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500b7b08d6
The Storage subsystem, like the Audio and HID subsystems, exposes Unix device files (for example, in the /dev directory). To ensure consistency across the repository, we should make the Storage subsystem to reside in the Kernel/Devices directory like the two other mentioned subsystems.
52 lines
1.7 KiB
C++
52 lines
1.7 KiB
C++
/*
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* Copyright (c) 2023, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/Devices/Storage/SD/Commands.h>
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#include <Kernel/Devices/Storage/SD/SDHostController.h>
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#include <Kernel/Devices/Storage/SD/SDMemoryCard.h>
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namespace Kernel {
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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)
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: StorageDevice(lun_address, hardware_relative_controller_id, block_len,
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capacity_in_blocks)
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, m_sdhc(sdhc)
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, m_relative_card_address(relative_card_address)
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, m_ocr(ocr)
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, m_cid(cid)
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, m_scr(scr)
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{
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}
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void SDMemoryCard::start_request(AsyncBlockDeviceRequest& request)
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{
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// FIXME: Make this asynchronous
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MutexLocker locker(m_lock);
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VERIFY(request.block_size() == block_size());
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auto buffer = request.buffer();
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u32 block_address = request.block_index();
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if (card_addressing_mode() == CardAddressingMode::ByteAddressing) {
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block_address *= block_size();
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}
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if (request.request_type() == AsyncBlockDeviceRequest::RequestType::Write) {
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if (m_sdhc.write_block({}, block_address, request.block_count(), buffer).is_error()) {
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request.complete(AsyncDeviceRequest::Failure);
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return;
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}
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} else {
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if (m_sdhc.read_block({}, block_address, request.block_count(), buffer).is_error()) {
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request.complete(AsyncDeviceRequest::Failure);
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return;
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}
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}
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request.complete(AsyncDeviceRequest::Success);
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}
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}
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