sys/dev/isapnp/if_le_isapnp.c

   1 /*      $NetBSD: if_le_isapnp.c,v 1.33 2008/04/04 12:25:07 tsutsui Exp $        */
   2
   3 /*-
   4  * Copyright (c) 1997 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
   9  * NASA Ames Research Center.
  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 /*
  34  * Copyright (c) 1997 Jonathan Stone <jonathan@NetBSD.org> and
  35  * Matthias Drochner. All rights reserved.
  36  *
  37  * Redistribution and use in source and binary forms, with or without
  38  * modification, are permitted provided that the following conditions
  39  * are met:
  40  * 1. Redistributions of source code must retain the above copyright
  41  *    notice, this list of conditions and the following disclaimer.
  42  * 2. Redistributions in binary form must reproduce the above copyright
  43  *    notice, this list of conditions and the following disclaimer in the
  44  *    documentation and/or other materials provided with the distribution.
  45  * 3. All advertising materials mentioning features or use of this software
  46  *    must display the following acknowledgement:
  47  *      This product includes software developed by Jonathan Stone.
  48  * 4. The name of the author may not be used to endorse or promote products
  49  *    derived from this software without specific prior written permission.
  50  *
  51  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  52  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  53  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  54  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  55  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  56  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  57  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  58  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  59  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  60  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  61  */
  62
  63 #include <sys/cdefs.h>
  64 __KERNEL_RCSID(0, "$NetBSD: if_le_isapnp.c,v 1.33 2008/04/04 12:25:07 tsutsui Exp $");
  65
  66 #include <sys/param.h>
  67 #include <sys/systm.h>
  68 #include <sys/mbuf.h>
  69 #include <sys/socket.h>
  70 #include <sys/ioctl.h>
  71 #include <sys/errno.h>
  72 #include <sys/syslog.h>
  73 #include <sys/select.h>
  74 #include <sys/device.h>
  75
  76 #include <uvm/uvm_extern.h>
  77
  78 #include <net/if.h>
  79 #include <net/if_dl.h>
  80 #include <net/if_ether.h>
  81 #include <net/if_media.h>
  82
  83 #include <sys/cpu.h>
  84 #include <sys/bus.h>
  85 #include <sys/intr.h>
  86
  87 #include <dev/isa/isavar.h>
  88 #include <dev/isa/isadmavar.h>
  89
  90 #include <dev/isapnp/isapnpreg.h>
  91 #include <dev/isapnp/isapnpvar.h>
  92 #include <dev/isapnp/isapnpdevs.h>
  93
  94 #include <dev/ic/lancereg.h>
  95 #include <dev/ic/lancevar.h>
  96 #include <dev/ic/am7990reg.h>
  97 #include <dev/ic/am7990var.h>
  98
  99 #define LE_ISAPNP_MEMSIZE       16384
 100
 101 #define PCNET_SAPROM    0x00
 102 #define PCNET_RDP       0x10
 103 #define PCNET_RAP       0x12
 104
 105 /*
 106  * Ethernet software status per interface.
 107  *
 108  * Each interface is referenced by a network interface structure,
 109  * ethercom.ec_if, which the routing code uses to locate the interface.
 110  * This structure contains the output queue for the interface, its address, ...
 111  */
 112 struct le_isapnp_softc {
 113         struct  am7990_softc sc_am7990; /* glue to MI code */
 114
 115         void    *sc_ih;
 116         bus_space_tag_t sc_iot;         /* space cookie */
 117         bus_space_handle_t sc_ioh;      /* bus space handle */
 118         bus_dma_tag_t   sc_dmat;        /* bus dma tag */
 119         bus_dmamap_t    sc_dmam;        /* bus dma map */
 120         int     sc_rap, sc_rdp;         /* offsets to LANCE registers */
 121 };
 122
 123 int le_isapnp_match(device_t, cfdata_t, void *);
 124 void le_isapnp_attach(device_t, device_t, void *);
 125
 126 CFATTACH_DECL_NEW(le_isapnp, sizeof(struct le_isapnp_softc),
 127     le_isapnp_match, le_isapnp_attach, NULL, NULL);
 128
 129 int     le_isapnp_intredge(void *);
 130 static void le_isapnp_wrcsr(struct lance_softc *, uint16_t, uint16_t);
 131 static uint16_t le_isapnp_rdcsr(struct lance_softc *, uint16_t);
 132
 133 static void
 134 le_isapnp_wrcsr(struct lance_softc *sc, uint16_t port, uint16_t val)
 135 {
 136         struct le_isapnp_softc *lesc = (struct le_isapnp_softc *)sc;
 137         bus_space_tag_t iot = lesc->sc_iot;
 138         bus_space_handle_t ioh = lesc->sc_ioh;
 139
 140         bus_space_write_2(iot, ioh, lesc->sc_rap, port);
 141         bus_space_write_2(iot, ioh, lesc->sc_rdp, val);
 142 }
 143
 144 static uint16_t
