csc.c revision 1.12
1 /* $NetBSD: csc.c,v 1.12 2003/07/14 22:48:26 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 Scott Stevens. 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 /* 40 * Cumana SCSI-2 driver uses the SFAS216 generic driver 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: csc.c,v 1.12 2003/07/14 22:48:26 lukem Exp $"); 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/device.h> 50 51 #include <uvm/uvm_extern.h> 52 53 #include <dev/scsipi/scsi_all.h> 54 #include <dev/scsipi/scsipi_all.h> 55 #include <dev/scsipi/scsiconf.h> 56 #include <machine/io.h> 57 #include <machine/intr.h> 58 #include <machine/bootconfig.h> 59 #include <acorn32/podulebus/podulebus.h> 60 #include <acorn32/podulebus/sfasreg.h> 61 #include <acorn32/podulebus/sfasvar.h> 62 #include <acorn32/podulebus/cscreg.h> 63 #include <acorn32/podulebus/cscvar.h> 64 #include <dev/podulebus/podules.h> 65 #include <dev/podulebus/powerromreg.h> 66 67 int cscmatch(struct device *, struct cfdata *, void *); 68 void cscattach(struct device *, struct device *, void *); 69 70 CFATTACH_DECL(csc, sizeof(struct csc_softc), 71 cscmatch, cscattach, NULL, NULL); 72 73 int csc_intr(void *); 74 int csc_setup_dma(void *, void *, int, int); 75 int csc_build_dma_chain(void *, void *, void *, int); 76 int csc_need_bump(void *, void *, int); 77 void csc_led(void *, int); 78 79 void csc_set_dma_adr(struct sfas_softc *, void *); 80 void csc_set_dma_tc(struct sfas_softc *, unsigned int); 81 void csc_set_dma_mode(struct sfas_softc *, int); 82 83 /* 84 * if we are a Cumana SCSI-2 card 85 */ 86 int 87 cscmatch(pdp, cf, auxp) 88 struct device *pdp; 89 struct cfdata *cf; 90 void *auxp; 91 { 92 struct podule_attach_args *pa = (struct podule_attach_args *)auxp; 93 94 /* Look for the card */ 95 if (pa->pa_product == PODULE_CUMANA_SCSI2) 96 return 1; 97 98 /* PowerROM */ 99 if (pa->pa_product == PODULE_ALSYSTEMS_SCSI && 100 podulebus_initloader(pa) == 0 && 101 podloader_callloader(pa, 0, 0) == PRID_CUMANA_SCSI2) 102 return 1; 103 104 return 0; 105 } 106 107 void 108 cscattach(pdp, dp, auxp) 109 struct device *pdp; 110 struct device *dp; 111 void *auxp; 112 { 113 struct csc_softc *sc = (struct csc_softc *)dp; 114 struct podule_attach_args *pa; 115 csc_regmap_p rp = &sc->sc_regmap; 116 vu_char *fas; 117 int loop; 118 119 pa = (struct podule_attach_args *)auxp; 120 121 if (pa->pa_podule_number == -1) 122 panic("Podule has disappeared !"); 123 124 sc->sc_specific.sc_podule_number = pa->pa_podule_number; 125 sc->sc_specific.sc_podule = pa->pa_podule; 126 sc->sc_specific.sc_iobase = 127 (vu_char *)sc->sc_specific.sc_podule->mod_base; 128 129 rp->status0 = &sc->sc_specific.sc_iobase[CSC_STATUS0]; 130 rp->alatch = &sc->sc_specific.sc_iobase[CSC_ALATCH]; 131 rp->dack = (vu_short *)&sc->sc_specific.sc_iobase[CSC_DACK]; 