TestIOMemoryDescriptor.cpp [plain text]
#include <sys/cdefs.h>
#include <IOKit/assert.h>
#include <IOKit/system.h>
#include <IOKit/IOLib.h>
#include <IOKit/IOMemoryDescriptor.h>
#include <IOKit/IOMapper.h>
#include <IOKit/IODMACommand.h>
#include <IOKit/IOKitKeysPrivate.h>
#include "Tests.h"
#ifndef __LP64__
#include <IOKit/IOSubMemoryDescriptor.h>
#endif
#include <IOKit/IOSubMemoryDescriptor.h>
#include <IOKit/IOMultiMemoryDescriptor.h>
#include <IOKit/IOBufferMemoryDescriptor.h>
#include <IOKit/IOKitDebug.h>
#include <libkern/OSDebug.h>
#include <sys/uio.h>
__BEGIN_DECLS
#include <vm/pmap.h>
#include <vm/vm_pageout.h>
#include <mach/memory_object_types.h>
#include <device/device_port.h>
#include <mach/vm_prot.h>
#include <mach/mach_vm.h>
#include <vm/vm_fault.h>
#include <vm/vm_protos.h>
__END_DECLS
#if DEVELOPMENT || DEBUG
extern SInt32 gIOMemoryReferenceCount;
static int IOMultMemoryDescriptorTest(int newValue)
{
IOMemoryDescriptor * mds[3];
IOMultiMemoryDescriptor * mmd;
IOMemoryMap * map;
void * addr;
uint8_t * data;
uint32_t i;
IOAddressRange ranges[2];
data = (typeof(data)) IOMallocAligned(ptoa(8), page_size);
for (i = 0; i < ptoa(8); i++) data[i] = atop(i) | 0xD0;
ranges[0].address = (IOVirtualAddress)(data + ptoa(4));
ranges[0].length = ptoa(4);
ranges[1].address = (IOVirtualAddress)(data + ptoa(0));
ranges[1].length = ptoa(4);
mds[0] = IOMemoryDescriptor::withAddressRanges(&ranges[0], 2, kIODirectionOutIn, kernel_task);
mds[1] = IOSubMemoryDescriptor::withSubRange(mds[0], ptoa(3), ptoa(2), kIODirectionOutIn);
mds[2] = IOSubMemoryDescriptor::withSubRange(mds[0], ptoa(7), ptoa(1), kIODirectionOutIn);
mmd = IOMultiMemoryDescriptor::withDescriptors(&mds[0], sizeof(mds)/sizeof(mds[0]), kIODirectionOutIn, false);
mds[2]->release();
mds[1]->release();
mds[0]->release();
map = mmd->createMappingInTask(kernel_task, 0, kIOMapAnywhere, ptoa(7), mmd->getLength() - ptoa(7));
mmd->release();
assert(map);
addr = (void *) map->getVirtualAddress();
assert(ptoa(4) == map->getLength());
assert(0xd3d3d3d3 == ((uint32_t *)addr)[ptoa(0) / sizeof(uint32_t)]);
assert(0xd7d7d7d7 == ((uint32_t *)addr)[ptoa(1) / sizeof(uint32_t)]);
assert(0xd0d0d0d0 == ((uint32_t *)addr)[ptoa(2) / sizeof(uint32_t)]);
assert(0xd3d3d3d3 == ((uint32_t *)addr)[ptoa(3) / sizeof(uint32_t)]);
map->release();
IOFreeAligned(data, ptoa(8));
return (0);
}
static int
IODMACommandForceDoubleBufferTest(int newValue)
{
IOReturn ret;
IOBufferMemoryDescriptor * bmd;
IODMACommand * dma;
uint32_t dir, data;
IODMACommand::SegmentOptions segOptions =
{
.fStructSize = sizeof(segOptions),
.fNumAddressBits = 64,
.fMaxSegmentSize = 0x2000,
.fMaxTransferSize = 128*1024,
.fAlignment = 1,
.fAlignmentLength = 1,
.fAlignmentInternalSegments = 1
};
IODMACommand::Segment64 segments[1];
UInt32 numSegments;
UInt64 dmaOffset;
