Initial commit for GitHub migration based on spice2x-25-03-03

2026-08-02 06:40:42 -07:00 · 2025-03-10 19:16:49 -07:00
parent 94af8d32c9
commit ed8c72852f
1008 changed files with 296815 additions and 0 deletions
@@ -0,0 +1,103 @@
+#pragma once
+
+#include <string>
+
+#include "util/circular_buffer.h"
+
+// convert big-endian to little-endian
+#define acio_u16 _byteswap_ushort
+#define acio_u32 _byteswap_ulong
+
+namespace acioemu {
+
+    constexpr uint8_t ACIO_SOF = 0xAA;
+    constexpr uint8_t ACIO_ESCAPE = 0xFF;
+    constexpr uint8_t ACIO_BROADCAST = 0x70;
+    constexpr uint8_t ACIO_RESPONSE_FLAG = 0x80;
+
+    // general command codes
+    enum acio_cmd_codes {
+        ACIO_CMD_ASSIGN_ADDRS = 0x0001,
+        ACIO_CMD_GET_VERSION  = 0x0002,
+        ACIO_CMD_STARTUP      = 0x0003,
+        ACIO_CMD_KEEPALIVE    = 0x0080,
+        ACIO_CMD_CLEAR        = 0x0100,
+    };
+
+    // message structs
+#pragma pack(push, 1)
+    struct VersionData {
+        uint32_t type;
+        uint8_t flag;
+        uint8_t ver_major;
+        uint8_t ver_minor;
+        uint8_t ver_rev;
+        char code[4];
+        char date[16];
+        char time[16];
+    };
+
+    struct MessageData {
+        uint8_t addr;
+
+        union {
+            struct {
+                uint16_t code;
+                uint8_t pid;
+                uint8_t data_size;
+
+                union {
+                    uint8_t raw[0xFF];
+                    uint8_t status;
+                    VersionData data_version;
+                };
+            } cmd;
+
+            struct {
+                uint8_t data_size;
+                uint8_t raw[0xFF];
+            } broadcast;
+        };
+    };
+#pragma pack(pop)
+
+    // message sizes
+    constexpr size_t MSG_HEADER_SIZE = 5;
+    constexpr size_t MSG_VERSION_SIZE = sizeof(VersionData);
+
+    class ACIODeviceEmu {
+    public:
+
+        // attributes
+        uint8_t node_count = 0;
+
+        /*
+         * Helper functions for getting/setting the message contents
+         */
+        static void set_header(MessageData* data, uint8_t addr, uint16_t code, uint8_t pid, uint8_t data_size);
+        static void set_version(MessageData* data, uint32_t type, uint8_t flag,
+                         uint8_t ver_major, uint8_t ver_minor, uint8_t ver_rev,
+                         std::string code);
+
+        /*
+         * This function creates a basic message with optional parameter data.
+         * If data is set to null, the parameter data will be initialized with 0x00
+         */
+        static MessageData* create_msg(uint8_t addr, uint16_t cmd, uint8_t pid,
+                size_t data_size, uint8_t *data = nullptr);
+        static MessageData* create_msg(MessageData* msg_in, size_t data_size, uint8_t *data = nullptr);
+
+        /*
+         * Helper functions for generating messages
+         */
+        static MessageData* create_msg_status(uint8_t addr, uint16_t code, uint8_t pid, uint8_t status);
+        static MessageData* create_msg_status(MessageData* msg_in, uint8_t status);
+
+        virtual ~ACIODeviceEmu() = default;
+
+        virtual bool is_applicable(uint8_t node_offset, uint8_t node);
+        virtual bool parse_msg(MessageData *msg_in, circular_buffer<uint8_t> *response_buffer) = 0;
+        static void write_msg(const uint8_t *data, size_t size, circular_buffer<uint8_t> *response_buffer);
+        static void write_msg(MessageData *msg, circular_buffer<uint8_t> *response_buffer);
+    };
+}