From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:13:47 +0200 Subject: Adding upstream version 2.8.0+dfsg. Signed-off-by: Daniel Baumann --- plat/mediatek/mt8192/drivers/mcdi/mt_cpu_pm_cpc.c | 269 ++++++++++++++++++++++ 1 file changed, 269 insertions(+) create mode 100644 plat/mediatek/mt8192/drivers/mcdi/mt_cpu_pm_cpc.c (limited to 'plat/mediatek/mt8192/drivers/mcdi/mt_cpu_pm_cpc.c') diff --git a/plat/mediatek/mt8192/drivers/mcdi/mt_cpu_pm_cpc.c b/plat/mediatek/mt8192/drivers/mcdi/mt_cpu_pm_cpc.c new file mode 100644 index 0000000..f8c51a1 --- /dev/null +++ b/plat/mediatek/mt8192/drivers/mcdi/mt_cpu_pm_cpc.c @@ -0,0 +1,269 @@ +/* + * Copyright (c) 2020, MediaTek Inc. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include + +#include + +#include +#include + +struct mtk_cpc_dev { + int auto_off; + unsigned int auto_thres_tick; +}; + +static struct mtk_cpc_dev cpc; + +static int mtk_cpc_last_core_prot(uint32_t prot_req, + uint32_t resp_reg, uint32_t resp_ofs) +{ + uint32_t sta, retry; + + retry = 0U; + + while (retry++ < RETRY_CNT_MAX) { + + mmio_write_32(CPC_MCUSYS_LAST_CORE_REQ, prot_req); + + udelay(1U); + + sta = (mmio_read_32(resp_reg) >> resp_ofs) & CPC_PROT_RESP_MASK; + + if (sta == PROT_SUCCESS) { + return CPC_SUCCESS; + } else if (sta == PROT_GIVEUP) { + return CPC_ERR_FAIL; + } + } + + return CPC_ERR_TIMEOUT; +} + +int mtk_cpu_pm_mcusys_prot_aquire(void) +{ + return mtk_cpc_last_core_prot( + MCUSYS_PROT_SET, + CPC_MCUSYS_LAST_CORE_RESP, + MCUSYS_RESP_OFS); +} + +void mtk_cpu_pm_mcusys_prot_release(void) +{ + mmio_write_32(CPC_MCUSYS_PWR_ON_MASK, MCUSYS_PROT_CLR); +} + +int mtk_cpu_pm_cluster_prot_aquire(unsigned int cluster) +{ + return mtk_cpc_last_core_prot( + CPUSYS_PROT_SET, + CPC_MCUSYS_MP_LAST_CORE_RESP, + CPUSYS_RESP_OFS); +} + +void mtk_cpu_pm_cluster_prot_release(unsigned int cluster) +{ + mmio_write_32(CPC_MCUSYS_PWR_ON_MASK, CPUSYS_PROT_CLR); +} + +static void mtk_cpc_cluster_cnt_backup(void) +{ + uint32_t backup_cnt; + uint32_t curr_cnt; + uint32_t cnt_mask = GENMASK(14, 0); + uint32_t clr_mask = GENMASK(1, 0); + + /* Single Cluster */ + backup_cnt = mmio_read_32(CPC_CLUSTER_CNT_BACKUP); + curr_cnt = mmio_read_32(CPC_MCUSYS_CLUSTER_COUNTER); + + /* Get off count if dormant count is 0 */ + if ((curr_cnt & cnt_mask) == 0U) { + curr_cnt = (curr_cnt >> 16) & cnt_mask; + } else { + curr_cnt = curr_cnt & cnt_mask; + } + + mmio_write_32(CPC_CLUSTER_CNT_BACKUP, backup_cnt + curr_cnt); + mmio_write_32(CPC_MCUSYS_CLUSTER_COUNTER_CLR, clr_mask); +} + +static inline void mtk_cpc_mcusys_off_en(void) +{ + mmio_write_32(CPC_MCUSYS_PWR_CTRL, 1U); +} + +static inline void mtk_cpc_mcusys_off_dis(void) +{ + mmio_write_32(CPC_MCUSYS_PWR_CTRL, 0U); +} + +void mtk_cpc_mcusys_off_reflect(void) +{ + mtk_cpc_mcusys_off_dis(); + mtk_cpu_pm_mcusys_prot_release(); +} + +int mtk_cpc_mcusys_off_prepare(void) +{ + if (mtk_cpu_pm_mcusys_prot_aquire() != CPC_SUCCESS) { + return CPC_ERR_FAIL; + } + + mtk_cpc_cluster_cnt_backup(); + mtk_cpc_mcusys_off_en(); + + return CPC_SUCCESS; +} + +void mtk_cpc_core_on_hint_set(unsigned int cpu) +{ + mmio_write_32(CPC_MCUSYS_CPU_ON_SW_HINT_SET, BIT(cpu)); +} + +void mtk_cpc_core_on_hint_clr(unsigned int