if env['TARGET_ISA'] == 'mips':
Source('faults.cc')
Source('isa.cc')
- Source('misc_regfile.cc')
Source('tlb.cc')
Source('pagetable.cc')
Source('utility.cc')
*/
#include "arch/mips/isa.hh"
-#include "arch/mips/misc_regfile.hh"
+#include "arch/mips/mt_constants.hh"
+#include "arch/mips/mt.hh"
+#include "arch/mips/pra_constants.hh"
+#include "base/bitfield.hh"
+#include "cpu/base.hh"
#include "cpu/thread_context.hh"
namespace MipsISA
{
+std::string
+ISA::miscRegNames[NumMiscRegs] =
+{
+ "Index", "MVPControl", "MVPConf0", "MVPConf1", "", "", "", "",
+ "Random", "VPEControl", "VPEConf0", "VPEConf1",
+ "YQMask", "VPESchedule", "VPEScheFBack", "VPEOpt",
+ "EntryLo0", "TCStatus", "TCBind", "TCRestart",
+ "TCHalt", "TCContext", "TCSchedule", "TCScheFBack",
+ "EntryLo1", "", "", "", "", "", "", "",
+ "Context", "ContextConfig", "", "", "", "", "", "",
+ "PageMask", "PageGrain", "", "", "", "", "", "",
+ "Wired", "SRSConf0", "SRCConf1", "SRSConf2",
+ "SRSConf3", "SRSConf4", "", "",
+ "HWREna", "", "", "", "", "", "", "",
+ "BadVAddr", "", "", "", "", "", "", "",
+ "Count", "", "", "", "", "", "", "",
+ "EntryHi", "", "", "", "", "", "", "",
+ "Compare", "", "", "", "", "", "", "",
+ "Status", "IntCtl", "SRSCtl", "SRSMap", "", "", "", "",
+ "Cause", "", "", "", "", "", "", "",
+ "EPC", "", "", "", "", "", "", "",
+ "PRId", "EBase", "", "", "", "", "", "",
+ "Config", "Config1", "Config2", "Config3", "", "", "", "",
+ "LLAddr", "", "", "", "", "", "", "",
+ "WatchLo0", "WatchLo1", "WatchLo2", "WatchLo3",
+ "WatchLo4", "WatchLo5", "WatchLo6", "WatchLo7",
+ "WatchHi0", "WatchHi1", "WatchHi2", "WatchHi3",
+ "WatchHi4", "WatchHi5", "WatchHi6", "WatchHi7",
+ "XCContext64", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "", "", "", "", "", "", "", "",
+ "Debug", "TraceControl1", "TraceControl2", "UserTraceData",
+ "TraceBPC", "", "", "",
+ "DEPC", "", "", "", "", "", "", "",
+ "PerfCnt0", "PerfCnt1", "PerfCnt2", "PerfCnt3",
+ "PerfCnt4", "PerfCnt5", "PerfCnt6", "PerfCnt7",
+ "ErrCtl", "", "", "", "", "", "", "",
+ "CacheErr0", "CacheErr1", "CacheErr2", "CacheErr3", "", "", "", "",
+ "TagLo0", "DataLo1", "TagLo2", "DataLo3",
+ "TagLo4", "DataLo5", "TagLo6", "DataLo7",
+ "TagHi0", "DataHi1", "TagHi2", "DataHi3",
+ "TagHi4", "DataHi5", "TagHi6", "DataHi7",
+ "ErrorEPC", "", "", "", "", "", "", "",
+ "DESAVE", "", "", "", "", "", "", "",
+ "LLFlag"
+};
+
+ISA::ISA()
+{
+ init();
+}
+
+ISA::ISA(BaseCPU *_cpu)
+{
+ cpu = _cpu;
+ init();
+}
+
+void
+ISA::init()
+{
+ miscRegFile.resize(NumMiscRegs);
+ bankType.resize(NumMiscRegs);
+
+ for (int i=0; i < NumMiscRegs; i++) {
+ miscRegFile[i].resize(1);
+ bankType[i] = perProcessor;
+ }
+
+ miscRegFile_WriteMask.resize(NumMiscRegs);
+
+ for (int i=0; i < NumMiscRegs; i++) {
+ miscRegFile_WriteMask[i].push_back(0);
+ }
+ clear(0);
+}
+
+void
+ISA::clear(unsigned tid_or_vpn)
+{
+ for(int i = 0; i < NumMiscRegs; i++) {
+ miscRegFile[i][tid_or_vpn] = 0;
+ miscRegFile_WriteMask[i][tid_or_vpn] = (long unsigned int)(-1);
+ }
+}
+
+void
+ISA::expandForMultithreading(ThreadID num_threads, unsigned num_vpes)
+{
+ // Initialize all Per-VPE regs
+ uint32_t per_vpe_regs[] = { VPEControl, VPEConf0, VPEConf1, YQMask,
+ VPESchedule, VPEScheFBack, VPEOpt, SRSConf0,
+ SRSConf1, SRSConf2, SRSConf3, SRSConf4,
+ EBase
+ };
+ uint32_t num_vpe_regs = sizeof(per_vpe_regs) / 4;
+ for (int i = 0; i < num_vpe_regs; i++) {
+ if (num_vpes > 1) {
+ miscRegFile[per_vpe_regs[i]].resize(num_vpes);
+ }
+ bankType[per_vpe_regs[i]] = perVirtProcessor;
+ }
+
+ // Initialize all Per-TC regs
+ uint32_t per_tc_regs[] = { Status, TCStatus, TCBind, TCRestart, TCHalt,
+ TCContext, TCSchedule, TCScheFBack, Debug,
+ LLAddr
+ };
+ uint32_t num_tc_regs = sizeof(per_tc_regs) / 4;
+
+ for (int i = 0; i < num_tc_regs; i++) {
+ miscRegFile[per_tc_regs[i]].resize(num_threads);
+ bankType[per_tc_regs[i]] = perThreadContext;
+ }
+
+
+ if (num_vpes > 1) {
+ for (int i=1; i < num_vpes; i++) {
+ clear(i);
+ }
+ }
+
+}
+
+//@TODO: Use MIPS STYLE CONSTANTS (e.g. TCHALT_H instead of TCH_H)
void
-ISA::clear()
+ISA::reset(std::string core_name, ThreadID num_threads,
+ unsigned num_vpes, BaseCPU *_cpu)
+{
+ DPRINTF(MipsPRA, "Resetting CP0 State with %i TCs and %i VPEs\n",
+ num_threads, num_vpes);
+ cpu = _cpu;
+
+ MipsISA::CoreSpecific &cp = cpu->coreParams;
+
+ // Do Default CP0 initialization HERE
+
+ // Do Initialization for MT cores here (eventually use
+ // core_name parameter to toggle this initialization)
+ // ===================================================
+ DPRINTF(MipsPRA, "Initializing CP0 State.... ");
+
+ MiscReg ProcID = readMiscRegNoEffect(PRId);
+ replaceBits(ProcID,PRIdCoOp_HI,PRIdCoOp_LO,cp.CP0_PRId_CompanyOptions);
+ replaceBits(ProcID,PRIdCoID_HI,PRIdCoID_LO,cp.CP0_PRId_CompanyID);
+ replaceBits(ProcID,PRIdProc_ID_HI,PRIdProc_ID_LO,cp.CP0_PRId_ProcessorID);
+ replaceBits(ProcID,PRIdRev_HI,PRIdRev_LO,cp.CP0_PRId_Revision);
+ setMiscRegNoEffect(PRId,ProcID);
+ // Now, create Write Mask for ProcID register
+ MiscReg ProcID_Mask = 0; // Read-Only register
+ replaceBits(ProcID_Mask,0,32,0);
+ setRegMask(PRId,ProcID_Mask);
+
+ // Config
+ MiscReg cfg = readMiscRegNoEffect(Config);
+ replaceBits(cfg, Config_BE_HI, Config_BE_LO, cp.CP0_Config_BE);
+ replaceBits(cfg, Config_AT_HI, Config_AT_LO, cp.CP0_Config_AT);
+ replaceBits(cfg, Config_AR_HI, Config_AR_LO, cp.CP0_Config_AR);
