165125e1e4
Some of the code has been gradually transitioned to using the proper struct request_queue, but there's lots left. So do a full sweet of the kernel and get rid of this typedef and replace its uses with the proper type. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
605 lines
20 KiB
C
605 lines
20 KiB
C
/*
|
|
* File...........: linux/drivers/s390/block/dasd_int.h
|
|
* Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
|
|
* Horst Hummel <Horst.Hummel@de.ibm.com>
|
|
* Martin Schwidefsky <schwidefsky@de.ibm.com>
|
|
* Bugreports.to..: <Linux390@de.ibm.com>
|
|
* (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
|
|
*
|
|
*/
|
|
|
|
#ifndef DASD_INT_H
|
|
#define DASD_INT_H
|
|
|
|
#ifdef __KERNEL__
|
|
|
|
/* we keep old device allocation scheme; IOW, minors are still in 0..255 */
|
|
#define DASD_PER_MAJOR (1U << (MINORBITS - DASD_PARTN_BITS))
|
|
#define DASD_PARTN_MASK ((1 << DASD_PARTN_BITS) - 1)
|
|
|
|
/*
|
|
* States a dasd device can have:
|
|
* new: the dasd_device structure is allocated.
|
|
* known: the discipline for the device is identified.
|
|
* basic: the device can do basic i/o.
|
|
* unfmt: the device could not be analyzed (format is unknown).
|
|
* ready: partition detection is done and the device is can do block io.
|
|
* online: the device accepts requests from the block device queue.
|
|
*
|
|
* Things to do for startup state transitions:
|
|
* new -> known: find discipline for the device and create devfs entries.
|
|
* known -> basic: request irq line for the device.
|
|
* basic -> ready: do the initial analysis, e.g. format detection,
|
|
* do block device setup and detect partitions.
|
|
* ready -> online: schedule the device tasklet.
|
|
* Things to do for shutdown state transitions:
|
|
* online -> ready: just set the new device state.
|
|
* ready -> basic: flush requests from the block device layer, clear
|
|
* partition information and reset format information.
|
|
* basic -> known: terminate all requests and free irq.
|
|
* known -> new: remove devfs entries and forget discipline.
|
|
*/
|
|
|
|
#define DASD_STATE_NEW 0
|
|
#define DASD_STATE_KNOWN 1
|
|
#define DASD_STATE_BASIC 2
|
|
#define DASD_STATE_UNFMT 3
|
|
#define DASD_STATE_READY 4
|
|
#define DASD_STATE_ONLINE 5
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/wait.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/genhd.h>
|
|
#include <linux/hdreg.h>
|
|
#include <linux/interrupt.h>
|
|
#include <asm/ccwdev.h>
|
|
#include <linux/workqueue.h>
|
|
#include <asm/debug.h>
|
|
#include <asm/dasd.h>
|
|
#include <asm/idals.h>
|
|
|
|
/*
|
|
* SECTION: Type definitions
|
|
*/
|
|
struct dasd_device;
|
|
|
|
typedef enum {
|
|
dasd_era_fatal = -1, /* no chance to recover */
|
|
dasd_era_none = 0, /* don't recover, everything alright */
|
|
dasd_era_msg = 1, /* don't recover, just report... */
|
|
dasd_era_recover = 2 /* recovery action recommended */
|
|
} dasd_era_t;
|
|
|
|
/* BIT DEFINITIONS FOR SENSE DATA */
|
|
#define DASD_SENSE_BIT_0 0x80
|
|
#define DASD_SENSE_BIT_1 0x40
|
|
#define DASD_SENSE_BIT_2 0x20
|
|
#define DASD_SENSE_BIT_3 0x10
|
|
|
|
/*
|
|
* SECTION: MACROs for klogd and s390 debug feature (dbf)
|
|
*/
|
|
#define DBF_DEV_EVENT(d_level, d_device, d_str, d_data...) \
