LXR linux/drivers/edac/edac

   1/*
   2 * common EDAC components that must be in kernel
   3 *
   4 * Author: Dave Jiang <djiang@mvista.com>
   5 *
   6 * 2007 (c) MontaVista Software, Inc. This file is licensed under
   7 * the terms of the GNU General Public License version 2. This program
   8 * is licensed "as is" without any warranty of any kind, whether express
   9 * or implied.
  10 *
  11 */
  12#include <linux/module.h>
  13#include <linux/edac.h>
  14#include <asm/atomic.h>
  15#include <asm/edac.h>
  16
  17int edac_op_state = EDAC_OPSTATE_INVAL;
  18EXPORT_SYMBOL_GPL(edac_op_state);
  19
  20atomic_t edac_handlers = ATOMIC_INIT(0);
  21EXPORT_SYMBOL_GPL(edac_handlers);
  22
  23int edac_err_assert = 0;
  24EXPORT_SYMBOL_GPL(edac_err_assert);
  25
  26/*
  27 * called to determine if there is an EDAC driver interested in
  28 * knowing an event (such as NMI) occurred
  29 */
  30int edac_handler_set(void)
  31{
  32        if (edac_op_state == EDAC_OPSTATE_POLL)
  33                return 0;
  34
  35        return atomic_read(&edac_handlers);
  36}
  37EXPORT_SYMBOL_GPL(edac_handler_set);
  38
  39/*
  40 * handler for NMI type of interrupts to assert error
  41 */
  42void edac_atomic_assert_error(void)
  43{
  44        edac_err_assert++;
  45}
  46EXPORT_SYMBOL_GPL(edac_atomic_assert_error);
  47