*
* @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.
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
*
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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.
+ *
+ * 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.
+ * 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_LICENSE_HEADER_END@
*/
#include <IOKit/IOReturn.h>
#include <IOKit/IOLib.h>
+#include <IOKit/IOMapper.h>
#include <IOKit/IOKitDebug.h>
mach_timespec_t IOZeroTvalspec = { 0, 0 };
+extern ppnum_t pmap_find_phys(pmap_t pmap, addr64_t va);
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Global variables for use by iLogger
*/
static IOThreadFunc threadArgFcn;
-static void * threadArgArg;
-static lock_t * threadArgLock;
+static void * threadArgArg;
+static lock_t * threadArgLock;
+static queue_head_t gIOMallocContiguousEntries;
+static mutex_t * gIOMallocContiguousEntriesLock;
enum { kIOMaxPageableMaps = 16 };
enum { kIOPageableMapSize = 16 * 1024 * 1024 };
mutex_t * lock;
} gIOKitPageableSpace;
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
void IOLibInit(void)
{
gIOKitPageableSpace.hint = 0;
gIOKitPageableSpace.count = 1;
+ gIOMallocContiguousEntriesLock = mutex_alloc( 0 );
+ queue_init( &gIOMallocContiguousEntries );
+
libInitialized = true;
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+struct _IOMallocContiguousEntry
+{
+ void * virtual;
+ ppnum_t ioBase;
+ queue_chain_t link;
+};
+typedef struct _IOMallocContiguousEntry _IOMallocContiguousEntry;
+
void * IOMallocContiguous(vm_size_t size, vm_size_t alignment,
IOPhysicalAddress * physicalAddress)
{
vm_address_t allocationAddress;
vm_size_t adjustedSize;
vm_offset_t alignMask;
+ ppnum_t pagenum;
if (size == 0)
return 0;
alignMask = alignment - 1;
adjustedSize = (2 * size) + sizeof(vm_size_t) + sizeof(vm_address_t);
- if (adjustedSize >= page_size) {
-
- kr = kmem_alloc_contig(kernel_map, &address, size,
- alignMask, 0);
+ if (adjustedSize >= page_size)
+ {
+ adjustedSize = size;
+ if (adjustedSize > page_size)
+ {
+ kr = kmem_alloc_contig(kernel_map, &address, size,
+ alignMask, 0);
+ }
+ else
+ {
+ kr = kernel_memory_allocate(kernel_map, &address,
+ size, alignMask, 0);
+ }
if (KERN_SUCCESS != kr)
address = 0;
-
- } else {
-
+ }
+ else
+ {
adjustedSize += alignMask;
allocationAddress = (vm_address_t) kalloc(adjustedSize);
+ (sizeof(vm_size_t) + sizeof(vm_address_t)))
& (~alignMask);
- if (atop(address) != atop(address + size - 1))
- address = round_page(address);
+ if (atop_32(address) != atop_32(address + size - 1))
+ address = round_page_32(address);
*((vm_size_t *)(address - sizeof(vm_size_t)
- sizeof(vm_address_t))) = adjustedSize;
address = 0;
}
- if( address && physicalAddress)
- *physicalAddress = (IOPhysicalAddress) pmap_extract( kernel_pmap,
- address );
+ /* Do we want a physical address? */
+ if (address && physicalAddress)
+ {
+ do
+ {
+ /* Get the physical page */
+ pagenum = pmap_find_phys(kernel_pmap, (addr64_t) address);
+ if(pagenum)
+ {
+ IOByteCount offset;
+ ppnum_t base;
+
+ base = IOMapperIOVMAlloc((size + PAGE_MASK) >> PAGE_SHIFT);
+ if (base)
+ {
+ _IOMallocContiguousEntry *
+ entry = IONew(_IOMallocContiguousEntry, 1);
+ if (!entry)
+ {
+ IOFreeContiguous((void *) address, size);
+ address = 0;
+ break;
+ }
+ entry->virtual = (void *) address;
+ entry->ioBase = base;
+ mutex_lock(gIOMallocContiguousEntriesLock);
+ queue_enter( &gIOMallocContiguousEntries, entry,
+ _IOMallocContiguousEntry *, link );
+ mutex_unlock(gIOMallocContiguousEntriesLock);
+
+ *physicalAddress = (IOPhysicalAddress)((base << PAGE_SHIFT) | (address & PAGE_MASK));
+ for (offset = 0; offset < ((size + PAGE_MASK) >> PAGE_SHIFT); offset++, pagenum++)
+ IOMapperInsertPage( base, offset, pagenum );
+ }
+ else
+ *physicalAddress = (IOPhysicalAddress)((pagenum << PAGE_SHIFT) | (address & PAGE_MASK));
+ }
+ else
+ /* Did not find, return 0 */
+ *physicalAddress = (IOPhysicalAddress) 0;
+ }
+ while (false);
+ }
assert(0 == (address & alignMask));
void IOFreeContiguous(void * address, vm_size_t size)
{
- vm_address_t allocationAddress;
- vm_size_t adjustedSize;
+ vm_address_t allocationAddress;
+ vm_size_t adjustedSize;
+ _IOMallocContiguousEntry * entry;
+ ppnum_t base = 0;
if( !address)
return;
assert(size);
+ mutex_lock(gIOMallocContiguousEntriesLock);
+ queue_iterate( &gIOMallocContiguousEntries, entry,
+ _IOMallocContiguousEntry *, link )
+ {
+ if( entry->virtual == address ) {
+ base = entry->ioBase;
+ queue_remove( &gIOMallocContiguousEntries, entry,
+ _IOMallocContiguousEntry *, link );
+ break;
+ }
+ }
+ mutex_unlock(gIOMallocContiguousEntriesLock);
+
+ if (base)
+ {
+ IOMapperIOVMFree(base, (size + PAGE_MASK) >> PAGE_SHIFT);
+ IODelete(entry, _IOMallocContiguousEntry, 1);
+ }
+
adjustedSize = (2 * size) + sizeof(vm_size_t) + sizeof(vm_address_t);
if (adjustedSize >= page_size) {
#if IOALLOCDEBUG
if( ref.address)
- debug_iomalloc_size += round_page(size);
+ debug_iomalloc_size += round_page_32(size);
#endif
return( (void *) ref.address );
kmem_free( map, (vm_offset_t) address, size);
#if IOALLOCDEBUG
- debug_iomalloc_size -= round_page(size);
+ debug_iomalloc_size -= round_page_32(size);
#endif
}
extern kern_return_t IOMapPages(vm_map_t map, vm_offset_t va, vm_offset_t pa,
vm_size_t length, unsigned int options);
+extern kern_return_t IOUnmapPages(vm_map_t map, vm_offset_t va, vm_size_t length);
IOReturn IOSetProcessorCacheMode( task_t task, IOVirtualAddress address,
IOByteCount length, IOOptionBits cacheMode )
{
IOReturn ret = kIOReturnSuccess;
- vm_offset_t physAddr;
+ ppnum_t pagenum;
if( task != kernel_task)
return( kIOReturnUnsupported );
- length = round_page(address + length) - trunc_page( address );
- address = trunc_page( address );
+ length = round_page_32(address + length) - trunc_page_32( address );
+ address = trunc_page_32( address );
// make map mode
cacheMode = (cacheMode << kIOMapCacheShift) & kIOMapCacheMask;
while( (kIOReturnSuccess == ret) && (length > 0) ) {
- physAddr = pmap_extract( kernel_pmap, address );
- if( physAddr)
- ret = IOMapPages( get_task_map(task), address, physAddr, page_size, cacheMode );
- else
+ // Get the physical page number
+ pagenum = pmap_find_phys(kernel_pmap, (addr64_t)address);
+ if( pagenum) {
+ ret = IOUnmapPages( get_task_map(task), address, page_size );
+ ret = IOMapPages( get_task_map(task), address, pagenum << PAGE_SHIFT, page_size, cacheMode );
+ } else
ret = kIOReturnVMError;
+ address += page_size;
length -= page_size;
}
return( kIOReturnUnsupported );
#if __ppc__
- flush_dcache( (vm_offset_t) address, (unsigned) length, false );
+ flush_dcache64( (addr64_t) address, (unsigned) length, false );
#endif
return( kIOReturnSuccess );
projects / apple / xnu.git / blobdiff