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path: root/drivers/dma/iop-adma.c
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2016-08-08dmaengine: iop-adma: convert callback to helper functionDave Jiang
This is in preperation of moving to a callback that provides results to the callback for the transaction. The conversion will maintain current behavior and the driver must convert to new callback mechanism at a later time in order to receive results. Signed-off-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-03-09dma, mm/pat: Rename dma_*_writecombine() to dma_*_wc()Luis R. Rodriguez
Rename dma_*_writecombine() to dma_*_wc(), so that the naming is coherent across the various write-combining APIs. Keep the old names for compatibility for a while, these can be removed at a later time. A guard is left to enable backporting of the rename, and later remove of the old mapping defines seemlessly. Build tested successfully with allmodconfig. The following Coccinelle SmPL patch was used for this simple transformation: @ rename_dma_alloc_writecombine @ expression dev, size, dma_addr, gfp; @@ -dma_alloc_writecombine(dev, size, dma_addr, gfp) +dma_alloc_wc(dev, size, dma_addr, gfp) @ rename_dma_free_writecombine @ expression dev, size, cpu_addr, dma_addr; @@ -dma_free_writecombine(dev, size, cpu_addr, dma_addr) +dma_free_wc(dev, size, cpu_addr, dma_addr) @ rename_dma_mmap_writecombine @ expression dev, vma, cpu_addr, dma_addr, size; @@ -dma_mmap_writecombine(dev, vma, cpu_addr, dma_addr, size) +dma_mmap_wc(dev, vma, cpu_addr, dma_addr, size) We also keep the old names as compatibility helpers, and guard against their definition to make backporting easier. Generated-by: Coccinelle SmPL Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: airlied@linux.ie Cc: akpm@linux-foundation.org Cc: benh@kernel.crashing.org Cc: bhelgaas@google.com Cc: bp@suse.de Cc: dan.j.williams@intel.com Cc: daniel.vetter@ffwll.ch Cc: dhowells@redhat.com Cc: julia.lawall@lip6.fr Cc: konrad.wilk@oracle.com Cc: linux-fbdev@vger.kernel.org Cc: linux-pci@vger.kernel.org Cc: luto@amacapital.net Cc: mst@redhat.com Cc: tomi.valkeinen@ti.com Cc: toshi.kani@hp.com Cc: vinod.koul@intel.com Cc: xen-devel@lists.xensource.com Link: http://lkml.kernel.org/r/1453516462-4844-1-git-send-email-mcgrof@do-not-panic.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-08-25drivers/dma/iop-adma: Use dma_alloc_writecombine() kernel-styleLuis R. Rodriguez
dma_alloc_writecombine()'s call and return value check is tangled in all in one call. Untangle both calls according to kernel coding style. Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> Signed-off-by: Borislav Petkov <bp@suse.de> Acked-by: Vinod Koul <vinod.koul@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: airlied@linux.ie Cc: benh@kernel.crashing.org Cc: bhelgaas@google.com Cc: daniel.vetter@ffwll.ch Cc: dmaengine@vger.kernel.org Cc: konrad.wilk@oracle.com Cc: luto@amacapital.net Cc: mst@redhat.com Cc: tomi.valkeinen@ti.com Cc: toshi.kani@hp.com Cc: xen-devel@lists.xensource.com Link: http://lkml.kernel.org/r/1440443613-13696-10-git-send-email-mcgrof@do-not-panic.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-16dmaengine: Remove FSF mailing addressesJarkko Nikula
Free Software Foundation mailing address has been moved in the past and some of the addresses here are outdated. Remove them from file headers since the COPYING file in the kernel sources includes it. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-11-06dmaengine: Remove .owner field for driverKiran Padwal
There is no need to init .owner field. Based on the patch from Peter Griffin <peter.griffin@linaro.org> "mmc: remove .owner field for drivers using module_platform_driver" This patch removes the superflous .owner field for drivers which use the module_platform_driver API, as this is overriden in platform_driver_register anyway." Signed-off-by: Kiran Padwal <kiran.padwal@smartplayin.com> [for nvidia] Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-11-16Merge commit 'dmaengine-3.13-v2' of ↵Vinod Koul
