3b7a492d9b682bb3d3100c0d063af0b386f157a6
[linux-3.10.git] / arch / powerpc / platforms / powermac / setup.c
1 /*
2  *  Powermac setup and early boot code plus other random bits.
3  *
4  *  PowerPC version
5  *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
6  *
7  *  Adapted for Power Macintosh by Paul Mackerras
8  *    Copyright (C) 1996 Paul Mackerras (paulus@samba.org)
9  *
10  *  Derived from "arch/alpha/kernel/setup.c"
11  *    Copyright (C) 1995 Linus Torvalds
12  *
13  *  Maintained by Benjamin Herrenschmidt (benh@kernel.crashing.org)
14  *
15  *  This program is free software; you can redistribute it and/or
16  *  modify it under the terms of the GNU General Public License
17  *  as published by the Free Software Foundation; either version
18  *  2 of the License, or (at your option) any later version.
19  *
20  */
21
22 /*
23  * bootup setup stuff..
24  */
25
26 #include <linux/config.h>
27 #include <linux/init.h>
28 #include <linux/errno.h>
29 #include <linux/sched.h>
30 #include <linux/kernel.h>
31 #include <linux/mm.h>
32 #include <linux/stddef.h>
33 #include <linux/unistd.h>
34 #include <linux/ptrace.h>
35 #include <linux/slab.h>
36 #include <linux/user.h>
37 #include <linux/a.out.h>
38 #include <linux/tty.h>
39 #include <linux/string.h>
40 #include <linux/delay.h>
41 #include <linux/ioport.h>
42 #include <linux/major.h>
43 #include <linux/initrd.h>
44 #include <linux/vt_kern.h>
45 #include <linux/console.h>
46 #include <linux/ide.h>
47 #include <linux/pci.h>
48 #include <linux/adb.h>
49 #include <linux/cuda.h>
50 #include <linux/pmu.h>
51 #include <linux/irq.h>
52 #include <linux/seq_file.h>
53 #include <linux/root_dev.h>
54 #include <linux/bitops.h>
55 #include <linux/suspend.h>
56
57 #include <asm/reg.h>
58 #include <asm/sections.h>
59 #include <asm/prom.h>
60 #include <asm/system.h>
61 #include <asm/pgtable.h>
62 #include <asm/io.h>
63 #include <asm/kexec.h>
64 #include <asm/pci-bridge.h>
65 #include <asm/ohare.h>
66 #include <asm/mediabay.h>
67 #include <asm/machdep.h>
68 #include <asm/dma.h>
69 #include <asm/cputable.h>
70 #include <asm/btext.h>
71 #include <asm/pmac_feature.h>
72 #include <asm/time.h>
73 #include <asm/of_device.h>
74 #include <asm/mmu_context.h>
75 #include <asm/iommu.h>
76 #include <asm/smu.h>
77 #include <asm/pmc.h>
78 #include <asm/mpic.h>
79 #include <asm/lmb.h>
80
81 #include "pmac.h"
82
83 #undef SHOW_GATWICK_IRQS
84
85 unsigned char drive_info;
86
87 int ppc_override_l2cr = 0;
88 int ppc_override_l2cr_value;
89 int has_l2cache = 0;
90
91 int pmac_newworld = 1;
92
93 static int current_root_goodness = -1;
94
95 extern int pmac_newworld;
96 extern struct machdep_calls pmac_md;
97
98 #define DEFAULT_ROOT_DEVICE Root_SDA1   /* sda1 - slightly silly choice */
99
100 #ifdef CONFIG_PPC64
101 #include <asm/udbg.h>
102 int sccdbg;
103 #endif
104
105 extern void zs_kgdb_hook(int tty_num);
106
107 sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
108 EXPORT_SYMBOL(sys_ctrler);
109
110 #ifdef CONFIG_PMAC_SMU
111 unsigned long smu_cmdbuf_abs;
112 EXPORT_SYMBOL(smu_cmdbuf_abs);
113 #endif
114
115 #ifdef CONFIG_SMP
116 extern struct smp_ops_t psurge_smp_ops;
117 extern struct smp_ops_t core99_smp_ops;
118 #endif /* CONFIG_SMP */
119
120 static void pmac_show_cpuinfo(struct seq_file *m)
121 {
122         struct device_node *np;
123         char *pp;
124         int plen;
125         int mbmodel;
126         unsigned int mbflags;
127         char* mbname;
128
129         mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
130                                     PMAC_MB_INFO_MODEL, 0);
131         mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
132                                     PMAC_MB_INFO_FLAGS, 0);
133         if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME,
134                               (long) &mbname) != 0)
135                 mbname = "Unknown";
136
137         /* find motherboard type */
