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| author | Joerg Roedel <joerg.roedel@amd.com> | 2011-11-09 15:31:15 +0400 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2011-12-12 18:19:07 +0400 |
| commit | e3c495c74bc008a5c3671bf3411bc7f5382fa58f (patch) | |
| tree | c0557712e92cbfe7358ede7ad8c79862ae7a538f | |
| parent | 399be2f51979aaf4e3391d98d11e3aeaac7633a4 (diff) | |
| download | linux-e3c495c74bc008a5c3671bf3411bc7f5382fa58f.tar.xz | |
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: Joerg Roedel <joerg.roedel@amd.com>
| -rw-r--r-- | drivers/iommu/Kconfig | 8 | ||||
| -rw-r--r-- | drivers/iommu/Makefile | 1 | ||||
| -rw-r--r-- | drivers/iommu/amd_iommu_v2.c | 36 |
3 files changed, 45 insertions, 0 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index 220dfc24b311..e608a36bb0b1 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -60,6 +60,14 @@ config AMD_IOMMU_STATS information to userspace via debugfs. 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 config DMAR_TABLE bool diff --git a/drivers/iommu/Makefile b/drivers/iommu/Makefile index 2f4448794bc7..0e36b4934aff 100644 --- a/drivers/iommu/Makefile +++ b/drivers/iommu/Makefile @@ -1,6 +1,7 @@ obj-$(CONFIG_IOMMU_API) += iommu.o obj-$(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_V2) += amd_iommu_v2.o obj-$(CONFIG_DMAR_TABLE) += dmar.o obj-$(CONFIG_INTEL_IOMMU) += iova.o intel-iommu.o obj-$(CONFIG_IRQ_REMAP) += intr_remapping.o diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c new file mode 100644 index 000000000000..a19e07d11d12 --- /dev/null +++ b/drivers/iommu/amd_iommu_v2.c @@ -0,0 +1,36 @@ +/* + * 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); |