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/cs_types.h>
31 #include <pcmcia/ss.h>
32 #include <pcmcia/cs.h>
33 #include <pcmcia/cisreg.h>
34 #include <pcmcia/cistpl.h>
35 #include "cs_internal.h"
37 static const u_char mantissa
[] = {
38 10, 12, 13, 15, 20, 25, 30, 35,
39 40, 45, 50, 55, 60, 70, 80, 90
42 static const u_int exponent
[] = {
43 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
46 /* Convert an extended speed byte to a time in nanoseconds */
47 #define SPEED_CVT(v) \
48 (mantissa[(((v)>>3)&15)-1] * exponent[(v)&7] / 10)
49 /* Convert a power byte to a current in 0.1 microamps */
50 #define POWER_CVT(v) \
51 (mantissa[((v)>>3)&15] * exponent[(v)&7] / 10)
52 #define POWER_SCALE(v) (exponent[(v)&7])
54 /* Upper limit on reasonable # of tuples */
55 #define MAX_TUPLES 200
57 /*====================================================================*/
59 /* Parameters that can be set with 'insmod' */
63 module_param(cis_width
, int, 0444);
65 void release_cis_mem(struct pcmcia_socket
*s
)
67 if (s
->cis_mem
.flags
& MAP_ACTIVE
) {
68 s
->cis_mem
.flags
&= ~MAP_ACTIVE
;
69 s
->ops
->set_mem_map(s
, &s
->cis_mem
);
71 release_resource(s
->cis_mem
.res
);
72 kfree(s
->cis_mem
.res
);
73 s
->cis_mem
.res
= NULL
;
79 EXPORT_SYMBOL(release_cis_mem
);
82 * Map the card memory at "card_offset" into virtual space.
83 * If flags & MAP_ATTRIB, map the attribute space, otherwise
84 * map the memory space.
87 set_cis_map(struct pcmcia_socket
*s
, unsigned int card_offset
, unsigned int flags
)
89 pccard_mem_map
*mem
= &s
->cis_mem
;
92 if (!(s
->features
& SS_CAP_STATIC_MAP
) && (mem
->res
== NULL
)) {
93 mem
->res
= pcmcia_find_mem_region(0, s
->map_size
, s
->map_size
, 0, s
);
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
);
124 /*======================================================================
126 Low-level functions to read and write CIS memory. I think the
127 write routine is only useful for writing one-byte registers.
129 ======================================================================*/
131 /* Bits in attr field */
133 #define IS_INDIRECT 8
135 int pcmcia_read_cis_mem(struct pcmcia_socket
*s
, int attr
, u_int addr
,
136 u_int len
, void *ptr
)
138 void __iomem
*sys
, *end
;
139 unsigned char *buf
= ptr
;
141 cs_dbg(s
, 3, "pcmcia_read_cis_mem(%d, %#x, %u)\n", attr
, addr
, len
);
143 if (attr
& IS_INDIRECT
) {
144 /* Indirect accesses use a bunch of special registers at fixed
145 locations in common memory */
146 u_char flags
= ICTRL0_COMMON
|ICTRL0_AUTOINC
|ICTRL0_BYTEGRAN
;
147 if (attr
& IS_ATTR
) {
149 flags
= ICTRL0_AUTOINC
;
152 sys
= set_cis_map(s
, 0, MAP_ACTIVE
| ((cis_width
) ? MAP_16BIT
: 0));
154 memset(ptr
, 0xff, len
);
158 writeb(flags
, sys
+CISREG_ICTRL0
);
159 writeb(addr
& 0xff, sys
+CISREG_IADDR0
);
160 writeb((addr
>>8) & 0xff, sys
+CISREG_IADDR1
);
161 writeb((addr
>>16) & 0xff, sys
+CISREG_IADDR2
);
162 writeb((addr
>>24) & 0xff, sys
+CISREG_IADDR3
);
163 for ( ; len
> 0; len
--, buf
++)
164 *buf
= readb(sys
+CISREG_IDATA0
);
166 u_int inc
= 1, card_offset
, flags
;
168 flags
= MAP_ACTIVE
| ((cis_width
) ? MAP_16BIT
: 0);
175 card_offset
= addr
& ~(s
->map_size
-1);
177 sys
= set_cis_map(s
, card_offset
, flags
);
179 memset(ptr
, 0xff, len
);
182 end
= sys
+ s
->map_size
;
183 sys
= sys
+ (addr
& (s
->map_size
-1));
184 for ( ; len
