Annotation of sys/arch/sparc/dev/scf.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: scf.c,v 1.10 2006/03/15 20:03:06 miod Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1999 Jason L. Wright (jason@thought.net)
! 5: * All rights reserved.
! 6: *
! 7: * This software was developed by Jason L. Wright under contract with
! 8: * RTMX Incorporated (http://www.rtmx.com).
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer.
! 15: * 2. Redistributions in binary form must reproduce the above copyright
! 16: * notice, this list of conditions and the following disclaimer in the
! 17: * documentation and/or other materials provided with the distribution.
! 18: *
! 19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 20: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 21: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 22: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
! 23: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 24: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 25: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 27: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
! 28: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 29: * POSSIBILITY OF SUCH DAMAGE.
! 30: */
! 31:
! 32: /*
! 33: * Driver for the flash memory and sysconfig registers found on Force CPU-5V
! 34: * boards.
! 35: */
! 36:
! 37: #include <sys/param.h>
! 38: #include <sys/systm.h>
! 39: #include <sys/kernel.h>
! 40: #include <sys/errno.h>
! 41: #include <sys/ioctl.h>
! 42: #include <sys/mbuf.h>
! 43: #include <sys/socket.h>
! 44: #include <sys/syslog.h>
! 45: #include <sys/device.h>
! 46: #include <sys/malloc.h>
! 47: #include <sys/timeout.h>
! 48:
! 49: #include <machine/autoconf.h>
! 50: #include <sparc/cpu.h>
! 51: #include <sparc/sparc/cpuvar.h>
! 52: #include <machine/scfio.h>
! 53: #include <sparc/dev/scfreg.h>
! 54:
! 55: int scfmatch(struct device *, void *, void *);
! 56: void scfattach(struct device *, struct device *, void *);
! 57:
! 58: int scfopen(dev_t, int, int, struct proc *);
! 59: int scfclose(dev_t, int, int, struct proc *);
! 60: int scfioctl(dev_t, u_long, caddr_t, int, struct proc *);
! 61:
! 62: struct scf_softc {
! 63: struct device sc_dv; /* base device */
! 64: struct scf_regs *sc_regs; /* our registers */
! 65: int sc_open;
! 66: int sc_tick;
! 67: struct timeout sc_blink_tmo; /* for scfblink() */
! 68: };
! 69:
! 70: struct cfattach scf_ca = {
! 71: sizeof (struct scf_softc), scfmatch, scfattach
! 72: };
! 73:
! 74: struct cfdriver scf_cd = {
! 75: NULL, "scf", DV_DULL
! 76: };
! 77:
! 78: extern int sparc_led_blink;
! 79:
! 80: static const u_int8_t scf_pattern[] = {
! 81: SSLDCR_A|SSLDCR_B|SSLDCR_C|SSLDCR_D|SSLDCR_E|SSLDCR_F,
! 82: SSLDCR_B|SSLDCR_C,
! 83: SSLDCR_A|SSLDCR_B|SSLDCR_D|SSLDCR_E|SSLDCR_G,
