csc.c revision 1.2
1 /* $NetBSD: csc.c,v 1.2 2001/11/27 00:53:12 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 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/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/device.h> 47 #include <dev/scsipi/scsi_all.h> 48 #include <dev/scsipi/scsipi_all.h> 49 #include <dev/scsipi/scsiconf.h> 50 #include <uvm/uvm_extern.h> 51 #include <machine/pmap.h> 52 #include <machine/io.h> 53 #include <machine/intr.h> 54 #include <machine/bootconfig.h> 55 #include <acorn32/podulebus/podulebus.h> 56 #include <acorn32/podulebus/sfasreg.h> 57 #include <acorn32/podulebus/sfasvar.h> 58 #include <acorn32/podulebus/cscreg.h> 59 #include <acorn32/podulebus/cscvar.h> 60 #include <dev/podulebus/podules.h> 61 #include <dev/podulebus/powerromreg.h> 62 63 void cscattach __P((struct device *, struct device *, void *)); 64 int cscmatch __P((struct device *, struct cfdata *, void *)); 65 void csc_scsi_request __P((struct scsipi_channel *, 66 scsipi_adapter_req_t, void *)); 67 68 struct cfattach csc_ca = { 69 sizeof(struct csc_softc), cscmatch, cscattach 70 }; 71 72 int csc_intr __P((void *arg)); 73 int csc_setup_dma __P((struct sfas_softc *sc, void *ptr, int len, 74 int mode)); 75 int csc_build_dma_chain __P((struct sfas_softc *sc, 76 struct sfas_dma_chain *chain, void *p, int l)); 77 int csc_need_bump __P((struct sfas_softc *sc, void *ptr, int len)); 78 void csc_led __P((struct sfas_softc *sc, int mode)); 79 80 /* 81 * if we are a Cumana SCSI-2 card 82 */ 83 int 84 cscmatch(pdp, cf, auxp) 85 struct device *pdp; 86 struct cfdata *cf; 87 void *auxp; 88 { 89 struct podule_attach_args *pa = (struct podule_attach_args *)auxp; 90 91 /* Look for the card */ 92 if (matchpodule(pa, MANUFACTURER_CUMANA, PODULE_CUMANA_SCSI2, -1)) 93 return 1; 94 95 /* PowerROM */ 96 if (pa->pa_product == PODULE_ALSYSTEMS_SCSI && 97 podulebus_initloader(pa) == 0 && 98 podloader_callloader(pa, 0, 0) == PRID_CUMANA_SCSI2) 99 return 1; 100 101 return 0; 102 } 103 104 void 105 cscattach(pdp, dp, auxp) 106 struct device *pdp; 107 struct device *dp; 108 void *auxp; 109 { 110 struct csc_softc *sc = (struct csc_softc *)dp; 111 struct podule_attach_args *pa; 112 csc_regmap_p rp = &sc->sc_regmap; 113 vu_char *fas; 114 int loop; 115 116 pa = (struct podule_attach_args *)auxp; 117 118 if (pa->pa_podule_number == -1) 119 panic("Podule has disappeared !"); 120 121 sc->sc_specific.sc_podule_number = pa->pa_podule_number; 122 sc->sc_specific.sc_podule = pa->pa_podule; 123 sc->sc_specific.sc_iobase = 124 (vu_char *)sc->sc_specific.sc_podule->mod_base; 125 126 rp->status0 = &sc->sc_specific.sc_iobase[CSC_STATUS0]; 127 rp->alatch = &sc->sc_specific.sc_iobase[CSC_ALATCH]; 128 rp->dack = (vu_short *)&sc->sc_specific.sc_iobase[CSC_DACK]; 129 fas = &sc->sc_specific.sc_iobase[CSC_FAS_OFFSET_BASE]; 130 131 rp->FAS216.sfas_tc_low = &fas[CSC_FAS_OFFSET_TCL]; 132 rp->FAS216.sfas_tc_mid = &fas[CSC_FAS_OFFSET_TCM]; 