Zack Buhman
dfc14d8658
Necessarily, this means that dma_start must now know what the size of the response is, so that it can issue the appropriate number of ocbp instructions. This also cleans up the inconsistent _command_buf and _recieve_buf declarations.
74 lines
2.2 KiB
C++
74 lines
2.2 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 command_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 (command_response<uint8_t[0]>)) == align_32byte((sizeof (command_response<uint8_t[0]>))));
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void init_host_command(uint32_t * buf, uint32_t * receive_buf,
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uint32_t destination_port,
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uint8_t destination_ap, uint8_t command_code, uint8_t data_size,
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bool end_flag);
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uint32_t init_device_request(uint32_t * buf, uint32_t * receive_buf,
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uint32_t destination_port,
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uint8_t destination_ap);
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uint32_t init_get_condition(uint32_t * buf, uint32_t * receive_buf,
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uint32_t destination_port,
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uint8_t destination_ap,
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uint32_t function_type);
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uint32_t init_block_write(uint32_t * buf, uint32_t * receive_buf,
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uint32_t destination_port,
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uint8_t destination_ap,
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uint32_t * data,
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uint32_t data_size);
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void dma_start(const uint32_t * command_buf,
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const uint32_t command_size,
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const uint32_t * receive_buf,
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const uint32_t receive_size
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);
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void dma_start(const uint32_t * command_buf,
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const uint32_t command_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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