int
ata_attach(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
int error, rid;
/* check that we have a virgin channel to attach */
if (ch->r_irq)
return EEXIST;
/* initialize the softc basics */
ch->dev = dev;
ch->state = ATA_IDLE;
lockinit(&ch->state_mtx, "ataattach_state", 0, 0);
lockinit(&ch->queue_mtx, "ataattach_queue", 0, 0);
ata_queue_init(ch);
/* reset the controller HW, the channel and device(s) */
while (ATA_LOCKING(dev, ATA_LF_LOCK) != ch->unit)
tsleep(&error, 0, "ataatch", 1);
ATA_RESET(dev);
ATA_LOCKING(dev, ATA_LF_UNLOCK);
/* setup interrupt delivery */
rid = ATA_IRQ_RID;
ch->r_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
RF_SHAREABLE | RF_ACTIVE);
if (!ch->r_irq) {
device_printf(dev, "unable to allocate interrupt\n");
return ENXIO;
}
if ((error = bus_setup_intr(dev, ch->r_irq, ATA_INTR_FLAGS,
(driver_intr_t *)ata_interrupt, ch, &ch->ih,
NULL))) {
device_printf(dev, "unable to setup interrupt\n");
return error;
}
/* probe and attach devices on this channel unless we are in early boot */
ata_identify(dev);
return 0;
}
static int
ata_usbchannel_attach(device_t dev)
{
struct ata_channel *ch = device_get_softc(dev);
/* initialize the softc basics */
ch->dev = dev;
ch->state = ATA_IDLE;
ch->hw.begin_transaction = ata_usbchannel_begin_transaction;
ch->hw.end_transaction = ata_usbchannel_end_transaction;
ch->hw.status = NULL;
ch->hw.command = NULL;
spin_init(&ch->state_mtx);
spin_init(&ch->queue_mtx);
ata_queue_init(ch);
/* XXX SOS reset the controller HW, the channel and device(s) */
/* ATA_RESET(dev); */
/* probe and attach device on this channel */
ch->devices = ATA_ATAPI_MASTER;
ata_identify(dev);
return 0;
}