3 #include <linux/kernel.h>
4 #include <linux/string.h>
5 #include <linux/pci_regs.h>
6 #include <linux/module.h>
7 #include <linux/ioport.h>
8 #include <linux/etherdevice.h>
10 #include <asm/pci-bridge.h>
13 #define DBG(fmt...) do { printk(fmt); } while(0)
15 #define DBG(fmt...) do { } while(0)
24 /* Max address size we deal with */
25 #define OF_MAX_ADDR_CELLS 4
26 #define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \
29 static struct of_bus
*of_match_bus(struct device_node
*np
);
30 static int __of_address_to_resource(struct device_node
*dev
,
31 const u32
*addrp
, u64 size
, unsigned int flags
,
37 static void of_dump_addr(const char *s
, const u32
*addr
, int na
)
41 printk(" %08x", *(addr
++));
45 static void of_dump_addr(const char *s
, const u32
*addr
, int na
) { }
49 /* Callbacks for bus specific translators */
52 const char *addresses
;
53 int (*match
)(struct device_node
*parent
);
54 void (*count_cells
)(struct device_node
*child
,
55 int *addrc
, int *sizec
);
56 u64 (*map
)(u32
*addr
, const u32
*range
,
57 int na
, int ns
, int pna
);
58 int (*translate
)(u32
*addr
, u64 offset
, int na
);
59 unsigned int (*get_flags
)(const u32
*addr
);
64 * Default translator (generic bus)
67 static void of_bus_default_count_cells(struct device_node
*dev
,
68 int *addrc
, int *sizec
)
71 *addrc
= prom_n_addr_cells(dev
);
73 *sizec
= prom_n_size_cells(dev
);
76 static u64
of_bus_default_map(u32
*addr
, const u32
*range
,
77 int na
, int ns
, int pna
)
81 cp
= of_read_number(range
, na
);
82 s
= of_read_number(range
+ na
+ pna
, ns
);
83 da
= of_read_number(addr
, na
);
85 DBG("OF: default map, cp="PRu64
", s="PRu64
", da="PRu64
"\n",
88 if (da
< cp
|| da
>= (cp
+ s
))
93 static int of_bus_default_translate(u32
*addr
, u64 offset
, int na
)
95 u64 a
= of_read_number(addr
, na
);
96 memset(addr
, 0, na
* 4);
99 addr
[na
- 2] = a
>> 32;
100 addr
[na
- 1] = a
& 0xffffffffu
;
105 static unsigned int of_bus_default_get_flags(const u32
*addr
)
107 return IORESOURCE_MEM
;
113 * PCI bus specific translator
116 static int of_bus_pci_match(struct device_node
*np
)
118 /* "vci" is for the /chaos bridge on 1st-gen PCI powermacs */
119 return !strcmp(np
->type
, "pci") || !strcmp(np
->type
, "vci");
122 static void of_bus_pci_count_cells(struct device_node
*np
,
123 int *addrc
, int *sizec
)
131 static u64
of_bus_pci_map(u32
*addr
, const u32
*range
, int na
, int ns
, int pna
)
135 /* Check address type match */
136 if ((addr
[0] ^ range
[0]) & 0x03000000)
139 /* Read address values, skipping high cell */
140 cp
= of_read_number(range
+ 1, na
- 1);
141 s
= of_read_number(range
+ na
+ pna
, ns
);
142 da
= of_read_number(addr
+ 1, na
- 1);
144 DBG("OF: PCI map, cp="PRu64
", s="PRu64
", da="PRu64
"\n", cp
, s
, da
);
146 if (da
< cp
|| da
>= (cp
+ s
))
151 static int of_bus_pci_translate(u32
*addr
, u64 offset
, int na
)
153 return of_bus_default_translate(addr
+ 1, offset
, na
- 1);
