1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright IBM Corp. 2007, 2010
10 #include <linux/types.h>
11 #include <linux/device.h>
12 #include <linux/mutex.h>
13 #include <asm/chpid.h>
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
25 #define CHP_VARY_OFF 3
33 static inline int chp_test_bit(u8 *bitmap, int num)
36 int mask = 128 >> (num & 7);
38 return (bitmap[byte] & mask) ? 1 : 0;
45 struct mutex lock; /* Serialize access to below members. */
47 struct channel_path_desc_fmt0 desc;
48 struct channel_path_desc_fmt1 desc_fmt1;
49 struct channel_path_desc_fmt3 desc_fmt3;
50 /* Channel-measurement related stuff: */
53 struct cmg_chars cmg_chars;
56 /* Return channel_path struct for given chpid. */
57 static inline struct channel_path *chpid_to_chp(struct chp_id chpid)
59 return css_by_id(chpid.cssid)->chps[chpid.id];
62 int chp_get_status(struct chp_id chpid);
63 u8 chp_get_sch_opm(struct subchannel *sch);
64 int chp_is_registered(struct chp_id chpid);
65 struct channel_path_desc_fmt0 *chp_get_chp_desc(struct chp_id chpid);
66 void chp_remove_cmg_attr(struct channel_path *chp);
67 int chp_add_cmg_attr(struct channel_path *chp);
68 int chp_update_desc(struct channel_path *chp);
69 int chp_new(struct chp_id chpid);
70 void chp_cfg_schedule(struct chp_id chpid, int configure);
71 void chp_cfg_cancel_deconfigure(struct chp_id chpid);
72 int chp_info_get_status(struct chp_id chpid);
73 int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *);
74 #endif /* S390_CHP_H */