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 #define NR_EXT_MEASUREMENT_ENTRIES 16
26 struct cmg_ext_entry {
27 u32 values[NR_EXT_MEASUREMENT_ENTRIES];
28 };
29
30 struct channel_path_desc_fmt1 {
31 u8 flags;
32 u8 lsn;
33 u8 desc;
34 u8 chpid;
35 u32:16;
36 u8 esc;
37 u8 chpp;
38 u32 unused[2];
39 u16 chid;
40 u32:16;
41 u16 mdc;
42 u16:13;
43 u8 r:1;
44 u8 s:1;
45 u8 f:1;
46 u32 zeros[2];
47 };
48
49 struct channel_path_desc_fmt3 {
50 struct channel_path_desc_fmt1 fmt1_desc;
51 u8 util_str[64];
52 };
53
54 struct channel_path;
55
56 struct css_chsc_char {
57 u64 res;
58 u64 : 20;
59 u32 secm : 1; /* bit 84 */
60 u32 : 1;
61 u32 scmc : 1; /* bit 86 */
62 u32 : 20;
63 u32 scssc : 1; /* bit 107 */
64 u32 scsscf : 1; /* bit 108 */
65 u32:7;
66 u32 pnso:1; /* bit 116 */
67 u32:11;
68 } __packed;
69
70 extern struct css_chsc_char css_chsc_characteristics;
71
72 struct chsc_ssd_info {
73 u8 path_mask;
74 u8 fla_valid_mask;
75 struct chp_id chpid[8];
76 u16 fla[8];
77 };
78
79 struct chsc_ssqd_area {
80 struct chsc_header request;
81 u16:10;
82 u8 ssid:2;
83 u8 fmt:4;
84 u16 first_sch;
85 u16:16;
86 u16 last_sch;
87 u32:32;
88 struct chsc_header response;
89 u32:32;
90 struct qdio_ssqd_desc qdio_ssqd;
91 } __packed __aligned(PAGE_SIZE);
92
93 struct chsc_scssc_area {
94 struct chsc_header request;
95 u16 operation_code;
96 u16:16;
97 u32:32;
98 u32:32;
99 dma64_t summary_indicator_addr;
100 dma64_t subchannel_indicator_addr;
101 u32 ks:4;
102 u32 kc:4;
103 u32:21;
104 u32 isc:3;
105 u32 word_with_d_bit;
106 u32:32;
107 struct subchannel_id schid;
108 u32 reserved[1004];
109 struct chsc_header response;
110 u32:32;
111 } __packed __aligned(PAGE_SIZE);
112
113 struct chsc_scpd {
114 struct chsc_header request;
115 u32:2;
116 u32 m:1;
117 u32 c:1;
118 u32 fmt:4;
119 u32 cssid:8;
120 u32:4;
121 u32 rfmt:4;
122 u32 first_chpid:8;
123 u32:24;
124 u32 last_chpid:8;
125 u32 zeroes1;
126 struct chsc_header response;
127 u32:32;
128 u8 data[];
129 } __packed __aligned(PAGE_SIZE);
130
131 struct chsc_sda_area {
132 struct chsc_header request;
133 u8 :4;
134 u8 format:4;
135 u8 :8;
136 u16 operation_code;
137 u32 :32;
138 u32 :32;
139 u32 operation_data_area[252];
140 struct chsc_header response;
141 u32 :4;
142 u32 format2:4;
143 u32 :24;
144 } __packed __aligned(PAGE_SIZE);
145
146 extern int chsc_get_ssd_info(struct subchannel_id schid,
147 struct chsc_ssd_info *ssd);
148 extern int chsc_determine_css_characteristics(void);
149 extern int chsc_init(void);
150 extern void chsc_init_cleanup(void);
151
152 int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code);
153 extern int chsc_enable_facility(int);
154 struct channel_subsystem;
155 extern int chsc_secm(struct channel_subsystem *, int);
156 int __chsc_do_secm(struct channel_subsystem *css, int enable);
157
158 int chsc_chp_vary(struct chp_id chpid, int on);
159 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
160 int c, int m, void *page);
161 int chsc_determine_fmt0_channel_path_desc(struct chp_id chpid,
162 struct channel_path_desc_fmt0 *desc);
163 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
164 struct channel_path_desc_fmt1 *desc);
165 int chsc_determine_fmt3_channel_path_desc(struct chp_id chpid,
166 struct channel_path_desc_fmt3 *desc);
167 void chsc_chp_online(struct chp_id chpid);
168 void chsc_chp_offline(struct chp_id chpid);
169 int chsc_get_channel_measurement_chars(struct channel_path *chp);
170 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
171 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
172 dma64_t summary_indicator_addr, dma64_t subchannel_indicator_addr,
173 u8 isc);
174 int chsc_sgib(u32 origin);
175 int chsc_error_from_response(int response);
176
177 int chsc_siosl(struct subchannel_id schid);
178
179 /* Functions and definitions to query storage-class memory. */
180 struct sale {
181 u64 sa;
182 u32 p:4;
183 u32 op_state:4;
184 u32 data_state:4;
185 u32 rank:4;
186 u32 r:1;
187 u32:7;
188 u32 rid:8;
189 u32:32;
190 } __packed;
191
192 struct chsc_scm_info {
193 struct chsc_header request;
194 u32:32;
195 u64 reqtok;
196 u32 reserved1[4];
197 struct chsc_header response;
198 u64:56;
199 u8 rq;
200 u32 mbc;
201 u64 msa;
202 u16 is;
203 u16 mmc;
204 u32 mci;
205 u64 nr_scm_ini;
206 u64 nr_scm_unini;
207 u32 reserved2[10];
208 u64 restok;
209 struct sale scmal[248];
210 } __packed __aligned(PAGE_SIZE);
211
212 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
213
214 int chsc_pnso(struct subchannel_id schid, struct chsc_pnso_area *pnso_area,
215 u8 oc, struct chsc_pnso_resume_token resume_token, int cnc);
216
217 int __init chsc_get_cssid_iid(int idx, u8 *cssid, u8 *iid);
218
219 #ifdef CONFIG_SCM_BUS
220 int scm_update_information(void);
221 int scm_process_availability_information(void);
222 #else /* CONFIG_SCM_BUS */
scm_update_information(void)223 static inline int scm_update_information(void) { return 0; }
scm_process_availability_information(void)224 static inline int scm_process_availability_information(void) { return 0; }
225 #endif /* CONFIG_SCM_BUS */
226
227
228 #endif
229