sys/arch/ews4800mips/sbd/if_le_sbdio.c

   1 /*      $NetBSD: if_le_sbdio.c,v 1.4 2008/04/04 12:25:06 tsutsui 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 1.4 2008/04/04 12:25:06 tsutsui Exp $");
  34
  35 #include "opt_inet.h"
  36 #include "bpfilter.h"
  37
  38 #include <sys/param.h>
  39 #include <sys/systm.h>
  40 #include <sys/mbuf.h>
  41 #include <sys/syslog.h>
  42 #include <sys/socket.h>
  43 #include <sys/device.h>
  44
  45 #include <net/if.h>
  46 #include <net/if_ether.h>
  47 #include <net/if_media.h>
  48
  49 #ifdef INET
  50 #include <netinet/in.h>
  51 #include <netinet/if_inarp.h>
  52 #endif
  53
  54 #include <machine/bus.h>
  55 #include <machine/intr.h>
  56 #include <machine/sbdiovar.h>
  57 #include <machine/sbdvar.h>     /* for ether_addr() */
  58
  59 #include <dev/ic/lancereg.h>
  60 #include <dev/ic/lancevar.h>
  61 #include <dev/ic/am7990reg.h>
  62 #include <dev/ic/am7990var.h>
  63
  64 #define LEREG1_RDP      0       /* offset to lance data register */
  65 #define LEREG1_RAP      6       /* offset to lance address regsiter */
  66 #define LE_MEMSIZE      (64 * 1024)
  67
  68 struct le_sbdio_softc {
  69         struct am7990_softc sc_am7990;
  70
  71         bus_space_tag_t sc_bst;
  72         bus_space_handle_t sc_bsh;
  73         bus_dma_tag_t sc_dmat;
  74         bus_dmamap_t sc_dmamap;
  75 };
  76
  77 int le_sbdio_match(device_t, struct cfdata *, void *);
  78 void le_sbdio_attach(device_t, struct device *, void *);
  79 static void le_sbdio_wrcsr(struct lance_softc *, uint16_t, uint16_t);
  80 static uint16_t le_sbdio_rdcsr(struct lance_softc *, uint16_t);
  81
  82 CFATTACH_DECL_NEW(le_sbdio, sizeof(struct le_sbdio_softc),
  83     le_sbdio_match, le_sbdio_attach, NULL, NULL);
  84
  85 int
  86 le_sbdio_match(device_t parent, cfdata_t cf, void *aux)
  87 {
  88         struct sbdio_attach_args *sa = aux;
  89
  90         return strcmp(sa->sa_name, "lance") ? 0 : 1;
  91 }
  92
  93 void
  94 le_sbdio_attach(device_t parent, device_t self, void *aux)
  95 {
  96         struct le_sbdio_softc *lesc = device_private(self);
  97         struct sbdio_attach_args *sa = aux;
  98         struct lance_softc *sc = &lesc->sc_am7990.lsc;
  99         bus_dma_segment_t seg;
 100         int rseg;
 101
 102         sc->sc_dev = self;
 103         lesc->sc_dmat = sa->sa_dmat;
 104         lesc->sc_bst  = sa->sa_bust;
 105
 106         if (bus_space_map(lesc->sc_bst, sa->sa_addr1, 8 /* XXX */,
 107             BUS_SPACE_MAP_LINEAR, &lesc->sc_bsh) != 0) {
 108                 aprint_error(": cannot map registers\n");
 109                 return;
 110         }
 111
 112         /* Allocate DMA memory for the chip. */
 113         if (bus_dmamem_alloc(lesc->sc_dmat, LE_MEMSIZE, 0, 0, &seg, 1, &rseg,
 114             BUS_DMA_NOWAIT) != 0) {
 115                 aprint_error(": can't allocate DMA memory\n");
 116                 return;
 117         }
 118         if (bus_dmamem_map(lesc->sc_dmat, &seg, rseg, LE_MEMSIZE,
 119             (void **)&sc->sc_mem, BUS_DMA_NOWAIT|BUS_DMA_COHERENT) != 0) {
 120                 aprint_error(": can't map DMA memory\n");
 121                 return;
 122         }
 123         if (bus_dmamap_create(lesc->sc_dmat, LE_MEMSIZE, 1, LE_MEMSIZE,
 124             0, BUS_DMA_NOWAIT, &lesc->sc_dmamap) != 0) {
 125                 aprint_error(": can't create DMA map\n");
 126                 return;
 127         }
 128         if (bus_dmamap_load(lesc->sc_dmat, lesc->sc_dmamap, sc->sc_mem,
 129             LE_MEMSIZE, NULL, BUS_DMA_NOWAIT) != 0) {
 130                 aprint_error(": can't load DMA map\n");
 131                 return;
 132         }
 133
 134         sc->sc_memsize = LE_MEMSIZE;
 135         sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr;
 136         sc->sc_conf3 = LE_C3_BSWP | LE_C3_BCON;
 137         (*platform.ether_addr)(sc->sc_enaddr);
 138
 139         sc->sc_copytodesc = lance_copytobuf_contig;
 140         sc->sc_copyfromdesc = lance_copyfrombuf_contig;
 141         sc->sc_copytobuf = lance_copytobuf_contig;
 142         sc->sc_copyfrombuf = lance_copyfrombuf_contig;
 143         sc->sc_zerobuf = lance_zerobuf_contig;
 144 #ifdef LEDEBUG
 145         sc->sc_debug = 0xff;
 146 #endif
 147         sc->sc_rdcsr = le_sbdio_rdcsr;
 148         sc->sc_wrcsr = le_sbdio_wrcsr;
 149
 150         am7990_config(&lesc->sc_am7990);
 151         intr_establish(sa->sa_irq, am7990_intr, sc);
 152 }
 153
 154 static void
 155 le_sbdio_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
 156 {
 157         struct le_sbdio_softc *lesc = (struct le_sbdio_softc *)sc;
 158
 159         bus_space_write_2(lesc->sc_bst, lesc->sc_bsh, LEREG1_RAP, port);
 160         bus_space_write_2(lesc->sc_bst, lesc->sc_bsh, LEREG1_RDP, val);
 161 }
 162
 163 static uint16_t
 164 le_sbdio_rdcsr(struct lance_softc *sc, uint16_t port)
 165 {
 166         struct le_sbdio_softc *lesc = (struct le_sbdio_softc *)sc;
 167
 168         bus_space_write_2(lesc->sc_bst, lesc->sc_bsh, LEREG1_RAP, port);
 169         return bus_space_read_2(lesc->sc_bst, lesc->sc_bsh, LEREG1_RDP);
 170 }