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sergeykhbr |
/**
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* @file
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* @copyright Copyright 2016 GNSS Sensor Ltd. All right reserved.
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* @author Sergey Khabarov - sergeykhbr@gmail.com
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* @brief General Purpose Timers model.
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*/
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#include "api_core.h"
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#include "gptimers.h"
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namespace debugger {
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GPTimers::GPTimers(const char *name) : IService(name) {
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registerInterface(static_cast<IMemoryOperation *>(this));
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registerAttribute("BaseAddress", &baseAddress_);
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registerAttribute("Length", &length_);
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registerAttribute("IrqLine", &irqLine_);
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registerAttribute("IrqControl", &irqctrl_);
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registerAttribute("ClkSource", &clksrc_);
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baseAddress_.make_uint64(0);
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length_.make_uint64(0);
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irqLine_.make_uint64(0);
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irqctrl_.make_string("");
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clksrc_.make_string("");
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memset(®s_, 0, sizeof(regs_));
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}
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GPTimers::~GPTimers() {
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}
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void GPTimers::postinitService() {
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iclk_ = static_cast<IClock *>(
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RISCV_get_service_iface(clksrc_.to_string(), IFACE_CLOCK));
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if (!iclk_) {
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RISCV_error("Can't find IClock interface %s", clksrc_.to_string());
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}
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iwire_ = static_cast<IWire *>(
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RISCV_get_service_iface(irqctrl_.to_string(), IFACE_WIRE));
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if (!iwire_) {
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RISCV_error("Can't find IWire interface %s", irqctrl_.to_string());
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}
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}
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void GPTimers::b_transport(Axi4TransactionType *trans) {
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uint64_t mask = (length_.to_uint64() - 1);
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uint64_t off = ((trans->addr - getBaseAddress()) & mask) / 4;
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trans->response = MemResp_Valid;
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if (trans->action == MemAction_Write) {
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for (uint64_t i = 0; i < trans->xsize/4; i++) {
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if ((trans->wstrb & (0xf << 4*i)) == 0) {
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continue;
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}
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switch (off + i) {
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case 0:
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break;
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case 1:
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break;
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case 2:
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regs_.pending = trans->wpayload.b32[i];
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RISCV_info("Set pending = %08x", trans->wpayload.b32[i]);
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break;
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case 16 + 0:
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regs_.timer[0].control = trans->wpayload.b32[i];
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if (regs_.timer[0].control & TIMER_CONTROL_ENA) {
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iclk_->registerStepCallback(
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static_cast<IClockListener *>(this),
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iclk_->getStepCounter() + regs_.timer[0].init_value);
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}
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RISCV_info("Set [0].control = %08x", trans->wpayload.b32[i]);
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break;
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case 16 + 2:
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regs_.timer[0].cur_value &= ~0xFFFFFFFFLL;
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regs_.timer[0].cur_value |= trans->wpayload.b32[i];
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RISCV_info("Set cur_value[31:0] = %x", trans->wpayload.b32[i]);
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break;
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case 16 + 3:
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regs_.timer[0].cur_value &= ~0xFFFFFFFF00000000LL;
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regs_.timer[0].cur_value |=
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(static_cast<uint64_t>(trans->wpayload.b32[i]) << 32);
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RISCV_info("Set cur_value[63:32] = %x",
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trans->wpayload.b32[i]);
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break;
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case 16 + 4:
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regs_.timer[0].init_value &= ~0xFFFFFFFFLL;
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regs_.timer[0].init_value |= trans->wpayload.b32[i];
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RISCV_info("Set init_value[31:0] = %x",
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trans->wpayload.b32[i]);
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break;
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case 16 + 5:
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regs_.timer[0].init_value &= ~0xFFFFFFFF00000000LL;
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regs_.timer[0].init_value |=
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(static_cast<uint64_t>(trans->wpayload.b32[i]) << 32);
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RISCV_info("Set init_value[63:32] = %x",
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trans->wpayload.b32[i]);
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break;
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default:;
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}
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}
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} else {
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for (uint64_t i = 0; i < trans->xsize/4; i++) {
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switch (off + i) {
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case 0:
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regs_.highcnt = iclk_->getStepCounter();
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trans->rpayload.b32[i] = static_cast<uint32_t>(regs_.highcnt);
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break;
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case 1:
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regs_.highcnt = iclk_->getStepCounter();
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trans->rpayload.b32[i] =
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static_cast<uint32_t>(regs_.highcnt >> 32);
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break;
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case 16 + 0:
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trans->rpayload.b32[i] = regs_.timer[0].control;
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RISCV_info("Get [0].control = %08x", trans->rpayload.b32[i]);
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break;
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default:
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trans->rpayload.b32[i] = ~0;
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}
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}
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}
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}
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void GPTimers::stepCallback(uint64_t t) {
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iwire_->raiseLine(irqLine_.to_int());
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if (regs_.timer[0].control & TIMER_CONTROL_ENA) {
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iclk_->registerStepCallback(static_cast<IClockListener *>(this),
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t + regs_.timer[0].init_value);
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}
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}
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} // namespace debugger
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