| 1 | /* $NetBSD: com_isa.c,v 1.40 2016/10/18 22:08:30 jdolecek 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 1.40 2016/10/18 22:08:30 jdolecek 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_xname(ia->ia_ic, irq, IST_EDGE, |
| 217 | IPL_SERIAL, comintr, sc, device_xname(sc->sc_dev)); |
| 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 | |