/* $OpenBSD: memrange.h,v 1.10 2015/08/18 20:19:32 miod Exp $ */ /*- * Copyright (c) 1999 Michael Smith <msmith@freebsd.org> * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Memory range attribute operations, performed on /dev/mem */ /* Memory range attributes */ #define MDF_UNCACHEABLE (1<<0) /* region not cached */ #define MDF_WRITECOMBINE (1<<1) /* region supports "write combine" action */ #define MDF_WRITETHROUGH (1<<2) /* write-through cached */ #define MDF_WRITEBACK (1<<3) /* write-back cached */ #define MDF_WRITEPROTECT (1<<4) /* read-only region */ #define MDF_UNKNOWN (1<<5) /* any state we don't understand */ #define MDF_ATTRMASK (0x00ffffff) #define MDF_FIXBASE (1<<24) /* fixed base */ #define MDF_FIXLEN (1<<25) /* fixed length */ #define MDF_FIRMWARE (1<<26) /* set by firmware (XXX not useful?) */ #define MDF_ACTIVE (1<<27) /* currently active */ #define MDF_BOGUS (1<<28) /* we don't like it */ #define MDF_FIXACTIVE (1<<29) /* can't be turned off */ #define MDF_FORCE (1<<31) /* force risky changes */ struct mem_range_desc { u_int64_t mr_base; u_int64_t mr_len; int mr_flags; char mr_owner[8]; }; struct mem_range_op { struct mem_range_desc *mo_desc; int mo_arg[2]; #define MEMRANGE_SET_UPDATE 0 #define MEMRANGE_SET_REMOVE 1 /* XXX want a flag that says "set and undo when I exit" */ }; #define MEMRANGE_GET _IOWR('m', 50, struct mem_range_op) #define MEMRANGE_SET _IOW('m', 51, struct mem_range_op) /* Offset indicating a write combining mapping is requested. */ #define MEMRANGE_WC_RANGE 0x4000000000000000ULL #ifdef _KERNEL struct mem_range_softc; struct mem_range_ops { void (*init)(struct mem_range_softc *sc); int (*set)(struct mem_range_softc *sc, struct mem_range_desc *mrd, int *arg); void (*initAP)(struct mem_range_softc *sc); void (*reload)(struct mem_range_softc *sc); }; struct mem_range_softc { struct mem_range_ops *mr_op; int mr_cap; int mr_ndesc; struct mem_range_desc *mr_desc; }; extern struct mem_range_softc mem_range_softc; __BEGIN_DECLS extern void mem_range_attach(void); extern int mem_range_attr_get(struct mem_range_desc *mrd, int *arg); extern int mem_range_attr_set(struct mem_range_desc *mrd, int *arg); extern void mem_range_AP_init(void); extern void mem_range_reload(void); __END_DECLS #endif /* _KERNEL */
