Substantial rewrite of vidcaudio(4). I don't know if the old version
had ever worked, but if it had, it had bit-rotted so far that it almost all needed replacing. The new version support both 8-bit sound on the VIDC20 and 16-bit sound on the ARM7500 and ARM7500FE. sysbeep() support has been lost, but I'm not sure whether that belongs here or in audio(4) anyway. Support for 16-bit sound on the VIDC20 isn't present because I don't have the hardware to test it. Donations welcome!
This commit is contained in:
bjh21
parent
2432228b70
commit
176435992e
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@ -1,4 +1,4 @@
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/* $NetBSD: vidcaudio.c,v 1.23 2003/12/29 16:49:31 bjh21 Exp $ */
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/* $NetBSD: vidcaudio.c,v 1.24 2003/12/31 15:06:24 bjh21 Exp $ */
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/*
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* Copyright (c) 1995 Melvin Tang-Richardson
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@ -29,8 +29,35 @@
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 2003 Ben Harris
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* audio driver for the RiscPC 16 bit sound
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* audio driver for the RiscPC 8/16 bit sound
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*
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* Interfaces with the NetBSD generic audio driver to provide SUN
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* /dev/audio (partial) compatibility.
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@ -38,7 +65,7 @@
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#include <sys/param.h> /* proc.h */
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__KERNEL_RCSID(0, "$NetBSD: vidcaudio.c,v 1.23 2003/12/29 16:49:31 bjh21 Exp $");
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__KERNEL_RCSID(0, "$NetBSD: vidcaudio.c,v 1.24 2003/12/31 15:06:24 bjh21 Exp $");
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#include <sys/audioio.h>
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#include <sys/conf.h> /* autoconfig functions */
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@ -50,6 +77,7 @@ __KERNEL_RCSID(0, "$NetBSD: vidcaudio.c,v 1.23 2003/12/29 16:49:31 bjh21 Exp $")
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#include <uvm/uvm_extern.h>
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#include <dev/audio_if.h>
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#include <dev/mulaw.h>
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#include <machine/intr.h>
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#include <arm/arm32/katelib.h>
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@ -64,28 +92,22 @@ __KERNEL_RCSID(0, "$NetBSD: vidcaudio.c,v 1.23 2003/12/29 16:49:31 bjh21 Exp $")
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extern int *vidc_base;
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struct audio_general {
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vaddr_t silence;
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irqhandler_t ih;
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void (*intr)(void *);
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void *arg;
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paddr_t next_cur;
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paddr_t next_end;
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void (*next_intr)(void *);
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void *next_arg;
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int buffer;
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int in_progress;
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int open;
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} ag;
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struct vidcaudio_softc {
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struct device device;
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struct device sc_dev;
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int open;
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irqhandler_t sc_ih;
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int sc_dma_intr;
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u_int sc_hw_encoding;
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u_int sc_hw_precision;
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void *sc_pstart;
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void *sc_pend;
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size_t sc_pblksize;
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void *sc_pnext;
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void (*sc_pintr)(void *);
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void *sc_parg;
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int sc_pcountdown;
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};
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int vidcaudio_probe(struct device *, struct cfdata *, void *);
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@ -95,12 +117,11 @@ void vidcaudio_close(void *);
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int vidcaudio_intr(void *);
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int vidcaudio_dma_program(vaddr_t, vaddr_t, void (*)(void *), void *);
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void vidcaudio_dummy_routine(void *);
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int vidcaudio_stereo(int, int);
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int vidcaudio_rate(int);
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void vidcaudio_shutdown(void);
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static int sound_dma_intr;
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void vidcaudio_rate(int);
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void vidcaudio_ctrl(int);
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void vidcaudio_stereo(int, int);
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void mulaw_to_vidc(void *, u_char *, int);
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void mulaw_to_vidc_stereo(void *, u_char *, int);
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CFATTACH_DECL(vidcaudio, sizeof(struct vidcaudio_softc),
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vidcaudio_probe, vidcaudio_attach, NULL, NULL);
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@ -109,8 +130,10 @@ int vidcaudio_query_encoding(void *, struct audio_encoding *);
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int vidcaudio_set_params(void *, int, int, struct audio_params *,
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struct audio_params *);
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int vidcaudio_round_blocksize(void *, int);
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int vidcaudio_start_output(void *, void *, int, void (*)(void *), void *);
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int vidcaudio_start_input(void *, void *, int, void (*)(void *), void *);
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int vidcaudio_trigger_output(void *, void *, void *, int, void (*)(void *),
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void *, struct audio_params *);
