/* $NetBSD: auixp.c,v 1.55 2024/02/08 20:30:39 andvar Exp $ */
/*
* Copyright (c) 2004, 2005 Reinoud Zandijk <
[email protected]>
* 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. 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.
*/
/*
* NetBSD audio driver for ATI IXP-{150,200,...} audio driver hardware.
*
* Recording and playback has been tested OK on various sample rates and
* encodings.
*
* Known problems and issues :
* - SPDIF is untested and needs some work still (LED stays off)
* - 32 bit audio playback failed last time i tried but that might an AC'97
* codec support problem.
* - 32 bit recording works but can't try out playing: see above.
* - no suspend/resume support yet.
* - multiple codecs are `supported' but not tested; the implementation needs
* some cleaning up.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: auixp.c,v 1.55 2024/02/08 20:30:39 andvar Exp $");
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/null.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kmem.h>
#include <sys/device.h>
#include <sys/conf.h>
#include <sys/exec.h>
#include <sys/select.h>
#include <sys/audioio.h>
#include <sys/queue.h>
#include <sys/bus.h>
#include <sys/intr.h>
#include <dev/audio/audio_if.h>
#include <dev/ic/ac97var.h>
#include <dev/ic/ac97reg.h>
#include <dev/pci/pcidevs.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/auixpreg.h>
#include <dev/pci/auixpvar.h>
/* #define DEBUG_AUIXP */
/* why isn't this base address register not in the headerfile? */
#define PCI_CBIO 0x10
/* macro's used */
#define KERNADDR(p) ((void *)((p)->addr))
#define DMAADDR(p) ((p)->map->dm_segs[0].ds_addr)
/* the differences might be irrelevant */
enum {
IXP_200,
IXP_300,
IXP_400
};
/* our `cards' */
static const struct auixp_card_type {
uint16_t pci_vendor_id;
uint16_t pci_product_id;
int type;
} auixp_card_types[] = {
{ PCI_VENDOR_ATI, PCI_PRODUCT_ATI_IXP_AUDIO_200, IXP_200 },
{ PCI_VENDOR_ATI, PCI_PRODUCT_ATI_IXP_AUDIO_300, IXP_300 },
{ PCI_VENDOR_ATI, PCI_PRODUCT_ATI_IXP_AUDIO_400, IXP_400 },
{ 0, 0, 0 }
};
struct audio_device auixp_device = {
"ATI IXP audio",
"",
"auixp"
};
/*
* current AC'97 driver only supports SPDIF outputting channel 3&4 i.e. STEREO
*/
#define AUIXP_FORMAT(aumode, ch, chmask) \
{ \
.mode = (aumode), \
.encoding = AUDIO_ENCODING_SLINEAR_LE, \
.validbits = 16, \
.precision = 16, \
.channels = (ch), \
.channel_mask = (chmask), \
.frequency_type = 0, \
.frequency = { 7000, 48000 }, \
}
static const struct audio_format auixp_formats[AUIXP_NFORMATS] = {
AUIXP_FORMAT(AUMODE_PLAY | AUMODE_RECORD, 2, AUFMT_STEREO),
AUIXP_FORMAT(AUMODE_PLAY , 4, AUFMT_SURROUND4),
AUIXP_FORMAT(AUMODE_PLAY , 6, AUFMT_DOLBY_5_1),
};
/* codec detection constant indicating the interrupt flags */
#define ALL_CODECS_NOT_READY \
(ATI_REG_ISR_CODEC0_NOT_READY |\
ATI_REG_ISR_CODEC1_NOT_READY |\
ATI_REG_ISR_CODEC2_NOT_READY)
#define CODEC_CHECK_BITS (ALL_CODECS_NOT_READY|ATI_REG_ISR_NEW_FRAME)
/* autoconfig */
static int auixp_match(device_t, cfdata_t, void *);
static void auixp_attach(device_t, device_t, void *);
static int auixp_detach(device_t, int);
/* audio(9) function prototypes */
static int auixp_query_format(void *, audio_format_query_t *);
static int auixp_set_format(void *, int,
const audio_params_t *, const audio_params_t *,
audio_filter_reg_t *, audio_filter_reg_t *);
static int auixp_commit_settings(void *);
static int auixp_round_blocksize(void *, int, int, const audio_params_t *);
static int auixp_trigger_output(void *, void *, void *, int,
void (*)(void *),
void *, const audio_params_t *);
static int auixp_trigger_input(void *, void *, void *, int,
void (*)(void *),
void *, const audio_params_t *);
static int auixp_halt_output(void *);
static int auixp_halt_input(void *);
static int auixp_set_port(void *, mixer_ctrl_t *);
static int auixp_get_port(void *, mixer_ctrl_t *);
static int auixp_query_devinfo(void *, mixer_devinfo_t *);
static void * auixp_malloc(void *, int, size_t);
static void auixp_free(void *, void *, size_t);
static int auixp_getdev(void *, struct audio_device *);
static size_t auixp_round_buffersize(void *, int, size_t);
static int auixp_get_props(void *);
static int auixp_intr(void *);
static int auixp_allocmem(struct auixp_softc *, size_t, size_t,
struct auixp_dma *);
static int auixp_freemem(struct auixp_softc *, struct auixp_dma *);
/* Supporting subroutines */
static int auixp_init(struct auixp_softc *);
static void auixp_autodetect_codecs(struct auixp_softc *);
static void auixp_post_config(device_t);
static void auixp_reset_aclink(struct auixp_softc *);
static int auixp_attach_codec(void *, struct ac97_codec_if *);
static int auixp_read_codec(void *, uint8_t, uint16_t *);
static int auixp_write_codec(void *, uint8_t, uint16_t);
static int auixp_wait_for_codecs(struct auixp_softc *, const char *);
static int auixp_reset_codec(void *);
static enum ac97_host_flags auixp_flags_codec(void *);
static void auixp_enable_dma(struct auixp_softc *, struct auixp_dma *);
static void auixp_disable_dma(struct auixp_softc *, struct auixp_dma *);
