static int
bt_mca_probe (device_t dev)
{
const char * desc;
mca_id_t id = mca_get_id(dev);
struct bt_probe_info info;
u_int32_t iobase = 0;
u_int32_t iosize = 0;
u_int8_t drq = 0;
u_int8_t irq = 0;
u_int8_t pos;
int result;
desc = mca_match_id(id, bt_mca_devs);
if (!desc)
return (ENXIO);
device_set_desc(dev, desc);
pos = (mca_pos_read(dev, BT_MCA_IOPORT_POS1) & BT_MCA_IOPORT_MASK1) |
(mca_pos_read(dev, BT_MCA_IOPORT_POS2) & BT_MCA_IOPORT_MASK2);
iobase = BT_MCA_IOPORT(pos);
iosize = BT_MCA_IOPORT_SIZE;
pos = mca_pos_read(dev, BT_MCA_DRQ_POS);
drq = BT_MCA_DRQ(pos);
pos = mca_pos_read(dev, BT_MCA_IRQ_POS);
irq = BT_MCA_IRQ(pos);
bt_mark_probed_iop(iobase);
mca_add_iospace(dev, iobase, iosize);
/* And allocate them */
bt_mca_alloc_resources(dev, BT_MCA_PROBE);
if (bt_port_probe(dev, &info) != 0) {
printf("bt_mca_probe: Probe failed for "
"card at slot %d\n", mca_get_slot(dev) + 1);
result = ENXIO;
} else {
mca_add_drq(dev, drq);
mca_add_irq(dev, irq);
result = BUS_PROBE_DEFAULT;
}
bt_mca_release_resources(dev);
return (result);
}
static int
bt_mca_alloc_resources(device_t dev, int mode)
{
struct resource * io = NULL;
struct resource * irq = NULL;
struct resource * drq = NULL;
int rid;
rid = 0;
io = bus_alloc_resource(dev, SYS_RES_IOPORT, &rid,
0, ~0, 1, RF_ACTIVE);
if (io == NULL) {
printf("bt_mca_alloc_resources() failed to allocate IOPORT\n");
return (ENOMEM);
}
if (mode == BT_MCA_ATTACH) {
rid = 0;
irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid,
0, ~0, 1, RF_ACTIVE);
if (irq == NULL) {
printf("bt_mca_alloc_resources() failed to allocate IRQ\n");
goto bad;
}
rid = 0;
drq = bus_alloc_resource(dev, SYS_RES_DRQ, &rid,
0, ~0, 1, RF_ACTIVE);
if (drq == NULL) {
printf("bt_mca_alloc_resources() failed to allocate DRQ\n");
goto bad;
}
}
bt_init_softc(dev, io, irq, drq);
return (0);
bad:
bt_mca_release_resources(dev);
return (ENOMEM);
}
static int
bt_mca_attach (device_t dev)
{
struct bt_softc * bt = device_get_softc(dev);
int error = 0;
/* Allocate resources */
if ((error = bt_mca_alloc_resources(dev, BT_MCA_ATTACH))) {
device_printf(dev, "Unable to allocate resources in bt_mca_attach()\n");
return (error);
}
isa_dmacascade(rman_get_start(bt->drq));
/* Allocate a dmatag for our CCB DMA maps */
if (bus_dma_tag_create( /* parent */ NULL,
/* alignemnt */ 1,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR_24BIT,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ btvlbouncefilter,
/* filterarg */ bt,
/* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
/* nsegments */ ~0,
/* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
/* flags */ 0,
/* lockfunc */ NULL,
/* lockarg */ NULL,
&bt->parent_dmat) != 0) {
bt_mca_release_resources(dev);
return (ENOMEM);
}
if (bt_init(dev)) {
bt_mca_release_resources(dev);
return (ENOMEM);
}
/* DMA tag for our sense buffers */
if (bus_dma_tag_create( /* parent */ bt->parent_dmat,
/* alignment */ 1,
/* boundary */ 0,
/* lowaddr */ BUS_SPACE_MAXADDR,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ NULL,
/* filterarg */ NULL,
/* maxsize */ bt->max_ccbs *
sizeof(struct scsi_sense_data),
/* nsegments */ 1,
/* maxsegsz */ BUS_SPACE_MAXSIZE_32BIT,
/* flags */ 0,
/* lockfunc */ NULL,
/* lockarg */ NULL,
&bt->sense_dmat) != 0) {
bt_mca_release_resources(dev);
return (ENOMEM);
}
bt->init_level++;
/* Allocation of sense buffers */
if (bus_dmamem_alloc(bt->sense_dmat,
(void **)&bt->sense_buffers,
BUS_DMA_NOWAIT, &bt->sense_dmamap) != 0) {
bt_mca_release_resources(dev);
return (ENOMEM);
}
bt->init_level++;
/* And permanently map them */
bus_dmamap_load(bt->sense_dmat, bt->sense_dmamap,
bt->sense_buffers,
bt->max_ccbs * sizeof(*bt->sense_buffers),
btmapsensebuffers, bt, /*flags*/0);
bt->init_level++;
if ((error = bt_attach(dev))) {
bt_mca_release_resources(dev);
return (error);
}
return (0);
}