From 2aa9fd06e221da4e69693dc1b5c6c6bc84c76f32 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <sjhill@mips.com>
Date: Tue, 5 Feb 2013 16:52:00 -0600
Subject: MIPS: microMIPS: Add instruction formats.

Add structures for all the microMIPS instructions. Also add the
enumerations for all the bit fields for opcodes, functions, etc.

Signed-off-by: Steven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Cc: kevink@paralogos.com
Cc: ddaney.cavm@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/4921/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
(cherry picked from commit d7f19e43a4337d4d40ff5e241172912130d06a4c)
---
 arch/mips/include/uapi/asm/inst.h | 449 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 449 insertions(+)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h
index 4d078815eaa5..471533778a69 100644
--- a/arch/mips/include/uapi/asm/inst.h
+++ b/arch/mips/include/uapi/asm/inst.h
@@ -7,6 +7,7 @@
  *
  * Copyright (C) 1996, 2000 by Ralf Baechle
  * Copyright (C) 2006 by Thiemo Seufer
+ * Copyright (C) 2012 MIPS Technologies, Inc.  All rights reserved.
  */
 #ifndef _UAPI_ASM_INST_H
 #define _UAPI_ASM_INST_H
@@ -192,6 +193,236 @@ enum lx_func {
 	lbx_op	= 0x16,
 };
 
+/*
+ * (microMIPS) Major opcodes.
+ */
+enum mm_major_op {
+	mm_pool32a_op, mm_pool16a_op, mm_lbu16_op, mm_move16_op,
+	mm_addi32_op, mm_lbu32_op, mm_sb32_op, mm_lb32_op,
+	mm_pool32b_op, mm_pool16b_op, mm_lhu16_op, mm_andi16_op,
+	mm_addiu32_op, mm_lhu32_op, mm_sh32_op, mm_lh32_op,
+	mm_pool32i_op, mm_pool16c_op, mm_lwsp16_op, mm_pool16d_op,
+	mm_ori32_op, mm_pool32f_op, mm_reserved1_op, mm_reserved2_op,
+	mm_pool32c_op, mm_lwgp16_op, mm_lw16_op, mm_pool16e_op,
+	mm_xori32_op, mm_jals32_op, mm_addiupc_op, mm_reserved3_op,
+	mm_reserved4_op, mm_pool16f_op, mm_sb16_op, mm_beqz16_op,
+	mm_slti32_op, mm_beq32_op, mm_swc132_op, mm_lwc132_op,
+	mm_reserved5_op, mm_reserved6_op, mm_sh16_op, mm_bnez16_op,
+	mm_sltiu32_op, mm_bne32_op, mm_sdc132_op, mm_ldc132_op,
+	mm_reserved7_op, mm_reserved8_op, mm_swsp16_op, mm_b16_op,
+	mm_andi32_op, mm_j32_op, mm_sd32_op, mm_ld32_op,
+	mm_reserved11_op, mm_reserved12_op, mm_sw16_op, mm_li16_op,
+	mm_jalx32_op, mm_jal32_op, mm_sw32_op, mm_lw32_op,
+};
+
+/*
+ * (microMIPS) POOL32I minor opcodes.
+ */
+enum mm_32i_minor_op {
+	mm_bltz_op, mm_bltzal_op, mm_bgez_op, mm_bgezal_op,
+	mm_blez_op, mm_bnezc_op, mm_bgtz_op, mm_beqzc_op,
+	mm_tlti_op, mm_tgei_op, mm_tltiu_op, mm_tgeiu_op,
+	mm_tnei_op, mm_lui_op, mm_teqi_op, mm_reserved13_op,
+	mm_synci_op, mm_bltzals_op, mm_reserved14_op, mm_bgezals_op,
+	mm_bc2f_op, mm_bc2t_op, mm_reserved15_op, mm_reserved16_op,
+	mm_reserved17_op, mm_reserved18_op, mm_bposge64_op, mm_bposge32_op,
+	mm_bc1f_op, mm_bc1t_op, mm_reserved19_op, mm_reserved20_op,
+	mm_bc1any2f_op, mm_bc1any2t_op, mm_bc1any4f_op, mm_bc1any4t_op,
+};
+
+/*
+ * (microMIPS) POOL32A minor opcodes.
+ */
+enum mm_32a_minor_op {
+	mm_sll32_op = 0x000,
+	mm_ins_op = 0x00c,
+	mm_ext_op = 0x02c,
+	mm_pool32axf_op = 0x03c,
+	mm_srl32_op = 0x040,
+	mm_sra_op = 0x080,
+	mm_rotr_op = 0x0c0,
+	mm_lwxs_op = 0x118,
+	mm_addu32_op = 0x150,
+	mm_subu32_op = 0x1d0,
+	mm_and_op = 0x250,
+	mm_or32_op = 0x290,
+	mm_xor32_op = 0x310,
+};
+
+/*
+ * (microMIPS) POOL32B functions.
+ */
+enum mm_32b_func {
+	mm_lwc2_func = 0x0,
+	mm_lwp_func = 0x1,
+	mm_ldc2_func = 0x2,
+	mm_ldp_func = 0x4,
+	mm_lwm32_func = 0x5,
+	mm_cache_func = 0x6,
+	mm_ldm_func = 0x7,
+	mm_swc2_func = 0x8,
+	mm_swp_func = 0x9,
+	mm_sdc2_func = 0xa,
+	mm_sdp_func = 0xc,
+	mm_swm32_func = 0xd,
+	mm_sdm_func = 0xf,
+};
+
+/*
+ * (microMIPS) POOL32C functions.
+ */
+enum mm_32c_func {
+	mm_pref_func = 0x2,
+	mm_ll_func = 0x3,
+	mm_swr_func = 0x9,
+	mm_sc_func = 0xb,
+	mm_lwu_func = 0xe,
+};
+
+/*
+ * (microMIPS) POOL32AXF minor opcodes.
+ */
+enum mm_32axf_minor_op {
+	mm_mfc0_op = 0x003,
+	mm_mtc0_op = 0x00b,
+	mm_tlbp_op = 0x00d,
+	mm_jalr_op = 0x03c,
+	mm_tlbr_op = 0x04d,
+	mm_jalrhb_op = 0x07c,
+	mm_tlbwi_op = 0x08d,
+	mm_tlbwr_op = 0x0cd,
+	mm_jalrs_op = 0x13c,
+	mm_jalrshb_op = 0x17c,
+	mm_syscall_op = 0x22d,
+	mm_eret_op = 0x3cd,
+};
+
+/*
+ * (microMIPS) POOL32F minor opcodes.
+ */
+enum mm_32f_minor_op {
+	mm_32f_00_op = 0x00,
+	mm_32f_01_op = 0x01,
+	mm_32f_02_op = 0x02,
+	mm_32f_10_op = 0x08,
+	mm_32f_11_op = 0x09,
+	mm_32f_12_op = 0x0a,
+	mm_32f_20_op = 0x10,
+	mm_32f_30_op = 0x18,
+	mm_32f_40_op = 0x20,
+	mm_32f_41_op = 0x21,
+	mm_32f_42_op = 0x22,
+	mm_32f_50_op = 0x28,
+	mm_32f_51_op = 0x29,
+	mm_32f_52_op = 0x2a,
+	mm_32f_60_op = 0x30,
+	mm_32f_70_op = 0x38,
+	mm_32f_73_op = 0x3b,
+	mm_32f_74_op = 0x3c,
+};
+
+/*
+ * (microMIPS) POOL32F secondary minor opcodes.
+ */
+enum mm_32f_10_minor_op {
+	mm_lwxc1_op = 0x1,
+	mm_swxc1_op,
+	mm_ldxc1_op,
+	mm_sdxc1_op,
+	mm_luxc1_op,
+	mm_suxc1_op,
+};
+
+enum mm_32f_func {
+	mm_lwxc1_func = 0x048,
+	mm_swxc1_func = 0x088,
+	mm_ldxc1_func = 0x0c8,
+	mm_sdxc1_func = 0x108,
+};
+
+/*
+ * (microMIPS) POOL32F secondary minor opcodes.
+ */
+enum mm_32f_40_minor_op {
+	mm_fmovf_op,
+	mm_fmovt_op,
+};
+
+/*
+ * (microMIPS) POOL32F secondary minor opcodes.
+ */
+enum mm_32f_60_minor_op {
+	mm_fadd_op,
+	mm_fsub_op,
+	mm_fmul_op,
+	mm_fdiv_op,
+};
+
+/*
+ * (microMIPS) POOL32F secondary minor opcodes.
+ */
+enum mm_32f_70_minor_op {
+	mm_fmovn_op,
+	mm_fmovz_op,
+};
+
+/*
+ * (microMIPS) POOL32FXF secondary minor opcodes for POOL32F.
+ */
+enum mm_32f_73_minor_op {
+	mm_fmov0_op = 0x01,
+	mm_fcvtl_op = 0x04,
+	mm_movf0_op = 0x05,
+	mm_frsqrt_op = 0x08,
+	mm_ffloorl_op = 0x0c,
+	mm_fabs0_op = 0x0d,
+	mm_fcvtw_op = 0x24,
+	mm_movt0_op = 0x25,
+	mm_fsqrt_op = 0x28,
+	mm_ffloorw_op = 0x2c,
+	mm_fneg0_op = 0x2d,
+	mm_cfc1_op = 0x40,
+	mm_frecip_op = 0x48,
+	mm_fceill_op = 0x4c,
+	mm_fcvtd0_op = 0x4d,
+	mm_ctc1_op = 0x60,
+	mm_fceilw_op = 0x6c,
+	mm_fcvts0_op = 0x6d,
+	mm_mfc1_op = 0x80,
+	mm_fmov1_op = 0x81,
+	mm_movf1_op = 0x85,
+	mm_ftruncl_op = 0x8c,
+	mm_fabs1_op = 0x8d,
+	mm_mtc1_op = 0xa0,
+	mm_movt1_op = 0xa5,
+	mm_ftruncw_op = 0xac,
+	mm_fneg1_op = 0xad,
+	mm_froundl_op = 0xcc,
+	mm_fcvtd1_op = 0xcd,
+	mm_froundw_op = 0xec,
+	mm_fcvts1_op = 0xed,
+};
+
+/*
+ * (microMIPS) POOL16C minor opcodes.
+ */
+enum mm_16c_minor_op {
+	mm_lwm16_op = 0x04,
+	mm_swm16_op = 0x05,
+	mm_jr16_op = 0x18,
+	mm_jrc_op = 0x1a,
+	mm_jalr16_op = 0x1c,
+	mm_jalrs16_op = 0x1e,
+};
+
+/*
+ * (microMIPS) POOL16D minor opcodes.
+ */
+enum mm_16d_minor_op {
+	mm_addius5_func,
+	mm_addiusp_func,
+};
+
 /*
  * Damn ...  bitfields depend from byteorder :-(
  */
@@ -311,6 +542,204 @@ struct v_format {				/* MDMX vector format */
 	;)))))))
 };
 
