[POWERPC] clean up pseries hcall interfaces

Our pseries hcall interfaces are out of control:

	plpar_hcall_norets
	plpar_hcall
	plpar_hcall_8arg_2ret
	plpar_hcall_4out
	plpar_hcall_7arg_7ret
	plpar_hcall_9arg_9ret

Create 3 interfaces to cover all cases:

	plpar_hcall_norets:	7 arguments no returns
	plpar_hcall:		6 arguments 4 returns
	plpar_hcall9:		9 arguments 9 returns

There are only 2 cases in the kernel that need plpar_hcall9, hopefully
we can keep it that way.

Pass in a buffer to stash return parameters so we avoid the &dummy1,
&dummy2 madness.

Signed-off-by: Anton Blanchard <anton@samba.org>
--
Signed-off-by: Paul Mackerras <paulus@samba.org>

10 files changed, 184 insertions, 313 deletions

diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c
index 3ce3a2d56fa8..41c05dcd68f4 100644
--- a/arch/powerpc/kernel/lparcfg.c
+++ b/arch/powerpc/kernel/lparcfg.c
@@ -182,8 +182,14 @@ static unsigned int h_get_ppp(unsigned long *entitled,
                               unsigned long *resource)
 {
         unsigned long rc;
-        rc = plpar_hcall_4out(H_GET_PPP, 0, 0, 0, 0, entitled, unallocated,
-                              aggregation, resource);
+        unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+        rc = plpar_hcall(H_GET_PPP, retbuf);
+
+        *entitled = retbuf[0];
+        *unallocated = retbuf[1];
+        *aggregation = retbuf[2];
+        *resource = retbuf[3];
 
         log_plpar_hcall_return(rc, "H_GET_PPP");
 
@@ -193,8 +199,12 @@ static unsigned int h_get_ppp(unsigned long *entitled,
 static void h_pic(unsigned long *pool_idle_time, unsigned long *num_procs)
 {
         unsigned long rc;
-        unsigned long dummy;
-        rc = plpar_hcall(H_PIC, 0, 0, 0, 0, pool_idle_time, num_procs, &dummy);
+        unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+        rc = plpar_hcall(H_PIC, retbuf);
+
+        *pool_idle_time = retbuf[0];
+        *num_procs = retbuf[1];
 
         if (rc != H_AUTHORITY)
                 log_plpar_hcall_return(rc, "H_PIC");
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 10e10be324c9..14353b8789dd 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -668,15 +668,14 @@ static int rtas_ibm_suspend_me(struct rtas_args *args)
         int i;
         long state;
         long rc;
-        unsigned long dummy;
-
+        unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
         struct rtas_suspend_me_data data;
 
         /* Make sure the state is valid */
-        rc = plpar_hcall(H_VASI_STATE,
-                         ((u64)args->args[0] << 32) | args->args[1],
-                         0, 0, 0,
-                         &state, &dummy, &dummy);
+        rc = plpar_hcall(H_VASI_STATE, retbuf,
+                         ((u64)args->args[0] << 32) | args->args[1]);
+
+        state = retbuf[0];
 
         if (rc) {
                 printk(KERN_ERR "rtas_ibm_suspend_me: vasi_state returned %ld\n",rc);
diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S
index c9ff547f9d25..9a99b056bd27 100644
--- a/arch/powerpc/platforms/pseries/hvCall.S
+++ b/arch/powerpc/platforms/pseries/hvCall.S
@@ -1,7 +1,6 @@
 /*
  * This file contains the generic code to perform a call to the
  * pSeries LPAR hypervisor.
- * NOTE: this file will go away when we move to inline this work.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -16,42 +15,6 @@
 
