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 227