Annotation of sys/sys/memrange.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: memrange.h,v 1.4 2002/10/14 21:01:01 matthieu Exp $ */
! 2: /*-
! 3: * Copyright (c) 1999 Michael Smith <msmith@freebsd.org>
! 4: * All rights reserved.
! 5: *
! 6: * Redistribution and use in source and binary forms, with or without
! 7: * modification, are permitted provided that the following conditions
! 8: * are met:
! 9: * 1. Redistributions of source code must retain the above copyright
! 10: * notice, this list of conditions and the following disclaimer.
! 11: * 2. Redistributions in binary form must reproduce the above copyright
! 12: * notice, this list of conditions and the following disclaimer in the
! 13: * documentation and/or other materials provided with the distribution.
! 14: *
! 15: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
! 16: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 17: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 18: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
! 19: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 20: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 21: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 22: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 23: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 24: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 25: * SUCH DAMAGE.
! 26: */
! 27: /*
! 28: * Memory range attribute operations, peformed on /dev/mem
! 29: */
! 30:
! 31: /* Memory range attributes */
! 32: #define MDF_UNCACHEABLE (1<<0) /* region not cached */
! 33: #define MDF_WRITECOMBINE (1<<1) /* region supports "write combine" action */
! 34: #define MDF_WRITETHROUGH (1<<2) /* write-through cached */
! 35: #define MDF_WRITEBACK (1<<3) /* write-back cached */
! 36: #define MDF_WRITEPROTECT (1<<4) /* read-only region */
! 37: #define MDF_UNKNOWN (1<<5) /* any state we don't understand */
! 38: #define MDF_ATTRMASK (0x00ffffff)
! 39:
! 40: #define MDF_FIXBASE (1<<24) /* fixed base */
! 41: #define MDF_FIXLEN (1<<25) /* fixed length */
! 42: #define MDF_FIRMWARE (1<<26) /* set by firmware (XXX not useful?) */
! 43: #define MDF_ACTIVE (1<<27) /* currently active */
! 44: #define MDF_BOGUS (1<<28) /* we don't like it */
! 45: #define MDF_FIXACTIVE (1<<29) /* can't be turned off */
! 46: #define MDF_BUSY (1<<30) /* range is in use */
! 47: #define MDF_FORCE (1<<31) /* force risky changes */
! 48:
! 49: struct mem_range_desc
! 50: {
! 51: u_int64_t mr_base;
! 52: u_int64_t mr_len;
! 53: int mr_flags;
! 54: char mr_owner[8];
! 55: };
! 56:
! 57: struct mem_range_op
! 58: {
! 59: struct mem_range_desc *mo_desc;
! 60: int mo_arg[2];
! 61: #define MEMRANGE_SET_UPDATE 0
! 62: #define MEMRANGE_SET_REMOVE 1
! 63: /* XXX want a flag that says "set and undo when I exit" */
! 64: };
! 65:
! 66: #define MEMRANGE_GET _IOWR('m', 50, struct mem_range_op)
! 67: #define MEMRANGE_SET _IOW('m', 51, struct mem_range_op)
! 68:
! 69: #ifdef _KERNEL
! 70:
! 71: struct mem_range_softc;
! 72: struct mem_range_ops
! 73: {
! 74: void (*init)(struct mem_range_softc *sc);
! 75: int (*set)(struct mem_range_softc *sc, struct mem_range_desc *mrd, int *arg);
! 76: void (*initAP)(struct mem_range_softc *sc);
! 77: };
! 78:
! 79: struct mem_range_softc
! 80: {
! 81: struct mem_range_ops *mr_op;
! 82: int mr_cap;
! 83: int mr_ndesc;
! 84: struct mem_range_desc *mr_desc;
! 85: };
! 86:
! 87: extern struct mem_range_softc mem_range_softc;
! 88:
! 89: __BEGIN_DECLS
! 90: extern int mem_range_attr_get(struct mem_range_desc *mrd, int *arg);
! 91: extern int mem_range_attr_set(struct mem_range_desc *mrd, int *arg);
! 92: extern void mem_range_AP_init(void);
! 93: __END_DECLS
! 94: #endif
! 95:
CVSweb