dasd.c File Reference

#include <linux/kmod.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/ctype.h>
#include <linux/major.h>
#include <linux/slab.h>
#include <linux/hdreg.h>
#include <linux/async.h>
#include <linux/mutex.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/vmalloc.h>
#include <asm/ccwdev.h>
#include <asm/ebcdic.h>
#include <asm/idals.h>
#include <asm/itcw.h>
#include <asm/diag.h>
#include "dasd_int.h"

Go to the source code of this file.

Macros
#define	KMSG_COMPONENT   "dasd"
#define	pr_fmt(fmt)   KMSG_COMPONENT ": " fmt
#define	PRINTK_HEADER   "dasd:"
#define	DASD_CHANQ_MAX_SIZE   4
#define	DASD_SLEEPON_START_TAG   (void *) 1
#define	DASD_SLEEPON_END_TAG   (void *) 2
#define	dasd_profile_start(block, cqr, req)   do {} while (0)
#define	dasd_profile_end(block, cqr, req)   do {} while (0)

Functions
void	dasd_int_handler (struct ccw_device *, unsigned long, struct irb *)
	MODULE_AUTHOR ("Holger Smolinski <[email protected]>")
	MODULE_DESCRIPTION ("Linux on S/390 DASD device driver,"" Copyright IBM Corp. 2000")
	MODULE_SUPPORTED_DEVICE ("dasd")
	MODULE_LICENSE ("GPL")
struct dasd_device *	dasd_alloc_device (void)
void	dasd_free_device (struct dasd_device *device)
struct dasd_block *	dasd_alloc_block (void)
void	dasd_free_block (struct dasd_block *block)
void	dasd_kick_device (struct dasd_device *device)
void	dasd_reload_device (struct dasd_device *device)
	EXPORT_SYMBOL (dasd_reload_device)
void	dasd_restore_device (struct dasd_device *device)
void	dasd_set_target_state (struct dasd_device *device, int target)
void	dasd_enable_device (struct dasd_device *device)
int	dasd_stats_generic_show (struct seq_file *m, void *v)
int	dasd_profile_on (struct dasd_profile *profile)
struct dasd_ccw_req *	dasd_kmalloc_request (int magic, int cplength, int datasize, struct dasd_device *device)
struct dasd_ccw_req *	dasd_smalloc_request (int magic, int cplength, int datasize, struct dasd_device *device)
void	dasd_kfree_request (struct dasd_ccw_req *cqr, struct dasd_device *device)
void	dasd_sfree_request (struct dasd_ccw_req *cqr, struct dasd_device *device)
int	dasd_term_IO (struct dasd_ccw_req *cqr)
int	dasd_start_IO (struct dasd_ccw_req *cqr)
void	dasd_device_set_timer (struct dasd_device *device, int expires)
void	dasd_device_clear_timer (struct dasd_device *device)
void	dasd_generic_handle_state_change (struct dasd_device *device)
enum uc_todo	dasd_generic_uc_handler (struct ccw_device *cdev, struct irb *irb)
	EXPORT_SYMBOL_GPL (dasd_generic_uc_handler)
int	dasd_flush_device_queue (struct dasd_device *device)
void	dasd_schedule_device_bh (struct dasd_device *device)
void	dasd_device_set_stop_bits (struct dasd_device *device, int bits)
	EXPORT_SYMBOL_GPL (dasd_device_set_stop_bits)
void	dasd_device_remove_stop_bits (struct dasd_device *device, int bits)
	EXPORT_SYMBOL_GPL (dasd_device_remove_stop_bits)
void	dasd_add_request_head (struct dasd_ccw_req *cqr)
void	dasd_add_request_tail (struct dasd_ccw_req *cqr)
void	dasd_wakeup_cb (struct dasd_ccw_req *cqr, void *data)
	EXPORT_SYMBOL_GPL (dasd_wakeup_cb)
int	dasd_sleep_on (struct dasd_ccw_req *cqr)
int	dasd_sleep_on_interruptible (struct dasd_ccw_req *cqr)
int	dasd_sleep_on_immediatly (struct dasd_ccw_req *cqr)
int	dasd_cancel_req (struct dasd_ccw_req *cqr)