+/*
+ * microMIPS instruction formats (32-bit length)
+ *
+ * NOTE:
+ *	Parenthesis denote whether the format is a microMIPS instruction or
+ *	if it is MIPS32 instruction re-encoded for use in the microMIPS ASE.
+ */
+struct fb_format {		/* FPU branch format (MIPS32) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int bc : 5,
+	BITFIELD_FIELD(unsigned int cc : 3,
+	BITFIELD_FIELD(unsigned int flag : 2,
+	BITFIELD_FIELD(signed int simmediate : 16,
+	;)))))
+};
+
+struct fp0_format {		/* FPU multiply and add format (MIPS32) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int fmt : 5,
+	BITFIELD_FIELD(unsigned int ft : 5,
+	BITFIELD_FIELD(unsigned int fs : 5,
+	BITFIELD_FIELD(unsigned int fd : 5,
+	BITFIELD_FIELD(unsigned int func : 6,
+	;))))))
+};
+
+struct mm_fp0_format {		/* FPU multipy and add format (microMIPS) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int ft : 5,
+	BITFIELD_FIELD(unsigned int fs : 5,
+	BITFIELD_FIELD(unsigned int fd : 5,
+	BITFIELD_FIELD(unsigned int fmt : 3,
+	BITFIELD_FIELD(unsigned int op : 2,
+	BITFIELD_FIELD(unsigned int func : 6,
+	;)))))))
+};
+
+struct fp1_format {		/* FPU mfc1 and cfc1 format (MIPS32) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int op : 5,
+	BITFIELD_FIELD(unsigned int rt : 5,
+	BITFIELD_FIELD(unsigned int fs : 5,
+	BITFIELD_FIELD(unsigned int fd : 5,
+	BITFIELD_FIELD(unsigned int func : 6,
+	;))))))
+};
+
+struct mm_fp1_format {		/* FPU mfc1 and cfc1 format (microMIPS) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int rt : 5,
+	BITFIELD_FIELD(unsigned int fs : 5,
+	BITFIELD_FIELD(unsigned int fmt : 2,
+	BITFIELD_FIELD(unsigned int op : 8,
+	BITFIELD_FIELD(unsigned int func : 6,
+	;))))))
+};
+
+struct mm_fp2_format {		/* FPU movt and movf format (microMIPS) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int fd : 5,
+	BITFIELD_FIELD(unsigned int fs : 5,
+	BITFIELD_FIELD(unsigned int cc : 3,
+	BITFIELD_FIELD(unsigned int zero : 2,
+	BITFIELD_FIELD(unsigned int fmt : 2,
+	BITFIELD_FIELD(unsigned int op : 3,
+	BITFIELD_FIELD(unsigned int func : 6,
+	;))))))))
+};
+
+struct mm_fp3_format {		/* FPU abs and neg format (microMIPS) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int rt : 5,
+	BITFIELD_FIELD(unsigned int fs : 5,
+	BITFIELD_FIELD(unsigned int fmt : 3,
+	BITFIELD_FIELD(unsigned int op : 7,
+	BITFIELD_FIELD(unsigned int func : 6,
+	;))))))
+};
+
+struct mm_fp4_format {		/* FPU c.cond format (microMIPS) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int rt : 5,
+	BITFIELD_FIELD(unsigned int fs : 5,
+	BITFIELD_FIELD(unsigned int cc : 3,
+	BITFIELD_FIELD(unsigned int fmt : 3,
+	BITFIELD_FIELD(unsigned int cond : 4,
+	BITFIELD_FIELD(unsigned int func : 6,
+	;)))))))
+};
+
+struct mm_fp5_format {		/* FPU lwxc1 and swxc1 format (microMIPS) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int index : 5,
+	BITFIELD_FIELD(unsigned int base : 5,
+	BITFIELD_FIELD(unsigned int fd : 5,
+	BITFIELD_FIELD(unsigned int op : 5,
+	BITFIELD_FIELD(unsigned int func : 6,
+	;))))))
+};
+
+struct fp6_format {		/* FPU madd and msub format (MIPS IV) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int fr : 5,
+	BITFIELD_FIELD(unsigned int ft : 5,
+	BITFIELD_FIELD(unsigned int fs : 5,
+	BITFIELD_FIELD(unsigned int fd : 5,
+	BITFIELD_FIELD(unsigned int func : 6,
+	;))))))
+};
+
+struct mm_fp6_format {		/* FPU madd and msub format (microMIPS) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int ft : 5,
+	BITFIELD_FIELD(unsigned int fs : 5,
+	BITFIELD_FIELD(unsigned int fd : 5,
+	BITFIELD_FIELD(unsigned int fr : 5,
+	BITFIELD_FIELD(unsigned int func : 6,
+	;))))))
+};
+
+struct mm_i_format {		/* Immediate format (microMIPS) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int rt : 5,
+	BITFIELD_FIELD(unsigned int rs : 5,
+	BITFIELD_FIELD(signed int simmediate : 16,
+	;))))
+};
+
+struct mm_m_format {		/* Multi-word load/store format (microMIPS) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int rd : 5,
+	BITFIELD_FIELD(unsigned int base : 5,
+	BITFIELD_FIELD(unsigned int func : 4,
+	BITFIELD_FIELD(signed int simmediate : 12,
+	;)))))
+};
+
+struct mm_x_format {		/* Scaled indexed load format (microMIPS) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int index : 5,
+	BITFIELD_FIELD(unsigned int base : 5,
+	BITFIELD_FIELD(unsigned int rd : 5,
+	BITFIELD_FIELD(unsigned int func : 11,
+	;)))))
+};
+
+/*
+ * microMIPS instruction formats (16-bit length)
+ */
+struct mm_b0_format {		/* Unconditional branch format (microMIPS) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(signed int simmediate : 10,
+	BITFIELD_FIELD(unsigned int : 16, /* Ignored */
+	;)))
+};
+
+struct mm_b1_format {		/* Conditional branch format (microMIPS) */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int rs : 3,
+	BITFIELD_FIELD(signed int simmediate : 7,
+	BITFIELD_FIELD(unsigned int : 16, /* Ignored */
+	;))))
+};
+
+struct mm16_m_format {		/* Multi-word load/store format */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int func : 4,
+	BITFIELD_FIELD(unsigned int rlist : 2,
+	BITFIELD_FIELD(unsigned int imm : 4,
+	BITFIELD_FIELD(unsigned int : 16, /* Ignored */
+	;)))))
+};
+
+struct mm16_rb_format {		/* Signed immediate format */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int rt : 3,
+	BITFIELD_FIELD(unsigned int base : 3,
+	BITFIELD_FIELD(signed int simmediate : 4,
+	BITFIELD_FIELD(unsigned int : 16, /* Ignored */
+	;)))))
+};
+
+struct mm16_r3_format {		/* Load from global pointer format */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int rt : 3,
+	BITFIELD_FIELD(signed int simmediate : 7,
+	BITFIELD_FIELD(unsigned int : 16, /* Ignored */
+	;))))
+};
+
+struct mm16_r5_format {		/* Load/store from stack pointer format */
+	BITFIELD_FIELD(unsigned int opcode : 6,
+	BITFIELD_FIELD(unsigned int rt : 5,
+	BITFIELD_FIELD(signed int simmediate : 5,
+	BITFIELD_FIELD(unsigned int : 16, /* Ignored */
+	;))))
+};
+
 union mips_instruction {
 	unsigned int word;
 	unsigned short halfword[2];
@@ -326,6 +755,26 @@ union mips_instruction {
 	struct b_format b_format;
 	struct ps_format ps_format;
 	struct v_format v_format;
+	struct fb_format fb_format;
+	struct fp0_format fp0_format;
+	struct mm_fp0_format mm_fp0_format;
+	struct fp1_format fp1_format;
+	struct mm_fp1_format mm_fp1_format;
+	struct mm_fp2_format mm_fp2_format;
+	struct mm_fp3_format mm_fp3_format;
+	struct mm_fp4_format mm_fp4_format;
+	struct mm_fp5_format mm_fp5_format;
+	struct fp6_format fp6_format;
+	struct mm_fp6_format mm_fp6_format;
+	struct mm_i_format mm_i_format;
+	struct mm_m_format mm_m_format;
+	struct mm_x_format mm_x_format;
+	struct mm_b0_format mm_b0_format;
+	struct mm_b1_format mm_b1_format;
+	struct mm16_m_format mm16_m_format ;
+	struct mm16_rb_format mm16_rb_format;
+	struct mm16_r3_format mm16_r3_format;
+	struct mm16_r5_format mm16_r5_format;
 };
 
 #endif /* _UAPI_ASM_INST_H */
-- 
cgit v1.2.1


From abc597fe623cfd7d3b18d5235c54f3d567d2c3d3 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <sjhill@mips.com>
Date: Tue, 5 Feb 2013 16:52:01 -0600
Subject: MIPS: microMIPS: uasm: Split 'uasm.c' into two files.

Split 'uasm.c' into two files. The new file 'uasm-mips.c' has the
functions specific to the classic MIPS ISA. The 'uasm.c' file
contains common code that can be used by classic or other ISAs
that could be supported by the kernel.

