2 * Memory range attribute operations, performed on /dev/mem
7 #ifndef _SYS_MEMRANGE_H_
8 #define _SYS_MEMRANGE_H_
10 #include <sys/ioccom.h>
12 /* Memory range attributes */
13 #define MDF_UNCACHEABLE (1<<0) /* region not cached */
14 #define MDF_WRITECOMBINE (1<<1) /* region supports "write combine" action */
15 #define MDF_WRITETHROUGH (1<<2) /* write-through cached */
16 #define MDF_WRITEBACK (1<<3) /* write-back cached */
17 #define MDF_WRITEPROTECT (1<<4) /* read-only region */
18 #define MDF_UNKNOWN (1<<5) /* any state we don't understand */
19 #define MDF_ATTRMASK (0x00ffffff)
21 #define MDF_FIXBASE (1<<24) /* fixed base */
22 #define MDF_FIXLEN (1<<25) /* fixed length */
23 #define MDF_FIRMWARE (1<<26) /* set by firmware (XXX not useful?) */
24 #define MDF_ACTIVE (1<<27) /* currently active */
25 #define MDF_BOGUS (1<<28) /* we don't like it */
26 #define MDF_FIXACTIVE (1<<29) /* can't be turned off */
27 #define MDF_BUSY (1<<30) /* range is in use */
28 #define MDF_FORCE (1<<31) /* force risky changes */
40 struct mem_range_desc *mo_desc;
42 #define MEMRANGE_SET_UPDATE 0
43 #define MEMRANGE_SET_REMOVE 1
44 /* XXX want a flag that says "set and undo when I exit" */
47 #define MEMRANGE_GET _IOWR('m', 50, struct mem_range_op)
48 #define MEMRANGE_SET _IOW('m', 51, struct mem_range_op)
50 #define ME_STATE_INVALID 0
51 #define ME_STATE_VALID 1
52 #define ME_STATE_MAPPED 2
62 #define MEM_EXTRACT_PADDR _IOWR('m', 52, struct mem_extract)
64 struct mem_livedump_arg {
72 #define MEM_KERNELDUMP _IOW('m', 53, struct mem_livedump_arg)
76 MALLOC_DECLARE(M_MEMDESC);
78 struct mem_range_softc;
81 void (*init)(struct mem_range_softc *sc);
82 int (*set)(struct mem_range_softc *sc, struct mem_range_desc *mrd, int *arg);
83 void (*initAP)(struct mem_range_softc *sc);
84 void (*reinit)(struct mem_range_softc *sc);
87 struct mem_range_softc
89 struct mem_range_ops *mr_op;
92 struct mem_range_desc *mr_desc;
95 extern struct mem_range_softc mem_range_softc;
97 extern void mem_range_init(void);
98 extern void mem_range_destroy(void);
100 extern int mem_range_attr_get(struct mem_range_desc *mrd, int *arg);
101 extern int mem_range_attr_set(struct mem_range_desc *mrd, int *arg);
105 #endif /* _SYS_MEMRANGE_H_ */