From 2aa9fd06e221da4e69693dc1b5c6c6bc84c76f32 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 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 (cherry picked from commit d7f19e43a4337d4d40ff5e241172912130d06a4c) diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h index 4d07881..4715337 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 @@ -193,6 +194,236 @@ enum lx_func { }; /* + * (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 :-( */ #ifdef __MIPSEB__ @@ -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 v0.10.2 From abc597fe623cfd7d3b18d5235c54f3d567d2c3d3 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 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 (cherry picked from commit 0961103562ab958fa74f35043bf4f72e51ed6155) diff --git a/arch/mips/include/asm/uasm.h b/arch/mips/include/asm/uasm.h index 058e941..f7d8f15 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 @@ -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. */ diff --git a/arch/mips/mm/Makefile b/arch/mips/mm/Makefile index 1dcec30..9e90c21 100644 --- a/arch/mips/mm/Makefile +++ b/arch/mips/mm/Makefile @@ -4,7 +4,7 @@ obj-y += cache.o dma-default.o extable.o fault.o \ gup.o init.o mmap.o page.o page-funcs.o \ - tlbex.o tlbex-fault.o uasm.o + tlbex.o tlbex-fault.o uasm-mips.o obj-$(CONFIG_32BIT) += ioremap.o pgtable-32.o obj-$(CONFIG_64BIT) += pgtable-64.o diff --git a/arch/mips/mm/uasm-mips.c b/arch/mips/mm/uasm-mips.c new file mode 100644 index 0000000..e78e74d --- /dev/null +++ b/arch/mips/mm/uasm-mips.c @@ -0,0 +1,196 @@ +/* + * 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. + * + * A small micro-assembler. It is intentionally kept simple, does only + * support a subset of instructions, and does not try to hide pipeline + * effects like branch delay slots. + * + * Copyright (C) 2004, 2005, 2006, 2008 Thiemo Seufer + * Copyright (C) 2005, 2007 Maciej W. Rozycki + * Copyright (C) 2006 Ralf Baechle (ralf@linux-mips.org) + * Copyright (C) 2012, 2013 MIPS Technologies, Inc. All rights reserved. + */ + +#include +#include +#include + +#include +#include +#include +#include + +#define RS_MASK 0x1f +#define RS_SH 21 +#define RT_MASK 0x1f +#define RT_SH 16 +#define SCIMM_MASK 0xfffff +#define SCIMM_SH 6 + +/* This macro sets the non-variable bits of an instruction. */ +#define M(a, b, c, d, e, f) \ + ((a) << OP_SH \ + | (b) << RS_SH \ + | (c) << RT_SH \ + | (d) << RD_SH \ + | (e) << RE_SH \ + | (f) << FUNC_SH) + +#include "uasm.c" + +static struct insn insn_table[] __uasminitdata = { + { insn_addiu, M(addiu_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, + { insn_addu, M(spec_op, 0, 0, 0, 0, addu_op), RS | RT | RD }, + { insn_andi, M(andi_op, 0, 0, 0, 0, 0), RS | RT | UIMM }, + { insn_and, M(spec_op, 0, 0, 0, 0, and_op), RS | RT | RD }, + { insn_bbit0, M(lwc2_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, + { insn_bbit1, M(swc2_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, + { insn_beql, M(beql_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, + { insn_beq, M(beq_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, + { insn_bgezl, M(bcond_op, 0, bgezl_op, 0, 0, 0), RS | BIMM }, + { insn_bgez, M(bcond_op, 0, bgez_op, 0, 0, 0), RS | BIMM }, + { insn_bltzl, M(bcond_op, 0, bltzl_op, 0, 0, 0), RS | BIMM }, + { insn_bltz, M(bcond_op, 0, bltz_op, 0, 0, 0), RS | BIMM }, + { insn_bne, M(bne_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, + { insn_cache, M(cache_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, + { insn_daddiu, M(daddiu_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, + { insn_daddu, M(spec_op, 0, 0, 0, 0, daddu_op), RS | RT | RD }, + { insn_dinsm, M(spec3_op, 0, 0, 0, 0, dinsm_op), RS | RT | RD | RE }, + { insn_dins, M(spec3_op, 0, 0, 0, 0, dins_op), RS | RT | RD | RE }, + { insn_dmfc0, M(cop0_op, dmfc_op, 0, 0, 0, 0), RT | RD | SET}, + { insn_dmtc0, M(cop0_op, dmtc_op, 0, 0, 0, 0), RT | RD | SET}, + { insn_drotr32, M(spec_op, 1, 0, 0, 0, dsrl32_op), RT | RD | RE }, + { insn_drotr, M(spec_op, 1, 0, 0, 0, dsrl_op), RT | RD | RE }, + { insn_dsll32, M(spec_op, 0, 0, 0, 0, dsll32_op), RT | RD | RE }, + { insn_dsll, M(spec_op, 0, 0, 0, 0, dsll_op), RT | RD | RE }, + { insn_dsra, M(spec_op, 0, 0, 0, 0, dsra_op), RT | RD | RE }, + { insn_dsrl32, M(spec_op, 0, 0, 0, 0, dsrl32_op), RT | RD | RE }, + { insn_dsrl, M(spec_op, 0, 0, 0, 0, dsrl_op), RT | RD | RE }, + { insn_dsubu, M(spec_op, 0, 0, 0, 0, dsubu_op), RS | RT | RD }, + { insn_eret, M(cop0_op, cop_op, 0, 0, 0, eret_op), 0 }, + { insn_ext, M(spec3_op, 0, 0, 0, 0, ext_op), RS | RT | RD | RE }, + { insn_ins, M(spec3_op, 0, 0, 0, 0, ins_op), RS | RT | RD | RE }, + { insn_j, M(j_op, 0, 0, 0, 0, 0), JIMM }, + { insn_jal, M(jal_op, 0, 0, 0, 0, 0), JIMM }, + { insn_j, M(j_op, 0, 0, 0, 0, 0), JIMM }, + { insn_jr, M(spec_op, 0, 0, 0, 0, jr_op), RS }, + { insn_ld, M(ld_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, + { insn_ldx, M(spec3_op, 0, 0, 0, ldx_op, lx_op), RS | RT | RD }, + { insn_lld, M(lld_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, + { insn_ll, M(ll_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, + { insn_lui, M(lui_op, 0, 0, 0, 0, 0), RT | SIMM }, + { insn_lw, M(lw_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, + { insn_lwx, M(spec3_op, 0, 0, 0, lwx_op, lx_op), RS | RT | RD }, + { insn_mfc0, M(cop0_op, mfc_op, 0, 0, 0, 0), RT | RD | SET}, + { insn_mtc0, M(cop0_op, mtc_op, 0, 0, 0, 0), RT | RD | SET}, + { insn_ori, M(ori_op, 0, 0, 0, 0, 0), RS | RT | UIMM }, + { insn_or, M(spec_op, 0, 0, 0, 0, or_op), RS | RT | RD }, + { insn_pref, M(pref_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, + { insn_rfe, M(cop0_op, cop_op, 0, 0, 0, rfe_op), 0 }, + { insn_rotr, M(spec_op, 1, 0, 0, 0, srl_op), RT | RD | RE }, + { insn_scd, M(scd_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, + { insn_sc, M(sc_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, + { insn_sd, M(sd_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, + { insn_sll, M(spec_op, 0, 0, 0, 0, sll_op), RT | RD | RE }, + { insn_sra, M(spec_op, 0, 0, 0, 0, sra_op), RT | RD | RE }, + { insn_srl, M(spec_op, 0, 0, 0, 0, srl_op), RT | RD | RE }, + { insn_subu, M(spec_op, 0, 0, 0, 0, subu_op), RS | RT | RD }, + { insn_sw, M(sw_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, + { insn_syscall, M(spec_op, 0, 0, 0, 0, syscall_op), SCIMM}, + { insn_tlbp, M(cop0_op, cop_op, 0, 0, 0, tlbp_op), 0 }, + { insn_tlbr, M(cop0_op, cop_op, 0, 0, 0, tlbr_op), 0 }, + { insn_tlbwi, M(cop0_op, cop_op, 0, 0, 0, tlbwi_op), 0 }, + { insn_tlbwr, M(cop0_op, cop_op, 0, 0, 0, tlbwr_op), 0 }, + { insn_xori, M(xori_op, 0, 0, 0, 0, 0), RS | RT | UIMM }, + { insn_xor, M(spec_op, 0, 0, 0, 0, xor_op), RS | RT | RD }, + { insn_invalid, 0, 0 } +}; + +#undef M + +static inline __uasminit u32 build_bimm(s32 arg) +{ + WARN(arg > 0x1ffff || arg < -0x20000, + KERN_WARNING "Micro-assembler field overflow\n"); + + WARN(arg & 0x3, KERN_WARNING "Invalid micro-assembler branch target\n"); + + return ((arg < 0) ? (1 << 15) : 0) | ((arg >> 2) & 0x7fff); +} + +static inline __uasminit u32 build_jimm(u32 arg) +{ + WARN(arg & ~(JIMM_MASK << 2), + KERN_WARNING "Micro-assembler field overflow\n"); + + return (arg >> 2) & JIMM_MASK; +} + +/* + * The order of opcode arguments is implicitly left to right, + * starting with RS and ending with FUNC or IMM. + */ +static void __uasminit build_insn(u32 **buf, enum opcode opc, ...) +{ + struct insn *ip = NULL; + unsigned int i; + va_list ap; + u32 op; + + for (i = 0; insn_table[i].opcode != insn_invalid; i++) + if (insn_table[i].opcode == opc) { + ip = &insn_table[i]; + break; + } + + if (!ip || (opc == insn_daddiu && r4k_daddiu_bug())) + panic("Unsupported Micro-assembler instruction %d", opc); + + op = ip->match; + va_start(ap, opc); + if (ip->fields & RS) + op |= build_rs(va_arg(ap, u32)); + if (ip->fields & RT) + op |= build_rt(va_arg(ap, u32)); + if (ip->fields & RD) + op |= build_rd(va_arg(ap, u32)); + if (ip->fields & RE) + op |= build_re(va_arg(ap, u32)); + if (ip->fields & SIMM) + op |= build_simm(va_arg(ap, s32)); + if (ip->fields & UIMM) + op |= build_uimm(va_arg(ap, u32)); + if (ip->fields & BIMM) + op |= build_bimm(va_arg(ap, s32)); + if (ip->fields & JIMM) + op |= build_jimm(va_arg(ap, u32)); + if (ip->fields & FUNC) + op |= build_func(va_arg(ap, u32)); + if (ip->fields & SET) + op |= build_set(va_arg(ap, u32)); + if (ip->fields & SCIMM) + op |= build_scimm(va_arg(ap, u32)); + va_end(ap); + + **buf = op; + (*buf)++; +} + +static inline void __uasminit +__resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab) +{ + long laddr = (long)lab->addr; + long raddr = (long)rel->addr; + + switch (rel->type) { + case R_MIPS_PC16: + *rel->addr |= build_bimm(laddr - (raddr + 4)); + break; + + default: + panic("Unsupported Micro-assembler relocation %d", + rel->type); + } +} diff --git a/arch/mips/mm/uasm.c b/arch/mips/mm/uasm.c index 942ff6c..7eb5e43 100644 --- a/arch/mips/mm/uasm.c +++ b/arch/mips/mm/uasm.c @@ -10,17 +10,9 @@ * Copyright (C) 2004, 2005, 2006, 2008 Thiemo Seufer * Copyright (C) 2005, 2007 Maciej W. Rozycki * Copyright (C) 2006 Ralf Baechle (ralf@linux-mips.org) + * Copyright (C) 2012, 2013 MIPS Technologies, Inc. All rights reserved. */ -#include -#include -#include - -#include -#include -#include -#include - enum fields { RS = 0x001, RT = 0x002, @@ -37,10 +29,6 @@ enum fields { #define OP_MASK 0x3f #define OP_SH 26 -#define RS_MASK 0x1f -#define RS_SH 21 -#define RT_MASK 0x1f -#define RT_SH 16 #define RD_MASK 0x1f #define RD_SH 11 #define RE_MASK 0x1f @@ -53,8 +41,6 @@ enum fields { #define FUNC_SH 0 #define SET_MASK 0x7 #define SET_SH 0 -#define SCIMM_MASK 0xfffff -#define SCIMM_SH 6 enum opcode { insn_invalid, @@ -77,85 +63,6 @@ struct insn { enum fields fields; }; -/* This macro sets the non-variable bits of an instruction. */ -#define M(a, b, c, d, e, f) \ - ((a) << OP_SH \ - | (b) << RS_SH \ - | (c) << RT_SH \ - | (d) << RD_SH \ - | (e) << RE_SH \ - | (f) << FUNC_SH) - -static struct insn insn_table[] __uasminitdata = { - { insn_addiu, M(addiu_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, - { insn_addu, M(spec_op, 0, 0, 0, 0, addu_op), RS | RT | RD }, - { insn_andi, M(andi_op, 0, 0, 0, 0, 0), RS | RT | UIMM }, - { insn_and, M(spec_op, 0, 0, 0, 0, and_op), RS | RT | RD }, - { insn_bbit0, M(lwc2_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, - { insn_bbit1, M(swc2_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, - { insn_beql, M(beql_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, - { insn_beq, M(beq_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, - { insn_bgezl, M(bcond_op, 0, bgezl_op, 0, 0, 0), RS | BIMM }, - { insn_bgez, M(bcond_op, 0, bgez_op, 0, 0, 0), RS | BIMM }, - { insn_bltzl, M(bcond_op, 0, bltzl_op, 0, 0, 0), RS | BIMM }, - { insn_bltz, M(bcond_op, 0, bltz_op, 0, 0, 0), RS | BIMM }, - { insn_bne, M(bne_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, - { insn_cache, M(cache_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, - { insn_daddiu, M(daddiu_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, - { insn_daddu, M(spec_op, 0, 0, 0, 0, daddu_op), RS | RT | RD }, - { insn_dinsm, M(spec3_op, 0, 0, 0, 0, dinsm_op), RS | RT | RD | RE }, - { insn_dins, M(spec3_op, 0, 0, 0, 0, dins_op), RS | RT | RD | RE }, - { insn_dmfc0, M(cop0_op, dmfc_op, 0, 0, 0, 0), RT | RD | SET}, - { insn_dmtc0, M(cop0_op, dmtc_op, 0, 0, 0, 0), RT | RD | SET}, - { insn_drotr32, M(spec_op, 1, 0, 0, 0, dsrl32_op), RT | RD | RE }, - { insn_drotr, M(spec_op, 1, 0, 0, 0, dsrl_op), RT | RD | RE }, - { insn_dsll32, M(spec_op, 0, 0, 0, 0, dsll32_op), RT | RD | RE }, - { insn_dsll, M(spec_op, 0, 0, 0, 0, dsll_op), RT | RD | RE }, - { insn_dsra, M(spec_op, 0, 0, 0, 0, dsra_op), RT | RD | RE }, - { insn_dsrl32, M(spec_op, 0, 0, 0, 0, dsrl32_op), RT | RD | RE }, - { insn_dsrl, M(spec_op, 0, 0, 0, 0, dsrl_op), RT | RD | RE }, - { insn_dsubu, M(spec_op, 0, 0, 0, 0, dsubu_op), RS | RT | RD }, - { insn_eret, M(cop0_op, cop_op, 0, 0, 0, eret_op), 0 }, - { insn_ext, M(spec3_op, 0, 0, 0, 0, ext_op), RS | RT | RD | RE }, - { insn_ins, M(spec3_op, 0, 0, 0, 0, ins_op), RS | RT | RD | RE }, - { insn_j, M(j_op, 0, 0, 0, 0, 0), JIMM }, - { insn_jal, M(jal_op, 0, 0, 0, 0, 0), JIMM }, - { insn_j, M(j_op, 0, 0, 0, 0, 0), JIMM }, - { insn_jr, M(spec_op, 0, 0, 0, 0, jr_op), RS }, - { insn_ld, M(ld_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, - { insn_ldx, M(spec3_op, 0, 0, 0, ldx_op, lx_op), RS | RT | RD }, - { insn_lld, M(lld_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, - { insn_ll, M(ll_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, - { insn_lui, M(lui_op, 0, 0, 0, 0, 0), RT | SIMM }, - { insn_lw, M(lw_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, - { insn_lwx, M(spec3_op, 0, 0, 0, lwx_op, lx_op), RS | RT | RD }, - { insn_mfc0, M(cop0_op, mfc_op, 0, 0, 0, 0), RT | RD | SET}, - { insn_mtc0, M(cop0_op, mtc_op, 0, 0, 0, 0), RT | RD | SET}, - { insn_ori, M(ori_op, 0, 0, 0, 0, 0), RS | RT | UIMM }, - { insn_or, M(spec_op, 0, 0, 0, 0, or_op), RS | RT | RD }, - { insn_pref, M(pref_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, - { insn_rfe, M(cop0_op, cop_op, 0, 0, 0, rfe_op), 0 }, - { insn_rotr, M(spec_op, 1, 0, 0, 0, srl_op), RT | RD | RE }, - { insn_scd, M(scd_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, - { insn_sc, M(sc_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, - { insn_sd, M(sd_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, - { insn_sll, M(spec_op, 0, 0, 0, 0, sll_op), RT | RD | RE }, - { insn_sra, M(spec_op, 0, 0, 0, 0, sra_op), RT | RD | RE }, - { insn_srl, M(spec_op, 0, 0, 0, 0, srl_op), RT | RD | RE }, - { insn_subu, M(spec_op, 0, 0, 0, 0, subu_op), RS | RT | RD }, - { insn_sw, M(sw_op, 0, 0, 0, 0, 0), RS | RT | SIMM }, - { insn_syscall, M(spec_op, 0, 0, 0, 0, syscall_op), SCIMM}, - { insn_tlbp, M(cop0_op, cop_op, 0, 0, 0, tlbp_op), 0 }, - { insn_tlbr, M(cop0_op, cop_op, 0, 0, 0, tlbr_op), 0 }, - { insn_tlbwi, M(cop0_op, cop_op, 0, 0, 0, tlbwi_op), 0 }, - { insn_tlbwr, M(cop0_op, cop_op, 0, 0, 0, tlbwr_op), 0 }, - { insn_xori, M(xori_op, 0, 0, 0, 0, 0), RS | RT | UIMM }, - { insn_xor, M(spec_op, 0, 0, 0, 0, xor_op), RS | RT | RD }, - { insn_invalid, 0, 0 } -}; - -#undef M - static inline __uasminit u32 build_rs(u32 arg) { WARN(arg & ~RS_MASK, KERN_WARNING "Micro-assembler field overflow\n"); @@ -199,24 +106,6 @@ static inline __uasminit u32 build_uimm(u32 arg) return arg & IMM_MASK; } -static inline __uasminit u32 build_bimm(s32 arg) -{ - WARN(arg > 0x1ffff || arg < -0x20000, - KERN_WARNING "Micro-assembler field overflow\n"); - - WARN(arg & 0x3, KERN_WARNING "Invalid micro-assembler branch target\n"); - - return ((arg < 0) ? (1 << 15) : 0) | ((arg >> 2) & 0x7fff); -} - -static inline __uasminit u32 build_jimm(u32 arg) -{ - WARN(arg & ~(JIMM_MASK << 2), - KERN_WARNING "Micro-assembler field overflow\n"); - - return (arg >> 2) & JIMM_MASK; -} - static inline __uasminit u32 build_scimm(u32 arg) { WARN(arg & ~SCIMM_MASK, @@ -239,55 +128,7 @@ static inline __uasminit u32 build_set(u32 arg) return arg & SET_MASK; } -/* - * The order of opcode arguments is implicitly left to right, - * starting with RS and ending with FUNC or IMM. - */ -static void __uasminit build_insn(u32 **buf, enum opcode opc, ...) -{ - struct insn *ip = NULL; - unsigned int i; - va_list ap; - u32 op; - - for (i = 0; insn_table[i].opcode != insn_invalid; i++) - if (insn_table[i].opcode == opc) { - ip = &insn_table[i]; - break; - } - - if (!ip || (opc == insn_daddiu && r4k_daddiu_bug())) - panic("Unsupported Micro-assembler instruction %d", opc); - - op = ip->match; - va_start(ap, opc); - if (ip->fields & RS) - op |= build_rs(va_arg(ap, u32)); - if (ip->fields & RT) - op |= build_rt(va_arg(ap, u32)); - if (ip->fields & RD) - op |= build_rd(va_arg(ap, u32)); - if (ip->fields & RE) - op |= build_re(va_arg(ap, u32)); - if (ip->fields & SIMM) - op |= build_simm(va_arg(ap, s32)); - if (ip->fields & UIMM) - op |= build_uimm(va_arg(ap, u32)); - if (ip->fields & BIMM) - op |= build_bimm(va_arg(ap, s32)); - if (ip->fields & JIMM) - op |= build_jimm(va_arg(ap, u32)); - if (ip->fields & FUNC) - op |= build_func(va_arg(ap, u32)); - if (ip->fields & SET) - op |= build_set(va_arg(ap, u32)); - if (ip->fields & SCIMM) - op |= build_scimm(va_arg(ap, u32)); - va_end(ap); - - **buf = op; - (*buf)++; -} +static void __uasminit build_insn(u32 **buf, enum opcode opc, ...); #define I_u1u2u3(op) \ Ip_u1u2u3(op) \ @@ -445,7 +286,7 @@ I_u3u1u2(_ldx) #ifdef CONFIG_CPU_CAVIUM_OCTEON #include -void __uasminit uasm_i_pref(u32 **buf, unsigned int a, signed int b, +void __uasminit ISAFUNC(uasm_i_pref)(u32 **buf, unsigned int a, signed int b, unsigned int c) { if (OCTEON_IS_MODEL(OCTEON_CN63XX_PASS1_X) && a <= 24 && a != 5) @@ -457,21 +298,21 @@ void __uasminit uasm_i_pref(u32 **buf, unsigned int a, signed int b, else build_insn(buf, insn_pref, c, a, b); } -UASM_EXPORT_SYMBOL(uasm_i_pref); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_i_pref)); #else I_u2s3u1(_pref) #endif /* Handle labels. */ -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) { (*lab)->addr = addr; (*lab)->lab = lid; (*lab)++; } -UASM_EXPORT_SYMBOL(uasm_build_label); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_build_label)); -int __uasminit uasm_in_compat_space_p(long addr) +int __uasminit ISAFUNC(uasm_in_compat_space_p)(long addr) { /* Is this address in 32bit compat space? */ #ifdef CONFIG_64BIT @@ -480,7 +321,7 @@ int __uasminit uasm_in_compat_space_p(long addr) return 1; #endif } -UASM_EXPORT_SYMBOL(uasm_in_compat_space_p); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_in_compat_space_p)); static int __uasminit uasm_rel_highest(long val) { @@ -500,77 +341,66 @@ static int __uasminit uasm_rel_higher(long val) #endif } -int __uasminit uasm_rel_hi(long val) +int __uasminit ISAFUNC(uasm_rel_hi)(long val) { return ((((val + 0x8000L) >> 16) & 0xffff) ^ 0x8000) - 0x8000; } -UASM_EXPORT_SYMBOL(uasm_rel_hi); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_rel_hi)); -int __uasminit uasm_rel_lo(long val) +int __uasminit ISAFUNC(uasm_rel_lo)(long val) { return ((val & 0xffff) ^ 0x8000) - 0x8000; } -UASM_EXPORT_SYMBOL(uasm_rel_lo); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_rel_lo)); -void __uasminit UASM_i_LA_mostly(u32 **buf, unsigned int rs, long addr) +void __uasminit ISAFUNC(UASM_i_LA_mostly)(u32 **buf, unsigned int rs, long addr) { - if (!uasm_in_compat_space_p(addr)) { - uasm_i_lui(buf, rs, uasm_rel_highest(addr)); + if (!ISAFUNC(uasm_in_compat_space_p)(addr)) { + ISAFUNC(uasm_i_lui)(buf, rs, uasm_rel_highest(addr)); if (uasm_rel_higher(addr)) - uasm_i_daddiu(buf, rs, rs, uasm_rel_higher(addr)); - if (uasm_rel_hi(addr)) { - uasm_i_dsll(buf, rs, rs, 16); - uasm_i_daddiu(buf, rs, rs, uasm_rel_hi(addr)); - uasm_i_dsll(buf, rs, rs, 16); + ISAFUNC(uasm_i_daddiu)(buf, rs, rs, uasm_rel_higher(addr)); + if (ISAFUNC(uasm_rel_hi(addr))) { + ISAFUNC(uasm_i_dsll)(buf, rs, rs, 16); + ISAFUNC(uasm_i_daddiu)(buf, rs, rs, + ISAFUNC(uasm_rel_hi)(addr)); + ISAFUNC(uasm_i_dsll)(buf, rs, rs, 16); } else - uasm_i_dsll32(buf, rs, rs, 0); + ISAFUNC(uasm_i_dsll32)(buf, rs, rs, 0); } else - uasm_i_lui(buf, rs, uasm_rel_hi(addr)); + ISAFUNC(uasm_i_lui)(buf, rs, ISAFUNC(uasm_rel_hi(addr))); } -UASM_EXPORT_SYMBOL(UASM_i_LA_mostly); +UASM_EXPORT_SYMBOL(ISAFUNC(UASM_i_LA_mostly)); -void __uasminit UASM_i_LA(u32 **buf, unsigned int rs, long addr) +void __uasminit ISAFUNC(UASM_i_LA)(u32 **buf, unsigned int rs, long addr) { - UASM_i_LA_mostly(buf, rs, addr); - if (uasm_rel_lo(addr)) { - if (!uasm_in_compat_space_p(addr)) - uasm_i_daddiu(buf, rs, rs, uasm_rel_lo(addr)); + ISAFUNC(UASM_i_LA_mostly)(buf, rs, addr); + if (ISAFUNC(uasm_rel_lo(addr))) { + if (!ISAFUNC(uasm_in_compat_space_p)(addr)) + ISAFUNC(uasm_i_daddiu)(buf, rs, rs, + ISAFUNC(uasm_rel_lo(addr))); else - uasm_i_addiu(buf, rs, rs, uasm_rel_lo(addr)); + ISAFUNC(uasm_i_addiu)(buf, rs, rs, + ISAFUNC(uasm_rel_lo(addr))); } } -UASM_EXPORT_SYMBOL(UASM_i_LA); +UASM_EXPORT_SYMBOL(ISAFUNC(UASM_i_LA)); /* Handle relocations. */ void __uasminit -uasm_r_mips_pc16(struct uasm_reloc **rel, u32 *addr, int lid) +ISAFUNC(uasm_r_mips_pc16)(struct uasm_reloc **rel, u32 *addr, int lid) { (*rel)->addr = addr; (*rel)->type = R_MIPS_PC16; (*rel)->lab = lid; (*rel)++; } -UASM_EXPORT_SYMBOL(uasm_r_mips_pc16); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_r_mips_pc16)); static inline void __uasminit -__resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab) -{ - long laddr = (long)lab->addr; - long raddr = (long)rel->addr; - - switch (rel->type) { - case R_MIPS_PC16: - *rel->addr |= build_bimm(laddr - (raddr + 4)); - break; - - default: - panic("Unsupported Micro-assembler relocation %d", - rel->type); - } -} +__resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab); void __uasminit -uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab) +ISAFUNC(uasm_resolve_relocs)(struct uasm_reloc *rel, struct uasm_label *lab) { struct uasm_label *l; @@ -579,40 +409,40 @@ uasm_resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab) if (rel->lab == l->lab) __resolve_relocs(rel, l); } -UASM_EXPORT_SYMBOL(uasm_resolve_relocs); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_resolve_relocs)); void __uasminit -uasm_move_relocs(struct uasm_reloc *rel, u32 *first, u32 *end, long off) +ISAFUNC(uasm_move_relocs)(struct uasm_reloc *rel, u32 *first, u32 *end, long off) { for (; rel->lab != UASM_LABEL_INVALID; rel++) if (rel->addr >= first && rel->addr < end) rel->addr += off; } -UASM_EXPORT_SYMBOL(uasm_move_relocs); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_move_relocs)); void __uasminit -uasm_move_labels(struct uasm_label *lab, u32 *first, u32 *end, long off) +ISAFUNC(uasm_move_labels)(struct uasm_label *lab, u32 *first, u32 *end, long off) { for (; lab->lab != UASM_LABEL_INVALID; lab++) if (lab->addr >= first && lab->addr < end) lab->addr += off; } -UASM_EXPORT_SYMBOL(uasm_move_labels); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_move_labels)); void __uasminit -uasm_copy_handler(struct uasm_reloc *rel, struct uasm_label *lab, u32 *first, +ISAFUNC(uasm_copy_handler)(struct uasm_reloc *rel, struct uasm_label *lab, u32 *first, u32 *end, u32 *target) { long off = (long)(target - first); memcpy(target, first, (end - first) * sizeof(u32)); - uasm_move_relocs(rel, first, end, off); - uasm_move_labels(lab, first, end, off); + ISAFUNC(uasm_move_relocs(rel, first, end, off)); + ISAFUNC(uasm_move_labels(lab, first, end, off)); } -UASM_EXPORT_SYMBOL(uasm_copy_handler); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_copy_handler)); -int __uasminit uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr) +int __uasminit ISAFUNC(uasm_insn_has_bdelay)(struct uasm_reloc *rel, u32 *addr) { for (; rel->lab != UASM_LABEL_INVALID; rel++) { if (rel->addr == addr @@ -623,88 +453,88 @@ int __uasminit uasm_insn_has_bdelay(struct uasm_reloc *rel, u32 *addr) return 0; } -UASM_EXPORT_SYMBOL(uasm_insn_has_bdelay); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_insn_has_bdelay)); /* Convenience functions for labeled branches. */ void __uasminit -uasm_il_bltz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid) +ISAFUNC(uasm_il_bltz)(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid) { uasm_r_mips_pc16(r, *p, lid); - uasm_i_bltz(p, reg, 0); + ISAFUNC(uasm_i_bltz)(p, reg, 0); } -UASM_EXPORT_SYMBOL(uasm_il_bltz); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bltz)); void __uasminit -uasm_il_b(u32 **p, struct uasm_reloc **r, int lid) +ISAFUNC(uasm_il_b)(u32 **p, struct uasm_reloc **r, int lid) { uasm_r_mips_pc16(r, *p, lid); - uasm_i_b(p, 0); + ISAFUNC(uasm_i_b)(p, 0); } -UASM_EXPORT_SYMBOL(uasm_il_b); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_b)); void __uasminit -uasm_il_beqz(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid) +ISAFUNC(uasm_il_beqz)(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid) { uasm_r_mips_pc16(r, *p, lid); - uasm_i_beqz(p, reg, 0); + ISAFUNC(uasm_i_beqz)(p, reg, 0); } -UASM_EXPORT_SYMBOL(uasm_il_beqz); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beqz)); void __uasminit -uasm_il_beqzl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid) +ISAFUNC(uasm_il_beqzl)(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid) { uasm_r_mips_pc16(r, *p, lid); - uasm_i_beqzl(p, reg, 0); + ISAFUNC(uasm_i_beqzl)(p, reg, 0); } -UASM_EXPORT_SYMBOL(uasm_il_beqzl); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_beqzl)); void __uasminit -uasm_il_bne(u32 **p, struct uasm_reloc **r, unsigned int reg1, +ISAFUNC(uasm_il_bne)(u32 **p, struct uasm_reloc **r, unsigned int reg1, unsigned int reg2, int lid) { uasm_r_mips_pc16(r, *p, lid); - uasm_i_bne(p, reg1, reg2, 0); + ISAFUNC(uasm_i_bne)(p, reg1, reg2, 0); } -UASM_EXPORT_SYMBOL(uasm_il_bne); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bne)); void __uasminit -uasm_il_bnez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid) +ISAFUNC(uasm_il_bnez)(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid) { uasm_r_mips_pc16(r, *p, lid); - uasm_i_bnez(p, reg, 0); + ISAFUNC(uasm_i_bnez)(p, reg, 0); } -UASM_EXPORT_SYMBOL(uasm_il_bnez); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bnez)); void __uasminit -uasm_il_bgezl(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid) +ISAFUNC(uasm_il_bgezl)(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid) { uasm_r_mips_pc16(r, *p, lid); - uasm_i_bgezl(p, reg, 0); + ISAFUNC(uasm_i_bgezl)(p, reg, 0); } -UASM_EXPORT_SYMBOL(uasm_il_bgezl); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bgezl)); void __uasminit -uasm_il_bgez(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid) +ISAFUNC(uasm_il_bgez)(u32 **p, struct uasm_reloc **r, unsigned int reg, int lid) { uasm_r_mips_pc16(r, *p, lid); - uasm_i_bgez(p, reg, 0); + ISAFUNC(uasm_i_bgez)(p, reg, 0); } -UASM_EXPORT_SYMBOL(uasm_il_bgez); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bgez)); void __uasminit -uasm_il_bbit0(u32 **p, struct uasm_reloc **r, unsigned int reg, +ISAFUNC(uasm_il_bbit0)(u32 **p, struct uasm_reloc **r, unsigned int reg, unsigned int bit, int lid) { uasm_r_mips_pc16(r, *p, lid); - uasm_i_bbit0(p, reg, bit, 0); + ISAFUNC(uasm_i_bbit0)(p, reg, bit, 0); } -UASM_EXPORT_SYMBOL(uasm_il_bbit0); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bbit0)); void __uasminit -uasm_il_bbit1(u32 **p, struct uasm_reloc **r, unsigned int reg, +ISAFUNC(uasm_il_bbit1)(u32 **p, struct uasm_reloc **r, unsigned int reg, unsigned int bit, int lid) { uasm_r_mips_pc16(r, *p, lid); - uasm_i_bbit1(p, reg, bit, 0); + ISAFUNC(uasm_i_bbit1)(p, reg, bit, 0); } -UASM_EXPORT_SYMBOL(uasm_il_bbit1); +UASM_EXPORT_SYMBOL(ISAFUNC(uasm_il_bbit1)); -- cgit v0.10.2 From a6a4834cdbef23a7db16e7598c8c6e427ac82531 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 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 (cherry picked from commit 5f011a866afbd03a5379f67f4e70e5efbdfc16e9) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 51244bf..03de102 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -354,6 +354,7 @@ config MIPS_SEAD3 select SYS_SUPPORTS_BIG_ENDIAN select SYS_SUPPORTS_LITTLE_ENDIAN select SYS_SUPPORTS_SMARTMIPS + select SYS_SUPPORTS_MICROMIPS select USB_ARCH_HAS_EHCI select USB_EHCI_BIG_ENDIAN_DESC select USB_EHCI_BIG_ENDIAN_MMIO @@ -2102,6 +2103,9 @@ config SYS_SUPPORTS_HIGHMEM config SYS_SUPPORTS_SMARTMIPS bool +config SYS_SUPPORTS_MICROMIPS + bool + config ARCH_FLATMEM_ENABLE def_bool y depends on !NUMA && !CPU_LOONGSON2 diff --git a/arch/mips/include/asm/uasm.h b/arch/mips/include/asm/uasm.h index f7d8f15..f924b87 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 diff --git a/arch/mips/mm/Makefile b/arch/mips/mm/Makefile index 9e90c21..e87aae1 100644 --- a/arch/mips/mm/Makefile +++ b/arch/mips/mm/Makefile @@ -22,3 +22,5 @@ obj-$(CONFIG_IP22_CPU_SCACHE) += sc-ip22.o obj-$(CONFIG_R5000_CPU_SCACHE) += sc-r5k.o obj-$(CONFIG_RM7000_CPU_SCACHE) += sc-rm7k.o obj-$(CONFIG_MIPS_CPU_SCACHE) += sc-mips.o + +obj-$(CONFIG_SYS_SUPPORTS_MICROMIPS) += uasm-micromips.o diff --git a/arch/mips/mm/uasm-micromips.c b/arch/mips/mm/uasm-micromips.c new file mode 100644 index 0000000..476d50c --- /dev/null +++ b/arch/mips/mm/uasm-micromips.c @@ -0,0 +1,220 @@ +/* + * 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. + * + * A small micro-assembler. It is intentionally kept simple, does only + * support a subset of instructions, and does not try to hide pipeline + * effects like branch delay slots. + * + * Copyright (C) 2004, 2005, 2006, 2008 Thiemo Seufer + * Copyright (C) 2005, 2007 Maciej W. Rozycki + * Copyright (C) 2006 Ralf Baechle (ralf@linux-mips.org) + * Copyright (C) 2012, 2013 MIPS Technologies, Inc. All rights reserved. + */ + +#include +#include +#include + +#include +#include +#include +#define UASM_ISA _UASM_ISA_MICROMIPS +#include + +#define RS_MASK 0x1f +#define RS_SH 16 +#define RT_MASK 0x1f +#define RT_SH 21 +#define SCIMM_MASK 0x3ff +#define SCIMM_SH 16 + +/* This macro sets the non-variable bits of an instruction. */ +#define M(a, b, c, d, e, f) \ + ((a) << OP_SH \ + | (b) << RT_SH \ + | (c) << RS_SH \ + | (d) << RD_SH \ + | (e) << RE_SH \ + | (f) << FUNC_SH) + +/* Define these when we are not the ISA the kernel is being compiled with. */ +#ifndef CONFIG_CPU_MICROMIPS +#define MM_uasm_i_b(buf, off) ISAOPC(_beq)(buf, 0, 0, off) +#define MM_uasm_i_beqz(buf, rs, off) ISAOPC(_beq)(buf, rs, 0, off) +#define MM_uasm_i_beqzl(buf, rs, off) ISAOPC(_beql)(buf, rs, 0, off) +#define MM_uasm_i_bnez(buf, rs, off) ISAOPC(_bne)(buf, rs, 0, off) +#endif + +#include "uasm.c" + +static struct insn insn_table_MM[] __uasminitdata = { + { insn_addu, M(mm_pool32a_op, 0, 0, 0, 0, mm_addu32_op), RT | RS | RD }, + { insn_addiu, M(mm_addiu32_op, 0, 0, 0, 0, 0), RT | RS | SIMM }, + { insn_and, M(mm_pool32a_op, 0, 0, 0, 0, mm_and_op), RT | RS | RD }, + { insn_andi, M(mm_andi32_op, 0, 0, 0, 0, 0), RT | RS | UIMM }, + { insn_beq, M(mm_beq32_op, 0, 0, 0, 0, 0), RS | RT | BIMM }, + { insn_beql, 0, 0 }, + { insn_bgez, M(mm_pool32i_op, mm_bgez_op, 0, 0, 0, 0), RS | BIMM }, + { insn_bgezl, 0, 0 }, + { insn_bltz, M(mm_pool32i_op, mm_bltz_op, 0, 0, 0, 0), RS | BIMM }, + { insn_bltzl, 0, 0 }, + { insn_bne, M(mm_bne32_op, 0, 0, 0, 0, 0), RT | RS | BIMM }, + { insn_cache, M(mm_pool32b_op, 0, 0, mm_cache_func, 0, 0), RT | RS | SIMM }, + { insn_daddu, 0, 0 }, + { insn_daddiu, 0, 0 }, + { insn_dmfc0, 0, 0 }, + { insn_dmtc0, 0, 0 }, + { insn_dsll, 0, 0 }, + { insn_dsll32, 0, 0 }, + { insn_dsra, 0, 0 }, + { insn_dsrl, 0, 0 }, + { insn_dsrl32, 0, 0 }, + { insn_drotr, 0, 0 }, + { insn_drotr32, 0, 0 }, + { insn_dsubu, 0, 0 }, + { insn_eret, M(mm_pool32a_op, 0, 0, 0, mm_eret_op, mm_pool32axf_op), 