isa.c revision 18819
1185029Spjd/*- 2185029Spjd * Copyright (c) 1991 The Regents of the University of California. 3185029Spjd * All rights reserved. 4185029Spjd * 5185029Spjd * This code is derived from software contributed to Berkeley by 6185029Spjd * William Jolitz. 7185029Spjd * 8185029Spjd * Redistribution and use in source and binary forms, with or without 9185029Spjd * modification, are permitted provided that the following conditions 10185029Spjd * are met: 11185029Spjd * 1. Redistributions of source code must retain the above copyright 12185029Spjd * notice, this list of conditions and the following disclaimer. 13185029Spjd * 2. Redistributions in binary form must reproduce the above copyright 14185029Spjd * notice, this list of conditions and the following disclaimer in the 15185029Spjd * documentation and/or other materials provided with the distribution. 16185029Spjd * 3. All advertising materials mentioning features or use of this software 17185029Spjd * must display the following acknowledgement: 18185029Spjd * This product includes software developed by the University of 19329175Skevans * California, Berkeley and its contributors. 20329175Skevans * 4. Neither the name of the University nor the names of its contributors 21185029Spjd * may be used to endorse or promote products derived from this software 22185029Spjd * without specific prior written permission. 23185029Spjd * 24185096Sdfr * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25185096Sdfr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26185096Sdfr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27185029Spjd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28185029Spjd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29185029Spjd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30185029Spjd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31185029Spjd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32200309Sjhb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33185029Spjd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34185029Spjd * SUCH DAMAGE. 35185029Spjd * 36185029Spjd * from: @(#)isa.c 7.2 (Berkeley) 5/13/91 37185029Spjd * $Id: isa.c,v 1.73 1996/09/10 23:30:50 bde Exp $ 38185029Spjd */ 39185029Spjd 40185029Spjd/* 41185029Spjd * code to manage AT bus 42213136Spjd * 43213136Spjd * 92/08/18 Frank P. MacLachlan (fpm@crash.cts.com): 44329100Skevans * Fixed uninitialized variable problem and added code to deal 45213136Spjd * with DMA page boundaries in isa_dmarangecheck(). Fixed word 46235154Savg * mode DMA count compution and reorganized DMA setup code in 47294765Simp * isa_dmastart() 48185029Spjd */ 49235329Savg 50235329Savg#include "opt_auto_eoi.h" 51297629Sallanjude 52297629Sallanjude#include <sys/param.h> 53297629Sallanjude#include <sys/systm.h> 54185029Spjd#include <sys/buf.h> 55297629Sallanjude#include <sys/syslog.h> 56297629Sallanjude#include <sys/malloc.h> 57297629Sallanjude#include <machine/md_var.h> 58185029Spjd#include <machine/segments.h> 59297629Sallanjude#include <vm/vm.h> 60297629Sallanjude#include <vm/vm_param.h> 61297629Sallanjude#include <vm/pmap.h> 62297629Sallanjude#include <i386/isa/isa_device.h> 63185029Spjd#include <i386/isa/isa.h> 64297629Sallanjude#include <i386/isa/icu.h> 65297629Sallanjude#include <i386/isa/ic/i8237.h> 66185029Spjd#include "vector.h" 67185029Spjd 68185096Sdfr/* 69185096Sdfr** Register definitions for DMA controller 1 (channels 0..3): 70185096Sdfr*/ 71185029Spjd#define DMA1_CHN(c) (IO_DMA1 + 1*(2*(c))) /* addr reg for channel c */ 72185029Spjd#define DMA1_SMSK (IO_DMA1 + 1*10) /* single mask register */ 73185029Spjd#define DMA1_MODE (IO_DMA1 + 1*11) /* mode register */ 74185029Spjd#define DMA1_FFC (IO_DMA1 + 1*12) /* clear first/last FF */ 75185029Spjd 76185029Spjd/* 77185029Spjd** Register definitions for DMA controller 2 (channels 4..7): 78185029Spjd*/ 79185029Spjd#define DMA2_CHN(c) (IO_DMA2 + 2*(2*(c))) /* addr reg for channel c */ 80185029Spjd#define DMA2_SMSK (IO_DMA2 + 2*10) /* single mask register */ 81185029Spjd#define DMA2_MODE (IO_DMA2 + 2*11) /* mode register */ 82185029Spjd#define DMA2_FFC (IO_DMA2 + 2*12) /* clear first/last FF */ 83185029Spjd 84185029Spjdu_long *intr_countp[ICU_LEN]; 85185029Spjdinthand2_t *intr_handler[ICU_LEN]; 86185029Spjdu_int intr_mask[ICU_LEN]; 87185029Spjdu_int* intr_mptr[ICU_LEN]; 88213136Spjdint intr_unit[ICU_LEN]; 89185029Spjd 90185029Spjdstatic inthand_t *fastintr[ICU_LEN] = { 91185029Spjd &IDTVEC(fastintr0), &IDTVEC(fastintr1), 92185029Spjd &IDTVEC(fastintr2), &IDTVEC(fastintr3), 93234339Savg &IDTVEC(fastintr4), &IDTVEC(fastintr5), 94185029Spjd &IDTVEC(fastintr6), &IDTVEC(fastintr7), 95235329Savg &IDTVEC(fastintr8), &IDTVEC(fastintr9), 96185029Spjd &IDTVEC(fastintr10), &IDTVEC(fastintr11), 97185029Spjd &IDTVEC(fastintr12), &IDTVEC(fastintr13), 98185029Spjd &IDTVEC(fastintr14), &IDTVEC(fastintr15) 99235329Savg}; 100185029Spjd 101200309Sjhbstatic inthand_t *slowintr[ICU_LEN] = { 102200309Sjhb &IDTVEC(intr0), &IDTVEC(intr1), &IDTVEC(intr2), &IDTVEC(intr3), 103200309Sjhb &IDTVEC(intr4), &IDTVEC(intr5), &IDTVEC(intr6), &IDTVEC(intr7), 104200309Sjhb &IDTVEC(intr8), &IDTVEC(intr9), &IDTVEC(intr10), &IDTVEC(intr11), 105200309Sjhb &IDTVEC(intr12), &IDTVEC(intr13), &IDTVEC(intr14), &IDTVEC(intr15) 