Annotation of sys/arch/sparc64/dev/pckbc_ebus.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: pckbc_ebus.c,v 1.7 2004/11/02 21:17:39 miod Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 2002 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: /*
! 30: * Driver for i8042 keyboard controller found on some PCI based
! 31: * UltraSPARCs
! 32: *
! 33: * Effort sponsored in part by the Defense Advanced Research Projects
! 34: * Agency (DARPA) and Air Force Research Laboratory, Air Force
! 35: * Materiel Command, USAF, under agreement number F30602-01-2-0537.
! 36: *
! 37: */
! 38:
! 39: #include <sys/types.h>
! 40: #include <sys/param.h>
! 41: #include <sys/systm.h>
! 42: #include <sys/device.h>
! 43: #include <sys/conf.h>
! 44: #include <sys/malloc.h>
! 45:
! 46: #include <machine/bus.h>
! 47: #include <machine/autoconf.h>
! 48: #include <machine/openfirm.h>
! 49:
! 50: #include <sparc64/dev/ebusreg.h>
! 51: #include <sparc64/dev/ebusvar.h>
! 52:
! 53: #include <dev/ic/i8042reg.h>
! 54: #include <dev/ic/pckbcvar.h>
! 55:
! 56: struct pckbc_ebus_softc {
! 57: struct pckbc_softc sc_pckbc;
! 58: bus_space_tag_t sc_iot;
! 59: bus_space_handle_t sc_ioh;
! 60: bus_space_handle_t sc_ioh_c;
! 61: bus_space_handle_t sc_ioh_d;
! 62: void *sc_irq[2];
! 63: int sc_node;
! 64: };
! 65:
! 66: int pckbc_ebus_match(struct device *, void *, void *);
! 67: void pckbc_ebus_attach(struct device *, struct device *, void *);
! 68:
! 69: struct cfattach pckbc_ebus_ca = {
! 70: sizeof(struct pckbc_ebus_softc), pckbc_ebus_match, pckbc_ebus_attach
! 71: };
! 72:
! 73: void pckbc_ebus_intr_establish(struct pckbc_softc *, pckbc_slot_t);
! 74: int pckbc_ebus_is_console(struct pckbc_ebus_softc *);
! 75:
! 76: int
! 77: pckbc_ebus_match(parent, match, aux)
! 78: struct device *parent;
! 79: void *match;
! 80: void *aux;
! 81: {
! 82: struct ebus_attach_args *ea = aux;
! 83:
! 84: if (strcmp(ea->ea_name, "8042") == 0)
! 85: return (1);
! 86: return (0);
! 87: }
! 88:
! 89: void
! 90: pckbc_ebus_attach(parent, self, aux)
! 91: struct device *parent, *self;
! 92: void *aux;
! 93: {
! 94: struct pckbc_ebus_softc *sc = (void *)self;
! 95: struct pckbc_softc *psc = &sc->sc_pckbc;
! 96: struct ebus_attach_args *ea = aux;
! 97: struct pckbc_internal *t = NULL;
! 98: int console;
! 99:
! 100: sc->sc_node = ea->ea_node;
! 101: console = pckbc_ebus_is_console(sc);
! 102:
! 103: /* Use prom address if available, otherwise map it. */
! 104: if (ea->ea_nvaddrs && bus_space_map(ea->ea_iotag, ea->ea_vaddrs[0], 0,
! 105: 0, &sc->sc_ioh) == 0) {
! 106: sc->sc_iot = ea->ea_iotag;
! 107: } else if (ebus_bus_map(ea->ea_iotag, 0,
! 108: EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), ea->ea_regs[0].size,
! 109: 0, 0, &sc->sc_ioh) == 0) {
! 110: sc->sc_iot = ea->ea_iotag;
! 111: } else if (ebus_bus_map(ea->ea_memtag, 0,
