The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/cs4231var.h

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    1 /*      $NetBSD: cs4231var.h,v 1.5 2004/07/09 02:08:33 mycroft Exp $    */
    2 
    3 /*-
    4  * Copyright (c) 1998, 1999 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Paul Kranenburg.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 #ifndef _DEV_IC_CS4231VAR_H_
   40 #define _DEV_IC_CS4231VAR_H_
   41 
   42 #define AUDIOCS_PROM_NAME       "SUNW,CS4231"
   43 
   44 /*
   45  * List of device memory allocations (see cs4231_malloc/cs4231_free).
   46  */
   47 struct cs_dma {
   48         struct  cs_dma  *next;
   49         caddr_t         addr;
   50         bus_dmamap_t    dmamap;
   51         bus_dma_segment_t segs[1];
   52         int             nsegs;
   53         size_t          size;
   54 };
   55 
   56 
   57 /*
   58  * DMA transfer to/from CS4231.
   59  */
   60 struct cs_transfer {
   61         int t_active;           /* this transfer is currently active */
   62         struct cs_dma *t_dma;   /* dma memory to transfer from/to */
   63         vsize_t t_segsz;        /* size of the segment */
   64         vsize_t t_blksz;        /* call audio(9) after this many bytes */
   65         vsize_t t_cnt;          /* how far are we into the segment */
   66 
   67         void (*t_intr)(void*);  /* audio(9) callback */
   68         void *t_arg;
   69 
   70         const char *t_name;     /* for error/debug messages */
   71 
   72         struct evcnt t_intrcnt;
   73         struct evcnt t_ierrcnt;
   74 };
   75 
   76 
   77 /*
   78  * Software state, per CS4231 audio chip.
   79  */
   80 struct cs4231_softc {
   81         struct ad1848_softc sc_ad1848;  /* base device */
   82 
   83         bus_space_tag_t sc_bustag;
   84         bus_dma_tag_t sc_dmatag;
   85 
   86         struct cs_dma *sc_dmas;         /* allocated dma resources */
   87 
   88         struct evcnt sc_intrcnt;        /* parent counter */
   89 
   90         struct cs_transfer sc_playback;
   91         struct cs_transfer sc_capture;
   92 };
   93 
   94 
   95 /*
   96  * Bus independent code shared by sbus and ebus attachments.
   97  */
   98 void    cs4231_common_attach(struct cs4231_softc *, bus_space_handle_t);
   99 int     cs4231_transfer_init(struct cs4231_softc *, struct cs_transfer *,
  100                              bus_addr_t *, bus_size_t *,
  101                              void *, void *, int, void (*)(void *), void *);
  102 void    cs4231_transfer_advance(struct cs_transfer *,
  103                                 bus_addr_t *, bus_size_t *);
  104 
  105 
  106 /*
  107  * Bus independent audio(9) methods.
  108  */
  109 int     cs4231_open(void *, int);
  110 void    cs4231_close(void *);
  111 int     cs4231_getdev(void *, struct audio_device *);
  112 int     cs4231_set_port(void *, mixer_ctrl_t *);
  113 int     cs4231_get_port(void *, mixer_ctrl_t *);
  114 int     cs4231_query_devinfo(void *, mixer_devinfo_t *);
  115 int     cs4231_get_props(void *);
  116 
  117 void    *cs4231_malloc(void *, int, size_t, struct malloc_type *, int);
  118 void    cs4231_free(void *, void *, struct malloc_type *);
  119 
  120 #endif /* _DEV_IC_CS4231VAR_H_ */

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