debuggers.hg

view xen/arch/ia64/linux-xen/sn/kernel/io_init.c @ 0:7d21f7218375

Exact replica of unstable on 051908 + README-this
author Mukesh Rathor
date Mon May 19 15:34:57 2008 -0700 (2008-05-19)
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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 */
9 #include <linux/bootmem.h>
10 #include <linux/nodemask.h>
11 #ifdef XEN
12 #include <linux/init.h>
13 #endif
14 #include <asm/sn/types.h>
15 #include <asm/sn/addrs.h>
16 #include <asm/sn/sn_feature_sets.h>
17 #include <asm/sn/geo.h>
18 #include <asm/sn/io.h>
19 #include <asm/sn/l1.h>
20 #include <asm/sn/module.h>
21 #include <asm/sn/pcibr_provider.h>
22 #include <asm/sn/pcibus_provider_defs.h>
23 #include <asm/sn/pcidev.h>
24 #include <asm/sn/simulator.h>
25 #include <asm/sn/sn_sal.h>
26 #ifndef XEN
27 #include <asm/sn/tioca_provider.h>
28 #include <asm/sn/tioce_provider.h>
29 #endif
30 #ifdef XEN
31 #include "asm/sn/hubdev.h"
32 #include "asm/sn/xwidgetdev.h"
33 #else
34 #include "xtalk/hubdev.h"
35 #include "xtalk/xwidgetdev.h"
36 #endif
39 extern void sn_init_cpei_timer(void);
40 extern void register_sn_procfs(void);
41 #ifdef XEN
42 #define pci_dev_get(dev) do{}while(0)
43 extern void sn_irq_lh_init(void);
44 #endif
46 static struct list_head sn_sysdata_list;
48 /* sysdata list struct */
49 struct sysdata_el {
50 struct list_head entry;
51 void *sysdata;
52 };
54 struct slab_info {
55 struct hubdev_info hubdev;
56 };
58 struct brick {
59 moduleid_t id; /* Module ID of this module */
60 struct slab_info slab_info[MAX_SLABS + 1];
61 };
63 int sn_ioif_inited; /* SN I/O infrastructure initialized? */
65 struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; /* indexed by asic type */
67 static int max_segment_number; /* Default highest segment number */
68 static int max_pcibus_number = 255; /* Default highest pci bus number */
70 /*
71 * Hooks and struct for unsupported pci providers
72 */
74 static dma_addr_t
75 sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size, int type)
76 {
77 return 0;
78 }
80 static void
81 sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
82 {
83 return;
84 }
86 static void *
87 sn_default_pci_bus_fixup(struct pcibus_bussoft *soft, struct pci_controller *controller)
88 {
89 return NULL;
90 }
92 static struct sn_pcibus_provider sn_pci_default_provider = {
93 .dma_map = sn_default_pci_map,
94 .dma_map_consistent = sn_default_pci_map,
95 .dma_unmap = sn_default_pci_unmap,
96 .bus_fixup = sn_default_pci_bus_fixup,
97 };
99 /*
100 * Retrieve the DMA Flush List given nasid, widget, and device.
101 * This list is needed to implement the WAR - Flush DMA data on PIO Reads.
102 */
103 static inline u64
104 sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
105 u64 address)
106 {
107 struct ia64_sal_retval ret_stuff;
108 ret_stuff.status = 0;
109 ret_stuff.v0 = 0;
111 SAL_CALL_NOLOCK(ret_stuff,
112 (u64) SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST,
113 (u64) nasid, (u64) widget_num,
114 (u64) device_num, (u64) address, 0, 0, 0);
115 return ret_stuff.status;
116 }
118 /*
119 * Retrieve the hub device info structure for the given nasid.
