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| author | Joerg Roedel <joerg.roedel@amd.com> | 2011-09-27 15:57:16 +0200 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2011-10-14 09:05:35 -0700 |
| commit | 086ac11f6435c9dc2fe5025fc8ea3a1dbca273d6 (patch) | |
| tree | 29e9445f029b73bac174900cb68d5e1fd2748cef /include/linux/pci_regs.h | |
| parent | c320b976d7837c561ce4aa49dfe0a64f0e527ce4 (diff) | |
| download | op-kernel-dev-086ac11f6435c9dc2fe5025fc8ea3a1dbca273d6.zip op-kernel-dev-086ac11f6435c9dc2fe5025fc8ea3a1dbca273d6.tar.gz | |
PCI: Add support for PASID capability
Devices supporting Process Address Space Identifiers
(PASIDs) can use an IOMMU to access multiple IO address
spaces at the same time. A PCIe device indicates support for
this feature by implementing the PASID capability. This
patch adds support for the capability to the Linux kernel.
Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'include/linux/pci_regs.h')
| -rw-r--r-- | include/linux/pci_regs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/pci_regs.h b/include/linux/pci_regs.h index 7fc32af..b5d9657 100644 --- a/include/linux/pci_regs.h +++ b/include/linux/pci_regs.h @@ -675,6 +675,14 @@ #define PCI_PRI_MAX_REQ_OFF 0x08 /* Cap offset for max reqs supported */ #define PCI_PRI_ALLOC_REQ_OFF 0x0c /* Cap offset for max reqs allowed */ +/* PASID capability */ +#define PCI_PASID_CAP 0x1b /* PASID capability ID */ +#define PCI_PASID_CAP_OFF 0x04 /* PASID feature register */ +#define PCI_PASID_CONTROL_OFF 0x06 /* PASID control register */ +#define PCI_PASID_ENABLE 0x01 /* Enable/Supported bit */ +#define PCI_PASID_EXEC 0x02 /* Exec permissions Enable/Supported */ +#define PCI_PASID_PRIV 0x04 /* Priviledge Mode Enable/Support */ + /* Single Root I/O Virtualization */ #define PCI_SRIOV_CAP 0x04 /* SR-IOV Capabilities */ #define PCI_SRIOV_CAP_VFM 0x01 /* VF Migration Capable */ |
