Initial source

1 files changed, 62 insertions, 0 deletions

diff --git a/i386/pc/phys_mem_add.c b/i386/pc/phys_mem_add.c
new file mode 100644
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+++ b/i386/pc/phys_mem_add.c
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+/* 
+ * Copyright (c) 1995 The University of Utah and
+ * the Computer Systems Laboratory at the University of Utah (CSL).
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify and distribute this software is hereby
+ * granted provided that (1) source code retains these copyright, permission,
+ * and disclaimer notices, and (2) redistributions including binaries
+ * reproduce the notices in supporting documentation, and (3) all advertising
+ * materials mentioning features or use of this software display the following
+ * acknowledgement: ``This product includes software developed by the
+ * Computer Systems Laboratory at the University of Utah.''
+ *
+ * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
+ * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
+ * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ *
+ * CSL requests users of this software to return to csl-dist@cs.utah.edu any
+ * improvements that they make and grant CSL redistribution rights.
+ *
+ *      Author: Bryan Ford, University of Utah CSL
+ */
+
+#include <mach/machine/vm_types.h>
+#include <mach/lmm.h>
+#include <malloc.h>
+
+#include "vm_param.h"
+#include "phys_mem.h"
+
+/* Note that this routine takes _physical_ addresses, not virtual.  */
+void phys_mem_add(vm_offset_t min, vm_size_t size)
+{
+	vm_offset_t max = min + size;
+
+	/* Add the memory region with the proper flags and priority.  */
+	if (max <= 1*1024*1024)
+	{
+		lmm_add(&malloc_lmm, phystokv(min), size,
+			LMMF_1MB | LMMF_16MB, LMM_PRI_1MB);
+	}
+	else
+	{
+		if (min < 16*1024*1024)
+		{
+			vm_offset_t nmax = max;
+			if (nmax > 16*1024*1024) nmax = 16*1024*1024;
+			lmm_add(&malloc_lmm, phystokv(min), nmax - min,
+				LMMF_16MB, LMM_PRI_16MB);
+		}
+		if (max > 16*1024*1024)
+		{
+			vm_offset_t nmin = min;
+			if (nmin < 16*1024*1024) nmin = 16*1024*1024;
+			lmm_add(&malloc_lmm, phystokv(nmin), max - nmin, 0, 0);
+		}
+	}
+
+	if (max > phys_mem_max)
+		phys_mem_max = max;
+}
+