xnu-792.13.8.tar.gz

[apple/xnu.git] / osfmk / vm / device_vm.c

diff --git a/osfmk/vm/device_vm.c b/osfmk/vm/device_vm.c
index 46422003418c55d898720d8dcb5cad8461dc19ab..8a72765c0462c7def9f297750dafc8522067c2c0 100644 (file)
--- a/osfmk/vm/device_vm.c
+++ b/osfmk/vm/device_vm.c
@@ -1,23 +1,31 @@
 /*
  * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
  *
- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_LICENSE_OSREFERENCE_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
- * 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@
+ * 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
+ * Please see the License for the specific language governing rights and 
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  */
 
 #include <sys/errno.h>
@@ -57,12 +65,27 @@
 
 
 /* until component support available */
-int    device_pager_workaround;
+const struct memory_object_pager_ops device_pager_ops = {
+       device_pager_reference,
+       device_pager_deallocate,
+       device_pager_init,
+       device_pager_terminate,
+       device_pager_data_request,
+       device_pager_data_return,
+       device_pager_data_initialize,
+       device_pager_data_unlock,
+       device_pager_synchronize,
+       device_pager_unmap,
+       "device pager"
+};
 
 typedef int device_port_t;
 
+/*
+ * The start of "struct device_pager" MUST match a "struct memory_object".
+ */
 typedef struct device_pager {
-       int             *pager;         /* pager workaround pointer     */
+       memory_object_pager_ops_t pager_ops; /* == &device_pager_ops    */
        unsigned int    pager_ikot;     /* fake ip_kotype()             */
        unsigned int    ref_count;      /* reference count              */
        memory_object_control_t control_handle; /* mem object's cntrl handle */
@@ -161,7 +184,7 @@ device_pager_populate_object(
                return kr;
 
        if(!vm_object->phys_contiguous) {
-               int null_size = 0;
+               unsigned int null_size = 0;
                kr = vm_object_upl_request(vm_object,
                        (vm_object_offset_t)offset, size, &upl,  NULL,
                        &null_size, (UPL_NO_SYNC | UPL_CLEAN_IN_PLACE)); 
@@ -187,7 +210,7 @@ device_pager_lookup(
        device_pager_t  device_object;
 
        device_object = (device_pager_t)name;
-       assert(device_object->pager == &device_pager_workaround);
+       assert(device_object->pager_ops == &device_pager_ops);
        return (device_object);
 }
 
@@ -254,9 +277,11 @@ device_pager_init(
 /*ARGSUSED6*/
 kern_return_t
 device_pager_data_return(
-       memory_object_t         mem_obj,
-       memory_object_offset_t  offset,
-       vm_size_t               data_cnt,
+       memory_object_t                 mem_obj,
+       memory_object_offset_t          offset,
+       vm_size_t                       data_cnt,
+       __unused memory_object_offset_t *resid_offset,
+       __unused int                    *io_error,
        __unused boolean_t              dirty,
        __unused boolean_t              kernel_copy,
        __unused int                    upl_flags)  
@@ -336,7 +361,7 @@ device_pager_deallocate(
                         * We still have to release the "memory object control"
                         * handle.
                         */
-                       assert(device_control->object == VM_OBJECT_NULL);
+                       assert(device_control->moc_object == VM_OBJECT_NULL);
                        memory_object_control_deallocate(device_control);
                        device_object->control_handle =
                                MEMORY_OBJECT_CONTROL_NULL;
@@ -419,7 +444,7 @@ device_object_create()
        device_object = (struct device_pager *) zalloc(device_pager_zone);
        if (device_object == DEVICE_PAGER_NULL)
                return(DEVICE_PAGER_NULL);
-       device_object->pager = &device_pager_workaround;
+       device_object->pager_ops = &device_pager_ops;
        device_object->pager_ikot = IKOT_MEMORY_OBJECT;
        device_object->ref_count = 1;
        device_object->control_handle = MEMORY_OBJECT_CONTROL_NULL;