sys/arch/hpcmips/vr/com_vrip.c

   1 /*      $NetBSD: com_vrip.c,v 1.20 2008/03/14 15:09:10 cube Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1999 SASAKI Takesi. All rights reserved.
   5  * Copyright (c) 1999, 2002 PocketBSD Project. All rights reserved.
   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 by the PocketBSD project
  18  *      and its contributors.
  19  * 4. Neither the name of the project nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  */
  36
  37 #include <sys/cdefs.h>
  38 __KERNEL_RCSID(0, "$NetBSD: com_vrip.c,v 1.20 2008/03/14 15:09:10 cube Exp $");
  39
  40 #include "opt_kgdb.h"
  41
  42 #include <sys/param.h>
  43 #include <sys/systm.h>
  44 #include <sys/device.h>
  45 #include <sys/reboot.h>
  46
  47 #include <sys/termios.h>
  48
  49 #include <machine/intr.h>
  50 #include <machine/bus.h>
  51
  52 #include <machine/platid.h>
  53 #include <machine/platid_mask.h>
  54 #include <machine/config_hook.h>
  55
  56 #include <hpcmips/vr/vr.h>
  57 #include <hpcmips/vr/vrcpudef.h>
  58 #include <hpcmips/vr/vripif.h>
  59 #include <hpcmips/vr/vripvar.h>
  60 #include <hpcmips/vr/cmureg.h>
  61 #include <hpcmips/vr/siureg.h>
  62
  63 #include <dev/ic/comvar.h>
  64 #include <dev/ic/comreg.h>
  65
  66 #include "opt_vr41xx.h"
  67 #include <hpcmips/vr/com_vripvar.h>
  68
  69 #include "locators.h"
  70
  71 #define COMVRIPDEBUG
  72 #ifdef COMVRIPDEBUG
  73 int     com_vrip_debug = 0;
  74 #define DPRINTF(arg) if (com_vrip_debug) printf arg;
  75 #define VPRINTF(arg) if (com_vrip_debug || bootverbose) printf arg;
  76 #else
  77 #define DPRINTF(arg)
  78 #define VPRINTF(arg) if (bootverbose) printf arg;
  79 #endif
  80
  81 struct com_vrip_softc {
  82         struct com_softc        sc_com;
  83         int sc_pwctl;
  84 };
  85
  86 static int com_vrip_probe(device_t, cfdata_t , void *);
  87 static void com_vrip_attach(device_t, device_t, void *);
  88 static int com_vrip_common_probe(bus_space_tag_t, int);
  89
  90 void vrcmu_init(void);
  91 void vrcmu_supply(int);
  92 void vrcmu_mask(int);
  93
  94 CFATTACH_DECL_NEW(com_vrip, sizeof(struct com_vrip_softc),
  95     com_vrip_probe, com_vrip_attach, NULL, NULL);
  96
  97 int
  98 com_vrip_cndb_attach(bus_space_tag_t iot, int iobase, int rate, int frequency,
  99     tcflag_t cflag, int kgdb)
 100 {
 101
 102         if (!com_vrip_common_probe(iot, iobase))
 103                 return (EIO);   /* I can't find appropriate error number. */
 104 #ifdef KGDB
 105         if (kgdb)
 106                 return (com_kgdb_attach(iot, iobase, rate, frequency,
 107                     COM_TYPE_NORMAL, cflag));
 108         else
 109 #endif
 110                 return (comcnattach(iot, iobase, rate, frequency,
 111                     COM_TYPE_NORMAL, cflag));
 112 }
 113
 114 static int
 115 com_vrip_common_probe(bus_space_tag_t iot, int iobase)
 116 {
 117         bus_space_handle_t ioh;
 118         int rv;
 119
 120         if (bus_space_map(iot, iobase, 1, 0, &ioh)) {
 121                 aprint_error(": can't map i/o space\n");
 122                 return 0;
 123         }
 124         rv = comprobe1(iot, ioh);
 125         bus_space_unmap(iot, ioh, 1);
 126         return (rv);
 127 }
 128
 129 static int
 130 com_vrip_probe(device_t parent, cfdata_t cf, void *aux)
 131 {
 132         struct vrip_attach_args *va = aux;
 133         bus_space_tag_t iot = va->va_iot;
 134         int rv;
 135
 136         DPRINTF(("==com_vrip_probe"));
 137
 138         if (va->va_addr == VRIPIFCF_ADDR_DEFAULT ||
 139             va->va_unit == VRIPIFCF_UNIT_DEFAULT) {
 140                 aprint_error(": need addr and intr.\n");
 141                 return (0);
 142         }
 143
 144         vrip_power(va->va_vc, va->va_unit, 1);
 145
 146         if (com_is_console(iot, va->va_addr, 0)) {
 147                 /*
 148                  *  We have alredy probed.
 149                  */
 150                 rv = 1;
 151         } else {
 152                 rv = com_vrip_common_probe(iot, va->va_addr);
 153         }
 154
 155         DPRINTF((rv ? ": found COM ports\n" : ": can't probe COM device\n"));
 156
 157         if (rv) {
 158                 va->va_size = COM_NPORTS;
 159         }
 160         return (rv);
 161 }
 162
 163
 164 static void
 165 com_vrip_attach(device_t parent, device_t self, void *aux)
 166 {
 167         struct com_vrip_softc *vsc = device_private(self);
 168         struct com_softc *sc = &vsc->sc_com;
 169         struct vrip_attach_args *va = aux;
 170
 171         bus_space_tag_t iot = va->va_iot;
 172         bus_space_handle_t ioh;
 173
 174         sc->sc_dev = self;
 175         vsc->sc_pwctl = device_cfdata(sc->sc_dev)->cf_loc[VRIPIFCF_PWCTL];
 176
 177         DPRINTF(("==com_vrip_attach"));
 178
 179         if (bus_space_map(iot, va->va_addr, 1, 0, &ioh)) {
 180                 aprint_error(": can't map bus space\n");
 181                 return;
 182         }
 183
 184         COM_INIT_REGS(sc->sc_regs, iot, ioh, va->va_addr);
 185
 186         sc->enable = NULL; /* XXX: CMU control */
 187         sc->disable = NULL;
 188
 189         sc->sc_frequency = VRCOM_FREQ;
 190         /* Power management */
 191         vrip_power(va->va_vc, va->va_unit, 1);
 192         /* XXX, locale 'ID' must be need */
 193         config_hook_call(CONFIG_HOOK_POWERCONTROL, vsc->sc_pwctl, (void*)1);
 194
 195         DPRINTF(("Try to attach com.\n"));
 196         com_attach_subr(sc);
 197
 198         DPRINTF(("Establish intr"));
 199         if (!vrip_intr_establish(va->va_vc, va->va_unit, 0, IPL_TTY,
 200             comintr, sc)) {
 201                 aprint_error_dev(self, "can't map interrupt line.\n");
 202         }
 203
 204         DPRINTF((":return()"));
 205         VPRINTF(("%s: pwctl %d\n", device_xname(self), vsc->sc_pwctl));
 206 }