[SPARC64]: Add sun4v_cpu_qconf() hypervisor call.

Call it from register_one_mondo().

Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 25 insertions, 19 deletions

diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index bf40b065bcc0..f5c8a293979f 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -1772,3 +1772,15 @@ sun4v_intr_settarget:
         retl
          nop
 
+        /* %o0: type
+         * %o1: queue paddr
+         * %o2: num queue entries
+         *
+         * returns %o0: status
+         */
+        .globl  sun4v_cpu_qconf
+sun4v_cpu_qconf:
+        mov     HV_FAST_CPU_QCONF, %o5
+        ta      HV_FAST_TRAP
+        retl
+         nop
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index 4d9931d124ab..e1729e5189a3 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -939,25 +939,13 @@ void init_irqwork_curcpu(void)
 
 static void __cpuinit register_one_mondo(unsigned long paddr, unsigned long type)
 {
-        register unsigned long func __asm__("%o5");
-        register unsigned long arg0 __asm__("%o0");
-        register unsigned long arg1 __asm__("%o1");
-        register unsigned long arg2 __asm__("%o2");
-
-        func = HV_FAST_CPU_QCONF;
-        arg0 = type;
-        arg1 = paddr;
-        arg2 = 128; /* XXX Implied by Niagara queue offsets. XXX */
-        __asm__ __volatile__("ta        %8"
-                             : "=&r" (func), "=&r" (arg0),
-                               "=&r" (arg1), "=&r" (arg2)
-                             : "0" (func), "1" (arg0),
-                               "2" (arg1), "3" (arg2),
-                               "i" (HV_FAST_TRAP));
-
-        if (arg0 != HV_EOK) {
-                prom_printf("SUN4V: cpu_qconf(%lu) failed with error %lu\n",
-                            type, func);
+        unsigned long num_entries = 128;
+        unsigned long status;
+
+        status = sun4v_cpu_qconf(type, paddr, num_entries);
+        if (status != HV_EOK) {
+                prom_printf("SUN4V: sun4v_cpu_qconf(%lu:%lx:%lu) failed, "
+                            "err %lu\n", type, paddr, num_entries, status);
                 prom_halt();
         }
 }
diff --git a/include/asm-sparc64/hypervisor.h b/include/asm-sparc64/hypervisor.h
index f14992ab7fec..cd5fbcd9556e 100644
--- a/include/asm-sparc64/hypervisor.h
+++ b/include/asm-sparc64/hypervisor.h
@@ -301,6 +301,12 @@
 #define  HV_CPU_QUEUE_RES_ERROR          0x3e
 #define  HV_CPU_QUEUE_NONRES_ERROR       0x3f
 
+#ifndef __ASSEMBLY__
+extern unsigned long sun4v_cpu_qconf(unsigned long type,
+                                     unsigned long queue_paddr,
+                                     unsigned long num_queue_entries);
+#endif
+
 /* cpu_qinfo()
  * TRAP:        HV_FAST_TRAP
  * FUNCTION:    HV_FAST_CPU_QINFO