blob: 7ed72d3faf73047130cdc042e8da9a02b3e6ed36 [file] [log] [blame]
John Keller8ea60912006-10-04 16:49:25 -05001/*
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) 2006 Silicon Graphics, Inc. All rights reserved.
7 */
8
9#include <linux/bootmem.h>
10#include <asm/sn/types.h>
11#include <asm/sn/addrs.h>
12#include <asm/sn/sn_feature_sets.h>
13#include <asm/sn/geo.h>
14#include <asm/sn/io.h>
15#include <asm/sn/l1.h>
16#include <asm/sn/module.h>
17#include <asm/sn/pcibr_provider.h>
18#include <asm/sn/pcibus_provider_defs.h>
19#include <asm/sn/pcidev.h>
20#include <asm/sn/simulator.h>
21#include <asm/sn/sn_sal.h>
22#include <asm/sn/tioca_provider.h>
23#include <asm/sn/tioce_provider.h>
24#include "xtalk/hubdev.h"
25#include "xtalk/xwidgetdev.h"
26#include <linux/acpi.h>
27#include <asm/sn/sn2/sn_hwperf.h>
Len Brown647fb472007-02-02 22:14:22 -050028#include <asm/sn/acpi.h>
John Keller6f09a922007-01-30 01:17:37 -050029#include "acpi/acglobal.h"
John Keller8ea60912006-10-04 16:49:25 -050030
31extern void sn_init_cpei_timer(void);
32extern void register_sn_procfs(void);
John Keller8ea60912006-10-04 16:49:25 -050033extern void sn_io_acpi_init(void);
34extern void sn_io_init(void);
35
Len Brown647fb472007-02-02 22:14:22 -050036
John Keller8ea60912006-10-04 16:49:25 -050037static struct list_head sn_sysdata_list;
38
39/* sysdata list struct */
40struct sysdata_el {
41 struct list_head entry;
42 void *sysdata;
43};
44
45int sn_ioif_inited; /* SN I/O infrastructure initialized? */
46
John Keller6f09a922007-01-30 01:17:37 -050047int sn_acpi_rev; /* SN ACPI revision */
48EXPORT_SYMBOL_GPL(sn_acpi_rev);
John Keller8ea60912006-10-04 16:49:25 -050049
John Keller6f09a922007-01-30 01:17:37 -050050struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; /* indexed by asic type */
Alexey Starikovskiyad71860a2007-02-02 19:48:19 +030051
John Keller8ea60912006-10-04 16:49:25 -050052/*
53 * Hooks and struct for unsupported pci providers
54 */
55
56static dma_addr_t
57sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size, int type)
58{
59 return 0;
60}
61
62static void
63sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
64{
65 return;
66}
67
68static void *
69sn_default_pci_bus_fixup(struct pcibus_bussoft *soft, struct pci_controller *controller)
70{
71 return NULL;
72}
73
74static struct sn_pcibus_provider sn_pci_default_provider = {
75 .dma_map = sn_default_pci_map,
76 .dma_map_consistent = sn_default_pci_map,
77 .dma_unmap = sn_default_pci_unmap,
78 .bus_fixup = sn_default_pci_bus_fixup,
79};
80
81/*
82 * Retrieve the DMA Flush List given nasid, widget, and device.
83 * This list is needed to implement the WAR - Flush DMA data on PIO Reads.
84 */
85static inline u64
86sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
87 u64 address)
88{
89 struct ia64_sal_retval ret_stuff;
90 ret_stuff.status = 0;
91 ret_stuff.v0 = 0;
92
93 SAL_CALL_NOLOCK(ret_stuff,
94 (u64) SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST,
95 (u64) nasid, (u64) widget_num,
96 (u64) device_num, (u64) address, 0, 0, 0);
97 return ret_stuff.status;
98}
99
100/*
John Keller8ea60912006-10-04 16:49:25 -0500101 * sn_pcidev_info_get() - Retrieve the pcidev_info struct for the specified
102 * device.
103 */
104inline struct pcidev_info *
105sn_pcidev_info_get(struct pci_dev *dev)
106{
107 struct pcidev_info *pcidev;
108
109 list_for_each_entry(pcidev,
110 &(SN_PLATFORM_DATA(dev)->pcidev_info), pdi_list) {
111 if (pcidev->pdi_linux_pcidev == dev)
112 return pcidev;
113 }
114 return NULL;
115}
116
117/* Older PROM flush WAR
118 *
119 * 01/16/06 -- This war will be in place until a new official PROM is released.
