/*
- * Copyright (c) 1998-2004 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1998-2006 Apple Computer, Inc. All rights reserved.
*
- * @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.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @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. 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
* 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.
- *
- * @APPLE_LICENSE_HEADER_END@
+ * 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@
*/
/*
* HISTORY
#include <IOKit/system.h>
#include <mach/sync_policy.h>
#include <machine/machine_routines.h>
+#include <vm/vm_kern.h>
#include <libkern/c++/OSCPPDebug.h>
#include <IOKit/assert.h>
#include <IOKit/IOReturn.h>
-#include <IOKit/IOLib.h>
-#include <IOKit/IOLocks.h>
+#include <IOKit/IOLib.h>
+#include <IOKit/IOLocks.h>
#include <IOKit/IOMapper.h>
#include <IOKit/IOBufferMemoryDescriptor.h>
-#include <IOKit/IOKitDebug.h>
+#include <IOKit/IOKitDebug.h>
#include "IOKitKernelInternal.h"
-extern "C"
-{
+#ifdef IOALLOCDEBUG
+#include <libkern/OSDebug.h>
+#include <sys/sysctl.h>
+#endif
+
+#include "libkern/OSAtomic.h"
+#include <libkern/c++/OSKext.h>
+#include <IOKit/IOStatisticsPrivate.h>
+#include <os/log_private.h>
+#include <sys/msgbuf.h>
+#include <console/serial_protos.h>
+
+#if IOKITSTATS
+#define IOStatisticsAlloc(type, size) \
+do { \
+ IOStatistics::countAlloc(type, size); \
+} while (0)
+#else
+
+#define IOStatisticsAlloc(type, size)
+
+#endif /* IOKITSTATS */
+
+
+#define TRACK_ALLOC (IOTRACKING && (kIOTracking & gIOKitDebug))
+
+
+extern "C"
+{
mach_timespec_t IOZeroTvalspec = { 0, 0 };
extern ppnum_t pmap_find_phys(pmap_t pmap, addr64_t va);
-extern kern_return_t kmem_suballoc(
- vm_map_t parent,
- vm_offset_t *addr,
- vm_size_t size,
- boolean_t pageable,
- boolean_t anywhere,
- vm_map_t *new_map);
+extern int
+__doprnt(
+ const char *fmt,
+ va_list argp,
+ void (*putc)(int, void *),
+ void *arg,
+ int radix,
+ int is_log);
+
+extern void cons_putc_locked(char);
+extern void bsd_log_lock(void);
+extern void bsd_log_unlock(void);
+
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-lck_grp_t *IOLockGroup;
+lck_grp_t *IOLockGroup;
/*
* Global variables for use by iLogger
* Binary compatibility is not guaranteed for kexts that reference these symbols.
*/
-void *_giDebugLogInternal = NULL;
-void *_giDebugLogDataInternal = NULL;
-void *_giDebugReserved1 = NULL;
-void *_giDebugReserved2 = NULL;
+void *_giDebugLogInternal = NULL;
+void *_giDebugLogDataInternal = NULL;
+void *_giDebugReserved1 = NULL;
+void *_giDebugReserved2 = NULL;
+iopa_t gIOBMDPageAllocator;
/*
* Static variables for this module.
static queue_head_t gIOMallocContiguousEntries;
static lck_mtx_t * gIOMallocContiguousEntriesLock;
-enum { kIOMaxPageableMaps = 16 };
-enum { kIOPageableMapSize = 96 * 1024 * 1024 };
+#if __x86_64__
+enum { kIOMaxPageableMaps = 8 };
+enum { kIOPageableMapSize = 512 * 1024 * 1024 };
+enum { kIOPageableMaxMapSize = 512 * 1024 * 1024 };
+#else
+enum { kIOMaxPageableMaps = 16 };
+enum { kIOPageableMapSize = 96 * 1024 * 1024 };
enum { kIOPageableMaxMapSize = 96 * 1024 * 1024 };
+#endif
-/* LP64todo - these need to expand */
typedef struct {
- vm_map_t map;
- vm_offset_t address;
- vm_offset_t end;
+ vm_map_t map;
+ vm_offset_t address;
+ vm_offset_t end;
} IOMapData;
static struct {
- UInt32 count;
- UInt32 hint;
- IOMapData maps[ kIOMaxPageableMaps ];
- lck_mtx_t * lock;
+ UInt32 count;
+ UInt32 hint;
+ IOMapData maps[kIOMaxPageableMaps];
+ lck_mtx_t * lock;
} gIOKitPageableSpace;
+static iopa_t gIOPageablePageAllocator;
+
+uint32_t gIOPageAllocChunkBytes;
+
+#if IOTRACKING
+IOTrackingQueue * gIOMallocTracking;
+IOTrackingQueue * gIOWireTracking;
+IOTrackingQueue * gIOMapTracking;
+#endif /* IOTRACKING */
+
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-void IOLibInit(void)
+void
+IOLibInit(void)
{
- kern_return_t ret;
+ kern_return_t ret;
- static bool libInitialized;
+ static bool libInitialized;
- if(libInitialized)
- return;
+ if (libInitialized) {
+ return;
+ }
- gIOKitPageableSpace.maps[0].address = 0;
- ret = kmem_suballoc(kernel_map,
- &gIOKitPageableSpace.maps[0].address,
- kIOPageableMapSize,
- TRUE,
- VM_FLAGS_ANYWHERE,
- &gIOKitPageableSpace.maps[0].map);
- if (ret != KERN_SUCCESS)
- panic("failed to allocate iokit pageable map\n");
+ IOLockGroup = lck_grp_alloc_init("IOKit", LCK_GRP_ATTR_NULL);
+
+#if IOTRACKING
+ IOTrackingInit();
+ gIOMallocTracking = IOTrackingQueueAlloc(kIOMallocTrackingName, 0, 0, 0,
+ kIOTrackingQueueTypeAlloc,
+ 37);
+ gIOWireTracking = IOTrackingQueueAlloc(kIOWireTrackingName, 0, 0, page_size, 0, 0);
+
+ size_t mapCaptureSize = (kIOTracking & gIOKitDebug) ? page_size : (1024 * 1024);
+ gIOMapTracking = IOTrackingQueueAlloc(kIOMapTrackingName, 0, 0, mapCaptureSize,
+ kIOTrackingQueueTypeDefaultOn
+ | kIOTrackingQueueTypeMap
+ | kIOTrackingQueueTypeUser,
+ 0);
+#endif
- IOLockGroup = lck_grp_alloc_init("IOKit", LCK_GRP_ATTR_NULL);
+ gIOKitPageableSpace.maps[0].address = 0;
+ ret = kmem_suballoc(kernel_map,
+ &gIOKitPageableSpace.maps[0].address,
+ kIOPageableMapSize,
+ TRUE,
+ VM_FLAGS_ANYWHERE,
+ VM_MAP_KERNEL_FLAGS_NONE,
+ VM_KERN_MEMORY_IOKIT,
+ &gIOKitPageableSpace.maps[0].map);
+ if (ret != KERN_SUCCESS) {
+ panic("failed to allocate iokit pageable map\n");
+ }
- gIOKitPageableSpace.lock = lck_mtx_alloc_init(IOLockGroup, LCK_ATTR_NULL);
