1 /* $OpenBSD: uha_eisa.c,v 1.14 2017/09/08 05:36:52 deraadt 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/param.h> 34 #include <sys/systm.h> 35 #include <sys/device.h> 36 #include <sys/kernel.h> 37 #include <uvm/uvm_extern.h> 38 39 #include <machine/bus.h> 40 #include <machine/intr.h> 41 42 #include <scsi/scsi_all.h> 43 #include <scsi/scsiconf.h> 44 45 #include <dev/eisa/eisavar.h> 46 #include <dev/eisa/eisadevs.h> 47 48 #include <dev/ic/uhareg.h> 49 #include <dev/ic/uhavar.h> 50 51 #define UHA_EISA_SLOT_OFFSET 0xc80 52 #define UHA_EISA_IOSIZE 0x020 53 54 int uha_eisa_match(struct device *, void *, void *); 55 void uha_eisa_attach(struct device *, struct device *, void *); 56 57 struct cfattach uha_eisa_ca = { 58 sizeof(struct uha_softc), uha_eisa_match, uha_eisa_attach 59 }; 60 61 #define KVTOPHYS(x) vtophys((vaddr_t)(x)) 62 63 int u24_find(bus_space_tag_t, bus_space_handle_t, struct uha_softc *); 64 void u24_start_mbox(struct uha_softc *, struct uha_mscp *); 65 int u24_poll(struct uha_softc *, struct scsi_xfer *, int); 66 int u24_intr(void *); 67 void u24_init(struct uha_softc *); 68 69 /* 70 * Check the slots looking for a board we recognise 71 * If we find one, note its address (slot) and call 72 * the actual probe routine to check it out. 73 */ 74 int 75 uha_eisa_match(parent, match, aux) 76 struct device *parent; 77 void *match, *aux; 78 { 79 struct eisa_attach_args *ea = aux; 80 bus_space_tag_t iot = ea->ea_iot; 81 bus_space_handle_t ioh; 82 int rv; 83 84 /* must match one of our known ID strings */ 85 if (strncmp(ea->ea_idstring, "USC024", 6)) 86 return (0); 87 88 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 89 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 90 return (0); 91 92 rv = u24_find(iot, ioh, NULL); 93 94 bus_space_unmap(iot, ioh, UHA_EISA_IOSIZE); 95 96 return (rv); 97 } 98 99 /* 100 * Attach all the sub-devices we can find 101 */ 102 void 103 uha_eisa_attach(parent, self, aux) 104 struct device *parent, *self; 105 void *aux; 106 { 107 struct eisa_attach_args *ea = aux; 108 struct uha_softc *sc = (void *)self; 109 bus_space_tag_t iot = ea->ea_iot; 110 bus_space_handle_t ioh; 111 eisa_chipset_tag_t ec = ea->ea_ec; 112 eisa_intr_handle_t ih; 113 const char *model, *intrstr; 114 115 if (!strncmp(ea->ea_idstring, "USC024", 6)) 116 model = EISA_PRODUCT_USC0240; 117 else 118 model = "unknown model!"; 119 printf(": %s\n", model); 120 121 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 122 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 123 panic("uha_attach: can't map I/O addresses"); 124 125 sc->sc_iot = iot; 126 sc->sc_ioh = ioh; 127 if (!u24_find(iot, ioh, sc)) 128 panic("uha_attach: u24_find failed!"); 129 130 if (eisa_intr_map(ec, sc->sc_irq, &ih)) { 131 printf("%s: couldn't map interrupt (%d)\n", 132 sc->sc_dev.dv_xname, sc->sc_irq); 133 return; 134 } 135 intrstr = eisa_intr_string(ec, ih); 136 sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 137 u24_intr, sc, sc->sc_dev.dv_xname); 138 if (sc->sc_ih == NULL) { 139 printf("%s: couldn't establish interrupt", 140 sc->sc_dev.dv_xname); 141 if (intrstr != NULL) 142 printf(" at %s", intrstr); 143 printf("\n"); 144 return; 145 } 146 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 147 148 /* Save function pointers for later use. */ 149 sc->start_mbox = u24_start_mbox; 150 sc->poll = u24_poll; 151 sc->init = u24_init; 152 153 uha_attach(sc); 154 } 155 156 int 157 u24_find(iot, ioh, sc) 158 bus_space_tag_t iot; 159 bus_space_handle_t ioh; 160 struct uha_softc *sc; 161 { 162 u_int8_t config0, config1, config2; 163 int irq, drq; 164 int resetcount = 4000; /* 4 secs? */ 165 166 config0 = bus_space_read_1(iot, ioh, U24_CONFIG + 0); 167 config1 = bus_space_read_1(iot, ioh, U24_CONFIG + 1); 168 config2 = bus_space_read_1(iot, ioh, U24_CONFIG + 2); 169 if ((config0 & U24_MAGIC1) == 0 || 170 (config1 & U24_MAGIC2) == 0) 171 return (0); 172 173 drq = -1; 174 175 switch (config0 & U24_IRQ_MASK) { 176 case U24_IRQ10: 