diff options
Diffstat (limited to 'drivers/arm/gic')
| -rw-r--r-- | drivers/arm/gic/common/gic_common.c | 342 | ||||
| -rw-r--r-- | drivers/arm/gic/common/gic_common_private.h | 89 | ||||
| -rw-r--r-- | drivers/arm/gic/v2/gicdv2_helpers.c | 340 | ||||
| -rw-r--r-- | drivers/arm/gic/v2/gicv2.mk | 15 | ||||
| -rw-r--r-- | drivers/arm/gic/v2/gicv2_helpers.c | 220 | ||||
| -rw-r--r-- | drivers/arm/gic/v2/gicv2_main.c | 556 | ||||
| -rw-r--r-- | drivers/arm/gic/v2/gicv2_private.h | 150 | ||||
| -rw-r--r-- | drivers/arm/gic/v3/arm_gicv3_common.c | 115 | ||||
| -rw-r--r-- | drivers/arm/gic/v3/gic-x00.c | 232 | ||||
| -rw-r--r-- | drivers/arm/gic/v3/gic600_multichip.c | 391 | ||||
| -rw-r--r-- | drivers/arm/gic/v3/gic600_multichip_private.h | 111 | ||||
| -rw-r--r-- | drivers/arm/gic/v3/gic600ae_fmu.c | 384 | ||||
| -rw-r--r-- | drivers/arm/gic/v3/gic600ae_fmu_helpers.c | 304 | ||||
| -rw-r--r-- | drivers/arm/gic/v3/gicdv3_helpers.c | 244 | ||||
| -rw-r--r-- | drivers/arm/gic/v3/gicrv3_helpers.c | 139 | ||||
| -rw-r--r-- | drivers/arm/gic/v3/gicv3.mk | 58 | ||||
| -rw-r--r-- | drivers/arm/gic/v3/gicv3_helpers.c | 460 | ||||
| -rw-r--r-- | drivers/arm/gic/v3/gicv3_main.c | 1391 | ||||
| -rw-r--r-- | drivers/arm/gic/v3/gicv3_private.h | 709 |
19 files changed, 6250 insertions, 0 deletions
diff --git a/drivers/arm/gic/common/gic_common.c b/drivers/arm/gic/common/gic_common.c new file mode 100644 index 0000000..bf6405f --- /dev/null +++ b/drivers/arm/gic/common/gic_common.c @@ -0,0 +1,342 @@ +/* + * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#pragma message __FILE__ " is deprecated, use gicv2.mk instead" + +#include <assert.h> + +#include <drivers/arm/gic_common.h> +#include <lib/mmio.h> + +#include "gic_common_private.h" + +/******************************************************************************* + * GIC Distributor interface accessors for reading entire registers + ******************************************************************************/ +/* + * Accessor to read the GIC Distributor IGROUPR corresponding to the interrupt + * `id`, 32 interrupt ids at a time. + */ +unsigned int gicd_read_igroupr(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> IGROUPR_SHIFT; + + return mmio_read_32(base + GICD_IGROUPR + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ISENABLER corresponding to the + * interrupt `id`, 32 interrupt ids at a time. + */ +unsigned int gicd_read_isenabler(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ISENABLER_SHIFT; + + return mmio_read_32(base + GICD_ISENABLER + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ICENABLER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_icenabler(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ICENABLER_SHIFT; + + return mmio_read_32(base + GICD_ICENABLER + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ISPENDR corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_ispendr(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ISPENDR_SHIFT; + + return mmio_read_32(base + GICD_ISPENDR + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ICPENDR corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_icpendr(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ICPENDR_SHIFT; + + return mmio_read_32(base + GICD_ICPENDR + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ISACTIVER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_isactiver(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ISACTIVER_SHIFT; + + return mmio_read_32(base + GICD_ISACTIVER + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ICACTIVER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_icactiver(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ICACTIVER_SHIFT; + + return mmio_read_32(base + GICD_ICACTIVER + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor IPRIORITYR corresponding to the + * interrupt `id`, 4 interrupt IDs at a time. + */ +unsigned int gicd_read_ipriorityr(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> IPRIORITYR_SHIFT; + + return mmio_read_32(base + GICD_IPRIORITYR + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ICGFR corresponding to the + * interrupt `id`, 16 interrupt IDs at a time. + */ +unsigned int gicd_read_icfgr(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ICFGR_SHIFT; + + return mmio_read_32(base + GICD_ICFGR + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor NSACR corresponding to the + * interrupt `id`, 16 interrupt IDs at a time. + */ +unsigned int gicd_read_nsacr(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> NSACR_SHIFT; + + return mmio_read_32(base + GICD_NSACR + (n << 2)); +} + +/******************************************************************************* + * GIC Distributor interface accessors for writing entire registers + ******************************************************************************/ +/* + * Accessor to write the GIC Distributor IGROUPR corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_igroupr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> IGROUPR_SHIFT; + + mmio_write_32(base + GICD_IGROUPR + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ISENABLER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_isenabler(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ISENABLER_SHIFT; + + mmio_write_32(base + GICD_ISENABLER + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ICENABLER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_icenabler(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ICENABLER_SHIFT; + + mmio_write_32(base + GICD_ICENABLER + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ISPENDR corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_ispendr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ISPENDR_SHIFT; + + mmio_write_32(base + GICD_ISPENDR + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ICPENDR corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_icpendr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ICPENDR_SHIFT; + + mmio_write_32(base + GICD_ICPENDR + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ISACTIVER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_isactiver(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ISACTIVER_SHIFT; + + mmio_write_32(base + GICD_ISACTIVER + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ICACTIVER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_icactiver(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ICACTIVER_SHIFT; + + mmio_write_32(base + GICD_ICACTIVER + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor IPRIORITYR corresponding to the + * interrupt `id`, 4 interrupt IDs at a time. + */ +void gicd_write_ipriorityr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> IPRIORITYR_SHIFT; + + mmio_write_32(base + GICD_IPRIORITYR + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ICFGR corresponding to the + * interrupt `id`, 16 interrupt IDs at a time. + */ +void gicd_write_icfgr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ICFGR_SHIFT; + + mmio_write_32(base + GICD_ICFGR + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor NSACR corresponding to the + * interrupt `id`, 16 interrupt IDs at a time. + */ +void gicd_write_nsacr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> NSACR_SHIFT; + + mmio_write_32(base + GICD_NSACR + (n << 2), val); +} + +/******************************************************************************* + * GIC Distributor functions for accessing the GIC registers + * corresponding to a single interrupt ID. These functions use bitwise + * operations or appropriate register accesses to modify or return + * the bit-field corresponding the single interrupt ID. + ******************************************************************************/ +unsigned int gicd_get_igroupr(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << IGROUPR_SHIFT) - 1U); + unsigned int reg_val = gicd_read_igroupr(base, id); + + return (reg_val >> bit_num) & 0x1U; +} + +void gicd_set_igroupr(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << IGROUPR_SHIFT) - 1U); + unsigned int reg_val = gicd_read_igroupr(base, id); + + gicd_write_igroupr(base, id, reg_val | (1U << bit_num)); +} + +void gicd_clr_igroupr(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << IGROUPR_SHIFT) - 1U); + unsigned int reg_val = gicd_read_igroupr(base, id); + + gicd_write_igroupr(base, id, reg_val & ~(1U << bit_num)); +} + +void gicd_set_isenabler(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ISENABLER_SHIFT) - 1U); + + gicd_write_isenabler(base, id, (1U << bit_num)); +} + +void gicd_set_icenabler(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ICENABLER_SHIFT) - 1U); + + gicd_write_icenabler(base, id, (1U << bit_num)); +} + +void gicd_set_ispendr(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ISPENDR_SHIFT) - 1U); + + gicd_write_ispendr(base, id, (1U << bit_num)); +} + +void gicd_set_icpendr(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ICPENDR_SHIFT) - 1U); + + gicd_write_icpendr(base, id, (1U << bit_num)); +} + +unsigned int gicd_get_isactiver(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ISACTIVER_SHIFT) - 1U); + unsigned int reg_val = gicd_read_isactiver(base, id); + + return (reg_val >> bit_num) & 0x1U; +} + +void gicd_set_isactiver(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ISACTIVER_SHIFT) - 1U); + + gicd_write_isactiver(base, id, (1U << bit_num)); +} + +void gicd_set_icactiver(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ICACTIVER_SHIFT) - 1U); + + gicd_write_icactiver(base, id, (1U << bit_num)); +} + +void gicd_set_ipriorityr(uintptr_t base, unsigned int id, unsigned int pri) +{ + uint8_t val = pri & GIC_PRI_MASK; + + mmio_write_8(base + GICD_IPRIORITYR + id, val); +} + +void gicd_set_icfgr(uintptr_t base, unsigned int id, unsigned int cfg) +{ + /* Interrupt configuration is a 2-bit field */ + unsigned int bit_num = id & ((1U << ICFGR_SHIFT) - 1U); + unsigned int bit_shift = bit_num << 1; + + uint32_t reg_val = gicd_read_icfgr(base, id); + + /* Clear the field, and insert required configuration */ + reg_val &= ~(GIC_CFG_MASK << bit_shift); + reg_val |= ((cfg & GIC_CFG_MASK) << bit_shift); + + gicd_write_icfgr(base, id, reg_val); +} diff --git a/drivers/arm/gic/common/gic_common_private.h b/drivers/arm/gic/common/gic_common_private.h new file mode 100644 index 0000000..1ab1bdb --- /dev/null +++ b/drivers/arm/gic/common/gic_common_private.h @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2016-2018, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef GIC_COMMON_PRIVATE_H +#define GIC_COMMON_PRIVATE_H + +#include <stdint.h> + +#include <drivers/arm/gic_common.h> +#include <lib/mmio.h> + +/******************************************************************************* + * GIC Distributor interface register accessors that are common to GICv3 & GICv2 + ******************************************************************************/ +static inline unsigned int gicd_read_ctlr(uintptr_t base) +{ + return mmio_read_32(base + GICD_CTLR); +} + +static inline unsigned int gicd_read_typer(uintptr_t base) +{ + return mmio_read_32(base + GICD_TYPER); +} + +static inline unsigned int gicd_read_iidr(uintptr_t base) +{ + return mmio_read_32(base + GICD_IIDR); +} + +static inline void gicd_write_ctlr(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICD_CTLR, val); +} + +/******************************************************************************* + * GIC Distributor function prototypes for accessing entire registers. + * Note: The raw register values correspond to multiple interrupt IDs and + * the number of interrupt IDs involved depends on the register accessed. + ******************************************************************************/ +unsigned int gicd_read_igroupr(uintptr_t base, unsigned int id); +unsigned int gicd_read_isenabler(uintptr_t base, unsigned int id); +unsigned int gicd_read_icenabler(uintptr_t base, unsigned int id); +unsigned int gicd_read_ispendr(uintptr_t base, unsigned int id); +unsigned int gicd_read_icpendr(uintptr_t base, unsigned int id); +unsigned int gicd_read_isactiver(uintptr_t base, unsigned int id); +unsigned int gicd_read_icactiver(uintptr_t base, unsigned int id); +unsigned int gicd_read_ipriorityr(uintptr_t base, unsigned int id); +unsigned int gicd_read_icfgr(uintptr_t base, unsigned int id); +unsigned int gicd_read_nsacr(uintptr_t base, unsigned int id); +unsigned int gicd_read_spendsgir(uintptr_t base, unsigned int id); +unsigned int gicd_read_cpendsgir(uintptr_t base, unsigned int id); +unsigned int gicd_read_itargetsr(uintptr_t base, unsigned int id); +void gicd_write_igroupr(uintptr_t base, unsigned int id, unsigned int val); +void gicd_write_isenabler(uintptr_t base, unsigned int id, unsigned int val); +void gicd_write_icenabler(uintptr_t base, unsigned int id, unsigned int val); +void gicd_write_ispendr(uintptr_t base, unsigned int id, unsigned int val); +void gicd_write_icpendr(uintptr_t base, unsigned int id, unsigned int val); +void gicd_write_isactiver(uintptr_t base, unsigned int id, unsigned int val); +void gicd_write_icactiver(uintptr_t base, unsigned int id, unsigned int val); +void gicd_write_ipriorityr(uintptr_t base, unsigned int id, unsigned int val); +void gicd_write_icfgr(uintptr_t base, unsigned int id, unsigned int val); +void gicd_write_nsacr(uintptr_t base, unsigned int id, unsigned int val); +void gicd_write_spendsgir(uintptr_t base, unsigned int id, unsigned int val); +void gicd_write_cpendsgir(uintptr_t base, unsigned int id, unsigned int val); +void gicd_write_itargetsr(uintptr_t base, unsigned int id, unsigned int val); + +/******************************************************************************* + * GIC Distributor function prototypes for accessing the GIC registers + * corresponding to a single interrupt ID. These functions use bitwise + * operations or appropriate register accesses to modify or return + * the bit-field corresponding the single interrupt ID. + ******************************************************************************/ +unsigned int gicd_get_igroupr(uintptr_t base, unsigned int id); +void gicd_set_igroupr(uintptr_t base, unsigned int id); +void gicd_clr_igroupr(uintptr_t base, unsigned int id); +void gicd_set_isenabler(uintptr_t base, unsigned int id); +void gicd_set_icenabler(uintptr_t base, unsigned int id); +void gicd_set_ispendr(uintptr_t base, unsigned int id); +void gicd_set_icpendr(uintptr_t base, unsigned int id); +unsigned int gicd_get_isactiver(uintptr_t base, unsigned int id); +void gicd_set_isactiver(uintptr_t base, unsigned int id); +void gicd_set_icactiver(uintptr_t base, unsigned int id); +void gicd_set_ipriorityr(uintptr_t base, unsigned int id, unsigned int pri); +void gicd_set_icfgr(uintptr_t base, unsigned int id, unsigned int cfg); + +#endif /* GIC_COMMON_PRIVATE_H */ diff --git a/drivers/arm/gic/v2/gicdv2_helpers.c b/drivers/arm/gic/v2/gicdv2_helpers.c new file mode 100644 index 0000000..db9ba87 --- /dev/null +++ b/drivers/arm/gic/v2/gicdv2_helpers.c @@ -0,0 +1,340 @@ +/* + * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> + +#include <drivers/arm/gic_common.h> +#include <lib/mmio.h> + +#include "../common/gic_common_private.h" + +/******************************************************************************* + * GIC Distributor interface accessors for reading entire registers + ******************************************************************************/ +/* + * Accessor to read the GIC Distributor IGROUPR corresponding to the interrupt + * `id`, 32 interrupt ids at a time. + */ +unsigned int gicd_read_igroupr(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> IGROUPR_SHIFT; + + return mmio_read_32(base + GICD_IGROUPR + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ISENABLER corresponding to the + * interrupt `id`, 32 interrupt ids at a time. + */ +unsigned int gicd_read_isenabler(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ISENABLER_SHIFT; + + return mmio_read_32(base + GICD_ISENABLER + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ICENABLER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_icenabler(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ICENABLER_SHIFT; + + return mmio_read_32(base + GICD_ICENABLER + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ISPENDR corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_ispendr(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ISPENDR_SHIFT; + + return mmio_read_32(base + GICD_ISPENDR + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ICPENDR corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_icpendr(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ICPENDR_SHIFT; + + return mmio_read_32(base + GICD_ICPENDR + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ISACTIVER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_isactiver(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ISACTIVER_SHIFT; + + return mmio_read_32(base + GICD_ISACTIVER + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ICACTIVER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_icactiver(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ICACTIVER_SHIFT; + + return mmio_read_32(base + GICD_ICACTIVER + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor IPRIORITYR corresponding to the + * interrupt `id`, 4 interrupt IDs at a time. + */ +unsigned int gicd_read_ipriorityr(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> IPRIORITYR_SHIFT; + + return mmio_read_32(base + GICD_IPRIORITYR + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor ICGFR corresponding to the + * interrupt `id`, 16 interrupt IDs at a time. + */ +unsigned int gicd_read_icfgr(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> ICFGR_SHIFT; + + return mmio_read_32(base + GICD_ICFGR + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor NSACR corresponding to the + * interrupt `id`, 16 interrupt IDs at a time. + */ +unsigned int gicd_read_nsacr(uintptr_t base, unsigned int id) +{ + unsigned int n = id >> NSACR_SHIFT; + + return mmio_read_32(base + GICD_NSACR + (n << 2)); +} + +/******************************************************************************* + * GIC Distributor interface accessors for writing entire registers + ******************************************************************************/ +/* + * Accessor to write the GIC Distributor IGROUPR corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_igroupr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> IGROUPR_SHIFT; + + mmio_write_32(base + GICD_IGROUPR + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ISENABLER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_isenabler(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ISENABLER_SHIFT; + + mmio_write_32(base + GICD_ISENABLER + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ICENABLER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_icenabler(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ICENABLER_SHIFT; + + mmio_write_32(base + GICD_ICENABLER + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ISPENDR corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_ispendr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ISPENDR_SHIFT; + + mmio_write_32(base + GICD_ISPENDR + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ICPENDR corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_icpendr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ICPENDR_SHIFT; + + mmio_write_32(base + GICD_ICPENDR + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ISACTIVER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_isactiver(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ISACTIVER_SHIFT; + + mmio_write_32(base + GICD_ISACTIVER + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ICACTIVER corresponding to the + * interrupt `id`, 32 interrupt IDs at a time. + */ +void gicd_write_icactiver(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ICACTIVER_SHIFT; + + mmio_write_32(base + GICD_ICACTIVER + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor IPRIORITYR corresponding to the + * interrupt `id`, 4 interrupt IDs at a time. + */ +void gicd_write_ipriorityr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> IPRIORITYR_SHIFT; + + mmio_write_32(base + GICD_IPRIORITYR + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor ICFGR corresponding to the + * interrupt `id`, 16 interrupt IDs at a time. + */ +void gicd_write_icfgr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> ICFGR_SHIFT; + + mmio_write_32(base + GICD_ICFGR + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor NSACR corresponding to the + * interrupt `id`, 16 interrupt IDs at a time. + */ +void gicd_write_nsacr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned int n = id >> NSACR_SHIFT; + + mmio_write_32(base + GICD_NSACR + (n << 2), val); +} + +/******************************************************************************* + * GIC Distributor functions for accessing the GIC registers + * corresponding to a single interrupt ID. These functions use bitwise + * operations or appropriate register accesses to modify or return + * the bit-field corresponding the single interrupt ID. + ******************************************************************************/ +unsigned int gicd_get_igroupr(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << IGROUPR_SHIFT) - 1U); + unsigned int reg_val = gicd_read_igroupr(base, id); + + return (reg_val >> bit_num) & 0x1U; +} + +void gicd_set_igroupr(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << IGROUPR_SHIFT) - 1U); + unsigned int reg_val = gicd_read_igroupr(base, id); + + gicd_write_igroupr(base, id, reg_val | (1U << bit_num)); +} + +void gicd_clr_igroupr(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << IGROUPR_SHIFT) - 1U); + unsigned int reg_val = gicd_read_igroupr(base, id); + + gicd_write_igroupr(base, id, reg_val & ~(1U << bit_num)); +} + +void gicd_set_isenabler(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ISENABLER_SHIFT) - 1U); + + gicd_write_isenabler(base, id, (1U << bit_num)); +} + +void gicd_set_icenabler(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ICENABLER_SHIFT) - 1U); + + gicd_write_icenabler(base, id, (1U << bit_num)); +} + +void gicd_set_ispendr(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ISPENDR_SHIFT) - 1U); + + gicd_write_ispendr(base, id, (1U << bit_num)); +} + +void gicd_set_icpendr(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ICPENDR_SHIFT) - 1U); + + gicd_write_icpendr(base, id, (1U << bit_num)); +} + +unsigned int gicd_get_isactiver(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ISACTIVER_SHIFT) - 1U); + unsigned int reg_val = gicd_read_isactiver(base, id); + + return (reg_val >> bit_num) & 0x1U; +} + +void gicd_set_isactiver(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ISACTIVER_SHIFT) - 1U); + + gicd_write_isactiver(base, id, (1U << bit_num)); +} + +void gicd_set_icactiver(uintptr_t base, unsigned int id) +{ + unsigned int bit_num = id & ((1U << ICACTIVER_SHIFT) - 1U); + + gicd_write_icactiver(base, id, (1U << bit_num)); +} + +void gicd_set_ipriorityr(uintptr_t base, unsigned int id, unsigned int pri) +{ + uint8_t val = pri & GIC_PRI_MASK; + + mmio_write_8(base + GICD_IPRIORITYR + id, val); +} + +void gicd_set_icfgr(uintptr_t base, unsigned int id, unsigned int cfg) +{ + /* Interrupt configuration is a 2-bit field */ + unsigned int bit_num = id & ((1U << ICFGR_SHIFT) - 1U); + unsigned int bit_shift = bit_num << 1; + + uint32_t reg_val = gicd_read_icfgr(base, id); + + /* Clear the field, and insert required configuration */ + reg_val &= ~(GIC_CFG_MASK << bit_shift); + reg_val |= ((cfg & GIC_CFG_MASK) << bit_shift); + + gicd_write_icfgr(base, id, reg_val); +} diff --git a/drivers/arm/gic/v2/gicv2.mk b/drivers/arm/gic/v2/gicv2.mk new file mode 100644 index 0000000..49996bb --- /dev/null +++ b/drivers/arm/gic/v2/gicv2.mk @@ -0,0 +1,15 @@ +# +# Copyright (c) 2020, Arm Limited. All rights reserved. +# +# SPDX-License-Identifier: BSD-3-Clause +# + +# No support for extended PPI and SPI range +GIC_EXT_INTID := 0 + +GICV2_SOURCES += drivers/arm/gic/v2/gicv2_main.c \ + drivers/arm/gic/v2/gicv2_helpers.c \ + drivers/arm/gic/v2/gicdv2_helpers.c + +# Set GICv2 build option +$(eval $(call add_define,GIC_EXT_INTID))
