NetBSD-5.0.2/sys/dev/ebus/cs4231_ebus.c
/* $NetBSD: cs4231_ebus.c,v 1.26 2008/04/29 18:08:03 ad Exp $ */
/*
* Copyright (c) 2002 Valeriy E. Ushakov
* 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.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: cs4231_ebus.c,v 1.26 2008/04/29 18:08:03 ad Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/cpu.h>
#include <machine/autoconf.h>
#include <dev/ebus/ebusreg.h>
#include <dev/ebus/ebusvar.h>
#include <sys/audioio.h>
#include <dev/audio_if.h>
#include <dev/ic/ad1848reg.h>
#include <dev/ic/cs4231reg.h>
#include <dev/ic/ad1848var.h>
#include <dev/ic/cs4231var.h>
#ifdef AUDIO_DEBUG
int cs4231_ebus_debug = 0;
#define DPRINTF(x) if (cs4231_ebus_debug) printf x
#else
#define DPRINTF(x)
#endif
struct cs4231_ebus_softc {
struct cs4231_softc sc_cs4231;
void *sc_pint;
void *sc_rint;
bus_space_tag_t sc_bt;
bus_space_handle_t sc_pdmareg; /* playback DMA */
bus_space_handle_t sc_cdmareg; /* record DMA */
};
void cs4231_ebus_attach(struct device *, struct device *, void *);
int cs4231_ebus_match(struct device *, struct cfdata *, void *);
static int cs4231_ebus_pint(void *);
static int cs4231_ebus_rint(void *);
CFATTACH_DECL(audiocs_ebus, sizeof(struct cs4231_ebus_softc),
cs4231_ebus_match, cs4231_ebus_attach, NULL, NULL);
/* audio_hw_if methods specific to ebus DMA */
static int cs4231_ebus_round_blocksize(void *, int, int,
const audio_params_t *);
static int cs4231_ebus_trigger_output(void *, void *, void *, int,
void (*)(void *), void *,
const audio_params_t *);
static int cs4231_ebus_trigger_input(void *, void *, void *, int,
void (*)(void *), void *,
const audio_params_t *);
static int cs4231_ebus_halt_output(void *);
static int cs4231_ebus_halt_input(void *);
const struct audio_hw_if audiocs_ebus_hw_if = {
cs4231_open,
cs4231_close,
NULL, /* drain */
ad1848_query_encoding,
ad1848_set_params,
cs4231_ebus_round_blocksize,
ad1848_commit_settings,
NULL, /* init_output */
NULL, /* init_input */
NULL, /* start_output */
NULL, /* start_input */
cs4231_ebus_halt_output,
cs4231_ebus_halt_input,
NULL, /* speaker_ctl */
cs4231_getdev,
NULL, /* setfd */
cs4231_set_port,
cs4231_get_port,
cs4231_query_devinfo,
cs4231_malloc,
cs4231_free,
NULL, /* round_buffersize */
NULL, /* mappage */
cs4231_get_props,
cs4231_ebus_trigger_output,
cs4231_ebus_trigger_input,
NULL, /* dev_ioctl */
NULL, /* powerstate */
};
#ifdef AUDIO_DEBUG
static void cs4231_ebus_regdump(char *, struct cs4231_ebus_softc *);
#endif
static int cs4231_ebus_dma_reset(bus_space_tag_t, bus_space_handle_t);
static int cs4231_ebus_trigger_transfer(struct cs4231_softc *,
struct cs_transfer *,
bus_space_tag_t, bus_space_handle_t,
int, void *, void *, int, void (*)(void *), void *,
const audio_params_t *);
static void cs4231_ebus_dma_advance(struct cs_transfer *,
bus_space_tag_t, bus_space_handle_t);
static int cs4231_ebus_dma_intr(struct cs_transfer *,
bus_space_tag_t, bus_space_handle_t,
void *);
static int cs4231_ebus_intr(void *);
int
cs4231_ebus_match(struct device *parent, struct cfdata *cf, void *aux)
{
struct ebus_attach_args *ea;
ea = aux;
if (strcmp(ea->ea_name, AUDIOCS_PROM_NAME) == 0)
return 1;
#ifdef __sparc__ /* XXX: Krups */
if (strcmp(ea->ea_name, "sound") == 0)
return 1;
#endif
return 0;
}
void
cs4231_ebus_attach(struct device *parent, struct device *self, void *aux)
{
struct cs4231_ebus_softc *ebsc;
struct cs4231_softc *sc;
struct ebus_attach_args *ea;
bus_space_handle_t bh;
int i;
ebsc = device_private(self);
sc = &ebsc->sc_cs4231;
ea = aux;
sc->sc_bustag = ebsc->sc_bt = ea->ea_bustag;
sc->sc_dmatag = ea->ea_dmatag;
ebsc->sc_pint = sparc_softintr_establish(IPL_VM,
(void *)cs4231_ebus_pint, sc);
ebsc->sc_rint = sparc_softintr_establish(IPL_VM,
(void *)cs4231_ebus_rint, sc);
/*
* These are the register we get from the prom:
* - CS4231 registers
* - Playback EBus DMA controller
* - Capture EBus DMA controller
* - AUXIO audio register (codec powerdown)
*
* Map my registers in, if they aren't already in virtual
* address space.
