user/sven/linux.git/include/linux/fpga, branch v5.10.230

fpga: region: add owner module and take its refcount

2024-06-16T11:32:19Z

[ Upstream commit b7c0e1ecee403a43abc89eb3e75672b01ff2ece9 ] The current implementation of the fpga region assumes that the low-level module registers a driver for the parent device and uses its owner pointer to take the module's refcount. This approach is problematic since it can lead to a null pointer dereference while attempting to get the region during programming if the parent device does not have a driver. To address this problem, add a module owner pointer to the fpga_region struct and use it to take the module's refcount. Modify the functions for registering a region to take an additional owner module parameter and rename them to avoid conflicts. Use the old function names for helper macros that automatically set the module that registers the region as the owner. This ensures compatibility with existing low-level control modules and reduces the chances of registering a region without setting the owner. Also, update the documentation to keep it consistent with the new interface for registering an fpga region. Fixes: 0fa20cdfcc1f ("fpga: fpga-region: device tree control for FPGA") Suggested-by: Greg Kroah-Hartman Suggested-by: Xu Yilun Reviewed-by: Russ Weight Signed-off-by: Marco Pagani Acked-by: Xu Yilun Link: https://lore.kernel.org/r/20240419083601.77403-1-marpagan@redhat.com Signed-off-by: Xu Yilun Signed-off-by: Sasha Levin

fpga: region: Use standard dev_release for class driver

2024-06-16T11:32:19Z

[ Upstream commit 8886a579744fbfa53e69aa453ed10ae3b1f9abac ] The FPGA region class driver data structure is being treated as a managed resource instead of using the standard dev_release call-back function to release the class data structure. This change removes the managed resource code and combines the create() and register() functions into a single register() or register_full() function. The register_full() function accepts an info data structure to provide flexibility in passing optional parameters. The register() function supports the current parameter list for users that don't require the use of optional parameters. Signed-off-by: Russ Weight Reviewed-by: Xu Yilun Acked-by: Xu Yilun Signed-off-by: Moritz Fischer Stable-dep-of: b7c0e1ecee40 ("fpga: region: add owner module and take its refcount") Signed-off-by: Sasha Levin

include: fpga: adi-axi-common.h: add version helper macros

2020-04-19T15:56:21Z

The format for all ADI AXI IP cores is the same. i.e. 'major.minor.patch'. This patch adds the helper macros to be re-used in ADI AXI drivers. Acked-by: Moritz Fischer Signed-off-by: Alexandru Ardelean Signed-off-by: Jonathan Cameron

include: fpga: adi-axi-common.h: fixup whitespace tab -> space

2020-04-19T15:56:21Z

The initial version use a tab between '#define' & 'ADI_AXI_REG_VERSION'. This changes it to space. The change is purely cosmetic. Acked-by: Moritz Fischer Signed-off-by: Alexandru Ardelean Signed-off-by: Jonathan Cameron

fpga: altera-pr-ip: Make alt_pr_unregister function void

2019-07-24T21:11:52Z

Make alt_pr_unregister function void, since it always returns 0, and nothing would act on the value anyways. Signed-off-by: Moritz Fischer

include: fpga: adi-axi-common.h: add common regs & defs header

2019-05-27T07:06:08Z

The AXI HDL cores provided for Analog Devices reference designs all share some common base registers (e.g. version register at address 0x00). To reduce duplication for this, a common header is added to define these registers as well as bitfields & macros to work with these registers. Signed-off-by: Alexandru Ardelean Signed-off-by: Vinod Koul

fpga: add devm_fpga_region_create

2018-10-16T09:13:50Z

Add devm_fpga_region_create() which is the managed version of fpga_region_create(). Change current region drivers to use devm_fpga_region_create(). Signed-off-by: Alan Tull Suggested-by: Federico Vaga Acked-by: Moritz Fischer Signed-off-by: Greg Kroah-Hartman

fpga: bridge: add devm_fpga_bridge_create

2018-10-16T09:13:50Z

Add devm_fpga_bridge_create() which is the managed version of fpga_bridge_create(). Change current bridge drivers to use devm_fpga_bridge_create(). Signed-off-by: Alan Tull Suggested-by: Federico Vaga Acked-by: Moritz Fischer Signed-off-by: Greg Kroah-Hartman

fpga: mgr: add devm_fpga_mgr_create

2018-10-16T09:13:50Z

Add devm_fpga_mgr_create() which is the managed version of fpga_mgr_create(). Change current FPGA manager drivers to use devm_fpga_mgr_create() Signed-off-by: Alan Tull Suggested-by: Federico Vaga Acked-by: Moritz Fischer Signed-off-by: Greg Kroah-Hartman

docs: fpga: document fpga manager flags

2018-09-30T15:49:55Z

Add flags #defines to kerneldoc documentation in a useful place. Signed-off-by: Alan Tull Acked-by: Moritz Fischer Signed-off-by: Greg Kroah-Hartman