Annotation of sys/dev/sbus/apio.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: apio.c,v 1.7 2003/06/27 01:50:52 jason 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: * Effort sponsored in part by the Defense Advanced Research Projects
! 29: * Agency (DARPA) and Air Force Research Laboratory, Air Force
! 30: * Materiel Command, USAF, under agreement number F30602-01-2-0537.
! 31: *
! 32: */
! 33:
! 34: /*
! 35: * Driver for Aurora 210SJ parallel ports.
! 36: */
! 37:
! 38: #include <sys/types.h>
! 39: #include <sys/param.h>
! 40: #include <sys/systm.h>
! 41: #include <sys/kernel.h>
! 42: #include <sys/device.h>
! 43: #include <sys/conf.h>
! 44: #include <sys/timeout.h>
! 45: #include <sys/tty.h>
! 46:
! 47: #include <machine/bus.h>
! 48: #include <machine/autoconf.h>
! 49: #include <machine/openfirm.h>
! 50:
! 51: #include <dev/sbus/sbusvar.h>
! 52: #include <dev/sbus/asioreg.h>
! 53: #include <dev/ic/lptvar.h>
! 54: #include "apio.h"
! 55: #include "lpt.h"
! 56:
! 57: struct apio_softc {
! 58: struct device sc_dev;
! 59: bus_space_tag_t sc_bt;
! 60: bus_space_handle_t sc_csr_h;
! 61: bus_space_handle_t sc_clk_h;
! 62: bus_space_handle_t sc_lpt_h;
! 63: void *sc_ih;
! 64: struct device *sc_port;
! 65: };
! 66:
! 67: struct apio_attach_args {
! 68: char *aaa_name;
! 69: bus_space_tag_t aaa_iot;
! 70: bus_space_handle_t aaa_ioh;
! 71: bus_space_handle_t aaa_clkh;
! 72: u_int32_t aaa_pri;
! 73: u_int8_t aaa_inten;
! 74: };
! 75:
! 76: int apio_match(struct device *, void *, void *);
! 77: void apio_attach(struct device *, struct device *, void *);
! 78: int apio_print(void *, const char *);
! 79: void apio_intr_enable(struct device *, u_int8_t);
! 80:
! 81: struct cfattach apio_ca = {
! 82: sizeof(struct apio_softc), apio_match, apio_attach
! 83: };
! 84:
! 85: struct cfdriver apio_cd = {
! 86: NULL, "apio", DV_DULL
! 87: };
! 88:
! 89: int
! 90: apio_match(struct device *parent, void *match, void *aux)
! 91: {
! 92: struct sbus_attach_args *sa = aux;
! 93:
! 94: if (strcmp(sa->sa_name, "pio1") == 0)
! 95: return (1);
! 96: return (0);
! 97: }
! 98:
! 99: void
! 100: apio_attach(struct device *parent, struct device *self, void *aux)
! 101: {
! 102: struct apio_softc *sc = (void *)self;
! 103: struct sbus_attach_args *sa = aux;
! 104: struct apio_attach_args aaa;
! 105: char *model;
! 106:
! 107: sc->sc_bt = sa->sa_bustag;
! 108:
! 109: model = getpropstring(sa->sa_node, "model");
! 110: if (model == NULL) {
! 111: printf(": empty model, unsupported\n");
! 112: return;
! 113: }
! 114: if (strcmp(model, "210sj") != 0) {
! 115: printf(": unsupported model %s\n", model);
! 116: return;
! 117: }
! 118:
! 119: if (sa->sa_nreg < 3) {
! 120: printf(": %d registers expected, got %d\n",
! 121: 3, sa->sa_nreg);
! 122: return;
! 123: }
! 124:
! 125: if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot,
! 126: sa->sa_reg[0].sbr_offset, sa->sa_reg[0].sbr_size,
! 127: 0, 0, &sc->sc_csr_h)) {
! 128: printf(": couldn't map csr\n");
! 129: return;
! 130: }
