platforms/pseries/eeh_pseries.c

46 static void pseries_eeh_init_edev(struct pci_dn *pdn);
50 	struct pci_dn *pdn = pci_get_pdn(pdev);
58 		pdn->device_id  =  pdev->device;
59 		pdn->vendor_id  =  pdev->vendor;
60 		pdn->class_code =  pdev->class;
66 		pdn->last_allow_rc =  0;
69 	pseries_eeh_init_edev(pdn);
77 		struct eeh_dev *edev = pdn_to_eeh_dev(pdn);
79 		edev->pe_config_addr =  (pdn->busno << 16) | (pdn->devfn << 8);
90  * @pdn: pci_dn of the input device
101 static int pseries_eeh_get_pe_config_addr(struct pci_dn *pdn)
103 	int config_addr = rtas_config_addr(pdn->busno, pdn->devfn, 0);
104 	struct pci_controller *phb = pdn->phb;
248 static int pseries_eeh_cap_start(struct pci_dn *pdn)
252 	if (!pdn)
255 	rtas_pci_dn_read_config(pdn, PCI_STATUS, 2, &status);
263 static int pseries_eeh_find_cap(struct pci_dn *pdn, int cap)
265 	int pos = pseries_eeh_cap_start(pdn);
273 		rtas_pci_dn_read_config(pdn, pos, 1, &pos);
277 		rtas_pci_dn_read_config(pdn, pos + PCI_CAP_LIST_ID, 1, &id);
288 static int pseries_eeh_find_ecap(struct pci_dn *pdn, int cap)
290 	struct eeh_dev *edev = pdn_to_eeh_dev(pdn);
297 	if (rtas_pci_dn_read_config(pdn, pos, 4, &header) != PCIBIOS_SUCCESSFUL)
310 		if (rtas_pci_dn_read_config(pdn, pos, 4, &header) != PCIBIOS_SUCCESSFUL)
328 	struct pci_dn *pdn = eeh_dev_to_pdn(edev);
336 		pdn = pci_get_pdn(edev->physfn);
338 		pdn = pdn ? pdn->parent : NULL;
339 	while (pdn) {
341 		parent = pdn_to_eeh_dev(pdn);
348 		pdn = pdn->parent;
357  * @pdn: PCI device node
364 static void pseries_eeh_init_edev(struct pci_dn *pdn)
375 	 * Find the eeh_dev for this pdn. The storage for the eeh_dev was
380 	edev = pdn_to_eeh_dev(pdn);
394 	if (!pdn->vendor_id || !pdn->device_id || !pdn->class_code)
398         if ((pdn->class_code >> 8) == PCI_CLASS_BRIDGE_ISA)
408 	edev->pcix_cap = pseries_eeh_find_cap(pdn, PCI_CAP_ID_PCIX);
409 	edev->pcie_cap = pseries_eeh_find_cap(pdn, PCI_CAP_ID_EXP);
410 	edev->aer_cap = pseries_eeh_find_ecap(pdn, PCI_EXT_CAP_ID_ERR);
412 	if ((pdn->class_code >> 8) == PCI_CLASS_BRIDGE_PCI) {
415 			rtas_pci_dn_read_config(pdn, edev->pcie_cap + PCI_EXP_FLAGS,
426 	ret = pseries_eeh_get_pe_config_addr(pdn);
434 	pe.phb = pdn->phb;
462 	struct pci_dn *pdn;
464 	pdn = pci_get_pdn_by_devfn(pdev->bus, pdev->devfn);
465 	if (!pdn)
472 	edev = pdn_to_eeh_dev(pdn);
481  * @pdn: PCI device node
487 void pseries_eeh_init_edev_recursive(struct pci_dn *pdn)
491 	if (!pdn)
494 	list_for_each_entry(n, &pdn->child_list, list)
497 	pseries_eeh_init_edev(pdn);
677 	struct pci_dn *pdn = eeh_dev_to_pdn(edev);
679 	return rtas_pci_dn_read_config(pdn, where, size, val);
693 	struct pci_dn *pdn = eeh_dev_to_pdn(edev);
695 	return rtas_pci_dn_write_config(pdn, where, size, val);
699 static int pseries_send_allow_unfreeze(struct pci_dn *pdn, u16 *vf_pe_array, int cur_vfs)
705 	addr = rtas_config_addr(pdn->busno, pdn->devfn, 0);
706 	buid = pdn->phb->buid;
718 			pdn->phb->global_number, addr, rc);
725 	struct pci_dn *pdn, *tmp, *parent, *physfn_pdn;
734 			pdn = eeh_dev_to_pdn(edev);
735 			parent = pdn->parent;
738 					cpu_to_be16(pdn->pe_num_map[vf_index]);
739 			rc = pseries_send_allow_unfreeze(pdn, vf_pe_array,
741 			pdn->last_allow_rc = rc;
743 				list_for_each_entry_safe(pdn, tmp,
750 					if (pdn->busno != bus ||
751 					    pdn->devfn != devfn)
753 					pdn->last_allow_rc = rc;
757 			pdn = pci_get_pdn(edev->pdev);
764 			pdn->last_allow_rc = rc;
814 	struct pci_dn *pdn;
866 			pdn = list_first_entry(&PCI_DN(phb->dn)->child_list, struct pci_dn, list);
867 			config_addr = pseries_eeh_get_pe_config_addr(pdn);