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine Pull dmaengine changes from Dan 1/ Bartlomiej and Dan finalized a rework of the dma address unmap implementation. 2/ In the course of testing 1/ a collection of enhancements to dmatest fell out. Notably basic performance statistics, and fixed / enhanced test control through new module parameters 'run', 'wait', 'noverify', and 'verbose'. Thanks to Andriy and Linus for their review. 3/ Testing the raid related corner cases of 1/ triggered bugs in the recently added 16-source operation support in the ioatdma driver. 4/ Some minor fixes / cleanups to mv_xor and ioatdma. Conflicts: drivers/dma/dmatest.c Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-11-14dmaengine: remove DMA unmap from driversBartlomiej Zolnierkiewicz
Remove support for DMA unmapping from drivers as it is no longer needed (DMA core code is now handling it). Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> [djbw: fix up chan2parent() unused warning in drivers/dma/dw/core.c] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2013-11-13dmaengine: prepare for generic 'unmap' dataDan Williams
Add a hook for a common dma unmap implementation to enable removal of the per driver custom unmap code. (A reworked version of Bartlomiej Zolnierkiewicz's patches to remove the custom callbacks and the size increase of dma_async_tx_descriptor for drivers that don't care about raid). Cc: Vinod Koul <vinod.koul@intel.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Dave Jiang <dave.jiang@intel.com> [bzolnier: prepare pl330 driver for adding missing unmap while at it] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2013-10-25dmaengine: iop: use DMA_COMPLETE for dma completion statusVinod Koul
Acked-by: Dan Williams <dan.j.williams@intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-08-13dma: use dev_get_platdata()Jingoo Han
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-07-09drivers/dma/iop-adma.c: fix new warningsOlof Johansson
The recent "drivers/dma: remove unused support for MEMSET operations" change has fallout from lack of build testing by the author. This fixes: drivers/dma/iop-adma.c:1020:13: warning: unused variable 'dma_addr' [-Wunused-variable] drivers/dma/iop-adma.c:1519:2: warning: format '%s' expects a matching 'char *' argument [-Wformat=] Signed-off-by: Olof Johansson <olof@lixom.net> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03drivers/dma: remove unused support for MEMSET operationsBartlomiej Zolnierkiewicz
There have never been any real users of MEMSET operations since they have been introduced in January 2007 by commit 7405f74badf4 ("dmaengine: refactor dmaengine around dma_async_tx_descriptor"). Therefore remove support for them for now, it can be always brought back when needed. [sebastian.hesselbarth@gmail.com: fix drivers/dma/mv_xor] Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Cc: Vinod Koul <vinod.koul@intel.com> Acked-by: Dan Williams <djbw@fb.com> Cc: Tomasz Figa <t.figa@samsung.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Olof Johansson <olof@lixom.net> Cc: Kevin Hilman <khilman@linaro.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-26Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull slave-dmaengine updates from Vinod Koul: "This is fairly big pull by my standards as I had missed last merge window. So we have the support for device tree for slave-dmaengine, large updates to dw_dmac driver from Andy for reusing on different architectures. Along with this we have fixes on bunch of the drivers" Fix up trivial conflicts, usually due to #include line movement next to each other. * 'next' of git://git.infradead.org/users/vkoul/slave-dma: (111 commits) Revert "ARM: SPEAr13xx: Pass DW DMAC platform data from DT" ARM: dts: pl330: Add #dma-cells for generic dma binding support DMA: PL330: Register the DMA controller with the generic DMA helpers DMA: PL330: Add xlate function DMA: PL330: Add new pl330 filter for DT case. dma: tegra20-apb-dma: remove unnecessary assignment edma: do not waste memory for dma_mask dma: coh901318: set residue only if dma is in progress dma: coh901318: avoid unbalanced locking dmaengine.h: remove redundant else keyword dma: of-dma: protect list write operation by spin_lock dmaengine: ste_dma40: do not remove descriptors for cyclic transfers dma: of-dma.c: fix memory leakage dw_dmac: apply default dma_mask if needed dmaengine: ioat - fix spare sparse complain dmaengine: move drivers/of/dma.c -> drivers/dma/of-dma.c ioatdma: fix race between updating ioat->head and IOAT_COMPLETION_PENDING dw_dmac: add support for Lynxpoint DMA controllers dw_dmac: return proper residue value dw_dmac: fill individual length of descriptor ...