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int vidcaudio_trigger_input(void *, void *, void *, int, void (*)(void *),
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void *, struct audio_params *);
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int vidcaudio_halt_output(void *);
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int vidcaudio_halt_input(void *);
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int vidcaudio_getdev(void *, struct audio_device *);
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@ -120,8 +143,8 @@ int vidcaudio_query_devinfo(void *, mixer_devinfo_t *);
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int vidcaudio_get_props(void *);
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struct audio_device vidcaudio_device = {
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"VidcAudio 8-bit",
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"x",
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"ARM VIDC",
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"",
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"vidcaudio"
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};
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@ -135,8 +158,8 @@ struct audio_hw_if vidcaudio_hw_if = {
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NULL,
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NULL,
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NULL,
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vidcaudio_start_output,
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vidcaudio_start_input,
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NULL,
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NULL,
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vidcaudio_halt_output,
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vidcaudio_halt_input,
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NULL,
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@ -150,8 +173,8 @@ struct audio_hw_if vidcaudio_hw_if = {
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NULL,
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NULL,
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vidcaudio_get_props,
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NULL,
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NULL,
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vidcaudio_trigger_output,
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vidcaudio_trigger_input,
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NULL,
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};
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@ -160,8 +183,6 @@ void
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vidcaudio_beep_generate(void)
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{
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vidcaudio_dma_program(ag.silence, ag.silence+sizeof(beep_waveform)-16,
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vidcaudio_dummy_routine, NULL);
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}
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@ -175,18 +196,13 @@ vidcaudio_probe(struct device *parent, struct cfdata *cf, void *aux)
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/* So far I only know about this IOMD */
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switch (id) {
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case RPC600_IOMD_ID:
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return 1;
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break;
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case ARM7500_IOC_ID:
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case ARM7500FE_IOC_ID:
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return 1;
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break;
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default:
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printf("vidcaudio: Unknown IOMD id=%04x", id);
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break;
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aprint_error("vidcaudio: Unknown IOMD id=%04x", id);
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return 0;
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}
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return 0;
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}
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@ -194,99 +210,60 @@ void
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vidcaudio_attach(struct device *parent, struct device *self, void *aux)
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{
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struct vidcaudio_softc *sc = (void *)self;
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int id;
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sc->open = 0;
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ag.in_progress = 0;
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ag.next_cur = 0;
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ag.next_end = 0;
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ag.next_intr = NULL;
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ag.next_arg = NULL;
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vidcaudio_rate(32); /* 24*1024 */
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/* Program the silence buffer and reset the DMA channel */
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ag.silence = uvm_km_alloc(kernel_map, PAGE_SIZE);
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if (ag.silence == 0)
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panic("vidcaudio: Cannot allocate memory");
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memset((char *)ag.silence, 0, PAGE_SIZE);
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memcpy((char *)ag.silence, (char *)beep_waveform, sizeof(beep_waveform));
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ag.buffer = 0;
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/* Install the irq handler for the DMA interrupt */
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ag.ih.ih_func = vidcaudio_intr;
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ag.ih.ih_arg = NULL;
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ag.ih.ih_level = IPL_AUDIO;
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ag.ih.ih_name = "vidcaudio";
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ag.intr = NULL;
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/* ag.nextintr = NULL;*/
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id = IOMD_ID;
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switch (id) {
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switch (IOMD_ID) {
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case RPC600_IOMD_ID:
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sound_dma_intr = IRQ_DMASCH0;
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sc->sc_hw_encoding = AUDIO_ENCODING_ULAW;
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sc->sc_hw_precision = 8;
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sc->sc_dma_intr = IRQ_DMASCH0;
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aprint_normal(": 8-bit\n");
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break;
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case ARM7500_IOC_ID:
