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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: