#include "qemu/osdep.h"
#include "hw/mem/pc-dimm.h"
#include "hw/mem/nvdimm.h"
+#include "hw/mem/memory-device.h"
#include "qapi/error.h"
-#include "qemu/config-file.h"
#include "qapi/visitor.h"
-#include "qemu/range.h"
#include "sysemu/numa.h"
-#include "sysemu/kvm.h"
#include "trace.h"
-#include "hw/virtio/vhost.h"
-typedef struct pc_dimms_capacity {
- uint64_t size;
- Error **errp;
-} pc_dimms_capacity;
+static int pc_dimm_get_free_slot(const int *hint, int max_slots, Error **errp);
-void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms,
- MemoryRegion *mr, uint64_t align, Error **errp)
+void pc_dimm_pre_plug(PCDIMMDevice *dimm, MachineState *machine,
+ const uint64_t *legacy_align, Error **errp)
{
- int slot;
- MachineState *machine = MACHINE(qdev_get_machine());
- PCDIMMDevice *dimm = PC_DIMM(dev);
- PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm);
- MemoryRegion *vmstate_mr = ddc->get_vmstate_memory_region(dimm);
Error *local_err = NULL;
- uint64_t existing_dimms_capacity = 0;
- uint64_t addr;
-
- addr = object_property_get_uint(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_uint(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;
- }
+ int slot;
+ slot = object_property_get_int(OBJECT(dimm), PC_DIMM_SLOT_PROP,
+ &error_abort);
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;
- }
+ object_property_set_int(OBJECT(dimm), slot, PC_DIMM_SLOT_PROP,
+ &error_abort);
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;
- }
-
- if (!vhost_has_free_slot()) {
- error_setg(&local_err, "a used vhost backend has no free"
- " memory slots left");
- goto out;
- }
-
- memory_region_add_subregion(&hpms->mr, addr - hpms->base, mr);
- vmstate_register_ram(vmstate_mr, dev);
-
+ memory_device_pre_plug(MEMORY_DEVICE(dimm), machine, legacy_align,
+ &local_err);
out:
error_propagate(errp, local_err);
}
-void pc_dimm_memory_unplug(DeviceState *dev, MemoryHotplugState *hpms,
- MemoryRegion *mr)
+void pc_dimm_plug(PCDIMMDevice *dimm, MachineState *machine, Error **errp)
{
- PCDIMMDevice *dimm = PC_DIMM(dev);
PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm);
- MemoryRegion *vmstate_mr = ddc->get_vmstate_memory_region(dimm);
-
- memory_region_del_subregion(&hpms->mr, mr);
- vmstate_unregister_ram(vmstate_mr, dev);
-}
+ MemoryRegion *vmstate_mr = ddc->get_vmstate_memory_region(dimm,
+ &error_abort);
-static int pc_existing_dimms_capacity_internal(Object *obj, void *opaque)
-{
- pc_dimms_capacity *cap = opaque;
- uint64_t *size = &cap->size;
-
- if (object_dynamic_cast(obj, TYPE_PC_DIMM)) {
- DeviceState *dev = DEVICE(obj);
-
- if (dev->realized) {
- (*size) += object_property_get_uint(obj, PC_DIMM_SIZE_PROP,
- cap->errp);
- }
-
- if (cap->errp && *cap->errp) {
- return 1;
- }
- }
- object_child_foreach(obj, pc_existing_dimms_capacity_internal, opaque);
- return 0;
+ memory_device_plug(MEMORY_DEVICE(dimm), machine);
+ vmstate_register_ram(vmstate_mr, DEVICE(dimm));
}
-uint64_t pc_existing_dimms_capacity(Error **errp)
+void pc_dimm_unplug(PCDIMMDevice *dimm, MachineState *machine)
{
- pc_dimms_capacity cap;
-
- cap.size = 0;
- cap.errp = errp;
-
- pc_existing_dimms_capacity_internal(qdev_get_machine(), &cap);
- return cap.size;
-}
+ PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm);
+ MemoryRegion *vmstate_mr = ddc->get_vmstate_memory_region(dimm,
+ &error_abort);
-uint64_t get_plugged_memory_size(void)
-{
- return pc_existing_dimms_capacity(&error_abort);
+ memory_device_unplug(MEMORY_DEVICE(dimm), machine);
+ vmstate_unregister_ram(vmstate_mr, DEVICE(dimm));
}
static int pc_dimm_slot2bitmap(Object *obj, void *opaque)
return 0;
}
-int pc_dimm_get_free_slot(const int *hint, int max_slots, Error **errp)
+static int pc_dimm_get_free_slot(const int *hint, int max_slots, Error **errp)
{
- unsigned long *bitmap = bitmap_new(max_slots);
+ unsigned long *bitmap;
int slot = 0;
