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--- xnu/xnu-1504.7.4/iokit/Kernel/IOMapper.cpp
+++ /dev/null
@@ -1,412 +0,0 @@
-/*
- * 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 "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);
-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);
-}
-
-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