chusan: added chusanhook, led board fix, config added

credits go to @domeori https://dev.s-ul.net/domeori/segatools/-/tree/mr-imports
2023-07-14 00:58:02 +02:00
parent 90a6f1be7c
commit 2a6a8bf8b2
32 changed files with 2253 additions and 17 deletions
--- a/chusanhook/chuni-dll.c
+++ b/chusanhook/chuni-dll.c
@ -0,0 +1,118 @@
+#include <windows.h>
+
+#include <assert.h>
+#include <stdlib.h>
+
+#include "chusanhook/chuni-dll.h"
+
+#include "util/dll-bind.h"
+#include "util/dprintf.h"
+
+const struct dll_bind_sym chuni_dll_syms[] = {
+    {
+        .sym = "chuni_io_jvs_init",
+        .off = offsetof(struct chuni_dll, jvs_init),
+    }, {
+        .sym = "chuni_io_jvs_poll",
+        .off = offsetof(struct chuni_dll, jvs_poll),
+    }, {
+        .sym = "chuni_io_jvs_read_coin_counter",
+        .off = offsetof(struct chuni_dll, jvs_read_coin_counter),
+    }, {
+        .sym = "chuni_io_slider_init",
+        .off = offsetof(struct chuni_dll, slider_init),
+    }, {
+        .sym = "chuni_io_slider_start",
+        .off = offsetof(struct chuni_dll, slider_start),
+    }, {
+        .sym = "chuni_io_slider_stop",
+        .off = offsetof(struct chuni_dll, slider_stop),
+    }, {
+        .sym = "chuni_io_slider_set_leds",
+        .off = offsetof(struct chuni_dll, slider_set_leds),
+    }
+};
+
+struct chuni_dll chuni_dll;
+
+// Copypasta DLL binding and diagnostic message boilerplate.
+// Not much of this lends itself to being easily factored out. Also there
+// will be a lot of API-specific branching code here eventually as new API
+// versions get defined, so even though these functions all look the same
+// now this won't remain the case forever.
+
+HRESULT chuni_dll_init(const struct chuni_dll_config *cfg, HINSTANCE self)
+{
+    uint16_t (*get_api_version)(void);
+    const struct dll_bind_sym *sym;
+    HINSTANCE owned;
+    HINSTANCE src;
+    HRESULT hr;
+
+    assert(cfg != NULL);
+    assert(self != NULL);
+
+    if (cfg->path[0] != L'\0') {
+        owned = LoadLibraryW(cfg->path);
+
+        if (owned == NULL) {
+            hr = HRESULT_FROM_WIN32(GetLastError());
+            dprintf("Chunithm IO: Failed to load IO DLL: %lx: %S\n",
+                    hr,
+                    cfg->path);
+
+            goto end;
+        }
+
+        dprintf("Chunithm IO: Using custom IO DLL: %S\n", cfg->path);
+        src = owned;
+    } else {
+        owned = NULL;
+        src = self;
+    }
+
+    get_api_version = (void *) GetProcAddress(src, "chuni_io_get_api_version");
+
+    if (get_api_version != NULL) {
+        chuni_dll.api_version = get_api_version();
+    } else {
+        chuni_dll.api_version = 0x0100;
+        dprintf("Custom IO DLL does not expose chuni_io_get_api_version, "
+                "assuming API version 1.0.\n"
+                "Please ask the developer to update their DLL.\n");
+    }
+
+    if (chuni_dll.api_version >= 0x0200) {
+        hr = E_NOTIMPL;
+        dprintf("Chunithm IO: Custom IO DLL implements an unsupported "
+                "API version (%#04x). Please update Segatools.\n",
+                chuni_dll.api_version);
+
+        goto end;
+    }
+
+    sym = chuni_dll_syms;
+    hr = dll_bind(&chuni_dll, src, &sym, _countof(chuni_dll_syms));
+
+    if (FAILED(hr)) {
+        if (src != self) {
+            dprintf("Chunithm IO: Custom IO DLL does not provide function "
+                    "\"%s\". Please contact your IO DLL's developer for "
+                    "further assistance.\n",
+                    sym->sym);
+
+            goto end;
+        } else {
+            dprintf("Internal error: could not reflect \"%s\"\n", sym->sym);
+        }
+    }
+
+    owned = NULL;
+
+end:
+    if (owned != NULL) {
+        FreeLibrary(owned);
+    }
+
+    return hr;
+}
--- a/chusanhook/chuni-dll.h
+++ b/chusanhook/chuni-dll.h
@ -0,0 +1,24 @@
+#pragma once
+
+#include <windows.h>
+
+#include "chuniio/chuniio.h"
+
+struct chuni_dll {
+    uint16_t api_version;
+    HRESULT (*jvs_init)(void);
+    void (*jvs_poll)(uint8_t *opbtn, uint8_t *beams);
+    void (*jvs_read_coin_counter)(uint16_t *total);
+    HRESULT (*slider_init)(void);
+    void (*slider_start)(chuni_io_slider_callback_t callback);
+    void (*slider_stop)(void);
+    void (*slider_set_leds)(const uint8_t *rgb);
+};
+
+struct chuni_dll_config {
+    wchar_t path[MAX_PATH];
+};
+
+extern struct chuni_dll chuni_dll;
+
