From: Krzysztof Kozlowski <k.kozlowski@samsung.com>
To: Robin Murphy <robin.murphy@arm.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Jisheng Zhang <jszhang@marvell.com>,
Joerg Roedel <jroedel@suse.de>, Arnd Bergmann <arnd@arndb.de>,
Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
linux-kernel@vger.kernel.org, hch@infradead.org, "Suthikulpanit,
Suravee" <Suravee.Suthikulpanit@amd.com>,
linux-arm-kernel@lists.infradead.org,
Marek Szyprowski <m.szyprowski@samsung.com>
Subject: Re: [PATCH v4 05/44] arm64: dma-mapping: Use unsigned long for dma_attrs
Date: Fri, 10 Jun 2016 12:55:09 +0200 [thread overview]
Message-ID: <575A9C8D.1060203@samsung.com> (raw)
In-Reply-To: <575A9BC4.3090603@arm.com>
On 06/10/2016 12:51 PM, Robin Murphy wrote:
> Hi Krzysztof,
>
> On 10/06/16 11:11, Krzysztof Kozlowski wrote:
>> Split out subsystem specific changes for easier reviews. This will be
>> squashed with main commit.
>>
>> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
>> ---
>> arch/arm64/mm/dma-mapping.c | 57
>> +++++++++++++++++++++++----------------------
>> 1 file changed, 29 insertions(+), 28 deletions(-)
>>
>> diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
>> index 0ef620a34c4e..a7686028dfeb 100644
>> --- a/arch/arm64/mm/dma-mapping.c
>> +++ b/arch/arm64/mm/dma-mapping.c
>> @@ -29,7 +29,7 @@
>>
>> #include <asm/cacheflush.h>
>>
>> -static pgprot_t __get_dma_pgprot(const struct dma_attrs *attrs,
>> pgprot_t prot,
>> +static pgprot_t __get_dma_pgprot(unsigned long attrs, pgprot_t prot,
>> bool coherent)
>
> Is this series intended to replace the patches currently in -next adding
> that "const"? (I was momentarily puzzled why this wouldn't apply locally)
Yes, the series replace completely my previous const changes (applied by
Andrew Morton).
I rebased the patchset on linux-next so I could grab all recent changes
around dma_attrs. Probably that should be changed before applying -
choose one tree to base on (Andrew's?).
If you would like to play with the entire series (on top of next):
https://github.com/krzk/linux/tree/for-next/dma-attrs-const-v4
>
>> {
>> if (!coherent || dma_get_attr(DMA_ATTR_WRITE_COMBINE, attrs))
>> @@ -88,7 +88,7 @@ static int __free_from_pool(void *start, size_t size)
>>
>> static void *__dma_alloc_coherent(struct device *dev, size_t size,
>> dma_addr_t *dma_handle, gfp_t flags,
>> - const struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> if (dev == NULL) {
>> WARN_ONCE(1, "Use an actual device structure for DMA
>> allocation\n");
>> @@ -118,7 +118,7 @@ static void *__dma_alloc_coherent(struct device
>> *dev, size_t size,
>>
>> static void __dma_free_coherent(struct device *dev, size_t size,
>> void *vaddr, dma_addr_t dma_handle,
>> - const struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> bool freed;
>> phys_addr_t paddr = dma_to_phys(dev, dma_handle);
>> @@ -137,7 +137,7 @@ static void __dma_free_coherent(struct device
>> *dev, size_t size,
>>
>> static void *__dma_alloc(struct device *dev, size_t size,
>> dma_addr_t *dma_handle, gfp_t flags,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> struct page *page;
>> void *ptr, *coherent_ptr;
>> @@ -185,7 +185,7 @@ no_mem:
>>
>> static void __dma_free(struct device *dev, size_t size,
>> void *vaddr, dma_addr_t dma_handle,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> void *swiotlb_addr = phys_to_virt(dma_to_phys(dev, dma_handle));
>>
>> @@ -202,7 +202,7 @@ static void __dma_free(struct device *dev, size_t
>> size,
>> static dma_addr_t __swiotlb_map_page(struct device *dev, struct page
>> *page,
>> unsigned long offset, size_t size,
>> enum dma_data_direction dir,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> dma_addr_t dev_addr;
>>
>> @@ -216,7 +216,7 @@ static dma_addr_t __swiotlb_map_page(struct device
>> *dev, struct page *page,
>>
