Annotation of sys/arch/vax/vax/ka46.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: ka46.c,v 1.7 2002/07/21 19:28:50 hugh Exp $ */
! 2: /* $NetBSD: ka46.c,v 1.12 2000/03/04 07:27:49 matt Exp $ */
! 3: /*
! 4: * Copyright (c) 1998 Ludd, University of Lule}, Sweden.
! 5: * All rights reserved.
! 6: *
! 7: * This code is derived from software contributed to Ludd by Bertram Barth.
! 8: *
! 9: * Redistribution and use in source and binary forms, with or without
! 10: * modification, are permitted provided that the following conditions
! 11: * are met:
! 12: * 1. Redistributions of source code must retain the above copyright
! 13: * notice, this list of conditions and the following disclaimer.
! 14: * 2. Redistributions in binary form must reproduce the above copyright
! 15: * notice, this list of conditions and the following disclaimer in the
! 16: * documentation and/or other materials provided with the distribution.
! 17: * 3. All advertising materials mentioning features or use of this software
! 18: * must display the following acknowledgement:
! 19: * This product includes software developed at Ludd, University of
! 20: * Lule}, Sweden and its contributors.
! 21: * 4. The name of the author may not be used to endorse or promote products
! 22: * derived from this software without specific prior written permission
! 23: *
! 24: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 25: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 26: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 27: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 28: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 29: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 30: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 31: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 32: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 33: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 34: */
! 35:
! 36: #include <sys/param.h>
! 37: #include <sys/types.h>
! 38: #include <sys/device.h>
! 39: #include <sys/kernel.h>
! 40: #include <sys/systm.h>
! 41:
! 42: #include <uvm/uvm_extern.h>
! 43:
! 44: #include <machine/pte.h>
! 45: #include <machine/cpu.h>
! 46: #include <machine/mtpr.h>
! 47: #include <machine/sid.h>
! 48: #include <machine/pmap.h>
! 49: #include <machine/nexus.h>
! 50: #include <machine/uvax.h>
! 51: #include <machine/ka410.h>
! 52: #include <machine/ka420.h>
! 53: #include <machine/ka46.h>
! 54: #include <machine/clock.h>
! 55: #include <machine/vsbus.h>
! 56:
! 57: static void ka46_conf(void);
! 58: static void ka46_steal_pages(void);
! 59: static void ka46_memerr(void);
! 60: static int ka46_mchk(caddr_t);
! 61: static void ka46_halt(void);
! 62: static void ka46_reboot(int);
! 63: static void ka46_cache_enable(void);
! 64:
! 65: struct vs_cpu *ka46_cpu;
! 66:
! 67: /*
! 68: * Declaration of 46-specific calls.
! 69: */
! 70: struct cpu_dep ka46_calls = {
! 71: ka46_steal_pages,
! 72: ka46_mchk,
! 73: ka46_memerr,
! 74: ka46_conf,
! 75: chip_clkread,
! 76: chip_clkwrite,
! 77: 12, /* ~VUPS */
! 78: 2, /* SCB pages */
! 79: ka46_halt,
! 80: ka46_reboot,
! 81: };
! 82:
! 83:
! 84: void
! 85: ka46_conf()
! 86: {
! 87: switch(vax_siedata & 0xFF) {
! 88: case VAX_VTYP_47:
! 89: printf("cpu: KA47\n");
! 90: break;
! 91: case VAX_VTYP_46:
! 92: printf("cpu: KA46\n");
! 93: break;
! 94: default:
! 95: printf("cpu: Unknown Mariah\n");
! 96: }
! 97:
! 98: ka46_cpu = (void *)vax_map_physmem(VS_REGS, 1);
! 99: printf("cpu: turning on floating point chip\n");
! 100: mtpr(2, PR_ACCS); /* Enable floating points */
! 101: /*
! 102: * Setup parameters necessary to read time from clock chip.
! 103: */
! 104: clk_adrshift = 1; /* Addressed at long's... */
! 105: clk_tweak = 2; /* ...and shift two */
! 106: clk_page = (short *)vax_map_physmem(VS_CLOCK, 1);
! 107: }
! 108:
! 109: void
! 110: ka46_cache_enable()
! 111: {
! 112: int i, *tmp;
! 113:
! 114: /* Disable caches */
! 115: *(int *)KA46_CCR &= ~CCR_SPECIO;/* secondary */
! 116: mtpr(PCSTS_FLUSH, PR_PCSTS); /* primary */
! 117: *(int *)KA46_BWF0 &= ~BWF0_FEN; /* invalidate filter */
! 118:
! 119: /* Clear caches */
! 120: tmp = (void *)KA46_INVFLT; /* inv filter */
! 121: for (i = 0; i < 32768; i++)
! 122: tmp[i] = 0;
! 123:
! 124: /* Write valid parity to all primary cache entries */
! 125: for (i = 0; i < 256; i++) {
! 126: mtpr(i << 3, PR_PCIDX);
! 127: mtpr(PCTAG_PARITY, PR_PCTAG);
! 128: }
! 129:
! 130: /* Secondary cache */
! 131: tmp = (void *)KA46_TAGST;
! 132: for (i = 0; i < KA46_TAGSZ*2; i+=2)
! 133: tmp[i] = 0;
! 134:
! 135: /* Enable cache */
! 136: *(int *)KA46_BWF0 |= BWF0_FEN; /* invalidate filter */
! 137: mtpr(PCSTS_ENABLE, PR_PCSTS);
! 138: *(int *)KA46_CCR = CCR_SPECIO | CCR_CENA;
! 139: }
! 140:
! 141: void
! 142: ka46_memerr()
! 143: {
! 144: printf("Memory err!\n");
! 145: }
! 146:
! 147: int
! 148: ka46_mchk(addr)
! 149: caddr_t addr;
! 150: {
! 151: panic("Machine check");
! 152: return 0;
! 153: }
! 154:
! 155: void
! 156: ka46_steal_pages()
! 157: {
! 158:
! 159: /* Turn on caches (to speed up execution a bit) */
! 160: ka46_cache_enable();
! 161: }
! 162:
! 163: #define KA46_CPMBX 0x38
! 164: #define KA46_HLT_HALT 0xcf
! 165: #define KA46_HLT_BOOT 0x8b
! 166:
! 167: static void
! 168: ka46_halt()
! 169: {
! 170: if (((u_int8_t *) clk_page)[KA46_CPMBX] != KA46_HLT_HALT)
! 171: ((u_int8_t *) clk_page)[KA46_CPMBX] = KA46_HLT_HALT;
! 172: asm("halt");
! 173: }
! 174:
! 175: static void
! 176: ka46_reboot(arg)
! 177: int arg;
! 178: {
! 179: if (((u_int8_t *) clk_page)[KA46_CPMBX] != KA46_HLT_BOOT)
! 180: ((u_int8_t *) clk_page)[KA46_CPMBX] = KA46_HLT_BOOT;
! 181: asm("halt");
! 182: }
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