INIT_LIST_HEAD(&b->node);
INIT_LIST_HEAD(&b->children);
INIT_LIST_HEAD(&b->devices);
+ INIT_LIST_HEAD(&b->slots);
}
return b;
}
* reading the dword at 0x100 which must either be 0 or a valid extended
* capability header.
*/
-int pci_cfg_space_size_ext(struct pci_dev *dev, unsigned check_exp_pcix)
+int pci_cfg_space_size_ext(struct pci_dev *dev)
{
- int pos;
u32 status;
- if (!check_exp_pcix)
- goto skip;
+ if (pci_read_config_dword(dev, 256, &status) != PCIBIOS_SUCCESSFUL)
+ goto fail;
+ if (status == 0xffffffff)
+ goto fail;
+
+ return PCI_CFG_SPACE_EXP_SIZE;
+
+ fail:
+ return PCI_CFG_SPACE_SIZE;
+}
+
+/**
+ * pci_disable_pme - Disable the PME function of PCI device
+ * @dev: PCI device affected
+ * -EINVAL is returned if PCI device doesn't support PME.
+ * Zero is returned if the PME is supported and can be disabled.
+ */
+static int pci_disable_pme(struct pci_dev *dev)
+{
+ int pm;
+ u16 value;
+
+ /* find PCI PM capability in list */
+ pm = pci_find_capability(dev, PCI_CAP_ID_PM);
+
+ /* If device doesn't support PM Capabilities, it means that PME is
+ * not supported.
+ */
+ if (!pm)
+ return -EINVAL;
+ /* Check device's ability to generate PME# */
+ pci_read_config_word(dev, pm + PCI_PM_PMC, &value);
+
+ value &= PCI_PM_CAP_PME_MASK;
+ /* Check if it can generate PME# */
+ if (!value) {
+ /*
+ * If it is zero, it means that PME is still unsupported
+ * although there exists the PM capability.
+ */
+ return -EINVAL;
+ }
+
+ pci_read_config_word(dev, pm + PCI_PM_CTRL, &value);
+
+ /* Clear PME_Status by writing 1 to it */
+ value |= PCI_PM_CTRL_PME_STATUS ;
+ /* Disable PME enable bit */
+ value &= ~PCI_PM_CTRL_PME_ENABLE;
+ pci_write_config_word(dev, pm + PCI_PM_CTRL, value);
+
+ return 0;
+}
+
+int pci_cfg_space_size(struct pci_dev *dev)
+{
+ int pos;
+ u32 status;
pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
if (!pos) {
goto fail;
}
- skip:
- if (pci_read_config_dword(dev, 256, &status) != PCIBIOS_SUCCESSFUL)
- goto fail;
- if (status == 0xffffffff)
- goto fail;
-
- return PCI_CFG_SPACE_EXP_SIZE;
+ return pci_cfg_space_size_ext(dev);
fail:
return PCI_CFG_SPACE_SIZE;
}
-int pci_cfg_space_size(struct pci_dev *dev)
-{
- return pci_cfg_space_size_ext(dev, 1);
-}
-
static void pci_release_bus_bridge_dev(struct device *dev)
{
kfree(dev);
}
pci_vpd_pci22_init(dev);
+ pci_disable_pme(dev);
return dev;
}