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https://github.com/followmsi/android_kernel_google_msm.git
synced 2024-09-22 12:42:50 +00:00
Merge branch 'core/iommu' into core/urgent
Conflicts: lib/swiotlb.c
This commit is contained in:
commit
46483d10e5
5 changed files with 101 additions and 210 deletions
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@ -2,44 +2,7 @@
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#define ASM_IA64__SWIOTLB_H
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#define ASM_IA64__SWIOTLB_H
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#include <linux/dma-mapping.h>
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#include <linux/dma-mapping.h>
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#include <linux/swiotlb.h>
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/* SWIOTLB interface */
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extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr,
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size_t size, int dir);
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extern void *swiotlb_alloc_coherent(struct device *hwdev, size_t size,
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dma_addr_t *dma_handle, gfp_t flags);
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extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
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size_t size, int dir);
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extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
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dma_addr_t dev_addr,
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size_t size, int dir);
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extern void swiotlb_sync_single_for_device(struct device *hwdev,
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dma_addr_t dev_addr,
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size_t size, int dir);
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extern void swiotlb_sync_single_range_for_cpu(struct device *hwdev,
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dma_addr_t dev_addr,
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unsigned long offset,
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size_t size, int dir);
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extern void swiotlb_sync_single_range_for_device(struct device *hwdev,
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dma_addr_t dev_addr,
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unsigned long offset,
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size_t size, int dir);
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extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
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struct scatterlist *sg, int nelems,
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int dir);
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extern void swiotlb_sync_sg_for_device(struct device *hwdev,
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struct scatterlist *sg, int nelems,
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int dir);
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extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
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int nents, int direction);
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extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
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int nents, int direction);
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extern int swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
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extern void swiotlb_free_coherent(struct device *hwdev, size_t size,
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void *vaddr, dma_addr_t dma_handle);
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extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
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extern void swiotlb_init(void);
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extern int swiotlb_force;
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extern int swiotlb_force;
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@ -1,46 +1,10 @@
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#ifndef _ASM_X86_SWIOTLB_H
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#ifndef _ASM_X86_SWIOTLB_H
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#define _ASM_X86_SWIOTLB_H
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#define _ASM_X86_SWIOTLB_H
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#include <asm/dma-mapping.h>
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#include <linux/swiotlb.h>
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/* SWIOTLB interface */
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/* SWIOTLB interface */
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extern dma_addr_t swiotlb_map_single(struct device *hwdev, void *ptr,
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size_t size, int dir);
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extern void *swiotlb_alloc_coherent(struct device *hwdev, size_t size,
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dma_addr_t *dma_handle, gfp_t flags);
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extern void swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr,
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size_t size, int dir);
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extern void swiotlb_sync_single_for_cpu(struct device *hwdev,
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dma_addr_t dev_addr,
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size_t size, int dir);
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extern void swiotlb_sync_single_for_device(struct device *hwdev,
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dma_addr_t dev_addr,
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size_t size, int dir);
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extern void swiotlb_sync_single_range_for_cpu(struct device *hwdev,
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dma_addr_t dev_addr,
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unsigned long offset,
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size_t size, int dir);
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extern void swiotlb_sync_single_range_for_device(struct device *hwdev,
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dma_addr_t dev_addr,
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unsigned long offset,
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size_t size, int dir);
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extern void swiotlb_sync_sg_for_cpu(struct device *hwdev,
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struct scatterlist *sg, int nelems,
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int dir);
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extern void swiotlb_sync_sg_for_device(struct device *hwdev,
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struct scatterlist *sg, int nelems,
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int dir);
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extern int swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg,
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int nents, int direction);
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extern void swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg,
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int nents, int direction);
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extern int swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr);
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extern void swiotlb_free_coherent(struct device *hwdev, size_t size,
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void *vaddr, dma_addr_t dma_handle);
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extern int swiotlb_dma_supported(struct device *hwdev, u64 mask);
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extern void swiotlb_init(void);
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extern int swiotlb_force;
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extern int swiotlb_force;
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#ifdef CONFIG_SWIOTLB
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#ifdef CONFIG_SWIOTLB
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@ -23,7 +23,7 @@ void *swiotlb_alloc(unsigned order, unsigned long nslabs)
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return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order);
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return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order);
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}
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}
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dma_addr_t swiotlb_phys_to_bus(phys_addr_t paddr)
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dma_addr_t swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr)
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{
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{
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return paddr;
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return paddr;
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}
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}
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@ -27,7 +27,8 @@ swiotlb_init(void);
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extern void *swiotlb_alloc_boot(size_t bytes, unsigned long nslabs);
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extern void *swiotlb_alloc_boot(size_t bytes, unsigned long nslabs);
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extern void *swiotlb_alloc(unsigned order, unsigned long nslabs);
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extern void *swiotlb_alloc(unsigned order, unsigned long nslabs);
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extern dma_addr_t swiotlb_phys_to_bus(phys_addr_t address);
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extern dma_addr_t swiotlb_phys_to_bus(struct device *hwdev,
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phys_addr_t address);
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extern phys_addr_t swiotlb_bus_to_phys(dma_addr_t address);
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extern phys_addr_t swiotlb_bus_to_phys(dma_addr_t address);
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extern int swiotlb_arch_range_needs_mapping(void *ptr, size_t size);
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extern int swiotlb_arch_range_needs_mapping(void *ptr, size_t size);
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229
lib/swiotlb.c
229
lib/swiotlb.c
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@ -14,6 +14,7 @@
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* 04/07/.. ak Better overflow handling. Assorted fixes.