156 static unsigned int of_bus_pci_get_flags(const u32
*addr
)
158 unsigned int flags
= 0;
161 switch((w
>> 24) & 0x03) {
163 flags
|= IORESOURCE_IO
;
165 case 0x02: /* 32 bits */
166 case 0x03: /* 64 bits */
167 flags
|= IORESOURCE_MEM
;
171 flags
|= IORESOURCE_PREFETCH
;
175 const u32
*of_get_pci_address(struct device_node
*dev
, int bar_no
, u64
*size
,
180 struct device_node
*parent
;
182 int onesize
, i
, na
, ns
;
184 /* Get parent & match bus type */
185 parent
= of_get_parent(dev
);
188 bus
= of_match_bus(parent
);
189 if (strcmp(bus
->name
, "pci")) {
193 bus
->count_cells(dev
, &na
, &ns
);
195 if (!OF_CHECK_COUNTS(na
, ns
))
198 /* Get "reg" or "assigned-addresses" property */
199 prop
= get_property(dev
, bus
->addresses
, &psize
);
205 for (i
= 0; psize
>= onesize
; psize
-= onesize
, prop
+= onesize
, i
++)
206 if ((prop
[0] & 0xff) == ((bar_no
* 4) + PCI_BASE_ADDRESS_0
)) {
208 *size
= of_read_number(prop
+ na
, ns
);
210 *flags
= bus
->get_flags(prop
);
215 EXPORT_SYMBOL(of_get_pci_address
);
217 int of_pci_address_to_resource(struct device_node
*dev
, int bar
,
224 addrp
= of_get_pci_address(dev
, bar
, &size
, &flags
);
227 return __of_address_to_resource(dev
, addrp
, size
, flags
, r
);
229 EXPORT_SYMBOL_GPL(of_pci_address_to_resource
);
231 static u8
of_irq_pci_swizzle(u8 slot
, u8 pin
)
233 return (((pin
- 1) + slot
) % 4) + 1;
236 int of_irq_map_pci(struct pci_dev
*pdev
, struct of_irq
*out_irq
)
238 struct device_node
*dn
, *ppnode
;
239 struct pci_dev
*ppdev
;
245 /* Check if we have a device node, if yes, fallback to standard OF
248 dn
= pci_device_to_OF_node(pdev
);
250 return of_irq_map_one(dn
, 0, out_irq
);
252 /* Ok, we don't, time to have fun. Let's start by building up an
253 * interrupt spec. we assume #interrupt-cells is 1, which is standard
254 * for PCI. If you do different, then don't use that routine.
256 rc
= pci_read_config_byte(pdev
, PCI_INTERRUPT_PIN
, &pin
);
263 /* Now we walk up the PCI tree */
266 /* Get the pci_dev of our parent */
267 ppdev
= pdev
->bus
->self
;
269 /* Ouch, it's a host bridge... */
272 ppnode
= pci_bus_to_OF_node(pdev
->bus
);
274 struct pci_controller
*host
;
275 host
= pci_bus_to_host(pdev
->bus
);
276 ppnode
= host
? host
->arch_data
: NULL
;
278 /* No node for host bridge ? give up */
282 /* We found a P2P bridge, check if it has a node */
283 ppnode
= pci_device_to_OF_node(ppdev
);
285 /* Ok, we have found a parent with a device-node, hand over to
286 * the OF parsing code.
287 * We build a unit address from the linux device to be used for
288 * resolution. Note that we use the linux bus number which may
289 * not match your firmware bus numbering.
290 * Fortunately, in most cases, interrupt-map-mask doesn't include
291 * the bus number as part of the matching.
292 * You should still be careful about that though if you intend
293 * to rely on this function (you ship a firmware that doesn't
294 * create device nodes for all PCI devices).
