69387f4915
Convenience function for retrieving the PCIDevice object of the N-th VF. Signed-off-by: Łukasz Gieryk <lukasz.gieryk@linux.intel.com> Reviewed-by: Knut Omang <knuto@ifi.uio.no> Message-Id: <20220217174504.1051716-4-lukasz.maniak@linux.intel.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/*
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* pcie_sriov.h:
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*
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* Implementation of SR/IOV emulation support.
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*
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* Copyright (c) 2015 Knut Omang <knut.omang@oracle.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef QEMU_PCIE_SRIOV_H
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#define QEMU_PCIE_SRIOV_H
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struct PCIESriovPF {
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uint16_t num_vfs; /* Number of virtual functions created */
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uint8_t vf_bar_type[PCI_NUM_REGIONS]; /* Store type for each VF bar */
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const char *vfname; /* Reference to the device type used for the VFs */
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PCIDevice **vf; /* Pointer to an array of num_vfs VF devices */
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};
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struct PCIESriovVF {
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PCIDevice *pf; /* Pointer back to owner physical function */
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uint16_t vf_number; /* Logical VF number of this function */
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};
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void pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset,
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const char *vfname, uint16_t vf_dev_id,
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uint16_t init_vfs, uint16_t total_vfs,
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uint16_t vf_offset, uint16_t vf_stride);
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void pcie_sriov_pf_exit(PCIDevice *dev);
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/* Set up a VF bar in the SR/IOV bar area */
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void pcie_sriov_pf_init_vf_bar(PCIDevice *dev, int region_num,
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uint8_t type, dma_addr_t size);
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/* Instantiate a bar for a VF */
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void pcie_sriov_vf_register_bar(PCIDevice *dev, int region_num,
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MemoryRegion *memory);
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/*
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* Default (minimal) page size support values
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* as required by the SR/IOV standard:
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* 0x553 << 12 = 0x553000 = 4K + 8K + 64K + 256K + 1M + 4M
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*/
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#define SRIOV_SUP_PGSIZE_MINREQ 0x553
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/*
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* Optionally add supported page sizes to the mask of supported page sizes
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* Page size values are interpreted as opt_sup_pgsize << 12.
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*/
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void pcie_sriov_pf_add_sup_pgsize(PCIDevice *dev, uint16_t opt_sup_pgsize);
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/* SR/IOV capability config write handler */
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void pcie_sriov_config_write(PCIDevice *dev, uint32_t address,
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uint32_t val, int len);
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/* Reset SR/IOV VF Enable bit to unregister all VFs */
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void pcie_sriov_pf_disable_vfs(PCIDevice *dev);
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/* Get logical VF number of a VF - only valid for VFs */
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uint16_t pcie_sriov_vf_number(PCIDevice *dev);
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/*
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* Get the physical function that owns this VF.
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* Returns NULL if dev is not a virtual function
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*/
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PCIDevice *pcie_sriov_get_pf(PCIDevice *dev);
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/*
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* Get the n-th VF of this physical function - only valid for PF.
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* Returns NULL if index is invalid
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*/
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PCIDevice *pcie_sriov_get_vf_at_index(PCIDevice *dev, int n);
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#endif /* QEMU_PCIE_SRIOV_H */
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