csc.c revision 1.4
1 /* $NetBSD: csc.c,v 1.4 2002/08/05 23:30:05 bjh21 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 66 struct cfattach csc_ca = { 67 sizeof(struct csc_softc), cscmatch, cscattach 68 }; 69 70 int csc_intr __P((void *arg)); 71 int csc_setup_dma __P((struct sfas_softc *sc, void *ptr, int len, 72 int mode)); 73 int csc_build_dma_chain __P((struct sfas_softc *sc, 74 struct sfas_dma_chain *chain, void *p, int l)); 75 int csc_need_bump __P((struct sfas_softc *sc, void *ptr, int len)); 76 void csc_led __P((struct sfas_softc *sc, int mode)); 77 78 /* 79 * if we are a Cumana SCSI-2 card 80 */ 81 int 82 cscmatch(pdp, cf, auxp) 83 struct device *pdp; 84 struct cfdata *cf; 85 void *auxp; 86 { 87 struct podule_attach_args *pa = (struct podule_attach_args *)auxp; 88 89 /* Look for the card */ 90 if (pa->pa_product == PODULE_CUMANA_SCSI2) 91 return 1; 92 93 /* PowerROM */ 94 if (pa->pa_product == PODULE_ALSYSTEMS_SCSI && 95 podulebus_initloader(pa) == 0 && 96 podloader_callloader(pa, 0, 0) == PRID_CUMANA_SCSI2) 97 return 1; 98 99 return 0; 100 } 101 102 void 103 cscattach(pdp, dp, auxp) 104 struct device *pdp; 105 struct device *dp; 106 void *auxp; 107 { 108 struct csc_softc *sc = (struct csc_softc *)dp; 109 struct podule_attach_args *pa; 110 csc_regmap_p rp = &sc->sc_regmap; 111 vu_char *fas; 112 int loop; 113 114 pa = (struct podule_attach_args *)auxp; 115 116 if (pa->pa_podule_number == -1) 117 panic("Podule has disappeared !"); 118 119 sc->sc_specific.sc_podule_number = pa->pa_podule_number; 120 sc->sc_specific.sc_podule = pa->pa_podule; 121 sc->sc_specific.sc_iobase = 122 (vu_char *)sc->sc_specific.sc_podule->mod_base; 123 124 rp->status0 = &sc->sc_specific.sc_iobase[CSC_STATUS0]; 125 rp->alatch = &sc->sc_specific.sc_iobase[CSC_ALATCH]; 126 rp->dack = (vu_short *)&sc->sc_specific.sc_iobase[CSC_DACK]; 127 fas = &sc->sc_specific.sc_iobase[CSC_FAS_OFFSET_BASE]; 128 129 rp->FAS216.sfas_tc_low = &fas[CSC_FAS_OFFSET_TCL]; 130 rp->FAS216.sfas_tc_mid = &fas[CSC_FAS_OFFSET_TCM]; 131 rp->FAS216.sfas_fifo = &fas[CSC_FAS_OFFSET_FIFO]; 132 rp->FAS216.sfas_command = &fas[CSC_FAS_OFFSET_COMMAND]; 133 rp->FAS216.sfas_dest_id = &fas[CSC_FAS_OFFSET_DESTID]; 134 rp->FAS216.sfas_timeout = &fas[CSC_FAS_OFFSET_TIMEOUT]; 135 rp->FAS216.sfas_syncper = &fas[CSC_FAS_OFFSET_PERIOD]; 136 rp->FAS216.sfas_syncoff = &fas[CSC_FAS_OFFSET_OFFSET]; 137 rp->FAS216.sfas_config1 = &fas[CSC_FAS_OFFSET_CONFIG1]; 138 rp->FAS216.sfas_clkconv = &fas[CSC_FAS_OFFSET_CLKCONV]; 139 rp->FAS216.sfas_test = &fas[CSC_FAS_OFFSET_TEST]; 140 rp->FAS216.sfas_config2 = &fas[CSC_FAS_OFFSET_CONFIG2]; 141 rp->FAS216.sfas_config3 = &fas[CSC_FAS_OFFSET_CONFIG3]; 142 rp->FAS216.sfas_tc_high = &fas[CSC_FAS_OFFSET_TCH]; 143 rp->FAS216.sfas_fifo_bot = &fas[CSC_FAS_OFFSET_FIFOBOT]; 144 145 sc->sc_softc.sc_fas = (sfas_regmap_p)rp; 146 sc->sc_softc.sc_spec = &sc->sc_specific; 147 148 sc->sc_softc.sc_led = csc_led; 149 150 sc->sc_softc.sc_setup_dma = csc_setup_dma; 151 sc->sc_softc.sc_build_dma_chain = csc_build_dma_chain; 152 sc->sc_softc.sc_need_bump = csc_need_bump; 153 154 sc->sc_softc.sc_clock_freq = 8; /* Cumana runs at 8MHz */ 155 sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */ 156 sc->sc_softc.sc_config_flags = SFAS_NO_DMA /*| SFAS_NF_DEBUG*/; 157 sc->sc_softc.sc_host_id = 7; /* Should check the jumpers */ 158 159 sc->sc_softc.sc_bump_sz = NBPG; 160 sc->sc_softc.sc_bump_pa = 0x0; 161 162 sfasinitialize((struct sfas_softc *)sc); 163 164 sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev; 165 sc->sc_softc.sc_adapter.adapt_nchannels = 1; 166 sc->sc_softc.sc_adapter.adapt_openings = 7; 167 sc->sc_softc.sc_adapter.adapt_max_periph = 1; 168 sc->sc_softc.sc_adapter.adapt_ioctl = NULL; 169 sc->sc_softc.sc_adapter.adapt_minphys = sfas_minphys; 170 sc->sc_softc.sc_adapter.adapt_request = sfas_scsi_request; 171 172 sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter; 173 sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype; 174 sc->sc_softc.sc_channel.chan_channel = 0; 175 sc->sc_softc.sc_channel.chan_ntargets = 8; 176 sc->sc_softc.sc_channel.chan_nluns = 8; 177 sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id; 178 179 /* Provide an override for the host id */ 180 (void)get_bootconf_option(boot_args, "csc.hostid", 181 BOOTOPT_TYPE_INT, &sc->sc_softc.sc_channel.chan_id); 182 183 printf(": host=%d", sc->sc_softc.sc_channel.chan_id); 184 185 /* initialise the alatch */ 186 sc->sc_specific.sc_alatch_defs = (CSC_POLL?0:CSC_ALATCH_DEFS_INTEN); 187 for (loop = 0; loop < 8; loop ++) { 188 if(loop != 3) 189 *rp->alatch = (loop << 1) | 190 ((sc->sc_specific.sc_alatch_defs & (1 << loop))?1:0); 191 } 192 193 #if CSC_POLL == 0 194 evcnt_attach_dynamic(&sc->sc_softc.sc_intrcnt, EVCNT_TYPE_INTR, NULL, 195 dp->dv_xname, "intr"); 196 sc->sc_softc.sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, 197 csc_intr, &sc->sc_softc, &sc->sc_softc.sc_intrcnt); 198 if (sc->sc_softc.sc_ih == NULL) 199 panic("%s: Cannot install IRQ handler\n", dp->dv_xname); 200 #else 201 printf(" polling"); 202 sc->sc_softc.sc_adapter.adapt_flags |= SCSIPI_ADAPT_POLL_ONLY; 203 #endif 204 printf("\n"); 205 206 /* attach all scsi units on us */ 207 config_found(dp, &sc->sc_softc.sc_channel, scsiprint); 208 } 209 210 211 int 212 csc_intr(arg) 213 void *arg; 214 { 215 struct sfas_softc *dev = arg; 216 csc_regmap_p rp; 217 int quickints; 218 219 rp = (csc_regmap_p)dev->sc_fas; 220 221 if (*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) { 222 quickints = 16; 223 do { 224 dev->sc_status = *rp->FAS216.sfas_status; 225 dev->sc_interrupt = *rp->FAS216.sfas_interrupt; 226 227 if (dev->sc_interrupt & SFAS_INT_RESELECTED) { 228 dev->sc_resel[0] = *rp->FAS216.sfas_fifo; 229 dev->sc_resel[1] = *rp->FAS216.sfas_fifo; 230 } 231 sfasintr(dev); 232 233 } while((*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) 234 && --quickints); 235 } 236 237 return(0); /* Pass interrupt on down the chain */ 238 } 239 240 /* Load transfer address into dma register */ 241 void 242 csc_set_dma_adr(sc, ptr) 243 struct sfas_softc *sc; 244 void *ptr; 245 { 246 return; 247 } 248 249 /* Set DMA transfer counter */ 250 void 251 csc_set_dma_tc(sc, len) 252 struct sfas_softc *sc; 253 unsigned int len; 254 { 255 *sc->sc_fas->sfas_tc_low = len; len >>= 8; 256 *sc->sc_fas->sfas_tc_mid = len; len >>= 8; 257 *sc->sc_fas->sfas_tc_high = len; 258 } 259 260 /* Set DMA mode */ 261 void 262 csc_set_dma_mode(sc, mode) 263 struct sfas_softc *sc; 264 int mode; 265 { 266 } 267 268 /* Initialize DMA for transfer */ 269 int 270 csc_setup_dma(sc, ptr, len, mode) 271 struct sfas_softc *sc; 272 void *ptr; 273 int len; 274 int mode; 275 { 276 return(0); 277 } 278 279 /* Check if address and len is ok for DMA transfer */ 280 int 281 csc_need_bump(sc, ptr, len) 282 struct sfas_softc *sc; 283 void *ptr; 284 int len; 285 { 286 int p; 287 288 p = (int)ptr & 0x03; 289 290 if (p) { 291 p = 4-p; 292 293 if (len < 256) 294 p = len; 295 } 296 297 return(p); 298 } 299 300 /* Interrupt driven routines */ 301 int 302 csc_build_dma_chain(sc, chain, p, l) 303 struct sfas_softc *sc; 304 struct sfas_dma_chain *chain; 305 void *p; 306 int l; 307 { 308 return(0); 309 } 310 311 /* Turn on/off led */ 312 void 313 csc_led(sc, mode) 314 struct sfas_softc *sc; 315 int mode; 316 { 317 csc_regmap_p rp; 318 319 rp = (csc_regmap_p)sc->sc_fas; 320 321 if (mode) { 322 sc->sc_led_status++; 323 } else { 324 if (sc->sc_led_status) 325 sc->sc_led_status--; 326 } 327 } 328
Indexes created Wed Oct 01 19:09:53 GMT 2025