On Sat, Jun 11, 2022 at 12:05:27PM +0300, Ivan Bornyakov wrote: > Add support to the FPGA manager for programming Microchip Polarfire > FPGAs over slave SPI interface with .dat formatted bitsream image. Hi Ivan: I've found some warnings/checks when running "checkpatch --strict", please help fix them. One of them is the krealloc issue. Some reference for you: https://lkml.org/lkml/2013/3/14/558 BTW: You could check Documentation/process/submit-checklist.rst for more guildlines. I think at least checkpatch, make htmldocs or make pdfdocs, sparse is the basic checks for you. Thanks, Yilun > > Changelog: > v1 -> v2: fix printk formating > v2 -> v3: > * replace "microsemi" with "microchip" > * replace prefix "microsemi_fpga_" with "mpf_" > * more sensible .compatible and .name strings > * remove unused defines STATUS_SPI_VIOLATION and STATUS_SPI_ERROR > v3 -> v4: fix unused variable warning > Put 'mpf_of_ids' definition under conditional compilation, so it > would not hang unused if CONFIG_OF is not enabled. > v4 -> v5: > * prefix defines with MPF_ > * mdelay() -> usleep_range() > * formatting fixes > * add DT bindings doc > * rework fpga_manager_ops.write() to fpga_manager_ops.write_sg() > We can't parse image header in write_init() because image header > size is not known beforehand. Thus parsing need to be done in > fpga_manager_ops.write() callback, but fpga_manager_ops.write() > also need to be reenterable. On the other hand, > fpga_manager_ops.write_sg() is called once. Thus, rework usage of > write() callback to write_sg(). > v5 -> v6: fix patch applying > I forgot to clean up unrelated local changes which lead to error on > patch 0001-fpga-microchip-spi-add-Microchip-MPF-FPGA-manager.patch > applying on vanilla kernel. > v6 -> v7: fix binding doc to pass dt_binding_check > v7 -> v8: another fix for dt_binding_check warning > v8 -> v9: > * add another patch to support bitstream offset in FPGA image buffer > * rework fpga_manager_ops.write_sg() back to fpga_manager_ops.write() > * move image header parsing from write() to write_init() > v9 -> v10: > * add parse_header() callback to fpga_manager_ops > * adjust fpga_mgr_write_init[_buf|_sg]() for parse_header() usage > * implement parse_header() in microchip-spi driver > v10 -> v11: include missing unaligned.h to microchip-spi > fix error: implicit declaration of function 'get_unaligned_le[16|32]' > v11 -> v12: > * microchip-spi: double read hw status, ignore first read, because it > can be unreliable. > * microchip-spi: remove sleep between status readings in > poll_status_not_busy() to save a few seconds. Status is polled on > every 16 byte writes - that is quite often, therefore > usleep_range() accumulate to a considerable number of seconds. > v12 -> v13: > * fpga-mgr: separate fpga_mgr_parse_header_buf() from > fpga_mgr_write_init_buf() > * fpga-mgr: introduce FPGA_MGR_STATE_PARSE_HEADER and > FPGA_MGR_STATE_PARSE_HEADER_ERR fpga_mgr_states > * fpga-mgr: rename fpga_mgr_write_init_sg() to fpga_mgr_prepare_sg() > and rework with respect to a new fpga_mgr_parse_header_buf() > * fpga-mgr: rework write accounting in fpga_mgr_buf_load_sg() for > better clarity > * microchip-spi: rename MPF_STATUS_POLL_TIMEOUT to > MPF_STATUS_POLL_RETRIES > * microchip-spi: add comment about status reading quirk to > mpf_read_status() > * microchip-spi: rename poll_status_not_busy() to mpf_poll_status() > and add comment. > * microchip-spi: make if statement in mpf_poll_status() easier to > read. > v13 -> v14: > * fpga-mgr: improvements from Xu Yilun in > - fpga_mgr_parse_header_buf() > - fpga_mgr_write_init_buf() > - fpga_mgr_prepare_sg() > - fpga_mgr_buf_load_sg() > * fpga-mgr: add check for -EAGAIN from fpga_mgr_parse_header_buf() > when called from fpga_mgr_buf_load_mapped() > * microchip-spi: remove excessive cs_change from second spi_transfer > in mpf_read_status() > * microchip-spi: change type of components_size_start, > bitstream_start, i from size_t to u32 in mpf_ops_parse_header() > v14 -> v15: eliminate memcpy() in mpf_ops_write() > Eliminate excessive memcpy() in mpf_ops_write() by using > spi_sync_transfer() instead of spi_write(). > v15 -> v16: > * microchip-spi: change back components_size_start and > bitstream_start variables types to size_t, i - to u16 in > mpf_ops_parse_header() > * fpga-mgr: rename fpga_parse_header_buf() to > fpga_parse_header_mapped(). It serves only mapped FPGA image now, > adjust it accordingly. > * fpga-mgr: separate fpga_mgr_parse_header_sg_first() and > fpga_mgr_parse_header_sg() from fpga_mgr_prepare_sg() > v16 -> v17: > * fpga-mgr: return size of allocated header from > fpga_mgr_parse_header_sg(), add `char **ret_buf` to function args > to save pointer to allocated header. This allow us to call > fpga_mgr_write_init_buf() with exact size of allocated header. > * document parse_header() callback in fpga-mgr.rst > v17 -> v18: > * fpga-mgr: change back fpga_mgr_parse_header_sg() to return > allocated buffer but set buffer size into output parameter > * fpga-mgr: check returned pointer from krealloc for ZERO_OR_NULL_PTR > in fpga_mgr_paese_header_sg() as krealloc may return ZERO_SIZE_PTR. > * fpga-mgr: in fpga_mgr_prepare_sg() return fpga_mgr_write_init() on > fast path only when both initial_header_size and parse_header() are > not defined. > * docs: fpga-mgr: a few rewords from Xu Yilun > > Ivan Bornyakov (4): > fpga: fpga-mgr: support bitstream offset in image buffer > docs: fpga: mgr: document parse_header() callback > fpga: microchip-spi: add Microchip MPF FPGA manager > dt-bindings: fpga: add binding doc for microchip-spi fpga mgr > > .../fpga/microchip,mpf-spi-fpga-mgr.yaml | 44 ++ > Documentation/driver-api/fpga/fpga-mgr.rst | 31 +- > drivers/fpga/Kconfig | 8 + > drivers/fpga/Makefile | 1 + > drivers/fpga/fpga-mgr.c | 235 +++++++++-- > drivers/fpga/microchip-spi.c | 393 ++++++++++++++++++ > include/linux/fpga/fpga-mgr.h | 17 +- > 7 files changed, 693 insertions(+), 36 deletions(-) > create mode 100644 Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml > create mode 100644 drivers/fpga/microchip-spi.c > > -- > 2.35.1 >