cpu) +{ + mmio_write_32(CPC_MCUSYS_CPU_ON_SW_HINT_CLR, BIT(cpu)); +} + +static void mtk_cpc_dump_timestamp(void) +{ + uint32_t id; + + for (id = 0U; id < CPC_TRACE_ID_NUM; id++) { + mmio_write_32(CPC_MCUSYS_TRACE_SEL, id); + + memcpy((void *)(uintptr_t)CPC_TRACE_SRAM(id), + (const void *)(uintptr_t)CPC_MCUSYS_TRACE_DATA, + CPC_TRACE_SIZE); + } +} + +void mtk_cpc_time_sync(void) +{ + uint64_t kt; + uint32_t systime_l, systime_h; + + kt = sched_clock(); + systime_l = mmio_read_32(CNTSYS_L_REG); + systime_h = mmio_read_32(CNTSYS_H_REG); + + /* sync kernel timer to cpc */ + mmio_write_32(CPC_MCUSYS_CPC_KERNEL_TIME_L_BASE, (uint32_t)kt); + mmio_write_32(CPC_MCUSYS_CPC_KERNEL_TIME_H_BASE, (uint32_t)(kt >> 32)); + /* sync system timer to cpc */ + mmio_write_32(CPC_MCUSYS_CPC_SYSTEM_TIME_L_BASE, systime_l); + mmio_write_32(CPC_MCUSYS_CPC_SYSTEM_TIME_H_BASE, systime_h); +} + +static void mtk_cpc_config(uint32_t cfg, uint32_t data) +{ + uint32_t val; + uint32_t reg = 0U; + + switch (cfg) { + case CPC_SMC_CONFIG_PROF: + reg = CPC_MCUSYS_CPC_DBG_SETTING; + val = mmio_read_32(reg); + val = (data != 0U) ? (val | CPC_PROF_EN) : (val & ~CPC_PROF_EN); + break; + case CPC_SMC_CONFIG_AUTO_OFF: + reg = CPC_MCUSYS_CPC_FLOW_CTRL_CFG; + val = mmio_read_32(reg); + if (data != 0U) { + val |= CPC_AUTO_OFF_EN; + cpc.auto_off = 1; + } else { + val &= ~CPC_AUTO_OFF_EN; + cpc.auto_off = 0; + } + break; + case CPC_SMC_CONFIG_AUTO_OFF_THRES: + reg = CPC_MCUSYS_CPC_OFF_THRES; + cpc.auto_thres_tick = us_to_ticks(data); + val = cpc.auto_thres_tick; + break; + case CPC_SMC_CONFIG_CNT_CLR: + reg = CPC_MCUSYS_CLUSTER_COUNTER_CLR; + val = GENMASK(1, 0); /* clr_mask */ + break; + case CPC_SMC_CONFIG_TIME_SYNC: + mtk_cpc_time_sync(); + break; + default: + break; + } + + if (reg != 0U) { + mmio_write_32(reg, val); + } +} + +static uint32_t mtk_cpc_read_config(uint32_t cfg) +{ + uint32_t res = 0U; + + switch (cfg) { + case CPC_SMC_CONFIG_PROF: + res = (mmio_read_32(CPC_MCUSYS_CPC_DBG_SETTING) & CPC_PROF_EN) ? + 1U : 0U; + break; + case CPC_SMC_CONFIG_AUTO_OFF: + res = cpc.auto_off; + break; + case CPC_SMC_CONFIG_AUTO_OFF_THRES: + res = ticks_to_us(cpc.auto_thres_tick); + break; + case CPC_SMC_CONFIG_CNT_CLR: + break; + default: + break; + } + + return res; +} + +uint64_t mtk_cpc_handler(uint64_t act, uint64_t arg1, uint64_t arg2) +{ + uint64_t res = 0ULL; + + switch (act) { + case CPC_SMC_EVENT_DUMP_TRACE_DATA: + mtk_cpc_dump_timestamp(); + break; + case CPC_SMC_EVENT_GIC_DPG_SET: + /* isolated_status = x2; */ + break; + case CPC_SMC_EVENT_CPC_CONFIG: + mtk_cpc_config((uint32_t)arg1, (uint32_t)arg2); + break; + case CPC_SMC_EVENT_READ_CONFIG: + res = mtk_cpc_read_config((uint32_t)arg1); + break; + default: + break; + } + + return res; +} + +void mtk_cpc_init(void) +{ + mmio_write_32(CPC_MCUSYS_CPC_DBG_SETTING, + mmio_read_32(CPC_MCUSYS_CPC_DBG_SETTING) + | CPC_DBG_EN + | CPC_CALC_EN); + + cpc.auto_off = 1; + cpc.auto_thres_tick = us_to_ticks(8000); + + mmio_write_32(CPC_MCUSYS_CPC_FLOW_CTRL_CFG, + mmio_read_32(CPC_MCUSYS_CPC_FLOW_CTRL_CFG) + | CPC_OFF_PRE_EN + | (cpc.auto_off ? CPC_AUTO_OFF_EN : 0U)); + + mmio_write_32(CPC_MCUSYS_CPC_OFF_THRES, cpc.auto_thres_tick); +} -- cgit v1.2.3