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path: root/drivers/s390/char/tape_34xx.c
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Diffstat (limited to 'drivers/s390/char/tape_34xx.c')
-rw-r--r--drivers/s390/char/tape_34xx.c136
1 files changed, 0 insertions, 136 deletions
diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c
index 934ef33..b28de80 100644
--- a/drivers/s390/char/tape_34xx.c
+++ b/drivers/s390/char/tape_34xx.c
@@ -323,20 +323,6 @@ tape_34xx_unit_check(struct tape_device *device, struct tape_request *request,
inhibit_cu_recovery = (*device->modeset_byte & 0x80) ? 1 : 0;
sense = irb->ecw;
-#ifdef CONFIG_S390_TAPE_BLOCK
- if (request->op == TO_BLOCK) {
- /*
- * Recovery for block device requests. Set the block_position
- * to something invalid and retry.
- */
- device->blk_data.block_position = -1;
- if (request->retries-- <= 0)
- return tape_34xx_erp_failed(request, -EIO);
- else
- return tape_34xx_erp_retry(request);
- }
-#endif
-
if (
sense[0] & SENSE_COMMAND_REJECT &&
sense[1] & SENSE_WRITE_PROTECT
@@ -1129,123 +1115,6 @@ tape_34xx_mtseek(struct tape_device *device, int mt_count)
return tape_do_io_free(device, request);
}
-#ifdef CONFIG_S390_TAPE_BLOCK
-/*
- * Tape block read for 34xx.
- */
-static struct tape_request *
-tape_34xx_bread(struct tape_device *device, struct request *req)
-{
- struct tape_request *request;
- struct ccw1 *ccw;
- int count = 0;
- unsigned off;
- char *dst;
- struct bio_vec *bv;
- struct req_iterator iter;
- struct tape_34xx_block_id * start_block;
-
- DBF_EVENT(6, "xBREDid:");
-
- /* Count the number of blocks for the request. */
- rq_for_each_segment(bv, req, iter)
- count += bv->bv_len >> (TAPEBLOCK_HSEC_S2B + 9);
-
- /* Allocate the ccw request. */
- request = tape_alloc_request(3+count+1, 8);
- if (IS_ERR(request))
- return request;
-
- /* Setup ccws. */
- request->op = TO_BLOCK;
- start_block = (struct tape_34xx_block_id *) request->cpdata;
- start_block->block = blk_rq_pos(req) >> TAPEBLOCK_HSEC_S2B;
- DBF_EVENT(6, "start_block = %i\n", start_block->block);
-
- ccw = request->cpaddr;
- ccw = tape_ccw_cc(ccw, MODE_SET_DB, 1, device->modeset_byte);
-
- /*
- * We always setup a nop after the mode set ccw. This slot is
- * used in tape_std_check_locate to insert a locate ccw if the
- * current tape position doesn't match the start block to be read.
- * The second nop will be filled with a read block id which is in
- * turn used by tape_34xx_free_bread to populate the segment bid
- * table.
- */
- ccw = tape_ccw_cc(ccw, NOP, 0, NULL);
- ccw = tape_ccw_cc(ccw, NOP, 0, NULL);
-
- rq_for_each_segment(bv, req, iter) {
- dst = kmap(bv->bv_page) + bv->bv_offset;
- for (off = 0; off < bv->bv_len; off += TAPEBLOCK_HSEC_SIZE) {
- ccw->flags = CCW_FLAG_CC;
- ccw->cmd_code = READ_FORWARD;
- ccw->count = TAPEBLOCK_HSEC_SIZE;
- set_normalized_cda(ccw, (void*) __pa(dst));
- ccw++;
- dst += TAPEBLOCK_HSEC_SIZE;
- }
- }
-
- ccw = tape_ccw_end(ccw, NOP, 0, NULL);
- DBF_EVENT(6, "xBREDccwg\n");
- return request;
-}
-
-static void
-tape_34xx_free_bread (struct tape_request *request)
-{
- struct ccw1* ccw;
-
- ccw = request->cpaddr;
- if ((ccw + 2)->cmd_code == READ_BLOCK_ID) {
- struct {
- struct tape_34xx_block_id cbid;
- struct tape_34xx_block_id dbid;
- } __attribute__ ((packed)) *rbi_data;
-
- rbi_data = request->cpdata;
-
- if (request->device)
- tape_34xx_add_sbid(request->device, rbi_data->cbid);
- }
-
- /* Last ccw is a nop and doesn't need clear_normalized_cda */
- for (; ccw->flags & CCW_FLAG_CC; ccw++)
- if (ccw->cmd_code == READ_FORWARD)
- clear_normalized_cda(ccw);
- tape_free_request(request);
-}
-
-/*
- * check_locate is called just before the tape request is passed to
- * the common io layer for execution. It has to check the current
- * tape position and insert a locate ccw if it doesn't match the
- * start block for the request.
- */
-static void
-tape_34xx_check_locate(struct tape_device *device, struct tape_request *request)
-{
- struct tape_34xx_block_id * start_block;
-
- start_block = (struct tape_34xx_block_id *) request->cpdata;
- if (start_block->block == device->blk_data.block_position)
- return;
-
- DBF_LH(4, "Block seek(%06d+%06d)\n", start_block->block, device->bof);
- start_block->wrap = 0;
- start_block->segment = 1;
- start_block->format = (*device->modeset_byte & 0x08) ?
- TAPE34XX_FMT_3480_XF :
- TAPE34XX_FMT_3480;
- start_block->block = start_block->block + device->bof;
- tape_34xx_merge_sbid(device, start_block);
- tape_ccw_cc(request->cpaddr + 1, LOCATE, 4, request->cpdata);
- tape_ccw_cc(request->cpaddr + 2, READ_BLOCK_ID, 8, request->cpdata);
-}
-#endif
-
/*
* List of 3480/3490 magnetic tape commands.
*/
@@ -1295,11 +1164,6 @@ static struct tape_discipline tape_discipline_34xx = {
.irq = tape_34xx_irq,
.read_block = tape_std_read_block,
.write_block = tape_std_write_block,
-#ifdef CONFIG_S390_TAPE_BLOCK
- .bread = tape_34xx_bread,
- .free_bread = tape_34xx_free_bread,
- .check_locate = tape_34xx_check_locate,
-#endif
.ioctl_fn = tape_34xx_ioctl,
.mtop_array = tape_34xx_mtop
};
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