/*
- * Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2016 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
*/
#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 "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);
class IOMapperLock {
IOLock *fWaitLock;
public:
- IOMapperLock() { fWaitLock = IOLockAlloc(); };
- ~IOMapperLock() { IOLockFree(fWaitLock); };
+ 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); };
+ 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;
+ fPageSize = getPageSize();
+
if (fIsSystem) {
sMapperLock.lock();
IOMapper::gSystem = this;
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::waitForSystemMapper()
{
sMapperLock.lock();
- while ((vm_address_t) IOMapper::gSystem & kWaitMask)
+ while ((uintptr_t) IOMapper::gSystem & kWaitMask)
+ {
+ OSReportWithBacktrace("waitForSystemMapper");
sMapperLock.sleep(&IOMapper::gSystem);
+ }
sMapperLock.unlock();
}
-void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
- ppnum_t *pageList, IOItemCount pageCount)
+IOMapper * IOMapper::copyMapperForDevice(IOService * device)
{
- while (pageCount--)
- iovmInsert(addr, offset++, *pageList++);
+ return copyMapperForDeviceWithIndex(device, 0);
}
-void IOMapper::iovmInsert(ppnum_t addr, IOItemCount offset,
- upl_page_info_t *pageList, IOItemCount pageCount)
+IOMapper * IOMapper::copyMapperForDeviceWithIndex(IOService * device, unsigned int index)
{
- 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;
+ 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);
- *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
-}
+ if (matching)
+ {
+ mapper = OSDynamicCast(IOMapper, IOService::waitForMatchingService(matching));
+ matching->release();
+ }
-bool IOMapper::getBypassMask(addr64_t *maskP) const
-{
- return false;
+done:
+ if (obj)
+ obj->release();
+ 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)
- return IOMapper::gSystem->iovmAlloc((IOItemCount) pages);
- else
- return 0;
+ {
+ 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)
{
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;
+ {
+ IOMapper::gSystem->iovmUnmapMemory(NULL, NULL, ptoa_64(addr), ptoa_64(pages));
}
- 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)
+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);
}
/////////////////////////////////////////////////////////////////////////////
IOMapper::checkForSystemMapper();
if (IOMapper::gSystem) {
- addr64_t addr = IOMapper::gSystem->mapAddr(address);
+ addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
return (UInt8) ml_phys_read_byte_64(addr);
}
else
IOMapper::checkForSystemMapper();
if (IOMapper::gSystem) {
- addr64_t addr = IOMapper::gSystem->mapAddr(address);
+ addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
return (UInt16) ml_phys_read_half_64(addr);
}
else
IOMapper::checkForSystemMapper();
if (IOMapper::gSystem) {
- addr64_t addr = IOMapper::gSystem->mapAddr(address);
+ addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
return (UInt32) ml_phys_read_word_64(addr);
}
else
IOMapper::checkForSystemMapper();
if (IOMapper::gSystem) {
- addr64_t addr = IOMapper::gSystem->mapAddr(address);
+ addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
return (UInt64) ml_phys_read_double_64(addr);
}
else
IOMapper::checkForSystemMapper();
if (IOMapper::gSystem) {
- addr64_t addr = IOMapper::gSystem->mapAddr(address);
+ addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
ml_phys_write_byte_64(addr, value);
}
else
IOMapper::checkForSystemMapper();
if (IOMapper::gSystem) {
- addr64_t addr = IOMapper::gSystem->mapAddr(address);
+ addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
ml_phys_write_half_64(addr, value);
}
else
IOMapper::checkForSystemMapper();
if (IOMapper::gSystem) {
- addr64_t addr = IOMapper::gSystem->mapAddr(address);
+ addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(address);
ml_phys_write_word_64(addr, value);
}
else
IOMapper::checkForSystemMapper();
if (IOMapper::gSystem) {
- addr64_t addr = IOMapper::gSystem->mapAddr(address);
+ addr64_t addr = IOMapper::gSystem->mapToPhysicalAddress(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
projects / apple / xnu.git / blobdiff