133 rp->FAS216.sfas_fifo = &fas[CSC_FAS_OFFSET_FIFO]; 134 rp->FAS216.sfas_command = &fas[CSC_FAS_OFFSET_COMMAND]; 135 rp->FAS216.sfas_dest_id = &fas[CSC_FAS_OFFSET_DESTID]; 136 rp->FAS216.sfas_timeout = &fas[CSC_FAS_OFFSET_TIMEOUT]; 137 rp->FAS216.sfas_syncper = &fas[CSC_FAS_OFFSET_PERIOD]; 138 rp->FAS216.sfas_syncoff = &fas[CSC_FAS_OFFSET_OFFSET]; 139 rp->FAS216.sfas_config1 = &fas[CSC_FAS_OFFSET_CONFIG1]; 140 rp->FAS216.sfas_clkconv = &fas[CSC_FAS_OFFSET_CLKCONV]; 141 rp->FAS216.sfas_test = &fas[CSC_FAS_OFFSET_TEST]; 142 rp->FAS216.sfas_config2 = &fas[CSC_FAS_OFFSET_CONFIG2]; 143 rp->FAS216.sfas_config3 = &fas[CSC_FAS_OFFSET_CONFIG3]; 144 rp->FAS216.sfas_tc_high = &fas[CSC_FAS_OFFSET_TCH]; 145 rp->FAS216.sfas_fifo_bot = &fas[CSC_FAS_OFFSET_FIFOBOT]; 146 147 sc->sc_softc.sc_fas = (sfas_regmap_p)rp; 148 sc->sc_softc.sc_spec = &sc->sc_specific; 149 150 sc->sc_softc.sc_led = csc_led; 151 152 sc->sc_softc.sc_setup_dma = csc_setup_dma; 153 sc->sc_softc.sc_build_dma_chain = csc_build_dma_chain; 154 sc->sc_softc.sc_need_bump = csc_need_bump; 155 156 sc->sc_softc.sc_clock_freq = 8; /* Cumana runs at 8MHz */ 157 sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */ 158 sc->sc_softc.sc_config_flags = SFAS_NO_DMA /*| SFAS_NF_DEBUG*/; 159 sc->sc_softc.sc_host_id = 7; /* Should check the jumpers */ 160 161 sc->sc_softc.sc_bump_sz = NBPG; 162 sc->sc_softc.sc_bump_pa = 0x0; 163 164 sfasinitialize((struct sfas_softc *)sc); 165 166 sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev; 167 sc->sc_softc.sc_adapter.adapt_nchannels = 1; 168 sc->sc_softc.sc_adapter.adapt_openings = 7; 169 sc->sc_softc.sc_adapter.adapt_max_periph = 1; 170 sc->sc_softc.sc_adapter.adapt_ioctl = NULL; 171 sc->sc_softc.sc_adapter.adapt_minphys = sfas_minphys; 172 sc->sc_softc.sc_adapter.adapt_request = csc_scsi_request; 173 174 sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter; 175 sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype; 176 sc->sc_softc.sc_channel.chan_channel = 0; 177 sc->sc_softc.sc_channel.chan_ntargets = 8; 178 sc->sc_softc.sc_channel.chan_nluns = 8; 179 sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id; 180 181 /* Provide an override for the host id */ 182 (void)get_bootconf_option(boot_args, "csc.hostid", 183 BOOTOPT_TYPE_INT, &sc->sc_softc.sc_channel.chan_id); 184 185 printf(": host=%d", sc->sc_softc.sc_channel.chan_id); 186 187 /* initialise the alatch */ 188 sc->sc_specific.sc_alatch_defs = (CSC_POLL?0:CSC_ALATCH_DEFS_INTEN); 189 for (loop = 0; loop < 8; loop ++) { 190 if(loop != 3) 191 *rp->alatch = (loop << 1) | 192 ((sc->sc_specific.sc_alatch_defs & (1 << loop))?1:0); 193 } 194 195 #if CSC_POLL == 0 196 evcnt_attach_dynamic(&sc->sc_softc.sc_intrcnt, EVCNT_TYPE_INTR, NULL, 197 dp->dv_xname, "intr"); 198 sc->sc_softc.sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, 199 csc_intr, &sc->sc_softc, &sc->sc_softc.sc_intrcnt); 200 if (sc->sc_softc.sc_ih == NULL) 201 panic("%s: Cannot install IRQ handler\n", dp->dv_xname); 202 #else 203 printf(" polling"); 204 #endif 205 printf("\n"); 206 207 /* attach all scsi units on us */ 208 config_found(dp, &sc->sc_softc.sc_channel, scsiprint); 209 } 210 211 212 int 213 csc_intr(arg) 214 void *arg; 215 { 216 struct sfas_softc *dev = arg; 217 csc_regmap_p rp; 218 int quickints; 219 220 rp = (csc_regmap_p)dev->sc_fas; 221 222 if (*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) { 223 quickints = 16; 224 do { 225 dev->sc_status = *rp->FAS216.sfas_status; 226 dev->sc_interrupt = *rp->FAS216.sfas_interrupt; 227 228 if (dev->sc_interrupt & SFAS_INT_RESELECTED) { 229 dev->sc_resel[0] = *rp->FAS216.sfas_fifo; 230 dev->sc_resel[1] = *rp->FAS216.sfas_fifo; 231 } 232 sfasintr(dev); 233 234 } while((*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) 235 && --quickints); 236 } 237 238 return(0); /* Pass interrupt on down the chain */ 239 } 240 241 /* Load transfer address into dma register */ 242 void 243 csc_set_dma_adr(sc, ptr) 244 struct sfas_softc *sc; 245 void *ptr; 246 { 247 return; 248 } 249 250 /* Set DMA transfer counter */ 251 void 252 csc_set_dma_tc(sc, len) 253 struct sfas_softc *sc; 254 unsigned int len; 255 { 256 *sc->sc_fas->sfas_tc_low = len; len >>= 8; 257 *sc->sc_fas->sfas_tc_mid = len; len >>= 8; 258 *sc->sc_fas->sfas_tc_high = len; 259 } 260 261 /* Set DMA mode */ 262 void 263 csc_set_dma_mode(sc, mode) 264 struct sfas_softc *sc; 265 int mode; 266 { 267 } 268 269 /* Initialize DMA for transfer */ 270 int 271 csc_setup_dma(sc, ptr, len, mode) 272 struct sfas_softc *sc; 273 void *ptr; 274 int len; 275 int mode; 276 { 277 return(0); 278 } 279 280 /* Check if address and len is ok for DMA transfer */ 281 int 282 csc_need_bump(sc, ptr, len) 283 struct sfas_softc *sc; 284 void *ptr; 285 int len; 286 { 287 int p; 288 289 p = (int)ptr & 0x03; 290 291 if (p) { 292 p = 4-p; 293 294 if (len < 256) 295 p = len; 296 } 297 298 return(p); 299 } 300 301 /* Interrupt driven routines */ 302 int 303 csc_build_dma_chain(sc, chain, p, l) 304 struct sfas_softc *sc; 305 struct sfas_dma_chain *chain; 306 void *p; 307 int l; 308 { 309 return(0); 310 } 311 312 /* Turn on/off led */ 313 void 314 csc_led(sc, mode) 315 struct sfas_softc *sc; 316 int mode; 317 { 318 csc_regmap_p rp; 319 320 rp = (csc_regmap_p)sc->sc_fas; 321 322 if (mode) { 323 sc->sc_led_status++; 324 } else { 325 if (sc->sc_led_status) 326 sc->sc_led_status--; 327 } 328 } 329 330 void 331 csc_scsi_request(chan, req, arg) 332 struct scsipi_channel *chan; 333 scsipi_adapter_req_t req; 334 void *arg; 335 { 336 struct scsipi_xfer *xs; 337 338 switch (req) { 339 case ADAPTER_REQ_RUN_XFER: 340 xs = arg; 341 /* ensure command is polling for the moment */ 342 #if CSC_POLL > 0 343 xs->xs_control |= XS_CTL_POLL; 344 #endif 345 default: 346 } 347 sfas_scsi_request(chan, req, arg); 348 } 349
Indexes created Wed Oct 01 19:09:53 GMT 2025