| Message ID | 1343836477-7287-8-git-send-email-jiang.liu@huawei.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> Regards, Kenji Kaneshige > -----Original Message----- > From: Jiang Liu [mailto:liuj97@gmail.com] > Sent: Thursday, August 02, 2012 12:54 AM > To: Bjorn Helgaas; Don Dutile > Cc: Jiang Liu; Yinghai Lu; Izumi, Taku/? ?; Rafael J . Wysocki; Kaneshige, > Kenji/?? ??; Yijing Wang; linux-kernel@vger.kernel.org; > linux-pci@vger.kernel.org; Jiang Liu > Subject: [PATCH v3 07/32] PCI/portdrv: use PCIe capabilities access > functions to simplify implementation > > From: Jiang Liu <jiang.liu@huawei.com> > > Use PCIe capabilities access functions to simplify PCIe portdrv > implementation. > > Signed-off-by: Jiang Liu <liuj97@gmail.com> > Signed-off-by: Yijing Wang <wangyijing@huawei.com> > --- > drivers/pci/pcie/portdrv_core.c | 15 +++++---------- > drivers/pci/pcie/portdrv_pci.c | 10 ++-------- > 2 files changed, 7 insertions(+), 18 deletions(-) > > diff --git a/drivers/pci/pcie/portdrv_core.c > b/drivers/pci/pcie/portdrv_core.c > index bf320a9..274d524 100644 > --- a/drivers/pci/pcie/portdrv_core.c > +++ b/drivers/pci/pcie/portdrv_core.c > @@ -246,8 +246,7 @@ static void cleanup_service_irqs(struct pci_dev *dev) > */ > static int get_port_device_capability(struct pci_dev *dev) > { > - int services = 0, pos; > - u16 reg16; > + int services = 0; > u32 reg32; > int cap_mask = 0; > int err; > @@ -265,11 +264,9 @@ static int get_port_device_capability(struct pci_dev > *dev) > return 0; > } > > - pos = pci_pcie_cap(dev); > - pci_read_config_word(dev, pos + PCI_EXP_FLAGS, ®16); > /* Hot-Plug Capable */ > - if ((cap_mask & PCIE_PORT_SERVICE_HP) && (reg16 & > PCI_EXP_FLAGS_SLOT)) { > - pci_read_config_dword(dev, pos + PCI_EXP_SLTCAP, > ®32); > + if ((cap_mask & PCIE_PORT_SERVICE_HP)) { > + pci_pcie_capability_read_dword(dev, PCI_EXP_SLTCAP, > ®32); > if (reg32 & PCI_EXP_SLTCAP_HPC) { > services |= PCIE_PORT_SERVICE_HP; > /* > @@ -277,10 +274,8 @@ static int get_port_device_capability(struct pci_dev > *dev) > * enabled by the BIOS and the hot-plug service > driver > * is not loaded. > */ > - pos += PCI_EXP_SLTCTL; > - pci_read_config_word(dev, pos, ®16); > - reg16 &= ~(PCI_EXP_SLTCTL_CCIE | > PCI_EXP_SLTCTL_HPIE); > - pci_write_config_word(dev, pos, reg16); > + pci_pcie_capability_change_word(dev, > PCI_EXP_SLTCTL, > + 0, PCI_EXP_SLTCTL_CCIE | > PCI_EXP_SLTCTL_HPIE); > } > } > /* AER capable */ > diff --git a/drivers/pci/pcie/portdrv_pci.c > b/drivers/pci/pcie/portdrv_pci.c > index 24d1463..93f726c 100644 > --- a/drivers/pci/pcie/portdrv_pci.c > +++ b/drivers/pci/pcie/portdrv_pci.c > @@ -64,14 +64,8 @@ __setup("pcie_ports=", pcie_port_setup); > */ > void pcie_clear_root_pme_status(struct pci_dev *dev) > { > - int rtsta_pos; > - u32 rtsta; > - > - rtsta_pos = pci_pcie_cap(dev) + PCI_EXP_RTSTA; > - > - pci_read_config_dword(dev, rtsta_pos, &rtsta); > - rtsta |= PCI_EXP_RTSTA_PME; > - pci_write_config_dword(dev, rtsta_pos, rtsta); > + pci_pcie_capability_change_dword(dev, PCI_EXP_RTSTA, > + PCI_EXP_RTSTA_PME, 0); > } > > static int pcie_portdrv_restore_config(struct pci_dev *dev) > -- > 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index bf320a9..274d524 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -246,8 +246,7 @@ static void cleanup_service_irqs(struct pci_dev *dev) */ static int get_port_device_capability(struct pci_dev *dev) { - int services = 0, pos; - u16 reg16; + int services = 0; u32 reg32; int cap_mask = 0; int err; @@ -265,11 +264,9 @@ static int get_port_device_capability(struct pci_dev *dev) return 0; } - pos = pci_pcie_cap(dev); - pci_read_config_word(dev, pos + PCI_EXP_FLAGS, ®16); /* Hot-Plug Capable */ - if ((cap_mask & PCIE_PORT_SERVICE_HP) && (reg16 & PCI_EXP_FLAGS_SLOT)) { - pci_read_config_dword(dev, pos + PCI_EXP_SLTCAP, ®32); + if ((cap_mask & PCIE_PORT_SERVICE_HP)) { + pci_pcie_capability_read_dword(dev, PCI_EXP_SLTCAP, ®32); if (reg32 & PCI_EXP_SLTCAP_HPC) { services |= PCIE_PORT_SERVICE_HP; /* @@ -277,10 +274,8 @@ static int get_port_device_capability(struct pci_dev *dev) * enabled by the BIOS and the hot-plug service driver * is not loaded. */ - pos += PCI_EXP_SLTCTL; - pci_read_config_word(dev, pos, ®16); - reg16 &= ~(PCI_EXP_SLTCTL_CCIE | PCI_EXP_SLTCTL_HPIE); - pci_write_config_word(dev, pos, reg16); + pci_pcie_capability_change_word(dev, PCI_EXP_SLTCTL, + 0, PCI_EXP_SLTCTL_CCIE | PCI_EXP_SLTCTL_HPIE); } } /* AER capable */ diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 24d1463..93f726c 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -64,14 +64,8 @@ __setup("pcie_ports=", pcie_port_setup); */ void pcie_clear_root_pme_status(struct pci_dev *dev) { - int rtsta_pos; - u32 rtsta; - - rtsta_pos = pci_pcie_cap(dev) + PCI_EXP_RTSTA; - - pci_read_config_dword(dev, rtsta_pos, &rtsta); - rtsta |= PCI_EXP_RTSTA_PME; - pci_write_config_dword(dev, rtsta_pos, rtsta); + pci_pcie_capability_change_dword(dev, PCI_EXP_RTSTA, + PCI_EXP_RTSTA_PME, 0); } static int pcie_portdrv_restore_config(struct pci_dev *dev)