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usr
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src
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linux-headers-6.8.0-36
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include
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xen
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pciif.h
/* SPDX-License-Identifier: MIT */ /* * PCI Backend/Frontend Common Data Structures & Macros * * Author: Ryan Wilson <hap9@epoch.ncsc.mil> */ #ifndef __XEN_PCI_COMMON_H__ #define __XEN_PCI_COMMON_H__ /* Be sure to bump this number if you change this file */ #define XEN_PCI_MAGIC "7" /* xen_pci_sharedinfo flags */ #define _XEN_PCIF_active (0) #define XEN_PCIF_active (1<<_XEN_PCIF_active) #define _XEN_PCIB_AERHANDLER (1) #define XEN_PCIB_AERHANDLER (1<<_XEN_PCIB_AERHANDLER) #define _XEN_PCIB_active (2) #define XEN_PCIB_active (1<<_XEN_PCIB_active) /* xen_pci_op commands */ #define XEN_PCI_OP_conf_read (0) #define XEN_PCI_OP_conf_write (1) #define XEN_PCI_OP_enable_msi (2) #define XEN_PCI_OP_disable_msi (3) #define XEN_PCI_OP_enable_msix (4) #define XEN_PCI_OP_disable_msix (5) #define XEN_PCI_OP_aer_detected (6) #define XEN_PCI_OP_aer_resume (7) #define XEN_PCI_OP_aer_mmio (8) #define XEN_PCI_OP_aer_slotreset (9) /* xen_pci_op error numbers */ #define XEN_PCI_ERR_success (0) #define XEN_PCI_ERR_dev_not_found (-1) #define XEN_PCI_ERR_invalid_offset (-2) #define XEN_PCI_ERR_access_denied (-3) #define XEN_PCI_ERR_not_implemented (-4) /* XEN_PCI_ERR_op_failed - backend failed to complete the operation */ #define XEN_PCI_ERR_op_failed (-5) /* * it should be PAGE_SIZE-sizeof(struct xen_pci_op))/sizeof(struct msix_entry)) * Should not exceed 128 */ #define SH_INFO_MAX_VEC 128 struct xen_msix_entry { uint16_t vector; uint16_t entry; }; struct xen_pci_op { /* IN: what action to perform: XEN_PCI_OP_* */ uint32_t cmd; /* OUT: will contain an error number (if any) from errno.h */ int32_t err; /* IN: which device to touch */ uint32_t domain; /* PCI Domain/Segment */ uint32_t bus; uint32_t devfn; /* IN: which configuration registers to touch */ int32_t offset; int32_t size; /* IN/OUT: Contains the result after a READ or the value to WRITE */ uint32_t value; /* IN: Contains extra infor for this operation */ uint32_t info; /*IN: param for msi-x */ struct xen_msix_entry msix_entries[SH_INFO_MAX_VEC]; }; /*used for pcie aer handling*/ struct xen_pcie_aer_op { /* IN: what action to perform: XEN_PCI_OP_* */ uint32_t cmd; /*IN/OUT: return aer_op result or carry error_detected state as input*/ int32_t err; /* IN: which device to touch */ uint32_t domain; /* PCI Domain/Segment*/ uint32_t bus; uint32_t devfn; }; struct xen_pci_sharedinfo { /* flags - XEN_PCIF_* */ uint32_t flags; struct xen_pci_op op; struct xen_pcie_aer_op aer_op; }; #endif /* __XEN_PCI_COMMON_H__ */
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