299 /* We can only get here if we hit a P2P bridge with no node,
300 * let's do standard swizzling and try again
302 lspec
= of_irq_pci_swizzle(PCI_SLOT(pdev
->devfn
), lspec
);
306 laddr
[0] = (pdev
->bus
->number
<< 16)
307 | (pdev
->devfn
<< 8);
308 laddr
[1] = laddr
[2] = 0;
309 return of_irq_map_raw(ppnode
, &lspec
, 1, laddr
, out_irq
);
311 EXPORT_SYMBOL_GPL(of_irq_map_pci
);
312 #endif /* CONFIG_PCI */
315 * ISA bus specific translator
318 static int of_bus_isa_match(struct device_node
*np
)
320 return !strcmp(np
->name
, "isa");
323 static void of_bus_isa_count_cells(struct device_node
*child
,
324 int *addrc
, int *sizec
)
332 static u64
of_bus_isa_map(u32
*addr
, const u32
*range
, int na
, int ns
, int pna
)
336 /* Check address type match */
337 if ((addr
[0] ^ range
[0]) & 0x00000001)
340 /* Read address values, skipping high cell */
341 cp
= of_read_number(range
+ 1, na
- 1);
342 s
= of_read_number(range
+ na
+ pna
, ns
);
343 da
= of_read_number(addr
+ 1, na
- 1);
345 DBG("OF: ISA map, cp="PRu64
", s="PRu64
", da="PRu64
"\n", cp
, s
, da
);
347 if (da
< cp
|| da
>= (cp
+ s
))
352 static int of_bus_isa_translate(u32
*addr
, u64 offset
, int na
)
354 return of_bus_default_translate(addr
+ 1, offset
, na
- 1);
357 static unsigned int of_bus_isa_get_flags(const u32
*addr
)
359 unsigned int flags
= 0;
363 flags
|= IORESOURCE_IO
;
365 flags
|= IORESOURCE_MEM
;
371 * Array of bus specific translators
374 static struct of_bus of_busses
[] = {
379 .addresses
= "assigned-addresses",
380 .match
= of_bus_pci_match
,
381 .count_cells
= of_bus_pci_count_cells
,
382 .map
= of_bus_pci_map
,
383 .translate
= of_bus_pci_translate
,
384 .get_flags
= of_bus_pci_get_flags
,
386 #endif /* CONFIG_PCI */
391 .match
= of_bus_isa_match
,
392 .count_cells
= of_bus_isa_count_cells
,
393 .map
= of_bus_isa_map
,
394 .translate
= of_bus_isa_translate
,
395 .get_flags
= of_bus_isa_get_flags
,
402 .count_cells
= of_bus_default_count_cells
,
403 .map
= of_bus_default_map
,
404 .translate
= of_bus_default_translate
,
405 .get_flags
= of_bus_default_get_flags
,
409 static struct of_bus
*of_match_bus(struct device_node
*np
)
413 for (i
= 0; i
< ARRAY_SIZE(of_busses
); i
++)
414 if (!of_busses
[i
].match
|| of_busses
[i
].match(np
))
415 return &of_busses
[i
];
420 static int of_translate_one(struct device_node
*parent
, struct of_bus
*bus
,
421 struct of_bus
*pbus
, u32
*addr
,
422 int na
, int ns
, int pna
)
427 u64 offset
= OF_BAD_ADDR
;
429 /* Normally, an absence of a "ranges" property means we are
430 * crossing a non-translatable boundary, and thus the addresses
431 * below the current not cannot be converted to CPU physical ones.
432 * Unfortunately, while this is very clear in the spec, it's not
433 * what Apple understood, and they do have things like /uni-n or
434 * /ht nodes with no "ranges" property and a lot of perfectly
435 * useable mapped devices below them. Thus we treat the absence of
436 * "ranges" as equivalent to an empty "ranges" property which means
437 * a 1:1 translation at that level. It's up to the caller not to try
438 * to translate addresses that aren't supposed to be translated in
439 * the first place. --BenH.