+ replaceBits(cfg, Config_MT_HI, Config_MT_LO, cp.CP0_Config_MT);
+ replaceBits(cfg, Config_VI_HI, Config_VI_LO, cp.CP0_Config_VI);
+ replaceBits(cfg, Config_M, 1);
+ setMiscRegNoEffect(Config, cfg);
+ // Now, create Write Mask for Config register
+ MiscReg cfg_Mask = 0x7FFF0007;
+ replaceBits(cfg_Mask,0,32,0);
+ setRegMask(Config,cfg_Mask);
+
+ // Config1
+ MiscReg cfg1 = readMiscRegNoEffect(Config1);
+ replaceBits(cfg1, Config1_MMUSize_HI, Config1_MMUSize_LO,
+ cp.CP0_Config1_MMU);
+ replaceBits(cfg1, Config1_IS_HI, Config1_IS_LO, cp.CP0_Config1_IS);
+ replaceBits(cfg1, Config1_IL_HI, Config1_IL_LO, cp.CP0_Config1_IL);
+ replaceBits(cfg1, Config1_IA_HI, Config1_IA_LO, cp.CP0_Config1_IA);
+ replaceBits(cfg1, Config1_DS_HI, Config1_DS_LO, cp.CP0_Config1_DS);
+ replaceBits(cfg1, Config1_DL_HI, Config1_DL_LO, cp.CP0_Config1_DL);
+ replaceBits(cfg1, Config1_DA_HI, Config1_DA_LO, cp.CP0_Config1_DA);
+ replaceBits(cfg1, Config1_FP_HI, Config1_FP_LO, cp.CP0_Config1_FP);
+ replaceBits(cfg1, Config1_EP_HI, Config1_EP_LO, cp.CP0_Config1_EP);
+ replaceBits(cfg1, Config1_WR_HI, Config1_WR_LO, cp.CP0_Config1_WR);
+ replaceBits(cfg1, Config1_MD_HI, Config1_MD_LO, cp.CP0_Config1_MD);
+ replaceBits(cfg1, Config1_C2_HI, Config1_C2_LO, cp.CP0_Config1_C2);
+ replaceBits(cfg1, Config1_PC_HI, Config1_PC_LO, cp.CP0_Config1_PC);
+ replaceBits(cfg1, Config1_M, cp.CP0_Config1_M);
+ setMiscRegNoEffect(Config1, cfg1);
+ // Now, create Write Mask for Config register
+ MiscReg cfg1_Mask = 0; // Read Only Register
+ replaceBits(cfg1_Mask,0,32,0);
+ setRegMask(Config1,cfg1_Mask);
+
+ // Config2
+ MiscReg cfg2 = readMiscRegNoEffect(Config2);
+ replaceBits(cfg2, Config2_TU_HI, Config2_TU_LO, cp.CP0_Config2_TU);
+ replaceBits(cfg2, Config2_TS_HI, Config2_TS_LO, cp.CP0_Config2_TS);
+ replaceBits(cfg2, Config2_TL_HI, Config2_TL_LO, cp.CP0_Config2_TL);
+ replaceBits(cfg2, Config2_TA_HI, Config2_TA_LO, cp.CP0_Config2_TA);
+ replaceBits(cfg2, Config2_SU_HI, Config2_SU_LO, cp.CP0_Config2_SU);
+ replaceBits(cfg2, Config2_SS_HI, Config2_SS_LO, cp.CP0_Config2_SS);
+ replaceBits(cfg2, Config2_SL_HI, Config2_SL_LO, cp.CP0_Config2_SL);
+ replaceBits(cfg2, Config2_SA_HI, Config2_SA_LO, cp.CP0_Config2_SA);
+ replaceBits(cfg2, Config2_M, cp.CP0_Config2_M);
+ setMiscRegNoEffect(Config2, cfg2);
+ // Now, create Write Mask for Config register
+ MiscReg cfg2_Mask = 0x7000F000; // Read Only Register
+ replaceBits(cfg2_Mask,0,32,0);
+ setRegMask(Config2,cfg2_Mask);
+
+ // Config3
+ MiscReg cfg3 = readMiscRegNoEffect(Config3);
+ replaceBits(cfg3, Config3_DSPP_HI, Config3_DSPP_LO, cp.CP0_Config3_DSPP);
+ replaceBits(cfg3, Config3_LPA_HI, Config3_LPA_LO, cp.CP0_Config3_LPA);
+ replaceBits(cfg3, Config3_VEIC_HI, Config3_VEIC_LO, cp.CP0_Config3_VEIC);
+ replaceBits(cfg3, Config3_VINT_HI, Config3_VINT_LO, cp.CP0_Config3_VInt);
+ replaceBits(cfg3, Config3_SP_HI, Config3_SP_LO, cp.CP0_Config3_SP);
+ replaceBits(cfg3, Config3_MT_HI, Config3_MT_LO, cp.CP0_Config3_MT);
+ replaceBits(cfg3, Config3_SM_HI, Config3_SM_LO, cp.CP0_Config3_SM);
+ replaceBits(cfg3, Config3_TL_HI, Config3_TL_LO, cp.CP0_Config3_TL);
+ setMiscRegNoEffect(Config3, cfg3);
+ // Now, create Write Mask for Config register
+ MiscReg cfg3_Mask = 0; // Read Only Register
+ replaceBits(cfg3_Mask,0,32,0);
+ setRegMask(Config3,cfg3_Mask);
+
+ // EBase - CPUNum
+ MiscReg EB = readMiscRegNoEffect(EBase);
+ replaceBits(EB, EBase_CPUNum_HI, EBase_CPUNum_LO, cp.CP0_EBase_CPUNum);
+ replaceBits(EB, 31, 31, 1);
+ setMiscRegNoEffect(EBase, EB);
+ // Now, create Write Mask for Config register
+ MiscReg EB_Mask = 0x3FFFF000;// Except Exception Base, the
+ // entire register is read only
+ replaceBits(EB_Mask,0,32,0);
+ setRegMask(EBase,EB_Mask);
+
+ // SRS Control - HSS (Highest Shadow Set)
+ MiscReg SC = readMiscRegNoEffect(SRSCtl);
+ replaceBits(SC, SRSCtl_HSS_HI,SRSCtl_HSS_LO,cp.CP0_SrsCtl_HSS);
+ setMiscRegNoEffect(SRSCtl, SC);
+ // Now, create Write Mask for the SRS Ctl register
+ MiscReg SC_Mask = 0x0000F3C0;
+ replaceBits(SC_Mask,0,32,0);
+ setRegMask(SRSCtl,SC_Mask);
+
+ // IntCtl - IPTI, IPPCI
+ MiscReg IC = readMiscRegNoEffect(IntCtl);
+ replaceBits(IC, IntCtl_IPTI_HI,IntCtl_IPTI_LO,cp.CP0_IntCtl_IPTI);
+ replaceBits(IC, IntCtl_IPPCI_HI,IntCtl_IPPCI_LO,cp.CP0_IntCtl_IPPCI);
+ setMiscRegNoEffect(IntCtl, IC);
+ // Now, create Write Mask for the IntCtl register
+ MiscReg IC_Mask = 0x000003E0;
+ replaceBits(IC_Mask,0,32,0);
+ setRegMask(IntCtl,IC_Mask);
+
+ // Watch Hi - M - FIXME (More than 1 Watch register)
+ MiscReg WHi = readMiscRegNoEffect(WatchHi0);
+ replaceBits(WHi, WatchHi_M, cp.CP0_WatchHi_M);
+ setMiscRegNoEffect(WatchHi0, WHi);
+ // Now, create Write Mask for the IntCtl register
+ MiscReg wh_Mask = 0x7FFF0FFF;
+ replaceBits(wh_Mask,0,32,0);
+ setRegMask(WatchHi0,wh_Mask);
+
+ // Perf Ctr - M - FIXME (More than 1 PerfCnt Pair)
+ MiscReg PCtr = readMiscRegNoEffect(PerfCnt0);
+ replaceBits(PCtr, PerfCntCtl_M, cp.CP0_PerfCtr_M);
+ replaceBits(PCtr, PerfCntCtl_W, cp.CP0_PerfCtr_W);
+ setMiscRegNoEffect(PerfCnt0, PCtr);
+ // Now, create Write Mask for the IntCtl register
+ MiscReg pc_Mask = 0x00007FF;
+ replaceBits(pc_Mask,0,32,0);
+ setRegMask(PerfCnt0,pc_Mask);
+
+ // Random
+ MiscReg random = readMiscRegNoEffect(CP0_Random);
+ random = 63;
+ setMiscRegNoEffect(CP0_Random, random);
+ // Now, create Write Mask for the IntCtl register
+ MiscReg random_Mask = 0;
+ replaceBits(random_Mask,0,32,0);
+ setRegMask(CP0_Random,random_Mask);
