ESPIDecoder.h

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* libscopeprotocols                                                                                                    *
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#ifndef ESPIDecoder_h
#define ESPIDecoder_h
 
#include "../scopehal/PacketDecoder.h"
 
class ESPISymbol
{
public:
 
    enum ESpiType
    {
        TYPE_COMMAND_TYPE,
 
        TYPE_CAPS_ADDR,
 
        TYPE_COMMAND_DATA_8,
        TYPE_COMMAND_DATA_32,
        TYPE_COMMAND_CRC_GOOD,
        TYPE_COMMAND_CRC_BAD,
 
        TYPE_RESPONSE_OP,
        TYPE_RESPONSE_STATUS,
        TYPE_RESPONSE_DATA_32,
        TYPE_RESPONSE_CRC_GOOD,
        TYPE_RESPONSE_CRC_BAD,
 
        TYPE_VWIRE_COUNT,
        TYPE_VWIRE_INDEX,
        TYPE_VWIRE_DATA,
 
        TYPE_GENERAL_CAPS_RD,
        TYPE_GENERAL_CAPS_WR,
        TYPE_CH0_CAPS_RD,
        TYPE_CH0_CAPS_WR,
        TYPE_CH1_CAPS_RD,
        TYPE_CH1_CAPS_WR,
        TYPE_CH2_CAPS_RD,
        TYPE_CH2_CAPS_WR,
 
        TYPE_REQUEST_TAG,
        TYPE_REQUEST_LEN,
 
        TYPE_FLASH_REQUEST_TYPE,
        TYPE_FLASH_REQUEST_ADDR,
        TYPE_FLASH_REQUEST_DATA,
 
        TYPE_SMBUS_REQUEST_TYPE,
        TYPE_SMBUS_REQUEST_ADDR,
        TYPE_SMBUS_REQUEST_DATA,
 
        TYPE_IO_ADDR,
        TYPE_IO_DATA,
 
        TYPE_WAIT,
 
        TYPE_COMPLETION_TYPE,
        TYPE_COMPLETION_DATA,
 
        TYPE_ERROR
    } m_type;
 
    //Table 3
    enum ESpiCommand
    {
        //Table 6
        COMMAND_PUT_PC                  = 0x00,
        COMMAND_GET_PC                  = 0x01,
        COMMAND_PUT_NP                  = 0x02,
        COMMAND_GET_NP                  = 0x03,
        COMMAND_PUT_OOB                 = 0x06,
        COMMAND_GET_OOB                 = 0x07,
        COMMAND_PUT_FLASH_C             = 0x08,
        COMMAND_GET_FLASH_NP            = 0x09,
 
        //Figure 37
        COMMAND_PUT_IORD_SHORT_x1       = 0x40,
        COMMAND_PUT_IORD_SHORT_x2       = 0x41,
        COMMAND_PUT_IORD_SHORT_x4       = 0x43,
        COMMAND_PUT_IOWR_SHORT_x1       = 0x44,
        COMMAND_PUT_IOWR_SHORT_x2       = 0x45,
        COMMAND_PUT_IOWR_SHORT_x4       = 0x47,
        COMMAND_PUT_MEMRD32_SHORT_x1    = 0x48,
        COMMAND_PUT_MEMRD32_SHORT_x2    = 0x49,
        COMMAND_PUT_MEMRD32_SHORT_x4    = 0x4b,
        COMMAND_PUT_MEMWR32_SHORT_x1    = 0x4c,
        COMMAND_PUT_MEMWR32_SHORT_x2    = 0x4d,
        COMMAND_PUT_MEMWR32_SHORT_x4    = 0x4f,
 
        //Figure 40
        COMMAND_PUT_VWIRE               = 0x04,
        COMMAND_GET_VWIRE               = 0x05,
 
        COMMAND_GET_STATUS              = 0x25,
        COMMAND_SET_CONFIGURATION       = 0x22,
        COMMAND_GET_CONFIGURATION       = 0x21,
        COMMAND_RESET                   = 0xff,
 
        COMMAND_NONE                    = 0x100
    };
 
    //Table 4
    enum ESpiResponse
    {
        RESPONSE_DEFER          = 0x1,
        RESPONSE_NONFATAL_ERROR = 0x2,
        RESPONSE_FATAL_ERROR    = 0x3,
        RESPONSE_ACCEPT         = 0x8,
        RESPONSE_NONE           = 0xf   //also NO_RESPONSE with other bits high
    };
 
    enum ESpiCompletion
    {
        COMPLETION_NONE         = 0,
        COMPLETION_PERIPHERAL   = 1,
        COMPLETION_VWIRE        = 2,
        COMPLETION_FLASH        = 3
    };
 
    //Table 6
    enum ESpiCycleType
    {
        CYCLE_READ              = 0,
        CYCLE_WRITE             = 1,
        CYCLE_ERASE             = 2,
 
        CYCLE_SMBUS             = 0x21,
 
        // completion types
        CYCLE_SUCCESS_NODATA        = 0x06,
        CYCLE_SUCCESS_DATA_MIDDLE   = 0x09,
        CYCLE_SUCCESS_DATA_FIRST    = 0x0b,
        CYCLE_SUCCESS_DATA_LAST     = 0x0d,
        CYCLE_SUCCESS_DATA_ONLY     = 0x0f,
 
        CYCLE_FAIL_LAST             = 0x08,
        CYCLE_FAIL_ONLY             = 0x0e
    };
 
    uint64_t m_data;
    ESPISymbol()
    {}
 
    ESPISymbol(ESpiType type, uint64_t data = 0)
     : m_type(type)
     , m_data(data)
    {}
 
    bool operator== (const ESPISymbol& s) const
    {
        return (m_type == s.m_type) && (m_data == s.m_data);
    }
};
 
class ESPIWaveform : public SparseWaveform<ESPISymbol>
{
public:
    ESPIWaveform () : SparseWaveform<ESPISymbol>() {};
    virtual std::string GetText(size_t) override;
    virtual std::string GetColor(size_t) override;
};
 
class ESPIDecoder : public PacketDecoder
{
public:
    ESPIDecoder(const std::string& color);
 
    virtual void Refresh() override;
 
    std::vector<std::string> GetHeaders() override;
 
    static std::string GetProtocolName();
 
    virtual bool ValidateChannel(size_t i, StreamDescriptor stream) override;
 
    virtual bool CanMerge(Packet* first, Packet* cur, Packet* next) override;
    virtual Packet* CreateMergedHeader(Packet* pack, size_t i) override;
 
    PROTOCOL_DECODER_INITPROC(ESPIDecoder)
 
protected:
    uint8_t UpdateCRC8(uint8_t crc, uint8_t data);
 
    enum BusWidth
    {
        BUS_WIDTH_AUTO,
        BUS_WIDTH_X1,
        BUS_WIDTH_X4
    };
 
    std::string m_busWidthName;
};
 
#endif