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2021-03-28Documentation: fpga: dfl: Add description for DFL UIO supportXu Yilun1-0/+26
This patch adds description for UIO support for dfl devices on DFL bus. Reviewed-by: Tom Rix <trix@redhat.com> Reviewed-by: Wu Hao <hao.wu@intel.com> Signed-off-by: Xu Yilun <yilun.xu@intel.com> Link: https://lore.kernel.org/r/1615168776-8553-3-git-send-email-yilun.xu@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-14fpga: dfl-pci: rectify ReST formattingLukas Bulwahn1-1/+2
Commit fa41d10589be ("fpga: dfl-pci: locate DFLs by PCIe vendor specific capability") provides documentation to the FPGA Device Feature List (DFL) Framework Overview, but introduced new documentation warnings: ./Documentation/fpga/dfl.rst: 505: WARNING: Title underline too short. 523: WARNING: Unexpected indentation. 523: WARNING: Blank line required after table. 524: WARNING: Block quote ends without a blank line; unexpected unindent. Rectify ReST formatting in ./Documentation/fpga/dfl.rst. Tested-by: Tom Rix <trix@redhat.com> Acked-by: Moritz Fischer <mdf@kernel.org> Acked-by: Matthew Gerlach <matthew.gerlach@linux.intel.com> Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com> Link: https://lore.kernel.org/r/20210111112113.27242-1-lukas.bulwahn@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-07fpga: dfl-pci: locate DFLs by PCIe vendor specific capabilityMatthew Gerlach1-0/+27
A PCIe vendor specific extended capability is introduced by Intel to specify the start of a number of DFLs. Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com> Signed-off-by: Moritz Fischer <mdf@kernel.org> Link: https://lore.kernel.org/r/20210107043714.991646-3-mdf@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-08-05Merge tag 'char-misc-5.9-rc1' of ↵Linus Torvalds1-0/+19
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver updates from Greg KH: "Here is the large set of char and misc and other driver subsystem patches for 5.9-rc1. Lots of new driver submissions in here, and cleanups and features for existing drivers. Highlights are: - habanalabs driver updates - coresight driver updates - nvmem driver updates - huge number of "W=1" build warning cleanups from Lee Jones - dyndbg updates - virtbox driver fixes and updates - soundwire driver updates - mei driver updates - phy driver updates - fpga driver updates - lots of smaller individual misc/char driver cleanups and fixes Full details are in the shortlog. All of these have been in linux-next with no reported issues" * tag 'char-misc-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (322 commits) habanalabs: remove unused but set variable 'ctx_asid' nvmem: qcom-spmi-sdam: Enable multiple devices dt-bindings: nvmem: SID: add binding for A100's SID controller nvmem: update Kconfig description nvmem: qfprom: Add fuse blowing support dt-bindings: nvmem: Add properties needed for blowing fuses dt-bindings: nvmem: qfprom: Convert to yaml nvmem: qfprom: use NVMEM_DEVID_AUTO for multiple instances nvmem: core: add support to auto devid nvmem: core: Add nvmem_cell_read_u8() nvmem: core: Grammar fixes for help text nvmem: sc27xx: add sc2730 efuse support nvmem: Enforce nvmem stride in the sysfs interface MAINTAINERS: Add git tree for NVMEM FRAMEWORK nvmem: sprd: Fix return value of sprd_efuse_probe() drivers: android: Fix the SPDX comment style drivers: android: Fix a variable declaration coding style issue drivers: android: Remove braces for a single statement if-else block drivers: android: Remove the use of else after return drivers: android: Fix a variable declaration coding style issue ...