138         seq_printf(m, "machine\t\t: ");
139         np = of_find_node_by_path("/");
140         if (np != NULL) {
141                 pp = (char *) get_property(np, "model", NULL);
142                 if (pp != NULL)
143                         seq_printf(m, "%s\n", pp);
144                 else
145                         seq_printf(m, "PowerMac\n");
146                 pp = (char *) get_property(np, "compatible", &plen);
147                 if (pp != NULL) {
148                         seq_printf(m, "motherboard\t:");
149                         while (plen > 0) {
150                                 int l = strlen(pp) + 1;
151                                 seq_printf(m, " %s", pp);
152                                 plen -= l;
153                                 pp += l;
154                         }
155                         seq_printf(m, "\n");
156                 }
157                 of_node_put(np);
158         } else
159                 seq_printf(m, "PowerMac\n");
160
161         /* print parsed model */
162         seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
163         seq_printf(m, "pmac flags\t: %08x\n", mbflags);
164
165         /* find l2 cache info */
166         np = of_find_node_by_name(NULL, "l2-cache");
167         if (np == NULL)
168                 np = of_find_node_by_type(NULL, "cache");
169         if (np != NULL) {
170                 unsigned int *ic = (unsigned int *)
171                         get_property(np, "i-cache-size", NULL);
172                 unsigned int *dc = (unsigned int *)
173                         get_property(np, "d-cache-size", NULL);
174                 seq_printf(m, "L2 cache\t:");
175                 has_l2cache = 1;
176                 if (get_property(np, "cache-unified", NULL) != 0 && dc) {
177                         seq_printf(m, " %dK unified", *dc / 1024);
178                 } else {
179                         if (ic)
180                                 seq_printf(m, " %dK instruction", *ic / 1024);
181                         if (dc)
182                                 seq_printf(m, "%s %dK data",
183                                            (ic? " +": ""), *dc / 1024);
184                 }
185                 pp = get_property(np, "ram-type", NULL);
186                 if (pp)
187                         seq_printf(m, " %s", pp);
188                 seq_printf(m, "\n");
189                 of_node_put(np);
190         }
191
192         /* Indicate newworld/oldworld */
193         seq_printf(m, "pmac-generation\t: %s\n",
194                    pmac_newworld ? "NewWorld" : "OldWorld");
195 }
196
197 #ifndef CONFIG_ADB_CUDA
198 int find_via_cuda(void)
199 {
200         if (!find_devices("via-cuda"))
201                 return 0;
202         printk("WARNING ! Your machine is CUDA-based but your kernel\n");
203         printk("          wasn't compiled with CONFIG_ADB_CUDA option !\n");
204         return 0;
205 }
206 #endif
207
208 #ifndef CONFIG_ADB_PMU
209 int find_via_pmu(void)
210 {
211         if (!find_devices("via-pmu"))
212                 return 0;
213         printk("WARNING ! Your machine is PMU-based but your kernel\n");
214         printk("          wasn't compiled with CONFIG_ADB_PMU option !\n");
215         return 0;
216 }
217 #endif
218
219 #ifndef CONFIG_PMAC_SMU
220 int smu_init(void)
221 {
222         /* should check and warn if SMU is present */
223         return 0;
224 }
225 #endif
226
227 #ifdef CONFIG_PPC32
228 static volatile u32 *sysctrl_regs;
229
230 static void __init ohare_init(void)
231 {
232         /* this area has the CPU identification register
233            and some registers used by smp boards */
234         sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000);
235
236         /*
237          * Turn on the L2 cache.
238          * We assume that we have a PSX memory controller iff
239          * we have an ohare I/O controller.
