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| author | Thanos Makatos <thanos.makatos@nutanix.com> | 2022-02-04 13:51:59 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2022-02-04 13:51:59 +0000 |
| commit | 2d1d87016133b6c2f38e4f6a5fca6be5b820653c (patch) | |
| tree | f316e6a045a8c08d9d5ab31f29e96b7034d73ea7 /include | |
| parent | 314ed91fd991756bef2c87ecdf7feff4016c1d40 (diff) | |
| download | libvfio-user-2d1d87016133b6c2f38e4f6a5fca6be5b820653c.zip libvfio-user-2d1d87016133b6c2f38e4f6a5fca6be5b820653c.tar.gz libvfio-user-2d1d87016133b6c2f38e4f6a5fca6be5b820653c.tar.bz2 | |
ignore writes to RO MSI-X registers (#642)
Signed-off-by: Thanos Makatos <thanos.makatos@nutanix.com>
Reviewed-by: John Levon <john.levon@nutanix.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/pci_caps/msix.h | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/include/pci_caps/msix.h b/include/pci_caps/msix.h index 49e0765..36a7de6 100644 --- a/include/pci_caps/msix.h +++ b/include/pci_caps/msix.h @@ -39,23 +39,26 @@ extern "C" { #endif +/* Message Control for MSI-X */ struct mxc { - uint16_t ts:11; - uint16_t reserved:3; - uint16_t fm:1; - uint16_t mxe:1; + uint16_t ts:11; /* RO */ + uint16_t reserved:3; /* read must return 0, write has no effect */ + uint16_t fm:1; /* RW */ + uint16_t mxe:1; /* RW */ } __attribute__ ((packed)); _Static_assert(sizeof(struct mxc) == PCI_MSIX_FLAGS, "bad MXC size"); +/* Table Offset / Table BIR for MSI-X */ struct mtab { - uint32_t tbir:3; - uint32_t to:29; + uint32_t tbir:3; /* RO */ + uint32_t to:29; /* RO */ } __attribute__ ((packed)); _Static_assert(sizeof(struct mtab) == PCI_MSIX_TABLE, "bad MTAB size"); +/* PBA Offset / PBA BIR for MSI-X */ struct mpba { - uint32_t pbir:3; - uint32_t pbao:29; + uint32_t pbir:3; /* RO */ + uint32_t pbao:29; /* RO */ } __attribute__ ((packed)); _Static_assert(sizeof(struct mtab) == PCI_MSIX_PBA - PCI_MSIX_TABLE, "bad MPBA size"); |