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Kernel/USB: Add some constants for the USBCMD and USBSTS bits

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This commit is contained in:
Andreas Kling 2020-09-04 18:58:37 +02:00
parent e834c24eea
commit 1254447bd7
Notes: sideshowbarker 2024-07-19 02:55:05 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/1254447bd7a
1 changed files with 18 additions and 3 deletions
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21
Kernel/Devices/UHCIController.cpp
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@ -28,7 +28,21 @@
namespace Kernel {
static constexpr u16 UHCI_HOST_CONTROLLER_RESET = 0x0002;
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()
{
@ -59,10 +73,11 @@ UHCIController::~UHCIController()
void UHCIController::reset()
{
write_usbcmd(UHCI_HOST_CONTROLLER_RESET);
write_usbcmd(UHCI_USBCMD_HOST_CONTROLLER_RESET);
// FIXME: Timeout
for (;;) {
if (read_usbcmd() & UHCI_HOST_CONTROLLER_RESET)
if (read_usbcmd() & UHCI_USBCMD_HOST_CONTROLLER_RESET)
continue;
break;
}