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| |||||||||||||
osst upgrade to 0.99.3
In a series of three mails, I'll present changes I'd like to see
made to the osst driver in the linux-2.6.11 pre-series.
Patch 1 (below) will make style changes that are the equivalent
of recent changes to st, such as using 'struct osst_tape' where
we used to have 'OS_Scsi_Tape' as a typedef. Osst behavior is
not affected by this first patch.
Patch 2 (sent separately) contains important error handling
improvements that I've made as the result of problem reports.
Patch 3 (again separate) adds sysfs support to osst. This enables
hotplug and udev to manage the osst /dev nodes, which is a real
necessity on installations that use a dynamic /dev, such as
Fedora Core 3.
Thanks, Willem Riede, osst maintainer.
signed-off-by: Willem Riede <osst@riede.org>
--- linux-2.6.10/drivers/scsi/osst.h 2004-12-31 09:47:38.000000000 -0500
+++ osst-patches/osst.h 2005-01-01 19:05:27.000000000 -0500
@@ -1,5 +1,5 @@
/*
- * $Header: /cvsroot/osst/Driver/osst.h,v 1.14 2003/12/14 14:34:38 wriede Exp
$
+ * $Header: /cvsroot/osst/Driver/osst.h,v 1.16 2005/01/01 21:13:35 wriede Exp
$
*/
#include <asm/byteorder.h>
@@ -508,7 +508,7 @@
//#define OSST_MAX_SG 2
/* The OnStream tape buffer descriptor. */
-typedef struct {
+struct osst_buffer {
unsigned char in_use;
unsigned char dma; /* DMA-able buffer */
int buffer_size;
@@ -525,16 +525,16 @@
unsigned short sg_segs; /* number of segments in s/g list
*/
unsigned short orig_sg_segs; /* number of segments allocated at first try
*/
struct scatterlist sg[1]; /* MUST BE last item
*/
-} OSST_buffer;
+} ;
/* The OnStream tape drive descriptor */
-typedef struct {
+struct osst_tape {
struct scsi_driver *driver;
unsigned capacity;
Scsi_Device* device;
struct semaphore lock; /* for serialization */
struct completion wait; /* for SCSI commands */
- OSST_buffer * buffer;
+ struct osst_buffer * buffer;
/* Drive characteristics */
unsigned char omit_blklims;
@@ -623,7 +623,7 @@
unsigned char last_sense[16];
#endif
struct gendisk *drive;
-} OS_Scsi_Tape;
+} ;
/* Values of write_type */
#define OS_WRITE_DATA 0
--- linux-2.6.10/drivers/scsi/osst.c 2004-12-31 09:47:38.000000000 -0500
+++ osst-patches/osst.c 2005-01-01 19:11:25.000000000 -0500
@@ -46,6 +46,7 @@
#include <linux/spinlock.h>
#include <linux/vmalloc.h>
#include <linux/blkdev.h>
+#include <linux/moduleparam.h>
#include <linux/devfs_fs_kernel.h>
#include <linux/delay.h>
#include <asm/uaccess.h>
@@ -82,13 +83,13 @@
MODULE_DESCRIPTION("OnStream {DI-|FW-|SC-|USB}{30|50} Tape Driver");
MODULE_LICENSE("GPL");
-module_param(max_dev, int, 0);
+module_param(max_dev, int, 0444);
MODULE_PARM_DESC(max_dev, "Maximum number of OnStream Tape Drives to attach
(4)");
-module_param(write_threshold_kbs, int, 0);
+module_param(write_threshold_kbs, int, 0644);
MODULE_PARM_DESC(write_threshold_kbs, "Asynchronous write threshold (KB;
32)");
-module_param(max_sg_segs, int, 0);
+module_param(max_sg_segs, int, 0644);
MODULE_PARM_DESC(max_sg_segs, "Maximum number of scatter/gather segments to use
(9)");
#else
static struct osst_dev_parm {
@@ -147,19 +148,19 @@
static int osst_max_dev = OSST_MAX_TAPES;
static int osst_nr_dev;
-static OS_Scsi_Tape **os_scsi_tapes = NULL;
-static rwlock_t os_scsi_tapes_lock = RW_LOCK_UNLOCKED;
+static struct osst_tape **os_scsi_tapes = NULL;
+static rwlock_t os_scsi_tapes_lock = RW_LOCK_UNLOCKED;
static int modes_defined = FALSE;
-static OSST_buffer *new_tape_buffer(int, int, int);
-static int enlarge_buffer(OSST_buffer *, int);
-static void normalize_buffer(OSST_buffer *);
-static int append_to_buffer(const char __user *, OSST_buffer *, int);
-static int from_buffer(OSST_buffer *, char __user *, int);
-static int osst_zero_buffer_tail(OSST_buffer *);
-static int osst_copy_to_buffer(OSST_buffer *, unsigned char *);
-static int osst_copy_from_buffer(OSST_buffer *, unsigned char *);
+static struct osst_buffer *new_tape_buffer(int, int, int);
+static int enlarge_buffer(struct osst_buffer *, int);
+static void normalize_buffer(struct osst_buffer *);
+static int append_to_buffer(const char __user *, struct osst_buffer *, int);
+static int from_buffer(struct osst_buffer *, char __user *, int);
+static int osst_zero_buffer_tail(struct osst_buffer *);
+static int osst_copy_to_buffer(struct osst_buffer *, unsigned char *);
+static int osst_copy_from_buffer(struct osst_buffer *, unsigned char *);
static int osst_probe(struct device *);
static int osst_remove(struct device *);
@@ -173,17 +174,18 @@
}
};
-static int osst_int_ioctl(OS_Scsi_Tape *STp, Scsi_Request ** aSRpnt, unsigned int cmd_in,unsigned
long arg);
+static int osst_int_ioctl(struct osst_tape *STp, struct scsi_request **
aSRpnt,
+ unsigned int cmd_in, unsigned long arg);
-static int osst_set_frame_position(OS_Scsi_Tape *STp, Scsi_Request ** aSRpnt, int frame, int
skip);
+static int osst_set_frame_position(struct osst_tape *STp, struct scsi_request ** aSRpnt, int
