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cpu.h revision 1.32 
      1 /*	$NetBSD: cpu.h,v 1.32 2003/08/02 19:35:26 matt Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 1999 Wolfgang Solfrank.
      5  * Copyright (C) 1999 TooLs GmbH.
      6  * Copyright (C) 1995-1997 Wolfgang Solfrank.
      7  * Copyright (C) 1995-1997 TooLs GmbH.
      8  * All rights reserved.
      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. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by TooLs GmbH.
     21  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     22  *    derived from this software without specific prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     25  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     26  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     27  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     28  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     29  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     30  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     31  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     32  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     33  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     34  */
     35 #ifndef	_POWERPC_CPU_H_
     36 #define	_POWERPC_CPU_H_
     37 
     38 struct cache_info {
     39 	int dcache_size;
     40 	int dcache_line_size;
     41 	int icache_size;
     42 	int icache_line_size;
     43 };
     44 
     45 #ifdef _KERNEL
     46 #if defined(_KERNEL_OPT)
     47 #include "opt_lockdebug.h"
     48 #include "opt_multiprocessor.h"
     49 #include "opt_ppcarch.h"
     50 #endif
     51 
     52 #include <machine/frame.h>
     53 #include <machine/psl.h>
     54 #include <machine/intr.h>
     55 #include <sys/device.h>
     56 
     57 #include <sys/sched.h>
     58 #include <dev/sysmon/sysmonvar.h>
     59 
     60 struct cpu_info {
     61 	struct schedstate_percpu ci_schedstate; /* scheduler state */
     62 	struct device *ci_dev;		/* device of corresponding cpu */
     63 	struct lwp *ci_curlwp;		/* current owner of the processor */
     64 
     65 	struct pcb *ci_curpcb;
     66 	struct pmap *ci_curpm;
     67 	struct lwp *ci_fpulwp;
     68 	struct lwp *ci_veclwp;
     69 	struct pcb *ci_idle_pcb;	/* PA of our idle pcb */
     70 	int ci_cpuid;
     71 
     72 	volatile int ci_astpending;
     73 	int ci_want_resched;
     74 	volatile u_long ci_lasttb;
     75 	volatile int ci_tickspending;
     76 	int ci_cpl;
     77 	int ci_iactive;
     78 	int ci_ipending;
     79 	int ci_intrdepth;
     80 	char *ci_intstk;
     81 	char *ci_spillstk;
     82 #define	CPUSAVE_LEN	8
     83 	register_t ci_tempsave[CPUSAVE_LEN];
     84 	register_t ci_ddbsave[CPUSAVE_LEN];
     85 	register_t ci_ipkdbsave[CPUSAVE_LEN];
     86 #define	CPUSAVE_R28	0		/* where r28 gets saved */
     87 #define	CPUSAVE_R29	1		/* where r29 gets saved */
     88 #define	CPUSAVE_R30	2		/* where r30 gets saved */
     89 #define	CPUSAVE_R31	3		/* where r31 gets saved */
     90 #define	CPUSAVE_DAR	4		/* where SPR_DAR gets saved */
     91 #define	CPUSAVE_DSISR	5		/* where SPR_DSISR gets saved */
     92 #define	CPUSAVE_SRR0	6		/* where SRR0 gets saved */
     93 #define	CPUSAVE_SRR1	7		/* where SRR1 gets saved */
     94 #define	DISISAVE_LEN	4
     95 	register_t ci_disisave[DISISAVE_LEN];
     96 	struct cache_info ci_ci;
     97 	struct sysmon_envsys ci_sysmon;
     98 	struct envsys_tre_data ci_tau_info;
     99 	struct evcnt ci_ev_clock;	/* clock intrs */
