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_ */