Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932996AbdL2IY2 (ORCPT ); Fri, 29 Dec 2017 03:24:28 -0500 Received: from bombadil.infradead.org ([65.50.211.133]:60516 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932651AbdL2IYY (ORCPT ); Fri, 29 Dec 2017 03:24:24 -0500 From: Christoph Hellwig To: iommu@lists.linux-foundation.org Cc: linux-alpha@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, adi-buildroot-devel@lists.sourceforge.net, linux-c6x-dev@linux-c6x.org, linux-cris-kernel@axis.com, linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org, linux-m68k@vger.kernel.org, linux-metag@vger.kernel.org, Michal Simek , linux-mips@linux-mips.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, patches@groups.riscv.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, Guan Xuetao , x86@kernel.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 66/67] swiotlb: remove swiotlb_{alloc,free}_coherent Date: Fri, 29 Dec 2017 09:19:10 +0100 Message-Id: <20171229081911.2802-67-hch@lst.de> X-Mailer: git-send-email 2.14.2 In-Reply-To: <20171229081911.2802-1-hch@lst.de> References: <20171229081911.2802-1-hch@lst.de> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2829 Lines: 95 Unused now that everyone uses swiotlb_{alloc,free}. Signed-off-by: Christoph Hellwig --- include/linux/swiotlb.h | 8 -------- lib/swiotlb.c | 41 ----------------------------------------- 2 files changed, 49 deletions(-) diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 5b1f2a00491c..965be92c33b5 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -72,14 +72,6 @@ void *swiotlb_alloc(struct device *hwdev, size_t size, dma_addr_t *dma_handle, void swiotlb_free(struct device *dev, size_t size, void *vaddr, dma_addr_t dma_addr, unsigned long attrs); -extern void -*swiotlb_alloc_coherent(struct device *hwdev, size_t size, - dma_addr_t *dma_handle, gfp_t flags); - -extern void -swiotlb_free_coherent(struct device *hwdev, size_t size, - void *vaddr, dma_addr_t dma_handle); - extern dma_addr_t swiotlb_map_page(struct device *dev, struct page *page, unsigned long offset, size_t size, enum dma_data_direction dir, diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 4ea0b5710618..77a40b508db8 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) @@ -743,31 +736,6 @@ swiotlb_alloc_buffer(struct device *dev, size_t size, dma_addr_t *dma_handle) 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); - void *ret; - - ret = (void *)__get_free_pages(flags, order); - if (ret) { - *dma_handle = swiotlb_virt_to_bus(hwdev, ret); - if (*dma_handle + size - 1 <= hwdev->coherent_dma_mask) { - memset(ret, 0, size); - return ret; - } - - /* - * The allocated memory isn't reachable by the device. - */ - free_pages((unsigned long) ret, order); - } - - return swiotlb_alloc_buffer(hwdev, size, dma_handle); -} -EXPORT_SYMBOL(swiotlb_alloc_coherent); - static bool swiotlb_free_buffer(struct device *dev, size_t size, dma_addr_t dma_addr) { @@ -787,15 +755,6 @@ 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) -- 2.14.2