sys/arch/sparc/dev/if_le_obio.c

   1 /*      $NetBSD: if_le_obio.c,v 1.25 2008/04/04 12:25:06 tsutsui Exp $  */
   2
   3 /*-
   4  * Copyright (c) 1997, 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Charles M. Hannum; Jason R. Thorpe of the Numerical Aerospace
   9  * Simulation Facility, NASA Ames Research Center; Paul Kranenburg.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  21  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  22  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  30  * POSSIBILITY OF SUCH DAMAGE.
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: if_le_obio.c,v 1.25 2008/04/04 12:25:06 tsutsui Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/device.h>
  39
  40 #include <uvm/uvm_extern.h>
  41
  42 #include <net/if.h>
  43 #include <net/if_ether.h>
  44 #include <net/if_media.h>
  45
  46 #include <machine/bus.h>
  47 #include <machine/intr.h>
  48 #include <machine/autoconf.h>
  49
  50 #include <dev/ic/lancereg.h>
  51 #include <dev/ic/lancevar.h>
  52 #include <dev/ic/am7990reg.h>
  53 #include <dev/ic/am7990var.h>
  54
  55 /*
  56  * LANCE registers.
  57  */
  58 #define LEREG1_RDP      0       /* Register Data port */
  59 #define LEREG1_RAP      2       /* Register Address port */
  60
  61 struct  le_softc {
  62         struct  am7990_softc    sc_am7990;      /* glue to MI code */
  63         bus_space_tag_t         sc_bustag;
  64         bus_dma_tag_t           sc_dmatag;
  65         bus_dmamap_t            sc_dmamap;
  66         bus_space_handle_t      sc_reg;         /* LANCE registers */
  67 };
  68
  69 #define MEMSIZE 0x4000          /* LANCE memory size */
  70
  71 /*
  72  * Media types supported.
  73  */
  74 static int lemedia[] = {
  75         IFM_ETHER|IFM_10_T,
  76 };
  77 #define NLEMEDIA        (sizeof(lemedia) / sizeof(lemedia[0]))
  78
  79 static int      lematch_obio(device_t, cfdata_t, void *);
  80 static void     leattach_obio(device_t, device_t, void *);
  81
  82 CFATTACH_DECL_NEW(le_obio, sizeof(struct le_softc),
  83     lematch_obio, leattach_obio, NULL, NULL);
  84
  85
  86 static void lewrcsr(struct lance_softc *, uint16_t, uint16_t);
  87 static uint16_t lerdcsr(struct lance_softc *, uint16_t);
  88
  89 static void
  90 lewrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
  91 {
  92         struct le_softc *lesc = (struct le_softc *)sc;
  93         bus_space_tag_t t = lesc->sc_bustag;
  94         bus_space_handle_t h = lesc->sc_reg;
  95
  96         bus_space_write_2(t, h, LEREG1_RAP, port);
  97         bus_space_write_2(t, h, LEREG1_RDP, val);
  98 }
  99
 100 static uint16_t
 101 lerdcsr(struct lance_softc *sc, uint16_t port)
 102 {
 103         struct le_softc *lesc = (struct le_softc *)sc;
 104         bus_space_tag_t t = lesc->sc_bustag;
 105         bus_space_handle_t h = lesc->sc_reg;
 106
 107         bus_space_write_2(t, h, LEREG1_RAP, port);
 108         return (bus_space_read_2(t, h, LEREG1_RDP));
 109 }
 110
 111 static int
 112 lematch_obio(device_t parent, cfdata_t cf, void *aux)
 113 {
 114         union obio_attach_args *uoba = aux;
 115         struct obio4_attach_args *oba;
 116
 117         if (uoba->uoba_isobio4 == 0)
 118                 return (0);
 119
 120         oba = &uoba->uoba_oba4;
 121         return (bus_space_probe(oba->oba_bustag, oba->oba_paddr,
 122                                 2,      /* probe size */
 123                                 0,      /* offset */
 124                                 0,      /* flags */
 125                                 NULL, NULL));
