]> CyberLeo.Net >> Repos - FreeBSD/FreeBSD.git/blob - sys/powerpc/powerpc/cpu.c
Update DTS files from Linux 4.12
[FreeBSD/FreeBSD.git] / sys / powerpc / powerpc / cpu.c
1 /*-
2  * Copyright (c) 2001 Matt Thomas.
3  * Copyright (c) 2001 Tsubai Masanari.
4  * Copyright (c) 1998, 1999, 2001 Internet Research Institute, Inc.
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  * 3. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *      This product includes software developed by
18  *      Internet Research Institute, Inc.
19  * 4. The name of the author may not be used to endorse or promote products
20  *    derived from this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  */
33 /*-
34  * Copyright (C) 2003 Benno Rice.
35  * All rights reserved.
36  *
37  * Redistribution and use in source and binary forms, with or without
38  * modification, are permitted provided that the following conditions
39  * are met:
40  * 1. Redistributions of source code must retain the above copyright
41  *    notice, this list of conditions and the following disclaimer.
42  * 2. Redistributions in binary form must reproduce the above copyright
43  *    notice, this list of conditions and the following disclaimer in the
44  *    documentation and/or other materials provided with the distribution.
45  *
46  * THIS SOFTWARE IS PROVIDED BY Benno Rice ``AS IS'' AND ANY EXPRESS OR
47  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
48  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
49  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
50  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
51  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
52  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
53  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
54  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
55  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
56  *
57  * from $NetBSD: cpu_subr.c,v 1.1 2003/02/03 17:10:09 matt Exp $
58  * $FreeBSD$
59  */
60
61 #include <sys/param.h>
62 #include <sys/systm.h>
63 #include <sys/bus.h>
64 #include <sys/conf.h>
65 #include <sys/cpu.h>
66 #include <sys/kernel.h>
67 #include <sys/proc.h>
68 #include <sys/sysctl.h>
69
70 #include <machine/bus.h>
71 #include <machine/cpu.h>
72 #include <machine/hid.h>
73 #include <machine/md_var.h>
74 #include <machine/smp.h>
75 #include <machine/spr.h>
76
77 #include <dev/ofw/openfirm.h>
78
79 static void     cpu_6xx_setup(int cpuid, uint16_t vers);
80 static void     cpu_970_setup(int cpuid, uint16_t vers);
81 static void     cpu_booke_setup(int cpuid, uint16_t vers);
82
83 int powerpc_pow_enabled;
84 void (*cpu_idle_hook)(sbintime_t) = NULL;
85 static void     cpu_idle_60x(sbintime_t);
86 static void     cpu_idle_booke(sbintime_t);
87
88 struct cputab {
89         const char      *name;
90         uint16_t        version;
91         uint16_t        revfmt;
92         int             features;       /* Do not include PPC_FEATURE_32 or
93                                          * PPC_FEATURE_HAS_MMU */
94         int             features2;
95         void            (*cpu_setup)(int cpuid, uint16_t vers);
96 };
97 #define REVFMT_MAJMIN   1       /* %u.%u */
98 #define REVFMT_HEX      2       /* 0x%04x */
99 #define REVFMT_DEC      3       /* %u */
100 static const struct cputab models[] = {
101         { "Motorola PowerPC 601",       MPC601,         REVFMT_DEC,
102            PPC_FEATURE_HAS_FPU | PPC_FEATURE_UNIFIED_CACHE, 0, cpu_6xx_setup },
103         { "Motorola PowerPC 602",       MPC602,         REVFMT_DEC,
104            PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
105         { "Motorola PowerPC 603",       MPC603,         REVFMT_MAJMIN,
106            PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
107         { "Motorola PowerPC 603e",      MPC603e,        REVFMT_MAJMIN,
