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 } __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