#define IS_BYPASSED(type) (MAPTYPE(type) == kBypassed)
#define IS_NONCOHERENT(type) (MAPTYPE(type) == kNonCoherent)
-
-static bool gIOEnableCopyMapper = true;
-
enum
{
kWalkSyncIn = 0x01, // bounce -> md
OSMetaClassDefineReservedUsed(IODMACommand, 0);
OSMetaClassDefineReservedUsed(IODMACommand, 1);
-OSMetaClassDefineReservedUnused(IODMACommand, 2);
+OSMetaClassDefineReservedUsed(IODMACommand, 2);
OSMetaClassDefineReservedUnused(IODMACommand, 3);
OSMetaClassDefineReservedUnused(IODMACommand, 4);
OSMetaClassDefineReservedUnused(IODMACommand, 5);
return false;
};
+ if (fMapper)
+ fMapper->retain();
+
reserved = IONew(IODMACommandInternal, 1);
if (!reserved)
return false;
if (reserved)
IODelete(reserved, IODMACommandInternal, 1);
+ if (fMapper)
+ fMapper->release();
+
super::free();
}
mem->retain();
fMemory = mem;
+ mem->dmaCommandOperation(kIOMDSetDMAActive, this, 0);
if (autoPrepare)
return prepare();
};
if (fMemory) {
while (fActive)
complete();
+ fMemory->dmaCommandOperation(kIOMDSetDMAInactive, this, 0);
fMemory->release();
fMemory = 0;
}
void *segments,
UInt32 segmentIndex)
{
- IOOptionBits op = (IOOptionBits) reference;
+ IOOptionBits op = (uintptr_t) reference;
addr64_t maxPhys, address;
addr64_t remapAddr = 0;
uint64_t length;
IODMACommandInternal * state = target->reserved;
- if (target->fNumAddressBits && (target->fNumAddressBits < 64))
+ if (target->fNumAddressBits && (target->fNumAddressBits < 64) && !state->fLocalMapper)
maxPhys = (1ULL << target->fNumAddressBits);
else
maxPhys = 0;
if (!state->fMisaligned)
{
- state->fMisaligned |= (0 != (target->fAlignMask & address));
- if (state->fMisaligned) DEBG("misaligned %qx:%qx, %lx\n", address, length, target->fAlignMask);
+ state->fMisaligned |= (0 != (state->fSourceAlignMask & address));
+ if (state->fMisaligned) DEBG("misaligned %qx:%qx, %lx\n", address, length, state->fSourceAlignMask);
}
if (state->fMisaligned && (kWalkPreflight & op))
UInt32 numSegments;
UInt64 offset;
- if (gIOEnableCopyMapper && (kWalkPreflight & op))
+ if (kWalkPreflight & op)
{
- state->fCopyContig = false;
+ state->fMapContig = false;
state->fMisaligned = false;
state->fDoubleBuffer = false;
state->fPrepared = false;
state->fCopyNext = 0;
- state->fCopyPageAlloc = 0;
+ state->fCopyMapperPageAlloc = 0;
+ state->fLocalMapperPageAlloc = 0;
state->fCopyPageCount = 0;
state->fNextRemapIndex = 0;
state->fCopyMD = 0;
{
offset = 0;
numSegments = 0-1;
- ret = genIOVMSegments(segmentOp, (void *) op, &offset, state, &numSegments);
+ ret = genIOVMSegments(op, segmentOp, (void *) op, &offset, state, &numSegments);
}
op &= ~kWalkPreflight;
mapBase = mapper->iovmAlloc(state->fCopyPageCount);
if (mapBase)
{
- state->fCopyPageAlloc = mapBase;
- if (state->fCopyPageAlloc && state->fDoubleBuffer)
+ state->fCopyMapperPageAlloc = mapBase;
+ if (state->fCopyMapperPageAlloc && state->fDoubleBuffer)
{
DEBG("contig copy map\n");
- state->fCopyContig = true;
+ state->fMapContig = true;
}
- state->fCopyNext = ptoa_64(state->fCopyPageAlloc);
