LUFA/Drivers/USB/Core/AVR8/Pipe_AVR8.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_AVR8)
  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 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         UPCFG1X = 0;
  55
  56         UPCFG0X = ((Type << EPTYPE0) | Token | ((EndpointNumber & PIPE_EPNUM_MASK) << PEPNUM0));
  57         UPCFG1X = ((1 << ALLOC) | Banks | Pipe_BytesToEPSizeMask(Size));
  58
  59         Pipe_SetInfiniteINRequests();
  60
  61         return Pipe_IsConfigured();
  62 #else
  63         for (uint8_t PNum = Number; PNum < PIPE_TOTAL_PIPES; PNum++)
  64         {
  65                 uint8_t UPCFG0XTemp;
  66                 uint8_t UPCFG1XTemp;
  67                 uint8_t UPCFG2XTemp;
  68                 uint8_t UPIENXTemp;
  69
  70                 Pipe_SelectPipe(PNum);
  71
  72                 if (PNum == Number)
  73                 {
  74                         UPCFG0XTemp = ((Type << EPTYPE0) | Token | ((EndpointNumber & PIPE_EPNUM_MASK) << PEPNUM0));
  75                         UPCFG1XTemp = ((1 << ALLOC) | Banks | Pipe_BytesToEPSizeMask(Size));
  76                         UPCFG2XTemp = 0;
  77                         UPIENXTemp  = 0;
  78                 }
  79                 else
  80                 {
  81                         UPCFG0XTemp = UPCFG0X;
  82                         UPCFG1XTemp = UPCFG1X;
  83                         UPCFG2XTemp = UPCFG2X;
  84                         UPIENXTemp  = UPIENX;
  85                 }
  86
  87                 if (!(UPCFG1XTemp & (1 << ALLOC)))
  88                   continue;
  89
  90                 Pipe_DisablePipe();
  91                 UPCFG1X &= ~(1 << ALLOC);
  92
  93                 Pipe_EnablePipe();
  94                 UPCFG0X = UPCFG0XTemp;
  95                 UPCFG1X = UPCFG1XTemp;
  96                 UPCFG2X = UPCFG2XTemp;
  97                 UPIENX  = UPIENXTemp;
  98
  99                 Pipe_SetInfiniteINRequests();
 100
 101                 if (!(Pipe_IsConfigured()))
 102                   return false;
 103         }
 104
 105         Pipe_SelectPipe(Number);
 106         return true;
 107 #endif
 108 }
 109
 110 void Pipe_ClearPipes(void)
 111 {
 112         UPINT = 0;
 113
 114         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
 115         {
 116                 Pipe_SelectPipe(PNum);
 117                 UPIENX  = 0;
 118                 UPINTX  = 0;
 119                 UPCFG1X = 0;
 120                 Pipe_DisablePipe();
 121         }
 122 }
 123
 124 bool Pipe_IsEndpointBound(const uint8_t EndpointAddress)
 125 {
 126         uint8_t PrevPipeNumber = Pipe_GetCurrentPipe();
 127
 128         for (uint8_t PNum = 0; PNum < PIPE_TOTAL_PIPES; PNum++)
 129         {
 130                 Pipe_SelectPipe(PNum);
 131
 132                 if (!(Pipe_IsConfigured()))
 133                   continue;
 134
 135                 if (Pipe_GetBoundEndpointAddress() == EndpointAddress)
 136                   return true;
 137         }
 138
 139         Pipe_SelectPipe(PrevPipeNumber);
 140         return false;
 141 }
 142
 143 uint8_t Pipe_WaitUntilReady(void)
 144 {
 145         #if (USB_STREAM_TIMEOUT_MS < 0xFF)
 146         uint8_t  TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 147         #else
 148         uint16_t TimeoutMSRem = USB_STREAM_TIMEOUT_MS;
 149         #endif
 150
 151         uint16_t PreviousFrameNumber = USB_Host_GetFrameNumber();
 152
 153         for (;;)
 154         {
 155                 if (Pipe_GetPipeToken() == PIPE_TOKEN_IN)
 156                 {
 157                         if (Pipe_IsINReceived())
 158                           return PIPE_READYWAIT_NoError;
 159                 }
 160                 else
 161                 {
 162                         if (Pipe_IsOUTReady())
 163                           return PIPE_READYWAIT_NoError;
 164                 }
 165
 166                 if (Pipe_IsStalled())
 167                   return PIPE_READYWAIT_PipeStalled;
 168                 else if (USB_HostState == HOST_STATE_Unattached)
 169                   return PIPE_READYWAIT_DeviceDisconnected;
 170
 171                 uint16_t CurrentFrameNumber = USB_Host_GetFrameNumber();
 172
 173                 if (CurrentFrameNumber != PreviousFrameNumber)
 174                 {
 175                         PreviousFrameNumber = CurrentFrameNumber;
 176
 177                         if (!(TimeoutMSRem--))
 178                           return PIPE_READYWAIT_Timeout;
 179                 }
 180         }
 181 }
 182
 183 #endif
 184
 185 #endif