From: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
To: Yijing Wang <wangyijing@huawei.com>
Cc: "linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
Liviu Dudau <Liviu.Dudau@arm.com>, Arnd Bergmann <arnd@arndb.de>,
Phil Edworthy <phil.edworthy@renesas.com>,
Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
Jingoo Han <jg1.han@samsung.com>,
Bjorn Helgaas <bhelgaas@google.com>,
Russell King <linux@arm.linux.org.uk>,
Mohit Kumar <mohit.kumar@st.com>
Subject: Re: [RFC PATCH 2/2] arm: pcibios: move to generic PCI domains
Date: Thu, 30 Oct 2014 16:21:17 +0000 [thread overview]
Message-ID: <20141030162117.GB2048@red-moon> (raw)
In-Reply-To: <54522EA1.20707@huawei.com>
On Thu, Oct 30, 2014 at 12:27:13PM +0000, Yijing Wang wrote:
> On 2014/10/30 19:44, Lorenzo Pieralisi wrote:
> > Most if not all ARM PCI host controller device drivers either ignore the
> > domain field in the pci_sys_data structure or just increment it every
> > time a host controller is probed, using it as a domain counter.
> >
> > Therefore, instead of relying on pci_sys_data to stash the domain number
> > in a standard location, ARM pcibios code can be moved to the newly
> > introduced generic PCI domains code, implemented in commits:
> >
> > commit 41e5c0f81d3e676d671d96a0a1fafb27abfbd9
> > ("of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr()")
> >
> > commit 670ba0c8883b576d0aec28bd7a838358a4be1
> > ("PCI: Add generic domain handling")
> >
> > In order to assign a domain number dynamically, the ARM pcibios defines
> > the function, called by core PCI code:
> >
> > void pci_bus_assign_domain_nr(...)
> >
> > that relies on a DT property to define the domain number or falls back to
> > a counter; its usage replaces the current domain assignment code in PCI
> > host controllers present in the kernel.
>
> Nice clean up.
>
> Reviewed-by: Yijing Wang <wangyijing@huawei.com>
Thank you Yijing !
Lorenzo
next prev parent reply other threads:[~2014-10-30 16:21 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-30 11:44 [RFC PATCH 0/2] arm: pcibios: remove pci_sys_data domain Lorenzo Pieralisi
2014-10-30 11:44 ` [RFC PATCH 1/2] arm: cns3xxx: pci: remove artificial dependency on " Lorenzo Pieralisi
2014-11-01 12:32 ` Michał Mirosław
2014-11-03 10:09 ` Arnd Bergmann
2014-10-30 11:44 ` [RFC PATCH 2/2] arm: pcibios: move to generic PCI domains Lorenzo Pieralisi
2014-10-30 11:55 ` Arnd Bergmann
2014-10-30 16:20 ` Lorenzo Pieralisi
2014-10-30 12:27 ` Yijing Wang
2014-10-30 16:21 ` Lorenzo Pieralisi [this message]
2014-10-31 13:43 ` Phil Edworthy
2014-10-31 16:37 ` Bjorn Helgaas
2014-10-31 17:04 ` Phil Edworthy
2014-11-03 23:26 ` Simon Horman
2014-11-04 11:44 ` Liviu Dudau
2014-11-03 11:06 ` Lorenzo Pieralisi
2014-11-03 1:18 ` Jingoo Han
2014-11-03 2:36 ` Karicheri, Muralidharan
2014-11-03 11:23 ` Lorenzo Pieralisi
2014-11-03 11:33 ` Lucas Stach
2014-11-03 12:13 ` Jingoo Han
2014-11-03 3:48 ` Yijing Wang
2014-11-03 10:49 ` Lorenzo Pieralisi
2014-10-30 16:25 ` [RFC PATCH 0/2] arm: pcibios: remove pci_sys_data domain Jason Gunthorpe
2014-10-30 16:52 ` Lorenzo Pieralisi
2014-10-30 17:03 ` Jason Gunthorpe
2014-10-30 17:39 ` Liviu Dudau
2014-10-30 17:45 ` Jason Gunthorpe
2014-10-30 18:09 ` Lorenzo Pieralisi
2014-10-30 18:42 ` Jason Gunthorpe
2014-10-30 19:21 ` Arnd Bergmann
2014-10-30 19:35 ` Jason Gunthorpe
2014-10-30 20:03 ` Arnd Bergmann
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