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-rw-r--r--arch/microblaze/include/asm/Kbuild1
-rw-r--r--arch/microblaze/include/asm/dma-mapping.h4
-rw-r--r--arch/microblaze/include/asm/thread_info.h3
-rw-r--r--arch/microblaze/kernel/dma.c78
4 files changed, 24 insertions, 62 deletions
diff --git a/arch/microblaze/include/asm/Kbuild b/arch/microblaze/include/asm/Kbuild
index 9d66f7793841..3c80a5a308ed 100644
--- a/arch/microblaze/include/asm/Kbuild
+++ b/arch/microblaze/include/asm/Kbuild
@@ -2,7 +2,6 @@ generic-y += barrier.h
generic-y += bitops.h
generic-y += bug.h
generic-y += bugs.h
-generic-y += clkdev.h
generic-y += device.h
generic-y += div64.h
generic-y += emergency-restart.h
diff --git a/arch/microblaze/include/asm/dma-mapping.h b/arch/microblaze/include/asm/dma-mapping.h
index 6b9ea39405b8..add50c1373bf 100644
--- a/arch/microblaze/include/asm/dma-mapping.h
+++ b/arch/microblaze/include/asm/dma-mapping.h
@@ -18,11 +18,11 @@
/*
* Available generic sets of operations
*/
-extern const struct dma_map_ops dma_direct_ops;
+extern const struct dma_map_ops dma_nommu_ops;
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
- return &dma_direct_ops;
+ return &dma_nommu_ops;
}
#endif /* _ASM_MICROBLAZE_DMA_MAPPING_H */
diff --git a/arch/microblaze/include/asm/thread_info.h b/arch/microblaze/include/asm/thread_info.h
index e7e8954e9815..9afe4b5bd6c8 100644
--- a/arch/microblaze/include/asm/thread_info.h
+++ b/arch/microblaze/include/asm/thread_info.h
@@ -86,9 +86,6 @@ struct thread_info {
.addr_limit = KERNEL_DS, \
}
-#define init_thread_info (init_thread_union.thread_info)
-#define init_stack (init_thread_union.stack)
-
/* how to get the thread information struct from C */
static inline struct thread_info *current_thread_info(void)
{
diff --git a/arch/microblaze/kernel/dma.c b/arch/microblaze/kernel/dma.c
index 990bf9ea0ec6..c91e8cef98dd 100644
--- a/arch/microblaze/kernel/dma.c
+++ b/arch/microblaze/kernel/dma.c
@@ -15,42 +15,18 @@
#include <linux/bug.h>
#include <asm/cacheflush.h>
-#define NOT_COHERENT_CACHE
-
-static void *dma_direct_alloc_coherent(struct device *dev, size_t size,
+static void *dma_nommu_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t flag,
unsigned long attrs)
{
-#ifdef NOT_COHERENT_CACHE
return consistent_alloc(flag, size, dma_handle);
-#else
- void *ret;
- struct page *page;
- int node = dev_to_node(dev);
-
- /* ignore region specifiers */
- flag &= ~(__GFP_HIGHMEM);
-
- page = alloc_pages_node(node, flag, get_order(size));
- if (page == NULL)
- return NULL;
- ret = page_address(page);
- memset(ret, 0, size);
- *dma_handle = virt_to_phys(ret);
-
- return ret;
-#endif
}
-static void dma_direct_free_coherent(struct device *dev, size_t size,
+static void dma_nommu_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle,
unsigned long attrs)
{
-#ifdef NOT_COHERENT_CACHE
consistent_free(size, vaddr);
-#else
- free_pages((unsigned long)vaddr, get_order(size));
-#endif
}
static inline void __dma_sync(unsigned long paddr,
@@ -69,7 +45,7 @@ static inline void __dma_sync(unsigned long paddr,
}
}
-static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl,
+static int dma_nommu_map_sg(struct device *dev, struct scatterlist *sgl,
int nents, enum dma_data_direction direction,
unsigned long attrs)
{
@@ -89,12 +65,7 @@ static int dma_direct_map_sg(struct device *dev, struct scatterlist *sgl,
return nents;
}
-static int dma_direct_dma_supported(struct device *dev, u64 mask)
-{
- return 1;
-}
-
-static inline dma_addr_t dma_direct_map_page(struct device *dev,