2013-01-07dma: Convert dev_printk(KERN_<LEVEL> to dev_<level>(Joe Perches
dev_<level> calls take less code than dev_printk(KERN_<LEVEL> and reducing object size is good. Coalesce formats for easier grep. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2013-01-03Drivers: dma: remove __dev* attributes.Greg Kroah-Hartman
CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Viresh Kumar <viresh.linux@gmail.com> Cc: Dan Williams <djbw@fb.com> Cc: Vinod Koul <vinod.koul@intel.com> Cc: Barry Song <baohua.song@csr.com> Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Cc: Alexander Duyck <alexander.h.duyck@intel.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Jassi Brar <jassisinghbrar@gmail.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28dma: remove use of __devinitBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devinit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Cc: Li Yang <leoli@freescale.com> Cc: Zhang Wei <zw@zh-kernel.org> Cc: Barry Song <baohua.song@csr.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-11-28dma: remove use of __devexit_pBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Acked-by: Barry Song <baohua.song@csr.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-04-10Merge tag 'dmaengine-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine Pull dmaengine fixes from Dan Williams: 1/ regression fix for Xen as it now trips over a broken assumption about the dma address size on 32-bit builds 2/ new quirk for netdma to ignore dma channels that cannot meet netdma alignment requirements 3/ fixes for two long standing issues in ioatdma (ring size overflow) and iop-adma (potential stack corruption) * tag 'dmaengine-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine: netdma: adding alignment check for NETDMA ops ioatdma: DMA copy alignment needed to address IOAT DMA silicon errata ioat: ring size variables need to be 32bit to avoid overflow iop-adma: Corrected array overflow in RAID6 Xscale(R) test. ioat: fix size of 'completion' for Xen
2012-03-29Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull slave-dmaengine update from Vinod Koul: "This includes the cookie cleanup by Russell, the addition of context parameter for dmaengine APIs, more arm dmaengine driver cleanup by moving code to dmaengine, this time for imx by Javier and pl330 by Boojin along with the usual driver fixes." Fix up some fairly trivial conflicts with various other cleanups. * 'next' of git://git.infradead.org/users/vkoul/slave-dma: (67 commits) dmaengine: imx: fix the build failure on x86_64 dmaengine: i.MX: Fix merge of cookie branch. dmaengine: i.MX: Add support for interleaved transfers. dmaengine: imx-dma: use 'dev_dbg' and 'dev_warn' for messages. dmaengine: imx-dma: remove 'imx_dmav1_baseaddr' and 'dma_clk'. dmaengine: imx-dma: remove unused arg of imxdma_sg_next. dmaengine: imx-dma: remove internal structure. dmaengine: imx-dma: remove 'resbytes' field of 'internal' structure. dmaengine: imx-dma: remove 'in_use' field of 'internal' structure. dmaengine: imx-dma: remove sg member from internal structure. dmaengine: imx-dma: remove 'imxdma_setup_sg_hw' function. dmaengine: imx-dma: remove 'imxdma_config_channel_hw' function. dmaengine: imx-dma: remove 'imxdma_setup_mem2mem_hw' function. dmaengine: imx-dma: remove dma_mode member of internal structure. dmaengine: imx-dma: remove data member from internal structure. dmaengine: imx-dma: merge old dma-v1.c with imx-dma.c dmaengine: at_hdmac: add slave config operation dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic dmaengine/dma_slave: introduce inline wrappers dma: imx-sdma: Treat firmware messages as warnings instead of erros ...