+HRESULT chuni_dll_init(const struct chuni_dll_config *cfg, HINSTANCE self);
--- a/chusanhook/chusanhook.def
+++ b/chusanhook/chusanhook.def
@ -0,0 +1,22 @@
+LIBRARY chusanhook
+
+EXPORTS
+    Direct3DCreate9
+    aime_io_get_api_version
+    aime_io_init
+    aime_io_led_set_color
+    aime_io_nfc_get_aime_id
+    aime_io_nfc_get_felica_id
+    aime_io_nfc_poll
+    amDllVideoClose @2
+    amDllVideoGetVBiosVersion @4
+    amDllVideoOpen @1
+    amDllVideoSetResolution @3
+    chuni_io_get_api_version
+    chuni_io_jvs_init
+    chuni_io_jvs_poll
+    chuni_io_jvs_read_coin_counter
+    chuni_io_slider_init
+    chuni_io_slider_set_leds
+    chuni_io_slider_start
+    chuni_io_slider_stop
--- a/chusanhook/config.c
+++ b/chusanhook/config.c
@ -0,0 +1,122 @@
+#include <assert.h>
+#include <stddef.h>
+
+#include "board/config.h"
+
+#include "hooklib/config.h"
+#include "hooklib/dvd.h"
+
+#include "gfxhook/config.h"
+
+#include "platform/config.h"
+
+#include "chusanhook/config.h"
+
+// Check windows
+#if _WIN32 || _WIN64
+   #if _WIN64
+     #define ENV64BIT
+  #else
+    #define ENV32BIT
+  #endif
+#endif
+
+// Check GCC
+#if __GNUC__
+  #if __x86_64__ || __ppc64__
+    #define ENV64BIT
+  #else
+    #define ENV32BIT
+  #endif
+#endif
+
+void chuni_dll_config_load(
+        struct chuni_dll_config *cfg,
+        const wchar_t *filename)
+{
+    assert(cfg != NULL);
+    assert(filename != NULL);
+
+    // Workaround for x64/x86 external IO dlls
+    // path32 for 32bit, path64 for 64bit
+    // for else.. is that possible? idk
+
+    #if defined(ENV32BIT)
+        GetPrivateProfileStringW(
+                L"chuniio",
+                L"path32",
+                L"",
+                cfg->path,
+                _countof(cfg->path),
+                filename);
+    #elif defined(ENV64BIT)
+        GetPrivateProfileStringW(
+                L"chuniio",
+                L"path64",
+                L"",
+                cfg->path,
+                _countof(cfg->path),
+                filename);
+    #else
+        #error "Unknown environment"
+    #endif
+    
+}
+
+void slider_config_load(struct slider_config *cfg, const wchar_t *filename)
+{
+    assert(cfg != NULL);
+    assert(filename != NULL);
+
+    cfg->enable = GetPrivateProfileIntW(L"slider", L"enable", 1, filename);
+}
+
+void led1509306_config_load(struct led1509306_config *cfg, const wchar_t *filename)
+{
+    assert(cfg != NULL);
+    assert(filename != NULL);
+
+    wchar_t tmpstr[16];
+    
+    memset(cfg->board_number, ' ', sizeof(cfg->board_number));
+    memset(cfg->chip_number, ' ', sizeof(cfg->chip_number));
+    
+    cfg->enable = GetPrivateProfileIntW(L"ledstrip", L"enable", 1, filename);
+    cfg->cvt_port = GetPrivateProfileIntW(L"ledstrip", L"cvt_port", 0, filename);
+    cfg->fw_ver = GetPrivateProfileIntW(L"ledstrip", L"fw_ver", 0x90, filename);
+    cfg->fw_sum = GetPrivateProfileIntW(L"ledstrip", L"fw_sum", 0xadf7, filename);
+    
+    GetPrivateProfileStringW(L"ledstrip", L"board_number", L"15093-06", tmpstr, _countof(tmpstr), filename);
+    size_t n = wcstombs(cfg->board_number, tmpstr, sizeof(cfg->board_number));
+    for (int i = n; i < sizeof(cfg->board_number); i++)
+    {
+        cfg->board_number[i] = ' ';
+    }
+    
+    GetPrivateProfileStringW(L"ledstrip", L"chip_number", L"6710 ", tmpstr, _countof(tmpstr), filename);
+    n = wcstombs(cfg->chip_number, tmpstr, sizeof(cfg->chip_number));
+    for (int i = n; i < sizeof(cfg->chip_number); i++)
+    {
+        cfg->chip_number[i] = ' ';
+    } 
+}
+
+
+void chusan_hook_config_load(
+        struct chusan_hook_config *cfg,
+        const wchar_t *filename)
+{
+    assert(cfg != NULL);
+    assert(filename != NULL);
+
+    memset(cfg, 0, sizeof(*cfg));
+
+    platform_config_load(&cfg->platform, filename);
+    aime_config_load(&cfg->aime, filename);
+    dvd_config_load(&cfg->dvd, filename);
+    io4_config_load(&cfg->io4, filename);
+    gfx_config_load(&cfg->gfx, filename);
+    chuni_dll_config_load(&cfg->dll, filename);
+    slider_config_load(&cfg->slider, filename);
+    led1509306_config_load(&cfg->led1509306, filename);
+}
--- a/chusanhook/config.h
+++ b/chusanhook/config.h
@ -0,0 +1,34 @@
+#pragma once
+
+#include <stddef.h>
+
+#include "board/config.h"
+
+#include "hooklib/dvd.h"
+
+#include "gfxhook/config.h"
+
+#include "platform/config.h"
+
+#include "chusanhook/chuni-dll.h"
+#include "chusanhook/slider.h"
