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2024-05-10 748e4f3d702def1a4bff191e0cf93b6a05340f01

 kernel/arch/sparc/include/asm/dma.h
..
..
@@ -91,54 +91,10 @@
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 #endif
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 #ifdef CONFIG_SPARC32
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-
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-/* Routines for data transfer buffers. */
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 struct device;
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-struct scatterlist;
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-struct sparc32_dma_ops {
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-	__u32 (*get_scsi_one)(struct device *, char *, unsigned long);
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-	void (*get_scsi_sgl)(struct device *, struct scatterlist *, int);
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-	void (*release_scsi_one)(struct device *, __u32, unsigned long);
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-	void (*release_scsi_sgl)(struct device *, struct scatterlist *,int);
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-#ifdef CONFIG_SBUS
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-	int (*map_dma_area)(struct device *, dma_addr_t *, unsigned long, unsigned long, int);
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-	void (*unmap_dma_area)(struct device *, unsigned long, int);
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-#endif
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-};
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-extern const struct sparc32_dma_ops *sparc32_dma_ops;
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-
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-#define mmu_get_scsi_one(dev,vaddr,len) \
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-	sparc32_dma_ops->get_scsi_one(dev, vaddr, len)
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-#define mmu_get_scsi_sgl(dev,sg,sz) \
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-	sparc32_dma_ops->get_scsi_sgl(dev, sg, sz)
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-#define mmu_release_scsi_one(dev,vaddr,len) \
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-	sparc32_dma_ops->release_scsi_one(dev, vaddr,len)
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-#define mmu_release_scsi_sgl(dev,sg,sz) \
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-	sparc32_dma_ops->release_scsi_sgl(dev, sg, sz)
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-
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-#ifdef CONFIG_SBUS
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-/*
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- * mmu_map/unmap are provided by iommu/iounit; Invalid to call on IIep.
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- *
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- * The mmu_map_dma_area establishes two mappings in one go.
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- * These mappings point to pages normally mapped at 'va' (linear address).
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- * First mapping is for CPU visible address at 'a', uncached.
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- * This is an alias, but it works because it is an uncached mapping.
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- * Second mapping is for device visible address, or "bus" address.
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- * The bus address is returned at '*pba'.
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- *
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- * These functions seem distinct, but are hard to split.
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- * On sun4m, page attributes depend on the CPU type, so we have to
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- * know if we are mapping RAM or I/O, so it has to be an additional argument
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- * to a separate mapping function for CPU visible mappings.
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- */
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-#define sbus_map_dma_area(dev,pba,va,a,len) \
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-	sparc32_dma_ops->map_dma_area(dev, pba, va, a, len)
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-#define sbus_unmap_dma_area(dev,ba,len) \
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-	sparc32_dma_ops->unmap_dma_area(dev, ba, len)
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-#endif /* CONFIG_SBUS */
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-
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+unsigned long sparc_dma_alloc_resource(struct device *dev, size_t len);
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+bool sparc_dma_free_resource(void *cpu_addr, size_t size);
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 #endif
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 #endif /* !(_ASM_SPARC_DMA_H) */