drivers/s390/cio/chsc.h

   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         u32:24;
  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 };
  42
  43 struct channel_path_desc_fmt3 {
  44         struct channel_path_desc_fmt1 fmt1_desc;
  45         u8 util_str[64];
  46 };
  47
  48 struct channel_path;
  49
  50 struct css_chsc_char {
  51         u64 res;
  52         u64 : 20;
  53         u32 secm : 1; /* bit 84 */
  54         u32 : 1;
  55         u32 scmc : 1; /* bit 86 */
  56         u32 : 20;
  57         u32 scssc : 1;  /* bit 107 */
  58         u32 scsscf : 1; /* bit 108 */
  59         u32:7;
  60         u32 pnso:1; /* bit 116 */
  61         u32:11;
  62 } __packed;
  63
  64 extern struct css_chsc_char css_chsc_characteristics;
  65
  66 struct chsc_ssd_info {
  67         u8 path_mask;
  68         u8 fla_valid_mask;
  69         struct chp_id chpid[8];
  70         u16 fla[8];
  71 };
  72
  73 struct chsc_ssqd_area {
  74         struct chsc_header request;
  75         u16:10;
  76         u8 ssid:2;
  77         u8 fmt:4;
  78         u16 first_sch;
  79         u16:16;
  80         u16 last_sch;
  81         u32:32;
  82         struct chsc_header response;
  83         u32:32;
  84         struct qdio_ssqd_desc qdio_ssqd;
  85 } __packed __aligned(PAGE_SIZE);
  86
  87 struct chsc_scssc_area {
  88         struct chsc_header request;
  89         u16 operation_code;
  90         u16:16;
  91         u32:32;
  92         u32:32;
  93         u64 summary_indicator_addr;
  94         u64 subchannel_indicator_addr;
  95         u32 ks:4;
  96         u32 kc:4;
  97         u32:21;
  98         u32 isc:3;
  99         u32 word_with_d_bit;
 100         u32:32;
 101         struct subchannel_id schid;
 102         u32 reserved[1004];
 103         struct chsc_header response;
 104         u32:32;
 105 } __packed __aligned(PAGE_SIZE);
 106
 107 struct chsc_scpd {
 108         struct chsc_header request;
 109         u32:2;
 110         u32 m:1;
 111         u32 c:1;
 112         u32 fmt:4;
 113         u32 cssid:8;
 114         u32:4;
 115         u32 rfmt:4;
 116         u32 first_chpid:8;
 117         u32:24;
 118         u32 last_chpid:8;
 119         u32 zeroes1;
 120         struct chsc_header response;
 121         u32:32;
 122         u8 data[0];
 123 } __packed __aligned(PAGE_SIZE);
 124
 125 struct chsc_sda_area {
 126         struct chsc_header request;
 127         u8 :4;
 128         u8 format:4;
 129         u8 :8;
 130         u16 operation_code;
 131         u32 :32;
 132         u32 :32;
 133         u32 operation_data_area[252];
 134         struct chsc_header response;
 135         u32 :4;
 136         u32 format2:4;
 137         u32 :24;
 138 } __packed __aligned(PAGE_SIZE);
 139
 140 extern int chsc_get_ssd_info(struct subchannel_id schid,
 141                              struct chsc_ssd_info *ssd);
 142 extern int chsc_determine_css_characteristics(void);
 143 extern int chsc_init(void);
 144 extern void chsc_init_cleanup(void);
 145
 146 int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code);
 147 extern int chsc_enable_facility(int);
 148 struct channel_subsystem;
 149 extern int chsc_secm(struct channel_subsystem *, int);
 150 int __chsc_do_secm(struct channel_subsystem *css, int enable);
 151
 152 int chsc_chp_vary(struct chp_id chpid, int on);
 153 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
 154                                      int c, int m, void *page);
 155 int chsc_determine_fmt0_channel_path_desc(struct chp_id chpid,
