summaryrefslogtreecommitdiffstats
path: root/include/linux/fpga
Commit message (Collapse)AuthorAgeFilesLines
* fpga pr ip: Core driver support for Altera Partial Reconfiguration IP.Matthew Gerlach2017-04-081-0/+29
| | | | | | | | | | | Adding the core functions necessary for a fpga-mgr driver for the Altera Partial IP component. It is intended for these functions to be used by the various bus implementations like the platform bus or the PCIe bus. Signed-off-by: Matthew Gerlach <matthew.gerlach@linux.intel.com> Acked-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* fpga: add config complete timeoutAlan Tull2017-04-081-0/+3
| | | | | | | | Adding timeout for maximum allowed time for FPGA to go to operating mode after a FPGA region has been programmed. Signed-off-by: Alan Tull <atull@opensource.altera.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* fpga: Add flag to indicate bitstream needs decryptingMoritz Fischer2017-03-171-0/+1
| | | | | | | | | | | | | Add a flag that is passed to the write_init() callback, indicating that the bitstream is encrypted. The low-level driver will deal with the flag, or return an error, if encrypted bitstreams are not supported. Signed-off-by: Moritz Fischer <mdf@kernel.org> Acked-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Alan Tull <atull@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* fpga: Add scatterlist based programmingJason Gunthorpe2017-02-101-0/+5
| | | | | | | | | | | | | | | | | | | | | | 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>
* fpga: Clarify how write_init works streaming modesJason Gunthorpe2016-11-291-0/+2
| | | | | | | | | | | | | | 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>
* fpga: fpga-region: device tree control for FPGAAlan Tull2016-11-101-0/+2
| | | | | | | | FPGA Regions support programming FPGA under control of the Device Tree. Signed-off-by: Alan Tull <atull@opensource.altera.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* fpga: add fpga bridge frameworkAlan Tull2016-11-101-0/+60
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This framework adds API functions for enabling/ disabling FPGA bridges under kernel control. This allows the Linux kernel to disable FPGA bridges during FPGA reprogramming and to enable FPGA bridges when FPGA reprogramming is done. This framework is be manufacturer-agnostic, allowing it to be used in interfaces that use the FPGA Manager Framework to reprogram FPGA's. The functions are: * of_fpga_bridge_get * fpga_bridge_put Get/put an exclusive reference to a FPGA bridge. * fpga_bridge_enable * fpga_bridge_disable Enable/Disable traffic through a bridge. * fpga_bridge_register * fpga_bridge_unregister Register/unregister a device-specific low level FPGA Bridge driver. Get an exclusive reference to a bridge and add it to a list: * fpga_bridge_get_to_list To enable/disable/put a set of bridges that are on a list: * fpga_bridges_enable * fpga_bridges_disable * fpga_bridges_put Signed-off-by: Alan Tull <atull@opensource.altera.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* fpga-mgr: add fpga image information structAlan Tull2016-11-101-4/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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. The socfpga and zynq drivers are fixed up in this patch. 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 adds a new 'struct fpga_image_info', moves the current 'u32 flags' to it. Two other image-specific u32's are added for the bridge enable/disable timeouts. The FPGA Manager API functions are changed, replacing the 'u32 flag' parameter with a pointer to struct fpga_image_info. Subsequent patches fix the existing low level FPGA manager drivers. 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>
* fpga: add method to get fpga manager from deviceAlan Tull2016-11-101-0/+2
| | | | | | | | | | | | 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>
* add FPGA manager coreAlan Tull2015-10-071-0/+127
API to support programming FPGA's. The following functions are exported as GPL: * fpga_mgr_buf_load Load fpga from image in buffer * fpga_mgr_firmware_load Request firmware and load it to the FPGA. * fpga_mgr_register * fpga_mgr_unregister FPGA device drivers can be added by calling fpga_mgr_register() to register a set of fpga_manager_ops to do device specific stuff. * of_fpga_mgr_get * fpga_mgr_put Get/put a reference to a fpga manager. The following sysfs files are created: * /sys/class/fpga_manager/<fpga>/name Name of low level driver. * /sys/class/fpga_manager/<fpga>/state State of fpga manager Signed-off-by: Alan Tull <atull@opensource.altera.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
OpenPOWER on IntegriCloud