0 }, + { insn_ins, M(mm_pool32a_op, 0, 0, 0, 0, mm_ins_op), RT | RS | RD | RE }, + { insn_ext, M(mm_pool32a_op, 0, 0, 0, 0, mm_ext_op), RT | RS | RD | RE }, + { insn_j, M(mm_j32_op, 0, 0, 0, 0, 0), JIMM }, + { insn_jal, M(mm_jal32_op, 0, 0, 0, 0, 0), JIMM }, + { insn_jr, M(mm_pool32a_op, 0, 0, 0, mm_jalr_op, mm_pool32axf_op), RS }, + { insn_ld, 0, 0 }, + { insn_ll, M(mm_pool32c_op, 0, 0, (mm_ll_func << 1), 0, 0), RS | RT | SIMM }, + { insn_lld, 0, 0 }, + { insn_lui, M(mm_pool32i_op, mm_lui_op, 0, 0, 0, 0), RS | SIMM }, + { insn_lw, M(mm_lw32_op, 0, 0, 0, 0, 0), RT | RS | SIMM }, + { insn_mfc0, M(mm_pool32a_op, 0, 0, 0, mm_mfc0_op, mm_pool32axf_op), RT | RS | RD }, + { insn_mtc0, M(mm_pool32a_op, 0, 0, 0, mm_mtc0_op, mm_pool32axf_op), RT | RS | RD }, + { insn_or, M(mm_pool32a_op, 0, 0, 0, 0, mm_or32_op), RT | RS | RD }, + { insn_ori, M(mm_ori32_op, 0, 0, 0, 0, 0), RT | RS | UIMM }, + { insn_pref, M(mm_pool32c_op, 0, 0, (mm_pref_func << 1), 0, 0), RT | RS | SIMM }, + { insn_rfe, 0, 0 }, + { insn_sc, M(mm_pool32c_op, 0, 0, (mm_sc_func << 1), 0, 0), RT | RS | SIMM }, + { insn_scd, 0, 0 }, + { insn_sd, 0, 0 }, + { insn_sll, M(mm_pool32a_op, 0, 0, 0, 0, mm_sll32_op), RT | RS | RD }, + { insn_sra, M(mm_pool32a_op, 0, 0, 0, 0, mm_sra_op), RT | RS | RD }, + { insn_srl, M(mm_pool32a_op, 0, 0, 0, 0, mm_srl32_op), RT | RS | RD }, + { insn_rotr, M(mm_pool32a_op, 0, 0, 0, 0, mm_rotr_op), RT | RS | RD }, + { insn_subu, M(mm_pool32a_op, 0, 0, 0, 0, mm_subu32_op), RT | RS | RD }, + { insn_sw, M(mm_sw32_op, 0, 0, 0, 0, 0), RT | RS | SIMM }, + { insn_tlbp, M(mm_pool32a_op, 0, 0, 0, mm_tlbp_op, mm_pool32axf_op), 0 }, + { insn_tlbr, M(mm_pool32a_op, 0, 0, 0, mm_tlbr_op, mm_pool32axf_op), 0 }, + { insn_tlbwi, M(mm_pool32a_op, 0, 0, 0, mm_tlbwi_op, mm_pool32axf_op), 0 }, + { insn_tlbwr, M(mm_pool32a_op, 0, 0, 0, mm_tlbwr_op, mm_pool32axf_op), 0 }, + { insn_xor, M(mm_pool32a_op, 0, 0, 0, 0, mm_xor32_op), RT | RS | RD }, + { insn_xori, M(mm_xori32_op, 0, 0, 0, 0, 0), RT | RS | UIMM }, + { insn_dins, 0, 0 }, + { insn_dinsm, 0, 0 }, + { insn_syscall, M(mm_pool32a_op, 0, 0, 0, mm_syscall_op, mm_pool32axf_op), SCIMM}, + { insn_bbit0, 0, 0 }, + { insn_bbit1, 0, 0 }, + { insn_lwx, 0, 0 }, + { insn_ldx, 0, 0 }, + { insn_invalid, 0, 0 } +}; + +#undef M + +static inline __uasminit u32 build_bimm(s32 arg) +{ + WARN(arg > 0xffff || arg < -0x10000, + KERN_WARNING "Micro-assembler field overflow\n"); + + WARN(arg & 0x3, KERN_WARNING "Invalid micro-assembler branch target\n"); + + return ((arg < 0) ? (1 << 15) : 0) | ((arg >> 1) & 0x7fff); +} + +static inline __uasminit u32 build_jimm(u32 arg) +{ + WARN(arg & ~(JIMM_MASK << 2), + KERN_WARNING "Micro-assembler field overflow\n"); + + return (arg >> 1) & JIMM_MASK; +} + +/* + * The order of opcode arguments is implicitly left to right, + * starting with RS and ending with FUNC or IMM. + */ +static void __uasminit build_insn(u32 **buf, enum opcode opc, ...) +{ + struct insn *ip = NULL; + unsigned int i; + va_list ap; + u32 op; + + for (i = 0; insn_table_MM[i].opcode != insn_invalid; i++) + if (insn_table_MM[i].opcode == opc) { + ip = &insn_table_MM[i]; + break; + } + + if (!ip || (opc == insn_daddiu && r4k_daddiu_bug())) + panic("Unsupported Micro-assembler instruction %d", opc); + + op = ip->match; + va_start(ap, opc); + if (ip->fields & RS) { + if (opc == insn_mfc0 || opc == insn_mtc0) + op |= build_rt(va_arg(ap, u32)); + else + op |= build_rs(va_arg(ap, u32)); + } + if (ip->fields & RT) { + if (opc == insn_mfc0 || opc == insn_mtc0) + op |= build_rs(va_arg(ap, u32)); + else + op |= build_rt(va_arg(ap, u32)); + } + if (ip->fields & RD) + op |= build_rd(va_arg(ap, u32)); + if (ip->fields & RE) + op |= build_re(va_arg(ap, u32)); + if (ip->fields & SIMM) + op |= build_simm(va_arg(ap, s32)); + if (ip->fields & UIMM) + op |= build_uimm(va_arg(ap, u32)); + if (ip->fields & BIMM) + op |= build_bimm(va_arg(ap, s32)); + if (ip->fields & JIMM) + op |= build_jimm(va_arg(ap, u32)); + if (ip->fields & FUNC) + op |= build_func(va_arg(ap, u32)); + if (ip->fields & SET) + op |= build_set(va_arg(ap, u32)); + if (ip->fields & SCIMM) + op |= build_scimm(va_arg(ap, u32)); + va_end(ap); + +#ifdef CONFIG_CPU_LITTLE_ENDIAN + **buf = ((op & 0xffff) << 16) | (op >> 16); +#else + **buf = op; +#endif + (*buf)++; +} + +static inline void __uasminit +__resolve_relocs(struct uasm_reloc *rel, struct uasm_label *lab) +{ + long laddr = (long)lab->addr; + long raddr = (long)rel->addr; + + switch (rel->type) { + case R_MIPS_PC16: +#ifdef CONFIG_CPU_LITTLE_ENDIAN + *rel->addr |= (build_bimm(laddr - (raddr + 4)) << 16); +#else + *rel->addr |= build_bimm(laddr - (raddr + 4)); +#endif + break; + + default: + panic("Unsupported Micro-assembler relocation %d", + rel->type); + } +} -- cgit v0.10.2 From bfd08baae4591eca753afe3c9c63c583c4d4c78a Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 ] Signed-off-by: Steven J. Hill Cc: linux-mips@linux-mips.org Cc: cernekee@gmail.com Cc: kevink@paralogos.com Cc: ddaney.cavm@gmail.com Cc: Sergei Shtylyov Patchwork: https://patchwork.linux-mips.org/patch/4924/ Signed-off-by: Ralf Baechle (cherry picked from commit 49df26472338b935fd5781bf94a77a88b148a716) diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h index 0da44d4..f64e17f 100644 --- a/arch/mips/include/asm/mipsregs.h +++ b/arch/mips/include/asm/mipsregs.h @@ -623,6 +623,24 @@ #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 * performance counter number encoded into bits 1 ... 5 of the instruction. -- cgit v0.10.2 From c34c09c81d659e13e15947580198fa652af3ca1a Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Mon, 25 Mar 2013 11:42:03 -0500 Subject: MIPS: malta: Add new Malta config files. Add in new Malta config files for SMVP, SMTC, and APRP. Also update the original 'malta_defconfig' config file. Signed-off-by: Steven J. Hill diff --git a/arch/mips/configs/malta_defconfig b/arch/mips/configs/malta_defconfig index cd732e5..ce1d3ee 100644 --- a/arch/mips/configs/malta_defconfig +++ b/arch/mips/configs/malta_defconfig @@ -2,30 +2,21 @@ CONFIG_MIPS_MALTA=y CONFIG_CPU_LITTLE_ENDIAN=y CONFIG_CPU_MIPS32_R2=y CONFIG_MIPS_MT_SMP=y -CONFIG_NO_HZ=y -CONFIG_HIGH_RES_TIMERS=y CONFIG_HZ_100=y -CONFIG_EXPERIMENTAL=y CONFIG_SYSVIPC=y +CONFIG_NO_HZ=y +CONFIG_HIGH_RES_TIMERS=y CONFIG_LOG_BUF_SHIFT=15 -CONFIG_SYSFS_DEPRECATED_V2=y -CONFIG_RELAY=y CONFIG_NAMESPACES=y -CONFIG_UTS_NS=y -CONFIG_IPC_NS=y -CONFIG_PID_NS=y -# CONFIG_CC_OPTIMIZE_FOR_SIZE is not set +CONFIG_RELAY=y CONFIG_EXPERT=y -# CONFIG_SYSCTL_SYSCALL is not set # CONFIG_COMPAT_BRK is not set CONFIG_SLAB=y CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_MODVERSIONS=y CONFIG_MODULE_SRCVERSION_ALL=y -# CONFIG_BLK_DEV_BSG is not set CONFIG_PCI=y -CONFIG_PM=y CONFIG_PACKET=y CONFIG_UNIX=y CONFIG_XFRM_USER=m @@ -41,8 +32,6 @@ CONFIG_IP_PNP=y CONFIG_IP_PNP_DHCP=y CONFIG_IP_PNP_BOOTP=y CONFIG_NET_IPIP=m -CONFIG_NET_IPGRE=m -CONFIG_NET_IPGRE_BROADCAST=y CONFIG_IP_MROUTE=y CONFIG_IP_PIMSM_V1=y CONFIG_IP_PIMSM_V2=y @@ -65,7 +54,6 @@ CONFIG_IPV6_MROUTE=y CONFIG_IPV6_PIMSM_V2=y CONFIG_NETWORK_SECMARK=y CONFIG_NETFILTER=y -CONFIG_NETFILTER_NETLINK_QUEUE=m CONFIG_NF_CONNTRACK=m CONFIG_NF_CONNTRACK_SECMARK=y CONFIG_NF_CONNTRACK_EVENTS=y @@ -136,23 +124,15 @@ CONFIG_IP_VS_DH=m CONFIG_IP_VS_SH=m CONFIG_IP_VS_SED=m CONFIG_IP_VS_NQ=m -CONFIG_IP_VS_FTP=m CONFIG_NF_CONNTRACK_IPV4=m CONFIG_IP_NF_QUEUE=m CONFIG_IP_NF_IPTABLES=m -CONFIG_IP_NF_MATCH_ADDRTYPE=m CONFIG_IP_NF_MATCH_AH=m CONFIG_IP_NF_MATCH_ECN=m CONFIG_IP_NF_MATCH_TTL=m CONFIG_IP_NF_FILTER=m CONFIG_IP_NF_TARGET_REJECT=m -CONFIG_IP_NF_TARGET_LOG=m CONFIG_IP_NF_TARGET_ULOG=m -CONFIG_NF_NAT=m -CONFIG_IP_NF_TARGET_MASQUERADE=m -CONFIG_IP_NF_TARGET_NETMAP=m -CONFIG_IP_NF_TARGET_REDIRECT=m -CONFIG_NF_NAT_SNMP_BASIC=m CONFIG_IP_NF_MANGLE=m CONFIG_IP_NF_TARGET_CLUSTERIP=m CONFIG_IP_NF_TARGET_ECN=m @@ -162,8 +142,6 @@ CONFIG_IP_NF_ARPTABLES=m CONFIG_IP_NF_ARPFILTER=m CONFIG_IP_NF_ARP_MANGLE=m CONFIG_NF_CONNTRACK_IPV6=m -CONFIG_IP6_NF_QUEUE=m -CONFIG_IP6_NF_IPTABLES=m CONFIG_IP6_NF_MATCH_AH=m CONFIG_IP6_NF_MATCH_EUI64=m CONFIG_IP6_NF_MATCH_FRAG=m @@ -173,7 +151,6 @@ CONFIG_IP6_NF_MATCH_IPV6HEADER=m CONFIG_IP6_NF_MATCH_MH=m CONFIG_IP6_NF_MATCH_RT=m CONFIG_IP6_NF_TARGET_HL=m -CONFIG_IP6_NF_TARGET_LOG=m CONFIG_IP6_NF_FILTER=m CONFIG_IP6_NF_TARGET_REJECT=m CONFIG_IP6_NF_MANGLE=m @@ -247,12 +224,10 @@ CONFIG_MAC80211=m CONFIG_MAC80211_RC_PID=y CONFIG_MAC80211_RC_DEFAULT_PID=y CONFIG_MAC80211_MESH=y -CONFIG_MAC80211_LEDS=y CONFIG_RFKILL=m CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" CONFIG_CONNECTOR=m CONFIG_MTD=y -CONFIG_MTD_PARTITIONS=y CONFIG_MTD_CHAR=y CONFIG_MTD_BLOCK=y CONFIG_MTD_OOPS=m @@ -271,7 +246,6 @@ CONFIG_BLK_DEV_NBD=m CONFIG_BLK_DEV_RAM=y CONFIG_CDROM_PKTCDVD=m CONFIG_ATA_OVER_ETH=m -# CONFIG_MISC_DEVICES is not set CONFIG_IDE=y CONFIG_BLK_DEV_IDECD=y CONFIG_IDE_GENERIC=y @@ -317,13 +291,19 @@ CONFIG_DM_MIRROR=m CONFIG_DM_ZERO=m CONFIG_DM_MULTIPATH=m CONFIG_NETDEVICES=y -CONFIG_IFB=m -CONFIG_DUMMY=m CONFIG_BONDING=m -CONFIG_MACVLAN=m +CONFIG_DUMMY=m CONFIG_EQUALIZER=m +CONFIG_IFB=m +CONFIG_MACVLAN=m CONFIG_TUN=m CONFIG_VETH=m +# CONFIG_NET_VENDOR_3COM is not set +CONFIG_PCNET32=y +CONFIG_CHELSIO_T3=m +CONFIG_AX88796=m +CONFIG_NETXEN_NIC=m +CONFIG_TC35815=m CONFIG_MARVELL_PHY=m CONFIG_DAVICOM_PHY=m CONFIG_QSEMI_PHY=m @@ -334,14 +314,6 @@ CONFIG_SMSC_PHY=m CONFIG_BROADCOM_PHY=m CONFIG_ICPLUS_PHY=m CONFIG_REALTEK_PHY=m -CONFIG_MDIO_BITBANG=m -CONFIG_NET_ETHERNET=y -CONFIG_AX88796=m -CONFIG_NET_PCI=y -CONFIG_PCNET32=y -CONFIG_TC35815=m -CONFIG_CHELSIO_T3=m -CONFIG_NETXEN_NIC=m CONFIG_ATMEL=m CONFIG_PCI_ATMEL=m CONFIG_PRISM54=m @@ -352,15 +324,7 @@ CONFIG_HOSTAP_PLX=m CONFIG_HOSTAP_PCI=m CONFIG_IPW2100=m CONFIG_IPW2100_MONITOR=y -CONFIG_IPW2200=m -CONFIG_IPW2200_MONITOR=y -CONFIG_IPW2200_PROMISCUOUS=y -CONFIG_IPW2200_QOS=y CONFIG_LIBERTAS=m -CONFIG_HERMES=m -CONFIG_PLX_HERMES=m -CONFIG_TMD_HERMES=m -CONFIG_NORTEL_HERMES=m # CONFIG_INPUT_KEYBOARD is not set # CONFIG_INPUT_MOUSE is not set # CONFIG_SERIO_I8042 is not set @@ -373,12 +337,6 @@ CONFIG_FB_CIRRUS=y # CONFIG_VGA_CONSOLE is not set CONFIG_FRAMEBUFFER_CONSOLE=y CONFIG_HID=m -CONFIG_LEDS_CLASS=y -CONFIG_LEDS_TRIGGER_TIMER=m -CONFIG_LEDS_TRIGGER_IDE_DISK=y -CONFIG_LEDS_TRIGGER_HEARTBEAT=m -CONFIG_LEDS_TRIGGER_BACKLIGHT=m -CONFIG_LEDS_TRIGGER_DEFAULT_ON=m CONFIG_RTC_CLASS=y CONFIG_RTC_DRV_CMOS=y CONFIG_UIO=m @@ -398,7 +356,6 @@ CONFIG_XFS_QUOTA=y CONFIG_XFS_POSIX_ACL=y CONFIG_QUOTA=y CONFIG_QFMT_V2=y -CONFIG_AUTOFS_FS=y CONFIG_FUSE_FS=m CONFIG_ISO9660_FS=m CONFIG_JOLIET=y @@ -425,7 +382,6 @@ CONFIG_ROMFS_FS=m CONFIG_SYSV_FS=m CONFIG_UFS_FS=m CONFIG_NFS_FS=y -CONFIG_NFS_V3=y CONFIG_ROOT_NFS=y CONFIG_NFSD=y CONFIG_NFSD_V3=y @@ -466,7 +422,6 @@ CONFIG_NLS_ISO8859_14=m CONFIG_NLS_ISO8859_15=m CONFIG_NLS_KOI8_R=m CONFIG_NLS_KOI8_U=m -# CONFIG_RCU_CPU_STALL_DETECTOR is not set CONFIG_CRYPTO_NULL=m CONFIG_CRYPTO_CRYPTD=m CONFIG_CRYPTO_LRW=m diff --git a/arch/mips/configs/maltaaprp_defconfig b/arch/mips/configs/maltaaprp_defconfig new file mode 100644 index 0000000..93057a7 --- /dev/null +++ b/arch/mips/configs/maltaaprp_defconfig @@ -0,0 +1,195 @@ +CONFIG_MIPS_MALTA=y +CONFIG_CPU_LITTLE_ENDIAN=y +CONFIG_CPU_MIPS32_R2=y +CONFIG_MIPS_VPE_LOADER=y +CONFIG_MIPS_VPE_APSP_API=y +CONFIG_HZ_100=y +CONFIG_LOCALVERSION="aprp" +CONFIG_SYSVIPC=y +CONFIG_POSIX_MQUEUE=y +CONFIG_AUDIT=y +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y +CONFIG_LOG_BUF_SHIFT=15 +CONFIG_SYSCTL_SYSCALL=y +CONFIG_EMBEDDED=y +CONFIG_SLAB=y +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +CONFIG_MODVERSIONS=y +CONFIG_MODULE_SRCVERSION_ALL=y +# CONFIG_BLK_DEV_BSG is not set +CONFIG_PCI=y +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_XFRM_USER=m +CONFIG_NET_KEY=y +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +CONFIG_IP_ADVANCED_ROUTER=y +CONFIG_IP_MULTIPLE_TABLES=y +CONFIG_IP_ROUTE_MULTIPATH=y +CONFIG_IP_ROUTE_VERBOSE=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +CONFIG_NET_IPIP=m +CONFIG_IP_MROUTE=y +CONFIG_IP_PIMSM_V1=y +CONFIG_IP_PIMSM_V2=y +CONFIG_SYN_COOKIES=y +CONFIG_INET_AH=m +CONFIG_INET_ESP=m +CONFIG_INET_IPCOMP=m +# CONFIG_INET_LRO is not set +CONFIG_IPV6_PRIVACY=y +CONFIG_INET6_AH=m +CONFIG_INET6_ESP=m +CONFIG_INET6_IPCOMP=m +CONFIG_IPV6_TUNNEL=m +CONFIG_BRIDGE=m +CONFIG_VLAN_8021Q=m +CONFIG_ATALK=m +CONFIG_DEV_APPLETALK=m +CONFIG_IPDDP=m +CONFIG_IPDDP_ENCAP=y +CONFIG_IPDDP_DECAP=y +CONFIG_NET_SCHED=y +CONFIG_NET_SCH_CBQ=m +CONFIG_NET_SCH_HTB=m +CONFIG_NET_SCH_HFSC=m +CONFIG_NET_SCH_PRIO=m +CONFIG_NET_SCH_RED=m +CONFIG_NET_SCH_SFQ=m +CONFIG_NET_SCH_TEQL=m +CONFIG_NET_SCH_TBF=m +CONFIG_NET_SCH_GRED=m +CONFIG_NET_SCH_DSMARK=m +CONFIG_NET_SCH_NETEM=m +CONFIG_NET_SCH_INGRESS=m +CONFIG_NET_CLS_BASIC=m +CONFIG_NET_CLS_TCINDEX=m +CONFIG_NET_CLS_ROUTE4=m +CONFIG_NET_CLS_FW=m +CONFIG_NET_CLS_U32=m +CONFIG_NET_CLS_RSVP=m +CONFIG_NET_CLS_RSVP6=m +CONFIG_NET_CLS_ACT=y +CONFIG_NET_ACT_POLICE=y +CONFIG_NET_CLS_IND=y +# CONFIG_WIRELESS is not set +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_CRYPTOLOOP=m +CONFIG_IDE=y +# CONFIG_IDE_PROC_FS is not set +# CONFIG_IDEPCI_PCIBUS_ORDER is not set +CONFIG_BLK_DEV_GENERIC=y +CONFIG_BLK_DEV_PIIX=y +CONFIG_SCSI=y +CONFIG_BLK_DEV_SD=y +CONFIG_CHR_DEV_SG=y +# CONFIG_SCSI_LOWLEVEL is not set +CONFIG_NETDEVICES=y +# CONFIG_NET_VENDOR_3COM is not set +# CONFIG_NET_VENDOR_ADAPTEC is not set +# CONFIG_NET_VENDOR_ALTEON is not set +CONFIG_PCNET32=y +# CONFIG_NET_VENDOR_ATHEROS is not set +# CONFIG_NET_VENDOR_BROADCOM is not set +# CONFIG_NET_VENDOR_BROCADE is not set +# CONFIG_NET_VENDOR_CHELSIO is not set +# CONFIG_NET_VENDOR_CISCO is not set +# CONFIG_NET_VENDOR_DEC is not set +# CONFIG_NET_VENDOR_DLINK is not set +# CONFIG_NET_VENDOR_EMULEX is not set +# CONFIG_NET_VENDOR_EXAR is not set +# CONFIG_NET_VENDOR_HP is not set +# CONFIG_NET_VENDOR_INTEL is not set +# CONFIG_NET_VENDOR_MARVELL is not set +# CONFIG_NET_VENDOR_MELLANOX is not set +# CONFIG_NET_VENDOR_MICREL is not set +# CONFIG_NET_VENDOR_MYRI is not set +# CONFIG_NET_VENDOR_NATSEMI is not set +# CONFIG_NET_VENDOR_NVIDIA is not set +# CONFIG_NET_VENDOR_OKI is not set +# CONFIG_NET_PACKET_ENGINE is not set +# CONFIG_NET_VENDOR_QLOGIC is not set +# CONFIG_NET_VENDOR_REALTEK is not set +# CONFIG_NET_VENDOR_RDC is not set +# CONFIG_NET_VENDOR_SEEQ is not set +# CONFIG_NET_VENDOR_SILAN is not set +# CONFIG_NET_VENDOR_SIS is not set +# CONFIG_NET_VENDOR_SMSC is not set +# CONFIG_NET_VENDOR_STMICRO is not set +# CONFIG_NET_VENDOR_SUN is not set +# CONFIG_NET_VENDOR_TEHUTI is not set +# CONFIG_NET_VENDOR_TI is not set +# CONFIG_NET_VENDOR_TOSHIBA is not set +# CONFIG_NET_VENDOR_VIA is not set +# CONFIG_WLAN is not set +# CONFIG_VT is not set +CONFIG_LEGACY_PTY_COUNT=16 +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_HW_RANDOM=y +# CONFIG_HWMON is not set +CONFIG_VIDEO_OUTPUT_CONTROL=m +CONFIG_FB=y +CONFIG_FIRMWARE_EDID=y +CONFIG_FB_MATROX=y +CONFIG_FB_MATROX_G=y +CONFIG_USB=y +CONFIG_USB_EHCI_HCD=y +# CONFIG_USB_EHCI_TT_NEWSCHED is not set +CONFIG_USB_UHCI_HCD=y +CONFIG_USB_STORAGE=y +CONFIG_NEW_LEDS=y +CONFIG_LEDS_CLASS=y +CONFIG_LEDS_TRIGGERS=y +CONFIG_LEDS_TRIGGER_TIMER=y +CONFIG_LEDS_TRIGGER_IDE_DISK=y +CONFIG_LEDS_TRIGGER_HEARTBEAT=y +CONFIG_LEDS_TRIGGER_BACKLIGHT=y +CONFIG_LEDS_TRIGGER_DEFAULT_ON=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_DRV_CMOS=y +CONFIG_EXT2_FS=y +CONFIG_EXT3_FS=y +# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set +CONFIG_XFS_FS=y +CONFIG_XFS_QUOTA=y +CONFIG_XFS_POSIX_ACL=y +CONFIG_QUOTA=y +CONFIG_QFMT_V2=y +CONFIG_MSDOS_FS=m +CONFIG_VFAT_FS=m +CONFIG_PROC_KCORE=y +CONFIG_TMPFS=y +CONFIG_NFS_FS=y +CONFIG_ROOT_NFS=y +CONFIG_CIFS=m +CONFIG_CIFS_WEAK_PW_HASH=y +CONFIG_CIFS_XATTR=y +CONFIG_CIFS_POSIX=y +CONFIG_NLS_CODEPAGE_437=m +CONFIG_NLS_ISO8859_1=m +# CONFIG_FTRACE is not set +CONFIG_CRYPTO_NULL=m +CONFIG_CRYPTO_PCBC=m +CONFIG_CRYPTO_HMAC=y +CONFIG_CRYPTO_MICHAEL_MIC=m +CONFIG_CRYPTO_SHA512=m +CONFIG_CRYPTO_TGR192=m +CONFIG_CRYPTO_WP512=m +CONFIG_CRYPTO_ANUBIS=m +CONFIG_CRYPTO_BLOWFISH=m +CONFIG_CRYPTO_CAST5=m +CONFIG_CRYPTO_CAST6=m +CONFIG_CRYPTO_KHAZAD=m +CONFIG_CRYPTO_SERPENT=m +CONFIG_CRYPTO_TEA=m +CONFIG_CRYPTO_TWOFISH=m +# CONFIG_CRYPTO_ANSI_CPRNG is not set +# CONFIG_CRYPTO_HW is not set diff --git a/arch/mips/configs/maltasmtc_defconfig b/arch/mips/configs/maltasmtc_defconfig new file mode 100644 index 0000000..4e54b75 --- /dev/null +++ b/arch/mips/configs/maltasmtc_defconfig @@ -0,0 +1,196 @@ +CONFIG_MIPS_MALTA=y +CONFIG_CPU_LITTLE_ENDIAN=y +CONFIG_CPU_MIPS32_R2=y +CONFIG_MIPS_MT_SMTC=y +# CONFIG_MIPS_MT_FPAFF is not set +CONFIG_NR_CPUS=9 +CONFIG_HZ_48=y +CONFIG_LOCALVERSION="smtc" +CONFIG_SYSVIPC=y +CONFIG_POSIX_MQUEUE=y +CONFIG_AUDIT=y +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y +CONFIG_LOG_BUF_SHIFT=15 +CONFIG_SYSCTL_SYSCALL=y +CONFIG_EMBEDDED=y +CONFIG_SLAB=y +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +CONFIG_MODVERSIONS=y +CONFIG_MODULE_SRCVERSION_ALL=y +# CONFIG_BLK_DEV_BSG is not set +CONFIG_PCI=y +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_XFRM_USER=m +CONFIG_NET_KEY=y +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +CONFIG_IP_ADVANCED_ROUTER=y +CONFIG_IP_MULTIPLE_TABLES=y +CONFIG_IP_ROUTE_MULTIPATH=y +CONFIG_IP_ROUTE_VERBOSE=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +CONFIG_NET_IPIP=m +CONFIG_IP_MROUTE=y +CONFIG_IP_PIMSM_V1=y +CONFIG_IP_PIMSM_V2=y +CONFIG_SYN_COOKIES=y +CONFIG_INET_AH=m +CONFIG_INET_ESP=m +CONFIG_INET_IPCOMP=m +# CONFIG_INET_LRO is not set +CONFIG_IPV6_PRIVACY=y +CONFIG_INET6_AH=m +CONFIG_INET6_ESP=m +CONFIG_INET6_IPCOMP=m +CONFIG_IPV6_TUNNEL=m +CONFIG_BRIDGE=m +CONFIG_VLAN_8021Q=m +CONFIG_ATALK=m +CONFIG_DEV_APPLETALK=m +CONFIG_IPDDP=m +CONFIG_IPDDP_ENCAP=y +CONFIG_IPDDP_DECAP=y +CONFIG_NET_SCHED=y +CONFIG_NET_SCH_CBQ=m +CONFIG_NET_SCH_HTB=m +CONFIG_NET_SCH_HFSC=m +CONFIG_NET_SCH_PRIO=m +CONFIG_NET_SCH_RED=m +CONFIG_NET_SCH_SFQ=m +CONFIG_NET_SCH_TEQL=m +CONFIG_NET_SCH_TBF=m +CONFIG_NET_SCH_GRED=m +CONFIG_NET_SCH_DSMARK=m +CONFIG_NET_SCH_NETEM=m +CONFIG_NET_SCH_INGRESS=m +CONFIG_NET_CLS_BASIC=m +CONFIG_NET_CLS_TCINDEX=m +CONFIG_NET_CLS_ROUTE4=m +CONFIG_NET_CLS_FW=m +CONFIG_NET_CLS_U32=m +CONFIG_NET_CLS_RSVP=m +CONFIG_NET_CLS_RSVP6=m +CONFIG_NET_CLS_ACT=y +CONFIG_NET_ACT_POLICE=y +CONFIG_NET_CLS_IND=y +# CONFIG_WIRELESS is not set +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_CRYPTOLOOP=m +CONFIG_IDE=y +# CONFIG_IDE_PROC_FS is not set +# CONFIG_IDEPCI_PCIBUS_ORDER is not set +CONFIG_BLK_DEV_GENERIC=y +CONFIG_BLK_DEV_PIIX=y +CONFIG_SCSI=y +CONFIG_BLK_DEV_SD=y +CONFIG_CHR_DEV_SG=y +# CONFIG_SCSI_LOWLEVEL is not set +CONFIG_NETDEVICES=y +# CONFIG_NET_VENDOR_3COM is not set +# CONFIG_NET_VENDOR_ADAPTEC is not set +# CONFIG_NET_VENDOR_ALTEON is not set +CONFIG_PCNET32=y +# CONFIG_NET_VENDOR_ATHEROS is not set +# CONFIG_NET_VENDOR_BROADCOM is not set +# CONFIG_NET_VENDOR_BROCADE is not set +# CONFIG_NET_VENDOR_CHELSIO is not set +# CONFIG_NET_VENDOR_CISCO is not set +# CONFIG_NET_VENDOR_DEC is not set +# CONFIG_NET_VENDOR_DLINK is not set +# CONFIG_NET_VENDOR_EMULEX is not set +# CONFIG_NET_VENDOR_EXAR is not set +# CONFIG_NET_VENDOR_HP is not set +# CONFIG_NET_VENDOR_INTEL is not set +# CONFIG_NET_VENDOR_MARVELL is not set +# CONFIG_NET_VENDOR_MELLANOX is not set +# CONFIG_NET_VENDOR_MICREL is not set +# CONFIG_NET_VENDOR_MYRI is not set +# CONFIG_NET_VENDOR_NATSEMI is not set +# CONFIG_NET_VENDOR_NVIDIA is not set +# CONFIG_NET_VENDOR_OKI is not set +# CONFIG_NET_PACKET_ENGINE is not set +# CONFIG_NET_VENDOR_QLOGIC is not set +# CONFIG_NET_VENDOR_REALTEK is not set +# CONFIG_NET_VENDOR_RDC is not set +# CONFIG_NET_VENDOR_SEEQ is not set +# CONFIG_NET_VENDOR_SILAN is not set +# CONFIG_NET_VENDOR_SIS is not set +# CONFIG_NET_VENDOR_SMSC is not set +# CONFIG_NET_VENDOR_STMICRO is not set +# CONFIG_NET_VENDOR_SUN is not set +# CONFIG_NET_VENDOR_TEHUTI is not set +# CONFIG_NET_VENDOR_TI is not set +# CONFIG_NET_VENDOR_TOSHIBA is not set +# CONFIG_NET_VENDOR_VIA is not set +# CONFIG_WLAN is not set +# CONFIG_VT is not set +CONFIG_LEGACY_PTY_COUNT=16 +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_HW_RANDOM=y +# CONFIG_HWMON is not set +CONFIG_VIDEO_OUTPUT_CONTROL=m +CONFIG_FB=y +CONFIG_FIRMWARE_EDID=y +CONFIG_FB_MATROX=y +CONFIG_FB_MATROX_G=y +CONFIG_USB=y +CONFIG_USB_EHCI_HCD=y +# CONFIG_USB_EHCI_TT_NEWSCHED is not set +CONFIG_USB_UHCI_HCD=y +CONFIG_USB_STORAGE=y +CONFIG_NEW_LEDS=y +CONFIG_LEDS_CLASS=y +CONFIG_LEDS_TRIGGERS=y +CONFIG_LEDS_TRIGGER_TIMER=y +CONFIG_LEDS_TRIGGER_IDE_DISK=y +CONFIG_LEDS_TRIGGER_HEARTBEAT=y +CONFIG_LEDS_TRIGGER_BACKLIGHT=y +CONFIG_LEDS_TRIGGER_DEFAULT_ON=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_DRV_CMOS=y +CONFIG_EXT2_FS=y +CONFIG_EXT3_FS=y +# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set +CONFIG_XFS_FS=y +CONFIG_XFS_QUOTA=y +CONFIG_XFS_POSIX_ACL=y +CONFIG_QUOTA=y +CONFIG_QFMT_V2=y +CONFIG_MSDOS_FS=m +CONFIG_VFAT_FS=m +CONFIG_PROC_KCORE=y +CONFIG_TMPFS=y +CONFIG_NFS_FS=y +CONFIG_ROOT_NFS=y +CONFIG_CIFS=m +CONFIG_CIFS_WEAK_PW_HASH=y +CONFIG_CIFS_XATTR=y +CONFIG_CIFS_POSIX=y +CONFIG_NLS_CODEPAGE_437=m +CONFIG_NLS_ISO8859_1=m +# CONFIG_FTRACE is not set +CONFIG_CRYPTO_NULL=m +CONFIG_CRYPTO_PCBC=m +CONFIG_CRYPTO_HMAC=y +CONFIG_CRYPTO_MICHAEL_MIC=m +CONFIG_CRYPTO_SHA512=m +CONFIG_CRYPTO_TGR192=m +CONFIG_CRYPTO_WP512=m +CONFIG_CRYPTO_ANUBIS=m +CONFIG_CRYPTO_BLOWFISH=m +CONFIG_CRYPTO_CAST5=m +CONFIG_CRYPTO_CAST6=m +CONFIG_CRYPTO_KHAZAD=m +CONFIG_CRYPTO_SERPENT=m +CONFIG_CRYPTO_TEA=m +CONFIG_CRYPTO_TWOFISH=m +# CONFIG_CRYPTO_ANSI_CPRNG is not set +# CONFIG_CRYPTO_HW is not set diff --git a/arch/mips/configs/maltasmvp_defconfig b/arch/mips/configs/maltasmvp_defconfig new file mode 100644 index 0000000..8a66602 --- /dev/null +++ b/arch/mips/configs/maltasmvp_defconfig @@ -0,0 +1,199 @@ +CONFIG_MIPS_MALTA=y +CONFIG_CPU_LITTLE_ENDIAN=y +CONFIG_CPU_MIPS32_R2=y +CONFIG_MIPS_MT_SMP=y +CONFIG_SCHED_SMT=y +CONFIG_MIPS_CMP=y +CONFIG_NR_CPUS=8 +CONFIG_HZ_100=y +CONFIG_LOCALVERSION="cmp" +CONFIG_SYSVIPC=y +CONFIG_POSIX_MQUEUE=y +CONFIG_AUDIT=y +CONFIG_NO_HZ=y +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y +CONFIG_LOG_BUF_SHIFT=15 +CONFIG_SYSCTL_SYSCALL=y +CONFIG_EMBEDDED=y +CONFIG_SLAB=y +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +CONFIG_MODVERSIONS=y +CONFIG_MODULE_SRCVERSION_ALL=y +# CONFIG_BLK_DEV_BSG is not set +CONFIG_PCI=y +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_XFRM_USER=m +CONFIG_NET_KEY=y +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +CONFIG_IP_ADVANCED_ROUTER=y +CONFIG_IP_MULTIPLE_TABLES=y +CONFIG_IP_ROUTE_MULTIPATH=y +CONFIG_IP_ROUTE_VERBOSE=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +CONFIG_NET_IPIP=m +CONFIG_IP_MROUTE=y +CONFIG_IP_PIMSM_V1=y +CONFIG_IP_PIMSM_V2=y +CONFIG_SYN_COOKIES=y +CONFIG_INET_AH=m +CONFIG_INET_ESP=m +CONFIG_INET_IPCOMP=m +# CONFIG_INET_LRO is not set +CONFIG_IPV6_PRIVACY=y +CONFIG_INET6_AH=m +CONFIG_INET6_ESP=m +CONFIG_INET6_IPCOMP=m +CONFIG_IPV6_TUNNEL=m +CONFIG_BRIDGE=m +CONFIG_VLAN_8021Q=m +CONFIG_ATALK=m +CONFIG_DEV_APPLETALK=m +CONFIG_IPDDP=m +CONFIG_IPDDP_ENCAP=y +CONFIG_IPDDP_DECAP=y +CONFIG_NET_SCHED=y +CONFIG_NET_SCH_CBQ=m +CONFIG_NET_SCH_HTB=m +CONFIG_NET_SCH_HFSC=m +CONFIG_NET_SCH_PRIO=m +CONFIG_NET_SCH_RED=m +CONFIG_NET_SCH_SFQ=m +CONFIG_NET_SCH_TEQL=m +CONFIG_NET_SCH_TBF=m +CONFIG_NET_SCH_GRED=m +CONFIG_NET_SCH_DSMARK=m +CONFIG_NET_SCH_NETEM=m +CONFIG_NET_SCH_INGRESS=m +CONFIG_NET_CLS_BASIC=m +CONFIG_NET_CLS_TCINDEX=m +CONFIG_NET_CLS_ROUTE4=m +CONFIG_NET_CLS_FW=m +CONFIG_NET_CLS_U32=m +CONFIG_NET_CLS_RSVP=m +CONFIG_NET_CLS_RSVP6=m +CONFIG_NET_CLS_ACT=y +CONFIG_NET_ACT_POLICE=y +CONFIG_NET_CLS_IND=y +# CONFIG_WIRELESS is not set +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_CRYPTOLOOP=m +CONFIG_IDE=y +# CONFIG_IDE_PROC_FS is not set +# CONFIG_IDEPCI_PCIBUS_ORDER is not set +CONFIG_BLK_DEV_GENERIC=y +CONFIG_BLK_DEV_PIIX=y +CONFIG_SCSI=y +CONFIG_BLK_DEV_SD=y +CONFIG_CHR_DEV_SG=y +# CONFIG_SCSI_LOWLEVEL is not set +CONFIG_NETDEVICES=y +# CONFIG_NET_VENDOR_3COM is not set +# CONFIG_NET_VENDOR_ADAPTEC is not set +# CONFIG_NET_VENDOR_ALTEON is not set +CONFIG_PCNET32=y +# CONFIG_NET_VENDOR_ATHEROS is not set +# CONFIG_NET_VENDOR_BROADCOM is not set +# CONFIG_NET_VENDOR_BROCADE is not set +# CONFIG_NET_VENDOR_CHELSIO is not set +# CONFIG_NET_VENDOR_CISCO is not set +# CONFIG_NET_VENDOR_DEC is not set +# CONFIG_NET_VENDOR_DLINK is not set +# CONFIG_NET_VENDOR_EMULEX is not set +# CONFIG_NET_VENDOR_EXAR is not set +# CONFIG_NET_VENDOR_HP is not set +# CONFIG_NET_VENDOR_INTEL is not set +# CONFIG_NET_VENDOR_MARVELL is not set +# CONFIG_NET_VENDOR_MELLANOX is not set +# CONFIG_NET_VENDOR_MICREL is not set +# CONFIG_NET_VENDOR_MYRI is not set +# CONFIG_NET_VENDOR_NATSEMI is not set +# CONFIG_NET_VENDOR_NVIDIA is not set +# CONFIG_NET_VENDOR_OKI is not set +# CONFIG_NET_PACKET_ENGINE is not set +# CONFIG_NET_VENDOR_QLOGIC is not set +# CONFIG_NET_VENDOR_REALTEK is not set +# CONFIG_NET_VENDOR_RDC is not set +# CONFIG_NET_VENDOR_SEEQ is not set +# CONFIG_NET_VENDOR_SILAN is not set +# CONFIG_NET_VENDOR_SIS is not set +# CONFIG_NET_VENDOR_SMSC is not set +# CONFIG_NET_VENDOR_STMICRO is not set +# CONFIG_NET_VENDOR_SUN is not set +# CONFIG_NET_VENDOR_TEHUTI is not set +# CONFIG_NET_VENDOR_TI is not set +# CONFIG_NET_VENDOR_TOSHIBA is not set +# CONFIG_NET_VENDOR_VIA is not set +# CONFIG_NET_VENDOR_WIZNET is not set +# CONFIG_WLAN is not set +# CONFIG_VT is not set +CONFIG_LEGACY_PTY_COUNT=4 +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_HW_RANDOM=y +# CONFIG_HWMON is not set +CONFIG_VIDEO_OUTPUT_CONTROL=m +CONFIG_FB=y +CONFIG_FIRMWARE_EDID=y +CONFIG_FB_MATROX=y +CONFIG_FB_MATROX_G=y +CONFIG_USB=y +CONFIG_USB_EHCI_HCD=y +# CONFIG_USB_EHCI_TT_NEWSCHED is not set +CONFIG_USB_UHCI_HCD=y +CONFIG_USB_STORAGE=y +CONFIG_NEW_LEDS=y +CONFIG_LEDS_CLASS=y +CONFIG_LEDS_TRIGGERS=y +CONFIG_LEDS_TRIGGER_TIMER=y +CONFIG_LEDS_TRIGGER_IDE_DISK=y +CONFIG_LEDS_TRIGGER_HEARTBEAT=y +CONFIG_LEDS_TRIGGER_BACKLIGHT=y +CONFIG_LEDS_TRIGGER_DEFAULT_ON=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_DRV_CMOS=y +CONFIG_EXT2_FS=y +CONFIG_EXT3_FS=y +# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set +CONFIG_XFS_FS=y +CONFIG_XFS_QUOTA=y +CONFIG_XFS_POSIX_ACL=y +CONFIG_QUOTA=y +CONFIG_QFMT_V2=y +CONFIG_MSDOS_FS=m +CONFIG_VFAT_FS=m +CONFIG_PROC_KCORE=y +CONFIG_TMPFS=y +CONFIG_NFS_FS=y +CONFIG_ROOT_NFS=y +CONFIG_CIFS=m +CONFIG_CIFS_WEAK_PW_HASH=y +CONFIG_CIFS_XATTR=y +CONFIG_CIFS_POSIX=y +CONFIG_NLS_CODEPAGE_437=m +CONFIG_NLS_ISO8859_1=m +# CONFIG_FTRACE is not set +CONFIG_CRYPTO_NULL=m +CONFIG_CRYPTO_PCBC=m +CONFIG_CRYPTO_HMAC=y +CONFIG_CRYPTO_MICHAEL_MIC=m +CONFIG_CRYPTO_SHA512=m +CONFIG_CRYPTO_TGR192=m +CONFIG_CRYPTO_WP512=m +CONFIG_CRYPTO_ANUBIS=m +CONFIG_CRYPTO_BLOWFISH=m +CONFIG_CRYPTO_CAST5=m +CONFIG_CRYPTO_CAST6=m +CONFIG_CRYPTO_KHAZAD=m +CONFIG_CRYPTO_SERPENT=m +CONFIG_CRYPTO_TEA=m +CONFIG_CRYPTO_TWOFISH=m +# CONFIG_CRYPTO_ANSI_CPRNG is not set +# CONFIG_CRYPTO_HW is not set diff --git a/arch/mips/configs/maltaup_defconfig b/arch/mips/configs/maltaup_defconfig new file mode 100644 index 0000000..9868fc9 --- /dev/null +++ b/arch/mips/configs/maltaup_defconfig @@ -0,0 +1,194 @@ +CONFIG_MIPS_MALTA=y +CONFIG_CPU_LITTLE_ENDIAN=y +CONFIG_CPU_MIPS32_R2=y +CONFIG_HZ_100=y +CONFIG_LOCALVERSION="up" +CONFIG_SYSVIPC=y +CONFIG_POSIX_MQUEUE=y +CONFIG_AUDIT=y +CONFIG_NO_HZ=y +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y +CONFIG_LOG_BUF_SHIFT=15 +CONFIG_SYSCTL_SYSCALL=y +CONFIG_EMBEDDED=y +CONFIG_SLAB=y +CONFIG_MODULES=y +CONFIG_MODULE_UNLOAD=y +CONFIG_MODVERSIONS=y +CONFIG_MODULE_SRCVERSION_ALL=y +# CONFIG_BLK_DEV_BSG is not set +CONFIG_PCI=y +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_XFRM_USER=m +CONFIG_NET_KEY=y +CONFIG_INET=y +CONFIG_IP_MULTICAST=y +CONFIG_IP_ADVANCED_ROUTER=y +CONFIG_IP_MULTIPLE_TABLES=y +CONFIG_IP_ROUTE_MULTIPATH=y +CONFIG_IP_ROUTE_VERBOSE=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +CONFIG_NET_IPIP=m +CONFIG_IP_MROUTE=y +CONFIG_IP_PIMSM_V1=y +CONFIG_IP_PIMSM_V2=y +CONFIG_SYN_COOKIES=y +CONFIG_INET_AH=m +CONFIG_INET_ESP=m +CONFIG_INET_IPCOMP=m +# CONFIG_INET_LRO is not set +CONFIG_IPV6_PRIVACY=y +CONFIG_INET6_AH=m +CONFIG_INET6_ESP=m +CONFIG_INET6_IPCOMP=m +CONFIG_IPV6_TUNNEL=m +CONFIG_BRIDGE=m +CONFIG_VLAN_8021Q=m +CONFIG_ATALK=m +CONFIG_DEV_APPLETALK=m +CONFIG_IPDDP=m +CONFIG_IPDDP_ENCAP=y +CONFIG_IPDDP_DECAP=y +CONFIG_NET_SCHED=y +CONFIG_NET_SCH_CBQ=m +CONFIG_NET_SCH_HTB=m +CONFIG_NET_SCH_HFSC=m +CONFIG_NET_SCH_PRIO=m +CONFIG_NET_SCH_RED=m +CONFIG_NET_SCH_SFQ=m +CONFIG_NET_SCH_TEQL=m +CONFIG_NET_SCH_TBF=m +CONFIG_NET_SCH_GRED=m +CONFIG_NET_SCH_DSMARK=m +CONFIG_NET_SCH_NETEM=m +CONFIG_NET_SCH_INGRESS=m +CONFIG_NET_CLS_BASIC=m +CONFIG_NET_CLS_TCINDEX=m +CONFIG_NET_CLS_ROUTE4=m +CONFIG_NET_CLS_FW=m +CONFIG_NET_CLS_U32=m +CONFIG_NET_CLS_RSVP=m +CONFIG_NET_CLS_RSVP6=m +CONFIG_NET_CLS_ACT=y +CONFIG_NET_ACT_POLICE=y +CONFIG_NET_CLS_IND=y +# CONFIG_WIRELESS is not set +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_CRYPTOLOOP=m +CONFIG_IDE=y +# CONFIG_IDE_PROC_FS is not set +# CONFIG_IDEPCI_PCIBUS_ORDER is not set +CONFIG_BLK_DEV_GENERIC=y +CONFIG_BLK_DEV_PIIX=y +CONFIG_SCSI=y +CONFIG_BLK_DEV_SD=y +CONFIG_CHR_DEV_SG=y +# CONFIG_SCSI_LOWLEVEL is not set +CONFIG_NETDEVICES=y +# CONFIG_NET_VENDOR_3COM is not set +# CONFIG_NET_VENDOR_ADAPTEC is not set +# CONFIG_NET_VENDOR_ALTEON is not set +CONFIG_PCNET32=y +# CONFIG_NET_VENDOR_ATHEROS is not set +# CONFIG_NET_VENDOR_BROADCOM is not set +# CONFIG_NET_VENDOR_BROCADE is not set +# CONFIG_NET_VENDOR_CHELSIO is not set +# CONFIG_NET_VENDOR_CISCO is not set +# CONFIG_NET_VENDOR_DEC is not set +# CONFIG_NET_VENDOR_DLINK is not set +# CONFIG_NET_VENDOR_EMULEX is not set +# CONFIG_NET_VENDOR_EXAR is not set +# CONFIG_NET_VENDOR_HP is not set +# CONFIG_NET_VENDOR_INTEL is not set +# CONFIG_NET_VENDOR_MARVELL is not set +# CONFIG_NET_VENDOR_MELLANOX is not set +# CONFIG_NET_VENDOR_MICREL is not set +# CONFIG_NET_VENDOR_MYRI is not set +# CONFIG_NET_VENDOR_NATSEMI is not set +# CONFIG_NET_VENDOR_NVIDIA is not set +# CONFIG_NET_VENDOR_OKI is not set +# CONFIG_NET_PACKET_ENGINE is not set +# CONFIG_NET_VENDOR_QLOGIC is not set +# CONFIG_NET_VENDOR_REALTEK is not set +# CONFIG_NET_VENDOR_RDC is not set +# CONFIG_NET_VENDOR_SEEQ is not set +# CONFIG_NET_VENDOR_SILAN is not set +# CONFIG_NET_VENDOR_SIS is not set +# CONFIG_NET_VENDOR_SMSC is not set +# CONFIG_NET_VENDOR_STMICRO is not set +# CONFIG_NET_VENDOR_SUN is not set +# CONFIG_NET_VENDOR_TEHUTI is not set +# CONFIG_NET_VENDOR_TI is not set +# CONFIG_NET_VENDOR_TOSHIBA is not set +# CONFIG_NET_VENDOR_VIA is not set +# CONFIG_WLAN is not set +# CONFIG_VT is not set +CONFIG_LEGACY_PTY_COUNT=16 +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_HW_RANDOM=y +# CONFIG_HWMON is not set +CONFIG_VIDEO_OUTPUT_CONTROL=m +CONFIG_FB=y +CONFIG_FIRMWARE_EDID=y +CONFIG_FB_MATROX=y +CONFIG_FB_MATROX_G=y +CONFIG_USB=y +CONFIG_USB_EHCI_HCD=y +# CONFIG_USB_EHCI_TT_NEWSCHED is not set +CONFIG_USB_UHCI_HCD=y +CONFIG_USB_STORAGE=y +CONFIG_NEW_LEDS=y +CONFIG_LEDS_CLASS=y +CONFIG_LEDS_TRIGGERS=y +CONFIG_LEDS_TRIGGER_TIMER=y +CONFIG_LEDS_TRIGGER_IDE_DISK=y +CONFIG_LEDS_TRIGGER_HEARTBEAT=y +CONFIG_LEDS_TRIGGER_BACKLIGHT=y +CONFIG_LEDS_TRIGGER_DEFAULT_ON=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_DRV_CMOS=y +CONFIG_EXT2_FS=y +CONFIG_EXT3_FS=y +# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set +CONFIG_XFS_FS=y +CONFIG_XFS_QUOTA=y +CONFIG_XFS_POSIX_ACL=y +CONFIG_QUOTA=y +CONFIG_QFMT_V2=y +CONFIG_MSDOS_FS=m +CONFIG_VFAT_FS=m +CONFIG_PROC_KCORE=y +CONFIG_TMPFS=y +CONFIG_NFS_FS=y +CONFIG_ROOT_NFS=y +CONFIG_CIFS=m +CONFIG_CIFS_WEAK_PW_HASH=y +CONFIG_CIFS_XATTR=y +CONFIG_CIFS_POSIX=y +CONFIG_NLS_CODEPAGE_437=m +CONFIG_NLS_ISO8859_1=m +# CONFIG_FTRACE is not set +CONFIG_CRYPTO_NULL=m +CONFIG_CRYPTO_PCBC=m +CONFIG_CRYPTO_HMAC=y +CONFIG_CRYPTO_MICHAEL_MIC=m +CONFIG_CRYPTO_SHA512=m +CONFIG_CRYPTO_TGR192=m +CONFIG_CRYPTO_WP512=m +CONFIG_CRYPTO_ANUBIS=m +CONFIG_CRYPTO_BLOWFISH=m +CONFIG_CRYPTO_CAST5=m +CONFIG_CRYPTO_CAST6=m +CONFIG_CRYPTO_KHAZAD=m +CONFIG_CRYPTO_SERPENT=m +CONFIG_CRYPTO_TEA=m +CONFIG_CRYPTO_TWOFISH=m +# CONFIG_CRYPTO_ANSI_CPRNG is not set +# CONFIG_CRYPTO_HW is not set -- cgit v0.10.2 From b6d92b4a6bdb880b39789c677b952c53a437028d Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 diff --git a/arch/mips/include/asm/dma-coherence.h b/arch/mips/include/asm/dma-coherence.h new file mode 100644 index 0000000..242cbb3 --- /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 + * + */ +#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 f8fc74b..84238c5 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 +#include #include #include diff --git a/arch/mips/include/asm/mach-generic/dma-coherence.h b/arch/mips/include/asm/mach-generic/dma-coherence.h index 9c95177..fe23034 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 } diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c index 2078915..f5943ab 100644 --- a/arch/mips/mm/c-r4k.c +++ b/arch/mips/mm/c-r4k.c @@ -33,6 +33,7 @@ #include #include /* for run_uncached() */ #include +#include /* * Special Variant of smp_call_function for use by cache functions: @@ -1377,20 +1378,6 @@ static void __cpuinit coherency_setup(void) } } -#if defined(CONFIG_DMA_NONCOHERENT) - -static int __cpuinitdata coherentio; - -static int __init setcoherentio(char *str) -{ - coherentio = 1; - - return 0; -} - -early_param("coherentio", setcoherentio); -#endif - static void __cpuinit r4k_cache_error_setup(void) { extern char __weak except_vec2_generic; @@ -1472,9 +1459,14 @@ void __cpuinit r4k_cache_init(void) build_clear_page(); build_copy_page(); -#if !defined(CONFIG_MIPS_CMP) + + /* + * We want to run CMP kernels on core with and without coherent + * caches. Therefore, do not use CONFIG_MIPS_CMP to decide whether + * or not to flush caches. + */ local_r4k___flush_cache_all(NULL); -#endif + coherency_setup(); board_cache_error_setup = r4k_cache_error_setup; } diff --git a/arch/mips/mm/dma-default.c b/arch/mips/mm/dma-default.c index f9ef838..caf92ec 100644 --- a/arch/mips/mm/dma-default.c +++ b/arch/mips/mm/dma-default.c @@ -22,6 +22,26 @@ #include +int coherentio = 0; /* User defined DMA coherency from command line. */ +EXPORT_SYMBOL_GPL(coherentio); +int hw_coherentio = 0; /* Actual hardware supported DMA coherency setting. */ + +static int __init setcoherentio(char *str) +{ + coherentio = 1; + pr_info("Hardware DMA cache coherency (command line)\n"); + return 0; +} +early_param("coherentio", setcoherentio); + +static int __init setnocoherentio(char *str) +{ + coherentio = 0; + pr_info("Software DMA cache coherency (command line)\n"); + return 0; +} +early_param("nocoherentio", setnocoherentio); + static inline struct page *dma_addr_to_page(struct device *dev, dma_addr_t dma_addr) { @@ -115,7 +135,8 @@ static void *mips_dma_alloc_coherent(struct device *dev, size_t size, if (!plat_device_is_coherent(dev)) { dma_cache_wback_inv((unsigned long) ret, size); - ret = UNCAC_ADDR(ret); + if (!hw_coherentio) + ret = UNCAC_ADDR(ret); } } @@ -142,7 +163,7 @@ static void mips_dma_free_coherent(struct device *dev, size_t size, void *vaddr, plat_unmap_dma_mem(dev, dma_handle, size, DMA_BIDIRECTIONAL); - if (!plat_device_is_coherent(dev)) + if (!plat_device_is_coherent(dev) && !hw_coherentio) addr = CAC_ADDR(addr); free_pages(addr, get_order(size)); diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c index 200f64d..a855571 100644 --- a/arch/mips/mti-malta/malta-setup.c +++ b/arch/mips/mti-malta/malta-setup.c @@ -32,6 +32,7 @@ #include #include #include +#include #ifdef CONFIG_VT #include #endif @@ -105,6 +106,66 @@ static void __init fd_activate(void) } #endif +static int __init plat_enable_iocoherency(void) +{ + int supported = 0; + if (mips_revision_sconid == MIPS_REVISION_SCON_BONITO) { + if (BONITO_PCICACHECTRL & BONITO_PCICACHECTRL_CPUCOH_PRES) { + BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_CPUCOH_EN; + pr_info("Enabled Bonito CPU coherency\n"); + supported = 1; + } + if (strstr(fw_getcmdline(), "iobcuncached")) { + BONITO_PCICACHECTRL &= ~BONITO_PCICACHECTRL_IOBCCOH_EN; + BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG & + ~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED | + BONITO_PCIMEMBASECFG_MEMBASE1_CACHED); + pr_info("Disabled Bonito IOBC coherency\n"); + } else { + BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_IOBCCOH_EN; + BONITO_PCIMEMBASECFG |= + (BONITO_PCIMEMBASECFG_MEMBASE0_CACHED | + BONITO_PCIMEMBASECFG_MEMBASE1_CACHED); + pr_info("Enabled Bonito IOBC coherency\n"); + } + } else if (gcmp_niocu() != 0) { + /* Nothing special needs to be done to enable coherency */ + pr_info("CMP IOCU detected\n"); + if ((*(unsigned int *)0xbf403000 & 0x81) != 0x81) { + pr_crit("IOCU OPERATION DISABLED BY SWITCH - DEFAULTING TO SW IO COHERENCY\n"); + return 0; + } + supported = 1; + } + hw_coherentio = supported; + return supported; +} + +static void __init plat_setup_iocoherency(void) +{ +#ifdef CONFIG_DMA_NONCOHERENT + /* + * Kernel has been configured with software coherency + * but we might choose to turn it off and use hardware + * coherency instead. + */ + if (plat_enable_iocoherency()) { + if (coherentio == 0) + pr_info("Hardware DMA cache coherency disabled\n"); + else + pr_info("Hardware DMA cache coherency enabled\n"); + } else { + if (coherentio == 1) + pr_info("Hardware DMA cache coherency unsupported, but enabled from command line!\n"); + else + pr_info("Software DMA cache coherency enabled\n"); + } +#else + if (!plat_enable_iocoherency()) + panic("Hardware DMA cache coherency not supported!"); +#endif +} + #ifdef CONFIG_BLK_DEV_IDE static void __init pci_clock_check(void) { @@ -207,6 +268,8 @@ void __init plat_mem_setup(void) if (mips_revision_sconid == MIPS_REVISION_SCON_BONITO) bonito_quirks_setup(); + plat_setup_iocoherency(); + #ifdef CONFIG_BLK_DEV_IDE pci_clock_check(); #endif diff --git a/arch/mips/mti-sead3/sead3-setup.c b/arch/mips/mti-sead3/sead3-setup.c index f012fd1..14633bc 100644 --- a/arch/mips/mti-sead3/sead3-setup.c +++ b/arch/mips/mti-sead3/sead3-setup.c @@ -13,9 +13,6 @@ #include #include -int coherentio; /* 0 => no DMA cache coherency (may be set by user) */ -int hw_coherentio; /* 0 => no HW DMA cache coherency (reflects real HW) */ - const char *get_system_type(void) { return "MIPS SEAD3"; -- cgit v0.10.2 From f4d1f2bed6fb7df12f8a99ccf16d537472a3d246 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Mon, 25 Mar 2013 11:54:17 -0500 Subject: MIPS: sead3: Use generic suspend/resume for LEDs. Setting the LED_CORE_SUSPENDRESUME flag causes the LED driver core to call led_classdev_suspend/led_classdev_resume during suspend/resume. Since this is exactly what the driver's custom suspend/resume callbacks do we can replace them by setting the LED_CORE_SUSPENDRESUME flag. Signed-off-by: Lars-Peter Clausen Signed-off-by: Steven J. Hill diff --git a/arch/mips/mti-sead3/leds-sead3.c b/arch/mips/mti-sead3/leds-sead3.c index 322148c..0a168c9 100644 --- a/arch/mips/mti-sead3/leds-sead3.c +++ b/arch/mips/mti-sead3/leds-sead3.c @@ -34,33 +34,15 @@ static void sead3_fled_set(struct led_classdev *led_cdev, static struct led_classdev sead3_pled = { .name = "sead3::pled", .brightness_set = sead3_pled_set, + .flags = LED_CORE_SUSPENDRESUME, }; static struct led_classdev sead3_fled = { .name = "sead3::fled", .brightness_set = sead3_fled_set, + .flags = LED_CORE_SUSPENDRESUME, }; -#ifdef CONFIG_PM -static int sead3_led_suspend(struct platform_device *dev, - pm_message_t state) -{ - led_classdev_suspend(&sead3_pled); - led_classdev_suspend(&sead3_fled); - return 0; -} - -static int sead3_led_resume(struct platform_device *dev) -{ - led_classdev_resume(&sead3_pled); - led_classdev_resume(&sead3_fled); - return 0; -} -#else -#define sead3_led_suspend NULL -#define sead3_led_resume NULL -#endif - static int sead3_led_probe(struct platform_device *pdev) { int ret; @@ -86,8 +68,6 @@ static int sead3_led_remove(struct platform_device *pdev) static struct platform_driver sead3_led_driver = { .probe = sead3_led_probe, .remove = sead3_led_remove, - .suspend = sead3_led_suspend, - .resume = sead3_led_resume, .driver = { .name = DRVNAME, .owner = THIS_MODULE, -- cgit v0.10.2 From 98ffcf602bd55656a4f6c5d9c743bffef115a8c1 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 diff --git a/arch/mips/include/asm/mips-boards/generic.h b/arch/mips/include/asm/mips-boards/generic.h index 44a09a6..bd9746f 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 v0.10.2 From 14aecdd419217e041fb5dd2749d11f58503bdf62 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 diff --git a/arch/mips/fw/lib/Makefile b/arch/mips/fw/lib/Makefile index 84befc9..5291505 100644 --- a/arch/mips/fw/lib/Makefile +++ b/arch/mips/fw/lib/Makefile @@ -2,4 +2,6 @@ # Makefile for generic prom monitor library routines under Linux. # +lib-y += cmdline.o + lib-$(CONFIG_64BIT) += call_o32.o diff --git a/arch/mips/fw/lib/cmdline.c b/arch/mips/fw/lib/cmdline.c new file mode 100644 index 0000000..ffd0345 --- /dev/null +++ b/arch/mips/fw/lib/cmdline.c @@ -0,0 +1,101 @@ +/* + * 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. All rights reserved. + */ +#include +#include +#include + +#include +#include + +int fw_argc; +int *_fw_argv; +int *_fw_envp; + +void __init fw_init_cmdline(void) +{ + int i; + + /* Validate command line parameters. */ + if ((fw_arg0 >= CKSEG0) || (fw_arg1 < CKSEG0)) { + fw_argc = 0; + _fw_argv = NULL; + } else { + fw_argc = (fw_arg0 & 0x0000ffff); + _fw_argv = (int *)fw_arg1; + } + + /* Validate environment pointer. */ + if (fw_arg2 < CKSEG0) + _fw_envp = NULL; + else + _fw_envp = (int *)fw_arg2; + + for (i = 1; i < fw_argc; i++) { + strlcat(arcs_cmdline, fw_argv(i), COMMAND_LINE_SIZE); + if (i < (fw_argc - 1)) + strlcat(arcs_cmdline, " ", COMMAND_LINE_SIZE); + } +} + +char * __init fw_getcmdline(void) +{ + return &(arcs_cmdline[0]); +} + +char *fw_getenv(char *envname) +{ + char *result = NULL; + + if (_fw_envp != NULL) { + /* + * Return a pointer to the given environment variable. + * YAMON uses "name", "value" pairs, while U-Boot uses + * "name=value". + */ + int i, yamon, index = 0; + + yamon = (strchr(fw_envp(index), '=') == NULL); + i = strlen(envname); + + while (fw_envp(index)) { + if (strncmp(envname, fw_envp(index), i) == 0) { + if (yamon) { + result = fw_envp(index + 1); + break; + } else if (fw_envp(index)[i] == '=') { + result = (fw_envp(index + 1) + i); + break; + } + } + + /* Increment array index. */ + if (yamon) + index += 2; + else + index += 1; + } + } + + return result; +} + +unsigned long fw_getenvl(char *envname) +{ + unsigned long envl = 0UL; + char *str; + long val; + int tmp; + + str = fw_getenv(envname); + if (str) { + tmp = kstrtol(str, 0, &val); + envl = (unsigned long)val; + } + + return envl; +} diff --git a/arch/mips/include/asm/fw/fw.h b/arch/mips/include/asm/fw/fw.h new file mode 100644 index 0000000..d6c50a7 --- /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 /* 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 v0.10.2 From 0be2abbceeb837bf938c85db03142b5b0e4675f4 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Mon, 25 Mar 2013 14:35:30 -0500 Subject: MIPS: FW: sead3: Use new common FW library variable processing. Remove old YAMON prom code and use common firmware library code. Signed-off-by: Steven J. Hill diff --git a/arch/mips/mti-sead3/Makefile b/arch/mips/mti-sead3/Makefile index 10ec701..be11420 100644 --- a/arch/mips/mti-sead3/Makefile +++ b/arch/mips/mti-sead3/Makefile @@ -8,10 +8,10 @@ # Copyright (C) 2012 MIPS Technoligies, Inc. All rights reserved. # Steven J. Hill # -obj-y := sead3-lcd.o sead3-cmdline.o \ - sead3-display.o sead3-init.o sead3-int.o \ - sead3-mtd.o sead3-net.o sead3-platform.o \ - sead3-reset.o sead3-setup.o sead3-time.o +obj-y := sead3-lcd.o sead3-display.o sead3-init.o \ + sead3-int.o sead3-mtd.o sead3-net.o \ + sead3-platform.o sead3-reset.o \ + sead3-setup.o sead3-time.o obj-y += sead3-i2c-dev.o sead3-i2c.o \ sead3-pic32-i2c-drv.o sead3-pic32-bus.o \ diff --git a/arch/mips/mti-sead3/sead3-cmdline.c b/arch/mips/mti-sead3/sead3-cmdline.c deleted file mode 100644 index a2e6cec..0000000 --- a/arch/mips/mti-sead3/sead3-cmdline.c +++ /dev/null @@ -1,46 +0,0 @@ -/* - * 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. All rights reserved. - */ -#include -#include - -#include - -extern int prom_argc; -extern int *_prom_argv; - -/* - * YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer. - * This macro take care of sign extension. - */ -#define prom_argv(index) ((char *)(long)_prom_argv[(index)]) - -char * __init prom_getcmdline(void) -{ - return &(arcs_cmdline[0]); -} - -void __init prom_init_cmdline(void) -{ - char *cp; - int actr; - - actr = 1; /* Always ignore argv[0] */ - - cp = &(arcs_cmdline[0]); - while (actr < prom_argc) { - strcpy(cp, prom_argv(actr)); - cp += strlen(prom_argv(actr)); - *cp++ = ' '; - actr++; - } - if (cp != &(arcs_cmdline[0])) { - /* get rid of trailing space */ - --cp; - *cp = '\0'; - } -} diff --git a/arch/mips/mti-sead3/sead3-console.c b/arch/mips/mti-sead3/sead3-console.c index 2ddef19..031f47d 100644 --- a/arch/mips/mti-sead3/sead3-console.c +++ b/arch/mips/mti-sead3/sead3-console.c @@ -26,7 +26,7 @@ static inline void serial_out(int offset, int value, unsigned int base_addr) __raw_writel(value, PORT(base_addr, offset)); } -void __init prom_init_early_console(char port) +void __init fw_init_early_console(char port) { console_port = port; } diff --git a/arch/mips/mti-sead3/sead3-init.c b/arch/mips/mti-sead3/sead3-init.c index f95abaa..357c0e1 100644 --- a/arch/mips/mti-sead3/sead3-init.c +++ b/arch/mips/mti-sead3/sead3-init.c @@ -13,37 +13,51 @@ #include #include #include - -extern void prom_init_early_console(char port); +#include extern char except_vec_nmi; extern char except_vec_ejtag_debug; -int prom_argc; -int *_prom_argv, *_prom_envp; - -#define prom_envp(index) ((char *)(long)_prom_envp[(index)]) - -char *prom_getenv(char *envname) +#ifdef CONFIG_SERIAL_8250_CONSOLE +static void __init console_config(void) { - /* - * Return a pointer to the given environment variable. - * In 64-bit mode: we're using 64-bit pointers, but all pointers - * in the PROM structures are only 32-bit, so we need some - * workarounds, if we are running in 64-bit mode. - */ - int i, index = 0; - - i = strlen(envname); - - while (prom_envp(index)) { - if (strncmp(envname, prom_envp(index), i) == 0) - return prom_envp(index+1); - index += 2; + char console_string[40]; + int baud = 0; + char parity = '\0', bits = '\0', flow = '\0'; + char *s; + + if ((strstr(fw_getcmdline(), "console=")) == NULL) { + s = fw_getenv("modetty0"); + if (s) { + while (*s >= '0' && *s <= '9') + baud = baud*10 + *s++ - '0'; + if (*s == ',') + s++; + if (*s) + parity = *s++; + if (*s == ',') + s++; + if (*s) + bits = *s++; + if (*s == ',') + s++; + if (*s == 'h') + flow = 'r'; + } + if (baud == 0) + baud = 38400; + if (parity != 'n' && parity != 'o' && parity != 'e') + parity = 'n'; + if (bits != '7' && bits != '8') + bits = '8'; + if (flow == '\0') + flow = 'r'; + sprintf(console_string, " console=ttyS0,%d%c%c%c", baud, + parity, bits, flow); + strcat(fw_getcmdline(), console_string); } - - return NULL; } +#endif static void __init mips_nmi_setup(void) { @@ -69,23 +83,20 @@ static void __init mips_ejtag_setup(void) void __init prom_init(void) { - prom_argc = fw_arg0; - _prom_argv = (int *) fw_arg1; - _prom_envp = (int *) fw_arg2; - board_nmi_handler_setup = mips_nmi_setup; board_ejtag_handler_setup = mips_ejtag_setup; - prom_init_cmdline(); + fw_init_cmdline(); #ifdef CONFIG_EARLY_PRINTK - if ((strstr(prom_getcmdline(), "console=ttyS0")) != NULL) - prom_init_early_console(0); - else if ((strstr(prom_getcmdline(), "console=ttyS1")) != NULL) - prom_init_early_console(1); + if ((strstr(fw_getcmdline(), "console=ttyS0")) != NULL) + fw_init_early_console(0); + else if ((strstr(fw_getcmdline(), "console=ttyS1")) != NULL) + fw_init_early_console(1); #endif #ifdef CONFIG_SERIAL_8250_CONSOLE - if ((strstr(prom_getcmdline(), "console=")) == NULL) - strcat(prom_getcmdline(), " console=ttyS0,38400n8r"); + if ((strstr(fw_getcmdline(), "console=")) == NULL) + strcat(fw_getcmdline(), " console=ttyS0,38400n8r"); + console_config(); #endif } -- cgit v0.10.2 From b431f09d552cc85b19ee1d029eb1d3a992b73166 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Mon, 25 Mar 2013 14:47:05 -0500 Subject: MIPS: FW: malta: Use new common FW library variable processing. Remove old YAMON prom code and use common firmware library code. Signed-off-by: Steven J. Hill diff --git a/arch/mips/mti-malta/Makefile b/arch/mips/mti-malta/Makefile index 6079ef3..0388fc8 100644 --- a/arch/mips/mti-malta/Makefile +++ b/arch/mips/mti-malta/Makefile @@ -5,9 +5,8 @@ # Copyright (C) 2008 Wind River Systems, Inc. # written by Ralf Baechle # -obj-y := malta-amon.o malta-cmdline.o \ - malta-display.o malta-init.o malta-int.o \ - malta-memory.o malta-platform.o \ +obj-y := malta-amon.o malta-display.o malta-init.o \ + malta-int.o malta-memory.o malta-platform.o \ malta-reset.o malta-setup.o malta-time.o obj-$(CONFIG_EARLY_PRINTK) += malta-console.o diff --git a/arch/mips/mti-malta/malta-cmdline.c b/arch/mips/mti-malta/malta-cmdline.c deleted file mode 100644 index 5576a30..0000000 --- a/arch/mips/mti-malta/malta-cmdline.c +++ /dev/null @@ -1,59 +0,0 @@ -/* - * Carsten Langgaard, carstenl@mips.com - * Copyright (C) 1999,2000 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. - * - * Kernel command line creation using the prom monitor (YAMON) argc/argv. - */ -#include -#include - -#include - -extern int prom_argc; -extern int *_prom_argv; - -/* - * YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer. - * This macro take care of sign extension. - */ -#define prom_argv(index) ((char *)(long)_prom_argv[(index)]) - -char * __init prom_getcmdline(void) -{ - return &(arcs_cmdline[0]); -} - - -void __init prom_init_cmdline(void) -{ - char *cp; - int actr; - - actr = 1; /* Always ignore argv[0] */ - - cp = &(arcs_cmdline[0]); - while(actr < prom_argc) { - strcpy(cp, prom_argv(actr)); - cp += strlen(prom_argv(actr)); - *cp++ = ' '; - actr++; - } - if (cp != &(arcs_cmdline[0])) { - /* get rid of trailing space */ - --cp; - *cp = '\0'; - } -} diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c index c2cbce9..9caadce 100644 --- a/arch/mips/mti-malta/malta-init.c +++ b/arch/mips/mti-malta/malta-init.c @@ -23,13 +23,12 @@ #include #include -#include #include #include #include #include #include - +#include #include #include #include @@ -38,15 +37,6 @@ #include -int prom_argc; -int *_prom_argv, *_prom_envp; - -/* - * YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer. - * This macro take care of sign extension, if running in 64-bit mode. - */ -#define prom_envp(index) ((char *)(long)_prom_envp[(index)]) - int init_debug; static int mips_revision_corid; @@ -62,74 +52,6 @@ unsigned long _pcictrl_gt64120; /* MIPS System controller register base */ unsigned long _pcictrl_msc; -char *prom_getenv(char *envname) -{ - /* - * Return a pointer to the given environment variable. - * In 64-bit mode: we're using 64-bit pointers, but all pointers - * in the PROM structures are only 32-bit, so we need some - * workarounds, if we are running in 64-bit mode. - */ - int i, index=0; - - i = strlen(envname); - - while (prom_envp(index)) { - if(strncmp(envname, prom_envp(index), i) == 0) { - return(prom_envp(index+1)); - } - index += 2; - } - - return NULL; -} - -static inline unsigned char str2hexnum(unsigned char c) -{ - if (c >= '0' && c <= '9') - return c - '0'; - if (c >= 'a' && c <= 'f') - return c - 'a' + 10; - return 0; /* foo */ -} - -static inline void str2eaddr(unsigned char *ea, unsigned char *str) -{ - int i; - - for (i = 0; i < 6; i++) { - unsigned char num; - - if((*str == '.') || (*str == ':')) - str++; - num = str2hexnum(*str++) << 4; - num |= (str2hexnum(*str++)); - ea[i] = num; - } -} - -int get_ethernet_addr(char *ethernet_addr) -{ - char *ethaddr_str; - - ethaddr_str = prom_getenv("ethaddr"); - if (!ethaddr_str) { - printk("ethaddr not set in boot prom\n"); - return -1; - } - str2eaddr(ethernet_addr, ethaddr_str); - - if (init_debug > 1) { - int i; - printk("get_ethernet_addr: "); - for (i=0; i<5; i++) - printk("%02x:", (unsigned char)*(ethernet_addr+i)); - printk("%02x\n", *(ethernet_addr+i)); - } - - return 0; -} - #ifdef CONFIG_SERIAL_8250_CONSOLE static void __init console_config(void) { @@ -138,8 +60,8 @@ static void __init console_config(void) char parity = '\0', bits = '\0', flow = '\0'; char *s; - if ((strstr(prom_getcmdline(), "console=")) == NULL) { - s = prom_getenv("modetty0"); + if ((strstr(fw_getcmdline(), "console=")) == NULL) { + s = fw_getenv("modetty0"); if (s) { while (*s >= '0' && *s <= '9') baud = baud*10 + *s++ - '0'; @@ -159,7 +81,7 @@ static void __init console_config(void) if (flow == '\0') flow = 'r'; sprintf(console_string, " console=ttyS0,%d%c%c%c", baud, parity, bits, flow); - strcat(prom_getcmdline(), console_string); + strcat(fw_getcmdline(), console_string); pr_info("Config serial console:%s\n", console_string); } } @@ -193,10 +115,6 @@ extern struct plat_smp_ops msmtc_smp_ops; void __init prom_init(void) { - prom_argc = fw_arg0; - _prom_argv = (int *) fw_arg1; - _prom_envp = (int *) fw_arg2; - mips_display_message("LINUX"); /* @@ -353,8 +271,8 @@ void __init prom_init(void) board_nmi_handler_setup = mips_nmi_setup; board_ejtag_handler_setup = mips_ejtag_setup; - prom_init_cmdline(); - prom_meminit(); + fw_init_cmdline(); + fw_meminit(); #ifdef CONFIG_SERIAL_8250_CONSOLE console_config(); #endif diff --git a/arch/mips/mti-malta/malta-memory.c b/arch/mips/mti-malta/malta-memory.c index f3d43aa..aacc796 100644 --- a/arch/mips/mti-malta/malta-memory.c +++ b/arch/mips/mti-malta/malta-memory.c @@ -27,30 +27,16 @@ #include #include #include +#include #include -/*#define DEBUG*/ - -enum yamon_memtypes { - yamon_dontuse, - yamon_prom, - yamon_free, -}; -static struct prom_pmemblock mdesc[PROM_MAX_PMEMBLOCKS]; - -#ifdef DEBUG -static char *mtypes[3] = { - "Dont use memory", - "YAMON PROM memory", - "Free memory", -}; -#endif +static fw_memblock_t mdesc[FW_MAX_MEMBLOCKS]; /* determined physical memory size, not overridden by command line args */ unsigned long physical_memsize = 0L; -static struct prom_pmemblock * __init prom_getmdesc(void) +fw_memblock_t * __init fw_getmdesc(void) { char *memsize_str; unsigned int memsize; @@ -58,15 +44,12 @@ static struct prom_pmemblock * __init prom_getmdesc(void) static char cmdline[COMMAND_LINE_SIZE] __initdata; /* otherwise look in the environment */ - memsize_str = prom_getenv("memsize"); + memsize_str = fw_getenv("memsize"); if (!memsize_str) { printk(KERN_WARNING "memsize not set in boot prom, set to default (32Mb)\n"); physical_memsize = 0x02000000; } else { -#ifdef DEBUG - pr_debug("prom_memsize = %s\n", memsize_str); -#endif physical_memsize = simple_strtol(memsize_str, NULL, 0); } @@ -90,11 +73,11 @@ static struct prom_pmemblock * __init prom_getmdesc(void) memset(mdesc, 0, sizeof(mdesc)); - mdesc[0].type = yamon_dontuse; + mdesc[0].type = fw_dontuse; mdesc[0].base = 0x00000000; mdesc[0].size = 0x00001000; - mdesc[1].type = yamon_prom; + mdesc[1].type = fw_code; mdesc[1].base = 0x00001000; mdesc[1].size = 0x000ef000; @@ -105,55 +88,44 @@ static struct prom_pmemblock * __init prom_getmdesc(void) * This mean that this area can't be used as DMA memory for PCI * devices. */ - mdesc[2].type = yamon_dontuse; + mdesc[2].type = fw_dontuse; mdesc[2].base = 0x000f0000; mdesc[2].size = 0x00010000; - mdesc[3].type = yamon_dontuse; + mdesc[3].type = fw_dontuse; mdesc[3].base = 0x00100000; mdesc[3].size = CPHYSADDR(PFN_ALIGN((unsigned long)&_end)) - mdesc[3].base; - mdesc[4].type = yamon_free; + mdesc[4].type = fw_free; mdesc[4].base = CPHYSADDR(PFN_ALIGN(&_end)); mdesc[4].size = memsize - mdesc[4].base; return &mdesc[0]; } -static int __init prom_memtype_classify(unsigned int type) +static int __init fw_memtype_classify(unsigned int type) { switch (type) { - case yamon_free: + case fw_free: return BOOT_MEM_RAM; - case yamon_prom: + case fw_code: return BOOT_MEM_ROM_DATA; default: return BOOT_MEM_RESERVED; } } -void __init prom_meminit(void) +void __init fw_meminit(void) { - struct prom_pmemblock *p; + fw_memblock_t *p; -#ifdef DEBUG - pr_debug("YAMON MEMORY DESCRIPTOR dump:\n"); - p = prom_getmdesc(); - while (p->size) { - int i = 0; - pr_debug("[%d,%p]: base<%08lx> size<%08lx> type<%s>\n", - i, p, p->base, p->size, mtypes[p->type]); - p++; - i++; - } -#endif - p = prom_getmdesc(); + p = fw_getmdesc(); while (p->size) { long type; unsigned long base, size; - type = prom_memtype_classify(p->type); + type = fw_memtype_classify(p->type); base = p->base; size = p->size; diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c index a855571..9e39376 100644 --- a/arch/mips/mti-malta/malta-setup.c +++ b/arch/mips/mti-malta/malta-setup.c @@ -25,9 +25,8 @@ #include #include -#include +#include #include -#include #include #include #include @@ -176,7 +175,7 @@ static void __init pci_clock_check(void) 33, 20, 25, 30, 12, 16, 37, 10 }; int pciclock = pciclocks[jmpr]; - char *argptr = prom_getcmdline(); + char *argptr = fw_getcmdline(); if (pciclock != 33 && !strstr(argptr, "idebus=")) { printk(KERN_WARNING "WARNING: PCI clock is %dMHz, " @@ -214,7 +213,7 @@ static void __init bonito_quirks_setup(void) { char *argptr; - argptr = prom_getcmdline(); + argptr = fw_getcmdline(); if (strstr(argptr, "debug")) { BONITO_BONGENCFG |= BONITO_BONGENCFG_DEBUGMODE; printk(KERN_INFO "Enabled Bonito debug mode\n"); @@ -226,7 +225,7 @@ static void __init bonito_quirks_setup(void) BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_CPUCOH_EN; printk(KERN_INFO "Enabled Bonito CPU coherency\n"); - argptr = prom_getcmdline(); + argptr = fw_getcmdline(); if (strstr(argptr, "iobcuncached")) { BONITO_PCICACHECTRL &= ~BONITO_PCICACHECTRL_IOBCCOH_EN; BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG & -- cgit v0.10.2 From 270690e00cdb034cd945ab597c24e6aff0227f77 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 's "MIPS: ar7 powertv build"]. [ralf@linux-mips.org: Fold in John Crispin 's "MIPS: unbreak powertv build"]. [ralf@linux-mips.org: Test. Build. Your. Fscking. Code. Or...] Signed-off-by: Steven J. Hill diff --git a/arch/mips/ar7/memory.c b/arch/mips/ar7/memory.c index 28abfee..92dfa48 100644 --- a/arch/mips/ar7/memory.c +++ b/arch/mips/ar7/memory.c @@ -30,7 +30,6 @@ #include #include -#include static int __init memsize(void) { 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 e7aed3e..0000000 --- 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) */ diff --git a/arch/mips/mti-malta/malta-display.c b/arch/mips/mti-malta/malta-display.c index 9bc58a2..ee62333 100644 --- a/arch/mips/mti-malta/malta-display.c +++ b/arch/mips/mti-malta/malta-display.c @@ -22,7 +22,6 @@ #include #include #include -#include extern const char display_string[]; static unsigned int display_count; diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c index 9caadce..71d753a 100644 --- a/arch/mips/mti-malta/malta-init.c +++ b/arch/mips/mti-malta/malta-init.c @@ -30,7 +30,6 @@ #include #include #include -#include #include #include #include diff --git a/arch/mips/mti-malta/malta-memory.c b/arch/mips/mti-malta/malta-memory.c index aacc796..902ba71 100644 --- a/arch/mips/mti-malta/malta-memory.c +++ b/arch/mips/mti-malta/malta-memory.c @@ -29,8 +29,6 @@ #include #include -#include - static fw_memblock_t mdesc[FW_MAX_MEMBLOCKS]; /* determined physical memory size, not overridden by command line args */ diff --git a/arch/mips/mti-malta/malta-time.c b/arch/mips/mti-malta/malta-time.c index a144b89..4dbdb2c 100644 --- a/arch/mips/mti-malta/malta-time.c +++ b/arch/mips/mti-malta/malta-time.c @@ -39,8 +39,6 @@ #include #include -#include - #include unsigned long cpu_khz; diff --git a/arch/mips/mti-sead3/sead3-display.c b/arch/mips/mti-sead3/sead3-display.c index e389326..9487599 100644 --- a/arch/mips/mti-sead3/sead3-display.c +++ b/arch/mips/mti-sead3/sead3-display.c @@ -8,7 +8,6 @@ #include #include #include -#include static unsigned int display_count; static unsigned int max_display_count; diff --git a/arch/mips/mti-sead3/sead3-init.c b/arch/mips/mti-sead3/sead3-init.c index 357c0e1..562dccf 100644 --- a/arch/mips/mti-sead3/sead3-init.c +++ b/arch/mips/mti-sead3/sead3-init.c @@ -12,7 +12,6 @@ #include #include #include -#include #include extern char except_vec_nmi; diff --git a/arch/mips/mti-sead3/sead3-setup.c b/arch/mips/mti-sead3/sead3-setup.c index 14633bc..b5059dc 100644 --- a/arch/mips/mti-sead3/sead3-setup.c +++ b/arch/mips/mti-sead3/sead3-setup.c @@ -11,7 +11,6 @@ #include #include -#include const char *get_system_type(void) { diff --git a/arch/mips/mti-sead3/sead3-time.c b/arch/mips/mti-sead3/sead3-time.c index 239e4e3..96b42eb 100644 --- a/arch/mips/mti-sead3/sead3-time.c +++ b/arch/mips/mti-sead3/sead3-time.c @@ -11,7 +11,6 @@ #include #include #include -#include unsigned long cpu_khz; diff --git a/arch/mips/powertv/init.c b/arch/mips/powertv/init.c index 5bd9d8f..a01baff 100644 --- a/arch/mips/powertv/init.c +++ b/arch/mips/powertv/init.c @@ -29,10 +29,11 @@ #include #include -#include #include #include +#include "init.h" + static int *_prom_envp; unsigned long _prom_memsize; diff --git a/arch/mips/powertv/init.h b/arch/mips/powertv/init.h index b194c34..c1a8bd0 100644 --- a/arch/mips/powertv/init.h +++ b/arch/mips/powertv/init.h @@ -23,4 +23,6 @@ #ifndef _POWERTV_INIT_H #define _POWERTV_INIT_H extern unsigned long _prom_memsize; +extern void prom_meminit(void); +extern char *prom_getenv(char *name); #endif diff --git a/arch/mips/powertv/memory.c b/arch/mips/powertv/memory.c index 6e5f1bd..bc2f3ca 100644 --- a/arch/mips/powertv/memory.c +++ b/arch/mips/powertv/memory.c @@ -29,7 +29,6 @@ #include #include -#include #include #include diff --git a/arch/mips/powertv/powertv_setup.c b/arch/mips/powertv/powertv_setup.c index 820b848..24689bf 100644 --- a/arch/mips/powertv/powertv_setup.c +++ b/arch/mips/powertv/powertv_setup.c @@ -31,7 +31,6 @@ #include #include #include -#include #include #include #include -- cgit v0.10.2 From 49bffbdc88fdd8f5eac40306a617252625a0fa35 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Mon, 25 Mar 2013 15:05:40 -0500 Subject: MIPS: FW: malta: Code formatting clean-ups. Clean-up code according to the 'checkpatch.pl' script. Signed-off-by: Steven J. Hill diff --git a/arch/mips/mti-malta/malta-display.c b/arch/mips/mti-malta/malta-display.c index ee62333..d4f8071 100644 --- a/arch/mips/mti-malta/malta-display.c +++ b/arch/mips/mti-malta/malta-display.c @@ -1,26 +1,19 @@ /* - * Carsten Langgaard, carstenl@mips.com - * Copyright (C) 1999,2000 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. + * 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. * * Display routines for display messages in MIPS boards ascii display. + * + * Copyright (C) 1999,2000,2012 MIPS Technologies, Inc. + * All rights reserved. + * Authors: Carsten Langgaard + * Steven J. Hill */ - #include #include -#include +#include + #include extern const char display_string[]; @@ -35,11 +28,11 @@ void mips_display_message(const char *str) if (unlikely(display == NULL)) display = ioremap(ASCII_DISPLAY_POS_BASE, 16*sizeof(int)); - for (i = 0; i <= 14; i=i+2) { - if (*str) - __raw_writel(*str++, display + i); - else - __raw_writel(' ', display + i); + for (i = 0; i <= 14; i += 2) { + if (*str) + __raw_writel(*str++, display + i); + else + __raw_writel(' ', display + i); } } diff --git a/arch/mips/mti-malta/malta-init.c b/arch/mips/mti-malta/malta-init.c index 71d753a..ff8caff 100644 --- a/arch/mips/mti-malta/malta-init.c +++ b/arch/mips/mti-malta/malta-init.c @@ -1,43 +1,28 @@ /* - * Copyright (C) 1999, 2000, 2004, 2005 MIPS Technologies, Inc. - * All rights reserved. - * Authors: Carsten Langgaard - * Maciej W. Rozycki - * - * 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. + * 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. * * PROM library initialisation code. + * + * Copyright (C) 1999,2000,2004,2005,2012 MIPS Technologies, Inc. + * All rights reserved. + * Authors: Carsten Langgaard + * Maciej W. Rozycki + * Steven J. Hill */ #include #include #include -#include -#include #include #include #include #include #include #include -#include -#include - #include -int init_debug; - static int mips_revision_corid; int mips_revision_sconid; @@ -64,12 +49,18 @@ static void __init console_config(void) if (s) { while (*s >= '0' && *s <= '9') baud = baud*10 + *s++ - '0'; - if (*s == ',') s++; - if (*s) parity = *s++; - if (*s == ',') s++; - if (*s) bits = *s++; - if (*s == ',') s++; - if (*s == 'h') flow = 'r'; + if (*s == ',') + s++; + if (*s) + parity = *s++; + if (*s == ',') + s++; + if (*s) + bits = *s++; + if (*s == ',') + s++; + if (*s == 'h') + flow = 'r'; } if (baud == 0) baud = 38400; @@ -79,7 +70,8 @@ static void __init console_config(void) bits = '8'; if (flow == '\0') flow = 'r'; - sprintf(console_string, " console=ttyS0,%d%c%c%c", baud, parity, bits, flow); + sprintf(console_string, " console=ttyS0,%d%c%c%c", baud, + parity, bits, flow); strcat(fw_getcmdline(), console_string); pr_info("Config serial console:%s\n", console_string); } @@ -223,7 +215,7 @@ void __init prom_init(void) case MIPS_REVISION_SCON_SOCIT: case MIPS_REVISION_SCON_ROCIT: _pcictrl_msc = (unsigned long)ioremap(MIPS_MSC01_PCI_REG_BASE, 0x2000); - mips_pci_controller: +mips_pci_controller: mb(); MSC_READ(MSC01_PCI_CFG, data); MSC_WRITE(MSC01_PCI_CFG, data & ~MSC01_PCI_CFG_EN_BIT); @@ -265,7 +257,7 @@ void __init prom_init(void) default: /* Unknown system controller */ mips_display_message("SC Error"); - while (1); /* We die here... */ + while (1); /* We die here... */ } board_nmi_handler_setup = mips_nmi_setup; board_ejtag_handler_setup = mips_ejtag_setup; diff --git a/arch/mips/mti-malta/malta-memory.c b/arch/mips/mti-malta/malta-memory.c index 902ba71..1f73d63 100644 --- a/arch/mips/mti-malta/malta-memory.c +++ b/arch/mips/mti-malta/malta-memory.c @@ -1,31 +1,21 @@ /* - * Carsten Langgaard, carstenl@mips.com - * Copyright (C) 1999,2000 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. + * 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. * * PROM library functions for acquiring/using memory descriptors given to * us from the YAMON. + * + * Copyright (C) 1999,2000,2012 MIPS Technologies, Inc. + * All rights reserved. + * Authors: Carsten Langgaard + * Steven J. Hill */ #include -#include #include -#include #include #include -#include #include #include @@ -36,19 +26,20 @@ unsigned long physical_memsize = 0L; fw_memblock_t * __init fw_getmdesc(void) { - char *memsize_str; + char *memsize_str, *ptr; unsigned int memsize; - char *ptr; static char cmdline[COMMAND_LINE_SIZE] __initdata; + long val; + int tmp; /* otherwise look in the environment */ memsize_str = fw_getenv("memsize"); if (!memsize_str) { - printk(KERN_WARNING - "memsize not set in boot prom, set to default (32Mb)\n"); + pr_warn("memsize not set in YAMON, set to default (32Mb)\n"); physical_memsize = 0x02000000; } else { - physical_memsize = simple_strtol(memsize_str, NULL, 0); + tmp = kstrtol(memsize_str, 0, &val); + physical_memsize = (unsigned long)val; } #ifdef CONFIG_CPU_BIG_ENDIAN @@ -92,7 +83,8 @@ fw_memblock_t * __init fw_getmdesc(void) mdesc[3].type = fw_dontuse; mdesc[3].base = 0x00100000; - mdesc[3].size = CPHYSADDR(PFN_ALIGN((unsigned long)&_end)) - mdesc[3].base; + mdesc[3].size = CPHYSADDR(PFN_ALIGN((unsigned long)&_end)) - + mdesc[3].base; mdesc[4].type = fw_free; mdesc[4].base = CPHYSADDR(PFN_ALIGN(&_end)); @@ -142,7 +134,7 @@ void __init prom_free_prom_memory(void) continue; addr = boot_mem_map.map[i].addr; - free_init_pages("prom memory", + free_init_pages("YAMON memory", addr, addr + boot_mem_map.map[i].size); } } diff --git a/arch/mips/mti-malta/malta-setup.c b/arch/mips/mti-malta/malta-setup.c index 9e39376..c72a069 100644 --- a/arch/mips/mti-malta/malta-setup.c +++ b/arch/mips/mti-malta/malta-setup.c @@ -178,13 +178,12 @@ static void __init pci_clock_check(void) char *argptr = fw_getcmdline(); if (pciclock != 33 && !strstr(argptr, "idebus=")) { - printk(KERN_WARNING "WARNING: PCI clock is %dMHz, " - "setting idebus\n", pciclock); + pr_warn("WARNING: PCI clock is %dMHz, setting idebus\n", + pciclock); argptr += strlen(argptr); sprintf(argptr, " idebus=%d", pciclock); if (pciclock < 20 || pciclock > 66) - printk(KERN_WARNING "WARNING: IDE timing " - "calculations will be incorrect\n"); + pr_warn("WARNING: IDE timing calculations will be incorrect\n"); } } #endif @@ -216,14 +215,14 @@ static void __init bonito_quirks_setup(void) argptr = fw_getcmdline(); if (strstr(argptr, "debug")) { BONITO_BONGENCFG |= BONITO_BONGENCFG_DEBUGMODE; - printk(KERN_INFO "Enabled Bonito debug mode\n"); + pr_info("Enabled Bonito debug mode\n"); } else BONITO_BONGENCFG &= ~BONITO_BONGENCFG_DEBUGMODE; #ifdef CONFIG_DMA_COHERENT if (BONITO_PCICACHECTRL & BONITO_PCICACHECTRL_CPUCOH_PRES) { BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_CPUCOH_EN; - printk(KERN_INFO "Enabled Bonito CPU coherency\n"); + pr_info("Enabled Bonito CPU coherency\n"); argptr = fw_getcmdline(); if (strstr(argptr, "iobcuncached")) { @@ -231,13 +230,13 @@ static void __init bonito_quirks_setup(void) BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG & ~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED | BONITO_PCIMEMBASECFG_MEMBASE1_CACHED); - printk(KERN_INFO "Disabled Bonito IOBC coherency\n"); + pr_info("Disabled Bonito IOBC coherency\n"); } else { BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_IOBCCOH_EN; BONITO_PCIMEMBASECFG |= (BONITO_PCIMEMBASECFG_MEMBASE0_CACHED | BONITO_PCIMEMBASECFG_MEMBASE1_CACHED); - printk(KERN_INFO "Enabled Bonito IOBC coherency\n"); + pr_info("Enabled Bonito IOBC coherency\n"); } } else panic("Hardware DMA cache coherency not supported"); -- cgit v0.10.2 From d532f3d26716a39dfd4b88d687bd344fbe77e390 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 Signed-off-by: Ralf Baechle diff --git a/arch/mips/include/asm/mmu_context.h b/arch/mips/include/asm/mmu_context.h index e81d719..bab1980 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); diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S index ecb347c..5360b1d 100644 --- a/arch/mips/kernel/genex.S +++ b/arch/mips/kernel/genex.S @@ -480,7 +480,7 @@ NESTED(nmi_handler, PT_SIZE, sp) .set noreorder /* check if TLB contains a entry for EPC */ MFC0 k1, CP0_ENTRYHI - andi k1, 0xff /* ASID_MASK */ + andi k1, 0xff /* ASID_MASK patched at run-time!! */ MFC0 k0, CP0_EPC PTR_SRL k0, _PAGE_SHIFT + 1 PTR_SLL k0, _PAGE_SHIFT + 1 diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c index 7186222..31d22f3 100644 --- a/arch/mips/kernel/smtc.c +++ b/arch/mips/kernel/smtc.c @@ -111,7 +111,7 @@ static int vpe0limit; static int ipibuffers; static int nostlb; static int asidmask; -unsigned long smtc_asid_mask = 0xff; +unsigned int smtc_asid_mask = 0xff; static int __init vpe0tcs(char *str) { @@ -1395,7 +1395,7 @@ void smtc_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu) asid = asid_cache(cpu); do { - if (!((asid += ASID_INC) & ASID_MASK) ) { + if (!ASID_MASK(ASID_INC(asid))) { if (cpu_has_vtag_icache) flush_icache_all(); /* Traverse all online CPUs (hack requires contiguous range) */ @@ -1414,7 +1414,7 @@ void smtc_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu) mips_ihb(); } tcstat = read_tc_c0_tcstatus(); - smtc_live_asid[tlb][(tcstat & ASID_MASK)] |= (asiduse)(0x1 << i); + smtc_live_asid[tlb][ASID_MASK(tcstat)] |= (asiduse)(0x1 << i); if (!prevhalt) write_tc_c0_tchalt(0); } @@ -1423,7 +1423,7 @@ void smtc_get_new_mmu_context(struct mm_struct *mm, unsigned long cpu) asid = ASID_FIRST_VERSION; local_flush_tlb_all(); /* start new asid cycle */ } - } while (smtc_live_asid[tlb][(asid & ASID_MASK)]); + } while (smtc_live_asid[tlb][ASID_MASK(asid)]); /* * SMTC shares the TLB within VPEs and possibly across all VPEs. @@ -1461,7 +1461,7 @@ void smtc_flush_tlb_asid(unsigned long asid) tlb_read(); ehb(); ehi = read_c0_entryhi(); - if ((ehi & ASID_MASK) == asid) { + if (ASID_MASK(ehi) == asid) { /* * Invalidate only entries with specified ASID, * makiing sure all entries differ. diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index c3abb88..4b6b607 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -1547,6 +1547,7 @@ void __cpuinit per_cpu_trap_init(bool is_boot_cpu) unsigned int cpu = smp_processor_id(); unsigned int status_set = ST0_CU0; unsigned int hwrena = cpu_hwrena_impl_bits; + unsigned long asid = 0; #ifdef CONFIG_MIPS_MT_SMTC int secondaryTC = 0; int bootTC = (cpu == 0); @@ -1630,8 +1631,9 @@ void __cpuinit per_cpu_trap_init(bool is_boot_cpu) } #endif /* CONFIG_MIPS_MT_SMTC */ - if (!cpu_data[cpu].asid_cache) - cpu_data[cpu].asid_cache = ASID_FIRST_VERSION; + asid = ASID_FIRST_VERSION; + cpu_data[cpu].asid_cache = asid; + TLBMISS_HANDLER_SETUP(); atomic_inc(&init_mm.mm_count); current->active_mm = &init_mm; diff --git a/arch/mips/lib/dump_tlb.c b/arch/mips/lib/dump_tlb.c index 32b9f21..8a12d00 100644 --- a/arch/mips/lib/dump_tlb.c +++ b/arch/mips/lib/dump_tlb.c @@ -11,6 +11,7 @@ #include #include #include +#include static inline const char *msk2str(unsigned int mask) { @@ -55,7 +56,7 @@ static void dump_tlb(int first, int last) s_pagemask = read_c0_pagemask(); s_entryhi = read_c0_entryhi(); s_index = read_c0_index(); - asid = s_entryhi & 0xff; + asid = ASID_MASK(s_entryhi); for (i = first; i <= last; i++) { write_c0_index(i); @@ -85,7 +86,7 @@ static void dump_tlb(int first, int last) printk("va=%0*lx asid=%02lx\n", width, (entryhi & ~0x1fffUL), - entryhi & 0xff); + ASID_MASK(entryhi)); printk("\t[pa=%0*llx c=%d d=%d v=%d g=%d] ", width, (entrylo0 << 6) & PAGE_MASK, c0, diff --git a/arch/mips/lib/r3k_dump_tlb.c b/arch/mips/lib/r3k_dump_tlb.c index 91615c2..8327698 100644 --- a/arch/mips/lib/r3k_dump_tlb.c +++ b/arch/mips/lib/r3k_dump_tlb.c @@ -9,6 +9,7 @@ #include #include +#include #include #include #include @@ -21,7 +22,7 @@ static void dump_tlb(int first, int last) unsigned int asid; unsigned long entryhi, entrylo0; - asid = read_c0_entryhi() & 0xfc0; + asid = ASID_MASK(read_c0_entryhi()); for (i = first; i <= last; i++) { write_c0_index(i<<8); @@ -35,7 +36,7 @@ static void dump_tlb(int first, int last) /* Unused entries have a virtual address of KSEG0. */ if ((entryhi & 0xffffe000) != 0x80000000 - && (entryhi & 0xfc0) == asid) { + && (ASID_MASK(entryhi) == asid)) { /* * Only print entries in use */ @@ -44,7 +45,7 @@ static void dump_tlb(int first, int last) printk("va=%08lx asid=%08lx" " [pa=%06lx n=%d d=%d v=%d g=%d]", (entryhi & 0xffffe000), - entryhi & 0xfc0, + ASID_MASK(entryhi), entrylo0 & PAGE_MASK, (entrylo0 & (1 << 11)) ? 1 : 0, (entrylo0 & (1 << 10)) ? 1 : 0, diff --git a/arch/mips/mm/tlb-r3k.c b/arch/mips/mm/tlb-r3k.c index a63d1ed..4a13c15 100644 --- a/arch/mips/mm/tlb-r3k.c +++ b/arch/mips/mm/tlb-r3k.c @@ -51,7 +51,7 @@ void local_flush_tlb_all(void) #endif local_irq_save(flags); - old_ctx = read_c0_entryhi() & ASID_MASK; + old_ctx = ASID_MASK(read_c0_entryhi()); write_c0_entrylo0(0); entry = r3k_have_wired_reg ? read_c0_wired() : 8; for (; entry < current_cpu_data.tlbsize; entry++) { @@ -87,13 +87,13 @@ void local_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, #ifdef DEBUG_TLB printk("[tlbrange<%lu,0x%08lx,0x%08lx>]", - cpu_context(cpu, mm) & ASID_MASK, start, end); + ASID_MASK(cpu_context(cpu, mm)), start, end); #endif local_irq_save(flags); size = (end - start + (PAGE_SIZE - 1)) >> PAGE_SHIFT; if (size <= current_cpu_data.tlbsize) { - int oldpid = read_c0_entryhi() & ASID_MASK; - int newpid = cpu_context(cpu, mm) & ASID_MASK; + int oldpid = ASID_MASK(read_c0_entryhi()); + int newpid = ASID_MASK(cpu_context(cpu, mm)); start &= PAGE_MASK; end += PAGE_SIZE - 1; @@ -166,10 +166,10 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long page) #ifdef DEBUG_TLB printk("[tlbpage<%lu,0x%08lx>]", cpu_context(cpu, vma->vm_mm), page); #endif - newpid = cpu_context(cpu, vma->vm_mm) & ASID_MASK; + newpid = ASID_MASK(cpu_context(cpu, vma->vm_mm)); page &= PAGE_MASK; local_irq_save(flags); - oldpid = read_c0_entryhi() & ASID_MASK; + oldpid = ASID_MASK(read_c0_entryhi()); write_c0_entryhi(page | newpid); BARRIER; tlb_probe(); @@ -197,10 +197,10 @@ void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte) if (current->active_mm != vma->vm_mm) return; - pid = read_c0_entryhi() & ASID_MASK; + pid = ASID_MASK(read_c0_entryhi()); #ifdef DEBUG_TLB - if ((pid != (cpu_context(cpu, vma->vm_mm) & ASID_MASK)) || (cpu_context(cpu, vma->vm_mm) == 0)) { + if ((pid != ASID_MASK(cpu_context(cpu, vma->vm_mm))) || (cpu_context(cpu, vma->vm_mm) == 0)) { printk("update_mmu_cache: Wheee, bogus tlbpid mmpid=%lu tlbpid=%d\n", (cpu_context(cpu, vma->vm_mm)), pid); } @@ -241,7 +241,7 @@ void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1, local_irq_save(flags); /* Save old context and create impossible VPN2 value */ - old_ctx = read_c0_entryhi() & ASID_MASK; + old_ctx = ASID_MASK(read_c0_entryhi()); old_pagemask = read_c0_pagemask(); w = read_c0_wired(); write_c0_wired(w + 1); @@ -264,7 +264,7 @@ void add_wired_entry(unsigned long entrylo0, unsigned long entrylo1, #endif local_irq_save(flags); - old_ctx = read_c0_entryhi() & ASID_MASK; + old_ctx = ASID_MASK(read_c0_entryhi()); write_c0_entrylo0(entrylo0); write_c0_entryhi(entryhi); write_c0_index(wired); diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c index 493131c..3d03a2c 100644 --- a/arch/mips/mm/tlb-r4k.c +++ b/arch/mips/mm/tlb-r4k.c @@ -285,7 +285,7 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte) ENTER_CRITICAL(flags); - pid = read_c0_entryhi() & ASID_MASK; + pid = ASID_MASK(read_c0_entryhi()); address &= (PAGE_MASK << 1); write_c0_entryhi(address | pid); pgdp = pgd_offset(vma->vm_mm, address); diff --git a/arch/mips/mm/tlb-r8k.c b/arch/mips/mm/tlb-r8k.c index 91c2499..122f920 100644 --- a/arch/mips/mm/tlb-r8k.c +++ b/arch/mips/mm/tlb-r8k.c @@ -195,7 +195,7 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte) if (current->active_mm != vma->vm_mm) return; - pid = read_c0_entryhi() & ASID_MASK; + pid = ASID_MASK(read_c0_entryhi()); local_irq_save(flags); address &= PAGE_MASK; diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c index 820e661..e2a9e36 100644 --- a/arch/mips/mm/tlbex.c +++ b/arch/mips/mm/tlbex.c @@ -29,6 +29,7 @@ #include #include +#include #include #include #include @@ -305,6 +306,48 @@ static struct uasm_reloc relocs[128] __cpuinitdata; static int check_for_high_segbits __cpuinitdata; #endif +static void __cpuinit insn_fixup(unsigned int **start, unsigned int **stop, + unsigned int i_const) +{ + unsigned int **p, *ip; + + for (p = start; p < stop; p++) { + ip = *p; + *ip = (*ip & 0xffff0000) | i_const; + } + local_flush_icache_range((unsigned long)*p, (unsigned long)((*p) + 1)); +} + +#define asid_insn_fixup(section, const) \ +do { \ + extern unsigned int *__start_ ## section; \ + extern unsigned int *__stop_ ## section; \ + insn_fixup(&__start_ ## section, &__stop_ ## section, const); \ +} while(0) + +/* + * Caller is assumed to flush the caches before the first context switch. + */ +static void __cpuinit setup_asid(unsigned int inc, unsigned int mask, + unsigned int version_mask, + unsigned int first_version) +{ + extern asmlinkage void handle_ri_rdhwr_vivt(void); + unsigned long *vivt_exc; + + asid_insn_fixup(__asid_inc, inc); + asid_insn_fixup(__asid_mask, mask); + asid_insn_fixup(__asid_version_mask, version_mask); + asid_insn_fixup(__asid_first_version, first_version); + + /* Patch up the 'handle_ri_rdhwr_vivt' handler. */ + vivt_exc = (unsigned long *) &handle_ri_rdhwr_vivt; + vivt_exc++; + *vivt_exc = (*vivt_exc & ~mask) | mask; + + current_cpu_data.asid_cache = first_version; +} + static int check_for_high_segbits __cpuinitdata; static unsigned int kscratch_used_mask __cpuinitdata; @@ -2162,6 +2205,7 @@ void __cpuinit build_tlb_refill_handler(void) case CPU_TX3922: case CPU_TX3927: #ifndef CONFIG_MIPS_PGD_C0_CONTEXT + setup_asid(0x40, 0xfc0, 0xf000, ASID_FIRST_VERSION_R3000); build_r3000_tlb_refill_handler(); if (!run_once) { build_r3000_tlb_load_handler(); @@ -2184,6 +2228,11 @@ void __cpuinit build_tlb_refill_handler(void) break; default: +#ifndef CONFIG_MIPS_MT_SMTC + setup_asid(0x1, 0xff, 0xff00, ASID_FIRST_VERSION_R4000); +#else + setup_asid(0x1, smtc_asid_mask, 0xff00, ASID_FIRST_VERSION_R4000); +#endif if (!run_once) { scratch_reg = allocate_kscratch(); #ifdef CONFIG_MIPS_PGD_C0_CONTEXT -- cgit v0.10.2 From f6b06d9361a008afb93b97fb3683a6e92d69d0f4 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Mon, 25 Mar 2013 12:01:00 -0500 Subject: MIPS: microMIPS: Support dynamic ASID sizing. Changes for pure microMIPS cores to dynamically determine the ASID size at boot time. Includes bug fix https://patchwork.linux-mips.org/patch/5230/ Signed-off-by: Steven J. Hill Signed-off-by: Jonas Gorski diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c index e2a9e36..fb4ca99 100644 --- a/arch/mips/mm/tlbex.c +++ b/arch/mips/mm/tlbex.c @@ -309,13 +309,32 @@ 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, *ip; + unsigned int **p; 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) \ @@ -335,6 +354,14 @@ 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); @@ -342,6 +369,9 @@ 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; -- cgit v0.10.2 From 8fe4bb98e42945ddf2c0d47cec647ef76909e812 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Mon, 25 Mar 2013 12:07:40 -0500 Subject: MIPS: microMIPS: Fix incorrect mask for jump immediate. Jump or branch target addresses have the first bit set. The original mask did not take this into account and will cause a field overflow warning for the target address when a jump immediate instruction is built. Signed-off-by: Steven J. Hill diff --git a/arch/mips/mm/uasm-micromips.c b/arch/mips/mm/uasm-micromips.c index 476d50c..162ee6d 100644 --- a/arch/mips/mm/uasm-micromips.c +++ b/arch/mips/mm/uasm-micromips.c @@ -130,7 +130,8 @@ static inline __uasminit u32 build_bimm(s32 arg) static inline __uasminit u32 build_jimm(u32 arg) { - WARN(arg & ~(JIMM_MASK << 2), + + WARN(arg & ~((JIMM_MASK << 2) | 1), KERN_WARNING "Micro-assembler field overflow\n"); return (arg >> 1) & JIMM_MASK; -- cgit v0.10.2 From cf6d905828c2c75ebe8c818901e71e09ffe6f629 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 diff --git a/arch/mips/include/asm/uasm.h b/arch/mips/include/asm/uasm.h index f924b87..370d967 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 */ diff --git a/arch/mips/mm/uasm-mips.c b/arch/mips/mm/uasm-mips.c index e78e74d..5fcdd8f 100644 --- a/arch/mips/mm/uasm-mips.c +++ b/arch/mips/mm/uasm-mips.c @@ -20,6 +20,7 @@ #include #include #include +#define UASM_ISA _UASM_ISA_CLASSIC #include #define RS_MASK 0x1f @@ -38,6 +39,14 @@ | (e) << RE_SH \ | (f) << FUNC_SH) +/* Define these when we are not the ISA the kernel is being compiled with. */ +#ifdef CONFIG_CPU_MICROMIPS +#define CL_uasm_i_b(buf, off) ISAOPC(_beq)(buf, 0, 0, off) +#define CL_uasm_i_beqz(buf, rs, off) ISAOPC(_beq)(buf, rs, 0, off) +#define CL_uasm_i_beqzl(buf, rs, off) ISAOPC(_beql)(buf, rs, 0, off) +#define CL_uasm_i_bnez(buf, rs, off) ISAOPC(_bne)(buf, rs, 0, off) +#endif + #include "uasm.c" static struct insn insn_table[] __uasminitdata = { -- cgit v0.10.2 From 102cedc32a6e3cd537374a3678d407591d5a6fab Mon Sep 17 00:00:00 2001 From: Leonid Yegoshin 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 Signed-off-by: Steven J. Hill diff --git a/arch/mips/include/asm/fpu_emulator.h b/arch/mips/include/asm/fpu_emulator.h index 3b40927..2abb587 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 f1eadf7..b27091e 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 4715337..23ec2f5 100644 --- a/arch/mips/include/uapi/asm/inst.h +++ b/arch/mips/include/uapi/asm/inst.h @@ -424,6 +424,11 @@ enum mm_16d_minor_op { }; /* + * (microMIPS & MIPS16e) NOP instruction. + */ +#define MM_NOP16 0x0c00 + +/* * Damn ... bitfields depend from byteorder :-( */ #ifdef __MIPSEB__ diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 4b6b607..333782b 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -675,7 +675,7 @@ asmlinkage void do_ov(struct pt_regs *regs) force_sig_info(SIGFPE, &info, current); } -static int process_fpemu_return(int sig, void __user *fault_addr) +int process_fpemu_return(int sig, void __user *fault_addr) { if (sig == SIGSEGV || sig == SIGBUS) { struct siginfo si = {0}; diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c index 6087a54..f4c94ff 100644 --- a/arch/mips/kernel/unaligned.c +++ b/arch/mips/kernel/unaligned.c @@ -83,6 +83,8 @@ #include #include #include +#include +#include #include #include @@ -108,6 +110,7 @@ static void emulate_load_store_insn(struct pt_regs *regs, union mips_instruction insn; unsigned long value; unsigned int res; + void __user *fault_addr = NULL; perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0); @@ -447,10 +450,21 @@ static void emulate_load_store_insn(struct pt_regs *regs, case ldc1_op: case swc1_op: case sdc1_op: - /* - * I herewith declare: this does not happen. So send SIGBUS. - */ - goto sigbus; + die_if_kernel("Unaligned FP access in kernel code", regs); + BUG_ON(!used_math()); + BUG_ON(!is_fpu_owner()); + + lose_fpu(1); /* Save FPU state for the emulator. */ + res = fpu_emulator_cop1Handler(regs, ¤t->thread.fpu, 1, + &fault_addr); + own_fpu(1); /* Restore FPU state. */ + + /* Signal if something went wrong. */ + process_fpemu_return(res, fault_addr); + + if (res == 0) + break; + return; /* * COP2 is available to implementor for application specific use. diff --git a/arch/mips/math-emu/cp1emu.c b/arch/mips/math-emu/cp1emu.c index afb5a0b..f03771900 100644 --- a/arch/mips/math-emu/cp1emu.c +++ b/arch/mips/math-emu/cp1emu.c @@ -45,6 +45,7 @@ #include #include #include +#include #include #include @@ -81,6 +82,11 @@ DEFINE_PER_CPU(struct mips_fpu_emulator_stats, fpuemustats); /* Determine rounding mode from the RM bits of the FCSR */ #define modeindex(v) ((v) & FPU_CSR_RM) +/* microMIPS bitfields */ +#define MM_POOL32A_MINOR_MASK 0x3f +#define MM_POOL32A_MINOR_SHIFT 0x6 +#define MM_MIPS32_COND_FC 0x30 + /* Convert Mips rounding mode (0..3) to IEEE library modes. */ static const unsigned char ieee_rm[4] = { [FPU_CSR_RN] = IEEE754_RN, @@ -110,6 +116,556 @@ static const unsigned int fpucondbit[8] = { }; #endif +/* (microMIPS) Convert 16-bit register encoding to 32-bit register encoding. */ +static const unsigned int reg16to32map[8] = {16, 17, 2, 3, 4, 5, 6, 7}; + +/* (microMIPS) Convert certain microMIPS instructions to MIPS32 format. */ +static const int sd_format[] = {16, 17, 0, 0, 0, 0, 0, 0}; +static const int sdps_format[] = {16, 17, 22, 0, 0, 0, 0, 0}; +static const int dwl_format[] = {17, 20, 21, 0, 0, 0, 0, 0}; +static const int swl_format[] = {16, 20, 21, 0, 0, 0, 0, 0}; + +/* + * This functions translates a 32-bit microMIPS instruction + * into a 32-bit MIPS32 instruction. Returns 0 on success + * and SIGILL otherwise. + */ +static int microMIPS32_to_MIPS32(union mips_instruction *insn_ptr) +{ + union mips_instruction insn = *insn_ptr; + union mips_instruction mips32_insn = insn; + int func, fmt, op; + + switch (insn.mm_i_format.opcode) { + case mm_ldc132_op: + mips32_insn.mm_i_format.opcode = ldc1_op; + mips32_insn.mm_i_format.rt = insn.mm_i_format.rs; + mips32_insn.mm_i_format.rs = insn.mm_i_format.rt; + break; + case mm_lwc132_op: + mips32_insn.mm_i_format.opcode = lwc1_op; + mips32_insn.mm_i_format.rt = insn.mm_i_format.rs; + mips32_insn.mm_i_format.rs = insn.mm_i_format.rt; + break; + case mm_sdc132_op: + mips32_insn.mm_i_format.opcode = sdc1_op; + mips32_insn.mm_i_format.rt = insn.mm_i_format.rs; + mips32_insn.mm_i_format.rs = insn.mm_i_format.rt; + break; + case mm_swc132_op: + mips32_insn.mm_i_format.opcode = swc1_op; + mips32_insn.mm_i_format.rt = insn.mm_i_format.rs; + mips32_insn.mm_i_format.rs = insn.mm_i_format.rt; + break; + case mm_pool32i_op: + /* NOTE: offset is << by 1 if in microMIPS mode. */ + if ((insn.mm_i_format.rt == mm_bc1f_op) || + (insn.mm_i_format.rt == mm_bc1t_op)) { + mips32_insn.fb_format.opcode = cop1_op; + mips32_insn.fb_format.bc = bc_op; + mips32_insn.fb_format.flag = + (insn.mm_i_format.rt == mm_bc1t_op) ? 