X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/de355530ae67247cbd0da700edb3a2a1dae884c2..4a3eedf9ecc9bbe3f3a5c6ce5e53ad199d639d32:/osfmk/ppc/io_map.c?ds=sidebyside

diff --git a/osfmk/ppc/io_map.c b/osfmk/ppc/io_map.c
index 5ce5ab5e8..25607c1cc 100644
--- 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.
  *
- * @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,
- * 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@
@@ -42,54 +48,84 @@ extern vm_offset_t	virtual_avail;
  * outside the usual physical memory. If phys_addr is NULL then
  * steal the appropriate number of physical pages from the vm
  * system and map them.
+ *
+ * Note, this will onl
  */
 vm_offset_t
-io_map(phys_addr, size)
-	vm_offset_t	phys_addr;
-	vm_size_t	size;
+io_map(vm_offset_t phys_addr, vm_size_t size, unsigned int flags)
 {
 	vm_offset_t	start;
-	int		i;
-	unsigned int j;
+	vm_size_t	i;
+	unsigned int    mflags;
 	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 */
 #endif
 
-	if (phys_addr != 0) {
-		/* make sure we map full contents of all the pages concerned */
-		size = round_page(size + (phys_addr & PAGE_MASK));
+	if (phys_addr != 0) {						/* If they supplied a physical address, use it */
 
-		/* Steal some free virtual addresses */
+		size = round_page(size + (phys_addr & PAGE_MASK));	/* Make sure we map all of it */
 
-		(void) kmem_alloc_pageable(kernel_map, &start, size);
+		(void) kmem_alloc_pageable(kernel_map, &start, size);	/* Get some virtual addresses to use */
 		
-		pmap_map_block(kernel_pmap, start, phys_addr, size, 
-		   VM_PROT_READ|VM_PROT_WRITE, PTE_WIMG_IO, 0);	/* Set up a block mapped area */
+		(void)mapping_make(kernel_pmap, (addr64_t)start, (ppnum_t)(phys_addr >> 12), 
+			mflags,					/* Map with requested cache mode */
+			(size >> 12), VM_PROT_READ|VM_PROT_WRITE);
 
-		return (start + (phys_addr & PAGE_MASK));
+		return (start + (phys_addr & PAGE_MASK));	/* Pass back the physical address */
 	
 	} else {
 	
-		/* Steal some free virtual addresses */
-		(void) kmem_alloc_pageable(kernel_map, &start, size);
+		(void) kmem_alloc_pageable(kernel_map, &start, size);	/* Get some virtual addresses */
 
 		mapping_prealloc(size);					/* Make sure there are enough free mappings */
-		/* Steal some physical pages and map them one by one */
+
 		for (i = 0; i < size ; i += PAGE_SIZE) {
 			m = VM_PAGE_NULL;
-			while ((m = vm_page_grab()) == VM_PAGE_NULL)
-				VM_PAGE_WAIT();
+			while ((m = vm_page_grab()) == VM_PAGE_NULL) {	/* Get a physical page */
+				VM_PAGE_WAIT();					/* Wait if we didn't have one */
+			}
 			vm_page_gobble(m);
-			(void) pmap_map_bd(start + i,
-					   m->phys_addr,
-					   m->phys_addr + PAGE_SIZE,
-					   VM_PROT_READ|VM_PROT_WRITE);
+			
+			(void)mapping_make(kernel_pmap, 
+				(addr64_t)(start + i), m->phys_page, 
+				mflags,					/* Map with requested cache mode */
+				1, VM_PROT_READ|VM_PROT_WRITE);	
+			
 		}
 
 		mapping_relpre();						/* Allow mapping release */
 		return start;
 	}
 }
+
+
+/*
+ * 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, unsigned int flags)
+{
+	vm_offset_t	start;
+	unsigned int    mflags;
+
+	if(kernel_map != VM_MAP_NULL) {				/* If VM system is up, redirect to normal routine */
+		
+		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), 
+		mflags,					/* Map with requested cache mode */
+		(size >> 12), VM_PROT_READ|VM_PROT_WRITE);
+
+	return (start + (phys_addr & PAGE_MASK));
+}