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dm: introduce system/full reset and suspend

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Guest has erquirement to support system/full reboot and S3. Which could
trigger different reset path in guest

Signed-off-by: Yin Fengwei <fengwei.yin@intel.com>
Acked-by: Anthony Xu <anthony.xu@intel.com>
This commit is contained in:
Yin Fengwei 2018-05-21 16:32:32 +08:00 committed by lijinxia
parent 76662a634f
commit 8d12c06270
6 changed files with 24 additions and 15 deletions
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22
devicemodel/arch/x86/pm.c
View File

@ -25,6 +25,9 @@
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#include <sys/types.h>
#include <stdio.h>
#include <assert.h>
#include <errno.h>
#include <pthread.h>
@ -53,7 +56,6 @@ reset_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
uint32_t *eax, void *arg)
{
int error;
static uint8_t reset_control;
if (bytes != 1)
@ -63,15 +65,17 @@ reset_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
else {
reset_control = *eax;
/* Treat hard and soft resets the same. */
if (reset_control & 0x4) {
error = vm_suspend(ctx, VM_SUSPEND_RESET);
assert(error == 0 || errno == EALREADY);
}
/* cold reset should clear the value in 0xcf9 */
if (reset_control & 0x8) {
if (*eax & 0x8) {
fprintf(stderr, "full reset\r\n");
error = vm_suspend(ctx, VM_SUSPEND_FULL_RESET);
assert(error ==0 || errno == EALREADY);
mevent_notify();
reset_control = 0;
} else if (*eax & 0x4) {
fprintf(stderr, "system reset\r\n");
error = vm_suspend(ctx, VM_SUSPEND_SYSTEM_RESET);
assert(error ==0 || errno == EALREADY);
mevent_notify();
}
}
return 0;

2
devicemodel/core/main.c
View File

@ -887,7 +887,7 @@ main(int argc, char *argv[])
vm_pause(ctx);
delete_cpu(ctx, BSP);
if (vm_get_suspend_mode() != VM_SUSPEND_RESET)
if (vm_get_suspend_mode() != VM_SUSPEND_FULL_RESET)
break;
vm_deinit_vdevs(ctx);

3
devicemodel/core/mevent.c
View File

@ -328,7 +328,8 @@ mevent_dispatch(void)
*/
mevent_handle(eventlist, ret);
if (vm_get_suspend_mode() != VM_SUSPEND_NONE)
if ((vm_get_suspend_mode() != VM_SUSPEND_NONE) &&
(vm_get_suspend_mode() != VM_SUSPEND_SYSTEM_RESET))
break;
}
}

2
devicemodel/hw/pci/wdt_i6300esb.c
View File

@ -105,7 +105,7 @@ wdt_expired_thread(union sigval v)
wdt_timeout = 1;
/* watchdog timer out, set the uos to reboot */
vm_set_suspend_mode(VM_SUSPEND_RESET);
vm_set_suspend_mode(VM_SUSPEND_FULL_RESET);
mevent_notify();
} else {
/* if not need reboot, just loop timer */

6
devicemodel/hw/platform/atkbdc.c
View File

@ -42,6 +42,7 @@
#include "ps2kbd.h"
#include "ps2mouse.h"
#include "vmmapi.h"
#include "mevent.h"
static void
atkbdc_assert_kbd_intr(struct atkbdc_base *base)
@ -359,8 +360,9 @@ atkbdc_sts_ctl_handler(struct vmctx *ctx, int vcpu, int in, int port,
base->status |= KBDS_AUX_BUFFER_FULL |
KBDS_KBD_BUFFER_FULL;
break;
case KBDC_RESET: /* Pulse "reset" line */
error = vm_suspend(ctx, VM_SUSPEND_RESET);
case KBDC_RESET: /* Pulse "cold reset" line */
error = vm_suspend(ctx, VM_SUSPEND_FULL_RESET);
mevent_notify();
assert(error == 0 || errno == EALREADY);
break;
default:

4
devicemodel/include/vmm.h
View File

@ -57,8 +57,10 @@
enum vm_suspend_how {
VM_SUSPEND_NONE,
VM_SUSPEND_RESET,
VM_SUSPEND_SYSTEM_RESET,
VM_SUSPEND_FULL_RESET,
VM_SUSPEND_POWEROFF,
VM_SUSPEND_SUSPEND,
VM_SUSPEND_HALT,
VM_SUSPEND_TRIPLEFAULT,
VM_SUSPEND_LAST