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) 1992 - 1997, 2000-2005 Silicon Graphics, Inc. All rights reserved.
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/geo.h>
14 #include <asm/sn/io.h>
15 #include <asm/sn/pcibr_provider.h>
16 #include <asm/sn/pcibus_provider_defs.h>
17 #include <asm/sn/pcidev.h>
18 #include <asm/sn/simulator.h>
19 #include <asm/sn/sn_sal.h>
20 #include <asm/sn/tioca_provider.h>
21 #include <asm/sn/tioce_provider.h>
22 #include "xtalk/hubdev.h"
23 #include "xtalk/xwidgetdev.h"
25 static struct list_head sn_sysdata_list
;
27 /* sysdata list struct */
29 struct list_head entry
;
34 struct hubdev_info hubdev
;
38 moduleid_t id
; /* Module ID of this module */
39 struct slab_info slab_info
[MAX_SLABS
+ 1];
42 int sn_ioif_inited
= 0; /* SN I/O infrastructure initialized? */
44 struct sn_pcibus_provider
*sn_pci_provider
[PCIIO_ASIC_MAX_TYPES
]; /* indexed by asic type */
46 static int max_segment_number
= 0; /* Default highest segment number */
47 static int max_pcibus_number
= 255; /* Default highest pci bus number */
50 * Hooks and struct for unsupported pci providers
54 sn_default_pci_map(struct pci_dev
*pdev
, unsigned long paddr
, size_t size
)
60 sn_default_pci_unmap(struct pci_dev
*pdev
, dma_addr_t addr
, int direction
)
66 sn_default_pci_bus_fixup(struct pcibus_bussoft
*soft
, struct pci_controller
*controller
)
71 static struct sn_pcibus_provider sn_pci_default_provider
= {
72 .dma_map
= sn_default_pci_map
,
73 .dma_map_consistent
= sn_default_pci_map
,
74 .dma_unmap
= sn_default_pci_unmap
,
75 .bus_fixup
= sn_default_pci_bus_fixup
,
79 * Retrieve the DMA Flush List given nasid, widget, and device.
80 * This list is needed to implement the WAR - Flush DMA data on PIO Reads.
83 sal_get_device_dmaflush_list(u64 nasid
, u64 widget_num
, u64 device_num
,
87 struct ia64_sal_retval ret_stuff
;
91 SAL_CALL_NOLOCK(ret_stuff
,
92 (u64
) SN_SAL_IOIF_GET_DEVICE_DMAFLUSH_LIST
,
93 (u64
) nasid
, (u64
) widget_num
,
94 (u64
) device_num
, (u64
) address
, 0, 0, 0);
95 return ret_stuff
.status
;
100 * Retrieve the hub device info structure for the given nasid.
102 static inline u64
sal_get_hubdev_info(u64 handle
, u64 address
)
105 struct ia64_sal_retval ret_stuff
;
106 ret_stuff
.status
= 0;
109 SAL_CALL_NOLOCK(ret_stuff
,
110 (u64
) SN_SAL_IOIF_GET_HUBDEV_INFO
,
111 (u64
) handle
, (u64
) address
, 0, 0, 0, 0, 0);
116 * Retrieve the pci bus information given the bus number.
118 static inline u64
sal_get_pcibus_info(u64 segment
, u64 busnum
, u64 address
)
121 struct ia64_sal_retval ret_stuff
;
122 ret_stuff
.status
= 0;
125 SAL_CALL_NOLOCK(ret_stuff
,
126 (u64
) SN_SAL_IOIF_GET_PCIBUS_INFO
,
127 (u64
) segment
, (u64
) busnum
, (u64
) address
, 0, 0, 0, 0);
132 * Retrieve the pci device information given the bus and device|function number.