         .text
 
-/* long plpar_hcall(unsigned long opcode,               R3
-                        unsigned long arg1,             R4
-                        unsigned long arg2,             R5
-                        unsigned long arg3,             R6
-                        unsigned long arg4,             R7
-                        unsigned long *out1,            R8
-                        unsigned long *out2,            R9
-                        unsigned long *out3);           R10
- */
-_GLOBAL(plpar_hcall)
-        HMT_MEDIUM
-
-        mfcr    r0
-
-        std     r8,STK_PARM(r8)(r1)     /* Save out ptrs */
-        std     r9,STK_PARM(r9)(r1)
-        std     r10,STK_PARM(r10)(r1)
-
-        stw     r0,8(r1)
-
-        HVSC                            /* invoke the hypervisor */
-
-        lwz     r0,8(r1)
-
-        ld      r8,STK_PARM(r8)(r1)     /* Fetch r4-r6 ret args */
-        ld      r9,STK_PARM(r9)(r1)
-        ld      r10,STK_PARM(r10)(r1)
-        std     r4,0(r8)
-        std     r5,0(r9)
-        std     r6,0(r10)
-
-        mtcrf   0xff,r0
-        blr                             /* return r3 = status */
-
-
-/* Simple interface with no output values (other than status) */
 _GLOBAL(plpar_hcall_norets)
         HMT_MEDIUM
 
@@ -64,164 +27,64 @@ _GLOBAL(plpar_hcall_norets)
         mtcrf   0xff,r0
         blr                             /* return r3 = status */
 
-
-/* long plpar_hcall_8arg_2ret(unsigned long opcode,     R3
-                        unsigned long arg1,             R4
-                        unsigned long arg2,             R5
-                        unsigned long arg3,             R6
-                        unsigned long arg4,             R7
-                        unsigned long arg5,             R8
-                        unsigned long arg6,             R9
-                        unsigned long arg7,             R10
-                        unsigned long arg8,             112(R1)
-                        unsigned long *out1);           120(R1)
- */
-_GLOBAL(plpar_hcall_8arg_2ret)
+_GLOBAL(plpar_hcall)
         HMT_MEDIUM
 
         mfcr    r0
-        ld      r11,STK_PARM(r11)(r1)   /* put arg8 in R11 */
         stw     r0,8(r1)
 
-        HVSC                            /* invoke the hypervisor */
-
-        lwz     r0,8(r1)
-        ld      r10,STK_PARM(r12)(r1)   /* Fetch r4 ret arg */
-        std     r4,0(r10)
-        mtcrf   0xff,r0
-        blr                             /* return r3 = status */
-
-
-/* long plpar_hcall_4out(unsigned long opcode,          R3
-                        unsigned long arg1,             R4
-                        unsigned long arg2,             R5
-                        unsigned long arg3,             R6
-                        unsigned long arg4,             R7
-                        unsigned long *out1,            R8
-                        unsigned long *out2,            R9
-                        unsigned long *out3,            R10
-                        unsigned long *out4);           112(R1)
- */
-_GLOBAL(plpar_hcall_4out)
-        HMT_MEDIUM
-
-        mfcr    r0
-        stw     r0,8(r1)
+        std     r4,STK_PARM(r4)(r1)     /* Save ret buffer */
 
-        std     r8,STK_PARM(r8)(r1)     /* Save out ptrs */
-        std     r9,STK_PARM(r9)(r1)
-        std     r10,STK_PARM(r10)(r1)
+        mr      r4,r5
+        mr      r5,r6
+        mr      r6,r7
+        mr      r7,r8
+        mr      r8,r9
+        mr      r9,r10
 
         HVSC                            /* invoke the hypervisor */
 
-        lwz     r0,8(r1)
-
-        ld      r8,STK_PARM(r8)(r1)     /* Fetch r4-r7 ret args */
-        ld      r9,STK_PARM(r9)(r1)
-        ld      r10,STK_PARM(r10)(r1)
-        ld      r11,STK_PARM(r11)(r1)
-        std     r4,0(r8)
-        std     r5,0(r9)
-        std     r6,0(r10)
-        std     r7,0(r11)
-
-        mtcrf   0xff,r0
-        blr                             /* return r3 = status */
-
-/* plpar_hcall_7arg_7ret(unsigned long opcode,          R3
-                         unsigned long arg1,            R4
-                         unsigned long arg2,            R5
-                         unsigned long arg3,            R6
-                         unsigned long arg4,            R7
-                         unsigned long arg5,            R8
-                         unsigned long arg6,            R9
-                         unsigned long arg7,            R10
-                         unsigned long *out1,           112(R1)
-                         unsigned long *out2,           110(R1)
-                         unsigned long *out3,           108(R1)
-                         unsigned long *out4,           106(R1)
-                         unsigned long *out5,           104(R1)
-                         unsigned long *out6,           102(R1)
-                         unsigned long *out7);          100(R1)
-*/
-_GLOBAL(plpar_hcall_7arg_7ret)
-        HMT_MEDIUM
-
-        mfcr    r0
-        stw     r0,8(r1)
-
-        HVSC                            /* invoke the hypervisor */
+        ld      r12,STK_PARM(r4)(r1)
+        std     r4,  0(r12)
+        std     r5,  8(r12)
+        std     r6, 16(r12)
+        std     r7, 24(r12)
 
