1 /* $NetBSD: cpu.h,v 1.135 2023/07/23 07:20:45 skrll Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell and Rick Macklem. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)cpu.h 8.4 (Berkeley) 1/4/94 35 */ 36 37 #ifndef _CPU_H_ 38 #define _CPU_H_ 39 40 /* 41 * Exported definitions unique to NetBSD/mips cpu support. 42 */ 43 44 #ifdef _LOCORE 45 #error Use assym.h to get definitions from <mips/cpu.h> 46 #endif 47 48 #if defined(_KERNEL) || defined(_KMEMUSER) 49 50 #if defined(_KERNEL_OPT) 51 #include "opt_cputype.h" 52 #include "opt_gprof.h" 53 #include "opt_lockdebug.h" 54 #include "opt_multiprocessor.h" 55 #endif 56 57 #include <mips/frame.h> 58 59 #include <sys/cpu_data.h> 60 #include <sys/device_if.h> 61 #include <sys/evcnt.h> 62 #include <sys/kcpuset.h> 63 #include <sys/intr.h> 64 65 typedef struct cpu_watchpoint { 66 register_t cw_addr; 67 register_t cw_mask; 68 uint32_t cw_asid; 69 uint32_t cw_mode; 70 } cpu_watchpoint_t; 71 72 /* (abstract) mode bits */ 73 #define CPUWATCH_WRITE __BIT(0) 74 #define CPUWATCH_READ __BIT(1) 75 #define CPUWATCH_EXEC __BIT(2) 76 #define CPUWATCH_MASK __BIT(3) 77 #define CPUWATCH_ASID __BIT(4) 78 #define CPUWATCH_RWX (CPUWATCH_EXEC|CPUWATCH_READ|CPUWATCH_WRITE) 79 80 #define CPUWATCH_MAX 8 /* max possible number of watchpoints */ 81 82 u_int cpuwatch_discover(void); 83 void cpuwatch_free(cpu_watchpoint_t *); 84 cpu_watchpoint_t *cpuwatch_alloc(void); 85 void cpuwatch_set_all(void); 86 void cpuwatch_clr_all(void); 87 void cpuwatch_set(cpu_watchpoint_t *); 88 void cpuwatch_clr(cpu_watchpoint_t *); 89 90 struct cpu_info { 91 struct cpu_data ci_data; /* MI per-cpu data */ 92 void *ci_nmi_stack; /* NMI exception stack */ 93 struct cpu_softc *ci_softc; /* chip-dependent hook */ 94 device_t ci_dev; /* owning device */ 95 cpuid_t ci_cpuid; /* Machine-level identifier */ 96 u_long ci_cctr_freq; /* cycle counter frequency */ 97 u_long ci_cpu_freq; /* CPU frequency */ 98 u_long ci_cycles_per_hz; /* CPU freq / hz */ 99 u_long ci_divisor_delay; /* for delay/DELAY */ 100 u_long ci_divisor_recip; /* unused, for obsolete microtime(9) */ 101 struct lwp *ci_curlwp; /* currently running lwp */ 102 struct lwp *ci_onproc; /* current user LWP / kthread */ 103 volatile int ci_want_resched; /* user preemption pending */ 104 int ci_mtx_count; /* negative count of held mutexes */ 105 int ci_mtx_oldspl; /* saved SPL value */ 106 int ci_idepth; /* hardware interrupt depth */ 107 int ci_cpl; /* current [interrupt] priority level */ 108 uint32_t ci_next_cp0_clk_intr; /* for hard clock intr scheduling */ 109 struct evcnt ci_ev_count_compare; /* hard clock intr counter */ 110 struct evcnt ci_ev_count_compare_missed; /* hard clock miss counter */ 111 struct lwp *ci_softlwps[SOFTINT_COUNT]; 112 volatile u_int ci_softints; 113 struct evcnt ci_ev_fpu_loads; /* fpu load counter */ 114 struct evcnt ci_ev_fpu_saves; /* fpu save counter */ 115 struct evcnt ci_ev_dsp_loads; /* dsp load counter */ 116 struct evcnt ci_ev_dsp_saves; /* dsp save counter */ 117 