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i2c: implement BusAccessor::WriteHeader
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1 changed files with 65 additions and 2 deletions
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@ -18,6 +18,40 @@
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namespace ams::i2c::driver::board::nintendo_nx::impl {
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namespace {
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#define IO_PACKET_BITS_MASK(NAME) REG_NAMED_BITS_MASK (_IMPL_IO_PACKET_, NAME)
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#define IO_PACKET_BITS_VALUE(NAME, VALUE) REG_NAMED_BITS_VALUE (_IMPL_IO_PACKET_, NAME, VALUE)
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#define IO_PACKET_BITS_ENUM(NAME, ENUM) REG_NAMED_BITS_ENUM (_IMPL_IO_PACKET_, NAME, ENUM)
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#define IO_PACKET_BITS_ENUM_SEL(NAME, __COND__, TRUE_ENUM, FALSE_ENUM) REG_NAMED_BITS_ENUM_SEL(_IMPL_IO_PACKET_, NAME, __COND__, TRUE_ENUM, FALSE_ENUM)
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#define DEFINE_IO_PACKET_REG(NAME, __OFFSET__, __WIDTH__) REG_DEFINE_NAMED_REG (_IMPL_IO_PACKET_, NAME, __OFFSET__, __WIDTH__)
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#define DEFINE_IO_PACKET_REG_BIT_ENUM(NAME, __OFFSET__, ZERO, ONE) REG_DEFINE_NAMED_BIT_ENUM (_IMPL_IO_PACKET_, NAME, __OFFSET__, ZERO, ONE)
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#define DEFINE_IO_PACKET_REG_TWO_BIT_ENUM(NAME, __OFFSET__, ZERO, ONE, TWO, THREE) REG_DEFINE_NAMED_TWO_BIT_ENUM (_IMPL_IO_PACKET_, NAME, __OFFSET__, ZERO, ONE, TWO, THREE)
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#define DEFINE_IO_PACKET_REG_THREE_BIT_ENUM(NAME, __OFFSET__, ZERO, ONE, TWO, THREE, FOUR, FIVE, SIX, SEVEN) REG_DEFINE_NAMED_THREE_BIT_ENUM(_IMPL_IO_PACKET_, NAME, __OFFSET__, ZERO, ONE, TWO, THREE, FOUR, FIVE, SIX, SEVEN)
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#define DEFINE_IO_PACKET_REG_FOUR_BIT_ENUM(NAME, __OFFSET__, ZERO, ONE, TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT, NINE, TEN, ELEVEN, TWELVE, THIRTEEN, FOURTEEN, FIFTEEN) REG_DEFINE_NAMED_FOUR_BIT_ENUM (_IMPL_IO_PACKET_, NAME, __OFFSET__, ZERO, ONE, TWO, THREE, FOUR, FIVE, SIX, SEVEN, EIGHT, NINE, TEN, ELEVEN, TWELVE, THIRTEEN, FOURTEEN, FIFTEEN)
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DEFINE_IO_PACKET_REG_THREE_BIT_ENUM(HEADER_WORD0_PKT_TYPE, 0, REQUEST, RESPONSE, INTERRUPT, STOP, RSVD4, RSVD5, RSVD6, RSVD7);
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DEFINE_IO_PACKET_REG_FOUR_BIT_ENUM(HEADER_WORD0_PROTOCOL, 4, RSVD0, I2C, RSVD2, RSVD3, RSVD4, RSVD5, RSVD6, RSVD7, RSVD8, RSVD9, RSVD10, RSVD11, RSVD12, RSVD13, RSVD14, RSVD15)
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DEFINE_IO_PACKET_REG(HEADER_WORD0_CONTROLLER_ID, 12, 4);
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DEFINE_IO_PACKET_REG(HEADER_WORD0_PKT_ID, 16, 8);
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DEFINE_IO_PACKET_REG_TWO_BIT_ENUM(HEADER_WORD0_PROT_HDR_SZ, 28, 1_WORD, 2_WORD, 3_WORD, 4_WORD);
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DEFINE_IO_PACKET_REG(HEADER_WORD1_PAYLOAD_SIZE, 0, 11);
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DEFINE_IO_PACKET_REG(PROTOCOL_HEADER_SLAVE_ADDR, 0, 10);
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DEFINE_IO_PACKET_REG(PROTOCOL_HEADER_HS_MASTER_ADDR, 12, 3);
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DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_CONTINUE_XFER, 15, USE_REPEAT_START_TOP, CONTINUE);
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DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_REPEAT_START_STOP, 16, STOP_CONDITION, REPEAT_START_CONDITION);
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DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_IE, 17, DISABLE, ENABLE);
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DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_ADDRESS_MODE, 18, SEVEN_BIT, TEN_BIT);
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DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_READ_WRITE, 19, WRITE, READ);
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DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_SEND_START_BYTE, 20, DISABLE, ENABLE);