\ No newline at end of file diff --git a/drivers/arm/gic/v2/gicv2_helpers.c b/drivers/arm/gic/v2/gicv2_helpers.c new file mode 100644 index 0000000..751316c --- /dev/null +++ b/drivers/arm/gic/v2/gicv2_helpers.c @@ -0,0 +1,220 @@ +/* + * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> + +#include <arch.h> +#include <common/debug.h> +#include <common/interrupt_props.h> +#include <drivers/arm/gic_common.h> +#include <drivers/arm/gicv2.h> + +#include "../common/gic_common_private.h" +#include "gicv2_private.h" + +/* + * Accessor to read the GIC Distributor ITARGETSR corresponding to the + * interrupt `id`, 4 interrupt IDs at a time. + */ +unsigned int gicd_read_itargetsr(uintptr_t base, unsigned int id) +{ + unsigned n = id >> ITARGETSR_SHIFT; + return mmio_read_32(base + GICD_ITARGETSR + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor CPENDSGIR corresponding to the + * interrupt `id`, 4 interrupt IDs at a time. + */ +unsigned int gicd_read_cpendsgir(uintptr_t base, unsigned int id) +{ + unsigned n = id >> CPENDSGIR_SHIFT; + return mmio_read_32(base + GICD_CPENDSGIR + (n << 2)); +} + +/* + * Accessor to read the GIC Distributor SPENDSGIR corresponding to the + * interrupt `id`, 4 interrupt IDs at a time. + */ +unsigned int gicd_read_spendsgir(uintptr_t base, unsigned int id) +{ + unsigned n = id >> SPENDSGIR_SHIFT; + return mmio_read_32(base + GICD_SPENDSGIR + (n << 2)); +} + +/* + * Accessor to write the GIC Distributor ITARGETSR corresponding to the + * interrupt `id`, 4 interrupt IDs at a time. + */ +void gicd_write_itargetsr(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned n = id >> ITARGETSR_SHIFT; + mmio_write_32(base + GICD_ITARGETSR + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor CPENDSGIR corresponding to the + * interrupt `id`, 4 interrupt IDs at a time. + */ +void gicd_write_cpendsgir(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned n = id >> CPENDSGIR_SHIFT; + mmio_write_32(base + GICD_CPENDSGIR + (n << 2), val); +} + +/* + * Accessor to write the GIC Distributor SPENDSGIR corresponding to the + * interrupt `id`, 4 interrupt IDs at a time. + */ +void gicd_write_spendsgir(uintptr_t base, unsigned int id, unsigned int val) +{ + unsigned n = id >> SPENDSGIR_SHIFT; + mmio_write_32(base + GICD_SPENDSGIR + (n << 2), val); +} + +/******************************************************************************* + * Get the current CPU bit mask from GICD_ITARGETSR0 + ******************************************************************************/ +unsigned int gicv2_get_cpuif_id(uintptr_t base) +{ + unsigned int val; + + val = gicd_read_itargetsr(base, 0); + return val & GIC_TARGET_CPU_MASK; +} + +/******************************************************************************* + * Helper function to configure the default attributes of SPIs. + ******************************************************************************/ +void gicv2_spis_configure_defaults(uintptr_t gicd_base) +{ + unsigned int index, num_ints; + + num_ints = gicd_read_typer(gicd_base); + num_ints &= TYPER_IT_LINES_NO_MASK; + num_ints = (num_ints + 1U) << 5; + + /* + * Treat all SPIs as G1NS by default. The number of interrupts is + * calculated as 32 * (IT_LINES + 1). We do 32 at a time. + */ + for (index = MIN_SPI_ID; index < num_ints; index += 32U) + gicd_write_igroupr(gicd_base, index, ~0U); + + /* Setup the default SPI priorities doing four at a time */ + for (index = MIN_SPI_ID; index < num_ints; index += 4U) + gicd_write_ipriorityr(gicd_base, + index, + GICD_IPRIORITYR_DEF_VAL); + + /* Treat all SPIs as level triggered by default, 16 at a time */ + for (index = MIN_SPI_ID; index < num_ints; index += 16U) + gicd_write_icfgr(gicd_base, index, 0U); +} + +/******************************************************************************* + * Helper function to configure properties of secure G0 SPIs. + ******************************************************************************/ +void gicv2_secure_spis_configure_props(uintptr_t gicd_base, + const interrupt_prop_t *interrupt_props, + unsigned int interrupt_props_num) +{ + unsigned int i; + const interrupt_prop_t *prop_desc; + + /* Make sure there's a valid property array */ + if (interrupt_props_num != 0U) + assert(interrupt_props != NULL); + + for (i = 0; i < interrupt_props_num; i++) { + prop_desc = &interrupt_props[i]; + + if (prop_desc->intr_num < MIN_SPI_ID) + continue; + + /* Configure this interrupt as a secure interrupt */ + assert(prop_desc->intr_grp == GICV2_INTR_GROUP0); + gicd_clr_igroupr(gicd_base, prop_desc->intr_num); + + /* Set the priority of this interrupt */ + gicd_set_ipriorityr(gicd_base, prop_desc->intr_num, + prop_desc->intr_pri); + + /* Target the secure interrupts to primary CPU */ + gicd_set_itargetsr(gicd_base, prop_desc->intr_num, + gicv2_get_cpuif_id(gicd_base)); + + /* Set interrupt configuration */ + gicd_set_icfgr(gicd_base, prop_desc->intr_num, + prop_desc->intr_cfg); + + /* Enable this interrupt */ + gicd_set_isenabler(gicd_base, prop_desc->intr_num); + } +} + +/******************************************************************************* + * Helper function to configure properties of secure G0 SGIs and PPIs. + ******************************************************************************/ +void gicv2_secure_ppi_sgi_setup_props(uintptr_t gicd_base, + const interrupt_prop_t *interrupt_props, + unsigned int interrupt_props_num) +{ + unsigned int i; + uint32_t sec_ppi_sgi_mask = 0; + const interrupt_prop_t *prop_desc; + + /* Make sure there's a valid property array */ + if (interrupt_props_num != 0U) + assert(interrupt_props != NULL); + + /* + * Disable all SGIs (imp. def.)/PPIs before configuring them. This is a + * more scalable approach as it avoids clearing the enable bits in the + * GICD_CTLR. + */ + gicd_write_icenabler(gicd_base, 0U, ~0U); + + /* Setup the default PPI/SGI priorities doing four at a time */ + for (i = 0U; i < MIN_SPI_ID; i += 4U) + gicd_write_ipriorityr(gicd_base, i, GICD_IPRIORITYR_DEF_VAL); + + for (i = 0U; i < interrupt_props_num; i++) { + prop_desc = &interrupt_props[i]; + + if (prop_desc->intr_num >= MIN_SPI_ID) + continue; + + /* Configure this interrupt as a secure interrupt */ + assert(prop_desc->intr_grp == GICV2_INTR_GROUP0); + + /* + * Set interrupt configuration for PPIs. Configuration for SGIs + * are ignored. + */ + if ((prop_desc->intr_num >= MIN_PPI_ID) && + (prop_desc->intr_num < MIN_SPI_ID)) { + gicd_set_icfgr(gicd_base, prop_desc->intr_num, + prop_desc->intr_cfg); + } + + /* We have an SGI or a PPI. They are Group0 at reset */ + sec_ppi_sgi_mask |= (1u << prop_desc->intr_num); + + /* Set the priority of this interrupt */ + gicd_set_ipriorityr(gicd_base, prop_desc->intr_num, + prop_desc->intr_pri); + } + + /* + * Invert the bitmask to create a mask for non-secure PPIs and SGIs. + * Program the GICD_IGROUPR0 with this bit mask. + */ + gicd_write_igroupr(gicd_base, 0, ~sec_ppi_sgi_mask); + + /* Enable the Group 0 SGIs and PPIs */ + gicd_write_isenabler(gicd_base, 0, sec_ppi_sgi_mask); +} diff --git a/drivers/arm/gic/v2/gicv2_main.c b/drivers/arm/gic/v2/gicv2_main.c new file mode 100644 index 0000000..696bede --- /dev/null +++ b/drivers/arm/gic/v2/gicv2_main.c @@ -0,0 +1,556 @@ +/* + * Copyright (c) 2015-2023, Arm Limited and Contributors. All rights reserved. + * Portions copyright (c) 2021-2022, ProvenRun S.A.S. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> +#include <stdbool.h> + +#include <arch.h> +#include <arch_helpers.h> +#include <common/debug.h> +#include <common/interrupt_props.h> +#include <drivers/arm/gic_common.h> +#include <drivers/arm/gicv2.h> +#include <lib/spinlock.h> + +#include "../common/gic_common_private.h" +#include "gicv2_private.h" + +static const gicv2_driver_data_t *driver_data; + +/* + * Spinlock to guard registers needing read-modify-write. APIs protected by this + * spinlock are used either at boot time (when only a single CPU is active), or + * when the system is fully coherent. + */ +static spinlock_t gic_lock; + +/******************************************************************************* + * Enable secure interrupts and use FIQs to route them. Disable legacy bypass + * and set the priority mask register to allow all interrupts to trickle in. + ******************************************************************************/ +void gicv2_cpuif_enable(void) +{ + unsigned int val; + + assert(driver_data != NULL); + assert(driver_data->gicc_base != 0U); + + /* + * Enable the Group 0 interrupts, FIQEn and disable Group 0/1 + * bypass. + */ + val = CTLR_ENABLE_G0_BIT | FIQ_EN_BIT | FIQ_BYP_DIS_GRP0; + val |= IRQ_BYP_DIS_GRP0 | FIQ_BYP_DIS_GRP1 | IRQ_BYP_DIS_GRP1; + + /* Program the idle priority in the PMR */ + gicc_write_pmr(driver_data->gicc_base, GIC_PRI_MASK); + gicc_write_ctlr(driver_data->gicc_base, val); +} + +/******************************************************************************* + * Place the cpu interface in a state where it can never make a cpu exit wfi as + * as result of an asserted interrupt. This is critical for powering down a cpu + ******************************************************************************/ +void gicv2_cpuif_disable(void) +{ + unsigned int val; + + assert(driver_data != NULL); + assert(driver_data->gicc_base != 0U); + + /* Disable secure, non-secure interrupts and disable their bypass */ + val = gicc_read_ctlr(driver_data->gicc_base); + val &= ~(CTLR_ENABLE_G0_BIT | CTLR_ENABLE_G1_BIT); + val |= FIQ_BYP_DIS_GRP1 | FIQ_BYP_DIS_GRP0; + val |= IRQ_BYP_DIS_GRP0 | IRQ_BYP_DIS_GRP1; + gicc_write_ctlr(driver_data->gicc_base, val); +} + +/******************************************************************************* + * Per cpu gic distributor setup which will be done by all cpus after a cold + * boot/hotplug. This marks out the secure SPIs and PPIs & enables them. + ******************************************************************************/ +void gicv2_pcpu_distif_init(void) +{ + unsigned int ctlr; + + assert(driver_data != NULL); + assert(driver_data->gicd_base != 0U); + + gicv2_secure_ppi_sgi_setup_props(driver_data->gicd_base, + driver_data->interrupt_props, + driver_data->interrupt_props_num); + + /* Enable G0 interrupts if not already */ + ctlr = gicd_read_ctlr(driver_data->gicd_base); + if ((ctlr & CTLR_ENABLE_G0_BIT) == 0U) { + gicd_write_ctlr(driver_data->gicd_base, + ctlr | CTLR_ENABLE_G0_BIT); + } +} + +/******************************************************************************* + * Global gic distributor init which will be done by the primary cpu after a + * cold boot. It marks out the secure SPIs, PPIs & SGIs and enables them. It + * then enables the secure GIC distributor interface. + ******************************************************************************/ +void gicv2_distif_init(void) +{ + unsigned int ctlr; + + assert(driver_data != NULL); + assert(driver_data->gicd_base != 0U); + + /* Disable the distributor before going further */ + ctlr = gicd_read_ctlr(driver_data->gicd_base); + gicd_write_ctlr(driver_data->gicd_base, + ctlr & ~(CTLR_ENABLE_G0_BIT | CTLR_ENABLE_G1_BIT)); + + /* Set the default attribute of all SPIs */ + gicv2_spis_configure_defaults(driver_data->gicd_base); + + gicv2_secure_spis_configure_props(driver_data->gicd_base, + driver_data->interrupt_props, + driver_data->interrupt_props_num); + + + /* Re-enable the secure SPIs now that they have been configured */ + gicd_write_ctlr(driver_data->gicd_base, ctlr | CTLR_ENABLE_G0_BIT); +} + +/******************************************************************************* + * Initialize the ARM GICv2 driver with the provided platform inputs + ******************************************************************************/ +void gicv2_driver_init(const gicv2_driver_data_t *plat_driver_data) +{ + unsigned int gic_version; + + assert(plat_driver_data != NULL); + assert(plat_driver_data->gicd_base != 0U); + assert(plat_driver_data->gicc_base != 0U); + + assert(plat_driver_data->interrupt_props_num > 0 ? + plat_driver_data->interrupt_props != NULL : 1); + + /* Ensure that this is a GICv2 system */ + gic_version = gicd_read_pidr2(plat_driver_data->gicd_base); + gic_version = (gic_version >> PIDR2_ARCH_REV_SHIFT) + & PIDR2_ARCH_REV_MASK; + + /* + * GICv1 with security extension complies with trusted firmware + * GICv2 driver as far as virtualization and few tricky power + * features are not used. GICv2 features that are not supported + * by GICv1 with Security Extensions are: + * - virtual interrupt support. + * - wake up events. + * - writeable GIC state register (for power sequences) + * - interrupt priority drop. + * - interrupt signal bypass. + */ + assert((gic_version == ARCH_REV_GICV2) || + (gic_version == ARCH_REV_GICV1)); + + driver_data = plat_driver_data; + + /* + * The GIC driver data is initialized by the primary CPU with caches + * enabled. When the secondary CPU boots up, it initializes the + * GICC/GICR interface with the caches disabled. Hence flush the + * driver_data to ensure coherency. This is not required if the + * platform has HW_ASSISTED_COHERENCY or WARMBOOT_ENABLE_DCACHE_EARLY + * enabled. + */ +#if !(HW_ASSISTED_COHERENCY || WARMBOOT_ENABLE_DCACHE_EARLY) + flush_dcache_range((uintptr_t) &driver_data, sizeof(driver_data)); + flush_dcache_range((uintptr_t) driver_data, sizeof(*driver_data)); +#endif + INFO("ARM GICv2 driver initialized\n"); +} + +/****************************************************************************** + * This function returns whether FIQ is enabled in the GIC CPU interface. + *****************************************************************************/ +unsigned int gicv2_is_fiq_enabled(void) +{ + unsigned int gicc_ctlr; + + assert(driver_data != NULL); + assert(driver_data->gicc_base != 0U); + + gicc_ctlr = gicc_read_ctlr(driver_data->gicc_base); + return (gicc_ctlr >> FIQ_EN_SHIFT) & 0x1U; +} + +/******************************************************************************* + * This function returns the type of the highest priority pending interrupt at + * the GIC cpu interface. The return values can be one of the following : + * PENDING_G1_INTID : The interrupt type is non secure Group 1. + * 0 - 1019 : The interrupt type is secure Group 0. + * GIC_SPURIOUS_INTERRUPT : there is no pending interrupt with + * sufficient priority to be signaled + ******************************************************************************/ +unsigned int gicv2_get_pending_interrupt_type(void) +{ + assert(driver_data != NULL); + assert(driver_data->gicc_base != 0U); + + return gicc_read_hppir(driver_data->gicc_base) & INT_ID_MASK; +} + +/******************************************************************************* + * This function returns the id of the highest priority pending interrupt at + * the GIC cpu interface. GIC_SPURIOUS_INTERRUPT is returned when there is no + * interrupt pending. + ******************************************************************************/ +unsigned int gicv2_get_pending_interrupt_id(void) +{ + unsigned int id; + + assert(driver_data != NULL); + assert(driver_data->gicc_base != 0U); + + id = gicc_read_hppir(driver_data->gicc_base) & INT_ID_MASK; + + /* + * Find out which non-secure interrupt it is under the assumption that + * the GICC_CTLR.AckCtl bit is 0. + */ + if (id == PENDING_G1_INTID) + id = gicc_read_ahppir(driver_data->gicc_base) & INT_ID_MASK; + + return id; +} + +/******************************************************************************* + * This functions reads the GIC cpu interface Interrupt Acknowledge register + * to start handling the pending secure 0 interrupt. It returns the + * contents of the IAR. + ******************************************************************************/ +unsigned int gicv2_acknowledge_interrupt(void) +{ + assert(driver_data != NULL); + assert(driver_data->gicc_base != 0U); + + return gicc_read_IAR(driver_data->gicc_base); +} + +/******************************************************************************* + * This functions writes the GIC cpu interface End Of Interrupt register with + * the passed value to finish handling the active secure group 0 interrupt. + ******************************************************************************/ +void gicv2_end_of_interrupt(unsigned int id) +{ + assert(driver_data != NULL); + assert(driver_data->gicc_base != 0U); + + /* + * Ensure the write to peripheral registers are *complete* before the write + * to GIC_EOIR. + * + * Note: The completion guarantee depends on various factors of system design + * and the barrier is the best core can do by which execution of further + * instructions waits till the barrier is alive. + */ + dsbishst(); + gicc_write_EOIR(driver_data->gicc_base, id); +} + +/******************************************************************************* + * This function returns the type of the interrupt id depending upon the group + * this interrupt has been configured under by the interrupt controller i.e. + * group0 secure or group1 non secure. It returns zero for Group 0 secure and + * one for Group 1 non secure interrupt. + ******************************************************************************/ +unsigned int gicv2_get_interrupt_group(unsigned int id) +{ + assert(driver_data != NULL); + assert(driver_data->gicd_base != 0U); + + return gicd_get_igroupr(driver_data->gicd_base, id); +} + +/******************************************************************************* + * This function returns the priority of the interrupt the processor is + * currently servicing. + ******************************************************************************/ +unsigned int gicv2_get_running_priority(void) +{ + assert(driver_data != NULL); + assert(driver_data->gicc_base != 0U); + + return gicc_read_rpr(driver_data->gicc_base); +} + +/******************************************************************************* + * This function sets the GICv2 target mask pattern for the current PE. The PE + * target mask is used to translate linear PE index (returned by platform core + * position) to a bit mask used when targeting interrupts to a PE (for example + * when raising SGIs and routing SPIs). + ******************************************************************************/ +void gicv2_set_pe_target_mask(unsigned int proc_num) +{ + assert(driver_data != NULL); + assert(driver_data->gicd_base != 0U); + assert(driver_data->target_masks != NULL); + assert(proc_num < GICV2_MAX_TARGET_PE); + assert(proc_num < driver_data->target_masks_num); + + /* Return if the target mask is already populated */ + if (driver_data->target_masks[proc_num] != 0U) + return; + + /* + * Update target register corresponding to this CPU and flush for it to + * be visible to other CPUs. + */ + if (driver_data->target_masks[proc_num] == 0U) { + driver_data->target_masks[proc_num] = + gicv2_get_cpuif_id(driver_data->gicd_base); +#if !(HW_ASSISTED_COHERENCY || WARMBOOT_ENABLE_DCACHE_EARLY) + /* + * PEs only update their own masks. Primary updates it with + * caches on. But because secondaries does it with caches off, + * all updates go to memory directly, and there's no danger of + * secondaries overwriting each others' mask, despite + * target_masks[] not being cache line aligned. + */ + flush_dcache_range((uintptr_t) + &driver_data->target_masks[proc_num], + sizeof(driver_data->target_masks[proc_num])); +#endif + } +} + +/******************************************************************************* + * This function returns the active status of the interrupt (either because the + * state is active, or active and pending). + ******************************************************************************/ +unsigned int gicv2_get_interrupt_active(unsigned int id) +{ + assert(driver_data != NULL); + assert(driver_data->gicd_base != 0U); + assert(id <= MAX_SPI_ID); + + return gicd_get_isactiver(driver_data->gicd_base, id); +} + +/******************************************************************************* + * This function enables the interrupt identified by id. + ******************************************************************************/ +void gicv2_enable_interrupt(unsigned int id) +{ + assert(driver_data != NULL); + assert(driver_data->gicd_base != 0U); + assert(id <= MAX_SPI_ID); + + /* + * Ensure that any shared variable updates depending on out of band + * interrupt trigger are observed before enabling interrupt. + */ + dsbishst(); + gicd_set_isenabler(driver_data->gicd_base, id); +} + +/******************************************************************************* + * This function disables the interrupt identified by id. + ******************************************************************************/ +void gicv2_disable_interrupt(unsigned int id) +{ + assert(driver_data != NULL); + assert(driver_data->gicd_base != 0U); + assert(id <= MAX_SPI_ID); + + /* + * Disable interrupt, and ensure that any shared variable updates + * depending on out of band interrupt trigger are observed afterwards. + */ + gicd_set_icenabler(driver_data->gicd_base, id); + dsbishst(); +} + +/******************************************************************************* + * This function sets the interrupt priority as supplied for the given interrupt + * id. + ******************************************************************************/ +void gicv2_set_interrupt_priority(unsigned int id, unsigned int priority) +{ + assert(driver_data != NULL); + assert(driver_data->gicd_base != 0U); + assert(id <= MAX_SPI_ID); + + gicd_set_ipriorityr(driver_data->gicd_base, id, priority); +} + +/******************************************************************************* + * This function assigns group for the interrupt identified by id. The group can + * be any of GICV2_INTR_GROUP* + ******************************************************************************/ +void gicv2_set_interrupt_group(unsigned int id, unsigned int group) +{ + assert(driver_data != NULL); + assert(driver_data->gicd_base != 0U); + assert(id <= MAX_SPI_ID); + + /* Serialize read-modify-write to Distributor registers */ + spin_lock(&gic_lock); + switch (group) { + case GICV2_INTR_GROUP1: + gicd_set_igroupr(driver_data->gicd_base, id); + break; + case GICV2_INTR_GROUP0: + gicd_clr_igroupr(driver_data->gicd_base, id); + break; + default: + assert(false); + break; + } + spin_unlock(&gic_lock); +} + +/******************************************************************************* + * This function raises the specified SGI to requested targets. + * + * The proc_num parameter must be the linear index of the target PE in the + * system. + ******************************************************************************/ +void gicv2_raise_sgi(int sgi_num, bool ns, int proc_num) +{ + unsigned int sgir_val, target; + + assert(driver_data != NULL); + assert(proc_num >= 0); + assert(proc_num < (int)GICV2_MAX_TARGET_PE); + assert(driver_data->gicd_base != 0U); + + /* + * Target masks array must have been supplied, and the core position + * should be valid. + */ + assert(driver_data->target_masks != NULL); + assert(proc_num < (int)driver_data->target_masks_num); + + /* Don't raise SGI if the mask hasn't been populated */ + target = driver_data->target_masks[proc_num]; + assert(target != 0U); + + sgir_val = GICV2_SGIR_VALUE(SGIR_TGT_SPECIFIC, target, ns, sgi_num); + + /* + * Ensure that any shared variable updates depending on out of band + * interrupt trigger are observed before raising SGI. + */ + dsbishst(); + gicd_write_sgir(driver_data->gicd_base, sgir_val); +} + +/******************************************************************************* + * This function sets the interrupt routing for the given SPI interrupt id. + * The interrupt routing is specified in routing mode. The proc_num parameter is + * linear index of the PE to target SPI. When proc_num < 0, the SPI may target + * all PEs. + ******************************************************************************/ +void gicv2_set_spi_routing(unsigned int id, int proc_num) +{ + unsigned int target; + + assert(driver_data != NULL); + assert(driver_data->gicd_base != 0U); + + assert((id >= MIN_SPI_ID) && (id <= MAX_SPI_ID)); + + /* + * Target masks array must have been supplied, and the core position + * should be valid. + */ + assert(driver_data->target_masks != NULL); + assert(proc_num < (int)GICV2_MAX_TARGET_PE); + assert(driver_data->target_masks_num < INT_MAX); + assert(proc_num < (int)driver_data->target_masks_num); + + if (proc_num < 0) { + /* Target all PEs */ + target = GIC_TARGET_CPU_MASK; + } else { + /* Don't route interrupt if the mask hasn't been populated */ + target = driver_data->target_masks[proc_num]; + assert(target != 0U); + } + + gicd_set_itargetsr(driver_data->gicd_base, id, target); +} + +/******************************************************************************* + * This function clears the pending status of an interrupt identified by id. + ******************************************************************************/ +void gicv2_clear_interrupt_pending(unsigned int id) +{ + assert(driver_data != NULL); + assert(driver_data->gicd_base != 0U); + + /* SGIs