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Diffstat (limited to 'arch/sparc64/kernel/pci_iommu.c')
-rw-r--r--arch/sparc64/kernel/pci_iommu.c22
1 files changed, 13 insertions, 9 deletions
diff --git a/arch/sparc64/kernel/pci_iommu.c b/arch/sparc64/kernel/pci_iommu.c
index 66712772f49..9e405cbbcb0 100644
--- a/arch/sparc64/kernel/pci_iommu.c
+++ b/arch/sparc64/kernel/pci_iommu.c
@@ -37,17 +37,21 @@
/* Must be invoked under the IOMMU lock. */
static void __iommu_flushall(struct iommu *iommu)
{
- unsigned long tag;
- int entry;
+ if (iommu->iommu_flushinv) {
+ pci_iommu_write(iommu->iommu_flushinv, ~(u64)0);
+ } else {
+ unsigned long tag;
+ int entry;
- tag = iommu->iommu_flush + (0xa580UL - 0x0210UL);
- for (entry = 0; entry < 16; entry++) {
- pci_iommu_write(tag, 0);
- tag += 8;
- }
+ tag = iommu->iommu_flush + (0xa580UL - 0x0210UL);
+ for (entry = 0; entry < 16; entry++) {
+ pci_iommu_write(tag, 0);
+ tag += 8;
+ }
- /* Ensure completion of previous PIO writes. */
- (void) pci_iommu_read(iommu->write_complete_reg);
+ /* Ensure completion of previous PIO writes. */
+ (void) pci_iommu_read(iommu->write_complete_reg);
+ }
}
#define IOPTE_CONSISTENT(CTX) \