Annotation of sys/dev/sbus/dma_sbus.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: dma_sbus.c,v 1.13 2006/06/02 20:00:56 miod Exp $ */
! 2: /* $NetBSD: dma_sbus.c,v 1.5 2000/07/09 20:57:42 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: /*
! 41: * Copyright (c) 1994 Peter Galbavy. All rights reserved.
! 42: *
! 43: * Redistribution and use in source and binary forms, with or without
! 44: * modification, are permitted provided that the following conditions
! 45: * are met:
! 46: * 1. Redistributions of source code must retain the above copyright
! 47: * notice, this list of conditions and the following disclaimer.
! 48: * 2. Redistributions in binary form must reproduce the above copyright
! 49: * notice, this list of conditions and the following disclaimer in the
! 50: * documentation and/or other materials provided with the distribution.
! 51: *
! 52: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 53: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 54: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 55: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 56: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 57: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 58: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 59: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 60: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 61: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 62: */
! 63:
! 64: #include <sys/types.h>
! 65: #include <sys/param.h>
! 66: #include <sys/systm.h>
! 67: #include <sys/kernel.h>
! 68: #include <sys/errno.h>
! 69: #include <sys/device.h>
! 70: #include <sys/malloc.h>
! 71:
! 72: #include <machine/bus.h>
! 73: #include <machine/intr.h>
! 74: #include <machine/autoconf.h>
! 75:
! 76: #include <dev/sbus/sbusvar.h>
! 77:
! 78: #include <dev/ic/lsi64854reg.h>
! 79: #include <dev/ic/lsi64854var.h>
! 80:
! 81: #include <scsi/scsi_all.h>
! 82: #include <scsi/scsiconf.h>
! 83:
! 84: #include <dev/ic/ncr53c9xreg.h>
! 85: #include <dev/ic/ncr53c9xvar.h>
! 86:
! 87: struct dma_softc {
! 88: struct lsi64854_softc sc_lsi64854; /* base device */
! 89: };
! 90:
! 91: int dmamatch_sbus(struct device *, void *, void *);
! 92: void dmaattach_sbus(struct device *, struct device *, void *);
! 93:
! 94: int dmaprint_sbus(void *, const char *);
! 95:
! 96: void *dmabus_intr_establish(
! 97: bus_space_tag_t,
! 98: bus_space_tag_t,
! 99: int, /*bus interrupt priority*/
! 100: int, /*`device class' level*/
! 101: int, /*flags*/
! 102: int (*)(void *), /*handler*/
! 103: void *, /*handler arg*/
! 104: const char *); /*what*/
! 105:
! 106: static bus_space_tag_t dma_alloc_bustag(struct dma_softc *sc);
! 107:
! 108: struct cfattach dma_sbus_ca = {
! 109: sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus
! 110: };
! 111:
! 112: struct cfattach ledma_ca = {
! 113: sizeof(struct dma_softc), dmamatch_sbus, dmaattach_sbus
! 114: };
! 115:
! 116: struct cfdriver ledma_cd = {
! 117: NULL, "ledma", DV_DULL
! 118: };
! 119:
! 120: struct cfdriver dma_cd = {
! 121: NULL, "dma", DV_DULL
! 122: };
! 123:
! 124: int
! 125: dmaprint_sbus(void *aux, const char *busname)
! 126: {
! 127: struct sbus_attach_args *sa = aux;
! 128: bus_space_tag_t t = sa->sa_bustag;
! 129: struct dma_softc *sc = t->cookie;
! 130:
! 131: sa->sa_bustag = sc->sc_lsi64854.sc_bustag; /* XXX */
! 132: sbus_print(aux, busname); /* XXX */
! 133: sa->sa_bustag = t; /* XXX */
! 134: return (UNCONF);
! 135: }
! 136:
! 137: int
! 138: dmamatch_sbus(struct device *parent, void *vcf, void *aux)
! 139: {
! 140: struct cfdata *cf = vcf;
! 141: struct sbus_attach_args *sa = aux;
! 142:
! 143: return (strcmp(cf->cf_driver->cd_name, sa->sa_name) == 0 ||
! 144: strcmp("espdma", sa->sa_name) == 0);
! 145: }
! 146:
! 147: void
! 148: dmaattach_sbus(parent, self, aux)
! 149: struct device *parent, *self;
! 150: void *aux;
! 151: {
! 152: struct sbus_attach_args *sa = aux;
! 153: struct dma_softc *dsc = (void *)self;
! 154: struct lsi64854_softc *sc = &dsc->sc_lsi64854;
! 155: bus_space_handle_t bh;
! 156: bus_space_tag_t sbt;
! 157: int sbusburst, burst;
! 158: int node;
! 159:
! 160: node = sa->sa_node;
! 161:
! 162: sc->sc_bustag = sa->sa_bustag;
! 163: sc->sc_dmatag = sa->sa_dmatag;
! 164:
! 165: /* Map registers */
! 166: if (sa->sa_npromvaddrs != 0) {
! 167: if (sbus_bus_map(sa->sa_bustag, 0,
! 168: sa->sa_promvaddrs[0],
! 169: sa->sa_size, /* ???? */
! 170: BUS_SPACE_MAP_PROMADDRESS,
! 171: 0, &bh) != 0) {
! 172: printf("%s: cannot map registers\n", self->dv_xname);
! 173: return;
! 174: }
! 175: } else if (sbus_bus_map(sa->sa_bustag, sa->sa_slot,
! 176: sa->sa_offset,
! 177: sa->sa_size,
! 178: 0, 0, &bh) != 0) {
! 179: printf("%s: cannot map registers\n", self->dv_xname);
! 180: return;
! 181: }
! 182: sc->sc_regs = bh;
! 183:
! 184: /*
! 185: * Get transfer burst size from PROM and plug it into the
! 186: * controller registers. This is needed on the Sun4m; do
! 187: * others need it too?