441 ranges
= get_property(parent
, "ranges", &rlen
);
442 if (ranges
== NULL
|| rlen
== 0) {
443 offset
= of_read_number(addr
, na
);
444 memset(addr
, 0, pna
* 4);
445 DBG("OF: no ranges, 1:1 translation\n");
449 DBG("OF: walking ranges...\n");
451 /* Now walk through the ranges */
453 rone
= na
+ pna
+ ns
;
454 for (; rlen
>= rone
; rlen
-= rone
, ranges
+= rone
) {
455 offset
= bus
->map(addr
, ranges
, na
, ns
, pna
);
456 if (offset
!= OF_BAD_ADDR
)
459 if (offset
== OF_BAD_ADDR
) {
460 DBG("OF: not found !\n");
463 memcpy(addr
, ranges
+ na
, 4 * pna
);
466 of_dump_addr("OF: parent translation for:", addr
, pna
);
467 DBG("OF: with offset: "PRu64
"\n", offset
);
469 /* Translate it into parent bus space */
470 return pbus
->translate(addr
, offset
, pna
);
475 * Translate an address from the device-tree into a CPU physical address,
476 * this walks up the tree and applies the various bus mappings on the
479 * Note: We consider that crossing any level with #size-cells == 0 to mean
480 * that translation is impossible (that is we are not dealing with a value
481 * that can be mapped to a cpu physical address). This is not really specified
482 * that way, but this is traditionally the way IBM at least do things
484 u64
of_translate_address(struct device_node
*dev
, const u32
*in_addr
)
486 struct device_node
*parent
= NULL
;
487 struct of_bus
*bus
, *pbus
;
488 u32 addr
[OF_MAX_ADDR_CELLS
];
489 int na
, ns
, pna
, pns
;
490 u64 result
= OF_BAD_ADDR
;
492 DBG("OF: ** translation for device %s **\n", dev
->full_name
);
494 /* Increase refcount at current level */
497 /* Get parent & match bus type */
498 parent
= of_get_parent(dev
);
501 bus
= of_match_bus(parent
);
503 /* Cound address cells & copy address locally */
504 bus
->count_cells(dev
, &na
, &ns
);
505 if (!OF_CHECK_COUNTS(na
, ns
)) {
506 printk(KERN_ERR
"prom_parse: Bad cell count for %s\n",
510 memcpy(addr
, in_addr
, na
* 4);
512 DBG("OF: bus is %s (na=%d, ns=%d) on %s\n",
513 bus
->name
, na
, ns
, parent
->full_name
);
514 of_dump_addr("OF: translating address:", addr
, na
);
518 /* Switch to parent bus */
521 parent
= of_get_parent(dev
);
523 /* If root, we have finished */
524 if (parent
== NULL
) {
525 DBG("OF: reached root node\n");
526 result
= of_read_number(addr
, na
);
530 /* Get new parent bus and counts */
531 pbus
= of_match_bus(parent
);
532 pbus
->count_cells(dev
, &pna
, &pns
);
533 if (!OF_CHECK_COUNTS(pna
, pns
)) {
534 printk(KERN_ERR
"prom_parse: Bad cell count for %s\n",
539 DBG("OF: parent bus is %s (na=%d, ns=%d) on %s\n",
540 pbus
->name
, pna
, pns
, parent
->full_name
);
542 /* Apply bus translation */
543 if (of_translate_one(dev
, bus
, pbus
, addr
, na
, ns
, pna
))
546 /* Complete the move up one level */
551 of_dump_addr("OF: one level translation:", addr
, na
);
559 EXPORT_SYMBOL(of_translate_address
);
561 const u32
*of_get_address(struct device_node
*dev
, int index
, u64
*size
,
566 struct device_node
*parent
;
568 int onesize
, i
, na
, ns
;
570 /* Get parent & match bus type */
571 parent
= of_get_parent(dev
);
574 bus
= of_match_bus(parent
);
575 bus
->count_cells(dev
, &na
, &ns
);
577 if (!OF_CHECK_COUNTS(na
, ns
))
580 /* Get "reg" or "assigned-addresses" property */
581 prop
= get_property(dev
, bus
->addresses
, &psize
);
587 for (i
= 0; psize
>= onesize
; psize
-= onesize
, prop
+= onesize
, i
++)
590 *size
= of_read_number(prop
+ na
, ns
);
592 *flags
= bus
->get_flags(prop
);
597 EXPORT_SYMBOL(of_get_address
