Merge branch 'mv-merge'
[linux-2.6] / arch / ia64 / sn / kernel / io_init.c
1 /*
2  * This file is subject to the terms and conditions of the GNU General Public
3  * License.  See the file "COPYING" in the main directory of this archive
4  * for more details.
5  *
6  * Copyright (C) 1992 - 1997, 2000-2005 Silicon Graphics, Inc. All rights reserved.
7  */
8
9 #include <linux/bootmem.h>
10 #include <linux/nodemask.h>
11 #include <asm/sn/types.h>
12 #include <asm/sn/addrs.h>
13 #include <asm/sn/sn_feature_sets.h>
14 #include <asm/sn/geo.h>
15 #include <asm/sn/io.h>
16 #include <asm/sn/l1.h>
17 #include <asm/sn/module.h>
18 #include <asm/sn/pcibr_provider.h>
19 #include <asm/sn/pcibus_provider_defs.h>
20 #include <asm/sn/pcidev.h>
21 #include <asm/sn/simulator.h>
22 #include <asm/sn/sn_sal.h>
23 #include <asm/sn/tioca_provider.h>
24 #include <asm/sn/tioce_provider.h>
25 #include "xtalk/hubdev.h"
26 #include "xtalk/xwidgetdev.h"
27
28
29 extern void sn_init_cpei_timer(void);
30 extern void register_sn_procfs(void);
31
32 static struct list_head sn_sysdata_list;
33
34 /* sysdata list struct */
35 struct sysdata_el {
36         struct list_head entry;
37         void *sysdata;
38 };
39
40 struct slab_info {
41         struct hubdev_info hubdev;
42 };
43
44 struct brick {
45         moduleid_t id;          /* Module ID of this module        */
46         struct slab_info slab_info[MAX_SLABS + 1];
47 };
48
49 int sn_ioif_inited;             /* SN I/O infrastructure initialized? */
50
51 struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES];       /* indexed by asic type */
52
53 static int max_segment_number;           /* Default highest segment number */
54 static int max_pcibus_number = 255;     /* Default highest pci bus number */
55
56 /*
57  * Hooks and struct for unsupported pci providers
58  */
59
60 static dma_addr_t
61 sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size)
62 {
63         return 0;
64 }
65
66 static void
67 sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
68 {
69         return;
70 }
71
72 static void *
73 sn_default_pci_bus_fixup(struct pcibus_bussoft *soft, struct pci_controller *controller)
74 {
75         return NULL;
76 }
77
78 static struct sn_pcibus_provider sn_pci_default_provider = {
79         .dma_map = sn_default_pci_map,
80         .dma_map_consistent = sn_default_pci_map,
81         .dma_unmap = sn_default_pci_unmap,
82         .bus_fixup = sn_default_pci_bus_fixup,
83 };
84
85 /*
86  * Retrieve the DMA Flush List given nasid, widget, and device.
87  * This list is needed to implement the WAR - Flush DMA data on PIO Reads.
88  */
89 static inline u64
90 sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
91                              u64 address)
92 {
93         struct ia64_sal_retval ret_stuff;
94         ret_stuff.status = 0;
95         ret_stuff.v0 = 0;
96
97         SAL_CALL_NOLOCK(ret_stuff,
98                         (u64) SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST,
99                         (u64) nasid, (u64) widget_num,
100                         (u64) device_num, (u64) address, 0, 0, 0);
101         return ret_stuff.status;
102 }
103
104 /*
105  * Retrieve the hub device info structure for the given nasid.
106  */
107 static inline u64 sal_get_hubdev_info(u64 handle, u64 address)
108 {
109         struct ia64_sal_retval ret_stuff;
110         ret_stuff.status = 0;
111         ret_stuff.v0 = 0;
112
113         SAL_CALL_NOLOCK(ret_stuff,
114                         (u64) SN_SAL_IOIF_GET_HUBDEV_INFO,
115                         (u64) handle, (u64) address, 0, 0, 0, 0, 0);
116         return ret_stuff.v0;
117 }
118
119 /*
120  * Retrieve the pci bus information given the bus number.
121  */
122 static inline u64 sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
123 {
124         struct ia64_sal_retval ret_stuff;
125         ret_stuff.status = 0;
126         ret_stuff.v0 = 0;
127
128         SAL_CALL_NOLOCK(ret_stuff,
129                         (u64) SN_SAL_IOIF_GET_PCIBUS_INFO,
130                         (u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0);
131         return ret_stuff.v0;
132 }
133
134 /*
135  * Retrieve the pci device information given the bus and device|function number.
136  */
137 static inline u64
138 sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
139                     u64 sn_irq_info)
140 {
141         struct ia64_sal_retval ret_stuff;
142         ret_stuff.status = 0;
143         ret_stuff.v0 = 0;
144
145         SAL_CALL_NOLOCK(ret_stuff,
146                         (u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
147                         (u64) segment, (u64) bus_number, (u64) devfn,
148                         (u64) pci_dev,
149                         sn_irq_info, 0, 0);
150         return ret_stuff.v0;
151 }
152
153 /*
154  * sn_pcidev_info_get() - Retrieve the pcidev_info struct for the specified
155  *                        device.
156  */
157 inline struct pcidev_info *
158 sn_pcidev_info_get(struct pci_dev *dev)
159 {
160         struct pcidev_info *pcidev;
161
162         list_for_each_entry(pcidev,
163                             &(SN_PCI_CONTROLLER(dev)->pcidev_info), pdi_list) {
164                 if (pcidev->pdi_linux_pcidev == dev) {
165                         return pcidev;
166                 }
167         }
168         return NULL;
169 }
170
171 /* Older PROM flush WAR
172  *
173  * 01/16/06 -- This war will be in place until a new official PROM is released.
174  * Additionally note that the struct sn_flush_device_war also has to be
175  * removed from arch/ia64/sn/include/xtalk/hubdev.h
176  */
177 static u8 war_implemented = 0;
178
179 static s64 sn_device_fixup_war(u64 nasid, u64 widget, int device,
180                                struct sn_flush_device_common *common)
181 {
182         struct sn_flush_device_war *war_list;
183         struct sn_flush_device_war *dev_entry;
184         struct ia64_sal_retval isrv = {0,0,0,0};
185
186         if (!war_implemented) {
187                 printk(KERN_WARNING "PROM version < 4.50 -- implementing old "
188                        "PROM flush WAR\n");
189                 war_implemented = 1;
190         }
191
192         war_list = kzalloc(DEV_PER_WIDGET * sizeof(*war_list), GFP_KERNEL);
193         if (!war_list)
194                 BUG();
195
196         SAL_CALL_NOLOCK(isrv, SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
197                         nasid, widget, __pa(war_list), 0, 0, 0 ,0);
198         if (isrv.status)
199                 panic("sn_device_fixup_war failed: %s\n",
200                       ia64_sal_strerror(isrv.status));
201
202         dev_entry = war_list + device;
203         memcpy(common,dev_entry, sizeof(*common));
204         kfree(war_list);
205
206         return isrv.status;
207 }
208
209 /*
210  * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
211  *      each node in the system.
212  */
213 static void __init sn_fixup_ionodes(void)
214 {
215         struct sn_flush_device_kernel *sn_flush_device_kernel;
216         struct sn_flush_device_kernel *dev_entry;
217         struct hubdev_info *hubdev;
218         u64 status;
219         u64 nasid;
220         int i, widget, device, size;
221
222         /*
223          * Get SGI Specific HUB chipset information.
224          * Inform Prom that this kernel can support domain bus numbering.
225          */
226         for (i = 0; i < num_cnodes; i++) {
227                 hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
228                 nasid = cnodeid_to_nasid(i);
229                 hubdev->max_segment_number = 0xffffffff;
230                 hubdev->max_pcibus_number = 0xff;
231                 status = sal_get_hubdev_info(nasid, (u64) __pa(hubdev));
232                 if (status)
233                         continue;
234
235                 /* Save the largest Domain and pcibus numbers found. */
236                 if (hubdev->max_segment_number) {
237                         /*
238                          * Dealing with a Prom that supports segments.
239                          */
240                         max_segment_number = hubdev->max_segment_number;
241                         max_pcibus_number = hubdev->max_pcibus_number;
242                 }
243
244                 /* Attach the error interrupt handlers */
245                 if (nasid & 1)
246                         ice_error_init(hubdev);
247                 else
248                         hub_error_init(hubdev);
249
250                 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
251                         hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
252
253                 if (!hubdev->hdi_flush_nasid_list.widget_p)
254                         continue;
255
256                 size = (HUB_WIDGET_ID_MAX + 1) *
257                         sizeof(struct sn_flush_device_kernel *);
258                 hubdev->hdi_flush_nasid_list.widget_p =
259                         kzalloc(size, GFP_KERNEL);
260                 if (!hubdev->hdi_flush_nasid_list.widget_p)
261                         BUG();
262
263                 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
264                         size = DEV_PER_WIDGET *
265                                 sizeof(struct sn_flush_device_kernel);
266                         sn_flush_device_kernel = kzalloc(size, GFP_KERNEL);
267                         if (!sn_flush_device_kernel)
268                                 BUG();
269
270                         dev_entry = sn_flush_device_kernel;
271                         for (device = 0; device < DEV_PER_WIDGET;
272                              device++,dev_entry++) {
273                                 size = sizeof(struct sn_flush_device_common);
274                                 dev_entry->common = kzalloc(size, GFP_KERNEL);
275                                 if (!dev_entry->common)
276                                         BUG();
277
278                                 if (sn_prom_feature_available(
279                                                        PRF_DEVICE_FLUSH_LIST))
280                                         status = sal_get_device_dmaflush_list(
281                                                      nasid, widget, device,
282                                                      (u64)(dev_entry->common));
283                                 else
284                                         status = sn_device_fixup_war(nasid,
285                                                      widget, device,
286                                                      dev_entry->common);
287                                 if (status != SALRET_OK)
288                                         panic("SAL call failed: %s\n",
289                                               ia64_sal_strerror(status));
290
291                                 spin_lock_init(&dev_entry->sfdl_flush_lock);
292                         }
293
294                         if (sn_flush_device_kernel)
295                                 hubdev->hdi_flush_nasid_list.widget_p[widget] =
296                                                        sn_flush_device_kernel;
297                 }
298         }
299 }
300
301 /*
302  * sn_pci_window_fixup() - Create a pci_window for each device resource.
303  *                         Until ACPI support is added, we need this code
304  *                         to setup pci_windows for use by
305  *                         pcibios_bus_to_resource(),
306  *                         pcibios_resource_to_bus(), etc.
307  */
308 static void
309 sn_pci_window_fixup(struct pci_dev *dev, unsigned int count,
310                     s64 * pci_addrs)
311 {
312         struct pci_controller *controller = PCI_CONTROLLER(dev->bus);
313         unsigned int i;
314         unsigned int idx;
315         unsigned int new_count;
316         struct pci_window *new_window;
317
318         if (count == 0)
319                 return;
320         idx = controller->windows;
321         new_count = controller->windows + count;
322         new_window = kcalloc(new_count, sizeof(struct pci_window), GFP_KERNEL);
323         if (new_window == NULL)
324                 BUG();
325         if (controller->window) {
326                 memcpy(new_window, controller->window,
327                        sizeof(struct pci_window) * controller->windows);
328                 kfree(controller->window);
329         }
330
331         /* Setup a pci_window for each device resource. */
332         for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
333                 if (pci_addrs[i] == -1)
334                         continue;
335
336                 new_window[idx].offset = dev->resource[i].start - pci_addrs[i];
337                 new_window[idx].resource = dev->resource[i];
338                 idx++;
339         }
340
341         controller->windows = new_count;
342         controller->window = new_window;
343 }
344
345 void sn_pci_unfixup_slot(struct pci_dev *dev)
346 {
347         struct pci_dev *host_pci_dev = SN_PCIDEV_INFO(dev)->host_pci_dev;
348
349         sn_irq_unfixup(dev);
350         pci_dev_put(host_pci_dev);
351         pci_dev_put(dev);
352 }
353
354 /*
355  * sn_pci_fixup_slot() - This routine sets up a slot's resources
356  * consistent with the Linux PCI abstraction layer.  Resources acquired
357  * from our PCI provider include PIO maps to BAR space and interrupt
358  * objects.