+ state->fCopyNext = ptoa_64(state->fCopyMapperPageAlloc);
offset = 0;
numSegments = 0-1;
- ret = genIOVMSegments(segmentOp, (void *) op, &offset, state, &numSegments);
+ ret = genIOVMSegments(op, segmentOp, (void *) op, &offset, state, &numSegments);
state->fPrepared = true;
op &= ~(kWalkSyncIn | kWalkSyncOut);
}
{
DEBG("alloc IOBMD\n");
state->fCopyMD = IOBufferMemoryDescriptor::withOptions(
- fMDSummary.fDirection, state->fPreparedLength, page_size);
+ fMDSummary.fDirection, state->fPreparedLength, state->fSourceAlignMask);
if (state->fCopyMD)
{
}
}
}
+
+ if (state->fLocalMapper)
+ {
+ state->fLocalMapperPageCount = atop_64(round_page(state->fPreparedLength));
+ state->fLocalMapperPageAlloc = fMapper->iovmAllocDMACommand(this, state->fLocalMapperPageCount);
+ state->fMapContig = true;
+ }
}
- if (gIOEnableCopyMapper && state->fPrepared && ((kWalkSyncIn | kWalkSyncOut) & op))
+ if (state->fPrepared && ((kWalkSyncIn | kWalkSyncOut) & op))
{
if (state->fCopyPageCount)
{
DEBG("sync fCopyPageCount %d\n", state->fCopyPageCount);
- if (state->fCopyPageAlloc)
+ if (state->fCopyMapperPageAlloc)
{
- state->fCopyNext = ptoa_64(state->fCopyPageAlloc);
+ state->fCopyNext = ptoa_64(state->fCopyMapperPageAlloc);
offset = 0;
numSegments = 0-1;
- ret = genIOVMSegments(segmentOp, (void *) op, &offset, state, &numSegments);
+ ret = genIOVMSegments(op, segmentOp, (void *) op, &offset, state, &numSegments);
}
else if (state->fCopyMD)
{
if (kWalkComplete & op)
{
- if (state->fCopyPageAlloc)
+ if (state->fLocalMapperPageAlloc)
+ {
+ fMapper->iovmFreeDMACommand(this, state->fLocalMapperPageAlloc, state->fLocalMapperPageCount);
+ state->fLocalMapperPageAlloc = 0;
+ state->fLocalMapperPageCount = 0;
+ }
+ if (state->fCopyMapperPageAlloc)
{
- gIOCopyMapper->iovmFree(state->fCopyPageAlloc, state->fCopyPageCount);
- state->fCopyPageAlloc = 0;
+ gIOCopyMapper->iovmFree(state->fCopyMapperPageAlloc, state->fCopyPageCount);
+ state->fCopyMapperPageAlloc = 0;
state->fCopyPageCount = 0;
}
if (state->fCopyMD)
return (ret);
}
+UInt8
+IODMACommand::getNumAddressBits(void)
+{
+ return (fNumAddressBits);
+}
+
+UInt32
+IODMACommand::getAlignment(void)
+{
+ return (fAlignMask + 1);
+}
+
IOReturn
IODMACommand::prepareWithSpecification(SegmentFunction outSegFunc,
UInt8 numAddressBits,
if (!alignment)
alignment = 1;
fAlignMask = alignment - 1;
- fMapper = mapper;
+ if (mapper != fMapper)
+ {
+ mapper->retain();
+ fMapper->release();
+ fMapper = mapper;
+ }
fInternalState->fIterateOnly = (0 != (kIterateOnly & mappingOptions));
if (IS_NONCOHERENT(mappingOptions) && flushCache) {
IOMemoryDescriptor *poMD = const_cast<IOMemoryDescriptor *>(fMemory);
- poMD->performOperation(kIOMemoryIncoherentIOStore, 0, fMDSummary.fLength);
+ poMD->performOperation(kIOMemoryIncoherentIOStore, offset, length);
}
if (fActive++)
{
state->fPreparedOffset = offset;
state->fPreparedLength = length;
- state->fCopyContig = false;
+ state->fMapContig = false;
state->fMisaligned = false;
state->fDoubleBuffer = false;
state->fPrepared = false;
state->fCopyNext = 0;
