/*
- * Copyright (c) 1998-2003 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
- *
- * Copyright (c) 1999-2003 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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#include <IOKit/IOLib.h>
#include <IOKit/IOMapper.h>
+#include <IOKit/IODMACommand.h>
#include <libkern/c++/OSData.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);
+OSMetaClassDefineReservedUsed(IOMapper, 0);
+OSMetaClassDefineReservedUsed(IOMapper, 1);
+OSMetaClassDefineReservedUsed(IOMapper, 2);
OSMetaClassDefineReservedUnused(IOMapper, 3);
OSMetaClassDefineReservedUnused(IOMapper, 4);
OSMetaClassDefineReservedUnused(IOMapper, 5);
bool IOMapper::start(IOService *provider)
{
+ OSObject * obj;
if (!super::start(provider))
return false;
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::waitForSystemMapper()
{
sMapperLock.lock();
- while ((vm_address_t) IOMapper::gSystem & kWaitMask)
+ 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)
{
iovmInsert(addr, offset + i, pageList[i].phys_addr);
}
-struct ARTTableData {
- void *v;
- upl_t u[0];
-};
-#define getARTDataP(data) ((ARTTableData *) (data)->getBytesNoCopy())
-
-OSData *
-IOMapper::NewARTTable(IOByteCount size,
- void ** virtAddrP, ppnum_t *physAddrP)
+OSData * IOMapper::
+NewARTTable(IOByteCount size, void ** virtAddrP, ppnum_t *physAddrP)
{
- OSData *ret;
- kern_return_t kr;
- vm_address_t startUpl;
- ARTTableData *dataP;
- unsigned int dataSize;
- upl_page_info_t *pl = 0;
-
- // Each UPL can deal with about one meg at the moment
- size = round_page_32(size);
- dataSize = sizeof(ARTTableData) + sizeof(upl_t) * size / (1024 * 1024);
- ret = OSData::withCapacity(dataSize);
- if (!ret)
- return 0;
+ if (!virtAddrP || !physAddrP)
+ return 0;
- // Append 0's to the buffer, in-other-words reset to nulls.
- ret->appendBytes(NULL, sizeof(ARTTableData));
- dataP = getARTDataP(ret);
+ kern_return_t kr;
+ vm_address_t address;
- kr = kmem_alloc_contig(kernel_map, &startUpl, size, PAGE_MASK, 0);
+ 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;
- dataP->v = (void *) startUpl;
-
- do {
- upl_t iopl;
- int upl_flags = UPL_SET_INTERNAL | UPL_SET_LITE
- | UPL_SET_IO_WIRE | UPL_COPYOUT_FROM;
- vm_size_t iopl_size = size;
-
- kr = vm_map_get_upl(kernel_map,
- startUpl,
- &iopl_size,
- &iopl,
- 0,
- 0,
- &upl_flags,
- 0);
- if (kr) {
- panic("IOMapper:vm_map_get_upl returned 0x%x\n");
- goto bail;
- }
-
- if (!ret->appendBytes(&iopl, sizeof(upl_t)))
- goto bail;
-
- startUpl += iopl_size;
- size -= iopl_size;
- } while(size);
-
- // Need to re-establish the dataP as the OSData may have grown.
- dataP = getARTDataP(ret);
-
- // Now grab the page entry of the first page and get its phys addr
- pl = UPL_GET_INTERNAL_PAGE_LIST(dataP->u[0]);
- *physAddrP = pl->phys_addr;
- *virtAddrP = dataP->v;
-
- return ret;
-
-bail:
- FreeARTTable(ret, size);
- 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)
{
- assert(artHandle);
-
- ARTTableData *dataP = getARTDataP(artHandle);
+ vm_address_t address = (vm_address_t) artHandle;
- int numupls = ((artHandle->getLength() - sizeof(*dataP)) / sizeof(upl_t));
- for (int i = 0; i < numupls; i++)
- kernel_upl_abort(dataP->u[i], 0);
+ size = round_page(size);
+ kmem_free(kernel_map, address, size); // Just panic if address is 0
+}
- if (dataP->v) {
- size = round_page_32(size);
- kmem_free(kernel_map, (vm_address_t) dataP->v, size);
- }
- artHandle->release();
+bool IOMapper::getBypassMask(addr64_t *maskP) const
+{
+ return false;
}
__BEGIN_DECLS
projects / apple / xnu.git / blobdiff