auxio.c revision 1.12
1 /* $NetBSD: auxio.c,v 1.12 2004/09/29 04:45:05 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 2000, 2001 Matthew R. Green 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 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 /* 32 * AUXIO registers support on the sbus & ebus2, used for the floppy driver 33 * and to control the system LED, for the BLINK option. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: auxio.c,v 1.12 2004/09/29 04:45:05 mrg Exp $"); 38 39 #include "opt_auxio.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/callout.h> 45 #include <sys/errno.h> 46 #include <sys/device.h> 47 #include <sys/malloc.h> 48 49 #include <machine/autoconf.h> 50 #include <machine/cpu.h> 51 52 #include <dev/ebus/ebusreg.h> 53 #include <dev/ebus/ebusvar.h> 54 #include <sparc64/dev/sbusvar.h> 55 #include <sparc64/dev/auxioreg.h> 56 57 /* 58 * on sun4u, auxio exists with one register (LED) on the sbus, and 5 59 * registers on the ebus2 (pci) (LED, PCIMODE, FREQUENCY, SCSI 60 * OSCILLATOR, and TEMP SENSE. 61 */ 62 63 struct auxio_softc { 64 struct device sc_dev; 65 66 /* parent's tag */ 67 bus_space_tag_t sc_tag; 68 69 /* handles to the various auxio regsiter sets */ 70 bus_space_handle_t sc_led; 71 bus_space_handle_t sc_pci; 72 bus_space_handle_t sc_freq; 73 bus_space_handle_t sc_scsi; 74 bus_space_handle_t sc_temp; 75 76 int sc_flags; 77 #define AUXIO_LEDONLY 0x1 78 #define AUXIO_EBUS 0x2 79 #define AUXIO_SBUS 0x4 80 }; 81 82 #define AUXIO_ROM_NAME "auxio" 83 84 void auxio_attach_common(struct auxio_softc *); 85 int auxio_ebus_match(struct device *, struct cfdata *, void *); 86 void auxio_ebus_attach(struct device *, struct device *, void *); 87 int auxio_sbus_match(struct device *, struct cfdata *, void *); 88 void auxio_sbus_attach(struct device *, struct device *, void *); 89 90 CFATTACH_DECL(auxio_ebus, sizeof(struct auxio_softc), 91 auxio_ebus_match, auxio_ebus_attach, NULL, NULL); 92 93 CFATTACH_DECL(auxio_sbus, sizeof(struct auxio_softc), 94 auxio_sbus_match, auxio_sbus_attach, NULL, NULL); 95 96 #ifdef BLINK 97 static struct callout blink_ch = CALLOUT_INITIALIZER; 98 99 static void auxio_blink(void *); 100 101 /* let someone disable it if it's already turned on; XXX sysctl? */ 102 int do_blink = 1; 103 104 static void 105 auxio_blink(x) 106 void *x; 107 { 108 struct auxio_softc *sc = x; 109 int s; 110 u_int32_t led; 111 112 if (do_blink == 0) 113 return; 114 115 s = splhigh(); 116 if (sc->sc_flags & AUXIO_EBUS) 117 led = le32toh(bus_space_read_4(sc->sc_tag, sc->sc_led, 0)); 118 else 119 led = bus_space_read_1(sc->sc_tag, sc->sc_led, 0); 120 if (led & AUXIO_LED_LED) 121 led = 0; 122 else 123 led = AUXIO_LED_LED; 124 if (sc->sc_flags & AUXIO_EBUS) 125 bus_space_write_4(sc->sc_tag, sc->sc_led, 0, htole32(led)); 126 else 127 bus_space_write_1(sc->sc_tag, sc->sc_led, 0, led); 128 splx(s); 129 130 /* 131 * Blink rate is: 132 * full cycle every second if completely idle (loadav = 0) 133 * full cycle every 2 seconds if loadav = 1 134 * full cycle every 3 seconds if loadav = 2 135 * etc. 136 */ 137 s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1)); 138 callout_reset(&blink_ch, s, auxio_blink, sc); 139 } 140 #endif 141 142 void 143 auxio_attach_common(sc) 144 struct auxio_softc *sc; 145 { 146 #ifdef BLINK 147 static int do_once = 1; 148 149 /* only start one blinker */ 150 if (do_once) { 151 auxio_blink(sc); 152 do_once = 0; 153 } 154 #endif 155 printf("\n"); 156 } 157 158 int 159 auxio_ebus_match(parent, cf, aux) 160 struct device *parent; 161 struct cfdata *cf; 162 void *aux; 163 { 164 struct ebus_attach_args *ea = aux; 165 166 return (strcmp(AUXIO_ROM_NAME, ea->ea_name) == 0); 167 } 168 169 void 170 auxio_ebus_attach(parent, self, aux) 171 struct device *parent, *self; 172 void *aux; 173 { 174 struct auxio_softc *sc = (struct auxio_softc *)self; 175 struct ebus_attach_args *ea = aux; 176 177 sc->sc_tag = ea->ea_bustag; 178 179 if (ea->ea_nreg < 1) { 180 printf(": no registers??\n"); 181 return; 182 } 183 184 if (ea->ea_nreg != 5) { 185 printf(": not 5 (%d) registers, only setting led", 186 ea->ea_nreg); 187 sc->sc_flags = AUXIO_LEDONLY|AUXIO_EBUS; 188 } else if (ea->ea_nvaddr == 5) { 189 sc->sc_flags = AUXIO_EBUS; 190 191 sparc_promaddr_to_handle(sc->sc_tag, 192 ea->ea_vaddr[1], &sc->sc_pci); 193 sparc_promaddr_to_handle(sc->sc_tag, 194 ea->ea_vaddr[2], &sc->sc_freq); 195 sparc_promaddr_to_handle(sc->sc_tag, 196 ea->ea_vaddr[3], &sc->sc_scsi); 197 sparc_promaddr_to_handle(sc->sc_tag, 198 ea->ea_vaddr[4], &sc->sc_temp); 199 } else { 200 sc->sc_flags = AUXIO_EBUS; 201 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[1]), 202 ea->ea_reg[1].size, 0, &sc->sc_pci); 203 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[2]), 204 ea->ea_reg[2].size, 0, &sc->sc_freq); 205 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[3]), 206 ea->ea_reg[3].size, 0, &sc->sc_scsi); 207 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[4]), 208 ea->ea_reg[4].size, 0, &sc->sc_temp); 209 } 210 211 if (ea->ea_nvaddr > 0) { 212 sparc_promaddr_to_handle(sc->sc_tag, 213 ea->ea_vaddr[0], &sc->sc_led); 214 } else { 215 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 216 ea->ea_reg[0].size, 0, &sc->sc_led); 217 } 218 219 auxio_attach_common(sc); 220 } 221 222 int 223 auxio_sbus_match(parent, cf, aux) 224 struct device *parent; 225 struct cfdata *cf; 226 void *aux; 227 { 228 struct sbus_attach_args *sa = aux; 229 230 return (strcmp(AUXIO_ROM_NAME, sa->sa_name) == 0); 231 } 232 233 void 234 auxio_sbus_attach(parent, self, aux) 235 struct device *parent, *self; 236 void *aux; 237 { 238 struct auxio_softc *sc = (struct auxio_softc *)self; 239 struct sbus_attach_args *sa = aux; 240 241 sc->sc_tag = sa->sa_bustag; 242 243 if (sa->sa_nreg < 1) { 244 printf(": no registers??\n"); 245 return; 246 } 247 248 if (sa->sa_nreg != 1) { 249 printf(": not 1 (%d/%d) registers??", sa->sa_nreg, 250 sa->sa_npromvaddrs); 251 return; 252 } 253 254 /* sbus auxio only has one set of registers */ 255 sc->sc_flags = AUXIO_LEDONLY|AUXIO_SBUS; 256 if (sa->sa_npromvaddrs > 0) { 257 sbus_promaddr_to_handle(sc->sc_tag, 258 sa->sa_promvaddr, &sc->sc_led); 259 } else { 260 sbus_bus_map(sc->sc_tag, sa->sa_slot, sa->sa_offset, 261 sa->sa_size, 0, &sc->sc_led); 262 } 263 264 auxio_attach_common(sc); 265 } 266
Indexes created Wed Oct 15 16:09:53 GMT 2025