mirror of
https://kernel.googlesource.com/pub/scm/linux/kernel/git/stable/linux-stable.git
synced 2025-11-04 07:44:51 +10:00
fcc6dd4b7b
Add support for format 3 channel path descriptors and use them to gather utility strings. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
75 lines
1.9 KiB
C
75 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright IBM Corp. 2007, 2010
|
|
* Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
|
|
*/
|
|
|
|
#ifndef S390_CHP_H
|
|
#define S390_CHP_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/device.h>
|
|
#include <linux/mutex.h>
|
|
#include <asm/chpid.h>
|
|
#include "chsc.h"
|
|
#include "css.h"
|
|
|
|
#define CHP_STATUS_STANDBY 0
|
|
#define CHP_STATUS_CONFIGURED 1
|
|
#define CHP_STATUS_RESERVED 2
|
|
#define CHP_STATUS_NOT_RECOGNIZED 3
|
|
|
|
#define CHP_ONLINE 0
|
|
#define CHP_OFFLINE 1
|
|
#define CHP_VARY_ON 2
|
|
#define CHP_VARY_OFF 3
|
|
|
|
struct chp_link {
|
|
struct chp_id chpid;
|
|
u32 fla_mask;
|
|
u16 fla;
|
|
};
|
|
|
|
static inline int chp_test_bit(u8 *bitmap, int num)
|
|
{
|
|
int byte = num >> 3;
|
|
int mask = 128 >> (num & 7);
|
|
|
|
return (bitmap[byte] & mask) ? 1 : 0;
|
|
}
|
|
|
|
|
|
struct channel_path {
|
|
struct device dev;
|
|
struct chp_id chpid;
|
|
struct mutex lock; /* Serialize access to below members. */
|
|
int state;
|
|
struct channel_path_desc_fmt0 desc;
|
|
struct channel_path_desc_fmt1 desc_fmt1;
|
|
struct channel_path_desc_fmt3 desc_fmt3;
|
|
/* Channel-measurement related stuff: */
|
|
int cmg;
|
|
int shared;
|
|
struct cmg_chars cmg_chars;
|
|
};
|
|
|
|
/* Return channel_path struct for given chpid. */
|
|
static inline struct channel_path *chpid_to_chp(struct chp_id chpid)
|
|
{
|
|
return css_by_id(chpid.cssid)->chps[chpid.id];
|
|
}
|
|
|
|
int chp_get_status(struct chp_id chpid);
|
|
u8 chp_get_sch_opm(struct subchannel *sch);
|
|
int chp_is_registered(struct chp_id chpid);
|
|
struct channel_path_desc_fmt0 *chp_get_chp_desc(struct chp_id chpid);
|
|
void chp_remove_cmg_attr(struct channel_path *chp);
|
|
int chp_add_cmg_attr(struct channel_path *chp);
|
|
int chp_update_desc(struct channel_path *chp);
|
|
int chp_new(struct chp_id chpid);
|
|
void chp_cfg_schedule(struct chp_id chpid, int configure);
|
|
void chp_cfg_cancel_deconfigure(struct chp_id chpid);
|
|
int chp_info_get_status(struct chp_id chpid);
|
|
int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *);
|
|
#endif /* S390_CHP_H */
|