Merge ../linux-2.6-watchdog-mm

[linux-drm-fsl-dcu.git] / arch / mips / mm / pg-r4k.c

diff --git a/arch/mips/mm/pg-r4k.c b/arch/mips/mm/pg-r4k.c
index e4390dc3eb48e29d9b9a950d5a020d27af32676e..d41fc5885e875f67ec9de7cf3fc2057b6c7c2419 100644 (file)
--- a/arch/mips/mm/pg-r4k.c
+++ b/arch/mips/mm/pg-r4k.c
@@ -270,6 +270,20 @@ static inline void build_addiu_a2_a0(unsigned long offset)
        emit_instruction(mi);
 }
 
+static inline void build_addiu_a2(unsigned long offset)
+{
+       union mips_instruction mi;
+
+       BUG_ON(offset > 0x7fff);
+
+       mi.i_format.opcode     = cpu_has_64bit_gp_regs ? daddiu_op : addiu_op;
+       mi.i_format.rs         = 6;             /* $a2 */
+       mi.i_format.rt         = 6;             /* $a2 */
+       mi.i_format.simmediate = offset;
+
+       emit_instruction(mi);
+}
+
 static inline void build_addiu_a1(unsigned long offset)
 {
        union mips_instruction mi;
@@ -333,6 +347,7 @@ static inline void build_jr_ra(void)
 void __init build_clear_page(void)
 {
        unsigned int loop_start;
+       unsigned long off;
 
        epc = (unsigned int *) &clear_page_array;
        instruction_pending = 0;
@@ -357,6 +372,7 @@ void __init build_clear_page(void)
 
                case CPU_R10000:
                case CPU_R12000:
+               case CPU_R14000:
                        pref_src_mode = Pref_LoadStreamed;
                        pref_dst_mode = Pref_StoreStreamed;
                        break;
@@ -368,7 +384,12 @@ void __init build_clear_page(void)
                }
        }
 
-       build_addiu_a2_a0(PAGE_SIZE - (cpu_has_prefetch ? pref_offset_clear : 0));
+        off = PAGE_SIZE - (cpu_has_prefetch ? pref_offset_clear : 0);
+       if (off > 0x7fff) {
+               build_addiu_a2_a0(off >> 1);
+               build_addiu_a2(off >> 1);
+       } else
+               build_addiu_a2_a0(off);
 
        if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x())
                build_insn_word(0x3c01a000);    /* lui     $at, 0xa000  */
@@ -419,12 +440,18 @@ dest = label();
 void __init build_copy_page(void)
 {
        unsigned int loop_start;
+       unsigned long off;
 
        epc = (unsigned int *) &copy_page_array;
        store_offset = load_offset = 0;
        instruction_pending = 0;
 
-       build_addiu_a2_a0(PAGE_SIZE - (cpu_has_prefetch ? pref_offset_copy : 0));
+       off = PAGE_SIZE - (cpu_has_prefetch ? pref_offset_copy : 0);
+       if (off > 0x7fff) {
+               build_addiu_a2_a0(off >> 1);
+               build_addiu_a2(off >> 1);
+       } else
+               build_addiu_a2_a0(off);
 
        if (R4600_V2_HIT_CACHEOP_WAR && cpu_is_r4600_v2_x())
                build_insn_word(0x3c01a000);    /* lui     $at, 0xa000  */