void zpci_event_availability(void *data) { struct zpci_ccdf_avail *ccdf = data; struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid); struct pci_dev *pdev = zdev ? zdev->pdev : NULL; int ret; pr_info("%s: Event 0x%x reconfigured PCI function 0x%x\n", pdev ? pci_name(pdev) : "n/a", ccdf->pec, ccdf->fid); zpci_err("avail CCDF:\n"); zpci_err_hex(ccdf, sizeof(*ccdf)); switch (ccdf->pec) { case 0x0301: /* Standby -> Configured */ if (!zdev || zdev->state == ZPCI_FN_STATE_CONFIGURED) break; zdev->state = ZPCI_FN_STATE_CONFIGURED; ret = zpci_enable_device(zdev); if (ret) break; pci_rescan_bus(zdev->bus); break; case 0x0302: /* Reserved -> Standby */ clp_add_pci_device(ccdf->fid, ccdf->fh, 0); break; case 0x0303: /* Deconfiguration requested */ if (pdev) pci_stop_and_remove_bus_device(pdev); ret = zpci_disable_device(zdev); if (ret) break; ret = sclp_pci_deconfigure(zdev->fid); zpci_dbg(3, "deconf fid:%x, rc:%d\n", zdev->fid, ret); if (!ret) zdev->state = ZPCI_FN_STATE_STANDBY; break; case 0x0304: /* Configured -> Standby */ if (pdev) pci_stop_and_remove_bus_device(pdev); zpci_disable_device(zdev); zdev->state = ZPCI_FN_STATE_STANDBY; break; case 0x0306: /* 0x308 or 0x302 for multiple devices */ clp_rescan_pci_devices(); break; case 0x0308: /* Standby -> Reserved */ pci_stop_root_bus(zdev->bus); pci_remove_root_bus(zdev->bus); break; default: break; } }
int iproc_pcie_remove(struct iproc_pcie *pcie) { pci_stop_root_bus(pcie->root_bus); pci_remove_root_bus(pcie->root_bus); phy_power_off(pcie->phy); phy_exit(pcie->phy); return 0; }
static void __zpci_event_availability(struct zpci_ccdf_avail *ccdf) { struct zpci_dev *zdev = get_zdev_by_fid(ccdf->fid); struct pci_dev *pdev = NULL; int ret; if (zdev) pdev = pci_get_slot(zdev->bus, ZPCI_DEVFN); pr_info("%s: Event 0x%x reconfigured PCI function 0x%x\n", pdev ? pci_name(pdev) : "n/a", ccdf->pec, ccdf->fid); zpci_err("avail CCDF:\n"); zpci_err_hex(ccdf, sizeof(*ccdf)); switch (ccdf->pec) { case 0x0301: /* Reserved|Standby -> Configured */ if (!zdev) { ret = clp_add_pci_device(ccdf->fid, ccdf->fh, 0); if (ret) break; zdev = get_zdev_by_fid(ccdf->fid); } if (!zdev || zdev->state != ZPCI_FN_STATE_STANDBY) break; zdev->state = ZPCI_FN_STATE_CONFIGURED; zdev->fh = ccdf->fh; ret = zpci_enable_device(zdev); if (ret) break; pci_lock_rescan_remove(); pci_rescan_bus(zdev->bus); pci_unlock_rescan_remove(); break; case 0x0302: /* Reserved -> Standby */ if (!zdev) clp_add_pci_device(ccdf->fid, ccdf->fh, 0); break; case 0x0303: /* Deconfiguration requested */ if (pdev) pci_stop_and_remove_bus_device_locked(pdev); ret = zpci_disable_device(zdev); if (ret) break; ret = sclp_pci_deconfigure(zdev->fid); zpci_dbg(3, "deconf fid:%x, rc:%d\n", zdev->fid, ret); if (!ret) zdev->state = ZPCI_FN_STATE_STANDBY; break; case 0x0304: /* Configured -> Standby */ if (pdev) { /* Give the driver a hint that the function is * already unusable. */ pdev->error_state = pci_channel_io_perm_failure; pci_stop_and_remove_bus_device_locked(pdev); } zdev->fh = ccdf->fh; zpci_disable_device(zdev); zdev->state = ZPCI_FN_STATE_STANDBY; break; case 0x0306: /* 0x308 or 0x302 for multiple devices */ clp_rescan_pci_devices(); break; case 0x0308: /* Standby -> Reserved */ if (!zdev) break; pci_stop_root_bus(zdev->bus); pci_remove_root_bus(zdev->bus); break; default: break; } if (pdev) pci_dev_put(pdev); }
