sys/arch/sun3/dev/if_ie_obio.c

   1 /*      $NetBSD: if_ie_obio.c,v 1.24 2008/04/28 20:23:37 martin Exp $   */
   2
   3 /*-
   4  * Copyright (c) 1996 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by 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 /*
  33  * Machine-dependent glue for the Intel Ethernet (ie) driver.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __KERNEL_RCSID(0, "$NetBSD: if_ie_obio.c,v 1.24 2008/04/28 20:23:37 martin Exp $");
  38
  39 #include "opt_inet.h"
  40
  41 #include <sys/param.h>
  42 #include <sys/systm.h>
  43 #include <sys/device.h>
  44 #include <sys/protosw.h>
  45 #include <sys/socket.h>
  46 #include <net/if.h>
  47 #include <net/if_ether.h>
  48
  49 #ifdef INET
  50 #include <netinet/in.h>
  51 #include <netinet/in_systm.h>
  52 #include <netinet/in_var.h>
  53 #include <netinet/ip.h>
  54 #include <netinet/if_inarp.h>
  55 #endif
  56
  57 #include <machine/autoconf.h>
  58 #include <machine/cpu.h>
  59 #include <machine/dvma.h>
  60 #include <machine/idprom.h>
  61 #include <machine/vmparam.h>
  62
  63 #include "i82586.h"
  64 #include "if_iereg.h"
  65 #include "if_ievar.h"
  66
  67 static void ie_obreset(struct ie_softc *);
  68 static void ie_obattend(struct ie_softc *);
  69 static void ie_obrun(struct ie_softc *);
  70
  71 /*
  72  * New-style autoconfig attachment
  73  */
  74
  75 static int  ie_obio_match(device_t, cfdata_t, void *);
  76 static void ie_obio_attach(device_t, device_t, void *);
  77
  78 CFATTACH_DECL_NEW(ie_obio, sizeof(struct ie_softc),
  79     ie_obio_match, ie_obio_attach, NULL, NULL);
  80
  81 static int
  82 ie_obio_match(device_t parent, cfdata_t cf, void *args)
  83 {
  84         struct confargs *ca = args;
  85
  86         /* Make sure there is something there... */
  87         if (bus_peek(ca->ca_bustype, ca->ca_paddr, 1) == -1)
  88                 return 0;
  89
  90         /* Default interrupt priority. */
  91         if (ca->ca_intpri == -1)
  92                 ca->ca_intpri = 3;
  93
  94         return 1;
  95 }
  96
  97 void
  98 ie_obio_attach(device_t parent, device_t self, void *args)
  99 {
 100         struct ie_softc *sc = device_private(self);
 101         struct confargs *ca = args;
 102
 103         sc->sc_dev = self;
 104         sc->hard_type = IE_OBIO;
 105         sc->reset_586 = ie_obreset;
 106         sc->chan_attn = ie_obattend;
 107         sc->run_586 = ie_obrun;
 108         sc->sc_memcpy = memcpy;
 109         sc->sc_memset = memset;
 110
 111         /* Map in the control registers. */
 112         sc->sc_reg = bus_mapin(ca->ca_bustype,
 113             ca->ca_paddr, sizeof(struct ieob));
 114
 115         /*
 116          * The on-board "ie" is wired-up such that its
 117          * memory access goes to the high 16 megabytes
 118          * of the on-board memory space (on-board DVMA).
 119          */
 120         sc->sc_iobase = (void *)DVMA_OBIO_SLAVE_BASE;
 121
 122         /*
 123          * The on-board "ie" just uses main memory, so
 124          * we can choose how much memory to give it.
 125          * XXX: Would like to use less than 64K...
 126          */
 127         sc->sc_msize = 0x8000; /* MEMSIZE 32K */
 128
 129         /* Allocate "shared" memory (in DVMA space). */
 130         sc->sc_maddr = dvma_malloc(sc->sc_msize);
 131         if (sc->sc_maddr == NULL)
 132                 panic(": not enough dvma space");
 133
 134         /*
 135          * Set the System Configuration Pointer (SCP).
 136          * Its location is system-dependent because the
 137          * i82586 reads it from a fixed physical address.
 138          * On this hardware, the i82586 address maps to
 139          * a 24-bit offset in on-board DVMA space. The
 140          * SCP happens to fall in a page used by the
 141          * PROM monitor, which the PROM knows about.
 142          */
 143         sc->scp = (volatile void *)((char *)sc->sc_iobase + IE_SCP_ADDR);
 144
 145         /*
 146          * The rest of ram is used for buffers.
 147          */
 148         sc->buf_area    = sc->sc_maddr;
 149         sc->buf_area_sz = sc->sc_msize;
 150
 151         /* Install interrupt handler. */
 152         isr_add_autovect(ie_intr, sc, ca->ca_intpri);
 153
 154         /* Set the ethernet address. */
 155         idprom_etheraddr(sc->sc_addr);
 156
 157         /* Do machine-independent parts of attach. */
 158         ie_attach(sc);
 159 }
 160
 161
 162 /*
 163  * onboard ie support
 164  */
 165
 166 /* Whack the "channel attetion" line. */
 167 void
 168 ie_obattend(struct ie_softc *sc)
 169 {
 170         volatile struct ieob *ieo = (struct ieob *)sc->sc_reg;
 171
 172         ieo->obctrl |= IEOB_ATTEN;      /* flag! */
 173         ieo->obctrl &= ~IEOB_ATTEN;     /* down. */
 174 }
 175
 176 /*
 177  * This is called during driver attach.
 178  * Reset and initialize.
 179  */
 180 void
 181 ie_obreset(struct ie_softc *sc)
 182 {
 183         volatile struct ieob *ieo = (struct ieob *)sc->sc_reg;
 184         ieo->obctrl = 0;
 185         delay(20);
 186         ieo->obctrl = (IEOB_NORSET | IEOB_ONAIR | IEOB_IENAB);
 187 }
 188
 189 /*
 190  * This is called at the end of ieinit().
 191  * optional.
 192  */
 193 void
 194 ie_obrun(struct ie_softc *sc)
 195 {
 196
 197         /* do it all in reset */
 198 }