uha_eisa.c revision 1.22
1 /* $NetBSD: uha_eisa.c,v 1.22 2004/08/23 06:03:19 thorpej 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 1.22 2004/08/23 06:03:19 thorpej Exp $"); 41 42 #include "opt_ddb.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/device.h> 47 #include <sys/kernel.h> 48 #include <sys/proc.h> 49 #include <sys/user.h> 50 51 #include <machine/bus.h> 52 #include <machine/intr.h> 53 54 #include <dev/scsipi/scsi_all.h> 55 #include <dev/scsipi/scsipi_all.h> 56 #include <dev/scsipi/scsiconf.h> 57 58 #include <dev/eisa/eisavar.h> 59 #include <dev/eisa/eisadevs.h> 60 61 #include <dev/ic/uhareg.h> 62 #include <dev/ic/uhavar.h> 63 64 #define UHA_EISA_SLOT_OFFSET 0xc80 65 #define UHA_EISA_IOSIZE 0x020 66 67 static int uha_eisa_match(struct device *, struct cfdata *, void *); 68 static void uha_eisa_attach(struct device *, struct device *, void *); 69 70 CFATTACH_DECL(uha_eisa, sizeof(struct uha_softc), 71 uha_eisa_match, uha_eisa_attach, NULL, NULL); 72 73 #ifndef DDB 74 #define Debugger() panic("should call debugger here (uha_eisa.c)") 75 #endif /* ! DDB */ 76 77 static int u24_find(bus_space_tag_t, bus_space_handle_t, 78 struct uha_probe_data *); 79 static void u24_start_mbox(struct uha_softc *, struct uha_mscp *); 80 static int u24_poll(struct uha_softc *, struct scsipi_xfer *, int); 81 static int u24_intr(void *); 82 static void u24_init(struct uha_softc *); 83 84 /* 85 * Check the slots looking for a board we recognise 86 * If we find one, note it's address (slot) and call 87 * the actual probe routine to check it out. 88 */ 89 static int 90 uha_eisa_match(struct device *parent, struct cfdata *match, void *aux) 91 { 92 struct eisa_attach_args *ea = aux; 93 bus_space_tag_t iot = ea->ea_iot; 94 bus_space_handle_t ioh; 95 int rv; 96 97 /* must match one of our known ID strings */ 98 if (strncmp(ea->ea_idstring, "USC024", 6)) 99 return (0); 100 101 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 102 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 103 return (0); 104 105 rv = u24_find(iot, ioh, NULL); 106 107 bus_space_unmap(iot, ioh, UHA_EISA_IOSIZE); 108 109 return (rv); 110 } 111 112 /* 113 * Attach all the sub-devices we can find 114 */ 115 static void 116 uha_eisa_attach(struct device *parent, struct device *self, void *aux) 117 { 118 struct eisa_attach_args *ea = aux; 119 struct uha_softc *sc = (void *)self; 120 bus_space_tag_t iot = ea->ea_iot; 121 bus_dma_tag_t dmat = ea->ea_dmat; 122 bus_space_handle_t ioh; 123 struct uha_probe_data upd; 124 eisa_chipset_tag_t ec = ea->ea_ec; 125 eisa_intr_handle_t ih; 126 const char *model, *intrstr; 127 128 if (!strncmp(ea->ea_idstring, "USC024", 6)) 129 model = EISA_PRODUCT_USC0240; 130 else 131 model = "unknown model!"; 132 printf(": %s\n", model); 133 134 if (bus_space_map(iot, EISA_SLOT_ADDR(ea->ea_slot) + 135 UHA_EISA_SLOT_OFFSET, UHA_EISA_IOSIZE, 0, &ioh)) 136 panic("uha_eisa_attach: could not map I/O addresses"); 137 138 sc->sc_iot = iot; 139 sc->sc_ioh = ioh; 140 sc->sc_dmat = dmat; 141 if (!u24_find(iot, ioh, &upd)) 142 panic("uha_eisa_attach: u24_find failed!"); 143 144 sc->sc_dmaflags = 0; 145 146 if (eisa_intr_map(ec, upd.sc_irq, &ih)) { 147 printf("%s: couldn't map interrupt (%d)\n", 148 sc->sc_dev.dv_xname, upd.sc_irq); 149 return; 150 } 151 intrstr = eisa_intr_string(ec, ih); 152 sc->sc_ih = eisa_intr_establish(ec, ih, IST_LEVEL, IPL_BIO, 153 u24_intr, sc); 154 if (sc->sc_ih == NULL) { 155 printf("%s: couldn't establish interrupt", 156 sc->sc_dev.dv_xname); 157 if (intrstr != NULL) 158 printf(" at %s", intrstr); 159 printf("\n"); 160 return; 161 } 162 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 163 164 /* Save function pointers for later use. */ 165 sc->start_mbox = u24_start_mbox; 166 sc->poll = u24_poll; 167 sc->init = u24_init; 168 169 uha_attach(sc, &upd); 170 } 171 172 static int 173 u24_find(bus_space_tag_t iot, bus_space_handle_t ioh, struct uha_probe_data *sc) 174 { 175 u_int8_t config0, config1, config2; 176 int irq, drq; 177 int resetcount = 4000; /* 4 secs? */ 178 179 config0 = bus_space_read_1(iot, ioh, U24_CONFIG + 0); 180 config1 = bus_space_read_1(iot, ioh, U24_CONFIG + 1); 181 config2 = bus_space_read_1(iot, ioh, U24_CONFIG + 2); 182 if ((config0 & U24_MAGIC1) == 0 || 183 (config1 & U24_MAGIC2) == 0) 184 return (0); 185 186 drq = -1; 187 188 switch (config0 & U24_IRQ_MASK) { 189 case U24_IRQ10: 190 irq = 10; 191 break; 192 case U24_IRQ11: 193 irq = 11; 194 break; 195 case U24_IRQ14: 196 irq = 14; 197 break; 198 case U24_IRQ15: 199 irq = 15; 200 break; 201 default: 202 printf("u24_find: illegal irq setting %x\n", 203 config0 & U24_IRQ_MASK); 204 return (0); 205 } 206 207 bus_space_write_1(iot, ioh, U24_LINT, UHA_ASRST); 208 209 while (--resetcount) { 210 if (bus_space_read_1(iot, ioh, U24_LINT)) 211 break; 212 delay(1000); /* 1 mSec per loop */ 213 } 214 if (!resetcount) { 215 printf("u24_find: board timed out during reset\n"); 216 return (0); 217 } 218 219 /* if we want to fill in softc, do so now */ 220 if (sc) { 221 sc->sc_irq = irq; 222 sc->sc_drq = drq; 223 sc->sc_scsi_dev = config2 & U24_HOSTID_MASK; 224 } 225 226 return (1); 227 } 228 229 static void 230 u24_start_mbox(struct uha_softc *sc, struct uha_mscp *mscp) 231 { 232 bus_space_tag_t iot = sc->sc_iot; 233 bus_space_handle_t ioh = sc->sc_ioh; 234 int spincount = 100000; /* 1s should be enough */ 235 236 while (--spincount) { 237 if ((bus_space_read_1(iot, ioh, U24_LINT) & U24_LDIP) == 0) 238 break; 239 delay(100); 240 } 241 if (!spincount) { 242 printf("%s: uha_start_mbox, board not responding\n", 243 sc->sc_dev.dv_xname); 244 Debugger(); 245 } 246 247 bus_space_write_4(iot, ioh, U24_OGMPTR, 248 sc->sc_dmamap_mscp->dm_segs[0].ds_addr + UHA_MSCP_OFF(mscp)); 249 if (mscp->flags & MSCP_ABORT) 250 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x80); 251 else 252 bus_space_write_1(iot, ioh, U24_OGMCMD, 0x01); 253 bus_space_write_1(iot, ioh, U24_LINT, U24_OGMFULL); 254 255 if ((mscp->xs->xs_control & XS_CTL_POLL) == 0) 256 callout_reset(&mscp->xs->xs_callout, 257 mstohz(mscp->timeout), uha_timeout, mscp); 258 } 259 260 static int 261 u24_poll(struct uha_softc *sc, struct scsipi_xfer *xs, 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->xs_status & XS_STS_DONE) 274 return (0); 275 delay(1000); 276 count--; 277 } 278 return (1); 279 } 280 281 static int 282 u24_intr(void *arg) 283 { 284 struct uha_softc *sc = arg; 285 bus_space_tag_t iot = sc->sc_iot; 286 bus_space_handle_t ioh = sc->sc_ioh; 287 struct uha_mscp *mscp; 288 u_char uhastat; 289 u_long mboxval; 290 291 #ifdef UHADEBUG 292 printf("%s: uhaintr ", sc->sc_dev.dv_xname); 293 #endif /*UHADEBUG */ 294 295 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0) 296 return (0); 297 298 for (;;) { 299 /* 300 * First get all the information and then 301 * acknowledge the interrupt 302 */ 303 uhastat = bus_space_read_1(iot, ioh, U24_SINT); 304 mboxval = bus_space_read_4(iot, ioh, U24_ICMPTR); 305 bus_space_write_1(iot, ioh, U24_SINT, U24_ICM_ACK); 306 bus_space_write_1(iot, ioh, U24_ICMCMD, 0); 307 308 #ifdef UHADEBUG 309 printf("status = 0x%x ", uhastat); 310 #endif /*UHADEBUG*/ 311 312 /* 313 * Process the completed operation 314 */ 315 mscp = uha_mscp_phys_kv(sc, mboxval); 316 if (!mscp) { 317 printf("%s: BAD MSCP RETURNED!\n", 318 sc->sc_dev.dv_xname); 319 continue; /* whatever it was, it'll timeout */ 320 } 321 callout_stop(&mscp->xs->xs_callout); 322 uha_done(sc, mscp); 323 324 if ((bus_space_read_1(iot, ioh, U24_SINT) & U24_SDIP) == 0) 325 return (1); 326 } 327 } 328 329 static void 330 u24_init(struct uha_softc *sc) 331 { 332 bus_space_tag_t iot = sc->sc_iot; 333 bus_space_handle_t ioh = sc->sc_ioh; 334 335 /* free OGM and ICM */ 336 bus_space_write_1(iot, ioh, U24_OGMCMD, 0); 337 bus_space_write_1(iot, ioh, U24_ICMCMD, 0); 338 /* make sure interrupts are enabled */ 339 #ifdef UHADEBUG 340 printf("u24_init: lmask=%02x, smask=%02x\n", 341 bus_space_read_1(iot, ioh, U24_LMASK), 342 bus_space_read_1(iot, ioh, U24_SMASK)); 343 #endif 344 bus_space_write_1(iot, ioh, U24_LMASK, 0xd2); /* XXX */ 345 bus_space_write_1(iot, ioh, U24_SMASK, 0x92); /* XXX */ 346 } 347
Indexes created Mon Sep 29 03:10:08 GMT 2025