diff options
Diffstat (limited to 'plat/mediatek/common/drivers/gic600/mt_gic_v3.c')
| -rw-r--r-- | plat/mediatek/common/drivers/gic600/mt_gic_v3.c | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/plat/mediatek/common/drivers/gic600/mt_gic_v3.c b/plat/mediatek/common/drivers/gic600/mt_gic_v3.c new file mode 100644 index 000000000..ae8d697a5 --- /dev/null +++ b/plat/mediatek/common/drivers/gic600/mt_gic_v3.c @@ -0,0 +1,196 @@ +/* + * 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); +} |