3  *    standard tape device functions for ibm tapes.
40 	struct tape_device *	device = request->device;  in tape_std_assign_timeout()  local
43 	BUG_ON(!device);  in tape_std_assign_timeout()
45 	DBF_EVENT(3, "%08x: Assignment timeout. Device busy.\n",  in tape_std_assign_timeout()
46 			device->cdev_id);  in tape_std_assign_timeout()
47 	rc = tape_cancel_io(device, request);  in tape_std_assign_timeout()
50 			  "%i\n", device->cdev_id, rc);  in tape_std_assign_timeout()
54 tape_std_assign(struct tape_device *device)  in tape_std_assign()  argument
68 	 * The assign command sometimes blocks if the device is assigned  in tape_std_assign()
75 	rc = tape_do_io_interruptible(device, request);  in tape_std_assign()
80 		DBF_EVENT(3, "%08x: assign failed - device might be busy\n",  in tape_std_assign()
81 			device->cdev_id);  in tape_std_assign()
83 		DBF_EVENT(3, "%08x: Tape assigned\n", device->cdev_id);  in tape_std_assign()
93 tape_std_unassign (struct tape_device *device)  in tape_std_unassign()  argument
98 	if (device->tape_state == TS_NOT_OPER) {  in tape_std_unassign()
99 		DBF_EVENT(3, "(%08x): Can't unassign device\n",  in tape_std_unassign()
100 			device->cdev_id);  in tape_std_unassign()
112 	if ((rc = tape_do_io(device, request)) != 0) {  in tape_std_unassign()
113 		DBF_EVENT(3, "%08x: Unassign failed\n", device->cdev_id);  in tape_std_unassign()
115 		DBF_EVENT(3, "%08x: Tape unassigned\n", device->cdev_id);  in tape_std_unassign()
125 tape_std_display(struct tape_device *device, struct display_struct *disp)  in tape_std_display()  argument
146 	rc = tape_do_io_interruptible(device, request);  in tape_std_display()
155 tape_std_read_block_id(struct tape_device *device, __u64 *id)  in tape_std_read_block_id()  argument
165 	tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);  in tape_std_read_block_id()
169 	rc = tape_do_io(device, request);  in tape_std_read_block_id()
178 tape_std_terminate_write(struct tape_device *device)  in tape_std_terminate_write()  argument
182 	if(device->required_tapemarks == 0)  in tape_std_terminate_write()
185 	DBF_LH(5, "tape%d: terminate write %dxEOF\n", device->first_minor,  in tape_std_terminate_write()
186 		device->required_tapemarks);  in tape_std_terminate_write()
188 	rc = tape_mtop(device, MTWEOF, device->required_tapemarks);  in tape_std_terminate_write()
192 	device->required_tapemarks = 0;  in tape_std_terminate_write()
193 	return tape_mtop(device, MTBSR, 1);  in tape_std_terminate_write()
202 tape_std_mtload(struct tape_device *device, int count)  in tape_std_mtload()  argument
204 	return wait_event_interruptible(device->state_change_wq,  in tape_std_mtload()
205 		(device->medium_state == MS_LOADED));  in tape_std_mtload()
212 tape_std_mtsetblk(struct tape_device *device, int count)  in tape_std_mtsetblk()  argument
223 		device->char_data.block_size = 0;  in tape_std_mtsetblk()
226 	if (device->char_data.idal_buf != NULL &&  in tape_std_mtsetblk()
227 	    device->char_data.idal_buf->size == count)  in tape_std_mtsetblk()
241 	if (device->char_data.idal_buf != NULL)  in tape_std_mtsetblk()
242 		idal_buffer_free(device->char_data.idal_buf);  in tape_std_mtsetblk()
243 	device->char_data.idal_buf = new;  in tape_std_mtsetblk()
244 	device->char_data.block_size = count;  in tape_std_mtsetblk()
246 	DBF_LH(6, "new blocksize is %d\n", device->char_data.block_size);  in tape_std_mtsetblk()
255 tape_std_mtreset(struct tape_device *device, int count)  in tape_std_mtreset()  argument
258 	device->char_data.block_size = 0;  in tape_std_mtreset()
267 tape_std_mtfsf(struct tape_device *device, int mt_count)  in tape_std_mtfsf()  argument
278 			  device->modeset_byte);  in tape_std_mtfsf()
283 	return tape_do_io_free(device, request);  in tape_std_mtfsf()
291 tape_std_mtfsr(struct tape_device *device, int mt_count)  in tape_std_mtfsr()  argument
303 			  device->modeset_byte);  in tape_std_mtfsr()
308 	rc = tape_do_io(device, request);  in tape_std_mtfsr()
323 tape_std_mtbsr(struct tape_device *device, int mt_count)  in tape_std_mtbsr()  argument
335 			  device->modeset_byte);  in tape_std_mtbsr()
340 	rc = tape_do_io(device, request);  in tape_std_mtbsr()