> 0; len
--, buf
++, sys
+= inc
) {
189 card_offset
+= s
->map_size
;
193 cs_dbg(s
, 3, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n",
194 *(u_char
*)(ptr
+0), *(u_char
*)(ptr
+1),
195 *(u_char
*)(ptr
+2), *(u_char
*)(ptr
+3));
198 EXPORT_SYMBOL(pcmcia_read_cis_mem
);
201 void pcmcia_write_cis_mem(struct pcmcia_socket
*s
, int attr
, u_int addr
,
202 u_int len
, void *ptr
)
204 void __iomem
*sys
, *end
;
205 unsigned char *buf
= ptr
;
207 cs_dbg(s
, 3, "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr
, addr
, len
);
209 if (attr
& IS_INDIRECT
) {
210 /* Indirect accesses use a bunch of special registers at fixed
211 locations in common memory */
212 u_char flags
= ICTRL0_COMMON
|ICTRL0_AUTOINC
|ICTRL0_BYTEGRAN
;
213 if (attr
& IS_ATTR
) {
215 flags
= ICTRL0_AUTOINC
;
218 sys
= set_cis_map(s
, 0, MAP_ACTIVE
| ((cis_width
) ? MAP_16BIT
: 0));
220 return; /* FIXME: Error */
222 writeb(flags
, sys
+CISREG_ICTRL0
);
223 writeb(addr
& 0xff, sys
+CISREG_IADDR0
);
224 writeb((addr
>>8) & 0xff, sys
+CISREG_IADDR1
);
225 writeb((addr
>>16) & 0xff, sys
+CISREG_IADDR2
);
226 writeb((addr
>>24) & 0xff, sys
+CISREG_IADDR3
);
227 for ( ; len
> 0; len
--, buf
++)
228 writeb(*buf
, sys
+CISREG_IDATA0
);
230 u_int inc
= 1, card_offset
, flags
;
232 flags
= MAP_ACTIVE
| ((cis_width
) ? MAP_16BIT
: 0);
233 if (attr
& IS_ATTR
) {
239 card_offset
= addr
& ~(s
->map_size
-1);
241 sys
= set_cis_map(s
, card_offset
, flags
);
243 return; /* FIXME: error */
245 end
= sys
+ s
->map_size
;
246 sys
= sys
+ (addr
& (s
->map_size
-1));
247 for ( ; len
> 0; len
--, buf
++, sys
+= inc
) {
252 card_offset
+= s
->map_size
;
257 EXPORT_SYMBOL(pcmcia_write_cis_mem
);
260 /*======================================================================
262 This is a wrapper around read_cis_mem, with the same interface,
263 but which caches information, for cards whose CIS may not be
264 readable all the time.
266 ======================================================================*/
268 static void read_cis_cache(struct pcmcia_socket
*s
, int attr
, u_int addr
,
269 size_t len
, void *ptr
)
271 struct cis_cache_entry
*cis
;
275 if (s
->fake_cis_len
>= addr
+len
)
276 memcpy(ptr
, s
->fake_cis
+addr
, len
);
278 memset(ptr
, 0xff, len
);
282 list_for_each_entry(cis
, &s
->cis_cache
, node
) {
283 if (cis
->addr
== addr
&& cis
->len
== len
&& cis
->attr
== attr
) {
284 memcpy(ptr
, cis
->cache
, len
);
289 #ifdef CONFIG_CARDBUS
290 if (s
->state
& SOCKET_CARDBUS
)
291 ret
= read_cb_mem(s
, attr
, addr
, len
, ptr
);
294 ret
= pcmcia_read_cis_mem(s
, attr
, addr
, len
, ptr
);
297 /* Copy data into the cache */
298 cis
= kmalloc(sizeof(struct cis_cache_entry
) + len
, GFP_KERNEL
);
303 memcpy(cis
->cache
, ptr
, len
);
304 list_add(&cis
->node
, &s
->cis_cache
);
310 remove_cis_cache(struct pcmcia_socket
*s
, int attr
, u_int addr
, u_int len
)
312 struct cis_cache_entry
*cis
;
314 list_for_each_entry(cis
, &s
->cis_cache
, node
)
315 if (cis
->addr
== addr
&& cis
->len
== len
&& cis
->attr
== attr
) {
316 list_del(&cis
->node
);
322 void destroy_cis_cache(struct pcmcia_socket
*s
)
324 struct list_head
*l
, *n
;
326 list_for_each_safe(l
, n
, &s
->cis_cache
) {
327 struct cis_cache_entry
*cis
= list_entry(l
, struct cis_cache_entry
, node
);
329 list_del(&cis
->node
);
334 * If there was a fake CIS, destroy that as well.
