[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 <IOKit/IODMACommand.h>
#include <libkern/c++/OSData.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);
OSMetaClassDefineReservedUsed(IOMapper, 1);
OSMetaClassDefineReservedUsed(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)
{
    OSObject * obj;
    if (!super::start(provider))
        return false;

    if (!initHardware(provider))
        return false;

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

    if (provider)
    {
    	obj = provider->getProperty("iommu-id");
	if (!obj)
	    obj = provider->getProperty("AAPL,phandle");
	if (obj)
	    setProperty(gIOMapperIDKey, obj);
    }
    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 ((uintptr_t) IOMapper::gSystem & kWaitMask)
        sMapperLock.sleep(&IOMapper::gSystem);
    sMapperLock.unlock();
}

IOMapper * IOMapper::copyMapperForDevice(IOService * device)
{
    OSObject * obj;
    IOMapper * mapper;
    OSDictionary * matching;
    
    obj = device->copyProperty("iommu-parent");
    if (!obj)
	return (NULL);

    if ((mapper = OSDynamicCast(IOMapper, obj)))
	return (mapper);

    matching = IOService::propertyMatching(gIOMapperIDKey, obj);
    if (matching)
    {
	mapper = OSDynamicCast(IOMapper, IOService::waitForMatchingService(matching));
    	matching->release();
    }
    if (mapper)
	device->setProperty("iommu-parent", mapper);
    else
	obj->release();
    
    return (mapper);
}

ppnum_t IOMapper::iovmAllocDMACommand(IODMACommand * command, IOItemCount pageCount)
{
	return (0);
}

void IOMapper::iovmFreeDMACommand(IODMACommand * command,
				  ppnum_t addr, IOItemCount pageCount)
{
}

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(size);
    kr = kmem_alloc_contig(kernel_map, &address, size, PAGE_MASK, 0 /*max_pnum*/, 0 /*pnum_mask*/, false);
    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(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);
}

