| Message ID | 20210624205355.517687-1-russell.h.weight@intel.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | fpga: Use standard class dev_release function | expand |
I think this version may be ready to go. Please take a minute to review and either provide a review tag or let me know of any issues you see. - Russ On 6/24/21 1:53 PM, Russ Weight wrote: > The FPGA framework has a convention of using managed resource functions > to allow parent drivers to manage the data structures allocated by the > class drivers. They use an empty *_dev_release() function to satisfy the > class driver. > > This is inconsistent with linux driver model. > > These changes remove the managed resource functions and populate the class > dev_release callback functions. They also merge the create() and register() > functions into a single register() or register_simple() function for each of > the fpga-mgr, fpga-region, and fpga-bridge class drivers. > > The new *register() functions accept an info data structure to provide > flexibility in passing optional parameters. The *register_simple() > functions support the legacy parameter list for users that don't require > the use of optional parameters. > > For more context, refer to this email thread: > > https://marc.info/?l=linux-fpga&m=162127412218557&w=2 > > I turned on the configs assocated with each of the modified files, but I > must have been missing some dependencies, because not all of them compiled. > I did a run-time test specifically with the dfl-fme infrastructure. This > would have exercised the region, bridge, and fpga-mgr frameworks. > > Changelog v7 -> v8: > - Added reviewed-by tags. > - Updated Documentation/driver-api/fpga/ files: fpga-mgr.rst, > fpga-bridge.rst, and fpga-region.rst. > > Changelog v6 -> v7: > - Update the commit messages to describe the new parameters for the > *register() functions and to mention the *register_simple() functions. > - Fix function prototypes in header file to rename dev to parent. > - Make use of the PTR_ERR_OR_ZERO() macro when possible. > - Some cleanup of comments. > - Update function defintions/prototypes to apply const to the new info > parameter. > - Verify that info->br_ops is non-null in the fpga_bridge_register() > function. > - Verify a non-null info pointer in the fpga_region_register() function. > > Changelog v5 -> v6: > - Moved FPGA manager/bridge/region optional parameters out of the ops > structure and back into the FPGA class driver structure. > - Changed fpga_*_register() function parameters to accept an info data > structure to provide flexibility in passing optional parameters. > - Added fpga_*_register_simple() functions to support current parameters > for users that don't require use of optional parameters. > > Changelog v4 -> v5: > - Rebased on top of recently accepted patches. > - Removed compat_id from the fpga_mgr_register() parameter list > and added it to the fpga_manager_ops structure. This also required > dynamically allocating the dfl-fme-ops structure in order to add > the appropriate compat_id. > - Created the fpga_region_ops data structure which is optionally passed > to fpga_region_register(). compat_id, the get_bridges() pointer, and > the priv pointer are included in the fpga_region_ops structure. > > Changelog v3 -> v4: > - Added the compat_id parameter to fpga_mgr_register() and > devm_fpga_mgr_register() to ensure that the compat_id is set before > the device_register() call. > - Added the compat_id parameter to fpga_region_register() to ensure > that the compat_id is set before the device_register() call. > - Modified the dfl_fpga_feature_devs_enumerate() function to restore > the fpga_region_register() call to the correct location. > > Changelog v2 -> v3: > - Cleaned up comment headers for fpga_mgr_register(), fpga_bridge_register(), > and fpga_region_register(). > - Fixed error return on ida_simple_get() failure for fpga_mgr_register(), > fpga_bridge_register(), and fpga_region_register(). > - Fixed error return value for fpga_bridge_register(): ERR_PTR(ret) instead > of NULL. > > Changelog v1 -> v2: > - Restored devm_fpga_mgr_register() functionality to the fpga-mgr > class driver, adapted for the combined create/register functionality. > - All previous callers of devm_fpga_mgr_register() will continue to call > devm_fpga_mgr_register(). > - replaced unnecessary ternary operators in return statements with > standard if conditions. > > Russ Weight (3): > fpga: mgr: Use standard dev_release for class driver > fpga: bridge: Use standard dev_release for class driver > fpga: region: Use standard dev_release for class driver > > Documentation/driver-api/fpga/fpga-bridge.rst | 8 +- > Documentation/driver-api/fpga/fpga-mgr.rst | 39 ++-- > Documentation/driver-api/fpga/fpga-region.rst | 8 +- > drivers/fpga/altera-cvp.c | 12 +- > drivers/fpga/altera-fpga2sdram.c | 12 +- > drivers/fpga/altera-freeze-bridge.c | 10 +- > drivers/fpga/altera-hps2fpga.c | 12 +- > drivers/fpga/altera-pr-ip-core.c | 8 +- > drivers/fpga/altera-ps-spi.c | 9 +- > drivers/fpga/dfl-fme-br.c | 10 +- > drivers/fpga/dfl-fme-mgr.c | 22 +- > drivers/fpga/dfl-fme-region.c | 17 +- > drivers/fpga/dfl.c | 12 +- > drivers/fpga/fpga-bridge.c | 138 ++++------- > drivers/fpga/fpga-mgr.c | 214 ++++++++---------- > drivers/fpga/fpga-region.c | 121 ++++------ > drivers/fpga/ice40-spi.c | 9 +- > drivers/fpga/machxo2-spi.c | 10 +- > drivers/fpga/of-fpga-region.c | 11 +- > drivers/fpga/socfpga-a10.c | 16 +- > drivers/fpga/socfpga.c | 9 +- > drivers/fpga/stratix10-soc.c | 16 +- > drivers/fpga/ts73xx-fpga.c | 9 +- > drivers/fpga/xilinx-pr-decoupler.c | 17 +- > drivers/fpga/xilinx-spi.c | 11 +- > drivers/fpga/zynq-fpga.c | 16 +- > drivers/fpga/zynqmp-fpga.c | 9 +- > include/linux/fpga/fpga-bridge.h | 33 ++- > include/linux/fpga/fpga-mgr.h | 62 +++-- > include/linux/fpga/fpga-region.h | 36 ++- > 30 files changed, 396 insertions(+), 520 deletions(-) >
