Revert "MIPS: microMIPS: Support dynamic ASID sizing."

This reverts commit f6b06d9361a008afb93b97fb3683a6e92d69d0f4.

The next revert depends on this one, so this has to go too.

Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: "Steven J. Hill" <Steven.Hill@imgtec.com>
Cc: David Daney <david.daney@cavium.com>
Patchwork: https://patchwork.linux-mips.org/patch/5241/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 2 insertions, 32 deletions

diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index 4d46d3787576..2ad41e94394e 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -309,32 +309,13 @@ static int check_for_high_segbits __cpuinitdata;
 static void __cpuinit insn_fixup(unsigned int **start, unsigned int **stop,
                                         unsigned int i_const)
 {
-        unsigned int **p;
+        unsigned int **p, *ip;
 
         for (p = start; p < stop; p++) {
-#ifndef CONFIG_CPU_MICROMIPS
-                unsigned int *ip;
-
                 ip = *p;
                 *ip = (*ip & 0xffff0000) | i_const;
-#else
-                unsigned short *ip;
-
-                ip = ((unsigned short *)((unsigned int)*p - 1));
-                if ((*ip & 0xf000) == 0x4000) {
-                        *ip &= 0xfff1;
-                        *ip |= (i_const << 1);
-                } else if ((*ip & 0xf000) == 0x6000) {
-                        *ip &= 0xfff1;
-                        *ip |= ((i_const >> 2) << 1);
-                } else {
-                        ip++;
-                        *ip = i_const;
-                }
-#endif
-                local_flush_icache_range((unsigned long)ip,
-                                         (unsigned long)ip + sizeof(*ip));
         }
+        local_flush_icache_range((unsigned long)*p, (unsigned long)((*p) + 1));
 }
 
 #define asid_insn_fixup(section, const)                                 \
@@ -354,14 +335,6 @@ static void __cpuinit setup_asid(unsigned int inc, unsigned int mask,
         extern asmlinkage void handle_ri_rdhwr_vivt(void);
         unsigned long *vivt_exc;
 
-#ifdef CONFIG_CPU_MICROMIPS
-        /*
-         * Worst case optimised microMIPS addiu instructions support
-         * only a 3-bit immediate value.
-         */
-        if(inc > 7)
-                panic("Invalid ASID increment value!");
-#endif
         asid_insn_fixup(__asid_inc, inc);
         asid_insn_fixup(__asid_mask, mask);
         asid_insn_fixup(__asid_version_mask, version_mask);
@@ -369,9 +342,6 @@ static void __cpuinit setup_asid(unsigned int inc, unsigned int mask,
 
         /* Patch up the 'handle_ri_rdhwr_vivt' handler. */
         vivt_exc = (unsigned long *) &handle_ri_rdhwr_vivt;
-#ifdef CONFIG_CPU_MICROMIPS
-        vivt_exc = (unsigned long *)((unsigned long) vivt_exc - 1);
-#endif
         vivt_exc++;
         *vivt_exc = (*vivt_exc & ~mask) | mask;