diff options
Diffstat (limited to 'usb/host/ohci/ohci.c')
| -rw-r--r-- | usb/host/ohci/ohci.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/usb/host/ohci/ohci.c b/usb/host/ohci/ohci.c new file mode 100644 index 0000000..d125559 --- /dev/null +++ b/usb/host/ohci/ohci.c @@ -0,0 +1,124 @@ +/* ----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+/// OHCI ED, TD HCCA definitions + inlined functions
+
+
+#include "ohci.h"
+
+
+//------------------------------------------------------------------------------
+/// Init a pre-allocated endpoint descriptor
+/// TD must be aligned on a 16 bytes boundary
+//------------------------------------------------------------------------------
+void OHCI_CreateEd( unsigned int EDAddr,
+ unsigned int MaxPacket,
+ unsigned int TDFormat,
+ unsigned int Skip,
+ unsigned int Speed,
+ unsigned int Direction,
+ unsigned int EndPt,
+ unsigned int FuncAddress,
+ unsigned int TDQTailPntr,
+ unsigned int TDQHeadPntr,
+ unsigned int ToggleCarry,
+ unsigned int NextED )
+{
+ OHCIEndpointDescriptor *pED = (OHCIEndpointDescriptor*) EDAddr;
+
+ pED->Control = (MaxPacket << 16) | (TDFormat << 15) |
+ (Skip << 14) | (Speed << 13) | (Direction << 11) |
+ (EndPt << 7) | FuncAddress;
+ pED->TailP = (TDQTailPntr & 0xFFFFFFF0);
+ pED->HeadP = (TDQHeadPntr & 0xFFFFFFF0) | (ToggleCarry << 1);
+ pED->NextEd = (NextED & 0xFFFFFFF0);
+}
+
+//------------------------------------------------------------------------------
+/// Init a pre-allocated transfer descriptor
+/// TD must be aligned on a 16 bytes boundary
+//------------------------------------------------------------------------------
+void OHCI_CreateGenTd( unsigned int GenTdAddr,
+ unsigned int DataToggle,
+ unsigned int DelayInterrupt,
+ unsigned int Direction,
+ unsigned int BufRnding,
+ unsigned int CurBufPtr,
+ unsigned int NextTD,
+ unsigned int BuffLen)
+{
+ OHCITransferDescriptor *pTD = (OHCITransferDescriptor*) GenTdAddr;
+
+ pTD->Control = (DataToggle << 24) | (DelayInterrupt << 21)
+ | (Direction << 19) | (BufRnding << 18);
+ pTD->CBP = CurBufPtr;
+ pTD->NextTD = (NextTD & 0xFFFFFFF0);
+ pTD->BE = (BuffLen) ? (CurBufPtr + BuffLen - 1) : CurBufPtr;
+}
+
+//------------------------------------------------------------------------------
+/// Init a pre-allocated periodic transfer descriptor
+/// TD must be aligned on a 16 bytes boundary
+//------------------------------------------------------------------------------
+void OHCI_CreateGenITd( unsigned int GenTdAddr,
+ unsigned int CondCode,
+ unsigned int FrameCount,
+ unsigned int DelayInterrupt,
+ unsigned int StartFrame,
+ unsigned int BuffPage0,
+ unsigned int NextTD,
+ unsigned int BufEnd,
+ unsigned int PswOffset0,
+ unsigned int PswOffset1,
+ unsigned int PswOffset2,
+ unsigned int PswOffset3,
+ unsigned int PswOffset4,
+ unsigned int PswOffset5,
+ unsigned int PswOffset6,
+ unsigned int PswOffset7)
+{
+ OHCIPeriodicTransferDescriptor *pITD = (OHCIPeriodicTransferDescriptor*) GenTdAddr;
+
+ pITD->Control = (CondCode << 28) | (FrameCount << 24)
+ | (DelayInterrupt << 21) | StartFrame;
+ pITD->BP0 = (BuffPage0 << 12);
+ pITD->NextTD = (NextTD << 4);
+ pITD->BE = BufEnd;
+ pITD->PSW0 = PswOffset0;
+ pITD->PSW1 = PswOffset1;
+ pITD->PSW2 = PswOffset2;
+ pITD->PSW3 = PswOffset3;
+ pITD->PSW4 = PswOffset4;
+ pITD->PSW5 = PswOffset5;
+ pITD->PSW6 = PswOffset6;
+ pITD->PSW7 = PswOffset7;
+
+}
+
+
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