From 16e73adbca76fd18733278cb688b0ddb4cad162c Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 19 Mar 2018 11:38:26 +0100 Subject: dma/swiotlb: Remove swiotlb_{alloc,free}_coherent() Unused now that everyone uses swiotlb_{alloc,free}(). Tested-by: Tom Lendacky Signed-off-by: Christoph Hellwig Reviewed-by: Thomas Gleixner Cc: David Woodhouse Cc: Joerg Roedel Cc: Jon Mason Cc: Konrad Rzeszutek Wilk Cc: Linus Torvalds Cc: Muli Ben-Yehuda Cc: Peter Zijlstra Cc: iommu@lists.linux-foundation.org Link: http://lkml.kernel.org/r/20180319103826.12853-15-hch@lst.de Signed-off-by: Ingo Molnar --- lib/swiotlb.c | 38 -------------------------------------- 1 file changed, 38 deletions(-) (limited to 'lib') diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 8b06b4485e65..15954b86f09e 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -157,13 +157,6 @@ unsigned long swiotlb_size_or_default(void) return size ? size : (IO_TLB_DEFAULT_SIZE); } -/* Note that this doesn't work with highmem page */ -static dma_addr_t swiotlb_virt_to_bus(struct device *hwdev, - volatile void *address) -{ - return phys_to_dma(hwdev, virt_to_phys(address)); -} - static bool no_iotlb_memory; void swiotlb_print_info(void) @@ -752,28 +745,6 @@ out_warn: return NULL; } -void * -swiotlb_alloc_coherent(struct device *hwdev, size_t size, - dma_addr_t *dma_handle, gfp_t flags) -{ - int order = get_order(size); - unsigned long attrs = (flags & __GFP_NOWARN) ? DMA_ATTR_NO_WARN : 0; - void *ret; - - ret = (void *)__get_free_pages(flags, order); - if (ret) { - *dma_handle = swiotlb_virt_to_bus(hwdev, ret); - if (dma_coherent_ok(hwdev, *dma_handle, size)) { - memset(ret, 0, size); - return ret; - } - free_pages((unsigned long)ret, order); - } - - return swiotlb_alloc_buffer(hwdev, size, dma_handle, attrs); -} -EXPORT_SYMBOL(swiotlb_alloc_coherent); - static bool swiotlb_free_buffer(struct device *dev, size_t size, dma_addr_t dma_addr) { @@ -793,15 +764,6 @@ static bool swiotlb_free_buffer(struct device *dev, size_t size, return true; } -void -swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr, - dma_addr_t dev_addr) -{ - if (!swiotlb_free_buffer(hwdev, size, dev_addr)) - free_pages((unsigned long)vaddr, get_order(size)); -} -EXPORT_SYMBOL(swiotlb_free_coherent); - static void swiotlb_full(struct device *dev, size_t size, enum dma_data_direction dir, int do_panic) -- cgit v1.2.3