359  */
360 void sn_pci_fixup_slot(struct pci_dev *dev)
361 {
362         unsigned int count = 0;
363         int idx;
364         int segment = pci_domain_nr(dev->bus);
365         int status = 0;
366         struct pcibus_bussoft *bs;
367         struct pci_bus *host_pci_bus;
368         struct pci_dev *host_pci_dev;
369         struct pcidev_info *pcidev_info;
370         s64 pci_addrs[PCI_ROM_RESOURCE + 1];
371         struct sn_irq_info *sn_irq_info;
372         unsigned long size;
373         unsigned int bus_no, devfn;
374
375         pci_dev_get(dev); /* for the sysdata pointer */
376         pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
377         if (!pcidev_info)
378                 BUG();          /* Cannot afford to run out of memory */
379
380         sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
381         if (!sn_irq_info)
382                 BUG();          /* Cannot afford to run out of memory */
383
384         /* Call to retrieve pci device information needed by kernel. */
385         status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number, 
386                                      dev->devfn,
387                                      (u64) __pa(pcidev_info),
388                                      (u64) __pa(sn_irq_info));
389         if (status)
390                 BUG(); /* Cannot get platform pci device information */
391
392         /* Add pcidev_info to list in sn_pci_controller struct */
393         list_add_tail(&pcidev_info->pdi_list,
394                       &(SN_PCI_CONTROLLER(dev->bus)->pcidev_info));
395
396         /* Copy over PIO Mapped Addresses */
397         for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
398                 unsigned long start, end, addr;
399
400                 if (!pcidev_info->pdi_pio_mapped_addr[idx]) {
401                         pci_addrs[idx] = -1;
402                         continue;
403                 }
404
405                 start = dev->resource[idx].start;
406                 end = dev->resource[idx].end;
407                 size = end - start;
408                 if (size == 0) {
409                         pci_addrs[idx] = -1;
410                         continue;
411                 }
412                 pci_addrs[idx] = start;
413                 count++;
414                 addr = pcidev_info->pdi_pio_mapped_addr[idx];
415                 addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
416                 dev->resource[idx].start = addr;
417                 dev->resource[idx].end = addr + size;
418                 if (dev->resource[idx].flags & IORESOURCE_IO)
419                         dev->resource[idx].parent = &ioport_resource;
420                 else
421                         dev->resource[idx].parent = &iomem_resource;
422         }
423         /* Create a pci_window in the pci_controller struct for
424          * each device resource.
425          */
426         if (count > 0)
427                 sn_pci_window_fixup(dev, count, pci_addrs);
428
429         /*
430          * Using the PROMs values for the PCI host bus, get the Linux
431          * PCI host_pci_dev struct and set up host bus linkages
432          */
433
434         bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff;
435         devfn = pcidev_info->pdi_slot_host_handle & 0xffffffff;
436         host_pci_bus = pci_find_bus(segment, bus_no);
437         host_pci_dev = pci_get_slot(host_pci_bus, devfn);
438
439         pcidev_info->host_pci_dev = host_pci_dev;
440         pcidev_info->pdi_linux_pcidev = dev;
441         pcidev_info->pdi_host_pcidev_info = SN_PCIDEV_INFO(host_pci_dev);
442         bs = SN_PCIBUS_BUSSOFT(dev->bus);
443         pcidev_info->pdi_pcibus_info = bs;
444
445         if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
446                 SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
447         } else {
448                 SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
449         }
450
451         /* Only set up IRQ stuff if this device has a host bus context */
452         if (bs && sn_irq_info->irq_irq) {
453                 pcidev_info->pdi_sn_irq_info = sn_irq_info;
454                 dev->irq = pcidev_info->pdi_sn_irq_info->irq_irq;
455                 sn_irq_fixup(dev, sn_irq_info);
456         } else {
457                 pcidev_info->pdi_sn_irq_info = NULL;
458                 kfree(sn_irq_info);
459         }
460
461         /*
462          * MSI currently not supported on altix.  Remove this when
463          * the MSI abstraction patches are integrated into the kernel
464          * (sometime after 2.6.16 releases)
465          */
466         dev->no_msi = 1;
467 }
468
469 /*
470  * sn_pci_controller_fixup() - This routine sets up a bus's resources
471  * consistent with the Linux PCI abstraction layer.
472  */
473 void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
474 {
475         int status;
476         int nasid, cnode;
477         struct pci_controller *controller;
478         struct sn_pci_controller *sn_controller;
479         struct pcibus_bussoft *prom_bussoft_ptr;
480         struct hubdev_info *hubdev_info;
481         void *provider_soft;
482         struct sn_pcibus_provider *provider;
483
484         status = sal_get_pcibus_info((u64) segment, (u64) busnum,
485                                      (u64) ia64_tpa(&prom_bussoft_ptr));
486         if (status > 0)
487                 return;         /*bus # does not exist */
488         prom_bussoft_ptr = __va(prom_bussoft_ptr);
489
490         /* Allocate a sn_pci_controller, which has a pci_controller struct
491          * as the first member.
