sys/dev/sbus/dma_sbus.c

   1 /*      $NetBSD: dma_sbus.c,v 1.34 2009/05/12 13:20:05 cegger 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  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Copyright (c) 1994 Peter Galbavy.  All rights reserved.
  34  *
  35  * Redistribution and use in source and binary forms, with or without
  36  * modification, are permitted provided that the following conditions
  37  * are met:
  38  * 1. Redistributions of source code must retain the above copyright
  39  *    notice, this list of conditions and the following disclaimer.
  40  * 2. Redistributions in binary form must reproduce the above copyright
  41  *    notice, this list of conditions and the following disclaimer in the
  42  *    documentation and/or other materials provided with the distribution.
  43  * 3. All advertising materials mentioning features or use of this software
  44  *    must display the following acknowledgement:
  45  *      This product includes software developed by Peter Galbavy.
  46  * 4. The name of the author may not be used to endorse or promote products
  47  *    derived from this software without specific prior written permission.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  50  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  51  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  52  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  53  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  54  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  55  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  56  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  57  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  58  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  59  */
  60
  61 #include <sys/cdefs.h>
  62 __KERNEL_RCSID(0, "$NetBSD: dma_sbus.c,v 1.34 2009/05/12 13:20:05 cegger Exp $");
  63
  64 #include <sys/param.h>
  65 #include <sys/systm.h>
  66 #include <sys/kernel.h>
  67 #include <sys/errno.h>
  68 #include <sys/device.h>
  69 #include <sys/malloc.h>
  70
  71 #include <sys/bus.h>
  72 #include <sys/intr.h>
  73 #include <machine/autoconf.h>
  74
  75 #include <dev/sbus/sbusvar.h>
  76
  77 #include <dev/ic/lsi64854reg.h>
  78 #include <dev/ic/lsi64854var.h>
  79
  80 struct dma_softc {
  81         struct lsi64854_softc   sc_lsi64854;    /* base device */
  82         /* possible sbus specific stuff here */
  83 };
  84
  85 int     dmamatch_sbus(device_t, cfdata_t, void *);
  86 void    dmaattach_sbus(device_t, device_t, void *);
  87
  88 int     dmaprint_sbus(void *, const char *);
  89
  90 void    *dmabus_intr_establish(
  91                 bus_space_tag_t,
  92                 int,                    /*bus interrupt priority*/
  93                 int,                    /*`device class' level*/
  94                 int (*)(void *),        /*handler*/
  95                 void *,                 /*handler arg*/
  96                 void (*) (void));       /*optional fast trap handler*/
  97
  98 CFATTACH_DECL_NEW(dma_sbus, sizeof(struct dma_softc),
  99     dmamatch_sbus, dmaattach_sbus, NULL, NULL);
 100
 101 CFATTACH_DECL_NEW(ledma, sizeof(struct dma_softc),
 102     dmamatch_sbus, dmaattach_sbus, NULL, NULL);
 103
 104 int
 105 dmaprint_sbus(void *aux, const char *busname)
 106 {
 107         struct sbus_attach_args *sa = aux;
 108         bus_space_tag_t t = sa->sa_bustag;
 109         struct dma_softc *sc = t->cookie;
 110
 111         sa->sa_bustag = sc->sc_lsi64854.sc_bustag;      /* XXX */
 112         sbus_print(aux, busname);       /* XXX */
 113         sa->sa_bustag = t;              /* XXX */
 114         return UNCONF;
 115 }
 116
 117 int
 118 dmamatch_sbus(device_t parent, cfdata_t cf, void *aux)
 119 {
 120         struct sbus_attach_args *sa = aux;
 121
 122         return strcmp(cf->cf_name, sa->sa_name) == 0 ||
 123             strcmp("espdma", sa->sa_name) == 0;
 124 }
 125
 126 void
 127 dmaattach_sbus(device_t parent, device_t self, void *aux)
 128 {
 129         struct dma_softc *dsc = device_private(self);
 130         struct lsi64854_softc *sc = &dsc->sc_lsi64854;
 131         struct sbus_attach_args *sa = aux;
 132         struct sbus_softc *sbsc = device_private(parent);
 133         bus_space_tag_t sbt;
 134         int sbusburst, burst;
 135         int node;
 136
 137         node = sa->sa_node;
 138
 139         sc->sc_dev = self;
 140         sc->sc_bustag = sa->sa_bustag;
 141         sc->sc_dmatag = sa->sa_dmatag;
 142
 143         /* Map registers */
 144         if (sa->sa_npromvaddrs) {
 145                 sbus_promaddr_to_handle(sa->sa_bustag,
 146                     sa->sa_promvaddrs[0], &sc->sc_regs);
 147         } else {
 148                 if (sbus_bus_map(sa->sa_bustag,
 149                     sa->sa_slot, sa->sa_offset, sa->sa_size,
 150                     0, &sc->sc_regs) != 0) {
 151                         aprint_error(": cannot map registers\n");
 152                         return;
 153                 }
 154         }
 155
 156         /*
 157          * Get transfer burst size from PROM and plug it into the
 158          * controller registers. This is needed on the Sun4m; do
 159          * others need it too?
