50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
#pragma once
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#include <cstdint>
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#include "align.hpp"
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namespace maple {
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template <typename T>
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struct host_command {
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uint32_t host_instruction;
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uint32_t receive_data_storage_address;
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struct bus_data {
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uint8_t command_code;
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uint8_t destination_ap;
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uint8_t source_ap;
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uint8_t data_size;
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T data_fields;
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} bus_data;
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};
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static_assert((sizeof (host_command<uint8_t[0]>)) == 12);
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static_assert((sizeof (host_command<uint8_t[0]>[4])) == 48);
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template <typename T>
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struct host_response {
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struct bus_data {
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uint8_t command_code;
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uint8_t destination_ap;
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uint8_t source_ap;
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uint8_t data_size;
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T data_fields;
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} bus_data;
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uint8_t _pad[align_32byte((sizeof (bus_data))) - (sizeof (bus_data))];
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};
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static_assert((sizeof (host_response<uint8_t[0]>)) == align_32byte((sizeof (host_response<uint8_t[0]>))));
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void dma_start(uint32_t const * const command_buf,
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const uint32_t command_size,
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uint32_t const * const receive_buf,
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const uint32_t receive_size
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);
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template <typename T>
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constexpr uint32_t sizeof_command(T * c)
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{
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return reinterpret_cast<uint32_t>(&c[1]) - reinterpret_cast<uint32_t>(&c[0]);
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}
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}
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