diff options
author | Christoph Hellwig <hch@lst.de> | 2016-01-20 23:01:47 (GMT) |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-21 01:09:18 (GMT) |
commit | 79387179e2e4fede52326e4c4e26145dbd6b505c (patch) | |
tree | 1ba83f9abcb6592b13ff4539df64211be1fb1de8 /arch/parisc | |
parent | eae075196305549513335c2fc7d5d63712246bfd (diff) | |
download | linux-79387179e2e4fede52326e4c4e26145dbd6b505c.tar.xz |
parisc: convert to dma_map_ops
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Helge Deller <deller@gmx.de>
Acked-by: Helge Deller <deller@gmx.de>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/parisc')
-rw-r--r-- | arch/parisc/Kconfig | 2 | ||||
-rw-r--r-- | arch/parisc/include/asm/dma-mapping.h | 189 | ||||
-rw-r--r-- | arch/parisc/kernel/drivers.c | 2 | ||||
-rw-r--r-- | arch/parisc/kernel/pci-dma.c | 92 |
4 files changed, 64 insertions, 221 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 7c34caf..1489351 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -29,6 +29,8 @@ config PARISC select TTY # Needed for pdc_cons.c select HAVE_DEBUG_STACKOVERFLOW select HAVE_ARCH_AUDITSYSCALL + select ARCH_NO_COHERENT_DMA_MMAP + select HAVE_DMA_ATTRS help The PA-RISC microprocessor is designed by Hewlett-Packard and used diff --git a/arch/parisc/include/asm/dma-mapping.h b/arch/parisc/include/asm/dma-mapping.h index d8d60a5..4de5186 100644 --- a/arch/parisc/include/asm/dma-mapping.h +++ b/arch/parisc/include/asm/dma-mapping.h @@ -1,30 +1,11 @@ #ifndef _PARISC_DMA_MAPPING_H #define _PARISC_DMA_MAPPING_H -#include <linux/mm.h> -#include <linux/scatterlist.h> #include <asm/cacheflush.h> -/* See Documentation/DMA-API-HOWTO.txt */ -struct hppa_dma_ops { - int (*dma_supported)(struct device *dev, u64 mask); - void *(*alloc_consistent)(struct device *dev, size_t size, dma_addr_t *iova, gfp_t flag); - void *(*alloc_noncoherent)(struct device *dev, size_t size, dma_addr_t *iova, gfp_t flag); - void (*free_consistent)(struct device *dev, size_t size, void *vaddr, dma_addr_t iova); - dma_addr_t (*map_single)(struct device *dev, void *addr, size_t size, enum dma_data_direction direction); - void (*unmap_single)(struct device *dev, dma_addr_t iova, size_t size, enum dma_data_direction direction); - int (*map_sg)(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction direction); - void (*unmap_sg)(struct device *dev, struct scatterlist *sg, int nhwents, enum dma_data_direction direction); - void (*dma_sync_single_for_cpu)(struct device *dev, dma_addr_t iova, unsigned long offset, size_t size, enum dma_data_direction direction); - void (*dma_sync_single_for_device)(struct device *dev, dma_addr_t iova, unsigned long offset, size_t size, enum dma_data_direction direction); - void (*dma_sync_sg_for_cpu)(struct device *dev, struct scatterlist *sg, int nelems, enum dma_data_direction direction); - void (*dma_sync_sg_for_device)(struct device *dev, struct scatterlist *sg, int nelems, enum dma_data_direction direction); -}; - /* -** We could live without the hppa_dma_ops indirection if we didn't want -** to support 4 different coherent dma models with one binary (they will -** someday be loadable modules): +** We need to support 4 different coherent dma models with one binary: +** ** I/O MMU consistent method dma_sync behavior ** ============= ====================== ======================= ** a) PA-7x00LC uncachable host memory flush/purge @@ -40,158 +21,22 @@ struct hppa_dma_ops { */ #ifdef CONFIG_PA11 -extern struct hppa_dma_ops pcxl_dma_ops; -extern struct hppa_dma_ops pcx_dma_ops; +extern struct dma_map_ops pcxl_dma_ops; +extern struct dma_map_ops pcx_dma_ops; #endif -extern struct hppa_dma_ops *hppa_dma_ops; - -#define dma_alloc_attrs(d, s, h, f, a) dma_alloc_coherent(d, s, h, f) -#define