120 */
121 static inline u64 sal_get_hubdev_info(u64 handle, u64 address)
122 {
123 struct ia64_sal_retval ret_stuff;
124 ret_stuff.status = 0;
125 ret_stuff.v0 = 0;
127 SAL_CALL_NOLOCK(ret_stuff,
128 (u64) SN_SAL_IOIF_GET_HUBDEV_INFO,
129 (u64) handle, (u64) address, 0, 0, 0, 0, 0);
130 return ret_stuff.v0;
131 }
133 /*
134 * Retrieve the pci bus information given the bus number.
135 */
136 static inline u64 sal_get_pcibus_info(u64 segment, u64 busnum, u64 address)
137 {
138 struct ia64_sal_retval ret_stuff;
139 ret_stuff.status = 0;
140 ret_stuff.v0 = 0;
142 SAL_CALL_NOLOCK(ret_stuff,
143 (u64) SN_SAL_IOIF_GET_PCIBUS_INFO,
144 (u64) segment, (u64) busnum, (u64) address, 0, 0, 0, 0);
145 return ret_stuff.v0;
146 }
148 /*
149 * Retrieve the pci device information given the bus and device|function number.
150 */
151 static inline u64
152 sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
153 u64 sn_irq_info)
154 {
155 struct ia64_sal_retval ret_stuff;
156 ret_stuff.status = 0;
157 ret_stuff.v0 = 0;
159 SAL_CALL_NOLOCK(ret_stuff,
160 (u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
161 (u64) segment, (u64) bus_number, (u64) devfn,
162 (u64) pci_dev,
163 sn_irq_info, 0, 0);
164 return ret_stuff.v0;
165 }
167 #ifndef XEN
168 /*
169 * sn_pcidev_info_get() - Retrieve the pcidev_info struct for the specified
170 * device.
171 */
172 inline struct pcidev_info *
173 sn_pcidev_info_get(struct pci_dev *dev)
174 {
175 struct pcidev_info *pcidev;
177 list_for_each_entry(pcidev,
178 &(SN_PCI_CONTROLLER(dev)->pcidev_info), pdi_list) {
179 if (pcidev->pdi_linux_pcidev == dev) {
180 return pcidev;
181 }
182 }
183 return NULL;
184 }
186 /* Older PROM flush WAR
187 *
188 * 01/16/06 -- This war will be in place until a new official PROM is released.
189 * Additionally note that the struct sn_flush_device_war also has to be
190 * removed from arch/ia64/sn/include/xtalk/hubdev.h
191 */
192 static u8 war_implemented = 0;
194 static s64 sn_device_fixup_war(u64 nasid, u64 widget, int device,
195 struct sn_flush_device_common *common)
196 {
197 struct sn_flush_device_war *war_list;
198 struct sn_flush_device_war *dev_entry;
199 struct ia64_sal_retval isrv = {0,0,0,0};
201 if (!war_implemented) {
202 printk(KERN_WARNING "PROM version < 4.50 -- implementing old "
203 "PROM flush WAR\n");
204 war_implemented = 1;
205 }
207 war_list = kzalloc(DEV_PER_WIDGET * sizeof(*war_list), GFP_KERNEL);
208 if (!war_list)
209 BUG();
211 SAL_CALL_NOLOCK(isrv, SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
212 nasid, widget, __pa(war_list), 0, 0, 0 ,0);
213 if (isrv.status)
214 panic("sn_device_fixup_war failed: %s\n",
215 ia64_sal_strerror(isrv.status));
217 dev_entry = war_list + device;
218 memcpy(common,dev_entry, sizeof(*common));
219 kfree(war_list);
221 return isrv.status;
222 }
224 /*
225 * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
226 * each node in the system.
227 */
228 static void __init sn_fixup_ionodes(void)
229 {
230 struct sn_flush_device_kernel *sn_flush_device_kernel;
231 struct sn_flush_device_kernel *dev_entry;
232 struct hubdev_info *hubdev;
233 u64 status;
234 u64 nasid;
235 int i, widget, device, size;
237 /*
238 * Get SGI Specific HUB chipset information.