- gIOKitPageableSpace.maps[0].end = gIOKitPageableSpace.maps[0].address + kIOPageableMapSize;
- gIOKitPageableSpace.hint = 0;
- gIOKitPageableSpace.count = 1;
+ gIOKitPageableSpace.lock = lck_mtx_alloc_init(IOLockGroup, LCK_ATTR_NULL);
+ gIOKitPageableSpace.maps[0].end = gIOKitPageableSpace.maps[0].address + kIOPageableMapSize;
+ gIOKitPageableSpace.hint = 0;
+ gIOKitPageableSpace.count = 1;
- gIOMallocContiguousEntriesLock = lck_mtx_alloc_init(IOLockGroup, LCK_ATTR_NULL);
- queue_init( &gIOMallocContiguousEntries );
+ gIOMallocContiguousEntriesLock = lck_mtx_alloc_init(IOLockGroup, LCK_ATTR_NULL);
+ queue_init( &gIOMallocContiguousEntries );
- libInitialized = true;
+ gIOPageAllocChunkBytes = PAGE_SIZE / 64;
+ assert(sizeof(iopa_page_t) <= gIOPageAllocChunkBytes);
+ iopa_init(&gIOBMDPageAllocator);
+ iopa_init(&gIOPageablePageAllocator);
+
+
+ libInitialized = true;
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+static uint32_t
+log2up(uint32_t size)
+{
+ if (size <= 1) {
+ size = 0;
+ } else {
+ size = 32 - __builtin_clz(size - 1);
+ }
+ return size;
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-IOThread IOCreateThread(IOThreadFunc fcn, void *arg)
+IOThread
+IOCreateThread(IOThreadFunc fcn, void *arg)
{
- kern_return_t result;
- thread_t thread;
+ kern_return_t result;
+ thread_t thread;
result = kernel_thread_start((thread_continue_t)fcn, arg, &thread);
- if (result != KERN_SUCCESS)
- return (NULL);
+ if (result != KERN_SUCCESS) {
+ return NULL;
+ }
thread_deallocate(thread);
- return (thread);
+ return thread;
}
-void IOExitThread(void)
+void
+IOExitThread(void)
{
- (void) thread_terminate(current_thread());
+ (void) thread_terminate(current_thread());
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+#if IOTRACKING
+struct IOLibMallocHeader {
+ IOTrackingAddress tracking;
+};
+#endif
-void * IOMalloc(vm_size_t size)
+#if IOTRACKING
+#define sizeofIOLibMallocHeader (sizeof(IOLibMallocHeader) - (TRACK_ALLOC ? 0 : sizeof(IOTrackingAddress)))
+#else
+#define sizeofIOLibMallocHeader (0)
+#endif
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+void *
+IOMalloc(vm_size_t size)
{
- void * address;
+ void * address;
+ vm_size_t allocSize;
+
+ allocSize = size + sizeofIOLibMallocHeader;
+#if IOTRACKING
+ if (sizeofIOLibMallocHeader && (allocSize <= size)) {
+ return NULL; // overflow
+ }
+#endif
+ address = kalloc_tag_bt(allocSize, VM_KERN_MEMORY_IOKIT);
+
+ if (address) {
+#if IOTRACKING
+ if (TRACK_ALLOC) {
+ IOLibMallocHeader * hdr;
+ hdr = (typeof(hdr))address;
+ bzero(&hdr->tracking, sizeof(hdr->tracking));
+ hdr->tracking.address = ~(((uintptr_t) address) + sizeofIOLibMallocHeader);
+ hdr->tracking.size = size;
+ IOTrackingAdd(gIOMallocTracking, &hdr->tracking.tracking, size, true, VM_KERN_MEMORY_NONE);
+ }
+#endif
+ address = (typeof(address))(((uintptr_t) address) + sizeofIOLibMallocHeader);
- address = (void *)kalloc(size);
#if IOALLOCDEBUG
- if (address)
- debug_iomalloc_size += size;
+ OSAddAtomic(size, &debug_iomalloc_size);
#endif
- return address;
+ IOStatisticsAlloc(kIOStatisticsMalloc, size);
+ }
+
+ return address;
}
-void IOFree(void * address, vm_size_t size)
+void
+IOFree(void * inAddress, vm_size_t size)
{
- if (address) {
- kfree(address, size);
+ void * address;
+
+ if ((address = inAddress)) {
+ address = (typeof(address))(((uintptr_t) address) - sizeofIOLibMallocHeader);
+
+#if IOTRACKING
+ if (TRACK_ALLOC) {
+ IOLibMallocHeader * hdr;
+ struct ptr_reference { void * ptr; };
+ volatile struct ptr_reference ptr;
+
+ // we're about to block in IOTrackingRemove(), make sure the original pointer
+ // exists in memory or a register for leak scanning to find
+ ptr.ptr = inAddress;
+
+ hdr = (typeof(hdr))address;
+ if (size != hdr->tracking.size) {
+ OSReportWithBacktrace("bad IOFree size 0x%lx should be 0x%lx", size, hdr->tracking.size);
+ size = hdr->tracking.size;
+ }
+ IOTrackingRemove(gIOMallocTracking, &hdr->tracking.tracking, size);
+ ptr.ptr = NULL;
+ }
+#endif
+
+ kfree(address, size + sizeofIOLibMallocHeader);
#if IOALLOCDEBUG
- debug_iomalloc_size -= size;
+ OSAddAtomic(-size, &debug_iomalloc_size);
#endif
- }
+ IOStatisticsAlloc(kIOStatisticsFree, size);
+ }
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-void * IOMallocAligned(vm_size_t size, vm_size_t alignment)
+vm_tag_t
+IOMemoryTag(vm_map_t map)
{
- kern_return_t kr;
- vm_address_t address;
- vm_address_t allocationAddress;
- vm_size_t adjustedSize;
- vm_offset_t alignMask;
-
- if (size == 0)
- return 0;
- if (alignment == 0)
- alignment = 1;
+ vm_tag_t tag;
- alignMask = alignment - 1;
- adjustedSize = size + sizeof(vm_size_t) + sizeof(vm_address_t);
+ if (!vm_kernel_map_is_kernel(map)) {
+ return VM_MEMORY_IOKIT;
+ }
- if (adjustedSize >= page_size) {
+ tag = vm_tag_bt();
+ if (tag == VM_KERN_MEMORY_NONE) {
+ tag = VM_KERN_MEMORY_IOKIT;
+ }
- kr = kernel_memory_allocate(kernel_map, &address,
- size, alignMask, 0);
- if (KERN_SUCCESS != kr)
- address = 0;
+ return tag;
+}
- } else {
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
- adjustedSize += alignMask;
+struct IOLibPageMallocHeader {
+ mach_vm_size_t allocationSize;
+ mach_vm_address_t allocationAddress;
+#if IOTRACKING
+ IOTrackingAddress tracking;
+#endif
+};
- if (adjustedSize >= page_size) {
+#if IOTRACKING
+#define sizeofIOLibPageMallocHeader (sizeof(IOLibPageMallocHeader) - (TRACK_ALLOC ? 0 : sizeof(IOTrackingAddress)))
+#else
+#define sizeofIOLibPageMallocHeader (sizeof(IOLibPageMallocHeader))
