259 lines
6.8 KiB
C
259 lines
6.8 KiB
C
/*
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* File : mmcsd_core.h
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* This file is part of RT-Thread RTOS
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* COPYRIGHT (C) 2006, RT-Thread Development Team
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*
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* The license and distribution terms for this file may be
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* found in the file LICENSE in this distribution or at
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* http://www.rt-thread.org/license/LICENSE
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*
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* Change Logs:
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* Date Author Notes
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* 2011-07-25 weety first version
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*/
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#ifndef __CORE_H__
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#define __CORE_H__
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#include <rtthread.h>
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#include "mmcsd_host.h"
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#include "mmcsd_card.h"
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#include "mmcsd_cmd.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef RT_MMCSD_DBG
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#define mmcsd_dbg(fmt, ...) rt_kprintf(fmt, ##__VA_ARGS__)
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#else
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#define mmcsd_dbg(fmt, ...)
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#endif
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struct rt_mmcsd_data {
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rt_uint32_t blksize;
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rt_uint32_t blks;
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rt_uint32_t *buf;
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rt_int32_t err;
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rt_uint32_t flags;
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#define DATA_DIR_WRITE (1 << 0)
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#define DATA_DIR_READ (1 << 1)
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#define DATA_STREAM (1 << 2)
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rt_uint32_t timeout_ns;
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rt_uint32_t timeout_clks;
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};
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struct rt_mmcsd_cmd {
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rt_uint32_t cmd_code;
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rt_uint32_t arg;
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rt_uint32_t resp[4];
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rt_uint32_t flags;
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/*rsponse types
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*bits:0~3
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*/
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#define RESP_MASK (0xF)
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#define RESP_NONE (0)
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#define RESP_R1 (1 << 0)
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#define RESP_R1B (2 << 0)
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#define RESP_R2 (3 << 0)
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#define RESP_R3 (4 << 0)
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#define RESP_R4 (5 << 0)
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#define RESP_R6 (6 << 0)
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#define RESP_R7 (7 << 0)
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/*command types
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*bits:4~5
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*/
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#define CMD_MASK (3 << 4) /* command type */
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#define CMD_AC (0 << 4)
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#define CMD_ADTC (1 << 4)
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#define CMD_BC (2 << 4)
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#define CMD_BCR (3 << 4)
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#define resp_type(cmd) ((cmd)->flags & RESP_MASK)
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/*spi rsponse types
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*bits:6~8
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*/
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#define RESP_SPI_MASK (0x7 << 6)
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#define RESP_SPI_R1 (1 << 6)
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#define RESP_SPI_R1B (2 << 6)
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#define RESP_SPI_R2 (3 << 6)
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#define RESP_SPI_R3 (4 << 6)
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#define RESP_SPI_R4 (5 << 6)
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#define RESP_SPI_R5 (6 << 6)
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#define RESP_SPI_R7 (7 << 6)
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#define spi_resp_type(cmd) ((cmd)->flags & RESP_SPI_MASK)
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/*
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* These are the command types.
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*/
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#define cmd_type(cmd) ((cmd)->flags & CMD_MASK)
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rt_int32_t err;
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struct rt_mmcsd_data *data;
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};
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struct rt_mmcsd_req {
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struct rt_mmcsd_data *data;
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struct rt_mmcsd_cmd *cmd;
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struct rt_mmcsd_cmd *stop;
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};
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/*the following is response bit*/
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#define R1_OUT_OF_RANGE (1 << 31) /* er, c */
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#define R1_ADDRESS_ERROR (1 << 30) /* erx, c */
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#define R1_BLOCK_LEN_ERROR (1 << 29) /* er, c */
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#define R1_ERASE_SEQ_ERROR (1 << 28) /* er, c */
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#define R1_ERASE_PARAM (1 << 27) /* ex, c */
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#define R1_WP_VIOLATION (1 << 26) /* erx, c */
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#define R1_CARD_IS_LOCKED (1 << 25) /* sx, a */
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#define R1_LOCK_UNLOCK_FAILED (1 << 24) /* erx, c */
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#define R1_COM_CRC_ERROR (1 << 23) /* er, b */
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#define R1_ILLEGAL_COMMAND (1 << 22) /* er, b */
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#define R1_CARD_ECC_FAILED (1 << 21) /* ex, c */
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#define R1_CC_ERROR (1 << 20) /* erx, c */
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#define R1_ERROR (1 << 19) /* erx, c */
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#define R1_UNDERRUN (1 << 18) /* ex, c */
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#define R1_OVERRUN (1 << 17) /* ex, c */
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#define R1_CID_CSD_OVERWRITE (1 << 16) /* erx, c, CID/CSD overwrite */
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#define R1_WP_ERASE_SKIP (1 << 15) /* sx, c */
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#define R1_CARD_ECC_DISABLED (1 << 14) /* sx, a */
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#define R1_ERASE_RESET (1 << 13) /* sr, c */
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#define R1_STATUS(x) (x & 0xFFFFE000)
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#define R1_CURRENT_STATE(x) ((x & 0x00001E00) >> 9) /* sx, b (4 bits) */
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#define R1_READY_FOR_DATA (1 << 8) /* sx, a */
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#define R1_APP_CMD (1 << 5) /* sr, c */
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#define R1_SPI_IDLE (1 << 0)
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#define R1_SPI_ERASE_RESET (1 << 1)
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#define R1_SPI_ILLEGAL_COMMAND (1 << 2)
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#define R1_SPI_COM_CRC (1 << 3)
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#define R1_SPI_ERASE_SEQ (1 << 4)
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#define R1_SPI_ADDRESS (1 << 5)
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#define R1_SPI_PARAMETER (1 << 6)
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/* R1 bit 7 is always zero */
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#define R2_SPI_CARD_LOCKED (1 << 8)
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#define R2_SPI_WP_ERASE_SKIP (1 << 9) /* or lock/unlock fail */
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#define R2_SPI_LOCK_UNLOCK_FAIL R2_SPI_WP_ERASE_SKIP
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#define R2_SPI_ERROR (1 << 10)
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#define R2_SPI_CC_ERROR (1 << 11)
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#define R2_SPI_CARD_ECC_ERROR (1 << 12)
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#define R2_SPI_WP_VIOLATION (1 << 13)
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#define R2_SPI_ERASE_PARAM (1 << 14)
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#define R2_SPI_OUT_OF_RANGE (1 << 15) /* or CSD overwrite */
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#define R2_SPI_CSD_OVERWRITE R2_SPI_OUT_OF_RANGE
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#define CARD_BUSY 0x80000000 /* Card Power up status bit */
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/**
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* fls - find last (most-significant) bit set
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* @x: the word to search
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*
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* This is defined the same way as ffs.