The FPGA framework has a convention of using managed resource functions to allow parent drivers to manage the data structures allocated by the class drivers. They use an empty *_dev_release() function to satisfy the class driver. This is inconsistent with linux driver model. These changes remove the managed resource functions and populate the class dev_release callback functions. They also merge the create() and register() functions into a single register() or register_simple() function for each of the fpga-mgr, fpga-region, and fpga-bridge class drivers. The new *register() functions accept an info data structure to provide flexibility in passing optional parameters. The *register_simple() functions support the legacy parameter list for users that don't require the use of optional parameters. For more context, refer to this email thread: https://marc.info/?l=linux-fpga&m=162127412218557&w=2 I turned on the configs assocated with each of the modified files, but I must have been missing some dependencies, because not all of them compiled. I did a run-time test specifically with the dfl-fme infrastructure. This would have exercised the region, bridge, and fpga-mgr frameworks. Changelog v7 -> v8: - Added reviewed-by tags. - Updated Documentation/driver-api/fpga/ files: fpga-mgr.rst, fpga-bridge.rst, and fpga-region.rst. Changelog v6 -> v7: - Update the commit messages to describe the new parameters for the *register() functions and to mention the *register_simple() functions. - Fix function prototypes in header file to rename dev to parent. - Make use of the PTR_ERR_OR_ZERO() macro when possible. - Some cleanup of comments. - Update function defintions/prototypes to apply const to the new info parameter. - Verify that info->br_ops is non-null in the fpga_bridge_register() function. - Verify a non-null info pointer in the fpga_region_register() function. Changelog v5 -> v6: - Moved FPGA manager/bridge/region optional parameters out of the ops structure and back into the FPGA class driver structure. - Changed fpga_*_register() function parameters to accept an info data structure to provide flexibility in passing optional parameters. - Added fpga_*_register_simple() functions to support current parameters for users that don't require use of optional parameters. Changelog v4 -> v5: - Rebased on top of recently accepted patches. - Removed compat_id from the fpga_mgr_register() parameter list and added it to the fpga_manager_ops structure. This also required dynamically allocating the dfl-fme-ops structure in order to add the appropriate compat_id. - Created the fpga_region_ops data structure which is optionally passed to fpga_region_register(). compat_id, the get_bridges() pointer, and the priv pointer are included in the fpga_region_ops structure. Changelog v3 -> v4: - Added the compat_id parameter to fpga_mgr_register() and devm_fpga_mgr_register() to ensure that the compat_id is set before the device_register() call. - Added the compat_id parameter to fpga_region_register() to ensure that the compat_id is set before the device_register() call. - Modified the dfl_fpga_feature_devs_enumerate() function to restore the fpga_region_register() call to the correct location. Changelog v2 -> v3: - Cleaned up comment headers for fpga_mgr_register(), fpga_bridge_register(), and fpga_region_register(). - Fixed error return on ida_simple_get() failure for fpga_mgr_register(), fpga_bridge_register(), and fpga_region_register(). - Fixed error return value for fpga_bridge_register(): ERR_PTR(ret) instead of NULL. Changelog v1 -> v2: - Restored devm_fpga_mgr_register() functionality to the fpga-mgr class driver, adapted for the combined create/register functionality. - All previous callers of devm_fpga_mgr_register() will continue to call devm_fpga_mgr_register(). - replaced unnecessary ternary operators in return statements with standard if conditions. Russ Weight (3): fpga: mgr: Use standard dev_release for class driver fpga: bridge: Use standard dev_release for class driver fpga: region: Use standard dev_release for class driver Documentation/driver-api/fpga/fpga-bridge.rst | 8 +- Documentation/driver-api/fpga/fpga-mgr.rst | 39 ++-- Documentation/driver-api/fpga/fpga-region.rst | 8 +- drivers/fpga/altera-cvp.c | 12 +- drivers/fpga/altera-fpga2sdram.c | 12 +- drivers/fpga/altera-freeze-bridge.c | 10 +- drivers/fpga/altera-hps2fpga.c | 12 +- drivers/fpga/altera-pr-ip-core.c | 8 +- drivers/fpga/altera-ps-spi.c | 9 +- drivers/fpga/dfl-fme-br.c | 10 +- drivers/fpga/dfl-fme-mgr.c | 22 +- drivers/fpga/dfl-fme-region.c | 17 +- drivers/fpga/dfl.c | 12 +- drivers/fpga/fpga-bridge.c | 138 ++++------- drivers/fpga/fpga-mgr.c | 214 ++++++++---------- drivers/fpga/fpga-region.c | 121 ++++------ drivers/fpga/ice40-spi.c | 9 +- drivers/fpga/machxo2-spi.c | 10 +- drivers/fpga/of-fpga-region.c | 11 +- drivers/fpga/socfpga-a10.c | 16 +- drivers/fpga/socfpga.c | 9 +- drivers/fpga/stratix10-soc.c | 16 +- drivers/fpga/ts73xx-fpga.c | 9 +- drivers/fpga/xilinx-pr-decoupler.c | 17 +- drivers/fpga/xilinx-spi.c | 11 +- drivers/fpga/zynq-fpga.c | 16 +- drivers/fpga/zynqmp-fpga.c | 9 +- include/linux/fpga/fpga-bridge.h | 33 ++- include/linux/fpga/fpga-mgr.h | 62 +++-- include/linux/fpga/fpga-region.h | 36 ++- 30 files changed, 396 insertions(+), 520 deletions(-)