492          */
493         sn_controller = kzalloc(sizeof(struct sn_pci_controller), GFP_KERNEL);
494         if (!sn_controller)
495                 BUG();
496         INIT_LIST_HEAD(&sn_controller->pcidev_info);
497         controller = &sn_controller->pci_controller;
498         controller->segment = segment;
499
500         if (bus == NULL) {
501                 bus = pci_scan_bus(busnum, &pci_root_ops, controller);
502                 if (bus == NULL)
503                         goto error_return; /* error, or bus already scanned */
504                 bus->sysdata = NULL;
505         }
506
507         if (bus->sysdata)
508                 goto error_return; /* sysdata already alloc'd */
509
510         /*
511          * Per-provider fixup.  Copies the contents from prom to local
512          * area and links SN_PCIBUS_BUSSOFT().
513          */
514
515         if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES)
516                 goto error_return; /* unsupported asic type */
517
518         if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)
519                 goto error_return; /* no further fixup necessary */
520
521         provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
522         if (provider == NULL)
523                 goto error_return; /* no provider registerd for this asic */
524
525         bus->sysdata = controller;
526         if (provider->bus_fixup)
527                 provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr, controller);
528         else
529                 provider_soft = NULL;
530
531         if (provider_soft == NULL) {
532                 /* fixup failed or not applicable */
533                 bus->sysdata = NULL;
534                 goto error_return;
535         }
536
537         /*
538          * Setup pci_windows for legacy IO and MEM space.
539          * (Temporary until ACPI support is in place.)
540          */
541         controller->window = kcalloc(2, sizeof(struct pci_window), GFP_KERNEL);
542         if (controller->window == NULL)
543                 BUG();
544         controller->window[0].offset = prom_bussoft_ptr->bs_legacy_io;
545         controller->window[0].resource.name = "legacy_io";
546         controller->window[0].resource.flags = IORESOURCE_IO;
547         controller->window[0].resource.start = prom_bussoft_ptr->bs_legacy_io;
548         controller->window[0].resource.end =
549             controller->window[0].resource.start + 0xffff;
550         controller->window[0].resource.parent = &ioport_resource;
551         controller->window[1].offset = prom_bussoft_ptr->bs_legacy_mem;
552         controller->window[1].resource.name = "legacy_mem";
553         controller->window[1].resource.flags = IORESOURCE_MEM;
554         controller->window[1].resource.start = prom_bussoft_ptr->bs_legacy_mem;
555         controller->window[1].resource.end =
556             controller->window[1].resource.start + (1024 * 1024) - 1;
557         controller->window[1].resource.parent = &iomem_resource;
558         controller->windows = 2;
559
560         /*
561          * Generic bus fixup goes here.  Don't reference prom_bussoft_ptr
562          * after this point.
563          */
564
565         PCI_CONTROLLER(bus)->platform_data = provider_soft;
566         nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
567         cnode = nasid_to_cnodeid(nasid);
568         hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
569         SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
570             &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
571
572         /*
573          * If the node information we obtained during the fixup phase is invalid
574          * then set controller->node to -1 (undetermined)
575          */
576         if (controller->node >= num_online_nodes()) {
577                 struct pcibus_bussoft *b = SN_PCIBUS_BUSSOFT(bus);
578
579                 printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%u"
580                                     "L_IO=%lx L_MEM=%lx BASE=%lx\n",
581                         b->bs_asic_type, b->bs_xid, b->bs_persist_busnum,
582                         b->bs_legacy_io, b->bs_legacy_mem, b->bs_base);
583                 printk(KERN_WARNING "on node %d but only %d nodes online."
584                         "Association set to undetermined.\n",
585                         controller->node, num_online_nodes());
586                 controller->node = -1;
587         }
588         return;
589
590 error_return:
591
592         kfree(sn_controller);
593         return;
594 }
595
596 void sn_bus_store_sysdata(struct pci_dev *dev)
597 {
598         struct sysdata_el *element;
599
600         element = kzalloc(sizeof(struct sysdata_el), GFP_KERNEL);
601         if (!element) {
602                 dev_dbg(dev, "%s: out of memory!\n", __FUNCTION__);
603                 return;
604         }
605         element->sysdata = SN_PCIDEV_INFO(dev);
606         list_add(&element->entry, &sn_sysdata_list);
607 }
608
609 void sn_bus_free_sysdata(void)
610 {
611         struct sysdata_el *element;
612         struct list_head *list, *safe;
613
614         list_for_each_safe(list, safe, &sn_sysdata_list) {
615                 element = list_entry(list, struct sysdata_el, entry);
616                 list_del(&element->entry);
617                 list_del(&(((struct pcidev_info *)
618                              (element->sysdata))->pdi_list));
619                 kfree(element->sysdata);
620                 kfree(element);
621         }
622         return;
623 }
624
625 /*
626  * Ugly hack to get PCI setup until we have a proper ACPI namespace.
