mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-21 17:00:01 +00:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
193 lines
6.6 KiB
C
193 lines
6.6 KiB
C
/*
|
|
* include/asm-s390/ccwdev.h
|
|
* include/asm-s390x/ccwdev.h
|
|
*
|
|
* Copyright (C) 2002 IBM Deutschland Entwicklung GmbH, IBM Corporation
|
|
* Author(s): Arnd Bergmann <arndb@de.ibm.com>
|
|
*
|
|
* Interface for CCW device drivers
|
|
*/
|
|
#ifndef _S390_CCWDEV_H_
|
|
#define _S390_CCWDEV_H_
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/mod_devicetable.h>
|
|
|
|
/* structs from asm/cio.h */
|
|
struct irb;
|
|
struct ccw1;
|
|
|
|
/* simplified initializers for struct ccw_device:
|
|
* CCW_DEVICE and CCW_DEVICE_DEVTYPE initialize one
|
|
* entry in your MODULE_DEVICE_TABLE and set the match_flag correctly */
|
|
#define CCW_DEVICE(cu, cum) \
|
|
.cu_type=(cu), .cu_model=(cum), \
|
|
.match_flags=(CCW_DEVICE_ID_MATCH_CU_TYPE \
|
|
| (cum ? CCW_DEVICE_ID_MATCH_CU_MODEL : 0))
|
|
|
|
#define CCW_DEVICE_DEVTYPE(cu, cum, dev, devm) \
|
|
.cu_type=(cu), .cu_model=(cum), .dev_type=(dev), .dev_model=(devm),\
|
|
.match_flags=CCW_DEVICE_ID_MATCH_CU_TYPE \
|
|
| ((cum) ? CCW_DEVICE_ID_MATCH_CU_MODEL : 0) \
|
|
| CCW_DEVICE_ID_MATCH_DEVICE_TYPE \
|
|
| ((devm) ? CCW_DEVICE_ID_MATCH_DEVICE_MODEL : 0)
|
|
|
|
/* scan through an array of device ids and return the first
|
|
* entry that matches the device.
|
|
*
|
|
* the array must end with an entry containing zero match_flags
|
|
*/
|
|
static inline const struct ccw_device_id *
|
|
ccw_device_id_match(const struct ccw_device_id *array,
|
|
const struct ccw_device_id *match)
|
|
{
|
|
const struct ccw_device_id *id = array;
|
|
|
|
for (id = array; id->match_flags; id++) {
|
|
if ((id->match_flags & CCW_DEVICE_ID_MATCH_CU_TYPE)
|
|
&& (id->cu_type != match->cu_type))
|
|
continue;
|
|
|
|
if ((id->match_flags & CCW_DEVICE_ID_MATCH_CU_MODEL)
|
|
&& (id->cu_model != match->cu_model))
|
|
continue;
|
|
|
|
if ((id->match_flags & CCW_DEVICE_ID_MATCH_DEVICE_TYPE)
|
|
&& (id->dev_type != match->dev_type))
|
|
continue;
|
|
|
|
if ((id->match_flags & CCW_DEVICE_ID_MATCH_DEVICE_MODEL)
|
|
&& (id->dev_model != match->dev_model))
|
|
continue;
|
|
|
|
return id;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* The struct ccw device is our replacement for the globally accessible
|
|
* ioinfo array. ioinfo will mutate into a subchannel device later.
|
|
*
|
|
* Reference: Documentation/s390/driver-model.txt */
|
|
struct ccw_device {
|
|
spinlock_t *ccwlock;
|
|
struct ccw_device_private *private; /* cio private information */
|
|
struct ccw_device_id id; /* id of this device, driver_info is
|
|
set by ccw_find_driver */
|
|
struct ccw_driver *drv; /* */
|
|
struct device dev; /* */
|
|
int online;
|
|
/* This is sick, but a driver can have different interrupt handlers
|
|
for different ccw_devices (multi-subchannel drivers)... */
|
|
void (*handler) (struct ccw_device *, unsigned long, struct irb *);
|
|
};
|
|
|
|
|
|
/* Each ccw driver registers with the ccw root bus */
|
|
struct ccw_driver {
|
|
struct module *owner; /* for automatic MOD_INC_USE_COUNT */
|
|
struct ccw_device_id *ids; /* probe driver with these devs */
|
|
int (*probe) (struct ccw_device *); /* ask driver to probe dev */
|
|
void (*remove) (struct ccw_device *);
|
|
/* device is no longer available */
|
|
int (*set_online) (struct ccw_device *);
|
|
int (*set_offline) (struct ccw_device *);
|
|
int (*notify) (struct ccw_device *, int);
|
|
struct device_driver driver; /* higher level structure, don't init
|
|
this from your driver */
|
|
char *name;
|
|
};
|
|
|
|
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);
|
|
|
|
struct ccw1;
|
|
|
|
extern int ccw_device_set_options(struct ccw_device *, unsigned long);
|
|
|
|
/* 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
|
|
|
|
/*
|
|
* ccw_device_start()
|
|
*
|
|
* Start a S/390 channel program. When the interrupt arrives, the
|
|
* IRQ handler is called, either immediately, delayed (dev-end missing,
|
|
* or sense required) or never (no IRQ handler registered).
|
|
* Depending on the action taken, ccw_device_start() returns:
|
|
* 0 - Success
|
|
* -EBUSY - Device busy, or status pending
|
|
* -ENODEV - Device not operational
|
|
* -EINVAL - Device invalid for operation
|
|
*/
|
|
extern int ccw_device_start(struct ccw_device *, struct ccw1 *,
|
|
unsigned long, __u8, unsigned long);
|
|
/*
|
|
* ccw_device_start_timeout()
|
|
*
|
|
* This function notifies the device driver if the channel program has not
|
|
* completed during the specified time. If a timeout occurs, the channel
|
|
* program is terminated via xsch(), hsch() or csch().
|
|
*/
|
|
extern int ccw_device_start_timeout(struct ccw_device *, struct ccw1 *,
|
|
unsigned long, __u8, unsigned long, int);
|
|
/*
|
|
* ccw_device_start_key()
|
|
* ccw_device_start_key_timeout()
|
|
*
|
|
* Same as ccw_device_start() and ccw_device_start_timeout(), except a
|
|
* storage key != default key can be provided for the I/O.
|
|
*/
|
|
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);
|
|
|
|
extern int read_dev_chars(struct ccw_device *cdev, void **buffer, int length);
|
|
extern int read_conf_data(struct ccw_device *cdev, void **buffer, int *length);
|
|
extern int read_conf_data_lpm(struct ccw_device *cdev, void **buffer,
|
|
int *length, __u8 lpm);
|
|
|
|
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 *);
|
|
|
|
#define get_ccwdev_lock(x) (x)->ccwlock
|
|
|
|
#define to_ccwdev(n) container_of(n, struct ccw_device, dev)
|
|
#define to_ccwdrv(n) container_of(n, struct ccw_driver, driver)
|
|
|
|
extern struct ccw_device *ccw_device_probe_console(void);
|
|
|
|
// FIXME: these have to go
|
|
extern int _ccw_device_get_device_number(struct ccw_device *);
|
|
extern int _ccw_device_get_subchannel_number(struct ccw_device *);
|
|
|
|
extern struct device *s390_root_dev_register(const char *);
|
|
extern void s390_root_dev_unregister(struct device *);
|
|
|
|
extern void *ccw_device_get_chp_desc(struct ccw_device *, int);
|
|
#endif /* _S390_CCWDEV_H_ */
|