1 /* $NetBSD: cpu.h,v 1.2 2001/02/23 21:23:52 reinoud Exp $ */ 2 /* $FreeBSD$ */ 3 4 #ifndef MACHINE_CPU_H 5 #define MACHINE_CPU_H 6 7 #include <machine/acle-compat.h> 8 #include <machine/armreg.h> 9 #include <machine/frame.h> 10 11 void cpu_halt(void); 12 void swi_vm(void *); 13 14 #ifdef _KERNEL 15 #if __ARM_ARCH >= 6 16 #include <machine/cpu-v6.h> 17 #else 18 #include <machine/cpu-v4.h> 19 #endif /* __ARM_ARCH >= 6 */ 20 21 static __inline uint64_t 22 get_cyclecount(void) 23 { 24 #if __ARM_ARCH >= 6 25 #if (__ARM_ARCH > 6) && defined(DEV_PMU) 26 if (pmu_attched) { 27 u_int cpu; 28 uint64_t h, h2; 29 uint32_t l, r; 30 31 cpu = PCPU_GET(cpuid); 32 h = (uint64_t)atomic_load_acq_32(&ccnt_hi[cpu]); 33 l = cp15_pmccntr_get(); 34 /* In case interrupts are disabled we need to check for overflow. */ 35 r = cp15_pmovsr_get(); 36 if (r & PMU_OVSR_C) { 37 atomic_add_32(&ccnt_hi[cpu], 1); 38 /* Clear the event. */ 39 cp15_pmovsr_set(PMU_OVSR_C); 40 } 41 /* Make sure there was no wrap-around while we read the lo half. */ 42 h2 = (uint64_t)atomic_load_acq_32(&ccnt_hi[cpu]); 43 if (h != h2) 44 l = cp15_pmccntr_get(); 45 return (h2 << 32 | l); 46 } else 47 #endif 48 return cp15_pmccntr_get(); 49 #else /* No performance counters, so use binuptime(9). This is slooooow */ 50 struct bintime bt; 51 52 binuptime(&bt); 53 return ((uint64_t)bt.sec << 56 | bt.frac >> 8); 54 #endif 55 } 56 #endif 57 58 #define TRAPF_USERMODE(frame) ((frame->tf_spsr & PSR_MODE) == PSR_USR32_MODE) 59 60 #define TRAPF_PC(tfp) ((tfp)->tf_pc) 61 62 #define cpu_getstack(td) ((td)->td_frame->tf_usr_sp) 63 #define cpu_setstack(td, sp) ((td)->td_frame->tf_usr_sp = (sp)) 64 #define cpu_spinwait() /* nothing */ 65 66 #define ARM_NVEC 8 67 #define ARM_VEC_ALL 0xffffffff 68 69 extern vm_offset_t vector_page; 70 71 /* 72 * Params passed into initarm. If you change the size of this you will 73 * need to update locore.S to allocate more memory on the stack before 74 * it calls initarm. 75 */ 76 struct arm_boot_params { 77 register_t abp_size; /* Size of this structure */ 78 register_t abp_r0; /* r0 from the boot loader */ 79 register_t abp_r1; /* r1 from the boot loader */ 80 register_t abp_r2; /* r2 from the boot loader */ 81 register_t abp_r3; /* r3 from the boot loader */ 82 vm_offset_t abp_physaddr; /* The kernel physical address */ 83 vm_offset_t abp_pagetable; /* The early page table */ 84 }; 85 86 void arm_vector_init(vm_offset_t, int); 87 void fork_trampoline(void); 88 void identify_arm_cpu(void); 89 void *initarm(struct arm_boot_params *); 90 91 extern char btext[]; 92 extern char etext[]; 93 int badaddr_read(void *, size_t, void *); 94 #endif /* !MACHINE_CPU_H */ 95