drivers/s390/cio/ioasm.h

   1 #ifndef S390_CIO_IOASM_H
   2 #define S390_CIO_IOASM_H
   3
   4 #include "schid.h"
   5
   6 /*
   7  * TPI info structure
   8  */
   9 struct tpi_info {
  10         struct subchannel_id schid;
  11         __u32 intparm;           /* interruption parameter */
  12         __u32 adapter_IO : 1;
  13         __u32 reserved2  : 1;
  14         __u32 isc        : 3;
  15         __u32 reserved3  : 12;
  16         __u32 int_type   : 3;
  17         __u32 reserved4  : 12;
  18 } __attribute__ ((packed));
  19
  20
  21 /*
  22  * Some S390 specific IO instructions as inline
  23  */
  24
  25 static inline int stsch(struct subchannel_id schid,
  26                             volatile struct schib *addr)
  27 {
  28         int ccode;
  29
  30         __asm__ __volatile__(
  31                 "   lr    1,%1\n"
  32                 "   stsch 0(%2)\n"
  33                 "   ipm   %0\n"
  34                 "   srl   %0,28"
  35                 : "=d" (ccode)
  36                 : "d" (schid), "a" (addr), "m" (*addr)
  37                 : "cc", "1" );
  38         return ccode;
  39 }
  40
  41 static inline int stsch_err(struct subchannel_id schid,
  42                                 volatile struct schib *addr)
  43 {
  44         int ccode;
  45
  46         __asm__ __volatile__(
  47                 "    lhi  %0,%3\n"
  48                 "    lr   1,%1\n"
  49                 "    stsch 0(%2)\n"
  50                 "0:  ipm  %0\n"
  51                 "    srl  %0,28\n"
  52                 "1:\n"
  53 #ifdef CONFIG_64BIT
  54                 ".section __ex_table,\"a\"\n"
  55                 "   .align 8\n"
  56                 "   .quad 0b,1b\n"
  57                 ".previous"
  58 #else
  59                 ".section __ex_table,\"a\"\n"
  60                 "   .align 4\n"
  61                 "   .long 0b,1b\n"
  62                 ".previous"
  63 #endif
  64                 : "=&d" (ccode)
  65                 : "d" (schid), "a" (addr), "K" (-EIO), "m" (*addr)
  66                 : "cc", "1" );
  67         return ccode;
  68 }
  69
  70 static inline int msch(struct subchannel_id schid,
  71                            volatile struct schib *addr)
  72 {
  73         int ccode;
  74
  75         __asm__ __volatile__(
  76                 "   lr    1,%1\n"
  77                 "   msch  0(%2)\n"
  78                 "   ipm   %0\n"
  79                 "   srl   %0,28"
  80                 : "=d" (ccode)
  81                 : "d" (schid), "a" (addr), "m" (*addr)
  82                 : "cc", "1" );
  83         return ccode;
  84 }
  85
  86 static inline int msch_err(struct subchannel_id schid,
  87                                volatile struct schib *addr)
  88 {
  89         int ccode;
  90
  91         __asm__ __volatile__(
  92                 "    lhi  %0,%3\n"
  93                 "    lr   1,%1\n"
  94                 "    msch 0(%2)\n"
  95                 "0:  ipm  %0\n"
  96                 "    srl  %0,28\n"
  97                 "1:\n"
  98 #ifdef CONFIG_64BIT
  99                 ".section __ex_table,\"a\"\n"
 100                 "   .align 8\n"
 101                 "   .quad 0b,1b\n"
 102                 ".previous"
 103 #else
 104                 ".section __ex_table,\"a\"\n"
 105                 "   .align 4\n"
 106                 "   .long 0b,1b\n"
 107                 ".previous"
 108 #endif
 109                 : "=&d" (ccode)
 110                 : "d" (schid), "a" (addr), "K" (-EIO), "m" (*addr)
 111                 : "cc", "1" );
 112         return ccode;
 113 }
 114
 115 static inline int tsch(struct subchannel_id schid,
 116                            volatile struct irb *addr)
 117 {
 118         int ccode;
 119
 120         __asm__ __volatile__(
 121                 "   lr    1,%1\n"
 122                 "   tsch  0(%2)\n"
 123                 "   ipm   %0\n"
 124                 "   srl   %0,28"
 125                 : "=d" (ccode)
