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mediatek: mt8183: refine GIC driver for low power scenarios

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Implement rdist save/resore functions to support low power scenarios.

Signed-off-by: kenny liang <kenny.liang@mediatek.com>
Change-Id: I9ddc077a04f843275fbe2e868cdd0bd00d622de7
This commit is contained in:
kenny liang 2019-10-04 10:47:11 +08:00
parent af1ac83e0f
commit 4450a51894
3 changed files with 107 additions and 35 deletions
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10
plat/mediatek/mt8183/include/mt_gic_v3.h
View file

@ -15,15 +15,19 @@
#define GIC500_ACTIVE_CPU_SHIFT 16
#define GIC500_ACTIVE_CPU_MASK (0xff << GIC500_ACTIVE_CPU_SHIFT)
#define NR_INT_POL_CTL 20
void mt_gic_driver_init(void);
void mt_gic_init(void);
void mt_gic_set_pending(uint32_t irq);
uint32_t mt_gic_get_pending(uint32_t irq);
void mt_gic_cpuif_enable(void);
void mt_gic_cpuif_disable(void);
void mt_gic_pcpu_init(void);
void mt_gic_irq_save(void);
void mt_gic_irq_restore(void);
void mt_gic_rdistif_init(void);
void mt_gic_distif_save(void);
void mt_gic_distif_restore(void);
void mt_gic_rdistif_save(void);
void mt_gic_rdistif_restore(void);
void mt_gic_sync_dcm_enable(void);
void mt_gic_sync_dcm_disable(void);

100
plat/mediatek/mt8183/plat_mt_gic.c
View file

@ -11,18 +11,17 @@
#include <bl31/interrupt_mgmt.h>
#include <mt_gic_v3.h>
#include <mtk_plat_common.h>
#include "../drivers/arm/gic/v3/gicv3_private.h"
#include "plat_private.h"
#include <plat/common/platform.h>
#include <platform_def.h>
#include <stdint.h>
#include <stdio.h>
#define NR_INT_POL_CTL 20
uintptr_t rdistif_base_addrs[PLATFORM_CORE_COUNT];
static uint32_t rdist_has_saved[PLATFORM_CORE_COUNT];
/* we save and restore the GICv3 context on system suspend */
gicv3_redist_ctx_t rdist_ctx;
gicv3_dist_ctx_t dist_ctx;
static unsigned int mt_mpidr_to_core_pos(u_register_t mpidr)
@ -38,6 +37,16 @@ gicv3_driver_data_t mt_gicv3_data = {
.mpidr_to_core_pos = mt_mpidr_to_core_pos,
};
struct gic_chip_data {
unsigned int saved_group;
unsigned int saved_enable;
unsigned int saved_conf0;
unsigned int saved_conf1;
unsigned int saved_grpmod;
};
static struct gic_chip_data gic_data;
void clear_sec_pol_ctl_en(void)
{
unsigned int i;
@ -54,15 +63,6 @@ void mt_gic_driver_init(void)
gicv3_driver_init(&mt_gicv3_data);
}
void mt_gic_init(void)
{
gicv3_distif_init();
gicv3_rdistif_init(plat_my_core_pos());
gicv3_cpuif_enable(plat_my_core_pos());
clear_sec_pol_ctl_en();
}
void mt_gic_set_pending(uint32_t irq)
{
gicv3_set_interrupt_pending(irq, plat_my_core_pos());
@ -78,35 +78,83 @@ void mt_gic_cpuif_disable(void)
gicv3_cpuif_disable(plat_my_core_pos());
}
void mt_gic_pcpu_init(void)
void mt_gic_rdistif_init(void)
{
gicv3_rdistif_init(plat_my_core_pos());
unsigned int proc_num;
unsigned int index;
uintptr_t gicr_base;
proc_num = plat_my_core_pos();
gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num];
/* set all SGI/PPI as non-secure GROUP1 by default */
mmio_write_32(gicr_base + GICR_IGROUPR0, ~0U);
mmio_write_32(gicr_base + GICR_IGRPMODR0, 0x0);
/* setup the default PPI/SGI priorities */
for (index = 0; index < TOTAL_PCPU_INTR_NUM; index += 4U)
gicr_write_ipriorityr(gicr_base, index,
GICD_IPRIORITYR_DEF_VAL);
}
void mt_gic_irq_save(void)
void mt_gic_distif_save(void)
{
gicv3_rdistif_save(plat_my_core_pos(), &rdist_ctx);
gicv3_distif_save(&dist_ctx);
}
void mt_gic_irq_restore(void)
void mt_gic_distif_restore(void)
{
gicv3_distif_init_restore(&dist_ctx);
gicv3_rdistif_init_restore(plat_my_core_pos(), &rdist_ctx);
}
void mt_gic_rdistif_save(void)
{
unsigned int proc_num;
uintptr_t gicr_base;
proc_num = plat_my_core_pos();
gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num];
gic_data.saved_group = mmio_read_32(gicr_base + GICR_IGROUPR0);
gic_data.saved_enable = mmio_read_32(gicr_base + GICR_ISENABLER0);
gic_data.saved_conf0 = mmio_read_32(gicr_base + GICR_ICFGR0);
gic_data.saved_conf1 = mmio_read_32(gicr_base + GICR_ICFGR1);
gic_data.saved_grpmod = mmio_read_32(gicr_base + GICR_IGRPMODR0);
rdist_has_saved[proc_num] = 1;
}
void mt_gic_rdistif_restore(void)
{
unsigned int proc_num;
uintptr_t gicr_base;
proc_num = plat_my_core_pos();
if (rdist_has_saved[proc_num] == 1) {
gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num];
mmio_write_32(gicr_base + GICR_IGROUPR0, gic_data.saved_group);
mmio_write_32(gicr_base + GICR_ISENABLER0, gic_data.saved_enable);
mmio_write_32(gicr_base + GICR_ICFGR0, gic_data.saved_conf0);
mmio_write_32(gicr_base + GICR_ICFGR1, gic_data.saved_conf1);
mmio_write_32(gicr_base + GICR_IGRPMODR0, gic_data.saved_grpmod);
}
}
void mt_gic_sync_dcm_enable(void)
{
unsigned int val = mmio_read_32(GIC_SYNC_DCM);
val &= ~GIC_SYNC_DCM_MASK;
mmio_write_32(GIC_SYNC_DCM, val | GIC_SYNC_DCM_ON);
mmio_clrsetbits_32(GIC_SYNC_DCM, GIC_SYNC_DCM_MASK, GIC_SYNC_DCM_ON);
}
void mt_gic_sync_dcm_disable(void)
{
unsigned int val = mmio_read_32(GIC_SYNC_DCM);
val &= ~GIC_SYNC_DCM_MASK;
mmio_write_32(GIC_SYNC_DCM, val | GIC_SYNC_DCM_OFF);
mmio_clrsetbits_32(GIC_SYNC_DCM, GIC_SYNC_DCM_MASK, GIC_SYNC_DCM_OFF);
}
void mt_gic_init(void)
{
gicv3_distif_init();
gicv3_cpuif_enable(plat_my_core_pos());
mt_gic_rdistif_init();
clear_sec_pol_ctl_en();
}

