linux.git/drivers/fpga/dfl.h, branch for-next

fpga: dfl: remove unused function is_dfl_feature_present()

2024-04-23T07:36:33+00:00

The function is_dfl_feature_present() was added but never used.

Fixes: 5b57d02a2f94 ("fpga: dfl: add feature device infrastructure")
Signed-off-by: Peter Colberg 
Reviewed-by: Matthew Gerlach 
Acked-by: Xu Yilun 
Link: https://lore.kernel.org/r/20240415235743.3045-1-peter.colberg@intel.com
Signed-off-by: Xu Yilun

Merge tag 'char-misc-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2023-02-24T20:47:33+00:00

Pull char/misc and other driver subsystem updates from Greg KH:
 "Here is the large set of driver changes for char/misc drivers and
  other smaller driver subsystems that flow through this git tree.

  Included in here are:

   - New IIO drivers and features and improvments in that subsystem

   - New hwtracing drivers and additions to that subsystem

   - lots of interconnect changes and new drivers as that subsystem
     seems under very active development recently. This required also
     merging in the icc subsystem changes through this tree.

   - FPGA driver updates

   - counter subsystem and driver updates

   - MHI driver updates

   - nvmem driver updates

   - documentation updates

   - Other smaller driver updates and fixes, full details in the
     shortlog

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'char-misc-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (223 commits)
  scripts/tags.sh: fix incompatibility with PCRE2
  firmware: coreboot: Remove GOOGLE_COREBOOT_TABLE_ACPI/OF Kconfig entries
  mei: lower the log level for non-fatal failed messages
  mei: bus: disallow driver match while dismantling device
  misc: vmw_balloon: fix memory leak with using debugfs_lookup()
  nvmem: stm32: fix OPTEE dependency
  dt-bindings: nvmem: qfprom: add IPQ8074 compatible
  nvmem: qcom-spmi-sdam: register at device init time
  nvmem: rave-sp-eeprm: fix kernel-doc bad line warning
  nvmem: stm32: detect bsec pta presence for STM32MP15x
  nvmem: stm32: add OP-TEE support for STM32MP13x
  nvmem: core: use nvmem_add_one_cell() in nvmem_add_cells_from_of()
  nvmem: core: add nvmem_add_one_cell()
  nvmem: core: drop the removal of the cells in nvmem_add_cells()
  nvmem: core: move struct nvmem_cell_info to nvmem-provider.h
  nvmem: core: add an index parameter to the cell
  of: property: add #nvmem-cell-cells property
  of: property: make #.*-cells optional for simple props
  of: base: add of_parse_phandle_with_optional_args()
  net: add helper eth_addr_add()
  ...

fpga: dfl: more kernel-doc corrections

2023-01-28T15:33:43+00:00

Fix more kernel-doc warnings in drivers/fpga/:

$ ./scripts/kernel-doc -none drivers/fpga/*
drivers/fpga/dfl-afu.h:61: warning: expecting prototype for struct fpga_afu_dma_region. Prototype was for struct dfl_afu_dma_region instead
drivers/fpga/dfl-afu-region.c:52: warning: Function parameter or member 'pdata' not described in 'afu_mmio_region_add'
drivers/fpga/dfl-fme-perf.c:161: warning: Function parameter or member 'node' not described in 'fme_perf_priv'
drivers/fpga/dfl-fme-pr.h:70: warning: expecting prototype for struct dfl_fme_bridge_pdata. Prototype was for struct dfl_fme_br_pdata instead
drivers/fpga/dfl.h:256: warning: Function parameter or member 'revision' not described in 'dfl_feature'

Signed-off-by: Xu Yilun 
Reviewed-by: Randy Dunlap 
Link: https://lore.kernel.org/r/20230114155444.794712-1-yilun.xu@intel.com

fpga: dfl: add basic support for DFHv1

2023-01-19T15:07:40+00:00

Version 1 of the Device Feature Header (DFH) definition adds
functionality to the Device Feature List (DFL) bus.

