2 * cistpl.c -- 16-bit PCMCIA Card Information Structure parser
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 * The initial developer of the original code is David A. Hinds
9 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
10 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
12 * (C) 1999 David A. Hinds
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/kernel.h>
18 #include <linux/string.h>
19 #include <linux/major.h>
20 #include <linux/errno.h>
21 #include <linux/timer.h>
22 #include <linux/slab.h>
24 #include <linux/pci.h>
25 #include <linux/ioport.h>
27 #include <asm/byteorder.h>
28 #include <asm/unaligned.h>
30 #include <pcmcia/ss.h>
31 #include <pcmcia/cs.h>
32 #include <pcmcia/cisreg.h>
33 #include <pcmcia/cistpl.h>
34 #include "cs_internal.h"
36 static const u_char mantissa
[] = {
37 10, 12, 13, 15, 20, 25, 30, 35,
38 40, 45, 50, 55, 60, 70, 80, 90
41 static const u_int exponent
[] = {
42 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
45 /* Convert an extended speed byte to a time in nanoseconds */
46 #define SPEED_CVT(v) \
47 (mantissa[(((v)>>3)&15)-1] * exponent[(v)&7] / 10)
48 /* Convert a power byte to a current in 0.1 microamps */
49 #define POWER_CVT(v) \
50 (mantissa[((v)>>3)&15] * exponent[(v)&7] / 10)
51 #define POWER_SCALE(v) (exponent[(v)&7])
53 /* Upper limit on reasonable # of tuples */
54 #define MAX_TUPLES 200
58 module_param(cis_width
, int, 0444);
60 void release_cis_mem(struct pcmcia_socket
*s
)
62 mutex_lock(&s
->ops_mutex
);
63 if (s
->cis_mem
.flags
& MAP_ACTIVE
) {
64 s
->cis_mem
.flags
&= ~MAP_ACTIVE
;
65 s
->ops
->set_mem_map(s
, &s
->cis_mem
);
67 release_resource(s
->cis_mem
.res
);
68 kfree(s
->cis_mem
.res
);
69 s
->cis_mem
.res
= NULL
;
74 mutex_unlock(&s
->ops_mutex
);
78 * set_cis_map() - map the card memory at "card_offset" into virtual space.
80 * If flags & MAP_ATTRIB, map the attribute space, otherwise
81 * map the memory space.
83 * Must be called with ops_mutex held.
85 static void __iomem
*set_cis_map(struct pcmcia_socket
*s
,
86 unsigned int card_offset
, unsigned int flags
)
88 pccard_mem_map
*mem
= &s
->cis_mem
;
91 if (!(s
->features
& SS_CAP_STATIC_MAP
) && (mem
->res
== NULL
)) {
92 mem
->res
= pcmcia_find_mem_region(0, s
->map_size
,
94 if (mem
->res
== NULL
) {
95 dev_printk(KERN_NOTICE
, &s
->dev
,
96 "cs: unable to map card memory!\n");
102 if (!(s
->features
& SS_CAP_STATIC_MAP
) && (!s
->cis_virt
))
103 s
->cis_virt
= ioremap(mem
->res
->start
, s
->map_size
);
105 mem
->card_start
= card_offset
;
108 ret
= s
->ops
->set_mem_map(s
, mem
);
110 iounmap(s
->cis_virt
);
115 if (s
->features
& SS_CAP_STATIC_MAP
) {
117 iounmap(s
->cis_virt
);
118 s
->cis_virt
= ioremap(mem
->static_start
, s
->map_size
);
125 /* Bits in attr field */
127 #define IS_INDIRECT 8
130 * pcmcia_read_cis_mem() - low-level function to read CIS memory
132 * must be called with ops_mutex held
134 int pcmcia_read_cis_mem(struct pcmcia_socket
*s
, int attr
, u_int addr
,
135 u_int len
, void *ptr
)
137 void __iomem
*sys
, *end
;
138 unsigned char *buf
= ptr
;
140 dev_dbg(&s
->dev
, "pcmcia_read_cis_mem(%d, %#x, %u)\n", attr
, addr
, len
);
142 if (attr
& IS_INDIRECT
) {
143 /* Indirect accesses use a bunch of special registers at fixed
144 locations in common memory */
145 u_char flags
= ICTRL0_COMMON
|ICTRL0_AUTOINC
|ICTRL0_BYTEGRAN
;
146 if (attr
& IS_ATTR
) {
148 flags
= ICTRL0_AUTOINC
;
151 sys
= set_cis_map(s
, 0, MAP_ACTIVE
|
152 ((cis_width
) ? MAP_16BIT
: 0));
154 dev_dbg(&s
->dev
, "could not map memory\n");
155 memset(ptr
, 0xff, len
);
159 writeb(flags
, sys
+CISREG_ICTRL0
);
160 writeb(addr
& 0xff, sys
+CISREG_IADDR0
);
161 writeb((addr
>>8) & 0xff, sys
+CISREG_IADDR1
);
162 writeb((addr
>>16) & 0xff, sys
+CISREG_IADDR2
);
163 writeb((addr
>>24) & 0xff, sys
+CISREG_IADDR3
);
164 for ( ; len
> 0; len
--, buf
++)
165 *buf
= readb(sys
+CISREG_IDATA0
);
167 u_int inc
= 1, card_offset
, flags
;
169 if (addr
> CISTPL_MAX_CIS_SIZE
)
171 "attempt to read CIS mem at addr %#x", addr
);
173 flags
= MAP_ACTIVE
| ((cis_width
) ? MAP_16BIT
: 0);
180 card_offset
= addr
& ~(s
->map_size
-1);
182 sys
= set_cis_map(s
, card_offset
, flags
);
184 dev_dbg(&s
->dev
, "could not map memory\n");
185 memset(ptr
, 0xff, len
);
188 end
= sys
+ s
->map_size
;
189 sys
= sys
+ (addr
& (s
->map_size
-1));
190 for ( ; len
> 0; len
--, buf
++, sys
+= inc
) {
195 card_offset
+= s
->map_size
;
199 dev_dbg(&s
->dev
, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n",
200 *(u_char
*)(ptr
+0), *(u_char
*)(ptr
+1),
201 *(u_char
*)(ptr
+2), *(u_char
*)(ptr
+3));
207 * pcmcia_write_cis_mem() - low-level function to write CIS memory
209 * Probably only useful for writing one-byte registers. Must be called
210 * with ops_mutex held.
