2 * Copyright (c) 1994-2000
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30 * $FreeBSD: src/sys/dev/lnc/if_lnc_isa.c,v 1.12 2001/07/04 13:00:19 nyan Exp $
31 * $DragonFly: src/sys/dev/netif/lnc/if_lnc_isa.c,v 1.7 2005/11/28 17:13:43 dillon Exp $
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <sys/kernel.h>
38 #include <sys/malloc.h>
39 #include <sys/socket.h>
40 #include <sys/serialize.h>
42 #include <machine/bus.h>
43 #include <machine/resource.h>
45 #include <sys/thread2.h>
47 #include <net/ethernet.h>
49 #include <net/if_arp.h>
51 #include <bus/isa/isavar.h>
53 #include <dev/netif/lnc/if_lncvar.h>
54 #include <dev/netif/lnc/if_lncreg.h>
56 static int lnc_isa_detach(device_t);
58 static struct isa_pnp_id lnc_pnp_ids[] = {
63 lnc_legacy_probe(device_t dev)
65 struct lnc_softc *sc = device_get_softc(dev);
68 sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->portrid,
72 device_printf(dev, "Failed to allocate I/O ports\n");
76 sc->lnc_btag = rman_get_bustag(sc->portres);
77 sc->lnc_bhandle = rman_get_bushandle(sc->portres);
80 * There isn't any way to determine if a NIC is a BICC. Basically, if
81 * the lance probe succeeds using the i/o addresses of the BICC then
82 * we assume it's a BICC.
87 sc->nic.mem_mode = DMA_FIXED;
88 /* XXX Should set BICC_IOSIZE et al somewhere to alloc
89 resources correctly */
91 if ((sc->nic.ic = lance_probe(sc))) {
92 device_set_desc(dev, "BICC Isolan");
97 /* It's not a BICC so try the standard NE2100 ports */
100 if ((sc->nic.ic = lance_probe(sc))) {
101 sc->nic.ident = NE2100;
102 device_set_desc(dev, "NE2100");
113 lnc_isa_probe(device_t dev)
117 pnp = ISA_PNP_PROBE(device_get_parent(dev), dev, lnc_pnp_ids);
119 /* It's not a PNP card, see if we support it by probing it */
120 return (lnc_legacy_probe(dev));
121 } else if (pnp == ENXIO) {
124 /* Found PNP card we support */
130 lnc_alloc_callback(void *arg, bus_dma_segment_t *seg, int nseg, int error)
137 lnc_isa_attach(device_t dev)
139 lnc_softc_t *sc = device_get_softc(dev);
141 bus_size_t lnc_mem_size;
144 * The probe routines can allocate resources and to make our
145 * live easier, bzero the softc now.
147 bzero(sc, sizeof(*sc));
150 sc->portres = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &sc->portrid,
154 device_printf(dev, "Failed to allocate I/O ports\n");
160 sc->drqres = bus_alloc_resource_any(dev, SYS_RES_DRQ, &sc->drqrid,
164 device_printf(dev, "Failed to allocate DMA channel\n");
169 if (isa_get_irq(dev) == -1)
170 bus_set_resource(dev, SYS_RES_IRQ, 0, 10, 1);
173 sc->irqres = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irqrid,
177 device_printf(dev, "Failed to allocate irq\n");
182 /* XXX temp setting for nic */
183 sc->nic.mem_mode = DMA_FIXED;
187 if (sc->nic.ident == NE2100) {
196 /* Create a DMA tag describing the ring memory we need */
198 lnc_mem_size = ((NDESC(sc->nrdre) + NDESC(sc->ntdre)) *
199 sizeof(struct host_ring_entry));
201 lnc_mem_size += (NDESC(sc->nrdre) * RECVBUFSIZE) +
202 (NDESC(sc->ntdre) * TRANSBUFSIZE);
204 error = bus_dma_tag_create(NULL, /* parent */
207 BUS_SPACE_MAXADDR_24BIT, /* lowaddr */
208 BUS_SPACE_MAXADDR, /* highaddr */
209 NULL, NULL, /* filter, filterarg */
210 lnc_mem_size, /* segsize */
212 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
213 BUS_DMA_ALLOCNOW, /* flags */
217 device_printf(dev, "Can't create DMA tag\n");
221 error = bus_dmamem_alloc(sc->dmat, (void **)&sc->recv_ring,
222 BUS_DMA_WAITOK, &sc->dmamap);
225 device_printf(dev, "Couldn't allocate memory\n");
229 error = bus_dmamap_load(sc->dmat, sc->dmamap, sc->recv_ring,
230 lnc_mem_size, lnc_alloc_callback,
234 device_printf(dev, "Couldn't load DMA map\n");
238 isa_dmacascade(rman_get_start(sc->drqres));
240 /* Call generic attach code */
241 if (! lnc_attach_common(dev)) {
242 device_printf(dev, "Generic attach code failed\n");
247 error = bus_setup_intr(dev, sc->irqres, INTR_NETSAFE, lncintr,
249 sc->arpcom.ac_if.if_serializer);
251 device_printf(dev, "Failed to setup irq handler\n");
252 ether_ifdetach(&sc->arpcom.ac_if);
264 lnc_isa_detach(device_t dev)
266 lnc_softc_t *sc = device_get_softc(dev);
268 lwkt_serialize_enter(sc->arpcom.ac_if.if_serializer);
270 if (device_is_attached(dev)) {
271 ether_ifdetach(&sc->arpcom.ac_if);
276 bus_teardown_intr(dev, sc->irqres, sc->intrhand);
279 bus_release_resource(dev, SYS_RES_IRQ, sc->irqrid, sc->irqres);
281 bus_release_resource(dev, SYS_RES_IOPORT,
282 sc->portrid, sc->portres);
284 bus_release_resource(dev, SYS_RES_DRQ, sc->drqrid, sc->drqres);
286 bus_dmamap_unload(sc->dmat, sc->dmamap);
287 bus_dmamem_free(sc->dmat, sc->recv_ring, sc->dmamap);
290 bus_dma_tag_destroy(sc->dmat);
292 lwkt_serialize_exit(sc->arpcom.ac_if.if_serializer);
296 static device_method_t lnc_isa_methods[] = {
297 /* DEVMETHOD(device_identify, lnc_isa_identify), */
298 DEVMETHOD(device_probe, lnc_isa_probe),
299 DEVMETHOD(device_attach, lnc_isa_attach),
300 DEVMETHOD(device_detach, lnc_isa_detach),
302 DEVMETHOD(device_suspend, lnc_isa_suspend),
303 DEVMETHOD(device_resume, lnc_isa_resume),
304 DEVMETHOD(device_shutdown, lnc_isa_shutdown),
309 static driver_t lnc_isa_driver = {
312 sizeof(struct lnc_softc),
315 DRIVER_MODULE(if_lnc, isa, lnc_isa_driver, lnc_devclass, 0, 0);