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Staging: hv: Replace typedef SG_BUFFER_LIST by struct scatterlist

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typedef SG_BUFFER_LIST is removed and its uses are replaced by the use of
struct scatterlist.

Signed-off-by: Nicolas Palix <npalix@diku.dk>
Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Nicolas Palix 2009-07-30 17:37:23 +02:00 committed by Greg Kroah-Hartman
parent 45dcfb3809
commit b219b3f732
3 changed files with 34 additions and 48 deletions
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42
drivers/staging/hv/Channel.c
View File

@ -773,7 +773,7 @@ VmbusChannelSendPacket(
VMPACKET_DESCRIPTOR desc; VMPACKET_DESCRIPTOR desc;
u32 packetLen = sizeof(VMPACKET_DESCRIPTOR) + BufferLen; u32 packetLen = sizeof(VMPACKET_DESCRIPTOR) + BufferLen;
u32 packetLenAligned = ALIGN_UP(packetLen, sizeof(u64)); u32 packetLenAligned = ALIGN_UP(packetLen, sizeof(u64));
SG_BUFFER_LIST bufferList[3]; struct scatterlist bufferList[3];
u64 alignedData=0; u64 alignedData=0;
DPRINT_ENTER(VMBUS); DPRINT_ENTER(VMBUS);
@ -790,14 +790,10 @@ VmbusChannelSendPacket(
desc.Length8 = (u16)(packetLenAligned >> 3); desc.Length8 = (u16)(packetLenAligned >> 3);
desc.TransactionId = RequestId; desc.TransactionId = RequestId;
bufferList[0].Data = &desc; sg_init_table(bufferList,3);
bufferList[0].Length = sizeof(VMPACKET_DESCRIPTOR); sg_set_buf(&bufferList[0], &desc, sizeof(VMPACKET_DESCRIPTOR));
sg_set_buf(&bufferList[1], Buffer, BufferLen);
bufferList[1].Data = Buffer; sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen);
bufferList[1].Length = BufferLen;
bufferList[2].Data = &alignedData;
bufferList[2].Length = packetLenAligned - packetLen;
ret = RingBufferWrite( ret = RingBufferWrite(
&Channel->Outbound, &Channel->Outbound,
@ -841,7 +837,7 @@ VmbusChannelSendPacketPageBuffer(
u32 descSize; u32 descSize;
u32 packetLen; u32 packetLen;
u32 packetLenAligned; u32 packetLenAligned;
SG_BUFFER_LIST bufferList[3]; struct scatterlist bufferList[3];
u64 alignedData=0; u64 alignedData=0;
DPRINT_ENTER(VMBUS); DPRINT_ENTER(VMBUS);
@ -872,14 +868,10 @@ VmbusChannelSendPacketPageBuffer(
desc.Range[i].Pfn = PageBuffers[i].Pfn; desc.Range[i].Pfn = PageBuffers[i].Pfn;
} }
bufferList[0].Data = &desc; sg_init_table(bufferList,3);
bufferList[0].Length = descSize; sg_set_buf(&bufferList[0], &desc, descSize);
sg_set_buf(&bufferList[1], Buffer, BufferLen);
bufferList[1].Data = Buffer; sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen);
bufferList[1].Length = BufferLen;
bufferList[2].Data = &alignedData;
bufferList[2].Length = packetLenAligned - packetLen;
ret = RingBufferWrite( ret = RingBufferWrite(
&Channel->Outbound, &Channel->Outbound,
@ -922,7 +914,7 @@ VmbusChannelSendPacketMultiPageBuffer(
u32 descSize; u32 descSize;
u32 packetLen; u32 packetLen;
u32 packetLenAligned; u32 packetLenAligned;
SG_BUFFER_LIST bufferList[3]; struct scatterlist bufferList[3];
u64 alignedData=0; u64 alignedData=0;
u32 PfnCount = NUM_PAGES_SPANNED(MultiPageBuffer->Offset, MultiPageBuffer->Length); u32 PfnCount = NUM_PAGES_SPANNED(MultiPageBuffer->Offset, MultiPageBuffer->Length);
@ -955,14 +947,10 @@ VmbusChannelSendPacketMultiPageBuffer(
memcpy(desc.Range.PfnArray, MultiPageBuffer->PfnArray, PfnCount*sizeof(u64)); memcpy(desc.Range.PfnArray, MultiPageBuffer->PfnArray, PfnCount*sizeof(u64));
bufferList[0].Data = &desc; sg_init_table(bufferList,3);
bufferList[0].Length = descSize; sg_set_buf(&bufferList[0], &desc, descSize);
sg_set_buf(&bufferList[1], Buffer, BufferLen);
bufferList[1].Data = Buffer; sg_set_buf(&bufferList[2], &alignedData, packetLenAligned - packetLen);
bufferList[1].Length = BufferLen;
bufferList[2].Data = &alignedData;
bufferList[2].Length = packetLenAligned - packetLen;
ret = RingBufferWrite( ret = RingBufferWrite(
&Channel->Outbound, &Channel->Outbound,

