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IOPCIRange.cpp
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/*
* Copyright (c) 2010-2010 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* The contents of this file constitute Original Code as defined in and
* are subject to the Apple Public Source License Version 2.0 (the
* "License"). You may not use this file except in compliance with the
* License. Please obtain a copy of the License at
* http://www.apple.com/publicsource and read it before using this file.
*
* This Original Code and all software distributed under the License are
* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
* License for the specific language governing rights and limitations
* under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#ifdef KERNEL
#include <IOKit/pci/IOPCIPrivate.h>
#include <IOKit/pci/IOPCIConfigurator.h>
#else
/*
cc IOPCIRange.cpp -o /tmp/pcirange -Wall -framework IOKit -framework CoreFoundation -arch i386 -g -lstdc++
*/
#include <assert.h>
#include <CoreFoundation/CoreFoundation.h>
#include <IOKit/IOKitLib.h>
#include <IOKit/IOKitKeys.h>
#include "IOKit/pci/IOPCIConfigurator.h"
#define panic(x) do { printf("panic: %s\n", x); assert(0); } while(0)
#define kprintf(fmt, args...) printf(fmt, ## args)
#endif
IOPCIScalar IOPCIScalarAlign(IOPCIScalar num, IOPCIScalar alignment)
{
return (num + (alignment - 1) & ~(alignment - 1));
}
IOPCIScalar IOPCIScalarTrunc(IOPCIScalar num, IOPCIScalar alignment)
{
return (num & ~(alignment - 1));
}
IOPCIRange * IOPCIRangeAlloc(void)
{
#ifdef KERNEL
return (IOMallocType(IOPCIRange));
#else
return ((IOPCIRange *) malloc(sizeof(IOPCIRange)));
#endif
}
void IOPCIRangeFree(IOPCIRange * range)
{
// memset(range, 0xBB, sizeof(*range));
#ifdef KERNEL
IOFreeType(range, IOPCIRange);
#else
free(range);
#endif
}
void IOPCIRangeInit(IOPCIRange * range, uint32_t type,
IOPCIScalar start, IOPCIScalar size, IOPCIScalar alignment)
{
bzero(range, sizeof(*range));
range->type = type;
range->start = start;
// range->size = 0;
range->proposedSize = size;
range->totalSize = size;
range->end = start;
// range->zero = 0;
range->alignment = alignment ? alignment : size;
// range->minAddress = 0;
range->maxAddress = 0xFFFFFFFF;
range->allocations = (IOPCIRange *) &range->end;
}
void IOPCIRangeInitAlloc(IOPCIRange * range, uint32_t type,
IOPCIScalar start, IOPCIScalar size, IOPCIScalar alignment)
{
IOPCIRangeInit(range, type, start, size, alignment);
range->size = range->proposedSize;
range->end = range->start + range->size;
}
bool IOPCIRangeListAddRange(IOPCIRange ** rangeList,
uint32_t type,
IOPCIScalar start,
IOPCIScalar size,
IOPCIScalar alignment)
{
IOPCIRange * range;
IOPCIRange * nextRange;
IOPCIRange ** prev;
IOPCIScalar end;
bool result = true;
bool alloc = true;
end = start + size;
for (prev = rangeList; (range = *prev); prev = &range->next)
{
if (((start >= range->start) && (start < range->end))
|| ((end > range->start) && (end <= range->end))
|| ((start < range->start) && (end > range->end)))
{
range = NULL;
result = false;
break;
}
if (end == range->start)
{
range->start = start;
range->size = range->end - range->start;
range->proposedSize = range->size;
alloc = false;