frame, int skip);
-static int osst_get_frame_position(OS_Scsi_Tape *STp, Scsi_Request **
aSRpnt);
+static int osst_get_frame_position(struct osst_tape *STp, struct scsi_request **
aSRpnt);
-static int osst_flush_write_buffer(OS_Scsi_Tape *STp, Scsi_Request **
aSRpnt);
+static int osst_flush_write_buffer(struct osst_tape *STp, struct scsi_request **
aSRpnt);
-static int osst_write_error_recovery(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int
pending);
+static int osst_write_error_recovery(struct osst_tape * STp, struct scsi_request ** aSRpnt, int
pending);
-static inline char *tape_name(OS_Scsi_Tape *tape)
+static inline char *tape_name(struct osst_tape *tape)
{
return tape->drive->disk_name;
}
@@ -191,7 +193,7 @@
/* Routines that handle the interaction with mid-layer SCSI routines */
/* Convert the result to success code */
-static int osst_chk_result(OS_Scsi_Tape * STp, Scsi_Request * SRpnt)
+static int osst_chk_result(struct osst_tape * STp, struct scsi_request *
SRpnt)
{
char *name = tape_name(STp);
int result = SRpnt->sr_result;
@@ -281,7 +283,7 @@
/* Wakeup from interrupt */
static void osst_sleep_done (Scsi_Cmnd * SCpnt)
{
- OS_Scsi_Tape * STp = container_of(SCpnt->request->rq_disk->private_data, OS_Scsi_Tape,
driver);
+ struct osst_tape * STp = container_of(SCpnt->request->rq_disk->private_data, struct osst_tape,
driver);
if ((STp->buffer)->writing &&
(SCpnt->sense_buffer[0] & 0x70) == 0x70 &&
@@ -307,7 +309,7 @@
/* Do the scsi command. Waits until command performed if do_wait is true.
Otherwise osst_write_behind_check() is used to check that the command
has finished. */
-static Scsi_Request * osst_do_scsi(Scsi_Request *SRpnt, OS_Scsi_Tape *STp,
+static struct scsi_request * osst_do_scsi(struct scsi_request *SRpnt, struct osst_tape *STp,
unsigned char *cmd, int bytes, int direction, int timeout, int retries, int
do_wait)
{
unsigned char *bp;
@@ -366,9 +368,9 @@
/* Handle the write-behind checking (downs the semaphore) */
-static void osst_write_behind_check(OS_Scsi_Tape *STp)
+static void osst_write_behind_check(struct osst_tape *STp)
{
- OSST_buffer * STbuffer;
+ struct osst_buffer * STbuffer;
STbuffer = STp->buffer;
@@ -406,7 +408,7 @@
/*
* Initialize the OnStream AUX
*/
-static void osst_init_aux(OS_Scsi_Tape * STp, int frame_type, int
frame_seq_number,
+static void osst_init_aux(struct osst_tape * STp, int frame_type, int
frame_seq_number,
int logical_blk_num, int blk_sz, int blk_cnt)
{
os_aux_t *aux = STp->buffer->aux;
@@ -468,13 +470,13 @@
/*
* Verify that we have the correct tape frame
*/
-static int osst_verify_frame(OS_Scsi_Tape * STp, int frame_seq_number, int
quiet)
+static int osst_verify_frame(struct osst_tape * STp, int frame_seq_number, int
quiet)
{
- char * name = tape_name(STp);
- os_aux_t * aux = STp->buffer->aux;
- os_partition_t * par = &(aux->partition);
- struct st_partstat * STps = &(STp->ps[STp->partition]);
- int blk_cnt, blk_sz, i;
+ char * name = tape_name(STp);
+ os_aux_t * aux = STp->buffer->aux;
+ os_partition_t * par = &(aux->partition);
+ struct st_partstat * STps = &(STp->ps[STp->partition]);
+ int blk_cnt, blk_sz, i;
if (STp->raw) {
if (STp->buffer->syscall_result) {
@@ -602,14 +604,15 @@
/*
* Wait for the unit to become Ready
*/
-static int osst_wait_ready(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, unsigned timeout, int
initial_delay)
+static int osst_wait_ready(struct osst_tape * STp, struct scsi_request **
aSRpnt,
+ unsigned timeout, int initial_delay)
{
- unsigned char cmd[MAX_COMMAND_SIZE];
- Scsi_Request * SRpnt;
- unsigned long startwait = jiffies;
+ unsigned char cmd[MAX_COMMAND_SIZE];
+ struct scsi_request * SRpnt;
+ unsigned long startwait = jiffies;
#if DEBUG
- int dbg = debugging;
- char * name = tape_name(STp);
+ int dbg = debugging;
+ char * name = tape_name(STp);
printk(OSST_DEB_MSG "%s:D: Reached onstream wait ready\n", name);
#endif
@@ -666,14 +669,14 @@
/*
* Wait for a tape to be inserted in the unit
*/
-static int osst_wait_for_medium(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, unsigned
timeout)
+static int osst_wait_for_medium(struct osst_tape * STp, struct scsi_request ** aSRpnt, unsigned
timeout)
{
- unsigned char cmd[MAX_COMMAND_SIZE];
- Scsi_Request * SRpnt;
- unsigned long startwait = jiffies;
+ unsigned char cmd[MAX_COMMAND_SIZE];
+ struct scsi_request * SRpnt;
+ unsigned long startwait = jiffies;
#if DEBUG
- int dbg = debugging;
- char * name = tape_name(STp);
+ int dbg = debugging;
+ char * name = tape_name(STp);
printk(OSST_DEB_MSG "%s:D: Reached onstream wait for medium\n", name);
#endif
@@ -722,7 +725,7 @@
return 1;
}
-static int osst_position_tape_and_confirm(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int
frame)
+static int osst_position_tape_and_confirm(struct osst_tape * STp, struct scsi_request ** aSRpnt,
int frame)
{
int retval;
@@ -736,15 +739,14 @@
/*
* Wait for write(s) to complete
*/
