Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/include/asm-sh64/dma-mapping.h b/include/asm-sh64/dma-mapping.h
new file mode 100644
index 0000000..b8d26fe
--- /dev/null
+++ b/include/asm-sh64/dma-mapping.h
@@ -0,0 +1,162 @@
+#ifndef __ASM_SH_DMA_MAPPING_H
+#define __ASM_SH_DMA_MAPPING_H
+
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <asm/scatterlist.h>
+#include <asm/io.h>
+
+struct pci_dev;
+extern void *consistent_alloc(struct pci_dev *hwdev, size_t size,
+ dma_addr_t *dma_handle);
+extern void consistent_free(struct pci_dev *hwdev, size_t size,
+ void *vaddr, dma_addr_t dma_handle);
+
+#define dma_supported(dev, mask) (1)
+
+static inline int dma_set_mask(struct device *dev, u64 mask)
+{
+ if (!dev->dma_mask || !dma_supported(dev, mask))
+ return -EIO;
+
+ *dev->dma_mask = mask;
+
+ return 0;
+}
+
+static inline void *dma_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, int flag)
+{
+ return consistent_alloc(NULL, size, dma_handle);
+}
+
+static inline void dma_free_coherent(struct device *dev, size_t size,
+ void *vaddr, dma_addr_t dma_handle)
+{
+ consistent_free(NULL, size, vaddr, dma_handle);
+}
+
+static inline void dma_cache_sync(void *vaddr, size_t size,
+ enum dma_data_direction dir)
+{
+ dma_cache_wback_inv((unsigned long)vaddr, size);
+}
+
+static inline dma_addr_t dma_map_single(struct device *dev,
+ void *ptr, size_t size,
+ enum dma_data_direction dir)
+{
+#if defined(CONFIG_PCI) && !defined(CONFIG_SH_PCIDMA_NONCOHERENT)
+ if (dev->bus == &pci_bus_type)
+ return virt_to_bus(ptr);
+#endif
+ dma_cache_sync(ptr, size, dir);
+
+ return virt_to_bus(ptr);
+}
+
+#define dma_unmap_single(dev, addr, size, dir) do { } while (0)
+
+static inline int dma_map_sg(struct device *dev, struct scatterlist *sg,
+ int nents, enum dma_data_direction dir)
+{
+ int i;
+
+ for (i = 0; i < nents; i++) {
+#if !defined(CONFIG_PCI) || defined(CONFIG_SH_PCIDMA_NONCOHERENT)
+ dma_cache_sync(page_address(sg[i].page) + sg[i].offset,
+ sg[i].length, dir);
+#endif
+ sg[i].dma_address = page_to_phys(sg[i].page) + sg[i].offset;
+ }
+
+ return nents;
+}
+
+#define dma_unmap_sg(dev, sg, nents, dir) do { } while (0)
+
+static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir)
+{
+ return dma_map_single(dev, page_address(page) + offset, size, dir);
+}
+
+static inline void dma_unmap_page(struct device *dev, dma_addr_t dma_address,
+ size_t size, enum dma_data_direction dir)
+{
+ dma_unmap_single(dev, dma_address, size, dir);
+}
+
+static inline void dma_sync_single(struct device *dev, dma_addr_t dma_handle,
+ size_t size, enum dma_data_direction dir)
+{
+#if defined(CONFIG_PCI) && !defined(CONFIG_SH_PCIDMA_NONCOHERENT)
+ if (dev->bus == &pci_bus_type)
+ return;
+#endif
+ dma_cache_sync(bus_to_virt(dma_handle), size, dir);
+}
+
+static inline void dma_sync_single_range(struct device *dev,
+ dma_addr_t dma_handle,
+ unsigned long offset, size_t size,
+ enum dma_data_direction dir)
+{
+#if defined(CONFIG_PCI) && !defined(CONFIG_SH_PCIDMA_NONCOHERENT)
+ if (dev->bus == &pci_bus_type)
+ return;
+#endif
+ dma_cache_sync(bus_to_virt(dma_handle) + offset, size, dir);
+}
+
+static inline void dma_sync_sg(struct device *dev, struct scatterlist *sg,
+ int nelems, enum dma_data_direction dir)
+{
+ int i;
+
+ for (i = 0; i < nelems; i++) {
+#if !defined(CONFIG_PCI) || defined(CONFIG_SH_PCIDMA_NONCOHERENT)
+ dma_cache_sync(page_address(sg[i].page) + sg[i].offset,
+ sg[i].length, dir);
+#endif
+ sg[i].dma_address = page_to_phys(sg[i].page) + sg[i].offset;
+ }
+}
+
+static inline void dma_sync_single_for_cpu(struct device *dev,
+ dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction dir)
+ __attribute__ ((alias("dma_sync_single")));
+
+static inline void dma_sync_single_for_device(struct device *dev,
+ dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction dir)
+ __attribute__ ((alias("dma_sync_single")));
+
+static inline void dma_sync_sg_for_cpu(struct device *dev,
+ struct scatterlist *sg, int nelems,
+ enum dma_data_direction dir)
+ __attribute__ ((alias("dma_sync_sg")));
+
+static inline void dma_sync_sg_for_device(struct device *dev,
+ struct scatterlist *sg, int nelems,
+ enum dma_data_direction dir)
+ __attribute__ ((alias("dma_sync_sg")));
+
+static inline int dma_get_cache_alignment(void)
+{
+ /*
+ * Each processor family will define its own L1_CACHE_SHIFT,
+ * L1_CACHE_BYTES wraps to this, so this is always safe.
+ */
+ return L1_CACHE_BYTES;
+}
+
+static inline int dma_mapping_error(dma_addr_t dma_addr)
+{
+ return dma_addr == 0;
+}
+
+#endif /* __ASM_SH_DMA_MAPPING_H */
+