Signed-off-by: Steven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Cc: kevink@paralogos.com
Cc: ddaney.cavm@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/4922/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
(cherry picked from commit 0961103562ab958fa74f35043bf4f72e51ed6155)
---
 arch/mips/include/asm/uasm.h | 62 +++++++++++++++++++++++++++-----------------
 1 file changed, 38 insertions(+), 24 deletions(-)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/uasm.h b/arch/mips/include/asm/uasm.h
index 058e941626a6..f7d8f1509c4d 100644
--- a/arch/mips/include/asm/uasm.h
+++ b/arch/mips/include/asm/uasm.h
@@ -6,7 +6,7 @@
  * Copyright (C) 2004, 2005, 2006, 2008	 Thiemo Seufer
  * Copyright (C) 2005  Maciej W. Rozycki
  * Copyright (C) 2006  Ralf Baechle (ralf@linux-mips.org)
- * Copyright (C) 2012  MIPS Technologies, Inc.
+ * Copyright (C) 2012, 2013  MIPS Technologies, Inc.  All rights reserved.
  */
 
 #include <linux/types.h>
@@ -22,44 +22,57 @@
 #define UASM_EXPORT_SYMBOL(sym)
 #endif
 
+#define _UASM_ISA_CLASSIC	0
+
+#ifndef UASM_ISA
+#define UASM_ISA	_UASM_ISA_CLASSIC
+#endif
+
+#if (UASM_ISA == _UASM_ISA_CLASSIC)
+#define ISAOPC(op)	uasm_i##op
+#define ISAFUNC(x)	x
+#else
+#error Unsupported micro-assembler ISA!!!
+#endif
+
 #define Ip_u1u2u3(op)							\
 void __uasminit								\
-uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
+ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
 
 #define Ip_u2u1u3(op)							\
 void __uasminit								\
-uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
+ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
 
 #define Ip_u3u1u2(op)							\
 void __uasminit								\
-uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
+ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c)
 
 #define Ip_u1u2s3(op)							\
 void __uasminit								\
-uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)
+ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, signed int c)
 
 #define Ip_u2s3u1(op)							\
 void __uasminit								\
-uasm_i##op(u32 **buf, unsigned int a, signed int b, unsigned int c)
+ISAOPC(op)(u32 **buf, unsigned int a, signed int b, unsigned int c)
 
 #define Ip_u2u1s3(op)							\
 void __uasminit								\
-uasm_i##op(u32 **buf, unsigned int a, unsigned int b, signed int c)
+ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, signed int c)
 
 #define Ip_u2u1msbu3(op)						\
 void __uasminit								\
-uasm_i##op(u32 **buf, unsigned int a, unsigned int b, unsigned int c,	\
+ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b, unsigned int c,	\
 	   unsigned int d)
 
 #define Ip_u1u2(op)							\
-void __uasminit uasm_i##op(u32 **buf, unsigned int a, unsigned int b)
+void __uasminit ISAOPC(op)(u32 **buf, unsigned int a, unsigned int b)
 
 #define Ip_u1s2(op)							\
-void __uasminit uasm_i##op(u32 **buf, unsigned int a, signed int b)
+void __uasminit ISAOPC(op)(u32 **buf, unsigned int a, signed int b)
 
-#define Ip_u1(op) void __uasminit uasm_i##op(u32 **buf, unsigned int a)
+#define Ip_u1(op) void __uasminit ISAOPC(op)(u32 **buf, unsigned int a)
 
-#define Ip_0(op) void __uasminit uasm_i##op(u32 **buf)
+#define Ip_0(op) void __uasminit ISAOPC(op)(u32 **buf)
 
 Ip_u2u1s3(_addiu);
 Ip_u3u1u2(_addu);
@@ -132,14 +145,15 @@ struct uasm_label {
 	int lab;
 };
 
-void __uasminit uasm_build_label(struct uasm_label **lab, u32 *addr, int lid);
+void __uasminit ISAFUNC(uasm_build_label)(struct uasm_label **lab, u32 *addr,
+			int lid);
 #ifdef CONFIG_64BIT
-int uasm_in_compat_space_p(long addr);
+int ISAFUNC(uasm_in_compat_space_p)(long addr);
 #endif
-int uasm_rel_hi(long val);
-int uasm_rel_lo(long val);
-void UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr);
-void UASM_i_LA(u32 **buf, unsigned int rs, long addr);
+int ISAFUNC(uasm_rel_hi)(long val);
+int ISAFUNC(uasm_rel_lo)(long val);
+void ISAFUNC(UASM_i_LA_mostly)(u32 **buf, unsigned int rs, long addr);
+void ISAFUNC(UASM_i_LA)(u32 **buf, unsigned int rs, long addr);
 
 #define UASM_L_LA(lb)							\
 static inline void __uasminit uasm_l##lb(struct uasm_label **lab, u32 *addr) \
@@ -196,27 +210,27 @@ static inline void uasm_i_drotr_safe(u32 **p, unsigned int a1,
 				     unsigned int a2, unsigned int a3)
 {
 	if (a3 < 32)
-		uasm_i_drotr(p, a1, a2, a3);
+		ISAOPC(_drotr)(p, a1, a2, a3);
 	else
-		uasm_i_drotr32(p, a1, a2, a3 - 32);
+		ISAOPC(_drotr32)(p, a1, a2, a3 - 32);
 }
 
 static inline void uasm_i_dsll_safe(u32 **p, unsigned int a1,
 				    unsigned int a2, unsigned int a3)
 {
 	if (a3 < 32)
-		uasm_i_dsll(p, a1, a2, a3);
+		ISAOPC(_dsll)(p, a1, a2, a3);
 	else
-		uasm_i_dsll32(p, a1, a2, a3 - 32);
+		ISAOPC(_dsll32)(p, a1, a2, a3 - 32);
 }
 
 static inline void uasm_i_dsrl_safe(u32 **p, unsigned int a1,
 				    unsigned int a2, unsigned int a3)
 {
 	if (a3 < 32)
-		uasm_i_dsrl(p, a1, a2, a3);
+		ISAOPC(_dsrl)(p, a1, a2, a3);
 	else
-		uasm_i_dsrl32(p, a1, a2, a3 - 32);
+		ISAOPC(_dsrl32)(p, a1, a2, a3 - 32);
 }
 
 /* Handle relocations. */
-- 
cgit v1.2.1


From a6a4834cdbef23a7db16e7598c8c6e427ac82531 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <sjhill@mips.com>
Date: Tue, 5 Feb 2013 16:52:02 -0600
Subject: MIPS: microMIPS: uasm: Add microMIPS micro assembler support.

Add new file 'uasm-micromips.c' that allows the micro assembler
to generate microMIPS ISA code. It can be included in the kernel
alongside the classic ISA as long as the platform supports the
microMIPS ISA.

Signed-off-by: Steven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Cc: kevink@paralogos.com
Cc: ddaney.cavm@gmail.com
Patchwork: https://patchwork.linux-mips.org/patch/4923/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
(cherry picked from commit 5f011a866afbd03a5379f67f4e70e5efbdfc16e9)
---
 arch/mips/include/asm/uasm.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/uasm.h b/arch/mips/include/asm/uasm.h
index f7d8f1509c4d..f924b87b5308 100644
--- a/arch/mips/include/asm/uasm.h
+++ b/arch/mips/include/asm/uasm.h
@@ -23,6 +23,7 @@
 #endif
 
 #define _UASM_ISA_CLASSIC	0
+#define _UASM_ISA_MICROMIPS	1
 
 #ifndef UASM_ISA
 #define UASM_ISA	_UASM_ISA_CLASSIC
@@ -31,6 +32,9 @@
 #if (UASM_ISA == _UASM_ISA_CLASSIC)
 #define ISAOPC(op)	uasm_i##op
 #define ISAFUNC(x)	x
+#elif (UASM_ISA == _UASM_ISA_MICROMIPS)
+#define ISAOPC(op)	MM_uasm_i##op
+#define ISAFUNC(x)	MM_##x
 #else
 #error Unsupported micro-assembler ISA!!!
 #endif
-- 
cgit v1.2.1


From bfd08baae4591eca753afe3c9c63c583c4d4c78a Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <sjhill@mips.com>
Date: Tue, 5 Feb 2013 16:52:03 -0600
Subject: MIPS: microMIPS: Add instruction utility macros.

Add two new macros for microMIPS. One checks if an exception was
taken in either microMIPS or classic MIPS mode. The other checks
if a microMIPS instruction is 16-bit or 32-bit in length.

[ralf@linux-mips.org: Removed unnecessary parenthesis as noted by
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>]

Signed-off-by: Steven J. Hill <sjhill@mips.com>
Cc: linux-mips@linux-mips.org
Cc: cernekee@gmail.com
Cc: kevink@paralogos.com
Cc: ddaney.cavm@gmail.com
Cc: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Patchwork: https://patchwork.linux-mips.org/patch/4924/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
(cherry picked from commit 49df26472338b935fd5781bf94a77a88b148a716)
---
 arch/mips/include/asm/mipsregs.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index 0da44d422f5b..f64e17fa3e96 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -622,6 +622,24 @@
 
 #ifndef __ASSEMBLY__
 
+/*
+ * Macros for handling the ISA mode bit for microMIPS.
+ */
+#define get_isa16_mode(x)		((x) & 0x1)
+#define msk_isa16_mode(x)		((x) & ~0x1)
+#define set_isa16_mode(x)		do { (x) |= 0x1; } while(0)
+
+/*
+ * microMIPS instructions can be 16-bit or 32-bit in length. This
+ * returns a 1 if the instruction is 16-bit and a 0 if 32-bit.
+ */
+static inline int mm_insn_16bit(u16 insn)
+{
+	u16 opcode = (insn >> 10) & 0x7;
+
+	return (opcode >= 1 && opcode <= 3) ? 1 : 0;
+}
+
 /*
  * Functions to access the R10000 performance counters.	 These are basically
  * mfc0 and mtc0 instructions from and to coprocessor register with a 5-bit
-- 
cgit v1.2.1


From b6d92b4a6bdb880b39789c677b952c53a437028d Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Mon, 25 Mar 2013 13:47:29 -0500
Subject: MIPS: Add option to disable software I/O coherency.

