path: root/include/hw/acpi/ich9.h
diff options
authorPaulo Alcantara <pcacjr@gmail.com>2015-06-28 14:58:56 -0300
committerMichael S. Tsirkin <mst@redhat.com>2015-07-07 13:12:22 +0300
commit920557971b60e53c2f3f22e5d6c620ab1ed411fd (patch)
tree5630d4b1c74b28ba22273d5980ecedcbe367fa38 /include/hw/acpi/ich9.h
parent71ba2f0af398f616e154137d9fdda25c2da01324 (diff)
ich9: add TCO interface emulation
This interface provides some registers within a 32-byte range and can be acessed through PCI-to-LPC bridge interface (PMBASE + 0x60). It's commonly used as a watchdog timer to detect system lockups through SMIs that are generated -- if TCO_EN bit is set -- on every timeout. If NO_REBOOT bit is not set in GCS (General Control and Status register), the system will be resetted upon second timeout if TCO_RLD register wasn't previously written to prevent timeout. This patch adds support to TCO watchdog logic and few other features like mapping NMIs to SMIs (NMI2SMI_EN bit), system intruder detection, etc. are not implemented yet. Signed-off-by: Paulo Alcantara <pcacjr@zytor.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/hw/acpi/ich9.h')
1 files changed, 7 insertions, 1 deletions
diff --git a/include/hw/acpi/ich9.h b/include/hw/acpi/ich9.h
index ac24bbe9a3..345fd8d92b 100644
--- a/include/hw/acpi/ich9.h
+++ b/include/hw/acpi/ich9.h
@@ -25,6 +25,7 @@
#include "hw/acpi/cpu_hotplug.h"
#include "hw/acpi/memory_hotplug.h"
#include "hw/acpi/acpi_dev_interface.h"
+#include "hw/acpi/tco.h"
typedef struct ICH9LPCPMRegs {
@@ -55,10 +56,15 @@ typedef struct ICH9LPCPMRegs {
uint8_t disable_s4;
uint8_t s4_val;
uint8_t smm_enabled;
+ bool enable_tco;
+ TCOIORegs tco_regs;
void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm,
- bool smm_enabled, qemu_irq sci_irq);
+ bool smm_enabled,
+ bool enable_tco,
+ qemu_irq sci_irq);
void ich9_pm_iospace_update(ICH9LPCPMRegs *pm, uint32_t pm_io_base);
extern const VMStateDescription vmstate_ich9_pm;