diff options
| -rw-r--r-- | arch/sparc/include/asm/dma-mapping.h | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/iommu.c | 12 | ||||
| -rw-r--r-- | arch/sparc/kernel/iommu_common.h | 2 | ||||
| -rw-r--r-- | arch/sparc/kernel/pci_sun4v.c | 14 |
4 files changed, 21 insertions, 9 deletions
diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h index 69cc627779f2..b8e8dfcd065d 100644 --- a/arch/sparc/include/asm/dma-mapping.h +++ b/arch/sparc/include/asm/dma-mapping.h @@ -5,8 +5,6 @@ #include <linux/mm.h> #include <linux/dma-debug.h> -#define DMA_ERROR_CODE (~(dma_addr_t)0x0) - #define HAVE_ARCH_DMA_SUPPORTED 1 int dma_supported(struct device *dev, u64 mask); diff --git a/arch/sparc/kernel/iommu.c b/arch/sparc/kernel/iommu.c index c63ba99ca551..dafa316d978d 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 +741,11 @@ 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 const struct dma_map_ops sun4u_dma_ops = { .alloc = dma_4u_alloc_coherent, .free = dma_4u_free_coherent, @@ -750,6 +755,7 @@ 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, + .mapping_error = dma_4u_mapping_error, }; const struct dma_map_ops *dma_ops = &sun4u_dma_ops; diff --git a/arch/sparc/kernel/iommu_common.h b/arch/sparc/kernel/iommu_common.h index 828493329f68..5ea5c192b1d9 100644 --- a/arch/sparc/kernel/iommu_common.h +++ b/arch/sparc/kernel/iommu_common.h @@ -47,4 +47,6 @@ static inline int is_span_boundary(unsigned long entry, return iommu_is_span_boundary(entry, nr, shift, boundary_size); } +#define SPARC_MAPPING_ERROR (~(dma_addr_t)0x0) + #endif /* _IOMMU_COMMON_H */ diff --git a/arch/sparc/kernel/pci_sun4v.c b/arch/sparc/kernel/pci_sun4v.c index 68bec7c97cb8..8e2a56f4c03a 100644 --- a/arch/sparc/kernel/pci_sun4v.c +++ b/arch/sparc/kernel/pci_sun4v.c @@ -412,12 +412,12 @@ static dma_addr_t dma_4v_map_page(struct device *dev, struct page *page, bad: if (printk_ratelimit()) WARN_ON(1); - return DMA_ERROR_CODE; + return SPARC_MAPPING_ERROR; iommu_map_fail: local_irq_restore(flags); iommu_tbl_range_free(tbl, bus_addr, npages, IOMMU_ERROR_CODE); - return DMA_ERROR_CODE; + return SPARC_MAPPING_ERROR; } static void dma_4v_unmap_page(struct device *dev, dma_addr_t bus_addr, @@ -590,7 +590,7 @@ static int dma_4v_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; } @@ -607,7 +607,7 @@ iommu_map_failed: iommu_tbl_range_free(tbl, vaddr, npages, IOMMU_ERROR_CODE); /* XXX demap? XXX */ - s->dma_address = DMA_ERROR_CODE; + s->dma_address = SPARC_MAPPING_ERROR; s->dma_length = 0; } if (s == outs) @@ -669,6 +669,11 @@ static void dma_4v_unmap_sg(struct device *dev, struct scatterlist *sglist, local_irq_restore(flags); } +static int dma_4v_mapping_error(struct device *dev, dma_addr_t dma_addr) +{ + return dma_addr == SPARC_MAPPING_ERROR; +} + static const struct dma_map_ops sun4v_dma_ops = { .alloc = dma_4v_alloc_coherent, .free = dma_4v_free_coherent, @@ -676,6 +681,7 @@ static const struct dma_map_ops sun4v_dma_ops = { .unmap_page = dma_4v_unmap_page, .map_sg = dma_4v_map_sg, .unmap_sg = dma_4v_unmap_sg, + .mapping_error = dma_4v_mapping_error, }; static void pci_sun4v_scan_bus(struct pci_pbm_info *pbm, struct device *parent) |