FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/pci/neomagic.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
      * All rights reserved.
      *
      * Derived from the public domain Linux driver
      *
      * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHERIN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THEPOSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     */
    
    #ifndef _NM256_H_
    #define _NM256_H_
    
    /* The BIOS signature. */
    #define NM_SIGNATURE 0x4e4d0000
    /* Signature mask. */
    #define NM_SIG_MASK 0xffff0000
    
    /* Size of the second memory area. */
    #define NM_PORT2_SIZE 4096
    
    /* The base offset of the mixer in the second memory area. */
    #define NM_MIXER_OFFSET 0x600
    
    /* The base offset for the AC97 test */
    #define NM_MIXER_PRESENCE 0xa06
    #define NM_PRESENCE_MASK  0x050
    #define NM_PRESENCE_VALUE 0x040
    
    /* The maximum size of a coefficient entry. */
    #define NM_MAX_COEFFICIENT 0x5000
    
    /* The interrupt register. */
    #define NM_INT_REG 0xa04
    /* And its bits. */
    #define NM_PLAYBACK_INT 0x40
    #define NM_RECORD_INT 0x100
    #define NM_MISC_INT_1 0x4000
    #define NM_MISC_INT_2 0x1
    
    /* The AV's "mixer ready" status bit and location. */
    #define NM_MIXER_STATUS_OFFSET 0xa04
    #define NM_MIXER_READY_MASK 0x0800
    
    /*
     * For the ZX.  It uses the same interrupt register, but it holds 32
     * bits instead of 16.
     */
    #define NM2_PLAYBACK_INT 0x10000
    #define NM2_RECORD_INT 0x80000
    #define NM2_MISC_INT_1 0x8
    #define NM2_MISC_INT_2 0x2
    
    /* The ZX's "mixer ready" status bit and location. */
    #define NM2_MIXER_STATUS_OFFSET 0xa06
    #define NM2_MIXER_READY_MASK 0x0800
    
    /* The playback registers start from here. */
    #define NM_PLAYBACK_REG_OFFSET 0x0
    /* The record registers start from here. */
    #define NM_RECORD_REG_OFFSET 0x200
    
    /* The rate register is located 2 bytes from the start of the register area. */
    #define NM_RATE_REG_OFFSET 2
    
    /* Mono/stereo flag, number of bits on playback, and rate mask. */
    #define NM_RATE_STEREO 1
    #define NM_RATE_BITS_16 2
    #define NM_RATE_MASK 0xf0
    
    /* Playback enable register. */
    #define NM_PLAYBACK_ENABLE_REG (NM_PLAYBACK_REG_OFFSET + 0x1)
    #define NM_PLAYBACK_ENABLE_FLAG 1
    #define NM_PLAYBACK_ONESHOT 2
    #define NM_PLAYBACK_FREERUN 4
    
    /* Mutes the audio output. */
   #define NM_AUDIO_MUTE_REG (NM_PLAYBACK_REG_OFFSET + 0x18)
   #define NM_AUDIO_MUTE_LEFT 0x8000
   #define NM_AUDIO_MUTE_RIGHT 0x0080
   #define NM_AUDIO_MUTE_BOTH 0x8080
   
   /* Recording enable register. */
   #define NM_RECORD_ENABLE_REG (NM_RECORD_REG_OFFSET + 0)
   #define NM_RECORD_ENABLE_FLAG 1
   #define NM_RECORD_FREERUN 2
   
   #define NM_RBUFFER_START (NM_RECORD_REG_OFFSET + 0x4)
   #define NM_RBUFFER_END   (NM_RECORD_REG_OFFSET + 0x10)
   #define NM_RBUFFER_WMARK (NM_RECORD_REG_OFFSET + 0xc)
   #define NM_RBUFFER_CURRP (NM_RECORD_REG_OFFSET + 0x8)
   
   #define NM_PBUFFER_START (NM_PLAYBACK_REG_OFFSET + 0x4)
   #define NM_PBUFFER_END   (NM_PLAYBACK_REG_OFFSET + 0x14)
   #define NM_PBUFFER_WMARK (NM_PLAYBACK_REG_OFFSET + 0xc)
   #define NM_PBUFFER_CURRP (NM_PLAYBACK_REG_OFFSET + 0x8)
   
   #endif

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