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* 04/07/.. ak Better overflow handling. Assorted fixes.
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* 05/09/10 linville Add support for syncing ranges, support syncing for
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* 05/09/10 linville Add support for syncing ranges, support syncing for
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* DMA_BIDIRECTIONAL mappings, miscellaneous cleanup.
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* DMA_BIDIRECTIONAL mappings, miscellaneous cleanup.
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* 08/12/11 beckyb Add highmem support
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*/
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*/
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#include <linux/cache.h>
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#include <linux/cache.h>
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@ -21,8 +22,9 @@
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#include <linux/mm.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/module.h>
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#include <linux/spinlock.h>
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#include <linux/spinlock.h>
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#include <linux/swiotlb.h>
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#include <linux/string.h>
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#include <linux/string.h>
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#include <linux/swiotlb.h>
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#include <linux/pfn.h>
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#include <linux/types.h>
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#include <linux/types.h>
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#include <linux/ctype.h>
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#include <linux/ctype.h>
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#include <linux/highmem.h>
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#include <linux/highmem.h>
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@ -88,10 +90,7 @@ static unsigned int io_tlb_index;
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* We need to save away the original address corresponding to a mapped entry
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* We need to save away the original address corresponding to a mapped entry
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* for the sync operations.
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* for the sync operations.
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*/
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*/
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static struct swiotlb_phys_addr {
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static phys_addr_t *io_tlb_orig_addr;
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struct page *page;
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unsigned int offset;
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} *io_tlb_orig_addr;
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/*
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/*
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* Protect the above data structures in the map and unmap calls
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* Protect the above data structures in the map and unmap calls
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@ -125,7 +124,7 @@ void * __weak swiotlb_alloc(unsigned order, unsigned long nslabs)
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return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order);
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return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order);
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}
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}
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dma_addr_t __weak swiotlb_phys_to_bus(phys_addr_t paddr)
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dma_addr_t __weak swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr)
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{
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{
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return paddr;
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return paddr;
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}
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}
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@ -135,9 +134,10 @@ phys_addr_t __weak swiotlb_bus_to_phys(dma_addr_t baddr)
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return baddr;
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return baddr;
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}
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}
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static dma_addr_t swiotlb_virt_to_bus(volatile void *address)
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static dma_addr_t swiotlb_virt_to_bus(struct device *hwdev,
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volatile void *address)
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{
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{
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return swiotlb_phys_to_bus(virt_to_phys(address));
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return swiotlb_phys_to_bus(hwdev, virt_to_phys(address));
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}
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}
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static void *swiotlb_bus_to_virt(dma_addr_t address)
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static void *swiotlb_bus_to_virt(dma_addr_t address)
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@ -150,35 +150,18 @@ int __weak swiotlb_arch_range_needs_mapping(void *ptr, size_t size)
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return 0;
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return 0;
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}
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}
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static dma_addr_t swiotlb_sg_to_bus(struct scatterlist *sg)
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{
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return swiotlb_phys_to_bus(page_to_phys(sg_page(sg)) + sg->offset);
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}
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static void swiotlb_print_info(unsigned long bytes)
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static void swiotlb_print_info(unsigned long bytes)
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{
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{
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phys_addr_t pstart, pend;
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phys_addr_t pstart, pend;
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dma_addr_t bstart, bend;
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pstart = virt_to_phys(io_tlb_start);
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pstart = virt_to_phys(io_tlb_start);
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pend = virt_to_phys(io_tlb_end);
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pend = virt_to_phys(io_tlb_end);
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bstart = swiotlb_phys_to_bus(pstart);
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bend = swiotlb_phys_to_bus(pend);
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printk(KERN_INFO "Placing %luMB software IO TLB between %p - %p\n",
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printk(KERN_INFO "Placing %luMB software IO TLB between %p - %p\n",
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bytes >> 20, io_tlb_start, io_tlb_end);
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bytes >> 20, io_tlb_start, io_tlb_end);
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if (pstart != bstart || pend != bend)
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printk(KERN_INFO "software IO TLB at phys %#llx - %#llx\n",
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printk(KERN_INFO "software IO TLB at phys %#llx - %#llx"
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(unsigned long long)pstart,
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" bus %#llx - %#llx\n",
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(unsigned long long)pend);
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(unsigned long long)pstart,
|
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(unsigned long long)pend,