static void auixp_enable_interrupts(struct auixp_softc *);
static void auixp_disable_interrupts(struct auixp_softc *);
/* statics */
static void auixp_link_daisychain(struct auixp_softc *,
struct auixp_dma *, struct auixp_dma *,
int, int);
static int auixp_allocate_dma_chain(struct auixp_softc *,
struct auixp_dma **);
static void auixp_program_dma_chain(struct auixp_softc *,
struct auixp_dma *);
static void auixp_dma_update(struct auixp_softc *, struct auixp_dma *);
static void auixp_update_busbusy(struct auixp_softc *);
static void auixp_get_locks(void *, kmutex_t **, kmutex_t **);
static bool auixp_resume(device_t, const pmf_qual_t *);
#ifdef DEBUG_AUIXP
static struct auixp_softc *static_sc;
static void auixp_dumpreg(void) __unused;
# define DPRINTF(x) printf x;
#else
# define DPRINTF(x)
#endif
static const struct audio_hw_if auixp_hw_if = {
.query_format = auixp_query_format,
.set_format = auixp_set_format,
.round_blocksize = auixp_round_blocksize,
.commit_settings = auixp_commit_settings,
.halt_output = auixp_halt_output,
.halt_input = auixp_halt_input,
.getdev = auixp_getdev,
.set_port = auixp_set_port,
.get_port = auixp_get_port,
.query_devinfo = auixp_query_devinfo,
.allocm = auixp_malloc,
.freem = auixp_free,
.round_buffersize = auixp_round_buffersize,
.get_props = auixp_get_props,
.trigger_output = auixp_trigger_output,
.trigger_input = auixp_trigger_input,
.get_locks = auixp_get_locks,
};
CFATTACH_DECL_NEW(auixp, sizeof(struct auixp_softc), auixp_match, auixp_attach,
auixp_detach, NULL);
/*
* audio(9) functions
*/
static int
auixp_query_format(void *hdl, audio_format_query_t *afp)
{
struct auixp_codec *co;
struct auixp_softc *sc;
co = (struct auixp_codec *) hdl;
sc = co->sc;
return audio_query_format(sc->sc_formats, AUIXP_NFORMATS, afp);
}
static int
auixp_set_rate(struct auixp_codec *co, int mode, u_int srate)
{
int ret;
u_int ratetmp;
ratetmp = srate;
if (mode == AUMODE_RECORD) {
ret = co->codec_if->vtbl->set_rate(co->codec_if,
AC97_REG_PCM_LR_ADC_RATE, &ratetmp);
return ret;
}
/* play mode */
ret = co->codec_if->vtbl->set_rate(co->codec_if,
AC97_REG_PCM_FRONT_DAC_RATE, &ratetmp);
if (ret)
return ret;
ratetmp = srate;
ret = co->codec_if->vtbl->set_rate(co->codec_if,
AC97_REG_PCM_SURR_DAC_RATE, &ratetmp);
if (ret)
return ret;
ratetmp = srate;
ret = co->codec_if->vtbl->set_rate(co->codec_if,
AC97_REG_PCM_LFE_DAC_RATE, &ratetmp);
return ret;
}
/* commit setting and program ATI IXP chip */
static int
auixp_commit_settings(void *hdl)
{
struct auixp_codec *co;
struct auixp_softc *sc;
bus_space_tag_t iot;
bus_space_handle_t ioh;
struct audio_params *params;
uint32_t value;
/* XXX would it be better to stop interrupts first? XXX */
co = (struct auixp_codec *) hdl;
sc = co->sc;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
/* process input settings */
params = &sc->sc_play_params;
/* set input interleaving (precision) */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
value &= ~ATI_REG_CMD_INTERLEAVE_IN;
if (params->precision <= 16)
value |= ATI_REG_CMD_INTERLEAVE_IN;
bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
/* process output settings */
params = &sc->sc_play_params;
value = bus_space_read_4(iot, ioh, ATI_REG_OUT_DMA_SLOT);
value &= ~ATI_REG_OUT_DMA_SLOT_MASK;
/* TODO SPDIF case for 8 channels */
switch (params->channels) {
case 6:
value |= ATI_REG_OUT_DMA_SLOT_BIT(7) |
ATI_REG_OUT_DMA_SLOT_BIT(8);
/* fallthru */
case 4:
value |= ATI_REG_OUT_DMA_SLOT_BIT(6) |
ATI_REG_OUT_DMA_SLOT_BIT(9);
/* fallthru */
default:
value |= ATI_REG_OUT_DMA_SLOT_BIT(3) |
ATI_REG_OUT_DMA_SLOT_BIT(4);
break;
}
/* set output threshold */
value |= 0x04 << ATI_REG_OUT_DMA_THRESHOLD_SHIFT;
bus_space_write_4(iot, ioh, ATI_REG_OUT_DMA_SLOT, value);
/* set output interleaving (precision) */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
value &= ~ATI_REG_CMD_INTERLEAVE_OUT;
if (params->precision <= 16)
value |= ATI_REG_CMD_INTERLEAVE_OUT;
bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
/* enable 6 channel reordering */
value = bus_space_read_4(iot, ioh, ATI_REG_6CH_REORDER);
value &= ~ATI_REG_6CH_REORDER_EN;
if (params->channels == 6)
value |= ATI_REG_6CH_REORDER_EN;
bus_space_write_4(iot, ioh, ATI_REG_6CH_REORDER, value);
if (sc->has_spdif) {
/* set SPDIF (if present) */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
value &= ~ATI_REG_CMD_SPDF_CONFIG_MASK;
value |= ATI_REG_CMD_SPDF_CONFIG_34; /* NetBSD AC'97 default */
/* XXX this prolly is not necessary unless split XXX */
value &= ~ATI_REG_CMD_INTERLEAVE_SPDF;
if (params->precision <= 16)
value |= ATI_REG_CMD_INTERLEAVE_SPDF;
bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
}
return 0;
}
/* set audio properties in desired setting */
static int
auixp_set_format(void *hdl, int setmode,
const audio_params_t *play, const audio_params_t *rec,
audio_filter_reg_t *pfil, audio_filter_reg_t *rfil)
{
struct auixp_codec *co;
struct auixp_softc *sc;
const audio_params_t *params;
int mode, index;
/*
* In current NetBSD AC'97 implementation, SPDF is linked to channel 3
* and 4 i.e. stereo output.
