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