eeh_sysfs.c

Go to the documentation of this file.

/*
 * Sysfs entries for PCI Error Recovery for PAPR-compliant platform.
 * Copyright IBM Corporation 2007
 * Copyright Linas Vepstas <[email protected]> 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 <[email protected]>
 */
#include <linux/pci.h>
#include <linux/stat.h>
#include <asm/ppc-pci.h>
#include <asm/pci-bridge.h>

#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)
{
    int rc=0;

    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");
}

void eeh_sysfs_remove_device(struct pci_dev *pdev)
{
    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);
}