for (dir = kIODirectionIn; ; dir++)
{
bmd = IOBufferMemoryDescriptor::inTaskWithOptions(kernel_task,
dir | kIOMemoryPageable, ptoa(8));
assert(bmd);
((uint32_t*) bmd->getBytesNoCopy())[0] = 0x53535300 | dir;
ret = bmd->prepare((IODirection) dir);
assert(kIOReturnSuccess == ret);
dma = IODMACommand::withSpecification(kIODMACommandOutputHost64, &segOptions,
kIODMAMapOptionMapped,
NULL, NULL);
assert(dma);
ret = dma->setMemoryDescriptor(bmd, true);
assert(kIOReturnSuccess == ret);
ret = dma->synchronize(IODMACommand::kForceDoubleBuffer | kIODirectionOut);
assert(kIOReturnSuccess == ret);
dmaOffset = 0;
numSegments = 1;
ret = dma->gen64IOVMSegments(&dmaOffset, &segments[0], &numSegments);
assert(kIOReturnSuccess == ret);
assert(1 == numSegments);
if (kIODirectionOut & dir)
{
data = ((uint32_t*) bmd->getBytesNoCopy())[0];
assertf((0x53535300 | dir) == data, "mismatch 0x%x", data);
}
if (kIODirectionIn & dir)
{
IOMappedWrite32(segments[0].fIOVMAddr, 0x11223300 | dir);
}
ret = dma->clearMemoryDescriptor(true);
assert(kIOReturnSuccess == ret);
dma->release();
bmd->complete((IODirection) dir);
if (kIODirectionIn & dir)
{
data = ((uint32_t*) bmd->getBytesNoCopy())[0];
assertf((0x11223300 | dir) == data, "mismatch 0x%x", data);
}
bmd->release();
if (dir == kIODirectionInOut) break;
}
return (0);
}
static int __unused
IODMACommandLocalMappedNonContig(int newValue)
{
IOReturn kr;
IOMemoryDescriptor * md;
IODMACommand * dma;
OSDictionary * matching;
IOService * device;
IOMapper * mapper;
IODMACommand::SegmentOptions segOptions =
{
.fStructSize = sizeof(segOptions),
.fNumAddressBits = 64,
.fMaxSegmentSize = 128*1024,
.fMaxTransferSize = 128*1024,
.fAlignment = 1,
.fAlignmentLength = 1,
.fAlignmentInternalSegments = 1
};
IODMACommand::Segment64 segments[1];
UInt32 numSegments;
UInt64 dmaOffset;
UInt64 segPhys;
vm_address_t buffer;
vm_size_t bufSize = ptoa(4);
if (!IOMapper::gSystem) return (0);
buffer = 0;
kr = vm_allocate_kernel(kernel_map, &buffer, bufSize, VM_FLAGS_ANYWHERE, VM_KERN_MEMORY_IOKIT);
assert(KERN_SUCCESS == kr);
kr = vm_inherit(kernel_map, buffer + ptoa(1), ptoa(1), VM_INHERIT_NONE);
assert(KERN_SUCCESS == kr);
md = IOMemoryDescriptor::withAddressRange(
buffer + 0xa00, 0x2000, kIODirectionOutIn, kernel_task);
assert(md);
kr = md->prepare(kIODirectionOutIn);
assert(kIOReturnSuccess == kr);
segPhys = md->getPhysicalSegment(0, NULL, 0);
matching = IOService::nameMatching("XHC1");
assert(matching);
device = IOService::copyMatchingService(matching);
matching->release();
mapper = device ? IOMapper::copyMapperForDeviceWithIndex(device, 0) : NULL;
dma = IODMACommand::withSpecification(kIODMACommandOutputHost64, &segOptions,
kIODMAMapOptionMapped,
mapper, NULL);
assert(dma);
kr = dma->setMemoryDescriptor(md, true);
assert(kIOReturnSuccess == kr);
dmaOffset = 0;
numSegments = 1;