- state->fCopyPageAlloc = 0;
+ state->fCopyMapperPageAlloc = 0;
state->fCopyPageCount = 0;
state->fNextRemapIndex = 0;
state->fCopyMD = 0;
+ state->fLocalMapperPageAlloc = 0;
+ state->fLocalMapperPageCount = 0;
+ state->fLocalMapper = (fMapper && (fMapper != IOMapper::gSystem));
+
+ state->fSourceAlignMask = fAlignMask;
+ if (state->fLocalMapper)
+ state->fSourceAlignMask &= page_mask;
+
state->fCursor = state->fIterateOnly
|| (!state->fCheckAddressing
- && (!fAlignMask
- || ((fMDSummary.fPageAlign & (1 << 31)) && (0 == (fMDSummary.fPageAlign & fAlignMask)))));
+ && !state->fLocalMapper
+ && (!state->fSourceAlignMask
+ || ((fMDSummary.fPageAlign & (1 << 31)) && (0 == (fMDSummary.fPageAlign & state->fSourceAlignMask)))));
+
if (!state->fCursor)
{
IOOptionBits op = kWalkPrepare | kWalkPreflight;
{
IOMemoryDescriptor *poMD = const_cast<IOMemoryDescriptor *>(fMemory);
- poMD->performOperation(kIOMemoryIncoherentIOFlush, 0, fMDSummary.fLength);
+ poMD->performOperation(kIOMemoryIncoherentIOFlush, state->fPreparedOffset, state->fPreparedLength);
}
}
return ret;
}
+IOReturn
+IODMACommand::getPreparedOffsetAndLength(UInt64 * offset, UInt64 * length)
+{
+ IODMACommandInternal * state = fInternalState;
+ if (fActive < 1)
+ return (kIOReturnNotReady);
+
+ if (offset)
+ *offset = state->fPreparedOffset;
+ if (length)
+ *length = state->fPreparedLength;
+
+ return (kIOReturnSuccess);
+}
+
IOReturn
IODMACommand::synchronize(IOOptionBits options)
{
void *segments,
UInt32 segmentIndex)
{
- IODMACommandTransferContext * context = (IODMACommandTransferContext *) segments;
+ IODMACommandTransferContext * context = (IODMACommandTransferContext *) reference;
UInt64 length = min(segment.fLength, context->remaining);
addr64_t ioAddr = segment.fIOVMAddr;
addr64_t cpuAddr = ioAddr;
{
IODMACommandInternal * state = fInternalState;
IODMACommandTransferContext context;
+ Segment64 segments[1];
UInt32 numSegments = 0-1;
if (fActive < 1)
context.bufferOffset = 0;
context.remaining = length;
context.op = transferOp;
- (void) genIOVMSegments(transferSegment, (void *) kWalkClient, &offset, &context, &numSegments);
+ (void) genIOVMSegments(kWalkClient, transferSegment, &context, &offset, &segments[0], &numSegments);
return (length - context.remaining);
}
void *segmentsP,
UInt32 *numSegmentsP)
{
- return (genIOVMSegments(clientOutputSegment, (void *) kWalkClient, offsetP, segmentsP, numSegmentsP));
+ return (genIOVMSegments(kWalkClient, clientOutputSegment, (void *) fOutSeg,
+ offsetP, segmentsP, numSegmentsP));
}
IOReturn
-IODMACommand::genIOVMSegments(InternalSegmentFunction outSegFunc,
+IODMACommand::genIOVMSegments(uint32_t op,
+ InternalSegmentFunction outSegFunc,
void *reference,
UInt64 *offsetP,
void *segmentsP,
UInt32 *numSegmentsP)
{
- IOOptionBits op = (IOOptionBits) reference;
IODMACommandInternal * internalState = fInternalState;
IOOptionBits mdOp = kIOMDWalkSegments;
IOReturn ret = kIOReturnSuccess;
state->fOffset = offset;
state->fLength = memLength - offset;
- if (internalState->fCopyContig && (kWalkClient & op))
