include/asm-powerpc/eeh_event.h

   1 /*
   2  *      eeh_event.h
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  17  *
  18  * Copyright (c) 2005 Linas Vepstas <linas@linas.org>
  19  */
  20
  21 #ifndef ASM_PPC64_EEH_EVENT_H
  22 #define ASM_PPC64_EEH_EVENT_H
  23 #ifdef __KERNEL__
  24
  25 /** EEH event -- structure holding pci controller data that describes
  26  *  a change in the isolation status of a PCI slot.  A pointer
  27  *  to this struct is passed as the data pointer in a notify callback.
  28  */
  29 struct eeh_event {
  30         struct list_head     list;
  31         struct device_node      *dn;   /* struct device node */
  32         struct pci_dev       *dev;  /* affected device */
  33         enum pci_channel_state state; /* PCI bus state for the affected device */
  34         int time_unavail;    /* milliseconds until device might be available */
  35 };
  36
  37 /**
  38  * eeh_send_failure_event - generate a PCI error event
  39  * @dev pci device
  40  *
  41  * This routine builds a PCI error event which will be delivered
  42  * to all listeners on the peh_notifier_chain.
  43  *
  44  * This routine can be called within an interrupt context;
  45  * the actual event will be delivered in a normal context
  46  * (from a workqueue).
  47  */
  48 int eeh_send_failure_event (struct device_node *dn,
  49                             struct pci_dev *dev,
  50                             enum pci_channel_state state,
  51                             int time_unavail);
  52
  53 /* Main recovery function */
  54 void handle_eeh_events (struct eeh_event *);
  55
  56 #endif /* __KERNEL__ */
  57 #endif /* ASM_PPC64_EEH_EVENT_H */