+#include "chunihook/led1509306.h"
+
+struct chusan_hook_config {
+    struct platform_config platform;
+    struct aime_config aime;
+    struct dvd_config dvd;
+    struct io4_config io4;
+    struct gfx_config gfx;
+    struct chuni_dll_config dll;
+    struct slider_config slider;
+    struct led1509306_config led1509306;
+};
+
+void chuni_dll_config_load(
+        struct chuni_dll_config *cfg,
+        const wchar_t *filename);
+void slider_config_load(struct slider_config *cfg, const wchar_t *filename);
+void chusan_hook_config_load(
+        struct chusan_hook_config *cfg,
+        const wchar_t *filename);
--- a/chusanhook/dllmain.c
+++ b/chusanhook/dllmain.c
@ -0,0 +1,147 @@
+#include <windows.h>
+
+#include <stddef.h>
+#include <stdlib.h>
+
+#include "amex/amex.h"
+
+#include "board/sg-reader.h"
+#include "board/vfd.h"
+
+#include "chusanhook/config.h"
+#include "chusanhook/io4.h"
+#include "chusanhook/slider.h"
+#include "chunihook/led1509306.h"
+
+#include "chuniio/chuniio.h"
+
+#include "hook/process.h"
+
+#include "gfxhook/d3d9.h"
+#include "gfxhook/gfx.h"
+
+#include "hooklib/serial.h"
+#include "hooklib/spike.h"
+
+#include "platform/platform.h"
+
+#include "util/dprintf.h"
+
+static HMODULE chusan_hook_mod;
+static process_entry_t chusan_startup;
+static struct chusan_hook_config chusan_hook_cfg;
+
+static DWORD CALLBACK chusan_pre_startup(void)
+{
+    HMODULE d3dc;
+    HMODULE dbghelp;
+    HRESULT hr;
+
+    dprintf("--- Begin chusan_pre_startup ---\n");
+
+    /* Pin the D3D shader compiler. This makes startup much faster. */
+
+    d3dc = LoadLibraryW(L"D3DCompiler_43.dll");
+
+    if (d3dc != NULL) {
+        dprintf("Pinned shader compiler, hMod=%p\n", d3dc);
+    } else {
+        dprintf("Failed to load shader compiler!\n");
+    }
+
+    /* Pin dbghelp so the path hooks apply to it. */
+
+    dbghelp = LoadLibraryW(L"dbghelp.dll");
+
+    if (dbghelp != NULL) {
+        dprintf("Pinned debug helper library, hMod=%p\n", dbghelp);
+    } else {
+        dprintf("Failed to load debug helper library!\n");
+    }
+
+    /* Config load */
+
+    chusan_hook_config_load(&chusan_hook_cfg, L".\\segatools.ini");
+
+    /* Hook Win32 APIs */
+    
+    dvd_hook_init(&chusan_hook_cfg.dvd, chusan_hook_mod);
+    gfx_hook_init(&chusan_hook_cfg.gfx);
+    gfx_d3d9_hook_init(&chusan_hook_cfg.gfx, chusan_hook_mod);
+    serial_hook_init();
+
+    /* Initialize emulation hooks */
+
+    hr = platform_hook_init(
+        &chusan_hook_cfg.platform,
+        "SDHD",
+        "ACA2",
+        chusan_hook_mod);
+
+    if (FAILED(hr)) {
+        goto fail;
+    }
+
+    hr = chuni_dll_init(&chusan_hook_cfg.dll, chusan_hook_mod);
+
+    if (FAILED(hr)) {
+        goto fail;
+    }
+
+    hr = chusan_io4_hook_init(&chusan_hook_cfg.io4);
+
+    if (FAILED(hr)) {
+        goto fail;
+    }
+
+    hr = slider_hook_init(&chusan_hook_cfg.slider);
+
+    if (FAILED(hr)) {
+        goto fail;
+    }
+
+    hr = led1509306_hook_init(&chusan_hook_cfg.led1509306);
+
+    if (FAILED(hr)) {
+        goto fail;
+    }
+
+
+    hr = sg_reader_hook_init(&chusan_hook_cfg.aime, 4, chusan_hook_mod);
+
+    if (FAILED(hr)) {
+        goto fail;
+    }
+
+    /* Initialize debug helpers */
+
+    spike_hook_init(L".\\segatools.ini");
+
+    dprintf("---  End  chusan_pre_startup ---\n");
+
+    /* Jump to EXE start address */
+
+    return chusan_startup();
+
+fail:
+    ExitProcess(EXIT_FAILURE);
+}
+
+BOOL WINAPI DllMain(HMODULE mod, DWORD cause, void *ctx)
+{
+    HRESULT hr;
+
+    if (cause != DLL_PROCESS_ATTACH) {
+        return TRUE;
+    }
+
+    chusan_hook_mod = mod;
+
+    hr = process_hijack_startup(chusan_pre_startup, &chusan_startup);
+
+    if (!SUCCEEDED(hr)) {
+        dprintf("Failed to hijack process startup: %x\n", (int) hr);
+    }
+
+    return SUCCEEDED(hr);
+}
--- a/chusanhook/io4.c
+++ b/chusanhook/io4.c
@ -0,0 +1,107 @@
+#include <windows.h>
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "board/io4.h"
+
+#include "chusanhook/chuni-dll.h"
+#include "util/dprintf.h"
+
+struct chunithm_jvs_ir_mask {
+    uint16_t p1;
+    uint16_t p2;
+};
+
+// Incorrect IR beam mappings retained for backward compatibility
+static const struct chunithm_jvs_ir_mask chunithm_jvs_ir_masks_v1[] = {
+    { 0, 1 << 13 },
+    { 1 << 13, 0 },
+    { 0, 1 << 12 },
+    { 1 << 12, 0 },
+    { 0, 1 << 11 },
+    { 1 << 11, 0 },
+};
+