-static int osst_flush_drive_buffer(OS_Scsi_Tape * STp, Scsi_Request **
aSRpnt)
+static int osst_flush_drive_buffer(struct osst_tape * STp, struct scsi_request **
aSRpnt)
{
- unsigned char cmd[MAX_COMMAND_SIZE];
- Scsi_Request * SRpnt;
-
- int result = 0;
- int delay = OSST_WAIT_WRITE_COMPLETE;
+ unsigned char cmd[MAX_COMMAND_SIZE];
+ struct scsi_request * SRpnt;
+ int result = 0;
+ int delay = OSST_WAIT_WRITE_COMPLETE;
#if DEBUG
- char * name = tape_name(STp);
+ char * name = tape_name(STp);
printk(OSST_DEB_MSG "%s:D: Reached onstream flush drive buffer (write filemark)\n",
name);
#endif
@@ -771,12 +773,12 @@
}
#define OSST_POLL_PER_SEC 10
-static int osst_wait_frame(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int curr, int minlast, int
to)
+static int osst_wait_frame(struct osst_tape * STp, struct scsi_request ** aSRpnt, int curr, int
minlast, int to)
{
- unsigned long startwait = jiffies;
- char * name = tape_name(STp);
+ unsigned long startwait = jiffies;
+ char * name = tape_name(STp);
#if DEBUG
- char notyetprinted = 1;
+ char notyetprinted = 1;
#endif
if (minlast >= 0 && STp->ps[STp->partition].rw != ST_READING)
printk(KERN_ERR "%s:A: Waiting for frame without having initialized read!\n",
name);
@@ -784,7 +786,7 @@
while (time_before (jiffies, startwait + to*HZ))
{
int result;
- result = osst_get_frame_position (STp, aSRpnt);
+ result = osst_get_frame_position(STp, aSRpnt);
if (result == -EIO)
if ((result = osst_write_error_recovery(STp, aSRpnt, 0)) == 0)
return 0; /* successful recovery leaves drive ready for frame */
@@ -829,14 +831,14 @@
/*
* Read the next OnStream tape frame at the current location
*/
-static int osst_read_frame(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int
timeout)
+static int osst_read_frame(struct osst_tape * STp, struct scsi_request ** aSRpnt, int
timeout)
{
- unsigned char cmd[MAX_COMMAND_SIZE];
- Scsi_Request * SRpnt;
- int retval = 0;
+ unsigned char cmd[MAX_COMMAND_SIZE];
+ struct scsi_request * SRpnt;
+ int retval = 0;
#if DEBUG
- os_aux_t * aux = STp->buffer->aux;
- char * name = tape_name(STp);
+ os_aux_t * aux = STp->buffer->aux;
+ char * name = tape_name(STp);
#endif
/* TODO: Error handling */
@@ -900,15 +902,13 @@
return (retval);
}
-static int osst_initiate_read(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt)
+static int osst_initiate_read(struct osst_tape * STp, struct scsi_request **
aSRpnt)
{
- struct st_partstat * STps = &(STp->ps[STp->partition]);
- Scsi_Request * SRpnt ;
- unsigned char cmd[MAX_COMMAND_SIZE];
- int retval = 0;
-#if DEBUG
- char * name = tape_name(STp);
-#endif
+ struct st_partstat * STps = &(STp->ps[STp->partition]);
+ struct scsi_request * SRpnt ;
+ unsigned char cmd[MAX_COMMAND_SIZE];
+ int retval = 0;
+ char * name = tape_name(STp);
if (STps->rw != ST_READING) { /* Initialize read operation */
if (STps->rw == ST_WRITING || STp->dirty) {
@@ -938,15 +938,16 @@
return retval;
}
-static int osst_get_logical_frame(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int
frame_seq_number, int quiet)
+static int osst_get_logical_frame(struct osst_tape * STp, struct scsi_request **
aSRpnt,
+ int frame_seq_number, int quiet)
{
struct st_partstat * STps = &(STp->ps[STp->partition]);
- char * name = tape_name(STp);
- int cnt = 0,
- bad = 0,
- past = 0,
- x,
- position;
+ char * name = tape_name(STp);
+ int cnt = 0,
+ bad = 0,
+ past = 0,
+ x,
+ position;
/*
* If we want just any frame (-1) and there is a frame in the buffer, return
it
@@ -1064,10 +1065,10 @@
return (STps->eof);
}
-static int osst_seek_logical_blk(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int
logical_blk_num)
+static int osst_seek_logical_blk(struct osst_tape * STp, struct scsi_request ** aSRpnt, int
logical_blk_num)
{
struct st_partstat * STps = &(STp->ps[STp->partition]);
- char * name = tape_name(STp);
+ char * name = tape_name(STp);
int retries = 0;
int frame_seq_estimate, ppos_estimate, move;
@@ -1173,7 +1174,7 @@
#define OSST_SECTOR_SHIFT 9
#define OSST_SECTOR_MASK 0x03F
-static int osst_get_sector(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt)
+static int osst_get_sector(struct osst_tape * STp, struct scsi_request **
aSRpnt)
{
int sector;
#if DEBUG
@@ -1203,12 +1204,12 @@
return sector;
}
-static int osst_seek_sector(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int
sector)
+static int osst_seek_sector(struct osst_tape * STp, struct scsi_request ** aSRpnt, int
sector)
{
- struct st_partstat * STps = &(STp->ps[STp->partition]);
- int frame = sector >> OSST_FRAME_SHIFT,
- offset = (sector & OSST_SECTOR_MASK) << OSST_SECTOR_SHIFT,
- r;
+ struct st_partstat * STps = &(STp->ps[STp->partition]);
+ int frame = sector >> OSST_FRAME_SHIFT,
+ offset = (sector & OSST_SECTOR_MASK) << OSST_SECTOR_SHIFT,
+ r;
#if DEBUG
char * name = tape_name(STp);
@@ -1266,23 +1267,23 @@
* Precondition for this function to work: all frames in the
* drive's buffer must be of one type (DATA, MARK or EOD)!