1 : 0; + } else + return SIGILL; + break; + case mm_pool32f_op: + switch (insn.mm_fp0_format.func) { + case mm_32f_01_op: + case mm_32f_11_op: + case mm_32f_02_op: + case mm_32f_12_op: + case mm_32f_41_op: + case mm_32f_51_op: + case mm_32f_42_op: + case mm_32f_52_op: + op = insn.mm_fp0_format.func; + if (op == mm_32f_01_op) + func = madd_s_op; + else if (op == mm_32f_11_op) + func = madd_d_op; + else if (op == mm_32f_02_op) + func = nmadd_s_op; + else if (op == mm_32f_12_op) + func = nmadd_d_op; + else if (op == mm_32f_41_op) + func = msub_s_op; + else if (op == mm_32f_51_op) + func = msub_d_op; + else if (op == mm_32f_42_op) + func = nmsub_s_op; + else + func = nmsub_d_op; + mips32_insn.fp6_format.opcode = cop1x_op; + mips32_insn.fp6_format.fr = insn.mm_fp6_format.fr; + mips32_insn.fp6_format.ft = insn.mm_fp6_format.ft; + mips32_insn.fp6_format.fs = insn.mm_fp6_format.fs; + mips32_insn.fp6_format.fd = insn.mm_fp6_format.fd; + mips32_insn.fp6_format.func = func; + break; + case mm_32f_10_op: + func = -1; /* Invalid */ + op = insn.mm_fp5_format.op & 0x7; + if (op == mm_ldxc1_op) + func = ldxc1_op; + else if (op == mm_sdxc1_op) + func = sdxc1_op; + else if (op == mm_lwxc1_op) + func = lwxc1_op; + else if (op == mm_swxc1_op) + func = swxc1_op; + + if (func != -1) { + mips32_insn.r_format.opcode = cop1x_op; + mips32_insn.r_format.rs = + insn.mm_fp5_format.base; + mips32_insn.r_format.rt = + insn.mm_fp5_format.index; + mips32_insn.r_format.rd = 0; + mips32_insn.r_format.re = insn.mm_fp5_format.fd; + mips32_insn.r_format.func = func; + } else + return SIGILL; + break; + case mm_32f_40_op: + op = -1; /* Invalid */ + if (insn.mm_fp2_format.op == mm_fmovt_op) + op = 1; + else if (insn.mm_fp2_format.op == mm_fmovf_op) + op = 0; + if (op != -1) { + mips32_insn.fp0_format.opcode = cop1_op; + mips32_insn.fp0_format.fmt = + sdps_format[insn.mm_fp2_format.fmt]; + mips32_insn.fp0_format.ft = + (insn.mm_fp2_format.cc<<2) + op; + mips32_insn.fp0_format.fs = + insn.mm_fp2_format.fs; + mips32_insn.fp0_format.fd = + insn.mm_fp2_format.fd; + mips32_insn.fp0_format.func = fmovc_op; + } else + return SIGILL; + break; + case mm_32f_60_op: + func = -1; /* Invalid */ + if (insn.mm_fp0_format.op == mm_fadd_op) + func = fadd_op; + else if (insn.mm_fp0_format.op == mm_fsub_op) + func = fsub_op; + else if (insn.mm_fp0_format.op == mm_fmul_op) + func = fmul_op; + else if (insn.mm_fp0_format.op == mm_fdiv_op) + func = fdiv_op; + if (func != -1) { + mips32_insn.fp0_format.opcode = cop1_op; + mips32_insn.fp0_format.fmt = + sdps_format[insn.mm_fp0_format.fmt]; + mips32_insn.fp0_format.ft = + insn.mm_fp0_format.ft; + mips32_insn.fp0_format.fs = + insn.mm_fp0_format.fs; + mips32_insn.fp0_format.fd = + insn.mm_fp0_format.fd; + mips32_insn.fp0_format.func = func; + } else + return SIGILL; + break; + case mm_32f_70_op: + func = -1; /* Invalid */ + if (insn.mm_fp0_format.op == mm_fmovn_op) + func = fmovn_op; + else if (insn.mm_fp0_format.op == mm_fmovz_op) + func = fmovz_op; + if (func != -1) { + mips32_insn.fp0_format.opcode = cop1_op; + mips32_insn.fp0_format.fmt = + sdps_format[insn.mm_fp0_format.fmt]; + mips32_insn.fp0_format.ft = + insn.mm_fp0_format.ft; + mips32_insn.fp0_format.fs = + insn.mm_fp0_format.fs; + mips32_insn.fp0_format.fd = + insn.mm_fp0_format.fd; + mips32_insn.fp0_format.func = func; + } else + return SIGILL; + break; + case mm_32f_73_op: /* POOL32FXF */ + switch (insn.mm_fp1_format.op) { + case mm_movf0_op: + case mm_movf1_op: + case mm_movt0_op: + case mm_movt1_op: + if ((insn.mm_fp1_format.op & 0x7f) == + mm_movf0_op) + op = 0; + else + op = 1; + mips32_insn.r_format.opcode = spec_op; + mips32_insn.r_format.rs = insn.mm_fp4_format.fs; + mips32_insn.r_format.rt = + (insn.mm_fp4_format.cc << 2) + op; + mips32_insn.r_format.rd = insn.mm_fp4_format.rt; + mips32_insn.r_format.re = 0; + mips32_insn.r_format.func = movc_op; + break; + case mm_fcvtd0_op: + case mm_fcvtd1_op: + case mm_fcvts0_op: + case mm_fcvts1_op: + if ((insn.mm_fp1_format.op & 0x7f) == + mm_fcvtd0_op) { + func = fcvtd_op; + fmt = swl_format[insn.mm_fp3_format.fmt]; + } else { + func = fcvts_op; + fmt = dwl_format[insn.mm_fp3_format.fmt]; + } + mips32_insn.fp0_format.opcode = cop1_op; + mips32_insn.fp0_format.fmt = fmt; + mips32_insn.fp0_format.ft = 0; + mips32_insn.fp0_format.fs = + insn.mm_fp3_format.fs; + mips32_insn.fp0_format.fd = + insn.mm_fp3_format.rt; + mips32_insn.fp0_format.func = func; + break; + case mm_fmov0_op: + case mm_fmov1_op: + case mm_fabs0_op: + case mm_fabs1_op: + case mm_fneg0_op: + case mm_fneg1_op: + if ((insn.mm_fp1_format.op & 0x7f) == + mm_fmov0_op) + func = fmov_op; + else if ((insn.mm_fp1_format.op & 0x7f) == + mm_fabs0_op) + func = fabs_op; + else + func = fneg_op; + mips32_insn.fp0_format.opcode = cop1_op; + mips32_insn.fp0_format.fmt = + sdps_format[insn.mm_fp3_format.fmt]; + mips32_insn.fp0_format.ft = 0; + mips32_insn.fp0_format.fs = + insn.mm_fp3_format.fs; + mips32_insn.fp0_format.fd = + insn.mm_fp3_format.rt; + mips32_insn.fp0_format.func = func; + break; + case mm_ffloorl_op: + case mm_ffloorw_op: + case mm_fceill_op: + case mm_fceilw_op: + case mm_ftruncl_op: + case mm_ftruncw_op: + case mm_froundl_op: + case mm_froundw_op: + case mm_fcvtl_op: + case mm_fcvtw_op: + if (insn.mm_fp1_format.op == mm_ffloorl_op) + func = ffloorl_op; + else if (insn.mm_fp1_format.op == mm_ffloorw_op) + func = ffloor_op; + else if (insn.mm_fp1_format.op == mm_fceill_op) + func = fceill_op; + else if (insn.mm_fp1_format.op == mm_fceilw_op) + func = fceil_op; + else if (insn.mm_fp1_format.op == mm_ftruncl_op) + func = ftruncl_op; + else if (insn.mm_fp1_format.op == mm_ftruncw_op) + func = ftrunc_op; + else if (insn.mm_fp1_format.op == mm_froundl_op) + func = froundl_op; + else if (insn.mm_fp1_format.op == mm_froundw_op) + func = fround_op; + else if (insn.mm_fp1_format.op == mm_fcvtl_op) + func = fcvtl_op; + else + func = fcvtw_op; + mips32_insn.fp0_format.opcode = cop1_op; + mips32_insn.fp0_format.fmt = + sd_format[insn.mm_fp1_format.fmt]; + mips32_insn.fp0_format.ft = 0; + mips32_insn.fp0_format.fs = + insn.mm_fp1_format.fs; + mips32_insn.fp0_format.fd = + insn.mm_fp1_format.rt; + mips32_insn.fp0_format.func = func; + break; + case mm_frsqrt_op: + case mm_fsqrt_op: + case mm_frecip_op: + if (insn.mm_fp1_format.op == mm_frsqrt_op) + func = frsqrt_op; + else if (insn.mm_fp1_format.op == mm_fsqrt_op) + func = fsqrt_op; + else + func = frecip_op; + mips32_insn.fp0_format.opcode = cop1_op; + mips32_insn.fp0_format.fmt = + sdps_format[insn.mm_fp1_format.fmt]; + mips32_insn.fp0_format.ft = 0; + mips32_insn.fp0_format.fs = + insn.mm_fp1_format.fs; + mips32_insn.fp0_format.fd = + insn.mm_fp1_format.rt; + mips32_insn.fp0_format.func = func; + break; + case mm_mfc1_op: + case mm_mtc1_op: + case mm_cfc1_op: + case mm_ctc1_op: + if (insn.mm_fp1_format.op == mm_mfc1_op) + op = mfc_op; + else if (insn.mm_fp1_format.op == mm_mtc1_op) + op = mtc_op; + else if (insn.mm_fp1_format.op == mm_cfc1_op) + op = cfc_op; + else + op = ctc_op; + mips32_insn.fp1_format.opcode = cop1_op; + mips32_insn.fp1_format.op = op; + mips32_insn.fp1_format.rt = + insn.mm_fp1_format.rt; + mips32_insn.fp1_format.fs = + insn.mm_fp1_format.fs; + mips32_insn.fp1_format.fd = 0; + mips32_insn.fp1_format.func = 0; + break; + default: + return SIGILL; + break; + } + break; + case mm_32f_74_op: /* c.cond.fmt */ + mips32_insn.fp0_format.opcode = cop1_op; + mips32_insn.fp0_format.fmt = + sdps_format[insn.mm_fp4_format.fmt]; + mips32_insn.fp0_format.ft = insn.mm_fp4_format.rt; + mips32_insn.fp0_format.fs = insn.mm_fp4_format.fs; + mips32_insn.fp0_format.fd = insn.mm_fp4_format.cc << 2; + mips32_insn.fp0_format.func = + insn.mm_fp4_format.cond | MM_MIPS32_COND_FC; + break; + default: + return SIGILL; + break; + } + break; + default: + return SIGILL; + break; + } + + *insn_ptr = mips32_insn; + return 0; +} + +int mm_isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn, + unsigned long *contpc) +{ + union mips_instruction insn = (union mips_instruction)dec_insn.insn; + int bc_false = 0; + unsigned int fcr31; + unsigned int bit; + + switch (insn.mm_i_format.opcode) { + case mm_pool32a_op: + if ((insn.mm_i_format.simmediate & MM_POOL32A_MINOR_MASK) == + mm_pool32axf_op) { + switch (insn.mm_i_format.simmediate >> + MM_POOL32A_MINOR_SHIFT) { + case mm_jalr_op: + case mm_jalrhb_op: + case mm_jalrs_op: + case mm_jalrshb_op: + if (insn.mm_i_format.rt != 0) /* Not mm_jr */ + regs->regs[insn.mm_i_format.rt] = + regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + *contpc = regs->regs[insn.mm_i_format.rs]; + return 1; + break; + } + } + break; + case mm_pool32i_op: + switch (insn.mm_i_format.rt) { + case mm_bltzals_op: + case mm_bltzal_op: + regs->regs[31] = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + /* Fall through */ + case mm_bltz_op: + if ((long)regs->regs[insn.mm_i_format.rs] < 0) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.mm_i_format.simmediate << 1); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + return 1; + break; + case mm_bgezals_op: + case mm_bgezal_op: + regs->regs[31] = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + /* Fall through */ + case mm_bgez_op: + if ((long)regs->regs[insn.mm_i_format.rs] >= 0) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.mm_i_format.simmediate << 1); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + return 1; + break; + case mm_blez_op: + if ((long)regs->regs[insn.mm_i_format.rs] <= 0) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.mm_i_format.simmediate << 1); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + return 1; + break; + case mm_bgtz_op: + if ((long)regs->regs[insn.mm_i_format.rs] <= 0) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.mm_i_format.simmediate << 1); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + return 1; + break; + case mm_bc2f_op: + case mm_bc1f_op: + bc_false = 1; + /* Fall through */ + case mm_bc2t_op: + case mm_bc1t_op: + preempt_disable(); + if (is_fpu_owner()) + asm volatile("cfc1\t%0,$31" : "=r" (fcr31)); + else + fcr31 = current->thread.fpu.fcr31; + preempt_enable(); + + if (bc_false) + fcr31 = ~fcr31; + + bit = (insn.mm_i_format.rs >> 2); + bit += (bit != 0); + bit += 23; + if (fcr31 & (1 << bit)) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.mm_i_format.simmediate << 1); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + dec_insn.next_pc_inc; + return 1; + break; + } + break; + case mm_pool16c_op: + switch (insn.mm_i_format.rt) { + case mm_jalr16_op: + case mm_jalrs16_op: + regs->regs[31] = regs->cp0_epc + + dec_insn.pc_inc + dec_insn.next_pc_inc; + /* Fall through */ + case mm_jr16_op: + *contpc = regs->regs[insn.mm_i_format.rs]; + return 1; + break; + } + break; + case mm_beqz16_op: + if ((long)regs->regs[reg16to32map[insn.mm_b1_format.rs]] == 0) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.mm_b1_format.simmediate << 1); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + dec_insn.next_pc_inc; + return 1; + break; + case mm_bnez16_op: + if ((long)regs->regs[reg16to32map[insn.mm_b1_format.rs]] != 0) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.mm_b1_format.simmediate << 1); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + dec_insn.next_pc_inc; + return 1; + break; + case mm_b16_op: + *contpc = regs->cp0_epc + dec_insn.pc_inc + + (insn.mm_b0_format.simmediate << 1); + return 1; + break; + case mm_beq32_op: + if (regs->regs[insn.mm_i_format.rs] == + regs->regs[insn.mm_i_format.rt]) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.mm_i_format.simmediate << 1); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + return 1; + break; + case mm_bne32_op: + if (regs->regs[insn.mm_i_format.rs] != + regs->regs[insn.mm_i_format.rt]) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.mm_i_format.simmediate << 1); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + dec_insn.next_pc_inc; + return 1; + break; + case mm_jalx32_op: + regs->regs[31] = regs->cp0_epc + + dec_insn.pc_inc + dec_insn.next_pc_inc; + *contpc = regs->cp0_epc + dec_insn.pc_inc; + *contpc >>= 28; + *contpc <<= 28; + *contpc |= (insn.j_format.target << 2); + return 1; + break; + case mm_jals32_op: + case mm_jal32_op: + regs->regs[31] = regs->cp0_epc + + dec_insn.pc_inc + dec_insn.next_pc_inc; + /* Fall through */ + case mm_j32_op: + *contpc = regs->cp0_epc + dec_insn.pc_inc; + *contpc >>= 27; + *contpc <<= 27; + *contpc |= (insn.j_format.target << 1); + set_isa16_mode(*contpc); + return 1; + break; + } + return 0; +} /* * Redundant with logic already in kernel/branch.c, @@ -117,53 +673,177 @@ static const unsigned int fpucondbit[8] = { * a single subroutine should be used across both * modules. */ -static int isBranchInstr(mips_instruction * i) +static int isBranchInstr(struct pt_regs *regs, struct mm_decoded_insn dec_insn, + unsigned long *contpc) { - switch (MIPSInst_OPCODE(*i)) { + union mips_instruction insn = (union mips_instruction)dec_insn.insn; + unsigned int fcr31; + unsigned int bit = 0; + + switch (insn.i_format.opcode) { case spec_op: - switch (MIPSInst_FUNC(*i)) { + switch (insn.r_format.func) { case jalr_op: + regs->regs[insn.r_format.rd] = + regs->cp0_epc + dec_insn.pc_inc + + dec_insn.next_pc_inc; + /* Fall through */ case jr_op: + *contpc = regs->regs[insn.r_format.rs]; return 1; + break; } break; - case bcond_op: - switch (MIPSInst_RT(*i)) { + switch (insn.i_format.rt) { + case bltzal_op: + case bltzall_op: + regs->regs[31] = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + /* Fall through */ case bltz_op: - case bgez_op: case bltzl_op: - case bgezl_op: - case bltzal_op: + if ((long)regs->regs[insn.i_format.rs] < 0) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.i_format.simmediate << 2); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + return 1; + break; case bgezal_op: - case bltzall_op: case bgezall_op: + regs->regs[31] = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + /* Fall through */ + case bgez_op: + case bgezl_op: + if ((long)regs->regs[insn.i_format.rs] >= 0) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.i_format.simmediate << 2); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; return 1; + break; } break; - - case j_op: - case jal_op: case jalx_op: + set_isa16_mode(bit); + case jal_op: + regs->regs[31] = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + /* Fall through */ + case j_op: + *contpc = regs->cp0_epc + dec_insn.pc_inc; + *contpc >>= 28; + *contpc <<= 28; + *contpc |= (insn.j_format.target << 2); + /* Set microMIPS mode bit: XOR for jalx. */ + *contpc ^= bit; + return 1; + break; case beq_op: - case bne_op: - case blez_op: - case bgtz_op: case beql_op: + if (regs->regs[insn.i_format.rs] == + regs->regs[insn.i_format.rt]) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.i_format.simmediate << 2); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + return 1; + break; + case bne_op: case bnel_op: + if (regs->regs[insn.i_format.rs] != + regs->regs[insn.i_format.rt]) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.i_format.simmediate << 2); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + return 1; + break; + case blez_op: case blezl_op: + if ((long)regs->regs[insn.i_format.rs] <= 0) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.i_format.simmediate << 2); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + return 1; + break; + case bgtz_op: case bgtzl_op: + if ((long)regs->regs[insn.i_format.rs] > 0) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.i_format.simmediate << 2); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; return 1; - + break; case cop0_op: case cop1_op: case cop2_op: case cop1x_op: - if (MIPSInst_RS(*i) == bc_op) - return 1; + if (insn.i_format.rs == bc_op) { + preempt_disable(); + if (is_fpu_owner()) + asm volatile("cfc1\t%0,$31" : "=r" (fcr31)); + else + fcr31 = current->thread.fpu.fcr31; + preempt_enable(); + + bit = (insn.i_format.rt >> 2); + bit += (bit != 0); + bit += 23; + switch (insn.i_format.rt & 3) { + case 0: /* bc1f */ + case 2: /* bc1fl */ + if (~fcr31 & (1 << bit)) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.i_format.simmediate << 2); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + return 1; + break; + case 1: /* bc1t */ + case 3: /* bc1tl */ + if (fcr31 & (1 << bit)) + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + (insn.i_format.simmediate << 2); + else + *contpc = regs->cp0_epc + + dec_insn.pc_inc + + dec_insn.next_pc_inc; + return 1; + break; + } + } break; } - return 0; } @@ -210,26 +890,23 @@ static inline int cop1_64bit(struct pt_regs *xcp) */ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx, - void *__user *fault_addr) + struct mm_decoded_insn dec_insn, void *__user *fault_addr) { mips_instruction ir; - unsigned long emulpc, contpc; + unsigned long contpc = xcp->cp0_epc + dec_insn.pc_inc; unsigned int cond; - - if (!access_ok(VERIFY_READ, xcp->cp0_epc, sizeof(mips_instruction))) { - MIPS_FPU_EMU_INC_STATS(errors); - *fault_addr = (mips_instruction __user *)xcp->cp0_epc; - return SIGBUS; - } - if (__get_user(ir, (mips_instruction __user *) xcp->cp0_epc)) { - MIPS_FPU_EMU_INC_STATS(errors); - *fault_addr = (mips_instruction __user *)xcp->cp0_epc; - return SIGSEGV; - } + int pc_inc; /* XXX NEC Vr54xx bug workaround */ - if ((xcp->cp0_cause & CAUSEF_BD) && !isBranchInstr(&ir)) - xcp->cp0_cause &= ~CAUSEF_BD; + if (xcp->cp0_cause & CAUSEF_BD) { + if (dec_insn.micro_mips_mode) { + if (!mm_isBranchInstr(xcp, dec_insn, &contpc)) + xcp->cp0_cause &= ~CAUSEF_BD; + } else { + if (!isBranchInstr(xcp, dec_insn, &contpc)) + xcp->cp0_cause &= ~CAUSEF_BD; + } + } if (xcp->cp0_cause & CAUSEF_BD) { /* @@ -244,32 +921,33 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx, * Linux MIPS branch emulator operates on context, updating the * cp0_epc. */ - emulpc = xcp->cp0_epc + 4; /* Snapshot emulation target */ + ir = dec_insn.next_insn; /* process delay slot instr */ + pc_inc = dec_insn.next_pc_inc; + } else { + ir = dec_insn.insn; /* process current instr */ + pc_inc = dec_insn.pc_inc; + } - if (__compute_return_epc(xcp) < 0) { -#ifdef CP1DBG - printk("failed to emulate branch at %p\n", - (void *) (xcp->cp0_epc)); -#endif + /* + * Since microMIPS FPU instructios are a subset of MIPS32 FPU + * instructions, we want to convert microMIPS FPU instructions + * into MIPS32 instructions so that we could reuse all of the + * FPU emulation code. + * + * NOTE: We cannot do this for branch instructions since they + * are not a subset. Example: Cannot emulate a 16-bit + * aligned target address with a MIPS32 instruction. + */ + if (dec_insn.micro_mips_mode) { + /* + * If next instruction is a 16-bit instruction, then it + * it cannot be a FPU instruction. This could happen + * since we can be called for non-FPU instructions. + */ + if ((pc_inc == 2) || + (microMIPS32_to_MIPS32((union mips_instruction *)&ir) + == SIGILL)) return SIGILL; - } - if (!access_ok(VERIFY_READ, emulpc, sizeof(mips_instruction))) { - MIPS_FPU_EMU_INC_STATS(errors); - *fault_addr = (mips_instruction __user *)emulpc; - return SIGBUS; - } - if (__get_user(ir, (mips_instruction __user *) emulpc)) { - MIPS_FPU_EMU_INC_STATS(errors); - *fault_addr = (mips_instruction __user *)emulpc; - return SIGSEGV; - } - /* __compute_return_epc() will have updated cp0_epc */ - contpc = xcp->cp0_epc; - /* In order not to confuse ptrace() et al, tweak context */ - xcp->cp0_epc = emulpc - 4; - } else { - emulpc = xcp->cp0_epc; - contpc = xcp->cp0_epc + 4; } emul: @@ -474,22 +1152,35 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx, /* branch taken: emulate dslot * instruction */ - xcp->cp0_epc += 4; - contpc = (xcp->cp0_epc + - (MIPSInst_SIMM(ir) << 2)); - - if (!access_ok(VERIFY_READ, xcp->cp0_epc, - sizeof(mips_instruction))) { - MIPS_FPU_EMU_INC_STATS(errors); - *fault_addr = (mips_instruction __user *)xcp->cp0_epc; - return SIGBUS; - } - if (__get_user(ir, - (mips_instruction __user *) xcp->cp0_epc)) { - MIPS_FPU_EMU_INC_STATS(errors); - *fault_addr = (mips_instruction __user *)xcp->cp0_epc; - return SIGSEGV; - } + xcp->cp0_epc += dec_insn.pc_inc; + + contpc = MIPSInst_SIMM(ir); + ir = dec_insn.next_insn; + if (dec_insn.micro_mips_mode) { + contpc = (xcp->cp0_epc + (contpc << 1)); + + /* If 16-bit instruction, not FPU. */ + if ((dec_insn.next_pc_inc == 2) || + (microMIPS32_to_MIPS32((union mips_instruction *)&ir) == SIGILL)) { + + /* + * Since this instruction will + * be put on the stack with + * 32-bit words, get around + * this problem by putting a + * NOP16 as the second one. + */ + if (dec_insn.next_pc_inc == 2) + ir = (ir & (~0xffff)) | MM_NOP16; + + /* + * Single step the non-CP1 + * instruction in the dslot. + */ + return mips_dsemul(xcp, ir, contpc); + } + } else + contpc = (xcp->cp0_epc + (contpc << 2)); switch (MIPSInst_OPCODE(ir)) { case lwc1_op: @@ -525,8 +1216,8 @@ static int cop1Emulate(struct pt_regs *xcp, struct mips_fpu_struct *ctx, * branch likely nullifies * dslot if not taken */ - xcp->cp0_epc += 4; - contpc += 4; + xcp->cp0_epc += dec_insn.pc_inc; + contpc += dec_insn.pc_inc; /* * else continue & execute * dslot as normal insn @@ -1313,25 +2004,75 @@ int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx, int has_fpu, void *__user *fault_addr) { unsigned long oldepc, prevepc; - mips_instruction insn; + struct mm_decoded_insn dec_insn; + u16 instr[4]; + u16 *instr_ptr; int sig = 0; oldepc = xcp->cp0_epc; do { prevepc = xcp->cp0_epc; - if (!access_ok(VERIFY_READ, xcp->cp0_epc, sizeof(mips_instruction))) { - MIPS_FPU_EMU_INC_STATS(errors); - *fault_addr = (mips_instruction __user *)xcp->cp0_epc; - return SIGBUS; - } - if (__get_user(insn, (mips_instruction __user *) xcp->cp0_epc)) { - MIPS_FPU_EMU_INC_STATS(errors); - *fault_addr = (mips_instruction __user *)xcp->cp0_epc; - return SIGSEGV; + if (get_isa16_mode(prevepc) && cpu_has_mmips) { + /* + * Get next 2 microMIPS instructions and convert them + * into 32-bit instructions. + */ + if ((get_user(instr[0], (u16 __user *)msk_isa16_mode(xcp->cp0_epc))) || + (get_user(instr[1], (u16 __user *)msk_isa16_mode(xcp->cp0_epc + 2))) || + (get_user(instr[2], (u16 __user *)msk_isa16_mode(xcp->cp0_epc + 4))) || + (get_user(instr[3], (u16 __user *)msk_isa16_mode(xcp->cp0_epc + 6)))) { + MIPS_FPU_EMU_INC_STATS(errors); + return SIGBUS; + } + instr_ptr = instr; + + /* Get first instruction. */ + if (mm_insn_16bit(*instr_ptr)) { + /* Duplicate the half-word. */ + dec_insn.insn = (*instr_ptr << 16) | + (*instr_ptr); + /* 16-bit instruction. */ + dec_insn.pc_inc = 2; + instr_ptr += 1; + } else { + dec_insn.insn = (*instr_ptr << 16) | + *(instr_ptr+1); + /* 32-bit instruction. */ + dec_insn.pc_inc = 4; + instr_ptr += 2; + } + /* Get second instruction. */ + if (mm_insn_16bit(*instr_ptr)) { + /* Duplicate the half-word. */ + dec_insn.next_insn = (*instr_ptr << 16) | + (*instr_ptr); + /* 16-bit instruction. */ + dec_insn.next_pc_inc = 2; + } else { + dec_insn.next_insn = (*instr_ptr << 16) | + *(instr_ptr+1); + /* 32-bit instruction. */ + dec_insn.next_pc_inc = 4; + } + dec_insn.micro_mips_mode = 1; + } else { + if ((get_user(dec_insn.insn, + (mips_instruction __user *) xcp->cp0_epc)) || + (get_user(dec_insn.next_insn, + (mips_instruction __user *)(xcp->cp0_epc+4)))) { + MIPS_FPU_EMU_INC_STATS(errors); + return SIGBUS; + } + dec_insn.pc_inc = 4; + dec_insn.next_pc_inc = 4; + dec_insn.micro_mips_mode = 0; } - if (insn == 0) - xcp->cp0_epc += 4; /* skip nops */ + + if ((dec_insn.insn == 0) || + ((dec_insn.pc_inc == 2) && + ((dec_insn.insn & 0xffff) == MM_NOP16))) + xcp->cp0_epc += dec_insn.pc_inc; /* Skip NOPs */ else { /* * The 'ieee754_csr' is an alias of @@ -1341,7 +2082,7 @@ int fpu_emulator_cop1Handler(struct pt_regs *xcp, struct mips_fpu_struct *ctx, */ /* convert to ieee library modes */ ieee754_csr.rm = ieee_rm[ieee754_csr.rm]; - sig = cop1Emulate(xcp, ctx, fault_addr); + sig = cop1Emulate(xcp, ctx, dec_insn, fault_addr); /* revert to mips rounding mode */ ieee754_csr.rm = mips_rm[ieee754_csr.rm]; } diff --git a/arch/mips/math-emu/dsemul.c b/arch/mips/math-emu/dsemul.c index 384a3b0..7ea622a 100644 --- a/arch/mips/math-emu/dsemul.c +++ b/arch/mips/math-emu/dsemul.c @@ -55,7 +55,9 @@ int mips_dsemul(struct pt_regs *regs, mips_instruction ir, unsigned long cpc) struct emuframe __user *fr; int err; - if (ir == 0) { /* a nop is easy */ + if ((get_isa16_mode(regs->cp0_epc) && ((ir >> 16) == MM_NOP16)) || + (ir == 0)) { + /* NOP is easy */ regs->cp0_epc = cpc; regs->cp0_cause &= ~CAUSEF_BD; return 0; @@ -91,8 +93,16 @@ int mips_dsemul(struct pt_regs *regs, mips_instruction ir, unsigned long cpc) if (unlikely(!access_ok(VERIFY_WRITE, fr, sizeof(struct emuframe)))) return SIGBUS; - err = __put_user(ir, &fr->emul); - err |= __put_user((mips_instruction)BREAK_MATH, &fr->badinst); + if (get_isa16_mode(regs->cp0_epc)) { + err = __put_user(ir >> 16, (u16 __user *)(&fr->emul)); + err |= __put_user(ir & 0xffff, (u16 __user *)((long)(&fr->emul) + 2)); + err |= __put_user(BREAK_MATH >> 16, (u16 __user *)(&fr->badinst)); + err |= __put_user(BREAK_MATH & 0xffff, (u16 __user *)((long)(&fr->badinst) + 2)); + } else { + err = __put_user(ir, &fr->emul); + err |= __put_user((mips_instruction)BREAK_MATH, &fr->badinst); + } + err |= __put_user((mips_instruction)BD_COOKIE, &fr->cookie); err |= __put_user(cpc, &fr->epc); @@ -101,7 +111,8 @@ int mips_dsemul(struct pt_regs *regs, mips_instruction ir, unsigned long cpc) return SIGBUS; } - regs->cp0_epc = (unsigned long) &fr->emul; + regs->cp0_epc = ((unsigned long) &fr->emul) | + get_isa16_mode(regs->cp0_epc); flush_cache_sigtramp((unsigned long)&fr->badinst); @@ -114,9 +125,10 @@ int do_dsemulret(struct pt_regs *xcp) unsigned long epc; u32 insn, cookie; int err = 0; + u16 instr[2]; fr = (struct emuframe __user *) - (xcp->cp0_epc - sizeof(mips_instruction)); + (msk_isa16_mode(xcp->cp0_epc) - sizeof(mips_instruction)); /* * If we can't even access the area, something is very wrong, but we'll @@ -131,7 +143,13 @@ int do_dsemulret(struct pt_regs *xcp) * - Is the instruction pointed to by the EPC an BREAK_MATH? * - Is the following memory word the BD_COOKIE? */ - err = __get_user(insn, &fr->badinst); + if (get_isa16_mode(xcp->cp0_epc)) { + err = __get_user(instr[0], (u16 __user *)(&fr->badinst)); + err |= __get_user(instr[1], (u16 __user *)((long)(&fr->badinst) + 2)); + insn = (instr[0] << 16) | instr[1]; + } else { + err = __get_user(insn, &fr->badinst); + } err |= __get_user(cookie, &fr->cookie); if (unlikely(err || (insn != BREAK_MATH) || (cookie != BD_COOKIE))) { -- cgit v0.10.2 From 2a0b24f56c2492b932f1aed617ae80fb23500d21 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h index f64e17f..87e6207 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 c993840..a89d1b1 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 diff --git a/arch/mips/kernel/cpu-probe.c b/arch/mips/kernel/cpu-probe.c index 5fe66a0..4bbffdb 100644 --- a/arch/mips/kernel/cpu-probe.c +++ b/arch/mips/kernel/cpu-probe.c @@ -470,6 +470,9 @@ static inline unsigned int decode_config3(struct cpuinfo_mips *c) c->options |= MIPS_CPU_ULRI; if (config3 & MIPS_CONF3_ISA) c->options |= MIPS_CPU_MICROMIPS; +#ifdef CONFIG_CPU_MICROMIPS + write_c0_config3(read_c0_config3() | MIPS_CONF3_ISA_OE); +#endif if (config3 & MIPS_CONF3_VZ) c->ases |= MIPS_ASE_VZ; diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S index 5360b1d..5c2ba9f 100644 --- a/arch/mips/kernel/genex.S +++ b/arch/mips/kernel/genex.S @@ -5,8 +5,8 @@ * * Copyright (C) 1994 - 2000, 2001, 2003 Ralf Baechle * Copyright (C) 1999, 2000 Silicon Graphics, Inc. - * Copyright (C) 2001 MIPS Technologies, Inc. * Copyright (C) 2002, 2007 Maciej W. Rozycki + * Copyright (C) 2001, 2012 MIPS Technologies, Inc. All rights reserved. */ #include @@ -21,8 +21,10 @@ #include #include +#ifdef CONFIG_MIPS_MT_SMTC #define PANIC_PIC(msg) \ - .set push; \ + .set push; \ + .set nomicromips; \ .set reorder; \ PTR_LA a0,8f; \ .set noat; \ @@ -31,17 +33,10 @@ 9: b 9b; \ .set pop; \ TEXT(msg) +#endif __INIT -NESTED(except_vec0_generic, 0, sp) - PANIC_PIC("Exception vector 0 called") - END(except_vec0_generic) - -NESTED(except_vec1_generic, 0, sp) - PANIC_PIC("Exception vector 1 called") - END(except_vec1_generic) - /* * General exception vector for all other CPUs. * @@ -138,12 +133,19 @@ LEAF(r4k_wait) nop nop nop +#ifdef CONFIG_CPU_MICROMIPS + nop + nop + nop + nop +#endif .set mips3 wait /* end of rollback region (the region size must be power of two) */ - .set pop 1: jr ra + nop + .set pop END(r4k_wait) .macro BUILD_ROLLBACK_PROLOGUE handler @@ -201,7 +203,11 @@ NESTED(handle_int, PT_SIZE, sp) LONG_L s0, TI_REGS($28) LONG_S sp, TI_REGS($28) PTR_LA ra, ret_from_irq - j plat_irq_dispatch + PTR_LA v0, plat_irq_dispatch + jr v0 +#ifdef CONFIG_CPU_MICROMIPS + nop +#endif END(handle_int) __INIT @@ -222,11 +228,14 @@ NESTED(except_vec4, 0, sp) /* * EJTAG debug exception handler. * The EJTAG debug exception entry point is 0xbfc00480, which - * normally is in the boot PROM, so the boot PROM must do a + * normally is in the boot PROM, so the boot PROM must do an * unconditional jump to this vector. */ NESTED(except_vec_ejtag_debug, 0, sp) j ejtag_debug_handler +#ifdef CONFIG_CPU_MICROMIPS + nop +#endif END(except_vec_ejtag_debug) __FINIT @@ -251,9 +260,10 @@ NESTED(except_vec_vi, 0, sp) FEXPORT(except_vec_vi_mori) ori a0, $0, 0 #endif /* CONFIG_MIPS_MT_SMTC */ + PTR_LA v1, except_vec_vi_handler FEXPORT(except_vec_vi_lui) lui v0, 0 /* Patched */ - j except_vec_vi_handler + jr v1 FEXPORT(except_vec_vi_ori) ori v0, 0 /* Patched */ .set pop @@ -354,6 +364,9 @@ EXPORT(ejtag_debug_buffer) */ NESTED(except_vec_nmi, 0, sp) j nmi_handler +#ifdef CONFIG_CPU_MICROMIPS + nop +#endif END(except_vec_nmi) __FINIT @@ -500,13 +513,35 @@ NESTED(nmi_handler, PT_SIZE, sp) .set push .set noat .set noreorder - /* 0x7c03e83b: rdhwr v1,$29 */ + /* MIPS32: 0x7c03e83b: rdhwr v1,$29 */ + /* microMIPS: 0x007d6b3c: rdhwr v1,$29 */ MFC0 k1, CP0_EPC - lui k0, 0x7c03 - lw k1, (k1) - ori k0, 0xe83b - .set reorder +#if defined(CONFIG_CPU_MICROMIPS) || defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2) + and k0, k1, 1 + beqz k0, 1f + xor k1, k0 + lhu k0, (k1) + lhu k1, 2(k1) + ins k1, k0, 16, 16 + lui k0, 0x007d + b docheck + ori k0, 0x6b3c +1: + lui k0, 0x7c03 + lw k1, (k1) + ori k0, 0xe83b +#else + andi k0, k1, 1 + bnez k0, handle_ri + lui k0, 0x7c03 + lw k1, (k1) + ori k0, 0xe83b +#endif + .set reorder +docheck: bne k0, k1, handle_ri /* if not ours */ + +isrdhwr: /* The insn is rdhwr. No need to check CAUSE.BD here. */ get_saved_sp /* k1 := current_thread_info */ .set noreorder diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S index 9ea2964..9b36424 100644 --- a/arch/mips/kernel/scall32-o32.S +++ b/arch/mips/kernel/scall32-o32.S @@ -138,9 +138,18 @@ stackargs: 5: jr t1 sw t5, 16(sp) # argument #5 to ksp +#ifdef CONFIG_CPU_MICROMIPS sw t8, 28(sp) # argument #8 to ksp + nop sw t7, 24(sp) # argument #7 to ksp + nop sw t6, 20(sp) # argument #6 to ksp + nop +#else + sw t8, 28(sp) # argument #8 to ksp + sw t7, 24(sp) # argument #7 to ksp + sw t6, 20(sp) # argument #6 to ksp +#endif 6: j stack_done # go back nop .set pop diff --git a/arch/mips/kernel/smtc-asm.S b/arch/mips/kernel/smtc-asm.S index 76016ac..2866863 100644 --- a/arch/mips/kernel/smtc-asm.S +++ b/arch/mips/kernel/smtc-asm.S @@ -49,6 +49,9 @@ CAN WE PROVE THAT WE WON'T DO THIS IF INTS DISABLED?? .text .align 5 FEXPORT(__smtc_ipi_vector) +#ifdef CONFIG_CPU_MICROMIPS + nop +#endif .set noat /* Disable thread scheduling to make Status update atomic */ DMT 27 # dmt k1 diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 333782b..571a69c 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -8,8 +8,8 @@ * Copyright (C) 1998 Ulf Carlsson * Copyright (C) 1999 Silicon Graphics, Inc. * Kevin D. Kissell, kevink@mips.com and Carsten Langgaard, carstenl@mips.com - * Copyright (C) 2000, 01 MIPS Technologies, Inc. * Copyright (C) 2002, 2003, 2004, 2005, 2007 Maciej W. Rozycki + * Copyright (C) 2000, 2001, 2012 MIPS Technologies, Inc. All rights reserved. */ #include #include @@ -83,10 +83,6 @@ extern asmlinkage void handle_dsp(void); extern asmlinkage void handle_mcheck(void); extern asmlinkage void handle_reserved(void); -extern int fpu_emulator_cop1Handler(struct pt_regs *xcp, - struct mips_fpu_struct *ctx, int has_fpu, - void *__user *fault_addr); - void (*board_be_init)(void); int (*board_be_handler)(struct pt_regs *regs, int is_fixup); void (*board_nmi_handler_setup)(void); @@ -495,6 +491,12 @@ asmlinkage void do_be(struct pt_regs *regs) #define SYNC 0x0000000f #define RDHWR 0x0000003b +/* microMIPS definitions */ +#define MM_POOL32A_FUNC 0xfc00ffff +#define MM_RDHWR 0x00006b3c +#define MM_RS 0x001f0000 +#define MM_RT 0x03e00000 + /* * The ll_bit is cleared by r*_switch.S */ @@ -609,42 +611,62 @@ static int simulate_llsc(struct pt_regs *regs, unsigned int opcode) * Simulate trapping 'rdhwr' instructions to provide user accessible * registers not implemented in hardware. */ -static int simulate_rdhwr(struct pt_regs *regs, unsigned int opcode) +static int simulate_rdhwr(struct pt_regs *regs, int rd, int rt) { struct thread_info *ti = task_thread_info(current); + perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, + 1, regs, 0); + switch (rd) { + case 0: /* CPU number */ + regs->regs[rt] = smp_processor_id(); + return 0; + case 1: /* SYNCI length */ + regs->regs[rt] = min(current_cpu_data.dcache.linesz, + current_cpu_data.icache.linesz); + return 0; + case 2: /* Read count register */ + regs->regs[rt] = read_c0_count(); + return 0; + case 3: /* Count register resolution */ + switch (current_cpu_data.cputype) { + case CPU_20KC: + case CPU_25KF: + regs->regs[rt] = 1; + break; + default: + regs->regs[rt] = 2; + } + return 0; + case 29: + regs->regs[rt] = ti->tp_value; + return 0; + default: + return -1; + } +} + +static int simulate_rdhwr_normal(struct pt_regs *regs, unsigned int opcode) +{ if ((opcode & OPCODE) == SPEC3 && (opcode & FUNC) == RDHWR) { int rd = (opcode & RD) >> 11; int rt = (opcode & RT) >> 16; - perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, - 1, regs, 0); - switch (rd) { - case 0: /* CPU number */ - regs->regs[rt] = smp_processor_id(); - return 0; - case 1: /* SYNCI length */ - regs->regs[rt] = min(current_cpu_data.dcache.linesz, - current_cpu_data.icache.linesz); - return 0; - case 2: /* Read count register */ - regs->regs[rt] = read_c0_count(); - return 0; - case 3: /* Count register resolution */ - switch (current_cpu_data.cputype) { - case CPU_20KC: - case CPU_25KF: - regs->regs[rt] = 1; - break; - default: - regs->regs[rt] = 2; - } - return 0; - case 29: - regs->regs[rt] = ti->tp_value; - return 0; - default: - return -1; - } + + simulate_rdhwr(regs, rd, rt); + return 0; + } + + /* Not ours. */ + return -1; +} + +static int simulate_rdhwr_mm(struct pt_regs *regs, unsigned short opcode) +{ + if ((opcode & MM_POOL32A_FUNC) == MM_RDHWR) { + int rd = (opcode & MM_RS) >> 16; + int rt = (opcode & MM_RT) >> 21; + simulate_rdhwr(regs, rd, rt); + return 0; } /* Not ours. */ @@ -826,9 +848,29 @@ static void do_trap_or_bp(struct pt_regs *regs, unsigned int code, asmlinkage void do_bp(struct pt_regs *regs) { unsigned int opcode, bcode; - - if (__get_user(opcode, (unsigned int __user *) exception_epc(regs))) - goto out_sigsegv; + unsigned long epc; + u16 instr[2]; + + if (get_isa16_mode(regs->cp0_epc)) { + /* Calculate EPC. */ + epc = exception_epc(regs); + if (cpu_has_mmips) { + if ((__get_user(instr[0], (u16 __user *)msk_isa16_mode(epc)) || + (__get_user(instr[1], (u16 __user *)msk_isa16_mode(epc + 2))))) + goto out_sigsegv; + opcode = (instr[0] << 16) | instr[1]; + } else { + /* MIPS16e mode */ + if (__get_user(instr[0], (u16 __user *)msk_isa16_mode(epc))) + goto out_sigsegv; + bcode = (instr[0] >> 6) & 0x3f; + do_trap_or_bp(regs, bcode, "Break"); + return; + } + } else { + if (__get_user(opcode, (unsigned int __user *) exception_epc(regs))) + goto out_sigsegv; + } /* * There is the ancient bug in the MIPS assemblers that the break @@ -869,13 +911,22 @@ out_sigsegv: asmlinkage void do_tr(struct pt_regs *regs) { unsigned int opcode, tcode = 0; + u16 instr[2]; + unsigned long epc = exception_epc(regs); - if (__get_user(opcode, (unsigned int __user *) exception_epc(regs))) - goto out_sigsegv; + if ((__get_user(instr[0], (u16 __user *)msk_isa16_mode(epc))) || + (__get_user(instr[1], (u16 __user *)msk_isa16_mode(epc + 2)))) + goto out_sigsegv; + opcode = (instr[0] << 16) | instr[1]; /* Immediate versions don't provide a code. */ - if (!(opcode & OPCODE)) - tcode = ((opcode >> 6) & ((1 << 10) - 1)); + if (!(opcode & OPCODE)) { + if (get_isa16_mode(regs->cp0_epc)) + /* microMIPS */ + tcode = (opcode >> 12) & 0x1f; + else + tcode = ((opcode >> 6) & ((1 << 10) - 1)); + } do_trap_or_bp(regs, tcode, "Trap"); return; @@ -888,6 +939,7 @@ asmlinkage void do_ri(struct pt_regs *regs) { unsigned int __user *epc = (unsigned int __user *)exception_epc(regs); unsigned long old_epc = regs->cp0_epc; + unsigned long old31 = regs->regs[31]; unsigned int opcode = 0; int status = -1; @@ -900,23 +952,37 @@ asmlinkage void do_ri(struct pt_regs *regs) if (unlikely(compute_return_epc(regs) < 0)) return; - if (unlikely(get_user(opcode, epc) < 0)) - status = SIGSEGV; + if (get_isa16_mode(regs->cp0_epc)) { + unsigned short mmop[2] = { 0 }; - if (!cpu_has_llsc && status < 0) - status = simulate_llsc(regs, opcode); + if (unlikely(get_user(mmop[0], epc) < 0)) + status = SIGSEGV; + if (unlikely(get_user(mmop[1], epc) < 0)) + status = SIGSEGV; + opcode = (mmop[0] << 16) | mmop[1]; - if (status < 0) - status = simulate_rdhwr(regs, opcode); + if (status < 0) + status = simulate_rdhwr_mm(regs, opcode); + } else { + if (unlikely(get_user(opcode, epc) < 0)) + status = SIGSEGV; - if (status < 0) - status = simulate_sync(regs, opcode); + if (!cpu_has_llsc && status < 0) + status = simulate_llsc(regs, opcode); + + if (status < 0) + status = simulate_rdhwr_normal(regs, opcode); + + if (status < 0) + status = simulate_sync(regs, opcode); + } if (status < 0) status = SIGILL; if (unlikely(status > 0)) { regs->cp0_epc = old_epc; /* Undo skip-over. */ + regs->regs[31] = old31; force_sig(status, current); } } @@ -986,7 +1052,7 @@ static int default_cu2_call(struct notifier_block *nfb, unsigned long action, asmlinkage void do_cpu(struct pt_regs *regs) { unsigned int __user *epc; - unsigned long old_epc; + unsigned long old_epc, old31; unsigned int opcode; unsigned int cpid; int status; @@ -1000,26 +1066,41 @@ asmlinkage void do_cpu(struct pt_regs *regs) case 0: epc = (unsigned int __user *)exception_epc(regs); old_epc = regs->cp0_epc; + old31 = regs->regs[31]; opcode = 0; status = -1; if (unlikely(compute_return_epc(regs) < 0)) return; - if (unlikely(get_user(opcode, epc) < 0)) - status = SIGSEGV; + if (get_isa16_mode(regs->cp0_epc)) { + unsigned short mmop[2] = { 0 }; - if (!cpu_has_llsc && status < 0) - status = simulate_llsc(regs, opcode); + if (unlikely(get_user(mmop[0], epc) < 0)) + status = SIGSEGV; + if (unlikely(get_user(mmop[1], epc) < 0)) + status = SIGSEGV; + opcode = (mmop[0] << 16) | mmop[1]; - if (status < 0) - status = simulate_rdhwr(regs, opcode); + if (status < 0) + status = simulate_rdhwr_mm(regs, opcode); + } else { + if (unlikely(get_user(opcode, epc) < 0)) + status = SIGSEGV; + + if (!cpu_has_llsc && status < 0) + status = simulate_llsc(regs, opcode); + + if (status < 0) + status = simulate_rdhwr_normal(regs, opcode); + } if (status < 0) status = SIGILL; if (unlikely(status > 0)) { regs->cp0_epc = old_epc; /* Undo skip-over. */ + regs->regs[31] = old31; force_sig(status, current); } @@ -1333,7 +1414,7 @@ asmlinkage void cache_parity_error(void) void ejtag_exception_handler(struct pt_regs *regs) { const int field = 2 * sizeof(unsigned long); - unsigned long depc, old_epc; + unsigned long depc, old_epc, old_ra; unsigned int debug; printk(KERN_DEBUG "SDBBP EJTAG debug exception - not handled yet, just ignored!\n"); @@ -1348,10 +1429,12 @@ void ejtag_exception_handler(struct pt_regs *regs) * calculation. */ old_epc = regs->cp0_epc; + old_ra = regs->regs[31]; regs->cp0_epc = depc; - __compute_return_epc(regs); + compute_return_epc(regs); depc = regs->cp0_epc; regs->cp0_epc = old_epc; + regs->regs[31] = old_ra; } else depc += 4; write_c0_depc(depc); @@ -1392,9 +1475,24 @@ void __init *set_except_vector(int n, void *addr) unsigned long handler = (unsigned long) addr; unsigned long old_handler = exception_handlers[n]; +#ifdef CONFIG_CPU_MICROMIPS + /* + * Only the TLB handlers are cache aligned with an even + * address. All other handlers are on an odd address and + * require no modification. Otherwise, MIPS32 mode will + * be entered when handling any TLB exceptions. That + * would be bad...since we must stay in microMIPS mode. + */ + if (!(handler & 0x1)) + handler |= 1; +#endif exception_handlers[n] = handler; if (n == 0 && cpu_has_divec) { +#ifdef CONFIG_CPU_MICROMIPS + unsigned long jump_mask = ~((1 << 27) - 1); +#else unsigned long jump_mask = ~((1 << 28) - 1); +#endif u32 *buf = (u32 *)(ebase + 0x200); unsigned int k0 = 26; if ((handler & jump_mask) == ((ebase + 0x200) & jump_mask)) { @@ -1421,17 +1519,18 @@ static void *set_vi_srs_handler(int n, vi_handler_t addr, int srs) unsigned long handler; unsigned long old_handler = vi_handlers[n]; int srssets = current_cpu_data.srsets; - u32 *w; + u16 *h; unsigned char *b; BUG_ON(!cpu_has_veic && !cpu_has_vint); + BUG_ON((n < 0) && (n > 9)); if (addr == NULL) { handler = (unsigned long) do_default_vi; srs = 0; } else handler = (unsigned long) addr; - vi_handlers[n] = (unsigned long) addr; + vi_handlers[n] = handler; b = (unsigned char *)(ebase + 0x200 + n*VECTORSPACING); @@ -1450,9 +1549,8 @@ static void *set_vi_srs_handler(int n, vi_handler_t addr, int srs) if (srs == 0) { /* * If no shadow set is selected then use the default handler - * that does normal register saving and a standard interrupt exit + * that does normal register saving and standard interrupt exit */ - extern char except_vec_vi, except_vec_vi_lui; extern char except_vec_vi_ori, except_vec_vi_end; extern char rollback_except_vec_vi; @@ -1465,11 +1563,20 @@ static void *set_vi_srs_handler(int n, vi_handler_t addr, int srs) * Status.IM bit to be masked before going there. */ extern char except_vec_vi_mori; +#if defined(CONFIG_CPU_MICROMIPS) || defined(CONFIG_CPU_BIG_ENDIAN) + const int mori_offset = &except_vec_vi_mori - vec_start + 2; +#else const int mori_offset = &except_vec_vi_mori - vec_start; +#endif #endif /* CONFIG_MIPS_MT_SMTC */ - const int handler_len = &except_vec_vi_end - vec_start; +#if defined(CONFIG_CPU_MICROMIPS) || defined(CONFIG_CPU_BIG_ENDIAN) + const int lui_offset = &except_vec_vi_lui - vec_start + 2; + const int ori_offset = &except_vec_vi_ori - vec_start + 2; +#else const int lui_offset = &except_vec_vi_lui - vec_start; const int ori_offset = &except_vec_vi_ori - vec_start; +#endif + const int handler_len = &except_vec_vi_end - vec_start; if (handler_len > VECTORSPACING) { /* @@ -1479,30 +1586,44 @@ static void *set_vi_srs_handler(int n, vi_handler_t addr, int srs) panic("VECTORSPACING too small"); } - memcpy(b, vec_start, handler_len); + set_handler(((unsigned long)b - ebase), vec_start, +#ifdef CONFIG_CPU_MICROMIPS + (handler_len - 1)); +#else + handler_len); +#endif #ifdef CONFIG_MIPS_MT_SMTC BUG_ON(n > 7); /* Vector index %d exceeds SMTC maximum. */ - w = (u32 *)(b + mori_offset); - *w = (*w & 0xffff0000) | (0x100 << n); + h = (u16 *)(b + mori_offset); + *h = (0x100 << n); #endif /* CONFIG_MIPS_MT_SMTC */ - w = (u32 *)(b + lui_offset); - *w = (*w & 0xffff0000) | (((u32)handler >> 16) & 0xffff); - w = (u32 *)(b + ori_offset); - *w = (*w & 0xffff0000) | ((u32)handler & 0xffff); + h = (u16 *)(b + lui_offset); + *h = (handler >> 16) & 0xffff; + h = (u16 *)(b + ori_offset); + *h = (handler & 0xffff); local_flush_icache_range((unsigned long)b, (unsigned long)(b+handler_len)); } else { /* - * In other cases jump directly to the interrupt handler - * - * It is the handlers responsibility to save registers if required - * (eg hi/lo) and return from the exception using "eret" + * In other cases jump directly to the interrupt handler. It + * is the handler's responsibility to save registers if required + * (eg hi/lo) and return from the exception using "eret". */ - w = (u32 *)b; - *w++ = 0x08000000 | (((u32)handler >> 2) & 0x03fffff); /* j handler */ - *w = 0; + u32 insn; + + h = (u16 *)b; + /* j handler */ +#ifdef CONFIG_CPU_MICROMIPS + insn = 0xd4000000 | (((u32)handler & 0x07ffffff) >> 1); +#else + insn = 0x08000000 | (((u32)handler & 0x0fffffff) >> 2); +#endif + h[0] = (insn >> 16) & 0xffff; + h[1] = insn & 0xffff; + h[2] = 0; + h[3] = 0; local_flush_icache_range((unsigned long)b, (unsigned long)(b+8)); } @@ -1663,7 +1784,11 @@ void __cpuinit per_cpu_trap_init(bool is_boot_cpu) /* Install CPU exception handler */ void __cpuinit set_handler(unsigned long offset, void *addr, unsigned long size) { +#ifdef CONFIG_CPU_MICROMIPS + memcpy((void *)(ebase + offset), ((unsigned char *)addr - 1), size); +#else memcpy((void *)(ebase + offset), addr, size); +#endif local_flush_icache_range(ebase + offset, ebase + offset + size); } @@ -1697,8 +1822,9 @@ __setup("rdhwr_noopt", set_rdhwr_noopt); void __init trap_init(void) { - extern char except_vec3_generic, except_vec3_r4000; + extern char except_vec3_generic; extern char except_vec4; + extern char except_vec3_r4000; unsigned long i; int rollback; @@ -1831,11 +1957,11 @@ void __init trap_init(void) if (cpu_has_vce) /* Special exception: R4[04]00 uses also the divec space. */ - memcpy((void *)(ebase + 0x180), &except_vec3_r4000, 0x100); + set_handler(0x180, &except_vec3_r4000, 0x100); else if (cpu_has_4kex) - memcpy((void *)(ebase + 0x180), &except_vec3_generic, 0x80); + set_handler(0x180, &except_vec3_generic, 0x80); else - memcpy((void *)(ebase + 0x080), &except_vec3_generic, 0x80); + set_handler(0x080, &except_vec3_generic, 0x80); local_flush_icache_range(ebase, ebase + 0x400); flush_tlb_handlers(); diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c index fb4ca99..0a68f2a 100644 --- a/arch/mips/mm/tlbex.c +++ b/arch/mips/mm/tlbex.c @@ -2103,6 +2103,13 @@ static void __cpuinit build_r4000_tlb_load_handler(void) uasm_l_nopage_tlbl(&l, p); build_restore_work_registers(&p); +#ifdef CONFIG_CPU_MICROMIPS + if ((unsigned long)tlb_do_page_fault_0 & 1) { + uasm_i_lui(&p, K0, uasm_rel_hi((long)tlb_do_page_fault_0)); + uasm_i_addiu(&p, K0, K0, uasm_rel_lo((long)tlb_do_page_fault_0)); + uasm_i_jr(&p, K0); + } else +#endif uasm_i_j(&p, (unsigned long)tlb_do_page_fault_0 & 0x0fffffff); uasm_i_nop(&p); @@ -2150,6 +2157,13 @@ static void __cpuinit build_r4000_tlb_store_handler(void) uasm_l_nopage_tlbs(&l, p); build_restore_work_registers(&p); +#ifdef CONFIG_CPU_MICROMIPS + if ((unsigned long)tlb_do_page_fault_1 & 1) { + uasm_i_lui(&p, K0, uasm_rel_hi((long)tlb_do_page_fault_1)); + uasm_i_addiu(&p, K0, K0, uasm_rel_lo((long)tlb_do_page_fault_1)); + uasm_i_jr(&p, K0); + } else +#endif uasm_i_j(&p, (unsigned long)tlb_do_page_fault_1 & 0x0fffffff); uasm_i_nop(&p); @@ -2198,6 +2212,13 @@ static void __cpuinit build_r4000_tlb_modify_handler(void) uasm_l_nopage_tlbm(&l, p); build_restore_work_registers(&p); +#ifdef CONFIG_CPU_MICROMIPS + if ((unsigned long)tlb_do_page_fault_1 & 1) { + uasm_i_lui(&p, K0, uasm_rel_hi((long)tlb_do_page_fault_1)); + uasm_i_addiu(&p, K0, K0, uasm_rel_lo((long)tlb_do_page_fault_1)); + uasm_i_jr(&p, K0); + } else +#endif uasm_i_j(&p, (unsigned long)tlb_do_page_fault_1 & 0x0fffffff); uasm_i_nop(&p); diff --git a/arch/mips/mti-sead3/sead3-init.c b/arch/mips/mti-sead3/sead3-init.c index 562dccf..bfbd17b 100644 --- a/arch/mips/mti-sead3/sead3-init.c +++ b/arch/mips/mti-sead3/sead3-init.c @@ -65,7 +65,41 @@ static void __init mips_nmi_setup(void) base = cpu_has_veic ? (void *)(CAC_BASE + 0xa80) : (void *)(CAC_BASE + 0x380); +#ifdef CONFIG_CPU_MICROMIPS + /* + * Decrement the exception vector address by one for microMIPS. + */ + memcpy(base, (&except_vec_nmi - 1), 0x80); + + /* + * This is a hack. We do not know if the boot loader was built with + * microMIPS instructions or not. If it was not, the NMI exception + * code at 0x80000a80 will be taken in MIPS32 mode. The hand coded + * assembly below forces us into microMIPS mode if we are a pure + * microMIPS kernel. The assembly instructions are: + * + * 3C1A8000 lui k0,0x8000 + * 375A0381 ori k0,k0,0x381 + * 03400008 jr k0 + * 00000000 nop + * + * The mode switch occurs by jumping to the unaligned exception + * vector address at 0x80000381 which would have been 0x80000380 + * in MIPS32 mode. The jump to the unaligned address transitions + * us into microMIPS mode. + */ + if (!cpu_has_veic) { + void *base2 = (void *)(CAC_BASE + 0xa80); + *((unsigned int *)base2) = 0x3c1a8000; + *((unsigned int *)base2 + 1) = 0x375a0381; + *((unsigned int *)base2 + 2) = 0x03400008; + *((unsigned int *)base2 + 3) = 0x00000000; + flush_icache_range((unsigned long)base2, + (unsigned long)base2 + 0x10); + } +#else memcpy(base, &except_vec_nmi, 0x80); +#endif flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); } @@ -76,7 +110,21 @@ static void __init mips_ejtag_setup(void) base = cpu_has_veic ? (void *)(CAC_BASE + 0xa00) : (void *)(CAC_BASE + 0x300); +#ifdef CONFIG_CPU_MICROMIPS + /* Deja vu... */ + memcpy(base, (&except_vec_ejtag_debug - 1), 0x80); + if (!cpu_has_veic) { + void *base2 = (void *)(CAC_BASE + 0xa00); + *((unsigned int *)base2) = 0x3c1a8000; + *((unsigned int *)base2 + 1) = 0x375a0301; + *((unsigned int *)base2 + 2) = 0x03400008; + *((unsigned int *)base2 + 3) = 0x00000000; + flush_icache_range((unsigned long)base2, + (unsigned long)base2 + 0x10); + } +#else memcpy(base, &except_vec_ejtag_debug, 0x80); +#endif flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); } -- cgit v0.10.2 From fb6883e5809c08e43de23581759af4570ca91b0f Mon Sep 17 00:00:00 2001 From: Leonid Yegoshin 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 Signed-off-by: Steven J. Hill diff --git a/arch/mips/include/asm/branch.h b/arch/mips/include/asm/branch.h index 888766a..40bb9eb 100644 --- a/arch/mips/include/asm/branch.h +++ b/arch/mips/include/asm/branch.h @@ -11,6 +11,13 @@ #include #include +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; diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c index 83ffe95..a03836b 100644 --- a/arch/mips/kernel/branch.c +++ b/arch/mips/kernel/branch.c @@ -14,10 +14,93 @@ #include #include #include +#include #include #include #include +/* + * Calculate and return exception PC in case of branch delay + * slot for microMIPS. It does not clear the ISA mode bit. + */ +int __isa_exception_epc(struct pt_regs *regs) +{ + long epc = regs->cp0_epc; + unsigned short inst; + + /* Calculate exception PC in branch delay slot. */ + if (__get_user(inst, (u16 __user *) msk_isa16_mode(epc))) { + /* This should never happen because delay slot was checked. */ + force_sig(SIGSEGV, current); + return epc; + } + + if (mm_insn_16bit(inst)) + epc += 2; + else + epc += 4; + + return epc; +} + +/* + * Compute return address and emulate branch in microMIPS mode after an + * exception only. It does not handle compact branches/jumps and cannot + * be used in interrupt context. (Compact branches/jumps do not cause + * exceptions.) + */ +int __microMIPS_compute_return_epc(struct pt_regs *regs) +{ + u16 __user *pc16; + u16 halfword; + unsigned int word; + unsigned long contpc; + struct mm_decoded_insn mminsn = { 0 }; + + mminsn.micro_mips_mode = 1; + + /* This load never faults. */ + pc16 = (unsigned short __user *)msk_isa16_mode(regs->cp0_epc); + __get_user(halfword, pc16); + pc16++; + contpc = regs->cp0_epc + 2; + word = ((unsigned int)halfword << 16); + mminsn.pc_inc = 2; + + if (!mm_insn_16bit(halfword)) { + __get_user(halfword, pc16); + pc16++; + contpc = regs->cp0_epc + 4; + mminsn.pc_inc = 4; + word |= halfword; + } + mminsn.insn = word; + + if (get_user(halfword, pc16)) + goto sigsegv; + mminsn.next_pc_inc = 2; + word = ((unsigned int)halfword << 16); + + if (!mm_insn_16bit(halfword)) { + pc16++; + if (get_user(halfword, pc16)) + goto sigsegv; + mminsn.next_pc_inc = 4; + word |= halfword; + } + mminsn.next_insn = word; + + mm_isBranchInstr(regs, mminsn, &contpc); + + regs->cp0_epc = contpc; + + return 0; + +sigsegv: + force_sig(SIGSEGV, current); + return -EFAULT; +} + /** * __compute_return_epc_for_insn - Computes the return address and do emulate * branch simulation, if required. @@ -129,6 +212,8 @@ int __compute_return_epc_for_insn(struct pt_regs *regs, epc <<= 28; epc |= (insn.j_format.target << 2); regs->cp0_epc = epc; + if (insn.i_format.opcode == jalx_op) + set_isa16_mode(regs->cp0_epc); break; /* -- cgit v0.10.2 From 34c2f668d0f6b2ca1c076d8170d6cd4f2235a9d4 Mon Sep 17 00:00:00 2001 From: Leonid Yegoshin Date: Mon, 25 Mar 2013 13:18:07 -0500 Subject: MIPS: microMIPS: Add unaligned access support. Add logic needed to handle unaligned accesses in microMIPS mode. Signed-off-by: Steven J. Hill Signed-off-by: Leonid Yegoshin diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index 3be4405..ef53376 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -7,6 +7,7 @@ * Copyright (C) 2005, 2006 by Ralf Baechle (ralf@linux-mips.org) * Copyright (C) 1999, 2000 Silicon Graphics, Inc. * Copyright (C) 2004 Thiemo Seufer + * Copyright (C) 2013 Imagination Technologies Ltd. */ #include #include @@ -243,34 +244,115 @@ struct mips_frame_info { static inline int is_ra_save_ins(union mips_instruction *ip) { +#ifdef CONFIG_CPU_MICROMIPS + union mips_instruction mmi; + + /* + * swsp ra,offset + * swm16 reglist,offset(sp) + * swm32 reglist,offset(sp) + * sw32 ra,offset(sp) + * jradiussp - NOT SUPPORTED + * + * microMIPS is way more fun... + */ + if (mm_insn_16bit(ip->halfword[0])) { + mmi.word = (ip->halfword[0] << 16); + return ((mmi.mm16_r5_format.opcode == mm_swsp16_op && + mmi.mm16_r5_format.rt == 31) || + (mmi.mm16_m_format.opcode == mm_pool16c_op && + mmi.mm16_m_format.func == mm_swm16_op)); + } + else { + mmi.halfword[0] = ip->halfword[1]; + mmi.halfword[1] = ip->halfword[0]; + return ((mmi.mm_m_format.opcode == mm_pool32b_op && + mmi.mm_m_format.rd > 9 && + mmi.mm_m_format.base == 29 && + mmi.mm_m_format.func == mm_swm32_func) || + (mmi.i_format.opcode == mm_sw32_op && + mmi.i_format.rs == 29 && + mmi.i_format.rt == 31)); + } +#else /* sw / sd $ra, offset($sp) */ return (ip->i_format.opcode == sw_op || ip->i_format.opcode == sd_op) && ip->i_format.rs == 29 && ip->i_format.rt == 31; +#endif } static inline int is_jal_jalr_jr_ins(union mips_instruction *ip) { +#ifdef CONFIG_CPU_MICROMIPS + /* + * jr16,jrc,jalr16,jalr16 + * jal + * jalr/jr,jalr.hb/jr.hb,jalrs,jalrs.hb + * jraddiusp - NOT SUPPORTED + * + * microMIPS is kind of more fun... + */ + union mips_instruction mmi; + + mmi.word = (ip->halfword[0] << 16); + + if ((mmi.mm16_r5_format.opcode == mm_pool16c_op && + (mmi.mm16_r5_format.rt & mm_jr16_op) == mm_jr16_op) || + ip->j_format.opcode == mm_jal32_op) + return 1; + if (ip->r_format.opcode != mm_pool32a_op || + ip->r_format.func != mm_pool32axf_op) + return 0; + return (((ip->u_format.uimmediate >> 6) & mm_jalr_op) == mm_jalr_op); +#else if (ip->j_format.opcode == jal_op) return 1; if (ip->r_format.opcode != spec_op) return 0; return ip->r_format.func == jalr_op || ip->r_format.func == jr_op; +#endif } static inline int is_sp_move_ins(union mips_instruction *ip) { +#ifdef CONFIG_CPU_MICROMIPS + /* + * addiusp -imm + * addius5 sp,-imm + * addiu32 sp,sp,-imm + * jradiussp - NOT SUPPORTED + * + * microMIPS is not more fun... + */ + if (mm_insn_16bit(ip->halfword[0])) { + union mips_instruction mmi; + + mmi.word = (ip->halfword[0] << 16); + return ((mmi.mm16_r3_format.opcode == mm_pool16d_op && + mmi.mm16_r3_format.simmediate && mm_addiusp_func) || + (mmi.mm16_r5_format.opcode == mm_pool16d_op && + mmi.mm16_r5_format.rt == 29)); + } + return (ip->mm_i_format.opcode == mm_addiu32_op && + ip->mm_i_format.rt == 29 && ip->mm_i_format.rs == 29); +#else /* addiu/daddiu sp,sp,-imm */ if (ip->i_format.rs != 29 || ip->i_format.rt != 29) return 0; if (ip->i_format.opcode == addiu_op || ip->i_format.opcode == daddiu_op) return 1; +#endif return 0; } static int get_frame_info(struct mips_frame_info *info) { +#ifdef CONFIG_CPU_MICROMIPS + union mips_instruction *ip = (void *) (((char *) info->func) - 1); +#else union mips_instruction *ip = info->func; +#endif unsigned max_insns = info->func_size / sizeof(union mips_instruction); unsigned i; @@ -290,7 +372,26 @@ static int get_frame_info(struct mips_frame_info *info) break; if (!info->frame_size) { if (is_sp_move_ins(ip)) + { +#ifdef CONFIG_CPU_MICROMIPS + if (mm_insn_16bit(ip->halfword[0])) + { + unsigned short tmp; + + if (ip->halfword[0] & mm_addiusp_func) + { + tmp = (((ip->halfword[0] >> 1) & 0x1ff) << 2); + info->frame_size = -(signed short)(tmp | ((tmp & 0x100) ? 0xfe00 : 0)); + } else { + tmp = (ip->halfword[0] >> 1); + info->frame_size = -(signed short)(tmp & 0xf); + } + ip = (void *) &ip->halfword[1]; + ip--; + } else +#endif info->frame_size = - ip->i_format.simmediate; + } continue; } if (info->pc_offset == -1 && is_ra_save_ins(ip)) { diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c index f4c94ff..0213906 100644 --- a/arch/mips/kernel/unaligned.c +++ b/arch/mips/kernel/unaligned.c @@ -87,6 +87,8 @@ #include #include #include +#include +#include #define STR(x) __STR(x) #define __STR(x) #x @@ -104,14 +106,333 @@ static u32 unaligned_action; #endif extern void show_registers(struct pt_regs *regs); +#ifdef __BIG_ENDIAN +#define LoadHW(addr, value, res) \ + __asm__ __volatile__ (".set\tnoat\n" \ + "1:\tlb\t%0, 0(%2)\n" \ + "2:\tlbu\t$1, 1(%2)\n\t" \ + "sll\t%0, 0x8\n\t" \ + "or\t%0, $1\n\t" \ + "li\t%1, 0\n" \ + "3:\t.set\tat\n\t" \ + ".insn\n\t" \ + ".section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%1, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=&r" (value), "=r" (res) \ + : "r" (addr), "i" (-EFAULT)); + +#define LoadW(addr, value, res) \ + __asm__ __volatile__ ( \ + "1:\tlwl\t%0, (%2)\n" \ + "2:\tlwr\t%0, 3(%2)\n\t" \ + "li\t%1, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + ".section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%1, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=&r" (value), "=r" (res) \ + : "r" (addr), "i" (-EFAULT)); + +#define LoadHWU(addr, value, res) \ + __asm__ __volatile__ ( \ + ".set\tnoat\n" \ + "1:\tlbu\t%0, 0(%2)\n" \ + "2:\tlbu\t$1, 1(%2)\n\t" \ + "sll\t%0, 0x8\n\t" \ + "or\t%0, $1\n\t" \ + "li\t%1, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + ".set\tat\n\t" \ + ".section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%1, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=&r" (value), "=r" (res) \ + : "r" (addr), "i" (-EFAULT)); + +#define LoadWU(addr, value, res) \ + __asm__ __volatile__ ( \ + "1:\tlwl\t%0, (%2)\n" \ + "2:\tlwr\t%0, 3(%2)\n\t" \ + "dsll\t%0, %0, 32\n\t" \ + "dsrl\t%0, %0, 32\n\t" \ + "li\t%1, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + "\t.section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%1, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=&r" (value), "=r" (res) \ + : "r" (addr), "i" (-EFAULT)); + +#define LoadDW(addr, value, res) \ + __asm__ __volatile__ ( \ + "1:\tldl\t%0, (%2)\n" \ + "2:\tldr\t%0, 7(%2)\n\t" \ + "li\t%1, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + "\t.section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%1, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=&r" (value), "=r" (res) \ + : "r" (addr), "i" (-EFAULT)); + +#define StoreHW(addr, value, res) \ + __asm__ __volatile__ ( \ + ".set\tnoat\n" \ + "1:\tsb\t%1, 1(%2)\n\t" \ + "srl\t$1, %1, 0x8\n" \ + "2:\tsb\t$1, 0(%2)\n\t" \ + ".set\tat\n\t" \ + "li\t%0, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + ".section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%0, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=r" (res) \ + : "r" (value), "r" (addr), "i" (-EFAULT)); + +#define StoreW(addr, value, res) \ + __asm__ __volatile__ ( \ + "1:\tswl\t%1,(%2)\n" \ + "2:\tswr\t%1, 3(%2)\n\t" \ + "li\t%0, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + ".section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%0, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=r" (res) \ + : "r" (value), "r" (addr), "i" (-EFAULT)); + +#define StoreDW(addr, value, res) \ + __asm__ __volatile__ ( \ + "1:\tsdl\t%1,(%2)\n" \ + "2:\tsdr\t%1, 7(%2)\n\t" \ + "li\t%0, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + ".section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%0, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=r" (res) \ + : "r" (value), "r" (addr), "i" (-EFAULT)); +#endif + +#ifdef __LITTLE_ENDIAN +#define LoadHW(addr, value, res) \ + __asm__ __volatile__ (".set\tnoat\n" \ + "1:\tlb\t%0, 1(%2)\n" \ + "2:\tlbu\t$1, 0(%2)\n\t" \ + "sll\t%0, 0x8\n\t" \ + "or\t%0, $1\n\t" \ + "li\t%1, 0\n" \ + "3:\t.set\tat\n\t" \ + ".insn\n\t" \ + ".section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%1, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=&r" (value), "=r" (res) \ + : "r" (addr), "i" (-EFAULT)); + +#define LoadW(addr, value, res) \ + __asm__ __volatile__ ( \ + "1:\tlwl\t%0, 3(%2)\n" \ + "2:\tlwr\t%0, (%2)\n\t" \ + "li\t%1, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + ".section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%1, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=&r" (value), "=r" (res) \ + : "r" (addr), "i" (-EFAULT)); + +#define LoadHWU(addr, value, res) \ + __asm__ __volatile__ ( \ + ".set\tnoat\n" \ + "1:\tlbu\t%0, 1(%2)\n" \ + "2:\tlbu\t$1, 0(%2)\n\t" \ + "sll\t%0, 0x8\n\t" \ + "or\t%0, $1\n\t" \ + "li\t%1, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + ".set\tat\n\t" \ + ".section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%1, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=&r" (value), "=r" (res) \ + : "r" (addr), "i" (-EFAULT)); + +#define LoadWU(addr, value, res) \ + __asm__ __volatile__ ( \ + "1:\tlwl\t%0, 3(%2)\n" \ + "2:\tlwr\t%0, (%2)\n\t" \ + "dsll\t%0, %0, 32\n\t" \ + "dsrl\t%0, %0, 32\n\t" \ + "li\t%1, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + "\t.section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%1, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=&r" (value), "=r" (res) \ + : "r" (addr), "i" (-EFAULT)); + +#define LoadDW(addr, value, res) \ + __asm__ __volatile__ ( \ + "1:\tldl\t%0, 7(%2)\n" \ + "2:\tldr\t%0, (%2)\n\t" \ + "li\t%1, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + "\t.section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%1, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=&r" (value), "=r" (res) \ + : "r" (addr), "i" (-EFAULT)); + +#define StoreHW(addr, value, res) \ + __asm__ __volatile__ ( \ + ".set\tnoat\n" \ + "1:\tsb\t%1, 0(%2)\n\t" \ + "srl\t$1,%1, 0x8\n" \ + "2:\tsb\t$1, 1(%2)\n\t" \ + ".set\tat\n\t" \ + "li\t%0, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + ".section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%0, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=r" (res) \ + : "r" (value), "r" (addr), "i" (-EFAULT)); + +#define StoreW(addr, value, res) \ + __asm__ __volatile__ ( \ + "1:\tswl\t%1, 3(%2)\n" \ + "2:\tswr\t%1, (%2)\n\t" \ + "li\t%0, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + ".section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%0, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=r" (res) \ + : "r" (value), "r" (addr), "i" (-EFAULT)); + +#define StoreDW(addr, value, res) \ + __asm__ __volatile__ ( \ + "1:\tsdl\t%1, 7(%2)\n" \ + "2:\tsdr\t%1, (%2)\n\t" \ + "li\t%0, 0\n" \ + "3:\n\t" \ + ".insn\n\t" \ + ".section\t.fixup,\"ax\"\n\t" \ + "4:\tli\t%0, %3\n\t" \ + "j\t3b\n\t" \ + ".previous\n\t" \ + ".section\t__ex_table,\"a\"\n\t" \ + STR(PTR)"\t1b, 4b\n\t" \ + STR(PTR)"\t2b, 4b\n\t" \ + ".previous" \ + : "=r" (res) \ + : "r" (value), "r" (addr), "i" (-EFAULT)); +#endif + static void emulate_load_store_insn(struct pt_regs *regs, void __user *addr, unsigned int __user *pc) { union mips_instruction insn; unsigned long value; unsigned int res; + unsigned long origpc; + unsigned long orig31; void __user *fault_addr = NULL; + origpc = (unsigned long)pc; + orig31 = regs->regs[31]; + perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, 0); /* @@ -120,22 +441,22 @@ static void emulate_load_store_insn(struct pt_regs *regs, __get_user(insn.word, pc); switch (insn.i_format.opcode) { - /* - * These are instructions that a compiler doesn't generate. We - * can assume therefore that the code is MIPS-aware and - * really buggy. Emulating these instructions would break the - * semantics anyway. - */ + /* + * These are instructions that a compiler doesn't generate. We + * can assume therefore that the code is MIPS-aware and + * really buggy. Emulating these instructions would break the + * semantics anyway. + */ case ll_op: case lld_op: case sc_op: case scd_op: - /* - * For these instructions the only way to create an address - * error is an attempted access to kernel/supervisor address - * space. - */ + /* + * For these instructions the only way to create an address + * error is an attempted access to kernel/supervisor address + * space. + */ case ldl_op: case ldr_op: case lwl_op: @@ -149,36 +470,15 @@ static void emulate_load_store_insn(struct pt_regs *regs, case sb_op: goto sigbus; - /* - * The