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

/*
 * Copyright (c) 1998-2016 Apple 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@
 */

#define IOKIT_ENABLE_SHARED_PTR

#include <IOKit/IOLib.h>
#include <IOKit/IOMapper.h>
#include <IOKit/IODMACommand.h>
#include <libkern/c++/OSData.h>
#include <libkern/OSDebug.h>
#include <mach_debug/zone_info.h>
#include "IOKitKernelInternal.h"

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

#define super IOService
OSDefineMetaClassAndAbstractStructors(IOMapper, IOService);

OSMetaClassDefineReservedUnused(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)
{
	OSSharedPtr<OSObject> obj;
	if (!super::start(provider)) {
		return false;
	}

	if (!initHardware(provider)) {
		return false;
	}

	uint64_t pageSize = getPageSize();
	assert(pageSize <= UINT_MAX);
	fPageSize = (uint32_t) pageSize;

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

	if (provider) {
		obj = provider->copyProperty("iommu-id");
		if (!obj) {
			obj = provider->copyProperty("AAPL,phandle");
		}
		if (obj) {
			setProperty(gIOMapperIDKey, obj.get());
		}
	}
	return true;
}

void
IOMapper::free()
{
	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();
}

OSSharedPtr<IOMapper>
IOMapper::copyMapperForDevice(IOService * device)
{
	return copyMapperForDeviceWithIndex(device, 0);
}

OSSharedPtr<IOMapper>
IOMapper::copyMapperForDeviceWithIndex(IOService * device, unsigned int index)
{
	OSSharedPtr<OSData> data;
	OSSharedPtr<OSObject> obj;
	OSSharedPtr<IOMapper> mapper;
	OSSharedPtr<OSDictionary> matching;

	obj = device->copyProperty("iommu-parent");
	if (!obj) {
		return NULL;
	}

	if ((mapper = OSDynamicPtrCast<IOMapper>(obj))) {
		goto found;
	}

	if ((data = OSDynamicPtrCast<OSData>(obj))) {
		if (index >= data->getLength() / sizeof(UInt32)) {
			goto found;
		}

		data = OSData::withBytesNoCopy((UInt32 *)data->getBytesNoCopy() + index, sizeof(UInt32));
		if (!data) {
			goto found;
		}

		matching = IOService::propertyMatching(gIOMapperIDKey, data.get());
	} else {
		matching = IOService::propertyMatching(gIOMapperIDKey, obj.get());
	}

	if (matching) {
		mapper = OSDynamicPtrCast<IOMapper>(IOService::waitForMatchingService(matching.get()));
	}

found:
	if (mapper) {
		if (!mapper->fAllocName) {
			char name[MACH_ZONE_NAME_MAX_LEN];
			char kmodname[KMOD_MAX_NAME];
			vm_tag_t tag;
			uint32_t kmodid;

			tag = IOMemoryTag(kernel_map);
			if (!(kmodid = vm_tag_get_kext(tag, &kmodname[0], KMOD_MAX_NAME))) {
				snprintf(kmodname, sizeof(kmodname), "%d", tag);
			}
			snprintf(name, sizeof(name), "%s.DMA.%s", kmodname, device->getName());
			mapper->fAllocName = kern_allocation_name_allocate(name, 16);
		}
	}

	return mapper;
}

__BEGIN_DECLS

// These are C accessors to the system mapper for non-IOKit clients
ppnum_t
IOMapperIOVMAlloc(unsigned pages)
{
	IOReturn ret;
	uint64_t dmaAddress, dmaLength;

	IOMapper::checkForSystemMapper();

	ret = kIOReturnUnsupported;
	if (IOMapper::gSystem) {
		ret = IOMapper::gSystem->iovmMapMemory(
			NULL, 0, ptoa_64(pages),
			(kIODMAMapReadAccess | kIODMAMapWriteAccess),
			NULL, NULL, NULL,
			&dmaAddress, &dmaLength);
	}

	if (kIOReturnSuccess == ret) {
		uint64_t dmaAddressPage64;
		dmaAddressPage64 = atop_64(dmaAddress);
		if (dmaAddressPage64 > UINT_MAX) {
			return 0;
		}
		return (ppnum_t) atop_64(dmaAddress);
	}
	return 0;
}