240          */
241         if (find_devices("ohare") != NULL) {
242                 if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
243                         if (sysctrl_regs[4] & 0x10)
244                                 sysctrl_regs[4] |= 0x04000020;
245                         else
246                                 sysctrl_regs[4] |= 0x04000000;
247                         if(has_l2cache)
248                                 printk(KERN_INFO "Level 2 cache enabled\n");
249                 }
250         }
251 }
252
253 static void __init l2cr_init(void)
254 {
255         /* Checks "l2cr-value" property in the registry */
256         if (cpu_has_feature(CPU_FTR_L2CR)) {
257                 struct device_node *np = find_devices("cpus");
258                 if (np == 0)
259                         np = find_type_devices("cpu");
260                 if (np != 0) {
261                         unsigned int *l2cr = (unsigned int *)
262                                 get_property(np, "l2cr-value", NULL);
263                         if (l2cr != 0) {
264                                 ppc_override_l2cr = 1;
265                                 ppc_override_l2cr_value = *l2cr;
266                                 _set_L2CR(0);
267                                 _set_L2CR(ppc_override_l2cr_value);
268                         }
269                 }
270         }
271
272         if (ppc_override_l2cr)
273                 printk(KERN_INFO "L2CR overridden (0x%x), "
274                        "backside cache is %s\n",
275                        ppc_override_l2cr_value,
276                        (ppc_override_l2cr_value & 0x80000000)
277                                 ? "enabled" : "disabled");
278 }
279 #endif
280
281 void __init pmac_setup_arch(void)
282 {
283         struct device_node *cpu, *ic;
284         int *fp;
285         unsigned long pvr;
286
287         pvr = PVR_VER(mfspr(SPRN_PVR));
288
289         /* Set loops_per_jiffy to a half-way reasonable value,
290            for use until calibrate_delay gets called. */
291         loops_per_jiffy = 50000000 / HZ;
292         cpu = of_find_node_by_type(NULL, "cpu");
293         if (cpu != NULL) {
294                 fp = (int *) get_property(cpu, "clock-frequency", NULL);
295                 if (fp != NULL) {
296                         if (pvr >= 0x30 && pvr < 0x80)
297                                 /* PPC970 etc. */
298                                 loops_per_jiffy = *fp / (3 * HZ);
299                         else if (pvr == 4 || pvr >= 8)
300                                 /* 604, G3, G4 etc. */
301                                 loops_per_jiffy = *fp / HZ;
302                         else
303                                 /* 601, 603, etc. */
304                                 loops_per_jiffy = *fp / (2 * HZ);
305                 }
306                 of_node_put(cpu);
307         }
308
309         /* See if newworld or oldworld */
310         for (ic = NULL; (ic = of_find_all_nodes(ic)) != NULL; )
311                 if (get_property(ic, "interrupt-controller", NULL))
312                         break;
313         pmac_newworld = (ic != NULL);
314         if (ic)
315                 of_node_put(ic);
316
317         /* Lookup PCI hosts */
318         pmac_pci_init();
319
320 #ifdef CONFIG_PPC32
321         ohare_init();
322         l2cr_init();
323 #endif /* CONFIG_PPC32 */
324
325 #ifdef CONFIG_PPC64
326         /* Probe motherboard chipset */
327         /* this is done earlier in setup_arch for 32-bit */
328         pmac_feature_init();
329
330         /* We can NAP */
331         powersave_nap = 1;
332         printk(KERN_INFO "Using native/NAP idle loop\n");
333 #endif
334
335 #ifdef CONFIG_KGDB
336         zs_kgdb_hook(0);
337 #endif
338
339         find_via_cuda();
340         find_via_pmu();
341         smu_init();
342
343 #if defined(CONFIG_NVRAM) || defined(CONFIG_PPC64)
344         pmac_nvram_init();
345 #endif
346
347 #ifdef CONFIG_PPC32
348 #ifdef CONFIG_BLK_DEV_INITRD
349         if (initrd_start)
350                 ROOT_DEV = Root_RAM0;
351         else
352 #endif
353                 ROOT_DEV = DEFAULT_ROOT_DEVICE;
354 #endif
355
356 #ifdef CONFIG_SMP
357         /* Check for Core99 */
358         if (find_devices("uni-n") || find_devices("u3"))
359                 smp_ops = &core99_smp_ops;
360 #ifdef CONFIG_PPC32
361         else
362                 smp_ops = &psurge_smp_ops;
363 #endif
364 #endif /* CONFIG_SMP */
365 }
366
367 char *bootpath;
368 char *bootdevice;
369 void *boot_host;
370 int boot_target;
371 int boot_part;
372 extern dev_t boot_dev;
373
374 #ifdef CONFIG_SCSI
375 void __init note_scsi_host(struct device_node *node, void *host)
376 {
377         int l;
378         char *p;
379
380         l = strlen(node->full_name);
381         if (bootpath != NULL && bootdevice != NULL
382             && strncmp(node->full_name, bootdevice, l) == 0
383             && (bootdevice[l] == '/' || bootdevice[l] == 0)) {
384                 boot_host = host;
385                 /*
386                  * There's a bug in OF 1.0.5.  (Why am I not surprised.)
