mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-01 16:14:13 +08:00
arm64: Combine coherent and non-coherent swiotlb dma_ops
Since dev_archdata now has a dma_coherent state, combine the two coherent and non-coherent operations and remove their declaration, together with set_dma_ops, from the arch dma-mapping.h file. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Catalin Marinas
parent
9f71ac961b
commit
9d3bfbb4df
@ -28,8 +28,6 @@
|
||||
|
||||
#define DMA_ERROR_CODE (~(dma_addr_t)0)
|
||||
extern struct dma_map_ops *dma_ops;
|
||||
extern struct dma_map_ops coherent_swiotlb_dma_ops;
|
||||
extern struct dma_map_ops noncoherent_swiotlb_dma_ops;
|
||||
|
||||
static inline struct dma_map_ops *__generic_dma_ops(struct device *dev)
|
||||
{
|
||||
@ -47,23 +45,18 @@ static inline struct dma_map_ops *get_dma_ops(struct device *dev)
|
||||
return __generic_dma_ops(dev);
|
||||
}
|
||||
|
||||
static inline void set_dma_ops(struct device *dev, struct dma_map_ops *ops)
|
||||
{
|
||||
dev->archdata.dma_ops = ops;
|
||||
}
|
||||
|
||||
static inline void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
|
||||
struct iommu_ops *iommu, bool coherent)
|
||||
{
|
||||
dev->archdata.dma_coherent = coherent;
|
||||
if (coherent)
|
||||
set_dma_ops(dev, &coherent_swiotlb_dma_ops);
|
||||
}
|
||||
#define arch_setup_dma_ops arch_setup_dma_ops
|
||||
|
||||
/* do not use this function in a driver */
|
||||
static inline bool is_device_dma_coherent(struct device *dev)
|
||||
{
|
||||
if (!dev)
|
||||
return false;
|
||||
return dev->archdata.dma_coherent;
|
||||
}
|
||||
|
||||
|
||||
@ -134,16 +134,17 @@ static void __dma_free_coherent(struct device *dev, size_t size,
|
||||
swiotlb_free_coherent(dev, size, vaddr, dma_handle);
|
||||
}
|
||||
|
||||
static void *__dma_alloc_noncoherent(struct device *dev, size_t size,
|
||||
dma_addr_t *dma_handle, gfp_t flags,
|
||||
struct dma_attrs *attrs)
|
||||
static void *__dma_alloc(struct device *dev, size_t size,
|
||||
dma_addr_t *dma_handle, gfp_t flags,
|
||||
struct dma_attrs *attrs)
|
||||
{
|
||||
struct page *page;
|
||||
void *ptr, *coherent_ptr;
|
||||
bool coherent = is_device_dma_coherent(dev);
|
||||
|
||||
size = PAGE_ALIGN(size);
|
||||
|
||||
if (!(flags & __GFP_WAIT)) {
|
||||
if (!coherent && !(flags & __GFP_WAIT)) {
|
||||
struct page *page = NULL;
|
||||
void *addr = __alloc_from_pool(size, &page);
|
||||
|
||||
@ -151,13 +152,16 @@ static void *__dma_alloc_noncoherent(struct device *dev, size_t size,
|
||||
*dma_handle = phys_to_dma(dev, page_to_phys(page));
|
||||
|
||||
return addr;
|
||||
|
||||
}
|
||||
|
||||
ptr = __dma_alloc_coherent(dev, size, dma_handle, flags, attrs);
|
||||
if (!ptr)
|
||||
goto no_mem;
|
||||
|
||||
/* no need for non-cacheable mapping if coherent */
|
||||
if (coherent)
|
||||
return ptr;
|
||||
|
||||
/* remove any dirty cache lines on the kernel alias */
|
||||
__dma_flush_range(ptr, ptr + size);
|
||||
|
||||
@ -179,15 +183,17 @@ no_mem:
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static void __dma_free_noncoherent(struct device *dev, size_t size,
|
||||
void *vaddr, dma_addr_t dma_handle,
|
||||
struct dma_attrs *attrs)
|
||||
static void __dma_free(struct device *dev, size_t size,
|
||||
void *vaddr, dma_addr_t dma_handle,
|
||||
struct dma_attrs *attrs)
|
||||
{
|
||||
void *swiotlb_addr = phys_to_virt(dma_to_phys(dev, dma_handle));
|
||||
|
||||
if (__free_from_pool(vaddr, size))
|
||||
return;
|
||||
vunmap(vaddr);
|
||||
if (!is_device_dma_coherent(dev)) {
|
||||
if (__free_from_pool(vaddr, size))
