linux-toradex.git/include/linux/fpga, branch v6.4-rc1

fpga: fpga-mgr: support bitstream offset in image buffer

2022-06-24T04:11:18+00:00

At the moment FPGA manager core loads to the device entire image
provided to fpga_mgr_load(). But it is not always whole FPGA image
buffer meant to be written to the device. In particular, .dat formatted
image for Microchip MPF contains meta info in the header that is not
meant to be written to the device. This is issue for those low level
drivers that loads data to the device with write() fpga_manager_ops
callback, since write() can be called in iterator over scatter-gather
table, not only linear image buffer. On the other hand, write_sg()
callback is provided with whole image in scatter-gather form and can
decide itself which part should be sent to the device.

Add header_size and data_size to the fpga_image_info struct, add
skip_header to the fpga_manager_ops struct and adjust fpga_mgr_write()
callers with respect to them.

  * info->header_size indicates part at the beginning of image buffer
    that contains some meta info. It is optional and can be 0,
    initialized with mops->initial_header_size.

  * mops->skip_header tells fpga-mgr core whether write should start
    from the beginning of image buffer or at the offset of header_size.

  * info->data_size is the size of bitstream data that is meant to be
    written to the device. It is also optional and can be 0, which
    means bitstream data is up to the end of image buffer.

Also add parse_header() callback to fpga_manager_ops, which purpose is
to set info->header_size and info->data_size. At least
initial_header_size bytes of image buffer will be passed into
parse_header() first time. If it is not enough, parse_header() should
set desired size into info->header_size and return -EAGAIN, then it will
be called again with greater part of image buffer on the input.

Suggested-by: Xu Yilun 
Signed-off-by: Ivan Bornyakov 
Acked-by: Xu Yilun 
Link: https://lore.kernel.org/r/20220623163248.3672-2-i.bornyakov@metrotek.ru
Signed-off-by: Xu Yilun

fpga: fix for coding style issues

2022-05-10T08:03:52+00:00

fixes the below checks reported by checkpatch.pl:
- Lines should not end with a '('
- Alignment should match open parenthesis

Signed-off-by: Nava kishore Manne 
Link: https://lore.kernel.org/r/20220423170235.2115479-3-nava.manne@xilinx.com
Signed-off-by: Xu Yilun

fpga: region: Use standard dev_release for class driver

2021-11-28T22:02:41+00:00

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

fpga: bridge: Use standard dev_release for class driver

2021-11-28T22:02:13+00:00

The FPGA bridge 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() function.

Signed-off-by: Russ Weight 
Reviewed-by: Xu Yilun 
Acked-by: Xu Yilun 
Signed-off-by: Moritz Fischer

fpga: mgr: Use standard dev_release for class driver

2021-11-28T21:59:13+00:00

The FPGA manager 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 for the freeing of the class data structure
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.

The devm_fpga_mgr_register() function is retained, and the
devm_fpga_mgr_register_full() function is added.

Signed-off-by: Russ Weight 
Reviewed-by: Xu Yilun 
Acked-by: Xu Yilun 
Signed-off-by: Moritz Fischer

fpga: fix spelling mistakes

2021-07-22T02:54:21+00:00

Run the fpga subsystem through aspell.

Signed-off-by: Tom Rix 
Reviewed-by: Fernando Pacheco 
Signed-off-by: Moritz Fischer

fpga: altera-pr-ip: Remove function alt_pr_unregister

2021-06-15T07:27:35+00:00

Remove the alt_pr_unregister() function; it is no longer used.

Signed-off-by: Russ Weight 
Reviewed-by: Xu Yilun 
Signed-off-by: Moritz Fischer 
Link: https://lore.kernel.org/r/20210614170909.232415-2-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman

fpga-mgr: change FPGA indirect article to an

2021-06-09T12:51:25+00:00

Change use of 'a fpga' to 'an fpga'

Signed-off-by: Tom Rix 
Link: https://lore.kernel.org/r/20210608212350.3029742-9-trix@redhat.com
Signed-off-by: Greg Kroah-Hartman

fpga: bridge: change FPGA indirect article to an

2021-06-09T12:51:25+00:00

Change use of 'a fpga' to 'an fpga'

Signed-off-by: Tom Rix 
Link: https://lore.kernel.org/r/20210608212350.3029742-8-trix@redhat.com
Signed-off-by: Greg Kroah-Hartman

fpga: fpga-mgr: Add devm_fpga_mgr_register() API

2020-12-01T17:49:32+00:00

Add a devm_fpga_mgr_register() API that can be used to register a FPGA
Manager that was created using devm_fpga_mgr_create().

Introduce a struct fpga_mgr_devres that makes the devres
allocation a little bit more readable and gets reused for
devm_fpga_mgr_create() devm_fpga_mgr_register().

Reviewed-by: Tom Rix 
Signed-off-by: Moritz Fischer 
Link: https://lore.kernel.org/r/20201115195127.284487-2-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman