com_arbus.c revision 1.9
1 /* $NetBSD: com_arbus.c,v 1.9 2011/07/01 18:40:00 dyoung 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 1.9 2011/07/01 18:40:00 dyoung 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 <sys/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, ®s.cr_ioh)) 169 return 1; 170 171 if (bus_space_map(aa->aa_bst, aa->aa_addr, aa->aa_size, 172 0, ®s.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(®s); 179 180 rv = com_probe_subr(®s); 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(®s); 245 246 if (bus_space_map(regs.cr_iot, regs.cr_iobase, regs.cr_nports, 0, 247 ®s.cr_ioh)) 248 return; 249 250 comcnattach1(®s, com_arbus_baud, freq, COM_TYPE_NORMAL, CONMODE); 251 } 252 253
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