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DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_CONTINUE_ON_NACK, 21, DISABLE, ENABLE);
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DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_HS_MODE, 22, DISABLE, ENABLE);
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}
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void I2cBusAccessor::Initialize(dd::PhysicalAddress reg_paddr, size_t reg_size, os::InterruptName intr, bool pb, SpeedMode sm) {
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AMS_ASSERT(this->state == State::NotInitialized);
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@ -313,8 +347,37 @@ namespace ams::i2c::driver::board::nintendo_nx::impl {
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}
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void I2cBusAccessor::WriteHeader(Xfer xfer, size_t size, TransactionOption option, u16 slave_address, AddressingMode addressing_mode) {
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/* TODO */
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AMS_ABORT();
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/* Parse interesting values from our arguments. */
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const bool is_read = xfer == Xfer_Read;
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const bool is_7_bit = addressing_mode == AddressingMode_SevenBit;
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const bool is_stop = (option & TransactionOption_StopCondition) != 0;
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const bool is_hs = this->speed_mode == SpeedMode_HighSpeed;
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const u32 slave_addr = ((static_cast<u32>(slave_address) & 0x7F) << 1) | (is_read ? 1 : 0);
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/* Flush fifos. */
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this->FlushFifos();
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/* Enqueue the first header word. */
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reg::Write(this->registers->tx_packet_fifo, IO_PACKET_BITS_ENUM (HEADER_WORD0_PROT_HDR_SZ, 1_WORD),
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IO_PACKET_BITS_VALUE(HEADER_WORD0_PKT_ID, 0),
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IO_PACKET_BITS_VALUE(HEADER_WORD0_CONTROLLER_ID, 0),
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IO_PACKET_BITS_ENUM (HEADER_WORD0_PROTOCOL, I2C),
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IO_PACKET_BITS_ENUM (HEADER_WORD0_PKT_TYPE, REQUEST));
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/* Enqueue the second header word. */
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reg::Write(this->registers->tx_packet_fifo, IO_PACKET_BITS_VALUE(HEADER_WORD1_PAYLOAD_SIZE, static_cast<u32>(size - 1)));
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/* Enqueue the protocol header word. */
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reg::Write(this->registers->tx_packet_fifo, IO_PACKET_BITS_ENUM_SEL(PROTOCOL_HEADER_HS_MODE, is_hs, ENABLE, DISABLE),
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IO_PACKET_BITS_ENUM (PROTOCOL_HEADER_CONTINUE_ON_NACK, DISABLE),
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IO_PACKET_BITS_ENUM (PROTOCOL_HEADER_SEND_START_BYTE, DISABLE),
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IO_PACKET_BITS_ENUM_SEL(PROTOCOL_HEADER_READ_WRITE, is_read, READ, WRITE),
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IO_PACKET_BITS_ENUM_SEL(PROTOCOL_HEADER_ADDRESS_MODE, is_7_bit, SEVEN_BIT, TEN_BIT),
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IO_PACKET_BITS_ENUM (PROTOCOL_HEADER_IE, ENABLE),
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IO_PACKET_BITS_ENUM_SEL(PROTOCOL_HEADER_REPEAT_START_STOP, is_stop, STOP_CONDITION, REPEAT_START_CONDITION),
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IO_PACKET_BITS_ENUM (PROTOCOL_HEADER_CONTINUE_XFER, USE_REPEAT_START_TOP),
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IO_PACKET_BITS_VALUE (PROTOCOL_HEADER_HS_MASTER_ADDR, 0),
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IO_PACKET_BITS_VALUE (PROTOCOL_HEADER_SLAVE_ADDR, slave_addr));
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}
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void I2cBusAccessor::ResetController() const {
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