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                                         ((EndpointNumber & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
  62
  63         Pipe_SetInfiniteINRequests();
  64
  65         return Pipe_IsConfigured();
  66 #else
  67         for (uint8_t PNum = Number; PNum < PIPE_TOTAL_PIPES; PNum++)
  68         {
  69                 uint32_t UPCFG0Temp;
  70
  71                 Pipe_SelectPipe(PNum);
  72
  73                 if (PNum == Number)
  74                 {
  75                         UPCFG0Temp = (AVR32_USBB_ALLOC_MASK |
  76                                       ((uint32_t)Type  << AVR32_USBB_PTYPE_OFFSET)  |
  77                                       ((uint32_t)Token << AVR32_USBB_PTOKEN_OFFSET) |
  78                                       ((uint32_t)Banks << AVR32_USBB_PBK_OFFSET)    |
  79                                       ((EndpointNumber & PIPE_EPNUM_MASK) << AVR32_USBB_PEPNUM_OFFSET));
  80                 }
  81                 else
  82                 {
  83                         UPCFG0Temp = (&AVR32_USBB.upcfg0)[PNum]
  84                 }
  85
  86                 if (!(UPCFG0Temp & AVR32_USBB_ALLOC_MASK))
  87                   continue;
  88
  89                 Pipe_DisablePipe();
  90                 (&AVR32_USBB.upcfg0)[PNum] &= ~AVR32_USBB_ALLOC_MASK;
  91
  92                 Pipe_EnablePipe();
  93                 (&AVR32_USBB.upcfg0)[PNum] = UPCFG0Temp;
  94
  95                 Pipe_SetInfiniteINRequests();
  96
  97                 if (!(Pipe_IsConfigured()))
  98                   return false;
  99         }
 100
 101         Pipe_SelectPipe(Number);
 102         return true;
 103 #endif
 104 }
 105
 106 void Pipe_ClearPipes(void)
 107 {
 108         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
 109         {
 110                 Pipe_SelectPipe(PNum);
 111                 (&AVR32_USBB.upcfg0)[PNum]    = 0;
 112                 (&AVR32_USBB.upcon0clr)[PNum] = -1;
 113                 USB_Pipe_FIFOPos[PNum]        = &AVR32_USBB_SLAVE[PNum * 0x10000];
 114                 Pipe_DisablePipe();
 115         }
 116 }
 117
 118 bool Pipe_IsEndpointBound(const uint8_t EndpointAddress)
 119 {
 120         uint8_t PrevPipeNumber = Pipe_GetCurrentPipe();
 121
 122         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
 123         {
 124                 Pipe_SelectPipe(PNum);
 125
 126                 if (!(Pipe_IsConfigured()))
 127                   continue;
 128
 129                 if (Pipe_GetBoundEndpointAddress() == EndpointAddress)
 130                   return true;
 131         }
 132
 133         Pipe_SelectPipe(PrevPipeNumber);
 134         return false;
 135 }
 136
 137 uint8_t Pipe_WaitUntilReady(void)
 138 {
 139         #if (USB_STREAM_TIMEOUT_MS < 0xFF)
 140         uint8_t  TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 141         #else
 142         uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 143         #endif
 144
 145         uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber();
 146
 147         for (;;)
 148         {
 149                 if (Pipe_GetPipeToken() == PIPE_TOKEN_IN)
 150                 {
 151                         if (Pipe_IsINReceived())
 152                           return PIPE_READYWAIT_NoError;
 153                 }
 154                 else
 155                 {
 156                         if (Pipe_IsOUTReady())
 157                           return PIPE_READYWAIT_NoError;
 158                 }
 159
 160                 if (Pipe_IsStalled())
 161                   return PIPE_READYWAIT_PipeStalled;
 162                 else if (USB_HostState == HOST_STATE_Unattached)
 163                   return PIPE_READYWAIT_DeviceDisconnected;
 164
 165                 uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber();
 166
 167                 if (CurrentFrameNumber != PreviousFrameNumber)
 168                 {
 169                         PreviousFrameNumber = CurrentFrameNumber;
 170
 171                         if (!(TimeoutMSRem--))
 172                           return PIPE_READYWAIT_Timeout;
 173                 }
 174         }
 175 }
 176
 177 #endif
 178