27
drivers/staging/hv/RingBuffer.c
View File

@ -347,9 +347,9 @@ Description:
--*/ --*/
static int static int
RingBufferWrite( RingBufferWrite(
RING_BUFFER_INFO* OutRingInfo, RING_BUFFER_INFO *OutRingInfo,
SG_BUFFER_LIST SgBuffers[], struct scatterlist *sglist,
u32 SgBufferCount u32 sgcount
) )
{ {
int i=0; int i=0;
@ -357,15 +357,16 @@ RingBufferWrite(
u32 byteAvailToRead; u32 byteAvailToRead;
u32 totalBytesToWrite=0; u32 totalBytesToWrite=0;
struct scatterlist *sg;
volatile u32 nextWriteLocation; volatile u32 nextWriteLocation;
u64 prevIndices=0; u64 prevIndices=0;
unsigned long flags; unsigned long flags;
DPRINT_ENTER(VMBUS); 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); totalBytesToWrite += sizeof(u64);
@ -394,21 +395,21 @@ RingBufferWrite(
/* Write to the ring buffer */ /* Write to the ring buffer */
nextWriteLocation = GetNextWriteLocation(OutRingInfo); nextWriteLocation = GetNextWriteLocation(OutRingInfo);
for (i=0; i < SgBufferCount; i++) for_each_sg(sglist, sg, sgcount, i)
{ {
nextWriteLocation = CopyToRingBuffer(OutRingInfo, nextWriteLocation = CopyToRingBuffer(OutRingInfo,
nextWriteLocation, nextWriteLocation,
SgBuffers[i].Data, sg_virt(sg),
SgBuffers[i].Length); sg->length);
} }
/* Set previous packet start */ /* Set previous packet start */
prevIndices = GetRingBufferIndices(OutRingInfo); prevIndices = GetRingBufferIndices(OutRingInfo);
nextWriteLocation = CopyToRingBuffer(OutRingInfo, nextWriteLocation = CopyToRingBuffer(OutRingInfo,
nextWriteLocation, nextWriteLocation,
&prevIndices, &prevIndices,
sizeof(u64)); sizeof(u64));
/* Make sure we flush all writes before updating the writeIndex */ /* Make sure we flush all writes before updating the writeIndex */
mb(); mb();

13
drivers/staging/hv/RingBuffer.h
View File

@ -25,12 +25,9 @@
#ifndef _RING_BUFFER_H_ #ifndef _RING_BUFFER_H_
#define _RING_BUFFER_H_ #define _RING_BUFFER_H_
#include "include/osd.h" #include <linux/scatterlist.h>
typedef struct _SG_BUFFER_LIST { #include "include/osd.h"
void * Data;
u32 Length;
} SG_BUFFER_LIST;
typedef struct _RING_BUFFER { typedef struct _RING_BUFFER {
volatile u32 WriteIndex; /* Offset in bytes from the start of ring data below */ volatile u32 WriteIndex; /* Offset in bytes from the start of ring data below */
@ -83,9 +80,9 @@ RingBufferCleanup(
static int static int
RingBufferWrite( RingBufferWrite(
RING_BUFFER_INFO *RingInfo, RING_BUFFER_INFO *RingInfo,
SG_BUFFER_LIST SgBuffers[], struct scatterlist *sglist,
u32 SgBufferCount u32 sgcount
); );
static int static int