can't be cleared pending */ + assert(id >= MIN_PPI_ID); + + /* + * Clear pending interrupt, and ensure that any shared variable updates + * depending on out of band interrupt trigger are observed afterwards. + */ + gicd_set_icpendr(driver_data->gicd_base, id); + dsbishst(); +} + +/******************************************************************************* + * This function sets the pending status of an interrupt identified by id. + ******************************************************************************/ +void gicv2_set_interrupt_pending(unsigned int id) +{ + assert(driver_data != NULL); + assert(driver_data->gicd_base != 0U); + + /* SGIs can't be cleared pending */ + assert(id >= MIN_PPI_ID); + + /* + * Ensure that any shared variable updates depending on out of band + * interrupt trigger are observed before setting interrupt pending. + */ + dsbishst(); + gicd_set_ispendr(driver_data->gicd_base, id); +} + +/******************************************************************************* + * This function sets the PMR register with the supplied value. Returns the + * original PMR. + ******************************************************************************/ +unsigned int gicv2_set_pmr(unsigned int mask) +{ + unsigned int old_mask; + + assert(driver_data != NULL); + assert(driver_data->gicc_base != 0U); + + old_mask = gicc_read_pmr(driver_data->gicc_base); + + /* + * Order memory updates w.r.t. PMR write, and ensure they're visible + * before potential out of band interrupt trigger because of PMR update. + */ + dmbishst(); + gicc_write_pmr(driver_data->gicc_base, mask); + dsbishst(); + + return old_mask; +} + +/******************************************************************************* + * This function updates single interrupt configuration to be level/edge + * triggered + ******************************************************************************/ +void gicv2_interrupt_set_cfg(unsigned int id, unsigned int cfg) +{ + gicd_set_icfgr(driver_data->gicd_base, id, cfg); +} diff --git a/drivers/arm/gic/v2/gicv2_private.h b/drivers/arm/gic/v2/gicv2_private.h new file mode 100644 index 0000000..0fbdab0 --- /dev/null +++ b/drivers/arm/gic/v2/gicv2_private.h @@ -0,0 +1,150 @@ +/* + * Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef GICV2_PRIVATE_H +#define GICV2_PRIVATE_H + +#include <stdint.h> + +#include <drivers/arm/gicv2.h> +#include <lib/mmio.h> + +/******************************************************************************* + * Private function prototypes + ******************************************************************************/ +void gicv2_spis_configure_defaults(uintptr_t gicd_base); +void gicv2_secure_spis_configure_props(uintptr_t gicd_base, + const interrupt_prop_t *interrupt_props, + unsigned int interrupt_props_num); +void gicv2_secure_ppi_sgi_setup_props(uintptr_t gicd_base, + const interrupt_prop_t *interrupt_props, + unsigned int interrupt_props_num); +unsigned int gicv2_get_cpuif_id(uintptr_t base); + +/******************************************************************************* + * GIC Distributor interface accessors for reading entire registers + ******************************************************************************/ +static inline unsigned int gicd_read_pidr2(uintptr_t base) +{ + return mmio_read_32(base + GICD_PIDR2_GICV2); +} + +/******************************************************************************* + * GIC Distributor interface accessors for writing entire registers + ******************************************************************************/ +static inline unsigned int gicd_get_itargetsr(uintptr_t base, unsigned int id) +{ + return mmio_read_8(base + GICD_ITARGETSR + id); +} + +static inline void gicd_set_itargetsr(uintptr_t base, unsigned int id, + unsigned int target) +{ + uint8_t val = target & GIC_TARGET_CPU_MASK; + + mmio_write_8(base + GICD_ITARGETSR + id, val); +} + +static inline void gicd_write_sgir(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICD_SGIR, val); +} + +/******************************************************************************* + * GIC CPU interface accessors for reading entire registers + ******************************************************************************/ + +static inline unsigned int gicc_read_ctlr(uintptr_t base) +{ + return mmio_read_32(base + GICC_CTLR); +} + +static inline unsigned int gicc_read_pmr(uintptr_t base) +{ + return mmio_read_32(base + GICC_PMR); +} + +static inline unsigned int gicc_read_BPR(uintptr_t base) +{ + return mmio_read_32(base + GICC_BPR); +} + +static inline unsigned int gicc_read_IAR(uintptr_t base) +{ + return mmio_read_32(base + GICC_IAR); +} + +static inline unsigned int gicc_read_EOIR(uintptr_t base) +{ + return mmio_read_32(base + GICC_EOIR); +} + +static inline unsigned int gicc_read_hppir(uintptr_t base) +{ + return mmio_read_32(base + GICC_HPPIR); +} + +static inline unsigned int gicc_read_ahppir(uintptr_t base) +{ + return mmio_read_32(base + GICC_AHPPIR); +} + +static inline unsigned int gicc_read_dir(uintptr_t base) +{ + return mmio_read_32(base + GICC_DIR); +} + +static inline unsigned int gicc_read_iidr(uintptr_t base) +{ + return mmio_read_32(base + GICC_IIDR); +} + +static inline unsigned int gicc_read_rpr(uintptr_t base) +{ + return mmio_read_32(base + GICC_RPR); +} + +/******************************************************************************* + * GIC CPU interface accessors for writing entire registers + ******************************************************************************/ + +static inline void gicc_write_ctlr(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICC_CTLR, val); +} + +static inline void gicc_write_pmr(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICC_PMR, val); +} + +static inline void gicc_write_BPR(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICC_BPR, val); +} + + +static inline void gicc_write_IAR(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICC_IAR, val); +} + +static inline void gicc_write_EOIR(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICC_EOIR, val); +} + +static inline void gicc_write_hppir(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICC_HPPIR, val); +} + +static inline void gicc_write_dir(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICC_DIR, val); +} + +#endif /* GICV2_PRIVATE_H */ diff --git a/drivers/arm/gic/v3/arm_gicv3_common.c b/drivers/arm/gic/v3/arm_gicv3_common.c new file mode 100644 index 0000000..4489892 --- /dev/null +++ b/drivers/arm/gic/v3/arm_gicv3_common.c @@ -0,0 +1,115 @@ +/* + * Copyright (c) 2017, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/* + * Driver for implementation defined features that are identical in ARM GICv3 +* implementations (GIC-500 and GIC-600 for now). This driver only overrides +* APIs that are different to those generic ones in GICv3 driver. + */ + +#include <assert.h> + +#include <arch_helpers.h> +#include <drivers/arm/arm_gicv3_common.h> +#include <drivers/arm/gicv3.h> + +#include "gicv3_private.h" + +/* + * Flush the internal GIC cache of the LPIs pending tables to memory before + * saving the state of the Redistributor. This is required before powering off + * the GIC when the pending status must be preserved. + * `rdist_proc_num` is the processor number corresponding to the Redistributor of the + * current CPU. + */ +void arm_gicv3_distif_pre_save(unsigned int rdist_proc_num) +{ + uintptr_t gicr_base = 0; + + assert(gicv3_driver_data); + assert(gicv3_driver_data->rdistif_base_addrs); + + /* + * The GICR_WAKER.Sleep bit should be set only when both + * GICR_WAKER.ChildrenAsleep and GICR_WAKER.ProcessorSleep are set on + * all the Redistributors. + */ + for (unsigned int i = 0; i < gicv3_driver_data->rdistif_num; i++) { + gicr_base = gicv3_driver_data->rdistif_base_addrs[i]; + assert(gicr_base); + assert(gicr_read_waker(gicr_base) & WAKER_CA_BIT); + assert(gicr_read_waker(gicr_base) & WAKER_PS_BIT); + } + + gicr_base = gicv3_driver_data->rdistif_base_addrs[rdist_proc_num]; + /* + * According to the TRM, there is only one instance of the + * GICR_WAKER.Sleep and GICR_WAKER.Quiescent bits that can be accessed + * through any of the Redistributor. + */ + + /* + * Set GICR_WAKER.Sleep + * After this point, the system must be configured so that the + * wake_request signals for the right cores are asserted when a wakeup + * interrupt is detected. The GIC will not be able to do that anymore + * when the GICR_WAKER.Sleep bit is set to 1. + */ + gicr_write_waker(gicr_base, gicr_read_waker(gicr_base) | WAKER_SL_BIT); + + /* Wait until the GICR_WAKER.Quiescent bit is set */ + while (!(gicr_read_waker(gicr_base) & WAKER_QSC_BIT)) + ; +} + +/* + * Allow the LPIs pending state to be read back from the tables in memory after + * having restored the state of the GIC Redistributor. + */ +void arm_gicv3_distif_post_restore(unsigned int rdist_proc_num) +{ + uintptr_t gicr_base; + + assert(gicv3_driver_data); + assert(gicv3_driver_data->rdistif_base_addrs); + + /* + * According to the TRM, there is only one instance of the + * GICR_WAKER.Sleep and GICR_WAKER.Quiescent bits that can be accessed + * through any of the Redistributor. + */ + gicr_base = gicv3_driver_data->rdistif_base_addrs[rdist_proc_num]; + assert(gicr_base); + + /* + * If the GIC had power removed, the GICR_WAKER state will be reset. + * Since the GICR_WAKER.Sleep and GICR_WAKER.Quiescent bits are cleared, + * we can exit early. This also prevents the following assert from + * erroneously triggering. + */ + if (!(gicr_read_waker(gicr_base) & WAKER_SL_BIT)) + return; + + /* + * Writes to GICR_WAKER.Sleep bit are ignored if GICR_WAKER.Quiescent + * bit is not set. We should be alright on power on path, therefore + * coming out of sleep and Quiescent should be set, but we assert in + * case. + */ + assert(gicr_read_waker(gicr_base) & WAKER_QSC_BIT); + + /* Clear GICR_WAKER.Sleep */ + gicr_write_waker(gicr_base, gicr_read_waker(gicr_base) & ~WAKER_SL_BIT); + + /* + * We don't know if the effects of setting GICR_WAKER.Sleep bit is + * instantaneous, so we wait until the interface is not Quiescent + * anymore. + */ + while (gicr_read_waker(gicr_base) & WAKER_QSC_BIT) + ; +} + diff --git a/drivers/arm/gic/v3/gic-x00.c b/drivers/arm/gic/v3/gic-x00.c new file mode 100644 index 0000000..83ef32f --- /dev/null +++ b/drivers/arm/gic/v3/gic-x00.c @@ -0,0 +1,232 @@ +/* + * Copyright (c) 2017-2022, Arm Limited and Contributors. All rights reserved. + * Copyright (c) 2020, NVIDIA Corporation. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/* + * Driver for GIC-500 and GIC-600 specific features. This driver only + * overrides APIs that are different to those generic ones in GICv3 + * driver. + * + * GIC-600 supports independently power-gating redistributor interface. + */ + +#include <assert.h> + +#include <arch_helpers.h> +#include <common/debug.h> +#include <drivers/arm/arm_gicv3_common.h> +#include <drivers/arm/gicv3.h> + +#include "gicv3_private.h" + +/* GIC-600 specific register offsets */ +#define GICR_PWRR 0x24U + +/* GICR_PWRR fields */ +#define PWRR_RDPD_SHIFT 0 +#define PWRR_RDAG_SHIFT 1 +#define PWRR_RDGPD_SHIFT 2 +#define PWRR_RDGPO_SHIFT 3 + +#define PWRR_RDPD (1U << PWRR_RDPD_SHIFT) +#define PWRR_RDAG (1U << PWRR_RDAG_SHIFT) +#define PWRR_RDGPD (1U << PWRR_RDGPD_SHIFT) +#define PWRR_RDGPO (1U << PWRR_RDGPO_SHIFT) + +/* + * Values to write to GICR_PWRR register to power redistributor + * for operating through the core (GICR_PWRR.RDAG = 0) + */ +#define PWRR_ON (0U << PWRR_RDPD_SHIFT) +#define PWRR_OFF (1U << PWRR_RDPD_SHIFT) + +static bool gic600_errata_wa_2384374 __unused; + +#if GICV3_SUPPORT_GIC600 + +/* GIC-600/700 specific accessor functions */ +static void gicr_write_pwrr(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICR_PWRR, val); +} + +static uint32_t gicr_read_pwrr(uintptr_t base) +{ + return mmio_read_32(base + GICR_PWRR); +} + +static void gicr_wait_group_not_in_transit(uintptr_t base) +{ + uint32_t pwrr; + + do { + pwrr = gicr_read_pwrr(base); + + /* Check group not transitioning: RDGPD == RDGPO */ + } while (((pwrr & PWRR_RDGPD) >> PWRR_RDGPD_SHIFT) != + ((pwrr & PWRR_RDGPO) >> PWRR_RDGPO_SHIFT)); +} + +static void gic600_pwr_on(uintptr_t base) +{ + do { /* Wait until group not transitioning */ + gicr_wait_group_not_in_transit(base); + + /* Power on redistributor */ + gicr_write_pwrr(base, PWRR_ON); + + /* + * Wait until the power on state is reflected. + * If RDPD == 0 then powered on. + */ + } while ((gicr_read_pwrr(base) & PWRR_RDPD) != PWRR_ON); +} + +static void gic600_pwr_off(uintptr_t base) +{ + /* Wait until group not transitioning */ + gicr_wait_group_not_in_transit(base); + + /* Power off redistributor */ + gicr_write_pwrr(base, PWRR_OFF); + + /* + * If this is the last man, turning this redistributor frame off will + * result in the group itself being powered off and RDGPD = 1. + * In that case, wait as long as it's in transition, or has aborted + * the transition altogether for any reason. + */ + if ((gicr_read_pwrr(base) & PWRR_RDGPD) != 0U) { + /* Wait until group not transitioning */ + gicr_wait_group_not_in_transit(base); + } +} + +static uintptr_t get_gicr_base(unsigned int proc_num) +{ + uintptr_t gicr_base; + + assert(gicv3_driver_data != NULL); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + + gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num]; + assert(gicr_base != 0UL); + + return gicr_base; +} + +static bool gicv3_redists_need_power_mgmt(uintptr_t gicr_base) +{ + uint32_t reg = mmio_read_32(gicr_base + GICR_IIDR); + + /* + * The Arm GIC-600 and GIC-700 models have their redistributors + * powered down at reset. + */ + return (((reg & IIDR_MODEL_MASK) == IIDR_MODEL_ARM_GIC_600) || + ((reg & IIDR_MODEL_MASK) == IIDR_MODEL_ARM_GIC_600AE) || + ((reg & IIDR_MODEL_MASK) == IIDR_MODEL_ARM_GIC_700)); +} + +#endif /* GICV3_SUPPORT_GIC600 */ + +void gicv3_distif_pre_save(unsigned int proc_num) +{ + arm_gicv3_distif_pre_save(proc_num); +} + +void gicv3_distif_post_restore(unsigned int proc_num) +{ + arm_gicv3_distif_post_restore(proc_num); +} + +/* + * Power off GIC-600 redistributor (if configured and detected) + */ +void gicv3_rdistif_off(unsigned int proc_num) +{ +#if GICV3_SUPPORT_GIC600 + uintptr_t gicr_base = get_gicr_base(proc_num); + + /* Attempt to power redistributor off */ + if (gicv3_redists_need_power_mgmt(gicr_base)) { + gic600_pwr_off(gicr_base); + } +#endif +} + +/* + * Power on GIC-600 redistributor (if configured and detected) + */ +void gicv3_rdistif_on(unsigned int proc_num) +{ +#if GICV3_SUPPORT_GIC600 + uintptr_t gicr_base = get_gicr_base(proc_num); + + /* Power redistributor on */ + if (gicv3_redists_need_power_mgmt(gicr_base)) { + gic600_pwr_on(gicr_base); + } +#endif +} + +#if GIC600_ERRATA_WA_2384374 +/******************************************************************************* + * Apply part 2 of workaround for errata-2384374 as per SDEN: + * https://developer.arm.com/documentation/sden892601/latest/ + ******************************************************************************/ +void gicv3_apply_errata_wa_2384374(uintptr_t gicr_base) +{ + if (gic600_errata_wa_2384374) { + uint32_t gicr_ctlr_val = gicr_read_ctlr(gicr_base); + + gicr_write_ctlr(gicr_base, gicr_ctlr_val | + (GICR_CTLR_DPG0_BIT | GICR_CTLR_DPG1NS_BIT | + GICR_CTLR_DPG1S_BIT)); + gicr_write_ctlr(gicr_base, gicr_ctlr_val & + ~(GICR_CTLR_DPG0_BIT | GICR_CTLR_DPG1NS_BIT | + GICR_CTLR_DPG1S_BIT)); + } +} +#endif /* GIC600_ERRATA_WA_2384374 */ + +void gicv3_check_erratas_applies(uintptr_t gicd_base) +{ + unsigned int gic_prod_id; + uint8_t gic_rev; + + assert(gicd_base != 0UL); + + gicv3_get_component_prodid_rev(gicd_base, &gic_prod_id, &gic_rev); + + /* + * This workaround applicable only to GIC600 and GIC600AE products with + * revision less than r1p6 and r0p2 respectively. + * As per GIC600/GIC600AE specification - + * r1p6 = 0x17 => GICD_IIDR[19:12] + * r0p2 = 0x04 => GICD_IIDR[19:12] + */ + if ((gic_prod_id == GIC_PRODUCT_ID_GIC600) || + (gic_prod_id == GIC_PRODUCT_ID_GIC600AE)) { + if (((gic_prod_id == GIC_PRODUCT_ID_GIC600) && + (gic_rev <= GIC_REV(GIC_VARIANT_R1, GIC_REV_P6))) || + ((gic_prod_id == GIC_PRODUCT_ID_GIC600AE) && + (gic_rev <= GIC_REV(GIC_VARIANT_R0, GIC_REV_P2)))) { +#if GIC600_ERRATA_WA_2384374 + gic600_errata_wa_2384374 = true; + VERBOSE("%s applies\n", + "GIC600/GIC600AE errata workaround 2384374"); +#else + WARN("%s missing\n", + "GIC600/GIC600AE errata workaround 2384374"); +#endif /* GIC600_ERRATA_WA_2384374 */ + } else { + VERBOSE("%s not applies\n", + "GIC600/GIC600AE errata workaround 2384374"); + } + } +} diff --git a/drivers/arm/gic/v3/gic600_multichip.c b/drivers/arm/gic/v3/gic600_multichip.c new file mode 100644 index 0000000..a4786bb --- /dev/null +++ b/drivers/arm/gic/v3/gic600_multichip.c @@ -0,0 +1,391 @@ +/* + * Copyright (c) 2019-2023, Arm Limited. All rights reserved. + * Copyright (c) 2022-2023, NVIDIA Corporation. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/* + * GIC-600 driver extension for multichip setup + */ + +#include <assert.h> + +#include <common/debug.h> +#include <drivers/arm/arm_gicv3_common.h> +#include <drivers/arm/gic600_multichip.h> +#include <drivers/arm/gicv3.h> + +#include "../common/gic_common_private.h" +#include "gic600_multichip_private.h" + +static struct gic600_multichip_data *plat_gic_multichip_data; + +/******************************************************************************* + * Retrieve the address of the chip owner for a given SPI ID + ******************************************************************************/ +uintptr_t gic600_multichip_gicd_base_for_spi(uint32_t spi_id) +{ + unsigned int i; + + /* Find the multichip instance */ + for (i = 0U; i < GIC600_MAX_MULTICHIP; i++) { + if ((spi_id <= plat_gic_multichip_data->spi_ids[i].spi_id_max) && + (spi_id >= plat_gic_multichip_data->spi_ids[i].spi_id_min)) { + break; + } + } + + /* Ensure that plat_gic_multichip_data contains valid values */ + assert(i < GIC600_MAX_MULTICHIP); + + return plat_gic_multichip_data->spi_ids[i].gicd_base; +} + +/******************************************************************************* + * GIC-600 multichip operation related helper functions + ******************************************************************************/ +static void gicd_dchipr_wait_for_power_update_progress(uintptr_t base) +{ + unsigned int retry = GICD_PUP_UPDATE_RETRIES; + + while ((read_gicd_dchipr(base) & GICD_DCHIPR_PUP_BIT) != 0U) { + if (retry-- == 0U) { + ERROR("GIC-600 connection to Routing Table Owner timed " + "out\n"); + panic(); + } + } +} + +/******************************************************************************* + * Sets up the routing table owner. + ******************************************************************************/ +static void set_gicd_dchipr_rt_owner(uintptr_t base, unsigned int rt_owner) +{ + /* + * Ensure that Group enables in GICD_CTLR are disabled and no pending + * register writes to GICD_CTLR. + */ + if ((gicd_read_ctlr(base) & + (CTLR_ENABLE_G0_BIT | CTLR_ENABLE_G1S_BIT | + CTLR_ENABLE_G1NS_BIT | GICD_CTLR_RWP_BIT)) != 0) { + ERROR("GICD_CTLR group interrupts are either enabled or have " + "pending writes. Cannot set RT owner.\n"); + panic(); + } + + /* Poll till PUP is zero before intiating write */ + gicd_dchipr_wait_for_power_update_progress(base); + + write_gicd_dchipr(base, read_gicd_dchipr(base) | + (rt_owner << GICD_DCHIPR_RT_OWNER_SHIFT)); + + /* Poll till PUP is zero to ensure write is complete */ + gicd_dchipr_wait_for_power_update_progress(base); +} + +/******************************************************************************* + * Configures the Chip Register to make connections to GICDs on + * a multichip platform. + ******************************************************************************/ +static void set_gicd_chipr_n(uintptr_t base, + unsigned int chip_id, + uint64_t chip_addr, + unsigned int spi_id_min, + unsigned int spi_id_max) +{ + unsigned int spi_block_min, spi_blocks; + unsigned int gicd_iidr_val = gicd_read_iidr(base); + uint64_t chipr_n_val; + + /* + * Ensure that group enables in GICD_CTLR are disabled and no pending + * register writes to GICD_CTLR. + */ + if ((gicd_read_ctlr(base) & + (CTLR_ENABLE_G0_BIT | CTLR_ENABLE_G1S_BIT | + CTLR_ENABLE_G1NS_BIT | GICD_CTLR_RWP_BIT)) != 0) { + ERROR("GICD_CTLR group interrupts are either enabled or have " + "pending writes. Cannot set CHIPR register.\n"); + panic(); + } + + /* + * spi_id_min and spi_id_max of value 0 is used to intidicate that the + * chip doesn't own any SPI block. Re-assign min and max values as SPI + * id starts from 32. + */ + if (spi_id_min == 0 && spi_id_max == 0) { + spi_id_min = GIC600_SPI_ID_MIN; + spi_id_max = GIC600_SPI_ID_MIN; + } + + switch ((gicd_iidr_val & IIDR_MODEL_MASK)) { + case IIDR_MODEL_ARM_GIC_600: + spi_block_min = SPI_BLOCK_MIN_VALUE(spi_id_min); + spi_blocks = SPI_BLOCKS_VALUE(spi_id_min, spi_id_max); + + chipr_n_val = GICD_CHIPR_VALUE_GIC_600(chip_addr, + spi_block_min, + spi_blocks); + break; + case IIDR_MODEL_ARM_GIC_700: + /* Calculate the SPI_ID_MIN value for ESPI */ + if (spi_id_min >= GIC700_ESPI_ID_MIN) { + spi_block_min = ESPI_BLOCK_MIN_VALUE(spi_id_min); + spi_block_min += SPI_BLOCKS_VALUE(GIC700_SPI_ID_MIN, + GIC700_SPI_ID_MAX); + } else { + spi_block_min = SPI_BLOCK_MIN_VALUE(spi_id_min); + } + + /* Calculate the total number of blocks */ + spi_blocks = SPI_BLOCKS_VALUE(spi_id_min, spi_id_max); + + chipr_n_val = GICD_CHIPR_VALUE_GIC_700(chip_addr, + spi_block_min, + spi_blocks); + break; + default: + ERROR("Unsupported GIC model 0x%x for multichip setup.\n", + gicd_iidr_val); + panic(); + break; + } + chipr_n_val |= GICD_CHIPRx_SOCKET_STATE; + + /* + * Wait for DCHIPR.PUP to be zero before commencing writes to + * GICD_CHIPRx. + */ + gicd_dchipr_wait_for_power_update_progress(base); + + /* + * Assign chip addr, spi min block, number of spi blocks and bring chip + * online by setting SocketState. + */ + write_gicd_chipr_n(base, chip_id, chipr_n_val); + + /* + * Poll until DCHIP.PUP is zero to verify connection to rt_owner chip + * is complete. + */ + gicd_dchipr_wait_for_power_update_progress(base); + + /* + * Ensure that write to GICD_CHIPRx is successful and the chip_n came + * online. + */ + if (read_gicd_chipr_n(base, chip_id) != chipr_n_val) { + ERROR("GICD_CHIPR%u write failed\n", chip_id); + panic(); + } + + /* Ensure that chip is in consistent state */ + if (((read_gicd_chipsr(base) & GICD_CHIPSR_RTS_MASK) >> + GICD_CHIPSR_RTS_SHIFT) != + GICD_CHIPSR_RTS_STATE_CONSISTENT) { + ERROR("Chip %u routing table is not in consistent state\n", + chip_id); + panic(); + } +} + +/******************************************************************************* + * Validates the GIC-600 Multichip data structure passed by the platform. + ******************************************************************************/ +static void gic600_multichip_validate_data( + struct gic600_multichip_data *multichip_data) +{ + unsigned int i, spi_id_min, spi_id_max, blocks_of_32; + unsigned int multichip_spi_blocks = 0; + + assert(multichip_data != NULL); + + if (multichip_data->chip_count > GIC600_MAX_MULTICHIP) { + ERROR("GIC-600 Multichip count should not exceed %d\n", + GIC600_MAX_MULTICHIP); + panic(); + } + + for (i = 0U; i < multichip_data->chip_count; i++) { + spi_id_min = multichip_data->spi_ids[i].spi_id_min; + spi_id_max = multichip_data->spi_ids[i].spi_id_max; + + if ((spi_id_min != 0U) || (spi_id_max != 0U)) { + + /* SPI IDs range check */ + if (!(spi_id_min >= GIC600_SPI_ID_MIN) || + !(spi_id_max <= GIC600_SPI_ID_MAX) || + !(spi_id_min <= spi_id_max) || + !