108            PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
109         { "Motorola PowerPC 603ev",     MPC603ev,       REVFMT_MAJMIN,
110            PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
111         { "Motorola PowerPC 604",       MPC604,         REVFMT_MAJMIN,
112            PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
113         { "Motorola PowerPC 604ev",     MPC604ev,       REVFMT_MAJMIN,
114            PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
115         { "Motorola PowerPC 620",       MPC620,         REVFMT_HEX,
116            PPC_FEATURE_64 | PPC_FEATURE_HAS_FPU, 0, NULL },
117         { "Motorola PowerPC 750",       MPC750,         REVFMT_MAJMIN,
118            PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
119         { "IBM PowerPC 750FX",          IBM750FX,       REVFMT_MAJMIN,
120            PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
121         { "IBM PowerPC 970",            IBM970,         REVFMT_MAJMIN,
122            PPC_FEATURE_64 | PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU,
123            0, cpu_970_setup },
124         { "IBM PowerPC 970FX",          IBM970FX,       REVFMT_MAJMIN,
125            PPC_FEATURE_64 | PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU,
126            0, cpu_970_setup },
127         { "IBM PowerPC 970GX",          IBM970GX,       REVFMT_MAJMIN,
128            PPC_FEATURE_64 | PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU,
129            0, cpu_970_setup },
130         { "IBM PowerPC 970MP",          IBM970MP,       REVFMT_MAJMIN,
131            PPC_FEATURE_64 | PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU,
132            0, cpu_970_setup },
133         { "IBM POWER4",         IBMPOWER4,      REVFMT_MAJMIN,
134            PPC_FEATURE_64 | PPC_FEATURE_HAS_FPU, 0, NULL },
135         { "IBM POWER4+",        IBMPOWER4PLUS,  REVFMT_MAJMIN,
136            PPC_FEATURE_64 | PPC_FEATURE_HAS_FPU, 0, NULL },
137         { "IBM POWER5",         IBMPOWER5,      REVFMT_MAJMIN,
138            PPC_FEATURE_64 | PPC_FEATURE_HAS_FPU | PPC_FEATURE_SMT, 0, NULL },
139         { "IBM POWER5+",        IBMPOWER5PLUS,  REVFMT_MAJMIN,
140            PPC_FEATURE_64 | PPC_FEATURE_HAS_FPU | PPC_FEATURE_SMT, 0, NULL },
141         { "IBM POWER6",         IBMPOWER6,      REVFMT_MAJMIN,
142            PPC_FEATURE_64 | PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU |
143            PPC_FEATURE_SMT | PPC_FEATURE_ARCH_2_05, 0, NULL },
144         { "IBM POWER7",         IBMPOWER7,      REVFMT_MAJMIN,
145            PPC_FEATURE_64 | PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU |
146            PPC_FEATURE_SMT | PPC_FEATURE_ARCH_2_05 | PPC_FEATURE_ARCH_2_06 |
147            PPC_FEATURE_HAS_VSX, 0, NULL },
148         { "IBM POWER7+",        IBMPOWER7PLUS,  REVFMT_MAJMIN,
149            PPC_FEATURE_64 | PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU |
150            PPC_FEATURE_SMT | PPC_FEATURE_ARCH_2_05 | PPC_FEATURE_ARCH_2_06 |
151            PPC_FEATURE_HAS_VSX, 0, NULL },
152         { "IBM POWER8E",        IBMPOWER8E,     REVFMT_MAJMIN,
153            PPC_FEATURE_64 | PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU |
154            PPC_FEATURE_SMT | PPC_FEATURE_ARCH_2_05 | PPC_FEATURE_ARCH_2_06 |
155            PPC_FEATURE_HAS_VSX,
156            PPC_FEATURE2_ARCH_2_07 | PPC_FEATURE2_HAS_HTM |
157            PPC_FEATURE2_HAS_VCRYPTO, NULL },
158         { "IBM POWER8",         IBMPOWER8,      REVFMT_MAJMIN,
159            PPC_FEATURE_64 | PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU |
160            PPC_FEATURE_SMT | PPC_FEATURE_ARCH_2_05 | PPC_FEATURE_ARCH_2_06 |
161            PPC_FEATURE_HAS_VSX,
162            PPC_FEATURE2_ARCH_2_07 | PPC_FEATURE2_HAS_HTM |
163            PPC_FEATURE2_HAS_VCRYPTO, NULL },
164         { "Motorola PowerPC 7400",      MPC7400,        REVFMT_MAJMIN,
