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         u32:16;
  31         u8 esc;
  32         u8 chpp;
  33         u32 unused[2];
  34         u16 chid;
  35         u32:16;
  36         u16 mdc;
  37         u16:13;
  38         u8 r:1;
  39         u8 s:1;
  40         u8 f:1;
  41         u32 zeros[2];
  42 };
  43
  44 struct channel_path_desc_fmt3 {
  45         struct channel_path_desc_fmt1 fmt1_desc;
  46         u8 util_str[64];
  47 };
  48
  49 struct channel_path;
  50
  51 struct css_chsc_char {
  52         u64 res;
  53         u64 : 20;
  54         u32 secm : 1; /* bit 84 */
  55         u32 : 1;
  56         u32 scmc : 1; /* bit 86 */
  57         u32 : 20;
  58         u32 scssc : 1;  /* bit 107 */
  59         u32 scsscf : 1; /* bit 108 */
  60         u32:7;
  61         u32 pnso:1; /* bit 116 */
  62         u32:11;
  63 } __packed;
  64
  65 extern struct css_chsc_char css_chsc_characteristics;
  66
  67 struct chsc_ssd_info {
  68         u8 path_mask;
  69         u8 fla_valid_mask;
  70         struct chp_id chpid[8];
  71         u16 fla[8];
  72 };
  73
  74 struct chsc_ssqd_area {
  75         struct chsc_header request;
  76         u16:10;
  77         u8 ssid:2;
  78         u8 fmt:4;
  79         u16 first_sch;
  80         u16:16;
  81         u16 last_sch;
  82         u32:32;
  83         struct chsc_header response;
  84         u32:32;
  85         struct qdio_ssqd_desc qdio_ssqd;
  86 } __packed __aligned(PAGE_SIZE);
  87
  88 struct chsc_scssc_area {
  89         struct chsc_header request;
  90         u16 operation_code;
  91         u16:16;
  92         u32:32;
  93         u32:32;
  94         u64 summary_indicator_addr;
  95         u64 subchannel_indicator_addr;
  96         u32 ks:4;
  97         u32 kc:4;
  98         u32:21;
  99         u32 isc:3;
 100         u32 word_with_d_bit;
 101         u32:32;
 102         struct subchannel_id schid;
 103         u32 reserved[1004];
 104         struct chsc_header response;
 105         u32:32;
 106 } __packed __aligned(PAGE_SIZE);
 107
 108 struct chsc_scpd {
 109         struct chsc_header request;
 110         u32:2;
 111         u32 m:1;
 112         u32 c:1;
 113         u32 fmt:4;
 114         u32 cssid:8;
 115         u32:4;
 116         u32 rfmt:4;
 117         u32 first_chpid:8;
 118         u32:24;
 119         u32 last_chpid:8;
 120         u32 zeroes1;
 121         struct chsc_header response;
 122         u32:32;
 123         u8 data[0];
 124 } __packed __aligned(PAGE_SIZE);
 125
 126 struct chsc_sda_area {
 127         struct chsc_header request;
 128         u8 :4;
 129         u8 format:4;
 130         u8 :8;
 131         u16 operation_code;
 132         u32 :32;
 133         u32 :32;
 134         u32 operation_data_area[252];
 135         struct chsc_header response;
 136         u32 :4;
 137         u32 format2:4;
 138         u32 :24;
 139 } __packed __aligned(PAGE_SIZE);
 140
 141 extern int chsc_get_ssd_info(struct subchannel_id schid,
 142                              struct chsc_ssd_info *ssd);
 143 extern int chsc_determine_css_characteristics(void);
 144 extern int chsc_init(void);
 145 extern void chsc_init_cleanup(void);
 146
 147 int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code);
 148 extern int chsc_enable_facility(int);
 149 struct channel_subsystem;
 150 extern int chsc_secm(struct channel_subsystem *, int);
 151 int __chsc_do_secm(struct channel_subsystem *css, int enable);
 152
 153 int chsc_chp_vary(struct chp_id chpid, int on);
 154 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt,
 155                                      int c, int m, void *page);
 156 int chsc_determine_fmt0_channel_path_desc(struct chp_id chpid,
 157                                           struct channel_path_desc_fmt0 *desc);
 158 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid,
 159                                           struct channel_path_desc_fmt1 *desc);
 160 int chsc_determine_fmt3_channel_path_desc(struct chp_id chpid,
 161                                           struct channel_path_desc_fmt3 *desc);
 162 void chsc_chp_online(struct chp_id chpid);
 163 void chsc_chp_offline(struct chp_id chpid);
 164 int chsc_get_channel_measurement_chars(struct channel_path *chp);
 165 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd);
 166 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc,
 167               u64 summary_indicator_addr, u64 subchannel_indicator_addr,
 168               u8 isc);
 169 int chsc_sgib(u32 origin);
 170 int chsc_error_from_response(int response);
 171
 172 int chsc_siosl(struct subchannel_id schid);
 173
 174 /* Functions and definitions to query storage-class memory. */
 175 struct sale {
 176         u64 sa;
 177         u32 p:4;
 178         u32 op_state:4;
 179         u32 data_state:4;
 180         u32 rank:4;
 181         u32 r:1;
 182         u32:7;
 183         u32 rid:8;
 184         u32:32;
 185 } __packed;
 186
 187 struct chsc_scm_info {
 188         struct chsc_header request;
 189         u32:32;
 190         u64 reqtok;
 191         u32 reserved1[4];
 192         struct chsc_header response;
 193         u64:56;
 194         u8 rq;
 195         u32 mbc;
 196         u64 msa;
 197         u16 is;
 198         u16 mmc;
 199         u32 mci;
 200         u64 nr_scm_ini;
 201         u64 nr_scm_unini;
 202         u32 reserved2[10];
 203         u64 restok;
 204         struct sale scmal[248];
 205 } __packed __aligned(PAGE_SIZE);
 206
 207 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token);
 208
 209 int chsc_pnso(struct subchannel_id schid, struct chsc_pnso_area *pnso_area,
 210               u8 oc, struct chsc_pnso_resume_token resume_token, int cnc);
 211
 212 int __init chsc_get_cssid_iid(int idx, u8 *cssid, u8 *iid);
 213
 214 #ifdef CONFIG_SCM_BUS
 215 int scm_update_information(void);
 216 int scm_process_availability_information(void);
 217 #else /* CONFIG_SCM_BUS */
 218 static inline int scm_update_information(void) { return 0; }
 219 static inline int scm_process_availability_information(void) { return 0; }
 220 #endif /* CONFIG_SCM_BUS */
 221
 222
 223 #endif