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case ARM7500FE_IOC_ID:
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sound_dma_intr = IRQ_SDMA;
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sc->sc_hw_encoding = AUDIO_ENCODING_SLINEAR_LE;
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sc->sc_hw_precision = 16;
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sc->sc_dma_intr = IRQ_SDMA;
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aprint_normal(": 16-bit\n");
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break;
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default:
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aprint_error(": strange IOMD\n");
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return;
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}
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disable_irq(sound_dma_intr);
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/* Install the irq handler for the DMA interrupt */
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sc->sc_ih.ih_func = vidcaudio_intr;
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sc->sc_ih.ih_arg = sc;
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sc->sc_ih.ih_level = IPL_AUDIO;
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sc->sc_ih.ih_name = self->dv_xname;
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if (irq_claim(sound_dma_intr, &(ag.ih)))
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panic("vidcaudio: couldn't claim IRQ %d", sound_dma_intr);
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if (irq_claim(sc->sc_dma_intr, &sc->sc_ih) != 0) {
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aprint_error("%s: couldn't claim IRQ %d\n",
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self->dv_xname, sc->sc_dma_intr);
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return;
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}
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disable_irq(sound_dma_intr);
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disable_irq(sc->sc_dma_intr);
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printf("\n");
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vidcaudio_dma_program(ag.silence, ag.silence + PAGE_SIZE - 16,
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vidcaudio_dummy_routine, NULL);
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audio_attach_mi(&vidcaudio_hw_if, sc, &sc->device);
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#ifdef VIDCAUDIO_DEBUG
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printf(" UNDER DEVELOPMENT (nuts)\n");
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#endif
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audio_attach_mi(&vidcaudio_hw_if, sc, self);
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}
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int
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vidcaudio_open(void *addr, int flags)
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{
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struct vidcaudio_softc *sc = addr;
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#ifdef VIDCAUDIO_DEBUG
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printf("DEBUG: vidcaudio_open called\n");
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#endif
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if (sc->open)
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return EBUSY;
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sc->open = 1;
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ag.open = 1;
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return 0;
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}
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void
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vidcaudio_close(void *addr)
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{
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struct vidcaudio_softc *sc = addr;
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vidcaudio_shutdown();
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#ifdef VIDCAUDIO_DEBUG
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printf("DEBUG: vidcaudio_close called\n");
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#endif
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sc->open = 0;
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ag.open = 0;
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}
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/*
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@ -296,113 +273,214 @@ vidcaudio_close(void *addr)
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int
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vidcaudio_query_encoding(void *addr, struct audio_encoding *fp)
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{
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struct vidcaudio_softc *sc = addr;
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switch (fp->index) {
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case 0:
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strcpy(fp->name, "vidc");
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strcpy(fp->name, AudioEmulaw);
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fp->encoding = AUDIO_ENCODING_ULAW;
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fp->precision = 8;
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fp->flags = 0;
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if (sc->sc_hw_encoding != AUDIO_ENCODING_ULAW)
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fp->flags = AUDIO_ENCODINGFLAG_EMULATED;
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else
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fp->flags = 0;
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break;
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case 1:
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if (sc->sc_hw_encoding == AUDIO_ENCODING_SLINEAR_LE) {
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strcpy(fp->name, AudioEslinear_le);
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fp->encoding = AUDIO_ENCODING_SLINEAR_LE;
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fp->precision = 16;
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fp->flags = 0;
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break;
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}
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/* FALLTHROUGH */
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default:
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return EINVAL;
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}
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return 0;
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}
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#define MULAW_TO_VIDC(m) (~(m) << 1 | (m) >> 7)
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void
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mulaw_to_vidc(void *v, u_char *p, int cc)
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{
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while (--cc >= 0) {
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*p = MULAW_TO_VIDC(*p);
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++p;
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}
