/* * CXL CDAT Structure * * Copyright (C) 2021 Avery Design Systems, Inc. * * This work is licensed under the terms of the GNU GPL, version 2 or later. * See the COPYING file in the top-level directory. */ #ifndef CXL_CDAT_H #define CXL_CDAT_H #include "hw/cxl/cxl_pci.h" #include "hw/pci/pcie_doe.h" /* * Reference: * Coherent Device Attribute Table (CDAT) Specification, Rev. 1.03, July. 2022 * Compute Express Link (CXL) Specification, Rev. 3.0, Aug. 2022 */ /* Table Access DOE - CXL r3.0 8.1.11 */ #define CXL_DOE_TABLE_ACCESS 2 #define CXL_DOE_PROTOCOL_CDAT ((CXL_DOE_TABLE_ACCESS << 16) | CXL_VENDOR_ID) /* Read Entry - CXL r3.0 8.1.11.1 */ #define CXL_DOE_TAB_TYPE_CDAT 0 #define CXL_DOE_TAB_ENT_MAX 0xFFFF /* Read Entry Request - CXL r3.0 8.1.11.1 Table 8-13 */ #define CXL_DOE_TAB_REQ 0 typedef struct CDATReq { DOEHeader header; uint8_t req_code; uint8_t table_type; uint16_t entry_handle; } QEMU_PACKED CDATReq; /* Read Entry Response - CXL r3.0 8.1.11.1 Table 8-14 */ #define CXL_DOE_TAB_RSP 0 typedef struct CDATRsp { DOEHeader header; uint8_t rsp_code; uint8_t table_type; uint16_t entry_handle; } QEMU_PACKED CDATRsp; /* CDAT Table Format - CDAT Table 1 */ #define CXL_CDAT_REV 2 typedef struct CDATTableHeader { uint32_t length; uint8_t revision; uint8_t checksum; uint8_t reserved[6]; uint32_t sequence; } QEMU_PACKED CDATTableHeader; /* CDAT Structure Types - CDAT Table 2 */ typedef enum { CDAT_TYPE_DSMAS = 0, CDAT_TYPE_DSLBIS = 1, CDAT_TYPE_DSMSCIS = 2, CDAT_TYPE_DSIS = 3, CDAT_TYPE_DSEMTS = 4, CDAT_TYPE_SSLBIS = 5, } CDATType; typedef struct CDATSubHeader { uint8_t type; uint8_t reserved; uint16_t length; } CDATSubHeader; /* Device Scoped Memory Affinity Structure - CDAT Table 3 */ typedef struct CDATDsmas { CDATSubHeader header; uint8_t DSMADhandle; uint8_t flags; #define CDAT_DSMAS_FLAG_NV (1 << 2) #define CDAT_DSMAS_FLAG_SHAREABLE (1 << 3) #define CDAT_DSMAS_FLAG_HW_COHERENT (1 << 4) #define CDAT_DSMAS_FLAG_DYNAMIC_CAP (1 << 5) uint16_t reserved; uint64_t DPA_base; uint64_t DPA_length; } QEMU_PACKED CDATDsmas; /* Device Scoped Latency and Bandwidth Information Structure - CDAT Table 5 */ typedef struct CDATDslbis { CDATSubHeader header; uint8_t handle; /* Definitions of these fields refer directly to HMAT fields */ uint8_t flags; uint8_t data_type; uint8_t reserved; uint64_t entry_base_unit; uint16_t entry[3]; uint16_t reserved2; } QEMU_PACKED CDATDslbis; /* Device Scoped Memory Side Cache Information Structure - CDAT Table 6 */ typedef struct CDATDsmscis { CDATSubHeader header; uint8_t DSMAS_handle; uint8_t reserved[3]; uint64_t memory_side_cache_size; uint32_t cache_attributes; } QEMU_PACKED CDATDsmscis; /* Device Scoped Initiator Structure - CDAT Table 7 */ typedef struct CDATDsis { CDATSubHeader header; uint8_t flags; uint8_t handle; uint16_t reserved; } QEMU_PACKED CDATDsis; /* Device Scoped EFI Memory Type Structure - CDAT Table 8 */ typedef struct CDATDsemts { CDATSubHeader header; uint8_t DSMAS_handle; uint8_t EFI_memory_type_attr; uint16_t reserved; uint64_t DPA_offset; uint64_t DPA_length; } QEMU_PACKED CDATDsemts; /* Switch Scoped Latency and Bandwidth Information Structure - CDAT Table 9 */ typedef struct CDATSslbisHeader { CDATSubHeader header; uint8_t data_type; uint8_t reserved[3]; uint64_t entry_base_unit; } QEMU_PACKED CDATSslbisHeader; #define CDAT_PORT_ID_USP 0x100 /* Switch Scoped Latency and Bandwidth Entry - CDAT Table 10 */ typedef struct CDATSslbe { uint16_t port_x_id; uint16_t port_y_id; uint16_t latency_bandwidth; uint16_t reserved; } QEMU_PACKED CDATSslbe; typedef struct CDATSslbis { CDATSslbisHeader sslbis_header; CDATSslbe sslbe[]; } QEMU_PACKED CDATSslbis; typedef struct CDATEntry { void *base; uint32_t length; } CDATEntry; typedef struct CDATObject { CDATEntry *entry; int entry_len; int (*build_cdat_table)(CDATSubHeader ***cdat_table, void *priv); void (*free_cdat_table)(CDATSubHeader **cdat_table, int num, void *priv); bool to_update; void *private; char *filename; uint8_t *buf; struct CDATSubHeader **built_buf; int built_buf_len; } CDATObject; #endif /* CXL_CDAT_H */