From: Yijing Wang <wangyijing@huawei.com>
To: Bjorn Helgaas <bhelgaas@google.com>
Cc: Jiang Liu <jiang.liu@linux.intel.com>,
<linux-pci@vger.kernel.org>, Yinghai Lu <yinghai@kernel.org>,
<linux-kernel@vger.kernel.org>,
Marc Zyngier <marc.zyngier@arm.com>,
<linux-arm-kernel@lists.infradead.org>,
Russell King <linux@arm.linux.org.uk>, <dja@axtens.net>,
<x86@kernel.org>, Thomas Gleixner <tglx@linutronix.de>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Rusty Russell <rusty@rustcorp.com.au>,
Tony Luck <tony.luck@intel.com>, <linux-ia64@vger.kernel.org>,
"David S. Miller" <davem@davemloft.net>,
"Guan Xuetao" <gxt@mprc.pku.edu.cn>,
<linux-alpha@vger.kernel.org>, <linux-m68k@vger.kernel.org>,
Liviu Dudau <liviu@dudau.co.uk>, "Arnd Bergmann" <arnd@arndb.de>,
Geert Uytterhoeven <geert@linux-m68k.org>,
"Yijing Wang" <wangyijing@huawei.com>
Subject: [PATCH v10 15/29] PCI: Introduce new scan function pci_scan_host_bridge()
Date: Tue, 21 Apr 2015 19:34:34 +0800 [thread overview]
Message-ID: <1429616088-10249-16-git-send-email-wangyijing@huawei.com> (raw)
In-Reply-To: <1429616088-10249-1-git-send-email-wangyijing@huawei.com>
Introduce new scan function pci_scan_host_bridge() to
support host bridge drivers that need to provide platform
own pci_host_bridge_ops.
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
---
drivers/pci/probe.c | 23 +++++++++++++++++++++++
include/linux/pci.h | 3 +++
2 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 83cf7c6..708bcf1 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -2064,6 +2064,29 @@ void pci_bus_release_busn_res(struct pci_bus *b)
res, ret ? "can not be" : "is");
}
+struct pci_host_bridge *pci_scan_host_bridge(
+ struct device *parent, int domain,
+ void *sysdata, struct list_head *resources,
+ struct pci_host_bridge_ops *ops)
+{
+ struct pci_host_bridge *host;
+
+ host = pci_create_host_bridge(parent, domain, sysdata,
+ resources, ops);
+ if (!host)
+ return NULL;
+
+ host->bus = __pci_create_root_bus(host, ops->pci_ops);
+ if (!host->bus) {
+ pci_free_host_bridge(host);
+ return NULL;
+ }
+
+ pci_scan_child_bus(host->bus);
+ return host;
+}
+EXPORT_SYMBOL(pci_scan_host_bridge);
+
struct pci_bus *pci_scan_root_bus(struct device *parent, int domain,
int bus, struct pci_ops *ops, void *sysdata,
struct list_head *resources)
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 91fde6a..13edbf1 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -796,6 +796,9 @@ void pci_bus_release_busn_res(struct pci_bus *b);
struct pci_bus *pci_scan_root_bus(struct device *parent, int domain, int bus,
struct pci_ops *ops, void *sysdata,
struct list_head *resources);
+struct pci_host_bridge *pci_scan_host_bridge(struct device *parent,
+ int domain, void *sysdata, struct list_head *resources,
+ struct pci_host_bridge_ops *ops);
struct pci_bus *pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev,
int busnr);
void pcie_update_link_speed(struct pci_bus *bus, u16 link_status);
--
1.7.1
next prev parent reply other threads:[~2015-04-21 11:38 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-04-21 11:34 [PATCH v10 00/29] Refine PCI scan interfaces and make generic pci host bridge Yijing Wang
2015-04-21 11:34 ` [PATCH v10 01/29] xen/PCI: Don't use deprecated function pci_scan_bus_parented() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 02/29] PCI: Remove deprecated pci_scan_bus_parented() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 03/29] PCI: Save domain in pci_host_bridge Yijing Wang
2015-04-21 11:34 ` [PATCH v10 04/29] PCI: Move pci_bus_assign_domain_nr() declaration into drivers/pci/pci.h Yijing Wang
2015-04-21 11:34 ` [PATCH v10 05/29] PCI: Remove argument bus for pci_create_root_bus() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 06/29] PCI: Alloc busn resource dynamically for pci_scan_bus() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 07/29] PCI: Allocate busn resource for pci_scan_root_bus() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 08/29] PCI: Introduce pci_host_assign_domain_nr() to assign domain Yijing Wang
2015-04-21 11:34 ` [PATCH v10 09/29] PCI: Separate pci_host_bridge creation out of pci_create_root_bus() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 10/29] PCI: Introduce pci_host_bridge_list to manage host bridges Yijing Wang
2015-04-21 11:34 ` [PATCH v10 11/29] PCI: Save sysdata in pci_host_bridge drvdata Yijing Wang
2015-04-21 11:34 ` [PATCH v10 12/29] powerpc/PCI: Rename pcibios_root_bridge_prepare() to pcibios_set_root_bus_speed() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 13/29] PCI: Move pcibios_root_bridge_prepare() to pci_create_host_bridge() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 14/29] PCI: Introduce pci_host_bridge_ops to support host specific operations Yijing Wang
2015-04-21 11:34 ` Yijing Wang [this message]
2015-04-21 11:34 ` [PATCH v10 16/29] PCI: Introduce pci_bus_child_max_busnr() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 17/29] x86/PCI: Refine pci_acpi_scan_root() with generic pci_host_bridge Yijing Wang
2015-04-21 11:34 ` [PATCH v10 18/29] ia64/PCI: " Yijing Wang
2015-04-21 11:34 ` [PATCH v10 19/29] powerpc/pci: Use pci_scan_host_bridge() for simplicity Yijing Wang
2015-04-21 11:34 ` [PATCH v10 20/29] PCI: Remove pcibios_root_bridge_prepare() and pcibos_set_root_bus_speed() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 21/29] sparc/PCI: Use pci_scan_host_bridge() for simplicity Yijing Wang
2015-04-21 11:34 ` [PATCH v10 22/29] parisc/PCI: Use pci_scan_root_bus() " Yijing Wang
2015-04-21 11:34 ` [PATCH v10 23/29] PCI/mvebu: Use pci_common_init_dev() to simplify code Yijing Wang
2015-04-21 11:34 ` [PATCH v10 24/29] PCI/tegra: Remove redundant tegra_pcie_scan_bus() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 25/29] PCI/designware: Use pci_scan_root_bus() for simplicity Yijing Wang
2015-04-21 11:34 ` [PATCH v10 26/29] PCI/xgene: Use pci_scan_root_bus() instead of pci_create_root_bus() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 27/29] PCI: Rename __pci_create_root_bus() to pci_create_root_bus() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 28/29] PCI: Remove platform specific pci_domain_nr() Yijing Wang
2015-04-21 11:34 ` [PATCH v10 29/29] PCI: Remove pci_bus_assign_domain_nr() Yijing Wang
2015-04-27 4:09 ` [PATCH v10 00/29] Refine PCI scan interfaces and make generic pci host bridge Daniel Axtens
2015-04-27 6:25 ` Yijing Wang
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