+
+ // PageGrain
+ MiscReg pagegrain = readMiscRegNoEffect(PageGrain);
+ replaceBits(pagegrain,PageGrain_ESP,cp.CP0_Config3_SP);
+ setMiscRegNoEffect(PageGrain, pagegrain);
+ // Now, create Write Mask for the IntCtl register
+ MiscReg pg_Mask = 0x10000000;
+ replaceBits(pg_Mask,0,32,0);
+ setRegMask(PageGrain,pg_Mask);
+
+ // Status
+ MiscReg stat = readMiscRegNoEffect(Status);
+ // Only CU0 and IE are modified on a reset - everything else needs
+ // to be controlled on a per CPU model basis
+
+ // Enable CP0 on reset
+ // replaceBits(stat, Status_CU0_HI,Status_CU0_LO, 1);
+
+ // Enable ERL bit on a reset
+ replaceBits(stat, Status_ERL_HI, Status_ERL_LO, 1);
+
+ // Enable BEV bit on a reset
+ replaceBits(stat, Status_BEV_HI, Status_BEV_LO, 1);
+
+ setMiscRegNoEffect(Status, stat);
+ // Now, create Write Mask for the Status register
+ MiscReg stat_Mask = 0xFF78FF17;
+ replaceBits(stat_Mask,0,32,0);
+ setRegMask(Status,stat_Mask);
+
+
+ // MVPConf0
+ MiscReg mvp_conf0 = readMiscRegNoEffect(MVPConf0);
+ replaceBits(mvp_conf0, MVPC0_TCA, 1);
+ replaceBits(mvp_conf0, MVPC0_PVPE_HI, MVPC0_PVPE_LO, num_vpes - 1);
+ replaceBits(mvp_conf0, MVPC0_PTC_HI, MVPC0_PTC_LO, num_threads - 1);
+ setMiscRegNoEffect(MVPConf0, mvp_conf0);
+
+ // VPEConf0
+ MiscReg vpe_conf0 = readMiscRegNoEffect(VPEConf0);
+ replaceBits(vpe_conf0, VPEC0_MVP, 1);
+ setMiscRegNoEffect(VPEConf0, vpe_conf0);
+
+ // TCBind
+ for (ThreadID tid = 0; tid < num_threads; tid++) {
+ MiscReg tc_bind = readMiscRegNoEffect(TCBind, tid);
+ replaceBits(tc_bind, TCB_CUR_TC_HI, TCB_CUR_TC_LO, tid);
+ setMiscRegNoEffect(TCBind, tc_bind, tid);
+ }
+ // TCHalt
+ MiscReg tc_halt = readMiscRegNoEffect(TCHalt);
+ replaceBits(tc_halt, TCH_H, 0);
+ setMiscRegNoEffect(TCHalt, tc_halt);
+ /*for (ThreadID tid = 1; tid < num_threads; tid++) {
+ // Set TCHalt Halt bit to 1 for all other threads
+ tc_halt = readMiscRegNoEffect(TCHalt, tid);
+ replaceBits(tc_halt, TCH_H, 1);
+ setReg(TCHalt, tc_halt, tid);
+ }*/
+
+ // TCStatus
+ // Set TCStatus Activated to 1 for the initial thread that is running
+ MiscReg tc_status = readMiscRegNoEffect(TCStatus);
+ replaceBits(tc_status, TCS_A, 1);
+ setMiscRegNoEffect(TCStatus, tc_status);
+
+ // Set Dynamically Allocatable bit to 1 for all other threads
+ for (ThreadID tid = 1; tid < num_threads; tid++) {
+ tc_status = readMiscRegNoEffect(TCStatus, tid);
+ replaceBits(tc_status, TCSTATUS_DA, 1);
+ setMiscRegNoEffect(TCStatus, tc_status, tid);
+ }
+
+
+ MiscReg Mask = 0x7FFFFFFF;
+
+ // Now, create Write Mask for the Index register
+ replaceBits(Mask,0,32,0);
+ setRegMask(Index,Mask);
+
+ Mask = 0x3FFFFFFF;
+ replaceBits(Mask,0,32,0);
+ setRegMask(EntryLo0,Mask);
+ setRegMask(EntryLo1,Mask);
+
+ Mask = 0xFF800000;
+ replaceBits(Mask,0,32,0);
+ setRegMask(Context,Mask);
+
+ Mask = 0x1FFFF800;
+ replaceBits(Mask,0,32,0);
+ setRegMask(PageMask,Mask);
+
+ Mask = 0x0;
+ replaceBits(Mask,0,32,0);
+ setRegMask(BadVAddr,Mask);
+ setRegMask(LLAddr,Mask);
+
+ Mask = 0x08C00300;
+ replaceBits(Mask,0,32,0);
+ setRegMask(Cause,Mask);
+
+}
+
+inline unsigned
+ISA::getVPENum(ThreadID tid)
{
- miscRegFile.clear();
+ unsigned tc_bind = miscRegFile[TCBind - Ctrl_Base_DepTag][tid];
+ return bits(tc_bind, TCB_CUR_VPE_HI, TCB_CUR_VPE_LO);
}
MiscReg
-ISA::readMiscRegNoEffect(int miscReg)
+ISA::readMiscRegNoEffect(int reg_idx, ThreadID tid)
+{
+ int misc_reg = reg_idx - Ctrl_Base_DepTag;
+ unsigned reg_sel = (bankType[misc_reg] == perThreadContext)
+ ? tid : getVPENum(tid);
+ DPRINTF(MipsPRA, "Reading CP0 Register:%u Select:%u (%s) (%lx).\n",
+ misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg],
+ miscRegFile[misc_reg][reg_sel]);
+ return miscRegFile[misc_reg][reg_sel];
+}
+
+//@TODO: MIPS MT's register view automatically connects
+// Status to TCStatus depending on current thread
+//template <class TC>
+MiscReg
+ISA::readMiscReg(int reg_idx, ThreadContext *tc, ThreadID tid)
+{
+ int misc_reg = reg_idx - Ctrl_Base_DepTag;
+ unsigned reg_sel = (bankType[misc_reg] == perThreadContext)
+ ? tid : getVPENum(tid);
+ DPRINTF(MipsPRA,
+ "Reading CP0 Register:%u Select:%u (%s) with effect (%lx).\n",
+ misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg],
+ miscRegFile[misc_reg][reg_sel]);
+
+
+ switch (misc_reg)
+ {
+ default:
+ return miscRegFile[misc_reg][reg_sel];
+ }
+}
+
+void
+ISA::setMiscRegNoEffect(int reg_idx, const MiscReg &val, ThreadID tid)
+{
+ int misc_reg = reg_idx - Ctrl_Base_DepTag;
+ unsigned reg_sel = (bankType[misc_reg] == perThreadContext)
+ ? tid : getVPENum(tid);
+ DPRINTF(MipsPRA,
+ "[tid:%i]: Setting (direct set) CP0 Register:%u "
+ "Select:%u (%s) to %#x.\n",
+ tid, misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg], val);
+
+ miscRegFile[misc_reg][reg_sel] = val;
+}
+
+void
+ISA::setRegMask(int reg_idx, const MiscReg &val, ThreadID tid)
{
- return miscRegFile.readRegNoEffect(miscReg);
+ // return;
+ int misc_reg = reg_idx - Ctrl_Base_DepTag;
+ unsigned reg_sel = (bankType[misc_reg] == perThreadContext)
+ ? tid : getVPENum(tid);
+ DPRINTF(MipsPRA,
+ "[tid:%i]: Setting CP0 Register: %u Select: %u (%s) to %#x\n",
+ tid, misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg], val);
+ miscRegFile_WriteMask[misc_reg][reg_sel] = val;
}
+// PROGRAMMER'S NOTES:
+// (1) Some CP0 Registers have fields that cannot
+// be overwritten. Make sure to handle those particular registers
+// with care!
