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Diffstat (limited to 'arch/sparc/kernel/iommu.c')
-rw-r--r--arch/sparc/kernel/iommu.c52
1 files changed, 25 insertions, 27 deletions
diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c
index c63ba99ca551..fcbcc031f615 100644
--- a/arch/sparc/kernel/iommu.c
+++ b/arch/sparc/kernel/iommu.c
@@ -314,7 +314,7 @@ bad:
bad_no_ctx:
if (printk_ratelimit())
WARN_ON(1);
- return DMA_ERROR_CODE;
+ return SPARC_MAPPING_ERROR;
}
static void strbuf_flush(struct strbuf *strbuf, struct iommu *iommu,
@@ -547,7 +547,7 @@ static int dma_4u_map_sg(struct device *dev, struct scatterlist *sglist,
if (outcount < incount) {
outs = sg_next(outs);
- outs->dma_address = DMA_ERROR_CODE;
+ outs->dma_address = SPARC_MAPPING_ERROR;
outs->dma_length = 0;
}
@@ -573,7 +573,7 @@ iommu_map_failed:
iommu_tbl_range_free(&iommu->tbl, vaddr, npages,
IOMMU_ERROR_CODE);
- s->dma_address = DMA_ERROR_CODE;
+ s->dma_address = SPARC_MAPPING_ERROR;
s->dma_length = 0;
}
if (s == outs)
@@ -741,6 +741,26 @@ static void dma_4u_sync_sg_for_cpu(struct device *dev,
spin_unlock_irqrestore(&iommu->lock, flags);
}
+static int dma_4u_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+ return dma_addr == SPARC_MAPPING_ERROR;
+}
+
+static int dma_4u_supported(struct device *dev, u64 device_mask)
+{
+ struct iommu *iommu = dev->archdata.iommu;
+
+ if (device_mask > DMA_BIT_MASK(32))
+ return 0;
+ if ((device_mask & iommu->dma_addr_mask) == iommu->dma_addr_mask)
+ return 1;
+#ifdef CONFIG_PCI
+ if (dev_is_pci(dev))
+ return pci64_dma_supported(to_pci_dev(dev), device_mask);
+#endif
+ return 0;
+}
+
static const struct dma_map_ops sun4u_dma_ops = {
.alloc = dma_4u_alloc_coherent,
.free = dma_4u_free_coherent,
@@ -750,31 +770,9 @@ static const struct dma_map_ops sun4u_dma_ops = {
.unmap_sg = dma_4u_unmap_sg,
.sync_single_for_cpu = dma_4u_sync_single_for_cpu,
.sync_sg_for_cpu = dma_4u_sync_sg_for_cpu,
+ .dma_supported = dma_4u_supported,
+ .mapping_error = dma_4u_mapping_error,
};
const struct dma_map_ops *dma_ops = &sun4u_dma_ops;
EXPORT_SYMBOL(dma_ops);
-
-int dma_supported(struct device *dev, u64 device_mask)
-{
- struct iommu *iommu = dev->archdata.iommu;
- u64 dma_addr_mask = iommu->dma_addr_mask;
-
- if (device_mask > DMA_BIT_MASK(32)) {
- if (iommu->atu)
- dma_addr_mask = iommu->atu->dma_addr_mask;
- else
- return 0;
- }
-
- if ((device_mask & dma_addr_mask) == dma_addr_mask)
- return 1;
-
-#ifdef CONFIG_PCI
- if (dev_is_pci(dev))
- return pci64_dma_supported(to_pci_dev(dev), device_mask);
-#endif
-
- return 0;
-}
-EXPORT_SYMBOL(dma_supported);