1 /* $NetBSD: com_isa.c,v 1.39 2010/02/24 22:37:58 dyoung Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * 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 copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 1991 The Regents of the University of California. 34 * All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)com.c 7.5 (Berkeley) 5/16/91 61 */ 62 63 #include <sys/cdefs.h> 64 __KERNEL_RCSID(0, "$NetBSD: com_isa.c,v 1.39 2010/02/24 22:37:58 dyoung Exp $"); 65 66 #include <sys/param.h> 67 #include <sys/systm.h> 68 #include <sys/ioctl.h> 69 #include <sys/select.h> 70 #include <sys/tty.h> 71 #include <sys/proc.h> 72 #include <sys/file.h> 73 #include <sys/uio.h> 74 #include <sys/kernel.h> 75 #include <sys/syslog.h> 76 #include <sys/device.h> 77 78 #include <sys/intr.h> 79 #include <sys/bus.h> 80 81 #include <dev/ic/comreg.h> 82 #include <dev/ic/comvar.h> 83 #ifdef COM_HAYESP 84 #include <dev/ic/hayespreg.h> 85 #endif 86 87 #include <dev/isa/isavar.h> 88 89 struct com_isa_softc { 90 struct com_softc sc_com; /* real "com" softc */ 91 92 /* ISA-specific goo. */ 93 isa_chipset_tag_t sc_ic; 94 void *sc_ih; /* interrupt handler */ 95 int sc_irq; 96 }; 97 98 static bool com_isa_suspend(device_t, const pmf_qual_t *); 99 static bool com_isa_resume(device_t, const pmf_qual_t *); 100 101 int com_isa_probe(device_t, cfdata_t , void *); 102 void com_isa_attach(device_t, device_t, void *); 103 static int com_isa_detach(device_t, int); 104 #ifdef COM_HAYESP 105 int com_isa_isHAYESP(bus_space_handle_t, struct com_softc *); 106 #endif 107 108 109 CFATTACH_DECL3_NEW(com_isa, sizeof(struct com_isa_softc), 110 com_isa_probe, com_isa_attach, com_isa_detach, NULL, 111 NULL, NULL, DVF_DETACH_SHUTDOWN); 112 113 int 114 com_isa_probe(device_t parent, cfdata_t match, void *aux) 115 { 116 bus_space_tag_t iot; 117 bus_space_handle_t ioh; 118 int iobase; 119 int rv = 1; 120 struct isa_attach_args *ia = aux; 121 122 if (ia->ia_nio < 1) 123 return (0); 124 if (ia->ia_nirq < 1) 125 return (0); 126 127 if (ISA_DIRECT_CONFIG(ia)) 128 return (0); 129 130 /* Disallow wildcarded i/o address. */ 131 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 132 return (0); 133 134 /* Don't allow wildcarded IRQ. */ 135 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 136 return (0); 137 138 iot = ia->ia_iot; 139 iobase = ia->ia_io[0].ir_addr; 140 141 /* if it's in use as console, it's there. */ 142 if (!com_is_console(iot, iobase, 0)) { 143 if (bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { 144 return 0; 145 } 146 rv = comprobe1(iot, ioh); 147 bus_space_unmap(iot, ioh, COM_NPORTS); 148 } 149 150 if (rv) { 151 ia->ia_nio = 1; 152 ia->ia_io[0].ir_size = COM_NPORTS; 153 154 ia->ia_nirq = 1; 155 156 ia->ia_niomem = 0; 157 ia->ia_ndrq = 0; 158 } 159 return (rv); 160 } 161 162 void 163 com_isa_attach(device_t parent, device_t self, void *aux) 164 { 165 struct com_isa_softc *isc = device_private(self); 166 struct com_softc *sc = &isc->sc_com; 167 int iobase, irq; 168 bus_space_tag_t iot; 169 bus_space_handle_t ioh; 170 struct isa_attach_args *ia = aux; 171 #ifdef COM_HAYESP 172 int hayesp_ports[] = { 0x140, 0x180, 0x280, 0x300, 0 }; 173 int *hayespp; 174 #endif 175 176 /* 177 * We're living on an isa. 178 */ 179 iobase = ia->ia_io[0].ir_addr; 180 iot = ia->ia_iot; 181 182 if (!com_is_console(iot, iobase, &ioh) && 183 bus_space_map(iot, iobase, COM_NPORTS, 0, &ioh)) { 184 printf(": can't map i/o space\n"); 185 return; 186 } 187 188 sc->sc_dev = self; 189 190 COM_INIT_REGS(sc->sc_regs, iot, ioh, iobase); 191 192 sc->sc_frequency = COM_FREQ; 193 irq = ia->ia_irq[0].ir_irq; 194 195 #ifdef COM_HAYESP 196 for (hayespp = hayesp_ports; *hayespp != 0; hayespp++) { 197 bus_space_handle_t hayespioh; 198 #define HAYESP_NPORTS 8 199 if (bus_space_map(iot, *hayespp, HAYESP_NPORTS, 0, &hayespioh)) 200 continue; 201 if (com_isa_isHAYESP(hayespioh, sc)) { 202 break; 203 } 204 bus_space_unmap(iot, hayespioh, HAYESP_NPORTS); 205 } 206 #endif 207 208 com_attach_subr(sc); 209 210 if (!pmf_device_register1(self, com_isa_suspend, com_isa_resume, 211 com_cleanup)) 212 aprint_error_dev(self, "couldn't establish power handler\n"); 213 214 isc->sc_ic = ia->ia_ic; 215 isc->sc_irq = irq; 216 isc->sc_ih = isa_intr_establish(ia->ia_ic, irq, IST_EDGE, IPL_SERIAL, 217 comintr, sc); 218 } 219 220 static bool 221 com_isa_suspend(device_t self, const pmf_qual_t *qual) 222 { 223 struct com_isa_softc *isc = device_private(self); 224 225 if (!com_suspend(self, qual)) 226 return false; 227 228 isa_intr_disestablish(isc->sc_ic, isc->sc_ih); 229 isc->sc_ih = NULL; 230 231 return true; 232 } 233 234 static bool 235 com_isa_resume(device_t self, const pmf_qual_t *qual) 236 { 237 struct com_isa_softc *isc = device_private(self); 238 struct com_softc *sc = &isc->sc_com; 239 240 isc->sc_ih = isa_intr_establish(isc->sc_ic, isc->sc_irq, IST_EDGE, 241 IPL_SERIAL, comintr, sc); 242 243 return com_resume(self, qual); 244 } 245 246 static int 247 com_isa_detach(device_t self, int flags) 248 { 249 struct com_isa_softc *isc = device_private(self); 250 struct com_softc *sc = &isc->sc_com; 251 const struct com_regs *cr = &sc->sc_regs; 252 int rc; 253 254 if ((rc = com_detach(self, flags)) != 0) 255 return rc; 256 257 if (isc->sc_ih != NULL) 258 isa_intr_disestablish(isc->sc_ic, isc->sc_ih); 259 260 pmf_device_deregister(self); 261 262 com_cleanup(self, 0); 263 264 #ifdef COM_HAYESP 265 if (sc->sc_type == COM_TYPE_HAYESP) 266 bus_space_unmap(cr->cr_iot, sc->sc_hayespioh, HAYESP_NPORTS); 267 #endif 268 bus_space_unmap(cr->cr_iot, cr->cr_ioh, COM_NPORTS); 269 270 return 0; 271 } 272 273 #ifdef COM_HAYESP 274 int 275 com_isa_isHAYESP(bus_space_handle_t hayespioh, struct com_softc *sc) 276 { 277 char val, dips; 278 int combaselist[] = { 0x3f8, 0x2f8, 0x3e8, 0x2e8 }; 279 bus_space_tag_t iot = sc->sc_regs.cr_iot; 280 281 /* 282 * Hayes ESP cards have two iobases. One is for compatibility with 283 * 16550 serial chips, and at the same ISA PC base addresses. The 284 * other is for ESP-specific enhanced features, and lies at a 285 * different addressing range entirely (0x140, 0x180, 0x280, or 0x300). 286 */ 287 288 /* Test for ESP signature */ 289 if ((bus_space_read_1(iot, hayespioh, 0) & 0xf3) == 0) 290 return (0); 291 292 /* 293 * ESP is present at ESP enhanced base address; unknown com port 294 */ 295 296 /* Get the dip-switch configurations */ 297 bus_space_write_1(iot, hayespioh, HAYESP_CMD1, HAYESP_GETDIPS); 298 dips = bus_space_read_1(iot, hayespioh, HAYESP_STATUS1); 299 300 /* Determine which com port this ESP card services: bits 0,1 of */ 301 /* dips is the port # (0-3); combaselist[val] is the com_iobase */ 302 if (sc->sc_regs.cr_iobase != combaselist[dips & 0x03]) 303 return (0); 304 305 printf(": ESP"); 306 307 /* Check ESP Self Test bits. */ 308 /* Check for ESP version 2.0: bits 4,5,6 == 010 */ 309 bus_space_write_1(iot, hayespioh, HAYESP_CMD1, HAYESP_GETTEST); 310 val = bus_space_read_1(iot, hayespioh, HAYESP_STATUS1); /* Clear reg1 */ 311 val = bus_space_read_1(iot, hayespioh, HAYESP_STATUS2); 312 if ((val & 0x70) < 0x20) { 313 printf("-old (%o)", val & 0x70); 314 /* we do not support the necessary features */ 315 return (0); 316 } 317 318 /* Check for ability to emulate 16550: bit 8 == 1 */ 319 if ((dips & 0x80) == 0) { 320 printf(" slave"); 321 /* XXX Does slave really mean no 16550 support?? */ 322 return (0); 323 } 324 325 /* 326 * If we made it this far, we are a full-featured ESP v2.0 (or 327 * better), at the correct com port address. 328 */ 329 sc->sc_type = COM_TYPE_HAYESP; 330 sc->sc_hayespioh = hayespioh; 331 sc->sc_fifolen = 1024; 332 sc->sc_prescaler = 0; /* set prescaler to x1. */ 333 printf(", 1024 byte fifo\n"); 334 return (1); 335 } 336 #endif 337