+//template <class TC>
+void
+ISA::setMiscReg(int reg_idx, const MiscReg &val,
+ ThreadContext *tc, ThreadID tid)
+{
+ int misc_reg = reg_idx - Ctrl_Base_DepTag;
+ int reg_sel = (bankType[misc_reg] == perThreadContext)
+ ? tid : getVPENum(tid);
+
+ DPRINTF(MipsPRA,
+ "[tid:%i]: Setting CP0 Register:%u "
+ "Select:%u (%s) to %#x, with effect.\n",
+ tid, misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg], val);
+
+ MiscReg cp0_val = filterCP0Write(misc_reg, reg_sel, val);
+
+ miscRegFile[misc_reg][reg_sel] = cp0_val;
+
+ scheduleCP0Update(1);
+}
+
+/**
+ * This method doesn't need to adjust the Control Register Offset
+ * since it has already been done in the calling method
+ * (setRegWithEffect)
+*/
MiscReg
-ISA::readMiscReg(int miscReg, ThreadContext *tc)
+ISA::filterCP0Write(int misc_reg, int reg_sel, const MiscReg &val)
+{
+ MiscReg retVal = val;
+
+ // Mask off read-only regions
+ retVal &= miscRegFile_WriteMask[misc_reg][reg_sel];
+ MiscReg curVal = miscRegFile[misc_reg][reg_sel];
+ // Mask off current alue with inverse mask (clear writeable bits)
+ curVal &= (~miscRegFile_WriteMask[misc_reg][reg_sel]);
+ retVal |= curVal; // Combine the two
+ DPRINTF(MipsPRA,
+ "filterCP0Write: Mask: %lx, Inverse Mask: %lx, write Val: %x, "
+ "current val: %lx, written val: %x\n",
+ miscRegFile_WriteMask[misc_reg][reg_sel],
+ ~miscRegFile_WriteMask[misc_reg][reg_sel],
+ val, miscRegFile[misc_reg][reg_sel], retVal);
+ return retVal;
+}
+
+void
+ISA::scheduleCP0Update(int delay)
{
- return miscRegFile.readReg(miscReg, tc);
+ if (!cp0Updated) {
+ cp0Updated = true;
+
+ //schedule UPDATE
+ CP0Event *cp0_event = new CP0Event(this, cpu, UpdateCP0);
+ cpu->schedule(cp0_event, curTick + cpu->ticks(delay));
+ }
}
void
-ISA::setMiscRegNoEffect(int miscReg, const MiscReg val)
+ISA::updateCPU()
{
- miscRegFile.setRegNoEffect(miscReg, val);
+ ///////////////////////////////////////////////////////////////////
+ //
+ // EVALUATE CP0 STATE FOR MIPS MT
+ //
+ ///////////////////////////////////////////////////////////////////
+ unsigned mvp_conf0 = readMiscRegNoEffect(MVPConf0);
+ ThreadID num_threads = bits(mvp_conf0, MVPC0_PTC_HI, MVPC0_PTC_LO) + 1;
+
+ for (ThreadID tid = 0; tid < num_threads; tid++) {
+ MiscReg tc_status = readMiscRegNoEffect(TCStatus, tid);
+ MiscReg tc_halt = readMiscRegNoEffect(TCHalt, tid);
+
+ //@todo: add vpe/mt check here thru mvpcontrol & vpecontrol regs
+ if (bits(tc_halt, TCH_H) == 1 || bits(tc_status, TCS_A) == 0) {
+ haltThread(cpu->getContext(tid));
+ } else if (bits(tc_halt, TCH_H) == 0 && bits(tc_status, TCS_A) == 1) {
+ restoreThread(cpu->getContext(tid));
+ }
+ }
+
+ num_threads = bits(mvp_conf0, MVPC0_PTC_HI, MVPC0_PTC_LO) + 1;
+
+ // Toggle update flag after we finished updating
+ cp0Updated = false;
}
+ISA::CP0Event::CP0Event(CP0 *_cp0, BaseCPU *_cpu, CP0EventType e_type)
+ : Event(CPU_Tick_Pri), cp0(_cp0), cpu(_cpu), cp0EventType(e_type)
+{ }
+
void
-ISA::setMiscReg(int miscReg, const MiscReg val, ThreadContext *tc)
+ISA::CP0Event::process()
+{
+ switch (cp0EventType)
+ {
+ case UpdateCP0:
+ cp0->updateCPU();
+ break;
+ }
+
+ //cp0EventRemoveList.push(this);
+}
+
+const char *
+ISA::CP0Event::description() const
{
- miscRegFile.setReg(miscReg, val, tc);
+ return "Coprocessor-0 event";
}
void
-ISA::serialize(std::ostream &os)
+ISA::CP0Event::scheduleEvent(int delay)
{
- //miscRegFile.serialize(os);
+ cpu->reschedule(this, curTick + cpu->ticks(delay), true);
}
void
-ISA::unserialize(Checkpoint *cp, const std::string §ion)
+ISA::CP0Event::unscheduleEvent()
{
- //miscRegFile.unserialize(cp, section);
+ if (scheduled())
+ squash();
}
}
#ifndef __ARCH_MIPS_ISA_HH__
#define __ARCH_MIPS_ISA_HH__
-#include "arch/mips/misc_regfile.hh"
+#include <string>
+#include <queue>
+#include <vector>
+
+#include "arch/mips/registers.hh"
#include "arch/mips/types.hh"
+#include "sim/eventq.hh"
+#include "sim/faults.hh"
+class BaseCPU;
class Checkpoint;
class EventManager;
+class ThreadContext;
namespace MipsISA
{
class ISA
{
+ public:
+ // The MIPS name for this file is CP0 or Coprocessor 0
+ typedef ISA CP0;
+
protected:
- MiscRegFile miscRegFile;
+ enum BankType {
+ perProcessor,
+ perThreadContext,
+ perVirtProcessor
+ };
+
+ std::vector<std::vector<MiscReg> > miscRegFile;
+ std::vector<std::vector<MiscReg> > miscRegFile_WriteMask;
+ std::vector<BankType> bankType;
+
+ BaseCPU *cpu;
public:
+ ISA();
+ ISA(BaseCPU *_cpu);
- void expandForMultithreading(ThreadID num_threads, unsigned num_vpes)
- {
- miscRegFile.expandForMultithreading(num_threads, num_vpes);
- }
+ void init();
+
+ void clear(unsigned tid_or_vpn = 0);
void reset(std::string core_name, ThreadID num_threads,
- unsigned num_vpes, BaseCPU *_cpu)
+ unsigned num_vpes, BaseCPU *_cpu);
+
+ void expandForMultithreading(ThreadID num_threads, unsigned num_vpes);
+
+ unsigned getVPENum(ThreadID tid);
+
+ //////////////////////////////////////////////////////////
+ //
+ // READ/WRITE CP0 STATE
+ //
+ //
+ //////////////////////////////////////////////////////////
+ //@TODO: MIPS MT's register view automatically connects
+ // Status to TCStatus depending on current thread
+ void updateCP0ReadView(int misc_reg, ThreadID tid) { }
+ MiscReg readMiscRegNoEffect(int misc_reg, ThreadID tid = 0);
+
+ //template <class TC>
+ MiscReg readMiscReg(int misc_reg,
+ ThreadContext *tc, ThreadID tid = 0);
+
+ MiscReg filterCP0Write(int misc_reg, int reg_sel, const MiscReg &val);
+ void setRegMask(int misc_reg, const MiscReg &val, ThreadID tid = 0);
+ void setMiscRegNoEffect(int misc_reg, const MiscReg &val,
+ ThreadID tid = 0);
+
+ //template <class TC>
+ void setMiscReg(int misc_reg, const MiscReg &val,
+ ThreadContext *tc, ThreadID tid = 0);
+
+ //////////////////////////////////////////////////////////
+ //
+ // DECLARE INTERFACE THAT WILL ALLOW A MiscRegFile (Cop0)
+ // TO SCHEDULE EVENTS
+ //
+ //////////////////////////////////////////////////////////
+
+ // Flag that is set when CP0 state has been written to.
