Merge branch 'x86/for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip...

[pandora-kernel.git] / drivers / s390 / cio / io_sch.h

diff --git a/drivers/s390/cio/io_sch.h b/drivers/s390/cio/io_sch.h
index 8c61316..3f8f1cf 100644 (file)
--- 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;
 }