From: Christoph Hellwig <hch@lst.de>
To: x86@kernel.org, linux-arm-kernel@lists.infradead.org,
xen-devel@lists.xenproject.org, linux-c6x-dev@linux-c6x.org,
linux-hexagon@vger.kernel.org, linux-ia64@vger.kernel.org,
linux-mips@linux-mips.org, openrisc@lists.librecores.org,
linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org,
linux-sh@vger.kernel.org, sparclinux@vger.kernel.org,
linux-xtensa@linux-xtensa.org, dmaengine@vger.kernel.org,
linux-tegra@vger.kernel.org, dri-devel@lists.freedesktop.org,
linux-samsung-soc@vger.kernel.org,
iommu@lists.linux-foundation.org, netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Subject: [PATCH 06/44] iommu/dma: don't rely on DMA_ERROR_CODE
Date: Fri, 16 Jun 2017 20:10:21 +0200 [thread overview]
Message-ID: <20170616181059.19206-7-hch__24417.8367582665$1497636746$gmane$org@lst.de> (raw)
In-Reply-To: <20170616181059.19206-1-hch@lst.de>
DMA_ERROR_CODE is not a public API and will go away soon. dma dma-iommu
driver already implements a proper ->mapping_error method, so it's only
using the value internally. Add a new local define using the value
that arm64 which is the only current user of dma-iommu.
Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/iommu/dma-iommu.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 62618e77bedc..9403336f1fa6 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -31,6 +31,8 @@
#include <linux/scatterlist.h>
#include <linux/vmalloc.h>
+#define IOMMU_MAPPING_ERROR 0
+
struct iommu_dma_msi_page {
struct list_head list;
dma_addr_t iova;
@@ -500,7 +502,7 @@ void iommu_dma_free(struct device *dev, struct page **pages, size_t size,
{
__iommu_dma_unmap(iommu_get_domain_for_dev(dev), *handle, size);
__iommu_dma_free_pages(pages, PAGE_ALIGN(size) >> PAGE_SHIFT);
- *handle = DMA_ERROR_CODE;
+ *handle = IOMMU_MAPPING_ERROR;
}
/**
@@ -533,7 +535,7 @@ struct page **iommu_dma_alloc(struct device *dev, size_t size, gfp_t gfp,
dma_addr_t iova;
unsigned int count, min_size, alloc_sizes = domain->pgsize_bitmap;
- *handle = DMA_ERROR_CODE;
+ *handle = IOMMU_MAPPING_ERROR;
min_size = alloc_sizes & -alloc_sizes;
if (min_size < PAGE_SIZE) {
@@ -627,11 +629,11 @@ static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys,
iova = iommu_dma_alloc_iova(domain, size, dma_get_mask(dev), dev);
if (!iova)
- return DMA_ERROR_CODE;
+ return IOMMU_MAPPING_ERROR;
if (iommu_map(domain, iova, phys - iova_off, size, prot)) {
iommu_dma_free_iova(cookie, iova, size);
- return DMA_ERROR_CODE;
+ return IOMMU_MAPPING_ERROR;
}
return iova + iova_off;
}
@@ -671,7 +673,7 @@ static int __finalise_sg(struct device *dev, struct scatterlist *sg, int nents,
s->offset += s_iova_off;
s->length = s_length;
- sg_dma_address(s) = DMA_ERROR_CODE;
+ sg_dma_address(s) = IOMMU_MAPPING_ERROR;
sg_dma_len(s) = 0;
/*
@@ -714,11 +716,11 @@ static void __invalidate_sg(struct scatterlist *sg, int nents)
int i;
for_each_sg(sg, s, nents, i) {
- if (sg_dma_address(s) != DMA_ERROR_CODE)
+ if (sg_dma_address(s) != IOMMU_MAPPING_ERROR)
s->offset += sg_dma_address(s);
if (sg_dma_len(s))
s->length = sg_dma_len(s);
- sg_dma_address(s) = DMA_ERROR_CODE;
+ sg_dma_address(s) = IOMMU_MAPPING_ERROR;
sg_dma_len(s) = 0;
}
}
@@ -836,7 +838,7 @@ void iommu_dma_unmap_resource(struct device *dev, dma_addr_t handle,