2012-03-28iop-adma: Corrected array overflow in RAID6 Xscale(R) test.Don Morris
Bug: cppcheck reported overflow in array assignment (for loop walks 0 to IOP_ADMA_NUM_SRC_TEST+2, array size is IOP_ADMA_NUM_SRC_TEST). Reported as: https://bugzilla.kernel.org/show_bug.cgi?id=42677 Test code pq_src array was grown by two elements to correspond with actual usage (IOP_ADMA_NUM_SRC_TEST+2), stack consumption was kept constant by modifying the pq_dest two element array which is only used when pq_src is referenced up to IOP_ADMA_NUM_SRC_TEST elements into the address of the new last two elements of the pq_src array. This is presumed to be the original intent but would be reliant on compilers always having pq_dest contiguous with the final element of pq_src. Note: This is a re-send of a request for review from two weeks ago. Looking for review (or shootdown), adding LKML to list for a wider audience. Thanks. Updated per review comments of Sergei Shtylyov <sshtylyov@mvista.com> Signed-off-by: Don Morris <don.morris@hp.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2012-03-13dmaengine: fix for cookie changes and mergeVinod Koul
Fixed trivial issues in drivers: drivers/dma/imx-sdma.c drivers/dma/intel_mid_dma.c drivers/dma/ioat/dma_v3.c drivers/dma/iop-adma.c drivers/dma/sirf-dma.c drivers/dma/timb_dma.c Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-13dmaengine: ensure all DMA engine drivers initialize their cookiesRussell King - ARM Linux
Ensure all DMA engine drivers initialize their cookies in the same way, so that they all behave in a similar fashion. This means their first issued cookie will be 2 rather than 1, and will increment to INT_MAX before returning 1 and starting over. In connection with this, Dan Williams said: > Russell King wrote: > > Secondly, some DMA engine drivers initialize the dma_chan cookie to 0, > > others to 1.  Is there a reason for this, or are these all buggy? > > I know that ioat and iop-adma expect 0 to mean "I have cleaned up this > descriptor and it is idle", and would break if zero was an in-flight > cookie value. The reserved usage of zero is an driver internal > concern, but I have no problem formalizing it as a reserved value. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-13dmaengine: fix cookie handling in iop-adma.c and ppc4xx/adma.cRussell King - ARM Linux
Dan Williams said: > > Russell King wrote: > > Firstly, we have DMA_MIN_COOKIE which has value 1 - so any cookies below > > that aren't valid.  That seems sane. > > > > We seem to have different behaviours: > > > > -       cookie = c->cookie; > > -       cookie++; > > -       if (cookie < 0) > > -               cookie = 1; > > -       c->cookie = cookie; > > -       tx->cookie = cookie; > > > > c->cookie here is initialized to zero, so the first cookie given out will > > be 1.  This is how most DMA engine drivers implement this. > > > > Then we have this: > > > >                cookie = chan->common.cookie; > >                cookie++; > >                if (cookie <= 1) > >                        cookie = 2; > > > >                /* initialize the completed cookie to be less than > >                 * the most recently used cookie > >                 */ > >                chan->common.completed_cookie = cookie - 1; > >                chan->common.cookie = sw_desc->async_tx.cookie = cookie; > > > > Again, chan->common.cookie starts off at 0.  The first cookie given out > > will be 2, and 1 will never be used.  There are three drivers which > > implement it this way. > > > > Why is there this difference, and can these three be corrected to behave > > the same way as the first (and therefore the assignment of cookies > > consolidated?) > > Yes, they should be consolidated, and I believe they have drifted only > because there were no good common helpers and murphy's law took over. So lets fix this up to use the common dma_cookie_assign() helper. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-13dmaengine: consolidate tx_status functionsRussell King - ARM Linux
Now that we have the completed cookie in the dma_chan structure, we can consolidate the tx_status functions by providing a function to set the txstate structure and returning the DMA status. We also provide a separate helper to set the residue for cookies which are still in progress. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-13dmaengine: consolidate assignment of DMA cookiesRussell King - ARM Linux
Everyone deals with assigning DMA cookies in the same way (it's part of the API so they should be), so lets consolidate the common code into a helper function to avoid this duplication. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-13dmaengine: add private header fileRussell King - ARM Linux
