diff options
Diffstat (limited to 'src/core/arm/interpreter/mmu/xscale_copro.cpp')
| -rw-r--r-- | src/core/arm/interpreter/mmu/xscale_copro.cpp | 1391 |
1 files changed, 1391 insertions, 0 deletions
diff --git a/src/core/arm/interpreter/mmu/xscale_copro.cpp b/src/core/arm/interpreter/mmu/xscale_copro.cpp new file mode 100644 index 00000000..433ce8e0 --- /dev/null +++ b/src/core/arm/interpreter/mmu/xscale_copro.cpp @@ -0,0 +1,1391 @@ +/* + armmmu.c - Memory Management Unit emulation. + ARMulator extensions for the ARM7100 family. + Copyright (C) 1999 Ben Williamson + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that 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 +*/ + +#include <assert.h> +#include <string.h> + +#include "core/arm/interpreter/armdefs.h" +#include "core/arm/interpreter/armemu.h" + +/*#include "pxa.h" */ + +/* chy 2005-09-19 */ + +/* extern pxa270_io_t pxa270_io; */ +/* chy 2005-09-19 -----end */ + +typedef struct xscale_mmu_desc_s +{ + int i_tlb; + cache_desc_t i_cache; + + int d_tlb; + cache_desc_t main_d_cache; + cache_desc_t mini_d_cache; + //int rb; xscale has no read buffer + wb_desc_t wb; +} xscale_mmu_desc_t; + +static xscale_mmu_desc_t pxa_mmu_desc = { + 32, + {32, 32, 32, CACHE_WRITE_BACK}, + + 32, + {32, 32, 32, CACHE_WRITE_BACK}, + {32, 2, 8, CACHE_WRITE_BACK}, + {8, 16}, //for byte size, +}; + +//chy 2005-09-19 for cp6 +#define CR0_ICIP 0 +#define CR1_ICMR 1 +//chy 2005-09-19 ---end +//----------- for cp14----------------- +#define CCLKCFG 6 +#define PWRMODE 7 +typedef struct xscale_cp14_reg_s +{ + unsigned cclkcfg; //reg6 + unsigned pwrmode; //reg7 +} xscale_cp14_reg_s; + +xscale_cp14_reg_s pxa_cp14_regs; + +//-------------------------------------- + +static fault_t xscale_mmu_write (ARMul_State * state, ARMword va, + ARMword data, ARMword datatype); +static fault_t xscale_mmu_read (ARMul_State * state, ARMword va, + ARMword * data, ARMword datatype); + +ARMword xscale_mmu_mrc (ARMul_State * state, ARMword instr, ARMword * value); +ARMword xscale_mmu_mcr (ARMul_State * state, ARMword instr, ARMword value); + + +/* jeff add 2010.9.26 for pxa270 cp6*/ +#define PXA270_ICMR 0x40D00004 +#define PXA270_ICPR 0x40D00010 +#define PXA270_ICLR 0x40D00008 +//chy 2005-09-19 for xscale pxa27x cp6 +unsigned +xscale_cp6_mrc (ARMul_State * state, unsigned type, ARMword instr, + ARMword * data) +{ + unsigned opcode_2 = BITS (5, 7); + unsigned CRm = BITS (0, 3); + unsigned reg = BITS (16, 19); + unsigned result; + + //printf("SKYEYE: xscale_cp6_mrc:opcode_2 0x%x, CRm 0x%x, reg 0x%x,reg[15] 0x%x, instr %x\n",opcode_2,CRm,reg,state->Reg[15], instr); + + switch (reg) { + case CR0_ICIP: { // cp 6 reg 0 + //printf("cp6_mrc cr0 ICIP \n"); + /* *data = (pxa270_io.icmr & pxa270_io.icpr) & ~pxa270_io.iclr; */ + /* use bus_read get the pxa270 machine registers 2010.9.26 jeff*/ + int icmr, icpr, iclr; + bus_read(32, PXA270_ICMR, (uint32_t*)&icmr); + bus_read(32, PXA270_ICPR, (uint32_t*)&icpr); + bus_read(32, PXA270_ICLR, (uint32_t*)&iclr); + *data = (icmr & icpr) & ~iclr; + } + break; + case CR1_ICMR: { // cp 6 reg 1 + //printf("cp6_mrc cr1 ICMR\n"); + /* *data = pxa270_io.icmr; */ + int icmr; + /* use bus_read get the pxa270 machine registers 2010.9.26 jeff*/ + bus_read(32, PXA270_ICMR, (uint32_t*)&icmr); + *data = icmr; + } + break; + default: + *data = 0; + printf ("SKYEYE:cp6_mrc unknown cp6 regs!!!!!!\n"); + printf ("SKYEYE: xscale_cp6_mrc:opcode_2 0x%x, CRm 0x%x, reg 0x%x,reg[15] 0x%x, instr %x\n", opcode_2, CRm, reg, state->Reg[15], instr); + break; + } + return 0; +} + +//chy 2005-09-19 end +//xscale cp13 ---------------------------------------------------- +unsigned +xscale_cp13_init (ARMul_State * state) +{ + //printf("SKYEYE: xscale_cp13_init: begin\n"); + return 0; +} + +unsigned +xscale_cp13_exit (ARMul_State * state) +{ + //printf("SKYEYE: xscale_cp13_exit: begin\n"); + return 0; +} + +unsigned +xscale_cp13_ldc (ARMul_State * state, unsigned type, ARMword instr, + ARMword data) +{ + printf ("SKYEYE: xscale_cp13_ldc: ERROR isn't existed,"); + SKYEYE_OUTREGS (stderr); + fprintf (stderr, "\n"); + // skyeye_exit (-1); + return 0; //No matter return value, only for compiler. +} + +unsigned +xscale_cp13_stc (ARMul_State * state, unsigned type, ARMword instr, + ARMword * data) +{ + printf ("SKYEYE: xscale_cp13_stc: ERROR isn't existed,"); + SKYEYE_OUTREGS (stderr); + fprintf (stderr, "\n"); + // skyeye_exit (-1); + return 0; //No matter return value, only for compiler. +} + +unsigned +xscale_cp13_mrc (ARMul_State * state, unsigned type, ARMword instr, + ARMword * data) +{ + printf ("SKYEYE: xscale_cp13_mrc: ERROR isn't existed,"); + SKYEYE_OUTREGS (stderr); + fprintf (stderr, "\n"); + // skyeye_exit (-1); + return 0; //No matter return value, only for compiler. +} + +unsigned +xscale_cp13_mcr (ARMul_State * state, unsigned type, ARMword instr, + ARMword data) +{ + printf ("SKYEYE: xscale_cp13_mcr: ERROR isn't existed,"); + SKYEYE_OUTREGS (stderr); + fprintf (stderr, "\n"); + // skyeye_exit (-1); + return 0; //No matter return value, only for compiler. +} + +unsigned +xscale_cp13_cdp (ARMul_State * state, unsigned type, ARMword instr) +{ + printf ("SKYEYE: xscale_cp13_cdp: ERROR isn't existed,"); + SKYEYE_OUTREGS (stderr); + fprintf (stderr, "\n"); + // skyeye_exit (-1); + return 0; //No matter return value, only for compiler. +} + +unsigned +xscale_cp13_read_reg (ARMul_State * state, unsigned reg, ARMword * data) +{ + printf ("SKYEYE: xscale_cp13_read_reg: ERROR isn't existed,"); + SKYEYE_OUTREGS (stderr); + fprintf (stderr, "\n"); + return 0; + //exit(-1); +} + +unsigned +xscale_cp13_write_reg (ARMul_State * state, unsigned reg, ARMword data) +{ + printf ("SKYEYE: xscale_cp13_write_reg: ERROR isn't existed,"); + SKYEYE_OUTREGS (stderr); + fprintf (stderr, "\n"); + // skyeye_exit (-1); + return 0; //No matter return value, only for compiler. +} + +//------------------------------------------------------------------ +//xscale cp14 ---------------------------------------------------- +unsigned +xscale_cp14_init (ARMul_State * state) +{ + //printf("SKYEYE: xscale_cp14_init: begin\n"); + pxa_cp14_regs.cclkcfg = 0; + pxa_cp14_regs.pwrmode = 0; + return 0; +} + +unsigned +xscale_cp14_exit (ARMul_State * state) +{ + //printf("SKYEYE: xscale_cp14_exit: begin\n"); + return 0; +} + +unsigned +xscale_cp14_ldc (ARMul_State * state, unsigned type, ARMword instr, + ARMword data) +{ + printf ("SKYEYE: xscale_cp14_ldc: ERROR isn't existed, reg15 0x%x\n", + state->Reg[15]); + SKYEYE_OUTREGS (stderr); + // skyeye_exit (-1); + return 0; //No matter return value, only for compiler. +} + +unsigned +xscale_cp14_stc (ARMul_State * state, unsigned type, ARMword instr, + ARMword * data) +{ + printf ("SKYEYE: xscale_cp14_stc: ERROR isn't existed, reg15 0x%x\n", + state->Reg[15]); + SKYEYE_OUTREGS (stderr); + // skyeye_exit (-1); + return 0; //No matter return value, only for compiler. +} + +unsigned +xscale_cp14_mrc (ARMul_State * state, unsigned type, ARMword instr, + ARMword * data) +{ + unsigned opcode_2 = BITS (5, 7); + unsigned CRm = BITS (0, 3); + unsigned reg = BITS (16, 19); + unsigned result; + + //printf("SKYEYE: xscale_cp14_mrc:opcode_2 0x%x, CRm 0x%x, reg 0x%x,reg[15] 0x%x, instr %x\n",opcode_2,CRm,reg,\ + state->Reg[15], instr); + + switch (reg) { + case CCLKCFG: // cp 14 reg 6 + //printf("cp14_mrc cclkcfg \n"); + *data = pxa_cp14_regs.cclkcfg; + break; + case PWRMODE: // cp 14 reg 7 + //printf("cp14_mrc pwrmode \n"); + *data = pxa_cp14_regs.pwrmode; + break; + default: + *data = 0; + printf ("SKYEYE:cp14_mrc unknown cp14 regs!!!!!!\n"); + break; + } + return 0; +} +unsigned xscale_cp14_mcr (ARMul_State * state, unsigned type, ARMword instr, + ARMword data) +{ + unsigned opcode_2 = BITS (5, 7); + unsigned CRm = BITS (0, 3); + unsigned reg = BITS (16, 19); + unsigned result; + + //printf("SKYEYE: xscale_cp14_mcr:opcode_2 0x%x, CRm 0x%x, reg 0x%x,reg[15] 0x%x, instr %x\n",opcode_2,CRm,reg,\ + state->Reg[15], instr); + + switch (reg) { + case CCLKCFG: // cp 14 reg 6 + //printf("cp14_mcr cclkcfg \n"); + pxa_cp14_regs.cclkcfg = data & 0xf; + break; + case PWRMODE: // cp 14 reg 7 + //printf("cp14_mcr pwrmode \n"); + pxa_cp14_regs.pwrmode = data & 0x3; + break; + default:printf ("SKYEYE: cp14_mcr unknown cp14 regs!!!!!!\n"); + break; + } + return 0; +} +unsigned xscale_cp14_cdp (ARMul_State * state, unsigned type, ARMword instr) +{ + printf ("SKYEYE: xscale_cp14_cdp: ERROR isn't existed, reg15 0x%x\n", + state->Reg[15]); + SKYEYE_OUTREGS (stderr); + // skyeye_exit (-1); + return 0; //No matter return value, only for compiler. +} +unsigned xscale_cp14_read_reg (ARMul_State * state, unsigned reg, + ARMword * data) +{ + printf ("SKYEYE: xscale_cp14_read_reg: ERROR isn't existed, reg15 0x%x\n", state->Reg[15]); + SKYEYE_OUTREGS (stderr); + // skyeye_exit (-1); + return 0; //No matter return value, only for compiler. +} +unsigned xscale_cp14_write_reg (ARMul_State * state, unsigned reg, + ARMword data) +{ + printf ("SKYEYE: xscale_cp14_write_reg: ERROR isn't existed, reg15 0x%x\n", state->Reg[15]); + SKYEYE_OUTREGS (stderr); + // skyeye_exit (-1); + + return 0; //No matter return value, only for compiler. +} + +//------------------------------------------------------------------ +//cp15 ------------------------------------- +unsigned xscale_cp15_ldc (ARMul_State * state, unsigned type, ARMword instr, + ARMword data) +{ + printf ("SKYEYE: xscale_cp15_ldc: ERROR isn't existed\n"); + SKYEYE_OUTREGS (stderr); + // skyeye_exit (-1); + + return 0; //No matter return value, only for compiler. +} +unsigned xscale_cp15_stc (ARMul_State * state, unsigned type, ARMword instr, + ARMword * data) +{ + printf ("SKYEYE: xscale_cp15_stc: ERROR isn't existed\n"); + SKYEYE_OUTREGS (stderr); + // skyeye_exit (-1); + + return 0; //No matter return value, only for compiler. +} +unsigned xscale_cp15_cdp (ARMul_State * state, unsigned type, ARMword instr) +{ + printf ("SKYEYE: xscale_cp15_cdp: ERROR isn't existed\n"); + SKYEYE_OUTREGS (stderr); + // skyeye_exit (-1); + + return 0; //No matter return value, only for compiler. +} +unsigned xscale_cp15_read_reg (ARMul_State * state, unsigned reg, + ARMword * data) +{ +//chy 2003-09-03: for xsacle_cp15_cp_access_allowed + if (reg == 15) { + *data = state->mmu.copro_access; + //printf("SKYEYE: xscale_cp15_read_reg: reg 0x%x,data %x\n",reg,*data); + return 0; + } + printf ("SKYEYE: xscale_cp15_read_reg: reg 0x%x, ERROR isn't existed\n", reg); + SKYEYE_OUTREGS (stderr); + // skyeye_exit (-1); + + return 0; //No matter return value, only for compiler. +} + +//chy 2003-09-03 used by macro CP_ACCESS_ALLOWED in armemu.h +unsigned xscale_cp15_cp_access_allowed (ARMul_State * state, unsigned reg, + unsigned cpnum) +{ + unsigned data; + + xscale_cp15_read_reg (state, reg, &data); + //printf("SKYEYE: cp15_cp_access_allowed data %x, cpnum %x, result %x\n", data, cpnum, (data & 1<<cpnum)); + if (data & 1 << cpnum) + return 1; + else + return 0; +} + +unsigned xscale_cp15_write_reg (ARMul_State * state, unsigned reg, + ARMword value) +{ + switch (reg) { + case MMU_FAULT_STATUS: + //printf("SKYEYE:cp15_write_reg wrote FS val 0x%x \n",value); + state->mmu.fault_status = value & 0x6FF; + break; + case MMU_FAULT_ADDRESS: + //printf("SKYEYE:cp15_write_reg wrote FA val 0x%x \n",value); + state->mmu.fault_address = value; + break; + default: + printf ("SKYEYE: xscale_cp15_write_reg: reg 0x%x R15 %x ERROR isn't existed\n", reg, state->Reg[15]); + SKYEYE_OUTREGS (stderr); + // skyeye_exit (-1); + } + return 0; +} + +unsigned +xscale_cp15_init (ARMul_State * state) +{ + xscale_mmu_desc_t *desc; + cache_desc_t *c_desc; + + state->mmu.control = 0; + state->mmu.translation_table_base = 0xDEADC0DE; + state->mmu.domain_access_control = 0xDEADC0DE; + state->mmu.fault_status = 0; + state->mmu.fault_address = 0; + state->mmu.process_id = 0; + state->mmu.cache_type = 0xB1AA1AA; //0000 1011 0001 1010 1010 0001 1010 1010 + state->mmu.aux_control = 0; + + desc = &pxa_mmu_desc; + + if (mmu_tlb_init (I_TLB (), desc->i_tlb)) { + ERROR_LOG(ARM11, "i_tlb init %d\n", -1); + goto i_tlb_init_error; + } + + c_desc = &desc->i_cache; + if (mmu_cache_init (I_CACHE (), c_desc->width, c_desc->way, + c_desc->set, c_desc->w_mode)) { + ERROR_LOG(ARM11, "i_cache init %d\n", -1); + goto i_cache_init_error; + } + + if (mmu_tlb_init (D_TLB (), desc->d_tlb)) { + ERROR_LOG(ARM11, "d_tlb init %d\n", -1); + goto d_tlb_init_error; + } + + c_desc = &desc->main_d_cache; + if (mmu_cache_init (MAIN_D_CACHE (), c_desc->width, c_desc->way, + c_desc->set, c_desc->w_mode)) { + ERROR_LOG(ARM11, "main_d_cache init %d\n", -1); + goto main_d_cache_init_error; + } + + c_desc = &desc->mini_d_cache; + if (mmu_cache_init (MINI_D_CACHE (), c_desc->width, c_desc->way, + c_desc->set, c_desc->w_mode)) { + ERROR_LOG(ARM11, "mini_d_cache init %d\n", -1); + goto mini_d_cache_init_error; + } + + if (mmu_wb_init (WB (), desc->wb.num, desc->wb.nb)) { + ERROR_LOG(ARM11, "wb init %d\n", -1); + goto wb_init_error; + } +#if 0 + if (mmu_rb_init (RB (), desc->rb)) { + ERROR_LOG(ARM11, "rb init %d\n", -1); + goto rb_init_error; + } +#endif + + return 0; +#if 0 + rb_init_error: + mmu_wb_exit (WB ()); +#endif + wb_init_error: + mmu_cache_exit (MINI_D_CACHE ()); + mini_d_cache_init_error: + mmu_cache_exit (MAIN_D_CACHE ()); + main_d_cache_init_error: + mmu_tlb_exit (D_TLB ()); + d_tlb_init_error: + mmu_cache_exit (I_CACHE ()); + i_cache_init_error: + mmu_tlb_exit (I_TLB ()); + i_tlb_init_error: + return -1; +} + +unsigned +xscale_cp15_exit (ARMul_State * state) +{ + //mmu_rb_exit(RB()); + mmu_wb_exit (WB ()); + mmu_cache_exit (MINI_D_CACHE ()); + mmu_cache_exit (MAIN_D_CACHE ()); + mmu_tlb_exit (D_TLB ()); + mmu_cache_exit (I_CACHE ()); + mmu_tlb_exit (I_TLB ()); + return 0; +}; + + +static fault_t + xscale_mmu_load_instr (ARMul_State * state, ARMword va, + ARMword * instr) +{ + fault_t fault; + tlb_entry_t *tlb; + cache_line_t *cache; + int c; //cache bit + ARMword pa; //physical addr + + static int debug_count = 0; //used for debug + + DEBUG_LOG(ARM11, "va = %x\n", va); + + va = mmu_pid_va_map (va); + if (MMU_Enabled) { + /*align check */ + if ((va & (INSN_SIZE - 1)) && MMU_Aligned) { + DEBUG_LOG(ARM11, "align\n"); + return ALIGNMENT_FAULT; + } + else + va &= ~(INSN_SIZE - 1); + + /*translate tlb */ + fault = translate (state, va, I_TLB (), &tlb); + if (fault) { + DEBUG_LOG(ARM11, "translate\n"); + return fault; + } + + /*check access */ + fault = check_access (state, va, tlb, 1); + if (fault) { + DEBUG_LOG(ARM11, "check_fault\n"); + return fault; + } + } + //chy 2003-09-02 for test, don't use cache ????? +#if 0 + /*search cache no matter MMU enabled/disabled */ + cache = mmu_cache_search (state, I_CACHE (), va); + if (cache) { + *instr = cache->data[va_cache_index (va, I_CACHE ())]; + return 0; + } +#endif + /*if MMU disabled or C flag is set alloc cache */ + if (MMU_Disabled) { + c = 1; + pa = va; + } + else { + c = tlb_c_flag (tlb); + pa = tlb_va_to_pa (tlb, va); + } + + //chy 2003-09-03 only read mem, don't use cache now,will change later ???? + //*instr = mem_read_word (state, pa); + bus_read(32, pa, instr); +#if 0 +//----------------------------------------------------------- + //chy 2003-09-02 for test???? + if (pa >= 0xa01c8000 && pa <= 0xa01c8020) { + printf ("SKYEYE:load_instr: pa %x, va %x,instr %x, R15 %x\n", + pa, va, *instr, state->Reg[15]); + } + +//---------------------------------------------------------------------- +#endif + return NO_FAULT; + + if (c) { + int index; + + debug_count++; + cache = mmu_cache_alloc (state, I_CACHE (), va, pa); + index = va_cache_index (va, I_CACHE ()); + *instr = cache->data[va_cache_index (va, I_CACHE ())]; + } + else + //*instr = mem_read_word (state, pa); + bus_read(32, pa, instr); + + return NO_FAULT; +}; + + + +static fault_t + xscale_mmu_read_byte (ARMul_State * state, ARMword virt_addr, + ARMword * data) +{ + //ARMword temp,offset; + fault_t fault; + fault = xscale_mmu_read (state, virt_addr, data, ARM_BYTE_TYPE); + return fault; +} + +static fault_t + xscale_mmu_read_halfword (ARMul_State * state, ARMword virt_addr, + ARMword * data) +{ + //ARMword temp,offset; + fault_t fault; + fault = xscale_mmu_read (state, virt_addr, data, ARM_HALFWORD_TYPE); + return fault; +} + +static fault_t + xscale_mmu_read_word (ARMul_State * state, ARMword virt_addr, + ARMword * data) +{ + return xscale_mmu_read (state, virt_addr, data, ARM_WORD_TYPE); +} + + + + +static fault_t + xscale_mmu_read (ARMul_State * state, ARMword va, ARMword * data, + ARMword datatype) +{ + fault_t fault; +// rb_entry_t *rb; + tlb_entry_t *tlb; + cache_line_t *cache; + ARMword pa, real_va, temp, offset; + //chy 2003-09-02 for test ???? + static unsigned chyst1 = 0, chyst2 = 0; + + DEBUG_LOG(ARM11, "va = %x\n", va); + + va = mmu_pid_va_map (va); + real_va = va; + /*if MMU disabled, memory_read */ + if (MMU_Disabled) { + //*data = mem_read_word(state, va); + if (datatype == ARM_BYTE_TYPE) + //*data = mem_read_byte (state, va); + bus_read(8, va, data); + else if (datatype == ARM_HALFWORD_TYPE) + //*data = mem_read_halfword (state, va); + bus_read(16, va, data); + else if (datatype == ARM_WORD_TYPE) + //*data = mem_read_word (state, va); + bus_read(32, va, data); + else { + printf ("SKYEYE:1 xscale_mmu_read error: unknown data type %d\n", datatype); + // skyeye_exit (-1); + } + + return NO_FAULT; + } + + /*align check */ + if (((va & 3) && (datatype == ARM_WORD_TYPE) && MMU_Aligned) || + ((va & 1) && (datatype == ARM_HALFWORD_TYPE) && MMU_Aligned)) { + DEBUG_LOG(ARM11, "align\n"); + return ALIGNMENT_FAULT; + } // else + + va &= ~(WORD_SIZE - 1); + + /*translate va to tlb */ + fault = translate (state, va, D_TLB (), &tlb); + if (fault) { + DEBUG_LOG(ARM11, "translate\n"); + return fault; + } + /*check access permission */ + fault = check_access (state, va, tlb, 1); + if (fault) + return fault; + +#if 0 +//------------------------------------------------ +//chy 2003-09-02 for test only ,should commit ???? + if (datatype == ARM_WORD_TYPE) { + if (real_va >= 0xffff0000 && real_va <= 0xffff0020) { + pa = tlb_va_to_pa (tlb, va); + *data = mem_read_word (state, pa); + chyst1++; + printf ("**SKYEYE:mmu_read word %d: pa %x, va %x, data %x, R15 %x\n", chyst1, pa, real_va, *data, state->Reg[15]); + /* + cache==mmu_cache_search(state,MAIN_D_CACHE(),va); + if(cache){ + *data = cache->data[va_cache_index(va, MAIN_D_CACHE())]; + printf("cached data %x\n",*data); + }else printf("no cached data\n"); + */ + } + } +//------------------------------------------------- +#endif +#if 0 + /*search in read buffer */ + rb = mmu_rb_search (RB (), va); + if (rb) { + if (rb->fault) + return rb->fault; + *data = rb->data[(va & (rb_masks[rb->type] - 1)) >> WORD_SHT]; + goto datatrans; + //return 0; + }; +#endif + + /*2004-07-19 chy: add support of xscale MMU