+ if (internalState->fMapContig && (kWalkClient & op))
{
- state->fIOVMAddr = ptoa_64(internalState->fCopyPageAlloc)
+ ppnum_t pageNum = internalState->fLocalMapperPageAlloc;
+ if (!pageNum)
+ pageNum = internalState->fCopyMapperPageAlloc;
+ state->fIOVMAddr = ptoa_64(pageNum)
+ offset - internalState->fPreparedOffset;
rtn = kIOReturnSuccess;
}
{
DEBG("sparse switch %qx, %qx ", curSeg.fIOVMAddr, curSeg.fLength);
if (trunc_page_64(curSeg.fIOVMAddr) == gIOCopyMapper->mapAddr(
- ptoa_64(internalState->fCopyPageAlloc + internalState->fNextRemapIndex)))
+ ptoa_64(internalState->fCopyMapperPageAlloc + internalState->fNextRemapIndex)))
{
- curSeg.fIOVMAddr = ptoa_64(internalState->fCopyPageAlloc + internalState->fNextRemapIndex)
+ curSeg.fIOVMAddr = ptoa_64(internalState->fCopyMapperPageAlloc + internalState->fNextRemapIndex)
+ (curSeg.fIOVMAddr & PAGE_MASK);
internalState->fNextRemapIndex += atop_64(round_page(curSeg.fLength));
}
else for (UInt checkRemapIndex = 0; checkRemapIndex < internalState->fCopyPageCount; checkRemapIndex++)
{
if (trunc_page_64(curSeg.fIOVMAddr) == gIOCopyMapper->mapAddr(
- ptoa_64(internalState->fCopyPageAlloc + checkRemapIndex)))
+ ptoa_64(internalState->fCopyMapperPageAlloc + checkRemapIndex)))
{
- curSeg.fIOVMAddr = ptoa_64(internalState->fCopyPageAlloc + checkRemapIndex)
+ curSeg.fIOVMAddr = ptoa_64(internalState->fCopyMapperPageAlloc + checkRemapIndex)
+ (curSeg.fIOVMAddr & PAGE_MASK);
internalState->fNextRemapIndex = checkRemapIndex + atop_64(round_page(curSeg.fLength));
break;
}
if (internalState->fCursor
- && (0 != (fAlignMask & curSeg.fIOVMAddr)))
+ && (0 != (internalState->fSourceAlignMask & curSeg.fIOVMAddr)))
{
curSeg.fIOVMAddr = 0;
ret = kIOReturnNotAligned;
void *reference, IODMACommand *target,
Segment64 segment, void *vSegList, UInt32 outSegIndex)
{
+ SegmentFunction segmentFunction = (SegmentFunction) reference;
IOReturn ret = kIOReturnSuccess;
if ((target->fNumAddressBits < 64)
- && ((segment.fIOVMAddr + segment.fLength - 1) >> target->fNumAddressBits))
+ && ((segment.fIOVMAddr + segment.fLength - 1) >> target->fNumAddressBits)
+ && (target->reserved->fLocalMapperPageAlloc || !target->reserved->fLocalMapper))
{
DEBG("kIOReturnMessageTooLarge(fNumAddressBits) %qx, %qx\n", segment.fIOVMAddr, segment.fLength);
ret = kIOReturnMessageTooLarge;
}
- if (!(*target->fOutSeg)(target, segment, vSegList, outSegIndex))
+ if (!(*segmentFunction)(target, segment, vSegList, outSegIndex))
{
DEBG("kIOReturnMessageTooLarge(fOutSeg) %qx, %qx\n", segment.fIOVMAddr, segment.fLength);
ret = kIOReturnMessageTooLarge;
return (ret);
}
+IOReturn
+IODMACommand::genIOVMSegments(SegmentFunction segmentFunction,
+ UInt64 *offsetP,
+ void *segmentsP,
+ UInt32 *numSegmentsP)
+{
+ return (genIOVMSegments(kWalkClient, clientOutputSegment, (void *) segmentFunction,
+ offsetP, segmentsP, numSegmentsP));
+}
+
bool
IODMACommand::OutputHost32(IODMACommand *,
Segment64 segment, void *vSegList, UInt32 outSegIndex)
projects / apple / xnu.git / blobdiff