((spi_id_max - spi_id_min + 1) % 32 == 0)) { + ERROR("Invalid SPI IDs {%u, %u} passed for " + "Chip %u\n", spi_id_min, + spi_id_max, i); + panic(); + } + + /* SPI IDs overlap check */ + blocks_of_32 = BLOCKS_OF_32(spi_id_min, spi_id_max); + if ((multichip_spi_blocks & blocks_of_32) != 0) { + ERROR("SPI IDs of Chip %u overlapping\n", i); + panic(); + } + multichip_spi_blocks |= blocks_of_32; + } + } +} + +/******************************************************************************* + * Validates the GIC-700 Multichip data structure passed by the platform. + ******************************************************************************/ +static void gic700_multichip_validate_data( + struct gic600_multichip_data *multichip_data) +{ + unsigned int i, spi_id_min, spi_id_max, blocks_of_32; + unsigned int multichip_spi_blocks = 0U, multichip_espi_blocks = 0U; + + assert(multichip_data != NULL); + + if (multichip_data->chip_count > GIC600_MAX_MULTICHIP) { + ERROR("GIC-700 Multichip count (%u) should not exceed %u\n", + multichip_data->chip_count, GIC600_MAX_MULTICHIP); + panic(); + } + + for (i = 0U; i < multichip_data->chip_count; i++) { + spi_id_min = multichip_data->spi_ids[i].spi_id_min; + spi_id_max = multichip_data->spi_ids[i].spi_id_max; + + if ((spi_id_min == 0U) || (spi_id_max == 0U)) { + continue; + } + + /* MIN SPI ID check */ + if ((spi_id_min < GIC700_SPI_ID_MIN) || + ((spi_id_min >= GIC700_SPI_ID_MAX) && + (spi_id_min < GIC700_ESPI_ID_MIN))) { + ERROR("Invalid MIN SPI ID {%u} passed for " + "Chip %u\n", spi_id_min, i); + panic(); + } + + if ((spi_id_min > spi_id_max) || + ((spi_id_max - spi_id_min + 1) % 32 != 0)) { + ERROR("Unaligned SPI IDs {%u, %u} passed for " + "Chip %u\n", spi_id_min, + spi_id_max, i); + panic(); + } + + /* ESPI IDs range check */ + if ((spi_id_min >= GIC700_ESPI_ID_MIN) && + (spi_id_max > GIC700_ESPI_ID_MAX)) { + ERROR("Invalid ESPI IDs {%u, %u} passed for " + "Chip %u\n", spi_id_min, + spi_id_max, i); + panic(); + + } + + /* SPI IDs range check */ + if (((spi_id_min < GIC700_SPI_ID_MAX) && + (spi_id_max > GIC700_SPI_ID_MAX))) { + ERROR("Invalid SPI IDs {%u, %u} passed for " + "Chip %u\n", spi_id_min, + spi_id_max, i); + panic(); + } + + /* SPI IDs overlap check */ + if (spi_id_max < GIC700_SPI_ID_MAX) { + blocks_of_32 = BLOCKS_OF_32(spi_id_min, spi_id_max); + if ((multichip_spi_blocks & blocks_of_32) != 0) { + ERROR("SPI IDs of Chip %u overlapping\n", i); + panic(); + } + multichip_spi_blocks |= blocks_of_32; + } + + /* ESPI IDs overlap check */ + if (spi_id_max > GIC700_ESPI_ID_MIN) { + blocks_of_32 = BLOCKS_OF_32(spi_id_min - GIC700_ESPI_ID_MIN, + spi_id_max - GIC700_ESPI_ID_MIN); + if ((multichip_espi_blocks & blocks_of_32) != 0) { + ERROR("SPI IDs of Chip %u overlapping\n", i); + panic(); + } + multichip_espi_blocks |= blocks_of_32; + } + } +} + +/******************************************************************************* + * Initialize GIC-600 and GIC-700 Multichip operation. + ******************************************************************************/ +void gic600_multichip_init(struct gic600_multichip_data *multichip_data) +{ + unsigned int i; + uint32_t gicd_iidr_val = gicd_read_iidr(multichip_data->rt_owner_base); + + if ((gicd_iidr_val & IIDR_MODEL_MASK) == IIDR_MODEL_ARM_GIC_600) { + gic600_multichip_validate_data(multichip_data); + } + + if ((gicd_iidr_val & IIDR_MODEL_MASK) == IIDR_MODEL_ARM_GIC_700) { + gic700_multichip_validate_data(multichip_data); + } + + /* + * Ensure that G0/G1S/G1NS interrupts are disabled. This also ensures + * that GIC-600 Multichip configuration is done first. + */ + if ((gicd_read_ctlr(multichip_data->rt_owner_base) & + (CTLR_ENABLE_G0_BIT | CTLR_ENABLE_G1S_BIT | + CTLR_ENABLE_G1NS_BIT | GICD_CTLR_RWP_BIT)) != 0) { + ERROR("GICD_CTLR group interrupts are either enabled or have " + "pending writes.\n"); + panic(); + } + + /* Ensure that the routing table owner is in disconnected state */ + if (((read_gicd_chipsr(multichip_data->rt_owner_base) & + GICD_CHIPSR_RTS_MASK) >> GICD_CHIPSR_RTS_SHIFT) != + GICD_CHIPSR_RTS_STATE_DISCONNECTED) { + ERROR("GIC-600 routing table owner is not in disconnected " + "state to begin multichip configuration\n"); + panic(); + } + + /* Initialize the GICD which is marked as routing table owner first */ + set_gicd_dchipr_rt_owner(multichip_data->rt_owner_base, + multichip_data->rt_owner); + + set_gicd_chipr_n(multichip_data->rt_owner_base, multichip_data->rt_owner, + multichip_data->chip_addrs[multichip_data->rt_owner], + multichip_data-> + spi_ids[multichip_data->rt_owner].spi_id_min, + multichip_data-> + spi_ids[multichip_data->rt_owner].spi_id_max); + + for (i = 0; i < multichip_data->chip_count; i++) { + if (i == multichip_data->rt_owner) + continue; + + set_gicd_chipr_n(multichip_data->rt_owner_base, i, + multichip_data->chip_addrs[i], + multichip_data->spi_ids[i].spi_id_min, + multichip_data->spi_ids[i].spi_id_max); + } + + plat_gic_multichip_data = multichip_data; +} + +/******************************************************************************* + * Allow a way to query the status of the GIC600 multichip driver + ******************************************************************************/ +bool gic600_multichip_is_initialized(void) +{ + return (plat_gic_multichip_data != NULL); +} diff --git a/drivers/arm/gic/v3/gic600_multichip_private.h b/drivers/arm/gic/v3/gic600_multichip_private.h new file mode 100644 index 0000000..fd1cb57 --- /dev/null +++ b/drivers/arm/gic/v3/gic600_multichip_private.h @@ -0,0 +1,111 @@ +/* + * Copyright (c) 2019-2023, ARM Limited. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef GIC600_MULTICHIP_PRIVATE_H +#define GIC600_MULTICHIP_PRIVATE_H + +#include <drivers/arm/gic600_multichip.h> + +#include "gicv3_private.h" + +/* GIC600 GICD multichip related offsets */ +#define GICD_CHIPSR U(0xC000) +#define GICD_DCHIPR U(0xC004) +#define GICD_CHIPR U(0xC008) + +/* GIC600 GICD multichip related masks */ +#define GICD_CHIPRx_PUP_BIT BIT_64(1) +#define GICD_CHIPRx_SOCKET_STATE BIT_64(0) +#define GICD_DCHIPR_PUP_BIT BIT_32(0) +#define GICD_CHIPSR_RTS_MASK (BIT_32(4) | BIT_32(5)) + +/* GIC600 GICD multichip related shifts */ +#define GICD_CHIPRx_ADDR_SHIFT 16 +#define GICD_CHIPSR_RTS_SHIFT 4 +#define GICD_DCHIPR_RT_OWNER_SHIFT 4 + +/* Other shifts and masks remain the same between GIC-600 and GIC-700. */ +#define GIC_700_SPI_BLOCK_MIN_SHIFT 9 +#define GIC_700_SPI_BLOCKS_SHIFT 3 +#define GIC_600_SPI_BLOCK_MIN_SHIFT 10 +#define GIC_600_SPI_BLOCKS_SHIFT 5 + +#define GICD_CHIPSR_RTS_STATE_DISCONNECTED U(0) +#define GICD_CHIPSR_RTS_STATE_UPDATING U(1) +#define GICD_CHIPSR_RTS_STATE_CONSISTENT U(2) + +/* SPI interrupt id minimum and maximum range */ +#define GIC600_SPI_ID_MIN 32 +#define GIC600_SPI_ID_MAX 991 + +#define GIC700_SPI_ID_MIN 32 +#define GIC700_SPI_ID_MAX 991 +#define GIC700_ESPI_ID_MIN 4096 +#define GIC700_ESPI_ID_MAX 5119 + +/* Number of retries for PUP update */ +#define GICD_PUP_UPDATE_RETRIES 10000 + +#define SPI_BLOCK_MIN_VALUE(spi_id_min) \ + (((spi_id_min) - GIC600_SPI_ID_MIN) / \ + GIC600_SPI_ID_MIN) +#define SPI_BLOCKS_VALUE(spi_id_min, spi_id_max) \ + (((spi_id_max) - (spi_id_min) + 1) / \ + GIC600_SPI_ID_MIN) +#define ESPI_BLOCK_MIN_VALUE(spi_id_min) \ + (((spi_id_min) - GIC700_ESPI_ID_MIN + 1) / \ + GIC700_SPI_ID_MIN) +#define GICD_CHIPR_VALUE_GIC_700(chip_addr, spi_block_min, spi_blocks) \ + (((chip_addr) << GICD_CHIPRx_ADDR_SHIFT) | \ + ((spi_block_min) << GIC_700_SPI_BLOCK_MIN_SHIFT) | \ + ((spi_blocks) << GIC_700_SPI_BLOCKS_SHIFT)) +#define GICD_CHIPR_VALUE_GIC_600(chip_addr, spi_block_min, spi_blocks) \ + (((chip_addr) << GICD_CHIPRx_ADDR_SHIFT) | \ + ((spi_block_min) << GIC_600_SPI_BLOCK_MIN_SHIFT) | \ + ((spi_blocks) << GIC_600_SPI_BLOCKS_SHIFT)) + +/* + * Multichip data assertion macros + */ +/* Set bits from 0 to ((spi_id_max + 1) / 32) */ +#define SPI_BLOCKS_TILL_MAX(spi_id_max) \ + ((1ULL << (((spi_id_max) + 1) >> 5)) - 1) +/* Set bits from 0 to (spi_id_min / 32) */ +#define SPI_BLOCKS_TILL_MIN(spi_id_min) ((1 << ((spi_id_min) >> 5)) - 1) +/* Set bits from (spi_id_min / 32) to ((spi_id_max + 1) / 32) */ +#define BLOCKS_OF_32(spi_id_min, spi_id_max) \ + SPI_BLOCKS_TILL_MAX(spi_id_max) ^ \ + SPI_BLOCKS_TILL_MIN(spi_id_min) + +/******************************************************************************* + * GIC-600 multichip operation related helper functions + ******************************************************************************/ +static inline uint32_t read_gicd_dchipr(uintptr_t base) +{ + return mmio_read_32(base + GICD_DCHIPR); +} + +static inline uint64_t read_gicd_chipr_n(uintptr_t base, uint8_t n) +{ + return mmio_read_64(base + (GICD_CHIPR + (8U * n))); +} + +static inline uint32_t read_gicd_chipsr(uintptr_t base) +{ + return mmio_read_32(base + GICD_CHIPSR); +} + +static inline void write_gicd_dchipr(uintptr_t base, uint32_t val) +{ + mmio_write_32(base + GICD_DCHIPR, val); +} + +static inline void write_gicd_chipr_n(uintptr_t base, uint8_t n, uint64_t val) +{ + mmio_write_64(base + (GICD_CHIPR + (8U * n)), val); +} + +#endif /* GIC600_MULTICHIP_PRIVATE_H */ diff --git a/drivers/arm/gic/v3/gic600ae_fmu.c b/drivers/arm/gic/v3/gic600ae_fmu.c new file mode 100644 index 0000000..0262f48 --- /dev/null +++ b/drivers/arm/gic/v3/gic600ae_fmu.c @@ -0,0 +1,384 @@ +/* + * Copyright (c) 2021-2022, NVIDIA Corporation. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +/* + * Driver for GIC-600AE Fault Management Unit + */ + +#include <assert.h> +#include <inttypes.h> + +#include <arch_helpers.h> +#include <common/debug.h> +#include <drivers/arm/gic600ae_fmu.h> +#include <drivers/arm/gicv3.h> + +/* GIC-600 AE FMU specific register offsets */ + +/* GIC-600 AE FMU specific macros */ +#define FMU_ERRIDR_NUM U(44) +#define FMU_ERRIDR_NUM_MASK U(0xFFFF) + +/* Safety mechanisms for GICD block */ +static char *gicd_sm_info[] = { + "Reserved", + "GICD dual lockstep error", + "GICD AXI4 slave interface error", + "GICD-PPI AXI4-Stream interface error", + "GICD-ITS AXI4-Stream interface error", + "GICD-SPI-Collator AXI4-Stream interface error", + "GICD AXI4 master interface error", + "SPI RAM DED error", + "SGI RAM DED error", + "Reserved", + "LPI RAM DED error", + "GICD-remote-GICD AXI4-Stream interface error", + "GICD Q-Channel interface error", + "GICD P-Channel interface error", + "SPI RAM address decode error", + "SGI RAM address decode error", + "Reserved", + "LPI RAM address decode error", + "FMU dual lockstep error", + "FMU ping ACK error", + "FMU APB parity error", + "GICD-Wake AXI4-Stream interface error", + "GICD PageOffset or Chip ID error", + "MBIST REQ error", + "SPI RAM SEC error", + "SGI RAM SEC error", + "Reserved", + "LPI RAM SEC error", + "User custom SM0 error", + "User custom SM1 error", + "GICD-ITS Monolithic switch error", + "GICD-ITS Q-Channel interface error", + "GICD-ITS Monolithic interface error", + "GICD FMU ClkGate override" +}; + +/* Safety mechanisms for PPI block */ +static char *ppi_sm_info[] = { + "Reserved", + "PPI dual lockstep error", + "PPI-GICD AXI4-Stream interface error", + "PPI-CPU-IF AXI4-Stream interface error", + "PPI Q-Channel interface error", + "PPI RAM DED error", + "PPI RAM address decode error", + "PPI RAM SEC error", + "PPI User0 SM", + "PPI User1 SM", + "MBIST REQ error", + "PPI interrupt parity protection error", + "PPI FMU ClkGate override" +}; + +/* Safety mechanisms for ITS block */ +static char *its_sm_info[] = { + "Reserved", + "ITS dual lockstep error", + "ITS-GICD AXI4-Stream interface error", + "ITS AXI4 slave interface error", + "ITS AXI4 master interface error", + "ITS Q-Channel interface error", + "ITS RAM DED error", + "ITS RAM address decode error", + "Bypass ACE switch error", + "ITS RAM SEC error", + "ITS User0 SM", + "ITS User1 SM", + "ITS-GICD Monolithic interface error", + "MBIST REQ error", + "ITS FMU ClkGate override" +}; + +/* Safety mechanisms for SPI Collator block */ +static char *spicol_sm_info[] = { + "Reserved", + "SPI Collator dual lockstep error", + "SPI-Collator-GICD AXI4-Stream interface error", + "SPI Collator Q-Channel interface error", + "SPI Collator Q-Channel clock error", + "SPI interrupt parity error" +}; + +/* Safety mechanisms for Wake Request block */ +static char *wkrqst_sm_info[] = { + "Reserved", + "Wake dual lockstep error", + "Wake-GICD AXI4-Stream interface error" +}; + +/* Helper function to find detailed information for a specific IERR */ +static char __unused *ras_ierr_to_str(unsigned int blkid, unsigned int ierr) +{ + char *str = NULL; + + /* Find the correct record */ + switch (blkid) { + case FMU_BLK_GICD: + assert(ierr < ARRAY_SIZE(gicd_sm_info)); + str = gicd_sm_info[ierr]; + break; + + case FMU_BLK_SPICOL: + assert(ierr < ARRAY_SIZE(spicol_sm_info)); + str = spicol_sm_info[ierr]; + break; + + case FMU_BLK_WAKERQ: + assert(ierr < ARRAY_SIZE(wkrqst_sm_info)); + str = wkrqst_sm_info[ierr]; + break; + + case FMU_BLK_ITS0...FMU_BLK_ITS7: + assert(ierr < ARRAY_SIZE(its_sm_info)); + str = its_sm_info[ierr]; + break; + + case FMU_BLK_PPI0...FMU_BLK_PPI31: + assert(ierr < ARRAY_SIZE(ppi_sm_info)); + str = ppi_sm_info[ierr]; + break; + + default: + assert(false); + break; + } + + return str; +} + +/* + * Probe for error in memory-mapped registers containing error records. + * Upon detecting an error, set probe data to the index of the record + * in error, and return 1; otherwise, return 0. + */ +int gic600_fmu_probe(uint64_t base, int *probe_data) +{ + uint64_t gsr; + + assert(base != 0UL); + + /* + * Read ERR_GSR to find the error record 'M' + */ + gsr = gic_fmu_read_errgsr(base); + if (gsr == U(0)) { + return 0; + } + + /* Return the index of the record in error */ + if (probe_data != NULL) { + *probe_data = (int)__builtin_ctzll(gsr); + } + + return 1; +} + +/* + * The handler function to read RAS records and find the safety + * mechanism with the error. + */ +int gic600_fmu_ras_handler(uint64_t base, int probe_data) +{ + uint64_t errstatus; + unsigned int blkid = (unsigned int)probe_data, ierr, serr; + + assert(base != 0UL); + + /* + * FMU_ERRGSR indicates the ID of the GIC + * block that faulted. + */ + assert(blkid <= FMU_BLK_PPI31); + + /* + * Find more information by reading FMU_ERR<M>STATUS + * register + */ + errstatus = gic_fmu_read_errstatus(base, blkid); + + /* + * If FMU_ERR<M>STATUS.V is set to 0, no RAS records + * need to be scanned. + */ + if ((errstatus & FMU_ERRSTATUS_V_BIT) == U(0)) { + return 0; + } + + /* + * FMU_ERR<M>STATUS.IERR indicates which Safety Mechanism + * reported the error. + */ + ierr = (errstatus >> FMU_ERRSTATUS_IERR_SHIFT) & + FMU_ERRSTATUS_IERR_MASK; + + /* + * FMU_ERR<M>STATUS.SERR indicates architecturally + * defined primary error code. + */ + serr = errstatus & FMU_ERRSTATUS_SERR_MASK; + + ERROR("**************************************\n"); + ERROR("RAS %s Error detected by GIC600 AE FMU\n", + ((errstatus & FMU_ERRSTATUS_UE_BIT) != 0U) ? + "Uncorrectable" : "Corrected"); + ERROR("\tStatus = 0x%lx \n", errstatus); + ERROR("\tBlock ID = 0x%x\n", blkid); + ERROR("\tSafety Mechanism ID = 0x%x (%s)\n", ierr, + ras_ierr_to_str(blkid, ierr)); + ERROR("\tArchitecturally defined primary error code = 0x%x\n", + serr); + ERROR("**************************************\n"); + + /* Clear FMU_ERR<M>STATUS */ + gic_fmu_write_errstatus(base, probe_data, errstatus); + + return 0; +} + +/* + * Initialization sequence for the FMU + * + * 1. enable error detection for error records that are passed in the blk_present_mask + * 2. enable MBIST REQ and FMU Clk Gate override safety mechanisms for error records + * that are present on the platform + * + * The platforms are expected to pass `errctlr_ce_en` and `errctlr_ue_en`. + */ +void gic600_fmu_init(uint64_t base, uint64_t blk_present_mask, + bool errctlr_ce_en, bool errctlr_ue_en) +{ + unsigned int num_blk = gic_fmu_read_erridr(base) & FMU_ERRIDR_NUM_MASK; + uint64_t errctlr; + uint32_t smen; + + INFO("GIC600-AE FMU supports %d error records\n", num_blk); + + assert(num_blk == FMU_ERRIDR_NUM); + + /* sanitize block present mask */ + blk_present_mask &= FMU_BLK_PRESENT_MASK; + + /* Enable error detection for all error records */ + for (unsigned int i = 0U; i < num_blk; i++) { + + /* + * Disable all safety mechanisms for blocks that are not + * present and skip the next steps. + */ + if ((blk_present_mask & BIT(i)) == 0U) { + gic_fmu_disable_all_sm_blkid(base, i); + continue; + } + + /* Read the error record control register */ + errctlr = gic_fmu_read_errctlr(base, i); + + /* Enable error reporting and logging, if it is disabled */ + if ((errctlr & FMU_ERRCTLR_ED_BIT) == 0U) { + errctlr |= FMU_ERRCTLR_ED_BIT; + } + + /* Enable client provided ERRCTLR settings */ + errctlr |= (errctlr_ce_en ? (FMU_ERRCTLR_CI_BIT | FMU_ERRCTLR_CE_EN_BIT) : 0); + errctlr |= (errctlr_ue_en ? FMU_ERRCTLR_UI_BIT : 0U); + + gic_fmu_write_errctlr(base, i, errctlr); + } + + /* + * Enable MBIST REQ error and FMU CLK gate override safety mechanisms for + * all blocks + * + * GICD, SMID 23 and SMID 33 + * PPI, SMID 10 and SMID 12 + * ITS, SMID 13 and SMID 14 + */ + if ((blk_present_mask & BIT(FMU_BLK_GICD)) != 0U) { + smen = (GICD_MBIST_REQ_ERROR << FMU_SMEN_SMID_SHIFT) | + (FMU_BLK_GICD << FMU_SMEN_BLK_SHIFT) | + FMU_SMEN_EN_BIT; + gic_fmu_write_smen(base, smen); + + smen = (GICD_FMU_CLKGATE_ERROR << FMU_SMEN_SMID_SHIFT) | + (FMU_BLK_GICD << FMU_SMEN_BLK_SHIFT) | + FMU_SMEN_EN_BIT; + gic_fmu_write_smen(base, smen); + } + + for (unsigned int i = FMU_BLK_PPI0; i < FMU_BLK_PPI31; i++) { + if ((blk_present_mask & BIT(i)) != 0U) { + smen = (PPI_MBIST_REQ_ERROR << FMU_SMEN_SMID_SHIFT) | + (i << FMU_SMEN_BLK_SHIFT) | + FMU_SMEN_EN_BIT; + gic_fmu_write_smen(base, smen); + + smen = (PPI_FMU_CLKGATE_ERROR << FMU_SMEN_SMID_SHIFT) | + (i << FMU_SMEN_BLK_SHIFT) | + FMU_SMEN_EN_BIT; + gic_fmu_write_smen(base, smen); + } + } + + for (unsigned int i = FMU_BLK_ITS0; i < FMU_BLK_ITS7; i++) { + if ((blk_present_mask & BIT(i)) != 0U) { + smen = (ITS_MBIST_REQ_ERROR << FMU_SMEN_SMID_SHIFT) | + (i << FMU_SMEN_BLK_SHIFT) | + FMU_SMEN_EN_BIT; + gic_fmu_write_smen(base, smen); + + smen = (ITS_FMU_CLKGATE_ERROR << FMU_SMEN_SMID_SHIFT) | + (i << FMU_SMEN_BLK_SHIFT) | + FMU_SMEN_EN_BIT; + gic_fmu_write_smen(base, smen); + } + } +} + +/* + * This function enable the GICD background ping engine. The GICD sends ping + * messages to each remote GIC block, and expects a PING_ACK back within the + * specified timeout. Pings need to be enabled after programming the timeout + * value. + */ +void gic600_fmu_enable_ping(uint64_t base, uint64_t blk_present_mask, + unsigned int timeout_val, unsigned int interval_diff) +{ + /* + * Populate the PING Mask to skip a specific block while generating + * background ping messages and enable the ping mechanism. + */ + gic_fmu_write_pingmask(base, ~blk_present_mask); + gic_fmu_write_pingctlr(base, (interval_diff << FMU_PINGCTLR_INTDIFF_SHIFT) | + (timeout_val << FMU_PINGCTLR_TIMEOUTVAL_SHIFT) | FMU_PINGCTLR_EN_BIT); +} + +/* Print the safety mechanism description for a given block */ +void gic600_fmu_print_sm_info(uint64_t base, unsigned int blk, unsigned int smid) +{ + if (blk == FMU_BLK_GICD && smid <= FMU_SMID_GICD_MAX) { + INFO("GICD, SMID %d: %s\n", smid, gicd_sm_info[smid]); + } + + if (blk == FMU_BLK_SPICOL && smid <= FMU_SMID_SPICOL_MAX) { + INFO("SPI Collator, SMID %d: %s\n", smid, spicol_sm_info[smid]); + } + + if (blk == FMU_BLK_WAKERQ && (smid <= FMU_SMID_WAKERQ_MAX)) { + INFO("Wake Request, SMID %d: %s\n", smid, wkrqst_sm_info[smid]); + } + + if (((blk >= FMU_BLK_ITS0) && (blk <= FMU_BLK_ITS7)) && (smid <= FMU_SMID_ITS_MAX)) { + INFO("ITS, SMID %d: %s\n", smid, its_sm_info[smid]); + } + + if (((blk >= FMU_BLK_PPI0) && (blk <= FMU_BLK_PPI31)) && (smid <= FMU_SMID_PPI_MAX)) { + INFO("PPI, SMID %d: %s\n", smid, ppi_sm_info[smid]); + } +} diff --git a/drivers/arm/gic/v3/gic600ae_fmu_helpers.c b/drivers/arm/gic/v3/gic600ae_fmu_helpers.c new file mode 100644 index 0000000..09806dc --- /dev/null +++ b/drivers/arm/gic/v3/gic600ae_fmu_helpers.c @@ -0,0 +1,304 @@ +/* + * Copyright (c) 2021-2022, NVIDIA Corporation. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> +#include <errno.h> + +#include <arch.h> +#include <arch_helpers.h> +#include <drivers/arm/gic600ae_fmu.h> +#include <drivers/delay_timer.h> +#include <lib/mmio.h> + +#define GICFMU_IDLE_TIMEOUT_US U(2000000) + +/* Macro to write 32-bit FMU registers */ +#define GIC_FMU_WRITE_32(base, reg, val) \ + do { \ + /* \ + * This register receives the unlock key that is required for \ + * writes to FMU registers to be successful. \ + */ \ + mmio_write_32(base + GICFMU_KEY, 0xBE); \ + /* Perform the actual write */ \ + mmio_write_32((base) + (reg), (val)); \ + } while (false) + +/* Macro to write 64-bit FMU registers */ +#define GIC_FMU_WRITE_64(base, reg, n, val) \ + do { \ + /* \ + * This register receives the unlock key that is required for \ + * writes to FMU registers to be successful. \ + */ \ + mmio_write_32(base + GICFMU_KEY, 0xBE); \ + /* \ + * APB bus is 32-bit wide; so split the 64-bit write into \ + * two 32-bit writes \ + */ \ + mmio_write_32((base) + reg##_LO + (n * 64), (val)); \ + mmio_write_32((base) + reg##_HI + (n * 64), (val)); \ + } while (false) + +/* Helper function to wait until FMU is ready to accept the next command */ +static void wait_until_fmu_is_idle(uintptr_t base) +{ + uint32_t timeout_count = GICFMU_IDLE_TIMEOUT_US; + uint64_t status; + + /* wait until status is 'busy' */ + do { + status = (gic_fmu_read_status(base) & BIT(0)); + + if (timeout_count-- == 0U) { + ERROR("GIC600 AE FMU is not responding\n"); + panic(); + } + + udelay(1U); + + } while (status == U(0)); +} + +#define GIC_FMU_WRITE_ON_IDLE_32(base, reg, val) \ + do { \ + /* Wait until FMU is ready */ \ + wait_until_fmu_is_idle(base); \ + /* Actual register write */ \ + GIC_FMU_WRITE_32(base, reg, val); \ + /* Wait until FMU is ready */ \ + wait_until_fmu_is_idle(base); \ + } while (false) + +#define GIC_FMU_WRITE_ON_IDLE_64(base, reg, n, val) \ + do { \ + /* Wait until FMU is ready */ \ + wait_until_fmu_is_idle(base); \ + /* Actual register write */ \ + GIC_FMU_WRITE_64(base, reg, n, val); \ + /* Wait until FMU is ready */ \ + wait_until_fmu_is_idle(base); \ + } while (false) + +/******************************************************************************* + * GIC FMU functions for accessing the Fault Management Unit registers + ******************************************************************************/ + +/* + * Accessors to read the Error Record Feature Register bits corresponding + * to an error record 'n' + */ +uint64_t gic_fmu_read_errfr(uintptr_t base, unsigned int n) +{ + /* + * APB bus is 32-bit wide; so split the 64-bit read into + * two 32-bit reads + */ + uint64_t reg_val = (uint64_t)mmio_read_32(base + GICFMU_ERRFR_LO + n * 64U); + + reg_val |= ((uint64_t)mmio_read_32(base + GICFMU_ERRFR_HI + n * 64U) << 32); + return reg_val; +} + +/* + * Accessors to read the Error Record Control Register bits corresponding + * to an error record 'n' + */ +uint64_t gic_fmu_read_errctlr(uintptr_t base, unsigned int n) +{ + /* + * APB bus is 32-bit wide; so split the 64-bit read into + * two 32-bit reads + */ + uint64_t reg_val = (uint64_t)mmio_read_32(base + GICFMU_ERRCTLR_LO + n * 64U); + + reg_val |= ((uint64_t)mmio_read_32(base + GICFMU_ERRCTLR_HI + n * 64U) << 32); + return reg_val; +} + +/* + * Accessors to read the Error Record Primary Status Register bits + * corresponding to an error record 'n' + */ +uint64_t gic_fmu_read_errstatus(uintptr_t base, unsigned int n) +{ + /* + * APB bus is 32-bit wide; so split the 64-bit read into + * two 32-bit reads + */ + uint64_t reg_val = (uint64_t)mmio_read_32(base + GICFMU_ERRSTATUS_LO + n * 64U); + + reg_val |= ((uint64_t)mmio_read_32(base + GICFMU_ERRSTATUS_HI + n * 64U) << 32); + return reg_val; +} + +/* + * Accessors to read the Error Group Status Register + */ +uint64_t gic_fmu_read_errgsr(uintptr_t base) +{ + /* + * APB bus is 32-bit wide; so split the 64-bit read into + * two 32-bit reads + */ + uint64_t reg_val = (uint64_t)mmio_read_32(base + GICFMU_ERRGSR_LO); + + reg_val |= ((uint64_t)mmio_read_32(base + GICFMU_ERRGSR_HI) << 32); + return reg_val; +} + +/* + * Accessors to read the Ping Control Register + */ +uint32_t gic_fmu_read_pingctlr(uintptr_t base) +{ + return mmio_read_32(base + GICFMU_PINGCTLR); +} + +/* + * Accessors to read the Ping Now Register + */ +uint32_t gic_fmu_read_pingnow(uintptr_t base) +{ + return mmio_read_32(base + GICFMU_PINGNOW); +} + +/* + * Accessors to read the Ping Mask Register + */ +uint64_t gic_fmu_read_pingmask(uintptr_t base) +{ + /* + * APB bus is 32-bit wide; so split the 64-bit read into + * two 32-bit reads + */ + uint64_t reg_val = (uint64_t)mmio_read_32(base + GICFMU_PINGMASK_LO); + + reg_val |= ((uint64_t)mmio_read_32(base + GICFMU_PINGMASK_HI) << 32); + return reg_val; +} + +/* + * Accessors to read the FMU Status Register + */ +uint32_t gic_fmu_read_status(uintptr_t base) +{ + return mmio_read_32(base + GICFMU_STATUS); +} + +/* + * Accessors to read the Error Record ID Register + */ +uint32_t gic_fmu_read_erridr(uintptr_t base) +{ + return mmio_read_32(base + GICFMU_ERRIDR); +} + +/* + * Accessors to write a 64 bit value to the Error Record Control Register + */ +void gic_fmu_write_errctlr(uintptr_t base, unsigned int n, uint64_t val) +{ + GIC_FMU_WRITE_64(base, GICFMU_ERRCTLR, n, val); +} + +/* + * Accessors to write a 64 bit value to the Error Record Primary Status + * Register + */ +void gic_fmu_write_errstatus(uintptr_t base, unsigned int n, uint64_t val) +{ + /* Wait until FMU is ready before writing */ + GIC_FMU_WRITE_ON_IDLE_64(base, GICFMU_ERRSTATUS, n, val); +} + +/* + * Accessors