/* * Copyright (c) 2015-2016, ARM Limited and Contributors. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of ARM nor the names of its contributors may be used * to endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #ifndef __GIC_COMMON_H__ #define __GIC_COMMON_H__ /******************************************************************************* * GIC Distributor interface general definitions ******************************************************************************/ /* Constants to categorise interrupts */ #define MIN_SGI_ID 0 #define MIN_PPI_ID 16 #define MIN_SPI_ID 32 /* Mask for the priority field common to all GIC interfaces */ #define GIC_PRI_MASK 0xff /* Constant to indicate a spurious interrupt in all GIC versions */ #define GIC_SPURIOUS_INTERRUPT 1023 /* Constants to categorise priorities */ #define GIC_HIGHEST_SEC_PRIORITY 0 #define GIC_LOWEST_SEC_PRIORITY 127 #define GIC_HIGHEST_NS_PRIORITY 128 #define GIC_LOWEST_NS_PRIORITY 254 /* 255 would disable an interrupt */ /******************************************************************************* * GIC Distributor interface register offsets that are common to GICv3 & GICv2 ******************************************************************************/ #define GICD_CTLR 0x0 #define GICD_TYPER 0x4 #define GICD_IIDR 0x8 #define GICD_IGROUPR 0x80 #define GICD_ISENABLER 0x100 #define GICD_ICENABLER 0x180 #define GICD_ISPENDR 0x200 #define GICD_ICPENDR 0x280 #define GICD_ISACTIVER 0x300 #define GICD_ICACTIVER 0x380 #define GICD_IPRIORITYR 0x400 #define GICD_ICFGR 0xc00 #define GICD_NSACR 0xe00 /* GICD_CTLR bit definitions */ #define CTLR_ENABLE_G0_SHIFT 0 #define CTLR_ENABLE_G0_MASK 0x1 #define CTLR_ENABLE_G0_BIT (1 << CTLR_ENABLE_G0_SHIFT) /******************************************************************************* * GIC Distributor interface register constants that are common to GICv3 & GICv2 ******************************************************************************/ #define PIDR2_ARCH_REV_SHIFT 4 #define PIDR2_ARCH_REV_MASK 0xf /* GICv3 revision as reported by the PIDR2 register */ #define ARCH_REV_GICV3 0x3 /* GICv2 revision as reported by the PIDR2 register */ #define ARCH_REV_GICV2 0x2 #define IGROUPR_SHIFT 5 #define ISENABLER_SHIFT 5 #define ICENABLER_SHIFT ISENABLER_SHIFT #define ISPENDR_SHIFT 5 #define ICPENDR_SHIFT ISPENDR_SHIFT #define ISACTIVER_SHIFT 5 #define ICACTIVER_SHIFT ISACTIVER_SHIFT #define IPRIORITYR_SHIFT 2 #define ICFGR_SHIFT 4 #define NSACR_SHIFT 4 /* GICD_TYPER shifts and masks */ #define TYPER_IT_LINES_NO_SHIFT 0 #define TYPER_IT_LINES_NO_MASK 0x1f /* Value used to initialize Normal world interrupt priorities four at a time */ #define GICD_IPRIORITYR_DEF_VAL \ (GIC_HIGHEST_NS_PRIORITY | \ (GIC_HIGHEST_NS_PRIORITY << 8) | \ (GIC_HIGHEST_NS_PRIORITY << 16) | \ (GIC_HIGHEST_NS_PRIORITY << 24)) #ifndef __ASSEMBLY__ #include #include /******************************************************************************* * 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 ******************************************************************************/ 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); 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); 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); 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); #endif /* __ASSEMBLY__ */ #endif /* __GIC_COMMON_H__ */