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 } __attribute__ ((packed)); 19 20 #define NR_MEASUREMENT_ENTRIES 8 21 struct cmg_entry { 22 u32 values[NR_MEASUREMENT_ENTRIES]; 23 } __attribute__ ((packed)); 24 25 struct channel_path_desc_fmt1 { 26 u8 flags; 27 u8 lsn; 28 u8 desc; 29 u8 chpid; 30 u32:24; 31 u8 chpp; 32 u32 unused[2]; 33 u16 chid; 34 u32:16; 35 u16 mdc; 36 u16:13; 37 u8 r:1; 38 u8 s:1; 39 u8 f:1; 40 u32 zeros[2]; 41 } __attribute__ ((packed)); 42 43 struct channel_path; 44 45 struct css_chsc_char { 46 u64 res; 47 u64 : 20; 48 u32 secm : 1; /* bit 84 */ 49 u32 : 1; 50 u32 scmc : 1; /* bit 86 */ 51 u32 : 20; 52 u32 scssc : 1; /* bit 107 */ 53 u32 scsscf : 1; /* bit 108 */ 54 u32:7; 55 u32 pnso:1; /* bit 116 */ 56 u32:11; 57 }__attribute__((packed)); 58 59 extern struct css_chsc_char css_chsc_characteristics; 60 61 struct chsc_ssd_info { 62 u8 path_mask; 63 u8 fla_valid_mask; 64 struct chp_id chpid[8]; 65 u16 fla[8]; 66 }; 67 68 struct chsc_ssqd_area { 69 struct chsc_header request; 70 u16:10; 71 u8 ssid:2; 72 u8 fmt:4; 73 u16 first_sch; 74 u16:16; 75 u16 last_sch; 76 u32:32; 77 struct chsc_header response; 78 u32:32; 79 struct qdio_ssqd_desc qdio_ssqd; 80 } __packed; 81 82 struct chsc_scssc_area { 83 struct chsc_header request; 84 u16 operation_code; 85 u16:16; 86 u32:32; 87 u32:32; 88 u64 summary_indicator_addr; 89 u64 subchannel_indicator_addr; 90 u32 ks:4; 91 u32 kc:4; 92 u32:21; 93 u32 isc:3; 94 u32 word_with_d_bit; 95 u32:32; 96 struct subchannel_id schid; 97 u32 reserved[1004]; 98 struct chsc_header response; 99 u32:32; 100 } __packed; 101 102 struct chsc_scpd { 103 struct chsc_header request; 104 u32:2; 105 u32 m:1; 106 u32 c:1; 107 u32 fmt:4; 108 u32 cssid:8; 109 u32:4; 110 u32 rfmt:4; 111 u32 first_chpid:8; 112 u32:24; 113 u32 last_chpid:8; 114 u32 zeroes1; 115 struct chsc_header response; 116 u32:32; 117 u8 data[0]; 118 } __packed; 119 120 struct chsc_sda_area { 121 struct chsc_header request; 122 u8 :4; 123 u8 format:4; 124 u8 :8; 125 u16 operation_code; 126 u32 :32; 127 u32 :32; 128 u32 operation_data_area[252]; 129 struct chsc_header response; 130 u32 :4; 131 u32 format2:4; 132 u32 :24; 133 } __packed __aligned(PAGE_SIZE); 134 135 extern int chsc_get_ssd_info(struct subchannel_id schid, 136 struct chsc_ssd_info *ssd); 137 extern int chsc_determine_css_characteristics(void); 138 extern int chsc_init(void); 139 extern void chsc_init_cleanup(void); 140 141 int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code); 142 extern int chsc_enable_facility(int); 143 struct channel_subsystem; 144 extern int chsc_secm(struct channel_subsystem *, int); 145 int __chsc_do_secm(struct channel_subsystem *css, int enable); 146 147 int chsc_chp_vary(struct chp_id chpid, int on); 148 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt, 149 int c, int m, void *page); 150 int chsc_determine_base_channel_path_desc(struct chp_id chpid, 151 struct channel_path_desc *desc); 152 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid, 153 struct channel_path_desc_fmt1 *desc); 154 void chsc_chp_online(struct chp_id chpid); 155 void chsc_chp_offline(struct chp_id chpid); 156 int chsc_get_channel_measurement_chars(struct channel_path *chp); 157 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd); 158 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc, 159 u64 summary_indicator_addr, u64 subchannel_indicator_addr); 160 int chsc_error_from_response(int response); 161 162 int chsc_siosl(struct subchannel_id schid); 163 164 /* Functions and definitions to query storage-class memory. */ 165 struct sale { 166 u64 sa; 167 u32 p:4; 168 u32 op_state:4; 169 u32 data_state:4; 170 u32 rank:4; 171 u32 r:1; 172 u32:7; 173 u32 rid:8; 174 u32:32; 175 } __packed; 176 177 struct chsc_scm_info { 178 struct chsc_header request; 179 u32:32; 180 u64 reqtok; 181 u32 reserved1[4]; 182 struct chsc_header response; 183 u64:56; 184 u8 rq; 185 u32 mbc; 186 u64 msa; 187 u16 is; 188 u16 mmc; 189 u32 mci; 190 u64 nr_scm_ini; 191 u64 nr_scm_unini; 192 u32 reserved2[10]; 193 u64 restok; 194 struct sale scmal[248]; 195 } __packed; 196 197 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token); 198 199 struct chsc_brinfo_resume_token { 200 u64 t1; 201 u64 t2; 202 } __packed; 203 204 struct chsc_brinfo_naihdr { 205 struct chsc_brinfo_resume_token resume_token; 206 u32:32; 207 u32 instance; 208 u32:24; 209 u8 naids; 210 u32 reserved[3]; 211 } __packed; 212 213 struct chsc_pnso_area { 214 struct chsc_header request; 215 u8:2; 216 u8 m:1; 217 u8:5; 218 u8:2; 219 u8 ssid:2; 220 u8 fmt:4; 221 u16 sch; 222 u8:8; 223 u8 cssid; 224 u16:16; 225 u8 oc; 226 u32:24; 227 struct chsc_brinfo_resume_token resume_token; 228 u32 n:1; 229 u32:31; 230 u32 reserved[3]; 231 struct chsc_header response; 232 u32:32; 233 struct chsc_brinfo_naihdr naihdr; 234 union { 235 struct qdio_brinfo_entry_l3_ipv6 l3_ipv6[0]; 236 struct qdio_brinfo_entry_l3_ipv4 l3_ipv4[0]; 237 struct qdio_brinfo_entry_l2 l2[0]; 238 } entries; 239 } __packed; 240 241 int chsc_pnso_brinfo(struct subchannel_id schid, 242 struct chsc_pnso_area *brinfo_area, 243 struct chsc_brinfo_resume_token resume_token, 244 int cnc); 245 246 int __init chsc_get_cssid(int idx); 247 248 #ifdef CONFIG_SCM_BUS 249 int scm_update_information(void); 250 int scm_process_availability_information(void); 251 #else /* CONFIG_SCM_BUS */ 252 static inline int scm_update_information(void) { return 0; } 253 static inline int scm_process_availability_information(void) { return 0; } 254 #endif /* CONFIG_SCM_BUS */ 255 256 257 #endif 258