*/
-static int osst_read_back_buffer_and_rewrite(OS_Scsi_Tape * STp, Scsi_Request **
aSRpnt,
- unsigned int frame, unsigned int skip, int pending)
+static int osst_read_back_buffer_and_rewrite(struct osst_tape * STp, struct scsi_request **
aSRpnt,
+ unsigned int frame, unsigned int skip, int pending)
{
- Scsi_Request * SRpnt = * aSRpnt;
- unsigned char * buffer, * p;
- unsigned char cmd[MAX_COMMAND_SIZE];
- int flag, new_frame, i;
- int nframes = STp->cur_frames;
- int blks_per_frame = ntohs(STp->buffer->aux->dat.dat_list[0].blk_cnt);
- int frame_seq_number = ntohl(STp->buffer->aux->frame_seq_num)
+ struct scsi_request * SRpnt = * aSRpnt;
+ unsigned char * buffer, * p;
+ unsigned char cmd[MAX_COMMAND_SIZE];
+ int flag, new_frame, i;
+ int nframes = STp->cur_frames;
+ int blks_per_frame = ntohs(STp->buffer->aux->dat.dat_list[0].blk_cnt);
+ int frame_seq_number = ntohl(STp->buffer->aux->frame_seq_num)
- (nframes + pending - 1);
- int logical_blk_num = ntohl(STp->buffer->aux->logical_blk_num)
+ int logical_blk_num = ntohl(STp->buffer->aux->logical_blk_num)
- (nframes + pending - 1) * blks_per_frame;
- char * name = tape_name(STp);
- unsigned long startwait = jiffies;
+ char * name = tape_name(STp);
+ unsigned long startwait = jiffies;
#if DEBUG
- int dbg = debugging;
+ int dbg = debugging;
#endif
if ((buffer = (unsigned char *)vmalloc((nframes + 1) * OS_DATA_SIZE)) ==
NULL)
@@ -1459,18 +1460,18 @@
return 0;
}
-static int osst_reposition_and_retry(OS_Scsi_Tape * STp, Scsi_Request **
aSRpnt,
+static int osst_reposition_and_retry(struct osst_tape * STp, struct scsi_request **
aSRpnt,
unsigned int frame, unsigned int skip, int pending)
{
- unsigned char cmd[MAX_COMMAND_SIZE];
- Scsi_Request * SRpnt;
- char * name = tape_name(STp);
- int expected = 0;
- int attempts = 1000 / skip;
- int flag = 1;
- unsigned long startwait = jiffies;
+ unsigned char cmd[MAX_COMMAND_SIZE];
+ struct scsi_request * SRpnt;
+ char * name = tape_name(STp);
+ int expected = 0;
+ int attempts = 1000 / skip;
+ int flag = 1;
+ unsigned long startwait = jiffies;
#if DEBUG
- int dbg = debugging;
+ int dbg = debugging;
#endif
while (attempts && time_before(jiffies, startwait + 60*HZ)) {
@@ -1563,14 +1564,14 @@
* Error recovery algorithm for the OnStream tape.
*/
-static int osst_write_error_recovery(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int
pending)
+static int osst_write_error_recovery(struct osst_tape * STp, struct scsi_request ** aSRpnt, int
pending)
{
- Scsi_Request * SRpnt = * aSRpnt;
+ struct scsi_request * SRpnt = * aSRpnt;
struct st_partstat * STps = & STp->ps[STp->partition];
- char * name = tape_name(STp);
- int retval = 0;
- int rw_state;
- unsigned int frame, skip;
+ char * name = tape_name(STp);
+ int retval = 0;
+ int rw_state;
+ unsigned int frame, skip;
rw_state = STps->rw;
@@ -1640,7 +1641,7 @@
return retval;
}
-static int osst_space_over_filemarks_backward(OS_Scsi_Tape * STp, Scsi_Request **
aSRpnt,
+static int osst_space_over_filemarks_backward(struct osst_tape * STp, struct scsi_request **
aSRpnt,
int mt_op, int mt_count)
{
char * name = tape_name(STp);
@@ -1739,7 +1740,7 @@
*
* Just scans for the filemark sequentially.
*/
-static int osst_space_over_filemarks_forward_slow(OS_Scsi_Tape * STp, Scsi_Request **
aSRpnt,
+static int osst_space_over_filemarks_forward_slow(struct osst_tape * STp, struct scsi_request **
aSRpnt,
int mt_op, int mt_count)
{
int cnt = 0;
@@ -1793,7 +1794,7 @@
/*
* Fast linux specific version of OnStream FSF
*/
-static int osst_space_over_filemarks_forward_fast(OS_Scsi_Tape * STp, Scsi_Request **
aSRpnt,
+static int osst_space_over_filemarks_forward_fast(struct osst_tape * STp, struct scsi_request **
aSRpnt,
int mt_op, int mt_count)
{
char * name = tape_name(STp);
@@ -1944,11 +1945,11 @@
* to test the error recovery mechanism.