 145 le_isapnp_rdcsr(struct lance_softc *sc, uint16_t port)
 146 {
 147         struct le_isapnp_softc *lesc = (struct le_isapnp_softc *)sc;
 148         bus_space_tag_t iot = lesc->sc_iot;
 149         bus_space_handle_t ioh = lesc->sc_ioh;
 150         uint16_t val;
 151
 152         bus_space_write_2(iot, ioh, lesc->sc_rap, port);
 153         val = bus_space_read_2(iot, ioh, lesc->sc_rdp);
 154         return (val);
 155 }
 156
 157 int
 158 le_isapnp_match(device_t parent, cfdata_t cf, void *aux)
 159 {
 160         int pri, variant;
 161
 162         pri = isapnp_devmatch(aux, &isapnp_le_devinfo, &variant);
 163         if (pri && variant > 0)
 164                 pri = 0;
 165         return (pri);
 166 }
 167
 168 void
 169 le_isapnp_attach(device_t parent, device_t self, void *aux)
 170 {
 171         struct le_isapnp_softc *lesc = device_private(self);
 172         struct lance_softc *sc = &lesc->sc_am7990.lsc;
 173         struct isapnp_attach_args *ipa = aux;
 174         bus_space_tag_t iot;
 175         bus_space_handle_t ioh;
 176         bus_dma_tag_t dmat;
 177         bus_dma_segment_t seg;
 178         int i, rseg, error;
 179
 180         sc->sc_dev = self;
 181
 182         if (isapnp_config(ipa->ipa_iot, ipa->ipa_memt, ipa)) {
 183                 aprint_error(": error in region allocation\n");
 184                 return;
 185         }
 186
 187         lesc->sc_iot = iot = ipa->ipa_iot;
 188         lesc->sc_ioh = ioh = ipa->ipa_io[0].h;
 189         lesc->sc_dmat = dmat = ipa->ipa_dmat;
 190
 191         lesc->sc_rap = PCNET_RAP;
 192         lesc->sc_rdp = PCNET_RDP;
 193
 194         /*
 195          * Extract the physical MAC address from the ROM.
 196          */
 197         for (i = 0; i < sizeof(sc->sc_enaddr); i++)
 198                 sc->sc_enaddr[i] = bus_space_read_1(iot, ioh, PCNET_SAPROM + i);
 199
 200         /*
 201          * Allocate a DMA area for the card.
 202          */
 203         if (bus_dmamem_alloc(dmat, LE_ISAPNP_MEMSIZE, PAGE_SIZE, 0, &seg, 1,
 204             &rseg, BUS_DMA_NOWAIT)) {
 205                 aprint_error(": couldn't allocate memory for card\n");
 206                 return;
 207         }
 208         if (bus_dmamem_map(dmat, &seg, rseg, LE_ISAPNP_MEMSIZE,
 209             (void **)&sc->sc_mem, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
 210                 aprint_error(": couldn't map memory for card\n");
 211                 return;
 212         }
 213
 214         /*
 215          * Create and load the DMA map for the DMA area.
 216          */
 217         if (bus_dmamap_create(dmat, LE_ISAPNP_MEMSIZE, 1,
 218             LE_ISAPNP_MEMSIZE, 0, BUS_DMA_NOWAIT, &lesc->sc_dmam)) {
 219                 aprint_error(": couldn't create DMA map\n");
 220                 bus_dmamem_free(dmat, &seg, rseg);
 221                 return;
 222         }
 223         if (bus_dmamap_load(dmat, lesc->sc_dmam,
 224             sc->sc_mem, LE_ISAPNP_MEMSIZE, NULL, BUS_DMA_NOWAIT)) {
 225                 aprint_error(": coundn't load DMA map\n");
 226                 bus_dmamem_free(dmat, &seg, rseg);
 227                 return;
 228         }
 229
 230         sc->sc_conf3 = 0;
 231         sc->sc_addr = lesc->sc_dmam->dm_segs[0].ds_addr;
 232         sc->sc_memsize = LE_ISAPNP_MEMSIZE;
 233
 234         sc->sc_copytodesc = lance_copytobuf_contig;
 235         sc->sc_copyfromdesc = lance_copyfrombuf_contig;
 236         sc->sc_copytobuf = lance_copytobuf_contig;
 237         sc->sc_copyfrombuf = lance_copyfrombuf_contig;
 238         sc->sc_zerobuf = lance_zerobuf_contig;
 239
 240         sc->sc_rdcsr = le_isapnp_rdcsr;
 241         sc->sc_wrcsr = le_isapnp_wrcsr;
 242         sc->sc_hwinit = NULL;
 243
 244         if (ipa->ipa_ndrq > 0) {
 245                 if ((error = isa_dmacascade(ipa->ipa_ic,
 246                     ipa->ipa_drq[0].num)) != 0) {
 247                         aprint_error(": unable to cascade DRQ, error = %d\n",
 248                             error);
 249                         return;
 250                 }
 251         }
 252
 253         lesc->sc_ih = isa_intr_establish(ipa->ipa_ic, ipa->ipa_irq[0].num,
 254             ipa->ipa_irq[0].type, IPL_NET, le_isapnp_intredge, sc);
 255
 256         aprint_normal(": %s %s\n", ipa->ipa_devident, ipa->ipa_devclass);
 257
 258         aprint_normal("%s", device_xname(self));
 259         am7990_config(&lesc->sc_am7990);
 260 }
 261
 262
 263 /*
 264  * Controller interrupt.
 265  */
 266 int
 267 le_isapnp_intredge(void *arg)
 268 {
 269
 270         if (am7990_intr(arg) == 0)
 271                 return (0);
 272         for (;;)
 273                 if (am7990_intr(arg) == 0)
 274                         return (1);
 275 }