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* Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
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*/
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rt_inline rt_uint32_t fls(rt_uint32_t val)
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{
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rt_uint32_t bit = 32;
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if (!val)
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return 0;
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if (!(val & 0xffff0000u))
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{
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val <<= 16;
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bit -= 16;
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}
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if (!(val & 0xff000000u))
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{
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val <<= 8;
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bit -= 8;
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}
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if (!(val & 0xf0000000u))
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{
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val <<= 4;
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bit -= 4;
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}
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if (!(val & 0xc0000000u))
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{
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val <<= 2;
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bit -= 2;
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}
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if (!(val & 0x80000000u))
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{
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val <<= 1;
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bit -= 1;
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}
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return bit;
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}
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#if !defined(__GNUC__)
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rt_inline rt_uint32_t ffs(rt_uint32_t x)
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{
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int r = 1;
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if (!x)
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return 0;
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if (!(x & 0xffff)) {
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x >>= 16;
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r += 16;
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}
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if (!(x & 0xff)) {
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x >>= 8;
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r += 8;
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}
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if (!(x & 0xf)) {
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x >>= 4;
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r += 4;
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}
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if (!(x & 3)) {
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x >>= 2;
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r += 2;
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}
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if (!(x & 1)) {
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x >>= 1;
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r += 1;
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}
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return r;
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}
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#endif
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void mmcsd_host_lock(struct rt_mmcsd_host *host);
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void mmcsd_host_unlock(struct rt_mmcsd_host *host);
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void mmcsd_req_complete(struct rt_mmcsd_host *host);
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void mmcsd_send_request(struct rt_mmcsd_host *host, struct rt_mmcsd_req *req);
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rt_int32_t mmcsd_send_cmd(struct rt_mmcsd_host *host, struct rt_mmcsd_cmd *cmd, int retries);
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rt_int32_t mmcsd_go_idle(struct rt_mmcsd_host *host);
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rt_int32_t mmcsd_spi_read_ocr(struct rt_mmcsd_host *host, rt_int32_t high_capacity, rt_uint32_t *ocr);
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rt_int32_t mmcsd_all_get_cid(struct rt_mmcsd_host *host, rt_uint32_t *cid);
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rt_int32_t mmcsd_get_cid(struct rt_mmcsd_host *host, rt_uint32_t *cid);
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rt_int32_t mmcsd_get_csd(struct rt_mmcsd_card *card, rt_uint32_t *csd);
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rt_int32_t mmcsd_select_card(struct rt_mmcsd_card *card);
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rt_int32_t mmcsd_deselect_cards(struct rt_mmcsd_card *host);
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rt_int32_t mmcsd_spi_use_crc(struct rt_mmcsd_host *host, rt_int32_t use_crc);
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void mmcsd_set_chip_select(struct rt_mmcsd_host *host, rt_int32_t mode);
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void mmcsd_set_clock(struct rt_mmcsd_host *host, rt_uint32_t clk);
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void mmcsd_set_bus_mode(struct rt_mmcsd_host *host, rt_uint32_t mode);
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void mmcsd_set_bus_width(struct rt_mmcsd_host *host, rt_uint32_t width);
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void mmcsd_set_data_timeout(struct rt_mmcsd_data *data, const struct rt_mmcsd_card *card);
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rt_uint32_t mmcsd_select_voltage(struct rt_mmcsd_host *host, rt_uint32_t ocr);
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void mmcsd_change(struct rt_mmcsd_host *host);
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void mmcsd_detect(void *param);
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struct rt_mmcsd_host *mmcsd_alloc_host(void);
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void mmcsd_free_host(struct rt_mmcsd_host *host);
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void rt_mmcsd_core_init(void);
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void rt_mmcsd_blk_init(void);
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rt_int32_t rt_mmcsd_blk_probe(struct rt_mmcsd_card *card);
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void rt_mmcsd_blk_remove(struct rt_mmcsd_card *card);
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#ifdef __cplusplus
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}
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#endif
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#endif
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