|
|
do { \
|
|
debug_sprintf_event(d_device->debug_area, \
|
|
d_level, \
|
|
d_str "\n", \
|
|
d_data); \
|
|
} while(0)
|
|
|
|
#define DBF_DEV_EXC(d_level, d_device, d_str, d_data...) \
|
|
do { \
|
|
debug_sprintf_exception(d_device->debug_area, \
|
|
d_level, \
|
|
d_str "\n", \
|
|
d_data); \
|
|
} while(0)
|
|
|
|
#define DBF_EVENT(d_level, d_str, d_data...)\
|
|
do { \
|
|
debug_sprintf_event(dasd_debug_area, \
|
|
d_level,\
|
|
d_str "\n", \
|
|
d_data); \
|
|
} while(0)
|
|
|
|
#define DBF_EXC(d_level, d_str, d_data...)\
|
|
do { \
|
|
debug_sprintf_exception(dasd_debug_area, \
|
|
d_level,\
|
|
d_str "\n", \
|
|
d_data); \
|
|
} while(0)
|
|
|
|
/* definition of dbf debug levels */
|
|
#define DBF_EMERG 0 /* system is unusable */
|
|
#define DBF_ALERT 1 /* action must be taken immediately */
|
|
#define DBF_CRIT 2 /* critical conditions */
|
|
#define DBF_ERR 3 /* error conditions */
|
|
#define DBF_WARNING 4 /* warning conditions */
|
|
#define DBF_NOTICE 5 /* normal but significant condition */
|
|
#define DBF_INFO 6 /* informational */
|
|
#define DBF_DEBUG 6 /* debug-level messages */
|
|
|
|
/* messages to be written via klogd and dbf */
|
|
#define DEV_MESSAGE(d_loglevel,d_device,d_string,d_args...)\
|
|
do { \
|
|
printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \
|
|
d_device->cdev->dev.bus_id, d_args); \
|
|
DBF_DEV_EVENT(DBF_ALERT, d_device, d_string, d_args); \
|
|
} while(0)
|
|
|
|
#define MESSAGE(d_loglevel,d_string,d_args...)\
|
|
do { \
|
|
printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \
|
|
DBF_EVENT(DBF_ALERT, d_string, d_args); \
|
|
} while(0)
|
|
|
|
/* messages to be written via klogd only */
|
|
#define DEV_MESSAGE_LOG(d_loglevel,d_device,d_string,d_args...)\
|
|
do { \
|
|
printk(d_loglevel PRINTK_HEADER " %s: " d_string "\n", \
|
|
d_device->cdev->dev.bus_id, d_args); \
|
|
} while(0)
|
|
|
|
#define MESSAGE_LOG(d_loglevel,d_string,d_args...)\
|
|
do { \
|
|
printk(d_loglevel PRINTK_HEADER " " d_string "\n", d_args); \
|
|
} while(0)
|
|
|
|
struct dasd_ccw_req {
|
|
unsigned int magic; /* Eye catcher */
|
|
struct list_head list; /* list_head for request queueing. */
|
|
|
|
/* Where to execute what... */
|
|
struct dasd_device *device; /* device the request is for */
|
|
struct ccw1 *cpaddr; /* address of channel program */
|
|
char status; /* status of this request */
|
|
short retries; /* A retry counter */
|
|
unsigned long flags; /* flags of this request */
|
|
|
|
/* ... and how */
|
|
unsigned long starttime; /* jiffies time of request start */
|
|
int expires; /* expiration period in jiffies */
|
|
char lpm; /* logical path mask */
|
|
void *data; /* pointer to data area */
|
|
|
|
/* these are important for recovering erroneous requests */
|
|
struct irb irb; /* device status in case of an error */
|
|
struct dasd_ccw_req *refers; /* ERP-chain queueing. */
|
|
void *function; /* originating ERP action */
|
|
|
|
/* these are for statistics only */
|
|
unsigned long long buildclk; /* TOD-clock of request generation */
|
|
unsigned long long startclk; /* TOD-clock of request start */
|
|
unsigned long long stopclk; /* TOD-clock of request interrupt */
|
|