120 * Additionally note that the struct sn_flush_device_war also has to be
121 * removed from arch/ia64/sn/include/xtalk/hubdev.h
122 */
123static u8 war_implemented = 0;
124
125static s64 sn_device_fixup_war(u64 nasid, u64 widget, int device,
126 struct sn_flush_device_common *common)
127{
128 struct sn_flush_device_war *war_list;
129 struct sn_flush_device_war *dev_entry;
130 struct ia64_sal_retval isrv = {0,0,0,0};
131
132 if (!war_implemented) {
133 printk(KERN_WARNING "PROM version < 4.50 -- implementing old "
134 "PROM flush WAR\n");
135 war_implemented = 1;
136 }
137
138 war_list = kzalloc(DEV_PER_WIDGET * sizeof(*war_list), GFP_KERNEL);
139 if (!war_list)
140 BUG();
141
142 SAL_CALL_NOLOCK(isrv, SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
143 nasid, widget, __pa(war_list), 0, 0, 0 ,0);
144 if (isrv.status)
145 panic("sn_device_fixup_war failed: %s\n",
146 ia64_sal_strerror(isrv.status));
147
148 dev_entry = war_list + device;
149 memcpy(common,dev_entry, sizeof(*common));
150 kfree(war_list);
151
152 return isrv.status;
153}
154
155/*
156 * sn_common_hubdev_init() - This routine is called to initialize the HUB data
157 * structure for each node in the system.
158 */
159void __init
160sn_common_hubdev_init(struct hubdev_info *hubdev)
161{
162
163 struct sn_flush_device_kernel *sn_flush_device_kernel;
164 struct sn_flush_device_kernel *dev_entry;
165 s64 status;
166 int widget, device, size;
167
168 /* Attach the error interrupt handlers */
169 if (hubdev->hdi_nasid & 1) /* If TIO */
170 ice_error_init(hubdev);
171 else
172 hub_error_init(hubdev);
173
174 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
175 hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
176
177 if (!hubdev->hdi_flush_nasid_list.widget_p)
178 return;
179
180 size = (HUB_WIDGET_ID_MAX + 1) *
181 sizeof(struct sn_flush_device_kernel *);
182 hubdev->hdi_flush_nasid_list.widget_p =
183 kzalloc(size, GFP_KERNEL);
184 if (!hubdev->hdi_flush_nasid_list.widget_p)
185 BUG();
186
187 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
188 size = DEV_PER_WIDGET *
189 sizeof(struct sn_flush_device_kernel);
190 sn_flush_device_kernel = kzalloc(size, GFP_KERNEL);
191 if (!sn_flush_device_kernel)
192 BUG();
193
194 dev_entry = sn_flush_device_kernel;
195 for (device = 0; device < DEV_PER_WIDGET;
196 device++, dev_entry++) {
197 size = sizeof(struct sn_flush_device_common);
198 dev_entry->common = kzalloc(size, GFP_KERNEL);
199 if (!dev_entry->common)
200 BUG();
201 if (sn_prom_feature_available(PRF_DEVICE_FLUSH_LIST))
202 status = sal_get_device_dmaflush_list(
203 hubdev->hdi_nasid, widget, device,
204 (u64)(dev_entry->common));
205 else
206 status = sn_device_fixup_war(hubdev->hdi_nasid,
207 widget, device,
208 dev_entry->common);
209 if (status != SALRET_OK)
210 panic("SAL call failed: %s\n",
211 ia64_sal_strerror(status));
212
213 spin_lock_init(&dev_entry->sfdl_flush_lock);
214 }
215
216 if (sn_flush_device_kernel)
217 hubdev->hdi_flush_nasid_list.widget_p[widget] =
218 sn_flush_device_kernel;
219 }
220}
221
222void sn_pci_unfixup_slot(struct pci_dev *dev)
223{
224 struct pci_dev *host_pci_dev = SN_PCIDEV_INFO(dev)->host_pci_dev;
225
226 sn_irq_unfixup(dev);
227 pci_dev_put(host_pci_dev);
228 pci_dev_put(dev);
229}
230
231/*
John Keller6f09a922007-01-30 01:17:37 -0500232 * sn_pci_fixup_slot()
John Keller8ea60912006-10-04 16:49:25 -0500233 */
