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
) {
168 /* Older PROM flush WAR
170 * 01/16/06 -- This war will be in place until a new official PROM is released.
171 * Additionally note that the struct sn_flush_device_war also has to be
172 * removed from arch/ia64/sn/include/xtalk/hubdev.h
174 static u8 war_implemented
= 0;
176 static void sn_device_fixup_war(u64 nasid
, u64 widget
, int device
,
177 struct sn_flush_device_common
*common
)
179 struct sn_flush_device_war
*war_list
;
180 struct sn_flush_device_war
*dev_entry
;
181 struct ia64_sal_retval isrv
= {0,0,0,0};
183 if (!war_implemented
) {
184 printk(KERN_WARNING
"PROM version < 4.50 -- implementing old "
189 war_list
= kzalloc(DEV_PER_WIDGET
* sizeof(*war_list
), GFP_KERNEL
);
193 SAL_CALL_NOLOCK(isrv
, SN_SAL_IOIF_GET_WIDGET_DMAFLUSH_LIST
,
194 nasid
, widget
, __pa(war_list
), 0, 0, 0 ,0);
196 panic("sn_device_fixup_war failed: %s\n",
197 ia64_sal_strerror(isrv
.status
));
199 dev_entry
= war_list
+ device
;
200 memcpy(common
,dev_entry
, sizeof(*common
));
206 * sn_fixup_ionodes() - This routine initializes the HUB data strcuture for
207 * each node in the system.
209 static void sn_fixup_ionodes(void)
211 struct sn_flush_device_kernel
*sn_flush_device_kernel
;
212 struct sn_flush_device_kernel
*dev_entry
;
213 struct hubdev_info
*hubdev
;
216 int i
, widget
, device
;
219 * Get SGI Specific HUB chipset information.
220 * Inform Prom that this kernel can support domain bus numbering.
222 for (i
= 0; i
< num_cnodes
; i
++) {
223 hubdev
= (struct hubdev_info
*)(NODEPDA(i
)->pdinfo
);
224 nasid
= cnodeid_to_nasid(i
);
225 hubdev
->max_segment_number
= 0xffffffff;
226 hubdev
->max_pcibus_number
= 0xff;
227 status
= sal_get_hubdev_info(nasid
, (u64
) __pa(hubdev
));
231 /* Save the largest Domain and pcibus numbers found. */
232 if (hubdev
->max_segment_number
) {
234 * Dealing with a Prom that supports segments.
236 max_segment_number
= hubdev
->max_segment_number
;
237 max_pcibus_number
= hubdev
->max_pcibus_number
;
240 /* Attach the error interrupt handlers */
242 ice_error_init(hubdev
);
244 hub_error_init(hubdev
);
246 for (widget
= 0; widget
<= HUB_WIDGET_ID_MAX
; widget
++)
247 hubdev
->hdi_xwidget_info
[widget
].xwi_hubinfo
= hubdev
;
249 if (!hubdev
->hdi_flush_nasid_list
.widget_p
)
252 hubdev
->hdi_flush_nasid_list
.widget_p
=
253 kmalloc((HUB_WIDGET_ID_MAX
+ 1) *
254 sizeof(struct sn_flush_device_kernel
*),
256 memset(hubdev
->hdi_flush_nasid_list
.widget_p
, 0x0,
257 (HUB_WIDGET_ID_MAX
+ 1) *
258 sizeof(struct sn_flush_device_kernel
*));
260 for (widget
= 0; widget
<= HUB_WIDGET_ID_MAX
; widget
++) {
261 sn_flush_device_kernel
= kmalloc(DEV_PER_WIDGET
*
263 sn_flush_device_kernel
),
265 if (!sn_flush_device_kernel
)
267 memset(sn_flush_device_kernel
, 0x0,
269 sizeof(struct sn_flush_device_kernel
));
271 dev_entry
= sn_flush_device_kernel
;
272 for (device
= 0; device
< DEV_PER_WIDGET
;
273 device
++,dev_entry
++) {
274 dev_entry
->common
= kmalloc(sizeof(struct
275 sn_flush_device_common
),
277 if (!dev_entry
->common
)
279 memset(dev_entry
->common
, 0x0, sizeof(struct
280 sn_flush_device_common
));
282 status
= sal_get_device_dmaflush_list(nasid
,
285 (u64
)(dev_entry
->common
));
287 if (sn_sal_rev() < 0x0450) {
288 /* shortlived WAR for older
291 sn_device_fixup_war(nasid
,
300 spin_lock_init(&dev_entry
->sfdl_flush_lock
);
303 if (sn_flush_device_kernel
)
304 hubdev
->hdi_flush_nasid_list
.widget_p
[widget
] =
305 sn_flush_device_kernel
;
311 * sn_pci_window_fixup() - Create a pci_window for each device resource.
