/* $NetBSD: if_le.c,v 1.13 2010/01/19 22:06:21 pooka Exp $ */ /*- * Copyright (c) 1996, 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Adam Glass, Gordon W. Ross and Wayne Knowles * * 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. * * 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 __KERNEL_RCSID(0, "$NetBSD: if_le.c,v 1.13 2010/01/19 22:06:21 pooka Exp $"); #include "opt_inet.h" #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #endif #include #include #include #include #include #include #include #include /* * LANCE registers. */ #define LEREG1_RDP 2 /* Offset to LANCE data register */ #define LEREG1_RAP 6 /* Offset to LANCE address register */ /* * Ethernet software status per interface. * The real stuff is in dev/ic/am7990var.h */ struct le_softc { struct am7990_softc sc_am7990; /* glue to MI code */ bus_space_tag_t sc_bustag; bus_dma_tag_t sc_dmatag; bus_space_handle_t sc_reg; /* LANCE registers */ bus_dmamap_t sc_dmamap; struct evcnt sc_intrcnt; /* Interrupt event counter */ }; static int le_match(device_t, cfdata_t, void *); static void le_attach(device_t, device_t, void *); CFATTACH_DECL_NEW(le, sizeof(struct le_softc), le_match, le_attach, NULL, NULL); static int le_attached; #if defined(_KERNEL_OPT) #include "opt_ddb.h" #endif #ifdef DDB #define integrate #define hide #else #define integrate static inline #define hide static #endif int le_intr(void *); hide void lewrcsr(struct lance_softc *, uint16_t, uint16_t); hide uint16_t lerdcsr(struct lance_softc *, uint16_t); hide void lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) { struct le_softc *lesc = (struct le_softc *)sc; bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP, val); } hide uint16_t lerdcsr(struct lance_softc *sc, uint16_t port) { struct le_softc *lesc = (struct le_softc *)sc; bus_space_write_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RAP, port); return (bus_space_read_2(lesc->sc_bustag, lesc->sc_reg, LEREG1_RDP)); } int le_match(device_t parent, cfdata_t cf, void *aux) { struct confargs *ca = aux; int addr; if (strcmp(ca->ca_name, "le")) return 0; if (le_attached) return 0; addr = LANCE_PORT; if (badaddr((void *)addr, 1)) return 0; return 1; } #define LE_MEMSIZE (32*1024) void le_attach(device_t parent, device_t self, void *aux) { struct le_softc *lesc = device_private(self); struct lance_softc *sc = &lesc->sc_am7990.lsc; struct confargs *ca = aux; bus_dma_tag_t dmat; bus_dma_segment_t seg; int rseg; uint8_t *id; int i; void *kvaddr; sc->sc_dev = self; id = (uint8_t *)ETHER_ID; lesc->sc_bustag = ca->ca_bustag; dmat = lesc->sc_dmatag = ca->ca_dmatag; if (bus_space_map(ca->ca_bustag, ca->ca_addr, 8, /* size */ BUS_SPACE_MAP_LINEAR, &lesc->sc_reg) != 0) { aprint_error(": cannot map registers\n"); return; } /* * Allocate a physically contiguous DMA area for the chip. */ if (bus_dmamem_alloc(dmat, LE_MEMSIZE, 0, 0, &seg, 1, &rseg, BUS_DMA_NOWAIT)) { aprint_error(": can't allocate DMA area\n"); return; } /* Map pages into kernel memory */ if (bus_dmamem_map(dmat, &seg, rseg, LE_MEMSIZE, &kvaddr, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) { aprint_error(": can't map DMA area\n"); bus_dmamem_free(dmat, &seg, rseg); return; } /* Build DMA map so we can get physical address */ if (bus_dmamap_create(dmat, LE_MEMSIZE, 1, LE_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmamap)) { aprint_error(": can't create DMA map\n"); goto bad; } if (bus_dmamap_load(dmat, lesc->sc_dmamap, kvaddr, LE_MEMSIZE, NULL, BUS_DMA_NOWAIT)) { aprint_error(": can't load DMA map\n"); goto bad; } sc->sc_memsize = LE_MEMSIZE; /* 16K Buffer space*/ sc->sc_mem = (void *)MIPS_PHYS_TO_KSEG1(kvaddr); sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr; sc->sc_conf3 = LE_C3_BSWP; /* Copy Ethernet hardware address from NVRAM */ for (i = 0; i < ETHER_ADDR_LEN; i++) sc->sc_enaddr[i] = id[i * 4 + 3]; /* XXX */ sc->sc_copytodesc = lance_copytobuf_contig; sc->sc_copyfromdesc = lance_copyfrombuf_contig; sc->sc_copytobuf = lance_copytobuf_contig; sc->sc_copyfrombuf = lance_copyfrombuf_contig; sc->sc_zerobuf = lance_zerobuf_contig; sc->sc_rdcsr = lerdcsr; sc->sc_wrcsr = lewrcsr; sc->sc_hwinit = NULL; evcnt_attach_dynamic(&lesc->sc_intrcnt, EVCNT_TYPE_INTR, NULL, device_xname(self), "intr"); bus_intr_establish(lesc->sc_bustag, SYS_INTR_ETHER, 0, 0, le_intr, lesc); am7990_config(&lesc->sc_am7990); return; bad: bus_dmamem_unmap(dmat, kvaddr, LE_MEMSIZE); bus_dmamem_free(dmat, &seg, rseg); } int le_intr(void *arg) { struct le_softc *lesc = arg; lesc->sc_intrcnt.ev_count++; return am7990_intr(&lesc->sc_am7990); }