*/
if (bus_space_map(ea->ea_bustag, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]),
ea->ea_reg[0].size, 0, &bh) != 0) {
printf(": unable to map registers\n");
return;
}
/* XXX: map playback DMA registers (we just know where they are) */
if (bus_space_map(ea->ea_bustag,
BUS_ADDR(0x14, 0x702000), /* XXX: magic num */
EBUS_DMAC_SIZE,
0, &ebsc->sc_pdmareg) != 0)
{
printf(": unable to map playback DMA registers\n");
return;
}
/* XXX: map capture DMA registers (we just know where they are) */
if (bus_space_map(ea->ea_bustag,
BUS_ADDR(0x14, 0x704000), /* XXX: magic num */
EBUS_DMAC_SIZE,
0, &ebsc->sc_cdmareg) != 0)
{
printf(": unable to map capture DMA registers\n");
return;
}
/* establish interrupt channels */
for (i = 0; i < ea->ea_nintr; ++i)
bus_intr_establish(ea->ea_bustag,
ea->ea_intr[i], IPL_SCHED,
cs4231_ebus_intr, ebsc);
cs4231_common_attach(sc, bh);
printf("\n");
/* XXX: todo: move to cs4231_common_attach, pass hw_if as arg? */
audio_attach_mi(&audiocs_ebus_hw_if, sc, &sc->sc_ad1848.sc_dev);
}
static int
cs4231_ebus_round_blocksize(void *addr, int blk, int mode,
const audio_params_t *param)
{
/* we want to use DMA burst size of 16 words */
return blk & -64;
}
#ifdef AUDIO_DEBUG
static void
cs4231_ebus_regdump(char *label, struct cs4231_ebus_softc *ebsc)
{
/* char bits[128]; */
printf("cs4231regdump(%s): regs:", label);
/* XXX: dump ebus DMA and aux registers */
ad1848_dump_regs(&ebsc->sc_cs4231.sc_ad1848);
}
#endif /* AUDIO_DEBUG */
/* XXX: nothing CS4231-specific in this code... */
static int
cs4231_ebus_dma_reset(bus_space_tag_t dt, bus_space_handle_t dh)
{
u_int32_t csr;
int timo;
/* reset, also clear TC, just in case */
bus_space_write_4(dt, dh, EBUS_DMAC_DCSR, EBDMA_RESET | EBDMA_TC);
for (timo = 50000; timo != 0; --timo) {
csr = bus_space_read_4(dt, dh, EBUS_DMAC_DCSR);
if ((csr & (EBDMA_CYC_PEND | EBDMA_DRAIN)) == 0)
break;
}
if (timo == 0) {
char bits[128];
printf("cs4231_ebus_dma_reset: timed out: csr=%s\n",
bitmask_snprintf(csr, EBUS_DCSR_BITS,
bits, sizeof(bits)));
return ETIMEDOUT;
}
bus_space_write_4(dt, dh, EBUS_DMAC_DCSR, csr & ~EBDMA_RESET);
return 0;
}
static void
cs4231_ebus_dma_advance(struct cs_transfer *t, bus_space_tag_t dt,
bus_space_handle_t dh)
{
bus_addr_t dmaaddr;
bus_size_t dmasize;
cs4231_transfer_advance(t, &dmaaddr, &dmasize);
bus_space_write_4(dt, dh, EBUS_DMAC_DNBR, (u_int32_t)dmasize);
bus_space_write_4(dt, dh, EBUS_DMAC_DNAR, (u_int32_t)dmaaddr);
}
/*
* Trigger transfer "t" using DMA controller at "dt"/"dh".
* "iswrite" defines direction of the transfer.
