17ee966e9SAndrew Jones #ifndef _ASMARM64_PROCESSOR_H_ 27ee966e9SAndrew Jones #define _ASMARM64_PROCESSOR_H_ 37ee966e9SAndrew Jones /* 47ee966e9SAndrew Jones * Copyright (C) 2014, Red Hat Inc, Andrew Jones <drjones@redhat.com> 57ee966e9SAndrew Jones * 67ee966e9SAndrew Jones * This work is licensed under the terms of the GNU LGPL, version 2. 77ee966e9SAndrew Jones */ 8db328a24SAndrew Jones 9db328a24SAndrew Jones /* System Control Register (SCTLR_EL1) bits */ 10db328a24SAndrew Jones #define SCTLR_EL1_EE (1 << 25) 11db328a24SAndrew Jones #define SCTLR_EL1_WXN (1 << 19) 12db328a24SAndrew Jones #define SCTLR_EL1_I (1 << 12) 13db328a24SAndrew Jones #define SCTLR_EL1_SA0 (1 << 4) 14db328a24SAndrew Jones #define SCTLR_EL1_SA (1 << 3) 15db328a24SAndrew Jones #define SCTLR_EL1_C (1 << 2) 16db328a24SAndrew Jones #define SCTLR_EL1_A (1 << 1) 17db328a24SAndrew Jones #define SCTLR_EL1_M (1 << 0) 18db328a24SAndrew Jones 19db328a24SAndrew Jones #ifndef __ASSEMBLY__ 207ee966e9SAndrew Jones #include <asm/ptrace.h> 21957b6055SAndrew Jones #include <asm/esr.h> 2292fca209SWei Huang #include <asm/sysreg.h> 237ee966e9SAndrew Jones 247ee966e9SAndrew Jones enum vector { 257ee966e9SAndrew Jones EL1T_SYNC, 267ee966e9SAndrew Jones EL1T_IRQ, 277ee966e9SAndrew Jones EL1T_FIQ, 287ee966e9SAndrew Jones EL1T_ERROR, 297ee966e9SAndrew Jones EL1H_SYNC, 307ee966e9SAndrew Jones EL1H_IRQ, 317ee966e9SAndrew Jones EL1H_FIQ, 327ee966e9SAndrew Jones EL1H_ERROR, 337ee966e9SAndrew Jones EL0_SYNC_64, 347ee966e9SAndrew Jones EL0_IRQ_64, 357ee966e9SAndrew Jones EL0_FIQ_64, 367ee966e9SAndrew Jones EL0_ERROR_64, 377ee966e9SAndrew Jones EL0_SYNC_32, 387ee966e9SAndrew Jones EL0_IRQ_32, 397ee966e9SAndrew Jones EL0_FIQ_32, 407ee966e9SAndrew Jones EL0_ERROR_32, 417ee966e9SAndrew Jones VECTOR_MAX, 427ee966e9SAndrew Jones }; 437ee966e9SAndrew Jones 447ee966e9SAndrew Jones #define EC_MAX 64 457ee966e9SAndrew Jones 467ee966e9SAndrew Jones typedef void (*vector_fn)(enum vector v, struct pt_regs *regs, 477ee966e9SAndrew Jones unsigned int esr); 487ee966e9SAndrew Jones typedef void (*exception_fn)(struct pt_regs *regs, unsigned int esr); 499ae19a63SAndrew Jones typedef void (*irq_handler_fn)(struct pt_regs *regs); 507ee966e9SAndrew Jones extern void install_vector_handler(enum vector v, vector_fn fn); 517ee966e9SAndrew Jones extern void install_exception_handler(enum vector v, unsigned int ec, 527ee966e9SAndrew Jones exception_fn fn); 539ae19a63SAndrew Jones extern void install_irq_handler(enum vector v, irq_handler_fn fn); 549ae19a63SAndrew Jones extern void default_vector_sync_handler(enum vector v, struct pt_regs *regs, 559ae19a63SAndrew Jones unsigned int esr); 569ae19a63SAndrew Jones extern void default_vector_irq_handler(enum vector v, struct pt_regs *regs, 57a4049322SAndrew Jones unsigned int esr); 58ad14f089SAndrew Jones extern void vector_handlers_default_init(vector_fn *handlers); 597ee966e9SAndrew Jones 607ee966e9SAndrew Jones extern void show_regs(struct pt_regs *regs); 61db328a24SAndrew Jones extern bool get_far(unsigned int esr, unsigned long *far); 627ee966e9SAndrew Jones 637ee966e9SAndrew Jones static inline unsigned long current_level(void) 647ee966e9SAndrew Jones { 657ee966e9SAndrew Jones unsigned long el; 667ee966e9SAndrew Jones asm volatile("mrs %0, CurrentEL" : "=r" (el)); 677ee966e9SAndrew Jones return el & 0xc; 687ee966e9SAndrew Jones } 697ee966e9SAndrew Jones 7092fca209SWei Huang static inline unsigned int get_mpidr(void) 7192fca209SWei Huang { 7292fca209SWei Huang return read_sysreg(mpidr_el1); 73f6d10793SAndrew Jones } 74f6d10793SAndrew Jones 75*d9729025SAndrew Jones #define MPIDR_HWID_BITMASK 0xff00ffffff 76*d9729025SAndrew Jones extern int mpidr_to_cpu(uint64_t mpidr); 77*d9729025SAndrew Jones 78*d9729025SAndrew Jones #define MPIDR_LEVEL_SHIFT(level) \ 79*d9729025SAndrew Jones (((1 << level) >> 1) << 3) 80*d9729025SAndrew Jones #define MPIDR_AFFINITY_LEVEL(mpidr, level) \ 81*d9729025SAndrew Jones ((mpidr >> MPIDR_LEVEL_SHIFT(level)) & 0xff) 82f6d10793SAndrew Jones 837ee966e9SAndrew Jones extern void start_usr(void (*func)(void *arg), void *arg, unsigned long sp_usr); 84f6d10793SAndrew Jones extern bool is_user(void); 857ee966e9SAndrew Jones 86db328a24SAndrew Jones #endif /* !__ASSEMBLY__ */ 877ee966e9SAndrew Jones #endif /* _ASMARM64_PROCESSOR_H_ */ 88