int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res) { int ret; void *sysdata; struct pci_bus *bus; if (!pcie || !pcie->dev || !pcie->base) return -EINVAL; ret = phy_init(pcie->phy); if (ret) { dev_err(pcie->dev, "unable to initialize PCIe PHY\n"); return ret; } ret = phy_power_on(pcie->phy); if (ret) { dev_err(pcie->dev, "unable to power on PCIe PHY\n"); goto err_exit_phy; } iproc_pcie_reset(pcie); #ifdef CONFIG_ARM pcie->sysdata.private_data = pcie; sysdata = &pcie->sysdata; #else sysdata = pcie; #endif bus = pci_create_root_bus(pcie->dev, 0, &iproc_pcie_ops, sysdata, res); if (!bus) { dev_err(pcie->dev, "unable to create PCI root bus\n"); ret = -ENOMEM; goto err_power_off_phy; } pcie->root_bus = bus; ret = iproc_pcie_check_link(pcie, bus); if (ret) { dev_err(pcie->dev, "no PCIe EP device detected\n"); goto err_rm_root_bus; } iproc_pcie_enable(pcie); pci_scan_child_bus(bus); pci_assign_unassigned_bus_resources(bus); #ifdef CONFIG_ARM pci_fixup_irqs(pci_common_swizzle, pcie->map_irq); #endif pci_bus_add_devices(bus); return 0; err_rm_root_bus: pci_stop_root_bus(bus); pci_remove_root_bus(bus); err_power_off_phy: phy_power_off(pcie->phy); err_exit_phy: phy_exit(pcie->phy); return ret; }
int iproc_pcie_setup(struct iproc_pcie *pcie, struct list_head *res) { struct device *dev; int ret; void *sysdata; struct pci_bus *bus; dev = pcie->dev; ret = devm_request_pci_bus_resources(dev, res); if (ret) return ret; ret = phy_init(pcie->phy); if (ret) { dev_err(dev, "unable to initialize PCIe PHY\n"); return ret; } ret = phy_power_on(pcie->phy); if (ret) { dev_err(dev, "unable to power on PCIe PHY\n"); goto err_exit_phy; } switch (pcie->type) { case IPROC_PCIE_PAXB: pcie->reg_offsets = iproc_pcie_reg_paxb; break; case IPROC_PCIE_PAXC: pcie->reg_offsets = iproc_pcie_reg_paxc; break; default: dev_err(dev, "incompatible iProc PCIe interface\n"); ret = -EINVAL; goto err_power_off_phy; } iproc_pcie_reset(pcie); if (pcie->need_ob_cfg) { ret = iproc_pcie_map_ranges(pcie, res); if (ret) { dev_err(dev, "map failed\n"); goto err_power_off_phy; } } #ifdef CONFIG_ARM pcie->sysdata.private_data = pcie; sysdata = &pcie->sysdata; #else sysdata = pcie; #endif bus = pci_create_root_bus(dev, 0, &iproc_pcie_ops, sysdata, res); if (!bus) { dev_err(dev, "unable to create PCI root bus\n"); ret = -ENOMEM; goto err_power_off_phy; } pcie->root_bus = bus; ret = iproc_pcie_check_link(pcie, bus); if (ret) { dev_err(dev, "no PCIe EP device detected\n"); goto err_rm_root_bus; } iproc_pcie_enable(pcie); if (IS_ENABLED(CONFIG_PCI_MSI)) if (iproc_pcie_msi_enable(pcie)) dev_info(dev, "not using iProc MSI\n"); pci_scan_child_bus(bus); pci_assign_unassigned_bus_resources(bus); pci_fixup_irqs(pci_common_swizzle, pcie->map_irq); pci_bus_add_devices(bus); return 0; err_rm_root_bus: pci_stop_root_bus(bus); pci_remove_root_bus(bus); err_power_off_phy: phy_power_off(pcie->phy); err_exit_phy: phy_exit(pcie->phy); return ret; }