! 84: SSLDCR_A|SSLDCR_B|SSLDCR_C|SSLDCR_D|SSLDCR_G,
! 85: SSLDCR_B|SSLDCR_C|SSLDCR_F|SSLDCR_G,
! 86: SSLDCR_A|SSLDCR_C|SSLDCR_D|SSLDCR_F|SSLDCR_G,
! 87: SSLDCR_A|SSLDCR_C|SSLDCR_D|SSLDCR_E|SSLDCR_F|SSLDCR_G,
! 88: SSLDCR_A|SSLDCR_B|SSLDCR_C,
! 89: SSLDCR_A|SSLDCR_B|SSLDCR_C|SSLDCR_D|SSLDCR_E|SSLDCR_F|SSLDCR_G,
! 90: SSLDCR_A|SSLDCR_B|SSLDCR_C|SSLDCR_D|SSLDCR_F|SSLDCR_G,
! 91: SSLDCR_A|SSLDCR_B|SSLDCR_C|SSLDCR_E|SSLDCR_F|SSLDCR_G,
! 92: SSLDCR_C|SSLDCR_D|SSLDCR_E|SSLDCR_F|SSLDCR_G,
! 93: SSLDCR_A|SSLDCR_D|SSLDCR_E|SSLDCR_F,
! 94: SSLDCR_B|SSLDCR_C|SSLDCR_D|SSLDCR_E|SSLDCR_G,
! 95: SSLDCR_A|SSLDCR_D|SSLDCR_E|SSLDCR_F|SSLDCR_G,
! 96: SSLDCR_A|SSLDCR_E|SSLDCR_F|SSLDCR_G,
! 97: };
! 98:
! 99: int
! 100: scfmatch(parent, vcf, aux)
! 101: struct device *parent;
! 102: void *vcf, *aux;
! 103: {
! 104: struct confargs *ca = aux;
! 105: register struct romaux *ra = &ca->ca_ra;
! 106:
! 107: if (strcmp("sysconfig", ra->ra_name))
! 108: return (0);
! 109:
! 110: return (1);
! 111: }
! 112:
! 113: void
! 114: scfattach(parent, self, aux)
! 115: struct device *parent, *self;
! 116: void *aux;
! 117: {
! 118: struct confargs *ca = aux;
! 119: struct scf_softc *sc = (struct scf_softc *)self;
! 120: char *s;
! 121:
! 122: /* map registers */
! 123: if (ca->ca_ra.ra_nreg != 1) {
! 124: printf(": expected 1 register, got %d\n", ca->ca_ra.ra_nreg);
! 125: return;
! 126: }
! 127:
! 128: sc->sc_regs = mapiodev(&(ca->ca_ra.ra_reg[0]), 0,
! 129: ca->ca_ra.ra_reg[0].rr_len);
! 130:
! 131: s = getpropstring(ca->ca_ra.ra_node, "model");
! 132: printf(": model %s\n", s);
! 133:
! 134: sc->sc_regs->led1 &= ~LED_MASK;
! 135: sc->sc_regs->led2 &= ~LED_MASK;
! 136: sc->sc_regs->ssldcr = 0;
! 137:
! 138: timeout_set(&sc->sc_blink_tmo, scfblink, 0);
! 139:
! 140: if (sparc_led_blink)
! 141: scfblink(0);
! 142: }
! 143:
! 144: int
! 145: scfopen(dev, flags, mode, p)
! 146: dev_t dev;
! 147: int flags;
! 148: int mode;
! 149: struct proc *p;
! 150: {
! 151: struct scf_softc *sc;
! 152: int card = 0;
! 153:
! 154: if (card >= scf_cd.cd_ndevs)
! 155: return (ENXIO);
! 156: sc = scf_cd.cd_devs[card];
! 157: if (sc == NULL)
! 158: return (ENXIO);
! 159: if (sc->sc_open)
! 160: return (EBUSY);
! 161:
! 162: sc->sc_open = 1;
! 163: return (0);
! 164: }
! 165:
! 166: int
! 167: scfclose(dev, flags, mode, p)
! 168: dev_t dev;
! 169: int flags;
! 170: int mode;
! 171: struct proc *p;
! 172: {
! 173: struct scf_softc *sc;
! 174: int card = 0;
! 175:
! 176: sc = scf_cd.cd_devs[card];
! 177: sc->sc_open = 0;
! 178: return (0);
! 179: }
! 180:
! 181: int
! 182: scfioctl(dev, cmd, data, flags, p)
! 183: dev_t dev;
! 184: u_long cmd;
! 185: caddr_t data;
! 186: int flags;
! 187: struct proc *p;
! 188: {
! 189: struct scf_softc *sc = scf_cd.cd_devs[0];
! 190: u_int8_t *ptr = (u_int8_t *)data, c;
! 191: int error = 0;
