1 files changed, 244 insertions, 0 deletions
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);
+}