[apple/xnu.git] / iokit / Kernel / IOMapper.cpp

/*
 * Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code 
 * as defined in and that 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.  The rights granted to you under the 
 * License may not be used to create, or enable the creation or 
 * redistribution of, unlawful or unlicensed copies of an Apple operating 
 * system, or to circumvent, violate, or enable the circumvention or 
 * violation of, any terms of an Apple operating system software license 
 * agreement.
 *
 * Please obtain a copy of the License at 
 * http://www.opensource.apple.com/apsl/ and read it before using this 
 * file.
 *
 * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * Please see the License for the specific language governing rights and 
 * limitations under the License.
 *
 * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
 */
#include <IOKit/IOLib.h>
#include <IOKit/IOMapper.h>
#include <libkern/c++/OSData.h>

#include "IOCopyMapper.h"

__BEGIN_DECLS
extern ppnum_t pmap_find_phys(pmap_t pmap, addr64_t va);
__END_DECLS

#define super IOService
OSDefineMetaClassAndAbstractStructors(IOMapper, IOService);

OSMetaClassDefineReservedUsed(IOMapper, 0);
OSMetaClassDefineReservedUnused(IOMapper, 1);
OSMetaClassDefineReservedUnused(IOMapper, 2);
OSMetaClassDefineReservedUnused(IOMapper, 3);
OSMetaClassDefineReservedUnused(IOMapper, 4);
OSMetaClassDefineReservedUnused(IOMapper, 5);
OSMetaClassDefineReservedUnused(IOMapper, 6);
OSMetaClassDefineReservedUnused(IOMapper, 7);
OSMetaClassDefineReservedUnused(IOMapper, 8);
OSMetaClassDefineReservedUnused(IOMapper, 9);
OSMetaClassDefineReservedUnused(IOMapper, 10);
OSMetaClassDefineReservedUnused(IOMapper, 11);
OSMetaClassDefineReservedUnused(IOMapper, 12);
OSMetaClassDefineReservedUnused(IOMapper, 13);
OSMetaClassDefineReservedUnused(IOMapper, 14);
OSMetaClassDefineReservedUnused(IOMapper, 15);

IOMapper * IOMapper::gSystem = (IOMapper *) IOMapper::kUnknown;

class IOMapperLock {
    IOLock *fWaitLock;
public:
    IOMapperLock() { fWaitLock = IOLockAlloc(); };
    ~IOMapperLock() { IOLockFree(fWaitLock); };

    void lock()   { IOLockLock(fWaitLock); };
    void unlock() { IOLockUnlock(fWaitLock); };
    void sleep(void *event)  { IOLockSleep(fWaitLock, event, THREAD_UNINT); };
    void wakeup(void *event) { IOLockWakeup(fWaitLock, event, false); };
};

static IOMapperLock sMapperLock;

bool IOMapper::start(IOService *provider)
{
    if (!super::start(provider))
        return false;

    if (!initHardware(provider))
        return false;

    if (fIsSystem) { 
        sMapperLock.lock();
        IOMapper::gSystem = this;
        sMapperLock.wakeup(&IOMapper::gSystem);
        sMapperLock.unlock();
    }

    return true;
}

bool IOMapper::allocTable(IOByteCount size)
{
    assert(!fTable);

    fTableSize = size;
    fTableHandle = NewARTTable(size, &fTable, &fTablePhys);
    return fTableHandle != 0;
}

void IOMapper::free()
{
    if (fTableHandle) {
        FreeARTTable(fTableHandle, fTableSize);
        fTableHandle = 0;
    }

    super::free();
}

void IOMapper::setMapperRequired(bool hasMapper)
{
    if (hasMapper)
        IOMapper::gSystem = (IOMapper *) kHasMapper;
    else {
        sMapperLock.lock();
        IOMapper::gSystem = (IOMapper *) kNoMapper;
        sMapperLock.unlock();
        sMapperLock.wakeup(&IOMapper::gSystem);
    }
}

void IOMapper::waitForSystemMapper()
{
    sMapperLock.lock();
    while ((vm_address_t) IOMapper::gSystem & kWaitMask)
        sMapperLock.sleep(&IOMapper::gSystem);
    sMapperLock.unlock();
}

void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
                            ppnum_t *pageList, IOItemCount pageCount)
{
    while (pageCount--)
        iovmInsert(addr, offset++, *pageList++);
}

void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
                            upl_page_info_t *pageList, IOItemCount pageCount)
{
    for (IOItemCount i = 0; i < pageCount; i++)
        iovmInsert(addr, offset + i, pageList[i].phys_addr);
}