165            PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
166         { "Motorola PowerPC 7410",      MPC7410,        REVFMT_MAJMIN,
167            PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
168         { "Motorola PowerPC 7450",      MPC7450,        REVFMT_MAJMIN,
169            PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
170         { "Motorola PowerPC 7455",      MPC7455,        REVFMT_MAJMIN,
171            PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
172         { "Motorola PowerPC 7457",      MPC7457,        REVFMT_MAJMIN,
173            PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
174         { "Motorola PowerPC 7447A",     MPC7447A,       REVFMT_MAJMIN,
175            PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
176         { "Motorola PowerPC 7448",      MPC7448,        REVFMT_MAJMIN,
177            PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
178         { "Motorola PowerPC 8240",      MPC8240,        REVFMT_MAJMIN,
179            PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
180         { "Motorola PowerPC 8245",      MPC8245,        REVFMT_MAJMIN,
181            PPC_FEATURE_HAS_FPU, 0, cpu_6xx_setup },
182         { "Freescale e500v1 core",      FSL_E500v1,     REVFMT_MAJMIN,
183            PPC_FEATURE_BOOKE | PPC_FEATURE_HAS_SPE | PPC_FEATURE_HAS_EFP_SINGLE,
184            0, cpu_booke_setup },
185         { "Freescale e500v2 core",      FSL_E500v2,     REVFMT_MAJMIN,
186            PPC_FEATURE_BOOKE | PPC_FEATURE_HAS_SPE |
187            PPC_FEATURE_HAS_EFP_SINGLE | PPC_FEATURE_HAS_EFP_DOUBLE, 0,
188            cpu_booke_setup },
189         { "Freescale e500mc core",      FSL_E500mc,     REVFMT_MAJMIN,
190            PPC_FEATURE_BOOKE | PPC_FEATURE_HAS_FPU, 0, cpu_booke_setup },
191         { "Freescale e5500 core",       FSL_E5500,      REVFMT_MAJMIN,
192            PPC_FEATURE_BOOKE | PPC_FEATURE_64 | PPC_FEATURE_HAS_FPU, 0,
193            cpu_booke_setup },
194         { "Freescale e6500 core",       FSL_E6500,      REVFMT_MAJMIN,
195            PPC_FEATURE_BOOKE | PPC_FEATURE_64 | PPC_FEATURE_HAS_ALTIVEC |
196            PPC_FEATURE_HAS_FPU, 0, cpu_booke_setup },
197         { "IBM Cell Broadband Engine",  IBMCELLBE,      REVFMT_MAJMIN,
198            PPC_FEATURE_64 | PPC_FEATURE_HAS_ALTIVEC | PPC_FEATURE_HAS_FPU |
199            PPC_FEATURE_SMT, 0, NULL},
200         { "Unknown PowerPC CPU",        0,              REVFMT_HEX, 0, 0, NULL },
201 };
202
203 static void     cpu_6xx_print_cacheinfo(u_int, uint16_t);
204 static int      cpu_feature_bit(SYSCTL_HANDLER_ARGS);
205
206 static char model[64];
207 SYSCTL_STRING(_hw, HW_MODEL, model, CTLFLAG_RD, model, 0, "");
208
209 int cpu_features = PPC_FEATURE_32 | PPC_FEATURE_HAS_MMU;
210 int cpu_features2 = 0;
211 SYSCTL_OPAQUE(_hw, OID_AUTO, cpu_features, CTLFLAG_RD,
212     &cpu_features, sizeof(cpu_features), "IX", "PowerPC CPU features");
213 SYSCTL_OPAQUE(_hw, OID_AUTO, cpu_features2, CTLFLAG_RD,
214     &cpu_features2, sizeof(cpu_features2), "IX", "PowerPC CPU features 2");
215
216 /* Provide some user-friendly aliases for bits in cpu_features */
217 SYSCTL_PROC(_hw, OID_AUTO, floatingpoint, CTLTYPE_INT | CTLFLAG_RD,
218     0, PPC_FEATURE_HAS_FPU, cpu_feature_bit, "I",
219     "Floating point instructions executed in hardware");
220 SYSCTL_PROC(_hw, OID_AUTO, altivec, CTLTYPE_INT | CTLFLAG_RD,
221     0, PPC_FEATURE_HAS_ALTIVEC, cpu_feature_bit, "I", "CPU supports Altivec");
222
223 void
224 cpu_setup(u_int cpuid)
225 {
226         u_int           pvr, maj, min;
227         uint16_t        vers, rev, revfmt;
228         uint64_t        cps;
229         const struct    cputab *cp;
230         const char      *name;
231
232         pvr = mfpvr();
233         vers = pvr >> 16;
234         rev = pvr;
235         switch (vers) {