void
IOMapperIOVMFree(ppnum_t addr, unsigned pages)
{
	if (IOMapper::gSystem) {
		IOMapper::gSystem->iovmUnmapMemory(NULL, NULL, ptoa_64(addr), ptoa_64(pages));
	}
}

ppnum_t
IOMapperInsertPage(ppnum_t addr, unsigned offset, ppnum_t page)
{
	if (!IOMapper::gSystem) {
		return page;
	}
	if (!addr) {
		panic("!addr");
	}
	IOMapper::gSystem->iovmInsert((kIODMAMapReadAccess | kIODMAMapWriteAccess),
	    ptoa_64(addr), ptoa_64(offset), ptoa_64(page), ptoa_64(1));
	return addr + offset;
}

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

#include <machine/machine_routines.h>

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

	if (IOMapper::gSystem) {
		addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(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->mapToPhysicalAddress(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->mapToPhysicalAddress(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->mapToPhysicalAddress(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->mapToPhysicalAddress(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->mapToPhysicalAddress(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->mapToPhysicalAddress(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->mapToPhysicalAddress(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	/*
39037602	2	* Copyright (c) 1998-2016 Apple Inc. All rights reserved.
55e303ae	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
0a7de745	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.
0a7de745	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
2d21ac55 A	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
0a7de745	17	*
2d21ac55 A	18	* The Original Code and all software distributed under the License are
2d21ac55 A	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.
0a7de745	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
55e303ae	27	*/
f427ee49 A	28
	29	#define IOKIT_ENABLE_SHARED_PTR
	30
55e303ae A	31	#include <IOKit/IOLib.h>
55e303ae A	32	#include <IOKit/IOMapper.h>
b0d623f7	33	#include <IOKit/IODMACommand.h>
55e303ae	34	#include <libkern/c++/OSData.h>
99c3a104	35	#include <libkern/OSDebug.h>
5ba3f43e	36	#include <mach_debug/zone_info.h>
3e170ce0	37	#include "IOKitKernelInternal.h"
55e303ae	38
0c530ab8 A	39	__BEGIN_DECLS
	40	extern ppnum_t pmap_find_phys(pmap_t pmap, addr64_t va);
	41	__END_DECLS
	42
55e303ae A	43	#define super IOService
	44	OSDefineMetaClassAndAbstractStructors(IOMapper, IOService);
	45
3e170ce0 A	46	OSMetaClassDefineReservedUnused(IOMapper, 0);
	47	OSMetaClassDefineReservedUnused(IOMapper, 1);
	48	OSMetaClassDefineReservedUnused(IOMapper, 2);
	49	OSMetaClassDefineReservedUnused(IOMapper, 3);
55e303ae A	50	OSMetaClassDefineReservedUnused(IOMapper, 4);
	51	OSMetaClassDefineReservedUnused(IOMapper, 5);
	52	OSMetaClassDefineReservedUnused(IOMapper, 6);
	53	OSMetaClassDefineReservedUnused(IOMapper, 7);
	54	OSMetaClassDefineReservedUnused(IOMapper, 8);
	55	OSMetaClassDefineReservedUnused(IOMapper, 9);
	56	OSMetaClassDefineReservedUnused(IOMapper, 10);
	57	OSMetaClassDefineReservedUnused(IOMapper, 11);
	58	OSMetaClassDefineReservedUnused(IOMapper, 12);
	59	OSMetaClassDefineReservedUnused(IOMapper, 13);