106200309Sjhb}; 107200309Sjhb 108200309Sjhbstatic void config_isadev __P((struct isa_device *isdp, u_int *mp)); 109328866Skevansstatic void config_isadev_c __P((struct isa_device *isdp, u_int *mp, 110200309Sjhb int reconfig)); 111200309Sjhbstatic void conflict __P((struct isa_device *dvp, struct isa_device *tmpdvp, 112200309Sjhb int item, char const *whatnot, char const *reason, 113200309Sjhb char const *format)); 114185029Spjdstatic int haveseen __P((struct isa_device *dvp, struct isa_device *tmpdvp, 115297629Sallanjude u_int checkbits)); 116185029Spjdstatic int isa_dmarangecheck __P((caddr_t va, u_int length, int chan)); 117185029Spjdstatic inthand2_t isa_strayintr; 118185029Spjdstatic void register_imask __P((struct isa_device *dvp, u_int mask)); 119185029Spjd 120185029Spjd/* 121185029Spjd * print a conflict message 122185029Spjd */ 123308914Savgstatic void 124185029Spjdconflict(dvp, tmpdvp, item, whatnot, reason, format) 125329099Skevans struct isa_device *dvp; 126200309Sjhb struct isa_device *tmpdvp; 127329100Skevans int item; 128185029Spjd char const *whatnot; 129296963Sallanjude char const *reason; 130344399Skevans char const *format; 131296963Sallanjude{ 132296963Sallanjude printf("%s%d not %sed due to %s conflict with %s%d at ", 133296963Sallanjude dvp->id_driver->name, dvp->id_unit, whatnot, reason, 134344399Skevans tmpdvp->id_driver->name, tmpdvp->id_unit); 135344399Skevans printf(format, item); 136344399Skevans printf("\n"); 137344399Skevans} 138344399Skevans 139344399Skevans/* 140344399Skevans * Check to see if things are already in use, like IRQ's, I/O addresses 141185029Spjd * and Memory addresses. 142185029Spjd */ 143185029Spjdstatic int 144185029Spjdhaveseen(dvp, tmpdvp, checkbits) 145185029Spjd struct isa_device *dvp; 146185029Spjd struct isa_device *tmpdvp; 147185029Spjd u_int checkbits; 148185029Spjd{ 149185029Spjd /* 150185029Spjd * Only check against devices that have already been found and are not 151185029Spjd * unilaterally allowed to conflict anyway. 152185029Spjd */ 153185029Spjd if (tmpdvp->id_alive && !dvp->id_conflicts) { 154185029Spjd char const *whatnot; 155185029Spjd 156308914Savg whatnot = checkbits & CC_ATTACH ? "attach" : "prob"; 157185029Spjd /* 158185029Spjd * Check for I/O address conflict. We can only check the 159185029Spjd * starting address of the device against the range of the 160185029Spjd * device that has already been probed since we do not 161185029Spjd * know how many I/O addresses this device uses. 162185029Spjd */ 163185029Spjd if (checkbits & CC_IOADDR && tmpdvp->id_alive != -1) { 164185029Spjd if ((dvp->id_iobase >= tmpdvp->id_iobase) && 165185029Spjd (dvp->id_iobase <= 166185029Spjd (tmpdvp->id_iobase + tmpdvp->id_alive - 1))) { 167185029Spjd conflict(dvp, tmpdvp, dvp->id_iobase, whatnot, 168235329Savg "I/O address", "0x%x"); 169241293Savg return 1; 170241293Savg } 171185029Spjd } 172185029Spjd /* 173185029Spjd * Check for Memory address conflict. We can check for 174185029Spjd * range overlap, but it will not catch all cases since the 175185029Spjd * driver may adjust the msize paramater during probe, for 176185029Spjd * now we just check that the starting address does not 177329175Skevans * fall within any allocated region. 178185029Spjd * XXX could add a second check after the probe for overlap, 179185029Spjd * since at that time we would know the full range. 180297629Sallanjude * XXX KERNBASE is a hack, we should have vaddr in the table! 181300257Sallanjude */ 182297629Sallanjude if (checkbits & CC_MEMADDR && tmpdvp->id_maddr) { 183344399Skevans if ((KERNBASE + dvp->id_maddr >= tmpdvp->id_maddr) && 184185029Spjd (KERNBASE + dvp->id_maddr <= 185185029Spjd (tmpdvp->id_maddr + tmpdvp->id_msize - 1))) { 186185029Spjd conflict(dvp, tmpdvp, (int)dvp->id_maddr, 187185029Spjd whatnot, "maddr", "0x%x"); 188185029Spjd return 1; 189185029Spjd } 190344399Skevans } 191297629Sallanjude /* 192300257Sallanjude * Check for IRQ conflicts. 193300257Sallanjude */ 194300257Sallanjude if (checkbits & CC_IRQ && tmpdvp->id_irq) { 195300257Sallanjude if (tmpdvp->id_irq == dvp->id_irq) { 196300257Sallanjude conflict(dvp, tmpdvp, ffs(dvp->id_irq) - 1, 197297629Sallanjude whatnot, "irq", "%d"); 198297629Sallanjude return 1; 199297629Sallanjude } 200344399Skevans } 201297629Sallanjude /* 202297629Sallanjude * Check for DRQ conflicts. 203185029Spjd */ 204185029Spjd if (checkbits & CC_DRQ && tmpdvp->id_drq != -1) { 205297629Sallanjude if (tmpdvp->id_drq == dvp->id_drq) { 206297629Sallanjude conflict(dvp, tmpdvp, dvp->id_drq, whatnot, 207297629Sallanjude "drq", "%d"); 208297629Sallanjude return 1; 209298949Speter } 210298949Speter } 211297629Sallanjude } 212297629Sallanjude return 0; 213297629Sallanjude} 214297629Sallanjude 215298949Speter/* 216298949Speter * Search through all the isa_devtab_* tables looking for anything that 217297629Sallanjude * conflicts with the current device. 218344399Skevans */ 219344399Skevansint 220344399Skevanshaveseen_isadev(dvp, checkbits) 221344399Skevans struct isa_device *dvp; 222344399Skevans u_int checkbits; 223344399Skevans{ 224344295Skevans struct isa_device *tmpdvp; 225344295Skevans int status = 0; 226344399Skevans 227185029Spjd for (tmpdvp = isa_devtab_tty; tmpdvp->id_driver; tmpdvp++) { 228296963Sallanjude status |= haveseen(dvp, tmpdvp, checkbits); 229296963Sallanjude if (status) 230344399Skevans return status; 231344399Skevans } 232297629Sallanjude for (tmpdvp = isa_devtab_bio; tmpdvp->id_driver; tmpdvp++) { 233297629Sallanjude status |= haveseen(dvp, tmpdvp, checkbits); 234296963Sallanjude if (status) 235296963Sallanjude return status; 236297629Sallanjude } 237185029Spjd for (tmpdvp = isa_devtab_net; tmpdvp->id_driver; tmpdvp++) { 238185029Spjd status |= haveseen(dvp, tmpdvp, checkbits); 239297629Sallanjude if (status) 240185029Spjd return status; 241297629Sallanjude } 242297629Sallanjude for (tmpdvp = isa_devtab_null; tmpdvp->id_driver; tmpdvp++) { 243185029Spjd status |= haveseen(dvp, tmpdvp, checkbits); 244185029Spjd if (status) 245185029Spjd return status; 246185029Spjd } 247329175Skevans return(status); 248329175Skevans} 249329175Skevans 250329175Skevans/* 251329175Skevans * Configure all ISA devices 252329175Skevans */ 253185029Spjdvoid 254329175Skevansisa_configure() { 255185029Spjd struct isa_device *dvp; 256308914Savg 257308914Savg splhigh(); 258308914Savg printf("Probing for devices on the ISA bus:\n"); 259308914Savg /* First probe all the sensitive probes */ 260308914Savg for (dvp = isa_devtab_tty; dvp->id_driver; dvp++) 261344399Skevans if (dvp->id_driver->sensitive_hw) 262308914Savg config_isadev(dvp, &tty_imask); 263308914Savg for (dvp = isa_devtab_bio; dvp->id_driver; dvp++) 264308914Savg if (dvp->id_driver->sensitive_hw) 265308914Savg config_isadev(dvp, &bio_imask); 266308914Savg for (dvp = isa_devtab_net; dvp->id_driver; dvp++) 267308914Savg if (dvp->id_driver->sensitive_hw) 268344399Skevans config_isadev(dvp, &net_imask); 269308914Savg for (dvp = isa_devtab_null; dvp->id_driver; dvp++) 270308914Savg if (dvp->id_driver->sensitive_hw) 271308914Savg config_isadev(dvp, (u_int *)NULL); 272308914Savg 273308914Savg /* Then all the bad ones */ 274344399Skevans for (dvp = isa_devtab_tty; dvp->id_driver; dvp++) 275308914Savg if (!dvp->id_driver->sensitive_hw) 276308914Savg config_isadev(dvp, &tty_imask); 277308914Savg for (dvp = isa_devtab_bio; dvp->id_driver; dvp++) 278308914Savg if (!dvp->id_driver->sensitive_hw) 279308914Savg config_isadev(dvp, &bio_imask); 280308914Savg for (dvp = isa_devtab_net; dvp->id_driver; dvp++) 281308914Savg if (!dvp->id_driver->sensitive_hw) 282308914Savg config_isadev(dvp, &net_imask); 283308914Savg for (dvp = isa_devtab_null; dvp->id_driver; dvp++) 284308914Savg if (!dvp->id_driver->sensitive_hw) 285185029Spjd config_isadev(dvp, (u_int *)NULL); 286185029Spjd 287185029Spjd bio_imask |= SWI_CLOCK_MASK; 288235329Savg net_imask |= SWI_NET_MASK; 289185029Spjd tty_imask |= SWI_TTY_MASK; 290185029Spjd 291185029Spjd/* 292185029Spjd * XXX we should really add the tty device to net_imask when the line is 293185029Spjd * switched to SLIPDISC, and then remove it when it is switched away from 294308914Savg * SLIPDISC. No need to block out ALL ttys during a splimp when only one 295308914Savg * of them is running slip. 296308914Savg * 297308914Savg * XXX actually, blocking all ttys during a splimp doesn't matter so much 298308914Savg * with sio because the serial interrupt layer doesn't use tty_imask. Only 299308914Savg * non-serial ttys suffer. It's more stupid that ALL 'net's are blocked 300308914Savg * during spltty. 301308914Savg */ 302308914Savg#include "sl.h" 303308914Savg#if NSL > 0 304308914Savg net_imask |= tty_imask; 305308914Savg tty_imask = net_imask; 306308914Savg#endif 307308914Savg 308308914Savg /* bio_imask |= tty_imask ; can some tty devices use buffers? */ 309308914Savg 310308914Savg if (bootverbose) 311308914Savg printf("imasks: bio %x, tty %x, net %x\n", 312308914Savg bio_imask, tty_imask, net_imask); 313308914Savg 314308914Savg /* 315308914Savg * Finish initializing intr_mask[]. Note that the partly 316308914Savg * constructed masks aren't actually used since we're at splhigh. 317308914Savg * For fully dynamic initialization, register_intr() and 318308914Savg * unregister_intr() will have to adjust the masks for _all_ 319308914Savg * interrupts and for tty_imask, etc. 320308914Savg */ 321308914Savg for (dvp = isa_devtab_tty; dvp->id_driver; dvp++) 322308914Savg register_imask(dvp, tty_imask); 323308914Savg for (dvp = isa_devtab_bio; dvp->id_driver; dvp++) 324308914Savg register_imask(dvp, bio_imask); 325308914Savg for (dvp = isa_devtab_net; dvp->id_driver; dvp++) 326308914Savg register_imask(dvp, net_imask); 327308914Savg for (dvp = isa_devtab_null; dvp->id_driver; dvp++) 328308914Savg register_imask(dvp, SWI_CLOCK_MASK); 329308914Savg spl0(); 330308914Savg} 331308914Savg 332308914Savg/* 333308914Savg * Configure an ISA device. 334308914Savg */ 335308914Savg 336308914Savg 337308914Savgstatic void 338308914Savgconfig_isadev(isdp, mp) 339308914Savg struct isa_device *isdp; 340200309Sjhb u_int *mp; 341200309Sjhb{ 342185029Spjd config_isadev_c(isdp, mp, 0); 343200309Sjhb} 344185029Spjd 345200309Sjhbvoid 346200309Sjhbreconfig_isadev(isdp, mp) 347200309Sjhb struct isa_device *isdp; 348200309Sjhb u_int *mp; 349200309Sjhb{ 350200309Sjhb config_isadev_c(isdp, mp, 1); 351200309Sjhb} 352200309Sjhb 353200309Sjhbstatic void 354200309Sjhbconfig_isadev_c(isdp, mp, reconfig) 355200309Sjhb struct isa_device *isdp; 356292682Sjhb u_int *mp; 357200309Sjhb int reconfig; 358200309Sjhb{ 359200309Sjhb u_int checkbits; 360200309Sjhb int id_alive; 361200309Sjhb int last_alive; 362200309Sjhb struct isa_driver *dp = isdp->id_driver; 363200309Sjhb 364200309Sjhb if (!isdp->id_enabled) { 365200309Sjhb printf("%s%d: disabled, not probed.