*/
co = (struct auixp_codec *) hdl;
sc = co->sc;
for (mode = AUMODE_RECORD; mode != -1;
mode = (mode == AUMODE_RECORD) ? AUMODE_PLAY : -1) {
if ((setmode & mode) == 0)
continue;
params = (mode == AUMODE_PLAY) ? play : rec;
if (params == NULL)
continue;
index = audio_indexof_format(sc->sc_formats, AUIXP_NFORMATS,
mode, params);
/* if variable speed and we can't set the desired rate, fail */
if ((sc->sc_formats[index].frequency_type != 1) &&
auixp_set_rate(co, mode, params->sample_rate))
return EINVAL;
/* preserve the settings */
if (mode == AUMODE_PLAY)
sc->sc_play_params = *params;
if (mode == AUMODE_RECORD)
sc->sc_rec_params = *params;
}
return 0;
}
/* called to translate a requested blocksize to a hw-possible one */
static int
auixp_round_blocksize(void *hdl, int bs, int mode,
const audio_params_t *param)
{
/* 256 kb possible */
if (bs > 0x10000)
bs = 0x10000; /* 64 kb max */
bs = rounddown(bs, param->channels * param->precision / NBBY);
return bs;
}
/*
* allocate dma capable memory and record its information for later retrieval
* when we program the dma chain itself. The trigger routines passes on the
* kernel virtual address we return here as a reference to the mapping.
*/
static void *
auixp_malloc(void *hdl, int direction, size_t size)
{
struct auixp_codec *co;
struct auixp_softc *sc;
struct auixp_dma *dma;
int error;
co = (struct auixp_codec *) hdl;
sc = co->sc;
/* get us a auixp_dma structure */
dma = kmem_alloc(sizeof(*dma), KM_SLEEP);
/* get us a dma buffer itself */
error = auixp_allocmem(sc, size, 16, dma);
if (error) {
kmem_free(dma, sizeof(*dma));
aprint_error_dev(sc->sc_dev, "auixp_malloc: not enough memory\n");
return NULL;
}
SLIST_INSERT_HEAD(&sc->sc_dma_list, dma, dma_chain);
DPRINTF(("auixp_malloc: returning kern %p, hw 0x%08x for %zd bytes "
"in %d segs\n", KERNADDR(dma), (uint32_t) DMAADDR(dma), dma->size,
dma->nsegs)
);
return KERNADDR(dma);
}
/*
* free and release dma capable memory we allocated before and remove its
* recording
*/
static void
auixp_free(void *hdl, void *addr, size_t size)
{
struct auixp_codec *co;
struct auixp_softc *sc;
struct auixp_dma *dma;
co = (struct auixp_codec *) hdl;
sc = co->sc;
SLIST_FOREACH(dma, &sc->sc_dma_list, dma_chain) {
if (KERNADDR(dma) == addr) {
SLIST_REMOVE(&sc->sc_dma_list, dma, auixp_dma,
dma_chain);
auixp_freemem(sc, dma);
kmem_free(dma, sizeof(*dma));
return;
}
}
}
static int
auixp_getdev(void *hdl, struct audio_device *ret)
{
*ret = auixp_device;
return 0;
}
/* pass request to AC'97 codec code */
static int
auixp_set_port(void *hdl, mixer_ctrl_t *mc)
{
struct auixp_codec *co;
co = (struct auixp_codec *) hdl;
return co->codec_if->vtbl->mixer_set_port(co->codec_if, mc);
}
/* pass request to AC'97 codec code */
static int
auixp_get_port(void *hdl, mixer_ctrl_t *mc)
{
struct auixp_codec *co;
co = (struct auixp_codec *) hdl;
return co->codec_if->vtbl->mixer_get_port(co->codec_if, mc);
}
/* pass request to AC'97 codec code */
static int
auixp_query_devinfo(void *hdl, mixer_devinfo_t *di)
{
struct auixp_codec *co;
co = (struct auixp_codec *) hdl;
return co->codec_if->vtbl->query_devinfo(co->codec_if, di);
}
static size_t
auixp_round_buffersize(void *hdl, int direction,
size_t bufsize)
{
/* XXX force maximum? i.e. 256 kb? */
return bufsize;
}
static int
auixp_get_props(void *hdl)
{
return AUDIO_PROP_PLAYBACK | AUDIO_PROP_CAPTURE |
AUDIO_PROP_INDEPENDENT | AUDIO_PROP_FULLDUPLEX;
}
/*
* A dma descriptor has dma->nsegs segments defined in dma->segs set up when
* we claimed the memory.
*
* Due to our demand for one contiguous DMA area, we only have one segment. A
* c_dma structure is about 3 kb for the 256 entries we maximally program
* -arbitrary limit AFAIK- so all is most likely to be in one segment/page
* anyway.
*
* XXX ought to implement fragmented dma area XXX
*
* Note that _v variables depict kernel virtual addresses, _p variables depict
* physical addresses.
*/
static void
auixp_link_daisychain(struct auixp_softc *sc,
struct auixp_dma *c_dma, struct auixp_dma *s_dma,
int blksize, int blocks)
{
atiixp_dma_desc_t *caddr_v, *next_caddr_v;
uint32_t caddr_p, next_caddr_p, saddr_p;
int i;
/* just make sure we are not changing when its running */
auixp_disable_dma(sc, c_dma);
/* setup dma chain start addresses */
caddr_v = KERNADDR(c_dma);
caddr_p = DMAADDR(c_dma);
saddr_p = DMAADDR(s_dma);
/* program the requested number of blocks */
for (i = 0; i < blocks; i++) {
/* clear the block just in case */
memset(caddr_v, 0, sizeof(atiixp_dma_desc_t));
/* round robin the chain dma addresses for its successor */
next_caddr_v = caddr_v + 1;
next_caddr_p = caddr_p + sizeof(atiixp_dma_desc_t);
if (i == blocks-1) {
next_caddr_v = KERNADDR(c_dma);
next_caddr_p = DMAADDR(c_dma);
}
/* fill in the hardware dma chain descriptor in little-endian */
caddr_v->addr = htole32(saddr_p);
caddr_v->status = htole16(0);
caddr_v->size = htole16((blksize >> 2)); /* in dwords (!!!) */
caddr_v->next = htole32(next_caddr_p);
/* advance slot */
saddr_p += blksize; /* XXX assuming contiguous XXX */
caddr_v = next_caddr_v;
caddr_p = next_caddr_p;
}
}
static int
auixp_allocate_dma_chain(struct auixp_softc *sc, struct auixp_dma **dmap)
{
struct auixp_dma *dma;
int error;
/* allocate keeper of dma area */
*dmap = NULL;
dma = kmem_zalloc(sizeof(struct auixp_dma), KM_SLEEP);
/* allocate for daisychain of IXP hardware-dma descriptors */
error = auixp_allocmem(sc, DMA_DESC_CHAIN * sizeof(atiixp_dma_desc_t),
16, dma);
if (error) {
aprint_error_dev(sc->sc_dev, "can't malloc dma descriptor chain\n");
kmem_free(dma, sizeof(*dma));
return ENOMEM;
}
/* return info and initialise structure */
dma->intr = NULL;
dma->intrarg = NULL;
*dmap = dma;
return 0;
}
/* program dma chain in its link address descriptor */
static void
auixp_program_dma_chain(struct auixp_softc *sc, struct auixp_dma *dma)
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
uint32_t value;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
/* get hardware start address of DMA chain and set valid-flag in it */
/* XXX always at start? XXX */
value = DMAADDR(dma);
value = value | ATI_REG_LINKPTR_EN;
/* reset linkpointer */
bus_space_write_4(iot, ioh, dma->linkptr, 0);
/* reset this DMA engine */
auixp_disable_dma(sc, dma);
auixp_enable_dma(sc, dma);
/* program new DMA linkpointer */
bus_space_write_4(iot, ioh, dma->linkptr, value);
}
/* called from interrupt code to signal end of one dma-slot */
static void
auixp_dma_update(struct auixp_softc *sc, struct auixp_dma *dma)
{
/* be very paranoid */
if (!dma)
panic("%s: update: dma = NULL", device_xname(sc->sc_dev));
if (!dma->intr)
panic("%s: update: dma->intr = NULL", device_xname(sc->sc_dev));
/* request more input from upper layer */
(*dma->intr)(dma->intrarg);
}
/*
* The magic `busbusy' bit that needs to be set when dma is active; allowing
* busmastering?
