1 /* $OpenBSD: uturn.c,v 1.7 2010/04/29 13:48:29 jsing Exp $ */ 2 3 /* 4 * Copyright (c) 2004 Michael Shalayeff 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 26 * THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /* TODO IOA programming */ 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/device.h> 34 #include <sys/reboot.h> 35 36 #include <machine/iomod.h> 37 #include <machine/autoconf.h> 38 39 #include <hppa/dev/cpudevs.h> 40 41 struct uturn_regs { 42 u_int64_t resv0[2]; 43 u_int64_t status; /* 0x10: */ 44 u_int64_t resv1[5]; 45 u_int64_t debug; /* 0x40: */ 46 }; 47 48 struct uturn_softc { 49 struct device sc_dv; 50 51 struct uturn_regs volatile *sc_regs; 52 }; 53 54 int uturnmatch(struct device *, void *, void *); 55 void uturnattach(struct device *, struct device *, void *); 56 57 struct cfattach uturn_ca = { 58 sizeof(struct uturn_softc), uturnmatch, uturnattach 59 }; 60 61 struct cfdriver uturn_cd = { 62 NULL, "uturn", DV_DULL 63 }; 64 65 int 66 uturnmatch(parent, cfdata, aux) 67 struct device *parent; 68 void *cfdata; 69 void *aux; 70 { 71 struct confargs *ca = aux; 72 /* struct cfdata *cf = cfdata; */ 73 74 /* there will be only one */ 75 if (ca->ca_type.iodc_type != HPPA_TYPE_IOA || 76 ca->ca_type.iodc_sv_model != HPPA_IOA_UTURN) 77 return 0; 78 79 if (ca->ca_type.iodc_model == 0x58 && 80 ca->ca_type.iodc_revision >= 0x20) 81 return 0; 82 83 return 1; 84 } 85 86 void 87 uturnattach(parent, self, aux) 88 struct device *parent; 89 struct device *self; 90 void *aux; 91 { 92 struct confargs *ca = aux, nca; 93 struct uturn_softc *sc = (struct uturn_softc *)self; 94 bus_space_handle_t ioh; 95 hppa_hpa_t hpa; 96 97 if (bus_space_map(ca->ca_iot, ca->ca_hpa, IOMOD_HPASIZE, 0, &ioh)) { 98 printf(": can't map IO space\n"); 99 return; 100 } 101 sc->sc_regs = (struct uturn_regs *)ca->ca_hpa; 102 103 printf(": %s rev %d\n", 104 ca->ca_type.iodc_revision < 0x10? "U2" : "UTurn", 105 ca->ca_type.iodc_revision & 0xf); 106 107 /* keep it real */ 108 ((struct iomod *)ioh)->io_control = 0x80; 109 110 /* 111 * U2/UTurn is actually a combination of an Upper Bus 112 * Converter (UBC) and a Lower Bus Converter (LBC). This 113 * driver attaches to the UBC; the LBC isn't very interesting, 114 * so we skip it. This is easy, since it always is module 63, 115 * hence the MAXMODBUS - 1 below. 116 */ 117 nca = *ca; 118 nca.ca_hpamask = HPPA_IOBEGIN; 119 pdc_scanbus(self, &nca, MAXMODBUS - 1, 0, 0); 120 121 /* XXX On some machines, PDC doesn't tell us about all devices. */ 122 switch (cpu_hvers) { 123 case HPPA_BOARD_HP809: 124 case HPPA_BOARD_HP819: 125 case HPPA_BOARD_HP829: 126 case HPPA_BOARD_HP839: 127 case HPPA_BOARD_HP849: 128 case HPPA_BOARD_HP859: 129 case HPPA_BOARD_HP869: 130 hpa = ((struct iomod *)ioh)->io_io_low << 16; 131 pdc_scanbus(self, &nca, MAXMODBUS - 1, hpa, 0); 132 break; 133 default: 134 break; 135 } 136 } 137