*/
#if DEBUG
-static void osst_set_retries(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int
retries)
+static void osst_set_retries(struct osst_tape * STp, struct scsi_request ** aSRpnt, int
retries)
{
- unsigned char cmd[MAX_COMMAND_SIZE];
- Scsi_Request * SRpnt = * aSRpnt;
- char * name = tape_name(STp);
+ unsigned char cmd[MAX_COMMAND_SIZE];
+ struct scsi_request * SRpnt = * aSRpnt;
+ char * name = tape_name(STp);
memset(cmd, 0, MAX_COMMAND_SIZE);
cmd[0] = MODE_SELECT;
@@ -1976,7 +1977,7 @@
#endif
-static int osst_write_filemark(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt)
+static int osst_write_filemark(struct osst_tape * STp, struct scsi_request **
aSRpnt)
{
int result;
int this_mark_ppos = STp->first_frame_position;
@@ -2004,7 +2005,7 @@
return result;
}
-static int osst_write_eod(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt)
+static int osst_write_eod(struct osst_tape * STp, struct scsi_request **
aSRpnt)
{
int result;
#if DEBUG
@@ -2027,7 +2028,7 @@
return result;
}
-static int osst_write_filler(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int where, int
count)
+static int osst_write_filler(struct osst_tape * STp, struct scsi_request ** aSRpnt, int where, int
count)
{
char * name = tape_name(STp);
@@ -2052,7 +2053,7 @@
return osst_flush_drive_buffer(STp, aSRpnt);
}
-static int __osst_write_header(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int where, int
count)
+static int __osst_write_header(struct osst_tape * STp, struct scsi_request ** aSRpnt, int where,
int count)
{
char * name = tape_name(STp);
int result;
@@ -2079,7 +2080,7 @@
return result;
}
-static int osst_write_header(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int
locate_eod)
+static int osst_write_header(struct osst_tape * STp, struct scsi_request ** aSRpnt, int
locate_eod)
{
os_header_t * header;
int result;
@@ -2153,7 +2154,7 @@
return result;
}
-static int osst_reset_header(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt)
+static int osst_reset_header(struct osst_tape * STp, struct scsi_request **
aSRpnt)
{
if (STp->header_cache != NULL)
memset(STp->header_cache, 0, sizeof(os_header_t));
@@ -2166,7 +2167,7 @@
return osst_write_header(STp, aSRpnt, 1);
}
-static int __osst_analyze_headers(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int
ppos)
+static int __osst_analyze_headers(struct osst_tape * STp, struct scsi_request ** aSRpnt, int
ppos)
{
char * name = tape_name(STp);
os_header_t * header;
@@ -2343,7 +2344,7 @@
return 1;
}
-static int osst_analyze_headers(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt)
+static int osst_analyze_headers(struct osst_tape * STp, struct scsi_request **
aSRpnt)
{
int position, ppos;
int first, last;
@@ -2398,7 +2399,7 @@
return 1;
}
-static int osst_verify_position(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt)
+static int osst_verify_position(struct osst_tape * STp, struct scsi_request **
aSRpnt)
{
int frame_position = STp->first_frame_position;
int frame_seq_numbr = STp->frame_seq_number;
@@ -2474,11 +2475,11 @@
/*
* Configure the OnStream SCII tape drive for default operation
*/
-static int osst_configure_onstream(OS_Scsi_Tape *STp, Scsi_Request ** aSRpnt)
+static int osst_configure_onstream(struct osst_tape *STp, struct scsi_request **
aSRpnt)
{
unsigned char cmd[MAX_COMMAND_SIZE];
char * name = tape_name(STp);
- Scsi_Request * SRpnt = * aSRpnt;
+ struct scsi_request * SRpnt = * aSRpnt;
osst_mode_parameter_header_t * header;
osst_block_size_page_t * bs;
osst_capabilities_page_t * cp;
@@ -2645,7 +2646,7 @@
/* Step over EOF if it has been inadvertently crossed (ioctl not used because
it messes up the block number). */
-static int cross_eof(OS_Scsi_Tape *STp, Scsi_Request ** aSRpnt, int forward)
+static int cross_eof(struct osst_tape *STp, struct scsi_request ** aSRpnt, int
forward)
{
int result;
char * name = tape_name(STp);
@@ -2674,18 +2675,18 @@
/* Get the tape position. */
-static int osst_get_frame_position(OS_Scsi_Tape *STp, Scsi_Request ** aSRpnt)
+static int osst_get_frame_position(struct osst_tape *STp, struct scsi_request **
aSRpnt)
{
- unsigned char scmd[MAX_COMMAND_SIZE];
- Scsi_Request * SRpnt;
- int result = 0;
+ unsigned char scmd[MAX_COMMAND_SIZE];
+ struct scsi_request * SRpnt;
+ int result = 0;
+ char * name = tape_name(STp);
/* KG: We want to be able to use it for checking Write Buffer availability
* and thus don't want to risk to overwrite anything. Exchange buffers ...
