patch-2.4.20 linux-2.4.20/include/asm-x86_64/mtrr.h
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- Lines: 121
- Date:
Thu Nov 28 15:53:15 2002
- Orig file:
linux-2.4.19/include/asm-x86_64/mtrr.h
- Orig date:
Wed Dec 31 16:00:00 1969
diff -urN linux-2.4.19/include/asm-x86_64/mtrr.h linux-2.4.20/include/asm-x86_64/mtrr.h
@@ -0,0 +1,120 @@
+/* Generic MTRR (Memory Type Range Register) ioctls.
+
+ Copyright (C) 1997-1999 Richard Gooch
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License as published by the Free Software Foundation; either
+ version 2 of the License, or (at your option) any later version.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this library; if not, write to the Free
+ Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+ Richard Gooch may be reached by email at rgooch@atnf.csiro.au
+ The postal address is:
+ Richard Gooch, c/o ATNF, P. O. Box 76, Epping, N.S.W., 2121, Australia.
+*/
+#ifndef _LINUX_MTRR_H
+#define _LINUX_MTRR_H
+
+#include <linux/config.h>
+#include <linux/ioctl.h>
+
+#define MTRR_IOCTL_BASE 'M'
+
+struct mtrr_sentry
+{
+ unsigned long base; /* Base address */
+ unsigned int size; /* Size of region */
+ unsigned int type; /* Type of region */
+};
+
+struct mtrr_gentry
+{
+ unsigned long base; /* Base address */
+ unsigned int size; /* Size of region */
+ unsigned int regnum; /* Register number */
+ unsigned int type; /* Type of region */
+};
+
+/* These are the various ioctls */
+#define MTRRIOC_ADD_ENTRY _IOW(MTRR_IOCTL_BASE, 0, struct mtrr_sentry)
+#define MTRRIOC_SET_ENTRY _IOW(MTRR_IOCTL_BASE, 1, struct mtrr_sentry)
+#define MTRRIOC_DEL_ENTRY _IOW(MTRR_IOCTL_BASE, 2, struct mtrr_sentry)
+#define MTRRIOC_GET_ENTRY _IOWR(MTRR_IOCTL_BASE, 3, struct mtrr_gentry)
+#define MTRRIOC_KILL_ENTRY _IOW(MTRR_IOCTL_BASE, 4, struct mtrr_sentry)
+#define MTRRIOC_ADD_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 5, struct mtrr_sentry)
+#define MTRRIOC_SET_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 6, struct mtrr_sentry)
+#define MTRRIOC_DEL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 7, struct mtrr_sentry)
+#define MTRRIOC_GET_PAGE_ENTRY _IOWR(MTRR_IOCTL_BASE, 8, struct mtrr_gentry)
+#define MTRRIOC_KILL_PAGE_ENTRY _IOW(MTRR_IOCTL_BASE, 9, struct mtrr_sentry)
+
+/* These are the region types */
+#define MTRR_TYPE_UNCACHABLE 0
+#define MTRR_TYPE_WRCOMB 1
+/*#define MTRR_TYPE_ 2*/
+/*#define MTRR_TYPE_ 3*/
+#define MTRR_TYPE_WRTHROUGH 4
+#define MTRR_TYPE_WRPROT 5
+#define MTRR_TYPE_WRBACK 6
+#define MTRR_NUM_TYPES 7
+
+#ifdef MTRR_NEED_STRINGS
+static char *mtrr_strings[MTRR_NUM_TYPES] =
+{
+ "uncachable", /* 0 */
+ "write-combining", /* 1 */
+ "?", /* 2 */
+ "?", /* 3 */
+ "write-through", /* 4 */
+ "write-protect", /* 5 */
+ "write-back", /* 6 */
+};
+#endif
+
+#ifdef __KERNEL__
+#include <linux/types.h>
+
+/* The following functions are for use by other drivers */
+#ifdef CONFIG_MTRR
+extern int mtrr_add (__u64 base, __u32 size, unsigned int type, char increment);
+extern int mtrr_add_page (__u64 base, __u32 size, unsigned int type, char increment);
+extern int mtrr_del (int reg, __u64 base, __u32 size);
+extern int mtrr_del_page (int reg, __u64 base, __u32 size);
+#else
+static __inline__ int mtrr_add (__u64 base, __u32 size,
+ unsigned int type, char increment)
+{
+ return -ENODEV;
+}
+static __inline__ int mtrr_add_page (__u64 base, __u32 size,
+ unsigned int type, char increment)
+{
+ return -ENODEV;
+}
+static __inline__ int mtrr_del (int reg, __u64 base, __u32 size)
+{
+ return -ENODEV;
+}
+static __inline__ int mtrr_del_page (int reg, __u64 base, __u32 size)
+{
+ return -ENODEV;
+}
+#endif
+
+/* The following functions are for initialisation: don't use them! */
+extern int mtrr_init (void);
+#if defined(CONFIG_SMP) && defined(CONFIG_MTRR)
+extern void mtrr_init_boot_cpu (void);
+extern void mtrr_init_secondary_cpu (void);
+#endif
+
+#endif
+
+#endif /* _LINUX_MTRR_H */
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