From b219b3f7329d71cdd27355c8c64e65416a0096ce Mon Sep 17 00:00:00 2001 From: Nicolas Palix Date: Thu, 30 Jul 2009 17:37:23 +0200 Subject: [PATCH] Staging: hv: Replace typedef SG_BUFFER_LIST by struct scatterlist typedef SG_BUFFER_LIST is removed and its uses are replaced by the use of struct scatterlist. Signed-off-by: Nicolas Palix Cc: Bill Pemberton Cc: Hank Janssen Signed-off-by: Greg Kroah-Hartman --- drivers/staging/hv/Channel.c | 42 ++++++++++++--------------------- drivers/staging/hv/RingBuffer.c | 27 +++++++++++---------- drivers/staging/hv/RingBuffer.h | 13 ++++------ 3 files changed, 34 insertions(+), 48 deletions(-) diff --git a/drivers/staging/hv/Channel.c b/drivers/staging/hv/Channel.c index be9770e6b098..2938e588de90 100644 --- a/drivers/staging/hv/Channel.c +++ b/drivers/staging/hv/Channel.c @@ -773,7 +773,7 @@ VmbusChannelSendPacket( VMPACKET_DESCRIPTOR desc; u32 packetLen = sizeof(VMPACKET_DESCRIPTOR) + BufferLen; u32 packetLenAligned = ALIGN_UP(packetLen, sizeof(u64)); - SG_BUFFER_LIST bufferList[3]; + struct scatterlist bufferList[3]; u64 alignedData=0; DPRINT_ENTER(VMBUS); @@ -790,14 +790,10 @@ VmbusChannelSendPacket( desc.Length8 = (u16)(packetLenAligned >> 3); desc.TransactionId = RequestId; - bufferList[0].Data = &desc; - bufferList[0].Length = sizeof(VMPACKET_DESCRIPTOR); - - bufferList[1].Data = Buffer; - bufferList[1].Length = BufferLen; - - bufferList[2].Data = &alignedData; - bufferList[2].Length = packetLenAligned - packetLen; + sg_init_table(bufferList,3); + sg_set_buf(&bufferList[0], &desc, sizeof(VMPACKET_DESCRIPTOR)); + sg_set_buf(&bufferList[1], Buffer, BufferLen); + sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen); ret = RingBufferWrite( &Channel->Outbound, @@ -841,7 +837,7 @@ VmbusChannelSendPacketPageBuffer( u32 descSize; u32 packetLen; u32 packetLenAligned; - SG_BUFFER_LIST bufferList[3]; + struct scatterlist bufferList[3]; u64 alignedData=0; DPRINT_ENTER(VMBUS); @@ -872,14 +868,10 @@ VmbusChannelSendPacketPageBuffer( desc.Range[i].Pfn = PageBuffers[i].Pfn; } - bufferList[0].Data = &desc; - bufferList[0].Length = descSize; - - bufferList[1].Data = Buffer; - bufferList[1].Length = BufferLen; - - bufferList[2].Data = &alignedData; - bufferList[2].Length = packetLenAligned - packetLen; + sg_init_table(bufferList,3); + sg_set_buf(&bufferList[0], &desc, descSize); + sg_set_buf(&bufferList[1], Buffer, BufferLen); + sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen); ret = RingBufferWrite( &Channel->Outbound, @@ -922,7 +914,7 @@ VmbusChannelSendPacketMultiPageBuffer( u32 descSize; u32 packetLen; u32 packetLenAligned; - SG_BUFFER_LIST bufferList[3]; + struct scatterlist bufferList[3]; u64 alignedData=0; u32 PfnCount = NUM_PAGES_SPANNED(MultiPageBuffer->Offset, MultiPageBuffer->Length); @@ -955,14 +947,10 @@ VmbusChannelSendPacketMultiPageBuffer( memcpy(desc.Range.PfnArray, MultiPageBuffer->PfnArray, PfnCount*sizeof(u64)); - bufferList[0].Data = &desc; - bufferList[0].Length = descSize; - - bufferList[1].Data = Buffer; - bufferList[1].Length = BufferLen; - - bufferList[2].Data = &alignedData; - bufferList[2].Length = packetLenAligned - packetLen; + sg_init_table(bufferList,3); + sg_set_buf(&bufferList[0], &desc, descSize); + sg_set_buf(&bufferList[1], Buffer, BufferLen); + sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen); ret = RingBufferWrite( &Channel->Outbound, diff --git a/drivers/staging/hv/RingBuffer.c b/drivers/staging/hv/RingBuffer.c index d338ce25e2b0..571f9db4160e 100644 --- a/drivers/staging/hv/RingBuffer.c +++ b/drivers/staging/hv/RingBuffer.c @@ -347,9 +347,9 @@ Description: --*/ static int RingBufferWrite( - RING_BUFFER_INFO* OutRingInfo, - SG_BUFFER_LIST SgBuffers[], - u32 SgBufferCount + RING_BUFFER_INFO *OutRingInfo, + struct scatterlist *sglist, + u32 sgcount ) { int i=0; @@ -357,15 +357,16 @@ RingBufferWrite( u32 byteAvailToRead; u32 totalBytesToWrite=0; + struct scatterlist *sg; volatile u32 nextWriteLocation; u64 prevIndices=0; unsigned long flags; DPRINT_ENTER(VMBUS); - for (i=0; i < SgBufferCount; i++) + for_each_sg(sglist, sg, sgcount, i) { - totalBytesToWrite += SgBuffers[i].Length; + totalBytesToWrite += sg->length; } totalBytesToWrite += sizeof(u64); @@ -394,21 +395,21 @@ RingBufferWrite( /* Write to the ring buffer */ nextWriteLocation = GetNextWriteLocation(OutRingInfo); - for (i=0; i < SgBufferCount; i++) + for_each_sg(sglist, sg, sgcount, i) { - nextWriteLocation = CopyToRingBuffer(OutRingInfo, - nextWriteLocation, - SgBuffers[i].Data, - SgBuffers[i].Length); + nextWriteLocation = CopyToRingBuffer(OutRingInfo, + nextWriteLocation, + sg_virt(sg), + sg->length); } /* Set previous packet start */ prevIndices = GetRingBufferIndices(OutRingInfo); nextWriteLocation = CopyToRingBuffer(OutRingInfo, - nextWriteLocation, - &prevIndices, - sizeof(u64)); + nextWriteLocation, + &prevIndices, + sizeof(u64)); /* Make sure we flush all writes before updating the writeIndex */ mb(); diff --git a/drivers/staging/hv/RingBuffer.h b/drivers/staging/hv/RingBuffer.h index a0b6e0e9f879..16586148bef9 100644 --- a/drivers/staging/hv/RingBuffer.h +++ b/drivers/staging/hv/RingBuffer.h @@ -25,12 +25,9 @@ #ifndef _RING_BUFFER_H_ #define _RING_BUFFER_H_ -#include "include/osd.h" +#include -typedef struct _SG_BUFFER_LIST { - void * Data; - u32 Length; -} SG_BUFFER_LIST; +#include "include/osd.h" typedef struct _RING_BUFFER { volatile u32 WriteIndex; /* Offset in bytes from the start of ring data below */ @@ -83,9 +80,9 @@ RingBufferCleanup( static int RingBufferWrite( - RING_BUFFER_INFO *RingInfo, - SG_BUFFER_LIST SgBuffers[], - u32 SgBufferCount + RING_BUFFER_INFO *RingInfo, + struct scatterlist *sglist, + u32 sgcount ); static int -- 2.30.2