1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright IBM Corp. 2020
4 *
5 * Author(s): Alexandra Winter <wintera@linux.ibm.com>
6 *
7 * Interface for Channel Subsystem Call
8 */
9 #ifndef _ASM_S390_CHSC_H
10 #define _ASM_S390_CHSC_H
11
12 #include <uapi/asm/chsc.h>
13
14 /* struct from linux/notifier.h */
15 struct notifier_block;
16
17 /**
18 * Operation codes for CHSC PNSO:
19 * PNSO_OC_NET_BRIDGE_INFO - only addresses that are visible to a bridgeport
20 * PNSO_OC_NET_ADDR_INFO - all addresses
21 */
22 #define PNSO_OC_NET_BRIDGE_INFO 0
23 #define PNSO_OC_NET_ADDR_INFO 3
24 /**
25 * struct chsc_pnso_naid_l2 - network address information descriptor
26 * @nit: Network interface token
27 * @addr_lnid: network address and logical network id (VLAN ID)
28 */
29 struct chsc_pnso_naid_l2 {
30 u64 nit;
31 struct { u8 mac[6]; u16 lnid; } addr_lnid;
32 } __packed;
33
34 struct chsc_pnso_resume_token {
35 u64 t1;
36 u64 t2;
37 } __packed;
38
39 struct chsc_pnso_naihdr {
40 struct chsc_pnso_resume_token resume_token;
41 u32:32;
42 u32 instance;
43 u32:24;
44 u8 naids;
45 u32 reserved[3];
46 } __packed;
47
48 struct chsc_pnso_area {
49 struct chsc_header request;
50 u8:2;
51 u8 m:1;
52 u8:5;
53 u8:2;
54 u8 ssid:2;
55 u8 fmt:4;
56 u16 sch;
57 u8:8;
58 u8 cssid;
59 u16:16;
60 u8 oc;
61 u32:24;
62 struct chsc_pnso_resume_token resume_token;
63 u32 n:1;
64 u32:31;
65 u32 reserved[3];
66 struct chsc_header response;
67 u32:32;
68 struct chsc_pnso_naihdr naihdr;
69 struct chsc_pnso_naid_l2 entries[];
70 } __packed __aligned(PAGE_SIZE);
71
72 /*
73 * notifier interface - registered notifiers gets called on
74 * the following events:
75 * - ap config changed (CHSC_NOTIFY_AP_CFG)
76 */
77 enum chsc_notify_type {
78 CHSC_NOTIFY_AP_CFG = 3,
79 };
80
81 int chsc_notifier_register(struct notifier_block *nb);
82 int chsc_notifier_unregister(struct notifier_block *nb);
83
84 #endif /* _ASM_S390_CHSC_H */
85
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