*/
static void
auixp_update_busbusy(struct auixp_softc *sc)
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
uint32_t value;
int running;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
/* set bus-busy flag when either recording or playing is performed */
value = bus_space_read_4(iot, ioh, ATI_REG_IER);
value &= ~ATI_REG_IER_SET_BUS_BUSY;
running = ((sc->sc_output_dma->running) || (sc->sc_input_dma->running));
if (running)
value |= ATI_REG_IER_SET_BUS_BUSY;
bus_space_write_4(iot, ioh, ATI_REG_IER, value);
}
/*
* Called from upper audio layer to request playing audio, only called once;
* audio is refilled by calling the intr() function when space is available
* again.
*/
/* XXX almost literally a copy of trigger-input; could be factorised XXX */
static int
auixp_trigger_output(void *hdl, void *start, void *end, int blksize,
void (*intr)(void *), void *intrarg, const audio_params_t *param)
{
struct auixp_codec *co;
struct auixp_softc *sc;
struct auixp_dma *chain_dma;
struct auixp_dma *sound_dma;
uint32_t blocks;
co = (struct auixp_codec *) hdl;
sc = co->sc;
chain_dma = sc->sc_output_dma;
/* add functions to call back */
chain_dma->intr = intr;
chain_dma->intrarg = intrarg;
/*
* Program output DMA chain with blocks from [start...end] with
* blksize fragments.
*
* NOTE, we can assume its in one block since we asked for it to be in
* one contiguous blob; XXX change this? XXX
*/
blocks = (size_t) (((char *) end) - ((char *) start)) / blksize;
/* lookup `start' address in our list of DMA area's */
SLIST_FOREACH(sound_dma, &sc->sc_dma_list, dma_chain) {
if (KERNADDR(sound_dma) == start)
break;
}
/* not ours ? then bail out */
if (!sound_dma) {
printf("%s: auixp_trigger_output: bad sound addr %p\n",
device_xname(sc->sc_dev), start);
return EINVAL;
}
/* link round-robin daisychain and program hardware */
auixp_link_daisychain(sc, chain_dma, sound_dma, blksize, blocks);
auixp_program_dma_chain(sc, chain_dma);
/* mark we are now able to run now */
chain_dma->running = 1;
/* update bus-flags; XXX programs more flags XXX */
auixp_update_busbusy(sc);
/* callbacks happen in interrupt routine */
return 0;
}
/* halt output of audio, just disable its dma and update bus state */
static int
auixp_halt_output(void *hdl)
{
struct auixp_codec *co;
struct auixp_softc *sc;
struct auixp_dma *dma;
co = (struct auixp_codec *) hdl;
sc = co->sc;
dma = sc->sc_output_dma;
auixp_disable_dma(sc, dma);
dma->running = 0;
auixp_update_busbusy(sc);
return 0;
}
/* XXX almost literally a copy of trigger-output; could be factorised XXX */
static int
auixp_trigger_input(void *hdl, void *start, void *end, int blksize,
void (*intr)(void *), void *intrarg, const audio_params_t *param)
{
struct auixp_codec *co;
struct auixp_softc *sc;
struct auixp_dma *chain_dma;
struct auixp_dma *sound_dma;
uint32_t blocks;
co = (struct auixp_codec *) hdl;
sc = co->sc;
chain_dma = sc->sc_input_dma;
/* add functions to call back */
chain_dma->intr = intr;
chain_dma->intrarg = intrarg;
/*
* Program output DMA chain with blocks from [start...end] with
* blksize fragments.
