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Commit e3c495c7 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Add driver stub for AMD IOMMUv2 support 



Add a Kconfig option for the optional driver. Since it is
optional it can be compiled as a module and will only be
loaded when required by another driver.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 399be2f5

drivers/iommu/Kconfig

+8 −0
Original line number Original line Diff line number Diff line
@@ -60,6 +60,14 @@ config AMD_IOMMU_STATS 
	  information to userspace via debugfs.

	  information to userspace via debugfs.

	  If unsure, say N.

	  If unsure, say N.





config AMD_IOMMU_V2

	tristate "AMD IOMMU Version 2 driver (EXPERIMENTAL)"

	depends on AMD_IOMMU && EXPERIMENTAL

	---help---

	  This option enables support for the AMD IOMMUv2 features of the IOMMU

	  hardware. Select this option if you want to use devices that support

	  the the PCI PRI and PASID interface.



# Intel IOMMU support

# Intel IOMMU support

config DMAR_TABLE

config DMAR_TABLE

	bool

	bool

drivers/iommu/Makefile

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

obj-$(CONFIG_IOMMU_API) += iommu.o

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

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

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

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

obj-$(CONFIG_AMD_IOMMU_V2) += amd_iommu_v2.o

obj-$(CONFIG_DMAR_TABLE) += dmar.o

obj-$(CONFIG_DMAR_TABLE) += dmar.o

obj-$(CONFIG_INTEL_IOMMU) += iova.o intel-iommu.o

obj-$(CONFIG_INTEL_IOMMU) += iova.o intel-iommu.o

obj-$(CONFIG_IRQ_REMAP) += intr_remapping.o

obj-$(CONFIG_IRQ_REMAP) += intr_remapping.o

drivers/iommu/amd_iommu_v2.c

0 → 100644
+36 −0
Original line number Original line Diff line number Diff line 
/*

 * Copyright (C) 2010-2012 Advanced Micro Devices, Inc.

 * Author: Joerg Roedel <joerg.roedel@amd.com>

 *

 * This program is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 as published

 * by the Free Software Foundation.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA

 */



#include <linux/module.h>



MODULE_LICENSE("GPL v2");

MODULE_AUTHOR("Joerg Roedel <joerg.roedel@amd.com>");



static int __init amd_iommu_v2_init(void)

{

	pr_info("AMD IOMMUv2 driver by Joerg Roedel <joerg.roedel@amd.com>");



	return 0;

}



static void __exit amd_iommu_v2_exit(void)

{

}



module_init(amd_iommu_v2_init);

module_exit(amd_iommu_v2_exit);