kr = dma->gen64IOVMSegments(&dmaOffset, &segments[0], &numSegments);
assert(kIOReturnSuccess == kr);
assert(1 == numSegments);
if (mapper) assertf(segments[0].fIOVMAddr != segPhys, "phys !local 0x%qx, 0x%qx, %p", segments[0].fIOVMAddr, segPhys, dma);
kr = dma->clearMemoryDescriptor(true);
assert(kIOReturnSuccess == kr);
dma->release();
kr = md->complete(kIODirectionOutIn);
assert(kIOReturnSuccess == kr);
md->release();
kr = vm_deallocate(kernel_map, buffer, bufSize);
assert(KERN_SUCCESS == kr);
OSSafeReleaseNULL(mapper);
return (0);
}
static int
IOMemoryRemoteTest(int newValue)
{
IOReturn ret;
IOMemoryDescriptor * md;
IOByteCount offset, length;
addr64_t addr;
uint32_t idx;
IODMACommand * dma;
IODMACommand::SegmentOptions segOptions =
{
.fStructSize = sizeof(segOptions),
.fNumAddressBits = 64,
.fMaxSegmentSize = 0x2000,
.fMaxTransferSize = 128*1024,
.fAlignment = 1,
.fAlignmentLength = 1,
.fAlignmentInternalSegments = 1
};
IODMACommand::Segment64 segments[1];
UInt32 numSegments;
UInt64 dmaOffset;
IOAddressRange ranges[2] = {
{ 0x1234567890123456ULL, 0x1000 }, { 0x5432109876543210, 0x2000 },
};
md = IOMemoryDescriptor::withAddressRanges(&ranges[0], 2, kIODirectionOutIn|kIOMemoryRemote, TASK_NULL);
assert(md);
ret = md->prepare(kIODirectionOutIn);
assert(kIOReturnSuccess == ret);
printf("remote md flags 0x%qx, r %d\n",
md->getFlags(), (0 != (kIOMemoryRemote & md->getFlags())));
for (offset = 0, idx = 0; true; offset += length, idx++)
{
addr = md->getPhysicalSegment(offset, &length, 0);
if (!length) break;
assert(idx < 2);
assert(addr == ranges[idx].address);
assert(length == ranges[idx].length);
}
assert(offset == md->getLength());
dma = IODMACommand::withSpecification(kIODMACommandOutputHost64, &segOptions,
kIODMAMapOptionUnmapped | kIODMAMapOptionIterateOnly,
NULL, NULL);
assert(dma);
ret = dma->setMemoryDescriptor(md, true);
assert(kIOReturnSuccess == ret);
for (dmaOffset = 0, idx = 0; dmaOffset < md->getLength(); idx++)
{
numSegments = 1;
ret = dma->gen64IOVMSegments(&dmaOffset, &segments[0], &numSegments);
assert(kIOReturnSuccess == ret);
assert(1 == numSegments);
assert(idx < 2);
assert(segments[0].fIOVMAddr == ranges[idx].address);
assert(segments[0].fLength == ranges[idx].length);
}
assert(dmaOffset == md->getLength());
ret = dma->clearMemoryDescriptor(true);
assert(kIOReturnSuccess == ret);
dma->release();
md->complete(kIODirectionOutIn);
md->release();
return (0);
}
static IOReturn
IOMemoryPrefaultTest(uint32_t options)
{
IOBufferMemoryDescriptor * bmd;
IOMemoryMap * map;
IOReturn kr;
uint32_t data;
uint32_t * p;
IOSimpleLock * lock;
lock = IOSimpleLockAlloc();
assert(lock);
bmd = IOBufferMemoryDescriptor::inTaskWithOptions(current_task(),
kIODirectionOutIn | kIOMemoryPageable, ptoa(8));
assert(bmd);
kr = bmd->prepare();
assert(KERN_SUCCESS == kr);
map = bmd->map(kIOMapPrefault);
assert(map);
