/*************************************************************************** * * drivers/s390/char/tape34xx.c * common tape device discipline for 34xx tapes. * * S390 and zSeries version * Copyright (C) 2001 IBM Corporation * Author(s): Carsten Otte * Tuan Ngo-Anh * **************************************************************************** */ #include "tapedefs.h" #include #include #include #include #include #include #include #include #include #include #ifdef CONFIG_S390_TAPE_DYNAMIC #include #endif #include #include #include "tape.h" #include "tape34xx.h" #define PRINTK_HEADER "T34xx:" tape_event_handler_t tape34xx_event_handler_table[TS_SIZE][TE_SIZE] = { /* {START , DONE, FAILED, ERROR, OTHER } */ {NULL, tape34xx_unused_done, NULL, NULL, NULL}, /* TS_UNUSED */ {NULL, tape34xx_idle_done, NULL, NULL, NULL}, /* TS_IDLE */ {NULL, NULL, NULL, NULL, NULL}, /* TS_DONE */ {NULL, NULL, NULL, NULL, NULL}, /* TS_FAILED */ {NULL, tape34xx_block_done, NULL, NULL, NULL}, /* TS_BLOCK_INIT */ {NULL, tape34xx_bsb_init_done, NULL, NULL, NULL}, /* TS_BSB_INIT */ {NULL, tape34xx_bsf_init_done, NULL, NULL, NULL}, /* TS_BSF_INIT */ {NULL, tape34xx_dse_init_done, NULL, NULL, NULL}, /* TS_DSE_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_EGA_INIT */ {NULL, tape34xx_fsb_init_done, NULL, NULL, NULL}, /* TS_FSB_INIT */ {NULL, tape34xx_fsf_init_done, NULL, NULL, NULL}, /* TS_FSF_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_LDI_INIT */ {NULL, tape34xx_lbl_init_done, NULL, NULL, NULL}, /* TS_LBL_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_MSE_INIT */ {NULL, tape34xx_nop_init_done, NULL, NULL, NULL}, /* TS_NOP_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_RBA_INIT */ {NULL, tape34xx_rbi_init_done, NULL, NULL, NULL}, /* TS_RBI_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_RBU_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_RBL_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_RDC_INIT */ {NULL, tape34xx_rfo_init_done, NULL, NULL, NULL}, /* TS_RFO_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_RSD_INIT */ {NULL, tape34xx_rew_init_done, NULL, NULL, NULL}, /* TS_REW_INIT */ {NULL, tape34xx_rew_release_init_done, NULL, NULL, NULL}, /* TS_REW_RELEASE_IMIT */ {NULL, tape34xx_run_init_done, NULL, NULL, NULL}, /* TS_RUN_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_SEN_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_SID_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_SNP_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_SPG_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_SWI_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_SMR_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_SYN_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_TIO_INIT */ {NULL, NULL, NULL, NULL, NULL}, /* TS_UNA_INIT */ {NULL, tape34xx_wri_init_done, NULL, NULL, NULL}, /* TS_WRI_INIT */ {NULL, tape34xx_wtm_init_done, NULL, NULL, NULL}, /* TS_WTM_INIT */ {NULL, NULL, NULL, NULL, NULL}}; /* TS_NOT_OPER */ int tape34xx_ioctl_overload (struct inode *inode, struct file *filp, unsigned int cmd, unsigned long arg) { return -EINVAL; // no additional ioctls } ccw_req_t * tape34xx_write_block (const char *data, size_t count, tape_info_t * ti) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; void *mem; cqr = tape_alloc_ccw_req (ti, 2, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xwbl nomem"); #endif /* TAPE_DEBUG */ return NULL; } mem = kmalloc (count, GFP_KERNEL); if (!mem) { tape_free_request (cqr); #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xwbl nomem"); #endif /* TAPE_DEBUG */ return NULL; } if (copy_from_user (mem, data, count)) { kfree (mem); tape_free_request (cqr); #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xwbl segf."); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = WRITE_CMD; ccw->flags = 0; ccw->count = count; set_normalized_cda (ccw, (unsigned long) mem); if ((ccw->cda) == 0) { kfree (mem); tape_free_request (cqr); return NULL; } s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = mem; ti->userbuf = (void *) data; tapestate_set (ti, TS_WRI_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xwbl ccwg"); #endif /* TAPE_DEBUG */ return cqr; } void tape34xx_free_write_block (ccw_req_t * cqr, tape_info_t * ti) { unsigned long lockflags; ccw1_t *ccw; s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ccw = cqr->cpaddr; ccw++; clear_normalized_cda (ccw); kfree (ti->kernbuf); tape_free_request (cqr); ti->kernbuf = ti->userbuf = NULL; s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xfwb free"); #endif /* TAPE_DEBUG */ } ccw_req_t * tape34xx_read_block (const char *data, size_t count, tape_info_t * ti) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; void *mem; cqr = tape_alloc_ccw_req (ti, 2, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xrbl nomem"); #endif /* TAPE_DEBUG */ return NULL; } mem = kmalloc (count, GFP_KERNEL); if (!mem) { tape_free_request (cqr); #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xrbl nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = READ_FORWARD; ccw->flags = 0; ccw->count = count; set_normalized_cda (ccw, (unsigned long) mem); if ((ccw->cda) == 0) { kfree (mem); tape_free_request (cqr); return NULL; } s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = mem; ti->userbuf = (void *) data; tapestate_set (ti, TS_RFO_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xrbl ccwg"); #endif /* TAPE_DEBUG */ return cqr; } ccw_req_t * tape34xx_read_opposite (tape_info_t * ti,int novalue) { ccw_req_t *cqr; ccw1_t *ccw; size_t count; // first, retrieve the count from the old cqr. cqr = ti->cqr; ccw = cqr->cpaddr; ccw++; count=ccw->count; // free old cqr. clear_normalized_cda (ccw); tape_free_request (cqr); // build new cqr cqr = tape_alloc_ccw_req (ti, 3, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xrop nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = READ_BACKWARD; ccw->flags = CCW_FLAG_CC; ccw->count = count; set_normalized_cda (ccw, (unsigned long) ti->kernbuf); if ((ccw->cda) == 0) { tape_free_request (cqr); return NULL; } ccw++; ccw->cmd_code = FORSPACEBLOCK; ccw->flags = CCW_FLAG_CC; ccw->count = 1; ccw->cda = (unsigned long)ccw; ccw++; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 1; ccw->cda = (unsigned long)ccw; tapestate_set (ti, TS_RBA_INIT); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xrop ccwg"); #endif /* TAPE_DEBUG */ return cqr; } void tape34xx_free_read_block (ccw_req_t * cqr, tape_info_t * ti) { unsigned long lockflags; size_t cpysize; ccw1_t *ccw; s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ccw = cqr->cpaddr; ccw++; cpysize = ccw->count - ti->devstat.rescnt; s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); if (copy_to_user (ti->userbuf, ti->kernbuf, cpysize)) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xfrb segf."); #endif /* TAPE_DEBUG */ } s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); clear_normalized_cda (ccw); kfree (ti->kernbuf); tape_free_request (cqr); ti->kernbuf = ti->userbuf = NULL; s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xfrb free"); #endif /* TAPE_DEBUG */ } /* * The IOCTL interface is implemented in the following section, * excepted the MTRESET, MTSETBLK which are handled by tapechar.c */ /* * MTFSF: Forward space over 'count' file marks. The tape is positioned * at the EOT (End of Tape) side of the file mark. */ ccw_req_t * tape34xx_mtfsf (tape_info_t * ti, int count) { long lockflags; int i; ccw_req_t *cqr; ccw1_t *ccw; if ((count == 0) || (count > 510)) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xfsf parm"); #endif /* TAPE_DEBUG */ return NULL; } cqr = tape_alloc_ccw_req (ti, 2 + count, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xfsf nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; for (i = 0; i < count; i++) { ccw->cmd_code = FORSPACEFILE; ccw->flags = CCW_FLAG_CC; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; } ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_FSF_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xfsf ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTBSF: Backward space over 'count' file marks. The tape is positioned at * the EOT (End of Tape) side of the last skipped file mark. */ ccw_req_t * tape34xx_mtbsf (tape_info_t * ti, int count) { long lockflags; int i; ccw_req_t *cqr; ccw1_t *ccw; if ((count == 0) || (count > 510)) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xbsf parm"); #endif /* TAPE_DEBUG */ return NULL; } cqr = tape_alloc_ccw_req (ti, 2 + count, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xbsf nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; for (i = 0; i < count; i++) { ccw->cmd_code = BACKSPACEFILE; ccw->flags = CCW_FLAG_CC; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; } ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_BSF_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xbsf ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTFSR: Forward space over 'count' tape blocks (blocksize is set * via MTSETBLK. */ ccw_req_t * tape34xx_mtfsr (tape_info_t * ti, int count) { long lockflags; int i; ccw_req_t *cqr; ccw1_t *ccw; if ((count == 0) || (count > 510)) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xfsr parm"); #endif /* TAPE_DEBUG */ return NULL; } cqr = tape_alloc_ccw_req (ti, 2 + count, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xfsr nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; for (i = 0; i < count; i++) { ccw->cmd_code = FORSPACEBLOCK; ccw->flags = CCW_FLAG_CC; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; } ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_FSB_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xfsr ccwgen"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTBSR: Backward space over 'count' tape blocks. * (blocksize is set via MTSETBLK. */ ccw_req_t * tape34xx_mtbsr (tape_info_t * ti, int count) { long lockflags; int i; ccw_req_t *cqr; ccw1_t *ccw; if ((count == 0) || (count > 510)) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xbsr parm"); #endif /* TAPE_DEBUG */ return NULL; } cqr = tape_alloc_ccw_req (ti, 2 + count, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xbsr nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; for (i = 0; i < count; i++) { ccw->cmd_code = BACKSPACEBLOCK; ccw->flags = CCW_FLAG_CC; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; } ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_BSB_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xbsr ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTWEOF: Write 'count' file marks at the current position. */ ccw_req_t * tape34xx_mtweof (tape_info_t * ti, int count) { long lockflags; int i; ccw_req_t *cqr; ccw1_t *ccw; if ((count == 0) || (count > 510)) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xweo parm"); #endif /* TAPE_DEBUG */ return NULL; } cqr = tape_alloc_ccw_req (ti, 2 + count, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xweo nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; for (i = 0; i < count; i++) { ccw->cmd_code = WRITETAPEMARK; ccw->flags = CCW_FLAG_CC; ccw->count = 1; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; } ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_WTM_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xweo ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTREW: Rewind the tape. */ ccw_req_t * tape34xx_mtrew (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; cqr = tape_alloc_ccw_req (ti, 3, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xrew nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = REWIND; ccw->flags = CCW_FLAG_CC; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_REW_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xrew ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTOFFL: Rewind the tape and put the drive off-line. * Implement 'rewind unload' */ ccw_req_t * tape34xx_mtoffl (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; cqr = tape_alloc_ccw_req (ti, 3, 32); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xoff nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = REWIND_UNLOAD; ccw->flags = CCW_FLAG_CC; ccw->count = 1; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; ccw->cmd_code = SENSE; ccw->flags = 0; ccw->count = 32; ccw->cda = (unsigned long) cqr->cpaddr; s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_RUN_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xoff ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTNOP: 'No operation'. */ ccw_req_t * tape34xx_mtnop (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; cqr = tape_alloc_ccw_req (ti, 1, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xnop nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) ccw->cmd_code; s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_NOP_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xnop ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTBSFM: Backward space over 'count' file marks. * The tape is positioned at the BOT (Begin Of Tape) side of the * last skipped file mark. */ ccw_req_t * tape34xx_mtbsfm (tape_info_t * ti, int count) { long lockflags; int i; ccw_req_t *cqr; ccw1_t *ccw; if ((count == 0) || (count > 510)) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xbsm parm"); #endif /* TAPE_DEBUG */ return NULL; } cqr = tape_alloc_ccw_req (ti, 2 + count, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xbsm nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; for (i = 0; i < count; i++) { ccw->cmd_code = BACKSPACEFILE; ccw->flags = CCW_FLAG_CC; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; } ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_BSF_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xbsm ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTFSFM: Forward space over 'count' file marks. * The tape is positioned at the BOT (Begin Of Tape) side * of the last skipped file mark. */ ccw_req_t * tape34xx_mtfsfm (tape_info_t * ti, int count) { long lockflags; int i; ccw_req_t *cqr; ccw1_t *ccw; if ((count == 0) || (count > 510)) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xfsm parm"); #endif /* TAPE_DEBUG */ return NULL; } cqr = tape_alloc_ccw_req (ti, 2 + count, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xfsm nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; for (i = 0; i < count; i++) { ccw->cmd_code = FORSPACEFILE; ccw->flags = CCW_FLAG_CC; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; } ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_FSF_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xfsm ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTEOM: positions at the end of the portion of the tape already used * for recordind data. MTEOM positions after the last file mark, ready for * appending another file. * MTRETEN: Retension the tape, i.e. forward space to end of tape and rewind. */ ccw_req_t * tape34xx_mteom (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; cqr = tape_alloc_ccw_req (ti, 4, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xeom nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = FORSPACEFILE; ccw->flags = CCW_FLAG_CC; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; ccw->cmd_code = NOP; ccw->flags = CCW_FLAG_CC; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; ccw->cmd_code = CCW_CMD_TIC; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (cqr->cpaddr); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_FSF_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xeom ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTERASE: erases the tape. */ ccw_req_t * tape34xx_mterase (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; cqr = tape_alloc_ccw_req (ti, 5, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xera nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = REWIND; ccw->flags = CCW_FLAG_CC; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; ccw->cmd_code = ERASE_GAP; ccw->flags = CCW_FLAG_CC; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; ccw->cmd_code = DATA_SEC_ERASE; ccw->flags = CCW_FLAG_CC; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_DSE_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xera ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTSETDENSITY: set tape density. */ ccw_req_t * tape34xx_mtsetdensity (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; cqr = tape_alloc_ccw_req (ti, 2, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xden nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_NOP_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xden ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTSEEK: seek to the specified block. */ ccw_req_t * tape34xx_mtseek (tape_info_t * ti, int count) { long lockflags; __u8 *data; ccw_req_t *cqr; ccw1_t *ccw; if ((data = kmalloc (4 * sizeof (__u8), GFP_KERNEL)) == NULL) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xsee nomem"); #endif /* TAPE_DEBUG */ return NULL; } data[0] = 0x01; data[1] = data[2] = data[3] = 0x00; if (count >= 4194304) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xsee parm"); #endif /* TAPE_DEBUG */ kfree(data); return NULL; } if (((tape34xx_disc_data_t *) ti->discdata)->modeset_byte & 0x08) // IDRC on data[1] = data[1] | 0x80; data[3] += count % 256; data[2] += (count / 256) % 256; data[1] += (count / 65536); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xsee id:"); debug_int_event (tape_debug_area,6,count); #endif /* TAPE_DEBUG */ cqr = tape_alloc_ccw_req (ti, 3, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xsee nomem"); #endif /* TAPE_DEBUG */ kfree (data); return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = LOCATE; ccw->flags = CCW_FLAG_CC; ccw->count = 4; set_normalized_cda (ccw, (unsigned long) data); ccw++; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = data; ti->userbuf = NULL; tapestate_set (ti, TS_LBL_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xsee ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTTELL: Tell block. Return the number of block relative to current file. */ ccw_req_t * tape34xx_mttell (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; void *mem; cqr = tape_alloc_ccw_req (ti, 2, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xtel nomem"); #endif /* TAPE_DEBUG */ return NULL; } mem = kmalloc (8, GFP_KERNEL); if (!mem) { tape_free_request (cqr); #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xtel nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = READ_BLOCK_ID; ccw->flags = 0; ccw->count = 8; set_normalized_cda (ccw, (unsigned long) mem); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = mem; ti->userbuf = NULL; tapestate_set (ti, TS_RBI_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xtel ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTSETDRVBUFFER: Set the tape drive buffer code to number. * Implement NOP. */ ccw_req_t * tape34xx_mtsetdrvbuffer (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; cqr = tape_alloc_ccw_req (ti, 2, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xbuf nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_NOP_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xbuf ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTLOCK: Locks the tape drive door. * Implement NOP CCW command. */ ccw_req_t * tape34xx_mtlock (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; cqr = tape_alloc_ccw_req (ti, 2, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xloc nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_NOP_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xloc ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTUNLOCK: Unlocks the tape drive door. * Implement the NOP CCW command. */ ccw_req_t * tape34xx_mtunlock (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; cqr = tape_alloc_ccw_req (ti, 2, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xulk nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_NOP_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xulk ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTLOAD: Loads the tape. * This function is not implemented and returns NULL, which causes the Frontend to wait for a medium being loaded. * The 3480/3490 type Tapes do not support a load command */ ccw_req_t * tape34xx_mtload (tape_info_t * ti, int count) { return NULL; } /* * MTUNLOAD: Rewind the tape and unload it. */ ccw_req_t * tape34xx_mtunload (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; cqr = tape_alloc_ccw_req (ti, 3, 32); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xunl nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = REWIND_UNLOAD; ccw->flags = CCW_FLAG_CC; ccw->count = 1; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ccw++; ccw->cmd_code = SENSE; ccw->flags = 0; ccw->count = 32; ccw->cda = (unsigned long) cqr->cpaddr; s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_RUN_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xunl ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTCOMPRESSION: used to enable compression. * Sets the IDRC on/off. */ ccw_req_t * tape34xx_mtcompression (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; if ((count < 0) || (count > 1)) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xcom parm"); #endif /* TAPE_DEBUG */ return NULL; } if (count == 0) ((tape34xx_disc_data_t *) ti->discdata)->modeset_byte = 0x00; // IDRC off else ((tape34xx_disc_data_t *) ti->discdata)->modeset_byte = 0x08; // IDRC on cqr = tape_alloc_ccw_req (ti, 2, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xcom nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_NOP_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xcom ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTSTPART: Move the tape head at the partition with the number 'count'. * Implement the NOP CCW command. */ ccw_req_t * tape34xx_mtsetpart (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; cqr = tape_alloc_ccw_req (ti, 2, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xspa nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_NOP_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xspa ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTMKPART: .... dummy . * Implement the NOP CCW command. */ ccw_req_t * tape34xx_mtmkpart (tape_info_t * ti, int count) { long lockflags; ccw_req_t *cqr; ccw1_t *ccw; cqr = tape_alloc_ccw_req (ti, 2, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xnpa nomem"); #endif /* TAPE_DEBUG */ return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); ccw++; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); s390irq_spin_lock_irqsave (ti->devinfo.irq, lockflags); ti->kernbuf = NULL; ti->userbuf = NULL; tapestate_set (ti, TS_NOP_INIT); s390irq_spin_unlock_irqrestore (ti->devinfo.irq, lockflags); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xnpa ccwg"); #endif /* TAPE_DEBUG */ return cqr; } /* * MTIOCGET: query the tape drive status. */ ccw_req_t * tape34xx_mtiocget (tape_info_t * ti, int count) { return NULL; } /* * MTIOCPOS: query the tape position. */ ccw_req_t * tape34xx_mtiocpos (tape_info_t * ti, int count) { return NULL; } ccw_req_t * tape34xx_bread (struct request *req,tape_info_t* ti,int tapeblock_major) { ccw_req_t *cqr; ccw1_t *ccw; __u8 *data; int s2b = blksize_size[tapeblock_major][ti->blk_minor]/hardsect_size[tapeblock_major][ti->blk_minor]; int realcount; int size,bhct = 0; struct buffer_head* bh; for (bh = req->bh; bh; bh = bh->b_reqnext) { if (bh->b_size > blksize_size[tapeblock_major][ti->blk_minor]) for (size = 0; size < bh->b_size; size += blksize_size[tapeblock_major][ti->blk_minor]) bhct++; else bhct++; } if ((data = kmalloc (4 * sizeof (__u8), GFP_ATOMIC)) == NULL) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,3,"xBREDnomem"); #endif /* TAPE_DEBUG */ return NULL; } data[0] = 0x01; data[1] = data[2] = data[3] = 0x00; realcount=req->sector/s2b; if (((tape34xx_disc_data_t *) ti->discdata)->modeset_byte & 0x08) // IDRC on data[1] = data[1] | 0x80; data[3] += realcount % 256; data[2] += (realcount / 256) % 256; data[1] += (realcount / 65536); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xBREDid:"); debug_int_event (tape_debug_area,6,realcount); #endif /* TAPE_DEBUG */ cqr = tape_alloc_ccw_req (ti, 2+bhct+1, 0); if (!cqr) { #ifdef TAPE_DEBUG debug_text_exception (tape_debug_area,6,"xBREDnomem"); #endif /* TAPE_DEBUG */ kfree(data); return NULL; } ccw = cqr->cpaddr; ccw->cmd_code = MODE_SET_DB; ccw->flags = CCW_FLAG_CC; ccw->count = 1; set_normalized_cda (ccw, (unsigned long) (&(((tape34xx_disc_data_t *) ti->discdata)->modeset_byte))); if (realcount!=ti->position) { ccw++; ccw->cmd_code = LOCATE; ccw->flags = CCW_FLAG_CC; ccw->count = 4; set_normalized_cda (ccw, (unsigned long) data); } ti->position=realcount+req->nr_sectors/s2b; for (bh=req->bh;bh!=NULL;) { ccw->flags = CCW_FLAG_CC; if (bh->b_size >= blksize_size[tapeblock_major][ti->blk_minor]) { for (size = 0; size < bh->b_size; size += blksize_size[tapeblock_major][ti->blk_minor]) { ccw++; ccw->flags = CCW_FLAG_CC; ccw->cmd_code = READ_FORWARD; ccw->count = blksize_size[tapeblock_major][ti->blk_minor]; set_normalized_cda (ccw, __pa (bh->b_data + size)); } bh = bh->b_reqnext; } else { /* group N bhs to fit into byt_per_blk */ for (size = 0; bh != NULL && size < blksize_size[tapeblock_major][ti->blk_minor];) { ccw++; ccw->flags = CCW_FLAG_DC; ccw->cmd_code = READ_FORWARD; ccw->count = bh->b_size; set_normalized_cda (ccw, __pa (bh->b_data)); size += bh->b_size; bh = bh->b_reqnext; } if (size != blksize_size[tapeblock_major][ti->blk_minor]) { PRINT_WARN ("Cannot fulfill small request %d vs. %d (%ld sects)\n", size, blksize_size[tapeblock_major][ti->blk_minor], req->nr_sectors); kfree(data); tape_free_request (cqr); return NULL; } } } ccw -> flags &= ~(CCW_FLAG_DC); ccw -> flags |= (CCW_FLAG_CC); ccw++; ccw->cmd_code = NOP; ccw->flags = 0; ccw->count = 0; ccw->cda = (unsigned long) (&(ccw->cmd_code)); ti->kernbuf = data; ti->userbuf = NULL; tapestate_set (ti, TS_BLOCK_INIT); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xBREDccwg"); #endif /* TAPE_DEBUG */ return cqr; } void tape34xx_free_bread (ccw_req_t* cqr,struct _tape_info_t* ti) { ccw1_t* ccw; for (ccw=(ccw1_t*)cqr->cpaddr;(ccw->flags & CCW_FLAG_CC)||(ccw->flags & CCW_FLAG_DC);ccw++) if ((ccw->cmd_code == MODE_SET_DB) || (ccw->cmd_code == LOCATE) || (ccw->cmd_code == READ_FORWARD)) clear_normalized_cda(ccw); tape_free_request(cqr); kfree(ti->kernbuf); ti->kernbuf=NULL; } /* event handlers */ void tape34xx_default_handler (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xdefhandle"); #endif /* TAPE_DEBUG */ PRINT_ERR ("TAPE34XX: An unexpected Unit Check occurred.\n"); PRINT_ERR ("TAPE34XX: Please read Documentation/s390/TAPE and report it!\n"); PRINT_ERR ("TAPE34XX: Current state is: %s", (((tapestate_get (ti) < TS_SIZE) && (tapestate_get (ti) >= 0)) ? state_verbose[tapestate_get (ti)] : "->UNKNOWN STATE<-")); tape_dump_sense (&ti->devstat); ti->rc = -EIO; ti->wanna_wakeup=1; switch (tapestate_get(ti)) { case TS_REW_RELEASE_INIT: tapestate_set(ti,TS_FAILED); wake_up (&ti->wq); break; case TS_BLOCK_INIT: tapestate_set(ti,TS_FAILED); schedule_tapeblock_exec_IO(ti); break; default: tapestate_set(ti,TS_FAILED); wake_up_interruptible (&ti->wq); } } void tape34xx_unexpect_uchk_handler (tape_info_t * ti) { if ((ti->devstat.ii.sense.data[0] == 0x40) && (ti->devstat.ii.sense.data[1] == 0x40) && (ti->devstat.ii.sense.data[3] == 0x43)) { // no tape in the drive PRINT_INFO ("Drive %d not ready. No volume loaded.