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}
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void
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mulaw_to_vidc_stereo(void *v, u_char *p, int cc)
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{
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u_char *q = p;
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p += cc;
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q += cc * 2;
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while (--cc >= 0) {
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q -= 2;
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--p;
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q[0] = q[1] = MULAW_TO_VIDC(*p);
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}
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}
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int
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vidcaudio_set_params(void *addr, int setmode, int usemode,
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struct audio_params *p, struct audio_params *r)
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{
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struct vidcaudio_softc *sc = addr;
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int sample_period, ch;
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if (p->encoding != AUDIO_ENCODING_ULAW)
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return EINVAL;
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/* FIXME Handle number of channels properly. */
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vidcaudio_rate(4 * p->sample_rate / (3 * 1024)); /* XXX probably wrong */
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if (setmode & AUMODE_PLAY) {
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switch (sc->sc_hw_encoding) {
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case AUDIO_ENCODING_ULAW:
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/* VIDC20ish, u-law, 8-channel */
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if (p->encoding != AUDIO_ENCODING_ULAW ||
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p->precision != 8)
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return EINVAL;
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/*
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* We always use two hardware channels,
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* because using one at 8kHz gives a nasty
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* whining sound from the speaker. The
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* aurateconv mechanism doesn't support ulaw,
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* so we do the channel duplication ourselves,
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* and don't try to do rate conversion.
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*/
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switch (p->channels) {
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case 1:
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p->sw_code = mulaw_to_vidc_stereo;
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p->factor = 2; p->factor_denom = 1;
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break;
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case 2:
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p->sw_code = mulaw_to_vidc;
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p->factor = 1; p->factor_denom = 1;
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break;
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default:
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return EINVAL;
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}
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p->hw_channels = p->channels;
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sample_period =
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1000000 / 2 / p->sample_rate;
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if (sample_period < 3) sample_period = 3;
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p->hw_sample_rate = p->sample_rate =
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1000000 / 2 / sample_period;
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p->hw_encoding = AUDIO_ENCODING_NONE;
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p->hw_precision = 8;
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vidcaudio_rate(sample_period - 2);
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vidcaudio_ctrl(SCR_SDAC | SCR_CLKSEL);
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if (p->hw_channels == 1)
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for (ch = 0; ch < 8; ch++)
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vidcaudio_stereo(ch, SIR_CENTRE);
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else
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for (ch = 0; ch < 8; ch++)
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vidcaudio_stereo(ch, ch & 1 ?
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SIR_LEFT_100 : SIR_RIGHT_100);
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break;
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return 0;
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}
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int
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vidcaudio_round_blocksize(void *addr, int blk)
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{
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|
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if (blk > PAGE_SIZE)
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blk = PAGE_SIZE;
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return (blk);
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}
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#define ROUND(s) ( ((int)s) & (~(PAGE_SIZE-1)) )
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|
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int
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vidcaudio_start_output(void *addr, void *p, int cc, void (*intr)(void *),
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void *arg)
|
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{
|
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|
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/* I can only DMA inside 1 page */
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#ifdef VIDCAUDIO_DEBUG
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printf("vidcaudio_start_output (%d) %p %p\n", cc, intr, arg);
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#endif
|
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|
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if (ROUND(p) != ROUND(p+cc)) {
|
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/*
|
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* If it's over a page I can fix it up by copying it into
|
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* my buffer
|
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*/
|
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|
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#ifdef VIDCAUDIO_DEBUG
|
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printf("vidcaudio: DMA over page boundary requested."
