@@ -49,6 +49,7 @@
#define ARM_SPI_BASE 32
#define ACPI_POWER_BUTTON_DEVICE "PWRB"
+#define ACPI_HARDWARE_ERROR_DEVICE "ERRD"
static void acpi_dsdt_add_cpus(Aml *scope, int smp_cpus)
{
@@ -340,7 +341,13 @@ static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap,
Aml *aei = aml_resource_template();
/* Pin 3 for power button */
- const uint32_t pin_list[1] = {3};
+ uint32_t pin_list[1] = {3};
+ aml_append(aei, aml_gpio_int(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH,
+ AML_EXCLUSIVE, AML_PULL_UP, 0, pin_list, 1,
+ "GPO0", NULL, 0));
+
+ /* Pin 4 for hardware error device */
+ pin_list[0] = 4;
aml_append(aei, aml_gpio_int(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH,
AML_EXCLUSIVE, AML_PULL_UP, 0, pin_list, 1,
"GPO0", NULL, 0));
@@ -351,6 +358,13 @@ static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap,
aml_append(method, aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE),
aml_int(0x80)));
aml_append(dev, method);
+
+ /* _E04 is handle for hardware error */
+ method = aml_method("_E04", 0, AML_NOTSERIALIZED);
+ aml_append(method, aml_notify(aml_name(ACPI_HARDWARE_ERROR_DEVICE),
+ aml_int(0x80)));
+ aml_append(dev, method);
+
aml_append(scope, dev);
}
@@ -363,6 +377,20 @@ static void acpi_dsdt_add_power_button(Aml *scope)
aml_append(scope, dev);
}
+static void acpi_dsdt_add_error_device(Aml *scope)
+{
+ Aml *dev = aml_device(ACPI_HARDWARE_ERROR_DEVICE);
+ Aml *method;
+
+ aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C33")));
+ aml_append(dev, aml_name_decl("_UID", aml_int(0)));
+
+ method = aml_method("_STA", 0, AML_NOTSERIALIZED);
+ aml_append(method, aml_return(aml_int(0x0f)));
+ aml_append(dev, method);
+ aml_append(scope, dev);
+}
+
/* RSDP */
static GArray *
build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned xsdt_tbl_offset)
@@ -716,6 +744,7 @@ build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO],
(irqmap[VIRT_GPIO] + ARM_SPI_BASE));
acpi_dsdt_add_power_button(scope);
+ acpi_dsdt_add_error_device(scope);
aml_append(dsdt, scope);
@@ -701,16 +701,27 @@ static void create_rtc(const VirtMachineState *vms, qemu_irq *pic)
}
static DeviceState *gpio_key_dev;
+static DeviceState *gpio_err_dev;
static void virt_powerdown_req(Notifier *n, void *opaque)
{
/* use gpio Pin 3 for power button event */
qemu_set_irq(qdev_get_gpio_in(gpio_key_dev, 0), 1);
}
+static void virt_error_notify_req(Notifier *n, void *opaque)
+{
+ /* use gpio Pin 4 for hardware error event */
+ qemu_set_irq(qdev_get_gpio_in(gpio_err_dev, 0), 1);
+}
+
static Notifier virt_system_powerdown_notifier = {
.notify = virt_powerdown_req
};
+static Notifier virt_hardware_error_notifier = {
+ .notify = virt_error_notify_req
+};
+
static void create_gpio(const VirtMachineState *vms, qemu_irq *pic)
{
char *nodename;
@@ -739,6 +750,10 @@ static void create_gpio(const VirtMachineState *vms, qemu_irq *pic)
gpio_key_dev = sysbus_create_simple("gpio-key", -1,
qdev_get_gpio_in(pl061_dev, 3));
+
+ gpio_err_dev = sysbus_create_simple("gpio-key", -1,
+ qdev_get_gpio_in(pl061_dev, 4));
+
qemu_fdt_add_subnode(vms->fdt, "/gpio-keys");
qemu_fdt_setprop_string(vms->fdt, "/gpio-keys", "compatible", "gpio-keys");
qemu_fdt_setprop_cell(vms->fdt, "/gpio-keys", "#size-cells", 0);
@@ -755,6 +770,9 @@ static void create_gpio(const VirtMachineState *vms, qemu_irq *pic)
/* connect powerdown request */
qemu_register_powerdown_notifier(&virt_system_powerdown_notifier);
+ /* connect hardware error notify request */
+ qemu_register_hardware_error_notifier(&virt_hardware_error_notifier);
+
g_free(nodename);
}
@@ -75,6 +75,7 @@ void qemu_register_wakeup_notifier(Notifier *notifier);