Some MIPS controllers have hardware I/O coherency. This patch
detects those and turns off software coherency. A new kernel
command line option also allows the user to manually turn
software coherency on or off.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/dma-coherence.h              | 15 +++++++++++++++
 arch/mips/include/asm/dma-mapping.h                |  1 +
 arch/mips/include/asm/mach-generic/dma-coherence.h |  5 ++---
 3 files changed, 18 insertions(+), 3 deletions(-)
 create mode 100644 arch/mips/include/asm/dma-coherence.h

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/dma-coherence.h b/arch/mips/include/asm/dma-coherence.h
new file mode 100644
index 000000000000..242cbb3ca582
--- /dev/null
+++ b/arch/mips/include/asm/dma-coherence.h
@@ -0,0 +1,15 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006  Ralf Baechle <ralf@linux-mips.org>
+ *
+ */
+#ifndef __ASM_DMA_COHERENCE_H
+#define __ASM_DMA_COHERENCE_H
+
+extern int coherentio;
+extern int hw_coherentio;
+
+#endif
diff --git a/arch/mips/include/asm/dma-mapping.h b/arch/mips/include/asm/dma-mapping.h
index f8fc74b6cb47..84238c574d5e 100644
--- a/arch/mips/include/asm/dma-mapping.h
+++ b/arch/mips/include/asm/dma-mapping.h
@@ -2,6 +2,7 @@
 #define _ASM_DMA_MAPPING_H
 
 #include <asm/scatterlist.h>
+#include <asm/dma-coherence.h>
 #include <asm/cache.h>
 #include <asm-generic/dma-coherent.h>
 
diff --git a/arch/mips/include/asm/mach-generic/dma-coherence.h b/arch/mips/include/asm/mach-generic/dma-coherence.h
index 9c95177f7a7e..fe23034aaf72 100644
--- a/arch/mips/include/asm/mach-generic/dma-coherence.h
+++ b/arch/mips/include/asm/mach-generic/dma-coherence.h
@@ -61,9 +61,8 @@ static inline int plat_device_is_coherent(struct device *dev)
 {
 #ifdef CONFIG_DMA_COHERENT
 	return 1;
-#endif
-#ifdef CONFIG_DMA_NONCOHERENT
-	return 0;
+#else
+	return coherentio;
 #endif
 }
 
-- 
cgit v1.2.1


From 98ffcf602bd55656a4f6c5d9c743bffef115a8c1 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Mon, 25 Mar 2013 14:24:42 -0500
Subject: MIPS: Add declarations to MIPS Technologies Inc. generic header.

Add declaration of 'mips_scroll_message' and 'mips_display_message'
to the common generic header file for the MIPS Technologies Inc.
development boards.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/mips-boards/generic.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/mips-boards/generic.h b/arch/mips/include/asm/mips-boards/generic.h
index 44a09a64160a..bd9746fbe4af 100644
--- a/arch/mips/include/asm/mips-boards/generic.h
+++ b/arch/mips/include/asm/mips-boards/generic.h
@@ -83,4 +83,7 @@ extern void mips_pcibios_init(void);
 #define mips_pcibios_init() do { } while (0)
 #endif
 
+extern void mips_scroll_message(void);
+extern void mips_display_message(const char *str);
+
 #endif	/* __ASM_MIPS_BOARDS_GENERIC_H */
-- 
cgit v1.2.1


From 14aecdd419217e041fb5dd2749d11f58503bdf62 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Mon, 25 Mar 2013 14:32:15 -0500
Subject: MIPS: FW: Add environment variable processing.

Add parsing of the environment and command line variables passed to
the kernel to the firmware library.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/fw/fw.h | 47 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 arch/mips/include/asm/fw/fw.h

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/fw/fw.h b/arch/mips/include/asm/fw/fw.h
new file mode 100644
index 000000000000..d6c50a7e9ede
--- /dev/null
+++ b/arch/mips/include/asm/fw/fw.h
@@ -0,0 +1,47 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2012 MIPS Technologies, Inc.
+ */
+#ifndef __ASM_FW_H_
+#define __ASM_FW_H_
+
+#include <asm/bootinfo.h>	/* For cleaner code... */
+
+enum fw_memtypes {
+	fw_dontuse,
+	fw_code,
+	fw_free,
+};
+
+typedef struct {
+	unsigned long base;	/* Within KSEG0 */
+	unsigned int size;	/* bytes */
+	enum fw_memtypes type;	/* fw_memtypes */
+} fw_memblock_t;
+
+/* Maximum number of memory block descriptors. */
+#define FW_MAX_MEMBLOCKS	32
+
+extern int fw_argc;
+extern int *_fw_argv;
+extern int *_fw_envp;
+
+/*
+ * Most firmware like YAMON, PMON, etc. pass arguments and environment
+ * variables as 32-bit pointers. These take care of sign extension.
+ */
+#define fw_argv(index)		((char *)(long)_fw_argv[(index)])
+#define fw_envp(index)		((char *)(long)_fw_envp[(index)])
+
+extern void fw_init_cmdline(void);
+extern char *fw_getcmdline(void);
+extern fw_memblock_t *fw_getmdesc(void);
+extern void fw_meminit(void);
+extern char *fw_getenv(char *name);
+extern unsigned long fw_getenvl(char *name);
+extern void fw_init_early_console(char port);
+
+#endif /* __ASM_FW_H_ */
-- 
cgit v1.2.1


From 270690e00cdb034cd945ab597c24e6aff0227f77 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Mon, 25 Mar 2013 14:55:32 -0500
Subject: MIPS: FW: Remove obsolete header file for MTI platforms.

Remove 'arch/mips/include/asm/mips-boards/prom.h' and get rid of
all inclusions of it by Malta and SEAD-3 platforms.

[ralf@linux-mips.org: Fold in John Crispin <blogic@openwrt.org>'s "MIPS:
ar7 powertv build"].

[ralf@linux-mips.org: Fold in John Crispin <blogic@openwrt.org>'s "MIPS:
unbreak powertv build"].

[ralf@linux-mips.org: Test. Build. Your. Fscking. Code. Or...]

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/mips-boards/prom.h | 47 --------------------------------
 1 file changed, 47 deletions(-)
 delete mode 100644 arch/mips/include/asm/mips-boards/prom.h

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/mips-boards/prom.h b/arch/mips/include/asm/mips-boards/prom.h
deleted file mode 100644
index e7aed3e4ff58..000000000000
--- a/arch/mips/include/asm/mips-boards/prom.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Carsten Langgaard, carstenl@mips.com
- * Copyright (C) 2000 MIPS Technologies, Inc.  All rights reserved.
- *
- * ########################################################################
- *
- *  This program is free software; you can distribute it and/or modify it
- *  under the terms of the GNU General Public License (Version 2) as
- *  published by the Free Software Foundation.
- *
- *  This program is distributed in the hope it will be useful, but WITHOUT
- *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- *  for more details.
- *
- *  You should have received a copy of the GNU General Public License along
- *  with this program; if not, write to the Free Software Foundation, Inc.,
- *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * ########################################################################
- *
- * MIPS boards bootprom interface for the Linux kernel.
- *
- */
-
-#ifndef _MIPS_PROM_H
-#define _MIPS_PROM_H
-
-extern char *prom_getcmdline(void);
-extern char *prom_getenv(char *name);
-extern void prom_init_cmdline(void);
-extern void prom_meminit(void);
-extern void prom_fixup_mem_map(unsigned long start_mem, unsigned long end_mem);
-extern void mips_display_message(const char *str);
-extern void mips_display_word(unsigned int num);
-extern void mips_scroll_message(void);
-extern int get_ethernet_addr(char *ethernet_addr);
-
-/* Memory descriptor management. */
-#define PROM_MAX_PMEMBLOCKS    32
-struct prom_pmemblock {
-	unsigned long base; /* Within KSEG0. */
-	unsigned int size;  /* In bytes. */
-	unsigned int type;  /* free or prom memory */
-};
-
-#endif /* !(_MIPS_PROM_H) */
-- 
cgit v1.2.1


From d532f3d26716a39dfd4b88d687bd344fbe77e390 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Mon, 25 Mar 2013 11:58:57 -0500
Subject: MIPS: Allow ASID size to be determined at boot time.

Original patch by Ralf Baechle and removed by Harold Koerfgen
with commit f67e4ffc79905482c3b9b8c8dd65197bac7eb508. This
allows for more generic kernels since the size of the ASID
and corresponding masks can be determined at run-time. This
patch is also required for the new Aptiv cores and has been
tested on Malta and Malta Aptiv platforms.

[ralf@linux-mips.org: Added relevant part of fix
https://patchwork.linux-mips.org/patch/5213/]

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---
 arch/mips/include/asm/mmu_context.h | 95 +++++++++++++++++++++++--------------
 1 file changed, 59 insertions(+), 36 deletions(-)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h
index e81d719efcd1..bab1980bbf0d 100644
--- a/arch/mips/include/asm/mmu_context.h
+++ b/arch/mips/include/asm/mmu_context.h
@@ -62,45 +62,68 @@ extern unsigned long pgd_current[];
 	TLBMISS_HANDLER_SETUP_PGD(swapper_pg_dir)
 #endif
 #endif /* CONFIG_MIPS_PGD_C0_CONTEXT*/
-#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
 
-#define ASID_INC	0x40
-#define ASID_MASK	0xfc0
-
-#elif defined(CONFIG_CPU_R8000)
-
-#define ASID_INC	0x10
-#define ASID_MASK	0xff0
-
-#elif defined(CONFIG_MIPS_MT_SMTC)
-
-#define ASID_INC	0x1
-extern unsigned long smtc_asid_mask;
-#define ASID_MASK	(smtc_asid_mask)
-#define HW_ASID_MASK	0xff
-/* End SMTC/34K debug hack */
-#else /* FIXME: not correct for R6000 */
-
-#define ASID_INC	0x1
-#define ASID_MASK	0xff
+#define ASID_INC(asid)						\
+({								\
+	unsigned long __asid = asid;				\
+	__asm__("1:\taddiu\t%0,1\t\t\t\t# patched\n\t"		\
+	".section\t__asid_inc,\"a\"\n\t"			\
+	".word\t1b\n\t"						\
+	".previous"						\
+	:"=r" (__asid)						\
+	:"0" (__asid));						\
+	__asid;							\
+})
+#define ASID_MASK(asid)						\
+({								\
+	unsigned long __asid = asid;				\
+	__asm__("1:\tandi\t%0,%1,0xfc0\t\t\t# patched\n\t"	\
+	".section\t__asid_mask,\"a\"\n\t"			\
+	".word\t1b\n\t"						\
+	".previous"						\
+	:"=r" (__asid)						\
+	:"r" (__asid));						\
+	__asid;							\
+})
+#define ASID_VERSION_MASK					\
+({								\
+	unsigned long __asid;					\
+	__asm__("1:\taddiu\t%0,$0,0xff00\t\t\t\t# patched\n\t"	\
+	".section\t__asid_version_mask,\"a\"\n\t"		\
+	".word\t1b\n\t"						\
+	".previous"						\
+	:"=r" (__asid));					\
+	__asid;							\
+})
+#define ASID_FIRST_VERSION					\
+({								\
+	unsigned long __asid = asid;				\
+	__asm__("1:\tli\t%0,0x100\t\t\t\t# patched\n\t"		\
+	".section\t__asid_first_version,\"a\"\n\t"		\
+	".word\t1b\n\t"						\
+	".previous"						\
+	:"=r" (__asid));					\
+	__asid;							\
+})
+
+#define ASID_FIRST_VERSION_R3000	0x1000
+#define ASID_FIRST_VERSION_R4000	0x100
+#define ASID_FIRST_VERSION_R8000	0x1000
+#define ASID_FIRST_VERSION_RM9000	0x1000
 
