diff options
| author | Knut Omang | 2019-02-21 19:13:22 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin | 2019-03-13 03:31:21 +0100 |
| commit | db891a9ba3b5aef52c2735f9b907d4d3678a86f8 (patch) | |
| tree | 88a8ea37c10814e33c823325274657aa161cc169 /include/hw/pci | |
| parent | vhost-user-blk: Add support to get/set inflight buffer (diff) | |
| download | qemu-db891a9ba3b5aef52c2735f9b907d4d3678a86f8.tar.gz qemu-db891a9ba3b5aef52c2735f9b907d4d3678a86f8.tar.xz qemu-db891a9ba3b5aef52c2735f9b907d4d3678a86f8.zip | |
pcie: Add a simple PCIe ACS (Access Control Services) helper function
Implementing an ACS capability on downstream ports and multifunction
endpoints indicates isolation and IOMMU visibility to a finer
granularity. This creates smaller IOMMU groups in the guest and thus
more flexibility in assigning endpoints to guest userspace or an L2
guest.
Signed-off-by: Knut Omang <knut.omang@oracle.com>
Message-Id: <07489975121696f5573b0a92baaf3486ef51e35d.1550768238.git-series.knut.omang@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'include/hw/pci')
| -rw-r--r-- | include/hw/pci/pcie.h | 6 | ||||
| -rw-r--r-- | include/hw/pci/pcie_regs.h | 4 |
2 files changed, 10 insertions, 0 deletions
diff --git a/include/hw/pci/pcie.h b/include/hw/pci/pcie.h index 5b82a0d244..e30334d74d 100644 --- a/include/hw/pci/pcie.h +++ b/include/hw/pci/pcie.h @@ -79,6 +79,9 @@ struct PCIExpressDevice { /* Offset of ATS capability in config space */ uint16_t ats_cap; + + /* ACS */ + uint16_t acs_cap; }; #define COMPAT_PROP_PCP "power_controller_present" @@ -128,6 +131,9 @@ void pcie_add_capability(PCIDevice *dev, uint16_t offset, uint16_t size); void pcie_sync_bridge_lnk(PCIDevice *dev); +void pcie_acs_init(PCIDevice *dev, uint16_t offset); +void pcie_acs_reset(PCIDevice *dev); + void pcie_ari_init(PCIDevice *dev, uint16_t offset, uint16_t nextfn); void pcie_dev_ser_num_init(PCIDevice *dev, uint16_t offset, uint64_t ser_num); void pcie_ats_init(PCIDevice *dev, uint16_t offset); diff --git a/include/hw/pci/pcie_regs.h b/include/hw/pci/pcie_regs.h index ad4e7808b8..1db86b0ec4 100644 --- a/include/hw/pci/pcie_regs.h +++ b/include/hw/pci/pcie_regs.h @@ -175,4 +175,8 @@ typedef enum PCIExpLinkWidth { PCI_ERR_COR_INTERNAL | \ PCI_ERR_COR_HL_OVERFLOW) +/* ACS */ +#define PCI_ACS_VER 0x1 +#define PCI_ACS_SIZEOF 8 + #endif /* QEMU_PCIE_REGS_H */ |