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/armreg.h> 8 #include <machine/frame.h> 9 10 void cpu_halt(void); 11 void swi_vm(void *); 12 13 #ifdef _KERNEL 14 #include <machine/cpu-v6.h> 15 16 static __inline uint64_t 17 get_cyclecount(void) 18 { 19 #if __ARM_ARCH > 6 || (__ARM_ARCH == 6 && defined(CPU_ARM1176)) 20 #if (__ARM_ARCH > 6) && defined(DEV_PMU) 21 if (pmu_attched) { 22 u_int cpu; 23 uint64_t h, h2; 24 uint32_t l, r; 25 26 cpu = PCPU_GET(cpuid); 27 h = (uint64_t)atomic_load_acq_32(&ccnt_hi[cpu]); 28 l = cp15_pmccntr_get(); 29 /* In case interrupts are disabled we need to check for overflow. */ 30 r = cp15_pmovsr_get(); 31 if (r & PMU_OVSR_C) { 32 atomic_add_32(&ccnt_hi[cpu], 1); 33 /* Clear the event. */ 34 cp15_pmovsr_set(PMU_OVSR_C); 35 } 36 /* Make sure there was no wrap-around while we read the lo half. */ 37 h2 = (uint64_t)atomic_load_acq_32(&ccnt_hi[cpu]); 38 if (h != h2) 39 l = cp15_pmccntr_get(); 40 return (h2 << 32 | l); 41 } else 42 #endif 43 return cp15_pmccntr_get(); 44 #else /* No performance counters, so use binuptime(9). This is slooooow */ 45 struct bintime bt; 46 47 binuptime(&bt); 48 return ((uint64_t)bt.sec << 56 | bt.frac >> 8); 49 #endif 50 } 51 #endif 52 53 #define TRAPF_USERMODE(frame) ((frame->tf_spsr & PSR_MODE) == PSR_USR32_MODE) 54 55 #define TRAPF_PC(tfp) ((tfp)->tf_pc) 56 57 #define cpu_getstack(td) ((td)->td_frame->tf_usr_sp) 58 #define cpu_setstack(td, sp) ((td)->td_frame->tf_usr_sp = (sp)) 59 #define cpu_spinwait() /* nothing */ 60 #define cpu_lock_delay() DELAY(1) 61 62 #define ARM_NVEC 8 63 #define ARM_VEC_ALL 0xffffffff 64 65 extern vm_offset_t vector_page; 66 67 /* 68 * Params passed into initarm. If you change the size of this you will 69 * need to update locore.S to allocate more memory on the stack before 70 * it calls initarm. 71 */ 72 struct arm_boot_params { 73 register_t abp_size; /* Size of this structure */ 74 register_t abp_r0; /* r0 from the boot loader */ 75 register_t abp_r1; /* r1 from the boot loader */ 76 register_t abp_r2; /* r2 from the boot loader */ 77 register_t abp_r3; /* r3 from the boot loader */ 78 vm_offset_t abp_physaddr; /* The kernel physical address */ 79 vm_offset_t abp_pagetable; /* The early page table */ 80 }; 81 82 void arm_vector_init(vm_offset_t, int); 83 void fork_trampoline(void); 84 void identify_arm_cpu(void); 85 void *initarm(struct arm_boot_params *); 86 87 extern char btext[]; 88 extern char etext[]; 89 int badaddr_read(void *, size_t, void *); 90 #endif /* !MACHINE_CPU_H */ 91