unsigned long long endclk; /* TOD-clock of request termination */
|
|
|
|
/* Callback that is called after reaching final status. */
|
|
void (*callback)(struct dasd_ccw_req *, void *data);
|
|
void *callback_data;
|
|
};
|
|
|
|
/*
|
|
* dasd_ccw_req -> status can be:
|
|
*/
|
|
#define DASD_CQR_FILLED 0x00 /* request is ready to be processed */
|
|
#define DASD_CQR_QUEUED 0x01 /* request is queued to be processed */
|
|
#define DASD_CQR_IN_IO 0x02 /* request is currently in IO */
|
|
#define DASD_CQR_DONE 0x03 /* request is completed successfully */
|
|
#define DASD_CQR_ERROR 0x04 /* request is completed with error */
|
|
#define DASD_CQR_FAILED 0x05 /* request is finally failed */
|
|
#define DASD_CQR_CLEAR 0x06 /* request is clear pending */
|
|
|
|
/* per dasd_ccw_req flags */
|
|
#define DASD_CQR_FLAGS_USE_ERP 0 /* use ERP for this request */
|
|
#define DASD_CQR_FLAGS_FAILFAST 1 /* FAILFAST */
|
|
|
|
/* Signature for error recovery functions. */
|
|
typedef struct dasd_ccw_req *(*dasd_erp_fn_t) (struct dasd_ccw_req *);
|
|
|
|
/*
|
|
* the struct dasd_discipline is
|
|
* sth like a table of virtual functions, if you think of dasd_eckd
|
|
* inheriting dasd...
|
|
* no, currently we are not planning to reimplement the driver in C++
|
|
*/
|
|
struct dasd_discipline {
|
|
struct module *owner;
|
|
char ebcname[8]; /* a name used for tagging and printks */
|
|
char name[8]; /* a name used for tagging and printks */
|
|
int max_blocks; /* maximum number of blocks to be chained */
|
|
|
|
struct list_head list; /* used for list of disciplines */
|
|
|
|
/*
|
|
* Device recognition functions. check_device is used to verify
|
|
* the sense data and the information returned by read device
|
|
* characteristics. It returns 0 if the discipline can be used
|
|
* for the device in question.
|
|
* do_analysis is used in the step from device state "basic" to
|
|
* state "accept". It returns 0 if the device can be made ready,
|
|
* it returns -EMEDIUMTYPE if the device can't be made ready or
|
|
* -EAGAIN if do_analysis started a ccw that needs to complete
|
|
* before the analysis may be repeated.
|
|
*/
|
|
int (*check_device)(struct dasd_device *);
|
|
int (*do_analysis) (struct dasd_device *);
|
|
|
|
/*
|
|
* Device operation functions. build_cp creates a ccw chain for
|
|
* a block device request, start_io starts the request and
|
|
* term_IO cancels it (e.g. in case of a timeout). format_device
|
|
* returns a ccw chain to be used to format the device.
|
|
*/
|
|
struct dasd_ccw_req *(*build_cp) (struct dasd_device *,
|
|
struct request *);
|
|
int (*start_IO) (struct dasd_ccw_req *);
|
|
int (*term_IO) (struct dasd_ccw_req *);
|
|
struct dasd_ccw_req *(*format_device) (struct dasd_device *,
|
|
struct format_data_t *);
|
|
int (*free_cp) (struct dasd_ccw_req *, struct request *);
|
|
/*
|
|
* Error recovery functions. examine_error() returns a value that
|
|
* indicates what to do for an error condition. If examine_error()
|
|
* returns 'dasd_era_recover' erp_action() is called to create a
|
|
* special error recovery ccw. erp_postaction() is called after
|
|
* an error recovery ccw has finished its execution. dump_sense
|
|
* is called for every error condition to print the sense data
|
|
* to the console.