|
||||
" Fixing up\n");
|
||||
#endif
|
||||
memcpy(p, (char *)ag.silence, cc > PAGE_SIZE ? PAGE_SIZE : cc);
|
||||
p = (void *)ag.silence;
|
||||
|
||||
/*
|
||||
* I can't DMA any more than that, but it is possible to
|
||||
* fix it up by handling multiple buffers and only
|
||||
* interrupting the audio driver after sending out all the
|
||||
* stuff it gave me. That it more than I can be bothered
|
||||
* to do right now and it probablly wont happen so I'll just
|
||||
* truncate the buffer and tell the user.
|
||||
*/
|
||||
|
||||
if (cc > PAGE_SIZE) {
|
||||
printf("vidcaudio: DMA buffer truncated. I could fix this up\n");
|
||||
cc = PAGE_SIZE;
|
||||
case AUDIO_ENCODING_SLINEAR_LE:
|
||||
/* ARM7500ish, 16-bit, two-channel */
|
||||
if (p->encoding == AUDIO_ENCODING_ULAW &&
|
||||
p->precision == 8) {
|
||||
p->sw_code = mulaw_to_slinear16_le;
|
||||
p->factor = 2; p->factor_denom = 1;
|
||||
} else if (p->encoding != AUDIO_ENCODING_SLINEAR_LE ||
|
||||
p->precision != 16)
|
||||
return EINVAL;
|
||||
p->hw_channels = 2;
|
||||
sample_period = 705600 / 4 / p->sample_rate;
|
||||
if (sample_period < 3) sample_period = 3;
|
||||
p->hw_sample_rate =
|
||||
1000000 / 4 / sample_period;
|
||||
vidcaudio_rate(sample_period - 2);
|
||||
vidcaudio_ctrl(SCR_SERIAL);
|
||||
p->hw_encoding = AUDIO_ENCODING_SLINEAR_LE;
|
||||
p->hw_precision = 16;
|
||||
break;
|
||||
}
|
||||
}
|
||||
vidcaudio_dma_program((vaddr_t)p, (vaddr_t)((char *)p+cc),
|
||||
intr, arg);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
vidcaudio_start_input(void *addr, void *p, int cc, void (*intr)(void *),
|
||||
void *arg)
|
||||
vidcaudio_round_blocksize(void *addr, int wantblk)
|
||||
{
|
||||
return EIO;
|
||||
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;
|
||||
}
|
||||
|
||||
int
|
||||
vidcaudio_trigger_output(void *addr, void *start, void *end, int blksize,
|
||||
void (*intr)(void *), void *arg, struct audio_params *params)
|
||||
{
|
||||
struct vidcaudio_softc *sc = addr;
|
||||
|
||||
KASSERT(blksize == vidcaudio_round_blocksize(addr, blksize));
|
||||
|
||||
#ifdef VIDCAUDIO_DEBUG
|
||||
printf("vidcaudio_trigger_output %p-%p/0x%x\n",
|
||||
start, end, blksize);
|
||||
#endif
|
||||
|
||||
sc->sc_pstart = start;
|
||||
sc->sc_pend = end;
|
||||
sc->sc_pblksize = blksize;
|
||||
sc->sc_pnext = start;
|
||||
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;
|
||||
}
|
||||
|
||||
int
|
||||
vidcaudio_trigger_input(void *addr, void *start, void *end, int blksize,
|
||||
void (*intr)(void *), void *arg, struct audio_params *params)
|
||||
{
|
||||
|
||||