         lwz     r0,8(r1)
-
-        ld      r11,STK_PARM(r11)(r1)   /* Fetch r4 ret arg */
-        std     r4,0(r11)
-        ld      r11,STK_PARM(r12)(r1)   /* Fetch r5 ret arg */
-        std     r5,0(r11)
-        ld      r11,STK_PARM(r13)(r1)   /* Fetch r6 ret arg */
-        std     r6,0(r11)
-        ld      r11,STK_PARM(r14)(r1)   /* Fetch r7 ret arg */
-        std     r7,0(r11)
-        ld      r11,STK_PARM(r15)(r1)   /* Fetch r8 ret arg */
-        std     r8,0(r11)
-        ld      r11,STK_PARM(r16)(r1)   /* Fetch r9 ret arg */
-        std     r9,0(r11)
-        ld      r11,STK_PARM(r17)(r1)   /* Fetch r10 ret arg */
-        std     r10,0(r11)
-
         mtcrf   0xff,r0
 
         blr                             /* return r3 = status */
 
-/* plpar_hcall_9arg_9ret(unsigned long opcode,          R3
-                         unsigned long arg1,            R4
-                         unsigned long arg2,            R5
-                         unsigned long arg3,            R6
-                         unsigned long arg4,            R7
-                         unsigned long arg5,            R8
-                         unsigned long arg6,            R9
-                         unsigned long arg7,            R10
-                         unsigned long arg8,            112(R1)
-                         unsigned long arg9,            110(R1)
-                         unsigned long *out1,           108(R1)
-                         unsigned long *out2,           106(R1)
-                         unsigned long *out3,           104(R1)
-                         unsigned long *out4,           102(R1)
-                         unsigned long *out5,           100(R1)
-                         unsigned long *out6,            98(R1)
-                         unsigned long *out7);           96(R1)
-                         unsigned long *out8,            94(R1)
-                         unsigned long *out9,            92(R1)
-*/
-_GLOBAL(plpar_hcall_9arg_9ret)
+_GLOBAL(plpar_hcall9)
         HMT_MEDIUM
 
         mfcr    r0
         stw     r0,8(r1)
 
-        ld      r11,STK_PARM(r11)(r1)    /* put arg8 in R11 */
-        ld      r12,STK_PARM(r12)(r1)    /* put arg9 in R12 */
+        std     r4,STK_PARM(r4)(r1)     /* Save ret buffer */
+
+        mr      r4,r5
+        mr      r5,r6
+        mr      r6,r7
+        mr      r7,r8
+        mr      r8,r9
+        mr      r9,r10
+        ld      r10,STK_PARM(r11)(r1)    /* put arg7 in R10 */
+        ld      r11,STK_PARM(r12)(r1)    /* put arg8 in R11 */
+        ld      r12,STK_PARM(r13)(r1)    /* put arg9 in R12 */
 
         HVSC                            /* invoke the hypervisor */
 
-        ld      r0,STK_PARM(r13)(r1)    /* Fetch r4 ret arg */
-        stdx    r4,r0,r0
-        ld      r0,STK_PARM(r14)(r1)    /* Fetch r5 ret arg */
-        stdx    r5,r0,r0
-        ld      r0,STK_PARM(r15)(r1)    /* Fetch r6 ret arg */
-        stdx    r6,r0,r0
-        ld      r0,STK_PARM(r16)(r1)    /* Fetch r7 ret arg */
-        stdx    r7,r0,r0
-        ld      r0,STK_PARM(r17)(r1)    /* Fetch r8 ret arg */
-        stdx    r8,r0,r0
-        ld      r0,STK_PARM(r18)(r1)    /* Fetch r9 ret arg */
-        stdx    r9,r0,r0
-        ld      r0,STK_PARM(r19)(r1)    /* Fetch r10 ret arg */
-        stdx    r10,r0,r0
-        ld      r0,STK_PARM(r20)(r1)    /* Fetch r11 ret arg */
-        stdx    r11,r0,r0
-        ld      r0,STK_PARM(r21)(r1)    /* Fetch r12 ret arg */
-        stdx    r12,r0,r0
+        ld      r12,STK_PARM(r4)(r1)
+        std     r4,  0(r12)
+        std     r5,  8(r12)
+        std     r6, 16(r12)
+        std     r7, 24(r12)
+        std     r8, 32(r12)
+        std     r9, 40(r12)
+        std     r10,48(r12)
+        std     r11,56(r12)
+        std     r12,64(r12)
 
