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 1.8 2008/04/28 20:23:49 martin 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  *
   19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   29  * POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 #ifndef _DEV_IC_CS4231VAR_H_
   33 #define _DEV_IC_CS4231VAR_H_
   34 
   35 #define AUDIOCS_PROM_NAME       "SUNW,CS4231"
   36 
   37 /*
   38  * List of device memory allocations (see cs4231_malloc/cs4231_free).
   39  */
   40 struct cs_dma {
   41         struct  cs_dma  *next;
   42         void *          addr;
   43         bus_dmamap_t    dmamap;
   44         bus_dma_segment_t segs[1];
   45         int             nsegs;
   46         size_t          size;
   47 };
   48 
   49 
   50 /*
   51  * DMA transfer to/from CS4231.
   52  */
   53 struct cs_transfer {
   54         int t_active;           /* this transfer is currently active */
   55         struct cs_dma *t_dma;   /* dma memory to transfer from/to */
   56         vsize_t t_segsz;        /* size of the segment */
   57         vsize_t t_blksz;        /* call audio(9) after this many bytes */
   58         vsize_t t_cnt;          /* how far are we into the segment */
   59 
   60         void (*t_intr)(void*);  /* audio(9) callback */
   61         void *t_arg;
   62 
   63         const char *t_name;     /* for error/debug messages */
   64 
   65         struct evcnt t_intrcnt;
   66         struct evcnt t_ierrcnt;
   67 };
   68 
   69 
   70 /*
   71  * Software state, per CS4231 audio chip.
   72  */
   73 struct cs4231_softc {
   74         struct ad1848_softc sc_ad1848;  /* base device */
   75 
   76         bus_space_tag_t sc_bustag;
   77         bus_dma_tag_t sc_dmatag;
   78 
   79         struct cs_dma *sc_dmas;         /* allocated dma resources */
   80 
   81         struct evcnt sc_intrcnt;        /* parent counter */
   82 
   83         struct cs_transfer sc_playback;
   84         struct cs_transfer sc_capture;
   85 };
   86 
   87 
   88 /*
   89  * Bus independent code shared by sbus and ebus attachments.
   90  */
   91 void    cs4231_common_attach(struct cs4231_softc *, bus_space_handle_t);
   92 int     cs4231_transfer_init(struct cs4231_softc *, struct cs_transfer *,
   93                              bus_addr_t *, bus_size_t *,
   94                              void *, void *, int, void (*)(void *), void *);
   95 void    cs4231_transfer_advance(struct cs_transfer *,
   96                                 bus_addr_t *, bus_size_t *);
   97 
   98 
   99 /*
  100  * Bus independent audio(9) methods.
  101  */
  102 int     cs4231_open(void *, int);
  103 void    cs4231_close(void *);
  104 int     cs4231_getdev(void *, struct audio_device *);
  105 int     cs4231_set_port(void *, mixer_ctrl_t *);
  106 int     cs4231_get_port(void *, mixer_ctrl_t *);
  107 int     cs4231_query_devinfo(void *, mixer_devinfo_t *);
  108 int     cs4231_get_props(void *);
  109 
  110 void    *cs4231_malloc(void *, int, size_t, struct malloc_type *, int);
  111 void    cs4231_free(void *, void *, struct malloc_type *);
  112 
  113 #endif /* _DEV_IC_CS4231VAR_H_ */

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