Annotation of sys/arch/hp300/dev/dio.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: dio.c,v 1.12 2005/01/15 23:37:45 miod Exp $ */
! 2: /* $NetBSD: dio.c,v 1.7 1997/05/05 21:00:32 thorpej Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe.
! 10: *
! 11: * Redistribution and use in source and binary forms, with or without
! 12: * modification, are permitted provided that the following conditions
! 13: * are met:
! 14: * 1. Redistributions of source code must retain the above copyright
! 15: * notice, this list of conditions and the following disclaimer.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. All advertising materials mentioning features or use of this software
! 20: * must display the following acknowledgement:
! 21: * This product includes software developed by the NetBSD
! 22: * Foundation, Inc. and its contributors.
! 23: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 24: * contributors may be used to endorse or promote products derived
! 25: * from this software without specific prior written permission.
! 26: *
! 27: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 28: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 29: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 30: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
! 31: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 32: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 33: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 34: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 35: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 36: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 37: * POSSIBILITY OF SUCH DAMAGE.
! 38: */
! 39:
! 40: /*
! 41: * Autoconfiguration and mapping support for the DIO bus.
! 42: */
! 43:
! 44: #include <sys/param.h>
! 45: #include <sys/systm.h>
! 46: #include <sys/device.h>
! 47: #include <sys/kernel.h>
! 48: #include <sys/device.h>
! 49:
! 50: #include <machine/autoconf.h>
! 51: #include <machine/cpu.h>
! 52: #include <machine/hp300spu.h>
! 53:
! 54: #include <hp300/dev/dmavar.h>
! 55:
! 56: #include <hp300/dev/dioreg.h>
! 57: #include <hp300/dev/diovar.h>
! 58:
! 59: #include <hp300/dev/diodevs.h>
! 60: #include <hp300/dev/diodevs_data.h>
! 61:
! 62: extern caddr_t internalhpib;
! 63:
! 64: int dio_scodesize(struct dio_attach_args *);
! 65: char *dio_devinfo(struct dio_attach_args *, char *, size_t);
! 66:
! 67: int diomatch(struct device *, void *, void *);
! 68: void dioattach(struct device *, struct device *, void *);
! 69: int dioprint(void *, const char *);
! 70: int diosubmatch(struct device *, void *, void *);
! 71:
! 72: struct cfattach dio_ca = {
! 73: sizeof(struct device), diomatch, dioattach
! 74: };
! 75:
! 76: struct cfdriver dio_cd = {
! 77: NULL, "dio", DV_DULL
! 78: };
! 79:
! 80: int
! 81: diomatch(parent, match, aux)
! 82: struct device *parent;
! 83: void *match, *aux;
! 84: {
! 85: static int dio_matched = 0;
! 86:
! 87: /* Allow only one instance. */
! 88: if (dio_matched)
! 89: return (0);
! 90:
! 91: dio_matched = 1;
! 92: return (1);
! 93: }
! 94:
! 95: void
! 96: dioattach(parent, self, aux)
! 97: struct device *parent, *self;
! 98: void *aux;
! 99: {
! 100: struct dio_attach_args da;
! 101: caddr_t pa, va;
! 102: int scode, scmax, didmap, scodesize;
! 103:
! 104: scmax = DIO_SCMAX(machineid);
! 105: printf(": ");
! 106: dmainit();
! 107:
! 108: for (scode = 0; scode < scmax; ) {
! 109: if (DIO_INHOLE(scode)) {
! 110: scode++;
! 111: continue;
! 112: }
! 113:
! 114: didmap = 0;
! 115:
! 116: /*
! 117: * Temporarily map the space corresponding to
! 118: * the current select code unless:
! 119: * - this is the internal hpib select code,
! 120: * - this is the console select code.