! 112: EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), ea->ea_regs[0].size,
! 113: 0, 0, &sc->sc_ioh) == 0) {
! 114: sc->sc_iot = ea->ea_memtag;
! 115: } else {
! 116: printf(": can't map register space\n");
! 117: return;
! 118: }
! 119:
! 120: if (console) {
! 121: if (pckbc_cnattach(sc->sc_iot,
! 122: EBUS_PADDR_FROM_REG(&ea->ea_regs[0]), KBCMDP,
! 123: PCKBC_KBD_SLOT) == 0) {
! 124: t = &pckbc_consdata;
! 125: pckbc_console_attached = 1;
! 126: sc->sc_ioh_c = t->t_ioh_c;
! 127: sc->sc_ioh_d = t->t_ioh_d;
! 128: } else
! 129: console = 0;
! 130: }
! 131:
! 132: if (console == 0) {
! 133: if (bus_space_subregion(sc->sc_iot, sc->sc_ioh,
! 134: KBCMDP, sizeof(u_int32_t), &sc->sc_ioh_c) != 0) {
! 135: printf(": couldn't get cmd subregion\n");
! 136: return;
! 137: }
! 138: if (bus_space_subregion(sc->sc_iot, sc->sc_ioh,
! 139: KBDATAP, sizeof(u_int32_t), &sc->sc_ioh_d) != 0) {
! 140: printf(": couldn't get data subregion\n");
! 141: return;
! 142: }
! 143:
! 144: t = malloc(sizeof(struct pckbc_internal), M_DEVBUF, M_NOWAIT);
! 145: bzero(t, sizeof(struct pckbc_internal));
! 146: }
! 147:
! 148: psc->intr_establish = pckbc_ebus_intr_establish;
! 149:
! 150: sc->sc_irq[0] = bus_intr_establish(sc->sc_iot, ea->ea_intrs[0],
! 151: IPL_TTY, 0, pckbcintr, psc, self->dv_xname);
! 152: if (sc->sc_irq[0] == NULL) {
! 153: printf(": couldn't get intr0\n");
! 154: return;
! 155: }
! 156:
! 157: sc->sc_irq[1] = bus_intr_establish(sc->sc_iot, ea->ea_intrs[1],
! 158: IPL_TTY, 0, pckbcintr, psc, self->dv_xname);
! 159: if (sc->sc_irq[1] == NULL) {
! 160: printf(": couldn't get intr1\n");
! 161: return;
! 162: }
! 163:
! 164: t->t_iot = sc->sc_iot;
! 165: t->t_ioh_c = sc->sc_ioh_c;
! 166: t->t_ioh_d = sc->sc_ioh_d;
! 167: t->t_cmdbyte = KC8_CPU;
! 168: t->t_sc = psc;
! 169: psc->id = t;
! 170:
! 171: printf("\n");
! 172: pckbc_attach(psc);
! 173:
! 174: }
! 175:
! 176: int
! 177: pckbc_ebus_is_console(sc)
! 178: struct pckbc_ebus_softc *sc;
! 179: {
! 180: char *name;
! 181: int node;
! 182:
! 183: /*
! 184: * Loop through the children of 8042 and see if the keyboard
! 185: * exists, and further, whether it is the console input device.
! 186: * This is almost redundant because 8042 doesn't show up in
! 187: * device tree unless a keyboard is in fact attached.
! 188: */
! 189: for (node = OF_child(sc->sc_node); node; node = OF_peer(node)) {
! 190: name = getpropstring(node, "name");
! 191: if (name == NULL)
! 192: continue;
! 193: if (strcmp("kb_ps2", name) == 0 ||
! 194: strcmp("keyboard", name) == 0) {
! 195: if (node == OF_instance_to_package(OF_stdin()))
! 196: return (1);
! 197: }
! 198: }
! 199: return (0);
! 200: }
! 201:
! 202: void
! 203: pckbc_ebus_intr_establish(psc, slot)
! 204: struct pckbc_softc *psc;
! 205: pckbc_slot_t slot;
! 206: {
! 207: /* Nothing to do, interrupts were mapped in attach. */
! 208: }
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