Kernel/USB: Move USB related files to into specific directory

As the USB/UHCI driver grows in size, it'll be much cleaner to have all of the USB related files in one folder where they can be easily accessed :^)
2025-07-26 05:47:34 +00:00 · 2020-11-10 16:52:13 +11:00 · 2020-11-10 16:52:13 +11:00 · 0dbb9361b8
commit 0dbb9361b8
parent 8b6db78aa7
4 changed files with 3 additions and 3 deletions
--- a/Kernel/Devices/USB/UHCIController.cpp
+++ b/Kernel/Devices/USB/UHCIController.cpp
@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <Kernel/Devices/USB/UHCIController.h>
+
+#define UHCI_ENABLED 0
+
+namespace Kernel {
+
+static constexpr u16 UHCI_USBCMD_RUN = 0x0001;
+static constexpr u16 UHCI_USBCMD_HOST_CONTROLLER_RESET = 0x0002;
+static constexpr u16 UHCI_USBCMD_GLOBAL_RESET = 0x0004;
+static constexpr u16 UHCI_USBCMD_ENTER_GLOBAL_SUSPEND_MODE = 0x0008;
+static constexpr u16 UHCI_USBCMD_FORCE_GLOBAL_RESUME = 0x0010;
+static constexpr u16 UHCI_USBCMD_SOFTWARE_DEBUG = 0x0020;
+static constexpr u16 UHCI_USBCMD_CONFIGURE_FLAG = 0x0040;
+static constexpr u16 UHCI_USBCMD_MAX_PACKET = 0x0080;
+
+static constexpr u16 UHCI_USBSTS_HOST_CONTROLLER_HALTED = 0x0020;
+static constexpr u16 UHCI_USBSTS_HOST_CONTROLLER_PROCESS_ERROR = 0x0010;
+static constexpr u16 UHCI_USBSTS_PCI_BUS_ERROR = 0x0008;
+static constexpr u16 UHCI_USBSTS_RESUME_RECEIVED = 0x0004;
+static constexpr u16 UHCI_USBSTS_USB_ERROR_INTERRUPT = 0x0002;
+static constexpr u16 UHCI_USBSTS_USB_INTERRUPT = 0x0001;
+
+void UHCIController::detect()
+{
+#if !UHCI_ENABLED
+    return;
+#endif
+    PCI::enumerate([&](const PCI::Address& address, PCI::ID id) {
+        if (address.is_null())
+            return;
+
+        if (PCI::get_class(address) == 0xc && PCI::get_subclass(address) == 0x03 && PCI::get_programming_interface(address) == 0) {
+            new UHCIController(address, id);
+        }
+    });
+}
+
+UHCIController::UHCIController(PCI::Address address, PCI::ID id)
+    : PCI::Device(address)
+    , m_io_base(PCI::get_BAR4(pci_address()) & ~1)
+{
+    klog() << "UHCI: Controller found " << id << " @ " << address;
+    klog() << "UHCI: I/O base " << m_io_base;
+    klog() << "UHCI: Interrupt line: " << PCI::get_interrupt_line(pci_address());
+
+    reset();
+    start();
+}
+
+UHCIController::~UHCIController()
+{
+}
+
+void UHCIController::reset()
+{
+    stop();
+
+    write_usbcmd(UHCI_USBCMD_HOST_CONTROLLER_RESET);
+
+    // FIXME: Timeout
+    for (;;) {
+        if (read_usbcmd() & UHCI_USBCMD_HOST_CONTROLLER_RESET)
+            continue;
+        break;
+    }
+
+    klog() << "UHCI: Reset completed!";
+}
+
+void UHCIController::stop()
+{
+    write_usbcmd(read_usbcmd() & ~UHCI_USBCMD_RUN);
+    // FIXME: Timeout
+    for (;;) {
+        if (read_usbsts() & UHCI_USBSTS_HOST_CONTROLLER_HALTED)
+            break;
+    }
+}
+
+void UHCIController::start()
+{
+    write_usbcmd(read_usbcmd() | UHCI_USBCMD_RUN);
+    // FIXME: Timeout
+    for (;;) {
+        if (!(read_usbsts() & UHCI_USBSTS_HOST_CONTROLLER_HALTED))
+            break;
+    }
+    klog() << "UHCI: Started!";
+}
+
+void UHCIController::handle_irq(const RegisterState&)
+{
+}
+
+}