|
|
(r1 & SD_SPI_R1_ERASE_SEQ_ERR)) {
|
|
*out_err = ESP_ERR_INVALID_STATE;
|
|
} else if (r1 & SD_SPI_R1_IDLE_STATE) {
|
|
// Idle state is handled at command layer
|
|
} else if (r1 != 0) {
|
|
ESP_LOGD(TAG, "cmd=%d, R1 response: unexpected value 0x%02x", cmd, r1);
|
|
*out_err = ESP_ERR_INVALID_RESPONSE;
|
|
}
|
|
}
|
|
|
|
static void r1_sdio_response_to_err(uint8_t r1, int cmd, esp_err_t *out_err)
|
|
{
|
|
if (r1 & SD_SPI_R1_NO_RESPONSE) {
|
|
ESP_LOGI(TAG, "cmd=%d, R1 response not found", cmd);
|
|
*out_err = ESP_ERR_TIMEOUT;
|
|
} else if (r1 & SD_SPI_R1_CMD_CRC_ERR) {
|
|
ESP_LOGI(TAG, "cmd=%d, R1 response: command CRC error", cmd);
|
|
*out_err = ESP_ERR_INVALID_CRC;
|
|
} else if (r1 & SD_SPI_R1_ILLEGAL_CMD) {
|
|
ESP_LOGI(TAG, "cmd=%d, R1 response: command not supported", cmd);
|
|
*out_err = ESP_ERR_NOT_SUPPORTED;
|
|
} else if (r1 & SD_SPI_R1_PARAM_ERR) {
|
|
ESP_LOGI(TAG, "cmd=%d, R1 response: size error", cmd);
|
|
*out_err = ESP_ERR_INVALID_SIZE;
|
|
} else if (r1 & SDIO_R1_FUNC_NUM_ERR) {
|
|
ESP_LOGI(TAG, "cmd=%d, R1 response: function number error", cmd);
|
|
*out_err = ESP_ERR_INVALID_ARG;
|
|
} else if (r1 & SD_SPI_R1_IDLE_STATE) {
|
|
// Idle state is handled at command layer
|
|
} else if (r1 != 0) {
|
|
ESP_LOGI(TAG, "cmd=%d, R1 response: unexpected value 0x%02x", cmd, r1);
|
|
*out_err = ESP_ERR_INVALID_RESPONSE;
|
|
}
|
|
}
|
|
|
|
esp_err_t sdspi_host_do_transaction(int slot, sdmmc_command_t *cmdinfo)
|
|
{
|
|
_lock_acquire(&s_lock);
|
|
// Convert the command to wire format
|
|
WORD_ALIGNED_ATTR sdspi_hw_cmd_t hw_cmd;
|
|
make_hw_cmd(cmdinfo->opcode, cmdinfo->arg, cmdinfo->timeout_ms, &hw_cmd);
|
|
|
|
// Flags indicate which of the transfer types should be used
|
|
int flags = 0;
|
|
if (SCF_CMD(cmdinfo->flags) == SCF_CMD_ADTC) {
|
|
flags = SDSPI_CMD_FLAG_DATA | SDSPI_CMD_FLAG_WRITE;
|
|
} else if (SCF_CMD(cmdinfo->flags) == (SCF_CMD_ADTC | SCF_CMD_READ)) {
|
|
flags = SDSPI_CMD_FLAG_DATA;
|
|
}
|
|
|
|
// The block size is 512, when larger than 512, the data must send in multi blocks
|
|
if (cmdinfo->datalen > SDSPI_MAX_DATA_LEN) {
|
|
flags |= SDSPI_CMD_FLAG_MULTI_BLK;
|
|
}
|
|
|
|
// In SD host, response format is encoded using SCF_RSP_* flags which come
|
|
// as part of sdmmc_command_t from the upper layer (sdmmc_cmd.c).
