linux-kernel - Re: [RFC v2 5/7] PCI/ACPI: Consolidate common PCI host bridge code into ACPI core

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Message-ID: <5553F5BF.2080802@linux.intel.com>
Date:	Thu, 14 May 2015 09:09:19 +0800
From:	Jiang Liu <jiang.liu@...ux.intel.com>
To:	Hanjun Guo <hanjun.guo@...aro.org>,
	"Rafael J . Wysocki" <rjw@...ysocki.net>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Marc Zyngier <marc.zyngier@....com>,
	Yijing Wang <wangyijing@...wei.com>,
	Len Brown <lenb@...nel.org>
CC:	Lv Zheng <lv.zheng@...el.com>, LKML <linux-kernel@...r.kernel.org>,
	linux-pci@...r.kernel.org, linux-acpi@...r.kernel.org,
	"x86 @ kernel . org" <x86@...nel.org>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC v2 5/7] PCI/ACPI: Consolidate common PCI host bridge code
 into ACPI core

On 2015/5/13 21:25, Hanjun Guo wrote:
> On 2015年05月13日 20:24, Jiang Liu wrote:
>> On 2015/5/13 17:29, Hanjun Guo wrote:
>>> Hi Jiang,
>>>
>>> On 2015年05月05日 10:46, Jiang Liu wrote:
>>>
>>> struct pci_controller {
>>>          struct acpi_device *companion;
>>>          void *iommu;
>>>          int segment;
>>>          int node;               /* nearest node with memory or
>>> NUMA_NO_NODE for global allocation */
>>>
>>>          void *platform_data;
>>> };
>>>
>>> except void *platform_data;
>>>
>>> On ARM64, the structure is almost the same, so how about
>>> introduce
>>>
>>> struct pci_controller {
>>>          struct acpi_device *companion;  /* ACPI companion device */
>>>          void            *iommu;         /* IOMMU private data */
>>>          int             segment;        /* PCI domain */
>>>          int             node;           /* NUMA node */
>>> #ifdef CONFIG_IA64
>>>      void *platform_data;
>>> #endif
>>> };
>>>
>>> in this file, then can be used for all architectures?
>> Current mode is that architecture defines its own version of
>> struct pci_controller. It would be better to keep this pattern.
> 
> OK, thanks for the clarify :) So how about add my basic
> PCI support patch for ARM64 on top of you patch set to fix
> this problem?

Sure, please send me the patches and I will send out v3 to
cover your review comments.
Thanks!

> 
> Thanks
> Hanjun
> 
> 
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