+ if (max_slots <= 0) {
+ error_setg(errp, "no slots where allocated, please specify "
+ "the 'slots' option");
+ return slot;
+ }
+
+ bitmap = bitmap_new(max_slots);
object_child_foreach(qdev_get_machine(), pc_dimm_slot2bitmap, bitmap);
/* check if requested slot is not occupied */
return slot;
}
-static gint pc_dimm_addr_sort(gconstpointer a, gconstpointer b)
-{
- PCDIMMDevice *x = PC_DIMM(a);
- PCDIMMDevice *y = PC_DIMM(b);
- Int128 diff = int128_sub(int128_make64(x->addr), int128_make64(y->addr));
-
- if (int128_lt(diff, int128_zero())) {
- return -1;
- } else if (int128_gt(diff, int128_zero())) {
- return 1;
- }
- return 0;
-}
-
-static int pc_dimm_built_list(Object *obj, void *opaque)
-{
- GSList **list = opaque;
-
- if (object_dynamic_cast(obj, TYPE_PC_DIMM)) {
- DeviceState *dev = DEVICE(obj);
- if (dev->realized) { /* only realized DIMMs matter */
- *list = g_slist_insert_sorted(*list, dev, pc_dimm_addr_sort);
- }
- }
-
- object_child_foreach(obj, pc_dimm_built_list, opaque);
- return 0;
-}
-
-MemoryDeviceInfoList *qmp_pc_dimm_device_list(void)
-{
- GSList *dimms = NULL, *item;
- MemoryDeviceInfoList *list = NULL, *prev = NULL;
-
- object_child_foreach(qdev_get_machine(), pc_dimm_built_list, &dimms);
-
- for (item = dimms; item; item = g_slist_next(item)) {
- PCDIMMDevice *dimm = PC_DIMM(item->data);
- Object *obj = OBJECT(dimm);
- MemoryDeviceInfoList *elem = g_new0(MemoryDeviceInfoList, 1);
- MemoryDeviceInfo *info = g_new0(MemoryDeviceInfo, 1);
- PCDIMMDeviceInfo *di = g_new0(PCDIMMDeviceInfo, 1);
- bool is_nvdimm = object_dynamic_cast(obj, TYPE_NVDIMM);
- DeviceClass *dc = DEVICE_GET_CLASS(obj);
- DeviceState *dev = DEVICE(obj);
-
- if (dev->id) {
- di->has_id = true;
- di->id = g_strdup(dev->id);
- }
- di->hotplugged = dev->hotplugged;
- di->hotpluggable = dc->hotpluggable;
- di->addr = dimm->addr;
- di->slot = dimm->slot;
- di->node = dimm->node;
- di->size = object_property_get_uint(obj, PC_DIMM_SIZE_PROP, NULL);
- di->memdev = object_get_canonical_path(OBJECT(dimm->hostmem));
-
- if (!is_nvdimm) {
- info->u.dimm.data = di;
- info->type = MEMORY_DEVICE_INFO_KIND_DIMM;
- } else {
- info->u.nvdimm.data = di;
- info->type = MEMORY_DEVICE_INFO_KIND_NVDIMM;
- }
- elem->value = info;
- elem->next = NULL;
- if (prev) {
- prev->next = elem;
- } else {
- list = elem;
- }
- prev = elem;
- }
-
- g_slist_free(dimms);
-
- return list;
-}
-
-uint64_t pc_dimm_get_free_addr(uint64_t address_space_start,
- uint64_t address_space_size,
- uint64_t *hint, uint64_t align, uint64_t size,
- Error **errp)
-{
- GSList *list = NULL, *item;
- uint64_t new_addr, ret = 0;
- uint64_t address_space_end = address_space_start + address_space_size;
-
- g_assert(QEMU_ALIGN_UP(address_space_start, align) == address_space_start);
-
- if (!address_space_size) {
- error_setg(errp, "memory hotplug is not enabled, "
- "please add maxmem option");
- goto out;
- }
-
- if (hint && QEMU_ALIGN_UP(*hint, align) != *hint) {
- error_setg(errp, "address must be aligned to 0x%" PRIx64 " bytes",
- align);
- goto out;
- }
-
- if (QEMU_ALIGN_UP(size, align) != size) {
- error_setg(errp, "backend memory size must be multiple of 0x%"
- PRIx64, align);
- goto out;
- }
-
- assert(address_space_end > address_space_start);
- object_child_foreach(qdev_get_machine(), pc_dimm_built_list, &list);
-
- if (hint) {
- new_addr = *hint;
- } else {
- new_addr = address_space_start;
- }
-
- /* find address range that will fit new DIMM */
- for (item = list; item; item = g_slist_next(item)) {
- PCDIMMDevice *dimm = item->data;
- uint64_t dimm_size = object_property_get_uint(OBJECT(dimm),
- PC_DIMM_SIZE_PROP,
- errp);
- if (errp && *errp) {
- goto out;
- }
-
- if (ranges_overlap(dimm->addr, dimm_size, new_addr, size)) {
- if (hint) {
- DeviceState *d = DEVICE(dimm);
- error_setg(errp, "address range conflicts with '%s'", d->id);
- goto out;