return ENODEV;
|
||||
}
|
||||
|
||||
int
|
||||
vidcaudio_halt_output(void *addr)
|
||||
{
|
||||
struct vidcaudio_softc *sc = addr;
|
||||
|
||||
#ifdef VIDCAUDIO_DEBUG
|
||||
printf("DEBUG: vidcaudio_halt_output\n");
|
||||
printf("vidcaudio_halt_output\n");
|
||||
#endif
|
||||
return EIO;
|
||||
IOMD_WRITE_WORD(IOMD_SD0CR, IOMD_DMACR_CLEAR | IOMD_DMACR_QUADWORD);
|
||||
disable_irq(sc->sc_dma_intr);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
vidcaudio_halt_input(void *addr)
|
||||
{
|
||||
|
||||
#ifdef VIDCAUDIO_DEBUG
|
||||
printf("DEBUG: vidcaudio_halt_input\n");
|
||||
#endif
|
||||
return EIO;
|
||||
return ENODEV;
|
||||
}
|
||||
|
||||
int
|
||||
|
|
@ -442,224 +520,75 @@ vidcaudio_get_props(void *addr)
|
|||
return 0;
|
||||
}
|
||||
void
|
||||
vidcaudio_dummy_routine(void *arg)
|
||||
{
|
||||
|
||||
#ifdef VIDCAUDIO_DEBUG
|
||||
printf("vidcaudio_dummy_routine\n");
|
||||
#endif
|
||||
}
|
||||
|
||||
int
|
||||
vidcaudio_rate(int rate)
|
||||
{
|
||||
|
||||
WriteWord(vidc_base, VIDC_SFR | rate);
|
||||
return 0;
|
||||
}
|
||||
|
||||
int
|
||||
vidcaudio_stereo(int channel, int position)
|
||||
{
|
||||
|
||||
if (channel < 0) return EINVAL;
|
||||
if (channel > 7) return EINVAL;
|
||||
channel = channel << 24 | VIDC_SIR0;
|
||||
WriteWord(vidc_base, channel | position);
|
||||
return 0;
|
||||
}
|
||||
|
||||
#define PHYS(x, y) pmap_extract(pmap_kernel(), ((x)&L2_S_FRAME), (paddr_t *)(y))
|
||||
|
||||
/*
|
||||
* Program the next buffer to be used
|
||||
* This function must be re-entrant, maximum re-entrancy of 2
|
||||
*/
|
||||
|
||||
#define FLAGS (0)
|
||||
|
||||
int
|
||||
vidcaudio_dma_program(vaddr_t cur, vaddr_t end, void (*intr)(void *),
|
||||
void *arg)
|
||||
{
|
||||
paddr_t pa1, pa2;
|
||||
|
||||
/* If there isn't a transfer in progress then start a new one */
|
||||
if (ag.in_progress == 0) {
|
||||
ag.buffer = 0;
|
||||
IOMD_WRITE_WORD(IOMD_SD0CR, 0x90); /* Reset State Machine */
|
||||
IOMD_WRITE_WORD(IOMD_SD0CR, 0x30); /* Reset State Machine */
|
||||
|
||||
PHYS(cur, &pa1);
|
||||
PHYS(end - 16, &pa2);
|
||||
|
||||
IOMD_WRITE_WORD(IOMD_SD0CURB, pa1);
|
||||
IOMD_WRITE_WORD(IOMD_SD0ENDB, pa2|FLAGS);
|
||||
IOMD_WRITE_WORD(IOMD_SD0CURA, pa1);
|
||||
IOMD_WRITE_WORD(IOMD_SD0ENDA, pa2|FLAGS);
|
||||
|
||||
ag.in_progress = 1;
|
||||
|
||||
ag.next_cur = ag.next_end = 0;
|
||||
ag.next_intr = ag.next_arg = 0;
|
||||
|
||||
ag.intr = intr;
|
||||
ag.arg = arg;
|
||||
|
||||
/*
|
||||
* The driver 'clicks' between buffer swaps, leading me
|
||||
* to think that the fifo is much small than on other
|
||||
