From: Yijing Wang <wangyijing@huawei.com>
To: Arnd Bergmann <arnd@arndb.de>, linux-arm-kernel@lists.infradead.org
Cc: Liviu Dudau <liviu@dudau.co.uk>, Tony Luck <tony.luck@intel.com>,
Russell King <linux@arm.linux.org.uk>,
Marc Zyngier <marc.zyngier@arm.com>,
linux-pci@vger.kernel.org, x86@kernel.org,
linux-kernel@vger.kernel.org,
Jiang Liu <jiang.liu@linux.intel.com>,
Bjorn Helgaas <bhelgaas@google.com>,
linux-m68k@lists.linux-m68k.org,
Geert Uytterhoeven <geert@linux-m68k.org>,
linux-alpha@vger.kernel.org, linux-ia64@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Guan Xuetao <gxt@mprc.pku.edu.cn>,
Yinghai Lu <yinghai@kernel.org>,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH 18/28] PCI/sparc: Use pci_scan_root_bridge() for simplicity
Date: Mon, 19 Jan 2015 11:17:02 +0800 [thread overview]
Message-ID: <54BC772E.6020103@huawei.com> (raw)
In-Reply-To: <2658988.B0VmbMPdJ9@wuerfel>
On 2015/1/16 18:01, Arnd Bergmann wrote:
> On Friday 16 January 2015 09:44:16 Yijing Wang wrote:
>> +static void pci_host_bridge_probe_mode(
>> + struct pci_host_bridge *host)
>> +{
>> + host->of_scan = true;
>> +}
>>
>
> I probably missed something here, but where does host->of_scan
> get used?
>
It is used in __pci_scan_root_bus() to detect whether of scan bus is needed in patch 11.
@@ -2051,10 +2053,17 @@ static struct pci_bus *__pci_scan_root_bus(
pci_bus_insert_busn_res(b, host->busnum, 255);
}
- max = pci_scan_child_bus(b);
+ if (host->ops && host->ops->phb_probe_mode)
+ host->ops->phb_probe_mode(host);
- if (!found)
- pci_bus_update_busn_res_end(b, max);
+ if (host->of_scan) {
+ if (host->ops &&host->ops->phb_of_scan_bus)
+ host->ops->phb_of_scan_bus(host);
+ } else {
+ max = pci_scan_child_bus(b);
+ if (!found)
+ pci_bus_update_busn_res_end(b, max);
+ }
return b;
Thanks!
Yijing.
> Arnd
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
> .
>
--
Thanks!
Yijing
next prev parent reply other threads:[~2015-01-19 3:17 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-16 1:43 [PATCH 00/28] Refine PCI scan interfaces and make generic pci host bridge Yijing Wang
2015-01-16 1:43 ` [PATCH 01/28] PCI: Rip out pci_bus_add_devices() from pci_scan_bus() Yijing Wang
2015-01-16 23:15 ` Yinghai Lu
2015-01-16 23:16 ` Yinghai Lu
2015-01-19 2:04 ` Yijing Wang
2015-01-19 4:59 ` Greg Ungerer
2015-01-19 8:23 ` Arnd Bergmann
2015-01-16 1:44 ` [PATCH 02/28] PCI: Rip out pci_bus_add_devices() from pci_scan_root_bus() Yijing Wang
2015-01-16 1:44 ` [PATCH 03/28] xen/PCI: Don't use deprecated function pci_scan_bus_parented() Yijing Wang
2015-01-16 1:44 ` [PATCH 04/28] PCI: Remove deprecated pci_scan_bus_parented() Yijing Wang
2015-01-16 1:44 ` [PATCH 05/28] PCI: Rename pci_scan_bus() to pci_scan_bus_legacy() Yijing Wang
2015-01-16 1:44 ` [PATCH 06/28] PCI: Combine PCI domain and bus number in u32 arg Yijing Wang
2015-01-16 1:44 ` [PATCH 07/28] PCI: Pass PCI domain number combined with root bus number Yijing Wang
