uha_eisa.c revision 1.6
1 /* $NetBSD: uha_eisa.c,v 1.6 1996/11/15 22:53:39 jonathan Exp $ */ 2 3 /* 4 * Copyright (c) 1994, 1996 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, struct uha_softc *)); 68 void u24_start_mbox __P((struct uha_softc *, struct uha_mscp *)); 69 int u24_poll __P((struct uha_softc *, struct scsi_xfer *, int)); 70 int u24_intr __P((void *)); 71 void u24_init __P((struct uha_softc *)); 72 73 /* 74 * Check the slots looking for a board we recognise 75 * If we find one, note it's address (slot) and call 76 * the actual probe routine to check it out. 77 */ 78 int 79 uha_eisa_match(parent, match, aux) 80 struct device *parent; 81 void *match, *aux; 82 { 83 struct eisa_attach_args *ea = aux; 84 bus_space_tag_t iot = ea->ea_iot; 85 bus_space_handle_t ioh; 86 int rv; 87 88 /* must match one of our known ID strings */ 89 if (strncmp(ea->ea_idstring, "USC024", 6)) 90 return (0); 91 92 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 93 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 94 return (0); 95 96 rv = u24_find(iot, ioh, NULL); 97 98 bus_space_unmap(iot, ioh, UHA_EISA_IOSIZE); 99 100 return (rv); 101 } 102 103 /* 104 * Attach all the sub-devices we can find 105 */ 106 void 107 uha_eisa_attach(parent, self, aux) 108 struct device *parent, *self; 109 void *aux; 110 { 111 struct eisa_attach_args *ea = aux; 112 struct uha_softc *sc = (void *)self; 113 bus_space_tag_t iot = ea->ea_iot; 114 bus_space_handle_t ioh; 115 eisa_chipset_tag_t ec = ea->ea_ec; 116 eisa_intr_handle_t ih; 117 const char *model, *intrstr; 118 119 if (!strncmp(ea->ea_idstring, "USC024", 6)) 120 model = EISA_PRODUCT_USC0240; 121 else 122 model = "unknown model!"; 123 printf(": %s\n", model); 124 125 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 126 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 127 panic("uha_attach: could not map I/O addresses"); 128 129 sc->sc_iot = iot; 130 sc->sc_ioh = ioh; 131 if (!u24_find(iot, ioh, sc)) 132 panic("uha_attach: u24_find failed!"); 133 134 if (eisa_intr_map(ec, sc->sc_irq, &ih)) { 135 printf("%s: couldn't map interrupt (%d)\n", 136 sc->sc_dev.dv_xname, sc->sc_irq); 137 return; 138 } 139 intrstr = eisa_intr_string(ec, ih); 140 sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 141 u24_intr, sc); 142 if (sc->sc_ih == NULL) { 143 printf("%s: couldn't establish interrupt", 144 sc->sc_dev.dv_xname); 145 if (intrstr != NULL) 146 printf(" at %s", intrstr); 147 printf("\n"); 148 return; 149 } 150 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 151 152 /* Save function pointers for later use. */ 153 sc->start_mbox = u24_start_mbox; 154 sc->poll = u24_poll; 155 sc->init = u24_init; 156 157 uha_attach(sc); 158 } 159 160 int 161 u24_find(iot, ioh, sc) 162 bus_space_tag_t iot; 163 bus_space_handle_t ioh; 164 struct uha_softc *sc; 165 { 166 u_int8_t config0, config1, config2; 167 int irq, drq; 168 int resetcount = 4000; /* 4 secs? */ 169 170 config0 = bus_space_read_1(iot, ioh, U24_CONFIG + 0); 171 config1 = bus_space_read_1(iot, ioh, U24_CONFIG + 1); 172 config2 = bus_space_read_1(iot, ioh, U24_CONFIG + 2); 173 if ((config0 & U24_MAGIC1) == 0 || 174 (config1 & U24_MAGIC2) == 0) 175 return (0); 176 177 drq = -1; 178 179 switch (config0 & U24_IRQ_MASK) { 180 case U24_IRQ10: 181 irq = 10; 182 break; 183 case U24_IRQ11: 184 irq = 11; 185 break; 186 case U24_IRQ14: 187 irq = 14; 188 break; 189 case U24_IRQ15: 190 irq = 15; 191 break; 192 default: 193 printf("u24_find: illegal irq setting %x\n", 194 config0 & U24_IRQ_MASK); 195 return (0); 196 } 197 198 bus_space_write_1(iot, ioh, U24_LINT, UHA_ASRST); 199 200 while (--resetcount) { 