linux-kernel - Re: [PATCH 1/8] SOC: brcmstb: add memory API

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Message-ID: <a83617d0-8506-7fe4-2870-d9dbd9ffdb3f@gmail.com>
Date:   Tue, 24 Oct 2017 17:23:24 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Jim Quinlan <jim2101024@...il.com>, linux-kernel@...r.kernel.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Brian Norris <computersforpeace@...il.com>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Robin Murphy <robin.murphy@....com>,
        Christoph Hellwig <hch@....de>,
        Florian Fainelli <f.fainelli@...il.com>
Cc:     linux-pci@...r.kernel.org, bcm-kernel-feedback-list@...adcom.com,
        Gregory Fong <gregory.0xf0@...il.com>,
        Kevin Cernekee <cernekee@...il.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mips@...ux-mips.org, Ralf Baechle <ralf@...ux-mips.org>
Subject: Re: [PATCH 1/8] SOC: brcmstb: add memory API

Hi Jim,

On 10/24/2017 11:15 AM, Jim Quinlan wrote:
> +#elif defined(CONFIG_MIPS)
> +int brcmstb_memory_phys_addr_to_memc(phys_addr_t pa)
> +{
> +	/* The logic here is fairly simple and hardcoded: if pa <= 0x5000_0000,
> +	 * then this is MEMC0, else MEMC1.
> +	 *
> +	 * For systems with 2GB on MEMC0, MEMC1 starts at 9000_0000, with 1GB
> +	 * on MEMC0, MEMC1 starts at 6000_0000.
> +	 */
> +	if (pa >= 0x50000000ULL)
> +		return 1;
> +	else
> +		return 0;
> +}
> +#endif

We may be missing an EXPORT_SYMBOL_GPL(brcmstb_memory_phys_to_addr_memc)
here?

Thanks!
-- 
Florian