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path: root/lib/dma-debug.c
AgeCommit message (Collapse)Author
2009-03-17dma-debug: add checks for kernel text and rodataJoerg Roedel
Impact: get notified if a device dma maps illegal areas This patch adds a check to print a warning message when a device driver tries to map a memory area from the kernel text segment or rodata. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-17dma-debug: print stacktrace of mapping path on unmap errorDavid Woodhouse
Impact: saves stacktrace of a dma mapping and prints it if there is an error Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-17dma-debug: add function to dump dma mappingsDavid Woodhouse
This adds a function to dump the DMA mappings that the debugging code is aware of -- either for a single device, or for _all_ devices. This can be useful for debugging -- sticking a call to it in the DMA page fault handler, for example, to see if the faulting address _should_ be mapped or not, and hence work out whether it's IOMMU bugs we're seeing, or driver bugs. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-03-05dma-debug: add checks for sync_single_sg_*Joerg Roedel
Impact: add debug callbacks for dma_sync_sg_* functions Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-05dma-debug: add checks for sync_single_range_*Joerg Roedel
Impact: add debug callbacks for dma_sync_single_range_for_* functions Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-05dma-debug: add checks for sync_single_*Joerg Roedel
Impact: add debug callbacks for dma_sync_single_for_* functions Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-05dma-debug: add checking for [alloc|free]_coherentJoerg Roedel
Impact: add debug callbacks for dma_[alloc|free]_coherent Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-05dma-debug: add add checking for map/unmap_sgJoerg Roedel
Impact: add debug callbacks for dma_{un}map_sg Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-05dma-debug: add checking for map/unmap_page/singleJoerg Roedel
Impact: add debug callbacks for dma_{un}map_[page|single] Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-05dma-debug: add core checking functionsJoerg Roedel
Impact: add functions to check on dma unmap and sync Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-05dma-debug: add debugfs interfaceJoerg Roedel
Impact: add debugfs interface for configuring DMA-API debugging Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-05dma-debug: add kernel command line parametersJoerg Roedel
Impact: add dma_debug= and dma_debug_entries= kernel parameters Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-05dma-debug: add initialization codeJoerg Roedel
Impact: add code to initialize dma-debug core data structures Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-05dma-debug: add allocator codeJoerg Roedel
Impact: add allocator code for struct dma_debug_entry Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-05dma-debug: add hash functions for dma_debug_entriesJoerg Roedel
Impact: implement necessary functions for the core hash Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2009-03-05dma-debug: add header file and core data structuresJoerg Roedel
Impact: add groundwork for DMA-API debugging Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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