void	dasd_block_set_timer (struct dasd_block *block, int expires)
void	dasd_block_clear_timer (struct dasd_block *block)
void	dasd_schedule_block_bh (struct dasd_block *block)
int	dasd_device_is_ro (struct dasd_device *device)
	EXPORT_SYMBOL_GPL (dasd_device_is_ro)
int	dasd_generic_probe (struct ccw_device *cdev, struct dasd_discipline *discipline)
void	dasd_generic_remove (struct ccw_device *cdev)
int	dasd_generic_set_online (struct ccw_device *cdev, struct dasd_discipline *base_discipline)
int	dasd_generic_set_offline (struct ccw_device *cdev)
int	dasd_generic_last_path_gone (struct dasd_device *device)
	EXPORT_SYMBOL_GPL (dasd_generic_last_path_gone)
int	dasd_generic_path_operational (struct dasd_device *device)
	EXPORT_SYMBOL_GPL (dasd_generic_path_operational)
int	dasd_generic_notify (struct ccw_device *cdev, int event)
void	dasd_generic_path_event (struct ccw_device *cdev, int *path_event)
	EXPORT_SYMBOL_GPL (dasd_generic_path_event)
int	dasd_generic_verify_path (struct dasd_device *device, __u8 lpm)
	EXPORT_SYMBOL_GPL (dasd_generic_verify_path)
int	dasd_generic_pm_freeze (struct ccw_device *cdev)
	EXPORT_SYMBOL_GPL (dasd_generic_pm_freeze)
int	dasd_generic_restore_device (struct ccw_device *cdev)
	EXPORT_SYMBOL_GPL (dasd_generic_restore_device)
int	dasd_generic_read_dev_chars (struct dasd_device *device, int magic, void *rdc_buffer, int rdc_buffer_size)
	EXPORT_SYMBOL_GPL (dasd_generic_read_dev_chars)
char *	dasd_get_sense (struct irb *irb)
	EXPORT_SYMBOL_GPL (dasd_get_sense)
void	dasd_generic_shutdown (struct ccw_device *cdev)
	EXPORT_SYMBOL_GPL (dasd_generic_shutdown)
	module_init (dasd_init)
	module_exit (dasd_exit)
	EXPORT_SYMBOL (dasd_debug_area)
	EXPORT_SYMBOL (dasd_diag_discipline_pointer)
	EXPORT_SYMBOL (dasd_add_request_head)
	EXPORT_SYMBOL (dasd_add_request_tail)
	EXPORT_SYMBOL (dasd_cancel_req)
	EXPORT_SYMBOL (dasd_device_clear_timer)
	EXPORT_SYMBOL (dasd_block_clear_timer)
	EXPORT_SYMBOL (dasd_enable_device)
	EXPORT_SYMBOL (dasd_int_handler)
	EXPORT_SYMBOL (dasd_kfree_request)
	EXPORT_SYMBOL (dasd_kick_device)
	EXPORT_SYMBOL (dasd_kmalloc_request)
	EXPORT_SYMBOL (dasd_schedule_device_bh)
	EXPORT_SYMBOL (dasd_schedule_block_bh)
	EXPORT_SYMBOL (dasd_set_target_state)
	EXPORT_SYMBOL (dasd_device_set_timer)
	EXPORT_SYMBOL (dasd_block_set_timer)
	EXPORT_SYMBOL (dasd_sfree_request)
	EXPORT_SYMBOL (dasd_sleep_on)
	EXPORT_SYMBOL (dasd_sleep_on_immediatly)
	EXPORT_SYMBOL (dasd_sleep_on_interruptible)
	EXPORT_SYMBOL (dasd_smalloc_request)
	EXPORT_SYMBOL (dasd_start_IO)
	EXPORT_SYMBOL (dasd_term_IO)
	EXPORT_SYMBOL_GPL (dasd_generic_probe)
	EXPORT_SYMBOL_GPL (dasd_generic_remove)
	EXPORT_SYMBOL_GPL (dasd_generic_notify)
	EXPORT_SYMBOL_GPL (dasd_generic_set_online)
	EXPORT_SYMBOL_GPL (dasd_generic_set_offline)
	EXPORT_SYMBOL_GPL (dasd_generic_handle_state_change)
	EXPORT_SYMBOL_GPL (dasd_flush_device_queue)
	EXPORT_SYMBOL_GPL (dasd_alloc_block)
	EXPORT_SYMBOL_GPL (dasd_free_block)

Variables
debug_info_t *	dasd_debug_area
struct dasd_discipline *	dasd_diag_discipline_pointer
unsigned int	dasd_global_profile_level = DASD_PROFILE_OFF
struct block_device_operations	dasd_device_operations

Macro Definition Documentation

#define DASD_CHANQ_MAX_SIZE   4

Definition at line 39 of file dasd.c.

#define dasd_profile_end	(		block,
			cqr,
			req
	)		do {} while (0)

Definition at line 1150 of file dasd.c.

#define dasd_profile_start	(		block,
			cqr,
			req
	)		do {} while (0)

Definition at line 1149 of file dasd.c.

#define DASD_SLEEPON_END_TAG   (void *) 2

Definition at line 42 of file dasd.c.

#define DASD_SLEEPON_START_TAG   (void *) 1

Definition at line 41 of file dasd.c.

#define KMSG_COMPONENT   "dasd"

Definition at line 10 of file dasd.c.

#define pr_fmt

(

fmt

)

KMSG_COMPONENT ": " fmt

Definition at line 11 of file dasd.c.

#define PRINTK_HEADER   "dasd:"

Definition at line 33 of file dasd.c.

Function Documentation

void dasd_add_request_head

(

struct dasd_ccw_req *

cqr

)

Definition at line 2032 of file dasd.c.

void dasd_add_request_tail

(

struct dasd_ccw_req *

cqr

)

Definition at line 2050 of file dasd.c.

struct dasd_block* dasd_alloc_block ( void  )

read

Definition at line 146 of file dasd.c.

struct dasd_device* dasd_alloc_device ( void  )

read

Definition at line 89 of file dasd.c.

void dasd_block_clear_timer

(

struct dasd_block *

block

)

Definition at line 2374 of file dasd.c.

void dasd_block_set_timer	(	struct dasd_block *	block,
		int	expires
	)

Definition at line 2363 of file dasd.c.

int dasd_cancel_req

(

struct dasd_ccw_req *

cqr

)

Definition at line 2305 of file dasd.c.

void dasd_device_clear_timer

(

struct dasd_device *

device

)

Definition at line 1531 of file dasd.c.

int dasd_device_is_ro

(

struct dasd_device *

device

)

Definition at line 2953 of file dasd.c.

void dasd_device_remove_stop_bits	(	struct dasd_device *	device,
		int	bits
	)

Definition at line 2020 of file dasd.c.

void dasd_device_set_stop_bits	(	struct dasd_device *	device,
		int	bits
	)

Definition at line 2014 of file dasd.c.

void dasd_device_set_timer	(	struct dasd_device *	device,
		int	expires
	)

Definition at line 1520 of file dasd.c.

void dasd_enable_device

(

struct dasd_device *

device

)

Definition at line 635 of file dasd.c.

int dasd_flush_device_queue

(

struct dasd_device *

device

)

Definition at line 1925 of file dasd.c.

void dasd_free_block

(

struct dasd_block *

block

)

Definition at line 174 of file dasd.c.

void dasd_free_device

(

struct dasd_device *

device

)

Definition at line 135 of file dasd.c.

void dasd_generic_handle_state_change

(

struct dasd_device *

device

)

Definition at line 1577 of file dasd.c.

int dasd_generic_last_path_gone

(

struct dasd_device *

device

)

Definition at line 3175 of file dasd.c.

int dasd_generic_notify	(	struct ccw_device *	cdev,
		int	event
	)

Definition at line 3219 of file dasd.c.

void dasd_generic_path_event	(	struct ccw_device *	cdev,
		int *	path_event
	)

Definition at line 3247 of file dasd.c.

int dasd_generic_path_operational

(

struct dasd_device *

device

)

Definition at line 3201 of file dasd.c.

int dasd_generic_pm_freeze

(

struct ccw_device *

cdev

)

Definition at line 3306 of file dasd.c.

int dasd_generic_probe	(	struct ccw_device *	cdev,
		struct dasd_discipline *	discipline
	)

Definition at line 2991 of file dasd.c.

int dasd_generic_read_dev_chars	(	struct dasd_device *	device,
		int	magic,
		void *	rdc_buffer,
		int	rdc_buffer_size
	)