! 121: */
! 122: pa = dio_scodetopa(scode);
! 123: if (scode == conscode)
! 124: va = conaddr;
! 125: else if ((scode == 7) && internalhpib)
! 126: va = internalhpib = (caddr_t)IIOV(pa);
! 127: else {
! 128: va = iomap(pa, NBPG);
! 129: if (va == NULL) {
! 130: printf("%s: can't map scode %d\n",
! 131: self->dv_xname, scode);
! 132: scode++;
! 133: continue;
! 134: }
! 135: didmap = 1;
! 136: }
! 137:
! 138: /* Check for hardware. */
! 139: if (badaddr(va)) {
! 140: if (didmap)
! 141: iounmap(va, NBPG);
! 142: scode++;
! 143: continue;
! 144: }
! 145:
! 146: /* Fill out attach args. */
! 147: bzero(&da, sizeof(da));
! 148: da.da_scode = scode;
! 149: if (scode == 7 && internalhpib)
! 150: da.da_id = DIO_DEVICE_ID_IHPIB;
! 151: else {
! 152: da.da_id = DIO_ID(va);
! 153: /*
! 154: * If we probe an unknown device, we do not necessarily
! 155: * know how many scodes it will span.
! 156: * Extra scodes will usually report an id of zero,
! 157: * which would match ihpib!
! 158: * Check for this, warn the user, and skip that scode.
! 159: */
! 160: if (da.da_id == 0) {
! 161: if (didmap)
! 162: iounmap(va, NBPG);
! 163: printf("%s: warning: select code %d is likely "
! 164: "a span of a previous unsupported device\n",
! 165: self->dv_xname, scode);
! 166: scode++;
! 167: continue;
! 168: }
! 169: }
! 170:
! 171: if (DIO_ISFRAMEBUFFER(da.da_id))
! 172: da.da_secid = DIO_SECID(va);
! 173:
! 174: da.da_size = DIO_SIZE(scode, va);
! 175: scodesize = dio_scodesize(&da);
! 176: if (DIO_ISDIO(scode))
! 177: da.da_size *= scodesize;
! 178:
! 179: /* No longer need the device to be mapped. */
! 180: if (didmap)
! 181: iounmap(va, NBPG);
! 182:
! 183: /* Attach matching device. */
! 184: config_found_sm(self, &da, dioprint, diosubmatch);
! 185: scode += scodesize;
! 186: }
! 187: }
! 188:
! 189: int
! 190: diosubmatch(parent, match, aux)
! 191: struct device *parent;
! 192: void *match, *aux;
! 193: {
! 194: struct cfdata *cf = match;
! 195: struct dio_attach_args *da = aux;
! 196:
! 197: if (cf->diocf_scode != DIO_UNKNOWN_SCODE &&
! 198: cf->diocf_scode != da->da_scode)
! 199: return (0);
! 200:
! 201: return ((*cf->cf_attach->ca_match)(parent, cf, aux));
! 202: }
! 203:
! 204: int
! 205: dioprint(aux, pnp)
! 206: void *aux;
! 207: const char *pnp;
! 208: {
! 209: struct dio_attach_args *da = aux;
! 210: char buf[128];
! 211:
! 212: if (pnp)
! 213: printf("%s at %s", dio_devinfo(da, buf, sizeof(buf)), pnp);
! 214: printf(" scode %d", da->da_scode);
! 215: return (UNCONF);
! 216: }
! 217:
! 218: /*
! 219: * Convert a select code to a system physical address.
! 220: */
! 221: void *
! 222: dio_scodetopa(scode)
! 223: int scode;
! 224: {
! 225: u_long rval;
! 226:
! 227: if (scode == 7 && internalhpib)
! 228: rval = DIO_IHPIBADDR;
! 229: else if (DIO_ISDIO(scode))
! 230: rval = DIO_BASE + (scode * DIO_DEVSIZE);
! 231: else if (DIO_ISDIOII(scode))
! 232: rval = DIOII_BASE + ((scode - DIOII_SCBASE) * DIOII_DEVSIZE);
! 233: else
! 234: rval = 0;
! 235:
! 236: return ((void *)rval);
! 237: }
! 238:
! 239: /*
! 240: * Return the select code size for this device, defaulting to 1
! 241: * if we don't know what kind of device we have.