A DFHv1 header may have one or more parameter blocks that
further describes the HW to SW. Add support to the DFL bus
to parse the MSI-X parameter.

The location of a feature's register set is explicitly
described in DFHv1 and can be relative to the base of the DFHv1
or an absolute address. Parse the location and pass the information
to DFL driver.

Signed-off-by: Matthew Gerlach 
Reviewed-by: Ilpo Järvinen 
Link: https://lore.kernel.org/r/20230115151447.1353428-4-matthew.gerlach@linux.intel.com
Signed-off-by: Greg Kroah-Hartman

fpga: dfl: Add DFHv1 Register Definitions

2023-01-19T15:07:40+00:00

This patch adds the definitions for DFHv1 header and related register
bitfields.

Signed-off-by: Basheer Ahmed Muddebihal 
Co-developed-by: Matthew Gerlach 
Signed-off-by: Matthew Gerlach 
Reviewed-by: Ilpo Järvinen 
Reviewed-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20230115151447.1353428-3-matthew.gerlach@linux.intel.com
Signed-off-by: Greg Kroah-Hartman

fpga: dfl: Allow Port to be linked to FME's DFL

2022-05-10T08:05:38+00:00

Currently we use PORTn_OFFSET to locate PORT DFLs, and PORT DFLs are not
connected FME DFL. But for some cases (e.g. Intel Open FPGA Stack device),
PORT DFLs are connected to FME DFL directly, so we don't need to search
PORT DFLs via PORTn_OFFSET again. If BAR value of PORTn_OFFSET is 0x7
(FME_PORT_OFST_BAR_SKIP) then driver will skip searching the DFL for that
port. If BAR value is invalid, return -EINVAL.

Signed-off-by: Matthew Gerlach 
Signed-off-by: Tianfei Zhang 
Acked-by: Wu Hao 
Link: https://lore.kernel.org/r/20220505100617.703672-1-tianfei.zhang@intel.com
Signed-off-by: Xu Yilun

fpga: dfl: expose feature revision from struct dfl_device

2021-07-29T19:54:10+00:00

DFL device drivers have a common need for checking feature revision
information from the DFL header, as well as other common DFL information
like the already exposed feature id and type.

This patch exposes the feature revision information directly via the DFL
device data structure.

Since the DFL core code has already read the DFL header, this this patch
saves additional mmio reads from DFL device drivers too.

Acked-by: Wu Hao 
Acked-by: Matthew Gerlach 
Signed-off-by: Martin Hundebøll 
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: dfl: move dfl bus related APIs to include/linux/dfl.h

2021-01-07T14:21:27+00:00

Now the dfl drivers could be made as independent modules and put in
different folders according to their functionalities. In order for
scattered dfl device drivers to include dfl bus APIs, move the
dfl bus APIs to a new header file in the public folder.

[mdf@kernel.org: Fixed up header guards to match filename]

Reviewed-by: Tom Rix 
Acked-by: Wu Hao 
Signed-off-by: Xu Yilun 
Signed-off-by: Moritz Fischer 
Link: https://lore.kernel.org/r/20210107043714.991646-7-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman

fpga: dfl: move dfl_device_id to mod_devicetable.h

2021-01-07T14:21:27+00:00

In order to support MODULE_DEVICE_TABLE() for dfl device driver, this
patch moves struct dfl_device_id to mod_devicetable.h

Some brief description for DFL (Device Feature List) is added to make
the DFL known to the whole kernel.

Reviewed-by: Tom Rix 
Acked-by: Wu Hao 
Signed-off-by: Xu Yilun 
Signed-off-by: Wu Hao 
Signed-off-by: Matthew Gerlach 
Signed-off-by: Russ Weight 
Signed-off-by: Moritz Fischer 
Link: https://lore.kernel.org/r/20210107043714.991646-5-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman