aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/c6x/Kconfig2
-rw-r--r--arch/c6x/include/asm/dma-mapping.h98
-rw-r--r--arch/c6x/kernel/dma.c95
-rw-r--r--arch/c6x/mm/dma-coherent.c10
4 files changed, 58 insertions, 147 deletions
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
index 77ea09b8bce1..8602f725e270 100644
--- a/arch/c6x/Kconfig
+++ b/arch/c6x/Kconfig
@@ -17,6 +17,8 @@ config C6X
select OF_EARLY_FLATTREE
select GENERIC_CLOCKEVENTS
select MODULES_USE_ELF_RELA
+ select ARCH_NO_COHERENT_DMA_MMAP
+ select HAVE_DMA_ATTRS
config MMU
def_bool n
diff --git a/arch/c6x/include/asm/dma-mapping.h b/arch/c6x/include/asm/dma-mapping.h
index bbd7774e4d4e..f881e425d442 100644
--- a/arch/c6x/include/asm/dma-mapping.h
+++ b/arch/c6x/include/asm/dma-mapping.h
@@ -12,104 +12,24 @@
#ifndef _ASM_C6X_DMA_MAPPING_H
#define _ASM_C6X_DMA_MAPPING_H
-#include <linux/dma-debug.h>
-#include <asm-generic/dma-coherent.h>
-
-#define dma_supported(d, m) 1
-
-static inline void dma_sync_single_range_for_device(struct device *dev,
- dma_addr_t addr,
- unsigned long offset,
- size_t size,
- enum dma_data_direction dir)
-{
-}
-
-static inline int dma_set_mask(struct device *dev, u64 dma_mask)
-{
- if (!dev->dma_mask || !dma_supported(dev, dma_mask))
- return -EIO;
-
- *dev->dma_mask = dma_mask;
-
- return 0;
-}
-
/*
* DMA errors are defined by all-bits-set in the DMA address.
*/
-static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- debug_dma_mapping_error(dev, dma_addr);
- return dma_addr == ~0;
-}
-
-extern dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
- size_t size, enum dma_data_direction dir);
-
-extern void dma_unmap_single(struct device *dev, dma_addr_t handle,
- size_t size, enum dma_data_direction dir);
-
-extern int dma_map_sg(struct device *dev, struct scatterlist *sglist,
- int nents, enum dma_data_direction direction);
-
-extern void dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
- int nents, enum dma_data_direction direction);
+#define DMA_ERROR_CODE ~0
-static inline dma_addr_t dma_map_page(struct device *dev, struct page *page,
- unsigned long offset, size_t size,
- enum dma_data_direction dir)
-{
- dma_addr_t handle;
-
- handle = dma_map_single(dev, page_address(page) + offset, size, dir);
-
- debug_dma_map_page(dev, page, offset, size, dir, handle, false);
-
- return handle;
-}
+extern struct dma_map_ops c6x_dma_ops;
-static inline void dma_unmap_page(struct device *dev, dma_addr_t handle,
- size_t size, enum dma_data_direction dir)
+static inline struct dma_map_ops *get_dma_ops(struct device *dev)
{
- dma_unmap_single(dev, handle, size, dir);
-
- debug_dma_unmap_page(dev, handle, size, dir, false);
+ return &c6x_dma_ops;
}
-extern void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
- size_t size, enum dma_data_direction dir);
-
-extern void dma_sync_single_for_device(struct device *dev, dma_addr_t handle,
- size_t size,
- enum dma_data_direction dir);
-
-extern void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg,
- int nents, enum dma_data_direction dir);
-
-extern void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
- int nents, enum dma_data_direction dir);
+#include <asm-generic/dma-mapping-common.h>
extern void coherent_mem_init(u32 start, u32 size);