236                 case MPC7410:
237                         min = (pvr >> 0) & 0xff;
238                         maj = min <= 4 ? 1 : 2;
239                         break;
240                 case FSL_E500v1:
241                 case FSL_E500v2:
242                 case FSL_E500mc:
243                 case FSL_E5500:
244                         maj = (pvr >>  4) & 0xf;
245                         min = (pvr >>  0) & 0xf;
246                         break;
247                 default:
248                         maj = (pvr >>  8) & 0xf;
249                         min = (pvr >>  0) & 0xf;
250         }
251
252         for (cp = models; cp->version != 0; cp++) {
253                 if (cp->version == vers)
254                         break;
255         }
256
257         revfmt = cp->revfmt;
258         name = cp->name;
259         if (rev == MPC750 && pvr == 15) {
260                 name = "Motorola MPC755";
261                 revfmt = REVFMT_HEX;
262         }
263         strncpy(model, name, sizeof(model) - 1);
264
265         printf("cpu%d: %s revision ", cpuid, name);
266
267         switch (revfmt) {
268                 case REVFMT_MAJMIN:
269                         printf("%u.%u", maj, min);
270                         break;
271                 case REVFMT_HEX:
272                         printf("0x%04x", rev);
273                         break;
274                 case REVFMT_DEC:
275                         printf("%u", rev);
276                         break;
277         }
278
279         if (cpu_est_clockrate(0, &cps) == 0)
280                 printf(", %jd.%02jd MHz", cps / 1000000, (cps / 10000) % 100);
281         printf("\n");
282
283         cpu_features |= cp->features;
284         cpu_features2 |= cp->features2;
285         printf("cpu%d: Features %b\n", cpuid, cpu_features,
286             PPC_FEATURE_BITMASK);
287         if (cpu_features2 != 0)
288                 printf("cpu%d: Features2 %b\n", cpuid, cpu_features2,
289                     PPC_FEATURE2_BITMASK);
290
291         /*
292          * Configure CPU
293          */
294         if (cp->cpu_setup != NULL)
295                 cp->cpu_setup(cpuid, vers);
296 }
297
298 /* Get current clock frequency for the given cpu id. */
299 int
300 cpu_est_clockrate(int cpu_id, uint64_t *cps)
301 {
302         uint16_t        vers;
303         register_t      msr;
304         phandle_t       cpu, dev, root;
305         int             res  = 0;
306         char            buf[8];
307
308         vers = mfpvr() >> 16;
309         msr = mfmsr();
310         mtmsr(msr & ~PSL_EE);
311
312         switch (vers) {
313                 case MPC7450:
314                 case MPC7455:
315                 case MPC7457:
316                 case MPC750:
317                 case IBM750FX:
318                 case MPC7400:
319                 case MPC7410:
320                 case MPC7447A:
321                 case MPC7448:
322                         mtspr(SPR_MMCR0, SPR_MMCR0_FC);
323                         mtspr(SPR_PMC1, 0);
324                         mtspr(SPR_MMCR0, SPR_MMCR0_PMC1SEL(PMCN_CYCLES));
325                         DELAY(1000);
326                         *cps = (mfspr(SPR_PMC1) * 1000) + 4999;
327                         mtspr(SPR_MMCR0, SPR_MMCR0_FC);
328
329                         mtmsr(msr);
330                         return (0);
331                 case IBM970:
332                 case IBM970FX:
333                 case IBM970MP:
334                         isync();
335                         mtspr(SPR_970MMCR0, SPR_MMCR0_FC);
336                         isync();
337                         mtspr(SPR_970MMCR1, 0);
338                         mtspr(SPR_970MMCRA, 0);
339                         mtspr(SPR_970PMC1, 0);
340                         mtspr(SPR_970MMCR0,
341                             SPR_970MMCR0_PMC1SEL(PMC970N_CYCLES));