	60	OSMetaClassDefineReservedUnused(IOMapper, 14);
	61	OSMetaClassDefineReservedUnused(IOMapper, 15);
	62
	63	IOMapper * IOMapper::gSystem = (IOMapper *) IOMapper::kUnknown;
	64
	65	class IOMapperLock {
0a7de745	66	IOLock *fWaitLock;
55e303ae	67	public:
0a7de745 A	68	IOMapperLock()
	69	{
	70	fWaitLock = IOLockAlloc();
	71	}
	72	~IOMapperLock()
	73	{
	74	IOLockFree(fWaitLock);
	75	}
	76
	77	void
	78	lock()
	79	{
	80	IOLockLock(fWaitLock);
	81	}
	82	void
	83	unlock()
	84	{
	85	IOLockUnlock(fWaitLock);
	86	}
	87	void
	88	sleep(void *event)
	89	{
	90	IOLockSleep(fWaitLock, event, THREAD_UNINT);
	91	}
	92	void
	93	wakeup(void *event)
	94	{
	95	IOLockWakeup(fWaitLock, event, false);
	96	}
55e303ae A	97	};
	98
	99	static IOMapperLock sMapperLock;
	100
0a7de745 A	101	bool
0a7de745 A	102	IOMapper::start(IOService *provider)
55e303ae	103	{
f427ee49	104	OSSharedPtr<OSObject> obj;
0a7de745 A	105	if (!super::start(provider)) {
	106	return false;
	107	}
	108
	109	if (!initHardware(provider)) {
	110	return false;
	111	}
	112
f427ee49 A	113	uint64_t pageSize = getPageSize();
	114	assert(pageSize <= UINT_MAX);
	115	fPageSize = (uint32_t) pageSize;
0a7de745 A	116
	117	if (fIsSystem) {
	118	sMapperLock.lock();
	119	IOMapper::gSystem = this;
	120	sMapperLock.wakeup(&IOMapper::gSystem);
	121	sMapperLock.unlock();
	122	}
	123
	124	if (provider) {
f427ee49	125	obj = provider->copyProperty("iommu-id");
0a7de745	126	if (!obj) {
f427ee49	127	obj = provider->copyProperty("AAPL,phandle");
0a7de745 A	128	}
0a7de745 A	129	if (obj) {
f427ee49	130	setProperty(gIOMapperIDKey, obj.get());
0a7de745 A	131	}
	132	}
	133	return true;
55e303ae A	134	}
55e303ae A	135
0a7de745 A	136	void
0a7de745 A	137	IOMapper::free()
55e303ae	138	{
0a7de745	139	super::free();
55e303ae A	140	}
55e303ae A	141
0a7de745 A	142	void
0a7de745 A	143	IOMapper::setMapperRequired(bool hasMapper)
55e303ae	144	{
0a7de745 A	145	if (hasMapper) {
	146	IOMapper::gSystem = (IOMapper *) kHasMapper;
	147	} else {
	148	sMapperLock.lock();
	149	IOMapper::gSystem = (IOMapper *) kNoMapper;
	150	sMapperLock.unlock();
	151	sMapperLock.wakeup(&IOMapper::gSystem);
	152	}
55e303ae A	153	}
55e303ae A	154
0a7de745 A	155	void
0a7de745 A	156	IOMapper::waitForSystemMapper()
55e303ae	157	{
0a7de745 A	158	sMapperLock.lock();
0a7de745 A	159	while ((uintptr_t) IOMapper::gSystem & kWaitMask) {
99c3a104	160	OSReportWithBacktrace("waitForSystemMapper");
0a7de745 A	161	sMapperLock.sleep(&IOMapper::gSystem);
	162	}
	163	sMapperLock.unlock();
55e303ae A	164	}
55e303ae A	165
f427ee49	166	OSSharedPtr<IOMapper>
0a7de745	167	IOMapper::copyMapperForDevice(IOService * device)
b0d623f7	168	{
0a7de745	169	return copyMapperForDeviceWithIndex(device, 0);
39236c6e A	170	}
39236c6e A	171
f427ee49	172	OSSharedPtr<IOMapper>
0a7de745	173	IOMapper::copyMapperForDeviceWithIndex(IOService * device, unsigned int index)
39236c6e	174	{
f427ee49 A	175	OSSharedPtr<OSData> data;
	176	OSSharedPtr<OSObject> obj;
	177	OSSharedPtr<IOMapper> mapper;
	178	OSSharedPtr<OSDictionary> matching;
0a7de745 A	179
	180	obj = device->copyProperty("iommu-parent");
	181	if (!obj) {
	182	return NULL;
	183	}
	184
f427ee49	185	if ((mapper = OSDynamicPtrCast<IOMapper>(obj))) {