struct evcnt ci_ev_tlbmisses; 118 119 /* 120 * Per-cpu pmap information 121 */ 122 int ci_tlb_slot; /* reserved tlb entry for cpu_info */ 123 u_int ci_pmap_asid_cur; /* current ASID */ 124 struct pmap_tlb_info *ci_tlb_info; /* tlb information for this cpu */ 125 union pmap_segtab *ci_pmap_segtabs[2]; 126 #define ci_pmap_user_segtab ci_pmap_segtabs[0] 127 #define ci_pmap_kern_segtab ci_pmap_segtabs[1] 128 #ifdef _LP64 129 union pmap_segtab *ci_pmap_seg0tabs[2]; 130 #define ci_pmap_user_seg0tab ci_pmap_seg0tabs[0] 131 #define ci_pmap_kern_seg0tab ci_pmap_seg0tabs[1] 132 #endif 133 vaddr_t ci_pmap_srcbase; /* starting VA of ephemeral src space */ 134 vaddr_t ci_pmap_dstbase; /* starting VA of ephemeral dst space */ 135 136 u_int ci_cpuwatch_count; /* number of watchpoints on this CPU */ 137 cpu_watchpoint_t ci_cpuwatch_tab[CPUWATCH_MAX]; 138 139 #ifdef MULTIPROCESSOR 140 volatile u_long ci_flags; 141 volatile uint64_t ci_request_ipis; 142 /* bitmask of IPIs requested */ 143 /* use on chips where hw cannot pass tag */ 144 uint64_t ci_active_ipis; /* bitmask of IPIs being serviced */ 145 uint32_t ci_ksp_tlb_slot; /* tlb entry for kernel stack */ 146 struct evcnt ci_evcnt_all_ipis; /* aggregated IPI counter */ 147 struct evcnt ci_evcnt_per_ipi[NIPIS]; /* individual IPI counters*/ 148 struct evcnt ci_evcnt_synci_activate_rqst; 149 struct evcnt ci_evcnt_synci_onproc_rqst; 150 struct evcnt ci_evcnt_synci_deferred_rqst; 151 struct evcnt ci_evcnt_synci_ipi_rqst; 152 153 #define CPUF_PRIMARY __BIT(0) /* CPU is primary CPU */ 154 #define CPUF_PRESENT __BIT(1) /* CPU is present */ 155 #define CPUF_RUNNING __BIT(2) /* CPU is running */ 156 #define CPUF_PAUSED __BIT(3) /* CPU is paused */ 157 #define CPUF_USERPMAP __BIT(5) /* CPU has a user pmap activated */ 158 kcpuset_t *ci_shootdowncpus; 159 kcpuset_t *ci_multicastcpus; 160 kcpuset_t *ci_watchcpus; 161 kcpuset_t *ci_ddbcpus; 162 #endif 163 #if defined(GPROF) && defined(MULTIPROCESSOR) 164 struct gmonparam *ci_gmon; /* MI per-cpu GPROF */ 165 #endif 166 167 }; 168 #endif /* _KERNEL || _KMEMUSER */ 169 170 #ifdef _KERNEL 171 172 #ifdef MULTIPROCESSOR 173 #define CPU_INFO_ITERATOR int 174 #define CPU_INFO_FOREACH(cii, ci) \ 175 cii = 0, ci = &cpu_info_store; \ 176 ci != NULL; \ 177 cii++, \ 178 ncpu ? (ci = cpu_infos[cii]) \ 179 : (ci = NULL) 180 #else 181 #define CPU_INFO_ITERATOR int __unused 182 #define CPU_INFO_FOREACH(cii, ci) \ 183 ci = &cpu_info_store; ci != NULL; ci = NULL 184 #endif 185 186 /* Note: must be kept in sync with -ffixed-?? Makefile.mips. */ 187 // MIPS_CURLWP moved to <mips/regdef.h> 188 #define MIPS_CURLWP_QUOTED "$24" 189 #define MIPS_CURLWP_LABEL _L_T8 190 #define MIPS_CURLWP_REG _R_T8 191 192 extern struct cpu_info cpu_info_store; 193 #ifdef MULTIPROCESSOR 194 extern struct cpu_info *cpuid_infos[]; 195 #endif 196 register struct lwp *mips_curlwp asm(MIPS_CURLWP_QUOTED); 197 198 #define curlwp mips_curlwp 199 #define curcpu() lwp_getcpu(curlwp) 200 #define curpcb ((struct pcb *)lwp_getpcb(curlwp)) 201 #ifdef MULTIPROCESSOR 202 #define cpu_number() (curcpu()->ci_index) 203 #define CPU_IS_PRIMARY(ci) ((ci)->ci_flags & CPUF_PRIMARY) 204 #else 205 #define cpu_number() (0) 206 #define CPU_IS_PRIMARY(ci) (true) 207 #endif 208 209 /* 210 * definitions of cpu-dependent requirements 211 * referenced in generic code 212 */ 213 214 /* 215 * Send an inter-processor interrupt to each other CPU (excludes curcpu()) 216 */ 217 void cpu_broadcast_ipi(int); 218 219 /* 220 * Send an inter-processor interrupt to CPUs in kcpuset (excludes curcpu()) 221 */ 222 void cpu_multicast_ipi(const kcpuset_t *, int); 223 224 /* 225 * Send an inter-processor interrupt to another CPU. 226 */ 227 int cpu_send_ipi(struct cpu_info *, int); 228 229 /* 230 * cpu_intr(ppl, pc, status); (most state needed by clockframe) 231 */ 232 void cpu_intr(int, vaddr_t, uint32_t); 233 234 /* 235 * Arguments to hardclock and gatherstats encapsulate the previous 236 * machine state in an opaque clockframe. 237 */ 238 struct clockframe { 239 vaddr_t pc; /* program counter at time of interrupt */ 240 uint32_t sr; /* status register at time of interrupt */ 241 bool intr; /* interrupted a interrupt */ 242 }; 243 244 /* 245 * A port must provide CLKF_USERMODE() for use in machine-independent code. 246 * These differ on r4000 and r3000 systems; provide them in the 247 * port-dependent file that includes this one, using the macros below. 248 */ 249 uint32_t cpu_clkf_usermode_mask(void); 250 251 #define CLKF_USERMODE(framep) ((framep)->sr & cpu_clkf_usermode_mask()) 252 #define CLKF_PC(framep) ((framep)->pc + 0) 253 #define CLKF_INTR(framep) ((framep)->intr + 0) 254 255 /* 256 * Misc prototypes and variable declarations. 257 */ 258 #define LWP_PC(l) cpu_lwp_pc(l) 259 260 struct proc; 261 struct lwp; 262 struct pcb; 263 struct reg; 264 265 /* 266 * Notify the current lwp (l) that it has a signal pending, 267 * process as soon as possible. 268 */ 269 void cpu_signotify(struct lwp *); 270 271 /* 272 * Give a profiling tick to the current process when the user profiling 273 * buffer pages are invalid. On the MIPS, request an ast to send us 274 * through trap, marking the proc as needing a profiling tick. 275 */ 276 void cpu_need_proftick(struct lwp *); 277 278 /* VM related hooks */ 279 void cpu_boot_secondary_processors(void); 280 void * cpu_uarea_alloc(bool); 281 bool cpu_uarea_free(void *); 282 void cpu_proc_fork(struct proc *, struct proc *); 283 vaddr_t cpu_lwp_pc(struct lwp *); 284 #ifdef _LP64 285 void cpu_vmspace_exec(struct lwp *, vaddr_t, vaddr_t); 286 #endif 287 288 #endif /* _KERNEL */ 289 290 /* 291 * CTL_MACHDEP definitions. 292 */ 293 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 294 #define CPU_BOOTED_KERNEL 2 /* string: booted kernel name */ 295 #define CPU_ROOT_DEVICE 3 /* string: root device name */ 296 #define CPU_LLSC 4 /* OS/CPU supports LL/SC instruction */ 297 #define CPU_LMMI 5 /* Loongson multimedia instructions */ 298 299 #endif /* _CPU_H_ */ 300
Indexes created Sat Sep 20 22:09:52 GMT 2025