*
* NOTE, we can assume its in one block since we asked for it to be in
* one contiguous blob; XXX change this? XXX
*/
blocks = (size_t) (((char *) end) - ((char *) start)) / blksize;
/* lookup `start' address in our list of DMA area's */
SLIST_FOREACH(sound_dma, &sc->sc_dma_list, dma_chain) {
if (KERNADDR(sound_dma) == start)
break;
}
/* not ours ? then bail out */
if (!sound_dma) {
printf("%s: auixp_trigger_input: bad sound addr %p\n",
device_xname(sc->sc_dev), start);
return EINVAL;
}
/* link round-robin daisychain and program hardware */
auixp_link_daisychain(sc, chain_dma, sound_dma, blksize, blocks);
auixp_program_dma_chain(sc, chain_dma);
/* mark we are now able to run now */
chain_dma->running = 1;
/* update bus-flags; XXX programs more flags XXX */
auixp_update_busbusy(sc);
/* callbacks happen in interrupt routine */
return 0;
}
/* halt sampling audio, just disable its dma and update bus state */
static int
auixp_halt_input(void *hdl)
{
struct auixp_codec *co;
struct auixp_softc *sc;
struct auixp_dma *dma;
co = (struct auixp_codec *) hdl;
sc = co->sc;
dma = sc->sc_input_dma;
auixp_disable_dma(sc, dma);
dma->running = 0;
auixp_update_busbusy(sc);
return 0;
}
/*
* IXP audio interrupt handler
*
* note that we return the number of bits handled; the return value is not
* documented but I saw it implemented in other drivers. Prolly returning a
* value > 0 means "I've dealt with it"
*
*/
static int
auixp_intr(void *softc)
{
struct auixp_softc *sc;
bus_space_tag_t iot;
bus_space_handle_t ioh;
uint32_t status, enable, detected_codecs;
int ret;
sc = softc;
mutex_spin_enter(&sc->sc_intr_lock);
iot = sc->sc_iot;
ioh = sc->sc_ioh;
ret = 0;
/* get status from the interrupt status register */
status = bus_space_read_4(iot, ioh, ATI_REG_ISR);
if (status == 0) {
mutex_spin_exit(&sc->sc_intr_lock);
return 0;
}
DPRINTF(("%s: (status = %x)\n", device_xname(sc->sc_dev), status));
/* check DMA UPDATE flags for input & output */
if (status & ATI_REG_ISR_IN_STATUS) {
ret++; DPRINTF(("IN_STATUS\n"));
auixp_dma_update(sc, sc->sc_input_dma);
}
if (status & ATI_REG_ISR_OUT_STATUS) {
ret++; DPRINTF(("OUT_STATUS\n"));
auixp_dma_update(sc, sc->sc_output_dma);
}
/* XXX XRUN flags not used/needed yet; should i implement it? XXX */
/* acknowledge the interrupts nevertheless */
if (status & ATI_REG_ISR_IN_XRUN) {
ret++; DPRINTF(("IN_XRUN\n"));
/* auixp_dma_xrun(sc, sc->sc_input_dma); */
}
if (status & ATI_REG_ISR_OUT_XRUN) {
ret++; DPRINTF(("OUT_XRUN\n"));
/* auixp_dma_xrun(sc, sc->sc_output_dma); */
}
/* check if we are looking for codec detection */
if (status & CODEC_CHECK_BITS) {
ret++;
/* mark missing codecs as not ready */
detected_codecs = status & CODEC_CHECK_BITS;
sc->sc_codec_not_ready_bits |= detected_codecs;
/* disable detected interrupt sources */
enable = bus_space_read_4(iot, ioh, ATI_REG_IER);
enable &= ~detected_codecs;
bus_space_write_4(iot, ioh, ATI_REG_IER, enable);
}
/* acknowledge interrupt sources */
bus_space_write_4(iot, ioh, ATI_REG_ISR, status);
mutex_spin_exit(&sc->sc_intr_lock);
return ret;
}
/* allocate memory for dma purposes; on failure of any of the steps, roll back */
static int
auixp_allocmem(struct auixp_softc *sc, size_t size,
size_t align, struct auixp_dma *dma)
{
int error;
/* remember size */
dma->size = size;
/* allocate DMA safe memory but in just one segment for now :( */
error = bus_dmamem_alloc(sc->sc_dmat, dma->size, align, 0,
dma->segs, sizeof(dma->segs) / sizeof(dma->segs[0]), &dma->nsegs,
BUS_DMA_WAITOK);
if (error)
return error;
/*
* map allocated memory into kernel virtual address space and keep it
* coherent with the CPU.
*/
error = bus_dmamem_map(sc->sc_dmat, dma->segs, dma->nsegs, dma->size,
&dma->addr, BUS_DMA_WAITOK | BUS_DMA_COHERENT);
if (error)
goto free;
/* allocate associated dma handle and initialize it. */
error = bus_dmamap_create(sc->sc_dmat, dma->size, 1, dma->size, 0,
BUS_DMA_WAITOK, &dma->map);
if (error)
goto unmap;
/*
* load the dma handle with mappings for a dma transfer; all pages
* need to be wired.
*/
error = bus_dmamap_load(sc->sc_dmat, dma->map, dma->addr, dma->size, NULL,
BUS_DMA_WAITOK);
if (error)
goto destroy;
return 0;
destroy:
bus_dmamap_destroy(sc->sc_dmat, dma->map);
unmap:
bus_dmamem_unmap(sc->sc_dmat, dma->addr, dma->size);
free:
bus_dmamem_free(sc->sc_dmat, dma->segs, dma->nsegs);
return error;
}
/* undo dma mapping and release memory allocated */
static int
auixp_freemem(struct auixp_softc *sc, struct auixp_dma *p)
{
bus_dmamap_unload(sc->sc_dmat, p->map);
bus_dmamap_destroy(sc->sc_dmat, p->map);
bus_dmamem_unmap(sc->sc_dmat, p->addr, p->size);
bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
return 0;
}
/*
* Attachment section
*/
/* Is it my hardware? */
static int
auixp_match(device_t dev, cfdata_t match, void *aux)
{
struct pci_attach_args *pa;
pa = (struct pci_attach_args *)aux;
switch(PCI_VENDOR(pa->pa_id)) {
case PCI_VENDOR_ATI:
switch(PCI_PRODUCT(pa->pa_id)) {
case PCI_PRODUCT_ATI_IXP_AUDIO_200:
case PCI_PRODUCT_ATI_IXP_AUDIO_300:
case PCI_PRODUCT_ATI_IXP_AUDIO_400:
return 1;
}
}
return 0;
}
/* it is... now hook up and set up the resources we need */
static void
auixp_attach(device_t parent, device_t self, void *aux)
{
struct auixp_softc *sc;
struct pci_attach_args *pa;
pcitag_t tag;
pci_chipset_tag_t pc;
pci_intr_handle_t ih;
const struct auixp_card_type *card;
const char *intrstr;
uint32_t data;
int error;
char intrbuf[PCI_INTRSTR_LEN];
sc = device_private(self);
sc->sc_dev = self;
pa = (struct pci_attach_args *)aux;
tag = pa->pa_tag;
pc = pa->pa_pc;
#ifdef DEBUG_AUIXP
static_sc = sc;
#endif
/* print information confirming attachment */
pci_aprint_devinfo(pa, "Audio controller");
/* set up details from our set of known `cards'/chips */
for (card = auixp_card_types; card->pci_vendor_id; card++)
if (PCI_VENDOR(pa->pa_id) == card->pci_vendor_id &&
PCI_PRODUCT(pa->pa_id) == card->pci_product_id) {
sc->type = card->type;
break;
}