+static const struct chunithm_jvs_ir_mask chunithm_jvs_ir_masks[] = {
+    { 1 << 13, 0 },
+    { 0, 1 << 13 },
+    { 1 << 12, 0 },
+    { 0, 1 << 12 },
+    { 1 << 11, 0 },
+    { 0, 1 << 11 },
+};
+
+static HRESULT chusan_io4_poll(void* ctx, struct io4_state* state);
+static uint16_t coins;
+
+static const struct io4_ops chusan_io4_ops = {
+    .poll = chusan_io4_poll,
+};
+
+HRESULT chusan_io4_hook_init(const struct io4_config* cfg)
+{
+    HRESULT hr;
+
+    assert(chuni_dll.jvs_init != NULL);
+
+    dprintf("USB I/O: Starting IO backend\n");
+    hr = chuni_dll.jvs_init();
+
+    if (FAILED(hr)) {
+        dprintf("USB I/O: Backend error, I/O disconnected: %x\n", (int)hr);
+
+        return hr;
+    }
+
+    io4_hook_init(cfg, &chusan_io4_ops, NULL);
+
+    return S_OK;
+}
+
+static HRESULT chusan_io4_poll(void* ctx, struct io4_state* state)
+{
+    const struct chunithm_jvs_ir_mask *masks;
+    uint8_t opbtn;
+    uint8_t beams;
+    size_t i;
+
+    memset(state, 0, sizeof(*state));
+
+    opbtn = 0;
+    beams = 0;
+
+    chuni_dll.jvs_poll(&opbtn, &beams);
+
+    if (chuni_dll.api_version >= 0x0101) {
+        // Use correct mapping
+        masks = chunithm_jvs_ir_masks;
+    } else {
+        // Use backwards-compatible incorrect mapping
+        masks = chunithm_jvs_ir_masks_v1;
+    }
+
+    if (opbtn & CHUNI_IO_OPBTN_TEST) {
+        state->buttons[0] |= IO4_BUTTON_TEST;
+    }
+
+    if (opbtn & CHUNI_IO_OPBTN_SERVICE) {
+        state->buttons[0] |= IO4_BUTTON_SERVICE;
+    }
+
+    if (opbtn & CHUNI_IO_OPBTN_COIN) {
+        coins++;
+    }
+    state->chutes[0] = coins << 8;
+
+    for (i = 0; i < 6; i++) {
+        /* Beam "press" is active-low hence the ~ */
+        if (~beams & (1 << i)) {
+            state->buttons[0] |= masks[i].p1;
+            state->buttons[1] |= masks[i].p2;
+        }
+    }
+
+    return S_OK;
+}
--- a/chusanhook/io4.h
+++ b/chusanhook/io4.h
@ -0,0 +1,5 @@
+#pragma once
+
+#include <windows.h>
+
+HRESULT chusan_io4_hook_init(const struct io4_config *cfg);
--- a/chusanhook/led1509306.c
+++ b/chusanhook/led1509306.c
@ -0,0 +1,389 @@
+#include <windows.h>
+
+#include <assert.h>
+#include <process.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "board/led1509306-cmd.h"
+#include "board/led1509306-frame.h"
+
+#include "chunihook/led1509306.h"
+
+#include "hook/iobuf.h"
+#include "hook/iohook.h"
+
+#include "hooklib/uart.h"
+
+#include "util/dprintf.h"
+#include "util/dump.h"
+
+static HRESULT led1509306_handle_irp(struct irp *irp);
+static HRESULT led1509306_handle_irp_locked(int board, struct irp *irp);
+
+static HRESULT led1509306_req_dispatch(int board, const struct led1509306_req_any *req);
+static HRESULT led1509306_req_reset(int board, const struct led1509306_req_any *req);
+static HRESULT led1509306_req_get_board_info(int board);
+static HRESULT led1509306_req_get_fw_sum(int board);
+static HRESULT led1509306_req_get_protocol_ver(int board);
+static HRESULT led1509306_req_get_board_status(int board);
+static HRESULT led1509306_req_set_led(int board, const struct led1509306_req_any *req);
+static HRESULT led1509306_req_set_disable_response(int board, const struct led1509306_req_any *req);
+static HRESULT led1509306_req_set_timeout(int board, const struct led1509306_req_any *req);
+
+static char led1509306_board_num[8];
+static char led1509306_chip_num[5];
+static uint8_t led1509306_fw_ver;
+static uint16_t led1509306_fw_sum;
+static uint8_t led1509306_board_adr = 2;
+static uint8_t led1509306_host_adr = 1;
+
+#define led1509306_nboards 2
+
+typedef struct {
+    CRITICAL_SECTION lock;
+    struct uart boarduart;
+    uint8_t written_bytes[520];
+    uint8_t readable_bytes[520];
+    bool enable_response;
+} _led1509306_per_board_vars;
+
+_led1509306_per_board_vars led1509306_per_board_vars[led1509306_nboards];
+
+HRESULT led1509306_hook_init(const struct led1509306_config *cfg)
+{
+    assert(cfg != NULL);
+
+    if (!cfg->enable) {
+        return S_FALSE;
+    }
+    
+    memcpy(led1509306_board_num, cfg->board_number, sizeof(led1509306_board_num));
+    memcpy(led1509306_chip_num, cfg->chip_number, sizeof(led1509306_chip_num));
+    led1509306_fw_ver = cfg->fw_ver;
+    led1509306_fw_sum = cfg->fw_sum;
+    
+    int com_ports[2];
+
+    if (!cfg->cvt_port) {
+        // SP mode: COM20, COM21
+        com_ports[0] = 20;
+        com_ports[1] = 21;
+    } else {
+        // CVT mode: COM3, COM23
