1 /* $NetBSD: lebuffer.c,v 1.9 2001/11/13 06:58:17 lukem 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 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: lebuffer.c,v 1.9 2001/11/13 06:58:17 lukem Exp $"); 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/errno.h> 47 #include <sys/device.h> 48 #include <sys/malloc.h> 49 50 #include <machine/bus.h> 51 #include <machine/autoconf.h> 52 #include <machine/cpu.h> 53 54 #include <dev/sbus/sbusvar.h> 55 #include <dev/sbus/lebuffervar.h> 56 57 int lebufprint __P((void *, const char *)); 58 int lebufmatch __P((struct device *, struct cfdata *, void *)); 59 void lebufattach __P((struct device *, struct device *, void *)); 60 61 struct cfattach lebuffer_ca = { 62 sizeof(struct lebuf_softc), lebufmatch, lebufattach 63 }; 64 65 int 66 lebufprint(aux, busname) 67 void *aux; 68 const char *busname; 69 { 70 struct sbus_attach_args *sa = aux; 71 bus_space_tag_t t = sa->sa_bustag; 72 struct lebuf_softc *sc = t->cookie; 73 74 sa->sa_bustag = sc->sc_bustag; /* XXX */ 75 sbus_print(aux, busname); /* XXX */ 76 sa->sa_bustag = t; /* XXX */ 77 return (UNCONF); 78 } 79 80 int 81 lebufmatch(parent, cf, aux) 82 struct device *parent; 83 struct cfdata *cf; 84 void *aux; 85 { 86 struct sbus_attach_args *sa = aux; 87 88 return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0); 89 } 90 91 /* 92 * Attach all the sub-devices we can find 93 */ 94 void 95 lebufattach(parent, self, aux) 96 struct device *parent, *self; 97 void *aux; 98 { 99 struct sbus_attach_args *sa = aux; 100 struct lebuf_softc *sc = (void *)self; 101 int node; 102 int sbusburst; 103 bus_space_tag_t sbt; 104 bus_space_handle_t bh; 105 106 sc->sc_bustag = sa->sa_bustag; 107 sc->sc_dmatag = sa->sa_dmatag; 108 109 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, 110 sa->sa_offset, 111 sa->sa_size, 112 0, 0, &bh) != 0) { 113 printf("%s: attach: cannot map registers\n", self->dv_xname); 114 return; 115 } 116 117 /* 118 * This device's "register space" is just a buffer where the 119 * Lance ring-buffers can be stored. Note the buffer's location 120 * and size, so the `le' driver can pick them up. 121 */ 122 sc->sc_buffer = (caddr_t)(u_long)bh; 123 sc->sc_bufsiz = sa->sa_size; 124 125 node = sc->sc_node = sa->sa_node; 126 127 /* 128 * Get transfer burst size from PROM 129 */ 130 sbusburst = ((struct sbus_softc *)parent)->sc_burst; 131 if (sbusburst == 0) 132 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */ 133 134 sc->sc_burst = PROM_getpropint(node, "burst-sizes", -1); 135 if (sc->sc_burst == -1) 136 /* take SBus burst sizes */ 137 sc->sc_burst = sbusburst; 138 139 /* Clamp at parent's burst sizes */ 140 sc->sc_burst &= sbusburst; 141 142 sbus_establish(&sc->sc_sd, &sc->sc_dev); 143 144 /* Allocate a bus tag */ 145 sbt = (bus_space_tag_t) 146 malloc(sizeof(struct sparc_bus_space_tag), M_DEVBUF, M_NOWAIT); 147 if (sbt == NULL) { 148 printf("%s: attach: out of memory\n", self->dv_xname); 149 return; 150 } 151 152 printf(": %dK memory\n", sc->sc_bufsiz / 1024); 153 154 bzero(sbt, sizeof *sbt); 155 sbt->cookie = sc; 156 sbt->parent = sc->sc_bustag; 157 158 /* search through children */ 159 for (node = firstchild(node); node; node = nextsibling(node)) { 160 struct sbus_attach_args sa; 161 sbus_setup_attach_args((struct sbus_softc *)parent, 162 sbt, sc->sc_dmatag, node, &sa); 163 (void)config_found(&sc->sc_dev, (void *)&sa, lebufprint); 164 sbus_destroy_attach_args(&sa); 165 } 166 } 167