to write a 32 bit value to the Ping Control Register + */ +void gic_fmu_write_pingctlr(uintptr_t base, uint32_t val) +{ + GIC_FMU_WRITE_32(base, GICFMU_PINGCTLR, val); +} + +/* + * Accessors to write a 32 bit value to the Ping Now Register + */ +void gic_fmu_write_pingnow(uintptr_t base, uint32_t val) +{ + /* Wait until FMU is ready before writing */ + GIC_FMU_WRITE_ON_IDLE_32(base, GICFMU_PINGNOW, val); +} + +/* + * Accessors to write a 32 bit value to the Safety Mechanism Enable Register + */ +void gic_fmu_write_smen(uintptr_t base, uint32_t val) +{ + /* Wait until FMU is ready before writing */ + GIC_FMU_WRITE_ON_IDLE_32(base, GICFMU_SMEN, val); +} + +/* + * Accessors to write a 32 bit value to the Safety Mechanism Inject Error + * Register + */ +void gic_fmu_write_sminjerr(uintptr_t base, uint32_t val) +{ + /* Wait until FMU is ready before writing */ + GIC_FMU_WRITE_ON_IDLE_32(base, GICFMU_SMINJERR, val); +} + +/* + * Accessors to write a 64 bit value to the Ping Mask Register + */ +void gic_fmu_write_pingmask(uintptr_t base, uint64_t val) +{ + GIC_FMU_WRITE_64(base, GICFMU_PINGMASK, 0, val); +} + +/* + * Helper function to disable all safety mechanisms for a given block + */ +void gic_fmu_disable_all_sm_blkid(uintptr_t base, unsigned int blkid) +{ + uint32_t smen, max_smid = U(0); + + /* Sanity check block ID */ + assert((blkid >= FMU_BLK_GICD) && (blkid <= FMU_BLK_PPI31)); + + /* Find the max safety mechanism ID for the block */ + switch (blkid) { + case FMU_BLK_GICD: + max_smid = FMU_SMID_GICD_MAX; + break; + + case FMU_BLK_SPICOL: + max_smid = FMU_SMID_SPICOL_MAX; + break; + + case FMU_BLK_WAKERQ: + max_smid = FMU_SMID_WAKERQ_MAX; + break; + + case FMU_BLK_ITS0...FMU_BLK_ITS7: + max_smid = FMU_SMID_ITS_MAX; + break; + + case FMU_BLK_PPI0...FMU_BLK_PPI31: + max_smid = FMU_SMID_PPI_MAX; + break; + + default: + assert(false); + break; + } + + /* Disable all Safety Mechanisms for a given block id */ + for (unsigned int i = 0U; i < max_smid; i++) { + smen = (blkid << FMU_SMEN_BLK_SHIFT) | (i << FMU_SMEN_SMID_SHIFT); + gic_fmu_write_smen(base, smen); + } +} diff --git a/drivers/arm/gic/v3/gicdv3_helpers.c b/drivers/arm/gic/v3/gicdv3_helpers.c new file mode 100644 index 0000000..987be69 --- /dev/null +++ b/drivers/arm/gic/v3/gicdv3_helpers.c @@ -0,0 +1,244 @@ +/* + * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <stdint.h> + +#include "gicv3_private.h" + +/******************************************************************************* + * GIC Distributor functions for accessing the GIC registers + * corresponding to a single interrupt ID. These functions use bitwise + * operations or appropriate register accesses to modify or return + * the bit-field corresponding the single interrupt ID. + ******************************************************************************/ + +/* + * Accessors to set the bits corresponding to interrupt ID + * in GIC Distributor ICFGR and ICFGRE. + */ +void gicd_set_icfgr(uintptr_t base, unsigned int id, unsigned int cfg) +{ + /* Interrupt configuration is a 2-bit field */ + unsigned int bit_shift = BIT_NUM(ICFG, id) << 1U; + + /* Clear the field, and insert required configuration */ + mmio_clrsetbits_32(base + GICD_OFFSET(ICFG, id), + (uint32_t)GIC_CFG_MASK << bit_shift, + (cfg & GIC_CFG_MASK) << bit_shift); +} + +/* + * Accessors to get/set/clear the bit corresponding to interrupt ID + * in GIC Distributor IGROUPR and IGROUPRE. + */ +unsigned int gicd_get_igroupr(uintptr_t base, unsigned int id) +{ + return GICD_GET_BIT(IGROUP, base, id); +} + +void gicd_set_igroupr(uintptr_t base, unsigned int id) +{ + GICD_SET_BIT(IGROUP, base, id); +} + +void gicd_clr_igroupr(uintptr_t base, unsigned int id) +{ + GICD_CLR_BIT(IGROUP, base, id); +} + +/* + * Accessors to get/set/clear the bit corresponding to interrupt ID + * in GIC Distributor IGRPMODR and IGRPMODRE. + */ +unsigned int gicd_get_igrpmodr(uintptr_t base, unsigned int id) +{ + return GICD_GET_BIT(IGRPMOD, base, id); +} + +void gicd_set_igrpmodr(uintptr_t base, unsigned int id) +{ + GICD_SET_BIT(IGRPMOD, base, id); +} + +void gicd_clr_igrpmodr(uintptr_t base, unsigned int id) +{ + GICD_CLR_BIT(IGRPMOD, base, id); +} + +/* + * Accessors to set the bit corresponding to interrupt ID + * in GIC Distributor ICENABLER and ICENABLERE. + */ +void gicd_set_icenabler(uintptr_t base, unsigned int id) +{ + GICD_WRITE_BIT(ICENABLE, base, id); +} + +/* + * Accessors to set the bit corresponding to interrupt ID + * in GIC Distributor ICPENDR and ICPENDRE. + */ +void gicd_set_icpendr(uintptr_t base, unsigned int id) +{ + GICD_WRITE_BIT(ICPEND, base, id); +} + +/* + * Accessors to get/set the bit corresponding to interrupt ID + * in GIC Distributor ISACTIVER and ISACTIVERE. + */ +unsigned int gicd_get_isactiver(uintptr_t base, unsigned int id) +{ + return GICD_GET_BIT(ISACTIVE, base, id); +} + +void gicd_set_isactiver(uintptr_t base, unsigned int id) +{ + GICD_WRITE_BIT(ISACTIVE, base, id); +} + +/* + * Accessors to set the bit corresponding to interrupt ID + * in GIC Distributor ISENABLER and ISENABLERE. + */ +void gicd_set_isenabler(uintptr_t base, unsigned int id) +{ + GICD_WRITE_BIT(ISENABLE, base, id); +} + +/* + * Accessors to set the bit corresponding to interrupt ID + * in GIC Distributor ISPENDR and ISPENDRE. + */ +void gicd_set_ispendr(uintptr_t base, unsigned int id) +{ + GICD_WRITE_BIT(ISPEND, base, id); +} + +/* + * Accessors to set the bit corresponding to interrupt ID + * in GIC Distributor IPRIORITYR and IPRIORITYRE. + */ +void gicd_set_ipriorityr(uintptr_t base, unsigned int id, unsigned int pri) +{ + GICD_WRITE_8(IPRIORITY, base, id, (uint8_t)(pri & GIC_PRI_MASK)); +} + +/******************************************************************************* + * GIC Distributor interface accessors for reading/writing entire registers + ******************************************************************************/ + +/* + * Accessors to read/write the GIC Distributor ICGFR and ICGFRE + * corresponding to the interrupt ID, 16 interrupt IDs at a time. + */ +unsigned int gicd_read_icfgr(uintptr_t base, unsigned int id) +{ + return GICD_READ(ICFG, base, id); +} + +void gicd_write_icfgr(uintptr_t base, unsigned int id, unsigned int val) +{ + GICD_WRITE(ICFG, base, id, val); +} + +/* + * Accessors to read/write the GIC Distributor IGROUPR and IGROUPRE + * corresponding to the interrupt ID, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_igroupr(uintptr_t base, unsigned int id) +{ + return GICD_READ(IGROUP, base, id); +} + +void gicd_write_igroupr(uintptr_t base, unsigned int id, unsigned int val) +{ + GICD_WRITE(IGROUP, base, id, val); +} + +/* + * Accessors to read/write the GIC Distributor IGRPMODR and IGRPMODRE + * corresponding to the interrupt ID, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_igrpmodr(uintptr_t base, unsigned int id) +{ + return GICD_READ(IGRPMOD, base, id); +} + +void gicd_write_igrpmodr(uintptr_t base, unsigned int id, unsigned int val) +{ + GICD_WRITE(IGRPMOD, base, id, val); +} + +/* + * Accessors to read/write the GIC Distributor IPRIORITYR and IPRIORITYRE + * corresponding to the interrupt ID, 4 interrupt IDs at a time. + */ +unsigned int gicd_read_ipriorityr(uintptr_t base, unsigned int id) +{ + return GICD_READ(IPRIORITY, base, id); +} + +void gicd_write_ipriorityr(uintptr_t base, unsigned int id, unsigned int val) +{ + GICD_WRITE(IPRIORITY, base, id, val); +} + +/* + * Accessors to read/write the GIC Distributor ISACTIVER and ISACTIVERE + * corresponding to the interrupt ID, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_isactiver(uintptr_t base, unsigned int id) +{ + return GICD_READ(ISACTIVE, base, id); +} + +void gicd_write_isactiver(uintptr_t base, unsigned int id, unsigned int val) +{ + GICD_WRITE(ISACTIVE, base, id, val); +} + +/* + * Accessors to read/write the GIC Distributor ISENABLER and ISENABLERE + * corresponding to the interrupt ID, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_isenabler(uintptr_t base, unsigned int id) +{ + return GICD_READ(ISENABLE, base, id); +} + +void gicd_write_isenabler(uintptr_t base, unsigned int id, unsigned int val) +{ + GICD_WRITE(ISENABLE, base, id, val); +} + +/* + * Accessors to read/write the GIC Distributor ISPENDR and ISPENDRE + * corresponding to the interrupt ID, 32 interrupt IDs at a time. + */ +unsigned int gicd_read_ispendr(uintptr_t base, unsigned int id) +{ + return GICD_READ(ISPEND, base, id); +} + +void gicd_write_ispendr(uintptr_t base, unsigned int id, unsigned int val) +{ + GICD_WRITE(ISPEND, base, id, val); +} + +/* + * Accessors to read/write the GIC Distributor NSACR and NSACRE + * corresponding to the interrupt ID, 16 interrupt IDs at a time. + */ +unsigned int gicd_read_nsacr(uintptr_t base, unsigned int id) +{ + return GICD_READ(NSAC, base, id); +} + +void gicd_write_nsacr(uintptr_t base, unsigned int id, unsigned int val) +{ + GICD_WRITE(NSAC, base, id, val); +} diff --git a/drivers/arm/gic/v3/gicrv3_helpers.c b/drivers/arm/gic/v3/gicrv3_helpers.c new file mode 100644 index 0000000..3004054 --- /dev/null +++ b/drivers/arm/gic/v3/gicrv3_helpers.c @@ -0,0 +1,139 @@ +/* + * Copyright (c) 2015-2020, Arm Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <arch.h> +#include <arch_helpers.h> +#include <common/debug.h> +#include <common/interrupt_props.h> +#include <drivers/arm/gicv3.h> +#include "gicv3_private.h" + +/******************************************************************************* + * GIC Redistributor functions + * Note: The raw register values correspond to multiple interrupt `id`s and + * the number of interrupt `id`s involved depends on the register accessed. + ******************************************************************************/ + +/* + * Accessors to read/write the GIC Redistributor IPRIORITYR and IPRIORITYRE + * register corresponding to the interrupt `id`, 4 interrupts IDs at a time. + */ +unsigned int gicr_read_ipriorityr(uintptr_t base, unsigned int id) +{ + return GICR_READ(IPRIORITY, base, id); +} + +void gicr_write_ipriorityr(uintptr_t base, unsigned int id, unsigned int val) +{ + GICR_WRITE(IPRIORITY, base, id, val); +} + +/* + * Accessor to set the byte corresponding to interrupt `id` + * in GIC Redistributor IPRIORITYR and IPRIORITYRE. + */ +void gicr_set_ipriorityr(uintptr_t base, unsigned int id, unsigned int pri) +{ + GICR_WRITE_8(IPRIORITY, base, id, (uint8_t)(pri & GIC_PRI_MASK)); +} + +/* + * Accessors to get/set/clear the bit corresponding to interrupt `id` + * from GIC Redistributor IGROUPR0 and IGROUPRE + */ +unsigned int gicr_get_igroupr(uintptr_t base, unsigned int id) +{ + return GICR_GET_BIT(IGROUP, base, id); +} + +void gicr_set_igroupr(uintptr_t base, unsigned int id) +{ + GICR_SET_BIT(IGROUP, base, id); +} + +void gicr_clr_igroupr(uintptr_t base, unsigned int id) +{ + GICR_CLR_BIT(IGROUP, base, id); +} + +/* + * Accessors to get/set/clear the bit corresponding to interrupt `id` + * from GIC Redistributor IGRPMODR0 and IGRPMODRE + */ +unsigned int gicr_get_igrpmodr(uintptr_t base, unsigned int id) +{ + return GICR_GET_BIT(IGRPMOD, base, id); +} + +void gicr_set_igrpmodr(uintptr_t base, unsigned int id) +{ + GICR_SET_BIT(IGRPMOD, base, id); +} + +void gicr_clr_igrpmodr(uintptr_t base, unsigned int id) +{ + GICR_CLR_BIT(IGRPMOD, base, id); +} + +/* + * Accessor to write the bit corresponding to interrupt `id` + * in GIC Redistributor ISENABLER0 and ISENABLERE + */ +void gicr_set_isenabler(uintptr_t base, unsigned int id) +{ + GICR_WRITE_BIT(ISENABLE, base, id); +} + +/* + * Accessor to write the bit corresponding to interrupt `id` + * in GIC Redistributor ICENABLER0 and ICENABLERE + */ +void gicr_set_icenabler(uintptr_t base, unsigned int id) +{ + GICR_WRITE_BIT(ICENABLE, base, id); +} + +/* + * Accessor to get the bit corresponding to interrupt `id` + * in GIC Redistributor ISACTIVER0 and ISACTIVERE + */ +unsigned int gicr_get_isactiver(uintptr_t base, unsigned int id) +{ + return GICR_GET_BIT(ISACTIVE, base, id); +} + +/* + * Accessor to clear the bit corresponding to interrupt `id` + * in GIC Redistributor ICPENDR0 and ICPENDRE + */ +void gicr_set_icpendr(uintptr_t base, unsigned int id) +{ + GICR_WRITE_BIT(ICPEND, base, id); +} + +/* + * Accessor to write the bit corresponding to interrupt `id` + * in GIC Redistributor ISPENDR0 and ISPENDRE + */ +void gicr_set_ispendr(uintptr_t base, unsigned int id) +{ + GICR_WRITE_BIT(ISPEND, base, id); +} + +/* + * Accessor to set the bit fields corresponding to interrupt `id` + * in GIC Redistributor ICFGR0, ICFGR1 and ICFGRE + */ +void gicr_set_icfgr(uintptr_t base, unsigned int id, unsigned int cfg) +{ + /* Interrupt configuration is a 2-bit field */ + unsigned int bit_shift = BIT_NUM(ICFG, id) << 1U; + + /* Clear the field, and insert required configuration */ + mmio_clrsetbits_32(base + GICR_OFFSET(ICFG, id), + (uint32_t)GIC_CFG_MASK << bit_shift, + (cfg & GIC_CFG_MASK) << bit_shift); +} diff --git a/drivers/arm/gic/v3/gicv3.mk b/drivers/arm/gic/v3/gicv3.mk new file mode 100644 index 0000000..89bce95 --- /dev/null +++ b/drivers/arm/gic/v3/gicv3.mk @@ -0,0 +1,58 @@ +# +# Copyright (c) 2013-2022, Arm Limited and Contributors. All rights reserved. +# Copyright (c) 2021, NVIDIA Corporation. All rights reserved. +# +# SPDX-License-Identifier: BSD-3-Clause +# + +# Default configuration values +GICV3_SUPPORT_GIC600 ?= 0 +GICV3_SUPPORT_GIC600AE_FMU ?= 0 +GICV3_IMPL_GIC600_MULTICHIP ?= 0 +GICV3_OVERRIDE_DISTIF_PWR_OPS ?= 0 +GIC_ENABLE_V4_EXTN ?= 0 +GIC_EXT_INTID ?= 0 +GIC600_ERRATA_WA_2384374 ?= ${GICV3_SUPPORT_GIC600} + +GICV3_SOURCES += drivers/arm/gic/v3/gicv3_main.c \ + drivers/arm/gic/v3/gicv3_helpers.c \ + drivers/arm/gic/v3/gicdv3_helpers.c \ + drivers/arm/gic/v3/gicrv3_helpers.c + +ifeq (${GICV3_SUPPORT_GIC600AE_FMU}, 1) +GICV3_SOURCES += drivers/arm/gic/v3/gic600ae_fmu.c \ + drivers/arm/gic/v3/gic600ae_fmu_helpers.c +endif + +ifeq (${GICV3_OVERRIDE_DISTIF_PWR_OPS}, 0) +GICV3_SOURCES += drivers/arm/gic/v3/arm_gicv3_common.c +endif + +GICV3_SOURCES += drivers/arm/gic/v3/gic-x00.c +ifeq (${GICV3_IMPL_GIC600_MULTICHIP}, 1) +GICV3_SOURCES += drivers/arm/gic/v3/gic600_multichip.c +endif + +# Set GIC-600 support +$(eval $(call assert_boolean,GICV3_SUPPORT_GIC600)) +$(eval $(call add_define,GICV3_SUPPORT_GIC600)) + +# Set GIC-600AE FMU support +$(eval $(call assert_boolean,GICV3_SUPPORT_GIC600AE_FMU)) +$(eval $(call add_define,GICV3_SUPPORT_GIC600AE_FMU)) + +# Set GIC-600 multichip support +$(eval $(call assert_boolean,GICV3_IMPL_GIC600_MULTICHIP)) +$(eval $(call add_define,GICV3_IMPL_GIC600_MULTICHIP)) + +# Set GICv4 extension +$(eval $(call assert_boolean,GIC_ENABLE_V4_EXTN)) +$(eval $(call add_define,GIC_ENABLE_V4_EXTN)) + +# Set support for extended PPI and SPI range +$(eval $(call assert_boolean,GIC_EXT_INTID)) +$(eval $(call add_define,GIC_EXT_INTID)) + +# Set errata workaround for GIC600/GIC600AE +$(eval $(call assert_boolean,GIC600_ERRATA_WA_2384374)) +$(eval $(call add_define,GIC600_ERRATA_WA_2384374)) diff --git a/drivers/arm/gic/v3/gicv3_helpers.c b/drivers/arm/gic/v3/gicv3_helpers.c new file mode 100644 index 0000000..b27debf --- /dev/null +++ b/drivers/arm/gic/v3/gicv3_helpers.c @@ -0,0 +1,460 @@ +/* + * Copyright (c) 2015-2023, Arm Limited and Contributors. All rights reserved. + * Copyright (c) 2023, NVIDIA Corporation. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> + +#include <arch.h> +#include <arch_helpers.h> +#include <common/debug.h> +#include <common/interrupt_props.h> +#include <drivers/arm/gic600_multichip.h> +#include <drivers/arm/gic_common.h> + +#include <platform_def.h> + +#include "../common/gic_common_private.h" +#include "gicv3_private.h" + +uintptr_t gicv3_get_multichip_base(uint32_t spi_id, uintptr_t gicd_base) +{ +#if GICV3_IMPL_GIC600_MULTICHIP + if (gic600_multichip_is_initialized()) { + return gic600_multichip_gicd_base_for_spi(spi_id); + } +#endif + return gicd_base; +} + +/****************************************************************************** + * This function marks the core as awake in the re-distributor and + * ensures that the interface is active. + *****************************************************************************/ +void gicv3_rdistif_mark_core_awake(uintptr_t gicr_base) +{ + /* + * The WAKER_PS_BIT should be changed to 0 + * only when WAKER_CA_BIT is 1. + */ + assert((gicr_read_waker(gicr_base) & WAKER_CA_BIT) != 0U); + + /* Mark the connected core as awake */ + gicr_write_waker(gicr_base, gicr_read_waker(gicr_base) & ~WAKER_PS_BIT); + + /* Wait till the WAKER_CA_BIT changes to 0 */ + while ((gicr_read_waker(gicr_base) & WAKER_CA_BIT) != 0U) { + } +} + +/****************************************************************************** + * This function marks the core as asleep in the re-distributor and ensures + * that the interface is quiescent. + *****************************************************************************/ +void gicv3_rdistif_mark_core_asleep(uintptr_t gicr_base) +{ + /* Mark the connected core as asleep */ + gicr_write_waker(gicr_base, gicr_read_waker(gicr_base) | WAKER_PS_BIT); + + /* Wait till the WAKER_CA_BIT changes to 1 */ + while ((gicr_read_waker(gicr_base) & WAKER_CA_BIT) == 0U) { + } +} + +/******************************************************************************* + * This function probes the Redistributor frames when the driver is initialised + * and saves their base addresses. These base addresses are used later to + * initialise each Redistributor interface. + ******************************************************************************/ +void gicv3_rdistif_base_addrs_probe(uintptr_t *rdistif_base_addrs, + unsigned int rdistif_num, + uintptr_t gicr_base, + mpidr_hash_fn mpidr_to_core_pos) +{ + u_register_t mpidr; + unsigned int proc_num; + uint64_t typer_val; + uintptr_t rdistif_base = gicr_base; + + assert(rdistif_base_addrs != NULL); + + /* + * Iterate over the Redistributor frames. Store the base address of each + * frame in the platform provided array. Use the "Processor Number" + * field to index into the array if the platform has not provided a hash + * function to convert an MPIDR (obtained from the "Affinity Value" + * field into a linear index. + */ + do { + typer_val = gicr_read_typer(rdistif_base); + if (mpidr_to_core_pos != NULL) { + mpidr = mpidr_from_gicr_typer(typer_val); + proc_num = mpidr_to_core_pos(mpidr); + } else { + proc_num = (typer_val >> TYPER_PROC_NUM_SHIFT) & + TYPER_PROC_NUM_MASK; + } + + if (proc_num < rdistif_num) { + rdistif_base_addrs[proc_num] = rdistif_base; + } + rdistif_base += gicv3_redist_size(typer_val); + } while ((typer_val & TYPER_LAST_BIT) == 0U); +} + +/******************************************************************************* + * Helper function to get the maximum SPI INTID + 1. + ******************************************************************************/ +unsigned int gicv3_get_spi_limit(uintptr_t gicd_base) +{ + unsigned int spi_limit; + unsigned int typer_reg = gicd_read_typer(gicd_base); + + /* (maximum SPI INTID + 1) is equal to 32 * (GICD_TYPER.ITLinesNumber+1) */ + spi_limit = ((typer_reg & TYPER_IT_LINES_NO_MASK) + 1U) << 5; + + /* Filter out special INTIDs 1020-1023 */ + if (spi_limit > (MAX_SPI_ID + 1U)) { + return MAX_SPI_ID + 1U; + } + + return spi_limit; +} + +#if GIC_EXT_INTID +/******************************************************************************* + * Helper function to get the maximum ESPI INTID + 1. + ******************************************************************************/ +unsigned int gicv3_get_espi_limit(uintptr_t gicd_base) +{ + unsigned int typer_reg = gicd_read_typer(gicd_base); + + /* Check if extended SPI range is implemented */ + if ((typer_reg & TYPER_ESPI) != 0U) { + /* + * (maximum ESPI INTID + 1) is equal to + * 32 * (GICD_TYPER.ESPI_range + 1) + 4096 + */ + return ((((typer_reg >> TYPER_ESPI_RANGE_SHIFT) & + TYPER_ESPI_RANGE_MASK) + 1U) << 5) + MIN_ESPI_ID; + } + + return 0U; +} +#endif /* GIC_EXT_INTID */ + +/******************************************************************************* + * Helper function to configure the default attributes of (E)SPIs. + ******************************************************************************/ +void gicv3_spis_config_defaults(uintptr_t gicd_base) +{ + unsigned int i, num_ints; +#if GIC_EXT_INTID + unsigned int num_eints; +#endif + + num_ints = gicv3_get_spi_limit(gicd_base); + INFO("Maximum SPI INTID supported: %u\n", num_ints - 1); + + /* Treat all (E)SPIs as G1NS by default. We do 32 at a time. */ + for (i = MIN_SPI_ID; i < num_ints; i += (1U << IGROUPR_SHIFT)) { + gicd_write_igroupr(gicv3_get_multichip_base(i, gicd_base), i, ~0U); + } + +#if GIC_EXT_INTID + num_eints = gicv3_get_espi_limit(gicd_base); + if (num_eints != 0U) { + INFO("Maximum ESPI INTID supported: %u\n", num_eints - 1); + + for (i = MIN_ESPI_ID; i < num_eints; + i += (1U << IGROUPR_SHIFT)) { + gicd_write_igroupr(gicv3_get_multichip_base(i, gicd_base), i, ~0U); + } + } else { + INFO("ESPI range is not implemented.\n"); + } +#endif + + /* Setup the default (E)SPI priorities doing four at a time */ + for (i = MIN_SPI_ID; i < num_ints; i += (1U << IPRIORITYR_SHIFT)) { + gicd_write_ipriorityr(gicv3_get_multichip_base(i, gicd_base), i, GICD_IPRIORITYR_DEF_VAL); + } + +#if GIC_EXT_INTID + for (i = MIN_ESPI_ID; i < num_eints; + i += (1U << IPRIORITYR_SHIFT)) { + gicd_write_ipriorityr(gicv3_get_multichip_base(i, gicd_base), i, GICD_IPRIORITYR_DEF_VAL); + } +#endif + /* + * Treat all (E)SPIs as level triggered by default, write 16 at a time + */ + for (i = MIN_SPI_ID; i < num_ints; i += (1U << ICFGR_SHIFT)) { + gicd_write_icfgr(gicv3_get_multichip_base(i, gicd_base), i, 0U); + } + +#if GIC_EXT_INTID + for (i = MIN_ESPI_ID; i < num_eints; i += (1U << ICFGR_SHIFT)) { + gicd_write_icfgr(gicv3_get_multichip_base(i, gicd_base), i, 0U); + } +#endif +} + +/******************************************************************************* + * Helper function to configure properties of secure (E)SPIs + ******************************************************************************/ +unsigned int gicv3_secure_spis_config_props(uintptr_t gicd_base, + const interrupt_prop_t *interrupt_props, + unsigned int interrupt_props_num) +{ + unsigned int i; + const interrupt_prop_t *current_prop; + unsigned long long gic_affinity_val; + unsigned int ctlr_enable = 0U; + + /* Make sure there's a valid property array */ + if (interrupt_props_num > 0U) { + assert(interrupt_props != NULL); + } + + for (i = 0U; i < interrupt_props_num; i++) { + current_prop = &interrupt_props[i]; + + unsigned int intr_num = current_prop->intr_num; + uintptr_t multichip_gicd_base; + + /* Skip SGI, (E)PPI and LPI interrupts */ + if (!IS_SPI(intr_num)) { + continue; + } + + multichip_gicd_base = + gicv3_get_multichip_base(intr_num, gicd_base); + + /* Configure this interrupt as a secure interrupt */ + gicd_clr_igroupr(multichip_gicd_base, intr_num); + + /* Configure this interrupt as G0 or a G1S interrupt */ + assert((current_prop->intr_grp == INTR_GROUP0) || + (current_prop->intr_grp == INTR_GROUP1S)); + + if (current_prop->intr_grp == INTR_GROUP1S) { + gicd_set_igrpmodr(multichip_gicd_base, intr_num); + ctlr_enable |= CTLR_ENABLE_G1S_BIT; + } else { + gicd_clr_igrpmodr(multichip_gicd_base, intr_num); + ctlr_enable |= CTLR_ENABLE_G0_BIT; + } + + /* Set interrupt configuration */ + gicd_set_icfgr(multichip_gicd_base, intr_num, + current_prop->intr_cfg); + + /* Set the priority of this interrupt */ + gicd_set_ipriorityr(multichip_gicd_base, intr_num, + current_prop->intr_pri); + + /* Target (E)SPIs to the primary CPU */ + gic_affinity_val = + gicd_irouter_val_from_mpidr(read_mpidr(), 0U); + gicd_write_irouter(multichip_gicd_base, intr_num, + gic_affinity_val); + + /* Enable this interrupt */ + gicd_set_isenabler(multichip_gicd_base, intr_num); + } + + return ctlr_enable; +} + +/******************************************************************************* + * Helper function to configure the default attributes of (E)PPIs/SGIs + ******************************************************************************/ +void gicv3_ppi_sgi_config_defaults(uintptr_t gicr_base) +{ + unsigned int i, ppi_regs_num, regs_num; + +#if GIC_EXT_INTID + /* Calculate number of PPI registers */ + ppi_regs_num = (unsigned int)((gicr_read_typer(gicr_base) >> + TYPER_PPI_NUM_SHIFT) & TYPER_PPI_NUM_MASK) + 1; + /* All other values except PPInum [0-2] are reserved */ + if (ppi_regs_num > 3U) { + ppi_regs_num = 1U; + } +#else + ppi_regs_num = 1U; +#endif + /* + * Disable all SGIs (imp. def.)