dma_sbus.c revision 1.31
1 /* $NetBSD: dma_sbus.c,v 1.31 2008/04/13 04:55:53 tsutsui 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 1.31 2008/04/13 04:55:53 tsutsui 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(device_t, cfdata_t, void *); 93 void dmaattach_sbus(device_t, device_t, 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_NEW(dma_sbus, sizeof(struct dma_softc), 106 dmamatch_sbus, dmaattach_sbus, NULL, NULL); 107 108 CFATTACH_DECL_NEW(ledma, sizeof(struct dma_softc), 109 dmamatch_sbus, dmaattach_sbus, NULL, NULL); 110 111 int 112 dmaprint_sbus(void *aux, const char *busname) 113 { 114 struct sbus_attach_args *sa = aux; 115 bus_space_tag_t t = sa->sa_bustag; 116 struct dma_softc *sc = t->cookie; 117 118 sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */ 119 sbus_print(aux, busname); /* XXX */ 120 sa->sa_bustag = t; /* XXX */ 121 return UNCONF; 122 } 123 124 int 125 dmamatch_sbus(struct device *parent, struct cfdata *cf, void *aux) 126 { 127 struct sbus_attach_args *sa = aux; 128 129 return strcmp(cf->cf_name, sa->sa_name) == 0 || 130 strcmp("espdma", sa->sa_name) == 0; 131 } 132 133 void 134 dmaattach_sbus(device_t parent, device_t self, void *aux) 135 { 136 struct dma_softc *dsc = device_private(self); 137 struct lsi64854_softc *sc = &dsc->sc_lsi64854; 138 struct sbus_attach_args *sa = aux; 139 struct sbus_softc *sbsc = device_private(parent); 140 bus_space_tag_t sbt; 141 int sbusburst, burst; 142 int node; 143 144 node = sa->sa_node; 145 146 sc->sc_dev = self; 147 sc->sc_bustag = sa->sa_bustag; 148 sc->sc_dmatag = sa->sa_dmatag; 149 150 /* Map registers */ 151 if (sa->sa_npromvaddrs) { 152 sbus_promaddr_to_handle(sa->sa_bustag, 153 sa->sa_promvaddrs[0], &sc->sc_regs); 154 } else { 155 if (sbus_bus_map(sa->sa_bustag, 156 sa->sa_slot, sa->sa_offset, sa->sa_size, 157 0, &sc->sc_regs) != 0) { 158 aprint_error(": cannot map registers\n"); 159 return; 160 } 161 } 162 163 /* 164 * Get transfer burst size from PROM and plug it into the 165 * controller registers. This is needed on the Sun4m; do 166 * others need it too? 167 */ 168 sbusburst = sbsc->sc_burst; 169 if (sbusburst == 0) 170 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 171 172 burst = prom_getpropint(node,"burst-sizes", -1); 173 if (burst == -1) 174 /* take SBus burst sizes */ 175 burst = sbusburst; 176 177 /* Clamp at parent's burst sizes */ 178 burst &= sbusburst; 179 sc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 180 (burst & SBUS_BURST_16) ? 16 : 0; 181 182 if (device_is_a(self, "ledma")) { 183 char *cabletype; 184 uint32_t csr; 185 /* 186 * Check to see which cable type is currently active and 187 * set the appropriate bit in the ledma csr so that it 188 * gets used. If we didn't netboot, the PROM won't have 189 * the "cable-selection" property; default to TP and then 190 * the user can change it via a "media" option to ifconfig. 191 */ 192 cabletype = prom_getpropstring(node, "cable-selection"); 193 csr = L64854_GCSR(sc); 194 if (strcmp(cabletype, "tpe") == 0) { 195 csr |= E_TP_AUI; 196 } else if (strcmp(cabletype, "aui") == 0) { 197 csr &= ~E_TP_AUI; 198 } else { 199 /* assume TP if nothing there */ 200 csr |= E_TP_AUI; 201 } 202 L64854_SCSR(sc, csr); 203 delay(20000); /* manual says we need a 20ms delay */ 204 sc->sc_channel = L64854_CHANNEL_ENET; 205 } else { 206 sc->sc_channel = L64854_CHANNEL_SCSI; 207 } 208 209 sbus_establish(&dsc->sc_sd, self); 210 if ((sbt = bus_space_tag_alloc(sc->sc_bustag, dsc)) == NULL) { 211 aprint_error(": out of memory\n"); 212 return; 213 } 214 sbt->sparc_intr_establish = dmabus_intr_establish; 215 lsi64854_attach(sc); 216 217 /* Attach children */ 218 for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) { 219 struct sbus_attach_args sax; 220 sbus_setup_attach_args(sbsc, sbt, sc->sc_dmatag, node, &sax); 221 (void)config_found(self, (void *)&sax, dmaprint_sbus); 222 sbus_destroy_attach_args(&sax); 223 } 224 } 225 226 void * 227 dmabus_intr_establish(bus_space_tag_t t, int pri, int level, 228 int (*handler)(void *), void *arg, void (*fastvec)(void)) 229 { 230 struct lsi64854_softc *sc = t->cookie; 231 232 /* XXX - for now only le; do esp later */ 233 if (sc->sc_channel == L64854_CHANNEL_ENET) { 234 sc->sc_intrchain = handler; 235 sc->sc_intrchainarg = arg; 236 handler = lsi64854_enet_intr; 237 arg = sc; 238 } 239 return bus_intr_establish(sc->sc_bustag, pri, level, handler, arg); 240 } 241
Indexes created Tue Sep 30 10:09:55 GMT 2025