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powerpc/eeh: Rename eeh_{add_to|remove_from}_parent_pe()
The naming of eeh_{add_to|remove_from}_parent_pe() doesn't really reflect what they actually do. If the PE referred to be edev->pe_config_addr already exists under that PHB then the edev is added to that PE. However, if the PE doesn't exist the a new one is created for the edev. The bulk of the implementation of eeh_add_to_parent_pe() covers that second case. Similarly, most of eeh_remove_from_parent_pe() is determining when it's safe to delete a PE. Signed-off-by: Oliver O'Halloran <oohall@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200725081231.39076-12-oohall@gmail.com
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@ -283,8 +283,8 @@ struct eeh_pe *eeh_phb_pe_get(struct pci_controller *phb);
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struct eeh_pe *eeh_pe_next(struct eeh_pe *pe, struct eeh_pe *root);
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struct eeh_pe *eeh_pe_get(struct pci_controller *phb,
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int pe_no, int config_addr);
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int eeh_add_to_parent_pe(struct eeh_dev *edev);
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int eeh_rmv_from_parent_pe(struct eeh_dev *edev);
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int eeh_pe_tree_insert(struct eeh_dev *edev);
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int eeh_pe_tree_remove(struct eeh_dev *edev);
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void eeh_pe_update_time_stamp(struct eeh_pe *pe);
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void *eeh_pe_traverse(struct eeh_pe *root,
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eeh_pe_traverse_func fn, void *flag);
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@ -1107,7 +1107,7 @@ void eeh_probe_device(struct pci_dev *dev)
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* FIXME: HEY MA, LOOK AT ME, NO LOCKING!
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*/
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if (edev->pdev && edev->pdev != dev) {
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eeh_rmv_from_parent_pe(edev);
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eeh_pe_tree_remove(edev);
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eeh_addr_cache_rmv_dev(edev->pdev);
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eeh_sysfs_remove_device(edev->pdev);
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@ -1186,7 +1186,7 @@ void eeh_remove_device(struct pci_dev *dev)
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edev->in_error = false;
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dev->dev.archdata.edev = NULL;
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if (!(edev->pe->state & EEH_PE_KEEP))
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eeh_rmv_from_parent_pe(edev);
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eeh_pe_tree_remove(edev);
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else
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edev->mode |= EEH_DEV_DISCONNECTED;
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}
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@ -542,7 +542,7 @@ static void *eeh_pe_detach_dev(struct eeh_pe *pe, void *userdata)
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continue;
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edev->mode &= ~(EEH_DEV_DISCONNECTED | EEH_DEV_IRQ_DISABLED);
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eeh_rmv_from_parent_pe(edev);
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eeh_pe_tree_remove(edev);
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}
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return NULL;
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@ -356,7 +356,7 @@ static struct eeh_pe *eeh_pe_get_parent(struct eeh_dev *edev)
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}
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/**
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* eeh_add_to_parent_pe - Add EEH device to parent PE
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* eeh_pe_tree_insert - Add EEH device to parent PE
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* @edev: EEH device
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*
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* Add EEH device to the parent PE. If the parent PE already
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@ -364,7 +364,7 @@ static struct eeh_pe *eeh_pe_get_parent(struct eeh_dev *edev)
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* we have to create new PE to hold the EEH device and the new
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* PE will be linked to its parent PE as well.
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*/
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int eeh_add_to_parent_pe(struct eeh_dev *edev)
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int eeh_pe_tree_insert(struct eeh_dev *edev)
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{
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struct eeh_pe *pe, *parent;
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struct pci_dn *pdn = eeh_dev_to_pdn(edev);
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@ -459,7 +459,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
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}
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/**
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* eeh_rmv_from_parent_pe - Remove one EEH device from the associated PE
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* eeh_pe_tree_remove - Remove one EEH device from the associated PE
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* @edev: EEH device
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*
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* The PE hierarchy tree might be changed when doing PCI hotplug.
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@ -467,7 +467,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
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* during EEH recovery. So we have to call the function remove the
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* corresponding PE accordingly if necessary.
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*/
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int eeh_rmv_from_parent_pe(struct eeh_dev *edev)
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int eeh_pe_tree_remove(struct eeh_dev *edev)
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{
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struct eeh_pe *pe, *parent, *child;
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bool keep, recover;
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@ -263,7 +263,7 @@ void remove_sriov_vf_pdns(struct pci_dev *pdev)
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* have a configured PE.
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*/
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if (edev->pe)
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eeh_rmv_from_parent_pe(edev);
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eeh_pe_tree_remove(edev);
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pdn->edev = NULL;
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kfree(edev);
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@ -399,7 +399,7 @@ static struct eeh_dev *pnv_eeh_probe(struct pci_dev *pdev)
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edev->pe_config_addr = phb->ioda.pe_rmap[config_addr];
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/* Create PE */
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ret = eeh_add_to_parent_pe(edev);
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ret = eeh_pe_tree_insert(edev);
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if (ret) {
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eeh_edev_warn(edev, "Failed to add device to PE (code %d)\n", ret);
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return NULL;
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@ -72,8 +72,8 @@ void pseries_pcibios_bus_add_device(struct pci_dev *pdev)
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struct eeh_dev *edev = pdn_to_eeh_dev(pdn);
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edev->pe_config_addr = (pdn->busno << 16) | (pdn->devfn << 8);
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eeh_rmv_from_parent_pe(edev); /* Remove as it is adding to bus pe */
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eeh_add_to_parent_pe(edev); /* Add as VF PE type */
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eeh_pe_tree_remove(edev); /* Remove as it is adding to bus pe */
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eeh_pe_tree_insert(edev); /* Add as VF PE type */
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}
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#endif
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eeh_probe_device(pdev);
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@ -482,14 +482,14 @@ void pseries_eeh_init_edev(struct pci_dn *pdn)
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if (enable) {
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eeh_add_flag(EEH_ENABLED);
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eeh_add_to_parent_pe(edev);
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eeh_pe_tree_insert(edev);
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} else if (pdn->parent && pdn_to_eeh_dev(pdn->parent) &&
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(pdn_to_eeh_dev(pdn->parent))->pe) {
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/* This device doesn't support EEH, but it may have an
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* EEH parent, in which case we mark it as supported.
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*/
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edev->pe_config_addr = pdn_to_eeh_dev(pdn->parent)->pe_config_addr;
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eeh_add_to_parent_pe(edev);
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eeh_pe_tree_insert(edev);
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}
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eeh_edev_dbg(edev, "EEH is %s on device (code %d)\n",
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(enable ? "enabled" : "unsupported"), ret);
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