IQ.Pilot Release Commit @ f2a861c

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/.gitignore

@@ -0,0 +1,13 @@
+xcuserdata/
+
+**/*.xcodeproj/project.xcworkspace/*
+!**/*.xcodeproj/project.xcworkspace/xcshareddata
+
+**/*.xcodeproj/project.xcworkspace/xcshareddata/*
+!**/*.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings
+
+**/*.playground/playground.xcworkspace/*
+!**/*.playground/playground.xcworkspace/xcshareddata
+
+**/*.playground/playground.xcworkspace/xcshareddata/*
+!**/*.playground/playground.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/Shared/Assets.xcassets/AccentColor.colorset/Contents.json

@@ -0,0 +1,11 @@
+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/Shared/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,148 @@
+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "83.5x83.5"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "scale" : "1x",
+      "size" : "1024x1024"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "16x16"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "16x16"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "32x32"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "32x32"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "128x128"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "128x128"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "256x256"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "256x256"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "1x",
+      "size" : "512x512"
+    },
+    {
+      "idiom" : "mac",
+      "scale" : "2x",
+      "size" : "512x512"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/Shared/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/Shared/TinyGPU-Bridging-Header.h

@@ -0,0 +1 @@
+int run_server(const char *sock_path);

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/Shared/TinyGPUApp.swift

@@ -0,0 +1,48 @@
+import SwiftUI
+
+private let dextID = "org.tinygrad.tinygpu.driver2"
+
+@main
+struct TinyGPUApp: App {
+  private static var runner: TinyGPUCLIRunner?  // prevent dealloc before callback
+  @State private var text = ""
+  @NSApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
+
+  init() {
+    guard CommandLine.arguments.count > 1 else { return }
+    Self.runner = TinyGPUCLIRunner(dextID)
+    Self.runner?.run(args: CommandLine.arguments) { exit($0.rawValue) }
+    dispatchMain()
+  }
+
+  var body: some Scene {
+    WindowGroup("TinyGPU") {
+      ScrollView {
+        Text(text).font(.custom("Menlo", size: 11)).frame(maxWidth: .infinity, alignment: .leading).padding(8)
+      }
+      .frame(width: 500, height: 300).padding()
+      .onAppear { setup() }
+    }
+    .commands { CommandGroup(replacing: .newItem) {} }
+  }
+
+  func setup() {
+    let bundlePath = Bundle.main.bundlePath
+    guard bundlePath.hasPrefix("/Applications/") else {
+      var error: NSDictionary?
+      NSAppleScript(source: "do shell script \"mv '\(bundlePath)' '/Applications/'\" with administrator privileges")?.executeAndReturnError(&error)
+      text = error == nil ? "Moved! Please reopen from /Applications/\n" : "Move TinyGPU to /Applications first.\n"
+      return
+    }
+    let state = TinyGPUCLIRunner.queryDextState(dextID)
+    if state == .unloaded || state == .activating {
+      Self.runner = TinyGPUCLIRunner(dextID)
+      Self.runner?.run(args: ["", "install"]) { _ in }
+    }
+    text = "TinyGPU - Remote PCI Device Server\n\n" + TinyGPUCLIRunner.statusText(state)
+  }
+}
+
+class AppDelegate: NSObject, NSApplicationDelegate {
+  func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool { true }
+}

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/Shared/TinyGPUCLIRunner.swift

@@ -0,0 +1,122 @@
+import Foundation
+import SystemExtensions
+
+enum TinyGPUCLIExit: Int32 { case ok = 0, usage = 2, failed = 3, needsApproval = 4 }
+enum DextState { case unloaded, activating, needsApproval, activated }
+
+final class TinyGPUCLIRunner: NSObject, OSSystemExtensionRequestDelegate {
+  private let dextID: String
+  private var done: ((TinyGPUCLIExit) -> Void)?
+  private var isInstall = true
+
+  init(_ dextID: String) { self.dextID = dextID }
+
+  static func queryDextState(_ bundleID: String) -> DextState {
+    let p = Process()
+    p.executableURL = URL(fileURLWithPath: "/usr/bin/systemextensionsctl")
+    p.arguments = ["list"]
+    let pipe = Pipe()
+    p.standardOutput = pipe
+    p.standardError = Pipe()
+    guard (try? p.run()) != nil else { return .unloaded }
+    p.waitUntilExit()
+
+    guard let output = String(data: pipe.fileHandleForReading.readDataToEndOfFile(), encoding: .utf8),
+          let line = output.split(separator: "\n").first(where: { $0.contains(bundleID) }) else { return .unloaded }
+    if line.contains("[activated enabled]") { return .activated }
+    if line.contains("[activated waiting for user]") { return .needsApproval }
+    return line.contains("terminated waiting to uninstall") ? .unloaded : .activating
+  }
+
+  private static let approvalHelp = """
+    Please go to System Settings > Privacy & Security and allow the extension.
+
+    If previously disabled: System Settings > General > Login Items & Extensions > Driver Extensions > Toggle TinyGPU ON
+
+    """
+
+  static func statusText(_ state: DextState) -> String {
+    switch state {
+    case .unloaded: return "Driver extension not installed.\n\n"
+    case .activating: return "Extension is activating...\n\n"
+    case .needsApproval: return "Extension awaiting approval.\n\n" + approvalHelp
+    case .activated: return "Extension is ready! Run tinygrad to use your eGPU.\n\n"
+    }
+  }
+
+  func run(args: [String], done: @escaping (TinyGPUCLIExit) -> Void) {
+    self.done = done
+    guard args.count > 1 else { return usage() }
+
+    switch args[1] {
+    case "status":
+      print(Self.statusText(Self.queryDextState(dextID)))
+      done(.ok)
+    case "install":
+      if Self.queryDextState(dextID) == .needsApproval { print(Self.statusText(.needsApproval)); return done(.needsApproval) }
+      print("Installing TinyGPU driver extension...\nYou may need to approve in System Settings.\n")
+      submitRequest(activate: true)
+    case "uninstall":
+      guard Self.queryDextState(dextID) != .unloaded else { print("Not installed.\n"); return done(.ok) }
+      print("Uninstalling TinyGPU driver extension...\n")
+      isInstall = false
+      submitRequest(activate: false)
+    case "server":
+      guard args.count > 2 else { print("Error: server requires socket path\n"); return usage() }
+      done(run_server(args[2]) == 0 ? .ok : .failed)
+    case "help", "-h", "--help":
+      usage(); done(.ok)
+    default:
+      print("Unknown command: \(args[1])\n"); usage()
+    }
+  }
+
+  private func usage() {
+    print("""
+      Usage: TinyGPU <command>
+        status     Show extension status
+        install    Install the driver extension
+        uninstall  Remove the driver extension
+        server <path>  Start server on Unix socket
+      """)
+    done?(.usage)
+  }
+
+  private func submitRequest(activate: Bool) {
+    let req = activate
+      ? OSSystemExtensionRequest.activationRequest(forExtensionWithIdentifier: dextID, queue: .main)
+      : OSSystemExtensionRequest.deactivationRequest(forExtensionWithIdentifier: dextID, queue: .main)
+    req.delegate = self
+    OSSystemExtensionManager.shared.submitRequest(req)
+  }
+
+  // MARK: - OSSystemExtensionRequestDelegate
+  func requestNeedsUserApproval(_ request: OSSystemExtensionRequest) {
+    print("\nUser approval required!\n\n\(Self.approvalHelp)After approval, connect the gpu and use it with tinygrad.\n")
+    done?(.needsApproval)
+  }
+
+  func request(_ request: OSSystemExtensionRequest, didFinishWithResult result: OSSystemExtensionRequest.Result) {
+    switch result {
+    case .completed: print("Driver extension \(isInstall ? "installed" : "uninstalled") successfully!\n")
+    case .willCompleteAfterReboot: print("Will complete after reboot.\n")
+    @unknown default: print("Completed: \(result)\n")
+    }
+    done?(.ok)
+  }
+
+  func request(_ request: OSSystemExtensionRequest, didFailWithError error: Error) {
+    print("\nError: \(error.localizedDescription)\n")
+    let code = (error as NSError).code
+    if code == 4 { print("Missing entitlements. Rebuild with proper signing.\n") }
+    else if code == 8 { print("Extension not found in app bundle.\n") }
+    else if code == 9 { print("Extension disabled by user.\n\n\(Self.approvalHelp)") }
+    done?(.failed)
+  }
+
+  func request(_ request: OSSystemExtensionRequest, actionForReplacingExtension existing: OSSystemExtensionProperties,
+               withExtension ext: OSSystemExtensionProperties) -> OSSystemExtensionRequest.ReplacementAction {
+    print("Updating v\(existing.bundleShortVersion) -> v\(ext.bundleShortVersion)...\n")
+    return .replace
+  }
+}

