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This patch adds a driver for ARM GICv2 systems, example GIC-400. Unlike the existing GIC driver in `include/drivers/arm/arm_gic.h`, this driver is optimised for GICv2 and does not support GICv3 systems in GICv2 compatibility mode. The driver interface has been implemented in `drivers/arm/gic/v2/gicv2_main.c`. The corresponding header is in `include/drivers/arm/gicv2.h`. Helper functions are implemented in `drivers/arm/gic/v2/gicv2_helpers.c` and are accessible through the `drivers/arm/gic/v2/gicv2_private.h` header. Change-Id: I09fffa4e621fb99ba3c01204839894816cd89a2a
147 lines
4.6 KiB
C
147 lines
4.6 KiB
C
/*
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* Copyright (c) 2015, ARM Limited and Contributors. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* Neither the name of ARM nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __GICV2_PRIVATE_H__
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#define __GICV2_PRIVATE_H__
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#include <gicv2.h>
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#include <mmio.h>
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#include <stdint.h>
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/*******************************************************************************
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* Private function prototypes
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******************************************************************************/
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void gicv2_spis_configure_defaults(uintptr_t gicd_base);
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void gicv2_secure_spis_configure(uintptr_t gicd_base,
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unsigned int num_ints,
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const unsigned int *sec_intr_list);
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void gicv2_secure_ppi_sgi_setup(uintptr_t gicd_base,
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unsigned int num_ints,
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const unsigned int *sec_intr_list);
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unsigned int gicv2_get_cpuif_id(uintptr_t base);
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/*******************************************************************************
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* GIC Distributor interface accessors for reading entire registers
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******************************************************************************/
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static inline unsigned int gicd_read_pidr2(uintptr_t base)
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{
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return mmio_read_32(base + GICD_PIDR2_GICV2);
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}
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/*******************************************************************************
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* GIC CPU interface accessors for reading entire registers
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******************************************************************************/
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static inline unsigned int gicc_read_ctlr(uintptr_t base)
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{
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return mmio_read_32(base + GICC_CTLR);
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}
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static inline unsigned int gicc_read_pmr(uintptr_t base)
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{
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return mmio_read_32(base + GICC_PMR);
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}
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static inline unsigned int gicc_read_BPR(uintptr_t base)
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{
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return mmio_read_32(base + GICC_BPR);
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}
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static inline unsigned int gicc_read_IAR(uintptr_t base)
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{
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return mmio_read_32(base + GICC_IAR);
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}
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static inline unsigned int gicc_read_EOIR(uintptr_t base)
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{
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return mmio_read_32(base + GICC_EOIR);
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}
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static inline unsigned int gicc_read_hppir(uintptr_t base)
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{
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return mmio_read_32(base + GICC_HPPIR);
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}
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static inline unsigned int gicc_read_ahppir(uintptr_t base)
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{
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return mmio_read_32(base + GICC_AHPPIR);
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}
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static inline unsigned int gicc_read_dir(uintptr_t base)
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{
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return mmio_read_32(base + GICC_DIR);
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}
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static inline unsigned int gicc_read_iidr(uintptr_t base)
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{
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return mmio_read_32(base + GICC_IIDR);
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}
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/*******************************************************************************
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* GIC CPU interface accessors for writing entire registers
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******************************************************************************/
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static inline void gicc_write_ctlr(uintptr_t base, unsigned int val)
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{
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mmio_write_32(base + GICC_CTLR, val);
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}
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static inline void gicc_write_pmr(uintptr_t base, unsigned int val)
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{
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mmio_write_32(base + GICC_PMR, val);
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}
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static inline void gicc_write_BPR(uintptr_t base, unsigned int val)
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{
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mmio_write_32(base + GICC_BPR, val);
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}
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static inline void gicc_write_IAR(uintptr_t base, unsigned int val)
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{
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mmio_write_32(base + GICC_IAR, val);
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}
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static inline void gicc_write_EOIR(uintptr_t base, unsigned int val)
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{
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mmio_write_32(base + GICC_EOIR, val);
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}
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static inline void gicc_write_hppir(uintptr_t base, unsigned int val)
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{
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mmio_write_32(base + GICC_HPPIR, val);
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}
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static inline void gicc_write_dir(uintptr_t base, unsigned int val)
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{
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mmio_write_32(base + GICC_DIR, val);
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}
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#endif /* __GICV2_PRIVATE_H__ */
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