135 sal_get_pcidev_info(u64 segment
, u64 bus_number
, u64 devfn
, u64 pci_dev
,
138 struct ia64_sal_retval ret_stuff
;
139 ret_stuff
.status
= 0;
142 SAL_CALL_NOLOCK(ret_stuff
,
143 (u64
) SN_SAL_IOIF_GET_PCIDEV_INFO
,
144 (u64
) segment
, (u64
) bus_number
, (u64
) devfn
,
151 * sn_pcidev_info_get() - Retrieve the pcidev_info struct for the specified
154 inline struct pcidev_info
*
155 sn_pcidev_info_get(struct pci_dev
*dev
)
157 struct pcidev_info
*pcidev
;
159 list_for_each_entry(pcidev
,
160 &(SN_PCI_CONTROLLER(dev
)->pcidev_info
), pdi_list
) {
161 if (pcidev
->pdi_linux_pcidev
== dev
) {
169 * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
170 * each node in the system.
172 static void sn_fixup_ionodes(void)
174 struct sn_flush_device_kernel
*sn_flush_device_kernel
;
175 struct sn_flush_device_kernel
*dev_entry
;
176 struct hubdev_info
*hubdev
;
179 int i
, widget
, device
;
182 * Get SGI Specific HUB chipset information.
183 * Inform Prom that this kernel can support domain bus numbering.
185 for (i
= 0; i
< num_cnodes
; i
++) {
186 hubdev
= (struct hubdev_info
*)(NODEPDA(i
)->pdinfo
);
187 nasid
= cnodeid_to_nasid(i
);
188 hubdev
->max_segment_number
= 0xffffffff;
189 hubdev
->max_pcibus_number
= 0xff;
190 status
= sal_get_hubdev_info(nasid
, (u64
) __pa(hubdev
));
194 /* Save the largest Domain and pcibus numbers found. */
195 if (hubdev
->max_segment_number
) {
197 * Dealing with a Prom that supports segments.
199 max_segment_number
= hubdev
->max_segment_number
;
200 max_pcibus_number
= hubdev
->max_pcibus_number
;
203 /* Attach the error interrupt handlers */
205 ice_error_init(hubdev
);
207 hub_error_init(hubdev
);
209 for (widget
= 0; widget
<= HUB_WIDGET_ID_MAX
; widget
++)
210 hubdev
->hdi_xwidget_info
[widget
].xwi_hubinfo
= hubdev
;
212 if (!hubdev
->hdi_flush_nasid_list
.widget_p
)
215 hubdev
->hdi_flush_nasid_list
.widget_p
=
216 kmalloc((HUB_WIDGET_ID_MAX
+ 1) *
217 sizeof(struct sn_flush_device_kernel
*),
219 memset(hubdev
->hdi_flush_nasid_list
.widget_p
, 0x0,
220 (HUB_WIDGET_ID_MAX
+ 1) *
221 sizeof(struct sn_flush_device_kernel
*));
223 for (widget
= 0; widget
<= HUB_WIDGET_ID_MAX
; widget
++) {
224 sn_flush_device_kernel
= kmalloc(DEV_PER_WIDGET
*
226 sn_flush_device_kernel
),
228 if (!sn_flush_device_kernel
)
230 memset(sn_flush_device_kernel
, 0x0,
232 sizeof(struct sn_flush_device_kernel
));
234 dev_entry
= sn_flush_device_kernel
;
235 for (device
= 0; device
< DEV_PER_WIDGET
;
236 device
++,dev_entry
++) {
237 dev_entry
->common
= kmalloc(sizeof(struct
238 sn_flush_device_common
),
240 if (!dev_entry
->common
)
242 memset(dev_entry
->common
, 0x0, sizeof(struct
243 sn_flush_device_common
));
245 status
= sal_get_device_dmaflush_list(nasid
,
248 (u64
)(dev_entry
->common
));
252 spin_lock_init(&dev_entry
->sfdl_flush_lock
);
255 if (sn_flush_device_kernel
)
256 hubdev
->hdi_flush_nasid_list
.widget_p
[widget
] =
257 sn_flush_device_kernel
;
263 * sn_pci_window_fixup() - Create a pci_window for each device resource.
