Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-02 10:11:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

Intel-IOMMU, intr-remap: set the whole 128bits of irte when modify/free it

Browse Source 
Interrupt remapping table entry is 128bits. Currently, it only sets low
64bits of irte in modify_irte and free_irte. This ignores high 64bits
setting of irte, that means source-id setting will be ignored. This patch
sets the whole 128bits of irte when modify/free it. Following source-id
checking patch depends on this.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Weidong Han 2009-05-23 00:41:14 +08:00 committed by David Woodhouse
parent 2c2e2c389d
commit c4658b4e77
1 changed files with 26 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
drivers/pci/intr_remapping.c
View File

@ -314,7 +314,8 @@ int modify_irte(int irq, struct irte *irte_modified)
index = irq_iommu->irte_index + irq_iommu->sub_handle;
irte = &iommu->ir_table->base[index];
set_64bit((unsigned long *)irte, irte_modified->low);
set_64bit((unsigned long *)&irte->low, irte_modified->low);
set_64bit((unsigned long *)&irte->high, irte_modified->high);
__iommu_flush_cache(iommu, irte, sizeof(*irte));
rc = qi_flush_iec(iommu, index, 0);
@ -369,12 +370,32 @@ struct intel_iommu *map_dev_to_ir(struct pci_dev *dev)
return drhd->iommu;
}
static int clear_entries(struct irq_2_iommu *irq_iommu)
{
struct irte *start, *entry, *end;
struct intel_iommu *iommu;
int index;
if (irq_iommu->sub_handle)
return 0;
iommu = irq_iommu->iommu;
index = irq_iommu->irte_index + irq_iommu->sub_handle;
start = iommu->ir_table->base + index;
end = start + (1 << irq_iommu->irte_mask);
for (entry = start; entry < end; entry++) {
set_64bit((unsigned long *)&entry->low, 0);
set_64bit((unsigned long *)&entry->high, 0);
}
return qi_flush_iec(iommu, index, irq_iommu->irte_mask);
}
int free_irte(int irq)
{
int rc = 0;
int index, i;
struct irte *irte;
struct intel_iommu *iommu;
struct irq_2_iommu *irq_iommu;
unsigned long flags;
@ -385,16 +406,7 @@ int free_irte(int irq)
return -1;
}
iommu = irq_iommu->iommu;
index = irq_iommu->irte_index + irq_iommu->sub_handle;
irte = &iommu->ir_table->base[index];
if (!irq_iommu->sub_handle) {
for (i = 0; i < (1 << irq_iommu->irte_mask); i++)
set_64bit((unsigned long *)(irte + i), 0);
rc = qi_flush_iec(iommu, index, irq_iommu->irte_mask);
}
rc = clear_entries(irq_iommu);
irq_iommu->iommu = NULL;
irq_iommu->irte_index = 0;