dma_free_attrs(d, s, h, f, a) dma_free_coherent(d, s, h, f) - -static inline void * -dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, - gfp_t flag) -{ - return hppa_dma_ops->alloc_consistent(dev, size, dma_handle, flag); -} - -static inline void * -dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle, - gfp_t flag) -{ - return hppa_dma_ops->alloc_noncoherent(dev, size, dma_handle, flag); -} - -static inline void -dma_free_coherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) -{ - hppa_dma_ops->free_consistent(dev, size, vaddr, dma_handle); -} - -static inline void -dma_free_noncoherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t dma_handle) -{ - hppa_dma_ops->free_consistent(dev, size, vaddr, dma_handle); -} - -static inline dma_addr_t -dma_map_single(struct device *dev, void *ptr, size_t size, - enum dma_data_direction direction) -{ - return hppa_dma_ops->map_single(dev, ptr, size, direction); -} - -static inline void -dma_unmap_single(struct device *dev, dma_addr_t dma_addr, size_t size, - enum dma_data_direction direction) -{ - hppa_dma_ops->unmap_single(dev, dma_addr, size, direction); -} - -static inline int -dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction direction) -{ - return hppa_dma_ops->map_sg(dev, sg, nents, direction); -} - -static inline void -dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries, - enum dma_data_direction direction) -{ - hppa_dma_ops->unmap_sg(dev, sg, nhwentries, 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 direction) -{ - return dma_map_single(dev, (page_address(page) + (offset)), size, direction); -} - -static inline void -dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size, - enum dma_data_direction direction) -{ - dma_unmap_single(dev, dma_address, size, direction); -} - - -static inline void -dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ - if(hppa_dma_ops->dma_sync_single_for_cpu) - hppa_dma_ops->dma_sync_single_for_cpu(dev, dma_handle, 0, size, direction); -} - -static inline void -dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, size_t size, - enum dma_data_direction direction) -{ - if(hppa_dma_ops->dma_sync_single_for_device) - hppa_dma_ops->dma_sync_single_for_device(dev, dma_handle, 0, size, direction); -} - -static inline void -dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) -{ - if(hppa_dma_ops->dma_sync_single_for_cpu) - hppa_dma_ops->dma_sync_single_for_cpu(dev, dma_handle, offset, size, direction); -} +extern struct dma_map_ops *hppa_dma_ops; -static inline void -dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle, - unsigned long offset, size_t size, - enum dma_data_direction direction) +static inline struct dma_map_ops *get_dma_ops(struct device *dev) { - if(hppa_dma_ops->dma_sync_single_for_device) - hppa_dma_ops->dma_sync_single_for_device(dev, dma_handle, offset, size, direction); -} - -static inline void -dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ - if(hppa_dma_ops->dma_sync_sg_for_cpu) - hppa_dma_ops->dma_sync_sg_for_cpu(dev, sg, nelems, direction); -} - -static inline void -dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems, - enum dma_data_direction direction) -{ - if(hppa_dma_ops->dma_sync_sg_for_device) - hppa_dma_ops->dma_sync_sg_for_device(dev, sg, nelems, direction); -} - -static inline int -dma_supported(struct device *dev, u64 mask) -{ - return hppa_dma_ops->dma_supported(dev, mask); -} - -static inline int -dma_set_mask(struct device *dev, u64 mask) -{ - if(!dev->dma_mask || !dma_supported(dev, mask)) - return -EIO; - - *dev->dma_mask = mask; - - return 0; + return hppa_dma_ops; } static inline void dma_cache_sync(struct device *dev, void *vaddr, size_t size, enum dma_data_direction direction) { - if(hppa_dma_ops->dma_sync_single_for_cpu) + if (hppa_dma_ops->sync_single_for_cpu) flush_kernel_dcache_range((unsigned long)vaddr, size); } @@ -238,22 +83,6 @@ struct parisc_device; void * sba_get_iommu(struct parisc_device *dev); #endif -/* At the moment, we panic on error for IOMMU resource exaustion */ -#define dma_mapping_error(dev, x) 0 - -/* This API cannot be supported on PA-RISC */ -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; -} - -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 diff --git a/arch/parisc/kernel/drivers.c b/arch/parisc/kernel/drivers.c index dba508f..f815066 100644 --- a/arch/parisc/kernel/drivers.c +++ b/arch/parisc/kernel/drivers.c @@ -40,7 +40,7 @@ #include <asm/parisc-device.h> /* See comments in include/asm-parisc/pci.h */ -struct hppa_dma_ops *hppa_dma_ops __read_mostly; +struct dma_map_ops *hppa_dma_ops __read_mostly; EXPORT_SYMBOL(hppa_dma_ops); static struct device root = { diff --git a/arch/parisc/kernel/pci-dma.c b/arch/parisc/kernel/pci-dma.c index b9402c9..a27e492 100644 --- a/arch/parisc/kernel/pci-dma.c +++ b/arch/parisc/kernel/pci-dma.c @@ -413,7 +413,8 @@ pcxl_dma_init(void) __initcall(pcxl_dma_init); -static void * pa11_dma_alloc_consistent (struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag) +static void *pa11_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag, struct dma_attrs *attrs) { unsigned long vaddr; unsigned long paddr; @@ -439,7 +440,8 @@ static void * pa11_dma_alloc_consistent (struct device *dev, size_t size, dma_ad return (void *)vaddr; } -static void pa11_dma_free_consistent (struct device *dev, size_t size, void *vaddr, dma_addr_t dma_handle) +static void pa11_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, struct dma_attrs *attrs) { int order; @@ -450,15 +452,20 @@ static void pa11_dma_free_consistent (struct device *dev, size_t size, void *vad free_pages((unsigned long)__va(dma_handle), order); } -static dma_addr_t pa11_dma_map_single(struct device *dev, void *addr, size_t size, enum dma_data_direction direction) +static dma_addr_t pa11_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction direction, struct dma_attrs *attrs) { + void *addr = page_address(page) + offset; BUG_ON(direction == DMA_NONE); flush_kernel_dcache_range((unsigned long) addr, size); return virt_to_phys(addr); } -static void pa11_dma_unmap_single(struct device *dev, dma_addr_t dma_handle, size_t size, enum dma_data_direction direction) +static void pa11_dma_unmap_page(struct device *dev, dma_addr_t dma_handle, + size_t size, enum dma_data_direction direction, + struct dma_attrs *attrs) { BUG_ON(direction == DMA_NONE); @@ -475,7 +482,9 @@ static void pa11_dma_unmap_single(struct device *dev, dma_addr_t dma_handle, siz return; } -static int pa11_dma_map_sg(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction) +static int pa11_dma_map_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) { int i; struct scatterlist *sg; @@ -492,7 +501,9 @@ static int pa11_dma_map_sg(struct device *dev, struct scatterlist *sglist, int n return nents; } -static void pa11_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction) +static void pa11_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, + int nents, enum dma_data_direction direction, + struct dma_attrs *attrs) { int i; struct scatterlist *sg; @@ -509,18 +520,24 @@ static void pa11_dma_unmap_sg(struct device *dev, struct scatterlist *sglist, in return; } -static void pa11_dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, unsigned long offset, size_t size, enum dma_data_direction direction) +static void pa11_dma_sync_single_for_cpu(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) { BUG_ON(direction == DMA_NONE); - flush_kernel_dcache_range((unsigned