212 void pcmcia_write_cis_mem(struct pcmcia_socket
*s
, int attr
, u_int addr
,
213 u_int len
, void *ptr
)
215 void __iomem
*sys
, *end
;
216 unsigned char *buf
= ptr
;
219 "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr
, addr
, len
);
221 if (attr
& IS_INDIRECT
) {
222 /* Indirect accesses use a bunch of special registers at fixed
223 locations in common memory */
224 u_char flags
= ICTRL0_COMMON
|ICTRL0_AUTOINC
|ICTRL0_BYTEGRAN
;
225 if (attr
& IS_ATTR
) {
227 flags
= ICTRL0_AUTOINC
;
230 sys
= set_cis_map(s
, 0, MAP_ACTIVE
|
231 ((cis_width
) ? MAP_16BIT
: 0));
233 dev_dbg(&s
->dev
, "could not map memory\n");
234 return; /* FIXME: Error */
237 writeb(flags
, sys
+CISREG_ICTRL0
);
238 writeb(addr
& 0xff, sys
+CISREG_IADDR0
);
239 writeb((addr
>>8) & 0xff, sys
+CISREG_IADDR1
);
240 writeb((addr
>>16) & 0xff, sys
+CISREG_IADDR2
);
241 writeb((addr
>>24) & 0xff, sys
+CISREG_IADDR3
);
242 for ( ; len
> 0; len
--, buf
++)
243 writeb(*buf
, sys
+CISREG_IDATA0
);
245 u_int inc
= 1, card_offset
, flags
;
247 flags
= MAP_ACTIVE
| ((cis_width
) ? MAP_16BIT
: 0);
248 if (attr
& IS_ATTR
) {
254 card_offset
= addr
& ~(s
->map_size
-1);
256 sys
= set_cis_map(s
, card_offset
, flags
);
258 dev_dbg(&s
->dev
, "could not map memory\n");
259 return; /* FIXME: error */
262 end
= sys
+ s
->map_size
;
263 sys
= sys
+ (addr
& (s
->map_size
-1));
264 for ( ; len
> 0; len
--, buf
++, sys
+= inc
) {
269 card_offset
+= s
->map_size
;
277 * read_cis_cache() - read CIS memory or its associated cache
279 * This is a wrapper around read_cis_mem, with the same interface,
280 * but which caches information, for cards whose CIS may not be
281 * readable all the time.
283 static int read_cis_cache(struct pcmcia_socket
*s
, int attr
, u_int addr
,
284 size_t len
, void *ptr
)
286 struct cis_cache_entry
*cis
;
289 if (s
->state
& SOCKET_CARDBUS
)
292 mutex_lock(&s
->ops_mutex
);
294 if (s
->fake_cis_len
>= addr
+len
)
295 memcpy(ptr
, s
->fake_cis
+addr
, len
);
297 memset(ptr
, 0xff, len
);
300 mutex_unlock(&s
->ops_mutex
);
304 list_for_each_entry(cis
, &s
->cis_cache
, node
) {
305 if (cis
->addr
== addr
&& cis
->len
== len
&& cis
->attr
== attr
) {
306 memcpy(ptr
, cis
->cache
, len
);
307 mutex_unlock(&s
->ops_mutex
);
312 ret
= pcmcia_read_cis_mem(s
, attr
, addr
, len
, ptr
);
315 /* Copy data into the cache */
316 cis
= kmalloc(sizeof(struct cis_cache_entry
) + len
, GFP_KERNEL
);
321 memcpy(cis
->cache
, ptr
, len
);
322 list_add(&cis
->node
, &s
->cis_cache
);
325 mutex_unlock(&s
->ops_mutex
);
331 remove_cis_cache(struct pcmcia_socket
*s
, int attr
, u_int addr
, u_int len
)
333 struct cis_cache_entry
*cis
;
335 mutex_lock(&s
->ops_mutex
);
336 list_for_each_entry(cis
, &s
->cis_cache
, node
)
337 if (cis
->addr
== addr
&& cis
->len
== len
&& cis
->attr
== attr
) {
338 list_del(&cis
->node
);
342 mutex_unlock(&s
->ops_mutex
);
346 * destroy_cis_cache() - destroy the CIS cache
347 * @s: pcmcia_socket for which CIS cache shall be destroyed
349 * This destroys the CIS cache but keeps any fake CIS alive. Must be
350 * called with ops_mutex held.
