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
6 * Copyright (C) 2006 Silicon Graphics, Inc. All rights reserved.
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>
28 #include <asm/sn/acpi.h>
30 extern void sn_init_cpei_timer(void);
31 extern void register_sn_procfs(void);
32 extern void sn_acpi_bus_fixup(struct pci_bus *);
33 extern void sn_bus_fixup(struct pci_bus *);
34 extern void sn_acpi_slot_fixup(struct pci_dev *, struct pcidev_info *);
35 extern void sn_more_slot_fixup(struct pci_dev *, struct pcidev_info *);
36 extern void sn_legacy_pci_window_fixup(struct pci_controller *, u64, u64);
37 extern void sn_io_acpi_init(void);
38 extern void sn_io_init(void);
41 static struct list_head sn_sysdata_list;
43 /* sysdata list struct */
45 struct list_head entry;
49 int sn_ioif_inited; /* SN I/O infrastructure initialized? */
51 struct sn_pcibus_provider *sn_pci_provider[PCIIO_ASIC_MAX_TYPES]; /* indexed by asic type */
54 * Hooks and struct for unsupported pci providers
58 sn_default_pci_map(struct pci_dev *pdev, unsigned long paddr, size_t size, int type)
64 sn_default_pci_unmap(struct pci_dev *pdev, dma_addr_t addr, int direction)
70 sn_default_pci_bus_fixup(struct pcibus_bussoft *soft, struct pci_controller *controller)
75 static struct sn_pcibus_provider sn_pci_default_provider = {
76 .dma_map = sn_default_pci_map,
77 .dma_map_consistent = sn_default_pci_map,
78 .dma_unmap = sn_default_pci_unmap,
79 .bus_fixup = sn_default_pci_bus_fixup,
83 * Retrieve the DMA Flush List given nasid, widget, and device.
84 * This list is needed to implement the WAR - Flush DMA data on PIO Reads.
87 sal_get_device_dmaflush_list(u64 nasid, u64 widget_num, u64 device_num,
90 struct ia64_sal_retval ret_stuff;
94 SAL_CALL_NOLOCK(ret_stuff,
95 (u64) SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST,
96 (u64) nasid, (u64) widget_num,
97 (u64) device_num, (u64) address, 0, 0, 0);
98 return ret_stuff.status;
102 * Retrieve the pci device information given the bus and device|function number.
105 sal_get_pcidev_info(u64 segment, u64 bus_number, u64 devfn, u64 pci_dev,
108 struct ia64_sal_retval ret_stuff;
109 ret_stuff.status = 0;
112 SAL_CALL_NOLOCK(ret_stuff,
113 (u64) SN_SAL_IOIF_GET_PCIDEV_INFO,
114 (u64) segment, (u64) bus_number, (u64) devfn,
121 * sn_pcidev_info_get() - Retrieve the pcidev_info struct for the specified
124 inline struct pcidev_info *
125 sn_pcidev_info_get(struct pci_dev *dev)
127 struct pcidev_info *pcidev;
129 list_for_each_entry(pcidev,
130 &(SN_PLATFORM_DATA(dev)->pcidev_info), pdi_list) {
131 if (pcidev->pdi_linux_pcidev == dev)
137 /* Older PROM flush WAR
139 * 01/16/06 -- This war will be in place until a new official PROM is released.
140 * Additionally note that the struct sn_flush_device_war also has to be
141 * removed from arch/ia64/sn/include/xtalk/hubdev.h
143 static u8 war_implemented = 0;
145 static s64 sn_device_fixup_war(u64 nasid, u64 widget, int device,
146 struct sn_flush_device_common *common)
148 struct sn_flush_device_war *war_list;
149 struct sn_flush_device_war *dev_entry;
150 struct ia64_sal_retval isrv = {0,0,0,0};
152 if (!war_implemented) {
153 printk(KERN_WARNING "PROM version < 4.50 -- implementing old "
158 war_list = kzalloc(DEV_PER_WIDGET * sizeof(*war_list), GFP_KERNEL);
162 SAL_CALL_NOLOCK(isrv, SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST,
163 nasid, widget, __pa(war_list), 0, 0, 0 ,0);
165 panic("sn_device_fixup_war failed: %s\n",
166 ia64_sal_strerror(isrv.status));
168 dev_entry = war_list + device;
169 memcpy(common,dev_entry, sizeof(*common));
176 * sn_common_hubdev_init() - This routine is called to initialize the HUB data
177 * structure for each node in the system.
