Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / s390 / char / tape_std.c
diff --git a/kernel/drivers/s390/char/tape_std.c b/kernel/drivers/s390/char/tape_std.c
new file mode 100644 (file)
index 0000000..3478e19
--- /dev/null
@@ -0,0 +1,750 @@
+/*
+ *    standard tape device functions for ibm tapes.
+ *
+ *  S390 and zSeries version
+ *    Copyright IBM Corp. 2001, 2002
+ *    Author(s): Carsten Otte <cotte@de.ibm.com>
+ *              Michael Holzheu <holzheu@de.ibm.com>
+ *              Tuan Ngo-Anh <ngoanh@de.ibm.com>
+ *              Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *              Stefan Bader <shbader@de.ibm.com>
+ */
+
+#define KMSG_COMPONENT "tape"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/bio.h>
+#include <linux/timer.h>
+
+#include <asm/types.h>
+#include <asm/idals.h>
+#include <asm/ebcdic.h>
+#include <asm/tape390.h>
+
+#define TAPE_DBF_AREA  tape_core_dbf
+
+#include "tape.h"
+#include "tape_std.h"
+
+/*
+ * tape_std_assign
+ */
+static void
+tape_std_assign_timeout(unsigned long data)
+{
+       struct tape_request *   request;
+       struct tape_device *    device;
+       int rc;
+
+       request = (struct tape_request *) data;
+       device = request->device;
+       BUG_ON(!device);
+
+       DBF_EVENT(3, "%08x: Assignment timeout. Device busy.\n",
+                       device->cdev_id);
+       rc = tape_cancel_io(device, request);
+       if(rc)
+               DBF_EVENT(3, "(%08x): Assign timeout: Cancel failed with rc = "
+                         "%i\n", device->cdev_id, rc);
+}
+
+int
+tape_std_assign(struct tape_device *device)
+{
+       int                  rc;
+       struct timer_list    timeout;
+       struct tape_request *request;
+
+       request = tape_alloc_request(2, 11);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+
+       request->op = TO_ASSIGN;
+       tape_ccw_cc(request->cpaddr, ASSIGN, 11, request->cpdata);
+       tape_ccw_end(request->cpaddr + 1, NOP, 0, NULL);
+
+       /*
+        * The assign command sometimes blocks if the device is assigned
+        * to another host (actually this shouldn't happen but it does).
+        * So we set up a timeout for this call.
+        */
+       init_timer_on_stack(&timeout);
+       timeout.function = tape_std_assign_timeout;
+       timeout.data     = (unsigned long) request;
+       timeout.expires  = jiffies + 2 * HZ;
+       add_timer(&timeout);
+
+       rc = tape_do_io_interruptible(device, request);
+
+       del_timer_sync(&timeout);
+       destroy_timer_on_stack(&timeout);
+
+       if (rc != 0) {
+               DBF_EVENT(3, "%08x: assign failed - device might be busy\n",
+                       device->cdev_id);
+       } else {
+               DBF_EVENT(3, "%08x: Tape assigned\n", device->cdev_id);
+       }
+       tape_free_request(request);
+       return rc;
+}
+
+/*
+ * tape_std_unassign
+ */
+int
+tape_std_unassign (struct tape_device *device)
+{
+       int                  rc;
+       struct tape_request *request;
+
+       if (device->tape_state == TS_NOT_OPER) {
+               DBF_EVENT(3, "(%08x): Can't unassign device\n",
+                       device->cdev_id);
+               return -EIO;
+       }
+
+       request = tape_alloc_request(2, 11);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+
+       request->op = TO_UNASSIGN;
+       tape_ccw_cc(request->cpaddr, UNASSIGN, 11, request->cpdata);
+       tape_ccw_end(request->cpaddr + 1, NOP, 0, NULL);
+
+       if ((rc = tape_do_io(device, request)) != 0) {
+               DBF_EVENT(3, "%08x: Unassign failed\n", device->cdev_id);
+       } else {
+               DBF_EVENT(3, "%08x: Tape unassigned\n", device->cdev_id);
+       }
+       tape_free_request(request);
+       return rc;
+}
+
+/*
+ * TAPE390_DISPLAY: Show a string on the tape display.
