// File: CMU-SAFARI[P]ramulator/src/LPDDR3.cpp
// Function: ramulator::LPDDR3::init_prereq()
void LPDDR3::init_prereq()
{
    // RD
    prereq[int(Level::Rank)][int(Command::RD)] = [] (DRAM<LPDDR3>* node, Command cmd, int id) {
        switch (int(node->state)) {
            case int(State::PowerUp): return Command::MAX;
            case int(State::ActPowerDown): return Command::PDX;
            case int(State::PrePowerDown): return Command::PDX;
            case int(State::SelfRefresh): return Command::SREFX;
            default: assert(false);
        }};
    prereq[int(Level::Bank)][int(Command::RD)] = [] (DRAM<LPDDR3>* node, Command cmd, int id) {
        switch (int(node->state)) {
            case int(State::Closed): return Command::ACT;
            case int(State::Opened):
                if (node->row_state.find(id) != node->row_state.end())
                    return cmd;
                return Command::PRE;
            default: assert(false);
        }};

    // WR
    prereq[int(Level::Rank)][int(Command::WR)] = prereq[int(Level::Rank)][int(Command::RD)];
    prereq[int(Level::Bank)][int(Command::WR)] = prereq[int(Level::Bank)][int(Command::RD)];

    // REF
    prereq[int(Level::Rank)][int(Command::REF)] = [] (DRAM<LPDDR3>* node, Command cmd, int id) {
        for (auto bank : node->children) {
            if (bank->state == State::Closed)
                continue;
            return Command::PRA;
        }
        return Command::REF;};

    // REFPB
    prereq[int(Level::Bank)][int(Command::REFPB)] = [] (DRAM<LPDDR3>* node, Command cmd, int id) {
      if (node->state == State::Closed) return Command::REFPB;
        else return Command::PRE;};

    // PD
    prereq[int(Level::Rank)][int(Command::PD)] = [] (DRAM<LPDDR3>* node, Command cmd, int id) {
        switch (int(node->state)) {
            case int(State::PowerUp): return Command::PD;
            case int(State::ActPowerDown): return Command::PD;
            case int(State::PrePowerDown): return Command::PD;
            case int(State::SelfRefresh): return Command::SREFX;
            default: assert(false);
        }};

    // SR
    prereq[int(Level::Rank)][int(Command::SREF)] = [] (DRAM<LPDDR3>* node, Command cmd, int id) {
        switch (int(node->state)) {
            case int(State::PowerUp): return Command::SREF;
            case int(State::ActPowerDown): return Command::PDX;
            case int(State::PrePowerDown): return Command::PDX;
            case int(State::SelfRefresh): return Command::SREF;
            default: assert(false);
        }};
}

// Assembly:
pushq %rbp
movq %rsp, %rbp
subq $0x20, %rsp
movq %rdi, -0x8(%rbp)
movq -0x8(%rbp), %rdi
movq %rdi, -0x18(%rbp)
addq $0x200, %rdi            # imm = 0x200
addq $0x1a0, %rdi            # imm = 0x1A0
addq $0x60, %rdi
leaq -0x9(%rbp), %rsi
callq 0x1d1330
movq -0x18(%rbp), %rdi
addq $0x200, %rdi            # imm = 0x200
addq $0x340, %rdi            # imm = 0x340
addq $0x60, %rdi
leaq -0xa(%rbp), %rsi
callq 0x1d1380
movq -0x18(%rbp), %rdi
movq %rdi, %rsi
addq $0x200, %rsi            # imm = 0x200
addq $0x1a0, %rsi            # imm = 0x1A0
addq $0x60, %rsi
addq $0x200, %rdi            # imm = 0x200
addq $0x1a0, %rdi            # imm = 0x1A0
addq $0x80, %rdi
callq 0x1d7260
movq -0x18(%rbp), %rdi
movq %rdi, %rsi
addq $0x200, %rsi            # imm = 0x200
addq $0x340, %rsi            # imm = 0x340
addq $0x60, %rsi
addq $0x200, %rdi            # imm = 0x200
addq $0x340, %rdi            # imm = 0x340
addq $0x80, %rdi
callq 0x1d7260
movq -0x18(%rbp), %rdi
addq $0x200, %rdi            # imm = 0x200
addq $0x1a0, %rdi            # imm = 0x1A0
addq $0xe0, %rdi
leaq -0xb(%rbp), %rsi
callq 0x1d13d0
movq -0x18(%rbp), %rdi
addq $0x200, %rdi            # imm = 0x200
addq $0x340, %rdi            # imm = 0x340
addq $0x100, %rdi            # imm = 0x100
leaq -0xc(%rbp), %rsi
callq 0x1d1420
movq -0x18(%rbp), %rdi
addq $0x200, %rdi            # imm = 0x200
addq $0x1a0, %rdi            # imm = 0x1A0
addq $0x120, %rdi            # imm = 0x120
leaq -0xd(%rbp), %rsi
callq 0x1d1470
movq -0x18(%rbp), %rdi
addq $0x200, %rdi            # imm = 0x200
addq $0x1a0, %rdi            # imm = 0x1A0
addq $0x160, %rdi            # imm = 0x160
leaq -0xe(%rbp), %rsi
callq 0x1d14c0
addq $0x20, %rsp
popq %rbp
retq
nopw %cs:(%rax,%rax)