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 u32:24; 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 }; 42 43 struct channel_path_desc_fmt3 { 44 struct channel_path_desc_fmt1 fmt1_desc; 45 u8 util_str[64]; 46 }; 47 48 struct channel_path; 49 50 struct css_chsc_char { 51 u64 res; 52 u64 : 20; 53 u32 secm : 1; /* bit 84 */ 54 u32 : 1; 55 u32 scmc : 1; /* bit 86 */ 56 u32 : 20; 57 u32 scssc : 1; /* bit 107 */ 58 u32 scsscf : 1; /* bit 108 */ 59 u32:7; 60 u32 pnso:1; /* bit 116 */ 61 u32:11; 62 } __packed; 63 64 extern struct css_chsc_char css_chsc_characteristics; 65 66 struct chsc_ssd_info { 67 u8 path_mask; 68 u8 fla_valid_mask; 69 struct chp_id chpid[8]; 70 u16 fla[8]; 71 }; 72 73 struct chsc_ssqd_area { 74 struct chsc_header request; 75 u16:10; 76 u8 ssid:2; 77 u8 fmt:4; 78 u16 first_sch; 79 u16:16; 80 u16 last_sch; 81 u32:32; 82 struct chsc_header response; 83 u32:32; 84 struct qdio_ssqd_desc qdio_ssqd; 85 } __packed __aligned(PAGE_SIZE); 86 87 struct chsc_scssc_area { 88 struct chsc_header request; 89 u16 operation_code; 90 u16:16; 91 u32:32; 92 u32:32; 93 u64 summary_indicator_addr; 94 u64 subchannel_indicator_addr; 95 u32 ks:4; 96 u32 kc:4; 97 u32:21; 98 u32 isc:3; 99 u32 word_with_d_bit; 100 u32:32; 101 struct subchannel_id schid; 102 u32 reserved[1004]; 103 struct chsc_header response; 104 u32:32; 105 } __packed __aligned(PAGE_SIZE); 106 107 struct chsc_scpd { 108 struct chsc_header request; 109 u32:2; 110 u32 m:1; 111 u32 c:1; 112 u32 fmt:4; 113 u32 cssid:8; 114 u32:4; 115 u32 rfmt:4; 116 u32 first_chpid:8; 117 u32:24; 118 u32 last_chpid:8; 119 u32 zeroes1; 120 struct chsc_header response; 121 u32:32; 122 u8 data[0]; 123 } __packed __aligned(PAGE_SIZE); 124 125 struct chsc_sda_area { 126 struct chsc_header request; 127 u8 :4; 128 u8 format:4; 129 u8 :8; 130 u16 operation_code; 131 u32 :32; 132 u32 :32; 133 u32 operation_data_area[252]; 134 struct chsc_header response; 135 u32 :4; 136 u32 format2:4; 137 u32 :24; 138 } __packed __aligned(PAGE_SIZE); 139 140 extern int chsc_get_ssd_info(struct subchannel_id schid, 141 struct chsc_ssd_info *ssd); 142 extern int chsc_determine_css_characteristics(void); 143 extern int chsc_init(void); 144 extern void chsc_init_cleanup(void); 145 146 int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code); 147 extern int chsc_enable_facility(int); 148 struct channel_subsystem; 149 extern int chsc_secm(struct channel_subsystem *, int); 150 int __chsc_do_secm(struct channel_subsystem *css, int enable); 151 152 int chsc_chp_vary(struct chp_id chpid, int on); 153 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt, 154 int c, int m, void *page); 155 int chsc_determine_fmt0_channel_path_desc(struct chp_id chpid, 156 struct channel_path_desc_fmt0 *desc); 157 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid, 158 struct channel_path_desc_fmt1 *desc); 159 int chsc_determine_fmt3_channel_path_desc(struct chp_id chpid, 160 struct channel_path_desc_fmt3 *desc); 161 void chsc_chp_online(struct chp_id chpid); 162 void chsc_chp_offline(struct chp_id chpid); 163 int chsc_get_channel_measurement_chars(struct channel_path *chp); 164 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd); 165 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc, 166 u64 summary_indicator_addr, u64 subchannel_indicator_addr, 167 u8 isc); 168 int chsc_sgib(u32 origin); 169 int chsc_error_from_response(int response); 170 171 int chsc_siosl(struct subchannel_id schid); 172 173 /* Functions and definitions to query storage-class memory. */ 174 struct sale { 175 u64 sa; 176 u32 p:4; 177 u32 op_state:4; 178 u32 data_state:4; 179 u32 rank:4; 180 u32 r:1; 181 u32:7; 182 u32 rid:8; 183 u32:32; 184 } __packed; 185 186 struct chsc_scm_info { 187 struct chsc_header request; 188 u32:32; 189 u64 reqtok; 190 u32 reserved1[4]; 191 struct chsc_header response; 192 u64:56; 193 u8 rq; 194 u32 mbc; 195 u64 msa; 196 u16 is; 197 u16 mmc; 198 u32 mci; 199 u64 nr_scm_ini; 200 u64 nr_scm_unini; 201 u32 reserved2[10]; 202 u64 restok; 203 struct sale scmal[248]; 204 } __packed __aligned(PAGE_SIZE); 205 206 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token); 207 208 int chsc_pnso(struct subchannel_id schid, 209 struct chsc_pnso_area *pnso_area, 210 struct chsc_pnso_resume_token resume_token, 211 int cnc); 212 213 int __init chsc_get_cssid(int idx); 214 215 #ifdef CONFIG_SCM_BUS 216 int scm_update_information(void); 217 int scm_process_availability_information(void); 218 #else /* CONFIG_SCM_BUS */ 219 static inline int scm_update_information(void) { return 0; } 220 static inline int scm_process_availability_information(void) { return 0; } 221 #endif /* CONFIG_SCM_BUS */ 222 223 224 #endif 225