linux-imx
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committed d485235b005x
// SPDX-License-Identifier: GPL-2.0/* * Channel subsystem I/O instructions. */static inline int __stsch(struct subchannel_id schid, struct schib *addr){ register struct subchannel_id reg1 asm ("1") = schid; int ccode = -EIO; asm volatile( " stsch 0(%3)\n" "0: ipm %0\n" " srl %0,28\n" "1:\n" EX_TABLE(0b, 1b) : "+d" (ccode), "=m" (*addr) : "d" (reg1), "a" (addr) : "cc"); return ccode;}int stsch(struct subchannel_id schid, struct schib *addr){ int ccode; ccode = __stsch(schid, addr); trace_s390_cio_stsch(schid, addr, ccode); return ccode;}EXPORT_SYMBOL(stsch);static inline int __msch(struct subchannel_id schid, struct schib *addr){ register struct subchannel_id reg1 asm ("1") = schid; int ccode = -EIO; asm volatile( " msch 0(%2)\n" "0: ipm %0\n" " srl %0,28\n" "1:\n" EX_TABLE(0b, 1b) : "+d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc"); return ccode;}int msch(struct subchannel_id schid, struct schib *addr){ int ccode; ccode = __msch(schid, addr); trace_s390_cio_msch(schid, addr, ccode); return ccode;}static inline int __tsch(struct subchannel_id schid, struct irb *addr){ register struct subchannel_id reg1 asm ("1") = schid; int ccode; asm volatile( " tsch 0(%3)\n" " ipm %0\n" " srl %0,28" : "=d" (ccode), "=m" (*addr) : "d" (reg1), "a" (addr) : "cc"); return ccode;}int tsch(struct subchannel_id schid, struct irb *addr){ int ccode; ccode = __tsch(schid, addr); trace_s390_cio_tsch(schid, addr, ccode);