diff options
| 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 /drivers/pci/Kconfig | |
| parent | c320b976d7837c561ce4aa49dfe0a64f0e527ce4 (diff) | |
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 'drivers/pci/Kconfig')
| -rw-r--r-- | drivers/pci/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig index fb1e9707f91..cec66064ee4 100644 --- a/drivers/pci/Kconfig +++ b/drivers/pci/Kconfig @@ -94,6 +94,19 @@ config PCI_PRI If unsure, say N. +config PCI_PASID + bool "PCI PASID support" + depends on PCI + select PCI_ATS + help + Process Address Space Identifiers (PASIDs) can be used by PCI devices + to access more than one IO address space at the same time. To make + use of this feature an IOMMU is required which also supports PASIDs. + Select this option if you have such an IOMMU and want to compile the + driver for it into your kernel. + + If unsure, say N. + config PCI_IOAPIC bool depends on PCI |