sys/arch/mips/atheros/dev/com_arbus.c

   1 /* $Id: com_arbus.c,v 1.7 2008/04/28 20:23:28 martin Exp $ */
   2 /*-
   3  * Copyright (c) 2006 Urbana-Champaign Independent Media Center.
   4  * Copyright (c) 2006 Garrett D'Amore.
   5  * All rights reserved.
   6  *
   7  * Portions of this code were written by Garrett D'Amore for the
   8  * Champaign-Urbana Community Wireless Network Project.
   9  *
  10  * Redistribution and use in source and binary forms, with or
  11  * without modification, are permitted provided that the following
  12  * conditions 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
  16  *    copyright notice, this list of conditions and the following
  17  *    disclaimer in the documentation and/or other materials provided
  18  *    with the distribution.
  19  * 3. All advertising materials mentioning features or use of this
  20  *    software must display the following acknowledgements:
  21  *      This product includes software developed by the Urbana-Champaign
  22  *      Independent Media Center.
  23  *      This product includes software developed by Garrett D'Amore.
  24  * 4. Urbana-Champaign Independent Media Center's name and Garrett
  25  *    D'Amore's name may not be used to endorse or promote products
  26  *    derived from this software without specific prior written permission.
  27  *
  28  * THIS SOFTWARE IS PROVIDED BY THE URBANA-CHAMPAIGN INDEPENDENT
  29  * MEDIA CENTER AND GARRETT D'AMORE ``AS IS'' AND ANY EXPRESS OR
  30  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  31  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  32  * ARE DISCLAIMED.  IN NO EVENT SHALL THE URBANA-CHAMPAIGN INDEPENDENT
  33  * MEDIA CENTER OR GARRETT D'AMORE BE LIABLE FOR ANY DIRECT, INDIRECT,
  34  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  35  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  36  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  37  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  38  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  39  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  40  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  41  */
  42
  43 /*-
  44  * Copyright (c) 1998 The NetBSD Foundation, Inc.
  45  * All rights reserved.
  46  *
  47  * This code is derived from software contributed to The NetBSD Foundation
  48  * by Charles M. Hannum.
  49  *
  50  * Redistribution and use in source and binary forms, with or without
  51  * modification, are permitted provided that the following conditions
  52  * are met:
  53  * 1. Redistributions of source code must retain the above copyright
  54  *    notice, this list of conditions and the following disclaimer.
  55  * 2. Redistributions in binary form must reproduce the above copyright
  56  *    notice, this list of conditions and the following disclaimer in the
  57  *    documentation and/or other materials provided with the distribution.
  58  *
  59  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  60  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  61  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  62  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  63  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  64  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  65  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  66  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  67  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  68  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  69  * POSSIBILITY OF SUCH DAMAGE.
  70  */
  71
  72 /*-
  73  * Copyright (c) 1991 The Regents of the University of California.
  74  * All rights reserved.
  75  *
  76  * Redistribution and use in source and binary forms, with or without
  77  * modification, are permitted provided that the following conditions
  78  * are met:
  79  * 1. Redistributions of source code must retain the above copyright
  80  *    notice, this list of conditions and the following disclaimer.
  81  * 2. Redistributions in binary form must reproduce the above copyright
  82  *    notice, this list of conditions and the following disclaimer in the
  83  *    documentation and/or other materials provided with the distribution.
  84  * 3. Neither the name of the University nor the names of its contributors
  85  *    may be used to endorse or promote products derived from this software
  86  *    without specific prior written permission.
  87  *
  88  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  89  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  90  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  91  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  92  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  93  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  94  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  95  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  96  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  97  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  98  * SUCH DAMAGE.
  99  *
 100  *      @(#)com.c       7.5 (Berkeley) 5/16/91
 101  */
 102
 103 #include <sys/cdefs.h>
 104 __KERNEL_RCSID(0, "$NetBSD: com_arbus.c,v 1.6 2008/03/14 15:09:10 cube Exp $");
 105
 106 #include <sys/param.h>
 107 #include <sys/systm.h>
 108 #include <sys/device.h>
 109 #include <sys/kernel.h>
 110 #include <sys/termios.h>
 111 #include <sys/ttydefaults.h>
 112 #include <sys/types.h>
 113
 114 #include <machine/bus.h>
 115
 116 #include <dev/cons.h>
 117 #include <dev/ic/comreg.h>
 118 #include <dev/ic/comvar.h>
 119
 120 #include <mips/cpuregs.h>
 121 #include <mips/atheros/include/arbusvar.h>
 122 #include <mips/atheros/include/ar531xvar.h>
 123
 124 #include "opt_com.h"
 125
 126 struct com_arbus_softc {
 127         struct com_softc sc_com;
 128 };
 129
 130 static void com_arbus_initmap(struct com_regs *);
 131 //static bus_space_tag_t com_arbus_get_bus_space_tag(void);
 132 static int com_arbus_match(device_t, cfdata_t , void *);
 133 static void com_arbus_attach(device_t, device_t, void *);
 134
 135 CFATTACH_DECL_NEW(com_arbus, sizeof(struct com_arbus_softc),
 136     com_arbus_match, com_arbus_attach, NULL, NULL);
 137
 138 #if 0
 139 #ifdef  TTYDEF_SPEED
 140 #define COM_ARBUS_BAUD  TTYDEF_SPEED
 141 #else
 142 #define COM_ARBUS_BAUD  115200
 143 #endif
 144 #endif
 145
 146 #ifndef COM_ARBUS_BAUD
 147 #define COM_ARBUS_BAUD  115200
 148 #endif
 149
 150 int     com_arbus_baud = COM_ARBUS_BAUD;
 151
 152 #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */
 153
 154 #ifndef COM_REGMAP
 155 #error  COM_REGMAP not defined!
