arch/s390/include/asm/ccwdev.h

Source file repositories/reference/linux-study-clean/arch/s390/include/asm/ccwdev.h

File Facts

System
Linux kernel
Corpus path
arch/s390/include/asm/ccwdev.h
Extension
.h
Size
8532 bytes
Lines
239
Domain
Architecture Layer
Bucket
arch/s390
Inferred role
Architecture Layer: operation-table or driver-model contract
Status
pattern implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

struct device_driver driver;
	enum interruption_class int_class;
};

extern struct ccw_device *get_ccwdev_by_busid(struct ccw_driver *cdrv,
					      const char *bus_id);

/* devices drivers call these during module load and unload.
 * When a driver is registered, its probe method is called
 * when new devices for its type pop up */
extern int  ccw_driver_register   (struct ccw_driver *driver);
extern void ccw_driver_unregister (struct ccw_driver *driver);
extern int ccw_device_set_options_mask(struct ccw_device *, unsigned long);
extern int ccw_device_set_options(struct ccw_device *, unsigned long);
extern void ccw_device_clear_options(struct ccw_device *, unsigned long);
int ccw_device_is_pathgroup(struct ccw_device *cdev);
int ccw_device_is_multipath(struct ccw_device *cdev);

/* Allow for i/o completion notification after primary interrupt status. */
#define CCWDEV_EARLY_NOTIFICATION	0x0001
/* Report all interrupt conditions. */
#define CCWDEV_REPORT_ALL	 	0x0002
/* Try to perform path grouping. */
#define CCWDEV_DO_PATHGROUP             0x0004
/* Allow forced onlining of boxed devices. */
#define CCWDEV_ALLOW_FORCE              0x0008
/* Try to use multipath mode. */
#define CCWDEV_DO_MULTIPATH		0x0010

extern int ccw_device_start(struct ccw_device *, struct ccw1 *,
			    unsigned long, __u8, unsigned long);
extern int ccw_device_start_timeout(struct ccw_device *, struct ccw1 *,
				    unsigned long, __u8, unsigned long, int);
extern int ccw_device_start_key(struct ccw_device *, struct ccw1 *,
				unsigned long, __u8, __u8, unsigned long);
extern int ccw_device_start_timeout_key(struct ccw_device *, struct ccw1 *,
					unsigned long, __u8, __u8,
					unsigned long, int);


extern int ccw_device_resume(struct ccw_device *);
extern int ccw_device_halt(struct ccw_device *, unsigned long);
extern int ccw_device_clear(struct ccw_device *, unsigned long);
int ccw_device_tm_start_key(struct ccw_device *cdev, struct tcw *tcw,
			    unsigned long intparm, u8 lpm, u8 key);
int ccw_device_tm_start_key(struct ccw_device *, struct tcw *,
			    unsigned long, u8, u8);
int ccw_device_tm_start_timeout_key(struct ccw_device *, struct tcw *,
			    unsigned long, u8, u8, int);
int ccw_device_tm_start(struct ccw_device *, struct tcw *,
			    unsigned long, u8);
int ccw_device_tm_start_timeout(struct ccw_device *, struct tcw *,
			    unsigned long, u8, int);
int ccw_device_tm_intrg(struct ccw_device *cdev);

int ccw_device_get_mdc(struct ccw_device *cdev, u8 mask);

extern int ccw_device_set_online(struct ccw_device *cdev);
extern int ccw_device_set_offline(struct ccw_device *cdev);


extern struct ciw *ccw_device_get_ciw(struct ccw_device *, __u32 cmd);
extern __u8 ccw_device_get_path_mask(struct ccw_device *);
extern void ccw_device_get_id(struct ccw_device *, struct ccw_dev_id *);

#define get_ccwdev_lock(x) (x)->ccwlock

#define to_ccwdev(n) container_of(n, struct ccw_device, dev)
#define to_ccwdrv(n) container_of_const(n, struct ccw_driver, driver)

extern struct ccw_device *ccw_device_create_console(struct ccw_driver *);
extern void ccw_device_destroy_console(struct ccw_device *);
extern int ccw_device_enable_console(struct ccw_device *);
extern void ccw_device_wait_idle(struct ccw_device *);

extern void *ccw_device_dma_zalloc(struct ccw_device *cdev, size_t size,
				   dma32_t *dma_handle);
extern void ccw_device_dma_free(struct ccw_device *cdev,
				void *cpu_addr, size_t size);

int ccw_device_siosl(struct ccw_device *);

extern void ccw_device_get_schid(struct ccw_device *, struct subchannel_id *);

struct channel_path_desc_fmt0 *ccw_device_get_chp_desc(struct ccw_device *, int);
u8 *ccw_device_get_util_str(struct ccw_device *cdev, int chp_idx);
int ccw_device_pnso(struct ccw_device *cdev,
		    struct chsc_pnso_area *pnso_area, u8 oc,
		    struct chsc_pnso_resume_token resume_token, int cnc);
int ccw_device_get_cssid(struct ccw_device *cdev, u8 *cssid);

Annotation

Implementation Notes