         lwz     r0,8(r1)
         mtcrf   0xff,r0
diff --git a/arch/powerpc/platforms/pseries/hvconsole.c b/arch/powerpc/platforms/pseries/hvconsole.c
index a72a987f1d4d..3f6a89b09816 100644
--- a/arch/powerpc/platforms/pseries/hvconsole.c
+++ b/arch/powerpc/platforms/pseries/hvconsole.c
@@ -27,6 +27,7 @@
 #include <linux/module.h>
 #include <asm/hvcall.h>
 #include <asm/hvconsole.h>
+#include "plpar_wrappers.h"
 
 /**
  * hvc_get_chars - retrieve characters from firmware for denoted vterm adatper
@@ -40,9 +41,9 @@ int hvc_get_chars(uint32_t vtermno, char *buf, int count)
 {
         unsigned long got;
 
-        if (plpar_hcall(H_GET_TERM_CHAR, vtermno, 0, 0, 0, &got,
-                (unsigned long *)buf, (unsigned long *)buf+1) == H_SUCCESS)
+        if (plpar_get_term_char(vtermno, &got, buf) == H_SUCCESS)
                 return got;
+
         return 0;
 }
 
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index 4cb7ff227f72..6cbf14266d5e 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c
@@ -48,13 +48,11 @@
 #define DBG_LOW(fmt...) do { } while(0)
 #endif
 
-/* in pSeries_hvCall.S */
+/* in hvCall.S */
 EXPORT_SYMBOL(plpar_hcall);
-EXPORT_SYMBOL(plpar_hcall_4out);
+EXPORT_SYMBOL(plpar_hcall9);
 EXPORT_SYMBOL(plpar_hcall_norets);
-EXPORT_SYMBOL(plpar_hcall_8arg_2ret);
-EXPORT_SYMBOL(plpar_hcall_7arg_7ret);
-EXPORT_SYMBOL(plpar_hcall_9arg_9ret);
+
 extern void pSeries_find_serial_port(void);
 
 
@@ -277,7 +275,6 @@ long pSeries_lpar_hpte_insert(unsigned long hpte_group,
         unsigned long flags;
         unsigned long slot;
         unsigned long hpte_v, hpte_r;
-        unsigned long dummy0, dummy1;
 
         if (!(vflags & HPTE_V_BOLTED))
                 DBG_LOW("hpte_insert(group=%lx, va=%016lx, pa=%016lx, "
@@ -302,8 +299,7 @@ long pSeries_lpar_hpte_insert(unsigned long hpte_group,
         if (rflags & (_PAGE_GUARDED|_PAGE_NO_CACHE))
                 hpte_r &= ~_PAGE_COHERENT;
 
-        lpar_rc = plpar_hcall(H_ENTER, flags, hpte_group, hpte_v,
-                              hpte_r, &slot, &dummy0, &dummy1);
+        lpar_rc = plpar_pte_enter(flags, hpte_group, hpte_v, hpte_r, &slot);
         if (unlikely(lpar_rc == H_PTEG_FULL)) {
                 if (!(vflags & HPTE_V_BOLTED))
                         DBG_LOW(" full\n");
diff --git a/arch/powerpc/platforms/pseries/plpar_wrappers.h b/arch/powerpc/platforms/pseries/plpar_wrappers.h
index 3bd1b3e06003..ebd15de7597e 100644
--- a/arch/powerpc/platforms/pseries/plpar_wrappers.h
+++ b/arch/powerpc/platforms/pseries/plpar_wrappers.h
@@ -5,20 +5,17 @@
 
 static inline long poll_pending(void)
 {
-        unsigned long dummy;
-        return plpar_hcall(H_POLL_PENDING, 0, 0, 0, 0, &dummy, &dummy, &dummy);
+        return plpar_hcall_norets(H_POLL_PENDING);
 }
 
 static inline long prod_processor(void)
 {
-        plpar_hcall_norets(H_PROD);
-        return 0;
+        return plpar_hcall_norets(H_PROD);
 }
 
 static inline long cede_processor(void)
 {
-        plpar_hcall_norets(H_CEDE);
-        return 0;
+        return plpar_hcall_norets(H_CEDE);
 }
 
 static inline long vpa_call(unsigned long flags, unsigned long cpu,
@@ -42,21 +39,47 @@ static inline long register_vpa(unsigned long cpu, unsigned long vpa)
 
 extern void vpa_init(int cpu);
 