+#ifdef CONFIG_MIPS_MT_SMTC
+#define SMTC_HW_ASID_MASK		0xff
+extern unsigned int smtc_asid_mask;
 #endif
 
 #define cpu_context(cpu, mm)	((mm)->context.asid[cpu])
-#define cpu_asid(cpu, mm)	(cpu_context((cpu), (mm)) & ASID_MASK)
+#define cpu_asid(cpu, mm)	ASID_MASK(cpu_context((cpu), (mm)))
 #define asid_cache(cpu)		(cpu_data[cpu].asid_cache)
 
 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
 {
 }
 
-/*
- *  All unused by hardware upper bits will be considered
- *  as a software asid extension.
- */
-#define ASID_VERSION_MASK  ((unsigned long)~(ASID_MASK|(ASID_MASK-1)))
-#define ASID_FIRST_VERSION ((unsigned long)(~ASID_VERSION_MASK) + 1)
-
 #ifndef CONFIG_MIPS_MT_SMTC
 /* Normal, classic MIPS get_new_mmu_context */
 static inline void
@@ -108,7 +131,7 @@ get_new_mmu_context(struct mm_struct *mm, unsigned long cpu)
 {
 	unsigned long asid = asid_cache(cpu);
 
-	if (! ((asid += ASID_INC) & ASID_MASK) ) {
+	if (!ASID_MASK((asid = ASID_INC(asid)))) {
 		if (cpu_has_vtag_icache)
 			flush_icache_all();
 		local_flush_tlb_all();	/* start new asid cycle */
@@ -166,7 +189,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 	 * free up the ASID value for use and flush any old
 	 * instances of it from the TLB.
 	 */
-	oldasid = (read_c0_entryhi() & ASID_MASK);
+	oldasid = ASID_MASK(read_c0_entryhi());
 	if(smtc_live_asid[mytlb][oldasid]) {
 		smtc_live_asid[mytlb][oldasid] &= ~(0x1 << cpu);
 		if(smtc_live_asid[mytlb][oldasid] == 0)
@@ -177,7 +200,7 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
 	 * having ASID_MASK smaller than the hardware maximum,
 	 * make sure no "soft" bits become "hard"...
 	 */
-	write_c0_entryhi((read_c0_entryhi() & ~HW_ASID_MASK) |
+	write_c0_entryhi((read_c0_entryhi() & ~SMTC_HW_ASID_MASK) |
 			 cpu_asid(cpu, next));
 	ehb(); /* Make sure it propagates to TCStatus */
 	evpe(mtflags);
@@ -230,15 +253,15 @@ activate_mm(struct mm_struct *prev, struct mm_struct *next)
 #ifdef CONFIG_MIPS_MT_SMTC
 	/* See comments for similar code above */
 	mtflags = dvpe();
-	oldasid = read_c0_entryhi() & ASID_MASK;
+	oldasid = ASID_MASK(read_c0_entryhi());
 	if(smtc_live_asid[mytlb][oldasid]) {
 		smtc_live_asid[mytlb][oldasid] &= ~(0x1 << cpu);
 		if(smtc_live_asid[mytlb][oldasid] == 0)
 			 smtc_flush_tlb_asid(oldasid);
 	}
 	/* See comments for similar code above */
-	write_c0_entryhi((read_c0_entryhi() & ~HW_ASID_MASK) |
-			 cpu_asid(cpu, next));
+	write_c0_entryhi((read_c0_entryhi() & ~SMTC_HW_ASID_MASK) |
+	                 cpu_asid(cpu, next));
 	ehb(); /* Make sure it propagates to TCStatus */
 	evpe(mtflags);
 #else
@@ -275,14 +298,14 @@ drop_mmu_context(struct mm_struct *mm, unsigned cpu)
 #ifdef CONFIG_MIPS_MT_SMTC
 		/* See comments for similar code above */
 		prevvpe = dvpe();
-		oldasid = (read_c0_entryhi() & ASID_MASK);
+		oldasid = ASID_MASK(read_c0_entryhi());
 		if (smtc_live_asid[mytlb][oldasid]) {
 			smtc_live_asid[mytlb][oldasid] &= ~(0x1 << cpu);
 			if(smtc_live_asid[mytlb][oldasid] == 0)
 				smtc_flush_tlb_asid(oldasid);
 		}
 		/* See comments for similar code above */
-		write_c0_entryhi((read_c0_entryhi() & ~HW_ASID_MASK)
+		write_c0_entryhi((read_c0_entryhi() & ~SMTC_HW_ASID_MASK)
 				| cpu_asid(cpu, mm));
 		ehb(); /* Make sure it propagates to TCStatus */
 		evpe(prevvpe);
-- 
cgit v1.2.1


From cf6d905828c2c75ebe8c818901e71e09ffe6f629 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Mon, 25 Mar 2013 12:03:41 -0500
Subject: MIPS: microMIPS: Fix macro naming in micro-assembler.

The macros did not properly take into account the ISA that
the kernel was being compiled with. A classic MIPS kernel
will have the standard 'uasm_i_##op' macro functions with
'MM_uasm_i_##op' macro functions for the microMIPS version.
A pure microMIPS kernel will have the standard macros with
'CL_uasm_i_##op' macro functions for the classic version.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/uasm.h | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/uasm.h b/arch/mips/include/asm/uasm.h
index f924b87b5308..370d967725c2 100644
--- a/arch/mips/include/asm/uasm.h
+++ b/arch/mips/include/asm/uasm.h
@@ -26,15 +26,29 @@
 #define _UASM_ISA_MICROMIPS	1
 
 #ifndef UASM_ISA
+#ifdef CONFIG_CPU_MICROMIPS
+#define UASM_ISA	_UASM_ISA_MICROMIPS
+#else
 #define UASM_ISA	_UASM_ISA_CLASSIC
 #endif
+#endif
 
 #if (UASM_ISA == _UASM_ISA_CLASSIC)
+#ifdef CONFIG_CPU_MICROMIPS
+#define ISAOPC(op)	CL_uasm_i##op
+#define ISAFUNC(x)	CL_##x
+#else
 #define ISAOPC(op)	uasm_i##op
 #define ISAFUNC(x)	x
+#endif
 #elif (UASM_ISA == _UASM_ISA_MICROMIPS)
+#ifdef CONFIG_CPU_MICROMIPS
+#define ISAOPC(op)	uasm_i##op
+#define ISAFUNC(x)	x
+#else
 #define ISAOPC(op)	MM_uasm_i##op
 #define ISAFUNC(x)	MM_##x
+#endif
 #else
 #error Unsupported micro-assembler ISA!!!
 #endif
@@ -160,9 +174,9 @@ void ISAFUNC(UASM_i_LA_mostly)(u32 **buf, unsigned int rs, long addr);
 void ISAFUNC(UASM_i_LA)(u32 **buf, unsigned int rs, long addr);
 
 #define UASM_L_LA(lb)							\
-static inline void __uasminit uasm_l##lb(struct uasm_label **lab, u32 *addr) \
+static inline void __uasminit ISAFUNC(uasm_l##lb)(struct uasm_label **lab, u32 *addr) \
 {									\
-	uasm_build_label(lab, addr, label##lb);				\
+	ISAFUNC(uasm_build_label)(lab, addr, label##lb);		\
 }
 
 /* convenience macros for instructions */
-- 
cgit v1.2.1


From 102cedc32a6e3cd537374a3678d407591d5a6fab Mon Sep 17 00:00:00 2001
From: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Date: Mon, 25 Mar 2013 12:09:02 -0500
Subject: MIPS: microMIPS: Floating point support.

Add logic needed to do floating point emulation in microMIPS mode.

Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Steven J. Hill <Steven. Hill@imgtec.com>
---
 arch/mips/include/asm/fpu_emulator.h | 6 ++++++
 arch/mips/include/asm/inst.h         | 9 +++++++++
 arch/mips/include/uapi/asm/inst.h    | 5 +++++
 3 files changed, 20 insertions(+)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/fpu_emulator.h b/arch/mips/include/asm/fpu_emulator.h
index 3b4092705567..2abb587d5ab4 100644
--- a/arch/mips/include/asm/fpu_emulator.h
+++ b/arch/mips/include/asm/fpu_emulator.h
@@ -54,6 +54,12 @@ do {									\
 extern int mips_dsemul(struct pt_regs *regs, mips_instruction ir,
 	unsigned long cpc);
 extern int do_dsemulret(struct pt_regs *xcp);
+extern int fpu_emulator_cop1Handler(struct pt_regs *xcp,
+				    struct mips_fpu_struct *ctx, int has_fpu,
+				    void *__user *fault_addr);
+int process_fpemu_return(int sig, void __user *fault_addr);
+int mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn,
+		     unsigned long *contpc);
 
 /*
  * Instruction inserted following the badinst to further tag the sequence
diff --git a/arch/mips/include/asm/inst.h b/arch/mips/include/asm/inst.h
index f1eadf764071..b27091e676c1 100644
--- a/arch/mips/include/asm/inst.h
+++ b/arch/mips/include/asm/inst.h
@@ -73,4 +73,13 @@
 
 typedef unsigned int mips_instruction;
 
+/* microMIPS instruction decode structure. Do NOT export!!! */
+struct mm_decoded_insn {
+	mips_instruction insn;
+	mips_instruction next_insn;
+	int pc_inc;
+	int next_pc_inc;
+	int micro_mips_mode;
+};
+
 #endif /* _ASM_INST_H */
diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h
index 471533778a69..23ec2f53666f 100644
--- a/arch/mips/include/uapi/asm/inst.h
+++ b/arch/mips/include/uapi/asm/inst.h
@@ -423,6 +423,11 @@ enum mm_16d_minor_op {
 	mm_addiusp_func,
 };
 
+/*
+ * (microMIPS & MIPS16e) NOP instruction.
+ */
+#define MM_NOP16	0x0c00
+
 /*
  * Damn ...  bitfields depend from byteorder :-(
  */
-- 
cgit v1.2.1


From 2a0b24f56c2492b932f1aed617ae80fb23500d21 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Mon, 25 Mar 2013 12:15:55 -0500
Subject: MIPS: microMIPS: Add support for exception handling.