! 188: */
! 189: sbusburst = ((struct sbus_softc *)parent)->sc_burst;
! 190: if (sbusburst == 0)
! 191: sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
! 192:
! 193: burst = getpropint(node,"burst-sizes", -1);
! 194: if (burst == -1)
! 195: /* take SBus burst sizes */
! 196: burst = sbusburst;
! 197:
! 198: /* Clamp at parent's burst sizes */
! 199: burst &= sbusburst;
! 200: sc->sc_burst = (burst & SBUS_BURST_32) ? 32 :
! 201: (burst & SBUS_BURST_16) ? 16 : 0;
! 202:
! 203: if (sc->sc_dev.dv_cfdata->cf_attach == &ledma_ca) {
! 204: char *cabletype;
! 205: u_int32_t csr;
! 206: /*
! 207: * Check to see which cable type is currently active and
! 208: * set the appropriate bit in the ledma csr so that it
! 209: * gets used. If we didn't netboot, the PROM won't have
! 210: * the "cable-selection" property; default to TP and then
! 211: * the user can change it via a "media" option to ifconfig.
! 212: */
! 213: cabletype = getpropstring(node, "cable-selection");
! 214: csr = L64854_GCSR(sc);
! 215: if (strcmp(cabletype, "tpe") == 0) {
! 216: csr |= E_TP_AUI;
! 217: } else if (strcmp(cabletype, "aui") == 0) {
! 218: csr &= ~E_TP_AUI;
! 219: } else {
! 220: /* assume TP if nothing there */
! 221: csr |= E_TP_AUI;
! 222: }
! 223: L64854_SCSR(sc, csr);
! 224: delay(20000); /* manual says we need a 20ms delay */
! 225: sc->sc_channel = L64854_CHANNEL_ENET;
! 226: } else {
! 227: sc->sc_channel = L64854_CHANNEL_SCSI;
! 228: }
! 229:
! 230: sbt = dma_alloc_bustag(dsc);
! 231: if (lsi64854_attach(sc) != 0)
! 232: return;
! 233:
! 234: /* Attach children */
! 235: for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) {
! 236: struct sbus_attach_args sa;
! 237: sbus_setup_attach_args((struct sbus_softc *)parent,
! 238: sbt, sc->sc_dmatag, node, &sa);
! 239: (void) config_found(&sc->sc_dev, (void *)&sa, dmaprint_sbus);
! 240: sbus_destroy_attach_args(&sa);
! 241: }
! 242: }
! 243:
! 244: void *
! 245: dmabus_intr_establish(
! 246: bus_space_tag_t t,
! 247: bus_space_tag_t t0,
! 248: int pri,
! 249: int level,
! 250: int flags,
! 251: int (*handler)(void *),
! 252: void *arg,
! 253: const char *what)
! 254: {
! 255: struct lsi64854_softc *sc = t->cookie;
! 256:
! 257: /* XXX - for now only le; do esp later */
! 258: if (sc->sc_channel == L64854_CHANNEL_ENET) {
! 259: sc->sc_intrchain = handler;
! 260: sc->sc_intrchainarg = arg;
! 261: handler = lsi64854_enet_intr;
! 262: arg = sc;
! 263: }
! 264:
! 265: for (t = t->parent; t; t = t->parent) {
! 266: if (t->sparc_intr_establish != NULL)
! 267: return ((*t->sparc_intr_establish)
! 268: (t, t0, pri, level, flags, handler, arg, what));
! 269:
! 270: }
! 271:
! 272: panic("dmabus_intr_establish: no handler found");
! 273:
! 274: return (NULL);
! 275: }
! 276:
! 277: bus_space_tag_t
! 278: dma_alloc_bustag(struct dma_softc *sc)
! 279: {
! 280: struct sparc_bus_space_tag *sbt;
! 281:
! 282: sbt = malloc(sizeof(*sbt), M_DEVBUF, M_NOWAIT);
! 283: if (sbt == NULL)
! 284: return (NULL);
! 285:
! 286: bzero(sbt, sizeof *sbt);
! 287: sbt->cookie = sc;
! 288: sbt->parent = sc->sc_lsi64854.sc_bustag;
! 289: sbt->asi = sbt->parent->asi;
! 290: sbt->sasi = sbt->parent->sasi;
! 291: sbt->sparc_intr_establish = dmabus_intr_establish;
! 292: return (sbt);
! 293: }
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