mirror of
https://github.com/Atmosphere-NX/Atmosphere-libs.git
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94 lines
4.0 KiB
C++
94 lines
4.0 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <exosphere.hpp>
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#include "actmon_registers.hpp"
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namespace ams::actmon {
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namespace {
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constinit uintptr_t g_register_address = secmon::MemoryRegionPhysicalDeviceActivityMonitor.GetAddress();
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constinit InterruptHandler g_interrupt_handler = nullptr;
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}
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void SetRegisterAddress(uintptr_t address) {
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g_register_address = address;
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}
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void HandleInterrupt() {
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/* Get the registers. */
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const uintptr_t ACTMON = g_register_address;
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/* Disable the actmon interrupt. */
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reg::Write(ACTMON + ACTMON_COP_CTRL, ACTMON_REG_BITS_ENUM(COP_CTRL_ENB, DISABLE));
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/* Update the interrupt status. */
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reg::Write(ACTMON + ACTMON_COP_INTR_STATUS, reg::Read(ACTMON + ACTMON_COP_INTR_STATUS));
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/* Invoke the handler. */
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if (g_interrupt_handler != nullptr) {
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g_interrupt_handler();
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g_interrupt_handler = nullptr;
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}
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}
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void StartMonitoringBpmp(InterruptHandler handler) {
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/* Get the registers. */
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const uintptr_t ACTMON = g_register_address;
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/* Configure the activity monitor to poll once per microsecond. */
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reg::Write(ACTMON + ACTMON_GLB_PERIOD_CTRL, ACTMON_REG_BITS_ENUM (GLB_PERIOD_CTRL_SOURCE, USEC),
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ACTMON_REG_BITS_VALUE(GLB_PERIOD_CTRL_SAMPLE_PERIOD, 0));
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/* Configure the activity monitor to generate an interrupt the first time the event occurs. */
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reg::Write(ACTMON + ACTMON_COP_UPPER_WMARK, 0);
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/* Set the interrupt handler. */
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g_interrupt_handler = handler;
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/* Configure the activity monitor to generate events whenever the bpmp is woken up. */
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reg::Write(ACTMON + ACTMON_COP_CTRL, ACTMON_REG_BITS_ENUM (COP_CTRL_ENB, ENABLE),
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ACTMON_REG_BITS_ENUM (COP_CTRL_CONSECUTIVE_ABOVE_WMARK_EN, ENABLE),
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ACTMON_REG_BITS_ENUM (COP_CTRL_CONSECUTIVE_BELOW_WMARK_EN, DISABLE),
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ACTMON_REG_BITS_VALUE(COP_CTRL_ABOVE_WMARK_NUM, 0),
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ACTMON_REG_BITS_VALUE(COP_CTRL_BELOW_WMARK_NUM, 0),
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ACTMON_REG_BITS_ENUM (COP_CTRL_WHEN_OVERFLOW_EN, DISABLE),
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ACTMON_REG_BITS_ENUM (COP_CTRL_AVG_ABOVE_WMARK_EN, DISABLE),
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ACTMON_REG_BITS_ENUM (COP_CTRL_AVG_BELOW_WMARK_EN, DISABLE),
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ACTMON_REG_BITS_ENUM (COP_CTRL_AT_END_EN, DISABLE),
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ACTMON_REG_BITS_ENUM (COP_CTRL_ENB_PERIODIC, ENABLE));
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/* Read the activity monitor control register to make sure our configuration takes. */
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reg::Read(ACTMON + ACTMON_COP_CTRL);
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}
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void StopMonitoringBpmp() {
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/* Get the registers. */
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const uintptr_t ACTMON = g_register_address;
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/* Disable the actmon interrupt. */
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reg::Write(ACTMON + ACTMON_COP_CTRL, ACTMON_REG_BITS_ENUM(COP_CTRL_ENB, DISABLE));
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/* Update the interrupt status. */
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reg::Write(ACTMON + ACTMON_COP_INTR_STATUS, reg::Read(ACTMON + ACTMON_COP_INTR_STATUS));
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/* Clear the interrupt handler. */
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g_interrupt_handler = nullptr;
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}
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} |