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 #define NR_EXT_MEASUREMENT_ENTRIES 16 26 struct cmg_ext_entry { 27 u32 values[NR_EXT_MEASUREMENT_ENTRIES]; 28 }; 29 30 struct channel_path_desc_fmt1 { 31 u8 flags; 32 u8 lsn; 33 u8 desc; 34 u8 chpid; 35 u32:16; 36 u8 esc; 37 u8 chpp; 38 u32 unused[2]; 39 u16 chid; 40 u32:16; 41 u16 mdc; 42 u16:13; 43 u8 r:1; 44 u8 s:1; 45 u8 f:1; 46 u32 zeros[2]; 47 }; 48 49 struct channel_path_desc_fmt3 { 50 struct channel_path_desc_fmt1 fmt1_desc; 51 u8 util_str[64]; 52 }; 53 54 struct channel_path; 55 56 struct css_chsc_char { 57 u64 res; 58 u64 : 20; 59 u32 secm : 1; /* bit 84 */ 60 u32 : 1; 61 u32 scmc : 1; /* bit 86 */ 62 u32 : 20; 63 u32 scssc : 1; /* bit 107 */ 64 u32 scsscf : 1; /* bit 108 */ 65 u32:7; 66 u32 pnso:1; /* bit 116 */ 67 u32:11; 68 } __packed; 69 70 extern struct css_chsc_char css_chsc_characteristics; 71 72 struct chsc_ssd_info { 73 u8 path_mask; 74 u8 fla_valid_mask; 75 struct chp_id chpid[8]; 76 u16 fla[8]; 77 }; 78 79 struct chsc_ssqd_area { 80 struct chsc_header request; 81 u16:10; 82 u8 ssid:2; 83 u8 fmt:4; 84 u16 first_sch; 85 u16:16; 86 u16 last_sch; 87 u32:32; 88 struct chsc_header response; 89 u32:32; 90 struct qdio_ssqd_desc qdio_ssqd; 91 } __packed __aligned(PAGE_SIZE); 92 93 struct chsc_scssc_area { 94 struct chsc_header request; 95 u16 operation_code; 96 u16:16; 97 u32:32; 98 u32:32; 99 dma64_t summary_indicator_addr; 100 dma64_t subchannel_indicator_addr; 101 u32 ks:4; 102 u32 kc:4; 103 u32:21; 104 u32 isc:3; 105 u32 word_with_d_bit; 106 u32:32; 107 struct subchannel_id schid; 108 u32 reserved[1004]; 109 struct chsc_header response; 110 u32:32; 111 } __packed __aligned(PAGE_SIZE); 112 113 struct chsc_scpd { 114 struct chsc_header request; 115 u32:2; 116 u32 m:1; 117 u32 c:1; 118 u32 fmt:4; 119 u32 cssid:8; 120 u32:4; 121 u32 rfmt:4; 122 u32 first_chpid:8; 123 u32:24; 124 u32 last_chpid:8; 125 u32 zeroes1; 126 struct chsc_header response; 127 u32:32; 128 u8 data[]; 129 } __packed __aligned(PAGE_SIZE); 130 131 struct chsc_sda_area { 132 struct chsc_header request; 133 u8 :4; 134 u8 format:4; 135 u8 :8; 136 u16 operation_code; 137 u32 :32; 138 u32 :32; 139 u32 operation_data_area[252]; 140 struct chsc_header response; 141 u32 :4; 142 u32 format2:4; 143 u32 :24; 144 } __packed __aligned(PAGE_SIZE); 145 146 extern int chsc_get_ssd_info(struct subchannel_id schid, 147 struct chsc_ssd_info *ssd); 148 extern int chsc_determine_css_characteristics(void); 149 extern int chsc_init(void); 150 extern void chsc_init_cleanup(void); 151 152 int __chsc_enable_facility(struct chsc_sda_area *sda_area, int operation_code); 153 extern int chsc_enable_facility(int); 154 struct channel_subsystem; 155 extern int chsc_secm(struct channel_subsystem *, int); 156 int __chsc_do_secm(struct channel_subsystem *css, int enable); 157 158 int chsc_chp_vary(struct chp_id chpid, int on); 159 int chsc_determine_channel_path_desc(struct chp_id chpid, int fmt, int rfmt, 160 int c, int m, void *page); 161 int chsc_determine_fmt0_channel_path_desc(struct chp_id chpid, 162 struct channel_path_desc_fmt0 *desc); 163 int chsc_determine_fmt1_channel_path_desc(struct chp_id chpid, 164 struct channel_path_desc_fmt1 *desc); 165 int chsc_determine_fmt3_channel_path_desc(struct chp_id chpid, 166 struct channel_path_desc_fmt3 *desc); 167 void chsc_chp_online(struct chp_id chpid); 168 void chsc_chp_offline(struct chp_id chpid); 169 int chsc_get_channel_measurement_chars(struct channel_path *chp); 170 int chsc_ssqd(struct subchannel_id schid, struct chsc_ssqd_area *ssqd); 171 int chsc_sadc(struct subchannel_id schid, struct chsc_scssc_area *scssc, 172 dma64_t summary_indicator_addr, dma64_t subchannel_indicator_addr, 173 u8 isc); 174 int chsc_sgib(u32 origin); 175 int chsc_error_from_response(int response); 176 177 int chsc_siosl(struct subchannel_id schid); 178 179 /* Functions and definitions to query storage-class memory. */ 180 struct sale { 181 u64 sa; 182 u32 p:4; 183 u32 op_state:4; 184 u32 data_state:4; 185 u32 rank:4; 186 u32 r:1; 187 u32:7; 188 u32 rid:8; 189 u32:32; 190 } __packed; 191 192 struct chsc_scm_info { 193 struct chsc_header request; 194 u32:32; 195 u64 reqtok; 196 u32 reserved1[4]; 197 struct chsc_header response; 198 u64:56; 199 u8 rq; 200 u32 mbc; 201 u64 msa; 202 u16 is; 203 u16 mmc; 204 u32 mci; 205 u64 nr_scm_ini; 206 u64 nr_scm_unini; 207 u32 reserved2[10]; 208 u64 restok; 209 struct sale scmal[248]; 210 } __packed __aligned(PAGE_SIZE); 211 212 int chsc_scm_info(struct chsc_scm_info *scm_area, u64 token); 213 214 int chsc_pnso(struct subchannel_id schid, struct chsc_pnso_area *pnso_area, 215 u8 oc, struct chsc_pnso_resume_token resume_token, int cnc); 216 217 int __init chsc_get_cssid_iid(int idx, u8 *cssid, u8 *iid); 218 219 #ifdef CONFIG_SCM_BUS 220 int scm_update_information(void); 221 int scm_process_availability_information(void); 222 #else /* CONFIG_SCM_BUS */ 223 static inline int scm_update_information(void) { return 0; } 224 static inline int scm_process_availability_information(void) { return 0; } 225 #endif /* CONFIG_SCM_BUS */ 226 227 228 #endif 229