diff options
Diffstat (limited to 'kernel/dma')
| -rw-r--r-- | kernel/dma/coherent.c | 27 | ||||
| -rw-r--r-- | kernel/dma/debug.c | 10 | ||||
| -rw-r--r-- | kernel/dma/direct.c | 5 |
3 files changed, 25 insertions, 17 deletions
diff --git a/kernel/dma/coherent.c b/kernel/dma/coherent.c index 29fd6590dc1e..3fe6e0119ee6 100644 --- a/kernel/dma/coherent.c +++ b/kernel/dma/coherent.c @@ -135,8 +135,9 @@ void dma_release_declared_memory(struct device *dev) } EXPORT_SYMBOL(dma_release_declared_memory); -static void *__dma_alloc_from_coherent(struct dma_coherent_mem *mem, - ssize_t size, dma_addr_t *dma_handle) +static void *__dma_alloc_from_coherent(struct device *dev, + struct dma_coherent_mem *mem, + ssize_t size, dma_addr_t *dma_handle) { int order = get_order(size); unsigned long flags; @@ -145,7 +146,7 @@ static void *__dma_alloc_from_coherent(struct dma_coherent_mem *mem, spin_lock_irqsave(&mem->spinlock, flags); - if (unlikely(size > (mem->size << PAGE_SHIFT))) + if (unlikely(size > ((dma_addr_t)mem->size << PAGE_SHIFT))) goto err; pageno = bitmap_find_free_region(mem->bitmap, mem->size, order); @@ -155,8 +156,9 @@ static void *__dma_alloc_from_coherent(struct dma_coherent_mem *mem, /* * Memory was found in the coherent area. */ - *dma_handle = mem->device_base + (pageno << PAGE_SHIFT); - ret = mem->virt_base + (pageno << PAGE_SHIFT); + *dma_handle = dma_get_device_base(dev, mem) + + ((dma_addr_t)pageno << PAGE_SHIFT); + ret = mem->virt_base + ((dma_addr_t)pageno << PAGE_SHIFT); spin_unlock_irqrestore(&mem->spinlock, flags); memset(ret, 0, size); return ret; @@ -187,24 +189,25 @@ int dma_alloc_from_dev_coherent(struct device *dev, ssize_t size, if (!mem) return 0; - *ret = __dma_alloc_from_coherent(mem, size, dma_handle); + *ret = __dma_alloc_from_coherent(dev, mem, size, dma_handle); return 1; } -void *dma_alloc_from_global_coherent(ssize_t size, dma_addr_t *dma_handle) +void *dma_alloc_from_global_coherent(struct device *dev, ssize_t size, + dma_addr_t *dma_handle) { if (!dma_coherent_default_memory) return NULL; - return __dma_alloc_from_coherent(dma_coherent_default_memory, size, - dma_handle); + return __dma_alloc_from_coherent(dev, dma_coherent_default_memory, size, + dma_handle); } static int __dma_release_from_coherent(struct dma_coherent_mem *mem, int order, void *vaddr) { if (mem && vaddr >= mem->virt_base && vaddr < - (mem->virt_base + (mem->size << PAGE_SHIFT))) { + (mem->virt_base + ((dma_addr_t)mem->size << PAGE_SHIFT))) { int page = (vaddr - mem->virt_base) >> PAGE_SHIFT; unsigned long flags; @@ -248,10 +251,10 @@ static int __dma_mmap_from_coherent(struct dma_coherent_mem *mem, struct vm_area_struct *vma, void *vaddr, size_t size, int *ret) { if (mem && vaddr >= mem->virt_base && vaddr + size <= - (mem->virt_base + (mem->size << PAGE_SHIFT))) { + (mem->virt_base + ((dma_addr_t)mem->size << PAGE_SHIFT))) { unsigned long off = vma->vm_pgoff; int start = (vaddr - mem->virt_base) >> PAGE_SHIFT; - int user_count = vma_pages(vma); + unsigned long user_count = vma_pages(vma); int count = PAGE_ALIGN(size) >> PAGE_SHIFT; *ret = -ENXIO; diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c index 099002d84f46..cb6425e52bf7 100644 --- a/kernel/dma/debug.c +++ b/kernel/dma/debug.c @@ -137,9 +137,12 @@ static const char *const maperr2str[] = { [MAP_ERR_CHECKED] = "dma map error checked", }; -static const char *type2name[5] = { "single", "page", - "scather-gather", "coherent", - "resource" }; +static const char *type2name[] = { + [dma_debug_single] = "single", + [dma_debug_sg] = "scather-gather", + [dma_debug_coherent] = "coherent", + [dma_debug_resource] = "resource", +}; static const char *dir2name[4] = { "DMA_BIDIRECTIONAL", "DMA_TO_DEVICE", "DMA_FROM_DEVICE", "DMA_NONE" }; @@ -420,6 +423,7 @@ void debug_dma_dump_mappings(struct device *dev) } spin_unlock_irqrestore(&bucket->lock, flags); + cond_resched(); } } diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index 9912be7a970d..bebc5ee62cbb 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -53,7 +53,8 @@ static inline dma_addr_t phys_to_dma_direct(struct device *dev, u64 dma_direct_get_required_mask(struct device *dev) { - u64 max_dma = phys_to_dma_direct(dev, (max_pfn - 1) << PAGE_SHIFT); + phys_addr_t phys = (phys_addr_t)(max_pfn - 1) << PAGE_SHIFT; + u64 max_dma = phys_to_dma_direct(dev, phys); return (1ULL << (fls64(max_dma) - 1)) * 2 - 1; } @@ -357,7 +358,7 @@ dma_addr_t dma_direct_map_resource(struct device *dev, phys_addr_t paddr, { dma_addr_t dma_addr = paddr; - if (unlikely(!dma_direct_possible(dev, dma_addr, size))) { + if (unlikely(!dma_capable(dev, dma_addr, size))) { report_addr(dev, dma_addr, size); return DMA_MAPPING_ERROR; } |