John Keller6f09a922007-01-30 01:17:37 -0500234void sn_pci_fixup_slot(struct pci_dev *dev, struct pcidev_info *pcidev_info,
235 struct sn_irq_info *sn_irq_info)
John Keller8ea60912006-10-04 16:49:25 -0500236{
237 int segment = pci_domain_nr(dev->bus);
John Keller8ea60912006-10-04 16:49:25 -0500238 struct pcibus_bussoft *bs;
John Keller6f09a922007-01-30 01:17:37 -0500239 struct pci_bus *host_pci_bus;
240 struct pci_dev *host_pci_dev;
241 unsigned int bus_no, devfn;
John Keller8ea60912006-10-04 16:49:25 -0500242
243 pci_dev_get(dev); /* for the sysdata pointer */
John Keller8ea60912006-10-04 16:49:25 -0500244
245 /* Add pcidev_info to list in pci_controller.platform_data */
246 list_add_tail(&pcidev_info->pdi_list,
247 &(SN_PLATFORM_DATA(dev->bus)->pcidev_info));
John Keller8ea60912006-10-04 16:49:25 -0500248 /*
249 * Using the PROMs values for the PCI host bus, get the Linux
John Keller6f09a922007-01-30 01:17:37 -0500250 * PCI host_pci_dev struct and set up host bus linkages
John Keller8ea60912006-10-04 16:49:25 -0500251 */
252
253 bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff;
254 devfn = pcidev_info->pdi_slot_host_handle & 0xffffffff;
255 host_pci_bus = pci_find_bus(segment, bus_no);
256 host_pci_dev = pci_get_slot(host_pci_bus, devfn);
257
258 pcidev_info->host_pci_dev = host_pci_dev;
259 pcidev_info->pdi_linux_pcidev = dev;
260 pcidev_info->pdi_host_pcidev_info = SN_PCIDEV_INFO(host_pci_dev);
261 bs = SN_PCIBUS_BUSSOFT(dev->bus);
262 pcidev_info->pdi_pcibus_info = bs;
263
264 if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
265 SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
266 } else {
267 SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
268 }
269
270 /* Only set up IRQ stuff if this device has a host bus context */
271 if (bs && sn_irq_info->irq_irq) {
272 pcidev_info->pdi_sn_irq_info = sn_irq_info;
273 dev->irq = pcidev_info->pdi_sn_irq_info->irq_irq;
274 sn_irq_fixup(dev, sn_irq_info);
275 } else {
276 pcidev_info->pdi_sn_irq_info = NULL;
277 kfree(sn_irq_info);
278 }
279}
280
281/*
282 * sn_common_bus_fixup - Perform platform specific bus fixup.
283 * Execute the ASIC specific fixup routine
284 * for this bus.
285 */
286void
287sn_common_bus_fixup(struct pci_bus *bus,
288 struct pcibus_bussoft *prom_bussoft_ptr)
289{
290 int cnode;
291 struct pci_controller *controller;
292 struct hubdev_info *hubdev_info;
293 int nasid;
294 void *provider_soft;
295 struct sn_pcibus_provider *provider;
296 struct sn_platform_data *sn_platform_data;
297
298 controller = PCI_CONTROLLER(bus);
299 /*
300 * Per-provider fixup. Copies the bus soft structure from prom
301 * to local area and links SN_PCIBUS_BUSSOFT().
302 */
303
304 if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES) {
305 printk(KERN_WARNING "sn_common_bus_fixup: Unsupported asic type, %d",
306 prom_bussoft_ptr->bs_asic_type);
307 return;
308 }
309
310 if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)
311 return; /* no further fixup necessary */
312
313 provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
314 if (provider == NULL)
315 panic("sn_common_bus_fixup: No provider registered for this asic type, %d",
316 prom_bussoft_ptr->bs_asic_type);
317
318 if (provider->bus_fixup)
319 provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr,
320 controller);
321 else
322 provider_soft = NULL;
323
324 /*
325 * Generic bus fixup goes here. Don't reference prom_bussoft_ptr
326 * after this point.