339 EXPORT_SYMBOL(destroy_cis_cache
);
341 /*======================================================================
343 This verifies if the CIS of a card matches what is in the CIS
346 ======================================================================*/
348 int verify_cis_cache(struct pcmcia_socket
*s
)
350 struct cis_cache_entry
*cis
;
353 buf
= kmalloc(256, GFP_KERNEL
);
355 dev_printk(KERN_WARNING
, &s
->dev
,
356 "no memory for verifying CIS\n");
359 list_for_each_entry(cis
, &s
->cis_cache
, node
) {
364 #ifdef CONFIG_CARDBUS
365 if (s
->state
& SOCKET_CARDBUS
)
366 read_cb_mem(s
, cis
->attr
, cis
->addr
, len
, buf
);
369 pcmcia_read_cis_mem(s
, cis
->attr
, cis
->addr
, len
, buf
);
371 if (memcmp(buf
, cis
->cache
, len
) != 0) {
380 /*======================================================================
382 For really bad cards, we provide a facility for uploading a
385 ======================================================================*/
387 int pcmcia_replace_cis(struct pcmcia_socket
*s
,
388 const u8
*data
, const size_t len
)
390 if (len
> CISTPL_MAX_CIS_SIZE
) {
391 dev_printk(KERN_WARNING
, &s
->dev
, "replacement CIS too big\n");
395 s
->fake_cis
= kmalloc(len
, GFP_KERNEL
);
396 if (s
->fake_cis
== NULL
) {
397 dev_printk(KERN_WARNING
, &s
->dev
, "no memory to replace CIS\n");
400 s
->fake_cis_len
= len
;
401 memcpy(s
->fake_cis
, data
, len
);
404 EXPORT_SYMBOL(pcmcia_replace_cis
);
406 /*======================================================================
408 The high-level CIS tuple services
410 ======================================================================*/
412 typedef struct tuple_flags
{
419 #define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space)
420 #define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link)
421 #define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn)
422 #define SPACE(f) (((tuple_flags *)(&(f)))->space)
424 int pccard_get_next_tuple(struct pcmcia_socket
*s
, unsigned int func
, tuple_t
*tuple
);
426 int pccard_get_first_tuple(struct pcmcia_socket
*s
, unsigned int function
, tuple_t
*tuple
)
430 if (!(s
->state
& SOCKET_PRESENT
))
432 tuple
->TupleLink
= tuple
->Flags
= 0;
433 #ifdef CONFIG_CARDBUS
434 if (s
->state
& SOCKET_CARDBUS
) {
435 struct pci_dev
*dev
= s
->cb_dev
;
437 pci_bus_read_config_dword(dev
->subordinate
, 0, PCI_CARDBUS_CIS
, &ptr
);
438 tuple
->CISOffset
= ptr
& ~7;
439 SPACE(tuple
->Flags
) = (ptr
& 7);
443 /* Assume presence of a LONGLINK_C to address 0 */
444 tuple
->CISOffset
= tuple
->LinkOffset
= 0;
445 SPACE(tuple
->Flags
) = HAS_LINK(tuple
->Flags
) = 1;
447 if (!(s
->state
& SOCKET_CARDBUS
) && (s
->functions
> 1) &&
448 !(tuple
->Attributes
& TUPLE_RETURN_COMMON
)) {
449 cisdata_t req
= tuple
->DesiredTuple
;
450 tuple
->DesiredTuple
= CISTPL_LONGLINK_MFC
;
451 if (pccard_get_next_tuple(s
, function
, tuple
) == 0) {
452 tuple
->DesiredTuple
= CISTPL_LINKTARGET
;
453 if (pccard_get_next_tuple(s
, function
, tuple
) != 0)
456 tuple
->CISOffset
= tuple
->TupleLink
= 0;
457 tuple
->DesiredTuple
= req
;
459 return pccard_get_next_tuple(s
, function
, tuple
);
461 EXPORT_SYMBOL(pccard_get_first_tuple
);
463 static int follow_link(struct pcmcia_socket
*s
, tuple_t
*tuple
)
468 if (MFC_FN(tuple
->Flags
)) {
469 /* Get indirect link from the MFC tuple */
470 read_cis_cache(s
, LINK_SPACE(tuple
->Flags
),
471 tuple
->LinkOffset
, 5, link
);
472 ofs
= get_unaligned_le32(link
+ 1);
473 SPACE(tuple
->Flags
) = (link
[0] == CISTPL_MFC_ATTR
);
474 /* Move to the next indirect link */
475 tuple
->LinkOffset
+= 5;
476 MFC_FN(tuple
->Flags
)--;
477 } else if (HAS_LINK(tuple
->Flags
)) {
478 ofs
= tuple
->LinkOffset
;
479 SPACE(tuple
->Flags
) = LINK_SPACE(tuple
->Flags
);
480 HAS_LINK(tuple
->Flags
) = 0;
484 if (!(s
->state
& SOCKET_CARDBUS
) && SPACE(tuple
->Flags
)) {
485 /* This is ugly, but a common CIS error is to code the long
486 link offset incorrectly, so we check the right spot... */
487 read_cis_cache(s
, SPACE(tuple
->Flags
), ofs
, 5, link
);
488 if ((link
[0] == CISTPL_LINKTARGET
) && (link
[1] >= 3) &&
489 (strncmp(link
+2, "CIS", 3) == 0))
491 remove_cis_cache(s
, SPACE(tuple
->Flags
), ofs
, 5);
492 /* Then, we try the wrong spot... */
495 read_cis_cache(s
, SPACE(tuple
->Flags
), ofs
, 5, link
);
496 if ((link
[0] == CISTPL_LINKTARGET
) && (link
[1] >= 3) &&
497 (strncmp(link
+2, "CIS", 3) == 0))
499 remove_cis_cache(s
, SPACE(tuple
->Flags
), ofs
, 5);
503 int pccard_get_next_tuple(struct pcmcia_socket
*s
, unsigned int function
, tuple_t
*tuple
)
510 if (!(s
->state
& SOCKET_PRESENT
))
513 link
[1] = tuple
->TupleLink
;
514 ofs
= tuple
->CISOffset
+ tuple
->TupleLink
;
515 attr
= SPACE(tuple
->Flags
);
517 for (i
= 0; i
< MAX_TUPLES
; i
++) {
518 if (link
[1] == 0xff) {
519 link
[0] = CISTPL_END
;
521 read_cis_cache(s
, attr
, ofs
, 2, link
);
522 if (link
[0] == CISTPL_NULL
) {
527 /* End of chain? Follow long link if possible */
528 if (link
[0] == CISTPL_END
) {
529 if ((ofs
= follow_link(s
, tuple
)) < 0)
531 attr
= SPACE(tuple
->Flags
);
532 read_cis_cache(s
, attr
, ofs
, 2, link
);
535 /* Is this a link tuple? Make a note of it */
536 if ((link
[0] == CISTPL_LONGLINK_A
) ||
537 (link
[0] == CISTPL_LONGLINK_C
) ||
538 (link
[0] == CISTPL_LONGLINK_MFC
) ||
539 (link
[0] == CISTPL_LINKTARGET
) ||
540 (link
[0] == CISTPL_INDIRECT
) ||
541 (link
[0] == CISTPL_NO_LINK
)) {
543 case CISTPL_LONGLINK_A
:
544 HAS_LINK(tuple
->Flags
) = 1;
545 LINK_SPACE(tuple
->Flags
) = attr
| IS_ATTR
;
546 read_cis_cache(s
, attr
, ofs
+2, 4, &tuple
->LinkOffset
);
548 case CISTPL_LONGLINK_C
:
549 HAS_LINK(tuple
->Flags
) = 1;
550 LINK_SPACE(tuple
->Flags
) = attr
& ~IS_ATTR
;
551 read_cis_cache(s
, attr
, ofs
+2, 4, &tuple
->LinkOffset
);
553 case CISTPL_INDIRECT
:
554 HAS_LINK(tuple
->Flags
) = 1;
555 LINK_SPACE(tuple
->Flags
) = IS_ATTR
| IS_INDIRECT
;
556 tuple
->LinkOffset
= 0;
558 case CISTPL_LONGLINK_MFC
:
559 tuple
->LinkOffset
= ofs
+ 3;
560 LINK_SPACE(tuple
->Flags
) = attr
;
561 if (function
== BIND_FN_ALL
) {
