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/*
* QEMU CXL Support
*
* Copyright (c) 2020 Intel
*
* This work is licensed under the terms of the GNU GPL, version 2. See the
* COPYING file in the top-level directory.
*/
#ifndef CXL_H
#define CXL_H
#include "qapi/qapi-types-machine.h"
#include "qapi/qapi-visit-machine.h"
#include "hw/pci/pci_host.h"
#include "cxl_pci.h"
#include "cxl_component.h"
#include "cxl_device.h"
#define CXL_CACHE_LINE_SIZE 64
#define CXL_COMPONENT_REG_BAR_IDX 0
#define CXL_DEVICE_REG_BAR_IDX 2
#define CXL_WINDOW_MAX 10
typedef struct PXBCXLDev PXBCXLDev;
typedef struct CXLFixedWindow {
uint64_t size;
char **targets;
PXBCXLDev *target_hbs[16];
uint8_t num_targets;
uint8_t enc_int_ways;
uint8_t enc_int_gran;
/* Todo: XOR based interleaving */
MemoryRegion mr;
hwaddr base;
} CXLFixedWindow;
typedef struct CXLState {
bool is_enabled;
MemoryRegion host_mr;
unsigned int next_mr_idx;
GList *fixed_windows;
CXLFixedMemoryWindowOptionsList *cfmw_list;
} CXLState;
struct CXLHost {
PCIHostState parent_obj;
CXLComponentState cxl_cstate;
bool passthrough;
};
#define TYPE_PXB_CXL_HOST "pxb-cxl-host"
OBJECT_DECLARE_SIMPLE_TYPE(CXLHost, PXB_CXL_HOST)
#define TYPE_CXL_USP "cxl-upstream"
typedef struct CXLUpstreamPort CXLUpstreamPort;
DECLARE_INSTANCE_CHECKER(CXLUpstreamPort, CXL_USP, TYPE_CXL_USP)
CXLComponentState *cxl_usp_to_cstate(CXLUpstreamPort *usp);
#endif
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