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phoenix |
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/***************************************************************************
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*
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* drivers/s390/char/tape34xx.h
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* common tape device discipline for 34xx tapes.
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*
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* S390 and zSeries version
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* Copyright (C) 2001 IBM Corporation
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* Author(s): Carsten Otte <cotte@de.ibm.com>
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* Tuan Ngo-Anh <ngoanh@de.ibm.com>
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*
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****************************************************************************
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*/
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#ifndef _TAPE34XX_H
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#define _TAPE34XX_H
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/*
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* The CCW commands for the Tape type of command.
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*/
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#define INVALID_00 0x00 /* Invalid cmd */
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#define BACKSPACEBLOCK 0x27 /* Back Space block */
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#define BACKSPACEFILE 0x2f /* Back Space file */
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#define DATA_SEC_ERASE 0x97 /* Data security erase */
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#define ERASE_GAP 0x17 /* Erase Gap */
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#define FORSPACEBLOCK 0x37 /* Forward space block */
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#define FORSPACEFILE 0x3F /* Forward Space file */
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#define FORCE_STREAM_CNT 0xEB /* Forced streaming count # */
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#define NOP 0x03 /* No operation */
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#define READ_FORWARD 0x02 /* Read forward */
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#define REWIND 0x07 /* Rewind */
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#define REWIND_UNLOAD 0x0F /* Rewind and Unload */
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#define SENSE 0x04 /* Sense */
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#define NEW_MODE_SET 0xEB /* Guess it is Mode set */
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#define WRITE_CMD 0x01 /* Write */
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#define WRITETAPEMARK 0x1F /* Write Tape Mark */
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#define ASSIGN 0xB7 /* 3420 REJECT,3480 OK */
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#define CONTROL_ACCESS 0xE3 /* Set high speed */
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#define DIAG_MODE_SET 0x0B /* 3420 NOP, 3480 REJECT*/
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#define LOAD_DISPLAY 0x9F /* 3420 REJECT,3480 OK */
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#define LOCATE 0x4F /* 3420 REJ, 3480 NOP */
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#define LOOP_WRITE_TO_READ 0x8B /* 3480 REJECT */
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#define MODE_SET_DB 0xDB /* 3420 REJECT,3480 OK */
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#define MODE_SET_C3 0xC3 /* for 3420 */
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#define MODE_SET_CB 0xCB /* for 3420 */
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#define MODE_SET_D3 0xD3 /* for 3420 */
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#define READ_BACKWARD 0x0C /* */
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#define READ_BLOCK_ID 0x22 /* 3420 REJECT,3480 OK */
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#define READ_BUFFER 0x12 /* 3420 REJECT,3480 OK */
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#define READ_BUFF_LOG 0x24 /* 3420 REJECT,3480 OK */
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#define RELEASE 0xD4 /* 3420 NOP, 3480 REJECT*/
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#define REQ_TRK_IN_ERROR 0x1B /* 3420 NOP, 3480 REJECT*/
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#define RESERVE 0xF4 /* 3420 NOP, 3480 REJECT*/
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#define SENSE_GROUP_ID 0x34 /* 3420 REJECT,3480 OK */
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#define SENSE_ID 0xE4 /* 3420 REJECT,3480 OK */
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#define READ_DEV_CHAR 0x64 /* Read device characteristics */
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#define SET_DIAGNOSE 0x4B /* 3420 NOP, 3480 REJECT*/
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#define SET_GROUP_ID 0xAF /* 3420 REJECT,3480 OK */
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#define SET_TAPE_WRITE_IMMED 0xC3 /* for 3480 */
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#define SUSPEND 0x5B /* 3420 REJ, 3480 NOP */
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#define SYNC 0x43 /* Synchronize (flush buffer) */
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#define UNASSIGN 0xC7 /* 3420 REJECT,3480 OK */
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#define PERF_SUBSYS_FUNC 0x77 /* 3490 CMD */
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#define READ_CONFIG_DATA 0xFA /* 3490 CMD */
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#define READ_MESSAGE_ID 0x4E /* 3490 CMD */
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#define READ_SUBSYS_DATA 0x3E /* 3490 CMD */
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#define SET_INTERFACE_ID 0x73 /* 3490 CMD */
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#ifndef MIN
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#define MIN(a,b) ( (a) < (b) ? (a) : (b) )
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#endif
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#define BLOCKSIZE 4096 /* size of the tape rcds */
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#define COMMAND_CHAIN CCW_FLAG_CC /* redefine from irq.h */
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#define CHANNEL_END DEV_STAT_CHN_END /* redefine from irq.h */
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#define DEVICE_END DEV_STAT_DEV_END /* redefine from irq.h */
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#define UNIT_CHECK DEV_STAT_UNIT_CHECK /* redefine from irq.h */
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#define UNIT_EXCEPTION DEV_STAT_UNIT_EXCEP /* redefine from irq.h */
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#define CONTROL_UNIT_END DEV_STAT_CU_END /* redefine from irq.h */
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#define INCORR_LEN SCHN_STAT_INCORR_LEN /* redefine from irq.h */
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#define SENSE_COMMAND_REJECT 0x80
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#define SENSE_INTERVENTION_REQUIRED 0x40
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#define SENSE_BUS_OUT_CHECK 0x20
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#define SENSE_EQUIPMENT_CHECK 0x10
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#define SENSE_DATA_CHECK 0x08