180 sn_common_hubdev_init(struct hubdev_info *hubdev)
183 struct sn_flush_device_kernel *sn_flush_device_kernel;
184 struct sn_flush_device_kernel *dev_entry;
186 int widget, device, size;
188 /* Attach the error interrupt handlers */
189 if (hubdev->hdi_nasid & 1) /* If TIO */
190 ice_error_init(hubdev);
192 hub_error_init(hubdev);
194 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++)
195 hubdev->hdi_xwidget_info[widget].xwi_hubinfo = hubdev;
197 if (!hubdev->hdi_flush_nasid_list.widget_p)
200 size = (HUB_WIDGET_ID_MAX + 1) *
201 sizeof(struct sn_flush_device_kernel *);
202 hubdev->hdi_flush_nasid_list.widget_p =
203 kzalloc(size, GFP_KERNEL);
204 if (!hubdev->hdi_flush_nasid_list.widget_p)
207 for (widget = 0; widget <= HUB_WIDGET_ID_MAX; widget++) {
208 size = DEV_PER_WIDGET *
209 sizeof(struct sn_flush_device_kernel);
210 sn_flush_device_kernel = kzalloc(size, GFP_KERNEL);
211 if (!sn_flush_device_kernel)
214 dev_entry = sn_flush_device_kernel;
215 for (device = 0; device < DEV_PER_WIDGET;
216 device++, dev_entry++) {
217 size = sizeof(struct sn_flush_device_common);
218 dev_entry->common = kzalloc(size, GFP_KERNEL);
219 if (!dev_entry->common)
221 if (sn_prom_feature_available(PRF_DEVICE_FLUSH_LIST))
222 status = sal_get_device_dmaflush_list(
223 hubdev->hdi_nasid, widget, device,
224 (u64)(dev_entry->common));
226 status = sn_device_fixup_war(hubdev->hdi_nasid,
229 if (status != SALRET_OK)
230 panic("SAL call failed: %s\n",
231 ia64_sal_strerror(status));
233 spin_lock_init(&dev_entry->sfdl_flush_lock);
236 if (sn_flush_device_kernel)
237 hubdev->hdi_flush_nasid_list.widget_p[widget] =
238 sn_flush_device_kernel;
242 void sn_pci_unfixup_slot(struct pci_dev *dev)
244 struct pci_dev *host_pci_dev = SN_PCIDEV_INFO(dev)->host_pci_dev;
247 pci_dev_put(host_pci_dev);
252 * sn_pci_fixup_slot() - This routine sets up a slot's resources consistent
253 * with the Linux PCI abstraction layer. Resources
254 * acquired from our PCI provider include PIO maps
255 * to BAR space and interrupt objects.
