usb_ch9.h

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/*
 * Copyright (c) 2020 PHYTEC Messtechnik GmbH
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#include <version.h>
#include <sys/util.h>
 
#ifndef ZEPHYR_INCLUDE_USB_CH9_H_
#define ZEPHYR_INCLUDE_USB_CH9_H_
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct usb_req_type_field {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
        uint8_t recipient : 5;
        uint8_t type : 2;
        uint8_t direction : 1;
#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
        uint8_t direction : 1;
        uint8_t type : 2;
        uint8_t recipient : 5;
#endif
} __packed;
 
struct usb_setup_packet {
        union {
                uint8_t bmRequestType;
                struct usb_req_type_field RequestType;
        };
        uint8_t bRequest;
        uint16_t wValue;
        uint16_t wIndex;
        uint16_t wLength;
};
 
#define USB_REQTYPE_DIR_TO_DEVICE       0
#define USB_REQTYPE_DIR_TO_HOST         1
 
#define USB_REQTYPE_TYPE_STANDARD       0
#define USB_REQTYPE_TYPE_CLASS          1
#define USB_REQTYPE_TYPE_VENDOR         2
#define USB_REQTYPE_TYPE_RESERVED       3
 
#define USB_REQTYPE_RECIPIENT_DEVICE    0
#define USB_REQTYPE_RECIPIENT_INTERFACE 1
#define USB_REQTYPE_RECIPIENT_ENDPOINT  2
#define USB_REQTYPE_RECIPIENT_OTHER     3
 
#define USB_REQTYPE_GET_DIR(bmRequestType) (((bmRequestType) >> 7) & 0x01U)
#define USB_REQTYPE_GET_TYPE(bmRequestType) (((bmRequestType) >> 5) & 0x03U)
#define USB_REQTYPE_GET_RECIPIENT(bmRequestType) ((bmRequestType) & 0x1FU)
 
static inline bool usb_reqtype_is_to_host(struct usb_setup_packet *setup)
{
        return setup->RequestType.direction == USB_REQTYPE_DIR_TO_HOST;
}
 
static inline bool usb_reqtype_is_to_device(struct usb_setup_packet *setup)
{
        return setup->RequestType.direction == USB_REQTYPE_DIR_TO_DEVICE;
}
 
#define USB_SREQ_GET_STATUS             0x00
#define USB_SREQ_CLEAR_FEATURE          0x01
#define USB_SREQ_SET_FEATURE            0x03
#define USB_SREQ_SET_ADDRESS            0x05
#define USB_SREQ_GET_DESCRIPTOR         0x06
#define USB_SREQ_SET_DESCRIPTOR         0x07
#define USB_SREQ_GET_CONFIGURATION      0x08
#define USB_SREQ_SET_CONFIGURATION      0x09
#define USB_SREQ_GET_INTERFACE          0x0A
#define USB_SREQ_SET_INTERFACE          0x0B
#define USB_SREQ_SYNCH_FRAME            0x0C
 
#define USB_DESC_DEVICE                 1
#define USB_DESC_CONFIGURATION          2
#define USB_DESC_STRING                 3
#define USB_DESC_INTERFACE              4
#define USB_DESC_ENDPOINT               5
#define USB_DESC_DEVICE_QUALIFIER       6
#define USB_DESC_OTHER_SPEED            7
#define USB_DESC_INTERFACE_POWER        8
#define USB_DESC_OTG                    9
#define USB_DESC_DEBUG                  10
#define USB_DESC_INTERFACE_ASSOC        11
#define USB_DESC_BOS                    15
#define USB_DESC_DEVICE_CAPABILITY      16
 
#define USB_DESC_CS_DEVICE              0x21
#define USB_DESC_CS_CONFIGURATION       0x22
#define USB_DESC_CS_STRING              0x23
#define USB_DESC_CS_INTERFACE           0x24
#define USB_DESC_CS_ENDPOINT            0x25
 
#define USB_SFS_ENDPOINT_HALT           0x00
#define USB_SFS_REMOTE_WAKEUP           0x01
#define USB_SFS_TEST_MODE               0x02
 