    100 	struct evcnt ci_ev_softclock;	/* softclock intrs */
    101 	struct evcnt ci_ev_softnet;	/* softnet intrs */
    102 	struct evcnt ci_ev_softserial;	/* softserial intrs */
    103 	struct evcnt ci_ev_traps;	/* calls to trap() */
    104 	struct evcnt ci_ev_kdsi;	/* kernel DSI traps */
    105 	struct evcnt ci_ev_udsi;	/* user DSI traps */
    106 	struct evcnt ci_ev_udsi_fatal;	/* user DSI trap failures */
    107 	struct evcnt ci_ev_isi;		/* user ISI traps */
    108 	struct evcnt ci_ev_isi_fatal;	/* user ISI trap failures */
    109 	struct evcnt ci_ev_pgm;		/* user PGM traps */
    110 	struct evcnt ci_ev_fpu;		/* FPU traps */
    111 	struct evcnt ci_ev_fpusw;	/* FPU context switch */
    112 	struct evcnt ci_ev_ali;		/* Alignment traps */
    113 	struct evcnt ci_ev_ali_fatal;	/* Alignment fatal trap */
    114 	struct evcnt ci_ev_scalls;	/* system call traps */
    115 	struct evcnt ci_ev_vec;		/* Altivec traps */
    116 	struct evcnt ci_ev_vecsw;	/* Altivec context switches */
    117 	struct evcnt ci_ev_umchk;	/* user MCHK events */
    118 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
    119 	u_long ci_spin_locks;		/* # of spin locks held */
    120 	u_long ci_simple_locks;		/* # of simple locks held */
    121 #endif
    122 };
    123 
    124 #ifdef MULTIPROCESSOR
    125 static __inline int
    126 cpu_number(void)
    127 {
    128 	int pir;
    129 
    130 	__asm ("mfspr %0,1023" : "=r"(pir));
    131 	return pir;
    132 }
    133 
    134 void	cpu_boot_secondary_processors(void);
    135 
    136 
    137 #define CPU_IS_PRIMARY(ci)	((ci)->ci_cpuid == 0)
    138 #define CPU_INFO_ITERATOR		int
    139 #define CPU_INFO_FOREACH(cii, ci)					\
    140 	cii = 0, ci = &cpu_info[0]; cii < CPU_MAXNUM; cii++, ci++
    141 
    142 #else
    143 
    144 #define cpu_number()		0
    145 
    146 #define CPU_INFO_ITERATOR		int
    147 #define CPU_INFO_FOREACH(cii, ci)					\
    148 	cii = 0, ci = curcpu(); ci != NULL; ci = NULL
    149 
    150 #endif /* MULTIPROCESSOR */
    151 
    152 extern struct cpu_info cpu_info[];
    153 
    154 static __inline struct cpu_info *
    155 curcpu(void)
    156 {
    157 	struct cpu_info *ci;
    158 
    159 	__asm __volatile ("mfsprg %0,0" : "=r"(ci));
    160 	return ci;
    161 }
    162 
    163 #define curlwp			(curcpu()->ci_curlwp)
    164 #define curpcb			(curcpu()->ci_curpcb)
    165 #define curpm			(curcpu()->ci_curpm)
    166 
    167 static __inline register_t
    168 mfmsr(void)
    169 {
    170 	register_t msr;
    171 
    172 	__asm __volatile ("mfmsr %0" : "=r"(msr));
    173 	return msr;
    174 }
    175 
    176 static __inline void
    177 mtmsr(register_t msr)
    178 {
    179 
    180 	__asm __volatile ("mtmsr %0" : : "r"(msr));
    181 }
    182 
    183 static __inline uint32_t
    184 mftbl(void)
    185 {
    186 	uint32_t tbl;
    187 
    188 	__asm __volatile (
    189 #ifdef PPC_IBM403
    190 "	mftblo %0	\n"
    191 #else
    192 "	mftbl %0	\n"
    193 #endif
    194 	: "=r" (tbl));
    195 
    196 	return tbl;
    197 }
    198 
    199 static __inline uint64_t
    200 mftb(void)
    201 {
    202 	uint64_t tb;
    203 
    204 #ifdef _LP64
    205 	__asm __volatile ("mftb %0" : "=r"(tb));
    206 #else
    207 	int tmp;
    208 
    209 	__asm __volatile (
    210 #ifdef PPC_IBM403
    211 "1:	mftbhi %0	\n"
    212 "	mftblo %0+1	\n"
    213 "	mftbhi %1	\n"
    214 #else
    215 "1:	mftbu %0	\n"
    216 "	mftb %0+1	\n"
    217 "	mftbu %1	\n"
    218 #endif
    219 "	cmplw %0,%1	\n"
    220 "	bne- 1b		\n"
    221 	: "=r" (tb), "=r"(tmp) :: "cr0");
