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_ */