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From 8ea6cd7af124ad070b44a7f60e225e45e3f38f79 Mon Sep 17 00:00:00 2001
From: David Daney <david.daney@cavium.com>
Date: Mon, 13 May 2013 13:56:43 -0700
Subject: [PATCH 1/3] 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>
---
arch/mips/mm/tlbex.c | 34 ++--------------------------------
1 file changed, 2 insertions(+), 32 deletions(-)
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -309,32 +309,13 @@ static int check_for_high_segbits __cpui
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(unsigne
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(unsigne
/* 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;
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