562 /* Follow all the MFC links */
563 read_cis_cache(s
, attr
, ofs
+2, 1, &tmp
);
564 MFC_FN(tuple
->Flags
) = tmp
;
566 /* Follow exactly one of the links */
567 MFC_FN(tuple
->Flags
) = 1;
568 tuple
->LinkOffset
+= function
* 5;
572 HAS_LINK(tuple
->Flags
) = 0;
575 if ((tuple
->Attributes
& TUPLE_RETURN_LINK
) &&
576 (tuple
->DesiredTuple
== RETURN_FIRST_TUPLE
))
579 if (tuple
->DesiredTuple
== RETURN_FIRST_TUPLE
)
582 if (link
[0] == tuple
->DesiredTuple
)
586 if (i
== MAX_TUPLES
) {
587 cs_dbg(s
, 1, "cs: overrun in pcmcia_get_next_tuple\n");
591 tuple
->TupleCode
= link
[0];
592 tuple
->TupleLink
= link
[1];
593 tuple
->CISOffset
= ofs
+ 2;
596 EXPORT_SYMBOL(pccard_get_next_tuple
);
598 /*====================================================================*/
600 #define _MIN(a, b) (((a) < (b)) ? (a) : (b))
602 int pccard_get_tuple_data(struct pcmcia_socket
*s
, tuple_t
*tuple
)
609 if (tuple
->TupleLink
< tuple
->TupleOffset
)
611 len
= tuple
->TupleLink
- tuple
->TupleOffset
;
612 tuple
->TupleDataLen
= tuple
->TupleLink
;
615 read_cis_cache(s
, SPACE(tuple
->Flags
),
616 tuple
->CISOffset
+ tuple
->TupleOffset
,
617 _MIN(len
, tuple
->TupleDataMax
), tuple
->TupleData
);
620 EXPORT_SYMBOL(pccard_get_tuple_data
);
623 /*======================================================================
625 Parsing routines for individual tuples
627 ======================================================================*/
629 static int parse_device(tuple_t
*tuple
, cistpl_device_t
*device
)
635 p
= (u_char
*)tuple
->TupleData
;
636 q
= p
+ tuple
->TupleDataLen
;
639 for (i
= 0; i
< CISTPL_MAX_DEVICES
; i
++) {
641 if (*p
== 0xff) break;
642 device
->dev
[i
].type
= (*p
>> 4);
643 device
->dev
[i
].wp
= (*p
& 0x08) ? 1 : 0;
645 case 0: device
->dev
[i
].speed
= 0; break;
646 case 1: device
->dev
[i
].speed
= 250; break;
647 case 2: device
->dev
[i
].speed
= 200; break;
648 case 3: device
->dev
[i
].speed
= 150; break;
649 case 4: device
->dev
[i
].speed
= 100; break;
653 device
->dev
[i
].speed
= SPEED_CVT(*p
);
669 device
->dev
[i
].size
= ((*p
>> 3) + 1) * (512 << (scale
*2));
678 /*====================================================================*/
680 static int parse_checksum(tuple_t
*tuple
, cistpl_checksum_t
*csum
)
683 if (tuple
->TupleDataLen
< 5)
685 p
= (u_char
*) tuple
->TupleData
;
686 csum
->addr
= tuple
->CISOffset
+ get_unaligned_le16(p
) - 2;
687 csum
->len
= get_unaligned_le16(p
+ 2);
688 csum
->sum
= *(p
+ 4);
692 /*====================================================================*/
694 static int parse_longlink(tuple_t
*tuple
, cistpl_longlink_t
*link
)
696 if (tuple
->TupleDataLen
< 4)
698 link
->addr
= get_unaligned_le32(tuple
->TupleData
);
702 /*====================================================================*/
704 static int parse_longlink_mfc(tuple_t
*tuple
,
705 cistpl_longlink_mfc_t
*link
)
710 p
= (u_char
*)tuple
->TupleData
;
713 if (tuple
->TupleDataLen
<= link
->nfn
*5)
715 for (i
= 0; i
< link
->nfn
; i
++) {
716 link
->fn
[i
].space
= *p
; p
++;