 126                 : "d" (schid), "a" (addr), "m" (*addr)
 127                 : "cc", "1" );
 128         return ccode;
 129 }
 130
 131 static inline int tpi( volatile struct tpi_info *addr)
 132 {
 133         int ccode;
 134
 135         __asm__ __volatile__(
 136                 "   tpi   0(%1)\n"
 137                 "   ipm   %0\n"
 138                 "   srl   %0,28"
 139                 : "=d" (ccode)
 140                 : "a" (addr), "m" (*addr)
 141                 : "cc", "1" );
 142         return ccode;
 143 }
 144
 145 static inline int ssch(struct subchannel_id schid,
 146                            volatile struct orb *addr)
 147 {
 148         int ccode;
 149
 150         __asm__ __volatile__(
 151                 "   lr    1,%1\n"
 152                 "   ssch  0(%2)\n"
 153                 "   ipm   %0\n"
 154                 "   srl   %0,28"
 155                 : "=d" (ccode)
 156                 : "d" (schid), "a" (addr), "m" (*addr)
 157                 : "cc", "1" );
 158         return ccode;
 159 }
 160
 161 static inline int rsch(struct subchannel_id schid)
 162 {
 163         int ccode;
 164
 165         __asm__ __volatile__(
 166                 "   lr    1,%1\n"
 167                 "   rsch\n"
 168                 "   ipm   %0\n"
 169                 "   srl   %0,28"
 170                 : "=d" (ccode)
 171                 : "d" (schid)
 172                 : "cc", "1" );
 173         return ccode;
 174 }
 175
 176 static inline int csch(struct subchannel_id schid)
 177 {
 178         int ccode;
 179
 180         __asm__ __volatile__(
 181                 "   lr    1,%1\n"
 182                 "   csch\n"
 183                 "   ipm   %0\n"
 184                 "   srl   %0,28"
 185                 : "=d" (ccode)
 186                 : "d" (schid)
 187                 : "cc", "1" );
 188         return ccode;
 189 }
 190
 191 static inline int hsch(struct subchannel_id schid)
 192 {
 193         int ccode;
 194
 195         __asm__ __volatile__(
 196                 "   lr    1,%1\n"
 197                 "   hsch\n"
 198                 "   ipm   %0\n"
 199                 "   srl   %0,28"
 200                 : "=d" (ccode)
 201                 : "d" (schid)
 202                 : "cc", "1" );
 203         return ccode;
 204 }
 205
 206 static inline int xsch(struct subchannel_id schid)
 207 {
 208         int ccode;
 209
 210         __asm__ __volatile__(
 211                 "   lr    1,%1\n"
 212                 "   .insn rre,0xb2760000,%1,0\n"
 213                 "   ipm   %0\n"
 214                 "   srl   %0,28"
 215                 : "=d" (ccode)
 216                 : "d" (schid)
 217                 : "cc", "1" );
 218         return ccode;
 219 }
 220
 221 static inline int chsc(void *chsc_area)
 222 {
 223         typedef struct { char _[4096]; } addr_type;
 224         int cc;
 225
 226         __asm__ __volatile__ (
 227                 ".insn  rre,0xb25f0000,%2,0     \n\t"
 228                 "ipm    %0      \n\t"
 229                 "srl    %0,28   \n\t"
 230                 : "=d" (cc), "=m" (*(addr_type *) chsc_area)
 231                 : "d" (chsc_area), "m" (*(addr_type *) chsc_area)
 232                 : "cc" );
 233
 234         return cc;
 235 }
 236
 237 static inline int iac( void)
 238 {
 239         int ccode;
 240
 241         __asm__ __volatile__(
 242                 "   iac   1\n"
 243                 "   ipm   %0\n"
 244                 "   srl   %0,28"
 245                 : "=d" (ccode) : : "cc", "1" );
 246         return ccode;
 247 }
 248
 249 static inline int rchp(int chpid)
 250 {
 251         int ccode;
 252
 253         __asm__ __volatile__(
 254                 "   lr    1,%1\n"
 255                 "   rchp\n"
 256                 "   ipm   %0\n"
 257                 "   srl   %0,28"
 258                 : "=d" (ccode)
 259                 : "d" (chpid)
 260                 : "cc", "1" );
 261         return ccode;
 262 }
 263
 264 #endif