1 /* 2 * Memory range attribute operations, peformed on /dev/mem 3 * 4 * $FreeBSD: src/sys/sys/memrange.h,v 1.4.2.2 2002/09/16 21:58:37 dwmalone Exp $ 5 * $DragonFly: src/sys/sys/memrange.h,v 1.2 2003/06/17 04:28:58 dillon Exp $ 6 */ 7 8 /* Memory range attributes */ 9 #define MDF_UNCACHEABLE (1<<0) /* region not cached */ 10 #define MDF_WRITECOMBINE (1<<1) /* region supports "write combine" action */ 11 #define MDF_WRITETHROUGH (1<<2) /* write-through cached */ 12 #define MDF_WRITEBACK (1<<3) /* write-back cached */ 13 #define MDF_WRITEPROTECT (1<<4) /* read-only region */ 14 #define MDF_UNKNOWN (1<<5) /* any state we don't understand */ 15 #define MDF_ATTRMASK (0x00ffffff) 16 17 #define MDF_FIXBASE (1<<24) /* fixed base */ 18 #define MDF_FIXLEN (1<<25) /* fixed length */ 19 #define MDF_FIRMWARE (1<<26) /* set by firmware (XXX not useful?) */ 20 #define MDF_ACTIVE (1<<27) /* currently active */ 21 #define MDF_BOGUS (1<<28) /* we don't like it */ 22 #define MDF_FIXACTIVE (1<<29) /* can't be turned off */ 23 #define MDF_BUSY (1<<30) /* range is in use */ 24 #define MDF_FORCE (1<<31) /* force risky changes */ 25 26 struct mem_range_desc 27 { 28 u_int64_t mr_base; 29 u_int64_t mr_len; 30 int mr_flags; 31 char mr_owner[8]; 32 }; 33 34 struct mem_range_op 35 { 36 struct mem_range_desc *mo_desc; 37 int mo_arg[2]; 38 #define MEMRANGE_SET_UPDATE 0 39 #define MEMRANGE_SET_REMOVE 1 40 /* XXX want a flag that says "set and undo when I exit" */ 41 }; 42 43 #define MEMRANGE_GET _IOWR('m', 50, struct mem_range_op) 44 #define MEMRANGE_SET _IOW('m', 51, struct mem_range_op) 45 46 #ifdef _KERNEL 47 48 MALLOC_DECLARE(M_MEMDESC); 49 50 struct mem_range_softc; 51 struct mem_range_ops 52 { 53 void (*init)(struct mem_range_softc *sc); 54 int (*set)(struct mem_range_softc *sc, struct mem_range_desc *mrd, int *arg); 55 void (*initAP)(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 extern void mem_range_AP_init(void); 71 #endif 72 73