remaining opcodes are the ones that are really of interest. - */ + /* + * The remaining opcodes are the ones that are really of + * interest. + */ case lh_op: if (!access_ok(VERIFY_READ, addr, 2)) goto sigbus; - __asm__ __volatile__ (".set\tnoat\n" -#ifdef __BIG_ENDIAN - "1:\tlb\t%0, 0(%2)\n" - "2:\tlbu\t$1, 1(%2)\n\t" -#endif -#ifdef __LITTLE_ENDIAN - "1:\tlb\t%0, 1(%2)\n" - "2:\tlbu\t$1, 0(%2)\n\t" -#endif - "sll\t%0, 0x8\n\t" - "or\t%0, $1\n\t" - "li\t%1, 0\n" - "3:\t.set\tat\n\t" - ".section\t.fixup,\"ax\"\n\t" - "4:\tli\t%1, %3\n\t" - "j\t3b\n\t" - ".previous\n\t" - ".section\t__ex_table,\"a\"\n\t" - STR(PTR)"\t1b, 4b\n\t" - STR(PTR)"\t2b, 4b\n\t" - ".previous" - : "=&r" (value), "=r" (res) - : "r" (addr), "i" (-EFAULT)); + LoadHW(addr, value, res); if (res) goto fault; compute_return_epc(regs); @@ -189,26 +489,7 @@ static void emulate_load_store_insn(struct pt_regs *regs, if (!access_ok(VERIFY_READ, addr, 4)) goto sigbus; - __asm__ __volatile__ ( -#ifdef __BIG_ENDIAN - "1:\tlwl\t%0, (%2)\n" - "2:\tlwr\t%0, 3(%2)\n\t" -#endif -#ifdef __LITTLE_ENDIAN - "1:\tlwl\t%0, 3(%2)\n" - "2:\tlwr\t%0, (%2)\n\t" -#endif - "li\t%1, 0\n" - "3:\t.section\t.fixup,\"ax\"\n\t" - "4:\tli\t%1, %3\n\t" - "j\t3b\n\t" - ".previous\n\t" - ".section\t__ex_table,\"a\"\n\t" - STR(PTR)"\t1b, 4b\n\t" - STR(PTR)"\t2b, 4b\n\t" - ".previous" - : "=&r" (value), "=r" (res) - : "r" (addr), "i" (-EFAULT)); + LoadW(addr, value, res); if (res) goto fault; compute_return_epc(regs); @@ -219,30 +500,7 @@ static void emulate_load_store_insn(struct pt_regs *regs, if (!access_ok(VERIFY_READ, addr, 2)) goto sigbus; - __asm__ __volatile__ ( - ".set\tnoat\n" -#ifdef __BIG_ENDIAN - "1:\tlbu\t%0, 0(%2)\n" - "2:\tlbu\t$1, 1(%2)\n\t" -#endif -#ifdef __LITTLE_ENDIAN - "1:\tlbu\t%0, 1(%2)\n" - "2:\tlbu\t$1, 0(%2)\n\t" -#endif - "sll\t%0, 0x8\n\t" - "or\t%0, $1\n\t" - "li\t%1, 0\n" - "3:\t.set\tat\n\t" - ".section\t.fixup,\"ax\"\n\t" - "4:\tli\t%1, %3\n\t" - "j\t3b\n\t" - ".previous\n\t" - ".section\t__ex_table,\"a\"\n\t" - STR(PTR)"\t1b, 4b\n\t" - STR(PTR)"\t2b, 4b\n\t" - ".previous" - : "=&r" (value), "=r" (res) - : "r" (addr), "i" (-EFAULT)); + LoadHWU(addr, value, res); if (res) goto fault; compute_return_epc(regs); @@ -261,28 +519,7 @@ static void emulate_load_store_insn(struct pt_regs *regs, if (!access_ok(VERIFY_READ, addr, 4)) goto sigbus; - __asm__ __volatile__ ( -#ifdef __BIG_ENDIAN - "1:\tlwl\t%0, (%2)\n" - "2:\tlwr\t%0, 3(%2)\n\t" -#endif -#ifdef __LITTLE_ENDIAN - "1:\tlwl\t%0, 3(%2)\n" - "2:\tlwr\t%0, (%2)\n\t" -#endif - "dsll\t%0, %0, 32\n\t" - "dsrl\t%0, %0, 32\n\t" - "li\t%1, 0\n" - "3:\t.section\t.fixup,\"ax\"\n\t" - "4:\tli\t%1, %3\n\t" - "j\t3b\n\t" - ".previous\n\t" - ".section\t__ex_table,\"a\"\n\t" - STR(PTR)"\t1b, 4b\n\t" - STR(PTR)"\t2b, 4b\n\t" - ".previous" - : "=&r" (value), "=r" (res) - : "r" (addr), "i" (-EFAULT)); + LoadWU(addr, value, res); if (res) goto fault; compute_return_epc(regs); @@ -305,26 +542,7 @@ static void emulate_load_store_insn(struct pt_regs *regs, if (!access_ok(VERIFY_READ, addr, 8)) goto sigbus; - __asm__ __volatile__ ( -#ifdef __BIG_ENDIAN - "1:\tldl\t%0, (%2)\n" - "2:\tldr\t%0, 7(%2)\n\t" -#endif -#ifdef __LITTLE_ENDIAN - "1:\tldl\t%0, 7(%2)\n" - "2:\tldr\t%0, (%2)\n\t" -#endif - "li\t%1, 0\n" - "3:\t.section\t.fixup,\"ax\"\n\t" - "4:\tli\t%1, %3\n\t" - "j\t3b\n\t" - ".previous\n\t" - ".section\t__ex_table,\"a\"\n\t" - STR(PTR)"\t1b, 4b\n\t" - STR(PTR)"\t2b, 4b\n\t" - ".previous" - : "=&r" (value), "=r" (res) - : "r" (addr), "i" (-EFAULT)); + LoadDW(addr, value, res); if (res) goto fault; compute_return_epc(regs); @@ -339,68 +557,22 @@ static void emulate_load_store_insn(struct pt_regs *regs, if (!access_ok(VERIFY_WRITE, addr, 2)) goto sigbus; + compute_return_epc(regs); value = regs->regs[insn.i_format.rt]; - __asm__ __volatile__ ( -#ifdef __BIG_ENDIAN - ".set\tnoat\n" - "1:\tsb\t%1, 1(%2)\n\t" - "srl\t$1, %1, 0x8\n" - "2:\tsb\t$1, 0(%2)\n\t" - ".set\tat\n\t" -#endif -#ifdef __LITTLE_ENDIAN - ".set\tnoat\n" - "1:\tsb\t%1, 0(%2)\n\t" - "srl\t$1,%1, 0x8\n" - "2:\tsb\t$1, 1(%2)\n\t" - ".set\tat\n\t" -#endif - "li\t%0, 0\n" - "3:\n\t" - ".section\t.fixup,\"ax\"\n\t" - "4:\tli\t%0, %3\n\t" - "j\t3b\n\t" - ".previous\n\t" - ".section\t__ex_table,\"a\"\n\t" - STR(PTR)"\t1b, 4b\n\t" - STR(PTR)"\t2b, 4b\n\t" - ".previous" - : "=r" (res) - : "r" (value), "r" (addr), "i" (-EFAULT)); + StoreHW(addr, value, res); if (res) goto fault; - compute_return_epc(regs); break; case sw_op: if (!access_ok(VERIFY_WRITE, addr, 4)) goto sigbus; + compute_return_epc(regs); value = regs->regs[insn.i_format.rt]; - __asm__ __volatile__ ( -#ifdef __BIG_ENDIAN - "1:\tswl\t%1,(%2)\n" - "2:\tswr\t%1, 3(%2)\n\t" -#endif -#ifdef __LITTLE_ENDIAN - "1:\tswl\t%1, 3(%2)\n" - "2:\tswr\t%1, (%2)\n\t" -#endif - "li\t%0, 0\n" - "3:\n\t" - ".section\t.fixup,\"ax\"\n\t" - "4:\tli\t%0, %3\n\t" - "j\t3b\n\t" - ".previous\n\t" - ".section\t__ex_table,\"a\"\n\t" - STR(PTR)"\t1b, 4b\n\t" - STR(PTR)"\t2b, 4b\n\t" - ".previous" - : "=r" (res) - : "r" (value), "r" (addr), "i" (-EFAULT)); + StoreW(addr, value, res); if (res) goto fault; - compute_return_epc(regs); break; case sd_op: @@ -415,31 +587,11 @@ static void emulate_load_store_insn(struct pt_regs *regs, if (!access_ok(VERIFY_WRITE, addr, 8)) goto sigbus; + compute_return_epc(regs); value = regs->regs[insn.i_format.rt]; - __asm__ __volatile__ ( -#ifdef __BIG_ENDIAN - "1:\tsdl\t%1,(%2)\n" - "2:\tsdr\t%1, 7(%2)\n\t" -#endif -#ifdef __LITTLE_ENDIAN - "1:\tsdl\t%1, 7(%2)\n" - "2:\tsdr\t%1, (%2)\n\t" -#endif - "li\t%0, 0\n" - "3:\n\t" - ".section\t.fixup,\"ax\"\n\t" - "4:\tli\t%0, %3\n\t" - "j\t3b\n\t" - ".previous\n\t" - ".section\t__ex_table,\"a\"\n\t" - STR(PTR)"\t1b, 4b\n\t" - STR(PTR)"\t2b, 4b\n\t" - ".previous" - : "=r" (res) - : "r" (value), "r" (addr), "i" (-EFAULT)); + StoreDW(addr, value, res); if (res) goto fault; - compute_return_epc(regs); break; #endif /* CONFIG_64BIT */ @@ -502,6 +654,635 @@ static void emulate_load_store_insn(struct pt_regs *regs, return; fault: + /* roll back jump/branch */ + regs->cp0_epc = origpc; + regs->regs[31] = orig31; + /* Did we have an exception handler installed? */ + if (fixup_exception(regs)) + return; + + die_if_kernel("Unhandled kernel unaligned access", regs); + force_sig(SIGSEGV, current); + + return; + +sigbus: + die_if_kernel("Unhandled kernel unaligned access", regs); + force_sig(SIGBUS, current); + + return; + +sigill: + die_if_kernel + ("Unhandled kernel unaligned access or invalid instruction", regs); + force_sig(SIGILL, current); +} + +/* Recode table from 16-bit register notation to 32-bit GPR. */ +const int reg16to32[] = { 16, 17, 2, 3, 4, 5, 6, 7 }; + +/* Recode table from 16-bit STORE register notation to 32-bit GPR. */ +const int reg16to32st[] = { 0, 17, 2, 3, 4, 5, 6, 7 }; + +void emulate_load_store_microMIPS(struct pt_regs *regs, void __user * addr) +{ + unsigned long value; + unsigned int res; + int i; + unsigned int reg = 0, rvar; + unsigned long orig31; + u16 __user *pc16; + u16 halfword; + unsigned int word; + unsigned long origpc, contpc; + union mips_instruction insn; + struct mm_decoded_insn mminsn; + void __user *fault_addr = NULL; + + origpc = regs->cp0_epc; + orig31 = regs->regs[31]; + + mminsn.micro_mips_mode = 1; + + /* + * This load never faults. + */ + pc16 = (unsigned short __user *)msk_isa16_mode(regs->cp0_epc); + __get_user(halfword, pc16); + pc16++; + contpc = regs->cp0_epc + 2; + word = ((unsigned int)halfword << 16); + mminsn.pc_inc = 2; + + if (!mm_insn_16bit(halfword)) { + __get_user(halfword, pc16); + pc16++; + contpc = regs->cp0_epc + 4; + mminsn.pc_inc = 4; + word |= halfword; + } + mminsn.insn = word; + + if (get_user(halfword, pc16)) + goto fault; + mminsn.next_pc_inc = 2; + word = ((unsigned int)halfword << 16); + + if (!mm_insn_16bit(halfword)) { + pc16++; + if (get_user(halfword, pc16)) + goto fault; + mminsn.next_pc_inc = 4; + word |= halfword; + } + mminsn.next_insn = word; + + insn = (union mips_instruction)(mminsn.insn); + if (mm_isBranchInstr(regs, mminsn, &contpc)) + insn = (union mips_instruction)(mminsn.next_insn); + + /* Parse instruction to find what to do */ + + switch (insn.mm_i_format.opcode) { + + case mm_pool32a_op: + switch (insn.mm_x_format.func) { + case mm_lwxs_op: + reg = insn.mm_x_format.rd; + goto loadW; + } + + goto sigbus; + + case mm_pool32b_op: + switch (insn.mm_m_format.func) { + case mm_lwp_func: + reg = insn.mm_m_format.rd; + if (reg == 31) + goto sigbus; + + if (!access_ok(VERIFY_READ, addr, 8)) + goto sigbus; + + LoadW(addr, value, res); + if (res) + goto fault; + regs->regs[reg] = value; + addr += 4; + LoadW(addr, value, res); + if (res) + goto fault; + regs->regs[reg + 1] = value; + goto success; + + case mm_swp_func: + reg = insn.mm_m_format.rd; + if (reg == 31) + goto sigbus; + + if (!access_ok(VERIFY_WRITE, addr, 8)) + goto sigbus; + + value = regs->regs[reg]; + StoreW(addr, value, res); + if (res) + goto fault; + addr += 4; + value = regs->regs[reg + 1]; + StoreW(addr, value, res); + if (res) + goto fault; + goto success; + + case mm_ldp_func: +#ifdef CONFIG_64BIT + reg = insn.mm_m_format.rd; + if (reg == 31) + goto sigbus; + + if (!access_ok(VERIFY_READ, addr, 16)) + goto sigbus; + + LoadDW(addr, value, res); + if (res) + goto fault; + regs->regs[reg] = value; + addr += 8; + LoadDW(addr, value, res); + if (res) + goto fault; + regs->regs[reg + 1] = value; + goto success; +#endif /* CONFIG_64BIT */ + + goto sigill; + + case mm_sdp_func: +#ifdef CONFIG_64BIT + reg = insn.mm_m_format.rd; + if (reg == 31) + goto sigbus; + + if (!access_ok(VERIFY_WRITE, addr, 16)) + goto sigbus; + + value = regs->regs[reg]; + StoreDW(addr, value, res); + if (res) + goto fault; + addr += 8; + value = regs->regs[reg + 1]; + StoreDW(addr, value, res); + if (res) + goto fault; + goto success; +#endif /* CONFIG_64BIT */ + + goto sigill; + + case mm_lwm32_func: + reg = insn.mm_m_format.rd; + rvar = reg & 0xf; + if ((rvar > 9) || !reg) + goto sigill; + if (reg & 0x10) { + if (!access_ok + (VERIFY_READ, addr, 4 * (rvar + 1))) + goto sigbus; + } else { + if (!access_ok(VERIFY_READ, addr, 4 * rvar)) + goto sigbus; + } + if (rvar == 9) + rvar = 8; + for (i = 16; rvar; rvar--, i++) { + LoadW(addr, value, res); + if (res) + goto fault; + addr += 4; + regs->regs[i] = value; + } + if ((reg & 0xf) == 9) { + LoadW(addr, value, res); + if (res) + goto fault; + addr += 4; + regs->regs[30] = value; + } + if (reg & 0x10) { + LoadW(addr, value, res); + if (res) + goto fault; + regs->regs[31] = value; + } + goto success; + + case mm_swm32_func: + reg = insn.mm_m_format.rd; + rvar = reg & 0xf; + if ((rvar > 9) || !reg) + goto sigill; + if (reg & 0x10) { + if (!access_ok + (VERIFY_WRITE, addr, 4 * (rvar + 1))) + goto sigbus; + } else { + if (!access_ok(VERIFY_WRITE, addr, 4 * rvar)) + goto sigbus; + } + if (rvar == 9) + rvar = 8; + for (i = 16; rvar; rvar--, i++) { + value = regs->regs[i]; + StoreW(addr, value, res); + if (res) + goto fault; + addr += 4; + } + if ((reg & 0xf) == 9) { + value = regs->regs[30]; + StoreW(addr, value, res); + if (res) + goto fault; + addr += 4; + } + if (reg & 0x10) { + value = regs->regs[31]; + StoreW(addr, value, res); + if (res) + goto fault; + } + goto success; + + case mm_ldm_func: +#ifdef CONFIG_64BIT + reg = insn.mm_m_format.rd; + rvar = reg & 0xf; + if ((rvar > 9) || !reg) + goto sigill; + if (reg & 0x10) { + if (!access_ok + (VERIFY_READ, addr, 8 * (rvar + 1))) + goto sigbus; + } else { + if (!access_ok(VERIFY_READ, addr, 8 * rvar)) + goto sigbus; + } + if (rvar == 9) + rvar = 8; + + for (i = 16; rvar; rvar--, i++) { + LoadDW(addr, value, res); + if (res) + goto fault; + addr += 4; + regs->regs[i] = value; + } + if ((reg & 0xf) == 9) { + LoadDW(addr, value, res); + if (res) + goto fault; + addr += 8; + regs->regs[30] = value; + } + if (reg & 0x10) { + LoadDW(addr, value, res); + if (res) + goto fault; + regs->regs[31] = value; + } + goto success; +#endif /* CONFIG_64BIT */ + + goto sigill; + + case mm_sdm_func: +#ifdef CONFIG_64BIT + reg = insn.mm_m_format.rd; + rvar = reg & 0xf; + if ((rvar > 9) || !reg) + goto sigill; + if (reg & 0x10) { + if (!access_ok + (VERIFY_WRITE, addr, 8 * (rvar + 1))) + goto sigbus; + } else { + if (!access_ok(VERIFY_WRITE, addr, 8 * rvar)) + goto sigbus; + } + if (rvar == 9) + rvar = 8; + + for (i = 16; rvar; rvar--, i++) { + value = regs->regs[i]; + StoreDW(addr, value, res); + if (res) + goto fault; + addr += 8; + } + if ((reg & 0xf) == 9) { + value = regs->regs[30]; + StoreDW(addr, value, res); + if (res) + goto fault; + addr += 8; + } + if (reg & 0x10) { + value = regs->regs[31]; + StoreDW(addr, value, res); + if (res) + goto fault; + } + goto success; +#endif /* CONFIG_64BIT */ + + goto sigill; + + /* LWC2, SWC2, LDC2, SDC2 are not serviced */ + } + + goto sigbus; + + case mm_pool32c_op: + switch (insn.mm_m_format.func) { + case mm_lwu_func: + reg = insn.mm_m_format.rd; + goto loadWU; + } + + /* LL,SC,LLD,SCD are not serviced */ + goto sigbus; + + case mm_pool32f_op: + switch (insn.mm_x_format.func) { + case mm_lwxc1_func: + case mm_swxc1_func: + case mm_ldxc1_func: + case mm_sdxc1_func: + goto fpu_emul; + } + + goto sigbus; + + case mm_ldc132_op: + case mm_sdc132_op: + case mm_lwc132_op: + case mm_swc132_op: +fpu_emul: + /* roll back jump/branch */ + regs->cp0_epc = origpc; + regs->regs[31] = orig31; + + die_if_kernel("Unaligned FP access in kernel code", regs); + BUG_ON(!used_math()); + BUG_ON(!is_fpu_owner()); + + lose_fpu(1); /* save the FPU state for the emulator */ + res = fpu_emulator_cop1Handler(regs, ¤t->thread.fpu, 1, + &fault_addr); + own_fpu(1); /* restore FPU state */ + + /* If something went wrong, signal */ + process_fpemu_return(res, fault_addr); + + if (res == 0) + goto success; + return; + + case mm_lh32_op: + reg = insn.mm_i_format.rt; + goto loadHW; + + case mm_lhu32_op: + reg = insn.mm_i_format.rt; + goto loadHWU; + + case mm_lw32_op: + reg = insn.mm_i_format.rt; + goto loadW; + + case mm_sh32_op: + reg = insn.mm_i_format.rt; + goto storeHW; + + case mm_sw32_op: + reg = insn.mm_i_format.rt; + goto storeW; + + case mm_ld32_op: + reg = insn.mm_i_format.rt; + goto loadDW; + + case mm_sd32_op: + reg = insn.mm_i_format.rt; + goto storeDW; + + case mm_pool16c_op: + switch (insn.mm16_m_format.func) { + case mm_lwm16_op: + reg = insn.mm16_m_format.rlist; + rvar = reg + 1; + if (!access_ok(VERIFY_READ, addr, 4 * rvar)) + goto sigbus; + + for (i = 16; rvar; rvar--, i++) { + LoadW(addr, value, res); + if (res) + goto fault; + addr += 4; + regs->regs[i] = value; + } + LoadW(addr, value, res); + if (res) + goto fault; + regs->regs[31] = value; + + goto success; + + case mm_swm16_op: + reg = insn.mm16_m_format.rlist; + rvar = reg + 1; + if (!access_ok(VERIFY_WRITE, addr, 4 * rvar)) + goto sigbus; + + for (i = 16; rvar; rvar--, i++) { + value = regs->regs[i]; + StoreW(addr, value, res); + if (res) + goto fault; + addr += 4; + } + value = regs->regs[31]; + StoreW(addr, value, res); + if (res) + goto fault; + + goto success; + + } + + goto sigbus; + + case mm_lhu16_op: + reg = reg16to32[insn.mm16_rb_format.rt]; + goto loadHWU; + + case mm_lw16_op: + reg = reg16to32[insn.mm16_rb_format.rt]; + goto loadW; + + case mm_sh16_op: + reg = reg16to32st[insn.mm16_rb_format.rt]; + goto storeHW; + + case mm_sw16_op: + reg = reg16to32st[insn.mm16_rb_format.rt]; + goto storeW; + + case mm_lwsp16_op: + reg = insn.mm16_r5_format.rt; + goto loadW; + + case mm_swsp16_op: + reg = insn.mm16_r5_format.rt; + goto storeW; + + case mm_lwgp16_op: + reg = reg16to32[insn.mm16_r3_format.rt]; + goto loadW; + + default: + goto sigill; + } + +loadHW: + if (!access_ok(VERIFY_READ, addr, 2)) + goto sigbus; + + LoadHW(addr, value, res); + if (res) + goto fault; + regs->regs[reg] = value; + goto success; + +loadHWU: + if (!access_ok(VERIFY_READ, addr, 2)) + goto sigbus; + + LoadHWU(addr, value, res); + if (res) + goto fault; + regs->regs[reg] = value; + goto success; + +loadW: + if (!access_ok(VERIFY_READ, addr, 4)) + goto sigbus; + + LoadW(addr, value, res); + if (res) + goto fault; + regs->regs[reg] = value; + goto success; + +loadWU: +#ifdef CONFIG_64BIT + /* + * A 32-bit kernel might be running on a 64-bit processor. But + * if we're on a 32-bit processor and an i-cache incoherency + * or race makes us see a 64-bit instruction here the sdl/sdr + * would blow up, so for now we don't handle unaligned 64-bit + * instructions on 32-bit kernels. + */ + if (!access_ok(VERIFY_READ, addr, 4)) + goto sigbus; + + LoadWU(addr, value, res); + if (res) + goto fault; + regs->regs[reg] = value; + goto success; +#endif /* CONFIG_64BIT */ + + /* Cannot handle 64-bit instructions in 32-bit kernel */ + goto sigill; + +loadDW: +#ifdef CONFIG_64BIT + /* + * A 32-bit kernel might be running on a 64-bit processor. But + * if we're on a 32-bit processor and an i-cache incoherency + * or race makes us see a 64-bit instruction here the sdl/sdr + * would blow up, so for now we don't handle unaligned 64-bit + * instructions on 32-bit kernels. + */ + if (!access_ok(VERIFY_READ, addr, 8)) + goto sigbus; + + LoadDW(addr, value, res); + if (res) + goto fault; + regs->regs[reg] = value; + goto success; +#endif /* CONFIG_64BIT */ + + /* Cannot handle 64-bit instructions in 32-bit kernel */ + goto sigill; + +storeHW: + if (!access_ok(VERIFY_WRITE, addr, 2)) + goto sigbus; + + value = regs->regs[reg]; + StoreHW(addr, value, res); + if (res) + goto fault; + goto success; + +storeW: + if (!access_ok(VERIFY_WRITE, addr, 4)) + goto sigbus; + + value = regs->regs[reg]; + StoreW(addr, value, res); + if (res) + goto fault; + goto success; + +storeDW: +#ifdef CONFIG_64BIT + /* + * A 32-bit kernel might be running on a 64-bit processor. But + * if we're on a 32-bit processor and an i-cache incoherency + * or race makes us see a 64-bit instruction here the sdl/sdr + * would blow up, so for now we don't handle unaligned 64-bit + * instructions on 32-bit kernels. + */ + if (!access_ok(VERIFY_WRITE, addr, 8)) + goto sigbus; + + value = regs->regs[reg]; + StoreDW(addr, value, res); + if (res) + goto fault; + goto success; +#endif /* CONFIG_64BIT */ + + /* Cannot handle 64-bit instructions in 32-bit kernel */ + goto sigill; + +success: + regs->cp0_epc = contpc; /* advance or branch */ + +#ifdef CONFIG_DEBUG_FS + unaligned_instructions++; +#endif + return; + +fault: + /* roll back jump/branch */ + regs->cp0_epc = origpc; + regs->regs[31] = orig31; /* Did we have an exception handler installed? */ if (fixup_exception(regs)) return; @@ -518,7 +1299,8 @@ sigbus: return; sigill: - die_if_kernel("Unhandled kernel unaligned access or invalid instruction", regs); + die_if_kernel + ("Unhandled kernel unaligned access or invalid instruction", regs); force_sig(SIGILL, current); } @@ -531,23 +1313,51 @@ asmlinkage void do_ade(struct pt_regs *regs) 1, regs, regs->cp0_badvaddr); /* * Did we catch a fault trying to load an instruction? - * Or are we running in MIPS16 mode? */ - if ((regs->cp0_badvaddr == regs->cp0_epc) || (regs->cp0_epc & 0x1)) + if (regs->cp0_badvaddr == regs->cp0_epc) goto sigbus; - pc = (unsigned int __user *) exception_epc(regs); if (user_mode(regs) && !test_thread_flag(TIF_FIXADE)) goto sigbus; if (unaligned_action == UNALIGNED_ACTION_SIGNAL) goto sigbus; - else if (unaligned_action == UNALIGNED_ACTION_SHOW) - show_registers(regs); /* * Do branch emulation only if we didn't forward the exception. * This is all so but ugly ... */ + + /* + * Are we running in microMIPS mode? + */ + if (get_isa16_mode(regs->cp0_epc)) { + /* + * Did we catch a fault trying to load an instruction in + * 16-bit mode? + */ + if (regs->cp0_badvaddr == msk_isa16_mode(regs->cp0_epc)) + goto sigbus; + if (unaligned_action == UNALIGNED_ACTION_SHOW) + show_registers(regs); + + if (cpu_has_mmips) { + seg = get_fs(); + if (!user_mode(regs)) + set_fs(KERNEL_DS); + emulate_load_store_microMIPS(regs, + (void __user *)regs->cp0_badvaddr); + set_fs(seg); + + return; + } + + goto sigbus; + } + + if (unaligned_action == UNALIGNED_ACTION_SHOW) + show_registers(regs); + pc = (unsigned int __user *)exception_epc(regs); + seg = get_fs(); if (!user_mode(regs)) set_fs(KERNEL_DS); -- cgit v0.10.2 From 01be057b33f52f094bff3a79a93d9ca99e27483d Mon Sep 17 00:00:00 2001 From: Douglas Leung Date: Mon, 25 Mar 2013 13:21:11 -0500 Subject: MIPS: microMIPS: Add vdso support. Support vdso in microMIPS mode. Signed-off-by: Douglas Leung Signed-off-by: Steven J. Hill diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c index b5e88fd..fd3ef2c 100644 --- a/arch/mips/kernel/signal.c +++ b/arch/mips/kernel/signal.c @@ -35,6 +35,7 @@ #include #include #include +#include #include "signal-common.h" @@ -480,7 +481,15 @@ static void handle_signal(unsigned long sig, siginfo_t *info, sigset_t *oldset = sigmask_to_save(); int ret; struct mips_abi *abi = current->thread.abi; +#ifdef CONFIG_CPU_MICROMIPS + void *vdso; + unsigned int tmp = (unsigned int)current->mm->context.vdso; + + set_isa16_mode(tmp); + vdso = (void *)tmp; +#else void *vdso = current->mm->context.vdso; +#endif if (regs->regs[0]) { switch(regs->regs[2]) { -- cgit v0.10.2 From 1658f914ff91c3bf572d5ddae3773720f6803d20 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 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 193c091..bfbd703 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 bd87e36..1c9edd6 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, $0 \n" \ @@ -616,6 +624,7 @@ do { \ __asm__ __volatile__( \ "1: " insn " %z2, %3 # __put_user_unaligned_asm\n" \ "2: \n" \ + " .insn \n" \ " .section .fixup,\"ax\" \n" \ "3: li %0, %4 \n" \ " j 2b \n" \ @@ -634,6 +643,7 @@ do { \ "1: sw %2, (%3) # __put_user_unaligned_asm_ll32 \n" \ "2: sw %D2, 4(%3) \n" \ "3: \n" \ + " .insn \n" \ " .section .fixup,\"ax\" \n" \ "4: li %0, %4 \n" \ " j 3b \n" \ -- cgit v0.10.2 From bce860833ab1e40113eb0efab34d0c8f3b0226b1 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Mon, 25 Mar 2013 13:27:11 -0500 Subject: MIPS: microMIPS: Add configuration option for microMIPS kernel. This adds the option to build the Linux kernel using only the microMIPS ISA. The resulting kernel binary is, at a minimum, 20% smaller than using the MIPS32R2 ISA. Signed-off-by: Steven J. Hill diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 03de102..79bc56c 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -2041,6 +2041,13 @@ config CPU_HAS_SMARTMIPS you don't know you probably don't have SmartMIPS and should say N here. +config CPU_MICROMIPS + depends on SYS_SUPPORTS_MICROMIPS + bool "Build kernel using microMIPS ISA" + help + When this option is enabled the kernel will be built using the + microMIPS ISA + config CPU_HAS_WB bool diff --git a/arch/mips/Makefile b/arch/mips/Makefile index 6f7978f..dd58a04 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -114,6 +114,7 @@ cflags-$(CONFIG_CPU_BIG_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*e cflags-$(CONFIG_CPU_LITTLE_ENDIAN) += $(shell $(CC) -dumpmachine |grep -q 'mips.*el-.*' || echo -EL $(undef-all) $(predef-le)) cflags-$(CONFIG_CPU_HAS_SMARTMIPS) += $(call cc-option,-msmartmips) +cflags-$(CONFIG_CPU_MICROMIPS) += $(call cc-option,-mmicromips -mno-jals) cflags-$(CONFIG_SB1XXX_CORELIS) += $(call cc-option,-mno-sched-prolog) \ -fno-omit-frame-pointer diff --git a/arch/mips/configs/sead3_defconfig b/arch/mips/configs/sead3_defconfig index e3eec68..0abe681 100644 --- a/arch/mips/configs/sead3_defconfig +++ b/arch/mips/configs/sead3_defconfig @@ -2,7 +2,6 @@ CONFIG_MIPS_SEAD3=y CONFIG_CPU_LITTLE_ENDIAN=y CONFIG_CPU_MIPS32_R2=y CONFIG_HZ_100=y -CONFIG_EXPERIMENTAL=y CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y CONFIG_NO_HZ=y @@ -115,10 +114,8 @@ CONFIG_NLS_ISO8859_1=y CONFIG_NLS_ISO8859_15=y CONFIG_NLS_UTF8=y # CONFIG_FTRACE is not set -CONFIG_CRYPTO=y CONFIG_CRYPTO_CBC=y CONFIG_CRYPTO_ECB=y -CONFIG_CRYPTO_AES=y CONFIG_CRYPTO_ARC4=y # CONFIG_CRYPTO_ANSI_CPRNG is not set # CONFIG_CRYPTO_HW is not set diff --git a/arch/mips/configs/sead3micro_defconfig b/arch/mips/configs/sead3micro_defconfig new file mode 100644 index 0000000..2a0da5b --- /dev/null +++ b/arch/mips/configs/sead3micro_defconfig @@ -0,0 +1,122 @@ +CONFIG_MIPS_SEAD3=y +CONFIG_CPU_LITTLE_ENDIAN=y +CONFIG_CPU_MIPS32_R2=y +CONFIG_CPU_MICROMIPS=y +CONFIG_HZ_100=y +CONFIG_SYSVIPC=y +CONFIG_POSIX_MQUEUE=y +CONFIG_NO_HZ=y +CONFIG_HIGH_RES_TIMERS=y +CONFIG_IKCONFIG=y +CONFIG_IKCONFIG_PROC=y +CONFIG_LOG_BUF_SHIFT=15 +CONFIG_EMBEDDED=y +CONFIG_SLAB=y +CONFIG_PROFILING=y +CONFIG_OPROFILE=y +CONFIG_MODULES=y +# CONFIG_BLK_DEV_BSG is not set +# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set +CONFIG_NET=y +CONFIG_PACKET=y +CONFIG_UNIX=y +CONFIG_INET=y +CONFIG_IP_PNP=y +CONFIG_IP_PNP_DHCP=y +CONFIG_IP_PNP_BOOTP=y +# CONFIG_INET_XFRM_MODE_TRANSPORT is not set +# CONFIG_INET_XFRM_MODE_TUNNEL is not set +# CONFIG_INET_XFRM_MODE_BEET is not set +# CONFIG_INET_LRO is not set +# CONFIG_INET_DIAG is not set +# CONFIG_IPV6 is not set +# CONFIG_WIRELESS is not set +CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +CONFIG_MTD=y +CONFIG_MTD_CHAR=y +CONFIG_MTD_BLOCK=y +CONFIG_MTD_CFI=y +CONFIG_MTD_CFI_INTELEXT=y +CONFIG_MTD_PHYSMAP=y +CONFIG_MTD_UBI=y +CONFIG_MTD_UBI_GLUEBI=y +CONFIG_BLK_DEV_LOOP=y +CONFIG_BLK_DEV_CRYPTOLOOP=m +CONFIG_SCSI=y +# CONFIG_SCSI_PROC_FS is not set +CONFIG_BLK_DEV_SD=y +CONFIG_CHR_DEV_SG=y +# CONFIG_SCSI_LOWLEVEL is not set +CONFIG_NETDEVICES=y +CONFIG_SMSC911X=y +# CONFIG_NET_VENDOR_WIZNET is not set +CONFIG_MARVELL_PHY=y +CONFIG_DAVICOM_PHY=y +CONFIG_QSEMI_PHY=y +CONFIG_LXT_PHY=y +CONFIG_CICADA_PHY=y +CONFIG_VITESSE_PHY=y +CONFIG_SMSC_PHY=y +CONFIG_BROADCOM_PHY=y +CONFIG_ICPLUS_PHY=y +# CONFIG_WLAN is not set +# CONFIG_INPUT_MOUSEDEV is not set +# CONFIG_INPUT_KEYBOARD is not set +# CONFIG_INPUT_MOUSE is not set +# CONFIG_SERIO is not set +# CONFIG_CONSOLE_TRANSLATIONS is not set +CONFIG_VT_HW_CONSOLE_BINDING=y +CONFIG_LEGACY_PTY_COUNT=32 +CONFIG_SERIAL_8250=y +CONFIG_SERIAL_8250_CONSOLE=y +CONFIG_SERIAL_8250_NR_UARTS=2 +CONFIG_SERIAL_8250_RUNTIME_UARTS=2 +# CONFIG_HW_RANDOM is not set +CONFIG_I2C=y +# CONFIG_I2C_COMPAT is not set +CONFIG_I2C_CHARDEV=y +# CONFIG_I2C_HELPER_AUTO is not set +CONFIG_SPI=y +CONFIG_SENSORS_ADT7475=y +CONFIG_BACKLIGHT_LCD_SUPPORT=y +CONFIG_LCD_CLASS_DEVICE=y +CONFIG_BACKLIGHT_CLASS_DEVICE=y +# CONFIG_VGA_CONSOLE is not set +CONFIG_USB=y +CONFIG_USB_ANNOUNCE_NEW_DEVICES=y +CONFIG_USB_EHCI_HCD=y +CONFIG_USB_EHCI_ROOT_HUB_TT=y +CONFIG_USB_STORAGE=y +CONFIG_MMC=y +CONFIG_MMC_DEBUG=y +CONFIG_MMC_SPI=y +CONFIG_NEW_LEDS=y +CONFIG_LEDS_CLASS=y +CONFIG_LEDS_TRIGGERS=y +CONFIG_LEDS_TRIGGER_HEARTBEAT=y +CONFIG_RTC_CLASS=y +CONFIG_RTC_DRV_M41T80=y +CONFIG_EXT3_FS=y +# CONFIG_EXT3_DEFAULTS_TO_ORDERED is not set +CONFIG_XFS_FS=y +CONFIG_XFS_QUOTA=y +CONFIG_XFS_POSIX_ACL=y +CONFIG_QUOTA=y +# CONFIG_PRINT_QUOTA_WARNING is not set +CONFIG_MSDOS_FS=m +CONFIG_VFAT_FS=m +CONFIG_TMPFS=y +CONFIG_JFFS2_FS=y +CONFIG_NFS_FS=y +CONFIG_ROOT_NFS=y +CONFIG_NLS_CODEPAGE_437=y +CONFIG_NLS_ASCII=y +CONFIG_NLS_ISO8859_1=y +CONFIG_NLS_ISO8859_15=y +CONFIG_NLS_UTF8=y +# CONFIG_FTRACE is not set +CONFIG_CRYPTO_CBC=y +CONFIG_CRYPTO_ECB=y +CONFIG_CRYPTO_ARC4=y +# CONFIG_CRYPTO_ANSI_CPRNG is not set +# CONFIG_CRYPTO_HW is not set diff --git a/arch/mips/kernel/proc.c b/arch/mips/kernel/proc.c index 7a54f74..26b19da 100644 --- a/arch/mips/kernel/proc.c +++ b/arch/mips/kernel/proc.c @@ -99,6 +99,10 @@ static int show_cpuinfo(struct seq_file *m, void *v) if (cpu_has_vz) seq_printf(m, "%s", " vz"); seq_printf(m, "\n"); + if (cpu_has_mmips) { + seq_printf(m, "micromips kernel\t: %s\n", + (read_c0_config3() & MIPS_CONF3_ISA_OE) ? "yes" : "no"); + } seq_printf(m, "shadow register sets\t: %d\n", cpu_data[n].srsets); seq_printf(m, "kscratch registers\t: %d\n", -- cgit v0.10.2 From 26c5e07d1478021914801c8c7dd77c9268940e4f Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 diff --git a/arch/mips/include/asm/asm.h b/arch/mips/include/asm/asm.h index 164a21e..879691d 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 diff --git a/arch/mips/lib/memset.S b/arch/mips/lib/memset.S index 053d3b0..0580194 100644 --- a/arch/mips/lib/memset.S +++ b/arch/mips/lib/memset.S @@ -5,7 +5,8 @@ * * Copyright (C) 1998, 1999, 2000 by Ralf Baechle * Copyright (C) 1999, 2000 Silicon Graphics, Inc. - * Copyright (C) 2007 Maciej W. Rozycki + * Copyright (C) 2007 by Maciej W. Rozycki + * Copyright (C) 2011, 2012 MIPS Technologies, Inc. */ #include #include @@ -19,6 +20,20 @@ #define LONG_S_R sdr #endif +#ifdef CONFIG_CPU_MICROMIPS +#define STORSIZE (LONGSIZE * 2) +#define STORMASK (STORSIZE - 1) +#define FILL64RG t8 +#define FILLPTRG t7 +#undef LONG_S +#define LONG_S LONG_SP +#else +#define STORSIZE LONGSIZE +#define STORMASK LONGMASK +#define FILL64RG a1 +#define FILLPTRG t0 +#endif + #define EX(insn,reg,addr,handler) \ 9: insn reg, addr; \ .section __ex_table,"a"; \ @@ -26,23 +41,25 @@ .previous .macro f_fill64 dst, offset, val, fixup - EX(LONG_S, \val, (\offset + 0 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 1 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 2 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 3 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 4 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 5 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 6 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 7 * LONGSIZE)(\dst), \fixup) -#if LONGSIZE == 4 - EX(LONG_S, \val, (\offset + 8 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 9 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 10 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 11 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 12 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 13 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 14 * LONGSIZE)(\dst), \fixup) - EX(LONG_S, \val, (\offset + 15 * LONGSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 0 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 1 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 2 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 3 * STORSIZE)(\dst), \fixup) +#if ((defined(CONFIG_CPU_MICROMIPS) && (LONGSIZE == 4)) || !defined(CONFIG_CPU_MICROMIPS)) + EX(LONG_S, \val, (\offset + 4 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 5 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 6 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 7 * STORSIZE)(\dst), \fixup) +#endif +#if (!defined(CONFIG_CPU_MICROMIPS) && (LONGSIZE == 4)) + EX(LONG_S, \val, (\offset + 8 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 9 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 10 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 11 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 12 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 