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authorJoerg Roedel <joerg.roedel@amd.com>2011-09-27 15:57:16 +0200
committerJesse Barnes <jbarnes@virtuousgeek.org>2011-10-14 09:05:35 -0700
commit086ac11f6435c9dc2fe5025fc8ea3a1dbca273d6 (patch)
tree29e9445f029b73bac174900cb68d5e1fd2748cef /drivers/pci/Kconfig
parentc320b976d7837c561ce4aa49dfe0a64f0e527ce4 (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/Kconfig13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/pci/Kconfig b/drivers/pci/Kconfig
index fb1e9707f91e..cec66064ee4b 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