[SPARC64]: Fill holes in hypervisor APIs and fix KTSB registry.

Several interfaces were missing and others misnumbered or
improperly documented.

Also, make sure to check the return value when registering
the kernel TSBs with the hypervisor.  This helped to find
the 4MB kernel TSB alignment bug fixed in a previous changeset.
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/time.c

@@ -680,22 +680,14 @@ static int starfire_set_time(u32 val)
 
 static u32 hypervisor_get_time(void)
 {
-	register unsigned long func asm("%o5");
-	register unsigned long arg0 asm("%o0");
-	register unsigned long arg1 asm("%o1");
+	unsigned long ret, time;
 	int retries = 10000;
 
 retry:
-	func = HV_FAST_TOD_GET;
-	arg0 = 0;
-	arg1 = 0;
-	__asm__ __volatile__("ta	%6"
-			     : "=&r" (func), "=&r" (arg0), "=&r" (arg1)
-			     : "0" (func), "1" (arg0), "2" (arg1),
-			       "i" (HV_FAST_TRAP));
-	if (arg0 == HV_EOK)
-		return arg1;
-	if (arg0 == HV_EWOULDBLOCK) {
+	ret = sun4v_tod_get(&time);
+	if (ret == HV_EOK)
+		return time;
+	if (ret == HV_EWOULDBLOCK) {
 		if (--retries > 0) {
 			udelay(100);
 			goto retry;
@@ -709,20 +701,14 @@ static u32 hypervisor_get_time(void)
 
 static int hypervisor_set_time(u32 secs)
 {
-	register unsigned long func asm("%o5");
-	register unsigned long arg0 asm("%o0");
+	unsigned long ret;
 	int retries = 10000;
 
 retry:
-	func = HV_FAST_TOD_SET;
-	arg0 = secs;
-	__asm__ __volatile__("ta	%4"
-			     : "=&r" (func), "=&r" (arg0)
-			     : "0" (func), "1" (arg0),
-			       "i" (HV_FAST_TRAP));
-	if (arg0 == HV_EOK)
+	ret = sun4v_tod_set(secs);
+	if (ret == HV_EOK)
 		return 0;
-	if (arg0 == HV_EWOULDBLOCK) {
+	if (ret == HV_EWOULDBLOCK) {
 		if (--retries > 0) {
 			udelay(100);
 			goto retry;

arch/sparc64/mm/init.c

@@ -558,26 +558,11 @@ static void __init hypervisor_tlb_lock(unsigned long vaddr,
 				       unsigned long pte,
 				       unsigned long mmu)
 {
-	register unsigned long func asm("%o5");
-	register unsigned long arg0 asm("%o0");
-	register unsigned long arg1 asm("%o1");
-	register unsigned long arg2 asm("%o2");
-	register unsigned long arg3 asm("%o3");
-
-	func = HV_FAST_MMU_MAP_PERM_ADDR;
-	arg0 = vaddr;
-	arg1 = 0;
-	arg2 = pte;
-	arg3 = mmu;
-	__asm__ __volatile__("ta	0x80"
-			     : "=&r" (func), "=&r" (arg0),
-			       "=&r" (arg1), "=&r" (arg2),
-			       "=&r" (arg3)
-			     : "0" (func), "1" (arg0), "2" (arg1),
-			       "3" (arg2), "4" (arg3));
-	if (arg0 != 0) {
+	unsigned long ret = sun4v_mmu_map_perm_addr(vaddr, 0, pte, mmu);
+
+	if (ret != 0) {
 		prom_printf("hypervisor_tlb_lock[%lx:%lx:%lx:%lx]: "
-			    "errors with %lx\n", vaddr, 0, pte, mmu, arg0);
+			    "errors with %lx\n", vaddr, 0, pte, mmu, ret);
 		prom_halt();
 	}
 }
@@ -1314,20 +1299,16 @@ static void __init sun4v_ktsb_init(void)
 
 void __cpuinit sun4v_ktsb_register(void)
 {
-	register unsigned long func asm("%o5");
-	register unsigned long arg0 asm("%o0");
-	register unsigned long arg1 asm("%o1");
-	unsigned long pa;
+	unsigned long pa, ret;
 
 	pa = kern_base + ((unsigned long)&ktsb_descr[0] - KERNBASE);
 
-	func = HV_FAST_MMU_TSB_CTX0;
-	arg0 = NUM_KTSB_DESCR;
-	arg1 = pa;
-	__asm__ __volatile__("ta	%6"
-			     : "=&r" (func), "=&r" (arg0), "=&r" (arg1)
-			     : "0" (func), "1" (arg0), "2" (arg1),
-			       "i" (HV_FAST_TRAP));
+	ret = sun4v_mmu_tsb_ctx0(NUM_KTSB_DESCR, pa);
+	if (ret != 0) {
+		prom_printf("hypervisor_mmu_tsb_ctx0[%lx]: "
+			    "errors with %lx\n", pa, ret);
+		prom_halt();
+	}
 }
 
 /* paging_init() sets up the page tables */