387                  * If you pass a path like scsi/sd@1:0 to canon, it returns
388                  * something like /bandit@F2000000/gc@10/53c94@10000/sd@0,0
389                  * That is, the scsi target number doesn't get preserved.
390                  * So we pick the target number out of bootpath and use that.
391                  */
392                 p = strstr(bootpath, "/sd@");
393                 if (p != NULL) {
394                         p += 4;
395                         boot_target = simple_strtoul(p, NULL, 10);
396                         p = strchr(p, ':');
397                         if (p != NULL)
398                                 boot_part = simple_strtoul(p + 1, NULL, 10);
399                 }
400         }
401 }
402 EXPORT_SYMBOL(note_scsi_host);
403 #endif
404
405 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
406 static dev_t __init find_ide_boot(void)
407 {
408         char *p;
409         int n;
410         dev_t __init pmac_find_ide_boot(char *bootdevice, int n);
411
412         if (bootdevice == NULL)
413                 return 0;
414         p = strrchr(bootdevice, '/');
415         if (p == NULL)
416                 return 0;
417         n = p - bootdevice;
418
419         return pmac_find_ide_boot(bootdevice, n);
420 }
421 #endif /* CONFIG_BLK_DEV_IDE && CONFIG_BLK_DEV_IDE_PMAC */
422
423 static void __init find_boot_device(void)
424 {
425 #if defined(CONFIG_BLK_DEV_IDE) && defined(CONFIG_BLK_DEV_IDE_PMAC)
426         boot_dev = find_ide_boot();
427 #endif
428 }
429
430 /* TODO: Merge the suspend-to-ram with the common code !!!
431  * currently, this is a stub implementation for suspend-to-disk
432  * only
433  */
434
435 #ifdef CONFIG_SOFTWARE_SUSPEND
436
437 static int pmac_pm_prepare(suspend_state_t state)
438 {
439         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
440
441         return 0;
442 }
443
444 static int pmac_pm_enter(suspend_state_t state)
445 {
446         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
447
448         /* Giveup the lazy FPU & vec so we don't have to back them
449          * up from the low level code
450          */
451         enable_kernel_fp();
452
453 #ifdef CONFIG_ALTIVEC
454         if (cur_cpu_spec->cpu_features & CPU_FTR_ALTIVEC)
455                 enable_kernel_altivec();
456 #endif /* CONFIG_ALTIVEC */
457
458         return 0;
459 }
460
461 static int pmac_pm_finish(suspend_state_t state)
462 {
463         printk(KERN_DEBUG "%s(%d)\n", __FUNCTION__, state);
464
465         /* Restore userland MMU context */
466         set_context(current->active_mm->context, current->active_mm->pgd);
467
468         return 0;
469 }
470
471 static struct pm_ops pmac_pm_ops = {
472         .pm_disk_mode   = PM_DISK_SHUTDOWN,
473         .prepare        = pmac_pm_prepare,
474         .enter          = pmac_pm_enter,
475         .finish         = pmac_pm_finish,
476 };
477
478 #endif /* CONFIG_SOFTWARE_SUSPEND */
479
480 static int initializing = 1;
481
482 static int pmac_late_init(void)
483 {
484         initializing = 0;
485 #ifdef CONFIG_SOFTWARE_SUSPEND
486         pm_set_ops(&pmac_pm_ops);
487 #endif /* CONFIG_SOFTWARE_SUSPEND */
488         return 0;
489 }
490
491 late_initcall(pmac_late_init);
492
493 /* can't be __init - can be called whenever a disk is first accessed */
494 void note_bootable_part(dev_t dev, int part, int goodness)
495 {
496         static int found_boot = 0;
497         char *p;
498
499         if (!initializing)
500                 return;
501         if ((goodness <= current_root_goodness) &&
502             ROOT_DEV != DEFAULT_ROOT_DEVICE)
503                 return;
504         p = strstr(saved_command_line, "root=");
505         if (p != NULL && (p == saved_command_line || p[-1] == ' '))
506                 return;
507
508         if (!found_boot) {
509                 find_boot_device();
510                 found_boot = 1;
511         }
512         if (!boot_dev || dev == boot_dev) {
513                 ROOT_DEV = dev + part;
514                 boot_dev = 0;
515                 current_root_goodness = goodness;
516         }
517 }
518
519 #ifdef CONFIG_ADB_CUDA
520 static void cuda_restart(void)
521 {
522         struct adb_request req;
523