break;
}
if (start == range->end)
{
if ((nextRange = range->next) && (nextRange->start == end))
{
if (nextRange->allocations != (IOPCIRange *) &nextRange->end)
assert(false);
end = nextRange->end;
range->next = nextRange->next;
IOPCIRangeFree(nextRange);
}
range->end = end;
range->size = end - range->start;
range->proposedSize = range->size;
alloc = false;
break;
}
if (range->start > end)
{
alloc = true;
break;
}
}
if (result && alloc)
{
nextRange = IOPCIRangeAlloc();
IOPCIRangeInitAlloc(nextRange, type, start, size, alignment);
nextRange->next = range;
*prev = nextRange;
}
return (result);
}
IOPCIScalar IOPCIRangeListCollapse(IOPCIRange * headRange, IOPCIScalar alignment)
{
IOPCIScalar total = 0;
while (headRange)
{
total += IOPCIRangeCollapse(headRange, alignment);
headRange = headRange->next;
}
return (total);
}
IOPCIScalar IOPCIRangeCollapse(IOPCIRange * headRange, IOPCIScalar alignment)
{
IOPCIScalar start, end, saving;
IOPCIRange * range;
start = 0;
end = 0;
saving = headRange->size;
range = headRange->allocations;
do
{
// keep walking down the list
if (!range->size)
break;
if (!start)
start = range->start;
end = range->end;
range = range->nextSubRange;
}
while(true);
start = IOPCIScalarTrunc(start, alignment);
end = IOPCIScalarAlign(end, alignment);
if (!start) headRange->proposedSize = 0;
else
{
headRange->start = start;
headRange->end = end;
headRange->size =
headRange->proposedSize = end - start;
if (headRange->size > headRange->totalSize)
{
headRange->extendSize = headRange->size - headRange->totalSize;
}
else
{
headRange->extendSize = 0;
}
}
if (saving < headRange->proposedSize) panic("IOPCIRangeCollapse");
else if (headRange->proposedSize <= headRange->totalSize) saving = 0;
else saving -= headRange->proposedSize;
return (saving);
}
IOPCIScalar IOPCIRangeListLastFree(IOPCIRange * headRange, IOPCIScalar align)
{
IOPCIRange * next;
next = headRange;
while (next)
{
headRange = next;
next = next->next;
}
return (IOPCIRangeLastFree(headRange, align));
}
IOPCIScalar IOPCIRangeLastFree(IOPCIRange * headRange, IOPCIScalar align)
{
IOPCIScalar last;
IOPCIRange * range;
range = headRange->allocations;
last = headRange->start;
do
{
// keep walking down the list
if (!range->size) break;
last = range->end;
range = range->nextSubRange;
}
while(true);
last = IOPCIScalarAlign(last, align);
if (headRange->end > last)
last = headRange->end - last;
else
last = 0;
return (last);
}
void IOPCIRangeOptimize(IOPCIRange * headRange)
{
IOPCIScalar free;
IOPCIScalar count;
IOPCIScalar chunk, bump, tail;
IOPCIScalar next, end;
IOPCIRange * range;
IOPCIRange * prev;
range = headRange->allocations;
prev = NULL;
free = 0;
count = 0;
do
{
if (prev)
{
assert(range->start >= prev->end);
free += (range->start - prev->end);
}
// eol
if (!range->size) break;
range->nextToAllocate = prev;
if ((kIOPCIRangeFlagMaximizeSize | kIOPCIRangeFlagMaximizeRoot | kIOPCIRangeFlagSplay)
& range->flags) count++;
prev = range;
range = range->nextSubRange;
}
while(true);
if (!free) return;
end = headRange->end;
for (range = prev; free && range; end = range->start, range = range->nextToAllocate)
{
if (!(kIOPCIRangeFlagRelocatable & range->flags)) continue;
chunk = 0;
if ((kIOPCIRangeFlagMaximizeSize | kIOPCIRangeFlagSplay) & range->flags)
{
chunk = free / count;
chunk = IOPCIScalarTrunc(chunk, range->alignment);
free -= chunk;
count--;
}
next = range->end;
if (end < next) panic("end");
tail = IOPCIScalarTrunc(end - next, range->alignment);
if (chunk > tail) chunk = tail;
if (kIOPCIRangeFlagSplay & range->flags)
{
bump = tail - chunk;
range->end += bump;
range->start += bump;
}
else
{
range->size += chunk;
range->proposedSize = range->size;
range->start = IOPCIScalarTrunc(end - range->size, range->alignment);
range->end = range->start + range->size;
}
if (range->start & (range->alignment - 1)) panic("sA");
if (range->start > headRange->end) panic("s>");
if (range->start < headRange->start) panic("s<");
if (range->end > headRange->end) panic("e>");
if (range->end < headRange->start) panic("e<");
}
}
void IOPCIRangeListOptimize(IOPCIRange * headRange)
{
IOPCIRange * next;
next = headRange;
while (next)
{
IOPCIRangeOptimize(next);
next = next->next;
}
}
bool IOPCIRangeListAllocateSubRange(IOPCIRange * headRange,
IOPCIRange * newRange,
IOPCIScalar newStart)
{
IOPCIScalar minSize, maxSize;
IOPCIScalar len, bestFit, waste;
IOPCIScalar pos, endPos;
IOPCIRange ** where = NULL;
IOPCIRange * whereNext = NULL;
IOPCIRange * range = NULL;
IOPCIRange ** prev;
minSize = newRange->size;
if (!minSize) minSize = newRange->proposedSize;
if (!minSize) panic("!minSize");
if (!newStart) newStart = newRange->start;
bestFit = UINT64_MAX;
for (; headRange; headRange = headRange->next)
{
if (!headRange->size) continue;
maxSize = newRange->proposedSize;
if (!maxSize) panic("!maxSize");
if (maxSize < minSize) minSize = maxSize;
pos = headRange->start;
prev = &headRange->allocations;
range = NULL;
do
{
if (range)
{
// onto next element
if (!range->size)
{
// end of list
range = NULL;
break;
}
pos = range->end;
prev = &range->nextSubRange;
}
range = *prev;
if (range == newRange)
{
// reallocate in place - treat as free
range = range->nextSubRange;
}
endPos = range->start;
// [pos,endPos] is free
waste = endPos - pos;
if (pos > newRange->maxAddress) pos = newRange->maxAddress;
if (endPos > newRange->maxAddress) endPos = newRange->maxAddress;
if (newStart)
{
if (newStart < pos) continue;
if (newStart >= endPos) continue;
pos = newStart;
}
else pos = IOPCIScalarAlign(pos, newRange->alignment);
if (kIOPCIRangeFlagMaximizeRoot & newRange->flags)
endPos = IOPCIScalarTrunc(endPos, newRange->alignment);
if (endPos < pos) continue;
len = endPos - pos;
if (len < minSize) continue;
if (len > maxSize) len = maxSize;
if (newStart
|| (where && (newRange->start < newRange->minAddress) && (pos >= newRange->minAddress))
|| (len < maxSize)
|| (kIOPCIRangeFlagMaximizeRoot & newRange->flags))
{
}
else
{
if ((kIOPCIRangeFlagSplay | kIOPCIRangeFlagMaximizeSize) & newRange->flags)
{
// in biggest free area position
waste = UINT64_MAX - waste;
}
else
{
// least waste position
waste -= len;
}
if (where && (bestFit < waste)) continue;
bestFit = waste;
}
// best candidate, will queue prev->newRange->range
// new size to look for
minSize = len;
where = prev;
whereNext = range;
newRange->start = pos;
newRange->size = len;
newRange->end = pos + len;
if (newStart || !waste)
{