Definition at line 3441 of file dasd.c.

void dasd_generic_remove

(

struct ccw_device *

cdev

)

Definition at line 3020 of file dasd.c.

int dasd_generic_restore_device

(

struct ccw_device *

cdev

)

Definition at line 3363 of file dasd.c.

int dasd_generic_set_offline

(

struct ccw_device *

cdev

)

Definition at line 3125 of file dasd.c.

int dasd_generic_set_online	(	struct ccw_device *	cdev,
		struct dasd_discipline *	base_discipline
	)

Definition at line 3058 of file dasd.c.

void dasd_generic_shutdown

(

struct ccw_device *

cdev

)

Definition at line 3501 of file dasd.c.

enum uc_todo dasd_generic_uc_handler	(	struct ccw_device *	cdev,
		struct irb *	irb
	)

Definition at line 1709 of file dasd.c.

int dasd_generic_verify_path	(	struct dasd_device *	device,
		__u8	lpm
	)

Definition at line 3294 of file dasd.c.

char* dasd_get_sense

(

struct irb *

irb

)

Definition at line 3464 of file dasd.c.

void dasd_int_handler	(	struct ccw_device *	cdev,
		unsigned long	intparm,
		struct irb *	irb
	)

Definition at line 1591 of file dasd.c.

void dasd_kfree_request	(	struct dasd_ccw_req *	cqr,
		struct dasd_device *	device
	)

Definition at line 1274 of file dasd.c.

void dasd_kick_device

(

struct dasd_device *

device

)

Definition at line 560 of file dasd.c.

struct dasd_ccw_req* dasd_kmalloc_request ( int  magic, int  cplength, int  datasize, struct dasd_device *  device  )

read

Definition at line 1193 of file dasd.c.

int dasd_profile_on

(

struct dasd_profile *

profile

)

Definition at line 1179 of file dasd.c.

void dasd_reload_device

(

struct dasd_device *

device

)

Definition at line 579 of file dasd.c.

void dasd_restore_device

(

struct dasd_device *

device

)

Definition at line 599 of file dasd.c.

void dasd_schedule_block_bh

(

struct dasd_block *

block

)

Definition at line 2708 of file dasd.c.

void dasd_schedule_device_bh

(

struct dasd_device *

device

)

Definition at line 2005 of file dasd.c.

void dasd_set_target_state	(	struct dasd_device *	device,
		int	target
	)

Definition at line 609 of file dasd.c.

void dasd_sfree_request	(	struct dasd_ccw_req *	cqr,
		struct dasd_device *	device
	)

Definition at line 1291 of file dasd.c.

int dasd_sleep_on

(

struct dasd_ccw_req *

cqr

)

Definition at line 2213 of file dasd.c.

int dasd_sleep_on_immediatly

(

struct dasd_ccw_req *

cqr

)

Definition at line 2252 of file dasd.c.

int dasd_sleep_on_interruptible

(

struct dasd_ccw_req *

cqr

)

Definition at line 2222 of file dasd.c.

struct dasd_ccw_req* dasd_smalloc_request ( int  magic, int  cplength, int  datasize, struct dasd_device *  device  )

read

Definition at line 1230 of file dasd.c.

int dasd_start_IO

(

struct dasd_ccw_req *

cqr

)

Definition at line 1382 of file dasd.c.

int dasd_stats_generic_show	(	struct seq_file *	m,
		void *	v
	)

Definition at line 1162 of file dasd.c.

int dasd_term_IO

(

struct dasd_ccw_req *

cqr

)

Definition at line 1328 of file dasd.c.

void dasd_wakeup_cb	(	struct dasd_ccw_req *	cqr,
		void *	data
	)

Definition at line 2067 of file dasd.c.

