1 /* $NetBSD: if_le_sbdio.c,v 1.6 2010/01/19 22:06:20 pooka Exp $ */ 2 3 /*- 4 * Copyright (c) 1996, 2005 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Adam Glass and Gordon W. Ross. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: if_le_sbdio.c,v 1.6 2010/01/19 22:06:20 pooka Exp $"); 34 35 #include "opt_inet.h" 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/mbuf.h> 40 #include <sys/syslog.h> 41 #include <sys/socket.h> 42 #include <sys/device.h> 43 44 #include <net/if.h> 45 #include <net/if_ether.h> 46 #include <net/if_media.h> 47 48 #ifdef INET 49 #include <netinet/in.h> 50 #include <netinet/if_inarp.h> 51 #endif 52 53 #include <machine/bus.h> 54 #include <machine/intr.h> 55 #include <machine/sbdiovar.h> 56 #include <machine/sbdvar.h> /* for ether_addr() */ 57 58 #include <dev/ic/lancereg.h> 59 #include <dev/ic/lancevar.h> 60 #include <dev/ic/am7990reg.h> 61 #include <dev/ic/am7990var.h> 62 63 #define LEREG1_RDP 0 /* offset to lance data register */ 64 #define LEREG1_RAP 6 /* offset to lance address regsiter */ 65 #define LE_MEMSIZE (64 * 1024) 66 67 struct le_sbdio_softc { 68 struct am7990_softc sc_am7990; 69 70 bus_space_tag_t sc_bst; 71 bus_space_handle_t sc_bsh; 72 bus_dma_tag_t sc_dmat; 73 bus_dmamap_t sc_dmamap; 74 }; 75 76 int le_sbdio_match(device_t, struct cfdata *, void *); 77 void le_sbdio_attach(device_t, struct device *, void *); 78 static void le_sbdio_wrcsr(struct lance_softc *, uint16_t, uint16_t); 79 static uint16_t le_sbdio_rdcsr(struct lance_softc *, uint16_t); 80 81 CFATTACH_DECL_NEW(le_sbdio, sizeof(struct le_sbdio_softc), 82 le_sbdio_match, le_sbdio_attach, NULL, NULL); 83 84 int 85 le_sbdio_match(device_t parent, cfdata_t cf, void *aux) 86 { 87 struct sbdio_attach_args *sa = aux; 88 89 return strcmp(sa->sa_name, "lance") ? 0 : 1; 90 } 91 92 void 93 le_sbdio_attach(device_t parent, device_t self, void *aux) 94 { 95 struct le_sbdio_softc *lesc = device_private(self); 96 struct sbdio_attach_args *sa = aux; 97 struct lance_softc *sc = &lesc->sc_am7990.lsc; 98 bus_dma_segment_t seg; 99 int rseg; 100 101 sc->sc_dev = self; 102 lesc->sc_dmat = sa->sa_dmat; 103 lesc->sc_bst = sa->sa_bust; 104 105 if (bus_space_map(lesc->sc_bst, sa->sa_addr1, 8 /* XXX */, 106 BUS_SPACE_MAP_LINEAR, &lesc->sc_bsh) != 0) { 107 aprint_error(": cannot map registers\n"); 108 return; 109 } 110 111 /* Allocate DMA memory for the chip. */ 112 if (bus_dmamem_alloc(lesc->sc_dmat, LE_MEMSIZE, 0, 0, &seg, 1, &rseg, 113 BUS_DMA_NOWAIT) != 0) { 114 aprint_error(": can't allocate DMA memory\n"); 115 return; 116 } 117 if (bus_dmamem_map(lesc->sc_dmat, &seg, rseg, LE_MEMSIZE, 118 (void **)&sc->sc_mem, BUS_DMA_NOWAIT|BUS_DMA_COHERENT) != 0) { 119 aprint_error(": can't map DMA memory\n"); 120 return; 121 } 122 if (bus_dmamap_create(lesc->sc_dmat, LE_MEMSIZE, 1, LE_MEMSIZE, 123 0, BUS_DMA_NOWAIT, &lesc->sc_dmamap) != 0) { 124 aprint_error(": can't create DMA map\n"); 125 return; 126 } 127 if (bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmamap, sc->sc_mem, 128 LE_MEMSIZE, NULL, BUS_DMA_NOWAIT) != 0) { 129 aprint_error(": can't load DMA map\n"); 130 return; 131 } 132 133 sc->sc_memsize = LE_MEMSIZE; 134 sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr; 135 sc->sc_conf3 = LE_C3_BSWP | LE_C3_BCON; 136 (*platform.ether_addr)(sc->sc_enaddr); 137 138 sc->sc_copytodesc = lance_copytobuf_contig; 139 sc->sc_copyfromdesc = lance_copyfrombuf_contig; 140 sc->sc_copytobuf = lance_copytobuf_contig; 141 sc->sc_copyfrombuf = lance_copyfrombuf_contig; 142 sc->sc_zerobuf = lance_zerobuf_contig; 143 #ifdef LEDEBUG 144 sc->sc_debug = 0xff; 145 #endif 146 sc->sc_rdcsr = le_sbdio_rdcsr; 147 sc->sc_wrcsr = le_sbdio_wrcsr; 148 149 am7990_config(&lesc->sc_am7990); 150 intr_establish(sa->sa_irq, am7990_intr, sc); 151 } 152 153 static void 154 le_sbdio_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val) 155 { 156 struct le_sbdio_softc *lesc = (struct le_sbdio_softc *)sc; 157 158 bus_space_write_2(lesc->sc_bst, lesc->sc_bsh, LEREG1_RAP, port); 159 bus_space_write_2(lesc->sc_bst, lesc->sc_bsh, LEREG1_RDP, val); 160 } 161 162 static uint16_t 163 le_sbdio_rdcsr(struct lance_softc *sc, uint16_t port) 164 { 165 struct le_sbdio_softc *lesc = (struct le_sbdio_softc *)sc; 166 167 bus_space_write_2(lesc->sc_bst, lesc->sc_bsh, LEREG1_RAP, port); 168 return bus_space_read_2(lesc->sc_bst, lesc->sc_bsh, LEREG1_RDP); 169 } 170