+        com_ports[0] = 2;
+        com_ports[1] = 3;
+    }
+
+    for (int i = 0; i < led1509306_nboards; i++)
+    {
+        _led1509306_per_board_vars *v = &led1509306_per_board_vars[i];
+        
+        InitializeCriticalSection(&v->lock);
+
+        uart_init(&v->boarduart, com_ports[i]);
+        v->boarduart.written.bytes = v->written_bytes;
+        v->boarduart.written.nbytes = sizeof(v->written_bytes);
+        v->boarduart.readable.bytes = v->readable_bytes;
+        v->boarduart.readable.nbytes = sizeof(v->readable_bytes);
+        
+        v->enable_response = true;
+    }
+
+    return iohook_push_handler(led1509306_handle_irp);
+}
+
+static HRESULT led1509306_handle_irp(struct irp *irp)
+{
+    HRESULT hr;
+
+    assert(irp != NULL);
+    
+    for (int i = 0; i < led1509306_nboards; i++)
+    {
+        _led1509306_per_board_vars *v = &led1509306_per_board_vars[i];
+        struct uart *boarduart = &v->boarduart;
+        
+        if (uart_match_irp(boarduart, irp))
+        {
+            CRITICAL_SECTION lock = v->lock;
+            
+            EnterCriticalSection(&lock);
+            hr = led1509306_handle_irp_locked(i, irp);
+            LeaveCriticalSection(&lock);
+
+            return hr;
+        }
+    }
+    
+    return iohook_invoke_next(irp);
+}
+
+static HRESULT led1509306_handle_irp_locked(int board, struct irp *irp)
+{
+    struct led1509306_req_any req;
+    struct iobuf req_iobuf;
+    HRESULT hr;
+    
+    struct uart *boarduart = &led1509306_per_board_vars[board].boarduart;
+
+    hr = uart_handle_irp(boarduart, irp);
+
+    if (FAILED(hr) || irp->op != IRP_OP_WRITE) {
+        return hr;
+    }
+
+    for (;;) {
+#if 0
+        dprintf("TX Buffer:\n");
+        dump_iobuf(&boarduart->written);
+#endif
+
+        req_iobuf.bytes = (byte*)&req;
+        req_iobuf.nbytes = sizeof(req.hdr) + sizeof(req.cmd) + sizeof(req.payload);
+        req_iobuf.pos = 0;
+
+        hr = led1509306_frame_decode(&req_iobuf, &boarduart->written);
+
+        if (hr != S_OK) {
+            if (FAILED(hr)) {
+                dprintf("Chunithm LED Strip: Deframe error: %x\n", (int) hr);
+            }
+
+            return hr;
+        }
+
+#if 0
+        dprintf("Deframe Buffer:\n");
+        dump_iobuf(&req_iobuf);
+#endif
+
+        hr = led1509306_req_dispatch(board, &req);
+
+        if (FAILED(hr)) {
+            dprintf("Chunithm LED Strip: Processing error: %x\n", (int) hr);
+        }
+    }
+}
+
+static HRESULT led1509306_req_dispatch(int board, const struct led1509306_req_any *req)
+{
+    switch (req->cmd) {
+    case LED_15093_06_CMD_RESET:
+        return led1509306_req_reset(board, req);
+
+    case LED_15093_06_CMD_BOARD_INFO:
+        return led1509306_req_get_board_info(board);
+    
+    case LED_15093_06_CMD_FW_SUM:
+        return led1509306_req_get_fw_sum(board);
+    
+    case LED_15093_06_CMD_PROTOCOL_VER:
+        return led1509306_req_get_protocol_ver(board);
+
+    case LED_15093_06_CMD_BOARD_STATUS:
+        return led1509306_req_get_board_status(board);
+
+    case LED_15093_06_CMD_SET_LED:
+        return led1509306_req_set_led(board, req);
+
+    case LED_15093_06_CMD_SET_DISABLE_RESPONSE:
+        return led1509306_req_set_disable_response(board, req);
+
+    case LED_15093_06_CMD_SET_TIMEOUT:
+        return led1509306_req_set_timeout(board, req);
+
+    default:
+        dprintf("Chunithm LED Strip: Unhandled command %02x\n", req->cmd);
+
+        return S_OK;
+    }
+}
+
+static HRESULT led1509306_req_reset(int board, const struct led1509306_req_any *req)
+{
+    dprintf("Chunithm LED Strip: Reset (board %u, type %02x)\n", board, req->payload[0]);
+    
+    if (req->payload[0] != 0xd9)
+        dprintf("Chunithm LED Strip: Warning -- Unknown reset type %02x\n", req->payload[0]);
+    
+    led1509306_per_board_vars[board].enable_response = true;
+
+    struct led1509306_resp_any resp;
+    
+    memset(&resp, 0, sizeof(resp));
+    resp.hdr.sync = LED_15093_06_FRAME_SYNC;
+    resp.hdr.dest_adr = led1509306_host_adr;
+    resp.hdr.src_adr = led1509306_board_adr;
+    resp.hdr.nbytes = 3;
+    
+    resp.status = 1;
+    resp.cmd = LED_15093_06_CMD_RESET;
+    resp.report = 1;
+
+    return led1509306_frame_encode(&led1509306_per_board_vars[board].boarduart.readable, &resp, sizeof(resp.hdr) + resp.hdr.nbytes);
+}
+
+static HRESULT led1509306_req_get_board_info(int board)
+{