int iommu_dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
- return dma_addr == DMA_ERROR_CODE;
+ return dma_addr == IOMMU_MAPPING_ERROR;
}
static struct iommu_dma_msi_page *iommu_dma_get_msi_page(struct device *dev,
--
2.11.0
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next prev parent reply other threads:[~2017-06-16 18:11 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170616181059.19206-1-hch@lst.de>
2017-06-16 18:10 ` [PATCH 01/44] firmware/ivc: use dma_mapping_error Christoph Hellwig
2017-06-16 18:10 ` [PATCH 02/44] ibmveth: properly unwind on init errors Christoph Hellwig
2017-06-16 18:10 ` [PATCH 03/44] dmaengine: ioat: don't use DMA_ERROR_CODE Christoph Hellwig
2017-06-16 18:10 ` [PATCH 04/44] drm/exynos: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 05/44] drm/armada: don't abuse DMA_ERROR_CODE Christoph Hellwig
2017-06-16 18:10 ` Christoph Hellwig [this message]
2017-06-16 18:10 ` [PATCH 07/44] xen-swiotlb: consolidate xen_swiotlb_dma_ops Christoph Hellwig
2017-06-16 18:10 ` [PATCH 08/44] xen-swiotlb: implement ->mapping_error Christoph Hellwig
2017-06-16 18:10 ` [PATCH 09/44] c6x: remove DMA_ERROR_CODE Christoph Hellwig
2017-06-16 18:10 ` [PATCH 10/44] ia64: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 11/44] m32r: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 12/44] microblaze: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 13/44] openrisc: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 14/44] sh: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 15/44] xtensa: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 16/44] arm64: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 17/44] hexagon: switch to use ->mapping_error for error reporting Christoph Hellwig
2017-06-16 18:10 ` [PATCH 18/44] iommu/amd: implement ->mapping_error Christoph Hellwig
2017-06-16 18:10 ` [PATCH 19/44] s390: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 20/44] sparc: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 21/44] powerpc: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 22/44] x86/pci-nommu: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 23/44] x86/calgary: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 24/44] x86: remove DMA_ERROR_CODE Christoph Hellwig
2017-06-16 18:10 ` [PATCH 25/44] arm: implement ->mapping_error Christoph Hellwig
2017-06-16 18:10 ` [PATCH 26/44] dma-mapping: remove DMA_ERROR_CODE Christoph Hellwig
2017-06-16 18:10 ` [PATCH 27/44] sparc: remove leon_dma_ops Christoph Hellwig
2017-06-16 18:10 ` [PATCH 28/44] sparc: remove arch specific dma_supported implementations Christoph Hellwig
2017-06-16 18:10 ` [PATCH 29/44] dma-noop: remove dma_supported and mapping_error methods Christoph Hellwig
2017-06-16 18:10 ` [PATCH 30/44] dma-virt: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 31/44] hexagon: remove arch-specific dma_supported implementation Christoph Hellwig
2017-06-16 18:10 ` [PATCH 32/44] hexagon: remove the unused dma_is_consistent prototype Christoph Hellwig
2017-06-16 18:10 ` [PATCH 33/44] openrisc: remove arch-specific dma_supported implementation Christoph Hellwig