239 * Inform Prom that this kernel can support domain bus numbering.
240 */
241 for (i = 0; i < num_cnodes; i++) {
242 hubdev = (struct hubdev_info *)(NODEPDA(i)->pdinfo);
243 nasid = cnodeid_to_nasid(i);
244 hubdev->max_segment_number = 0xffffffff;
245 hubdev->max_pcibus_number = 0xff;
246 status = sal_get_hubdev_info(nasid, (u64) __pa(hubdev));
247 if (status)
248 continue;
250 /* Save the largest Domain and pcibus numbers found. */
251 if (hubdev->max_segment_number) {
252 /*
253 * Dealing with a Prom that supports segments.
254 */
255 max_segment_number = hubdev->max_segment_number;
256 max_pcibus_number = hubdev->max_pcibus_number;
257 }
259 /* Attach the error interrupt handlers */
260 if (nasid & 1)
261 ice_error_init(hubdev);
262 else
263 hub_error_init(hubdev);
265 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
266 hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
268 if (!hubdev->hdi_flush_nasid_list.widget_p)
269 continue;
271 size = (HUB_WIDGET_ID_MAX + 1) *
272 sizeof(struct sn_flush_device_kernel *);
273 hubdev->hdi_flush_nasid_list.widget_p =
274 kzalloc(size, GFP_KERNEL);
275 if (!hubdev->hdi_flush_nasid_list.widget_p)
276 BUG();
278 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
279 size = DEV_PER_WIDGET *
280 sizeof(struct sn_flush_device_kernel);
281 sn_flush_device_kernel = kzalloc(size, GFP_KERNEL);
282 if (!sn_flush_device_kernel)
283 BUG();
285 dev_entry = sn_flush_device_kernel;
286 for (device = 0; device < DEV_PER_WIDGET;
287 device++,dev_entry++) {
288 size = sizeof(struct sn_flush_device_common);
289 dev_entry->common = kzalloc(size, GFP_KERNEL);
290 if (!dev_entry->common)
291 BUG();
293 if (sn_prom_feature_available(
294 PRF_DEVICE_FLUSH_LIST))
295 status = sal_get_device_dmaflush_list(
296 nasid, widget, device,
297 (u64)(dev_entry->common));
298 else
299 #ifdef XEN
300 BUG();
301 #else
302 status = sn_device_fixup_war(nasid,
303 widget, device,
304 dev_entry->common);
305 #endif
306 if (status != SALRET_OK)
307 panic("SAL call failed: %s\n",
308 ia64_sal_strerror(status));
310 spin_lock_init(&dev_entry->sfdl_flush_lock);
311 }
313 if (sn_flush_device_kernel)
314 hubdev->hdi_flush_nasid_list.widget_p[widget] =
315 sn_flush_device_kernel;
316 }
317 }
318 }
320 /*
321 * sn_pci_window_fixup() - Create a pci_window for each device resource.
322 * Until ACPI support is added, we need this code
323 * to setup pci_windows for use by
324 * pcibios_bus_to_resource(),
325 * pcibios_resource_to_bus(), etc.
