[SPARC64]: Add some hypervisor tlb_type checks.

And more consistently check cheetah{,_plus} instead
of assuming anything not spitfire is cheetah{,_plus}.

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

2 files changed, 30 insertions, 8 deletions

diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 16b8eca9754e..aba0f886b05b 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -528,6 +528,11 @@ retry:
         }
 }
 
+static void hypervisor_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t mask)
+{
+        /* XXX implement me */
+}
+
 /* Send cross call to all processors mentioned in MASK
  * except self.
  */
@@ -541,8 +546,10 @@ static void smp_cross_call_masked(unsigned long *func, u32 ctx, u64 data1, u64 d
 
         if (tlb_type == spitfire)
                 spitfire_xcall_deliver(data0, data1, data2, mask);
-        else
+        else if (tlb_type == cheetah || tlb_type == cheetah_plus)
                 cheetah_xcall_deliver(data0, data1, data2, mask);
+        else
+                hypervisor_xcall_deliver(data0, data1, data2, mask);
         /* NOTE: Caller runs local copy on master. */
 
         put_cpu();
@@ -695,11 +702,17 @@ static __inline__ void __local_flush_dcache_page(struct page *page)
 void smp_flush_dcache_page_impl(struct page *page, int cpu)
 {
         cpumask_t mask = cpumask_of_cpu(cpu);
-        int this_cpu = get_cpu();
+        int this_cpu;
+
+        if (tlb_type == hypervisor)
+                return;
 
 #ifdef CONFIG_DEBUG_DCFLUSH
         atomic_inc(&dcpage_flushes);
 #endif
+
+        this_cpu = get_cpu();
+
         if (cpu == this_cpu) {
                 __local_flush_dcache_page(page);
         } else if (cpu_online(cpu)) {
@@ -715,7 +728,7 @@ void smp_flush_dcache_page_impl(struct page *page, int cpu)
                                                __pa(pg_addr),
                                                (u64) pg_addr,
                                                mask);
-                } else {
+                } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
 #ifdef DCACHE_ALIASING_POSSIBLE
                         data0 =
                                 ((u64)&xcall_flush_dcache_page_cheetah);
@@ -737,7 +750,12 @@ void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
         void *pg_addr = page_address(page);
         cpumask_t mask = cpu_online_map;
         u64 data0;
-        int this_cpu = get_cpu();
+        int this_cpu;
+
+        if (tlb_type == hypervisor)
+                return;
+
+        this_cpu = get_cpu();
 
         cpu_clear(this_cpu, mask);
 
@@ -754,7 +772,7 @@ void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
                                        __pa(pg_addr),
                                        (u64) pg_addr,
                                        mask);
-        } else {
+        } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
 #ifdef DCACHE_ALIASING_POSSIBLE
                 data0 = ((u64)&xcall_flush_dcache_page_cheetah);
                 cheetah_xcall_deliver(data0,
@@ -780,8 +798,10 @@ void smp_receive_signal(int cpu)
 
                 if (tlb_type == spitfire)
                         spitfire_xcall_deliver(data0, 0, 0, mask);
-                else
+                else if (tlb_type == cheetah || tlb_type == cheetah_plus)
                         cheetah_xcall_deliver(data0, 0, 0, mask);
+                else if (tlb_type == hypervisor)
+                        hypervisor_xcall_deliver(data0, 0, 0, mask);
         }
 }
 
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index 1af63307b24f..ab50cd9618f3 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -335,7 +335,7 @@ out:
 
 void __kprobes flush_icache_range(unsigned long start, unsigned long end)
 {
-        /* Cheetah has coherent I-cache. */
+        /* Cheetah and Hypervisor platform cpus have coherent I-cache. */
         if (tlb_type == spitfire) {
                 unsigned long kaddr;
 
@@ -372,6 +372,8 @@ void mmu_info(struct seq_file *m)
                 seq_printf(m, "MMU Type\t: Cheetah+\n");
         else if (tlb_type == spitfire)
                 seq_printf(m, "MMU Type\t: Spitfire\n");
+        else if (tlb_type == hypervisor)
+                seq_printf(m, "MMU Type\t: Hypervisor (sun4v)\n");
         else
                 seq_printf(m, "MMU Type\t: ???\n");
 
@@ -581,7 +583,7 @@ void __flush_dcache_range(unsigned long start, unsigned long end)
                         if (++n >= 512)
                                 break;
                 }
-        } else {
+        } else if (tlb_type == cheetah || tlb_type == cheetah_plus) {
                 start = __pa(start);
                 end = __pa(end);
                 for (va = start; va < end; va += 32)