uha_eisa.c revision 1.16
1 /* $NetBSD: uha_eisa.c,v 1.16 2001/11/13 12:47:33 lukem Exp $ */ 2 3 /*- 4 * Copyright (c) 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Charles M. Hannum. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: uha_eisa.c,v 1.16 2001/11/13 12:47:33 lukem Exp $"); 41 42 #include "opt_ddb.h" 43 44 #include <sys/types.h> 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/device.h> 48 #include <sys/kernel.h> 49 #include <sys/proc.h> 50 #include <sys/user.h> 51 52 #include <machine/bus.h> 53 #include <machine/intr.h> 54 55 #include <dev/scsipi/scsi_all.h> 56 #include <dev/scsipi/scsipi_all.h> 57 #include <dev/scsipi/scsiconf.h> 58 59 #include <dev/eisa/eisavar.h> 60 #include <dev/eisa/eisadevs.h> 61 62 #include <dev/ic/uhareg.h> 63 #include <dev/ic/uhavar.h> 64 65 #define UHA_EISA_SLOT_OFFSET 0xc80 66 #define UHA_EISA_IOSIZE 0x020 67 68 int uha_eisa_match __P((struct device *, struct cfdata *, void *)); 69 void uha_eisa_attach __P((struct device *, struct device *, void *)); 70 71 struct cfattach uha_eisa_ca = { 72 sizeof(struct uha_softc), uha_eisa_match, uha_eisa_attach 73 }; 74 75 #ifndef DDB 76 #define Debugger() panic("should call debugger here (uha_eisa.c)") 77 #endif /* ! DDB */ 78 79 int u24_find __P((bus_space_tag_t, bus_space_handle_t, 80 struct uha_probe_data *)); 81 void u24_start_mbox __P((struct uha_softc *, struct uha_mscp *)); 82 int u24_poll __P((struct uha_softc *, struct scsipi_xfer *, int)); 83 int u24_intr __P((void *)); 84 void u24_init __P((struct uha_softc *)); 85 86 /* 87 * Check the slots looking for a board we recognise 88 * If we find one, note it's address (slot) and call 89 * the actual probe routine to check it out. 90 */ 91 int 92 uha_eisa_match(parent, match, aux) 93 struct device *parent; 94 struct cfdata *match; 95 void *aux; 96 { 97 struct eisa_attach_args *ea = aux; 98 bus_space_tag_t iot = ea->ea_iot; 99 bus_space_handle_t ioh; 100 int rv; 101 102 /* must match one of our known ID strings */ 103 if (strncmp(ea->ea_idstring, "USC024", 6)) 104 return (0); 105 106 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 107 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 108 return (0); 109 110 rv = u24_find(iot, ioh, NULL); 111 112 bus_space_unmap(iot, ioh, UHA_EISA_IOSIZE); 113 114 return (rv); 115 } 116 117 /* 118 * Attach all the sub-devices we can find 119 */ 120 void 121 uha_eisa_attach(parent, self, aux) 122 struct device *parent, *self; 123 void *aux; 124 { 125 struct eisa_attach_args *ea = aux; 126 struct uha_softc *sc = (void *)self; 127 bus_space_tag_t iot = ea->ea_iot; 128 bus_dma_tag_t dmat = ea->ea_dmat; 129 bus_space_handle_t ioh; 130 struct uha_probe_data upd; 131 eisa_chipset_tag_t ec = ea->ea_ec; 132 eisa_intr_handle_t ih; 133 const char *model, *intrstr; 134 135 if (!strncmp(ea->ea_idstring, "USC024", 6)) 136 model = EISA_PRODUCT_USC0240; 137 else 138 model = "unknown model!"; 139 printf(": %s\n", model); 140 141 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 142 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 143 panic("uha_eisa_attach: could not map I/O addresses"); 144 145 sc->sc_iot = iot; 146 sc->sc_ioh = ioh; 147 sc->sc_dmat = dmat; 148 if (!u24_find(iot, ioh, &upd)) 149 panic("uha_eisa_attach: u24_find failed!"); 150 151 sc->sc_dmaflags = 0; 152 153 if (eisa_intr_map(ec, upd.sc_irq, &ih)) { 154 printf("%s: couldn't map interrupt (%d)\n", 155 sc->sc_dev.dv_xname, upd.sc_irq); 156 return; 157 } 158 intrstr = eisa_intr_string(ec, ih); 159 sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 160 u24_intr, sc); 161 if (sc->sc_ih == NULL) { 162 printf("%s: couldn't establish interrupt", 163 sc->sc_dev.dv_xname); 164 if (intrstr != NULL) 165 printf(" at %s", intrstr); 166 printf("\n"); 167 return; 168 } 169 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 170 171 /* Save function pointers for later use. */ 172 sc->start_mbox = u24_start_mbox; 173 sc->poll = u24_poll; 174 sc->init = u24_init; 175 176 uha_attach(sc, &upd); 177 } 178 179 int 180 u24_find(iot, ioh, sc) 181 bus_space_tag_t iot; 182 bus_space_handle_t ioh; 183 struct uha_probe_data *sc; 184 { 185 u_int8_t config0, config1, config2; 186 int irq, drq; 187 int resetcount = 4000; /* 4 secs? */ 188 189 config0 = bus_space_read_1(iot, ioh, U24_CONFIG + 0); 190 config1 = bus_space_read_1(iot, ioh, U24_CONFIG + 1); 191 config2 = bus_space_read_1(iot, ioh, U24_CONFIG + 2); 192 if ((config0 & U24_MAGIC1) == 0 || 193 (config1 & U24_MAGIC2) == 0) 194 return (0); 195 196 drq = -1; 197 198 switch (config0 & U24_IRQ_MASK) { 199 case U24_IRQ10: 200 irq = 10; 201 break; 202 case U24_IRQ11: 203 irq = 11; 204 break; 205 case U24_IRQ14: 206 irq = 14; 207 break; 208 case U24_IRQ15: 209 irq = 15; 210 break; 211 default: 212 printf("u24_find: illegal irq setting %x\n", 213 config0 & U24_IRQ_MASK); 214 return (0); 215 } 216 217 bus_space_write_1(iot, ioh, U24_LINT, UHA_ASRST); 218 219 while (--resetcount) { 220 if (bus_space_read_1(iot, ioh, U24_LINT)) 221 break; 222 delay(1000); /* 1 mSec per loop */ 223 } 224 if (!resetcount) { 225 printf("u24_find: board timed out during reset\n"); 226 return (0); 227 } 228 229 /* if we want to fill in softc, do so now */ 230 if (sc) { 231 sc->sc_irq = irq; 232 sc->sc_drq = drq; 233 sc->sc_scsi_dev = config2 & U24_HOSTID_MASK; 234 } 235 236 return (1); 237 } 238 239 void 240 u24_start_mbox(sc, mscp) 241 struct uha_softc *sc; 242 struct uha_mscp *mscp; 243 { 244 bus_space_tag_t iot = sc->sc_iot; 245 bus_space_handle_t ioh = sc->sc_ioh; 246 int spincount = 100000; /* 1s should be enough */ 247 248 while (--spincount) { 249 if ((bus_space_read_1(iot, ioh, U24_LINT) & U24_LDIP) == 0) 250 break; 251 delay(100); 252 } 253 if (!spincount) { 254 printf("%s: uha_start_mbox, board not responding\n", 255 sc->sc_dev.dv_xname); 256 Debugger(); 257 } 258 259 bus_space_write_4(iot, ioh, U24_OGMPTR, 260 sc->sc_dmamap_mscp->dm_segs[0].ds_addr + UHA_MSCP_OFF(mscp)); 261 if (mscp->flags & MSCP_ABORT) 262 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x80); 263 else 264 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x01); 265 bus_space_write_1(iot, ioh, U24_LINT, U24_OGMFULL); 266 267 if ((mscp->xs->xs_control & XS_CTL_POLL) == 0) 268 callout_reset(&mscp->xs->xs_callout, 269 (mscp->timeout * hz) / 1000, uha_timeout, mscp); 270 } 271 272 int 273 u24_poll(sc, xs, count) 274 struct uha_softc *sc; 275 struct scsipi_xfer *xs; 276 int count; 277 { 278 bus_space_tag_t iot = sc->sc_iot; 279 bus_space_handle_t ioh = sc->sc_ioh; 280 281 while (count) { 282 /* 283 * If we had interrupts enabled, would we 284 * have got an interrupt? 285 */ 286 if (bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) 287 u24_intr(sc); 288 if (xs->xs_status & XS_STS_DONE) 289 return (0); 290 delay(1000); 291 count--; 292 } 293 return (1); 294 } 295 296 int 297 u24_intr(arg) 298 void *arg; 299 { 300 struct uha_softc *sc = arg; 301 bus_space_tag_t iot = sc->sc_iot; 302 bus_space_handle_t ioh = sc->sc_ioh; 303 struct uha_mscp *mscp; 304 u_char uhastat; 305 u_long mboxval; 306 307 #ifdef UHADEBUG 308 printf("%s: uhaintr ", sc->sc_dev.dv_xname); 309 #endif /*UHADEBUG */ 310 311 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0) 312 return (0); 313 314 for (;;) { 315 /* 316 * First get all the information and then 317 * acknowledge the interrupt 318 */ 319 uhastat = bus_space_read_1(iot, ioh, U24_SINT); 320 mboxval = bus_space_read_4(iot, ioh, U24_ICMPTR); 321 bus_space_write_1(iot, ioh, U24_SINT, U24_ICM_ACK); 322 bus_space_write_1(iot, ioh, U24_ICMCMD, 0); 323 324 #ifdef UHADEBUG 325 printf("status = 0x%x ", uhastat); 326 #endif /*UHADEBUG*/ 327 328 /* 329 * Process the completed operation 330 */ 331 mscp = uha_mscp_phys_kv(sc, mboxval); 332 if (!mscp) { 333 printf("%s: BAD MSCP RETURNED!\n", 334 sc->sc_dev.dv_xname); 335 continue; /* whatever it was, it'll timeout */ 336 } 337 callout_stop(&mscp->xs->xs_callout); 338 uha_done(sc, mscp); 339 340 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0) 341 return (1); 342 } 343 } 344 345 void 346 u24_init(sc) 347 struct uha_softc *sc; 348 { 349 bus_space_tag_t iot = sc->sc_iot; 350 bus_space_handle_t ioh = sc->sc_ioh; 351 352 /* free OGM and ICM */ 353 bus_space_write_1(iot, ioh, U24_OGMCMD, 0); 354 bus_space_write_1(iot, ioh, U24_ICMCMD, 0); 355 /* make sure interrupts are enabled */ 356 #ifdef UHADEBUG 357 printf("u24_init: lmask=%02x, smask=%02x\n", 358 bus_space_read_1(iot, ioh, U24_LMASK), 359 bus_space_read_1(iot, ioh, U24_SMASK)); 360 #endif 361 bus_space_write_1(iot, ioh, U24_LMASK, 0xd2); /* XXX */ 362 bus_space_write_1(iot, ioh, U24_SMASK, 0x92); /* XXX */ 363 } 364
Indexes created Mon Sep 29 21:09:56 GMT 2025