sun4v/promif/promif_mon.c

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <sys/promif_impl.h>
#include <sys/uadmin.h>
#include <sys/machsystm.h>
#include <sys/hypervisor_api.h>

#ifdef _KMDB

extern int kmdb_dpi_get_master_cpuid(void);
extern void kmdb_dpi_kernpanic(int cpuid);
extern void prom_reboot(char *bootstr);

#define PIL_DECL(p)
#define PIL_SET7(p)
#define PIL_REST(p)

#else

extern int vx_handler(cell_t *argument_array);
extern void kldc_debug_enter(void);

#define PIL_DECL(p) int p
#define PIL_SET7(p) (p = spl7())
#define PIL_REST(p) (splx(p))

#endif

#define PROMIF_ISPRINT(c)   (((c) >= ' ') && ((c) <= '~'))

static int promif_ask_before_reset =
#ifdef _KMDB
    1;
#else
    0;
#endif

/*ARGSUSED*/
int
promif_exit_to_mon(void *p)
{
    PIL_DECL(pil);

    PIL_SET7(pil);

    prom_printf("Program terminated\n");

    if (promif_ask_before_reset) {
        prom_printf("Press any key to reboot.");
        (void) prom_getchar();
    }

    (void) hv_mach_sir();

    /* should not return */
    ASSERT(0);

    PIL_REST(pil);

    return (0);
}

/*ARGSUSED*/
int
promif_enter_mon(void *p)
{
    char        cmd;
    static char *prompt = "c)ontinue, s)ync, r)eset? ";
    PIL_DECL(pil);

    PIL_SET7(pil);

#ifndef _KMDB
    idle_other_cpus();
    kldc_debug_enter();
#endif

    for (;;) {
        prom_printf("%s", prompt);
        cmd = promif_getchar();
        prom_printf("%c\n", cmd);

        switch (cmd) {

        case 'r':
            prom_printf("Resetting...\n");

            (void) hv_mach_sir();

            /* should not return */
            ASSERT(0);
            break;

        case '\r':
            break;

        case 's':
            {
#ifdef _KMDB
                kmdb_dpi_kernpanic(kmdb_dpi_get_master_cpuid());
#else
                cell_t arg = p1275_ptr2cell("sync");

                (void) vx_handler(&arg);
#endif
            }

            /* should not return */
            ASSERT(0);
            break;

        case 'c':
#ifndef _KMDB
            resume_other_cpus();
#endif
            PIL_REST(pil);

            return (0);

        default:
            if (PROMIF_ISPRINT(cmd))
                prom_printf("invalid option (%c)\n", cmd);
            break;
        }
    }

    _NOTE(NOTREACHED)
}