[SPARC64]: SUN4V memory exception trap handlers.

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

1 files changed, 34 insertions, 11 deletions

diff --git a/arch/sparc64/kernel/unaligned.c b/arch/sparc64/kernel/unaligned.c
index 70faf630603b..001e8518331f 100644
--- a/arch/sparc64/kernel/unaligned.c
+++ b/arch/sparc64/kernel/unaligned.c
@@ -277,7 +277,7 @@ static void kernel_mna_trap_fault(void)
         regs->tstate |= (ASI_AIUS << 24UL);
 }
 
-asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn, unsigned long sfar, unsigned long sfsr)
+asmlinkage void kernel_unaligned_trap(struct pt_regs *regs, unsigned int insn)
 {
         enum direction dir = decode_direction(insn);
         int size = decode_access_size(insn);
@@ -405,6 +405,9 @@ extern void do_privact(struct pt_regs *regs);
 extern void spitfire_data_access_exception(struct pt_regs *regs,
                                            unsigned long sfsr,
                                            unsigned long sfar);
+extern void sun4v_data_access_exception(struct pt_regs *regs,
+                                        unsigned long addr,
+                                        unsigned long type_ctx);
 
 int handle_ldf_stq(u32 insn, struct pt_regs *regs)
 {
@@ -447,14 +450,20 @@ int handle_ldf_stq(u32 insn, struct pt_regs *regs)
                                 break;
                         }
                 default:
-                        spitfire_data_access_exception(regs, 0, addr);
+                        if (tlb_type == hypervisor)
+                                sun4v_data_access_exception(regs, addr, 0);
+                        else
+                                spitfire_data_access_exception(regs, 0, addr);
                         return 1;
                 }
                 if (put_user (first >> 32, (u32 __user *)addr) ||
                     __put_user ((u32)first, (u32 __user *)(addr + 4)) ||
                     __put_user (second >> 32, (u32 __user *)(addr + 8)) ||
                     __put_user ((u32)second, (u32 __user *)(addr + 12))) {
-                        spitfire_data_access_exception(regs, 0, addr);
+                        if (tlb_type == hypervisor)
+                                sun4v_data_access_exception(regs, addr, 0);
+                        else
+                                spitfire_data_access_exception(regs, 0, addr);
                         return 1;
                 }
         } else {
@@ -467,7 +476,10 @@ int handle_ldf_stq(u32 insn, struct pt_regs *regs)
                         do_privact(regs);
                         return 1;
                 } else if (asi > ASI_SNFL) {
-                        spitfire_data_access_exception(regs, 0, addr);
+                        if (tlb_type == hypervisor)
+                                sun4v_data_access_exception(regs, addr, 0);
+                        else
+                                spitfire_data_access_exception(regs, 0, addr);
                         return 1;
                 }
                 switch (insn & 0x180000) {
@@ -484,7 +496,10 @@ int handle_ldf_stq(u32 insn, struct pt_regs *regs)
                                 err |= __get_user (data[i], (u32 __user *)(addr + 4*i));
                 }
                 if (err && !(asi & 0x2 /* NF */)) {
-                        spitfire_data_access_exception(regs, 0, addr);
+                        if (tlb_type == hypervisor)
+                                sun4v_data_access_exception(regs, addr, 0);
+                        else
+                                spitfire_data_access_exception(regs, 0, addr);
                         return 1;
                 }
                 if (asi & 0x8) /* Little */ {
@@ -548,7 +563,7 @@ void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
         u32 insn;
         u32 first, second;
         u64 value;
-        u8 asi, freg;
+        u8 freg;
         int flag;
         struct fpustate *f = FPUSTATE;
 
@@ -557,7 +572,7 @@ void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
         if (test_thread_flag(TIF_32BIT))
                 pc = (u32)pc;
         if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
-                asi = sfsr >> 16;
+                int asi = decode_asi(insn, regs);
                 if ((asi > ASI_SNFL) ||
                     (asi < ASI_P))
                         goto daex;
@@ -587,7 +602,11 @@ void handle_lddfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
                 *(u64 *)(f->regs + freg) = value;
                 current_thread_info()->fpsaved[0] |= flag;
         } else {
-daex:           spitfire_data_access_exception(regs, sfsr, sfar);
+daex:
+                if (tlb_type == hypervisor)
+                        sun4v_data_access_exception(regs, sfar, sfsr);
+                else
+                        spitfire_data_access_exception(regs, sfsr, sfar);
                 return;
         }
         advance(regs);
@@ -600,7 +619,7 @@ void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
         unsigned long tstate = regs->tstate;
         u32 insn;
         u64 value;
-        u8 asi, freg;
+        u8 freg;
         int flag;
         struct fpustate *f = FPUSTATE;
 
@@ -609,8 +628,8 @@ void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
         if (test_thread_flag(TIF_32BIT))
                 pc = (u32)pc;
         if (get_user(insn, (u32 __user *) pc) != -EFAULT) {
+                int asi = decode_asi(insn, regs);
                 freg = ((insn >> 25) & 0x1e) | ((insn >> 20) & 0x20);
-                asi = sfsr >> 16;
                 value = 0;
                 flag = (freg < 32) ? FPRS_DL : FPRS_DU;
                 if ((asi > ASI_SNFL) ||
@@ -631,7 +650,11 @@ void handle_stdfmna(struct pt_regs *regs, unsigned long sfar, unsigned long sfsr
                     __put_user ((u32)value, (u32 __user *)(sfar + 4)))
                         goto daex;
         } else {
-daex:           spitfire_data_access_exception(regs, sfsr, sfar);
+daex:
+                if (tlb_type == hypervisor)
+                        sun4v_data_access_exception(regs, sfar, sfsr);
+                else
+                        spitfire_data_access_exception(regs, sfsr, sfar);
                 return;
         }
         advance(regs);