sys/arch/sgimips/gio/gioreg.h

   1 /*      $NetBSD: gioreg.h,v 1.3 2005/12/11 12:18:53 christos Exp $      */
   2
   3 /*
   4  * Copyright (c) 2003 Ilpo Ruotsalainen
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. The name of the author may not be used to endorse or promote products
  16  *    derived from this software without specific prior written permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  *
  29  * <<Id: LICENSE_GC,v 1.1 2001/10/01 23:24:05 cgd Exp>>
  30  */
  31
  32 #ifndef _ARCH_SGIMIPS_GIO_GIOREG_H_
  33 #define _ARCH_SGIMIPS_GIO_GIOREG_H_
  34
  35 /*
  36  * The GIO Product Identification Word is the first word (1 or 4 bytes)
  37  * in each GIO device's address space. It is the same format for GIO32,
  38  * GIO32-bis, and GIO64 devices. The macros below extract the following
  39  * fields:
  40  *
  41  * Bits:
  42  *    0-6 Product ID Code
  43  *      7 Product Identification Word size (0: 8 bits, 1: 32 bits)
  44  *   8-15 Product Revision
  45  *     16 GIO Interface Size (0: 32, 1: 64; NB: GIO64 devices may be 32)
  46  *     17 Rom Present (1: present)
  47  *  18-31 Manufacturer-specific Code
  48  *
  49  * The upper three bytes containing the Product Revision, GIO Interface
  50  * Size, Rom Presence indicator, and Manufacturer-specific Code are only
  51  * valid if bit 7 is set in the Product ID Word. If it is not set, all
  52  * values default to 0.
  53  *
  54  * If the Rom Present bit is set, the three words after the Product ID are
  55  * reserved for three ROM registers:
  56  *      Board Serial Number Register    (base_address + 0x4)
  57  *      ROM Index Register              (base_address + 0x8)
  58  *      ROM Read Register               (base_address + 0xc)
  59  *
  60  * The ROM Index Register is initialised by the CPU to 0 and incremented by
  61  * 4 on each read from the ROM Read Register. The Board Serial Number
  62  * Register contains a manufacturer-specific serial number.
  63  */
  64
  65 #define GIO_PRODUCT_32BIT_ID(x)         ((x) & 0x80)
  66 #define GIO_PRODUCT_PRODUCTID(x)        ((x) & 0x7f)
  67 #define GIO_PRODUCT_REVISION(x)         (((x) >> 8) & 0xff)
  68 #define GIO_PRODUCT_IS_64BIT(x)         (!!((x) & 0x8000))
  69 #define GIO_PRODUCT_HAS_ROM(x)          (!!((x) & 0x10000))
  70 #define GIO_PRODUCT_MANUCODE(x)         ((x) >> 18)
  71
  72 #endif