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(unsigned long long)bstart,
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(unsigned long long)bend);
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else
|
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printk(KERN_INFO "software IO TLB at phys %#llx - %#llx\n",
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(unsigned long long)pstart,
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(unsigned long long)pend);
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}
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}
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/*
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/*
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@ -214,7 +197,7 @@ swiotlb_init_with_default_size(size_t default_size)
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for (i = 0; i < io_tlb_nslabs; i++)
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for (i = 0; i < io_tlb_nslabs; i++)
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io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE);
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io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE);
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io_tlb_index = 0;
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io_tlb_index = 0;
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io_tlb_orig_addr = alloc_bootmem(io_tlb_nslabs * sizeof(struct swiotlb_phys_addr));
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io_tlb_orig_addr = alloc_bootmem(io_tlb_nslabs * sizeof(phys_addr_t));
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|
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/*
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/*
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||||||
* Get the overflow emergency buffer
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* Get the overflow emergency buffer
|
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|
@ -288,12 +271,14 @@ swiotlb_late_init_with_default_size(size_t default_size)
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io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE);
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io_tlb_list[i] = IO_TLB_SEGSIZE - OFFSET(i, IO_TLB_SEGSIZE);
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io_tlb_index = 0;
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io_tlb_index = 0;
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|
|
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io_tlb_orig_addr = (struct swiotlb_phys_addr *)__get_free_pages(GFP_KERNEL,
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io_tlb_orig_addr = (phys_addr_t *)
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get_order(io_tlb_nslabs * sizeof(struct swiotlb_phys_addr)));
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__get_free_pages(GFP_KERNEL,
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get_order(io_tlb_nslabs *
|
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|
sizeof(phys_addr_t)));
|
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if (!io_tlb_orig_addr)
|
if (!io_tlb_orig_addr)
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goto cleanup3;
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goto cleanup3;
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|
|
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memset(io_tlb_orig_addr, 0, io_tlb_nslabs * sizeof(struct swiotlb_phys_addr));
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memset(io_tlb_orig_addr, 0, io_tlb_nslabs * sizeof(phys_addr_t));
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||||||
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/*
|
/*
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* Get the overflow emergency buffer
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* Get the overflow emergency buffer
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||||||
|
@ -308,8 +293,8 @@ swiotlb_late_init_with_default_size(size_t default_size)
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return 0;
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return 0;
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cleanup4:
|
cleanup4:
|
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free_pages((unsigned long)io_tlb_orig_addr, get_order(io_tlb_nslabs *
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free_pages((unsigned long)io_tlb_orig_addr,
|
||||||
sizeof(char *)));
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get_order(io_tlb_nslabs * sizeof(phys_addr_t)));
|
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io_tlb_orig_addr = NULL;
|
io_tlb_orig_addr = NULL;
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cleanup3:
|
cleanup3:
|
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free_pages((unsigned long)io_tlb_list, get_order(io_tlb_nslabs *
|
free_pages((unsigned long)io_tlb_list, get_order(io_tlb_nslabs *
|
||||||
|
@ -340,51 +325,44 @@ static int is_swiotlb_buffer(char *addr)
|
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return addr >= io_tlb_start && addr < io_tlb_end;
|
return addr >= io_tlb_start && addr < io_tlb_end;
|
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}
|
}
|
||||||
|
|
||||||
static struct swiotlb_phys_addr swiotlb_bus_to_phys_addr(char *dma_addr)
|
/*
|
||||||
|
* Bounce: copy the swiotlb buffer back to the original dma location
|
||||||
|
*/
|
||||||
|
static void swiotlb_bounce(phys_addr_t phys, char *dma_addr, size_t size,
|
||||||
|
enum dma_data_direction dir)
|
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{
|
{
|
||||||
int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
|
unsigned long pfn = PFN_DOWN(phys);
|
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struct swiotlb_phys_addr buffer = io_tlb_orig_addr[index];
|
|
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buffer.offset += (long)dma_addr & ((1 << IO_TLB_SHIFT) - 1);
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|
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buffer.page += buffer.offset >> PAGE_SHIFT;
|
|
||||||
buffer.offset &= PAGE_SIZE - 1;
|
|
||||||
return buffer;
|
|
||||||
}
|
|
||||||
|
|
||||||
static void
|
if (PageHighMem(pfn_to_page(pfn))) {
|
||||||
__sync_single(struct swiotlb_phys_addr buffer, char *dma_addr, size_t size, int dir)
|
/* The buffer does not have a mapping. Map it in and copy */
|
||||||
{
|
unsigned int offset = phys & ~PAGE_MASK;
|
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if (PageHighMem(buffer.page)) {
|
char *buffer;
|
||||||
size_t len, bytes;
|
unsigned int sz = 0;
|
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char *dev, *host, *kmp;
|
unsigned long flags;
|
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|
|
||||||
len = size;
|
while (size) {
|
||||||
while (len != 0) {
|
sz = min(PAGE_SIZE - offset, size);
|
||||||
unsigned long flags;
|
|
||||||
|
|
||||||
bytes = len;
|
local_irq_save(flags);
|
||||||
if ((bytes + buffer.offset) > PAGE_SIZE)
|
buffer = kmap_atomic(pfn_to_page(pfn),
|
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bytes = PAGE_SIZE - buffer.offset;
|
KM_BOUNCE_READ);
|
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local_irq_save(flags); /* protects KM_BOUNCE_READ */
|
if (dir == DMA_TO_DEVICE)
|
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kmp = kmap_atomic(buffer.page, KM_BOUNCE_READ);
|
memcpy(dma_addr, buffer + offset, sz);
|
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dev = dma_addr + size - len;
|
|
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host = kmp + buffer.offset;
|
|
||||||
if (dir == DMA_FROM_DEVICE)
|
|
||||||
memcpy(host, dev, bytes);
|
|
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else
|
else
|
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memcpy(dev, host, bytes);
|
memcpy(buffer + offset, dma_addr, sz);
|
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kunmap_atomic(kmp, KM_BOUNCE_READ);
|
kunmap_atomic(buffer, KM_BOUNCE_READ);
|
||||||
local_irq_restore(flags);
|
local_irq_restore(flags);
|
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len -= bytes;
|
|
||||||
buffer.page++;
|
size -= sz;
|
||||||
buffer.offset = 0;
|
pfn++;
|
||||||
|
dma_addr += sz;
|
||||||
|
offset = 0;
|
||||||
}
|
}
|
||||||
} else {
|
} else {
|
||||||
void *v = page_address(buffer.page) + buffer.offset;
|
|
||||||
|
|
||||||
if (dir == DMA_TO_DEVICE)
|
if (dir == DMA_TO_DEVICE)
|
||||||
memcpy(dma_addr, v, size);
|
memcpy(dma_addr, phys_to_virt(phys), size);
|
||||||
else
|
else
|
||||||
memcpy(v, dma_addr, size);
|
memcpy(phys_to_virt(phys), dma_addr, size);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -392,7 +370,7 @@ __sync_single(struct swiotlb_phys_addr buffer, char *dma_addr, size_t size, int
|
||||||
* Allocates bounce buffer and returns its kernel virtual address.
