* 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
* 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,
* 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/IODMACommand.h>
#include <libkern/c++/OSData.h>
#include <libkern/OSDebug.h>
+#include <mach_debug/zone_info.h>
#include "IOKitKernelInternal.h"
__BEGIN_DECLS
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)
{
- OSObject * obj;
- if (!super::start(provider))
- return false;
-
- if (!initHardware(provider))
- return false;
-
- fPageSize = getPageSize();
-
- 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;
+ OSObject * obj;
+ if (!super::start(provider)) {
+ return false;
+ }
+
+ if (!initHardware(provider)) {
+ return false;
+ }
+
+ fPageSize = getPageSize();
+
+ 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;
}
-void IOMapper::free()
+void
+IOMapper::free()
{
- super::free();
+ super::free();
}
-void IOMapper::setMapperRequired(bool hasMapper)
+void
+IOMapper::setMapperRequired(bool hasMapper)
{
- if (hasMapper)
- IOMapper::gSystem = (IOMapper *) kHasMapper;
- else {
- sMapperLock.lock();
- IOMapper::gSystem = (IOMapper *) kNoMapper;
- sMapperLock.unlock();
- sMapperLock.wakeup(&IOMapper::gSystem);
- }
+ if (hasMapper) {
+ IOMapper::gSystem = (IOMapper *) kHasMapper;
+ } else {
+ sMapperLock.lock();
+ IOMapper::gSystem = (IOMapper *) kNoMapper;
+ sMapperLock.unlock();
+ sMapperLock.wakeup(&IOMapper::gSystem);
+ }
}
-void IOMapper::waitForSystemMapper()
+void
+IOMapper::waitForSystemMapper()
{
- sMapperLock.lock();
- while ((uintptr_t) IOMapper::gSystem & kWaitMask)
- {
+ sMapperLock.lock();
+ while ((uintptr_t) IOMapper::gSystem & kWaitMask) {
OSReportWithBacktrace("waitForSystemMapper");
- sMapperLock.sleep(&IOMapper::gSystem);
- }
- sMapperLock.unlock();
+ sMapperLock.sleep(&IOMapper::gSystem);
+ }
+ sMapperLock.unlock();
}
-IOMapper * IOMapper::copyMapperForDevice(IOService * device)
+IOMapper *
+IOMapper::copyMapperForDevice(IOService * device)
{
- return copyMapperForDeviceWithIndex(device, 0);
+ return copyMapperForDeviceWithIndex(device, 0);
}
-IOMapper * IOMapper::copyMapperForDeviceWithIndex(IOService * device, unsigned int index)
+IOMapper *
+IOMapper::copyMapperForDeviceWithIndex(IOService * device, unsigned int index)
{
- OSData *data;
- OSObject * obj;
- IOMapper * mapper = NULL;
- OSDictionary * matching;
-
- obj = device->copyProperty("iommu-parent");
- if (!obj)
- return (NULL);
-
- if ((mapper = OSDynamicCast(IOMapper, obj)))
- return (mapper);
-
- if ((data = OSDynamicCast(OSData, obj)))
- {
- if (index >= data->getLength() / sizeof(UInt32))
- goto done;
-
- data = OSData::withBytesNoCopy((UInt32 *)data->getBytesNoCopy() + index, sizeof(UInt32));
- if (!data)
- goto done;
-
- matching = IOService::propertyMatching(gIOMapperIDKey, data);
- data->release();
- }
- else
- matching = IOService::propertyMatching(gIOMapperIDKey, obj);
-
- if (matching)
- {
- mapper = OSDynamicCast(IOMapper, IOService::waitForMatchingService(matching));
- matching->release();
- }
+ OSData *data;
+ OSObject * obj;
+ IOMapper * mapper = NULL;
+ OSDictionary * matching;
+
+ obj = device->copyProperty("iommu-parent");
+ if (!obj) {
+ return NULL;
+ }
+
+ if ((mapper = OSDynamicCast(IOMapper, obj))) {
+ goto found;
+ }
+
+ if ((data = OSDynamicCast(OSData, obj))) {
+ if (index >= data->getLength() / sizeof(UInt32)) {
+ goto done;
+ }
+
+ data = OSData::withBytesNoCopy((UInt32 *)data->getBytesNoCopy() + index, sizeof(UInt32));
+ if (!data) {
+ goto done;
+ }
+
+ matching = IOService::propertyMatching(gIOMapperIDKey, data);
+ data->release();
+ } else {
+ matching = IOService::propertyMatching(gIOMapperIDKey, obj);
+ }
+
+ if (matching) {
+ mapper = OSDynamicCast(IOMapper, IOService::waitForMatchingService(matching));
+ matching->release();
+ }
done:
- if (obj)
- obj->release();
- return (mapper);
+ if (obj) {
+ obj->release();
+ }
+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)
+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) return (atop_64(dmaAddress));
- return (0);
+ 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) {
+ return atop_64(dmaAddress);
+ }
+ return 0;
}
-void IOMapperIOVMFree(ppnum_t addr, unsigned pages)
+void
+IOMapperIOVMFree(ppnum_t addr, unsigned pages)
{
- if (IOMapper::gSystem)
- {
- IOMapper::gSystem->iovmUnmapMemory(NULL, NULL, ptoa_64(addr), ptoa_64(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)
+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);
+ 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)
+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);
+ 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)
+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);
+ 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)
+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);
+ 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)
+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);
+ 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)
+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);
+ 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)
+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);
+ 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)
+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);
+ 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)
+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);
+ 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