/(E)PPIs before configuring them. + * This is a more scalable approach as it avoids clearing + * the enable bits in the GICD_CTLR. + */ + for (i = 0U; i < ppi_regs_num; ++i) { + gicr_write_icenabler(gicr_base, i, ~0U); + } + + /* Wait for pending writes to GICR_ICENABLER */ + gicr_wait_for_pending_write(gicr_base); + + /* 32 interrupt IDs per GICR_IGROUPR register */ + for (i = 0U; i < ppi_regs_num; ++i) { + /* Treat all SGIs/(E)PPIs as G1NS by default */ + gicr_write_igroupr(gicr_base, i, ~0U); + } + + /* 4 interrupt IDs per GICR_IPRIORITYR register */ + regs_num = ppi_regs_num << 3; + for (i = 0U; i < regs_num; ++i) { + /* Setup the default (E)PPI/SGI priorities doing 4 at a time */ + gicr_write_ipriorityr(gicr_base, i << 2, GICD_IPRIORITYR_DEF_VAL); + } + + /* 16 interrupt IDs per GICR_ICFGR register */ + regs_num = ppi_regs_num << 1; + for (i = (MIN_PPI_ID >> ICFGR_SHIFT); i < regs_num; ++i) { + /* Configure all (E)PPIs as level triggered by default */ + gicr_write_icfgr(gicr_base, i, 0U); + } +} + +/******************************************************************************* + * Helper function to configure properties of secure G0 and G1S (E)PPIs and SGIs + ******************************************************************************/ +unsigned int gicv3_secure_ppi_sgi_config_props(uintptr_t gicr_base, + const interrupt_prop_t *interrupt_props, + unsigned int interrupt_props_num) +{ + unsigned int i; + const interrupt_prop_t *current_prop; + unsigned int ctlr_enable = 0U; + + /* Make sure there's a valid property array */ + if (interrupt_props_num > 0U) { + assert(interrupt_props != NULL); + } + + for (i = 0U; i < interrupt_props_num; i++) { + current_prop = &interrupt_props[i]; + + unsigned int intr_num = current_prop->intr_num; + + /* Skip (E)SPI interrupt */ + if (!IS_SGI_PPI(intr_num)) { + continue; + } + + /* Configure this interrupt as a secure interrupt */ + gicr_clr_igroupr(gicr_base, intr_num); + + /* Configure this interrupt as G0 or a G1S interrupt */ + assert((current_prop->intr_grp == INTR_GROUP0) || + (current_prop->intr_grp == INTR_GROUP1S)); + + if (current_prop->intr_grp == INTR_GROUP1S) { + gicr_set_igrpmodr(gicr_base, intr_num); + ctlr_enable |= CTLR_ENABLE_G1S_BIT; + } else { + gicr_clr_igrpmodr(gicr_base, intr_num); + ctlr_enable |= CTLR_ENABLE_G0_BIT; + } + + /* Set the priority of this interrupt */ + gicr_set_ipriorityr(gicr_base, intr_num, + current_prop->intr_pri); + + /* + * Set interrupt configuration for (E)PPIs. + * Configurations for SGIs 0-15 are ignored. + */ + if (intr_num >= MIN_PPI_ID) { + gicr_set_icfgr(gicr_base, intr_num, + current_prop->intr_cfg); + } + + /* Enable this interrupt */ + gicr_set_isenabler(gicr_base, intr_num); + } + + return ctlr_enable; +} + +/** + * gicv3_rdistif_get_number_frames() - determine size of GICv3 GICR region + * @gicr_frame: base address of the GICR region to check + * + * This iterates over the GICR_TYPER registers of multiple GICR frames in + * a GICR region, to find the instance which has the LAST bit set. For most + * systems this corresponds to the number of cores handled by a redistributor, + * but there could be disabled cores among them. + * It assumes that each GICR region is fully accessible (till the LAST bit + * marks the end of the region). + * If a platform has multiple GICR regions, this function would need to be + * called multiple times, providing the respective GICR base address each time. + * + * Return: number of valid GICR frames (at least 1, up to PLATFORM_CORE_COUNT) + ******************************************************************************/ +unsigned int gicv3_rdistif_get_number_frames(const uintptr_t gicr_frame) +{ + uintptr_t rdistif_base = gicr_frame; + unsigned int count; + + for (count = 1U; count < PLATFORM_CORE_COUNT; count++) { + uint64_t typer_val = gicr_read_typer(rdistif_base); + + if ((typer_val & TYPER_LAST_BIT) != 0U) { + break; + } + rdistif_base += gicv3_redist_size(typer_val); + } + + return count; +} + +unsigned int gicv3_get_component_partnum(const uintptr_t gic_frame) +{ + unsigned int part_id; + + /* + * The lower 8 bits of PIDR0, complemented by the lower 4 bits of + * PIDR1 contain a part number identifying the GIC component at a + * particular base address. + */ + part_id = mmio_read_32(gic_frame + GICD_PIDR0_GICV3) & 0xff; + part_id |= (mmio_read_32(gic_frame + GICD_PIDR1_GICV3) << 8) & 0xf00; + + return part_id; +} + +/******************************************************************************* + * Helper function to return product ID and revision of GIC + * @gicd_base: base address of the GIC distributor + * @gic_prod_id: retrieved product id of GIC + * @gic_rev: retrieved revision of GIC + ******************************************************************************/ +void gicv3_get_component_prodid_rev(const uintptr_t gicd_base, + unsigned int *gic_prod_id, + uint8_t *gic_rev) +{ + unsigned int gicd_iidr; + uint8_t gic_variant; + + gicd_iidr = gicd_read_iidr(gicd_base); + *gic_prod_id = gicd_iidr >> IIDR_PRODUCT_ID_SHIFT; + *gic_prod_id &= IIDR_PRODUCT_ID_MASK; + + gic_variant = gicd_iidr >> IIDR_VARIANT_SHIFT; + gic_variant &= IIDR_VARIANT_MASK; + + *gic_rev = gicd_iidr >> IIDR_REV_SHIFT; + *gic_rev &= IIDR_REV_MASK; + + /* + * pack gic variant and gic_rev in 1 byte + * gic_rev = gic_variant[7:4] and gic_rev[0:3] + */ + *gic_rev = *gic_rev | gic_variant << 0x4; + +} diff --git a/drivers/arm/gic/v3/gicv3_main.c b/drivers/arm/gic/v3/gicv3_main.c new file mode 100644 index 0000000..3c99517 --- /dev/null +++ b/drivers/arm/gic/v3/gicv3_main.c @@ -0,0 +1,1391 @@ +/* + * Copyright (c) 2015-2023, Arm Limited and Contributors. All rights reserved. + * Copyright (c) 2023, NVIDIA Corporation. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> + +#include <arch.h> +#include <arch_helpers.h> +#include <common/debug.h> +#include <common/interrupt_props.h> +#include <drivers/arm/gic600_multichip.h> +#include <drivers/arm/gicv3.h> +#include <lib/spinlock.h> +#include <plat/common/platform.h> + +#include "gicv3_private.h" + +const gicv3_driver_data_t *gicv3_driver_data; + +/* + * Spinlock to guard registers needing read-modify-write. APIs protected by this + * spinlock are used either at boot time (when only a single CPU is active), or + * when the system is fully coherent. + */ +static spinlock_t gic_lock; + +/* + * Redistributor power operations are weakly bound so that they can be + * overridden + */ +#pragma weak gicv3_rdistif_off +#pragma weak gicv3_rdistif_on + +/* Check interrupt ID for SGI/(E)PPI and (E)SPIs */ +static bool is_sgi_ppi(unsigned int id); + +/* + * Helper macros to save and restore GICR and GICD registers + * corresponding to their numbers to and from the context + */ +#define RESTORE_GICR_REG(base, ctx, name, i) \ + gicr_write_##name((base), (i), (ctx)->gicr_##name[(i)]) + +#define SAVE_GICR_REG(base, ctx, name, i) \ + (ctx)->gicr_##name[(i)] = gicr_read_##name((base), (i)) + +/* Helper macros to save and restore GICD registers to and from the context */ +#define RESTORE_GICD_REGS(base, ctx, intr_num, reg, REG) \ + do { \ + for (unsigned int int_id = MIN_SPI_ID; int_id < (intr_num);\ + int_id += (1U << REG##R_SHIFT)) { \ + gicd_write_##reg((base), int_id, \ + (ctx)->gicd_##reg[(int_id - MIN_SPI_ID) >> \ + REG##R_SHIFT]); \ + } \ + } while (false) + +#define SAVE_GICD_REGS(base, ctx, intr_num, reg, REG) \ + do { \ + for (unsigned int int_id = MIN_SPI_ID; int_id < (intr_num);\ + int_id += (1U << REG##R_SHIFT)) { \ + (ctx)->gicd_##reg[(int_id - MIN_SPI_ID) >> \ + REG##R_SHIFT] = gicd_read_##reg((base), int_id); \ + } \ + } while (false) + +#if GIC_EXT_INTID +#define RESTORE_GICD_EREGS(base, ctx, intr_num, reg, REG) \ + do { \ + for (unsigned int int_id = MIN_ESPI_ID; int_id < (intr_num);\ + int_id += (1U << REG##R_SHIFT)) { \ + gicd_write_##reg((base), int_id, \ + (ctx)->gicd_##reg[(int_id - (MIN_ESPI_ID - \ + round_up(TOTAL_SPI_INTR_NUM, 1U << REG##R_SHIFT)))\ + >> REG##R_SHIFT]); \ + } \ + } while (false) + +#define SAVE_GICD_EREGS(base, ctx, intr_num, reg, REG) \ + do { \ + for (unsigned int int_id = MIN_ESPI_ID; int_id < (intr_num);\ + int_id += (1U << REG##R_SHIFT)) { \ + (ctx)->gicd_##reg[(int_id - (MIN_ESPI_ID - \ + round_up(TOTAL_SPI_INTR_NUM, 1U << REG##R_SHIFT)))\ + >> REG##R_SHIFT] = gicd_read_##reg((base), int_id);\ + } \ + } while (false) +#else +#define SAVE_GICD_EREGS(base, ctx, intr_num, reg, REG) +#define RESTORE_GICD_EREGS(base, ctx, intr_num, reg, REG) +#endif /* GIC_EXT_INTID */ + +/******************************************************************************* + * This function initialises the ARM GICv3 driver in EL3 with provided platform + * inputs. + ******************************************************************************/ +void __init gicv3_driver_init(const gicv3_driver_data_t *plat_driver_data) +{ + unsigned int gic_version; + unsigned int gicv2_compat; + + assert(plat_driver_data != NULL); + assert(plat_driver_data->gicd_base != 0U); + assert(plat_driver_data->rdistif_num != 0U); + assert(plat_driver_data->rdistif_base_addrs != NULL); + + assert(IS_IN_EL3()); + + assert((plat_driver_data->interrupt_props_num != 0U) ? + (plat_driver_data->interrupt_props != NULL) : 1); + + /* Check for system register support */ +#ifndef __aarch64__ + assert((read_id_pfr1() & + (ID_PFR1_GIC_MASK << ID_PFR1_GIC_SHIFT)) != 0U); +#else + assert((read_id_aa64pfr0_el1() & + (ID_AA64PFR0_GIC_MASK << ID_AA64PFR0_GIC_SHIFT)) != 0U); +#endif /* !__aarch64__ */ + + gic_version = gicd_read_pidr2(plat_driver_data->gicd_base); + gic_version >>= PIDR2_ARCH_REV_SHIFT; + gic_version &= PIDR2_ARCH_REV_MASK; + + /* Check GIC version */ +#if !GIC_ENABLE_V4_EXTN + assert(gic_version == ARCH_REV_GICV3); +#endif + /* + * Find out whether the GIC supports the GICv2 compatibility mode. + * The ARE_S bit resets to 0 if supported + */ + gicv2_compat = gicd_read_ctlr(plat_driver_data->gicd_base); + gicv2_compat >>= CTLR_ARE_S_SHIFT; + gicv2_compat = gicv2_compat & CTLR_ARE_S_MASK; + + if (plat_driver_data->gicr_base != 0U) { + /* + * Find the base address of each implemented Redistributor interface. + * The number of interfaces should be equal to the number of CPUs in the + * system. The memory for saving these addresses has to be allocated by + * the platform port + */ + gicv3_rdistif_base_addrs_probe(plat_driver_data->rdistif_base_addrs, + plat_driver_data->rdistif_num, + plat_driver_data->gicr_base, + plat_driver_data->mpidr_to_core_pos); +#if !HW_ASSISTED_COHERENCY + /* + * Flush the rdistif_base_addrs[] contents linked to the GICv3 driver. + */ + flush_dcache_range((uintptr_t)(plat_driver_data->rdistif_base_addrs), + plat_driver_data->rdistif_num * + sizeof(*(plat_driver_data->rdistif_base_addrs))); +#endif + } + gicv3_driver_data = plat_driver_data; + + /* + * The GIC driver data is initialized by the primary CPU with caches + * enabled. When the secondary CPU boots up, it initializes the + * GICC/GICR interface with the caches disabled. Hence flush the + * driver data to ensure coherency. This is not required if the + * platform has HW_ASSISTED_COHERENCY enabled. + */ +#if !HW_ASSISTED_COHERENCY + flush_dcache_range((uintptr_t)&gicv3_driver_data, + sizeof(gicv3_driver_data)); + flush_dcache_range((uintptr_t)gicv3_driver_data, + sizeof(*gicv3_driver_data)); +#endif + gicv3_check_erratas_applies(plat_driver_data->gicd_base); + + INFO("GICv%u with%s legacy support detected.\n", gic_version, + (gicv2_compat == 0U) ? "" : "out"); + INFO("ARM GICv%u driver initialized in EL3\n", gic_version); +} + +/******************************************************************************* + * This function initialises the GIC distributor interface based upon the data + * provided by the platform while initialising the driver. + ******************************************************************************/ +void __init gicv3_distif_init(void) +{ + unsigned int bitmap; + + assert(gicv3_driver_data != NULL); + assert(gicv3_driver_data->gicd_base != 0U); + + assert(IS_IN_EL3()); + + /* + * Clear the "enable" bits for G0/G1S/G1NS interrupts before configuring + * the ARE_S bit. The Distributor might generate a system error + * otherwise. + */ + gicd_clr_ctlr(gicv3_driver_data->gicd_base, + CTLR_ENABLE_G0_BIT | + CTLR_ENABLE_G1S_BIT | + CTLR_ENABLE_G1NS_BIT, + RWP_TRUE); + + /* Set the ARE_S and ARE_NS bit now that interrupts have been disabled */ + gicd_set_ctlr(gicv3_driver_data->gicd_base, + CTLR_ARE_S_BIT | CTLR_ARE_NS_BIT, RWP_TRUE); + + /* Set the default attribute of all (E)SPIs */ + gicv3_spis_config_defaults(gicv3_driver_data->gicd_base); + + bitmap = gicv3_secure_spis_config_props( + gicv3_driver_data->gicd_base, + gicv3_driver_data->interrupt_props, + gicv3_driver_data->interrupt_props_num); + + /* Enable the secure (E)SPIs now that they have been configured */ + gicd_set_ctlr(gicv3_driver_data->gicd_base, bitmap, RWP_TRUE); +} + +/******************************************************************************* + * This function initialises the GIC Redistributor interface of the calling CPU + * (identified by the 'proc_num' parameter) based upon the data provided by the + * platform while initialising the driver. + ******************************************************************************/ +void gicv3_rdistif_init(unsigned int proc_num) +{ + uintptr_t gicr_base; + unsigned int bitmap; + uint32_t ctlr; + + assert(gicv3_driver_data != NULL); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + assert(gicv3_driver_data->gicd_base != 0U); + + ctlr = gicd_read_ctlr(gicv3_driver_data->gicd_base); + assert((ctlr & CTLR_ARE_S_BIT) != 0U); + + assert(IS_IN_EL3()); + + /* Power on redistributor */ + gicv3_rdistif_on(proc_num); + + gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num]; + assert(gicr_base != 0U); + + /* Set the default attribute of all SGIs and (E)PPIs */ + gicv3_ppi_sgi_config_defaults(gicr_base); + + bitmap = gicv3_secure_ppi_sgi_config_props(gicr_base, + gicv3_driver_data->interrupt_props, + gicv3_driver_data->interrupt_props_num); + + /* Enable interrupt groups as required, if not already */ + if ((ctlr & bitmap) != bitmap) { + gicd_set_ctlr(gicv3_driver_data->gicd_base, bitmap, RWP_TRUE); + } +} + +/******************************************************************************* + * Functions to perform power operations on GIC Redistributor + ******************************************************************************/ +void gicv3_rdistif_off(unsigned int proc_num) +{ +} + +void gicv3_rdistif_on(unsigned int proc_num) +{ +} + +/******************************************************************************* + * This function enables the GIC CPU interface of the calling CPU using only + * system register accesses. + ******************************************************************************/ +void gicv3_cpuif_enable(unsigned int proc_num) +{ + uintptr_t gicr_base; + u_register_t scr_el3; + unsigned int icc_sre_el3; + + assert(gicv3_driver_data != NULL); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + assert(IS_IN_EL3()); + + /* Mark the connected core as awake */ + gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num]; + gicv3_rdistif_mark_core_awake(gicr_base); + + /* Disable the legacy interrupt bypass */ + icc_sre_el3 = ICC_SRE_DIB_BIT | ICC_SRE_DFB_BIT; + + /* + * Enable system register access for EL3 and allow lower exception + * levels to configure the same for themselves. If the legacy mode is + * not supported, the SRE bit is RAO/WI + */ + icc_sre_el3 |= (ICC_SRE_EN_BIT | ICC_SRE_SRE_BIT); + write_icc_sre_el3(read_icc_sre_el3() | icc_sre_el3); + + scr_el3 = read_scr_el3(); + + /* + * Switch to NS state to write Non secure ICC_SRE_EL1 and + * ICC_SRE_EL2 registers. + */ + write_scr_el3(scr_el3 | SCR_NS_BIT); + isb(); + + write_icc_sre_el2(read_icc_sre_el2() | icc_sre_el3); + write_icc_sre_el1(ICC_SRE_SRE_BIT); + isb(); + + /* Switch to secure state. */ + write_scr_el3(scr_el3 & (~SCR_NS_BIT)); + isb(); + + /* Write the secure ICC_SRE_EL1 register */ + write_icc_sre_el1(ICC_SRE_SRE_BIT); + isb(); + + /* Program the idle priority in the PMR */ + write_icc_pmr_el1(GIC_PRI_MASK); + + /* Enable Group0 interrupts */ + write_icc_igrpen0_el1(IGRPEN1_EL1_ENABLE_G0_BIT); + + /* Enable Group1 Secure interrupts */ + write_icc_igrpen1_el3(read_icc_igrpen1_el3() | + IGRPEN1_EL3_ENABLE_G1S_BIT); + /* and restore the original */ + write_scr_el3(scr_el3); + isb(); + /* Add DSB to ensure visibility of System register writes */ + dsb(); +} + +/******************************************************************************* + * This function disables the GIC CPU interface of the calling CPU using + * only system register accesses. + ******************************************************************************/ +void gicv3_cpuif_disable(unsigned int proc_num) +{ + uintptr_t gicr_base; + + assert(gicv3_driver_data != NULL); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + + assert(IS_IN_EL3()); + + /* Disable legacy interrupt bypass */ + write_icc_sre_el3(read_icc_sre_el3() | + (ICC_SRE_DIB_BIT | ICC_SRE_DFB_BIT)); + + /* Disable Group0 interrupts */ + write_icc_igrpen0_el1(read_icc_igrpen0_el1() & + ~IGRPEN1_EL1_ENABLE_G0_BIT); + + /* Disable Group1 Secure and Non-Secure interrupts */ + write_icc_igrpen1_el3(read_icc_igrpen1_el3() & + ~(IGRPEN1_EL3_ENABLE_G1NS_BIT | + IGRPEN1_EL3_ENABLE_G1S_BIT)); + + /* Synchronise accesses to group enable registers */ + isb(); + /* Add DSB to ensure visibility of System register writes */ + dsb(); + + gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num]; + assert(gicr_base != 0UL); + + /* + * dsb() already issued previously after clearing the CPU group + * enabled, apply below workaround to toggle the "DPG*" + * bits of GICR_CTLR register for unblocking event. + */ + gicv3_apply_errata_wa_2384374(gicr_base); + + /* Mark the connected core as asleep */ + gicv3_rdistif_mark_core_asleep(gicr_base); +} + +/******************************************************************************* + * This function returns the id of the highest priority pending interrupt at + * the GIC cpu interface. + ******************************************************************************/ +unsigned int gicv3_get_pending_interrupt_id(void) +{ + unsigned int id; + + assert(IS_IN_EL3()); + id = (uint32_t)read_icc_hppir0_el1() & HPPIR0_EL1_INTID_MASK; + + /* + * If the ID is special identifier corresponding to G1S or G1NS + * interrupt, then read the highest pending group 1 interrupt. + */ + if ((id == PENDING_G1S_INTID) || (id == PENDING_G1NS_INTID)) { + return (uint32_t)read_icc_hppir1_el1() & HPPIR1_EL1_INTID_MASK; + } + + return id; +} + +/******************************************************************************* + * This function returns the type of the highest priority pending interrupt at + * the GIC cpu interface. The return values can be one of the following : + * PENDING_G1S_INTID : The interrupt type is secure Group 1. + * PENDING_G1NS_INTID : The interrupt type is non secure Group 1. + * 0 - 1019 : The interrupt type is secure Group 0. + * GIC_SPURIOUS_INTERRUPT : there is no pending interrupt with + * sufficient priority to be signaled + ******************************************************************************/ +unsigned int gicv3_get_pending_interrupt_type(void) +{ + assert(IS_IN_EL3()); + return (uint32_t)read_icc_hppir0_el1() & HPPIR0_EL1_INTID_MASK; +} + +/******************************************************************************* + * This function returns the group that has been configured under by the + * interrupt controller for the given interrupt id i.e. either group0 or group1 + * Secure / Non Secure. The return value can be one of the following : + * INTR_GROUP0 : The interrupt type is a Secure Group 0 interrupt + * INTR_GROUP1S : The interrupt type is a Secure Group 1 secure interrupt + * INTR_GROUP1NS: The interrupt type is a Secure Group 1 non secure + * interrupt. + ******************************************************************************/ +unsigned int gicv3_get_interrupt_group(unsigned int id, unsigned int proc_num) +{ + unsigned int igroup, grpmodr; + uintptr_t gicr_base; + uintptr_t gicd_base; + + assert(IS_IN_EL3()); + assert(gicv3_driver_data != NULL); + + /* Ensure the parameters are valid */ + assert((id < PENDING_G1S_INTID) || (id >= MIN_LPI_ID)); + assert(proc_num < gicv3_driver_data->rdistif_num); + + /* All LPI interrupts are Group 1 non secure */ + if (id >= MIN_LPI_ID) { + return INTR_GROUP1NS; + } + + /* Check interrupt ID */ + if (is_sgi_ppi(id)) { + /* SGIs: 0-15, PPIs: 16-31, EPPIs: 1056-1119 */ + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num]; + igroup = gicr_get_igroupr(gicr_base, id); + grpmodr = gicr_get_igrpmodr(gicr_base, id); + } else { + /* SPIs: 32-1019, ESPIs: 4096-5119 */ + assert(gicv3_driver_data->gicd_base != 0U); + gicd_base = gicv3_get_multichip_base(id, gicv3_driver_data->gicd_base); + igroup = gicd_get_igroupr(gicd_base, id); + grpmodr = gicd_get_igrpmodr(gicd_base, id); + } + + /* + * If the IGROUP bit is set, then it is a Group 1 Non secure + * interrupt + */ + if (igroup != 0U) { + return INTR_GROUP1NS; + } + + /* If the GRPMOD bit is set, then it is a Group 1 Secure interrupt */ + if (grpmodr != 0U) { + return INTR_GROUP1S; + } + + /* Else it is a Group 0 Secure interrupt */ + return INTR_GROUP0; +} + +/***************************************************************************** + * Function to save and disable the GIC ITS register context. The power + * management of GIC ITS is implementation-defined and this function doesn't + * save any memory structures required to support ITS. As the sequence to save + * this state is implementation defined, it should be executed in platform + * specific code. Calling this function alone and then powering down the GIC and + * ITS without implementing the aforementioned platform specific code will + * corrupt the ITS state. + * + * This function must be invoked after the GIC CPU interface is disabled. + *****************************************************************************/ +void gicv3_its_save_disable(uintptr_t gits_base, + gicv3_its_ctx_t * const its_ctx) +{ + unsigned int i; + + assert(gicv3_driver_data != NULL); + assert(IS_IN_EL3()); + assert(its_ctx != NULL); + assert(gits_base != 0U); + + its_ctx->gits_ctlr = gits_read_ctlr(gits_base); + + /* Disable the ITS */ + gits_write_ctlr(gits_base, its_ctx->gits_ctlr & ~GITS_CTLR_ENABLED_BIT); + + /* Wait for quiescent state */ + gits_wait_for_quiescent_bit(gits_base); + + its_ctx->gits_cbaser = gits_read_cbaser(gits_base); + its_ctx->gits_cwriter = gits_read_cwriter(gits_base); + + for (i = 0U; i < ARRAY_SIZE(its_ctx->gits_baser); i++) { + its_ctx->gits_baser[i] = gits_read_baser(gits_base, i); + } +} + +/***************************************************************************** + * Function to restore the GIC ITS register context. The power + * management of GIC ITS is implementation defined and this function doesn't + * restore any memory structures required to support ITS. The assumption is + * that these structures are in memory and are retained during system suspend. + * + * This must be invoked before the GIC CPU interface is enabled. + *****************************************************************************/ +void gicv3_its_restore(uintptr_t gits_base, + const gicv3_its_ctx_t * const its_ctx) +{ + unsigned int i; + + assert(gicv3_driver_data != NULL); + assert(IS_IN_EL3()); + assert(its_ctx != NULL); + assert(gits_base != 0U); + + /* Assert that the GITS is disabled and quiescent */ + assert((gits_read_ctlr(gits_base) & GITS_CTLR_ENABLED_BIT) == 0U); + assert((gits_read_ctlr(gits_base) & GITS_CTLR_QUIESCENT_BIT) != 0U); + + gits_write_cbaser(gits_base, its_ctx->gits_cbaser); + gits_write_cwriter(gits_base, its_ctx->gits_cwriter); + + for (i = 0U; i < ARRAY_SIZE(its_ctx->gits_baser); i++) { + gits_write_baser(gits_base, i, its_ctx->gits_baser[i]); + } + + /* Restore the ITS CTLR but leave the ITS disabled */ + gits_write_ctlr(gits_base, its_ctx->gits_ctlr & ~GITS_CTLR_ENABLED_BIT); +} + +/***************************************************************************** + * Function to save the GIC Redistributor register context. This function + * must be invoked after CPU interface disable and prior to Distributor save. + *****************************************************************************/ +void gicv3_rdistif_save(unsigned int proc_num, + gicv3_redist_ctx_t * const rdist_ctx) +{ + uintptr_t gicr_base; + unsigned int i, ppi_regs_num, regs_num; + + assert(gicv3_driver_data != NULL); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + assert(IS_IN_EL3()); + assert(rdist_ctx != NULL); + + gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num]; + +#if GIC_EXT_INTID + /* Calculate number of PPI registers */ + ppi_regs_num = (unsigned int)((gicr_read_typer(gicr_base) >> + TYPER_PPI_NUM_SHIFT) & TYPER_PPI_NUM_MASK) + 1; + /* All other values except PPInum [0-2] are reserved */ + if (ppi_regs_num > 3U) { + ppi_regs_num = 1U; + } +#else + ppi_regs_num = 1U; +#endif + /* + * Wait for any write to GICR_CTLR to complete before trying to save any + * state. + */ + gicr_wait_for_pending_write(gicr_base); + + rdist_ctx->gicr_ctlr = gicr_read_ctlr(gicr_base); + + rdist_ctx->gicr_propbaser = gicr_read_propbaser(gicr_base); + rdist_ctx->gicr_pendbaser = gicr_read_pendbaser(gicr_base); + + /* 32 interrupt IDs per register */ + for (i = 0U; i < ppi_regs_num; ++i) { + SAVE_GICR_REG(gicr_base, rdist_ctx, igroupr, i); + SAVE_GICR_REG(gicr_base, rdist_ctx, isenabler, i); + SAVE_GICR_REG(gicr_base, rdist_ctx, ispendr, i); + SAVE_GICR_REG(gicr_base, rdist_ctx, isactiver, i); + SAVE_GICR_REG(gicr_base, rdist_ctx, igrpmodr, i); + } + + /* 16 interrupt IDs per GICR_ICFGR register */ + regs_num = ppi_regs_num << 1; + for (i = 0U; i < regs_num; ++i) { + SAVE_GICR_REG(gicr_base, rdist_ctx, icfgr, i); + } + + rdist_ctx->gicr_nsacr = gicr_read_nsacr(gicr_base); + + /* 4 interrupt IDs per GICR_IPRIORITYR register */ + regs_num = ppi_regs_num << 3; + for (i = 0U; i < regs_num; ++i) { + rdist_ctx->gicr_ipriorityr[i] = + gicr_ipriorityr_read(gicr_base, i); + } + + /* + * Call the pre-save hook that implements the IMP DEF sequence that may + * be required on some GIC implementations. As this may need to access + * the Redistributor registers, we pass it proc_num. + */ + gicv3_distif_pre_save(proc_num); +} + +/***************************************************************************** + * Function to restore the GIC Redistributor register context. We disable + * LPI and per-cpu interrupts before we start restore of the Redistributor. + * This function must be invoked after Distributor restore but prior to + * CPU interface enable. The pending and active interrupts are restored + * after the interrupts are fully configured and enabled. + *****************************************************************************/ +void gicv3_rdistif_init_restore(unsigned int proc_num, + const gicv3_redist_ctx_t * const rdist_ctx) +{ + uintptr_t gicr_base; + unsigned int i, ppi_regs_num, regs_num; + + assert(gicv3_driver_data != NULL); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + assert(IS_IN_EL3()); + assert(rdist_ctx != NULL); + + gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num]; + +#if GIC_EXT_INTID + /* Calculate number of PPI registers */ + ppi_regs_num = (unsigned int)((gicr_read_typer(gicr_base) >> + TYPER_PPI_NUM_SHIFT) & TYPER_PPI_NUM_MASK) + 1; + /* All other values except PPInum [0-2] are reserved */ + if (ppi_regs_num > 3U) { + ppi_regs_num = 1U; + } +#else + ppi_regs_num = 1U; +#endif + /* Power on redistributor */ + gicv3_rdistif_on(proc_num); + + /* + * Call the post-restore hook that implements the IMP DEF sequence that + * may be required on some GIC implementations. As this may need to + * access the Redistributor registers, we pass it proc_num. + */ + gicv3_distif_post_restore(proc_num); + + /* + * Disable all SGIs (imp. def.)