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1.1 ! root 1: /*- ! 2: * Copyright (c) 1991 The Regents of the University of California. ! 3: * All rights reserved. ! 4: * ! 5: * This code is derived from software contributed to Berkeley by ! 6: * William Jolitz. ! 7: * ! 8: * Redistribution and use in source and binary forms, with or without ! 9: * modification, are permitted provided that the following conditions ! 10: * are met: ! 11: * 1. Redistributions of source code must retain the above copyright ! 12: * notice, this list of conditions and the following disclaimer. ! 13: * 2. Redistributions in binary form must reproduce the above copyright ! 14: * notice, this list of conditions and the following disclaimer in the ! 15: * documentation and/or other materials provided with the distribution. ! 16: * 3. All advertising materials mentioning features or use of this software ! 17: * must display the following acknowledgement: ! 18: * This product includes software developed by the University of ! 19: * California, Berkeley and its contributors. ! 20: * 4. Neither the name of the University nor the names of its contributors ! 21: * may be used to endorse or promote products derived from this software ! 22: * without specific prior written permission. ! 23: * ! 24: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ! 25: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE ! 26: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ! 27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE ! 28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL ! 29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS ! 30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) ! 31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT ! 32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY ! 33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF ! 34: * SUCH DAMAGE. ! 35: * ! 36: * @(#)isa.c 7.2 (Berkeley) 5/13/91 ! 37: */ ! 38: ! 39: /* ! 40: * code to manage AT bus ! 41: */ ! 42: ! 43: #include "param.h" ! 44: #include "systm.h" ! 45: #include "conf.h" ! 46: #include "file.h" ! 47: #include "buf.h" ! 48: #include "uio.h" ! 49: #include "syslog.h" ! 50: #include "machine/segments.h" ! 51: #include "i386/isa/isa_device.h" ! 52: #include "i386/isa/icu.h" ! 53: ! 54: /* ! 55: * Configure all ISA devices ! 56: */ ! 57: isa_configure() { ! 58: struct isa_device *dvp; ! 59: struct isa_driver *dp; ! 60: ! 61: splhigh(); ! 62: INTREN(IRQ_SLAVE); ! 63: for (dvp = isa_devtab_bio; config_isadev(dvp,&biomask); dvp++); ! 64: for (dvp = isa_devtab_tty; config_isadev(dvp,&ttymask); dvp++); ! 65: for (dvp = isa_devtab_net; config_isadev(dvp,&netmask); dvp++); ! 66: for (dvp = isa_devtab_null; config_isadev(dvp,0); dvp++); ! 67: #include "sl.h" ! 68: #if NSL > 0 ! 69: netmask |= ttymask; ! 70: ttymask |= netmask; ! 71: #endif ! 72: /* biomask |= ttymask ; can some tty devices use buffers? */ ! 73: printf("biomask %x ttymask %x netmask %x\n", biomask, ttymask, netmask); ! 74: splnone(); ! 75: } ! 76: ! 77: /* ! 78: * Configure an ISA device. ! 79: */ ! 80: config_isadev(isdp, mp) ! 81: struct isa_device *isdp; ! 82: int *mp; ! 83: { ! 84: struct isa_driver *dp; ! 85: ! 86: if (dp = isdp->id_driver) { ! 87: if (isdp->id_maddr) { ! 88: extern int atdevbase; ! 89: ! 90: isdp->id_maddr -= 0xa0000; ! 91: isdp->id_maddr += atdevbase; ! 92: } ! 93: isdp->id_alive = (*dp->probe)(isdp); ! 94: if (isdp->id_alive) { ! 95: printf("%s%d", dp->name, isdp->id_unit); ! 96: (*dp->attach)(isdp); ! 97: printf(" at 0x%x ", isdp->id_iobase); ! 98: if(isdp->id_irq) { ! 99: int intrno; ! 100: ! 101: intrno = ffs(isdp->id_irq)-1; ! 102: printf("irq %d ", intrno); ! 103: INTREN(isdp->id_irq); ! 104: if(mp)INTRMASK(*mp,isdp->id_irq); ! 105: setidt(ICU_OFFSET+intrno, isdp->id_intr, ! 106: SDT_SYS386IGT, SEL_KPL); ! 107: } ! 108: if (isdp->id_drq != -1) printf("drq %d ", isdp->id_drq); ! 109: printf("on isa\n"); ! 110: } ! 111: return (1); ! 112: } else return(0); ! 113: } ! 114: ! 115: #define IDTVEC(name) __CONCAT(X,name) ! 116: /* default interrupt vector table */ ! 