OSData * IOMapper::
NewARTTable(IOByteCount size, void ** virtAddrP, ppnum_t *physAddrP)
{
    if (!virtAddrP || !physAddrP)
	return 0;

    kern_return_t kr;
    vm_address_t address;

    size = round_page_32(size);
    kr = kmem_alloc_contig(kernel_map, &address, size, PAGE_MASK, 0);
    if (kr)
        return 0;

    ppnum_t pagenum = pmap_find_phys(kernel_pmap, (addr64_t) address);
    if (pagenum)
	*physAddrP = pagenum;
    else {
	FreeARTTable((OSData *) address, size);
	address = 0;
    }

    *virtAddrP = (void *) address;

    return (OSData *) address;
}

void IOMapper::FreeARTTable(OSData *artHandle, IOByteCount size)
{
    vm_address_t address = (vm_address_t) artHandle;

    size = round_page_32(size);
    kmem_free(kernel_map, address, size);	// Just panic if address is 0
}

bool IOMapper::getBypassMask(addr64_t *maskP) const
{
    return false;
}

__BEGIN_DECLS

// These are C accessors to the system mapper for non-IOKit clients
ppnum_t IOMapperIOVMAlloc(unsigned pages)
{
    IOMapper::checkForSystemMapper();

    if (IOMapper::gSystem)
        return IOMapper::gSystem->iovmAlloc((IOItemCount) pages);
    else
        return 0;
}

void IOMapperIOVMFree(ppnum_t addr, unsigned pages)
{
    if (IOMapper::gSystem)
        IOMapper::gSystem->iovmFree(addr, (IOItemCount) pages);
}

ppnum_t IOMapperInsertPage(ppnum_t addr, unsigned offset, ppnum_t page)
{
    if (IOMapper::gSystem) {
        IOMapper::gSystem->iovmInsert(addr, (IOItemCount) offset, page);
        return addr + offset;
    }
    else
        return page;
}

void IOMapperInsertPPNPages(ppnum_t addr, unsigned offset,
                            ppnum_t *pageList, unsigned pageCount)
{
    if (!IOMapper::gSystem)
        panic("IOMapperInsertPPNPages no system mapper");
    else
        assert(!((vm_address_t) IOMapper::gSystem & 3));

    IOMapper::gSystem->
        iovmInsert(addr, (IOItemCount) offset, pageList, pageCount);
}

void IOMapperInsertUPLPages(ppnum_t addr, unsigned offset,
                            upl_page_info_t *pageList, unsigned pageCount)
{
    if (!IOMapper::gSystem)
        panic("IOMapperInsertUPLPages no system mapper");
    else
        assert(!((vm_address_t) IOMapper::gSystem & 3));

    IOMapper::gSystem->iovmInsert(addr,
                                 (IOItemCount) offset,
                                  pageList,
                                  (IOItemCount) pageCount);
}

/////////////////////////////////////////////////////////////////////////////
//
//
//	IOLib.h APIs
//
//
/////////////////////////////////////////////////////////////////////////////

#include <machine/machine_routines.h>

UInt8 IOMappedRead8(IOPhysicalAddress address)
{
    IOMapper::checkForSystemMapper();

    if (IOMapper::gSystem) {
        addr64_t addr = IOMapper::gSystem->mapAddr(address);
        return (UInt8) ml_phys_read_byte_64(addr);
    }
    else
        return (UInt8) ml_phys_read_byte((vm_offset_t) address);
}

UInt16 IOMappedRead16(IOPhysicalAddress address)
{
    IOMapper::checkForSystemMapper();

    if (IOMapper::gSystem) {
        addr64_t addr = IOMapper::gSystem->mapAddr(address);
        return (UInt16) ml_phys_read_half_64(addr);
    }
    else
        return (UInt16) ml_phys_read_half((vm_offset_t) address);
}