! 242: */
! 243: int
! 244: dio_scodesize(da)
! 245: struct dio_attach_args *da;
! 246: {
! 247: int i;
! 248:
! 249: /*
! 250: * Deal with lame internal HP-IB controllers which don't have
! 251: * consistent/reliable device ids.
! 252: */
! 253: if (da->da_scode == 7 && internalhpib)
! 254: return (1);
! 255:
! 256: /*
! 257: * Find the dio_devdata matching the primary id.
! 258: * If we're a framebuffer, we also check the secondary id.
! 259: */
! 260: for (i = 0; i < DIO_NDEVICES; i++) {
! 261: if (da->da_id == dio_devdatas[i].dd_id) {
! 262: if (DIO_ISFRAMEBUFFER(da->da_id)) {
! 263: if (da->da_secid == dio_devdatas[i].dd_secid) {
! 264: goto foundit;
! 265: }
! 266: } else {
! 267: foundit:
! 268: return (dio_devdatas[i].dd_nscode);
! 269: }
! 270: }
! 271: }
! 272:
! 273: /*
! 274: * Device is unknown. Print a warning and assume a default.
! 275: */
! 276: printf("WARNING: select code size unknown for id = 0x%x secid = 0x%x\n",
! 277: da->da_id, da->da_secid);
! 278: return (1);
! 279: }
! 280:
! 281: /*
! 282: * Return a reasonable description of a DIO device.
! 283: */
! 284: char *
! 285: dio_devinfo(da, buf, buflen)
! 286: struct dio_attach_args *da;
! 287: char *buf;
! 288: size_t buflen;
! 289: {
! 290: #ifdef DIOVERBOSE
! 291: int i;
! 292: #endif
! 293:
! 294: bzero(buf, buflen);
! 295:
! 296: /*
! 297: * Deal with lame internal HP-IB controllers which don't have
! 298: * consistent/reliable device ids.
! 299: */
! 300: if (da->da_scode == 7 && internalhpib) {
! 301: snprintf(buf, buflen, DIO_DEVICE_DESC_IHPIB);
! 302: return (buf);
! 303: }
! 304:
! 305: #ifdef DIOVERBOSE
! 306: /*
! 307: * Find the description matching our primary id.
! 308: * If we're a framebuffer, we also check the secondary id.
! 309: */
! 310: for (i = 0; i < DIO_NDEVICES; i++) {
! 311: if (da->da_id == dio_devdescs[i].dd_id) {
! 312: if (DIO_ISFRAMEBUFFER(da->da_id)) {
! 313: if (da->da_secid == dio_devdescs[i].dd_secid) {
! 314: goto foundit;
! 315: }
! 316: } else {
! 317: foundit:
! 318: snprintf(buf, buflen, "%s",
! 319: dio_devdescs[i].dd_desc);
! 320: return (buf);
! 321: }
! 322: }
! 323: }
! 324: #endif /* DIOVERBOSE */
! 325:
! 326: /*
! 327: * Device is unknown. Construct something reasonable.
! 328: */
! 329: snprintf(buf, buflen, "device id = 0x%x secid = 0x%x",
! 330: da->da_id, da->da_secid);
! 331: return (buf);
! 332: }
! 333:
! 334: /*
! 335: * Establish an interrupt handler for a DIO device.
! 336: */
! 337: void
! 338: dio_intr_establish(struct isr *isr, const char *name)
! 339: {
! 340: intr_establish(isr, name);
! 341:
! 342: if (isr->isr_priority == IPL_BIO)
! 343: dmacomputeipl();
! 344: }
! 345:
! 346: /*
! 347: * Remove an interrupt handler for a DIO device.
! 348: */
! 349: void
! 350: dio_intr_disestablish(struct isr *isr)
! 351: {
! 352: intr_disestablish(isr);
! 353:
! 354: if (isr->isr_priority == IPL_BIO)
! 355: dmacomputeipl();
! 356: }
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to dio.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / arch / hp300 / dev