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path: root/drivers/staging/hv/ring_buffer.c
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Diffstat (limited to 'drivers/staging/hv/ring_buffer.c')
-rw-r--r--drivers/staging/hv/ring_buffer.c71
1 files changed, 32 insertions, 39 deletions
diff --git a/drivers/staging/hv/ring_buffer.c b/drivers/staging/hv/ring_buffer.c
index ae2a10e24d92..17bc7626f70a 100644
--- a/drivers/staging/hv/ring_buffer.c
+++ b/drivers/staging/hv/ring_buffer.c
@@ -46,7 +46,7 @@ Description:
--*/
static inline void
-GetRingBufferAvailBytes(RING_BUFFER_INFO *rbi, u32 *read, u32 *write)
+GetRingBufferAvailBytes(struct hv_ring_buffer_info *rbi, u32 *read, u32 *write)
{
u32 read_loc, write_loc;
@@ -68,7 +68,7 @@ Description:
--*/
static inline u32
-GetNextWriteLocation(RING_BUFFER_INFO *RingInfo)
+GetNextWriteLocation(struct hv_ring_buffer_info *RingInfo)
{
u32 next = RingInfo->RingBuffer->WriteIndex;
@@ -87,7 +87,8 @@ Description:
--*/
static inline void
-SetNextWriteLocation(RING_BUFFER_INFO *RingInfo, u32 NextWriteLocation)
+SetNextWriteLocation(struct hv_ring_buffer_info *RingInfo,
+ u32 NextWriteLocation)
{
RingInfo->RingBuffer->WriteIndex = NextWriteLocation;
}
@@ -102,7 +103,7 @@ Description:
--*/
static inline u32
-GetNextReadLocation(RING_BUFFER_INFO *RingInfo)
+GetNextReadLocation(struct hv_ring_buffer_info *RingInfo)
{
u32 next = RingInfo->RingBuffer->ReadIndex;
@@ -122,7 +123,7 @@ Description:
--*/
static inline u32
-GetNextReadLocationWithOffset(RING_BUFFER_INFO *RingInfo, u32 Offset)
+GetNextReadLocationWithOffset(struct hv_ring_buffer_info *RingInfo, u32 Offset)
{
u32 next = RingInfo->RingBuffer->ReadIndex;
@@ -143,7 +144,7 @@ Description:
--*/
static inline void
-SetNextReadLocation(RING_BUFFER_INFO *RingInfo, u32 NextReadLocation)
+SetNextReadLocation(struct hv_ring_buffer_info *RingInfo, u32 NextReadLocation)
{
RingInfo->RingBuffer->ReadIndex = NextReadLocation;
}
@@ -159,7 +160,7 @@ Description:
--*/
static inline void *
-GetRingBuffer(RING_BUFFER_INFO *RingInfo)
+GetRingBuffer(struct hv_ring_buffer_info *RingInfo)
{
return (void *)RingInfo->RingBuffer->Buffer;
}
@@ -175,7 +176,7 @@ Description:
--*/
static inline u32
-GetRingBufferSize(RING_BUFFER_INFO *RingInfo)
+GetRingBufferSize(struct hv_ring_buffer_info *RingInfo)
{
return RingInfo->RingDataSize;
}
@@ -190,7 +191,7 @@ Description:
--*/
static inline u64
-GetRingBufferIndices(RING_BUFFER_INFO *RingInfo)
+GetRingBufferIndices(struct hv_ring_buffer_info *RingInfo)
{
return ((u64)RingInfo->RingBuffer->WriteIndex << 32)
|| RingInfo->RingBuffer->ReadIndex;
@@ -206,7 +207,7 @@ Description:
Dump out to console the ring buffer info
--*/
-void DumpRingInfo(RING_BUFFER_INFO *RingInfo, char *Prefix)
+void DumpRingInfo(struct hv_ring_buffer_info *RingInfo, char *Prefix)
{
u32 bytesAvailToWrite;
u32 bytesAvailToRead;
@@ -233,14 +234,14 @@ void DumpRingInfo(RING_BUFFER_INFO *RingInfo, char *Prefix)
static u32
CopyToRingBuffer(
- RING_BUFFER_INFO *RingInfo,
+ struct hv_ring_buffer_info *RingInfo,
u32 StartWriteOffset,
void *Src,
u32 SrcLen);
static u32
CopyFromRingBuffer(
- RING_BUFFER_INFO *RingInfo,
+ struct hv_ring_buffer_info *RingInfo,
void *Dest,
u32 DestLen,
u32 StartReadOffset);
@@ -256,8 +257,8 @@ Description:
Get various debug metrics for the specified ring buffer
--*/
-void RingBufferGetDebugInfo(RING_BUFFER_INFO *RingInfo,
- RING_BUFFER_DEBUG_INFO *DebugInfo)
+void RingBufferGetDebugInfo(struct hv_ring_buffer_info *RingInfo,
+ struct hv_ring_buffer_debug_info *debug_info)
{
u32 bytesAvailToWrite;
u32 bytesAvailToRead;
@@ -267,11 +268,11 @@ void RingBufferGetDebugInfo(RING_BUFFER_INFO *RingInfo,
&bytesAvailToRead,
&bytesAvailToWrite);
