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i2c: implement BusAccessor::WriteHeader

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This commit is contained in:
Michael Scire 2020-10-31 18:24:26 -07:00
parent 2744a614de
commit 2d2b11a2d2
1 changed files with 65 additions and 2 deletions
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67
libraries/libstratosphere/source/i2c/driver/board/nintendo_nx/impl/i2c_bus_accessor.cpp
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@ -18,6 +18,40 @@
namespace ams::i2c::driver::board::nintendo_nx::impl {
namespace {
#define IO_PACKET_BITS_MASK(NAME) REG_NAMED_BITS_MASK (_IMPL_IO_PACKET_, NAME)
#define IO_PACKET_BITS_VALUE(NAME, VALUE) REG_NAMED_BITS_VALUE (_IMPL_IO_PACKET_, NAME, VALUE)
#define IO_PACKET_BITS_ENUM(NAME, ENUM) REG_NAMED_BITS_ENUM (_IMPL_IO_PACKET_, NAME, ENUM)
#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)
#define DEFINE_IO_PACKET_REG(NAME, __OFFSET__, __WIDTH__) REG_DEFINE_NAMED_REG (_IMPL_IO_PACKET_, NAME, __OFFSET__, __WIDTH__)
#define DEFINE_IO_PACKET_REG_BIT_ENUM(NAME, __OFFSET__, ZERO, ONE) REG_DEFINE_NAMED_BIT_ENUM (_IMPL_IO_PACKET_, NAME, __OFFSET__, ZERO, ONE)
#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)
#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)
#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)
DEFINE_IO_PACKET_REG_THREE_BIT_ENUM(HEADER_WORD0_PKT_TYPE, 0, REQUEST, RESPONSE, INTERRUPT, STOP, RSVD4, RSVD5, RSVD6, RSVD7);
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)
DEFINE_IO_PACKET_REG(HEADER_WORD0_CONTROLLER_ID, 12, 4);
DEFINE_IO_PACKET_REG(HEADER_WORD0_PKT_ID, 16, 8);
DEFINE_IO_PACKET_REG_TWO_BIT_ENUM(HEADER_WORD0_PROT_HDR_SZ, 28, 1_WORD, 2_WORD, 3_WORD, 4_WORD);
DEFINE_IO_PACKET_REG(HEADER_WORD1_PAYLOAD_SIZE, 0, 11);
DEFINE_IO_PACKET_REG(PROTOCOL_HEADER_SLAVE_ADDR, 0, 10);
DEFINE_IO_PACKET_REG(PROTOCOL_HEADER_HS_MASTER_ADDR, 12, 3);
DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_CONTINUE_XFER, 15, USE_REPEAT_START_TOP, CONTINUE);
DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_REPEAT_START_STOP, 16, STOP_CONDITION, REPEAT_START_CONDITION);
DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_IE, 17, DISABLE, ENABLE);
DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_ADDRESS_MODE, 18, SEVEN_BIT, TEN_BIT);
DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_READ_WRITE, 19, WRITE, READ);
DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_SEND_START_BYTE, 20, DISABLE, ENABLE);
DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_CONTINUE_ON_NACK, 21, DISABLE, ENABLE);
DEFINE_IO_PACKET_REG_BIT_ENUM(PROTOCOL_HEADER_HS_MODE, 22, DISABLE, ENABLE);
}
void I2cBusAccessor::Initialize(dd::PhysicalAddress reg_paddr, size_t reg_size, os::InterruptName intr, bool pb, SpeedMode sm) {
AMS_ASSERT(this->state == State::NotInitialized);
@ -313,8 +347,37 @@ namespace ams::i2c::driver::board::nintendo_nx::impl {
}
void I2cBusAccessor::WriteHeader(Xfer xfer, size_t size, TransactionOption option, u16 slave_address, AddressingMode addressing_mode) {
/* TODO */
AMS_ABORT();
/* Parse interesting values from our arguments. */
const bool is_read = xfer == Xfer_Read;
const bool is_7_bit = addressing_mode == AddressingMode_SevenBit;
const bool is_stop = (option & TransactionOption_StopCondition) != 0;
const bool is_hs = this->speed_mode == SpeedMode_HighSpeed;
const u32 slave_addr = ((static_cast<u32>(slave_address) & 0x7F) << 1) | (is_read ? 1 : 0);
/* Flush fifos. */
this->FlushFifos();
/* Enqueue the first header word. */
reg::Write(this->registers->tx_packet_fifo, IO_PACKET_BITS_ENUM (HEADER_WORD0_PROT_HDR_SZ, 1_WORD),
IO_PACKET_BITS_VALUE(HEADER_WORD0_PKT_ID, 0),
IO_PACKET_BITS_VALUE(HEADER_WORD0_CONTROLLER_ID, 0),
IO_PACKET_BITS_ENUM (HEADER_WORD0_PROTOCOL, I2C),
IO_PACKET_BITS_ENUM (HEADER_WORD0_PKT_TYPE, REQUEST));
/* Enqueue the second header word. */
reg::Write(this->registers->tx_packet_fifo, IO_PACKET_BITS_VALUE(HEADER_WORD1_PAYLOAD_SIZE, static_cast<u32>(size - 1)));
/* Enqueue the protocol header word. */
reg::Write(this->registers->tx_packet_fifo, IO_PACKET_BITS_ENUM_SEL(PROTOCOL_HEADER_HS_MODE, is_hs, ENABLE, DISABLE),
IO_PACKET_BITS_ENUM (PROTOCOL_HEADER_CONTINUE_ON_NACK, DISABLE),
IO_PACKET_BITS_ENUM (PROTOCOL_HEADER_SEND_START_BYTE, DISABLE),
IO_PACKET_BITS_ENUM_SEL(PROTOCOL_HEADER_READ_WRITE, is_read, READ, WRITE),
IO_PACKET_BITS_ENUM_SEL(PROTOCOL_HEADER_ADDRESS_MODE, is_7_bit, SEVEN_BIT, TEN_BIT),
IO_PACKET_BITS_ENUM (PROTOCOL_HEADER_IE, ENABLE),
IO_PACKET_BITS_ENUM_SEL(PROTOCOL_HEADER_REPEAT_START_STOP, is_stop, STOP_CONDITION, REPEAT_START_CONDITION),
IO_PACKET_BITS_ENUM (PROTOCOL_HEADER_CONTINUE_XFER, USE_REPEAT_START_TOP),
IO_PACKET_BITS_VALUE (PROTOCOL_HEADER_HS_MASTER_ADDR, 0),
IO_PACKET_BITS_VALUE (PROTOCOL_HEADER_SLAVE_ADDR, slave_addr));
}
void I2cBusAccessor::ResetController() const {