/* $NetBSD: dma_sbus.c,v 1.41 2026/01/02 23:33:58 nia Exp $ */ /*- * Copyright (c) 1998 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Paul Kranenburg. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Copyright (c) 1994 Peter Galbavy. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: dma_sbus.c,v 1.41 2026/01/02 23:33:58 nia Exp $"); #include <sys/param.h> #include <sys/systm.h> #include <sys/kernel.h> #include <sys/errno.h> #include <sys/device.h> #include <sys/bus.h> #include <sys/intr.h> #include <machine/autoconf.h> #include <dev/sbus/sbusvar.h> #include <dev/ic/lsi64854reg.h> #include <dev/ic/lsi64854var.h> struct dma_softc { struct lsi64854_softc sc_lsi64854; /* base device */ /* possible sbus specific stuff here */ }; int dmamatch_sbus(device_t, cfdata_t, void *); void dmaattach_sbus(device_t, device_t, void *); int dmaprint_sbus(void *, const char *); void *dmabus_intr_establish( bus_space_tag_t, int, /*bus interrupt priority*/ int, /*`device class' level*/ int (*)(void *), /*handler*/ void *, /*handler arg*/ void (*) (void)); /*optional fast trap handler*/ CFATTACH_DECL_NEW(dma_sbus, sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus, NULL, NULL); CFATTACH_DECL_NEW(ledma, sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus, NULL, NULL); int dmaprint_sbus(void *aux, const char *busname) { struct sbus_attach_args *sa = aux; bus_space_tag_t t = sa->sa_bustag; struct dma_softc *sc = t->cookie; sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */ sbus_print(aux, busname); /* XXX */ sa->sa_bustag = t; /* XXX */ return UNCONF; } int dmamatch_sbus(device_t parent, cfdata_t cf, void *aux) { struct sbus_attach_args *sa = aux; return strcmp(cf->cf_name, sa->sa_name) == 0 || strcmp("espdma", sa->sa_name) == 0; } void dmaattach_sbus(device_t parent, device_t self, void *aux) { struct dma_softc *dsc = device_private(self); struct lsi64854_softc *sc = &dsc->sc_lsi64854; struct sbus_attach_args *sa = aux; struct sbus_softc *sbsc = device_private(parent); bus_space_tag_t sbt; int sbusburst, burst; int node; node = sa->sa_node; sc->sc_dev = self; sc->sc_bustag = sa->sa_bustag; sc->sc_dmatag = sa->sa_dmatag; /* Map registers */ if (sa->sa_npromvaddrs) { sbus_promaddr_to_handle(sa->sa_bustag, sa->sa_promvaddrs[0], &sc->sc_regs); } else { if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset, sa->sa_size, 0, &sc->sc_regs) != 0) { aprint_error(": cannot map registers\n"); return; } } /* * Get transfer burst size from PROM and plug it into the * controller registers. This is needed on the Sun4m; do * others need it too? */ sbusburst = sbsc->sc_burst; if (sbusburst == 0) sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ burst = prom_getpropint(node,"burst-sizes", -1); if (burst == -1) /* take SBus burst sizes */ burst = sbusburst; /* Clamp at parent's burst sizes */ burst &= sbusburst; sc->sc_burst = (burst & SBUS_BURST_32) ? 32 : (burst & SBUS_BURST_16) ? 16 : 0; if (device_is_a(self, "ledma")) { char *cabletype; uint32_t csr; /* * Check to see which cable type is currently active and * set the appropriate bit in the ledma csr so that it * gets used. If we didn't netboot, the PROM won't have * the "cable-selection" property; default to TP and then * the user can change it via a "media" option to ifconfig. */ cabletype = prom_getpropstring(node, "cable-selection"); csr = L64854_GCSR(sc); if (strcmp(cabletype, "tpe") == 0) { csr |= E_TP_AUI; } else if (strcmp(cabletype, "aui") == 0) { csr &= ~E_TP_AUI; } else { /* assume TP if nothing there */ csr |= E_TP_AUI; } L64854_SCSR(sc, csr); delay(20000); /* manual says we need a 20ms delay */ sc->sc_channel = L64854_CHANNEL_ENET; } else { sc->sc_channel = L64854_CHANNEL_SCSI; } if ((sbt = bus_space_tag_alloc(sc->sc_bustag, dsc)) == NULL) { aprint_error(": out of memory\n"); return; } sbt->sparc_intr_establish = dmabus_intr_establish; lsi64854_attach(sc); /* Attach children */ devhandle_t selfh = device_handle(self); for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) { struct sbus_attach_args sax; sbus_setup_attach_args(sbsc, sbt, sc->sc_dmatag, node, &sax); (void)config_found(self, (void *)&sax, dmaprint_sbus, CFARGS(.devhandle = prom_node_to_devhandle(selfh, node))); sbus_destroy_attach_args(&sax); } } void * dmabus_intr_establish(bus_space_tag_t t, int pri, int level, int (*handler)(void *), void *arg, void (*fastvec)(void)) { struct lsi64854_softc *sc = t->cookie; /* XXX - for now only le; do esp later */ if (sc->sc_channel == L64854_CHANNEL_ENET) { sc->sc_intrchain = handler; sc->sc_intrchainarg = arg; handler = lsi64854_enet_intr; arg = sc; } return bus_intr_establish(sc->sc_bustag, pri, level, handler, arg); }
