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 #include "../../../../Common/Common.h"
  32 #if (ARCH == ARCH_UC3)
  33
  34 #define  __INCLUDE_FROM_USB_DRIVER
  35 #include "../USBMode.h"
  36
  37 #if defined(USB_CAN_BE_HOST)
  38
  39 #include "../Pipe.h"
  40
  41 uint8_t USB_Host_ControlPipeSize = PIPE_CONTROLPIPE_DEFAULT_SIZE;
  42
  43 volatile uint32_t USB_Pipe_SelectedPipe = PIPE_CONTROLPIPE;
  44 volatile uint8_t* USB_Pipe_FIFOPos[PIPE_TOTAL_PIPES];
  45
  46 bool Pipe_ConfigurePipe(const uint8_t Number,
  47                         const uint8_t Type,
  48                         const uint8_t Token,
  49                         const uint8_t EndpointNumber,
  50                         const uint16_t Size,
  51                         const uint8_t Banks)
  52 {
  53         USB_Pipe_FIFOPos[Number]     = &AVR32_USBB_SLAVE[Number * 0x10000];
  54
  55 #if defined(ORDERED_EP_CONFIG)
  56         Pipe_SelectPipe(Number);
  57         Pipe_EnablePipe();
  58
  59         (&AVR32_USBB.upcfg0)[Number] = 0;
  60         (&AVR32_USBB.upcfg0)[Number] = (AVR32_USBB_ALLOC_MASK |
  61                                         ((uint32_t)Type  << AVR32_USBB_PTYPE_OFFSET)  |
  62                                         ((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
  63                                         ((uint32_t)Banks << AVR32_USBB_PBK_OFFSET)    |
  64                                         Pipe_BytesToEPSizeMask(Size) |
  65                                         ((EndpointNumber & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
  66
  67         Pipe_SetInfiniteINRequests();
  68
  69         return Pipe_IsConfigured();
  70 #else
  71         for (uint8_t PNum = Number; PNum < PIPE_TOTAL_PIPES; PNum++)
  72         {
  73                 uint32_t UPCFG0Temp;
  74
  75                 Pipe_SelectPipe(PNum);
  76
  77                 if (PNum == Number)
  78                 {
  79                         UPCFG0Temp = (AVR32_USBB_ALLOC_MASK |
  80                                       ((uint32_t)Type  << AVR32_USBB_PTYPE_OFFSET)  |
  81                                       ((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
  82                                       ((uint32_t)Banks << AVR32_USBB_PBK_OFFSET)    |
  83                                       Pipe_BytesToEPSizeMask(Size) |
  84                                       ((EndpointNumber & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
  85                 }
  86                 else
  87                 {
  88                         UPCFG0Temp = (&AVR32_USBB.upcfg0)[PNum];
  89                 }
  90
  91                 if (!(UPCFG0Temp & AVR32_USBB_ALLOC_MASK))
  92                   continue;
  93
  94                 Pipe_DisablePipe();
  95                 (&AVR32_USBB.upcfg0)[PNum] &= ~AVR32_USBB_ALLOC_MASK;
  96
  97                 Pipe_EnablePipe();
  98                 (&AVR32_USBB.upcfg0)[PNum] = UPCFG0Temp;
  99
 100                 Pipe_SetInfiniteINRequests();
 101
 102                 if (!(Pipe_IsConfigured()))
 103                   return false;
 104         }
 105
 106         Pipe_SelectPipe(Number);
 107         return true;
 108 #endif
 109 }
 110
 111 void Pipe_ClearPipes(void)
 112 {
 113         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
 114         {
 115                 Pipe_SelectPipe(PNum);
 116                 (&AVR32_USBB.upcfg0)[PNum]    = 0;
 117                 (&AVR32_USBB.upcon0clr)[PNum] = -1;
 118                 USB_Pipe_FIFOPos[PNum]        = &AVR32_USBB_SLAVE[PNum * 0x10000];
 119                 Pipe_DisablePipe();
 120         }
 121 }
 122
 123 bool Pipe_IsEndpointBound(const uint8_t EndpointAddress)
 124 {
 125         uint8_t PrevPipeNumber = Pipe_GetCurrentPipe();
 126
 127         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
 128         {
 129                 Pipe_SelectPipe(PNum);
 130
 131                 if (!(Pipe_IsConfigured()))
 132                   continue;
 133
 134                 if (Pipe_GetBoundEndpointAddress() == EndpointAddress)
 135                   return true;
 136         }
 137
 138         Pipe_SelectPipe(PrevPipeNumber);
 139         return false;
 140 }
 141
 142 uint8_t Pipe_WaitUntilReady(void)
 143 {
 144         #if (USB_STREAM_TIMEOUT_MS < 0xFF)
 145         uint8_t  TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 146         #else
 147         uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 148         #endif
 149
 150         uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber();
 151
 152         for (;;)
 153         {
 154                 if (Pipe_GetPipeToken() == PIPE_TOKEN_IN)
 155                 {
 156                         if (Pipe_IsINReceived())
 157                           return PIPE_READYWAIT_NoError;
 158                 }
 159                 else
 160                 {
 161                         if (Pipe_IsOUTReady())
 162                           return PIPE_READYWAIT_NoError;
 163                 }
 164
 165                 if (Pipe_IsStalled())
 166                   return PIPE_READYWAIT_PipeStalled;
 167                 else if (USB_HostState == HOST_STATE_Unattached)
 168                   return PIPE_READYWAIT_DeviceDisconnected;
 169
 170                 uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber();
 171
 172                 if (CurrentFrameNumber != PreviousFrameNumber)
 173                 {
 174                         PreviousFrameNumber = CurrentFrameNumber;
 175
 176                         if (!(TimeoutMSRem--))
 177                           return PIPE_READYWAIT_Timeout;
 178                 }
 179         }
 180 }
 181
 182 #endif
 183
 184 #endif