 156                                           struct channel_path_desc_fmt0 *desc);
 157 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
 158                                           struct channel_path_desc_fmt1 *desc);
 159 int chsc_determine_fmt3_channel_path_desc(struct chp_id chpid,
 160                                           struct channel_path_desc_fmt3 *desc);
 161 void chsc_chp_online(struct chp_id chpid);
 162 void chsc_chp_offline(struct chp_id chpid);
 163 int chsc_get_channel_measurement_chars(struct channel_path *chp);
 164 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
 165 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
 166               u64 summary_indicator_addr, u64 subchannel_indicator_addr,
 167               u8 isc);
 168 int chsc_sgib(u32 origin);
 169 int chsc_error_from_response(int response);
 170
 171 int chsc_siosl(struct subchannel_id schid);
 172
 173 /* Functions and definitions to query storage-class memory. */
 174 struct sale {
 175         u64 sa;
 176         u32 p:4;
 177         u32 op_state:4;
 178         u32 data_state:4;
 179         u32 rank:4;
 180         u32 r:1;
 181         u32:7;
 182         u32 rid:8;
 183         u32:32;
 184 } __packed;
 185
 186 struct chsc_scm_info {
 187         struct chsc_header request;
 188         u32:32;
 189         u64 reqtok;
 190         u32 reserved1[4];
 191         struct chsc_header response;
 192         u64:56;
 193         u8 rq;
 194         u32 mbc;
 195         u64 msa;
 196         u16 is;
 197         u16 mmc;
 198         u32 mci;
 199         u64 nr_scm_ini;
 200         u64 nr_scm_unini;
 201         u32 reserved2[10];
 202         u64 restok;
 203         struct sale scmal[248];
 204 } __packed __aligned(PAGE_SIZE);
 205
 206 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
 207
 208 struct chsc_brinfo_resume_token {
 209         u64 t1;
 210         u64 t2;
 211 } __packed;
 212
 213 struct chsc_brinfo_naihdr {
 214         struct chsc_brinfo_resume_token resume_token;
 215         u32:32;
 216         u32 instance;
 217         u32:24;
 218         u8 naids;
 219         u32 reserved[3];
 220 } __packed;
 221
 222 struct chsc_pnso_area {
 223         struct chsc_header request;
 224         u8:2;
 225         u8 m:1;
 226         u8:5;
 227         u8:2;
 228         u8 ssid:2;
 229         u8 fmt:4;
 230         u16 sch;
 231         u8:8;
 232         u8 cssid;
 233         u16:16;
 234         u8 oc;
 235         u32:24;
 236         struct chsc_brinfo_resume_token resume_token;
 237         u32 n:1;
 238         u32:31;
 239         u32 reserved[3];
 240         struct chsc_header response;
 241         u32:32;
 242         struct chsc_brinfo_naihdr naihdr;
 243         union {
 244                 struct qdio_brinfo_entry_l3_ipv6 l3_ipv6[0];
 245                 struct qdio_brinfo_entry_l3_ipv4 l3_ipv4[0];
 246                 struct qdio_brinfo_entry_l2      l2[0];
 247         } entries;
 248 } __packed __aligned(PAGE_SIZE);
 249
 250 int chsc_pnso_brinfo(struct subchannel_id schid,
 251                 struct chsc_pnso_area *brinfo_area,
 252                 struct chsc_brinfo_resume_token resume_token,
 253                 int cnc);
 254
 255 int __init chsc_get_cssid(int idx);
 256
 257 #ifdef CONFIG_SCM_BUS
 258 int scm_update_information(void);
 259 int scm_process_availability_information(void);
 260 #else /* CONFIG_SCM_BUS */
 261 static inline int scm_update_information(void) { return 0; }
 262 static inline int scm_process_availability_information(void) { return 0; }
 263 #endif /* CONFIG_SCM_BUS */
 264
 265
 266 #endif