| 1 | /* |
| 2 | * QEMU CXL Support |
| 3 | * |
| 4 | * Copyright (c) 2020 Intel |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2. See the |
| 7 | * COPYING file in the top-level directory. |
| 8 | */ |
| 9 | |
| 10 | #ifndef CXL_H |
| 11 | #define CXL_H |
| 12 | |
| 13 | |
| 14 | #include "qapi/qapi-types-machine.h" |
| 15 | #include "qapi/qapi-visit-machine.h" |
| 16 | #include "hw/pci/pci_host.h" |
| 17 | #include "cxl_pci.h" |
| 18 | #include "cxl_component.h" |
| 19 | #include "cxl_device.h" |
| 20 | |
| 21 | #define CXL_CACHE_LINE_SIZE 64 |
| 22 | #define CXL_COMPONENT_REG_BAR_IDX 0 |
| 23 | #define CXL_DEVICE_REG_BAR_IDX 2 |
| 24 | |
| 25 | #define CXL_WINDOW_MAX 10 |
| 26 | #define CXL_NUM_EXTENTS_SUPPORTED 512 |
| 27 | |
| 28 | typedef struct PXBCXLDev PXBCXLDev; |
| 29 | |
| 30 | typedef struct CXLFixedWindow { |
| 31 | SysBusDevice parent_obj; |
| 32 | int index; |
| 33 | uint64_t size; |
| 34 | char **targets; |
| 35 | PXBCXLDev *target_hbs[16]; |
| 36 | uint8_t num_targets; |
| 37 | uint8_t enc_int_ways; |
| 38 | uint8_t enc_int_gran; |
| 39 | /* Todo: XOR based interleaving */ |
| 40 | MemoryRegion mr; |
| 41 | hwaddr base; |
| 42 | } CXLFixedWindow; |
| 43 | #define TYPE_CXL_FMW "cxl-fmw" |
| 44 | OBJECT_DECLARE_SIMPLE_TYPE(CXLFixedWindow, CXL_FMW) |
| 45 | |
| 46 | typedef struct CXLState { |
| 47 | bool is_enabled; |
| 48 | MemoryRegion host_mr; |
| 49 | unsigned int next_mr_idx; |
| 50 | CXLFixedMemoryWindowOptionsList *cfmw_list; |
| 51 | } CXLState; |
| 52 | |
| 53 | struct CXLHost { |
| 54 | PCIHostState parent_obj; |
| 55 | |
| 56 | CXLComponentState cxl_cstate; |
| 57 | bool passthrough; |
| 58 | }; |
| 59 | |
| 60 | #define TYPE_PXB_CXL_HOST "pxb-cxl-host" |
| 61 | OBJECT_DECLARE_SIMPLE_TYPE(CXLHost, PXB_CXL_HOST) |
| 62 | |
| 63 | #define TYPE_CXL_USP "cxl-upstream" |
| 64 | |
| 65 | typedef struct CXLUpstreamPort CXLUpstreamPort; |
| 66 | DECLARE_INSTANCE_CHECKER(CXLUpstreamPort, CXL_USP, TYPE_CXL_USP) |
| 67 | CXLComponentState *cxl_usp_to_cstate(CXLUpstreamPort *usp); |
| 68 | |
| 69 | #define TYPE_CXL_DSP "cxl-downstream" |
| 70 | |
| 71 | typedef struct CXLDownstreamPort CXLDownstreamPort; |
| 72 | DECLARE_INSTANCE_CHECKER(CXLDownstreamPort, CXL_DSP, TYPE_CXL_DSP) |
| 73 | |
| 74 | void cfmws_update_non_interleaved(bool commit); |
| 75 | #endif |