1 /* $OpenBSD: uha_eisa.c,v 1.12 2010/08/07 03:50:01 krw Exp $ */ 2 /* $NetBSD: uha_eisa.c,v 1.5 1996/10/21 22:31:07 thorpej Exp $ */ 3 4 /* 5 * Copyright (c) 1994, 1996 Charles M. Hannum. 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 Charles M. Hannum. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/types.h> 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/device.h> 37 #include <sys/kernel.h> 38 #include <sys/proc.h> 39 #include <uvm/uvm_extern.h> 40 41 #include <machine/bus.h> 42 #include <machine/intr.h> 43 44 #include <scsi/scsi_all.h> 45 #include <scsi/scsiconf.h> 46 47 #include <dev/eisa/eisavar.h> 48 #include <dev/eisa/eisadevs.h> 49 50 #include <dev/ic/uhareg.h> 51 #include <dev/ic/uhavar.h> 52 53 #define UHA_EISA_SLOT_OFFSET 0xc80 54 #define UHA_EISA_IOSIZE 0x020 55 56 int uha_eisa_match(struct device *, void *, void *); 57 void uha_eisa_attach(struct device *, struct device *, void *); 58 59 struct cfattach uha_eisa_ca = { 60 sizeof(struct uha_softc), uha_eisa_match, uha_eisa_attach 61 }; 62 63 #define KVTOPHYS(x) vtophys((vaddr_t)(x)) 64 65 int u24_find(bus_space_tag_t, bus_space_handle_t, struct uha_softc *); 66 void u24_start_mbox(struct uha_softc *, struct uha_mscp *); 67 int u24_poll(struct uha_softc *, struct scsi_xfer *, int); 68 int u24_intr(void *); 69 void u24_init(struct uha_softc *); 70 71 /* 72 * Check the slots looking for a board we recognise 73 * If we find one, note its address (slot) and call 74 * the actual probe routine to check it out. 75 */ 76 int 77 uha_eisa_match(parent, match, aux) 78 struct device *parent; 79 void *match, *aux; 80 { 81 struct eisa_attach_args *ea = aux; 82 bus_space_tag_t iot = ea->ea_iot; 83 bus_space_handle_t ioh; 84 int rv; 85 86 /* must match one of our known ID strings */ 87 if (strncmp(ea->ea_idstring, "USC024", 6)) 88 return (0); 89 90 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 91 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 92 return (0); 93 94 rv = u24_find(iot, ioh, NULL); 95 96 bus_space_unmap(iot, ioh, UHA_EISA_IOSIZE); 97 98 return (rv); 99 } 100 101 /* 102 * Attach all the sub-devices we can find 103 */ 104 void 105 uha_eisa_attach(parent, self, aux) 106 struct device *parent, *self; 107 void *aux; 108 { 109 struct eisa_attach_args *ea = aux; 110 struct uha_softc *sc = (void *)self; 111 bus_space_tag_t iot = ea->ea_iot; 112 bus_space_handle_t ioh; 113 eisa_chipset_tag_t ec = ea->ea_ec; 114 eisa_intr_handle_t ih; 115 const char *model, *intrstr; 116 117 if (!strncmp(ea->ea_idstring, "USC024", 6)) 118 model = EISA_PRODUCT_USC0240; 119 else 120 model = "unknown model!"; 121 printf(": %s\n", model); 122 123 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 124 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 125 panic("uha_attach: can't map I/O addresses"); 126 127 sc->sc_iot = iot; 128 sc->sc_ioh = ioh; 129 if (!u24_find(iot, ioh, sc)) 130 panic("uha_attach: u24_find failed!"); 131 132 if (eisa_intr_map(ec, sc->sc_irq, &ih)) { 133 printf("%s: couldn't map interrupt (%d)\n", 134 sc->sc_dev.dv_xname, sc->sc_irq); 135 return; 136 } 137 intrstr = eisa_intr_string(ec, ih); 138 sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 139 