|
* Allocates bounce buffer and returns its kernel virtual address.
|
||||||
*/
|
*/
|
||||||
static void *
|
static void *
|
||||||
map_single(struct device *hwdev, struct swiotlb_phys_addr buffer, size_t size, int dir)
|
map_single(struct device *hwdev, phys_addr_t phys, size_t size, int dir)
|
||||||
{
|
{
|
||||||
unsigned long flags;
|
unsigned long flags;
|
||||||
char *dma_addr;
|
char *dma_addr;
|
||||||
|
@ -402,10 +380,9 @@ map_single(struct device *hwdev, struct swiotlb_phys_addr buffer, size_t size, i
|
||||||
unsigned long mask;
|
unsigned long mask;
|
||||||
unsigned long offset_slots;
|
unsigned long offset_slots;
|
||||||
unsigned long max_slots;
|
unsigned long max_slots;
|
||||||
struct swiotlb_phys_addr slot_buf;
|
|
||||||
|
|
||||||
mask = dma_get_seg_boundary(hwdev);
|
mask = dma_get_seg_boundary(hwdev);
|
||||||
start_dma_addr = swiotlb_virt_to_bus(io_tlb_start) & mask;
|
start_dma_addr = swiotlb_virt_to_bus(hwdev, io_tlb_start) & mask;
|
||||||
|
|
||||||
offset_slots = ALIGN(start_dma_addr, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
|
offset_slots = ALIGN(start_dma_addr, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
|
||||||
|
|
||||||
|
@ -487,15 +464,10 @@ found:
|
||||||
* This is needed when we sync the memory. Then we sync the buffer if
|
* This is needed when we sync the memory. Then we sync the buffer if
|
||||||
* needed.
|
* needed.
|
||||||
*/
|
*/
|
||||||
slot_buf = buffer;
|
for (i = 0; i < nslots; i++)
|
||||||
for (i = 0; i < nslots; i++) {
|
io_tlb_orig_addr[index+i] = phys + (i << IO_TLB_SHIFT);
|
||||||
slot_buf.page += slot_buf.offset >> PAGE_SHIFT;
|
|
||||||
slot_buf.offset &= PAGE_SIZE - 1;
|
|
||||||
io_tlb_orig_addr[index+i] = slot_buf;
|
|
||||||
slot_buf.offset += 1 << IO_TLB_SHIFT;
|
|
||||||
}
|
|
||||||
if (dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL)
|
if (dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL)
|
||||||
__sync_single(buffer, dma_addr, size, DMA_TO_DEVICE);
|
swiotlb_bounce(phys, dma_addr, size, DMA_TO_DEVICE);
|
||||||
|
|
||||||
return dma_addr;
|
return dma_addr;
|
||||||
}
|
}
|
||||||
|
@ -509,17 +481,13 @@ unmap_single(struct device *hwdev, char *dma_addr, size_t size, int dir)
|
||||||
unsigned long flags;
|
unsigned long flags;
|
||||||
int i, count, nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
|
int i, count, nslots = ALIGN(size, 1 << IO_TLB_SHIFT) >> IO_TLB_SHIFT;
|
||||||
int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
|
int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
|
||||||
struct swiotlb_phys_addr buffer = swiotlb_bus_to_phys_addr(dma_addr);
|
phys_addr_t phys = io_tlb_orig_addr[index];
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* First, sync the memory before unmapping the entry
|
* First, sync the memory before unmapping the entry
|
||||||
*/
|
*/
|
||||||
if ((dir == DMA_FROM_DEVICE) || (dir == DMA_BIDIRECTIONAL))
|
if (phys && ((dir == DMA_FROM_DEVICE) || (dir == DMA_BIDIRECTIONAL)))
|
||||||
/*
|
swiotlb_bounce(phys, dma_addr, size, DMA_FROM_DEVICE);
|
||||||
* bounce... copy the data back into the original buffer * and
|
|
||||||
* delete the bounce buffer.
