Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/zs/zs_macio.c
Version:
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1 /*- 2 * Copyright (c) 2003 Jake Burkholder, Benno Rice. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #include <sys/cdefs.h> 28 __FBSDID("$FreeBSD: releng/6.4/sys/dev/zs/zs_macio.c 133589 2004-08-12 17:41:33Z marius $"); 29 30 #include <sys/param.h> 31 #include <sys/systm.h> 32 #include <sys/module.h> 33 #include <sys/bus.h> 34 #include <sys/interrupt.h> 35 #include <sys/kernel.h> 36 #include <machine/bus.h> 37 #include <machine/resource.h> 38 #include <sys/rman.h> 39 40 #include <dev/ofw/ofw_bus.h> 41 #include <dev/ofw/openfirm.h> 42 43 #include <dev/zs/z8530reg.h> 44 #include <dev/zs/z8530var.h> 45 46 #define ZS_MACIO_CHAN_A 32 47 #define ZS_MACIO_CHAN_B 0 48 49 #define ZS_MACIO_CSR 0 50 #define ZS_MACIO_DATA 16 51 52 #define ZS_MACIO_DEF_SPEED (57600) 53 54 #define ZS_MACIO_CLOCK (9600 * 384) 55 #define ZS_MACIO_CLOCK_DIV (16) 56 57 struct zs_macio_softc { 58 struct zs_softc sc_zs; 59 struct resource *sc_irqres1, *sc_irqres2; 60 int sc_irqrid1, sc_irqrid2; 61 void *sc_ih1, *sc_ih2; 62 struct resource *sc_memres; 63 int sc_memrid; 64 }; 65 66 static int zs_macio_attach(device_t dev); 67 static int zs_macio_detach(device_t dev); 68 static int zs_macio_probe(device_t dev); 69 70 static int zstty_macio_attach(device_t dev); 71 static int zstty_macio_probe(device_t dev); 72 73 static device_method_t zs_macio_methods[] = { 74 DEVMETHOD(device_probe, zs_macio_probe), 75 DEVMETHOD(device_attach, zs_macio_attach), 76 DEVMETHOD(device_detach, zs_macio_detach), 77 78 DEVMETHOD(bus_print_child, bus_generic_print_child), 79 80 { 0, 0 } 81 }; 82 83 static device_method_t zstty_macio_methods[] = { 84 DEVMETHOD(device_probe, zstty_macio_probe), 85 DEVMETHOD(device_attach, zstty_macio_attach), 86 DEVMETHOD(device_detach, bus_generic_detach), 87 88 { 0, 0} 89 }; 90 91 static driver_t zs_macio_driver = { 92 "zs", 93 zs_macio_methods, 94 sizeof(struct zs_macio_softc), 95 }; 96 97 static driver_t zstty_macio_driver = { 98 "zstty", 99 zstty_macio_methods, 100 sizeof(struct zstty_softc), 101 }; 102 103 static devclass_t zs_macio_devclass; 104 static devclass_t zstty_macio_devclass; 105 106 DRIVER_MODULE(zstty, zs, zstty_macio_driver, zstty_macio_devclass, 0, 0); 107 DRIVER_MODULE(zs, macio, zs_macio_driver, zs_macio_devclass, 0, 0); 108 109 static u_char zs_macio_init_reg[16] = { 110 0, /* 0: CMD (reset, etc.) */ 111 0, /* 1: No interrupts yet. */ 112 0, /* IVECT */ 113 ZSWR3_RX_8 | ZSWR3_RX_ENABLE, 114 ZSWR4_CLK_X16 | ZSWR4_ONESB, 115 ZSWR5_TX_8 | ZSWR5_TX_ENABLE, 116 0, /* 6: TXSYNC/SYNCLO */ 117 0, /* 7: RXSYNC/SYNCHI */ 118 0, /* 8: alias for data port */ 119 ZSWR9_MASTER_IE | ZSWR9_NO_VECTOR, 120 0, /*10: Misc. TX/RX control bits */ 121 ZSWR11_TXCLK_BAUD | ZSWR11_RXCLK_BAUD, 122 #if 0 123 ((ZS_MACIO_CLOCK/32)/ZS_MACIO_DEF_SPEED)-2, 124 #endif 125 BPS_TO_TCONST((ZS_MACIO_CLOCK / ZS_MACIO_CLOCK_DIV), ZS_MACIO_DEF_SPEED), 126 0, 127 ZSWR14_BAUD_ENA, 128 ZSWR15_BREAK_IE, 129 }; 130 131 static int 132 zs_macio_probe(device_t dev) 133 { 134 135 if (strcmp(ofw_bus_get_name(dev), "escc") != 0 || 136 device_get_unit(dev) != 0) 137 return (ENXIO); 138 return (zs_probe(dev)); 139 } 140 141 static int 142 zs_macio_attach(device_t dev) 143 { 144 struct zs_macio_softc *sc; 145 146 sc = device_get_softc(dev); 147 148 sc->sc_memres = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 149 &sc->sc_memrid, RF_ACTIVE); 150 if (sc->sc_memres == NULL) { 151 device_printf(dev, "could not allocate memory\n"); 152 goto error; 153 } 154 sc->sc_irqrid1 = 0; 155 sc->sc_irqres1 = bus_alloc_resource_any(dev, SYS_RES_IRQ, 156 &sc->sc_irqrid1, RF_ACTIVE); 157 if (sc->sc_irqres1 == NULL) { 158 device_printf(dev, "could not allocate interrupt 1\n"); 159 goto error; 160 } 161 if (bus_setup_intr(dev, sc->sc_irqres1, INTR_TYPE_TTY | INTR_FAST, 