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mn10300: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: David Howells <dhowells@redhat.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Joerg Roedel <jroedel@suse.de> Cc: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -14,6 +14,8 @@ config MN10300
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select OLD_SIGSUSPEND3
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select OLD_SIGACTION
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select HAVE_DEBUG_STACKOVERFLOW
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select ARCH_NO_COHERENT_DMA_MMAP
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select HAVE_DMA_ATTRS
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config AM33_2
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def_bool n
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@ -11,154 +11,14 @@
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#ifndef _ASM_DMA_MAPPING_H
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#define _ASM_DMA_MAPPING_H
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#include <linux/mm.h>
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#include <linux/scatterlist.h>
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#include <asm/cache.h>
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#include <asm/io.h>
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/*
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* See Documentation/DMA-API.txt for the description of how the
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* following DMA API should work.
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*/
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extern struct dma_map_ops mn10300_dma_ops;
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extern void *dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t *dma_handle, int flag);
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extern void dma_free_coherent(struct device *dev, size_t size,
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void *vaddr, dma_addr_t dma_handle);
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#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent((d), (s), (h), (f))
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#define dma_free_noncoherent(d, s, v, h) dma_free_coherent((d), (s), (v), (h))
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static inline
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dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
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enum dma_data_direction direction)
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static inline struct dma_map_ops *get_dma_ops(struct device *dev)
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{
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BUG_ON(direction == DMA_NONE);
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mn10300_dcache_flush_inv();
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return virt_to_bus(ptr);
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}
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static inline
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void dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size,
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enum dma_data_direction direction)
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{
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BUG_ON(direction == DMA_NONE);
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}
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static inline
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int dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents,
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enum dma_data_direction direction)
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{
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struct scatterlist *sg;
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int i;
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BUG_ON(!valid_dma_direction(direction));
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WARN_ON(nents == 0 || sglist[0].length == 0);
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for_each_sg(sglist, sg, nents, i) {
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BUG_ON(!sg_page(sg));
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sg->dma_address = sg_phys(sg);
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}
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mn10300_dcache_flush_inv();
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return nents;
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}
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static inline
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void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
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enum dma_data_direction direction)
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{
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BUG_ON(!valid_dma_direction(direction));
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}
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static inline
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dma_addr_t dma_map_page(struct device *dev, struct page *page,
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unsigned long offset, size_t size,
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enum dma_data_direction direction)
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{
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BUG_ON(direction == DMA_NONE);
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return page_to_bus(page) + offset;
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}
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static inline
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void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
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enum dma_data_direction direction)
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{
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BUG_ON(direction == DMA_NONE);
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}
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static inline
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void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
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size_t size, enum dma_data_direction direction)
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{
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}
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static inline
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void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
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size_t size, enum dma_data_direction direction)
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{
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mn10300_dcache_flush_inv();
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}
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static inline
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void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
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unsigned long offset, size_t size,
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enum dma_data_direction direction)
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{
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}
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static inline void
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dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
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unsigned long offset, size_t size,
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enum dma_data_direction direction)
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{
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mn10300_dcache_flush_inv();
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}
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static inline
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void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
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int nelems, enum dma_data_direction direction)
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{
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}
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static inline
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void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
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int nelems, enum dma_data_direction direction)
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{
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mn10300_dcache_flush_inv();
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}
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static inline
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int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
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{
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return 0;
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}
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static inline
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int dma_supported(struct device *dev, u64 mask)
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{
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/*
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* we fall back to GFP_DMA when the mask isn't all 1s, so we can't
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* guarantee allocations that must be within a tighter range than
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* GFP_DMA
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*/
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if (mask < 0x00ffffff)
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return 0;
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return 1;
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}
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static inline
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int dma_set_mask(struct device *dev, u64 mask)
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{
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if (!dev->dma_mask || !dma_supported(dev, mask))
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return -EIO;
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*dev->dma_mask = mask;
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return 0;
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return &mn10300_dma_ops;
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}
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static inline
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@ -168,19 +28,6 @@ void dma_cache_sync(void *vaddr, size_t size,
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mn10300_dcache_flush_inv();
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}
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/* Not supported for now */
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static inline int dma_mmap_coherent(struct device *dev,
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struct vm_area_struct *vma, void *cpu_addr,
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dma_addr_t dma_addr, size_t size)
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{
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return -EINVAL;
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}
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static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt,
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void *cpu_addr, dma_addr_t dma_addr,
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size_t size)
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{
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return -EINVAL;
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}
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#include <asm-generic/dma-mapping-common.h>
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#endif
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@ -20,8 +20,8 @@
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static unsigned long pci_sram_allocated = 0xbc000000;
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void *dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t *dma_handle, int gfp)
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static void *mn10300_dma_alloc(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs)
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{
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unsigned long addr;
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void *ret;
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@ -61,10 +61,9 @@ done:
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printk("dma_alloc_coherent() = %p [%x]\n", ret, *dma_handle);
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return ret;
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}
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EXPORT_SYMBOL(dma_alloc_coherent);
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void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
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dma_addr_t dma_handle)
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static void mn10300_dma_free(struct device *dev, size_t size, void *vaddr,
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dma_addr_t dma_handle, struct dma_attrs *attrs)
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{
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unsigned long addr = (unsigned long) vaddr & ~0x20000000;
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@ -73,4 +72,60 @@ void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
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free_pages(addr, get_order(size));
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}
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EXPORT_SYMBOL(dma_free_coherent);
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static int mn10300_dma_map_sg(struct device *dev, struct scatterlist *sglist,
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int nents, enum dma_data_direction direction,
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struct dma_attrs *attrs)
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{
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struct scatterlist *sg;
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int i;
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for_each_sg(sglist, sg, nents, i) {
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BUG_ON(!sg_page(sg));
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sg->dma_address = sg_phys(sg);
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}
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mn10300_dcache_flush_inv();
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return nents;
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}
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static dma_addr_t mn10300_dma_map_page(struct device *dev, struct page *page,
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unsigned long offset, size_t size,
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enum dma_data_direction direction, struct dma_attrs *attrs)
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{
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return page_to_bus(page) + offset;
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}
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static void mn10300_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
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size_t size, enum dma_data_direction direction)
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{
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mn10300_dcache_flush_inv();
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}
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static void mn10300_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
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int nelems, enum dma_data_direction direction)
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{
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mn10300_dcache_flush_inv();
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}
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static int mn10300_dma_supported(struct device *dev, u64 mask)
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{
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/*
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* we fall back to GFP_DMA when the mask isn't all 1s, so we can't
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* guarantee allocations that must be within a tighter range than
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* GFP_DMA
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*/
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if (mask < 0x00ffffff)
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return 0;
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return 1;
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}
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struct dma_map_ops mn10300_dma_ops = {
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.alloc = mn10300_dma_alloc,
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.free = mn10300_dma_free,
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.map_page = mn10300_dma_map_page,
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.map_sg = mn10300_dma_map_sg,
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.sync_single_for_device = mn10300_dma_sync_single_for_device,
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.sync_sg_for_device = mn10300_dma_sync_sg_for_device,
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};
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