326 */
327 static void
328 sn_pci_window_fixup(struct pci_dev *dev, unsigned int count,
329 s64 * pci_addrs)
330 {
331 struct pci_controller *controller = PCI_CONTROLLER(dev->bus);
332 unsigned int i;
333 unsigned int idx;
334 unsigned int new_count;
335 struct pci_window *new_window;
337 if (count == 0)
338 return;
339 idx = controller->windows;
340 new_count = controller->windows + count;
341 new_window = kcalloc(new_count, sizeof(struct pci_window), GFP_KERNEL);
342 if (new_window == NULL)
343 BUG();
344 if (controller->window) {
345 memcpy(new_window, controller->window,
346 sizeof(struct pci_window) * controller->windows);
347 kfree(controller->window);
348 }
350 /* Setup a pci_window for each device resource. */
351 for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
352 if (pci_addrs[i] == -1)
353 continue;
355 new_window[idx].offset = dev->resource[i].start - pci_addrs[i];
356 new_window[idx].resource = dev->resource[i];
357 idx++;
358 }
360 controller->windows = new_count;
361 controller->window = new_window;
362 }
364 void sn_pci_unfixup_slot(struct pci_dev *dev)
365 {
366 struct pci_dev *host_pci_dev = SN_PCIDEV_INFO(dev)->host_pci_dev;
368 sn_irq_unfixup(dev);
369 pci_dev_put(host_pci_dev);
370 pci_dev_put(dev);
371 }
372 #endif
374 #ifndef XEN
375 /*
376 * sn_pci_fixup_slot() - This routine sets up a slot's resources
377 * consistent with the Linux PCI abstraction layer. Resources acquired
378 * from our PCI provider include PIO maps to BAR space and interrupt
379 * objects.
380 */
381 void sn_pci_fixup_slot(struct pci_dev *dev)
382 {
383 unsigned int count = 0;
384 int idx;
385 int segment = pci_domain_nr(dev->bus);
386 int status = 0;
387 struct pcibus_bussoft *bs;
388 struct pci_bus *host_pci_bus;
389 struct pci_dev *host_pci_dev;
390 struct pcidev_info *pcidev_info;
391 s64 pci_addrs[PCI_ROM_RESOURCE + 1];
392 struct sn_irq_info *sn_irq_info;
393 unsigned long size;
394 unsigned int bus_no, devfn;
396 pci_dev_get(dev); /* for the sysdata pointer */
397 pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
398 if (!pcidev_info)
399 BUG(); /* Cannot afford to run out of memory */
401 sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
402 if (!sn_irq_info)
403 BUG(); /* Cannot afford to run out of memory */
405 /* Call to retrieve pci device information needed by kernel. */
406 status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
407 dev->devfn,
408 (u64) __pa(pcidev_info),
409 (u64) __pa(sn_irq_info));
410 if (status)
411 BUG(); /* Cannot get platform pci device information */
413 /* Add pcidev_info to list in sn_pci_controller struct */
414 list_add_tail(&pcidev_info->pdi_list,
415 &(SN_PCI_CONTROLLER(dev->bus)->pcidev_info));
417 /* Copy over PIO Mapped Addresses */
418 for (idx = 0; idx <= PCI_ROM_RESOURCE; idx++) {
419 unsigned long start, end, addr;
421 if (!pcidev_info->pdi_pio_mapped_addr[idx]) {
422 pci_addrs[idx] = -1;
423 continue;
424 }
426 start = dev->resource[idx].start;
427 end = dev->resource[idx].end;
428 size = end - start;
429 if (size == 0) {
430 pci_addrs[idx] = -1;
431 continue;
432 }
433 pci_addrs[idx] = start;
434 count++;
435 addr = pcidev_info->pdi_pio_mapped_addr[idx];
436 addr = ((addr << 4) >> 4) | __IA64_UNCACHED_OFFSET;
437 dev->resource[idx].start = addr;
438 dev->resource[idx].end = addr + size;
439 #ifndef XEN
440 if (dev->resource[idx].flags & IORESOURCE_IO)
441 dev->resource[idx].parent = &ioport_resource;
442 else
443 dev->resource[idx].parent = &iomem_resource;
444 #endif
445 }
446 /* Create a pci_window in the pci_controller struct for
447 * each device resource.
