From: Andrew Jones <drjo...@redhat.com>
This is the ACPI equivalent to "hw/arm/virt: Don't incorrectly claim
architectural timer to be edge-triggered" which fixes the DT for
machine types 2.9 and later.
Signed-off-by: Andrew Jones <drjo...@redhat.com>
Acked-by: Michael S. Tsirkin <m...@redhat.com>
Message-id: 20170102200153.28864-15-drjo...@redhat.com
Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
---
include/hw/acpi/acpi-defs.h | 1 +
hw/arm/virt-acpi-build.c | 20 ++++++++++++++------
2 files changed, 15 insertions(+), 6 deletions(-)
diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
index d15b7e5..d43ec00 100644
--- a/include/hw/acpi/acpi-defs.h
+++ b/include/hw/acpi/acpi-defs.h
@@ -428,6 +428,7 @@ typedef struct AcpiMadtGenericTranslator
AcpiMadtGenericTranslator;
/*
* Generic Timer Description Table (GTDT)
*/
+#define ACPI_GTDT_INTERRUPT_MODE_LEVEL (0 << 0)
#define ACPI_GTDT_INTERRUPT_MODE_EDGE (1 << 0)
#define ACPI_GTDT_CAP_ALWAYS_ON (1 << 2)
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 44b5234..085a611 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -535,25 +535,33 @@ build_mcfg(GArray *table_data, BIOSLinker *linker,
VirtMachineState *vms)
/* GTDT */
static void
-build_gtdt(GArray *table_data, BIOSLinker *linker)
+build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
+ VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
int gtdt_start = table_data->len;
AcpiGenericTimerTable *gtdt;
+ uint32_t irqflags;
+
+ if (vmc->claim_edge_triggered_timers) {
+ irqflags = ACPI_GTDT_INTERRUPT_MODE_EDGE;
+ } else {
+ irqflags = ACPI_GTDT_INTERRUPT_MODE_LEVEL;
+ }
gtdt = acpi_data_push(table_data, sizeof *gtdt);
/* The interrupt values are the same with the device tree when adding 16 */
gtdt->secure_el1_interrupt = cpu_to_le32(ARCH_TIMER_S_EL1_IRQ + 16);
- gtdt->secure_el1_flags = cpu_to_le32(ACPI_GTDT_INTERRUPT_MODE_EDGE);
+ gtdt->secure_el1_flags = cpu_to_le32(irqflags);
gtdt->non_secure_el1_interrupt = cpu_to_le32(ARCH_TIMER_NS_EL1_IRQ + 16);
- gtdt->non_secure_el1_flags = cpu_to_le32(ACPI_GTDT_INTERRUPT_MODE_EDGE |
+ gtdt->non_secure_el1_flags = cpu_to_le32(irqflags |
ACPI_GTDT_CAP_ALWAYS_ON);
gtdt->virtual_timer_interrupt = cpu_to_le32(ARCH_TIMER_VIRT_IRQ + 16);
- gtdt->virtual_timer_flags = cpu_to_le32(ACPI_GTDT_INTERRUPT_MODE_EDGE);
+ gtdt->virtual_timer_flags = cpu_to_le32(irqflags);
gtdt->non_secure_el2_interrupt = cpu_to_le32(ARCH_TIMER_NS_EL2_IRQ + 16);
- gtdt->non_secure_el2_flags = cpu_to_le32(ACPI_GTDT_INTERRUPT_MODE_EDGE);
+ gtdt->non_secure_el2_flags = cpu_to_le32(irqflags);
build_header(linker, table_data,
(void *)(table_data->data + gtdt_start), "GTDT",
@@ -736,7 +744,7 @@ void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables
*tables)
build_madt(tables_blob, tables->linker, vms);
acpi_add_table(table_offsets, tables_blob);
- build_gtdt(tables_blob, tables->linker);
+ build_gtdt(tables_blob, tables->linker, vms);
acpi_add_table(table_offsets, tables_blob);
build_mcfg(tables_blob, tables->linker, vms);
--
2.7.4