352 void destroy_cis_cache(struct pcmcia_socket
*s
)
354 struct list_head
*l
, *n
;
355 struct cis_cache_entry
*cis
;
357 list_for_each_safe(l
, n
, &s
->cis_cache
) {
358 cis
= list_entry(l
, struct cis_cache_entry
, node
);
359 list_del(&cis
->node
);
365 * verify_cis_cache() - does the CIS match what is in the CIS cache?
367 int verify_cis_cache(struct pcmcia_socket
*s
)
369 struct cis_cache_entry
*cis
;
373 if (s
->state
& SOCKET_CARDBUS
)
376 buf
= kmalloc(256, GFP_KERNEL
);
378 dev_printk(KERN_WARNING
, &s
->dev
,
379 "no memory for verifying CIS\n");
382 mutex_lock(&s
->ops_mutex
);
383 list_for_each_entry(cis
, &s
->cis_cache
, node
) {
389 ret
= pcmcia_read_cis_mem(s
, cis
->attr
, cis
->addr
, len
, buf
);
390 if (ret
|| memcmp(buf
, cis
->cache
, len
) != 0) {
392 mutex_unlock(&s
->ops_mutex
);
397 mutex_unlock(&s
->ops_mutex
);
402 * pcmcia_replace_cis() - use a replacement CIS instead of the card's CIS
404 * For really bad cards, we provide a facility for uploading a
407 int pcmcia_replace_cis(struct pcmcia_socket
*s
,
408 const u8
*data
, const size_t len
)
410 if (len
> CISTPL_MAX_CIS_SIZE
) {
411 dev_printk(KERN_WARNING
, &s
->dev
, "replacement CIS too big\n");
414 mutex_lock(&s
->ops_mutex
);
416 s
->fake_cis
= kmalloc(len
, GFP_KERNEL
);
417 if (s
->fake_cis
== NULL
) {
418 dev_printk(KERN_WARNING
, &s
->dev
, "no memory to replace CIS\n");
419 mutex_unlock(&s
->ops_mutex
);
422 s
->fake_cis_len
= len
;
423 memcpy(s
->fake_cis
, data
, len
);
424 dev_info(&s
->dev
, "Using replacement CIS\n");
425 mutex_unlock(&s
->ops_mutex
);
429 /* The high-level CIS tuple services */
431 typedef struct tuple_flags
{
438 #define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space)
439 #define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link)
440 #define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn)
441 #define SPACE(f) (((tuple_flags *)(&(f)))->space)
443 int pccard_get_first_tuple(struct pcmcia_socket
*s
, unsigned int function
,
449 if (!(s
->state
& SOCKET_PRESENT
) || (s
->state
& SOCKET_CARDBUS
))
451 tuple
->TupleLink
= tuple
->Flags
= 0;
453 /* Assume presence of a LONGLINK_C to address 0 */
454 tuple
->CISOffset
= tuple
->LinkOffset
= 0;
455 SPACE(tuple
->Flags
) = HAS_LINK(tuple
->Flags
) = 1;
457 if ((s
->functions
> 1) && !(tuple
->Attributes
& TUPLE_RETURN_COMMON
)) {
458 cisdata_t req
= tuple
->DesiredTuple
;
459 tuple
->DesiredTuple
= CISTPL_LONGLINK_MFC
;
460 if (pccard_get_next_tuple(s
, function
, tuple
) == 0) {
461 tuple
->DesiredTuple
= CISTPL_LINKTARGET
;
462 if (pccard_get_next_tuple(s
, function
, tuple
) != 0)
465 tuple
->CISOffset
= tuple
->TupleLink
= 0;
466 tuple
->DesiredTuple
= req
;
468 return pccard_get_next_tuple(s
, function
, tuple
);
471 static int follow_link(struct pcmcia_socket
*s
, tuple_t
*tuple
)
477 if (MFC_FN(tuple
->Flags
)) {
478 /* Get indirect link from the MFC tuple */
479 ret
= read_cis_cache(s
, LINK_SPACE(tuple
->Flags
),
480 tuple
->LinkOffset
, 5, link
);
483 ofs
= get_unaligned_le32(link
+ 1);
484 SPACE(tuple
->Flags
) = (link
[0] == CISTPL_MFC_ATTR
);
485 /* Move to the next indirect link */
486 tuple
->LinkOffset
+= 5;
487 MFC_FN(tuple
->Flags
)--;
488 } else if (HAS_LINK(tuple
->Flags
)) {
489 ofs
= tuple
->LinkOffset
;
490 SPACE(tuple
->Flags
) = LINK_SPACE(tuple
->Flags
);
491 HAS_LINK(tuple
->Flags
) = 0;
495 if (SPACE(tuple
->Flags
)) {