p = (typeof(p)) map->getVirtualAddress();
IOSimpleLockLock(lock);
data = p[0];
IOSimpleLockUnlock(lock);
IOLog("IOMemoryPrefaultTest %d\n", data);
map->release();
bmd->release();
IOSimpleLockFree(lock);
return (kIOReturnSuccess);
}
static IOReturn
ZeroLengthTest(int newValue)
{
IOMemoryDescriptor * md;
md = IOMemoryDescriptor::withAddressRange(
0, 0, kIODirectionNone, current_task());
assert(md);
md->prepare();
md->complete();
md->release();
return (0);
}
static IOReturn
BadFixedAllocTest(int newValue)
{
IOBufferMemoryDescriptor * bmd;
IOMemoryMap * map;
bmd = IOBufferMemoryDescriptor::inTaskWithOptions(NULL,
kIODirectionIn | kIOMemoryPageable, ptoa(1));
assert(bmd);
map = bmd->createMappingInTask(kernel_task, 0x2000, 0);
assert(!map);
bmd->release();
return (0);
}
static IOReturn
IODirectionPrepareNoZeroFillTest(int newValue)
{
IOBufferMemoryDescriptor * bmd;
bmd = IOBufferMemoryDescriptor::inTaskWithOptions(NULL,
kIODirectionIn | kIOMemoryPageable, ptoa(24));
assert(bmd);
bmd->prepare((IODirection)(kIODirectionIn | kIODirectionPrepareNoZeroFill));
bmd->prepare(kIODirectionIn);
bmd->complete((IODirection)(kIODirectionIn | kIODirectionCompleteWithDataValid));
bmd->complete(kIODirectionIn);
bmd->release();
return (0);
}
static IOReturn
IOMemoryMapTest(uint32_t options)
{
IOBufferMemoryDescriptor * bmd;
IOMemoryDescriptor * md;
IOMemoryMap * map;
uint32_t data;
user_addr_t p;
uint8_t * p2;
int r;
uint64_t time, nano;
bmd = IOBufferMemoryDescriptor::inTaskWithOptions(current_task(),
kIODirectionOutIn | kIOMemoryPageable, 0x4018+0x800);
assert(bmd);
p = (typeof(p)) bmd->getBytesNoCopy();
p += 0x800;
data = 0x11111111;
r = copyout(&data, p, sizeof(data));
assert(r == 0);
data = 0x22222222;
r = copyout(&data, p + 0x1000, sizeof(data));
assert(r == 0);
data = 0x33333333;
r = copyout(&data, p + 0x2000, sizeof(data));
assert(r == 0);
data = 0x44444444;
r = copyout(&data, p + 0x3000, sizeof(data));
assert(r == 0);
md = IOMemoryDescriptor::withAddressRange(p, 0x4018,
kIODirectionOut | options,
current_task());
assert(md);
time = mach_absolute_time();
map = md->map(kIOMapReadOnly);
time = mach_absolute_time() - time;
assert(map);
absolutetime_to_nanoseconds(time, &nano);
p2 = (typeof(p2)) map->getVirtualAddress();
assert(0x11 == p2[0]);
assert(0x22 == p2[0x1000]);
assert(0x33 == p2[0x2000]);
assert(0x44 == p2[0x3000]);
data = 0x99999999;
r = copyout(&data, p + 0x2000, sizeof(data));
assert(r == 0);
assert(0x11 == p2[0]);
assert(0x22 == p2[0x1000]);
assert(0x44 == p2[0x3000]);
if (kIOMemoryMapCopyOnWrite & options) assert(0x33 == p2[0x2000]);
else assert(0x99 == p2[0x2000]);
IOLog("IOMemoryMapCopyOnWriteTest map(%s) %lld ns\n",
kIOMemoryMapCopyOnWrite & options ? "kIOMemoryMapCopyOnWrite" : "",
nano);
map->release();
md->release();
bmd->release();
return (kIOReturnSuccess);
}
static int
