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zipl/tape2dump: Remove load display command

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Load Display (LDD) X'9F' is still accepted by the Virtual Tape Server
(VTS) but does not perform any action. Remove code that still uses this
command in tape2dump.c.

Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Jan Höppner
2026-01-24 10:38:23 +01:00
parent 1bd8ee4b79
commit 145c21a9ca
1 changed files with 0 additions and 27 deletions
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27
zipl/boot/tape2dump.c
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@@ -26,7 +26,6 @@
#define SENSE_OVERRUN 0x04 /* Sense */
#define WRITETAPEMARK 0x1f /* Write Tape Mark */
#define READ_DEV_CHAR 0x64 /* Read device characteristics */
#define LOAD_DISPLAY 0x9f /* Load tape display */
#define MODE_SET_DB 0xdb /* Mode set */
/*
@@ -129,17 +128,6 @@ static void setup_idrc_compression(void)
}
}
/*
* Print message on tape display
*/
static void ccw_load_display(const char *msg)
{
char _msg[24] = {0x20};
strcpy(&_msg[1], msg);
start_ccw(LOAD_DISPLAY, CCW_FLAG_SLI, 0x11, (void *) _msg);
}
/*
* Write sense data to buffer
*/
@@ -182,19 +170,6 @@ static void ccw_write_block(unsigned long addr, unsigned long size,
panic(EMEM, "Device too small");
}
/*
* Every 16 MB we update the tape display
*/
static void progress_print_disp(unsigned long addr)
{
char msg[24];
if (addr % (1024 * 1024 * 16) != 0)
return;
snprintf(msg, sizeof(msg), "%08u", addr >> 20);
ccw_load_display(msg);
}
/*
* Dump all memory to tape
*/
@@ -212,11 +187,9 @@ void dt_dump_mem(void)
ccw_write_block(addr, BLK_SIZE, page);
total_dump_size += BLK_SIZE;
progress_print(addr + BLK_SIZE);
progress_print_disp(addr + BLK_SIZE);
}
df_s390_em_page_init(page);
ccw_write_block(page, sizeof(struct df_s390_em), 0);
free_page(page);
ccw_write_tapemark();
ccw_load_display("DUMP*END");
}