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