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 {
  25         u8 flags;
  26         u8 lsn;
  27         u8 desc;
  28         u8 chpid;
  29         u8 swla;
  30         u8 zeroes;
  31         u8 chla;
  32         u8 chpp;
  33 } __attribute__ ((packed));
  34
  35 struct channel_path_desc_fmt1 {
  36         u8 flags;
  37         u8 lsn;
  38         u8 desc;
  39         u8 chpid;
  40         u32:24;
  41         u8 chpp;
  42         u32 unused[2];
  43         u16 chid;
  44         u32:16;
  45         u16 mdc;
  46         u16:13;
  47         u8 r:1;
  48         u8 s:1;
  49         u8 f:1;
  50         u32 zeros[2];
  51 } __attribute__ ((packed));
  52
  53 struct channel_path;
  54
  55 struct css_chsc_char {
  56         u64 res;
  57         u64 : 20;
  58         u32 secm : 1; /* bit 84 */
  59         u32 : 1;
  60         u32 scmc : 1; /* bit 86 */
  61         u32 : 20;
  62         u32 scssc : 1;  /* bit 107 */
  63         u32 scsscf : 1; /* bit 108 */
  64         u32 : 19;
  65 }__attribute__((packed));
  66
  67 extern struct css_chsc_char css_chsc_characteristics;
  68
  69 struct chsc_ssd_info {
  70         u8 path_mask;
  71         u8 fla_valid_mask;
  72         struct chp_id chpid[8];
  73         u16 fla[8];
  74 };
  75
  76 struct chsc_ssqd_area {
  77         struct chsc_header request;
  78         u16:10;
  79         u8 ssid:2;
  80         u8 fmt:4;
  81         u16 first_sch;
  82         u16:16;
  83         u16 last_sch;
  84         u32:32;
  85         struct chsc_header response;
  86         u32:32;
  87         struct qdio_ssqd_desc qdio_ssqd;
  88 } __packed;
  89
  90 struct chsc_scssc_area {
  91         struct chsc_header request;
  92         u16 operation_code;
  93         u16:16;
  94         u32:32;
  95         u32:32;
  96         u64 summary_indicator_addr;
  97         u64 subchannel_indicator_addr;
  98         u32 ks:4;
  99         u32 kc:4;
 100         u32:21;
 101         u32 isc:3;
 102         u32 word_with_d_bit;
 103         u32:32;
 104         struct subchannel_id schid;
 105         u32 reserved[1004];
 106         struct chsc_header response;
 107         u32:32;
 108 } __packed;
 109
 110 struct chsc_scpd {
 111         struct chsc_header request;
 112         u32:2;
 113         u32 m:1;
 114         u32 c:1;
 115         u32 fmt:4;
 116         u32 cssid:8;
 117         u32:4;
 118         u32 rfmt:4;
 119         u32 first_chpid:8;
 120         u32:24;
 121         u32 last_chpid:8;
 122         u32 zeroes1;
 123         struct chsc_header response;
 124         u8 data[PAGE_SIZE - 20];
 125 } __attribute__ ((packed));
 126
 127
 128 extern int chsc_get_ssd_info(struct subchannel_id schid,
 129                              struct chsc_ssd_info *ssd);
 130 extern int chsc_determine_css_characteristics(void);
 131 extern int chsc_init(void);
 132 extern void chsc_init_cleanup(void);
 133
 134 extern int chsc_enable_facility(int);
 135 struct channel_subsystem;
 136 extern int chsc_secm(struct channel_subsystem *, int);
 137 int __chsc_do_secm(struct channel_subsystem *css, int enable);
 138
 139 int chsc_chp_vary(struct chp_id chpid, int on);
 140 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
 141                                      int c, int m, void *page);
 142 int chsc_determine_base_channel_path_desc(struct chp_id chpid,
 143                                           struct channel_path_desc *desc);
 144 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
 145                                           struct channel_path_desc_fmt1 *desc);
 146 void chsc_chp_online(struct chp_id chpid);
 147 void chsc_chp_offline(struct chp_id chpid);
 148 int chsc_get_channel_measurement_chars(struct channel_path *chp);
 149 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
 150 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
 151               u64 summary_indicator_addr, u64 subchannel_indicator_addr);
 152 int chsc_error_from_response(int response);
 153
 154 int chsc_siosl(struct subchannel_id schid);
 155
 156 /* Functions and definitions to query storage-class memory. */
 157 struct sale {
 158         u64 sa;
 159         u32 p:4;
 160         u32 op_state:4;
 161         u32 data_state:4;
 162         u32 rank:4;
 163         u32 r:1;
 164         u32:7;
 165         u32 rid:8;
 166         u32:32;
 167 } __packed;
 168
 169 struct chsc_scm_info {
 170         struct chsc_header request;
 171         u32:32;
 172         u64 reqtok;
 173         u32 reserved1[4];
 174         struct chsc_header response;
 175         u64:56;
 176         u8 rq;
 177         u32 mbc;
 178         u64 msa;
 179         u16 is;
 180         u16 mmc;
 181         u32 mci;
 182         u64 nr_scm_ini;
 183         u64 nr_scm_unini;
 184         u32 reserved2[10];
 185         u64 restok;
 186         struct sale scmal[248];
 187 } __packed;
 188
 189 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
 190
 191 #ifdef CONFIG_SCM_BUS
 192 int scm_update_information(void);
 193 int scm_process_availability_information(void);
 194 #else /* CONFIG_SCM_BUS */
 195 static inline int scm_update_information(void) { return 0; }
 196 static inline int scm_process_availability_information(void) { return 0; }
 197 #endif /* CONFIG_SCM_BUS */
 198
 199
 200 #endif