*/
char mybuf[24];
char * olddata = STp->buffer->b_data;
int oldsize = STp->buffer->buffer_size;
- char * name = tape_name(STp);
if (STp->ready != ST_READY) return (-EIO);
@@ -2752,14 +2753,14 @@
/* Set the tape block */
-static int osst_set_frame_position(OS_Scsi_Tape *STp, Scsi_Request ** aSRpnt, int ppos, int
skip)
+static int osst_set_frame_position(struct osst_tape *STp, struct scsi_request ** aSRpnt, int ppos,
int skip)
{
- unsigned char scmd[MAX_COMMAND_SIZE];
- Scsi_Request * SRpnt;
- struct st_partstat * STps;
- int result = 0;
- int pp = (ppos == 3000 && !skip)? 0 : ppos;
- char * name = tape_name(STp);
+ unsigned char scmd[MAX_COMMAND_SIZE];
+ struct scsi_request * SRpnt;
+ struct st_partstat * STps;
+ int result = 0;
+ int pp = (ppos == 3000 && !skip)? 0 : ppos;
+ char * name = tape_name(STp);
if (STp->ready != ST_READY) return (-EIO);
@@ -2810,7 +2811,7 @@
return result;
}
-static int osst_write_trailer(OS_Scsi_Tape *STp, Scsi_Request ** aSRpnt, int
leave_at_EOT)
+static int osst_write_trailer(struct osst_tape *STp, struct scsi_request ** aSRpnt, int
leave_at_EOT)
{
struct st_partstat * STps = &(STp->ps[STp->partition]);
int result = 0;
@@ -2837,26 +2838,26 @@
/* osst versions of st functions - augmented and stripped to suit OnStream only
*/
/* Flush the write buffer (never need to write if variable blocksize). */
-static int osst_flush_write_buffer(OS_Scsi_Tape *STp, Scsi_Request ** aSRpnt)
+static int osst_flush_write_buffer(struct osst_tape *STp, struct scsi_request **
aSRpnt)
{
- int offset, transfer, blks = 0;
- int result = 0;
- unsigned char cmd[MAX_COMMAND_SIZE];
- Scsi_Request * SRpnt = *aSRpnt;
- struct st_partstat * STps;
- char * name = tape_name(STp);
+ int offset, transfer, blks = 0;
+ int result = 0;
+ unsigned char cmd[MAX_COMMAND_SIZE];
+ struct scsi_request * SRpnt = *aSRpnt;
+ struct st_partstat * STps;
+ char * name = tape_name(STp);
if ((STp->buffer)->writing) {
if (SRpnt == (STp->buffer)->last_SRpnt)
#if DEBUG
{ printk(OSST_DEB_MSG
- "%s:D: aSRpnt points to Scsi_Request that write_behind_check will release -- cleared\n",
name);
+ "%s:D: aSRpnt points to scsi_request that write_behind_check will release -- cleared\n",
name);
#endif
*aSRpnt = SRpnt = NULL;
#if DEBUG
} else if (SRpnt)
printk(OSST_DEB_MSG
- "%s:D: aSRpnt does not point to Scsi_Request that write_behind_check will release -- strange\n",
name);
+ "%s:D: aSRpnt does not point to scsi_request that write_behind_check will release -- strange\n",
name);
#endif
osst_write_behind_check(STp);
if ((STp->buffer)->syscall_result) {
@@ -2967,12 +2968,12 @@
/* Flush the tape buffer. The tape will be positioned correctly unless
seek_next is true. */
-static int osst_flush_buffer(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int
seek_next)
+static int osst_flush_buffer(struct osst_tape * STp, struct scsi_request ** aSRpnt, int
seek_next)
{
struct st_partstat * STps;
- int backspace = 0, result = 0;
+ int backspace = 0, result = 0;
#if DEBUG
- char * name = tape_name(STp);
+ char * name = tape_name(STp);
#endif
/*
@@ -3029,13 +3030,13 @@
return result;
}
-static int osst_write_frame(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, int
synchronous)
+static int osst_write_frame(struct osst_tape * STp, struct scsi_request ** aSRpnt, int
synchronous)
{
- unsigned char cmd[MAX_COMMAND_SIZE];
- Scsi_Request * SRpnt;
- int blks;
+ unsigned char cmd[MAX_COMMAND_SIZE];
+ struct scsi_request * SRpnt;
+ int blks;
#if DEBUG
- char * name = tape_name(STp);
+ char * name = tape_name(STp);
#endif
if ((!STp-> raw) && (STp->first_frame_position == 0xbae)) { /* _must_ preserve buffer!
*/
@@ -3111,8 +3112,8 @@
return 0;
}
-/* Lock or unlock the drive door. Don't use when Scsi_Request allocated. */
-static int do_door_lock(OS_Scsi_Tape * STp, int do_lock)
+/* Lock or unlock the drive door. Don't use when struct scsi_request allocated.
*/
+static int do_door_lock(struct osst_tape * STp, int do_lock)
{
int retval, cmd;
@@ -3131,7 +3132,7 @@
}
/* Set the internal state after reset */
-static void reset_state(OS_Scsi_Tape *STp)
+static void reset_state(struct osst_tape *STp)
{
int i;
struct st_partstat *STps;
@@ -3154,16 +3155,16 @@
/* Write command */
static ssize_t osst_write(struct file * filp, const char __user * buf, size_t count, loff_t
*ppos)
{
- ssize_t total, retval = 0;
- ssize_t i, do_count, blks, transfer;
- int write_threshold;
- int doing_write = 0;
+ ssize_t total, retval = 0;
+ ssize_t i, do_count, blks, transfer;
+ int write_threshold;
+ int doing_write = 0;
const char __user * b_point;
- Scsi_Request * SRpnt = NULL;
+ struct scsi_request * SRpnt = NULL;
struct st_modedef * STm;
struct st_partstat * STps;
- OS_Scsi_Tape * STp = filp->private_data;
- char * name = tape_name(STp);
+ struct osst_tape * STp = filp->private_data;
+ char * name = tape_name(STp);
if (down_interruptible(&STp->lock))
