csc.c revision 1.7
1 /* $NetBSD: csc.c,v 1.7 2002/10/02 02:23:51 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 66 CFATTACH_DECL(csc, sizeof(struct csc_softc), 67 cscmatch, cscattach, NULL, NULL); 68 69 int csc_intr __P((void *arg)); 70 int csc_setup_dma __P((struct sfas_softc *sc, void *ptr, int len, 71 int mode)); 72 int csc_build_dma_chain __P((struct sfas_softc *sc, 73 struct sfas_dma_chain *chain, void *p, int l)); 74 int csc_need_bump __P((struct sfas_softc *sc, void *ptr, int len)); 75 void csc_led __P((struct sfas_softc *sc, int mode)); 76 77 /* 78 * if we are a Cumana SCSI-2 card 79 */ 80 int 81 cscmatch(pdp, cf, auxp) 82 struct device *pdp; 83 struct cfdata *cf; 84 void *auxp; 85 { 86 struct podule_attach_args *pa = (struct podule_attach_args *)auxp; 87 88 /* Look for the card */ 89 if (pa->pa_product == PODULE_CUMANA_SCSI2) 90 return 1; 91 92 /* PowerROM */ 93 if (pa->pa_product == PODULE_ALSYSTEMS_SCSI && 94 podulebus_initloader(pa) == 0 && 95 podloader_callloader(pa, 0, 0) == PRID_CUMANA_SCSI2) 96 return 1; 97 98 return 0; 99 } 100 101 void 102 cscattach(pdp, dp, auxp) 103 struct device *pdp; 104 struct device *dp; 105 void *auxp; 106 { 107 struct csc_softc *sc = (struct csc_softc *)dp; 108 struct podule_attach_args *pa; 109 csc_regmap_p rp = &sc->sc_regmap; 110 vu_char *fas; 111 int loop; 112 113 pa = (struct podule_attach_args *)auxp; 114 115 if (pa->pa_podule_number == -1) 116 panic("Podule has disappeared !"); 117 118 sc->sc_specific.sc_podule_number = pa->pa_podule_number; 119 sc->sc_specific.sc_podule = pa->pa_podule; 120 sc->sc_specific.sc_iobase = 121 (vu_char *)sc->sc_specific.sc_podule->mod_base; 122 123 rp->status0 = &sc->sc_specific.sc_iobase[CSC_STATUS0]; 124 rp->alatch = &sc->sc_specific.sc_iobase[CSC_ALATCH]; 125 rp->dack = (vu_short *)&sc->sc_specific.sc_iobase[CSC_DACK]; 126 fas = &sc->sc_specific.sc_iobase[CSC_FAS_OFFSET_BASE]; 127 128 rp->FAS216.sfas_tc_low = &fas[CSC_FAS_OFFSET_TCL]; 129 rp->FAS216.sfas_tc_mid = &fas[CSC_FAS_OFFSET_TCM]; 130 rp->FAS216.sfas_fifo = &fas[CSC_FAS_OFFSET_FIFO]; 131 rp->FAS216.sfas_command = &fas[CSC_FAS_OFFSET_COMMAND]; 132 rp->FAS216.sfas_dest_id = &fas[CSC_FAS_OFFSET_DESTID]; 133 rp->FAS216.sfas_timeout = &fas[CSC_FAS_OFFSET_TIMEOUT]; 134 rp->FAS216.sfas_syncper = &fas[CSC_FAS_OFFSET_PERIOD]; 135 rp->FAS216.sfas_syncoff = &fas[CSC_FAS_OFFSET_OFFSET]; 136 rp->FAS216.sfas_config1 = &fas[CSC_FAS_OFFSET_CONFIG1]; 137 rp->FAS216.sfas_clkconv = &fas[CSC_FAS_OFFSET_CLKCONV]; 138 rp->FAS216.sfas_test = &fas[CSC_FAS_OFFSET_TEST]; 139 rp->FAS216.sfas_config2 = &fas[CSC_FAS_OFFSET_CONFIG2]; 140 rp->FAS216.sfas_config3 = &fas[CSC_FAS_OFFSET_CONFIG3]; 141 rp->FAS216.sfas_tc_high = &fas[CSC_FAS_OFFSET_TCH]; 142 rp->FAS216.sfas_fifo_bot = &fas[CSC_FAS_OFFSET_FIFOBOT]; 143 144 sc->sc_softc.sc_fas = (sfas_regmap_p)rp; 145 sc->sc_softc.sc_spec = &sc->sc_specific; 146 147 sc->sc_softc.sc_led = csc_led; 148 149 sc->sc_softc.sc_setup_dma = csc_setup_dma; 150 sc->sc_softc.sc_build_dma_chain = csc_build_dma_chain; 151 sc->sc_softc.sc_need_bump = csc_need_bump; 152 153 sc->sc_softc.sc_clock_freq = 8; /* Cumana runs at 8MHz */ 154 sc->sc_softc.sc_timeout = 250; /* Set default timeout to 250ms */ 155 sc->sc_softc.sc_config_flags = SFAS_NO_DMA /*| SFAS_NF_DEBUG*/; 156 sc->sc_softc.sc_host_id = 7; /* Should check the jumpers */ 157 158 sc->sc_softc.sc_bump_sz = NBPG; 159 sc->sc_softc.sc_bump_pa = 0x0; 160 161 sfasinitialize((struct sfas_softc *)sc); 162 163 sc->sc_softc.sc_adapter.adapt_dev = &sc->sc_softc.sc_dev; 164 sc->sc_softc.sc_adapter.adapt_nchannels = 1; 165 sc->sc_softc.sc_adapter.adapt_openings = 7; 166 sc->sc_softc.sc_adapter.adapt_max_periph = 1; 167 sc->sc_softc.sc_adapter.adapt_ioctl = NULL; 168 sc->sc_softc.sc_adapter.adapt_minphys = sfas_minphys; 169 sc->sc_softc.sc_adapter.adapt_request = sfas_scsi_request; 170 171 sc->sc_softc.sc_channel.chan_adapter = &sc->sc_softc.sc_adapter; 172 sc->sc_softc.sc_channel.chan_bustype = &scsi_bustype; 173 sc->sc_softc.sc_channel.chan_channel = 0; 174 sc->sc_softc.sc_channel.chan_ntargets = 8; 175 sc->sc_softc.sc_channel.chan_nluns = 8; 176 sc->sc_softc.sc_channel.chan_id = sc->sc_softc.sc_host_id; 177 178 /* Provide an override for the host id */ 179 (void)get_bootconf_option(boot_args, "csc.hostid", 180 BOOTOPT_TYPE_INT, &sc->sc_softc.sc_channel.chan_id); 181 182 printf(": host=%d", sc->sc_softc.sc_channel.chan_id); 183 184 /* initialise the alatch */ 185 sc->sc_specific.sc_alatch_defs = (CSC_POLL?0:CSC_ALATCH_DEFS_INTEN); 186 for (loop = 0; loop < 8; loop ++) { 187 if(loop != 3) 188 *rp->alatch = (loop << 1) | 189 ((sc->sc_specific.sc_alatch_defs & (1 << loop))?1:0); 190 } 191 192 #if CSC_POLL == 0 193 evcnt_attach_dynamic(&sc->sc_softc.sc_intrcnt, EVCNT_TYPE_INTR, NULL, 194 dp->dv_xname, "intr"); 195 sc->sc_softc.sc_ih = podulebus_irq_establish(pa->pa_ih, IPL_BIO, 196 csc_intr, &sc->sc_softc, &sc->sc_softc.sc_intrcnt); 197 if (sc->sc_softc.sc_ih == NULL) 198 panic("%s: Cannot install IRQ handler", dp->dv_xname); 199 #else 200 printf(" polling"); 201 sc->sc_softc.sc_adapter.adapt_flags |= SCSIPI_ADAPT_POLL_ONLY; 202 #endif 203 printf("\n"); 204 205 /* attach all scsi units on us */ 206 config_found(dp, &sc->sc_softc.sc_channel, scsiprint); 207 } 208 209 210 int 211 csc_intr(arg) 212 void *arg; 213 { 214 struct sfas_softc *dev = arg; 215 csc_regmap_p rp; 216 int quickints; 217 218 rp = (csc_regmap_p)dev->sc_fas; 219 220 if (*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) { 221 quickints = 16; 222 do { 223 dev->sc_status = *rp->FAS216.sfas_status; 224 dev->sc_interrupt = *rp->FAS216.sfas_interrupt; 225 226 if (dev->sc_interrupt & SFAS_INT_RESELECTED) { 227 dev->sc_resel[0] = *rp->FAS216.sfas_fifo; 228 dev->sc_resel[1] = *rp->FAS216.sfas_fifo; 229 } 230 sfasintr(dev); 231 232 } while((*rp->FAS216.sfas_status & SFAS_STAT_INTERRUPT_PENDING) 233 && --quickints); 234 } 235 236 return(0); /* Pass interrupt on down the chain */ 237 } 238 239 /* Load transfer address into dma register */ 240 void 241 csc_set_dma_adr(sc, ptr) 242 struct sfas_softc *sc; 243 void *ptr; 244 { 245 return; 246 } 247 248 /* Set DMA transfer counter */ 249 void 250 csc_set_dma_tc(sc, len) 251 struct sfas_softc *sc; 252 unsigned int len; 253 { 254 *sc->sc_fas->sfas_tc_low = len; len >>= 8; 255 *sc->sc_fas->sfas_tc_mid = len; len >>= 8; 256 *sc->sc_fas->sfas_tc_high = len; 257 } 258 259 /* Set DMA mode */ 260 void 261 csc_set_dma_mode(sc, mode) 262 struct sfas_softc *sc; 263 int mode; 264 { 265 } 266 267 /* Initialize DMA for transfer */ 268 int 269 csc_setup_dma(sc, ptr, len, mode) 270 struct sfas_softc *sc; 271 void *ptr; 272 int len; 273 int mode; 274 { 275 return(0); 276 } 277 278 /* Check if address and len is ok for DMA transfer */ 279 int 280 csc_need_bump(sc, ptr, len) 281 struct sfas_softc *sc; 282 void *ptr; 283 int len; 284 { 285 int p; 286 287 p = (int)ptr & 0x03; 288 289 if (p) { 290 p = 4-p; 291 292 if (len < 256) 293 p = len; 294 } 295 296 return(p); 297 } 298 299 /* Interrupt driven routines */ 300 int 301 csc_build_dma_chain(sc, chain, p, l) 302 struct sfas_softc *sc; 303 struct sfas_dma_chain *chain; 304 void *p; 305 int l; 306 { 307 return(0); 308 } 309 310 /* Turn on/off led */ 311 void 312 csc_led(sc, mode) 313 struct sfas_softc *sc; 314 int mode; 315 { 316 csc_regmap_p rp; 317 318 rp = (csc_regmap_p)sc->sc_fas; 319 320 if (mode) { 321 sc->sc_led_status++; 322 } else { 323 if (sc->sc_led_status) 324 sc->sc_led_status--; 325 } 326 } 327
Indexes created Wed Oct 01 19:09:53 GMT 2025