257 void sn_pci_fixup_slot(struct pci_dev *dev)
259 int segment = pci_domain_nr(dev->bus);
261 struct pcibus_bussoft *bs;
262 struct pci_bus *host_pci_bus;
263 struct pci_dev *host_pci_dev;
264 struct pcidev_info *pcidev_info;
265 struct sn_irq_info *sn_irq_info;
266 unsigned int bus_no, devfn;
268 pci_dev_get(dev); /* for the sysdata pointer */
269 pcidev_info = kzalloc(sizeof(struct pcidev_info), GFP_KERNEL);
271 BUG(); /* Cannot afford to run out of memory */
273 sn_irq_info = kzalloc(sizeof(struct sn_irq_info), GFP_KERNEL);
275 BUG(); /* Cannot afford to run out of memory */
277 /* Call to retrieve pci device information needed by kernel. */
278 status = sal_get_pcidev_info((u64) segment, (u64) dev->bus->number,
280 (u64) __pa(pcidev_info),
281 (u64) __pa(sn_irq_info));
283 BUG(); /* Cannot get platform pci device information */
285 /* Add pcidev_info to list in pci_controller.platform_data */
286 list_add_tail(&pcidev_info->pdi_list,
287 &(SN_PLATFORM_DATA(dev->bus)->pcidev_info));
289 if (!SN_ACPI_BASE_SUPPORT())
290 sn_more_slot_fixup(dev, pcidev_info);
293 * Using the PROMs values for the PCI host bus, get the Linux
294 * PCI host_pci_dev struct and set up host bus linkages
297 bus_no = (pcidev_info->pdi_slot_host_handle >> 32) & 0xff;
298 devfn = pcidev_info->pdi_slot_host_handle & 0xffffffff;
299 host_pci_bus = pci_find_bus(segment, bus_no);
300 host_pci_dev = pci_get_slot(host_pci_bus, devfn);
302 pcidev_info->host_pci_dev = host_pci_dev;
303 pcidev_info->pdi_linux_pcidev = dev;
304 pcidev_info->pdi_host_pcidev_info = SN_PCIDEV_INFO(host_pci_dev);
305 bs = SN_PCIBUS_BUSSOFT(dev->bus);
306 pcidev_info->pdi_pcibus_info = bs;
308 if (bs && bs->bs_asic_type < PCIIO_ASIC_MAX_TYPES) {
309 SN_PCIDEV_BUSPROVIDER(dev) = sn_pci_provider[bs->bs_asic_type];
311 SN_PCIDEV_BUSPROVIDER(dev) = &sn_pci_default_provider;
314 /* Only set up IRQ stuff if this device has a host bus context */
315 if (bs && sn_irq_info->irq_irq) {
316 pcidev_info->pdi_sn_irq_info = sn_irq_info;
317 dev->irq = pcidev_info->pdi_sn_irq_info->irq_irq;
318 sn_irq_fixup(dev, sn_irq_info);
320 pcidev_info->pdi_sn_irq_info = NULL;
326 * sn_common_bus_fixup - Perform platform specific bus fixup.
327 * Execute the ASIC specific fixup routine
331 sn_common_bus_fixup(struct pci_bus *bus,
332 struct pcibus_bussoft *prom_bussoft_ptr)
335 struct pci_controller *controller;
336 struct hubdev_info *hubdev_info;
339 struct sn_pcibus_provider *provider;
340 struct sn_platform_data *sn_platform_data;
342 controller = PCI_CONTROLLER(bus);
344 * Per-provider fixup. Copies the bus soft structure from prom
345 * to local area and links SN_PCIBUS_BUSSOFT().
