sys/arch/alpha/mcbus/mcbusvar.h

   1 /* $NetBSD: mcbusvar.h,v 1.4.6.2 2004/09/21 13:12:01 skrll Exp $ */
   2
   3 /*
   4  * Copyright (c) 1998 by Matthew Jacob
   5  * NASA AMES Research Center.
   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 immediately at the beginning of the file, without modification,
  13  *    this list of conditions, and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  * 3. The name of the author may not be used to endorse or promote products
  18  *    derived from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
  24  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 /*
  34  * Soft definitions for the MCBUS main system
  35  * bus found on AlphaServer 4100 systems.
  36  */
  37
  38 /*
  39  * The structure used to attach devices to the MCbus.
  40  */
  41 struct mcbus_dev_attach_args {
  42         u_int8_t        ma_gid;         /* GID of MCBUS (MCBUS #) */
  43         u_int8_t        ma_mid;         /* Module ID on MCBUS */
  44         u_int8_t        ma_type;        /* Module "type" */
  45         u_int8_t        ma_configured;  /* nonzero if configured */
  46 };
  47 #define MCBUS_GID_FROM_INSTANCE(unit)   (7 - unit)
  48
  49 /*
  50  * Bus-dependent structure for CPUs. This is dynamically allocated
  51  * for each CPU on the MCbus, and glued into the cpu_softc as sc_busdep,
  52  * if there is such a beast available. Otherwise, a single global version
  53  * is used so that the MCPCIA configuration code can determine toads
  54  * like module id and bcache size of the master CPU.
  55  */
  56 struct mcbus_cpu_busdep {
  57         u_int8_t        mcbus_cpu_mid;  /* MCbus Module ID */
  58         u_int8_t        mcbus_bcache;   /* BCache on this CPU */
  59         u_int8_t        mcbus_valid;
  60 };
  61
  62 #define MCBUS_CPU_BCACHE_0MB    0
  63 #define MCBUS_CPU_BCACHE_1MB    1
  64 #define MCBUS_CPU_BCACHE_4MB    2
  65
  66 /*
  67  * "types"
  68  */
  69 #define MCBUS_TYPE_RES  0
  70 #define MCBUS_TYPE_UNK  1
  71 #define MCBUS_TYPE_MEM  2
  72 #define MCBUS_TYPE_CPU  3
  73 #define MCBUS_TYPE_PCI  4
  74
  75 #ifdef _KERNEL
  76 extern struct mcbus_cpu_busdep mcbus_primary;
  77 extern const int mcbus_mcpcia_probe_order[];
  78 #endif