| /* |
| * Copyright (c) 2019, NVIDIA CORPORATION. All rights reserved. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <arch.h> |
| #include <arch_helpers.h> |
| #include <assert.h> |
| #include <common/bl_common.h> |
| #include <lib/el3_runtime/context_mgmt.h> |
| #include <common/debug.h> |
| #include <errno.h> |
| #include <mce.h> |
| #include <memctrl.h> |
| #include <common/runtime_svc.h> |
| #include <tegra_private.h> |
| #include <tegra_platform.h> |
| #include <stdbool.h> |
| |
| extern uint32_t tegra186_system_powerdn_state; |
| |
| extern bool tegra_fake_system_suspend; |
| |
| /******************************************************************************* |
| * Tegra186 SiP SMCs |
| ******************************************************************************/ |
| #define TEGRA_SIP_SYSTEM_SHUTDOWN_STATE 0xC2FFFE01 |
| #define TEGRA_SIP_GET_ACTMON_CLK_COUNTERS 0xC2FFFE02 |
| #define TEGRA_SIP_ENABLE_FAKE_SYSTEM_SUSPEND 0xC2FFFE03 |
| #define TEGRA_SIP_MCE_CMD_ENTER_CSTATE 0xC2FFFF00 |
| #define TEGRA_SIP_MCE_CMD_UPDATE_CSTATE_INFO 0xC2FFFF01 |
| #define TEGRA_SIP_MCE_CMD_UPDATE_CROSSOVER_TIME 0xC2FFFF02 |
| #define TEGRA_SIP_MCE_CMD_READ_CSTATE_STATS 0xC2FFFF03 |
| #define TEGRA_SIP_MCE_CMD_WRITE_CSTATE_STATS 0xC2FFFF04 |
| #define TEGRA_SIP_MCE_CMD_IS_SC7_ALLOWED 0xC2FFFF05 |
| #define TEGRA_SIP_MCE_CMD_ONLINE_CORE 0xC2FFFF06 |
| #define TEGRA_SIP_MCE_CMD_CC3_CTRL 0xC2FFFF07 |
| #define TEGRA_SIP_MCE_CMD_ECHO_DATA 0xC2FFFF08 |
| #define TEGRA_SIP_MCE_CMD_READ_VERSIONS 0xC2FFFF09 |
| #define TEGRA_SIP_MCE_CMD_ENUM_FEATURES 0xC2FFFF0A |
| #define TEGRA_SIP_MCE_CMD_ROC_FLUSH_CACHE_TRBITS 0xC2FFFF0B |
| #define TEGRA_SIP_MCE_CMD_ENUM_READ_MCA 0xC2FFFF0C |
| #define TEGRA_SIP_MCE_CMD_ENUM_WRITE_MCA 0xC2FFFF0D |
| #define TEGRA_SIP_MCE_CMD_ROC_FLUSH_CACHE 0xC2FFFF0E |
| #define TEGRA_SIP_MCE_CMD_ROC_CLEAN_CACHE 0xC2FFFF0F |
| #define TEGRA_SIP_MCE_CMD_ENABLE_LATIC 0xC2FFFF10 |
| #define TEGRA_SIP_MCE_CMD_UNCORE_PERFMON_REQ 0xC2FFFF11 |
| #define TEGRA_SIP_MCE_CMD_MISC_CCPLEX 0xC2FFFF12 |
| |
| /******************************************************************************* |
| * This function is responsible for handling all T186 SiP calls |
| ******************************************************************************/ |
| int plat_sip_handler(uint32_t smc_fid, |
| uint64_t x1, |
| uint64_t x2, |
| uint64_t x3, |
| uint64_t x4, |
| const void *cookie, |
| void *handle, |
| uint64_t flags) |
| { |
| int mce_ret; |
| |
| /* |
| * Convert SMC FID to SMC64 until the linux driver uses |
| * SMC64 encoding. |
| */ |
| smc_fid |= (SMC_64 << FUNCID_CC_SHIFT); |
| |
| switch (smc_fid) { |
| |
| /* |
| * Micro Coded Engine (MCE) commands reside in the 0x82FFFF00 - |
| * 0x82FFFFFF SiP SMC space |
| */ |
| case TEGRA_SIP_MCE_CMD_ENTER_CSTATE: |
| case TEGRA_SIP_MCE_CMD_UPDATE_CSTATE_INFO: |
| case TEGRA_SIP_MCE_CMD_UPDATE_CROSSOVER_TIME: |
| case TEGRA_SIP_MCE_CMD_READ_CSTATE_STATS: |
| case TEGRA_SIP_MCE_CMD_WRITE_CSTATE_STATS: |
| case TEGRA_SIP_MCE_CMD_IS_SC7_ALLOWED: |
| case TEGRA_SIP_MCE_CMD_CC3_CTRL: |
| case TEGRA_SIP_MCE_CMD_ECHO_DATA: |
| case TEGRA_SIP_MCE_CMD_READ_VERSIONS: |
| case TEGRA_SIP_MCE_CMD_ENUM_FEATURES: |
| case TEGRA_SIP_MCE_CMD_ROC_FLUSH_CACHE_TRBITS: |
| case TEGRA_SIP_MCE_CMD_ENUM_READ_MCA: |
| case TEGRA_SIP_MCE_CMD_ENUM_WRITE_MCA: |
| case TEGRA_SIP_MCE_CMD_ROC_FLUSH_CACHE: |
| case TEGRA_SIP_MCE_CMD_ROC_CLEAN_CACHE: |
| case TEGRA_SIP_MCE_CMD_ENABLE_LATIC: |
| case TEGRA_SIP_MCE_CMD_UNCORE_PERFMON_REQ: |
| case TEGRA_SIP_MCE_CMD_MISC_CCPLEX: |
| |
| /* clean up the high bits */ |
| smc_fid &= MCE_CMD_MASK; |
| |
| /* execute the command and store the result */ |
| mce_ret = mce_command_handler(smc_fid, x1, x2, x3); |
| write_ctx_reg(get_gpregs_ctx(handle), CTX_GPREG_X0, mce_ret); |
| |
| return 0; |
| |
| case TEGRA_SIP_SYSTEM_SHUTDOWN_STATE: |
| |
| /* clean up the high bits */ |
| x1 = (uint32_t)x1; |
| |
| /* |
| * SC8 is a special Tegra186 system state where the CPUs and |
| * DRAM are powered down but the other subsystem is still |
| * alive. |
| */ |
| |
| return 0; |
| |
| case TEGRA_SIP_ENABLE_FAKE_SYSTEM_SUSPEND: |
| /* |
| * System suspend mode is set if the platform ATF is running is |
| * VDK and there is a debug SIP call. This mode ensures that the |
| * debug path is excercied, instead of regular code path to suit |
| * the pre-silicon platform needs. These include replacing the |
| * the call to WFI with calls to system suspend exit procedures. |
| */ |
| if (tegra_platform_is_virt_dev_kit()) { |
| |
| tegra_fake_system_suspend = true; |
| return 0; |
| } |
| |
| break; |
| |
| default: |
| break; |
| } |
| |
| return -ENOTSUP; |
| } |