1/*
 2 *  drivers/s390/cio/chp.h
 3 *
 4 *    Copyright IBM Corp. 2007,2010
 5 *    Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
 6 */
 7
 8#ifndef S390_CHP_H
 9#define S390_CHP_H S390_CHP_H
10
11#include <linux/types.h>
12#include <linux/device.h>
13#include <linux/mutex.h>
14#include <asm/chpid.h>
15#include "chsc.h"
16#include "css.h"
17
18#define CHP_STATUS_STANDBY		0
19#define CHP_STATUS_CONFIGURED		1
20#define CHP_STATUS_RESERVED		2
21#define CHP_STATUS_NOT_RECOGNIZED	3
22
23#define CHP_ONLINE 0
24#define CHP_OFFLINE 1
25#define CHP_VARY_ON 2
26#define CHP_VARY_OFF 3
 
27
28struct chp_link {
29	struct chp_id chpid;
30	u32 fla_mask;
31	u16 fla;
32};
33
34static inline int chp_test_bit(u8 *bitmap, int num)
35{
36	int byte = num >> 3;
37	int mask = 128 >> (num & 7);
38
39	return (bitmap[byte] & mask) ? 1 : 0;
40}
41
42
43struct channel_path {
44	struct device dev;
45	struct chp_id chpid;
46	struct mutex lock; /* Serialize access to below members. */
47	int state;
48	struct channel_path_desc desc;
 
 
49	/* Channel-measurement related stuff: */
50	int cmg;
51	int shared;
52	void *cmg_chars;
53};
54
55/* Return channel_path struct for given chpid. */
56static inline struct channel_path *chpid_to_chp(struct chp_id chpid)
57{
58	return channel_subsystems[chpid.cssid]->chps[chpid.id];
59}
60
61int chp_get_status(struct chp_id chpid);
62u8 chp_get_sch_opm(struct subchannel *sch);
63int chp_is_registered(struct chp_id chpid);
64void *chp_get_chp_desc(struct chp_id chpid);
65void chp_remove_cmg_attr(struct channel_path *chp);
66int chp_add_cmg_attr(struct channel_path *chp);
 
67int chp_new(struct chp_id chpid);
68void chp_cfg_schedule(struct chp_id chpid, int configure);
69void chp_cfg_cancel_deconfigure(struct chp_id chpid);
70int chp_info_get_status(struct chp_id chpid);
71int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *);
72#endif /* S390_CHP_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 *    Copyright IBM Corp. 2007, 2010
 
 
 4 *    Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
 5 */
 6
 7#ifndef S390_CHP_H
 8#define S390_CHP_H
 9
10#include <linux/types.h>
11#include <linux/device.h>
12#include <linux/mutex.h>
13#include <asm/chpid.h>
14#include "chsc.h"
15#include "css.h"
16
17#define CHP_STATUS_STANDBY		0
18#define CHP_STATUS_CONFIGURED		1
19#define CHP_STATUS_RESERVED		2
20#define CHP_STATUS_NOT_RECOGNIZED	3
21
22#define CHP_ONLINE 0
23#define CHP_OFFLINE 1
24#define CHP_VARY_ON 2
25#define CHP_VARY_OFF 3
26#define CHP_FCES_EVENT 4
27
28struct chp_link {
29	struct chp_id chpid;
30	u32 fla_mask;
31	u16 fla;
32};
33
34static inline int chp_test_bit(u8 *bitmap, int num)
35{
36	int byte = num >> 3;
37	int mask = 128 >> (num & 7);
38
39	return (bitmap[byte] & mask) ? 1 : 0;
40}
41
42
43struct channel_path {
44	struct device dev;
45	struct chp_id chpid;
46	struct mutex lock; /* Serialize access to below members. */
47	int state;
48	struct channel_path_desc_fmt0 desc;
49	struct channel_path_desc_fmt1 desc_fmt1;
50	struct channel_path_desc_fmt3 desc_fmt3;
51	/* Channel-measurement related stuff: */
52	int cmg;
53	int shared;
54	struct cmg_chars cmg_chars;
55};
56
57/* Return channel_path struct for given chpid. */
58static inline struct channel_path *chpid_to_chp(struct chp_id chpid)
59{
60	return css_by_id(chpid.cssid)->chps[chpid.id];
61}
62
63int chp_get_status(struct chp_id chpid);
64u8 chp_get_sch_opm(struct subchannel *sch);
65int chp_is_registered(struct chp_id chpid);
66struct channel_path_desc_fmt0 *chp_get_chp_desc(struct chp_id chpid);
67void chp_remove_cmg_attr(struct channel_path *chp);
68int chp_add_cmg_attr(struct channel_path *chp);
69int chp_update_desc(struct channel_path *chp);
70int chp_new(struct chp_id chpid);
71void chp_cfg_schedule(struct chp_id chpid, int configure);
72void chp_cfg_cancel_deconfigure(struct chp_id chpid);
73int chp_info_get_status(struct chp_id chpid);
74int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *);
75#endif /* S390_CHP_H */