1/* $NetBSD: alpha.h,v 1.47 2021/07/23 03:50:32 thorpej Exp $ */ 2 3/* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 37 * 38 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 39 */ 40 41#ifndef _ALPHA_H_ 42#define _ALPHA_H_ 43 44typedef union alpha_f_float { 45 uint32_t i; 46 uint32_t frac_hi: 7, 47 exp: 8, 48 sign: 1, 49 frac_lo: 16; 50} f_float; 51 52typedef union alpha_s_float { 53 uint32_t i; 54 uint32_t frac: 23, 55 exp: 8, 56 sign: 1; 57} s_float; 58 59typedef union alpha_t_float { 60 uint64_t i; 61 uint64_t frac: 52, 62 exp: 11, 63 sign: 1; 64} t_float; 65 66#ifdef _KERNEL 67 68#include <sys/bus.h> 69 70#include <sys/pcu.h> 71 72struct pcb; 73struct lwp; 74struct reg; 75struct rpb; 76struct trapframe; 77 78extern bool alpha_is_qemu; 79extern int alpha_use_cctr; 80extern u_long cpu_implver; /* from IMPLVER instruction */ 81extern u_long cpu_amask; /* from AMASK instruction */ 82extern int bootdev_debug; 83extern int alpha_fp_sync_complete; 84extern int alpha_fp_complete_debug; 85extern int alpha_unaligned_print, alpha_unaligned_fix, alpha_unaligned_sigbus; 86extern void (*alpha_delay_fn)(unsigned long); 87 88void XentArith(uint64_t, uint64_t, uint64_t); /* MAGIC */ 89void XentIF(uint64_t, uint64_t, uint64_t); /* MAGIC */ 90void XentInt(uint64_t, uint64_t, uint64_t); /* MAGIC */ 91void XentMM(uint64_t, uint64_t, uint64_t); /* MAGIC */ 92void XentRestart(void); /* MAGIC */ 93void XentSys(uint64_t, uint64_t, uint64_t); /* MAGIC */ 94void XentUna(uint64_t, uint64_t, uint64_t); /* MAGIC */ 95void alpha_init(u_long, u_long, u_long, u_long, u_long); 96void alpha_page_physload_sheltered(u_long, u_long, u_long, u_long); 97void ast(struct trapframe *); 98int badaddr(void *, size_t); 99int badaddr_read(void *, size_t, void *); 100uint64_t console_restart(struct trapframe *); 101void do_sir(void); 102void exception_return(void); /* MAGIC */ 103void alpha_kthread_backstop(void); /* MAGIC */ 104void frametoreg(const struct trapframe *, struct reg *); 105void init_bootstrap_console(void); 106void init_prom_interface(unsigned long, struct rpb *); 107void interrupt(unsigned long, unsigned long, unsigned long, 108 struct trapframe *); 109void machine_check(unsigned long, struct trapframe *, unsigned long, 110 unsigned long); 111uint64_t hwrpb_checksum(void); 112void hwrpb_restart_setup(void); 113void regdump(struct trapframe *); 114void regtoframe(const struct reg *, struct trapframe *); 115void savectx(struct pcb *); 116void trap(unsigned long, unsigned long, unsigned long, unsigned long, 117 struct trapframe *); 118void trap_init(void); 119void enable_nsio_ide(bus_space_tag_t); 120 121extern const pcu_ops_t fpu_ops; 122 123void fpu_state_load(struct lwp *, u_int); 124void fpu_state_save(struct lwp *); 125void fpu_state_release(struct lwp *); 126 127static __inline bool 128fpu_valid_p(struct lwp *l) 129{ 130 return pcu_valid_p(&fpu_ops, l); 131} 132 133static __inline void 134fpu_load(void) 135{ 136 pcu_load(&fpu_ops); 137} 138 139static __inline void 140fpu_save(lwp_t *l) 141{ 142 pcu_save(&fpu_ops, l); 143} 144 145static __inline void 146fpu_discard(lwp_t *l, bool valid_p) 147{ 148 pcu_discard(&fpu_ops, l, valid_p); 149} 150 151void alpha_patch(bool); 152 153/* Multiprocessor glue; cpu.c */ 154 155struct cpu_info; 156int cpu_iccb_send(long, const char *); 157void cpu_iccb_receive(void); 158void cpu_hatch(struct cpu_info *); 159void cpu_halt(void) __attribute__((__noreturn__)); 160void cpu_spinup_trampoline(void); /* MAGIC */ 161void cpu_pause(unsigned long); 162void cpu_resume(unsigned long); 163#if defined(DDB) 164void cpu_debug_dump(void); 165#endif 166 167/* IEEE and VAX FP completion */ 168 169void alpha_sts(int, s_float *); /* MAGIC */ 170void alpha_stt(int, t_float *); /* MAGIC */ 171void alpha_lds(int, s_float *); /* MAGIC */ 172void alpha_ldt(int, t_float *); /* MAGIC */ 173 174uint64_t alpha_read_fpcr(void); /* MAGIC */ 175void alpha_write_fpcr(uint64_t); /* MAGIC */ 176 177uint64_t alpha_read_fp_c(struct lwp *); 178void alpha_write_fp_c(struct lwp *, uint64_t); 179 180int alpha_fp_complete(u_long, u_long, struct lwp *, uint64_t *); 181int alpha_fp_complete_at(u_long, struct lwp *, uint64_t *); 182 183/* Security sensitive rate limiting printf */ 184 185void rlprintf(struct timeval *t, const char *fmt, ...); 186 187#endif /* _KERNEL */ 188#endif /* _ALPHA_H_ */ 189