sys/dev/isa/if_sm_isa.c

   1 /*      $NetBSD: if_sm_isa.c,v 1.21 2009/05/12 08:44:19 cegger 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 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: if_sm_isa.c,v 1.21 2009/05/12 08:44:19 cegger Exp $");
  35
  36 #include <sys/param.h>
  37 #include <sys/systm.h>
  38 #include <sys/mbuf.h>
  39 #include <sys/socket.h>
  40 #include <sys/ioctl.h>
  41 #include <sys/errno.h>
  42 #include <sys/syslog.h>
  43 #include <sys/select.h>
  44 #include <sys/device.h>
  45
  46 #include <net/if.h>
  47 #include <net/if_dl.h>
  48 #include <net/if_ether.h>
  49 #include <net/if_media.h>
  50
  51 #include <sys/intr.h>
  52 #include <sys/bus.h>
  53
  54 #include <dev/mii/mii.h>
  55 #include <dev/mii/miivar.h>
  56
  57 #include <dev/ic/smc91cxxreg.h>
  58 #include <dev/ic/smc91cxxvar.h>
  59
  60 #include <dev/isa/isavar.h>
  61
  62 int     sm_isa_match(device_t, cfdata_t, void *);
  63 void    sm_isa_attach(device_t, device_t, void *);
  64
  65 struct sm_isa_softc {
  66         struct  smc91cxx_softc sc_smc;          /* real "smc" softc */
  67
  68         /* ISA-specific goo. */
  69         void    *sc_ih;                         /* interrupt cookie */
  70 };
  71
  72 CFATTACH_DECL(sm_isa, sizeof(struct sm_isa_softc),
  73     sm_isa_match, sm_isa_attach, NULL, NULL);
  74
  75 int
  76 sm_isa_match(device_t parent, cfdata_t match, void *aux)
  77 {
  78         struct isa_attach_args *ia = aux;
  79         bus_space_tag_t iot = ia->ia_iot;
  80         bus_space_handle_t ioh;
  81         u_int16_t tmp;
  82         int rv = 0;
  83         extern const char *smc91cxx_idstrs[];
  84
  85         if (ia->ia_nio < 1)
  86                 return (0);
  87         if (ia->ia_nirq < 1)
  88                 return (0);
  89
  90         if (ISA_DIRECT_CONFIG(ia))
  91                 return (0);
  92
  93         /* Disallow wildcarded values. */
  94         if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
  95                 return (0);
  96         if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
  97                 return (0);
  98
  99         /* Map i/o space. */
 100         if (bus_space_map(iot, ia->ia_io[0].ir_addr, SMC_IOSIZE, 0, &ioh))
 101                 return (0);
 102
 103         /* Check that high byte of BANK_SELECT is what we expect. */
 104         tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
 105         if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE)
 106                 goto out;
 107
 108         /*
 109          * Switch to bank 0 and perform the test again.
 110          * XXX INVASIVE!
 111          */
 112         bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 0);
 113         tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
 114         if ((tmp & BSR_DETECT_MASK) != BSR_DETECT_VALUE)
 115                 goto out;
 116
 117         /*
 118          * Switch to bank 1 and check the base address register.
 119          * XXX INVASIVE!
 120          */
 121         bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 1);
 122         tmp = bus_space_read_2(iot, ioh, BASE_ADDR_REG_W);
 123         if (ia->ia_io[0].ir_addr != ((tmp >> 3) & 0x3e0))
 124                 goto out;
 125
 126         /*
 127          * Check for a recognized chip id.
 128          * XXX INVASIVE!
 129          */
 130         bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 3);
 131         tmp = bus_space_read_2(iot, ioh, REVISION_REG_W);
 132         if (smc91cxx_idstrs[RR_ID(tmp)] == NULL)
 133                 goto out;
 134
 135         /*
 136          * Assume we have an SMC91Cxx.
 137          */
 138         ia->ia_nio = 1;
 139         ia->ia_io[0].ir_size = SMC_IOSIZE;
 140
 141         ia->ia_nirq = 1;
 142
 143         ia->ia_niomem = 0;
 144         ia->ia_ndrq = 0;
 145
 146         rv = 1;
 147
 148  out:
 149         bus_space_unmap(iot, ioh, SMC_IOSIZE);
 150         return (rv);
 151 }
 152
 153 void
 154 sm_isa_attach(device_t parent, device_t self, void *aux)
 155 {
 156         struct sm_isa_softc *isc = (struct sm_isa_softc *)self;
 157         struct smc91cxx_softc *sc = &isc->sc_smc;
 158         struct isa_attach_args *ia = aux;
 159         bus_space_tag_t iot = ia->ia_iot;
 160         bus_space_handle_t ioh;
 161
 162         printf("\n");
 163
 164         /* Map i/o space. */
 165         if (bus_space_map(iot, ia->ia_io[0].ir_addr, SMC_IOSIZE, 0, &ioh))
 166                 panic("sm_isa_attach: can't map i/o space");
 167
 168         sc->sc_bst = iot;
 169         sc->sc_bsh = ioh;
 170
 171         /* should always be enabled */
 172         sc->sc_flags |= SMC_FLAGS_ENABLED;
 173
 174         /* XXX Should get Ethernet address from EEPROM!! */
 175
 176         /* Perform generic intialization. */
 177         smc91cxx_attach(sc, NULL);
 178
 179         /* Establish the interrupt handler. */
 180         isc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
 181             IST_EDGE, IPL_NET, smc91cxx_intr, sc);
 182         if (isc->sc_ih == NULL)
 183                 aprint_error_dev(&sc->sc_dev, "couldn't establish interrupt handler\n");
 184 }