| 1 | /* |
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| 2 | * USB Descriptor parsing functions |
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| 3 | * |
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| 4 | * Copyright (c) 2000-2001 Johannes Erdfelt <johannes@erdfelt.com> |
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| 5 | * Copyright 2003, Chaskiel Grundman <cg2v@andrew.cmu.edu> |
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| 6 | * |
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| 7 | * This header file is purely internal to OpenCT. |
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| 8 | */ |
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| 9 | #ifndef __USB_DESCRIPTORS_H__ |
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| 10 | #define __USB_DESCRIPTORS_H__ |
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| 11 | |
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| 12 | #include <openct/types.h> |
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| 13 | |
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| 14 | /* |
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| 15 | * Descriptor types |
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| 16 | */ |
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| 17 | #define IFD_USB_DT_DEVICE 0x01 |
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| 18 | #define IFD_USB_DT_CONFIG 0x02 |
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| 19 | #define IFD_USB_DT_STRING 0x03 |
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| 20 | #define IFD_USB_DT_INTERFACE 0x04 |
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| 21 | #define IFD_USB_DT_ENDPOINT 0x05 |
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| 22 | |
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| 23 | /* |
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| 24 | * Descriptor sizes per descriptor type |
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| 25 | */ |
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| 26 | #define IFD_USB_DT_DEVICE_SIZE 18 |
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| 27 | #define IFD_USB_DT_CONFIG_SIZE 9 |
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| 28 | #define IFD_USB_DT_INTERFACE_SIZE 9 |
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| 29 | #define IFD_USB_DT_ENDPOINT_SIZE 7 |
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| 30 | #define IFD_USB_DT_ENDPOINT_AUDIO_SIZE 9 /* Audio extension */ |
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| 31 | #define IFD_USB_DT_HUB_NONVAR_SIZE 7 |
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| 32 | |
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| 33 | struct ifd_usb_descriptor_header { |
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| 34 | uint8_t bLength; |
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| 35 | uint8_t bDescriptorType; |
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| 36 | }; |
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| 37 | |
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| 38 | /* String descriptor */ |
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| 39 | struct ifd_usb_string_descriptor { |
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| 40 | uint8_t bLength; |
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| 41 | uint8_t bDescriptorType; |
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| 42 | uint16_t wData[1]; |
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| 43 | }; |
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| 44 | |
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| 45 | /* Endpoint descriptor */ |
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| 46 | #define IFD_USB_MAXENDPOINTS 32 |
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| 47 | struct ifd_usb_endpoint_descriptor { |
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| 48 | uint8_t bLength; |
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| 49 | uint8_t bDescriptorType; |
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| 50 | uint8_t bEndpointAddress; |
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| 51 | uint8_t bmAttributes; |
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| 52 | uint16_t wMaxPacketSize; |
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| 53 | uint8_t bInterval; |
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| 54 | uint8_t bRefresh; |
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| 55 | uint8_t bSynchAddress; |
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| 56 | |
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| 57 | unsigned char *extra; /* Extra descriptors */ |
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| 58 | int extralen; |
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| 59 | }; |
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| 60 | #define IFD_USB_ENDPOINT_ADDRESS_MASK 0x0f /* in bEndpointAddress */ |
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| 61 | #define IFD_USB_ENDPOINT_DIR_MASK 0x80 |
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| 62 | |
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| 63 | #define IFD_USB_ENDPOINT_TYPE_MASK 0x03 /* in bmAttributes */ |
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| 64 | #define IFD_USB_ENDPOINT_TYPE_CONTROL 0 |
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| 65 | #define IFD_USB_ENDPOINT_TYPE_ISOCHRONOUS 1 |
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| 66 | #define IFD_USB_ENDPOINT_TYPE_BULK 2 |
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| 67 | #define IFD_USB_ENDPOINT_TYPE_INTERRUPT 3 |
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| 68 | |
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| 69 | /* Interface descriptor */ |
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| 70 | #define IFD_USB_MAXINTERFACES 32 |
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| 71 | struct ifd_usb_interface_descriptor { |
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| 72 | uint8_t bLength; |
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| 73 | uint8_t bDescriptorType; |
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| 74 | uint8_t bInterfaceNumber; |
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| 75 | uint8_t bAlternateSetting; |
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| 76 | uint8_t bNumEndpoints; |
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| 77 | uint8_t bInterfaceClass; |
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| 78 | uint8_t bInterfaceSubClass; |
