Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 09/16] dma-debug: add checking for map/unmap_single | Date | Fri, 9 Jan 2009 17:19:23 +0100 |
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Impact: add debug callbacks for dma_{un}map_single
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- include/linux/dma-debug.h | 19 +++++++++++++++++++ lib/dma-debug.c | 41 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 60 insertions(+), 0 deletions(-)
diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h index 345d538..82ae9ca 100644 --- a/include/linux/dma-debug.h +++ b/include/linux/dma-debug.h @@ -28,12 +28,31 @@ struct device; extern void dma_debug_init(u32 num_entries); +extern void debug_map_single(struct device *dev, void *ptr, size_t size, + int direction, dma_addr_t dma_addr); + +extern void debug_unmap_single(struct device *dev, dma_addr_t addr, + size_t size, int direction); + + #else /* CONFIG_DMA_API_DEBUG */ static inline void dma_debug_init(u32 num_entries) { } +static inline void debug_map_single(struct device *dev, void *ptr, + size_t size, int direction, + dma_addr_t dma_addr) +{ +} + +static inline void debug_unmap_single(struct device *dev, dma_addr_t addr, + size_t size, int direction) +{ +} + + #endif /* CONFIG_DMA_API_DEBUG */ #endif /* __DMA_DEBUG_H */ diff --git a/lib/dma-debug.c b/lib/dma-debug.c index 9f730a4..d4d14e5 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -510,3 +510,44 @@ out: } +void debug_map_single(struct device *dev, void *ptr, size_t size, + int direction, dma_addr_t dma_addr) +{ + struct dma_debug_entry *entry; + + if (global_disable) + return; + + entry = dma_entry_alloc(); + if (!entry) + return; + + entry->dev = dev; + entry->type = dma_debug_single; + entry->cpu_addr = ptr; + entry->dev_addr = dma_addr; + entry->size = size; + entry->direction = direction; + + add_dma_entry(entry); +} +EXPORT_SYMBOL(debug_map_single); + +void debug_unmap_single(struct device *dev, dma_addr_t addr, + size_t size, int direction) +{ + struct dma_debug_entry ref = { + .type = dma_debug_single, + .dev = dev, + .dev_addr = addr, + .size = size, + .direction = direction, + }; + + if (global_disable) + return; + + check_unmap(&ref); +} +EXPORT_SYMBOL(debug_unmap_single); + -- 1.5.6.4
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