264 * Until ACPI support is added, we need this code
265 * to setup pci_windows for use by
266 * pcibios_bus_to_resource(),
267 * pcibios_resource_to_bus(), etc.
270 sn_pci_window_fixup(struct pci_dev
*dev
, unsigned int count
,
273 struct pci_controller
*controller
= PCI_CONTROLLER(dev
->bus
);
276 unsigned int new_count
;
277 struct pci_window
*new_window
;
281 idx
= controller
->windows
;
282 new_count
= controller
->windows
+ count
;
283 new_window
= kcalloc(new_count
, sizeof(struct pci_window
), GFP_KERNEL
);
284 if (new_window
== NULL
)
286 if (controller
->window
) {
287 memcpy(new_window
, controller
->window
,
288 sizeof(struct pci_window
) * controller
->windows
);
289 kfree(controller
->window
);
292 /* Setup a pci_window for each device resource. */
293 for (i
= 0; i
<= PCI_ROM_RESOURCE
; i
++) {
294 if (pci_addrs
[i
] == -1)
297 new_window
[idx
].offset
= dev
->resource
[i
].start
- pci_addrs
[i
];
298 new_window
[idx
].resource
= dev
->resource
[i
];
302 controller
->windows
= new_count
;
303 controller
->window
= new_window
;
306 void sn_pci_unfixup_slot(struct pci_dev
*dev
)
308 struct pci_dev
*host_pci_dev
= SN_PCIDEV_INFO(dev
)->host_pci_dev
;
311 pci_dev_put(host_pci_dev
);
316 * sn_pci_fixup_slot() - This routine sets up a slot's resources
317 * consistent with the Linux PCI abstraction layer. Resources acquired
318 * from our PCI provider include PIO maps to BAR space and interrupt
321 void sn_pci_fixup_slot(struct pci_dev
*dev
)
323 unsigned int count
= 0;
325 int segment
= pci_domain_nr(dev
->bus
);
327 struct pcibus_bussoft
*bs
;
328 struct pci_bus
*host_pci_bus
;
329 struct pci_dev
*host_pci_dev
;
330 struct pcidev_info
*pcidev_info
;
331 int64_t pci_addrs
[PCI_ROM_RESOURCE
+ 1];
332 struct sn_irq_info
*sn_irq_info
;
334 unsigned int bus_no
, devfn
;
336 pci_dev_get(dev
); /* for the sysdata pointer */
337 pcidev_info
= kzalloc(sizeof(struct pcidev_info
), GFP_KERNEL
);
338 if (pcidev_info
<= 0)
339 BUG(); /* Cannot afford to run out of memory */
341 sn_irq_info
= kmalloc(sizeof(struct sn_irq_info
), GFP_KERNEL
);
342 if (sn_irq_info
<= 0)
343 BUG(); /* Cannot afford to run out of memory */
344 memset(sn_irq_info
, 0, sizeof(struct sn_irq_info
));
346 /* Call to retrieve pci device information needed by kernel. */
347 status
= sal_get_pcidev_info((u64
) segment
, (u64
) dev
->bus
->number
,
349 (u64
) __pa(pcidev_info
),
350 (u64
) __pa(sn_irq_info
));
352 BUG(); /* Cannot get platform pci device information */
354 /* Add pcidev_info to list in sn_pci_controller struct */
355 list_add_tail(&pcidev_info
->pdi_list
,
356 &(SN_PCI_CONTROLLER(dev
->bus
)->pcidev_info
));
358 /* Copy over PIO Mapped Addresses */
359 for (idx
= 0; idx
<= PCI_ROM_RESOURCE
; idx
++) {
360 unsigned long start
, end
, addr
;
362 if (!pcidev_info
->pdi_pio_mapped_addr
[idx
]) {
367 start
= dev
->resource
[idx
].start
;
368 end
= dev
->resource
[idx
].end
;
374 pci_addrs
[idx
] = start
;
376 addr
= pcidev_info
->pdi_pio_mapped_addr
[idx
];
377 addr
= ((addr
<< 4) >> 4) | __IA64_UNCACHED_OFFSET
;
378 dev
->resource
[idx
].start
= addr
;
379 dev
->resource
[idx
].end
= addr
+ size
;
380 if (dev
->resource
[idx
].flags
& IORESOURCE_IO
)
381 dev
->resource
[idx
].parent
= &ioport_resource
;
383 dev
->resource
[idx
].parent
= &iomem_resource
;
385 /* Create a pci_window in the pci_controller struct for
386 * each device resource.