UInt32 IOMappedRead32(IOPhysicalAddress address)
{
    IOMapper::checkForSystemMapper();

    if (IOMapper::gSystem) {
        addr64_t addr = IOMapper::gSystem->mapAddr(address);
	return (UInt32) ml_phys_read_word_64(addr);
    }
    else
        return (UInt32) ml_phys_read_word((vm_offset_t) address);
}

UInt64 IOMappedRead64(IOPhysicalAddress address)
{
    IOMapper::checkForSystemMapper();

    if (IOMapper::gSystem) {
        addr64_t addr = IOMapper::gSystem->mapAddr(address);
        return (UInt64) ml_phys_read_double_64(addr);
    }
    else
        return (UInt64) ml_phys_read_double((vm_offset_t) address);
}

void IOMappedWrite8(IOPhysicalAddress address, UInt8 value)
{
    IOMapper::checkForSystemMapper();

    if (IOMapper::gSystem) {
        addr64_t addr = IOMapper::gSystem->mapAddr(address);
        ml_phys_write_byte_64(addr, value);
    }
    else
        ml_phys_write_byte((vm_offset_t) address, value);
}

void IOMappedWrite16(IOPhysicalAddress address, UInt16 value)
{
    IOMapper::checkForSystemMapper();

    if (IOMapper::gSystem) {
        addr64_t addr = IOMapper::gSystem->mapAddr(address);
        ml_phys_write_half_64(addr, value);
    }
    else
        ml_phys_write_half((vm_offset_t) address, value);
}

void IOMappedWrite32(IOPhysicalAddress address, UInt32 value)
{
    IOMapper::checkForSystemMapper();

    if (IOMapper::gSystem) {
        addr64_t addr = IOMapper::gSystem->mapAddr(address);
        ml_phys_write_word_64(addr, value);
    }
    else
        ml_phys_write_word((vm_offset_t) address, value);
}

void IOMappedWrite64(IOPhysicalAddress address, UInt64 value)
{
    IOMapper::checkForSystemMapper();

    if (IOMapper::gSystem) {
        addr64_t addr = IOMapper::gSystem->mapAddr(address);
        ml_phys_write_double_64(addr, value);
    }
    else
        ml_phys_write_double((vm_offset_t) address, value);
}

mach_vm_address_t IOMallocPhysical(mach_vm_size_t size, mach_vm_address_t mask)
{
    mach_vm_address_t address = 0;
    if (gIOCopyMapper)
    {
	address = ptoa_64(gIOCopyMapper->iovmAlloc(atop_64(round_page(size))));
    }

    return (address);
}

void IOFreePhysical(mach_vm_address_t address, mach_vm_size_t size)
{
    if (gIOCopyMapper)
    {
	gIOCopyMapper->iovmFree(atop_64(address), atop_64(round_page(size)));
    }
}