/* device only has 32 bit non prefetchable memory */
/* set MEM space access and enable the card's busmastering */
data = pci_conf_read(pc, tag, PCI_COMMAND_STATUS_REG);
data |= (PCI_COMMAND_MEM_ENABLE | PCI_COMMAND_MASTER_ENABLE);
pci_conf_write(pc, tag, PCI_COMMAND_STATUS_REG, data);
/* map memory; its not sized -> what is the size? max PCI slot size? */
if (pci_mapreg_map(pa, PCI_CBIO, PCI_MAPREG_TYPE_MEM, 0,
&sc->sc_iot, &sc->sc_ioh, &sc->sc_iob, &sc->sc_ios)) {
aprint_error_dev(sc->sc_dev, "can't map memory space\n");
return;
}
/* Initialize softc */
sc->sc_tag = tag;
sc->sc_pct = pc;
sc->sc_dmat = pa->pa_dmat;
SLIST_INIT(&sc->sc_dma_list);
/* get us the auixp_dma structures */
auixp_allocate_dma_chain(sc, &sc->sc_output_dma);
auixp_allocate_dma_chain(sc, &sc->sc_input_dma);
/* when that fails we are dead in the water */
if (!sc->sc_output_dma || !sc->sc_input_dma)
return;
#if 0
/* could preliminary program DMA chain */
auixp_program_dma_chain(sc, sc->sc_output_dma);
auixp_program_dma_chain(sc, sc->sc_input_dma);
#endif
/* map interrupt on the pci bus */
if (pci_intr_map(pa, &ih)) {
aprint_error_dev(sc->sc_dev, "can't map interrupt\n");
return;
}
/* where are we connected at ? */
intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf));
mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
mutex_init(&sc->sc_intr_lock, MUTEX_DEFAULT, IPL_AUDIO);
/* establish interrupt routine hookup at IPL_AUDIO level */
sc->sc_ih = pci_intr_establish_xname(pc, ih, IPL_AUDIO, auixp_intr,
sc, device_xname(self));
if (sc->sc_ih == NULL) {
aprint_error_dev(sc->sc_dev, "can't establish interrupt");
if (intrstr != NULL)
aprint_error(" at %s", intrstr);
aprint_error("\n");
return;
}
aprint_normal_dev(sc->sc_dev, "interrupting at %s\n", intrstr);
/* power up chip */
if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self,
pci_activate_null)) && error != EOPNOTSUPP) {
aprint_error_dev(sc->sc_dev, "cannot activate %d\n",
error);
return;
}
/* init chip */
if (auixp_init(sc) == -1) {
aprint_error_dev(sc->sc_dev,
"auixp_attach: unable to initialize the card\n");
return;
}
if (!pmf_device_register(self, NULL, auixp_resume))
aprint_error_dev(self, "couldn't establish power handler\n");
/*
* delay further configuration of codecs and audio after interrupts
* are enabled.
*/
config_interrupts(self, auixp_post_config);
}
/* called from autoconfigure system when interrupts are enabled */
static void
auixp_post_config(device_t self)
{
struct auixp_softc *sc;
struct auixp_codec *codec;
int codec_nr;
int i;
sc = device_private(self);
/* detect the AC97 codecs */
auixp_autodetect_codecs(sc);
/* setup audio translation formats : following codec0 (!) */
codec = &sc->sc_codec[0];
if (!codec->present) {
/* nothing??? then invalidate all formats */
for (i = 0; i < AUIXP_NFORMATS; i++) {
AUFMT_INVALIDATE(&sc->sc_formats[i]);
}
return;
}
/* copy formats and invalidate entries not suitable for codec0 */
memcpy(sc->sc_formats, auixp_formats, sizeof(auixp_formats));
mutex_enter(&sc->sc_lock);
sc->has_4ch = AC97_IS_4CH(codec->codec_if);
sc->has_6ch = AC97_IS_6CH(codec->codec_if);
sc->is_fixed = AC97_IS_FIXED_RATE(codec->codec_if);
sc->has_spdif = AC97_HAS_SPDIF(codec->codec_if);
mutex_exit(&sc->sc_lock);
for (i = 0; i < AUIXP_NFORMATS; i++) {
if (sc->is_fixed) {
sc->sc_formats[i].frequency_type = 1;
sc->sc_formats[i].frequency[0] = 48000;
}
switch (sc->sc_formats[i].channels) {
case 4 :
if (sc->has_4ch)
break;
AUFMT_INVALIDATE(&sc->sc_formats[i]);
break;
case 6 :
if (sc->has_6ch)
break;
AUFMT_INVALIDATE(&sc->sc_formats[i]);
break;
default :
break;
}
}
if (sc->has_spdif) {
aprint_normal_dev(sc->sc_dev, "codec spdif support detected but disabled "
"for now\n");
sc->has_spdif = 0;
}
/* fill in the missing details about the dma channels. */
/* for output */
sc->sc_output_dma->linkptr = ATI_REG_OUT_DMA_LINKPTR;
sc->sc_output_dma->dma_enable_bit = ATI_REG_CMD_OUT_DMA_EN |
ATI_REG_CMD_SEND_EN;
/* have spdif? then this too! XXX not seeing LED yet! XXX */
if (sc->has_spdif)
sc->sc_output_dma->dma_enable_bit |= ATI_REG_CMD_SPDF_OUT_EN;
/* and for input */
sc->sc_input_dma->linkptr = ATI_REG_IN_DMA_LINKPTR;
sc->sc_input_dma->dma_enable_bit = ATI_REG_CMD_IN_DMA_EN |
ATI_REG_CMD_RECEIVE_EN;
/* attach audio devices for all detected codecs */
/* XXX wise? look at other multiple-codec able chipsets XXX */
for (codec_nr = 0; codec_nr < ATI_IXP_CODECS; codec_nr++) {
codec = &sc->sc_codec[codec_nr];
if (codec->present)
audio_attach_mi(&auixp_hw_if, codec, sc->sc_dev);
}
/* done! now enable all interrupts we can service */
auixp_enable_interrupts(sc);
}
static void
auixp_enable_interrupts(struct auixp_softc *sc)
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
uint32_t value;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
mutex_spin_enter(&sc->sc_intr_lock);
/* clear all pending */
bus_space_write_4(iot, ioh, ATI_REG_ISR, 0xffffffff);
/* enable all relevant interrupt sources we can handle */
value = bus_space_read_4(iot, ioh, ATI_REG_IER);
value |= ATI_REG_IER_IO_STATUS_EN;
#ifdef notyet
value |= ATI_REG_IER_IN_XRUN_EN;
value |= ATI_REG_IER_OUT_XRUN_EN;
value |= ATI_REG_IER_SPDIF_XRUN_EN;
value |= ATI_REG_IER_SPDF_STATUS_EN;
#endif
bus_space_write_4(iot, ioh, ATI_REG_IER, value);
mutex_spin_exit(&sc->sc_intr_lock);
}
static void
auixp_disable_interrupts(struct auixp_softc *sc)
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
mutex_spin_enter(&sc->sc_intr_lock);
/* disable all interrupt sources */
bus_space_write_4(iot, ioh, ATI_REG_IER, 0);
/* clear all pending */
bus_space_write_4(iot, ioh, ATI_REG_ISR, 0xffffffff);
mutex_spin_exit(&sc->sc_intr_lock);
}
/* dismantle what we've set up by undoing setup */
static int
auixp_detach(device_t self, int flags)
{
struct auixp_softc *sc;
sc = device_private(self);
/* XXX shouldn't we just reset the chip? XXX */
/*
* should we explicitly disable interrupt generation and acknowledge
* what's left on? better be safe than sorry.
