1 /* 2 * Memory range attribute operations, peformed on /dev/mem 3 * 4 * $FreeBSD$ 5 */ 6 7 /* Memory range attributes */ 8 #define MDF_UNCACHEABLE (1<<0) /* region not cached */ 9 #define MDF_WRITECOMBINE (1<<1) /* region supports "write combine" action */ 10 #define MDF_WRITETHROUGH (1<<2) /* write-through cached */ 11 #define MDF_WRITEBACK (1<<3) /* write-back cached */ 12 #define MDF_WRITEPROTECT (1<<4) /* read-only region */ 13 #define MDF_UNKNOWN (1<<5) /* any state we don't understand */ 14 #define MDF_ATTRMASK (0x00ffffff) 15 16 #define MDF_FIXBASE (1<<24) /* fixed base */ 17 #define MDF_FIXLEN (1<<25) /* fixed length */ 18 #define MDF_FIRMWARE (1<<26) /* set by firmware (XXX not useful?) */ 19 #define MDF_ACTIVE (1<<27) /* currently active */ 20 #define MDF_BOGUS (1<<28) /* we don't like it */ 21 #define MDF_FIXACTIVE (1<<29) /* can't be turned off */ 22 #define MDF_BUSY (1<<30) /* range is in use */ 23 #define MDF_FORCE (1<<31) /* force risky changes */ 24 25 struct mem_range_desc 26 { 27 u_int64_t mr_base; 28 u_int64_t mr_len; 29 int mr_flags; 30 char mr_owner[8]; 31 }; 32 33 struct mem_range_op 34 { 35 struct mem_range_desc *mo_desc; 36 int mo_arg[2]; 37 #define MEMRANGE_SET_UPDATE 0 38 #define MEMRANGE_SET_REMOVE 1 39 /* XXX want a flag that says "set and undo when I exit" */ 40 }; 41 42 #define MEMRANGE_GET _IOWR('m', 50, struct mem_range_op) 43 #define MEMRANGE_SET _IOW('m', 51, struct mem_range_op) 44 45 #ifdef _KERNEL 46 47 MALLOC_DECLARE(M_MEMDESC); 48 49 struct mem_range_softc; 50 struct mem_range_ops 51 { 52 void (*init)(struct mem_range_softc *sc); 53 int (*set)(struct mem_range_softc *sc, struct mem_range_desc *mrd, int *arg); 54 void (*initAP)(struct mem_range_softc *sc); 55 void (*reinit)(struct mem_range_softc *sc); 56 }; 57 58 struct mem_range_softc 59 { 60 struct mem_range_ops *mr_op; 61 int mr_cap; 62 int mr_ndesc; 63 struct mem_range_desc *mr_desc; 64 }; 65 66 extern struct mem_range_softc mem_range_softc; 67 68 extern int mem_range_attr_get(struct mem_range_desc *mrd, int *arg); 69 extern int mem_range_attr_set(struct mem_range_desc *mrd, int *arg); 70 71 #endif 72