| /* |
| * File...........: linux/drivers/s390/block/dasd_3370_erp.c |
| * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> |
| * Bugreports.to..: <Linux390@de.ibm.com> |
| * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000 |
| * |
| * $Revision: 1.9 $ |
| */ |
| |
| #define PRINTK_HEADER "dasd_erp(3370)" |
| |
| #include "dasd_int.h" |
| |
| |
| /* |
| * DASD_3370_ERP_EXAMINE |
| * |
| * DESCRIPTION |
| * Checks only for fatal/no/recover error. |
| * A detailed examination of the sense data is done later outside |
| * the interrupt handler. |
| * |
| * The logic is based on the 'IBM 3880 Storage Control Reference' manual |
| * 'Chapter 7. 3370 Sense Data'. |
| * |
| * RETURN VALUES |
| * dasd_era_none no error |
| * dasd_era_fatal for all fatal (unrecoverable errors) |
| * dasd_era_recover for all others. |
| */ |
| dasd_era_t |
| dasd_3370_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb) |
| { |
| char *sense = irb->ecw; |
| |
| /* check for successful execution first */ |
| if (irb->scsw.cstat == 0x00 && |
| irb->scsw.dstat == (DEV_STAT_CHN_END | DEV_STAT_DEV_END)) |
| return dasd_era_none; |
| if (sense[0] & 0x80) { /* CMD reject */ |
| return dasd_era_fatal; |
| } |
| if (sense[0] & 0x40) { /* Drive offline */ |
| return dasd_era_recover; |
| } |
| if (sense[0] & 0x20) { /* Bus out parity */ |
| return dasd_era_recover; |
| } |
| if (sense[0] & 0x10) { /* equipment check */ |
| if (sense[1] & 0x80) { |
| return dasd_era_fatal; |
| } |
| return dasd_era_recover; |
| } |
| if (sense[0] & 0x08) { /* data check */ |
| if (sense[1] & 0x80) { |
| return dasd_era_fatal; |
| } |
| return dasd_era_recover; |
| } |
| if (sense[0] & 0x04) { /* overrun */ |
| if (sense[1] & 0x80) { |
| return dasd_era_fatal; |
| } |
| return dasd_era_recover; |
| } |
| if (sense[1] & 0x40) { /* invalid blocksize */ |
| return dasd_era_fatal; |
| } |
| if (sense[1] & 0x04) { /* file protected */ |
| return dasd_era_recover; |
| } |
| if (sense[1] & 0x01) { /* operation incomplete */ |
| return dasd_era_recover; |
| } |
| if (sense[2] & 0x80) { /* check data erroor */ |
| return dasd_era_recover; |
| } |
| if (sense[2] & 0x10) { /* Env. data present */ |
| return dasd_era_recover; |
| } |
| /* examine the 24 byte sense data */ |
| return dasd_era_recover; |
| |
| } /* END dasd_3370_erp_examine */ |
| |
| /* |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * Emacs will notice this stuff at the end of the file and automatically |
| * adjust the settings for this buffer only. This must remain at the end |
| * of the file. |
| * --------------------------------------------------------------------------- |
| * Local variables: |
| * c-indent-level: 4 |
| * c-brace-imaginary-offset: 0 |
| * c-brace-offset: -4 |
| * c-argdecl-indent: 4 |
| * c-label-offset: -4 |
| * c-continued-statement-offset: 4 |
| * c-continued-brace-offset: 0 |
| * indent-tabs-mode: 1 |
| * tab-width: 8 |
| * End: |
| */ |
