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1 | /* |
2 | * pcie_sriov.h: | |
3 | * | |
4 | * Implementation of SR/IOV emulation support. | |
5 | * | |
6 | * Copyright (c) 2015 Knut Omang <knut.omang@oracle.com> | |
7 | * | |
8 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
9 | * See the COPYING file in the top-level directory. | |
10 | * | |
11 | */ | |
12 | ||
13 | #ifndef QEMU_PCIE_SRIOV_H | |
14 | #define QEMU_PCIE_SRIOV_H | |
15 | ||
104a2dd6 MA |
16 | #include "hw/pci/pci.h" |
17 | ||
7c0fa8df KO |
18 | struct PCIESriovPF { |
19 | uint16_t num_vfs; /* Number of virtual functions created */ | |
20 | uint8_t vf_bar_type[PCI_NUM_REGIONS]; /* Store type for each VF bar */ | |
21 | const char *vfname; /* Reference to the device type used for the VFs */ | |
22 | PCIDevice **vf; /* Pointer to an array of num_vfs VF devices */ | |
23 | }; | |
24 | ||
25 | struct PCIESriovVF { | |
26 | PCIDevice *pf; /* Pointer back to owner physical function */ | |
27 | uint16_t vf_number; /* Logical VF number of this function */ | |
28 | }; | |
29 | ||
30 | void pcie_sriov_pf_init(PCIDevice *dev, uint16_t offset, | |
31 | const char *vfname, uint16_t vf_dev_id, | |
32 | uint16_t init_vfs, uint16_t total_vfs, | |
33 | uint16_t vf_offset, uint16_t vf_stride); | |
34 | void pcie_sriov_pf_exit(PCIDevice *dev); | |
35 | ||
36 | /* Set up a VF bar in the SR/IOV bar area */ | |
37 | void pcie_sriov_pf_init_vf_bar(PCIDevice *dev, int region_num, | |
38 | uint8_t type, dma_addr_t size); | |
39 | ||
40 | /* Instantiate a bar for a VF */ | |
41 | void pcie_sriov_vf_register_bar(PCIDevice *dev, int region_num, | |
42 | MemoryRegion *memory); | |
43 | ||
44 | /* | |
45 | * Default (minimal) page size support values | |
46 | * as required by the SR/IOV standard: | |
47 | * 0x553 << 12 = 0x553000 = 4K + 8K + 64K + 256K + 1M + 4M | |
48 | */ | |
49 | #define SRIOV_SUP_PGSIZE_MINREQ 0x553 | |
50 | ||
51 | /* | |
52 | * Optionally add supported page sizes to the mask of supported page sizes | |
53 | * Page size values are interpreted as opt_sup_pgsize << 12. | |
54 | */ | |
55 | void pcie_sriov_pf_add_sup_pgsize(PCIDevice *dev, uint16_t opt_sup_pgsize); | |
56 | ||
57 | /* SR/IOV capability config write handler */ | |
58 | void pcie_sriov_config_write(PCIDevice *dev, uint32_t address, | |
59 | uint32_t val, int len); | |
60 | ||
c8bc4db4 AO |
61 | /* Reset SR/IOV */ |
62 | void pcie_sriov_pf_reset(PCIDevice *dev); | |
7c0fa8df KO |
63 | |
64 | /* Get logical VF number of a VF - only valid for VFs */ | |
65 | uint16_t pcie_sriov_vf_number(PCIDevice *dev); | |
66 | ||
67 | /* | |
68 | * Get the physical function that owns this VF. | |
69 | * Returns NULL if dev is not a virtual function | |
70 | */ | |
71 | PCIDevice *pcie_sriov_get_pf(PCIDevice *dev); | |
72 | ||
69387f49 ŁG |
73 | /* |
74 | * Get the n-th VF of this physical function - only valid for PF. | |
75 | * Returns NULL if index is invalid | |
76 | */ | |
77 | PCIDevice *pcie_sriov_get_vf_at_index(PCIDevice *dev, int n); | |
78 | ||
31180dbd AO |
79 | /* Returns the current number of virtual functions. */ |
80 | uint16_t pcie_sriov_num_vfs(PCIDevice *dev); | |
81 | ||
7c0fa8df | 82 | #endif /* QEMU_PCIE_SRIOV_H */ |