[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>
#include <libkern/OSDebug.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);
OSMetaClassDefineReservedUsed(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)
    {
		OSReportWithBacktrace("waitForSystemMapper");
        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)
{
}

ppnum_t IOMapper::iovmMapMemory(
    			  OSObject                    * memory,   // dma command or iomd
			  ppnum_t                       offsetPage,
			  ppnum_t                       pageCount,
			  uint32_t                      options,
			  upl_page_info_t             * pageList,
			  const IODMAMapSpecification * mapSpecification)
{
    return (0);
}

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) {
		if (!addr) panic("!addr");
        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	31	#include <libkern/c++/OSData.h>
99c3a104	32	#include <libkern/OSDebug.h>
55e303ae	33
0c530ab8 A	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);
b0d623f7 A	42	OSMetaClassDefineReservedUsed(IOMapper, 1);
b0d623f7 A	43	OSMetaClassDefineReservedUsed(IOMapper, 2);
99c3a104	44	OSMetaClassDefineReservedUsed(IOMapper, 3);
55e303ae A	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	{
b0d623f7	76	OSObject * obj;
55e303ae A	77	if (!super::start(provider))
	78	return false;
	79
	80	if (!initHardware(provider))
	81	return false;
	82
	83	if (fIsSystem) {
	84	sMapperLock.lock();
	85	IOMapper::gSystem = this;
	86	sMapperLock.wakeup(&IOMapper::gSystem);
	87	sMapperLock.unlock();
	88	}
	89
b0d623f7 A	90	if (provider)
	91	{
	92	obj = provider->getProperty("iommu-id");
	93	if (!obj)
	94	obj = provider->getProperty("AAPL,phandle");
	95	if (obj)
	96	setProperty(gIOMapperIDKey, obj);
	97	}
55e303ae A	98	return true;
	99	}
	100
	101	bool IOMapper::allocTable(IOByteCount size)
	102	{
	103	assert(!fTable);
	104
	105	fTableSize = size;
	106	fTableHandle = NewARTTable(size, &fTable, &fTablePhys);
	107	return fTableHandle != 0;
	108	}
	109
	110	void IOMapper::free()
	111	{
	112	if (fTableHandle) {
	113	FreeARTTable(fTableHandle, fTableSize);
	114	fTableHandle = 0;
	115	}
	116
	117	super::free();
	118	}
	119
	120	void IOMapper::setMapperRequired(bool hasMapper)
	121	{
	122	if (hasMapper)
	123	IOMapper::gSystem = (IOMapper *) kHasMapper;
	124	else {
	125	sMapperLock.lock();
	126	IOMapper::gSystem = (IOMapper *) kNoMapper;
	127	sMapperLock.unlock();
	128	sMapperLock.wakeup(&IOMapper::gSystem);
	129	}
	130	}
	131
	132	void IOMapper::waitForSystemMapper()
	133	{
	134	sMapperLock.lock();
b0d623f7	135	while ((uintptr_t) IOMapper::gSystem & kWaitMask)
99c3a104 A	136	{
99c3a104 A	137	OSReportWithBacktrace("waitForSystemMapper");
55e303ae	138	sMapperLock.sleep(&IOMapper::gSystem);
99c3a104	139	}
55e303ae A	140	sMapperLock.unlock();
	141	}
	142
b0d623f7 A	143	IOMapper * IOMapper::copyMapperForDevice(IOService * device)
	144	{
	145	OSObject * obj;
	146	IOMapper * mapper;
	147	OSDictionary * matching;
	148
	149	obj = device->copyProperty("iommu-parent");
	150	if (!obj)
	151	return (NULL);
	152
	153	if ((mapper = OSDynamicCast(IOMapper, obj)))
	154	return (mapper);
	155
	156	matching = IOService::propertyMatching(gIOMapperIDKey, obj);
	157	if (matching)
	158	{
	159	mapper = OSDynamicCast(IOMapper, IOService::waitForMatchingService(matching));
	160	matching->release();
	161	}
	162	if (mapper)
	163	device->setProperty("iommu-parent", mapper);
