sys/dev/eisa/eisareg.h

   1 /*      $NetBSD: eisareg.h,v 1.5.24.1 2005/11/10 14:03:54 skrll Exp $   */
   2
   3 /*
   4  * Copyright (c) 1995, 1996 Christopher G. Demetriou
   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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by Christopher G. Demetriou
  18  *      for the NetBSD Project.
  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 #ifndef __DEV_EISA_EISAREG_H__
  35 #define __DEV_EISA_EISAREG_H__
  36
  37 /*
  38  * Register (etc.) descriptions for the EISA bus.
  39  *
  40  * Mostly culled from EISA chipset descriptions in:
  41  *      Intel Peripheral Components Databook (1992)
  42  */
  43
  44 /*
  45  * Slot I/O space size, and I/O address of a given slot.
  46  */
  47 #define EISA_SLOT_SIZE          0x1000
  48 #define EISA_SLOT_ADDR(s)       ((s) * EISA_SLOT_SIZE)
  49
  50 /*
  51  * Slot offsets for important/standard registers.
  52  */
  53 #define EISA_SLOTOFF_VID        0xc80           /* offset of vendor id regs */
  54 #define EISA_NVIDREGS           2
  55 #define EISA_SLOTOFF_PID        0xc82           /* offset of product id regs */
  56 #define EISA_NPIDREGS           2
  57
  58
  59 /*
  60  * EISA ID functions, used to manipulate and decode EISA ID registers.
  61  * ``Somebody was let out without adult supervision.''
  62  */
  63
  64 #define EISA_IDSTRINGLEN        8       /* length of ID string, incl. NUL */
  65
  66 /*
  67  * Vendor ID: three characters, encoded in 16 bits.
  68  *
  69  * EISA_VENDID_NODEV returns true if there's no device in the slot.
  70  * EISA_VENDID_IDDELAY returns true if there's a device in the slot,
  71  *      but that device hasn't been configured by system firmware.
  72  * EISA_VENDID_n returns the "n"th character of the vendor ID.
  73  */
  74 #define EISA_VENDID_NODEV(vid)                                          \
  75             (((vid)[0] & 0x80) != 0)
  76 #define EISA_VENDID_IDDELAY(vid)                                        \
  77             (((vid)[0] & 0xf0) == 0x70)
  78 #define EISA_VENDID_0(vid)                                              \
  79             ((((vid)[0] & 0x7c) >> 2) + '@')
  80 #define EISA_VENDID_1(vid)                                              \
  81             (((((vid)[0] & 0x03) << 3) | (((vid)[1] & 0xe0) >> 5)) + '@')
  82 #define EISA_VENDID_2(vid)                                              \
  83             (((vid)[1] & 0x1f) + '@')
  84
  85 /*
  86  * Product ID: four hex digits, encoded in 16 bits (normal, sort of).
  87  *
  88  * EISA_PRIDID_n returns the "n"th hex digit of the product ID.
  89  */
  90 #define EISA_PRODID_0(pid)                                              \
  91             (HEXDIGITS[(((pid)[0] >> 4) & 0xf)])
  92 #define EISA_PRODID_1(pid)                                              \
  93             (HEXDIGITS[(((pid)[0] >> 0) & 0xf)])
  94 #define EISA_PRODID_2(pid)                                              \
  95             (HEXDIGITS[(((pid)[1] >> 4) & 0xf)])
  96 #define EISA_PRODID_3(pid)                                              \
  97             (HEXDIGITS[(((pid)[1] >> 0) & 0xf)])
  98
  99 #endif /* !__DEV_EISA_EISAREG_H__ */