342                         isync();
343                         DELAY(1000);
344                         powerpc_sync();
345                         mtspr(SPR_970MMCR0, SPR_MMCR0_FC);
346                         *cps = (mfspr(SPR_970PMC1) * 1000) + 4999;
347
348                         mtmsr(msr);
349                         return (0);
350
351                 default:
352                         root = OF_peer(0);
353                         if (root == 0)
354                                 return (ENXIO);
355
356                         dev = OF_child(root);
357                         while (dev != 0) {
358                                 res = OF_getprop(dev, "name", buf, sizeof(buf));
359                                 if (res > 0 && strcmp(buf, "cpus") == 0)
360                                         break;
361                                 dev = OF_peer(dev);
362                         }
363                         cpu = OF_child(dev);
364                         while (cpu != 0) {
365                                 res = OF_getprop(cpu, "device_type", buf,
366                                                 sizeof(buf));
367                                 if (res > 0 && strcmp(buf, "cpu") == 0)
368                                         break;
369                                 cpu = OF_peer(cpu);
370                         }
371                         if (cpu == 0)
372                                 return (ENOENT);
373                         if (OF_getprop(cpu, "ibm,extended-clock-frequency",
374                             cps, sizeof(*cps)) >= 0) {
375                                 return (0);
376                         } else if (OF_getprop(cpu, "clock-frequency", cps, 
377                             sizeof(cell_t)) >= 0) {
378                                 *cps >>= 32;
379                                 return (0);
380                         } else {
381                                 return (ENOENT);
382                         }
383         }
384 }
385
386 void
387 cpu_6xx_setup(int cpuid, uint16_t vers)
388 {
389         register_t hid0, pvr;
390         const char *bitmask;
391
392         hid0 = mfspr(SPR_HID0);
393         pvr = mfpvr();
394
395         /*
396          * Configure power-saving mode.
397          */
398         switch (vers) {
399                 case MPC603:
400                 case MPC603e:
401                 case MPC603ev:
402                 case MPC604ev:
403                 case MPC750:
404                 case IBM750FX:
405                 case MPC7400:
406                 case MPC7410:
407                 case MPC8240:
408                 case MPC8245:
409                         /* Select DOZE mode. */
410                         hid0 &= ~(HID0_DOZE | HID0_NAP | HID0_SLEEP);
411                         hid0 |= HID0_DOZE | HID0_DPM;
412                         powerpc_pow_enabled = 1;
413                         break;
414
415                 case MPC7448:
416                 case MPC7447A:
417                 case MPC7457:
418                 case MPC7455:
419                 case MPC7450:
420                         /* Enable the 7450 branch caches */
421                         hid0 |= HID0_SGE | HID0_BTIC;
422                         hid0 |= HID0_LRSTK | HID0_FOLD | HID0_BHT;
423                         /* Disable BTIC on 7450 Rev 2.0 or earlier and on 7457 */
424                         if (((pvr >> 16) == MPC7450 && (pvr & 0xFFFF) <= 0x0200)
425                                         || (pvr >> 16) == MPC7457)
426                                 hid0 &= ~HID0_BTIC;
427                         /* Select NAP mode. */
428                         hid0 &= ~(HID0_DOZE | HID0_NAP | HID0_SLEEP);
429                         hid0 |= HID0_NAP | HID0_DPM;
430                         powerpc_pow_enabled = 1;
431                         break;
432
