com_vrip.c revision 1.9
1 /* $NetBSD: com_vrip.c,v 1.9 2001/09/16 05:32:20 uch Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 SASAKI Takesi. All rights reserved. 5 * Copyright (c) 1999 PocketBSD Project. 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 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the PocketBSD project 18 * and its contributors. 19 * 4. Neither the name of the project nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 */ 36 37 #include "opt_kgdb.h" 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/device.h> 42 #include <sys/reboot.h> 43 44 #include <sys/termios.h> 45 46 #include <machine/intr.h> 47 #include <machine/bus.h> 48 49 #include <machine/platid.h> 50 #include <machine/platid_mask.h> 51 #include <machine/config_hook.h> 52 53 #include <hpcmips/vr/vr.h> 54 #include <hpcmips/vr/vripvar.h> 55 #include <hpcmips/vr/cmureg.h> 56 #include <hpcmips/vr/siureg.h> 57 58 #include <dev/ic/comvar.h> 59 #include <dev/ic/comreg.h> 60 61 #include "opt_vr41xx.h" 62 #include <hpcmips/vr/vrgiuvar.h> 63 #include <hpcmips/vr/com_vripvar.h> 64 65 #include "locators.h" 66 67 #define COMVRIPDEBUG 68 #ifdef COMVRIPDEBUG 69 int com_vrip_debug = 0; 70 #define DPRINTF(arg) if (com_vrip_debug) printf arg; 71 #define VPRINTF(arg) if (com_vrip_debug || bootverbose) printf arg; 72 #else 73 #define DPRINTF(arg) 74 #define VPRINTF(arg) if (bootverbose) printf arg; 75 #endif 76 77 struct com_vrip_softc { 78 struct com_softc sc_com; 79 int sc_pwctl; 80 }; 81 82 static int com_vrip_probe(struct device *, struct cfdata *, void *); 83 static void com_vrip_attach(struct device *, struct device *, void *); 84 static int com_vrip_common_probe(bus_space_tag_t, int); 85 int find_comenableport_from_cfdata(int *); 86 87 void vrcmu_init(void); 88 void vrcmu_supply(int); 89 void vrcmu_mask(int); 90 91 struct cfattach com_vrip_ca = { 92 sizeof(struct com_vrip_softc), com_vrip_probe, com_vrip_attach 93 }; 94 95 /* For serial console */ 96 extern struct cfdata cfdata[]; 97 int 98 find_comenableport_from_cfdata(int *port) 99 { 100 platid_mask_t mask; 101 struct cfdata *cf; 102 int id; 103 104 printf ("COM enable port: "); 105 for (cf = cfdata; cf->cf_driver; cf++) { 106 if (strcmp(cf->cf_driver->cd_name, "pwctl")) 107 continue; 108 mask = PLATID_DEREF(cf->cf_loc[HPCIOIFCF_PLATFORM]); 109 id = cf->cf_loc[HPCIOIFCF_ID]; 110 if (platid_match(&platid, &mask) && 111 id == CONFIG_HOOK_POWERCONTROL_COM0) 112 goto found; 113 } 114 *port = -1; 115 printf ("not found\n"); 116 return (0); 117 found: 118 *port = cf->cf_loc[HPCIOIFCF_PORT]; 119 printf ("#%d\n", *port); 120 121 return (1); 122 } 123 124 int 125 com_vrip_cndb_attach(bus_space_tag_t iot, int iobase, int rate, int frequency, 126 tcflag_t cflag, int kgdb) 127 { 128 int port; 129 /* Platform dependent setting */ 130 __vrcmu_supply(CMUMSKSSIU | CMUMSKSIU, 1); 131 if (find_comenableport_from_cfdata(&port)) 132 __vrgiu_out(port, 1); 133 134 if (!com_vrip_common_probe(iot, iobase)) 135 return (EIO); /* I can't find appropriate error number. */ 136 #ifdef KGDB 137 if (kgdb) 138 return (com_kgdb_attach(iot, iobase, rate, frequency, cflag)); 139 else 140 #endif 141 return (comcnattach(iot, iobase, rate, frequency, cflag)); 142 } 143 144 static int 145 com_vrip_common_probe(bus_space_tag_t iot, int iobase) 146 { 147 bus_space_handle_t ioh; 148 int rv; 149 150 if (bus_space_map(iot, iobase, 1, 0, &ioh)) { 151 printf(": can't map i/o space\n"); 152 return 0; 153 } 154 rv = comprobe1(iot, ioh); 155 bus_space_unmap(iot, ioh, 1); 156 return (rv); 157 } 158 159 static int 160 com_vrip_probe(struct device *parent, struct cfdata *cf, void *aux) 161 { 162 struct vrip_attach_args *va = aux; 163 bus_space_tag_t iot = va->va_iot; 164 int rv; 165 166 DPRINTF(("==com_vrip_probe")); 167 168 if (va->va_addr == VRIPCF_ADDR_DEFAULT || 169 va->va_intr == VRIPCF_INTR_DEFAULT) { 170 printf(": need addr and intr.\n"); 171 return (0); 172 } 173 174 if (!va->va_cf || !va->va_cf->cf_clock) 175 return 0; /* not yet CMU attached. Try again later. */ 176 177 va->va_cf->cf_clock(va->va_cc, CMUMSKSSIU | CMUMSKSIU, 1); 178 179 if (com_is_console(iot, va->va_addr, 0)) { 180 /* 181 * We have alredy probed. 182 */ 183 rv = 1; 184 } else { 185 rv = com_vrip_common_probe(iot, va->va_addr); 186 } 187 188 DPRINTF((rv ? ": found COM ports\n" : ": can't probe COM device\n")); 189 190 if (rv) { 191 va->va_size = COM_NPORTS; 192 } 193 return (rv); 194 } 195 196 197 static void 198 com_vrip_attach(struct device *parent, struct device *self, void *aux) 199 { 200 struct com_vrip_softc *vsc = (void *) self; 201 struct com_softc *sc = &vsc->sc_com; 202 struct vrip_attach_args *va = aux; 203 204 bus_space_tag_t iot = va->va_iot; 205 bus_space_handle_t ioh; 206 207 vsc->sc_pwctl = sc->sc_dev.dv_cfdata->cf_loc[VRIPCF_PWCTL]; 208 209 DPRINTF(("==com_vrip_attach")); 210 211 if (bus_space_map(iot, va->va_addr, 1, 0, &ioh)) { 212 printf(": can't map bus space\n"); 213 return; 214 } 215 sc->sc_iobase = va->va_addr; 216 sc->sc_iot = iot; 217 sc->sc_ioh = ioh; 218 219 sc->enable = NULL; /* XXX: CMU control */ 220 sc->disable = NULL; 221 222 sc->sc_frequency = VRCOM_FREQ; 223 /* Power management */ 224 va->va_cf->cf_clock(va->va_cc, CMUMSKSSIU | CMUMSKSIU, 1); 225 /* 226 va->va_gf->gf_portwrite(va->va_gc, GIUPORT_COM, 1); 227 */ 228 /* XXX, locale 'ID' must be need */ 229 config_hook_call(CONFIG_HOOK_POWERCONTROL, vsc->sc_pwctl, (void*)1); 230 231 DPRINTF(("Try to attach com.\n")); 232 com_attach_subr(sc); 233 234 DPRINTF(("Establish intr")); 235 vrip_intr_establish(va->va_vc, va->va_intr, IPL_TTY, comintr, self); 236 237 DPRINTF((":return()")); 238 VPRINTF(("%s: pwctl %d\n", vsc->sc_com.sc_dev.dv_xname, vsc->sc_pwctl)); 239 } 240
Indexes created Tue Sep 30 20:09:53 GMT 2025