| /* |
| * Sysfs entries for PCI Error Recovery for PAPR-compliant platform. |
| * Copyright IBM Corporation 2007 |
| * Copyright Linas Vepstas <linas@austin.ibm.com> 2007 |
| * |
| * All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or (at |
| * your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or |
| * NON INFRINGEMENT. See the GNU General Public License for more |
| * details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| * |
| * Send comments and feedback to Linas Vepstas <linas@austin.ibm.com> |
| */ |
| #include <linux/pci.h> |
| #include <linux/stat.h> |
| #include <asm/ppc-pci.h> |
| #include <asm/pci-bridge.h> |
| |
| /** |
| * EEH_SHOW_ATTR -- Create sysfs entry for eeh statistic |
| * @_name: name of file in sysfs directory |
| * @_memb: name of member in struct pci_dn to access |
| * @_format: printf format for display |
| * |
| * All of the attributes look very similar, so just |
| * auto-gen a cut-n-paste routine to display them. |
| */ |
| #define EEH_SHOW_ATTR(_name,_memb,_format) \ |
| static ssize_t eeh_show_##_name(struct device *dev, \ |
| struct device_attribute *attr, char *buf) \ |
| { \ |
| struct pci_dev *pdev = to_pci_dev(dev); \ |
| struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev); \ |
| \ |
| if (!edev) \ |
| return 0; \ |
| \ |
| return sprintf(buf, _format "\n", edev->_memb); \ |
| } \ |
| static DEVICE_ATTR(_name, S_IRUGO, eeh_show_##_name, NULL); |
| |
| EEH_SHOW_ATTR(eeh_mode, mode, "0x%x"); |
| EEH_SHOW_ATTR(eeh_config_addr, config_addr, "0x%x"); |
| EEH_SHOW_ATTR(eeh_pe_config_addr, pe_config_addr, "0x%x"); |
| |
| void eeh_sysfs_add_device(struct pci_dev *pdev) |
| { |
| struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev); |
| int rc=0; |
| |
| if (edev && (edev->mode & EEH_DEV_SYSFS)) |
| return; |
| |
| rc += device_create_file(&pdev->dev, &dev_attr_eeh_mode); |
| rc += device_create_file(&pdev->dev, &dev_attr_eeh_config_addr); |
| rc += device_create_file(&pdev->dev, &dev_attr_eeh_pe_config_addr); |
| |
| if (rc) |
| printk(KERN_WARNING "EEH: Unable to create sysfs entries\n"); |
| else if (edev) |
| edev->mode |= EEH_DEV_SYSFS; |
| } |
| |
| void eeh_sysfs_remove_device(struct pci_dev *pdev) |
| { |
| struct eeh_dev *edev = pci_dev_to_eeh_dev(pdev); |
| |
| /* |
| * The parent directory might have been removed. We needn't |
| * continue for that case. |
| */ |
| if (!pdev->dev.kobj.sd) { |
| if (edev) |
| edev->mode &= ~EEH_DEV_SYSFS; |
| return; |
| } |
| |
| device_remove_file(&pdev->dev, &dev_attr_eeh_mode); |
| device_remove_file(&pdev->dev, &dev_attr_eeh_config_addr); |
| device_remove_file(&pdev->dev, &dev_attr_eeh_pe_config_addr); |
| |
| if (edev) |
| edev->mode &= ~EEH_DEV_SYSFS; |
| } |
