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

/*
 * Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_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_OSREFERENCE_LICENSE_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, 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	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
55e303ae	5	*
2d21ac55 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 License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
8f6c56a5	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
55e303ae A	27	*/
	28	#include <IOKit/IOLib.h>
	29	#include <IOKit/IOMapper.h>
	30	#include <libkern/c++/OSData.h>
	31
0c530ab8 A	32	#include "IOCopyMapper.h"
	33
	34	__BEGIN_DECLS
	35	extern ppnum_t pmap_find_phys(pmap_t pmap, addr64_t va);
	36	__END_DECLS
	37
55e303ae A	38	#define super IOService
	39	OSDefineMetaClassAndAbstractStructors(IOMapper, IOService);
	40
0c530ab8	41	OSMetaClassDefineReservedUsed(IOMapper, 0);
55e303ae A	42	OSMetaClassDefineReservedUnused(IOMapper, 1);
	43	OSMetaClassDefineReservedUnused(IOMapper, 2);
	44	OSMetaClassDefineReservedUnused(IOMapper, 3);
	45	OSMetaClassDefineReservedUnused(IOMapper, 4);
	46	OSMetaClassDefineReservedUnused(IOMapper, 5);
	47	OSMetaClassDefineReservedUnused(IOMapper, 6);
	48	OSMetaClassDefineReservedUnused(IOMapper, 7);
	49	OSMetaClassDefineReservedUnused(IOMapper, 8);
	50	OSMetaClassDefineReservedUnused(IOMapper, 9);
	51	OSMetaClassDefineReservedUnused(IOMapper, 10);
	52	OSMetaClassDefineReservedUnused(IOMapper, 11);
	53	OSMetaClassDefineReservedUnused(IOMapper, 12);
	54	OSMetaClassDefineReservedUnused(IOMapper, 13);
	55	OSMetaClassDefineReservedUnused(IOMapper, 14);
	56	OSMetaClassDefineReservedUnused(IOMapper, 15);
	57
	58	IOMapper * IOMapper::gSystem = (IOMapper *) IOMapper::kUnknown;
	59
	60	class IOMapperLock {
	61	IOLock *fWaitLock;
	62	public:
	63	IOMapperLock() { fWaitLock = IOLockAlloc(); };
	64	~IOMapperLock() { IOLockFree(fWaitLock); };
	65
	66	void lock() { IOLockLock(fWaitLock); };
	67	void unlock() { IOLockUnlock(fWaitLock); };
	68	void sleep(void *event) { IOLockSleep(fWaitLock, event, THREAD_UNINT); };
	69	void wakeup(void *event) { IOLockWakeup(fWaitLock, event, false); };
	70	};
	71
	72	static IOMapperLock sMapperLock;
	73
	74	bool IOMapper::start(IOService *provider)
	75	{
	76	if (!super::start(provider))
	77	return false;
	78
	79	if (!initHardware(provider))
	80	return false;
	81
	82	if (fIsSystem) {
	83	sMapperLock.lock();
	84	IOMapper::gSystem = this;
	85	sMapperLock.wakeup(&IOMapper::gSystem);
	86	sMapperLock.unlock();
	87	}
	88
	89	return true;
	90	}
	91
	92	bool IOMapper::allocTable(IOByteCount size)
	93	{
	94	assert(!fTable);
	95
	96	fTableSize = size;
	97	fTableHandle = NewARTTable(size, &fTable, &fTablePhys);
	98	return fTableHandle != 0;
	99	}
	100
	101	void IOMapper::free()
	102	{
	103	if (fTableHandle) {
	104	FreeARTTable(fTableHandle, fTableSize);
	105	fTableHandle = 0;
106	}
107
108	super::free();
109	}
110
111	void IOMapper::setMapperRequired(bool hasMapper)
112	{
113	if (hasMapper)
114	IOMapper::gSystem = (IOMapper *) kHasMapper;
115	else {
116	sMapperLock.lock();
117	IOMapper::gSystem = (IOMapper *) kNoMapper;
118	sMapperLock.unlock();
119	sMapperLock.wakeup(&IOMapper::gSystem);
120	}
121	}
122
123	void IOMapper::waitForSystemMapper()
124	{
