1 /* $OpenBSD: lebuffer.c,v 1.9 2008/06/26 05:42:18 ray Exp $ */ 2 /* $NetBSD: lebuffer.c,v 1.12 2002/03/11 16:00:57 pk Exp $ */ 3 4 /*- 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Paul Kranenburg. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 #include <sys/param.h> 35 #include <sys/systm.h> 36 #include <sys/kernel.h> 37 #include <sys/errno.h> 38 #include <sys/device.h> 39 #include <sys/malloc.h> 40 41 #include <machine/bus.h> 42 #include <machine/autoconf.h> 43 #include <machine/cpu.h> 44 45 #include <dev/sbus/sbusvar.h> 46 #include <dev/sbus/lebuffervar.h> 47 48 int lebufprint(void *, const char *); 49 int lebufmatch(struct device *, void *, void *); 50 void lebufattach(struct device *, struct device *, void *); 51 52 struct cfattach lebuffer_ca = { 53 sizeof(struct lebuf_softc), lebufmatch, lebufattach 54 }; 55 56 int 57 lebufprint(void *aux, const char *busname) 58 { 59 struct sbus_attach_args *sa = aux; 60 bus_space_tag_t t = sa->sa_bustag; 61 struct lebuf_softc *sc = t->cookie; 62 63 sa->sa_bustag = sc->sc_bustag; /* XXX */ 64 sbus_print(aux, busname); /* XXX */ 65 sa->sa_bustag = t; /* XXX */ 66 return (UNCONF); 67 } 68 69 int 70 lebufmatch(struct device *parent, void *vcf, void *aux) 71 { 72 struct sbus_attach_args *sa = aux; 73 struct cfdata *cf = vcf; 74 75 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 76 } 77 78 /* 79 * Attach all the sub-devices we can find 80 */ 81 void 82 lebufattach(struct device *parent, struct device *self, void *aux) 83 { 84 struct sbus_attach_args *sa = aux; 85 struct lebuf_softc *sc = (void *)self; 86 int node; 87 int sbusburst; 88 struct sparc_bus_space_tag *sbt; 89 bus_space_handle_t bh; 90 91 sc->sc_bustag = sa->sa_bustag; 92 sc->sc_dmatag = sa->sa_dmatag; 93 94 if (sbus_bus_map(sa->sa_bustag, 95 sa->sa_slot, sa->sa_offset, sa->sa_size, 96 BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) { 97 printf("%s: attach: cannot map registers\n", self->dv_xname); 98 return; 99 } 100 101 /* 102 * This device's "register space" is just a buffer where the 103 * Lance ring-buffers can be stored. Note the buffer's location 104 * and size, so the `le' driver can pick them up. 105 */ 106 sc->sc_buffer = (void *)bus_space_vaddr(sa->sa_bustag, bh); 107 sc->sc_bufsiz = sa->sa_size; 108 109 node = sc->sc_node = sa->sa_node; 110 111 /* 112 * Get transfer burst size from PROM 113 */ 114 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 115 if (sbusburst == 0) 116 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 117 118 sc->sc_burst = getpropint(node, "burst-sizes", -1); 119 if (sc->sc_burst == -1) 120 /* take SBus burst sizes */ 121 sc->sc_burst = sbusburst; 122 123 /* Clamp at parent's burst sizes */ 124 sc->sc_burst &= sbusburst; 125 126 /* Allocate a bus tag */ 127 sbt = malloc(sizeof(*sbt), M_DEVBUF, M_NOWAIT | M_ZERO); 128 if (sbt == NULL) { 129 printf("%s: attach: out of memory\n", self->dv_xname); 130 return; 131 } 132 133 printf(": %dK memory\n", sc->sc_bufsiz / 1024); 134 135 sbt->cookie = sc; 136 sbt->parent = sc->sc_bustag; 137 sbt->asi = sbt->parent->asi; 138 sbt->sasi = sbt->parent->sasi; 139 140 /* search through children */ 141 for (node = firstchild(node); node; node = nextsibling(node)) { 142 struct sbus_attach_args sa; 143 sbus_setup_attach_args((struct sbus_softc *)parent, 144 sbt, sc->sc_dmatag, node, &sa); 145 (void)config_found(&sc->sc_dev, (void *)&sa, lebufprint); 146 sbus_destroy_attach_args(&sa); 147 } 148 } 149