sys/arch/macppc/dev/com_mainbus.c

   1 /*
   2  * Copyright 2006 Kyma Systems LLC.
   3  * All rights reserved.
   4  *
   5  * Written by Sanjay Lal <sanjayl@kymasys.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed for the NetBSD Project by
  18  *      Kyma Systems LLC.
  19  * 4. The name of Kyma Systems LLC may not be used to endorse
  20  *    or promote products derived from this software without specific prior
  21  *    written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY KYMA SYSTEMS LLC ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  25  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  26  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL KYMA SYSTEMS LLC
  27  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  30  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  31  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  32  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  33  * POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 /* com device attachment to mainbus for MAMBO G5 simulator */
  37
  38 #include <sys/cdefs.h>
  39 #include <sys/param.h>
  40 #include <sys/systm.h>
  41 #include <sys/device.h>
  42 #include <sys/tty.h>
  43
  44 #include <machine/bus.h>
  45 #include <dev/ofw/openfirm.h>
  46
  47 #include <dev/ic/comreg.h>
  48 #include <dev/ic/comvar.h>
  49
  50 struct com_mainbus_softc
  51 {
  52     struct com_softc sc_com;    /* real "com" softc */
  53     void *sc_ih;                /* interrupt handler */
  54 };
  55
  56 int com_mainbus_probe(device_t, cfdata_t , void *);
  57 void com_mainbus_attach(device_t, device_t, void *);
  58
  59 CFATTACH_DECL_NEW(com_mainbus, sizeof(struct com_mainbus_softc),
  60               com_mainbus_probe, com_mainbus_attach, NULL, NULL);
  61
  62 int com_mainbus_attached = 0;
  63 int
  64 com_mainbus_probe(device_t parent, cfdata_t match, void *aux)
  65 {
  66     struct confargs *ca = aux;
  67
  68     if (strcmp(ca->ca_name, "com") != 0)
  69         return 0;
  70
  71     if (!com_mainbus_attached) {
  72         com_mainbus_attached = 1;
  73         return (1);
  74     }
  75     else
  76         return 0;
  77 }
  78
  79 void
  80 com_mainbus_attach(device_t parent, device_t self, void *aux)
  81 {
  82     struct com_mainbus_softc *msc = device_private(self);
  83     struct com_softc *sc = &msc->sc_com;
  84     int serial, interrupt_length;
  85     int interrupts[8];
  86     bus_space_tag_t iot;
  87     bus_space_handle_t ioh;
  88     bus_addr_t iobase;
  89
  90     sc->sc_dev = self;
  91
  92     serial = OF_finddevice("/ht@0/isa@4/serial@0x3f8");
  93     if (serial != -1) {
  94         interrupt_length =
  95             OF_getprop(serial, "interrupts", interrupts, sizeof(interrupts));
  96     }
  97
  98
  99     iot = (bus_space_tag_t)0xf4000000;
 100     iobase = 0x3f8;
 101     comcnattach(iot, iobase, 9600, 1843200, COM_TYPE_NORMAL, (CREAD | CS8));
 102     bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh);
 103     COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase);
 104
 105     sc->sc_frequency = 1843200;
 106
 107     com_attach_subr(sc);
 108 #if 1
 109     msc->sc_ih =
 110         intr_establish(interrupts[0], IST_LEVEL, IPL_SERIAL, comintr, sc);
 111
 112     if (msc->sc_ih == NULL)
 113         panic("failed to establish int handler");
 114 #endif
 115
 116
 117 }