\n", 366200309Sjhb dp->name, isdp->id_unit); 367200309Sjhb return; 368200309Sjhb } 369200309Sjhb checkbits = CC_DRQ | CC_IOADDR | CC_MEMADDR; 370200309Sjhb if (!reconfig && haveseen_isadev(isdp, checkbits)) 371200309Sjhb return; 372200309Sjhb if (!reconfig && isdp->id_maddr) { 373200309Sjhb isdp->id_maddr -= 0xa0000; /* XXX should be a define */ 374200309Sjhb isdp->id_maddr += atdevbase; 375200309Sjhb } 376200309Sjhb if (reconfig) { 377200309Sjhb last_alive = isdp->id_alive; 378200309Sjhb isdp->id_reconfig = 1; 379200309Sjhb } 380200309Sjhb else { 381200309Sjhb last_alive = 0; 382200309Sjhb isdp->id_reconfig = 0; 383200309Sjhb } 384200309Sjhb id_alive = (*dp->probe)(isdp); 385200309Sjhb if (id_alive) { 386200309Sjhb /* 387200309Sjhb * Only print the I/O address range if id_alive != -1 388200309Sjhb * Right now this is a temporary fix just for the new 389200309Sjhb * NPX code so that if it finds a 486 that can use trap 390200309Sjhb * 16 it will not report I/O addresses. 391200309Sjhb * Rod Grimes 04/26/94 392200309Sjhb */ 393200309Sjhb if (!isdp->id_reconfig) { 394200309Sjhb printf("%s%d", dp->name, isdp->id_unit); 395200309Sjhb if (id_alive != -1) { 396200309Sjhb printf(" at 0x%x", isdp->id_iobase); 397200309Sjhb if (isdp->id_iobase + id_alive - 1 != 398200309Sjhb isdp->id_iobase) { 399200309Sjhb printf("-0x%x", 400200309Sjhb isdp->id_iobase + id_alive - 1); 401200309Sjhb } 402200309Sjhb } 403292682Sjhb if (isdp->id_irq) 404200309Sjhb printf(" irq %d", ffs(isdp->id_irq) - 1); 405200309Sjhb if (isdp->id_drq != -1) 406200309Sjhb printf(" drq %d", isdp->id_drq); 407200309Sjhb if (isdp->id_maddr) 408200309Sjhb printf(" maddr 0x%lx", kvtop(isdp->id_maddr)); 409200309Sjhb if (isdp->id_msize) 410200309Sjhb printf(" msize %d", isdp->id_msize); 411200309Sjhb if (isdp->id_flags) 412200309Sjhb printf(" flags 0x%x", isdp->id_flags); 413200309Sjhb if (isdp->id_iobase && !(isdp->id_iobase & 0xf300)) { 414200309Sjhb printf(" on motherboard"); 415200309Sjhb } else if (isdp->id_iobase >= 0x1000 && 416200309Sjhb !(isdp->id_iobase & 0x300)) { 417200309Sjhb printf (" on eisa slot %d", 418200309Sjhb isdp->id_iobase >> 12); 419200309Sjhb } else { 420200309Sjhb printf (" on isa"); 421200309Sjhb } 422200309Sjhb printf("\n"); 423200309Sjhb /* 424296963Sallanjude * Check for conflicts again. The driver may have 425200309Sjhb * changed *dvp. We should weaken the early check 426185029Spjd * since the driver may have been able to change 427185029Spjd * *dvp to avoid conflicts if given a chance. We 428185029Spjd * already skip the early check for IRQs and force 429185029Spjd * a check for IRQs in the next group of checks. 430185029Spjd */ 431185029Spjd checkbits |= CC_IRQ; 432185029Spjd if (haveseen_isadev(isdp, checkbits)) 433185029Spjd return; 434185029Spjd isdp->id_alive = id_alive; 435185029Spjd } 436185029Spjd (*dp->attach)(isdp); 437185029Spjd if (isdp->id_irq) { 438292682Sjhb if (mp) 439185029Spjd INTRMASK(*mp, isdp->id_irq); 440185029Spjd register_intr(ffs(isdp->id_irq) - 1, isdp->id_id, 441185029Spjd isdp->id_ri_flags, isdp->id_intr, 442185029Spjd mp, isdp->id_unit); 443185029Spjd INTREN(isdp->id_irq); 444185029Spjd } 445185029Spjd } else { 446185029Spjd if (isdp->id_reconfig) { 447185029Spjd (*dp->attach)(isdp); /* reconfiguration attach */ 448192194Sdfr } 449192194Sdfr if (!last_alive) { 450192194Sdfr if (!isdp->id_reconfig) { 451192194Sdfr printf("%s%d not found", 452344399Skevans dp->name, isdp->id_unit); 453344399Skevans if (isdp->id_iobase) { 454192194Sdfr printf(" at 0x%x", isdp->id_iobase); 455344399Skevans } 456192194Sdfr printf("\n"); 457344399Skevans } 458344399Skevans } 459192194Sdfr else { 460192194Sdfr /* This code has not been tested.... */ 461192194Sdfr if (isdp->id_irq) { 462329100Skevans INTRDIS(isdp->id_irq); 463329100Skevans unregister_intr(ffs(isdp->id_irq) - 1, 464329100Skevans isdp->id_intr); 465329100Skevans if (mp) 466329100Skevans INTRUNMASK(*mp, isdp->id_irq); 467329100Skevans } 468329100Skevans } 469329100Skevans } 470344399Skevans} 471329100Skevans 472344399Skevans/* 473329100Skevans * Fill in default interrupt table (in case of spuruious interrupt 474329100Skevans * during configuration of kernel, setup interrupt control unit 475329100Skevans */ 476344399Skevansvoid 477344399Skevansisa_defaultirq() 478329100Skevans{ 479329100Skevans int i; 480329100Skevans 481329100Skevans /* icu vectors */ 482329100Skevans for (i = 0; i < ICU_LEN; i++) 483329100Skevans unregister_intr(i, (inthand2_t *)NULL); 484329100Skevans 485329100Skevans /* initialize 8259's */ 486329100Skevans outb(IO_ICU1, 0x11); /* reset; program device, four bytes */ 487329100Skevans outb(IO_ICU1+1, NRSVIDT); /* starting at this vector index */ 488329100Skevans outb(IO_ICU1+1, 1<<2); /* slave on line 2 */ 489329100Skevans#ifdef AUTO_EOI_1 490329100Skevans outb(IO_ICU1+1, 2 | 1); /* auto EOI, 8086 mode */ 491329100Skevans#else 492329100Skevans