524         cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM);
525         for (;;)
526                 cuda_poll();
527 }
528
529 static void cuda_shutdown(void)
530 {
531         struct adb_request req;
532
533         cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN);
534         for (;;)
535                 cuda_poll();
536 }
537
538 #else
539 #define cuda_restart()
540 #define cuda_shutdown()
541 #endif
542
543 #ifndef CONFIG_ADB_PMU
544 #define pmu_restart()
545 #define pmu_shutdown()
546 #endif
547
548 #ifndef CONFIG_PMAC_SMU
549 #define smu_restart()
550 #define smu_shutdown()
551 #endif
552
553 static void pmac_restart(char *cmd)
554 {
555         switch (sys_ctrler) {
556         case SYS_CTRLER_CUDA:
557                 cuda_restart();
558                 break;
559         case SYS_CTRLER_PMU:
560                 pmu_restart();
561                 break;
562         case SYS_CTRLER_SMU:
563                 smu_restart();
564                 break;
565         default: ;
566         }
567 }
568
569 static void pmac_power_off(void)
570 {
571         switch (sys_ctrler) {
572         case SYS_CTRLER_CUDA:
573                 cuda_shutdown();
574                 break;
575         case SYS_CTRLER_PMU:
576                 pmu_shutdown();
577                 break;
578         case SYS_CTRLER_SMU:
579                 smu_shutdown();
580                 break;
581         default: ;
582         }
583 }
584
585 static void
586 pmac_halt(void)
587 {
588         pmac_power_off();
589 }
590
591 #ifdef CONFIG_PPC32
592 void __init pmac_init(void)
593 {
594         /* isa_io_base gets set in pmac_pci_init */
595         isa_mem_base = PMAC_ISA_MEM_BASE;
596         pci_dram_offset = PMAC_PCI_DRAM_OFFSET;
597         ISA_DMA_THRESHOLD = ~0L;
598         DMA_MODE_READ = 1;
599         DMA_MODE_WRITE = 2;
600
601         ppc_md = pmac_md;
602
603 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
604 #ifdef CONFIG_BLK_DEV_IDE_PMAC
605         ppc_ide_md.ide_init_hwif        = pmac_ide_init_hwif_ports;
606         ppc_ide_md.default_io_base      = pmac_ide_get_base;
607 #endif /* CONFIG_BLK_DEV_IDE_PMAC */
608 #endif /* defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE) */
609
610         if (ppc_md.progress) ppc_md.progress("pmac_init(): exit", 0);
611
612 }
613 #endif
614
615 /* 
616  * Early initialization.
617  */
618 static void __init pmac_init_early(void)
619 {
620 #ifdef CONFIG_PPC64
621         /* Initialize hash table, from now on, we can take hash faults
622          * and call ioremap
623          */
624         hpte_init_native();
625
626         /* Init SCC */
627         if (strstr(cmd_line, "sccdbg")) {
628                 sccdbg = 1;
629                 udbg_init_scc(NULL);
630         }
631
632         /* Setup interrupt mapping options */
633         ppc64_interrupt_controller = IC_OPEN_PIC;
634
635         iommu_init_early_u3();
636 #endif
637 }
638
639 static void __init pmac_progress(char *s, unsigned short hex)
640 {
641 #ifdef CONFIG_PPC64
642         if (sccdbg) {
643                 udbg_puts(s);
644                 udbg_puts("\n");
645                 return;
646         }
647 #endif
648 #ifdef CONFIG_BOOTX_TEXT
649         if (boot_text_mapped) {
650                 btext_drawstring(s);
651                 btext_drawchar('\n');
652         }
653 #endif /* CONFIG_BOOTX_TEXT */
654 }
655
656 /*
657  * pmac has no legacy IO, anything calling this function has to
658  * fail or bad things will happen
659  */
660 static int pmac_check_legacy_ioport(unsigned int baseport)
661 {
662         return -ENODEV;
663 }
664
665 static int __init pmac_declare_of_platform_devices(void)
666 {
667         struct device_node *np, *npp;
668
669         np = find_devices("uni-n");
670         if (np) {
671                 for (np = np->child; np != NULL; np = np->sibling)
672                         if (strncmp(np->name, "i2c", 3) == 0) {
673                                 of_platform_device_create(np, "uni-n-i2c",
674                                                           NULL);
675                                 break;
676                         }
677         }
678         np = find_devices("valkyrie");
679         if (np)