 126 }
 127
 128 static void
 129 leattach_obio(device_t parent, device_t self, void *aux)
 130 {
 131         union obio_attach_args *uoba = aux;
 132         struct obio4_attach_args *oba = &uoba->uoba_oba4;
 133         struct le_softc *lesc = device_private(self);
 134         struct lance_softc *sc = &lesc->sc_am7990.lsc;
 135         bus_dma_segment_t seg;
 136         bus_dma_tag_t dmatag;
 137         int rseg;
 138         int error;
 139
 140         sc->sc_dev = self;
 141         lesc->sc_bustag = oba->oba_bustag;
 142         lesc->sc_dmatag = dmatag = oba->oba_dmatag;
 143
 144         if (bus_space_map(oba->oba_bustag, oba->oba_paddr,
 145                           2 * sizeof(uint16_t),
 146                           0, &lesc->sc_reg) != 0) {
 147                 aprint_error(": cannot map registers\n");
 148                 return;
 149         }
 150
 151         /* Get a DMA handle */
 152         if ((error = bus_dmamap_create(dmatag, MEMSIZE, 1, MEMSIZE, 0,
 153                                         BUS_DMA_NOWAIT|BUS_DMA_24BIT,
 154                                         &lesc->sc_dmamap)) != 0) {
 155                 aprint_error(": DMA map create error %d\n", error);
 156                 return;
 157         }
 158
 159         /* Allocate DMA buffer */
 160         if ((error = bus_dmamem_alloc(dmatag, MEMSIZE, PAGE_SIZE, 0,
 161                              &seg, 1, &rseg,
 162                              BUS_DMA_NOWAIT | BUS_DMA_24BIT)) != 0) {
 163                 aprint_error(": DMA memory allocation error %d\n", error);
 164                 return;
 165         }
 166         /* Map DMA buffer into kernel space */
 167         if ((error = bus_dmamem_map(dmatag, &seg, rseg, MEMSIZE,
 168                            (void **)&sc->sc_mem,
 169                            BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) != 0) {
 170                 aprint_error(": DMA memory map error %d\n", error);
 171                 bus_dmamem_free(lesc->sc_dmatag, &seg, rseg);
 172                 return;
 173         }
 174         /* Load DMA buffer */
 175         if ((error = bus_dmamap_load(dmatag, lesc->sc_dmamap,
 176                                      sc->sc_mem, MEMSIZE, NULL,
 177                                      BUS_DMA_NOWAIT)) != 0) {
 178                 aprint_error(": DMA buffer map load error %d\n", error);
 179                 bus_dmamem_unmap(dmatag, (void *)sc->sc_mem, MEMSIZE);
 180                 bus_dmamem_free(dmatag, &seg, rseg);
 181                 return;
 182         }
 183
 184         sc->sc_addr = lesc->sc_dmamap->dm_segs[0].ds_addr & 0xffffff;
 185         sc->sc_memsize = MEMSIZE;
 186         sc->sc_conf3 = LE_C3_BSWP | LE_C3_ACON | LE_C3_BCON;
 187
 188         sc->sc_supmedia = lemedia;
 189         sc->sc_nsupmedia = NLEMEDIA;
 190         sc->sc_defaultmedia = lemedia[0];
 191
 192         prom_getether(0, sc->sc_enaddr);
 193
 194         sc->sc_copytodesc = lance_copytobuf_contig;
 195         sc->sc_copyfromdesc = lance_copyfrombuf_contig;
 196         sc->sc_copytobuf = lance_copytobuf_contig;
 197         sc->sc_copyfrombuf = lance_copyfrombuf_contig;
 198         sc->sc_zerobuf = lance_zerobuf_contig;
 199
 200         sc->sc_rdcsr = lerdcsr;
 201         sc->sc_wrcsr = lewrcsr;
 202
 203         am7990_config(&lesc->sc_am7990);
 204
 205         /* Install interrupt */
 206         (void)bus_intr_establish(lesc->sc_bustag, oba->oba_pri, IPL_NET,
 207                                  am7990_intr, sc);
 208 }