/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 1999 Cameron Grant * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #define SND_DMA(b) (sndbuf_getflags((b)) & SNDBUF_F_DMA) #define SNDBUF_LOCKASSERT(b) #define SNDBUF_F_DMA 0x00000001 #define SNDBUF_F_XRUN 0x00000002 #define SNDBUF_F_RUNNING 0x00000004 #define SNDBUF_F_MANAGED 0x00000008 #define SNDBUF_NAMELEN 48 struct snd_dbuf { device_t dev; u_int8_t *buf, *tmpbuf; u_int8_t *shadbuf; /**< shadow buffer used w/ S_D_SILENCE/SKIP */ volatile int sl; /**< shadbuf ready length in # of bytes */ unsigned int bufsize, maxsize, allocsize; volatile int dl; /* transfer size */ volatile int rp; /* pointers to the ready area */ volatile int rl; /* length of ready area */ volatile int hp; volatile u_int64_t total, prev_total; int dmachan, dir; /* dma channel */ u_int32_t fmt, spd, bps, align; unsigned int blksz, blkcnt; int xrun; u_int32_t flags; bus_dmamap_t dmamap; bus_dma_tag_t dmatag; bus_addr_t buf_addr; int dmaflags; struct selinfo sel; struct pcm_channel *channel; char name[SNDBUF_NAMELEN]; }; struct snd_dbuf *sndbuf_create(device_t dev, char *drv, char *desc, struct pcm_channel *channel); void sndbuf_destroy(struct snd_dbuf *b); void sndbuf_dump(struct snd_dbuf *b, char *s, u_int32_t what); int sndbuf_alloc(struct snd_dbuf *b, bus_dma_tag_t dmatag, int dmaflags, unsigned int size); int sndbuf_setup(struct snd_dbuf *b, void *buf, unsigned int size); void sndbuf_free(struct snd_dbuf *b); int sndbuf_resize(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz); int sndbuf_remalloc(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz); void sndbuf_reset(struct snd_dbuf *b); void sndbuf_clear(struct snd_dbuf *b, unsigned int length); void sndbuf_fillsilence(struct snd_dbuf *b); void sndbuf_fillsilence_rl(struct snd_dbuf *b, u_int rl); void sndbuf_softreset(struct snd_dbuf *b); void sndbuf_clearshadow(struct snd_dbuf *b); u_int32_t sndbuf_getfmt(struct snd_dbuf *b); int sndbuf_setfmt(struct snd_dbuf *b, u_int32_t fmt); unsigned int sndbuf_getspd(struct snd_dbuf *b); void sndbuf_setspd(struct snd_dbuf *b, unsigned int spd); unsigned int sndbuf_getbps(struct snd_dbuf *b); bus_addr_t sndbuf_getbufaddr(struct snd_dbuf *buf); void *sndbuf_getbuf(struct snd_dbuf *b); void *sndbuf_getbufofs(struct snd_dbuf *b, unsigned int ofs); unsigned int sndbuf_getsize(struct snd_dbuf *b); unsigned int sndbuf_getmaxsize(struct snd_dbuf *b); unsigned int sndbuf_getallocsize(struct snd_dbuf *b); unsigned int sndbuf_getalign(struct snd_dbuf *b); unsigned int sndbuf_getblkcnt(struct snd_dbuf *b); void sndbuf_setblkcnt(struct snd_dbuf *b, unsigned int blkcnt); unsigned int sndbuf_getblksz(struct snd_dbuf *b); void sndbuf_setblksz(struct snd_dbuf *b, unsigned int blksz); unsigned int sndbuf_runsz(struct snd_dbuf *b); void sndbuf_setrun(struct snd_dbuf *b, int go); struct selinfo *sndbuf_getsel(struct snd_dbuf *b); unsigned int sndbuf_getxrun(struct snd_dbuf *b); void sndbuf_setxrun(struct snd_dbuf *b, unsigned int xrun); unsigned int sndbuf_gethwptr(struct snd_dbuf *b); void sndbuf_sethwptr(struct snd_dbuf *b, unsigned int ptr); unsigned int sndbuf_getfree(struct snd_dbuf *b); unsigned int sndbuf_getfreeptr(struct snd_dbuf *b); unsigned int sndbuf_getready(struct snd_dbuf *b); unsigned int sndbuf_getreadyptr(struct snd_dbuf *b); u_int64_t sndbuf_getblocks(struct snd_dbuf *b); u_int64_t sndbuf_getprevblocks(struct snd_dbuf *b); u_int64_t sndbuf_gettotal(struct snd_dbuf *b); u_int64_t sndbuf_getprevtotal(struct snd_dbuf *b); unsigned int sndbuf_xbytes(unsigned int v, struct snd_dbuf *from, struct snd_dbuf *to); u_int8_t sndbuf_zerodata(u_int32_t fmt); void sndbuf_updateprevtotal(struct snd_dbuf *b); int sndbuf_acquire(struct snd_dbuf *b, u_int8_t *from, unsigned int count); int sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count); int sndbuf_feed(struct snd_dbuf *from, struct snd_dbuf *to, struct pcm_channel *channel, struct pcm_feeder *feeder, unsigned int count); u_int32_t sndbuf_getflags(struct snd_dbuf *b); void sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on); int sndbuf_dmasetup(struct snd_dbuf *b, struct resource *drq); int sndbuf_dmasetdir(struct snd_dbuf *b, int dir); void sndbuf_dma(struct snd_dbuf *b, int go); int sndbuf_dmaptr(struct snd_dbuf *b); void sndbuf_dmabounce(struct snd_dbuf *b); #ifdef OSSV4_EXPERIMENT void sndbuf_getpeaks(struct snd_dbuf *b, int *lp, int *rp); #endif static inline u_int32_t snd_xbytes(u_int32_t v, u_int32_t from, u_int32_t to) { if (from == to) return (v); if (from == 0) return (0); return ((u_int64_t)v * to / from); }