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SubjectPatch for ide-tape
Hi, Marcelo -

here's what I've got in our tree.

-- Pete

-------- linux-2.4.19-ide-tape.diff ------------
36628 I/O error reading HP Colorado 5GB tape drive
62267 Segfault when insmod'in the ide-tape driver
nobug change printouts in idetape_reinit
I6809 Milan B5: divide error: 0000

36628:
Removes extra buffer flush from read_position(), which confuses
all versions of the HP Colorado.
Also touches up on insane logging.

62267:
ide-tape: Model: Seagate STT3401A
ide-tape: Firmware Revision: 308A
....
ide-tape: Maximum supported speed in KBps - 4000
ide-tape: Continuous transfer limits in blocks - 0 <===== HUH?!
ide-tape: Current speed in KBps - 755

I6809:
ide-tape: Model: Seagate STT3401A
ide-tape: Firmware Revision: 309C
....
ide-tape: Adjusted block size - 0 <===== Seagate strikes back
divide error: 0000

--- linux-2.4.19/drivers/ide/ide-tape.c Fri Aug 2 17:39:44 2002
+++ linux-2.4.19-p3/drivers/ide/ide-tape.c Thu Sep 5 13:14:01 2002
@@ -429,8 +429,6 @@
#include <asm/bitops.h>


-#define NO_LONGER_REQUIRED (1)
-
/*
* OnStream support
*/
@@ -2101,10 +2099,6 @@
if (status.b.check && pc->c[0] == IDETAPE_REQUEST_SENSE_CMD)
status.b.check = 0;
if (status.b.check || test_bit (PC_DMA_ERROR, &pc->flags)) { /* Error detected */
-#if IDETAPE_DEBUG_LOG
- if (tape->debug_level >= 1)
- printk (KERN_INFO "ide-tape: %s: I/O error, ",tape->name);
-#endif /* IDETAPE_DEBUG_LOG */
if (pc->c[0] == IDETAPE_REQUEST_SENSE_CMD) {
printk (KERN_ERR "ide-tape: I/O error in request sense command\n");
return ide_do_reset (drive);
@@ -2178,7 +2172,7 @@
pc->current_position+=bcount.all;
#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 2)
- printk(KERN_INFO "ide-tape: [cmd %x] transferred %d bytes on that interrupt\n", pc->c[0], bcount.all);
+ printk(KERN_INFO "ide-tape: [cmd %x] done %d\n", pc->c[0], bcount.all);
#endif
ide_set_handler (drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL); /* And set the interrupt handler again */
return ide_started;
@@ -2297,7 +2291,7 @@
}
#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 2)
- printk (KERN_INFO "ide-tape: Retry number - %d\n", pc->retries);
+ printk (KERN_INFO "ide-tape: Retry number - %d, [cmd %x]\n", pc->retries, pc->c[0]);
#endif /* IDETAPE_DEBUG_LOG */

pc->retries++;
@@ -2472,7 +2466,8 @@
status.all = GET_STAT();
if (status.b.dsc) {
if (status.b.check) { /* Error detected */
- printk (KERN_ERR "ide-tape: %s: I/O error, ",tape->name);
+ printk (KERN_ERR "ide-tape: %s: I/O error: pc = %2x, key = %2x, asc = %2x, ascq = %2x\n",
+ tape->name, pc->c[0], tape->sense_key, tape->asc, tape->ascq);
return idetape_retry_pc (drive); /* Retry operation */
}
pc->error = 0;
@@ -3275,28 +3270,13 @@

#if IDETAPE_DEBUG_LOG
if (tape->debug_level >= 4)
- printk (KERN_INFO "ide-tape: Reached idetape_read_position\n");
+ printk (KERN_INFO "ide-tape: Reached idetape_read_position\n");
#endif /* IDETAPE_DEBUG_LOG */

-#ifdef NO_LONGER_REQUIRED
- idetape_flush_tape_buffers(drive);
-#endif
idetape_create_read_position_cmd(&pc);
if (idetape_queue_pc_tail (drive, &pc))
return -1;
position = tape->first_frame_position;
-#ifdef NO_LONGER_REQUIRED
- if (tape->onstream) {
- if ((position != tape->last_frame_position - tape->blocks_in_buffer) &&
- (position != tape->last_frame_position + tape->blocks_in_buffer)) {
- if (tape->blocks_in_buffer == 0) {
- printk("ide-tape: %s: correcting read position %d, %d, %d\n", tape->name, position, tape->last_frame_position, tape->blocks_in_buffer);
- position = tape->last_frame_position;
- tape->first_frame_position = position;
- }
- }
- }
-#endif
return position;
}

@@ -5861,6 +5841,10 @@
printk(KERN_INFO "ide-tape: %s: overriding capabilities->max_speed (assuming 650KB/sec)\n", drive->name);
capabilities->max_speed = 650;
}
+ if (!capabilities->ctl) {
+ printk(KERN_INFO "ide-tape: %s: overriding capabilities->ctl (assuming 26KB)\n", drive->name);
+ capabilities->ctl = 52;
+ }

tape->capabilities = *capabilities; /* Save us a copy */
if (capabilities->blk512)
@@ -6200,7 +6184,7 @@
ide_register_module (&idetape_module);
MOD_DEC_USE_COUNT;
#if ONSTREAM_DEBUG
- printk(KERN_INFO "ide-tape: MOD_DEC_USE_COUNT in idetape_init\n");
+ printk(KERN_INFO "ide-tape: MOD_DEC_USE_COUNT in idetape_reinit\n");
#endif
return 0;
}
@@ -6209,7 +6193,7 @@
printk (KERN_ERR "ide-tape: Failed to register character device interface\n");
MOD_DEC_USE_COUNT;
#if ONSTREAM_DEBUG
- printk(KERN_INFO "ide-tape: MOD_DEC_USE_COUNT in idetape_init\n");
+ printk(KERN_INFO "ide-tape: MOD_DEC_USE_COUNT in idetape_reinit\n");
#endif
return -EBUSY;
}
@@ -6259,7 +6243,7 @@
ide_register_module (&idetape_module);
MOD_DEC_USE_COUNT;
#if ONSTREAM_DEBUG
- printk(KERN_INFO "ide-tape: MOD_DEC_USE_COUNT in idetape_init\n");
+ printk(KERN_INFO "ide-tape: MOD_DEC_USE_COUNT in idetape_reinit\n");
#endif

return 0;
-
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