32
plat/mediatek/mt8183/plat_pm.c
View file

@ -152,6 +152,21 @@ static bool clst_single_on(int cluster, int cpu)
return !(on_stat & (cpu_mask[cluster] & ~BIT(my_idx)));
}
static void plat_cpu_pwrdwn_common(void)
{
/* Prevent interrupts from spuriously waking up this cpu */
mt_gic_rdistif_save();
mt_gic_cpuif_disable();
}
static void plat_cpu_pwron_common(void)
{
/* Enable the gic cpu interface */
mt_gic_cpuif_enable();
mt_gic_rdistif_init();
mt_gic_rdistif_restore();
}
static void plat_cluster_pwrdwn_common(uint64_t mpidr, int cluster)
{
if (cluster > 0)
@ -312,7 +327,7 @@ static void plat_mtk_power_domain_off(const psci_power_state_t *state)
bool cluster_off = (HP_CLUSTER_OFF && afflvl1 &&
clst_single_on(cluster, cpu));
mt_gic_cpuif_disable();
plat_cpu_pwrdwn_common();
if (cluster_off)
plat_cluster_pwrdwn_common(mpidr, cluster);
@ -332,8 +347,7 @@ static void plat_mtk_power_domain_on_finish(const psci_power_state_t *state)
if (afflvl1)
plat_cluster_pwron_common(mpidr, cluster);
mt_gic_pcpu_init();
mt_gic_cpuif_enable();
plat_cpu_pwron_common();
hotplug_ctrl_cpu_on_finish(cluster, cpu);
}
@ -352,8 +366,8 @@ static void plat_mtk_power_domain_suspend(const psci_power_state_t *state)
mcucfg_init_archstate(cluster, cpu, 1);
mcucfg_set_bootaddr(cluster, cpu, secure_entrypoint);
mt_gic_cpuif_disable();
mt_gic_irq_save();
plat_cpu_pwrdwn_common();
plat_dcm_mcsi_a_backup();
if (cluster_off || afflvl2)
@ -376,6 +390,8 @@ static void plat_mtk_power_domain_suspend(const psci_power_state_t *state)
if (MCDI_SSPM)
while (sspm_ipi_recv_non_blocking(IPI_ID_SUSPEND, d, l))
;
mt_gic_distif_save();
} else {
mcdi_ctrl_cluster_cpu_off(cluster, cpu, cluster_off);
}
@ -394,7 +410,9 @@ static void plat_mtk_power_domain_suspend_finish(const psci_power_state_t *state
uint32_t l = sizeof(spm_d) / sizeof(uint32_t);
mt_gic_init();
mt_gic_irq_restore();
mt_gic_distif_restore();
mt_gic_rdistif_restore();
mmio_write_32(EMI_WFIFO, 0xf);
if (MCDI_SSPM)
@ -407,6 +425,8 @@ static void plat_mtk_power_domain_suspend_finish(const psci_power_state_t *state
;
mcdi_ctrl_resume();
} else {
plat_cpu_pwron_common();
}
plat_cluster_pwron_common(mpidr, cluster);