1 /* 2 * Memory range attribute operations, performed on /dev/mem 3 */ 4 5 #ifndef _SYS_MEMRANGE_H_ 6 #define _SYS_MEMRANGE_H_ 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 #define ME_STATE_INVALID 0 47 #define ME_STATE_VALID 1 48 #define ME_STATE_MAPPED 2 49 50 struct mem_extract { 51 uint64_t me_vaddr; 52 uint64_t me_paddr; 53 int me_domain; 54 int me_state; 55 uint64_t pad1[5]; 56 }; 57 58 #define MEM_EXTRACT_PADDR _IOWR('m', 52, struct mem_extract) 59 60 struct mem_livedump_arg { 61 int fd; 62 int flags; 63 uint8_t compression; 64 uint8_t pad1[7]; 65 uint64_t pad2[2]; 66 }; 67 68 #define MEM_KERNELDUMP _IOW('m', 53, struct mem_livedump_arg) 69 70 #ifdef _KERNEL 71 72 MALLOC_DECLARE(M_MEMDESC); 73 74 struct mem_range_softc; 75 struct mem_range_ops 76 { 77 void (*init)(struct mem_range_softc *sc); 78 int (*set)(struct mem_range_softc *sc, struct mem_range_desc *mrd, int *arg); 79 void (*initAP)(struct mem_range_softc *sc); 80 void (*reinit)(struct mem_range_softc *sc); 81 }; 82 83 struct mem_range_softc 84 { 85 struct mem_range_ops *mr_op; 86 int mr_cap; 87 int mr_ndesc; 88 struct mem_range_desc *mr_desc; 89 }; 90 91 extern struct mem_range_softc mem_range_softc; 92 93 extern void mem_range_init(void); 94 extern void mem_range_destroy(void); 95 96 extern int mem_range_attr_get(struct mem_range_desc *mrd, int *arg); 97 extern int mem_range_attr_set(struct mem_range_desc *mrd, int *arg); 98 99 #endif /* _KERNEL */ 100 101 #endif /* _SYS_MEMRANGE_H_ */ 102