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
15struct cmg_chars {
16 u32 values[NR_MEASUREMENT_CHARS];
17} __attribute__ ((packed));
18
19#define NR_MEASUREMENT_ENTRIES 8
20struct cmg_entry {
21 u32 values[NR_MEASUREMENT_ENTRIES];
22} __attribute__ ((packed));
23
24struct channel_path_desc_fmt1 {
25 u8 flags;
26 u8 lsn;
27 u8 desc;
28 u8 chpid;
29 u32:24;
30 u8 chpp;
31 u32 unused[2];
32 u16 chid;
33 u32:16;
34 u16 mdc;
35 u16:13;
36 u8 r:1;
37 u8 s:1;
38 u8 f:1;
39 u32 zeros[2];
40} __attribute__ ((packed));
41
42struct channel_path;
43
44struct css_chsc_char {
45 u64 res;
46 u64 : 20;
47 u32 secm : 1;
48 u32 : 1;
49 u32 scmc : 1;
50 u32 : 20;
51 u32 scssc : 1;
52 u32 scsscf : 1;
53 u32:7;
54 u32 pnso:1;
55 u32:11;
56}__attribute__((packed));
57
58extern struct css_chsc_char css_chsc_characteristics;
59
60struct chsc_ssd_info {
61 u8 path_mask;
62 u8 fla_valid_mask;
63 struct chp_id chpid[8];
64 u16 fla[8];
65};
66
67struct chsc_ssqd_area {
68 struct chsc_header request;
69 u16:10;
70 u8 ssid:2;
71 u8 fmt:4;
72 u16 first_sch;
73 u16:16;
74 u16 last_sch;
75 u32:32;
76 struct chsc_header response;
77 u32:32;
78 struct qdio_ssqd_desc qdio_ssqd;
79} __packed;
80
81struct chsc_scssc_area {
82 struct chsc_header request;
83 u16 operation_code;
84 u16:16;
85 u32:32;
86 u32:32;
87 u64 summary_indicator_addr;
88 u64 subchannel_indicator_addr;
89 u32 ks:4;
90 u32 kc:4;
91 u32:21;
92 u32 isc:3;
93 u32 word_with_d_bit;
94 u32:32;
95 struct subchannel_id schid;
96 u32 reserved[1004];
97 struct chsc_header response;
98 u32:32;
99} __packed;
100
101struct chsc_scpd {
102 struct chsc_header request;
103 u32:2;
104 u32 m:1;
105 u32 c:1;
106 u32 fmt:4;
107 u32 cssid:8;
108 u32:4;
109 u32 rfmt:4;
110 u32 first_chpid:8;
111 u32:24;
112 u32 last_chpid:8;
113 u32 zeroes1;
114 struct chsc_header response;
115 u8 data[PAGE_SIZE - 20];
116} __attribute__ ((packed));
117
118struct chsc_sda_area {
119 struct chsc_header request;
120 u8 :4;
121 u8 format:4;
122 u8 :8;
123 u16 operation_code;
124 u32 :32;
125 u32 :32;
126 u32 operation_data_area[252];
127 struct chsc_header response;
128 u32 :4;
129 u32 format2:4;
130 u32 :24;
131} __packed __aligned(PAGE_SIZE);
132
133extern int chsc_get_ssd_info(struct subchannel_id schid,
134 struct chsc_ssd_info *ssd);
135extern int chsc_determine_css_characteristics(void);
136extern int chsc_init(void);
137extern void chsc_init_cleanup(void);
138
139int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code);
140extern int chsc_enable_facility(int);
141struct channel_subsystem;
142extern int chsc_secm(struct channel_subsystem *, int);
143int __chsc_do_secm(struct channel_subsystem *css, int enable);
144
145int chsc_chp_vary(struct chp_id chpid, int on);
146int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
147 int c, int m, void *page);
148int chsc_determine_base_channel_path_desc(struct chp_id chpid,
149 struct channel_path_desc *desc);
150int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
151 struct channel_path_desc_fmt1 *desc);
152void chsc_chp_online(struct chp_id chpid);
153void chsc_chp_offline(struct chp_id chpid);
154int chsc_get_channel_measurement_chars(struct channel_path *chp);
155int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
156int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
157 u64 summary_indicator_addr, u64 subchannel_indicator_addr);
158int chsc_error_from_response(int response);
159
160int chsc_siosl(struct subchannel_id schid);
161
162
163struct sale {
164 u64 sa;
165 u32 p:4;
166 u32 op_state:4;
167 u32 data_state:4;
168 u32 rank:4;
169 u32 r:1;
170 u32:7;
171 u32 rid:8;
172 u32:32;
173} __packed;
174
175struct chsc_scm_info {
176 struct chsc_header request;
177 u32:32;
178 u64 reqtok;
179 u32 reserved1[4];
180 struct chsc_header response;
181 u64:56;
182 u8 rq;
183 u32 mbc;
184 u64 msa;
185 u16 is;
186 u16 mmc;
187 u32 mci;
188 u64 nr_scm_ini;
189 u64 nr_scm_unini;
190 u32 reserved2[10];
191 u64 restok;
192 struct sale scmal[248];
193} __packed;
194
195int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
196
197struct chsc_brinfo_resume_token {
198 u64 t1;
199 u64 t2;
200} __packed;
201
202struct chsc_brinfo_naihdr {
203 struct chsc_brinfo_resume_token resume_token;
204 u32:32;
205 u32 instance;
206 u32:24;
207 u8 naids;
208 u32 reserved[3];
209} __packed;
210
211struct chsc_pnso_area {
212 struct chsc_header request;
213 u8:2;
214 u8 m:1;
215 u8:5;
216 u8:2;
217 u8 ssid:2;
218 u8 fmt:4;
219 u16 sch;
220 u8:8;
221 u8 cssid;
222 u16:16;
223 u8 oc;
224 u32:24;
225 struct chsc_brinfo_resume_token resume_token;
226 u32 n:1;
227 u32:31;
228 u32 reserved[3];
229 struct chsc_header response;
230 u32:32;
231 struct chsc_brinfo_naihdr naihdr;
232 union {
233 struct qdio_brinfo_entry_l3_ipv6 l3_ipv6[0];
234 struct qdio_brinfo_entry_l3_ipv4 l3_ipv4[0];
235 struct qdio_brinfo_entry_l2 l2[0];
236 } entries;
237} __packed;
238
239int chsc_pnso_brinfo(struct subchannel_id schid,
240 struct chsc_pnso_area *brinfo_area,
241 struct chsc_brinfo_resume_token resume_token,
242 int cnc);
243
244#ifdef CONFIG_SCM_BUS
245int scm_update_information(void);
246int scm_process_availability_information(void);
247#else
248static inline int scm_update_information(void) { return 0; }
249static inline int scm_process_availability_information(void) { return 0; }
250#endif
251
252
253#endif
254