0a7de745 A	186	goto found;
	187	}
	188
f427ee49	189	if ((data = OSDynamicPtrCast<OSData>(obj))) {
0a7de745	190	if (index >= data->getLength() / sizeof(UInt32)) {
f427ee49	191	goto found;
0a7de745 A	192	}
	193
	194	data = OSData::withBytesNoCopy((UInt32 *)data->getBytesNoCopy() + index, sizeof(UInt32));
	195	if (!data) {
f427ee49	196	goto found;
0a7de745 A	197	}
0a7de745 A	198
f427ee49	199	matching = IOService::propertyMatching(gIOMapperIDKey, data.get());
0a7de745	200	} else {
f427ee49	201	matching = IOService::propertyMatching(gIOMapperIDKey, obj.get());
0a7de745 A	202	}
	203
	204	if (matching) {
f427ee49	205	mapper = OSDynamicPtrCast<IOMapper>(IOService::waitForMatchingService(matching.get()));
0a7de745	206	}
39236c6e	207
5ba3f43e	208	found:
0a7de745 A	209	if (mapper) {
	210	if (!mapper->fAllocName) {
	211	char name[MACH_ZONE_NAME_MAX_LEN];
	212	char kmodname[KMOD_MAX_NAME];
	213	vm_tag_t tag;
	214	uint32_t kmodid;
	215
	216	tag = IOMemoryTag(kernel_map);
	217	if (!(kmodid = vm_tag_get_kext(tag, &kmodname[0], KMOD_MAX_NAME))) {
	218	snprintf(kmodname, sizeof(kmodname), "%d", tag);
	219	}
	220	snprintf(name, sizeof(name), "%s.DMA.%s", kmodname, device->getName());
	221	mapper->fAllocName = kern_allocation_name_allocate(name, 16);
	222	}
	223	}
	224
	225	return mapper;
b0d623f7 A	226	}
b0d623f7 A	227
55e303ae A	228	__BEGIN_DECLS
	229
	230	// These are C accessors to the system mapper for non-IOKit clients
0a7de745 A	231	ppnum_t
0a7de745 A	232	IOMapperIOVMAlloc(unsigned pages)
55e303ae	233	{
0a7de745 A	234	IOReturn ret;
	235	uint64_t dmaAddress, dmaLength;
	236
	237	IOMapper::checkForSystemMapper();
	238
	239	ret = kIOReturnUnsupported;
	240	if (IOMapper::gSystem) {
	241	ret = IOMapper::gSystem->iovmMapMemory(
	242	NULL, 0, ptoa_64(pages),
	243	(kIODMAMapReadAccess \| kIODMAMapWriteAccess),
	244	NULL, NULL, NULL,
	245	&dmaAddress, &dmaLength);
	246	}
	247
	248	if (kIOReturnSuccess == ret) {
f427ee49 A	249	uint64_t dmaAddressPage64;
	250	dmaAddressPage64 = atop_64(dmaAddress);
	251	if (dmaAddressPage64 > UINT_MAX) {
	252	return 0;
	253	}
	254	return (ppnum_t) atop_64(dmaAddress);
0a7de745 A	255	}
0a7de745 A	256	return 0;
55e303ae A	257	}
55e303ae A	258
0a7de745 A	259	void
0a7de745 A	260	IOMapperIOVMFree(ppnum_t addr, unsigned pages)
55e303ae	261	{
0a7de745 A	262	if (IOMapper::gSystem) {
	263	IOMapper::gSystem->iovmUnmapMemory(NULL, NULL, ptoa_64(addr), ptoa_64(pages));
	264	}
55e303ae A	265	}
55e303ae A	266
0a7de745 A	267	ppnum_t
0a7de745 A	268	IOMapperInsertPage(ppnum_t addr, unsigned offset, ppnum_t page)
55e303ae	269	{
0a7de745 A	270	if (!IOMapper::gSystem) {
	271	return page;
	272	}
	273	if (!addr) {
	274	panic("!addr");
	275	}
	276	IOMapper::gSystem->iovmInsert((kIODMAMapReadAccess \| kIODMAMapWriteAccess),
	277	ptoa_64(addr), ptoa_64(offset), ptoa_64(page), ptoa_64(1));
	278	return addr + offset;
55e303ae A	279	}
	280
	281	/////////////////////////////////////////////////////////////////////////////
	282	//
	283	//
	284	// IOLib.h APIs
	285	//
	286	//
	287	/////////////////////////////////////////////////////////////////////////////
	288
	289	#include <machine/machine_routines.h>
	290
0a7de745 A	291	UInt8
