05c3051f86
Another boring one. We need to endian swap before checking flags. Sponsored by: Tag1 Consulting, Inc.
147 lines
3.7 KiB
C
147 lines
3.7 KiB
C
/*-
|
|
* Copyright (c) 2019 Justin Hibbits
|
|
*
|
|
* 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.
|
|
*
|
|
* 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>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/types.h>
|
|
#include <sys/eventhandler.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/endian.h>
|
|
|
|
#include <vm/vm.h>
|
|
#include <vm/pmap.h>
|
|
|
|
#include <machine/spr.h>
|
|
#include <machine/trap.h>
|
|
#include "opal.h"
|
|
|
|
struct opal_hmi_event {
|
|
uint8_t version;
|
|
uint8_t severity;
|
|
uint8_t type;
|
|
uint8_t disposition;
|
|
uint8_t rsvd_1[4];
|
|
uint64_t hmer;
|
|
uint64_t tfmr;
|
|
union {
|
|
struct {
|
|
uint8_t xstop_type;
|
|
uint8_t rsvd_2[3];
|
|
uint32_t xstop_reason;
|
|
union {
|
|
uint32_t pir;
|
|
uint32_t chip_id;
|
|
};
|
|
};
|
|
};
|
|
};
|
|
|
|
#define HMI_DISP_RECOVERED 0
|
|
#define HMI_DISP_NOT_RECOVERED 1
|
|
|
|
static void
|
|
opal_hmi_event_handler(void *unused, struct opal_msg *msg)
|
|
{
|
|
struct opal_hmi_event evt;
|
|
|
|
memcpy(&evt, &msg->params, sizeof(evt));
|
|
printf("Hypervisor Maintenance Event received"
|
|
"(Severity %d, type %d, HMER: %016lx).\n",
|
|
evt.severity, evt.type, evt.hmer);
|
|
|
|
if (evt.disposition == HMI_DISP_NOT_RECOVERED)
|
|
panic("Unrecoverable hypervisor maintenance exception on CPU %d",
|
|
evt.pir);
|
|
|
|
return;
|
|
}
|
|
|
|
static int
|
|
opal_hmi_handler2(struct trapframe *frame)
|
|
{
|
|
/*
|
|
* Use DMAP preallocated pcpu memory to handle
|
|
* the phys flags pointer.
|
|
*/
|
|
uint64_t *flags = PCPU_PTR(aim.opal_hmi_flags);
|
|
int err;
|
|
|
|
*flags = 0;
|
|
err = opal_call(OPAL_HANDLE_HMI2, DMAP_TO_PHYS((vm_offset_t)flags));
|
|
|
|
if (be64toh(*flags) & OPAL_HMI_FLAGS_TOD_TB_FAIL)
|
|
panic("TOD/TB recovery failure");
|
|
|
|
if (err == OPAL_SUCCESS)
|
|
return (0);
|
|
|
|
printf("HMI handler failed! OPAL error code: %d\n", err);
|
|
|
|
return (-1);
|
|
}
|
|
|
|
static int
|
|
opal_hmi_handler(struct trapframe *frame)
|
|
{
|
|
int err;
|
|
|
|
err = opal_call(OPAL_HANDLE_HMI);
|
|
|
|
if (err == OPAL_SUCCESS)
|
|
return (0);
|
|
|
|
printf("HMI handler failed! OPAL error code: %d\n", err);
|
|
|
|
return (-1);
|
|
}
|
|
|
|
static void
|
|
opal_setup_hmi(void *data)
|
|
{
|
|
/* This only works for OPAL, so first make sure we have it. */
|
|
if (opal_check() != 0)
|
|
return;
|
|
|
|
if (opal_call(OPAL_CHECK_TOKEN, OPAL_HANDLE_HMI2) == OPAL_TOKEN_PRESENT)
|
|
hmi_handler = opal_hmi_handler2;
|
|
else if (opal_call(OPAL_CHECK_TOKEN, OPAL_HANDLE_HMI) == OPAL_TOKEN_PRESENT)
|
|
hmi_handler = opal_hmi_handler;
|
|
else {
|
|
printf("Warning: No OPAL HMI handler found.\n");
|
|
return;
|
|
}
|
|
|
|
EVENTHANDLER_REGISTER(OPAL_HMI_EVT, opal_hmi_event_handler, NULL,
|
|
EVENTHANDLER_PRI_ANY);
|
|
|
|
if (bootverbose)
|
|
printf("Installed OPAL HMI handler.\n");
|
|
}
|
|
|
|
SYSINIT(opal_setup_hmi, SI_SUB_CPU, SI_ORDER_ANY, opal_setup_hmi, NULL);
|