- DebugInfo->BytesAvailToRead = bytesAvailToRead;
- DebugInfo->BytesAvailToWrite = bytesAvailToWrite;
- DebugInfo->CurrentReadIndex = RingInfo->RingBuffer->ReadIndex;
- DebugInfo->CurrentWriteIndex = RingInfo->RingBuffer->WriteIndex;
- DebugInfo->CurrentInterruptMask = RingInfo->RingBuffer->InterruptMask;
+ debug_info->BytesAvailToRead = bytesAvailToRead;
+ debug_info->BytesAvailToWrite = bytesAvailToWrite;
+ debug_info->CurrentReadIndex = RingInfo->RingBuffer->ReadIndex;
+ debug_info->CurrentWriteIndex = RingInfo->RingBuffer->WriteIndex;
+ debug_info->CurrentInterruptMask = RingInfo->RingBuffer->InterruptMask;
}
}
@@ -285,7 +286,7 @@ Description:
Get the interrupt mask for the specified ring buffer
--*/
-u32 GetRingBufferInterruptMask(RING_BUFFER_INFO *rbi)
+u32 GetRingBufferInterruptMask(struct hv_ring_buffer_info *rbi)
{
return rbi->RingBuffer->InterruptMask;
}
@@ -299,18 +300,18 @@ Description:
Initialize the ring buffer
--*/
-int RingBufferInit(RING_BUFFER_INFO *RingInfo, void *Buffer, u32 BufferLen)
+int RingBufferInit(struct hv_ring_buffer_info *RingInfo, void *Buffer, u32 BufferLen)
{
- if (sizeof(RING_BUFFER) != PAGE_SIZE)
+ if (sizeof(struct hv_ring_buffer) != PAGE_SIZE)
return -EINVAL;
- memset(RingInfo, 0, sizeof(RING_BUFFER_INFO));
+ memset(RingInfo, 0, sizeof(struct hv_ring_buffer_info));
- RingInfo->RingBuffer = (RING_BUFFER *)Buffer;
+ RingInfo->RingBuffer = (struct hv_ring_buffer *)Buffer;
RingInfo->RingBuffer->ReadIndex = RingInfo->RingBuffer->WriteIndex = 0;
RingInfo->RingSize = BufferLen;
- RingInfo->RingDataSize = BufferLen - sizeof(RING_BUFFER);
+ RingInfo->RingDataSize = BufferLen - sizeof(struct hv_ring_buffer);
spin_lock_init(&RingInfo->ring_lock);
@@ -326,7 +327,7 @@ Description:
Cleanup the ring buffer
--*/
-void RingBufferCleanup(RING_BUFFER_INFO *RingInfo)
+void RingBufferCleanup(struct hv_ring_buffer_info *RingInfo)
{
}
@@ -339,7 +340,7 @@ Description:
Write to the ring buffer
--*/
-int RingBufferWrite(RING_BUFFER_INFO *OutRingInfo,
+int RingBufferWrite(struct hv_ring_buffer_info *OutRingInfo,
struct scatterlist *sglist, u32 sgcount)
{
int i = 0;
@@ -352,8 +353,6 @@ int RingBufferWrite(RING_BUFFER_INFO *OutRingInfo,
u64 prevIndices = 0;
unsigned long flags;
- DPRINT_ENTER(VMBUS);
-
for_each_sg(sglist, sg, sgcount, i)
{
totalBytesToWrite += sg->length;
@@ -382,9 +381,6 @@ int RingBufferWrite(RING_BUFFER_INFO *OutRingInfo,
byteAvailToWrite);
spin_unlock_irqrestore(&OutRingInfo->ring_lock, flags);
-
- DPRINT_EXIT(VMBUS);
-
return -1;
}
@@ -416,9 +412,6 @@ int RingBufferWrite(RING_BUFFER_INFO *OutRingInfo,
/* DumpRingInfo(OutRingInfo, "AFTER "); */
spin_unlock_irqrestore(&OutRingInfo->ring_lock, flags);
-
- DPRINT_EXIT(VMBUS);
-
return 0;
}
@@ -432,7 +425,7 @@ Description:
Read without advancing the read index
--*/
-int RingBufferPeek(RING_BUFFER_INFO *InRingInfo, void *Buffer, u32 BufferLen)
+int RingBufferPeek(struct hv_ring_buffer_info *InRingInfo, void *Buffer, u32 BufferLen)
{
u32 bytesAvailToWrite;
u32 bytesAvailToRead;
@@ -481,7 +474,7 @@ Description:
Read and advance the read index
--*/
-int RingBufferRead(RING_BUFFER_INFO *InRingInfo, void *Buffer,
+int RingBufferRead(struct hv_ring_buffer_info *InRingInfo, void *Buffer,
u32 BufferLen, u32 Offset)
{
u32 bytesAvailToWrite;
@@ -556,7 +549,7 @@ Description:
--*/
static u32
CopyToRingBuffer(
- RING_BUFFER_INFO *RingInfo,
+ struct hv_ring_buffer_info *RingInfo,
u32 StartWriteOffset,
void *Src,
u32 SrcLen)
@@ -594,7 +587,7 @@ Description:
--*/
static u32
CopyFromRingBuffer(
- RING_BUFFER_INFO *RingInfo,
+ struct hv_ring_buffer_info *RingInfo,
void *Dest,
u32 DestLen,
u32 StartReadOffset)
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.