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 | |
28 | struct chp_link { |
29 | struct chp_id chpid; |
30 | u32 fla_mask; |
31 | u16 fla; |
32 | }; |
33 | |
34 | static 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 | |
43 | struct 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. */ |
58 | static inline struct channel_path *chpid_to_chp(struct chp_id chpid) |
59 | { |
60 | return css_by_id(cssid: chpid.cssid)->chps[chpid.id]; |
61 | } |
62 | |
63 | int chp_get_status(struct chp_id chpid); |
64 | u8 chp_get_sch_opm(struct subchannel *sch); |
65 | int chp_is_registered(struct chp_id chpid); |
66 | struct channel_path_desc_fmt0 *chp_get_chp_desc(struct chp_id chpid); |
67 | void chp_remove_cmg_attr(struct channel_path *chp); |
68 | int chp_add_cmg_attr(struct channel_path *chp); |
69 | int chp_update_desc(struct channel_path *chp); |
70 | int chp_new(struct chp_id chpid); |
71 | void chp_cfg_schedule(struct chp_id chpid, int configure); |
72 | void chp_cfg_cancel_deconfigure(struct chp_id chpid); |
73 | int chp_info_get_status(struct chp_id chpid); |
74 | int chp_ssd_get_mask(struct chsc_ssd_info *, struct chp_link *); |
75 | #endif /* S390_CHP_H */ |
76 |