+ */
+int
+tape_std_display(struct tape_device *device, struct display_struct *disp)
+{
+       struct tape_request *request;
+       int rc;
+
+       request = tape_alloc_request(2, 17);
+       if (IS_ERR(request)) {
+               DBF_EVENT(3, "TAPE: load display failed\n");
+               return PTR_ERR(request);
+       }
+       request->op = TO_DIS;
+
+       *(unsigned char *) request->cpdata = disp->cntrl;
+       DBF_EVENT(5, "TAPE: display cntrl=%04x\n", disp->cntrl);
+       memcpy(((unsigned char *) request->cpdata) + 1, disp->message1, 8);
+       memcpy(((unsigned char *) request->cpdata) + 9, disp->message2, 8);
+       ASCEBC(((unsigned char*) request->cpdata) + 1, 16);
+
+       tape_ccw_cc(request->cpaddr, LOAD_DISPLAY, 17, request->cpdata);
+       tape_ccw_end(request->cpaddr + 1, NOP, 0, NULL);
+
+       rc = tape_do_io_interruptible(device, request);
+       tape_free_request(request);
+       return rc;
+}
+
+/*
+ * Read block id.
+ */
+int
+tape_std_read_block_id(struct tape_device *device, __u64 *id)
+{
+       struct tape_request *request;
+       int rc;
+
+       request = tape_alloc_request(3, 8);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_RBI;
+       /* setup ccws */
+       tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
+       tape_ccw_cc(request->cpaddr + 1, READ_BLOCK_ID, 8, request->cpdata);
+       tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL);
+       /* execute it */
+       rc = tape_do_io(device, request);
+       if (rc == 0)
+               /* Get result from read buffer. */
+               *id = *(__u64 *) request->cpdata;
+       tape_free_request(request);
+       return rc;
+}
+
+int
+tape_std_terminate_write(struct tape_device *device)
+{
+       int rc;
+
+       if(device->required_tapemarks == 0)
+               return 0;
+
+       DBF_LH(5, "tape%d: terminate write %dxEOF\n", device->first_minor,
+               device->required_tapemarks);
+
+       rc = tape_mtop(device, MTWEOF, device->required_tapemarks);
+       if (rc)
+               return rc;
+
+       device->required_tapemarks = 0;
+       return tape_mtop(device, MTBSR, 1);
+}
+
+/*
+ * MTLOAD: Loads the tape.
+ * The default implementation just wait until the tape medium state changes
+ * to MS_LOADED.
+ */
+int
+tape_std_mtload(struct tape_device *device, int count)
+{
+       return wait_event_interruptible(device->state_change_wq,
+               (device->medium_state == MS_LOADED));
+}
+
+/*
+ * MTSETBLK: Set block size.
+ */
+int
+tape_std_mtsetblk(struct tape_device *device, int count)
+{
+       struct idal_buffer *new;
+
+       DBF_LH(6, "tape_std_mtsetblk(%d)\n", count);
+       if (count <= 0) {
+               /*
+                * Just set block_size to 0. tapechar_read/tapechar_write
+                * will realloc the idal buffer if a bigger one than the
+                * current is needed.
+                */
+               device->char_data.block_size = 0;
+               return 0;
+       }
+       if (device->char_data.idal_buf != NULL &&
+           device->char_data.idal_buf->size == count)
+               /* We already have a idal buffer of that size. */
+               return 0;
+
+       if (count > MAX_BLOCKSIZE) {
+               DBF_EVENT(3, "Invalid block size (%d > %d) given.\n",
+                       count, MAX_BLOCKSIZE);
+               return -EINVAL;
+       }
+
+       /* Allocate a new idal buffer. */
+       new = idal_buffer_alloc(count, 0);
+       if (IS_ERR(new))
+               return -ENOMEM;
+       if (device->char_data.idal_buf != NULL)
+               idal_buffer_free(device->char_data.idal_buf);
+       device->char_data.idal_buf = new;
+       device->char_data.block_size = count;
+
+       DBF_LH(6, "new blocksize is %d\n", device->char_data.block_size);
+
+       return 0;
+}
+
+/*
+ * MTRESET: Set block size to 0.
+ */
+int
+tape_std_mtreset(struct tape_device *device, int count)
+{
+       DBF_EVENT(6, "TCHAR:devreset:\n");
+       device->char_data.block_size = 0;
+       return 0;
+}
+
+/*
+ * MTFSF: Forward space over 'count' file marks. The tape is positioned
+ * at the EOT (End of Tape) side of the file mark.
+ */
+int
+tape_std_mtfsf(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+       struct ccw1 *ccw;
+
+       request = tape_alloc_request(mt_count + 2, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_FSF;
+       /* setup ccws */
+       ccw = tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1,
+                         device->modeset_byte);
+       ccw = tape_ccw_repeat(ccw, FORSPACEFILE, mt_count);
+       ccw = tape_ccw_end(ccw, NOP, 0, NULL);
+
+       /* execute it */
+       return tape_do_io_free(device, request);
+}
+
+/*
+ * MTFSR: Forward space over 'count' tape blocks (blocksize is set
+ * via MTSETBLK.