|
|
||||||
*/
|
|
||||||
__sync_single(buffer, dma_addr, size, DMA_FROM_DEVICE);
|
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Return the buffer to the free list by setting the corresponding
|
* Return the buffer to the free list by setting the corresponding
|
||||||
|
@ -551,18 +519,21 @@ static void
|
||||||
sync_single(struct device *hwdev, char *dma_addr, size_t size,
|
sync_single(struct device *hwdev, char *dma_addr, size_t size,
|
||||||
int dir, int target)
|
int dir, int target)
|
||||||
{
|
{
|
||||||
struct swiotlb_phys_addr buffer = swiotlb_bus_to_phys_addr(dma_addr);
|
int index = (dma_addr - io_tlb_start) >> IO_TLB_SHIFT;
|
||||||
|
phys_addr_t phys = io_tlb_orig_addr[index];
|
||||||
|
|
||||||
|
phys += ((unsigned long)dma_addr & ((1 << IO_TLB_SHIFT) - 1));
|
||||||
|
|
||||||
switch (target) {
|
switch (target) {
|
||||||
case SYNC_FOR_CPU:
|
case SYNC_FOR_CPU:
|
||||||
if (likely(dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL))
|
if (likely(dir == DMA_FROM_DEVICE || dir == DMA_BIDIRECTIONAL))
|
||||||
__sync_single(buffer, dma_addr, size, DMA_FROM_DEVICE);
|
swiotlb_bounce(phys, dma_addr, size, DMA_FROM_DEVICE);
|
||||||
else
|
else
|
||||||
BUG_ON(dir != DMA_TO_DEVICE);
|
BUG_ON(dir != DMA_TO_DEVICE);
|
||||||
break;
|
break;
|
||||||
case SYNC_FOR_DEVICE:
|
case SYNC_FOR_DEVICE:
|
||||||
if (likely(dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL))
|
if (likely(dir == DMA_TO_DEVICE || dir == DMA_BIDIRECTIONAL))
|
||||||
__sync_single(buffer, dma_addr, size, DMA_TO_DEVICE);
|
swiotlb_bounce(phys, dma_addr, size, DMA_TO_DEVICE);
|
||||||
else
|
else
|
||||||
BUG_ON(dir != DMA_FROM_DEVICE);
|
BUG_ON(dir != DMA_FROM_DEVICE);
|
||||||
break;
|
break;
|
||||||
|
@ -584,7 +555,9 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
|
||||||
dma_mask = hwdev->coherent_dma_mask;
|
dma_mask = hwdev->coherent_dma_mask;
|
||||||
|
|
||||||
ret = (void *)__get_free_pages(flags, order);
|
ret = (void *)__get_free_pages(flags, order);
|
||||||
if (ret && !is_buffer_dma_capable(dma_mask, swiotlb_virt_to_bus(ret), size)) {
|
if (ret &&
|
||||||
|
!is_buffer_dma_capable(dma_mask, swiotlb_virt_to_bus(hwdev, ret),
|
||||||
|
size)) {
|
||||||
/*
|
/*
|
||||||
* The allocated memory isn't reachable by the device.
|
* The allocated memory isn't reachable by the device.
|
||||||
* Fall back on swiotlb_map_single().
|
* Fall back on swiotlb_map_single().
|
||||||
|
@ -599,16 +572,13 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
|
||||||
* swiotlb_map_single(), which will grab memory from
|
* swiotlb_map_single(), which will grab memory from
|
||||||
* the lowest available address range.
|
* the lowest available address range.
|
||||||
*/
|
*/
|
||||||
struct swiotlb_phys_addr buffer;
|
ret = map_single(hwdev, 0, size, DMA_FROM_DEVICE);
|
||||||
buffer.page = virt_to_page(NULL);
|
|
||||||
buffer.offset = 0;
|
|
||||||
ret = map_single(hwdev, buffer, size, DMA_FROM_DEVICE);
|
|
||||||
if (!ret)
|
if (!ret)
|
||||||
return NULL;
|
return NULL;
|
||||||
}
|
}
|
||||||
|
|
||||||
memset(ret, 0, size);
|
memset(ret, 0, size);
|
||||||
dev_addr = swiotlb_virt_to_bus(ret);
|
dev_addr = swiotlb_virt_to_bus(hwdev, ret);
|
||||||
|
|
||||||
/* Confirm address can be DMA'd by device */
|
/* Confirm address can be DMA'd by device */
|
||||||
if (!is_buffer_dma_capable(dma_mask, dev_addr, size)) {
|
if (!is_buffer_dma_capable(dma_mask, dev_addr, size)) {
|
||||||
|
@ -623,6 +593,7 @@ swiotlb_alloc_coherent(struct device *hwdev, size_t size,
|
||||||
*dma_handle = dev_addr;
|
*dma_handle = dev_addr;
|
||||||
return ret;
|
return ret;
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL(swiotlb_alloc_coherent);
|
||||||
|
|
||||||
void
|
void
|
||||||
swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
|
swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
|
||||||
|
@ -635,6 +606,7 @@ swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
|
||||||
/* DMA_TO_DEVICE to avoid memcpy in unmap_single */
|
/* DMA_TO_DEVICE to avoid memcpy in unmap_single */