__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>
b0d623f7	30	#include <IOKit/IODMACommand.h>
55e303ae A	31	#include <libkern/c++/OSData.h>
55e303ae A	32
0c530ab8 A	33	__BEGIN_DECLS
	34	extern ppnum_t pmap_find_phys(pmap_t pmap, addr64_t va);
	35	__END_DECLS
	36
55e303ae A	37	#define super IOService
	38	OSDefineMetaClassAndAbstractStructors(IOMapper, IOService);
	39
0c530ab8	40	OSMetaClassDefineReservedUsed(IOMapper, 0);
b0d623f7 A	41	OSMetaClassDefineReservedUsed(IOMapper, 1);
b0d623f7 A	42	OSMetaClassDefineReservedUsed(IOMapper, 2);
55e303ae A	43	OSMetaClassDefineReservedUnused(IOMapper, 3);
	44	OSMetaClassDefineReservedUnused(IOMapper, 4);
	45	OSMetaClassDefineReservedUnused(IOMapper, 5);
	46	OSMetaClassDefineReservedUnused(IOMapper, 6);
	47	OSMetaClassDefineReservedUnused(IOMapper, 7);
	48	OSMetaClassDefineReservedUnused(IOMapper, 8);
	49	OSMetaClassDefineReservedUnused(IOMapper, 9);
	50	OSMetaClassDefineReservedUnused(IOMapper, 10);
	51	OSMetaClassDefineReservedUnused(IOMapper, 11);
	52	OSMetaClassDefineReservedUnused(IOMapper, 12);
	53	OSMetaClassDefineReservedUnused(IOMapper, 13);
	54	OSMetaClassDefineReservedUnused(IOMapper, 14);
	55	OSMetaClassDefineReservedUnused(IOMapper, 15);
	56
	57	IOMapper * IOMapper::gSystem = (IOMapper *) IOMapper::kUnknown;
	58
	59	class IOMapperLock {
	60	IOLock *fWaitLock;
	61	public:
	62	IOMapperLock() { fWaitLock = IOLockAlloc(); };
	63	~IOMapperLock() { IOLockFree(fWaitLock); };
	64
	65	void lock() { IOLockLock(fWaitLock); };
	66	void unlock() { IOLockUnlock(fWaitLock); };
	67	void sleep(void *event) { IOLockSleep(fWaitLock, event, THREAD_UNINT); };
	68	void wakeup(void *event) { IOLockWakeup(fWaitLock, event, false); };
	69	};
	70
	71	static IOMapperLock sMapperLock;
	72
	73	bool IOMapper::start(IOService *provider)
	74	{
b0d623f7	75	OSObject * obj;
55e303ae A	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
b0d623f7 A	89	if (provider)
	90	{
	91	obj = provider->getProperty("iommu-id");
	92	if (!obj)
	93	obj = provider->getProperty("AAPL,phandle");
	94	if (obj)
	95	setProperty(gIOMapperIDKey, obj);
	96	}
55e303ae A	97	return true;
	98	}
	99
	100	bool IOMapper::allocTable(IOByteCount size)
	101	{
	102	assert(!fTable);
	103
	104	fTableSize = size;
	105	fTableHandle = NewARTTable(size, &fTable, &fTablePhys);
	106	return fTableHandle != 0;
	107	}
	108
	109	void IOMapper::free()
	110	{
	111	if (fTableHandle) {
	112	FreeARTTable(fTableHandle, fTableSize);
	113	fTableHandle = 0;
	114	}
	115
	116	super::free();
	117	}
	118
	119	void IOMapper::setMapperRequired(bool hasMapper)
	120	{
	121	if (hasMapper)
	122	IOMapper::gSystem = (IOMapper *) kHasMapper;
	123	else {
	124	sMapperLock.lock();
	125	IOMapper::gSystem = (IOMapper *) kNoMapper;
	126	sMapperLock.unlock();
	127	sMapperLock.wakeup(&IOMapper::gSystem);
	128	}
	129	}
	130
	131	void IOMapper::waitForSystemMapper()
	132	{
	133	sMapperLock.lock();
b0d623f7	134	while ((uintptr_t) IOMapper::gSystem & kWaitMask)
55e303ae A	135	sMapperLock.sleep(&IOMapper::gSystem);
	136	sMapperLock.unlock();
	137	}
	138
b0d623f7 A	139	IOMapper * IOMapper::copyMapperForDevice(IOService * device)
	140	{
	141	OSObject * obj;
	142	IOMapper * mapper;
	143	OSDictionary * matching;
	144
	145	obj = device->copyProperty("iommu-parent");
	146	if (!obj)
	147	return (NULL);
	148
	149	if ((mapper = OSDynamicCast(IOMapper, obj)))