312 * Until ACPI support is added, we need this code
313 * to setup pci_windows for use by
314 * pcibios_bus_to_resource(),
315 * pcibios_resource_to_bus(), etc.
318 sn_pci_window_fixup(struct pci_dev
*dev
, unsigned int count
,
321 struct pci_controller
*controller
= PCI_CONTROLLER(dev
->bus
);
324 unsigned int new_count
;
325 struct pci_window
*new_window
;
329 idx
= controller
->windows
;
330 new_count
= controller
->windows
+ count
;
331 new_window
= kcalloc(new_count
, sizeof(struct pci_window
), GFP_KERNEL
);
332 if (new_window
== NULL
)
334 if (controller
->window
) {
335 memcpy(new_window
, controller
->window
,
336 sizeof(struct pci_window
) * controller
->windows
);
337 kfree(controller
->window
);
340 /* Setup a pci_window for each device resource. */
341 for (i
= 0; i
<= PCI_ROM_RESOURCE
; i
++) {
342 if (pci_addrs
[i
] == -1)
345 new_window
[idx
].offset
= dev
->resource
[i
].start
- pci_addrs
[i
];
346 new_window
[idx
].resource
= dev
->resource
[i
];
350 controller
->windows
= new_count
;
351 controller
->window
= new_window
;
354 void sn_pci_unfixup_slot(struct pci_dev
*dev
)
356 struct pci_dev
*host_pci_dev
= SN_PCIDEV_INFO(dev
)->host_pci_dev
;
359 pci_dev_put(host_pci_dev
);
364 * sn_pci_fixup_slot() - This routine sets up a slot's resources
365 * consistent with the Linux PCI abstraction layer. Resources acquired
366 * from our PCI provider include PIO maps to BAR space and interrupt
369 void sn_pci_fixup_slot(struct pci_dev
*dev
)
371 unsigned int count
= 0;
373 int segment
= pci_domain_nr(dev
->bus
);
375 struct pcibus_bussoft
*bs
;
376 struct pci_bus
*host_pci_bus
;
377 struct pci_dev
*host_pci_dev
;
378 struct pcidev_info
*pcidev_info
;
379 s64 pci_addrs
[PCI_ROM_RESOURCE
+ 1];
380 struct sn_irq_info
*sn_irq_info
;
382 unsigned int bus_no
, devfn
;
384 pci_dev_get(dev
); /* for the sysdata pointer */
385 pcidev_info
= kzalloc(sizeof(struct pcidev_info
), GFP_KERNEL
);
386 if (pcidev_info
<= 0)
387 BUG(); /* Cannot afford to run out of memory */
389 sn_irq_info
= kmalloc(sizeof(struct sn_irq_info
), GFP_KERNEL
);
390 if (sn_irq_info
<= 0)
391 BUG(); /* Cannot afford to run out of memory */
392 memset(sn_irq_info
, 0, sizeof(struct sn_irq_info
));
394 /* Call to retrieve pci device information needed by kernel. */
395 status
= sal_get_pcidev_info((u64
) segment
, (u64
) dev
->bus
->number
,
397 (u64
) __pa(pcidev_info
),
398 (u64
) __pa(sn_irq_info
));
400 BUG(); /* Cannot get platform pci device information */
402 /* Add pcidev_info to list in sn_pci_controller struct */
403 list_add_tail(&pcidev_info
->pdi_list
,
404 &(SN_PCI_CONTROLLER(dev
->bus
)->pcidev_info
));
406 /* Copy over PIO Mapped Addresses */
407 for (idx
= 0; idx
<= PCI_ROM_RESOURCE
; idx
++) {
408 unsigned long start
, end
, addr
;
410 if (!pcidev_info
->pdi_pio_mapped_addr
[idx
]) {
415 start
= dev
->resource
[idx
].start
;
416 end
= dev
->resource
[idx
].end
;
422 pci_addrs
[idx
] = start
;
424 addr
= pcidev_info
->pdi_pio_mapped_addr
[idx
];
425 addr
= ((addr
<< 4) >> 4) | __IA64_UNCACHED_OFFSET
;
426 dev
->resource
[idx
].start
= addr
;
427 dev
->resource
[idx
].end
= addr
+ size
;
428 if (dev
->resource
[idx
].flags
& IORESOURCE_IO
)
429 dev
->resource
[idx
].parent
= &ioport_resource
;
431 dev
->resource
[idx
].parent
= &iomem_resource
;
433 /* Create a pci_window in the pci_controller struct for
434 * each device resource.
