110b7e74bSVasilis Liaskovitis /* 210b7e74bSVasilis Liaskovitis * PC DIMM device 310b7e74bSVasilis Liaskovitis * 410b7e74bSVasilis Liaskovitis * Copyright ProfitBricks GmbH 2012 510b7e74bSVasilis Liaskovitis * Copyright (C) 2013-2014 Red Hat Inc 610b7e74bSVasilis Liaskovitis * 710b7e74bSVasilis Liaskovitis * Authors: 810b7e74bSVasilis Liaskovitis * Vasilis Liaskovitis <vasilis.liaskovitis@profitbricks.com> 910b7e74bSVasilis Liaskovitis * Igor Mammedov <imammedo@redhat.com> 1010b7e74bSVasilis Liaskovitis * 1110b7e74bSVasilis Liaskovitis * This work is licensed under the terms of the GNU GPL, version 2 or later. 1210b7e74bSVasilis Liaskovitis * See the COPYING file in the top-level directory. 1310b7e74bSVasilis Liaskovitis * 1410b7e74bSVasilis Liaskovitis */ 1510b7e74bSVasilis Liaskovitis 1610b7e74bSVasilis Liaskovitis #ifndef QEMU_PC_DIMM_H 1710b7e74bSVasilis Liaskovitis #define QEMU_PC_DIMM_H 1810b7e74bSVasilis Liaskovitis 1910b7e74bSVasilis Liaskovitis #include "exec/memory.h" 2010b7e74bSVasilis Liaskovitis #include "sysemu/hostmem.h" 2110b7e74bSVasilis Liaskovitis #include "hw/qdev.h" 2210b7e74bSVasilis Liaskovitis 2310b7e74bSVasilis Liaskovitis #define TYPE_PC_DIMM "pc-dimm" 2410b7e74bSVasilis Liaskovitis #define PC_DIMM(obj) \ 2510b7e74bSVasilis Liaskovitis OBJECT_CHECK(PCDIMMDevice, (obj), TYPE_PC_DIMM) 2610b7e74bSVasilis Liaskovitis #define PC_DIMM_CLASS(oc) \ 2710b7e74bSVasilis Liaskovitis OBJECT_CLASS_CHECK(PCDIMMDeviceClass, (oc), TYPE_PC_DIMM) 2810b7e74bSVasilis Liaskovitis #define PC_DIMM_GET_CLASS(obj) \ 2910b7e74bSVasilis Liaskovitis OBJECT_GET_CLASS(PCDIMMDeviceClass, (obj), TYPE_PC_DIMM) 3010b7e74bSVasilis Liaskovitis 3110b7e74bSVasilis Liaskovitis #define PC_DIMM_ADDR_PROP "addr" 3210b7e74bSVasilis Liaskovitis #define PC_DIMM_SLOT_PROP "slot" 3310b7e74bSVasilis Liaskovitis #define PC_DIMM_NODE_PROP "node" 3410b7e74bSVasilis Liaskovitis #define PC_DIMM_SIZE_PROP "size" 3510b7e74bSVasilis Liaskovitis #define PC_DIMM_MEMDEV_PROP "memdev" 3610b7e74bSVasilis Liaskovitis 3710b7e74bSVasilis Liaskovitis #define PC_DIMM_UNASSIGNED_SLOT -1 3810b7e74bSVasilis Liaskovitis 3910b7e74bSVasilis Liaskovitis /** 4010b7e74bSVasilis Liaskovitis * PCDIMMDevice: 4110b7e74bSVasilis Liaskovitis * @addr: starting guest physical address, where @PCDIMMDevice is mapped. 4210b7e74bSVasilis Liaskovitis * Default value: 0, means that address is auto-allocated. 4310b7e74bSVasilis Liaskovitis * @node: numa node to which @PCDIMMDevice is attached. 4410b7e74bSVasilis Liaskovitis * @slot: slot number into which @PCDIMMDevice is plugged in. 4510b7e74bSVasilis Liaskovitis * Default value: -1, means that slot is auto-allocated. 