| 1 | /*
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| 2 | * Memory range attribute operations, peformed on /dev/mem
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| 3 | */
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| 4 |
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| 5 | #ifdef HAVE_XORG_CONFIG_H
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| 6 | #include <xorg-config.h>
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| 7 | #endif
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| 8 |
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| 9 | #ifndef _MEMRANGE_H
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| 10 | #define _MEMRANGE_H
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| 11 |
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| 12 | /* Memory range attributes */
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| 13 | #define MDF_UNCACHEABLE (1<<0) /* region not cached */
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| 14 | #define MDF_WRITECOMBINE (1<<1) /* region supports "write combine"
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| 15 | * action */
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| 16 | #define MDF_WRITETHROUGH (1<<2) /* write-through cached */
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| 17 | #define MDF_WRITEBACK (1<<3) /* write-back cached */
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| 18 | #define MDF_WRITEPROTECT (1<<4) /* read-only region */
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| 19 | #define MDF_ATTRMASK (0x00ffffff)
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| 20 |
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| 21 | #define MDF_FIXBASE (1<<24) /* fixed base */
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| 22 | #define MDF_FIXLEN (1<<25) /* fixed length */
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| 23 | #define MDF_FIRMWARE (1<<26) /* set by firmware (XXX not useful?) */
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| 24 | #define MDF_ACTIVE (1<<27) /* currently active */
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| 25 | #define MDF_BOGUS (1<<28) /* we don't like it */
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| 26 | #define MDF_FIXACTIVE (1<<29) /* can't be turned off */
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| 27 | #define MDF_BUSY (1<<30) /* range is in use */
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| 28 |
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| 29 | struct mem_range_desc {
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| 30 | u_int64_t mr_base;
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| 31 | u_int64_t mr_len;
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| 32 | int mr_flags;
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| 33 | char mr_owner[8];
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| 34 | };
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| 35 |
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| 36 | struct mem_range_op {
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| 37 | struct mem_range_desc *mo_desc;
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| 38 | int mo_arg[2];
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| 39 | #define MEMRANGE_SET_UPDATE 0
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| 40 | #define MEMRANGE_SET_REMOVE 1
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| 41 | /* XXX want a flag that says "set and undo when I exit" */
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| 42 | };
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| 43 | #define MEMRANGE_GET _IOWR('m', 50, struct mem_range_op)
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| 44 | #define MEMRANGE_SET _IOW('m', 51, struct mem_range_op)
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| 45 |
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| 46 | #ifdef _KERNEL
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| 47 |
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| 48 | struct mem_range_softc;
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| 49 | struct mem_range_ops {
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| 50 | void (*init) __P((struct mem_range_softc * sc));
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| 51 | int (*set) __P((struct mem_range_softc * sc, struct mem_range_desc * mrd, int *arg));
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| 52 | void (*initAP) __P((struct mem_range_softc * sc));
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| 53 | };
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| 54 |
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| 55 | struct mem_range_softc {
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| 56 | struct mem_range_ops *mr_op;
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| 57 | int mr_cap;
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| 58 | int mr_ndesc;
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| 59 | struct mem_range_desc *mr_desc;
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| 60 | };
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| 61 |
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| 62 | extern struct mem_range_softc mem_range_softc;
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| 63 |
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| 64 | extern int mem_range_attr_get __P((struct mem_range_desc * mrd, int *arg));
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| 65 | extern int mem_range_attr_set __P((struct mem_range_desc * mrd, int *arg));
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| 66 | extern void mem_range_AP_init __P((void));
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| 67 | #endif
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| 68 |
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| 69 | #endif
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