\n", ti->rew_minor / 2); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,3,"xuuh nomed"); #endif /* TAPE_DEBUG */ tapestate_set (ti, TS_FAILED); ti->rc = -ENOMEDIUM; ti->wanna_wakeup=1; wake_up_interruptible (&ti->wq); } else if ((ti->devstat.ii.sense.data[0] == 0x42) && (ti->devstat.ii.sense.data[1] == 0x44) && (ti->devstat.ii.sense.data[3] == 0x3b)) { PRINT_INFO ("Media in drive %d was changed!\n", ti->rew_minor / 2); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,3,"xuuh medchg"); #endif /* nothing to do. chan end & dev end will be reported when io is finished */ } else { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,3,"xuuh unexp"); debug_text_event (tape_debug_area,3,"state:"); debug_text_event (tape_debug_area,3,((tapestate_get (ti) < TS_SIZE) && (tapestate_get (ti) >= 0)) ? state_verbose[tapestate_get (ti)] : "TS UNKNOWN"); #endif /* TAPE_DEBUG */ tape34xx_default_handler (ti); } } void tape34xx_unused_done (tape_info_t * ti) { if (ti->medium_is_unloaded) { // A medium was inserted in the drive! #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xuui med"); #endif /* TAPE_DEBUG */ PRINT_WARN ("A medium was inserted into the tape.\n"); ti->medium_is_unloaded=0; } else { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,3,"unsol.irq!"); debug_text_event (tape_debug_area,3,"dev end"); debug_int_exception (tape_debug_area,3,ti->devinfo.irq); #endif /* TAPE_DEBUG */ PRINT_WARN ("Unsolicited IRQ (Device End) caught in unused state.\n"); tape_dump_sense (&ti->devstat); } } void tape34xx_idle_done (tape_info_t * ti) { if (ti->medium_is_unloaded) { // A medium was inserted in the drive! #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"xuud med"); #endif /* TAPE_DEBUG */ PRINT_WARN ("A medium was inserted into the tape.\n"); ti->medium_is_unloaded=0; wake_up_interruptible (&ti->wq); } else { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,3,"unsol.irq!"); debug_text_event (tape_debug_area,3,"dev end"); debug_int_exception (tape_debug_area,3,ti->devinfo.irq); #endif /* TAPE_DEBUG */ PRINT_WARN ("Unsolicited IRQ (Device End) caught in idle state.\n"); tape_dump_sense (&ti->devstat); } } void tape34xx_block_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"x:bREQdone"); #endif /* TAPE_DEBUG */ tapestate_set(ti,TS_DONE); schedule_tapeblock_exec_IO(ti); } void tape34xx_bsf_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"bsf done"); #endif tapestate_set (ti, TS_DONE); ti->rc = 0; ti->wanna_wakeup=1; wake_up_interruptible (&ti->wq); } void tape34xx_dse_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"dse done"); #endif tapestate_set (ti, TS_DONE); ti->rc = 0; ti->wanna_wakeup=1; wake_up_interruptible (&ti->wq); } void tape34xx_fsf_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"fsf done"); #endif tapestate_set (ti, TS_DONE); ti->rc = 0; ti->wanna_wakeup=1; wake_up_interruptible (&ti->wq); } void tape34xx_fsb_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"fsb done"); #endif tapestate_set (ti, TS_DONE); ti->rc = 0; ti->wanna_wakeup=1; wake_up_interruptible (&ti->wq); } void tape34xx_bsb_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"bsb done"); #endif tapestate_set (ti, TS_DONE); ti->rc = 0; ti->wanna_wakeup=1; wake_up (&ti->wq); } void tape34xx_lbl_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"lbl done"); #endif tapestate_set (ti, TS_DONE); ti->rc = 0; //s390irq_spin_unlock(tape->devinfo.irq); ti->wanna_wakeup=1; wake_up (&ti->wq); } void tape34xx_nop_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"nop done.."); debug_text_exception (tape_debug_area,6,"or rew/rel"); #endif tapestate_set (ti, TS_DONE); ti->rc = 0; //s390irq_spin_unlock(tape->devinfo.irq); ti->wanna_wakeup=1; wake_up (&ti->wq); } void tape34xx_rfo_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"rfo done"); #endif tapestate_set (ti, TS_DONE); ti->rc = 0; ti->wanna_wakeup=1; wake_up (&ti->wq); } void tape34xx_rbi_init_done (tape_info_t * ti) { __u8 *data; #ifdef TAPE_DEBUG int i; #endif tapestate_set (ti, TS_FAILED); data = ti->kernbuf; ti->rc = data[3]; ti->rc += 256 * data[2]; ti->rc += 65536 * (data[1] & 0x3F); #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"rbi done"); debug_text_event (tape_debug_area,6,"data:"); for (i=0;i<8;i++) debug_int_event (tape_debug_area,6,data[i]); #endif ti->wanna_wakeup=1; wake_up_interruptible (&ti->wq); } void tape34xx_rew_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"rew done"); #endif //BH: use irqsave //s390irq_spin_lock(tape->devinfo.irq); tapestate_set (ti, TS_DONE); ti->rc = 0; //s390irq_spin_unlock(tape->devinfo.irq); ti->wanna_wakeup=1; wake_up_interruptible (&ti->wq); } void tape34xx_rew_release_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"rewR done"); #endif tapestate_set (ti, TS_DONE); ti->rc = 0; //s390irq_spin_unlock(tape->devinfo.irq); ti->wanna_wakeup=1; wake_up (&ti->wq); } void tape34xx_run_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"rew done"); #endif tapestate_set (ti, TS_DONE); ti->rc = 0; ti->wanna_wakeup=1; wake_up_interruptible (&ti->wq); } void tape34xx_wri_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,6,"wri done"); #endif //BH: use irqsave //s390irq_spin_lock(ti->devinfo.irq); tapestate_set (ti, TS_DONE); ti->rc = 0; //s390irq_spin_unlock(ti->devinfo.irq); ti->wanna_wakeup=1; wake_up_interruptible (&ti->wq); } void tape34xx_wtm_init_done (tape_info_t * ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,3,"wtm done"); #endif tapestate_set (ti, TS_DONE); ti->rc = 0; ti->wanna_wakeup=1; wake_up_interruptible (&ti->wq); } /* This function analyses the tape's sense-data in case of a unit-check. If possible, it tries to recover from the error. Else the user is informed about the problem. */ void tape34xx_error_recovery (tape_info_t* ti) { __u8* sense=ti->devstat.ii.sense.data; int inhibit_cu_recovery=0; int cu_type=ti->discipline->cu_type; if ((((tape34xx_disc_data_t *) ti->discdata)->modeset_byte)&0x80) inhibit_cu_recovery=1; if (tapestate_get(ti)==TS_BLOCK_INIT) { // no recovery for block device, bottom half will retry... tape34xx_error_recovery_has_failed(ti,EIO); return; } if (sense[0]&SENSE_COMMAND_REJECT) switch (tapestate_get(ti)) { case TS_BLOCK_INIT: case TS_DSE_INIT: case TS_EGA_INIT: case TS_WRI_INIT: case TS_WTM_INIT: if (sense[1]&SENSE_WRITE_PROTECT) { // trying to write, but medium is write protected tape34xx_error_recovery_has_failed(ti,EACCES); return; } default: tape34xx_error_recovery_HWBUG(ti,1); return; } // special cases for various tape-states when reaching end of recorded area if (((sense[0]==0x08) || (sense[0]==0x10) || (sense[0]==0x12)) && ((sense[1]==0x40) || (sense[1]==0x0c))) switch (tapestate_get(ti)) { case TS_FSF_INIT: // Trying to seek beyond end of recorded area tape34xx_error_recovery_has_failed(ti,EIO); return; case TS_LBL_INIT: // Block could not be located. tape34xx_error_recovery_has_failed(ti,EIO); return; case TS_RFO_INIT: // Try to read beyond end of recorded area -> 0 bytes read tape34xx_error_recovery_has_failed(ti,0); return; } // Sensing special bits if (sense[0]&SENSE_BUS_OUT_CHECK) { tape34xx_error_recovery_do_retry(ti); return; } if (sense[0]&SENSE_DATA_CHECK) { // hardware failure, damaged tape or improper operating conditions switch (sense[3]) { case 0x23: // a read data check occurred if ((sense[2]&SENSE_TAPE_SYNC_MODE) || (inhibit_cu_recovery)) { // data check is not permanent, may be recovered. // We always use async-mode with cu-recovery, so this should *never* happen. tape34xx_error_recovery_HWBUG(ti,2); return; } else { // data check is permanent, CU recovery has failed PRINT_WARN("Permanent read error, recovery failed!