c28db9e000
Previously, PXB_CXL_DEVICE, PXB_PCIE_DEVICE and PXB_DEVICE all have PCI_DEVICE as their direct parent but share a common state struct PXBDev. convert_to_pxb() is used to get the PXBDev instance from which ever of these types it is called on. This patch switches to an explicit hierarchy based on shared functionality. To allow use of OBJECT_DECLARE_SIMPLE_TYPE() whilst minimizing code changes, all types are renamed to have the postfix _DEV rather than _DEVICE. The new heirarchy has PXB_CXL_DEV with parent PXB_PCIE_DEV which in turn has parent PXB_DEV which continues to have parent PCI_DEVICE. This allows simple use of PXB_DEV() etc rather than a custom function + removal of duplicated properties and moving the CXL specific elements out of struct PXBDev. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Message-Id: <20230420142750.6950-3-Jonathan.Cameron@huawei.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
/*
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* QEMU CXL Support
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*
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* Copyright (c) 2020 Intel
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See the
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* COPYING file in the top-level directory.
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*/
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#ifndef CXL_H
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#define CXL_H
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#include "qapi/qapi-types-machine.h"
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#include "qapi/qapi-visit-machine.h"
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#include "hw/pci/pci_host.h"
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#include "cxl_pci.h"
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#include "cxl_component.h"
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#include "cxl_device.h"
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#define CXL_COMPONENT_REG_BAR_IDX 0
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#define CXL_DEVICE_REG_BAR_IDX 2
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#define CXL_WINDOW_MAX 10
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typedef struct PXBCXLDev PXBCXLDev;
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typedef struct CXLFixedWindow {
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uint64_t size;
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char **targets;
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PXBCXLDev *target_hbs[8];
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uint8_t num_targets;
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uint8_t enc_int_ways;
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uint8_t enc_int_gran;
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/* Todo: XOR based interleaving */
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MemoryRegion mr;
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hwaddr base;
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} CXLFixedWindow;
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typedef struct CXLState {
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bool is_enabled;
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MemoryRegion host_mr;
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unsigned int next_mr_idx;
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GList *fixed_windows;
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CXLFixedMemoryWindowOptionsList *cfmw_list;
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} CXLState;
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struct CXLHost {
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PCIHostState parent_obj;
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CXLComponentState cxl_cstate;
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bool passthrough;
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};
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#define TYPE_PXB_CXL_HOST "pxb-cxl-host"
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OBJECT_DECLARE_SIMPLE_TYPE(CXLHost, PXB_CXL_HOST)
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#define TYPE_CXL_USP "cxl-upstream"
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typedef struct CXLUpstreamPort CXLUpstreamPort;
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DECLARE_INSTANCE_CHECKER(CXLUpstreamPort, CXL_USP, TYPE_CXL_USP)
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CXLComponentState *cxl_usp_to_cstate(CXLUpstreamPort *usp);
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#endif
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