132 fas = &sc->sc_specific.sc_iobase[CSC_FAS_OFFSET_BASE]; 133 134 rp->FAS216.sfas_tc_low = &fas[CSC_FAS_OFFSET_TCL]; 135 rp->FAS216.sfas_tc_mid = &fas[CSC_FAS_OFFSET_TCM]; 136 rp->FAS216.sfas_fifo = &fas[CSC_FAS_OFFSET_FIFO]; 137 rp->FAS216.sfas_command = &fas[CSC_FAS_OFFSET_COMMAND]; 138 rp->FAS216.sfas_dest_id = &fas[CSC_FAS_OFFSET_DESTID]; 139 rp->FAS216.sfas_timeout = &fas[CSC_FAS_OFFSET_TIMEOUT]; 140 rp->FAS216.sfas_syncper = &fas[CSC_FAS_OFFSET_PERIOD]; 141 rp->FAS216.sfas_syncoff = &fas[CSC_FAS_OFFSET_OFFSET]; 142 rp->FAS216.sfas_config1 = &fas[CSC_FAS_OFFSET_CONFIG1]; 143 rp->FAS216.sfas_clkconv = &fas[CSC_FAS_OFFSET_CLKCONV]; 144 rp->FAS216.sfas_test = &fas[CSC_FAS_OFFSET_TEST]; 145 rp->FAS216.sfas_config2 = &fas[CSC_FAS_OFFSET_CONFIG2]; 146 rp->FAS216.sfas_config3 = &fas[CSC_FAS_OFFSET_CONFIG3]; 147 rp->FAS216.sfas_tc_high = &fas[CSC_FAS_OFFSET_TCH]; 148 rp->FAS216.sfas_fifo_bot = &fas[CSC_FAS_OFFSET_FIFOBOT]; 149 150 sc->sc_softc.sc_fas = (sfas_regmap_p)rp; 151 sc->sc_softc.sc_spec = &sc->sc_specific; 152 153 sc->sc_softc.sc_led = csc_led; 154 155 sc->sc_softc.sc_setup_dma = csc_setup_dma; 156 sc->sc_softc.sc_build_dma_chain = csc_build_dma_chain; 157 sc->sc_softc.sc_need_bump = csc_need_bump; 158 159 sc->sc_softc.sc_clock_freq = 8; /* Cumana runs at 8MHz */ 160 sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */ 161 sc->sc_softc.sc_config_flags = SFAS_NO_DMA /*| SFAS_NF_DEBUG*/; 162 sc->sc_softc.sc_host_id = 7; /* Should check the jumpers */ 163 164 sc->sc_softc.sc_bump_sz = PAGE_SIZE; 165 sc->sc_softc.sc_bump_pa = 0x0; 166 167 sfasinitialize((struct sfas_softc *)sc); 168 169 sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev; 170 sc->sc_softc.sc_adapter.adapt_nchannels = 1; 171 sc->sc_softc.sc_adapter.adapt_openings = 7; 172 sc->sc_softc.sc_adapter.adapt_max_periph = 1; 173 sc->sc_softc.sc_adapter.adapt_ioctl = NULL; 174 sc->sc_softc.sc_adapter.adapt_minphys = sfas_minphys; 175 sc->sc_softc.sc_adapter.adapt_request = sfas_scsi_request; 176 177 sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter; 178 sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype; 179 sc->sc_softc.sc_channel.chan_channel = 0; 180 sc->sc_softc.sc_channel.chan_ntargets = 8; 181 sc->sc_softc.sc_channel.chan_nluns = 8; 182 sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id; 183 184 /* Provide an override for the host id */ 185 (void)get_bootconf_option(boot_args, "csc.hostid", 186 BOOTOPT_TYPE_INT, &sc->sc_softc.sc_channel.chan_id); 187 188 printf(": host=%d", sc->sc_softc.sc_channel.chan_id); 189 190 /* initialise the alatch */ 191 sc->sc_specific.sc_alatch_defs = (CSC_POLL?0:CSC_ALATCH_DEFS_INTEN); 192 for (loop = 0; loop < 8; loop ++) { 193 if(loop != 3) 194 *rp->alatch = (loop << 1) | 195 ((sc->sc_specific.sc_alatch_defs & (1 << loop))?1:0); 196 } 197 198 #if CSC_POLL == 0 199 evcnt_attach_dynamic(&sc->sc_softc.sc_intrcnt, EVCNT_TYPE_INTR, NULL, 200 dp->dv_xname, "intr"); 201 sc->sc_softc.sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, 202 csc_intr, &sc->sc_softc, &sc->sc_softc.sc_intrcnt); 203 if (sc->sc_softc.sc_ih == NULL) 204 panic("%s: Cannot install IRQ handler", dp->dv_xname); 205 #else 206 printf(" polling"); 207 sc->sc_softc.sc_adapter.adapt_flags |= SCSIPI_ADAPT_POLL_ONLY; 208 #endif 209 printf("\n"); 210 211 /* attach all scsi units on us */ 212 config_found(dp, &sc->sc_softc.sc_channel, scsiprint); 213 } 214 215 216 int 217 csc_intr(arg) 218 void *arg; 219 { 220 struct sfas_softc *dev = arg; 221 csc_regmap_p rp; 222 int quickints; 223 224 rp = (csc_regmap_p)dev->sc_fas; 225 226 if (*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) { 227 quickints = 16; 228 do { 229 dev->sc_status = *rp->FAS216.sfas_status; 230 dev->sc_interrupt = *rp->FAS216.sfas_interrupt; 231 232 if (dev->sc_interrupt & SFAS_INT_RESELECTED) { 233 dev->sc_resel[0] = *rp->FAS216.sfas_fifo; 234 dev->sc_resel[1] = *rp->FAS216.sfas_fifo; 235 } 236 sfasintr(dev); 237 238 } while((*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) 239 && --quickints); 240 } 241 242 return(0); /* Pass interrupt on down the chain */ 243 } 244 245 /* Load transfer address into DMA register */ 246 void 247 csc_set_dma_adr(sc, ptr) 248 struct sfas_softc *sc; 249 void *ptr; 250 { 251 return; 252 } 253 254 /* Set DMA transfer counter */ 255 void 256 csc_set_dma_tc(sc, len) 257 struct sfas_softc *sc; 258 unsigned int len; 259 { 260 *sc->sc_fas->sfas_tc_low = len; len >>= 8; 261 *sc->sc_fas->sfas_tc_mid = len; len >>= 8; 262 *sc->sc_fas->sfas_tc_high = len; 263 } 264 265 /* Set DMA mode */ 266 void 267 csc_set_dma_mode(sc, mode) 268 struct sfas_softc *sc; 269 int mode; 270 { 271 } 272 273 /* Initialize DMA for transfer */ 274 int 275 csc_setup_dma(sc, ptr, len, mode) 276 void *sc; 277 void *ptr; 278 int len; 279 int mode; 280 { 281 282 return (0); 283 } 284 285 /* Check if address and len is ok for DMA transfer */ 286 int 287 csc_need_bump(sc, ptr, len) 288 void *sc; 289 void *ptr; 290 int len; 291 { 292 int p; 293 294 p = (int)ptr & 0x03; 295 296 if (p) { 297 p = 4-p; 298 299 if (len < 256) 300 p = len; 301 } 302 303 return(p); 304 } 305 306 /* Interrupt driven routines */ 307 int 308 csc_build_dma_chain(sc, chain, p, l) 309 void *sc; 310 void *chain; 311 void *p; 312 int l; 313 { 314 return(0); 315 } 316 317 /* Turn on/off led */ 318 void 319 csc_led(v, mode) 320 void *v; 321 int mode; 322 { 323 struct sfas_softc *sc = v; 324 csc_regmap_p rp; 325 326 rp = (csc_regmap_p)sc->sc_fas; 327 328 if (mode) { 329 sc->sc_led_status++; 330 } else { 331 if (sc->sc_led_status) 332 sc->sc_led_status--; 333 } 334 } 335
Indexes created Wed Oct 01 19:09:53 GMT 2025