496 /* This is ugly, but a common CIS error is to code the long
497 link offset incorrectly, so we check the right spot... */
498 ret
= read_cis_cache(s
, SPACE(tuple
->Flags
), ofs
, 5, link
);
501 if ((link
[0] == CISTPL_LINKTARGET
) && (link
[1] >= 3) &&
502 (strncmp(link
+2, "CIS", 3) == 0))
504 remove_cis_cache(s
, SPACE(tuple
->Flags
), ofs
, 5);
505 /* Then, we try the wrong spot... */
508 ret
= read_cis_cache(s
, SPACE(tuple
->Flags
), ofs
, 5, link
);
511 if ((link
[0] == CISTPL_LINKTARGET
) && (link
[1] >= 3) &&
512 (strncmp(link
+2, "CIS", 3) == 0))
514 remove_cis_cache(s
, SPACE(tuple
->Flags
), ofs
, 5);
518 int pccard_get_next_tuple(struct pcmcia_socket
*s
, unsigned int function
,
527 if (!(s
->state
& SOCKET_PRESENT
) || (s
->state
& SOCKET_CARDBUS
))
530 link
[1] = tuple
->TupleLink
;
531 ofs
= tuple
->CISOffset
+ tuple
->TupleLink
;
532 attr
= SPACE(tuple
->Flags
);
534 for (i
= 0; i
< MAX_TUPLES
; i
++) {
536 link
[0] = CISTPL_END
;
538 ret
= read_cis_cache(s
, attr
, ofs
, 2, link
);
541 if (link
[0] == CISTPL_NULL
) {
547 /* End of chain? Follow long link if possible */
548 if (link
[0] == CISTPL_END
) {
549 ofs
= follow_link(s
, tuple
);
552 attr
= SPACE(tuple
->Flags
);
553 ret
= read_cis_cache(s
, attr
, ofs
, 2, link
);
558 /* Is this a link tuple? Make a note of it */
559 if ((link
[0] == CISTPL_LONGLINK_A
) ||
560 (link
[0] == CISTPL_LONGLINK_C
) ||
561 (link
[0] == CISTPL_LONGLINK_MFC
) ||
562 (link
[0] == CISTPL_LINKTARGET
) ||
563 (link
[0] == CISTPL_INDIRECT
) ||
564 (link
[0] == CISTPL_NO_LINK
)) {
566 case CISTPL_LONGLINK_A
:
567 HAS_LINK(tuple
->Flags
) = 1;
568 LINK_SPACE(tuple
->Flags
) = attr
| IS_ATTR
;
569 ret
= read_cis_cache(s
, attr
, ofs
+2, 4,
574 case CISTPL_LONGLINK_C
:
575 HAS_LINK(tuple
->Flags
) = 1;
576 LINK_SPACE(tuple
->Flags
) = attr
& ~IS_ATTR
;
577 ret
= read_cis_cache(s
, attr
, ofs
+2, 4,
582 case CISTPL_INDIRECT
:
583 HAS_LINK(tuple
->Flags
) = 1;
584 LINK_SPACE(tuple
->Flags
) = IS_ATTR
|
586 tuple
->LinkOffset
= 0;
588 case CISTPL_LONGLINK_MFC
:
589 tuple
->LinkOffset
= ofs
+ 3;
590 LINK_SPACE(tuple
->Flags
) = attr
;
591 if (function
== BIND_FN_ALL
) {
592 /* Follow all the MFC links */
593 ret
= read_cis_cache(s
, attr
, ofs
+2,
597 MFC_FN(tuple
->Flags
) = tmp
;
599 /* Follow exactly one of the links */
600 MFC_FN(tuple
->Flags
) = 1;
601 tuple
->LinkOffset
+= function
* 5;
605 HAS_LINK(tuple
->Flags
) = 0;
608 if ((tuple
->Attributes
& TUPLE_RETURN_LINK
) &&
609 (tuple
->DesiredTuple
== RETURN_FIRST_TUPLE
))
612 if (tuple
->DesiredTuple
== RETURN_FIRST_TUPLE
)
615 if (link
[0] == tuple
->DesiredTuple
)
619 if (i
== MAX_TUPLES
) {
620 dev_dbg(&s
->dev
, "cs: overrun in pcmcia_get_next_tuple\n");
624 tuple
->TupleCode
= link
[0];
625 tuple
->TupleLink
= link
[1];
626 tuple
->CISOffset
= ofs
+ 2;
630 int pccard_get_tuple_data(struct pcmcia_socket
*s
, tuple_t
*tuple
)
638 if (tuple
->TupleLink
< tuple
->TupleOffset
)
640 len
= tuple
->TupleLink
- tuple
->TupleOffset
;
641 tuple
->TupleDataLen
= tuple
->TupleLink
;
644 ret
= read_cis_cache(s
, SPACE(tuple
->Flags
),
645 tuple
->CISOffset
+ tuple
->TupleOffset
,
646 min(len
, (u_int
) tuple
->TupleDataMax
),
654 /* Parsing routines for individual tuples */
656 static int parse_device(tuple_t
*tuple
, cistpl_device_t
*device
)
662 p
= (u_char
*)tuple
->TupleData
;
663 q
= p
+ tuple
->TupleDataLen
;
666 for (i
= 0; i
< CISTPL_MAX_DEVICES
; i
