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esavar.h revision 1.1 
      1 /* $NetBSD: esavar.h,v 1.1 2002/01/06 16:06:14 jmcneill Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2001, 2002 Jared D. McNeill <jmcneill (at) invisible.yi.org>
      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. The name of the author may not be used to endorse or promote products
     13  *    derived from this software without specific prior written permission.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     22  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     23  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 /*
     29  * ESS Allegro-1 / Maestro3 Audio Driver
     30  *
     31  * Based on the FreeBSD maestro3 driver
     32  *
     33  */
     34 
     35 #define KERNADDR(p)	((void *)((p)->addr))
     36 #define	DMAADDR(p)	((p)->map->dm_segs[0].ds_addr)
     37 
     38 #define ESA_MINRATE	8000
     39 #define ESA_MAXRATE	48000
     40 
     41 struct esa_dma {
     42 	bus_dmamap_t		map;
     43 	caddr_t			addr;
     44 	bus_dma_segment_t	segs[1];
     45 	int			nsegs;
     46 	size_t			size;
     47 	struct esa_dma		*next;
     48 };
     49 
     50 struct esa_channel {
     51 	int			active;
     52 	size_t			bufsize;
     53 	int			blksize;
     54 	int			pos;
     55 	void			*buf;
     56 	u_int32_t		start;
     57 	u_int32_t		count;
     58 	struct esa_dma		*dma;
     59 };
     60 
     61 struct esa_softc
     62 {
     63 	struct device		sc_dev;
     64 	bus_space_tag_t		sc_iot;
     65 	bus_space_handle_t	sc_ioh;
     66 	bus_addr_t		sc_iob;
     67 	bus_size_t		sc_ios;
     68 
     69 	pcitag_t		sc_tag;
     70 	pci_chipset_tag_t	sc_pct;
     71 	bus_dma_tag_t		sc_dmat;
     72 	pcireg_t		sc_pcireg;
     73 
     74 	void			*sc_ih;
     75 
     76 	struct ac97_codec_if	*codec_if;
     77 	struct ac97_host_if	host_if;
     78 	enum ac97_host_flags	codec_flags;
     79 
     80 	void			(*intr)(void *);
     81 	void			*arg;
     82 
     83 	struct device		*sc_audiodev;
     84 
     85 	struct esa_channel	play;
     86 	struct esa_dma		*sc_dmas;
     87 
     88 	int			type;		/* Allegro-1 or Maestro 3? */
     89 	int			delay1, delay2;
     90 };
     91