1 2 /* 3 * Memory range attribute operations, peformed on /dev/mem 4 * 5 * $FreeBSD: src/sys/sys/memrange.h,v 1.4.2.2 2002/09/16 21:58:37 dwmalone Exp $ 6 * $DragonFly: src/sys/sys/memrange.h,v 1.3 2006/05/20 02:42:13 dillon Exp $ 7 */ 8 9 #ifndef _SYS_MEMRANGE_H_ 10 #define _SYS_MEMRANGE_H_ 11 12 #ifndef _SYS_TYPES_H_ 13 #include <sys/types.h> 14 #endif 15 16 #ifdef _KERNEL 17 18 #ifndef _SYS_MALLOC_H_ 19 #include <sys/malloc.h> 20 #endif 21 22 #endif 23 24 /* Memory range attributes */ 25 #define MDF_UNCACHEABLE (1<<0) /* region not cached */ 26 #define MDF_WRITECOMBINE (1<<1) /* region supports "write combine" action */ 27 #define MDF_WRITETHROUGH (1<<2) /* write-through cached */ 28 #define MDF_WRITEBACK (1<<3) /* write-back cached */ 29 #define MDF_WRITEPROTECT (1<<4) /* read-only region */ 30 #define MDF_UNKNOWN (1<<5) /* any state we don't understand */ 31 #define MDF_ATTRMASK (0x00ffffff) 32 33 #define MDF_FIXBASE (1<<24) /* fixed base */ 34 #define MDF_FIXLEN (1<<25) /* fixed length */ 35 #define MDF_FIRMWARE (1<<26) /* set by firmware (XXX not useful?) */ 36 #define MDF_ACTIVE (1<<27) /* currently active */ 37 #define MDF_BOGUS (1<<28) /* we don't like it */ 38 #define MDF_FIXACTIVE (1<<29) /* can't be turned off */ 39 #define MDF_BUSY (1<<30) /* range is in use */ 40 #define MDF_FORCE (1<<31) /* force risky changes */ 41 42 struct mem_range_desc 43 { 44 u_int64_t mr_base; 45 u_int64_t mr_len; 46 int mr_flags; 47 char mr_owner[8]; 48 }; 49 50 struct mem_range_op 51 { 52 struct mem_range_desc *mo_desc; 53 int mo_arg[2]; 54 #define MEMRANGE_SET_UPDATE 0 55 #define MEMRANGE_SET_REMOVE 1 56 /* XXX want a flag that says "set and undo when I exit" */ 57 }; 58 59 #define MEMRANGE_GET _IOWR('m', 50, struct mem_range_op) 60 #define MEMRANGE_SET _IOW('m', 51, struct mem_range_op) 61 62 #ifdef _KERNEL 63 64 MALLOC_DECLARE(M_MEMDESC); 65 66 struct mem_range_softc; 67 struct mem_range_ops 68 { 69 void (*init)(struct mem_range_softc *sc); 70 int (*set)(struct mem_range_softc *sc, struct mem_range_desc *mrd, int *arg); 71 void (*initAP)(struct mem_range_softc *sc); 72 }; 73 74 struct mem_range_softc 75 { 76 struct mem_range_ops *mr_op; 77 int mr_cap; 78 int mr_ndesc; 79 struct mem_range_desc *mr_desc; 80 }; 81 82 extern struct mem_range_softc mem_range_softc; 83 84 extern int mem_range_attr_get(struct mem_range_desc *mrd, int *arg); 85 extern int mem_range_attr_set(struct mem_range_desc *mrd, int *arg); 86 extern void mem_range_AP_init(void); 87 #endif 88 89 #endif 90