+static inline long plpar_pte_enter(unsigned long flags,
+                unsigned long hpte_group, unsigned long hpte_v,
+                unsigned long hpte_r, unsigned long *slot)
+{
+        long rc;
+        unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+        rc = plpar_hcall(H_ENTER, retbuf, flags, hpte_group, hpte_v, hpte_r);
+
+        *slot = retbuf[0];
+
+        return rc;
+}
+
 static inline long plpar_pte_remove(unsigned long flags, unsigned long ptex,
                 unsigned long avpn, unsigned long *old_pteh_ret,
                 unsigned long *old_ptel_ret)
 {
-        unsigned long dummy;
-        return plpar_hcall(H_REMOVE, flags, ptex, avpn, 0, old_pteh_ret,
-                        old_ptel_ret, &dummy);
+        long rc;
+        unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+        rc = plpar_hcall(H_REMOVE, retbuf, flags, ptex, avpn);
+
+        *old_pteh_ret = retbuf[0];
+        *old_ptel_ret = retbuf[1];
+
+        return rc;
 }
 
 static inline long plpar_pte_read(unsigned long flags, unsigned long ptex,
                 unsigned long *old_pteh_ret, unsigned long *old_ptel_ret)
 {
-        unsigned long dummy;
-        return plpar_hcall(H_READ, flags, ptex, 0, 0, old_pteh_ret,
-                        old_ptel_ret, &dummy);
+        long rc;
+        unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+        rc = plpar_hcall(H_READ, retbuf, flags, ptex);
+
+        *old_pteh_ret = retbuf[0];
+        *old_ptel_ret = retbuf[1];
+
+        return rc;
 }
 
 static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
@@ -68,9 +91,14 @@ static inline long plpar_pte_protect(unsigned long flags, unsigned long ptex,
 static inline long plpar_tce_get(unsigned long liobn, unsigned long ioba,
                 unsigned long *tce_ret)
 {
-        unsigned long dummy;
-        return plpar_hcall(H_GET_TCE, liobn, ioba, 0, 0, tce_ret, &dummy,
-                        &dummy);
+        long rc;
+        unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+        rc = plpar_hcall(H_GET_TCE, retbuf, liobn, ioba);
+
+        *tce_ret = retbuf[0];
+
+        return rc;
 }
 
 static inline long plpar_tce_put(unsigned long liobn, unsigned long ioba,
@@ -94,9 +122,17 @@ static inline long plpar_tce_stuff(unsigned long liobn, unsigned long ioba,
 static inline long plpar_get_term_char(unsigned long termno,
                 unsigned long *len_ret, char *buf_ret)
 {
+        long rc;
+        unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
         unsigned long *lbuf = (unsigned long *)buf_ret; /* TODO: alignment? */
-        return plpar_hcall(H_GET_TERM_CHAR, termno, 0, 0, 0, len_ret,
-                        lbuf + 0, lbuf + 1);
+
+        rc = plpar_hcall(H_GET_TERM_CHAR, retbuf, termno);
+
+        *len_ret = retbuf[0];
+        lbuf[0] = retbuf[1];
+        lbuf[1] = retbuf[2];
+
+        return rc;
 }
 
 static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
@@ -107,4 +143,31 @@ static inline long plpar_put_term_char(unsigned long termno, unsigned long len,
                         lbuf[1]);
 }
 
+static inline long plpar_eoi(unsigned long xirr)
+{
+        return plpar_hcall_norets(H_EOI, xirr);
+}
+
+static inline long plpar_cppr(unsigned long cppr)
+{
+        return plpar_hcall_norets(H_CPPR, cppr);
+}
+
+static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
+{
+        return plpar_hcall_norets(H_IPI, servernum, mfrr);
+}
+
+static inline long plpar_xirr(unsigned long *xirr_ret)
+{
+        long rc;
+        unsigned long retbuf[PLPAR_HCALL_BUFSIZE];
+
+        rc = plpar_hcall(H_XIRR, retbuf);
+
+        *xirr_ret = retbuf[0];
+
+        return rc;
+}
+
 #endif /* _PSERIES_PLPAR_WRAPPERS_H */
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 1eab4688be17..c88ec63129f3 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -34,6 +34,7 @@
 #include <asm/i8259.h>
 
