From 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:13:47 +0200 Subject: Adding upstream version 2.8.0+dfsg. Signed-off-by: Daniel Baumann --- drivers/arm/gic/v3/gicdv3_helpers.c | 244 ++++++++++++++++++++++++++++++++++++ 1 file changed, 244 insertions(+) create mode 100644 drivers/arm/gic/v3/gicdv3_helpers.c (limited to 'drivers/arm/gic/v3/gicdv3_helpers.c') 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 + +#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); +} -- cgit v1.2.3