13 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 14 * STORSIZE)(\dst), \fixup) + EX(LONG_S, \val, (\offset + 15 * STORSIZE)(\dst), \fixup) #endif .endm @@ -71,16 +88,20 @@ LEAF(memset) 1: FEXPORT(__bzero) - sltiu t0, a2, LONGSIZE /* very small region? */ + sltiu t0, a2, STORSIZE /* very small region? */ bnez t0, .Lsmall_memset - andi t0, a0, LONGMASK /* aligned? */ + andi t0, a0, STORMASK /* aligned? */ +#ifdef CONFIG_CPU_MICROMIPS + move t8, a1 /* used by 'swp' instruction */ + move t9, a1 +#endif #ifndef CONFIG_CPU_DADDI_WORKAROUNDS beqz t0, 1f - PTR_SUBU t0, LONGSIZE /* alignment in bytes */ + PTR_SUBU t0, STORSIZE /* alignment in bytes */ #else .set noat - li AT, LONGSIZE + li AT, STORSIZE beqz t0, 1f PTR_SUBU t0, AT /* alignment in bytes */ .set at @@ -99,24 +120,27 @@ FEXPORT(__bzero) 1: ori t1, a2, 0x3f /* # of full blocks */ xori t1, 0x3f beqz t1, .Lmemset_partial /* no block to fill */ - andi t0, a2, 0x40-LONGSIZE + andi t0, a2, 0x40-STORSIZE PTR_ADDU t1, a0 /* end address */ .set reorder 1: PTR_ADDIU a0, 64 R10KCBARRIER(0(ra)) - f_fill64 a0, -64, a1, .Lfwd_fixup + f_fill64 a0, -64, FILL64RG, .Lfwd_fixup bne t1, a0, 1b .set noreorder .Lmemset_partial: R10KCBARRIER(0(ra)) PTR_LA t1, 2f /* where to start */ +#ifdef CONFIG_CPU_MICROMIPS + LONG_SRL t7, t0, 1 +#endif #if LONGSIZE == 4 - PTR_SUBU t1, t0 + PTR_SUBU t1, FILLPTRG #else .set noat - LONG_SRL AT, t0, 1 + LONG_SRL AT, FILLPTRG, 1 PTR_SUBU t1, AT .set at #endif @@ -126,9 +150,9 @@ FEXPORT(__bzero) .set push .set noreorder .set nomacro - f_fill64 a0, -64, a1, .Lpartial_fixup /* ... but first do longs ... */ + f_fill64 a0, -64, FILL64RG, .Lpartial_fixup /* ... but first do longs ... */ 2: .set pop - andi a2, LONGMASK /* At most one long to go */ + andi a2, STORMASK /* At most one long to go */ beqz a2, 1f PTR_ADDU a0, a2 /* What's left */ @@ -169,7 +193,7 @@ FEXPORT(__bzero) .Lpartial_fixup: PTR_L t0, TI_TASK($28) - andi a2, LONGMASK + andi a2, STORMASK LONG_L t0, THREAD_BUADDR(t0) LONG_ADDU a2, t1 jr ra @@ -177,4 +201,4 @@ FEXPORT(__bzero) .Llast_fixup: jr ra - andi v1, a2, LONGMASK + andi v1, a2, STORMASK -- cgit v0.10.2 From 0131f2b2c93bc8f0b0d9d599cf72d1df76ad3f01 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Mon, 25 Mar 2013 13:41:18 -0500 Subject: MIPS: microMIPS: Optimise 'strncpy' core library function. Optimise 'strncpy' 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 diff --git a/arch/mips/lib/strncpy_user.S b/arch/mips/lib/strncpy_user.S index bad5394..92870b6 100644 --- a/arch/mips/lib/strncpy_user.S +++ b/arch/mips/lib/strncpy_user.S @@ -3,7 +3,8 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (c) 1996, 1999 by Ralf Baechle + * Copyright (C) 1996, 1999 by Ralf Baechle + * Copyright (C) 2011 MIPS Technologies, Inc. */ #include #include @@ -33,26 +34,27 @@ LEAF(__strncpy_from_user_asm) bnez v0, .Lfault FEXPORT(__strncpy_from_user_nocheck_asm) - move v0, zero - move v1, a1 .set noreorder -1: EX(lbu, t0, (v1), .Lfault) + move t0, zero + move v1, a1 +1: EX(lbu, v0, (v1), .Lfault) PTR_ADDIU v1, 1 R10KCBARRIER(0(ra)) - beqz t0, 2f - sb t0, (a0) - PTR_ADDIU v0, 1 - .set reorder - PTR_ADDIU a0, 1 - bne v0, a2, 1b -2: PTR_ADDU t0, a1, v0 - xor t0, a1 - bltz t0, .Lfault + beqz v0, 2f + sb v0, (a0) + PTR_ADDIU t0, 1 + bne t0, a2, 1b + PTR_ADDIU a0, 1 +2: PTR_ADDU v0, a1, t0 + xor v0, a1 + bltz v0, .Lfault + nop jr ra # return n + move v0, t0 END(__strncpy_from_user_asm) -.Lfault: li v0, -EFAULT - jr ra +.Lfault: jr ra + li v0, -EFAULT .section __ex_table,"a" PTR 1b, .Lfault -- cgit v0.10.2 From b1bac3734581ab6788bbfe125c62914f8d6d5e01 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Mon, 25 Mar 2013 13:41:47 -0500 Subject: MIPS: microMIPS: Optimise 'strlen' core library function. Optimise 'strlen' 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 diff --git a/arch/mips/lib/strlen_user.S b/arch/mips/lib/strlen_user.S index fdbb970..e362dcd 100644 --- a/arch/mips/lib/strlen_user.S +++ b/arch/mips/lib/strlen_user.S @@ -3,8 +3,9 @@ * License. See the file "COPYING" in the main directory of this archive * for more details. * - * Copyright (c) 1996, 1998, 1999, 2004 by Ralf Baechle - * Copyright (c) 1999 Silicon Graphics, Inc. + * Copyright (C) 1996, 1998, 1999, 2004 by Ralf Baechle + * Copyright (C) 1999 Silicon Graphics, Inc. + * Copyright (C) 2011 MIPS Technologies, Inc. */ #include #include @@ -28,9 +29,9 @@ LEAF(__strlen_user_asm) FEXPORT(__strlen_user_nocheck_asm) move v0, a0 -1: EX(lb, t0, (v0), .Lfault) +1: EX(lbu, v1, (v0), .Lfault) PTR_ADDIU v0, 1 - bnez t0, 1b + bnez v1, 1b PTR_SUBU v0, a0 jr ra END(__strlen_user_asm) -- cgit v0.10.2 From 3e9f37e885f22e703ec6fe730eba4aebdb5dd5e0 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Mon, 25 Mar 2013 13:42:18 -0500 Subject: MIPS: microMIPS: Optimise 'strnlen' core library function. Optimise 'strnlen' 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 diff --git a/arch/mips/lib/strnlen_user.S b/arch/mips/lib/strnlen_user.S index beea03c..fcacea5 100644 --- a/arch/mips/lib/strnlen_user.S +++ b/arch/mips/lib/strnlen_user.S @@ -35,7 +35,7 @@ FEXPORT(__strnlen_user_nocheck_asm) PTR_ADDU a1, a0 # stop pointer 1: beq v0, a1, 1f # limit reached? EX(lb, t0, (v0), .Lfault) - PTR_ADDU v0, 1 + PTR_ADDIU v0, 1 bnez t0, 1b 1: PTR_SUBU v0, a0 jr ra -- cgit v0.10.2 From cd574704ec06904c7b7dd2c897fea5a54f944a95 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 diff --git a/arch/mips/include/uapi/asm/inst.h b/arch/mips/include/uapi/asm/inst.h index 23ec2f5..0f4aec2 100644 --- a/arch/mips/include/uapi/asm/inst.h +++ b/arch/mips/include/uapi/asm/inst.h @@ -424,6 +424,47 @@ enum mm_16d_minor_op { }; /* + * (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. */ #define MM_NOP16 0x0c00 @@ -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 v0.10.2 From 8508488fe7028b95bc86c7447c205fbc765cc4cf Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 diff --git a/arch/mips/include/asm/branch.h b/arch/mips/include/asm/branch.h index 40bb9eb..e28a3e0 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 b27091e..22912f7 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 */ diff --git a/arch/mips/kernel/branch.c b/arch/mips/kernel/branch.c index a03836b..46c2ad0 100644 --- a/arch/mips/kernel/branch.c +++ b/arch/mips/kernel/branch.c @@ -20,13 +20,13 @@ #include /* - * Calculate and return exception PC in case of branch delay - * slot for microMIPS. It does not clear the ISA mode bit. + * Calculate and return exception PC in case of branch delay slot + * for microMIPS and MIPS16e. It does not clear the ISA mode bit. */ int __isa_exception_epc(struct pt_regs *regs) { - long epc = regs->cp0_epc; unsigned short inst; + long epc = regs->cp0_epc; /* Calculate exception PC in branch delay slot. */ if (__get_user(inst, (u16 __user *) msk_isa16_mode(epc))) { @@ -34,8 +34,13 @@ int __isa_exception_epc(struct pt_regs *regs) force_sig(SIGSEGV, current); return epc; } - - if (mm_insn_16bit(inst)) + if (cpu_has_mips16) { + if (((union mips16e_instruction)inst).ri.opcode + == MIPS16e_jal_op) + epc += 4; + else + epc += 2; + } else if (mm_insn_16bit(inst)) epc += 2; else epc += 4; @@ -101,6 +106,94 @@ sigsegv: return -EFAULT; } +/* + * Compute return address and emulate branch in MIPS16e mode after an + * exception only. It does not handle compact branches/jumps and cannot + * be used in interrupt context. (Compact branches/jumps do not cause + * exceptions.) + */ +int __MIPS16e_compute_return_epc(struct pt_regs *regs) +{ + u16 __user *addr; + union mips16e_instruction inst; + u16 inst2; + u32 fullinst; + long epc; + + epc = regs->cp0_epc; + + /* Read the instruction. */ + addr = (u16 __user *)msk_isa16_mode(epc); + if (__get_user(inst.full, addr)) { + force_sig(SIGSEGV, current); + return -EFAULT; + } + + switch (inst.ri.opcode) { + case MIPS16e_extend_op: + regs->cp0_epc += 4; + return 0; + + /* + * JAL and JALX in MIPS16e mode + */ + case MIPS16e_jal_op: + addr += 1; + if (__get_user(inst2, addr)) { + force_sig(SIGSEGV, current); + return -EFAULT; + } + fullinst = ((unsigned)inst.full << 16) | inst2; + regs->regs[31] = epc + 6; + epc += 4; + epc >>= 28; + epc <<= 28; + /* + * JAL:5 X:1 TARGET[20-16]:5 TARGET[25:21]:5 TARGET[15:0]:16 + * + * ......TARGET[15:0].................TARGET[20:16]........... + * ......TARGET[25:21] + */ + epc |= + ((fullinst & 0xffff) << 2) | ((fullinst & 0x3e00000) >> 3) | + ((fullinst & 0x1f0000) << 7); + if (!inst.jal.x) + set_isa16_mode(epc); /* Set ISA mode bit. */ + regs->cp0_epc = epc; + return 0; + + /* + * J(AL)R(C) + */ + case MIPS16e_rr_op: + if (inst.rr.func == MIPS16e_jr_func) { + + if (inst.rr.ra) + regs->cp0_epc = regs->regs[31]; + else + regs->cp0_epc = + regs->regs[reg16to32[inst.rr.rx]]; + + if (inst.rr.l) { + if (inst.rr.nd) + regs->regs[31] = epc + 2; + else + regs->regs[31] = epc + 4; + } + return 0; + } + break; + } + + /* + * All other cases have no branch delay slot and are 16-bits. + * Branches do not cause an exception. + */ + regs->cp0_epc += 2; + + return 0; +} + /** * __compute_return_epc_for_insn - Computes the return address and do emulate * branch simulation, if required. -- cgit v0.10.2 From 451b001b05551a2bf9ec4c2293f20e34a4520701 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" Date: Mon, 25 Mar 2013 13:46:15 -0500 Subject: MIPS: MIPS16e: Add unaligned access support. Add logic needed to handle unaligned accesses in MIPS16e mode. Signed-off-by: Steven J. Hill Signed-off-by: Leonid Yegoshin diff --git a/arch/mips/kernel/unaligned.c b/arch/mips/kernel/unaligned.c index 0213906..203d885 100644 --- a/arch/mips/kernel/unaligned.c +++ b/arch/mips/kernel/unaligned.c @@ -1304,6 +1304,250 @@ sigill: force_sig(SIGILL, current); } +static void emulate_load_store_MIPS16e(struct pt_regs *regs, void __user * addr) +{ + unsigned long value; + unsigned int res; + int reg; + unsigned long orig31; + u16 __user *pc16; + unsigned long origpc; + union mips16e_instruction mips16inst, oldinst; + + origpc = regs->cp0_epc; + orig31 = regs->regs[31]; + pc16 = (unsigned short __user *)msk_isa16_mode(origpc); + /* + * This load never faults. + */ + __get_user(mips16inst.full, pc16); + oldinst = mips16inst; + + /* skip EXTEND instruction */ + if (mips16inst.ri.opcode == MIPS16e_extend_op) { + pc16++; + __get_user(mips16inst.full, pc16); + } else if (delay_slot(regs)) { + /* skip jump instructions */ + /* JAL/JALX are 32 bits but have OPCODE in first short int */ + if (mips16inst.ri.opcode == MIPS16e_jal_op) + pc16++; + pc16++; + if (get_user(mips16inst.full, pc16)) + goto sigbus; + } + + switch (mips16inst.ri.opcode) { + case MIPS16e_i64_op: /* I64 or RI64 instruction */ + switch (mips16inst.i64.func) { /* I64/RI64 func field check */ + case MIPS16e_ldpc_func: + case MIPS16e_ldsp_func: + reg = reg16to32[mips16inst.ri64.ry]; + goto loadDW; + + case MIPS16e_sdsp_func: + reg = reg16to32[mips16inst.ri64.ry]; + goto writeDW; + + case MIPS16e_sdrasp_func: + reg = 29; /* GPRSP */ + goto writeDW; + } + + goto sigbus; + + case MIPS16e_swsp_op: + case MIPS16e_lwpc_op: + case MIPS16e_lwsp_op: + reg = reg16to32[mips16inst.ri.rx]; + break; + + case MIPS16e_i8_op: + if (mips16inst.i8.func != MIPS16e_swrasp_func) + goto sigbus; + reg = 29; /* GPRSP */ + break; + + default: + reg = reg16to32[mips16inst.rri.ry]; + break; + } + + switch (mips16inst.ri.opcode) { + + case MIPS16e_lb_op: + case MIPS16e_lbu_op: + case MIPS16e_sb_op: + goto sigbus; + + case MIPS16e_lh_op: + if (!access_ok(VERIFY_READ, addr, 2)) + goto sigbus; + + LoadHW(addr, value, res); + if (res) + goto fault; + MIPS16e_compute_return_epc(regs, &oldinst); + regs->regs[reg] = value; + break; + + case MIPS16e_lhu_op: + if (!access_ok(VERIFY_READ, addr, 2)) + goto sigbus; + + LoadHWU(addr, value, res); + if (res) + goto fault; + MIPS16e_compute_return_epc(regs, &oldinst); + regs->regs[reg] = value; + break; + + case MIPS16e_lw_op: + case MIPS16e_lwpc_op: + case MIPS16e_lwsp_op: + if (!access_ok(VERIFY_READ, addr, 4)) + goto sigbus; + + LoadW(addr, value, res); + if (res) + goto fault; + MIPS16e_compute_return_epc(regs, &oldinst); + regs->regs[reg] = value; + break; + + case MIPS16e_lwu_op: +#ifdef CONFIG_64BIT + /* + * A 32-bit kernel might be running on a 64-bit processor. But + * if we're on a 32-bit processor and an i-cache incoherency + * or race makes us see a 64-bit instruction here the sdl/sdr + * would blow up, so for now we don't handle unaligned 64-bit + * instructions on 32-bit kernels. + */ + if (!access_ok(VERIFY_READ, addr, 4)) + goto sigbus; + + LoadWU(addr, value, res); + if (res) + goto fault; + MIPS16e_compute_return_epc(regs, &oldinst); + regs->regs[reg] = value; + break; +#endif /* CONFIG_64BIT */ + + /* Cannot handle 64-bit instructions in 32-bit kernel */ + goto sigill; + + case MIPS16e_ld_op: +loadDW: +#ifdef CONFIG_64BIT + /* + * A 32-bit kernel might be running on a 64-bit processor. But + * if we're on a 32-bit processor and an i-cache incoherency + * or race makes us see a 64-bit instruction here the sdl/sdr + * would blow up, so for now we don't handle unaligned 64-bit + * instructions on 32-bit kernels. + */ + if (!access_ok(VERIFY_READ, addr, 8)) + goto sigbus; + + LoadDW(addr, value, res); + if (res) + goto fault; + MIPS16e_compute_return_epc(regs, &oldinst); + regs->regs[reg] = value; + break; +#endif /* CONFIG_64BIT */ + + /* Cannot handle 64-bit instructions in 32-bit kernel */ + goto sigill; + + case MIPS16e_sh_op: + if (!access_ok(VERIFY_WRITE, addr, 2)) + goto sigbus; + + MIPS16e_compute_return_epc(regs, &oldinst); + value = regs->regs[reg]; + StoreHW(addr, value, res); + if (res) + goto fault; + break; + + case MIPS16e_sw_op: + case MIPS16e_swsp_op: + case MIPS16e_i8_op: /* actually - MIPS16e_swrasp_func */ + if (!access_ok(VERIFY_WRITE, addr, 4)) + goto sigbus; + + MIPS16e_compute_return_epc(regs, &oldinst); + value = regs->regs[reg]; + StoreW(addr, value, res); + if (res) + goto fault; + break; + + case MIPS16e_sd_op: +writeDW: +#ifdef CONFIG_64BIT + /* + * A 32-bit kernel might be running on a 64-bit processor. But + * if we're on a 32-bit processor and an i-cache incoherency + * or race makes us see a 64-bit instruction here the sdl/sdr + * would blow up, so for now we don't handle unaligned 64-bit + * instructions on 32-bit kernels. + */ + if (!access_ok(VERIFY_WRITE, addr, 8)) + goto sigbus; + + MIPS16e_compute_return_epc(regs, &oldinst); + value = regs->regs[reg]; + StoreDW(addr, value, res); + if (res) + goto fault; + break; +#endif /* CONFIG_64BIT */ + + /* Cannot handle 64-bit instructions in 32-bit kernel */ + goto sigill; + + default: + /* + * Pheeee... We encountered an yet unknown instruction or + * cache coherence problem. Die sucker, die ... + */ + goto sigill; + } + +#ifdef CONFIG_DEBUG_FS + unaligned_instructions++; +#endif + + return; + +fault: + /* roll back jump/branch */ + regs->cp0_epc = origpc; + regs->regs[31] = orig31; + /* Did we have an exception handler installed? */ + if (fixup_exception(regs)) + return; + + die_if_kernel("Unhandled kernel unaligned access", regs); + force_sig(SIGSEGV, current); + + return; + +sigbus: + die_if_kernel("Unhandled kernel unaligned access", regs); + force_sig(SIGBUS, current); + + return; + +sigill: + die_if_kernel + ("Unhandled kernel unaligned access or invalid instruction", regs); + force_sig(SIGILL, current); +} asmlinkage void do_ade(struct pt_regs *regs) { unsigned int __user *pc; @@ -1351,6 +1595,17 @@ asmlinkage void do_ade(struct pt_regs *regs) return; } + if (cpu_has_mips16) { + seg = get_fs(); + if (!user_mode(regs)) + set_fs(KERNEL_DS); + emulate_load_store_MIPS16e(regs, + (void __user *)regs->cp0_badvaddr); + set_fs(seg); + + return; + } + goto sigbus; } -- cgit v0.10.2 From ff86714fda0310ad153a2ba4836067f195e1f0b9 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h index bdc9786..a05f97d 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[]; diff --git a/arch/mips/kernel/irq-gic.c b/arch/mips/kernel/irq-gic.c index 485e6a9..130aec6 100644 --- a/arch/mips/kernel/irq-gic.c +++ b/arch/mips/kernel/irq-gic.c @@ -19,6 +19,7 @@ #include #include +unsigned int gic_present; unsigned long _gic_base; unsigned int gic_irq_base; unsigned int gic_irq_flags[GIC_NUM_INTRS]; diff --git a/arch/mips/kernel/smp-mt.c b/arch/mips/kernel/smp-mt.c index bfede06..3e5164c 100644 --- a/arch/mips/kernel/smp-mt.c +++ b/arch/mips/kernel/smp-mt.c @@ -34,6 +34,7 @@ #include #include #include +#include static void __init smvp_copy_vpe_config(void) { @@ -151,8 +152,6 @@ static void vsmp_send_ipi_mask(const struct cpumask *mask, unsigned int action) static void __cpuinit vsmp_init_secondary(void) { #ifdef CONFIG_IRQ_GIC - extern int gic_present; - /* This is Malta specific: IPI,performance and timer interrupts */ if (gic_present) change_c0_status(ST0_IM, STATUSF_IP3 | STATUSF_IP4 | diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c index e364af7..8e840c2 100644 --- a/arch/mips/mti-malta/malta-int.c +++ b/arch/mips/mti-malta/malta-int.c @@ -47,7 +47,6 @@ #include int gcmp_present = -1; -int gic_present; static unsigned long _msc01_biu_base; static unsigned long _gcmp_base; static unsigned int ipi_map[NR_CPUS]; diff --git a/arch/mips/mti-sead3/sead3-int.c b/arch/mips/mti-sead3/sead3-int.c index e26e082..6a560ac 100644 --- a/arch/mips/mti-sead3/sead3-int.c +++ b/arch/mips/mti-sead3/sead3-int.c @@ -20,7 +20,6 @@ #define SEAD_CONFIG_BASE 0x1b100110 #define SEAD_CONFIG_SIZE 4 -int gic_present; static unsigned long sead3_config_reg; /* -- cgit v0.10.2 From 28ea215186d365408756577e9e612ee334e26f8e Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h index a05f97d..f1a1e98 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[]; diff --git a/arch/mips/kernel/irq-gic.c b/arch/mips/kernel/irq-gic.c index 130aec6..eaf7c1e 100644 --- a/arch/mips/kernel/irq-gic.c +++ b/arch/mips/kernel/irq-gic.c @@ -19,6 +19,7 @@ #include #include +unsigned int gic_frequency; unsigned int gic_present; unsigned long _gic_base; unsigned int gic_irq_base; diff --git a/arch/mips/mti-malta/malta-time.c b/arch/mips/mti-malta/malta-time.c index 4dbdb2c..381ad06 100644 --- a/arch/mips/mti-malta/malta-time.c +++ b/arch/mips/mti-malta/malta-time.c @@ -42,7 +42,6 @@ #include unsigned long cpu_khz; -int gic_frequency; static int mips_cpu_timer_irq; static int mips_cpu_perf_irq; -- cgit v0.10.2 From dfa762e1c31c30607e4e5259f287dd3e174cbcc3 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 79bc56c..4b62305 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -337,6 +337,7 @@ config MIPS_SEAD3 select BOOT_RAW select CEVT_R4K select CSRC_R4K + select CSRC_GIC select CPU_MIPSR2_IRQ_VI select CPU_MIPSR2_IRQ_EI select DMA_NONCOHERENT diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h index f1a1e98..6aa68ff 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 +#include + 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); diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index de75fb5..bab8b16 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -23,11 +23,11 @@ obj-$(CONFIG_CEVT_GT641XX) += cevt-gt641xx.o obj-$(CONFIG_CEVT_SB1250) += cevt-sb1250.o obj-$(CONFIG_CEVT_TXX9) += cevt-txx9.o obj-$(CONFIG_CSRC_BCM1480) += csrc-bcm1480.o +obj-$(CONFIG_CSRC_GIC) += csrc-gic.o obj-$(CONFIG_CSRC_IOASIC) += csrc-ioasic.o obj-$(CONFIG_CSRC_POWERTV) += csrc-powertv.o obj-$(CONFIG_CSRC_R4K) += csrc-r4k.o obj-$(CONFIG_CSRC_SB1250) += csrc-sb1250.o -obj-$(CONFIG_CSRC_GIC) += csrc-gic.o obj-$(CONFIG_SYNC_R4K) += sync-r4k.o obj-$(CONFIG_STACKTRACE) += stacktrace.o diff --git a/arch/mips/kernel/csrc-gic.c b/arch/mips/kernel/csrc-gic.c index 5dca24b..e026209 100644 --- a/arch/mips/kernel/csrc-gic.c +++ b/arch/mips/kernel/csrc-gic.c @@ -5,23 +5,14 @@ * * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. */ -#include #include +#include -#include #include static cycle_t gic_hpt_read(struct clocksource *cs) { - unsigned int hi, hi2, lo; - - do { - GICREAD(GIC_REG(SHARED, GIC_SH_COUNTER_63_32), hi); - GICREAD(GIC_REG(SHARED, GIC_SH_COUNTER_31_00), lo); - GICREAD(GIC_REG(SHARED, GIC_SH_COUNTER_63_32), hi2); - } while (hi2 != hi); - - return (((cycle_t) hi) << 32) + lo; + return gic_read_count(); } static struct clocksource gic_clocksource = { diff --git a/arch/mips/kernel/irq-gic.c b/arch/mips/kernel/irq-gic.c index eaf7c1e..6a476e1 100644 --- a/arch/mips/kernel/irq-gic.c +++ b/arch/mips/kernel/irq-gic.c @@ -10,6 +10,7 @@ #include #include #include +#include #include #include @@ -32,6 +33,21 @@ static struct gic_pcpu_mask pcpu_masks[NR_CPUS]; static struct gic_pending_regs pending_regs[NR_CPUS]; static struct gic_intrmask_regs intrmask_regs[NR_CPUS]; +#ifdef CONFIG_CSRC_GIC +cycle_t gic_read_count(void) +{ + unsigned int hi, hi2, lo; + + do { + GICREAD(GIC_REG(SHARED, GIC_SH_COUNTER_63_32), hi); + GICREAD(GIC_REG(SHARED, GIC_SH_COUNTER_31_00), lo); + GICREAD(GIC_REG(SHARED, GIC_SH_COUNTER_63_32), hi2); + } while (hi2 != hi); + + return (((cycle_t) hi) << 32) + lo; +} +#endif + unsigned int gic_get_timer_pending(void) { unsigned int vpe_pending; diff --git a/arch/mips/mti-malta/malta-time.c b/arch/mips/mti-malta/malta-time.c index 381ad06..79e5169 100644 --- a/arch/mips/mti-malta/malta-time.c +++ b/arch/mips/mti-malta/malta-time.c @@ -71,7 +71,9 @@ static void __init estimate_frequencies(void) { unsigned long flags; unsigned int count, start; +#ifdef CONFIG_IRQ_GIC unsigned int giccount = 0, gicstart = 0; +#endif local_irq_save(flags); @@ -81,26 +83,32 @@ static void __init estimate_frequencies(void) /* Initialize counters. */ start = read_c0_count(); +#ifdef CONFIG_IRQ_GIC if (gic_present) GICREAD(GIC_REG(SHARED, GIC_SH_COUNTER_31_00), gicstart); +#endif /* Read counter exactly on falling edge of update flag. */ while (CMOS_READ(RTC_REG_A) & RTC_UIP); while (!(CMOS_READ(RTC_REG_A) & RTC_UIP)); count = read_c0_count(); +#ifdef CONFIG_IRQ_GIC if (gic_present) GICREAD(GIC_REG(SHARED, GIC_SH_COUNTER_31_00), giccount); +#endif local_irq_restore(flags); count -= start; - if (gic_present) - giccount -= gicstart; - mips_hpt_frequency = count; - if (gic_present) + +#ifdef CONFIG_IRQ_GIC + if (gic_present) { + giccount -= gicstart; gic_frequency = giccount; + } +#endif } void read_persistent_clock(struct timespec *ts) @@ -156,24 +164,27 @@ void __init plat_time_init(void) (prid != (PRID_COMP_MIPS | PRID_IMP_25KF))) freq *= 2; freq = freqround(freq, 5000); - pr_debug("CPU frequency %d.%02d MHz\n", freq/1000000, + printk("CPU frequency %d.%02d MHz\n", freq/1000000, (freq%1000000)*100/1000000); cpu_khz = freq / 1000; - if (gic_present) { - freq = freqround(gic_frequency, 5000); - pr_debug("GIC frequency %d.%02d MHz\n", freq/1000000, - (freq%1000000)*100/1000000); - gic_clocksource_init(gic_frequency); - } else - init_r4k_clocksource(); + mips_scroll_message(); #ifdef CONFIG_I8253 /* Only Malta has a PIT. */ setup_pit_timer(); #endif - mips_scroll_message(); +#ifdef CONFIG_IRQ_GIC + if (gic_present) { + freq = freqround(gic_frequency, 5000); + printk("GIC frequency %d.%02d MHz\n", freq/1000000, + (freq%1000000)*100/1000000); +#ifdef CONFIG_CSRC_GIC + gic_clocksource_init(gic_frequency); +#endif + } +#endif plat_perf_setup(); } -- cgit v0.10.2 From 2675fa7c7b46842f82b2766b5abe80e16ce32977 Mon Sep 17 00:00:00 2001 From: "Steven J. Hill" 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 diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h index 6aa68ff..398cf54 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 debc800..4784218 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) { diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c index 07b847d..0309aef 100644 --- a/arch/mips/kernel/cevt-r4k.c +++ b/arch/mips/kernel/cevt-r4k.c @@ -23,7 +23,6 @@ */ #ifndef CONFIG_MIPS_MT_SMTC - static int mips_next_event(unsigned long delta, struct clock_event_device *evt) { @@ -49,7 +48,6 @@ DEFINE_PER_CPU(struct clock_event_device, mips_clockevent_device); int cp0_timer_irq_installed; #ifndef CONFIG_MIPS_MT_SMTC - irqreturn_t c0_compare_interrupt(int irq, void *dev_id) { const int r2 = cpu_has_mips_r2; @@ -166,7 +164,6 @@ int c0_compare_int_usable(void) } #ifndef CONFIG_MIPS_MT_SMTC - int __cpuinit r4k_clockevent_init(void) { unsigned int cpu = smp_processor_id(); -- cgit v0.10.2 From 0ab2b7d08ea7226dc72ff0f8c05f470566facf7c Mon Sep 17 00:00:00 2001 From: Raghu Gandham 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 Signed-off-by: Steven J. Hill diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 4b62305..44e29b64 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -912,6 +912,9 @@ config CEVT_GT641XX config CEVT_R4K bool +config CEVT_GIC + bool + config CEVT_SB1250 bool @@ -1819,6 +1822,15 @@ config FORCE_MAX_ZONEORDER The page size is not necessarily 4KB. Keep this in mind when choosing a value for this option. +config CEVT_GIC + bool "Use GIC global counter for clock events" + depends on IRQ_GIC && !(MIPS_SEAD3 || MIPS_MT_SMTC) + help + Use the GIC global counter for the clock events. The R4K clock + event driver is always present, so if the platform ends up not + detecting a GIC, it will fall back to the R4K timer for the + generation of clock events. + config BOARD_SCACHE bool diff --git a/arch/mips/include/asm/gic.h b/arch/mips/include/asm/gic.h index 398cf54..7153b32 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 4784218..2d7b9df 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 diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index bab8b16..3d95062 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -19,6 +19,7 @@ obj-$(CONFIG_CEVT_BCM1480) += cevt-bcm1480.o obj-$(CONFIG_CEVT_R4K) += cevt-r4k.o obj-$(CONFIG_MIPS_MT_SMTC) += cevt-smtc.o obj-$(CONFIG_CEVT_DS1287) += cevt-ds1287.o +obj-$(CONFIG_CEVT_GIC) += cevt-gic.o obj-$(CONFIG_CEVT_GT641XX) += cevt-gt641xx.o obj-$(CONFIG_CEVT_SB1250) += cevt-sb1250.o obj-$(CONFIG_CEVT_TXX9) += cevt-txx9.o diff --git a/arch/mips/kernel/cevt-gic.c b/arch/mips/kernel/cevt-gic.c new file mode 100644 index 0000000..730eaf9 --- /dev/null +++ b/arch/mips/kernel/cevt-gic.c @@ -0,0 +1,104 @@ +/* + * 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) 2013 Imagination Technologies Ltd. + */ +#include +#include +#include +#include +#include + +#include +#include +#include + +DEFINE_PER_CPU(struct clock_event_device, gic_clockevent_device); +int gic_timer_irq_installed; + + +static int gic_next_event(unsigned long delta, struct clock_event_device *evt) +{ + u64 cnt; + int res; + + cnt = gic_read_count(); + cnt += (u64)delta; + gic_write_compare(cnt); + res = ((int)(gic_read_count() - cnt) >= 0) ? -ETIME : 0; + return res; +} + +void gic_set_clock_mode(enum clock_event_mode mode, + struct clock_event_device *evt) +{ + /* Nothing to do ... */ +} + +irqreturn_t gic_compare_interrupt(int irq, void *dev_id) +{ + struct clock_event_device *cd; + int cpu = smp_processor_id(); + + gic_write_compare(gic_read_compare()); + cd = &per_cpu(gic_clockevent_device, cpu); + cd->event_handler(cd); + return IRQ_HANDLED; +} + +struct irqaction gic_compare_irqaction = { + .handler = gic_compare_interrupt, + .flags = IRQF_PERCPU | IRQF_TIMER, + .name = "timer", +}; + + +void gic_event_handler(struct clock_event_device *dev) +{ +} + +int __cpuinit gic_clockevent_init(void) +{ + unsigned int cpu = smp_processor_id(); + struct clock_event_device *cd; + unsigned int irq; + + if (!cpu_has_counter || !gic_frequency) + return -ENXIO; + + irq = MIPS_GIC_IRQ_BASE; + + cd = &per_cpu(gic_clockevent_device, cpu); + + cd->name = "MIPS GIC"; + cd->features = CLOCK_EVT_FEAT_ONESHOT; + + clockevent_set_clock(cd, gic_frequency); + + /* Calculate the min / max delta */ + cd->max_delta_ns = clockevent_delta2ns(0x7fffffff, cd); + cd->min_delta_ns = clockevent_delta2ns(0x300, cd); + + cd->rating = 300; + cd->irq = irq; + cd->cpumask = cpumask_of(cpu); + cd->set_next_event = gic_next_event; + cd->set_mode = gic_set_clock_mode; + cd->event_handler = gic_event_handler; + + clockevents_register_device(cd); + + GICWRITE(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_MAP), 0x80000002); + GICWRITE(GIC_REG(VPE_LOCAL, GIC_VPE_SMASK), GIC_VPE_SMASK_CMP_MSK); + + if (gic_timer_irq_installed) + return 0; + + gic_timer_irq_installed = 1; + + setup_irq(irq, &gic_compare_irqaction); + irq_set_handler(irq, handle_percpu_irq); + return 0; +} diff --git a/arch/mips/kernel/cevt-r4k.c b/arch/mips/kernel/cevt-r4k.c index 0309aef..0613f46 100644 --- a/arch/mips/kernel/cevt-r4k.c +++ b/arch/mips/kernel/cevt-r4k.c @@ -72,6 +72,9 @@ irqreturn_t c0_compare_interrupt(int irq, void *dev_id) /* Clear Count/Compare Interrupt */ write_c0_compare(read_c0_compare()); cd = &per_cpu(mips_clockevent_device, cpu); +#ifdef CONFIG_CEVT_GIC + if (!gic_present) +#endif cd->event_handler(cd); } @@ -203,6 +206,9 @@ int __cpuinit r4k_clockevent_init(void) cd->set_mode = mips_set_clock_mode; cd->event_handler = mips_event_handler; +#ifdef CONFIG_CEVT_GIC + if (!gic_present) +#endif clockevents_register_device(cd); if (cp0_timer_irq_installed) diff --git a/arch/mips/kernel/irq-gic.c b/arch/mips/kernel/irq-gic.c index 6a476e1..c01b307 100644 --- a/arch/mips/kernel/irq-gic.c +++ b/arch/mips/kernel/irq-gic.c @@ -33,7 +33,7 @@ static struct gic_pcpu_mask pcpu_masks[NR_CPUS]; static struct gic_pending_regs pending_regs[NR_CPUS]; static struct gic_intrmask_regs intrmask_regs[NR_CPUS]; -#ifdef CONFIG_CSRC_GIC +#if defined(CONFIG_CSRC_GIC) || defined(CONFIG_CEVT_GIC) cycle_t gic_read_count(void) { unsigned int hi, hi2, lo; @@ -46,6 +46,24 @@ cycle_t gic_read_count(void) return (((cycle_t) hi) << 32) + lo; } + +void gic_write_compare(cycle_t cnt) +{ + GICWRITE(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_HI), + (int)(cnt >> 32)); + GICWRITE(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_LO), + (int)(cnt & 0xffffffff)); +} + +cycle_t gic_read_compare(void) +{ + unsigned int hi, lo; + + GICREAD(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_HI), hi); + GICREAD(GIC_REG(VPE_LOCAL, GIC_VPE_COMPARE_LO), lo); + + return (((cycle_t) hi) << 32) + lo; +} #endif unsigned int gic_get_timer_pending(void) @@ -134,6 +152,17 @@ static void __init vpe_local_setup(unsigned int numvpes) } } +unsigned int gic_compare_int(void) +{ + unsigned int pending; + + GICREAD(GIC_REG(VPE_LOCAL, GIC_VPE_PEND), pending); + if (pending & GIC_VPE_PEND_CMP_MSK) + return 1; + else + return 0; +} + unsigned int gic_get_int(void) { unsigned int i; diff --git a/arch/mips/mti-malta/malta-int.c b/arch/mips/mti-malta/malta-int.c index 8e840c2..0a1339a 100644 --- a/arch/mips/mti-malta/malta-int.c +++ b/arch/mips/mti-malta/malta-int.c @@ -133,6 +133,9 @@ static void malta_ipi_irqdispatch(void) { int irq; + if (gic_compare_int()) + do_IRQ(MIPS_GIC_IRQ_BASE); + irq = gic_get_int(); if (irq < 0) return; /* interrupt has already been cleared */ -- cgit v0.10.2