627  */
628
629 #define PCI_BUSES_TO_SCAN 256
630
631 static int __init sn_pci_init(void)
632 {
633         int i, j;
634         struct pci_dev *pci_dev = NULL;
635
636         if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
637                 return 0;
638
639         /*
640          * prime sn_pci_provider[].  Individial provider init routines will
641          * override their respective default entries.
642          */
643
644         for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
645                 sn_pci_provider[i] = &sn_pci_default_provider;
646
647         pcibr_init_provider();
648         tioca_init_provider();
649         tioce_init_provider();
650
651         /*
652          * This is needed to avoid bounce limit checks in the blk layer
653          */
654         ia64_max_iommu_merge_mask = ~PAGE_MASK;
655         sn_fixup_ionodes();
656         sn_irq_lh_init();
657         INIT_LIST_HEAD(&sn_sysdata_list);
658         sn_init_cpei_timer();
659
660 #ifdef CONFIG_PROC_FS
661         register_sn_procfs();
662 #endif
663
664         /* busses are not known yet ... */
665         for (i = 0; i <= max_segment_number; i++)
666                 for (j = 0; j <= max_pcibus_number; j++)
667                         sn_pci_controller_fixup(i, j, NULL);
668
669         /*
670          * Generic Linux PCI Layer has created the pci_bus and pci_dev 
671          * structures - time for us to add our SN PLatform specific 
672          * information.
673          */
674
675         while ((pci_dev =
676                 pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL)
677                 sn_pci_fixup_slot(pci_dev);
678
679         sn_ioif_inited = 1;     /* sn I/O infrastructure now initialized */
680
681         return 0;
682 }
683
684 /*
685  * hubdev_init_node() - Creates the HUB data structure and link them to it's 
686  *      own NODE specific data area.
687  */
688 void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
689 {
690         struct hubdev_info *hubdev_info;
691         int size;
692         pg_data_t *pg;
693
694         size = sizeof(struct hubdev_info);
695
696         if (node >= num_online_nodes()) /* Headless/memless IO nodes */
697                 pg = NODE_DATA(0);
698         else
699                 pg = NODE_DATA(node);
700
701         hubdev_info = (struct hubdev_info *)alloc_bootmem_node(pg, size);
702
703         npda->pdinfo = (void *)hubdev_info;
704 }
705
706 geoid_t
707 cnodeid_get_geoid(cnodeid_t cnode)
708 {
709         struct hubdev_info *hubdev;
710
711         hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
712         return hubdev->hdi_geoid;
713 }
714
715 void sn_generate_path(struct pci_bus *pci_bus, char *address)
716 {
717         nasid_t nasid;
718         cnodeid_t cnode;
719         geoid_t geoid;
720         moduleid_t moduleid;
721         u16 bricktype;
722
723         nasid = NASID_GET(SN_PCIBUS_BUSSOFT(pci_bus)->bs_base);
724         cnode = nasid_to_cnodeid(nasid);
725         geoid = cnodeid_get_geoid(cnode);
726         moduleid = geo_module(geoid);
727
728         sprintf(address, "module_%c%c%c%c%.2d",
729                 '0'+RACK_GET_CLASS(MODULE_GET_RACK(moduleid)),
730                 '0'+RACK_GET_GROUP(MODULE_GET_RACK(moduleid)),
731                 '0'+RACK_GET_NUM(MODULE_GET_RACK(moduleid)),
732                 MODULE_GET_BTCHAR(moduleid), MODULE_GET_BPOS(moduleid));
733
734         /* Tollhouse requires slot id to be displayed */
735         bricktype = MODULE_GET_BTYPE(moduleid);
736         if ((bricktype == L1_BRICKTYPE_191010) ||
737             (bricktype == L1_BRICKTYPE_1932))
738                         sprintf(address, "%s^%d", address, geo_slot(geoid));
739 }
740
741 subsys_initcall(sn_pci_init);
742 EXPORT_SYMBOL(sn_pci_fixup_slot);
743 EXPORT_SYMBOL(sn_pci_unfixup_slot);
744 EXPORT_SYMBOL(sn_pci_controller_fixup);
745 EXPORT_SYMBOL(sn_bus_store_sysdata);
746 EXPORT_SYMBOL(sn_bus_free_sysdata);
747 EXPORT_SYMBOL(sn_generate_path);