diff options
Diffstat (limited to 'arch/hexagon/kernel/dma.c')
| -rw-r--r-- | arch/hexagon/kernel/dma.c | 21 |
1 files changed, 9 insertions, 12 deletions
diff --git a/arch/hexagon/kernel/dma.c b/arch/hexagon/kernel/dma.c index e74b65009587..546792d176a4 100644 --- a/arch/hexagon/kernel/dma.c +++ b/arch/hexagon/kernel/dma.c @@ -25,25 +25,16 @@ #include <linux/module.h> #include <asm/page.h> +#define HEXAGON_MAPPING_ERROR 0 + const struct dma_map_ops *dma_ops; EXPORT_SYMBOL(dma_ops); -int bad_dma_address; /* globals are automatically initialized to zero */ - static inline void *dma_addr_to_virt(dma_addr_t dma_addr) { return phys_to_virt((unsigned long) dma_addr); } -int dma_supported(struct device *dev, u64 mask) -{ - if (mask == DMA_BIT_MASK(32)) - return 1; - else - return 0; -} -EXPORT_SYMBOL(dma_supported); - static struct gen_pool *coherent_pool; @@ -181,7 +172,7 @@ static dma_addr_t hexagon_map_page(struct device *dev, struct page *page, WARN_ON(size == 0); if (!check_addr("map_single", dev, bus, size)) - return bad_dma_address; + return HEXAGON_MAPPING_ERROR; if (!(attrs & DMA_ATTR_SKIP_CPU_SYNC)) dma_sync(dma_addr_to_virt(bus), size, dir); @@ -203,6 +194,11 @@ static void hexagon_sync_single_for_device(struct device *dev, dma_sync(dma_addr_to_virt(dma_handle), size, dir); } +static int hexagon_mapping_error(struct device *dev, dma_addr_t dma_addr) +{ + return dma_addr == HEXAGON_MAPPING_ERROR; +} + const struct dma_map_ops hexagon_dma_ops = { .alloc = hexagon_dma_alloc_coherent, .free = hexagon_free_coherent, @@ -210,6 +206,7 @@ const struct dma_map_ops hexagon_dma_ops = { .map_page = hexagon_map_page, .sync_single_for_cpu = hexagon_sync_single_for_cpu, .sync_single_for_device = hexagon_sync_single_for_device, + .mapping_error = hexagon_mapping_error, .is_phys = 1, }; |