outb(IO_ICU1+1, 1); /* 8086 mode */ 493329100Skevans#endif 494329100Skevans outb(IO_ICU1+1, 0xff); /* leave interrupts masked */ 495329100Skevans outb(IO_ICU1, 0x0a); /* default to IRR on read */ 496329100Skevans outb(IO_ICU1, 0xc0 | (3 - 1)); /* pri order 3-7, 0-2 (com2 first) */ 497329100Skevans 498329100Skevans outb(IO_ICU2, 0x11); /* reset; program device, four bytes */ 499329100Skevans outb(IO_ICU2+1, NRSVIDT+8); /* staring at this vector index */ 500329100Skevans outb(IO_ICU2+1,2); /* my slave id is 2 */ 501329100Skevans#ifdef AUTO_EOI_2 502329100Skevans outb(IO_ICU2+1, 2 | 1); /* auto EOI, 8086 mode */ 503329100Skevans#else 504329100Skevans outb(IO_ICU2+1,1); /* 8086 mode */ 505329100Skevans#endif 506329100Skevans outb(IO_ICU2+1, 0xff); /* leave interrupts masked */ 507329100Skevans outb(IO_ICU2, 0x0a); /* default to IRR on read */ 508329100Skevans} 509329100Skevans 510329100Skevansstatic caddr_t dma_bouncebuf[8]; 511329100Skevansstatic u_int dma_bouncebufsize[8]; 512329100Skevansstatic u_int8_t dma_bounced = 0; 513329100Skevansstatic u_int8_t dma_busy = 0; /* Used in isa_dmastart() */ 514329100Skevansstatic u_int8_t dma_inuse = 0; /* User for acquire/release */ 515329100Skevans 516329100Skevans#define VALID_DMA_MASK (7) 517329100Skevans 518329100Skevans/* high byte of address is stored in this port for i-th dma channel */ 519329100Skevansstatic int dmapageport[8] = { 0x87, 0x83, 0x81, 0x82, 0x8f, 0x8b, 0x89, 0x8a }; 520329100Skevans 521329100Skevans/* 522344399Skevans * Setup a DMA channel's bounce buffer. 523344399Skevans */ 524329100Skevansvoid 525344399Skevansisa_dmainit(chan, bouncebufsize) 526344399Skevans int chan; 527329100Skevans u_int bouncebufsize; 528329100Skevans{ 529329100Skevans void *buf; 530329100Skevans 531185029Spjd#ifdef DIAGNOSTIC 532344399Skevans if (chan & ~VALID_DMA_MASK) 533185029Spjd panic("isa_dmainit: channel out of range"); 534185096Sdfr 535185096Sdfr if (dma_bouncebuf[chan] != NULL) 536185096Sdfr panic("isa_dmainit: impossible request"); 537185096Sdfr#endif 538299997Speter 539185096Sdfr dma_bouncebufsize[chan] = bouncebufsize; 540299997Speter 541299997Speter /* Try malloc() first. It works better if it works. */ 542299660Sngie buf = malloc(bouncebufsize, M_DEVBUF, M_NOWAIT); 543299997Speter if (buf != NULL) { 544185029Spjd if (isa_dmarangecheck(buf, bouncebufsize, chan) == 0) { 545185029Spjd dma_bouncebuf[chan] = buf; 546185029Spjd return; 547185029Spjd } 548185029Spjd free(buf, M_DEVBUF); 549296963Sallanjude } 550185029Spjd buf = contigmalloc(bouncebufsize, M_DEVBUF, M_NOWAIT, 0ul, 0xfffffful, 551344399Skevans 1ul, chan & 4 ? 0x20000ul : 0x10000ul); 552185029Spjd if (buf == NULL) 553185029Spjd printf("isa_dmainit(%d, %d) failed\n", chan, bouncebufsize); 554296963Sallanjude else 555296963Sallanjude dma_bouncebuf[chan] = buf; 556296963Sallanjude} 557296963Sallanjude 558296963Sallanjude/* 559296963Sallanjude * Register a DMA channel's usage. Usually called from a device driver 560296963Sallanjude * in open() or during it's initialization. 561344399Skevans */ 562296963Sallanjudeint 563296963Sallanjudeisa_dma_acquire(chan) 564296963Sallanjude int chan; 565344399Skevans{ 566344399Skevans#ifdef DIAGNOSTIC 567344399Skevans if (chan & ~VALID_DMA_MASK) 568344399Skevans panic("isa_dma_acquire: channel out of range"); 569344399Skevans#endif 570296963Sallanjude 571296963Sallanjude if (dma_inuse & (1 << chan)) { 572296963Sallanjude printf("isa_dma_acquire: channel %d already in use\n", chan); 573296963Sallanjude return (EBUSY); 574296963Sallanjude } 575296963Sallanjude dma_inuse |= (1 << chan); 576185029Spjd 577344399Skevans return (0); 578185096Sdfr} 579185096Sdfr 580185096Sdfr/* 581185096Sdfr * Unregister a DMA channel's usage. Usually called from a device driver 582185096Sdfr * during close() or during it's shutdown. 583344399Skevans */ 584185096Sdfrvoid 585185096Sdfrisa_dma_release(chan) 586185096Sdfr int chan; 587185096Sdfr{ 588185096Sdfr#ifdef DIAGNOSTIC 589185096Sdfr if (chan & ~VALID_DMA_MASK) 590185096Sdfr panic("isa_dma_release: channel out of range"); 591185096Sdfr 592185096Sdfr if (dma_inuse & (1 << chan) == 0) 593185096Sdfr printf("isa_dma_release: channel %d not in use\n", chan); 594298826Spfg#endif 595185096Sdfr 596185096Sdfr if (dma_busy & (1 << chan)) { 597185096Sdfr dma_busy &= ~(1 << chan); 598296963Sallanjude /* 599296963Sallanjude * XXX We should also do "dma_bounced &= (1 << chan);" 600185096Sdfr * because we are acting on behalf of isa_dmadone() which 601185096Sdfr * was not called to end the last DMA operation. This does 602185096Sdfr * not matter now, but it may in the future. 603185096Sdfr */ 604185096Sdfr } 605344399Skevans 606344399Skevans dma_inuse &= ~(1 << chan); 607185096Sdfr} 608185096Sdfr 609185096Sdfr/* 610185096Sdfr * isa_dmacascade(): program 8237 DMA controller channel to accept 611185096Sdfr * external dma control by a board. 