*/
auixp_disable_interrupts(sc);
/* tear down .... */
config_detach(sc->sc_dev, flags); /* XXX OK? XXX */
pmf_device_deregister(self);
if (sc->sc_ih != NULL)
pci_intr_disestablish(sc->sc_pct, sc->sc_ih);
if (sc->sc_ios)
bus_space_unmap(sc->sc_iot, sc->sc_ioh, sc->sc_ios);
mutex_destroy(&sc->sc_lock);
mutex_destroy(&sc->sc_intr_lock);
return 0;
}
/*
* codec handling
*
* IXP audio support can have upto 3 codecs! are they chained ? or
* alternative outlets with the same audio feed i.e. with different mixer
* settings? XXX does NetBSD support more than one audio codec? XXX
*/
static int
auixp_attach_codec(void *aux, struct ac97_codec_if *codec_if)
{
struct auixp_codec *ixp_codec;
ixp_codec = aux;
ixp_codec->codec_if = codec_if;
ixp_codec->present = 1;
return 0;
}
static int
auixp_read_codec(void *aux, uint8_t reg, uint16_t *result)
{
struct auixp_codec *co;
struct auixp_softc *sc;
bus_space_tag_t iot;
bus_space_handle_t ioh;
uint32_t data;
int timeout;
co = aux;
sc = co->sc;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
if (auixp_wait_for_codecs(sc, "read_codec"))
return 0xffff;
/* build up command for reading codec register */
data = (reg << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
ATI_REG_PHYS_OUT_ADDR_EN |
ATI_REG_PHYS_OUT_RW |
co->codec_nr;
bus_space_write_4(iot, ioh, ATI_REG_PHYS_OUT_ADDR, data);
if (auixp_wait_for_codecs(sc, "read_codec"))
return 0xffff;
/* wait until codec info is clocked in */
timeout = 500; /* 500*2 usec -> 0.001 sec */
do {
data = bus_space_read_4(iot, ioh, ATI_REG_PHYS_IN_ADDR);
if (data & ATI_REG_PHYS_IN_READ_FLAG) {
DPRINTF(("read ac'97 codec reg 0x%x = 0x%08x\n",
reg, data >> ATI_REG_PHYS_IN_DATA_SHIFT)
);
*result = data >> ATI_REG_PHYS_IN_DATA_SHIFT;
return 0;
}
DELAY(2);
timeout--;
} while (timeout > 0);
if (reg < 0x7c)
printf("%s: codec read timeout! (reg %x)\n",
device_xname(sc->sc_dev), reg);
return 0xffff;
}
static int
auixp_write_codec(void *aux, uint8_t reg, uint16_t data)
{
struct auixp_codec *co;
struct auixp_softc *sc;
bus_space_tag_t iot;
bus_space_handle_t ioh;
uint32_t value;
DPRINTF(("write ac'97 codec reg 0x%x = 0x%08x\n", reg, data));
co = aux;
sc = co->sc;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
if (auixp_wait_for_codecs(sc, "write_codec"))
return -1;
/* build up command for writing codec register */
value = (((uint32_t) data) << ATI_REG_PHYS_OUT_DATA_SHIFT) |
(((uint32_t) reg) << ATI_REG_PHYS_OUT_ADDR_SHIFT) |
ATI_REG_PHYS_OUT_ADDR_EN |
co->codec_nr;
bus_space_write_4(iot, ioh, ATI_REG_PHYS_OUT_ADDR, value);
return 0;
}
static int
auixp_reset_codec(void *aux)
{
/* nothing to be done? */
return 0;
}
static enum ac97_host_flags
auixp_flags_codec(void *aux)
{
struct auixp_codec *ixp_codec;
ixp_codec = aux;
return ixp_codec->codec_flags;
}
static int
auixp_wait_for_codecs(struct auixp_softc *sc, const char *func)
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
uint32_t value;
int timeout;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
/* wait until all codec transfers are done */
timeout = 500; /* 500*2 usec -> 0.001 sec */
do {
value = bus_space_read_4(iot, ioh, ATI_REG_PHYS_OUT_ADDR);
if ((value & ATI_REG_PHYS_OUT_ADDR_EN) == 0)
return 0;
DELAY(2);
timeout--;
} while (timeout > 0);
printf("%s: %s: timed out\n", func, device_xname(sc->sc_dev));
return -1;
}
static void
auixp_autodetect_codecs(struct auixp_softc *sc)
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
struct auixp_codec *codec;
int timeout, codec_nr;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
/* ATI IXP can have upto 3 codecs; mark all codecs as not existing */
sc->sc_codec_not_ready_bits = 0;
sc->sc_num_codecs = 0;
/* enable all codecs to interrupt as well as the new frame interrupt */
bus_space_write_4(iot, ioh, ATI_REG_IER, CODEC_CHECK_BITS);
/* wait for the interrupts to happen */
timeout = 100; /* 100.000 usec -> 0.1 sec */
while (timeout > 0) {
DELAY(1000);
if (sc->sc_codec_not_ready_bits)
break;
timeout--;
}
if (timeout == 0)
printf("%s: WARNING: timeout during codec detection; "
"codecs might be present but haven't interrupted\n",
device_xname(sc->sc_dev));
/* disable all interrupts for now */
auixp_disable_interrupts(sc);
/* Attach AC97 host interfaces */
for (codec_nr = 0; codec_nr < ATI_IXP_CODECS; codec_nr++) {
codec = &sc->sc_codec[codec_nr];
memset(codec, 0, sizeof(struct auixp_codec));
codec->sc = sc;
codec->codec_nr = codec_nr;
codec->present = 0;
codec->host_if.arg = codec;
codec->host_if.attach = auixp_attach_codec;
codec->host_if.read = auixp_read_codec;
codec->host_if.write = auixp_write_codec;
codec->host_if.reset = auixp_reset_codec;
codec->host_if.flags = auixp_flags_codec;
}
if (!(sc->sc_codec_not_ready_bits & ATI_REG_ISR_CODEC0_NOT_READY)) {
/* codec 0 present */
DPRINTF(("auixp : YAY! codec 0 present!\n"));
if (ac97_attach(&sc->sc_codec[0].host_if, sc->sc_dev,
&sc->sc_lock) == 0)
sc->sc_num_codecs++;
}
if (!(sc->sc_codec_not_ready_bits & ATI_REG_ISR_CODEC1_NOT_READY)) {
/* codec 1 present */
DPRINTF(("auixp : YAY! codec 1 present!\n"));
if (ac97_attach(&sc->sc_codec[1].host_if, sc->sc_dev,
&sc->sc_lock) == 0)
sc->sc_num_codecs++;
}