2015-01-16 1:44 ` [PATCH 08/28] PCI: Introduce pci_host_assign_domain_nr() to assign domain Yijing Wang
2015-01-16 9:08 ` Arnd Bergmann
2015-01-16 9:40 ` Arnd Bergmann
2015-01-19 2:14 ` Yijing Wang
2015-01-19 9:50 ` Arnd Bergmann
2015-01-19 10:56 ` Yijing Wang
2015-01-16 1:44 ` [PATCH 09/28] PCI: Separate pci_host_bridge creation out of pci_create_root_bus() Yijing Wang
2015-01-16 9:14 ` Arnd Bergmann
2015-01-16 9:34 ` Arnd Bergmann
2015-01-19 2:39 ` Yijing Wang
2015-01-16 1:44 ` [PATCH 10/28] PCI: Save sysdata in pci_host_bridge drvdata Yijing Wang
2015-01-16 9:18 ` Arnd Bergmann
2015-01-19 3:12 ` Yijing Wang
2015-01-19 9:52 ` Arnd Bergmann
2015-01-16 1:44 ` [PATCH 11/28] PCI: Introduce pci_host_bridge_ops to setup host bridge Yijing Wang
2015-01-16 9:23 ` Arnd Bergmann
2015-01-16 9:35 ` Arnd Bergmann
2015-01-16 1:44 ` [PATCH 12/28] PCI: Introduce new scan function pci_scan_root_bridge() Yijing Wang
2015-01-16 1:44 ` [PATCH 13/28] PCI/x86: Refine pci_acpi_scan_root() with generic pci_host_bridge Yijing Wang
2015-01-16 1:44 ` [PATCH 14/28] PCI/IA64: " Yijing Wang
2015-01-16 1:44 ` [PATCH 15/28] PCI/powerpc: Rename pcibios_root_bridge_prepare() for better readability Yijing Wang
2015-01-16 1:44 ` [PATCH 16/28] PCI/powerpc: Use pci_scan_root_bridge() for simplicity Yijing Wang
2015-01-16 1:44 ` [PATCH 17/28] PCI: Remove weak pcibios_root_bridge_prepare() Yijing Wang
2015-01-16 1:44 ` [PATCH 18/28] PCI/sparc: Use pci_scan_root_bridge() for simplicity Yijing Wang
2015-01-16 10:01 ` Arnd Bergmann
2015-01-19 3:17 ` Yijing Wang [this message]
2015-01-19 8:44 ` Arnd Bergmann
2015-01-19 10:53 ` Yijing Wang
2015-01-16 1:44 ` [PATCH 19/28] PCI: Introduce pci_bus_child_max_busnr() Yijing Wang
2015-01-16 1:44 ` [PATCH 20/28] PCI/Parisc: Use pci_scan_root_bus() for simplicity Yijing Wang
2015-01-16 1:44 ` [PATCH 21/28] PCI/mvebu: Use pci_common_init_dev() to simplify code Yijing Wang
2015-01-16 1:44 ` [PATCH 22/28] PCI/tegra: Remove redundant tegra_pcie_scan_bus() Yijing Wang
2015-01-16 1:44 ` [PATCH 23/28] PCI/designware: Use pci_scan_root_bus() for simplicity Yijing Wang
2015-01-17 16:39 ` Sergei Shtylyov
2015-01-19 3:17 ` Yijing Wang
2015-01-16 1:44 ` [PATCH 24/28] PCI/xgene: Use pci_scan_root_bus() instead of pci_create_root_bus() Yijing Wang
2015-01-16 1:44 ` [PATCH 25/28] PCI: Rename __pci_create_root_bus() to pci_create_root_bus() Yijing Wang
2015-01-16 1:44 ` [PATCH 26/28] PCI: Export find_pci_host_bridge() Yijing Wang
2015-01-16 1:44 ` [PATCH 27/28] PCI: Remove platform specific pci_domain_nr() Yijing Wang
2015-01-16 9:44 ` Arnd Bergmann
2015-01-19 3:19 ` Yijing Wang
2015-01-16 1:44 ` [PATCH 28/28] PCI: Remove pci_bus_assign_domain_nr() Yijing Wang
2015-01-16 10:12 ` [PATCH 00/28] Refine PCI scan interfaces and make generic pci host bridge Arnd Bergmann
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