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 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[]; |
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 */ |
218 | static inline int scm_update_information(void) { return 0; } |
219 | static inline int scm_process_availability_information(void) { return 0; } |
220 | #endif /* CONFIG_SCM_BUS */ |
221 | |
222 | |
223 | #endif |
224 | |