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 #ifdef DEV_PMU 18 #include <sys/pcpu.h> 19 #define PMU_OVSR_C 0x80000000 /* Cycle Counter */ 20 extern uint32_t ccnt_hi[MAXCPU]; 21 extern int pmu_attched; 22 #endif /* DEV_PMU */ 23 #endif /* __ARM_ARCH >= 6 */ 24 25 static __inline uint64_t 26 get_cyclecount(void) 27 { 28 #if __ARM_ARCH >= 6 29 #if (__ARM_ARCH > 6) && defined(DEV_PMU) 30 if (pmu_attched) { 31 u_int cpu; 32 uint64_t h, h2; 33 uint32_t l, r; 34 35 cpu = PCPU_GET(cpuid); 36 h = (uint64_t)atomic_load_acq_32(&ccnt_hi[cpu]); 37 l = cp15_pmccntr_get(); 38 /* In case interrupts are disabled we need to check for overflow. */ 39 r = cp15_pmovsr_get(); 40 if (r & PMU_OVSR_C) { 41 atomic_add_32(&ccnt_hi[cpu], 1); 42 /* Clear the event. */ 43 cp15_pmovsr_set(PMU_OVSR_C); 44 } 45 /* Make sure there was no wrap-around while we read the lo half. */ 46 h2 = (uint64_t)atomic_load_acq_32(&ccnt_hi[cpu]); 47 if (h != h2) 48 l = cp15_pmccntr_get(); 49 return (h2 << 32 | l); 50 } else 51 #endif 52 return cp15_pmccntr_get(); 53 #else /* No performance counters, so use binuptime(9). This is slooooow */ 54 struct bintime bt; 55 56 binuptime(&bt); 57 return ((uint64_t)bt.sec << 56 | bt.frac >> 8); 58 #endif 59 } 60 #endif 61 62 #define TRAPF_USERMODE(frame) ((frame->tf_spsr & PSR_MODE) == PSR_USR32_MODE) 63 64 #define TRAPF_PC(tfp) ((tfp)->tf_pc) 65 66 #define cpu_getstack(td) ((td)->td_frame->tf_usr_sp) 67 #define cpu_setstack(td, sp) ((td)->td_frame->tf_usr_sp = (sp)) 68 #define cpu_spinwait() /* nothing */ 69 70 #define ARM_NVEC 8 71 #define ARM_VEC_ALL 0xffffffff 72 73 extern vm_offset_t vector_page; 74 75 /* 76 * Params passed into initarm. If you change the size of this you will 77 * need to update locore.S to allocate more memory on the stack before 78 * it calls initarm. 79 */ 80 struct arm_boot_params { 81 register_t abp_size; /* Size of this structure */ 82 register_t abp_r0; /* r0 from the boot loader */ 83 register_t abp_r1; /* r1 from the boot loader */ 84 register_t abp_r2; /* r2 from the boot loader */ 85 register_t abp_r3; /* r3 from the boot loader */ 86 vm_offset_t abp_physaddr; /* The kernel physical address */ 87 vm_offset_t abp_pagetable; /* The early page table */ 88 }; 89 90 void arm_vector_init(vm_offset_t, int); 91 void fork_trampoline(void); 92 void identify_arm_cpu(void); 93 void *initarm(struct arm_boot_params *); 94 95 extern char btext[]; 96 extern char etext[]; 97 int badaddr_read(void *, size_t, void *); 98 #endif /* !MACHINE_CPU_H */ 99