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      1 /*	$NetBSD: neoreg.h,v 1.1 2000/11/05 06:43:46 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1999 Cameron Grant <gandalf (at) vilnya.demon.co.uk>
      5  * All rights reserved.
      6  *
      7  * Derived from the public domain Linux driver
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, 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  *
     18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHERIN CONTRACT, STRICT
     26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF
     28  * SUCH DAMAGE.
     29  *
     30  * OpenBSD: neoreg.h,v 1.1 2000/04/13 00:10:52 csapuntz Exp
     31  */
     32 
     33 #ifndef _DEV_PCI_NEOREG_H_
     34 #define _DEV_PCI_NEOREG_H_
     35 
     36 /* The BIOS signature. */
     37 #define NM_SIGNATURE 0x4e4d0000
     38 /* Signature mask. */
     39 #define NM_SIG_MASK 0xffff0000
     40 
     41 /* Size of the second memory area. */
     42 #define NM_PORT2_SIZE 4096
     43 
     44 /* The base offset of the mixer in the second memory area. */
     45 #define NM_MIXER_OFFSET 0x600
     46 
     47 /* The maximum size of a coefficient entry. */
     48 #define NM_MAX_COEFFICIENT 0x5000
     49 
     50 /* The interrupt register. */
     51 #define NM_INT_REG 0xa04
     52 /* And its bits. */
     53 #define NM_PLAYBACK_INT 0x40
     54 #define NM_RECORD_INT 0x100
     55 #define NM_MISC_INT_1 0x4000
     56 #define NM_MISC_INT_2 0x1
     57 
     58 /* The AV's "mixer ready" status bit and location. */
     59 #define NM_MIXER_STATUS_OFFSET 0xa04
     60 #define NM_MIXER_READY_MASK 0x0800
     61 
     62 /*
     63  * For the ZX.  It uses the same interrupt register, but it holds 32
     64  * bits instead of 16.
     65  */
     66 #define NM2_PLAYBACK_INT 0x10000
     67 #define NM2_RECORD_INT 0x80000
     68 #define NM2_MISC_INT_1 0x8
     69 #define NM2_MISC_INT_2 0x2
     70 
     71 /* The ZX's "mixer ready" status bit and location. */
     72 #define NM2_MIXER_STATUS_OFFSET 0xa06
     73 #define NM2_MIXER_READY_MASK 0x0800
     74 
     75 /* The playback registers start from here. */
     76 #define NM_PLAYBACK_REG_OFFSET 0x0
     77 /* The record registers start from here. */
     78 #define NM_RECORD_REG_OFFSET 0x200
     79 
     80 /* The rate register is located 2 bytes from the start of the register area. */
     81 #define NM_RATE_REG_OFFSET 2
     82 
     83 /* Mono/stereo flag, number of bits on playback, and rate mask. */
     84 #define NM_RATE_STEREO 1
     85 #define NM_RATE_BITS_16 2
     86 #define NM_RATE_MASK 0xf0
     87 
     88 /* Playback enable register. */
     89 #define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1)
     90 #define NM_PLAYBACK_ENABLE_FLAG 1
     91 #define NM_PLAYBACK_ONESHOT 2
     92 #define NM_PLAYBACK_FREERUN 4
     93 
     94 /* Mutes the audio output. */
     95 #define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18)
     96 #define NM_AUDIO_MUTE_LEFT 0x8000
     97 #define NM_AUDIO_MUTE_RIGHT 0x0080
     98 #define NM_AUDIO_MUTE_BOTH 0x8080
     99 
    100 /* Recording enable register. */
    101 #define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0)
    102 #define NM_RECORD_ENABLE_FLAG 1
    103 #define NM_RECORD_FREERUN 2
    104 
    105 #define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4)
    106 #define NM_RBUFFER_END   (NM_RECORD_REG_OFFSET + 0x10)
    107 #define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc)
    108 #define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8)
    109 
    110 #define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4)
    111 #define NM_PBUFFER_END   (NM_PLAYBACK_REG_OFFSET + 0x14)
    112 #define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc)
    113 #define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8)
    114 
    115 #endif /* _DEV_PCI_NEOREG_H_ */
    116