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dma-direct: avoid a forward declaration for phys_to_dma

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Move dma_capable down a bit so that we don't need a forward declaration
for phys_to_dma.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
This commit is contained in:
Christoph Hellwig 2019-11-12 17:07:43 +01:00
parent 130c1ccbf5
commit c7345159f7
1 changed files with 14 additions and 16 deletions
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30
include/linux/dma-direct.h
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@ -6,8 +6,6 @@
#include <linux/memblock.h> /* for min_low_pfn */
#include <linux/mem_encrypt.h>
static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr);
#ifdef CONFIG_ARCH_HAS_PHYS_TO_DMA
#include <asm/dma-direct.h>
#else
@ -26,20 +24,6 @@ static inline phys_addr_t __dma_to_phys(struct device *dev, dma_addr_t dev_addr)
}
#endif /* !CONFIG_ARCH_HAS_PHYS_TO_DMA */
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
dma_addr_t end = addr + size - 1;
if (!dev->dma_mask)
return false;
if (!IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) &&
min(addr, end) < phys_to_dma(dev, PFN_PHYS(min_low_pfn)))
return false;
return end <= min_not_zero(*dev->dma_mask, dev->bus_dma_mask);
}
#ifdef CONFIG_ARCH_HAS_FORCE_DMA_UNENCRYPTED
bool force_dma_unencrypted(struct device *dev);
#else
@ -65,6 +49,20 @@ static inline phys_addr_t dma_to_phys(struct device *dev, dma_addr_t daddr)
return __sme_clr(__dma_to_phys(dev, daddr));
}
static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
{
dma_addr_t end = addr + size - 1;
if (!dev->dma_mask)
return false;
if (!IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT) &&
min(addr, end) < phys_to_dma(dev, PFN_PHYS(min_low_pfn)))
return false;
return end <= min_not_zero(*dev->dma_mask, dev->bus_dma_mask);
}
u64 dma_direct_get_required_mask(struct device *dev);
void *dma_direct_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle,
gfp_t gfp, unsigned long attrs);