/* $OpenBSD: if_le.c,v 1.7 2002/05/13 19:45:51 jason Exp $ */ /* $NetBSD: if_le.c,v 1.17 2001/05/30 11:46:35 mrg Exp $ */ /*- * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace * Simulation Facility, NASA Ames Research Center; Paul Kranenburg. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif #include #include #include #include #include /*XXX*/ #include #include /* * LANCE registers. */ #define LEREG1_RDP 0 /* Register Data port */ #define LEREG1_RAP 2 /* Register Address port */ struct le_softc { struct am7990_softc sc_am7990; /* glue to MI code */ struct sbusdev sc_sd; /* sbus device */ bus_space_tag_t sc_bustag; bus_dma_tag_t sc_dmatag; bus_dmamap_t sc_dmamap; bus_space_handle_t sc_reg; }; #define MEMSIZE 0x4000 /* LANCE memory size */ int lematch_sbus(struct device *, void *, void *); void leattach_sbus(struct device *, struct device *, void *); /* * Media types supported. */ struct cfattach le_sbus_ca = { sizeof(struct le_softc), lematch_sbus, leattach_sbus }; static void lewrcsr(struct am7990_softc *, u_int16_t, u_int16_t); static u_int16_t lerdcsr(struct am7990_softc *, u_int16_t); static void lewrcsr(sc, port, val) struct am7990_softc *sc; u_int16_t port, val; { struct le_softc *lesc = (struct le_softc *)sc; bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); bus_space_barrier(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, 2, BUS_SPACE_BARRIER_WRITE); bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val); bus_space_barrier(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, 2, BUS_SPACE_BARRIER_WRITE); #if defined(SUN4M) /* * We need to flush the Sbus->Mbus write buffers. This can most * easily be accomplished by reading back the register that we * just wrote (thanks to Chris Torek for this solution). */ if (CPU_ISSUN4M) { volatile u_int16_t discard; discard = bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP); } #endif } static u_int16_t lerdcsr(sc, port) struct am7990_softc *sc; u_int16_t port; { struct le_softc *lesc = (struct le_softc *)sc; bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); bus_space_barrier(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, 2, BUS_SPACE_BARRIER_WRITE); return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP)); } int lematch_sbus(parent, vcf, aux) struct device *parent; void *vcf; void *aux; { struct cfdata *cf = vcf; struct sbus_attach_args *sa = aux; return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); } void leattach_sbus(parent, self, aux) struct device *parent, *self; void *aux; { struct sbus_attach_args *sa = aux; struct le_softc *lesc = (struct le_softc *)self; struct am7990_softc *sc = &lesc->sc_am7990; bus_dma_tag_t dmatag; struct sbusdev *sd; /* XXX the following declarations should be elsewhere */ extern void myetheraddr(u_char *); lesc->sc_bustag = sa->sa_bustag; lesc->sc_dmatag = dmatag = sa->sa_dmatag; if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot, sa->sa_reg[0].sbr_offset, sa->sa_reg[0].sbr_size, BUS_SPACE_MAP_LINEAR, 0, &lesc->sc_reg) != 0) { printf(": cannot map registers\n"); return; } /* * Look for an "unallocated" lebuffer and pair it with * this `le' device on the assumption that we're on * a pre-historic ROM that doesn't establish le<=>lebuffer * parent-child relationships. */ for (sd = ((struct sbus_softc *)parent)->sc_sbdev; sd != NULL; sd = sd->sd_bchain) { struct lebuf_softc *lebuf = (struct lebuf_softc *)sd->sd_dev; if (strncmp("lebuffer", sd->sd_dev->dv_xname, 8) != 0) continue; if (lebuf->attached != 0) continue; sc->sc_mem = lebuf->sc_buffer; sc->sc_memsize = lebuf->sc_bufsiz; sc->sc_addr = 0; /* Lance view is offset by buffer location */ lebuf->attached = 1; /* That old black magic... */ sc->sc_conf3 = getpropint(sa->sa_node, "busmaster-regval", LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON); break; } lesc->sc_sd.sd_reset = (void *)am7990_reset; sbus_establish(&lesc->sc_sd, &sc->sc_dev); if (sc->sc_mem == 0) { bus_dma_segment_t seg; int rseg, error; /* Get a DMA handle */ if ((error = bus_dmamap_create(dmatag, MEMSIZE, 1, MEMSIZE, 0, BUS_DMA_NOWAIT|BUS_DMA_24BIT, &lesc->sc_dmamap)) != 0) { printf(": DMA map create error %d\n", error); return; } /* Allocate DMA buffer */ if ((error = bus_dmamem_alloc(dmatag, MEMSIZE, 0, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT|BUS_DMA_24BIT)) != 0){ printf(": DMA buffer allocation error %d\n", error); return; } /* Map DMA buffer into kernel space */ if ((error = bus_dmamem_map(dmatag, &seg, rseg, MEMSIZE, (caddr_t *)&sc->sc_mem, BUS_DMA_NOWAIT|BUS_DMA_COHERENT|BUS_DMA_24BIT)) != 0) { printf(": DMA buffer map error %d\n", error); bus_dmamem_free(lesc->sc_dmatag, &seg, rseg); return; } /* Load DMA buffer */ if ((error = bus_dmamap_load(dmatag, lesc->sc_dmamap, sc->sc_mem, MEMSIZE, NULL, BUS_DMA_NOWAIT|BUS_DMA_COHERENT|BUS_DMA_24BIT)) != 0) { printf(": DMA buffer map load error %d\n", error); bus_dmamem_free(dmatag, &seg, rseg); bus_dmamem_unmap(dmatag, sc->sc_mem, MEMSIZE); return; } sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr & 0xffffff; sc->sc_memsize = MEMSIZE; sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON; } myetheraddr(sc->sc_arpcom.ac_enaddr); sc->sc_hasifmedia = 1; sc->sc_copytodesc = am7990_copytobuf_contig; sc->sc_copyfromdesc = am7990_copyfrombuf_contig; sc->sc_copytobuf = am7990_copytobuf_contig; sc->sc_copyfrombuf = am7990_copyfrombuf_contig; sc->sc_zerobuf = am7990_zerobuf_contig; sc->sc_rdcsr = lerdcsr; sc->sc_wrcsr = lewrcsr; am7990_config(&lesc->sc_am7990); /* Establish interrupt handler */ if (sa->sa_nintr != 0) (void)bus_intr_establish(lesc->sc_bustag, sa->sa_pri, IPL_NET, 0, am7990_intr, sc); }