);
599 static int __of_address_to_resource(struct device_node
*dev
, const u32
*addrp
,
600 u64 size
, unsigned int flags
,
605 if ((flags
& (IORESOURCE_IO
| IORESOURCE_MEM
)) == 0)
607 taddr
= of_translate_address(dev
, addrp
);
608 if (taddr
== OF_BAD_ADDR
)
610 memset(r
, 0, sizeof(struct resource
));
611 if (flags
& IORESOURCE_IO
) {
613 port
= pci_address_to_pio(taddr
);
614 if (port
== (unsigned long)-1)
617 r
->end
= port
+ size
- 1;
620 r
->end
= taddr
+ size
- 1;
627 int of_address_to_resource(struct device_node
*dev
, int index
,
634 addrp
= of_get_address(dev
, index
, &size
, &flags
);
637 return __of_address_to_resource(dev
, addrp
, size
, flags
, r
);
639 EXPORT_SYMBOL_GPL(of_address_to_resource
);
641 void of_parse_dma_window(struct device_node
*dn
, const void *dma_window_prop
,
642 unsigned long *busno
, unsigned long *phys
, unsigned long *size
)
644 const u32
*dma_window
;
646 const unsigned char *prop
;
648 dma_window
= dma_window_prop
;
650 /* busno is always one cell */
651 *busno
= *(dma_window
++);
653 prop
= get_property(dn
, "ibm,#dma-address-cells", NULL
);
655 prop
= get_property(dn
, "#address-cells", NULL
);
657 cells
= prop
? *(u32
*)prop
: prom_n_addr_cells(dn
);
658 *phys
= of_read_number(dma_window
, cells
);
662 prop
= get_property(dn
, "ibm,#dma-size-cells", NULL
);
663 cells
= prop
? *(u32
*)prop
: prom_n_size_cells(dn
);
664 *size
= of_read_number(dma_window
, cells
);
671 static unsigned int of_irq_workarounds
;
672 static struct device_node
*of_irq_dflt_pic
;
674 static struct device_node
*of_irq_find_parent(struct device_node
*child
)
676 struct device_node
*p
;
679 if (!of_node_get(child
))
683 parp
= get_property(child
, "interrupt-parent", NULL
);
685 p
= of_get_parent(child
);
687 if (of_irq_workarounds
& OF_IMAP_NO_PHANDLE
)
688 p
= of_node_get(of_irq_dflt_pic
);
690 p
= of_find_node_by_phandle(*parp
);
694 } while (p
&& get_property(p
, "#interrupt-cells", NULL
) == NULL
);
699 /* This doesn't need to be called if you don't have any special workaround
702 void of_irq_map_init(unsigned int flags
)
704 of_irq_workarounds
= flags
;
706 /* OldWorld, don't bother looking at other things */
707 if (flags
& OF_IMAP_OLDWORLD_MAC
)
710 /* If we don't have phandles, let's try to locate a default interrupt
711 * controller (happens when booting with BootX). We do a first match
712 * here, hopefully, that only ever happens on machines with one
715 if (flags
& OF_IMAP_NO_PHANDLE
) {
716 struct device_node
*np
;
718 for(np
= NULL
; (np
= of_find_all_nodes(np
)) != NULL
;) {
719 if (get_property(np
, "interrupt-controller", NULL
)
722 /* Skip /chosen/interrupt-controller */
723 if (strcmp(np
->name
, "chosen") == 0)
725 /* It seems like at least one person on this planet wants
726 * to use BootX on a machine with an AppleKiwi controller
727 * which happens to pretend to be an interrupt
730 if (strcmp(np
->name
, "AppleKiwi") == 0)
732 /* I think we found one ! */
733 of_irq_dflt_pic
= np
;
740 int of_irq_map_raw(struct device_node
*parent
, const u32
*intspec
, u32 ointsize
,
741 const u32
*addr
, struct of_irq
*out_irq
)
743 struct device_node
*ipar
, *tnode
, *old
= NULL
, *newpar
= NULL
;
744 const u32
*tmp
, *imap
, *imask
;
745 u32 intsize
= 1, addrsize
, newintsize
= 0, newaddrsize
= 0;
746 int imaplen
, match
, i
;
748 DBG("of_irq_map_raw: par=%s,intspec=[0x%08x 0x%08x...],ointsize=%d\n",
749 parent
->full_name
, intspec
[0], intspec
[1], ointsize
);
751 ipar
= of_node_get(parent
