* Copyright (c) 2000-2006 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
* 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,
* 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@
*/
#include <zone_debug.h>
//#include <mach/mach_host_server.h>
#include <mach/mach_types.h>
-#include <machine/machparam.h> /* spl definitions */
+#include <machine/machparam.h> /* spl definitions */
#include <ipc/ipc_port.h>
#include <ipc/ipc_space.h>
#if defined(__i386__) || defined(__x86_64__)
#include <i386/pmap.h>
#endif
-#include <IOKit/IOTypes.h>
+#if defined(__arm__) || defined(__arm64__)
+#include <arm/pmap.h>
+#endif
+#include <IOKit/IOKitServer.h>
#define EXTERN
#define MIGEXTERN
-/*
- * Functions in iokit:IOUserClient.cpp
- */
-
-extern void iokit_add_reference( io_object_t obj );
-extern void iokit_add_connect_reference( io_object_t obj );
-
-extern ipc_port_t iokit_port_for_object( io_object_t obj,
- ipc_kobject_type_t type );
-
-extern kern_return_t iokit_client_died( io_object_t obj,
- ipc_port_t port, ipc_kobject_type_t type, mach_port_mscount_t * mscount );
-
-extern kern_return_t
-iokit_client_memory_for_type(
- io_object_t connect,
- unsigned int type,
- unsigned int * flags,
- vm_address_t * address,
- vm_size_t * size );
-
-
-extern ppnum_t IOGetLastPageNumber(void);
-
-/*
- * Functions imported by iokit:IOUserClient.cpp
- */
-
-extern ipc_port_t iokit_alloc_object_port( io_object_t obj,
- ipc_kobject_type_t type );
-
-extern kern_return_t iokit_destroy_object_port( ipc_port_t port );
-
-extern mach_port_name_t iokit_make_send_right( task_t task,
- io_object_t obj, ipc_kobject_type_t type );
-
-extern kern_return_t iokit_mod_send_right( task_t task, mach_port_name_t name, mach_port_delta_t delta );
-
-extern io_object_t iokit_lookup_connect_ref(io_object_t clientRef, ipc_space_t task);
-
-extern io_object_t iokit_lookup_connect_ref_current_task(io_object_t clientRef);
-
-extern void iokit_retain_port( ipc_port_t port );
-extern void iokit_release_port( ipc_port_t port );
-extern void iokit_release_port_send( ipc_port_t port );
-
-extern void iokit_lock_port(ipc_port_t port);
-extern void iokit_unlock_port(ipc_port_t port);
-
-extern kern_return_t iokit_switch_object_port( ipc_port_t port, io_object_t obj, ipc_kobject_type_t type );
-
-/*
- * Functions imported by iokit:IOMemoryDescriptor.cpp
- */
-
-extern kern_return_t IOMapPages(vm_map_t map, mach_vm_address_t va, mach_vm_address_t pa,
- mach_vm_size_t length, unsigned int mapFlags);
-
-extern kern_return_t IOUnmapPages(vm_map_t map, mach_vm_address_t va, mach_vm_size_t length);
-
-extern kern_return_t IOProtectCacheMode(vm_map_t map, mach_vm_address_t va,
- mach_vm_size_t length, unsigned int options);
-
-extern unsigned int IODefaultCacheBits(addr64_t pa);
-
/*
* Lookup a device by its port.
* Doesn't consume the naked send right; produces a device reference.