/(E)PPIs before configuring them. + * This is a more scalable approach as it avoids clearing the enable + * bits in the GICD_CTLR. + */ + for (i = 0U; i < ppi_regs_num; ++i) { + gicr_write_icenabler(gicr_base, i, ~0U); + } + + /* Wait for pending writes to GICR_ICENABLER */ + gicr_wait_for_pending_write(gicr_base); + + /* + * Disable the LPIs to avoid unpredictable behavior when writing to + * GICR_PROPBASER and GICR_PENDBASER. + */ + gicr_write_ctlr(gicr_base, + rdist_ctx->gicr_ctlr & ~(GICR_CTLR_EN_LPIS_BIT)); + + /* Restore registers' content */ + gicr_write_propbaser(gicr_base, rdist_ctx->gicr_propbaser); + gicr_write_pendbaser(gicr_base, rdist_ctx->gicr_pendbaser); + + /* 32 interrupt IDs per register */ + for (i = 0U; i < ppi_regs_num; ++i) { + RESTORE_GICR_REG(gicr_base, rdist_ctx, igroupr, i); + RESTORE_GICR_REG(gicr_base, rdist_ctx, igrpmodr, i); + } + + /* 4 interrupt IDs per GICR_IPRIORITYR register */ + regs_num = ppi_regs_num << 3; + for (i = 0U; i < regs_num; ++i) { + gicr_ipriorityr_write(gicr_base, i, + rdist_ctx->gicr_ipriorityr[i]); + } + + /* 16 interrupt IDs per GICR_ICFGR register */ + regs_num = ppi_regs_num << 1; + for (i = 0U; i < regs_num; ++i) { + RESTORE_GICR_REG(gicr_base, rdist_ctx, icfgr, i); + } + + gicr_write_nsacr(gicr_base, rdist_ctx->gicr_nsacr); + + /* Restore after group and priorities are set. + * 32 interrupt IDs per register + */ + for (i = 0U; i < ppi_regs_num; ++i) { + RESTORE_GICR_REG(gicr_base, rdist_ctx, ispendr, i); + RESTORE_GICR_REG(gicr_base, rdist_ctx, isactiver, i); + } + + /* + * Wait for all writes to the Distributor to complete before enabling + * the SGI and (E)PPIs. + */ + gicr_wait_for_upstream_pending_write(gicr_base); + + /* 32 interrupt IDs per GICR_ISENABLER register */ + for (i = 0U; i < ppi_regs_num; ++i) { + RESTORE_GICR_REG(gicr_base, rdist_ctx, isenabler, i); + } + + /* + * Restore GICR_CTLR.Enable_LPIs bit and wait for pending writes in case + * the first write to GICR_CTLR was still in flight (this write only + * restores GICR_CTLR.Enable_LPIs and no waiting is required for this + * bit). + */ + gicr_write_ctlr(gicr_base, rdist_ctx->gicr_ctlr); + gicr_wait_for_pending_write(gicr_base); +} + +/***************************************************************************** + * Function to save the GIC Distributor register context. This function + * must be invoked after CPU interface disable and Redistributor save. + *****************************************************************************/ +void gicv3_distif_save(gicv3_dist_ctx_t * const dist_ctx) +{ + assert(gicv3_driver_data != NULL); + assert(gicv3_driver_data->gicd_base != 0U); + assert(IS_IN_EL3()); + assert(dist_ctx != NULL); + + uintptr_t gicd_base = gicv3_driver_data->gicd_base; + unsigned int num_ints = gicv3_get_spi_limit(gicd_base); +#if GIC_EXT_INTID + unsigned int num_eints = gicv3_get_espi_limit(gicd_base); +#endif + + /* Wait for pending write to complete */ + gicd_wait_for_pending_write(gicd_base); + + /* Save the GICD_CTLR */ + dist_ctx->gicd_ctlr = gicd_read_ctlr(gicd_base); + + /* Save GICD_IGROUPR for INTIDs 32 - 1019 */ + SAVE_GICD_REGS(gicd_base, dist_ctx, num_ints, igroupr, IGROUP); + + /* Save GICD_IGROUPRE for INTIDs 4096 - 5119 */ + SAVE_GICD_EREGS(gicd_base, dist_ctx, num_eints, igroupr, IGROUP); + + /* Save GICD_ISENABLER for INT_IDs 32 - 1019 */ + SAVE_GICD_REGS(gicd_base, dist_ctx, num_ints, isenabler, ISENABLE); + + /* Save GICD_ISENABLERE for INT_IDs 4096 - 5119 */ + SAVE_GICD_EREGS(gicd_base, dist_ctx, num_eints, isenabler, ISENABLE); + + /* Save GICD_ISPENDR for INTIDs 32 - 1019 */ + SAVE_GICD_REGS(gicd_base, dist_ctx, num_ints, ispendr, ISPEND); + + /* Save GICD_ISPENDRE for INTIDs 4096 - 5119 */ + SAVE_GICD_EREGS(gicd_base, dist_ctx, num_eints, ispendr, ISPEND); + + /* Save GICD_ISACTIVER for INTIDs 32 - 1019 */ + SAVE_GICD_REGS(gicd_base, dist_ctx, num_ints, isactiver, ISACTIVE); + + /* Save GICD_ISACTIVERE for INTIDs 4096 - 5119 */ + SAVE_GICD_EREGS(gicd_base, dist_ctx, num_eints, isactiver, ISACTIVE); + + /* Save GICD_IPRIORITYR for INTIDs 32 - 1019 */ + SAVE_GICD_REGS(gicd_base, dist_ctx, num_ints, ipriorityr, IPRIORITY); + + /* Save GICD_IPRIORITYRE for INTIDs 4096 - 5119 */ + SAVE_GICD_EREGS(gicd_base, dist_ctx, num_eints, ipriorityr, IPRIORITY); + + /* Save GICD_ICFGR for INTIDs 32 - 1019 */ + SAVE_GICD_REGS(gicd_base, dist_ctx, num_ints, icfgr, ICFG); + + /* Save GICD_ICFGRE for INTIDs 4096 - 5119 */ + SAVE_GICD_EREGS(gicd_base, dist_ctx, num_eints, icfgr, ICFG); + + /* Save GICD_IGRPMODR for INTIDs 32 - 1019 */ + SAVE_GICD_REGS(gicd_base, dist_ctx, num_ints, igrpmodr, IGRPMOD); + + /* Save GICD_IGRPMODRE for INTIDs 4096 - 5119 */ + SAVE_GICD_EREGS(gicd_base, dist_ctx, num_eints, igrpmodr, IGRPMOD); + + /* Save GICD_NSACR for INTIDs 32 - 1019 */ + SAVE_GICD_REGS(gicd_base, dist_ctx, num_ints, nsacr, NSAC); + + /* Save GICD_NSACRE for INTIDs 4096 - 5119 */ + SAVE_GICD_EREGS(gicd_base, dist_ctx, num_eints, nsacr, NSAC); + + /* Save GICD_IROUTER for INTIDs 32 - 1019 */ + SAVE_GICD_REGS(gicd_base, dist_ctx, num_ints, irouter, IROUTE); + + /* Save GICD_IROUTERE for INTIDs 4096 - 5119 */ + SAVE_GICD_EREGS(gicd_base, dist_ctx, num_eints, irouter, IROUTE); + + /* + * GICD_ITARGETSR<n> and GICD_SPENDSGIR<n> are RAZ/WI when + * GICD_CTLR.ARE_(S|NS) bits are set which is the case for our GICv3 + * driver. + */ +} + +/***************************************************************************** + * Function to restore the GIC Distributor register context. We disable G0, G1S + * and G1NS interrupt groups before we start restore of the Distributor. This + * function must be invoked prior to Redistributor restore and CPU interface + * enable. The pending and active interrupts are restored after the interrupts + * are fully configured and enabled. + *****************************************************************************/ +void gicv3_distif_init_restore(const gicv3_dist_ctx_t * const dist_ctx) +{ + assert(gicv3_driver_data != NULL); + assert(gicv3_driver_data->gicd_base != 0U); + assert(IS_IN_EL3()); + assert(dist_ctx != NULL); + + uintptr_t gicd_base = gicv3_driver_data->gicd_base; + + /* + * Clear the "enable" bits for G0/G1S/G1NS interrupts before configuring + * the ARE_S bit. The Distributor might generate a system error + * otherwise. + */ + gicd_clr_ctlr(gicd_base, + CTLR_ENABLE_G0_BIT | + CTLR_ENABLE_G1S_BIT | + CTLR_ENABLE_G1NS_BIT, + RWP_TRUE); + + /* Set the ARE_S and ARE_NS bit now that interrupts have been disabled */ + gicd_set_ctlr(gicd_base, CTLR_ARE_S_BIT | CTLR_ARE_NS_BIT, RWP_TRUE); + + unsigned int num_ints = gicv3_get_spi_limit(gicd_base); +#if GIC_EXT_INTID + unsigned int num_eints = gicv3_get_espi_limit(gicd_base); +#endif + /* Restore GICD_IGROUPR for INTIDs 32 - 1019 */ + RESTORE_GICD_REGS(gicd_base, dist_ctx, num_ints, igroupr, IGROUP); + + /* Restore GICD_IGROUPRE for INTIDs 4096 - 5119 */ + RESTORE_GICD_EREGS(gicd_base, dist_ctx, num_eints, igroupr, IGROUP); + + /* Restore GICD_IPRIORITYR for INTIDs 32 - 1019 */ + RESTORE_GICD_REGS(gicd_base, dist_ctx, num_ints, ipriorityr, IPRIORITY); + + /* Restore GICD_IPRIORITYRE for INTIDs 4096 - 5119 */ + RESTORE_GICD_EREGS(gicd_base, dist_ctx, num_eints, ipriorityr, IPRIORITY); + + /* Restore GICD_ICFGR for INTIDs 32 - 1019 */ + RESTORE_GICD_REGS(gicd_base, dist_ctx, num_ints, icfgr, ICFG); + + /* Restore GICD_ICFGRE for INTIDs 4096 - 5119 */ + RESTORE_GICD_EREGS(gicd_base, dist_ctx, num_eints, icfgr, ICFG); + + /* Restore GICD_IGRPMODR for INTIDs 32 - 1019 */ + RESTORE_GICD_REGS(gicd_base, dist_ctx, num_ints, igrpmodr, IGRPMOD); + + /* Restore GICD_IGRPMODRE for INTIDs 4096 - 5119 */ + RESTORE_GICD_EREGS(gicd_base, dist_ctx, num_eints, igrpmodr, IGRPMOD); + + /* Restore GICD_NSACR for INTIDs 32 - 1019 */ + RESTORE_GICD_REGS(gicd_base, dist_ctx, num_ints, nsacr, NSAC); + + /* Restore GICD_NSACRE for INTIDs 4096 - 5119 */ + RESTORE_GICD_EREGS(gicd_base, dist_ctx, num_eints, nsacr, NSAC); + + /* Restore GICD_IROUTER for INTIDs 32 - 1019 */ + RESTORE_GICD_REGS(gicd_base, dist_ctx, num_ints, irouter, IROUTE); + + /* Restore GICD_IROUTERE for INTIDs 4096 - 5119 */ + RESTORE_GICD_EREGS(gicd_base, dist_ctx, num_eints, irouter, IROUTE); + + /* + * Restore ISENABLER(E), ISPENDR(E) and ISACTIVER(E) after + * the interrupts are configured. + */ + + /* Restore GICD_ISENABLER for INT_IDs 32 - 1019 */ + RESTORE_GICD_REGS(gicd_base, dist_ctx, num_ints, isenabler, ISENABLE); + + /* Restore GICD_ISENABLERE for INT_IDs 4096 - 5119 */ + RESTORE_GICD_EREGS(gicd_base, dist_ctx, num_eints, isenabler, ISENABLE); + + /* Restore GICD_ISPENDR for INTIDs 32 - 1019 */ + RESTORE_GICD_REGS(gicd_base, dist_ctx, num_ints, ispendr, ISPEND); + + /* Restore GICD_ISPENDRE for INTIDs 4096 - 5119 */ + RESTORE_GICD_EREGS(gicd_base, dist_ctx, num_eints, ispendr, ISPEND); + + /* Restore GICD_ISACTIVER for INTIDs 32 - 1019 */ + RESTORE_GICD_REGS(gicd_base, dist_ctx, num_ints, isactiver, ISACTIVE); + + /* Restore GICD_ISACTIVERE for INTIDs 4096 - 5119 */ + RESTORE_GICD_EREGS(gicd_base, dist_ctx, num_eints, isactiver, ISACTIVE); + + /* Restore the GICD_CTLR */ + gicd_write_ctlr(gicd_base, dist_ctx->gicd_ctlr); + gicd_wait_for_pending_write(gicd_base); +} + +/******************************************************************************* + * This function gets the priority of the interrupt the processor is currently + * servicing. + ******************************************************************************/ +unsigned int gicv3_get_running_priority(void) +{ + return (unsigned int)read_icc_rpr_el1(); +} + +/******************************************************************************* + * This function checks if the interrupt identified by id is active (whether the + * state is either active, or active and pending). The proc_num is used if the + * interrupt is SGI or (E)PPI and programs the corresponding Redistributor + * interface. + ******************************************************************************/ +unsigned int gicv3_get_interrupt_active(unsigned int id, unsigned int proc_num) +{ + uintptr_t gicd_base; + + assert(gicv3_driver_data != NULL); + assert(gicv3_driver_data->gicd_base != 0U); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + + /* Check interrupt ID */ + if (is_sgi_ppi(id)) { + /* For SGIs: 0-15, PPIs: 16-31 and EPPIs: 1056-1119 */ + return gicr_get_isactiver( + gicv3_driver_data->rdistif_base_addrs[proc_num], id); + } + + /* For SPIs: 32-1019 and ESPIs: 4096-5119 */ + gicd_base = gicv3_get_multichip_base(id, gicv3_driver_data->gicd_base); + return gicd_get_isactiver(gicd_base, id); +} + +/******************************************************************************* + * This function enables the interrupt identified by id. The proc_num + * is used if the interrupt is SGI or PPI, and programs the corresponding + * Redistributor interface. + ******************************************************************************/ +void gicv3_enable_interrupt(unsigned int id, unsigned int proc_num) +{ + uintptr_t gicd_base; + + assert(gicv3_driver_data != NULL); + assert(gicv3_driver_data->gicd_base != 0U); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + + /* + * Ensure that any shared variable updates depending on out of band + * interrupt trigger are observed before enabling interrupt. + */ + dsbishst(); + + /* Check interrupt ID */ + if (is_sgi_ppi(id)) { + /* For SGIs: 0-15, PPIs: 16-31 and EPPIs: 1056-1119 */ + gicr_set_isenabler( + gicv3_driver_data->rdistif_base_addrs[proc_num], id); + } else { + /* For SPIs: 32-1019 and ESPIs: 4096-5119 */ + gicd_base = gicv3_get_multichip_base(id, gicv3_driver_data->gicd_base); + gicd_set_isenabler(gicd_base, id); + } +} + +/******************************************************************************* + * This function disables the interrupt identified by id. The proc_num + * is used if the interrupt is SGI or PPI, and programs the corresponding + * Redistributor interface. + ******************************************************************************/ +void gicv3_disable_interrupt(unsigned int id, unsigned int proc_num) +{ + uintptr_t gicd_base; + + assert(gicv3_driver_data != NULL); + assert(gicv3_driver_data->gicd_base != 0U); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + + /* + * Disable interrupt, and ensure that any shared variable updates + * depending on out of band interrupt trigger are observed afterwards. + */ + + /* Check interrupt ID */ + if (is_sgi_ppi(id)) { + /* For SGIs: 0-15, PPIs: 16-31 and EPPIs: 1056-1119 */ + gicr_set_icenabler( + gicv3_driver_data->rdistif_base_addrs[proc_num], id); + + /* Write to clear enable requires waiting for pending writes */ + gicr_wait_for_pending_write( + gicv3_driver_data->rdistif_base_addrs[proc_num]); + } else { + /* For SPIs: 32-1019 and ESPIs: 4096-5119 */ + gicd_base = gicv3_get_multichip_base(id, gicv3_driver_data->gicd_base); + gicd_set_icenabler(gicd_base, id); + + /* Write to clear enable requires waiting for pending writes */ + gicd_wait_for_pending_write(gicd_base); + } + + dsbishst(); +} + +/******************************************************************************* + * This function sets the interrupt priority as supplied for the given interrupt + * id. + ******************************************************************************/ +void gicv3_set_interrupt_priority(unsigned int id, unsigned int proc_num, + unsigned int priority) +{ + uintptr_t gicr_base; + uintptr_t gicd_base; + + assert(gicv3_driver_data != NULL); + assert(gicv3_driver_data->gicd_base != 0U); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + + /* Check interrupt ID */ + if (is_sgi_ppi(id)) { + /* For SGIs: 0-15, PPIs: 16-31 and EPPIs: 1056-1119 */ + gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num]; + gicr_set_ipriorityr(gicr_base, id, priority); + } else { + /* For SPIs: 32-1019 and ESPIs: 4096-5119 */ + gicd_base = gicv3_get_multichip_base(id, gicv3_driver_data->gicd_base); + gicd_set_ipriorityr(gicd_base, id, priority); + } +} + +/******************************************************************************* + * This function assigns group for the interrupt identified by id. The proc_num + * is used if the interrupt is SGI or (E)PPI, and programs the corresponding + * Redistributor interface. The group can be any of GICV3_INTR_GROUP* + ******************************************************************************/ +void gicv3_set_interrupt_group(unsigned int id, unsigned int proc_num, + unsigned int group) +{ + bool igroup = false, grpmod = false; + uintptr_t gicr_base; + uintptr_t gicd_base; + + assert(gicv3_driver_data != NULL); + assert(gicv3_driver_data->gicd_base != 0U); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + + switch (group) { + case INTR_GROUP1S: + igroup = false; + grpmod = true; + break; + case INTR_GROUP0: + igroup = false; + grpmod = false; + break; + case INTR_GROUP1NS: + igroup = true; + grpmod = false; + break; + default: + assert(false); + break; + } + + /* Check interrupt ID */ + if (is_sgi_ppi(id)) { + /* For SGIs: 0-15, PPIs: 16-31 and EPPIs: 1056-1119 */ + gicr_base = gicv3_driver_data->rdistif_base_addrs[proc_num]; + + igroup ? gicr_set_igroupr(gicr_base, id) : + gicr_clr_igroupr(gicr_base, id); + grpmod ? gicr_set_igrpmodr(gicr_base, id) : + gicr_clr_igrpmodr(gicr_base, id); + } else { + /* For SPIs: 32-1019 and ESPIs: 4096-5119 */ + + /* Serialize read-modify-write to Distributor registers */ + spin_lock(&gic_lock); + + gicd_base = gicv3_get_multichip_base(id, gicv3_driver_data->gicd_base); + + igroup ? gicd_set_igroupr(gicd_base, id) : + gicd_clr_igroupr(gicd_base, id); + grpmod ? gicd_set_igrpmodr(gicd_base, id) : + gicd_clr_igrpmodr(gicd_base, id); + + spin_unlock(&gic_lock); + } +} + +/******************************************************************************* + * This function raises the specified SGI of the specified group. + * + * The target parameter must be a valid MPIDR in the system. + ******************************************************************************/ +void gicv3_raise_sgi(unsigned int sgi_num, gicv3_irq_group_t group, + u_register_t target) +{ + unsigned int tgt, aff3, aff2, aff1, aff0; + uint64_t sgi_val; + + /* Verify interrupt number is in the SGI range */ + assert((sgi_num >= MIN_SGI_ID) && (sgi_num < MIN_PPI_ID)); + + /* Extract affinity fields from target */ + aff0 = MPIDR_AFFLVL0_VAL(target); + aff1 = MPIDR_AFFLVL1_VAL(target); + aff2 = MPIDR_AFFLVL2_VAL(target); + aff3 = MPIDR_AFFLVL3_VAL(target); + + /* + * Make target list from affinity 0, and ensure GICv3 SGI can target + * this PE. + */ + assert(aff0 < GICV3_MAX_SGI_TARGETS); + tgt = BIT_32(aff0); + + /* Raise SGI to PE specified by its affinity */ + sgi_val = GICV3_SGIR_VALUE(aff3, aff2, aff1, sgi_num, SGIR_IRM_TO_AFF, + tgt); + + /* + * Ensure that any shared variable updates depending on out of band + * interrupt trigger are observed before raising SGI. + */ + dsbishst(); + + switch (group) { + case GICV3_G0: + write_icc_sgi0r_el1(sgi_val); + break; + case GICV3_G1NS: + write_icc_asgi1r(sgi_val); + break; + case GICV3_G1S: + write_icc_sgi1r(sgi_val); + break; + default: + assert(false); + break; + } + + isb(); +} + +/******************************************************************************* + * This function sets the interrupt routing for the given (E)SPI interrupt id. + * The interrupt routing is specified in routing mode and mpidr. + * + * The routing mode can be either of: + * - GICV3_IRM_ANY + * - GICV3_IRM_PE + * + * The mpidr is the affinity of the PE to which the interrupt will be routed, + * and is ignored for routing mode GICV3_IRM_ANY. + ******************************************************************************/ +void gicv3_set_spi_routing(unsigned int id, unsigned int irm, u_register_t mpidr) +{ + unsigned long long aff; + uint64_t router; + uintptr_t gicd_base; + + assert(gicv3_driver_data != NULL); + assert(gicv3_driver_data->gicd_base != 0U); + + assert((irm == GICV3_IRM_ANY) || (irm == GICV3_IRM_PE)); + + assert(IS_SPI(id)); + + aff = gicd_irouter_val_from_mpidr(mpidr, irm); + gicd_base = gicv3_get_multichip_base(id, gicv3_driver_data->gicd_base); + gicd_write_irouter(gicd_base, id, aff); + + /* + * In implementations that do not require 1 of N distribution of SPIs, + * IRM might be RAZ/WI. Read back and verify IRM bit. + */ + if (irm == GICV3_IRM_ANY) { + router = gicd_read_irouter(gicd_base, id); + if (((router >> IROUTER_IRM_SHIFT) & IROUTER_IRM_MASK) == 0U) { + ERROR("GICv3 implementation doesn't support routing ANY\n"); + panic(); + } + } +} + +/******************************************************************************* + * This function clears the pending status of an interrupt identified by id. + * The proc_num is used if the interrupt is SGI or (E)PPI, and programs the + * corresponding Redistributor interface. + ******************************************************************************/ +void gicv3_clear_interrupt_pending(unsigned int id, unsigned int proc_num) +{ + uintptr_t gicd_base; + + assert(gicv3_driver_data != NULL); + assert(gicv3_driver_data->gicd_base != 0U); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + + /* + * Clear pending interrupt, and ensure that any shared variable updates + * depending on out of band interrupt trigger are observed afterwards. + */ + + /* Check interrupt ID */ + if (is_sgi_ppi(id)) { + /* For SGIs: 0-15, PPIs: 16-31 and EPPIs: 1056-1119 */ + gicr_set_icpendr( + gicv3_driver_data->rdistif_base_addrs[proc_num], id); + } else { + /* For SPIs: 32-1019 and ESPIs: 4096-5119 */ + gicd_base = gicv3_get_multichip_base(id, gicv3_driver_data->gicd_base); + gicd_set_icpendr(gicd_base, id); + } + + dsbishst(); +} + +/******************************************************************************* + * This function sets the pending status of an interrupt identified by id. + * The proc_num is used if the interrupt is SGI or PPI and programs the + * corresponding Redistributor interface. + ******************************************************************************/ +void gicv3_set_interrupt_pending(unsigned int id, unsigned int proc_num) +{ + uintptr_t gicd_base; + + assert(gicv3_driver_data != NULL); + assert(gicv3_driver_data->gicd_base != 0U); + assert(proc_num < gicv3_driver_data->rdistif_num); + assert(gicv3_driver_data->rdistif_base_addrs != NULL); + + /* + * Ensure that any shared variable updates depending on out of band + * interrupt trigger are observed before setting interrupt pending. + */ + dsbishst(); + + /* Check interrupt ID */ + if (is_sgi_ppi(id)) { + /* For SGIs: 0-15, PPIs: 16-31 and EPPIs: 1056-1119 */ + gicr_set_ispendr( + gicv3_driver_data->rdistif_base_addrs[proc_num], id); + } else { + /* For SPIs: 32-1019 and ESPIs: 4096-5119 */ + gicd_base = gicv3_get_multichip_base(id, gicv3_driver_data->gicd_base); + gicd_set_ispendr(gicd_base, id); + } +} + +/******************************************************************************* + * This function sets the PMR register with the supplied value. Returns the + * original PMR. + ******************************************************************************/ +unsigned int gicv3_set_pmr(unsigned int mask) +{ + unsigned int old_mask; + + old_mask = (unsigned int)read_icc_pmr_el1(); + + /* + * Order memory updates w.r.t. PMR write, and ensure they're visible + * before potential out of band interrupt trigger because of PMR update. + * PMR system register writes are self-synchronizing, so no ISB required + * thereafter. + */ + dsbishst(); + write_icc_pmr_el1(mask); + + return old_mask; +} + +/******************************************************************************* + * This function delegates the responsibility of discovering the corresponding + * Redistributor frames to each CPU itself. It is a modified version of + * gicv3_rdistif_base_addrs_probe() and is executed by each CPU in the platform + * unlike the previous way in which only the Primary CPU did the discovery of + * all the Redistributor frames for every CPU. It also handles the scenario in + * which the frames of various CPUs are not contiguous in physical memory. + ******************************************************************************/ +int gicv3_rdistif_probe(const uintptr_t gicr_frame) +{ + u_register_t mpidr, mpidr_self; + unsigned int proc_num; + uint64_t typer_val; + uintptr_t rdistif_base; + bool gicr_frame_found = false; + + assert(gicv3_driver_data->gicr_base == 0U); + + if (plat_can_cmo()) { + /* Ensure this function is called with Data Cache enabled */ +#ifndef __aarch64__ + assert((read_sctlr() & SCTLR_C_BIT) != 0U); +#else + assert((read_sctlr_el3() & SCTLR_C_BIT) != 0U); +#endif /* !