|
|
*/
|
|
dasd_era_t(*examine_error) (struct dasd_ccw_req *, struct irb *);
|
|
dasd_erp_fn_t(*erp_action) (struct dasd_ccw_req *);
|
|
dasd_erp_fn_t(*erp_postaction) (struct dasd_ccw_req *);
|
|
void (*dump_sense) (struct dasd_device *, struct dasd_ccw_req *,
|
|
struct irb *);
|
|
|
|
/* i/o control functions. */
|
|
int (*fill_geometry) (struct dasd_device *, struct hd_geometry *);
|
|
int (*fill_info) (struct dasd_device *, struct dasd_information2_t *);
|
|
int (*ioctl) (struct dasd_device *, unsigned int, void __user *);
|
|
};
|
|
|
|
extern struct dasd_discipline *dasd_diag_discipline_pointer;
|
|
|
|
/*
|
|
* Unique identifier for dasd device.
|
|
*/
|
|
struct dasd_uid {
|
|
__u8 alias;
|
|
char vendor[4];
|
|
char serial[15];
|
|
__u16 ssid;
|
|
__u8 unit_addr;
|
|
};
|
|
|
|
/*
|
|
* Notification numbers for extended error reporting notifications:
|
|
* The DASD_EER_DISABLE notification is sent before a dasd_device (and it's
|
|
* eer pointer) is freed. The error reporting module needs to do all necessary
|
|
* cleanup steps.
|
|
* The DASD_EER_TRIGGER notification sends the actual error reports (triggers).
|
|
*/
|
|
#define DASD_EER_DISABLE 0
|
|
#define DASD_EER_TRIGGER 1
|
|
|
|
/* Trigger IDs for extended error reporting DASD_EER_TRIGGER notification */
|
|
#define DASD_EER_FATALERROR 1
|
|
#define DASD_EER_NOPATH 2
|
|
#define DASD_EER_STATECHANGE 3
|
|
#define DASD_EER_PPRCSUSPEND 4
|
|
|
|
struct dasd_device {
|
|
/* Block device stuff. */
|
|
struct gendisk *gdp;
|
|
struct request_queue *request_queue;
|
|
spinlock_t request_queue_lock;
|
|
struct block_device *bdev;
|
|
unsigned int devindex;
|
|
unsigned long blocks; /* size of volume in blocks */
|
|
unsigned int bp_block; /* bytes per block */
|
|
unsigned int s2b_shift; /* log2 (bp_block/512) */
|
|
unsigned long flags; /* per device flags */
|
|
unsigned short features; /* copy of devmap-features (read-only!) */
|
|
|
|
/* extended error reporting stuff (eer) */
|
|
struct dasd_ccw_req *eer_cqr;
|
|
|
|
/* Device discipline stuff. */
|
|
struct dasd_discipline *discipline;
|
|
struct dasd_discipline *base_discipline;
|
|
char *private;
|
|
|
|
/* Device state and target state. */
|
|
int state, target;
|
|
int stopped; /* device (ccw_device_start) was stopped */
|
|
|
|
/* Open and reference count. */
|
|
atomic_t ref_count;
|
|
atomic_t open_count;
|
|
|
|
/* ccw queue and memory for static ccw/erp buffers. */
|
|
struct list_head ccw_queue;
|
|
spinlock_t mem_lock;
|
|
void *ccw_mem;
|
|
void *erp_mem;
|
|
struct list_head ccw_chunks;
|
|
struct list_head erp_chunks;
|
|
|
|
atomic_t tasklet_scheduled;
|
|
struct tasklet_struct tasklet;
|
|
struct work_struct kick_work;
|
|
struct timer_list timer;
|
|
|
|
debug_info_t *debug_area;
|
|
|
|
struct ccw_device *cdev;
|
|
|
|
#ifdef CONFIG_DASD_PROFILE
|
|
struct dasd_profile_info_t profile;
|
|
#endif
|
|
};
|
|
|
|
/* reasons why device (ccw_device_start) was stopped */
|
|
#define DASD_STOPPED_NOT_ACC 1 /* not accessible */
|
|
#define DASD_STOPPED_QUIESCE 2 /* Quiesced */
|
|
#define DASD_STOPPED_PENDING 4 /* long busy */
|
|
#define DASD_STOPPED_DC_WAIT 8 /* disconnected, wait */
|
|
#define DASD_STOPPED_DC_EIO 16 /* disconnected, return -EIO */
|
|
|
|
/* per device flags */
|
|
#define DASD_FLAG_DSC_ERROR 2 /* return -EIO when disconnected */
|
|
#define DASD_FLAG_OFFLINE 3 /* device is in offline processing */
|
|
#define DASD_FLAG_EER_SNSS 4 /* A SNSS is required */
|
|
#define DASD_FLAG_EER_IN_USE 5 /* A SNSS request is running */
|
|
|
|
void dasd_put_device_wake(struct dasd_device *);
|
|
|
|
/*
|
|
* Reference count inliners
|
|
*/
|
|
static inline void
|
|
dasd_get_device(struct dasd_device *device)
|
|
{
|
|
atomic_inc(&device->ref_count);
|
|
}
|
|
|
|
static inline void
|
|
dasd_put_device(struct dasd_device *device)
|
|
{
|
|
if (atomic_dec_return(&device->ref_count) == 0)
|
|
dasd_put_device_wake(device);
|
|
}
|
|
|
|
/*
|
|
* The static memory in ccw_mem and erp_mem is managed by a sorted
|
|
* list of free memory chunks.