* sound cards so I'm going to have to do some tricks here
|
||||
*/
|
||||
|
||||
(*ag.intr)(ag.arg); /* Schedule the next buffer */
|
||||
ag.intr = vidcaudio_dummy_routine; /* Already done this */
|
||||
ag.arg = NULL;
|
||||
|
||||
#ifdef PRINT
|
||||
printf("vidcaudio: start output\n");
|
||||
#endif
|
||||
#ifdef VIDCAUDIO_DEBUG
|
||||
printf("SE");
|
||||
#endif
|
||||
enable_irq(sound_dma_intr);
|
||||
} else {
|
||||
/* Otherwise schedule the next one */
|
||||
if (ag.next_cur != 0) {
|
||||
/* If there's one scheduled then complain */
|
||||
printf("vidcaudio: Buffer already Q'ed\n");
|
||||
return EIO;
|
||||
} else {
|
||||
/* We're OK to schedule it now */
|
||||
ag.buffer = (++ag.buffer) & 1;
|
||||
PHYS(cur, &ag.next_cur);
|
||||
PHYS(end - 16, &ag.next_end);
|
||||
ag.next_intr = intr;
|
||||
ag.next_arg = arg;
|
||||
#ifdef VIDCAUDIO_DEBUG
|
||||
printf("s");
|
||||
#endif
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
void
|
||||
vidcaudio_shutdown(void)
|
||||
vidcaudio_ctrl(int ctrl)
|
||||
{
|
||||
|
||||
/* Shut down the channel */
|
||||
ag.intr = NULL;
|
||||
ag.in_progress = 0;
|
||||
#ifdef PRINT
|
||||
printf("vidcaudio: stop output\n");
|
||||
#endif
|
||||
IOMD_WRITE_WORD(IOMD_SD0CURB, ag.silence);
|
||||
IOMD_WRITE_WORD(IOMD_SD0ENDB,
|
||||
(ag.silence + PAGE_SIZE - 16) | (1 << 30));
|
||||
disable_irq(sound_dma_intr);
|
||||
WriteWord(vidc_base, VIDC_SCR | ctrl);
|
||||
}
|
||||
|
||||
void
|
||||
vidcaudio_stereo(int channel, int position)
|
||||
{
|
||||
|
||||
channel = channel << 24 | VIDC_SIR0;
|
||||
WriteWord(vidc_base, channel | position);
|
||||
}
|
||||
|
||||
int
|
||||
vidcaudio_intr(void *arg)
|
||||
{
|
||||
int status = IOMD_READ_BYTE(IOMD_SD0ST);
|
||||
void (*nintr)(void *);
|
||||
void *narg;
|
||||
void (*xintr)(void *);
|
||||
void *xarg;
|
||||
int xcur, xend;
|
||||
struct vidcaudio_softc *sc = arg;
|
||||
int status;
|
||||
paddr_t pnext, pend;
|
||||
|
||||
IOMD_WRITE_WORD(IOMD_DMARQ, 0x10);
|
||||
|
||||
#ifdef PRINT
|
||||
printf ( "I" );
|
||||
status = IOMD_READ_BYTE(IOMD_SD0ST);
|
||||
#ifdef VIDCAUDIO_DEBUG
|
||||
printf ( "I[%x]", status );
|
||||
#endif
|
||||
|
||||
if (ag.open == 0) {
|
||||
vidcaudio_shutdown();
|
||||
if ((status & IOMD_DMAST_INT) == 0)
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Have I got the generic audio device attached */
|
||||
/* FIXME: Not really allowed to use pmap here. */
|
||||
pmap_extract(pmap_kernel(), (vaddr_t)sc->sc_pnext, &pnext);
|
||||
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):
|
||||
#ifdef VIDCAUDIO_DEBUG
|
||||
printf ( "[B%01x]", status );