EXPORT_SYMBOL

(

dasd_reload_device

)

EXPORT_SYMBOL

(

dasd_debug_area

)

EXPORT_SYMBOL

(

dasd_diag_discipline_pointer

)

EXPORT_SYMBOL

(

dasd_add_request_head

)

EXPORT_SYMBOL

(

dasd_add_request_tail

)

EXPORT_SYMBOL

(

dasd_cancel_req

)

EXPORT_SYMBOL

(

dasd_device_clear_timer

)

EXPORT_SYMBOL

(

dasd_block_clear_timer

)

EXPORT_SYMBOL

(

dasd_enable_device

)

EXPORT_SYMBOL

(

dasd_int_handler

)

EXPORT_SYMBOL

(

dasd_kfree_request

)

EXPORT_SYMBOL

(

dasd_kick_device

)

EXPORT_SYMBOL

(

dasd_kmalloc_request

)

EXPORT_SYMBOL

(

dasd_schedule_device_bh

)

EXPORT_SYMBOL

(

dasd_schedule_block_bh

)

EXPORT_SYMBOL

(

dasd_set_target_state

)

EXPORT_SYMBOL

(

dasd_device_set_timer

)

EXPORT_SYMBOL

(

dasd_block_set_timer

)

EXPORT_SYMBOL

(

dasd_sfree_request

)

EXPORT_SYMBOL

(

dasd_sleep_on

)

EXPORT_SYMBOL

(

dasd_sleep_on_immediatly

)

EXPORT_SYMBOL

(

dasd_sleep_on_interruptible

)

EXPORT_SYMBOL

(

dasd_smalloc_request

)

EXPORT_SYMBOL

(

dasd_start_IO

)

EXPORT_SYMBOL

(

dasd_term_IO

)

EXPORT_SYMBOL_GPL

(

dasd_generic_uc_handler

)

EXPORT_SYMBOL_GPL

(

dasd_device_set_stop_bits

)

EXPORT_SYMBOL_GPL

(

dasd_device_remove_stop_bits

)

EXPORT_SYMBOL_GPL

(

dasd_wakeup_cb

)

EXPORT_SYMBOL_GPL

(

dasd_device_is_ro

)

EXPORT_SYMBOL_GPL

(

dasd_generic_last_path_gone

)

EXPORT_SYMBOL_GPL

(

dasd_generic_path_operational

)

EXPORT_SYMBOL_GPL

(

dasd_generic_path_event

)

EXPORT_SYMBOL_GPL

(

dasd_generic_verify_path

)

EXPORT_SYMBOL_GPL

(

dasd_generic_pm_freeze

)

EXPORT_SYMBOL_GPL

(

dasd_generic_restore_device

)

EXPORT_SYMBOL_GPL

(

dasd_generic_read_dev_chars

)

EXPORT_SYMBOL_GPL

(

dasd_get_sense

)

EXPORT_SYMBOL_GPL

(

dasd_generic_shutdown

)

EXPORT_SYMBOL_GPL

(

dasd_generic_probe

)

EXPORT_SYMBOL_GPL

(

dasd_generic_remove

)

EXPORT_SYMBOL_GPL

(

dasd_generic_notify

)

EXPORT_SYMBOL_GPL

(

dasd_generic_set_online

)

EXPORT_SYMBOL_GPL

(

dasd_generic_set_offline

)

EXPORT_SYMBOL_GPL

(

dasd_generic_handle_state_change

)

EXPORT_SYMBOL_GPL

(

dasd_flush_device_queue

)

EXPORT_SYMBOL_GPL

(

dasd_alloc_block

)

EXPORT_SYMBOL_GPL

(

dasd_free_block

)

MODULE_AUTHOR

(

"Holger Smolinski <[email protected]>"

)

MODULE_DESCRIPTION	(	"Linux on S/390 DASD device	driver,
		""Copyright IBM Corp.2000"
	)

module_exit

(

dasd_exit

)

module_init

(

dasd_init

)

MODULE_LICENSE

(

"GPL"

)

MODULE_SUPPORTED_DEVICE

(

"dasd"

)

Variable Documentation

debug_info_t* dasd_debug_area

Definition at line 47 of file dasd.c.

struct block_device_operations dasd_device_operations

Initial value:

= {
    .owner      = THIS_MODULE,
    .open       = dasd_open,
    .release    = dasd_release,
    .ioctl      = dasd_ioctl,
    .compat_ioctl   = dasd_ioctl,
    .getgeo     = dasd_getgeo,
}

Definition at line 2911 of file dasd.c.

struct dasd_discipline* dasd_diag_discipline_pointer

Definition at line 49 of file dasd.c.

unsigned int dasd_global_profile_level = DASD_PROFILE_OFF

Definition at line 653 of file dasd.c.