	150	return (mapper);
	151
	152	matching = IOService::propertyMatching(gIOMapperIDKey, obj);
	153	if (matching)
	154	{
	155	mapper = OSDynamicCast(IOMapper, IOService::waitForMatchingService(matching));
	156	matching->release();
	157	}
	158	if (mapper)
	159	device->setProperty("iommu-parent", mapper);
	160	else
	161	obj->release();
	162
	163	return (mapper);
	164	}
	165
	166	ppnum_t IOMapper::iovmAllocDMACommand(IODMACommand * command, IOItemCount pageCount)
	167	{
	168	return (0);
	169	}
	170
	171	void IOMapper::iovmFreeDMACommand(IODMACommand * command,
	172	ppnum_t addr, IOItemCount pageCount)
	173	{
	174	}
	175
55e303ae A	176	void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
	177	ppnum_t *pageList, IOItemCount pageCount)
	178	{
	179	while (pageCount--)
	180	iovmInsert(addr, offset++, *pageList++);
	181	}
	182
	183	void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
	184	upl_page_info_t *pageList, IOItemCount pageCount)
	185	{
	186	for (IOItemCount i = 0; i < pageCount; i++)
	187	iovmInsert(addr, offset + i, pageList[i].phys_addr);
	188	}
	189
0c530ab8 A	190	OSData * IOMapper::
0c530ab8 A	191	NewARTTable(IOByteCount size, void ** virtAddrP, ppnum_t *physAddrP)
6601e61a	192	{
0c530ab8 A	193	if (!virtAddrP \|\| !physAddrP)
	194	return 0;
	195
55e303ae	196	kern_return_t kr;
0c530ab8	197	vm_address_t address;
55e303ae	198
b0d623f7 A	199	size = round_page(size);
b0d623f7 A	200	kr = kmem_alloc_contig(kernel_map, &address, size, PAGE_MASK, 0 /max_pnum/, 0 /pnum_mask/, false);
0c530ab8	201	if (kr)
55e303ae A	202	return 0;
55e303ae A	203
0c530ab8 A	204	ppnum_t pagenum = pmap_find_phys(kernel_pmap, (addr64_t) address);
	205	if (pagenum)
	206	*physAddrP = pagenum;
	207	else {
	208	FreeARTTable((OSData *) address, size);
	209	address = 0;
	210	}
55e303ae	211
0c530ab8	212	virtAddrP = (void ) address;
55e303ae	213
0c530ab8	214	return (OSData *) address;
55e303ae A	215	}
	216
	217	void IOMapper::FreeARTTable(OSData *artHandle, IOByteCount size)
	218	{
0c530ab8	219	vm_address_t address = (vm_address_t) artHandle;
21362eb3	220
b0d623f7	221	size = round_page(size);
0c530ab8 A	222	kmem_free(kernel_map, address, size); // Just panic if address is 0
0c530ab8 A	223	}
6601e61a	224
0c530ab8 A	225	bool IOMapper::getBypassMask(addr64_t *maskP) const
	226	{
	227	return false;
55e303ae A	228	}
	229
	230	__BEGIN_DECLS
	231
	232	// These are C accessors to the system mapper for non-IOKit clients
	233	ppnum_t IOMapperIOVMAlloc(unsigned pages)
	234	{
	235	IOMapper::checkForSystemMapper();
	236
	237	if (IOMapper::gSystem)
	238	return IOMapper::gSystem->iovmAlloc((IOItemCount) pages);
	239	else
	240	return 0;
	241	}
	242
	243	void IOMapperIOVMFree(ppnum_t addr, unsigned pages)
	244	{
	245	if (IOMapper::gSystem)
	246	IOMapper::gSystem->iovmFree(addr, (IOItemCount) pages);
	247	}
	248
	249	ppnum_t IOMapperInsertPage(ppnum_t addr, unsigned offset, ppnum_t page)
	250	{
	251	if (IOMapper::gSystem) {
	252	IOMapper::gSystem->iovmInsert(addr, (IOItemCount) offset, page);
	253	return addr + offset;
	254	}
	255	else
	256	return page;
	257	}
	258
	259	void IOMapperInsertPPNPages(ppnum_t addr, unsigned offset,
	260	ppnum_t *pageList, unsigned pageCount)
	261	{
	262	if (!IOMapper::gSystem)
	263	panic("IOMapperInsertPPNPages no system mapper");
	264	else
	265	assert(!((vm_address_t) IOMapper::gSystem & 3));
	266
