linux-kernel - Re: [PATCH v2 07/20] mips: Add MIPS Warrior P5600 support

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Date:   Thu, 7 May 2020 13:17:35 +0200
From:   Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To:     Sergey.Semin@...kalelectronics.ru
Cc:     Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Paul Burton <paulburton@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Arnd Bergmann <arnd@...db.de>,
        Rob Herring <robh+dt@...nel.org>, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, Jiaxun Yang <jiaxun.yang@...goat.com>,
        Alexander Lobakin <alobakin@...nk.ru>,
        Huacai Chen <chenhc@...ote.com>,
        Cedric Hombourger <Cedric_Hombourger@...tor.com>,
        René van Dorst <opensource@...rst.com>,
        Ard Biesheuvel <ardb@...nel.org>, Jessica Yu <jeyu@...nel.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 07/20] mips: Add MIPS Warrior P5600 support

On Wed, May 06, 2020 at 08:42:25PM +0300, Sergey.Semin@...kalelectronics.ru wrote:
>  
> +config CPU_P5600
> +	bool "MIPS Warrior P5600"
> +	depends on SYS_HAS_CPU_P5600
> +	select CPU_HAS_PREFETCH
> +	select CPU_SUPPORTS_32BIT_KERNEL
> +	select CPU_SUPPORTS_HIGHMEM
> +	select CPU_SUPPORTS_MSA
> +	select CPU_SUPPORTS_UNCACHED_ACCELERATED
> +	select CPU_SUPPORTS_CPUFREQ
> +	select CPU_MIPSR2_IRQ_VI
> +	select CPU_MIPSR2_IRQ_EI
> +	select HAVE_KVM
> +	select MIPS_O32_FP64_SUPPORT
> +	help
> +	  Choose this option to build a kernel for MIPS Warrior P5600 CPU.
> +	  It's based on MIPS32r5 ISA with XPA, EVA, dual/quad issue exec pipes,
> +	  MMU with two-levels TLB, UCA, MSA, MDU core level features and system
> +	  level features like up to six P5600 calculation cores, CM2 with L2
> +	  cache, IOCU/IOMMU (though might be unused depending on the system-
> +	  specific IP core configuration), GIC, CPC, virtualisation module,
> +	  eJTAG and PDtrace.
> +
>  config CPU_R3000
>  	bool "R3000"
>  	depends on SYS_HAS_CPU_R3000
> @@ -1841,7 +1863,8 @@ endchoice
>  config CPU_MIPS32_3_5_FEATURES
>  	bool "MIPS32 Release 3.5 Features"
>  	depends on SYS_HAS_CPU_MIPS32_R3_5
> -	depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6
> +	depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_MIPS32_R6 || \
> +		   CPU_P5600
>  	help
>  	  Choose this option to build a kernel for release 2 or later of the
>  	  MIPS32 architecture including features from the 3.5 release such as
> @@ -1861,7 +1884,7 @@ config CPU_MIPS32_3_5_EVA
>  config CPU_MIPS32_R5_FEATURES
>  	bool "MIPS32 Release 5 Features"
>  	depends on SYS_HAS_CPU_MIPS32_R5
> -	depends on CPU_MIPS32_R2 || CPU_MIPS32_R5
> +	depends on CPU_MIPS32_R2 || CPU_MIPS32_R5 || CPU_P5600
>  	help
>  	  Choose this option to build a kernel for release 2 or later of the
>  	  MIPS32 architecture including features from release 5 such as
> @@ -2016,6 +2039,10 @@ config SYS_HAS_CPU_MIPS64_R6
>  	bool
>  	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
>  
> +config SYS_HAS_CPU_P5600
> +	bool
> +	select ARCH_HAS_SYNC_DMA_FOR_CPU if DMA_NONCOHERENT
> +

P5600 is CPU_MIPS_R5 so can't you select it here and drop all the || CPU_5600
above/below ?

Thomas.

-- 
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea.                                                [ RFC1925, 2.3 ]