xnu-1504.15.3.tar.gz

[apple/xnu.git] / osfmk / ppc / io_map.c

diff --git a/osfmk/ppc/io_map.c b/osfmk/ppc/io_map.c
index 3c47658ec6788641b15ef948e6536d294e8d7938..e30d357ce5dc5e1f71dc1c41054e5c9fc1c632e8 100644 (file)
--- a/osfmk/ppc/io_map.c
+++ b/osfmk/ppc/io_map.c
@@ -1,23 +1,29 @@
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *
 /*
  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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 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.

  * 
  * 

- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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,
  * 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@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 /*
  * @OSF_COPYRIGHT@
  */
 /*
  * @OSF_COPYRIGHT@


@@ -46,15 +52,14 @@ extern vm_offset_t  virtual_avail;
  * Note, this will onl
  */
 vm_offset_t
  * Note, this will onl
  */
 vm_offset_t

-io_map(phys_addr, size)
-       vm_offset_t     phys_addr;
-       vm_size_t       size;
+io_map(vm_map_offset_t phys_addr, vm_size_t size, unsigned int flags)

 {
        vm_offset_t     start;
 {
        vm_offset_t     start;

-       int             i;
-       unsigned int j;
+       vm_size_t       i;
+       unsigned int    mflags;

        vm_page_t       m;
 
        vm_page_t       m;
 

+       mflags = mmFlgBlock | mmFlgUseAttr | (flags & VM_MEM_GUARDED) | ((flags & VM_MEM_NOT_CACHEABLE) >> 1);  /* Convert to our mapping_make flags */

 
 #if DEBUG
        assert (kernel_map != VM_MAP_NULL);                     /* VM must be initialised */
 
 #if DEBUG
        assert (kernel_map != VM_MAP_NULL);                     /* VM must be initialised */


@@ -67,10 +72,10 @@ io_map(phys_addr, size)
                (void) kmem_alloc_pageable(kernel_map, &start, size);   /* Get some virtual addresses to use */
                
                (void)mapping_make(kernel_pmap, (addr64_t)start, (ppnum_t)(phys_addr >> 12), 
                (void) kmem_alloc_pageable(kernel_map, &start, size);   /* Get some virtual addresses to use */
                
                (void)mapping_make(kernel_pmap, (addr64_t)start, (ppnum_t)(phys_addr >> 12), 

-                       (mmFlgBlock | mmFlgUseAttr | mmFlgCInhib | mmFlgGuarded),       /* Map as I/O page */
+                       mflags,                                 /* Map with requested cache mode */

                        (size >> 12), VM_PROT_READ|VM_PROT_WRITE);
 
                        (size >> 12), VM_PROT_READ|VM_PROT_WRITE);
 

-               return (start + (phys_addr & PAGE_MASK));       /* Pass back the physical address */
+               return (start + (phys_addr & PAGE_MASK));       /* Pass back the virtual address */

        
        } else {
        
        
        } else {
        


@@ -87,7 +92,7 @@ io_map(phys_addr, size)
                        
                        (void)mapping_make(kernel_pmap, 
                                (addr64_t)(start + i), m->phys_page, 
                        
                        (void)mapping_make(kernel_pmap, 
                                (addr64_t)(start + i), m->phys_page, 

-                               (mmFlgBlock | mmFlgUseAttr | mmFlgCInhib | mmFlgGuarded),       /* Map as I/O page */
+                               mflags,                                 /* Map with requested cache mode */

                                1, VM_PROT_READ|VM_PROT_WRITE); 
                        
                }
                                1, VM_PROT_READ|VM_PROT_WRITE); 
                        
                }


@@ -102,21 +107,24 @@ io_map(phys_addr, size)
  * Allocate and map memory for devices before the VM system comes alive.
  */
 
  * Allocate and map memory for devices before the VM system comes alive.
  */
 

-vm_offset_t io_map_spec(vm_offset_t phys_addr, vm_size_t size)
+vm_offset_t io_map_spec(vm_map_offset_t phys_addr, vm_size_t size, unsigned int flags)

 {
        vm_offset_t     start;
 {
        vm_offset_t     start;

+       unsigned int    mflags;

 
        if(kernel_map != VM_MAP_NULL) {                         /* If VM system is up, redirect to normal routine */
                
 
        if(kernel_map != VM_MAP_NULL) {                         /* If VM system is up, redirect to normal routine */
                

-               return io_map(phys_addr, size);                 /* Map the address */
+               return io_map(phys_addr, size, flags);                  /* Map the address */

        
        }
        
        }

+
+       mflags = mmFlgBlock | mmFlgUseAttr | (flags & VM_MEM_GUARDED) | ((flags & VM_MEM_NOT_CACHEABLE) >> 1);  /* Convert to our mapping_make flags */

        
        size = round_page(size + (phys_addr - (phys_addr & -PAGE_SIZE)));       /* Extend the length to include it all */
        start = pmap_boot_map(size);                            /* Get me some virtual address */
 
        (void)mapping_make(kernel_pmap, (addr64_t)start, (ppnum_t)(phys_addr >> 12), 
        
        size = round_page(size + (phys_addr - (phys_addr & -PAGE_SIZE)));       /* Extend the length to include it all */
        start = pmap_boot_map(size);                            /* Get me some virtual address */
 
        (void)mapping_make(kernel_pmap, (addr64_t)start, (ppnum_t)(phys_addr >> 12), 

-               (mmFlgBlock | mmFlgUseAttr | mmFlgCInhib | mmFlgGuarded),       /* Map as I/O page */
+               mflags,                                 /* Map with requested cache mode */

                (size >> 12), VM_PROT_READ|VM_PROT_WRITE);
 
        return (start + (phys_addr & PAGE_MASK));
                (size >> 12), VM_PROT_READ|VM_PROT_WRITE);
 
        return (start + (phys_addr & PAGE_MASK));