/* $NetBSD: vidcaudio.c,v 1.62 2022/09/27 06:14:41 skrll Exp $ */ /* * Copyright (c) 1995 Melvin Tang-Richardson * * 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. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the RiscBSD team. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. */ /*- * Copyright (c) 2003 Ben Harris * 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. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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. */ /* * audio driver for the RiscPC 8/16 bit sound * * Interfaces with the NetBSD generic audio driver to provide SUN * /dev/audio (partial) compatibility. */ #include /* proc.h */ __KERNEL_RCSID(0, "$NetBSD: vidcaudio.c,v 1.62 2022/09/27 06:14:41 skrll Exp $"); #include #include /* autoconfig functions */ #include /* device calls */ #include #include #include /* device calls */ #include #include #include #include #include #include #include #include #include #include #include #include #include "pckbd.h" #if NPCKBD > 0 #include #endif extern int *vidc_base; #ifdef VIDCAUDIO_DEBUG #define DPRINTF(x) printf x #else #define DPRINTF(x) #endif #define WriteWord(a, b) \ *((volatile unsigned int *)(a)) = (b) #define ReadWord(a) \ (*((volatile unsigned int *)(a))) struct vidcaudio_softc { device_t sc_dev; irqhandler_t sc_ih; int sc_dma_intr; int sc_is16bit; size_t sc_pblksize; vaddr_t sc_poffset; vaddr_t sc_pbufsize; paddr_t *sc_ppages; size_t sc_szppages; void (*sc_pintr)(void *); void *sc_parg; int sc_pcountdown; kmutex_t sc_lock; kmutex_t sc_intr_lock; }; static int vidcaudio_probe(device_t , cfdata_t , void *); static void vidcaudio_attach(device_t , device_t , void *); static void vidcaudio_close(void *); static int vidcaudio_intr(void *); static void vidcaudio_rate(int); static void vidcaudio_ctrl(int); static void vidcaudio_stereo(int, int); CFATTACH_DECL_NEW(vidcaudio, sizeof(struct vidcaudio_softc), vidcaudio_probe, vidcaudio_attach, NULL, NULL); static int vidcaudio_query_format(void *, audio_format_query_t *); static int vidcaudio_set_format(void *, int, const audio_params_t *, const audio_params_t *, audio_filter_reg_t *, audio_filter_reg_t *); static int vidcaudio_round_blocksize(void *, int, int, const audio_params_t *); static int vidcaudio_trigger_output(void *, void *, void *, int, void (*)(void *), void *, const audio_params_t *); static int vidcaudio_halt_output(void *); static int vidcaudio_getdev(void *, struct audio_device *); static int vidcaudio_set_port(void *, mixer_ctrl_t *); static int vidcaudio_get_port(void *, mixer_ctrl_t *); static int vidcaudio_query_devinfo(void *, mixer_devinfo_t *); static int vidcaudio_get_props(void *); static void vidcaudio_get_locks(void *, kmutex_t **, kmutex_t **); static struct audio_device vidcaudio_device = { "ARM VIDC", "", "vidcaudio" }; static const struct audio_hw_if vidcaudio_hw_if = { .close = vidcaudio_close, .query_format = vidcaudio_query_format, .set_format = vidcaudio_set_format, .round_blocksize = vidcaudio_round_blocksize, .halt_output = vidcaudio_halt_output, .getdev = vidcaudio_getdev, .set_port = vidcaudio_set_port, .get_port = vidcaudio_get_port, .query_devinfo = vidcaudio_query_devinfo, .get_props = vidcaudio_get_props, .trigger_output = vidcaudio_trigger_output, .get_locks = vidcaudio_get_locks, }; static const struct audio_format vidcaudio_formats_16bit = { .mode = AUMODE_PLAY, .encoding = AUDIO_ENCODING_SLINEAR_LE, .validbits = 16, .precision = 16, .channels = 2, .channel_mask = AUFMT_STEREO, /* There are more selectable frequencies but these should be enough. */ .frequency_type = 6, .frequency = { 19600, /* /9 */ 22050, /* /8 */ 25200, /* /7 */ 29400, /* /6 */ 35280, /* /5 */ 44100, /* /4 */ }, }; static const struct audio_format vidcaudio_formats_8bit = { .mode = AUMODE_PLAY, .encoding = AUDIO_ENCODING_ULAW, .validbits = 8, .precision = 8, .channels = 2, /* we use stereo always */ .channel_mask = AUFMT_STEREO, /* frequency is preferably an integer. */ .frequency_type = 6, .frequency = { 10000, /* 50us */ 12500, /* 40us */ 20000, /* 25us */ 25000, /* 20us */ 31250, /* 16us */ 50000, /* 10us */ }, }; static int vidcaudio_probe(device_t parent, cfdata_t cf, void *aux) { int id; id = IOMD_ID; /* So far I only know about this IOMD */ switch (id) { case RPC600_IOMD_ID: case ARM7500_IOC_ID: case ARM7500FE_IOC_ID: return 1; default: aprint_error("vidcaudio: Unknown IOMD id=%04x", id); return 0; } } static void vidcaudio_attach(device_t parent, device_t self, void *aux) { struct vidcaudio_softc *sc = device_private(self); device_t beepdev; sc->sc_dev = self; switch (IOMD_ID) { #ifndef EB7500ATX case RPC600_IOMD_ID: sc->sc_is16bit = (cmos_read(0xc4) >> 5) & 1; sc->sc_dma_intr = IRQ_DMASCH0; break; #endif case ARM7500_IOC_ID: case ARM7500FE_IOC_ID: sc->sc_is16bit = true; sc->sc_dma_intr = IRQ_SDMA; break; default: aprint_error(": strange IOMD\n"); return; } if (sc->sc_is16bit) aprint_normal(": 16-bit external DAC\n"); else aprint_normal(": 8-bit internal DAC\n"); mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE); mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO); /* Install the irq handler for the DMA interrupt */ sc->sc_ih.ih_func = vidcaudio_intr; sc->sc_ih.ih_arg = sc; sc->sc_ih.ih_level = IPL_AUDIO; sc->sc_ih.ih_name = device_xname(self); if (irq_claim(sc->sc_dma_intr, &sc->sc_ih) != 0) { aprint_error("%s: couldn't claim IRQ %d\n", device_xname(self), sc->sc_dma_intr); return; } disable_irq(sc->sc_dma_intr); beepdev = audio_attach_mi(&vidcaudio_hw_if, sc, self); #if NPCKBD > 0 pckbd_hookup_bell(audiobell, beepdev); #endif } static void vidcaudio_close(void *addr) { struct vidcaudio_softc *sc; DPRINTF(("DEBUG: vidcaudio_close called\n")); sc = addr; if (sc->sc_ppages != NULL) { kmem_free(sc->sc_ppages, sc->sc_szppages * sizeof(paddr_t)); sc->sc_ppages = NULL; sc->sc_szppages = 0; } } /* * Interface to the generic audio driver */ static int vidcaudio_query_format(void *addr, audio_format_query_t *afp) { struct vidcaudio_softc *sc; sc = addr; if (sc->sc_is16bit) return audio_query_format(&vidcaudio_formats_16bit, 1, afp); else return audio_query_format(&vidcaudio_formats_8bit, 1, afp); } static int vidcaudio_set_format(void *addr, int setmode, const audio_params_t *play, const audio_params_t *rec, audio_filter_reg_t *pfil, audio_filter_reg_t *rfil) { struct vidcaudio_softc *sc; int sample_period, ch; sc = addr; if (sc->sc_is16bit) { /* ARM7500ish, 16-bit, two-channel */ sample_period = 705600 / 4 / play->sample_rate; if (sample_period < 3) sample_period = 3; vidcaudio_rate(sample_period - 2); vidcaudio_ctrl(SCR_SERIAL); } else { /* VIDC20ish, u-law, 8-channel */ /* * We always use two hardware channels, because using * one at 8kHz gives a nasty whining sound from the * speaker. */ sample_period = 1000000 / 2 / play->sample_rate; if (sample_period < 3) sample_period = 3; vidcaudio_rate(sample_period - 2); vidcaudio_ctrl(SCR_SDAC | SCR_CLKSEL); for (ch = 0; ch < 8; ch += 2) vidcaudio_stereo(ch, SIR_LEFT_100); for (ch = 1; ch < 8; ch += 2) vidcaudio_stereo(ch, SIR_RIGHT_100); pfil->codec = audio_internal_to_mulaw; } return 0; } static int vidcaudio_round_blocksize(void *addr, int wantblk, int mode, const audio_params_t *param) { int blk; /* * Find the smallest power of two that's larger than the * requested block size, but don't allow < 32 (DMA burst is 16 * bytes, and single bursts are tricky) or > PAGE_SIZE (DMA is * confined to a page). */ for (blk = 32; blk < PAGE_SIZE; blk <<= 1) if (blk >= wantblk) return blk; return blk; } static int vidcaudio_trigger_output(void *addr, void *start, void *end, int blksize, void (*intr)(void *), void *arg, const audio_params_t *params) { struct vidcaudio_softc *sc; size_t npages, i; DPRINTF(("vidcaudio_trigger_output %p-%p/0x%x\n", start, end, blksize)); sc = addr; KASSERT(blksize == vidcaudio_round_blocksize(addr, blksize, 0, NULL)); KASSERT((vaddr_t)start % blksize == 0); sc->sc_pblksize = blksize; sc->sc_pbufsize = (char *)end - (char *)start; npages = sc->sc_pbufsize >> PGSHIFT; if (sc->sc_ppages != NULL) kmem_free(sc->sc_ppages, sc->sc_szppages); sc->sc_szppages = npages * sizeof(paddr_t); sc->sc_ppages = kmem_alloc(sc->sc_szppages, KM_SLEEP); if (sc->sc_ppages == NULL) return ENOMEM; for (i = 0; i < npages; i++) if (!pmap_extract(pmap_kernel(), (vaddr_t)start + i * PAGE_SIZE, &sc->sc_ppages[i])) return EIO; sc->sc_poffset = 0; sc->sc_pintr = intr; sc->sc_parg = arg; IOMD_WRITE_WORD(IOMD_SD0CR, IOMD_DMACR_CLEAR | IOMD_DMACR_QUADWORD); IOMD_WRITE_WORD(IOMD_SD0CR, IOMD_DMACR_ENABLE | IOMD_DMACR_QUADWORD); /* * Queue up the first two blocks, but don't tell audio code * we're finished with them yet. */ sc->sc_pcountdown = 2; enable_irq(sc->sc_dma_intr); return 0; } static int vidcaudio_halt_output(void *addr) { struct vidcaudio_softc *sc; DPRINTF(("vidcaudio_halt_output\n")); sc = addr; disable_irq(sc->sc_dma_intr); IOMD_WRITE_WORD(IOMD_SD0CR, IOMD_DMACR_CLEAR | IOMD_DMACR_QUADWORD); return 0; } static int vidcaudio_getdev(void *addr, struct audio_device *retp) { *retp = vidcaudio_device; return 0; } static int vidcaudio_set_port(void *addr, mixer_ctrl_t *cp) { return EINVAL; } static int vidcaudio_get_port(void *addr, mixer_ctrl_t *cp) { return EINVAL; } static int vidcaudio_query_devinfo(void *addr, mixer_devinfo_t *dip) { return ENXIO; } static int vidcaudio_get_props(void *addr) { return AUDIO_PROP_PLAYBACK | AUDIO_PROP_CAPTURE; } static void vidcaudio_get_locks(void *opaque, kmutex_t **intr, kmutex_t **thread) { struct vidcaudio_softc *sc = opaque; *intr = &sc->sc_intr_lock; *thread = &sc->sc_lock; } static void vidcaudio_rate(int rate) { WriteWord(vidc_base, VIDC_SFR | rate); } static void vidcaudio_ctrl(int ctrl) { WriteWord(vidc_base, VIDC_SCR | ctrl); } static void vidcaudio_stereo(int channel, int position) { channel = channel << 24 | VIDC_SIR0; WriteWord(vidc_base, channel | position); } static int vidcaudio_intr(void *arg) { struct vidcaudio_softc *sc; int status; paddr_t pnext, pend; sc = arg; mutex_spin_enter(&sc->sc_intr_lock); status = IOMD_READ_BYTE(IOMD_SD0ST); DPRINTF(("I[%x]", status)); if ((status & IOMD_DMAST_INT) == 0) { mutex_spin_exit(&sc->sc_intr_lock); return 0; } pnext = sc->sc_ppages[sc->sc_poffset >> PGSHIFT] | (sc->sc_poffset & PGOFSET); pend = (pnext + sc->sc_pblksize - 16) & IOMD_DMAEND_OFFSET; switch (status & (IOMD_DMAST_OVERRUN | IOMD_DMAST_INT | IOMD_DMAST_BANKB)) { case (IOMD_DMAST_INT | IOMD_DMAST_BANKA): case (IOMD_DMAST_OVERRUN | IOMD_DMAST_INT | IOMD_DMAST_BANKB): DPRINTF(("B<0x%08lx,0x%03lx>", pnext, pend)); IOMD_WRITE_WORD(IOMD_SD0CURB, pnext); IOMD_WRITE_WORD(IOMD_SD0ENDB, pend); break; case (IOMD_DMAST_INT | IOMD_DMAST_BANKB): case (IOMD_DMAST_OVERRUN | IOMD_DMAST_INT | IOMD_DMAST_BANKA): DPRINTF(("A<0x%08lx,0x%03lx>", pnext, pend)); IOMD_WRITE_WORD(IOMD_SD0CURA, pnext); IOMD_WRITE_WORD(IOMD_SD0ENDA, pend); break; } sc->sc_poffset += sc->sc_pblksize; if (sc->sc_poffset >= sc->sc_pbufsize) sc->sc_poffset = 0; if (sc->sc_pcountdown > 0) sc->sc_pcountdown--; else (*sc->sc_pintr)(sc->sc_parg); mutex_spin_exit(&sc->sc_intr_lock); return 1; }