lkml.org 
[lkml]   [2009]   [Jan]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 11/16] dma-debug: add checking for [alloc|free]_coherent
Date
Impact: add debug callbacks for dma_[alloc|free]_coherent

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
include/linux/dma-debug.h | 16 ++++++++++++++++
lib/dma-debug.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 61 insertions(+), 0 deletions(-)

diff --git a/include/linux/dma-debug.h b/include/linux/dma-debug.h
index b2131f4..a28a701 100644
--- a/include/linux/dma-debug.h
+++ b/include/linux/dma-debug.h
@@ -40,6 +40,12 @@ extern void debug_map_sg(struct device *dev, struct scatterlist *sg,
extern void debug_unmap_sg(struct device *dev, struct scatterlist *sglist,
int nelems, int dir);

+extern void debug_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t dma_addr, void *virt);
+
+extern void debug_free_coherent(struct device *dev, size_t size,
+ void *virt, dma_addr_t addr);
+
#else /* CONFIG_DMA_API_DEBUG */

static inline void dma_debug_init(u32 num_entries)
@@ -68,6 +74,16 @@ static inline void debug_unmap_sg(struct device *dev,
{
}

+static inline void debug_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t dma_addr, void *virt)
+{
+}
+
+static inline void debug_free_coherent(struct device *dev, size_t size,
+ void *virt, dma_addr_t addr)
+{
+}
+
#endif /* CONFIG_DMA_API_DEBUG */

#endif /* __DMA_DEBUG_H */
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index e6d45f9..a4a5b0f 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -604,3 +604,48 @@ void debug_unmap_sg(struct device *dev, struct scatterlist *sglist,
}
EXPORT_SYMBOL(debug_unmap_sg);

+void debug_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t dma_addr, void *virt)
+{
+ struct dma_debug_entry *entry;
+
+ if (global_disable)
+ return;
+
+ if (dma_addr == bad_dma_address)
+ return;
+
+ entry = dma_entry_alloc();
+ if (!entry)
+ return;
+
+ entry->type = dma_debug_coherent;
+ entry->dev = dev;
+ entry->cpu_addr = virt;
+ entry->size = size;
+ entry->dev_addr = dma_addr;
+ entry->direction = DMA_BIDIRECTIONAL;
+
+ add_dma_entry(entry);
+}
+EXPORT_SYMBOL(debug_alloc_coherent);
+
+void debug_free_coherent(struct device *dev, size_t size,
+ void *virt, dma_addr_t addr)
+{
+ struct dma_debug_entry ref = {
+ .type = dma_debug_coherent,
+ .dev = dev,
+ .cpu_addr = virt,
+ .dev_addr = addr,
+ .size = size,
+ .direction = DMA_BIDIRECTIONAL,
+ };
+
+ if (global_disable)
+ return;
+
+ check_unmap(&ref);
+}
+EXPORT_SYMBOL(debug_free_coherent);
+
--
1.5.6.4



\
 
 \ /
  Last update: 2009-01-09 17:27    [W:0.285 / U:3.288 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site