1 /* $NetBSD: dma_sbus.c,v 1.40 2022/09/25 18:03:04 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 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1994 Peter Galbavy. All rights reserved. 34 * 35 * Redistribution and use in source and binary forms, with or without 36 * modification, are permitted provided that the following conditions 37 * are met: 38 * 1. Redistributions of source code must retain the above copyright 39 * notice, this list of conditions and the following disclaimer. 40 * 2. Redistributions in binary form must reproduce the above copyright 41 * notice, this list of conditions and the following disclaimer in the 42 * documentation and/or other materials provided with the distribution. 43 * 3. All advertising materials mentioning features or use of this software 44 * must display the following acknowledgement: 45 * This product includes software developed by Peter Galbavy. 46 * 4. The name of the author may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: dma_sbus.c,v 1.40 2022/09/25 18:03:04 thorpej Exp $"); 63 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/kernel.h> 67 #include <sys/errno.h> 68 #include <sys/device.h> 69 70 #include <sys/bus.h> 71 #include <sys/intr.h> 72 #include <machine/autoconf.h> 73 74 #include <dev/sbus/sbusvar.h> 75 76 #include <dev/ic/lsi64854reg.h> 77 #include <dev/ic/lsi64854var.h> 78 79 struct dma_softc { 80 struct lsi64854_softc sc_lsi64854; /* base device */ 81 /* possible sbus specific stuff here */ 82 }; 83 84 int dmamatch_sbus(device_t, cfdata_t, void *); 85 void dmaattach_sbus(device_t, device_t, void *); 86 87 int dmaprint_sbus(void *, const char *); 88 89 void *dmabus_intr_establish( 90 bus_space_tag_t, 91 int, /*bus interrupt priority*/ 92 int, /*`device class' level*/ 93 int (*)(void *), /*handler*/ 94 void *, /*handler arg*/ 95 void (*) (void)); /*optional fast trap handler*/ 96 97 CFATTACH_DECL_NEW(dma_sbus, sizeof(struct dma_softc), 98 dmamatch_sbus, dmaattach_sbus, NULL, NULL); 99 100 CFATTACH_DECL_NEW(ledma, sizeof(struct dma_softc), 101 dmamatch_sbus, dmaattach_sbus, NULL, NULL); 102 103 int 104 dmaprint_sbus(void *aux, const char *busname) 105 { 106 struct sbus_attach_args *sa = aux; 107 bus_space_tag_t t = sa->sa_bustag; 108 struct dma_softc *sc = t->cookie; 109 110 sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */ 111 sbus_print(aux, busname); /* XXX */ 112 sa->sa_bustag = t; /* XXX */ 113 return UNCONF; 114 } 115 116 int 117 dmamatch_sbus(device_t parent, cfdata_t cf, void *aux) 118 { 119 struct sbus_attach_args *sa = aux; 120 121 return strcmp(cf->cf_name, sa->sa_name) == 0 || 122 strcmp("espdma", sa->sa_name) == 0; 123 } 124 125 void 126 dmaattach_sbus(device_t parent, device_t self, void *aux) 127 { 128 struct dma_softc *dsc = device_private(self); 129 struct lsi64854_softc *sc = &dsc->sc_lsi64854; 130 struct sbus_attach_args *sa = aux; 131 struct sbus_softc *sbsc = device_private(parent); 132 bus_space_tag_t sbt; 133 int sbusburst, burst; 134 int node; 135 136 node = sa->sa_node; 137 138 sc->sc_dev = self; 139 sc->sc_bustag = sa->sa_bustag; 140 sc->sc_dmatag = sa->sa_dmatag; 141 142 /* Map registers */ 143 if (sa->sa_npromvaddrs) { 144 sbus_promaddr_to_handle(sa->sa_bustag, 145 sa->sa_promvaddrs[0], &sc->sc_regs); 146 } else { 147 if (sbus_bus_map(sa->sa_bustag, 148 sa->sa_slot, sa->sa_offset, sa->sa_size, 149 0, &sc->sc_regs) != 0) { 150 aprint_error(": cannot map registers\n"); 151 return; 152 } 153 } 154 155 /* 156 * Get transfer burst size from PROM and plug it into the 157 * controller registers. This is needed on the Sun4m; do 158 * others need it too? 159 */ 160 sbusburst = sbsc->sc_burst; 161 if (sbusburst == 0) 162 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 163 164 burst = prom_getpropint(node,"burst-sizes", -1); 165 if (burst == -1) 166 /* take SBus burst sizes */ 167 burst = sbusburst; 168 169 /* Clamp at parent's burst sizes */ 170 burst &= sbusburst; 171 sc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 172 (burst & SBUS_BURST_16) ? 16 : 0; 173 174 if (device_is_a(self, "ledma")) { 175 char *cabletype; 176 uint32_t csr; 177 /* 178 * Check to see which cable type is currently active and 179 * set the appropriate bit in the ledma csr so that it 180 * gets used. If we didn't netboot, the PROM won't have 181 * the "cable-selection" property; default to TP and then 182 * the user can change it via a "media" option to ifconfig. 183 */ 184 cabletype = prom_getpropstring(node, "cable-selection"); 185 csr = L64854_GCSR(sc); 186 if (strcmp(cabletype, "tpe") == 0) { 187 csr |= E_TP_AUI; 188 } else if (strcmp(cabletype, "aui") == 0) { 189 csr &= ~E_TP_AUI; 190 } else { 191 /* assume TP if nothing there */ 192 csr |= E_TP_AUI; 193 } 194 L64854_SCSR(sc, csr); 195 delay(20000); /* manual says we need a 20ms delay */ 196 sc->sc_channel = L64854_CHANNEL_ENET; 197 } else { 198 sc->sc_channel = L64854_CHANNEL_SCSI; 199 } 200 201 if ((sbt = bus_space_tag_alloc(sc->sc_bustag, dsc)) == NULL) { 202 aprint_error(": out of memory\n"); 203 return; 204 } 205 sbt->sparc_intr_establish = dmabus_intr_establish; 206 lsi64854_attach(sc); 207 208 /* Attach children */ 209 devhandle_t selfh = device_handle(self); 210 for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) { 211 struct sbus_attach_args sax; 212 sbus_setup_attach_args(sbsc, sbt, sc->sc_dmatag, node, &sax); 213 (void)config_found(self, (void *)&sax, dmaprint_sbus, 214 CFARGS(.devhandle = prom_node_to_devhandle(selfh, node))); 215 sbus_destroy_attach_args(&sax); 216 } 217 } 218 219 void * 220 dmabus_intr_establish(bus_space_tag_t t, int pri, int level, 221 int (*handler)(void *), void *arg, void (*fastvec)(void)) 222 { 223 struct lsi64854_softc *sc = t->cookie; 224 225 /* XXX - for now only le; do esp later */ 226 if (sc->sc_channel == L64854_CHANNEL_ENET) { 227 sc->sc_intrchain = handler; 228 sc->sc_intrchainarg = arg; 229 handler = lsi64854_enet_intr; 230 arg = sc; 231 } 232 return bus_intr_establish(sc->sc_bustag, pri, level, handler, arg); 233 } 234
Indexes created Sat Sep 20 22:09:52 GMT 2025