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| author | Joerg Roedel <joerg.roedel@amd.com> | 2008-12-02 18:13:27 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-01-03 14:11:55 +0100 |
| commit | c156e347d6d3c36b6843c3b168eda61b9a02c827 (patch) | |
| tree | d175cd43d1f70e5d10d4f27bf0f5eb2e268ec6fe /arch/x86/kernel/amd_iommu.c | |
| parent | 6d98cd8043c13438e4ca8a9464893f0224198a30 (diff) | |
| download | lwn-c156e347d6d3c36b6843c3b168eda61b9a02c827.tar.gz lwn-c156e347d6d3c36b6843c3b168eda61b9a02c827.zip | |
AMD IOMMU: add domain init function for IOMMU API
Impact: add a generic function for allocation protection domains
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/kernel/amd_iommu.c')
| -rw-r--r-- | arch/x86/kernel/amd_iommu.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 5d3f085289eb..6c0bd49cee5f 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -22,6 +22,9 @@ #include <linux/bitops.h> #include <linux/scatterlist.h> #include <linux/iommu-helper.h> +#ifdef CONFIG_IOMMU_API +#include <linux/iommu.h> +#endif #include <asm/proto.h> #include <asm/iommu.h> #include <asm/gart.h> @@ -1606,4 +1609,31 @@ static void cleanup_domain(struct protection_domain *domain) write_unlock_irqrestore(&amd_iommu_devtable_lock, flags); } +static int amd_iommu_domain_init(struct iommu_domain *dom) +{ + struct protection_domain *domain; + + domain = kzalloc(sizeof(*domain), GFP_KERNEL); + if (!domain) + return -ENOMEM; + + spin_lock_init(&domain->lock); + domain->mode = PAGE_MODE_3_LEVEL; + domain->id = domain_id_alloc(); + if (!domain->id) + goto out_free; + domain->pt_root = (void *)get_zeroed_page(GFP_KERNEL); + if (!domain->pt_root) + goto out_free; + + dom->priv = domain; + + return 0; + +out_free: + kfree(domain); + + return -ENOMEM; +} + #endif |