+#endif
- kr = kernel_memory_allocate(kernel_map, &allocationAddress,
- adjustedSize, 0, 0);
- if (KERN_SUCCESS != kr)
- allocationAddress = 0;
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
- } else
- allocationAddress = (vm_address_t) kalloc(adjustedSize);
+void *
+IOMallocAligned(vm_size_t size, vm_size_t alignment)
+{
+ kern_return_t kr;
+ vm_offset_t address;
+ vm_offset_t allocationAddress;
+ vm_size_t adjustedSize;
+ uintptr_t alignMask;
+ IOLibPageMallocHeader * hdr;
+
+ if (size == 0) {
+ return 0;
+ }
- if (allocationAddress) {
- address = (allocationAddress + alignMask
- + (sizeof(vm_size_t) + sizeof(vm_address_t)))
- & (~alignMask);
+ alignment = (1UL << log2up(alignment));
+ alignMask = alignment - 1;
+ adjustedSize = size + sizeofIOLibPageMallocHeader;
+
+ if (size > adjustedSize) {
+ address = 0; /* overflow detected */
+ } else if (adjustedSize >= page_size) {
+ kr = kernel_memory_allocate(kernel_map, &address,
+ size, alignMask, 0, IOMemoryTag(kernel_map));
+ if (KERN_SUCCESS != kr) {
+ address = 0;
+ }
+#if IOTRACKING
+ else if (TRACK_ALLOC) {
+ IOTrackingAlloc(gIOMallocTracking, address, size);
+ }
+#endif
+ } else {
+ adjustedSize += alignMask;
+
+ if (adjustedSize >= page_size) {
+ kr = kernel_memory_allocate(kernel_map, &allocationAddress,
+ adjustedSize, 0, 0, IOMemoryTag(kernel_map));
+ if (KERN_SUCCESS != kr) {
+ allocationAddress = 0;
+ }
+ } else {
+ allocationAddress = (vm_address_t) kalloc_tag_bt(adjustedSize, VM_KERN_MEMORY_IOKIT);
+ }
- *((vm_size_t *)(address - sizeof(vm_size_t)
- - sizeof(vm_address_t))) = adjustedSize;
- *((vm_address_t *)(address - sizeof(vm_address_t)))
- = allocationAddress;
- } else
- address = 0;
- }
+ if (allocationAddress) {
+ address = (allocationAddress + alignMask + sizeofIOLibPageMallocHeader)
+ & (~alignMask);
+
+ hdr = (typeof(hdr))(address - sizeofIOLibPageMallocHeader);
+ hdr->allocationSize = adjustedSize;
+ hdr->allocationAddress = allocationAddress;
+#if IOTRACKING
+ if (TRACK_ALLOC) {
+ bzero(&hdr->tracking, sizeof(hdr->tracking));
+ hdr->tracking.address = ~address;
+ hdr->tracking.size = size;
+ IOTrackingAdd(gIOMallocTracking, &hdr->tracking.tracking, size, true, VM_KERN_MEMORY_NONE);
+ }
+#endif
+ } else {
+ address = 0;
+ }
+ }
- assert(0 == (address & alignMask));
+ assert(0 == (address & alignMask));
+ if (address) {
#if IOALLOCDEBUG
- if( address)
- debug_iomalloc_size += size;
+ OSAddAtomic(size, &debug_iomalloc_size);
#endif
+ IOStatisticsAlloc(kIOStatisticsMallocAligned, size);
+ }
- return (void *) address;
+ return (void *) address;
}
-void IOFreeAligned(void * address, vm_size_t size)
+void
+IOFreeAligned(void * address, vm_size_t size)
{
- vm_address_t allocationAddress;
- vm_size_t adjustedSize;
-
- if( !address)
- return;
-
- assert(size);
+ vm_address_t allocationAddress;
+ vm_size_t adjustedSize;
+ IOLibPageMallocHeader * hdr;
- adjustedSize = size + sizeof(vm_size_t) + sizeof(vm_address_t);
- if (adjustedSize >= page_size) {
-
- kmem_free( kernel_map, (vm_address_t) address, size);
+ if (!address) {
+ return;
+ }
- } else {
- adjustedSize = *((vm_size_t *)( (vm_address_t) address
- - sizeof(vm_address_t) - sizeof(vm_size_t)));
- allocationAddress = *((vm_address_t *)( (vm_address_t) address
- - sizeof(vm_address_t) ));
+ assert(size);
- if (adjustedSize >= page_size)
- kmem_free( kernel_map, allocationAddress, adjustedSize);
- else
- kfree((void *)allocationAddress, adjustedSize);
- }
+ adjustedSize = size + sizeofIOLibPageMallocHeader;
+ if (adjustedSize >= page_size) {
+#if IOTRACKING
+ if (TRACK_ALLOC) {
+ IOTrackingFree(gIOMallocTracking, (uintptr_t) address, size);
+ }
+#endif
+ kmem_free( kernel_map, (vm_offset_t) address, size);
+ } else {
+ hdr = (typeof(hdr))(((uintptr_t)address) - sizeofIOLibPageMallocHeader);
+ adjustedSize = hdr->allocationSize;
+ allocationAddress = hdr->allocationAddress;
+
+#if IOTRACKING
+ if (TRACK_ALLOC) {
+ if (size != hdr->tracking.size) {
+ OSReportWithBacktrace("bad IOFreeAligned size 0x%lx should be 0x%lx", size, hdr->tracking.size);
+ size = hdr->tracking.size;
+ }
+ IOTrackingRemove(gIOMallocTracking, &hdr->tracking.tracking, size);
+ }
+#endif
+ if (adjustedSize >= page_size) {
+ kmem_free( kernel_map, allocationAddress, adjustedSize);
+ } else {
+ kfree(allocationAddress, adjustedSize);
+ }
+ }
#if IOALLOCDEBUG
- debug_iomalloc_size -= size;
+ OSAddAtomic(-size, &debug_iomalloc_size);
#endif
+
+ IOStatisticsAlloc(kIOStatisticsFreeAligned, size);
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
void
-IOKernelFreeContiguous(mach_vm_address_t address, mach_vm_size_t size)
+IOKernelFreePhysical(mach_vm_address_t address, mach_vm_size_t size)
{
- mach_vm_address_t allocationAddress;
- mach_vm_size_t adjustedSize;
-
- if (!address)
- return;
-
- assert(size);
+ mach_vm_address_t allocationAddress;
+ mach_vm_size_t adjustedSize;
+ IOLibPageMallocHeader * hdr;
- adjustedSize = (2 * size) + sizeof(mach_vm_size_t) + sizeof(mach_vm_address_t);
- if (adjustedSize >= page_size) {
-
- kmem_free( kernel_map, (vm_address_t) address, size);
+ if (!address) {
+ return;
+ }
- } else {
+ assert(size);
- adjustedSize = *((mach_vm_size_t *)
- (address - sizeof(mach_vm_address_t) - sizeof(mach_vm_size_t)));
- allocationAddress = *((mach_vm_address_t *)
- (address - sizeof(mach_vm_address_t) ));
- kfree((void *)allocationAddress, adjustedSize);
- }
+ adjustedSize = (2 * size) + sizeofIOLibPageMallocHeader;