0a7de745 A	292	IOMappedRead8(IOPhysicalAddress address)
55e303ae	293	{
0a7de745 A	294	IOMapper::checkForSystemMapper();
	295
	296	if (IOMapper::gSystem) {
	297	addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
	298	return (UInt8) ml_phys_read_byte_64(addr);
	299	} else {
	300	return (UInt8) ml_phys_read_byte((vm_offset_t) address);
	301	}
55e303ae A	302	}
55e303ae A	303
0a7de745 A	304	UInt16
0a7de745 A	305	IOMappedRead16(IOPhysicalAddress address)
55e303ae	306	{
0a7de745 A	307	IOMapper::checkForSystemMapper();
	308
	309	if (IOMapper::gSystem) {
	310	addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
	311	return (UInt16) ml_phys_read_half_64(addr);
	312	} else {
	313	return (UInt16) ml_phys_read_half((vm_offset_t) address);
	314	}
55e303ae A	315	}
55e303ae A	316
0a7de745 A	317	UInt32
0a7de745 A	318	IOMappedRead32(IOPhysicalAddress address)
55e303ae	319	{
0a7de745 A	320	IOMapper::checkForSystemMapper();
	321
	322	if (IOMapper::gSystem) {
	323	addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
	324	return (UInt32) ml_phys_read_word_64(addr);
	325	} else {
	326	return (UInt32) ml_phys_read_word((vm_offset_t) address);
	327	}
55e303ae A	328	}
55e303ae A	329
0a7de745 A	330	UInt64
0a7de745 A	331	IOMappedRead64(IOPhysicalAddress address)
55e303ae	332	{
0a7de745 A	333	IOMapper::checkForSystemMapper();
	334
	335	if (IOMapper::gSystem) {
	336	addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
	337	return (UInt64) ml_phys_read_double_64(addr);
	338	} else {
	339	return (UInt64) ml_phys_read_double((vm_offset_t) address);
	340	}
55e303ae A	341	}
55e303ae A	342
0a7de745 A	343	void
0a7de745 A	344	IOMappedWrite8(IOPhysicalAddress address, UInt8 value)
55e303ae	345	{
0a7de745 A	346	IOMapper::checkForSystemMapper();
	347
	348	if (IOMapper::gSystem) {
	349	addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
	350	ml_phys_write_byte_64(addr, value);
	351	} else {
	352	ml_phys_write_byte((vm_offset_t) address, value);
	353	}
55e303ae A	354	}
55e303ae A	355
0a7de745 A	356	void
0a7de745 A	357	IOMappedWrite16(IOPhysicalAddress address, UInt16 value)
55e303ae	358	{
0a7de745 A	359	IOMapper::checkForSystemMapper();
	360
	361	if (IOMapper::gSystem) {
	362	addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
	363	ml_phys_write_half_64(addr, value);
	364	} else {
	365	ml_phys_write_half((vm_offset_t) address, value);
	366	}
55e303ae A	367	}
55e303ae A	368
0a7de745 A	369	void
0a7de745 A	370	IOMappedWrite32(IOPhysicalAddress address, UInt32 value)
55e303ae	371	{
0a7de745 A	372	IOMapper::checkForSystemMapper();
	373
	374	if (IOMapper::gSystem) {
	375	addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
	376	ml_phys_write_word_64(addr, value);
	377	} else {
	378	ml_phys_write_word((vm_offset_t) address, value);
	379	}
55e303ae A	380	}
55e303ae A	381
0a7de745 A	382	void
0a7de745 A	383	IOMappedWrite64(IOPhysicalAddress address, UInt64 value)
55e303ae	384	{
0a7de745 A	385	IOMapper::checkForSystemMapper();
	386
	387	if (IOMapper::gSystem) {
	388	addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
	389	ml_phys_write_double_64(addr, value);
	390	} else {
	391	ml_phys_write_double((vm_offset_t) address, value);
	392	}
55e303ae A	393	}
	394
	395	__END_DECLS