IOMemoryMapCopyOnWriteTest(int newValue)
{
IOMemoryMapTest(0);
IOMemoryMapTest(kIOMemoryMapCopyOnWrite);
return (0);
}
static int
AllocationNameTest(int newValue)
{
IOMemoryDescriptor * bmd;
kern_allocation_name_t name, prior;
name = kern_allocation_name_allocate("com.apple.iokit.test", 0);
assert(name);
prior = thread_set_allocation_name(name);
bmd = IOBufferMemoryDescriptor::inTaskWithOptions(TASK_NULL,
kIODirectionOutIn | kIOMemoryPageable | kIOMemoryKernelUserShared,
ptoa(13));
assert(bmd);
bmd->prepare();
thread_set_allocation_name(prior);
kern_allocation_name_release(name);
if (newValue != 7) bmd->release();
return (0);
}
int IOMemoryDescriptorTest(int newValue)
{
int result;
IOLog("/IOMemoryDescriptorTest %d\n", (int) gIOMemoryReferenceCount);
#if 0
if (6 == newValue)
{
IOMemoryDescriptor * sbmds[3];
IOMultiMemoryDescriptor * smmd;
IOMemoryDescriptor * mds[2];
IOMultiMemoryDescriptor * mmd;
IOMemoryMap * map;
sbmds[0] = IOBufferMemoryDescriptor::inTaskWithOptions(kernel_task, kIODirectionOutIn | kIOMemoryKernelUserShared, ptoa(1));
sbmds[1] = IOBufferMemoryDescriptor::inTaskWithOptions(kernel_task, kIODirectionOutIn | kIOMemoryKernelUserShared, ptoa(2));
sbmds[2] = IOBufferMemoryDescriptor::inTaskWithOptions(kernel_task, kIODirectionOutIn | kIOMemoryKernelUserShared, ptoa(3));
smmd = IOMultiMemoryDescriptor::withDescriptors(&sbmds[0], sizeof(sbmds)/sizeof(sbmds[0]), kIODirectionOutIn, false);
mds[0] = IOBufferMemoryDescriptor::inTaskWithOptions(kernel_task, kIODirectionOutIn | kIOMemoryKernelUserShared, ptoa(1));
mds[1] = smmd;
mmd = IOMultiMemoryDescriptor::withDescriptors(&mds[0], sizeof(mds)/sizeof(mds[0]), kIODirectionOutIn, false);
map = mmd->createMappingInTask(kernel_task, 0, kIOMapAnywhere);
assert(map);
map->release();
mmd->release();
mds[0]->release();
mds[1]->release();
sbmds[0]->release();
sbmds[1]->release();
sbmds[2]->release();
return (0);
}
else if (5 == newValue)
{
IOReturn ret;
IOMemoryDescriptor * md;
IODMACommand * dma;
IODMACommand::SegmentOptions segOptions =
{
.fStructSize = sizeof(segOptions),
.fNumAddressBits = 64,
.fMaxSegmentSize = 4096,
.fMaxTransferSize = 128*1024,
.fAlignment = 4,
.fAlignmentLength = 4,
.fAlignmentInternalSegments = 0x1000
};
IOAddressRange ranges[3][2] =
{
{
{ (uintptr_t) &IOMemoryDescriptorTest, 0x2ffc },
{ 0, 0 },
},
{
{ ranges[0][0].address, 0x10 },
{ 0x3000 + ranges[0][0].address, 0xff0 },
},
{
{ ranges[0][0].address, 0x2ffc },
{ trunc_page(ranges[0][0].address), 0x800 },
},
};
static const uint32_t rangesCount[3] = { 1, 2, 2 };
uint32_t test;
for (test = 0; test < 3; test++)
{
kprintf("---[%d] address 0x%qx-0x%qx, 0x%qx-0x%qx\n", test,
ranges[test][0].address, ranges[test][0].length,
ranges[test][1].address, ranges[test][1].length);
md = IOMemoryDescriptor::withAddressRanges((IOAddressRange*)&ranges[test][0], rangesCount[test], kIODirectionOut, kernel_task);