+ if (adjustedSize >= page_size) {
+#if IOTRACKING
+ if (TRACK_ALLOC) {
+ IOTrackingFree(gIOMallocTracking, address, size);
+ }
+#endif
+ kmem_free( kernel_map, (vm_offset_t) address, size);
+ } else {
+ hdr = (typeof(hdr))(((uintptr_t)address) - sizeofIOLibPageMallocHeader);
+ adjustedSize = hdr->allocationSize;
+ allocationAddress = hdr->allocationAddress;
+#if IOTRACKING
+ if (TRACK_ALLOC) {
+ IOTrackingRemove(gIOMallocTracking, &hdr->tracking.tracking, size);
+ }
+#endif
+ kfree(allocationAddress, adjustedSize);
+ }
+ IOStatisticsAlloc(kIOStatisticsFreeContiguous, size);
#if IOALLOCDEBUG
- debug_iomalloc_size -= size;
+ OSAddAtomic(-size, &debug_iomalloc_size);
#endif
}
+#if __arm__ || __arm64__
+extern unsigned long gPhysBase, gPhysSize;
+#endif
+
mach_vm_address_t
-IOKernelAllocateContiguous(mach_vm_size_t size, mach_vm_size_t alignment)
-{
- kern_return_t kr;
- mach_vm_address_t address;
- mach_vm_address_t allocationAddress;
- mach_vm_size_t adjustedSize;
- mach_vm_address_t alignMask;
-
- if (size == 0)
- return (0);
- if (alignment == 0)
- alignment = 1;
-
- alignMask = alignment - 1;
- adjustedSize = (2 * size) + sizeof(mach_vm_size_t) + sizeof(mach_vm_address_t);
-
- if (adjustedSize >= page_size)
- {
- vm_offset_t virt;
- adjustedSize = size;
- if (adjustedSize > page_size)
- {
- kr = kmem_alloc_contig(kernel_map, &virt, size,
- alignMask, 0);
+IOKernelAllocateWithPhysicalRestrict(mach_vm_size_t size, mach_vm_address_t maxPhys,
+ mach_vm_size_t alignment, bool contiguous)
+{
+ kern_return_t kr;
+ mach_vm_address_t address;
+ mach_vm_address_t allocationAddress;
+ mach_vm_size_t adjustedSize;
+ mach_vm_address_t alignMask;
+ IOLibPageMallocHeader * hdr;
+
+ if (size == 0) {
+ return 0;
+ }
+ if (alignment == 0) {
+ alignment = 1;
}
- else
- {
- kr = kernel_memory_allocate(kernel_map, &virt,
- size, alignMask, 0);
- }
- if (KERN_SUCCESS == kr)
- address = virt;
- else
- address = 0;
- }
- else
- {
- adjustedSize += alignMask;
- allocationAddress = (mach_vm_address_t) kalloc(adjustedSize);
-
- if (allocationAddress) {
-
- address = (allocationAddress + alignMask
- + (sizeof(mach_vm_size_t) + sizeof(mach_vm_address_t)))
- & (~alignMask);
-
- if (atop_32(address) != atop_32(address + size - 1))
- address = round_page_32(address);
-
- *((mach_vm_size_t *)(address - sizeof(mach_vm_size_t)
- - sizeof(mach_vm_address_t))) = adjustedSize;
- *((mach_vm_address_t *)(address - sizeof(mach_vm_address_t)))
- = allocationAddress;
- } else
- address = 0;
- }
+ alignMask = alignment - 1;
+
+ if (os_mul_and_add_overflow(2, size, sizeofIOLibPageMallocHeader, &adjustedSize)) {
+ return 0;
+ }
+
+ contiguous = (contiguous && (adjustedSize > page_size))
+ || (alignment > page_size);
+
+ if (contiguous || maxPhys) {
+ int options = 0;
+ vm_offset_t virt;
+
+ adjustedSize = size;
+ contiguous = (contiguous && (adjustedSize > page_size))
+ || (alignment > page_size);
+
+ if (!contiguous) {
+#if __arm__ || __arm64__
+ if (maxPhys >= (mach_vm_address_t)(gPhysBase + gPhysSize)) {
+ maxPhys = 0;
+ } else
+#endif
+ if (maxPhys <= 0xFFFFFFFF) {
+ maxPhys = 0;
+ options |= KMA_LOMEM;
+ } else if (gIOLastPage && (atop_64(maxPhys) > gIOLastPage)) {
+ maxPhys = 0;
+ }
+ }
+ if (contiguous || maxPhys) {
+ kr = kmem_alloc_contig(kernel_map, &virt, size,
+ alignMask, atop(maxPhys), atop(alignMask), 0, IOMemoryTag(kernel_map));
+ } else {
+ kr = kernel_memory_allocate(kernel_map, &virt,
+ size, alignMask, options, IOMemoryTag(kernel_map));
+ }
+ if (KERN_SUCCESS == kr) {
+ address = virt;
+#if IOTRACKING
+ if (TRACK_ALLOC) {
+ IOTrackingAlloc(gIOMallocTracking, address, size);
+ }
+#endif
+ } else {
+ address = 0;
+ }
+ } else {
+ adjustedSize += alignMask;
+ if (adjustedSize < size) {
+ return 0;
+ }
+ allocationAddress = (mach_vm_address_t) kalloc_tag_bt(adjustedSize, VM_KERN_MEMORY_IOKIT);
+
+ if (allocationAddress) {
+ address = (allocationAddress + alignMask + sizeofIOLibPageMallocHeader)
+ & (~alignMask);
+
+ if (atop_32(address) != atop_32(address + size - 1)) {
+ address = round_page(address);
+ }
+
+ hdr = (typeof(hdr))(address - sizeofIOLibPageMallocHeader);
+ hdr->allocationSize = adjustedSize;
+ hdr->allocationAddress = allocationAddress;
+#if IOTRACKING
+ if (TRACK_ALLOC) {
+ bzero(&hdr->tracking, sizeof(hdr->tracking));
+ hdr->tracking.address = ~address;
+ hdr->tracking.size = size;
+ IOTrackingAdd(gIOMallocTracking, &hdr->tracking.tracking, size, true, VM_KERN_MEMORY_NONE);
+ }
+#endif
+ } else {
+ address = 0;
+ }
+ }
+
+ if (address) {
+ IOStatisticsAlloc(kIOStatisticsMallocContiguous, size);
#if IOALLOCDEBUG
- if (address)
- debug_iomalloc_size += size;
+ OSAddAtomic(size, &debug_iomalloc_size);
#endif
+ }
- return (address);
+ return address;
}
+
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-struct _IOMallocContiguousEntry
-{
- mach_vm_address_t virtualAddr;
- IOBufferMemoryDescriptor * md;
- queue_chain_t link;
+struct _IOMallocContiguousEntry {
+ mach_vm_address_t virtualAddr;
+ IOBufferMemoryDescriptor * md;
+ queue_chain_t link;
};
typedef struct _IOMallocContiguousEntry _IOMallocContiguousEntry;
-void * IOMallocContiguous(vm_size_t size, vm_size_t alignment,
- IOPhysicalAddress * physicalAddress)
+void *
+IOMallocContiguous(vm_size_t size, vm_size_t alignment,
+ IOPhysicalAddress * physicalAddress)
{
- mach_vm_address_t address = 0;
+ mach_vm_address_t address = 0;
- if (size == 0)
- return 0;