|
||||
printf("B<0x%08lx,0x%03lx>", pnext, pend);
|
||||
#endif
|
||||
IOMD_WRITE_WORD(IOMD_SD0CURB, pnext);
|
||||
IOMD_WRITE_WORD(IOMD_SD0ENDB, pend);
|
||||
break;
|
||||
|
||||
nintr = ag.intr;
|
||||
narg = ag.arg;
|
||||
ag.intr = NULL;
|
||||
|
||||
xintr = ag.next_intr;
|
||||
xarg = ag.next_arg;
|
||||
xcur = ag.next_cur;
|
||||
xend = ag.next_end;
|
||||
ag.next_cur = 0;
|
||||
ag.intr = xintr;
|
||||
ag.arg = xarg;
|
||||
|
||||
if (nintr) {
|
||||
case (IOMD_DMAST_INT | IOMD_DMAST_BANKB):
|
||||
case (IOMD_DMAST_OVERRUN | IOMD_DMAST_INT | IOMD_DMAST_BANKA):
|
||||
#ifdef VIDCAUDIO_DEBUG
|
||||
printf("i");
|
||||
printf("A<0x%08lx,0x%03lx>", pnext, pend);
|
||||
#endif
|
||||
(*nintr)(narg);
|
||||
IOMD_WRITE_WORD(IOMD_SD0CURA, pnext);
|
||||
IOMD_WRITE_WORD(IOMD_SD0ENDA, pend);
|
||||
break;
|
||||
}
|
||||
|
||||
if (xcur == 0) {
|
||||
vidcaudio_shutdown();
|
||||
} else {
|
||||
#define OVERRUN (0x04)
|
||||
#define INTERRUPT (0x02)
|
||||
#define BANK_A (0x00)
|
||||
#define BANK_B (0x01)
|
||||
switch (status & 0x7) {
|
||||
case (INTERRUPT|BANK_A):
|
||||
#ifdef PRINT
|
||||
printf("B");
|
||||
#endif
|
||||
IOMD_WRITE_WORD(IOMD_SD0CURB, xcur);
|
||||
IOMD_WRITE_WORD(IOMD_SD0ENDB, xend|FLAGS);
|
||||
break;
|
||||
sc->sc_pnext = (char *)sc->sc_pnext + sc->sc_pblksize;
|
||||
if (sc->sc_pnext >= sc->sc_pend)
|
||||
sc->sc_pnext = sc->sc_pstart;
|
||||
|
||||
if (sc->sc_pcountdown > 0)
|
||||
sc->sc_pcountdown--;
|
||||
else
|
||||
(*sc->sc_pintr)(sc->sc_parg);
|
||||
|
||||
case (INTERRUPT|BANK_B):
|
||||
#ifdef PRINT
|
||||
printf("A");
|
||||
#endif
|
||||
IOMD_WRITE_WORD(IOMD_SD0CURA, xcur);
|
||||
IOMD_WRITE_WORD(IOMD_SD0ENDA, xend|FLAGS);
|
||||
break;
|
||||
|
||||
case (OVERRUN|INTERRUPT|BANK_A):
|
||||
#ifdef PRINT
|
||||
printf("A");
|
||||
#endif
|
||||
IOMD_WRITE_WORD(IOMD_SD0CURA, xcur);
|
||||
IOMD_WRITE_WORD(IOMD_SD0ENDA, xend|FLAGS);
|
||||
break;
|
||||
|
||||
case (OVERRUN|INTERRUPT|BANK_B):
|
||||
#ifdef PRINT
|
||||
printf("B");
|
||||
#endif
|
||||
IOMD_WRITE_WORD(IOMD_SD0CURB, xcur);
|
||||
IOMD_WRITE_WORD(IOMD_SD0ENDB, xend|FLAGS);
|
||||
break;
|
||||
}
|
||||
/*
|
||||
ag.next_cur = 0;
|
||||
ag.intr = xintr;
|
||||
ag.arg = xarg;
|
||||
*/
|
||||
}
|
||||
#ifdef PRINT
|
||||
printf ( "i" );
|
||||
#endif
|
||||
|
||||
if (ag.next_cur == 0) {
|
||||
(*ag.intr)(ag.arg); /* Schedule the next buffer */
|
||||
ag.intr = vidcaudio_dummy_routine; /* Already done this */
|
||||
ag.arg = NULL;
|
||||
}
|
||||
return 0 ; /* Pass interrupt on down the chain */
|
||||
return 1;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue