iomd.c revision 1.2.2.3
1 1.2.2.3 jdolecek /* $NetBSD: iomd.c,v 1.2.2.3 2002/06/23 17:34:52 jdolecek Exp $ */ 2 1.2.2.2 thorpej 3 1.2.2.2 thorpej /* 4 1.2.2.2 thorpej * Copyright (c) 1996-1997 Mark Brinicombe. 5 1.2.2.2 thorpej * Copyright (c) 1997 Causality Limited 6 1.2.2.2 thorpej * All rights reserved. 7 1.2.2.2 thorpej * 8 1.2.2.2 thorpej * Redistribution and use in source and binary forms, with or without 9 1.2.2.2 thorpej * modification, are permitted provided that the following conditions 10 1.2.2.2 thorpej * are met: 11 1.2.2.2 thorpej * 1. Redistributions of source code must retain the above copyright 12 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer. 13 1.2.2.2 thorpej * 2. Redistributions in binary form must reproduce the above copyright 14 1.2.2.2 thorpej * notice, this list of conditions and the following disclaimer in the 15 1.2.2.2 thorpej * documentation and/or other materials provided with the distribution. 16 1.2.2.2 thorpej * 3. All advertising materials mentioning features or use of this software 17 1.2.2.2 thorpej * must display the following acknowledgement: 18 1.2.2.2 thorpej * This product includes software developed by Mark Brinicombe. 19 1.2.2.2 thorpej * 4. The name of the company nor the name of the author may be used to 20 1.2.2.2 thorpej * endorse or promote products derived from this software without specific 21 1.2.2.2 thorpej * prior written permission. 22 1.2.2.2 thorpej * 23 1.2.2.2 thorpej * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 1.2.2.2 thorpej * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 1.2.2.2 thorpej * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 1.2.2.2 thorpej * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 27 1.2.2.2 thorpej * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 28 1.2.2.2 thorpej * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 29 1.2.2.2 thorpej * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 1.2.2.2 thorpej * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 1.2.2.2 thorpej * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 1.2.2.2 thorpej * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 1.2.2.2 thorpej * SUCH DAMAGE. 34 1.2.2.2 thorpej * 35 1.2.2.2 thorpej * RiscBSD kernel project 36 1.2.2.2 thorpej * 37 1.2.2.2 thorpej * iomd.c 38 1.2.2.2 thorpej * 39 1.2.2.2 thorpej * Probing and configuration for the IOMD 40 1.2.2.2 thorpej * 41 1.2.2.2 thorpej * Created : 10/10/95 42 1.2.2.2 thorpej * Updated : 18/03/01 for rpckbd as part of the wscons project 43 1.2.2.2 thorpej */ 44 1.2.2.2 thorpej 45 1.2.2.2 thorpej #include <sys/param.h> 46 1.2.2.2 thorpej #include <sys/systm.h> 47 1.2.2.2 thorpej #include <sys/kernel.h> 48 1.2.2.2 thorpej #include <sys/conf.h> 49 1.2.2.2 thorpej #include <sys/malloc.h> 50 1.2.2.2 thorpej #include <sys/device.h> 51 1.2.2.2 thorpej #include <machine/bus.h> 52 1.2.2.2 thorpej #include <machine/cpu.h> 53 1.2.2.2 thorpej #include <machine/intr.h> 54 1.2.2.2 thorpej #include <arm/iomd/iomdreg.h> 55 1.2.2.2 thorpej #include <arm/iomd/iomdvar.h> 56 1.2.2.2 thorpej 57 1.2.2.2 thorpej #include "iomd.h" 58 1.2.2.2 thorpej 59 1.2.2.2 thorpej /* 60 1.2.2.2 thorpej * IOMD device. 61 1.2.2.2 thorpej * 62 1.2.2.2 thorpej * This probes and attaches the top level IOMD device. 63 1.2.2.2 thorpej * It then configures any children of the IOMD device. 64 1.2.2.2 thorpej */ 65 1.2.2.2 thorpej 66 1.2.2.2 thorpej /* 67 1.2.2.2 thorpej * IOMD softc structure. 68 1.2.2.2 thorpej * 69 1.2.2.2 thorpej * Contains the device node, bus space tag, handle and address 70 1.2.2.2 thorpej * and the IOMD id. 71 1.2.2.2 thorpej */ 72 1.2.2.2 thorpej 73 1.2.2.2 thorpej struct iomd_softc { 74 1.2.2.2 thorpej struct device sc_dev; /* device node */ 75 1.2.2.2 thorpej bus_space_tag_t sc_iot; /* bus tag */ 76 1.2.2.2 thorpej bus_space_handle_t sc_ioh; /* bus handle */ 77 1.2.2.2 thorpej int sc_id; /* IOMD id */ 78 1.2.2.2 thorpej }; 79 1.2.2.2 thorpej 80 1.2.2.2 thorpej static int iomdmatch __P((struct device *parent, struct cfdata *cf, 81 1.2.2.2 thorpej void *aux)); 82 1.2.2.2 thorpej static void iomdattach __P((struct device *parent, struct device *self, 83 1.2.2.2 thorpej void *aux)); 84 1.2.2.2 thorpej static int iomdprint __P((void *aux, const char *iomdbus)); 85 1.2.2.2 thorpej 86 1.2.2.2 thorpej struct cfattach iomd_ca = { 87 1.2.2.2 thorpej sizeof(struct iomd_softc), iomdmatch, iomdattach 88 1.2.2.2 thorpej }; 89 1.2.2.2 thorpej 90 1.2.2.2 thorpej extern struct bus_space iomd_bs_tag; 91 1.2.2.2 thorpej 92 1.2.2.2 thorpej int iomd_found; 93 1.2.2.2 thorpej u_int32_t iomd_base = IOMD_BASE; 94 1.2.2.2 thorpej 95 1.2.2.2 thorpej /* following flag is used in iomd_irq.s ... has to be cleaned up one day ! */ 96 1.2.2.2 thorpej u_int32_t arm7500_ioc_found = 0; 97 1.2.2.2 thorpej 98 1.2.2.2 thorpej 99 1.2.2.2 thorpej /* Declare prototypes */ 100 1.2.2.2 thorpej 101 1.2.2.2 thorpej /* 102 1.2.2.2 thorpej * int iomdprint(void *aux, const char *name) 103 1.2.2.2 thorpej * 104 1.2.2.2 thorpej * print configuration info for children 105 1.2.2.2 thorpej */ 106 1.2.2.2 thorpej 107 1.2.2.2 thorpej static int 108 1.2.2.2 thorpej iomdprint(aux, name) 109 1.2.2.2 thorpej void *aux; 110 1.2.2.2 thorpej const char *name; 111 1.2.2.2 thorpej { 112 1.2.2.2 thorpej /* union iomd_attach_args *ia = aux;*/ 113 1.2.2.2 thorpej 114 1.2.2.2 thorpej return(QUIET); 115 1.2.2.2 thorpej } 116 1.2.2.2 thorpej 117 1.2.2.2 thorpej /* 118 1.2.2.2 thorpej * int iomdmatch(struct device *parent, struct cfdata *cf, void *aux) 119 1.2.2.2 thorpej * 120 1.2.2.2 thorpej * Just return ok for this if it is device 0 121 1.2.2.2 thorpej */ 122 1.2.2.2 thorpej 123 1.2.2.2 thorpej static int 124 1.2.2.2 thorpej iomdmatch(parent, cf, aux) 125 1.2.2.2 thorpej struct device *parent; 126 1.2.2.2 thorpej struct cfdata *cf; 127 1.2.2.2 thorpej void *aux; 128 1.2.2.2 thorpej { 129 1.2.2.2 thorpej if (iomd_found) 130 1.2.2.2 thorpej return 0; 131 1.2.2.2 thorpej return 1; 132 1.2.2.2 thorpej } 133 1.2.2.2 thorpej 134 1.2.2.2 thorpej 135 1.2.2.2 thorpej /* 136 1.2.2.2 thorpej * void iomdattach(struct device *parent, struct device *dev, void *aux) 137 1.2.2.2 thorpej * 138 1.2.2.2 thorpej * Map the IOMD and identify it. 139 1.2.2.2 thorpej * Then configure the child devices based on the IOMD ID. 140 1.2.2.2 thorpej */ 141 1.2.2.2 thorpej 142 1.2.2.2 thorpej static void 143 1.2.2.2 thorpej iomdattach(parent, self, aux) 144 1.2.2.2 thorpej struct device *parent; 145 1.2.2.2 thorpej struct device *self; 146 1.2.2.2 thorpej void *aux; 147 1.2.2.2 thorpej { 148 1.2.2.2 thorpej struct iomd_softc *sc = (struct iomd_softc *)self; 149 1.2.2.2 thorpej /* struct mainbus_attach_args *mb = aux;*/ 150 1.2.2.2 thorpej int refresh; 151 1.2.2.2 thorpej #if 0 152 1.2.2.2 thorpej int dma_time; 153 1.2.2.2 thorpej int combo_time; 154 1.2.2.2 thorpej int loop; 155 1.2.2.2 thorpej #endif 156 1.2.2.2 thorpej union iomd_attach_args ia; 157 1.2.2.2 thorpej bus_space_tag_t iot; 158 1.2.2.2 thorpej bus_space_handle_t ioh; 159 1.2.2.2 thorpej 160 1.2.2.2 thorpej /* There can be only 1 IOMD. */ 161 1.2.2.2 thorpej iomd_found = 1; 162 1.2.2.2 thorpej 163 1.2.2.2 thorpej iot = sc->sc_iot = &iomd_bs_tag; 164 1.2.2.2 thorpej 165 1.2.2.2 thorpej /* Map the IOMD */ 166 1.2.2.2 thorpej if (bus_space_map(iot, (int) iomd_base, IOMD_SIZE, 0, &ioh)) 167 1.2.2.2 thorpej panic("%s: Cannot map registers\n", self->dv_xname); 168 1.2.2.2 thorpej 169 1.2.2.2 thorpej sc->sc_ioh = ioh; 170 1.2.2.2 thorpej 171 1.2.2.2 thorpej /* Get the ID */ 172 1.2.2.2 thorpej sc->sc_id = bus_space_read_1(iot, ioh, IOMD_ID0) 173 1.2.2.2 thorpej | (bus_space_read_1(iot, ioh, IOMD_ID1) << 8); 174 1.2.2.2 thorpej printf(": "); 175 1.2.2.2 thorpej 176 1.2.2.2 thorpej /* Identify it and get the DRAM refresh rate */ 177 1.2.2.2 thorpej switch (sc->sc_id) { 178 1.2.2.2 thorpej case ARM7500_IOC_ID: 179 1.2.2.2 thorpej printf("ARM7500 IOMD "); 180 1.2.2.2 thorpej refresh = bus_space_read_1(iot, ioh, IOMD_REFCR) & 0x0f; 181 1.2.2.2 thorpej arm7500_ioc_found = 1; 182 1.2.2.2 thorpej break; 183 1.2.2.2 thorpej case ARM7500FE_IOC_ID: 184 1.2.2.2 thorpej printf("ARM7500FE IOMD "); 185 1.2.2.2 thorpej refresh = bus_space_read_1(iot, ioh, IOMD_REFCR) & 0x0f; 186 1.2.2.2 thorpej arm7500_ioc_found = 1; 187 1.2.2.2 thorpej break; 188 1.2.2.2 thorpej case RPC600_IOMD_ID: 189 1.2.2.2 thorpej printf("IOMD20 "); 190 1.2.2.2 thorpej refresh = bus_space_read_1(iot, ioh, IOMD_VREFCR) & 0x09; 191 1.2.2.2 thorpej arm7500_ioc_found = 0; 192 1.2.2.2 thorpej break; 193 1.2.2.2 thorpej default: 194 1.2.2.2 thorpej printf("Unknown IOMD ID=%04x ", sc->sc_id); 195 1.2.2.2 thorpej refresh = -1; 196 1.2.2.2 thorpej arm7500_ioc_found = 0; /* just in case */ 197 1.2.2.2 thorpej break; 198 1.2.2.2 thorpej } 199 1.2.2.2 thorpej printf("version %d\n", bus_space_read_1(iot, ioh, IOMD_VERSION)); 200 1.2.2.2 thorpej 201 1.2.2.2 thorpej /* Report the DRAM refresh rate */ 202 1.2.2.2 thorpej printf("%s: ", self->dv_xname); 203 1.2.2.2 thorpej printf("DRAM refresh="); 204 1.2.2.2 thorpej switch (refresh) { 205 1.2.2.2 thorpej case 0x0: 206 1.2.2.2 thorpej printf("off"); 207 1.2.2.2 thorpej break; 208 1.2.2.2 thorpej case 0x1: 209 1.2.2.2 thorpej printf("16us"); 210 1.2.2.2 thorpej break; 211 1.2.2.2 thorpej case 0x2: 212 1.2.2.2 thorpej printf("32us"); 213 1.2.2.2 thorpej break; 214 1.2.2.2 thorpej case 0x4: 215 1.2.2.2 thorpej printf("64us"); 216 1.2.2.2 thorpej break; 217 1.2.2.2 thorpej case 0x8: 218 1.2.2.2 thorpej printf("128us"); 219 1.2.2.2 thorpej break; 220 1.2.2.2 thorpej default: 221 1.2.2.2 thorpej printf("unknown [%02x]", refresh); 222 1.2.2.2 thorpej break; 223 1.2.2.2 thorpej } 224 1.2.2.2 thorpej 225 1.2.2.2 thorpej #if 0 226 1.2.2.2 thorpej /* 227 1.2.2.2 thorpej * No point in reporting this as it may get changed when devices are 228 1.2.2.2 thorpej * attached 229 1.2.2.2 thorpej */ 230 1.2.2.2 thorpej dma_time = ReadByte(IOMD_DMATCR); 231 1.2.2.2 thorpej printf(", dma cycle types="); 232 1.2.2.2 thorpej for (loop = 0; loop < 4; ++loop,dma_time = dma_time >> 2) 233 1.2.2.2 thorpej printf("%c", 'A' + (dma_time & 3)); 234 1.2.2.2 thorpej 235 1.2.2.2 thorpej combo_time = ReadByte(IOMD_IOTCR); 236 1.2.2.2 thorpej printf(", combo cycle type=%c", 'A' + ((combo_time >> 2) & 3)); 237 1.2.2.2 thorpej #endif 238 1.2.2.2 thorpej printf("\n"); 239 1.2.2.2 thorpej 240 1.2.2.2 thorpej /* Set up the external DMA channels */ 241 1.2.2.2 thorpej /* XXX - this should be machine dependant not IOMD dependant */ 242 1.2.2.2 thorpej switch (sc->sc_id) { 243 1.2.2.2 thorpej case ARM7500_IOC_ID: 244 1.2.2.2 thorpej case ARM7500FE_IOC_ID: 245 1.2.2.2 thorpej break; 246 1.2.2.2 thorpej case RPC600_IOMD_ID: 247 1.2.2.2 thorpej /* DMA channels 2 & 3 are external */ 248 1.2.2.2 thorpej bus_space_write_1(iot, ioh, IOMD_DMAEXT, 0x0c); 249 1.2.2.2 thorpej break; 250 1.2.2.2 thorpej } 251 1.2.2.2 thorpej 252 1.2.2.2 thorpej /* Configure the child devices */ 253 1.2.2.2 thorpej 254 1.2.2.2 thorpej /* Attach clock device */ 255 1.2.2.2 thorpej 256 1.2.2.2 thorpej ia.ia_clk.ca_name = "clk"; 257 1.2.2.2 thorpej ia.ia_clk.ca_iot = iot; 258 1.2.2.2 thorpej ia.ia_clk.ca_ioh = ioh; 259 1.2.2.2 thorpej config_found(self, &ia, iomdprint); 260 