__aarch64__ */ + } + + mpidr_self = read_mpidr_el1() & MPIDR_AFFINITY_MASK; + rdistif_base = gicr_frame; + do { + typer_val = gicr_read_typer(rdistif_base); + mpidr = mpidr_from_gicr_typer(typer_val); + if (gicv3_driver_data->mpidr_to_core_pos != NULL) { + proc_num = gicv3_driver_data->mpidr_to_core_pos(mpidr); + } else { + proc_num = (unsigned int)(typer_val >> + TYPER_PROC_NUM_SHIFT) & TYPER_PROC_NUM_MASK; + } + if (mpidr == mpidr_self) { + /* The base address doesn't need to be initialized on + * every warm boot. + */ + if (gicv3_driver_data->rdistif_base_addrs[proc_num] + != 0U) { + return 0; + } + gicv3_driver_data->rdistif_base_addrs[proc_num] = + rdistif_base; + gicr_frame_found = true; + break; + } + rdistif_base += gicv3_redist_size(typer_val); + } while ((typer_val & TYPER_LAST_BIT) == 0U); + + if (!gicr_frame_found) { + return -1; + } + + /* + * Flush the driver data to ensure coherency. This is + * not required if platform has HW_ASSISTED_COHERENCY + * enabled. + */ +#if !HW_ASSISTED_COHERENCY + /* + * Flush the rdistif_base_addrs[] contents linked to the GICv3 driver. + */ + flush_dcache_range((uintptr_t)&(gicv3_driver_data->rdistif_base_addrs[proc_num]), + sizeof(*(gicv3_driver_data->rdistif_base_addrs))); +#endif + return 0; /* Found matching GICR frame */ +} + +/****************************************************************************** + * This function checks the interrupt ID and returns true for SGIs and (E)PPIs + * and false for (E)SPIs IDs. + *****************************************************************************/ +static bool is_sgi_ppi(unsigned int id) +{ + /* SGIs: 0-15, PPIs: 16-31, EPPIs: 1056-1119 */ + if (IS_SGI_PPI(id)) { + return true; + } + + /* SPIs: 32-1019, ESPIs: 4096-5119 */ + if (IS_SPI(id)) { + return false; + } + + assert(false); + panic(); +} diff --git a/drivers/arm/gic/v3/gicv3_private.h b/drivers/arm/gic/v3/gicv3_private.h new file mode 100644 index 0000000..8ad251b --- /dev/null +++ b/drivers/arm/gic/v3/gicv3_private.h @@ -0,0 +1,709 @@ +/* + * Copyright (c) 2015-2021, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2023, NVIDIA Corporation. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#ifndef GICV3_PRIVATE_H +#define GICV3_PRIVATE_H + +#include <assert.h> +#include <stdint.h> + +#include <drivers/arm/gic_common.h> +#include <drivers/arm/gicv3.h> +#include <lib/mmio.h> + +#include "../common/gic_common_private.h" + +/******************************************************************************* + * GICv3 private macro definitions + ******************************************************************************/ + +/* Constants to indicate the status of the RWP bit */ +#define RWP_TRUE U(1) +#define RWP_FALSE U(0) + +/* Calculate GIC register bit number corresponding to its interrupt ID */ +#define BIT_NUM(REG, id) \ + ((id) & ((1U << REG##R_SHIFT) - 1U)) + +/* + * Calculate 8, 32 and 64-bit GICD register offset + * corresponding to its interrupt ID + */ +#if GIC_EXT_INTID + /* GICv3.1 */ +#define GICD_OFFSET_8(REG, id) \ + (((id) <= MAX_SPI_ID) ? \ + GICD_##REG##R + (uintptr_t)(id) : \ + GICD_##REG##RE + (uintptr_t)(id) - MIN_ESPI_ID) + +#define GICD_OFFSET(REG, id) \ + (((id) <= MAX_SPI_ID) ? \ + GICD_##REG##R + (((uintptr_t)(id) >> REG##R_SHIFT) << 2) : \ + GICD_##REG##RE + ((((uintptr_t)(id) - MIN_ESPI_ID) >> \ + REG##R_SHIFT) << 2)) + +#define GICD_OFFSET_64(REG, id) \ + (((id) <= MAX_SPI_ID) ? \ + GICD_##REG##R + (((uintptr_t)(id) >> REG##R_SHIFT) << 3) : \ + GICD_##REG##RE + ((((uintptr_t)(id) - MIN_ESPI_ID) >> \ + REG##R_SHIFT) << 3)) + +#else /* GICv3 */ +#define GICD_OFFSET_8(REG, id) \ + (GICD_##REG##R + (uintptr_t)(id)) + +#define GICD_OFFSET(REG, id) \ + (GICD_##REG##R + (((uintptr_t)(id) >> REG##R_SHIFT) << 2)) + +#define GICD_OFFSET_64(REG, id) \ + (GICD_##REG##R + (((uintptr_t)(id) >> REG##R_SHIFT) << 3)) +#endif /* GIC_EXT_INTID */ + +/* + * Read/Write 8, 32 and 64-bit GIC Distributor register + * corresponding to its interrupt ID + */ +#define GICD_READ(REG, base, id) \ + mmio_read_32((base) + GICD_OFFSET(REG, (id))) + +#define GICD_READ_64(REG, base, id) \ + mmio_read_64((base) + GICD_OFFSET_64(REG, (id))) + +#define GICD_WRITE_8(REG, base, id, val) \ + mmio_write_8((base) + GICD_OFFSET_8(REG, (id)), (val)) + +#define GICD_WRITE(REG, base, id, val) \ + mmio_write_32((base) + GICD_OFFSET(REG, (id)), (val)) + +#define GICD_WRITE_64(REG, base, id, val) \ + mmio_write_64((base) + GICD_OFFSET_64(REG, (id)), (val)) + +/* + * Bit operations on GIC Distributor register corresponding + * to its interrupt ID + */ +/* Get bit in GIC Distributor register */ +#define GICD_GET_BIT(REG, base, id) \ + ((mmio_read_32((base) + GICD_OFFSET(REG, (id))) >> \ + BIT_NUM(REG, (id))) & 1U) + +/* Set bit in GIC Distributor register */ +#define GICD_SET_BIT(REG, base, id) \ + mmio_setbits_32((base) + GICD_OFFSET(REG, (id)), \ + ((uint32_t)1 << BIT_NUM(REG, (id)))) + +/* Clear bit in GIC Distributor register */ +#define GICD_CLR_BIT(REG, base, id) \ + mmio_clrbits_32((base) + GICD_OFFSET(REG, (id)), \ + ((uint32_t)1 << BIT_NUM(REG, (id)))) + +/* Write bit in GIC Distributor register */ +#define GICD_WRITE_BIT(REG, base, id) \ + mmio_write_32((base) + GICD_OFFSET(REG, (id)), \ + ((uint32_t)1 << BIT_NUM(REG, (id)))) + +/* + * Calculate 8 and 32-bit GICR register offset + * corresponding to its interrupt ID + */ +#if GIC_EXT_INTID + /* GICv3.1 */ +#define GICR_OFFSET_8(REG, id) \ + (((id) <= MAX_PPI_ID) ? \ + GICR_##REG##R + (uintptr_t)(id) : \ + GICR_##REG##R + (uintptr_t)(id) - (MIN_EPPI_ID - MIN_SPI_ID)) + +#define GICR_OFFSET(REG, id) \ + (((id) <= MAX_PPI_ID) ? \ + GICR_##REG##R + (((uintptr_t)(id) >> REG##R_SHIFT) << 2) : \ + GICR_##REG##R + ((((uintptr_t)(id) - (MIN_EPPI_ID - MIN_SPI_ID))\ + >> REG##R_SHIFT) << 2)) +#else /* GICv3 */ +#define GICR_OFFSET_8(REG, id) \ + (GICR_##REG##R + (uintptr_t)(id)) + +#define GICR_OFFSET(REG, id) \ + (GICR_##REG##R + (((uintptr_t)(id) >> REG##R_SHIFT) << 2)) +#endif /* GIC_EXT_INTID */ + +/* Read/Write GIC Redistributor register corresponding to its interrupt ID */ +#define GICR_READ(REG, base, id) \ + mmio_read_32((base) + GICR_OFFSET(REG, (id))) + +#define GICR_WRITE_8(REG, base, id, val) \ + mmio_write_8((base) + GICR_OFFSET_8(REG, (id)), (val)) + +#define GICR_WRITE(REG, base, id, val) \ + mmio_write_32((base) + GICR_OFFSET(REG, (id)), (val)) + +/* + * Bit operations on GIC Redistributor register + * corresponding to its interrupt ID + */ +/* Get bit in GIC Redistributor register */ +#define GICR_GET_BIT(REG, base, id) \ + ((mmio_read_32((base) + GICR_OFFSET(REG, (id))) >> \ + BIT_NUM(REG, (id))) & 1U) + +/* Write bit in GIC Redistributor register */ +#define GICR_WRITE_BIT(REG, base, id) \ + mmio_write_32((base) + GICR_OFFSET(REG, (id)), \ + ((uint32_t)1 << BIT_NUM(REG, (id)))) + +/* Set bit in GIC Redistributor register */ +#define GICR_SET_BIT(REG, base, id) \ + mmio_setbits_32((base) + GICR_OFFSET(REG, (id)), \ + ((uint32_t)1 << BIT_NUM(REG, (id)))) + +/* Clear bit in GIC Redistributor register */ +#define GICR_CLR_BIT(REG, base, id) \ + mmio_clrbits_32((base) + GICR_OFFSET(REG, (id)), \ + ((uint32_t)1 << BIT_NUM(REG, (id)))) + +/* + * Macro to convert an mpidr to a value suitable for programming into a + * GICD_IROUTER. Bits[31:24] in the MPIDR are cleared as they are not relevant + * to GICv3. + */ +static inline u_register_t gicd_irouter_val_from_mpidr(u_register_t mpidr, + unsigned int irm) +{ + return (mpidr & MPIDR_AFFINITY_MASK) | + ((irm & IROUTER_IRM_MASK) << IROUTER_IRM_SHIFT); +} + +/* + * Macro to convert a GICR_TYPER affinity value into a MPIDR value. Bits[31:24] + * are zeroes. + */ +#ifdef __aarch64__ +static inline u_register_t mpidr_from_gicr_typer(uint64_t typer_val) +{ + return (((typer_val >> 56) & MPIDR_AFFLVL_MASK) << MPIDR_AFF3_SHIFT) | + ((typer_val >> 32) & U(0xffffff)); +} +#else +static inline u_register_t mpidr_from_gicr_typer(uint64_t typer_val) +{ + return (((typer_val) >> 32) & U(0xffffff)); +} +#endif + +/******************************************************************************* + * GICv3 private global variables declarations + ******************************************************************************/ +extern const gicv3_driver_data_t *gicv3_driver_data; + +/******************************************************************************* + * Private GICv3 function prototypes for accessing entire registers. + * Note: The raw register values correspond to multiple interrupt IDs and + * the number of interrupt IDs involved depends on the register accessed. + ******************************************************************************/ +unsigned int gicd_read_igrpmodr(uintptr_t base, unsigned int id); +unsigned int gicr_read_ipriorityr(uintptr_t base, unsigned int id); +void gicd_write_igrpmodr(uintptr_t base, unsigned int id, unsigned int val); +void gicr_write_ipriorityr(uintptr_t base, unsigned int id, unsigned int val); + +/******************************************************************************* + * Private GICv3 function prototypes for accessing the GIC registers + * corresponding to a single interrupt ID. These functions use bitwise + * operations or appropriate register accesses to modify or return + * the bit-field corresponding the single interrupt ID. + ******************************************************************************/ +unsigned int gicd_get_igrpmodr(uintptr_t base, unsigned int id); +unsigned int gicr_get_igrpmodr(uintptr_t base, unsigned int id); +unsigned int gicr_get_igroupr(uintptr_t base, unsigned int id); +unsigned int gicr_get_isactiver(uintptr_t base, unsigned int id); +void gicd_set_igrpmodr(uintptr_t base, unsigned int id); +void gicr_set_igrpmodr(uintptr_t base, unsigned int id); +void gicr_set_isenabler(uintptr_t base, unsigned int id); +void gicr_set_icenabler(uintptr_t base, unsigned int id); +void gicr_set_ispendr(uintptr_t base, unsigned int id); +void gicr_set_icpendr(uintptr_t base, unsigned int id); +void gicr_set_igroupr(uintptr_t base, unsigned int id); +void gicd_clr_igrpmodr(uintptr_t base, unsigned int id); +void gicr_clr_igrpmodr(uintptr_t base, unsigned int id); +void gicr_clr_igroupr(uintptr_t base, unsigned int id); +void gicr_set_ipriorityr(uintptr_t base, unsigned int id, unsigned int pri); +void gicr_set_icfgr(uintptr_t base, unsigned int id, unsigned int cfg); + +/******************************************************************************* + * Private GICv3 helper function prototypes + ******************************************************************************/ +uintptr_t gicv3_get_multichip_base(uint32_t spi_id, uintptr_t gicd_base); +unsigned int gicv3_get_spi_limit(uintptr_t gicd_base); +unsigned int gicv3_get_espi_limit(uintptr_t gicd_base); +void gicv3_spis_config_defaults(uintptr_t gicd_base); +void gicv3_ppi_sgi_config_defaults(uintptr_t gicr_base); +unsigned int gicv3_secure_ppi_sgi_config_props(uintptr_t gicr_base, + const interrupt_prop_t *interrupt_props, + unsigned int interrupt_props_num); +unsigned int gicv3_secure_spis_config_props(uintptr_t gicd_base, + const interrupt_prop_t *interrupt_props, + unsigned int interrupt_props_num); +void gicv3_rdistif_base_addrs_probe(uintptr_t *rdistif_base_addrs, + unsigned int rdistif_num, + uintptr_t gicr_base, + mpidr_hash_fn mpidr_to_core_pos); +void gicv3_rdistif_mark_core_awake(uintptr_t gicr_base); +void gicv3_rdistif_mark_core_asleep(uintptr_t gicr_base); + +/******************************************************************************* + * GIC Distributor interface accessors + ******************************************************************************/ +/* + * Wait for updates to: + * GICD_CTLR[2:0] - the Group Enables + * GICD_CTLR[7:4] - the ARE bits, E1NWF bit and DS bit + * GICD_ICENABLER<n> - the clearing of enable state for SPIs + */ +static inline void gicd_wait_for_pending_write(uintptr_t gicd_base) +{ + while ((gicd_read_ctlr(gicd_base) & GICD_CTLR_RWP_BIT) != 0U) { + } +} + +static inline uint32_t gicd_read_pidr2(uintptr_t base) +{ + return mmio_read_32(base + GICD_PIDR2_GICV3); +} + +static inline uint64_t gicd_read_irouter(uintptr_t base, unsigned int id) +{ + assert(id >= MIN_SPI_ID); + return GICD_READ_64(IROUTE, base, id); +} + +static inline void gicd_write_irouter(uintptr_t base, + unsigned int id, + uint64_t affinity) +{ + assert(id >= MIN_SPI_ID); + GICD_WRITE_64(IROUTE, base, id, affinity); +} + +static inline void gicd_clr_ctlr(uintptr_t base, + unsigned int bitmap, + unsigned int rwp) +{ + gicd_write_ctlr(base, gicd_read_ctlr(base) & ~bitmap); + if (rwp != 0U) { + gicd_wait_for_pending_write(base); + } +} + +static inline void gicd_set_ctlr(uintptr_t base, + unsigned int bitmap, + unsigned int rwp) +{ + gicd_write_ctlr(base, gicd_read_ctlr(base) | bitmap); + if (rwp != 0U) { + gicd_wait_for_pending_write(base); + } +} + +/******************************************************************************* + * GIC Redistributor interface accessors + ******************************************************************************/ +static inline uint32_t gicr_read_ctlr(uintptr_t base) +{ + return mmio_read_32(base + GICR_CTLR); +} + +static inline void gicr_write_ctlr(uintptr_t base, uint32_t val) +{ + mmio_write_32(base + GICR_CTLR, val); +} + +static inline uint64_t gicr_read_typer(uintptr_t base) +{ + return mmio_read_64(base + GICR_TYPER); +} + +static inline uint32_t gicr_read_waker(uintptr_t base) +{ + return mmio_read_32(base + GICR_WAKER); +} + +static inline void gicr_write_waker(uintptr_t base, uint32_t val) +{ + mmio_write_32(base + GICR_WAKER, val); +} + +/* + * Wait for updates to: + * GICR_ICENABLER0 + * GICR_CTLR.DPG1S + * GICR_CTLR.DPG1NS + * GICR_CTLR.DPG0 + * GICR_CTLR, which clears EnableLPIs from 1 to 0 + */ +static inline void gicr_wait_for_pending_write(uintptr_t gicr_base) +{ + while ((gicr_read_ctlr(gicr_base) & GICR_CTLR_RWP_BIT) != 0U) { + } +} + +static inline void gicr_wait_for_upstream_pending_write(uintptr_t gicr_base) +{ + while ((gicr_read_ctlr(gicr_base) & GICR_CTLR_UWP_BIT) != 0U) { + } +} + +/* Private implementation of Distributor power control hooks */ +void arm_gicv3_distif_pre_save(unsigned int rdist_proc_num); +void arm_gicv3_distif_post_restore(unsigned int rdist_proc_num); + +/******************************************************************************* + * GIC Redistributor functions for accessing entire registers. + * Note: The raw register values correspond to multiple interrupt IDs and + * the number of interrupt IDs involved depends on the register accessed. + ******************************************************************************/ + +/* + * Accessors to read/write GIC Redistributor ICENABLER0 register + */ +static inline unsigned int gicr_read_icenabler0(uintptr_t base) +{ + return mmio_read_32(base + GICR_ICENABLER0); +} + +static inline void gicr_write_icenabler0(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICR_ICENABLER0, val); +} + +/* + * Accessors to read/write GIC Redistributor ICENABLER0 and ICENABLERE + * register corresponding to its number + */ +static inline unsigned int gicr_read_icenabler(uintptr_t base, + unsigned int reg_num) +{ + return mmio_read_32(base + GICR_ICENABLER + (reg_num << 2)); +} + +static inline void gicr_write_icenabler(uintptr_t base, unsigned int reg_num, + unsigned int val) +{ + mmio_write_32(base + GICR_ICENABLER + (reg_num << 2), val); +} + +/* + * Accessors to read/write GIC Redistributor ICFGR0, ICFGR1 registers + */ +static inline unsigned int gicr_read_icfgr0(uintptr_t base) +{ + return mmio_read_32(base + GICR_ICFGR0); +} + +static inline unsigned int gicr_read_icfgr1(uintptr_t base) +{ + return mmio_read_32(base + GICR_ICFGR1); +} + +static inline void gicr_write_icfgr0(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICR_ICFGR0, val); +} + +static inline void gicr_write_icfgr1(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICR_ICFGR1, val); +} + +/* + * Accessors to read/write GIC Redistributor ICFGR0, ICFGR1 and ICFGRE + * register corresponding to its number + */ +static inline unsigned int gicr_read_icfgr(uintptr_t base, unsigned int reg_num) +{ + return mmio_read_32(base + GICR_ICFGR + (reg_num << 2)); +} + +static inline void gicr_write_icfgr(uintptr_t base, unsigned int reg_num, + unsigned int val) +{ + mmio_write_32(base + GICR_ICFGR + (reg_num << 2), val); +} + +/* + * Accessor to write GIC Redistributor ICPENDR0 register + */ +static inline void gicr_write_icpendr0(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICR_ICPENDR0, val); +} + +/* + * Accessor to write GIC Redistributor ICPENDR0 and ICPENDRE + * register corresponding to its number + */ +static inline void gicr_write_icpendr(uintptr_t base, unsigned int reg_num, + unsigned int val) +{ + mmio_write_32(base + GICR_ICPENDR + (reg_num << 2), val); +} + +/* + * Accessors to read/write GIC Redistributor IGROUPR0 register + */ +static inline unsigned int gicr_read_igroupr0(uintptr_t base) +{ + return mmio_read_32(base + GICR_IGROUPR0); +} + +static inline void gicr_write_igroupr0(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICR_IGROUPR0, val); +} + +/* + * Accessors to read/write GIC Redistributor IGROUPR0 and IGROUPRE + * register corresponding to its number + */ +static inline unsigned int gicr_read_igroupr(uintptr_t base, + unsigned int reg_num) +{ + return mmio_read_32(base + GICR_IGROUPR + (reg_num << 2)); +} + +static inline void gicr_write_igroupr(uintptr_t base, unsigned int reg_num, + unsigned int val) +{ + mmio_write_32(base + GICR_IGROUPR + (reg_num << 2), val); +} + +/* + * Accessors to read/write GIC Redistributor IGRPMODR0 register + */ +static inline unsigned int gicr_read_igrpmodr0(uintptr_t base) +{ + return mmio_read_32(base + GICR_IGRPMODR0); +} + +static inline void gicr_write_igrpmodr0(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICR_IGRPMODR0, val); +} + +/* + * Accessors to read/write GIC Redistributor IGRPMODR0 and IGRPMODRE + * register corresponding to its number + */ +static inline unsigned int gicr_read_igrpmodr(uintptr_t base, + unsigned int reg_num) +{ + return mmio_read_32(base + GICR_IGRPMODR + (reg_num << 2)); +} + +static inline void gicr_write_igrpmodr(uintptr_t base, unsigned int reg_num, + unsigned int val) +{ + mmio_write_32(base + GICR_IGRPMODR + (reg_num << 2), val); +} + +/* + * Accessors to read/write the GIC Redistributor IPRIORITYR(E) register + * corresponding to its number, 4 interrupts IDs at a time. + */ +static inline unsigned int gicr_ipriorityr_read(uintptr_t base, + unsigned int reg_num) +{ + return mmio_read_32(base + GICR_IPRIORITYR + (reg_num << 2)); +} + +static inline void gicr_ipriorityr_write(uintptr_t base, unsigned int reg_num, + unsigned int val) +{ + mmio_write_32(base + GICR_IPRIORITYR + (reg_num << 2), val); +} + +/* + * Accessors to read/write GIC Redistributor ISACTIVER0 register + */ +static inline unsigned int gicr_read_isactiver0(uintptr_t base) +{ + return mmio_read_32(base + GICR_ISACTIVER0); +} + +static inline void gicr_write_isactiver0(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICR_ISACTIVER0, val); +} + +/* + * Accessors to read/write GIC Redistributor ISACTIVER0 and ISACTIVERE + * register corresponding to its number + */ +static inline unsigned int gicr_read_isactiver(uintptr_t base, + unsigned int reg_num) +{ + return mmio_read_32(base + GICR_ISACTIVER + (reg_num << 2)); +} + +static inline void gicr_write_isactiver(uintptr_t base, unsigned int reg_num, + unsigned int val) +{ + mmio_write_32(base + GICR_ISACTIVER + (reg_num << 2), val); +} + +/* + * Accessors to read/write GIC Redistributor ISENABLER0 register + */ +static inline unsigned int gicr_read_isenabler0(uintptr_t base) +{ + return mmio_read_32(base + GICR_ISENABLER0); +} + +static inline void gicr_write_isenabler0(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICR_ISENABLER0, val); +} + +/* + * Accessors to read/write GIC Redistributor ISENABLER0 and ISENABLERE + * register corresponding to its number + */ +static inline unsigned int gicr_read_isenabler(uintptr_t base, + unsigned int reg_num) +{ + return mmio_read_32(base + GICR_ISENABLER + (reg_num << 2)); +} + +static inline void gicr_write_isenabler(uintptr_t base, unsigned int reg_num, + unsigned int val) +{ + mmio_write_32(base + GICR_ISENABLER + (reg_num << 2), val); +} + +/* + * Accessors to read/write GIC Redistributor ISPENDR0 register + */ +static inline unsigned int gicr_read_ispendr0(uintptr_t base) +{ + return mmio_read_32(base + GICR_ISPENDR0); +} + +static inline void gicr_write_ispendr0(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICR_ISPENDR0, val); +} + +/* + * Accessors to read/write GIC Redistributor ISPENDR0 and ISPENDRE + * register corresponding to its number + */ +static inline unsigned int gicr_read_ispendr(uintptr_t base, + unsigned int reg_num) +{ + return mmio_read_32(base + GICR_ISPENDR + (reg_num << 2)); +} + +static inline void gicr_write_ispendr(uintptr_t base, unsigned int reg_num, + unsigned int val) +{ + mmio_write_32(base + GICR_ISPENDR + (reg_num << 2), val); +} + +/* + * Accessors to read/write GIC Redistributor NSACR register + */ +static inline unsigned int gicr_read_nsacr(uintptr_t base) +{ + return mmio_read_32(base + GICR_NSACR); +} + +static inline void gicr_write_nsacr(uintptr_t base, unsigned int val) +{ + mmio_write_32(base + GICR_NSACR, val); +} + +/* + * Accessors to read/write GIC Redistributor PROPBASER register + */ +static inline uint64_t gicr_read_propbaser(uintptr_t base) +{ + return mmio_read_64(base + GICR_PROPBASER); +} + +static inline void gicr_write_propbaser(uintptr_t base, uint64_t val) +{ + mmio_write_64(base + GICR_PROPBASER, val); +} + +/* + * Accessors to read/write GIC Redistributor PENDBASER register + */ +static inline uint64_t gicr_read_pendbaser(uintptr_t base) +{ + return mmio_read_64(base + GICR_PENDBASER); +} + +static inline void gicr_write_pendbaser(uintptr_t base, uint64_t val) +{ + mmio_write_64(base + GICR_PENDBASER, val); +} + +/******************************************************************************* + * GIC ITS functions to read and write entire ITS registers. + ******************************************************************************/ +static inline uint32_t gits_read_ctlr(uintptr_t base) +{ + return mmio_read_32(base + GITS_CTLR); +} + +static inline void gits_write_ctlr(uintptr_t base, uint32_t val) +{ + mmio_write_32(base + GITS_CTLR, val); +} + +static inline uint64_t gits_read_cbaser(uintptr_t base) +{ + return mmio_read_64(base + GITS_CBASER); +} + +static inline void gits_write_cbaser(uintptr_t base, uint64_t val) +{ + mmio_write_64(base + GITS_CBASER, val); +} + +static inline uint64_t gits_read_cwriter(uintptr_t base) +{ + return mmio_read_64(base + GITS_CWRITER); +} + +static inline void gits_write_cwriter(uintptr_t base, uint64_t val) +{ + mmio_write_64(base + GITS_CWRITER, val); +} + +static inline uint64_t gits_read_baser(uintptr_t base, + unsigned int its_table_id) +{ + assert(its_table_id < 8U); + return mmio_read_64(base + GITS_BASER + (8U * its_table_id)); +} + +static inline void gits_write_baser(uintptr_t base, unsigned int its_table_id, + uint64_t val) +{ + assert(its_table_id < 8U); + mmio_write_64(base + GITS_BASER + (8U * its_table_id), val); +} + +/* + * Wait for Quiescent bit when GIC ITS is disabled + */ +static inline void gits_wait_for_quiescent_bit(uintptr_t gits_base) +{ + assert((gits_read_ctlr(gits_base) & GITS_CTLR_ENABLED_BIT) == 0U); + while ((gits_read_ctlr(gits_base) & GITS_CTLR_QUIESCENT_BIT) == 0U) { + } +} + +#endif /* GICV3_PRIVATE_H */ |