*/
-MIGEXTERN io_object_t
-iokit_lookup_object_port(
- ipc_port_t port)
+io_object_t
+iokit_lookup_io_object(ipc_port_t port, ipc_kobject_type_t type)
{
- register io_object_t obj;
+ io_object_t obj;
- if (!IP_VALID(port))
- return (NULL);
+ if (!IP_VALID(port)) {
+ return NULL;
+ }
iokit_lock_port(port);
- if (ip_active(port) && (ip_kotype(port) == IKOT_IOKIT_OBJECT)) {
- obj = (io_object_t) port->ip_kobject;
- iokit_add_reference( obj );
+ if (ip_active(port) && (ip_kotype(port) == type)) {
+ obj = (io_object_t) port->ip_kobject;
+ iokit_add_reference( obj, type );
+ } else {
+ obj = NULL;
}
- else
- obj = NULL;
iokit_unlock_port(port);
- return( obj );
+ return obj;
}
MIGEXTERN io_object_t
-iokit_lookup_connect_port(
- ipc_port_t port)
+iokit_lookup_object_port(
+ ipc_port_t port)
{
- register io_object_t obj;
-
- if (!IP_VALID(port))
- return (NULL);
-
- iokit_lock_port(port);
- if (ip_active(port) && (ip_kotype(port) == IKOT_IOKIT_CONNECT)) {
- obj = (io_object_t) port->ip_kobject;
- iokit_add_connect_reference( obj );
- }
- else
- obj = NULL;
+ return iokit_lookup_io_object(port, IKOT_IOKIT_OBJECT);
+}
- iokit_unlock_port(port);
+MIGEXTERN io_object_t
+iokit_lookup_connect_port(
+ ipc_port_t port)
+{
+ return iokit_lookup_io_object(port, IKOT_IOKIT_CONNECT);
+}
- return( obj );
+MIGEXTERN io_object_t
+iokit_lookup_uext_object_port(
+ ipc_port_t port)
+{
+ return iokit_lookup_io_object(port, IKOT_UEXT_OBJECT);
}
-EXTERN io_object_t
-iokit_lookup_connect_ref(io_object_t connectRef, ipc_space_t space)
+static io_object_t
+iokit_lookup_object_in_space_with_port_name(mach_port_name_t name, ipc_kobject_type_t type, ipc_space_t space)
{
io_object_t obj = NULL;
- if (connectRef && MACH_PORT_VALID(CAST_MACH_PORT_TO_NAME(connectRef))) {
+ if (name && MACH_PORT_VALID(name)) {
ipc_port_t port;
kern_return_t kr;
- kr = ipc_object_translate(space, CAST_MACH_PORT_TO_NAME(connectRef), MACH_PORT_RIGHT_SEND, (ipc_object_t *)&port);
+ kr = ipc_port_translate_send(space, name, &port);
if (kr == KERN_SUCCESS) {
assert(IP_VALID(port));
-
+ require_ip_active(port);
ip_reference(port);
ip_unlock(port);
iokit_lock_port(port);
- if (ip_active(port) && (ip_kotype(port) == IKOT_IOKIT_CONNECT)) {
+ if (ip_kotype(port) == type) {
obj = (io_object_t) port->ip_kobject;
- iokit_add_connect_reference(obj);
+ iokit_add_reference(obj, type);
}
iokit_unlock_port(port);
}
EXTERN io_object_t
-iokit_lookup_connect_ref_current_task(io_object_t connectRef)
+iokit_lookup_object_with_port_name(mach_port_name_t name, ipc_kobject_type_t type, task_t task)
+{
+ return iokit_lookup_object_in_space_with_port_name(name, type, task->itk_space);
+}
+
+EXTERN io_object_t
+iokit_lookup_connect_ref_current_task(mach_port_name_t name)
+{
+ return iokit_lookup_object_in_space_with_port_name(name, IKOT_IOKIT_CONNECT, current_space());
+}
+
+EXTERN io_object_t
+iokit_lookup_uext_ref_current_task(mach_port_name_t name)
{
- return iokit_lookup_connect_ref(connectRef, current_space());
+ return iokit_lookup_object_in_space_with_port_name(name, IKOT_UEXT_OBJECT, current_space());
}
EXTERN void
iokit_retain_port( ipc_port_t port )
{
- ipc_port_reference( port );
+ ipc_port_reference( port );
}
EXTERN void
iokit_release_port( ipc_port_t port )
{
- ipc_port_release( port );
+ ipc_port_release( port );
}
EXTERN void
iokit_release_port_send( ipc_port_t port )
{
- ipc_port_release_send( port );
+ ipc_port_release_send( port );
}
extern lck_mtx_t iokit_obj_to_port_binding_lock;
EXTERN void
iokit_lock_port( __unused ipc_port_t port )
{
- lck_mtx_lock(&iokit_obj_to_port_binding_lock);
+ lck_mtx_lock(&iokit_obj_to_port_binding_lock);
}
EXTERN void
iokit_unlock_port( __unused ipc_port_t port )
{
- lck_mtx_unlock(&iokit_obj_to_port_binding_lock);
+ lck_mtx_unlock(&iokit_obj_to_port_binding_lock);
}
/*
* Get the port for a device.