448 */
449 if (count > 0)
450 sn_pci_window_fixup(dev, count, pci_addrs);
452 /*
453 * Using the PROMs values for the PCI host bus, get the Linux
454 * PCI host_pci_dev struct and set up host bus linkages
455 */
457 bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff;
458 devfn = pcidev_info->pdi_slot_host_handle & 0xffffffff;
459 host_pci_bus = pci_find_bus(segment, bus_no);
460 host_pci_dev = pci_get_slot(host_pci_bus, devfn);
462 pcidev_info->host_pci_dev = host_pci_dev;
463 pcidev_info->pdi_linux_pcidev = dev;
464 pcidev_info->pdi_host_pcidev_info = SN_PCIDEV_INFO(host_pci_dev);
465 bs = SN_PCIBUS_BUSSOFT(dev->bus);
466 pcidev_info->pdi_pcibus_info = bs;
468 if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
469 SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
470 } else {
471 SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
472 }
474 /* Only set up IRQ stuff if this device has a host bus context */
475 if (bs && sn_irq_info->irq_irq) {
476 pcidev_info->pdi_sn_irq_info = sn_irq_info;
477 dev->irq = pcidev_info->pdi_sn_irq_info->irq_irq;
478 sn_irq_fixup(dev, sn_irq_info);
479 } else {
480 pcidev_info->pdi_sn_irq_info = NULL;
481 kfree(sn_irq_info);
482 }
483 }
484 #endif
486 /*
487 * sn_pci_controller_fixup() - This routine sets up a bus's resources
488 * consistent with the Linux PCI abstraction layer.
489 */
490 void sn_pci_controller_fixup(int segment, int busnum, struct pci_bus *bus)
491 {
492 int status;
493 int nasid, cnode;
494 struct pci_controller *controller;
495 struct sn_pci_controller *sn_controller;
496 struct pcibus_bussoft *prom_bussoft_ptr;
497 struct hubdev_info *hubdev_info;
498 void *provider_soft;
499 struct sn_pcibus_provider *provider;
501 status = sal_get_pcibus_info((u64) segment, (u64) busnum,
502 (u64) ia64_tpa(&prom_bussoft_ptr));
503 if (status > 0)
504 return; /*bus # does not exist */
505 prom_bussoft_ptr = __va(prom_bussoft_ptr);
507 /* Allocate a sn_pci_controller, which has a pci_controller struct
508 * as the first member.
509 */
510 sn_controller = kzalloc(sizeof(struct sn_pci_controller), GFP_KERNEL);
511 if (!sn_controller)
512 BUG();
513 INIT_LIST_HEAD(&sn_controller->pcidev_info);
514 controller = &sn_controller->pci_controller;
515 controller->segment = segment;
517 #ifndef XEN
518 if (bus == NULL) {
519 bus = pci_scan_bus(busnum, &pci_root_ops, controller);
520 if (bus == NULL)
521 goto error_return; /* error, or bus already scanned */
522 bus->sysdata = NULL;
523 }
525 if (bus->sysdata)
526 goto error_return; /* sysdata already alloc'd */
528 /*
529 * Per-provider fixup. Copies the contents from prom to local
530 * area and links SN_PCIBUS_BUSSOFT().
531 */
533 if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES)
534 goto error_return; /* unsupported asic type */
536 if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)
537 goto error_return; /* no further fixup necessary */
539 #endif
540 provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
541 if (provider == NULL)
542 goto error_return; /* no provider registerd for this asic */
544 bus->sysdata = controller;
545 if (provider->bus_fixup)
546 provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr, controller);
547 else
548 provider_soft = NULL;
550 if (provider_soft == NULL) {
551 /* fixup failed or not applicable */
552 bus->sysdata = NULL;
553 goto error_return;
554 }
556 /*
557 * Setup pci_windows for legacy IO and MEM space.
558 * (Temporary until ACPI support is in place.)
