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Diffstat (limited to 'include/sysemu/numa.h')
-rw-r--r-- | include/sysemu/numa.h | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/include/sysemu/numa.h b/include/sysemu/numa.h new file mode 100644 index 000000000..4173ef2af --- /dev/null +++ b/include/sysemu/numa.h @@ -0,0 +1,113 @@ +#ifndef SYSEMU_NUMA_H +#define SYSEMU_NUMA_H + +#include "qemu/bitmap.h" +#include "qapi/qapi-types-machine.h" +#include "exec/cpu-common.h" + +struct CPUArchId; + +#define MAX_NODES 128 +#define NUMA_NODE_UNASSIGNED MAX_NODES +#define NUMA_DISTANCE_MIN 10 +#define NUMA_DISTANCE_DEFAULT 20 +#define NUMA_DISTANCE_MAX 254 +#define NUMA_DISTANCE_UNREACHABLE 255 + +/* the value of AcpiHmatLBInfo flags */ +enum { + HMAT_LB_MEM_MEMORY = 0, + HMAT_LB_MEM_CACHE_1ST_LEVEL = 1, + HMAT_LB_MEM_CACHE_2ND_LEVEL = 2, + HMAT_LB_MEM_CACHE_3RD_LEVEL = 3, + HMAT_LB_LEVELS /* must be the last entry */ +}; + +/* the value of AcpiHmatLBInfo data type */ +enum { + HMAT_LB_DATA_ACCESS_LATENCY = 0, + HMAT_LB_DATA_READ_LATENCY = 1, + HMAT_LB_DATA_WRITE_LATENCY = 2, + HMAT_LB_DATA_ACCESS_BANDWIDTH = 3, + HMAT_LB_DATA_READ_BANDWIDTH = 4, + HMAT_LB_DATA_WRITE_BANDWIDTH = 5, + HMAT_LB_TYPES /* must be the last entry */ +}; + +#define UINT16_BITS 16 + +struct NodeInfo { + uint64_t node_mem; + struct HostMemoryBackend *node_memdev; + bool present; + bool has_cpu; + uint8_t lb_info_provided; + uint16_t initiator; + uint8_t distance[MAX_NODES]; +}; + +struct NumaNodeMem { + uint64_t node_mem; + uint64_t node_plugged_mem; +}; + +struct HMAT_LB_Data { + uint8_t initiator; + uint8_t target; + uint64_t data; +}; +typedef struct HMAT_LB_Data HMAT_LB_Data; + +struct HMAT_LB_Info { + /* Indicates it's memory or the specified level memory side cache. */ + uint8_t hierarchy; + + /* Present the type of data, access/read/write latency or bandwidth. */ + uint8_t data_type; + + /* The range bitmap of bandwidth for calculating common base */ + uint64_t range_bitmap; + + /* The common base unit for latencies or bandwidths */ + uint64_t base; + + /* Array to store the latencies or bandwidths */ + GArray *list; +}; +typedef struct HMAT_LB_Info HMAT_LB_Info; + +struct NumaState { + /* Number of NUMA nodes */ + int num_nodes; + + /* Allow setting NUMA distance for different NUMA nodes */ + bool have_numa_distance; + + /* Detect if HMAT support is enabled. */ + bool hmat_enabled; + + /* NUMA nodes information */ + NodeInfo nodes[MAX_NODES]; + + /* NUMA nodes HMAT Locality Latency and Bandwidth Information */ + HMAT_LB_Info *hmat_lb[HMAT_LB_LEVELS][HMAT_LB_TYPES]; + + /* Memory Side Cache Information Structure */ + NumaHmatCacheOptions *hmat_cache[MAX_NODES][HMAT_LB_LEVELS]; +}; +typedef struct NumaState NumaState; + +void set_numa_options(MachineState *ms, NumaOptions *object, Error **errp); +void parse_numa_opts(MachineState *ms); +void parse_numa_hmat_lb(NumaState *numa_state, NumaHmatLBOptions *node, + Error **errp); +void parse_numa_hmat_cache(MachineState *ms, NumaHmatCacheOptions *node, + Error **errp); +void numa_complete_configuration(MachineState *ms); +void query_numa_node_mem(NumaNodeMem node_mem[], MachineState *ms); +extern QemuOptsList qemu_numa_opts; +void numa_cpu_pre_plug(const struct CPUArchId *slot, DeviceState *dev, + Error **errp); +bool numa_uses_legacy_mem(void); + +#endif |