1 /* $NetBSD: auxio.c,v 1.9 2002/10/02 16:02:17 thorpej 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/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/callout.h> 40 #include <sys/errno.h> 41 #include <sys/device.h> 42 #include <sys/malloc.h> 43 44 #include <machine/autoconf.h> 45 #include <machine/cpu.h> 46 47 #include <dev/ebus/ebusreg.h> 48 #include <dev/ebus/ebusvar.h> 49 #include <sparc64/dev/sbusvar.h> 50 #include <sparc64/dev/auxioreg.h> 51 52 /* 53 * on sun4u, auxio exists with one register (LED) on the sbus, and 5 54 * registers on the ebus2 (pci) (LED, PCIMODE, FREQUENCY, SCSI 55 * OSCILLATOR, and TEMP SENSE. 56 */ 57 58 struct auxio_softc { 59 struct device sc_dev; 60 61 /* parent's tag */ 62 bus_space_tag_t sc_tag; 63 64 /* handles to the various auxio regsiter sets */ 65 bus_space_handle_t sc_led; 66 bus_space_handle_t sc_pci; 67 bus_space_handle_t sc_freq; 68 bus_space_handle_t sc_scsi; 69 bus_space_handle_t sc_temp; 70 71 int sc_flags; 72 #define AUXIO_LEDONLY 0x1 73 #define AUXIO_EBUS 0x2 74 #define AUXIO_SBUS 0x4 75 }; 76 77 #define AUXIO_ROM_NAME "auxio" 78 79 void auxio_attach_common(struct auxio_softc *); 80 int auxio_ebus_match(struct device *, struct cfdata *, void *); 81 void auxio_ebus_attach(struct device *, struct device *, void *); 82 int auxio_sbus_match(struct device *, struct cfdata *, void *); 83 void auxio_sbus_attach(struct device *, struct device *, void *); 84 85 CFATTACH_DECL(auxio_ebus, sizeof(struct auxio_softc), 86 auxio_ebus_match, auxio_ebus_attach, NULL, NULL); 87 88 CFATTACH_DECL(auxio_sbus, sizeof(struct auxio_softc), 89 auxio_sbus_match, auxio_sbus_attach, NULL, NULL); 90 91 #ifdef BLINK 92 static struct callout blink_ch = CALLOUT_INITIALIZER; 93 94 static void auxio_blink(void *); 95 96 static void 97 auxio_blink(x) 98 void *x; 99 { 100 struct auxio_softc *sc = x; 101 int s; 102 u_int32_t led; 103 104 s = splhigh(); 105 if (sc->sc_flags & AUXIO_EBUS) 106 led = le32toh(bus_space_read_4(sc->sc_tag, sc->sc_led, 0)); 107 else 108 led = bus_space_read_1(sc->sc_tag, sc->sc_led, 0); 109 if (led & AUXIO_LED_LED) 110 led = 0; 111 else 112 led = AUXIO_LED_LED; 113 if (sc->sc_flags & AUXIO_EBUS) 114 bus_space_write_4(sc->sc_tag, sc->sc_led, 0, htole32(led)); 115 else 116 bus_space_write_1(sc->sc_tag, sc->sc_led, 0, led); 117 splx(s); 118 119 /* 120 * Blink rate is: 121 * full cycle every second if completely idle (loadav = 0) 122 * full cycle every 2 seconds if loadav = 1 123 * full cycle every 3 seconds if loadav = 2 124 * etc. 125 */ 126 s = (((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1)); 127 callout_reset(&blink_ch, s, auxio_blink, sc); 128 } 129 #endif 130 131 void 132 auxio_attach_common(sc) 133 struct auxio_softc *sc; 134 { 135 #ifdef BLINK 136 static int do_once = 1; 137 138 /* only start one blinker */ 139 if (do_once) { 140 auxio_blink(sc); 141 do_once = 0; 142 } 143 #endif 144 