389 sn_pci_window_fixup(dev
, count
, pci_addrs
);
392 * Using the PROMs values for the PCI host bus, get the Linux
393 * PCI host_pci_dev struct and set up host bus linkages
396 bus_no
= (pcidev_info
->pdi_slot_host_handle
>> 32) & 0xff;
397 devfn
= pcidev_info
->pdi_slot_host_handle
& 0xffffffff;
398 host_pci_bus
= pci_find_bus(segment
, bus_no
);
399 host_pci_dev
= pci_get_slot(host_pci_bus
, devfn
);
401 pcidev_info
->host_pci_dev
= host_pci_dev
;
402 pcidev_info
->pdi_linux_pcidev
= dev
;
403 pcidev_info
->pdi_host_pcidev_info
= SN_PCIDEV_INFO(host_pci_dev
);
404 bs
= SN_PCIBUS_BUSSOFT(dev
->bus
);
405 pcidev_info
->pdi_pcibus_info
= bs
;
407 if (bs
&& bs
->bs_asic_type
< PCIIO_ASIC_MAX_TYPES
) {
408 SN_PCIDEV_BUSPROVIDER(dev
) = sn_pci_provider
[bs
->bs_asic_type
];
410 SN_PCIDEV_BUSPROVIDER(dev
) = &sn_pci_default_provider
;
413 /* Only set up IRQ stuff if this device has a host bus context */
414 if (bs
&& sn_irq_info
->irq_irq
) {
415 pcidev_info
->pdi_sn_irq_info
= sn_irq_info
;
416 dev
->irq
= pcidev_info
->pdi_sn_irq_info
->irq_irq
;
417 sn_irq_fixup(dev
, sn_irq_info
);
419 pcidev_info
->pdi_sn_irq_info
= NULL
;
425 * sn_pci_controller_fixup() - This routine sets up a bus's resources
426 * consistent with the Linux PCI abstraction layer.
428 void sn_pci_controller_fixup(int segment
, int busnum
, struct pci_bus
*bus
)
432 struct pci_controller
*controller
;
433 struct sn_pci_controller
*sn_controller
;
434 struct pcibus_bussoft
*prom_bussoft_ptr
;
435 struct hubdev_info
*hubdev_info
;
436 void *provider_soft
= NULL
;
437 struct sn_pcibus_provider
*provider
;
439 status
= sal_get_pcibus_info((u64
) segment
, (u64
) busnum
,
440 (u64
) ia64_tpa(&prom_bussoft_ptr
));
442 return; /*bus # does not exist */
443 prom_bussoft_ptr
= __va(prom_bussoft_ptr
);
445 /* Allocate a sn_pci_controller, which has a pci_controller struct
446 * as the first member.
448 sn_controller
= kzalloc(sizeof(struct sn_pci_controller
), GFP_KERNEL
);
451 INIT_LIST_HEAD(&sn_controller
->pcidev_info
);
452 controller
= &sn_controller
->pci_controller
;
453 controller
->segment
= segment
;
456 bus
= pci_scan_bus(busnum
, &pci_root_ops
, controller
);
458 goto error_return
; /* error, or bus already scanned */
463 goto error_return
; /* sysdata already alloc'd */
466 * Per-provider fixup. Copies the contents from prom to local
467 * area and links SN_PCIBUS_BUSSOFT().