162 zs_intr, sc, &sc->sc_ih1) != 0) { 163 device_printf(dev, "could not setup interrupt 1\n"); 164 goto error; 165 } 166 sc->sc_irqrid2 = 1; 167 sc->sc_irqres2 = bus_alloc_resource_any(dev, SYS_RES_IRQ, 168 &sc->sc_irqrid2, RF_ACTIVE); 169 if (sc->sc_irqres2 == NULL) { 170 device_printf(dev, "could not allocate interrupt 2\n"); 171 goto error; 172 } 173 if (bus_setup_intr(dev, sc->sc_irqres2, INTR_TYPE_TTY | INTR_FAST, 174 zs_intr, sc, &sc->sc_ih2) != 0) { 175 device_printf(dev, "could not setup interrupt 2\n"); 176 goto error; 177 } 178 sc->sc_zs.sc_bt = rman_get_bustag(sc->sc_memres); 179 sc->sc_zs.sc_bh = rman_get_bushandle(sc->sc_memres); 180 return (zs_attach(dev)); 181 182 error: 183 zs_macio_detach(dev); 184 return (ENXIO); 185 } 186 187 static int 188 zs_macio_detach(device_t dev) 189 { 190 struct zs_macio_softc *sc; 191 192 sc = device_get_softc(dev); 193 if (sc->sc_irqres2 != NULL) { 194 if (sc->sc_ih2 != NULL) 195 bus_teardown_intr(dev, sc->sc_irqres2, sc->sc_ih2); 196 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid2, 197 sc->sc_irqres2); 198 } 199 if (sc->sc_irqres1 != NULL) { 200 if (sc->sc_ih1 != NULL) 201 bus_teardown_intr(dev, sc->sc_irqres1, sc->sc_ih1); 202 bus_release_resource(dev, SYS_RES_IRQ, sc->sc_irqrid1, 203 sc->sc_irqres1); 204 } 205 if (sc->sc_memres != NULL) 206 bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid, 207 sc->sc_memres); 208 return (0); 209 } 210 211 static int 212 zstty_macio_probe(device_t dev) 213 { 214 215 if ((device_get_unit(dev) & 1) == 0) 216 device_set_desc(dev, "ttya"); 217 else 218 device_set_desc(dev, "ttyb"); 219 220 return (zstty_probe(dev)); 221 } 222 223 static int 224 zstty_macio_attach(device_t dev) 225 { 226 struct zstty_softc *sc; 227 228 sc = device_get_softc(dev); 229 sc->sc_parent = device_get_softc(device_get_parent(dev)); 230 sc->sc_bt = sc->sc_parent->sc_bt; 231 sc->sc_brg_clk = ZS_MACIO_CLOCK / ZS_MACIO_CLOCK_DIV; 232 233 switch (device_get_unit(dev) & 1) { 234 case 0: 235 bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 236 ZS_MACIO_CHAN_A + ZS_MACIO_CSR, 1, &sc->sc_csr); 237 bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 238 ZS_MACIO_CHAN_A + ZS_MACIO_DATA, 1, &sc->sc_data); 239 break; 240 241 case 1: 242 bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 243 ZS_MACIO_CHAN_B + ZS_MACIO_CSR, 1, &sc->sc_csr); 244 bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 245 ZS_MACIO_CHAN_B + ZS_MACIO_DATA, 1, &sc->sc_data); 246 break; 247 } 248 249 bcopy(zs_macio_init_reg, sc->sc_creg, 16); 250 bcopy(zs_macio_init_reg, sc->sc_preg, 16); 251 252 return (zstty_attach(dev)); 253 } 254 255 void 256 zstty_set_speed(struct zstty_softc *sc, int ospeed) 257 { 258 259 sc->sc_preg[12] = ospeed; 260 sc->sc_preg[13] = ospeed >> 8; 261 } 262 263 int 264 zstty_console(device_t dev, char *mode, int len) 265 { 266 phandle_t chosen, options, parent; 267 ihandle_t stdin, stdout; 268 phandle_t stdinp, stdoutp; 269 char input[32], output[32]; 270 const char *desc; 271 272 chosen = OF_finddevice("/chosen"); 273 options = OF_finddevice("/options"); 274 parent = ofw_bus_get_node(device_get_parent(dev)); 275 if (OF_getprop(chosen, "stdin", &stdin, sizeof(stdin)) == -1 || 276 OF_getprop(chosen, "stdout", &stdout, sizeof(stdout)) == -1 || 277 OF_getprop(options, "input-device", input, sizeof(input)) == -1 || 278 OF_getprop(options, "output-device", output, 279 sizeof(output)) == -1) { 280 return (0); 281 } 282 stdinp = OF_parent(OF_instance_to_package(stdin)); 283 stdoutp = OF_parent(OF_instance_to_package(stdout)); 284 desc = device_get_desc(dev); 285 if (parent == stdinp && parent == stdoutp && 286 input[3] == desc[3] && output[3] == desc[3]) { 287 if (mode != NULL) 288 strlcpy(mode, "57600,8,n,1,-", len); 289 290 return (1); 291 } 292 293 return (0); 294 }
Cache object: 2f983030bca0509a06e0d0826c2ffaa9
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