119 lines
3.7 KiB
C++
119 lines
3.7 KiB
C++
#include <bit>
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#include "align.hpp"
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#include "holly/video_output.hpp"
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#include "holly/core_bits.hpp"
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#include "holly/holly.hpp"
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#include "maple/maple.hpp"
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#include "maple/maple_impl.hpp"
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#include "maple/maple_bus_bits.hpp"
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#include "maple/maple_bus_commands.hpp"
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#include "maple/maple_bus_ft0.hpp"
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#include "sh7091/serial.hpp"
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uint32_t _command_buf[(1024 + 32) / 4];
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uint32_t _receive_buf[(1024 + 32) / 4];
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static uint32_t * command_buf;
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static uint32_t * receive_buf;
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void do_get_condition(uint32_t port)
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{
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uint32_t destination_port;
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uint32_t destination_ap;
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switch (port) {
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case 0:
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destination_port = host_instruction::port_select::a;
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destination_ap = ap::de::device | ap::port_select::a;
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break;
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case 1:
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destination_port = host_instruction::port_select::b;
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destination_ap = ap::de::device | ap::port_select::b;
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break;
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case 2:
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destination_port = host_instruction::port_select::c;
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destination_ap = ap::de::device | ap::port_select::c;
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break;
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case 3:
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destination_port = host_instruction::port_select::d;
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destination_ap = ap::de::device | ap::port_select::d;
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break;
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default:
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return;
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}
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const uint32_t command_size = maple::init_get_condition(command_buf, receive_buf,
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destination_port,
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destination_ap,
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std::byteswap(function_type::controller));
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using response_type = data_transfer<ft0::data_transfer::data_format>;
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using command_response_type = struct maple::command_response<response_type::data_fields>;
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auto host_response = reinterpret_cast<command_response_type *>(receive_buf);
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maple::dma_start(command_buf, command_size,
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receive_buf, maple::sizeof_command(host_response));
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auto& bus_data = host_response->bus_data;
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if (bus_data.command_code != response_type::command_code) {
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return;
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}
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auto& data_fields = bus_data.data_fields;
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if ((data_fields.function_type & std::byteswap(function_type::controller)) == 0) {
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return;
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}
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bool a = ft0::data_transfer::digital_button::a(data_fields.data.digital_button);
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if (a == 0) {
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serial::string("port ");
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serial::integer<uint8_t>(port);
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serial::string(" `a` press ");
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serial::integer<uint8_t>(a);
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}
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}
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void do_device_request()
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{
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using command_type = device_request;
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using response_type = device_status;
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const uint32_t command_size = maple::init_host_command_all_ports<command_type, response_type>(command_buf, receive_buf);
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using host_response_type = struct maple::command_response<response_type::data_fields>;
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auto host_response = reinterpret_cast<host_response_type *>(receive_buf);
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maple::dma_start(command_buf, command_size,
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receive_buf, maple::sizeof_command(host_response));
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for (uint8_t port = 0; port < 4; port++) {
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auto& bus_data = host_response[port].bus_data;
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auto& data_fields = host_response[port].bus_data.data_fields;
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if (bus_data.command_code != device_status::command_code) {
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// the controller is disconnected
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} else {
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if ((data_fields.device_id.ft & std::byteswap(function_type::controller)) != 0) {
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//serial::string("is controller: ");
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//serial::integer<uint8_t>(port);
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do_get_condition(port);
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}
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}
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}
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}
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void main()
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{
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command_buf = align_32byte(_command_buf);
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command_buf = reinterpret_cast<uint32_t *>(reinterpret_cast<uint32_t>(command_buf) | 0xa000'0000);
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receive_buf = align_32byte(_receive_buf);
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// flycast needs this in HLE mode, or else it won't start the vcount
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// counter.
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video_output::set_mode_vga();
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while (1) {
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while (!spg_status::vsync(holly.SPG_STATUS));
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while (spg_status::vsync(holly.SPG_STATUS));
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do_device_request();
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};
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}
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