433                 default:
434                         /* No power-saving mode is available. */ ;
435         }
436
437         switch (vers) {
438                 case IBM750FX:
439                 case MPC750:
440                         hid0 &= ~HID0_DBP;              /* XXX correct? */
441                         hid0 |= HID0_EMCP | HID0_BTIC | HID0_SGE | HID0_BHT;
442                         break;
443
444                 case MPC7400:
445                 case MPC7410:
446                         hid0 &= ~HID0_SPD;
447                         hid0 |= HID0_EMCP | HID0_BTIC | HID0_SGE | HID0_BHT;
448                         hid0 |= HID0_EIEC;
449                         break;
450
451         }
452
453         mtspr(SPR_HID0, hid0);
454
455         if (bootverbose)
456                 cpu_6xx_print_cacheinfo(cpuid, vers);
457
458         switch (vers) {
459                 case MPC7447A:
460                 case MPC7448:
461                 case MPC7450:
462                 case MPC7455:
463                 case MPC7457:
464                         bitmask = HID0_7450_BITMASK;
465                         break;
466                 default:
467                         bitmask = HID0_BITMASK;
468                         break;
469         }
470
471         printf("cpu%d: HID0 %b\n", cpuid, (int)hid0, bitmask);
472
473         if (cpu_idle_hook == NULL)
474                 cpu_idle_hook = cpu_idle_60x;
475 }
476
477
478 static void
479 cpu_6xx_print_cacheinfo(u_int cpuid, uint16_t vers)
480 {
481         register_t hid;
482
483         hid = mfspr(SPR_HID0);
484         printf("cpu%u: ", cpuid);
485         printf("L1 I-cache %sabled, ", (hid & HID0_ICE) ? "en" : "dis");
486         printf("L1 D-cache %sabled\n", (hid & HID0_DCE) ? "en" : "dis");
487
488         printf("cpu%u: ", cpuid);
489         if (mfspr(SPR_L2CR) & L2CR_L2E) {
490                 switch (vers) {
491                 case MPC7450:
492                 case MPC7455:
493                 case MPC7457:
494                         printf("256KB L2 cache, ");
495                         if (mfspr(SPR_L3CR) & L3CR_L3E)
496                                 printf("%cMB L3 backside cache",
497                                     mfspr(SPR_L3CR) & L3CR_L3SIZ ? '2' : '1');
498                         else
499                                 printf("L3 cache disabled");
500                         printf("\n");
501                         break;
502                 case IBM750FX:
503                         printf("512KB L2 cache\n");
504                         break; 
505                 default:
506                         switch (mfspr(SPR_L2CR) & L2CR_L2SIZ) {
507                         case L2SIZ_256K:
508                                 printf("256KB ");
509                                 break;
510                         case L2SIZ_512K:
511                                 printf("512KB ");
512                                 break;
513                         case L2SIZ_1M:
514                                 printf("1MB ");
515                                 break;
516                         }
517                         printf("write-%s", (mfspr(SPR_L2CR) & L2CR_L2WT)
518                             ? "through" : "back");
519                         if (mfspr(SPR_L2CR) & L2CR_L2PE)
520                                 printf(", with parity");
521                         printf(" backside cache\n");
522                         break;
523                 }
524         } else
525                 printf("L2 cache disabled\n");
526 }
527
528 static void
529 cpu_booke_setup(int cpuid, uint16_t vers)
530 {
531 #ifdef BOOKE_E500
532         register_t hid0;
533
534         hid0 = mfspr(SPR_HID0);
535
536         /* Programe power-management mode. */
537         hid0 &= ~(HID0_DOZE | HID0_NAP | HID0_SLEEP);
538         hid0 |= HID0_DOZE;
539