327 */
328 controller->platform_data = kzalloc(sizeof(struct sn_platform_data),
329 GFP_KERNEL);
330 if (controller->platform_data == NULL)
331 BUG();
332 sn_platform_data =
333 (struct sn_platform_data *) controller->platform_data;
334 sn_platform_data->provider_soft = provider_soft;
335 INIT_LIST_HEAD(&((struct sn_platform_data *)
336 controller->platform_data)->pcidev_info);
337 nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
338 cnode = nasid_to_cnodeid(nasid);
339 hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
340 SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
341 &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
342
343 /*
344 * If the node information we obtained during the fixup phase is
345 * invalid then set controller->node to -1 (undetermined)
346 */
347 if (controller->node >= num_online_nodes()) {
348 struct pcibus_bussoft *b = SN_PCIBUS_BUSSOFT(bus);
349
350 printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%u"
351 "L_IO=%lx L_MEM=%lx BASE=%lx\n",
352 b->bs_asic_type, b->bs_xid, b->bs_persist_busnum,
353 b->bs_legacy_io, b->bs_legacy_mem, b->bs_base);
354 printk(KERN_WARNING "on node %d but only %d nodes online."
355 "Association set to undetermined.\n",
356 controller->node, num_online_nodes());
357 controller->node = -1;
358 }
359}
360
361void sn_bus_store_sysdata(struct pci_dev *dev)
362{
363 struct sysdata_el *element;
364
365 element = kzalloc(sizeof(struct sysdata_el), GFP_KERNEL);
366 if (!element) {
Tony Luck34ef30c2007-05-10 09:39:41 -0700367 dev_dbg(&dev->dev, "%s: out of memory!\n", __FUNCTION__);
John Keller8ea60912006-10-04 16:49:25 -0500368 return;
369 }
370 element->sysdata = SN_PCIDEV_INFO(dev);
371 list_add(&element->entry, &sn_sysdata_list);
372}
373
374void sn_bus_free_sysdata(void)
375{
376 struct sysdata_el *element;
377 struct list_head *list, *safe;
378
379 list_for_each_safe(list, safe, &sn_sysdata_list) {
380 element = list_entry(list, struct sysdata_el, entry);
381 list_del(&element->entry);
382 list_del(&(((struct pcidev_info *)
383 (element->sysdata))->pdi_list));
384 kfree(element->sysdata);
385 kfree(element);
386 }
387 return;
388}
389
390/*
391 * hubdev_init_node() - Creates the HUB data structure and link them to it's
392 * own NODE specific data area.
393 */
394void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
395{
396 struct hubdev_info *hubdev_info;
397 int size;
398 pg_data_t *pg;
399
400 size = sizeof(struct hubdev_info);
401
402 if (node >= num_online_nodes()) /* Headless/memless IO nodes */
403 pg = NODE_DATA(0);
404 else
405 pg = NODE_DATA(node);
406
407 hubdev_info = (struct hubdev_info *)alloc_bootmem_node(pg, size);
408
409 npda->pdinfo = (void *)hubdev_info;
410}
411
412geoid_t
413cnodeid_get_geoid(cnodeid_t cnode)
414{
415 struct hubdev_info *hubdev;
416
417 hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
418 return hubdev->hdi_geoid;
419}
420
421void sn_generate_path(struct pci_bus *pci_bus, char *address)
422{
423 nasid_t nasid;
424 cnodeid_t cnode;
425 geoid_t geoid;
426 moduleid_t moduleid;
427 u16 bricktype;
428
429 nasid = NASID_GET(SN_PCIBUS_BUSSOFT(pci_bus)->bs_base);
430 cnode = nasid_to_cnodeid(nasid);
431 geoid = cnodeid_get_geoid(cnode);
432 moduleid = geo_module(geoid);
433
434 sprintf(address, "module_%c%c%c%c%.2d",
435 '0'+RACK_GET_CLASS(MODULE_GET_RACK(moduleid)),
436 '0'+RACK_GET_GROUP(MODULE_GET_RACK(moduleid)),
437 '0'+RACK_GET_NUM(MODULE_GET_RACK(moduleid)),
438 MODULE_GET_BTCHAR(moduleid), MODULE_GET_BPOS(moduleid));
439
440 /* Tollhouse requires slot id to be displayed */
441 bricktype = MODULE_GET_BTYPE(moduleid);
442 if ((bricktype == L1_BRICKTYPE_191010) ||
443 (bricktype == L1_BRICKTYPE_1932))
444 sprintf(address, "%s^%d", address, geo_slot(geoid));
445}
446
John Keller8ea60912006-10-04 16:49:25 -0500447void __devinit
448sn_pci_fixup_bus(struct pci_bus *bus)
449{
450
Len Brown647fb472007-02-02 22:14:22 -0500451 if (SN_ACPI_BASE_SUPPORT())
John Keller8ea60912006-10-04 16:49:25 -0500452 sn_acpi_bus_fixup(bus);
453 else
454 sn_bus_fixup(bus);
455}
456
457/*
458 * sn_io_early_init - Perform early IO (and some non-IO) initialization.