612344399Skevans */ 613344399Skevansvoid isa_dmacascade(chan) 614344399Skevans int chan; 615344399Skevans{ 616344399Skevans#ifdef DIAGNOSTIC 617185096Sdfr if (chan & ~VALID_DMA_MASK) 618185096Sdfr panic("isa_dmacascade: channel out of range"); 619185096Sdfr#endif 620185096Sdfr 621344399Skevans /* set dma channel mode, and set dma channel mode */ 622185096Sdfr if ((chan & 4) == 0) { 623296963Sallanjude outb(DMA1_MODE, DMA37MD_CASCADE | chan); 624344399Skevans outb(DMA1_SMSK, chan); 625344399Skevans } else { 626344399Skevans outb(DMA2_MODE, DMA37MD_CASCADE | (chan & 3)); 627344399Skevans outb(DMA2_SMSK, chan & 3); 628344399Skevans } 629296963Sallanjude} 630296963Sallanjude 631296963Sallanjude/* 632344399Skevans * isa_dmastart(): program 8237 DMA controller channel, avoid page alignment 633296963Sallanjude * problems by using a bounce buffer. 634296963Sallanjude */ 635296963Sallanjudevoid isa_dmastart(int flags, caddr_t addr, u_int nbytes, int chan) 636296963Sallanjude{ 637344399Skevans vm_offset_t phys; 638296963Sallanjude int waport; 639296963Sallanjude caddr_t newaddr; 640296963Sallanjude 641296963Sallanjude#ifdef DIAGNOSTIC 642296963Sallanjude if (chan & ~VALID_DMA_MASK) 643185096Sdfr panic("isa_dmastart: channel out of range"); 644185096Sdfr 645185096Sdfr if ((chan < 4 && nbytes > (1<<16)) 646185096Sdfr || (chan >= 4 && (nbytes > (1<<17) || (u_int)addr & 1))) 647185096Sdfr panic("isa_dmastart: impossible request"); 648185096Sdfr 649296963Sallanjude if (dma_inuse & (1 << chan) == 0) 650185096Sdfr printf("isa_dmastart: channel %d not acquired\n", chan); 651344399Skevans#endif 652185029Spjd 653185029Spjd if (dma_busy & (1 << chan)) 654185029Spjd printf("isa_dmastart: channel %d busy\n", chan); 655185029Spjd 656185029Spjd dma_busy |= (1 << chan); 657185029Spjd 658344399Skevans if (isa_dmarangecheck(addr, nbytes, chan)) { 659344399Skevans if (dma_bouncebuf[chan] == NULL 660344399Skevans || dma_bouncebufsize[chan] < nbytes) 661344399Skevans panic("isa_dmastart: bad bounce buffer"); 662344399Skevans dma_bounced |= (1 << chan); 663185029Spjd newaddr = dma_bouncebuf[chan]; 664296963Sallanjude 665344399Skevans /* copy bounce buffer on write */ 666344399Skevans if (!(flags & B_READ)) 667344399Skevans bcopy(addr, newaddr, nbytes); 668344399Skevans addr = newaddr; 669296963Sallanjude } 670296963Sallanjude 671296963Sallanjude /* translate to physical */ 672344399Skevans phys = pmap_extract(pmap_kernel(), (vm_offset_t)addr); 673296963Sallanjude 674296963Sallanjude if ((chan & 4) == 0) { 675296963Sallanjude /* 676296963Sallanjude * Program one of DMA channels 0..3. These are 677344399Skevans * byte mode channels. 678296963Sallanjude */ 679296963Sallanjude /* set dma channel mode, and reset address ff */ 680296963Sallanjude 681296963Sallanjude /* If B_RAW flag is set, then use autoinitialise mode */ 682296963Sallanjude if (flags & B_RAW) { 683185029Spjd if (flags & B_READ) 684185029Spjd outb(DMA1_MODE, DMA37MD_AUTO|DMA37MD_WRITE|chan); 685185029Spjd else 686185029Spjd outb(DMA1_MODE, DMA37MD_AUTO|DMA37MD_READ|chan); 687185029Spjd } 688185029Spjd else 689185029Spjd if (flags & B_READ) 690185029Spjd outb(DMA1_MODE, DMA37MD_SINGLE|DMA37MD_WRITE|chan); 691344399Skevans else 692308914Savg outb(DMA1_MODE, DMA37MD_SINGLE|DMA37MD_READ|chan); 693308914Savg outb(DMA1_FFC, 0); 694308914Savg 695185029Spjd /* send start address */ 696208388Sjhb waport = DMA1_CHN(chan); 697208388Sjhb outb(waport, phys); 698200309Sjhb outb(waport, phys>>8); 699200309Sjhb outb(dmapageport[chan], phys>>16); 700200309Sjhb 701200309Sjhb /* send count */ 702200309Sjhb outb(waport + 1, --nbytes); 703200309Sjhb outb(waport + 1, nbytes>>8); 704296963Sallanjude 705296963Sallanjude /* unmask channel */ 706200309Sjhb outb(DMA1_SMSK, chan); 707329175Skevans } else { 708200309Sjhb /* 709344399Skevans * Program one of DMA channels 4..7. These are 710344399Skevans * word mode channels. 711344399Skevans */ 712344399Skevans /* set dma channel mode, and reset address ff */ 713344399Skevans 714344399Skevans /* If B_RAW flag is set, then use autoinitialise mode */ 715344399Skevans if (flags & B_RAW) { 716344399Skevans if (flags & B_READ) 717185029Spjd outb(DMA2_MODE, DMA37MD_AUTO|DMA37MD_WRITE|(chan&3)); 718185029Spjd else 719185029Spjd outb(DMA2_MODE, DMA37MD_AUTO|DMA37MD_READ|(chan&3)); 720200309Sjhb } 721200309Sjhb else 722185029Spjd if (flags & B_READ) 723344399Skevans outb(DMA2_MODE, DMA37MD_SINGLE|DMA37MD_WRITE|(chan&3)); 724185029Spjd else 725344399Skevans outb(DMA2_MODE, DMA37MD_SINGLE|DMA37MD_READ|(chan&3)); 726344399Skevans outb(DMA2_FFC, 0); 727185029Spjd 728185029Spjd /* send start address */ 729185029Spjd waport = DMA2_CHN(chan - 4); 730185029Spjd outb(waport, phys>>1); 731185029Spjd outb(waport, phys>>9); 732185029Spjd outb(dmapageport[chan], phys>>16); 733185029Spjd 734185029Spjd /* send count */ 735185029Spjd nbytes >>= 1; 736185029Spjd outb(waport + 2, --nbytes); 737185029Spjd outb(waport + 2, nbytes>>8); 738344399Skevans 739185029Spjd /* unmask channel */ 740185029Spjd outb(DMA2_SMSK, chan & 3); 741185029Spjd } 742185029Spjd} 743185029Spjd 744185029Spjdvoid isa_dmadone(int flags, caddr_t addr, int nbytes, int chan) 745212805Spjd{ 746212805Spjd#ifdef DIAGNOSTIC 747212805Spjd if (chan & ~VALID_DMA_MASK) 748212805Spjd panic("isa_dmadone: channel out of range"); 749212805Spjd 750212805Spjd if (dma_inuse & (1 << chan) == 0) 751185029Spjd printf("isa_dmadone: channel %d not acquired\n", chan); 752185029Spjd#endif 753185029Spjd 754192194Sdfr#if 0 755192194Sdfr /* 756192194Sdfr * XXX This should be checked, but drivers like ad1848 only call 757344399Skevans * isa_dmastart() once because they use Auto DMA mode. If we 758344399Skevans * leave this in, drivers that do this will print this continuously. 