437 sn_pci_window_fixup(dev
, count
, pci_addrs
);
440 * Using the PROMs values for the PCI host bus, get the Linux
441 * PCI host_pci_dev struct and set up host bus linkages
444 bus_no
= (pcidev_info
->pdi_slot_host_handle
>> 32) & 0xff;
445 devfn
= pcidev_info
->pdi_slot_host_handle
& 0xffffffff;
446 host_pci_bus
= pci_find_bus(segment
, bus_no
);
447 host_pci_dev
= pci_get_slot(host_pci_bus
, devfn
);
449 pcidev_info
->host_pci_dev
= host_pci_dev
;
450 pcidev_info
->pdi_linux_pcidev
= dev
;
451 pcidev_info
->pdi_host_pcidev_info
= SN_PCIDEV_INFO(host_pci_dev
);
452 bs
= SN_PCIBUS_BUSSOFT(dev
->bus
);
453 pcidev_info
->pdi_pcibus_info
= bs
;
455 if (bs
&& bs
->bs_asic_type
< PCIIO_ASIC_MAX_TYPES
) {
456 SN_PCIDEV_BUSPROVIDER(dev
) = sn_pci_provider
[bs
->bs_asic_type
];
458 SN_PCIDEV_BUSPROVIDER(dev
) = &sn_pci_default_provider
;
461 /* Only set up IRQ stuff if this device has a host bus context */
462 if (bs
&& sn_irq_info
->irq_irq
) {
463 pcidev_info
->pdi_sn_irq_info
= sn_irq_info
;
464 dev
->irq
= pcidev_info
->pdi_sn_irq_info
->irq_irq
;
465 sn_irq_fixup(dev
, sn_irq_info
);
467 pcidev_info
->pdi_sn_irq_info
= NULL
;
473 * sn_pci_controller_fixup() - This routine sets up a bus's resources
474 * consistent with the Linux PCI abstraction layer.
476 void sn_pci_controller_fixup(int segment
, int busnum
, struct pci_bus
*bus
)
480 struct pci_controller
*controller
;
481 struct sn_pci_controller
*sn_controller
;
482 struct pcibus_bussoft
*prom_bussoft_ptr
;
483 struct hubdev_info
*hubdev_info
;
484 void *provider_soft
= NULL
;
485 struct sn_pcibus_provider
*provider
;
487 status
= sal_get_pcibus_info((u64
) segment
, (u64
) busnum
,
488 (u64
) ia64_tpa(&prom_bussoft_ptr
));
490 return; /*bus # does not exist */
491 prom_bussoft_ptr
= __va(prom_bussoft_ptr
);
493 /* Allocate a sn_pci_controller, which has a pci_controller struct
494 * as the first member.