* Consumes a device reference; produces a naked send right.
*/
-MIGEXTERN ipc_port_t
-iokit_make_object_port(
- io_object_t obj )
+
+static ipc_port_t
+iokit_make_port_of_type(io_object_t obj, ipc_kobject_type_t type)
{
- register ipc_port_t port;
- register ipc_port_t sendPort;
+ ipc_port_t port;
+ ipc_port_t sendPort;
- if( obj == NULL)
- return IP_NULL;
+ if (obj == NULL) {
+ return IP_NULL;
+ }
- port = iokit_port_for_object( obj, IKOT_IOKIT_OBJECT );
- if( port) {
- sendPort = ipc_port_make_send( port);
- iokit_release_port( port );
- } else
- sendPort = IP_NULL;
+ port = iokit_port_for_object( obj, type );
+ if (port) {
+ sendPort = ipc_port_make_send( port);
+ iokit_release_port( port );
+ } else {
+ sendPort = IP_NULL;
+ }
- iokit_remove_reference( obj );
+ iokit_remove_reference( obj );
- return( sendPort);
+ return sendPort;
}
MIGEXTERN ipc_port_t
-iokit_make_connect_port(
- io_object_t obj )
+iokit_make_object_port(
+ io_object_t obj )
{
- register ipc_port_t port;
- register ipc_port_t sendPort;
-
- if( obj == NULL)
- return IP_NULL;
-
- port = iokit_port_for_object( obj, IKOT_IOKIT_CONNECT );
- if( port) {
- sendPort = ipc_port_make_send( port);
- iokit_release_port( port );
- } else
- sendPort = IP_NULL;
-
- iokit_remove_reference( obj );
+ return iokit_make_port_of_type(obj, IKOT_IOKIT_OBJECT);
+}
- return( sendPort);
+MIGEXTERN ipc_port_t
+iokit_make_connect_port(
+ io_object_t obj )
+{
+ return iokit_make_port_of_type(obj, IKOT_IOKIT_CONNECT);
}
int gIOKitPortCount;
EXTERN ipc_port_t
iokit_alloc_object_port( io_object_t obj, ipc_kobject_type_t type )
{
- ipc_port_t notify;
- ipc_port_t port;
-
- do {
-
/* Allocate port, keeping a reference for it. */
- port = ipc_port_alloc_kernel();
- if( port == IP_NULL)
- continue;
-
- /* set kobject & type */
-// iokit_add_reference( obj );
- ipc_kobject_set( port, (ipc_kobject_t) obj, type);
-
- /* Request no-senders notifications on the port. */
- ip_lock( port);
- notify = ipc_port_make_sonce_locked( port);
- ipc_port_nsrequest( port, 1, notify, ¬ify);
- /* port unlocked */
- assert( notify == IP_NULL);
gIOKitPortCount++;
-
- } while( FALSE);
-
- return( port );
+ ipc_kobject_alloc_options_t options = IPC_KOBJECT_ALLOC_NSREQUEST;
+ if (type == IKOT_IOKIT_CONNECT) {
+ options |= IPC_KOBJECT_ALLOC_IMMOVABLE_SEND;
+ }
+ return ipc_kobject_alloc_port((ipc_kobject_t) obj, type, options);
}
-
EXTERN kern_return_t
iokit_destroy_object_port( ipc_port_t port )
{
-
- iokit_lock_port(port);
- ipc_kobject_set( port, IKO_NULL, IKOT_NONE);
+ iokit_lock_port(port);
+ ipc_kobject_set( port, IKO_NULL, IKOT_NONE);
// iokit_remove_reference( obj );
- iokit_unlock_port(port);
- ipc_port_dealloc_kernel( port);
- gIOKitPortCount--;
+ iokit_unlock_port(port);
+ ipc_port_dealloc_kernel( port);
+ gIOKitPortCount--;
- return( KERN_SUCCESS);
+ return KERN_SUCCESS;
}
EXTERN kern_return_t
iokit_switch_object_port( ipc_port_t port, io_object_t obj, ipc_kobject_type_t type )
{
- iokit_lock_port(port);
- ipc_kobject_set( port, (ipc_kobject_t) obj, type);
- iokit_unlock_port(port);
+ iokit_lock_port(port);
+ ipc_kobject_set( port, (ipc_kobject_t) obj, type);
+ iokit_unlock_port(port);
- return( KERN_SUCCESS);
+ return KERN_SUCCESS;
}
EXTERN mach_port_name_t
iokit_make_send_right( task_t task, io_object_t obj, ipc_kobject_type_t type )
{
- ipc_port_t port;
- ipc_port_t sendPort;
- mach_port_name_t name = 0;
-
- if( obj == NULL)
- return MACH_PORT_NULL;
-
- port = iokit_port_for_object( obj, type );
- if( port) {
- sendPort = ipc_port_make_send( port);
- iokit_release_port( port );
- } else
- sendPort = IP_NULL;
-
- if (IP_VALID( sendPort )) {
- kern_return_t kr;
- kr = ipc_object_copyout( task->itk_space, (ipc_object_t) sendPort,
- MACH_MSG_TYPE_PORT_SEND, TRUE, &name);
- if ( kr != KERN_SUCCESS) {
- ipc_port_release_send( sendPort );
- name = MACH_PORT_NULL;
+ ipc_port_t port;
+ ipc_port_t sendPort;
+ mach_port_name_t name = 0;
+
+ if (obj == NULL) {
+ return MACH_PORT_NULL;
}
- } else if ( sendPort == IP_NULL)
- name = MACH_PORT_NULL;
- else if ( sendPort == IP_DEAD)
- name = MACH_PORT_DEAD;
- iokit_remove_reference( obj );
+ port = iokit_port_for_object( obj, type );
+ if (port) {
+ sendPort = ipc_port_make_send( port);
+ iokit_release_port( port );
+ } else {
+ sendPort = IP_NULL;
+ }
+
+ if (IP_VALID( sendPort )) {
+ kern_return_t kr;
+ // Remove once <rdar://problem/45522961> is fixed.
+ // We need to make ith_knote NULL as ipc_object_copyout() uses
+ // thread-argument-passing and its value should not be garbage
+ current_thread()->ith_knote = ITH_KNOTE_NULL;
+ kr = ipc_object_copyout( task->itk_space, ip_to_object(sendPort),
+ MACH_MSG_TYPE_PORT_SEND, NULL, NULL, &name);
+ if (kr != KERN_SUCCESS) {
+ ipc_port_release_send( sendPort );
+ name = MACH_PORT_NULL;
+ }
+ } else if (sendPort == IP_NULL) {
+ name = MACH_PORT_NULL;
+ } else if (sendPort == IP_DEAD) {
+ name = MACH_PORT_DEAD;
+ }
- return( name );
+ return name;
}
EXTERN kern_return_t
iokit_mod_send_right( task_t task, mach_port_name_t name, mach_port_delta_t delta )
{
- return (mach_port_mod_refs( task->itk_space, name, MACH_PORT_RIGHT_SEND, delta ));
+ return mach_port_mod_refs( task->itk_space, name, MACH_PORT_RIGHT_SEND, delta );
}
/*
* Handle the No-More_Senders notification generated from a device port destroy.
* Since there are no longer any tasks which hold a send right to this device
- * port a NMS notification has been generated.
+ * port a NMS notification has been generated.
*/
static void
iokit_no_senders( mach_no_senders_notification_t * notification )
{
- ipc_port_t port;
- io_object_t obj = NULL;
- ipc_kobject_type_t type = IKOT_NONE;
- ipc_port_t notify;
-
- port = (ipc_port_t) notification->not_header.msgh_remote_port;
-
- // convert a port to io_object_t.