201 if (bus_space_read_1(iot, ioh, U24_LINT)) 202 break; 203 delay(1000); /* 1 mSec per loop */ 204 } 205 if (!resetcount) { 206 printf("u24_find: board timed out during reset\n"); 207 return (0); 208 } 209 210 /* if we want to fill in softc, do so now */ 211 if (sc != NULL) { 212 sc->sc_irq = irq; 213 sc->sc_drq = drq; 214 sc->sc_scsi_dev = config2 & U24_HOSTID_MASK; 215 } 216 217 return (1); 218 } 219 220 void 221 u24_start_mbox(sc, mscp) 222 struct uha_softc *sc; 223 struct uha_mscp *mscp; 224 { 225 bus_space_tag_t iot = sc->sc_iot; 226 bus_space_handle_t ioh = sc->sc_ioh; 227 int spincount = 100000; /* 1s should be enough */ 228 229 while (--spincount) { 230 if ((bus_space_read_1(iot, ioh, U24_LINT) & U24_LDIP) == 0) 231 break; 232 delay(100); 233 } 234 if (!spincount) { 235 printf("%s: uha_start_mbox, board not responding\n", 236 sc->sc_dev.dv_xname); 237 Debugger(); 238 } 239 240 bus_space_write_4(iot, ioh, U24_OGMPTR, KVTOPHYS(mscp)); 241 if (mscp->flags & MSCP_ABORT) 242 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x80); 243 else 244 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x01); 245 bus_space_write_1(iot, ioh, U24_LINT, U24_OGMFULL); 246 247 if ((mscp->xs->flags & SCSI_POLL) == 0) 248 timeout(uha_timeout, mscp, (mscp->timeout * hz) / 1000); 249 } 250 251 int 252 u24_poll(sc, xs, count) 253 struct uha_softc *sc; 254 struct scsi_xfer *xs; 255 int count; 256 { 257 bus_space_tag_t iot = sc->sc_iot; 258 bus_space_handle_t ioh = sc->sc_ioh; 259 260 while (count) { 261 /* 262 * If we had interrupts enabled, would we 263 * have got an interrupt? 264 */ 265 if (bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) 266 u24_intr(sc); 267 if (xs->flags & ITSDONE) 268 return (0); 269 delay(1000); 270 count--; 271 } 272 return (1); 273 } 274 275 int 276 u24_intr(arg) 277 void *arg; 278 { 279 struct uha_softc *sc = arg; 280 bus_space_tag_t iot = sc->sc_iot; 281 bus_space_handle_t ioh = sc->sc_ioh; 282 struct uha_mscp *mscp; 283 u_char uhastat; 284 u_long mboxval; 285 286 #ifdef UHADEBUG 287 printf("%s: uhaintr ", sc->sc_dev.dv_xname); 288 #endif /*UHADEBUG */ 289 290 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0) 291 return (0); 292 293 for (;;) { 294 /* 295 * First get all the information and then 296 * acknowledge the interrupt 297 */ 298 uhastat = bus_space_read_1(iot, ioh, U24_SINT); 299 mboxval = bus_space_read_4(iot, ioh, U24_ICMPTR); 300 bus_space_write_1(iot, ioh, U24_SINT, U24_ICM_ACK); 301 bus_space_write_1(iot, ioh, U24_ICMCMD, 0); 302 303 #ifdef UHADEBUG 304 printf("status = 0x%x ", uhastat); 305 #endif /*UHADEBUG*/ 306 307 /* 308 * Process the completed operation 309 */ 310 mscp = uha_mscp_phys_kv(sc, mboxval); 311 if (!mscp) { 312 printf("%s: BAD MSCP RETURNED!\n", 313 sc->sc_dev.dv_xname); 314 continue; /* whatever it was, it'll timeout */ 315 } 316 untimeout(uha_timeout, mscp); 317 uha_done(sc, mscp); 318 319 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0) 320 return (1); 321 } 322 } 323 324 void 325 u24_init(sc) 326 struct uha_softc *sc; 327 { 328 bus_space_tag_t iot = sc->sc_iot; 329 bus_space_handle_t ioh = sc->sc_ioh; 330 331 /* free OGM and ICM */ 332 bus_space_write_1(iot, ioh, U24_OGMCMD, 0); 333 bus_space_write_1(iot, ioh, U24_ICMCMD, 0); 334 /* make sure interrupts are enabled */ 335 #ifdef UHADEBUG 336 printf("u24_init: lmask=%02x, smask=%02x\n", 337 bus_space_read_1(iot, ioh, U24_LMASK), 338 bus_space_read_1(iot, ioh, U24_SMASK)); 339 #endif 340 bus_space_write_1(iot, ioh, U24_LMASK, 0xd2); /* XXX */ 341 bus_space_write_1(iot, ioh, U24_SMASK, 0x92); /* XXX */ 342 } 343
Indexes created Fri Sep 26 08:10:20 GMT 2025