1 /* $NetBSD: osiop_jazzio.c,v 1.7 2005/12/11 12:16:39 christos Exp $ */ 2 3 /* 4 * Copyright (c) 2001 Izumi Tsutsui. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 3. The name of the author may not be used to endorse or promote products 15 * derived from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: osiop_jazzio.c,v 1.7 2005/12/11 12:16:39 christos Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/device.h> 35 #include <sys/buf.h> 36 #include <sys/malloc.h> 37 38 #include <dev/scsipi/scsi_all.h> 39 #include <dev/scsipi/scsipi_all.h> 40 #include <dev/scsipi/scsiconf.h> 41 42 #include <machine/cpu.h> 43 #include <machine/autoconf.h> 44 #include <machine/bus.h> 45 46 #include <dev/ic/osiopreg.h> 47 #include <dev/ic/osiopvar.h> 48 49 #include <arc/jazz/jazziovar.h> 50 51 int osiop_jazzio_match(struct device *, struct cfdata *, void *); 52 void osiop_jazzio_attach(struct device *, struct device *, void *); 53 int osiop_jazzio_intr(void *); 54 55 CFATTACH_DECL(osiop_jazzio, sizeof(struct osiop_softc), 56 osiop_jazzio_match, osiop_jazzio_attach, NULL, NULL); 57 58 int 59 osiop_jazzio_match(struct device *parent, struct cfdata *match, void *aux) 60 { 61 struct jazzio_attach_args *ja = aux; 62 63 if (strcmp(ja->ja_name, "NCRC710") != 0) 64 return 0; 65 66 return 1; 67 } 68 69 void 70 osiop_jazzio_attach(struct device *parent, struct device *self, void *aux) 71 { 72 struct jazzio_attach_args *ja = aux; 73 struct osiop_softc *sc = (void *)self; 74 int err, scid; 75 76 sc->sc_bst = ja->ja_bust; 77 sc->sc_dmat = ja->ja_dmat; 78 79 /* 80 * Map registers 81 */ 82 err = bus_space_map(sc->sc_bst, ja->ja_addr, 83 OSIOP_NREGS, 0, &sc->sc_reg); 84 if (err) { 85 printf("%s: failed to map registers, err=%d\n", 86 sc->sc_dev.dv_xname, err); 87 return; 88 } 89 90 sc->sc_clock_freq = 50; /* MHz */ 91 sc->sc_ctest7 = 0; /* | OSIOP_CTEST7_TT1 */ 92 sc->sc_dcntl = OSIOP_DCNTL_EA; 93 94 /* XXX should check ID in BIOS variables? */ 95 scid = ffs(osiop_read_1(sc, OSIOP_SCID)); 96 97 if (scid == 0) 98 scid = 7; 99 else 100 scid--; 101 102 sc->sc_id = scid; 103 104 /* 105 * Call common attachment 106 */ 107 osiop_attach(sc); 108 109 /* 110 * Set up interrupt handler. 111 */ 112 jazzio_intr_establish(ja->ja_intr, 113 (intr_handler_t)osiop_jazzio_intr, sc); 114 } 115 116 /* 117 * interrupt handler 118 */ 119 int 120 osiop_jazzio_intr(void *arg) 121 { 122 struct osiop_softc *sc = arg; 123 uint8_t istat; 124 125 /* This is potentially nasty, since the IRQ is level triggered... */ 126 if (sc->sc_flags & OSIOP_INTSOFF) 127 return 0; 128 129 istat = osiop_read_1(sc, OSIOP_ISTAT); 130 131 if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) 132 return 0; 133 134 /* Save interrupt details for the back-end interrupt handler */ 135 sc->sc_sstat0 = osiop_read_1(sc, OSIOP_SSTAT0); 136 sc->sc_istat = istat; 137 sc->sc_dstat = osiop_read_1(sc, OSIOP_DSTAT); 138 139 /* Deal with the interrupt */ 140 osiop_intr(sc); 141 142 return 1; 143 } 144