1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright IBM Corp. 2007, 2010
4 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
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 desc;
48 struct channel_path_desc_fmt1 desc_fmt1;
49 /* Channel-measurement related stuff: */
52 struct cmg_chars cmg_chars;
55 /* Return channel_path struct for given chpid. */
56 static inline struct channel_path *chpid_to_chp(struct chp_id chpid)
58 return css_by_id(chpid.cssid)->chps[chpid.id];
61 int chp_get_status(struct chp_id chpid);
62 u8 chp_get_sch_opm(struct subchannel *sch);
63 int chp_is_registered(struct chp_id chpid);
64 struct channel_path_desc *chp_get_chp_desc(struct chp_id chpid);
65 void chp_remove_cmg_attr(struct channel_path *chp);
66 int chp_add_cmg_attr(struct channel_path *chp);
67 int chp_update_desc(struct channel_path *chp);
68 int chp_new(struct chp_id chpid);
69 void chp_cfg_schedule(struct chp_id chpid, int configure);
70 void chp_cfg_cancel_deconfigure(struct chp_id chpid);
71 int chp_info_get_status(struct chp_id chpid);
72 int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *);
73 #endif /* S390_CHP_H */