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sparc32: use per-device dma_ops

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sparc32 is the last platform making dynamic decisions in
get_arch_dma_ops based on the bus passed in.  Instead set the
iommu dma_ops at iommu probing and propagate them in
of_propagate_archdata, falling back to the NULL ops for the
direct mapping in the Leon or PCI case.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig
2020-03-23 09:43:42 +01:00
committed by David S. Miller
parent bef7b2a7be
commit 255a69a94b
7 changed files with 16 additions and 34 deletions
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15
arch/sparc/include/asm/dma-mapping.h
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@@ -2,23 +2,12 @@
#ifndef ___ASM_SPARC_DMA_MAPPING_H
#define ___ASM_SPARC_DMA_MAPPING_H
#include <asm/cpu_type.h>
extern const struct dma_map_ops *dma_ops;
extern struct bus_type pci_bus_type;
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
#ifdef CONFIG_SPARC_LEON
if (sparc_cpu_model == sparc_leon)
return NULL;
#endif
#if defined(CONFIG_SPARC32) && defined(CONFIG_PCI)
if (bus == &pci_bus_type)
return NULL;
#endif
return dma_ops;
/* sparc32 uses per-device dma_ops */
return IS_ENABLED(CONFIG_SPARC64) ? dma_ops : NULL;
}
#endif