354 tape_std_mtweof(struct tape_device *device, int mt_count)  in tape_std_mtweof()  argument
365 			  device->modeset_byte);  in tape_std_mtweof()
370 	return tape_do_io_free(device, request);  in tape_std_mtweof()
379 tape_std_mtbsfm(struct tape_device *device, int mt_count)  in tape_std_mtbsfm()  argument
390 			  device->modeset_byte);  in tape_std_mtbsfm()
395 	return tape_do_io_free(device, request);  in tape_std_mtbsfm()
403 tape_std_mtbsf(struct tape_device *device, int mt_count)  in tape_std_mtbsf()  argument
415 			  device->modeset_byte);  in tape_std_mtbsf()
419 	rc = tape_do_io_free(device, request);  in tape_std_mtbsf()
421 		rc = tape_mtop(device, MTFSR, 1);  in tape_std_mtbsf()
434 tape_std_mtfsfm(struct tape_device *device, int mt_count)  in tape_std_mtfsfm()  argument
446 			  device->modeset_byte);  in tape_std_mtfsfm()
450 	rc = tape_do_io_free(device, request);  in tape_std_mtfsfm()
452 		rc = tape_mtop(device, MTBSR, 1);  in tape_std_mtfsfm()
464 tape_std_mtrew(struct tape_device *device, int mt_count)  in tape_std_mtrew()  argument
474 		    device->modeset_byte);  in tape_std_mtrew()
479 	return tape_do_io_free(device, request);  in tape_std_mtrew()
487 tape_std_mtoffl(struct tape_device *device, int mt_count)  in tape_std_mtoffl()  argument
496 	tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);  in tape_std_mtoffl()
501 	return tape_do_io_free(device, request);  in tape_std_mtoffl()
508 tape_std_mtnop(struct tape_device *device, int mt_count)  in tape_std_mtnop()  argument
517 	tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);  in tape_std_mtnop()
520 	return tape_do_io_free(device, request);  in tape_std_mtnop()
529 tape_std_mteom(struct tape_device *device, int mt_count)  in tape_std_mteom()  argument
536 	if ((rc = tape_mtop(device, MTREW, 1)) < 0)  in tape_std_mteom()
546 		if ((rc = tape_mtop(device, MTFSF, 1)) < 0)  in tape_std_mteom()
548 		if ((rc = tape_mtop(device, MTFSR, 1)) < 0)  in tape_std_mteom()
552 	return tape_mtop(device, MTBSR, 1);  in tape_std_mteom()
559 tape_std_mtreten(struct tape_device *device, int mt_count)  in tape_std_mtreten()  argument
568 	tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);  in tape_std_mtreten()
573 	tape_do_io_interruptible(device, request);  in tape_std_mtreten()
575 	return tape_mtop(device, MTREW, 1);  in tape_std_mtreten()
582 tape_std_mterase(struct tape_device *device, int mt_count)  in tape_std_mterase()  argument
591 	tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);  in tape_std_mterase()
599 	return tape_do_io_free(device, request);  in tape_std_mterase()
606 tape_std_mtunload(struct tape_device *device, int mt_count)  in tape_std_mtunload()  argument
608 	return tape_mtop(device, MTOFFL, mt_count);  in tape_std_mtunload()
616 tape_std_mtcompression(struct tape_device *device, int mt_count)  in tape_std_mtcompression()  argument
630 		*device->modeset_byte &= ~0x08;  in tape_std_mtcompression()
632 		*device->modeset_byte |= 0x08;  in tape_std_mtcompression()
633 	tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);  in tape_std_mtcompression()
636 	return tape_do_io_free(device, request);  in tape_std_mtcompression()
643 tape_std_read_block(struct tape_device *device, size_t count)  in tape_std_read_block()  argument
657 	tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);  in tape_std_read_block()
659 			  device->char_data.idal_buf);  in tape_std_read_block()
668 tape_std_read_backward(struct tape_device *device, struct tape_request *request)  in tape_std_read_backward()  argument
676 	tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);  in tape_std_read_backward()
678 			 device->char_data.idal_buf);  in tape_std_read_backward()
687 tape_std_write_block(struct tape_device *device, size_t count)  in tape_std_write_block()  argument
697 	tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);  in tape_std_write_block()
699 			  device->char_data.idal_buf);  in tape_std_write_block()
708 tape_std_process_eov(struct tape_device *device)  in tape_std_process_eov()  argument
714 	if (tape_mtop(device, MTBSR, 1) == 0 &&  in tape_std_process_eov()
715 	    tape_mtop(device, MTWEOF, 1) == 0) {  in tape_std_process_eov()
716 		tape_mtop(device, MTBSR, 1);  in tape_std_process_eov()