dma_sbus.c revision 1.10
1 /* $NetBSD: dma_sbus.c,v 1.10 2002/03/11 16:00:56 pk 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 Paul Kranenburg. 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 * Copyright (c) 1994 Peter Galbavy. All rights reserved. 41 * 42 * Redistribution and use in source and binary forms, with or without 43 * modification, are permitted provided that the following conditions 44 * are met: 45 * 1. Redistributions of source code must retain the above copyright 46 * notice, this list of conditions and the following disclaimer. 47 * 2. Redistributions in binary form must reproduce the above copyright 48 * notice, this list of conditions and the following disclaimer in the 49 * documentation and/or other materials provided with the distribution. 50 * 3. All advertising materials mentioning features or use of this software 51 * must display the following acknowledgement: 52 * This product includes software developed by Peter Galbavy. 53 * 4. The name of the author may not be used to endorse or promote products 54 * derived from this software without specific prior written permission. 55 * 56 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 57 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 58 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 59 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 60 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 61 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 62 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 63 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 64 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 65 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 66 */ 67 68 #include <sys/cdefs.h> 69 __KERNEL_RCSID(0, "$NetBSD: dma_sbus.c,v 1.10 2002/03/11 16:00:56 pk Exp $"); 70 71 #include <sys/param.h> 72 #include <sys/systm.h> 73 #include <sys/kernel.h> 74 #include <sys/errno.h> 75 #include <sys/device.h> 76 #include <sys/malloc.h> 77 78 #include <machine/bus.h> 79 #include <machine/intr.h> 80 #include <machine/autoconf.h> 81 82 #include <dev/sbus/sbusvar.h> 83 84 #include <dev/ic/lsi64854reg.h> 85 #include <dev/ic/lsi64854var.h> 86 87 #include <dev/scsipi/scsi_all.h> 88 #include <dev/scsipi/scsipi_all.h> 89 #include <dev/scsipi/scsiconf.h> 90 91 #include <dev/ic/ncr53c9xreg.h> 92 #include <dev/ic/ncr53c9xvar.h> 93 94 struct dma_softc { 95 struct lsi64854_softc sc_lsi64854; /* base device */ 96 struct sbusdev sc_sd; /* sbus device */ 97 }; 98 99 int dmamatch_sbus __P((struct device *, struct cfdata *, void *)); 100 void dmaattach_sbus __P((struct device *, struct device *, void *)); 101 102 int dmaprint_sbus __P((void *, const char *)); 103 104 void *dmabus_intr_establish __P(( 105 bus_space_tag_t, 106 int, /*bus interrupt priority*/ 107 int, /*`device class' level*/ 108 int, /*flags*/ 109 int (*) __P((void *)), /*handler*/ 110 void *)); /*handler arg*/ 111 112 static bus_space_tag_t dma_alloc_bustag __P((struct dma_softc *sc)); 113 114 struct cfattach dma_sbus_ca = { 115 sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus 116 }; 117 118 struct cfattach ledma_ca = { 119 sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus 120 }; 121 122 int 123 dmaprint_sbus(aux, busname) 124 void *aux; 125 const char *busname; 126 { 127 struct sbus_attach_args *sa = aux; 128 bus_space_tag_t t = sa->sa_bustag; 129 struct dma_softc *sc = t->cookie; 130 131 sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */ 132 sbus_print(aux, busname); /* XXX */ 133 sa->sa_bustag = t; /* XXX */ 134 return (UNCONF); 135 } 136 137 int 138 dmamatch_sbus(parent, cf, aux) 139 struct device *parent; 140 struct cfdata *cf; 141 void *aux; 142 { 143 struct sbus_attach_args *sa = aux; 144 145 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 || 146 strcmp("espdma", sa->sa_name) == 0); 147 } 148 149 void 150 dmaattach_sbus(parent, self, aux) 151 struct device *parent, *self; 152 void *aux; 153 { 154 struct sbus_attach_args *sa = aux; 155 struct dma_softc *dsc = (void *)self; 156 struct lsi64854_softc *sc = &dsc->sc_lsi64854; 157 bus_space_handle_t bh; 158 bus_space_tag_t sbt; 159 int sbusburst, burst; 160 int node; 161 162 node = sa->sa_node; 163 164 sc->sc_bustag = sa->sa_bustag; 165 sc->sc_dmatag = sa->sa_dmatag; 166 167 /* Map registers */ 168 if (sa->sa_npromvaddrs != 0) 169 sc->sc_regs = (bus_space_handle_t)sa->sa_promvaddrs[0]; 170 else { 171 if (sbus_bus_map(sa->sa_bustag, 172 sa->sa_slot, sa->sa_offset, sa->sa_size, 173 BUS_SPACE_MAP_LINEAR, &bh) != 0) { 174 printf("%s: cannot map registers\n", self->dv_xname); 175 return; 176 } 177 sc->sc_regs = bh; 178 } 179 180 /* 181 * Get transfer burst size from PROM and plug it into the 182 * controller registers. This is needed on the Sun4m; do 183 * others need it too? 184 */ 185 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 186 if (sbusburst == 0) 187 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 188 189 burst = PROM_getpropint(node,"burst-sizes", -1); 190 if (burst == -1) 191 /* take SBus burst sizes */ 192 burst = sbusburst; 193 194 /* Clamp at parent's burst sizes */ 195 burst &= sbusburst; 196 sc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 197 (burst & SBUS_BURST_16) ? 16 : 0; 198 199 if (sc->sc_dev.dv_cfdata->cf_attach == &ledma_ca) { 200 char *cabletype; 201 u_int32_t csr; 202 /* 203 * Check to see which cable type is currently active and 204 * set the appropriate bit in the ledma csr so that it 205 * gets used. If we didn't netboot, the PROM won't have 206 * the "cable-selection" property; default to TP and then 207 * the user can change it via a "media" option to ifconfig. 208 */ 209 cabletype = PROM_getpropstring(node, "cable-selection"); 210 csr = L64854_GCSR(sc); 211 if (strcmp(cabletype, "tpe") == 0) { 212 csr |= E_TP_AUI; 213 } else if (strcmp(cabletype, "aui") == 0) { 214 csr &= ~E_TP_AUI; 215 } else { 216 /* assume TP if nothing there */ 217 csr |= E_TP_AUI; 218 } 219 L64854_SCSR(sc, csr); 220 delay(20000); /* manual says we need a 20ms delay */ 221 sc->sc_channel = L64854_CHANNEL_ENET; 222 } else { 223 sc->sc_channel = L64854_CHANNEL_SCSI; 224 } 225 226 sbus_establish(&dsc->sc_sd, &sc->sc_dev); 227 sbt = dma_alloc_bustag(dsc); 228 lsi64854_attach(sc); 229 230 /* Attach children */ 231 for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) { 232 struct sbus_attach_args sa; 233 sbus_setup_attach_args((struct sbus_softc *)parent, 234 sbt, sc->sc_dmatag, node, &sa); 235 (void) config_found(&sc->sc_dev, (void *)&sa, dmaprint_sbus); 236 sbus_destroy_attach_args(&sa); 237 } 238 } 239 240 void * 241 dmabus_intr_establish(t, pri, level, flags, handler, arg) 242 bus_space_tag_t t; 243 int pri; 244 int level; 245 int flags; 246 int (*handler) __P((void *)); 247 void *arg; 248 { 249 struct lsi64854_softc *sc = t->cookie; 250 251 /* XXX - for now only le; do esp later */ 252 if (sc->sc_channel == L64854_CHANNEL_ENET) { 253 sc->sc_intrchain = handler; 254 sc->sc_intrchainarg = arg; 255 handler = lsi64854_enet_intr; 256 arg = sc; 257 } 258 return (bus_intr_establish(sc->sc_bustag, pri, level, flags, 259 handler, arg)); 260 } 261 262 bus_space_tag_t 263 dma_alloc_bustag(sc) 264 struct dma_softc *sc; 265 { 266 bus_space_tag_t sbt; 267 268 sbt = (bus_space_tag_t) malloc(sizeof(struct sparc_bus_space_tag), 269 M_DEVBUF, M_NOWAIT|M_ZERO); 270 if (sbt == NULL) 271 return (NULL); 272 273 sbt->cookie = sc; 274 sbt->parent = sc->sc_lsi64854.sc_bustag; 275 sbt->sparc_intr_establish = dmabus_intr_establish; 276 return (sbt); 277 } 278
Indexes created Mon Sep 29 03:10:08 GMT 2025