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| 79 | uint8_t bInterfaceProtocol; |
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| 80 | uint8_t iInterface; |
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| 81 | |
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| 82 | struct ifd_usb_endpoint_descriptor *endpoint; |
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| 83 | |
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| 84 | unsigned char *extra; /* Extra descriptors */ |
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| 85 | int extralen; |
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| 86 | }; |
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| 87 | |
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| 88 | #define IFD_USB_MAXALTSETTING 128 /* Hard limit */ |
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| 89 | struct ifd_usb_interface { |
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| 90 | struct ifd_usb_interface_descriptor *altsetting; |
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| 91 | |
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| 92 | int num_altsetting; |
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| 93 | }; |
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| 94 | |
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| 95 | /* Configuration descriptor information.. */ |
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| 96 | #define IFD_USB_MAXCONFIG 8 |
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| 97 | struct ifd_usb_config_descriptor { |
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| 98 | uint8_t bLength; |
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| 99 | uint8_t bDescriptorType; |
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| 100 | uint16_t wTotalLength; |
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| 101 | uint8_t bNumInterfaces; |
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| 102 | uint8_t bConfigurationValue; |
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| 103 | uint8_t iConfiguration; |
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| 104 | uint8_t bmAttributes; |
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| 105 | uint8_t MaxPower; |
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| 106 | |
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| 107 | struct ifd_usb_interface *interface; |
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| 108 | |
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| 109 | unsigned char *extra; /* Extra descriptors */ |
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| 110 | int extralen; |
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| 111 | }; |
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| 112 | |
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| 113 | /* Device descriptor */ |
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| 114 | struct ifd_usb_device_descriptor { |
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| 115 | uint8_t bLength; |
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| 116 | uint8_t bDescriptorType; |
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| 117 | uint16_t bcdUSB; |
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| 118 | uint8_t bDeviceClass; |
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| 119 | uint8_t bDeviceSubClass; |
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| 120 | uint8_t bDeviceProtocol; |
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| 121 | uint8_t bMaxPacketSize0; |
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| 122 | uint16_t idVendor; |
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| 123 | uint16_t idProduct; |
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| 124 | uint16_t bcdDevice; |
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| 125 | uint8_t iManufacturer; |
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| 126 | uint8_t iProduct; |
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| 127 | uint8_t iSerialNumber; |
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| 128 | uint8_t bNumConfigurations; |
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| 129 | }; |
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| 130 | #define IFD_USB_REQ_GET_DESCRIPTOR 0x06 |
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| 131 | |
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| 132 | #define IFD_USB_TYPE_STANDARD (0x00 << 5) |
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| 133 | #define IFD_USB_TYPE_CLASS (0x01 << 5) |
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| 134 | #define IFD_USB_TYPE_VENDOR (0x02 << 5) |
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| 135 | #define IFD_USB_TYPE_RESERVED (0x03 << 5) |
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| 136 | |
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| 137 | #define IFD_USB_RECIP_DEVICE 0x00 |
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| 138 | #define IFD_USB_RECIP_INTERFACE 0x01 |
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| 139 | #define IFD_USB_RECIP_ENDPOINT 0x02 |
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| 140 | #define IFD_USB_RECIP_OTHER 0x03 |
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| 141 | |
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| 142 | #define IFD_USB_ENDPOINT_IN 0x80 |
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| 143 | #define IFD_USB_ENDPOINT_OUT 0x00 |
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| 144 | |
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| 145 | #define IFD_USB_LE16_TO_CPU(x) do { unsigned char *y=(unsigned char *)(&x); x = (y[1] << 8) | y[0] ; } while(0) |
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| 146 | |
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| 147 | extern int ifd_usb_get_device(ifd_device_t * dev, |
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| 148 | struct ifd_usb_device_descriptor *d); |
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| 149 | |
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| 150 | extern int ifd_usb_get_config(ifd_device_t * dev, |
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| 151 | int n, struct ifd_usb_config_descriptor *c); |
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| 152 | extern void ifd_usb_free_configuration(struct ifd_usb_config_descriptor *c); |
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| 153 | |
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| 154 | #endif |
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