+ bool cp0Updated;
+
+ // Enumerated List of CP0 Event Types
+ enum CP0EventType {
+ UpdateCP0
+ };
+
+ // Declare A CP0Event Class for scheduling
+ class CP0Event : public Event
{
- miscRegFile.reset(core_name, num_threads, num_vpes, _cpu);
- }
+ protected:
+ ISA::CP0 *cp0;
+ BaseCPU *cpu;
+ CP0EventType cp0EventType;
+ Fault fault;
+
+ public:
+ /** Constructs a CP0 event. */
+ CP0Event(CP0 *_cp0, BaseCPU *_cpu, CP0EventType e_type);
+
+ /** Process this event. */
+ virtual void process();
+
+ /** Returns the description of this event. */
+ const char *description() const;
+
+ /** Schedule This Event */
+ void scheduleEvent(int delay);
- void clear();
+ /** Unschedule This Event */
+ void unscheduleEvent();
+ };
- MiscReg readMiscRegNoEffect(int miscReg);
- MiscReg readMiscReg(int miscReg, ThreadContext *tc);
+ // Schedule a CP0 Update Event
+ void scheduleCP0Update(int delay = 0);
- void setMiscRegNoEffect(int miscReg, const MiscReg val);
- void setMiscReg(int miscReg, const MiscReg val,
- ThreadContext *tc);
+ // If any changes have been made, then check the state for changes
+ // and if necessary alert the CPU
+ void updateCPU();
+
+ // Keep a List of CPU Events that need to be deallocated
+ std::queue<CP0Event*> cp0EventRemoveList;
+
+ static std::string miscRegNames[NumMiscRegs];
+
+ public:
int
flattenIntIndex(int reg)
void serialize(std::ostream &os);
void unserialize(Checkpoint *cp, const std::string §ion);
-
- ISA()
- {
- clear();
- }
};
}
#include "arch/mips/isa_traits.hh"
#include "arch/mips/utility.hh"
#include "arch/mips/dsp.hh"
+#include "arch/mips/mt.hh"
#include "arch/mips/pra_constants.hh"
#include "arch/mips/dt_constants.hh"
#include "arch/mips/mt_constants.hh"
+++ /dev/null
-/*
- * Copyright (c) 2006 The Regents of The University of Michigan
- * Copyright (c) 2007 MIPS Technologies, Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met: redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer;
- * redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution;
- * neither the name of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Authors: Korey Sewell
- * Jaidev Patwardhan
- */
-
-#include "base/bitfield.hh"
-
-#include "arch/mips/misc_regfile.hh"
-#include "arch/mips/mt_constants.hh"
-#include "arch/mips/pra_constants.hh"
-
-#include "cpu/thread_context.hh"
-#include "cpu/base.hh"
-#include "cpu/exetrace.hh"
-
-//#include "params/DerivO3CPU.hh"
-
-using namespace std;
-using namespace MipsISA;
-
-std::string MiscRegFile::miscRegNames[NumMiscRegs] =
-{
- "Index", "MVPControl", "MVPConf0", "MVPConf1", "", "", "", "",
- "Random", "VPEControl", "VPEConf0", "VPEConf1",
- "YQMask", "VPESchedule", "VPEScheFBack", "VPEOpt",
- "EntryLo0", "TCStatus", "TCBind", "TCRestart",
- "TCHalt", "TCContext", "TCSchedule", "TCScheFBack",
- "EntryLo1", "", "", "", "", "", "", "",
- "Context", "ContextConfig", "", "", "", "", "", "",
- "PageMask", "PageGrain", "", "", "", "", "", "",
- "Wired", "SRSConf0", "SRCConf1", "SRSConf2",
- "SRSConf3", "SRSConf4", "", "",
- "HWREna", "", "", "", "", "", "", "",
- "BadVAddr", "", "", "", "", "", "", "",
- "Count", "", "", "", "", "", "", "",
- "EntryHi", "", "", "", "", "", "", "",
- "Compare", "", "", "", "", "", "", "",
- "Status", "IntCtl", "SRSCtl", "SRSMap", "", "", "", "",
- "Cause", "", "", "", "", "", "", "",
- "EPC", "", "", "", "", "", "", "",
- "PRId", "EBase", "", "", "", "", "", "",
- "Config", "Config1", "Config2", "Config3", "", "", "", "",
- "LLAddr", "", "", "", "", "", "", "",
- "WatchLo0", "WatchLo1", "WatchLo2", "WatchLo3",
- "WatchLo4", "WatchLo5", "WatchLo6", "WatchLo7",
- "WatchHi0", "WatchHi1", "WatchHi2", "WatchHi3",
- "WatchHi4", "WatchHi5", "WatchHi6", "WatchHi7",
- "XCContext64", "", "", "", "", "", "", "",
- "", "", "", "", "", "", "", "",
- "", "", "", "", "", "", "", "",
- "Debug", "TraceControl1", "TraceControl2", "UserTraceData",
- "TraceBPC", "", "", "",
- "DEPC", "", "", "", "", "", "", "",
- "PerfCnt0", "PerfCnt1", "PerfCnt2", "PerfCnt3",
- "PerfCnt4", "PerfCnt5", "PerfCnt6", "PerfCnt7",
- "ErrCtl", "", "", "", "", "", "", "",
- "CacheErr0", "CacheErr1", "CacheErr2", "CacheErr3", "", "", "", "",
- "TagLo0", "DataLo1", "TagLo2", "DataLo3",
- "TagLo4", "DataLo5", "TagLo6", "DataLo7",
- "TagHi0", "DataHi1", "TagHi2", "DataHi3",
- "TagHi4", "DataHi5", "TagHi6", "DataHi7",
- "ErrorEPC", "", "", "", "", "", "", "",
- "DESAVE", "", "", "", "", "", "", "",
- "LLFlag"
-};
-
-MiscRegFile::MiscRegFile()
-{
- init();
-}
-
-MiscRegFile::MiscRegFile(BaseCPU *_cpu)
-{
- cpu = _cpu;
- init();
-}
-
-void
-MiscRegFile::init()
-{
- miscRegFile.resize(NumMiscRegs);
- bankType.resize(NumMiscRegs);
-
- for (int i=0; i < NumMiscRegs; i++) {
- miscRegFile[i].resize(1);
- bankType[i] = perProcessor;
- }
-
- miscRegFile_WriteMask.resize(NumMiscRegs);
-
- for (int i=0; i < NumMiscRegs; i++) {
- miscRegFile_WriteMask[i].push_back(0);
- }
- clear(0);
-}
-
-void
-MiscRegFile::clear(unsigned tid_or_vpn)
-{
- for(int i = 0; i < NumMiscRegs; i++) {
- miscRegFile[i][tid_or_vpn] = 0;
- miscRegFile_WriteMask[i][tid_or_vpn] = (long unsigned int)(-1);
- }
-}
-
-void
-MiscRegFile::expandForMultithreading(ThreadID num_threads, unsigned num_vpes)
-{
- // Initialize all Per-VPE regs
- uint32_t per_vpe_regs[] = { VPEControl, VPEConf0, VPEConf1, YQMask,
- VPESchedule, VPEScheFBack, VPEOpt, SRSConf0,
- SRSConf1, SRSConf2, SRSConf3, SRSConf4,
- EBase
- };
- uint32_t num_vpe_regs = sizeof(per_vpe_regs) / 4;
- for (int i = 0; i < num_vpe_regs; i++) {
- if (num_vpes > 1) {
- miscRegFile[per_vpe_regs[i]].resize(num_vpes);
- }
- bankType[per_vpe_regs[i]] = perVirtProcessor;
- }
-
- // Initialize all Per-TC regs
- uint32_t per_tc_regs[] = { Status, TCStatus, TCBind, TCRestart, TCHalt,
- TCContext, TCSchedule, TCScheFBack, Debug,
- LLAddr
- };
- uint32_t num_tc_regs = sizeof(per_tc_regs) / 4;
-
- for (int i = 0; i < num_tc_regs; i++) {
- miscRegFile[per_tc_regs[i]].resize(num_threads);
- bankType[per_tc_regs[i]] = perThreadContext;
- }
-
-
- if (num_vpes > 1) {
