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* dma-debug: add dma_debug_resize_entries() to adjust the number of ↵FUJITA Tomonori2009-04-151-0/+7
| | | | | | | | | | | | | | | | | | | | | dma_debug_entries We use a static value for the number of dma_debug_entries. It can be overwritten by a kernel command line option. Some IOMMUs (e.g. GART) can't set an appropriate value by a kernel command line option because they can't know such value until they finish initializing up their hardware. This patch adds dma_debug_resize_entries() enables IOMMUs to adjust the number of dma_debug_entries anytime. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Cc: fujita.tomonori@lab.ntt.co.jp Cc: akpm@linux-foundation.org LKML-Reference: <20090415182234R.fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* dma-debug: fix dma_debug_add_bus() definition for !CONFIG_DMA_API_DEBUGIngo Molnar2009-03-181-1/+1
| | | | | | | | | | | | | | | Impact: build fix Fix: arch/x86/kvm/x86.o: In function `dma_debug_add_bus': (.text+0x0): multiple definition of `dma_debug_add_bus' dma_debug_add_bus() should be a static inline function. Cc: Joerg Roedel <joerg.roedel@amd.com> LKML-Reference: <20090317120112.GP6159@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* dma-debug: add a check dma memory leaksJoerg Roedel2009-03-171-0/+7
| | | | | | | | | Impact: allow architectures to monitor busses for dma mem leakage This patch adds checking code to detect if a device has pending DMA operations when it is about to be unbound from its device driver. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* dma-debug: add function to dump dma mappingsDavid Woodhouse2009-03-171-0/+6
| | | | | | | | | | | | 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>
* dma-debug: add checks for sync_single_sg_*Joerg Roedel2009-03-051-0/+20
| | | | | | Impact: add debug callbacks for dma_sync_sg_* functions Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* dma-debug: add checks for sync_single_range_*Joerg Roedel2009-03-051-0/+27
| | | | | | Impact: add debug callbacks for dma_sync_single_range_for_* functions Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* dma-debug: add checks for sync_single_*Joerg Roedel2009-03-051-0/+20
| | | | | | Impact: add debug callbacks for dma_sync_single_for_* functions Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* dma-debug: add checking for [alloc|free]_coherentJoerg Roedel2009-03-051-0/+16
| | | | | | Impact: add debug callbacks for dma_[alloc|free]_coherent Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* dma-debug: add add checking for map/unmap_sgJoerg Roedel2009-03-051-0/+16
| | | | | | Impact: add debug callbacks for dma_{un}map_sg Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* dma-debug: add checking for map/unmap_page/singleJoerg Roedel2009-03-051-0/+23
| | | | | | Impact: add debug callbacks for dma_{un}map_[page|single] Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* dma-debug: add initialization codeJoerg Roedel2009-03-051-0/+14
| | | | | | Impact: add code to initialize dma-debug core data structures Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
* dma-debug: add header file and core data structuresJoerg Roedel2009-03-051-0/+25
Impact: add groundwork for DMA-API debugging Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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