__END_DECLS
Commit	Line	Data
55e303ae	1	/*
91447636	2	* Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved.
55e303ae	3	*
8ad349bb	4	* @APPLE_LICENSE_OSREFERENCE_HEADER_START@
55e303ae	5	*
8ad349bb A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the
	10	* License may not be used to create, or enable the creation or
	11	* redistribution of, unlawful or unlicensed copies of an Apple operating
	12	* system, or to circumvent, violate, or enable the circumvention or
	13	* violation of, any terms of an Apple operating system software license
	14	* agreement.
	15	*
	16	* Please obtain a copy of the License at
	17	* http://www.opensource.apple.com/apsl/ and read it before using this
	18	* file.
	19	*
	20	* The Original Code and all software distributed under the License are
	21	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	22	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	23	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	24	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	25	* Please see the License for the specific language governing rights and
	26	* limitations under the License.
	27	*
	28	* @APPLE_LICENSE_OSREFERENCE_HEADER_END@
55e303ae A	29	*/
	30	#include <IOKit/IOLib.h>
	31	#include <IOKit/IOMapper.h>
	32	#include <libkern/c++/OSData.h>
	33
5d5c5d0d A	34	#include "IOCopyMapper.h"
	35
	36	__BEGIN_DECLS
	37	extern ppnum_t pmap_find_phys(pmap_t pmap, addr64_t va);
	38	__END_DECLS
	39
55e303ae A	40	#define super IOService
	41	OSDefineMetaClassAndAbstractStructors(IOMapper, IOService);
	42
5d5c5d0d	43	OSMetaClassDefineReservedUsed(IOMapper, 0);
55e303ae A	44	OSMetaClassDefineReservedUnused(IOMapper, 1);
	45	OSMetaClassDefineReservedUnused(IOMapper, 2);
	46	OSMetaClassDefineReservedUnused(IOMapper, 3);
	47	OSMetaClassDefineReservedUnused(IOMapper, 4);
	48	OSMetaClassDefineReservedUnused(IOMapper, 5);
	49	OSMetaClassDefineReservedUnused(IOMapper, 6);
	50	OSMetaClassDefineReservedUnused(IOMapper, 7);
	51	OSMetaClassDefineReservedUnused(IOMapper, 8);
	52	OSMetaClassDefineReservedUnused(IOMapper, 9);
	53	OSMetaClassDefineReservedUnused(IOMapper, 10);
	54	OSMetaClassDefineReservedUnused(IOMapper, 11);
	55	OSMetaClassDefineReservedUnused(IOMapper, 12);
	56	OSMetaClassDefineReservedUnused(IOMapper, 13);
	57	OSMetaClassDefineReservedUnused(IOMapper, 14);
	58	OSMetaClassDefineReservedUnused(IOMapper, 15);
	59
	60	IOMapper * IOMapper::gSystem = (IOMapper *) IOMapper::kUnknown;
	61
	62	class IOMapperLock {
	63	IOLock *fWaitLock;
	64	public:
	65	IOMapperLock() { fWaitLock = IOLockAlloc(); };
	66	~IOMapperLock() { IOLockFree(fWaitLock); };
	67
	68	void lock() { IOLockLock(fWaitLock); };
	69	void unlock() { IOLockUnlock(fWaitLock); };
	70	void sleep(void *event) { IOLockSleep(fWaitLock, event, THREAD_UNINT); };
	71	void wakeup(void *event) { IOLockWakeup(fWaitLock, event, false); };
	72	};
	73
	74	static IOMapperLock sMapperLock;
	75
	76	bool IOMapper::start(IOService *provider)
	77	{
	78	if (!super::start(provider))
	79	return false;
	80
	81	if (!initHardware(provider))
	82	return false;
	83
	84	if (fIsSystem) {
	85	sMapperLock.lock();
	86	IOMapper::gSystem = this;
	87	sMapperLock.wakeup(&IOMapper::gSystem);
	88	sMapperLock.unlock();
	89	}
	90
	91	return true;
	92	}
	93
	94	bool IOMapper::allocTable(IOByteCount size)
	95	{
	96	assert(!fTable);
	97
	98	fTableSize = size;
	99	fTableHandle = NewARTTable(size, &fTable, &fTablePhys);
	100	return fTableHandle != 0;
	101	}
	102
	103	void IOMapper::free()
	104	{
	105	if (fTableHandle) {
	106	FreeARTTable(fTableHandle, fTableSize);
