)]}' { "log": [ { "commit": "d2b7428eb0caa7c66e34b6ac869a43915b294123", "tree": "ad30d28a2078d1d9429c8f19815378c5da2c54f5", "parents": [ "955c757e090f41188764a0e488ba7036f7dbb215" ], "author": { "name": "Marek Szyprowski", "email": "m.szyprowski@samsung.com", "time": "Wed Jun 13 10:05:52 2012 +0200" }, "committer": { "name": "Marek Szyprowski", "email": "m.szyprowski@samsung.com", "time": "Mon Jul 30 12:25:46 2012 +0200" }, "message": "common: dma-mapping: introduce dma_get_sgtable() function\n\nThis patch adds dma_get_sgtable() function which is required to let\ndrivers to share the buffers allocated by DMA-mapping subsystem. Right\nnow the driver gets a dma address of the allocated buffer and the kernel\nvirtual mapping for it. If it wants to share it with other device (\u003d map\ninto its dma address space) it usually hacks around kernel virtual\naddresses to get pointers to pages or assumes that both devices share\nthe DMA address space. Both solutions are just hacks for the special\ncases, which should be avoided in the final version of buffer sharing.\n\nTo solve this issue in a generic way, a new call to DMA mapping has been\nintroduced - dma_get_sgtable(). It allocates a scatter-list which\ndescribes the allocated buffer and lets the driver(s) to use it with\nother device(s) by calling dma_map_sg() on it.\n\nThis patch provides a generic implementation based on virt_to_page()\ncall. Architectures which require more sophisticated translation might\nprovide their own get_sgtable() methods.\n\nSigned-off-by: Marek Szyprowski \u003cm.szyprowski@samsung.com\u003e\nReviewed-by: Kyungmin Park \u003ckyungmin.park@samsung.com\u003e\nReviewed-by: Daniel Vetter \u003cdaniel.vetter@ffwll.ch\u003e\n" }, { "commit": "64ccc9c033c6089b2d426dad3c56477ab066c999", "tree": "ffaec86ca326dfc83b78ce4005bf46c3ad98ceb9", "parents": [ "9fa8af91f0679f2abbebe1382b937264f3a8b981" ], "author": { "name": "Marek Szyprowski", "email": "m.szyprowski@samsung.com", "time": "Thu Jun 14 13:03:04 2012 +0200" }, "committer": { "name": "Marek Szyprowski", "email": "m.szyprowski@samsung.com", "time": "Mon Jul 30 12:25:46 2012 +0200" }, "message": "common: dma-mapping: add support for generic dma_mmap_* calls\n\nCommit 9adc5374 (\u0027common: dma-mapping: introduce mmap method\u0027) added a\ngeneric method for implementing mmap user call to dma_map_ops structure.\n\nThis patch converts ARM and PowerPC architectures (the only providers of\ndma_mmap_coherent/dma_mmap_writecombine calls) to use this generic\ndma_map_ops based call and adds a generic cross architecture\ndefinition for dma_mmap_attrs, dma_mmap_coherent, dma_mmap_writecombine\nfunctions.\n\nThe generic mmap virt_to_page-based fallback implementation is provided for\narchitectures which don\u0027t provide their own implementation for mmap method.\n\nSigned-off-by: Marek Szyprowski \u003cm.szyprowski@samsung.com\u003e\nReviewed-by: Kyungmin Park \u003ckyungmin.park@samsung.com\u003e\n" }, { "commit": "187f1882b5b0748b3c4c22274663fdb372ac0452", "tree": "36283f258cf65f03599a045d48bb05d0ec27f3f9", "parents": [ "50af5ead3b44ccf8bd2b4d2a50c1b610f557c480" ], "author": { "name": "Paul Gortmaker", "email": "paul.gortmaker@windriver.com", "time": "Wed Nov 23 20:12:59 2011 -0500" }, "committer": { "name": "Paul Gortmaker", "email": "paul.gortmaker@windriver.com", "time": "Sun Mar 04 17:54:34 2012 -0500" }, "message": "BUG: headers with BUG/BUG_ON etc. need linux/bug.h\n\nIf a header file is making use of BUG, BUG_ON, BUILD_BUG_ON, or any\nother BUG variant in a static inline (i.e. not in a #define) then\nthat header really should be including \u003clinux/bug.h\u003e and not just\nexpecting it to be implicitly present.\n\nWe can make this change risk-free, since if the files using these\nheaders didn\u0027t have exposure to linux/bug.h already, they would have\nbeen causing compile failures/warnings.\n\nSigned-off-by: Paul Gortmaker \u003cpaul.gortmaker@windriver.com\u003e\n" }, { "commit": "07a723097cd31e9c2def69ac4d42834a16f79219", "tree": "122c4c9e567dfe453fa4a948a648f0f26e381556", "parents": [ "1a4ceab195e66bce9c1638fdded6d92988100ba4" ], "author": { "name": "Clemens Ladisch", "email": "clemens@ladisch.de", "time": "Mon Oct 31 17:06:28 2011 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Mon Oct 31 17:30:44 2011 -0700" }, "message": "dma-mapping: fix sync_single_range_* DMA debugging\n\nCommit 5fd75a7850b5 (dma-mapping: remove unnecessary sync_single_range_*\nin dma_map_ops) unified not only the dma_map_ops but also the\ncorresponding debug_dma_sync_* calls. This led to spurious WARN()ings\nlike the following because the DMA debug code was no longer able to detect\nthe DMA buffer base address without the separate offset parameter:\n\nWARNING: at lib/dma-debug.c:911 check_sync+0xce/0x446()\nfirewire_ohci 0000:04:00.0: DMA-API: device driver tries to sync DMA memory it has not allocated [device address\u003d0x00000000cedaa400] [size\u003d1024 bytes]\nCall Trace: ...