- for (int i=1; i < num_vpes; i++) {
- clear(i);
- }
- }
-
-}
-//@TODO: Use MIPS STYLE CONSTANTS (e.g. TCHALT_H instead of TCH_H)
-void
-MiscRegFile::reset(std::string core_name, ThreadID num_threads,
- unsigned num_vpes, BaseCPU *_cpu)
-{
- DPRINTF(MipsPRA, "Resetting CP0 State with %i TCs and %i VPEs\n",
- num_threads, num_vpes);
- cpu = _cpu;
-
- MipsISA::CoreSpecific &cp = cpu->coreParams;
-
- // Do Default CP0 initialization HERE
-
- // Do Initialization for MT cores here (eventually use
- // core_name parameter to toggle this initialization)
- // ===================================================
- DPRINTF(MipsPRA, "Initializing CP0 State.... ");
-
- MiscReg ProcID = readRegNoEffect(PRId);
- replaceBits(ProcID,PRIdCoOp_HI,PRIdCoOp_LO,cp.CP0_PRId_CompanyOptions);
- replaceBits(ProcID,PRIdCoID_HI,PRIdCoID_LO,cp.CP0_PRId_CompanyID);
- replaceBits(ProcID,PRIdProc_ID_HI,PRIdProc_ID_LO,cp.CP0_PRId_ProcessorID);
- replaceBits(ProcID,PRIdRev_HI,PRIdRev_LO,cp.CP0_PRId_Revision);
- setRegNoEffect(PRId,ProcID);
- // Now, create Write Mask for ProcID register
- MiscReg ProcID_Mask = 0; // Read-Only register
- replaceBits(ProcID_Mask,0,32,0);
- setRegMask(PRId,ProcID_Mask);
-
- // Config
- MiscReg cfg = readRegNoEffect(Config);
- replaceBits(cfg, Config_BE_HI, Config_BE_LO, cp.CP0_Config_BE);
- replaceBits(cfg, Config_AT_HI, Config_AT_LO, cp.CP0_Config_AT);
- replaceBits(cfg, Config_AR_HI, Config_AR_LO, cp.CP0_Config_AR);
- replaceBits(cfg, Config_MT_HI, Config_MT_LO, cp.CP0_Config_MT);
- replaceBits(cfg, Config_VI_HI, Config_VI_LO, cp.CP0_Config_VI);
- replaceBits(cfg, Config_M, 1);
- setRegNoEffect(Config, cfg);
- // Now, create Write Mask for Config register
- MiscReg cfg_Mask = 0x7FFF0007;
- replaceBits(cfg_Mask,0,32,0);
- setRegMask(Config,cfg_Mask);
-
- // Config1
- MiscReg cfg1 = readRegNoEffect(Config1);
- replaceBits(cfg1, Config1_MMUSize_HI, Config1_MMUSize_LO,
- cp.CP0_Config1_MMU);
- replaceBits(cfg1, Config1_IS_HI, Config1_IS_LO, cp.CP0_Config1_IS);
- replaceBits(cfg1, Config1_IL_HI, Config1_IL_LO, cp.CP0_Config1_IL);
- replaceBits(cfg1, Config1_IA_HI, Config1_IA_LO, cp.CP0_Config1_IA);
- replaceBits(cfg1, Config1_DS_HI, Config1_DS_LO, cp.CP0_Config1_DS);
- replaceBits(cfg1, Config1_DL_HI, Config1_DL_LO, cp.CP0_Config1_DL);
- replaceBits(cfg1, Config1_DA_HI, Config1_DA_LO, cp.CP0_Config1_DA);
- replaceBits(cfg1, Config1_FP_HI, Config1_FP_LO, cp.CP0_Config1_FP);
- replaceBits(cfg1, Config1_EP_HI, Config1_EP_LO, cp.CP0_Config1_EP);
- replaceBits(cfg1, Config1_WR_HI, Config1_WR_LO, cp.CP0_Config1_WR);
- replaceBits(cfg1, Config1_MD_HI, Config1_MD_LO, cp.CP0_Config1_MD);
- replaceBits(cfg1, Config1_C2_HI, Config1_C2_LO, cp.CP0_Config1_C2);
- replaceBits(cfg1, Config1_PC_HI, Config1_PC_LO, cp.CP0_Config1_PC);
- replaceBits(cfg1, Config1_M, cp.CP0_Config1_M);
- setRegNoEffect(Config1, cfg1);
- // Now, create Write Mask for Config register
- MiscReg cfg1_Mask = 0; // Read Only Register
- replaceBits(cfg1_Mask,0,32,0);
- setRegMask(Config1,cfg1_Mask);
-
- // Config2
- MiscReg cfg2 = readRegNoEffect(Config2);
- replaceBits(cfg2, Config2_TU_HI, Config2_TU_LO, cp.CP0_Config2_TU);
- replaceBits(cfg2, Config2_TS_HI, Config2_TS_LO, cp.CP0_Config2_TS);
- replaceBits(cfg2, Config2_TL_HI, Config2_TL_LO, cp.CP0_Config2_TL);
- replaceBits(cfg2, Config2_TA_HI, Config2_TA_LO, cp.CP0_Config2_TA);
- replaceBits(cfg2, Config2_SU_HI, Config2_SU_LO, cp.CP0_Config2_SU);
- replaceBits(cfg2, Config2_SS_HI, Config2_SS_LO, cp.CP0_Config2_SS);
- replaceBits(cfg2, Config2_SL_HI, Config2_SL_LO, cp.CP0_Config2_SL);
- replaceBits(cfg2, Config2_SA_HI, Config2_SA_LO, cp.CP0_Config2_SA);
- replaceBits(cfg2, Config2_M, cp.CP0_Config2_M);
- setRegNoEffect(Config2, cfg2);
- // Now, create Write Mask for Config register
- MiscReg cfg2_Mask = 0x7000F000; // Read Only Register
- replaceBits(cfg2_Mask,0,32,0);
- setRegMask(Config2,cfg2_Mask);
-
- // Config3
- MiscReg cfg3 = readRegNoEffect(Config3);
- replaceBits(cfg3, Config3_DSPP_HI, Config3_DSPP_LO, cp.CP0_Config3_DSPP);
- replaceBits(cfg3, Config3_LPA_HI, Config3_LPA_LO, cp.CP0_Config3_LPA);
- replaceBits(cfg3, Config3_VEIC_HI, Config3_VEIC_LO, cp.CP0_Config3_VEIC);
- replaceBits(cfg3, Config3_VINT_HI, Config3_VINT_LO, cp.CP0_Config3_VInt);
- replaceBits(cfg3, Config3_SP_HI, Config3_SP_LO, cp.CP0_Config3_SP);
- replaceBits(cfg3, Config3_MT_HI, Config3_MT_LO, cp.CP0_Config3_MT);
- replaceBits(cfg3, Config3_SM_HI, Config3_SM_LO, cp.CP0_Config3_SM);
- replaceBits(cfg3, Config3_TL_HI, Config3_TL_LO, cp.CP0_Config3_TL);
- setRegNoEffect(Config3, cfg3);
- // Now, create Write Mask for Config register
- MiscReg cfg3_Mask = 0; // Read Only Register
- replaceBits(cfg3_Mask,0,32,0);
- setRegMask(Config3,cfg3_Mask);
-
- // EBase - CPUNum
- MiscReg EB = readRegNoEffect(EBase);
- replaceBits(EB, EBase_CPUNum_HI, EBase_CPUNum_LO, cp.CP0_EBase_CPUNum);
- replaceBits(EB, 31, 31, 1);
- setRegNoEffect(EBase, EB);
- // Now, create Write Mask for Config register
- MiscReg EB_Mask = 0x3FFFF000;// Except Exception Base, the
- // entire register is read only
- replaceBits(EB_Mask,0,32,0);
- setRegMask(EBase,EB_Mask);
-
- // SRS Control - HSS (Highest Shadow Set)
- MiscReg SC = readRegNoEffect(SRSCtl);
- replaceBits(SC, SRSCtl_HSS_HI,SRSCtl_HSS_LO,cp.CP0_SrsCtl_HSS);
- setRegNoEffect(SRSCtl, SC);
- // Now, create Write Mask for the SRS Ctl register
- MiscReg SC_Mask = 0x0000F3C0;
- replaceBits(SC_Mask,0,32,0);
- setRegMask(SRSCtl,SC_Mask);
-
- // IntCtl - IPTI, IPPCI
- MiscReg IC = readRegNoEffect(IntCtl);
- replaceBits(IC, IntCtl_IPTI_HI,IntCtl_IPTI_LO,cp.CP0_IntCtl_IPTI);
- replaceBits(IC, IntCtl_IPPCI_HI,IntCtl_IPPCI_LO,cp.CP0_IntCtl_IPPCI);
- setRegNoEffect(IntCtl, IC);
- // Now, create Write Mask for the IntCtl register
- MiscReg IC_Mask = 0x000003E0;
- replaceBits(IC_Mask,0,32,0);
- setRegMask(IntCtl,IC_Mask);
-
- // Watch Hi - M - FIXME (More than 1 Watch register)
- MiscReg WHi = readRegNoEffect(WatchHi0);
- replaceBits(WHi, WatchHi_M, cp.CP0_WatchHi_M);
- setRegNoEffect(WatchHi0, WHi);