    222 #endif
    223 
    224 	return tb;
    225 }
    226 
    227 static __inline uint32_t
    228 mfrtcl(void)
    229 {
    230 	uint32_t rtcl;
    231 
    232 	__asm __volatile ("mfrtcl %0" : "=r"(rtcl));
    233 	return rtcl;
    234 }
    235 
    236 static __inline void
    237 mfrtc(uint32_t *rtcp)
    238 {
    239 	uint32_t tmp;
    240 
    241 	__asm __volatile (
    242 "1:	mfrtcu	%0	\n"
    243 "	mfrtcl	%1	\n"
    244 "	mfrtcu	%2	\n"
    245 "	cmplw	%0,%2	\n"
    246 "	bne-	1b"
    247 	    : "=r"(*rtcp), "=r"(*(rtcp + 1)), "=r"(tmp));
    248 }
    249 
    250 static __inline uint32_t
    251 mfpvr(void)
    252 {
    253 	uint32_t pvr;
    254 
    255 	__asm __volatile ("mfpvr %0" : "=r"(pvr));
    256 	return (pvr);
    257 }
    258 
    259 #define	CLKF_USERMODE(frame)	(((frame)->srr1 & PSL_PR) != 0)
    260 #define	CLKF_BASEPRI(frame)	((frame)->pri == 0)
    261 #define	CLKF_PC(frame)		((frame)->srr0)
    262 #define	CLKF_INTR(frame)	((frame)->depth > 0)
    263 
    264 #define	LWP_PC(l)		(trapframe(l)->srr0)
    265 
    266 #define	cpu_swapout(p)
    267 #define cpu_wait(p)
    268 #define	cpu_proc_fork(p1, p2)
    269 
    270 extern int powersave;
    271 extern int cpu_timebase;
    272 extern int cpu_printfataltraps;
    273 extern char cpu_model[];
    274 
    275 struct cpu_info *cpu_attach_common(struct device *, int);
    276 void cpu_setup(struct device *, struct cpu_info *);
    277 void cpu_identify(char *, size_t);
    278 void delay (unsigned int);
    279 void cpu_probe_cache(void);
    280 void dcache_flush_page(vaddr_t);
    281 void icache_flush_page(vaddr_t);
    282 void dcache_flush(vaddr_t, vsize_t);
    283 void icache_flush(vaddr_t, vsize_t);
    284 void *mapiodev(paddr_t, psize_t);
    285 
    286 #define	DELAY(n)		delay(n)
    287 
    288 #define	need_resched(ci)	(ci->ci_want_resched = 1, ci->ci_astpending = 1)
    289 #define	need_proftick(p)	((p)->p_flag |= P_OWEUPC, curcpu()->ci_astpending = 1)
    290 #define	signotify(p)		(curcpu()->ci_astpending = 1)
    291 
    292 #ifdef PPC_OEA
    293 void oea_init(void (*)(void));
    294 void oea_startup(const char *);
    295 void oea_dumpsys(void);
    296 void oea_install_extint(void (*)(void));
    297 paddr_t kvtop(caddr_t);
    298 void softnet(int);
    299 
    300 extern paddr_t msgbuf_paddr;
    301 extern int cpu_altivec;
    302 #endif
    303 
    304 #endif /* _KERNEL */
    305 
    306 #if defined(_KERNEL) || defined(_STANDALONE)
    307 #if !defined(CACHELINESIZE)
    308 #ifdef PPC_IBM403
    309 #define	CACHELINESIZE	16
    310 #else
    311 #define	CACHELINESIZE	32
    312 #endif
    313 #endif
    314 #endif
    315 
    316 void __syncicache(void *, size_t);
    317 
    318 /*
    319  * CTL_MACHDEP definitions.
    320  */
    321 #define	CPU_CACHELINE		1
    322 #define	CPU_TIMEBASE		2
    323 #define	CPU_CPUTEMP		3
    324 #define	CPU_PRINTFATALTRAPS	4
    325 #define	CPU_CACHEINFO		5
    326 #define	CPU_ALTIVEC		6
    327 #define	CPU_MODEL		7
    328 #define	CPU_POWERSAVE		8
    329 #define	CPU_MAXID		9
    330 
    331 #define	CTL_MACHDEP_NAMES { \
    332 	{ 0, 0 }, \
    333 	{ "cachelinesize", CTLTYPE_INT }, \
    334 	{ "timebase", CTLTYPE_INT }, \
    335 	{ "cputempature", CTLTYPE_INT }, \
    336 	{ "printfataltraps", CTLTYPE_INT }, \
    337 	{ "cacheinfo", CTLTYPE_STRUCT }, \
    338 	{ "altivec", CTLTYPE_INT }, \
    339 	{ "model", CTLTYPE_STRING }, \
    340 	{ "powersave", CTLTYPE_INT }, \
    341 }
    342 
    343 #endif	/* _POWERPC_CPU_H_ */
    344