\n [\u003cffffffff811326a5\u003e] check_sync+0xce/0x446\n [\u003cffffffff81132ad9\u003e] debug_dma_sync_single_for_device+0x39/0x3b\n [\u003cffffffffa01d6e6a\u003e] ohci_queue_iso+0x4f3/0x77d [firewire_ohci]\n ...\n\nTo fix this, unshare the sync_single_* and sync_single_range_*\nimplementations so that we are able to call the correct debug_dma_sync_*\nfunctions.\n\n[akpm@linux-foundation.org: coding-style fixes]\nSigned-off-by: Clemens Ladisch \u003cclemens@ladisch.de\u003e\nCc: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nCc: Konrad Rzeszutek Wilk \u003ckonrad.wilk@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "5fd75a7850b5156aa93c9fb6404adb8f563b6e02", "tree": "1b5f21a907eb8182e2642c7dee73274d04d24a07", "parents": [ "38388301b7b9d2921b58cfa1cd9b14c02d508c63" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Wed May 26 14:44:18 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu May 27 09:12:52 2010 -0700" }, "message": "dma-mapping: remove unnecessary sync_single_range_* in dma_map_ops\n\nsync_single_range_for_cpu and sync_single_range_for_device hooks are\nunnecessary because sync_single_for_cpu and sync_single_for_device can\nbe used instead.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nReviewed-by: Konrad Rzeszutek Wilk \u003ckonrad.wilk@oracle.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "f33d7e2d2d113a63772bbc993cdec3b5327f0ef1", "tree": "1349305b4c3a39c87baab95beb05fa5b8dfc7750", "parents": [ "fc2a093e7ad23e935aa29e349bc27173c92f1a95" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Tue May 11 14:06:43 2010 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue May 11 17:33:41 2010 -0700" }, "message": "dma-mapping: fix dma_sync_single_range_*\n\ndma_sync_single_range_for_cpu() and dma_sync_single_range_for_device() use\na wrong address with a partial synchronization.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nReviewed-by: Konrad Rzeszutek Wilk \u003ckonrad.wilk@oracle.com\u003e\nCc: \u003cstable@kernel.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a8ad568dd8ca122aa8048ea067d3599820d1c1b4", "tree": "3d8e4674a254f24906c05e0f7be880cf495b39ed", "parents": [ "b683d42693c4e92b838117f5c6f7b90bfa1525c9" ], "author": { "name": "Arnd Bergmann", "email": "arnd@arndb.de", "time": "Mon Aug 10 11:53:10 2009 +0900" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Aug 10 09:34:57 2009 +0200" }, "message": "dma-ops: Remove flush_write_buffers() in dma-mapping-common.h\n\nThis moves flush_write_buffers() in\nasm-generic/dma-mapping-common.h to\narch/x86/kernel/pci-nommu.c.\n\nThe purpose of this patch is that, we can avoid defining NULL\nflush_write_buffers() on IA64 and SPARC.\n\ndma-mapping-common.h is used by X86 and IA64 (and SPARC soon)\nbut only X86 with CONFIG_X86_OOSTORE or CONFIG_X86_PPRO_FENCE\nactually uses flush_write_buffers(). CONFIG_X86_OOSTORE or\nCONFIG_X86_PPRO_FENCE is usable with only kernel/pci-nommu.c\n(that is, not usable with other X86 IOMMU implementations such\nas SWIOTLB, VT-d, etc) so we can safely move\nflush_write_buffers() in asm-generic/dma-mapping-common.h to\narch/x86/kernel/pci-nommu.c.\n\nThe further discussion is:\n\n http://lkml.org/lkml/2009/6/28/104\n\nSigned-off-by: Arnd Bergmann \u003carnd@arndb.de\u003e\nAcked-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nCc: davem@davemloft.net\nCc: tony.luck@intel.com\nCc: fenghua.yu@intel.com\nLKML-Reference: \u003c1249872797-1314-2-git-send-email-fujita.tomonori@lab.ntt.co.jp\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "c147d8ea3e2f6f953647f2347ae732fd99b32e73", "tree": "235159755038adfb0309f71ffe835fbe550da001", "parents": [ "7bf99fb673f18408be1ebc958321ef4c3f6da9e2" ], "author": { "name": "FUJITA Tomonori", "email": "fujita.tomonori@lab.ntt.co.jp", "time": "Wed Jun 17 16:28:10 2009 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 18 13:03:58 2009 -0700" }, "message": "dma-mapping: add asm-generic/dma-mapping-common.h\n\nWe unified x86 and IA64\u0027s handling of multiple dma mapping operations\n(struct dma_map_ops in linux/dma-mapping.h) so we can remove duplication\nin their arch/include/asm/dma-mapping.h.\n\nThis patchset adds include/asm-generic/dma-mapping-common.h that provides\nsome generic dma mapping function definitions for the users of struct\ndma_map_ops. This enables us to remove about 100 lines. This also\nenables us to easily add CONFIG_DMA_API_DEBUG support, which only x86\nsupports for now. The 4th patch adds CONFIG_DMA_API_DEBUG support to IA64\nby adding only 8 lines.\n\nThis patch:\n\nThis header file provides some mapping function definitions that the users\nof struct dma_map_ops can use.\n\nSigned-off-by: FUJITA Tomonori \u003cfujita.tomonori@lab.ntt.co.jp\u003e\nAcked-by: Joerg Roedel \u003cjoerg.roedel@amd.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: James Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\nCc: \"David S. Miller\" \u003cdavem@davemloft.net\u003e\nCc: Catalin Marinas \u003ccatalin.marinas@arm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" } ] }