-extern void *dma_alloc_coherent(struct device *, size_t, dma_addr_t *, gfp_t);
-extern void dma_free_coherent(struct device *, size_t, void *, dma_addr_t);
-
-#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent((d), (s), (h), (f))
-#define dma_free_noncoherent(d, s, v, h) dma_free_coherent((d), (s), (v), (h))
-
-/* Not supported for now */
-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;
-}
+void *c6x_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
+ gfp_t gfp, struct dma_attrs *attrs);
+void c6x_dma_free(struct device *dev, size_t size, void *vaddr,
+ dma_addr_t dma_handle, struct dma_attrs *attrs);
#endif /* _ASM_C6X_DMA_MAPPING_H */
diff --git a/arch/c6x/kernel/dma.c b/arch/c6x/kernel/dma.c
index ab7b12de144d..8a80f3a250c0 100644
--- a/arch/c6x/kernel/dma.c
+++ b/arch/c6x/kernel/dma.c
@@ -36,110 +36,101 @@ static void c6x_dma_sync(dma_addr_t handle, size_t size,
}
}
-dma_addr_t dma_map_single(struct device *dev, void *ptr, size_t size,
- enum dma_data_direction dir)
+static dma_addr_t c6x_dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
- dma_addr_t addr = virt_to_phys(ptr);
+ dma_addr_t handle = virt_to_phys(page_address(page) + offset);
- c6x_dma_sync(addr, size, dir);
-
- debug_dma_map_page(dev, virt_to_page(ptr),
- (unsigned long)ptr & ~PAGE_MASK, size,
- dir, addr, true);
- return addr;
+ c6x_dma_sync(handle, size, dir);
+ return handle;
}
-EXPORT_SYMBOL(dma_map_single);
-
-void dma_unmap_single(struct device *dev, dma_addr_t handle,
- size_t size, enum dma_data_direction dir)
+static void c6x_dma_unmap_page(struct device *dev, dma_addr_t handle,
+ size_t size, enum dma_data_direction dir, struct dma_attrs *attrs)
{
c6x_dma_sync(handle, size, dir);
-
- debug_dma_unmap_page(dev, handle, size, dir, true);
}
-EXPORT_SYMBOL(dma_unmap_single);
-
-int dma_map_sg(struct device *dev, struct scatterlist *sglist,
- int nents, enum dma_data_direction dir)
+static int c6x_dma_map_sg(struct device *dev, struct scatterlist *sglist,
+ int nents, enum dma_data_direction dir, struct dma_attrs *attrs)
{
struct scatterlist *sg;
int i;
- for_each_sg(sglist, sg, nents, i)
- sg->dma_address = dma_map_single(dev, sg_virt(sg), sg->length,
- dir);
-
- debug_dma_map_sg(dev, sglist, nents, nents, dir);
+ for_each_sg(sglist, sg, nents, i) {
+ sg->dma_address = sg_phys(sg);
+ c6x_dma_sync(sg->dma_address, sg->length, dir);
+ }
return nents;
}
-EXPORT_SYMBOL(dma_map_sg);
-
-void dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
- int nents, enum dma_data_direction dir)
+static void c6x_dma_unmap_sg(struct device *dev, struct scatterlist *sglist,
+ int nents, enum dma_data_direction dir,
+ struct dma_attrs *attrs)
{
struct scatterlist *sg;
int i;
for_each_sg(sglist, sg, nents, i)
- dma_unmap_single(dev, sg_dma_address(sg), sg->length, dir);
+ c6x_dma_sync(sg_dma_address(sg), sg->length, dir);
- debug_dma_unmap_sg(dev, sglist, nents, dir);
}
-EXPORT_SYMBOL(dma_unmap_sg);
-void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
- size_t size, enum dma_data_direction dir)
+static void c6x_dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle,
+ size_t size, enum dma_data_direction dir)
{
c6x_dma_sync(handle, size, dir);
- debug_dma_sync_single_for_cpu(dev, handle, size, dir);
}
-EXPORT_SYMBOL(dma_sync_single_for_cpu);
-
-void dma_sync_single_for_device(struct device *dev, dma_addr_t handle,
- size_t size, enum dma_data_direction dir)
+static void c6x_dma_sync_single_for_device(struct device *dev,
+ dma_addr_t handle, size_t size, enum dma_data_direction dir)
{
c6x_dma_sync(handle, size, dir);
- debug_dma_sync_single_for_device(dev, handle, size, dir);
}
-EXPORT_SYMBOL(dma_sync_single_for_device);
-
-void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sglist,
- int nents, enum dma_data_direction dir)
+static void c6x_dma_sync_sg_for_cpu(struct device *dev,
+ struct scatterlist *sglist, int nents,
+ enum dma_data_direction dir)
{
struct scatterlist *sg;
int i;
for_each_sg(sglist, sg, nents, i)
- dma_sync_single_for_cpu(dev, sg_dma_address(sg),
+ c6x_dma_sync_single_for_cpu(dev, sg_dma_address(sg),
sg->length, dir);
- debug_dma_sync_sg_for_cpu(dev, sglist, nents, dir);
}
-EXPORT_SYMBOL(dma_sync_sg_for_cpu);
-
-void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sglist,
- int nents, enum dma_data_direction dir)
+static void c6x_dma_sync_sg_for_device(struct device *dev,
+ struct scatterlist *sglist, int nents,
+ enum dma_data_direction dir)
{
struct scatterlist *sg;
int i;
for_each_sg(sglist, sg, nents, i)
- dma_sync_single_for_device(dev, sg_dma_address(sg),
+ c6x_dma_sync_single_for_device(dev, sg_dma_address(sg),
sg->length, dir);
- debug_dma_sync_sg_for_device(dev, sglist, nents, dir);
}
-EXPORT_SYMBOL(dma_sync_sg_for_device);
+struct dma_map_ops c6x_dma_ops = {
+ .alloc = c6x_dma_alloc,
+ .free = c6x_dma_free,
+ .map_page = c6x_dma_map_page,
+ .unmap_page = c6x_dma_unmap_page,
+ .map_sg = c6x_dma_map_sg,
+ .unmap_sg = c6x_dma_unmap_sg,
+ .sync_single_for_device = c6x_dma_sync_single_for_device,
+ .sync_single_for_cpu = c6x_dma_sync_single_for_cpu,
+ .sync_sg_for_device = c6x_dma_sync_sg_for_device,
+ .sync_sg_for_cpu = c6x_dma_sync_sg_for_cpu,
+};
+EXPORT_SYMBOL(c6x_dma_ops);
/* Number of entries preallocated for DMA-API debugging */
#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)
diff --git a/arch/c6x/mm/dma-coherent.c b/arch/c6x/mm/dma-coherent.c
index 4187e5180373..f7ee63af2541 100644
--- a/arch/c6x/mm/dma-coherent.c
+++ b/arch/c6x/mm/dma-coherent.c
@@ -73,8 +73,8 @@ static void __free_dma_pages(u32 addr, int order)
* Allocate DMA coherent memory space and return both the kernel
* virtual and DMA address for that space.
*/
-void *dma_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *handle, gfp_t gfp)
+void *c6x_dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
+ gfp_t gfp, struct dma_attrs *attrs)
{
u32 paddr;
int order;
@@ -94,13 +94,12 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
return phys_to_virt(paddr);
}
-EXPORT_SYMBOL(dma_alloc_coherent);
/*
* Free DMA coherent memory as defined by the above mapping.
*/
-void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
- dma_addr_t dma_handle)
+void c6x_dma_free(struct device *dev, size_t size, void *vaddr,
+ dma_addr_t dma_handle, struct dma_attrs *attrs)
{
int order;
@@ -111,7 +110,6 @@ void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
__free_dma_pages(virt_to_phys(vaddr), order);
}
-EXPORT_SYMBOL(dma_free_coherent);
/*
* Initialise the coherent DMA memory allocator using the given uncached region.
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 17:23:38 +0000