Commit 29b68415 authored by Ohad Ben-Cohen's avatar Ohad Ben-Cohen Committed by Joerg Roedel
Browse files

x86: amd_iommu: move to drivers/iommu/ 



This should ease finding similarities with different platforms,
with the intention of solving problems once in a generic framework
which everyone can use.

Compile-tested on x86_64.

Signed-off-by: default avatarOhad Ben-Cohen <ohad@wizery.com>
Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent b10f127e

arch/x86/Kconfig

+0 −28
Original line number Diff line number Diff line
@@ -680,34 +680,6 @@ config CALGARY_IOMMU_ENABLED_BY_DEFAULT 
	  Calgary anyway, pass 'iommu=calgary' on the kernel command line.

	  If unsure, say Y.



config AMD_IOMMU

	bool "AMD IOMMU support"

	select SWIOTLB

	select PCI_MSI

	select PCI_IOV

	select IOMMU_API

	depends on X86_64 && PCI && ACPI

	---help---

	  With this option you can enable support for AMD IOMMU hardware in

	  your system. An IOMMU is a hardware component which provides

	  remapping of DMA memory accesses from devices. With an AMD IOMMU you

	  can isolate the the DMA memory of different devices and protect the

	  system from misbehaving device drivers or hardware.



	  You can find out if your system has an AMD IOMMU if you look into

	  your BIOS for an option to enable it or if you have an IVRS ACPI

	  table.



config AMD_IOMMU_STATS

	bool "Export AMD IOMMU statistics to debugfs"

	depends on AMD_IOMMU

	select DEBUG_FS

	---help---

	  This option enables code in the AMD IOMMU driver to collect various

	  statistics about whats happening in the driver and exports that

	  information to userspace via debugfs.

	  If unsure, say N.



# need this always selected by IOMMU for the VIA workaround

config SWIOTLB

	def_bool y if X86_64

arch/x86/kernel/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -123,7 +123,7 @@ ifeq ($(CONFIG_X86_64),y) 


	obj-$(CONFIG_GART_IOMMU)	+= amd_gart_64.o aperture_64.o

	obj-$(CONFIG_CALGARY_IOMMU)	+= pci-calgary_64.o tce_64.o

	obj-$(CONFIG_AMD_IOMMU)		+= amd_iommu_init.o amd_iommu.o

	obj-$(CONFIG_AMD_IOMMU)		+= amd_iommu_init.o



	obj-$(CONFIG_PCI_MMCONFIG)	+= mmconf-fam10h_64.o

	obj-y				+= vsmp_64.o

drivers/iommu/Kconfig

+29 −0
Original line number Diff line number Diff line
@@ -17,3 +17,32 @@ config MSM_IOMMU 
config IOMMU_PGTABLES_L2

	def_bool y

	depends on MSM_IOMMU && MMU && SMP && CPU_DCACHE_DISABLE=n



# AMD IOMMU support

config AMD_IOMMU

	bool "AMD IOMMU support"

	select SWIOTLB

	select PCI_MSI

	select PCI_IOV

	select IOMMU_API

	depends on X86_64 && PCI && ACPI

	---help---

	  With this option you can enable support for AMD IOMMU hardware in

	  your system. An IOMMU is a hardware component which provides

	  remapping of DMA memory accesses from devices. With an AMD IOMMU you

	  can isolate the the DMA memory of different devices and protect the

	  system from misbehaving device drivers or hardware.



	  You can find out if your system has an AMD IOMMU if you look into

	  your BIOS for an option to enable it or if you have an IVRS ACPI

	  table.



config AMD_IOMMU_STATS

	bool "Export AMD IOMMU statistics to debugfs"

	depends on AMD_IOMMU

	select DEBUG_FS

	---help---

	  This option enables code in the AMD IOMMU driver to collect various

	  statistics about whats happening in the driver and exports that

	  information to userspace via debugfs.

	  If unsure, say N.

drivers/iommu/Makefile

+1 −0
Original line number Diff line number Diff line 
obj-$(CONFIG_IOMMU_API) += iommu.o

obj-$(CONFIG_MSM_IOMMU) += msm_iommu.o msm_iommu_dev.o

obj-$(CONFIG_AMD_IOMMU) += amd_iommu.o