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/Shared/server.c

@@ -0,0 +1,285 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sys/mman.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <dispatch/dispatch.h>
+#include <CoreFoundation/CoreFoundation.h>
+#include <IOKit/IOKitLib.h>
+#include <IOKit/IOMessage.h>
+#include <mach/mach.h>
+
+// Protocol
+
+enum {
+  CMD_PROBE = 0,          // probe devices, returns count
+  CMD_MAP_BAR = 1,        // map PCI BAR, returns size
+  CMD_MAP_SYSMEM_FD = 2,  // alloc DMA memory, returns fd via SCM_RIGHTS
+  CMD_CFG_READ = 3,       // read PCI config space
+  CMD_CFG_WRITE = 4,      // write PCI config space
+  CMD_RESET = 5,          // reset device
+  CMD_MMIO_READ = 6,      // bulk read from BAR
+  CMD_MMIO_WRITE = 7,     // bulk write to BAR
+  CMD_MAP_SYSMEM = 8,     // map system memory
+  CMD_SYSMEM_READ = 9,    // bulk read from system memory
+  CMD_SYSMEM_WRITE = 10,  // bulk write to system memory
+  CMD_RESIZE_BAR = 11,    // resize bar (noop)
+  RESP_OK = 0, RESP_ERR = 1,
+};
+
+typedef struct { uint8_t cmd; uint32_t dev_id, bar; uint64_t arg0, arg1, arg2; } __attribute__((packed)) request_t;
+typedef struct { uint8_t status; uint64_t resp0, resp1; } __attribute__((packed)) response_t;
+
+// Constants and state
+
+#define BULK_BUF_SIZE (64 << 20)
+#define MAX_BARS 6
+#define MAX_SYSMEM 128
+
+static uint8_t g_bulk_buf[BULK_BUF_SIZE];
+static io_connect_t g_conn = IO_OBJECT_NULL;
+static int g_client_active = 0;
+
+static struct { mach_vm_address_t addr; mach_vm_size_t size; } g_bars[MAX_BARS];
+static struct { mach_vm_address_t addr; mach_vm_size_t size; int shm_fd; char shm_name[32]; } g_sysmem[MAX_SYSMEM];
+static int g_sysmem_count = 0;
+
+// Utilities
+
+static void recvall(int fd, void *buf, size_t len) {
+  for (size_t off = 0; off < len; ) {
+    ssize_t r = recv(fd, (uint8_t*)buf + off, len - off, 0);
+    if (r <= 0) break;
+    off += r;
+  }
+}
+
+// MMIO requires 32-bit aligned volatile accesses
+static void mmio_copy(void *dst, void *src, size_t len) {
+  volatile uint32_t *d = dst, *s = src;
+  for (size_t i = 0; i < len / 4; i++) d[i] = s[i];
+  for (size_t i = len & ~3; i < len; i++) ((volatile uint8_t*)dst)[i] = ((volatile uint8_t*)src)[i];
+}
+
+static int send_response(int fd, response_t *resp, int send_fd) {
+  char cmsgbuf[CMSG_SPACE(sizeof(int))];
+  struct iovec iov = {resp, sizeof(*resp)};
+  struct msghdr msg = {.msg_iov = &iov, .msg_iovlen = 1};
+
+  if (send_fd >= 0) {
+    msg.msg_control = cmsgbuf;
+    msg.msg_controllen = sizeof(cmsgbuf);
+    struct cmsghdr *cmsg = CMSG_FIRSTHDR(&msg);
+    *cmsg = (struct cmsghdr){.cmsg_level = SOL_SOCKET, .cmsg_type = SCM_RIGHTS, .cmsg_len = CMSG_LEN(sizeof(int))};
+    memcpy(CMSG_DATA(cmsg), &send_fd, sizeof(int));
+  }
+  return sendmsg(fd, &msg, 0) > 0 ? 0 : -1;
+}
+
+static void send_error(int fd, const char *msg) {
+  response_t resp = {.status = RESP_ERR, .resp0 = strlen(msg)};
+  send_response(fd, &resp, -1);
+  send(fd, msg, strlen(msg), 0);
+}
+
+// Driver interface
+
+static void on_disconnect(void *refcon, io_service_t svc, uint32_t msg, void *arg) {
+  if (msg == kIOMessageServiceIsTerminated) _exit(0);
+}
+
+static io_connect_t open_tinygpu(void) {
+  static io_object_t notif;
+  io_service_t svc = IOServiceGetMatchingService(kIOMainPortDefault, IOServiceNameMatching("tinygpu"));
+  if (!svc) return IO_OBJECT_NULL;
+
+  if (!notif) {
+    IONotificationPortRef port = IONotificationPortCreate(kIOMainPortDefault);
+    IONotificationPortSetDispatchQueue(port, dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0));
+    IOServiceAddInterestNotification(port, svc, kIOGeneralInterest, on_disconnect, NULL, &notif);
+  }
+
+  io_connect_t conn;
+  kern_return_t kr = IOServiceOpen(svc, mach_task_self(), 0, &conn);
+  IOObjectRelease(svc);
+  return kr == KERN_SUCCESS ? conn : IO_OBJECT_NULL;
+}
+
+static int dext_rpc(uint32_t sel, uint64_t *in, uint32_t in_cnt, uint64_t *out_val) {
+  uint64_t out[2];
+  uint32_t out_cnt = 2;
+  if (IOConnectCallMethod(g_conn, sel, in, in_cnt, NULL, 0, out, &out_cnt, NULL, NULL) != KERN_SUCCESS) return -1;
+  if (out_val) *out_val = out[0];
+  return 0;
+}
+
+static int map_bar(uint32_t bar, response_t *resp) {
+  if (bar >= MAX_BARS) return -1;
+  if (!g_bars[bar].addr && IOConnectMapMemory64(g_conn, bar, mach_task_self(), &g_bars[bar].addr, &g_bars[bar].size, kIOMapAnywhere)) return -1;
+  resp->resp0 = g_bars[bar].addr;
+  resp->resp1 = g_bars[bar].size;
+  return 0;
+}
+
+static int map_sysmem_fd(uint64_t size, int contiguous, response_t *resp, int *out_fd) {
+  if (g_sysmem_count >= MAX_SYSMEM) return -1;
+  int idx = g_sysmem_count;
+  int fd = -1;
+  void *ptr = MAP_FAILED;
+  char shm_name[32];
+
+  // page-align, min 16KB for IOMemoryDescriptor
+  size_t alloc_sz = (size + 0xfff) & ~0xfff;
+  if (alloc_sz < 0x4000) alloc_sz = 0x4000;
