diff options
Diffstat (limited to 'drivers/s390/block/dasd_3990_erp.c')
| -rw-r--r-- | drivers/s390/block/dasd_3990_erp.c | 189 |
1 files changed, 85 insertions, 104 deletions
diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c index 2ed51562319e..669805d4402d 100644 --- a/drivers/s390/block/dasd_3990_erp.c +++ b/drivers/s390/block/dasd_3990_erp.c @@ -1,6 +1,6 @@ -/* +/* * File...........: linux/drivers/s390/block/dasd_3990_erp.c - * Author(s)......: Horst Hummel <Horst.Hummel@de.ibm.com> + * Author(s)......: Horst Hummel <Horst.Hummel@de.ibm.com> * Holger Smolinski <Holger.Smolinski@de.ibm.com> * Bugreports.to..: <Linux390@de.ibm.com> * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000, 2001 @@ -25,23 +25,23 @@ struct DCTL_data { } __attribute__ ((packed)); /* - ***************************************************************************** + ***************************************************************************** * SECTION ERP EXAMINATION - ***************************************************************************** + ***************************************************************************** */ /* - * DASD_3990_ERP_EXAMINE_24 + * DASD_3990_ERP_EXAMINE_24 * * DESCRIPTION - * Checks only for fatal (unrecoverable) error. + * Checks only for fatal (unrecoverable) error. * A detailed examination of the sense data is done later outside * the interrupt handler. * * Each bit configuration leading to an action code 2 (Exit with * programming error or unusual condition indication) * are handled as fatal errorīs. - * + * * All other configurations are handled as recoverable errors. * * RETURN VALUES @@ -93,15 +93,15 @@ dasd_3990_erp_examine_24(struct dasd_ccw_req * cqr, char *sense) } /* END dasd_3990_erp_examine_24 */ /* - * DASD_3990_ERP_EXAMINE_32 + * DASD_3990_ERP_EXAMINE_32 * * DESCRIPTION - * Checks only for fatal/no/recoverable error. + * Checks only for fatal/no/recoverable error. * A detailed examination of the sense data is done later outside * the interrupt handler. * * RETURN VALUES - * dasd_era_none no error + * dasd_era_none no error * dasd_era_fatal for all fatal (unrecoverable errors) * dasd_era_recover for recoverable others. */ @@ -128,10 +128,10 @@ dasd_3990_erp_examine_32(struct dasd_ccw_req * cqr, char *sense) } /* end dasd_3990_erp_examine_32 */ /* - * DASD_3990_ERP_EXAMINE + * DASD_3990_ERP_EXAMINE * * DESCRIPTION - * Checks only for fatal/no/recover error. + * Checks only for fatal/no/recover error. * A detailed examination of the sense data is done later outside * the interrupt handler. * @@ -139,7 +139,7 @@ dasd_3990_erp_examine_32(struct dasd_ccw_req * cqr, char *sense) * 'Chapter 7. Error Recovery Procedures'. * * RETURN VALUES - * dasd_era_none no error + * dasd_era_none no error * dasd_era_fatal for all fatal (unrecoverable errors) * dasd_era_recover for all others. */ @@ -178,18 +178,18 @@ dasd_3990_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb) } /* END dasd_3990_erp_examine */ /* - ***************************************************************************** + ***************************************************************************** * SECTION ERP HANDLING - ***************************************************************************** + ***************************************************************************** */ /* - ***************************************************************************** + ***************************************************************************** * 24 and 32 byte sense ERP functions - ***************************************************************************** + ***************************************************************************** */ /* - * DASD_3990_ERP_CLEANUP + * DASD_3990_ERP_CLEANUP * * DESCRIPTION * Removes the already build but not necessary ERP request and sets @@ -197,10 +197,10 @@ dasd_3990_erp_examine(struct dasd_ccw_req * cqr, struct irb * irb) * * PARAMETER * erp request to be blocked - * final_status either DASD_CQR_DONE or DASD_CQR_FAILED + * final_status either DASD_CQR_DONE or DASD_CQR_FAILED * * RETURN VALUES - * cqr original cqr + * cqr original cqr */ static struct dasd_ccw_req * dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status) @@ -214,7 +214,7 @@ dasd_3990_erp_cleanup(struct dasd_ccw_req * erp, char final_status) } /* end dasd_3990_erp_cleanup */ /* - * DASD_3990_ERP_BLOCK_QUEUE + * DASD_3990_ERP_BLOCK_QUEUE * * DESCRIPTION * Block the given device request queue to prevent from further @@ -237,7 +237,7 @@ dasd_3990_erp_block_queue(struct dasd_ccw_req * erp, int expires) } /* - * DASD_3990_ERP_INT_REQ + * DASD_3990_ERP_INT_REQ * * DESCRIPTION * Handles 'Intervention Required' error. @@ -277,7 +277,7 @@ dasd_3990_erp_int_req(struct dasd_ccw_req * erp) } /* end dasd_3990_erp_int_req */ /* - * DASD_3990_ERP_ALTERNATE_PATH + * DASD_3990_ERP_ALTERNATE_PATH * * DESCRIPTION * Repeat the operation on a different channel path. @@ -330,15 +330,15 @@ dasd_3990_erp_alternate_path(struct dasd_ccw_req * erp) * DASD_3990_ERP_DCTL * * DESCRIPTION - * Setup cqr to do the Diagnostic Control (DCTL) command with an + * Setup cqr to do the Diagnostic Control (DCTL) command with an * Inhibit Write subcommand (0x20) and the given modifier. * * PARAMETER * erp pointer to the current (failed) ERP * modifier subcommand modifier - * + * * RETURN VALUES - * dctl_cqr pointer to NEW dctl_cqr + * dctl_cqr pointer to NEW dctl_cqr * */ static struct dasd_ccw_req * @@ -386,7 +386,7 @@ dasd_3990_erp_DCTL(struct dasd_ccw_req * erp, char modifier) } /* end dasd_3990_erp_DCTL */ /* - * DASD_3990_ERP_ACTION_1 + * DASD_3990_ERP_ACTION_1 * * DESCRIPTION * Setup ERP to do the ERP action 1 (see Reference manual). @@ -415,7 +415,7 @@ dasd_3990_erp_action_1(struct dasd_ccw_req * erp) } /* end dasd_3990_erp_action_1 */ /* - * DASD_3990_ERP_ACTION_4 + * DASD_3990_ERP_ACTION_4 * * DESCRIPTION * Setup ERP to do the ERP action 4 (see Reference manual). @@ -453,11 +453,11 @@ dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense) if (sense[25] == 0x1D) { /* state change pending */ - DEV_MESSAGE(KERN_INFO, device, + DEV_MESSAGE(KERN_INFO, device, "waiting for state change pending " "interrupt, %d retries left", erp->retries); - + dasd_3990_erp_block_queue(erp, 30*HZ); } else if (sense[25] == 0x1E) { /* busy */ @@ -469,9 +469,9 @@ dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense) } else { /* no state change pending - retry */ - DEV_MESSAGE (KERN_INFO, device, + DEV_MESSAGE (KERN_INFO, device, "redriving request immediately, " - "%d retries left", + "%d retries left", erp->retries); erp->status = DASD_CQR_QUEUED; } @@ -482,13 +482,13 @@ dasd_3990_erp_action_4(struct dasd_ccw_req * erp, char *sense) } /* end dasd_3990_erp_action_4 */ /* - ***************************************************************************** + ***************************************************************************** * 24 byte sense ERP functions (only) - ***************************************************************************** + ***************************************************************************** */ /* - * DASD_3990_ERP_ACTION_5 + * DASD_3990_ERP_ACTION_5 * * DESCRIPTION * Setup ERP to do the ERP action 5 (see Reference manual). @@ -523,7 +523,7 @@ dasd_3990_erp_action_5(struct dasd_ccw_req * erp) * * PARAMETER * sense current sense data - * + * * RETURN VALUES * void */ @@ -1150,9 +1150,9 @@ dasd_3990_handle_env_data(struct dasd_ccw_req * erp, char *sense) * PARAMETER * erp current erp_head * sense current sense data - * + * * RETURN VALUES - * erp 'new' erp_head - pointer to new ERP + * erp 'new' erp_head - pointer to new ERP */ static struct dasd_ccw_req * dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense) @@ -1185,7 +1185,7 @@ dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense) } /* end dasd_3990_erp_com_rej */ /* - * DASD_3990_ERP_BUS_OUT + * DASD_3990_ERP_BUS_OUT * * DESCRIPTION * Handles 24 byte 'Bus Out Parity Check' error. @@ -1483,7 +1483,7 @@ dasd_3990_erp_env_data(struct dasd_ccw_req * erp, char *sense) * * PARAMETER * erp already added default ERP - * + * * RETURN VALUES * erp new erp_head - pointer to new ERP */ @@ -1527,11 +1527,11 @@ dasd_3990_erp_file_prot(struct dasd_ccw_req * erp) } /* end dasd_3990_erp_file_prot */ /* - * DASD_3990_ERP_INSPECT_24 + * DASD_3990_ERP_INSPECT_24 * * DESCRIPTION * Does a detailed inspection of the 24 byte sense data - * and sets up a related error recovery action. + * and sets up a related error recovery action. * * PARAMETER * sense sense data of the actual error @@ -1602,13 +1602,13 @@ dasd_3990_erp_inspect_24(struct dasd_ccw_req * erp, char *sense) } /* END dasd_3990_erp_inspect_24 */ /* - ***************************************************************************** + ***************************************************************************** * 32 byte sense ERP functions (only) - ***************************************************************************** + ***************************************************************************** */ /* - * DASD_3990_ERPACTION_10_32 + * DASD_3990_ERPACTION_10_32 * * DESCRIPTION * Handles 32 byte 'Action 10' of Single Program Action Codes. @@ -1616,7 +1616,7 @@ dasd_3990_erp_inspect_24(struct dasd_ccw_req * erp, char *sense) * * PARAMETER * erp current erp_head - * sense current sense data + * sense current sense data * RETURN VALUES * erp modified erp_head */ @@ -1640,18 +1640,18 @@ dasd_3990_erp_action_10_32(struct dasd_ccw_req * erp, char *sense) * * DESCRIPTION * Handles 32 byte 'Action 1B' of Single Program Action Codes. - * A write operation could not be finished because of an unexpected + * A write operation could not be finished because of an unexpected * condition. - * The already created 'default erp' is used to get the link to - * the erp chain, but it can not be used for this recovery + * The already created 'default erp' is used to get the link to + * the erp chain, but it can not be used for this recovery * action because it contains no DE/LO data space. * * PARAMETER * default_erp already added default erp. - * sense current sense data + * sense current sense data * * RETURN VALUES - * erp new erp or + * erp new erp or * default_erp in case of imprecise ending or error */ static struct dasd_ccw_req * @@ -1789,16 +1789,16 @@ dasd_3990_erp_action_1B_32(struct dasd_ccw_req * default_erp, char *sense) * DASD_3990_UPDATE_1B * * DESCRIPTION - * Handles the update to the 32 byte 'Action 1B' of Single Program + * Handles the update to the 32 byte 'Action 1B' of Single Program * Action Codes in case the first action was not successful. * The already created 'previous_erp' is the currently not successful - * ERP. + * ERP. * * PARAMETER * previous_erp already created previous erp. - * sense current sense data + * sense current sense data * RETURN VALUES - * erp modified erp + * erp modified erp */ static struct dasd_ccw_req * dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense) @@ -1897,7 +1897,7 @@ dasd_3990_update_1B(struct dasd_ccw_req * previous_erp, char *sense) } /* end dasd_3990_update_1B */ /* - * DASD_3990_ERP_COMPOUND_RETRY + * DASD_3990_ERP_COMPOUND_RETRY * * DESCRIPTION * Handles the compound ERP action retry code. @@ -1943,7 +1943,7 @@ dasd_3990_erp_compound_retry(struct dasd_ccw_req * erp, char *sense) } /* end dasd_3990_erp_compound_retry */ /* - * DASD_3990_ERP_COMPOUND_PATH + * DASD_3990_ERP_COMPOUND_PATH * * DESCRIPTION * Handles the compound ERP action for retry on alternate @@ -1965,7 +1965,7 @@ dasd_3990_erp_compound_path(struct dasd_ccw_req * erp, char *sense) dasd_3990_erp_alternate_path(erp); if (erp->status == DASD_CQR_FAILED) { - /* reset the lpm and the status to be able to + /* reset the lpm and the status to be able to * try further actions. */ erp->lpm = 0; @@ -1980,7 +1980,7 @@ dasd_3990_erp_compound_path(struct dasd_ccw_req * erp, char *sense) } /* end dasd_3990_erp_compound_path */ /* - * DASD_3990_ERP_COMPOUND_CODE + * DASD_3990_ERP_COMPOUND_CODE * * DESCRIPTION * Handles the compound ERP action for retry code. @@ -2001,18 +2001,18 @@ dasd_3990_erp_compound_code(struct dasd_ccw_req * erp, char *sense) switch (sense[28]) { case 0x17: - /* issue a Diagnostic Control command with an + /* issue a Diagnostic Control command with an * Inhibit Write subcommand and controler modifier */ erp = dasd_3990_erp_DCTL(erp, 0x20); break; - + case 0x25: /* wait for 5 seconds and retry again */ erp->retries = 1; - + dasd_3990_erp_block_queue (erp, 5*HZ); break; - + default: /* should not happen - continue */ break; @@ -2026,7 +2026,7 @@ dasd_3990_erp_compound_code(struct dasd_ccw_req * erp, char *sense) } /* end dasd_3990_erp_compound_code */ /* - * DASD_3990_ERP_COMPOUND_CONFIG + * DASD_3990_ERP_COMPOUND_CONFIG * * DESCRIPTION * Handles the compound ERP action for configruation @@ -2063,10 +2063,10 @@ dasd_3990_erp_compound_config(struct dasd_ccw_req * erp, char *sense) } /* end dasd_3990_erp_compound_config */ /* - * DASD_3990_ERP_COMPOUND + * DASD_3990_ERP_COMPOUND * * DESCRIPTION - * Does the further compound program action if + * Does the further compound program action if * compound retry was not successful. * * PARAMETER @@ -2110,11 +2110,11 @@ dasd_3990_erp_compound(struct dasd_ccw_req * erp, char *sense) } /* end dasd_3990_erp_compound */ /* - * DASD_3990_ERP_INSPECT_32 + * DASD_3990_ERP_INSPECT_32 * * DESCRIPTION * Does a detailed inspection of the 32 byte sense data - * and sets up a related error recovery action. + * and sets up a related error recovery action. * * PARAMETER * sense sense data of the actual error @@ -2228,9 +2228,9 @@ dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense) } /* end dasd_3990_erp_inspect_32 */ /* - ***************************************************************************** + ***************************************************************************** * main ERP control fuctions (24 and 32 byte sense) - ***************************************************************************** + ***************************************************************************** */ /* @@ -2243,7 +2243,7 @@ dasd_3990_erp_inspect_32(struct dasd_ccw_req * erp, char *sense) * PARAMETER * erp pointer to the currently created default ERP * RETURN VALUES - * erp_new contens was possibly modified + * erp_new