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      1 /* $NetBSD: esavar.h,v 1.12 2012/10/27 17:18:31 chs Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2001, 2002 Jared D. McNeill <jmcneill (at) invisible.ca>
      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 /*
     36  * Number of simultaneous voices
     37  *
     38  * NOTE: The current code attaches audio0 thru audioESA_NUM_VOICES-1
     39  *       to this driver, and a lot of people probably don't want that.
     40  *       So, we'll default to 1 but we'll allow for the possibility of
     41  *       more.
     42  *
     43  * The current MINISRC image limits us to a maximum of 4 simultaneous voices.
     44  */
     45 #ifndef ESA_NUM_VOICES
     46 #define	ESA_NUM_VOICES		1
     47 #endif
     48 
     49 #define KERNADDR(p)	((void *)((p)->addr))
     50 #define	DMAADDR(p)	((p)->map->dm_segs[0].ds_addr)
     51 
     52 #define ESA_MINRATE	8000
     53 #define ESA_MAXRATE	48000
     54 
     55 struct esa_list {
     56 	int			currlen;
     57 	int			mem_addr;
     58 	int			max;
     59 	int			indexmap[ESA_NUM_VOICES * 2];
     60 };
     61 
     62 struct esa_dma {
     63 	bus_dmamap_t		map;
     64 	void *			addr;
     65 	bus_dma_segment_t	segs[1];
     66 	int			nsegs;
     67 	size_t			size;
     68 	struct esa_dma		*next;
     69 };
     70 
     71 struct esa_channel {
     72 	int			active;
     73 	int			data_offset;
     74 	int			index;
     75 	size_t			bufsize;
     76 	int			blksize;
     77 	int			pos;
     78 	void			*buf;
     79 	uint32_t		start;
     80 	uint32_t		count;
     81 
     82 	/* mode settings */
     83 	struct audio_params	mode;
     84 
     85 	void			(*intr)(void *);
     86 	void			*arg;
     87 };
     88 
     89 struct esa_voice {
     90 	device_t		parent;	/* pointer to our parent */
     91 	struct esa_channel	play;
     92 	struct esa_channel	rec;
     93 	struct esa_dma		*dma;
     94 	int			inlist;
     95 	int			index;	/* 0: play, 1: record */
     96 };
     97 
     98 struct esa_softc
     99 {
    100 	device_t		sc_dev;
    101 	bus_space_tag_t		sc_iot;
    102 	bus_space_handle_t	sc_ioh;
    103 	bus_addr_t		sc_iob;
    104 	bus_size_t		sc_ios;
    105 	kmutex_t		sc_lock;
    106 	kmutex_t		sc_intr_lock;
    107 
    108 	pcitag_t		sc_tag;
    109 	pci_chipset_tag_t	sc_pct;
    110 	bus_dma_tag_t		sc_dmat;
    111 	pcireg_t		sc_pcireg;
    112 
    113 	void			*sc_ih;
    114 
    115 	struct ac97_codec_if	*codec_if;
    116 	struct ac97_host_if	host_if;
    117 	enum ac97_host_flags	codec_flags;
    118 
    119 	device_t		sc_audiodev[ESA_NUM_VOICES];
    120 
    121 	struct esa_voice	voice[ESA_NUM_VOICES];
    122 	struct esa_dma		*sc_dmas;
    123 	int			count;
    124 
    125 	/* timer management */
    126 	int			sc_ntimers;
    127 
    128 	/* packed list structures */
    129 	struct esa_list		mixer_list;
    130 	struct esa_list		adc1_list;
    131 	struct esa_list		dma_list;
    132 	struct esa_list		msrc_list;
    133 
    134 	int			type;		/* Allegro-1 or Maestro 3? */
    135 	int			delay1, delay2;
    136 
    137 	uint16_t		*savemem;
    138 	size_t			savememsz;
    139 };
    140