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

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2011.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2011  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_SelectedPipe = PIPE_CONTROLPIPE;
  41 volatile uint8_t* USB_PipeFIFOPos[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 #if defined(ORDERED_EP_CONFIG)
  51         Pipe_SelectPipe(Number);
  52         Pipe_EnablePipe();
  53
  54         (&AVR32_USBB.upcfg0)[Number] = 0;
  55         (&AVR32_USBB.upcfg0)[Number] = (AVR32_USBB_ALLOC_MASK |
  56                                         ((uint32_t)Type  << AVR32_USBB_PTYPE_OFFSET)  |
  57                                         ((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
  58                                         ((uint32_t)Banks << AVR32_USBB_PBK_OFFSET)    |
  59                                         ((EndpointNumber & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
  60         USB_PipeFIFOPos[Number]      = &AVR32_USBB_SLAVE[Number * 0x10000];
  61
  62         Pipe_SetInfiniteINRequests();
  63
  64         return Pipe_IsConfigured();
  65 #else
  66         for (uint8_t PNum = Number; PNum < PIPE_TOTAL_PIPES; PNum++)
  67         {
  68                 uint8_t UPCFG0Temp;
  69
  70                 Pipe_SelectPipe(PNum);
  71
  72                 if (PNum == Number)
  73                 {
  74                         UPCFG0Temp = (AVR32_USBB_ALLOC_MASK |
  75                                       ((uint32_t)Type  << AVR32_USBB_PTYPE_OFFSET)  |
  76                                       ((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
  77                                       ((uint32_t)Banks << AVR32_USBB_PBK_OFFSET)    |
  78                                       ((EndpointNumber & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
  79                 }
  80                 else
  81                 {
  82                         UPCFG0Temp = (&AVR32_USBB.upcfg0)[PNum]
  83                 }
  84
  85                 if (!(UPCFG0Temp & AVR32_USBB_ALLOC_MASK))
  86                   continue;
  87
  88                 Pipe_DisablePipe();
  89                 (&AVR32_USBB.upcfg0)[PNum] &= ~AVR32_USBB_ALLOC_MASK;
  90
  91                 Pipe_EnablePipe();
  92                 (&AVR32_USBB.upcfg0)[PNum] = UPCFG0Temp;
  93
  94                 Pipe_SetInfiniteINRequests();
  95
  96                 if (!(Pipe_IsConfigured()))
  97                   return false;
  98         }
  99
 100         Pipe_SelectPipe(Number);
 101         return true;
 102 #endif
 103 }
 104
 105 void Pipe_ClearPipes(void)
 106 {
 107         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
 108         {
 109                 Pipe_SelectPipe(PNum);
 110                 (&AVR32_USBB.upcfg0)[PNum]    = 0;
 111                 (&AVR32_USBB.upcon0clr)[PNum] = -1;
 112                 USB_PipeFIFOPos[PNum]         = &AVR32_USBB_SLAVE[PNum * 0x10000];
 113                 Pipe_DisablePipe();
 114         }
 115 }
 116
 117 bool Pipe_IsEndpointBound(const uint8_t EndpointAddress)
 118 {
 119         uint8_t PrevPipeNumber = Pipe_GetCurrentPipe();
 120
 121         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
 122         {
 123                 Pipe_SelectPipe(PNum);
 124
 125                 if (!(Pipe_IsConfigured()))
 126                   continue;
 127
 128                 if (Pipe_GetBoundEndpointAddress() == EndpointAddress)
 129                   return true;
 130         }
 131
 132         Pipe_SelectPipe(PrevPipeNumber);
 133         return false;
 134 }
 135
 136 uint8_t Pipe_WaitUntilReady(void)
 137 {
 138         #if (USB_STREAM_TIMEOUT_MS < 0xFF)
 139         uint8_t  TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 140         #else
 141         uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 142         #endif
 143
 144         uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber();
 145
 146         for (;;)
 147         {
 148                 if (Pipe_GetPipeToken() == PIPE_TOKEN_IN)
 149                 {
 150                         if (Pipe_IsINReceived())
 151                           return PIPE_READYWAIT_NoError;
 152                 }
 153                 else
 154                 {
 155                         if (Pipe_IsOUTReady())
 156                           return PIPE_READYWAIT_NoError;
 157                 }
 158
 159                 if (Pipe_IsStalled())
 160                   return PIPE_READYWAIT_PipeStalled;
 161                 else if (USB_HostState == HOST_STATE_Unattached)
 162                   return PIPE_READYWAIT_DeviceDisconnected;
 163
 164                 uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber();
 165
 166                 if (CurrentFrameNumber != PreviousFrameNumber)
 167                 {
 168                         PreviousFrameNumber = CurrentFrameNumber;
 169
 170                         if (!(TimeoutMSRem--))
 171                           return PIPE_READYWAIT_Timeout;
 172                 }
 173         }
 174 }
 175
 176 #endif
 177