1/* 2 * Sysfs entries for PCI Error Recovery for PAPR-compliant platform. 3 * Copyright IBM Corporation 2007 4 * Copyright Linas Vepstas <linas@austin.ibm.com> 2007 5 * 6 * All rights reserved. 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or (at 11 * your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or 16 * NON INFRINGEMENT. See the GNU General Public License for more 17 * details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 22 * 23 * Send comments and feedback to Linas Vepstas <linas@austin.ibm.com> 24 */ 25#include <linux/pci.h> 26#include <asm/ppc-pci.h> 27#include <asm/pci-bridge.h> 28#include <linux/kobject.h> 29 30/** 31 * EEH_SHOW_ATTR -- create sysfs entry for eeh statistic 32 * @_name: name of file in sysfs directory 33 * @_memb: name of member in struct pci_dn to access 34 * @_format: printf format for display 35 * 36 * All of the attributes look very similar, so just 37 * auto-gen a cut-n-paste routine to display them. 38 */ 39#define EEH_SHOW_ATTR(_name,_memb,_format) \ 40static ssize_t eeh_show_##_name(struct device *dev, \ 41 struct device_attribute *attr, char *buf) \ 42{ \ 43 struct pci_dev *pdev = to_pci_dev(dev); \ 44 struct device_node *dn = pci_device_to_OF_node(pdev); \ 45 struct pci_dn *pdn; \ 46 \ 47 if (!dn || PCI_DN(dn) == NULL) \ 48 return 0; \ 49 \ 50 pdn = PCI_DN(dn); \ 51 return sprintf(buf, _format "\n", pdn->_memb); \ 52} \ 53static DEVICE_ATTR(_name, S_IRUGO, eeh_show_##_name, NULL); 54 55 56EEH_SHOW_ATTR(eeh_mode, eeh_mode, "0x%x"); 57EEH_SHOW_ATTR(eeh_config_addr, eeh_config_addr, "0x%x"); 58EEH_SHOW_ATTR(eeh_pe_config_addr, eeh_pe_config_addr, "0x%x"); 59EEH_SHOW_ATTR(eeh_check_count, eeh_check_count, "%d"); 60EEH_SHOW_ATTR(eeh_freeze_count, eeh_freeze_count, "%d"); 61EEH_SHOW_ATTR(eeh_false_positives, eeh_false_positives, "%d"); 62 63void eeh_sysfs_add_device(struct pci_dev *pdev) 64{ 65 int rc=0; 66 67 rc += device_create_file(&pdev->dev, &dev_attr_eeh_mode); 68 rc += device_create_file(&pdev->dev, &dev_attr_eeh_config_addr); 69 rc += device_create_file(&pdev->dev, &dev_attr_eeh_pe_config_addr); 70 rc += device_create_file(&pdev->dev, &dev_attr_eeh_check_count); 71 rc += device_create_file(&pdev->dev, &dev_attr_eeh_false_positives); 72 rc += device_create_file(&pdev->dev, &dev_attr_eeh_freeze_count); 73 74 if (rc) 75 printk(KERN_WARNING "EEH: Unable to create sysfs entries\n"); 76} 77 78void eeh_sysfs_remove_device(struct pci_dev *pdev) 79{ 80 device_remove_file(&pdev->dev, &dev_attr_eeh_mode); 81 device_remove_file(&pdev->dev, &dev_attr_eeh_config_addr); 82 device_remove_file(&pdev->dev, &dev_attr_eeh_pe_config_addr); 83 device_remove_file(&pdev->dev, &dev_attr_eeh_check_count); 84 device_remove_file(&pdev->dev, &dev_attr_eeh_false_positives); 85 device_remove_file(&pdev->dev, &dev_attr_eeh_freeze_count); 86} 87