Module Name: src
Committed By: reinoud
Date: Tue Aug 23 15:35:53 UTC 2011
Modified Files:
src/sys/arch/usermode/usermode: pmap.c
Log Message:
Implement pmap_create()
To generate a diff of this commit:
cvs rdiff -u -r1.22 -r1.23 src/sys/arch/usermode/usermode/pmap.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/usermode/usermode/pmap.c
diff -u src/sys/arch/usermode/usermode/pmap.c:1.22 src/sys/arch/usermode/usermode/pmap.c:1.23
--- src/sys/arch/usermode/usermode/pmap.c:1.22 Tue Aug 23 15:12:31 2011
+++ src/sys/arch/usermode/usermode/pmap.c Tue Aug 23 15:35:53 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.c,v 1.22 2011/08/23 15:12:31 reinoud Exp $ */
+/* $NetBSD: pmap.c,v 1.23 2011/08/23 15:35:53 reinoud Exp $ */
/*-
* Copyright (c) 2011 Reinoud Zandijk <[email protected]>
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.22 2011/08/23 15:12:31 reinoud Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.23 2011/08/23 15:35:53 reinoud Exp $");
#include "opt_memsize.h"
#include "opt_kmempages.h"
@@ -37,6 +37,7 @@
#include <sys/mutex.h>
#include <sys/buf.h>
#include <sys/malloc.h>
+#include <sys/pool.h>
#include <machine/thunk.h>
#include <uvm/uvm.h>
@@ -77,6 +78,8 @@
static int pm_nentries = 0;
static uint64_t pm_entries_size = 0;
+static struct pool pmap_pool;
+
/* forwards */
void pmap_bootstrap(void);
static void pmap_page_activate(struct pv_entry *pv);
@@ -86,7 +89,8 @@
static struct pv_entry *pv_get(pmap_t pmap, int ppn, int lpn);
static struct pv_entry *pv_alloc(void);
static void pv_free(struct pv_entry *pv);
-void pmap_remove(pmap_t pmap, vaddr_t sva, vaddr_t eva);
+//void pmap_remove(pmap_t pmap, vaddr_t sva, vaddr_t eva);
+static void pmap_deferred_init(void);
/* exposed to signal handler */
vaddr_t kmem_k_start, kmem_k_end;
@@ -294,40 +298,44 @@
*vendp = kmem_ext_end; /* max available */
}
-/* XXXJDM */
-static struct pmap_list {
- bool used;
- struct pmap pmap;
-} pmap_list[128];
+static void
+pmap_deferred_init(void)
+{
+ /* XXX we COULD realloc our pv_table etc with malloc() but for what? */
+
+ /* create pmap pool */
+ pool_init(&pmap_pool, sizeof(struct pmap), 0, 0, 0,
+ "pmappool", NULL, IPL_NONE);
+}
pmap_t
pmap_create(void)
{
- int i;
+ static int pmap_initialised = 0;
+ struct pmap *pmap;
-panic("pmap_create\n");
-printf("pmap_create\n");
- for (i = 0; i < __arraycount(pmap_list); i++)
- if (pmap_list[i].used == false) {
- pmap_list[i].used = true;
- return &pmap_list[i].pmap;
- }
+ if (!pmap_initialised) {
+ pmap_deferred_init();
+ pmap_initialised = 1;
+ }
+
+ aprint_debug("pmap_create\n");
+ pmap = pool_get(&pmap_pool, PR_WAITOK);
+ memset(pmap, 0, sizeof(*pmap));
+
+ pmap->pm_count = 1;
+ pmap->pm_flags = 0;
+ pmap->pm_entries = (struct pv_entry **) malloc(
+ pm_entries_size, M_VMPMAP,
+ M_WAITOK | M_ZERO);
- printf("pmap_create: out of space\n");
- return NULL;
+ return pmap;
}
void
pmap_destroy(pmap_t pmap)
{
- int i;
-
-aprint_debug("pmap_destroy\n");
- for (i = 0; i < __arraycount(pmap_list); i++)
- if (pmap == &pmap_list[i].pmap) {
- pmap_list[i].used = false;
- break;
- }
+aprint_debug("pmap_destroy not implemented!\n");
}
void