540         mtspr(SPR_HID0, hid0);
541
542         printf("cpu%d: HID0 %b\n", cpuid, (int)hid0, HID0_E500_BITMASK);
543 #endif
544
545         if (cpu_idle_hook == NULL)
546                 cpu_idle_hook = cpu_idle_booke;
547 }
548
549 static void
550 cpu_970_setup(int cpuid, uint16_t vers)
551 {
552 #ifdef AIM
553         uint32_t hid0_hi, hid0_lo;
554
555         __asm __volatile ("mfspr %0,%2; clrldi %1,%0,32; srdi %0,%0,32;"
556             : "=r" (hid0_hi), "=r" (hid0_lo) : "K" (SPR_HID0));
557
558         /* Configure power-saving mode */
559         switch (vers) {
560         case IBM970MP:
561                 hid0_hi |= (HID0_DEEPNAP | HID0_NAP | HID0_DPM);
562                 hid0_hi &= ~HID0_DOZE;
563                 break;
564         default:
565                 hid0_hi |= (HID0_NAP | HID0_DPM);
566                 hid0_hi &= ~(HID0_DOZE | HID0_DEEPNAP);
567                 break;
568         }
569         powerpc_pow_enabled = 1;
570
571         __asm __volatile (" \
572                 sync; isync;                                    \
573                 sldi    %0,%0,32; or %0,%0,%1;                  \
574                 mtspr   %2, %0;                                 \
575                 mfspr   %0, %2; mfspr   %0, %2; mfspr   %0, %2; \
576                 mfspr   %0, %2; mfspr   %0, %2; mfspr   %0, %2; \
577                 sync; isync"
578             :: "r" (hid0_hi), "r"(hid0_lo), "K" (SPR_HID0));
579
580         __asm __volatile ("mfspr %0,%1; srdi %0,%0,32;"
581             : "=r" (hid0_hi) : "K" (SPR_HID0));
582         printf("cpu%d: HID0 %b\n", cpuid, (int)(hid0_hi), HID0_970_BITMASK);
583 #endif
584
585         cpu_idle_hook = cpu_idle_60x;
586 }
587
588 static int
589 cpu_feature_bit(SYSCTL_HANDLER_ARGS)
590 {
591         int result;
592
593         result = (cpu_features & arg2) ? 1 : 0;
594
595         return (sysctl_handle_int(oidp, &result, 0, req));
596 }
597
598 void
599 cpu_idle(int busy)
600 {
601         sbintime_t sbt = -1;
602
603 #ifdef INVARIANTS
604         if ((mfmsr() & PSL_EE) != PSL_EE) {
605                 struct thread *td = curthread;
606                 printf("td msr %#lx\n", (u_long)td->td_md.md_saved_msr);
607                 panic("ints disabled in idleproc!");
608         }
609 #endif
610
611         CTR2(KTR_SPARE2, "cpu_idle(%d) at %d",
612             busy, curcpu);
613
614         if (cpu_idle_hook != NULL) {
615                 if (!busy) {
616                         critical_enter();
617                         sbt = cpu_idleclock();
618                 }
619                 cpu_idle_hook(sbt);
620                 if (!busy) {
621                         cpu_activeclock();
622                         critical_exit();
623                 }
624         }
625
626         CTR2(KTR_SPARE2, "cpu_idle(%d) at %d done",
627             busy, curcpu);
628 }
629
630 static void
631 cpu_idle_60x(sbintime_t sbt)
632 {
633         register_t msr;
634         uint16_t vers;
635
636         if (!powerpc_pow_enabled)
637                 return;
638
639         msr = mfmsr();
640         vers = mfpvr() >> 16;
641
642 #ifdef AIM
643         switch (vers) {
644         case IBM970:
645         case IBM970FX:
646         case IBM970MP:
647         case MPC7447A:
648         case MPC7448:
649         case MPC7450:
650         case MPC7455:
651         case MPC7457:
652                 __asm __volatile("\
653                             dssall; sync; mtmsr %0; isync"
654                             :: "r"(msr | PSL_POW));
655                 break;
656         default:
657                 powerpc_sync();
658                 mtmsr(msr | PSL_POW);
659                 isync();
660                 break;
661         }
662 #endif
663 }
664
665 static void
666 cpu_idle_booke(sbintime_t sbt)
667 {
668
669 #ifdef BOOKE_E500
670         platform_cpu_idle(PCPU_GET(cpuid));
671 #endif
672 }
673