! 192:
! 193: switch (cmd) {
! 194: case SCFIOCSLED1:
! 195: sc->sc_regs->led1 = LED_MASK | (*ptr);
! 196: break;
! 197: case SCFIOCGLED1:
! 198: *ptr = sc->sc_regs->led1 & (LED_COLOR_MASK | LED_BLINK_MASK);
! 199: break;
! 200: case SCFIOCSLED2:
! 201: sc->sc_regs->led2 = LED_MASK | (*ptr);
! 202: break;
! 203: case SCFIOCGLED2:
! 204: *ptr = sc->sc_regs->led2 & (LED_COLOR_MASK | LED_BLINK_MASK);
! 205: break;
! 206: case SCFIOCSLED7:
! 207: sc->sc_regs->ssldcr = *ptr;
! 208: break;
! 209: case SCFIOCGLED7:
! 210: *ptr = sc->sc_regs->ssldcr;
! 211: break;
! 212: case SCFIOCGROT:
! 213: *ptr = sc->sc_regs->rssr;
! 214: break;
! 215: case SCFIOCSFMCTRL:
! 216: if ((*ptr) & SCF_FMCTRL_SELROM)
! 217: sc->sc_regs->fmpcr1 |= FMPCR1_SELROM;
! 218: else
! 219: sc->sc_regs->fmpcr1 &= ~FMPCR1_SELROM;
! 220:
! 221: if ((*ptr) & SCF_FMCTRL_SELBOOT)
! 222: sc->sc_regs->fmpcr2 |= FMPCR2_SELBOOT;
! 223: else
! 224: sc->sc_regs->fmpcr2 &= ~FMPCR2_SELBOOT;
! 225:
! 226: if ((*ptr) & SCF_FMCTRL_WRITEV)
! 227: sc->sc_regs->fmpvcr |= FMPVCR_VPP;
! 228: else
! 229: sc->sc_regs->fmpvcr &= ~FMPVCR_VPP;
! 230:
! 231: c = ((*ptr) & SCF_FMCTRL_SELADDR) >> 3;
! 232: sc->sc_regs->fmpcr1 =
! 233: (sc->sc_regs->fmpcr1 & ~FMPCR1_SELADDR) | (c << 1);
! 234:
! 235: break;
! 236: case SCFIOCGFMCTRL:
! 237: c = (sc->sc_regs->fmpcr1 & FMPCR1_SELADDR) << 2;
! 238: if (sc->sc_regs->fmpcr1 & FMPCR1_SELROM)
! 239: c |= SCF_FMCTRL_SELROM;
! 240: if (sc->sc_regs->fmpcr2 & FMPCR2_SELBOOT)
! 241: c |= SCF_FMCTRL_SELBOOT;
! 242: if (sc->sc_regs->fmpvcr & FMPVCR_VPP)
! 243: c |= SCF_FMCTRL_WRITEV;
! 244: *ptr = c;
! 245: break;
! 246: default:
! 247: error = ENOTTY;
! 248: }
! 249:
! 250: return (error);
! 251: }
! 252:
! 253: void
! 254: scfblink(v)
! 255: void *v;
! 256: {
! 257: struct scf_softc *sc;
! 258: int s, avg, hi = 0;
! 259:
! 260: if (scf_cd.cd_ndevs == 0)
! 261: return;
! 262:
! 263: sc = scf_cd.cd_devs[0];
! 264: if (sc == NULL)
! 265: return;
! 266:
! 267: if (sparc_led_blink == 0) {
! 268: sc->sc_regs->led1 &= ~LED_MASK;
! 269: sc->sc_regs->led2 &= ~LED_MASK;
! 270: sc->sc_regs->ssldcr = 0;
! 271: return;
! 272: }
! 273:
! 274: avg = averunnable.ldavg[0] >> FSHIFT;
! 275: while (avg > 15) {
! 276: hi = 1;
! 277: avg >>= 4;
! 278: }
! 279:
! 280: s = splhigh();
! 281: if (sc->sc_tick & 1) {
! 282: sc->sc_regs->led1 &= ~LED_MASK;
! 283: sc->sc_regs->led2 |= LED_COLOR_GREEN;
! 284: }
! 285: else {
! 286: sc->sc_regs->led1 |= LED_COLOR_YELLOW;
! 287: sc->sc_regs->led2 &= ~LED_MASK;
! 288: }
! 289: sc->sc_regs->ssldcr = scf_pattern[avg] | (hi ? SSLDCR_P : 0);
! 290: splx(s);
! 291:
! 292: sc->sc_tick++;
! 293:
! 294: s = ((averunnable.ldavg[0] + FSCALE) * hz) >> (FSHIFT + 1);
! 295: timeout_add(&sc->sc_blink_tmo, s);
! 296: }
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