2020-07-13Documentation: fpga: eliminate duplicated wordRandy Dunlap1-1/+1
Drop the doubled word "this". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Acked-by: Wu Hao <hao.wu@intel.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: linux-doc@vger.kernel.org Cc: Wu Hao <hao.wu@intel.com> Cc: linux-fpga@vger.kernel.org Link: https://lore.kernel.org/r/20200707180414.10467-6-rdunlap@infradead.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-07-06Documentation: fpga: dfl: add descriptions for interrupt related interfaces.Xu Yilun1-0/+19
This patch adds introductions of interrupt related interfaces for FME error reporting, port error reporting and AFU user interrupts features. Signed-off-by: Luwei Kang <luwei.kang@intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Signed-off-by: Xu Yilun <yilun.xu@intel.com> Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com> Acked-by: Wu Hao <hao.wu@intel.com> Signed-off-by: Moritz Fischer <mdf@kernel.org>
2020-04-28Documentation: fpga: dfl: add description for performance reporting supportXu Yilun1-0/+84
This patch adds description for performance reporting support for Device Feature List (DFL) based FPGA. Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Link: https://lore.kernel.org/r/1587949583-12058-2-git-send-email-hao.wu@intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-10-16Documentation: fpga: dfl: add descriptions for thermal/power management ↵Xu Yilun1-0/+10
interfaces This patch add introductions to thermal/power interfaces. They are implemented as hwmon sysfs interfaces by thermal/power private feature drivers. Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Moritz Fischer <mdf@kernel.org>
2019-09-03Documentation: fpga: dfl: add descriptions for virtualization and new ↵Wu Hao1-0/+105
interfaces. This patch adds virtualization support description for DFL based FPGA devices (based on PCIe SRIOV), and introductions to new interfaces added by new dfl private feature drivers. [mdf@kernel.org: Fixed up to make it work with new reStructuredText docs] Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Moritz Fischer <mdf@kernel.org>
2019-07-15docs: add some directories to the main documentation indexMauro Carvalho Chehab1-1/+1
The contents of those directories were orphaned at the documentation body. While those directories could likely be moved to be inside some guide, I'm opting to just adding their indexes to the main one, removing the :orphan: and adding the SPDX header. For the drivers, the rationale is that the documentation contains a mix of Kernelspace, uAPI and admin-guide. So, better to keep them on separate directories, as we've be doing with similar subsystem-specific docs that were not split yet. For the others, well... I'm too lazy to do the move. Also, it seems to make sense to keep at least some of those at the main dir (like kbuild, for example). In any case, a latter patch could do the move. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
2019-06-14docs: fpga: convert docs to ReST and rename to *.rstMauro Carvalho Chehab2-26/+49
The dfl.txt file is almost there. It needs just a few adjustments to be properly parsed. The conversion is actually: - add blank lines and identation in order to identify paragraphs; - fix tables markups; - add some lists markups; - mark literal blocks; - adjust title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2018-07-15docs: fpga: add a document for FPGA Device Feature List (DFL) Framework OverviewWu Hao1-0/+285
Add a document for FPGA Device Feature List (DFL) Framework Overview. Signed-off-by: Enno Luebbers <enno.luebbers@intel.com> Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Signed-off-by: Wu Hao <hao.wu@intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-25documentation: fpga: move fpga-region.txt to driver-apiAlan Tull1-94/+0
Move Documentation/fpga/fpga-region.txt to driver-api/fpga/fpga-region.rst. Including: - Add it to driver-api/fpga/index.rst - Formatting changes to build cleanly as ReST documentation - Some rewrites for better flow as a ReST doc such as moving API reference to the end of the doc - Rewrite API reference section to refer to kernel-doc documentation in fpga-region.c driver code Signed-off-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-25documentation: fpga: move fpga-mgr.txt to driver-apiAlan Tull1-218/+0
Move Documentation/fpga/fpga-mgr.txt to driver-api/fpga/fpga-mgr.rst and: - Add to driver-api/fpga/index.rst - Format changes so documentation builds cleanly. - Minor rewrites that make the doc flow better as ReST documentation. - Such as moving API reference to end of doc - Change API reference section to refer to kernel-doc documentation in fpga-mgr.c driver code rather than statically defining each function. Signed-off-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-25Documentation: fpga: move fpga overview to driver-apiAlan Tull1-23/+0
Start of moving Documentation/fpga/*.txt to driver-api, including: - Add new directory driver-api/fpga - Add new file driver-api/fpga/index.rst - Add driver-api/fpga to driver-api/index.rst - Move Documentation/fpga/overview.txt to driver-api/fpga/intro.rst - Formatting and rewrites so that intro.rst will build cleanly and form a good introduction to the rest of the docs to be added. Signed-off-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-25fpga: region: change api, add fpga_region_create/freeAlan Tull1-2/+1
Add fpga_region_create/free API functions. Change fpga_region_register to take FPGA region struct as the only parameter. Change fpga_region_unregister to return void. struct fpga_region *fpga_region_create(struct device *dev, struct fpga_manager *mgr, int (*get_bridges)(struct fpga_region *)); void fpga_region_free(struct fpga_region *region); int fpga_region_register(struct fpga_region *region); void fpga_region_unregister(struct fpga_region *region); Remove groups storage from struct fpga_region, it's not needed. Callers can just "region->dev.groups = groups;" after calling fpga_region_create. Update the drivers that call fpga_region_register with the new API. Signed-off-by: Alan Tull <atull@kernel.org> Signed-off-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-05-25fpga: manager: change api, don't use drvdataAlan Tull1-8/+27
Change fpga_mgr_register to not set or use drvdata. This supports the case where a PCIe device has more than one manager. Add fpga_mgr_create/free functions. Change fpga_mgr_register and fpga_mgr_unregister functions to take the mgr struct as their only parameter. struct fpga_manager *fpga_mgr_create(struct device *dev, const char *name, const struct fpga_manager_ops *mops, void *priv); void fpga_mgr_free(struct fpga_manager *mgr); int fpga_mgr_register(struct fpga_manager *mgr); void fpga_mgr_unregister(struct fpga_manager *mgr); Update the drivers that call fpga_mgr_register with the new API. Signed-off-by: Alan Tull <atull@kernel.org> [Moritz: Fixup whitespace issue] Reported-by: Jiuyue Ma <majiuyue@huawei.com> Signed-off-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-28fpga: mgr: separate getting/locking FPGA managerAlan Tull1-9/+26
Previously when the user gets a FPGA manager, it was locked and nobody else could use it for programming. This commit makes it straightforward to save a reference to an FPGA manager and only lock it when programming the FPGA. Add functions that get an FPGA manager's mutex for exclusive use: * fpga_mgr_lock * fpga_mgr_unlock The following functions no longer lock an FPGA manager's mutex: * of_fpga_mgr_get * fpga_mgr_get * fpga_mgr_put Signed-off-by: Alan Tull <atull@kernel.org> Acked-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-28fpga: mgr: API change to replace fpga load functions with single functionAlan Tull3-68/+169
fpga-mgr has three methods for programming FPGAs, depending on whether the image is in a scatter gather list, a contiguous buffer, or a firmware file. This makes it difficult to write upper layers as the caller has to assume whether the FPGA image is in a sg table, as a single buffer, or a firmware file. This commit moves these parameters to struct fpga_image_info and adds a single function for programming fpgas. New functions: * fpga_mgr_load - given fpga manager and struct fpga_image_info, program the fpga. * fpga_image_info_alloc - alloc a struct fpga_image_info. * fpga_image_info_free - free a struct fpga_image_info. These three functions are unexported: * fpga_mgr_buf_load_sg * fpga_mgr_buf_load * fpga_mgr_firmware_load Also use devm_kstrdup to copy firmware_name so we aren't making assumptions about where it comes from when allocing/freeing the struct fpga_image_info. API documentation has been updated and a new document for FPGA region has been added. Signed-off-by: Alan Tull <atull@kernel.org> Acked-by: Moritz Fischer <mdf@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-02-10fpga: Add scatterlist based programmingJason Gunthorpe1-3/+16
Requiring contiguous kernel memory is not a good idea, this is a limited resource and allocation can fail under normal work loads. This introduces a .write_sg op that supporting drivers can provide to DMA directly from dis-contiguous memory and a new entry point fpga_mgr_buf_load_sg that users can call to directly provide page lists. The full matrix of compatibility is provided, either the linear or sg interface can be used by the user with a driver supporting either interface. A notable change for drivers is that the .write op can now be called multiple times. Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Acked-by: Alan Tull <atull@opensource.altera.com> Acked-by: Moritz Fischer <moritz.fischer@ettus.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-11-29fpga: Clarify how write_init works streaming modesJason Gunthorpe1-1/+4
This interface was designed for streaming, but write_init's buf argument has an unclear purpose. Define it to be the first bytes of the bitstream. Each driver gets to set how many bytes (at most) it wants to see. Short bitstreams will be passed through as-is, while long ones will be truncated. The intent is to allow drivers to peek at the header before the transfer actually starts. Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Acked-by: Alan Tull <atull@opensource.altera.com>
2016-11-10doc: fpga-mgr: add fpga image info to apiAlan Tull1-11/+21
This patch adds a minor change in the FPGA Manager API to hold information that is specific to an FPGA image file. This change is expected to bring little, if any, pain. An FPGA image file will have particulars that affect how the image is programmed to the FPGA. One example is that current 'flags' currently has one bit which shows whether the FPGA image was built for full reconfiguration or partial reconfiguration. Another example is timeout values for enabling or disabling the bridges in the FPGA. As the complexity of the FPGA design increases, the bridges in the FPGA may take longer times to enable or disable. This patch documents the change in the FPGA Manager API functions, replacing the 'u32 flag' parameter with a pointer to struct fpga_image_info. Signed-off-by: Alan Tull <atull@opensource.altera.com> Acked-by: Moritz Fischer <moritz.fischer@ettus.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-11-10fpga: add method to get fpga manager from deviceAlan Tull1-2/+4
The intent is to provide a non-DT method of getting ahold of a FPGA manager to do some FPGA programming. This patch refactors of_fpga_mgr_get() to reuse most of it while adding a new method fpga_mgr_get() for getting a pointer to a fpga manager struct, given the device. Signed-off-by: Alan Tull <atull@opensource.altera.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-07usage documentation for FPGA manager coreAlan Tull1-0/+171
Add a document on the new FPGA manager core. Signed-off-by: Alan Tull <atull@opensource.altera.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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