459 * In particular, setup the sn_pci_provider[] array.
460 * This needs to be done prior to any bus scanning
461 * (acpi_scan_init()) in the ACPI case, as the SN
462 * bus fixup code will reference the array.
463 */
464static int __init
465sn_io_early_init(void)
466{
467 int i;
468
469 if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
470 return 0;
471
John Keller6f09a922007-01-30 01:17:37 -0500472 /* we set the acpi revision to that of the DSDT table OEM rev. */
473 {
474 struct acpi_table_header *header = NULL;
475
476 acpi_get_table_by_index(ACPI_TABLE_INDEX_DSDT, &header);
477 BUG_ON(header == NULL);
478 sn_acpi_rev = header->oem_revision;
479 }
480
John Keller8ea60912006-10-04 16:49:25 -0500481 /*
482 * prime sn_pci_provider[]. Individial provider init routines will
483 * override their respective default entries.
484 */
485
486 for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
487 sn_pci_provider[i] = &sn_pci_default_provider;
488
489 pcibr_init_provider();
490 tioca_init_provider();
491 tioce_init_provider();
492
493 /*
494 * This is needed to avoid bounce limit checks in the blk layer
495 */
496 ia64_max_iommu_merge_mask = ~PAGE_MASK;
497
498 sn_irq_lh_init();
499 INIT_LIST_HEAD(&sn_sysdata_list);
500 sn_init_cpei_timer();
501
502#ifdef CONFIG_PROC_FS
503 register_sn_procfs();
504#endif
505
Len Brown647fb472007-02-02 22:14:22 -0500506 {
507 struct acpi_table_header *header;
508 (void)acpi_get_table_by_index(ACPI_TABLE_INDEX_DSDT, &header);
509 printk(KERN_INFO "ACPI DSDT OEM Rev 0x%x\n",
510 header->oem_revision);
511 }
512 if (SN_ACPI_BASE_SUPPORT())
John Keller8ea60912006-10-04 16:49:25 -0500513 sn_io_acpi_init();
514 else
515 sn_io_init();
516 return 0;
517}
518
519arch_initcall(sn_io_early_init);
520
521/*
522 * sn_io_late_init() - Perform any final platform specific IO initialization.
523 */
524
525int __init
526sn_io_late_init(void)
527{
528 struct pci_bus *bus;
529 struct pcibus_bussoft *bussoft;
530 cnodeid_t cnode;
531 nasid_t nasid;
532 cnodeid_t near_cnode;
533
534 if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
535 return 0;
536
537 /*
538 * Setup closest node in pci_controller->node for
539 * PIC, TIOCP, TIOCE (TIOCA does it during bus fixup using
540 * info from the PROM).
541 */
542 bus = NULL;
543 while ((bus = pci_find_next_bus(bus)) != NULL) {
544 bussoft = SN_PCIBUS_BUSSOFT(bus);
545 nasid = NASID_GET(bussoft->bs_base);
546 cnode = nasid_to_cnodeid(nasid);
547 if ((bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCP) ||
548 (bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCE)) {
549 /* TIO PCI Bridge: find nearest node with CPUs */
550 int e = sn_hwperf_get_nearest_node(cnode, NULL,
551 &near_cnode);
552 if (e < 0) {
553 near_cnode = (cnodeid_t)-1; /* use any node */
554 printk(KERN_WARNING "pcibr_bus_fixup: failed "
555 "to find near node with CPUs to TIO "
556 "node %d, err=%d\n", cnode, e);
557 }
558 PCI_CONTROLLER(bus)->node = near_cnode;
559 } else if (bussoft->bs_asic_type == PCIIO_ASIC_TYPE_PIC) {
560 PCI_CONTROLLER(bus)->node = cnode;
561 }
562 }
563
564 sn_ioif_inited = 1; /* SN I/O infrastructure now initialized */
565
566 return 0;
567}
568
569fs_initcall(sn_io_late_init);
570
John Keller8ea60912006-10-04 16:49:25 -0500571EXPORT_SYMBOL(sn_pci_unfixup_slot);
572EXPORT_SYMBOL(sn_bus_store_sysdata);
573EXPORT_SYMBOL(sn_bus_free_sysdata);
574EXPORT_SYMBOL(sn_generate_path);
575