Home | History | Annotate | Line # | Download | only in gio 
      1 /*	$NetBSD: gioreg.h,v 1.4 2006/08/31 00:01:10 rumble 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
     73