1 /* 2 * Memory range attribute operations, performed on /dev/mem 3 * 4 * $FreeBSD$ 5 */ 6 7 #ifndef _SYS_MEMRANGE_H_ 8 #define _SYS_MEMRANGE_H_ 9 10 #include <sys/ioccom.h> 11 12 /* Memory range attributes */ 13 #define MDF_UNCACHEABLE (1<<0) /* region not cached */ 14 #define MDF_WRITECOMBINE (1<<1) /* region supports "write combine" action */ 15 #define MDF_WRITETHROUGH (1<<2) /* write-through cached */ 16 #define MDF_WRITEBACK (1<<3) /* write-back cached */ 17 #define MDF_WRITEPROTECT (1<<4) /* read-only region */ 18 #define MDF_UNKNOWN (1<<5) /* any state we don't understand */ 19 #define MDF_ATTRMASK (0x00ffffff) 20 21 #define MDF_FIXBASE (1<<24) /* fixed base */ 22 #define MDF_FIXLEN (1<<25) /* fixed length */ 23 #define MDF_FIRMWARE (1<<26) /* set by firmware (XXX not useful?) */ 24 #define MDF_ACTIVE (1<<27) /* currently active */ 25 #define MDF_BOGUS (1<<28) /* we don't like it */ 26 #define MDF_FIXACTIVE (1<<29) /* can't be turned off */ 27 #define MDF_BUSY (1<<30) /* range is in use */ 28 #define MDF_FORCE (1<<31) /* force risky changes */ 29 30 struct mem_range_desc 31 { 32 u_int64_t mr_base; 33 u_int64_t mr_len; 34 int mr_flags; 35 char mr_owner[8]; 36 }; 37 38 struct mem_range_op 39 { 40 struct mem_range_desc *mo_desc; 41 int mo_arg[2]; 42 #define MEMRANGE_SET_UPDATE 0 43 #define MEMRANGE_SET_REMOVE 1 44 /* XXX want a flag that says "set and undo when I exit" */ 45 }; 46 47 #define MEMRANGE_GET _IOWR('m', 50, struct mem_range_op) 48 #define MEMRANGE_SET _IOW('m', 51, struct mem_range_op) 49 50 #define ME_STATE_INVALID 0 51 #define ME_STATE_VALID 1 52 #define ME_STATE_MAPPED 2 53 54 struct mem_extract { 55 uint64_t me_vaddr; 56 uint64_t me_paddr; 57 int me_domain; 58 int me_state; 59 uint64_t pad1[5]; 60 }; 61 62 #define MEM_EXTRACT_PADDR _IOWR('m', 52, struct mem_extract) 63 64 struct mem_livedump_arg { 65 int fd; 66 int flags; 67 uint8_t compression; 68 uint8_t pad1[7]; 69 uint64_t pad2[2]; 70 }; 71 72 #define MEM_KERNELDUMP _IOW('m', 53, struct mem_livedump_arg) 73 74 #ifdef _KERNEL 75 76 MALLOC_DECLARE(M_MEMDESC); 77 78 struct mem_range_softc; 79 struct mem_range_ops 80 { 81 void (*init)(struct mem_range_softc *sc); 82 int (*set)(struct mem_range_softc *sc, struct mem_range_desc *mrd, int *arg); 83 void (*initAP)(struct mem_range_softc *sc); 84 void (*reinit)(struct mem_range_softc *sc); 85 }; 86 87 struct mem_range_softc 88 { 89 struct mem_range_ops *mr_op; 90 int mr_cap; 91 int mr_ndesc; 92 struct mem_range_desc *mr_desc; 93 }; 94 95 extern struct mem_range_softc mem_range_softc; 96 97 extern void mem_range_init(void); 98 extern void mem_range_destroy(void); 99 100 extern int mem_range_attr_get(struct mem_range_desc *mrd, int *arg); 101 extern int mem_range_attr_set(struct mem_range_desc *mrd, int *arg); 102 103 #endif /* _KERNEL */ 104 105 #endif /* _SYS_MEMRANGE_H_ */ 106