LUFA/Drivers/USB/Core/UC3/Pipe_UC3.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 #define  __INCLUDE_FROM_USB_DRIVER
  32 #include "../USBMode.h"
  33
  34 #if defined(USB_CAN_BE_HOST)
  35
  36 #include "../Pipe.h"
  37
  38 uint8_t USB_Host_ControlPipeSize = PIPE_CONTROLPIPE_DEFAULT_SIZE;
  39
  40 volatile uint32_t USB_Pipe_SelectedPipe = PIPE_CONTROLPIPE;
  41 volatile uint8_t* USB_Pipe_FIFOPos[PIPE_TOTAL_PIPES];
  42
  43 bool Pipe_ConfigurePipe(const uint8_t Number,
  44                         const uint8_t Type,
  45                         const uint8_t Token,
  46                         const uint8_t EndpointNumber,
  47                         const uint16_t Size,
  48                         const uint8_t Banks)
  49 {
  50         USB_Pipe_FIFOPos[Number]     = &AVR32_USBB_SLAVE[Number * 0x10000];
  51
  52 #if defined(ORDERED_EP_CONFIG)
  53         Pipe_SelectPipe(Number);
  54         Pipe_EnablePipe();
  55
  56         (&AVR32_USBB.upcfg0)[Number] = 0;
  57         (&AVR32_USBB.upcfg0)[Number] = (AVR32_USBB_ALLOC_MASK |
  58                                         ((uint32_t)Type  << AVR32_USBB_PTYPE_OFFSET)  |
  59                                         ((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
  60                                         ((uint32_t)Banks << AVR32_USBB_PBK_OFFSET)    |
  61                                         Pipe_BytesToEPSizeMask(Size) |
  62                                         ((EndpointNumber & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
  63
  64         Pipe_SetInfiniteINRequests();
  65
  66         return Pipe_IsConfigured();
  67 #else
  68         for (uint8_t PNum = Number; PNum < PIPE_TOTAL_PIPES; PNum++)
  69         {
  70                 uint32_t UPCFG0Temp;
  71
  72                 Pipe_SelectPipe(PNum);
  73
  74                 if (PNum == Number)
  75                 {
  76                         UPCFG0Temp = (AVR32_USBB_ALLOC_MASK |
  77                                       ((uint32_t)Type  << AVR32_USBB_PTYPE_OFFSET)  |
  78                                       ((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
  79                                       ((uint32_t)Banks << AVR32_USBB_PBK_OFFSET)    |
  80                                       Pipe_BytesToEPSizeMask(Size) |
  81                                       ((EndpointNumber & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
  82                 }
  83                 else
  84                 {
  85                         UPCFG0Temp = (&AVR32_USBB.upcfg0)[PNum];
  86                 }
  87
  88                 if (!(UPCFG0Temp & AVR32_USBB_ALLOC_MASK))
  89                   continue;
  90
  91                 Pipe_DisablePipe();
  92                 (&AVR32_USBB.upcfg0)[PNum] &= ~AVR32_USBB_ALLOC_MASK;
  93
  94                 Pipe_EnablePipe();
  95                 (&AVR32_USBB.upcfg0)[PNum] = UPCFG0Temp;
  96
  97                 Pipe_SetInfiniteINRequests();
  98
  99                 if (!(Pipe_IsConfigured()))
 100                   return false;
 101         }
 102
 103         Pipe_SelectPipe(Number);
 104         return true;
 105 #endif
 106 }
 107
 108 void Pipe_ClearPipes(void)
 109 {
 110         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
 111         {
 112                 Pipe_SelectPipe(PNum);
 113                 (&AVR32_USBB.upcfg0)[PNum]    = 0;
 114                 (&AVR32_USBB.upcon0clr)[PNum] = -1;
 115                 USB_Pipe_FIFOPos[PNum]        = &AVR32_USBB_SLAVE[PNum * 0x10000];
 116                 Pipe_DisablePipe();
 117         }
 118 }
 119
 120 bool Pipe_IsEndpointBound(const uint8_t EndpointAddress)
 121 {
 122         uint8_t PrevPipeNumber = Pipe_GetCurrentPipe();
 123
 124         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
 125         {
 126                 Pipe_SelectPipe(PNum);
 127
 128                 if (!(Pipe_IsConfigured()))
 129                   continue;
 130
 131                 if (Pipe_GetBoundEndpointAddress() == EndpointAddress)
 132                   return true;
 133         }
 134
 135         Pipe_SelectPipe(PrevPipeNumber);
 136         return false;
 137 }
 138
 139 uint8_t Pipe_WaitUntilReady(void)
 140 {
 141         #if (USB_STREAM_TIMEOUT_MS < 0xFF)
 142         uint8_t  TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 143         #else
 144         uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 145         #endif
 146
 147         uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber();
 148
 149         for (;;)
 150         {
 151                 if (Pipe_GetPipeToken() == PIPE_TOKEN_IN)
 152                 {
 153                         if (Pipe_IsINReceived())
 154                           return PIPE_READYWAIT_NoError;
 155                 }
 156                 else
 157                 {
 158                         if (Pipe_IsOUTReady())
 159                           return PIPE_READYWAIT_NoError;
 160                 }
 161
 162                 if (Pipe_IsStalled())
 163                   return PIPE_READYWAIT_PipeStalled;
 164                 else if (USB_HostState == HOST_STATE_Unattached)
 165                   return PIPE_READYWAIT_DeviceDisconnected;
 166
 167                 uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber();
 168
 169                 if (CurrentFrameNumber != PreviousFrameNumber)
 170                 {
 171                         PreviousFrameNumber = CurrentFrameNumber;
 172
 173                         if (!(TimeoutMSRem--))
 174                           return PIPE_READYWAIT_Timeout;
 175                 }
 176         }
 177 }
 178
 179 #endif
 180