Add a local private header file to contain definitions and declarations which should only be used by DMA engine drivers. We also fix linux/dmaengine.h to use LINUX_DMAENGINE_H to guard against multiple inclusion. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-03-13dmaengine: move last completed cookie into generic dma_chan structureRussell King - ARM Linux
Every DMA engine implementation declares a last completed dma cookie in their private dma channel structures. This is pointless, and forces driver specific code. Move this out into the common dma_chan structure. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Tested-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jassi Brar <jassisinghbrar@gmail.com> [imx-sdma.c & mxs-dma.c] Tested-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-02-05dma: Fix typo in iop-adma.cMasanari Iida
Correct spelling "allocted" to "allocated" in drivers/dma/iop-adma.c Signed-off-by: Masanari Iida <standby24x7@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-12-05dmaengine: convert drivers/dma/* to use module_platform_driver()Axel Lin
This patch converts the drivers in drivers/dma/* to use the module_platform_driver() macro which makes the code smaller and a bit simpler. Cc: Dan Williams <dan.j.williams@intel.com> Cc: Piotr Ziecik <kosmo@semihalf.com> Cc: Rongjun Ying <rongjun.ying@csr.com> Cc: Barry Song <21cnbao@gmail.com> Cc: Pelagicore AB <info@pelagicore.com> Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2011-11-17dma: fix spacing for method declaration, coding style issue in iop-adma.cCiaran McCormick
Signed-off-by: Ciaran McCormick <ciaranmccormick@gmail.com> Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2011-03-31dma: use BUG_ON correctly in iop-adma.c, v4Coly Li
This patch makes BUG_ON() usage correct in drivers/dma/iop-adma.c. Cc: Dan Williams <dan.j.williams@intel.com> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Coly Li <bosong.ly@taobao.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2011-01-14Update CONFIG_MD_RAID6_PQ to CONFIG_RAID6_PQ in drivers/dma/iop-adma.cWei Yongquan
Commit f5e70d0fe3ea990cfb3fc8d7f76a719adcb1e0b5 renamed MD_RAID6_PQ to RAID6_PQ, but iop-adma.c didn't update synchronously. Signed-off-by: Wei Yongquan <weiyqlq@gmail.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-05-17Merge branch 'ioat' into dmaengineDan Williams
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-26dmaengine: provide helper for setting txstateDan Williams
Simple conditional struct filler to cut out some duplicated code. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-03-26DMAENGINE: generic channel status v2Linus Walleij
Convert the device_is_tx_complete() operation on the DMA engine to a generic device_tx_status()operation which can return three states, DMA_TX_RUNNING, DMA_TX_COMPLETE, DMA_TX_PAUSED. [dan.j.williams@intel.com: update for timberdale] Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Maciej Sosnowski <maciej.sosnowski@intel.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Li Yang <leoli@freescale.com> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Cc: Magnus Damm <damm@opensource.se> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Cc: Joe Perches <joe@perches.com> Cc: Roland Dreier <rdreier@cisco.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-12-11iop-adma.c: use resource_size()H Hartley Sweeten
The size of the requested and ioremaped memory is off by 1. Use resource_size() to get the correct value. Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-09-08Merge branch 'dmaengine' into async-tx-nextDan Williams
Conflicts: crypto/async_tx/async_xor.c drivers/dma/ioat/dma_v2.h drivers/dma/ioat/pci.c drivers/md/raid5.c
2009-09-08Merge branch 'iop-raid6' into async-tx-nextDan Williams
2009-09-08iop-adma: implement a private tx_listDan Williams
Drop iop-adma's use of tx_list from struct dma_async_tx_descriptor in preparation for removal of this field. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-09-08dmaengine: cleanup unused transaction typesDan Williams
No drivers currently implement these operation types, so they can be deleted. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-08-29iop-adma: P+Q self testDan Williams
Even though the intent is to extend dmatest with P+Q tests there is still value in having an always-on sanity check to prevent an unintentionally broken driver from registering. This depends on raid6_pq.ko for verification, the side effect being that PQ capable channels will fail to register when raid6 is disabled. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-08-29iop-adma: P+Q support for iop13xx adma enginesDan Williams