717 link
->fn
[i
].addr
= get_unaligned_le32(p
);
723 /*====================================================================*/
725 static int parse_strings(u_char
*p
, u_char
*q
, int max
,
726 char *s
, u_char
*ofs
, u_char
*found
)
733 for (i
= 0; i
< max
; i
++) {
739 s
[j
++] = (*p
== 0xff) ? '\0' : *p
;
740 if ((*p
== '\0') || (*p
== 0xff)) break;
744 if ((*p
== 0xff) || (++p
== q
)) break;
750 return (ns
== max
) ? 0 : -EINVAL
;
754 /*====================================================================*/
756 static int parse_vers_1(tuple_t
*tuple
, cistpl_vers_1_t
*vers_1
)
760 p
= (u_char
*)tuple
->TupleData
;
761 q
= p
+ tuple
->TupleDataLen
;
763 vers_1
->major
= *p
; p
++;
764 vers_1
->minor
= *p
; p
++;
768 return parse_strings(p
, q
, CISTPL_VERS_1_MAX_PROD_STRINGS
,
769 vers_1
->str
, vers_1
->ofs
, &vers_1
->ns
);
772 /*====================================================================*/
774 static int parse_altstr(tuple_t
*tuple
, cistpl_altstr_t
*altstr
)
778 p
= (u_char
*)tuple
->TupleData
;
779 q
= p
+ tuple
->TupleDataLen
;
781 return parse_strings(p
, q
, CISTPL_MAX_ALTSTR_STRINGS
,
782 altstr
->str
, altstr
->ofs
, &altstr
->ns
);
785 /*====================================================================*/
787 static int parse_jedec(tuple_t
*tuple
, cistpl_jedec_t
*jedec
)
792 p
= (u_char
*)tuple
->TupleData
;
793 q
= p
+ tuple
->TupleDataLen
;
795 for (nid
= 0; nid
< CISTPL_MAX_DEVICES
; nid
++) {
797 jedec
->id
[nid
].mfr
= p
[0];
798 jedec
->id
[nid
].info
= p
[1];
805 /*====================================================================*/
807 static int parse_manfid(tuple_t
*tuple
, cistpl_manfid_t
*m
)
809 if (tuple
->TupleDataLen
< 4)
811 m
->manf
= get_unaligned_le16(tuple
->TupleData
);
812 m
->card
= get_unaligned_le16(tuple
->TupleData
+ 2);
816 /*====================================================================*/
818 static int parse_funcid(tuple_t
*tuple
, cistpl_funcid_t
*f
)
821 if (tuple
->TupleDataLen
< 2)
823 p
= (u_char
*)tuple
->TupleData
;
829 /*====================================================================*/
831 static int parse_funce(tuple_t
*tuple
, cistpl_funce_t
*f
)
835 if (tuple
->TupleDataLen
< 1)
837 p
= (u_char
*)tuple
->TupleData
;
839 for (i
= 1; i
< tuple
->TupleDataLen
; i
++)
844 /*====================================================================*/
846 static int parse_config(tuple_t
*tuple
, cistpl_config_t
*config
)
851 p
= (u_char
*)tuple
->TupleData
;
853 rmsz
= (*p
& 0x3c) >> 2;
854 if (tuple
->TupleDataLen
< rasz
+rmsz
+4)
856 config
->last_idx
= *(++p
);
859 for (i
= 0; i
<= rasz
; i
++)
860 config
->base
+= p
[i
] << (8*i
);
862 for (i
= 0; i
< 4; i
++)
863 config
->rmask
[i
] = 0;
864 for (i
= 0; i
<= rmsz
; i
++)
865 config
->rmask
[i
>>2] += p
[i
] << (8*(i
%4));
866 config
->subtuples
= tuple
->TupleDataLen
- (rasz
+rmsz
+4);
870 /*======================================================================
872 The following routines are all used to parse the nightmarish
873 config table entries.
