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
16 struct cmg_chars {
17 u32 values[NR_MEASUREMENT_CHARS];
18 };
19
20 #define NR_MEASUREMENT_ENTRIES 8
21 struct cmg_entry {
22 u32 values[NR_MEASUREMENT_ENTRIES];
23 };
24
25 struct channel_path_desc_fmt1 {
26 u8 flags;
27 u8 lsn;
28 u8 desc;
29 u8 chpid;
30 u32:16;
31 u8 esc;
32 u8 chpp;
33 u32 unused[2];
34 u16 chid;
35 u32:16;
36 u16 mdc;
37 u16:13;
38 u8 r:1;
39 u8 s:1;
40 u8 f:1;
41 u32 zeros[2];
42 };
43
44 struct channel_path_desc_fmt3 {
45 struct channel_path_desc_fmt1 fmt1_desc;
46 u8 util_str[64];
47 };
48
49 struct channel_path;
50
51 struct css_chsc_char {
52 u64 res;
53 u64 : 20;
54 u32 secm : 1; /* bit 84 */
55 u32 : 1;
56 u32 scmc : 1; /* bit 86 */
57 u32 : 20;
58 u32 scssc : 1; /* bit 107 */
59 u32 scsscf : 1; /* bit 108 */
60 u32:7;
61 u32 pnso:1; /* bit 116 */
62 u32:11;
63 } __packed;
64
65 extern struct css_chsc_char css_chsc_characteristics;
66
67 struct chsc_ssd_info {
68 u8 path_mask;
69 u8 fla_valid_mask;
70 struct chp_id chpid[8];
71 u16 fla[8];
72 };
73
74 struct chsc_ssqd_area {
75 struct chsc_header request;
76 u16:10;
77 u8 ssid:2;
78 u8 fmt:4;
79 u16 first_sch;
80 u16:16;
81 u16 last_sch;
82 u32:32;
83 struct chsc_header response;
84 u32:32;
85 struct qdio_ssqd_desc qdio_ssqd;
86 } __packed __aligned(PAGE_SIZE);
87
88 struct chsc_scssc_area {
89 struct chsc_header request;
90 u16 operation_code;
91 u16:16;
92 u32:32;
93 u32:32;
94 u64 summary_indicator_addr;
95 u64 subchannel_indicator_addr;
96 u32 ks:4;
97 u32 kc:4;
98 u32:21;
99 u32 isc:3;
100 u32 word_with_d_bit;
101 u32:32;
102 struct subchannel_id schid;
103 u32 reserved[1004];
104 struct chsc_header response;
105 u32:32;
106 } __packed __aligned(PAGE_SIZE);
107
108 struct chsc_scpd {
109 struct chsc_header request;
110 u32:2;
111 u32 m:1;
112 u32 c:1;
113 u32 fmt:4;
114 u32 cssid:8;
115 u32:4;
116 u32 rfmt:4;
117 u32 first_chpid:8;
118 u32:24;
119 u32 last_chpid:8;
120 u32 zeroes1;
121 struct chsc_header response;
122 u32:32;
123 u8 data[0];
124 } __packed __aligned(PAGE_SIZE);
125
126 struct chsc_sda_area {
127 struct chsc_header request;
128 u8 :4;
129 u8 format:4;
130 u8 :8;
131 u16 operation_code;
132 u32 :32;
133 u32 :32;
134 u32 operation_data_area[252];
135 struct chsc_header response;
136 u32 :4;
137 u32 format2:4;
138 u32 :24;
139 } __packed __aligned(PAGE_SIZE);
140
141 extern int chsc_get_ssd_info(struct subchannel_id schid,
142 struct chsc_ssd_info *ssd);
143 extern int chsc_determine_css_characteristics(void);
144 extern int chsc_init(void);
145 extern void chsc_init_cleanup(void);
146
147 int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code);
148 extern int chsc_enable_facility(int);
149 struct channel_subsystem;
150 extern int chsc_secm(struct channel_subsystem *, int);
151 int __chsc_do_secm(struct channel_subsystem *css, int enable);
152
153 int chsc_chp_vary(struct chp_id chpid, int on);
154 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
155 int c, int m, void *page);
156 int chsc_determine_fmt0_channel_path_desc(struct chp_id chpid,
157 struct channel_path_desc_fmt0 *desc);
158 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
159 struct channel_path_desc_fmt1 *desc);
160 int chsc_determine_fmt3_channel_path_desc(struct chp_id chpid,
161 struct channel_path_desc_fmt3 *desc);
162 void chsc_chp_online(struct chp_id chpid);
163 void chsc_chp_offline(struct chp_id chpid);
164 int chsc_get_channel_measurement_chars(struct channel_path *chp);
165 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
166 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
167 u64 summary_indicator_addr, u64 subchannel_indicator_addr,
168 u8 isc);
169 int chsc_sgib(u32 origin);
170 int chsc_error_from_response(int response);
171
172 int chsc_siosl(struct subchannel_id schid);
173
174 /* Functions and definitions to query storage-class memory. */
175 struct sale {
176 u64 sa;
177 u32 p:4;
178 u32 op_state:4;
179 u32 data_state:4;
180 u32 rank:4;
181 u32 r:1;
182 u32:7;
183 u32 rid:8;
184 u32:32;
185 } __packed;
186
187 struct chsc_scm_info {
188 struct chsc_header request;
189 u32:32;
190 u64 reqtok;
191 u32 reserved1[4];
192 struct chsc_header response;
193 u64:56;
194 u8 rq;
195 u32 mbc;
196 u64 msa;
197 u16 is;
198 u16 mmc;
199 u32 mci;
200 u64 nr_scm_ini;
201 u64 nr_scm_unini;
202 u32 reserved2[10];
203 u64 restok;
204 struct sale scmal[248];
205 } __packed __aligned(PAGE_SIZE);
206
207 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
208
209 int chsc_pnso(struct subchannel_id schid, struct chsc_pnso_area *pnso_area,
210 u8 oc, struct chsc_pnso_resume_token resume_token, int cnc);
211
212 int __init chsc_get_cssid_iid(int idx, u8 *cssid, u8 *iid);
213
214 #ifdef CONFIG_SCM_BUS
215 int scm_update_information(void);
216 int scm_process_availability_information(void);
217 #else /* CONFIG_SCM_BUS */
scm_update_information(void)218 static inline int scm_update_information(void) { return 0; }
scm_process_availability_information(void)219 static inline int scm_process_availability_information(void) { return 0; }
220 #endif /* CONFIG_SCM_BUS */
221
222
223 #endif
224