117: extern IDTVEC(intr0), IDTVEC(intr1), IDTVEC(intr2), IDTVEC(intr3), ! 118: IDTVEC(intr4), IDTVEC(intr5), IDTVEC(intr6), IDTVEC(intr7), ! 119: IDTVEC(intr8), IDTVEC(intr9), IDTVEC(intr10), IDTVEC(intr11), ! 120: IDTVEC(intr12), IDTVEC(intr13), IDTVEC(intr14), IDTVEC(intr15); ! 121: ! 122: /* ! 123: * Fill in default interrupt table (in case of spuruious interrupt ! 124: * during configuration of kernel, setup interrupt control unit ! 125: */ ! 126: isa_defaultirq() { ! 127: ! 128: /* first icu */ ! 129: setidt(32, &IDTVEC(intr0), SDT_SYS386IGT, SEL_KPL); ! 130: setidt(33, &IDTVEC(intr1), SDT_SYS386IGT, SEL_KPL); ! 131: setidt(34, &IDTVEC(intr2), SDT_SYS386IGT, SEL_KPL); ! 132: setidt(35, &IDTVEC(intr3), SDT_SYS386IGT, SEL_KPL); ! 133: setidt(36, &IDTVEC(intr4), SDT_SYS386IGT, SEL_KPL); ! 134: setidt(37, &IDTVEC(intr5), SDT_SYS386IGT, SEL_KPL); ! 135: setidt(38, &IDTVEC(intr6), SDT_SYS386IGT, SEL_KPL); ! 136: setidt(39, &IDTVEC(intr7), SDT_SYS386IGT, SEL_KPL); ! 137: ! 138: /* second icu */ ! 139: setidt(40, &IDTVEC(intr8), SDT_SYS386IGT, SEL_KPL); ! 140: setidt(41, &IDTVEC(intr9), SDT_SYS386IGT, SEL_KPL); ! 141: setidt(42, &IDTVEC(intr10), SDT_SYS386IGT, SEL_KPL); ! 142: setidt(43, &IDTVEC(intr11), SDT_SYS386IGT, SEL_KPL); ! 143: setidt(44, &IDTVEC(intr12), SDT_SYS386IGT, SEL_KPL); ! 144: setidt(45, &IDTVEC(intr13), SDT_SYS386IGT, SEL_KPL); ! 145: setidt(46, &IDTVEC(intr14), SDT_SYS386IGT, SEL_KPL); ! 146: setidt(47, &IDTVEC(intr15), SDT_SYS386IGT, SEL_KPL); ! 147: ! 148: /* initialize 8259's */ ! 149: outb(0xf1,0); ! 150: outb(0x20,0x11); ! 151: outb(0x21,32); ! 152: outb(0x21,4); ! 153: outb(0x21,1); ! 154: outb(0x21,0xff); ! 155: ! 156: outb(0xa0,0x11); ! 157: outb(0xa1,40); ! 158: outb(0xa1,2); ! 159: outb(0xa1,1); ! 160: outb(0xa1,0xff); ! 161: } ! 162: ! 163: /* stuff needed for virtual to physical calculations */ ! 164: ! 165: struct buf *dma_bounce[8]; ! 166: #define MAXDMASZ 512 ! 167: ! 168: /* XXX temporary crud */ ! 169: kernel_space(x) ! 170: unsigned long x; ! 171: { ! 172: if (x >= KERNBASE) return 1; ! 173: else return 0; ! 174: } ! 175: ! 176: ! 177: /****************************************************************************/ ! 178: /* at_dma */ ! 179: /* set up DMA read/write operation and virtual address addr for nbytes */ ! 180: /****************************************************************************/ ! 181: at_dma(read,addr,nbytes, chan) ! 182: int read; ! 183: unsigned long addr; ! 184: int nbytes; ! 185: { ! 186: unsigned long phys; ! 187: int s,raw; ! 188: caddr_t bounce; ! 189: ! 190: if (kernel_space(addr)) raw = 0; ! 191: else raw = 1; ! 192: ! 193: if(raw) { ! 194: if (dma_bounce[chan] == 0) ! 195: dma_bounce[chan] = geteblk(MAXDMASZ); ! 196: bounce = dma_bounce[chan]->b_un.b_addr; ! 197: } ! 198: ! 199: /* copy bounce buffer on write */ ! 200: if (raw && !read) bcopy(addr,bounce,nbytes); ! 201: ! 202: /* Set read/write bytes */ ! 203: if (read) { ! 204: outb(0xC,0x46); outb(0xB,0x46); ! 205: } else { ! 206: outb(0xC,0x4A); outb(0xB,0x4A); ! 207: } ! 208: /* Send start address */ ! 209: if (raw) phys = (unsigned long) bounce; ! 210: else phys = addr; ! 211: /* translate to physical */ ! 212: phys = pmap_extract(pmap_kernel(), (vm_offset_t)phys); ! 213: outb(0x4,phys & 0xFF); ! 214: outb(0x4,(phys>>8) & 0xFF); ! 215: outb(0x81,(phys>>16) & 0xFF); ! 216: /* Send count */ ! 217: nbytes--; ! 218: outb(0x5,nbytes & 0xFF); ! 219: outb(0x5,(nbytes>>8) & 0xFF); ! 220: /* set channel 2 */ ! 221: outb(0x0A,chan); ! 222: } ! 223: ! 224: /* ! 225: * Handle a NMI, possibly a machine check. ! 226: * return true to panic system, false to ignore. ! 227: */ ! 228: isa_nmi(cd) { ! 229: ! 230: log(LOG_CRIT, "\nNMI port 61 %x, port 70 %x\n", inb(0x61), inb(0x70)); ! 231: return(0); ! 232: } ! 233: ! 234: /* ! 235: * Caught a stray interrupt, notify ! 236: */ ! 237: isa_strayintr(d) { ! 238: ! 239: /* for some reason, we get bursts of intr #7, even if not enabled! */ ! 240: log(LOG_ERR,"ISA strayintr %d", ffs(d)-1); ! 241: }
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