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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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51
Kernel/Storage/SD/SDMemoryCard.cpp Normal file
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/*
* Copyright (c) 2023, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <Kernel/Storage/SD/Commands.h>
#include <Kernel/Storage/SD/SDHostController.h>
#include <Kernel/Storage/SD/SDMemoryCard.h>
namespace Kernel {
SDMemoryCard::SDMemoryCard(SDHostController& sdhc, StorageDevice::LUNAddress lun_address, u32 hardware_relative_controller_id, u32 block_len, u64 capacity_in_blocks, u32 relative_card_address, SD::OperatingConditionRegister ocr, SD::CardIdentificationRegister cid, SD::SDConfigurationRegister scr)
: StorageDevice(lun_address, hardware_relative_controller_id, block_len,
capacity_in_blocks)
, m_sdhc(sdhc)
, m_relative_card_address(relative_card_address)
, m_ocr(ocr)
, m_cid(cid)
, m_scr(scr)
{
}
void SDMemoryCard::start_request(AsyncBlockDeviceRequest& request)
{
MutexLocker locker(m_lock);
VERIFY(request.block_size() == block_size());
auto buffer = request.buffer();
u32 block_address = request.block_index();
if (card_addressing_mode() == CardAddressingMode::ByteAddressing) {
block_address *= block_size();
}
if (request.request_type() == AsyncBlockDeviceRequest::RequestType::Write) {
if (m_sdhc.write_block({}, block_address, request.block_count(), buffer).is_error()) {
request.complete(AsyncDeviceRequest::Failure);
return;
}
} else {
if (m_sdhc.read_block({}, block_address, request.block_count(), buffer).is_error()) {
request.complete(AsyncDeviceRequest::Failure);
return;
}
}
request.complete(AsyncDeviceRequest::Success);
}
}