BSD 4_4 release

[unix-history] / usr / src / sys / i386 / include / vmparam.h

diff --git a/usr/src/sys/i386/include/vmparam.h b/usr/src/sys/i386/include/vmparam.h
index 9eaf632..7157d21 100644 (file)
--- a/usr/src/sys/i386/include/vmparam.h
+++ b/usr/src/sys/i386/include/vmparam.h
@@ -1,35 +1,60 @@
 /*-
 /*-

- * Copyright (c) 1990 The Regents of the University of California.
- * All rights reserved.
+ * Copyright (c) 1990, 1993
+ *     The Regents of the University of California.  All rights reserved.

  *
  * This code is derived from software contributed to Berkeley by
  * William Jolitz.
  *
  *
  * This code is derived from software contributed to Berkeley by
  * William Jolitz.
  *

- * %sccs.include.noredist.c%
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.

  *
  *

- *     @(#)vmparam.h   5.1 (Berkeley) %G%
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *     @(#)vmparam.h   8.1 (Berkeley) 6/11/93

  */
 
  */
 

+

 /*
  * Machine dependent constants for 386.
  */
 
 /*
  * Virtual address space arrangement. On 386, both user and kernel
 /*
  * Machine dependent constants for 386.
  */
 
 /*
  * Virtual address space arrangement. On 386, both user and kernel

- * share the address space, not unlike the arrangements on the vax.
+ * share the address space, not unlike the vax.

  * USRTEXT is the start of the user text/data space, while USRSTACK
  * is the top (end) of the user stack. Immediately above the user stack
  * resides the user structure, which is UPAGES long and contains the
  * USRTEXT is the start of the user text/data space, while USRSTACK
  * is the top (end) of the user stack. Immediately above the user stack
  * resides the user structure, which is UPAGES long and contains the

- * kernel stack. As such, UPAGES is the number of pages from the beginning
- * of the P1 region to the beginning of the user stack. Also, the P0
- * region begins with user text and ends with user data.
- * Immediately after the user structure is the kernal address space.
+ * kernel stack.
+ *
+ * Immediately after the user structure is the page table map, and then
+ * kernal address space.

  */
 #define        USRTEXT         0
  */
 #define        USRTEXT         0

-#define        USRSTACK        0xFDFFE000      /* Sysbase - UPAGES*NBPG */
-#define        BTOPUSRSTACK    (0xFE000-(UPAGES))      /* btop(USRSTACK) */
-
-#define P1PAGES                0xFE000
+#define        USRSTACK        0xFDBFE000
+#define        BTOPUSRSTACK    (0xFDC00-(UPAGES))      /* btop(USRSTACK) */

 #define        LOWPAGES        0
 #define HIGHPAGES      UPAGES
 
 #define        LOWPAGES        0
 #define HIGHPAGES      UPAGES
 


@@ -65,6 +90,11 @@
 #define        SYSPTSIZE       (2*NPTEPG)
 #define        USRPTSIZE       (2*NPTEPG)
 
 #define        SYSPTSIZE       (2*NPTEPG)
 #define        USRPTSIZE       (2*NPTEPG)
 

+/*
+ * Size of User Raw I/O map
+ */
+#define        USRIOSIZE       300
+

 /*
  * The size of the clock loop.
  */
 /*
  * The size of the clock loop.
  */


@@ -96,7 +126,7 @@
  * { wfj 6/16/89: Retail AT memory expansion $800/megabyte, loan of $17
  *   on disk costing $7/mb or $0.18 (in memory still 100:1 in cost!) }
  */
  * { wfj 6/16/89: Retail AT memory expansion $800/megabyte, loan of $17
  *   on disk costing $7/mb or $0.18 (in memory still 100:1 in cost!) }
  */

-#define        SAFERSS         32              /* nominal ``small'' resident set size
+#define        SAFERSS         8               /* nominal ``small'' resident set size

                                           protected against replacement */
 
 /*
                                           protected against replacement */
 
 /*


@@ -162,11 +192,65 @@
 #define        LOTSOFMEM       2
 
 #define        mapin(pte, v, pfnum, prot) \
 #define        LOTSOFMEM       2
 
 #define        mapin(pte, v, pfnum, prot) \

-       (*(int *)(pte) = ((pfnum)<<PGSHIFT) | (prot))
+       {(*(int *)(pte) = ((pfnum)<<PGSHIFT) | (prot)) ; }

 
 /*
 
 /*

- * Invalidate a cluster (optimized here for standard CLSIZE).
+ * Mach derived constants

  */
  */

-#if CLSIZE == 1
-#define        tbiscl(v)
+
+/* user/kernel map constants */
+#define VM_MIN_ADDRESS         ((vm_offset_t)0)
+#define VM_MAXUSER_ADDRESS     ((vm_offset_t)0xFDBFD000)
+#define UPT_MIN_ADDRESS                ((vm_offset_t)0xFDC00000)
+#define UPT_MAX_ADDRESS                ((vm_offset_t)0xFDFF7000)
+#define VM_MAX_ADDRESS         UPT_MAX_ADDRESS
+#define VM_MIN_KERNEL_ADDRESS  ((vm_offset_t)0xFDFF7000)
+#define UPDT                   VM_MIN_KERNEL_ADDRESS
+#define KPT_MIN_ADDRESS                ((vm_offset_t)0xFDFF8000)
+#define KPT_MAX_ADDRESS                ((vm_offset_t)0xFDFFF000)
+#define VM_MAX_KERNEL_ADDRESS  ((vm_offset_t)0xFF7FF000)
+
+/* virtual sizes (bytes) for various kernel submaps */
+#define VM_MBUF_SIZE           (NMBCLUSTERS*MCLBYTES)
+#define VM_KMEM_SIZE           (NKMEMCLUSTERS*CLBYTES)
+#define VM_PHYS_SIZE           (USRIOSIZE*CLBYTES)
+
+/* # of kernel PT pages (initial only, can grow dynamically) */
+#define VM_KERNEL_PT_PAGES     ((vm_size_t)2)          /* XXX: SYSPTSIZE */
+
+/* pcb base */
+#define        pcbb(p)         ((u_int)(p)->p_addr)
+
+/*
+ * Flush MMU TLB
+ */
+
+#ifndef I386_CR3PAT
+#define        I386_CR3PAT     0x0
+#endif
+
+#ifdef notyet
+#define _cr3() ({u_long rtn; \
+       asm (" movl %%cr3,%%eax; movl %%eax,%0 " \
+               : "=g" (rtn) \
+               : \
+               : "ax"); \
+       rtn; \
+})
+
+#define load_cr3(s) ({ u_long val; \
+       val = (s) | I386_CR3PAT; \
+       asm ("movl %0,%%eax; movl %%eax,%%cr3" \
+               :  \
+               : "g" (val) \
+               : "ax"); \
+})
+
+#define tlbflush() ({ u_long val; \
+       val = u.u_pcb.pcb_ptd | I386_CR3PAT; \
+       asm ("movl %0,%%eax; movl %%eax,%%cr3" \
+               :  \
+               : "g" (val) \
+               : "ax"); \
+})

 #endif
 #endif