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 1.4 2006/12/17 20:07:33 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 #ifndef _SYS_IOCCOM_H_ 16 #include <sys/ioccom.h> 17 #endif 18 19 #ifdef _KERNEL 20 21 #ifndef _SYS_MALLOC_H_ 22 #include <sys/malloc.h> 23 #endif 24 25 #endif 26 27 /* Memory range attributes */ 28 #define MDF_UNCACHEABLE (1<<0) /* region not cached */ 29 #define MDF_WRITECOMBINE (1<<1) /* region supports "write combine" action */ 30 #define MDF_WRITETHROUGH (1<<2) /* write-through cached */ 31 #define MDF_WRITEBACK (1<<3) /* write-back cached */ 32 #define MDF_WRITEPROTECT (1<<4) /* read-only region */ 33 #define MDF_UNKNOWN (1<<5) /* any state we don't understand */ 34 #define MDF_ATTRMASK (0x00ffffff) 35 36 #define MDF_FIXBASE (1<<24) /* fixed base */ 37 #define MDF_FIXLEN (1<<25) /* fixed length */ 38 #define MDF_FIRMWARE (1<<26) /* set by firmware (XXX not useful?) */ 39 #define MDF_ACTIVE (1<<27) /* currently active */ 40 #define MDF_BOGUS (1<<28) /* we don't like it */ 41 #define MDF_FIXACTIVE (1<<29) /* can't be turned off */ 42 #define MDF_BUSY (1<<30) /* range is in use */ 43 #define MDF_FORCE (1<<31) /* force risky changes */ 44 45 struct mem_range_desc 46 { 47 u_int64_t mr_base; 48 u_int64_t mr_len; 49 int mr_flags; 50 char mr_owner[8]; 51 }; 52 53 struct mem_range_op 54 { 55 struct mem_range_desc *mo_desc; 56 int mo_arg[2]; 57 #define MEMRANGE_SET_UPDATE 0 58 #define MEMRANGE_SET_REMOVE 1 59 /* XXX want a flag that says "set and undo when I exit" */ 60 }; 61 62 #define MEMRANGE_GET _IOWR('m', 50, struct mem_range_op) 63 #define MEMRANGE_SET _IOW('m', 51, struct mem_range_op) 64 65 #ifdef _KERNEL 66 67 MALLOC_DECLARE(M_MEMDESC); 68 69 struct mem_range_softc; 70 struct mem_range_ops 71 { 72 void (*init)(struct mem_range_softc *sc); 73 int (*set)(struct mem_range_softc *sc, struct mem_range_desc *mrd, int *arg); 74 void (*initAP)(struct mem_range_softc *sc); 75 void (*set_iopl)(struct mem_range_softc *sc); 76 void (*clr_iopl)(struct mem_range_softc *sc); 77 }; 78 79 struct mem_range_softc 80 { 81 struct mem_range_ops *mr_op; 82 int mr_cap; 83 int mr_ndesc; 84 struct mem_range_desc *mr_desc; 85 }; 86 87 extern struct mem_range_softc mem_range_softc; 88 89 extern int mem_range_attr_get(struct mem_range_desc *mrd, int *arg); 90 extern int mem_range_attr_set(struct mem_range_desc *mrd, int *arg); 91 extern void mem_range_AP_init(void); 92 extern int cpu_set_iopl(void); 93 extern int cpu_clr_iopl(void); 94 #endif 95 96 #endif 97