- }
- new_addr = QEMU_ALIGN_UP(dimm->addr + dimm_size, align);
- }
- }
- ret = new_addr;
-
- if (new_addr < address_space_start) {
- error_setg(errp, "can't add memory [0x%" PRIx64 ":0x%" PRIx64
- "] at 0x%" PRIx64, new_addr, size, address_space_start);
- } else if ((new_addr + size) > address_space_end) {
- error_setg(errp, "can't add memory [0x%" PRIx64 ":0x%" PRIx64
- "] beyond 0x%" PRIx64, new_addr, size, address_space_end);
- }
-
-out:
- g_slist_free(list);
- return ret;
-}
-
static Property pc_dimm_properties[] = {
DEFINE_PROP_UINT64(PC_DIMM_ADDR_PROP, PCDIMMDevice, addr, 0),
DEFINE_PROP_UINT32(PC_DIMM_NODE_PROP, PCDIMMDevice, node, 0),
static void pc_dimm_get_size(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
+ Error *local_err = NULL;
uint64_t value;
- MemoryRegion *mr;
- PCDIMMDevice *dimm = PC_DIMM(obj);
- PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(obj);
- mr = ddc->get_memory_region(dimm, errp);
- if (!mr) {
+ value = memory_device_get_region_size(MEMORY_DEVICE(obj), &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
return;
}
- value = memory_region_size(mr);
visit_type_uint64(v, name, &value, errp);
}
return NULL;
}
- return host_memory_backend_get_memory(dimm->hostmem, errp);
+ return host_memory_backend_get_memory(dimm->hostmem);
+}
+
+static uint64_t pc_dimm_md_get_addr(const MemoryDeviceState *md)
+{
+ const PCDIMMDevice *dimm = PC_DIMM(md);
+
+ return dimm->addr;
+}
+
+static void pc_dimm_md_set_addr(MemoryDeviceState *md, uint64_t addr,
+ Error **errp)
+{
+ object_property_set_uint(OBJECT(md), addr, PC_DIMM_ADDR_PROP, errp);
}
-static MemoryRegion *pc_dimm_get_vmstate_memory_region(PCDIMMDevice *dimm)
+static MemoryRegion *pc_dimm_md_get_memory_region(MemoryDeviceState *md,
+ Error **errp)
{
- return host_memory_backend_get_memory(dimm->hostmem, &error_abort);
+ return pc_dimm_get_memory_region(PC_DIMM(md), errp);
+}
+
+static void pc_dimm_md_fill_device_info(const MemoryDeviceState *md,
+ MemoryDeviceInfo *info)
+{
+ PCDIMMDeviceInfo *di = g_new0(PCDIMMDeviceInfo, 1);
+ const DeviceClass *dc = DEVICE_GET_CLASS(md);
+ const PCDIMMDevice *dimm = PC_DIMM(md);
+ const DeviceState *dev = DEVICE(md);
+
+ if (dev->id) {
+ di->has_id = true;
+ di->id = g_strdup(dev->id);
+ }
+ di->hotplugged = dev->hotplugged;
+ di->hotpluggable = dc->hotpluggable;
+ di->addr = dimm->addr;
+ di->slot = dimm->slot;
+ di->node = dimm->node;
+ di->size = object_property_get_uint(OBJECT(dimm), PC_DIMM_SIZE_PROP,
+ NULL);
+ di->memdev = object_get_canonical_path(OBJECT(dimm->hostmem));
+
+ if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
+ info->u.nvdimm.data = di;
+ info->type = MEMORY_DEVICE_INFO_KIND_NVDIMM;
+ } else {
+ info->u.dimm.data = di;
+ info->type = MEMORY_DEVICE_INFO_KIND_DIMM;
+ }
}
static void pc_dimm_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
PCDIMMDeviceClass *ddc = PC_DIMM_CLASS(oc);
+ MemoryDeviceClass *mdc = MEMORY_DEVICE_CLASS(oc);
dc->realize = pc_dimm_realize;
dc->unrealize = pc_dimm_unrealize;
dc->props = pc_dimm_properties;
dc->desc = "DIMM memory module";
- ddc->get_memory_region = pc_dimm_get_memory_region;
- ddc->get_vmstate_memory_region = pc_dimm_get_vmstate_memory_region;
+ ddc->get_vmstate_memory_region = pc_dimm_get_memory_region;
+
+ mdc->get_addr = pc_dimm_md_get_addr;
+ mdc->set_addr = pc_dimm_md_set_addr;
+ /* for a dimm plugged_size == region_size */
+ mdc->get_plugged_size = memory_device_get_region_size;
+ mdc->get_memory_region = pc_dimm_md_get_memory_region;
+ mdc->fill_device_info = pc_dimm_md_fill_device_info;
}
static TypeInfo pc_dimm_info = {
.instance_init = pc_dimm_init,
.class_init = pc_dimm_class_init,
.class_size = sizeof(PCDIMMDeviceClass),
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_MEMORY_DEVICE },
+ { }
+ },
};
static void pc_dimm_register_types(void)
projects / mirror_qemu.git / blobdiff