uha_eisa.c revision 1.5
1/* $OpenBSD: uha_eisa.c,v 1.5 2005/11/23 11:30:14 mickey 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 <sys/user.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#ifndef DDB 57#define Debugger() panic("should call debugger here (uha_eisa.c)") 58#endif 59 60int uha_eisa_match(struct device *, void *, void *); 61void uha_eisa_attach(struct device *, struct device *, void *); 62 63struct cfattach uha_eisa_ca = { 64 sizeof(struct uha_softc), uha_eisa_match, uha_eisa_attach 65}; 66 67#define KVTOPHYS(x) vtophys((vaddr_t)(x)) 68 69int u24_find(bus_space_tag_t, bus_space_handle_t, struct uha_softc *); 70void u24_start_mbox(struct uha_softc *, struct uha_mscp *); 71int u24_poll(struct uha_softc *, struct scsi_xfer *, int); 72int u24_intr(void *); 73void u24_init(struct uha_softc *); 74 75/* 76 * Check the slots looking for a board we recognise 77 * If we find one, note it's address (slot) and call 78 * the actual probe routine to check it out. 79 */ 80int 81uha_eisa_match(parent, match, aux) 82 struct device *parent; 83 void *match, *aux; 84{ 85 struct eisa_attach_args *ea = aux; 86 bus_space_tag_t iot = ea->ea_iot; 87 bus_space_handle_t ioh; 88 int rv; 89 90 /* must match one of our known ID strings */ 91 if (strncmp(ea->ea_idstring, "USC024", 6)) 92 return (0); 93 94 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 95 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 96 return (0); 97 98 rv = u24_find(iot, ioh, NULL); 99 100 bus_space_unmap(iot, ioh, UHA_EISA_IOSIZE); 101 102 return (rv); 103} 104 105/* 106 * Attach all the sub-devices we can find 107 */ 108void 109uha_eisa_attach(parent, self, aux) 110 struct device *parent, *self; 111 void *aux; 112{ 113 struct eisa_attach_args *ea = aux; 114 struct uha_softc *sc = (void *)self; 115 bus_space_tag_t iot = ea->ea_iot; 116 bus_space_handle_t ioh; 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_attach: could not map I/O addresses"); 130 131 sc->sc_iot = iot; 132 sc->sc_ioh = ioh; 133 if (!u24_find(iot, ioh, sc)) 134 panic("uha_attach: u24_find failed!"); 135 136 if (eisa_intr_map(ec, sc->sc_irq, &ih)) { 137 printf("%s: couldn't map interrupt (%d)\n", 138 sc->sc_dev.dv_xname, sc->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, sc->sc_dev.dv_xname); 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); 160} 161 162int 163u24_find(iot, ioh, sc) 164 bus_space_tag_t iot; 165 bus_space_handle_t ioh; 166 struct uha_softc *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 != NULL) { 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 222void 223u24_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_add(&mscp->xs->stimeout, (mscp->timeout * hz) / 1000); 251} 252 253int 254u24_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 277int 278u24_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 timeout_del(&mscp->xs->stimeout); 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 326void 327u24_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