1 /* $OpenBSD: cpu.h,v 1.93 2020/06/14 20:29:13 naddy Exp $ */ 2 3 /* 4 * Copyright (c) 2000-2004 Michael Shalayeff 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT, 20 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 25 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 26 * THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 /* 29 * Copyright (c) 1988-1994, The University of Utah and 30 * the Computer Systems Laboratory at the University of Utah (CSL). 31 * All rights reserved. 32 * 33 * Permission to use, copy, modify and distribute this software is hereby 34 * granted provided that (1) source code retains these copyright, permission, 35 * and disclaimer notices, and (2) redistributions including binaries 36 * reproduce the notices in supporting documentation, and (3) all advertising 37 * materials mentioning features or use of this software display the following 38 * acknowledgement: ``This product includes software developed by the 39 * Computer Systems Laboratory at the University of Utah.'' 40 * 41 * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS 42 * IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF 43 * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 44 * 45 * CSL requests users of this software to return to csl-dist@cs.utah.edu any 46 * improvements that they make and grant CSL redistribution rights. 47 * 48 * Utah $Hdr: cpu.h 1.19 94/12/16$ 49 */ 50 51 #ifndef _MACHINE_CPU_H_ 52 #define _MACHINE_CPU_H_ 53 54 #ifdef _KERNEL 55 #include <machine/trap.h> 56 #include <machine/frame.h> 57 #include <machine/reg.h> 58 #endif /* _KERNEL */ 59 60 /* 61 * CPU types and features 62 */ 63 #define HPPA_FTRS_TLBU 0x00000001 64 #define HPPA_FTRS_BTLBU 0x00000002 65 #define HPPA_FTRS_HVT 0x00000004 66 #define HPPA_FTRS_W32B 0x00000008 67 68 #ifndef _LOCORE 69 #ifdef _KERNEL 70 #include <sys/device.h> 71 #include <sys/queue.h> 72 #include <sys/sched.h> 73 #include <sys/srp.h> 74 75 #include <machine/mutex.h> 76 77 /* 78 * Note that the alignment of ci_trap_save is important since we want to keep 79 * it within a single cache line. As a result, it must be kept as the first 80 * entry within the cpu_info struct. 81 */ 82 struct cpu_info { 83 register_t ci_trap_save[16]; 84 85 struct device *ci_dev; 86 int ci_cpuid; 87 hppa_hpa_t ci_hpa; 88 volatile int ci_flags; 89 90 struct proc *ci_curproc; 91 paddr_t ci_fpu_state; /* Process FPU state. */ 92 paddr_t ci_stack; 93 94 #if defined(MULTIPROCESSOR) 95 struct srp_hazard ci_srp_hazards[SRP_HAZARD_NUM]; 96 #endif 97 98 register_t ci_psw; /* Processor Status Word. */ 99 volatile int ci_cpl; 100 volatile u_long ci_mask; /* Hardware interrupt mask. */ 101 volatile u_long ci_ipending; 102 volatile int ci_in_intr; 103 int ci_want_resched; 104 u_long ci_itmr; 105 106 volatile u_long ci_ipi; /* IPIs pending. */ 107 struct mutex ci_ipi_mtx; 108 109 struct schedstate_percpu ci_schedstate; 110 u_int32_t ci_randseed; 111 #ifdef DIAGNOSTIC 112 int ci_mutex_level; 113 #endif 114 #ifdef GPROF 115 struct gmonparam *ci_gmon; 116 #endif 117 } __attribute__((__aligned__(64))); 118 119 #define CPUF_RUNNING 0x0001 /* CPU is running. */ 120 121 #ifdef MULTIPROCESSOR 122 #define HPPA_MAXCPUS 4 123 #else 124 #define HPPA_MAXCPUS 1 125 #endif 126 127 extern struct cpu_info cpu_info[HPPA_MAXCPUS]; 128 129 #define MAXCPUS HPPA_MAXCPUS 130 131 static __inline struct cpu_info * 132 curcpu(void) 133 { 134 struct cpu_info *ci; 135 136 asm volatile ("mfctl %%cr29, %0" : "=r"(ci)); 137 138 return ci; 139 } 140 141 #define cpu_number() (curcpu()->ci_cpuid) 142 143 #define CPU_INFO_UNIT(ci) ((ci)->ci_dev ? (ci)->ci_dev->dv_unit : 0) 144 #define CPU_IS_PRIMARY(ci) ((ci)->ci_cpuid == 0) 145 #define CPU_INFO_ITERATOR int 146 #define CPU_INFO_FOREACH(cii, ci) \ 147 for (cii = 0, ci = &cpu_info[0]; cii < ncpus; cii++, ci++) 148 149 #define CPU_BUSY_CYCLE() do {} while (0) 150 151 /* types */ 152 enum hppa_cpu_type { 153 hpcxs, hpcxt, hpcxta, hpcxl, hpcxl2, hpcxu, hpcxu2, hpcxw 154 }; 155 extern enum hppa_cpu_type cpu_type; 156 extern const char *cpu_typename; 157 extern int cpu_hvers; 158 #endif 159 #endif 160 161 /* 162 * COPR/SFUs 163 */ 164 #define HPPA_FPUS 0xc0 165 #define HPPA_FPUVER(w) (((w) & 0x003ff800) >> 11) 166 #define HPPA_FPU_OP(w) ((w) >> 26) 167 #define HPPA_FPU_UNMPL 0x01 /* exception reg, the rest is << 1 */ 168 #define HPPA_FPU_ILL 0x80 /* software-only */ 169 #define HPPA_FPU_I 0x01 170 #define HPPA_FPU_U 0x02 171 #define HPPA_FPU_O 0x04 172 #define HPPA_FPU_Z 0x08 173 #define HPPA_FPU_V 0x10 174 #define HPPA_FPU_D 0x20 175 #define HPPA_FPU_T 0x40 176 #define HPPA_FPU_XMASK 0x7f 177 #define HPPA_FPU_T_POS 25 178 #define HPPA_FPU_RM 0x00000600 179 #define HPPA_FPU_CQ 0x00fff800 180 #define HPPA_FPU_C 0x04000000 181 #define HPPA_FPU_FLSH 27 182 #define HPPA_FPU_INIT (0) 183 #define HPPA_FPU_FORK(s) ((s) & ~((u_int64_t)(HPPA_FPU_XMASK)<<32)) 184 #define HPPA_PMSFUS 0x20 /* ??? */ 185 186 /* 187 * Exported definitions unique to hp700/PA-RISC cpu support. 188 */ 189 190 #define HPPA_PGALIAS 0x00400000 191 #define HPPA_PGAMASK 0xffc00000 192 #define HPPA_PGAOFF 0x003fffff 193 194 #define HPPA_IOBEGIN 0xf0000000 195 #define HPPA_IOLEN 0x10000000 196 #define HPPA_PDC_LOW 0xef000000 197 #define HPPA_PDC_HIGH 0xf1000000 198 #define HPPA_IOBCAST 0xfffc0000 199 #define HPPA_LBCAST 0xfffc0000 200 #define HPPA_GBCAST 0xfffe0000 201 #define HPPA_FPA 0xfff80000 202 #define HPPA_FLEX_DATA 0xfff80001 203 #define HPPA_DMA_ENABLE 0x00000001 204 #define HPPA_FLEX_MASK 0xfffc0000 205 #define HPPA_FLEX_SIZE (1 + ~HPPA_FLEX_MASK) 206 #define HPPA_FLEX(a) (((a) & HPPA_FLEX_MASK) >> 18) 207 #define HPPA_SPA_ENABLE 0x00000020 208 #define HPPA_NMODSPBUS 64 209 210 #define clockframe trapframe 211 #define CLKF_PC(framep) ((framep)->tf_iioq_head) 212 #define CLKF_INTR(framep) ((framep)->tf_flags & TFF_INTR) 213 #define CLKF_USERMODE(framep) ((framep)->tf_flags & T_USER) 214 #define CLKF_SYSCALL(framep) ((framep)->tf_flags & TFF_SYS) 215 216 #define need_proftick(p) setsoftast(p) 217 #define PROC_PC(p) ((p)->p_md.md_regs->tf_iioq_head & ~HPPA_PC_PRIV_MASK) 218 #define PROC_STACK(p) ((p)->p_md.md_regs->tf_sp) 219 220 #ifndef _LOCORE 221 #ifdef _KERNEL 222 223 #define DELAY(x) delay(x) 224 225 extern int (*cpu_desidhash)(void); 226 227 void signotify(struct proc *); 228 void delay(u_int us); 229 void hppa_init(paddr_t start); 230 void trap(int type, struct trapframe *frame); 231 int spcopy(pa_space_t ssp, const void *src, 232 pa_space_t dsp, void *dst, size_t size); 233 int spcopy32(pa_space_t ssp, const uint32_t *src, 234 pa_space_t dsp, uint32_t *dst); 235 int spstrcpy(pa_space_t ssp, const void *src, 236 pa_space_t dsp, void *dst, size_t size, size_t *rsize); 237 int copy_on_fault(void); 238 void switch_trampoline(void); 239 int cpu_dumpsize(void); 240 int cpu_dump(void); 241 242 static inline unsigned int 243 cpu_rnd_messybits(void) 244 { 245 unsigned int __itmr; 246 247 __asm volatile("mfctl %1,%0": "=r" (__itmr) : "i" (CR_ITMR)); 248 249 return (__itmr); 250 } 251 252 #ifdef MULTIPROCESSOR 253 void cpu_boot_secondary_processors(void); 254 void cpu_hw_init(void); 255 void cpu_hatch(void); 256 void cpu_unidle(struct cpu_info *); 257 #else 258 #define cpu_unidle(ci) 259 #endif 260 261 extern void need_resched(struct cpu_info *); 262 #define clear_resched(ci) (ci)->ci_want_resched = 0 263 264 #endif 265 266 /* 267 * Boot arguments stuff 268 */ 269 270 #define BOOTARG_LEN PAGE_SIZE 271 #define BOOTARG_OFF 0x10000 272 273 /* 274 * CTL_MACHDEP definitions. 275 */ 276 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 277 #define CPU_FPU 2 /* int: fpu present/enabled */ 278 #define CPU_LED_BLINK 3 /* int: twiddle heartbeat LED/LCD */ 279 #define CPU_MAXID 4 /* number of valid machdep ids */ 280 281 #define CTL_MACHDEP_NAMES { \ 282 { 0, 0 }, \ 283 { "console_device", CTLTYPE_STRUCT }, \ 284 { "fpu", CTLTYPE_INT }, \ 285 { "led_blink", CTLTYPE_INT }, \ 286 } 287 288 #ifdef _KERNEL 289 #include <sys/queue.h> 290 291 #ifdef MULTIPROCESSOR 292 #include <sys/mplock.h> 293 #endif 294 295 struct blink_led { 296 void (*bl_func)(void *, int); 297 void *bl_arg; 298 SLIST_ENTRY(blink_led) bl_next; 299 }; 300 301 extern void blink_led_register(struct blink_led *); 302 #endif 303 #endif 304 305 #endif /* _MACHINE_CPU_H_ */ 306