Annotation of sys/dev/sbus/asio.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: asio.c,v 1.10 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 serial 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/comvar.h>
! 54:
! 55: #include "asio.h"
! 56:
! 57: #define BAUD_BASE (1843200)
! 58:
! 59: struct asio_port {
! 60: u_int8_t ap_inten;
! 61: bus_space_handle_t ap_bh;
! 62: struct device *ap_dev;
! 63: };
! 64:
! 65: struct asio_softc {
! 66: struct device sc_dev;
! 67: bus_space_tag_t sc_bt;
! 68: bus_space_handle_t sc_csr_h;
! 69: void *sc_ih;
! 70: struct asio_port sc_ports[2];
! 71: int sc_nports;
! 72: };
! 73:
! 74: struct asio_attach_args {
! 75: char *aaa_name;
! 76: int aaa_port;
! 77: bus_space_tag_t aaa_iot;
! 78: bus_space_handle_t aaa_ioh;
! 79: u_int32_t aaa_pri;
! 80: u_int8_t aaa_inten;
! 81: };
! 82:
! 83: int asio_match(struct device *, void *, void *);
! 84: void asio_attach(struct device *, struct device *, void *);
! 85: int asio_print(void *, const char *);
! 86: void asio_intr_enable(struct device *, u_int8_t);
! 87:
! 88: struct cfattach asio_ca = {
! 89: sizeof(struct asio_softc), asio_match, asio_attach
! 90: };
! 91:
! 92: struct cfdriver asio_cd = {
! 93: NULL, "asio", DV_DULL
! 94: };
! 95:
! 96: int
! 97: asio_match(struct device *parent, void *match, void *aux)
! 98: {
! 99: struct sbus_attach_args *sa = aux;
! 100:
! 101: if (strcmp(sa->sa_name, "sio2") == 0)
! 102: return (1);
! 103: return (0);
! 104: }
! 105:
! 106: void
! 107: asio_attach(struct device *parent, struct device *self, void *aux)
! 108: {
! 109: struct asio_softc *sc = (void *)self;
! 110: struct sbus_attach_args *sa = aux;
! 111: struct asio_attach_args aaa;
! 112: int i;
! 113: char *model;
! 114:
! 115: sc->sc_bt = sa->sa_bustag;
! 116: sc->sc_nports = 2;
! 117:
! 118: model = getpropstring(sa->sa_node, "model");
! 119: if (model == NULL) {
! 120: printf(": empty model, unsupported\n");
! 121: return;
! 122: }
! 123: if (strcmp(model, "210sj") != 0) {
! 124: printf(": unsupported model %s\n", model);
! 125: return;
! 126: }
! 127:
! 128: if (sa->sa_nreg < 3) {
! 129: printf(": %d registers expected, got %d\n",
! 130: 3, sa->sa_nreg);
! 131: return;
! 132: }
! 133:
! 134: if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[0].sbr_slot,
! 135: sa->sa_reg[0].sbr_offset, sa->sa_reg[0].sbr_size,
! 136: 0, 0, &sc->sc_csr_h)) {
! 137: printf(": couldn't map csr\n");
! 138: return;
! 139: }
! 140:
! 141: for (i = 0; i < sc->sc_nports; i++) {
! 142: if (sbus_bus_map(sa->sa_bustag, sa->sa_reg[i + 1].sbr_slot,
! 143: sa->sa_reg[i + 1].sbr_offset, sa->sa_reg[i + 1].sbr_size,
! 144: 0, 0, &sc->sc_ports[i].ap_bh)) {
! 145: printf(": couldn't map uart%d\n", i);
! 146: return;
! 147: }
! 148: }
! 149:
! 150: sc->sc_ports[0].ap_inten = ASIO_CSR_SJ_UART0_INTEN;
! 151: sc->sc_ports[1].ap_inten = ASIO_CSR_UART1_INTEN;
! 152:
! 153: printf(": %s\n", model);
! 154:
! 155: for (i = 0; i < sc->sc_nports; i++) {
! 156: aaa.aaa_name = "com";
! 157: aaa.aaa_port = i;
! 158: aaa.aaa_iot = sc->sc_bt;
! 159: aaa.aaa_ioh = sc->sc_ports[i].ap_bh;
! 160: aaa.aaa_inten = sc->sc_ports[i].ap_inten;
! 161: aaa.aaa_pri = sa->sa_intr[0].sbi_pri;
! 162: sc->sc_ports[i].ap_dev = config_found(self, &aaa, asio_print);
! 163: }
! 164: }
! 165:
! 166: int
! 167: asio_print(void *aux, const char *name)
! 168: {
! 169: struct asio_attach_args *aaa = aux;
! 170:
! 171: if (name != NULL)
! 172: printf("%s at %s", aaa->aaa_name, name);
! 173: printf(" port %d", aaa->aaa_port);
! 174: return (UNCONF);
! 175: }
! 176:
! 177: #if NCOM_ASIO > 0
! 178: int com_asio_match(struct device *, void *, void *);
! 179: void com_asio_attach(struct device *, struct device *, void *);
! 180:
! 181: struct cfattach com_asio_ca = {
! 182: sizeof(struct com_softc), com_asio_match, com_asio_attach
! 183: };
! 184:
! 185: void
! 186: asio_intr_enable(struct device *dv, u_int8_t en)
! 187: {
! 188: struct asio_softc *sc = (struct asio_softc *)dv;
! 189: u_int8_t csr;
! 190:
! 191: csr = bus_space_read_1(sc->sc_bt, sc->sc_csr_h, 0);
! 192: csr &= ~(ASIO_CSR_SBUS_INT7 | ASIO_CSR_SBUS_INT6);
! 193: csr |= ASIO_CSR_SBUS_INT5 | en;
! 194: bus_space_write_1(sc->sc_bt, sc->sc_csr_h, 0, csr);
! 195: }
! 196:
! 197: int
! 198: com_asio_match(struct device *parent, void *match, void *aux)
! 199: {
! 200: return (1);
! 201: }
! 202:
! 203: void
! 204: com_asio_attach(struct device *parent, struct device *self, void *aux)
! 205: {
! 206: struct com_softc *sc = (struct com_softc *)self;
! 207: struct asio_attach_args *aaa = aux;
! 208:
! 209: sc->sc_iot = aaa->aaa_iot;
! 210: sc->sc_ioh = aaa->aaa_ioh;
! 211: sc->sc_iobase = 0; /* XXX WTF is iobase for? It used to be the lower 32 bits of ioh's vaddr... */
! 212: sc->sc_hwflags = 0;
! 213: sc->sc_swflags = 0;
! 214: sc->sc_frequency = BAUD_BASE;
! 215:
! 216: sc->sc_ih = bus_intr_establish(aaa->aaa_iot, aaa->aaa_pri,
! 217: IPL_TTY, 0, comintr, sc, self->dv_xname);
! 218: if (sc->sc_ih == NULL) {
! 219: printf(": cannot allocate intr\n");
! 220: return;
! 221: }
! 222: asio_intr_enable(parent, aaa->aaa_inten);
! 223:
! 224: com_attach_subr(sc);
! 225: }
! 226: #endif
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