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06f1edb516
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.
37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
/*
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* Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Types.h>
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//
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// USB Request directions
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//
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// As per Section 9.4 of the USB Specification, it is noted that Requeset Types that
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// Device to Host have bit 7 of `bmRequestType` set. These are here as a convenience,
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// as we construct the request at the call-site to make reading transfers easier.
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//
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static constexpr u8 USB_DEVICE_REQUEST_DEVICE_TO_HOST = 0x80;
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static constexpr u8 USB_DEVICE_REQUEST_HOST_TO_DEVICE = 0x00;
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static constexpr u8 USB_INTERFACE_REQUEST_DEVICE_TO_HOST = 0x81;
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static constexpr u8 USB_INTERFACE_REQUEST_HOST_TO_DEVICE = 0x01;
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static constexpr u8 USB_ENDPOINT_REQUEST_DEVICE_TO_HOST = 0x82;
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static constexpr u8 USB_ENDPOINT_REQUEST_HOST_TO_DEVICE = 0x02;
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//
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// Standard USB request types
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//
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// These are found in Section 9.4 of the USB Spec
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//
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static constexpr u8 USB_REQUEST_GET_STATUS = 0x00;
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static constexpr u8 USB_REQUEST_CLEAR_FEATURE = 0x01;
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static constexpr u8 USB_REQUEST_SET_FEATURE = 0x03;
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static constexpr u8 USB_REQUEST_SET_ADDRESS = 0x05;
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static constexpr u8 USB_REQUEST_GET_DESCRIPTOR = 0x06;
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static constexpr u8 USB_REQUEST_SET_DESCRIPTOR = 0x07;
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static constexpr u8 USB_REQUEST_GET_CONFIGURATION = 0x08;
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static constexpr u8 USB_REQUEST_SET_CONFIGURATION = 0x09;
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