125	sMapperLock.lock();
126	while ((vm_address_t) IOMapper::gSystem & kWaitMask)
127	sMapperLock.sleep(&IOMapper::gSystem);
128	sMapperLock.unlock();
129	}
130
131	void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
132	ppnum_t *pageList, IOItemCount pageCount)
133	{
134	while (pageCount--)
135	iovmInsert(addr, offset++, *pageList++);
136	}
137
138	void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
139	upl_page_info_t *pageList, IOItemCount pageCount)
140	{
141	for (IOItemCount i = 0; i < pageCount; i++)
142	iovmInsert(addr, offset + i, pageList[i].phys_addr);
143	}
144
0c530ab8 A	145	OSData * IOMapper::
0c530ab8 A	146	NewARTTable(IOByteCount size, void ** virtAddrP, ppnum_t *physAddrP)
6601e61a	147	{
0c530ab8 A	148	if (!virtAddrP \|\| !physAddrP)
	149	return 0;
	150
55e303ae	151	kern_return_t kr;
0c530ab8	152	vm_address_t address;
55e303ae	153
55e303ae	154	size = round_page_32(size);
2d21ac55	155	kr = kmem_alloc_contig(kernel_map, &address, size, PAGE_MASK, 0, 0);
0c530ab8	156	if (kr)
55e303ae A	157	return 0;
55e303ae A	158
0c530ab8 A	159	ppnum_t pagenum = pmap_find_phys(kernel_pmap, (addr64_t) address);
	160	if (pagenum)
	161	*physAddrP = pagenum;
	162	else {
	163	FreeARTTable((OSData *) address, size);
	164	address = 0;
	165	}
55e303ae	166
0c530ab8	167	virtAddrP = (void ) address;
55e303ae	168
0c530ab8	169	return (OSData *) address;
55e303ae A	170	}
	171
	172	void IOMapper::FreeARTTable(OSData *artHandle, IOByteCount size)
	173	{
0c530ab8	174	vm_address_t address = (vm_address_t) artHandle;
21362eb3	175
0c530ab8 A	176	size = round_page_32(size);
	177	kmem_free(kernel_map, address, size); // Just panic if address is 0
	178	}
6601e61a	179
0c530ab8 A	180	bool IOMapper::getBypassMask(addr64_t *maskP) const
	181	{
	182	return false;
55e303ae A	183	}
	184
	185	__BEGIN_DECLS
	186
	187	// These are C accessors to the system mapper for non-IOKit clients
	188	ppnum_t IOMapperIOVMAlloc(unsigned pages)
	189	{
	190	IOMapper::checkForSystemMapper();
	191
	192	if (IOMapper::gSystem)
	193	return IOMapper::gSystem->iovmAlloc((IOItemCount) pages);
	194	else
	195	return 0;
	196	}
	197
	198	void IOMapperIOVMFree(ppnum_t addr, unsigned pages)
	199	{
	200	if (IOMapper::gSystem)
	201	IOMapper::gSystem->iovmFree(addr, (IOItemCount) pages);
	202	}
	203
	204	ppnum_t IOMapperInsertPage(ppnum_t addr, unsigned offset, ppnum_t page)
	205	{
	206	if (IOMapper::gSystem) {
	207	IOMapper::gSystem->iovmInsert(addr, (IOItemCount) offset, page);
	208	return addr + offset;
	209	}
	210	else
	211	return page;
	212	}
	213
	214	void IOMapperInsertPPNPages(ppnum_t addr, unsigned offset,
	215	ppnum_t *pageList, unsigned pageCount)
	216	{
	217	if (!IOMapper::gSystem)
	218	panic("IOMapperInsertPPNPages no system mapper");
	219	else
	220	assert(!((vm_address_t) IOMapper::gSystem & 3));
	221
	222	IOMapper::gSystem->
	223	iovmInsert(addr, (IOItemCount) offset, pageList, pageCount);
	224	}
	225
	226	void IOMapperInsertUPLPages(ppnum_t addr, unsigned offset,
	227	upl_page_info_t *pageList, unsigned pageCount)
	228	{
	229	if (!IOMapper::gSystem)
	230	panic("IOMapperInsertUPLPages no system mapper");
	231	else
	232	assert(!((vm_address_t) IOMapper::gSystem & 3));
	233
	234	IOMapper::gSystem->iovmInsert(addr,
	235	(IOItemCount) offset,
	236	pageList,
	237	(IOItemCount) pageCount);
	238	}
	239
