uha_eisa.c revision 1.7
1 /* $NetBSD: uha_eisa.c,v 1.7 1997/03/29 02:32:30 mycroft Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1996, 1997 Charles M. Hannum. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. All advertising materials mentioning features or use of this software 15 * must display the following acknowledgement: 16 * This product includes software developed by Charles M. Hannum. 17 * 4. The name of the author may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 23 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/types.h> 33 #include <sys/param.h> 34 #include <sys/systm.h> 35 #include <sys/device.h> 36 #include <sys/kernel.h> 37 #include <sys/proc.h> 38 #include <sys/user.h> 39 40 #include <machine/bus.h> 41 #include <machine/intr.h> 42 43 #include <scsi/scsi_all.h> 44 #include <scsi/scsiconf.h> 45 46 #include <dev/eisa/eisavar.h> 47 #include <dev/eisa/eisadevs.h> 48 49 #include <dev/ic/uhareg.h> 50 #include <dev/ic/uhavar.h> 51 52 #define UHA_EISA_SLOT_OFFSET 0xc80 53 #define UHA_EISA_IOSIZE 0x020 54 55 int uha_eisa_match __P((struct device *, void *, void *)); 56 void uha_eisa_attach __P((struct device *, struct device *, void *)); 57 58 struct cfattach uha_eisa_ca = { 59 sizeof(struct uha_softc), uha_eisa_match, uha_eisa_attach 60 }; 61 62 #ifndef DDB 63 #define Debugger() panic("should call debugger here (uha_eisa.c)") 64 #endif /* ! DDB */ 65 #define KVTOPHYS(x) vtophys(x) 66 67 int u24_find __P((bus_space_tag_t, bus_space_handle_t, 68 struct uha_probe_data *)); 69 void u24_start_mbox __P((struct uha_softc *, struct uha_mscp *)); 70 int u24_poll __P((struct uha_softc *, struct scsi_xfer *, int)); 71 int u24_intr __P((void *)); 72 void u24_init __P((struct uha_softc *)); 73 74 /* 75 * Check the slots looking for a board we recognise 76 * If we find one, note it's address (slot) and call 77 * the actual probe routine to check it out. 78 */ 79 int 80 uha_eisa_match(parent, match, aux) 81 struct device *parent; 82 void *match, *aux; 83 { 84 struct eisa_attach_args *ea = aux; 85 bus_space_tag_t iot = ea->ea_iot; 86 bus_space_handle_t ioh; 87 int rv; 88 89 /* must match one of our known ID strings */ 90 if (strncmp(ea->ea_idstring, "USC024", 6)) 91 return (0); 92 93 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 94 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 95 return (0); 96 97 rv = u24_find(iot, ioh, NULL); 98 99 bus_space_unmap(iot, ioh, UHA_EISA_IOSIZE); 100 101 return (rv); 102 } 103 104 /* 105 * Attach all the sub-devices we can find 106 */ 107 void 108 uha_eisa_attach(parent, self, aux) 109 struct device *parent, *self; 110 void *aux; 111 { 112 struct eisa_attach_args *ea = aux; 113 struct uha_softc *sc = (void *)self; 114 bus_space_tag_t iot = ea->ea_iot; 115 bus_space_handle_t ioh; 116 struct uha_probe_data upd; 117 eisa_chipset_tag_t ec = ea->ea_ec; 118 eisa_intr_handle_t ih; 119 const char *model, *intrstr; 120 121 if (!strncmp(ea->ea_idstring, "USC024", 6)) 122 model = EISA_PRODUCT_USC0240; 123 else 124 model = "unknown model!"; 125 printf(": %s\n", model); 126 127 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 128 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 129 panic("uha_eisa_attach: could not map I/O addresses"); 130 131 sc->sc_iot = iot; 132 sc->sc_ioh = ioh; 133 if (!u24_find(iot, ioh, &upd)) 134 panic("uha_eisa_attach: u24_find failed!"); 135 136 if (eisa_intr_map(ec, upd.sc_irq, &ih)) { 137 printf("%s: couldn't map interrupt (%d)\n", 138 sc->sc_dev.dv_xname, upd.sc_irq); 139 return; 140 } 141 intrstr = eisa_intr_string(ec, ih); 142 sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 143 u24_intr, sc); 144 if (sc->sc_ih == NULL) { 145 printf("%s: couldn't establish interrupt", 146 sc->sc_dev.dv_xname); 147 if (intrstr != NULL) 148 printf(" at %s", intrstr); 149 printf("\n"); 150 return; 151 } 152 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 153 154 /* Save function pointers for later use. */ 155 sc->start_mbox = u24_start_mbox; 156 sc->poll = u24_poll; 157 sc->init = u24_init; 158 159 uha_attach(sc, &upd); 160 } 161 162 int 163 u24_find(iot, ioh, sc) 164 bus_space_tag_t iot; 165 bus_space_handle_t ioh; 166 struct uha_probe_data *sc; 167 { 168 u_int8_t config0, config1, config2; 169 int irq, drq; 170 int resetcount = 4000; /* 4 secs? */ 171 172 config0 = bus_space_read_1(iot, ioh, U24_CONFIG + 0); 173 config1 = bus_space_read_1(iot, ioh, U24_CONFIG + 1); 174 config2 = bus_space_read_1(iot, ioh, U24_CONFIG + 2); 175 if ((config0 & U24_MAGIC1) == 0 || 176 (config1 & U24_MAGIC2) == 0) 177 return (0); 178 179 drq = -1; 180 181 switch (config0 & U24_IRQ_MASK) { 182 case U24_IRQ10: 183 irq = 10; 184 break; 185 case U24_IRQ11: 186 irq = 11; 187 break; 188 case U24_IRQ14: 189 irq = 14; 190 break; 191 case U24_IRQ15: 192 irq = 15; 193 break; 194 default: 195 printf("u24_find: illegal irq setting %x\n", 196 config0 & U24_IRQ_MASK); 197 return (0); 198 } 199 200 bus_space_write_1(iot, ioh, U24_LINT, UHA_ASRST); 201 202 while (--resetcount) { 203 if (bus_space_read_1(iot, ioh, U24_LINT)) 204 break; 205 delay(1000); /* 1 mSec per loop */ 206 } 207 if (!resetcount) { 208 printf("u24_find: board timed out during reset\n"); 209 return (0); 210 } 211 212 /* if we want to fill in softc, do so now */ 213 if (sc) { 214 sc->sc_irq = irq; 215 sc->sc_drq = drq; 216 sc->sc_scsi_dev = config2 & U24_HOSTID_MASK; 217 } 218 219 return (1); 220 } 221 222 void 223 u24_start_mbox(sc, mscp) 224 struct uha_softc *sc; 225 struct uha_mscp *mscp; 226 { 227 bus_space_tag_t iot = sc->sc_iot; 228 bus_space_handle_t ioh = sc->sc_ioh; 229 int spincount = 100000; /* 1s should be enough */ 230 231 while (--spincount) { 232 if ((bus_space_read_1(iot, ioh, U24_LINT) & U24_LDIP) == 0) 233 break; 234 delay(100); 235 } 236 if (!spincount) { 237 printf("%s: uha_start_mbox, board not responding\n", 238 sc->sc_dev.dv_xname); 239 Debugger(); 240 } 241 242 bus_space_write_4(iot, ioh, U24_OGMPTR, KVTOPHYS(mscp)); 243 if (mscp->flags & MSCP_ABORT) 244 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x80); 245 else 246 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x01); 247 bus_space_write_1(iot, ioh, U24_LINT, U24_OGMFULL); 248 249 if ((mscp->xs->flags & SCSI_POLL) == 0) 250 timeout(uha_timeout, mscp, (mscp->timeout * hz) / 1000); 251 } 252 253 int 254 u24_poll(sc, xs, count) 255 struct uha_softc *sc; 256 struct scsi_xfer *xs; 257 int count; 258 { 259 bus_space_tag_t iot = sc->sc_iot; 260 bus_space_handle_t ioh = sc->sc_ioh; 261 262 while (count) { 263 /* 264 * If we had interrupts enabled, would we 265 * have got an interrupt? 266 */ 267 if (bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) 268 u24_intr(sc); 269 if (xs->flags & ITSDONE) 270 return (0); 271 delay(1000); 272 count--; 273 } 274 return (1); 275 } 276 277 int 278 u24_intr(arg) 279 void *arg; 280 { 281 struct uha_softc *sc = arg; 282 bus_space_tag_t iot = sc->sc_iot; 283 bus_space_handle_t ioh = sc->sc_ioh; 284 struct uha_mscp *mscp; 285 u_char uhastat; 286 u_long mboxval; 287 288 #ifdef UHADEBUG 289 printf("%s: uhaintr ", sc->sc_dev.dv_xname); 290 #endif /*UHADEBUG */ 291 292 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0) 293 return (0); 294 295 for (;;) { 296 /* 297 * First get all the information and then 298 * acknowledge the interrupt 299 */ 300 uhastat = bus_space_read_1(iot, ioh, U24_SINT); 301 mboxval = bus_space_read_4(iot, ioh, U24_ICMPTR); 302 bus_space_write_1(iot, ioh, U24_SINT, U24_ICM_ACK); 303 bus_space_write_1(iot, ioh, U24_ICMCMD, 0); 304 305 #ifdef UHADEBUG 306 printf("status = 0x%x ", uhastat); 307 #endif /*UHADEBUG*/ 308 309 /* 310 * Process the completed operation 311 */ 312 mscp = uha_mscp_phys_kv(sc, mboxval); 313 if (!mscp) { 314 printf("%s: BAD MSCP RETURNED!\n", 315 sc->sc_dev.dv_xname); 316 continue; /* whatever it was, it'll timeout */ 317 } 318 untimeout(uha_timeout, mscp); 319 uha_done(sc, mscp); 320 321 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0) 322 return (1); 323 } 324 } 325 326 void 327 u24_init(sc) 328 struct uha_softc *sc; 329 { 330 bus_space_tag_t iot = sc->sc_iot; 331 bus_space_handle_t ioh = sc->sc_ioh; 332 333 /* free OGM and ICM */ 334 bus_space_write_1(iot, ioh, U24_OGMCMD, 0); 335 bus_space_write_1(iot, ioh, U24_ICMCMD, 0); 336 /* make sure interrupts are enabled */ 337 #ifdef UHADEBUG 338 printf("u24_init: lmask=%02x, smask=%02x\n", 339 bus_space_read_1(iot, ioh, U24_LMASK), 340 bus_space_read_1(iot, ioh, U24_SMASK)); 341 #endif 342 bus_space_write_1(iot, ioh, U24_LMASK, 0xd2); /* XXX */ 343 bus_space_write_1(iot, ioh, U24_SMASK, 0x92); /* XXX */ 344 } 345
Indexes created Fri Sep 26 20:09:58 GMT 2025