@@ -3477,14 +3478,14 @@
/* Read command */
static ssize_t osst_read(struct file * filp, char __user * buf, size_t count, loff_t
*ppos)
{
- ssize_t total, retval = 0;
- ssize_t i, transfer;
- int special;
- struct st_modedef * STm;
+ ssize_t total, retval = 0;
+ ssize_t i, transfer;
+ int special;
+ struct st_modedef * STm;
struct st_partstat * STps;
- Scsi_Request * SRpnt = NULL;
- OS_Scsi_Tape * STp = filp->private_data;
- char * name = tape_name(STp);
+ struct scsi_request * SRpnt = NULL;
+ struct osst_tape * STp = filp->private_data;
+ char * name = tape_name(STp);
if (down_interruptible(&STp->lock))
@@ -3660,8 +3661,7 @@
/* Set the driver options */
-static void osst_log_options(OS_Scsi_Tape *STp, struct st_modedef *STm,
- char *name)
+static void osst_log_options(struct osst_tape *STp, struct st_modedef *STm, char
*name)
{
printk(KERN_INFO
"%s:I: Mode %d options: buffer writes: %d, async writes: %d, read ahead:
%d\n",
@@ -3684,12 +3684,12 @@
}
-static int osst_set_options(OS_Scsi_Tape *STp, long options)
+static int osst_set_options(struct osst_tape *STp, long options)
{
- int value;
- long code;
+ int value;
+ long code;
struct st_modedef * STm;
- char * name = tape_name(STp);
+ char * name = tape_name(STp);
STm = &(STp->modes[STp->current_mode]);
if (!STm->defined) {
@@ -3840,18 +3840,19 @@
/* Internal ioctl function */
-static int osst_int_ioctl(OS_Scsi_Tape * STp, Scsi_Request ** aSRpnt, unsigned int cmd_in,
unsigned long arg)
+static int osst_int_ioctl(struct osst_tape * STp, struct scsi_request **
aSRpnt,
+ unsigned int cmd_in, unsigned long arg)
{
- int timeout;
- long ltmp;
- int i, ioctl_result;
- int chg_eof = TRUE;
- unsigned char cmd[MAX_COMMAND_SIZE];
- Scsi_Request * SRpnt = * aSRpnt;
- struct st_partstat * STps;
- int fileno, blkno, at_sm, frame_seq_numbr, logical_blk_num;
- int datalen = 0, direction = SCSI_DATA_NONE;
- char * name = tape_name(STp);
+ int timeout;
+ long ltmp;
+ int i, ioctl_result;
+ int chg_eof = TRUE;
+ unsigned char cmd[MAX_COMMAND_SIZE];
+ struct scsi_request * SRpnt = * aSRpnt;
+ struct st_partstat * STps;
+ int fileno, blkno, at_sm, frame_seq_numbr, logical_blk_num;
+ int datalen = 0, direction = SCSI_DATA_NONE;
+ char * name = tape_name(STp);
if (STp->ready != ST_READY && cmd_in != MTLOAD) {
if (STp->ready == ST_NO_TAPE)
@@ -4227,16 +4228,16 @@
/* Open the device */
static int os_scsi_tape_open(struct inode * inode, struct file * filp)
{
- unsigned short flags;
- int i, b_size, new_session = FALSE, retval = 0;
- unsigned char cmd[MAX_COMMAND_SIZE];
- Scsi_Request * SRpnt = NULL;
- OS_Scsi_Tape * STp;
- struct st_modedef * STm;
+ unsigned short flags;
+ int i, b_size, new_session = FALSE, retval = 0;
+ unsigned char cmd[MAX_COMMAND_SIZE];
+ struct scsi_request * SRpnt = NULL;
+ struct osst_tape * STp;
+ struct st_modedef * STm;
struct st_partstat * STps;
- char * name;
- int dev = TAPE_NR(inode);
- int mode = TAPE_MODE(inode);
+ char * name;
+ int dev = TAPE_NR(inode);
+ int mode = TAPE_MODE(inode);
nonseekable_open(inode, filp);
write_lock(&os_scsi_tapes_lock);
@@ -4588,12 +4589,12 @@
/* Flush the tape buffer before close */
static int os_scsi_tape_flush(struct file * filp)
{
- int result = 0, result2;
- OS_Scsi_Tape * STp = filp->private_data;
- struct st_modedef * STm = &(STp->modes[STp->current_mode]);
- struct st_partstat * STps = &(STp->ps[STp->partition]);
- Scsi_Request * SRpnt = NULL;
- char * name = tape_name(STp);
+ int result = 0, result2;
+ struct osst_tape * STp = filp->private_data;
+ struct st_modedef * STm = &(STp->modes[STp->current_mode]);
+ struct st_partstat * STps = &(STp->ps[STp->partition]);
+ struct scsi_request * SRpnt = NULL;
+ char * name = tape_name(STp);
if (file_count(filp) > 1)
return 0;
@@ -4676,9 +4677,9 @@
/* Close the device and release it */
static int os_scsi_tape_close(struct inode * inode, struct file * filp)
{
- int result = 0;
- OS_Scsi_Tape * STp = filp->private_data;
- Scsi_Request * SRpnt = NULL;
+ int result = 0;
+ struct osst_tape * STp = filp->private_data;
+ struct scsi_request * SRpnt = NULL;
if (SRpnt) scsi_release_request(SRpnt);
@@ -4703,14 +4704,14 @@
static int osst_ioctl(struct inode * inode,struct file * file,
unsigned int cmd_in, unsigned long arg)
{
- int i, cmd_nr, cmd_type, retval = 0;
- unsigned int blk;
- struct st_modedef * STm;
+ int i, cmd_nr, cmd_type, retval = 0;
+ unsigned int blk;
+ struct st_modedef * STm;
struct st_partstat * STps;
- Scsi_Request * SRpnt = NULL;
- OS_Scsi_Tape * STp = file->private_data;
- char * name = tape_name(STp);
- void __user *p = (void __user *)arg;
+ struct scsi_request * SRpnt = NULL;
+ struct osst_tape * STp = file->private_data;
+ char * name = tape_name(STp);
+ void __user * p = (void __user *)arg;
if (down_interruptible(&STp->lock))
return -ERESTARTSYS;
@@ -5039,18 +5040,18 @@
/* Memory handling routines */
