static void
ich_filldtbl(struct sc_chinfo *ch)
{
struct sc_info *sc = ch->parent;
uint32_t base;
int i;
base = sndbuf_getbufaddr(ch->buffer);
if ((ch->blksz * ch->blkcnt) > sndbuf_getmaxsize(ch->buffer))
ch->blksz = sndbuf_getmaxsize(ch->buffer) / ch->blkcnt;
if ((sndbuf_getblksz(ch->buffer) != ch->blksz ||
sndbuf_getblkcnt(ch->buffer) != ch->blkcnt) &&
sndbuf_resize(ch->buffer, ch->blkcnt, ch->blksz) != 0)
device_printf(sc->dev, "%s: failed blksz=%u blkcnt=%u\n",
__func__, ch->blksz, ch->blkcnt);
ch->blksz = sndbuf_getblksz(ch->buffer);
for (i = 0; i < ICH_DTBL_LENGTH; i++) {
ch->dtbl[i].buffer = base + (ch->blksz * (i % ch->blkcnt));
ch->dtbl[i].length = ICH_BDC_IOC
| (ch->blksz / ch->parent->sample_size);
}
}
static int
ichchan_free(kobj_t obj, void *data)
{
struct sc_chinfo *ch;
struct sc_info *sc;
ch = (struct sc_chinfo *)data;
sc = (ch != NULL) ? ch->parent : NULL;
if (ch != NULL && sc != NULL) {
ICH_DMA_ATTR(sc, sndbuf_getbuf(ch->buffer),
sndbuf_getmaxsize(ch->buffer), PAT_WRITE_BACK);
}
return (1);
}
static void *
ichchan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
{
struct sc_info *sc = devinfo;
struct sc_chinfo *ch;
unsigned int num;
ICH_LOCK(sc);
num = sc->chnum++;
ch = &sc->ch[num];
ch->num = num;
ch->buffer = b;
ch->channel = c;
ch->parent = sc;
ch->run = 0;
ch->dtbl = sc->dtbl + (ch->num * ICH_DTBL_LENGTH);
ch->desc_addr = sc->desc_addr +
(ch->num * ICH_DTBL_LENGTH * sizeof(struct ich_desc));
ch->blkcnt = sc->blkcnt;
ch->blksz = sc->bufsz / ch->blkcnt;
switch(ch->num) {
case 0: /* play */
KASSERT(dir == PCMDIR_PLAY, ("wrong direction"));
ch->regbase = ICH_REG_PO_BASE;
ch->spdreg = (sc->hasvra) ? AC97_REGEXT_FDACRATE : 0;
ch->imask = ICH_GLOB_STA_POINT;
break;
case 1: /* record */
KASSERT(dir == PCMDIR_REC, ("wrong direction"));
ch->regbase = ICH_REG_PI_BASE;
ch->spdreg = (sc->hasvra) ? AC97_REGEXT_LADCRATE : 0;
ch->imask = ICH_GLOB_STA_PIINT;
break;
case 2: /* mic */
KASSERT(dir == PCMDIR_REC, ("wrong direction"));
ch->regbase = ICH_REG_MC_BASE;
ch->spdreg = (sc->hasvrm) ? AC97_REGEXT_MADCRATE : 0;
ch->imask = ICH_GLOB_STA_MINT;
break;
default:
return (NULL);
}
if (sc->flags & ICH_FIXED_RATE)
ch->spdreg = 0;
ICH_UNLOCK(sc);
if (sndbuf_alloc(ch->buffer, sc->chan_dmat, sc->bufsz) != 0)
return (NULL);
ICH_DMA_ATTR(sc, sndbuf_getbuf(ch->buffer),
sndbuf_getmaxsize(ch->buffer), PAT_UNCACHEABLE);
ICH_LOCK(sc);
ich_wr(sc, ch->regbase + ICH_REG_X_BDBAR, (uint32_t)(ch->desc_addr), 4);
ICH_UNLOCK(sc);
return (ch);
}