	107	fTableHandle = 0;
108	}
109
110	super::free();
111	}
112
113	void IOMapper::setMapperRequired(bool hasMapper)
114	{
115	if (hasMapper)
116	IOMapper::gSystem = (IOMapper *) kHasMapper;
117	else {
118	sMapperLock.lock();
119	IOMapper::gSystem = (IOMapper *) kNoMapper;
120	sMapperLock.unlock();
121	sMapperLock.wakeup(&IOMapper::gSystem);
122	}
123	}
124
125	void IOMapper::waitForSystemMapper()
126	{
127	sMapperLock.lock();
128	while ((vm_address_t) IOMapper::gSystem & kWaitMask)
129	sMapperLock.sleep(&IOMapper::gSystem);
130	sMapperLock.unlock();
131	}
132
133	void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
134	ppnum_t *pageList, IOItemCount pageCount)
135	{
136	while (pageCount--)
137	iovmInsert(addr, offset++, *pageList++);
138	}
139
140	void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
141	upl_page_info_t *pageList, IOItemCount pageCount)
142	{
143	for (IOItemCount i = 0; i < pageCount; i++)
144	iovmInsert(addr, offset + i, pageList[i].phys_addr);
145	}
146
5d5c5d0d A	147	OSData * IOMapper::
5d5c5d0d A	148	NewARTTable(IOByteCount size, void ** virtAddrP, ppnum_t *physAddrP)
8ad349bb	149	{
5d5c5d0d A	150	if (!virtAddrP \|\| !physAddrP)
	151	return 0;
	152
55e303ae	153	kern_return_t kr;
5d5c5d0d	154	vm_address_t address;
55e303ae	155
55e303ae	156	size = round_page_32(size);
5d5c5d0d A	157	kr = kmem_alloc_contig(kernel_map, &address, size, PAGE_MASK, 0);
5d5c5d0d A	158	if (kr)
55e303ae A	159	return 0;
55e303ae A	160
5d5c5d0d A	161	ppnum_t pagenum = pmap_find_phys(kernel_pmap, (addr64_t) address);
	162	if (pagenum)
	163	*physAddrP = pagenum;
	164	else {
	165	FreeARTTable((OSData *) address, size);
	166	address = 0;
	167	}
55e303ae	168
5d5c5d0d	169	virtAddrP = (void ) address;
55e303ae	170
5d5c5d0d	171	return (OSData *) address;
55e303ae A	172	}
	173
	174	void IOMapper::FreeARTTable(OSData *artHandle, IOByteCount size)
	175	{
5d5c5d0d	176	vm_address_t address = (vm_address_t) artHandle;
55e303ae	177
5d5c5d0d A	178	size = round_page_32(size);
	179	kmem_free(kernel_map, address, size); // Just panic if address is 0
	180	}
8ad349bb	181
5d5c5d0d A	182	bool IOMapper::getBypassMask(addr64_t *maskP) const
	183	{
	184	return false;
55e303ae A	185	}
	186
	187	__BEGIN_DECLS
	188
	189	// These are C accessors to the system mapper for non-IOKit clients
	190	ppnum_t IOMapperIOVMAlloc(unsigned pages)
	191	{
	192	IOMapper::checkForSystemMapper();
	193
	194	if (IOMapper::gSystem)
	195	return IOMapper::gSystem->iovmAlloc((IOItemCount) pages);
	196	else
	197	return 0;
	198	}
	199
	200	void IOMapperIOVMFree(ppnum_t addr, unsigned pages)
	201	{
	202	if (IOMapper::gSystem)
	203	IOMapper::gSystem->iovmFree(addr, (IOItemCount) pages);
	204	}
	205
	206	ppnum_t IOMapperInsertPage(ppnum_t addr, unsigned offset, ppnum_t page)
	207	{
	208	if (IOMapper::gSystem) {
	209	IOMapper::gSystem->iovmInsert(addr, (IOItemCount) offset, page);
	210	return addr + offset;
	211	}
	212	else
	213	return page;
	214	}
	215
	216	void IOMapperInsertPPNPages(ppnum_t addr, unsigned offset,
	217	ppnum_t *pageList, unsigned pageCount)
	218	{
	219	if (!IOMapper::gSystem)
	220	panic("IOMapperInsertPPNPages no system mapper");
	221	else
	222	assert(!((vm_address_t) IOMapper::gSystem & 3));
	223
	224	IOMapper::gSystem->
	225	iovmInsert(addr, (IOItemCount) offset, pageList, pageCount);
	226	}
	227
	228	void IOMapperInsertUPLPages(ppnum_t addr, unsigned offset,
	229	upl_page_info_t *pageList, unsigned pageCount)
	230	{
	231	if (!IOMapper::gSystem)
	232	panic("IOMapperInsertUPLPages no system mapper");
	233	else