printf("\n"); 145 } 146 147 int 148 auxio_ebus_match(parent, cf, aux) 149 struct device *parent; 150 struct cfdata *cf; 151 void *aux; 152 { 153 struct ebus_attach_args *ea = aux; 154 155 return (strcmp(AUXIO_ROM_NAME, ea->ea_name) == 0); 156 } 157 158 void 159 auxio_ebus_attach(parent, self, aux) 160 struct device *parent, *self; 161 void *aux; 162 { 163 struct auxio_softc *sc = (struct auxio_softc *)self; 164 struct ebus_attach_args *ea = aux; 165 166 sc->sc_tag = ea->ea_bustag; 167 168 if (ea->ea_nreg < 1) { 169 printf(": no registers??\n"); 170 return; 171 } 172 173 if (ea->ea_nreg != 5) { 174 printf(": not 5 (%d) registers, only setting led", 175 ea->ea_nreg); 176 sc->sc_flags = AUXIO_LEDONLY|AUXIO_EBUS; 177 } else if (ea->ea_nvaddr == 5) { 178 sc->sc_flags = AUXIO_EBUS; 179 180 sparc_promaddr_to_handle(sc->sc_tag, 181 ea->ea_vaddr[1], &sc->sc_pci); 182 sparc_promaddr_to_handle(sc->sc_tag, 183 ea->ea_vaddr[2], &sc->sc_freq); 184 sparc_promaddr_to_handle(sc->sc_tag, 185 ea->ea_vaddr[3], &sc->sc_scsi); 186 sparc_promaddr_to_handle(sc->sc_tag, 187 ea->ea_vaddr[4], &sc->sc_temp); 188 } else { 189 sc->sc_flags = AUXIO_EBUS; 190 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[1]), 191 ea->ea_reg[1].size, 0, &sc->sc_pci); 192 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[2]), 193 ea->ea_reg[2].size, 0, &sc->sc_freq); 194 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[3]), 195 ea->ea_reg[3].size, 0, &sc->sc_scsi); 196 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[4]), 197 ea->ea_reg[4].size, 0, &sc->sc_temp); 198 } 199 200 if (ea->ea_nvaddr > 0) { 201 sparc_promaddr_to_handle(sc->sc_tag, 202 ea->ea_vaddr[0], &sc->sc_led); 203 } else { 204 bus_space_map(sc->sc_tag, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 205 ea->ea_reg[0].size, 0, &sc->sc_led); 206 } 207 208 auxio_attach_common(sc); 209 } 210 211 int 212 auxio_sbus_match(parent, cf, aux) 213 struct device *parent; 214 struct cfdata *cf; 215 void *aux; 216 { 217 struct sbus_attach_args *sa = aux; 218 219 return (strcmp(AUXIO_ROM_NAME, sa->sa_name) == 0); 220 } 221 222 void 223 auxio_sbus_attach(parent, self, aux) 224 struct device *parent, *self; 225 void *aux; 226 { 227 struct auxio_softc *sc = (struct auxio_softc *)self; 228 struct sbus_attach_args *sa = aux; 229 230 sc->sc_tag = sa->sa_bustag; 231 232 if (sa->sa_nreg < 1) { 233 printf(": no registers??\n"); 234 return; 235 } 236 237 if (sa->sa_nreg != 1) { 238 printf(": not 1 (%d/%d) registers??", sa->sa_nreg, 239 sa->sa_npromvaddrs); 240 return; 241 } 242 243 /* sbus auxio only has one set of registers */ 244 sc->sc_flags = AUXIO_LEDONLY|AUXIO_SBUS; 245 if (sa->sa_npromvaddrs > 0) { 246 sbus_promaddr_to_handle(sc->sc_tag, 247 sa->sa_promvaddr, &sc->sc_led); 248 } else { 249 sbus_bus_map(sc->sc_tag, sa->sa_slot, sa->sa_offset, 250 sa->sa_size, 0, &sc->sc_led); 251 } 252 253 auxio_attach_common(sc); 254 } 255