assert(md);
ret = md->prepare();
assert(kIOReturnSuccess == ret);
dma = IODMACommand::withSpecification(kIODMACommandOutputHost64, &segOptions,
IODMACommand::kMapped, NULL, NULL);
assert(dma);
ret = dma->setMemoryDescriptor(md, true);
if (kIOReturnSuccess == ret)
{
IODMACommand::Segment64 segments[1];
UInt32 numSegments;
UInt64 offset;
offset = 0;
do
{
numSegments = 1;
ret = dma->gen64IOVMSegments(&offset, &segments[0], &numSegments);
assert(kIOReturnSuccess == ret);
assert(1 == numSegments);
kprintf("seg 0x%qx, 0x%qx\n", segments[0].fIOVMAddr, segments[0].fLength);
}
while (offset < md->getLength());
ret = dma->clearMemoryDescriptor(true);
assert(kIOReturnSuccess == ret);
dma->release();
}
md->release();
}
return (kIOReturnSuccess);
}
else if (4 == newValue)
{
IOService * isp;
IOMapper * mapper;
IOBufferMemoryDescriptor * md1;
IODMACommand * dma;
IOReturn ret;
size_t bufSize = 8192 * 8192 * sizeof(uint32_t);
uint64_t start, time, nano;
isp = IOService::copyMatchingService(IOService::nameMatching("isp"));
assert(isp);
mapper = IOMapper::copyMapperForDeviceWithIndex(isp, 0);
assert(mapper);
md1 = IOBufferMemoryDescriptor::inTaskWithOptions(TASK_NULL,
kIODirectionOutIn | kIOMemoryPersistent | kIOMemoryPageable,
bufSize, page_size);
ret = md1->prepare();
assert(kIOReturnSuccess == ret);
IODMAMapSpecification mapSpec;
bzero(&mapSpec, sizeof(mapSpec));
uint64_t mapped;
uint64_t mappedLength;
start = mach_absolute_time();
ret = md1->dmaMap(mapper, NULL, &mapSpec, 0, bufSize, &mapped, &mappedLength);
assert(kIOReturnSuccess == ret);
time = mach_absolute_time() - start;
absolutetime_to_nanoseconds(time, &nano);
kprintf("time %lld us\n", nano / 1000ULL);
kprintf("seg0 0x%qx, 0x%qx\n", mapped, mappedLength);
assert(md1);
dma = IODMACommand::withSpecification(kIODMACommandOutputHost32,
32, 0, IODMACommand::kMapped, 0, 1, mapper, NULL);
assert(dma);
start = mach_absolute_time();
ret = dma->setMemoryDescriptor(md1, true);
assert(kIOReturnSuccess == ret);
time = mach_absolute_time() - start;
absolutetime_to_nanoseconds(time, &nano);
kprintf("time %lld us\n", nano / 1000ULL);
IODMACommand::Segment32 segments[1];
UInt32 numSegments = 1;
UInt64 offset;
offset = 0;
ret = dma->gen32IOVMSegments(&offset, &segments[0], &numSegments);
assert(kIOReturnSuccess == ret);
assert(1 == numSegments);
kprintf("seg0 0x%x, 0x%x\n", (int)segments[0].fIOVMAddr, (int)segments[0].fLength);
ret = dma->clearMemoryDescriptor(true);
assert(kIOReturnSuccess == ret);
md1->release();
return (kIOReturnSuccess);
}
if (3 == newValue)
{
IOBufferMemoryDescriptor * md1;
IOBufferMemoryDescriptor * md2;
IOMemoryMap * map1;
IOMemoryMap * map2;
uint32_t * buf1;
uint32_t * buf2;
IOReturn err;
md1 = IOBufferMemoryDescriptor::inTaskWithOptions(TASK_NULL,
kIODirectionOutIn | kIOMemoryPersistent | kIOMemoryPageable,
