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94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
//
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// Target.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 17/08/2019.
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// Copyright © 2019 Thomas Harte. All rights reserved.
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//
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#include "Target.hpp"
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using namespace SCSI::Target;
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CommandState::CommandState(const std::vector<uint8_t> &data, const std::vector<uint8_t> &received) : data_(data), received_(received) {}
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uint32_t CommandState::address() const {
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switch(data_.size()) {
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default: return 0;
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case 6:
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return
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(uint32_t(data_[1]) << 16) |
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(uint32_t(data_[2]) << 8) |
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uint32_t(data_[3]);
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case 10:
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case 12:
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return
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(uint32_t(data_[1]) << 24) |
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(uint32_t(data_[2]) << 16) |
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(uint32_t(data_[3]) << 8) |
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uint32_t(data_[4]);
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}
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}
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uint16_t CommandState::number_of_blocks() const {
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switch(data_.size()) {
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default: return 0;
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case 6:
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return uint16_t(data_[4]);
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case 10:
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return uint16_t((data_[7] << 8) | data_[8]);
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}
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}
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CommandState::ReadWrite CommandState::read_write_specs() const {
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ReadWrite specs;
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specs.address = address();
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specs.number_of_blocks = number_of_blocks();
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if(!specs.number_of_blocks && (data_.size() == 6)) {
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specs.number_of_blocks = 256;
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}
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return specs;
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}
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size_t CommandState::allocated_inquiry_bytes() const {
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// 0 means 256 bytes allocated for inquiry.
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return size_t(((data_[4] - 1) & 0xff) + 1);
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}
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CommandState::ModeSense CommandState::mode_sense_specs() const {
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ModeSense specs;
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specs.exclude_block_descriptors = (data_[1] & 0x08);
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specs.page_control_values = ModeSense::PageControlValues(data_[2] >> 5);
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specs.page_code = data_[2] & 0x3f;
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specs.subpage_code = data_[3];
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specs.allocated_bytes = number_of_blocks();
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return specs;
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}
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CommandState::ReadBuffer CommandState::read_buffer_specs() const {
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ReadBuffer specs;
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specs.mode = ReadBuffer::Mode(data_[1]&7);
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if(specs.mode > ReadBuffer::Mode::Reserved) specs.mode = ReadBuffer::Mode::Reserved;
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specs.buffer_id = data_[2];
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specs.buffer_offset = uint32_t((data_[3] << 16) | (data_[4] << 8) | data_[5]);
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specs.buffer_length = uint32_t((data_[6] << 16) | (data_[7] << 8) | data_[8]);
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return specs;
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}
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CommandState::ModeSelect CommandState::mode_select_specs() const {
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ModeSelect specs;
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specs.parameter_list_length = number_of_blocks();
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specs.content_is_vendor_specific = !(data_[1] & 0x10);
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specs.revert_to_default = (data_[1] & 0x02);
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specs.save_pages = (data_[1] & 0x01);
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return specs;
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}
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