>> static void __swiotlb_unmap_page(struct device *dev, dma_addr_t
>> dev_addr,
>> size_t size, enum dma_data_direction dir,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> if (!is_device_dma_coherent(dev))
>> __dma_unmap_area(phys_to_virt(dma_to_phys(dev, dev_addr)),
>> size, dir);
>> @@ -225,7 +225,7 @@ static void __swiotlb_unmap_page(struct device
>> *dev, dma_addr_t dev_addr,
>>
>> static int __swiotlb_map_sg_attrs(struct device *dev, struct
>> scatterlist *sgl,
>> int nelems, enum dma_data_direction dir,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> struct scatterlist *sg;
>> int i, ret;
>> @@ -242,7 +242,7 @@ static int __swiotlb_map_sg_attrs(struct device
>> *dev, struct scatterlist *sgl,
>> static void __swiotlb_unmap_sg_attrs(struct device *dev,
>> struct scatterlist *sgl, int nelems,
>> enum dma_data_direction dir,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> struct scatterlist *sg;
>> int i;
>> @@ -303,7 +303,7 @@ static void __swiotlb_sync_sg_for_device(struct
>> device *dev,
>> static int __swiotlb_mmap(struct device *dev,
>> struct vm_area_struct *vma,
>> void *cpu_addr, dma_addr_t dma_addr, size_t size,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> int ret = -ENXIO;
>> unsigned long nr_vma_pages = (vma->vm_end - vma->vm_start) >>
>> @@ -330,7 +330,7 @@ static int __swiotlb_mmap(struct device *dev,
>>
>> static int __swiotlb_get_sgtable(struct device *dev, struct sg_table
>> *sgt,
>> void *cpu_addr, dma_addr_t handle, size_t size,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> int ret = sg_alloc_table(sgt, 1, GFP_KERNEL);
>>
>> @@ -425,21 +425,21 @@ out:
>>
>> static void *__dummy_alloc(struct device *dev, size_t size,
>> dma_addr_t *dma_handle, gfp_t flags,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> return NULL;
>> }
>>
>> static void __dummy_free(struct device *dev, size_t size,
>> void *vaddr, dma_addr_t dma_handle,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> }
>>
>> static int __dummy_mmap(struct device *dev,
>> struct vm_area_struct *vma,
>> void *cpu_addr, dma_addr_t dma_addr, size_t size,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> return -ENXIO;
>> }
>> @@ -447,20 +447,20 @@ static int __dummy_mmap(struct device *dev,
>> static dma_addr_t __dummy_map_page(struct device *dev, struct page
>> *page,
>> unsigned long offset, size_t size,
>> enum dma_data_direction dir,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> return DMA_ERROR_CODE;
>> }
>>
>> static void __dummy_unmap_page(struct device *dev, dma_addr_t dev_addr,
>> size_t size, enum dma_data_direction dir,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> }
>>
>> static int __dummy_map_sg(struct device *dev, struct scatterlist *sgl,
>> int nelems, enum dma_data_direction dir,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> return 0;
>> }
>> @@ -468,7 +468,7 @@ static int __dummy_map_sg(struct device *dev,
>> struct scatterlist *sgl,
>> static void __dummy_unmap_sg(struct device *dev,
>> struct scatterlist *sgl, int nelems,
>> enum dma_data_direction dir,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> }
>>
>> @@ -540,7 +540,7 @@ static void flush_page(struct device *dev, const
>> void *virt, phys_addr_t phys)
>>
>> static void *__iommu_alloc_attrs(struct device *dev, size_t size,
>> dma_addr_t *handle, gfp_t gfp,
>> - struct dma_attrs *attrs)
>> + unsigned long attrs)
>> {
>> bool coherent = is_device_dma_coherent(dev);
>> int ioprot = dma_direction_to_prot(DMA_BIDIRECTIONAL, coherent);
>> @@ -600,7 +600,8 @@ static void *__iommu_alloc_attrs(struct device
>> *dev, size_t size,
>> }
>>
>> static void __iommu_free_attrs(struct device *dev, size_t size, void
>> *cpu_addr,
>> - dma_addr_t handle, struct dma_attrs *attrs)
>> + dma_addr_t handle,
>> + unsigned long attrs)
>
> Nit: unnecessary line break?
