From: Vladimir Murzin vladimir.murzin@arm.com
[ Upstream commit a445e940ea686fc60475564009821010eb213be3 ]
Daniele reported that issue previously fixed in c41f9ea998f3 ("drivers: dma-coherent: Account dma_pfn_offset when used with device tree") reappear shortly after 43fc509c3efb ("dma-coherent: introduce interface for default DMA pool") where fix was accidentally dropped.
Lets put fix back in place and respect dma-ranges for reserved memory.
Fixes: 43fc509c3efb ("dma-coherent: introduce interface for default DMA pool")
Reported-by: Daniele Alessandrelli daniele.alessandrelli@gmail.com Tested-by: Daniele Alessandrelli daniele.alessandrelli@gmail.com Tested-by: Alexandre Torgue alexandre.torgue@st.com Signed-off-by: Vladimir Murzin vladimir.murzin@arm.com Signed-off-by: Christoph Hellwig hch@lst.de Signed-off-by: Sasha Levin sashal@kernel.org --- arch/arm/mm/dma-mapping-nommu.c | 2 +- include/linux/dma-mapping.h | 4 ++-- kernel/dma/coherent.c | 16 +++++++++------- 3 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/arch/arm/mm/dma-mapping-nommu.c b/arch/arm/mm/dma-mapping-nommu.c index db92478983005..287ef898a55e1 100644 --- a/arch/arm/mm/dma-mapping-nommu.c +++ b/arch/arm/mm/dma-mapping-nommu.c @@ -35,7 +35,7 @@ static void *arm_nommu_dma_alloc(struct device *dev, size_t size, unsigned long attrs)
{ - void *ret = dma_alloc_from_global_coherent(size, dma_handle); + void *ret = dma_alloc_from_global_coherent(dev, size, dma_handle);
/* * dma_alloc_from_global_coherent() may fail because: diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h index 0aad641d662c3..4d450672b7d66 100644 --- a/include/linux/dma-mapping.h +++ b/include/linux/dma-mapping.h @@ -162,7 +162,7 @@ int dma_release_from_dev_coherent(struct device *dev, int order, void *vaddr); int dma_mmap_from_dev_coherent(struct device *dev, struct vm_area_struct *vma, void *cpu_addr, size_t size, int *ret);
-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); int dma_release_from_global_coherent(int order, void *vaddr); int dma_mmap_from_global_coherent(struct vm_area_struct *vma, void *cpu_addr, size_t size, int *ret); @@ -172,7 +172,7 @@ int dma_mmap_from_global_coherent(struct vm_area_struct *vma, void *cpu_addr, #define dma_release_from_dev_coherent(dev, order, vaddr) (0) #define dma_mmap_from_dev_coherent(dev, vma, vaddr, order, ret) (0)
-static inline void *dma_alloc_from_global_coherent(ssize_t size, +static inline void *dma_alloc_from_global_coherent(struct device *dev, ssize_t size, dma_addr_t *dma_handle) { return NULL; diff --git a/kernel/dma/coherent.c b/kernel/dma/coherent.c index 545e3869b0e32..551b0eb7028a3 100644 --- a/kernel/dma/coherent.c +++ b/kernel/dma/coherent.c @@ -123,8 +123,9 @@ int dma_declare_coherent_memory(struct device *dev, phys_addr_t phys_addr, return ret; }
-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; @@ -143,7 +144,7 @@ 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); + *dma_handle = dma_get_device_base(dev, mem) + (pageno << PAGE_SHIFT); ret = mem->virt_base + (pageno << PAGE_SHIFT); spin_unlock_irqrestore(&mem->spinlock, flags); memset(ret, 0, size); @@ -175,17 +176,18 @@ 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,