diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-01-09 17:01:12 +0300 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-03-05 22:35:21 +0300 |
| commit | a31fba5d68cebf8f5fefd03e079dab94875e25f5 (patch) | |
| tree | e0483e4ba8912b6e8d7deb3d50bec5d47698460c | |
| parent | 948408ba3e2a67ed0f95e18ed5be1c622c2c5fc3 (diff) | |
| download | linux-a31fba5d68cebf8f5fefd03e079dab94875e25f5.tar.xz | |
dma-debug: add checks for sync_single_sg_*
Impact: add debug callbacks for dma_sync_sg_* functions
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| -rw-r--r-- | include/linux/dma-debug.h | 20 | ||||
| -rw-r--r-- | lib/dma-debug.c | 32 |
2 files changed, 52 insertions, 0 deletions
diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h index e9b903503adb..4985c6c5237e 100644 --- a/include/linux/dma-debug.h +++ b/include/linux/dma-debug.h @@ -68,6 +68,14 @@ extern void debug_dma_sync_single_range_for_device(struct device *dev, unsigned long offset, size_t size, int direction); +extern void debug_dma_sync_sg_for_cpu(struct device *dev, + struct scatterlist *sg, + int nelems, int direction); + +extern void debug_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sg, + int nelems, int direction); + #else /* CONFIG_DMA_API_DEBUG */ static inline void dma_debug_init(u32 num_entries) @@ -136,6 +144,18 @@ static inline void debug_dma_sync_single_range_for_device(struct device *dev, { } +static inline void debug_dma_sync_sg_for_cpu(struct device *dev, + struct scatterlist *sg, + int nelems, int direction) +{ +} + +static inline void debug_dma_sync_sg_for_device(struct device *dev, + struct scatterlist *sg, + int nelems, int direction) +{ +} + #endif /* CONFIG_DMA_API_DEBUG */ #endif /* __DMA_DEBUG_H */ diff --git a/lib/dma-debug.c b/lib/dma-debug.c index d1c0ac1831b7..9d11e89c2ee2 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -782,3 +782,35 @@ void debug_dma_sync_single_range_for_device(struct device *dev, } EXPORT_SYMBOL(debug_dma_sync_single_range_for_device); +void debug_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, + int nelems, int direction) +{ + struct scatterlist *s; + int i; + + if (unlikely(global_disable)) + return; + + for_each_sg(sg, s, nelems, i) { + check_sync(dev, s->dma_address, s->dma_length, 0, + direction, true); + } +} +EXPORT_SYMBOL(debug_dma_sync_sg_for_cpu); + +void debug_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, + int nelems, int direction) +{ + struct scatterlist *s; + int i; + + if (unlikely(global_disable)) + return; + + for_each_sg(sg, s, nelems, i) { + check_sync(dev, s->dma_address, s->dma_length, 0, + direction, false); + } +} +EXPORT_SYMBOL(debug_dma_sync_sg_for_device); + |