++) {
670 device
->dev
[i
].type
= (*p
>> 4);
671 device
->dev
[i
].wp
= (*p
& 0x08) ? 1 : 0;
674 device
->dev
[i
].speed
= 0;
677 device
->dev
[i
].speed
= 250;
680 device
->dev
[i
].speed
= 200;
683 device
->dev
[i
].speed
= 150;
686 device
->dev
[i
].speed
= 100;
691 device
->dev
[i
].speed
= SPEED_CVT(*p
);
707 device
->dev
[i
].size
= ((*p
>> 3) + 1) * (512 << (scale
*2));
717 static int parse_checksum(tuple_t
*tuple
, cistpl_checksum_t
*csum
)
720 if (tuple
->TupleDataLen
< 5)
722 p
= (u_char
*) tuple
->TupleData
;
723 csum
->addr
= tuple
->CISOffset
+ get_unaligned_le16(p
) - 2;
724 csum
->len
= get_unaligned_le16(p
+ 2);
725 csum
->sum
= *(p
+ 4);
730 static int parse_longlink(tuple_t
*tuple
, cistpl_longlink_t
*link
)
732 if (tuple
->TupleDataLen
< 4)
734 link
->addr
= get_unaligned_le32(tuple
->TupleData
);
739 static int parse_longlink_mfc(tuple_t
*tuple
, cistpl_longlink_mfc_t
*link
)
744 p
= (u_char
*)tuple
->TupleData
;
747 if (tuple
->TupleDataLen
<= link
->nfn
*5)
749 for (i
= 0; i
< link
->nfn
; i
++) {
750 link
->fn
[i
].space
= *p
; p
++;
751 link
->fn
[i
].addr
= get_unaligned_le32(p
);
758 static int parse_strings(u_char
*p
, u_char
*q
, int max
,
759 char *s
, u_char
*ofs
, u_char
*found
)
766 for (i
= 0; i
< max
; i
++) {
772 s
[j
++] = (*p
== 0xff) ? '\0' : *p
;
773 if ((*p
== '\0') || (*p
== 0xff))
778 if ((*p
== 0xff) || (++p
== q
))
786 return (ns
== max
) ? 0 : -EINVAL
;
790 static int parse_vers_1(tuple_t
*tuple
, cistpl_vers_1_t
*vers_1
)
794 p
= (u_char
*)tuple
->TupleData
;
795 q
= p
+ tuple
->TupleDataLen
;
797 vers_1
->major
= *p
; p
++;
798 vers_1
->minor
= *p
; p
++;
802 return parse_strings(p
, q
, CISTPL_VERS_1_MAX_PROD_STRINGS
,
803 vers_1
->str
, vers_1
->ofs
, &vers_1
->ns
);
807 static int parse_altstr(tuple_t
*tuple
, cistpl_altstr_t
*altstr
)
811 p
= (u_char
*)tuple
->TupleData
;
812 q
= p
+ tuple
->TupleDataLen
;
814 return parse_strings(p
, q
, CISTPL_MAX_ALTSTR_STRINGS
,
815 altstr
->str
, altstr
->ofs
, &altstr
->ns
);
819 static int parse_jedec(tuple_t
*tuple
, cistpl_jedec_t
*jedec
)
824 p
= (u_char
*)tuple
->TupleData
;
825 q
= p
+ tuple
->TupleDataLen
;
827 for (nid
= 0; nid
< CISTPL_MAX_DEVICES
; nid
++) {
830 jedec
->id
[nid
].mfr
= p
[0];
831 jedec
->id
[nid
].info
= p
[1];
839 static int parse_manfid(tuple_t
*tuple
, cistpl_manfid_t
*m
)
841 if (tuple
->TupleDataLen
< 4)
843 m
->manf
= get_unaligned_le16(tuple
->TupleData
);
844 m
->card
= get_unaligned_le16(tuple
->TupleData
+ 2);
849 static int parse_funcid(tuple_t
*tuple
, cistpl_funcid_t
*f
)
852 if (tuple
->TupleDataLen
< 2)
854 p
= (u_char
*)tuple
->TupleData
;
861 static int parse_funce(tuple_t
*tuple
, cistpl_funce_t
*f
)
865 if (tuple
->TupleDataLen
< 1)
867 p
= (u_char
*)tuple
->TupleData
;
869 for (i
= 1; i
< tuple
->TupleDataLen
; i
++)
875 static int parse_config(tuple_t
*tuple
, cistpl_config_t
*config
)
880 p
= (u_char
*)tuple
->TupleData
;
882 rmsz
= (*p
& 0x3c) >> 2;
883 if (tuple
->TupleDataLen
< rasz
+rmsz
+4)
885 config
->last_idx
= *(++p
);
888 for (i
= 0; i
<= rasz
; i
++)
889 config
->base
+= p
[i
] << (8*i
);
891 for (i
= 0; i
< 4; i
++)
892 config
->rmask
[i
] = 0;
893 for (i
= 0; i
<= rmsz
; i
++)
894 config
->rmask
[i
>>2] += p
[i
] << (8*(i
%4));
895 config
->subtuples
= tuple
->TupleDataLen
- (rasz
+rmsz
+4);
899 /* The following routines are all used to parse the nightmarish
900 * config table entries.