+    dprintf("Chunithm LED Strip: Get board info (board %u)\n", board);
+    
+    struct led1509306_resp_board_info resp;
+
+    memset(&resp, 0, sizeof(resp));
+    resp.hdr.sync = LED_15093_06_FRAME_SYNC;
+    resp.hdr.dest_adr = led1509306_host_adr;
+    resp.hdr.src_adr = led1509306_board_adr;
+    resp.hdr.nbytes = sizeof(resp.data) + 3;
+    
+    resp.status = 1;
+    resp.cmd = LED_15093_06_CMD_BOARD_INFO;
+    resp.report = 1;
+
+    memcpy(resp.data.board_num, led1509306_board_num, sizeof(resp.data.board_num));
+    resp.data._0a = 0x0a;
+    memcpy(resp.data.chip_num, led1509306_chip_num, sizeof(resp.data.chip_num));
+    resp.data._ff = 0xff;
+    resp.data.fw_ver = led1509306_fw_ver;
+
+    return led1509306_frame_encode(&led1509306_per_board_vars[board].boarduart.readable, &resp, sizeof(resp.hdr) + resp.hdr.nbytes);
+}
+
+static HRESULT led1509306_req_get_fw_sum(int board)
+{
+    dprintf("Chunithm LED Strip: Get firmware checksum (board %u)\n", board);
+    
+    struct led1509306_resp_any resp;
+    
+    memset(&resp, 0, sizeof(resp));
+    resp.hdr.sync = LED_15093_06_FRAME_SYNC;
+    resp.hdr.dest_adr = led1509306_host_adr;
+    resp.hdr.src_adr = led1509306_board_adr;
+    resp.hdr.nbytes = 2 + 3;
+    
+    resp.status = 1;
+    resp.cmd = LED_15093_06_CMD_FW_SUM;
+    resp.report = 1;
+    
+    resp.data[0] = (led1509306_fw_sum >> 8) & 0xff;
+    resp.data[1] = led1509306_fw_sum & 0xff;
+    
+    return led1509306_frame_encode(&led1509306_per_board_vars[board].boarduart.readable, &resp, sizeof(resp.hdr) + resp.hdr.nbytes);
+}
+
+static HRESULT led1509306_req_get_protocol_ver(int board)
+{
+    dprintf("Chunithm LED Strip: Get protocol version (board %u)\n", board);
+    
+    struct led1509306_resp_any resp;
+    
+    memset(&resp, 0, sizeof(resp));
+    resp.hdr.sync = LED_15093_06_FRAME_SYNC;
+    resp.hdr.dest_adr = led1509306_host_adr;
+    resp.hdr.src_adr = led1509306_board_adr;
+    resp.hdr.nbytes = 3 + 3;
+    
+    resp.status = 1;
+    resp.cmd = LED_15093_06_CMD_PROTOCOL_VER;
+    resp.report = 1;
+    
+    resp.data[0] = 1;
+    resp.data[1] = 1;
+    resp.data[2] = 4;
+    
+    return led1509306_frame_encode(&led1509306_per_board_vars[board].boarduart.readable, &resp, sizeof(resp.hdr) + resp.hdr.nbytes);
+}
+
+static HRESULT led1509306_req_get_board_status(int board)
+{
+    dprintf("Chunithm LED Strip: Get board status (board %u)\n", board);
+    
+    struct led1509306_resp_any resp;
+    
+    memset(&resp, 0, sizeof(resp));
+    resp.hdr.sync = LED_15093_06_FRAME_SYNC;
+    resp.hdr.dest_adr = led1509306_host_adr;
+    resp.hdr.src_adr = led1509306_board_adr;
+    resp.hdr.nbytes = 4 + 3;
+    
+    resp.status = 1;
+    resp.cmd = LED_15093_06_CMD_BOARD_STATUS;
+    resp.report = 1;
+    
+    resp.data[0] = 0;
+    resp.data[1] = 0;
+    resp.data[2] = 0;
+    resp.data[3] = 0;
+    
+    return led1509306_frame_encode(&led1509306_per_board_vars[board].boarduart.readable, &resp, sizeof(resp.hdr) + resp.hdr.nbytes);
+}
+
+static HRESULT led1509306_req_set_led(int board, const struct led1509306_req_any *req)
+{
+    // dprintf("Chunithm LED Strip: Set LED (board %u)\n", board);
+
+    if (!led1509306_per_board_vars[board].enable_response)
+        return S_OK;
+    
+    struct led1509306_resp_any resp;
+    
+    memset(&resp, 0, sizeof(resp));
+    resp.hdr.sync = LED_15093_06_FRAME_SYNC;
+    resp.hdr.dest_adr = led1509306_host_adr;
+    resp.hdr.src_adr = led1509306_board_adr;
+    resp.hdr.nbytes = 3;
+    
+    resp.status = 1;
+    resp.cmd = LED_15093_06_CMD_SET_LED;
+    resp.report = 1;
+    
+    return led1509306_frame_encode(&led1509306_per_board_vars[board].boarduart.readable, &resp, sizeof(resp.hdr) + resp.hdr.nbytes);
+}
+
+static HRESULT led1509306_req_set_disable_response(int board, const struct led1509306_req_any *req)
+{
+    dprintf("Chunithm LED Strip: Disable LED responses (board %u)\n", board);
+    
+    led1509306_per_board_vars[board].enable_response = !req->payload[0];
+
+    struct led1509306_resp_any resp;
+    
+    memset(&resp, 0, sizeof(resp));
+    resp.hdr.sync = LED_15093_06_FRAME_SYNC;
+    resp.hdr.dest_adr = led1509306_host_adr;
+    resp.hdr.src_adr = led1509306_board_adr;
+    resp.hdr.nbytes = 1 + 3;
+    
+    resp.status = 1;
+    resp.cmd = LED_15093_06_CMD_SET_DISABLE_RESPONSE;
+    resp.report = 1;
+    
+    resp.data[0] = req->payload[0];
+    