+ */
+int
+tape_std_mtfsr(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+       struct ccw1 *ccw;
+       int rc;
+
+       request = tape_alloc_request(mt_count + 2, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_FSB;
+       /* setup ccws */
+       ccw = tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1,
+                         device->modeset_byte);
+       ccw = tape_ccw_repeat(ccw, FORSPACEBLOCK, mt_count);
+       ccw = tape_ccw_end(ccw, NOP, 0, NULL);
+
+       /* execute it */
+       rc = tape_do_io(device, request);
+       if (rc == 0 && request->rescnt > 0) {
+               DBF_LH(3, "FSR over tapemark\n");
+               rc = 1;
+       }
+       tape_free_request(request);
+
+       return rc;
+}
+
+/*
+ * MTBSR: Backward space over 'count' tape blocks.
+ * (blocksize is set via MTSETBLK.
+ */
+int
+tape_std_mtbsr(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+       struct ccw1 *ccw;
+       int rc;
+
+       request = tape_alloc_request(mt_count + 2, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_BSB;
+       /* setup ccws */
+       ccw = tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1,
+                         device->modeset_byte);
+       ccw = tape_ccw_repeat(ccw, BACKSPACEBLOCK, mt_count);
+       ccw = tape_ccw_end(ccw, NOP, 0, NULL);
+
+       /* execute it */
+       rc = tape_do_io(device, request);
+       if (rc == 0 && request->rescnt > 0) {
+               DBF_LH(3, "BSR over tapemark\n");
+               rc = 1;
+       }
+       tape_free_request(request);
+
+       return rc;
+}
+
+/*
+ * MTWEOF: Write 'count' file marks at the current position.
+ */
+int
+tape_std_mtweof(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+       struct ccw1 *ccw;
+
+       request = tape_alloc_request(mt_count + 2, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_WTM;
+       /* setup ccws */
+       ccw = tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1,
+                         device->modeset_byte);
+       ccw = tape_ccw_repeat(ccw, WRITETAPEMARK, mt_count);
+       ccw = tape_ccw_end(ccw, NOP, 0, NULL);
+
+       /* execute it */
+       return tape_do_io_free(device, request);
+}
+
+/*
+ * MTBSFM: Backward space over 'count' file marks.
+ * The tape is positioned at the BOT (Begin Of Tape) side of the
+ * last skipped file mark.
+ */
+int
+tape_std_mtbsfm(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+       struct ccw1 *ccw;
+
+       request = tape_alloc_request(mt_count + 2, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_BSF;
+       /* setup ccws */
+       ccw = tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1,
+                         device->modeset_byte);
+       ccw = tape_ccw_repeat(ccw, BACKSPACEFILE, mt_count);
+       ccw = tape_ccw_end(ccw, NOP, 0, NULL);
+
+       /* execute it */
+       return tape_do_io_free(device, request);
+}
+
+/*
+ * MTBSF: Backward space over 'count' file marks. The tape is positioned at
+ * the EOT (End of Tape) side of the last skipped file mark.
+ */
+int
+tape_std_mtbsf(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+       struct ccw1 *ccw;
+       int rc;
+
+       request = tape_alloc_request(mt_count + 2, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_BSF;
+       /* setup ccws */
+       ccw = tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1,
+                         device->modeset_byte);
+       ccw = tape_ccw_repeat(ccw, BACKSPACEFILE, mt_count);
+       ccw = tape_ccw_end(ccw, NOP, 0, NULL);
+       /* execute it */
+       rc = tape_do_io_free(device, request);
+       if (rc == 0) {
+               rc = tape_mtop(device, MTFSR, 1);
+               if (rc > 0)
+                       rc = 0;
+       }
+       return rc;
+}
+
+/*
+ * MTFSFM: Forward space over 'count' file marks.
+ * The tape is positioned at the BOT (Begin Of Tape) side
+ * of the last skipped file mark.
+ */
+int
+tape_std_mtfsfm(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+       struct ccw1 *ccw;
+       int rc;
+
+       request = tape_alloc_request(mt_count + 2, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_FSF;
+       /* setup ccws */
+       ccw = tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1,
+                         device->modeset_byte);
+       ccw = tape_ccw_repeat(ccw, FORSPACEFILE, mt_count);
+       ccw = tape_ccw_end(ccw, NOP, 0, NULL);
+       /* execute it */
+       rc = tape_do_io_free(device, request);
+       if (rc == 0) {
+               rc = tape_mtop(device, MTBSR, 1);
+               if (rc > 0)
+                       rc = 0;
+       }
+
+       return rc;
+}
+
+/*
+ * MTREW: Rewind the tape.