|
|
*/
|
|
struct dasd_mchunk
|
|
{
|
|
struct list_head list;
|
|
unsigned long size;
|
|
} __attribute__ ((aligned(8)));
|
|
|
|
static inline void
|
|
dasd_init_chunklist(struct list_head *chunk_list, void *mem,
|
|
unsigned long size)
|
|
{
|
|
struct dasd_mchunk *chunk;
|
|
|
|
INIT_LIST_HEAD(chunk_list);
|
|
chunk = (struct dasd_mchunk *) mem;
|
|
chunk->size = size - sizeof(struct dasd_mchunk);
|
|
list_add(&chunk->list, chunk_list);
|
|
}
|
|
|
|
static inline void *
|
|
dasd_alloc_chunk(struct list_head *chunk_list, unsigned long size)
|
|
{
|
|
struct dasd_mchunk *chunk, *tmp;
|
|
|
|
size = (size + 7L) & -8L;
|
|
list_for_each_entry(chunk, chunk_list, list) {
|
|
if (chunk->size < size)
|
|
continue;
|
|
if (chunk->size > size + sizeof(struct dasd_mchunk)) {
|
|
char *endaddr = (char *) (chunk + 1) + chunk->size;
|
|
tmp = (struct dasd_mchunk *) (endaddr - size) - 1;
|
|
tmp->size = size;
|
|
chunk->size -= size + sizeof(struct dasd_mchunk);
|
|
chunk = tmp;
|
|
} else
|
|
list_del(&chunk->list);
|
|
return (void *) (chunk + 1);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static inline void
|
|
dasd_free_chunk(struct list_head *chunk_list, void *mem)
|
|
{
|
|
struct dasd_mchunk *chunk, *tmp;
|
|
struct list_head *p, *left;
|
|
|
|
chunk = (struct dasd_mchunk *)
|
|
((char *) mem - sizeof(struct dasd_mchunk));
|
|
/* Find out the left neighbour in chunk_list. */
|
|
left = chunk_list;
|
|
list_for_each(p, chunk_list) {
|
|
if (list_entry(p, struct dasd_mchunk, list) > chunk)
|
|
break;
|
|
left = p;
|
|
}
|
|
/* Try to merge with right neighbour = next element from left. */
|
|
if (left->next != chunk_list) {
|
|
tmp = list_entry(left->next, struct dasd_mchunk, list);
|
|
if ((char *) (chunk + 1) + chunk->size == (char *) tmp) {
|
|
list_del(&tmp->list);
|
|
chunk->size += tmp->size + sizeof(struct dasd_mchunk);
|
|
}
|
|
}
|
|
/* Try to merge with left neighbour. */
|
|
if (left != chunk_list) {
|
|
tmp = list_entry(left, struct dasd_mchunk, list);
|
|
if ((char *) (tmp + 1) + tmp->size == (char *) chunk) {
|
|
tmp->size += chunk->size + sizeof(struct dasd_mchunk);
|
|
return;
|
|
}
|
|
}
|
|
__list_add(&chunk->list, left, left->next);
|
|
}
|
|
|
|
/*
|
|
* Check if bsize is in { 512, 1024, 2048, 4096 }
|
|
*/
|
|
static inline int
|
|
dasd_check_blocksize(int bsize)
|
|
{
|
|
if (bsize < 512 || bsize > 4096 || (bsize & (bsize - 1)) != 0)
|
|
return -EMEDIUMTYPE;
|
|
return 0;
|
|
}
|
|
|
|
/* externals in dasd.c */
|
|
#define DASD_PROFILE_ON 1
|
|
#define DASD_PROFILE_OFF 0
|
|
|
|
extern debug_info_t *dasd_debug_area;
|
|
extern struct dasd_profile_info_t dasd_global_profile;
|
|
extern unsigned int dasd_profile_level;