559 */
560 controller->window = kcalloc(2, sizeof(struct pci_window), GFP_KERNEL);
561 if (controller->window == NULL)
562 BUG();
563 controller->window[0].offset = prom_bussoft_ptr->bs_legacy_io;
564 controller->window[0].resource.name = "legacy_io";
565 controller->window[0].resource.flags = IORESOURCE_IO;
566 controller->window[0].resource.start = prom_bussoft_ptr->bs_legacy_io;
567 controller->window[0].resource.end =
568 controller->window[0].resource.start + 0xffff;
569 #ifndef XEN
570 controller->window[0].resource.parent = &ioport_resource;
571 #endif
572 controller->window[1].offset = prom_bussoft_ptr->bs_legacy_mem;
573 controller->window[1].resource.name = "legacy_mem";
574 controller->window[1].resource.flags = IORESOURCE_MEM;
575 controller->window[1].resource.start = prom_bussoft_ptr->bs_legacy_mem;
576 controller->window[1].resource.end =
577 controller->window[1].resource.start + (1024 * 1024) - 1;
578 #ifndef XEN
579 controller->window[1].resource.parent = &iomem_resource;
580 #endif
581 controller->windows = 2;
583 /*
584 * Generic bus fixup goes here. Don't reference prom_bussoft_ptr
585 * after this point.
586 */
588 PCI_CONTROLLER(bus)->platform_data = provider_soft;
589 nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
590 cnode = nasid_to_cnodeid(nasid);
591 hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
592 SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
593 &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
595 /*
596 * If the node information we obtained during the fixup phase is invalid
597 * then set controller->node to -1 (undetermined)
598 */
599 if (controller->node >= num_online_nodes()) {
600 struct pcibus_bussoft *b = SN_PCIBUS_BUSSOFT(bus);
602 printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%u"
603 "L_IO=%lx L_MEM=%lx BASE=%lx\n",
604 b->bs_asic_type, b->bs_xid, b->bs_persist_busnum,
605 b->bs_legacy_io, b->bs_legacy_mem, b->bs_base);
606 printk(KERN_WARNING "on node %d but only %d nodes online."
607 "Association set to undetermined.\n",
608 controller->node, num_online_nodes());
609 controller->node = -1;
610 }
611 return;
613 error_return:
615 kfree(sn_controller);
616 return;
617 }
619 #ifndef XEN
620 void sn_bus_store_sysdata(struct pci_dev *dev)
621 {
622 struct sysdata_el *element;
624 element = kzalloc(sizeof(struct sysdata_el), GFP_KERNEL);
625 if (!element) {
626 dev_dbg(dev, "%s: out of memory!\n", __FUNCTION__);
627 return;
628 }
629 element->sysdata = SN_PCIDEV_INFO(dev);
630 list_add(&element->entry, &sn_sysdata_list);
631 }
633 void sn_bus_free_sysdata(void)
634 {
635 struct sysdata_el *element;
636 struct list_head *list, *safe;
638 list_for_each_safe(list, safe, &sn_sysdata_list) {
639 element = list_entry(list, struct sysdata_el, entry);
640 list_del(&element->entry);
641 list_del(&(((struct pcidev_info *)
642 (element->sysdata))->pdi_list));
643 kfree(element->sysdata);
644 kfree(element);
645 }
646 return;
647 }
648 #endif
650 /*
651 * Ugly hack to get PCI setup until we have a proper ACPI namespace.
652 */
654 #define PCI_BUSES_TO_SCAN 256
656 static int __init sn_io_early_init(void)
657 {
658 int i, j;
659 #ifndef XEN
660 struct pci_dev *pci_dev = NULL;
661 #endif
663 if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
664 return 0;
666 /*
667 * prime sn_pci_provider[]. Individial provider init routines will
668 * override their respective default entries.
