diff options
Diffstat (limited to 'drivers/s390/cio/io_sch.h')
-rw-r--r-- | drivers/s390/cio/io_sch.h | 48 |
1 files changed, 39 insertions, 9 deletions
diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h index 8c613160bfce..3f8f1cf69c76 100644 --- a/drivers/s390/cio/io_sch.h +++ b/drivers/s390/cio/io_sch.h @@ -1,12 +1,12 @@ #ifndef S390_IO_SCH_H #define S390_IO_SCH_H -#include "schid.h" +#include <asm/schid.h> /* - * operation request block + * command-mode operation request block */ -struct orb { +struct cmd_orb { u32 intparm; /* interruption parameter */ u32 key : 4; /* flags, like key, suspend control, etc. */ u32 spnd : 1; /* suspend control */ @@ -28,8 +28,36 @@ struct orb { u32 cpa; /* channel program address */ } __attribute__ ((packed, aligned(4))); +/* + * transport-mode operation request block + */ +struct tm_orb { + u32 intparm; + u32 key:4; + u32 :9; + u32 b:1; + u32 :2; + u32 lpm:8; + u32 :7; + u32 x:1; + u32 tcw; + u32 prio:8; + u32 :8; + u32 rsvpgm:8; + u32 :8; + u32 :32; + u32 :32; + u32 :32; + u32 :32; +} __attribute__ ((packed, aligned(4))); + +union orb { + struct cmd_orb cmd; + struct tm_orb tm; +} __attribute__ ((packed, aligned(4))); + struct io_subchannel_private { - struct orb orb; /* operation request block */ + union orb orb; /* operation request block */ struct ccw1 sense_ccw; /* static ccw for sense command */ } __attribute__ ((aligned(8))); @@ -95,16 +123,18 @@ struct ccw_device_private { void *cmb_wait; /* deferred cmb enable/disable */ }; -static inline int ssch(struct subchannel_id schid, volatile struct orb *addr) +static inline int ssch(struct subchannel_id schid, volatile union orb *addr) { register struct subchannel_id reg1 asm("1") = schid; - int ccode; + int ccode = -EIO; asm volatile( " ssch 0(%2)\n" - " ipm %0\n" - " srl %0,28" - : "=d" (ccode) : "d" (reg1), "a" (addr), "m" (*addr) : "cc"); + "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; } |