All exceptions must be taken in microMIPS mode, never in classic
MIPS mode or the kernel falls apart. A few NOP instructions are
used to maintain the correct alignment of microMIPS versions of
the exception vectors.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/mipsregs.h   |  1 +
 arch/mips/include/asm/stackframe.h | 12 ++++++------
 2 files changed, 7 insertions(+), 6 deletions(-)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index f64e17fa3e96..87e6207b05e4 100644
--- a/arch/mips/include/asm/mipsregs.h
+++ b/arch/mips/include/asm/mipsregs.h
@@ -596,6 +596,7 @@
 #define MIPS_CONF3_RXI		(_ULCAST_(1) << 12)
 #define MIPS_CONF3_ULRI		(_ULCAST_(1) << 13)
 #define MIPS_CONF3_ISA		(_ULCAST_(3) << 14)
+#define MIPS_CONF3_ISA_OE	(_ULCAST_(3) << 16)
 #define MIPS_CONF3_VZ		(_ULCAST_(1) << 23)
 
 #define MIPS_CONF4_MMUSIZEEXT	(_ULCAST_(255) << 0)
diff --git a/arch/mips/include/asm/stackframe.h b/arch/mips/include/asm/stackframe.h
index c99384018161..a89d1b10d027 100644
--- a/arch/mips/include/asm/stackframe.h
+++ b/arch/mips/include/asm/stackframe.h
@@ -139,7 +139,7 @@
 1:		move	ra, k0
 		li	k0, 3
 		mtc0	k0, $22
-#endif /* CONFIG_CPU_LOONGSON2F */
+#endif /* CONFIG_CPU_JUMP_WORKAROUNDS */
 #if defined(CONFIG_32BIT) || defined(KBUILD_64BIT_SYM32)
 		lui	k1, %hi(kernelsp)
 #else
@@ -189,6 +189,7 @@
 		LONG_S	$0, PT_R0(sp)
 		mfc0	v1, CP0_STATUS
 		LONG_S	$2, PT_R2(sp)
+		LONG_S	v1, PT_STATUS(sp)
 #ifdef CONFIG_MIPS_MT_SMTC
 		/*
 		 * Ideally, these instructions would be shuffled in
@@ -200,21 +201,20 @@
 		LONG_S	k0, PT_TCSTATUS(sp)
 #endif /* CONFIG_MIPS_MT_SMTC */
 		LONG_S	$4, PT_R4(sp)
-		LONG_S	$5, PT_R5(sp)
-		LONG_S	v1, PT_STATUS(sp)
 		mfc0	v1, CP0_CAUSE
-		LONG_S	$6, PT_R6(sp)
-		LONG_S	$7, PT_R7(sp)
+		LONG_S	$5, PT_R5(sp)
 		LONG_S	v1, PT_CAUSE(sp)
+		LONG_S	$6, PT_R6(sp)
 		MFC0	v1, CP0_EPC
+		LONG_S	$7, PT_R7(sp)
 #ifdef CONFIG_64BIT
 		LONG_S	$8, PT_R8(sp)
 		LONG_S	$9, PT_R9(sp)
 #endif
+		LONG_S	v1, PT_EPC(sp)
 		LONG_S	$25, PT_R25(sp)
 		LONG_S	$28, PT_R28(sp)
 		LONG_S	$31, PT_R31(sp)
-		LONG_S	v1, PT_EPC(sp)
 		ori	$28, sp, _THREAD_MASK
 		xori	$28, _THREAD_MASK
 #ifdef CONFIG_CPU_CAVIUM_OCTEON
-- 
cgit v1.2.1


From fb6883e5809c08e43de23581759af4570ca91b0f Mon Sep 17 00:00:00 2001
From: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Date: Mon, 25 Mar 2013 13:08:40 -0500
Subject: MIPS: microMIPS: Support handling of delay slots.

Add logic needed to properly calculate exceptions for delay slots
when in microMIPS mode.

Signed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/branch.h | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/branch.h b/arch/mips/include/asm/branch.h
index 888766ae1f85..40bb9ebcc7aa 100644
--- a/arch/mips/include/asm/branch.h
+++ b/arch/mips/include/asm/branch.h
@@ -11,6 +11,13 @@
 #include <asm/ptrace.h>
 #include <asm/inst.h>
 
+extern int __isa_exception_epc(struct pt_regs *regs);
+extern int __compute_return_epc(struct pt_regs *regs);
+extern int __compute_return_epc_for_insn(struct pt_regs *regs,
+					 union mips_instruction insn);
+extern int __microMIPS_compute_return_epc(struct pt_regs *regs);
+
+
 static inline int delay_slot(struct pt_regs *regs)
 {
 	return regs->cp0_cause & CAUSEF_BD;
@@ -18,20 +25,25 @@ static inline int delay_slot(struct pt_regs *regs)
 
 static inline unsigned long exception_epc(struct pt_regs *regs)
 {
-	if (!delay_slot(regs))
+	if (likely(!delay_slot(regs)))
 		return regs->cp0_epc;
 
+	if (get_isa16_mode(regs->cp0_epc))
+		return __isa_exception_epc(regs);
+
 	return regs->cp0_epc + 4;
 }
 
 #define BRANCH_LIKELY_TAKEN 0x0001
 
-extern int __compute_return_epc(struct pt_regs *regs);
-extern int __compute_return_epc_for_insn(struct pt_regs *regs,
-					 union mips_instruction insn);
-
 static inline int compute_return_epc(struct pt_regs *regs)
 {
+	if (get_isa16_mode(regs->cp0_epc)) {
+		if (cpu_has_mmips)
+			return __microMIPS_compute_return_epc(regs);
+		return regs->cp0_epc;
+	}
+
 	if (!delay_slot(regs)) {
 		regs->cp0_epc += 4;
 		return 0;
-- 
cgit v1.2.1


From 1658f914ff91c3bf572d5ddae3773720f6803d20 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Mon, 25 Mar 2013 13:22:59 -0500
Subject: MIPS: microMIPS: Disable LL/SC and fix linker bug.

Partially revert commit e0c14a260d66ba35935600d6435940a566fe806b
and turn off LL/SC when building a pure microMIPS kernel. This is
a temporary fix until the cmpxchg assembly macro functions are
re-written to not use the HI/LO registers in address calculations.

Also add .insn in selected user access functions which would
otherwise produce ISA mode jump incompatibilities. This is also a
temporary fix.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h |  4 ++++
 arch/mips/include/asm/uaccess.h                          | 14 ++++++++++++--
 2 files changed, 16 insertions(+), 2 deletions(-)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h b/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h
index 193c0912d38e..bfbd7035d4c5 100644
--- a/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h
+++ b/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h
@@ -28,7 +28,11 @@
 /* #define cpu_has_prefetch	? */
 #define cpu_has_mcheck		1
 /* #define cpu_has_ejtag	? */
+#ifdef CONFIG_CPU_MICROMIPS
+#define cpu_has_llsc		0
+#else
 #define cpu_has_llsc		1
+#endif
 /* #define cpu_has_vtag_icache	? */
 /* #define cpu_has_dc_aliases	? */
 /* #define cpu_has_ic_fills_f_dc ? */
diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h
index bd87e36bf26a..1c9edd63dda7 100644
--- a/arch/mips/include/asm/uaccess.h
+++ b/arch/mips/include/asm/uaccess.h
@@ -261,6 +261,7 @@ do {									\
 	__asm__ __volatile__(						\
 	"1:	" insn "	%1, %3				\n"	\
 	"2:							\n"	\
+	"	.insn						\n"	\
 	"	.section .fixup,\"ax\"				\n"	\
 	"3:	li	%0, %4					\n"	\
 	"	j	2b					\n"	\
@@ -287,7 +288,9 @@ do {									\
 	__asm__ __volatile__(						\
 	"1:	lw	%1, (%3)				\n"	\
 	"2:	lw	%D1, 4(%3)				\n"	\
-	"3:	.section	.fixup,\"ax\"			\n"	\
+	"3:							\n"	\
+	"	.insn						\n"	\
+	"	.section	.fixup,\"ax\"			\n"	\
 	"4:	li	%0, %4					\n"	\
 	"	move	%1, $0					\n"	\
 	"	move	%D1, $0					\n"	\
@@ -355,6 +358,7 @@ do {									\
 	__asm__ __volatile__(						\
 	"1:	" insn "	%z2, %3		# __put_user_asm\n"	\
 	"2:							\n"	\
+	"	.insn						\n"	\
 	"	.section	.fixup,\"ax\"			\n"	\
 	"3:	li	%0, %4					\n"	\
 	"	j	2b					\n"	\
@@ -373,6 +377,7 @@ do {									\
 	"1:	sw	%2, (%3)	# __put_user_asm_ll32	\n"	\
 	"2:	sw	%D2, 4(%3)				\n"	\
 	"3:							\n"	\
+	"	.insn						\n"	\
 	"	.section	.fixup,\"ax\"			\n"	\
 	"4:	li	%0, %4					\n"	\
 	"	j	3b					\n"	\
@@ -524,6 +529,7 @@ do {									\
 	__asm__ __volatile__(						\
 	"1:	" insn "	%1, %3				\n"	\
 	"2:							\n"	\
+	"	.insn						\n"	\
 	"	.section .fixup,\"ax\"				\n"	\
 	"3:	li	%0, %4					\n"	\
 	"	j	2b					\n"	\
@@ -549,7 +555,9 @@ do {									\
 	"1:	ulw	%1, (%3)				\n"	\
 	"2:	ulw	%D1, 4(%3)				\n"	\
 	"	move	%0, $0					\n"	\
-	"3:	.section	.fixup,\"ax\"			\n"	\
+	"3:							\n"	\
+	"	.insn						\n"	\
+	"	.section	.fixup,\"ax\"			\n"	\
 	"4:	li	%0, %4					\n"	\
 	"	move	%1, $0					\n"	\
 	"	move	%D1, $0					\n"	\
@@ -616,6 +624,7 @@ do {									\
 	__asm__ __volatile__(						\
 	"1:	" insn "	%z2, %3		# __put_user_unaligned_asm\n" \
 	"2:							\n"	\
+	"	.insn						\n"	\
 	"	.section	.fixup,\"ax\"			\n"	\
 	"3:	li	%0, %4					\n"	\
 	"	j	2b					\n"	\
@@ -634,6 +643,7 @@ do {									\
 	"1:	sw	%2, (%3)	# __put_user_unaligned_asm_ll32 \n" \
 	"2:	sw	%D2, 4(%3)				\n"	\
 	"3:							\n"	\
+	"	.insn						\n"	\
 	"	.section	.fixup,\"ax\"			\n"	\
 	"4:	li	%0, %4					\n"	\
 	"	j	3b					\n"	\
-- 
cgit v1.2.1


From 26c5e07d1478021914801c8c7dd77c9268940e4f Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Mon, 25 Mar 2013 13:40:49 -0500
Subject: MIPS: microMIPS: Optimise 'memset' core library function.

Optimise 'memset' to use microMIPS instructions and/or optimisations
for binary size reduction. When the microMIPS ISA is not being used,
the library function compiles to the original binary code.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/asm.h | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/asm.h b/arch/mips/include/asm/asm.h
index 164a21e65b42..879691d194af 100644
--- a/arch/mips/include/asm/asm.h
+++ b/arch/mips/include/asm/asm.h
@@ -296,6 +296,7 @@ symbol		=	value
 #define LONG_SUBU	subu
 #define LONG_L		lw
 #define LONG_S		sw
+#define LONG_SP		swp
 #define LONG_SLL	sll
 #define LONG_SLLV	sllv
 #define LONG_SRL	srl
@@ -318,6 +319,7 @@ symbol		=	value
 #define LONG_SUBU	dsubu
 #define LONG_L		ld
 #define LONG_S		sd
+#define LONG_SP		sdp
 #define LONG_SLL	dsll
 #define LONG_SLLV	dsllv
 #define LONG_SRL	dsrl
-- 
cgit v1.2.1


From cd574704ec06904c7b7dd2c897fea5a54f944a95 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Mon, 25 Mar 2013 13:44:04 -0500
Subject: MIPS: MIPS16e: Add instruction formats.

Add structures for all the MIPS16e instructions. Also add the
enumerations for all the bit fields for opcodes, functions, etc.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/uapi/asm/inst.h | 110 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h
index 23ec2f53666f..0f4aec2ad1e6 100644
--- a/arch/mips/include/uapi/asm/inst.h
+++ b/arch/mips/include/uapi/asm/inst.h
@@ -423,6 +423,47 @@ enum mm_16d_minor_op {
 	mm_addiusp_func,
 };
 
+/*
+ * (MIPS16e) opcodes.
+ */
+enum MIPS16e_ops {
+	MIPS16e_jal_op = 003,
+	MIPS16e_ld_op = 007,
+	MIPS16e_i8_op = 014,
+	MIPS16e_sd_op = 017,
+	MIPS16e_lb_op = 020,
+	MIPS16e_lh_op = 021,
+	MIPS16e_lwsp_op = 022,
+	MIPS16e_lw_op = 023,
+	MIPS16e_lbu_op = 024,
+	MIPS16e_lhu_op = 025,
+	MIPS16e_lwpc_op = 026,
+	MIPS16e_lwu_op = 027,
+	MIPS16e_sb_op = 030,
+	MIPS16e_sh_op = 031,
+	MIPS16e_swsp_op = 032,
+	MIPS16e_sw_op = 033,
+	MIPS16e_rr_op = 035,
+	MIPS16e_extend_op = 036,
+	MIPS16e_i64_op = 037,
+};
+
+enum MIPS16e_i64_func {
+	MIPS16e_ldsp_func,
+	MIPS16e_sdsp_func,
+	MIPS16e_sdrasp_func,
+	MIPS16e_dadjsp_func,
+	MIPS16e_ldpc_func,
+};
+
+enum MIPS16e_rr_func {
+	MIPS16e_jr_func,
+};
+
+enum MIPS6e_i8_func {
+	MIPS16e_swrasp_func = 02,
+};
+
 /*
  * (microMIPS & MIPS16e) NOP instruction.
  */
@@ -745,6 +786,64 @@ struct mm16_r5_format {		/* Load/store from stack pointer format */
 	;))))
 };
 
+/*
+ * MIPS16e instruction formats (16-bit length)
+ */
+struct m16e_rr {
+	BITFIELD_FIELD(unsigned int opcode : 5,
+	BITFIELD_FIELD(unsigned int rx : 3,
+	BITFIELD_FIELD(unsigned int nd : 1,
+	BITFIELD_FIELD(unsigned int l : 1,
+	BITFIELD_FIELD(unsigned int ra : 1,
+	BITFIELD_FIELD(unsigned int func : 5,
+	;))))))
+};
+
+struct m16e_jal {
+	BITFIELD_FIELD(unsigned int opcode : 5,
+	BITFIELD_FIELD(unsigned int x : 1,
+	BITFIELD_FIELD(unsigned int imm20_16 : 5,
+	BITFIELD_FIELD(signed int imm25_21 : 5,
+	;))))
+};
+
+struct m16e_i64 {
+	BITFIELD_FIELD(unsigned int opcode : 5,
+	BITFIELD_FIELD(unsigned int func : 3,
+	BITFIELD_FIELD(unsigned int imm : 8,
+	;)))
+};
+
+struct m16e_ri64 {
+	BITFIELD_FIELD(unsigned int opcode : 5,
+	BITFIELD_FIELD(unsigned int func : 3,
+	BITFIELD_FIELD(unsigned int ry : 3,
+	BITFIELD_FIELD(unsigned int imm : 5,
+	;))))
+};
+
+struct m16e_ri {
+	BITFIELD_FIELD(unsigned int opcode : 5,
+	BITFIELD_FIELD(unsigned int rx : 3,
+	BITFIELD_FIELD(unsigned int imm : 8,
+	;)))
+};
+
+struct m16e_rri {
+	BITFIELD_FIELD(unsigned int opcode : 5,
+	BITFIELD_FIELD(unsigned int rx : 3,
+	BITFIELD_FIELD(unsigned int ry : 3,
+	BITFIELD_FIELD(unsigned int imm : 5,
+	;))))
+};
+
+struct m16e_i8 {
+	BITFIELD_FIELD(unsigned int opcode : 5,
+	BITFIELD_FIELD(unsigned int func : 3,
+	BITFIELD_FIELD(unsigned int imm : 8,
+	;)))
+};
+
 union mips_instruction {
 	unsigned int word;
 	unsigned short halfword[2];
@@ -782,4 +881,15 @@ union mips_instruction {
 	struct mm16_r5_format mm16_r5_format;
 };
 
+union mips16e_instruction {
+	unsigned int full : 16;
+	struct m16e_rr rr;
+	struct m16e_jal jal;
+	struct m16e_i64 i64;
+	struct m16e_ri64 ri64;
+	struct m16e_ri ri;
+	struct m16e_rri rri;
+	struct m16e_i8 i8;
+};
+
 #endif /* _UAPI_ASM_INST_H */
-- 
cgit v1.2.1


From 8508488fe7028b95bc86c7447c205fbc765cc4cf Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Mon, 25 Mar 2013 13:45:19 -0500
Subject: MIPS: MIPS16e: Support handling of delay slots.

Add logic needed to properly calculate exceptions for delay slots
when in MIPS16e mode.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/branch.h | 18 ++++++++++++++++++
 arch/mips/include/asm/inst.h   |  3 +++
 2 files changed, 21 insertions(+)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/branch.h b/arch/mips/include/asm/branch.h
index 40bb9ebcc7aa..e28a3e0eb3cb 100644
--- a/arch/mips/include/asm/branch.h
+++ b/arch/mips/include/asm/branch.h
@@ -16,6 +16,7 @@ extern int __compute_return_epc(struct pt_regs *regs);
 extern int __compute_return_epc_for_insn(struct pt_regs *regs,
 					 union mips_instruction insn);
 extern int __microMIPS_compute_return_epc(struct pt_regs *regs);
+extern int __MIPS16e_compute_return_epc(struct pt_regs *regs);
 
 
 static inline int delay_slot(struct pt_regs *regs)
@@ -41,6 +42,8 @@ static inline int compute_return_epc(struct pt_regs *regs)
 	if (get_isa16_mode(regs->cp0_epc)) {
 		if (cpu_has_mmips)
 			return __microMIPS_compute_return_epc(regs);
+		if (cpu_has_mips16)
+			return __MIPS16e_compute_return_epc(regs);
 		return regs->cp0_epc;
 	}
 
@@ -52,4 +55,19 @@ static inline int compute_return_epc(struct pt_regs *regs)
 	return __compute_return_epc(regs);
 }
 
+static inline int MIPS16e_compute_return_epc(struct pt_regs *regs,
+					     union mips16e_instruction *inst)
+{
+	if (likely(!delay_slot(regs))) {
+		if (inst->ri.opcode == MIPS16e_extend_op) {
+			regs->cp0_epc += 4;
+			return 0;
+		}
+		regs->cp0_epc += 2;
+		return 0;
+	}
+
+	return __MIPS16e_compute_return_epc(regs);
+}
+
 #endif /* _ASM_BRANCH_H */
diff --git a/arch/mips/include/asm/inst.h b/arch/mips/include/asm/inst.h
index b27091e676c1..22912f78401c 100644
--- a/arch/mips/include/asm/inst.h
+++ b/arch/mips/include/asm/inst.h
@@ -82,4 +82,7 @@ struct mm_decoded_insn {
 	int micro_mips_mode;
 };
 
+/* Recode table from 16-bit register notation to 32-bit GPR. Do NOT export!!! */
+extern const int reg16to32[];
+
 #endif /* _ASM_INST_H */
-- 
cgit v1.2.1


From ff86714fda0310ad153a2ba4836067f195e1f0b9 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Wed, 10 Apr 2013 16:27:04 -0500
Subject: MIPS: Move 'gic_present' to common location.