|
||||
return;
|
||||
vunmap(vaddr);
|
||||
}
|
||||
__dma_free_coherent(dev, size, swiotlb_addr, dma_handle, attrs);
|
||||
}
|
||||
|
||||
@ -199,7 +205,8 @@ static dma_addr_t __swiotlb_map_page(struct device *dev, struct page *page,
|
||||
dma_addr_t dev_addr;
|
||||
|
||||
dev_addr = swiotlb_map_page(dev, page, offset, size, dir, attrs);
|
||||
__dma_map_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
|
||||
if (!is_device_dma_coherent(dev))
|
||||
__dma_map_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
|
||||
|
||||
return dev_addr;
|
||||
}
|
||||
@ -209,7 +216,8 @@ static void __swiotlb_unmap_page(struct device *dev, dma_addr_t dev_addr,
|
||||
size_t size, enum dma_data_direction dir,
|
||||
struct dma_attrs *attrs)
|
||||
{
|
||||
__dma_unmap_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
|
||||
if (!is_device_dma_coherent(dev))
|
||||
__dma_unmap_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
|
||||
swiotlb_unmap_page(dev, dev_addr, size, dir, attrs);
|
||||
}
|
||||
|
||||
@ -221,9 +229,10 @@ static int __swiotlb_map_sg_attrs(struct device *dev, struct scatterlist *sgl,
|
||||
int i, ret;
|
||||
|
||||
ret = swiotlb_map_sg_attrs(dev, sgl, nelems, dir, attrs);
|
||||
for_each_sg(sgl, sg, ret, i)
|
||||
__dma_map_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
|
||||
sg->length, dir);
|
||||
if (!is_device_dma_coherent(dev))
|
||||
for_each_sg(sgl, sg, ret, i)
|
||||
__dma_map_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
|
||||
sg->length, dir);
|
||||
|
||||
return ret;
|
||||
}
|
||||
@ -236,9 +245,10 @@ static void __swiotlb_unmap_sg_attrs(struct device *dev,
|
||||
struct scatterlist *sg;
|
||||
int i;
|
||||
|
||||
for_each_sg(sgl, sg, nelems, i)
|
||||
__dma_unmap_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
|
||||
sg->length, dir);
|
||||
if (!is_device_dma_coherent(dev))
|
||||
for_each_sg(sgl, sg, nelems, i)
|
||||
__dma_unmap_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
|
||||
sg->length, dir);
|
||||
swiotlb_unmap_sg_attrs(dev, sgl, nelems, dir, attrs);
|
||||
}
|
||||
|
||||
@ -246,7 +256,8 @@ static void __swiotlb_sync_single_for_cpu(struct device *dev,
|
||||
dma_addr_t dev_addr, size_t size,
|
||||
enum dma_data_direction dir)
|
||||
{
|
||||
__dma_unmap_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
|
||||
if (!is_device_dma_coherent(dev))
|
||||
__dma_unmap_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
|
||||
swiotlb_sync_single_for_cpu(dev, dev_addr, size, dir);
|
||||
}
|
||||
|
||||
@ -255,7 +266,8 @@ static void __swiotlb_sync_single_for_device(struct device *dev,
|
||||
enum dma_data_direction dir)
|
||||
{
|
||||
swiotlb_sync_single_for_device(dev, dev_addr, size, dir);
|
||||
__dma_map_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
|
||||
if (!is_device_dma_coherent(dev))
|
||||
__dma_map_area(phys_to_virt(dma_to_phys(dev, dev_addr)), size, dir);
|
||||
}
|
||||
|
||||
static void __swiotlb_sync_sg_for_cpu(struct device *dev,
|
||||
@ -265,9 +277,10 @@ static void __swiotlb_sync_sg_for_cpu(struct device *dev,
|
||||
struct scatterlist *sg;
|
||||
int i;
|
||||
|
||||
for_each_sg(sgl, sg, nelems, i)
|
||||
__dma_unmap_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
|
||||
sg->length, dir);
|
||||
if (!is_device_dma_coherent(dev))
|
||||
for_each_sg(sgl, sg, nelems, i)
|
||||
__dma_unmap_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
|
||||
sg->length, dir);
|
||||
swiotlb_sync_sg_for_cpu(dev, sgl, nelems, dir);
|
||||
}
|
||||
|
||||
@ -279,9 +292,10 @@ static void __swiotlb_sync_sg_for_device(struct device *dev,
|
||||
int i;
|
||||
|
||||
swiotlb_sync_sg_for_device(dev, sgl, nelems, dir);
|
||||
for_each_sg(sgl, sg, nelems, i)
|
||||
__dma_map_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
|
||||
sg->length, dir);
|
||||
if (!is_device_dma_coherent(dev))
|
||||
for_each_sg(sgl, sg, nelems, i)
|
||||
__dma_map_area(phys_to_virt(dma_to_phys(dev, sg->dma_address)),
|
||||
sg->length, dir);
|
||||
}
|
||||
|
||||
/* vma->vm_page_prot must be set appropriately before calling this function */
|
||||
@ -308,28 +322,20 @@ static int __dma_common_mmap(struct device *dev, struct vm_area_struct *vma,
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int __swiotlb_mmap_noncoherent(struct device *dev,
|
||||
struct vm_area_struct *vma,
|
||||
void *cpu_addr, dma_addr_t dma_addr, size_t size,
|
||||
struct dma_attrs *attrs)
|
||||
static int __swiotlb_mmap(struct device *dev,
|
||||
struct vm_area_struct *vma,
|
||||
void *cpu_addr, dma_addr_t dma_addr, size_t size,
|
||||
struct dma_attrs *attrs)
|
||||
{
|
||||
vma->vm_page_prot = __get_dma_pgprot(attrs, vma->vm_page_prot, false);
|
||||
vma->vm_page_prot = __get_dma_pgprot(attrs, vma->vm_page_prot,
|
||||
is_device_dma_coherent(dev));
|
||||
return __dma_common_mmap(dev, vma, cpu_addr, dma_addr, size);
|
||||
}
|
||||
|
||||
static int __swiotlb_mmap_coherent(struct device *dev,
|
||||
struct vm_area_struct *vma,
|
||||
void *cpu_addr, dma_addr_t dma_addr, size_t size,
|
||||
struct dma_attrs *attrs)
|
||||
{
|
||||
/* Just use whatever page_prot attributes were specified */
|
||||
return __dma_common_mmap(dev, vma, cpu_addr, dma_addr, size);
|
||||
}
|
||||
|
||||
struct dma_map_ops noncoherent_swiotlb_dma_ops = {
|
||||
.alloc = __dma_alloc_noncoherent,
|
||||
.free = __dma_free_noncoherent,
|
||||
.mmap = __swiotlb_mmap_noncoherent,
|
||||
static struct dma_map_ops swiotlb_dma_ops = {
|
||||
.alloc = __dma_alloc,
|
||||
.free = __dma_free,
|
||||
.mmap = __swiotlb_mmap,
|
||||
.map_page = __swiotlb_map_page,
|
||||
.unmap_page = __swiotlb_unmap_page,
|
||||
.map_sg = __swiotlb_map_sg_attrs,
|
||||
@ -341,24 +347,6 @@ struct dma_map_ops noncoherent_swiotlb_dma_ops = {
|
||||
.dma_supported = swiotlb_dma_supported,
|
||||
.mapping_error = swiotlb_dma_mapping_error,
|
||||
};
|
||||
EXPORT_SYMBOL(noncoherent_swiotlb_dma_ops);
|
||||
|
||||
struct dma_map_ops coherent_swiotlb_dma_ops = {
|
||||
.alloc = __dma_alloc_coherent,
|
||||
.free = __dma_free_coherent,
|
||||
.mmap = __swiotlb_mmap_coherent,
|
||||
.map_page = swiotlb_map_page,
|
||||
.unmap_page = swiotlb_unmap_page,
|
||||
.map_sg = swiotlb_map_sg_attrs,
|
||||
.unmap_sg = swiotlb_unmap_sg_attrs,
|
||||
.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
|
||||
.sync_single_for_device = swiotlb_sync_single_for_device,
|
||||
.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
|
||||
.sync_sg_for_device = swiotlb_sync_sg_for_device,
|
||||
.dma_supported = swiotlb_dma_supported,
|
||||
.mapping_error = swiotlb_dma_mapping_error,
|
||||
};
|
||||
EXPORT_SYMBOL(coherent_swiotlb_dma_ops);
|
||||
|
||||
extern int swiotlb_late_init_with_default_size(size_t default_size);
|
||||
|
||||
@ -427,7 +415,7 @@ static int __init swiotlb_late_init(void)
|
||||
{
|
||||
size_t swiotlb_size = min(SZ_64M, MAX_ORDER_NR_PAGES << PAGE_SHIFT);
|
||||
|
||||
dma_ops = &noncoherent_swiotlb_dma_ops;
|
||||
dma_ops = &swiotlb_dma_ops;
|
||||
|
||||
return swiotlb_late_init_with_default_size(swiotlb_size);
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user