linux-kernel - Re: [RFC v2] fpga: dfl: RFC PCI config

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Date:   Wed, 1 Jul 2020 13:29:38 +0800
From:   Xu Yilun <yilun.xu@...el.com>
To:     trix@...hat.com
Cc:     hao.wu@...el.com, mdf@...nel.org, corbet@....net,
        linux-fpga@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC v2] fpga: dfl: RFC PCI config

On Tue, Jun 30, 2020 at 11:49:50AM -0700, trix@...hat.com wrote:
> From: Tom Rix <trix@...hat.com>
> 
> Create some top level configs the map to dfl pci cards.
> 
> Autoselect the parts of fpga that are needed to run these cards
> as well as the defining the other subsystem dependencies.
> 
> Signed-off-by: Tom Rix <trix@...hat.com>
> ---
>  v1 change subsystem selects to depends
> 
>  Documentation/fpga/dfl.rst | 30 ++++++++++++++++++++++++++++++
>  drivers/fpga/Kconfig       | 27 +++++++++++++++++++++++++++
>  2 files changed, 57 insertions(+)
> 
> diff --git a/Documentation/fpga/dfl.rst b/Documentation/fpga/dfl.rst
> index d7648d7c7eee..c1ae6b539f08 100644
> --- a/Documentation/fpga/dfl.rst
> +++ b/Documentation/fpga/dfl.rst
> @@ -500,6 +500,36 @@ Developer only needs to provide a sub feature driver with matched feature id.
>  FME Partial Reconfiguration Sub Feature driver (see drivers/fpga/dfl-fme-pr.c)
>  could be a reference.
>  
> +Kernel configuration
> +====================
> +
> +While it is possible to manually setup a configuration to match your device,
> +there are some top level configurations that collect configurations for
> +some reference PCI cards.  Below describes these configuration as well as
> +what other kernel configs are needed for proper configuration.
> +
> +FPGA_DFL_PAC10
> +Intel Arria 10 GX PCI card, PCI id 0X09C4
> +Depends on
> +  SPI_ALTERA
> +  MFD_INTEL_M10_BMC
> +  SENSORS_INTEL_M10_BMC_HWMON
> +
> +FPGA_DFL_D5005
> +Intel Stratix 10, D5005 PCI card, PCI id 0X0B2B
> +Depends on
> +  SPI_ALTERA
> +  MFD_INTEL_M10_BMC
> +  SENSORS_INTEL_M10_BMC_HWMON
> +  INTEL_S10_PHY
> +
> +FPGA_DFL_N3000
> +Intel Network Accelerator, N3000 PCI card, PCI id 0X0B30
> +Depends on
> +  SPI_ALTERA
> +  MFD_INTEL_M10_BMC
> +  SENSORS_INTEL_M10_BMC_HWMON
> +  INTEL_LL_10G_MAC
>  
>  Open discussion
>  ===============
> diff --git a/drivers/fpga/Kconfig b/drivers/fpga/Kconfig
> index 9d53bd9094e2..96603b1f6ff5 100644
> --- a/drivers/fpga/Kconfig
> +++ b/drivers/fpga/Kconfig
> @@ -138,6 +138,33 @@ config OF_FPGA_REGION
>  	  Support for loading FPGA images by applying a Device Tree
>  	  overlay.
>  
> +config FPGA_DFL_PAC10
> +	tristate "Intel Arria 10 GX PCI card"
> +	depends on SPI_ALTERA
> +	depends on SENSORS_INTEL_M10_BMC_HWMON
> +	depends on MFD_INTEL_M10_BMC
> +	select FPGA_DFL
> +	select FPGA_DFL_FME

The FPGA_DFL_FME depends on HWMON & PERF_EVENTS, seems we cannot select
it either.

> +	select FPGA_DFL_FME_MGR
> +	select FPGA_DFL_FME_BRIDGE
> +	select FPGA_DFL_FME_REGION
> +	select FPGA_DFL_AFU
> +	select FPGA_DFL_SPI_ALTERA
> +	select FPGA_DFL_PCI
> +	select IFPGA_SEC_MGR
> +
> +config FPGA_DFL_D5005
> +	tristate "Intel Stratix 10, D5005 PCI card"
> +	depends on INTEL_S10_PHY
> +	select FPGA_DFL_PAC10
> +	select FPGA_DFl_HSSI
> +
> +config FPGA_DFL_N3000
> +	tristate "Intel Network Accelerator, N3000 PCI card"
> +	depends on INTEL_LL_10G_MAC
> +	select FPGA_DFL_PAC10
> +	select FPGA_DFL_N3000_NIOS
> +
>  config FPGA_DFL
>  	tristate "FPGA Device Feature List (DFL) support"
>  	select FPGA_BRIDGE
> -- 
> 2.18.1