dma_sbus.c revision 1.21
1 /* $NetBSD: dma_sbus.c,v 1.21 2004/03/17 17:04:58 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 1.21 2004/03/17 17:04:58 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 struct dma_softc { 88 struct lsi64854_softc sc_lsi64854; /* base device */ 89 struct sbusdev sc_sd; /* sbus device */ 90 }; 91 92 int dmamatch_sbus __P((struct device *, struct cfdata *, void *)); 93 void dmaattach_sbus __P((struct device *, struct device *, void *)); 94 95 int dmaprint_sbus __P((void *, const char *)); 96 97 void *dmabus_intr_establish __P(( 98 bus_space_tag_t, 99 int, /*bus interrupt priority*/ 100 int, /*`device class' level*/ 101 int (*) __P((void *)), /*handler*/ 102 void *, /*handler arg*/ 103 void (*) __P((void)))); /*optional fast trap handler*/ 104 105 static bus_space_tag_t dma_alloc_bustag __P((struct dma_softc *sc)); 106 107 CFATTACH_DECL(dma_sbus, sizeof(struct dma_softc), 108 dmamatch_sbus, dmaattach_sbus, NULL, NULL); 109 110 CFATTACH_DECL(ledma, sizeof(struct dma_softc), 111 dmamatch_sbus, dmaattach_sbus, NULL, NULL); 112 113 int 114 dmaprint_sbus(aux, busname) 115 void *aux; 116 const char *busname; 117 { 118 struct sbus_attach_args *sa = aux; 119 bus_space_tag_t t = sa->sa_bustag; 120 struct dma_softc *sc = t->cookie; 121 122 sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */ 123 sbus_print(aux, busname); /* XXX */ 124 sa->sa_bustag = t; /* XXX */ 125 return (UNCONF); 126 } 127 128 int 129 dmamatch_sbus(parent, cf, aux) 130 struct device *parent; 131 struct cfdata *cf; 132 void *aux; 133 { 134 struct sbus_attach_args *sa = aux; 135 136 return (strcmp(cf->cf_name, sa->sa_name) == 0 || 137 strcmp("espdma", sa->sa_name) == 0); 138 } 139 140 void 141 dmaattach_sbus(parent, self, aux) 142 struct device *parent, *self; 143 void *aux; 144 { 145 struct sbus_attach_args *sa = aux; 146 struct dma_softc *dsc = (void *)self; 147 struct lsi64854_softc *sc = &dsc->sc_lsi64854; 148 bus_space_tag_t sbt; 149 int sbusburst, burst; 150 int node; 151 152 node = sa->sa_node; 153 154 sc->sc_bustag = sa->sa_bustag; 155 sc->sc_dmatag = sa->sa_dmatag; 156 157 /* Map registers */ 158 if (sa->sa_npromvaddrs) { 159 sbus_promaddr_to_handle(sa->sa_bustag, 160 sa->sa_promvaddrs[0], &sc->sc_regs); 161 } else { 162 if (sbus_bus_map(sa->sa_bustag, 163 sa->sa_slot, sa->sa_offset, sa->sa_size, 164 0, &sc->sc_regs) != 0) { 165 printf("%s: cannot map registers\n", self->dv_xname); 166 return; 167 } 168 } 169 170 /* 171 * Get transfer burst size from PROM and plug it into the 172 * controller registers. This is needed on the Sun4m; do 173 * others need it too? 174 */ 175 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 176 if (sbusburst == 0) 177 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 178 179 burst = prom_getpropint(node,"burst-sizes", -1); 180 if (burst == -1) 181 /* take SBus burst sizes */ 182 burst = sbusburst; 183 184 /* Clamp at parent's burst sizes */ 185 burst &= sbusburst; 186 sc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 187 (burst & SBUS_BURST_16) ? 16 : 0; 188 189 if (strcmp(sc->sc_dev.dv_cfdata->cf_name, "ledma") == 0) { 190 char *cabletype; 191 u_int32_t csr; 192 /* 193 * Check to see which cable type is currently active and 194 * set the appropriate bit in the ledma csr so that it 195 * gets used. If we didn't netboot, the PROM won't have 196 * the "cable-selection" property; default to TP and then 197 * the user can change it via a "media" option to ifconfig. 198 */ 199 cabletype = prom_getpropstring(node, "cable-selection"); 200 csr = L64854_GCSR(sc); 201 if (strcmp(cabletype, "tpe") == 0) { 202 csr |= E_TP_AUI; 203 } else if (strcmp(cabletype, "aui") == 0) { 204 csr &= ~E_TP_AUI; 205 } else { 206 /* assume TP if nothing there */ 207 csr |= E_TP_AUI; 208 } 209 L64854_SCSR(sc, csr); 210 delay(20000); /* manual says we need a 20ms delay */ 211 sc->sc_channel = L64854_CHANNEL_ENET; 212 } else { 213 sc->sc_channel = L64854_CHANNEL_SCSI; 214 } 215 216 sbus_establish(&dsc->sc_sd, &sc->sc_dev); 217 sbt = dma_alloc_bustag(dsc); 218 lsi64854_attach(sc); 219 220 /* Attach children */ 221 for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) { 222 struct sbus_attach_args sa; 223 sbus_setup_attach_args((struct sbus_softc *)parent, 224 sbt, sc->sc_dmatag, node, &sa); 225 (void) config_found(&sc->sc_dev, (void *)&sa, dmaprint_sbus); 226 sbus_destroy_attach_args(&sa); 227 } 228 } 229 230 void * 231 dmabus_intr_establish(t, pri, level, handler, arg, fastvec) 232 bus_space_tag_t t; 233 int pri; 234 int level; 235 int (*handler) __P((void *)); 236 void *arg; 237 void (*fastvec) __P((void)); /* ignored */ 238 { 239 struct lsi64854_softc *sc = t->cookie; 240 241 /* XXX - for now only le; do esp later */ 242 if (sc->sc_channel == L64854_CHANNEL_ENET) { 243 sc->sc_intrchain = handler; 244 sc->sc_intrchainarg = arg; 245 handler = lsi64854_enet_intr; 246 arg = sc; 247 } 248 return (bus_intr_establish(sc->sc_bustag, pri, level, 249 handler, arg)); 250 } 251 252 bus_space_tag_t 253 dma_alloc_bustag(sc) 254 struct dma_softc *sc; 255 { 256 bus_space_tag_t sbt; 257 258 sbt = (bus_space_tag_t) malloc(sizeof(struct sparc_bus_space_tag), 259 M_DEVBUF, M_NOWAIT|M_ZERO); 260 if (sbt == NULL) 261 return (NULL); 262 263 sbt->cookie = sc; 264 sbt->parent = sc->sc_lsi64854.sc_bustag; 265 sbt->sparc_intr_establish = dmabus_intr_establish; 266 return (sbt); 267 } 268
Indexes created Mon Sep 29 13:09:55 GMT 2025