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 201