680                 of_platform_device_create(np, "valkyrie", NULL);
681         np = find_devices("platinum");
682         if (np)
683                 of_platform_device_create(np, "platinum", NULL);
684
685         npp = of_find_node_by_name(NULL, "u3");
686         if (npp) {
687                 for (np = NULL; (np = of_get_next_child(npp, np)) != NULL;) {
688                         if (strncmp(np->name, "i2c", 3) == 0) {
689                                 of_platform_device_create(np, "u3-i2c", NULL);
690                                 of_node_put(np);
691                                 break;
692                         }
693                 }
694                 of_node_put(npp);
695         }
696         np = of_find_node_by_type(NULL, "smu");
697         if (np) {
698                 of_platform_device_create(np, "smu", NULL);
699                 of_node_put(np);
700         }
701
702         return 0;
703 }
704
705 device_initcall(pmac_declare_of_platform_devices);
706
707 /*
708  * Called very early, MMU is off, device-tree isn't unflattened
709  */
710 static int __init pmac_probe(int platform)
711 {
712 #ifdef CONFIG_PPC64
713         if (platform != PLATFORM_POWERMAC)
714                 return 0;
715
716         /*
717          * On U3, the DART (iommu) must be allocated now since it
718          * has an impact on htab_initialize (due to the large page it
719          * occupies having to be broken up so the DART itself is not
720          * part of the cacheable linar mapping
721          */
722         alloc_u3_dart_table();
723 #endif
724
725 #ifdef CONFIG_PMAC_SMU
726         /*
727          * SMU based G5s need some memory below 2Gb, at least the current
728          * driver needs that. We have to allocate it now. We allocate 4k
729          * (1 small page) for now.
730          */
731         smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL);
732 #endif /* CONFIG_PMAC_SMU */
733
734         return 1;
735 }
736
737 #ifdef CONFIG_PPC64
738 static int pmac_probe_mode(struct pci_bus *bus)
739 {
740         struct device_node *node = bus->sysdata;
741
742         /* We need to use normal PCI probing for the AGP bus,
743            since the device for the AGP bridge isn't in the tree. */
744         if (bus->self == NULL && device_is_compatible(node, "u3-agp"))
745                 return PCI_PROBE_NORMAL;
746
747         return PCI_PROBE_DEVTREE;
748 }
749 #endif
750
751 struct machdep_calls __initdata pmac_md = {
752 #if defined(CONFIG_HOTPLUG_CPU) && defined(CONFIG_PPC64)
753         .cpu_die                = generic_mach_cpu_die,
754 #endif
755         .probe                  = pmac_probe,
756         .setup_arch             = pmac_setup_arch,
757         .init_early             = pmac_init_early,
758         .show_cpuinfo           = pmac_show_cpuinfo,
759         .init_IRQ               = pmac_pic_init,
760         .get_irq                = mpic_get_irq, /* changed later */
761         .pcibios_fixup          = pmac_pcibios_fixup,
762         .restart                = pmac_restart,
763         .power_off              = pmac_power_off,
764         .halt                   = pmac_halt,
765         .time_init              = pmac_time_init,
766         .get_boot_time          = pmac_get_boot_time,
767         .set_rtc_time           = pmac_set_rtc_time,
768         .get_rtc_time           = pmac_get_rtc_time,
769         .calibrate_decr         = pmac_calibrate_decr,
770         .feature_call           = pmac_do_feature_call,
771         .check_legacy_ioport    = pmac_check_legacy_ioport,
772         .progress               = pmac_progress,
773 #ifdef CONFIG_PPC64
774         .pci_probe_mode         = pmac_probe_mode,
775         .idle_loop              = native_idle,
776         .enable_pmcs            = power4_enable_pmcs,
777 #ifdef CONFIG_KEXEC
778         .machine_kexec          = default_machine_kexec,
779         .machine_kexec_prepare  = default_machine_kexec_prepare,
780 #endif
781 #endif /* CONFIG_PPC64 */
782 #ifdef CONFIG_PPC32
783         .pcibios_enable_device_hook = pmac_pci_enable_device_hook,
784         .pcibios_after_init     = pmac_pcibios_after_init,
785         .phys_mem_access_prot   = pci_phys_mem_access_prot,
786 #endif
787 };