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The FAST_STREAM_TRANSFERS compile time option has been removed due to lack of use and low cost/benefit ratio.

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Add GCC_FORCE_POINTER_ACCESS() macro use to the RingBuffer library header, to attempt to force GCC into producing more efficient code for manipulating the buffers.
This commit is contained in:
Dean Camera 2011-01-08 00:54:30 +00:00
parent 1c74fd78bd
commit d126146887
8 changed files with 17 additions and 173 deletions
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14
LUFA/Drivers/Misc/RingBuffer.h
View file

@ -126,10 +126,10 @@
*/
static inline void RingBuffer_InitBuffer(RingBuffer_t* Buffer, uint8_t* const DataPtr, const uint16_t Size)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
ATOMIC_BLOCK(ATOMIC_RESTORESTATE)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
{
Buffer->In = DataPtr;
Buffer->Out = DataPtr;
Buffer->Start = &DataPtr[0];
@ -203,9 +203,11 @@
* \param[in,out] Buffer Pointer to a ring buffer structure to insert into.
* \param[in] Data Data element to insert into the buffer.
*/
static inline void RingBuffer_Insert(RingBuffer_t* const Buffer,
static inline void RingBuffer_Insert(RingBuffer_t* Buffer,
const uint8_t Data)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
*Buffer->In = Data;
if (++Buffer->In == Buffer->End)
@ -227,8 +229,10 @@
*
* \return Next data element stored in the buffer.
*/
static inline uint8_t RingBuffer_Remove(RingBuffer_t* const Buffer)
static inline uint8_t RingBuffer_Remove(RingBuffer_t* Buffer)
{
GCC_FORCE_POINTER_ACCESS(Buffer);
uint8_t Data = *Buffer->Out;
if (++Buffer->Out == Buffer->End)

40
LUFA/Drivers/USB/HighLevel/EndpointStream.c
View file

@ -44,46 +44,6 @@ uint8_t Endpoint_Discard_Stream(uint16_t Length
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Endpoint_BytesInEndpoint() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Endpoint_IsReadWriteAllowed()))
{
Endpoint_ClearOUT();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return ENDPOINT_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
Endpoint_Discard_Byte();
case 7: Endpoint_Discard_Byte();
case 6: Endpoint_Discard_Byte();
case 5: Endpoint_Discard_Byte();
case 4: Endpoint_Discard_Byte();
case 3: Endpoint_Discard_Byte();
case 2: Endpoint_Discard_Byte();
case 1: Endpoint_Discard_Byte();
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Endpoint_IsReadWriteAllowed()))

40
LUFA/Drivers/USB/HighLevel/PipeStream.c
View file

@ -45,46 +45,6 @@ uint8_t Pipe_Discard_Stream(uint16_t Length
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Pipe_BytesInPipe() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Pipe_IsReadWriteAllowed()))
{
Pipe_ClearIN();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return PIPE_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
Pipe_Discard_Byte();
case 7: Pipe_Discard_Byte();
case 6: Pipe_Discard_Byte();
case 5: Pipe_Discard_Byte();
case 4: Pipe_Discard_Byte();
case 3: Pipe_Discard_Byte();
case 2: Pipe_Discard_Byte();
case 1: Pipe_Discard_Byte();
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Pipe_IsReadWriteAllowed()))

40
LUFA/Drivers/USB/HighLevel/Template/Template_Endpoint_RW.c
View file

@ -8,46 +8,6 @@ uint8_t TEMPLATE_FUNC_NAME (TEMPLATE_BUFFER_TYPE Buffer,
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Endpoint_BytesInEndpoint() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Endpoint_IsReadWriteAllowed()))
{
TEMPLATE_CLEAR_ENDPOINT();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return ENDPOINT_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Endpoint_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
TEMPLATE_TRANSFER_BYTE(DataStream);
case 7: TEMPLATE_TRANSFER_BYTE(DataStream);
case 6: TEMPLATE_TRANSFER_BYTE(DataStream);
case 5: TEMPLATE_TRANSFER_BYTE(DataStream);
case 4: TEMPLATE_TRANSFER_BYTE(DataStream);
case 3: TEMPLATE_TRANSFER_BYTE(DataStream);
case 2: TEMPLATE_TRANSFER_BYTE(DataStream);
case 1: TEMPLATE_TRANSFER_BYTE(DataStream);
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Endpoint_IsReadWriteAllowed()))

40
LUFA/Drivers/USB/HighLevel/Template/Template_Pipe_RW.c
View file

@ -10,46 +10,6 @@ uint8_t TEMPLATE_FUNC_NAME (TEMPLATE_BUFFER_TYPE Buffer,
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
#if defined(FAST_STREAM_TRANSFERS)
uint8_t BytesRemToAlignment = (Pipe_BytesInPipe() & 0x07);
if (Length >= 8)
{
Length -= BytesRemToAlignment;
switch (BytesRemToAlignment)
{
default:
do
{
if (!(Pipe_IsReadWriteAllowed()))
{
TEMPLATE_CLEAR_PIPE();
#if !defined(NO_STREAM_CALLBACKS)
if ((Callback != NULL) && (Callback() == STREAMCALLBACK_Abort))
return PIPE_RWSTREAM_CallbackAborted;
#endif
if ((ErrorCode = Pipe_WaitUntilReady()))
return ErrorCode;
}
Length -= 8;
TEMPLATE_TRANSFER_BYTE(DataStream);
case 7: TEMPLATE_TRANSFER_BYTE(DataStream);
case 6: TEMPLATE_TRANSFER_BYTE(DataStream);
case 5: TEMPLATE_TRANSFER_BYTE(DataStream);
case 4: TEMPLATE_TRANSFER_BYTE(DataStream);
case 3: TEMPLATE_TRANSFER_BYTE(DataStream);
case 2: TEMPLATE_TRANSFER_BYTE(DataStream);
case 1: TEMPLATE_TRANSFER_BYTE(DataStream);
} while (Length >= 8);
}
}
#endif
while (Length)
{
if (!(Pipe_IsReadWriteAllowed()))