);
753 /* First get the #interrupt-cells property of the current cursor
754 * that tells us how to interpret the passed-in intspec. If there
755 * is none, we are nice and just walk up the tree
758 tmp
= get_property(ipar
, "#interrupt-cells", NULL
);
764 ipar
= of_irq_find_parent(ipar
);
768 DBG(" -> no parent found !\n");
772 DBG("of_irq_map_raw: ipar=%s, size=%d\n", ipar
->full_name
, intsize
);
774 if (ointsize
!= intsize
)
777 /* Look for this #address-cells. We have to implement the old linux
778 * trick of looking for the parent here as some device-trees rely on it
780 old
= of_node_get(ipar
);
782 tmp
= get_property(old
, "#address-cells", NULL
);
783 tnode
= of_get_parent(old
);
786 } while(old
&& tmp
== NULL
);
789 addrsize
= (tmp
== NULL
) ? 2 : *tmp
;
791 DBG(" -> addrsize=%d\n", addrsize
);
793 /* Now start the actual "proper" walk of the interrupt tree */
794 while (ipar
!= NULL
) {
795 /* Now check if cursor is an interrupt-controller and if it is
798 if (get_property(ipar
, "interrupt-controller", NULL
) != NULL
) {
799 DBG(" -> got it !\n");
800 memcpy(out_irq
->specifier
, intspec
,
801 intsize
* sizeof(u32
));
802 out_irq
->size
= intsize
;
803 out_irq
->controller
= ipar
;
808 /* Now look for an interrupt-map */
809 imap
= get_property(ipar
, "interrupt-map", &imaplen
);
810 /* No interrupt map, check for an interrupt parent */
812 DBG(" -> no map, getting parent\n");
813 newpar
= of_irq_find_parent(ipar
);
816 imaplen
/= sizeof(u32
);
818 /* Look for a mask */
819 imask
= get_property(ipar
, "interrupt-map-mask", NULL
);
821 /* If we were passed no "reg" property and we attempt to parse
822 * an interrupt-map, then #address-cells must be 0.
825 if (addr
== NULL
&& addrsize
!= 0) {
826 DBG(" -> no reg passed in when needed !\n");
830 /* Parse interrupt-map */
832 while (imaplen
> (addrsize
+ intsize
+ 1) && !match
) {
833 /* Compare specifiers */
835 for (i
= 0; i
< addrsize
&& match
; ++i
) {
836 u32 mask
= imask
? imask
[i
] : 0xffffffffu
;
837 match
= ((addr
[i
] ^ imap
[i
]) & mask
) == 0;
839 for (; i
< (addrsize
+ intsize
) && match
; ++i
) {
840 u32 mask
= imask
? imask
[i
] : 0xffffffffu
;
842 ((intspec
[i
-addrsize
] ^ imap
[i
]) & mask
) == 0;
844 imap
+= addrsize
+ intsize
;
845 imaplen
-= addrsize
+ intsize
;
847 DBG(" -> match=%d (imaplen=%d)\n", match
, imaplen
);
849 /* Get the interrupt parent */
850 if (of_irq_workarounds
& OF_IMAP_NO_PHANDLE
)
851 newpar
= of_node_get(of_irq_dflt_pic
);
853 newpar
= of_find_node_by_phandle((phandle
)*imap
);
857 /* Check if not found */
858 if (newpar
== NULL
) {
859 DBG(" -> imap parent not found !\n");
863 /* Get #interrupt-cells and #address-cells of new
866 tmp
= get_property(newpar
, "#interrupt-cells",
869 DBG(" -> parent lacks #interrupt-cells !\n");
873 tmp
= get_property(newpar
, "#address-cells",
875 newaddrsize
= (tmp
== NULL
) ? 0 : *tmp
;
877 DBG(" -> newintsize=%d, newaddrsize=%d\n",
878 newintsize
, newaddrsize
);
880 /* Check for malformed properties */
881 if (imaplen
< (newaddrsize
+ newintsize
))
884 imap
+= newaddrsize
+ newintsize
;
885 imaplen
-= newaddrsize
+ newintsize
;
887 DBG(" -> imaplen=%d\n", imaplen
);
893 old
= of_node_get(newpar
);
894 addrsize
= newaddrsize
;
895 intsize
= newintsize
;
896 intspec
= imap
- intsize
;
897 addr
= intspec
- addrsize
;
900 /* Iterate again with new parent */
901 DBG(" -> new parent: %s\n", newpar
? newpar
->full_name
: "<>");
913 EXPORT_SYMBOL_GPL(of_irq_map_raw
);
