NetBSD-5.0.2/sys/arch/vax/vax/ka670.c
/* $NetBSD: ka670.c,v 1.14 2008/03/11 05:34:03 matt Exp $ */
/*
* Copyright (c) 1999 Ludd, University of Lule}, Sweden.
* All rights reserved.
*
* This code is derived from software contributed to Ludd by Bertram Barth.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed at Ludd, University of
* Lule}, Sweden and its contributors.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ka670.c,v 1.14 2008/03/11 05:34:03 matt Exp $");
#include <sys/param.h>
#include <sys/types.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <uvm/uvm_extern.h>
#include <machine/pte.h>
#include <machine/cpu.h>
#include <machine/mtpr.h>
#include <machine/sid.h>
#include <machine/pmap.h>
#include <machine/nexus.h>
#include <machine/uvax.h>
#include <machine/vsbus.h>
#include <machine/ka670.h>
#include <machine/clock.h>
static void ka670_memerr(void);
static void ka670_conf(void);
static void ka670_attach_cpu(device_t);
static int ka670_mchk(void *);
static int ka670_cache_init(void); /* "int mapen" as argument? */
static const char * const ka670_devs[] = { "cpu", "sgec", "shac", "uba", NULL };
const struct cpu_dep ka670_calls = {
.cpu_mchk = ka670_mchk,
.cpu_memerr = ka670_memerr,
.cpu_conf = ka670_conf,
.cpu_gettime = generic_gettime,
.cpu_settime = generic_settime,
.cpu_vups = 8, /* 8 VUP */
.cpu_scbsz = 2, /* SCB pages */
.cpu_halt = generic_halt,
.cpu_reboot = generic_reboot,
.cpu_devs = ka670_devs,
.cpu_attach_cpu = ka670_attach_cpu,
};
#define KA670_MC_RESTART 0x00008000 /* Restart possible*/
#define KA670_PSL_FPDONE 0x00010000 /* First Part Done */
struct ka670_mcframe { /* Format of RigelMAX machine check frame: */
int mc670_bcnt; /* byte count, always 24 (0x18) */
int mc670_code; /* machine check type code and restart bit */
int mc670_addr; /* most recent (faulting?) virtual address */
int mc670_viba; /* contents of VIBA register */
int mc670_sisr; /* ICCS bit 6 and SISR bits 15:0 */
int mc670_istate; /* internal state */
int mc670_sc; /* shift count register */
int mc670_pc; /* trapped PC */
int mc670_psl; /* trapped PSL */
};
#if 0
/*
* This is not the mchk types on KA670.
*/
static const char * const ka670_mctype[] = {
"no error (0)", /* Code 0: No error */
"FPA: protocol error", /* Code 1-5: FPA errors */
"FPA: illegal opcode",
"FPA: operand parity error",
"FPA: unknown status",
"FPA: result parity error",
"unused (6)", /* Code 6-7: Unused */
"unused (7)",
"MMU error (TLB miss)", /* Code 8-9: MMU errors */
"MMU error (TLB hit)",
"HW interrupt at unused IPL", /* Code 10: Interrupt error */
"MOVCx impossible state", /* Code 11-13: Microcode errors */
"undefined trap code (i-box)",
"undefined control store address",
"unused (14)", /* Code 14-15: Unused */
"unused (15)",
"PC tag or data parity error", /* Code 16: Cache error */
"data bus parity error", /* Code 17: Read error */
"data bus error (NXM)", /* Code 18: Write error */
"undefined data bus state", /* Code 19: Bus error */
};
#define MC670_MAX 19
#endif
static int ka670_error_count = 0;
int
ka670_mchk(void *addr)
{
struct ka670_mcframe * const mcf = addr;
mtpr(0x00, PR_MCESR); /* Acknowledge the machine check */
printf("machine check %d (0x%x)\n", mcf->mc670_code, mcf->mc670_code);
printf("PC %x PSL %x\n", mcf->mc670_pc, mcf->mc670_psl);
if (++ka670_error_count > 10) {
printf("error_count exceeded: %d\n", ka670_error_count);
return (-1);
}
/*
* If either the Restart flag is set or the First-Part-Done flag
* is set, and the TRAP2 (double error) bit is not set, then the
* error is recoverable.
*/
if (mfpr(PR_PCSTS) & KA670_PCS_TRAP2) {
printf("TRAP2 (double error) in ka670_mchk.\n");
panic("unrecoverable state in ka670_mchk.");
return (-1);
}
if ((mcf->mc670_code & KA670_MC_RESTART) ||
(mcf->mc670_psl & KA670_PSL_FPDONE)) {
printf("ka670_mchk: recovering from machine-check.\n");
ka670_cache_init(); /* reset caches */
return (0); /* go on; */
}
/*
* Unknown error state, panic/halt the machine!
*/
printf("ka670_mchk: unknown error state!\n");
return (-1);
}
void
ka670_memerr(void)
{
char sbuf[256];
/*
* Don\'t know what to do here. So just print some messages
* and try to go on...
*/
printf("memory error!\n");
bitmask_snprintf(mfpr(PR_PCSTS), KA670_PCSTS_BITS, sbuf, sizeof(sbuf));
printf("primary cache status: %s\n", sbuf);
bitmask_snprintf(mfpr(PR_BCSTS), KA670_BCSTS_BITS, sbuf, sizeof(sbuf));
printf("secondary cache status: %s\n", sbuf);
}
int
ka670_cache_init(void)
{
int val;
#ifdef DEBUG
char sbuf[256];
#endif
mtpr(KA670_PCS_REFRESH, PR_PCSTS); /* disable primary cache */
val = mfpr(PR_PCSTS);
mtpr(val, PR_PCSTS); /* clear error flags */
mtpr(8, PR_BCCTL); /* disable backup cache */
mtpr(0, PR_BCFBTS); /* flush backup cache tag store */
mtpr(0, PR_BCFPTS); /* flush primary cache tag store */
mtpr(0x0e, PR_BCCTL); /* enable backup cache */
mtpr(KA670_PCS_FLUSH | KA670_PCS_REFRESH, PR_PCSTS); /* flush primary cache */
mtpr(KA670_PCS_ENABLE | KA670_PCS_REFRESH, PR_PCSTS); /* flush primary cache */
#ifdef DEBUG
bitmask_snprintf(mfpr(PR_PCSTS), KA670_PCSTS_BITS, sbuf, sizeof(sbuf));
printf("primary cache status: %s\n", sbuf);
bitmask_snprintf(mfpr(PR_BCSTS), KA670_BCSTS_BITS, sbuf, sizeof(sbuf));
printf("secondary cache status: %s\n", sbuf);
#endif
return (0);
}
void
ka670_conf(void)
{
/*
* ka670_conf() gets called with MMU enabled, now it's save to
* init/reset the caches.
*/
ka670_cache_init();
cpmbx = (struct cpmbx *)vax_map_physmem(0x20140400, 1);
}
void
ka670_attach_cpu(device_t self)
{
aprint_normal(
": %s, Rigel (ucode rev %d), 2KB L1 cache, 128KB L2 cache\n",
"KA670",
vax_cpudata % 0377);
}