669 */
671 for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
672 sn_pci_provider[i] = &sn_pci_default_provider;
674 #ifndef XEN
675 pcibr_init_provider();
676 tioca_init_provider();
677 tioce_init_provider();
678 #endif
680 /*
681 * This is needed to avoid bounce limit checks in the blk layer
682 */
683 ia64_max_iommu_merge_mask = ~PAGE_MASK;
684 #ifndef XEN
685 sn_fixup_ionodes();
686 #endif
687 sn_irq_lh_init();
688 INIT_LIST_HEAD(&sn_sysdata_list);
689 #ifndef XEN
690 sn_init_cpei_timer();
692 #ifdef CONFIG_PROC_FS
693 register_sn_procfs();
694 #endif
695 #endif
696 /* busses are not known yet ... */
697 for (i = 0; i <= max_segment_number; i++)
698 for (j = 0; j <= max_pcibus_number; j++)
699 sn_pci_controller_fixup(i, j, NULL);
701 /*
702 * Generic Linux PCI Layer has created the pci_bus and pci_dev
703 * structures - time for us to add our SN PLatform specific
704 * information.
705 */
707 #ifndef XEN
708 while ((pci_dev =
709 pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pci_dev)) != NULL)
710 sn_pci_fixup_slot(pci_dev);
711 #endif
713 sn_ioif_inited = 1; /* sn I/O infrastructure now initialized */
715 return 0;
716 }
718 /*
719 * hubdev_init_node() - Creates the HUB data structure and link them to it's
720 * own NODE specific data area.
721 */
722 void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
723 {
724 struct hubdev_info *hubdev_info;
725 int size;
726 #ifndef XEN
727 pg_data_t *pg;
728 #else
729 struct pglist_data *pg;
730 #endif
732 size = sizeof(struct hubdev_info);
734 if (node >= num_online_nodes()) /* Headless/memless IO nodes */
735 pg = NODE_DATA(0);
736 else
737 pg = NODE_DATA(node);
739 hubdev_info = (struct hubdev_info *)alloc_bootmem_node(pg, size);
741 npda->pdinfo = (void *)hubdev_info;
742 }
744 geoid_t
745 cnodeid_get_geoid(cnodeid_t cnode)
746 {
747 struct hubdev_info *hubdev;
749 hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
750 return hubdev->hdi_geoid;
751 }
753 #ifndef XEN
754 void sn_generate_path(struct pci_bus *pci_bus, char *address)
755 {
756 nasid_t nasid;
757 cnodeid_t cnode;
758 geoid_t geoid;
759 moduleid_t moduleid;
760 u16 bricktype;
762 nasid = NASID_GET(SN_PCIBUS_BUSSOFT(pci_bus)->bs_base);
763 cnode = nasid_to_cnodeid(nasid);
764 geoid = cnodeid_get_geoid(cnode);
765 moduleid = geo_module(geoid);
767 snprintf(address, 15, "module_%c%c%c%c%.2d",
768 '0'+RACK_GET_CLASS(MODULE_GET_RACK(moduleid)),
769 '0'+RACK_GET_GROUP(MODULE_GET_RACK(moduleid)),
770 '0'+RACK_GET_NUM(MODULE_GET_RACK(moduleid)),
771 MODULE_GET_BTCHAR(moduleid), MODULE_GET_BPOS(moduleid));
773 /* Tollhouse requires slot id to be displayed */
774 bricktype = MODULE_GET_BTYPE(moduleid);
775 if ((bricktype == L1_BRICKTYPE_191010) ||
776 (bricktype == L1_BRICKTYPE_1932))
777 snprintf(address, 15+8, "%s^%d", address, geo_slot(geoid));
778 }
779 #endif
781 #ifdef XEN
782 __initcall(sn_io_early_init);
783 #else
784 subsys_initcall(sn_io_early_init);
785 #endif
786 #ifndef XEN
787 EXPORT_SYMBOL(sn_pci_fixup_slot);
788 EXPORT_SYMBOL(sn_pci_unfixup_slot);
789 EXPORT_SYMBOL(sn_pci_controller_fixup);
790 EXPORT_SYMBOL(sn_bus_store_sysdata);
791 EXPORT_SYMBOL(sn_bus_free_sysdata);
792 EXPORT_SYMBOL(sn_generate_path);
793 #endif