|
|
// SPI mode uses different command formats. In fact, most of the commands
|
|
// use R1 response. Therefore, instead of adding another parallel set of
|
|
// response flags for the SPI mode, response format is determined here:
|
|
if (!s_app_cmd && cmdinfo->opcode == SD_SEND_IF_COND) {
|
|
flags |= SDSPI_CMD_FLAG_RSP_R7;
|
|
} else if (!s_app_cmd && cmdinfo->opcode == MMC_SEND_STATUS) {
|
|
flags |= SDSPI_CMD_FLAG_RSP_R2;
|
|
} else if (!s_app_cmd && cmdinfo->opcode == SD_READ_OCR) {
|
|
flags |= SDSPI_CMD_FLAG_RSP_R3;
|
|
} else if (s_app_cmd && cmdinfo->opcode == SD_APP_SD_STATUS) {
|
|
flags |= SDSPI_CMD_FLAG_RSP_R2;
|
|
} else if (!s_app_cmd && cmdinfo->opcode == MMC_GO_IDLE_STATE &&
|
|
!(cmdinfo->flags & SCF_RSP_R1)) {
|
|
/* used to send CMD0 without expecting a response */
|
|
flags |= SDSPI_CMD_FLAG_NORSP;
|
|
} else if (!s_app_cmd && cmdinfo->opcode == SD_IO_SEND_OP_COND) {
|
|
flags |= SDSPI_CMD_FLAG_RSP_R4;
|
|
} else if (!s_app_cmd && cmdinfo->opcode == SD_IO_RW_DIRECT) {
|
|
flags |= SDSPI_CMD_FLAG_RSP_R5;
|
|
} else if (!s_app_cmd && cmdinfo->opcode == SD_IO_RW_EXTENDED) {
|
|
flags |= SDSPI_CMD_FLAG_RSP_R5 | SDSPI_CMD_FLAG_DATA;
|
|
if (cmdinfo->arg & SD_ARG_CMD53_WRITE) flags |= SDSPI_CMD_FLAG_WRITE;
|
|
// The CMD53 can assign block mode in the arg when the length is exactly 512 bytes
|
|
if (cmdinfo->arg & SD_ARG_CMD53_BLOCK_MODE) flags |= SDSPI_CMD_FLAG_MULTI_BLK;
|
|
} else if (!s_app_cmd && (cmdinfo->opcode == MMC_ERASE || cmdinfo->opcode == MMC_STOP_TRANSMISSION)) {
|
|
flags |= SDSPI_CMD_FLAG_RSP_R1B;
|
|
} else {
|
|
flags |= SDSPI_CMD_FLAG_RSP_R1;
|
|
}
|
|
|
|
// Send the command and get the response.
|
|
esp_err_t ret = sdspi_host_start_command(slot, &hw_cmd,
|
|
cmdinfo->data, cmdinfo->datalen, flags);
|
|
|
|
// Extract response bytes and store them into cmdinfo structure
|
|
if (ret == ESP_OK) {
|
|
ESP_LOGV(TAG, "r1 = 0x%02x hw_cmd.r[0]=0x%08"PRIx32, hw_cmd.r1, hw_cmd.response[0]);
|
|
// Some errors should be reported using return code
|
|
if (flags & (SDSPI_CMD_FLAG_RSP_R1 | SDSPI_CMD_FLAG_RSP_R1B)) {
|
|
cmdinfo->response[0] = hw_cmd.r1;
|
|
r1_response_to_err(hw_cmd.r1, cmdinfo->opcode, &ret);
|
|
} else if (flags & SDSPI_CMD_FLAG_RSP_R2) {
|
|
cmdinfo->response[0] = ((uint32_t)hw_cmd.r1) | ((hw_cmd.response[0] & 0xff) << 8);
|
|
} else if (flags & (SDSPI_CMD_FLAG_RSP_R3 | SDSPI_CMD_FLAG_RSP_R7)) {
|
|
r1_response_to_err(hw_cmd.r1, cmdinfo->opcode, &ret);
|
|
cmdinfo->response[0] = __builtin_bswap32(hw_cmd.response[0]);
|
|
} else if (flags & SDSPI_CMD_FLAG_RSP_R4) {
|
|
r1_sdio_response_to_err(hw_cmd.r1, cmdinfo->opcode, &ret);
|
|
cmdinfo->response[0] = __builtin_bswap32(hw_cmd.response[0]);
|
|
} else if (flags & SDSPI_CMD_FLAG_RSP_R5) {
|
|
r1_sdio_response_to_err(hw_cmd.r1, cmdinfo->opcode, &ret);
|
|
cmdinfo->response[0] = hw_cmd.response[0];
|
|
}
|
|
}
|
|
|
|
// Save a flag whether the next command is expected to be an app command
|
|
if (ret == ESP_OK) {
|
|
s_app_cmd = (cmdinfo->opcode == MMC_APP_CMD);
|
|
} else {
|
|
s_app_cmd = false;
|
|
}
|
|
_lock_release(&s_lock);
|
|
return ret;
|
|
}
|