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cris: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Mikael Starvik <starvik@axis.com> Cc: Jesper Nilsson <jesper.nilsson@axis.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>
This commit is contained in:
Christoph Hellwig
Linus Torvalds
parent
4605f04b28
commit
e20dd88995
@ -54,6 +54,7 @@ config CRIS
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select GENERIC_ATOMIC64
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select HAVE_UID16
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select VIRT_TO_BUS
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select HAVE_DMA_ATTRS
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select ARCH_WANT_IPC_PARSE_VERSION
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select GENERIC_IRQ_SHOW
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select GENERIC_IOMAP
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@ -16,21 +16,18 @@
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#include <linux/gfp.h>
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#include <asm/io.h>
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void *dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t gfp)
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static void *v32_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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void *ret;
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int order = get_order(size);
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/* ignore region specifiers */
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gfp &= ~(__GFP_DMA | __GFP_HIGHMEM);
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if (dma_alloc_from_coherent(dev, size, dma_handle, &ret))
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return ret;
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if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff))
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gfp |= GFP_DMA;
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ret = (void *)__get_free_pages(gfp, order);
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ret = (void *)__get_free_pages(gfp, get_order(size));
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if (ret != NULL) {
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memset(ret, 0, size);
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@ -39,12 +36,45 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
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return ret;
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}
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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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static void v32_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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int order = get_order(size);
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if (!dma_release_from_coherent(dev, order, vaddr))
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free_pages((unsigned long)vaddr, order);
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free_pages((unsigned long)vaddr, get_order(size));
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}
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static inline dma_addr_t v32_dma_map_page(struct device *dev,
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struct page *page, unsigned long offset, size_t size,
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enum dma_data_direction direction,
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struct dma_attrs *attrs)
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{
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return page_to_phys(page) + offset;
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}
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static inline int v32_dma_map_sg(struct device *dev, struct scatterlist *sg,
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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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printk("Map sg\n");
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return nents;
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}
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static inline int v32_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,
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* so we can't guarantee allocations that must be
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* within a tighter range than 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 v32_dma_ops = {
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.alloc = v32_dma_alloc,
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.free = v32_dma_free,
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.map_page = v32_dma_map_page,
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.map_sg = v32_dma_map_sg,
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.dma_supported = v32_dma_supported,
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};
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EXPORT_SYMBOL(v32_dma_ops);
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@ -1,156 +1,22 @@
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/* DMA mapping. Nothing tricky here, just virt_to_phys */
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#ifndef _ASM_CRIS_DMA_MAPPING_H
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#define _ASM_CRIS_DMA_MAPPING_H
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#include <linux/mm.h>
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#include <linux/kernel.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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#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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#ifdef CONFIG_PCI
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#include <asm-generic/dma-coherent.h>
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extern struct dma_map_ops v32_dma_ops;
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void *dma_alloc_coherent(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t flag);
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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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#else
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static inline void *
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dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
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gfp_t flag)
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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();
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return NULL;
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return &v32_dma_ops;
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}
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static inline void
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dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
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dma_addr_t dma_handle)
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#else
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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();
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BUG();
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return NULL;
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}
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#endif
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static inline dma_addr_t
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dma_map_single(struct device *dev, void *ptr, 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 virt_to_phys(ptr);
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}
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static inline void
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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 int
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dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
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enum dma_data_direction direction)
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{
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printk("Map sg\n");
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return nents;
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}
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static inline dma_addr_t
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dma_map_page(struct device *dev, struct page *page, unsigned long offset,
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size_t size, 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_phys(page) + offset;
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}
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static inline void
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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 void
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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(direction == DMA_NONE);
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}
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static inline void
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dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, 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_for_device(struct device *dev, dma_addr_t dma_handle, 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_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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}
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static inline void
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dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
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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_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
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enum dma_data_direction direction)
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{
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}
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static inline int
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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 int
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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,
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* so we can't guarantee allocations that must be
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* within a tighter range than 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 int
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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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}
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#include <asm-generic/dma-mapping-common.h>
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static inline void
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dma_cache_sync(struct device *dev, void *vaddr, size_t size,
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@ -158,15 +24,4 @@ dma_cache_sync(struct device *dev, void *vaddr, size_t size,
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{
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}
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/* drivers/base/dma-mapping.c */
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extern int dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
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void *cpu_addr, dma_addr_t dma_addr, size_t size);
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extern int dma_common_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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#define dma_mmap_coherent(d, v, c, h, s) dma_common_mmap(d, v, c, h, s)
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#define dma_get_sgtable(d, t, v, h, s) dma_common_get_sgtable(d, t, v, h, s)
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#endif
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