CacheDisabled option */ + if (MMU_CacheDisabled) { + //if(1){ can be used to test cache error + /*get phy_addr */ + pa = tlb_va_to_pa (tlb, real_va); + if (datatype == ARM_BYTE_TYPE) + //*data = mem_read_byte (state, pa); + bus_read(8, pa, data); + else if (datatype == ARM_HALFWORD_TYPE) + //*data = mem_read_halfword (state, pa); + bus_read(16, pa, data); + else if (datatype == ARM_WORD_TYPE) + //*data = mem_read_word (state, pa); + bus_read(32, pa, data); + else { + printf ("SKYEYE:MMU_CacheDisabled xscale_mmu_read error: unknown data type %d\n", datatype); + // skyeye_exit (-1); + } + return NO_FAULT; + } + + + /*search main cache */ + cache = mmu_cache_search (state, MAIN_D_CACHE (), va); + if (cache) { + *data = cache->data[va_cache_index (va, MAIN_D_CACHE ())]; +#if 0 +//------------------------------------------------------------------------ +//chy 2003-09-02 for test only ,should commit ???? + if (real_va >= 0xffff0000 && real_va <= 0xffff0020) { + pa = tlb_va_to_pa (tlb, va); + chyst2++; + printf ("**SKYEYE:mmu_read wordk:cache %d: pa %x, va %x, data %x, R15 %x\n", chyst2, pa, real_va, *data, state->Reg[15]); + } +//------------------------------------------------------------------- +#endif + goto datatrans; + //return 0; + } + //chy 2003-08-24, now maybe we don't need minidcache ???? +#if 0 + /*search mini cache */ + cache = mmu_cache_search (state, MINI_D_CACHE (), va); + if (cache) { + *data = cache->data[va_cache_index (va, MINI_D_CACHE ())]; + goto datatrans; + //return 0; + } +#endif + /*get phy_addr */ + pa = tlb_va_to_pa (tlb, va); + //chy 2003-08-24 , in xscale it means what ????? +#if 0 + if ((pa >= 0xe0000000) && (pa < 0xe8000000)) { + + if (tlb_c_flag (tlb)) { + if (tlb_b_flag (tlb)) { + mmu_cache_soft_flush (state, MAIN_D_CACHE (), + pa); + } + else { + mmu_cache_soft_flush (state, MINI_D_CACHE (), + pa); + } + } + return 0; + } +#endif + //chy 2003-08-24, check phy addr + //ywc 2004-11-30, inactive this check because of using 0xc0000000 as the framebuffer start address + /* + if(pa >= 0xb0000000){ + printf("SKYEYE:xscale_mmu_read: phy address 0x%x error,reg[15] 0x%x\n",pa,state->Reg[15]); + return 0; + } + */ + + //chy 2003-08-24, now maybe we don't need wb ???? +#if 0 + /*if Buffer, drain Write Buffer first */ + if (tlb_b_flag (tlb)) + mmu_wb_drain_all (state, WB ()); +#endif + /*alloc cache or mem_read */ + if (tlb_c_flag (tlb) && MMU_DCacheEnabled) { + cache_s *cache_t; + + if (tlb_b_flag (tlb)) + cache_t = MAIN_D_CACHE (); + else + cache_t = MINI_D_CACHE (); + cache = mmu_cache_alloc (state, cache_t, va, pa); + *data = cache->data[va_cache_index (va, cache_t)]; + } + else { + //*data = mem_read_word(state, pa); + if (datatype == ARM_BYTE_TYPE) + //*data = mem_read_byte (state, pa | (real_va & 3)); + bus_read(8, pa | (real_va & 3), data); + else if (datatype == ARM_HALFWORD_TYPE) + //*data = mem_read_halfword (state, pa | (real_va & 2)); + bus_read(16, pa | (real_va & 2), data); + else if (datatype == ARM_WORD_TYPE) + //*data = mem_read_word (state, pa); + bus_read(32, pa, data); + else { + printf ("SKYEYE:2 xscale_mmu_read error: unknown data type %d\n", datatype); + // skyeye_exit (-1); + } + return NO_FAULT; + } + + + datatrans: + if (datatype == ARM_HALFWORD_TYPE) { + temp = *data; + offset = (((ARMword) state->bigendSig * 2) ^ (real_va & 2)) << 3; /* bit offset into the word */ + *data = (temp >> offset) & 0xffff; + } + else if (datatype == ARM_BYTE_TYPE) { + temp = *data; + offset = (((ARMword) state->bigendSig * 3) ^ (real_va & 3)) << 3; /* bit offset into the word */ + *data = (temp >> offset & 0xffL); + } + end: + return NO_FAULT; +} + + +static fault_t + xscale_mmu_write_byte (ARMul_State * state, ARMword virt_addr, + ARMword data) +{ + return xscale_mmu_write (state, virt_addr, data, ARM_BYTE_TYPE); +} + +static fault_t + xscale_mmu_write_halfword (ARMul_State * state, ARMword virt_addr, + ARMword data) +{ + return xscale_mmu_write (state, virt_addr, data, ARM_HALFWORD_TYPE); +} + +static fault_t + xscale_mmu_write_word (ARMul_State * state, ARMword virt_addr, + ARMword data) +{ + return xscale_mmu_write (state, virt_addr, data, ARM_WORD_TYPE); +} + + + +static fault_t + xscale_mmu_write (ARMul_State * state, ARMword va, ARMword data, + ARMword datatype) +{ + tlb_entry_t *tlb; + cache_line_t *cache; + cache_s *cache_t; + int b; + ARMword pa, real_va, temp, offset; + fault_t fault; + + ARMword index; +//chy 2003-09-02 for test ???? +// static unsigned chyst1=0,chyst2=0; + + DEBUG_LOG(ARM11, "va = %x, val = %x\n", va, data); + va = mmu_pid_va_map (va); + real_va = va; + + if (MMU_Disabled) { + //mem_write_word(state, va, data); + if (datatype == ARM_BYTE_TYPE) + //mem_write_byte (state, va, data); + bus_write(8, va, data); + else if (datatype == ARM_HALFWORD_TYPE) + //mem_write_halfword (state, va, data); + bus_write(16, va, data); + else if (datatype == ARM_WORD_TYPE) + //mem_write_word (state, va, data); + bus_write(32, va, data); + else { + printf ("SKYEYE:1 xscale_mmu_write error: unknown data type %d\n", datatype); + // skyeye_exit (-1); + } + + return NO_FAULT; + } + /*align check */ + if (((va & 3) && (datatype == ARM_WORD_TYPE) && MMU_Aligned) || + ((va & 1) && (datatype == ARM_HALFWORD_TYPE) && MMU_Aligned)) { + DEBUG_LOG(ARM11, "align\n"); + return ALIGNMENT_FAULT; + } //else + va &= ~(WORD_SIZE - 1); + /*tlb translate */ + fault = translate (state, va, D_TLB (), &tlb); + if (fault) { + DEBUG_LOG(ARM11, "translate\n"); + return fault; + } + /*tlb check access */ + fault = check_access (state, va, tlb, 0); + if (fault) { + DEBUG_LOG(ARM11, "check_access\n"); + return fault; + } + + /*2004-07-19 chy: add support for xscale MMU_CacheDisabled */ + if (MMU_CacheDisabled) { + //if(1){ can be used to test the cache error + /*get phy_addr */ + pa = tlb_va_to_pa (tlb, real_va); + if (datatype == ARM_BYTE_TYPE) + //mem_write_byte (state, pa, data); + bus_write(8, pa, data); + else if (datatype == ARM_HALFWORD_TYPE) + //mem_write_halfword (state, pa, data); + bus_write(16, pa, data); + else if (datatype == ARM_WORD_TYPE) + //mem_write_word (state, pa, data); + bus_write(32, pa , data); + else { + printf ("SKYEYE:MMU_CacheDisabled xscale_mmu_write error: unknown data type %d\n", datatype); + // skyeye_exit (-1); + } + + return NO_FAULT; + } + + /*search main cache */ + b = tlb_b_flag (tlb); + pa = tlb_va_to_pa (tlb, va); + cache = mmu_cache_search (state, MAIN_D_CACHE (), va); + if (cache) { + cache_t = MAIN_D_CACHE (); + goto has_cache; + } + //chy 2003-08-24, now maybe we don't need minidcache ???? +#if 0 + /*search mini cache */ + cache = mmu_cache_search (state, MINI_D_CACHE (), va); + if (cache) { + cache_t = MINI_D_CACHE (); + goto has_cache; + } +#endif + b = tlb_b_flag (tlb); + pa = tlb_va_to_pa (tlb, va); + //chy 2003-08-24, check phy addr 0xa0000000, size 0x04000000 + //ywc 2004-11-30, inactive this check because of using 0xc0000000 as the framebuffer start address + /* + if(pa >= 0xb0000000){ + printf("SKYEYE:xscale_mmu_write phy address 0x%x error,reg[15] 0x%x\n",pa,state->Reg[15]); + return 0; + } + */ + + //chy 2003-08-24, now maybe we don't need WB ???? +#if 0 + if (b) { + if (MMU_WBEnabled) { + if (datatype == ARM_WORD_TYPE) + mmu_wb_write_bytes (state, WB (), pa, &data, + 4); + else if (datatype == ARM_HALFWORD_TYPE) + mmu_wb_write_bytes (state, WB (), + (pa | (real_va & 2)), + &data, 2); + else if (datatype == ARM_BYTE_TYPE) + mmu_wb_write_bytes (state, WB (), + (pa | (real_va & 3)), + &data, 1); + + } + else { + if (datatype == ARM_WORD_TYPE) + mem_write_word (state, pa, data); + else if (datatype == ARM_HALFWORD_TYPE) + mem_write_halfword (state, + (pa | (real_va & 2)), + data); + else if (datatype == ARM_BYTE_TYPE) + mem_write_byte (state, (pa | (real_va & 3)), + data); + } + } + else { + + mmu_wb_drain_all (state, WB ()); + + if (datatype == ARM_WORD_TYPE) + mem_write_word (state, pa, data); + else if (datatype == ARM_HALFWORD_TYPE) + mem_write_halfword (state, (pa | (real_va & 2)), + data); + else if (datatype == ARM_BYTE_TYPE) + mem_write_byte (state, (pa | (real_va & 3)), data); + } +#endif + //chy 2003-08-24, just write phy addr + if (datatype == ARM_WORD_TYPE) + //mem_write_word (state, pa, data); + bus_write(32, pa, data); + else if (datatype == ARM_HALFWORD_TYPE) + //mem_write_halfword (state, (pa | (real_va & 2)), data); + bus_write(16, pa | (real_va & 2), data); + else if (datatype == ARM_BYTE_TYPE) + //mem_write_byte (state, (pa | (real_va & 3)), data); + bus_write(8, (pa | (real_va & 3)), data); +#if 0 +//------------------------------------------------------------- +//chy 2003-09-02 for test ???? + if (datatype == ARM_WORD_TYPE) { + if (real_va >= 0xffff0000 && real_va <= 0xffff0020) { + printf ("**SKYEYE:mmu_write word: pa %x, va %x, data %x, R15 %x \n", pa, real_va, data, state->Reg[15]); + } + } +//-------------------------------------------------------------- +#endif + return NO_FAULT; + + has_cache: + index = va_cache_index (va, cache_t); + //cache->data[index] = data; + + if (datatype == ARM_WORD_TYPE) + cache->data[index] = data; + else if (datatype == ARM_HALFWORD_TYPE) { + temp = cache->data[index]; + offset = (((ARMword) state->bigendSig * 2) ^ (real_va & 2)) << 3; /* bit offset into the word */ + cache->data[index] = + (temp & ~(0xffffL << offset)) | ((data & 0xffffL) << + offset); + } + else if (datatype == ARM_BYTE_TYPE) { + temp = cache->data[index]; + offset = (((ARMword) state->bigendSig * 3) ^ (real_va & 3)) << 3; /* bit offset into the word */ + cache->data[index] = + (temp & ~(0xffL << offset)) | ((data & 0xffL) << + offset); + } + + if (index < (cache_t->width >> (WORD_SHT + 1))) + cache->tag |= TAG_FIRST_HALF_DIRTY; + else + cache->tag |= TAG_LAST_HALF_DIRTY; +//------------------------------------------------------------- +//chy 2003-09-03 be sure the changed value will be in memory as soon as possible, so I cache can get the newest value +#if 0 + { + if (datatype == ARM_WORD_TYPE) + mem_write_word (state, pa, data); + else if (datatype == ARM_HALFWORD_TYPE) + mem_write_halfword (state, (pa | (real_va & 2)), + data); + else if (datatype == ARM_BYTE_TYPE) + mem_write_byte (state, (pa | (real_va & 3)), data); + } +#endif +#if 0 +//chy 2003-09-02 for test ???? + if (datatype == ARM_WORD_TYPE) { + if (real_va >= 0xffff0000 && real_va <= 0xffff0020) { + printf ("**SKYEYE:mmu_write word:cache: pa %x, va %x, data %x, R15 %x\n", pa, real_va, data, state->Reg[15]); + } + } +//------------------------------------------------------------- +#endif + if (datatype == ARM_WORD_TYPE) + //mem_write_word (state, pa, data); + bus_write(32, pa, data); + else if (datatype == ARM_HALFWORD_TYPE) + //mem_write_halfword (state, (pa | (real_va & 2)), data); + bus_write(16, pa | (real_va & 2), data); + else if (datatype == ARM_BYTE_TYPE) + //mem_write_byte (state, (pa | (real_va & 3)), data); + bus_write(8, (pa | (real_va & 3)), data); + return NO_FAULT; +} + +ARMword xscale_cp15_mrc (ARMul_State * state, + unsigned type, ARMword instr, ARMword * value) +{ + return xscale_mmu_mrc (state, instr, value); +} + +ARMword xscale_mmu_mrc (ARMul_State * state, ARMword instr, ARMword * value) +{ + ARMword data; + unsigned opcode_2 = BITS (5, 7); + unsigned CRm = BITS (0, 3); + unsigned reg = BITS (16, 19); + unsigned result; + mmu_regnum_t creg = (mmu_regnum_t)reg; + +/* + printf("SKYEYE: xscale_cp15_mrc:opcode_2 0x%x, CRm 0x%x, reg 0x%x,reg[15] 0x%x, instr %x\n",opcode_2,CRm,reg,\ + state->Reg[15], instr); +*/ + switch (creg) { + case MMU_ID: //XSCALE_CP15 + //printf("mmu_mrc read ID \n"); + data = (opcode_2 ? state->mmu.cache_type : state->cpu-> + cpu_val); + break; + case MMU_CONTROL: //XSCALE_CP15_AUX_CONTROL + //printf("mmu_mrc read CONTROL \n"); + data = (opcode_2 ? state->mmu.aux_control : state->mmu. + control); + break; + case MMU_TRANSLATION_TABLE_BASE: + //printf("mmu_mrc read TTB \n"); + data = state->mmu.translation_table_base; + break; + case MMU_DOMAIN_ACCESS_CONTROL: + //printf("mmu_mrc read DACR \n"); + data = state->mmu.domain_access_control; + break; + case MMU_FAULT_STATUS: + //printf("mmu_mrc read FSR \n"); + data = state->mmu.fault_status; + break; + case MMU_FAULT_ADDRESS: + //printf("mmu_mrc read FAR \n"); + data = state->mmu.fault_address; + break; + case MMU_PID: + //printf("mmu_mrc read PID \n"); + data = state->mmu.process_id; + case XSCALE_CP15_COPRO_ACCESS: + //printf("xscale cp15 read coprocessor access\n"); + data = state->mmu.copro_access; + break; + default: + data = 0; + printf ("SKYEYE: xscale_cp15_mrc read UNKNOWN - reg %d, pc 0x%x\n", creg, state->Reg[15]); + // skyeye_exit (-1); + break; + } + *value = data; + //printf("SKYEYE: xscale_cp15_mrc:end value 0x%x\n",data); + return ARMul_DONE; +} + +void xscale_cp15_cache_ops (ARMul_State * state, ARMword instr, ARMword value) +{ +//chy: 2003-08-24 now, the BTB isn't simualted ....???? + + unsigned CRm, OPC_2; + + CRm = BITS (0, 3); + OPC_2 = BITS (5, 7); + //err_msg("SKYEYE: xscale cp15_cache_ops:OPC_2 = 0x%x CRm = 0x%x, Reg15 0x%x\n", OPC_2, CRm,state->Reg[15]); + + if (OPC_2 == 0 && CRm == 7) { + mmu_cache_invalidate_all (state, I_CACHE ()); + mmu_cache_invalidate_all (state, MAIN_D_CACHE ()); + return; + } + + if (OPC_2 == 0 && CRm == 5) { + mmu_cache_invalidate_all (state, I_CACHE ()); + return; + } + if (OPC_2 == 1 && CRm == 5) { + mmu_cache_invalidate (state, I_CACHE (), value); + return; + } + + if (OPC_2 == 0 && CRm == 6) { + mmu_cache_invalidate_all (state, MAIN_D_CACHE ()); + return; + } + + if (OPC_2 == 1 && CRm == 6) { + mmu_cache_invalidate (state, MAIN_D_CACHE (), value); + return; + } + + if (OPC_2 == 1 && CRm == 0xa) { + mmu_cache_clean (state, MAIN_D_CACHE (), value); + return; + } + + if (OPC_2 == 4 && CRm == 0xa) { + mmu_wb_drain_all (state, WB ()); + return; + } + + if (OPC_2 == 6 && CRm == 5) { + //chy 2004-07-19 shoud fix in the future????!!!! + //printf("SKYEYE: xscale_cp15_cache_ops:invalidate BTB CANT!!!!!!!!!!