if (!(sc->sc_codec_not_ready_bits & ATI_REG_ISR_CODEC2_NOT_READY)) {
/* codec 2 present */
DPRINTF(("auixp : YAY! codec 2 present!\n"));
if (ac97_attach(&sc->sc_codec[2].host_if, sc->sc_dev,
&sc->sc_lock) == 0)
sc->sc_num_codecs++;
}
if (sc->sc_num_codecs == 0) {
printf("%s: no codecs detected or "
"no codecs managed to initialise\n",
device_xname(sc->sc_dev));
return;
}
}
/* initialisation routines */
static void
auixp_disable_dma(struct auixp_softc *sc, struct auixp_dma *dma)
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
uint32_t value;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
/* lets not stress the DMA engine more than necessary */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
if (value & dma->dma_enable_bit) {
value &= ~dma->dma_enable_bit;
bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
}
}
static void
auixp_enable_dma(struct auixp_softc *sc, struct auixp_dma *dma)
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
uint32_t value;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
/* lets not stress the DMA engine more than necessary */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
if (!(value & dma->dma_enable_bit)) {
value |= dma->dma_enable_bit;
bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
}
}
static void
auixp_reset_aclink(struct auixp_softc *sc)
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
uint32_t value, timeout;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
/* if power is down, power it up */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
if (value & ATI_REG_CMD_POWERDOWN) {
printf("%s: powering up\n", device_xname(sc->sc_dev));
/* explicitly enable power */
value &= ~ATI_REG_CMD_POWERDOWN;
bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
/* have to wait at least 10 usec for it to initialise */
DELAY(20);
};
printf("%s: soft resetting aclink\n", device_xname(sc->sc_dev));
/* perform a soft reset */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
value |= ATI_REG_CMD_AC_SOFT_RESET;
bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
/* need to read the CMD reg and wait approx. 10 usec to init */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
DELAY(20);
/* clear soft reset flag again */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
value &= ~ATI_REG_CMD_AC_SOFT_RESET;
bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
/* check if the ac-link is working; reset device otherwise */
timeout = 10;
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
while (!(value & ATI_REG_CMD_ACLINK_ACTIVE)) {
printf("%s: not up; resetting aclink hardware\n",
device_xname(sc->sc_dev));
/* dip aclink reset but keep the acsync */
value &= ~ATI_REG_CMD_AC_RESET;
value |= ATI_REG_CMD_AC_SYNC;
bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
/* need to read CMD again and wait again (clocking in issue?) */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
DELAY(20);
/* assert aclink reset again */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
value |= ATI_REG_CMD_AC_RESET;
bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
/* check if its active now */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
timeout--;
if (timeout == 0) break;
};
if (timeout == 0) {
printf("%s: giving up aclink reset\n", device_xname(sc->sc_dev));
};
if (timeout != 10) {
printf("%s: aclink hardware reset successful\n",
device_xname(sc->sc_dev));
};
/* assert reset and sync for safety */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
value |= ATI_REG_CMD_AC_SYNC | ATI_REG_CMD_AC_RESET;
bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
}
/* chip hard init */
static int
auixp_init(struct auixp_softc *sc)
{
bus_space_tag_t iot;
bus_space_handle_t ioh;
uint32_t value;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
/* disable all interrupts and clear all sources */
auixp_disable_interrupts(sc);
/* clear all DMA enables (preserving rest of settings) */
value = bus_space_read_4(iot, ioh, ATI_REG_CMD);
value &= ~( ATI_REG_CMD_IN_DMA_EN |
ATI_REG_CMD_OUT_DMA_EN |
ATI_REG_CMD_SPDF_OUT_EN );
bus_space_write_4(iot, ioh, ATI_REG_CMD, value);
/* Reset AC-link */
auixp_reset_aclink(sc);
/*
* codecs get auto-detected later
*
* note: we are NOT enabling interrupts yet, no codecs have been
* detected yet nor is anything else set up
*/
return 0;
}
static bool
auixp_resume(device_t dv, const pmf_qual_t *qual)
{
struct auixp_softc *sc = device_private(dv);
mutex_enter(&sc->sc_lock);
auixp_reset_codec(sc);
delay(1000);
(sc->sc_codec[0].codec_if->vtbl->restore_ports)(sc->sc_codec[0].codec_if);
mutex_exit(&sc->sc_lock);
return true;
}
#ifdef DEBUG_AUIXP
static void
auixp_dumpreg(void)
{
struct auixp_softc *sc;
bus_space_tag_t iot;
bus_space_handle_t ioh;
int i;
sc = static_sc;
iot = sc->sc_iot;
ioh = sc->sc_ioh;
printf("%s register dump:\n", device_xname(sc->sc_dev));
for (i = 0; i < 256; i+=4) {
printf("\t0x%02x: 0x%08x\n", i, bus_space_read_4(iot, ioh, i));
}
printf("\n");
}
#endif
static void
auixp_get_locks(void *addr, kmutex_t **intr, kmutex_t **proc)
{
struct auixp_codec *co = addr;
struct auixp_softc *sc = co->sc;
*intr = &sc->sc_intr_lock;
*proc = &sc->sc_lock;
}
