fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / drivers / s390 / char / tape.h

diff --git a/drivers/s390/char/tape.h b/drivers/s390/char/tape.h
index 272bd1c..c9f1c4c 100644 (file)
--- a/drivers/s390/char/tape.h
+++ b/drivers/s390/char/tape.h
@@ -3,10 +3,11 @@
  *    tape device driver for 3480/3490E/3590 tapes.
  *
  *  S390 and zSeries version
- *    Copyright (C) 2001,2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ *    Copyright (C) 2001,2005 IBM Deutschland Entwicklung GmbH, IBM Corporation
  *    Author(s): Carsten Otte <cotte@de.ibm.com>
  *              Tuan Ngo-Anh <ngoanh@de.ibm.com>
  *              Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *              Stefan Bader <shbader@de.ibm.com>
  */
 
 #ifndef _TAPE_H
@@ -15,7 +16,6 @@
 #include <asm/ccwdev.h>
 #include <asm/debug.h>
 #include <asm/idals.h>
-#include <linux/config.h>
 #include <linux/blkdev.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -32,7 +32,7 @@ struct gendisk;
 #ifdef  DBF_LIKE_HELL
 #define DBF_LH(level, str, ...) \
 do { \
-       debug_sprintf_event(tape_dbf_area, level, str, ## __VA_ARGS__); \
+       debug_sprintf_event(TAPE_DBF_AREA, level, str, ## __VA_ARGS__); \
 } while (0)
 #else
 #define DBF_LH(level, str, ...) do {} while(0)
@@ -43,12 +43,12 @@ do { \
  */
 #define DBF_EVENT(d_level, d_str...) \
 do { \
-       debug_sprintf_event(tape_dbf_area, d_level, d_str); \
+       debug_sprintf_event(TAPE_DBF_AREA, d_level, d_str); \
 } while (0)
 
 #define DBF_EXCEPTION(d_level, d_str...) \
 do { \
-       debug_sprintf_exception(tape_dbf_area, d_level, d_str); \
+       debug_sprintf_exception(TAPE_DBF_AREA, d_level, d_str); \
 } while (0)
 
 #define TAPE_VERSION_MAJOR 2
@@ -111,6 +111,7 @@ enum tape_request_status {
        TAPE_REQUEST_QUEUED,    /* request is queued to be processed */
        TAPE_REQUEST_IN_IO,     /* request is currently in IO */
        TAPE_REQUEST_DONE,      /* request is completed. */
+       TAPE_REQUEST_CANCEL,    /* request should be canceled. */
 };
 
 /* Tape CCW request */
@@ -178,6 +179,7 @@ struct tape_char_data {
 /* Block Frontend Data */
 struct tape_blk_data
 {
+       struct tape_device *    device;
        /* Block device request queue. */
        request_queue_t *       request_queue;
        spinlock_t              request_queue_lock;
@@ -237,6 +239,9 @@ struct tape_device {
        /* Block dev frontend data */
        struct tape_blk_data            blk_data;
 #endif
+
+       /* Function to start or stop the next request later. */
+       struct delayed_work             tape_dnr;
 };
 
 /* Externals from tape_core.c */
@@ -245,6 +250,7 @@ extern void tape_free_request(struct tape_request *);
 extern int tape_do_io(struct tape_device *, struct tape_request *);
 extern int tape_do_io_async(struct tape_device *, struct tape_request *);
 extern int tape_do_io_interruptible(struct tape_device *, struct tape_request *);
+extern int tape_cancel_io(struct tape_device *, struct tape_request *);
 void tape_hotplug_event(struct tape_device *, int major, int action);
 
 static inline int
@@ -313,7 +319,7 @@ extern void tape_dump_sense_dbf(struct tape_device *, struct tape_request *,
 extern void tape_med_state_set(struct tape_device *, enum tape_medium_state);
 
 /* The debug area */
-extern debug_info_t *tape_dbf_area;
+extern debug_info_t *TAPE_DBF_AREA;
 
 /* functions for building ccws */
 static inline struct ccw1 *