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/*
* Copyright (c) 2020, MediaTek Inc. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <stdint.h>
#include <stdio.h>
#include "../drivers/arm/gic/v3/gicv3_private.h"
#include <bl31/interrupt_mgmt.h>
#include <common/bl_common.h>
#include <common/debug.h>
#include <mt_gic_v3.h>
#include <mtk_plat_common.h>
#include <plat/common/platform.h>
#include <plat_private.h>
#include <platform_def.h>
#define SGI_MASK 0xffff
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_dist_ctx_t dist_ctx;
static unsigned int mt_mpidr_to_core_pos(u_register_t mpidr)
{
return plat_core_pos_by_mpidr(mpidr);
}
gicv3_driver_data_t mt_gicv3_data = {
.gicd_base = MT_GIC_BASE,
.gicr_base = MT_GIC_RDIST_BASE,
.rdistif_num = PLATFORM_CORE_COUNT,
.rdistif_base_addrs = rdistif_base_addrs,
.mpidr_to_core_pos = mt_mpidr_to_core_pos,
};
struct gic_chip_data {
/* All cores share the same configuration */
unsigned int saved_group;
unsigned int saved_enable;
unsigned int saved_conf0;
unsigned int saved_conf1;
unsigned int saved_grpmod;
/* Per-core sgi */
unsigned int saved_sgi[PLATFORM_CORE_COUNT];
};
static struct gic_chip_data gic_data;
void mt_gic_driver_init(void)
{
gicv3_driver_init(&mt_gicv3_data);
}
void mt_gic_set_pending(uint32_t irq)
{
gicv3_set_interrupt_pending(irq, plat_my_core_pos());
}
void mt_gic_distif_save(void)
{
gicv3_distif_save(&dist_ctx);
}
void mt_gic_distif_restore(void)
{
gicv3_distif_init_restore(&dist_ctx);
}
void mt_gic_rdistif_init(void)
{
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_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_rdistif_restore_all(void)
{
unsigned int proc_num;
uintptr_t gicr_base;
for (proc_num = 0; proc_num < PLATFORM_CORE_COUNT; proc_num++) {
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 gic_sgi_save_all(void)
{
unsigned int proc_num;
uintptr_t gicr_base;
for (proc_num = 0; proc_num < PLATFORM_CORE_COUNT; proc_num++) {
gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num];
gic_data.saved_sgi[proc_num] =
mmio_read_32(gicr_base + GICR_ISPENDR0) & SGI_MASK;
}
}
void gic_sgi_restore_all(void)
{
unsigned int proc_num;
uintptr_t gicr_base;
for (proc_num = 0; proc_num < PLATFORM_CORE_COUNT; proc_num++) {
gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num];
mmio_write_32(gicr_base + GICR_ICPENDR0, SGI_MASK);
mmio_write_32(gicr_base + GICR_ISPENDR0,
gic_data.saved_sgi[proc_num] & SGI_MASK);
}
}
void mt_gic_init(void)
{
gicv3_distif_init();
gicv3_rdistif_init(plat_my_core_pos());
gicv3_cpuif_enable(plat_my_core_pos());
}
uint32_t mt_irq_get_pending(uint32_t irq)
{
uint32_t val;
val = mmio_read_32(BASE_GICD_BASE + GICD_ISPENDR +
irq / 32 * 4);
val = (val >> (irq % 32)) & 1U;
return val;
}
void mt_irq_set_pending(uint32_t irq)
{
uint32_t bit = 1U << (irq % 32);
mmio_write_32(BASE_GICD_BASE + GICD_ISPENDR +
irq / 32 * 4, bit);
}
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