- // Now, create Write Mask for the IntCtl register
- MiscReg wh_Mask = 0x7FFF0FFF;
- replaceBits(wh_Mask,0,32,0);
- setRegMask(WatchHi0,wh_Mask);
-
- // Perf Ctr - M - FIXME (More than 1 PerfCnt Pair)
- MiscReg PCtr = readRegNoEffect(PerfCnt0);
- replaceBits(PCtr, PerfCntCtl_M, cp.CP0_PerfCtr_M);
- replaceBits(PCtr, PerfCntCtl_W, cp.CP0_PerfCtr_W);
- setRegNoEffect(PerfCnt0, PCtr);
- // Now, create Write Mask for the IntCtl register
- MiscReg pc_Mask = 0x00007FF;
- replaceBits(pc_Mask,0,32,0);
- setRegMask(PerfCnt0,pc_Mask);
-
- // Random
- MiscReg random = readRegNoEffect(CP0_Random);
- random = 63;
- setRegNoEffect(CP0_Random, random);
- // Now, create Write Mask for the IntCtl register
- MiscReg random_Mask = 0;
- replaceBits(random_Mask,0,32,0);
- setRegMask(CP0_Random,random_Mask);
-
- // PageGrain
- MiscReg pagegrain = readRegNoEffect(PageGrain);
- replaceBits(pagegrain,PageGrain_ESP,cp.CP0_Config3_SP);
- setRegNoEffect(PageGrain, pagegrain);
- // Now, create Write Mask for the IntCtl register
- MiscReg pg_Mask = 0x10000000;
- replaceBits(pg_Mask,0,32,0);
- setRegMask(PageGrain,pg_Mask);
-
- // Status
- MiscReg stat = readRegNoEffect(Status);
- // Only CU0 and IE are modified on a reset - everything else needs
- // to be controlled on a per CPU model basis
-
- // Enable CP0 on reset
- // replaceBits(stat, Status_CU0_HI,Status_CU0_LO, 1);
-
- // Enable ERL bit on a reset
- replaceBits(stat, Status_ERL_HI, Status_ERL_LO, 1);
-
- // Enable BEV bit on a reset
- replaceBits(stat, Status_BEV_HI, Status_BEV_LO, 1);
-
- setRegNoEffect(Status, stat);
- // Now, create Write Mask for the Status register
- MiscReg stat_Mask = 0xFF78FF17;
- replaceBits(stat_Mask,0,32,0);
- setRegMask(Status,stat_Mask);
-
-
- // MVPConf0
- MiscReg mvp_conf0 = readRegNoEffect(MVPConf0);
- replaceBits(mvp_conf0, MVPC0_TCA, 1);
- replaceBits(mvp_conf0, MVPC0_PVPE_HI, MVPC0_PVPE_LO, num_vpes - 1);
- replaceBits(mvp_conf0, MVPC0_PTC_HI, MVPC0_PTC_LO, num_threads - 1);
- setRegNoEffect(MVPConf0, mvp_conf0);
-
- // VPEConf0
- MiscReg vpe_conf0 = readRegNoEffect(VPEConf0);
- replaceBits(vpe_conf0, VPEC0_MVP, 1);
- setRegNoEffect(VPEConf0, vpe_conf0);
-
- // TCBind
- for (ThreadID tid = 0; tid < num_threads; tid++) {
- MiscReg tc_bind = readRegNoEffect(TCBind, tid);
- replaceBits(tc_bind, TCB_CUR_TC_HI, TCB_CUR_TC_LO, tid);
- setRegNoEffect(TCBind, tc_bind, tid);
- }
- // TCHalt
- MiscReg tc_halt = readRegNoEffect(TCHalt);
- replaceBits(tc_halt, TCH_H, 0);
- setRegNoEffect(TCHalt, tc_halt);
- /*for (ThreadID tid = 1; tid < num_threads; tid++) {
- // Set TCHalt Halt bit to 1 for all other threads
- tc_halt = readRegNoEffect(TCHalt, tid);
- replaceBits(tc_halt, TCH_H, 1);
- setReg(TCHalt, tc_halt, tid);
- }*/
-
- // TCStatus
- // Set TCStatus Activated to 1 for the initial thread that is running
- MiscReg tc_status = readRegNoEffect(TCStatus);
- replaceBits(tc_status, TCS_A, 1);
- setRegNoEffect(TCStatus, tc_status);
-
- // Set Dynamically Allocatable bit to 1 for all other threads
- for (ThreadID tid = 1; tid < num_threads; tid++) {
- tc_status = readRegNoEffect(TCStatus, tid);
- replaceBits(tc_status, TCSTATUS_DA, 1);
- setRegNoEffect(TCStatus, tc_status, tid);
- }
-
-
- MiscReg Mask = 0x7FFFFFFF;
-
- // Now, create Write Mask for the Index register
- replaceBits(Mask,0,32,0);
- setRegMask(Index,Mask);
-
- Mask = 0x3FFFFFFF;
- replaceBits(Mask,0,32,0);
- setRegMask(EntryLo0,Mask);
- setRegMask(EntryLo1,Mask);
-
- Mask = 0xFF800000;
- replaceBits(Mask,0,32,0);
- setRegMask(Context,Mask);
-
- Mask = 0x1FFFF800;
- replaceBits(Mask,0,32,0);
- setRegMask(PageMask,Mask);
-
- Mask = 0x0;
- replaceBits(Mask,0,32,0);
- setRegMask(BadVAddr,Mask);
- setRegMask(LLAddr,Mask);
-
- Mask = 0x08C00300;
- replaceBits(Mask,0,32,0);
- setRegMask(Cause,Mask);
-
-}
-
-inline unsigned
-MiscRegFile::getVPENum(ThreadID tid)
-{
- unsigned tc_bind = miscRegFile[TCBind - Ctrl_Base_DepTag][tid];
- return bits(tc_bind, TCB_CUR_VPE_HI, TCB_CUR_VPE_LO);
-}
-
-MiscReg
-MiscRegFile::readRegNoEffect(int reg_idx, ThreadID tid)
-{
- int misc_reg = reg_idx - Ctrl_Base_DepTag;
- unsigned reg_sel = (bankType[misc_reg] == perThreadContext)
- ? tid : getVPENum(tid);
- DPRINTF(MipsPRA, "Reading CP0 Register:%u Select:%u (%s) (%lx).\n",
- misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg],
- miscRegFile[misc_reg][reg_sel]);
- return miscRegFile[misc_reg][reg_sel];
-}
-
-//@TODO: MIPS MT's register view automatically connects
-// Status to TCStatus depending on current thread
-//template <class TC>
-MiscReg
-MiscRegFile::readReg(int reg_idx, ThreadContext *tc, ThreadID tid)
-{
- int misc_reg = reg_idx - Ctrl_Base_DepTag;
- unsigned reg_sel = (bankType[misc_reg] == perThreadContext)
- ? tid : getVPENum(tid);
- DPRINTF(MipsPRA,
- "Reading CP0 Register:%u Select:%u (%s) with effect (%lx).\n",
- misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg],
- miscRegFile[misc_reg][reg_sel]);
-
-
- switch (misc_reg)
- {
- default:
- return miscRegFile[misc_reg][reg_sel];
- }
-}
-
-void
-MiscRegFile::setRegNoEffect(int reg_idx, const MiscReg &val, ThreadID tid)
-{
- int misc_reg = reg_idx - Ctrl_Base_DepTag;
- unsigned reg_sel = (bankType[misc_reg] == perThreadContext)
- ? tid : getVPENum(tid);
- DPRINTF(MipsPRA,
- "[tid:%i]: Setting (direct set) CP0 Register:%u "
- "Select:%u (%s) to %#x.\n",
- tid, misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg], val);
-
- miscRegFile[misc_reg][reg_sel] = val;
-}
-void
-MiscRegFile::setRegMask(int reg_idx, const MiscReg &val, ThreadID tid)
-{
- // return;
- int misc_reg = reg_idx - Ctrl_Base_DepTag;
- unsigned reg_sel = (bankType[misc_reg] == perThreadContext)
- ? tid : getVPENum(tid);
- DPRINTF(MipsPRA,
- "[tid:%i]: Setting CP0 Register: %u Select: %u (%s) to %#x\n",
- tid, misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg], val);
- miscRegFile_WriteMask[misc_reg][reg_sel] = val;
-}
-
-// PROGRAMMER'S NOTES:
-// (1) Some CP0 Registers have fields that cannot
-// be overwritten. Make sure to handle those particular registers
-// with care!
