diff options
| author | Igor Mammedov <imammedo@redhat.com> | 2014-01-09 17:36:32 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2014-01-26 13:11:44 +0200 |
| commit | d6610bc2adc19a632cb14fc094378cbf5cd60868 (patch) | |
| tree | a7d8021f8a74f11780b538c04793a63280043331 | |
| parent | 81cea5e7f2aa61c6c5d33d28bceb81276603d3c9 (diff) | |
| download | qemu-d6610bc2adc19a632cb14fc094378cbf5cd60868.tar.gz | |
acpi: ich9: add CPU hotplug handling to Q35 machine
.. use IO port 0cd8-0xcf7 range for CPU present bitmap
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| -rw-r--r-- | docs/specs/acpi_cpu_hotplug.txt | 4 | ||||
| -rw-r--r-- | hw/acpi/ich9.c | 14 | ||||
| -rw-r--r-- | include/hw/acpi/cpu_hotplug_defs.h | 1 | ||||
| -rw-r--r-- | include/hw/acpi/ich9.h | 4 |
4 files changed, 22 insertions, 1 deletions
diff --git a/docs/specs/acpi_cpu_hotplug.txt b/docs/specs/acpi_cpu_hotplug.txt index f6f577457d..340b751a95 100644 --- a/docs/specs/acpi_cpu_hotplug.txt +++ b/docs/specs/acpi_cpu_hotplug.txt @@ -10,7 +10,9 @@ ACPI GPE block (IO ports 0xafe0-0xafe3, byte access): Generic ACPI GPE block. Bit 2 (GPE.2) used to notify CPU hot-add/remove event to ACPI BIOS, via SCI interrupt. -CPU present bitmap (IO port 0xaf00-0xaf1f, 1-byte access): +CPU present bitmap for: + ICH9-LPC (IO port 0x0cd8-0xcf7, 1-byte access) + PIIX-PM (IO port 0xaf00-0xaf1f, 1-byte access) --------------------------------------------------------------- One bit per CPU. Bit position reflects corresponding CPU APIC ID. Read-only. diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c index 30f0df8713..0afac425ec 100644 --- a/hw/acpi/ich9.c +++ b/hw/acpi/ich9.c @@ -185,6 +185,15 @@ static void pm_powerdown_req(Notifier *n, void *opaque) acpi_pm1_evt_power_down(&pm->acpi_regs); } +static void ich9_cpu_added_req(Notifier *n, void *opaque) +{ + ICH9LPCPMRegs *pm = container_of(n, ICH9LPCPMRegs, cpu_added_notifier); + + assert(pm != NULL); + AcpiCpuHotplug_add(&pm->acpi_regs.gpe, &pm->gpe_cpu, CPU(opaque)); + acpi_update_sci(&pm->acpi_regs, pm->irq); +} + void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm, qemu_irq sci_irq) { @@ -210,6 +219,11 @@ void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm, qemu_register_reset(pm_reset, pm); pm->powerdown_notifier.notify = pm_powerdown_req; qemu_register_powerdown_notifier(&pm->powerdown_notifier); + + AcpiCpuHotplug_init(pci_address_space_io(lpc_pci), OBJECT(lpc_pci), + &pm->gpe_cpu, ICH9_CPU_HOTPLUG_IO_BASE); + pm->cpu_added_notifier.notify = ich9_cpu_added_req; + qemu_register_cpu_added_notifier(&pm->cpu_added_notifier); } static void ich9_pm_get_gpe0_blk(Object *obj, Visitor *v, diff --git a/include/hw/acpi/cpu_hotplug_defs.h b/include/hw/acpi/cpu_hotplug_defs.h index c6c4f78413..47a35e3373 100644 --- a/include/hw/acpi/cpu_hotplug_defs.h +++ b/include/hw/acpi/cpu_hotplug_defs.h @@ -18,5 +18,6 @@ */ #define ACPI_CPU_HOTPLUG_STATUS 4 #define ACPI_GPE_PROC_LEN 32 +#define ICH9_CPU_HOTPLUG_IO_BASE 0x0CD8 #endif diff --git a/include/hw/acpi/ich9.h b/include/hw/acpi/ich9.h index 82fcf9f2eb..104f419852 100644 --- a/include/hw/acpi/ich9.h +++ b/include/hw/acpi/ich9.h @@ -22,6 +22,7 @@ #define HW_ACPI_ICH9_H #include "hw/acpi/acpi.h" +#include "hw/acpi/cpu_hotplug.h" typedef struct ICH9LPCPMRegs { /* @@ -42,6 +43,9 @@ typedef struct ICH9LPCPMRegs { uint32_t pm_io_base; Notifier powerdown_notifier; + + AcpiCpuHotplug gpe_cpu; + Notifier cpu_added_notifier; } ICH9LPCPMRegs; void ich9_pm_init(PCIDevice *lpc_pci, ICH9LPCPMRegs *pm, |