xnu-792.6.56.tar.gz

[apple/xnu.git] / osfmk / mach / i386 / vm_param.h

diff --git a/osfmk/mach/i386/vm_param.h b/osfmk/mach/i386/vm_param.h
index f5b0c053669a6f2d54bca7e020e12c7beb2b9174..772f3ef5dda21f4bd5a3421310d0f562e75654e7 100644 (file)
--- a/osfmk/mach/i386/vm_param.h
+++ b/osfmk/mach/i386/vm_param.h
@@ -1,21 +1,22 @@
 /*
 /*

- * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.

  *
  * @APPLE_LICENSE_HEADER_START@
  * 
  *
  * @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 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. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ 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
+ * 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_LICENSE_HEADER_END@
  */


@@ -84,19 +85,23 @@
 #ifndef        _MACH_I386_VM_PARAM_H_
 #define _MACH_I386_VM_PARAM_H_
 
 #ifndef        _MACH_I386_VM_PARAM_H_
 #define _MACH_I386_VM_PARAM_H_
 

-#define BYTE_SIZE      8       /* byte size in bits */
+#define BYTE_SIZE              8               /* byte size in bits */

 
 #define I386_PGBYTES   4096    /* bytes per 80386 page */
 
 #define I386_PGBYTES   4096    /* bytes per 80386 page */

-#define I386_PGSHIFT   12      /* number of bits to shift for pages */
+#define I386_PGSHIFT   12              /* number of bits to shift for pages */
+
+#define        PAGE_SIZE               I386_PGBYTES
+#define        PAGE_SHIFT              I386_PGSHIFT
+#define        PAGE_MASK               (PAGE_SIZE - 1)

 
 /*
  *     Convert bytes to pages and convert pages to bytes.
  *     No rounding is used.
  */
 
 
 /*
  *     Convert bytes to pages and convert pages to bytes.
  *     No rounding is used.
  */
 

-#define i386_btop(x)           (((unsigned)(x)) >> I386_PGSHIFT)
+#define i386_btop(x)           (((pmap_paddr_t)(x)) >> I386_PGSHIFT)

 #define machine_btop(x)                i386_btop(x)
 #define machine_btop(x)                i386_btop(x)

-#define i386_ptob(x)           (((unsigned)(x)) << I386_PGSHIFT)
+#define i386_ptob(x)           (((pmap_paddr_t)(x)) << I386_PGSHIFT)

 
 /*
  *     Round off or truncate to the nearest page.  These will work
 
 /*
  *     Round off or truncate to the nearest page.  These will work


@@ -104,48 +109,41 @@
  *     bytes.
  */
 
  *     bytes.
  */
 

-#define i386_round_page(x)     ((((unsigned)(x)) + I386_PGBYTES - 1) & \
+#define i386_round_page(x)     ((((pmap_paddr_t)(x)) + I386_PGBYTES - 1) & \

                                        ~(I386_PGBYTES-1))
                                        ~(I386_PGBYTES-1))

-#define i386_trunc_page(x)     (((unsigned)(x)) & ~(I386_PGBYTES-1))
+#define i386_trunc_page(x)     (((pmap_paddr_t)(x)) & ~(I386_PGBYTES-1))

 
 

-#define VM_MIN_ADDRESS         ((vm_offset_t) 0)
-#define VM_MAX_ADDRESS         ((vm_offset_t) 0xc0000000U)
+#define VM_MAX_PAGE_ADDRESS     0x00000000C0000000ULL

 
 

-#define LINEAR_KERNEL_ADDRESS  ((vm_offset_t) 0xc0000000)
+/* system-wide values */
+#define MACH_VM_MIN_ADDRESS            ((mach_vm_offset_t) 0)
+#define MACH_VM_MAX_ADDRESS            ((mach_vm_offset_t) VM_MAX_PAGE_ADDRESS)
+
+/* process-relative values (all 32-bit legacy only for now) */
+#define VM_MIN_ADDRESS         ((vm_offset_t) 0)
+#define VM_MAX_ADDRESS         ((vm_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF))

 
 

-#define VM_MIN_KERNEL_ADDRESS  ((vm_offset_t) 0x00000000U)
-#define VM_MAX_KERNEL_ADDRESS  ((vm_offset_t) 0x3fffffffU)
+#ifdef KERNEL_PRIVATE 

 
 

-#define VM_MIN_KERNEL_LOADED_ADDRESS   ((vm_offset_t) 0x0c000000U)
-#define VM_MAX_KERNEL_LOADED_ADDRESS   ((vm_offset_t) 0x1fffffffU)
+/* Kernel-wide values */
+#define VM_MIN_KERNEL_ADDRESS  ((vm_offset_t) 0xC0000000U)
+#define VM_MAX_KERNEL_ADDRESS  ((vm_offset_t) 0xFfffffffU)
+#define KERNEL_STACK_SIZE              (I386_PGBYTES*4)

 
 /* FIXME  - always leave like this? */
 #define        INTSTACK_SIZE   (I386_PGBYTES*4)
 
 /* FIXME  - always leave like this? */
 #define        INTSTACK_SIZE   (I386_PGBYTES*4)

-#define        KERNEL_STACK_SIZE       (I386_PGBYTES*4)
-
-#if 0          /* FIXME */
-
-#include <norma_vm.h>
-#include <task_swapper.h>
-#include <thread_swapper.h>
-
-#if defined(AT386)
-#include <i386/cpuid.h>
-#endif
-
-#if !NORMA_VM 
-#if !TASK_SWAPPER && !THREAD_SWAPPER
-#define KERNEL_STACK_SIZE      (I386_PGBYTES/2)
-#else
-/* stack needs to be a multiple of page size to get unwired  when swapped */
-#define KERNEL_STACK_SIZE      (I386_PGBYTES)
-#endif /* TASK || THREAD SWAPPER */
-#define INTSTACK_SIZE          (I386_PGBYTES)  /* interrupt stack size */
-#else  /* NORMA_VM */
-#define KERNEL_STACK_SIZE      (I386_PGBYTES*2)
-#define INTSTACK_SIZE          (I386_PGBYTES*2)        /* interrupt stack size */
-#endif /* NORMA_VM */
-#endif /* MACH_KERNEL */
+
+#ifdef MACH_KERNEL_PRIVATE
+
+/* For implementing legacy 32-bit interfaces */
+#define VM32_SUPPORT
+#define VM32_MIN_ADDRESS               ((vm32_offset_t) 0)
+#define VM32_MAX_ADDRESS               ((vm32_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF))
+
+#define LINEAR_KERNEL_ADDRESS  ((vm_offset_t) 0xc0000000)
+
+#define VM_MIN_KERNEL_LOADED_ADDRESS   ((vm_offset_t) 0x0c000000U)
+#define VM_MAX_KERNEL_LOADED_ADDRESS   ((vm_offset_t) 0x1fffffffU)

 
 /*
  *     Conversion between 80386 pages and VM pages
 
 /*
  *     Conversion between 80386 pages and VM pages


@@ -155,54 +153,31 @@
 #define round_i386_to_vm(p)    (atop(round_page(i386_ptob(p))))
 #define vm_to_i386(p)          (i386_btop(ptoa(p)))
 
 #define round_i386_to_vm(p)    (atop(round_page(i386_ptob(p))))
 #define vm_to_i386(p)          (i386_btop(ptoa(p)))
 

-/*
- *     Physical memory is mapped 1-1 with virtual memory starting
- *     at VM_MIN_KERNEL_ADDRESS.
- */
-#define phystokv(a)    ((vm_offset_t)(a) + VM_MIN_KERNEL_ADDRESS)
-
-/*
- *     For 386 only, ensure that pages are installed in the
- *     kernel_pmap with VM_PROT_WRITE enabled.  This avoids
- *     code in pmap_enter that disallows a read-only mapping
- *     in the kernel's pmap.  (See ri-osc CR1387.)
- *
- *     An entry in kernel_pmap is made only by the kernel or
- *     a collocated server -- by definition (;-)), the requester
- *     is trusted code.  If it asked for read-only access,
- *     it won't attempt a write.  We don't have to enforce the
- *     restriction.  (Naturally, this assumes that any collocated
- *     server will _not_ depend on trapping write accesses to pages
- *     mapped read-only; this cannot be made to work in the current
- *     i386-inspired pmap model.)
- */
-
-/*#if defined(AT386)
-
-#define PMAP_ENTER_386_CHECK \
-       if (cpuid_family == CPUID_FAMILY_386)
-
-#else -- FIXME? We're only running on Pentiums or better */
-
-#define PMAP_ENTER_386_CHECK
-
-/*#endif*/
-
-#define PMAP_ENTER(pmap, virtual_address, page, protection, wired) \
+#define PMAP_ENTER(pmap, virtual_address, page, protection, flags, wired) \

        MACRO_BEGIN                                     \
        MACRO_BEGIN                                     \

+       pmap_t __pmap = (pmap);                         \
+       vm_page_t __page = (page);                      \

        vm_prot_t __prot__ =                            \
                (protection) & ~(page)->page_lock;      \
                                                        \
        vm_prot_t __prot__ =                            \
                (protection) & ~(page)->page_lock;      \
                                                        \

-       PMAP_ENTER_386_CHECK                            \
-       if ((pmap) == kernel_pmap)                      \
+       if (__pmap == kernel_pmap) {                    \

                __prot__ |= VM_PROT_WRITE;              \
                __prot__ |= VM_PROT_WRITE;              \

+       } else {                                        \
+               assert(!__page->encrypted);             \
+       }                                               \
+                                                       \

        pmap_enter(                                     \
        pmap_enter(                                     \

-               (pmap),                                 \
+               __pmap,                                 \

                (virtual_address),                      \
                (virtual_address),                      \

-               (page)->phys_addr,                      \
+               __page->phys_page,                      \

                __prot__,                               \
                __prot__,                               \

+               flags,                                  \

                (wired)                                 \
         );                                             \
        MACRO_END
 
                (wired)                                 \
         );                                             \
        MACRO_END
 

+#endif /* MACH_KERNEL_PRIVATE */
+
+#endif /* KERNEL_PRIVATE */
+

 #endif /* _MACH_I386_VM_PARAM_H_ */
 #endif /* _MACH_I386_VM_PARAM_H_ */