long) phys_to_virt(dma_handle) + offset, size); + flush_kernel_dcache_range((unsigned long) phys_to_virt(dma_handle), + size); } -static void pa11_dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle, unsigned long offset, size_t size, enum dma_data_direction direction) +static void pa11_dma_sync_single_for_device(struct device *dev, + dma_addr_t dma_handle, size_t size, + enum dma_data_direction direction) { BUG_ON(direction == DMA_NONE); - flush_kernel_dcache_range((unsigned long) phys_to_virt(dma_handle) + offset, size); + flush_kernel_dcache_range((unsigned long) phys_to_virt(dma_handle), + size); } static void pa11_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist, int nents, enum dma_data_direction direction) @@ -545,32 +562,28 @@ static void pa11_dma_sync_sg_for_device(struct device *dev, struct scatterlist * flush_kernel_vmap_range(sg_virt(sg), sg->length); } -struct hppa_dma_ops pcxl_dma_ops = { +struct dma_map_ops pcxl_dma_ops = { .dma_supported = pa11_dma_supported, - .alloc_consistent = pa11_dma_alloc_consistent, - .alloc_noncoherent = pa11_dma_alloc_consistent, - .free_consistent = pa11_dma_free_consistent, - .map_single = pa11_dma_map_single, - .unmap_single = pa11_dma_unmap_single, + .alloc = pa11_dma_alloc, + .free = pa11_dma_free, + .map_page = pa11_dma_map_page, + .unmap_page = pa11_dma_unmap_page, .map_sg = pa11_dma_map_sg, .unmap_sg = pa11_dma_unmap_sg, - .dma_sync_single_for_cpu = pa11_dma_sync_single_for_cpu, - .dma_sync_single_for_device = pa11_dma_sync_single_for_device, - .dma_sync_sg_for_cpu = pa11_dma_sync_sg_for_cpu, - .dma_sync_sg_for_device = pa11_dma_sync_sg_for_device, + .sync_single_for_cpu = pa11_dma_sync_single_for_cpu, + .sync_single_for_device = pa11_dma_sync_single_for_device, + .sync_sg_for_cpu = pa11_dma_sync_sg_for_cpu, + .sync_sg_for_device = pa11_dma_sync_sg_for_device, }; -static void *fail_alloc_consistent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag) -{ - return NULL; -} - -static void *pa11_dma_alloc_noncoherent(struct device *dev, size_t size, - dma_addr_t *dma_handle, gfp_t flag) +static void *pcx_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t flag, struct dma_attrs *attrs) { void *addr; + if (!dma_get_attr(DMA_ATTR_NON_CONSISTENT, attrs)) + return NULL; + addr = (void *)__get_free_pages(flag, get_order(size)); if (addr) *dma_handle = (dma_addr_t)virt_to_phys(addr); @@ -578,24 +591,23 @@ static void *pa11_dma_alloc_noncoherent(struct device *dev, size_t size, return addr; } -static void pa11_dma_free_noncoherent(struct device *dev, size_t size, - void *vaddr, dma_addr_t iova) +static void pcx_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t iova, struct dma_attrs *attrs) { free_pages((unsigned long)vaddr, get_order(size)); return; } -struct hppa_dma_ops pcx_dma_ops = { +struct dma_map_ops pcx_dma_ops = { .dma_supported = pa11_dma_supported, - .alloc_consistent = fail_alloc_consistent, - .alloc_noncoherent = pa11_dma_alloc_noncoherent, - .free_consistent = pa11_dma_free_noncoherent, - .map_single = pa11_dma_map_single, - .unmap_single = pa11_dma_unmap_single, + .alloc = pcx_dma_alloc, + .free = pcx_dma_free, + .map_page = pa11_dma_map_page, + .unmap_page = pa11_dma_unmap_page, .map_sg = pa11_dma_map_sg, .unmap_sg = pa11_dma_unmap_sg, - .dma_sync_single_for_cpu = pa11_dma_sync_single_for_cpu, - .dma_sync_single_for_device = pa11_dma_sync_single_for_device, - .dma_sync_sg_for_cpu = pa11_dma_sync_sg_for_cpu, - .dma_sync_sg_for_device = pa11_dma_sync_sg_for_device, + .sync_single_for_cpu = pa11_dma_sync_single_for_cpu, + .sync_single_for_device = pa11_dma_sync_single_for_device, + .sync_sg_for_cpu = pa11_dma_sync_sg_for_cpu, + .sync_sg_for_device = pa11_dma_sync_sg_for_device, }; 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