static int
via8233chan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
{
struct via_chinfo *ch = data;
sndbuf_resize(ch->buffer, SEGS_PER_CHAN, blocksize);
ch->blksz = sndbuf_getblksz(ch->buffer);
return ch->blksz;
}
static int
atiixp_chan_setblocksize(kobj_t obj, void *data, uint32_t blksz)
{
struct atiixp_chinfo *ch = data;
struct atiixp_info *sc = ch->parent;
if (blksz > (sc->bufsz / ch->dma_segs))
blksz = sc->bufsz / ch->dma_segs;
sndbuf_resize(ch->buffer, ch->dma_segs, blksz);
return sndbuf_getblksz(ch->buffer);
}
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 void
atiixp_buildsgdt(struct atiixp_chinfo *ch)
{
uint32_t addr, blksz;
int i;
addr = sndbuf_getbufaddr(ch->buffer);
blksz = sndbuf_getblksz(ch->buffer);
for (i = 0; i < ch->dma_segs; i++) {
ch->sgd_table[i].addr = htole32(addr + (i * blksz));
ch->sgd_table[i].status = htole16(0);
ch->sgd_table[i].size = htole16(blksz >> 2);
ch->sgd_table[i].next = htole32((uint32_t)ch->sgd_addr +
(((i + 1) % ch->dma_segs) *
sizeof(struct atiixp_dma_op)));
}
}
static int
atiixp_chan_getptr(kobj_t obj, void *data)
{
struct atiixp_chinfo *ch = data;
struct atiixp_info *sc = ch->parent;
uint32_t addr, align, retry, sz;
volatile uint32_t ptr;
addr = sndbuf_getbufaddr(ch->buffer);
align = (ch->fmt & AFMT_32BIT) ? 7 : 3;
retry = 100;
sz = sndbuf_getblksz(ch->buffer) * ch->dma_segs;
atiixp_lock(sc);
do {
ptr = atiixp_rd(sc, ch->dma_dt_cur_bit);
if (ptr < addr)
continue;
ptr -= addr;
if (ptr < sz && !(ptr & align))
break;
} while (--retry);
atiixp_unlock(sc);
#if 0
if (retry != 100) {
device_printf(sc->dev,
"%saligned hwptr: dir=PCMDIR_%s ptr=%u fmt=0x%08x retry=%d\n",
(ptr & align) ? "un" : "",
(ch->dir == PCMDIR_PLAY) ? "PLAY" : "REC", ptr,
ch->fmt, 100 - retry);
}
#endif
return (retry > 0) ? ptr : 0;
}