496 sn_controller
= kzalloc(sizeof(struct sn_pci_controller
), GFP_KERNEL
);
499 INIT_LIST_HEAD(&sn_controller
->pcidev_info
);
500 controller
= &sn_controller
->pci_controller
;
501 controller
->segment
= segment
;
504 bus
= pci_scan_bus(busnum
, &pci_root_ops
, controller
);
506 goto error_return
; /* error, or bus already scanned */
511 goto error_return
; /* sysdata already alloc'd */
514 * Per-provider fixup. Copies the contents from prom to local
515 * area and links SN_PCIBUS_BUSSOFT().
518 if (prom_bussoft_ptr
->bs_asic_type
>= PCIIO_ASIC_MAX_TYPES
)
519 goto error_return
; /* unsupported asic type */
521 if (prom_bussoft_ptr
->bs_asic_type
== PCIIO_ASIC_TYPE_PPB
)
522 goto error_return
; /* no further fixup necessary */
524 provider
= sn_pci_provider
[prom_bussoft_ptr
->bs_asic_type
];
525 if (provider
== NULL
)
526 goto error_return
; /* no provider registerd for this asic */
528 bus
->sysdata
= controller
;
529 if (provider
->bus_fixup
)
530 provider_soft
= (*provider
->bus_fixup
) (prom_bussoft_ptr
, controller
);
532 if (provider_soft
== NULL
) {
533 /* fixup failed or not applicable */
539 * Setup pci_windows for legacy IO and MEM space.
540 * (Temporary until ACPI support is in place.)
542 controller
->window
= kcalloc(2, sizeof(struct pci_window
), GFP_KERNEL
);
543 if (controller
->window
== NULL
)
545 controller
->window
[0].offset
= prom_bussoft_ptr
->bs_legacy_io
;
546 controller
->window
[0].resource
.name
= "legacy_io";
547 controller
->window
[0].resource
.flags
= IORESOURCE_IO
;
548 controller
->window
[0].resource
.start
= prom_bussoft_ptr
->bs_legacy_io
;
549 controller
->window
[0].resource
.end
=
550 controller
->window
[0].resource
.start
+ 0xffff;
551 controller
->window
[0].resource
.parent
= &ioport_resource
;
552 controller
->window
[1].offset
= prom_bussoft_ptr
->bs_legacy_mem
;
553 controller
->window
[1].resource
.name
= "legacy_mem";
554 controller
->window
[1].resource
.flags
= IORESOURCE_MEM
;
555 controller
->window
[1].resource
.start
= prom_bussoft_ptr
->bs_legacy_mem
;
556 controller
->window
[1].resource
.end
=
557 controller
->window
[1].resource
.start
+ (1024 * 1024) - 1;
558 controller
->window
[1].resource
.parent
= &iomem_resource
;
559 controller
->windows
= 2;
562 * Generic bus fixup goes here. Don't reference prom_bussoft_ptr
566 PCI_CONTROLLER(bus
)->platform_data
= provider_soft
;
567 nasid
= NASID_GET(SN_PCIBUS_BUSSOFT(bus
)->bs_base
);
568 cnode
= nasid_to_cnodeid(nasid
);
569 hubdev_info
= (struct hubdev_info
*)(NODEPDA(cnode
)->pdinfo
);
570 SN_PCIBUS_BUSSOFT(bus
)->bs_xwidget_info
=
571 &(hubdev_info
->hdi_xwidget_info
[SN_PCIBUS_BUSSOFT(bus
)->bs_xid
]);
574 * If the node information we obtained during the fixup phase is invalid
575 * then set controller->node to -1 (undetermined)
577 if (controller
->node
>= num_online_nodes()) {
578 struct pcibus_bussoft
*b
= SN_PCIBUS_BUSSOFT(bus
);
580 printk(KERN_WARNING
"Device ASIC=%u XID=%u PBUSNUM=%u"
581 "L_IO=%lx L_MEM=%lx BASE=%lx\n",
582 b
->bs_asic_type
, b
->bs_xid
, b
->bs_persist_busnum
,
583 b
->bs_legacy_io
, b
->bs_legacy_mem
, b
->bs_base
);
584 printk(KERN_WARNING
"on node %d but only %d nodes online."