903 static u_char
*parse_power(u_char
*p
, u_char
*q
, cistpl_power_t
*pwr
)
913 for (i
= 0; i
< 7; i
++)
914 if (pwr
->present
& (1<<i
)) {
917 pwr
->param
[i
] = POWER_CVT(*p
);
918 scale
= POWER_SCALE(*p
);
922 if ((*p
& 0x7f) < 100)
924 (*p
& 0x7f) * scale
/ 100;
926 pwr
->flags
|= CISTPL_POWER_HIGHZ_OK
;
930 pwr
->flags
|= CISTPL_POWER_HIGHZ_REQ
;
940 static u_char
*parse_timing(u_char
*p
, u_char
*q
, cistpl_timing_t
*timing
)
947 if ((scale
& 3) != 3) {
950 timing
->wait
= SPEED_CVT(*p
);
951 timing
->waitscale
= exponent
[scale
& 3];
955 if ((scale
& 7) != 7) {
958 timing
->ready
= SPEED_CVT(*p
);
959 timing
->rdyscale
= exponent
[scale
& 7];
966 timing
->reserved
= SPEED_CVT(*p
);
967 timing
->rsvscale
= exponent
[scale
];
969 timing
->reserved
= 0;
975 static u_char
*parse_io(u_char
*p
, u_char
*q
, cistpl_io_t
*io
)
986 io
->win
[0].len
= (1 << (io
->flags
& CISTPL_IO_LINES_MASK
));
992 io
->nwin
= (*p
& 0x0f) + 1;
993 bsz
= (*p
& 0x30) >> 4;
996 lsz
= (*p
& 0xc0) >> 6;
1001 for (i
= 0; i
< io
->nwin
; i
++) {
1002 io
->win
[i
].base
= 0;
1004 for (j
= 0; j
< bsz
; j
++, p
++) {
1007 io
->win
[i
].base
+= *p
<< (j
*8);
1009 for (j
= 0; j
< lsz
; j
++, p
++) {
1012 io
->win
[i
].len
+= *p
<< (j
*8);
1019 static u_char
*parse_mem(u_char
*p
, u_char
*q
, cistpl_mem_t
*mem
)
1021 int i
, j
, asz
, lsz
, has_ha
;
1027 mem
->nwin
= (*p
& 0x07) + 1;
1028 lsz
= (*p
& 0x18) >> 3;
1029 asz
= (*p
& 0x60) >> 5;
1030 has_ha
= (*p
& 0x80);
1034 for (i
= 0; i
< mem
->nwin
; i
++) {
1036 for (j
= 0; j
< lsz
; j
++, p
++) {
1041 for (j
= 0; j
< asz
; j
++, p
++) {
1047 for (j
= 0; j
< asz
; j
++, p
++) {
1052 mem
->win
[i
].len
= len
<< 8;
1053 mem
->win
[i
].card_addr
= ca
<< 8;
1054 mem
->win
[i
].host_addr
= ha
<< 8;
1060 static u_char
*parse_irq(u_char
*p
, u_char
*q
, cistpl_irq_t
*irq
)
1064 irq
->IRQInfo1
= *p
; p
++;
1065 if (irq
->IRQInfo1
& IRQ_INFO2_VALID
) {
1068 irq
->IRQInfo2
= (p
[1]<<8) + p
[0];
1075 static int parse_cftable_entry(tuple_t
*tuple
,
1076 cistpl_cftable_entry_t
*entry
)
1078 u_char
*p
, *q
, features
;
1080 p
= tuple
->TupleData
;
1081 q
= p
+ tuple
->TupleDataLen
;
1082 entry
->index
= *p
& 0x3f;
1085 entry
->flags
|= CISTPL_CFTABLE_DEFAULT
;
1090 entry
->flags
|= CISTPL_CFTABLE_BVDS
;
1092 entry
->flags
|= CISTPL_CFTABLE_WP
;
1094 entry
->flags
|= CISTPL_CFTABLE_RDYBSY
;
1096 entry
->flags
|= CISTPL_CFTABLE_MWAIT
;
1097 entry
->interface
= *p
& 0x0f;
1099 entry
->interface
= 0;
1101 /* Process optional features */
1107 if ((features
& 3) > 0) {
1108 p
= parse_power(p
, q
, &entry
->vcc
);
1112 entry
->vcc
.present
= 0;
1113 if ((features
& 3) > 1) {
1114 p
= parse_power(p
, q
, &entry
->vpp1
);
1118 entry
->vpp1
.present
= 0;
1119 if ((features
& 3) > 2) {
1120 p
= parse_power(p
, q
, &entry
->vpp2
);
1124 entry
->vpp2
.present
= 0;
1126 /* Timing options */
1127 if (features
& 0x04) {
1128 p
= parse_timing(p
, q
, &entry
->timing
);
1132 entry
->timing
.wait
= 0;
1133 entry
->timing
.ready
= 0;
1134 entry
->timing
.reserved
= 0;
1137 /* I/O window options */
1138 if (features
& 0x08) {
1139 p
= parse_io(p
, q
, &entry
->io
);
1145 /* Interrupt options */
1146 if (features
& 0x10) {
1147 p
= parse_irq(p
, q
, &entry
->irq
);
1151 entry
->irq
.IRQInfo1
= 0;
1153 switch (features
& 0x60) {
1155 entry
->mem
.nwin
= 0;
1158 entry
->mem
.nwin
= 1;
1159 entry
->mem
.win
[0].len
= get_unaligned_le16(p
) << 8;
1160 entry
->mem
.win
[0].card_addr
= 0;
1161 entry
->mem
.win
[0].host_addr
= 0;
1167 entry
->mem
.nwin
= 1;
1168 entry
