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/*
* Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <platform_def.h>
#include <arch_helpers.h>
#include <common/debug.h>
#include <lib/mmio.h>
#include <hisi_ipc.h>
#include <hisi_sram_map.h>
static int ipc_init;
static unsigned int cpu_ipc_num[PLATFORM_CLUSTER_COUNT][PLATFORM_CORE_COUNT_PER_CLUSTER] = {
{
HISI_IPC_MCU_INT_SRC_ACPU0_PD,
HISI_IPC_MCU_INT_SRC_ACPU1_PD,
HISI_IPC_MCU_INT_SRC_ACPU2_PD,
HISI_IPC_MCU_INT_SRC_ACPU3_PD,
},
{
HISI_IPC_MCU_INT_SRC_ACPU4_PD,
HISI_IPC_MCU_INT_SRC_ACPU5_PD,
HISI_IPC_MCU_INT_SRC_ACPU6_PD,
HISI_IPC_MCU_INT_SRC_ACPU7_PD,
}
};
int hisi_cpus_pd_in_cluster_besides_curr(unsigned int cpu,
unsigned int cluster)
{
unsigned int val = 0, cpu_val = 0;
int i;
val = mmio_read_32(ACPU_CORE_POWERDOWN_FLAGS_ADDR);
val = val >> (cluster * 16);
for (i = 0; i < PLATFORM_CORE_COUNT_PER_CLUSTER; i++) {
if (cpu == i)
continue;
cpu_val = (val >> (i * 4)) & 0xF;
if (cpu_val == 0x8)
return 0;
}
return 1;
}
int hisi_cpus_powered_off_besides_curr(unsigned int cpu)
{
unsigned int val;
val = mmio_read_32(ACPU_CORE_POWERDOWN_FLAGS_ADDR);
return (val == (0x8 << (cpu * 4)));
}
static void hisi_ipc_send(unsigned int ipc_num)
{
if (!ipc_init) {
printf("error ipc base is null!!!\n");
return;
}
mmio_write_32(HISI_IPC_CPU_RAW_INT_ADDR, 1 << ipc_num);
}
void hisi_ipc_spin_lock(unsigned int signal)
{
unsigned int hs_ctrl;
if (signal >= HISI_IPC_INT_SRC_NUM)
return;
do {
hs_ctrl = mmio_read_32(HISI_IPC_ACPU_CTRL(signal));
} while (hs_ctrl);
}
void hisi_ipc_spin_unlock(unsigned int signal)
{
if (signal >= HISI_IPC_INT_SRC_NUM)
return;
mmio_write_32(HISI_IPC_ACPU_CTRL(signal), 0);
}
void hisi_ipc_cpu_on_off(unsigned int cpu, unsigned int cluster,
unsigned int mode)
{
unsigned int val = 0;
unsigned int offset;
if (mode == HISI_IPC_PM_ON)
offset = cluster * 16 + cpu * 4;
else
offset = cluster * 16 + cpu * 4 + 1;
hisi_ipc_spin_lock(HISI_IPC_SEM_CPUIDLE);
val = mmio_read_32(ACPU_CORE_POWERDOWN_FLAGS_ADDR);
val |= (0x01 << offset);
mmio_write_32(ACPU_CORE_POWERDOWN_FLAGS_ADDR, val);
isb();
dsb();
hisi_ipc_spin_unlock(HISI_IPC_SEM_CPUIDLE);
hisi_ipc_send(cpu_ipc_num[cluster][cpu]);
}
void hisi_ipc_cpu_on(unsigned int cpu, unsigned int cluster)
{
hisi_ipc_cpu_on_off(cpu, cluster, HISI_IPC_PM_ON);
}
void hisi_ipc_cpu_off(unsigned int cpu, unsigned int cluster)
{
hisi_ipc_cpu_on_off(cpu, cluster, HISI_IPC_PM_OFF);
}
void hisi_ipc_cluster_on_off(unsigned int cpu, unsigned int cluster,
unsigned int mode)
{
unsigned int val = 0;
unsigned int offset;
if (mode == HISI_IPC_PM_ON)
offset = cluster * 4;
else
offset = cluster * 4 + 1;
hisi_ipc_spin_lock(HISI_IPC_SEM_CPUIDLE);
val = mmio_read_32(ACPU_CLUSTER_POWERDOWN_FLAGS_ADDR);
val |= (0x01 << offset);
mmio_write_32(ACPU_CLUSTER_POWERDOWN_FLAGS_ADDR, val);
isb();
dsb();
hisi_ipc_spin_unlock(HISI_IPC_SEM_CPUIDLE);
hisi_ipc_send(cpu_ipc_num[cluster][cpu]);
}
void hisi_ipc_cluster_on(unsigned int cpu, unsigned int cluster)
{
hisi_ipc_cluster_on_off(cpu, cluster, HISI_IPC_PM_ON);
}
void hisi_ipc_cluster_off(unsigned int cpu, unsigned int cluster)
{
hisi_ipc_cluster_on_off(cpu, cluster, HISI_IPC_PM_OFF);
}
void hisi_ipc_cpu_suspend(unsigned int cpu, unsigned int cluster)
{
unsigned int val = 0;
unsigned int offset;
offset = cluster * 16 + cpu * 4 + 2;
hisi_ipc_spin_lock(HISI_IPC_SEM_CPUIDLE);
val = mmio_read_32(ACPU_CORE_POWERDOWN_FLAGS_ADDR);
val |= (0x01 << offset);
mmio_write_32(ACPU_CORE_POWERDOWN_FLAGS_ADDR, val);
hisi_ipc_spin_unlock(HISI_IPC_SEM_CPUIDLE);
hisi_ipc_send(cpu_ipc_num[cluster][cpu]);
}
void hisi_ipc_cluster_suspend(unsigned int cpu, unsigned int cluster)
{
unsigned int val;
unsigned int offset;
offset = cluster * 4 + 1;
hisi_ipc_spin_lock(HISI_IPC_SEM_CPUIDLE);
if (hisi_cpus_pd_in_cluster_besides_curr(cpu, cluster)) {
val = mmio_read_32(ACPU_CLUSTER_POWERDOWN_FLAGS_ADDR);
val |= (0x01 << offset);
mmio_write_32(ACPU_CLUSTER_POWERDOWN_FLAGS_ADDR, val);
}
hisi_ipc_spin_unlock(HISI_IPC_SEM_CPUIDLE);
hisi_ipc_send(cpu_ipc_num[cluster][cpu]);
}
void hisi_ipc_psci_system_off(void)
{
hisi_ipc_send(HISI_IPC_MCU_INT_SRC_ACPU_PD);
}
int hisi_ipc_init(void)
{
ipc_init = 1;
mmio_write_32(ACPU_CORE_POWERDOWN_FLAGS_ADDR, 0x8);
mmio_write_32(ACPU_CLUSTER_POWERDOWN_FLAGS_ADDR, 0x8);
return 0;
}
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