64*1024, page_size);
assert(md1);
map1 = md1->createMappingInTask(kernel_task, 0, kIOMapAnywhere | kIOMapUnique);
assert(map1);
buf1 = (uint32_t *) map1->getVirtualAddress();
md2 = IOBufferMemoryDescriptor::inTaskWithOptions(TASK_NULL,
kIODirectionOutIn | kIOMemoryPersistent | kIOMemoryPageable,
64*1024, page_size);
assert(md2);
map2 = md2->createMappingInTask(kernel_task, 0, kIOMapAnywhere | kIOMapUnique);
assert(map2);
buf2 = (uint32_t *) map2->getVirtualAddress();
memset(buf1, 0x11, 64*1024L);
memset(buf2, 0x22, 64*1024L);
kprintf("md1 %p, map1 %p, buf2 %p; md2 %p, map2 %p, buf2 %p\n", md1, map1, buf1, md2, map2, buf2);
kprintf("no redir 0x%08x, 0x%08x\n", buf1[0], buf2[0]);
assert(0x11111111 == buf1[0]);
assert(0x22222222 == buf2[0]);
err = map1->redirect(md2, 0, 0ULL);
kprintf("redir md2(0x%x) 0x%08x, 0x%08x\n", err, buf1[0], buf2[0]);
assert(0x11111111 == buf2[0]);
assert(0x22222222 == buf1[0]);
err = map1->redirect(md1, 0, 0ULL);
kprintf("redir md1(0x%x) 0x%08x, 0x%08x\n", err, buf1[0], buf2[0]);
assert(0x11111111 == buf1[0]);
assert(0x22222222 == buf2[0]);
map1->release();
map2->release();
md1->release();
md2->release();
}
#endif
result = IODMACommandForceDoubleBufferTest(newValue);
if (result) return (result);
result = AllocationNameTest(newValue);
if (result) return (result);
result = IOMemoryMapCopyOnWriteTest(newValue);
if (result) return (result);
result = IOMultMemoryDescriptorTest(newValue);
if (result) return (result);
result = ZeroLengthTest(newValue);
if (result) return (result);
result = IODirectionPrepareNoZeroFillTest(newValue);
if (result) return (result);
result = BadFixedAllocTest(newValue);
if (result) return (result);
result = IOMemoryRemoteTest(newValue);
if (result) return (result);
result = IOMemoryPrefaultTest(newValue);
if (result) return (result);
IOGeneralMemoryDescriptor * md;
vm_offset_t data[2];
vm_size_t bsize = 16*1024*1024;
vm_size_t srcsize, srcoffset, mapoffset, size;
kern_return_t kr;
data[0] = data[1] = 0;
kr = vm_allocate_kernel(kernel_map, &data[0], bsize, VM_FLAGS_ANYWHERE, VM_KERN_MEMORY_IOKIT);
assert(KERN_SUCCESS == kr);
vm_inherit(kernel_map, data[0] + ptoa(1), ptoa(1), VM_INHERIT_NONE);
vm_inherit(kernel_map, data[0] + ptoa(16), ptoa(4), VM_INHERIT_NONE);
IOLog("data 0x%lx, 0x%lx\n", (long)data[0], (long)data[1]);
uint32_t idx, offidx;
for (idx = 0; idx < (bsize / sizeof(uint32_t)); idx++)
{
((uint32_t*)data[0])[idx] = idx;
}
for (srcoffset = 0; srcoffset < bsize; srcoffset = ((srcoffset << 2) + 0x40c))
{
for (srcsize = 4; srcsize < (bsize - srcoffset - 1); srcsize = ((srcsize << 2) + 0x3fc))
{
IOAddressRange ranges[3];
uint32_t rangeCount = 1;
bzero(&ranges[0], sizeof(ranges));
ranges[0].address = data[0] + srcoffset;
ranges[0].length = srcsize;
ranges[1].address = ranges[2].address = data[0];
if (srcsize > ptoa(5))
