1 #ifndef S390_CIO_IOASM_H 2 #define S390_CIO_IOASM_H 3 4 #include <asm/chpid.h> 5 #include <asm/schid.h> 6 7 /* 8 * TPI info structure 9 */ 10 struct tpi_info { 11 struct subchannel_id schid; 12 __u32 intparm; /* interruption parameter */ 13 __u32 adapter_IO : 1; 14 __u32 reserved2 : 1; 15 __u32 isc : 3; 16 __u32 reserved3 : 12; 17 __u32 int_type : 3; 18 __u32 reserved4 : 12; 19 } __attribute__ ((packed)); 20 21 22 /* 23 * Some S390 specific IO instructions as inline 24 */ 25 26 static inline int stsch_err(struct subchannel_id schid, struct schib *addr) 27 { 28 register struct subchannel_id reg1 asm ("1") = schid; 29 int ccode = -EIO; 30 31 asm volatile( 32 " stsch 0(%3)\n" 33 "0: ipm %0\n" 34 " srl %0,28\n" 35 "1:\n" 36 EX_TABLE(0b,1b) 37 : "+d" (ccode), "=m" (*addr) 38 : "d" (reg1), "a" (addr) 39 : "cc"); 40 return ccode; 41 } 42 43 static inline int msch(struct subchannel_id schid, struct schib *addr) 44 { 45 register struct subchannel_id reg1 asm ("1") = schid; 46 int ccode; 47 48 asm volatile( 49 " msch 0(%2)\n" 50 " ipm %0\n" 51 " srl %0,28" 52 : "=d" (ccode) 53 : "d" (reg1), "a" (addr), "m" (*addr) 54 : "cc"); 55 return ccode; 56 } 57 58 static inline int msch_err(struct subchannel_id schid, struct schib *addr) 59 { 60 register struct subchannel_id reg1 asm ("1") = schid; 61 int ccode = -EIO; 62 63 asm volatile( 64 " msch 0(%2)\n" 65 "0: ipm %0\n" 66 " srl %0,28\n" 67 "1:\n" 68 EX_TABLE(0b,1b) 69 : "+d" (ccode) 70 : "d" (reg1), "a" (addr), "m" (*addr) 71 : "cc"); 72 return ccode; 73 } 74 75 static inline int tsch(struct subchannel_id schid, struct irb *addr) 76 { 77 register struct subchannel_id reg1 asm ("1") = schid; 78 int ccode; 79 80 asm volatile( 81 " tsch 0(%3)\n" 82 " ipm %0\n" 83 " srl %0,28" 84 : "=d" (ccode), "=m" (*addr) 85 : "d" (reg1), "a" (addr) 86 : "cc"); 87 return ccode; 88 } 89 90 static inline int tpi(struct tpi_info *addr) 91 { 92 int ccode; 93 94 asm volatile( 95 " tpi 0(%2)\n" 96 " ipm %0\n" 97 " srl %0,28" 98 : "=d" (ccode), "=m" (*addr) 99 : "a" (addr) 100 : "cc"); 101 return ccode; 102 } 103 104 static inline int chsc(void *chsc_area) 105 { 106 typedef struct { char _[4096]; } addr_type; 107 int cc; 108 109 asm volatile( 110 " .insn rre,0xb25f0000,%2,0\n" 111 " ipm %0\n" 112 " srl %0,28\n" 113 : "=d" (cc), "=m" (*(addr_type *) chsc_area) 114 : "d" (chsc_area), "m" (*(addr_type *) chsc_area) 115 : "cc"); 116 return cc; 117 } 118 119 static inline int rchp(struct chp_id chpid) 120 { 121 register struct chp_id reg1 asm ("1") = chpid; 122 int ccode; 123 124 asm volatile( 125 " lr 1,%1\n" 126 " rchp\n" 127 " ipm %0\n" 128 " srl %0,28" 129 : "=d" (ccode) : "d" (reg1) : "cc"); 130 return ccode; 131 } 132 133 #endif 134