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/*
* pcie_sriov.h:
*
* Implementation of SR/IOV emulation support.
*
* Copyright (c) 2015 Knut Omang <knut.omang@oracle.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef QEMU_PCIE_SRIOV_H
#define QEMU_PCIE_SRIOV_H
struct PCIESriovPF {
uint16_t num_vfs; /* Number of virtual functions created */
uint8_t vf_bar_type[PCI_NUM_REGIONS]; /* Store type for each VF bar */
const char *vfname; /* Reference to the device type used for the VFs */
PCIDevice **vf; /* Pointer to an array of num_vfs VF devices */
};
struct PCIESriovVF {
PCIDevice *pf; /* Pointer back to owner physical function */
uint16_t vf_number; /* Logical VF number of this function */
};
void pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset,
const char *vfname, uint16_t vf_dev_id,
uint16_t init_vfs, uint16_t total_vfs,
uint16_t vf_offset, uint16_t vf_stride);
void pcie_sriov_pf_exit(PCIDevice *dev);
/* Set up a VF bar in the SR/IOV bar area */
void pcie_sriov_pf_init_vf_bar(PCIDevice *dev, int region_num,
uint8_t type, dma_addr_t size);
/* Instantiate a bar for a VF */
void pcie_sriov_vf_register_bar(PCIDevice *dev, int region_num,
MemoryRegion *memory);
/*
* Default (minimal) page size support values
* as required by the SR/IOV standard:
* 0x553 << 12 = 0x553000 = 4K + 8K + 64K + 256K + 1M + 4M
*/
#define SRIOV_SUP_PGSIZE_MINREQ 0x553
/*
* Optionally add supported page sizes to the mask of supported page sizes
* Page size values are interpreted as opt_sup_pgsize << 12.
*/
void pcie_sriov_pf_add_sup_pgsize(PCIDevice *dev, uint16_t opt_sup_pgsize);
/* SR/IOV capability config write handler */
void pcie_sriov_config_write(PCIDevice *dev, uint32_t address,
uint32_t val, int len);
/* Reset SR/IOV VF Enable bit to unregister all VFs */
void pcie_sriov_pf_disable_vfs(PCIDevice *dev);
/* Get logical VF number of a VF - only valid for VFs */
uint16_t pcie_sriov_vf_number(PCIDevice *dev);
/*
* Get the physical function that owns this VF.
* Returns NULL if dev is not a virtual function
*/
PCIDevice *pcie_sriov_get_pf(PCIDevice *dev);
/*
* Get the n-th VF of this physical function - only valid for PF.
* Returns NULL if index is invalid
*/
PCIDevice *pcie_sriov_get_vf_at_index(PCIDevice *dev, int n);
/* Returns the current number of virtual functions. */
uint16_t pcie_sriov_num_vfs(PCIDevice *dev);
#endif /* QEMU_PCIE_SRIOV_H */
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