1 #ifndef S390_CIO_IOASM_H 2 #define S390_CIO_IOASM_H 3 4 #include <asm/chpid.h> 5 #include <asm/schid.h> 6 #include <asm/crw.h> 7 #include "orb.h" 8 #include "cio.h" 9 #include "trace.h" 10 11 /* 12 * Some S390 specific IO instructions as inline 13 */ 14 15 static inline int stsch(struct subchannel_id schid, struct schib *addr) 16 { 17 register struct subchannel_id reg1 asm ("1") = schid; 18 int ccode = -EIO; 19 20 asm volatile( 21 " stsch 0(%3)\n" 22 "0: ipm %0\n" 23 " srl %0,28\n" 24 "1:\n" 25 EX_TABLE(0b,1b) 26 : "+d" (ccode), "=m" (*addr) 27 : "d" (reg1), "a" (addr) 28 : "cc"); 29 trace_s390_cio_stsch(schid, addr, ccode); 30 31 return ccode; 32 } 33 34 static inline int msch(struct subchannel_id schid, struct schib *addr) 35 { 36 register struct subchannel_id reg1 asm ("1") = schid; 37 int ccode = -EIO; 38 39 asm volatile( 40 " msch 0(%2)\n" 41 "0: ipm %0\n" 42 " srl %0,28\n" 43 "1:\n" 44 EX_TABLE(0b,1b) 45 : "+d" (ccode) 46 : "d" (reg1), "a" (addr), "m" (*addr) 47 : "cc"); 48 trace_s390_cio_msch(schid, addr, ccode); 49 50 return ccode; 51 } 52 53 static inline int tsch(struct subchannel_id schid, struct irb *addr) 54 { 55 register struct subchannel_id reg1 asm ("1") = schid; 56 int ccode; 57 58 asm volatile( 59 " tsch 0(%3)\n" 60 " ipm %0\n" 61 " srl %0,28" 62 : "=d" (ccode), "=m" (*addr) 63 : "d" (reg1), "a" (addr) 64 : "cc"); 65 trace_s390_cio_tsch(schid, addr, ccode); 66 67 return ccode; 68 } 69 70 static inline int ssch(struct subchannel_id schid, union orb *addr) 71 { 72 register struct subchannel_id reg1 asm("1") = schid; 73 int ccode = -EIO; 74 75 asm volatile( 76 " ssch 0(%2)\n" 77 "0: ipm %0\n" 78 " srl %0,28\n" 79 "1:\n" 80 EX_TABLE(0b, 1b) 81 : "+d" (ccode) 82 : "d" (reg1), "a" (addr), "m" (*addr) 83 : "cc", "memory"); 84 trace_s390_cio_ssch(schid, addr, ccode); 85 86 return ccode; 87 } 88 89 static inline int csch(struct subchannel_id schid) 90 { 91 register struct subchannel_id reg1 asm("1") = schid; 92 int ccode; 93 94 asm volatile( 95 " csch\n" 96 " ipm %0\n" 97 " srl %0,28" 98 : "=d" (ccode) 99 : "d" (reg1) 100 : "cc"); 101 trace_s390_cio_csch(schid, ccode); 102 103 return ccode; 104 } 105 106 static inline int tpi(struct tpi_info *addr) 107 { 108 int ccode; 109 110 asm volatile( 111 " tpi 0(%2)\n" 112 " ipm %0\n" 113 " srl %0,28" 114 : "=d" (ccode), "=m" (*addr) 115 : "a" (addr) 116 : "cc"); 117 trace_s390_cio_tpi(addr, ccode); 118 119 return ccode; 120 } 121 122 static inline int chsc(void *chsc_area) 123 { 124 typedef struct { char _[4096]; } addr_type; 125 int cc; 126 127 asm volatile( 128 " .insn rre,0xb25f0000,%2,0\n" 129 " ipm %0\n" 130 " srl %0,28\n" 131 : "=d" (cc), "=m" (*(addr_type *) chsc_area) 132 : "d" (chsc_area), "m" (*(addr_type *) chsc_area) 133 : "cc"); 134 trace_s390_cio_chsc(chsc_area, cc); 135 136 return cc; 137 } 138 139 static inline int rchp(struct chp_id chpid) 140 { 141 register struct chp_id reg1 asm ("1") = chpid; 142 int ccode; 143 144 asm volatile( 145 " lr 1,%1\n" 146 " rchp\n" 147 " ipm %0\n" 148 " srl %0,28" 149 : "=d" (ccode) : "d" (reg1) : "cc"); 150 trace_s390_cio_rchp(chpid, ccode); 151 152 return ccode; 153 } 154 155 static inline int rsch(struct subchannel_id schid) 156 { 157 register struct subchannel_id reg1 asm("1") = schid; 158 int ccode; 159 160 asm volatile( 161 " rsch\n" 162 " ipm %0\n" 163 " srl %0,28" 164 : "=d" (ccode) 165 : "d" (reg1) 166 : "cc", "memory"); 167 trace_s390_cio_rsch(schid, ccode); 168 169 return ccode; 170 } 171 172 static inline int hsch(struct subchannel_id schid) 173 { 174 register struct subchannel_id reg1 asm("1") = schid; 175 int ccode; 176 177 asm volatile( 178 " hsch\n" 179 " ipm %0\n" 180 " srl %0,28" 181 : "=d" (ccode) 182 : "d" (reg1) 183 : "cc"); 184 trace_s390_cio_hsch(schid, ccode); 185 186 return ccode; 187 } 188 189 static inline int xsch(struct subchannel_id schid) 190 { 191 register struct subchannel_id reg1 asm("1") = schid; 192 int ccode; 193 194 asm volatile( 195 " xsch\n" 196 " ipm %0\n" 197 " srl %0,28" 198 : "=d" (ccode) 199 : "d" (reg1) 200 : "cc"); 201 trace_s390_cio_xsch(schid, ccode); 202 203 return ccode; 204 } 205 206 static inline int stcrw(struct crw *crw) 207 { 208 int ccode; 209 210 asm volatile( 211 " stcrw 0(%2)\n" 212 " ipm %0\n" 213 " srl %0,28\n" 214 : "=d" (ccode), "=m" (*crw) 215 : "a" (crw) 216 : "cc"); 217 trace_s390_cio_stcrw(crw, ccode); 218 219 return ccode; 220 } 221 222 #endif 223