1 /* $NetBSD: osiop_sbdio.c,v 1.3 2008/03/29 09:11:35 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2005 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_sbdio.c,v 1.3 2008/03/29 09:11:35 tsutsui Exp $"); 31 32 #include <sys/param.h> 33 #include <sys/systm.h> 34 #include <sys/device.h> 35 36 #include <machine/bus.h> 37 #include <machine/sbdiovar.h> 38 39 #include <dev/scsipi/scsi_all.h> 40 #include <dev/scsipi/scsipi_all.h> 41 #include <dev/scsipi/scsiconf.h> 42 43 #include <dev/ic/osiopreg.h> 44 #include <dev/ic/osiopvar.h> 45 46 int osiop_sbdio_match(device_t, cfdata_t, void *); 47 void osiop_sbdio_attach(device_t, device_t, void *); 48 int osiop_sbdio_intr(void *); 49 50 CFATTACH_DECL_NEW(osiop_sbdio, sizeof(struct osiop_softc), 51 osiop_sbdio_match, osiop_sbdio_attach, NULL, NULL); 52 53 int 54 osiop_sbdio_match(device_t parent, cfdata_t cf, void *aux) 55 { 56 struct sbdio_attach_args *sa = aux; 57 58 return strcmp(sa->sa_name, "osiop") ? 0 : 1; 59 } 60 61 void 62 osiop_sbdio_attach(device_t parent, device_t self, void *aux) 63 { 64 struct osiop_softc *sc = device_private(self); 65 struct sbdio_attach_args *sa = aux; 66 int error, scid; 67 68 sc->sc_dev = self; 69 sc->sc_dmat = sa->sa_dmat; 70 sc->sc_bst = sa->sa_bust; 71 72 error = bus_space_map(sc->sc_bst, sa->sa_addr1, OSIOP_NREGS, 0, 73 &sc->sc_reg); 74 if (error != 0) { 75 aprint_error(": can't map registers, error = %d\n", error); 76 return; 77 } 78 79 sc->sc_clock_freq = 25; /* MHz */ 80 sc->sc_ctest7 = 0; 81 sc->sc_dcntl = OSIOP_DCNTL_EA; 82 if (sa->sa_flags == 0x0001) /* TR2A */ 83 sc->sc_ctest4 = OSIOP_CTEST4_MUX; /* Host bus multiplex mode */ 84 85 scid = ffs(osiop_read_1(sc, OSIOP_SCID)); 86 if (scid == 0) 87 scid = 7; 88 else 89 scid--; 90 sc->sc_id = scid; 91 92 intr_establish(sa->sa_irq, osiop_sbdio_intr, sc); 93 94 osiop_attach(sc); 95 } 96 97 int 98 osiop_sbdio_intr(void *arg) 99 { 100 struct osiop_softc *sc = arg; 101 uint8_t istat; 102 103 if (sc->sc_flags & OSIOP_INTSOFF) 104 return 0; 105 106 istat = osiop_read_1(sc, OSIOP_ISTAT); 107 108 if ((istat & (OSIOP_ISTAT_SIP | OSIOP_ISTAT_DIP)) == 0) 109 return 0; 110 111 /* Save interrupt details for the back-end interrupt handler */ 112 sc->sc_sstat0 = osiop_read_1(sc, OSIOP_SSTAT0); 113 sc->sc_istat = istat; 114 sc->sc_dstat = osiop_read_1(sc, OSIOP_DSTAT); 115 116 osiop_intr(sc); 117 118 return 1; 119 } 120