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Kernel: Add an SD card driver for the aarch64 port

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Co-authored-by: Ollrogge <nils-ollrogge@outlook.de>
This commit is contained in:
Marco Cutecchia 2023-03-16 10:54:29 +01:00 • committed by Linus Groh
parent bb8092d6a1
commit c91db6ec97
13 changed files with 1465 additions and 0 deletions
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354
Kernel/Storage/SD/Commands.h Normal file
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/*
* Copyright (c) 2023, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Types.h>
namespace Kernel::SD {
// Relevant Specifications:
// * (SDHC): SD Host Controller Simplified Specification (https://www.sdcard.org/downloads/pls/)
// * (PLSS) Physical Layer Simplified Specification (https://www.sdcard.org/downloads/pls/)
// PLSS 4.7.4: "Detailed Command Description"
enum class CommandIndex : u8 {
GoIdleState = 0,
AllSendCid = 2,
SendRelativeAddr = 3,
AppSetBusWidth = 6,
SelectCard = 7,
SendIfCond = 8,
SendCsd = 9,
SetBlockLen = 16,
ReadSingleBlock = 17,
ReadMultipleBlock = 18,
WriteSingleBlock = 24,
WriteMultipleBlock = 25,
AppSendOpCond = 41,
AppSendScr = 51,
AppCmd = 55,
};
enum class CommandType : u8 {
Normal,
Suspend,
Resume,
Abort
};
enum class ResponseType : u8 {
NoResponse,
ResponseOf136Bits,
ResponseOf48Bits,
ResponseOf48BitsWithBusy
};
enum class DataTransferDirection : u8 {
HostToCard,
CardToHost
};
enum class SendAutoCommand : u8 {
Disabled,
Command12,
Command23
};
// SDHC 2.2.5 & 2.2.6: "Transfer Mode Register" & "Command Register"
union Command {
u32 raw;
struct {
u32 reserved0 : 1;
u32 block_counter : 1;
SendAutoCommand auto_command : 2;
DataTransferDirection direction : 1;
u32 multiblock : 1;
u32 reserved1 : 10;
ResponseType response_type : 2;
u32 reserved2 : 1;
u32 crc_enable : 1;
u32 idx_enable : 1;
u32 is_data : 1;
CommandType type : 2;
CommandIndex index : 6;
u32 reserved3 : 2;
};
bool requires_dat_line() const
{
return is_data;
}
bool uses_transfer_complete_interrupt() const
{
// FIXME: I don't know how to determine this.
return false;
}
};
static_assert(AssertSize<Command, 4>());
namespace Commands {
constexpr Command go_idle_state = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::HostToCard,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::NoResponse,
.reserved2 = 0,
.crc_enable = 0,
.idx_enable = 0,
.is_data = 0,
.type = CommandType::Normal,
.index = CommandIndex::GoIdleState,
.reserved3 = 0
};
constexpr Command all_send_cid = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::HostToCard,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf136Bits,
.reserved2 = 0,
.crc_enable = 1,
.idx_enable = 0,
.is_data = 0,
.type = CommandType::Normal,
.index = CommandIndex::AllSendCid,
.reserved3 = 0
};
constexpr Command send_relative_addr = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::HostToCard,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf48Bits,
.reserved2 = 0,
.crc_enable = 1,
.idx_enable = 0,
.is_data = 0,
.type = CommandType::Normal,
.index = CommandIndex::SendRelativeAddr,
.reserved3 = 0
};
constexpr Command app_set_bus_width = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::HostToCard,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf48Bits,
.reserved2 = 0,
.crc_enable = 1,
.idx_enable = 0,
.is_data = 0,
.type = CommandType::Normal,
.index = CommandIndex::AppSetBusWidth,
.reserved3 = 0
};
constexpr Command select_card = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::HostToCard,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf48BitsWithBusy,
.reserved2 = 0,
.crc_enable = 1,
.idx_enable = 0,
.is_data = 0,
.type = CommandType::Normal,
.index = CommandIndex::SelectCard,
.reserved3 = 0
};
constexpr Command send_if_cond = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::HostToCard,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf48Bits,
.reserved2 = 0,
.crc_enable = 1,
.idx_enable = 0,
.is_data = 0,
.type = CommandType::Normal,
.index = CommandIndex::SendIfCond,
.reserved3 = 0
};
constexpr Command send_csd = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::HostToCard,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf136Bits,
.reserved2 = 0,
.crc_enable = 1,
.idx_enable = 0,
.is_data = 0,
.type = CommandType::Normal,
.index = CommandIndex::SendCsd,
.reserved3 = 0
};
constexpr Command set_block_len = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::HostToCard,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf48Bits,
.reserved2 = 0,
.crc_enable = 1,
.idx_enable = 0,
.is_data = 0,
.type = CommandType::Normal,
.index = CommandIndex::SetBlockLen,
.reserved3 = 0
};
constexpr Command read_single_block = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::CardToHost,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf48Bits,
.reserved2 = 0,
.crc_enable = 1,
.idx_enable = 0,
.is_data = 1,
.type = CommandType::Normal,
.index = CommandIndex::ReadSingleBlock,
.reserved3 = 0
};
constexpr Command read_multiple_block = {
.reserved0 = 0,
.block_counter = 1,
.auto_command = SendAutoCommand::Command12,
.direction = DataTransferDirection::CardToHost,
.multiblock = 1,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf48Bits,
.reserved2 = 0,
.crc_enable = 1,
.idx_enable = 0,
.is_data = 1,
.type = CommandType::Normal,
.index = CommandIndex::ReadMultipleBlock,
.reserved3 = 0
};
constexpr Command write_single_block = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::HostToCard,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf48Bits,
.reserved2 = 0,
.crc_enable = 1,
.idx_enable = 0,
.is_data = 1,
.type = CommandType::Normal,
.index = CommandIndex::WriteSingleBlock,
.reserved3 = 0
};
constexpr Command write_multiple_block = {
.reserved0 = 0,
.block_counter = 1,
.auto_command = SendAutoCommand::Command12,
.direction = DataTransferDirection::HostToCard,
.multiblock = 1,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf48Bits,
.reserved2 = 0,
.crc_enable = 1,
.idx_enable = 0,
.is_data = 1,
.type = CommandType::Normal,
.index = CommandIndex::WriteMultipleBlock,
.reserved3 = 0
};
constexpr Command app_send_op_cond = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::HostToCard,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf48Bits,
.reserved2 = 0,
.crc_enable = 0,
.idx_enable = 0,
.is_data = 0,
.type = CommandType::Normal,
.index = CommandIndex::AppSendOpCond,
.reserved3 = 0
};
constexpr Command app_send_scr = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::CardToHost,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf48Bits,
.reserved2 = 0,
.crc_enable = 0,
.idx_enable = 0,
.is_data = 1,
.type = CommandType::Normal,
.index = CommandIndex::AppSendScr,
.reserved3 = 0
};
constexpr Command app_cmd = {
.reserved0 = 0,
.block_counter = 0,
.auto_command = SendAutoCommand::Disabled,
.direction = DataTransferDirection::HostToCard,
.multiblock = 0,
.reserved1 = 0,
.response_type = ResponseType::ResponseOf48Bits,
.reserved2 = 0,
.crc_enable = 1,
.idx_enable = 0,
.is_data = 0,
.type = CommandType::Normal,
.index = CommandIndex::AppCmd,
.reserved3 = 0
};
}
}