348 if (prom_bussoft_ptr->bs_asic_type >= PCIIO_ASIC_MAX_TYPES) {
349 printk(KERN_WARNING "sn_common_bus_fixup: Unsupported asic type, %d",
350 prom_bussoft_ptr->bs_asic_type);
354 if (prom_bussoft_ptr->bs_asic_type == PCIIO_ASIC_TYPE_PPB)
355 return; /* no further fixup necessary */
357 provider = sn_pci_provider[prom_bussoft_ptr->bs_asic_type];
358 if (provider == NULL)
359 panic("sn_common_bus_fixup: No provider registered for this asic type, %d",
360 prom_bussoft_ptr->bs_asic_type);
362 if (provider->bus_fixup)
363 provider_soft = (*provider->bus_fixup) (prom_bussoft_ptr,
366 provider_soft = NULL;
369 * Generic bus fixup goes here. Don't reference prom_bussoft_ptr
372 controller->platform_data = kzalloc(sizeof(struct sn_platform_data),
374 if (controller->platform_data == NULL)
377 (struct sn_platform_data *) controller->platform_data;
378 sn_platform_data->provider_soft = provider_soft;
379 INIT_LIST_HEAD(&((struct sn_platform_data *)
380 controller->platform_data)->pcidev_info);
381 nasid = NASID_GET(SN_PCIBUS_BUSSOFT(bus)->bs_base);
382 cnode = nasid_to_cnodeid(nasid);
383 hubdev_info = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
384 SN_PCIBUS_BUSSOFT(bus)->bs_xwidget_info =
385 &(hubdev_info->hdi_xwidget_info[SN_PCIBUS_BUSSOFT(bus)->bs_xid]);
388 * If the node information we obtained during the fixup phase is
389 * invalid then set controller->node to -1 (undetermined)
391 if (controller->node >= num_online_nodes()) {
392 struct pcibus_bussoft *b = SN_PCIBUS_BUSSOFT(bus);
394 printk(KERN_WARNING "Device ASIC=%u XID=%u PBUSNUM=%u"
395 "L_IO=%lx L_MEM=%lx BASE=%lx\n",
396 b->bs_asic_type, b->bs_xid, b->bs_persist_busnum,
397 b->bs_legacy_io, b->bs_legacy_mem, b->bs_base);
398 printk(KERN_WARNING "on node %d but only %d nodes online."
399 "Association set to undetermined.\n",
400 controller->node, num_online_nodes());
401 controller->node = -1;
405 void sn_bus_store_sysdata(struct pci_dev *dev)
407 struct sysdata_el *element;
409 element = kzalloc(sizeof(struct sysdata_el), GFP_KERNEL);
411 dev_dbg(dev, "%s: out of memory!\n", __FUNCTION__);
414 element->sysdata = SN_PCIDEV_INFO(dev);
415 list_add(&element->entry, &sn_sysdata_list);
418 void sn_bus_free_sysdata(void)
420 struct sysdata_el *element;
421 struct list_head *list, *safe;
423 list_for_each_safe(list, safe, &sn_sysdata_list) {
424 element = list_entry(list, struct sysdata_el, entry);
425 list_del(&element->entry);
426 list_del(&(((struct pcidev_info *)
427 (element->sysdata))->pdi_list));
428 kfree(element->sysdata);
435 * hubdev_init_node() - Creates the HUB data structure and link them to it's
436 * own NODE specific data area.
438 void hubdev_init_node(nodepda_t * npda, cnodeid_t node)
440 struct hubdev_info *hubdev_info;
444 size = sizeof(struct hubdev_info);
446 if (node >= num_online_nodes()) /* Headless/memless IO nodes */
449 pg = NODE_DATA(node);
451 hubdev_info = (struct hubdev_info *)alloc_bootmem_node(pg, size);
453 npda->pdinfo = (void *)hubdev_info;
457 cnodeid_get_geoid(cnodeid_t cnode)
459 struct hubdev_info *hubdev;
461 hubdev = (struct hubdev_info *)(NODEPDA(cnode)->pdinfo);
462 return hubdev->hdi_geoid;
465 void sn_generate_path(struct pci_bus *pci_bus, char *address)
473 nasid = NASID_GET(SN_PCIBUS_BUSSOFT(pci_bus)->bs_base);
474 cnode = nasid_to_cnodeid(nasid);
475 geoid = cnodeid_get_geoid(cnode);
476 moduleid = geo_module(geoid);
478 sprintf(address, "module_%c%c%c%c%.2d",
479 '0'+RACK_GET_CLASS(MODULE_GET_RACK(moduleid)),
480 '0'+RACK_GET_GROUP(MODULE_GET_RACK(moduleid)),
481 '0'+RACK_GET_NUM(MODULE_GET_RACK(moduleid)),
482 MODULE_GET_BTCHAR(moduleid), MODULE_GET_BPOS(moduleid));
484 /* Tollhouse requires slot id to be displayed */
485 bricktype = MODULE_GET_BTYPE(moduleid);
486 if ((bricktype == L1_BRICKTYPE_191010) ||
487 (bricktype == L1_BRICKTYPE_1932))
488 sprintf(address, "%s^%d", address, geo_slot(geoid));
492 * sn_pci_fixup_bus() - Perform SN specific setup of software structs
493 * (pcibus_bussoft, pcidev_info) and hardware
494 * registers, for the specified bus and devices under it.