470 if (prom_bussoft_ptr
->bs_asic_type
>= PCIIO_ASIC_MAX_TYPES
)
471 goto error_return
; /* unsupported asic type */
473 if (prom_bussoft_ptr
->bs_asic_type
== PCIIO_ASIC_TYPE_PPB
)
474 goto error_return
; /* no further fixup necessary */
476 provider
= sn_pci_provider
[prom_bussoft_ptr
->bs_asic_type
];
477 if (provider
== NULL
)
478 goto error_return
; /* no provider registerd for this asic */
480 bus
->sysdata
= controller
;
481 if (provider
->bus_fixup
)
482 provider_soft
= (*provider
->bus_fixup
) (prom_bussoft_ptr
, controller
);
484 if (provider_soft
== NULL
) {
485 /* fixup failed or not applicable */
491 * Setup pci_windows for legacy IO and MEM space.
492 * (Temporary until ACPI support is in place.)
494 controller
->window
= kcalloc(2, sizeof(struct pci_window
), GFP_KERNEL
);
495 if (controller
->window
== NULL
)
497 controller
->window
[0].offset
= prom_bussoft_ptr
->bs_legacy_io
;
498 controller
->window
[0].resource
.name
= "legacy_io";
499 controller
->window
[0].resource
.flags
= IORESOURCE_IO
;
500 controller
->window
[0].resource
.start
= prom_bussoft_ptr
->bs_legacy_io
;
501 controller
->window
[0].resource
.end
=
502 controller
->window
[0].resource
.start
+ 0xffff;
503 controller
->window
[0].resource
.parent
= &ioport_resource
;
504 controller
->window
[1].offset
= prom_bussoft_ptr
->bs_legacy_mem
;
505 controller
->window
[1].resource
.name
= "legacy_mem";
506 controller
->window
[1].resource
.flags
= IORESOURCE_MEM
;
507 controller
->window
[1].resource
.start
= prom_bussoft_ptr
->bs_legacy_mem
;
508 controller
->window
[1].resource
.end
=
509 controller
->window
[1].resource
.start
+ (1024 * 1024) - 1;
510 controller
->window
[1].resource
.parent
= &iomem_resource
;
511 controller
->windows
= 2;
514 * Generic bus fixup goes here. Don't reference prom_bussoft_ptr
518 PCI_CONTROLLER(bus
)->platform_data
= provider_soft
;
519 nasid
= NASID_GET(SN_PCIBUS_BUSSOFT(bus
)->bs_base
);
520 cnode
= nasid_to_cnodeid(nasid
);
521 hubdev_info
= (struct hubdev_info
*)(NODEPDA(cnode
)->pdinfo
);
522 SN_PCIBUS_BUSSOFT(bus
)->bs_xwidget_info
=
523 &(hubdev_info
->hdi_xwidget_info
[SN_PCIBUS_BUSSOFT(bus
)->bs_xid
]);
526 * If the node information we obtained during the fixup phase is invalid
527 * then set controller->node to -1 (undetermined)
529 if (controller
->node
>= num_online_nodes()) {
530 struct pcibus_bussoft
*b
= SN_PCIBUS_BUSSOFT(bus
);
532 printk(KERN_WARNING
"Device ASIC=%u XID=%u PBUSNUM=%u"
533 "L_IO=%lx L_MEM=%lx BASE=%lx\n",
534 b
->bs_asic_type
, b
->bs_xid
, b
->bs_persist_busnum
,
535 b
->bs_legacy_io
, b
->bs_legacy_mem
, b
->bs_base
);
536 printk(KERN_WARNING
"on node %d but only %d nodes online."
