stage1/lv2.h

   1 /*  lv2.h - Lv-2 defines, thunks, and functions
   2
   3 Copyright (C) 2010-2011  Hector Martin "marcan" <hector@marcansoft.com>
   4
   5 This code is licensed to you under the terms of the GNU GPL, version 2;
   6 see file COPYING or http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt
   7 */
   8
   9 #ifndef LV2_H
  10 #define LV2_H
  11
  12 #define NULL 0
  13
  14 typedef unsigned char u8;
  15 typedef unsigned short u16;
  16 typedef unsigned int u32;
  17 typedef unsigned long u64;
  18
  19 typedef signed char s8;
  20 typedef signed short s16;
  21 typedef signed int s32;
  22 typedef signed long s64;
  23
  24 #define CBTHUNK(ret, name, args) asm("" \
  25 "       .section \".text\"\n" \
  26 "       .align 2\n" \
  27 "       .p2align 3,,7\n" \
  28 "       .globl "#name"\n" \
  29 "       .section \".opd\",\"aw\"\n" \
  30 "       .align 3\n" \
  31 #name": \n" \
  32 "       .quad .L."#name",.TOC.@tocbase\n" \
  33 "       .previous\n" \
  34 "       .type   "#name", @function\n" \
  35 ".L."#name":\n" \
  36 "       mflr 0\n" \
  37 "       std 0, 32(1)\n" \
  38 "       std 2, 40(1)\n" \
  39 "       clrrdi 2, 2, 32\n" \
  40 "       oris 2, 2, __toc@h\n" \
  41 "       ori 2, 2, __toc@l\n" \
  42 "       bl .L._"#name"\n" \
  43 "       ld 2, 40(1)\n" \
  44 "       ld 0, 32(1)\n" \
  45 "       mtlr 0\n" \
  46 "       blr\n" \
  47 "       .size "#name",.-.L."#name"\n"); \
  48 ret name args; \
  49 ret _##name args
  50
  51 typedef struct {
  52         const char *name;
  53         int (*probe_func)(int device_id);
  54         int (*attach_func)(int device_id);
  55         int (*detach_func)(int device_id);
  56
  57 } usb_driver_t;
  58
  59 typedef struct {
  60         u8 bmRequestType;
  61         u8 bRequest;
  62         u16 wValue;
  63         u16 wIndex;
  64         u16 wLength;
  65 } control_transfer_t;
  66
  67 // lv1 but meh
  68 void panic(void);
  69 void reboot(void);
  70
  71 // lv2 functions
  72 void *usbGetDescriptor(int device_id, void *start, u8 type);
  73 int usbOpenEndpoint(int device_id, void *epdesc);
  74 int usbControlTransfer(int pipe_id, control_transfer_t *request, void *data, void *cb, void *cbarg);
  75 int printf(const char *fmt, ...);
  76
  77 #endif