diff options
author | Christoph Hellwig <hch@lst.de> | 2016-01-20 15:01:38 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-20 17:09:18 -0800 |
commit | e20dd88995dffe262934f355b3e96daa2458b331 (patch) | |
tree | d65f4929ed6d84bc6cfcf31b2ccf5968b8c1e32b /arch/cris/arch-v32 | |
parent | 4605f04b2893fb5498b31c54e8f21da2fc4cc736 (diff) | |
download | linux-e20dd88995dffe262934f355b3e96daa2458b331.tar.bz2 |
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>
Diffstat (limited to 'arch/cris/arch-v32')
-rw-r--r-- | arch/cris/arch-v32/drivers/pci/dma.c | 54 |
1 files changed, 42 insertions, 12 deletions
diff --git a/arch/cris/arch-v32/drivers/pci/dma.c b/arch/cris/arch-v32/drivers/pci/dma.c index ee55578d9834..8d5efa58cce1 100644 --- a/arch/cris/arch-v32/drivers/pci/dma.c +++ b/arch/cris/arch-v32/drivers/pci/dma.c @@ -16,21 +16,18 @@ #include <linux/gfp.h> #include <asm/io.h> -void *dma_alloc_coherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) +static void *v32_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs) { void *ret; - int order = get_order(size); + /* ignore region specifiers */ gfp &= ~(__GFP_DMA | __GFP_HIGHMEM); - if (dma_alloc_from_coherent(dev, size, dma_handle, &ret)) - return ret; - if (dev == NULL || (dev->coherent_dma_mask < 0xffffffff)) gfp |= GFP_DMA; - ret = (void *)__get_free_pages(gfp, order); + ret = (void *)__get_free_pages(gfp, get_order(size)); if (ret != NULL) { memset(ret, 0, size); @@ -39,12 +36,45 @@ void *dma_alloc_coherent(struct device *dev, size_t size, return ret; } -void dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) +static void v32_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) +{ + free_pages((unsigned long)vaddr, get_order(size)); +} + +static inline dma_addr_t v32_dma_map_page(struct device *dev, + struct page *page, unsigned long offset, size_t size, + enum dma_data_direction direction, + struct dma_attrs *attrs) { - int order = get_order(size); + return page_to_phys(page) + offset; +} - if (!dma_release_from_coherent(dev, order, vaddr)) - free_pages((unsigned long)vaddr, order); +static inline int v32_dma_map_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) +{ + printk("Map sg\n"); + return nents; +} + +static inline int v32_dma_supported(struct device *dev, u64 mask) +{ + /* + * we fall back to GFP_DMA when the mask isn't all 1s, + * so we can't guarantee allocations that must be + * within a tighter range than GFP_DMA.. + */ + if (mask < 0x00ffffff) + return 0; + return 1; } +struct dma_map_ops v32_dma_ops = { + .alloc = v32_dma_alloc, + .free = v32_dma_free, + .map_page = v32_dma_map_page, + .map_sg = v32_dma_map_sg, + .dma_supported = v32_dma_supported, +}; +EXPORT_SYMBOL(v32_dma_ops); |