497 sn_pci_fixup_bus(struct pci_bus *bus)
500 if (SN_ACPI_BASE_SUPPORT())
501 sn_acpi_bus_fixup(bus);
507 * sn_io_early_init - Perform early IO (and some non-IO) initialization.
508 * In particular, setup the sn_pci_provider[] array.
509 * This needs to be done prior to any bus scanning
510 * (acpi_scan_init()) in the ACPI case, as the SN
511 * bus fixup code will reference the array.
514 sn_io_early_init(void)
518 if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
522 * prime sn_pci_provider[]. Individial provider init routines will
523 * override their respective default entries.
526 for (i = 0; i < PCIIO_ASIC_MAX_TYPES; i++)
527 sn_pci_provider[i] = &sn_pci_default_provider;
529 pcibr_init_provider();
530 tioca_init_provider();
531 tioce_init_provider();
534 * This is needed to avoid bounce limit checks in the blk layer
536 ia64_max_iommu_merge_mask = ~PAGE_MASK;
539 INIT_LIST_HEAD(&sn_sysdata_list);
540 sn_init_cpei_timer();
542 #ifdef CONFIG_PROC_FS
543 register_sn_procfs();
546 printk(KERN_INFO "ACPI DSDT OEM Rev 0x%x\n",
547 acpi_gbl_DSDT->oem_revision);
548 if (SN_ACPI_BASE_SUPPORT())
555 arch_initcall(sn_io_early_init);
558 * sn_io_late_init() - Perform any final platform specific IO initialization.
562 sn_io_late_init(void)
565 struct pcibus_bussoft *bussoft;
568 cnodeid_t near_cnode;
570 if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
574 * Setup closest node in pci_controller->node for
575 * PIC, TIOCP, TIOCE (TIOCA does it during bus fixup using
576 * info from the PROM).
579 while ((bus = pci_find_next_bus(bus)) != NULL) {
580 bussoft = SN_PCIBUS_BUSSOFT(bus);
581 nasid = NASID_GET(bussoft->bs_base);
582 cnode = nasid_to_cnodeid(nasid);
583 if ((bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCP) ||
584 (bussoft->bs_asic_type == PCIIO_ASIC_TYPE_TIOCE)) {
585 /* TIO PCI Bridge: find nearest node with CPUs */
586 int e = sn_hwperf_get_nearest_node(cnode, NULL,
589 near_cnode = (cnodeid_t)-1; /* use any node */
590 printk(KERN_WARNING "pcibr_bus_fixup: failed "
591 "to find near node with CPUs to TIO "
592 "node %d, err=%d\n", cnode, e);
594 PCI_CONTROLLER(bus)->node = near_cnode;
595 } else if (bussoft->bs_asic_type == PCIIO_ASIC_TYPE_PIC) {
596 PCI_CONTROLLER(bus)->node = cnode;
600 sn_ioif_inited = 1; /* SN I/O infrastructure now initialized */
605 fs_initcall(sn_io_late_init);
607 EXPORT_SYMBOL(sn_pci_fixup_slot);
608 EXPORT_SYMBOL(sn_pci_unfixup_slot);
609 EXPORT_SYMBOL(sn_bus_store_sysdata);
610 EXPORT_SYMBOL(sn_bus_free_sysdata);
611 EXPORT_SYMBOL(sn_generate_path);