void
dmac3_attach(device_t parent, device_t self, void *aux)
{
struct dmac3_softc *sc = device_private(self);
struct apbus_attach_args *apa = aux;
struct dmac3reg *reg;
static paddr_t dmamap = DMAC3_PAGEMAP;
static vaddr_t dmaaddr = 0;
sc->sc_dev = self;
reg = (void *)apa->apa_hwbase;
sc->sc_reg = reg;
sc->sc_ctlnum = apa->apa_ctlnum;
sc->sc_dmamap = (uint32_t *)dmamap;
sc->sc_dmaaddr = dmaaddr;
dmamap += 0x1000;
dmaaddr += 0x200000;
sc->sc_conf = DMAC3_CONF_PCEN | DMAC3_CONF_DCEN | DMAC3_CONF_FASTACCESS;
dmac3_reset(sc);
aprint_normal(" slot%d addr 0x%lx", apa->apa_slotno, apa->apa_hwbase);
aprint_normal(": ctlnum = %d, map = %p, va = %lx",
apa->apa_ctlnum, sc->sc_dmamap, sc->sc_dmaaddr);
aprint_normal("\n");
}
void
dmac3_start(struct dmac3_softc *sc, vaddr_t addr, int len, int direction)
{
struct dmac3reg *reg = sc->sc_reg;
paddr_t pa;
vaddr_t start, end, v;
volatile uint32_t *p;
if (reg->csr & DMAC3_CSR_ENABLE)
dmac3_reset(sc);
start = mips_trunc_page(addr);
end = mips_round_page(addr + len);
p = sc->sc_dmamap;
for (v = start; v < end; v += PAGE_SIZE) {
pa = kvtophys(v);
mips_dcache_wbinv_range(MIPS_PHYS_TO_KSEG0(pa), PAGE_SIZE);
*p++ = 0;
*p++ = (pa >> PGSHIFT) | 0xc0000000;
}
*p++ = 0;
*p++ = 0x003fffff;
addr &= PGOFSET;
addr += sc->sc_dmaaddr;
reg->len = len;
reg->addr = addr;
reg->intr = DMAC3_INTR_EOPIE | DMAC3_INTR_INTEN;
reg->csr = DMAC3_CSR_ENABLE | direction | BURST_MODE | APAD_MODE;
}
int
dmac3_intr(void *v)
{
struct dmac3_softc *sc = v;
struct dmac3reg *reg = sc->sc_reg;
int intr, conf, rv = 1;
intr = reg->intr;
if ((intr & DMAC3_INTR_INT) == 0)
return 0;
/* clear interrupt */
conf = reg->conf;
reg->conf = conf;
reg->intr = intr;
if (intr & DMAC3_INTR_PERR) {
printf("%s: intr = 0x%x\n", device_xname(sc->sc_dev), intr);
rv = -1;
}
if (conf & (DMAC3_CONF_IPER | DMAC3_CONF_MPER | DMAC3_CONF_DERR)) {
printf("%s: conf = 0x%x\n", device_xname(sc->sc_dev), conf);
if (conf & DMAC3_CONF_DERR) {
printf("DMA address = 0x%x\n", reg->addr);
printf("resetting DMA...\n");
dmac3_reset(sc);
}
}
return rv;
}
void
spifi_attach(device_t parent, device_t self, void *aux)
{
struct spifi_softc *sc = device_private(self);
struct apbus_attach_args *apa = aux;
struct dmac3_softc *dma;
int intr, i;
sc->sc_dev = self;
/* Initialize scbs. */
TAILQ_INIT(&sc->free_scb);
TAILQ_INIT(&sc->ready_scb);
for (i = 0; i < __arraycount(sc->sc_scb); i++)
TAILQ_INSERT_TAIL(&sc->free_scb, &sc->sc_scb[i], chain);
sc->sc_reg = (struct spifi_reg *)apa->apa_hwbase;
sc->sc_id = 7; /* XXX */
/* Find my dmac3. */
dma = dmac3_link(apa->apa_ctlnum);
if (dma == NULL) {
aprint_error(": cannot find slave dmac\n");
return;
}
sc->sc_dma = dma;
aprint_normal(" slot%d addr 0x%lx", apa->apa_slotno, apa->apa_hwbase);
aprint_normal(": SCSI ID = %d, using %s\n",
sc->sc_id, device_xname(dma->sc_dev));
dmac3_reset(sc->sc_dma);
DMAC3_SLOWACCESS(sc);
spifi_reset(sc);
DMAC3_FASTACCESS(sc);
sc->sc_adapter.adapt_dev = self;
sc->sc_adapter.adapt_nchannels = 1;
sc->sc_adapter.adapt_openings = 7;
sc->sc_adapter.adapt_max_periph = 1;
sc->sc_adapter.adapt_ioctl = NULL;
sc->sc_adapter.adapt_minphys = minphys;
sc->sc_adapter.adapt_request = spifi_scsipi_request;
memset(&sc->sc_channel, 0, sizeof(sc->sc_channel));
sc->sc_channel.chan_adapter = &sc->sc_adapter;
sc->sc_channel.chan_bustype = &scsi_bustype;
sc->sc_channel.chan_channel = 0;
sc->sc_channel.chan_ntargets = 8;
sc->sc_channel.chan_nluns = 8;
sc->sc_channel.chan_id = sc->sc_id;
if (apa->apa_slotno == 0)
intr = NEWS5000_INT0_DMAC;
else
intr = SLOTTOMASK(apa->apa_slotno);
apbus_intr_establish(0, intr, 0, spifi_intr, sc, apa->apa_name,
apa->apa_ctlnum);
config_found(self, &sc->sc_channel, scsiprint);
}