|
||||||
unmap_single(hwdev, vaddr, size, DMA_TO_DEVICE);
|
unmap_single(hwdev, vaddr, size, DMA_TO_DEVICE);
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL(swiotlb_free_coherent);
|
||||||
|
|
||||||
static void
|
static void
|
||||||
swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
|
swiotlb_full(struct device *dev, size_t size, int dir, int do_panic)
|
||||||
|
@ -668,9 +640,8 @@ dma_addr_t
|
||||||
swiotlb_map_single_attrs(struct device *hwdev, void *ptr, size_t size,
|
swiotlb_map_single_attrs(struct device *hwdev, void *ptr, size_t size,
|
||||||
int dir, struct dma_attrs *attrs)
|
int dir, struct dma_attrs *attrs)
|
||||||
{
|
{
|
||||||
dma_addr_t dev_addr = swiotlb_virt_to_bus(ptr);
|
dma_addr_t dev_addr = swiotlb_virt_to_bus(hwdev, ptr);
|
||||||
void *map;
|
void *map;
|
||||||
struct swiotlb_phys_addr buffer;
|
|
||||||
|
|
||||||
BUG_ON(dir == DMA_NONE);
|
BUG_ON(dir == DMA_NONE);
|
||||||
/*
|
/*
|
||||||
|
@ -685,15 +656,13 @@ swiotlb_map_single_attrs(struct device *hwdev, void *ptr, size_t size,
|
||||||
/*
|
/*
|
||||||
* Oh well, have to allocate and map a bounce buffer.
|
* Oh well, have to allocate and map a bounce buffer.
|
||||||
*/
|
*/
|
||||||
buffer.page = virt_to_page(ptr);
|
map = map_single(hwdev, virt_to_phys(ptr), size, dir);
|
||||||
buffer.offset = (unsigned long)ptr & ~PAGE_MASK;
|
|
||||||
map = map_single(hwdev, buffer, size, dir);
|
|
||||||
if (!map) {
|
if (!map) {
|
||||||
swiotlb_full(hwdev, size, dir, 1);
|
swiotlb_full(hwdev, size, dir, 1);
|
||||||
map = io_tlb_overflow_buffer;
|
map = io_tlb_overflow_buffer;
|
||||||
}
|
}
|
||||||
|
|
||||||
dev_addr = swiotlb_virt_to_bus(map);
|
dev_addr = swiotlb_virt_to_bus(hwdev, map);
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Ensure that the address returned is DMA'ble
|
* Ensure that the address returned is DMA'ble
|
||||||
|
@ -710,6 +679,7 @@ swiotlb_map_single(struct device *hwdev, void *ptr, size_t size, int dir)
|
||||||
{
|
{
|
||||||
return swiotlb_map_single_attrs(hwdev, ptr, size, dir, NULL);
|
return swiotlb_map_single_attrs(hwdev, ptr, size, dir, NULL);
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL(swiotlb_map_single);
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Unmap a single streaming mode DMA translation. The dma_addr and size must
|
* Unmap a single streaming mode DMA translation. The dma_addr and size must
|
||||||
|
@ -739,6 +709,8 @@ swiotlb_unmap_single(struct device *hwdev, dma_addr_t dev_addr, size_t size,
|
||||||
{
|
{
|
||||||
return swiotlb_unmap_single_attrs(hwdev, dev_addr, size, dir, NULL);
|
return swiotlb_unmap_single_attrs(hwdev, dev_addr, size, dir, NULL);
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL(swiotlb_unmap_single);
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Make physical memory consistent for a single streaming mode DMA translation
|
* Make physical memory consistent for a single streaming mode DMA translation
|
||||||
* after a transfer.
|
* after a transfer.
|
||||||
|
@ -768,6 +740,7 @@ swiotlb_sync_single_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
|
||||||
{
|
{
|
||||||
swiotlb_sync_single(hwdev, dev_addr, size, dir, SYNC_FOR_CPU);
|
swiotlb_sync_single(hwdev, dev_addr, size, dir, SYNC_FOR_CPU);
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL(swiotlb_sync_single_for_cpu);
|
||||||
|
|
||||||
void
|
void
|
||||||
swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
|
swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
|
||||||
|
@ -775,6 +748,7 @@ swiotlb_sync_single_for_device(struct device *hwdev, dma_addr_t dev_addr,
|
||||||
{
|
{
|
||||||
swiotlb_sync_single(hwdev, dev_addr, size, dir, SYNC_FOR_DEVICE);
|
swiotlb_sync_single(hwdev, dev_addr, size, dir, SYNC_FOR_DEVICE);
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL(swiotlb_sync_single_for_device);
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Same as above, but for a sub-range of the mapping.
|
* Same as above, but for a sub-range of the mapping.