Move the global variable 'gic_present' to be defined in the file
'arch/mips/kernel/irq-gic.c' instead of defining it individually
for each platform making use of the GIC. Also change the type to
be an unsigned integer instead of signed.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/gic.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h
index bdc9786ab5a7..a05f97db0735 100644
--- a/arch/mips/include/asm/gic.h
+++ b/arch/mips/include/asm/gic.h
@@ -359,7 +359,7 @@ struct gic_shared_intr_map {
 /* Mapped interrupt to pin X, then GIC will generate the vector (X+1). */
 #define GIC_PIN_TO_VEC_OFFSET	(1)
 
-extern int gic_present;
+extern unsigned int gic_present;
 extern unsigned long _gic_base;
 extern unsigned int gic_irq_base;
 extern unsigned int gic_irq_flags[];
-- 
cgit v1.2.1


From 28ea215186d365408756577e9e612ee334e26f8e Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Wed, 10 Apr 2013 16:27:50 -0500
Subject: MIPS: Move 'gic_frequency' to common location.

Move the global variable 'gic_frequency' to be defined in the file
'arch/mips/kernel/irq-gic.c' instead of defining it individually
for each platform making use of the GIC. Also change the type to
be an unsigned integer instead of signed.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/gic.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h
index a05f97db0735..f1a1e986d86b 100644
--- a/arch/mips/include/asm/gic.h
+++ b/arch/mips/include/asm/gic.h
@@ -360,6 +360,7 @@ struct gic_shared_intr_map {
 #define GIC_PIN_TO_VEC_OFFSET	(1)
 
 extern unsigned int gic_present;
+extern unsigned int gic_frequency;
 extern unsigned long _gic_base;
 extern unsigned int gic_irq_base;
 extern unsigned int gic_irq_flags[];
-- 
cgit v1.2.1


From dfa762e1c31c30607e4e5259f287dd3e174cbcc3 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Wed, 10 Apr 2013 16:28:36 -0500
Subject: MIPS: Refactor GIC clocksource code.

Reorganize some of the GIC clocksource driver code. Below is a list of
the various changes.

  * No longer select CSRC_GIC by default for Malta platform.
  * Limit choice for either the GIC or R4K clocksource, not both.
  * Change location in Makefile.
  * Created new 'gic_read_count' function in common 'irq-gic.c' file.
  * Change 'git_hpt_read' function in 'csrc-gic.c' to use new function.
  * Surround GIC specific code in Malta platform code with #ifdef's.
  * Only initialize the GIC clocksource if it was selected. Original
    code called it unconditionally if a GIC was found.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/gic.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h
index f1a1e986d86b..6aa68ffad33c 100644
--- a/arch/mips/include/asm/gic.h
+++ b/arch/mips/include/asm/gic.h
@@ -359,6 +359,9 @@ struct gic_shared_intr_map {
 /* Mapped interrupt to pin X, then GIC will generate the vector (X+1). */
 #define GIC_PIN_TO_VEC_OFFSET	(1)
 
+#include <linux/clocksource.h>
+#include <linux/irq.h>
+
 extern unsigned int gic_present;
 extern unsigned int gic_frequency;
 extern unsigned long _gic_base;
@@ -372,6 +375,7 @@ extern void gic_init(unsigned long gic_base_addr,
 
 extern void gic_clocksource_init(unsigned int);
 extern unsigned int gic_get_int(void);
+extern cycle_t gic_read_count(void);
 extern void gic_send_ipi(unsigned int intr);
 extern unsigned int plat_ipi_call_int_xlate(unsigned int);
 extern unsigned int plat_ipi_resched_int_xlate(unsigned int);
-- 
cgit v1.2.1


From 2675fa7c7b46842f82b2766b5abe80e16ce32977 Mon Sep 17 00:00:00 2001
From: "Steven J. Hill" <Steven.Hill@imgtec.com>
Date: Wed, 10 Apr 2013 16:29:13 -0500
Subject: MIPS: Formatting clean-ups for clocksources.

Various whitespace and #ifdef removals for GIC and R4K clocksources.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/gic.h  | 4 +---
 arch/mips/include/asm/time.h | 5 +----
 2 files changed, 2 insertions(+), 7 deletions(-)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h
index 6aa68ffad33c..398cf548832a 100644
--- a/arch/mips/include/asm/gic.h
+++ b/arch/mips/include/asm/gic.h
@@ -372,19 +372,17 @@ extern struct gic_shared_intr_map gic_shared_intr_map[];
 extern void gic_init(unsigned long gic_base_addr,
 	unsigned long gic_addrspace_size, struct gic_intr_map *intrmap,
 	unsigned int intrmap_size, unsigned int irqbase);
-
 extern void gic_clocksource_init(unsigned int);
-extern unsigned int gic_get_int(void);
 extern cycle_t gic_read_count(void);
 extern void gic_send_ipi(unsigned int intr);
 extern unsigned int plat_ipi_call_int_xlate(unsigned int);
 extern unsigned int plat_ipi_resched_int_xlate(unsigned int);
 extern void gic_bind_eic_interrupt(int irq, int set);
 extern unsigned int gic_get_timer_pending(void);
+extern unsigned int gic_get_int(void);
 extern void gic_enable_interrupt(int irq_vec);
 extern void gic_disable_interrupt(int irq_vec);
 extern void gic_irq_ack(struct irq_data *d);
 extern void gic_finish_irq(struct irq_data *d);
 extern void gic_platform_init(int irqs, struct irq_chip *irq_controller);
-
 #endif /* _ASM_GICREGS_H */
diff --git a/arch/mips/include/asm/time.h b/arch/mips/include/asm/time.h
index debc8009bd58..47842187ae42 100644
--- a/arch/mips/include/asm/time.h
+++ b/arch/mips/include/asm/time.h
@@ -52,12 +52,11 @@ extern int (*perf_irq)(void);
  */
 extern unsigned int __weak get_c0_compare_int(void);
 extern int r4k_clockevent_init(void);
+extern int smtc_clockevent_init(void);
 
 static inline int mips_clockevent_init(void)
 {
 #ifdef CONFIG_MIPS_MT_SMTC
-	extern int smtc_clockevent_init(void);
-
 	return smtc_clockevent_init();
 #elif defined(CONFIG_CEVT_R4K)
 	return r4k_clockevent_init();
@@ -69,9 +68,7 @@ static inline int mips_clockevent_init(void)
 /*
  * Initialize the count register as a clocksource
  */
-#ifdef CONFIG_CSRC_R4K
 extern int init_r4k_clocksource(void);
-#endif
 
 static inline int init_mips_clocksource(void)
 {
-- 
cgit v1.2.1


From 0ab2b7d08ea7226dc72ff0f8c05f470566facf7c Mon Sep 17 00:00:00 2001
From: Raghu Gandham <Raghu.Gandham@imgtec.com>
Date: Wed, 10 Apr 2013 16:30:12 -0500
Subject: MIPS: Add new GIC clockevent driver.

Add new clockevent driver that uses the counter present on the MIPS
Global Interrupt Controller.

Signed-off-by: Raghu Gandham <Raghu.Gandham@imgtec.com>
Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
---
 arch/mips/include/asm/gic.h  | 5 ++++-
 arch/mips/include/asm/time.h | 3 +++
 2 files changed, 7 insertions(+), 1 deletion(-)

(limited to 'arch/mips/include')

diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h
index 398cf548832a..7153b32de18e 100644
--- a/arch/mips/include/asm/gic.h
+++ b/arch/mips/include/asm/gic.h
@@ -202,7 +202,7 @@
 #define GIC_VPE_WD_COUNT0_OFS		0x0094
 #define GIC_VPE_WD_INITIAL0_OFS		0x0098
 #define GIC_VPE_COMPARE_LO_OFS		0x00a0
-#define GIC_VPE_COMPARE_HI		0x00a4
+#define GIC_VPE_COMPARE_HI_OFS		0x00a4
 
 #define GIC_VPE_EIC_SHADOW_SET_BASE	0x0100
 #define GIC_VPE_EIC_SS(intr) \
@@ -373,7 +373,10 @@ extern void gic_init(unsigned long gic_base_addr,
 	unsigned long gic_addrspace_size, struct gic_intr_map *intrmap,
 	unsigned int intrmap_size, unsigned int irqbase);
 extern void gic_clocksource_init(unsigned int);
+extern unsigned int gic_compare_int (void);
 extern cycle_t gic_read_count(void);
+extern cycle_t gic_read_compare(void);
+extern void gic_write_compare(cycle_t cnt);
 extern void gic_send_ipi(unsigned int intr);
 extern unsigned int plat_ipi_call_int_xlate(unsigned int);
 extern unsigned int plat_ipi_resched_int_xlate(unsigned int);
diff --git a/arch/mips/include/asm/time.h b/arch/mips/include/asm/time.h
index 47842187ae42..2d7b9df4542d 100644
--- a/arch/mips/include/asm/time.h
+++ b/arch/mips/include/asm/time.h
@@ -53,11 +53,14 @@ extern int (*perf_irq)(void);
 extern unsigned int __weak get_c0_compare_int(void);
 extern int r4k_clockevent_init(void);
 extern int smtc_clockevent_init(void);
+extern int gic_clockevent_init(void);
 
 static inline int mips_clockevent_init(void)
 {
 #ifdef CONFIG_MIPS_MT_SMTC
 	return smtc_clockevent_init();
+#elif defined(CONFIG_CEVT_GIC)
+	return (gic_clockevent_init() | r4k_clockevent_init());
 #elif defined(CONFIG_CEVT_R4K)
 	return r4k_clockevent_init();
 #else
-- 
cgit v1.2.1