+ */
+int
+tape_std_mtrew(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+
+       request = tape_alloc_request(3, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_REW;
+       /* setup ccws */
+       tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1,
+                   device->modeset_byte);
+       tape_ccw_cc(request->cpaddr + 1, REWIND, 0, NULL);
+       tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL);
+
+       /* execute it */
+       return tape_do_io_free(device, request);
+}
+
+/*
+ * MTOFFL: Rewind the tape and put the drive off-line.
+ * Implement 'rewind unload'
+ */
+int
+tape_std_mtoffl(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+
+       request = tape_alloc_request(3, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_RUN;
+       /* setup ccws */
+       tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
+       tape_ccw_cc(request->cpaddr + 1, REWIND_UNLOAD, 0, NULL);
+       tape_ccw_end(request->cpaddr + 2, NOP, 0, NULL);
+
+       /* execute it */
+       return tape_do_io_free(device, request);
+}
+
+/*
+ * MTNOP: 'No operation'.
+ */
+int
+tape_std_mtnop(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+
+       request = tape_alloc_request(2, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_NOP;
+       /* setup ccws */
+       tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
+       tape_ccw_end(request->cpaddr + 1, NOP, 0, NULL);
+       /* execute it */
+       return tape_do_io_free(device, request);
+}
+
+/*
+ * 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.
+ */
+int
+tape_std_mteom(struct tape_device *device, int mt_count)
+{
+       int rc;
+
+       /*
+        * Seek from the beginning of tape (rewind).
+        */
+       if ((rc = tape_mtop(device, MTREW, 1)) < 0)
+               return rc;
+
+       /*
+        * The logical end of volume is given by two sewuential tapemarks.
+        * Look for this by skipping to the next file (over one tapemark)
+        * and then test for another one (fsr returns 1 if a tapemark was
+        * encountered).
+        */
+       do {
+               if ((rc = tape_mtop(device, MTFSF, 1)) < 0)
+                       return rc;
+               if ((rc = tape_mtop(device, MTFSR, 1)) < 0)
+                       return rc;
+       } while (rc == 0);
+
+       return tape_mtop(device, MTBSR, 1);
+}
+
+/*
+ * MTRETEN: Retension the tape, i.e. forward space to end of tape and rewind.
+ */
+int
+tape_std_mtreten(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+
+       request = tape_alloc_request(4, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_FSF;
+       /* setup ccws */
+       tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
+       tape_ccw_cc(request->cpaddr + 1,FORSPACEFILE, 0, NULL);
+       tape_ccw_cc(request->cpaddr + 2, NOP, 0, NULL);
+       tape_ccw_end(request->cpaddr + 3, CCW_CMD_TIC, 0, request->cpaddr);
+       /* execute it, MTRETEN rc gets ignored */
+       tape_do_io_interruptible(device, request);
+       tape_free_request(request);
+       return tape_mtop(device, MTREW, 1);
+}
+
+/*
+ * MTERASE: erases the tape.
+ */
+int
+tape_std_mterase(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+
+       request = tape_alloc_request(6, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_DSE;
+       /* setup ccws */
+       tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
+       tape_ccw_cc(request->cpaddr + 1, REWIND, 0, NULL);
+       tape_ccw_cc(request->cpaddr + 2, ERASE_GAP, 0, NULL);
+       tape_ccw_cc(request->cpaddr + 3, DATA_SEC_ERASE, 0, NULL);
+       tape_ccw_cc(request->cpaddr + 4, REWIND, 0, NULL);
+       tape_ccw_end(request->cpaddr + 5, NOP, 0, NULL);
+
+       /* execute it */
+       return tape_do_io_free(device, request);
+}
+
+/*
+ * MTUNLOAD: Rewind the tape and unload it.
+ */
+int
+tape_std_mtunload(struct tape_device *device, int mt_count)
+{
+       return tape_mtop(device, MTOFFL, mt_count);
+}
+
+/*
+ * MTCOMPRESSION: used to enable compression.
+ * Sets the IDRC on/off.
