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--- xnu/xnu-1504.9.26/iokit/Kernel/IOMapper.cpp
+++ xnu/xnu-792/iokit/Kernel/IOMapper.cpp
@@ -1,45 +1,34 @@
/*
* Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * @APPLE_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.
+ * 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.
*
- * 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
+ * This 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.
+ * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
+ * License for the specific language governing rights and limitations
+ * under the License.
*
- * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ * @APPLE_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);
-OSMetaClassDefineReservedUsed(IOMapper, 0);
-OSMetaClassDefineReservedUsed(IOMapper, 1);
-OSMetaClassDefineReservedUsed(IOMapper, 2);
+OSMetaClassDefineReservedUnused(IOMapper, 0);
+OSMetaClassDefineReservedUnused(IOMapper, 1);
+OSMetaClassDefineReservedUnused(IOMapper, 2);
OSMetaClassDefineReservedUnused(IOMapper, 3);
OSMetaClassDefineReservedUnused(IOMapper, 4);
OSMetaClassDefineReservedUnused(IOMapper, 5);
@@ -72,7 +61,6 @@
bool IOMapper::start(IOService *provider)
{
- OSObject * obj;
if (!super::start(provider))
return false;
@@ -86,14 +74,6 @@
sMapperLock.unlock();
}
- if (provider)
- {
- obj = provider->getProperty("iommu-id");
- if (!obj)
- obj = provider->getProperty("AAPL,phandle");
- if (obj)
- setProperty(gIOMapperIDKey, obj);
- }
return true;
}
@@ -131,48 +111,11 @@
void IOMapper::waitForSystemMapper()
{
sMapperLock.lock();
- while ((uintptr_t) IOMapper::gSystem & kWaitMask)
+ while ((vm_address_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)
{
@@ -187,44 +130,98 @@
iovmInsert(addr, offset + i, pageList[i].phys_addr);
}
-OSData * IOMapper::
-NewARTTable(IOByteCount size, void ** virtAddrP, ppnum_t *physAddrP)
-{
- if (!virtAddrP || !physAddrP)
- return 0;
-
+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 *ret;
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);
+ 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;
+
+ // Append 0's to the buffer, in-other-words reset to nulls.
+ ret->appendBytes(NULL, sizeof(ARTTableData));
+ dataP = getARTDataP(ret);
+
+ kr = kmem_alloc_contig(kernel_map, &startUpl, 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;
+ 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;
}
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;
+ assert(artHandle);
+
+ ARTTableData *dataP = getARTDataP(artHandle);
+
+ int numupls = ((artHandle->getLength() - sizeof(*dataP)) / sizeof(upl_t));
+ for (int i = 0; i < numupls; i++) {
+ upl_abort(dataP->u[i], 0);
+ upl_deallocate(dataP->u[i]);
+ }
+
+ if (dataP->v) {
+ size = round_page_32(size);
+ kmem_free(kernel_map, (vm_address_t) dataP->v, size);
+ }
+ artHandle->release();
}
__BEGIN_DECLS