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#define SENSE_OVERRUN 0x04
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#define SENSE_DEFERRED_UNIT_CHECK 0x02
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#define SENSE_ASSIGNED_ELSEWHERE 0x01
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#define SENSE_LOCATE_FAILURE 0x80
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#define SENSE_DRIVE_ONLINE 0x40
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#define SENSE_RESERVED 0x20
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#define SENSE_RECORD_SEQUENCE_ERR 0x10
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#define SENSE_BEGINNING_OF_TAPE 0x08
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#define SENSE_WRITE_MODE 0x04
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#define SENSE_WRITE_PROTECT 0x02
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#define SENSE_NOT_CAPABLE 0x01
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#define SENSE_CHANNEL_ADAPTER_CODE 0xE0
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#define SENSE_CHANNEL_ADAPTER_LOC 0x10
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#define SENSE_REPORTING_CU 0x08
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#define SENSE_AUTOMATIC_LOADER 0x04
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#define SENSE_TAPE_SYNC_MODE 0x02
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#define SENSE_TAPE_POSITIONING 0x01
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typedef struct _tape34xx_disc_data_t {
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__u8 modeset_byte;
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} tape34xx_disc_data_t __attribute__ ((packed, aligned(8)));
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/* discipline functions */
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int tape34xx_ioctl_overload (struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg);
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ccw_req_t * tape34xx_write_block (const char *data, size_t count, tape_info_t * ti);
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void tape34xx_free_write_block (ccw_req_t * cqr, tape_info_t * ti);
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ccw_req_t * tape34xx_read_block (const char *data, size_t count, tape_info_t * ti);
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void tape34xx_free_read_block (ccw_req_t * cqr, tape_info_t * ti);
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void tape34xx_clear_read_block (ccw_req_t * cqr, tape_info_t * ti);
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ccw_req_t * tape34xx_mtfsf (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtbsf (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtfsr (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtbsr (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtweof (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtrew (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtoffl (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtnop (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtbsfm (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtfsfm (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mteom (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mterase (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtsetdensity (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtseek (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mttell (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtsetdrvbuffer (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtlock (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtunlock (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtload (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtunload (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtcompression (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtsetpart (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtmkpart (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtiocget (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_mtiocpos (tape_info_t * ti, int count);
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ccw_req_t * tape34xx_bread (struct request *req, tape_info_t* ti,int tapeblock_major);
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ccw_req_t * tape34xx_bwrite (struct request *req, tape_info_t* ti,int tapeblock_major);
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void tape34xx_free_bread (ccw_req_t*,struct _tape_info_t*);
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void tape34xx_free_bwrite (ccw_req_t*,struct _tape_info_t*);
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/* Event handlers */
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void tape34xx_default_handler (tape_info_t * ti);
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void tape34xx_unexpect_uchk_handler (tape_info_t * ti);
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void tape34xx_unused_done(tape_info_t* ti);
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void tape34xx_idle_done(tape_info_t* ti);
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void tape34xx_block_done(tape_info_t* ti);
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void tape34xx_bsf_init_done(tape_info_t* ti);
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void tape34xx_dse_init_done(tape_info_t* ti);
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void tape34xx_fsf_init_done(tape_info_t* ti);
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void tape34xx_bsb_init_done(tape_info_t* ti);
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void tape34xx_fsb_init_done(tape_info_t* ti);
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void tape34xx_lbl_init_done(tape_info_t* ti);
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void tape34xx_nop_init_done(tape_info_t* ti);
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void tape34xx_rfo_init_done(tape_info_t* ti);
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void tape34xx_rbi_init_done(tape_info_t* ti);
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void tape34xx_rew_init_done(tape_info_t* ti);
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void tape34xx_rew_release_init_done(tape_info_t* ti);
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void tape34xx_run_init_done(tape_info_t* ti);
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void tape34xx_wri_init_done(tape_info_t* ti);
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void tape34xx_wtm_init_done(tape_info_t* ti);
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extern void schedule_tapeblock_exec_IO (tape_info_t *ti);
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// the error recovery stuff:
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void tape34xx_error_recovery (tape_info_t* ti);
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void tape34xx_error_recovery_has_failed (tape_info_t* ti,int error_id);
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void tape34xx_error_recovery_succeded(tape_info_t* ti);
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void tape34xx_error_recovery_do_retry(tape_info_t* ti);
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void tape34xx_error_recovery_read_opposite (tape_info_t* ti);
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void tape34xx_error_recovery_HWBUG (tape_info_t* ti,int condno);
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#endif // _TAPE34XX_H
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