|
|
extern struct block_device_operations dasd_device_operations;
|
|
|
|
extern struct kmem_cache *dasd_page_cache;
|
|
|
|
struct dasd_ccw_req *
|
|
dasd_kmalloc_request(char *, int, int, struct dasd_device *);
|
|
struct dasd_ccw_req *
|
|
dasd_smalloc_request(char *, int, int, struct dasd_device *);
|
|
void dasd_kfree_request(struct dasd_ccw_req *, struct dasd_device *);
|
|
void dasd_sfree_request(struct dasd_ccw_req *, struct dasd_device *);
|
|
|
|
static inline int
|
|
dasd_kmalloc_set_cda(struct ccw1 *ccw, void *cda, struct dasd_device *device)
|
|
{
|
|
return set_normalized_cda(ccw, cda);
|
|
}
|
|
|
|
struct dasd_device *dasd_alloc_device(void);
|
|
void dasd_free_device(struct dasd_device *);
|
|
|
|
void dasd_enable_device(struct dasd_device *);
|
|
void dasd_set_target_state(struct dasd_device *, int);
|
|
void dasd_kick_device(struct dasd_device *);
|
|
|
|
void dasd_add_request_head(struct dasd_ccw_req *);
|
|
void dasd_add_request_tail(struct dasd_ccw_req *);
|
|
int dasd_start_IO(struct dasd_ccw_req *);
|
|
int dasd_term_IO(struct dasd_ccw_req *);
|
|
void dasd_schedule_bh(struct dasd_device *);
|
|
int dasd_sleep_on(struct dasd_ccw_req *);
|
|
int dasd_sleep_on_immediatly(struct dasd_ccw_req *);
|
|
int dasd_sleep_on_interruptible(struct dasd_ccw_req *);
|
|
void dasd_set_timer(struct dasd_device *, int);
|
|
void dasd_clear_timer(struct dasd_device *);
|
|
int dasd_cancel_req(struct dasd_ccw_req *);
|
|
int dasd_generic_probe (struct ccw_device *, struct dasd_discipline *);
|
|
void dasd_generic_remove (struct ccw_device *cdev);
|
|
int dasd_generic_set_online(struct ccw_device *, struct dasd_discipline *);
|
|
int dasd_generic_set_offline (struct ccw_device *cdev);
|
|
int dasd_generic_notify(struct ccw_device *, int);
|
|
|
|
int dasd_generic_read_dev_chars(struct dasd_device *, char *, void **, int);
|
|
|
|
/* externals in dasd_devmap.c */
|
|
extern int dasd_max_devindex;
|
|
extern int dasd_probeonly;
|
|
extern int dasd_autodetect;
|
|
extern int dasd_nopav;
|
|
|
|
int dasd_devmap_init(void);
|
|
void dasd_devmap_exit(void);
|
|
|
|
struct dasd_device *dasd_create_device(struct ccw_device *);
|
|
void dasd_delete_device(struct dasd_device *);
|
|
|
|
int dasd_get_uid(struct ccw_device *, struct dasd_uid *);
|
|
int dasd_set_uid(struct ccw_device *, struct dasd_uid *);
|
|
int dasd_get_feature(struct ccw_device *, int);
|
|
int dasd_set_feature(struct ccw_device *, int, int);
|
|
|
|
int dasd_add_sysfs_files(struct ccw_device *);
|
|
void dasd_remove_sysfs_files(struct ccw_device *);
|
|
|
|
struct dasd_device *dasd_device_from_cdev(struct ccw_device *);
|
|