+    return led1509306_frame_encode(&led1509306_per_board_vars[board].boarduart.readable, &resp, sizeof(resp.hdr) + resp.hdr.nbytes);
+}
+
+static HRESULT led1509306_req_set_timeout(int board, const struct led1509306_req_any *req)
+{
+    dprintf("Chunithm LED Strip: Set timeout (board %u)\n", board);
+    
+    // not actually implemented, but respond correctly anyway
+    
+    struct led1509306_resp_any resp;
+    
+    memset(&resp, 0, sizeof(resp));
+    resp.hdr.sync = LED_15093_06_FRAME_SYNC;
+    resp.hdr.dest_adr = led1509306_host_adr;
+    resp.hdr.src_adr = led1509306_board_adr;
+    resp.hdr.nbytes = 2 + 3;
+    
+    resp.status = 1;
+    resp.cmd = LED_15093_06_CMD_SET_TIMEOUT;
+    resp.report = 1;
+    
+    resp.data[0] = req->payload[0];
+    resp.data[1] = req->payload[1];
+    
+    return led1509306_frame_encode(&led1509306_per_board_vars[board].boarduart.readable, &resp, sizeof(resp.hdr) + resp.hdr.nbytes);
+}
--- a/chusanhook/led1509306.h
+++ b/chusanhook/led1509306.h
@ -0,0 +1,15 @@
+#pragma once
+
+#include <windows.h>
+
+#include <stdbool.h>
+
+struct led1509306_config {
+    bool enable;
+    char board_number[8];
+    char chip_number[5];
+    uint8_t fw_ver;
+    uint16_t fw_sum;
+};
+
+HRESULT led1509306_hook_init(const struct led1509306_config *cfg);
--- a/chusanhook/meson.build
+++ b/chusanhook/meson.build
@ -0,0 +1,34 @@
+shared_library(
+    'chusanhook',
+    name_prefix : '',
+    include_directories : inc,
+    implicit_include_directories : false,
+    vs_module_defs : 'chusanhook.def',
+    c_pch : '../precompiled.h',
+    dependencies : [
+        capnhook.get_variable('hook_dep'),
+        capnhook.get_variable('hooklib_dep'),
+    ],
+    link_with : [
+        aimeio_lib,
+        board_lib,
+        chuniio_lib,
+        gfxhook_lib,
+        hooklib_lib,
+        platform_lib,
+        util_lib,
+    ],
+    sources : [
+        'chuni-dll.c',
+        'chuni-dll.h',
+        'config.c',
+        'config.h',
+        'dllmain.c',
+        'io4.c',
+        'io4.h',
+        'slider.c',
+        'slider.h',
+        'led1509306.c',
+        'led1509306.h',
+    ],
+)
--- a/chusanhook/slider.c
+++ b/chusanhook/slider.c
@ -0,0 +1,249 @@
+#include <windows.h>
+
+#include <assert.h>
+#include <process.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "board/slider-cmd.h"
+#include "board/slider-frame.h"
+
+#include "chusanhook/chuni-dll.h"
+#include "chusanhook/slider.h"
+
+#include "hook/iobuf.h"
+#include "hook/iohook.h"
+
+#include "hooklib/uart.h"
+
+#include "util/dprintf.h"
+#include "util/dump.h"
+
+static HRESULT slider_handle_irp(struct irp *irp);
+static HRESULT slider_handle_irp_locked(struct irp *irp);
+
+static HRESULT slider_req_dispatch(const union slider_req_any *req);
+static HRESULT slider_req_reset(void);
+static HRESULT slider_req_get_board_info(void);
+static HRESULT slider_req_auto_scan_start(void);
+static HRESULT slider_req_auto_scan_stop(void);
+static HRESULT slider_req_set_led(const struct slider_req_set_led *req);
+
+static void slider_res_auto_scan(const uint8_t *state);
+
+static CRITICAL_SECTION slider_lock;
+static struct uart slider_uart;
+static uint8_t slider_written_bytes[520];
+static uint8_t slider_readable_bytes[520];
+
+HRESULT slider_hook_init(const struct slider_config *cfg)
+{
+    assert(cfg != NULL);
+    assert(chuni_dll.slider_init != NULL);
+
+    if (!cfg->enable) {
+        return S_FALSE;
+    }
+
+    InitializeCriticalSection(&slider_lock);
+
+    uart_init(&slider_uart, 1);
+    slider_uart.written.bytes = slider_written_bytes;
+    slider_uart.written.nbytes = sizeof(slider_written_bytes);
+    slider_uart.readable.bytes = slider_readable_bytes;
+    slider_uart.readable.nbytes = sizeof(slider_readable_bytes);
+
+    return iohook_push_handler(slider_handle_irp);
+}
+
+static HRESULT slider_handle_irp(struct irp *irp)
+{
+    HRESULT hr;
+
+    assert(irp != NULL);
+
+    if (!uart_match_irp(&slider_uart, irp)) {
+        return iohook_invoke_next(irp);
+    }
+
+    EnterCriticalSection(&slider_lock);
+    hr = slider_handle_irp_locked(irp);
+    LeaveCriticalSection(&slider_lock);
+
+    return hr;
+}
+
+static HRESULT slider_handle_irp_locked(struct irp *irp)
+{
+    union slider_req_any req;
+    struct iobuf req_iobuf;
+    HRESULT hr;
+
+    if (irp->op == IRP_OP_OPEN) {
+        dprintf("Chunithm slider: Starting backend\n");
+        hr = chuni_dll.slider_init();
