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Diffstat (limited to 'StdLib/Include/Ipf/machine/pmap.h')
| -rw-r--r-- | StdLib/Include/Ipf/machine/pmap.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/StdLib/Include/Ipf/machine/pmap.h b/StdLib/Include/Ipf/machine/pmap.h new file mode 100644 index 0000000000..04b78a3e60 --- /dev/null +++ b/StdLib/Include/Ipf/machine/pmap.h @@ -0,0 +1,162 @@ +/*-
+ * Copyright (c) 1998, 1999, 2000, 2001 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center and by Chris G. Demetriou.
+ *
+ * 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 NetBSD
+ * Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
+ */
+
+/*-
+ * Copyright (c) 1991 Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * the Systems Programming Group of the University of Utah Computer
+ * Science Department and William Jolitz of UUNET Technologies Inc.
+ *
+ * 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.
+ * 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.
+ *
+ * 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.
+ *
+ * Derived from hp300 version by Mike Hibler, this version by William
+ * Jolitz uses a recursive map [a pde points to the page directory] to
+ * map the page tables using the pagetables themselves. This is done to
+ * reduce the impact on kernel virtual memory for lots of sparse address
+ * space, and to reduce the cost of memory to each process.
+ *
+ * from: hp300: @(#)pmap.h 7.2 (Berkeley) 12/16/90
+ * from: @(#)pmap.h 7.4 (Berkeley) 5/12/91
+ * from: i386 pmap.h,v 1.54 1997/11/20 19:30:35 bde Exp
+ * $FreeBSD: src/sys/ia64/include/pmap.h,v 1.25 2005/09/03 23:53:50 marcel Exp $
+ */
+
+#ifndef _PMAP_MACHINE_
+#define _PMAP_MACHINE_
+
+#include <sys/lock.h>
+
+paddr_t vtophys(vaddr_t);
+
+struct pv_entry; /* Forward declaration. */
+
+struct pmap {
+ TAILQ_ENTRY(pmap) pm_list; /* list of all pmaps */
+ TAILQ_HEAD(,pv_entry) pm_pvlist; /* list of mappings in pmap */
+ int pm_count; /* pmap reference count */
+ struct simplelock pm_slock; /* lock on pmap */
+ u_int32_t pm_rid[5]; /* base RID for pmap */
+ int pm_active; /* active flag */
+ struct pmap_statistics pm_stats; /* pmap statistics */
+ unsigned long pm_cpus; /* mask of CPUs using pmap */
+
+};
+
+typedef struct pmap *pmap_t;
+
+/*
+ * For each vm_page_t, there is a list of all currently valid virtual
+ * mappings of that page. An entry is a pv_entry_t, the list is pv_pvlist.
+ */
+typedef struct pv_entry {
+ pmap_t pv_pmap; /* pmap where mapping lies */
+ vaddr_t pv_va; /* virtual address for mapping */
+ TAILQ_ENTRY(pv_entry) pv_list;
+ TAILQ_ENTRY(pv_entry) pv_plist;
+} *pv_entry_t;
+
+/* pvh_attrs */
+#define PGA_MODIFIED 0x01 /* modified */
+#define PGA_REFERENCED 0x02 /* referenced */
+
+
+extern struct pmap kernel_pmap_store;
+
+#define pmap_kernel() (&kernel_pmap_store)
+
+#define pmap_resident_count(pmap) ((pmap)->pm_stats.resident_count)
+#define pmap_wired_count(pmap) ((pmap)->pm_stats.wired_count)
+
+#define pmap_copy(dp, sp, da, l, sa) /* nothing */
+#define pmap_update(pmap) /* nothing (yet) */
+
+void pmap_bootstrap(void);
+
+#define pmap_is_referenced(pg) \
+ (((pg)->mdpage.pvh_attrs & PGA_REFERENCED) != 0)
+#define pmap_is_modified(pg) \
+ (((pg)->mdpage.pvh_attrs & PGA_MODIFIED) != 0)
+
+
+#define PMAP_STEAL_MEMORY /* enable pmap_steal_memory() */
+
+/*
+ * Alternate mapping hooks for pool pages. Avoids thrashing the TLB.
+ */
+#define PMAP_MAP_POOLPAGE(pa) IA64_PHYS_TO_RR7((pa))
+#define PMAP_UNMAP_POOLPAGE(va) IA64_RR_MASK((va))
+
+/*
+ * Macros for locking pmap structures.
+ *
+ * Note that we if we access the kernel pmap in interrupt context, it
+ * is only to update statistics. Since stats are updated using atomic
+ * operations, locking the kernel pmap is not necessary. Therefore,
+ * it is not necessary to block interrupts when locking pmap strucutres.
+ */
+#define PMAP_LOCK(pmap) simple_lock(&(pmap)->pm_slock)
+#define PMAP_UNLOCK(pmap) simple_unlock(&(pmap)->pm_slock)
+
+
+#define PMAP_VHPT_LOG2SIZE 16
+
+
+#endif /* _PMAP_MACHINE_ */
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