1.2.2.2 thorpej 261 1.2.2.2 thorpej /* Attach kbd device when configured */ 262 1.2.2.2 thorpej if (bus_space_subregion(iot, ioh, IOMD_KBDDAT, 8, &ia.ia_kbd.ka_ioh)) 263 1.2.2.2 thorpej panic("%s: Cannot map kbd registers\n", self->dv_xname); 264 1.2.2.2 thorpej ia.ia_kbd.ka_name = "kbd"; 265 1.2.2.2 thorpej ia.ia_kbd.ka_iot = iot; 266 1.2.2.2 thorpej ia.ia_kbd.ka_rxirq = IRQ_KBDRX; 267 1.2.2.2 thorpej ia.ia_kbd.ka_txirq = IRQ_KBDTX; 268 1.2.2.2 thorpej config_found(self, &ia, iomdprint); 269 1.2.2.2 thorpej 270 1.2.2.2 thorpej /* Attach rpckbc device when configured */ 271 1.2.2.2 thorpej ia.ia_kbd.ka_name = "rpckbd"; 272 1.2.2.2 thorpej ia.ia_kbd.ka_rxirq = IRQ_KBDRX; 273 1.2.2.2 thorpej ia.ia_kbd.ka_txirq = IRQ_KBDTX; 274 1.2.2.2 thorpej config_found(self, &ia, iomdprint); 275 1.2.2.2 thorpej 276 1.2.2.2 thorpej /* Attach iic device */ 277 1.2.2.2 thorpej 278 1.2.2.2 thorpej if (bus_space_subregion(iot, ioh, IOMD_IOCR, 4, &ia.ia_iic.ia_ioh)) 279 1.2.2.2 thorpej panic("%s: Cannot map iic registers\n", self->dv_xname); 280 1.2.2.2 thorpej ia.ia_iic.ia_name = "iic"; 281 1.2.2.2 thorpej ia.ia_iic.ia_iot = iot; 282 1.2.2.2 thorpej ia.ia_iic.ia_irq = -1; 283 1.2.2.2 thorpej config_found(self, &ia, iomdprint); 284 1.2.2.2 thorpej 285 1.2.2.2 thorpej switch (sc->sc_id) { 286 1.2.2.2 thorpej case ARM7500_IOC_ID: 287 1.2.2.2 thorpej case ARM7500FE_IOC_ID: 288 1.2.2.3 jdolecek /* Attach opms device */ 289 1.2.2.2 thorpej 290 1.2.2.3 jdolecek if (bus_space_subregion(iot, ioh, IOMD_MSDATA, 8, &ia.ia_opms.pa_ioh)) 291 1.2.2.3 jdolecek panic("%s: Cannot map opms registers\n", self->dv_xname); 292 1.2.2.3 jdolecek ia.ia_opms.pa_name = "opms"; 293 1.2.2.3 jdolecek ia.ia_opms.pa_iot = iot; 294 1.2.2.3 jdolecek ia.ia_opms.pa_irq = IRQ_MSDRX; 295 1.2.2.2 thorpej config_found(self, &ia, iomdprint); 296 1.2.2.2 thorpej break; 297 1.2.2.2 thorpej case RPC600_IOMD_ID: 298 1.2.2.2 thorpej /* Attach (ws)qms device */ 299 1.2.2.2 thorpej 300 1.2.2.2 thorpej if (bus_space_subregion(iot, ioh, IOMD_MOUSEX, 8, &ia.ia_qms.qa_ioh)) 301 1.2.2.2 thorpej panic("%s: Cannot map qms registers\n", self->dv_xname); 302 1.2.2.2 thorpej 303 1.2.2.2 thorpej if (bus_space_map(iot, IO_MOUSE_BUTTONS, 4, 0, &ia.ia_qms.qa_ioh_but)) 304 1.2.2.2 thorpej panic("%s: Cannot map registers\n", self->dv_xname); 305 1.2.2.2 thorpej ia.ia_qms.qa_name = "qms"; 306 1.2.2.2 thorpej ia.ia_qms.qa_iot = iot; 307 1.2.2.2 thorpej ia.ia_qms.qa_irq = IRQ_VSYNC; 308 1.2.2.2 thorpej config_found(self, &ia, iomdprint); 309 1.2.2.2 thorpej 310 1.2.2.2 thorpej ia.ia_qms.qa_name = "wsqms"; 311 1.2.2.2 thorpej config_found(self, &ia, iomdprint); 312 1.2.2.2 thorpej break; 313 1.2.2.2 thorpej } 314 1.2.2.2 thorpej } 315 1.2.2.2 thorpej 316 1.2.2.2 thorpej /* End of iomd.c */ 317
Indexes created Sun Oct 26 13:09:57 GMT 2025