u24_intr, sc, sc->sc_dev.dv_xname); 140 if (sc->sc_ih == NULL) { 141 printf("%s: couldn't establish interrupt", 142 sc->sc_dev.dv_xname); 143 if (intrstr != NULL) 144 printf(" at %s", intrstr); 145 printf("\n"); 146 return; 147 } 148 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 149 150 /* Save function pointers for later use. */ 151 sc->start_mbox = u24_start_mbox; 152 sc->poll = u24_poll; 153 sc->init = u24_init; 154 155 uha_attach(sc); 156 } 157 158 int 159 u24_find(iot, ioh, sc) 160 bus_space_tag_t iot; 161 bus_space_handle_t ioh; 162 struct uha_softc *sc; 163 { 164 u_int8_t config0, config1, config2; 165 int irq, drq; 166 int resetcount = 4000; /* 4 secs? */ 167 168 config0 = bus_space_read_1(iot, ioh, U24_CONFIG + 0); 169 config1 = bus_space_read_1(iot, ioh, U24_CONFIG + 1); 170 config2 = bus_space_read_1(iot, ioh, U24_CONFIG + 2); 171 if ((config0 & U24_MAGIC1) == 0 || 172 (config1 & U24_MAGIC2) == 0) 173 return (0); 174 175 drq = -1; 176 177 switch (config0 & U24_IRQ_MASK) { 178 case U24_IRQ10: 179 irq = 10; 180 break; 181 case U24_IRQ11: 182 irq = 11; 183 break; 184 case U24_IRQ14: 185 irq = 14; 186 break; 187 case U24_IRQ15: 188 irq = 15; 189 break; 190 default: 191 printf("u24_find: illegal irq setting %x\n", 192 config0 & U24_IRQ_MASK); 193 return (0); 194 } 195 196 bus_space_write_1(iot, ioh, U24_LINT, UHA_ASRST); 197 198 while (--resetcount) { 199 if (bus_space_read_1(iot, ioh, U24_LINT)) 200 break; 201 delay(1000); /* 1 mSec per loop */ 202 } 203 if (!resetcount) { 204 printf("u24_find: board timed out during reset\n"); 205 return (0); 206 } 207 208 /* if we want to fill in softc, do so now */ 209 if (sc != NULL) { 210 sc->sc_irq = irq; 211 sc->sc_drq = drq; 212 sc->sc_scsi_dev = config2 & U24_HOSTID_MASK; 213 } 214 215 return (1); 216 } 217 218 void 219 u24_start_mbox(sc, mscp) 220 struct uha_softc *sc; 221 struct uha_mscp *mscp; 222 { 223 bus_space_tag_t iot = sc->sc_iot; 224 bus_space_handle_t ioh = sc->sc_ioh; 225 int spincount = 100000; /* 1s should be enough */ 226 227 while (--spincount) { 228 if ((bus_space_read_1(iot, ioh, U24_LINT) & U24_LDIP) == 0) 229 break; 230 delay(100); 231 } 232 if (!spincount) 233 panic("%s: uha_start_mbox, board not responding", 234 sc->sc_dev.dv_xname); 235 236 bus_space_write_4(iot, ioh, U24_OGMPTR, KVTOPHYS(mscp)); 237 if (mscp->flags & MSCP_ABORT) 238 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x80); 239 else 240 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x01); 241 bus_space_write_1(iot, ioh, U24_LINT, U24_OGMFULL); 242 243 if ((mscp->xs->flags & SCSI_POLL) == 0) 244 timeout_add_msec(&mscp->xs->stimeout, mscp->timeout); 245 } 246 247 int 248 u24_poll(sc, xs, count) 249 struct uha_softc *sc; 250 struct scsi_xfer *xs; 251 int count; 252 { 253 bus_space_tag_t iot = sc->sc_iot; 254 bus_space_handle_t ioh = sc->sc_ioh; 255 int s; 256 257 while (count) { 258 /* 259 * If we had interrupts enabled, would we 260 * have got an interrupt? 261 */ 262 if (bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) { 263 s = splbio(); 264 u24_intr(sc); 265 splx(s); 266 } 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 timeout_del(&mscp->xs->stimeout); 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