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path: root/drivers/s390/net/iucv.c
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Diffstat (limited to 'drivers/s390/net/iucv.c')
-rw-r--r--drivers/s390/net/iucv.c39
1 files changed, 17 insertions, 22 deletions
diff --git a/drivers/s390/net/iucv.c b/drivers/s390/net/iucv.c
index 821dde86e240..809dd8d7f47a 100644
--- a/drivers/s390/net/iucv.c
+++ b/drivers/s390/net/iucv.c
@@ -534,19 +534,15 @@ iucv_add_handler (handler *new)
*
* Returns: return code from CP's IUCV call
*/
-static __inline__ ulong
-b2f0(__u32 code, void *parm)
+static inline ulong b2f0(__u32 code, void *parm)
{
+ register unsigned long reg0 asm ("0");
+ register unsigned long reg1 asm ("1");
iucv_dumpit("iparml before b2f0 call:", parm, sizeof(iucv_param));
- asm volatile (
- "LRA 1,0(%1)\n\t"
- "LR 0,%0\n\t"
- ".long 0xb2f01000"
- :
- : "d" (code), "a" (parm)
- : "0", "1"
- );
+ reg0 = code;
+ reg1 = virt_to_phys(parm);
+ asm volatile(".long 0xb2f01000" : : "d" (reg0), "a" (reg1));
iucv_dumpit("iparml after b2f0 call:", parm, sizeof(iucv_param));
@@ -1248,6 +1244,8 @@ iucv_purge (__u16 pathid, __u32 msgid, __u32 srccls, __u32 *audit)
static int
iucv_query_generic(int want_maxconn)
{
+ register unsigned long reg0 asm ("0");
+ register unsigned long reg1 asm ("1");
iparml_purge *parm = (iparml_purge *)grab_param();
int bufsize, maxconn;
int ccode;
@@ -1256,18 +1254,15 @@ iucv_query_generic(int want_maxconn)
* Call b2f0 and store R0 (max buffer size),
* R1 (max connections) and CC.
*/
- asm volatile (
- "LRA 1,0(%4)\n\t"
- "LR 0,%3\n\t"
- ".long 0xb2f01000\n\t"
- "IPM %0\n\t"
- "SRL %0,28\n\t"
- "ST 0,%1\n\t"
- "ST 1,%2\n\t"
- : "=d" (ccode), "=m" (bufsize), "=m" (maxconn)
- : "d" (QUERY), "a" (parm)
- : "0", "1", "cc"
- );
+ reg0 = QUERY;
+ reg1 = virt_to_phys(parm);
+ asm volatile(
+ " .long 0xb2f01000\n"
+ " ipm %0\n"
+ " srl %0,28\n"
+ : "=d" (ccode), "+d" (reg0), "+d" (reg1) : : "cc");
+ bufsize = reg0;
+ maxconn = reg1;
release_param(parm);
if (ccode)
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