->mem
.win
[0].len
= get_unaligned_le16(p
) << 8;
1169 entry
->mem
.win
[0].card_addr
= get_unaligned_le16(p
+ 2) << 8;
1170 entry
->mem
.win
[0].host_addr
= 0;
1176 p
= parse_mem(p
, q
, &entry
->mem
);
1183 if (features
& 0x80) {
1186 entry
->flags
|= (*p
<< 8);
1193 entry
->subtuples
= q
-p
;
1199 static int parse_device_geo(tuple_t
*tuple
, cistpl_device_geo_t
*geo
)
1204 p
= (u_char
*)tuple
->TupleData
;
1205 q
= p
+ tuple
->TupleDataLen
;
1207 for (n
= 0; n
< CISTPL_MAX_DEVICES
; n
++) {
1210 geo
->geo
[n
].buswidth
= p
[0];
1211 geo
->geo
[n
].erase_block
= 1 << (p
[1]-1);
1212 geo
->geo
[n
].read_block
= 1 << (p
[2]-1);
1213 geo
->geo
[n
].write_block
= 1 << (p
[3]-1);
1214 geo
->geo
[n
].partition
= 1 << (p
[4]-1);
1215 geo
->geo
[n
].interleave
= 1 << (p
[5]-1);
1223 static int parse_vers_2(tuple_t
*tuple
, cistpl_vers_2_t
*v2
)
1227 if (tuple
->TupleDataLen
< 10)
1230 p
= tuple
->TupleData
;
1231 q
= p
+ tuple
->TupleDataLen
;
1235 v2
->dindex
= get_unaligned_le16(p
+ 2);
1240 return parse_strings(p
, q
, 2, v2
->str
, &v2
->vendor
, NULL
);
1244 static int parse_org(tuple_t
*tuple
, cistpl_org_t
*org
)
1249 p
= tuple
->TupleData
;
1250 q
= p
+ tuple
->TupleDataLen
;
1256 for (i
= 0; i
< 30; i
++) {
1267 static int parse_format(tuple_t
*tuple
, cistpl_format_t
*fmt
)
1271 if (tuple
->TupleDataLen
< 10)
1274 p
= tuple
->TupleData
;
1278 fmt
->offset
= get_unaligned_le32(p
+ 2);
1279 fmt
->length
= get_unaligned_le32(p
+ 6);
1285 int pcmcia_parse_tuple(tuple_t
*tuple
, cisparse_t
*parse
)
1289 if (tuple
->TupleDataLen
> tuple
->TupleDataMax
)
1291 switch (tuple
->TupleCode
) {
1293 case CISTPL_DEVICE_A
:
1294 ret
= parse_device(tuple
, &parse
->device
);
1296 case CISTPL_CHECKSUM
:
1297 ret
= parse_checksum(tuple
, &parse
->checksum
);
1299 case CISTPL_LONGLINK_A
:
1300 case CISTPL_LONGLINK_C
:
1301 ret
= parse_longlink(tuple
, &parse
->longlink
);
1303 case CISTPL_LONGLINK_MFC
:
1304 ret
= parse_longlink_mfc(tuple
, &parse
->longlink_mfc
);
1307 ret
= parse_vers_1(tuple
, &parse
->version_1
);
1310 ret
= parse_altstr(tuple
, &parse
->altstr
);
1312 case CISTPL_JEDEC_A
:
1313 case CISTPL_JEDEC_C
:
1314 ret
= parse_jedec(tuple
, &parse
->jedec
);
1317 ret
= parse_manfid(tuple
, &parse
->manfid
);
1320 ret
= parse_funcid(tuple
, &parse
->funcid
);
1323 ret
= parse_funce(tuple
, &parse
->funce
);
1326 ret
= parse_config(tuple
, &parse
->config
);
1328 case CISTPL_CFTABLE_ENTRY
:
1329 ret
= parse_cftable_entry(tuple
, &parse
->cftable_entry
);
1331 case CISTPL_DEVICE_GEO
:
1332 case CISTPL_DEVICE_GEO_A
:
1333 ret
= parse_device_geo(tuple
, &parse
->device_geo
);
1336 ret
= parse_vers_2(tuple
, &parse
->vers_2
);
1339 ret
= parse_org(tuple
, &parse
->org
);
1342 case CISTPL_FORMAT_A
:
1343 ret
= parse_format(tuple
, &parse
->format
);
1345 case CISTPL_NO_LINK
:
1346 case CISTPL_LINKTARGET
:
1354 pr_debug("parse_tuple failed %d\n", ret
);
1357 EXPORT_SYMBOL(pcmcia_parse_tuple
);
1361 * pccard_validate_cis() - check whether card has a sensible CIS
1362 * @s: the struct pcmcia_socket we are to check
1363 * @info: returns the number of tuples in the (valid) CIS, or 0
1365 * This tries to determine if a card has a sensible CIS. In @info, it
1366 * returns the number of tuples in the CIS, or 0 if the CIS looks bad. The
1367 * checks include making sure several critical tuples are present and
1368 * valid; seeing if the total number of tuples is reasonable; and
1369 * looking for tuples that use reserved codes.
1371 * The function returns 0 on success.