537 "Association set to undetermined.\n",
538 controller
->node
, num_online_nodes());
539 controller
->node
= -1;
545 kfree(sn_controller
);
549 void sn_bus_store_sysdata(struct pci_dev
*dev
)
551 struct sysdata_el
*element
;
553 element
= kzalloc(sizeof(struct sysdata_el
), GFP_KERNEL
);
555 dev_dbg(dev
, "%s: out of memory!\n", __FUNCTION__
);
558 element
->sysdata
= SN_PCIDEV_INFO(dev
);
559 list_add(&element
->entry
, &sn_sysdata_list
);
562 void sn_bus_free_sysdata(void)
564 struct sysdata_el
*element
;
565 struct list_head
*list
;
567 sn_sysdata_free_start
:
568 list_for_each(list
, &sn_sysdata_list
) {
569 element
= list_entry(list
, struct sysdata_el
, entry
);
570 list_del(&element
->entry
);
571 kfree(element
->sysdata
);
573 goto sn_sysdata_free_start
;
579 * Ugly hack to get PCI setup until we have a proper ACPI namespace.
582 #define PCI_BUSES_TO_SCAN 256
584 static int __init
sn_pci_init(void)
588 struct pci_dev
*pci_dev
= NULL
;
589 extern void sn_init_cpei_timer(void);
590 #ifdef CONFIG_PROC_FS
591 extern void register_sn_procfs(void);
594 if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
598 * prime sn_pci_provider[]. Individial provider init routines will
599 * override their respective default entries.
602 for (i
= 0; i
< PCIIO_ASIC_MAX_TYPES
; i
++)
603 sn_pci_provider
[i
] = &sn_pci_default_provider
;
605 pcibr_init_provider();
606 tioca_init_provider();
607 tioce_init_provider();
610 * This is needed to avoid bounce limit checks in the blk layer
612 ia64_max_iommu_merge_mask
= ~PAGE_MASK
;
615 INIT_LIST_HEAD(&sn_sysdata_list
);
616 sn_init_cpei_timer();
618 #ifdef CONFIG_PROC_FS
619 register_sn_procfs();
622 /* busses are not known yet ... */
623 for (i
= 0; i
<= max_segment_number
; i
++)
624 for (j
= 0; j
<= max_pcibus_number
; j
++)
625 sn_pci_controller_fixup(i
, j
, NULL
);
628 * Generic Linux PCI Layer has created the pci_bus and pci_dev
629 * structures - time for us to add our SN PLatform specific
634 pci_get_device(PCI_ANY_ID
, PCI_ANY_ID
, pci_dev
)) != NULL
)
635 sn_pci_fixup_slot(pci_dev
);
637 sn_ioif_inited
= 1; /* sn I/O infrastructure now initialized */
643 * hubdev_init_node() - Creates the HUB data structure and link them to it's
644 * own NODE specific data area.
646 void hubdev_init_node(nodepda_t
* npda
, cnodeid_t node
)
649 struct hubdev_info
*hubdev_info
;
651 if (node
>= num_online_nodes()) /* Headless/memless IO nodes */
653 (struct hubdev_info
*)alloc_bootmem_node(NODE_DATA(0),
658 (struct hubdev_info
*)alloc_bootmem_node(NODE_DATA(node
),
661 npda
->pdinfo
= (void *)hubdev_info
;
666 cnodeid_get_geoid(cnodeid_t cnode
)
669 struct hubdev_info
*hubdev
;
671 hubdev
= (struct hubdev_info
*)(NODEPDA(cnode
)->pdinfo
);
672 return hubdev
->hdi_geoid
;
676 subsys_initcall(sn_pci_init
);
677 EXPORT_SYMBOL(sn_pci_fixup_slot
);
678 EXPORT_SYMBOL(sn_pci_unfixup_slot
);
679 EXPORT_SYMBOL(sn_pci_controller_fixup
);
680 EXPORT_SYMBOL(sn_bus_store_sysdata
);
681 EXPORT_SYMBOL(sn_bus_free_sysdata
);