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Date: Tue, 12 Dec 2017 15:14:04 -0600
From: Bjorn Helgaas <helgaas@...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>,
Mark Rutland <mark.rutland@....com>,
devicetree@...r.kernel.org, Linux-MIPS <linux-mips@...ux-mips.org>,
linux-pci <linux-pci@...r.kernel.org>,
Kevin Cernekee <cernekee@...il.com>,
Ralf Baechle <ralf@...ux-mips.org>,
bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>,
Gregory Fong <gregory.0xf0@...il.com>,
linux-arm-kernel@...ts.infradead.org,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>
Subject: Re: [PATCH v3 1/8] SOC: brcmstb: add memory API
[+cc Lorenzo]
On Tue, Dec 12, 2017 at 03:53:28PM -0500, Jim Quinlan wrote:
> On Tue, Dec 5, 2017 at 3:59 PM, Bjorn Helgaas <helgaas@...nel.org> wrote:
> > On Tue, Nov 14, 2017 at 05:12:05PM -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>
> >> ---
> >> drivers/soc/bcm/brcmstb/Makefile | 2 +-
> >> drivers/soc/bcm/brcmstb/memory.c | 172 +++++++++++++++++++++++++++++++++++++++
> >> include/soc/brcmstb/memory_api.h | 25 ++++++
> >> 3 files changed, 198 insertions(+), 1 deletion(-)
> >> create mode 100644 drivers/soc/bcm/brcmstb/memory.c
> >> create mode 100644 include/soc/brcmstb/memory_api.h
> >>
> >> diff --git a/drivers/soc/bcm/brcmstb/Makefile b/drivers/soc/bcm/brcmstb/Makefile
> >> index 9120b27..4cea7b6 100644
> >> --- a/drivers/soc/bcm/brcmstb/Makefile
> >> +++ b/drivers/soc/bcm/brcmstb/Makefile
> >> @@ -1 +1 @@
> >> -obj-y += common.o biuctrl.o
> >> +obj-y += common.o biuctrl.o memory.o
> >> diff --git a/drivers/soc/bcm/brcmstb/memory.c b/drivers/soc/bcm/brcmstb/memory.c
> >> new file mode 100644
> >> index 0000000..eb647ad9
> >> --- /dev/null
> >> +++ b/drivers/soc/bcm/brcmstb/memory.c
> >
> > I sort of assume based on [1] that every new file should have an SPDX
> > identifier ("The Linux kernel requires the precise SPDX identifier in
> > all source files") and that the actual text of the GPL can be omitted.
> >
> > Only a few files in drivers/pci currently have an SPDX identifier. I
> > don't know if that's oversight or work-in-progress or what.
> >
> > [1] https://lkml.kernel.org/r/20171204212120.484179273@linutronix.de
> >
>
> Bjorn, Did you get a chance to review the other commits of this
> submission (V3)? I would like any additional feedback before I send
> out a V4 with SPDX fixes. Thanks, JimQ
Lorenzo is taking over drivers/pci/host/* and he'll no doubt have some
comments when he gets to this. I'll point out a few quick formatting
things in the meantime.
> >> @@ -0,0 +1,172 @@
> >> +/*
> >> + * Copyright © 2015-2017 Broadcom
> >> + *
> >> + * This program is free software; you can redistribute it and/or modify
> >> + * it under the terms of the GNU General Public License version 2 as
> >> + * published by the Free Software Foundation.
> >> + *
> >> + * This program is distributed in the hope that it will be useful,
> >> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> >> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> >> + * GNU General Public License for more details.
> >> + *
> >> + * A copy of the GPL is available at
> >> + * http://www.broadcom.com/licenses/GPLv2.php or from the Free Software
> >> + * Foundation at https://www.gnu.org/licenses/ .
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