\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; } case 0x25: // a write data check occurred if ((sense[2]&SENSE_TAPE_SYNC_MODE) || (inhibit_cu_recovery)) { // data check is not permanent, may be recovered. // We always use async-mode with cu-recovery, so this should *never* happen. tape34xx_error_recovery_HWBUG(ti,3); return; } else { // data check is permanent, cu-recovery has failed PRINT_WARN("Permanent write error, recovery failed!\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; } case 0x26: // Data Check (read opposite) occurred. We'll recover this. tape34xx_error_recovery_read_opposite(ti); return; case 0x28: // The ID-Mark at the beginning of the tape could not be written. This is fatal, we'll report and exit. PRINT_WARN("ID-Mark could not be written. Check your hardware!\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x31: // Tape void. Tried to read beyond end of device. We'll report and exit. PRINT_WARN("Try to read beyond end of recorded area!\n"); tape34xx_error_recovery_has_failed(ti,ENOSPC); return; case 0x41: // Record sequence error. cu detected incorrect block-id sequence on tape. We'll report and exit. PRINT_WARN("Illegal block-id sequence found!\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; default: // well, all data checks for 3480 should result in one of the above erpa-codes. if not -> bug // On 3490, other data-check conditions do exist. if (cu_type==0x3480) { tape34xx_error_recovery_HWBUG(ti,4); return; } } } if (sense[0]&SENSE_OVERRUN) { // A data overrun between cu and drive occurred. The channel speed is to slow! We'll report this and exit! switch (sense[3]) { case 0x40: // overrun error PRINT_WARN ("Data overrun error between control-unit and drive. Use a faster channel connection, if possible! \n"); tape34xx_error_recovery_has_failed(ti,EIO); return; default: // Overrun bit is set, but erpa does not show overrun error. This is a bug. tape34xx_error_recovery_HWBUG(ti,5); return; } } if (sense[1]&SENSE_RECORD_SEQUENCE_ERR) { switch (sense[3]) { case 0x41: // Record sequence error. cu detected incorrect block-id sequence on tape. We'll report and exit. PRINT_WARN("Illegal block-id sequence found!\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; default: // Record sequence error bit is set, but erpa does not show record sequence error. This is a bug. tape34xx_error_recovery_HWBUG(ti,6); return; } } // Sensing erpa codes switch (sense[3]) { case 0x00: // Everything is fine, but we got a unit check. Report and ignore! PRINT_WARN ("Non-error sense was found. Unit-check will be ignored, expect errors...\n"); return; case 0x21: // Data streaming not operational. Cu switches to interlock mode, we reissue the command. PRINT_WARN ("Data streaming not operational. Switching to interlock-mode! \n"); tape34xx_error_recovery_do_retry(ti); return; case 0x22: // Path equipment check. Might be drive adapter error, buffer error on the lower interface, internal path not useable, or error during cartridge load. // All of the above are not recoverable PRINT_WARN ("A path equipment check occurred. One of the following conditions occurred:\n"); PRINT_WARN ("drive adapter error,buffer error on the lower interface, internal path not useable, error during cartridge load.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x23: // Read data check. Should have been be covered earlier -> Bug! tape34xx_error_recovery_HWBUG(ti,7); return; case 0x24: // Load display check. Load display was command was issued, but the drive is displaying a drive check message. Can be threated as "device end". tape34xx_error_recovery_succeded(ti); return; case 0x25: // Write data check. Should have been covered earlier -> Bug! tape34xx_error_recovery_HWBUG(ti,8); return; case 0x26: // Data check (read opposite). Should have been covered earlier -> Bug! tape34xx_error_recovery_HWBUG(ti,9); return; case 0x27: // Command reject. May indicate illegal channel program or buffer over/underrun. // Since all channel programms are issued by this driver and ought be correct, // we assume a over/underrun situaltion and retry the channel program. tape34xx_error_recovery_do_retry(ti); return; case 0x28: // Write id mark check. Should have beed covered earlier -> bug! tape34xx_error_recovery_HWBUG(ti,10); return; case 0x29: // Function incompatible. Either idrc is on but hardware not capable doing idrc // or a perform subsystem func is issued and the cu is not online. Anyway, this // cannot be recovered and is an I/O error. PRINT_WARN ("Function incompatible. Try to switch off idrc! \n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x2a: // Unsolicited environmental data. An internal counter overflows, we can ignore // this and reissue the cmd. tape34xx_error_recovery_do_retry(ti); return; case 0x2b: // Environmental data present. Indicates either unload completed ok or read buffered // log command completed ok. if (tapestate_get(ti)==TS_RUN_INIT) { // Rewind unload completed ok. tape34xx_error_recovery_succeded(ti); return; } // Since we do not issue read buffered log commands, this should never occur -> bug. tape34xx_error_recovery_HWBUG(ti,11); return; case 0x2c: // Permanent equipment check. cu has tried recovery, but did not succeed. This is an // I/O error. tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x2d: // Data security erase failure. if (tapestate_get(ti)==TS_DSE_INIT) { // report an I/O error tape34xx_error_recovery_has_failed(ti,EIO); return; } // Data security erase failure, but no such command issued. This is a bug. tape34xx_error_recovery_HWBUG(ti,12); return; case 0x2e: // Not capable. This indicates either that the drive fails reading the format id mark // or that that format specified is not supported by the drive. We write a message and // return an I/O error. PRINT_WARN("Drive not capable processing the tape format!"); tape34xx_error_recovery_has_failed(ti,EMEDIUMTYPE); return; case 0x2f: // This erpa is reserved. This is a bug. tape34xx_error_recovery_HWBUG(ti,13); return; case 0x30: // The medium is write protected, while trying to write on it. We'll report this. PRINT_WARN("Medium is write protected!