1 /* $NetBSD: dma_sbus.c,v 1.41 2026/01/02 23:33:58 nia 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. The name of the author may not be used to endorse or promote products 44 * derived from this software without specific prior written permission. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58 #include <sys/cdefs.h> 59 __KERNEL_RCSID(0, "$NetBSD: dma_sbus.c,v 1.41 2026/01/02 23:33:58 nia Exp $"); 60 61 #include <sys/param.h> 62 #include <sys/systm.h> 63 #include <sys/kernel.h> 64 #include <sys/errno.h> 65 #include <sys/device.h> 66 67 #include <sys/bus.h> 68 #include <sys/intr.h> 69 #include <machine/autoconf.h> 70 71 #include <dev/sbus/sbusvar.h> 72 73 #include <dev/ic/lsi64854reg.h> 74 #include <dev/ic/lsi64854var.h> 75 76 struct dma_softc { 77 struct lsi64854_softc sc_lsi64854; /* base device */ 78 /* possible sbus specific stuff here */ 79 }; 80 81 int dmamatch_sbus(device_t, cfdata_t, void *); 82 void dmaattach_sbus(device_t, device_t, void *); 83 84 int dmaprint_sbus(void *, const char *); 85 86 void *dmabus_intr_establish( 87 bus_space_tag_t, 88 int, /*bus interrupt priority*/ 89 int, /*`device class' level*/ 90 int (*)(void *), /*handler*/ 91 void *, /*handler arg*/ 92 void (*) (void)); /*optional fast trap handler*/ 93 94 CFATTACH_DECL_NEW(dma_sbus, sizeof(struct dma_softc), 95 dmamatch_sbus, dmaattach_sbus, NULL, NULL); 96 97 CFATTACH_DECL_NEW(ledma, sizeof(struct dma_softc), 98 dmamatch_sbus, dmaattach_sbus, NULL, NULL); 99 100 int 101 dmaprint_sbus(void *aux, const char *busname) 102 { 103 struct sbus_attach_args *sa = aux; 104 bus_space_tag_t t = sa->sa_bustag; 105 struct dma_softc *sc = t->cookie; 106 107 sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */ 108 sbus_print(aux, busname); /* XXX */ 109 sa->sa_bustag = t; /* XXX */ 110 return UNCONF; 111 } 112 113 int 114 dmamatch_sbus(device_t parent, cfdata_t cf, void *aux) 115 { 116 struct sbus_attach_args *sa = aux; 117 118 return strcmp(cf->cf_name, sa->sa_name) == 0 || 119 strcmp("espdma", sa->sa_name) == 0; 120 } 121 122 void 123 dmaattach_sbus(device_t parent, device_t self, void *aux) 124 { 125 struct dma_softc *dsc = device_private(self); 126 struct lsi64854_softc *sc = &dsc->sc_lsi64854; 127 struct sbus_attach_args *sa = aux; 128 struct sbus_softc *sbsc = device_private(parent); 129 bus_space_tag_t sbt; 130 int sbusburst, burst; 131 int node; 132 133 node = sa->sa_node; 134 135 sc->sc_dev = self; 136 sc->sc_bustag = sa->sa_bustag; 137 sc->sc_dmatag = sa->sa_dmatag; 138 139 /* Map registers */ 140 if (sa->sa_npromvaddrs) { 141 sbus_promaddr_to_handle(sa->sa_bustag, 142 sa->sa_promvaddrs[0], &sc->sc_regs); 143 } else { 144 if (sbus_bus_map(sa->sa_bustag, 145 sa->sa_slot, sa->sa_offset, sa->sa_size, 146 0, &sc->sc_regs) != 0) { 147 aprint_error(": cannot map registers\n"); 148 return; 149 } 150 } 151 152 /* 153 * Get transfer burst size from PROM and plug it into the 154 * controller registers. This is needed on the Sun4m; do 155 * others need it too? 156 */ 157 sbusburst = sbsc->sc_burst; 158 if (sbusburst == 0) 159 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 160 161 burst = prom_getpropint(node,"burst-sizes", -1); 162 if (burst == -1) 163 /* take SBus burst sizes */ 164 burst = sbusburst; 165 166 /* Clamp at parent's burst sizes */ 167 burst &= sbusburst; 168 sc->sc_burst = (burst & SBUS_BURST_32) ? 32 : 169 (burst & SBUS_BURST_16) ? 16 : 0; 170 171 if (device_is_a(self, "ledma")) { 172 char *cabletype; 173 uint32_t csr; 174 /* 175 * Check to see which cable type is currently active and 176 * set the appropriate bit in the ledma csr so that it 177 * gets used. If we didn't netboot, the PROM won't have 178 * the "cable-selection" property; default to TP and then 179 * the user can change it via a "media" option to ifconfig. 180 */ 181 cabletype = prom_getpropstring(node, "cable-selection"); 182 csr = L64854_GCSR(sc); 183 if (strcmp(cabletype, "tpe") == 0) { 184 csr |= E_TP_AUI; 185 } else if (strcmp(cabletype, "aui") == 0) { 186 csr &= ~E_TP_AUI; 187 } else { 188 /* assume TP if nothing there */ 189 csr |= E_TP_AUI; 190 } 191 L64854_SCSR(sc, csr); 192 delay(20000); /* manual says we need a 20ms delay */ 193 sc->sc_channel = L64854_CHANNEL_ENET; 194 } else { 195 sc->sc_channel = L64854_CHANNEL_SCSI; 196 } 197 198 if ((sbt = bus_space_tag_alloc(sc->sc_bustag, dsc)) == NULL) { 199 aprint_error(": out of memory\n"); 200 return; 201 } 202 sbt->sparc_intr_establish = dmabus_intr_establish; 203 lsi64854_attach(sc); 204 205 /* Attach children */ 206 devhandle_t selfh = device_handle(self); 207 for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) { 208 struct sbus_attach_args sax; 209 sbus_setup_attach_args(sbsc, sbt, sc->sc_dmatag, node, &sax); 210 (void)config_found(self, (void *)&sax, dmaprint_sbus, 211 CFARGS(.devhandle = prom_node_to_devhandle(selfh, node))); 212 sbus_destroy_attach_args(&sax); 213 } 214 } 215 216 void * 217 dmabus_intr_establish(bus_space_tag_t t, int pri, int level, 218 int (*handler)(void *), void *arg, void (*fastvec)(void)) 219 { 220 struct lsi64854_softc *sc = t->cookie; 221 222 /* XXX - for now only le; do esp later */ 223 if (sc->sc_channel == L64854_CHANNEL_ENET) { 224 sc->sc_intrchain = handler; 225 sc->sc_intrchainarg = arg; 226 handler = lsi64854_enet_intr; 227 arg = sc; 228 } 229 return bus_intr_establish(sc->sc_bustag, pri, level, handler, arg); 230 } 231
Indexes created Sun Oct 25 00:26:45 UTC 2026