drivers/s390/block/dasd_9336_erp.c

   1 /*
   2  * File...........: linux/drivers/s390/block/dasd_9336_erp.c
   3  * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
   4  * Bugreports.to..: <Linux390@de.ibm.com>
   5  * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000
   6  *
   7  */
   8
   9 #define PRINTK_HEADER "dasd_erp(9336)"
  10
  11 #include "dasd_int.h"
  12
  13
  14 /*
  15  * DASD_9336_ERP_EXAMINE
  16  *
  17  * DESCRIPTION
  18  *   Checks only for fatal/no/recover error.
  19  *   A detailed examination of the sense data is done later outside
  20  *   the interrupt handler.
  21  *
  22  *   The logic is based on the 'IBM 3880 Storage Control Reference' manual
  23  *   'Chapter 7. 9336 Sense Data'.
  24  *
  25  * RETURN VALUES
  26  *   dasd_era_none      no error
  27  *   dasd_era_fatal     for all fatal (unrecoverable errors)
  28  *   dasd_era_recover   for all others.
  29  */
  30 dasd_era_t
  31 dasd_9336_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb)
  32 {
  33         /* check for successful execution first */
  34         if (irb->scsw.cstat == 0x00 &&
  35             irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END))
  36                 return dasd_era_none;
  37
  38         /* examine the 24 byte sense data */
  39         return dasd_era_recover;
  40
  41 }                               /* END dasd_9336_erp_examine */