+
+        if (FAILED(hr)) {
+            dprintf("Chunithm slider: Backend error: %x\n", (int) hr);
+
+            return hr;
+        }
+    }
+
+    hr = uart_handle_irp(&slider_uart, irp);
+
+    if (FAILED(hr) || irp->op != IRP_OP_WRITE) {
+        return hr;
+    }
+
+    for (;;) {
+#if 0
+        dprintf("TX Buffer:\n");
+        dump_iobuf(&slider_uart.written);
+#endif
+
+        req_iobuf.bytes = req.bytes;
+        req_iobuf.nbytes = sizeof(req.bytes);
+        req_iobuf.pos = 0;
+
+        hr = slider_frame_decode(&req_iobuf, &slider_uart.written);
+
+        if (hr != S_OK) {
+            if (FAILED(hr)) {
+                dprintf("Chunithm slider: Deframe error: %x\n", (int) hr);
+            }
+
+            return hr;
+        }
+
+#if 0
+        dprintf("Deframe Buffer:\n");
+        dump_iobuf(&req_iobuf);
+#endif
+
+        hr = slider_req_dispatch(&req);
+
+        if (FAILED(hr)) {
+            dprintf("Chunithm slider: Processing error: %x\n", (int) hr);
+        }
+    }
+}
+
+static HRESULT slider_req_dispatch(const union slider_req_any *req)
+{
+    switch (req->hdr.cmd) {
+    case SLIDER_CMD_RESET:
+        return slider_req_reset();
+
+    case SLIDER_CMD_GET_BOARD_INFO:
+        return slider_req_get_board_info();
+
+    case SLIDER_CMD_SET_LED:
+        return slider_req_set_led(&req->set_led);
+
+    case SLIDER_CMD_AUTO_SCAN_START:
+        return slider_req_auto_scan_start();
+
+    case SLIDER_CMD_AUTO_SCAN_STOP:
+        return slider_req_auto_scan_stop();
+
+    default:
+        dprintf("Unhandled command %02x\n", req->hdr.cmd);
+
+        return S_OK;
+    }
+}
+
+static HRESULT slider_req_reset(void)
+{
+    struct slider_hdr resp;
+
+    dprintf("Chunithm slider: Reset\n");
+
+    resp.sync = 0xFF;
+    resp.cmd = SLIDER_CMD_RESET;
+    resp.nbytes = 0;
+
+    return slider_frame_encode(&slider_uart.readable, &resp, sizeof(resp));
+}
+
+static HRESULT slider_req_get_board_info(void)
+{
+    struct slider_resp_get_board_info resp;
+
+    dprintf("Chunithm slider: Get firmware version\n");
+
+    memset(&resp, 0, sizeof(resp));
+    resp.hdr.sync = SLIDER_FRAME_SYNC;
+    resp.hdr.cmd = SLIDER_CMD_GET_BOARD_INFO;
+    resp.hdr.nbytes = sizeof(resp.version);
+
+    strcpy_s(
+            resp.version,
+            sizeof(resp.version),
+            "15330   \xA0" "06712\xFF" "\x90");
+
+    return slider_frame_encode(&slider_uart.readable, &resp, sizeof(resp));
+}
+
+static HRESULT slider_req_auto_scan_start(void)
+{
+    assert(chuni_dll.slider_start != NULL);
+
+    dprintf("Chunithm slider: Start slider notifications\n");
+    chuni_dll.slider_start(slider_res_auto_scan);
+
+    /* This message is not acknowledged */
+
+    return S_OK;
+}
+
+static HRESULT slider_req_auto_scan_stop(void)
+{
+    struct slider_hdr resp;
+
+    assert(chuni_dll.slider_stop != NULL);
+
+    dprintf("Chunithm slider: Stop slider notifications\n");
+
+    /* IO DLL worker thread might attempt to invoke the callback (which needs
+       to take slider_lock, which we are currently holding) before noticing that
+       it needs to shut down. Unlock here so that we don't deadlock in that
+       situation. */
+
+    LeaveCriticalSection(&slider_lock);
+    chuni_dll.slider_stop();
+    EnterCriticalSection(&slider_lock);
+
+    resp.sync = SLIDER_FRAME_SYNC;
+    resp.cmd = SLIDER_CMD_AUTO_SCAN_STOP;
+    resp.nbytes = 0;
+
+    return slider_frame_encode(&slider_uart.readable, &resp, sizeof(resp));
+}
+
+static HRESULT slider_req_set_led(const struct slider_req_set_led *req)
+{
+    assert(chuni_dll.slider_set_leds != NULL);
+
+    chuni_dll.slider_set_leds(req->payload.rgb);
+
+    /* This message is not acknowledged */
+
+    return S_OK;
+}
+
+static void slider_res_auto_scan(const uint8_t *state)
+{
+    struct slider_resp_auto_scan resp;
+
+    resp.hdr.sync = SLIDER_FRAME_SYNC;
+    resp.hdr.cmd = SLIDER_CMD_AUTO_SCAN;
+    resp.hdr.nbytes = sizeof(resp.pressure);
+    memcpy(resp.pressure, state, sizeof(resp.pressure));
+
+    EnterCriticalSection(&slider_lock);
+    slider_frame_encode(&slider_uart.readable, &resp, sizeof(resp));
+    LeaveCriticalSection(&slider_lock);
+}
--- a/chusanhook/slider.h
+++ b/chusanhook/slider.h
@ -0,0 +1,11 @@
+#pragma once
+
+#include <windows.h>
+
+#include <stdbool.h>
+
+struct slider_config {
+    bool enable;
+};
+
+HRESULT slider_hook_init(const struct slider_config *cfg);