void qemu_system_shutdown_request(ShutdownCause reason);
void qemu_system_powerdown_request(void);
void qemu_register_powerdown_notifier(Notifier *notifier);
+void qemu_register_hardware_error_notifier(Notifier *notifier);
void qemu_system_debug_request(void);
void qemu_system_vmstop_request(RunState reason);
void qemu_system_vmstop_request_prepare(void);
@@ -93,6 +94,8 @@ void qemu_remove_machine_init_done_notifier(Notifier *notify);
void qemu_announce_self(void);
+void qemu_hardware_error_notify(void);
+
extern int autostart;
typedef enum {
@@ -1614,6 +1614,8 @@ static int suspend_requested;
static WakeupReason wakeup_reason;
static NotifierList powerdown_notifiers =
NOTIFIER_LIST_INITIALIZER(powerdown_notifiers);
+static NotifierList hardware_error_notifiers =
+ NOTIFIER_LIST_INITIALIZER(hardware_error_notifiers);
static NotifierList suspend_notifiers =
NOTIFIER_LIST_INITIALIZER(suspend_notifiers);
static NotifierList wakeup_notifiers =
@@ -1850,12 +1852,22 @@ void qemu_register_powerdown_notifier(Notifier *notifier)
notifier_list_add(&powerdown_notifiers, notifier);
}
+void qemu_register_hardware_error_notifier(Notifier *notifier)
+{
+ notifier_list_add(&hardware_error_notifiers, notifier);
+}
+
void qemu_system_debug_request(void)
{
debug_requested = 1;
qemu_notify_event();
}
+void qemu_hardware_error_notify(void)
+{
+ notifier_list_notify(&hardware_error_notifiers, NULL);
+}
+
static bool main_loop_should_exit(void)
{
RunState r;
In ARM platform we implements a notification of error events via a GPIO pin. In this case of GPIO-signaled events, an _AEI object lists the appropriate GPIO pin. GPIO pin 4 is used for hardware error device (PNP0C33), so add _E04 in ACPI DSDT table. When GPIO-pin 4 signaled a events, the guest ACPI driver will receive this notification and handing the error. Signed-off-by: Dongjiu Geng <gengdongjiu@huawei.com> --- 1. Address discussion result about guest APEI notification type for SIGBUS_MCEERR_AO SIGBUS in [1], the discussion conclusion is using GPIO-Signal [1]: https://lists.gnu.org/archive/html/qemu-devel/2017-10/msg03397.html https://lists.gnu.org/archive/html/qemu-devel/2017-10/msg03467.html https://lists.gnu.org/archive/html/qemu-devel/2017-10/msg03601.html https://lists.gnu.org/archive/html/qemu-devel/2017-10/msg03775.html 2. The ASL dump for the GPIO and hardware error device ................ Device (GPO0) { Name (_AEI, ResourceTemplate () // _AEI: ACPI Event Interrupts { ............. GpioInt (Edge, ActiveHigh, Exclusive, PullUp, 0x0000, "GPO0", 0x00, ResourceConsumer, , ) { // Pin list 0x0004 } }) Method (_E04, 0, NotSerialized) // _Exx: Edge-Triggered GPE { Notify (ERRD, 0x80) // Status Change } } Device (ERRD) { Name (_HID, EisaId ("PNP0C33") /* Error Device */) // _HID: Hardware ID Name (_UID, Zero) // _UID: Unique ID Method (_STA, 0, NotSerialized) // _STA: Status { Return (0x0F) } } 3. Below is the guest log when Qemu notifies guest using GPIO-signal after record a CPER [ 504.164899] {1}[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 7 [ 504.166970] {1}[Hardware Error]: event severity: recoverable [ 504.251650] {1}[Hardware Error]: Error 0, type: recoverable [ 504.252974] {1}[Hardware Error]: section_type: memory error [ 504.254380] {1}[Hardware Error]: physical_address: 0x00000000000003ec [ 504.255879] {1}[Hardware Error]: error_type: 3, multi-bit ECC --- hw/arm/virt-acpi-build.c | 31 ++++++++++++++++++++++++++++++- hw/arm/virt.c | 18 ++++++++++++++++++ include/sysemu/sysemu.h | 3 +++ vl.c | 12 ++++++++++++ 4 files changed, 63 insertions(+), 1 deletion(-)