177 irq = 10; 178 break; 179 case U24_IRQ11: 180 irq = 11; 181 break; 182 case U24_IRQ14: 183 irq = 14; 184 break; 185 case U24_IRQ15: 186 irq = 15; 187 break; 188 default: 189 printf("u24_find: illegal irq setting %x\n", 190 config0 & U24_IRQ_MASK); 191 return (0); 192 } 193 194 bus_space_write_1(iot, ioh, U24_LINT, UHA_ASRST); 195 196 while (--resetcount) { 197 if (bus_space_read_1(iot, ioh, U24_LINT)) 198 break; 199 delay(1000); /* 1 mSec per loop */ 200 } 201 if (!resetcount) { 202 printf("u24_find: board timed out during reset\n"); 203 return (0); 204 } 205 206 /* if we want to fill in softc, do so now */ 207 if (sc != NULL) { 208 sc->sc_irq = irq; 209 sc->sc_drq = drq; 210 sc->sc_scsi_dev = config2 & U24_HOSTID_MASK; 211 } 212 213 return (1); 214 } 215 216 void 217 u24_start_mbox(sc, mscp) 218 struct uha_softc *sc; 219 struct uha_mscp *mscp; 220 { 221 bus_space_tag_t iot = sc->sc_iot; 222 bus_space_handle_t ioh = sc->sc_ioh; 223 int spincount = 100000; /* 1s should be enough */ 224 225 while (--spincount) { 226 if ((bus_space_read_1(iot, ioh, U24_LINT) & U24_LDIP) == 0) 227 break; 228 delay(100); 229 } 230 if (!spincount) 231 panic("%s: uha_start_mbox, board not responding", 232 sc->sc_dev.dv_xname); 233 234 bus_space_write_4(iot, ioh, U24_OGMPTR, KVTOPHYS(mscp)); 235 if (mscp->flags & MSCP_ABORT) 236 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x80); 237 else 238 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x01); 239 bus_space_write_1(iot, ioh, U24_LINT, U24_OGMFULL); 240 241 if ((mscp->xs->flags & SCSI_POLL) == 0) 242 timeout_add_msec(&mscp->xs->stimeout, mscp->timeout); 243 } 244 245 int 246 u24_poll(sc, xs, count) 247 struct uha_softc *sc; 248 struct scsi_xfer *xs; 249 int count; 250 { 251 bus_space_tag_t iot = sc->sc_iot; 252 bus_space_handle_t ioh = sc->sc_ioh; 253 int s; 254 255 while (count) { 256 /* 257 * If we had interrupts enabled, would we 258 * have got an interrupt? 259 */ 260 if (bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) { 261 s = splbio(); 262 u24_intr(sc); 263 splx(s); 264 } 265 if (xs->flags & ITSDONE) 266 return (0); 267 delay(1000); 268 count--; 269 } 270 return (1); 271 } 272 273 int 274 u24_intr(arg) 275 void *arg; 276 { 277 struct uha_softc *sc = arg; 278 bus_space_tag_t iot = sc->sc_iot; 279 bus_space_handle_t ioh = sc->sc_ioh; 280 struct uha_mscp *mscp; 281 u_char uhastat; 282 u_long mboxval; 283 284 #ifdef UHADEBUG 285 printf("%s: uhaintr ", sc->sc_dev.dv_xname); 286 #endif /*UHADEBUG */ 287 288 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0) 289 return (0); 290 291 for (;;) { 292 /* 293 * First get all the information and then 294 * acknowledge the interrupt 295 */ 296 uhastat = bus_space_read_1(iot, ioh, U24_SINT); 297 mboxval = bus_space_read_4(iot, ioh, U24_ICMPTR); 298 bus_space_write_1(iot, ioh, U24_SINT, U24_ICM_ACK); 299 bus_space_write_1(iot, ioh, U24_ICMCMD, 0); 300 301 #ifdef UHADEBUG 302 printf("status = 0x%x ", uhastat); 303 #endif /*UHADEBUG*/ 304 305 /* 306 * Process the completed operation 307 */ 308 mscp = uha_mscp_phys_kv(sc, mboxval); 309 if (!mscp) { 310 printf("%s: BAD MSCP RETURNED!\n", 311 sc->sc_dev.dv_xname); 312 continue; /* whatever it was, it'll timeout */ 313 } 314 timeout_del(&mscp->xs->stimeout); 315 uha_done(sc, mscp); 316 317 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0) 318 return (1); 319 } 320 } 321 322 void 323 u24_init(sc) 324 struct uha_softc *sc; 325 { 326 bus_space_tag_t iot = sc->sc_iot; 327 bus_space_handle_t ioh = sc->sc_ioh; 328 329 /* free OGM and ICM */ 330 bus_space_write_1(iot, ioh, U24_OGMCMD, 0); 331 bus_space_write_1(iot, ioh, U24_ICMCMD, 0); 332 /* make sure interrupts are enabled */ 333 #ifdef UHADEBUG 334 printf("u24_init: lmask=%02x, smask=%02x\n", 335 bus_space_read_1(iot, ioh, U24_LMASK), 336 bus_space_read_1(iot, ioh, U24_SMASK)); 337 #endif 338 bus_space_write_1(iot, ioh, U24_LMASK, 0xd2); /* XXX */ 339 bus_space_write_1(iot, ioh, U24_SMASK, 0x92); /* XXX */ 340 } 341