- if( IP_VALID(port)) {
- iokit_lock_port(port);
- if( ip_active(port)) {
- obj = (io_object_t) port->ip_kobject;
- type = ip_kotype( port );
- if( (IKOT_IOKIT_OBJECT == type)
- || (IKOT_IOKIT_CONNECT == type))
- iokit_add_reference( obj );
- else
- obj = NULL;
- }
- iokit_unlock_port(port);
-
- if( obj ) {
+ ipc_port_t port;
+ io_object_t obj = NULL;
+ ipc_kobject_type_t type = IKOT_NONE;
+ ipc_port_t notify;
- mach_port_mscount_t mscount = notification->not_count;
+ port = notification->not_header.msgh_remote_port;
- if( KERN_SUCCESS != iokit_client_died( obj, port, type, &mscount ))
- {
- /* Re-request no-senders notifications on the port (if still active) */
- ip_lock(port);
+ // convert a port to io_object_t.
+ if (IP_VALID(port)) {
+ iokit_lock_port(port);
if (ip_active(port)) {
- notify = ipc_port_make_sonce_locked(port);
- ipc_port_nsrequest( port, mscount + 1, notify, ¬ify);
- /* port unlocked */
- if ( notify != IP_NULL)
- ipc_port_release_sonce(notify);
- } else {
- ip_unlock(port);
+ obj = (io_object_t) port->ip_kobject;
+ type = ip_kotype( port );
+ if ((IKOT_IOKIT_OBJECT == type)
+ || (IKOT_IOKIT_CONNECT == type)
+ || (IKOT_IOKIT_IDENT == type)
+ || (IKOT_UEXT_OBJECT == type)) {
+ iokit_add_reference( obj, IKOT_IOKIT_OBJECT );
+ } else {
+ obj = NULL;
+ }
}
- }
- iokit_remove_reference( obj );
- }
- }
+ iokit_unlock_port(port);
+
+ if (obj) {
+ mach_port_mscount_t mscount = notification->not_count;
+
+ if (KERN_SUCCESS != iokit_client_died( obj, port, type, &mscount )) {
+ /* Re-request no-senders notifications on the port (if still active) */
+ ip_lock(port);
+ if (ip_active(port)) {
+ notify = ipc_port_make_sonce_locked(port);
+ ipc_port_nsrequest( port, mscount + 1, notify, ¬ify);
+ /* port unlocked */
+ if (notify != IP_NULL) {
+ ipc_port_release_sonce(notify);
+ }
+ } else {
+ ip_unlock(port);
+ }
+ }
+ iokit_remove_reference( obj );
+ }
+ }
}
boolean_t
iokit_notify( mach_msg_header_t * msg )
{
- switch (msg->msgh_id) {
- case MACH_NOTIFY_NO_SENDERS:
- iokit_no_senders((mach_no_senders_notification_t *) msg);
- return TRUE;
-
- case MACH_NOTIFY_PORT_DELETED:
- case MACH_NOTIFY_PORT_DESTROYED:
- case MACH_NOTIFY_SEND_ONCE:
- case MACH_NOTIFY_DEAD_NAME:
- default:
- printf("iokit_notify: strange notification %d\n", msg->msgh_id);
- return FALSE;
- }
+ switch (msg->msgh_id) {
+ case MACH_NOTIFY_NO_SENDERS:
+ iokit_no_senders((mach_no_senders_notification_t *) msg);
+ return TRUE;
+
+ case MACH_NOTIFY_PORT_DELETED:
+ case MACH_NOTIFY_PORT_DESTROYED:
+ case MACH_NOTIFY_SEND_ONCE:
+ case MACH_NOTIFY_DEAD_NAME:
+ default:
+ printf("iokit_notify: strange notification %d\n", msg->msgh_id);
+ return FALSE;
+ }
}
/* need to create a pmap function to generalize */
-unsigned int IODefaultCacheBits(addr64_t pa)
+unsigned int
+IODefaultCacheBits(addr64_t pa)
{
- return(pmap_cache_attributes((ppnum_t)(pa >> PAGE_SHIFT)));
+ return pmap_cache_attributes((ppnum_t)(pa >> PAGE_SHIFT));
}
-kern_return_t IOMapPages(vm_map_t map, mach_vm_address_t va, mach_vm_address_t pa,
- mach_vm_size_t length, unsigned int options)
+kern_return_t
+IOMapPages(vm_map_t map, mach_vm_address_t va, mach_vm_address_t pa,
+ mach_vm_size_t length, unsigned int options)
{
- vm_prot_t prot;
- unsigned int flags;
- ppnum_t pagenum;
- pmap_t pmap = map->pmap;
-
- prot = (options & kIOMapReadOnly)
- ? VM_PROT_READ : (VM_PROT_READ|VM_PROT_WRITE);
+ vm_prot_t prot;
+ unsigned int flags;
+ ppnum_t pagenum;
+ pmap_t pmap = map->pmap;
- pagenum = (ppnum_t)atop_64(pa);
+ prot = (options & kIOMapReadOnly)
+ ? VM_PROT_READ : (VM_PROT_READ | VM_PROT_WRITE);
- switch(options & kIOMapCacheMask ) { /* What cache mode do we need? */
+ pagenum = (ppnum_t)atop_64(pa);
+ switch (options & kIOMapCacheMask) { /* What cache mode do we need? */
case kIOMapDefaultCache:
default:
- flags = IODefaultCacheBits(pa);
- break;
+ flags = IODefaultCacheBits(pa);
+ break;
case kIOMapInhibitCache:
- flags = VM_WIMG_IO;
- break;
+ flags = VM_WIMG_IO;
+ break;
case kIOMapWriteThruCache:
- flags = VM_WIMG_WTHRU;
- break;
+ flags = VM_WIMG_WTHRU;
+ break;
case kIOMapWriteCombineCache:
- flags = VM_WIMG_WCOMB;
- break;
+ flags = VM_WIMG_WCOMB;
+ break;
case kIOMapCopybackCache:
- flags = VM_WIMG_COPYBACK;
- break;
+ flags = VM_WIMG_COPYBACK;
+ break;
+
case kIOMapCopybackInnerCache:
- flags = VM_WIMG_INNERWBACK;
- break;
- }
+ flags = VM_WIMG_INNERWBACK;
+ break;
- pmap_set_cache_attributes(pagenum, flags);
+ case kIOMapPostedWrite:
+ flags = VM_WIMG_POSTED;
+ break;
- vm_map_set_cache_attr(map, (vm_map_offset_t)va);
+ case kIOMapRealTimeCache:
+ flags = VM_WIMG_RT;
+ break;
+ }
+
+ pmap_set_cache_attributes(pagenum, flags);
+ vm_map_set_cache_attr(map, (vm_map_offset_t)va);
- // Set up a block mapped area
- pmap_map_block(pmap, va, pagenum, (uint32_t) atop_64(round_page_64(length)), prot, 0, 0);
- return( KERN_SUCCESS );
+ // Set up a block mapped area
+ return pmap_map_block(pmap, va, pagenum, (uint32_t) atop_64(round_page_64(length)), prot, 0, 0);
}
-kern_return_t IOUnmapPages(vm_map_t map, mach_vm_address_t va, mach_vm_size_t length)
+kern_return_t
+IOUnmapPages(vm_map_t map, mach_vm_address_t va, mach_vm_size_t length)
{
- pmap_t pmap = map->pmap;
+ pmap_t pmap = map->pmap;
- pmap_remove(pmap, trunc_page_64(va), round_page_64(va + length));
+ pmap_remove(pmap, trunc_page_64(va), round_page_64(va + length));
- return( KERN_SUCCESS );
+ return KERN_SUCCESS;
}
-kern_return_t IOProtectCacheMode(vm_map_t __unused map, mach_vm_address_t __unused va,
- mach_vm_size_t __unused length, unsigned int __unused options)
+kern_return_t
+IOProtectCacheMode(vm_map_t __unused map, mach_vm_address_t __unused va,
+ mach_vm_size_t __unused length, unsigned int __unused options)
{
- mach_vm_size_t off;
- vm_prot_t prot;
- unsigned int flags;
- pmap_t pmap = map->pmap;
- pmap_flush_context pmap_flush_context_storage;
- boolean_t delayed_pmap_flush = FALSE;
-
- prot = (options & kIOMapReadOnly)
- ? VM_PROT_READ : (VM_PROT_READ|VM_PROT_WRITE);
-
- switch (options & kIOMapCacheMask)
- {
+ mach_vm_size_t off;
+ vm_prot_t prot;
+ unsigned int flags;
+ pmap_t pmap = map->pmap;
+ pmap_flush_context pmap_flush_context_storage;
+ boolean_t delayed_pmap_flush = FALSE;
+
+ prot = (options & kIOMapReadOnly)
+ ? VM_PROT_READ : (VM_PROT_READ | VM_PROT_WRITE);
+
+ switch (options & kIOMapCacheMask) {
// what cache mode do we need?
