sys/arch/sparc64/dev/com_ebus.c

   1 /*      $NetBSD: com_ebus.c,v 1.29 2009/11/14 03:43:52 nakayama Exp $   */
   2
   3 /*
   4  * Copyright (c) 1999, 2000 Matthew R. Green
   5  * 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  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 /*
  30  * NS Super I/O PC87332VLJ "com" to ebus attachment
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __KERNEL_RCSID(0, "$NetBSD: com_ebus.c,v 1.29 2009/11/14 03:43:52 nakayama Exp $");
  35
  36 #include <sys/types.h>
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/device.h>
  40 #include <sys/tty.h>
  41 #include <sys/conf.h>
  42
  43 #include <machine/bus.h>
  44 #include <machine/autoconf.h>
  45 #include <machine/openfirm.h>
  46
  47 #include <dev/ebus/ebusreg.h>
  48 #include <dev/ebus/ebusvar.h>
  49
  50 #include <dev/cons.h>
  51 #include <dev/ic/comvar.h>
  52 #include <dev/sun/kbd_ms_ttyvar.h>
  53
  54 #include "kbd.h"
  55 #include "ms.h"
  56
  57 int     com_ebus_match(device_t, cfdata_t , void *);
  58 void    com_ebus_attach(device_t, device_t, void *);
  59
  60 CFATTACH_DECL_NEW(com_ebus, sizeof(struct com_softc),
  61     com_ebus_match, com_ebus_attach, NULL, NULL);
  62
  63 static const char *com_names[] = {
  64         "su",
  65         "su_pnp",
  66         "rsc-console",
  67         NULL
  68 };
  69
  70 int
  71 com_ebus_match(device_t parent, cfdata_t match, void *aux)
  72 {
  73         struct ebus_attach_args *ea = aux;
  74         int i;
  75
  76         for (i = 0; com_names[i]; i++)
  77                 if (strcmp(ea->ea_name, com_names[i]) == 0)
  78                         return (1);
  79
  80         if (strcmp(ea->ea_name, "serial") == 0) {
  81                 char *compat;
  82
  83                 /* Could be anything. */
  84                 compat = prom_getpropstring(ea->ea_node, "compatible");
  85                 if (strcmp(compat, "su16550") == 0 ||
  86                     strcmp(compat, "su") == 0) {
  87                         return (1);
  88                 }
  89         }
  90         return (0);
  91 }
  92
  93 #define BAUD_BASE       (1846200)
  94
  95 void
  96 com_ebus_attach(device_t parent, device_t self, void *aux)
  97 {
  98         struct com_softc *sc = device_private(self);
  99         struct ebus_attach_args *ea = aux;
 100         struct kbd_ms_tty_attach_args kma;
 101 #if (NKBD > 0) || (NMS > 0)
 102         int maj;
 103         extern const struct cdevsw com_cdevsw;
 104 #endif
 105         int i;
 106         int com_is_input;
 107         int com_is_output;
 108         bus_space_handle_t ioh;
 109         bus_space_tag_t iot;
 110         bus_addr_t iobase;
 111
 112         sc->sc_dev = self;
 113         iot = ea->ea_bustag;
 114         iobase = EBUS_ADDR_FROM_REG(&ea->ea_reg[0]);
 115
 116         /*
 117          * Addresses that should be supplied by the prom:
 118          *      - normal com registers
 119          *      - ns873xx configuration registers
 120          *      - DMA space
 121          * The `com' driver does not use DMA accesses, so we can
 122          * ignore that for now.  We should enable the com port in
 123          * the ns873xx registers here. XXX
 124          *
 125          * Use the prom address if there.
 126          */
 127
 128         if (ea->ea_nvaddr)
 129                 sparc_promaddr_to_handle(iot, ea->ea_vaddr[0],
 130                         &ioh);
 131         else if (bus_space_map(iot, iobase,
 132                 ea->ea_reg[0].size, 0, &ioh) != 0) {
 133                 aprint_error(": can't map register space\n");
 134                 return;
 135         }
 136         COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase);
 137
 138         sc->sc_hwflags = 0;
 139         sc->sc_frequency = BAUD_BASE;
 140
 141         for (i = 0; i < ea->ea_nintr; i++)
 142                 bus_intr_establish(ea->ea_bustag, ea->ea_intr[i],
 143                     IPL_SERIAL, comintr, sc);
 144
 145         kma.kmta_consdev = NULL;
 146
 147         /* Figure out if we're the console. */
 148         com_is_input = (ea->ea_node == prom_instance_to_package(prom_stdin()));
 149         com_is_output = (ea->ea_node == prom_instance_to_package(prom_stdout()));
 150
 151         if (com_is_input || com_is_output) {
 152                 struct consdev *cn_orig;
 153
 154                 /* Record some info to attach console. */
 155                 if (strcmp(ea->ea_name, "rsc-console") == 0)
 156                         kma.kmta_baud = 115200;
 157                 else
 158                         kma.kmta_baud = 9600;
 159                 kma.kmta_cflag = (CREAD | CS8 | HUPCL);
 160
 161                 /* Attach com as the console. */
 162                 cn_orig = cn_tab;
 163                 if (comcnattach(iot, iobase, kma.kmta_baud,
 164                         sc->sc_frequency, COM_TYPE_NORMAL, kma.kmta_cflag)) {
 165                         aprint_error("Error: comcnattach failed\n");
 166                 }
 167                 if (com_is_input) {
 168                         cn_orig->cn_dev = cn_tab->cn_dev;
 169                         cn_orig->cn_probe = cn_tab->cn_probe;
 170                         cn_orig->cn_init = cn_tab->cn_init;
 171                         cn_orig->cn_getc = cn_tab->cn_getc;
 172                         cn_orig->cn_pollc = cn_tab->cn_pollc;
 173                 }
 174                 if (com_is_output) {
 175                         cn_orig->cn_putc = cn_tab->cn_putc;
 176                 }
 177                 cn_tab = cn_orig;
 178                 kma.kmta_consdev = cn_tab;
 179         }
 180         /* Now attach the driver */
 181         com_attach_subr(sc);
 182
 183 #if (NKBD > 0) || (NMS > 0)
 184         kma.kmta_tp = sc->sc_tty;
 185 /* If we figure out we're the console we should point this to our consdev */
 186
 187         /* locate the major number */
 188         maj = cdevsw_lookup_major(&com_cdevsw);
 189
 190         kma.kmta_dev = makedev(maj, device_unit(sc->sc_dev));
 191
 192 /* Attach 'em if we got 'em. */
 193 #if (NKBD > 0)
 194         kma.kmta_name = "keyboard";
 195         if (prom_getproplen(ea->ea_node, kma.kmta_name) == 0) {
 196                 config_found(self, (void *)&kma, NULL);
 197         }
 198 #endif
 199 #if (NMS > 0)
 200         kma.kmta_name = "mouse";
 201         if (prom_getproplen(ea->ea_node, kma.kmta_name) == 0) {
 202                 config_found(self, (void *)&kma, NULL);
 203         }
 204 #endif
 205 #endif
 206         if (kma.kmta_consdev) {
 207                 /*
 208                  * If we're the keyboard then we need the original
 209                  * cn_tab w/prom I/O, which sunkbd copied into kma.
 210                  * Otherwise we want conscom which we copied into
 211                  * kma.kmta_consdev.
 212                  */
 213                 cn_tab = kma.kmta_consdev;
 214         }
 215 }