109 lines
2.1 KiB
C++
109 lines
2.1 KiB
C++
#ifndef _SDCard_emmc_h
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#define _SDCard_emmc_h
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#define PACKED __attribute__ ((packed))
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#include "types.h"
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/*
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#include <circle/device.h>
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//#include <circle/interrupt.h>
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#include <circle/timer.h>
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#include <circle/actled.h>
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#include <circle/fs/partitionmanager.h>
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#include <circle/logger.h>
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#include <circle/types.h>
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*/
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#define BOOT_SIGNATURE 0xAA55
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struct TSCR // SD configuration register
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{
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u32 scr[2];
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u32 sd_bus_widths;
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int sd_version;
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};
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class CEMMCDevice
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{
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public:
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CEMMCDevice();
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~CEMMCDevice();
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bool Initialize(void);
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int Read(void *pBuffer, unsigned nCount);
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int Write(const void *pBuffer, unsigned nCount);
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unsigned long long Seek(unsigned long long ullOffset);
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int DoRead2(u8 *buf, size_t buf_size, u32 block_no);
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int DoRead(u8 *buf, size_t buf_size, u32 block_no);
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int DoWrite(u8 *buf, size_t buf_size, u32 block_no);
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private:
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bool PowerOn(void);
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void PowerOff(void);
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u32 GetBaseClock(void);
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u32 GetClockDivider(u32 base_clock, u32 target_rate);
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int SwitchClockRate(u32 base_clock, u32 target_rate);
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int ResetCmd(void);
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int ResetDat(void);
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void IssueCommandInt(u32 cmd_reg, u32 argument, int timeout);
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void HandleCardInterrupt(void);
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void HandleInterrupts(void);
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bool IssueCommand(u32 command, u32 argument, int timeout = 500000);
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int CardReset(void);
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int CardInit(void);
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int EnsureDataMode(void);
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int DoDataCommand(int is_write, u8 *buf, size_t buf_size, u32 block_no);
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int TimeoutWait(unsigned reg, unsigned mask, int value, unsigned usec);
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void usDelay(unsigned usec);
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private:
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u64 m_ullOffset;
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u32 m_hci_ver;
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// was: struct emmc_block_dev
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u32 m_device_id[4];
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u32 m_card_supports_sdhc;
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u32 m_card_supports_18v;
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u32 m_card_ocr;
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u32 m_card_rca;
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u32 m_last_interrupt;
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u32 m_last_error;
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TSCR m_SCR;
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int m_failed_voltage_switch;
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u32 m_last_cmd_reg;
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u32 m_last_cmd;
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u32 m_last_cmd_success;
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u32 m_last_r0;
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u32 m_last_r1;
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u32 m_last_r2;
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u32 m_last_r3;
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void *m_buf;
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int m_blocks_to_transfer;
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size_t m_block_size;
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int m_card_removal;
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u32 m_base_clock;
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static const char *sd_versions[];
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static const char *err_irpts[];
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static const u32 sd_commands[];
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static const u32 sd_acommands[];
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};
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#endif
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