dma_sbus.c revision 1.29
1 /* $NetBSD: dma_sbus.c,v 1.29 2007/10/19 12:01:10 ad 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 1.29 2007/10/19 12:01:10 ad 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 <sys/bus.h> 79 #include <sys/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(struct device *, struct cfdata *, void *); 93 void dmaattach_sbus(struct device *, struct device *, void *); 94 95 int dmaprint_sbus(void *, const char *); 96 97 void *dmabus_intr_establish( 98 bus_space_tag_t, 99 int, /*bus interrupt priority*/ 100 int, /*`device class' level*/ 101 int (*)(void *), /*handler*/ 102 void *, /*handler arg*/ 103 void (*) (void)); /*optional fast trap handler*/ 104 105 CFATTACH_DECL(dma_sbus, sizeof(struct dma_softc), 106 dmamatch_sbus, dmaattach_sbus, NULL, NULL); 107 108 CFATTACH_DECL(ledma, sizeof(struct dma_softc), 109 dmamatch_sbus, dmaattach_sbus, NULL, NULL); 110 111 int 112 dmaprint_sbus(aux, busname) 113 void *aux; 114 const char *busname; 115 { 116 struct sbus_attach_args *sa = aux; 117 bus_space_tag_t t = sa->sa_bustag; 118 struct dma_softc *sc = t->cookie; 119 120 sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */ 121 sbus_print(aux, busname); /* XXX */ 122 sa->sa_bustag = t; /* XXX */ 123 return (UNCONF); 124 } 125 126 int 127 dmamatch_sbus(parent, cf, aux) 128 struct device *parent; 129 struct cfdata *cf; 130 void *aux; 131 { 132 struct sbus_attach_args *sa = aux; 133 134 return (strcmp(cf->cf_name, sa->sa_name) == 0 || 135 strcmp("espdma", sa->sa_name) == 0); 136 } 137 138 void 139 dmaattach_sbus(parent, self, aux) 140 struct device *parent, *self; 141 void *aux; 142 { 143 struct sbus_attach_args *sa = aux; 144 struct dma_softc *dsc = (void *)self; 145 struct lsi64854_softc *sc = &dsc->sc_lsi64854; 146 bus_space_tag_t sbt; 147 int sbusburst, burst; 148 int node; 149 150 node = sa->sa_node; 151 152 sc->sc_bustag = sa->sa_bustag; 153 sc->sc_dmatag = sa->sa_dmatag; 154 155 /* Map registers */ 156 if (sa->sa_npromvaddrs) { 157 sbus_promaddr_to_handle(sa->sa_bustag, 158 sa->sa_promvaddrs[0], &sc->sc_regs); 159 } else { 160 if (sbus_bus_map(sa->sa_bustag, 161 sa->sa_slot, sa->sa_offset, sa->sa_size, 162 0, &sc->sc_regs) != 0) { 163 printf("%s: cannot map registers\n", self->dv_xname); 164 return; 165 } 166 } 167 168 /* 169 * Get transfer burst size from PROM and plug it into the 170 * controller registers. This is needed on the Sun4m; do 171 * others need it too? 172 */ 173 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 174 if (sbusburst == 0) 175 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 176 177 burst = prom_getpropint(node,"burst-sizes", -1); 178 if (burst == -1) 179 /* take SBus burst sizes */ 180 burst = sbusburst; 181 182 /* Clamp at parent's burst sizes */ 183 burst &= sbusburst; 184 sc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 185 (burst & SBUS_BURST_16) ? 16 : 0; 186 187 if (device_is_a(&sc->sc_dev, "ledma")) { 188 char *cabletype; 189 u_int32_t csr; 190 /* 191 * Check to see which cable type is currently active and 192 * set the appropriate bit in the ledma csr so that it 193 * gets used. If we didn't netboot, the PROM won't have 194 * the "cable-selection" property; default to TP and then 195 * the user can change it via a "media" option to ifconfig. 196 */ 197 cabletype = prom_getpropstring(node, "cable-selection"); 198 csr = L64854_GCSR(sc); 199 if (strcmp(cabletype, "tpe") == 0) { 200 csr |= E_TP_AUI; 201 } else if (strcmp(cabletype, "aui") == 0) { 202 csr &= ~E_TP_AUI; 203 } else { 204 /* assume TP if nothing there */ 205 csr |= E_TP_AUI; 206 } 207 L64854_SCSR(sc, csr); 208 delay(20000); /* manual says we need a 20ms delay */ 209 sc->sc_channel = L64854_CHANNEL_ENET; 210 } else { 211 sc->sc_channel = L64854_CHANNEL_SCSI; 212 } 213 214 sbus_establish(&dsc->sc_sd, &sc->sc_dev); 215 if ((sbt = bus_space_tag_alloc(sc->sc_bustag, dsc)) == NULL) { 216 printf("%s: attach: out of memory\n", self->dv_xname); 217 return; 218 } 219 sbt->sparc_intr_establish = dmabus_intr_establish; 220 lsi64854_attach(sc); 221 222 /* Attach children */ 223 for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) { 224 struct sbus_attach_args sax; 225 sbus_setup_attach_args((struct sbus_softc *)parent, 226 sbt, sc->sc_dmatag, node, &sax); 227 (void) config_found(&sc->sc_dev, (void *)&sax, dmaprint_sbus); 228 sbus_destroy_attach_args(&sax); 229 } 230 } 231 232 void * 233 dmabus_intr_establish(t, pri, level, handler, arg, fastvec) 234 bus_space_tag_t t; 235 int pri; 236 int level; 237 int (*handler)(void *); 238 void *arg; 239 void (*fastvec)(void); /* ignored */ 240 { 241 struct lsi64854_softc *sc = t->cookie; 242 243 /* XXX - for now only le; do esp later */ 244 if (sc->sc_channel == L64854_CHANNEL_ENET) { 245 sc->sc_intrchain = handler; 246 sc->sc_intrchainarg = arg; 247 handler = lsi64854_enet_intr; 248 arg = sc; 249 } 250 return (bus_intr_establish(sc->sc_bustag, pri, level, 251 handler, arg)); 252 } 253
Indexes created Mon Sep 29 15:09:53 GMT 2025