	234	assert(!((vm_address_t) IOMapper::gSystem & 3));
	235
	236	IOMapper::gSystem->iovmInsert(addr,
	237	(IOItemCount) offset,
	238	pageList,
	239	(IOItemCount) pageCount);
	240	}
	241
	242	/////////////////////////////////////////////////////////////////////////////
	243	//
	244	//
	245	// IOLib.h APIs
	246	//
	247	//
	248	/////////////////////////////////////////////////////////////////////////////
249
250	#include <machine/machine_routines.h>
251
252	UInt8 IOMappedRead8(IOPhysicalAddress address)
253	{
254	IOMapper::checkForSystemMapper();
255
256	if (IOMapper::gSystem) {
257	addr64_t addr = IOMapper::gSystem->mapAddr(address);
258	return (UInt8) ml_phys_read_byte_64(addr);
259	}
260	else
261	return (UInt8) ml_phys_read_byte((vm_offset_t) address);
262	}
263
264	UInt16 IOMappedRead16(IOPhysicalAddress address)
265	{
266	IOMapper::checkForSystemMapper();
267
268	if (IOMapper::gSystem) {
269	addr64_t addr = IOMapper::gSystem->mapAddr(address);
270	return (UInt16) ml_phys_read_half_64(addr);
271	}
272	else
273	return (UInt16) ml_phys_read_half((vm_offset_t) address);
274	}
275
276	UInt32 IOMappedRead32(IOPhysicalAddress address)
277	{
278	IOMapper::checkForSystemMapper();
279
280	if (IOMapper::gSystem) {
281	addr64_t addr = IOMapper::gSystem->mapAddr(address);
282	return (UInt32) ml_phys_read_word_64(addr);
283	}
284	else
285	return (UInt32) ml_phys_read_word((vm_offset_t) address);
286	}
287
288	UInt64 IOMappedRead64(IOPhysicalAddress address)
289	{
290	IOMapper::checkForSystemMapper();
291
292	if (IOMapper::gSystem) {
293	addr64_t addr = IOMapper::gSystem->mapAddr(address);
294	return (UInt64) ml_phys_read_double_64(addr);
295	}
296	else
297	return (UInt64) ml_phys_read_double((vm_offset_t) address);
298	}
299
300	void IOMappedWrite8(IOPhysicalAddress address, UInt8 value)
301	{
302	IOMapper::checkForSystemMapper();
303
304	if (IOMapper::gSystem) {
305	addr64_t addr = IOMapper::gSystem->mapAddr(address);
306	ml_phys_write_byte_64(addr, value);
307	}
308	else
309	ml_phys_write_byte((vm_offset_t) address, value);
310	}
311
312	void IOMappedWrite16(IOPhysicalAddress address, UInt16 value)
313	{
314	IOMapper::checkForSystemMapper();
315
316	if (IOMapper::gSystem) {
317	addr64_t addr = IOMapper::gSystem->mapAddr(address);
318	ml_phys_write_half_64(addr, value);
319	}
320	else
321	ml_phys_write_half((vm_offset_t) address, value);
322	}
323
324	void IOMappedWrite32(IOPhysicalAddress address, UInt32 value)
325	{
326	IOMapper::checkForSystemMapper();
327
328	if (IOMapper::gSystem) {
329	addr64_t addr = IOMapper::gSystem->mapAddr(address);
330	ml_phys_write_word_64(addr, value);
331	}
332	else
333	ml_phys_write_word((vm_offset_t) address, value);
334	}
335
336	void IOMappedWrite64(IOPhysicalAddress address, UInt64 value)
337	{
338	IOMapper::checkForSystemMapper();
339
340	if (IOMapper::gSystem) {
341	addr64_t addr = IOMapper::gSystem->mapAddr(address);
342	ml_phys_write_double_64(addr, value);
343	}
344	else
345	ml_phys_write_double((vm_offset_t) address, value);
346	}
347
5d5c5d0d A	348	mach_vm_address_t IOMallocPhysical(mach_vm_size_t size, mach_vm_address_t mask)
	349	{
	350	mach_vm_address_t address = 0;
	351	if (gIOCopyMapper)
	352	{
	353	address = ptoa_64(gIOCopyMapper->iovmAlloc(atop_64(round_page(size))));
	354	}
	355
	356	return (address);
	357	}
	358
	359	void IOFreePhysical(mach_vm_address_t address, mach_vm_size_t size)
	360	{
	361	if (gIOCopyMapper)
	362	{
	363	gIOCopyMapper->iovmFree(atop_64(address), atop_64(round_page(size)));
	364	}
	365	}
	366
	367
55e303ae	368	__END_DECLS