 156 #endif
 157
 158 int
 159 com_arbus_match(device_t parent, cfdata_t cf, void *aux)
 160 {
 161         struct arbus_attach_args        *aa = aux;
 162         struct com_regs                 regs;
 163         int                             rv;
 164
 165         if (strcmp(aa->aa_name, cf->cf_name) != 0)
 166                 return 0;
 167
 168         if (com_is_console(aa->aa_bst, aa->aa_addr, &regs.cr_ioh))
 169                 return 1;
 170
 171         if (bus_space_map(aa->aa_bst, aa->aa_addr, aa->aa_size,
 172                 0, &regs.cr_ioh))
 173                 return 0;
 174
 175         regs.cr_iot = aa->aa_bst;
 176         regs.cr_iobase = aa->aa_addr;
 177         regs.cr_nports = aa->aa_size;
 178         com_arbus_initmap(&regs);
 179
 180         rv = com_probe_subr(&regs);
 181
 182         bus_space_unmap(aa->aa_bst, regs.cr_ioh, aa->aa_size);
 183
 184         return rv;
 185 }
 186
 187 void
 188 com_arbus_attach(device_t parent, device_t self, void *aux)
 189 {
 190         struct com_arbus_softc *arsc = device_private(self);
 191         struct com_softc *sc = &arsc->sc_com;
 192         struct arbus_attach_args *aa = aux;
 193         prop_number_t prop;
 194         bus_space_handle_t ioh;
 195
 196         sc->sc_dev = self;
 197
 198         prop = prop_dictionary_get(device_properties(sc->sc_dev),
 199             "frequency");
 200         if (prop == NULL) {
 201                 aprint_error(": unable to get frequency property\n");
 202                 return;
 203         }
 204         KASSERT(prop_object_type(prop) == PROP_TYPE_NUMBER);
 205
 206         sc->sc_frequency = (int)prop_number_integer_value(prop);
 207
 208         if (!com_is_console(aa->aa_bst, aa->aa_addr, &ioh) &&
 209             bus_space_map(aa->aa_bst, aa->aa_addr, aa->aa_size, 0,
 210                 &ioh) != 0) {
 211                 aprint_error(": can't map registers\n");
 212                 return;
 213         }
 214
 215         COM_INIT_REGS(sc->sc_regs, aa->aa_bst, ioh, aa->aa_addr);
 216         sc->sc_regs.cr_nports = aa->aa_size;
 217         com_arbus_initmap(&sc->sc_regs);
 218
 219         com_attach_subr(sc);
 220
 221         arbus_intr_establish(aa->aa_cirq, aa->aa_mirq, comintr, sc);
 222 }
 223
 224 void
 225 com_arbus_initmap(struct com_regs *regsp)
 226 {
 227         int     i;
 228
 229         /* rewrite the map to shift for alignment */
 230         for (i = 0;
 231              i < (sizeof (regsp->cr_map) / sizeof (regsp->cr_map[0])); i++) {
 232                 regsp->cr_map[i] = (com_std_map[i] * 4) + 3;
 233         }
 234 }
 235
 236 void
 237 com_arbus_cnattach(bus_addr_t addr, uint32_t freq)
 238 {
 239         struct com_regs         regs;
 240
 241         regs.cr_iot = arbus_get_bus_space_tag();
 242         regs.cr_iobase = addr;
 243         regs.cr_nports = 0x1000;
 244         com_arbus_initmap(&regs);
 245
 246         if (bus_space_map(regs.cr_iot, regs.cr_iobase, regs.cr_nports, 0,
 247                 &regs.cr_ioh))
 248                 return;
 249
 250         comcnattach1(&regs, com_arbus_baud, freq, COM_TYPE_NORMAL, CONMODE);
 251 }
 252