#define USB_GET_STATUS_SELF_POWERED     BIT(0)
#define USB_GET_STATUS_REMOTE_WAKEUP    BIT(1)
 
struct usb_desc_header {
        uint8_t bLength;
        uint8_t bDescriptorType;
} __packed;
 
struct usb_device_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint16_t bcdUSB;
        uint8_t bDeviceClass;
        uint8_t bDeviceSubClass;
        uint8_t bDeviceProtocol;
        uint8_t bMaxPacketSize0;
        uint16_t idVendor;
        uint16_t idProduct;
        uint16_t bcdDevice;
        uint8_t iManufacturer;
        uint8_t iProduct;
        uint8_t iSerialNumber;
        uint8_t bNumConfigurations;
} __packed;
 
struct usb_cfg_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint16_t wTotalLength;
        uint8_t bNumInterfaces;
        uint8_t bConfigurationValue;
        uint8_t iConfiguration;
        uint8_t bmAttributes;
        uint8_t bMaxPower;
} __packed;
 
struct usb_if_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint8_t bInterfaceNumber;
        uint8_t bAlternateSetting;
        uint8_t bNumEndpoints;
        uint8_t bInterfaceClass;
        uint8_t bInterfaceSubClass;
        uint8_t bInterfaceProtocol;
        uint8_t iInterface;
} __packed;
 
struct usb_ep_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint8_t bEndpointAddress;
        uint8_t bmAttributes;
        uint16_t wMaxPacketSize;
        uint8_t bInterval;
} __packed;
 
struct usb_string_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint16_t bString;
} __packed;
 
struct usb_association_descriptor {
        uint8_t bLength;
        uint8_t bDescriptorType;
        uint8_t bFirstInterface;
        uint8_t bInterfaceCount;
        uint8_t bFunctionClass;
        uint8_t bFunctionSubClass;
        uint8_t bFunctionProtocol;
        uint8_t iFunction;
} __packed;
 
#define USB_SCD_RESERVED        BIT(7)
#define USB_SCD_SELF_POWERED    BIT(6)
#define USB_SCD_REMOTE_WAKEUP   BIT(5)
#define USB_SCD_ATTRIBUTES      (USB_SCD_RESERVED |                           \
                                 COND_CODE_1(CONFIG_USB_SELF_POWERED,         \
                                             (USB_SCD_SELF_POWERED), (0)) |   \
                                 COND_CODE_1(CONFIG_USB_DEVICE_REMOTE_WAKEUP, \
                                             (USB_SCD_REMOTE_WAKEUP), (0)))
 
#define USB_BCC_AUDIO                   0x01
#define USB_BCC_CDC_CONTROL             0x02
#define USB_BCC_HID                     0x03
#define USB_BCC_MASS_STORAGE            0x08
#define USB_BCC_CDC_DATA                0x0A
#define USB_BCC_VIDEO                   0x0E
#define USB_BCC_WIRELESS_CONTROLLER     0xE0
#define USB_BCC_MISCELLANEOUS           0xEF
#define USB_BCC_APPLICATION             0xFE
#define USB_BCC_VENDOR                  0xFF
 
#define USB_SRN_1_1                     0x0110
#define USB_SRN_2_0                     0x0200
#define USB_SRN_2_1                     0x0210
 
#define USB_DEC_TO_BCD(dec)     ((((dec) / 10) << 4) | ((dec) % 10))
 
#define USB_BCD_DRN             (USB_DEC_TO_BCD(KERNEL_VERSION_MAJOR) << 8 | \
                                 USB_DEC_TO_BCD(KERNEL_VERSION_MINOR))
 
#define USB_GET_DESCRIPTOR_TYPE(wValue)         ((uint8_t)((wValue) >> 8))
 
#define USB_GET_DESCRIPTOR_INDEX(wValue)        ((uint8_t)(wValue))
 
#define USB_CONTROL_EP_OUT              0
#define USB_CONTROL_EP_IN               0x80
 
#define USB_CONTROL_EP_MPS              64
 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_INCLUDE_USB_CH9_H_ */