case kIOMapDefaultCache:
default:
- return (KERN_INVALID_ARGUMENT);
+ return KERN_INVALID_ARGUMENT;
case kIOMapInhibitCache:
- flags = VM_WIMG_IO;
- break;
+ flags = VM_WIMG_IO;
+ break;
case kIOMapWriteThruCache:
- flags = VM_WIMG_WTHRU;
- break;
+ flags = VM_WIMG_WTHRU;
+ break;
case kIOMapWriteCombineCache:
- flags = VM_WIMG_WCOMB;
- break;
+ flags = VM_WIMG_WCOMB;
+ break;
case kIOMapCopybackCache:
- flags = VM_WIMG_COPYBACK;
- break;
- }
-
- pmap_flush_context_init(&pmap_flush_context_storage);
- delayed_pmap_flush = FALSE;
-
- // enter each page's physical address in the target map
- for (off = 0; off < length; off += page_size)
- {
- ppnum_t ppnum = pmap_find_phys(pmap, va + off);
- if (ppnum) {
- pmap_enter_options(pmap, va + off, ppnum, prot, VM_PROT_NONE, flags, TRUE,
- PMAP_OPTIONS_NOFLUSH, (void *)&pmap_flush_context_storage);
- delayed_pmap_flush = TRUE;
+ flags = VM_WIMG_COPYBACK;
+ break;
+
+ case kIOMapCopybackInnerCache:
+ flags = VM_WIMG_INNERWBACK;
+ break;
+
+ case kIOMapPostedWrite:
+ flags = VM_WIMG_POSTED;
+ break;
+
+ case kIOMapRealTimeCache:
+ flags = VM_WIMG_RT;
+ break;
}
- }
- if (delayed_pmap_flush == TRUE)
- pmap_flush(&pmap_flush_context_storage);
- return (KERN_SUCCESS);
+ pmap_flush_context_init(&pmap_flush_context_storage);
+ delayed_pmap_flush = FALSE;
+
+ // enter each page's physical address in the target map
+ for (off = 0; off < length; off += page_size) {
+ ppnum_t ppnum = pmap_find_phys(pmap, va + off);
+ if (ppnum) {
+ pmap_enter_options(pmap, va + off, ppnum, prot, VM_PROT_NONE, flags, TRUE,
+ PMAP_OPTIONS_NOFLUSH, (void *)&pmap_flush_context_storage);
+ delayed_pmap_flush = TRUE;
+ }
+ }
+ if (delayed_pmap_flush == TRUE) {
+ pmap_flush(&pmap_flush_context_storage);
+ }
+
+ return KERN_SUCCESS;
}
-ppnum_t IOGetLastPageNumber(void)
+ppnum_t
+IOGetLastPageNumber(void)
{
#if __i386__ || __x86_64__
- ppnum_t lastPage, highest = 0;
+ ppnum_t lastPage, highest = 0;
unsigned int idx;
- for (idx = 0; idx < pmap_memory_region_count; idx++)
- {
+ for (idx = 0; idx < pmap_memory_region_count; idx++) {
lastPage = pmap_memory_regions[idx].end - 1;
- if (lastPage > highest)
+ if (lastPage > highest) {
highest = lastPage;
+ }
}
- return (highest);
+ return highest;
+#elif __arm__ || __arm64__
+ return 0;
#else
#error unknown arch
#endif
void IOGetTime( mach_timespec_t * clock_time);
-void IOGetTime( mach_timespec_t * clock_time)
+void
+IOGetTime( mach_timespec_t * clock_time)
{
clock_sec_t sec;
clock_nsec_t nsec;
clock_time->tv_sec = (typeof(clock_time->tv_sec))sec;
clock_time->tv_nsec = nsec;
}
-
projects / apple / xnu.git / blobdiff