759344399Skevans */ 760344399Skevans if (dma_busy & (1 << chan) == 0) 761344399Skevans printf("isa_dmadone: channel %d not busy\n", chan); 762344399Skevans#endif 763344399Skevans 764344399Skevans if (dma_bounced & (1 << chan)) { 765344399Skevans /* copy bounce buffer on read */ 766185029Spjd if (flags & B_READ) 767185029Spjd bcopy(dma_bouncebuf[chan], addr, nbytes); 768185029Spjd 769241294Savg dma_bounced &= ~(1 << chan); 770185029Spjd } 771241294Savg dma_busy &= ~(1 << chan); 772185029Spjd} 773241294Savg 774241294Savg/* 775241294Savg * Check for problems with the address range of a DMA transfer 776185029Spjd * (non-contiguous physical pages, outside of bus address space, 777185029Spjd * crossing DMA page boundaries). 778241293Savg * Return true if special handling needed. 779241293Savg */ 780241293Savg 781308914Savgstatic int 782308914Savgisa_dmarangecheck(caddr_t va, u_int length, int chan) { 783308914Savg vm_offset_t phys, priorpage = 0, endva; 784308914Savg u_int dma_pgmsk = (chan & 4) ? ~(128*1024-1) : ~(64*1024-1); 785308914Savg 786308914Savg endva = (vm_offset_t)round_page(va + length); 787308914Savg for (; va < (caddr_t) endva ; va += PAGE_SIZE) { 788308914Savg phys = trunc_page(pmap_extract(pmap_kernel(), (vm_offset_t)va)); 789308914Savg#define ISARAM_END RAM_END 790308914Savg if (phys == 0) 791308914Savg panic("isa_dmacheck: no physical page present"); 792308914Savg if (phys >= ISARAM_END) 793308914Savg return (1); 794308914Savg if (priorpage) { 795308914Savg if (priorpage + PAGE_SIZE != phys) 796308914Savg return (1); 797308914Savg /* check if crossing a DMA page boundary */ 798329099Skevans if (((u_int)priorpage ^ (u_int)phys) & dma_pgmsk) 799308914Savg return (1); 800308914Savg } 801308914Savg priorpage = phys; 802308914Savg } 803308914Savg return (0); 804308914Savg} 805308914Savg 806308914Savg#define NMI_PARITY (1 << 7) 807308914Savg#define NMI_IOCHAN (1 << 6) 808308914Savg#define ENMI_WATCHDOG (1 << 7) 809308914Savg#define ENMI_BUSTIMER (1 << 6) 810308914Savg#define ENMI_IOSTATUS (1 << 5) 811308914Savg 812308914Savg/* 813308914Savg * Handle a NMI, possibly a machine check. 814235329Savg * return true to panic system, false to ignore. 815235329Savg */ 816235329Savgint 817235329Savgisa_nmi(cd) 818235329Savg int cd; 819185029Spjd{ 820198079Sjhb int isa_port = inb(0x61); 821185029Spjd int eisa_port = inb(0x461); 822185029Spjd if(isa_port & NMI_PARITY) { 823185029Spjd panic("RAM parity error, likely hardware failure."); 824234339Savg } else if(isa_port & NMI_IOCHAN) { 825329099Skevans panic("I/O channel check, likely hardware failure."); 826234339Savg } else if(eisa_port & ENMI_WATCHDOG) { 827234339Savg panic("EISA watchdog timer expired, likely hardware failure."); 828234339Savg } else if(eisa_port & ENMI_BUSTIMER) { 829329099Skevans panic("EISA bus timeout, likely hardware failure."); 830185029Spjd } else if(eisa_port & ENMI_IOSTATUS) { 831234339Savg panic("EISA I/O port status error."); 832241288Savg } else { 833185029Spjd printf("\nNMI ISA %x, EISA %x\n", isa_port, eisa_port); 834185029Spjd return(0); 835185029Spjd } 836185029Spjd} 837308914Savg 838308914Savg/* 839308914Savg * Caught a stray interrupt, notify 840308914Savg */ 841185029Spjdstatic void 842294925Simpisa_strayintr(d) 843185029Spjd int d; 844185029Spjd{ 845185029Spjd 846185029Spjd /* DON'T BOTHER FOR NOW! */ 847344399Skevans /* for some reason, we get bursts of intr #7, even if not enabled! */ 848213136Spjd /* 849185029Spjd * Well the reason you got bursts of intr #7 is because someone 850185029Spjd * raised an interrupt line and dropped it before the 8259 could 851185029Spjd * prioritize it. This is documented in the intel data book. This 852185029Spjd * means you have BAD hardware! I have changed this so that only 853185029Spjd * the first 5 get logged, then it quits logging them, and puts 854185029Spjd * out a special message. rgrimes 3/25/1993 855185029Spjd */ 856185029Spjd /* 857235329Savg * XXX TODO print a different message for #7 if it is for a 858235329Savg * glitch. Glitches can be distinguished from real #7's by 859235329Savg * testing that the in-service bit is _not_ set. The test 860241288Savg * must be done before sending an EOI so it can't be done if 861235329Savg * we are using AUTO_EOI_1. 862235329Savg */ 863241288Savg if (intrcnt[NR_DEVICES + d] <= 5) 864241288Savg log(LOG_ERR, "stray irq %d\n", d); 865241288Savg if (intrcnt[NR_DEVICES + d] == 5) 866241288Savg log(LOG_CRIT, 867235329Savg "too many stray irq %d's; not logging any more\n", d); 868241288Savg} 869235329Savg 870241288Savg/* 871235329Savg * Find the highest priority enabled display device. Since we can't 872185029Spjd * distinguish display devices from ttys, depend on display devices 873185029Spjd * being sensitive and before sensitive non-display devices (if any) 874213136Spjd * in isa_devtab_tty. 875213136Spjd * 876185029Spjd * XXX we should add capability flags IAMDISPLAY and ISUPPORTCONSOLES. 