diff options
Diffstat (limited to 'drivers/pci/probe.c')
| -rw-r--r-- | drivers/pci/probe.c | 51 |
1 files changed, 45 insertions, 6 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 0ce98e18b5a8..41183aed8f5d 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -650,9 +650,26 @@ static void pci_release_host_bridge_dev(struct device *dev) pci_free_resource_list(&bridge->windows); pci_free_resource_list(&bridge->dma_ranges); + + /* Host bridges only have domain_nr set in the emulation case */ + if (bridge->domain_nr != PCI_DOMAIN_NR_NOT_SET) + pci_bus_release_emul_domain_nr(bridge->domain_nr); + kfree(bridge); } +static const struct attribute_group *pci_host_bridge_groups[] = { +#ifdef CONFIG_PCI_IDE + &pci_ide_attr_group, +#endif + NULL +}; + +static const struct device_type pci_host_bridge_type = { + .groups = pci_host_bridge_groups, + .release = pci_release_host_bridge_dev, +}; + static void pci_init_host_bridge(struct pci_host_bridge *bridge) { INIT_LIST_HEAD(&bridge->windows); @@ -672,6 +689,8 @@ static void pci_init_host_bridge(struct pci_host_bridge *bridge) bridge->native_dpc = 1; bridge->domain_nr = PCI_DOMAIN_NR_NOT_SET; bridge->native_cxl_error = 1; + bridge->dev.type = &pci_host_bridge_type; + pci_ide_init_host_bridge(bridge); device_initialize(&bridge->dev); } @@ -685,7 +704,6 @@ struct pci_host_bridge *pci_alloc_host_bridge(size_t priv) return NULL; pci_init_host_bridge(bridge); - bridge->dev.release = pci_release_host_bridge_dev; return bridge; } @@ -1130,7 +1148,8 @@ unregister: device_del(&bridge->dev); free: #ifdef CONFIG_PCI_DOMAINS_GENERIC - pci_bus_release_domain_nr(parent, bus->domain_nr); + if (bridge->domain_nr == PCI_DOMAIN_NR_NOT_SET) + pci_bus_release_domain_nr(parent, bus->domain_nr); #endif if (bus_registered) put_device(&bus->dev); @@ -1656,6 +1675,13 @@ void set_pcie_port_type(struct pci_dev *pdev) if (reg32 & PCI_EXP_LNKCAP_DLLLARC) pdev->link_active_reporting = 1; +#ifdef CONFIG_PCIEASPM + if (reg32 & PCI_EXP_LNKCAP_ASPM_L0S) + pdev->aspm_l0s_support = 1; + if (reg32 & PCI_EXP_LNKCAP_ASPM_L1) + pdev->aspm_l1_support = 1; +#endif + parent = pci_upstream_bridge(pdev); if (!parent) return; @@ -2283,6 +2309,17 @@ int pci_configure_extended_tags(struct pci_dev *dev, void *ign) return 0; } +static void pci_dev3_init(struct pci_dev *pdev) +{ + u16 cap = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_DEV3); + u32 val = 0; + + if (!cap) + return; + pci_read_config_dword(pdev, cap + PCI_DEV3_STA, &val); + pdev->fm_enabled = !!(val & PCI_DEV3_STA_SEGMENT); +} + /** * pcie_relaxed_ordering_enabled - Probe for PCIe relaxed ordering enable * @dev: PCI device to query @@ -2667,6 +2704,8 @@ static void pci_init_capabilities(struct pci_dev *dev) pci_doe_init(dev); /* Data Object Exchange */ pci_tph_init(dev); /* TLP Processing Hints */ pci_rebar_init(dev); /* Resizable BAR */ + pci_dev3_init(dev); /* Device 3 capabilities */ + pci_ide_init(dev); /* Link Integrity and Data Encryption */ pcie_report_downtraining(dev); pci_init_reset_methods(dev); @@ -2740,8 +2779,6 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus) pci_reassigndev_resource_alignment(dev); - dev->state_saved = false; - pci_init_capabilities(dev); /* @@ -2762,6 +2799,9 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus) ret = device_add(&dev->dev); WARN_ON(ret < 0); + /* Establish pdev->tsm for newly added (e.g. new SR-IOV VFs) */ + pci_tsm_init(dev); + pci_npem_create(dev); pci_doe_sysfs_init(dev); @@ -3163,8 +3203,7 @@ static unsigned int pci_scan_child_bus_extend(struct pci_bus *bus, * bus number if there is room. */ if (bus->self && bus->self->is_hotplug_bridge) { - used_buses = max_t(unsigned int, available_buses, - pci_hotplug_bus_size - 1); + used_buses = max(available_buses, pci_hotplug_bus_size - 1); if (max - start < used_buses) { max = start + used_buses; |