void
tcbus_attach(device_t parent, device_t self, void *aux)
{
struct vsbus_attach_args * const va = aux;
struct tcbus_softc * const sc = device_private(self);
struct tcbus_attach_args tba;
struct pte *pte;
const size_t nentries = 32768;
int error;
int i;
error = bus_space_map(va->va_memt, KA4x_TURBO, 0x10000,
BUS_SPACE_MAP_LINEAR, &sc->sc_memh);
if (error) {
aprint_error(": failed to map TC slot 0: %d\n", error);
return;
}
sc->sc_slots[0].tcs_addr = sc->sc_memh;
sc->sc_slots[0].tcs_cookie = sc;
tba.tba_speed = TC_SPEED_12_5_MHZ;
tba.tba_slots = sc->sc_slots;
tba.tba_nslots = 1;
tba.tba_intr_evcnt = tcbus_intr_evcnt;
tba.tba_intr_establish = tcbus_intr_establish;
tba.tba_intr_disestablish = tcbus_intr_disestablish;
tba.tba_get_dma_tag = tcbus_get_dma_tag;
vax_sgmap_dmatag_init(&sc->sc_dmatag, sc, nentries);
pte = (struct pte *) vax_map_physmem(KA4x_TURBOMAPS,
nentries * sizeof(pte[0]));
for (i = nentries; i > 0; )
((uint32_t *) pte)[--i] = 0;
sc->sc_dmatag._sgmap = &sc->sc_sgmap;
/*
* Initialize the SGMAP.
*/
vax_sgmap_init(&sc->sc_dmatag, &sc->sc_sgmap, "tc_sgmap",
sc->sc_dmatag._wbase, sc->sc_dmatag._wsize, pte, 0);
aprint_normal("\n");
aprint_verbose_dev(self, "32K entry DMA SGMAP at PA 0x%x (VA %p)\n",
KA4x_TURBOMAPS, pte);
tcbus_dmat = &sc->sc_dmatag;
/* XXX: why not config_found(9)?? */
tcattach(parent, self, &tba);
}
void
uba_dma_init(struct uba_vsoftc *sc)
{
bus_dma_tag_t t;
struct pte *pte;
/*
* Initialize the DMA tag used for sgmap-mapped DMA.
*/
t = &sc->uv_dmat;
t->_cookie = sc;
t->_wbase = 0;
t->_wsize = sc->uv_size;
t->_boundary = 0;
t->_sgmap = &sc->uv_sgmap;
t->_dmamap_create = uba_bus_dmamap_create_sgmap;
t->_dmamap_destroy = uba_bus_dmamap_destroy_sgmap;
t->_dmamap_load = uba_bus_dmamap_load_sgmap;
t->_dmamap_load_mbuf = uba_bus_dmamap_load_mbuf_sgmap;
t->_dmamap_load_uio = uba_bus_dmamap_load_uio_sgmap;
t->_dmamap_load_raw = uba_bus_dmamap_load_raw_sgmap;
t->_dmamap_unload = uba_bus_dmamap_unload_sgmap;
t->_dmamap_sync = uba_bus_dmamap_sync;
t->_dmamem_alloc = _bus_dmamem_alloc;
t->_dmamem_free = _bus_dmamem_free;
t->_dmamem_map = _bus_dmamem_map;
t->_dmamem_unmap = _bus_dmamem_unmap;
t->_dmamem_mmap = _bus_dmamem_mmap;
/*
* Map in Unibus map registers, if not mapped in already.
*/
if (sc->uv_uba) {
pte = sc->uv_uba->uba_map;
} else {
pte = (struct pte *)vax_map_physmem(sc->uv_addr,
vax_btoc(vax_btoc(sc->uv_size) * sizeof(struct pte)));
if (pte == 0)
panic("uba_dma_init");
}
/*
* Initialize the SGMAP.
*/
vax_sgmap_init(t, &sc->uv_sgmap, "uba_sgmap", 0, sc->uv_size, pte, 0);
}