-//template <class TC>
-void
-MiscRegFile::setReg(int reg_idx, const MiscReg &val,
- ThreadContext *tc, ThreadID tid)
-{
- int misc_reg = reg_idx - Ctrl_Base_DepTag;
- int reg_sel = (bankType[misc_reg] == perThreadContext)
- ? tid : getVPENum(tid);
-
- DPRINTF(MipsPRA,
- "[tid:%i]: Setting CP0 Register:%u "
- "Select:%u (%s) to %#x, with effect.\n",
- tid, misc_reg / 8, misc_reg % 8, miscRegNames[misc_reg], val);
-
- MiscReg cp0_val = filterCP0Write(misc_reg, reg_sel, val);
-
- miscRegFile[misc_reg][reg_sel] = cp0_val;
-
- scheduleCP0Update(1);
-}
-/**
- * This method doesn't need to adjust the Control Register Offset
- * since it has already been done in the calling method
- * (setRegWithEffect)
-*/
-MiscReg
-MiscRegFile::filterCP0Write(int misc_reg, int reg_sel, const MiscReg &val)
-{
- MiscReg retVal = val;
-
- // Mask off read-only regions
- retVal &= miscRegFile_WriteMask[misc_reg][reg_sel];
- MiscReg curVal = miscRegFile[misc_reg][reg_sel];
- // Mask off current alue with inverse mask (clear writeable bits)
- curVal &= (~miscRegFile_WriteMask[misc_reg][reg_sel]);
- retVal |= curVal; // Combine the two
- DPRINTF(MipsPRA,
- "filterCP0Write: Mask: %lx, Inverse Mask: %lx, write Val: %x, "
- "current val: %lx, written val: %x\n",
- miscRegFile_WriteMask[misc_reg][reg_sel],
- ~miscRegFile_WriteMask[misc_reg][reg_sel],
- val, miscRegFile[misc_reg][reg_sel], retVal);
- return retVal;
-}
-void
-MiscRegFile::scheduleCP0Update(int delay)
-{
- if (!cp0Updated) {
- cp0Updated = true;
-
- //schedule UPDATE
- CP0Event *cp0_event = new CP0Event(this, cpu, UpdateCP0);
- cpu->schedule(cp0_event, curTick + cpu->ticks(delay));
- }
-}
-
-void
-MiscRegFile::updateCPU()
-{
- ///////////////////////////////////////////////////////////////////
- //
- // EVALUATE CP0 STATE FOR MIPS MT
- //
- ///////////////////////////////////////////////////////////////////
- unsigned mvp_conf0 = readRegNoEffect(MVPConf0);
- ThreadID num_threads = bits(mvp_conf0, MVPC0_PTC_HI, MVPC0_PTC_LO) + 1;
-
- for (ThreadID tid = 0; tid < num_threads; tid++) {
- MiscReg tc_status = readRegNoEffect(TCStatus, tid);
- MiscReg tc_halt = readRegNoEffect(TCHalt, tid);
-
- //@todo: add vpe/mt check here thru mvpcontrol & vpecontrol regs
- if (bits(tc_halt, TCH_H) == 1 || bits(tc_status, TCS_A) == 0) {
- haltThread(cpu->getContext(tid));
- } else if (bits(tc_halt, TCH_H) == 0 && bits(tc_status, TCS_A) == 1) {
- restoreThread(cpu->getContext(tid));
- }
- }
-
- num_threads = bits(mvp_conf0, MVPC0_PTC_HI, MVPC0_PTC_LO) + 1;
-
- // Toggle update flag after we finished updating
- cp0Updated = false;
-}
-
-MiscRegFile::CP0Event::CP0Event(CP0 *_cp0, BaseCPU *_cpu, CP0EventType e_type)
- : Event(CPU_Tick_Pri), cp0(_cp0), cpu(_cpu), cp0EventType(e_type)
-{ }
-
-void
-MiscRegFile::CP0Event::process()
-{
- switch (cp0EventType)
- {
- case UpdateCP0:
- cp0->updateCPU();
- break;
- }
-
- //cp0EventRemoveList.push(this);
-}
-
-const char *
-MiscRegFile::CP0Event::description() const
-{
- return "Coprocessor-0 event";
-}
-
-void
-MiscRegFile::CP0Event::scheduleEvent(int delay)
-{
- cpu->reschedule(this, curTick + cpu->ticks(delay), true);
-}
-
-void
-MiscRegFile::CP0Event::unscheduleEvent()
-{
- if (scheduled())
- squash();
-}
+++ /dev/null
-/*
- * Copyright (c) 2006 The Regents of The University of Michigan
- * Copyright (c) 2007 MIPS Technologies, Inc.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met: redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer;
- * redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution;
- * neither the name of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * Authors: Korey Sewell
- * Jaidev Patwardhan
- */
-
-#ifndef __ARCH_MIPS_REGFILE_MISC_REGFILE_HH__
-#define __ARCH_MIPS_REGFILE_MISC_REGFILE_HH__
-
-#include "arch/mips/isa_traits.hh"
-#include "arch/mips/types.hh"
-#include "arch/mips/mt.hh"
-#include "arch/mips/mt_constants.hh"
-#include "base/bitfield.hh"
-#include "sim/eventq.hh"
-#include <queue>
-
-class Params;
-class BaseCPU;
-
-namespace MipsISA
-{
- class MiscRegFile {
- public:
- // The MIPS name for this file is CP0 or Coprocessor 0
- typedef MiscRegFile CP0;
-
- protected:
- enum BankType {
- perProcessor,
- perThreadContext,
- perVirtProcessor
- };
-
- std::vector<std::vector<MiscReg> > miscRegFile;
- std::vector<std::vector<MiscReg> > miscRegFile_WriteMask;
- std::vector<BankType> bankType;
-
- BaseCPU *cpu;
-
- public:
- MiscRegFile();
- MiscRegFile(BaseCPU *_cpu);
-
- void init();
-
- void clear(unsigned tid_or_vpn = 0);
-
- void reset(std::string core_name, ThreadID num_threads,
- unsigned num_vpes, BaseCPU *_cpu);
-
- void expandForMultithreading(ThreadID num_threads, unsigned num_vpes);
-
- unsigned getVPENum(ThreadID tid);
-
- //////////////////////////////////////////////////////////
- //
- // READ/WRITE CP0 STATE
- //
- //
- //////////////////////////////////////////////////////////
- //@TODO: MIPS MT's register view automatically connects
- // Status to TCStatus depending on current thread
- void updateCP0ReadView(int misc_reg, ThreadID tid) { }
- MiscReg readRegNoEffect(int misc_reg, ThreadID tid = 0);
-
- //template <class TC>
- MiscReg readReg(int misc_reg,
- ThreadContext *tc, ThreadID tid = 0);
-
- MiscReg filterCP0Write(int misc_reg, int reg_sel, const MiscReg &val);
- void setRegMask(int misc_reg, const MiscReg &val, ThreadID tid = 0);
- void setRegNoEffect(int misc_reg, const MiscReg &val,
- ThreadID tid = 0);
-
- //template <class TC>
- void setReg(int misc_reg, const MiscReg &val,
- ThreadContext *tc, ThreadID tid = 0);
-
- //////////////////////////////////////////////////////////
- //
- // DECLARE INTERFACE THAT WILL ALLOW A MiscRegFile (Cop0)
- // TO SCHEDULE EVENTS
- //
- //////////////////////////////////////////////////////////
-
- // Flag that is set when CP0 state has been written to.
- bool cp0Updated;
-
- // Enumerated List of CP0 Event Types
- enum CP0EventType {
- UpdateCP0
- };
-
- // Declare A CP0Event Class for scheduling
- class CP0Event : public Event
- {
- protected:
- MiscRegFile::CP0 *cp0;
- BaseCPU *cpu;
- CP0EventType cp0EventType;
- Fault fault;
-
- public:
- /** Constructs a CP0 event. */
- CP0Event(CP0 *_cp0, BaseCPU *_cpu, CP0EventType e_type);
-
- /** Process this event. */
- virtual void process();
-
- /** Returns the description of this event. */
- const char *description() const;
-
- /** Schedule This Event */
- void scheduleEvent(int delay);
-
- /** Unschedule This Event */
- void unscheduleEvent();
- };
-
- // Schedule a CP0 Update Event
- void scheduleCP0Update(int delay = 0);
-
- // If any changes have been made, then check the state for changes
- // and if necessary alert the CPU
- void updateCPU();
-
- // Keep a List of CPU Events that need to be deallocated
- std::queue<CP0Event*> cp0EventRemoveList;
-
- static std::string miscRegNames[NumMiscRegs];
- };
-} // namespace MipsISA
-
-#endif
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