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PCI/portdrv: Use PCI Express Capability accessors 

Use PCI Express Capability access functions to simplify portdrv.

Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
This commit is contained in:
Jiang Liu 2012-07-24 17:20:08 +08:00 committed by Bjorn Helgaas
parent 028fbad480
commit 2dcfaf85cd
2 changed files with 6 additions and 18 deletions
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15
drivers/pci/pcie/portdrv_core.c
View File

@ -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, &reg16);
/* Hot-Plug Capable */
if ((cap_mask & PCIE_PORT_SERVICE_HP) && (reg16 & PCI_EXP_FLAGS_SLOT)) {
pci_read_config_dword(dev, pos + PCI_EXP_SLTCAP, &reg32);
if (cap_mask & PCIE_PORT_SERVICE_HP) {
pcie_capability_read_dword(dev, PCI_EXP_SLTCAP, &reg32);
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, &reg16);
reg16 &= ~(PCI_EXP_SLTCTL_CCIE | PCI_EXP_SLTCTL_HPIE);
pci_write_config_word(dev, pos, reg16);
pcie_capability_clear_word(dev, PCI_EXP_SLTCTL,
PCI_EXP_SLTCTL_CCIE | PCI_EXP_SLTCTL_HPIE);
}
}
/* AER capable */

9
drivers/pci/pcie/portdrv_pci.c
View File

@ -64,14 +64,7 @@ __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);
pcie_capability_set_dword(dev, PCI_EXP_RTSTA, PCI_EXP_RTSTA_PME);
}
static int pcie_portdrv_restore_config(struct pci_dev *dev)