uha_eisa.c revision 1.7.2.1
1 /* $NetBSD: uha_eisa.c,v 1.7.2.1 1997/05/13 03:02:04 thorpej 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 66 int u24_find __P((bus_space_tag_t, bus_space_handle_t, 67 struct uha_probe_data *)); 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_dma_tag_t dmat = ea->ea_dmat; 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 sc->sc_dmat = dmat; 134 if (!u24_find(iot, ioh, &upd)) 135 panic("uha_eisa_attach: u24_find failed!"); 136 137 sc->sc_dmaflags = 0; 138 139 if (eisa_intr_map(ec, upd.sc_irq, &ih)) { 140 printf("%s: couldn't map interrupt (%d)\n", 141 sc->sc_dev.dv_xname, upd.sc_irq); 142 return; 143 } 144 intrstr = eisa_intr_string(ec, ih); 145 sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 146 u24_intr, sc); 147 if (sc->sc_ih == NULL) { 148 printf("%s: couldn't establish interrupt", 149 sc->sc_dev.dv_xname); 150 if (intrstr != NULL) 151 printf(" at %s", intrstr); 152 printf("\n"); 153 return; 154 } 155 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 156 157 /* Save function pointers for later use. */ 158 sc->start_mbox = u24_start_mbox; 159 sc->poll = u24_poll; 160 sc->init = u24_init; 161 162 uha_attach(sc, &upd); 163 } 164 165 int 166 u24_find(iot, ioh, sc) 167 bus_space_tag_t iot; 168 bus_space_handle_t ioh; 169 struct uha_probe_data *sc; 170 { 171 u_int8_t config0, config1, config2; 172 int irq, drq; 173 int resetcount = 4000; /* 4 secs? */ 174 175 config0 = bus_space_read_1(iot, ioh, U24_CONFIG + 0); 176 config1 = bus_space_read_1(iot, ioh, U24_CONFIG + 1); 177 config2 = bus_space_read_1(iot, ioh, U24_CONFIG + 2); 178 if ((config0 & U24_MAGIC1) == 0 || 179 (config1 & U24_MAGIC2) == 0) 180 return (0); 181 182 drq = -1; 183 184 switch (config0 & U24_IRQ_MASK) { 185 case U24_IRQ10: 186 irq = 10; 187 break; 188 case U24_IRQ11: 189 irq = 11; 190 break; 191 case U24_IRQ14: 192 irq = 14; 193 break; 194 case U24_IRQ15: 195 irq = 15; 196 break; 197 default: 198 printf("u24_find: illegal irq setting %x\n", 199 config0 & U24_IRQ_MASK); 200 return (0); 201 } 202 203 bus_space_write_1(iot, ioh, U24_LINT, UHA_ASRST); 204 205 while (--resetcount) { 206 if (bus_space_read_1(iot, ioh, U24_LINT)) 207 break; 208 delay(1000); /* 1 mSec per loop */ 209 } 210 if (!resetcount) { 211 printf("u24_find: board timed out during reset\n"); 212 return (0); 213 } 214 215 /* if we want to fill in softc, do so now */ 216 if (sc) { 217 sc->sc_irq = irq; 218 sc->sc_drq = drq; 219 sc->sc_scsi_dev = config2 & U24_HOSTID_MASK; 220 } 221 222 return (1); 223 } 224 225 void 226 u24_start_mbox(sc, mscp) 227 struct uha_softc *sc; 228 struct uha_mscp *mscp; 229 { 230 bus_space_tag_t iot = sc->sc_iot; 231 bus_space_handle_t ioh = sc->sc_ioh; 232 int spincount = 100000; /* 1s should be enough */ 233 234 while (--spincount) { 235 if ((bus_space_read_1(iot, ioh, U24_LINT) & U24_LDIP) == 0) 236 break; 237 delay(100); 238 } 239 if (!spincount) { 240 printf("%s: uha_start_mbox, board not responding\n", 241 sc->sc_dev.dv_xname); 242 Debugger(); 243 } 244 245 bus_space_write_4(iot, ioh, U24_OGMPTR, 246 mscp->dmamap_self->dm_segs[0].ds_addr); 247 if (mscp->flags & MSCP_ABORT) 248 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x80); 249 else 250 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x01); 251 bus_space_write_1(iot, ioh, U24_LINT, U24_OGMFULL); 252 253 if ((mscp->xs->flags & SCSI_POLL) == 0) 254 timeout(uha_timeout, mscp, (mscp->timeout * hz) / 1000); 255 } 256 257 int 258 u24_poll(sc, xs, count) 259 struct uha_softc *sc; 260 struct scsi_xfer *xs; 261 int count; 262 { 263 bus_space_tag_t iot = sc->sc_iot; 264 bus_space_handle_t ioh = sc->sc_ioh; 265 266 while (count) { 267 /* 268 * If we had interrupts enabled, would we 269 * have got an interrupt? 270 */ 271 if (bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) 272 u24_intr(sc); 273 if (xs->flags & ITSDONE) 274 return (0); 275 delay(1000); 276 count--; 277 } 278 return (1); 279 } 280 281 int 282 u24_intr(arg) 283 void *arg; 284 { 285 struct uha_softc *sc = arg; 286 bus_space_tag_t iot = sc->sc_iot; 287 bus_space_handle_t ioh = sc->sc_ioh; 288 struct uha_mscp *mscp; 289 u_char uhastat; 290 u_long mboxval; 291 292 #ifdef UHADEBUG 293 printf("%s: uhaintr ", sc->sc_dev.dv_xname); 294 #endif /*UHADEBUG */ 295 296 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0) 297 return (0); 298 299 for (;;) { 300 /* 301 * First get all the information and then 302 * acknowledge the interrupt 303 */ 304 uhastat = bus_space_read_1(iot, ioh, U24_SINT); 305 mboxval = bus_space_read_4(iot, ioh, U24_ICMPTR); 306 bus_space_write_1(iot, ioh, U24_SINT, U24_ICM_ACK); 307 bus_space_write_1(iot, ioh, U24_ICMCMD, 0); 308 309 #ifdef UHADEBUG 310 printf("status = 0x%x ", uhastat); 311 #endif /*UHADEBUG*/ 312 313 /* 314 * Process the completed operation 315 */ 316 mscp = uha_mscp_phys_kv(sc, mboxval); 317 if (!mscp) { 318 printf("%s: BAD MSCP RETURNED!\n", 319 sc->sc_dev.dv_xname); 320 continue; /* whatever it was, it'll timeout */ 321 } 322 untimeout(uha_timeout, mscp); 323 uha_done(sc, mscp); 324 325 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0) 326 return (1); 327 } 328 } 329 330 void 331 u24_init(sc) 332 struct uha_softc *sc; 333 { 334 bus_space_tag_t iot = sc->sc_iot; 335 bus_space_handle_t ioh = sc->sc_ioh; 336 337 /* free OGM and ICM */ 338 bus_space_write_1(iot, ioh, U24_OGMCMD, 0); 339 bus_space_write_1(iot, ioh, U24_ICMCMD, 0); 340 /* make sure interrupts are enabled */ 341 #ifdef UHADEBUG 342 printf("u24_init: lmask=%02x, smask=%02x\n", 343 bus_space_read_1(iot, ioh, U24_LMASK), 344 bus_space_read_1(iot, ioh, U24_SMASK)); 345 #endif 346 bus_space_write_1(iot, ioh, U24_LMASK, 0xd2); /* XXX */ 347 bus_space_write_1(iot, ioh, U24_SMASK, 0x92); /* XXX */ 348 } 349
Indexes created Wed Oct 22 13:09:56 GMT 2025