Annotation of sys/arch/macppc/dev/macgpio.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: macgpio.c,v 1.6 2007/04/22 22:31:14 deraadt Exp $ */
! 2: /* $NetBSD: gpio.c,v 1.2 2001/02/27 05:16:33 matt Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (C) 1998 Internet Research Institute, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * Redistribution and use in source and binary forms, with or without
! 9: * modification, are permitted provided that the following conditions
! 10: * are met:
! 11: * 1. Redistributions of source code must retain the above copyright
! 12: * notice, this list of conditions and the following disclaimer.
! 13: * 2. Redistributions in binary form must reproduce the above copyright
! 14: * notice, this list of conditions and the following disclaimer in the
! 15: * documentation and/or other materials provided with the distribution.
! 16: * 3. All advertising materials mentioning features or use of this software
! 17: * must display the following acknowledgement:
! 18: * This product includes software developed by
! 19: * Internet Research Institute, Inc.
! 20: * 4. The name of the author may not be used to endorse or promote products
! 21: * derived from this software without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 24: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 25: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 26: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 27: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 28: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 29: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 30: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 31: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
! 32: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 33: */
! 34:
! 35: #include <sys/types.h>
! 36: #include <sys/param.h>
! 37: #include <sys/systm.h>
! 38: #include <sys/kernel.h>
! 39: #include <sys/device.h>
! 40: #include <sys/malloc.h>
! 41:
! 42: #include <dev/ofw/openfirm.h>
! 43:
! 44: #include <machine/autoconf.h>
! 45: #include <machine/pio.h>
! 46:
! 47: #include "adb.h"
! 48:
! 49: static void macgpio_attach (struct device *, struct device *, void *);
! 50: static int macgpio_match (struct device *, void *, void *);
! 51: static int macgpio_print (void *aux, const char *gpio);
! 52:
! 53: static void macgpio_gpio_attach (struct device *, struct device *, void *);
! 54: static int macgpio_gpio_match (struct device *, void *, void *);
! 55: static int gpio_intr (void *);
! 56:
! 57: struct gpio_softc {
! 58: struct device sc_dev;
! 59: u_int8_t *sc_port;
! 60: };
! 61:
! 62: struct cfattach macgpio_ca = {
! 63: sizeof(struct gpio_softc), macgpio_match, macgpio_attach
! 64: };
! 65:
! 66: struct cfattach macgpio_gpio_ca = {
! 67: sizeof(struct gpio_softc), macgpio_gpio_match, macgpio_gpio_attach
! 68: };
! 69:
! 70: struct cfdriver macgpio_cd = {
! 71: NULL, "macgpio", DV_DULL
! 72: };
! 73:
! 74: int
! 75: macgpio_match(struct device *parent, void *cf, void *aux)
! 76: {
! 77: struct confargs *ca = aux;
! 78:
! 79: if (strcmp(ca->ca_name, "gpio") != 0)
! 80: return 0;
! 81:
! 82: if (ca->ca_nreg < 8)
! 83: return 0;
! 84:
! 85: return 1;
! 86: }
! 87:
! 88: void
! 89: macgpio_attach(struct device *parent, struct device *self, void *aux)
! 90: {
! 91: struct gpio_softc *sc = (struct gpio_softc *)self;
! 92: struct confargs *ca = aux, ca2;
! 93: int child;
! 94: int namelen;
! 95: int intr[6];
! 96: u_int reg[20];
! 97: char name[32];
! 98:
! 99: printf("\n");
! 100:
! 101: sc->sc_port = mapiodev(ca->ca_baseaddr + ca->ca_reg[0], ca->ca_reg[1]);
! 102:
! 103: ca2.ca_baseaddr = ca->ca_baseaddr;
! 104: for (child = OF_child(ca->ca_node); child; child = OF_peer(child)) {
! 105: namelen = OF_getprop(child, "name", name, sizeof(name));
! 106: if (namelen < 0)
! 107: continue;
! 108: if (namelen >= sizeof(name))
! 109: continue;
! 110:
! 111: name[namelen] = 0;
! 112: ca2.ca_name = name;
! 113: ca2.ca_node = child;
! 114:
! 115: ca2.ca_nreg = OF_getprop(child, "reg", reg, sizeof(reg));
! 116: ca2.ca_nintr = OF_getprop(child, "AAPL,interrupts", intr,
! 117: sizeof(intr));
! 118: if (ca2.ca_nintr == -1)
! 119: ca2.ca_nintr = OF_getprop(child, "interrupts", intr,
! 120: sizeof(intr));
! 121:
! 122: ca2.ca_reg = reg;
! 123: ca2.ca_intr = intr;
! 124:
! 125: config_found(self, &ca2, macgpio_print);
! 126: }
! 127: }
! 128:
! 129: int
! 130: macgpio_print(void *aux, const char *gpio)
! 131: {
! 132: struct confargs *ca = aux;
! 133: if (gpio)
! 134: printf("\"%s\" at %s", ca->ca_name, gpio);
! 135:
! 136: if (ca->ca_nreg > 0)
! 137: printf(" offset 0x%x", ca->ca_reg[0]);
! 138:
! 139: return UNCONF;
! 140: }
! 141:
! 142: int
! 143: macgpio_gpio_match(struct device *parent, void *cf, void *aux)
! 144: {
! 145: struct confargs *ca = aux;
! 146:
! 147: if (strcmp(ca->ca_name, "extint-gpio1") != 0)
! 148: return 0;
! 149:
! 150: if (ca->ca_nintr < 4)
! 151: return 0;
! 152:
! 153: return 1;
! 154: }
! 155:
! 156: void
! 157: macgpio_gpio_attach(struct device *parent, struct device *self, void *aux)
! 158: {
! 159: struct gpio_softc *sc = (struct gpio_softc *)self;
! 160: struct confargs *ca = aux;
! 161:
! 162:
! 163: sc->sc_port = ((struct gpio_softc *) parent)->sc_port;
! 164: mac_intr_establish(parent, ca->ca_intr[0], IST_LEVEL, IPL_HIGH,
! 165: gpio_intr, sc, sc->sc_dev.dv_xname);
! 166:
! 167: printf(" irq %d\n", ca->ca_intr[0]);
! 168: }
! 169:
! 170: #if NADB > 0
! 171: extern int adb_intr (void *);
! 172: extern struct cfdriver adb_cd;
! 173: #endif
! 174:
! 175: int
! 176: gpio_intr(void *arg)
! 177: {
! 178: int rv = 0;
! 179:
! 180: #if NADB > 0
! 181: if (adb_cd.cd_devs[0] != NULL)
! 182: rv = adb_intr(adb_cd.cd_devs[0]);
! 183: #endif
! 184:
! 185: return rv;
! 186: }
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