Diff: drv/usb/UsbEndpoint.cpp

Revision:

0:ac1725ba162c

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/drv/usb/UsbEndpoint.cpp	Tue Nov 09 20:54:15 2010 +0000
@@ -0,0 +1,394 @@
+
+/*
+Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+ 
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+ 
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+ 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include "UsbEndpoint.h"
+
+#include "UsbDevice.h"
+
+#include "usb_mem.h"
+
+#include "netCfg.h"
+#if NET_USB
+
+//#define __DEBUG
+#include "dbg/dbg.h"
+
+UsbEndpoint::UsbEndpoint( UsbDevice* pDevice, uint8_t ep, bool dir, UsbEndpointType type, uint16_t size, int addr /*= -1*/ ) : m_pDevice(pDevice), m_result(true), m_status((int)USBERR_OK), m_len(0), m_pBufStartPtr(NULL),
+m_pCbItem(NULL), m_pCbMeth(NULL), m_pNextEp(NULL)
+{
+  //Insert into Eps list
+  //FIXME: Assert that no USB interrupt is triggered meanwhile
+  if(m_pHeadEp)
+  {
+    m_pNextEp = m_pHeadEp;
+    m_pHeadEp = this;
+  }
+  else
+  {
+    m_pNextEp = NULL;
+    m_pHeadEp = this;
+  }  
+
+  m_pEd = (volatile HCED*)usb_get_ed();
+  
+  m_pTdHead = (volatile HCTD*)usb_get_td();
+  m_pTdTail = (volatile HCTD*)usb_get_td();
+  
+  //printf("\r\n--m_pEd = %p--\r\n", m_pEd);
+  DBG("m_pEd = %p\n", m_pEd);
+  DBG("m_pTdHead = %p\n", m_pTdHead);
+  DBG("m_pTdTail = %p\n", m_pTdTail);
+  
+  //Init Ed & Td
+  //printf("\r\n--Ep Init--\r\n");
+  memset((void*)m_pEd, 0, sizeof(HCED));
+  //printf("\r\n--Td Init--\r\n");
+
+  memset((void*)m_pTdHead, 0, sizeof(HCTD));
+  memset((void*)m_pTdTail, 0, sizeof(HCTD));
+  
+  if(addr == -1)
+    addr = pDevice->m_addr;
+  
+  //Setup Ed
+  //printf("\r\n--Ep Setup--\r\n");
+  m_pEd->Control =  addr        |      /* USB address           */
+  ((ep & 0x7F) << 7)            |      /* Endpoint address      */
+  (type!=USB_CONTROL?((dir?2:1) << 11):0)             |      /* direction : Out = 1, 2 = In */
+  (size << 16);     /* MaxPkt Size           */
+  
+  m_dir = dir;
+  m_setup = false;
+  m_type = type;
+  
+  m_pEd->TailTd = m_pEd->HeadTd = (uint32_t) m_pTdTail; //Empty TD list
+  
+  DBG("Before link\n");
+  
+  //printf("\r\n--Ep Reg--\r\n");
+  //Append Ed to Ed list
+  volatile HCED* prevEd;
+  switch( m_type )
+  {
+  case USB_CONTROL:
+    prevEd = (volatile HCED*) LPC_USB->HcControlHeadED;
+    break;
+  case USB_BULK:
+  default:
+    prevEd = (volatile HCED*) LPC_USB->HcBulkHeadED;
+    break;
+  }
+  
+  DBG("prevEd is %p\n", prevEd);
+  
+  if(prevEd)
+  {
+    DBG("prevEd set\n")
+  
+    while(prevEd->Next)
+    {
+      DBG("prevEd->Next = %08x\n", prevEd->Next);
+      prevEd = (volatile HCED*) prevEd->Next;
+    }
+    prevEd->Next = (uint32_t) m_pEd;
+  
+  }
+  else
+  {
+    switch( m_type )
+    {
+    case USB_CONTROL:
+      LPC_USB->HcControlHeadED = (uint32_t) m_pEd;
+      break;
+    case USB_BULK:
+    default:
+      LPC_USB->HcBulkHeadED = (uint32_t) m_pEd;
+      break;
+    }
+  }
+  
+  DBG("Ep init\n");
+}
+
+UsbEndpoint::~UsbEndpoint()
+{
+  //Remove from Eps list
+  //FIXME: Assert that no USB interrupt is triggered meanwhile
+  if(m_pHeadEp != this)
+  {
+    UsbEndpoint* prevEp = m_pHeadEp;
+    while(prevEp->m_pNextEp != this)
+      prevEp = prevEp->m_pNextEp;
+    prevEp->m_pNextEp = m_pNextEp;
+  }
+  else
+  {
+    m_pHeadEp = m_pNextEp;
+  }  
+  
+  m_pEd->Control |= ED_SKIP; //Skip this Ep in queue
+
+  //Remove from queue
+  volatile HCED* prevEd;
+  switch( m_type )
+  {
+  case USB_CONTROL:
+    prevEd = (volatile HCED*) LPC_USB->HcControlHeadED;
+    break;
+  case USB_BULK:
+  default:
+    prevEd = (volatile HCED*) LPC_USB->HcBulkHeadED;
+    break;
+  }
+  if( m_pEd == prevEd )
+  {
+    switch( m_type )
+    {
+    case USB_CONTROL:
+      LPC_USB->HcControlHeadED = m_pEd->Next;
+      break;
+    case USB_BULK:
+    default:
+      LPC_USB->HcBulkHeadED = m_pEd->Next;
+      break;
+    }
+    LPC_USB->HcBulkHeadED = m_pEd->Next;
+  }
+  else
+  {
+    while( prevEd->Next != (uint32_t) m_pEd )
+    {
+      prevEd = (volatile HCED*) prevEd->Next;
+    }
+    prevEd->Next = m_pEd->Next;
+  }
+  
+  //
+  usb_free_ed((volatile byte*)m_pEd);
+  
+  usb_free_td((volatile byte*)m_pTdHead);
+  usb_free_td((volatile byte*)m_pTdTail);
+}
+
+void UsbEndpoint::setNextToken(uint32_t token) //Only for control Eps
+{
+  switch(token)
+  {
+    case TD_SETUP:
+      m_dir = false;
+      m_setup = true;
+      break;
+    case TD_IN:
+      m_dir = true;
+      m_setup = false;
+      break;
+    case TD_OUT:
+      m_dir = false;
+      m_setup = false;
+      break;
+  }
+}
+
+UsbErr UsbEndpoint::transfer(volatile uint8_t* buf, uint32_t len)
+{
+  if(!m_result)
+    return USBERR_BUSY; //The previous trasnfer is not completed 
+    //FIXME: We should be able to queue the next transfer, still needs to be implemented
+  
+  if( !m_pDevice->connected() )
+    return USBERR_DISCONNECTED;
+  
+  m_result = false;
+  
+  volatile uint32_t token = (m_setup?TD_SETUP:(m_dir?TD_IN:TD_OUT));
+
+  volatile uint32_t td_toggle;
+  if (m_type == USB_CONTROL)
+  {
+    if (m_setup)
+    {
+      td_toggle = TD_TOGGLE_0;
+    }
+    else
+    {
+      td_toggle = TD_TOGGLE_1;
+    }
+  }
+  else
+  {
+    td_toggle = 0;
+  }
+
+  //Swap Tds
+  volatile HCTD* pTdSwap;
+  pTdSwap = m_pTdTail;
+  m_pTdTail = m_pTdHead;
+  m_pTdHead = pTdSwap;
+
+  m_pTdHead->Control = (TD_ROUNDING    |
+                       token           |
+                       TD_DELAY_INT(0) |//7
+                       td_toggle       |
+                       TD_CC);
+
+  m_pTdTail->Control = 0;
+  m_pTdHead->CurrBufPtr   = (uint32_t) buf;
+  m_pBufStartPtr = buf;
+  m_pTdTail->CurrBufPtr   = 0;
+  m_pTdHead->Next         = (uint32_t) m_pTdTail;
+  m_pTdTail->Next         = 0;
+  m_pTdHead->BufEnd       = (uint32_t)(buf + (len - 1));
+  m_pTdTail->BufEnd       = 0;
+  
+  m_pEd->HeadTd  = (uint32_t)m_pTdHead | ((m_pEd->HeadTd) & 0x00000002); //Carry bit
+  m_pEd->TailTd  = (uint32_t)m_pTdTail;
+  
+  //DBG("m_pEd->HeadTd = %08x\n", m_pEd->HeadTd);
+
+  if(m_type == USB_CONTROL)
+  {
+    LPC_USB->HcCommandStatus = LPC_USB->HcCommandStatus | OR_CMD_STATUS_CLF;
+    LPC_USB->HcControl       = LPC_USB->HcControl       | OR_CONTROL_CLE; //Enable control list
+  }
+  else //USB_BULK
+  {
+    LPC_USB->HcCommandStatus = LPC_USB->HcCommandStatus | OR_CMD_STATUS_BLF;
+    LPC_USB->HcControl       = LPC_USB->HcControl       | OR_CONTROL_BLE; //Enable bulk list
+  }
+  
+  //m_done = false;
+  m_len = len;
+
+  return USBERR_PROCESSING;
+ 
+}
+  
+int UsbEndpoint::status()
+{
+  if( !m_pDevice->connected() )
+  {
+    if(!m_result)
+      onCompletion();
+    m_result = true;
+    return (int)USBERR_DISCONNECTED;
+  }
+  else if( !m_result )
+  { 
+    return (int)USBERR_PROCESSING;
+  }
+  /*else if( m_done )
+  {
+    return (int)USBERR_OK;
+  }*/
+  else
+  {
+    return m_status;
+  }
+}
+
+void UsbEndpoint::updateAddr(int addr)
+{
+  DBG("m_pEd->Control = %08x\n", m_pEd->Control);
+  m_pEd->Control &= ~0x7F;
+  m_pEd->Control |= addr;
+  DBG("m_pEd->Control = %08x\n", m_pEd->Control);
+}
+
+void UsbEndpoint::updateSize(uint16_t size)
+{
+  DBG("m_pEd->Control = %08x\n", m_pEd->Control);
+  m_pEd->Control &= ~0x3FF0000;
+  m_pEd->Control |= (size << 16);
+  DBG("m_pEd->Control = %08x\n", m_pEd->Control);
+}
+
+#if 0 //For doc only
+template <class T>
+void UsbEndpoint::setOnCompletion( T* pCbItem, void (T::*pCbMeth)() )
+{
+  m_pCbItem = (CDummy*) pCbItem;
+  m_pCbMeth = (void (CDummy::*)()) pCbMeth;
+}
+#endif
+
+void UsbEndpoint::onCompletion()
+{
+  //DBG("Transfer completed\n");
+  if( m_pTdHead->Control >> 28  )
+  {
+    DBG("TD Failed with condition code %01x\n", m_pTdHead->Control >> 28 );
+    m_status = (int)USBERR_TDFAIL;
+  }
+  else if( m_pEd->HeadTd & 0x1 )
+  {
+    m_pEd->HeadTd = m_pEd->HeadTd & ~0x1;
+    DBG("\r\nHALTED!!\r\n");
+    m_status = (int)USBERR_HALTED;
+  }
+  else if( (m_pEd->HeadTd & ~0xF) == (uint32_t) m_pTdTail )
+  {
+    //Done
+    int len;
+    //DBG("m_pTdHead->CurrBufPtr = %08x, m_pBufStartPtr=%08x\n", m_pTdHead->CurrBufPtr, (uint32_t) m_pBufStartPtr);
+    if(m_pTdHead->CurrBufPtr)
+      len = m_pTdHead->CurrBufPtr - (uint32_t) m_pBufStartPtr;
+    else
+      len = m_len;
+    /*if(len == 0) //Packet transfered completely
+      len = m_len;*/
+    //m_done = true;
+    DBG("Transfered %d bytes\n", len);
+    m_status = len; 
+  }
+  else
+  {
+    DBG("Unknown error...\n");
+    m_status = (int)USBERR_ERROR;
+  }
+  m_result = true;
+  if(m_pCbItem && m_pCbMeth)
+    (m_pCbItem->*m_pCbMeth)();
+}
+
+void UsbEndpoint::sOnCompletion(uint32_t pTd)
+{
+  if(!m_pHeadEp)
+      return;
+  do
+  {
+    //DBG("sOnCompletion (pTd = %08x)\n", pTd);
+    UsbEndpoint* pEp = m_pHeadEp;  
+    do
+    {
+      if((uint32_t)pEp->m_pTdHead == pTd)
+      {
+        pEp->onCompletion();
+        break;
+      }
+    } while(pEp = pEp->m_pNextEp);
+  } while( pTd = (uint32_t)( ((HCTD*)pTd)->Next ) ); //Go around the Done queue
+}
+
+UsbEndpoint* UsbEndpoint::m_pHeadEp = NULL;
+
+#endif