877185029Spjd */ 878185029Spjdstruct isa_device * 879329099Skevansfind_display() 880185029Spjd{ 881185029Spjd struct isa_device *dvp; 882185029Spjd 883185029Spjd for (dvp = isa_devtab_tty; dvp->id_driver != NULL; dvp++) 884185029Spjd if (dvp->id_driver->sensitive_hw && dvp->id_enabled) 885185029Spjd return (dvp); 886185029Spjd return (NULL); 887185029Spjd} 888185029Spjd 889185029Spjd/* 890308914Savg * find an ISA device in a given isa_devtab_* table, given 891185029Spjd * the table to search, the expected id_driver entry, and the unit number. 892185029Spjd * 893308914Savg * this function is defined in isa_device.h, and this location is debatable; 894308914Savg * i put it there because it's useless w/o, and directly operates on 895308914Savg * the other stuff in that file. 896308914Savg * 897308914Savg */ 898308914Savg 899185029Spjdstruct isa_device *find_isadev(table, driverp, unit) 900185029Spjd struct isa_device *table; 901185029Spjd struct isa_driver *driverp; 902185029Spjd int unit; 903185029Spjd{ 904185029Spjd if (driverp == NULL) /* sanity check */ 905185029Spjd return NULL; 906185029Spjd 907185029Spjd while ((table->id_driver != driverp) || (table->id_unit != unit)) { 908185029Spjd if (table->id_driver == 0) 909185029Spjd return NULL; 910185029Spjd 911185029Spjd table++; 912185029Spjd } 913185029Spjd 914235329Savg return table; 915235329Savg} 916185029Spjd 917185029Spjd/* 918185029Spjd * Return nonzero if a (masked) irq is pending for a given device. 919185029Spjd */ 920185029Spjdint 921185029Spjdisa_irq_pending(dvp) 922185029Spjd struct isa_device *dvp; 923185029Spjd{ 924185029Spjd unsigned id_irq; 925185029Spjd 926185029Spjd id_irq = dvp->id_irq; 927185029Spjd if (id_irq & 0xff) 928185029Spjd return (inb(IO_ICU1) & id_irq); 929185029Spjd return (inb(IO_ICU2) & (id_irq >> 8)); 930185029Spjd} 931185029Spjd 932185029Spjdint 933185029Spjdupdate_intr_masks(void) 934185029Spjd{ 935185029Spjd int intr, n=0; 936185029Spjd u_int mask,*maskptr; 937185029Spjd 938185029Spjd for (intr=0; intr < ICU_LEN; intr ++) { 939185029Spjd if (intr==2) continue; 940185029Spjd maskptr = intr_mptr[intr]; 941185029Spjd if (!maskptr) continue; 942185029Spjd *maskptr |= 1 << intr; 943185029Spjd mask = *maskptr; 944185029Spjd if (mask != intr_mask[intr]) { 945185029Spjd#if 0 946185029Spjd printf ("intr_mask[%2d] old=%08x new=%08x ptr=%p.\n", 947185029Spjd intr, intr_mask[intr], mask, maskptr); 948185029Spjd#endif 949185029Spjd intr_mask[intr]=mask; 950185029Spjd n++; 951185029Spjd } 952185029Spjd 953185029Spjd } 954185029Spjd return (n); 955185029Spjd} 956185029Spjd 957185029Spjdint 958185029Spjdregister_intr(intr, device_id, flags, handler, maskptr, unit) 959185029Spjd int intr; 960185029Spjd int device_id; 961185029Spjd u_int flags; 962185029Spjd inthand2_t *handler; 963185029Spjd u_int *maskptr; 964185029Spjd int unit; 965185029Spjd{ 966185029Spjd char *cp; 967185029Spjd u_long ef; 968185029Spjd int id; 969185029Spjd u_int mask = (maskptr ? *maskptr : 0); 970185029Spjd 971185029Spjd if ((u_int)intr >= ICU_LEN || intr == 2 972185029Spjd || (u_int)device_id >= NR_DEVICES) 973185029Spjd return (EINVAL); 974185029Spjd if (intr_handler[intr] != isa_strayintr) 975185029Spjd return (EBUSY); 976185029Spjd ef = read_eflags(); 977185029Spjd disable_intr(); 978185029Spjd intr_countp[intr] = &intrcnt[device_id]; 979185029Spjd intr_handler[intr] = handler; 980185029Spjd intr_mptr[intr] = maskptr; 981185029Spjd intr_mask[intr] = mask | (1 << intr); 982185029Spjd intr_unit[intr] = unit; 983185029Spjd setidt(ICU_OFFSET + intr, 984185029Spjd flags & RI_FAST ? fastintr[intr] : slowintr[intr], 985185029Spjd SDT_SYS386IGT, SEL_KPL, GSEL(GCODE_SEL, SEL_KPL)); 986185029Spjd write_eflags(ef); 987185029Spjd for (cp = intrnames, id = 0; id <= device_id; id++) 988185029Spjd while (*cp++ != '\0') 989235329Savg ; 990235329Savg if (cp > eintrnames) 991235329Savg return (0); 992241293Savg if (intr < 10) { 993296963Sallanjude cp[-3] = intr + '0'; 994329099Skevans cp[-2] = ' '; 995344399Skevans } else { 996296963Sallanjude cp[-3] = '1'; 997241293Savg cp[-2] = intr - 10 + '0'; 998241293Savg } 999241293Savg return (0); 1000241293Savg} 1001344399Skevans 1002344399Skevansstatic void 1003344399Skevansregister_imask(dvp, mask) 1004344399Skevans struct isa_device *dvp; 1005344399Skevans u_int mask; 1006185029Spjd{ 1007185029Spjd if (dvp->id_alive && dvp->id_irq) { 1008235329Savg int intr; 1009185029Spjd 1010185029Spjd intr = ffs(dvp->id_irq) - 1; 1011235329Savg intr_mask[intr] = mask | (1 <<intr); 1012235329Savg } 1013185029Spjd (void) update_intr_masks(); 1014185029Spjd} 1015185029Spjd 1016241288Savgint 1017241288Savgunregister_intr(intr, handler) 1018241288Savg int intr; 1019241288Savg inthand2_t *handler; 1020241288Savg{ 1021241288Savg u_long ef; 1022241288Savg 1023241288Savg if ((u_int)intr >= ICU_LEN || handler != intr_handler[intr]) 1024241288Savg return (EINVAL); 1025241288Savg ef = read_eflags(); 1026241288Savg disable_intr(); 1027241288Savg intr_countp[intr] = &intrcnt[NR_DEVICES + intr]; 1028241288Savg intr_handler[intr] = isa_strayintr; 1029241288Savg intr_mptr[intr] = NULL; 1030241288Savg intr_mask[intr] = HWI_MASK | SWI_MASK; 1031241288Savg intr_unit[intr] = intr; 1032241288Savg setidt(ICU_OFFSET + intr, slowintr[intr], SDT_SYS386IGT, SEL_KPL, 1033241288Savg GSEL(GCODE_SEL, SEL_KPL)); 1034241288Savg write_eflags(ef); 1035241288Savg return (0); 1036241288Savg} 1037241288Savg