	240	/////////////////////////////////////////////////////////////////////////////
	241	//
	242	//
	243	// IOLib.h APIs
	244	//
	245	//
	246	/////////////////////////////////////////////////////////////////////////////
247
248	#include <machine/machine_routines.h>
249
250	UInt8 IOMappedRead8(IOPhysicalAddress address)
251	{
252	IOMapper::checkForSystemMapper();
253
254	if (IOMapper::gSystem) {
255	addr64_t addr = IOMapper::gSystem->mapAddr(address);
256	return (UInt8) ml_phys_read_byte_64(addr);
257	}
258	else
259	return (UInt8) ml_phys_read_byte((vm_offset_t) address);
260	}
261
262	UInt16 IOMappedRead16(IOPhysicalAddress address)
263	{
264	IOMapper::checkForSystemMapper();
265
266	if (IOMapper::gSystem) {
267	addr64_t addr = IOMapper::gSystem->mapAddr(address);
268	return (UInt16) ml_phys_read_half_64(addr);
269	}
270	else
271	return (UInt16) ml_phys_read_half((vm_offset_t) address);
272	}
273
274	UInt32 IOMappedRead32(IOPhysicalAddress address)
275	{
276	IOMapper::checkForSystemMapper();
277
278	if (IOMapper::gSystem) {
279	addr64_t addr = IOMapper::gSystem->mapAddr(address);
280	return (UInt32) ml_phys_read_word_64(addr);
281	}
282	else
283	return (UInt32) ml_phys_read_word((vm_offset_t) address);
284	}
285
286	UInt64 IOMappedRead64(IOPhysicalAddress address)
287	{
288	IOMapper::checkForSystemMapper();
289
290	if (IOMapper::gSystem) {
291	addr64_t addr = IOMapper::gSystem->mapAddr(address);
292	return (UInt64) ml_phys_read_double_64(addr);
293	}
294	else
295	return (UInt64) ml_phys_read_double((vm_offset_t) address);
296	}
297
298	void IOMappedWrite8(IOPhysicalAddress address, UInt8 value)
299	{
300	IOMapper::checkForSystemMapper();
301
302	if (IOMapper::gSystem) {
303	addr64_t addr = IOMapper::gSystem->mapAddr(address);
304	ml_phys_write_byte_64(addr, value);
305	}
306	else
307	ml_phys_write_byte((vm_offset_t) address, value);
308	}
309
310	void IOMappedWrite16(IOPhysicalAddress address, UInt16 value)
311	{
312	IOMapper::checkForSystemMapper();
313
314	if (IOMapper::gSystem) {
315	addr64_t addr = IOMapper::gSystem->mapAddr(address);
316	ml_phys_write_half_64(addr, value);
317	}
318	else
319	ml_phys_write_half((vm_offset_t) address, value);
320	}
321
322	void IOMappedWrite32(IOPhysicalAddress address, UInt32 value)
323	{
324	IOMapper::checkForSystemMapper();
325
326	if (IOMapper::gSystem) {
327	addr64_t addr = IOMapper::gSystem->mapAddr(address);
328	ml_phys_write_word_64(addr, value);
329	}
330	else
331	ml_phys_write_word((vm_offset_t) address, value);
332	}
333
334	void IOMappedWrite64(IOPhysicalAddress address, UInt64 value)
335	{
336	IOMapper::checkForSystemMapper();
337
338	if (IOMapper::gSystem) {
339	addr64_t addr = IOMapper::gSystem->mapAddr(address);
340	ml_phys_write_double_64(addr, value);
341	}
342	else
343	ml_phys_write_double((vm_offset_t) address, value);
344	}
345
0c530ab8 A	346	mach_vm_address_t IOMallocPhysical(mach_vm_size_t size, mach_vm_address_t mask)
	347	{
	348	mach_vm_address_t address = 0;
	349	if (gIOCopyMapper)
	350	{
	351	address = ptoa_64(gIOCopyMapper->iovmAlloc(atop_64(round_page(size))));
	352	}
0c530ab8 A	353	return (address);
	354	}
	355
	356	void IOFreePhysical(mach_vm_address_t address, mach_vm_size_t size)
	357	{
	358	if (gIOCopyMapper)
	359	{
	360	gIOCopyMapper->iovmFree(atop_64(address), atop_64(round_page(size)));
	361	}
	362	}
	363
	364
55e303ae	365	__END_DECLS