585 "Association set to undetermined.\n",
586 controller
->node
, num_online_nodes());
587 controller
->node
= -1;
593 kfree(sn_controller
);
597 void sn_bus_store_sysdata(struct pci_dev
*dev
)
599 struct sysdata_el
*element
;
601 element
= kzalloc(sizeof(struct sysdata_el
), GFP_KERNEL
);
603 dev_dbg(dev
, "%s: out of memory!\n", __FUNCTION__
);
606 element
->sysdata
= SN_PCIDEV_INFO(dev
);
607 list_add(&element
->entry
, &sn_sysdata_list
);
610 void sn_bus_free_sysdata(void)
612 struct sysdata_el
*element
;
613 struct list_head
*list
;
615 sn_sysdata_free_start
:
616 list_for_each(list
, &sn_sysdata_list
) {
617 element
= list_entry(list
, struct sysdata_el
, entry
);
618 list_del(&element
->entry
);
619 kfree(element
->sysdata
);
621 goto sn_sysdata_free_start
;
627 * Ugly hack to get PCI setup until we have a proper ACPI namespace.
630 #define PCI_BUSES_TO_SCAN 256
632 static int __init
sn_pci_init(void)
636 struct pci_dev
*pci_dev
= NULL
;
637 extern void sn_init_cpei_timer(void);
638 #ifdef CONFIG_PROC_FS
639 extern void register_sn_procfs(void);
642 if (!ia64_platform_is("sn2") || IS_RUNNING_ON_FAKE_PROM())
646 * prime sn_pci_provider[]. Individial provider init routines will
647 * override their respective default entries.
650 for (i
= 0; i
< PCIIO_ASIC_MAX_TYPES
; i
++)
651 sn_pci_provider
[i
] = &sn_pci_default_provider
;
653 pcibr_init_provider();
654 tioca_init_provider();
655 tioce_init_provider();
658 * This is needed to avoid bounce limit checks in the blk layer
660 ia64_max_iommu_merge_mask
= ~PAGE_MASK
;
663 INIT_LIST_HEAD(&sn_sysdata_list
);
664 sn_init_cpei_timer();
666 #ifdef CONFIG_PROC_FS
667 register_sn_procfs();
670 /* busses are not known yet ... */
671 for (i
= 0; i
<= max_segment_number
; i
++)
672 for (j
= 0; j
<= max_pcibus_number
; j
++)
673 sn_pci_controller_fixup(i
, j
, NULL
);
676 * Generic Linux PCI Layer has created the pci_bus and pci_dev
677 * structures - time for us to add our SN PLatform specific
682 pci_get_device(PCI_ANY_ID
, PCI_ANY_ID
, pci_dev
)) != NULL
)
683 sn_pci_fixup_slot(pci_dev
);
685 sn_ioif_inited
= 1; /* sn I/O infrastructure now initialized */
691 * hubdev_init_node() - Creates the HUB data structure and link them to it's
692 * own NODE specific data area.
694 void hubdev_init_node(nodepda_t
* npda
, cnodeid_t node
)
697 struct hubdev_info
*hubdev_info
;
699 if (node
>= num_online_nodes()) /* Headless/memless IO nodes */
701 (struct hubdev_info
*)alloc_bootmem_node(NODE_DATA(0),
706 (struct hubdev_info
*)alloc_bootmem_node(NODE_DATA(node
),
709 npda
->pdinfo
= (void *)hubdev_info
;
714 cnodeid_get_geoid(cnodeid_t cnode
)
717 struct hubdev_info
*hubdev
;
719 hubdev
= (struct hubdev_info
*)(NODEPDA(cnode
)->pdinfo
);
720 return hubdev
->hdi_geoid
;
724 subsys_initcall(sn_pci_init
);
725 EXPORT_SYMBOL(sn_pci_fixup_slot
);
726 EXPORT_SYMBOL(sn_pci_unfixup_slot
);
727 EXPORT_SYMBOL(sn_pci_controller_fixup
);
728 EXPORT_SYMBOL(sn_bus_store_sysdata
);
729 EXPORT_SYMBOL(sn_bus_free_sysdata
);