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-rw-r--r--hw/watchdog/Makefile.objs1
-rw-r--r--hw/watchdog/watchdog.c10
-rw-r--r--hw/watchdog/wdt_diag288.c130
-rw-r--r--hw/watchdog/wdt_i6300esb.c14
4 files changed, 150 insertions, 5 deletions
diff --git a/hw/watchdog/Makefile.objs b/hw/watchdog/Makefile.objs
index 4b0374a55..72e3ffd93 100644
--- a/hw/watchdog/Makefile.objs
+++ b/hw/watchdog/Makefile.objs
@@ -1,3 +1,4 @@
common-obj-y += watchdog.o
common-obj-$(CONFIG_WDT_IB6300ESB) += wdt_i6300esb.o
common-obj-$(CONFIG_WDT_IB700) += wdt_ib700.o
+common-obj-$(CONFIG_WDT_DIAG288) += wdt_diag288.o
diff --git a/hw/watchdog/watchdog.c b/hw/watchdog/watchdog.c
index 54440c91c..8d4b0eeeb 100644
--- a/hw/watchdog/watchdog.c
+++ b/hw/watchdog/watchdog.c
@@ -27,6 +27,7 @@
#include "sysemu/sysemu.h"
#include "sysemu/watchdog.h"
#include "qapi-event.h"
+#include "hw/nmi.h"
/* Possible values for action parameter. */
#define WDT_RESET 1 /* Hard reset. */
@@ -35,6 +36,7 @@
#define WDT_PAUSE 4 /* Pause. */
#define WDT_DEBUG 5 /* Prints a message and continues running. */
#define WDT_NONE 6 /* Do nothing. */
+#define WDT_NMI 7 /* Inject nmi into the guest */
static int watchdog_action = WDT_RESET;
static QLIST_HEAD(watchdog_list, WatchdogTimerModel) watchdog_list;
@@ -95,6 +97,8 @@ int select_watchdog_action(const char *p)
watchdog_action = WDT_DEBUG;
else if (strcasecmp(p, "none") == 0)
watchdog_action = WDT_NONE;
+ else if (strcasecmp(p, "inject-nmi") == 0)
+ watchdog_action = WDT_NMI;
else
return -1;
@@ -138,5 +142,11 @@ void watchdog_perform_action(void)
case WDT_NONE:
qapi_event_send_watchdog(WATCHDOG_EXPIRATION_ACTION_NONE, &error_abort);
break;
+
+ case WDT_NMI:
+ qapi_event_send_watchdog(WATCHDOG_EXPIRATION_ACTION_INJECT_NMI,
+ &error_abort);
+ inject_nmi();
+ break;
}
}
diff --git a/hw/watchdog/wdt_diag288.c b/hw/watchdog/wdt_diag288.c
new file mode 100644
index 000000000..2a885a447
--- /dev/null
+++ b/hw/watchdog/wdt_diag288.c
@@ -0,0 +1,130 @@
+/*
+ * watchdog device diag288 support
+ *
+ * Copyright IBM, Corp. 2015
+ *
+ * Authors:
+ * Xu Wang <gesaint@linux.vnet.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or (at your
+ * option) any later version. See the COPYING file in the top-level directory.
+ *
+ */
+
+#include "sysemu/watchdog.h"
+#include "hw/sysbus.h"
+#include "qemu/timer.h"
+#include "hw/watchdog/wdt_diag288.h"
+
+static WatchdogTimerModel model = {
+ .wdt_name = TYPE_WDT_DIAG288,
+ .wdt_description = "diag288 device for s390x platform",
+};
+
+static const VMStateDescription vmstate_diag288 = {
+ .name = "vmstate_diag288",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_TIMER_PTR(timer, DIAG288State),
+ VMSTATE_BOOL(enabled, DIAG288State),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void wdt_diag288_reset(DeviceState *dev)
+{
+ DIAG288State *diag288 = DIAG288(dev);
+
+ diag288->enabled = false;
+ timer_del(diag288->timer);
+}
+
+static void diag288_reset(void *opaque)
+{
+ DeviceState *diag288 = opaque;
+
+ wdt_diag288_reset(diag288);
+}
+
+static void diag288_timer_expired(void *dev)
+{
+ qemu_log_mask(CPU_LOG_RESET, "Watchdog timer expired.\n");
+ watchdog_perform_action();
+ wdt_diag288_reset(dev);
+}
+
+static int wdt_diag288_handle_timer(DIAG288State *diag288,
+ uint64_t func, uint64_t timeout)
+{
+ switch (func) {
+ case WDT_DIAG288_INIT:
+ diag288->enabled = true;
+ /* fall through */
+ case WDT_DIAG288_CHANGE:
+ if (!diag288->enabled) {
+ return -1;
+ }
+ timer_mod(diag288->timer,
+ qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
