/*
- * Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2016 Apple Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License"). You may not use this file except in compliance with the
- * License. Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @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 OR NON-INFRINGEMENT. Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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 "IOCopyMapper.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);
#define super IOService
OSDefineMetaClassAndAbstractStructors(IOMapper, IOService);
-OSMetaClassDefineReservedUsed(IOMapper, 0);
+OSMetaClassDefineReservedUnused(IOMapper, 0);
OSMetaClassDefineReservedUnused(IOMapper, 1);
OSMetaClassDefineReservedUnused(IOMapper, 2);
OSMetaClassDefineReservedUnused(IOMapper, 3);
IOMapper * IOMapper::gSystem = (IOMapper *) IOMapper::kUnknown;
class IOMapperLock {
- IOLock *fWaitLock;
+ 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); };
+ 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)
+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;
+ 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;
}
-bool IOMapper::allocTable(IOByteCount size)
+void
+IOMapper::free()
{
- assert(!fTable);
-
- fTableSize = size;
- fTableHandle = NewARTTable(size, &fTable, &fTablePhys);
- return fTableHandle != 0;
+ super::free();
}
-void IOMapper::free()
+void
+IOMapper::setMapperRequired(bool hasMapper)
{
- if (fTableHandle) {
- FreeARTTable(fTableHandle, fTableSize);
- fTableHandle = 0;
- }
-
- super::free();
+ if (hasMapper) {
+ IOMapper::gSystem = (IOMapper *) kHasMapper;
+ } else {
+ sMapperLock.lock();
+ IOMapper::gSystem = (IOMapper *) kNoMapper;
+ sMapperLock.unlock();
+ sMapperLock.wakeup(&IOMapper::gSystem);
+ }
}
-void IOMapper::setMapperRequired(bool hasMapper)
+void
+IOMapper::waitForSystemMapper()
{
- if (hasMapper)
- IOMapper::gSystem = (IOMapper *) kHasMapper;
- else {
- sMapperLock.lock();
- IOMapper::gSystem = (IOMapper *) kNoMapper;
- sMapperLock.unlock();
- sMapperLock.wakeup(&IOMapper::gSystem);
- }
+ sMapperLock.lock();
+ while ((uintptr_t) IOMapper::gSystem & kWaitMask) {
+ OSReportWithBacktrace("waitForSystemMapper");
+ sMapperLock.sleep(&IOMapper::gSystem);
+ }
+ sMapperLock.unlock();
}
-void IOMapper::waitForSystemMapper()
+OSSharedPtr<IOMapper>
+IOMapper::copyMapperForDevice(IOService * device)
{
- sMapperLock.lock();
- while ((vm_address_t) IOMapper::gSystem & kWaitMask)
- sMapperLock.sleep(&IOMapper::gSystem);
- sMapperLock.unlock();
+ return copyMapperForDeviceWithIndex(device, 0);
}
-void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
- ppnum_t *pageList, IOItemCount pageCount)
+OSSharedPtr<IOMapper>
+IOMapper::copyMapperForDeviceWithIndex(IOService * device, unsigned int index)
{
- 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);
- 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;
+ 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)
-{
- 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)
+ppnum_t
+IOMapperIOVMAlloc(unsigned pages)
{
- if (IOMapper::gSystem) {
- IOMapper::gSystem->iovmInsert(addr, (IOItemCount) offset, page);
- return addr + offset;
- }
- else
- return page;
+ 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 IOMapperInsertPPNPages(ppnum_t addr, unsigned offset,
- ppnum_t *pageList, unsigned pageCount)
+void
+IOMapperIOVMFree(ppnum_t addr, unsigned pages)
{
- if (!IOMapper::gSystem)
- panic("IOMapperInsertPPNPages no system mapper");
- else
- assert(!((vm_address_t) IOMapper::gSystem & 3));
-
- IOMapper::gSystem->
- iovmInsert(addr, (IOItemCount) offset, pageList, pageCount);
+ if (IOMapper::gSystem) {
+ IOMapper::gSystem->iovmUnmapMemory(NULL, NULL, ptoa_64(addr), ptoa_64(pages));
+ }
}
-void IOMapperInsertUPLPages(ppnum_t addr, unsigned offset,
- upl_page_info_t *pageList, unsigned pageCount)
+ppnum_t
+IOMapperInsertPage(ppnum_t addr, unsigned offset, ppnum_t page)
{
- 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);
+ 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;
}
/////////////////////////////////////////////////////////////////////////////
#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)
+UInt8
+IOMappedRead8(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);
+ 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);
+ }
}
-UInt64 IOMappedRead64(IOPhysicalAddress address)
+UInt16
+IOMappedRead16(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);
+ 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);
+ }
}
-void IOMappedWrite8(IOPhysicalAddress address, UInt8 value)
+UInt32
+IOMappedRead32(IOPhysicalAddress address)
{
- 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);
+ 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);
+ }
}
-void IOMappedWrite16(IOPhysicalAddress address, UInt16 value)
+UInt64
+IOMappedRead64(IOPhysicalAddress address)
{
- 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);
+ 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 IOMappedWrite32(IOPhysicalAddress address, UInt32 value)
+void
+IOMappedWrite8(IOPhysicalAddress address, UInt8 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);
+ 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 IOMappedWrite64(IOPhysicalAddress address, UInt64 value)
+void
+IOMappedWrite16(IOPhysicalAddress address, UInt16 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);
+ 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);
+ }
}
-mach_vm_address_t IOMallocPhysical(mach_vm_size_t size, mach_vm_address_t mask)
+void
+IOMappedWrite32(IOPhysicalAddress address, UInt32 value)
{
- mach_vm_address_t address = 0;
- if (gIOCopyMapper)
- {
- address = ptoa_64(gIOCopyMapper->iovmAlloc(atop_64(round_page(size))));
- }
-
- return (address);
+ 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 IOFreePhysical(mach_vm_address_t address, mach_vm_size_t size)
+void
+IOMappedWrite64(IOPhysicalAddress address, UInt64 value)
{
- if (gIOCopyMapper)
- {
- gIOCopyMapper->iovmFree(atop_64(address), atop_64(round_page(size)));
- }
+ 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
projects / apple / xnu.git / blobdiff