/* Try to allocate a new tape buffer skeleton. Caller must not hold os_scsi_tapes_lock
*/
-static OSST_buffer * new_tape_buffer( int from_initialization, int need_dma, int max_sg
)
+static struct osst_buffer * new_tape_buffer( int from_initialization, int need_dma, int max_sg
)
{
int i, priority;
- OSST_buffer *tb;
+ struct osst_buffer *tb;
if (from_initialization)
priority = GFP_ATOMIC;
else
priority = GFP_KERNEL;
- i = sizeof(OSST_buffer) + (osst_max_sg_segs - 1) * sizeof(struct
scatterlist);
- tb = (OSST_buffer *)kmalloc(i, priority);
+ i = sizeof(struct osst_buffer) + (osst_max_sg_segs - 1) * sizeof(struct
scatterlist);
+ tb = (struct osst_buffer *)kmalloc(i, priority);
if (!tb) {
printk(KERN_NOTICE "osst :I: Can't allocate new tape buffer.\n");
return NULL;
@@ -5071,7 +5072,7 @@
}
/* Try to allocate a temporary (while a user has the device open) enlarged tape buffer
*/
-static int enlarge_buffer(OSST_buffer *STbuffer, int need_dma)
+static int enlarge_buffer(struct osst_buffer *STbuffer, int need_dma)
{
int segs, nbr, max_segs, b_size, priority, order, got;
@@ -5150,7 +5151,7 @@
/* Release the segments */
-static void normalize_buffer(OSST_buffer *STbuffer)
+static void normalize_buffer(struct osst_buffer *STbuffer)
{
int i, order, b_size;
@@ -5174,7 +5175,7 @@
/* Move data from the user buffer to the tape buffer. Returns zero (success)
or
negative error code. */
-static int append_to_buffer(const char __user *ubp, OSST_buffer *st_bp, int
do_count)
+static int append_to_buffer(const char __user *ubp, struct osst_buffer *st_bp, int
do_count)
{
int i, cnt, res, offset;
@@ -5207,7 +5208,7 @@
/* Move data from the tape buffer to the user buffer. Returns zero (success)
or
negative error code. */
-static int from_buffer(OSST_buffer *st_bp, char __user *ubp, int do_count)
+static int from_buffer(struct osst_buffer *st_bp, char __user *ubp, int
do_count)
{
int i, cnt, res, offset;
@@ -5239,7 +5240,7 @@
/* Sets the tail of the buffer after fill point to zero.
Returns zero (success) or negative error code. */
-static int osst_zero_buffer_tail(OSST_buffer *st_bp)
+static int osst_zero_buffer_tail(struct osst_buffer *st_bp)
{
int i, offset, do_count, cnt;
@@ -5267,7 +5268,7 @@
/* Copy a osst 32K chunk of memory into the buffer.
Returns zero (success) or negative error code. */
-static int osst_copy_to_buffer(OSST_buffer *st_bp, unsigned char *ptr)
+static int osst_copy_to_buffer(struct osst_buffer *st_bp, unsigned char *ptr)
{
int i, cnt, do_count = OS_DATA_SIZE;
@@ -5288,7 +5289,7 @@
/* Copy a osst 32K chunk of memory from the buffer.
Returns zero (success) or negative error code. */
-static int osst_copy_from_buffer(OSST_buffer *st_bp, unsigned char *ptr)
+static int osst_copy_from_buffer(struct osst_buffer *st_bp, unsigned char
*ptr)
{
int i, cnt, do_count = OS_DATA_SIZE;
@@ -5411,13 +5412,13 @@
static int osst_probe(struct device *dev)
{
- Scsi_Device * SDp = to_scsi_device(dev);
- OS_Scsi_Tape * tpnt;
- struct st_modedef * STm;
- struct st_partstat * STps;
- OSST_buffer * buffer;
- struct gendisk * drive;
- int i, mode, dev_num;
+ Scsi_Device * SDp = to_scsi_device(dev);
+ struct osst_tape * tpnt;
+ struct st_modedef * STm;
+ struct st_partstat * STps;
+ struct osst_buffer * buffer;
+ struct gendisk * drive;
+ int i, mode, dev_num;
if (SDp->type != TYPE_TAPE || !osst_supports(SDp))
return -ENODEV;
@@ -5432,7 +5433,7 @@
write_lock(&os_scsi_tapes_lock);
if (os_scsi_tapes == NULL) {
os_scsi_tapes =
- (OS_Scsi_Tape **)kmalloc(osst_max_dev * sizeof(OS_Scsi_Tape *),
+ (struct osst_tape **)kmalloc(osst_max_dev * sizeof(struct osst_tape *),
GFP_ATOMIC);
if (os_scsi_tapes == NULL) {
write_unlock(&os_scsi_tapes_lock);
@@ -5453,14 +5454,14 @@
if(i >= osst_max_dev) panic ("Scsi_devices corrupt (osst)");
dev_num = i;
- /* allocate a OS_Scsi_Tape for this device */
- tpnt = (OS_Scsi_Tape *)kmalloc(sizeof(OS_Scsi_Tape), GFP_ATOMIC);
+ /* allocate a struct osst_tape for this device */
+ tpnt = (struct osst_tape *)kmalloc(sizeof(struct osst_tape), GFP_ATOMIC);
if (tpnt == NULL) {
write_unlock(&os_scsi_tapes_lock);
printk(KERN_ERR "osst :E: Can't allocate device descriptor, device not
attached.\n");
goto out_put_disk;
}
- memset(tpnt, 0, sizeof(OS_Scsi_Tape));
+ memset(tpnt, 0, sizeof(struct osst_tape));
/* allocate a buffer for this device */
i = SDp->host->sg_tablesize;
@@ -5572,8 +5573,8 @@
static int osst_remove(struct device *dev)
{
- Scsi_Device * SDp = to_scsi_device(dev);
- OS_Scsi_Tape * tpnt;
+ Scsi_Device * SDp = to_scsi_device(dev);
+ struct osst_tape * tpnt;
int i, mode;
if ((SDp->type != TYPE_TAPE) || (osst_nr_dev <= 0))
@@ -5622,7 +5623,7 @@
static void __exit exit_osst (void)
{
int i;
- OS_Scsi_Tape * STp;
+ struct osst_tape * STp;
scsi_unregister_driver(&osst_template.gendrv);
unregister_chrdev(OSST_MAJOR, "osst");
-
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