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staging: ion: do flush_cache_all for large size

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Change-Id: Iac8e5bd0d4405cb9faf84ca2f0579b085861997c
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
This commit is contained in:
Jianqun Xu
2021-08-04 16:00:14 +08:00
committed by Tao Huang
parent 47e86f6791
commit e1229de58b
1 changed files with 27 additions and 2 deletions
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29
drivers/staging/android/ion/ion.c
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@@ -29,6 +29,7 @@
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/vmalloc.h>
#include <asm/cacheflush.h>
#define CREATE_TRACE_POINTS
#include "ion_trace.h"
@@ -530,6 +531,18 @@ static int ion_dma_buf_end_cpu_access(struct dma_buf *dmabuf,
mutex_unlock(&buffer->lock);
}
if (buffer->size >= SZ_1M) {
if (direction == DMA_FROM_DEVICE) {
flush_cache_all();
goto exit;
} else {
#ifdef CONFIG_ARM64
__flush_dcache_all();
goto exit;
#endif
}
}
mutex_lock(&buffer->lock);
if (IS_ENABLED(CONFIG_ION_FORCE_DMA_SYNC)) {
struct device *dev = ion_dev;
@@ -557,7 +570,7 @@ static int ion_dma_buf_end_cpu_access(struct dma_buf *dmabuf,
}
unlock:
mutex_unlock(&buffer->lock);
exit:
return 0;
}
@@ -614,6 +627,18 @@ static int ion_dma_buf_end_cpu_access_partial(struct dma_buf *dmabuf,
struct ion_dma_buf_attachment *a;
int ret = 0;
if (len >= SZ_1M) {
if (direction == DMA_FROM_DEVICE) {
flush_cache_all();
goto exit;
} else {
#ifdef CONFIG_ARM64
__flush_dcache_all();
goto exit;
#endif
}
}
mutex_lock(&buffer->lock);
if (IS_ENABLED(CONFIG_ION_FORCE_DMA_SYNC)) {
if (dev) {
@@ -638,7 +663,7 @@ static int ion_dma_buf_end_cpu_access_partial(struct dma_buf *dmabuf,
}
unlock:
mutex_unlock(&buffer->lock);
exit:
return ret;
}