	267	IOMapper::gSystem->
	268	iovmInsert(addr, (IOItemCount) offset, pageList, pageCount);
	269	}
	270
	271	void IOMapperInsertUPLPages(ppnum_t addr, unsigned offset,
	272	upl_page_info_t *pageList, unsigned pageCount)
	273	{
	274	if (!IOMapper::gSystem)
	275	panic("IOMapperInsertUPLPages no system mapper");
	276	else
	277	assert(!((vm_address_t) IOMapper::gSystem & 3));
	278
	279	IOMapper::gSystem->iovmInsert(addr,
	280	(IOItemCount) offset,
	281	pageList,
	282	(IOItemCount) pageCount);
	283	}
	284
	285	/////////////////////////////////////////////////////////////////////////////
	286	//
	287	//
	288	// IOLib.h APIs
	289	//
	290	//
	291	/////////////////////////////////////////////////////////////////////////////
292
293	#include <machine/machine_routines.h>
294
295	UInt8 IOMappedRead8(IOPhysicalAddress address)
296	{
297	IOMapper::checkForSystemMapper();
298
299	if (IOMapper::gSystem) {
300	addr64_t addr = IOMapper::gSystem->mapAddr(address);
301	return (UInt8) ml_phys_read_byte_64(addr);
302	}
303	else
304	return (UInt8) ml_phys_read_byte((vm_offset_t) address);
305	}
306
307	UInt16 IOMappedRead16(IOPhysicalAddress address)
308	{
309	IOMapper::checkForSystemMapper();
310
311	if (IOMapper::gSystem) {
312	addr64_t addr = IOMapper::gSystem->mapAddr(address);
313	return (UInt16) ml_phys_read_half_64(addr);
314	}
315	else
316	return (UInt16) ml_phys_read_half((vm_offset_t) address);
317	}
318
319	UInt32 IOMappedRead32(IOPhysicalAddress address)
320	{
321	IOMapper::checkForSystemMapper();
322
323	if (IOMapper::gSystem) {
324	addr64_t addr = IOMapper::gSystem->mapAddr(address);
325	return (UInt32) ml_phys_read_word_64(addr);
326	}
327	else
328	return (UInt32) ml_phys_read_word((vm_offset_t) address);
329	}
330
331	UInt64 IOMappedRead64(IOPhysicalAddress address)
332	{
333	IOMapper::checkForSystemMapper();
334
335	if (IOMapper::gSystem) {
336	addr64_t addr = IOMapper::gSystem->mapAddr(address);
337	return (UInt64) ml_phys_read_double_64(addr);
338	}
339	else
340	return (UInt64) ml_phys_read_double((vm_offset_t) address);
341	}
342
343	void IOMappedWrite8(IOPhysicalAddress address, UInt8 value)
344	{
345	IOMapper::checkForSystemMapper();
346
347	if (IOMapper::gSystem) {
348	addr64_t addr = IOMapper::gSystem->mapAddr(address);
349	ml_phys_write_byte_64(addr, value);
350	}
351	else
352	ml_phys_write_byte((vm_offset_t) address, value);
353	}
354
355	void IOMappedWrite16(IOPhysicalAddress address, UInt16 value)
356	{
357	IOMapper::checkForSystemMapper();
358
359	if (IOMapper::gSystem) {
360	addr64_t addr = IOMapper::gSystem->mapAddr(address);
361	ml_phys_write_half_64(addr, value);
362	}
363	else
364	ml_phys_write_half((vm_offset_t) address, value);
365	}
366
367	void IOMappedWrite32(IOPhysicalAddress address, UInt32 value)
368	{
369	IOMapper::checkForSystemMapper();
370
371	if (IOMapper::gSystem) {
372	addr64_t addr = IOMapper::gSystem->mapAddr(address);
373	ml_phys_write_word_64(addr, value);
374	}
375	else
376	ml_phys_write_word((vm_offset_t) address, value);
377	}
378
379	void IOMappedWrite64(IOPhysicalAddress address, UInt64 value)
380	{
381	IOMapper::checkForSystemMapper();
382
383	if (IOMapper::gSystem) {
384	addr64_t addr = IOMapper::gSystem->mapAddr(address);
385	ml_phys_write_double_64(addr, value);
386	}
387	else
388	ml_phys_write_double((vm_offset_t) address, value);
389	}
390
391	__END_DECLS