contens was possibly modified */ static struct dasd_ccw_req * dasd_3990_erp_inspect(struct dasd_ccw_req * erp) @@ -2272,14 +2272,14 @@ dasd_3990_erp_inspect(struct dasd_ccw_req * erp) /* * DASD_3990_ERP_ADD_ERP - * + * * DESCRIPTION * This funtion adds an additional request block (ERP) to the head of * the given cqr (or erp). * This erp is initialized as an default erp (retry TIC) * * PARAMETER - * cqr head of the current ERP-chain (or single cqr if + * cqr head of the current ERP-chain (or single cqr if * first error) * RETURN VALUES * erp pointer to new ERP-chain head @@ -2332,15 +2332,15 @@ dasd_3990_erp_add_erp(struct dasd_ccw_req * cqr) } /* - * DASD_3990_ERP_ADDITIONAL_ERP - * + * DASD_3990_ERP_ADDITIONAL_ERP + * * DESCRIPTION * An additional ERP is needed to handle the current error. * Add ERP to the head of the ERP-chain containing the ERP processing * determined based on the sense data. * * PARAMETER - * cqr head of the current ERP-chain (or single cqr if + * cqr head of the current ERP-chain (or single cqr if * first error) * * RETURN VALUES @@ -2376,7 +2376,7 @@ dasd_3990_erp_additional_erp(struct dasd_ccw_req * cqr) * 24 byte sense byte 25 and 27 is set as well. * * PARAMETER - * cqr1 first cqr, which will be compared with the + * cqr1 first cqr, which will be compared with the * cqr2 second cqr. * * RETURN VALUES @@ -2415,7 +2415,7 @@ dasd_3990_erp_error_match(struct dasd_ccw_req *cqr1, struct dasd_ccw_req *cqr2) * cqr failed cqr (either original cqr or already an erp) * * RETURN VALUES - * erp erp-pointer to the already defined error + * erp erp-pointer to the already defined error * recovery procedure OR * NULL if a 'new' error occurred. */ @@ -2451,10 +2451,10 @@ dasd_3990_erp_in_erp(struct dasd_ccw_req *cqr) * DASD_3990_ERP_FURTHER_ERP (24 & 32 byte sense) * * DESCRIPTION - * No retry is left for the current ERP. Check what has to be done + * No retry is left for the current ERP. Check what has to be done * with the ERP. * - do further defined ERP action or - * - wait for interrupt or + * - wait for interrupt or * - exit with permanent error * * PARAMETER @@ -2485,7 +2485,7 @@ dasd_3990_erp_further_erp(struct dasd_ccw_req *erp) if (!(sense[2] & DASD_SENSE_BIT_0)) { - /* issue a Diagnostic Control command with an + /* issue a Diagnostic Control command with an * Inhibit Write subcommand */ switch (sense[25]) { @@ -2535,14 +2535,14 @@ dasd_3990_erp_further_erp(struct dasd_ccw_req *erp) } /* end dasd_3990_erp_further_erp */ /* - * DASD_3990_ERP_HANDLE_MATCH_ERP + * DASD_3990_ERP_HANDLE_MATCH_ERP * * DESCRIPTION * An error occurred again and an ERP has been detected which is already - * used to handle this error (e.g. retries). + * used to handle this error (e.g. retries). * All prior ERP's are asumed to be successful and therefore removed * from queue. - * If retry counter of matching erp is already 0, it is checked if further + * If retry counter of matching erp is already 0, it is checked if further * action is needed (besides retry) or if the ERP has failed. * * PARAMETER @@ -2631,7 +2631,7 @@ dasd_3990_erp_handle_match_erp(struct dasd_ccw_req *erp_head, * erp erp-pointer to the head of the ERP action chain. * This means: * - either a ptr to an additional ERP cqr or - * - the original given cqr (which's status might + * - the original given cqr (which's status might * be modified) */ struct dasd_ccw_req * @@ -2723,22 +2723,3 @@ dasd_3990_erp_action(struct dasd_ccw_req * cqr) return erp; } /* end dasd_3990_erp_action */ - -/* - * 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: - */ |