[src/trunk]: src/sys/common/pmap/tlb Make the vm_page_md definition common fo...

[matt <matt%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/3ea599a97a94
branches:  trunk
changeset: 766324:3ea599a97a94
user:      matt <matt%NetBSD.org@localhost>
date:      Mon Jun 20 19:31:58 2011 +0000

description:
Make the vm_page_md definition common for all users of the shared tlb pmap.

diffstat:

 sys/common/pmap/tlb/vmpagemd.h |  112 +++++++++++++++++++++++++++++++++++++++++
 1 files changed, 112 insertions(+), 0 deletions(-)

diffs (116 lines):

diff -r abdfb42fabf8 -r 3ea599a97a94 sys/common/pmap/tlb/vmpagemd.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/common/pmap/tlb/vmpagemd.h    Mon Jun 20 19:31:58 2011 +0000
@@ -0,0 +1,112 @@
+/*     $NetBSD: vmpagemd.h,v 1.1 2011/06/20 19:31:58 matt Exp $        */
+
+/*-
+ * Copyright (c) 2011 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Raytheon BBN Technologies Corp and Defense Advanced Research Projects
+ * Agency and which was developed by Matt Thomas of 3am Software Foundry.
+ *
+ * This material is based upon work supported by the Defense Advanced Research
+ * Projects Agency and Space and Naval Warfare Systems Center, Pacific, under
+ * Contract No. N66001-09-C-2073.
+ * Approved for Public Release, Distribution Unlimited
+ *
+ * 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.
+ *
+ * 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.
+ */
+
+#ifndef _COMMON_PMAP_TLB_VMPAGEMD_H_
+#define _COMMON_PMAP_TLB_VMPAGEMD_H_
+
+#ifdef _LOCORE
+#error use assym.h instead
+#endif
+
+#ifdef _MODULE
+#error this file should not be included by loadable kernel modules
+#endif
+
+#include "opt_modular.h"
+#include "opt_multiprocessor.h"
+
+#include <sys/mutex.h>
+
+#define        __HAVE_VM_PAGE_MD
+
+typedef struct pv_entry {
+       struct pv_entry *pv_next;
+       struct pmap *pv_pmap;
+       vaddr_t pv_va;
+} *pv_entry_t;
+
+#define        VM_PAGEMD_REFERENCED    0x0001  /* page has been recently referenced */
+#define        VM_PAGEMD_MODIFIED      0x0002  /* page has been modified */
+#define        VM_PAGEMD_POOLPAGE      0x0004  /* page is used as a poolpage */
+#define        VM_PAGEMD_EXECPAGE      0x0008  /* page is exec mapped */
+#ifdef __PMAP_VIRTUAL_CACHE_ALIASES
+#define        VM_PAGEMD_UNCACHED      0x0010  /* page is mapped uncached */
+#endif
+
+#ifdef __PMAP_VIRTUAL_CACHE_ALIASES
+#define        VM_PAGEMD_CACHED_P(mdpg)        (((mdpg)->mdpg_attrs & VM_PAGEMD_UNCACHED) == 0)
+#define        VM_PAGEMD_UNCACHED_P(mdpg)      (((mdpg)->mdpg_attrs & VM_PAGEMD_UNCACHED) != 0)
+#endif
+#define        VM_PAGEMD_MODIFIED_P(mdpg)      (((mdpg)->mdpg_attrs & VM_PAGEMD_MODIFIED) != 0)
+#define        VM_PAGEMD_REFERENCED_P(mdpg)    (((mdpg)->mdpg_attrs & VM_PAGEMD_REFERENCED) != 0)
+#define        VM_PAGEMD_POOLPAGE_P(mdpg)      (((mdpg)->mdpg_attrs & VM_PAGEMD_POOLPAGE) != 0)
+#define        VM_PAGEMD_EXECPAGE_P(mdpg)      (((mdpg)->mdpg_attrs & VM_PAGEMD_EXECPAGE) != 0)
+
+struct vm_page_md {
+       volatile u_int mdpg_attrs;      /* page attributes */
+       struct pv_entry mdpg_first;     /* pv_entry first */
+#if defined(MULTIPROCESSOR) || defined(MODULAR)
+       kmutex_t *mdpg_lock;            /* pv list lock */
+#define        VM_PAGEMD_PVLIST_LOCK_INIT(mdpg)        \
+       (mdpg)->mdpg_lock = NULL
+#define        VM_PAGEMD_PVLIST_LOCK(pg, list_change)  \
+       pmap_pvlist_lock(mdpg, list_change)
+#define        VM_PAGEMD_PVLIST_UNLOCK(mdpg)           \
+       mutex_spin_exit((mdpg)->mdpg_lock)
+#define        VM_PAGEMD_PVLIST_LOCKED_P(mdpg)         \
+       mutex_owner((mdpg)->mdpg_lock)
+#define        VM_PAGEMD_PVLIST_GEN(mdpg)              \
+       ((uint16_t)((mdpg)->mdpg_attrs >> 16))
+#else
+#define        VM_PAGEMD_PVLIST_LOCK_INIT(mdpg)        do { } while (/*CONSTCOND*/ 0)
+#define        VM_PAGEMD_PVLIST_LOCK(mdpg, lc) (mutex_spin_enter(&pmap_pvlist_mutex), 0)
+#define        VM_PAGEMD_PVLIST_UNLOCK(mdpg)   mutex_spin_exit(&pmap_pvlist_mutex)
+#define        VM_PAGEMD_PVLIST_LOCKED_P(mdpg) true
+#define        VM_PAGEMD_PVLIST_GEN(mdpg)              (0)
+#endif /* MULTIPROCESSOR || MODULAR */
+};
+
+#define VM_MDPAGE_INIT(pg)                                             \
+do {                                                                   \
+       (pg)->mdpage.mdpg_first.pv_next = NULL;                         \
+       (pg)->mdpage.mdpg_first.pv_pmap = NULL;                         \
+       (pg)->mdpage.mdpg_first.pv_va = (pg)->phys_addr;                \
+       (pg)->mdpage.mdpg_attrs = 0;                                    \
+       VM_PAGEMD_PVLIST_LOCK_INIT(&(pg)->mdpage);                      \
+} while (/* CONSTCOND */ 0)
+
+#endif /* __COMMON_PMAP_TLB_VMPAGEMD_H_ */