1373 int pccard_validate_cis(struct pcmcia_socket
*s
, unsigned int *info
)
1377 unsigned int count
= 0;
1378 int ret
, reserved
, dev_ok
= 0, ident_ok
= 0;
1388 /* We do not want to validate the CIS cache... */
1389 mutex_lock(&s
->ops_mutex
);
1390 destroy_cis_cache(s
);
1391 mutex_unlock(&s
->ops_mutex
);
1393 tuple
= kmalloc(sizeof(*tuple
), GFP_KERNEL
);
1394 if (tuple
== NULL
) {
1395 dev_warn(&s
->dev
, "no memory to validate CIS\n");
1398 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
1401 dev_warn(&s
->dev
, "no memory to validate CIS\n");
1405 count
= reserved
= 0;
1406 tuple
->DesiredTuple
= RETURN_FIRST_TUPLE
;
1407 tuple
->Attributes
= TUPLE_RETURN_COMMON
;
1408 ret
= pccard_get_first_tuple(s
, BIND_FN_ALL
, tuple
);
1412 /* First tuple should be DEVICE; we should really have either that
1413 or a CFTABLE_ENTRY of some sort */
1414 if ((tuple
->TupleCode
== CISTPL_DEVICE
) ||
1415 (!pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_CFTABLE_ENTRY
, p
)) ||
1416 (!pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_CFTABLE_ENTRY_CB
, p
)))
1419 /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
1420 tuple, for card identification. Certain old D-Link and Linksys
1421 cards have only a broken VERS_2 tuple; hence the bogus test. */
1422 if ((pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_MANFID
, p
) == 0) ||
1423 (pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_VERS_1
, p
) == 0) ||
1424 (pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_VERS_2
, p
) != -ENOSPC
))
1427 if (!dev_ok
&& !ident_ok
)
1430 for (count
= 1; count
< MAX_TUPLES
; count
++) {
1431 ret
= pccard_get_next_tuple(s
, BIND_FN_ALL
, tuple
);
1434 if (((tuple
->TupleCode
> 0x23) && (tuple
->TupleCode
< 0x40)) ||
1435 ((tuple
->TupleCode
> 0x47) && (tuple
->TupleCode
< 0x80)) ||
1436 ((tuple
->TupleCode
> 0x90) && (tuple
->TupleCode
< 0xff)))
1439 if ((count
== MAX_TUPLES
) || (reserved
> 5) ||
1440 ((!dev_ok
|| !ident_ok
) && (count
> 10)))
1446 /* invalidate CIS cache on failure */
1447 if (!dev_ok
|| !ident_ok
|| !count
) {
1448 mutex_lock(&s
->ops_mutex
);
1449 destroy_cis_cache(s
);
1450 mutex_unlock(&s
->ops_mutex
);
1462 #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)
1464 static ssize_t
pccard_extract_cis(struct pcmcia_socket
*s
, char *buf
,
1465 loff_t off
, size_t count
)
1471 u_char
*tuplebuffer
;
1474 tuplebuffer
= kmalloc(sizeof(u_char
) * 256, GFP_KERNEL
);
1478 tempbuffer
= kmalloc(sizeof(u_char
) * 258, GFP_KERNEL
);
1484 memset(&tuple
, 0, sizeof(tuple_t
));
1486 tuple
.Attributes
= TUPLE_RETURN_LINK
| TUPLE_RETURN_COMMON
;
1487 tuple
.DesiredTuple
= RETURN_FIRST_TUPLE
;
1488 tuple
.TupleOffset
= 0;
1490 status
= pccard_get_first_tuple(s
, BIND_FN_ALL
, &tuple
);
1492 tuple
.TupleData
= tuplebuffer
;
1493 tuple
.TupleDataMax
= 255;
1494 memset(tuplebuffer
, 0, sizeof(u_char
) * 255);
1496 status
= pccard_get_tuple_data(s
, &tuple
);
1500 if (off
< (pointer
+ 2 + tuple
.TupleDataLen
)) {
1501 tempbuffer
[0] = tuple
.TupleCode
& 0xff;
1502 tempbuffer
[1] = tuple
.TupleLink
& 0xff;
1503 for (i
= 0; i
< tuple
.TupleDataLen
; i
++)
1504 tempbuffer
[i
+ 2] = tuplebuffer
[i
] & 0xff;
1506 for (i
= 0; i
< (2 + tuple
.TupleDataLen
); i
++) {
1507 if (((i
+ pointer
) >= off
) &&
1508 (i
+ pointer
) < (off
+ count
)) {
1509 buf
[ret
] = tempbuffer
[i
];
1515 pointer
+= 2 + tuple
.TupleDataLen
;
1517 if (pointer
>= (off
+ count
))
1520 if (tuple
.TupleCode
== CISTPL_END
)
1522 status
= pccard_get_next_tuple(s
, BIND_FN_ALL
, &tuple
);
1533 static ssize_t
pccard_show_cis(struct file
*filp
, struct kobject
*kobj
,
1534 struct bin_attribute
*bin_attr
,
1535 char *buf
, loff_t off
, size_t count
)
1537 unsigned int size
= 0x200;
1542 struct pcmcia_socket
*s
;
1543 unsigned int chains
= 1;
1545 if (off
+ count
> size
)
1548 s
= to_socket(container_of(kobj
, struct device
, kobj
));
1550 if (!(s
->state
& SOCKET_PRESENT
))
1552 if (!s
->functions
&& pccard_validate_cis(s
, &chains
))
1557 count
= pccard_extract_cis(s
, buf
, off
, count
);
1564 static ssize_t
pccard_store_cis(struct file
*filp
, struct kobject
*kobj
,
1565 struct bin_attribute
*bin_attr
,
1566 char *buf
, loff_t off
, size_t count
)
1568 struct pcmcia_socket
*s
;
1571 s
= to_socket(container_of(kobj
, struct device
, kobj
));
1576 if (count
>= CISTPL_MAX_CIS_SIZE
)
1579 if (!(s
->state
& SOCKET_PRESENT
))
1582 error
= pcmcia_replace_cis(s
, buf
, count
);
1586 pcmcia_parse_uevents(s
, PCMCIA_UEVENT_REQUERY
);
1592 struct bin_attribute pccard_cis_attr
= {
1593 .attr
= { .name
= "cis", .mode
= S_IRUGO
| S_IWUSR
},
1595 .read
= pccard_show_cis
,
1596 .write
= pccard_store_cis
,