{
ranges[0].length = 7634;
ranges[1].length = 9870;
ranges[2].length = srcsize - ranges[0].length - ranges[1].length;
ranges[1].address = ranges[0].address + ranges[0].length;
ranges[2].address = ranges[1].address + ranges[1].length;
rangeCount = 3;
}
else if ((srcsize > ptoa(2)) && !(page_mask & srcoffset))
{
ranges[0].length = ptoa(1);
ranges[1].length = ptoa(1);
ranges[2].length = srcsize - ranges[0].length - ranges[1].length;
ranges[0].address = data[0] + srcoffset + ptoa(1);
ranges[1].address = data[0] + srcoffset;
ranges[2].address = ranges[0].address + ranges[0].length;
rangeCount = 3;
}
md = OSDynamicCast(IOGeneralMemoryDescriptor,
IOMemoryDescriptor::withAddressRanges(&ranges[0], rangeCount, kIODirectionInOut, kernel_task));
assert(md);
IOLog("IOMemoryDescriptor::withAddressRanges [0x%lx @ 0x%lx]\n[0x%llx, 0x%llx],\n[0x%llx, 0x%llx],\n[0x%llx, 0x%llx]\n",
(long) srcsize, (long) srcoffset,
(long long) ranges[0].address - data[0], (long long) ranges[0].length,
(long long) ranges[1].address - data[0], (long long) ranges[1].length,
(long long) ranges[2].address - data[0], (long long) ranges[2].length);
if (kIOReturnSuccess == kr)
{
for (mapoffset = 0; mapoffset < srcsize; mapoffset = ((mapoffset << 1) + 0xf00))
{
for (size = 4; size < (srcsize - mapoffset - 1); size = ((size << 2) + 0x200))
{
IOMemoryMap * map;
mach_vm_address_t addr = 0;
uint32_t data;
map = md->createMappingInTask(kernel_task, 0, kIOMapAnywhere, mapoffset, size);
if (map) addr = map->getAddress();
else kr = kIOReturnError;
if (kIOReturnSuccess != kr) break;
kr = md->prepare();
if (kIOReturnSuccess != kr)
{
panic("prepare() fail 0x%x\n", kr);
break;
}
for (idx = 0; idx < size; idx += sizeof(uint32_t))
{
offidx = (idx + mapoffset + srcoffset);
if ((srcsize <= ptoa(5)) && (srcsize > ptoa(2)) && !(page_mask & srcoffset))
{
if (offidx < ptoa(2)) offidx ^= ptoa(1);
}
offidx /= sizeof(uint32_t);
if (offidx != ((uint32_t*)addr)[idx/sizeof(uint32_t)])
{
panic("vm mismatch md %p map %p, @ 0x%x, 0x%lx, 0x%lx, \n", md, map, idx, (long) srcoffset, (long) mapoffset);
kr = kIOReturnBadMedia;
}
else
{
if (sizeof(data) != md->readBytes(mapoffset + idx, &data, sizeof(data))) data = 0;
if (offidx != data)
{
panic("phys mismatch md %p map %p, @ 0x%x, 0x%lx, 0x%lx, \n", md, map, idx, (long) srcoffset, (long) mapoffset);
kr = kIOReturnBadMedia;
}
}
}
md->complete();
map->release();
}
if (kIOReturnSuccess != kr) break;
}
}
md->release();
if (kIOReturnSuccess != kr) break;
}
if (kIOReturnSuccess != kr) break;
}
if (kIOReturnSuccess != kr) IOLog("FAIL: src 0x%lx @ 0x%lx, map 0x%lx @ 0x%lx\n",
(long) srcsize, (long) srcoffset, (long) size, (long) mapoffset);
assert(kr == kIOReturnSuccess);
vm_deallocate(kernel_map, data[0], bsize);
IOLog("IOMemoryDescriptorTest/ %d\n", (int) gIOMemoryReferenceCount);
return (0);
}
#endif