headers/private/kernel/arch/sparc/promdev.h

   1 /*      $OpenBSD: promdev.h,v 1.1 1997/09/17 10:46:19 downsj Exp $      */
   2 /*      $NetBSD: promdev.h,v 1.3 1995/09/18 21:31:50 pk Exp $ */
   3
   4 /*
   5  * Copyright (c) 1993 Paul Kranenburg
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by Paul Kranenburg.
  19  * 4. The name of the author may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <machine/bsd_openprom.h>
  35
  36 struct promdata {
  37         int     fd;                     /* Openboot descriptor */
  38         struct  saioreq *si;            /* Oldmon IO request */
  39         int     devtype;                /* Kind of device we're booting from */
  40 #define DT_BLOCK        1
  41 #define DT_NET          2
  42 #define DT_BYTE         3
  43         /* Hooks for netif.c */
  44         int     (*xmit) __P((struct promdata *, void *, size_t));
  45         int     (*recv) __P((struct promdata *, void *, size_t));
  46 };
  47
  48 #define LOADADDR        ((caddr_t)0x4000)
  49 #define DDB_MAGIC0      ( ('D'<<24) | ('D'<<16) | ('B'<<8) | ('0') )
  50 #define DDB_MAGIC1      ( ('D'<<24) | ('D'<<16) | ('B'<<8) | ('1') )
  51 #define DDB_MAGIC       DDB_MAGIC0
  52
  53 extern struct promvec   *promvec;
  54 extern char     *prom_bootdevice;
  55 extern char     *prom_bootfile;
  56 extern int      prom_boothow;
  57 extern int      hz;
  58 extern int      cputyp, nbpg, pgofset, pgshift;
  59 extern int      debug;
  60
  61 extern void     prom_init __P((void));
  62
  63 /* Note: dvma_*() routines are for "oldmon" machines only */
  64 extern char     *dvma_mapin __P((char *, size_t));
  65 extern char     *dvma_mapout __P((char *, size_t));
  66 extern char     *dvma_alloc __P((int));
  67
  68 /*
  69  * duplicates from pmap.c for mapping device on "oldmon" machines.
  70  */
  71 #include <sparc/asm.h>
  72
  73 #define getcontext()            lduba(AC_CONTEXT, ASI_CONTROL)
  74 #define setcontext(c)           stba(AC_CONTEXT, ASI_CONTROL, c)
  75 #define getsegmap(va)           (cputyp == CPU_SUN4C \
  76                                         ? lduba(va, ASI_SEGMAP) \
  77                                         : lduha(va, ASI_SEGMAP))
  78 #define setsegmap(va, pmeg)     (cputyp == CPU_SUN4C \
  79                                         ? stba(va, ASI_SEGMAP, pmeg) \
  80                                         : stha(va, ASI_SEGMAP, pmeg))
  81 #define getregmap(va)           ((unsigned)lduha(va+2, ASI_REGMAP) >> 8)
  82 #define setregmap(va, smeg)     stha(va+2, ASI_REGMAP, (smeg << 8))
  83
  84 #define getpte(va)              lda(va, ASI_PTE)
  85 #define setpte(va, pte)         sta(va, ASI_PTE, pte)
  86