// use this if placed or zero waste
break;
}
}
while(true);
}
if (where)
{
if (kIOPCIRangeFlagMaximizeRoot & newRange->flags) newRange->proposedSize = newRange->size;
newRange->nextSubRange = whereNext;
*where = newRange;
}
return (where != NULL);
}
bool IOPCIRangeListDeallocateSubRange(IOPCIRange * headRange,
IOPCIRange * oldRange)
{
IOPCIRange * range = NULL;
IOPCIRange ** prev = NULL;
do
{
range = oldRange->allocations;
if (!range->size)
break;
IOPCIRangeListDeallocateSubRange(oldRange, range);
}
while(true);
for (range = NULL;
headRange && !range;
headRange = headRange->next)
{
prev = &headRange->allocations;
do
{
range = *prev;
if (range == oldRange)
break;
// keep walking down the list
if (!range->size)
{
range = NULL;
break;
}
}
while (prev = &range->nextSubRange, true);
}
if (range)
{
*prev = range->nextSubRange;
oldRange->nextSubRange = NULL;
oldRange->end = 0;
// oldRange->proposedSize = oldRange->size;
// oldRange->size = 0;
// oldRange->extendSize = 0;
oldRange->start = 0;
}
return (range != 0);
}
IOPCIScalar IOPCIRangeListSize(IOPCIRange * first)
{
IOPCIRange * allocs;
IOPCIRange * range;
IOPCIRange * prev;
IOPCIRange * newAlloc;
IOPCIRange * newAllocNext;
IOPCIScalar size, prevAddr, nextAddr;
allocs = NULL;
for (newAlloc = first; newAlloc; newAlloc = newAllocNext)
{
newAllocNext = newAlloc->nextToAllocate;
if (!allocs)
{
allocs = newAlloc;
newAlloc->nextToAllocate = NULL;
continue;
}
size = (newAlloc->totalSize + newAlloc->extendSize);
prev = NULL;
prevAddr = nextAddr = 0;
for (range = allocs; ; range = range->nextToAllocate)
{
if (range)
{
nextAddr = IOPCIScalarAlign(prevAddr, range->alignment);
assert(nextAddr >= prevAddr);
}
if (!range || (size <= (nextAddr - prevAddr)))
{
newAlloc->nextToAllocate = prev->nextToAllocate;
prev->nextToAllocate = newAlloc;
break;
}
prevAddr = nextAddr + range->totalSize + range->extendSize;
prev = range;
}
}
prevAddr = 0;
for (range = allocs; range; range = range->nextToAllocate)
{
nextAddr = IOPCIScalarAlign(prevAddr, range->alignment);
size = range->totalSize + range->extendSize;
prevAddr = nextAddr + size;
}
return (prevAddr);
}
void IOPCIRangeDump(IOPCIRange * head)
{
#if !DEVELOPMENT && !defined(__x86_64__) && defined(KERNEL)
#else
IOPCIRange * range;
uint32_t idx;
do
{
kprintf("head.start 0x%llx\n", head->start);
kprintf("head.size 0x%llx\n", head->size);
kprintf("head.end 0x%llx\n", head->end);
kprintf("head.alignment 0x%llx\n", head->alignment);
kprintf("allocs:\n");
range = head->allocations;
idx = 0;
while (true)
{
if (range == (IOPCIRange *) &head->end)
{
kprintf("[end]\n");
break;
}
kprintf("[%d].start 0x%llx\n", idx, range->start);
kprintf("[%d].size 0x%llx\n", idx, range->size);
kprintf("[%d].end 0x%llx\n", idx, range->end);
kprintf("[%d].alignment 0x%llx\n", idx, range->alignment);
idx++;
range = range->nextSubRange;
}
kprintf("------\n");
}
while ((head = head->next));
kprintf("------------------------------------\n");
#endif
}
#ifndef KERNEL
int main(int argc, char **argv)
{
IOPCIRange * head = NULL;
IOPCIRange * range;
IOPCIRange * requests = NULL;
IOPCIRange * elems[24];
IOPCIScalar shrink;
size_t idx;
bool ok;
for (idx = 0; idx < sizeof(elems) / sizeof(elems[0]); idx++)
{
elems[idx] = IOPCIRangeAlloc();
elems[idx]->maxAddress = 0xFFFFFFFFFFFFFFFFULL;
}
#if 1
#if 0
MEM: 0xd1c00000:0xd00000,0xd00000-0xd00000,0x0:0x400000 (at [i1e]188:0:0(0x8086:0x156d)) ARsmbv ok allocated
// MEM: 0xd1c00000:0x500000,0x500000-0x500000,0x0:0x400000 (at [i1f]189:3:0(0x8086:0x156d)) ARsmbv ok allocated
// MEM: 0xd2400000:0x500000,0x500000-0x500000,0x0:0x400000 (at [i21]189:5:0(0x8086:0x156d)) ARSmbv ok allocated
#endif
IOPCIRangeListAddRange(&head, 0, 0xd1c00000, 0xd00000, 0x400000);
idx = 0;
range = elems[idx++];
IOPCIRangeInit(range, 0, 0, 0x500000, 0x400000);
range->flags = kIOPCIRangeFlagRelocatable;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0, 0x500000, 0x400000);
range->flags = kIOPCIRangeFlagRelocatable | kIOPCIRangeFlagSplay;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
IOPCIRangeDump(head);
IOPCIRangeListOptimize(head);
IOPCIRangeDump(head);
exit(0);
#elif 1
#if 0
MEM: 0xb1000000:0x500000,0x500000-0x500000,0x0:0x400000 (at [ib]0:29:3(0x8086:0x9d1b)) Arsmbv ok allocated
MEM: 0xb1500000:0x100000,0x100000-0x100000,0x0:0x100000 (at [i8]0:28:0(0x8086:0x9d10)) ARsmbv ok allocated
MEM: 0xb1624000:0x4000,0x4000-0x4000,0x0:0x4000 (at [i11]0:31:2(0x8086:0x9d21)) Arsmbv ok allocated
MEM: 0xba900000:0x200000,0x200000-0x200000,0x0:0x100000 (at [ia]0:29:0(0x8086:0x9d18)) ARsMbv ok allocated
MEM: 0xb1700000:0x200000,0x200000-0x200000,0x0:0x100000 (at [i9]0:28:4(0x8086:0x9d14)) ARsMbv ok allocated
MEM: 0x7f81000000:0x1000000,0x1000000-0x1000000,0x0:0x1000000 (at [i4]0:2:0(0x8086:0x1927)) Arsmbv ok allocated
MEM: 0x7f80200000:0x10000,0x10000-0x10000,0x0:0x10000 (at [i12]0:31:3(0x8086:0x9d70)) Arsmbv ok allocated
MEM: 0x7f80210000:0x10000,0x10000-0x10000,0x0:0x10000 (at [i5]0:20:0(0x8086:0x9d2f)) Arsmbv ok allocated
MEM: 0x7f80220000:0x4000,0x4000-0x4000,0x0:0x4000 (at [i12]0:31:3(0x8086:0x9d70)) Arsmbv ok allocated
MEM: 0x7f80224000:0x1000,0x1000-0x1000,0x0:0x1000 (at [if]0:30:3(0x8086:0x9d2a)) Arsmbv ok allocated
MEM: 0x7f80225000:0x1000,0x1000-0x1000,0x0:0x1000 (at [ie]0:30:2(0x8086:0x9d29)) Arsmbv ok allocated
MEM: 0x7f80226000:0x1000,0x1000-0x1000,0x0:0x1000 (at [id]0:30:1(0x8086:0x9d28)) Arsmbv ok allocated
MEM: 0x7f80227000:0x1000,0x1000-0x1000,0x0:0x1000 (at [ic]0:30:0(0x8086:0x9d27)) Arsmbv ok allocated
MEM: 0x7f80228000:0x1000,0x1000-0x1000,0x0:0x1000 (at [i7]0:25:0(0x8086:0x9d66)) Arsmbv ok allocated
MEM: 0x7f80229000:0x1000,0x1000-0x1000,0x0:0x1000 (at [i6]0:22:0(0x8086:0x9d3a)) Arsmbv ok allocated
MEM: 0x7f8022a000:0x100,0x100-0x100,0x0:0x100 (at [i13]0:31:4(0x8086:0x9d23)) Arsmbv ok allocated
#endif
IOPCIRangeListAddRange(&head, 0, 0x0000000080000000, 0x0000000070000000, 0x1000);
IOPCIRangeListAddRange(&head, 0, 0x0000007f80000000, 0x0000000080000000, 0x1000);
idx = 0;
range = elems[idx++];
IOPCIRangeInit(range, 0, 0xb1000000, 0x500000, 0x400000);
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0xb1500000, 0x100000, 0x100000);
range->flags = kIOPCIRangeFlagRelocatable;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0xb1624000, 0x4000, 0x4000);
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0xba900000, 0x200000, 0x100000);
range->flags = kIOPCIRangeFlagMaximizeSize;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0xb1700000, 0x200000, 0x100000);
range->flags = kIOPCIRangeFlagMaximizeSize;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0x7f81000000, 0x1000000, 0x1000000);
range->maxAddress = 0xffffffffffffffff;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0x7f80200000, 0x10000, 0x10000);
range->maxAddress = 0xffffffffffffffff;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0x7f80210000, 0x10000, 0x10000);
range->maxAddress = 0xffffffffffffffff;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0x7f80220000, 0x4000, 0x4000);
range->maxAddress = 0xffffffffffffffff;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0x7f80224000, 0x1000, 0x1000);
range->maxAddress = 0xffffffffffffffff;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0x7f80225000, 0x1000, 0x1000);
range->maxAddress = 0xffffffffffffffff;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0x7f80226000, 0x1000, 0x1000);
range->maxAddress = 0xffffffffffffffff;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0x7f80227000, 0x1000, 0x1000);
range->maxAddress = 0xffffffffffffffff;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0x7f80228000, 0x1000, 0x1000);
range->maxAddress = 0xffffffffffffffff;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0x7f80229000, 0x1000, 0x1000);
range->maxAddress = 0xffffffffffffffff;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[idx++];
IOPCIRangeInit(range, 0, 0x7f8022a000, 0x100, 0x100);
range->maxAddress = 0xffffffffffffffff;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
IOPCIRangeDump(head);
IOPCIRangeListOptimize(head);
IOPCIRangeDump(head);
exit(0);
#elif 0
idx = 0;
range = elems[idx++];
IOPCIRangeInit(range, 0, 0, 0x11000000, 0x08000000);
range->nextToAllocate = elems[idx];
range = elems[idx++];
IOPCIRangeInit(range, 0, 0, 0x11000000, 0x08000000);
range->nextToAllocate = elems[idx];
range = elems[idx++];
IOPCIRangeInit(range, 0, 0, 0x08000000, 0x01000000);
range->nextToAllocate = elems[idx];
range = elems[idx++];
IOPCIRangeInit(range, 0, 0, 0x2000, 0x2000);
range->nextToAllocate = NULL;
shrink = IOPCIRangeListSize(elems[0]);
printf("size 0x%08qx\n", shrink);
exit(0);
#elif 0
IOPCIRangeListAddRange(&head, 0, 0x00000000b5f00000, 0x0000000001100000, 0x0000000000400000);
range = elems[0];
IOPCIRangeInit(range, 0, 0, 0x0000000000100000, 0x0000000000100000);
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[1];
IOPCIRangeInit(range, 0, 0, 0x0000000000f00000, 0x400000);
range->flags |= kIOPCIRangeFlagRelocatable | kIOPCIRangeFlagSplay;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
IOPCIRangeDump(head);
IOPCIRangeListOptimize(head);
IOPCIRangeDump(head);
exit(0);
#elif 0
uint32_t flags;
IOPCIRangeListAddRange(&head, 0, 0x25, 0x7, 1);
IOPCIRangeDump(head);
range = elems[0];
IOPCIRangeInit(range, 0, 0x25, 1, 1);
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[1];
IOPCIRangeInit(range, 0, 0, 6, 1);
range->size = 1;
range->flags |= kIOPCIRangeFlagMaximizeSize;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
assert(range->proposedSize == range->size);
IOPCIRangeDump(head);
exit(0);
range = elems[2];
IOPCIRangeInit(range, 0, 0x7, 1, 1);
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[3];
IOPCIRangeInit(range, 0, 0x6, 0x1, 1);
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[4];
IOPCIRangeInit(range, 0, 0x8, 1, 1);
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[5];
IOPCIRangeInit(range, 0, 0, 0xa, 1);
range->size = 9;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(0xa == range->size);
assert(ok);
exit(0);
flags = kIOPCIRangeFlagRelocatable | kIOPCIRangeFlagSplay;
// flags = kIOPCIRangeFlagRelocatable | kIOPCIRangeFlagMaximizeSize;
range = elems[2];
IOPCIRangeInit(range, 0, 0, 0xe, 1);
range->flags |= flags;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[3];
IOPCIRangeInit(range, 0, 0, 0x7, 1);
range->flags |= flags;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[4];
IOPCIRangeInit(range, 0, 0, 0x7, 1);
range->flags |= flags;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
IOPCIRangeOptimize(head);
exit(0);
#endif
#if 0
IOPCIRangeListAddRange(&head, 0, 0,0, 1024*1024);
IOPCIRangeDump(head);
shrink = IOPCIRangeListLastFree(head, 1024*1024);
printf("IOPCIRangeListLastFree 0x%llx\n", shrink);
exit(0);
#endif
#if 0
IOPCIRangeListAddRange(&head, 0, 0xa0800000, 0x500000, 0x100000);
range = elems[0];
IOPCIRangeInit(range, 0, 0xa0800000, 0x40000, 0x40000);
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[1];
IOPCIRangeInit(range, 0, 0xa0a00000, 0x400000, 0x100000);
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range->proposedSize = 0x300000;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
// ok = IOPCIRangeListDeallocateSubRange(head, range);
// assert(ok);
IOPCIRangeDump(head);
exit(0);
#endif
IOPCIRangeListAddRange(&head, 0, 0x6, 0xfa, 1);
IOPCIRangeDump(head);
range = elems[4];
range->start = 0x06;
range->proposedSize = 0x01;
range->alignment = 1;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[3];
range->start = 0x07;
range->proposedSize = 0x01;
range->alignment = 1;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[1];
range->start = 1*0x87;
range->size = 3;
range->proposedSize = 3;
range->alignment = 1;
range->flags = kIOPCIRangeFlagSplay;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[2];
range->start = 0;
range->proposedSize = 2;
range->alignment = 1;
range->flags = kIOPCIRangeFlagSplay;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[5];
range->start = 0;
range->proposedSize = 1;
range->alignment = 1;
range->flags = kIOPCIRangeFlagSplay;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
range = elems[6];
range->start = 0;
range->proposedSize = 1;
range->alignment = 1;
range->flags = kIOPCIRangeFlagSplay;
ok = IOPCIRangeListAllocateSubRange(head, range);
assert(ok);
IOPCIRangeDump(head);
exit(0);
shrink = IOPCIRangeListLastFree(head, 1024);
printf("IOPCIRangeListLastFree 0x%llx\n", shrink);
exit(0);
idx = 0;
IOPCIRangeInit(elems[idx++], 0, 0, 1024*1024);
range = elems[0];
ok = IOPCIRangeListAllocateSubRange(head, range);
printf("alloc(%d) [0x%llx, 0x%llx]\n", ok, range->start, range->size);
IOPCIRangeDump(head);
shrink = IOPCIRangeListCollapse(head, 1024*1024);
printf("Collapsed by 0x%llx\n", shrink);
IOPCIRangeDump(head);
exit(0);
IOPCIRangeListAddRange(&head, 0, 0xA0000000, 0x10000000);
IOPCIRangeListAddRange(&head, 0, 0x98000000, 0x08000000);