iop33x support is not included because that engine is a bit more awkward to handle in that it can either be in xor mode or pq mode. The dmaengine/async_tx layers currently only comprehend static capabilities. Note iop13xx does not support hardware PQ continuation so the driver must handle the DMA_PREP_CONTINUE flag for operations across > 16 sources. From the comment for dma_maxpq: /* When an engine does not support native continuation we need 3 extra * source slots to reuse P and Q with the following coefficients: * 1/ {00} * P : remove P from Q', but use it as a source for P' * 2/ {01} * Q : use Q to continue Q' calculation * 3/ {00} * Q : subtract Q from P' to cancel (2) */ Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-08-29iop-adma: fix lockdep false positiveDan Williams
lockdep correctly identifies a potential recursive locking case for iop_chan->lock, but in the dependency submission case we expect that the same class will be acquired for both the parent dependency and the child channel. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-08-29iop-adma: cleanup iop_adma_run_tx_complete_actionsDan Williams
Replace 'desc->async_tx.' with 'tx->' [ Impact: pure cleanup ] Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-08-29async_tx: add support for asynchronous GF multiplicationDan Williams
[ Based on an original patch by Yuri Tikhonov ] This adds support for doing asynchronous GF multiplication by adding two additional functions to the async_tx API: async_gen_syndrome() does simultaneous XOR and Galois field multiplication of sources. async_syndrome_val() validates the given source buffers against known P and Q values. When a request is made to run async_pq against more than the hardware maximum number of supported sources we need to reuse the previous generated P and Q values as sources into the next operation. Care must be taken to remove Q from P' and P from Q'. For example to perform a 5 source pq op with hardware that only supports 4 sources at a time the following approach is taken: p, q = PQ(src0, src1, src2, src3, COEF({01}, {02}, {04}, {08})) p', q' = PQ(p, q, q, src4, COEF({00}, {01}, {00}, {10})) p' = p + q + q + src4 = p + src4 q' = {00}*p + {01}*q + {00}*q + {10}*src4 = q + {10}*src4 Note: 4 is the minimum acceptable maxpq otherwise we punt to synchronous-software path. The DMA_PREP_CONTINUE flag indicates to the driver to reuse p and q as sources (in the above manner) and fill the remaining slots up to maxpq with the new sources/coefficients. Note1: Some devices have native support for P+Q continuation and can skip this extra work. Devices with this capability can advertise it with dma_set_maxpq. It is up to each driver how to handle the DMA_PREP_CONTINUE flag. Note2: The api supports disabling the generation of P when generating Q, this is ignored by the synchronous path but is implemented by some dma devices to save unnecessary writes. In this case the continuation algorithm is simplified to only reuse Q as a source. Cc: H. Peter Anvin <hpa@zytor.com> Cc: David Woodhouse <David.Woodhouse@intel.com> Signed-off-by: Yuri Tikhonov <yur@emcraft.com> Signed-off-by: Ilya Yanok <yanok@emcraft.com> Reviewed-by: Andre Noll <maan@systemlinux.org> Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-04-08async_tx: rename zero_sum to valDan Williams
'zero_sum' does not properly describe the operation of generating parity and checking that it validates against an existing buffer. Change the name of the operation to 'val' (for 'validate'). This is in anticipation of the p+q case where it is a requirement to identify the target parity buffers separately from the source buffers, because the target parity buffers will not have corresponding pq coefficients. Reviewed-by: Andre Noll <maan@systemlinux.org> Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-25dmaengine: initialize tx_list in dma_async_tx_descriptor_initDan Williams
Centralize this common initialization (and one case where ipu_idmac is duplicating ->chan initialization). Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-03-08Merge branch 'fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: dmatest: fix use after free in dmatest_exit ipu_idmac: fix spinlock type iop-adma, mv_xor: fix mem leak on self-test setup failure fsldma: fix off by one in dma_halt I/OAT: fail self-test if callback test reaches timeout I/OAT: update driver version and copyright dates I/OAT: list usage cleanup I/OAT: set tcp_dma_copybreak to 256k for I/OAT ver.3 I/OAT: cancel watchdog before dma remove I/OAT: fail initialization on zero channels detection I/OAT: do not set DCACTRL_CMPL_WRITE_ENABLE for I/OAT ver.3 I/OAT: add verification for proper APICID_TAG_MAP setting by BIOS dmaengine: update kerneldoc
2009-03-04iop-adma, mv_xor: fix mem leak on self-test setup failureRoel Kluin
iop_adma_zero_sum_self_test has the brackets in the wrong place for the setup failure deallocation path. This error was duplicated in mv_xor_xor_self_test. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>