1/* $NetBSD: auxreg.c,v 1.38 2007/10/17 19:57:14 garbled Exp $ */ 2 3/* 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This software was developed by the Computer Systems Engineering group 8 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 9 * contributed to Berkeley. 10 * 11 * All advertising materials mentioning features or use of this software 12 * must display the following acknowledgement: 13 * This product includes software developed by the University of 14 * California, Lawrence Berkeley Laboratory. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 3. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * @(#)auxreg.c 8.1 (Berkeley) 6/11/93 41 */ 42 43#include <sys/cdefs.h> 44__KERNEL_RCSID(0, "$NetBSD: auxreg.c,v 1.38 2007/10/17 19:57:14 garbled Exp $"); 45 46#include "opt_blink.h" 47 48#include <sys/param.h> 49#include <sys/systm.h> 50#include <sys/callout.h> 51#include <sys/device.h> 52#include <sys/kernel.h> 53 54#include <machine/autoconf.h> 55 56#include <sparc/sparc/vaddrs.h> 57#include <sparc/sparc/auxreg.h> 58 59static int auxregmatch_mainbus(device_t, cfdata_t, void *); 60static int auxregmatch_obio(device_t, cfdata_t, void *); 61static void auxregattach_mainbus(device_t, device_t, void *); 62static void auxregattach_obio(device_t, device_t, void *); 63 64static void auxregattach(void); 65 66CFATTACH_DECL_NEW(auxreg_mainbus, 0, 67 auxregmatch_mainbus, auxregattach_mainbus, NULL, NULL); 68 69CFATTACH_DECL_NEW(auxreg_obio, 0, 70 auxregmatch_obio, auxregattach_obio, NULL, NULL); 71 72#ifdef BLINK 73static callout_t blink_ch; 74 75static void blink(void *); 76 77static void 78blink(void *zero) 79{ 80 register int s; 81 82 s = splhigh(); 83 LED_FLIP; 84 splx(s); 85 /* 86 * Blink rate is: 87 * full cycle every second if completely idle (loadav = 0) 88 * full cycle every 2 seconds if loadav = 1 89 * full cycle every 3 seconds if loadav = 2 90 * etc. 91 */ 92 s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1)); 93 callout_reset(&blink_ch, s, blink, NULL); 94} 95#endif 96 97/* 98 * The OPENPROM calls this "auxiliary-io" (sun4c) or "auxio" (sun4m). 99 */ 100static int 101auxregmatch_mainbus(device_t parent, cfdata_t cf, void *aux) 102{ 103 struct mainbus_attach_args *ma = aux; 104 105 return (strcmp("auxiliary-io", ma->ma_name) == 0); 106} 107 108static int 109auxregmatch_obio(device_t parent, cfdata_t cf, void *aux) 110{ 111 union obio_attach_args *uoba = aux; 112 113 if (uoba->uoba_isobio4 != 0) 114 return (0); 115 116 return (strcmp("auxio", uoba->uoba_sbus.sa_name) == 0); 117} 118 119/* ARGSUSED */ 120static void 121auxregattach_mainbus(device_t parent, device_t self, void *aux) 122{ 123 struct mainbus_attach_args *ma = aux; 124 bus_space_handle_t bh; 125 126 if (bus_space_map2(ma->ma_bustag, 127 (bus_addr_t)ma->ma_paddr, 128 sizeof(long), 129 BUS_SPACE_MAP_LINEAR, 130 AUXREG_VA, 131 &bh) != 0) { 132 printf("auxregattach_mainbus: can't map register\n"); 133 return; 134 } 135 136 auxio_reg = AUXIO4C_REG; 137 auxio_regval = *AUXIO4C_REG | AUXIO4C_FEJ | AUXIO4C_MB1; 138 auxregattach(); 139} 140 141static void 142auxregattach_obio(device_t parent, device_t self, void *aux) 143{ 144 union obio_attach_args *uoba = aux; 145 struct sbus_attach_args *sa = &uoba->uoba_sbus; 146 bus_space_handle_t bh; 147 148 if (bus_space_map2(sa->sa_bustag, 149 BUS_ADDR(sa->sa_slot, sa->sa_offset), 150 sizeof(long), 151 BUS_SPACE_MAP_LINEAR, 152 AUXREG_VA, &bh) != 0) { 153 printf("auxregattach_obio: can't map register\n"); 154 return; 155 } 156 157 auxio_reg = AUXIO4M_REG; 158 auxio_regval = *AUXIO4M_REG | AUXIO4M_MB1; 159 auxregattach(); 160} 161 162static void 163auxregattach(void) 164{ 165 166 printf("\n"); 167#ifdef BLINK 168 callout_init(&blink_ch, 0); 169 blink((void *)0); 170#else 171 LED_ON; 172#endif 173} 174 175unsigned int 176auxregbisc(int bis, int bic) 177{ 178 register int s; 179 180 if (auxio_reg == 0) 181 /* 182 * Not all machines have an `aux' register; devices that 183 * depend on it should not get configured if it's absent. 184 */ 185 panic("no aux register"); 186 187 s = splhigh(); 188 auxio_regval = (auxio_regval | bis) & ~bic; 189 *auxio_reg = auxio_regval; 190 splx(s); 191 return (auxio_regval); 192} 193