struct dasd_device *dasd_device_from_cdev_locked(struct ccw_device *);
|
|
struct dasd_device *dasd_device_from_devindex(int);
|
|
|
|
int dasd_parse(void);
|
|
int dasd_busid_known(char *);
|
|
|
|
/* externals in dasd_gendisk.c */
|
|
int dasd_gendisk_init(void);
|
|
void dasd_gendisk_exit(void);
|
|
int dasd_gendisk_alloc(struct dasd_device *);
|
|
void dasd_gendisk_free(struct dasd_device *);
|
|
int dasd_scan_partitions(struct dasd_device *);
|
|
void dasd_destroy_partitions(struct dasd_device *);
|
|
|
|
/* externals in dasd_ioctl.c */
|
|
int dasd_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
|
|
long dasd_compat_ioctl(struct file *, unsigned int, unsigned long);
|
|
|
|
/* externals in dasd_proc.c */
|
|
int dasd_proc_init(void);
|
|
void dasd_proc_exit(void);
|
|
|
|
/* externals in dasd_erp.c */
|
|
struct dasd_ccw_req *dasd_default_erp_action(struct dasd_ccw_req *);
|
|
struct dasd_ccw_req *dasd_default_erp_postaction(struct dasd_ccw_req *);
|
|
struct dasd_ccw_req *dasd_alloc_erp_request(char *, int, int,
|
|
struct dasd_device *);
|
|
void dasd_free_erp_request(struct dasd_ccw_req *, struct dasd_device *);
|
|
void dasd_log_sense(struct dasd_ccw_req *, struct irb *);
|
|
|
|
/* externals in dasd_3370_erp.c */
|
|
dasd_era_t dasd_3370_erp_examine(struct dasd_ccw_req *, struct irb *);
|
|
|
|
/* externals in dasd_3990_erp.c */
|
|
dasd_era_t dasd_3990_erp_examine(struct dasd_ccw_req *, struct irb *);
|
|
struct dasd_ccw_req *dasd_3990_erp_action(struct dasd_ccw_req *);
|
|
|
|
/* externals in dasd_9336_erp.c */
|
|
dasd_era_t dasd_9336_erp_examine(struct dasd_ccw_req *, struct irb *);
|
|
|
|
/* externals in dasd_9336_erp.c */
|
|
dasd_era_t dasd_9343_erp_examine(struct dasd_ccw_req *, struct irb *);
|
|
struct dasd_ccw_req *dasd_9343_erp_action(struct dasd_ccw_req *);
|
|
|
|
/* externals in dasd_eer.c */
|
|
#ifdef CONFIG_DASD_EER
|
|
int dasd_eer_init(void);
|
|
void dasd_eer_exit(void);
|
|
int dasd_eer_enable(struct dasd_device *);
|
|
void dasd_eer_disable(struct dasd_device *);
|
|
void dasd_eer_write(struct dasd_device *, struct dasd_ccw_req *cqr,
|
|
unsigned int id);
|
|
void dasd_eer_snss(struct dasd_device *);
|
|
|
|
static inline int dasd_eer_enabled(struct dasd_device *device)
|
|
{
|
|
return device->eer_cqr != NULL;
|
|
}
|
|
#else
|
|
#define dasd_eer_init() (0)
|
|
#define dasd_eer_exit() do { } while (0)
|
|
#define dasd_eer_enable(d) (0)
|
|
#define dasd_eer_disable(d) do { } while (0)
|
|
#define dasd_eer_write(d,c,i) do { } while (0)
|
|
#define dasd_eer_snss(d) do { } while (0)
|
|
#define dasd_eer_enabled(d) (0)
|
|
#endif /* CONFIG_DASD_ERR */
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* DASD_H */
|