\n"); tape34xx_error_recovery_has_failed(ti,EACCES); return; case 0x31: // Tape void. Should have beed covered ealier -> bug tape34xx_error_recovery_HWBUG(ti,14); return; case 0x32: // Tension loss. We cannot recover this, it's an I/O error. PRINT_WARN("The drive lost tape tension.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x33: // Load Failure. The catridge was not inserted correctly or the tape is not threaded // correctly. We cannot recover this, the user has to reload the catridge. PRINT_WARN("Cartridge load failure. Reload the cartridge and try again.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x34: // Unload failure. The drive cannot maintain tape tension and control tape movement // during an unload operation. PRINT_WARN("Failure during cartridge unload. Please try manually.\n"); if (tapestate_get(ti)!=TS_RUN_INIT) { tape34xx_error_recovery_HWBUG(ti,15); return; } tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x35: // Drive equipment check. One of the following: // - cu cannot recover from a drive detected error // - a check code message is displayed on drive message/load displays // - the cartridge loader does not respond correctly // - a failure occurs during an index, load, or unload cycle PRINT_WARN("Equipment check! Please check the drive and the cartridge loader.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x36: switch (cu_type) { case 0x3480: // This erpa is reserved for 3480 -> BUG tape34xx_error_recovery_HWBUG(ti,16); return; case 0x3490: // End of data. This is a permanent I/O error, which cannot be recovered. // A read-type command has reached the end-of-data mark. tape34xx_error_recovery_has_failed(ti,EIO); return; } case 0x37: // Tape length error. The tape is shorter than reported in the beginning-of-tape data. PRINT_WARN("Tape length error.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x38: // Physical end of tape. A read/write operation reached the physical end of tape. if (tapestate_get(ti)==TS_WRI_INIT || tapestate_get(ti)==TS_DSE_INIT || tapestate_get(ti)==TS_EGA_INIT || tapestate_get(ti)==TS_WTM_INIT){ tape34xx_error_recovery_has_failed(ti,ENOSPC); } else { tape34xx_error_recovery_has_failed(ti,EIO); } return; case 0x39: // Backward at BOT. The drive is at BOT and is requestet to move backward. tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x3a: // Drive switched not ready, but the command needs the drive to be ready. PRINT_WARN("Drive not ready. Turn the ready/not ready switch to ready position and try again.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x3b: // Manual rewind or unload. This causes an I/O error. PRINT_WARN("Medium was rewound or unloaded manually. Expect errors! Please do only use the mtoffl and mtrew ioctl to unload tapes or rewind tapes.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x3c: case 0x3d: case 0x3e: case 0x3f: // These erpas are reserved -> BUG tape34xx_error_recovery_HWBUG(ti,17); return; case 0x40: // Overrun error. This should have been covered earlier -> bug. tape34xx_error_recovery_HWBUG(ti,18); return; case 0x41: // Record sequence error. This should have been covered earlier -> bug. tape34xx_error_recovery_HWBUG(ti,19); return; case 0x42: // Degraded mode. A condition that can cause degraded performace is detected. PRINT_WARN("Subsystem is running in degraded mode. This may compromise your performace.\n"); tape34xx_error_recovery_do_retry(ti); return; case 0x43: // Drive not ready. Probably swith the ready/not ready switch to ready? PRINT_WARN("The drive is not ready. Maybe no medium in?\n"); tape34xx_error_recovery_has_failed(ti,ENOMEDIUM); return; case 0x44: // Locate Block unsuccessfull. We'll report this. if ((tapestate_get(ti)!=TS_BLOCK_INIT) && (tapestate_get(ti)!=TS_LBL_INIT)) { tape34xx_error_recovery_HWBUG(ti,20); // No locate block was issued... return; } tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x45: // The drive is assigned elsewhere [to a different channel path/computer]. PRINT_WARN("The drive is assigned elsewhere.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x46: // Drive not online. Drive may be switched offline, the power supply may be switched off // or the drive address may not be set correctly. PRINT_WARN("The drive is not online."); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x47: // Volume fenced. cu reports volume integrity is lost! PRINT_WARN("Volume fenced. The volume integrity is lost! \n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x48: // Log sense data and retry request. We'll do so... tape34xx_error_recovery_do_retry(ti); return; case 0x49: // Bus out check. A parity check error on the bus was found. PRINT_WARN("Bus out check. A data transfer over the bus was corrupted.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x4a: // Control unit erp failed. We'll report this. PRINT_WARN("The control unit failed recovering an I/O error.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x4b: // Cu and drive incompatible. The drive requests micro-program patches, which are not available on the cu. PRINT_WARN("The drive needs microprogram patches from the control unit, which are not available.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x4c: // Recovered Check-One failure. Cu develops a hardware error, but is able to recover. We'll reissue the command. tape34xx_error_recovery_do_retry(ti); return; case 0x4d: switch (cu_type) { case 0x3480: // This erpa is reserved for 3480 -> bug tape34xx_error_recovery_HWBUG(ti,21); return; case 0x3490: // Resetting event recieved. Since the driver does not support resetting event recovery // (which has to be handled by the I/O Layer), we'll report and retry our command. tape34xx_error_recovery_do_retry(ti); return; } case 0x4e: switch (cu_type) { case 0x3480: // This erpa is reserved for 3480 -> bug. tape34xx_error_recovery_HWBUG(ti,22); return; case 0x3490: // Maximum block size exeeded. This indicates, that the block to be written is larger // than allowed for buffered mode. We'll report this... PRINT_WARN("Maximum block size for buffered mode exceeded.\n"); tape34xx_error_recovery_has_failed(ti,ENOBUFS); return; } case 0x4f: // These erpas are reserved -> bug tape34xx_error_recovery_HWBUG(ti,23); return; case 0x50: // Read buffered log (Overflow). Cu is running in extended beffered log mode, and a counter overflows. // This should never happen, since we're never running in extended buffered log mode -> bug. tape34xx_error_recovery_do_retry(ti); return; case 0x51: // Read buffered log (EOV). EOF processing occurs while the cu is in extended buffered log mode. // This should never happen, since we're never running in extended buffered log mode -> bug. tape34xx_error_recovery_do_retry(ti); return; case 0x52: // End of Volume complete. Rewind unload completed ok. We'll report to the user... if (tapestate_get(ti)!=TS_RUN_INIT) { tape34xx_error_recovery_HWBUG(ti,24); return; } tape34xx_error_recovery_succeded(ti); return; case 0x53: // Global command intercept. We'll have to reissue our command. tape34xx_error_recovery_do_retry(ti); return; case 0x54: // Channel interface recovery (temporary). This can be recovered by reissuing the command. tape34xx_error_recovery_do_retry(ti); return; case 0x55: // Channel interface recovery (permanent). This cannot be recovered, we'll inform the user. PRINT_WARN("A permanent channel interface error occurred.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x56: // Channel protocol error. This cannot be recovered. PRINT_WARN("A channel protocol error occurred.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x57: switch (cu_type) { case 0x3480: // Attention intercept. We have to reissue the command. PRINT_WARN("An attention intercept occurred, which will be recovered.\n"); tape34xx_error_recovery_do_retry(ti); return; case 0x3490: // Global status intercept. We have to reissue the command. PRINT_WARN("An global status intercept was recieved, which will be recovered.\n"); tape34xx_error_recovery_do_retry(ti); return; } case 0x58: case 0x59: // These erpas are reserved -> bug. tape34xx_error_recovery_HWBUG(ti,25); return; case 0x5a: // Tape length incompatible. The tape inserted is too long, // which could cause damage to the tape or the drive. PRINT_WARN("Tape length incompatible [should be IBM Cartridge System Tape]. May cause damage to drive or tape.n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x5b: // Format 3480 XF incompatible if (sense[1]&SENSE_BEGINNING_OF_TAPE) { // Everything is fine. The tape will be overwritten in a different format. tape34xx_error_recovery_do_retry(ti); return; } PRINT_WARN("Tape format is incompatible to the drive, which writes 3480-2 XF.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x5c: // Format 3480-2 XF incompatible PRINT_WARN("Tape format is incompatible to the drive. The drive cannot access 3480-2 XF volumes.\n"); tape34xx_error_recovery_has_failed(ti,EIO); return; case 0x5d: // Tape length violation. PRINT_WARN("Tape length violation [should be IBM Enhanced Capacity Cartridge System Tape]. May cause damage to drive or tape.\n"); tape34xx_error_recovery_has_failed(ti,EMEDIUMTYPE); return; case 0x5e: // Compaction algorithm incompatible. PRINT_WARN("The volume is recorded using an incompatible compaction algorith, which is not supported by the control unit.\n"); tape34xx_error_recovery_has_failed(ti,EMEDIUMTYPE); return; default: // Reserved erpas -> bug tape34xx_error_recovery_HWBUG(ti,26); return; } } void tape34xx_error_recovery_has_failed (tape_info_t* ti,int error_id) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,3,"xerp fail"); debug_text_event (tape_debug_area,3,(((tapestate_get (ti) < TS_SIZE) && (tapestate_get (ti) >= 0)) ? state_verbose[tapestate_get (ti)] : "UNKNOWN")); #endif if ((tapestate_get(ti)!=TS_UNUSED) && (tapestate_get(ti)!=TS_IDLE)) { tape_dump_sense(&ti->devstat); ti->rc = -error_id; ti->wanna_wakeup=1; switch (tapestate_get(ti)) { case TS_REW_RELEASE_INIT: case TS_RFO_INIT: case TS_RBA_INIT: tapestate_set(ti,TS_FAILED); wake_up (&ti->wq); break; case TS_BLOCK_INIT: tapestate_set(ti,TS_FAILED); schedule_tapeblock_exec_IO(ti); break; default: tapestate_set(ti,TS_FAILED); wake_up_interruptible (&ti->wq); } } else { PRINT_WARN("Recieved an unsolicited IRQ.\n"); tape_dump_sense(&ti->devstat); } } void tape34xx_error_recovery_succeded(tape_info_t* ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,3,"xerp done"); debug_text_event (tape_debug_area,3,(((tapestate_get (ti) < TS_SIZE) && (tapestate_get (ti) >= 0)) ? state_verbose[tapestate_get (ti)] : "UNKNOWN")); #endif if ((tapestate_get(ti)!=TS_UNUSED) && (tapestate_get(ti)!=TS_DONE)) { tapestate_event (ti, TE_DONE); } else { PRINT_WARN("Recieved an unsolicited IRQ.\n"); tape_dump_sense(&ti->devstat); } } void tape34xx_error_recovery_do_retry(tape_info_t* ti) { #ifdef TAPE_DEBUG debug_text_event (tape_debug_area,3,"xerp retr"); debug_text_event (tape_debug_area,3,(((tapestate_get (ti) < TS_SIZE) && (tapestate_get (ti) >= 0)) ? state_verbose[tapestate_get (ti)] : "UNKNOWN")); #endif if ((tapestate_get(ti)!=TS_UNUSED) && (tapestate_get(ti)!=TS_IDLE)) { tape_dump_sense(&ti->devstat); while (do_IO (ti->devinfo.irq, ti->cqr->cpaddr, (unsigned long) ti->cqr, 0x00, ti->cqr->options)); } else { PRINT_WARN("Recieved an unsolicited IRQ.\n"); tape_dump_sense(&ti->devstat); } } void tape34xx_error_recovery_read_opposite (tape_info_t* ti) { switch (tapestate_get(ti)) { case TS_RFO_INIT: // We did read forward, but the data could not be read *correctly*. // We will read backward and then skip forward again. ti->cqr=tape34xx_read_opposite(ti,0); if (ti->cqr==NULL) tape34xx_error_recovery_has_failed(ti,EIO); else tape34xx_error_recovery_do_retry(ti); break; case TS_RBA_INIT: // We tried to read forward and backward, but hat no success -> failed. tape34xx_error_recovery_has_failed(ti,EIO); break; case TS_BLOCK_INIT: tape34xx_error_recovery_do_retry(ti); break; default: PRINT_WARN("read_opposite_recovery_called_with_state:%s\n", (((tapestate_get (ti) < TS_SIZE) && (tapestate_get (ti) >= 0)) ? state_verbose[tapestate_get (ti)] : "UNKNOWN")); } } void tape34xx_error_recovery_HWBUG (tape_info_t* ti,int condno) { devstat_t* stat=&ti->devstat; PRINT_WARN("An unexpected condition #%d was caught in tape error recovery.\n",condno); PRINT_WARN("Please report this incident.\n"); PRINT_WARN("State of the tape:%s\n", (((tapestate_get (ti) < TS_SIZE) && (tapestate_get (ti) >= 0)) ? state_verbose[tapestate_get (ti)] : "UNKNOWN")); PRINT_INFO ("Sense data: %02X%02X%02X%02X %02X%02X%02X%02X " " %02X%02X%02X%02X %02X%02X%02X%02X \n", stat->ii.sense.data[0], stat->ii.sense.data[1], stat->ii.sense.data[2], stat->ii.sense.data[3], stat->ii.sense.data[4], stat->ii.sense.data[5], stat->ii.sense.data[6], stat->ii.sense.data[7], stat->ii.sense.data[8], stat->ii.sense.data[9], stat->ii.sense.data[10], stat->ii.sense.data[11], stat->ii.sense.data[12], stat->ii.sense.data[13], stat->ii.sense.data[14], stat->ii.sense.data[15]); PRINT_INFO ("Sense data: %02X%02X%02X%02X %02X%02X%02X%02X " " %02X%02X%02X%02X %02X%02X%02X%02X \n", stat->ii.sense.data[16], stat->ii.sense.data[17], stat->ii.sense.data[18], stat->ii.sense.data[19], stat->ii.sense.data[20], stat->ii.sense.data[21], stat->ii.sense.data[22], stat->ii.sense.data[23], stat->ii.sense.data[24], stat->ii.sense.data[25], stat->ii.sense.data[26], stat->ii.sense.data[27], stat->ii.sense.data[28], stat->ii.sense.data[29], stat->ii.sense.data[30], stat->ii.sense.data[31]); tape34xx_error_recovery_has_failed(ti,EIO); }