Add support to the FPGA manager for programming Microchip Polarfire
FPGAs over slave SPI interface with .dat formatted bitsream image.
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.
Ivan Bornyakov (3):
fpga: fpga-mgr: support bitstream offset in image buffer
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 +++
drivers/fpga/Kconfig | 9 +
drivers/fpga/Makefile | 1 +
drivers/fpga/fpga-mgr.c | 150 +++++--
drivers/fpga/microchip-spi.c | 371 ++++++++++++++++++
include/linux/fpga/fpga-mgr.h | 13 +-
6 files changed, 552 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
On Fri, May 13, 2022 at 07:27:52PM +0300, Ivan Bornyakov wrote:
> Add support to the FPGA manager for programming Microchip Polarfire
> FPGAs over slave SPI interface with .dat formatted bitsream image.
>
> 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.
>
> Ivan Bornyakov (3):
> fpga: fpga-mgr: support bitstream offset in image buffer
> 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 +++
> drivers/fpga/Kconfig | 9 +
> drivers/fpga/Makefile | 1 +
> drivers/fpga/fpga-mgr.c | 150 +++++--
> drivers/fpga/microchip-spi.c | 371 ++++++++++++++++++
> include/linux/fpga/fpga-mgr.h | 13 +-
> 6 files changed, 552 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
>
Friendly ping.