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; /* bit 84 */
48	u32 : 1;
49	u32 scmc : 1; /* bit 86 */
50	u32 : 20;
51	u32 scssc : 1;  /* bit 107 */
52	u32 scsscf : 1; /* bit 108 */
53	u32:7;
54	u32 pnso:1; /* bit 116 */
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
118
119extern int chsc_get_ssd_info(struct subchannel_id schid,
120			     struct chsc_ssd_info *ssd);
121extern int chsc_determine_css_characteristics(void);
122extern int chsc_init(void);
123extern void chsc_init_cleanup(void);
124
125extern int chsc_enable_facility(int);
126struct channel_subsystem;
127extern int chsc_secm(struct channel_subsystem *, int);
128int __chsc_do_secm(struct channel_subsystem *css, int enable);
129
130int chsc_chp_vary(struct chp_id chpid, int on);
131int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
132				     int c, int m, void *page);
133int chsc_determine_base_channel_path_desc(struct chp_id chpid,
134					  struct channel_path_desc *desc);
135int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
136					  struct channel_path_desc_fmt1 *desc);
137void chsc_chp_online(struct chp_id chpid);
138void chsc_chp_offline(struct chp_id chpid);
139int chsc_get_channel_measurement_chars(struct channel_path *chp);
140int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
141int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
142	      u64 summary_indicator_addr, u64 subchannel_indicator_addr);
143int chsc_error_from_response(int response);
144
145int chsc_siosl(struct subchannel_id schid);
146
147/* Functions and definitions to query storage-class memory. */
148struct sale {
149	u64 sa;
150	u32 p:4;
151	u32 op_state:4;
152	u32 data_state:4;
153	u32 rank:4;
154	u32 r:1;
155	u32:7;
156	u32 rid:8;
157	u32:32;
158} __packed;
159
160struct chsc_scm_info {
161	struct chsc_header request;
162	u32:32;
163	u64 reqtok;
164	u32 reserved1[4];
165	struct chsc_header response;
166	u64:56;
167	u8 rq;
168	u32 mbc;
169	u64 msa;
170	u16 is;
171	u16 mmc;
172	u32 mci;
173	u64 nr_scm_ini;
174	u64 nr_scm_unini;
175	u32 reserved2[10];
176	u64 restok;
177	struct sale scmal[248];
178} __packed;
179
180int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
181
182struct chsc_brinfo_resume_token {
183	u64 t1;
184	u64 t2;
185} __packed;
186
187struct chsc_brinfo_naihdr {
188	struct chsc_brinfo_resume_token resume_token;
189	u32:32;
190	u32 instance;
191	u32:24;
192	u8 naids;
193	u32 reserved[3];
194} __packed;
195
196struct chsc_pnso_area {
197	struct chsc_header request;
198	u8:2;
199	u8 m:1;
200	u8:5;
201	u8:2;
202	u8 ssid:2;
203	u8 fmt:4;
204	u16 sch;
205	u8:8;
206	u8 cssid;
207	u16:16;
208	u8 oc;
209	u32:24;
210	struct chsc_brinfo_resume_token resume_token;
211	u32 n:1;
212	u32:31;
213	u32 reserved[3];
214	struct chsc_header response;
215	u32:32;
216	struct chsc_brinfo_naihdr naihdr;
217	union {
218		struct qdio_brinfo_entry_l3_ipv6 l3_ipv6[0];
219		struct qdio_brinfo_entry_l3_ipv4 l3_ipv4[0];
220		struct qdio_brinfo_entry_l2	 l2[0];
221	} entries;
222} __packed;
223
224int chsc_pnso_brinfo(struct subchannel_id schid,
225		struct chsc_pnso_area *brinfo_area,
226		struct chsc_brinfo_resume_token resume_token,
227		int cnc);
228
229#ifdef CONFIG_SCM_BUS
230int scm_update_information(void);
231int scm_process_availability_information(void);
232#else /* CONFIG_SCM_BUS */
233static inline int scm_update_information(void) { return 0; }
234static inline int scm_process_availability_information(void) { return 0; }
235#endif /* CONFIG_SCM_BUS */
236
237
238#endif
239