xnu-6153.11.26.tar.gz

[apple/xnu.git] / bsd / i386 / param.h

diff --git a/bsd/i386/param.h b/bsd/i386/param.h
index 084e9f30fa3cb27e13ddb5d4dfea04a97b4ce2fa..bff89a5168c4738f7e8285b56ec9873dbb0be8ca 100644 (file)
--- a/bsd/i386/param.h
+++ b/bsd/i386/param.h
@@ -1,17 +1,20 @@
 /*
 /*

- * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2010 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@

  *
  *

- * @APPLE_LICENSE_HEADER_START@
- * 
- * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
- * 

  * 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
  * 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.
- * 
+ * 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,
  * 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,


@@ -19,8 +22,8 @@
  * 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.
  * 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@

  */
 /*-
  * Copyright (c) 1990, 1993
  */
 /*-
  * Copyright (c) 1990, 1993


@@ -69,27 +72,27 @@
 #ifndef _I386_PARAM_H_
 #define _I386_PARAM_H_
 
 #ifndef _I386_PARAM_H_
 #define _I386_PARAM_H_
 

+#include <i386/_param.h>
+

 /*
  * Round p (pointer or byte index) up to a correctly-aligned value for all
 /*
  * Round p (pointer or byte index) up to a correctly-aligned value for all

- * data types (int, long, ...).   The result is u_int and must be cast to
- * any desired pointer type.
+ * data types (int, long, ...).   The result is unsigned int and must be
+ * cast to any desired pointer type.

  */
  */

-#define        ALIGNBYTES      3
-#define        ALIGN(p)        (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
-
-#define        NBPG            4096            /* bytes/page */
-#define        PGOFSET         (NBPG-1)        /* byte offset into page */
-#define        PGSHIFT         12              /* LOG2(NBPG) */
+#define ALIGNBYTES      __DARWIN_ALIGNBYTES
+#define ALIGN(p)        __DARWIN_ALIGN(p)

 
 

-#define        DEV_BSIZE       512
-#define        DEV_BSHIFT      9               /* log2(DEV_BSIZE) */
-#define BLKDEV_IOSIZE  2048
-#define        MAXPHYS         (64 * 1024)     /* max raw I/O transfer size */
+#define NBPG            4096            /* bytes/page */
+#define PGOFSET         (NBPG-1)        /* byte offset into page */
+#define PGSHIFT         12              /* LOG2(NBPG) */

 
 

-#define        STACK_GROWS_UP  0               /* stack grows to lower addresses */
+#define DEV_BSIZE       512
+#define DEV_BSHIFT      9               /* log2(DEV_BSIZE) */
+#define BLKDEV_IOSIZE   2048
+#define MAXPHYS         (128 * 1024)    /* max raw I/O transfer size */

 
 

-#define        CLSIZE          1
-#define        CLSIZELOG2      0
+#define CLSIZE          1
+#define CLSIZELOG2      0

 
 /*
  * Constants related to network buffer management.
 
 /*
  * Constants related to network buffer management.


@@ -98,45 +101,47 @@
  * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
  * of the hardware page size.
  */
  * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
  * of the hardware page size.
  */

-#define        MSIZE           256             /* size of an mbuf */
-#define        MCLBYTES        2048            /* large enough for ether MTU */
-#define        MCLSHIFT        11
-#define        MCLOFSET        (MCLBYTES - 1)
+#define MSIZESHIFT      8                       /* 256 */
+#define MSIZE           (1 << MSIZESHIFT)       /* size of an mbuf */
+#define MCLSHIFT        11                      /* 2048 */
+#define MCLBYTES        (1 << MCLSHIFT)         /* size of an mbuf cluster */
+#define MBIGCLSHIFT     12                      /* 4096 */
+#define MBIGCLBYTES     (1 << MBIGCLSHIFT)      /* size of a big cluster */
+#define M16KCLSHIFT     14                      /* 16384 */
+#define M16KCLBYTES     (1 << M16KCLSHIFT)      /* size of a jumbo cluster */
+
+#define MCLOFSET        (MCLBYTES - 1)

 #ifndef NMBCLUSTERS
 #ifndef NMBCLUSTERS

-#ifdef GATEWAY
-#define        NMBCLUSTERS     ((1024 * 1024) / MCLBYTES)      /* cl map size: 1MB */
-#else
-#define        NMBCLUSTERS     ((1024 * 512) / MCLBYTES)       /* cl map size: 0.5MB */
-#endif
+#define NMBCLUSTERS     ((1024 * 1024) / MCLBYTES)      /* cl map size: 1MB */

 #endif
 
 /*
  * Some macros for units conversion
  */
 /* Core clicks (NeXT_page_size bytes) to segments and vice versa */
 #endif
 
 /*
  * Some macros for units conversion
  */
 /* Core clicks (NeXT_page_size bytes) to segments and vice versa */

-#define        ctos(x) (x)
-#define        stoc(x) (x)
+#define ctos(x) (x)
+#define stoc(x) (x)

 
 /* Core clicks (4096 bytes) to disk blocks */
 
 /* Core clicks (4096 bytes) to disk blocks */

-#define        ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT))
-#define        dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT))
-#define        dtob(x) ((x)<<DEV_BSHIFT)
+#define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT))
+#define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT))
+#define dtob(x) ((x)<<DEV_BSHIFT)

 
 /* clicks to bytes */
 
 /* clicks to bytes */

-#define        ctob(x) ((x)<<PGSHIFT)
+#define ctob(x) ((x)<<PGSHIFT)

 
 /* bytes to clicks */
 
 /* bytes to clicks */

-#define        btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT)
+#define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT)

 
 #ifdef __APPLE__
 #define  btodb(bytes, devBlockSize)         \
 
 #ifdef __APPLE__
 #define  btodb(bytes, devBlockSize)         \

-        ((unsigned)(bytes) / devBlockSize)
+       ((unsigned)(bytes) / devBlockSize)

 #define  dbtob(db, devBlockSize)            \
 #define  dbtob(db, devBlockSize)            \

-        ((unsigned)(db) * devBlockSize)
+       ((unsigned)(db) * devBlockSize)

 #else
 #else

-#define        btodb(bytes)                    /* calculates (bytes / DEV_BSIZE) */ \
+#define btodb(bytes)                    /* calculates (bytes / DEV_BSIZE) */ \

        ((unsigned)(bytes) >> DEV_BSHIFT)
        ((unsigned)(bytes) >> DEV_BSHIFT)

-#define        dbtob(db)                       /* calculates (db * DEV_BSIZE) */ \
+#define dbtob(db)                       /* calculates (db * DEV_BSIZE) */ \

        ((unsigned)(db) << DEV_BSHIFT)
 #endif
 
        ((unsigned)(db) << DEV_BSHIFT)
 #endif
 


@@ -146,21 +151,21 @@
  * add an entry to cdevsw/bdevsw for that purpose.
  * For now though just use DEV_BSIZE.
  */
  * add an entry to cdevsw/bdevsw for that purpose.
  * For now though just use DEV_BSIZE.
  */

-#define        bdbtofsb(bn)    ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
+#define bdbtofsb(bn)    ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))

 
 /*
  * Macros to decode (and encode) processor status word.
  */
 
 /*
  * Macros to decode (and encode) processor status word.
  */

-#define STATUS_WORD(rpl, ipl)  (((ipl) << 8) | (rpl))
-#define        USERMODE(x)             (((x) & 3) == 3)
-#define        BASEPRI(x)              (((x) & (255 << 8)) == 0)
+#define STATUS_WORD(rpl, ipl)   (((ipl) << 8) | (rpl))
+#define USERMODE(x)             (((x) & 3) == 3)
+#define BASEPRI(x)              (((x) & (255 << 8)) == 0)

 
 
 
 

-#if    defined(KERNEL) || defined(STANDALONE)
-#define        DELAY(n) delay(n)
+#if     defined(KERNEL) || defined(STANDALONE)
+#define DELAY(n) delay(n)

 
 

-#else  /* defined(KERNEL) || defined(STANDALONE) */
-#define        DELAY(n)        { register int N = (n); while (--N > 0); }
-#endif /* defined(KERNEL) || defined(STANDALONE) */
+#else   /* defined(KERNEL) || defined(STANDALONE) */
+#define DELAY(n)        { int N = (n); while (--N > 0); }
+#endif  /* defined(KERNEL) || defined(STANDALONE) */

 
 #endif /* _I386_PARAM_H_ */
 
 #endif /* _I386_PARAM_H_ */