xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Tükrözés 0
Kód Hibajegyek Egyesítési kérések Actions Packages Projektek Kiadások Wiki Tevékenység

nios2: convert to dma_map_ops

Forráskód böngészése 
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Christoph Hellwig
2016-01-20 15:01:41 -08:00
committed by Linus Torvalds
szülő e20dd88995
commit 5a1a67f1d7
3 fájl változott, egészen pontosan 87 új sor hozzáadva és 186 régi sor törölve
Download Patch File Download Diff File Expand all files Collapse all files

149
arch/nios2/mm/dma-mapping.c
Fájl megtekintése

@@ -20,9 +20,46 @@
#include <linux/cache.h>
#include <asm/cacheflush.h>
static inline void __dma_sync_for_device(void *vaddr, size_t size,
enum dma_data_direction direction)
{
switch (direction) {
case DMA_FROM_DEVICE:
invalidate_dcache_range((unsigned long)vaddr,
(unsigned long)(vaddr + size));
break;
case DMA_TO_DEVICE:
/*
* We just need to flush the caches here , but Nios2 flush
* instruction will do both writeback and invalidate.
*/
case DMA_BIDIRECTIONAL: /* flush and invalidate */
flush_dcache_range((unsigned long)vaddr,
(unsigned long)(vaddr + size));
break;
default:
BUG();
}
}
void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp)
static inline void __dma_sync_for_cpu(void *vaddr, size_t size,
enum dma_data_direction direction)
{
switch (direction) {
case DMA_BIDIRECTIONAL:
case DMA_FROM_DEVICE:
invalidate_dcache_range((unsigned long)vaddr,
(unsigned long)(vaddr + size));
break;
case DMA_TO_DEVICE:
break;
default:
BUG();
}
}
static void *nios2_dma_alloc(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp, struct dma_attrs *attrs)
{
void *ret;
@@ -45,24 +82,21 @@ void *dma_alloc_coherent(struct device *dev, size_t size,
return ret;
}
EXPORT_SYMBOL(dma_alloc_coherent);
void dma_free_coherent(struct device *dev, size_t size, void *vaddr,
dma_addr_t dma_handle)
static void nios2_dma_free(struct device *dev, size_t size, void *vaddr,
dma_addr_t dma_handle, struct dma_attrs *attrs)
{
unsigned long addr = (unsigned long) CAC_ADDR((unsigned long) vaddr);
free_pages(addr, get_order(size));
}
EXPORT_SYMBOL(dma_free_coherent);
int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
enum dma_data_direction direction)
static int nios2_dma_map_sg(struct device *dev, struct scatterlist *sg,
int nents, enum dma_data_direction direction,
struct dma_attrs *attrs)
{
int i;
BUG_ON(!valid_dma_direction(direction));
for_each_sg(sg, sg, nents, i) {
void *addr;
@@ -75,40 +109,32 @@ int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
return nents;
}
EXPORT_SYMBOL(dma_map_sg);
dma_addr_t dma_map_page(struct device *dev, struct page *page,
static dma_addr_t nios2_dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction direction)
enum dma_data_direction direction,
struct dma_attrs *attrs)
{
void *addr;
void *addr = page_address(page) + offset;
BUG_ON(!valid_dma_direction(direction));
addr = page_address(page) + offset;
__dma_sync_for_device(addr, size, direction);
return page_to_phys(page) + offset;
}
EXPORT_SYMBOL(dma_map_page);
void dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
enum dma_data_direction direction)
static void nios2_dma_unmap_page(struct device *dev, dma_addr_t dma_address,
size_t size, enum dma_data_direction direction,
struct dma_attrs *attrs)
{
BUG_ON(!valid_dma_direction(direction));
__dma_sync_for_cpu(phys_to_virt(dma_address), size, direction);
}
EXPORT_SYMBOL(dma_unmap_page);
void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
enum dma_data_direction direction)
static void nios2_dma_unmap_sg(struct device *dev, struct scatterlist *sg,
int nhwentries, enum dma_data_direction direction,
struct dma_attrs *attrs)
{
void *addr;
int i;
BUG_ON(!valid_dma_direction(direction));
if (direction == DMA_TO_DEVICE)
return;
@@ -118,69 +144,54 @@ void dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
__dma_sync_for_cpu(addr, sg->length, direction);
}
}
EXPORT_SYMBOL(dma_unmap_sg);
void dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle,
size_t size, enum dma_data_direction direction)
static void nios2_dma_sync_single_for_cpu(struct device *dev,
dma_addr_t dma_handle, size_t size,
enum dma_data_direction direction)
{
BUG_ON(!valid_dma_direction(direction));
__dma_sync_for_cpu(phys_to_virt(dma_handle), size, direction);
}
EXPORT_SYMBOL(dma_sync_single_for_cpu);
void dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
size_t size, enum dma_data_direction direction)
static void nios2_dma_sync_single_for_device(struct device *dev,
dma_addr_t dma_handle, size_t size,
enum dma_data_direction direction)
{
BUG_ON(!valid_dma_direction(direction));
__dma_sync_for_device(phys_to_virt(dma_handle), size, direction);
}
EXPORT_SYMBOL(dma_sync_single_for_device);
void dma_sync_single_range_for_cpu(struct device *dev, dma_addr_t dma_handle,
unsigned long offset, size_t size,
enum dma_data_direction direction)
{
BUG_ON(!valid_dma_direction(direction));
__dma_sync_for_cpu(phys_to_virt(dma_handle), size, direction);
}
EXPORT_SYMBOL(dma_sync_single_range_for_cpu);
void dma_sync_single_range_for_device(struct device *dev, dma_addr_t dma_handle,
unsigned long offset, size_t size,
enum dma_data_direction direction)
{
BUG_ON(!valid_dma_direction(direction));
__dma_sync_for_device(phys_to_virt(dma_handle), size, direction);
}
EXPORT_SYMBOL(dma_sync_single_range_for_device);
void dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
enum dma_data_direction direction)
static void nios2_dma_sync_sg_for_cpu(struct device *dev,
struct scatterlist *sg, int nelems,
enum dma_data_direction direction)
{
int i;
BUG_ON(!valid_dma_direction(direction));
/* Make sure that gcc doesn't leave the empty loop body. */
for_each_sg(sg, sg, nelems, i)
__dma_sync_for_cpu(sg_virt(sg), sg->length, direction);
}
EXPORT_SYMBOL(dma_sync_sg_for_cpu);
void dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg,
int nelems, enum dma_data_direction direction)
static void nios2_dma_sync_sg_for_device(struct device *dev,
struct scatterlist *sg, int nelems,
enum dma_data_direction direction)
{
int i;
BUG_ON(!valid_dma_direction(direction));
/* Make sure that gcc doesn't leave the empty loop body. */
for_each_sg(sg, sg, nelems, i)
__dma_sync_for_device(sg_virt(sg), sg->length, direction);
}
EXPORT_SYMBOL(dma_sync_sg_for_device);
struct dma_map_ops nios2_dma_ops = {
.alloc = nios2_dma_alloc,
.free = nios2_dma_free,
.map_page = nios2_dma_map_page,
.unmap_page = nios2_dma_unmap_page,
.map_sg = nios2_dma_map_sg,
.unmap_sg = nios2_dma_unmap_sg,
.sync_single_for_device = nios2_dma_sync_single_for_device,
.sync_single_for_cpu = nios2_dma_sync_single_for_cpu,
.sync_sg_for_cpu = nios2_dma_sync_sg_for_cpu,
.sync_sg_for_device = nios2_dma_sync_sg_for_device,
};
EXPORT_SYMBOL(nios2_dma_ops);