| Message ID | 1424938344-4017-14-git-send-email-wangyijing@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Feb 26, 2015 at 04:12:07PM +0800, Yijing Wang wrote: > Introduce new scan function pci_scan_root_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 | 21 +++++++++++++++++++++ > include/linux/pci.h | 3 +++ > 2 files changed, 24 insertions(+), 0 deletions(-) > > diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c > index 8cec6ab..b5f9ca4 100644 > --- a/drivers/pci/probe.c > +++ b/drivers/pci/probe.c > @@ -2063,6 +2063,27 @@ static struct pci_bus *__pci_scan_root_bus( > return b; > } > > +struct pci_host_bridge *pci_scan_root_bridge(struct device *parent, > + u32 db, struct pci_ops *ops, void *sysdata, > + struct list_head *resources, struct pci_host_bridge_ops *phb_ops) I prefer "host bridge" over "root bridge" because that's the terminology used by the PCI specs.
On 2015/3/3 10:52, Bjorn Helgaas wrote: > On Thu, Feb 26, 2015 at 04:12:07PM +0800, Yijing Wang wrote: >> Introduce new scan function pci_scan_root_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 | 21 +++++++++++++++++++++ >> include/linux/pci.h | 3 +++ >> 2 files changed, 24 insertions(+), 0 deletions(-) >> >> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c >> index 8cec6ab..b5f9ca4 100644 >> --- a/drivers/pci/probe.c >> +++ b/drivers/pci/probe.c >> @@ -2063,6 +2063,27 @@ static struct pci_bus *__pci_scan_root_bus( >> return b; >> } >> >> +struct pci_host_bridge *pci_scan_root_bridge(struct device *parent, >> + u32 db, struct pci_ops *ops, void *sysdata, >> + struct list_head *resources, struct pci_host_bridge_ops *phb_ops) > > I prefer "host bridge" over "root bridge" because that's the terminology > used by the PCI specs. OK, I will use "host bridge" instead of "root bridge". > > . >
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 8cec6ab..b5f9ca4 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -2063,6 +2063,27 @@ static struct pci_bus *__pci_scan_root_bus( return b; } +struct pci_host_bridge *pci_scan_root_bridge(struct device *parent, + u32 db, struct pci_ops *ops, void *sysdata, + struct list_head *resources, struct pci_host_bridge_ops *phb_ops) +{ + struct pci_host_bridge *host; + struct pci_bus *bus; + + host = pci_create_host_bridge(parent, db, resources, + sysdata, phb_ops); + if (!host) + return NULL; + + bus = __pci_scan_root_bus(host, ops); + if (!bus) + pci_free_host_bridge(host); + + return host; +} +EXPORT_SYMBOL(pci_scan_root_bridge); + + struct pci_bus *pci_scan_root_bus(struct device *parent, u32 db, struct pci_ops *ops, void *sysdata, struct list_head *resources) { diff --git a/include/linux/pci.h b/include/linux/pci.h index a4b56e0..ef3a821 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -793,6 +793,9 @@ void pci_bus_release_busn_res(struct pci_bus *b); struct pci_bus *pci_scan_root_bus(struct device *parent, u32 dombus, struct pci_ops *ops, void *sysdata, struct list_head *resources); +struct pci_host_bridge *pci_scan_root_bridge(struct device *parent, + u32 dombus, struct pci_ops *ops, void *sysdata, + struct list_head *resources, struct pci_host_bridge_ops *phb_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);
Introduce new scan function pci_scan_root_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 | 21 +++++++++++++++++++++ include/linux/pci.h | 3 +++ 2 files changed, 24 insertions(+), 0 deletions(-)