started writing register definitions

This commit is contained in:
pca 2020-04-28 23:00:47 +08:00
parent 614b1ef350
commit 3238dae99f
1 changed files with 228 additions and 0 deletions

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use volatile_register::{RO, RW, WO};
use libregister::{register, register_at, register_bit, register_bits, register_bits_typed};
#[allow(unused)]
#[repr(u8)]
pub enum CommandType {
Normal = 0b00,
Suspend = 0b01,
Resume = 0b10,
Abort = 0b11,
}
#[allow(unused)]
#[repr(u8)]
pub enum ResponseTypeSelect {
NoResponse = 0b00,
Length136 = 0b01,
Length48 = 0b10,
Legnth48Check = 0b11,
}
#[repr(C)]
pub struct RegisterBlock {
pub sdma_system_address: RM<u32>,
pub block_size_block_count: BockSizeBlockCount,
pub argument: RW<u32>,
pub transfer_mode_command: TransferModeCommand,
pub responses: [RO<u32>; 4],
pub buffer: RW<u32>,
pub present_state: PresentState,
}
register_at!(RegisterBlock, 0xE0100000, sd0);
register_at!(RegisterBlock, 0xE0101000, sd1);
register!(block_size_block_count, BlockSizeBlockCount, RW, u32);
register_bits!(
block_size_block_count,
/// Current transfer block count.
blocks_count,
u16,
16,
31
);
register_bits!(
block_size_block_count,
/// Host SDMA Buffer Size, size = 2^(val + 2) KB.
dma_buffer_size,
u8,
12,
14
);
register_bits!(
block_size_block_count,
/// Block size for data transfer. Unit: byte.
transfer_block_size,
u16,
0,
11
);
register!(transfer_mode_command, TransferModeCommand, RW, u32);
register_bits!(
transfer_mode_command,
/// Command Number.
command_index,
u8,
24,
29
);
register_bits_typed!(
transfer_mode_command,
/// Command type register.
command_type,
u8,
CommandType,
24,
29
);
register_bit!(
transfer_mode_command,
/// 1 if data is present and shall be transferred using the DAT line.
data_present_select,
21
);
register_bit!(
transfer_mode_command,
/// If the index field shall be checked.
index_check_en,
20
);
register_bit!(
transfer_mode_command,
/// If CRC shall be checked.
crc_check_en,
19
);
register_bits_typed!(
transfer_mode_command,
/// Different type of response.
response_type_select,
u8,
ResponseTypeSelect,
16,
17
);
register_bit!(
transfer_mode_command,
/// Enables the multi block DAT line data transfer.
multi_block_en,
5
);
register_bit!(
transfer_mode_command,
/// 1 if read (card to host), 0 if write (host to card).
direction_select,
4
);
register_bit!(
transfer_mode_command,
/// If CMD12 shall be issued automatically when last block transfer is completed.
auto_cmd12_en,
2
);
register_bit!(
transfer_mode_command,
/// Enable the block count register.
block_count_en,
1
);
register_bit!(
transfer_mode_command,
/// Enable DMA,
dma_en,
0
);
register!(present_state, PresentState, RO, u32);
register_bit!(
present_state,
/// CMD Line Signal Level.
cmd_line_level,
24
);
register_bit!(
present_state,
/// Signal level in DAT[3]
dat3_level,
23
);
register_bit!(
present_state,
/// Signal level in DAT[2]
dat2_level,
22
);
register_bit!(
present_state,
/// Signal level in DAT[1]
dat1_level,
21
);
register_bit!(
present_state,
/// Signal level in DAT[0]
dat0_level,
20
);
register_bit!(
present_state,
/// Write enabled and inverse of SDx_WP pin level.
write_enabled,
19
);
register_bit!(
present_state,
/// Card detected and inverse of SDx_CDn pin level.
card_detected,
18
);
regsiter_bit!(
present_state,
card_state_stable,
17
);
register_bit!(
present_state,
card_inserted,
16
);
register_bit!(
present_state,
buffer_read_en,
11,
);
register_bit!(
present_state,
buffer_write_en,
10
);
register_bit!(
present_state,
read_transfer_active,
9
);
register_bit!(
present_state,
write_transfer_active,
8
);
register_bit!(
present_state,
dat_line_active,
2
);
register_bit!(
present_state,
command_inhibit_dat,
1
);
register_bit!(
present_state,
command_inhibit_cmd,
0
);