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         u8 data[PAGE_SIZE - 20];
 116 } __attribute__ ((packed));
 117
 118
 119 extern int chsc_get_ssd_info(struct subchannel_id schid,
 120                              struct chsc_ssd_info *ssd);
 121 extern int chsc_determine_css_characteristics(void);
 122 extern int chsc_init(void);
 123 extern void chsc_init_cleanup(void);
 124
 125 extern int chsc_enable_facility(int);
 126 struct channel_subsystem;
 127 extern int chsc_secm(struct channel_subsystem *, int);
 128 int __chsc_do_secm(struct channel_subsystem *css, int enable);
 129
 130 int chsc_chp_vary(struct chp_id chpid, int on);
 131 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
 132                                      int c, int m, void *page);
 133 int chsc_determine_base_channel_path_desc(struct chp_id chpid,
 134                                           struct channel_path_desc *desc);
 135 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
 136                                           struct channel_path_desc_fmt1 *desc);
 137 void chsc_chp_online(struct chp_id chpid);
 138 void chsc_chp_offline(struct chp_id chpid);
 139 int chsc_get_channel_measurement_chars(struct channel_path *chp);
 140 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
 141 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
 142               u64 summary_indicator_addr, u64 subchannel_indicator_addr);
 143 int chsc_error_from_response(int response);
 144
 145 int chsc_siosl(struct subchannel_id schid);
 146
 147 /* Functions and definitions to query storage-class memory. */
 148 struct sale {
 149         u64 sa;
 150         u32 p:4;
 151         u32 op_state:4;
 152         u32 data_state:4;
 153         u32 rank:4;
 154         u32 r:1;
 155         u32:7;
 156         u32 rid:8;
 157         u32:32;
 158 } __packed;
 159
 160 struct chsc_scm_info {
 161         struct chsc_header request;
 162         u32:32;
 163         u64 reqtok;
 164         u32 reserved1[4];
 165         struct chsc_header response;
 166         u64:56;
 167         u8 rq;
 168         u32 mbc;
 169         u64 msa;
 170         u16 is;
 171         u16 mmc;
 172         u32 mci;
 173         u64 nr_scm_ini;
 174         u64 nr_scm_unini;
 175         u32 reserved2[10];
 176         u64 restok;
 177         struct sale scmal[248];
 178 } __packed;
 179
 180 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
 181
 182 struct chsc_brinfo_resume_token {
 183         u64 t1;
 184         u64 t2;
 185 } __packed;
 186
 187 struct chsc_brinfo_naihdr {
 188         struct chsc_brinfo_resume_token resume_token;
 189         u32:32;
 190         u32 instance;
 191         u32:24;
 192         u8 naids;
 193         u32 reserved[3];
 194 } __packed;
 195
 196 struct chsc_pnso_area {
 197         struct chsc_header request;
 198         u8:2;
 199         u8 m:1;
 200         u8:5;
 201         u8:2;
 202         u8 ssid:2;
 203         u8 fmt:4;
 204         u16 sch;
 205         u8:8;
 206         u8 cssid;
 207         u16:16;
 208         u8 oc;
 209         u32:24;
 210         struct chsc_brinfo_resume_token resume_token;
 211         u32 n:1;
 212         u32:31;
 213         u32 reserved[3];
 214         struct chsc_header response;
 215         u32:32;
 216         struct chsc_brinfo_naihdr naihdr;
 217         union {
 218                 struct qdio_brinfo_entry_l3_ipv6 l3_ipv6[0];
 219                 struct qdio_brinfo_entry_l3_ipv4 l3_ipv4[0];
 220                 struct qdio_brinfo_entry_l2      l2[0];
 221         } entries;
 222 } __packed;
 223
 224 int chsc_pnso_brinfo(struct subchannel_id schid,
 225                 struct chsc_pnso_area *brinfo_area,
 226                 struct chsc_brinfo_resume_token resume_token,
 227                 int cnc);
 228
 229 #ifdef CONFIG_SCM_BUS
 230 int scm_update_information(void);
 231 int scm_process_availability_information(void);
 232 #else /* CONFIG_SCM_BUS */
 233 static inline int scm_update_information(void) { return 0; }
 234 static inline int scm_process_availability_information(void) { return 0; }
 235 #endif /* CONFIG_SCM_BUS */
 236
 237
 238 #endif