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AMD IOMMU: some set_device_domain cleanups 

Remove some magic numbers and split the pte_root using standard
functions.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Joerg Roedel 2008-09-11 10:38:32 +02:00 committed by Ingo Molnar
parent bd60b735c6
commit 38ddf41b19
2 changed files with 8 additions and 4 deletions
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9
arch/x86/kernel/amd_iommu.c
View File

@ -739,12 +739,13 @@ static void set_device_domain(struct amd_iommu *iommu,
u64 pte_root = virt_to_phys(domain->pt_root);
pte_root |= (domain->mode & 0x07) << 9;
pte_root |= IOMMU_PTE_IR | IOMMU_PTE_IW | IOMMU_PTE_P | 2;
pte_root |= (domain->mode & DEV_ENTRY_MODE_MASK)
<< DEV_ENTRY_MODE_SHIFT;
pte_root |= IOMMU_PTE_IR | IOMMU_PTE_IW | IOMMU_PTE_P | IOMMU_PTE_TV;
write_lock_irqsave(&amd_iommu_devtable_lock, flags);
amd_iommu_dev_table[devid].data[0] = pte_root;
amd_iommu_dev_table[devid].data[1] = pte_root >> 32;
amd_iommu_dev_table[devid].data[0] = lower_32_bits(pte_root);
amd_iommu_dev_table[devid].data[1] = upper_32_bits(pte_root);
amd_iommu_dev_table[devid].data[2] = domain->id;
amd_iommu_pd_table[devid] = domain;

3
include/asm-x86/amd_iommu_types.h
View File

@ -130,6 +130,8 @@
#define DEV_ENTRY_NMI_PASS 0xba
#define DEV_ENTRY_LINT0_PASS 0xbe
#define DEV_ENTRY_LINT1_PASS 0xbf
#define DEV_ENTRY_MODE_MASK 0x07
#define DEV_ENTRY_MODE_SHIFT 0x09
/* constants to configure the command buffer */
#define CMD_BUFFER_SIZE 8192
@ -159,6 +161,7 @@
#define IOMMU_MAP_SIZE_L3 (1ULL << 39)
#define IOMMU_PTE_P (1ULL << 0)
#define IOMMU_PTE_TV (1ULL << 1)
#define IOMMU_PTE_U (1ULL << 59)
#define IOMMU_PTE_FC (1ULL << 60)
#define IOMMU_PTE_IR (1ULL << 61)