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USB: Further Implement USB Structures

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These are the actual structures that allow USB to work (i.e the ones
actually defined in the specification). This should provide us enough
of a baseline implementation that we can build on to support
different types of USB device.
This commit is contained in:
Jesse Buhagiar 2021-02-27 15:10:37 +11:00 • committed by Ali Mohammad Pur
parent e044a3e428
commit 06f1edb516
16 changed files with 1037 additions and 89 deletions
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37
Kernel/Devices/USB/USBRequest.h Normal file
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/*
* Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Types.h>
//
// USB Request directions
//
// As per Section 9.4 of the USB Specification, it is noted that Requeset Types that
// Device to Host have bit 7 of `bmRequestType` set. These are here as a convenience,
// as we construct the request at the call-site to make reading transfers easier.
//
static constexpr u8 USB_DEVICE_REQUEST_DEVICE_TO_HOST = 0x80;
static constexpr u8 USB_DEVICE_REQUEST_HOST_TO_DEVICE = 0x00;
static constexpr u8 USB_INTERFACE_REQUEST_DEVICE_TO_HOST = 0x81;
static constexpr u8 USB_INTERFACE_REQUEST_HOST_TO_DEVICE = 0x01;
static constexpr u8 USB_ENDPOINT_REQUEST_DEVICE_TO_HOST = 0x82;
static constexpr u8 USB_ENDPOINT_REQUEST_HOST_TO_DEVICE = 0x02;
//
// Standard USB request types
//
// These are found in Section 9.4 of the USB Spec
//
static constexpr u8 USB_REQUEST_GET_STATUS = 0x00;
static constexpr u8 USB_REQUEST_CLEAR_FEATURE = 0x01;
static constexpr u8 USB_REQUEST_SET_FEATURE = 0x03;
static constexpr u8 USB_REQUEST_SET_ADDRESS = 0x05;
static constexpr u8 USB_REQUEST_GET_DESCRIPTOR = 0x06;
static constexpr u8 USB_REQUEST_SET_DESCRIPTOR = 0x07;
static constexpr u8 USB_REQUEST_GET_CONFIGURATION = 0x08;
static constexpr u8 USB_REQUEST_SET_CONFIGURATION = 0x09;