- if (alignment == 0)
- alignment = 1;
-
- /* Do we want a physical address? */
- if (!physicalAddress)
- {
- address = IOKernelAllocateContiguous(size, alignment);
- }
- else do
- {
- IOBufferMemoryDescriptor * bmd;
- mach_vm_address_t physicalMask;
- vm_offset_t alignMask;
-
- alignMask = alignment - 1;
- physicalMask = 0xFFFFFFFF ^ (alignMask & PAGE_MASK);
- bmd = IOBufferMemoryDescriptor::inTaskWithPhysicalMask(
- kernel_task, kIOMemoryPhysicallyContiguous, size, physicalMask);
- if (!bmd)
- break;
-
- _IOMallocContiguousEntry *
- entry = IONew(_IOMallocContiguousEntry, 1);
- if (!entry)
- {
- bmd->release();
- break;
+ if (size == 0) {
+ return 0;
+ }
+ if (alignment == 0) {
+ alignment = 1;
}
- entry->virtualAddr = (mach_vm_address_t) bmd->getBytesNoCopy();
- entry->md = bmd;
- lck_mtx_lock(gIOMallocContiguousEntriesLock);
- queue_enter( &gIOMallocContiguousEntries, entry,
- _IOMallocContiguousEntry *, link );
- lck_mtx_unlock(gIOMallocContiguousEntriesLock);
- address = (mach_vm_address_t) entry->virtualAddr;
- *physicalAddress = bmd->getPhysicalAddress();
- }
- while (false);
+ /* Do we want a physical address? */
+ if (!physicalAddress) {
+ address = IOKernelAllocateWithPhysicalRestrict(size, 0 /*maxPhys*/, alignment, true);
+ } else {
+ do {
+ IOBufferMemoryDescriptor * bmd;
+ mach_vm_address_t physicalMask;
+ vm_offset_t alignMask;
+
+ alignMask = alignment - 1;
+ physicalMask = (0xFFFFFFFF ^ alignMask);
+
+ bmd = IOBufferMemoryDescriptor::inTaskWithPhysicalMask(
+ kernel_task, kIOMemoryPhysicallyContiguous, size, physicalMask);
+ if (!bmd) {
+ break;
+ }
+
+ _IOMallocContiguousEntry *
+ entry = IONew(_IOMallocContiguousEntry, 1);
+ if (!entry) {
+ bmd->release();
+ break;
+ }
+ entry->virtualAddr = (mach_vm_address_t) bmd->getBytesNoCopy();
+ entry->md = bmd;
+ lck_mtx_lock(gIOMallocContiguousEntriesLock);
+ queue_enter( &gIOMallocContiguousEntries, entry,
+ _IOMallocContiguousEntry *, link );
+ lck_mtx_unlock(gIOMallocContiguousEntriesLock);
+
+ address = (mach_vm_address_t) entry->virtualAddr;
+ *physicalAddress = bmd->getPhysicalAddress();
+ }while (false);
+ }
- return (void *) address;
+ return (void *) address;
}
-void IOFreeContiguous(void * _address, vm_size_t size)
+void
+IOFreeContiguous(void * _address, vm_size_t size)
{
- _IOMallocContiguousEntry * entry;
- IOMemoryDescriptor * md = NULL;
+ _IOMallocContiguousEntry * entry;
+ IOMemoryDescriptor * md = NULL;
- mach_vm_address_t address = (mach_vm_address_t) _address;
+ mach_vm_address_t address = (mach_vm_address_t) _address;
- if( !address)
- return;
+ if (!address) {
+ return;
+ }
- assert(size);
+ assert(size);
- lck_mtx_lock(gIOMallocContiguousEntriesLock);
- queue_iterate( &gIOMallocContiguousEntries, entry,
- _IOMallocContiguousEntry *, link )
- {
- if( entry->virtualAddr == address ) {
- md = entry->md;
- queue_remove( &gIOMallocContiguousEntries, entry,
+ lck_mtx_lock(gIOMallocContiguousEntriesLock);
+ queue_iterate( &gIOMallocContiguousEntries, entry,
+ _IOMallocContiguousEntry *, link )
+ {
+ if (entry->virtualAddr == address) {
+ md = entry->md;
+ queue_remove( &gIOMallocContiguousEntries, entry,
_IOMallocContiguousEntry *, link );
- break;
+ break;
+ }
}
- }
- lck_mtx_unlock(gIOMallocContiguousEntriesLock);
+ lck_mtx_unlock(gIOMallocContiguousEntriesLock);
- if (md)
- {
- md->release();
- IODelete(entry, _IOMallocContiguousEntry, 1);
- }
- else
- {
- IOKernelFreeContiguous((mach_vm_address_t) address, size);
- }
+ if (md) {
+ md->release();
+ IODelete(entry, _IOMallocContiguousEntry, 1);
+ } else {
+ IOKernelFreePhysical((mach_vm_address_t) address, size);
+ }
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-kern_return_t IOIteratePageableMaps(vm_size_t size,
- IOIteratePageableMapsCallback callback, void * ref)
-{
- kern_return_t kr = kIOReturnNotReady;
- vm_size_t segSize;
- UInt32 attempts;
- UInt32 index;
- vm_offset_t min;
- vm_map_t map;
-
- if (size > kIOPageableMaxMapSize)
- return( kIOReturnBadArgument );
-
- do {
- index = gIOKitPageableSpace.hint;
- attempts = gIOKitPageableSpace.count;
- while( attempts--) {
- kr = (*callback)(gIOKitPageableSpace.maps[index].map, ref);
- if( KERN_SUCCESS == kr) {
- gIOKitPageableSpace.hint = index;
- break;
- }
- if( index)
- index--;
- else
- index = gIOKitPageableSpace.count - 1;
- }
- if( KERN_SUCCESS == kr)
- break;
-
- lck_mtx_lock( gIOKitPageableSpace.lock );
-
- index = gIOKitPageableSpace.count;
- if( index >= (kIOMaxPageableMaps - 1)) {
- lck_mtx_unlock( gIOKitPageableSpace.lock );
- break;
- }
-
- if( size < kIOPageableMapSize)
- segSize = kIOPageableMapSize;
- else
- segSize = size;
-
- min = 0;
- kr = kmem_suballoc(kernel_map,
- &min,
- segSize,
- TRUE,
- VM_FLAGS_ANYWHERE,
- &map);
- if( KERN_SUCCESS != kr) {
- lck_mtx_unlock( gIOKitPageableSpace.lock );
- break;
- }
-
- gIOKitPageableSpace.maps[index].map = map;
- gIOKitPageableSpace.maps[index].address = min;
- gIOKitPageableSpace.maps[index].end = min + segSize;
- gIOKitPageableSpace.hint = index;
- gIOKitPageableSpace.count = index + 1;
-
- lck_mtx_unlock( gIOKitPageableSpace.lock );
-
- } while( true );
-
- return kr;
-}
-
-struct IOMallocPageableRef
-{
- vm_address_t address;
- vm_size_t size;
+kern_return_t
+IOIteratePageableMaps(vm_size_t size,
+ IOIteratePageableMapsCallback callback, void * ref)
+{
+ kern_return_t kr = kIOReturnNotReady;
+ vm_size_t segSize;
+ UInt32 attempts;
+ UInt32 index;
+ vm_offset_t min;
+ vm_map_t map;
+
+ if (size > kIOPageableMaxMapSize) {
+ return kIOReturnBadArgument;
+ }
+
+ do {
+ index = gIOKitPageableSpace.hint;
+ attempts = gIOKitPageableSpace.count;
+ while (attempts--) {
+ kr = (*callback)(gIOKitPageableSpace.maps[index].map, ref);
+ if (KERN_SUCCESS == kr) {
+ gIOKitPageableSpace.hint = index;
+ break;
+ }
+ if (index) {
+ index--;
+ } else {
+ index = gIOKitPageableSpace.count - 1;
+ }
+ }
+ if (KERN_NO_SPACE != kr) {
+ break;
+ }
+
+ lck_mtx_lock( gIOKitPageableSpace.lock );
+
+ index = gIOKitPageableSpace.count;
+ if (index >= (kIOMaxPageableMaps - 1)) {
+ lck_mtx_unlock( gIOKitPageableSpace.lock );
+ break;
+ }
+
+ if (size < kIOPageableMapSize) {
+ segSize = kIOPageableMapSize;
+ } else {
+ segSize = size;
+ }
+
+ min = 0;
+ kr = kmem_suballoc(kernel_map,
+ &min,
+ segSize,
+ TRUE,
+ VM_FLAGS_ANYWHERE,
+ VM_MAP_KERNEL_FLAGS_NONE,
+ VM_KERN_MEMORY_IOKIT,
+ &map);
+ if (KERN_SUCCESS != kr) {
+ lck_mtx_unlock( gIOKitPageableSpace.lock );
+ break;
+ }
+
+ gIOKitPageableSpace.maps[index].map = map;
+ gIOKitPageableSpace.maps[index].address = min;
+ gIOKitPageableSpace.maps[index].end = min + segSize;
+ gIOKitPageableSpace.hint = index;
+ gIOKitPageableSpace.count = index + 1;
+
+ lck_mtx_unlock( gIOKitPageableSpace.lock );
+ } while (true);
+
+ return kr;
+}
+
+struct IOMallocPageableRef {
+ vm_offset_t address;
+ vm_size_t size;
+ vm_tag_t tag;
};
-static kern_return_t IOMallocPageableCallback(vm_map_t map, void * _ref)
+static kern_return_t
+IOMallocPageableCallback(vm_map_t map, void * _ref)
{
- struct IOMallocPageableRef * ref = (struct IOMallocPageableRef *) _ref;
- kern_return_t kr;
+ struct IOMallocPageableRef * ref = (struct IOMallocPageableRef *) _ref;
+ kern_return_t kr;
- kr = kmem_alloc_pageable( map, &ref->address, ref->size );
+ kr = kmem_alloc_pageable( map, &ref->address, ref->size, ref->tag );
- return( kr );
+ return kr;
}
-void * IOMallocPageable(vm_size_t size, vm_size_t alignment)
+static void *
+IOMallocPageablePages(vm_size_t size, vm_size_t alignment, vm_tag_t tag)
{
- kern_return_t kr = kIOReturnNotReady;
- struct IOMallocPageableRef ref;
+ kern_return_t kr = kIOReturnNotReady;
+ struct IOMallocPageableRef ref;
- if (alignment > page_size)
- return( 0 );
- if (size > kIOPageableMaxMapSize)
- return( 0 );
+ if (alignment > page_size) {
+ return 0;
+ }
+ if (size > kIOPageableMaxMapSize) {
+ return 0;
+ }
- ref.size = size;
- kr = IOIteratePageableMaps( size, &IOMallocPageableCallback, &ref );
- if( kIOReturnSuccess != kr)
- ref.address = 0;
+ ref.size = size;
+ ref.tag = tag;
+ kr = IOIteratePageableMaps( size, &IOMallocPageableCallback, &ref );
+ if (kIOReturnSuccess != kr) {
+ ref.address = 0;
+ }
-#if IOALLOCDEBUG
- if( ref.address)
- debug_iomallocpageable_size += round_page_32(size);
-#endif
+ return (void *) ref.address;
+}
- return( (void *) ref.address );
+vm_map_t
+IOPageableMapForAddress( uintptr_t address )
+{
+ vm_map_t map = 0;
+ UInt32 index;
+
+ for (index = 0; index < gIOKitPageableSpace.count; index++) {
+ if ((address >= gIOKitPageableSpace.maps[index].address)
+ && (address < gIOKitPageableSpace.maps[index].end)) {
+ map = gIOKitPageableSpace.maps[index].map;
+ break;
+ }
+ }
+ if (!map) {
+ panic("IOPageableMapForAddress: null");
+ }
+
+ return map;
}
-vm_map_t IOPageableMapForAddress( vm_address_t address )
+static void
+IOFreePageablePages(void * address, vm_size_t size)
{
- vm_map_t map = 0;
- UInt32 index;
-
- for( index = 0; index < gIOKitPageableSpace.count; index++) {
- if( (address >= gIOKitPageableSpace.maps[index].address)
- && (address < gIOKitPageableSpace.maps[index].end) ) {
- map = gIOKitPageableSpace.maps[index].map;
- break;
- }
- }
- if( !map)
- IOPanic("IOPageableMapForAddress: null");
+ vm_map_t map;
+
+ map = IOPageableMapForAddress((vm_address_t) address);
+ if (map) {
+ kmem_free( map, (vm_offset_t) address, size);
+ }
+}
- return( map );
+static uintptr_t
+IOMallocOnePageablePage(iopa_t * a)
+{
+ return (uintptr_t) IOMallocPageablePages(page_size, page_size, VM_KERN_MEMORY_IOKIT);
}
-void IOFreePageable(void * address, vm_size_t size)
+void *
+IOMallocPageable(vm_size_t size, vm_size_t alignment)
{
- vm_map_t map;
-
- map = IOPageableMapForAddress( (vm_address_t) address);
- if( map)
- kmem_free( map, (vm_offset_t) address, size);
+ void * addr;
+
+ if (size >= (page_size - 4 * gIOPageAllocChunkBytes)) {
+ addr = IOMallocPageablePages(size, alignment, IOMemoryTag(kernel_map));
+ } else {
+ addr = ((void *) iopa_alloc(&gIOPageablePageAllocator, &IOMallocOnePageablePage, size, alignment));
+ }
+
+ if (addr) {
+#if IOALLOCDEBUG
+ OSAddAtomicLong(size, &debug_iomallocpageable_size);
+#endif
+ IOStatisticsAlloc(kIOStatisticsMallocPageable, size);
+ }
+ return addr;
+}
+
+void
+IOFreePageable(void * address, vm_size_t size)
+{
#if IOALLOCDEBUG
- debug_iomallocpageable_size -= round_page_32(size);
+ OSAddAtomicLong(-size, &debug_iomallocpageable_size);
#endif
+ IOStatisticsAlloc(kIOStatisticsFreePageable, size);
+
+ if (size < (page_size - 4 * gIOPageAllocChunkBytes)) {
+ address = (void *) iopa_free(&gIOPageablePageAllocator, (uintptr_t) address, size);
+ size = page_size;
+ }
+ if (address) {
+ IOFreePageablePages(address, size);
+ }
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-IOReturn IOSetProcessorCacheMode( task_t task, IOVirtualAddress address,
- IOByteCount length, IOOptionBits cacheMode )
+extern "C" void
+iopa_init(iopa_t * a)
{
- IOReturn ret = kIOReturnSuccess;
- ppnum_t pagenum;
+ bzero(a, sizeof(*a));
+ a->lock = IOLockAlloc();
+ queue_init(&a->list);
+}
- if( task != kernel_task)
- return( kIOReturnUnsupported );
+static uintptr_t
+iopa_allocinpage(iopa_page_t * pa, uint32_t count, uint64_t align)
+{
+ uint32_t n, s;
+ uint64_t avail = pa->avail;
- length = round_page_32(address + length) - trunc_page_32( address );
- address = trunc_page_32( address );
+ assert(avail);
- // make map mode
- cacheMode = (cacheMode << kIOMapCacheShift) & kIOMapCacheMask;
+ // find strings of count 1 bits in avail
+ for (n = count; n > 1; n -= s) {
+ s = n >> 1;
+ avail = avail & (avail << s);
+ }
+ // and aligned
+ avail &= align;
+
+ if (avail) {
+ n = __builtin_clzll(avail);
+ pa->avail &= ~((-1ULL << (64 - count)) >> n);
+ if (!pa->avail && pa->link.next) {
+ remque(&pa->link);
+ pa->link.next = 0;
+ }
+ return n * gIOPageAllocChunkBytes + trunc_page((uintptr_t) pa);
+ }
- while( (kIOReturnSuccess == ret) && (length > 0) ) {
+ return 0;
+}
- // 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, ptoa_64(pagenum), page_size, cacheMode );
- } else
- ret = kIOReturnVMError;
+uintptr_t
+iopa_alloc(iopa_t * a, iopa_proc_t alloc, vm_size_t bytes, uint32_t balign)
+{
+ static const uint64_t align_masks[] = {
+ 0xFFFFFFFFFFFFFFFF,
+ 0xAAAAAAAAAAAAAAAA,
+ 0x8888888888888888,
+ 0x8080808080808080,
+ 0x8000800080008000,
+ 0x8000000080000000,
+ 0x8000000000000000,
+ };
+ iopa_page_t * pa;
+ uintptr_t addr = 0;
+ uint32_t count;
+ uint64_t align;
+
+ if (!bytes) {
+ bytes = 1;
+ }
+ count = (bytes + gIOPageAllocChunkBytes - 1) / gIOPageAllocChunkBytes;
+ align = align_masks[log2up((balign + gIOPageAllocChunkBytes - 1) / gIOPageAllocChunkBytes)];
+
+ IOLockLock(a->lock);
+ __IGNORE_WCASTALIGN(pa = (typeof(pa))queue_first(&a->list));
+ while (!queue_end(&a->list, &pa->link)) {
+ addr = iopa_allocinpage(pa, count, align);
+ if (addr) {
+ a->bytecount += bytes;
+ break;
+ }
+ __IGNORE_WCASTALIGN(pa = (typeof(pa))queue_next(&pa->link));
+ }
+ IOLockUnlock(a->lock);
+
+ if (!addr) {
+ addr = alloc(a);
+ if (addr) {
+ pa = (typeof(pa))(addr + page_size - gIOPageAllocChunkBytes);
+ pa->signature = kIOPageAllocSignature;
+ pa->avail = -2ULL;
+
+ addr = iopa_allocinpage(pa, count, align);
+ IOLockLock(a->lock);
+ if (pa->avail) {
+ enqueue_head(&a->list, &pa->link);
+ }
+ a->pagecount++;
+ if (addr) {
+ a->bytecount += bytes;
+ }
+ IOLockUnlock(a->lock);
+ }
+ }
+
+ assert((addr & ((1 << log2up(balign)) - 1)) == 0);
+ return addr;
+}
- address += page_size;
- length -= page_size;
- }
+uintptr_t
+iopa_free(iopa_t * a, uintptr_t addr, vm_size_t bytes)
+{
+ iopa_page_t * pa;
+ uint32_t count;
+ uintptr_t chunk;
+
+ if (!bytes) {
+ bytes = 1;
+ }
+
+ chunk = (addr & page_mask);
+ assert(0 == (chunk & (gIOPageAllocChunkBytes - 1)));
+
+ pa = (typeof(pa))(addr | (page_size - gIOPageAllocChunkBytes));
+ assert(kIOPageAllocSignature == pa->signature);
+
+ count = (bytes + gIOPageAllocChunkBytes - 1) / gIOPageAllocChunkBytes;
+ chunk /= gIOPageAllocChunkBytes;
+
+ IOLockLock(a->lock);
+ if (!pa->avail) {
+ assert(!pa->link.next);
+ enqueue_tail(&a->list, &pa->link);
+ }
+ pa->avail |= ((-1ULL << (64 - count)) >> chunk);
+ if (pa->avail != -2ULL) {
+ pa = 0;
+ } else {
+ remque(&pa->link);
+ pa->link.next = 0;
+ pa->signature = 0;
+ a->pagecount--;
+ // page to free
+ pa = (typeof(pa))trunc_page(pa);
+ }
+ a->bytecount -= bytes;
+ IOLockUnlock(a->lock);
- return( ret );
+ return (uintptr_t) pa;
}
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-IOReturn IOFlushProcessorCache( task_t task, IOVirtualAddress address,
- IOByteCount length )
+IOReturn
+IOSetProcessorCacheMode( task_t task, IOVirtualAddress address,
+ IOByteCount length, IOOptionBits cacheMode )
{
- if( task != kernel_task)
- return( kIOReturnUnsupported );
+ IOReturn ret = kIOReturnSuccess;
+ ppnum_t pagenum;
-#if __ppc__
- flush_dcache64( (addr64_t) address, (unsigned) length, false );
-#endif
+ if (task != kernel_task) {
+ return kIOReturnUnsupported;
+ }
+ if ((address | length) & PAGE_MASK) {
+// OSReportWithBacktrace("IOSetProcessorCacheMode(0x%x, 0x%x, 0x%x) fails\n", address, length, cacheMode);
+ return kIOReturnUnsupported;
+ }
+ length = round_page(address + length) - trunc_page( address );
+ address = trunc_page( address );
+
+ // make map mode
+ cacheMode = (cacheMode << kIOMapCacheShift) & kIOMapCacheMask;
+
+ while ((kIOReturnSuccess == ret) && (length > 0)) {
+ // 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, ptoa_64(pagenum), page_size, cacheMode );
+ } else {
+ ret = kIOReturnVMError;
+ }
+
+ address += page_size;
+ length -= page_size;
+ }
- return( kIOReturnSuccess );
+ return ret;
}
-/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-SInt32 OSKernelStackRemaining( void )
+IOReturn
+IOFlushProcessorCache( task_t task, IOVirtualAddress address,
+ IOByteCount length )
{
- SInt32 stack;
+ if (task != kernel_task) {
+ return kIOReturnUnsupported;
+ }
- stack = (((SInt32) &stack) & (KERNEL_STACK_SIZE - 1));
+ flush_dcache64((addr64_t) address, (unsigned) length, false );
- return( stack );
+ return kIOReturnSuccess;
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-void IOSleep(unsigned milliseconds)
+vm_offset_t
+OSKernelStackRemaining( void )
+{
+ return ml_stack_remaining();
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+/*
+ * Spin for indicated number of milliseconds.
