linux-kernel - Re: [PATCH 1/2] include: fpga: adi-axi-common.h: add definitions for supported FPGAs

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Date:   Wed, 10 Feb 2021 20:00:10 -0800
From:   Moritz Fischer <mdf@...nel.org>
To:     Alexandru Ardelean <alexandru.ardelean@...log.com>
Cc:     linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        mturquette@...libre.com, sboyd@...nel.org, lars@...afoo.de,
        linux-fpga@...r.kernel.org, mdf@...nel.org, ardeleanalex@...il.com,
        Mircea Caprioru <mircea.caprioru@...log.com>
Subject: Re: [PATCH 1/2] include: fpga: adi-axi-common.h: add definitions for
 supported FPGAs

Alexandru,

On Wed, Feb 10, 2021 at 12:15:34PM +0200, Alexandru Ardelean wrote:
> From: Mircea Caprioru <mircea.caprioru@...log.com>
> 
> All (newer) FPGA IP cores supported by Analog Devices, store information in

Nit: extra ',' ?
> 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.
Let's add them together with the code that uses them.
> 
> The register definitions are described at this link:
>   https://wiki.analog.com/resources/fpga/docs/hdl/regmap
> (the 'Base (common to all cores)' section).
> 
> Acked-by: Moritz Fischer <mdf@...nel.org>
This patchset is very different from the reviewed one earlier. Please
don't just copy Acked-by's.

> Signed-off-by: Mircea Caprioru <mircea.caprioru@...log.com>
> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@...log.com>
> ---
> 
> This is a continuation of this old set:
> https://lore.kernel.org/linux-clk/20200929144417.89816-1-alexandru.ardelean@analog.com/
> 
> Particularly patches:
>   https://lore.kernel.org/linux-clk/20200929144417.89816-15-alexandru.ardelean@analog.com/
>   https://lore.kernel.org/linux-clk/20200929144417.89816-16-alexandru.ardelean@analog.com/
> 
> That was v4, but this patchset was split away from it, to resolve
> discussion on some other patches in that set.
> 
> The other patches were accepted here:
>   https://lore.kernel.org/linux-clk/20210201151245.21845-1-alexandru.ardelean@analog.com/
> 
>  include/linux/fpga/adi-axi-common.h | 103 ++++++++++++++++++++++++++++
>  1 file changed, 103 insertions(+)
> 
> diff --git a/include/linux/fpga/adi-axi-common.h b/include/linux/fpga/adi-axi-common.h
> index 141ac3f251e6..1a7f18e3a384 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 +23,104 @@
>  #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)
> +#define ADI_AXI_INFO_FPGA_DEV_PACKAGE(info)	((info) & 0xff)

Do we really need all the macros?
> +
> +/**
> + * FPGA Technology definitions
> + */
> +#define ADI_AXI_FPGA_TECH_XILINX_UNKNOWN		0
> +#define ADI_AXI_FPGA_TECH_XILINS_SERIES7		1
> +#define ADI_AXI_FPGA_TECH_XILINX_ULTRASCALE		2
> +#define ADI_AXI_FPGA_TECH_XILINX_ULTRASCALE_PLUS	3
> +
> +#define ADI_AXI_FPGA_TECH_INTEL_UNKNOWN			100
> +#define ADI_AXI_FPGA_TECH_INTEL_CYCLONE_5		101
> +#define ADI_AXI_FPGA_TECH_INTEL_CYCLONE_10		102
> +#define ADI_AXI_FPGA_TECH_INTEL_ARRIA_10		103
> +#define ADI_AXI_FPGA_TECH_INTEL_STRATIX_10		104
> +
> +/**
> + * FPGA Family definitions
> + */
> +#define ADI_AXI_FPGA_FAMILY_UNKNOWN			0
> +
> +#define ADI_AXI_FPGA_FAMILY_XILINX_ARTIX		1
> +#define ADI_AXI_FPGA_FAMILY_XILINX_KINTEX		2
> +#define ADI_AXI_FPGA_FAMILY_XILINX_VIRTEX		3
> +#define ADI_AXI_FPGA_FAMILY_XILINX_ZYNQ			4
> +
> +#define ADI_AXI_FPGA_FAMILY_INTEL_SX			1
> +#define ADI_AXI_FPGA_FAMILY_INTEL_GX			2
> +#define ADI_AXI_FPGA_FAMILY_INTEL_GT			3
> +#define ADI_AXI_FPGA_FAMILY_INTEL_GZ			4
> +
> +/**
> + * FPGA Speed-grade definitions
> + */
> +#define ADI_AXI_FPGA_SPEED_GRADE_UNKNOWN		0
> +
> +#define ADI_AXI_FPGA_SPEED_GRADE_XILINX_1		10
> +#define ADI_AXI_FPGA_SPEED_GRADE_XILINX_1L		11
> +#define ADI_AXI_FPGA_SPEED_GRADE_XILINX_1H		12
> +#define ADI_AXI_FPGA_SPEED_GRADE_XILINX_1HV		13
> +#define ADI_AXI_FPGA_SPEED_GRADE_XILINX_1LV		14
> +#define ADI_AXI_FPGA_SPEED_GRADE_XILINX_2		20
> +#define ADI_AXI_FPGA_SPEED_GRADE_XILINX_2L		21
> +#define ADI_AXI_FPGA_SPEED_GRADE_XILINX_2LV		22
> +#define ADI_AXI_FPGA_SPEED_GRADE_XILINX_3		30
> +
> +#define ADI_AXI_FPGA_SPEED_GRADE_INTEL_1		1
> +#define ADI_AXI_FPGA_SPEED_GRADE_INTEL_2		2
> +#define ADI_AXI_FPGA_SPEED_GRADE_INTEL_3		3
> +#define ADI_AXI_FPGA_SPEED_GRADE_INTEL_4		4
> +#define ADI_AXI_FPGA_SPEED_GRADE_INTEL_5		5
> +#define ADI_AXI_FPGA_SPEED_GRADE_INTEL_6		6
> +#define ADI_AXI_FPGA_SPEED_GRADE_INTEL_7		7
> +#define ADI_AXI_FPGA_SPEED_GRADE_INTEL_8		8
> +#define ADI_AXI_FPGA_SPEED_GRADE_INTEL_9		9
> +
> +/**
> + * FPGA Device Package definitions
> + */
> +#define ADI_AXI_FPGA_DEV_PACKAGE_UNKNOWN		0
> +
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_RF		1
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_FL		2
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_FF		3
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_FB		4
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_HC		5
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_FH		6
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_CS		7
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_CP		8
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_FT		9
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_FG		10
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_SB		11
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_RB		12
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_RS		13
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_CL		14
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_SF		15
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_BA		16
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_FA		17
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_FS		18
> +#define ADI_AXI_FPGA_DEV_PACKAGE_XILINX_FI		19
> +
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_BGA		1
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_PGA		2
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_FBGA		3
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_HBGA		4
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_PDIP		5
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_EQFP		6
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_PLCC		7
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_PQFP		8
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_RQFP		9
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_TQFP		10
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_UBGA		11
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_UFBGA		12
> +#define ADI_AXI_FPGA_DEV_PACKAGE_INTEL_MBGA		13

What is using those? Do these package impact anything behavioral?
> +
>  #endif /* ADI_AXI_COMMON_H_ */
> -- 
> 2.17.1
> 

- Moritz

PS: The subject line could use a bit of work, too :)