[05/16] c6x: convert to dma_map_ops

Message ID	1447093041-21832-6-git-send-email-hch@lst.de (mailing list archive)
State	Awaiting Upstream
Headers	show Return-Path: <linux-parisc-owner@kernel.org> From: Christoph Hellwig <hch@lst.de> To: Andrew Morton <akpm@linux-foundation.org>, Haavard Skinnemoen <hskinnemoen@gmail.com>, Hans-Christian Egtvedt <egtvedt@samfundet.no>, Steven Miao <realmz6@gmail.com>, Ley Foon Tan <lftan@altera.com>, David Howells <dhowells@redhat.com>, Koichi Yasutake <yasutake.koichi@jp.panasonic.com>, Chris Metcalf <cmetcalf@ezchip.com>, linux-snps-arc@lists.infraded.org, linux-c6x-dev@linux-c6x.org, linux-cris-kernel@axis.com, linux-parisc@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-metag@vger.kernel.org, sparclinux@vger.kernel.org, iommu@lists.linux-foundation.org Subject: [PATCH 05/16] c6x: convert to dma_map_ops Date: Mon, 9 Nov 2015 19:17:10 +0100 Message-Id: <1447093041-21832-6-git-send-email-hch@lst.de> In-Reply-To: <1447093041-21832-1-git-send-email-hch@lst.de> References: <1447093041-21832-1-git-send-email-hch@lst.de> Sender: linux-parisc-owner@vger.kernel.org Precedence: bulk

diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig index 77ea09b..8602f72 100644 --- a/arch/c6x/Kconfig +++ b/arch/c6x/Kconfig @@ -17,6 +17,8 @@ config C6X select OF_EARLY_FLATTREE select GENERIC_CLOCKEVENTS select MODULES_USE_ELF_RELA + select ARCH_NO_COHERENT_DMA_MMAP + select HAVE_DMA_ATTRS config MMU def_bool n diff --git a/arch/c6x/include/asm/dma-mapping.h b/arch/c6x/include/asm/dma-mapping.h index bbd7774..6aa20fd 100644 --- a/arch/c6x/include/asm/dma-mapping.h +++ b/arch/c6x/include/asm/dma-mapping.h @@ -12,104 +12,18 @@ #ifndef _ASM_C6X_DMA_MAPPING_H #define _ASM_C6X_DMA_MAPPING_H -#include <linux/dma-debug.h> -#include <asm-generic/dma-coherent.h> - -#define dma_supported(d, m) 1 - -static inline void dma_sync_single_range_for_device(struct device *dev, - dma_addr_t addr, - unsigned long offset, - size_t size, - enum dma_data_direction dir) -{ -} - -static inline int dma_set_mask(struct device *dev, u64 dma_mask) -{ - if (!dev->dma_mask || !dma_supported(dev, dma_mask)) - return -EIO; - - *dev->dma_mask = dma_mask; - - return 0; -} - /* * DMA errors are defined by all-bits-set in the DMA address. */ -static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr) -{ - debug_dma_mapping_error(dev, dma_addr); - return dma_addr == ~0; -} - -extern dma_addr_t dma_map_single(struct device *dev, void *cpu_addr, - size_t size, enum dma_data_direction dir); +#define DMA_ERROR_CODE ~0 -extern void dma_unmap_single(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir); +extern struct dma_map_ops c6x_dma_ops; -extern int dma_map_sg(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction direction); - -extern void dma_unmap_sg(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction direction); - -static inline dma_addr_t dma_map_page(struct device *dev, struct page *page, - unsigned long offset, size_t size, - enum dma_data_direction dir) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - dma_addr_t handle; - - handle = dma_map_single(dev, page_address(page) + offset, size, dir); - - debug_dma_map_page(dev, page, offset, size, dir, handle, false); - - return handle; -} - -static inline void dma_unmap_page(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) -{ - dma_unmap_single(dev, handle, size, dir); - - debug_dma_unmap_page(dev, handle, size, dir, false); -} - -extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir); - -extern void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, - size_t size, - enum dma_data_direction dir); - -extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir); - -extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir); - -extern void coherent_mem_init(u32 start, u32 size); -extern void *dma_alloc_coherent(struct device *, size_t, dma_addr_t *, gfp_t); -extern void dma_free_coherent(struct device *, size_t, void *, dma_addr_t); - -#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent((d), (s), (h), (f)) -#define dma_free_noncoherent(d, s, v, h) dma_free_coherent((d), (s), (v), (h)) - -/* Not supported for now */ -static inline int dma_mmap_coherent(struct device *dev, - struct vm_area_struct *vma, void *cpu_addr, - dma_addr_t dma_addr, size_t size) -{ - return -EINVAL; + return &c6x_dma_ops; } -static inline int dma_get_sgtable(struct device *dev, struct sg_table *sgt, - void *cpu_addr, dma_addr_t dma_addr, - size_t size) -{ - return -EINVAL; -} +#include <asm-generic/dma-mapping-common.h> #endif /* _ASM_C6X_DMA_MAPPING_H */ diff --git a/arch/c6x/kernel/dma.c b/arch/c6x/kernel/dma.c index ab7b12d..fd1d5c0 100644 --- a/arch/c6x/kernel/dma.c +++ b/arch/c6x/kernel/dma.c @@ -36,110 +36,99 @@ static void c6x_dma_sync(dma_addr_t handle, size_t size, } } -dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction dir) +static dma_addr_t c6x_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, enum dma_data_direction dir, + struct dma_attrs *attrs) { - dma_addr_t addr = virt_to_phys(ptr); + dma_addr_t handle = virt_to_phys(page_address(page) + offset); - c6x_dma_sync(addr, size, dir); - - debug_dma_map_page(dev, virt_to_page(ptr), - (unsigned long)ptr & ~PAGE_MASK, size, - dir, addr, true); - return addr; + c6x_dma_sync(handle, size, dir); + return handle; } -EXPORT_SYMBOL(dma_map_single); - -void dma_unmap_single(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) +static void c6x_dma_unmap_page(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir, struct dma_attrs *attrs) { c6x_dma_sync(handle, size, dir); - - debug_dma_unmap_page(dev, handle, size, dir, true); } -EXPORT_SYMBOL(dma_unmap_single); - -int dma_map_sg(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static int c6x_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction dir, struct dma_attrs *attrs) { struct scatterlist *sg; int i; for_each_sg(sglist, sg, nents, i) - sg->dma_address = dma_map_single(dev, sg_virt(sg), sg->length, - dir); - - debug_dma_map_sg(dev, sglist, nents, nents, dir); + sg->dma_address = sg_phys(sg); + c6x_dma_sync(sg->dma_address, sg->length, dir); + } return nents; } -EXPORT_SYMBOL(dma_map_sg); - -void dma_unmap_sg(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static void c6x_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction dir, + struct dma_attrs *attrs) { struct scatterlist *sg; int i; for_each_sg(sglist, sg, nents, i) - dma_unmap_single(dev, sg_dma_address(sg), sg->length, dir); + c6x_dma_sync(sg_dma_address(sg), sg->length, dir); - debug_dma_unmap_sg(dev, sglist, nents, dir); } -EXPORT_SYMBOL(dma_unmap_sg); -void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) +static void c6x_dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, + size_t size, enum dma_data_direction dir) { c6x_dma_sync(handle, size, dir); - debug_dma_sync_single_for_cpu(dev, handle, size, dir); } -EXPORT_SYMBOL(dma_sync_single_for_cpu); - -void dma_sync_single_for_device(struct device *dev, dma_addr_t handle, - size_t size, enum dma_data_direction dir) +static void c6x_dma_sync_single_for_device(struct device *dev, + dma_addr_t handle, size_t size, enum dma_data_direction dir) { c6x_dma_sync(handle, size, dir); - debug_dma_sync_single_for_device(dev, handle, size, dir); } -EXPORT_SYMBOL(dma_sync_single_for_device); - -void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static void c6x_dma_sync_sg_for_cpu(struct device *dev, + struct scatterlist *sglist, int nents, + enum dma_data_direction dir) { struct scatterlist *sg; int i; for_each_sg(sglist, sg, nents, i) - dma_sync_single_for_cpu(dev, sg_dma_address(sg), + c6x_dma_sync_single_for_cpu(dev, sg_dma_address(sg), sg->length, dir); - debug_dma_sync_sg_for_cpu(dev, sglist, nents, dir); } -EXPORT_SYMBOL(dma_sync_sg_for_cpu); - -void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist, - int nents, enum dma_data_direction dir) +static void c6x_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sglist, int nents, + enum dma_data_direction dir) { struct scatterlist *sg; int i; for_each_sg(sglist, sg, nents, i) - dma_sync_single_for_device(dev, sg_dma_address(sg), + c6x_dma_sync_single_for_device(dev, sg_dma_address(sg), sg->length, dir); - debug_dma_sync_sg_for_device(dev, sglist, nents, dir); } -EXPORT_SYMBOL(dma_sync_sg_for_device); +struct dma_map_ops c6x_dma_ops = { + .alloc = c6x_dma_alloc, + .free = c6x_dma_free, + .map_page = c6x_dma_map_page, + .map_sg = c6x_dma_map_sg, + .sync_single_for_device = c6x_dma_sync_single_for_device, + .sync_single_for_cpu = c6x_dma_sync_single_for_cpu, + .sync_sg_for_device = c6x_dma_sync_sg_for_device, + .sync_sg_for_cpu = c6x_dma_sync_sg_for_cpu, +}; +EXPORT_SYMBOL(c6x_dma_ops); /* Number of entries preallocated for DMA-API debugging */ #define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)

[05/16] c6x: convert to dma_map_ops

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