+ timeout * get_ticks_per_sec());
+ break;
+ case WDT_DIAG288_CANCEL:
+ if (!diag288->enabled) {
+ return -1;
+ }
+ diag288->enabled = false;
+ timer_del(diag288->timer);
+ break;
+ default:
+ return -1;
+ }
+
+ return 0;
+}
+
+static void wdt_diag288_realize(DeviceState *dev, Error **errp)
+{
+ DIAG288State *diag288 = DIAG288(dev);
+
+ qemu_register_reset(diag288_reset, diag288);
+ diag288->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, diag288_timer_expired,
+ dev);
+}
+
+static void wdt_diag288_unrealize(DeviceState *dev, Error **errp)
+{
+ DIAG288State *diag288 = DIAG288(dev);
+
+ timer_del(diag288->timer);
+ timer_free(diag288->timer);
+}
+
+static void wdt_diag288_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ DIAG288Class *diag288 = DIAG288_CLASS(klass);
+
+ dc->realize = wdt_diag288_realize;
+ dc->unrealize = wdt_diag288_unrealize;
+ dc->reset = wdt_diag288_reset;
+ set_bit(DEVICE_CATEGORY_MISC, dc->categories);
+ dc->vmsd = &vmstate_diag288;
+ diag288->handle_timer = wdt_diag288_handle_timer;
+}
+
+static const TypeInfo wdt_diag288_info = {
+ .class_init = wdt_diag288_class_init,
+ .parent = TYPE_DEVICE,
+ .name = TYPE_WDT_DIAG288,
+ .instance_size = sizeof(DIAG288State),
+ .class_size = sizeof(DIAG288Class),
+};
+
+static void wdt_diag288_register_types(void)
+{
+ watchdog_add_model(&model);
+ type_register_static(&wdt_diag288_info);
+}
+
+type_init(wdt_diag288_register_types)
diff --git a/hw/watchdog/wdt_i6300esb.c b/hw/watchdog/wdt_i6300esb.c
index 4ebdbb858..cfa2b1be1 100644
--- a/hw/watchdog/wdt_i6300esb.c
+++ b/hw/watchdog/wdt_i6300esb.c
@@ -103,6 +103,10 @@ struct I6300State {
typedef struct I6300State I6300State;
+#define TYPE_WATCHDOG_I6300ESB_DEVICE "i6300esb"
+#define WATCHDOG_I6300ESB_DEVICE(obj) \
+ OBJECT_CHECK(I6300State, (obj), TYPE_WATCHDOG_I6300ESB_DEVICE)
+
/* This function is called when the watchdog has either been enabled
* (hence it starts counting down) or has been keep-alived.
*/
@@ -150,7 +154,7 @@ static void i6300esb_disable_timer(I6300State *d)
static void i6300esb_reset(DeviceState *dev)
{
PCIDevice *pdev = PCI_DEVICE(dev);
- I6300State *d = DO_UPCAST(I6300State, dev, pdev);
+ I6300State *d = WATCHDOG_I6300ESB_DEVICE(pdev);
i6300esb_debug("I6300State = %p\n", d);
@@ -213,7 +217,7 @@ static void i6300esb_timer_expired(void *vp)
static void i6300esb_config_write(PCIDevice *dev, uint32_t addr,
uint32_t data, int len)
{
- I6300State *d = DO_UPCAST(I6300State, dev, dev);
+ I6300State *d = WATCHDOG_I6300ESB_DEVICE(dev);
int old;
i6300esb_debug("addr = %x, data = %x, len = %d\n", addr, data, len);
@@ -241,7 +245,7 @@ static void i6300esb_config_write(PCIDevice *dev, uint32_t addr,
static uint32_t i6300esb_config_read(PCIDevice *dev, uint32_t addr, int len)
{
- I6300State *d = DO_UPCAST(I6300State, dev, dev);
+ I6300State *d = WATCHDOG_I6300ESB_DEVICE(dev);
uint32_t data;
i6300esb_debug ("addr = %x, len = %d\n", addr, len);
@@ -416,7 +420,7 @@ static const VMStateDescription vmstate_i6300esb = {
static void i6300esb_realize(PCIDevice *dev, Error **errp)
{
- I6300State *d = DO_UPCAST(I6300State, dev, dev);
+ I6300State *d = WATCHDOG_I6300ESB_DEVICE(dev);
i6300esb_debug("I6300State = %p\n", d);
@@ -451,7 +455,7 @@ static void i6300esb_class_init(ObjectClass *klass, void *data)
}
static const TypeInfo i6300esb_info = {
- .name = "i6300esb",
+ .name = TYPE_WATCHDOG_I6300ESB_DEVICE,
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(I6300State),
.class_init = i6300esb_class_init,
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-28 09:49:17 +0000