drivers/usb/gadget/f_thor.h

   1 /*
   2  * f_thor.h - USB TIZEN THOR - internal gadget definitions
   3  *
   4  * Copyright (C) 2013 Samsung Electronics
   5  * Lukasz Majewski  <l.majewski@samsung.com>
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #ifndef _USB_THOR_H_
  11 #define _USB_THOR_H_
  12
  13 #include <linux/compiler.h>
  14 #include <linux/sizes.h>
  15
  16 /* THOR Composite Gadget */
  17 #define STRING_MANUFACTURER_IDX 0
  18 #define STRING_PRODUCT_IDX              1
  19 #define STRING_SERIAL_IDX               2
  20
  21 /* ********************************************************** */
  22 /*                   THOR protocol definitions                */
  23 /* ********************************************************** */
  24
  25 /*
  26  * Attribute Vendor descriptor - necessary to prevent ZLP transmission
  27  * from Windows XP HOST PC
  28  */
  29 struct usb_cdc_attribute_vendor_descriptor {
  30         __u8 bLength;
  31         __u8 bDescriptorType;
  32         __u8 bDescriptorSubType;
  33         __u16 DAUType;
  34         __u16 DAULength;
  35         __u8 DAUValue;
  36 } __packed;
  37
  38 #define VER_PROTOCOL_MAJOR      4
  39 #define VER_PROTOCOL_MINOR      0
  40
  41 enum rqt {
  42         RQT_INFO = 200,
  43         RQT_CMD,
  44         RQT_DL,
  45         RQT_UL,
  46 };
  47
  48 enum rqt_data {
  49         /* RQT_INFO */
  50         RQT_INFO_VER_PROTOCOL = 1,
  51         RQT_INIT_VER_HW,
  52         RQT_INIT_VER_BOOT,
  53         RQT_INIT_VER_KERNEL,
  54         RQT_INIT_VER_PLATFORM,
  55         RQT_INIT_VER_CSC,
  56
  57         /* RQT_CMD */
  58         RQT_CMD_REBOOT = 1,
  59         RQT_CMD_POWEROFF,
  60         RQT_CMD_EFSCLEAR,
  61
  62         /* RQT_DL */
  63         RQT_DL_INIT = 1,
  64         RQT_DL_FILE_INFO,
  65         RQT_DL_FILE_START,
  66         RQT_DL_FILE_END,
  67         RQT_DL_EXIT,
  68
  69         /* RQT_UL */
  70         RQT_UL_INIT = 1,
  71         RQT_UL_START,
  72         RQT_UL_END,
  73         RQT_UL_EXIT,
  74 };
  75
  76 struct rqt_box {                /* total: 256B */
  77         s32 rqt;                /* request id */
  78         s32 rqt_data;           /* request data id */
  79         s32 int_data[14];       /* int data */
  80         char str_data[5][32];   /* string data */
  81         char md5[32];           /* md5 checksum */
  82 } __packed;
  83
  84 struct rsp_box {                /* total: 128B */
  85         s32 rsp;                /* response id (= request id) */
  86         s32 rsp_data;           /* response data id */
  87         s32 ack;                /* ack */
  88         s32 int_data[5];        /* int data */
  89         char str_data[3][32];   /* string data */
  90 } __packed;
  91
  92 struct data_rsp_box {           /* total: 8B */
  93         s32 ack;                /* response id (= request id) */
  94         s32 count;              /* response data id */
  95 } __packed;
  96
  97 enum {
  98         FILE_TYPE_NORMAL,
  99         FILE_TYPE_PIT,
 100 };
 101
 102 struct thor_dev {
 103         struct usb_gadget *gadget;
 104         struct usb_request *req; /* EP0 -> control responses */
 105
 106         /* IN/OUT EP's and correspoinding requests */
 107         struct usb_ep *in_ep, *out_ep, *int_ep;
 108         struct usb_request *in_req, *out_req;
 109
 110         /* Control flow variables */
 111         unsigned char configuration_done;
 112         unsigned char rxdata;
 113         unsigned char txdata;
 114 };
 115
 116 struct f_thor {
 117         struct usb_function usb_function;
 118         struct thor_dev *dev;
 119 };
 120
 121 #define F_NAME_BUF_SIZE 32
 122 #define THOR_PACKET_SIZE SZ_1M      /* 1 MiB */
 123 #define THOR_STORE_UNIT_SIZE SZ_32M /* 32 MiB */
 124 #endif /* _USB_THOR_H_ */