From 43bbb49ef7032a8bfdafbd02d0286512af161089 Mon Sep 17 00:00:00 2001 From: Bharata B Rao Date: Mon, 29 Jun 2015 13:50:23 +0530 Subject: pc,pc-dimm: Factor out reusable parts in pc_dimm_plug to a separate routine pc_dimm_plug() has code that will be needed for memory plug handlers in other archs too. Extract code from pc_dimm_plug() into a generic routine pc_dimm_memory_plug() that resides in pc-dimm.c. Also correspondingly refactor re-usable unplug code into pc_dimm_memory_unplug(). Signed-off-by: Bharata B Rao Reviewed-by: David Gibson Reviewed-by: Igor Mammedov Tested-by: Igor Mammedov Signed-off-by: Eduardo Habkost --- hw/i386/pc.c | 66 +++------------------------------------------- hw/mem/pc-dimm.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 83 insertions(+), 63 deletions(-) (limited to 'hw') diff --git a/hw/i386/pc.c b/hw/i386/pc.c index e51c3be..8df1f3e 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -64,7 +64,6 @@ #include "hw/pci/pci_host.h" #include "acpi-build.h" #include "hw/mem/pc-dimm.h" -#include "trace.h" #include "qapi/visitor.h" #include "qapi-visit.h" @@ -1554,86 +1553,29 @@ void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name) static void pc_dimm_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { - int slot; HotplugHandlerClass *hhc; Error *local_err = NULL; PCMachineState *pcms = PC_MACHINE(hotplug_dev); - MachineState *machine = MACHINE(hotplug_dev); PCDIMMDevice *dimm = PC_DIMM(dev); PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm); MemoryRegion *mr = ddc->get_memory_region(dimm); - uint64_t existing_dimms_capacity = 0; uint64_t align = TARGET_PAGE_SIZE; - uint64_t addr; - - addr = object_property_get_int(OBJECT(dimm), PC_DIMM_ADDR_PROP, &local_err); - if (local_err) { - goto out; - } if (memory_region_get_alignment(mr) && pcms->enforce_aligned_dimm) { align = memory_region_get_alignment(mr); } - addr = pc_dimm_get_free_addr(pcms->hotplug_memory.base, - memory_region_size(&pcms->hotplug_memory.mr), - !addr ? NULL : &addr, align, - memory_region_size(mr), &local_err); - if (local_err) { - goto out; - } - - existing_dimms_capacity = pc_existing_dimms_capacity(&local_err); - if (local_err) { - goto out; - } - - if (existing_dimms_capacity + memory_region_size(mr) > - machine->maxram_size - machine->ram_size) { - error_setg(&local_err, "not enough space, currently 0x%" PRIx64 - " in use of total hot pluggable 0x" RAM_ADDR_FMT, - existing_dimms_capacity, - machine->maxram_size - machine->ram_size); - goto out; - } - - object_property_set_int(OBJECT(dev), addr, PC_DIMM_ADDR_PROP, &local_err); - if (local_err) { - goto out; - } - trace_mhp_pc_dimm_assigned_address(addr); - - slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, &local_err); - if (local_err) { - goto out; - } - - slot = pc_dimm_get_free_slot(slot == PC_DIMM_UNASSIGNED_SLOT ? NULL : &slot, - machine->ram_slots, &local_err); - if (local_err) { - goto out; - } - object_property_set_int(OBJECT(dev), slot, PC_DIMM_SLOT_PROP, &local_err); - if (local_err) { - goto out; - } - trace_mhp_pc_dimm_assigned_slot(slot); - if (!pcms->acpi_dev) { error_setg(&local_err, "memory hotplug is not enabled: missing acpi device"); goto out; } - if (kvm_enabled() && !kvm_has_free_slot(machine)) { - error_setg(&local_err, "hypervisor has no free memory slots left"); + pc_dimm_memory_plug(dev, &pcms->hotplug_memory, mr, align, &local_err); + if (local_err) { goto out; } - memory_region_add_subregion(&pcms->hotplug_memory.mr, - addr - pcms->hotplug_memory.base, mr); - vmstate_register_ram(mr, dev); - hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); hhc->plug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); out: @@ -1677,9 +1619,7 @@ static void pc_dimm_unplug(HotplugHandler *hotplug_dev, goto out; } - memory_region_del_subregion(&pcms->hotplug_memory.mr, mr); - vmstate_unregister_ram(mr, dev); - + pc_dimm_memory_unplug(dev, &pcms->hotplug_memory, mr); object_unparent(OBJECT(dev)); out: diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c index e70633d..98971b7 100644 --- a/hw/mem/pc-dimm.c +++ b/hw/mem/pc-dimm.c @@ -23,12 +23,92 @@ #include "qapi/visitor.h" #include "qemu/range.h" #include "sysemu/numa.h" +#include "sysemu/kvm.h" +#include "trace.h" typedef struct pc_dimms_capacity { uint64_t size; Error **errp; } pc_dimms_capacity; +void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms, + MemoryRegion *mr, uint64_t align, Error **errp) +{ + int slot; + MachineState *machine = MACHINE(qdev_get_machine()); + PCDIMMDevice *dimm = PC_DIMM(dev); + Error *local_err = NULL; + uint64_t existing_dimms_capacity = 0; + uint64_t addr; + + addr = object_property_get_int(OBJECT(dimm), PC_DIMM_ADDR_PROP, &local_err); + if (local_err) { + goto out; + } + + addr = pc_dimm_get_free_addr(hpms->base, + memory_region_size(&hpms->mr), + !addr ? NULL : &addr, align, + memory_region_size(mr), &local_err); + if (local_err) { + goto out; + } + + existing_dimms_capacity = pc_existing_dimms_capacity(&local_err); + if (local_err) { + goto out; + } + + if (existing_dimms_capacity + memory_region_size(mr) > + machine->maxram_size - machine->ram_size) { + error_setg(&local_err, "not enough space, currently 0x%" PRIx64 + " in use of total hot pluggable 0x" RAM_ADDR_FMT, + existing_dimms_capacity, + machine->maxram_size - machine->ram_size); + goto out; + } + + object_property_set_int(OBJECT(dev), addr, PC_DIMM_ADDR_PROP, &local_err); + if (local_err) { + goto out; + } + trace_mhp_pc_dimm_assigned_address(addr); + + slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, &local_err); + if (local_err) { + goto out; + } + + slot = pc_dimm_get_free_slot(slot == PC_DIMM_UNASSIGNED_SLOT ? NULL : &slot, + machine->ram_slots, &local_err); + if (local_err) { + goto out; + } + object_property_set_int(OBJECT(dev), slot, PC_DIMM_SLOT_PROP, &local_err); + if (local_err) { + goto out; + } + trace_mhp_pc_dimm_assigned_slot(slot); + + if (kvm_enabled() && !kvm_has_free_slot(machine)) { + error_setg(&local_err, "hypervisor has no free memory slots left"); + goto out; + } + + memory_region_add_subregion(&hpms->mr, addr - hpms->base, mr); + vmstate_register_ram(mr, dev); + +out: + error_propagate(errp, local_err); +} + +void pc_dimm_memory_unplug(DeviceState *dev, MemoryHotplugState *hpms, + MemoryRegion *mr) +{ + memory_region_del_subregion(&hpms->mr, mr); + vmstate_unregister_ram(mr, dev); +} + static int pc_existing_dimms_capacity_internal(Object *obj, void *opaque) { pc_dimms_capacity *cap = opaque; -- cgit v1.1