4610b7e74bSVasilis Liaskovitis * @hostmem: host memory backend providing memory for @PCDIMMDevice 4710b7e74bSVasilis Liaskovitis */ 4810b7e74bSVasilis Liaskovitis typedef struct PCDIMMDevice { 4910b7e74bSVasilis Liaskovitis /* private */ 5010b7e74bSVasilis Liaskovitis DeviceState parent_obj; 5110b7e74bSVasilis Liaskovitis 5210b7e74bSVasilis Liaskovitis /* public */ 5310b7e74bSVasilis Liaskovitis uint64_t addr; 5410b7e74bSVasilis Liaskovitis uint32_t node; 5510b7e74bSVasilis Liaskovitis int32_t slot; 5610b7e74bSVasilis Liaskovitis HostMemoryBackend *hostmem; 5710b7e74bSVasilis Liaskovitis } PCDIMMDevice; 5810b7e74bSVasilis Liaskovitis 5910b7e74bSVasilis Liaskovitis /** 6010b7e74bSVasilis Liaskovitis * PCDIMMDeviceClass: 61*9f318f8fSXiao Guangrong * @realize: called after common dimm is realized so that the dimm based 62*9f318f8fSXiao Guangrong * devices get the chance to do specified operations. 633c3e88a8SXiao Guangrong * @get_memory_region: returns #MemoryRegion associated with @dimm which 643c3e88a8SXiao Guangrong * is directly mapped into the physical address space of guest 6510b7e74bSVasilis Liaskovitis */ 6610b7e74bSVasilis Liaskovitis typedef struct PCDIMMDeviceClass { 6710b7e74bSVasilis Liaskovitis /* private */ 6810b7e74bSVasilis Liaskovitis DeviceClass parent_class; 6910b7e74bSVasilis Liaskovitis 7010b7e74bSVasilis Liaskovitis /* public */ 71*9f318f8fSXiao Guangrong void (*realize)(PCDIMMDevice *dimm, Error **errp); 7210b7e74bSVasilis Liaskovitis MemoryRegion *(*get_memory_region)(PCDIMMDevice *dimm); 7310b7e74bSVasilis Liaskovitis } PCDIMMDeviceClass; 7410b7e74bSVasilis Liaskovitis 75a7d69ff1SBharata B Rao /** 76a7d69ff1SBharata B Rao * MemoryHotplugState: 7707fcd59dSCao jin * @base: address in guest physical address space where hotplug memory 78a7d69ff1SBharata B Rao * address space begins. 79a7d69ff1SBharata B Rao * @mr: hotplug memory address space container 80a7d69ff1SBharata B Rao */ 81a7d69ff1SBharata B Rao typedef struct MemoryHotplugState { 82adcb4ee6SDavid Gibson hwaddr base; 83a7d69ff1SBharata B Rao MemoryRegion mr; 84a7d69ff1SBharata B Rao } MemoryHotplugState; 85a7d69ff1SBharata B Rao 860b312571SIgor Mammedov uint64_t pc_dimm_get_free_addr(uint64_t address_space_start, 870b312571SIgor Mammedov uint64_t address_space_size, 88d6a9b0b8SMichael S. Tsirkin uint64_t *hint, uint64_t align, uint64_t size, 89d6a9b0b8SMichael S. Tsirkin Error **errp); 900cd03d89SIgor Mammedov 910cd03d89SIgor Mammedov int pc_dimm_get_free_slot(const int *hint, int max_slots, Error **errp); 926f2e2730SIgor Mammedov 936f2e2730SIgor Mammedov int qmp_pc_dimm_device_list(Object *obj, void *opaque); 9437153450SBharata B Rao uint64_t pc_existing_dimms_capacity(Error **errp); 9543bbb49eSBharata B Rao void pc_dimm_memory_plug(DeviceState *dev, MemoryHotplugState *hpms, 96d6a9b0b8SMichael S. Tsirkin MemoryRegion *mr, uint64_t align, Error **errp); 9743bbb49eSBharata B Rao void pc_dimm_memory_unplug(DeviceState *dev, MemoryHotplugState *hpms, 9843bbb49eSBharata B Rao MemoryRegion *mr); 9910b7e74bSVasilis Liaskovitis #endif 100