! 131:
! 132: if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[1].sbr_slot,
! 133: sa->sa_reg[1].sbr_offset, sa->sa_reg[1].sbr_size,
! 134: 0, 0, &sc->sc_clk_h)) {
! 135: printf(": couldn't map clk\n");
! 136: return;
! 137: }
! 138:
! 139: if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[2].sbr_slot,
! 140: sa->sa_reg[2].sbr_offset, sa->sa_reg[2].sbr_size,
! 141: 0, 0, &sc->sc_lpt_h)) {
! 142: printf(": couldn't map clk\n");
! 143: return;
! 144: }
! 145:
! 146: printf(": %s\n", model);
! 147:
! 148: aaa.aaa_name = "lpt";
! 149: aaa.aaa_iot = sc->sc_bt;
! 150: aaa.aaa_ioh = sc->sc_lpt_h;
! 151: aaa.aaa_clkh = sc->sc_clk_h;
! 152: aaa.aaa_inten = ASIO_CSR_SJ_PAR_INTEN;
! 153: aaa.aaa_pri = sa->sa_intr[0].sbi_pri;
! 154: sc->sc_port = config_found(self, &aaa, apio_print);
! 155: }
! 156:
! 157: int
! 158: apio_print(void *aux, const char *name)
! 159: {
! 160: struct apio_attach_args *aaa = aux;
! 161:
! 162: if (name != NULL)
! 163: printf("%s at %s", aaa->aaa_name, name);
! 164: return (UNCONF);
! 165: }
! 166:
! 167: #if NLPT_APIO > 0
! 168: int lpt_apio_match(struct device *, void *, void *);
! 169: void lpt_apio_attach(struct device *, struct device *, void *);
! 170: int lpt_apio_intr(void *);
! 171:
! 172: struct lpt_apio_softc {
! 173: struct lpt_softc sc_lpt;
! 174: bus_space_handle_t sc_clk_h;
! 175: void *sc_ih;
! 176: };
! 177:
! 178: struct cfattach lpt_apio_ca = {
! 179: sizeof(struct lpt_apio_softc), lpt_apio_match, lpt_apio_attach
! 180: };
! 181:
! 182: void
! 183: apio_intr_enable(struct device *dv, u_int8_t en)
! 184: {
! 185: struct apio_softc *sc = (struct apio_softc *)dv;
! 186: u_int8_t csr;
! 187:
! 188: csr = bus_space_read_1(sc->sc_bt, sc->sc_csr_h, 0);
! 189: csr &= ~(ASIO_CSR_SBUS_INT7 | ASIO_CSR_SBUS_INT6);
! 190: csr |= ASIO_CSR_SBUS_INT5 | en;
! 191: bus_space_write_1(sc->sc_bt, sc->sc_csr_h, 0, csr);
! 192: }
! 193:
! 194: int
! 195: lpt_apio_match(struct device *parent, void *match, void *aux)
! 196: {
! 197: return (1);
! 198: }
! 199:
! 200: void
! 201: lpt_apio_attach(struct device *parent, struct device *self, void *aux)
! 202: {
! 203: struct lpt_apio_softc *sc = (struct lpt_apio_softc *)self;
! 204: struct apio_attach_args *aaa = aux;
! 205:
! 206: sc->sc_lpt.sc_state = 0;
! 207: sc->sc_lpt.sc_iot = aaa->aaa_iot;
! 208: sc->sc_lpt.sc_ioh = aaa->aaa_ioh;
! 209: sc->sc_clk_h = aaa->aaa_clkh;
! 210: sc->sc_ih = bus_intr_establish(aaa->aaa_iot, aaa->aaa_pri,
! 211: IPL_TTY, 0, lpt_apio_intr, sc, self->dv_xname);
! 212: if (sc->sc_ih == NULL) {
! 213: printf(": cannot allocate intr\n");
! 214: return;
! 215: }
! 216: apio_intr_enable(parent, aaa->aaa_inten);
! 217:
! 218: lpt_attach_common(&sc->sc_lpt);
! 219: }
! 220:
! 221: int
! 222: lpt_apio_intr(void *vsc)
! 223: {
! 224: struct lpt_apio_softc *sc = vsc;
! 225: int r;
! 226:
! 227: r = lptintr(&sc->sc_lpt);
! 228: bus_space_read_1(sc->sc_lpt.sc_iot, sc->sc_clk_h, 0);
! 229: return (r);
! 230: }
! 231: #endif
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