xref: /openbmc/linux/drivers/s390/cio/chsc.h (revision b34e08d5)
1 #ifndef S390_CHSC_H
2 #define S390_CHSC_H
3 
4 #include <linux/types.h>
5 #include <linux/device.h>
6 #include <asm/css_chars.h>
7 #include <asm/chpid.h>
8 #include <asm/chsc.h>
9 #include <asm/schid.h>
10 #include <asm/qdio.h>
11 
12 #define CHSC_SDA_OC_MSS   0x2
13 
14 #define NR_MEASUREMENT_CHARS 5
15 struct cmg_chars {
16 	u32 values[NR_MEASUREMENT_CHARS];
17 } __attribute__ ((packed));
18 
19 #define NR_MEASUREMENT_ENTRIES 8
20 struct cmg_entry {
21 	u32 values[NR_MEASUREMENT_ENTRIES];
22 } __attribute__ ((packed));
23 
24 struct channel_path_desc {
25 	u8 flags;
26 	u8 lsn;
27 	u8 desc;
28 	u8 chpid;
29 	u8 swla;
30 	u8 zeroes;
31 	u8 chla;
32 	u8 chpp;
33 } __attribute__ ((packed));
34 
35 struct channel_path_desc_fmt1 {
36 	u8 flags;
37 	u8 lsn;
38 	u8 desc;
39 	u8 chpid;
40 	u32:24;
41 	u8 chpp;
42 	u32 unused[2];
43 	u16 chid;
44 	u32:16;
45 	u16 mdc;
46 	u16:13;
47 	u8 r:1;
48 	u8 s:1;
49 	u8 f:1;
50 	u32 zeros[2];
51 } __attribute__ ((packed));
52 
53 struct channel_path;
54 
55 struct css_chsc_char {
56 	u64 res;
57 	u64 : 20;
58 	u32 secm : 1; /* bit 84 */
59 	u32 : 1;
60 	u32 scmc : 1; /* bit 86 */
61 	u32 : 20;
62 	u32 scssc : 1;  /* bit 107 */
63 	u32 scsscf : 1; /* bit 108 */
64 	u32:7;
65 	u32 pnso:1; /* bit 116 */
66 	u32:11;
67 }__attribute__((packed));
68 
69 extern struct css_chsc_char css_chsc_characteristics;
70 
71 struct chsc_ssd_info {
72 	u8 path_mask;
73 	u8 fla_valid_mask;
74 	struct chp_id chpid[8];
75 	u16 fla[8];
76 };
77 
78 struct chsc_ssqd_area {
79 	struct chsc_header request;
80 	u16:10;
81 	u8 ssid:2;
82 	u8 fmt:4;
83 	u16 first_sch;
84 	u16:16;
85 	u16 last_sch;
86 	u32:32;
87 	struct chsc_header response;
88 	u32:32;
89 	struct qdio_ssqd_desc qdio_ssqd;
90 } __packed;
91 
92 struct chsc_scssc_area {
93 	struct chsc_header request;
94 	u16 operation_code;
95 	u16:16;
96 	u32:32;
97 	u32:32;
98 	u64 summary_indicator_addr;
99 	u64 subchannel_indicator_addr;
100 	u32 ks:4;
101 	u32 kc:4;
102 	u32:21;
103 	u32 isc:3;
104 	u32 word_with_d_bit;
105 	u32:32;
106 	struct subchannel_id schid;
107 	u32 reserved[1004];
108 	struct chsc_header response;
109 	u32:32;
110 } __packed;
111 
112 struct chsc_scpd {
113 	struct chsc_header request;
114 	u32:2;
115 	u32 m:1;
116 	u32 c:1;
117 	u32 fmt:4;
118 	u32 cssid:8;
119 	u32:4;
120 	u32 rfmt:4;
121 	u32 first_chpid:8;
122 	u32:24;
123 	u32 last_chpid:8;
124 	u32 zeroes1;
125 	struct chsc_header response;
126 	u8 data[PAGE_SIZE - 20];
127 } __attribute__ ((packed));
128 
129 
130 extern int chsc_get_ssd_info(struct subchannel_id schid,
131 			     struct chsc_ssd_info *ssd);
132 extern int chsc_determine_css_characteristics(void);
133 extern int chsc_init(void);
134 extern void chsc_init_cleanup(void);
135 
136 extern int chsc_enable_facility(int);
137 struct channel_subsystem;
138 extern int chsc_secm(struct channel_subsystem *, int);
139 int __chsc_do_secm(struct channel_subsystem *css, int enable);
140 
141 int chsc_chp_vary(struct chp_id chpid, int on);
142 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
143 				     int c, int m, void *page);
144 int chsc_determine_base_channel_path_desc(struct chp_id chpid,
145 					  struct channel_path_desc *desc);
146 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
147 					  struct channel_path_desc_fmt1 *desc);
148 void chsc_chp_online(struct chp_id chpid);
149 void chsc_chp_offline(struct chp_id chpid);
150 int chsc_get_channel_measurement_chars(struct channel_path *chp);
151 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
152 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
153 	      u64 summary_indicator_addr, u64 subchannel_indicator_addr);
154 int chsc_error_from_response(int response);
155 
156 int chsc_siosl(struct subchannel_id schid);
157 
158 /* Functions and definitions to query storage-class memory. */
159 struct sale {
160 	u64 sa;
161 	u32 p:4;
162 	u32 op_state:4;
163 	u32 data_state:4;
164 	u32 rank:4;
165 	u32 r:1;
166 	u32:7;
167 	u32 rid:8;
168 	u32:32;
169 } __packed;
170 
171 struct chsc_scm_info {
172 	struct chsc_header request;
173 	u32:32;
174 	u64 reqtok;
175 	u32 reserved1[4];
176 	struct chsc_header response;
177 	u64:56;
178 	u8 rq;
179 	u32 mbc;
180 	u64 msa;
181 	u16 is;
182 	u16 mmc;
183 	u32 mci;
184 	u64 nr_scm_ini;
185 	u64 nr_scm_unini;
186 	u32 reserved2[10];
187 	u64 restok;
188 	struct sale scmal[248];
189 } __packed;
190 
191 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
192 
193 struct chsc_brinfo_resume_token {
194 	u64 t1;
195 	u64 t2;
196 } __packed;
197 
198 struct chsc_brinfo_naihdr {
199 	struct chsc_brinfo_resume_token resume_token;
200 	u32:32;
201 	u32 instance;
202 	u32:24;
203 	u8 naids;
204 	u32 reserved[3];
205 } __packed;
206 
207 struct chsc_pnso_area {
208 	struct chsc_header request;
209 	u8:2;
210 	u8 m:1;
211 	u8:5;
212 	u8:2;
213 	u8 ssid:2;
214 	u8 fmt:4;
215 	u16 sch;
216 	u8:8;
217 	u8 cssid;
218 	u16:16;
219 	u8 oc;
220 	u32:24;
221 	struct chsc_brinfo_resume_token resume_token;
222 	u32 n:1;
223 	u32:31;
224 	u32 reserved[3];
225 	struct chsc_header response;
226 	u32:32;
227 	struct chsc_brinfo_naihdr naihdr;
228 	union {
229 		struct qdio_brinfo_entry_l3_ipv6 l3_ipv6[0];
230 		struct qdio_brinfo_entry_l3_ipv4 l3_ipv4[0];
231 		struct qdio_brinfo_entry_l2	 l2[0];
232 	} entries;
233 } __packed;
234 
235 int chsc_pnso_brinfo(struct subchannel_id schid,
236 		struct chsc_pnso_area *brinfo_area,
237 		struct chsc_brinfo_resume_token resume_token,
238 		int cnc);
239 
240 #ifdef CONFIG_SCM_BUS
241 int scm_update_information(void);
242 int scm_process_availability_information(void);
243 #else /* CONFIG_SCM_BUS */
244 static inline int scm_update_information(void) { return 0; }
245 static inline int scm_process_availability_information(void) { return 0; }
246 #endif /* CONFIG_SCM_BUS */
247 
248 
249 #endif
250