Annotation of sys/dev/sbus/lebuffer.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: lebuffer.c,v 1.6 2006/06/02 20:00:56 miod 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: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 31: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: #include <sys/cdefs.h>
! 41: #include <sys/param.h>
! 42: #include <sys/systm.h>
! 43: #include <sys/kernel.h>
! 44: #include <sys/errno.h>
! 45: #include <sys/device.h>
! 46: #include <sys/malloc.h>
! 47:
! 48: #include <machine/bus.h>
! 49: #include <machine/autoconf.h>
! 50: #include <machine/cpu.h>
! 51:
! 52: #include <dev/sbus/sbusvar.h>
! 53: #include <dev/sbus/lebuffervar.h>
! 54:
! 55: int lebufprint(void *, const char *);
! 56: int lebufmatch(struct device *, void *, void *);
! 57: void lebufattach(struct device *, struct device *, void *);
! 58:
! 59: struct cfattach lebuffer_ca = {
! 60: sizeof(struct lebuf_softc), lebufmatch, lebufattach
! 61: };
! 62:
! 63: int
! 64: lebufprint(void *aux, const char *busname)
! 65: {
! 66: struct sbus_attach_args *sa = aux;
! 67: bus_space_tag_t t = sa->sa_bustag;
! 68: struct lebuf_softc *sc = t->cookie;
! 69:
! 70: sa->sa_bustag = sc->sc_bustag; /* XXX */
! 71: sbus_print(aux, busname); /* XXX */
! 72: sa->sa_bustag = t; /* XXX */
! 73: return (UNCONF);
! 74: }
! 75:
! 76: int
! 77: lebufmatch(struct device *parent, void *vcf, void *aux)
! 78: {
! 79: struct sbus_attach_args *sa = aux;
! 80: struct cfdata *cf = vcf;
! 81:
! 82: return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0);
! 83: }
! 84:
! 85: /*
! 86: * Attach all the sub-devices we can find
! 87: */
! 88: void
! 89: lebufattach(struct device *parent, struct device *self, void *aux)
! 90: {
! 91: struct sbus_attach_args *sa = aux;
! 92: struct lebuf_softc *sc = (void *)self;
! 93: int node;
! 94: int sbusburst;
! 95: struct sparc_bus_space_tag *sbt;
! 96: bus_space_handle_t bh;
! 97:
! 98: sc->sc_bustag = sa->sa_bustag;
! 99: sc->sc_dmatag = sa->sa_dmatag;
! 100:
! 101: if (sbus_bus_map(sa->sa_bustag,
! 102: sa->sa_slot, sa->sa_offset, sa->sa_size,
! 103: BUS_SPACE_MAP_LINEAR, 0, &bh) != 0) {
! 104: printf("%s: attach: cannot map registers\n", self->dv_xname);
! 105: return;
! 106: }
! 107:
! 108: /*
! 109: * This device's "register space" is just a buffer where the
! 110: * Lance ring-buffers can be stored. Note the buffer's location
! 111: * and size, so the `le' driver can pick them up.
! 112: */
! 113: sc->sc_buffer = (void *)bus_space_vaddr(sa->sa_bustag, bh);
! 114: sc->sc_bufsiz = sa->sa_size;
! 115:
! 116: node = sc->sc_node = sa->sa_node;
! 117:
! 118: /*
! 119: * Get transfer burst size from PROM
! 120: */
! 121: sbusburst = ((struct sbus_softc *)parent)->sc_burst;
! 122: if (sbusburst == 0)
! 123: sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
! 124:
! 125: sc->sc_burst = getpropint(node, "burst-sizes", -1);
! 126: if (sc->sc_burst == -1)
! 127: /* take SBus burst sizes */
! 128: sc->sc_burst = sbusburst;
! 129:
! 130: /* Clamp at parent's burst sizes */
! 131: sc->sc_burst &= sbusburst;
! 132:
! 133: /* Allocate a bus tag */
! 134: sbt = malloc(sizeof(*sbt), M_DEVBUF, M_NOWAIT);
! 135: if (sbt == NULL) {
! 136: printf("%s: attach: out of memory\n", self->dv_xname);
! 137: return;
! 138: }
! 139: bzero(sbt, sizeof(*sbt));
! 140:
! 141: printf(": %dK memory\n", sc->sc_bufsiz / 1024);
! 142:
! 143: sbt->cookie = sc;
! 144: sbt->parent = sc->sc_bustag;
! 145: sbt->asi = sbt->parent->asi;
! 146: sbt->sasi = sbt->parent->sasi;
! 147:
! 148: /* search through children */
! 149: for (node = firstchild(node); node; node = nextsibling(node)) {
! 150: struct sbus_attach_args sa;
! 151: sbus_setup_attach_args((struct sbus_softc *)parent,
! 152: sbt, sc->sc_dmatag, node, &sa);
! 153: (void)config_found(&sc->sc_dev, (void *)&sa, lebufprint);
! 154: sbus_destroy_attach_args(&sa);
! 155: }
! 156: }
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