	164	else
	165	obj->release();
	166
	167	return (mapper);
	168	}
	169
	170	ppnum_t IOMapper::iovmAllocDMACommand(IODMACommand * command, IOItemCount pageCount)
	171	{
99c3a104	172	return (0);
b0d623f7 A	173	}
	174
	175	void IOMapper::iovmFreeDMACommand(IODMACommand * command,
	176	ppnum_t addr, IOItemCount pageCount)
	177	{
	178	}
	179
99c3a104 A	180	ppnum_t IOMapper::iovmMapMemory(
	181	OSObject * memory, // dma command or iomd
	182	ppnum_t offsetPage,
	183	ppnum_t pageCount,
	184	uint32_t options,
	185	upl_page_info_t * pageList,
	186	const IODMAMapSpecification * mapSpecification)
	187	{
	188	return (0);
	189	}
	190
55e303ae A	191	void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
	192	ppnum_t *pageList, IOItemCount pageCount)
	193	{
	194	while (pageCount--)
	195	iovmInsert(addr, offset++, *pageList++);
	196	}
	197
	198	void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
	199	upl_page_info_t *pageList, IOItemCount pageCount)
	200	{
	201	for (IOItemCount i = 0; i < pageCount; i++)
	202	iovmInsert(addr, offset + i, pageList[i].phys_addr);
	203	}
	204
0c530ab8 A	205	OSData * IOMapper::
0c530ab8 A	206	NewARTTable(IOByteCount size, void ** virtAddrP, ppnum_t *physAddrP)
6601e61a	207	{
0c530ab8 A	208	if (!virtAddrP \|\| !physAddrP)
	209	return 0;
	210
55e303ae	211	kern_return_t kr;
0c530ab8	212	vm_address_t address;
55e303ae	213
b0d623f7 A	214	size = round_page(size);
b0d623f7 A	215	kr = kmem_alloc_contig(kernel_map, &address, size, PAGE_MASK, 0 /max_pnum/, 0 /pnum_mask/, false);
0c530ab8	216	if (kr)
55e303ae A	217	return 0;
55e303ae A	218
0c530ab8 A	219	ppnum_t pagenum = pmap_find_phys(kernel_pmap, (addr64_t) address);
	220	if (pagenum)
	221	*physAddrP = pagenum;
	222	else {
	223	FreeARTTable((OSData *) address, size);
	224	address = 0;
	225	}
55e303ae	226
0c530ab8	227	virtAddrP = (void ) address;
55e303ae	228
0c530ab8	229	return (OSData *) address;
55e303ae A	230	}
	231
	232	void IOMapper::FreeARTTable(OSData *artHandle, IOByteCount size)
	233	{
0c530ab8	234	vm_address_t address = (vm_address_t) artHandle;
21362eb3	235
b0d623f7	236	size = round_page(size);
0c530ab8 A	237	kmem_free(kernel_map, address, size); // Just panic if address is 0
0c530ab8 A	238	}
6601e61a	239
0c530ab8 A	240	bool IOMapper::getBypassMask(addr64_t *maskP) const
	241	{
	242	return false;
55e303ae A	243	}
	244
	245	__BEGIN_DECLS
	246
	247	// These are C accessors to the system mapper for non-IOKit clients
	248	ppnum_t IOMapperIOVMAlloc(unsigned pages)
	249	{
	250	IOMapper::checkForSystemMapper();
	251
	252	if (IOMapper::gSystem)
	253	return IOMapper::gSystem->iovmAlloc((IOItemCount) pages);
	254	else
	255	return 0;
	256	}
	257
	258	void IOMapperIOVMFree(ppnum_t addr, unsigned pages)
	259	{
	260	if (IOMapper::gSystem)
	261	IOMapper::gSystem->iovmFree(addr, (IOItemCount) pages);
	262	}
	263
	264	ppnum_t IOMapperInsertPage(ppnum_t addr, unsigned offset, ppnum_t page)
	265	{
	266	if (IOMapper::gSystem) {
99c3a104	267	if (!addr) panic("!addr");
55e303ae A	268	IOMapper::gSystem->iovmInsert(addr, (IOItemCount) offset, page);
	269	return addr + offset;
	270	}
	271	else
	272	return page;
	273	}
	274
	275	void IOMapperInsertPPNPages(ppnum_t addr, unsigned offset,
	276	ppnum_t *pageList, unsigned pageCount)
	277	{
	278	if (!IOMapper::gSystem)
	279	panic("IOMapperInsertPPNPages no system mapper");
	280	else
	281	assert(!((vm_address_t) IOMapper::gSystem & 3));