 160          */
 161         sbusburst = sbsc->sc_burst;
 162         if (sbusburst == 0)
 163                 sbusburst = SBUS_BURST_32 - 1; /* 1->16 */
 164
 165         burst = prom_getpropint(node,"burst-sizes", -1);
 166         if (burst == -1)
 167                 /* take SBus burst sizes */
 168                 burst = sbusburst;
 169
 170         /* Clamp at parent's burst sizes */
 171         burst &= sbusburst;
 172         sc->sc_burst = (burst & SBUS_BURST_32) ? 32 :
 173                        (burst & SBUS_BURST_16) ? 16 : 0;
 174
 175         if (device_is_a(self, "ledma")) {
 176                 char *cabletype;
 177                 uint32_t csr;
 178                 /*
 179                  * Check to see which cable type is currently active and
 180                  * set the appropriate bit in the ledma csr so that it
 181                  * gets used. If we didn't netboot, the PROM won't have
 182                  * the "cable-selection" property; default to TP and then
 183                  * the user can change it via a "media" option to ifconfig.
 184                  */
 185                 cabletype = prom_getpropstring(node, "cable-selection");
 186                 csr = L64854_GCSR(sc);
 187                 if (strcmp(cabletype, "tpe") == 0) {
 188                         csr |= E_TP_AUI;
 189                 } else if (strcmp(cabletype, "aui") == 0) {
 190                         csr &= ~E_TP_AUI;
 191                 } else {
 192                         /* assume TP if nothing there */
 193                         csr |= E_TP_AUI;
 194                 }
 195                 L64854_SCSR(sc, csr);
 196                 delay(20000);   /* manual says we need a 20ms delay */
 197                 sc->sc_channel = L64854_CHANNEL_ENET;
 198         } else {
 199                 sc->sc_channel = L64854_CHANNEL_SCSI;
 200         }
 201
 202         if ((sbt = bus_space_tag_alloc(sc->sc_bustag, dsc)) == NULL) {
 203                 aprint_error(": out of memory\n");
 204                 return;
 205         }
 206         sbt->sparc_intr_establish = dmabus_intr_establish;
 207         lsi64854_attach(sc);
 208
 209         /* Attach children */
 210         for (node = firstchild(sa->sa_node); node; node = nextsibling(node)) {
 211                 struct sbus_attach_args sax;
 212                 sbus_setup_attach_args(sbsc, sbt, sc->sc_dmatag, node, &sax);
 213                 (void)config_found(self, (void *)&sax, dmaprint_sbus);
 214                 sbus_destroy_attach_args(&sax);
 215         }
 216 }
 217
 218 void *
 219 dmabus_intr_establish(bus_space_tag_t t, int pri, int level,
 220     int (*handler)(void *), void *arg, void (*fastvec)(void))
 221 {
 222         struct lsi64854_softc *sc = t->cookie;
 223
 224         /* XXX - for now only le; do esp later */
 225         if (sc->sc_channel == L64854_CHANNEL_ENET) {
 226                 sc->sc_intrchain = handler;
 227                 sc->sc_intrchainarg = arg;
 228                 handler = lsi64854_enet_intr;
 229                 arg = sc;
 230         }
 231         return bus_intr_establish(sc->sc_bustag, pri, level, handler, arg);
 232 }