drivers/s390/cio/chsc.h

   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         u32:32;
 116         u8 data[0];
 117 } __packed;
 118
 119 struct chsc_sda_area {
 120         struct chsc_header request;
 121         u8 :4;
 122         u8 format:4;
 123         u8 :8;
 124         u16 operation_code;
 125         u32 :32;
 126         u32 :32;
 127         u32 operation_data_area[252];
 128         struct chsc_header response;
 129         u32 :4;
 130         u32 format2:4;
 131         u32 :24;
 132 } __packed __aligned(PAGE_SIZE);
 133
 134 extern int chsc_get_ssd_info(struct subchannel_id schid,
 135                              struct chsc_ssd_info *ssd);
 136 extern int chsc_determine_css_characteristics(void);
 137 extern int chsc_init(void);
 138 extern void chsc_init_cleanup(void);
 139
 140 int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code);
 141 extern int chsc_enable_facility(int);
 142 struct channel_subsystem;
 143 extern int chsc_secm(struct channel_subsystem *, int);
 144 int __chsc_do_secm(struct channel_subsystem *css, int enable);
 145
 146 int chsc_chp_vary(struct chp_id chpid, int on);
 147 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
 148                                      int c, int m, void *page);
 149 int chsc_determine_base_channel_path_desc(struct chp_id chpid,
 150                                           struct channel_path_desc *desc);
 151 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
 152                                           struct channel_path_desc_fmt1 *desc);
 153 void chsc_chp_online(struct chp_id chpid);
 154 void chsc_chp_offline(struct chp_id chpid);
 155 int chsc_get_channel_measurement_chars(struct channel_path *chp);
 156 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
 157 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
 158               u64 summary_indicator_addr, u64 subchannel_indicator_addr);
 159 int chsc_error_from_response(int response);
 160
 161 int chsc_siosl(struct subchannel_id schid);
 162
 163 /* Functions and definitions to query storage-class memory. */
 164 struct sale {
 165         u64 sa;
 166         u32 p:4;
 167         u32 op_state:4;
 168         u32 data_state:4;
 169         u32 rank:4;
 170         u32 r:1;
 171         u32:7;
 172         u32 rid:8;
 173         u32:32;
 174 } __packed;
 175
 176 struct chsc_scm_info {
 177         struct chsc_header request;
 178         u32:32;
 179         u64 reqtok;
 180         u32 reserved1[4];
 181         struct chsc_header response;
 182         u64:56;
 183         u8 rq;
 184         u32 mbc;
 185         u64 msa;
 186         u16 is;
 187         u16 mmc;
 188         u32 mci;
 189         u64 nr_scm_ini;
 190         u64 nr_scm_unini;
 191         u32 reserved2[10];
 192         u64 restok;
 193         struct sale scmal[248];
 194 } __packed;
 195
 196 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
 197
 198 struct chsc_brinfo_resume_token {
 199         u64 t1;
 200         u64 t2;
 201 } __packed;
 202
 203 struct chsc_brinfo_naihdr {
 204         struct chsc_brinfo_resume_token resume_token;
 205         u32:32;
 206         u32 instance;
 207         u32:24;
 208         u8 naids;
 209         u32 reserved[3];
 210 } __packed;
 211
 212 struct chsc_pnso_area {
 213         struct chsc_header request;
 214         u8:2;
 215         u8 m:1;
 216         u8:5;
 217         u8:2;
 218         u8 ssid:2;
 219         u8 fmt:4;
 220         u16 sch;
 221         u8:8;
 222         u8 cssid;
 223         u16:16;
 224         u8 oc;
 225         u32:24;
 226         struct chsc_brinfo_resume_token resume_token;
 227         u32 n:1;
 228         u32:31;
 229         u32 reserved[3];
 230         struct chsc_header response;
 231         u32:32;
 232         struct chsc_brinfo_naihdr naihdr;
 233         union {
 234                 struct qdio_brinfo_entry_l3_ipv6 l3_ipv6[0];
 235                 struct qdio_brinfo_entry_l3_ipv4 l3_ipv4[0];
 236                 struct qdio_brinfo_entry_l2      l2[0];
 237         } entries;
 238 } __packed;
 239
 240 int chsc_pnso_brinfo(struct subchannel_id schid,
 241                 struct chsc_pnso_area *brinfo_area,
 242                 struct chsc_brinfo_resume_token resume_token,
 243                 int cnc);
 244
 245 int __init chsc_get_cssid(int idx);
 246
 247 #ifdef CONFIG_SCM_BUS
 248 int scm_update_information(void);
 249 int scm_process_availability_information(void);
 250 #else /* CONFIG_SCM_BUS */
 251 static inline int scm_update_information(void) { return 0; }
 252 static inline int scm_process_availability_information(void) { return 0; }
 253 #endif /* CONFIG_SCM_BUS */
 254
 255
 256 #endif