>
> Otherwise, though, I'm all for the idea;
>
> Acked-by: Robin Murphy <robin.murphy@arm.com>
Right, thanks!
Best regards,
Krzysztof
next prev parent reply other threads:[~2016-06-10 10:55 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-10 10:11 [PATCH v4 00/44] dma-mapping: Use unsigned long for dma_attrs Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 01/44] " Krzysztof Kozlowski
2016-06-10 14:49 ` Luis R. Rodriguez
2016-06-10 20:16 ` Krzysztof Kozlowski
2016-06-10 20:23 ` Luis R. Rodriguez
2016-06-10 20:44 ` Krzysztof Kozlowski
2016-06-10 21:08 ` Luis R. Rodriguez
2016-06-13 16:00 ` Christoph Hellwig
2016-06-13 17:41 ` Luis R. Rodriguez
2016-06-10 10:11 ` [PATCH v4 02/44] alpha: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 03/44] arc: " Krzysztof Kozlowski
2016-06-10 10:54 ` Vineet Gupta
2016-06-10 10:11 ` [PATCH v4 04/44] ARM: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 05/44] arm64: " Krzysztof Kozlowski
2016-06-10 10:51 ` Robin Murphy
2016-06-10 10:55 ` Krzysztof Kozlowski [this message]
2016-06-10 10:11 ` [PATCH v4 06/44] avr32: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 07/44] blackfin: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 08/44] c6x: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 09/44] cris: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 10/44] frv: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 11/44] drm/exynos: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 12/44] drm/mediatek: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 13/44] drm/msm: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 14/44] drm/nouveau: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 15/44] drm/rockship: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 16/44] infiniband: " Krzysztof Kozlowski
2016-06-10 18:18 ` Bart Van Assche
2016-06-13 15:08 ` Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 17/44] iommu: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 18/44] [media] " Krzysztof Kozlowski
[not found] ` <575AB26E.4020401@st.com>
2016-06-10 12:37 ` Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 19/44] xen: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 20/44] swiotlb: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 21/44] powerpc: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 22/44] video: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 23/44] x86: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 24/44] iommu: intel: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 25/44] h8300: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 26/44] hexagon: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 27/44] ia64: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 28/44] m68k: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 29/44] metag: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 30/44] microblaze: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 31/44] mips: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 32/44] mn10300: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 33/44] nios2: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 34/44] openrisc: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 35/44] parisc: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 36/44] misc: mic: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 37/44] s390: " Krzysztof Kozlowski
2016-06-10 16:30 ` Gerald Schaefer
2016-06-10 10:11 ` [PATCH v4 38/44] sh: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 39/44] sparc: " Krzysztof Kozlowski
2016-06-10 17:43 ` David Miller
2016-06-10 20:03 ` Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 40/44] tile: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 41/44] unicore32: " Krzysztof Kozlowski
2016-06-10 10:11 ` [PATCH v4 42/44] xtensa: " Krzysztof Kozlowski
2016-06-10 10:12 ` [PATCH v4 44/44] dma-mapping: Document the DMA attributes next to the declaration Krzysztof Kozlowski
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