+ */
+void
+IOSleep(unsigned milliseconds)
{
- delay_for_interval(milliseconds, kMillisecondScale);
+ delay_for_interval(milliseconds, kMillisecondScale);
+}
+
+/*
+ * Spin for indicated number of milliseconds, and potentially an
+ * additional number of milliseconds up to the leeway values.
+ */
+void
+IOSleepWithLeeway(unsigned intervalMilliseconds, unsigned leewayMilliseconds)
+{
+ delay_for_interval_with_leeway(intervalMilliseconds, leewayMilliseconds, kMillisecondScale);
}
/*
* Spin for indicated number of microseconds.
*/
-void IODelay(unsigned microseconds)
+void
+IODelay(unsigned microseconds)
{
- delay_for_interval(microseconds, kMicrosecondScale);
+ delay_for_interval(microseconds, kMicrosecondScale);
+}
+
+/*
+ * Spin for indicated number of nanoseconds.
+ */
+void
+IOPause(unsigned nanoseconds)
+{
+ delay_for_interval(nanoseconds, kNanosecondScale);
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-void IOLog(const char *format, ...)
+static void _IOLogv(const char *format, va_list ap, void *caller) __printflike(1, 0);
+
+__attribute__((noinline, not_tail_called))
+void
+IOLog(const char *format, ...)
{
+ void *caller = __builtin_return_address(0);
va_list ap;
- extern void conslog_putc(char);
- extern void logwakeup(void);
va_start(ap, format);
- _doprnt(format, &ap, conslog_putc, 16);
+ _IOLogv(format, ap, caller);
va_end(ap);
}
-void IOPanic(const char *reason)
+__attribute__((noinline, not_tail_called))
+void
+IOLogv(const char *format, va_list ap)
+{
+ void *caller = __builtin_return_address(0);
+ _IOLogv(format, ap, caller);
+}
+
+void
+_IOLogv(const char *format, va_list ap, void *caller)
+{
+ va_list ap2;
+ struct console_printbuf_state info_data;
+ console_printbuf_state_init(&info_data, TRUE, TRUE);
+
+ va_copy(ap2, ap);
+
+ os_log_with_args(OS_LOG_DEFAULT, OS_LOG_TYPE_DEFAULT, format, ap, caller);
+
+ __doprnt(format, ap2, console_printbuf_putc, &info_data, 16, TRUE);
+ console_printbuf_clear(&info_data);
+ va_end(ap2);
+
+ assertf(ml_get_interrupts_enabled() || ml_is_quiescing() || debug_mode_active() || !gCPUsRunning, "IOLog called with interrupts disabled");
+}
+
+#if !__LP64__
+void
+IOPanic(const char *reason)
{
- panic(reason);
+ panic("%s", reason);
+}
+#endif
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+void
+IOKitKernelLogBuffer(const char * title, const void * buffer, size_t size,
+ void (*output)(const char *format, ...))
+{
+ uint8_t c, chars[17];
+ size_t idx;
+
+ output("%s(0x%x):\n", title, size);
+ if (size > 4096) {
+ size = 4096;
+ }
+ chars[16] = idx = 0;
+ while (true) {
+ if (!(idx & 15)) {
+ if (idx) {
+ output(" |%s|\n", chars);
+ }
+ if (idx >= size) {
+ break;
+ }
+ output("%04x: ", idx);
+ } else if (!(idx & 7)) {
+ output(" ");
+ }
+
+ c = ((char *)buffer)[idx];
+ output("%02x ", c);
+ chars[idx & 15] = ((c >= 0x20) && (c <= 0x7f)) ? c : ' ';
+
+ idx++;
+ if ((idx == size) && (idx & 15)) {
+ chars[idx & 15] = 0;
+ while (idx & 15) {
+ idx++;
+ output(" ");
+ }
+ }
+ }
}
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*
* Convert a integer constant (typically a #define or enum) to a string.
*/
-static char noValue[80]; // that's pretty
+static char noValue[80]; // that's pretty
-const char *IOFindNameForValue(int value, const IONamedValue *regValueArray)
+const char *
+IOFindNameForValue(int value, const IONamedValue *regValueArray)
{
- for( ; regValueArray->name; regValueArray++) {
- if(regValueArray->value == value)
- return(regValueArray->name);
+ for (; regValueArray->name; regValueArray++) {
+ if (regValueArray->value == value) {
+ return regValueArray->name;
+ }
}
- sprintf(noValue, "0x%x (UNDEFINED)", value);
- return((const char *)noValue);
+ snprintf(noValue, sizeof(noValue), "0x%x (UNDEFINED)", value);
+ return (const char *)noValue;
}
-IOReturn IOFindValueForName(const char *string,
- const IONamedValue *regValueArray,
- int *value)
+IOReturn
+IOFindValueForName(const char *string,
+ const IONamedValue *regValueArray,
+ int *value)
{
- for( ; regValueArray->name; regValueArray++) {
- if(!strcmp(regValueArray->name, string)) {
+ for (; regValueArray->name; regValueArray++) {
+ if (!strcmp(regValueArray->name, string)) {
*value = regValueArray->value;
return kIOReturnSuccess;
}
return kIOReturnBadArgument;
}
+OSString *
+IOCopyLogNameForPID(int pid)
+{
+ char buf[128];
+ size_t len;
+ snprintf(buf, sizeof(buf), "pid %d, ", pid);
+ len = strlen(buf);
+ proc_name(pid, buf + len, sizeof(buf) - len);
+ return OSString::withCString(buf);
+}
+
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
-IOAlignment IOSizeToAlignment(unsigned int size)
+IOAlignment
+IOSizeToAlignment(unsigned int size)
{
- register int shift;
- const int intsize = sizeof(unsigned int) * 8;
-
- for (shift = 1; shift < intsize; shift++) {
- if (size & 0x80000000)
- return (IOAlignment)(intsize - shift);
- size <<= 1;
- }
- return 0;
+ int shift;
+ const int intsize = sizeof(unsigned int) * 8;
+
+ for (shift = 1; shift < intsize; shift++) {
+ if (size & 0x80000000) {
+ return (IOAlignment)(intsize - shift);
+ }
+ size <<= 1;
+ }
+ return 0;
}
-unsigned int IOAlignmentToSize(IOAlignment align)
+unsigned int
+IOAlignmentToSize(IOAlignment align)
{
- unsigned int size;
-
- for (size = 1; align; align--) {
- size <<= 1;
- }
- return size;
-}
+ unsigned int size;
+ for (size = 1; align; align--) {
+ size <<= 1;
+ }
+ return size;
+}
} /* extern "C" */
projects / apple / xnu.git / blobdiff