+static inline dma_addr_t dma_nommu_map_page(struct device *dev,
struct page *page,
unsigned long offset,
size_t size,
@@ -106,7 +77,7 @@ static inline dma_addr_t dma_direct_map_page(struct device *dev,
return page_to_phys(page) + offset;
}
-static inline void dma_direct_unmap_page(struct device *dev,
+static inline void dma_nommu_unmap_page(struct device *dev,
dma_addr_t dma_address,
size_t size,
enum dma_data_direction direction,
@@ -122,7 +93,7 @@ static inline void dma_direct_unmap_page(struct device *dev,
}
static inline void
-dma_direct_sync_single_for_cpu(struct device *dev,
+dma_nommu_sync_single_for_cpu(struct device *dev,
dma_addr_t dma_handle, size_t size,
enum dma_data_direction direction)
{
@@ -136,7 +107,7 @@ dma_direct_sync_single_for_cpu(struct device *dev,
}
static inline void
-dma_direct_sync_single_for_device(struct device *dev,
+dma_nommu_sync_single_for_device(struct device *dev,
dma_addr_t dma_handle, size_t size,
enum dma_data_direction direction)
{
@@ -150,7 +121,7 @@ dma_direct_sync_single_for_device(struct device *dev,
}
static inline void
-dma_direct_sync_sg_for_cpu(struct device *dev,
+dma_nommu_sync_sg_for_cpu(struct device *dev,
struct scatterlist *sgl, int nents,
enum dma_data_direction direction)
{
@@ -164,7 +135,7 @@ dma_direct_sync_sg_for_cpu(struct device *dev,
}
static inline void
-dma_direct_sync_sg_for_device(struct device *dev,
+dma_nommu_sync_sg_for_device(struct device *dev,
struct scatterlist *sgl, int nents,
enum dma_data_direction direction)
{
@@ -178,7 +149,7 @@ dma_direct_sync_sg_for_device(struct device *dev,
}
static
-int dma_direct_mmap_coherent(struct device *dev, struct vm_area_struct *vma,
+int dma_nommu_mmap_coherent(struct device *dev, struct vm_area_struct *vma,
void *cpu_addr, dma_addr_t handle, size_t size,
unsigned long attrs)
{
@@ -191,12 +162,8 @@ int dma_direct_mmap_coherent(struct device *dev, struct vm_area_struct *vma,
if (off >= count || user_count > (count - off))
return -ENXIO;
-#ifdef NOT_COHERENT_CACHE
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
pfn = consistent_virt_to_pfn(cpu_addr);
-#else
- pfn = virt_to_pfn(cpu_addr);
-#endif
return remap_pfn_range(vma, vma->vm_start, pfn + off,
vma->vm_end - vma->vm_start, vma->vm_page_prot);
#else
@@ -204,20 +171,19 @@ int dma_direct_mmap_coherent(struct device *dev, struct vm_area_struct *vma,
#endif
}
-const struct dma_map_ops dma_direct_ops = {
- .alloc = dma_direct_alloc_coherent,
- .free = dma_direct_free_coherent,
- .mmap = dma_direct_mmap_coherent,
- .map_sg = dma_direct_map_sg,
- .dma_supported = dma_direct_dma_supported,
- .map_page = dma_direct_map_page,
- .unmap_page = dma_direct_unmap_page,
- .sync_single_for_cpu = dma_direct_sync_single_for_cpu,
- .sync_single_for_device = dma_direct_sync_single_for_device,
- .sync_sg_for_cpu = dma_direct_sync_sg_for_cpu,
- .sync_sg_for_device = dma_direct_sync_sg_for_device,
+const struct dma_map_ops dma_nommu_ops = {
+ .alloc = dma_nommu_alloc_coherent,
+ .free = dma_nommu_free_coherent,
+ .mmap = dma_nommu_mmap_coherent,
+ .map_sg = dma_nommu_map_sg,
+ .map_page = dma_nommu_map_page,
+ .unmap_page = dma_nommu_unmap_page,
+ .sync_single_for_cpu = dma_nommu_sync_single_for_cpu,
+ .sync_single_for_device = dma_nommu_sync_single_for_device,
+ .sync_sg_for_cpu = dma_nommu_sync_sg_for_cpu,
+ .sync_sg_for_device = dma_nommu_sync_sg_for_device,
};
-EXPORT_SYMBOL(dma_direct_ops);
+EXPORT_SYMBOL(dma_nommu_ops);
/* Number of entries preallocated for DMA-API debugging */
#define PREALLOC_DMA_DEBUG_ENTRIES (1 << 16)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 00:45:28 +0100