linux-kernel - Re: [PATCH 5/6] include: fpga: adi-axi-common.h: add definitions for supported FPGAs

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Date:   Wed, 5 Aug 2020 09:02:10 -0700
From:   Tom Rix <trix@...hat.com>
To:     Alexandru Ardelean <alexandru.ardelean@...log.com>,
        linux-clk@...r.kernel.org, linux-fpga@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     mturquette@...libre.com, sboyd@...nel.org, mdf@...nel.org,
        Mircea Caprioru <mircea.caprioru@...log.com>
Subject: Re: [PATCH 5/6] include: fpga: adi-axi-common.h: add definitions for
 supported FPGAs


On 8/4/20 4:06 AM, Alexandru Ardelean wrote:
> From: Mircea Caprioru <mircea.caprioru@...log.com>
>
> All (newer) FPGA IP cores supported by Analog Devices, store information in
> the synthesized designs. This information describes various parameters,
> including the family of boards on which this is deployed, speed-grade, and
> so on.
>
> Currently, some of these definitions are deployed mostly on Xilinx boards,
> but they have been considered also for FPGA boards from other vendors.
>
> The register definitions are described at this link:
>   https://wiki.analog.com/resources/fpga/docs/hdl/regmap
> (the 'Base (common to all cores)' section).
>
> Signed-off-by: Mircea Caprioru <mircea.caprioru@...log.com>
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@...log.com>
> ---
>  include/linux/fpga/adi-axi-common.h | 37 +++++++++++++++++++++++++++++
>  1 file changed, 37 insertions(+)
>
> diff --git a/include/linux/fpga/adi-axi-common.h b/include/linux/fpga/adi-axi-common.h
> index 141ac3f251e6..7cca2d62cc45 100644
> --- a/include/linux/fpga/adi-axi-common.h
> +++ b/include/linux/fpga/adi-axi-common.h
> @@ -13,6 +13,9 @@
>  
>  #define ADI_AXI_REG_VERSION			0x0000
>  
> +#define ADI_AXI_REG_FPGA_INFO			0x001C
> +#define ADI_AXI_REG_FPGA_VOLTAGE		0x0140
> +
>  #define ADI_AXI_PCORE_VER(major, minor, patch)	\
>  	(((major) << 16) | ((minor) << 8) | (patch))
>  
> @@ -20,4 +23,38 @@
>  #define ADI_AXI_PCORE_VER_MINOR(version)	(((version) >> 8) & 0xff)
>  #define ADI_AXI_PCORE_VER_PATCH(version)	((version) & 0xff)
>  
> +#define ADI_AXI_INFO_FPGA_VOLTAGE(val)		((val) & 0xffff)
> +
> +#define ADI_AXI_INFO_FPGA_TECH(info)		(((info) >> 24) & 0xff)
> +#define ADI_AXI_INFO_FPGA_FAMILY(info)		(((info) >> 16) & 0xff)
> +#define ADI_AXI_INFO_FPGA_SPEED_GRADE(info)	(((info) >> 8) & 0xff)
> +
> +enum adi_axi_fgpa_technology {

enum types are defined but not used.  It would be better to convert all of these to #defines.

These are only the Xilinx values. Need to add the Intel values from

https://github.com/analogdevicesinc/hdl/blob/master/library/scripts/adi_intel_device_info_enc.tcl

The #define names need to include XILINX or INTEL.

Tom

> +	ADI_AXI_FPGA_TECH_UNKNOWN = 0,
> +	ADI_AXI_FPGA_TECH_SERIES7,
> +	ADI_AXI_FPGA_TECH_ULTRASCALE,
> +	ADI_AXI_FPGA_TECH_ULTRASCALE_PLUS,
> +};
> +
> +enum adi_axi_fpga_family {
> +	ADI_AXI_FPGA_FAMILY_UNKNOWN = 0,
> +	ADI_AXI_FPGA_FAMILY_ARTIX,
> +	ADI_AXI_FPGA_FAMILY_KINTEX,
> +	ADI_AXI_FPGA_FAMILY_VIRTEX,
> +	ADI_AXI_FPGA_FAMILY_ZYNQ,
> +};
> +
> +enum adi_axi_fpga_speed_grade {
> +	ADI_AXI_FPGA_SPEED_UNKNOWN	= 0,
> +	ADI_AXI_FPGA_SPEED_1		= 10,
> +	ADI_AXI_FPGA_SPEED_1L		= 11,
> +	ADI_AXI_FPGA_SPEED_1H		= 12,
> +	ADI_AXI_FPGA_SPEED_1HV		= 13,
> +	ADI_AXI_FPGA_SPEED_1LV		= 14,
> +	ADI_AXI_FPGA_SPEED_2		= 20,
> +	ADI_AXI_FPGA_SPEED_2L		= 21,
> +	ADI_AXI_FPGA_SPEED_2LV		= 22,
> +	ADI_AXI_FPGA_SPEED_3		= 30,
> +};
> +
>  #endif /* ADI_AXI_COMMON_H_ */