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Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef S390_CHSC_H
3#define S390_CHSC_H
4
5#include <linux/types.h>
6#include <linux/device.h>
7#include <asm/css_chars.h>
8#include <asm/chpid.h>
9#include <asm/chsc.h>
10#include <asm/schid.h>
11#include <asm/qdio.h>
12
13#define CHSC_SDA_OC_MSS 0x2
14
15#define NR_MEASUREMENT_CHARS 5
16struct cmg_chars {
17 u32 values[NR_MEASUREMENT_CHARS];
18};
19
20#define NR_MEASUREMENT_ENTRIES 8
21struct cmg_entry {
22 u32 values[NR_MEASUREMENT_ENTRIES];
23};
24
25struct channel_path_desc_fmt1 {
26 u8 flags;
27 u8 lsn;
28 u8 desc;
29 u8 chpid;
30 u32:24;
31 u8 chpp;
32 u32 unused[2];
33 u16 chid;
34 u32:16;
35 u16 mdc;
36 u16:13;
37 u8 r:1;
38 u8 s:1;
39 u8 f:1;
40 u32 zeros[2];
41};
42
43struct channel_path_desc_fmt3 {
44 struct channel_path_desc_fmt1 fmt1_desc;
45 u8 util_str[64];
46};
47
48struct channel_path;
49
50struct css_chsc_char {
51 u64 res;
52 u64 : 20;
53 u32 secm : 1; /* bit 84 */
54 u32 : 1;
55 u32 scmc : 1; /* bit 86 */
56 u32 : 20;
57 u32 scssc : 1; /* bit 107 */
58 u32 scsscf : 1; /* bit 108 */
59 u32:7;
60 u32 pnso:1; /* bit 116 */
61 u32:11;
62} __packed;
63
64extern struct css_chsc_char css_chsc_characteristics;
65
66struct chsc_ssd_info {
67 u8 path_mask;
68 u8 fla_valid_mask;
69 struct chp_id chpid[8];
70 u16 fla[8];
71};
72
73struct chsc_ssqd_area {
74 struct chsc_header request;
75 u16:10;
76 u8 ssid:2;
77 u8 fmt:4;
78 u16 first_sch;
79 u16:16;
80 u16 last_sch;
81 u32:32;
82 struct chsc_header response;
83 u32:32;
84 struct qdio_ssqd_desc qdio_ssqd;
85} __packed __aligned(PAGE_SIZE);
86
87struct chsc_scssc_area {
88 struct chsc_header request;
89 u16 operation_code;
90 u16:16;
91 u32:32;
92 u32:32;
93 u64 summary_indicator_addr;
94 u64 subchannel_indicator_addr;
95 u32 ks:4;
96 u32 kc:4;
97 u32:21;
98 u32 isc:3;
99 u32 word_with_d_bit;
100 u32:32;
101 struct subchannel_id schid;
102 u32 reserved[1004];
103 struct chsc_header response;
104 u32:32;
105} __packed __aligned(PAGE_SIZE);
106
107struct chsc_scpd {
108 struct chsc_header request;
109 u32:2;
110 u32 m:1;
111 u32 c:1;
112 u32 fmt:4;
113 u32 cssid:8;
114 u32:4;
115 u32 rfmt:4;
116 u32 first_chpid:8;
117 u32:24;
118 u32 last_chpid:8;
119 u32 zeroes1;
120 struct chsc_header response;
121 u32:32;
122 u8 data[0];
123} __packed __aligned(PAGE_SIZE);
124
125struct chsc_sda_area {
126 struct chsc_header request;
127 u8 :4;
128 u8 format:4;
129 u8 :8;
130 u16 operation_code;
131 u32 :32;
132 u32 :32;
133 u32 operation_data_area[252];
134 struct chsc_header response;
135 u32 :4;
136 u32 format2:4;
137 u32 :24;
138} __packed __aligned(PAGE_SIZE);
139
140extern int chsc_get_ssd_info(struct subchannel_id schid,
141 struct chsc_ssd_info *ssd);
142extern int chsc_determine_css_characteristics(void);
143extern int chsc_init(void);
144extern void chsc_init_cleanup(void);
145
146int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code);
147extern int chsc_enable_facility(int);
148struct channel_subsystem;
149extern int chsc_secm(struct channel_subsystem *, int);
150int __chsc_do_secm(struct channel_subsystem *css, int enable);
151
152int chsc_chp_vary(struct chp_id chpid, int on);
153int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
154 int c, int m, void *page);
155int chsc_determine_fmt0_channel_path_desc(struct chp_id chpid,
156 struct channel_path_desc_fmt0 *desc);
157int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
158 struct channel_path_desc_fmt1 *desc);
159int chsc_determine_fmt3_channel_path_desc(struct chp_id chpid,
160 struct channel_path_desc_fmt3 *desc);
161void chsc_chp_online(struct chp_id chpid);
162void chsc_chp_offline(struct chp_id chpid);
163int chsc_get_channel_measurement_chars(struct channel_path *chp);
164int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
165int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
166 u64 summary_indicator_addr, u64 subchannel_indicator_addr,
167 u8 isc);
168int chsc_sgib(u32 origin);
169int chsc_error_from_response(int response);
170
171int chsc_siosl(struct subchannel_id schid);
172
173/* Functions and definitions to query storage-class memory. */
174struct sale {
175 u64 sa;
176 u32 p:4;
177 u32 op_state:4;
178 u32 data_state:4;
179 u32 rank:4;
180 u32 r:1;
181 u32:7;
182 u32 rid:8;
183 u32:32;
184} __packed;
185
186struct chsc_scm_info {
187 struct chsc_header request;
188 u32:32;
189 u64 reqtok;
190 u32 reserved1[4];
191 struct chsc_header response;
192 u64:56;
193 u8 rq;
194 u32 mbc;
195 u64 msa;
196 u16 is;
197 u16 mmc;
198 u32 mci;
199 u64 nr_scm_ini;
200 u64 nr_scm_unini;
201 u32 reserved2[10];
202 u64 restok;
203 struct sale scmal[248];
204} __packed __aligned(PAGE_SIZE);
205
206int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
207
208int chsc_pnso(struct subchannel_id schid, struct chsc_pnso_area *pnso_area,
209 u8 oc, struct chsc_pnso_resume_token resume_token, int cnc);
210
211int __init chsc_get_cssid_iid(int idx, u8 *cssid, u8 *iid);
212
213#ifdef CONFIG_SCM_BUS
214int scm_update_information(void);
215int scm_process_availability_information(void);
216#else /* CONFIG_SCM_BUS */
217static inline int scm_update_information(void) { return 0; }
218static inline int scm_process_availability_information(void) { return 0; }
219#endif /* CONFIG_SCM_BUS */
220
221
222#endif