1 /*- 2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/dev/sound/pcm/buffer.h,v 1.10.2.2 2007/05/13 20:50:31 ariff Exp $ 27 * $DragonFly: src/sys/dev/sound/pcm/buffer.h,v 1.5 2008/01/05 13:34:22 corecode Exp $ 28 */ 29 30 #define SND_DMA(b) (sndbuf_getflags((b)) & SNDBUF_F_DMA) 31 #define SNDBUF_LOCKASSERT(b) 32 33 #define SNDBUF_F_DMA 0x00000001 34 #define SNDBUF_F_XRUN 0x00000002 35 #define SNDBUF_F_RUNNING 0x00000004 36 #define SNDBUF_F_MANAGED 0x00000008 37 38 #define SNDBUF_NAMELEN 48 39 40 struct snd_dbuf { 41 device_t dev; 42 u_int8_t *buf, *tmpbuf; 43 unsigned int bufsize, maxsize; 44 volatile int dl; /* transfer size */ 45 volatile int rp; /* pointers to the ready area */ 46 volatile int rl; /* length of ready area */ 47 volatile int hp; 48 volatile u_int32_t total, prev_total; 49 int dmachan, dir; /* dma channel */ 50 u_int32_t fmt, spd, bps; 51 unsigned int blksz, blkcnt; 52 int xrun; 53 u_int32_t flags; 54 bus_dmamap_t dmamap; 55 bus_dma_tag_t dmatag; 56 bus_addr_t buf_addr; 57 struct selinfo sel; 58 struct task seltask; 59 struct pcm_channel *channel; 60 char name[SNDBUF_NAMELEN]; 61 }; 62 63 struct snd_dbuf *sndbuf_create(device_t dev, char *drv, char *desc, struct pcm_channel *channel); 64 void sndbuf_destroy(struct snd_dbuf *b); 65 66 void sndbuf_dump(struct snd_dbuf *b, char *s, u_int32_t what); 67 68 int sndbuf_alloc(struct snd_dbuf *b, bus_dma_tag_t dmatag, unsigned int size); 69 int sndbuf_setup(struct snd_dbuf *b, void *buf, unsigned int size); 70 void sndbuf_free(struct snd_dbuf *b); 71 int sndbuf_resize(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz); 72 int sndbuf_remalloc(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz); 73 void sndbuf_reset(struct snd_dbuf *b); 74 void sndbuf_clear(struct snd_dbuf *b, unsigned int length); 75 void sndbuf_fillsilence(struct snd_dbuf *b); 76 77 u_int32_t sndbuf_getfmt(struct snd_dbuf *b); 78 int sndbuf_setfmt(struct snd_dbuf *b, u_int32_t fmt); 79 unsigned int sndbuf_getspd(struct snd_dbuf *b); 80 void sndbuf_setspd(struct snd_dbuf *b, unsigned int spd); 81 unsigned int sndbuf_getbps(struct snd_dbuf *b); 82 83 bus_addr_t sndbuf_getbufaddr(struct snd_dbuf *buf); 84 85 void *sndbuf_getbuf(struct snd_dbuf *b); 86 void *sndbuf_getbufofs(struct snd_dbuf *b, unsigned int ofs); 87 unsigned int sndbuf_getsize(struct snd_dbuf *b); 88 unsigned int sndbuf_getmaxsize(struct snd_dbuf *b); 89 unsigned int sndbuf_getalign(struct snd_dbuf *b); 90 unsigned int sndbuf_getblkcnt(struct snd_dbuf *b); 91 void sndbuf_setblkcnt(struct snd_dbuf *b, unsigned int blkcnt); 92 unsigned int sndbuf_getblksz(struct snd_dbuf *b); 93 void sndbuf_setblksz(struct snd_dbuf *b, unsigned int blksz); 94 unsigned int sndbuf_runsz(struct snd_dbuf *b); 95 void sndbuf_setrun(struct snd_dbuf *b, int go); 96 struct selinfo *sndbuf_getsel(struct snd_dbuf *b); 97 98 unsigned int sndbuf_getxrun(struct snd_dbuf *b); 99 void sndbuf_setxrun(struct snd_dbuf *b, unsigned int cnt); 100 unsigned int sndbuf_gethwptr(struct snd_dbuf *b); 101 void sndbuf_sethwptr(struct snd_dbuf *b, unsigned int ptr); 102 unsigned int sndbuf_getfree(struct snd_dbuf *b); 103 unsigned int sndbuf_getfreeptr(struct snd_dbuf *b); 104 unsigned int sndbuf_getready(struct snd_dbuf *b); 105 unsigned int sndbuf_getreadyptr(struct snd_dbuf *b); 106 unsigned int sndbuf_getblocks(struct snd_dbuf *b); 107 unsigned int sndbuf_getprevblocks(struct snd_dbuf *b); 108 unsigned int sndbuf_gettotal(struct snd_dbuf *b); 109 void sndbuf_updateprevtotal(struct snd_dbuf *b); 110 111 int sndbuf_acquire(struct snd_dbuf *b, u_int8_t *from, unsigned int count); 112 int sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count); 113 int sndbuf_feed(struct snd_dbuf *from, struct snd_dbuf *to, struct pcm_channel *channel, struct pcm_feeder *feeder, unsigned int count); 114 115 u_int32_t sndbuf_getflags(struct snd_dbuf *b); 116 void sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on); 117 118 int sndbuf_dmasetup(struct snd_dbuf *b, struct resource *drq); 119 int sndbuf_dmasetdir(struct snd_dbuf *b, int dir); 120 void sndbuf_dma(struct snd_dbuf *b, int go); 121 int sndbuf_dmaptr(struct snd_dbuf *b); 122 void sndbuf_dmabounce(struct snd_dbuf *b); 123