|
||||||
|
@ -800,6 +774,7 @@ swiotlb_sync_single_range_for_cpu(struct device *hwdev, dma_addr_t dev_addr,
|
||||||
swiotlb_sync_single_range(hwdev, dev_addr, offset, size, dir,
|
swiotlb_sync_single_range(hwdev, dev_addr, offset, size, dir,
|
||||||
SYNC_FOR_CPU);
|
SYNC_FOR_CPU);
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL_GPL(swiotlb_sync_single_range_for_cpu);
|
||||||
|
|
||||||
void
|
void
|
||||||
swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
|
swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
|
||||||
|
@ -808,9 +783,8 @@ swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr,
|
||||||
swiotlb_sync_single_range(hwdev, dev_addr, offset, size, dir,
|
swiotlb_sync_single_range(hwdev, dev_addr, offset, size, dir,
|
||||||
SYNC_FOR_DEVICE);
|
SYNC_FOR_DEVICE);
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL_GPL(swiotlb_sync_single_range_for_device);
|
||||||
|
|
||||||
void swiotlb_unmap_sg_attrs(struct device *, struct scatterlist *, int, int,
|
|
||||||
struct dma_attrs *);
|
|
||||||
/*
|
/*
|
||||||
* Map a set of buffers described by scatterlist in streaming mode for DMA.
|
* Map a set of buffers described by scatterlist in streaming mode for DMA.
|
||||||
* This is the scatter-gather version of the above swiotlb_map_single
|
* This is the scatter-gather version of the above swiotlb_map_single
|
||||||
|
@ -832,20 +806,18 @@ swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems,
|
||||||
int dir, struct dma_attrs *attrs)
|
int dir, struct dma_attrs *attrs)
|
||||||
{
|
{
|
||||||
struct scatterlist *sg;
|
struct scatterlist *sg;
|
||||||
struct swiotlb_phys_addr buffer;
|
|
||||||
dma_addr_t dev_addr;
|
|
||||||
int i;
|
int i;
|
||||||
|
|
||||||
BUG_ON(dir == DMA_NONE);
|
BUG_ON(dir == DMA_NONE);
|
||||||
|
|
||||||
for_each_sg(sgl, sg, nelems, i) {
|
for_each_sg(sgl, sg, nelems, i) {
|
||||||
dev_addr = swiotlb_sg_to_bus(sg);
|
void *addr = sg_virt(sg);
|
||||||
if (range_needs_mapping(sg_virt(sg), sg->length) ||
|
dma_addr_t dev_addr = swiotlb_virt_to_bus(hwdev, addr);
|
||||||
|
|
||||||
|
if (range_needs_mapping(addr, sg->length) ||
|
||||||
address_needs_mapping(hwdev, dev_addr, sg->length)) {
|
address_needs_mapping(hwdev, dev_addr, sg->length)) {
|
||||||
void *map;
|
void *map = map_single(hwdev, sg_phys(sg),
|
||||||
buffer.page = sg_page(sg);
|
sg->length, dir);
|
||||||
buffer.offset = sg->offset;
|
|
||||||
map = map_single(hwdev, buffer, sg->length, dir);
|
|
||||||
if (!map) {
|
if (!map) {
|
||||||
/* Don't panic here, we expect map_sg users
|
/* Don't panic here, we expect map_sg users
|
||||||
to do proper error handling. */
|
to do proper error handling. */
|
||||||
|
@ -855,7 +827,7 @@ swiotlb_map_sg_attrs(struct device *hwdev, struct scatterlist *sgl, int nelems,
|
||||||
sgl[0].dma_length = 0;
|
sgl[0].dma_length = 0;
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
sg->dma_address = swiotlb_virt_to_bus(map);
|
sg->dma_address = swiotlb_virt_to_bus(hwdev, map);
|
||||||
} else
|
} else
|
||||||
sg->dma_address = dev_addr;
|
sg->dma_address = dev_addr;
|
||||||
sg->dma_length = sg->length;
|
sg->dma_length = sg->length;
|
||||||
|
@ -870,6 +842,7 @@ swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
|
||||||
{
|
{
|
||||||
return swiotlb_map_sg_attrs(hwdev, sgl, nelems, dir, NULL);
|
return swiotlb_map_sg_attrs(hwdev, sgl, nelems, dir, NULL);
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL(swiotlb_map_sg);
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Unmap a set of streaming mode DMA translations. Again, cpu read rules
|
* Unmap a set of streaming mode DMA translations. Again, cpu read rules
|
||||||
|
@ -885,11 +858,11 @@ swiotlb_unmap_sg_attrs(struct device *hwdev, struct scatterlist *sgl,
|
||||||
BUG_ON(dir == DMA_NONE);
|
BUG_ON(dir == DMA_NONE);
|
||||||
|
|
||||||
for_each_sg(sgl, sg, nelems, i) {
|
for_each_sg(sgl, sg, nelems, i) {
|
||||||
if (sg->dma_address != swiotlb_sg_to_bus(sg))
|
if (sg->dma_address != swiotlb_virt_to_bus(hwdev, sg_virt(sg)))
|
||||||
unmap_single(hwdev, swiotlb_bus_to_virt(sg->dma_address),
|
unmap_single(hwdev, swiotlb_bus_to_virt(sg->dma_address),
|
||||||
sg->dma_length, dir);
|
sg->dma_length, dir);
|
||||||
else if (dir == DMA_FROM_DEVICE)