915 #if defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32)
916 static int of_irq_map_oldworld(struct device_node
*device
, int index
,
917 struct of_irq
*out_irq
)
923 * Old machines just have a list of interrupt numbers
924 * and no interrupt-controller nodes. We also have dodgy
925 * cases where the APPL,interrupts property is completely
926 * missing behind pci-pci bridges and we have to get it
927 * from the parent (the bridge itself, as apple just wired
928 * everything together on these)
931 ints
= get_property(device
, "AAPL,interrupts", &intlen
);
934 device
= device
->parent
;
935 if (device
&& strcmp(device
->type
, "pci") != 0)
940 intlen
/= sizeof(u32
);
945 out_irq
->controller
= NULL
;
946 out_irq
->specifier
[0] = ints
[index
];
951 #else /* defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32) */
952 static int of_irq_map_oldworld(struct device_node
*device
, int index
,
953 struct of_irq
*out_irq
)
957 #endif /* !(defined(CONFIG_PPC_PMAC) && defined(CONFIG_PPC32)) */
959 int of_irq_map_one(struct device_node
*device
, int index
, struct of_irq
*out_irq
)
961 struct device_node
*p
;
962 const u32
*intspec
, *tmp
, *addr
;
966 DBG("of_irq_map_one: dev=%s, index=%d\n", device
->full_name
, index
);
968 /* OldWorld mac stuff is "special", handle out of line */
969 if (of_irq_workarounds
& OF_IMAP_OLDWORLD_MAC
)
970 return of_irq_map_oldworld(device
, index
, out_irq
);
972 /* Get the interrupts property */
973 intspec
= get_property(device
, "interrupts", &intlen
);
976 intlen
/= sizeof(u32
);
978 /* Get the reg property (if any) */
979 addr
= get_property(device
, "reg", NULL
);
981 /* Look for the interrupt parent. */
982 p
= of_irq_find_parent(device
);
986 /* Get size of interrupt specifier */
987 tmp
= get_property(p
, "#interrupt-cells", NULL
);
994 DBG(" intsize=%d intlen=%d\n", intsize
, intlen
);
997 if ((index
+ 1) * intsize
> intlen
)
1000 /* Get new specifier and map it */
1001 res
= of_irq_map_raw(p
, intspec
+ index
* intsize
, intsize
,
1006 EXPORT_SYMBOL_GPL(of_irq_map_one
);
1009 * Search the device tree for the best MAC address to use. 'mac-address' is
1010 * checked first, because that is supposed to contain to "most recent" MAC
1011 * address. If that isn't set, then 'local-mac-address' is checked next,
1012 * because that is the default address. If that isn't set, then the obsolete
1013 * 'address' is checked, just in case we're using an old device tree.
1015 * Note that the 'address' property is supposed to contain a virtual address of
1016 * the register set, but some DTS files have redefined that property to be the
1019 * All-zero MAC addresses are rejected, because those could be properties that
1020 * exist in the device tree, but were not set by U-Boot. For example, the
1021 * DTS could define 'mac-address' and 'local-mac-address', with zero MAC
1022 * addresses. Some older U-Boots only initialized 'local-mac-address'. In
1023 * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists
1026 const void *of_get_mac_address(struct device_node
*np
)
1028 struct property
*pp
;
1030 pp
= of_find_property(np
, "mac-address", NULL
);
1031 if (pp
&& (pp
->length
== 6) && is_valid_ether_addr(pp
->value
))
1034 pp
= of_find_property(np
, "local-mac-address", NULL
);
1035 if (pp
&& (pp
->length
== 6) && is_valid_ether_addr(pp
->value
))
1038 pp
= of_find_property(np
, "address", NULL
);
1039 if (pp
&& (pp
->length
== 6) && is_valid_ether_addr(pp
->value
))
1044 EXPORT_SYMBOL(of_get_mac_address
);