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x86/amd-iommu: Implement protection domain list

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This patch adds code to keep a global list of all protection
domains. This allows to simplify the resume code.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel
2009-11-20 16:44:01 +01:00
parent 601367d76b
commit aeb26f5533
3 changed files with 48 additions and 0 deletions
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8
arch/x86/kernel/amd_iommu_init.c
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@ -141,6 +141,12 @@ LIST_HEAD(amd_iommu_list); /* list of all AMD IOMMUs in the
struct amd_iommu *amd_iommus[MAX_IOMMUS];
int amd_iommus_present;
/*
* List of protection domains - used during resume
*/
LIST_HEAD(amd_iommu_pd_list);
spinlock_t amd_iommu_pd_lock;
/*
* Pointer to the device table which is shared by all AMD IOMMUs
* it is indexed by the PCI device id or the HT unit id and contains
@ -1263,6 +1269,8 @@ static int __init amd_iommu_init(void)
*/
amd_iommu_pd_alloc_bitmap[0] = 1;
spin_lock_init(&amd_iommu_pd_lock);
/*
* now the data structures are allocated and basically initialized
* start the real acpi table scan