	282
	283	IOMapper::gSystem->
	284	iovmInsert(addr, (IOItemCount) offset, pageList, pageCount);
	285	}
	286
	287	void IOMapperInsertUPLPages(ppnum_t addr, unsigned offset,
	288	upl_page_info_t *pageList, unsigned pageCount)
	289	{
	290	if (!IOMapper::gSystem)
	291	panic("IOMapperInsertUPLPages no system mapper");
	292	else
	293	assert(!((vm_address_t) IOMapper::gSystem & 3));
	294
	295	IOMapper::gSystem->iovmInsert(addr,
	296	(IOItemCount) offset,
	297	pageList,
	298	(IOItemCount) pageCount);
	299	}
	300
	301	/////////////////////////////////////////////////////////////////////////////
	302	//
	303	//
	304	// IOLib.h APIs
	305	//
	306	//
	307	/////////////////////////////////////////////////////////////////////////////
	308
	309	#include <machine/machine_routines.h>
	310
	311	UInt8 IOMappedRead8(IOPhysicalAddress address)
	312	{
	313	IOMapper::checkForSystemMapper();
	314
	315	if (IOMapper::gSystem) {
	316	addr64_t addr = IOMapper::gSystem->mapAddr(address);
	317	return (UInt8) ml_phys_read_byte_64(addr);
	318	}
	319	else
	320	return (UInt8) ml_phys_read_byte((vm_offset_t) address);
	321	}
	322
	323	UInt16 IOMappedRead16(IOPhysicalAddress address)
	324	{
	325	IOMapper::checkForSystemMapper();
	326
	327	if (IOMapper::gSystem) {
	328	addr64_t addr = IOMapper::gSystem->mapAddr(address);
	329	return (UInt16) ml_phys_read_half_64(addr);
	330	}
	331	else
332	return (UInt16) ml_phys_read_half((vm_offset_t) address);
333	}
334
335	UInt32 IOMappedRead32(IOPhysicalAddress address)
336	{
337	IOMapper::checkForSystemMapper();
338
339	if (IOMapper::gSystem) {
340	addr64_t addr = IOMapper::gSystem->mapAddr(address);
341	return (UInt32) ml_phys_read_word_64(addr);
342	}
343	else
344	return (UInt32) ml_phys_read_word((vm_offset_t) address);
345	}
346
347	UInt64 IOMappedRead64(IOPhysicalAddress address)
348	{
349	IOMapper::checkForSystemMapper();
350
351	if (IOMapper::gSystem) {
352	addr64_t addr = IOMapper::gSystem->mapAddr(address);
353	return (UInt64) ml_phys_read_double_64(addr);
354	}
355	else
356	return (UInt64) ml_phys_read_double((vm_offset_t) address);
357	}
358
359	void IOMappedWrite8(IOPhysicalAddress address, UInt8 value)
360	{
361	IOMapper::checkForSystemMapper();
362
363	if (IOMapper::gSystem) {
364	addr64_t addr = IOMapper::gSystem->mapAddr(address);
365	ml_phys_write_byte_64(addr, value);
366	}
367	else
368	ml_phys_write_byte((vm_offset_t) address, value);
369	}
370
371	void IOMappedWrite16(IOPhysicalAddress address, UInt16 value)
372	{
373	IOMapper::checkForSystemMapper();
374
375	if (IOMapper::gSystem) {
376	addr64_t addr = IOMapper::gSystem->mapAddr(address);
377	ml_phys_write_half_64(addr, value);
378	}
379	else
380	ml_phys_write_half((vm_offset_t) address, value);
381	}
382
383	void IOMappedWrite32(IOPhysicalAddress address, UInt32 value)
384	{
385	IOMapper::checkForSystemMapper();
386
387	if (IOMapper::gSystem) {
388	addr64_t addr = IOMapper::gSystem->mapAddr(address);
389	ml_phys_write_word_64(addr, value);
390	}
391	else
392	ml_phys_write_word((vm_offset_t) address, value);
393	}
394
395	void IOMappedWrite64(IOPhysicalAddress address, UInt64 value)
396	{
397	IOMapper::checkForSystemMapper();
398
399	if (IOMapper::gSystem) {
400	addr64_t addr = IOMapper::gSystem->mapAddr(address);
401	ml_phys_write_double_64(addr, value);
402	}
403	else
404	ml_phys_write_double((vm_offset_t) address, value);
405	}
406
407	__END_DECLS