|
else if (dir == DMA_FROM_DEVICE)
|
||||||
dma_mark_clean(swiotlb_bus_to_virt(sg->dma_address), sg->dma_length);
|
dma_mark_clean(sg_virt(sg), sg->dma_length);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
EXPORT_SYMBOL(swiotlb_unmap_sg_attrs);
|
EXPORT_SYMBOL(swiotlb_unmap_sg_attrs);
|
||||||
|
@ -900,6 +873,7 @@ swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sgl, int nelems,
|
||||||
{
|
{
|
||||||
return swiotlb_unmap_sg_attrs(hwdev, sgl, nelems, dir, NULL);
|
return swiotlb_unmap_sg_attrs(hwdev, sgl, nelems, dir, NULL);
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL(swiotlb_unmap_sg);
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Make physical memory consistent for a set of streaming mode DMA translations
|
* Make physical memory consistent for a set of streaming mode DMA translations
|
||||||
|
@ -918,11 +892,11 @@ swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sgl,
|
||||||
BUG_ON(dir == DMA_NONE);
|
BUG_ON(dir == DMA_NONE);
|
||||||
|
|
||||||
for_each_sg(sgl, sg, nelems, i) {
|
for_each_sg(sgl, sg, nelems, i) {
|
||||||
if (sg->dma_address != swiotlb_sg_to_bus(sg))
|
if (sg->dma_address != swiotlb_virt_to_bus(hwdev, sg_virt(sg)))
|
||||||
sync_single(hwdev, swiotlb_bus_to_virt(sg->dma_address),
|
sync_single(hwdev, swiotlb_bus_to_virt(sg->dma_address),
|
||||||
sg->dma_length, dir, target);
|
sg->dma_length, dir, target);
|
||||||
else if (dir == DMA_FROM_DEVICE)
|
else if (dir == DMA_FROM_DEVICE)
|
||||||
dma_mark_clean(swiotlb_bus_to_virt(sg->dma_address), sg->dma_length);
|
dma_mark_clean(sg_virt(sg), sg->dma_length);
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -932,6 +906,7 @@ swiotlb_sync_sg_for_cpu(struct device *hwdev, struct scatterlist *sg,
|
||||||
{
|
{
|
||||||
swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_CPU);
|
swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_CPU);
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL(swiotlb_sync_sg_for_cpu);
|
||||||
|
|
||||||
void
|
void
|
||||||
swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
|
swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
|
||||||
|
@ -939,12 +914,14 @@ swiotlb_sync_sg_for_device(struct device *hwdev, struct scatterlist *sg,
|
||||||
{
|
{
|
||||||
swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_DEVICE);
|
swiotlb_sync_sg(hwdev, sg, nelems, dir, SYNC_FOR_DEVICE);
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL(swiotlb_sync_sg_for_device);
|
||||||
|
|
||||||
int
|
int
|
||||||
swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr)
|
swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr)
|
||||||
{
|
{
|
||||||
return (dma_addr == swiotlb_virt_to_bus(io_tlb_overflow_buffer));
|
return (dma_addr == swiotlb_virt_to_bus(hwdev, io_tlb_overflow_buffer));
|
||||||
}
|
}
|
||||||
|
EXPORT_SYMBOL(swiotlb_dma_mapping_error);
|
||||||
|
|
||||||
/*
|
/*
|
||||||
* Return whether the given device DMA address mask can be supported
|
* Return whether the given device DMA address mask can be supported
|
||||||
|
@ -955,20 +932,6 @@ swiotlb_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr)
|
||||||
int
|
int
|
||||||
swiotlb_dma_supported(struct device *hwdev, u64 mask)
|
swiotlb_dma_supported(struct device *hwdev, u64 mask)
|
||||||
{
|
{
|
||||||
return swiotlb_virt_to_bus(io_tlb_end - 1) <= mask;
|
return swiotlb_virt_to_bus(hwdev, io_tlb_end - 1) <= mask;
|
||||||
}
|
}
|
||||||
|
|
||||||
EXPORT_SYMBOL(swiotlb_map_single);
|
|
||||||
EXPORT_SYMBOL(swiotlb_unmap_single);
|
|
||||||
EXPORT_SYMBOL(swiotlb_map_sg);
|
|
||||||
EXPORT_SYMBOL(swiotlb_unmap_sg);
|
|
||||||
EXPORT_SYMBOL(swiotlb_sync_single_for_cpu);
|
|
||||||
EXPORT_SYMBOL(swiotlb_sync_single_for_device);
|
|
||||||
EXPORT_SYMBOL_GPL(swiotlb_sync_single_range_for_cpu);
|
|
||||||
EXPORT_SYMBOL_GPL(swiotlb_sync_single_range_for_device);
|
|
||||||
EXPORT_SYMBOL(swiotlb_sync_sg_for_cpu);
|
|
||||||
EXPORT_SYMBOL(swiotlb_sync_sg_for_device);
|
|
||||||
EXPORT_SYMBOL(swiotlb_dma_mapping_error);
|
|
||||||
EXPORT_SYMBOL(swiotlb_alloc_coherent);
|
|
||||||
EXPORT_SYMBOL(swiotlb_free_coherent);
|
|
||||||
EXPORT_SYMBOL(swiotlb_dma_supported);
|
EXPORT_SYMBOL(swiotlb_dma_supported);
|
||||||
|
|
Loading…
Reference in a new issue