2017-06-16 18:10 ` [PATCH 34/44] arm: remove arch specific " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 35/44] x86: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 36/44] dma-mapping: remove HAVE_ARCH_DMA_SUPPORTED Christoph Hellwig
2017-06-16 18:10 ` [PATCH 37/44] mips/loongson64: implement ->dma_supported instead of ->set_dma_mask Christoph Hellwig
2017-06-16 18:10 ` [PATCH 38/44] arm: " Christoph Hellwig
2017-06-16 18:10 ` [PATCH 39/44] xen-swiotlb: remove xen_swiotlb_set_dma_mask Christoph Hellwig
2017-06-16 18:10 ` [PATCH 40/44] tile: remove dma_supported and mapping_error methods Christoph Hellwig
2017-06-16 18:10 ` [PATCH 41/44] powerpc/cell: clean up fixed mapping dma_ops initialization Christoph Hellwig
2017-06-16 18:10 ` [PATCH 42/44] powerpc/cell: use the dma_supported method for ops switching Christoph Hellwig
2017-06-16 18:10 ` [PATCH 43/44] dma-mapping: remove the set_dma_mask method Christoph Hellwig
2017-06-16 18:10 ` [PATCH 44/44] powerpc: merge __dma_set_mask into dma_set_mask Christoph Hellwig
[not found] ` <20170616181059.19206-4-hch@lst.de>
2017-06-16 20:40 ` [PATCH 03/44] dmaengine: ioat: don't use DMA_ERROR_CODE Alexander Duyck
[not found] ` <CAKgT0UdxrimWrxNVsLMQ9G6ABBJZwfWHTcP18qqd4rT0Fa-KWg@mail.gmail.com>
2017-06-18 7:09 ` Christoph Hellwig
[not found] ` <20170616181059.19206-43-hch@lst.de>
2017-06-17 20:50 ` [PATCH 42/44] powerpc/cell: use the dma_supported method for ops switching Benjamin Herrenschmidt
[not found] ` <1497732627.2897.128.camel@kernel.crashing.org>
2017-06-18 7:13 ` Christoph Hellwig
[not found] ` <20170618071344.GB18526@infradead.org>
2017-06-18 9:54 ` Benjamin Herrenschmidt
[not found] ` <20170616181059.19206-7-hch@lst.de>
2017-06-19 15:12 ` [PATCH 06/44] iommu/dma: don't rely on DMA_ERROR_CODE Robin Murphy
2017-06-20 12:41 ` new dma-mapping tree, was Re: clean up and modularize arch dma_mapping interface V2 Christoph Hellwig
[not found] ` <20170620124140.GA27163@lst.de>
2017-06-20 13:04 ` Stephen Rothwell
2017-06-20 13:14 ` Robin Murphy
[not found] ` <6025d4d4-1975-9598-c16d-26d17d029ec7@arm.com>
2017-06-20 13:15 ` Christoph Hellwig
[not found] ` <20170620230400.1a5ae889@canb.auug.org.au>
2017-06-20 13:16 ` Christoph Hellwig
[not found] ` <CGME20170620131628epcas1p4f21d821bd414cba7e2d49abcbe414365@epcas1p4.samsung.com>
[not found] ` <20170620131623.GB30769@lst.de>
2017-06-21 13:32 ` Marek Szyprowski
[not found] ` <5425587c-73e8-e24a-86a3-8a65a7791dcb@samsung.com>
2017-06-22 21:53 ` Stephen Rothwell
2017-06-26 7:03 ` Christoph Hellwig
2017-06-21 19:24 ` tndave
[not found] ` <162d7932-5766-4c29-5471-07d1b699190a@oracle.com>
2017-06-24 7:18 ` Christoph Hellwig
[not found] ` <20170624071855.GD14580@lst.de>
2017-06-24 15:36 ` Benjamin Herrenschmidt
[not found] ` <1498318616.31581.87.camel@kernel.crashing.org>
2017-06-26 9:47 ` Christoph Hellwig
[not found] ` <20170626094739.GB13981@lst.de>
2017-06-26 22:06 ` tndave
[not found] <20170608132609.32662-1-hch@lst.de>
2017-06-08 13:25 ` [PATCH 06/44] iommu/dma: don't rely on DMA_ERROR_CODE Christoph Hellwig
[not found] ` <20170608132609.32662-7-hch@lst.de>
2017-06-08 13:59 ` Robin Murphy
[not found] ` <0bfb0841-f054-78de-628d-a0955336bcb4@arm.com>
2017-06-16 8:37 ` Christoph Hellwig
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