*/
static int
cs4231_ebus_trigger_transfer(
struct cs4231_softc *sc,
struct cs_transfer *t,
bus_space_tag_t dt,
bus_space_handle_t dh,
int iswrite,
void *start, void *end,
int blksize,
void (*intr)(void *),
void *arg,
const audio_params_t *param)
{
uint32_t csr;
bus_addr_t dmaaddr;
bus_size_t dmasize;
int ret;
ret = cs4231_transfer_init(sc, t, &dmaaddr, &dmasize,
start, end, blksize, intr, arg);
if (ret != 0)
return ret;
ret = cs4231_ebus_dma_reset(dt, dh);
if (ret != 0)
return ret;
csr = bus_space_read_4(dt, dh, EBUS_DMAC_DCSR);
bus_space_write_4(dt, dh, EBUS_DMAC_DCSR,
csr | EBDMA_EN_NEXT | (iswrite ? EBDMA_WRITE : 0)
| EBDMA_EN_DMA | EBDMA_EN_CNT | EBDMA_INT_EN
| EBDMA_BURST_SIZE_16);
/* first load: propagated to DACR/DBCR */
bus_space_write_4(dt, dh, EBUS_DMAC_DNBR, (uint32_t)dmasize);
bus_space_write_4(dt, dh, EBUS_DMAC_DNAR, (uint32_t)dmaaddr);
/* next load: goes to DNAR/DNBR */
cs4231_ebus_dma_advance(t, dt, dh);
return 0;
}
static int
cs4231_ebus_trigger_output(void *addr, void *start, void *end, int blksize,
void (*intr)(void *), void *arg,
const audio_params_t *param)
{
struct cs4231_ebus_softc *ebsc;
struct cs4231_softc *sc;
int cfg, ret;
ebsc = addr;
sc = &ebsc->sc_cs4231;
ret = cs4231_ebus_trigger_transfer(sc, &sc->sc_playback,
ebsc->sc_bt, ebsc->sc_pdmareg,
0, /* iswrite */
start, end, blksize,
intr, arg, param);
if (ret != 0)
return ret;
ad_write(&sc->sc_ad1848, SP_LOWER_BASE_COUNT, 0xff);
ad_write(&sc->sc_ad1848, SP_UPPER_BASE_COUNT, 0xff);
cfg = ad_read(&sc->sc_ad1848, SP_INTERFACE_CONFIG);
ad_write(&sc->sc_ad1848, SP_INTERFACE_CONFIG, cfg | PLAYBACK_ENABLE);
return 0;
}
static int
cs4231_ebus_trigger_input(void *addr, void *start, void *end, int blksize,
void (*intr)(void *), void *arg,
const audio_params_t *param)
{
struct cs4231_ebus_softc *ebsc;
struct cs4231_softc *sc;
int cfg, ret;
ebsc = addr;
sc = &ebsc->sc_cs4231;
ret = cs4231_ebus_trigger_transfer(sc, &sc->sc_capture,
ebsc->sc_bt, ebsc->sc_cdmareg,
1, /* iswrite */
start, end, blksize,
intr, arg, param);
if (ret != 0)
return ret;
ad_write(&sc->sc_ad1848, CS_LOWER_REC_CNT, 0xff);
ad_write(&sc->sc_ad1848, CS_UPPER_REC_CNT, 0xff);
cfg = ad_read(&sc->sc_ad1848, SP_INTERFACE_CONFIG);
ad_write(&sc->sc_ad1848, SP_INTERFACE_CONFIG, cfg | CAPTURE_ENABLE);
return 0;
}
static int
cs4231_ebus_halt_output(void *addr)
{
struct cs4231_ebus_softc *ebsc;
struct cs4231_softc *sc;
u_int32_t csr;
int cfg;
ebsc = addr;
sc = &ebsc->sc_cs4231;
sc->sc_playback.t_active = 0;
csr = bus_space_read_4(ebsc->sc_bt, ebsc->sc_pdmareg, EBUS_DMAC_DCSR);
bus_space_write_4(ebsc->sc_bt, ebsc->sc_pdmareg, EBUS_DMAC_DCSR,
csr & ~EBDMA_EN_DMA);
cfg = ad_read(&sc->sc_ad1848, SP_INTERFACE_CONFIG);
ad_write(&sc->sc_ad1848, SP_INTERFACE_CONFIG,
cfg & ~PLAYBACK_ENABLE);
return 0;
}
static int
cs4231_ebus_halt_input(void *addr)
{
struct cs4231_ebus_softc *ebsc;
struct cs4231_softc *sc;
uint32_t csr;
int cfg;
ebsc = addr;
sc = &ebsc->sc_cs4231;
sc->sc_capture.t_active = 0;
csr = bus_space_read_4(ebsc->sc_bt, ebsc->sc_cdmareg, EBUS_DMAC_DCSR);
bus_space_write_4(ebsc->sc_bt, ebsc->sc_cdmareg, EBUS_DMAC_DCSR,
csr & ~EBDMA_EN_DMA);
cfg = ad_read(&sc->sc_ad1848, SP_INTERFACE_CONFIG);
ad_write(&sc->sc_ad1848, SP_INTERFACE_CONFIG,
cfg & ~CAPTURE_ENABLE);
return 0;
}
static int
cs4231_ebus_dma_intr(struct cs_transfer *t, bus_space_tag_t dt,
bus_space_handle_t dh, void *sih)
{
uint32_t csr;
#ifdef AUDIO_DEBUG
char bits[128];
#endif
/* read DMA status, clear TC bit by writing it back */
csr = bus_space_read_4(dt, dh, EBUS_DMAC_DCSR);
bus_space_write_4(dt, dh, EBUS_DMAC_DCSR, csr);
DPRINTF(("audiocs: %s dcsr=%s\n", t->t_name,
bitmask_snprintf(csr, EBUS_DCSR_BITS, bits, sizeof(bits))));
if (csr & EBDMA_ERR_PEND) {
++t->t_ierrcnt.ev_count;
printf("audiocs: %s DMA error, resetting\n", t->t_name);
cs4231_ebus_dma_reset(dt, dh);
/* how to notify audio(9)??? */
return 1;
}
if ((csr & EBDMA_INT_PEND) == 0)
return 0;
++t->t_intrcnt.ev_count;
if ((csr & EBDMA_TC) == 0) { /* can this happen? */
printf("audiocs: %s INT_PEND but !TC\n", t->t_name);
return 1;
}
if (!t->t_active)
return 1;
cs4231_ebus_dma_advance(t, dt, dh);
/* call audio(9) framework while DMA is chugging along */
if (t->t_intr != NULL)
sparc_softintr_schedule(sih);
return 1;
}
static int
cs4231_ebus_intr(void *arg)
{
struct cs4231_ebus_softc *ebsc;
struct cs4231_softc *sc;
int status;
int ret;
#ifdef AUDIO_DEBUG
char bits[128];
#endif
ebsc = arg;
sc = &ebsc->sc_cs4231;
status = ADREAD(&sc->sc_ad1848, AD1848_STATUS);
#ifdef AUDIO_DEBUG
if (cs4231_ebus_debug > 1)
cs4231_ebus_regdump("audiointr", ebsc);
DPRINTF(("%s: status: %s\n", device_xname(&sc->sc_ad1848.sc_dev),
bitmask_snprintf(status, AD_R2_BITS, bits, sizeof(bits))));
#endif
if (status & INTERRUPT_STATUS) {
#ifdef AUDIO_DEBUG
int reason;
reason = ad_read(&sc->sc_ad1848, CS_IRQ_STATUS);
DPRINTF(("%s: i24: %s\n", device_xname(&sc->sc_ad1848.sc_dev),
bitmask_snprintf(reason, CS_I24_BITS, bits, sizeof(bits))));
#endif
/* clear interrupt from ad1848 */
ADWRITE(&sc->sc_ad1848, AD1848_STATUS, 0);
}
ret = 0;
if (cs4231_ebus_dma_intr(&sc->sc_capture, ebsc->sc_bt,
ebsc->sc_cdmareg, ebsc->sc_rint) != 0)
{
++sc->sc_intrcnt.ev_count;
ret = 1;
}
if (cs4231_ebus_dma_intr(&sc->sc_playback, ebsc->sc_bt,
ebsc->sc_pdmareg, ebsc->sc_pint) != 0)
{
++sc->sc_intrcnt.ev_count;
ret = 1;
}
return ret;
}
static int
cs4231_ebus_pint(void *cookie)
{
struct cs4231_softc *sc = cookie;
struct cs_transfer *t = &sc->sc_playback;
KERNEL_LOCK(1, NULL);
if (t->t_intr != NULL)
(*t->t_intr)(t->t_arg);
KERNEL_UNLOCK_ONE(NULL);
return 0;
}
static int
cs4231_ebus_rint(void *cookie)
{
struct cs4231_softc *sc = cookie;
struct cs_transfer *t = &sc->sc_capture;
KERNEL_LOCK(1, NULL);
if (t->t_intr != NULL)
(*t->t_intr)(t->t_arg);
KERNEL_UNLOCK_ONE(NULL);
return 0;
}