+
+  snprintf(shm_name, sizeof(shm_name), "/tinygpu_%d", idx);
+  shm_unlink(shm_name);
+  if ((fd = shm_open(shm_name, O_CREAT | O_RDWR, 0600)) < 0) goto fail;
+  if (ftruncate(fd, alloc_sz) < 0) goto fail;
+  if ((ptr = mmap(NULL, alloc_sz, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)) == MAP_FAILED) goto fail;
+
+  // PrepareDMA writes physical addresses to output buffer, copy to shared mem
+  uint8_t paddr_buf[8192] = {0};
+  size_t out_sz = sizeof(paddr_buf);
+  if (IOConnectCallStructMethod(g_conn, 3, ptr, alloc_sz, paddr_buf, &out_sz) != KERN_SUCCESS) goto fail;
+  memcpy(ptr, paddr_buf, out_sz);
+
+  g_sysmem[idx] = (typeof(g_sysmem[idx])){.addr = (mach_vm_address_t)ptr, .size = alloc_sz, .shm_fd = fd};
+  strncpy(g_sysmem[idx].shm_name, shm_name, sizeof(g_sysmem[idx].shm_name));
+  g_sysmem_count++;
+
+  *resp = (response_t){.resp0 = alloc_sz, .resp1 = idx};
+  *out_fd = fd;
+  return 0;
+
+fail:
+  if (ptr != MAP_FAILED) munmap(ptr, alloc_sz);
+  if (fd >= 0) close(fd);
+  shm_unlink(shm_name);
+  return -1;
+}
+
+static int validate_bar(uint8_t bar, uint64_t off, uint64_t sz) {
+  return (bar < MAX_BARS && g_bars[bar].addr && off + sz <= g_bars[bar].size && sz <= BULK_BUF_SIZE) ? 0 : -1;
+}
+
+static void cleanup(void) {
+  for (int i = 0; i < MAX_BARS; i++)
+    if (g_bars[i].addr) { IOConnectUnmapMemory64(g_conn, i, mach_task_self(), g_bars[i].addr); g_bars[i].addr = 0; }
+
+  for (int i = 0; i < g_sysmem_count; i++) {
+    munmap((void*)g_sysmem[i].addr, g_sysmem[i].size);
+    close(g_sysmem[i].shm_fd);
+    shm_unlink(g_sysmem[i].shm_name);
+  }
+
+  g_sysmem_count = 0;
+  if (g_conn != IO_OBJECT_NULL) { IOServiceClose(g_conn); g_conn = IO_OBJECT_NULL; }
+}
+
+static void handle_client(int fd) {
+  int bufsize = BULK_BUF_SIZE;
+  setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &bufsize, sizeof(bufsize));
+  setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &bufsize, sizeof(bufsize));
+  printf("client connected\n");
+
+  g_conn = open_tinygpu();
+  if (g_conn == IO_OBJECT_NULL) {
+    fprintf(stderr, "failed to connect to tinygpu driver\n");
+    request_t req; recv(fd, &req, sizeof(req), 0);
+    send_error(fd, "Driver not available. Check: System Report > PCI for GPU, System Settings > Privacy & Security.");
+    return;
+  }
+
+  request_t req;
+  response_t resp;
+  while (recv(fd, &req, sizeof(req), 0) == sizeof(req)) {
+    resp = (response_t){0};
+
+    switch (req.cmd) {
+    case CMD_MAP_BAR:
+      resp.status = map_bar(req.bar, &resp) ? 1 : 0;
+      break;
+
+    case CMD_MAP_SYSMEM_FD: {
+      int shm_fd = -1;
+      resp.status = map_sysmem_fd(req.arg0, (int)req.arg1, &resp, &shm_fd) ? 1 : 0;
+      send_response(fd, &resp, shm_fd);
+      continue;
+    }
+
+    case CMD_CFG_READ: {
+      uint64_t in[2] = {req.arg0, req.arg1};
+      resp.status = dext_rpc(0, in, 2, &resp.resp0) ? 1 : 0;
+      break;
+    }
+
+    case CMD_CFG_WRITE: {
+      uint64_t in[3] = {req.arg0, req.arg1, req.arg2};
+      resp.status = dext_rpc(1, in, 3, NULL) ? 1 : 0;
+      break;
+    }
+
+    case CMD_RESIZE_BAR:
+      break;
+
+    case CMD_RESET:
+      resp.status = dext_rpc(2, NULL, 0, NULL) ? 1 : 0;
+      break;
+
+    case CMD_MMIO_READ:
+      if (validate_bar(req.bar, req.arg0, req.arg1)) { resp.status = 1; break; }
+      mmio_copy(g_bulk_buf, (void*)(g_bars[req.bar].addr + req.arg0), req.arg1);
+      resp.resp0 = req.arg1;
+      send_response(fd, &resp, -1);
+      send(fd, g_bulk_buf, req.arg1, 0);
+      continue;
+
+    case CMD_MMIO_WRITE:
+      recvall(fd, g_bulk_buf, req.arg1);
+      if (!validate_bar(req.bar, req.arg0, req.arg1))
+        mmio_copy((void*)(g_bars[req.bar].addr + req.arg0), g_bulk_buf, req.arg1);
+      continue;
+
+    default:
+      resp.status = 1;
+    }
+    send_response(fd, &resp, -1);
+  }
+
+  printf("client disconnected\n");
+  cleanup();
+}
+
+int run_server(const char *sock_path) {
+  int server_fd = socket(AF_UNIX, SOCK_STREAM, 0);
+  if (server_fd < 0) { perror("socket"); return 1; }
+
+  struct sockaddr_un addr = {.sun_family = AF_UNIX};
+  strncpy(addr.sun_path, sock_path, sizeof(addr.sun_path) - 1);
+  unlink(sock_path);
+
+  if (bind(server_fd, (struct sockaddr*)&addr, sizeof(addr)) < 0) { perror("bind"); close(server_fd); return 1; }
+  if (listen(server_fd, 1) < 0) { perror("listen"); close(server_fd); return 1; }
+  printf("listening on %s\n", sock_path);
+
+  while (1) {
+    int client_fd = accept(server_fd, NULL, NULL);
+    if (client_fd < 0) { if (errno == EINTR) continue; perror("accept"); break; }
+    if (g_client_active) { printf("rejected: client already connected\n"); close(client_fd); continue; }
+    g_client_active = 1;
+    handle_client(client_fd);
+    g_client_active = 0;
+    close(client_fd);
+  }
+
+  close(server_fd);
+  unlink(sock_path);
+  cleanup();
+  return 0;
+}

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+<svg viewBox="0 0 130 50" xmlns="http://www.w3.org/2000/svg">
+        <!-- t -->
+        <rect x="10" y="0" width="10" height="40" fill="#000000"></rect>
+        <rect x="0" y="10" width="30" height="10" fill="#000000"></rect>
+        <rect x="10" y="30" width="20" height="10" fill="#000000"></rect>
+        <!-- i -->
+        <rect x="40" y="0" width="10" height="10" fill="#000000"></rect>
+        <rect x="40" y="20" width="10" height="20" fill="#000000"></rect>
+        <!-- n -->
+        <rect x="60" y="10" width="10" height="30" fill="#000000"></rect>
+        <rect x="60" y="10" width="20" height="10" fill="#000000"></rect>
+        <rect x="80" y="20" width="10" height="20" fill="#000000"></rect>
+        <!-- y -->
+        <rect x="100" y="10" width="10" height="20" fill="#000000"></rect>
+        <rect x="100" y="20" width="30" height="10" fill="#000000"></rect>
+        <rect x="120" y="10" width="10" height="30" fill="#000000"></rect>
+        <rect x="100" y="40" width="20" height="10" fill="#000000"></rect>
+      </svg>

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/Shared/tiny_icon.icon/icon.json

@@ -0,0 +1,52 @@
+{
+  "fill" : "automatic",
+  "groups" : [
+    {
+      "layers" : [
+        {
+          "fill-specializations" : [
+            {
+              "value" : "automatic"
+            },
+            {
+              "appearance" : "dark",
+              "value" : {
+                "solid" : "display-p3:0.94011,0.96611,0.94301,1.00000"
+              }
+            },
+            {
+              "appearance" : "tinted",
+              "value" : {
+                "solid" : "display-p3:0.79528,0.79528,0.79528,1.00000"
+              }
+            }
+          ],
+          "hidden" : false,
+          "image-name" : "tiny.svg",
+          "name" : "tiny_svg",
+          "position" : {
+            "scale" : 5,
+            "translation-in-points" : [
+              0,
+              19
+            ]
+          }
+        }
+      ],
+      "shadow" : {
+        "kind" : "neutral",
+        "opacity" : 0.5
+      },
+      "translucency" : {
+        "enabled" : true,
+        "value" : 0.5
+      }
+    }
+  ],
+  "supported-platforms" : {
+    "circles" : [
+      "watchOS"
+    ],
+    "squares" : "shared"
+  }
+}

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/TinyGPUDriverExtension.xcodeproj/project.pbxproj

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+</dict>
+</plist>

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/TinyGPUDriverExtension/TinyGPUDriver.cpp

@@ -0,0 +1,198 @@
+#include "TinyGPUDriver.h"
+#include "TinyGPUDriverUserClient.h"
+#include <DriverKit/IOLib.h>
+#include <PCIDriverKit/PCIDriverKit.h>
+
+struct TinyGPUDriver_IVars
+{
+	IOPCIDevice *pci = nullptr;
+};
+
+bool TinyGPUDriver::init()
+{
+	os_log(OS_LOG_DEFAULT, "tinygpu: init");
+
+	auto answer = super::init();
+	if (!answer) {
+		return false;
+	}
+
+	ivars = new TinyGPUDriver_IVars();
+	if (ivars == nullptr) {
+		return false;
+	}
+
+	return true;
+}
+
+void TinyGPUDriver::free()
+{
+	IOSafeDeleteNULL(ivars, TinyGPUDriver_IVars, 1);
+	super::free();
+}
+
+kern_return_t TinyGPUDriver::Start_Impl(IOService* in_provider)
+{
+	IOServiceName service_name;
+	os_log(OS_LOG_DEFAULT, "tinygpu: on gpu detected");
+
+	kern_return_t err = Start(in_provider, SUPERDISPATCH);
+	if (err) return err;
+
+	ivars->pci = OSDynamicCast(IOPCIDevice, in_provider);
+	if (!ivars->pci) return kIOReturnNoDevice;
+
+	err = ivars->pci->Open(this, 0);
+	if (err) {
+		os_log(OS_LOG_DEFAULT, "tinygpu: Open() failed 0x%08x", err);
+		ivars->pci = nullptr;
+		return err;
+	}
+
+	uint16_t ven = 0, dev = 0;
+	ivars->pci->ConfigurationRead16(kIOPCIConfigurationOffsetVendorID, &ven);
+	ivars->pci->ConfigurationRead16(kIOPCIConfigurationOffsetDeviceID, &dev);
+	os_log(OS_LOG_DEFAULT, "tinygpu: opened device ven=0x%04x dev=0x%04x", ven, dev);
+
+	uint16_t commandRegister;
+	ivars->pci->ConfigurationRead16(kIOPCIConfigurationOffsetCommand, &commandRegister);
+	commandRegister |= (kIOPCICommandIOSpace | kIOPCICommandBusMaster | kIOPCICommandMemorySpace);
+	ivars->pci->ConfigurationWrite16(kIOPCIConfigurationOffsetCommand, commandRegister);
+
+	memcpy((void*)service_name, (void*)"tinygpu\0", 8);
+	SetName(service_name);
+
+	os_log(OS_LOG_DEFAULT, "tinygpu: will register service %s", service_name);
+	RegisterService();
+
+	os_log(OS_LOG_DEFAULT, "tinygpu: service started %s", service_name);
+	return 0;
+}
+
+kern_return_t TinyGPUDriver::Stop_Impl(IOService* in_provider)
+{
+	ivars->pci->Close(this, 0);
+	return 0;
+}
+
+kern_return_t TinyGPUDriver::NewUserClient_Impl(uint32_t in_type, IOUserClient** out_user_client)
+{
+	kern_return_t err = 0;
+
+	IOService* user_client_service = nullptr;
+	err = Create(this, "TinyGPUDriverUserClientProperties", &user_client_service);
+	if (err) {
+		os_log(OS_LOG_DEFAULT, "tinygpu: failed to create NewUserClient");
+		goto error;
+	}
+	*out_user_client = OSDynamicCast(IOUserClient, user_client_service);
+	os_log(OS_LOG_DEFAULT, "tinygpu: NewUserClient created");
+
+error:
+	return err;
+}
+
+kern_return_t TinyGPUDriver::MapBar(uint32_t bar, IOMemoryDescriptor** memory)
+{
+	uint8_t barMemoryIndex, barMemoryType;
+	uint64_t barMemorySize;
+	kern_return_t err = ivars->pci->GetBARInfo(bar, &barMemoryIndex, &barMemorySize, &barMemoryType);
+	if (err) return err;
+	os_log(OS_LOG_DEFAULT, "tinygpu: bar mapping %d idx=%d", bar, barMemoryIndex);
+	return ivars->pci->_CopyDeviceMemoryWithIndex(barMemoryIndex, memory, this);
+}
+
+static kern_return_t WriteDMASegments(IOMemoryDescriptor* mem, IOAddressSegment* segments, uint32_t segCount,
+                                      uint64_t mapOffset = 0, uint64_t mapSize = 0)
+{
+	// write dma segments to mapped memory as [addr0, len0, addr1, len1, ..., 0, 0]
+
+	IOMemoryMap* map = nullptr;
+	kern_return_t err = mem->CreateMapping(0, 0, 0, mapOffset, mapSize, &map);
+	if (err || !map) return err ?: kIOReturnError;
+
+	uint64_t* out = (uint64_t*)map->GetAddress();
+	for (uint32_t i = 0; i < segCount; i++) { out[i * 2] = segments[i].address; out[i * 2 + 1] = segments[i].length; }
+	out[segCount * 2] = 0; out[segCount * 2 + 1] = 0;
+	map->release();
+	return 0;
+}
+
+kern_return_t TinyGPUDriver::SetupDMA(IOMemoryDescriptor* memory, uint64_t size, IODMACommand** outCmd,
+                                       IOAddressSegment* segments, uint32_t* segCount)
+{
+	IODMACommandSpecification dmaSpec = {.options = 0, .maxAddressBits = 40};
+	IODMACommand* dmaCmd = nullptr;
+
+	kern_return_t err = IODMACommand::Create(ivars->pci, kIODMACommandCreateNoOptions, &dmaSpec, &dmaCmd);
+	if (err) { os_log(OS_LOG_DEFAULT, "tinygpu: DMA create failed err=%d", err); return err; }
+
+	uint64_t flags = kIOMemoryDirectionInOut;
+	err = dmaCmd->PrepareForDMA(kIODMACommandPrepareForDMANoOptions, memory, 0, size, &flags, segCount, segments);
+	if (err) { os_log(OS_LOG_DEFAULT, "tinygpu: PrepareForDMA failed err=%d", err); dmaCmd->release(); return err; }
+
+	*outCmd = dmaCmd;
+	return 0;
+}
+
+kern_return_t TinyGPUDriver::CreateDMA(size_t size, TinyGPUCreateDMAResp* dmaDesc)
+{
+	IOBufferMemoryDescriptor* sharedBuf = nullptr;
+	kern_return_t err = IOBufferMemoryDescriptor::Create(kIOMemoryDirectionInOut, size, IOVMPageSize, &sharedBuf);
+	if (err) { os_log(OS_LOG_DEFAULT, "tinygpu: alloc failed err=%d", err); return err; }
+
+	IODMACommand* dmaCmd = nullptr;
+	IOAddressSegment segments[32];
+	uint32_t segCount = 32;
+	err = SetupDMA(sharedBuf, size, &dmaCmd, segments, &segCount);
+	if (err) { sharedBuf->release(); return err; }
+
+	err = WriteDMASegments(sharedBuf, segments, segCount, IOVMPageSize, IOVMPageSize);
+	if (err) { dmaCmd->CompleteDMA(kIODMACommandCompleteDMANoOptions); dmaCmd->release(); sharedBuf->release(); return err; }
+
+	dmaDesc->sharedBuf = sharedBuf;
+	dmaDesc->dmaCmd = dmaCmd;
+	os_log(OS_LOG_DEFAULT, "tinygpu: CreateDMA size=0x%zx segs=%u", size, segCount);
+	return 0;
+}
+
+kern_return_t TinyGPUDriver::CfgRead(uint32_t off, uint32_t size, uint32_t* outVal)
+{
+  if (!ivars->pci || !outVal) return kIOReturnNotReady;
+
+  if (size == 1) {
+	uint8_t v8 = 0;
+	ivars->pci->ConfigurationRead8(off, &v8);
+	*outVal = v8;
+  } else if (size == 2) {
+	uint16_t v16 = 0;
+	ivars->pci->ConfigurationRead16(off, &v16);
+	*outVal = v16;
+  } else if (size == 4) {
+	uint32_t v32 = 0;
+	ivars->pci->ConfigurationRead32(off, &v32);
+	*outVal = v32;
+  }
+  return 0;
+}
+
+kern_return_t TinyGPUDriver::CfgWrite(uint32_t off, uint32_t size, uint32_t val)
+{
+  if (!ivars->pci) return kIOReturnNotReady;
+  if (size == 1) ivars->pci->ConfigurationWrite8 (off, (uint8_t)val);
+  else if (size == 2) ivars->pci->ConfigurationWrite16(off, (uint16_t)val);
+  else if (size == 4) ivars->pci->ConfigurationWrite32(off, (uint32_t)val);
+  return 0;
+}
+
+kern_return_t TinyGPUDriver::ResetDevice()
+{
+	if (!ivars->pci) return kIOReturnNotReady;
+	kern_return_t ret = ivars->pci->Reset(kIOPCIDeviceResetTypeFunctionReset);
+	return ret == kIOReturnSuccess ? ret : ivars->pci->Reset(kIOPCIDeviceResetTypeHotReset);
+}
+
+IOPCIDevice* TinyGPUDriver::GetPCI()
+{
+	return ivars->pci;
+}

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/TinyGPUDriverExtension/TinyGPUDriver.entitlements

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.developer.driverkit</key>
+	<true/>
+	<key>com.apple.developer.driverkit.transport.pci</key>
+	<array>
+		<dict>
+			<key>IOPCIPrimaryMatch</key>
+			<string>0xFFFFFFFF&amp;0x00000000</string>
+		</dict>
+	</array>
+</dict>
+</plist>

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/TinyGPUDriverExtension/TinyGPUDriver.iig

@@ -0,0 +1,40 @@
+#ifndef TinyGPUDriver_h
+#define TinyGPUDriver_h
+
+#include <Availability.h>
+#include <DriverKit/IOService.iig>
+#include <PCIDriverKit/IOPCIDevice.iig>
+#include <DriverKit/IOMemoryMap.iig>
+#include <DriverKit/IODMACommand.iig>
+
+struct TinyGPUCreateDMAResp
+{
+	IOBufferMemoryDescriptor* sharedBuf;
+	IODMACommand* dmaCmd;
+};
+
+class TinyGPUDriver: public IOService
+{
+public:
+	virtual bool init() override;
+
+	virtual void free() override;
+
+	virtual kern_return_t Start(IOService * provider) override;
+
+	virtual kern_return_t Stop(IOService * provider) override;
+
+	virtual kern_return_t NewUserClient(uint32_t in_type, IOUserClient** out_user_client) override;
+
+	kern_return_t MapBar(uint32_t bar, IOMemoryDescriptor** memory) LOCALONLY;
+	kern_return_t CreateDMA(size_t size, TinyGPUCreateDMAResp* dmaDesc) LOCALONLY;
+	kern_return_t SetupDMA(IOMemoryDescriptor* memory, uint64_t size, IODMACommand** outCmd,
+	                       IOAddressSegment* segments, uint32_t* segCount) LOCALONLY;
+
+	kern_return_t CfgRead(uint32_t off, uint32_t size, uint32_t* val) LOCALONLY;
+	kern_return_t CfgWrite(uint32_t off, uint32_t size, uint32_t val) LOCALONLY;
+	kern_return_t ResetDevice() LOCALONLY;
+	IOPCIDevice* GetPCI() LOCALONLY;
+};
+
+#endif /* TinyGPUDriver_h */

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/TinyGPUDriverExtension/TinyGPUDriverUserClient.cpp

@@ -0,0 +1,191 @@
+#include "TinyGPUDriverUserClient.h"
+#include "TinyGPUDriver.h"
+#include <DriverKit/DriverKit.h>
+#include <DriverKit/OSSharedPtr.h>
+#include <PCIDriverKit/PCIDriverKit.h>
+
+struct TinyGPUDriverUserClient_IVars
+{
+	OSSharedPtr<TinyGPUDriver> provider = nullptr;
+
+	TinyGPUCreateDMAResp *dmas = nullptr;
+	size_t dmaCount = 0;
+	size_t dmaCap = 0;
+
+	int ensureDMACap(size_t need)
+	{
+		// not thread-safe
+		if (need <= dmaCap) return 0;
+
+		size_t newCap = dmaCap ? dmaCap * 2 : 16;
+		while (newCap < need) newCap *= 2;
+
+		auto *newArr = IONewZero(TinyGPUCreateDMAResp, newCap);
+		if (!newArr) return -kIOReturnNoMemory;
+
+		if (dmas && dmaCount) {
+			memcpy(newArr, dmas, dmaCount * sizeof(TinyGPUCreateDMAResp));
+		}
+
+		IOSafeDeleteNULL(dmas, TinyGPUCreateDMAResp, dmaCap);
+		dmas = newArr;
+		dmaCap = newCap;
+		return 0;
+	}
+};
+
+bool TinyGPUDriverUserClient::init()
+{
+	auto ok = super::init();
+	if (!ok) return false;
+
+	ivars = IONewZero(TinyGPUDriverUserClient_IVars, 1);
+	if (!ivars) return false;
+	return true;
+}
+
+void TinyGPUDriverUserClient::free()
+{
+	if (ivars) {
+		IOSafeDeleteNULL(ivars, TinyGPUDriverUserClient_IVars, 1);
+	}
+	super::free();
+}
+
+kern_return_t TinyGPUDriverUserClient::Start_Impl(IOService* in_provider)
+{
+	kern_return_t err = kIOReturnSuccess;
+	if (!in_provider) {
+		os_log(OS_LOG_DEFAULT, "tinygpu: provider is null");
+		err = kIOReturnBadArgument;
+		goto error;
+	}
+
+	err = Start(in_provider, SUPERDISPATCH);
+	if (err) {
+		os_log(OS_LOG_DEFAULT, "tinygpu: failed to start super (%d)", err);
+		goto error;
+	}
+
+	ivars->provider = OSSharedPtr(OSDynamicCast(TinyGPUDriver, in_provider), OSRetain);
+	return 0;
+
+error:
+	ivars->provider.reset();
+	return err;
+}
+
+kern_return_t TinyGPUDriverUserClient::Stop_Impl(IOService* in_provider)
+{
+	// release all DMA allocations for this client
+	if (ivars) {
+		for (size_t i = 0; i < ivars->dmaCount; i++) {
+			auto &d = ivars->dmas[i];
+			if (d.dmaCmd) {
+				d.dmaCmd->CompleteDMA(kIODMACommandCompleteDMANoOptions);
+				d.dmaCmd->release();
+				d.dmaCmd = nullptr;
+			}
+		}
+		ivars->dmaCount = 0;
+		IOSafeDeleteNULL(ivars->dmas, TinyGPUCreateDMAResp, ivars->dmaCap);
+		ivars->dmas = nullptr;
+		ivars->provider.reset();
+	}
+
+	return Stop(in_provider, SUPERDISPATCH);
+}
+
+kern_return_t TinyGPUDriverUserClient::ExternalMethod(uint64_t selector, IOUserClientMethodArguments* args, const IOUserClientMethodDispatch* in_dispatch, OSObject* in_target, void* in_reference)
+{
+	kern_return_t err = 0;
+
+	os_log(OS_LOG_DEFAULT, "tinygpu: rpc (%llu) in:%d, out:%d", selector, args->scalarInputCount, args->scalarOutputCount);
+
+	if (selector == TinyGPURPC::ReadCfg) {
+		if (args->scalarInputCount != 2 or args->scalarOutputCount < 1) return kIOReturnBadArgument;
+
+		uint32_t off = uint32_t(args->scalarInput[0]);
+		uint32_t size = uint32_t(args->scalarInput[1]);
+
+		uint32_t val = 0;
+		err = ivars->provider->CfgRead(off, size, &val);
+		os_log(OS_LOG_DEFAULT, "tinygpu: read cfg off:%x sz:%d, val:%x", off, size, val);
+
+		if (!err) {
+			args->scalarOutput[0] = val;
+			args->scalarOutputCount = 1;
+		}
+		return err;
+	} else if (selector == TinyGPURPC::WriteCfg) {
+		if (args->scalarInputCount != 3) return kIOReturnBadArgument;
+
+		uint32_t off = uint32_t(args->scalarInput[0]);
+		uint32_t size = uint32_t(args->scalarInput[1]);
+		uint32_t val = uint32_t(args->scalarInput[2]);
+
+		os_log(OS_LOG_DEFAULT, "tinygpu: wr cfg off:%x sz:%d, val:%x", off, size, val);
+		return ivars->provider->CfgWrite(off, size, val);
+	} else if (selector == TinyGPURPC::Reset) {
+		os_log(OS_LOG_DEFAULT, "tinygpu: reset");
+		return ivars->provider->ResetDevice();
+	} else if (selector == TinyGPURPC::PrepareDMA) {
+		// both input and output buffers must be >= 4097 bytes for IOMemoryDescriptor
+		if (!args->structureInputDescriptor || !args->structureOutputDescriptor) {
+			os_log(OS_LOG_DEFAULT, "tinygpu: PrepareDMA requires buffers >= 4097 bytes");
+			return kIOReturnBadArgument;
+		}
+		if (ivars->ensureDMACap(ivars->dmaCount + 1)) return kIOReturnNoMemory;
+
+		uint64_t size = 0;
+		args->structureInputDescriptor->GetLength(&size);
+
+		IODMACommand* dmaCmd = nullptr;
+		IOAddressSegment segments[32];
+		uint32_t segCount = 32;
+		err = ivars->provider->SetupDMA(args->structureInputDescriptor, size, &dmaCmd, segments, &segCount);
+		if (err) return err;
+
+		// write physical addresses to output: [addr0, len0, addr1, len1, ..., 0, 0]
+		IOMemoryMap* outMap = nullptr;
+		err = args->structureOutputDescriptor->CreateMapping(0, 0, 0, 0, 0, &outMap);
+		if (err || !outMap) { os_log(OS_LOG_DEFAULT, "tinygpu: output map failed err=%d", err); dmaCmd->release(); return err; }
+
+		uint64_t* out = (uint64_t*)outMap->GetAddress();
+		for (uint32_t i = 0; i < segCount; i++) { out[i * 2] = segments[i].address; out[i * 2 + 1] = segments[i].length; }
+		out[segCount * 2] = 0; out[segCount * 2 + 1] = 0;
+		outMap->release();
+
+		os_log(OS_LOG_DEFAULT, "tinygpu: PrepareDMA size=%llu segs=%u", size, segCount);
+		ivars->dmas[ivars->dmaCount++] = {nullptr, dmaCmd};
+		return kIOReturnSuccess;
+	}
+
+	return kIOReturnUnsupported;
+}
+
+kern_return_t IMPL(TinyGPUDriverUserClient, CopyClientMemoryForType)
+{
+	if (!memory) return kIOReturnBadArgument;
+	if (!ivars->provider.get()) return kIOReturnNotAttached;
+
+	// bar handling, type is bar num
+	if (type < 6) {
+		uint32_t bar = (uint32_t)type;
+		return ivars->provider->MapBar(bar, memory);
+	}
+
+	// dma handling, type is size
+	if (ivars->ensureDMACap(ivars->dmaCount + 1)) {
+		os_log(OS_LOG_DEFAULT, "tinygpu: cannot grow dma array");
+		return kIOReturnNoMemory;
+	}
+
+	TinyGPUCreateDMAResp buf{};
+	kern_return_t err = ivars->provider->CreateDMA(type, &buf);
+	if (err) return err;
+
+	ivars->dmas[ivars->dmaCount++] = buf;
+	*memory = buf.sharedBuf;
+	return 0;
+}

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/TinyGPUDriverExtension/TinyGPUDriverUserClient.iig

@@ -0,0 +1,29 @@
+#ifndef TinyGPUDriverUserClient_h
+#define TinyGPUDriverUserClient_h
+
+#include <DriverKit/IOUserClient.iig>
+
+enum TinyGPURPC
+{
+	ReadCfg,
+	WriteCfg,
+	Reset,
+	PrepareDMA,
+};
+
+class TinyGPUDriverUserClient : public IOUserClient
+{
+public:
+	virtual bool init() final;
+	virtual void free() final;
+
+	virtual kern_return_t Start(IOService* in_provider) final;
+	virtual kern_return_t Stop(IOService* in_provider) final;
+
+	virtual kern_return_t ExternalMethod(uint64_t in_selector, IOUserClientMethodArguments* in_arguments, const IOUserClientMethodDispatch* in_dispatch, OSObject* in_target, void* in_reference) final;
+
+	virtual kern_return_t CopyClientMemoryForType(
+		uint64_t type, uint64_t *options, IOMemoryDescriptor **memory) final;
+};
+
+#endif /* TinyGPUDriverUserClient_h */

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/build_and_sign.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+set -e
+
+xcodebuild clean build CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO -alltargets -configuration Release build
+
+cp "../profiles/driver_release_0431.provisionprofile" "./build/Release/TinyGPU.app/Contents/Library/SystemExtensions/org.tinygrad.tinygpu.driver2.dext/embedded.provisionprofile"
+cp "../profiles/installer_release_0431.provisionprofile" "./build/Release/TinyGPU.app/Contents/embedded.provisionprofile"
+
+codesign \
+    --sign "Developer ID Application: tinygrad, Corp. (9YG3G8543N)" \
+    --entitlements ./TinyGPUDriverExtension/TinyGPUDriver.Release.entitlements \
+    --verbose \
+    --options runtime \
+    --timestamp \
+    --force \
+    ./build/Release/TinyGPU.app/Contents/Library/SystemExtensions/org.tinygrad.tinygpu.driver2.dext
+
+codesign \
+    --sign "Developer ID Application: tinygrad, Corp. (9YG3G8543N)" \
+    --entitlements ./macOS/macOS.entitlements \
+    --options runtime \
+    --verbose \
+    --timestamp \
+    --force \
+    ./build/Release/TinyGPU.app
+
+codesign --verify --deep --strict --verbose=4 ./build/Release/TinyGPU.app/Contents/Library/SystemExtensions/org.tinygrad.tinygpu.driver2.dext
+
+codesign --verify --deep --strict --verbose=4 ./build/Release/TinyGPU.app
+
+spctl -a -vv ./build/Release/TinyGPU.app
+
+spctl -a -vv ./build/Release/TinyGPU.app/Contents/Library/SystemExtensions/org.tinygrad.tinygpu.driver2.dext

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/build_and_sign_nv.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+set -e
+
+xcodebuild clean build CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO -alltargets -configuration Release build
+
+cp "../profiles/edriver_rel_2.provisionprofile" "./build/Release/TinyGPU.app/Contents/Library/SystemExtensions/org.tinygrad.tinygpu.driver2.dext/embedded.provisionprofile"
+cp "../profiles/installer_provisioning.provisionprofile" "./build/Release/TinyGPU.app/Contents/embedded.provisionprofile"
+
+codesign \
+    --sign "Developer ID Application: tinygrad, Corp. (9YG3G8543N)" \
+    --entitlements ./TinyGPUDriverExtension/TinyGPUDriver.NV.Release.entitlements \
+    --verbose \
+    --options runtime \
+    --timestamp \
+    --force \
+    ./build/Release/TinyGPU.app/Contents/Library/SystemExtensions/org.tinygrad.tinygpu.driver2.dext
+
+codesign \
+    --sign "Developer ID Application: tinygrad, Corp. (9YG3G8543N)" \
+    --entitlements ./macOS/macOS.entitlements \
+    --options runtime \
+    --verbose \
+    --timestamp \
+    --force \
+    ./build/Release/TinyGPU.app
+
+codesign --verify --deep --strict --verbose=4 ./build/Release/TinyGPU.app/Contents/Library/SystemExtensions/org.tinygrad.tinygpu.driver2.dext
+
+codesign --verify --deep --strict --verbose=4 ./build/Release/TinyGPU.app
+
+spctl -a -vv ./build/Release/TinyGPU.app
+
+spctl -a -vv ./build/Release/TinyGPU.app/Contents/Library/SystemExtensions/org.tinygrad.tinygpu.driver2.dext

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/install_nosip.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+set -e
+
+# Check SIP status if not building only
+if [[ "$1" != "--build" ]]; then
+  SIP_STATUS=$(csrutil status 2>&1)
+  if [[ "$SIP_STATUS" == *"enabled"* ]]; then
+    echo "ERROR: System Integrity Protection (SIP) is enabled."
+    echo "This dev build requires SIP to be disabled to load unsigned dexts."
+    echo ""
+    echo "To disable SIP:"
+    echo "  1. Restart and hold Power button (M1+) or Cmd+R (Intel)"
+    echo "  2. Open Terminal from Recovery menu"
+    echo "  3. Run: csrutil disable"
+    echo "  4. Restart"
+    exit 1
+  fi
+fi
+
+echo "SIP is disabled, proceeding with dev build..."
+
+cd "$(dirname "$0")"
+
+# Build without code signing
+xcodebuild clean build CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO -alltargets -configuration Debug build
+
+APP_PATH="./build/Debug/TinyGPU.app"
+DEXT_PATH="$APP_PATH/Contents/Library/SystemExtensions/org.tinygrad.tinygpu.driver2.dext"
+
+# Ad-hoc sign with dev entitlements (matches any GPU)
+codesign --sign - --entitlements ./TinyGPUDriverExtension/TinyGPUDriver.NoSIP.entitlements --force --timestamp --verbose "$DEXT_PATH"
+codesign --sign - --entitlements ./macOS/macOS.entitlements --force --timestamp --verbose "$APP_PATH"
+
+echo "Build complete: $APP_PATH"
+
+if [[ "$1" == "--build" ]]; then
+  exit 0
+fi
+
+# Install
+echo "Installing to /Applications..."
+
+if [ -d "/Applications/TinyGPU.app" ]; then
+  echo "Removing existing /Applications/TinyGPU.app..."
+  rm -rf "/Applications/TinyGPU.app"
+fi
+
+cp -r "$APP_PATH" /Applications/
+echo "Installed to /Applications/TinyGPU.app"
+
+echo "Activating driver extension..."
+/Applications/TinyGPU.app/Contents/MacOS/TinyGPU install

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/macOS/macOS.entitlements

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.app-sandbox</key>
+	<false/>
+	<key>com.apple.security.files.user-selected.read-only</key>
+	<true/>
+	<key>com.apple.developer.system-extension.install</key>
+	<true/>
+	<key>com.apple.developer.driverkit.userclient-access</key>
+	<array>
+		<string>org.tinygrad.tinygpu.driver2</string>
+	</array>
+</dict>
+</plist>

artifacts/package_sources/tinygrad/extra/usbgpu/tbgpu/installer/notary_tool.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+set -e
+
+ditto -c -k --keepParent ./build/Release/TinyGPU.app ./build/Release/TinyGPU.zip
+xcrun notarytool submit ./build/Release/TinyGPU.zip --keychain-profile "hgwJFhdheiIEy82nDN" --wait
+
+rm ./build/Release/TinyGPU.zip
+xcrun stapler staple ./build/Release/TinyGPU.app
+ditto -c -k --keepParent ./build/Release/TinyGPU.app ./build/Release/TinyGPU.zip