linux-kernel - Re: [PATCH v4 1/8] SOC: brcmstb: add memory API

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Date:   Fri, 9 Mar 2018 15:07:27 +0000
From:   James Hogan <jhogan@...nel.org>
To:     Jim Quinlan <jim2101024@...il.com>
Cc:     linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
        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>,
        Jonas Gorski <jonas.gorski@...il.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        linux-pci@...r.kernel.org, bcm-kernel-feedback-list@...adcom.com,
        Gregory Fong <gregory.0xf0@...il.com>,
        Kevin Cernekee <cernekee@...il.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 v4 1/8] SOC: brcmstb: add memory API

On Mon, Jan 15, 2018 at 06:28:38PM -0500, Jim Quinlan wrote:
> From: Florian Fainelli <f.fainelli@...il.com>
> 
> This commit adds a memory API suitable for ascertaining the sizes of
> each of the N memory controllers in a Broadcom STB chip.  Its first
> user will be the Broadcom STB PCIe root complex driver, which needs
> to know these sizes to properly set up DMA mappings for inbound
> regions.
> 
> We cannot use memblock here or anything like what Linux provides
> because it collapses adjacent regions within a larger block, and here
> we actually need per-memory controller addresses and sizes, which is
> why we resort to manual DT parsing.
> 
> Signed-off-by: Jim Quinlan <jim2101024@...il.com>
> 
> Conflicts:
> 	drivers/soc/bcm/brcmstb/Makefile

That can go.

> +++ b/drivers/soc/bcm/brcmstb/memory.c
...
> +/* Macro to help extract property data */
> +#define DT_PROP_DATA_TO_U32(b, offs) (fdt32_to_cpu(*(u32*)(b + offs)))

Checkpatch complains about missing whitespace after u32.

Cheers
James

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