+ */
+int
+tape_std_mtcompression(struct tape_device *device, int mt_count)
+{
+       struct tape_request *request;
+
+       if (mt_count < 0 || mt_count > 1) {
+               DBF_EXCEPTION(6, "xcom parm\n");
+               return -EINVAL;
+       }
+       request = tape_alloc_request(2, 0);
+       if (IS_ERR(request))
+               return PTR_ERR(request);
+       request->op = TO_NOP;
+       /* setup ccws */
+       if (mt_count == 0)
+               *device->modeset_byte &= ~0x08;
+       else
+               *device->modeset_byte |= 0x08;
+       tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
+       tape_ccw_end(request->cpaddr + 1, NOP, 0, NULL);
+       /* execute it */
+       return tape_do_io_free(device, request);
+}
+
+/*
+ * Read Block
+ */
+struct tape_request *
+tape_std_read_block(struct tape_device *device, size_t count)
+{
+       struct tape_request *request;
+
+       /*
+        * We have to alloc 4 ccws in order to be able to transform request
+        * into a read backward request in error case.
+        */
+       request = tape_alloc_request(4, 0);
+       if (IS_ERR(request)) {
+               DBF_EXCEPTION(6, "xrbl fail");
+               return request;
+       }
+       request->op = TO_RFO;
+       tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
+       tape_ccw_end_idal(request->cpaddr + 1, READ_FORWARD,
+                         device->char_data.idal_buf);
+       DBF_EVENT(6, "xrbl ccwg\n");
+       return request;
+}
+
+/*
+ * Read Block backward transformation function.
+ */
+void
+tape_std_read_backward(struct tape_device *device, struct tape_request *request)
+{
+       /*
+        * We have allocated 4 ccws in tape_std_read, so we can now
+        * transform the request to a read backward, followed by a
+        * forward space block.
+        */
+       request->op = TO_RBA;
+       tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
+       tape_ccw_cc_idal(request->cpaddr + 1, READ_BACKWARD,
+                        device->char_data.idal_buf);
+       tape_ccw_cc(request->cpaddr + 2, FORSPACEBLOCK, 0, NULL);
+       tape_ccw_end(request->cpaddr + 3, NOP, 0, NULL);
+       DBF_EVENT(6, "xrop ccwg");}
+
+/*
+ * Write Block
+ */
+struct tape_request *
+tape_std_write_block(struct tape_device *device, size_t count)
+{
+       struct tape_request *request;
+
+       request = tape_alloc_request(2, 0);
+       if (IS_ERR(request)) {
+               DBF_EXCEPTION(6, "xwbl fail\n");
+               return request;
+       }
+       request->op = TO_WRI;
+       tape_ccw_cc(request->cpaddr, MODE_SET_DB, 1, device->modeset_byte);
+       tape_ccw_end_idal(request->cpaddr + 1, WRITE_CMD,
+                         device->char_data.idal_buf);
+       DBF_EVENT(6, "xwbl ccwg\n");
+       return request;
+}
+
+/*
+ * This routine is called by frontend after an ENOSP on write
+ */
+void
+tape_std_process_eov(struct tape_device *device)
+{
+       /*
+        * End of volume: We have to backspace the last written record, then
+        * we TRY to write a tapemark and then backspace over the written TM
+        */
+       if (tape_mtop(device, MTBSR, 1) == 0 &&
+           tape_mtop(device, MTWEOF, 1) == 0) {
+               tape_mtop(device, MTBSR, 1);
+       }
+}
+
+EXPORT_SYMBOL(tape_std_assign);
+EXPORT_SYMBOL(tape_std_unassign);
+EXPORT_SYMBOL(tape_std_display);
+EXPORT_SYMBOL(tape_std_read_block_id);
+EXPORT_SYMBOL(tape_std_mtload);
+EXPORT_SYMBOL(tape_std_mtsetblk);
+EXPORT_SYMBOL(tape_std_mtreset);
+EXPORT_SYMBOL(tape_std_mtfsf);
+EXPORT_SYMBOL(tape_std_mtfsr);
+EXPORT_SYMBOL(tape_std_mtbsr);
+EXPORT_SYMBOL(tape_std_mtweof);
+EXPORT_SYMBOL(tape_std_mtbsfm);
+EXPORT_SYMBOL(tape_std_mtbsf);
+EXPORT_SYMBOL(tape_std_mtfsfm);
+EXPORT_SYMBOL(tape_std_mtrew);
+EXPORT_SYMBOL(tape_std_mtoffl);
+EXPORT_SYMBOL(tape_std_mtnop);
+EXPORT_SYMBOL(tape_std_mteom);
+EXPORT_SYMBOL(tape_std_mtreten);
+EXPORT_SYMBOL(tape_std_mterase);
+EXPORT_SYMBOL(tape_std_mtunload);
+EXPORT_SYMBOL(tape_std_mtcompression);
+EXPORT_SYMBOL(tape_std_read_block);
+EXPORT_SYMBOL(tape_std_read_backward);
+EXPORT_SYMBOL(tape_std_write_block);
+EXPORT_SYMBOL(tape_std_process_eov);