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/*
* Memory range attribute operations, peformed on /dev/mem
*
* $FreeBSD: src/sys/sys/memrange.h,v 1.4 1999/12/29 04:24:44 peter Exp $
*/
/* $XFree86$ */
#ifndef _MEMRANGE_H
#define _MEMRANGE_H
/* Memory range attributes */
#define MDF_UNCACHEABLE (1<<0) /* region not cached */
#define MDF_WRITECOMBINE (1<<1) /* region supports "write combine"
* action */
#define MDF_WRITETHROUGH (1<<2) /* write-through cached */
#define MDF_WRITEBACK (1<<3) /* write-back cached */
#define MDF_WRITEPROTECT (1<<4) /* read-only region */
#define MDF_ATTRMASK (0x00ffffff)
#define MDF_FIXBASE (1<<24) /* fixed base */
#define MDF_FIXLEN (1<<25) /* fixed length */
#define MDF_FIRMWARE (1<<26) /* set by firmware (XXX not useful?) */
#define MDF_ACTIVE (1<<27) /* currently active */
#define MDF_BOGUS (1<<28) /* we don't like it */
#define MDF_FIXACTIVE (1<<29) /* can't be turned off */
#define MDF_BUSY (1<<30) /* range is in use */
struct mem_range_desc {
u_int64_t mr_base;
u_int64_t mr_len;
int mr_flags;
char mr_owner[8];
};
struct mem_range_op {
struct mem_range_desc *mo_desc;
int mo_arg[2];
#define MEMRANGE_SET_UPDATE 0
#define MEMRANGE_SET_REMOVE 1
/* XXX want a flag that says "set and undo when I exit" */
};
#define MEMRANGE_GET _IOWR('m', 50, struct mem_range_op)
#define MEMRANGE_SET _IOW('m', 51, struct mem_range_op)
#ifdef _KERNEL
struct mem_range_softc;
struct mem_range_ops {
void (*init) __P((struct mem_range_softc * sc));
int (*set) __P((struct mem_range_softc * sc, struct mem_range_desc * mrd, int *arg));
void (*initAP) __P((struct mem_range_softc * sc));
};
struct mem_range_softc {
struct mem_range_ops *mr_op;
int mr_cap;
int mr_ndesc;
struct mem_range_desc *mr_desc;
};
extern struct mem_range_softc mem_range_softc;
extern int mem_range_attr_get __P((struct mem_range_desc * mrd, int *arg));
extern int mem_range_attr_set __P((struct mem_range_desc * mrd, int *arg));
extern void mem_range_AP_init __P((void));
#endif
#endif
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