 #include "xics.h"
+#include "plpar_wrappers.h"
 
 #define XICS_IPI                2
 #define XICS_IRQ_SPURIOUS       0
@@ -110,27 +111,6 @@ static inline void direct_qirr_info(int n_cpu, u8 value)
 /* LPAR low level accessors */
 
 
-static inline long plpar_eoi(unsigned long xirr)
-{
-        return plpar_hcall_norets(H_EOI, xirr);
-}
-
-static inline long plpar_cppr(unsigned long cppr)
-{
-        return plpar_hcall_norets(H_CPPR, cppr);
-}
-
-static inline long plpar_ipi(unsigned long servernum, unsigned long mfrr)
-{
-        return plpar_hcall_norets(H_IPI, servernum, mfrr);
-}
-
-static inline long plpar_xirr(unsigned long *xirr_ret)
-{
-        unsigned long dummy;
-        return plpar_hcall(H_XIRR, 0, 0, 0, 0, xirr_ret, &dummy, &dummy);
-}
-
 static inline unsigned int lpar_xirr_info_get(int n_cpu)
 {
         unsigned long lpar_rc;
diff --git a/drivers/net/ibmveth.c b/drivers/net/ibmveth.c
index 0464e78f733a..e56eac88b809 100644
--- a/drivers/net/ibmveth.c
+++ b/drivers/net/ibmveth.c
@@ -702,7 +702,8 @@ static int ibmveth_start_xmit(struct sk_buff *skb, struct net_device *netdev)
                                              desc[3].desc,
                                              desc[4].desc,
                                              desc[5].desc,
-                                             correlator);
+                                             correlator,
+                                             &correlator);
         } while ((lpar_rc == H_BUSY) && (retry_count--));
 
         if(lpar_rc != H_SUCCESS && lpar_rc != H_DROPPED) {
diff --git a/drivers/net/ibmveth.h b/drivers/net/ibmveth.h
index 149191cef2f0..f5b25bff1540 100644
--- a/drivers/net/ibmveth.h
+++ b/drivers/net/ibmveth.h
@@ -51,8 +51,21 @@
 #define h_add_logical_lan_buffer(ua, buf) \
   plpar_hcall_norets(H_ADD_LOGICAL_LAN_BUFFER, ua, buf)
 
-#define h_send_logical_lan(ua, buf1, buf2, buf3, buf4, buf5, buf6, correlator) \
-  plpar_hcall_8arg_2ret(H_SEND_LOGICAL_LAN, ua, buf1, buf2, buf3, buf4, buf5, buf6, correlator, &correlator)
+static inline long h_send_logical_lan(unsigned long unit_address,
+                unsigned long desc1, unsigned long desc2, unsigned long desc3,
+                unsigned long desc4, unsigned long desc5, unsigned long desc6,
+                unsigned long corellator_in, unsigned long *corellator_out)
+{
+        long rc;
+        unsigned long retbuf[PLPAR_HCALL9_BUFSIZE];
+
+        rc = plpar_hcall9(H_SEND_LOGICAL_LAN, retbuf, unit_address, desc1,
+                        desc2, desc3, desc4, desc5, desc6, corellator_in);
+
+        *corellator_out = retbuf[0];
+
+        return rc;
+}
 
 #define h_multicast_ctrl(ua, cmd, mac) \
   plpar_hcall_norets(H_MULTICAST_CTRL, ua, cmd, mac)
diff --git a/include/asm-powerpc/hvcall.h b/include/asm-powerpc/hvcall.h
index f07ae50cbc2c..63ce1ac8c1f4 100644
--- a/include/asm-powerpc/hvcall.h
+++ b/include/asm-powerpc/hvcall.h
@@ -212,94 +212,39 @@
 
 #ifndef __ASSEMBLY__
 
-/* plpar_hcall() -- Generic call interface using above opcodes
+/**
+ * plpar_hcall_norets: - Make a pseries hypervisor call with no return arguments
+ * @opcode: The hypervisor call to make.
  *
- * The actual call interface is a hypervisor call instruction with
- * the opcode in R3 and input args in R4-R7.
- * Status is returned in R3 with variable output values in R4-R11.
- * Only H_PTE_READ with H_READ_4 uses R6-R11 so we ignore it for now
- * and return only two out args which MUST ALWAYS BE PROVIDED.
- */
-long plpar_hcall(unsigned long opcode,
-                 unsigned long arg1,
-                 unsigned long arg2,
-                 unsigned long arg3,
-                 unsigned long arg4,
-                 unsigned long *out1,
-                 unsigned long *out2,
-                 unsigned long *out3);
-
-/* Same as plpar_hcall but for those opcodes that return no values
- * other than status.  Slightly more efficient.
+ * This call supports up to 7 arguments and only returns the status of
+ * the hcall. Use this version where possible, its slightly faster than
+ * the other plpar_hcalls.
  */
 long plpar_hcall_norets(unsigned long opcode, ...);
 
-/*
- * Special hcall interface for ibmveth support.
- * Takes 8 input parms. Returns a rc and stores the
- * R4 return value in *out1.
- */
-long plpar_hcall_8arg_2ret(unsigned long opcode,
-                           unsigned long arg1,
-                           unsigned long arg2,
-                           unsigned long arg3,
-                           unsigned long arg4,
-                           unsigned long arg5,
-                           unsigned long arg6,
-                           unsigned long arg7,
-                           unsigned long arg8,
-                           unsigned long *out1);
-
-/* plpar_hcall_4out()
+/**
+ * plpar_hcall: - Make a pseries hypervisor call
+ * @opcode: The hypervisor call to make.
+ * @retbuf: Buffer to store up to 4 return arguments in.
  *
- * same as plpar_hcall except with 4 output arguments.
+ * This call supports up to 6 arguments and 4 return arguments. Use
+ * PLPAR_HCALL_BUFSIZE to size the return argument buffer.
  *
+ * Used for all but the craziest of phyp interfaces (see plpar_hcall9)
  */
-long plpar_hcall_4out(unsigned long opcode,
-                      unsigned long arg1,
-                      unsigned long arg2,
-                      unsigned long arg3,
-                      unsigned long arg4,
-                      unsigned long *out1,
-                      unsigned long *out2,
-                      unsigned long *out3,
-                      unsigned long *out4);
+#define PLPAR_HCALL_BUFSIZE 4
+long plpar_hcall(unsigned long opcode, unsigned long *retbuf, ...);
 
-long plpar_hcall_7arg_7ret(unsigned long opcode,
-                           unsigned long arg1,
-                           unsigned long arg2,
-                           unsigned long arg3,
-                           unsigned long arg4,
-                           unsigned long arg5,
-                           unsigned long arg6,
-                           unsigned long arg7,
-                           unsigned long *out1,
-                           unsigned long *out2,
-                           unsigned long *out3,
-                           unsigned long *out4,
-                           unsigned long *out5,
-                           unsigned long *out6,
-                           unsigned long *out7);
-
-long plpar_hcall_9arg_9ret(unsigned long opcode,
-                           unsigned long arg1,
-                           unsigned long arg2,
-                           unsigned long arg3,
-                           unsigned long arg4,
-                           unsigned long arg5,
-                           unsigned long arg6,
-                           unsigned long arg7,
-                           unsigned long arg8,
-                           unsigned long arg9,
-                           unsigned long *out1,
-                           unsigned long *out2,
-                           unsigned long *out3,
-                           unsigned long *out4,
-                           unsigned long *out5,
-                           unsigned long *out6,
-                           unsigned long *out7,
-                           unsigned long *out8,
-                           unsigned long *out9);
+/**
+ * plpar_hcall9: - Make a pseries hypervisor call with up to 9 return arguments
+ * @opcode: The hypervisor call to make.
+ * @retbuf: Buffer to store up to 9 return arguments in.
+ *
+ * This call supports up to 9 arguments and 9 return arguments. Use
+ * PLPAR_HCALL9_BUFSIZE to size the return argument buffer.
+ */
+#define PLPAR_HCALL9_BUFSIZE 9
+long plpar_hcall9(unsigned long opcode, unsigned long *retbuf, ...);
 
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */