Annotation of sys/arch/sparc64/dev/ppm.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: ppm.c,v 1.1 2006/06/02 04:46:01 jason Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2006 Jason L. Wright (jason@thought.net)
! 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: *
! 16: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 17: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
! 18: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
! 19: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
! 20: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
! 21: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
! 22: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 23: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
! 24: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
! 25: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 26: * POSSIBILITY OF SUCH DAMAGE.
! 27: */
! 28:
! 29: #include <sys/types.h>
! 30: #include <sys/param.h>
! 31: #include <sys/systm.h>
! 32: #include <sys/device.h>
! 33:
! 34: #include <machine/bus.h>
! 35: #include <machine/autoconf.h>
! 36: #include <machine/openfirm.h>
! 37:
! 38: #include <sparc64/dev/ebusreg.h>
! 39: #include <sparc64/dev/ebusvar.h>
! 40:
! 41: #define BBC_GPIOBANK_INDEX 0x0
! 42: #define BBC_GPIOBANK_DATA 0x1
! 43:
! 44: #define BBC_GPIO_PORT1_DATA 0x0
! 45: #define BBC_GPIO_PORT2_DATA 0x4
! 46:
! 47: #define GPIO_P2D_LED 0x2
! 48:
! 49: struct ppm_softc {
! 50: struct device sc_dv;
! 51: bus_space_tag_t sc_iot;
! 52: bus_space_handle_t sc_estarh;
! 53: bus_space_handle_t sc_rioh;
! 54: bus_space_handle_t sc_gpiobankh;
! 55: bus_space_handle_t sc_gpioh;
! 56: struct blink_led sc_blink;
! 57: };
! 58:
! 59: int ppm_match(struct device *, void *, void *);
! 60: void ppm_attach(struct device *, struct device *, void *);
! 61:
! 62: struct cfattach ppm_ca = {
! 63: sizeof(struct ppm_softc), ppm_match, ppm_attach
! 64: };
! 65:
! 66: struct cfdriver ppm_cd = {
! 67: NULL, "ppm", DV_DULL
! 68: };
! 69:
! 70: void ppm_led_blink(void *, int);
! 71:
! 72: int
! 73: ppm_match(struct device *parent, void *match, void *aux)
! 74: {
! 75: struct ebus_attach_args *ea = aux;
! 76:
! 77: if (strcmp(ea->ea_name, "ppm"))
! 78: return (0);
! 79: return (1);
! 80: }
! 81:
! 82: void
! 83: ppm_attach(struct device *parent, struct device *self, void *aux)
! 84: {
! 85: struct ppm_softc *sc = (void *)self;
! 86: struct ebus_attach_args *ea = aux;
! 87: u_int8_t reg;
! 88:
! 89: sc->sc_iot = ea->ea_memtag;
! 90:
! 91: if (ea->ea_nregs < 4) {
! 92: printf(": need %d regs\n", 4);
! 93: return;
! 94: }
! 95:
! 96: #if 0
! 97: if (ebus_bus_map(sc->sc_iot, 0,
! 98: EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), ea->ea_regs[0].size,
! 99: 0, 0, &sc->sc_estarh)) {
! 100: printf(": failed to map estar\n");
! 101: return;
! 102: }
! 103: #endif
! 104: #if 0
! 105: if (ebus_bus_map(sc->sc_iot, 0,
! 106: EBUS_PADDR_FROM_REG(&ea->ea_regs[1]), ea->ea_regs[1].size,
! 107: 0, 0, &sc->sc_rioh)) {
! 108: printf(": failed to map riohr\n");
! 109: return;
! 110: }
! 111: #endif
! 112:
! 113: if (ebus_bus_map(sc->sc_iot, 0,
! 114: EBUS_PADDR_FROM_REG(&ea->ea_regs[2]), ea->ea_regs[2].size,
! 115: 0, 0, &sc->sc_gpiobankh)) {
! 116: printf(": failed to map gpiobank\n");
! 117: return;
! 118: }
! 119:
! 120: if (ebus_bus_map(sc->sc_iot, 0,
! 121: EBUS_PADDR_FROM_REG(&ea->ea_regs[3]), ea->ea_regs[3].size,
! 122: 0, 0, &sc->sc_gpioh)) {
! 123: printf(": failed to map gpio\n");
! 124: return;
! 125: }
! 126:
! 127: bus_space_write_1(sc->sc_iot, sc->sc_gpiobankh,
! 128: BBC_GPIOBANK_INDEX, 0x22);
! 129: bus_space_read_1(sc->sc_iot, sc->sc_gpiobankh, BBC_GPIOBANK_INDEX);
! 130: reg = bus_space_read_1(sc->sc_iot, sc->sc_gpiobankh, BBC_GPIOBANK_DATA);
! 131: reg &= 0x7f;
! 132: bus_space_write_1(sc->sc_iot, sc->sc_gpiobankh,BBC_GPIOBANK_INDEX, reg);
! 133: bus_space_read_1(sc->sc_iot, sc->sc_gpiobankh, BBC_GPIOBANK_INDEX);
! 134:
! 135:
! 136: sc->sc_blink.bl_func = ppm_led_blink;
! 137: sc->sc_blink.bl_arg = sc;
! 138: blink_led_register(&sc->sc_blink);
! 139: printf("\n");
! 140: }
! 141:
! 142: void
! 143: ppm_led_blink(void *vsc, int on)
! 144: {
! 145: struct ppm_softc *sc = vsc;
! 146: u_int8_t r;
! 147:
! 148: r = bus_space_read_1(sc->sc_iot, sc->sc_gpioh, BBC_GPIO_PORT1_DATA);
! 149: if (on)
! 150: r |= GPIO_P2D_LED;
! 151: else
! 152: r &= ~GPIO_P2D_LED;
! 153: bus_space_write_1(sc->sc_iot, sc->sc_gpioh, BBC_GPIO_PORT1_DATA, r);
! 154: bus_space_read_1(sc->sc_iot, sc->sc_gpioh, BBC_GPIO_PORT1_DATA);
! 155: }
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