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_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 42 struct channel_path; 43 44 struct 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 58 extern struct css_chsc_char css_chsc_characteristics; 59 60 struct chsc_ssd_info { 61 u8 path_mask; 62 u8 fla_valid_mask; 63 struct chp_id chpid[8]; 64 u16 fla[8]; 65 }; 66 67 struct 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 81 struct 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; 100 101 struct 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 struct 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); 132 133 extern int chsc_get_ssd_info(struct subchannel_id schid, 134 struct chsc_ssd_info *ssd); 135 extern int chsc_determine_css_characteristics(void); 136 extern int chsc_init(void); 137 extern void chsc_init_cleanup(void); 138 139 int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code); 140 extern int chsc_enable_facility(int); 141 struct channel_subsystem; 142 extern int chsc_secm(struct channel_subsystem *, int); 143 int __chsc_do_secm(struct channel_subsystem *css, int enable); 144 145 int chsc_chp_vary(struct chp_id chpid, int on); 146 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt, 147 int c, int m, void *page); 148 int chsc_determine_base_channel_path_desc(struct chp_id chpid, 149 struct channel_path_desc *desc); 150 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid, 151 struct channel_path_desc_fmt1 *desc); 152 void chsc_chp_online(struct chp_id chpid); 153 void chsc_chp_offline(struct chp_id chpid); 154 int chsc_get_channel_measurement_chars(struct channel_path *chp); 155 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd); 156 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc, 157 u64 summary_indicator_addr, u64 subchannel_indicator_addr); 158 int chsc_error_from_response(int response); 159 160 int chsc_siosl(struct subchannel_id schid); 161 162 /* Functions and definitions to query storage-class memory. */ 163 struct 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; 174 175 struct 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; 194 195 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token); 196 197 struct chsc_brinfo_resume_token { 198 u64 t1; 199 u64 t2; 200 } __packed; 201 202 struct 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; 210 211 struct 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; 238 239 int 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 245 int scm_update_information(void); 246 int scm_process_availability_information(void); 247 #else /* CONFIG_SCM_BUS */ 248 static inline int scm_update_information(void) { return 0; } 249 static inline int scm_process_availability_information(void) { return 0; } 250 #endif /* CONFIG_SCM_BUS */ 251 252 253 #endif 254