\n"); + //exit(-1); + return; + } + + if (OPC_2 == 5 && CRm == 2) { + //printf("SKYEYE: cp15_c_o: A L in D C, value %x, reg15 %x\n",value, state->Reg[15]); + //exit(-1); + //chy 2003-09-01 for test + mmu_cache_invalidate_all (state, MAIN_D_CACHE ()); + return; + } + + ERROR_LOG(ARM11, "SKYEYE: xscale cp15_cache_ops:Unknown OPC_2 = 0x%x CRm = 0x%x, Reg15 0x%x\n", OPC_2, CRm, state->Reg[15]); + // skyeye_exit (-1); +} + +static void + xscale_cp15_tlb_ops (ARMul_State * state, ARMword instr, + ARMword value) +{ + int CRm, OPC_2; + + CRm = BITS (0, 3); + OPC_2 = BITS (5, 7); + + + //err_msg("SKYEYE:xscale_cp15_tlb_ops:OPC_2 = 0x%x CRm = 0x%x,Reg[15] 0x%x\n", OPC_2, CRm,state->Reg[15]); + if (OPC_2 == 0 && CRm == 0x7) { + mmu_tlb_invalidate_all (state, I_TLB ()); + mmu_tlb_invalidate_all (state, D_TLB ()); + return; + } + + if (OPC_2 == 0 && CRm == 0x5) { + mmu_tlb_invalidate_all (state, I_TLB ()); + return; + } + + if (OPC_2 == 1 && CRm == 0x5) { + mmu_tlb_invalidate_entry (state, I_TLB (), value); + return; + } + + if (OPC_2 == 0 && CRm == 0x6) { + mmu_tlb_invalidate_all (state, D_TLB ()); + return; + } + + if (OPC_2 == 1 && CRm == 0x6) { + mmu_tlb_invalidate_entry (state, D_TLB (), value); + return; + } + + ERROR_LOG(ARM11, "SKYEYE:xscale_cp15_tlb_ops:Unknow OPC_2 = 0x%x CRm = 0x%x,Reg[15] 0x%x\n", OPC_2, CRm, state->Reg[15]); + // skyeye_exit (-1); +} + + +ARMword xscale_cp15_mcr (ARMul_State * state, + unsigned type, ARMword instr, ARMword value) +{ + return xscale_mmu_mcr (state, instr, value); +} + +ARMword xscale_mmu_mcr (ARMul_State * state, ARMword instr, ARMword value) +{ + ARMword data; + unsigned opcode_2 = BITS (5, 7); + unsigned CRm = BITS (0, 3); + unsigned reg = BITS (16, 19); + unsigned result; + mmu_regnum_t creg = (mmu_regnum_t)reg; + + //printf("SKYEYE: xscale_cp15_mcr: opcode_2 0x%x, CRm 0x%x, reg ox%x, value 0x%x, reg[15] 0x%x, instr 0x%x\n",opcode_2,CRm,reg, value, state->Reg[15], instr); + + switch (creg) { + case MMU_CONTROL: + //printf("mmu_mcr wrote CONTROL val 0x%x \n",value); + state->mmu.control = + (opcode_2 ? (value & 0x33) : (value & 0x3FFF)); + break; + case MMU_TRANSLATION_TABLE_BASE: + //printf("mmu_mcr wrote TTB val 0x%x \n",value); + state->mmu.translation_table_base = value & 0xFFFFC000; + break; + case MMU_DOMAIN_ACCESS_CONTROL: + //printf("mmu_mcr wrote DACR val 0x%x \n",value); + state->mmu.domain_access_control = value; + break; + + case MMU_FAULT_STATUS: + //printf("mmu_mcr wrote FS val 0x%x \n",value); + state->mmu.fault_status = value & 0x6FF; + break; + case MMU_FAULT_ADDRESS: + //printf("mmu_mcr wrote FA val 0x%x \n",value); + state->mmu.fault_address = value; + break; + + case MMU_CACHE_OPS: +// printf("mmu_mcr wrote CO val 0x%x \n",value); + xscale_cp15_cache_ops (state, instr, value); + break; + case MMU_TLB_OPS: + //printf("mmu_mcr wrote TO val 0x%x \n",value); + xscale_cp15_tlb_ops (state, instr, value); + break; + case MMU_PID: + //printf("mmu_mcr wrote PID val 0x%x \n",value); + state->mmu.process_id = value & 0xfe000000; + break; + case XSCALE_CP15_COPRO_ACCESS: + //printf("xscale cp15 write coprocessor access val 0x %x\n",value); + state->mmu.copro_access = value & 0x3ff; + break; + + default: + printf ("SKYEYE: xscale_cp15_mcr wrote UNKNOWN - reg %d, reg15 0x%x\n", creg, state->Reg[15]); + break; + } + //printf("SKYEYE: xscale_cp15_mcr wrote val 0x%x\n", value); + return 0; +} + +//teawater add for arm2x86 2005.06.24------------------------------------------- +static int xscale_mmu_v2p_dbct (ARMul_State * state, ARMword virt_addr, + ARMword * phys_addr) +{ + fault_t fault; + tlb_entry_t *tlb; + + virt_addr = mmu_pid_va_map (virt_addr); + if (MMU_Enabled) { + + /*align check */ + if ((virt_addr & (WORD_SIZE - 1)) && MMU_Aligned) { + DEBUG_LOG(ARM11, "align\n"); + return ALIGNMENT_FAULT; + } + else + virt_addr &= ~(WORD_SIZE - 1); + + /*translate tlb */ + fault = translate (state, virt_addr, I_TLB (), &tlb); + if (fault) { + DEBUG_LOG(ARM11, "translate\n"); + return fault; + } + + /*check access */ + fault = check_access (state, virt_addr, tlb, 1); + if (fault) { + DEBUG_LOG(ARM11, "check_fault\n"); + return fault; + } + } + + if (MMU_Disabled) { + *phys_addr = virt_addr; + } + else { + *phys_addr = tlb_va_to_pa (tlb, virt_addr); + } + + return (0); +} + +//AJ2D-------------------------------------------------------------------------- + +/*xscale mmu_ops_t*/ +//mmu_ops_t xscale_mmu_ops = { +// xscale_cp15_init, +// xscale_cp15_exit, +// xscale_mmu_read_byte, +// xscale_mmu_write_byte, +// xscale_mmu_read_halfword, +// xscale_mmu_write_halfword, +// xscale_mmu_read_word, +// xscale_mmu_write_word, +// xscale_mmu_load_instr, xscale_mmu_mcr, xscale_mmu_mrc, +////teawater add for arm2x86 2005.06.24------------------------------------------- +// xscale_mmu_v2p_dbct, +////AJ2D-------------------------------------------------------------------------- +//}; |