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