875 ======================================================================*/
877 static u_char
*parse_power(u_char
*p
, u_char
*q
,
883 if (p
== q
) return NULL
;
887 for (i
= 0; i
< 7; i
++)
888 if (pwr
->present
& (1<<i
)) {
889 if (p
== q
) return NULL
;
890 pwr
->param
[i
] = POWER_CVT(*p
);
891 scale
= POWER_SCALE(*p
);
893 if (++p
== q
) return NULL
;
894 if ((*p
& 0x7f) < 100)
895 pwr
->param
[i
] += (*p
& 0x7f) * scale
/ 100;
897 pwr
->flags
|= CISTPL_POWER_HIGHZ_OK
;
901 pwr
->flags
|= CISTPL_POWER_HIGHZ_REQ
;
910 /*====================================================================*/
912 static u_char
*parse_timing(u_char
*p
, u_char
*q
,
913 cistpl_timing_t
*timing
)
917 if (p
== q
) return NULL
;
919 if ((scale
& 3) != 3) {
920 if (++p
== q
) return NULL
;
921 timing
->wait
= SPEED_CVT(*p
);
922 timing
->waitscale
= exponent
[scale
& 3];
926 if ((scale
& 7) != 7) {
927 if (++p
== q
) return NULL
;
928 timing
->ready
= SPEED_CVT(*p
);
929 timing
->rdyscale
= exponent
[scale
& 7];
934 if (++p
== q
) return NULL
;
935 timing
->reserved
= SPEED_CVT(*p
);
936 timing
->rsvscale
= exponent
[scale
];
938 timing
->reserved
= 0;
943 /*====================================================================*/
945 static u_char
*parse_io(u_char
*p
, u_char
*q
, cistpl_io_t
*io
)
949 if (p
== q
) return NULL
;
955 io
->win
[0].len
= (1 << (io
->flags
& CISTPL_IO_LINES_MASK
));
959 if (++p
== q
) return NULL
;
960 io
->nwin
= (*p
& 0x0f) + 1;
961 bsz
= (*p
& 0x30) >> 4;
963 lsz
= (*p
& 0xc0) >> 6;
967 for (i
= 0; i
< io
->nwin
; i
++) {
970 for (j
= 0; j
< bsz
; j
++, p
++) {
971 if (p
== q
) return NULL
;
972 io
->win
[i
].base
+= *p
<< (j
*8);
974 for (j
= 0; j
< lsz
; j
++, p
++) {
975 if (p
== q
) return NULL
;
976 io
->win
[i
].len
+= *p
<< (j
*8);
982 /*====================================================================*/
984 static u_char
*parse_mem(u_char
*p
, u_char
*q
, cistpl_mem_t
*mem
)
986 int i
, j
, asz
, lsz
, has_ha
;
989 if (p
== q
) return NULL
;
991 mem
->nwin
= (*p
& 0x07) + 1;
992 lsz
= (*p
& 0x18) >> 3;
993 asz
= (*p
& 0x60) >> 5;
994 has_ha
= (*p
& 0x80);
995 if (++p
== q
) return NULL
;
997 for (i
= 0; i
< mem
->nwin
; i
++) {
999 for (j
= 0; j
< lsz
; j
++, p
++) {
1000 if (p
== q
) return NULL
;
1003 for (j
= 0; j
< asz
; j
++, p
++) {
1004 if (p
== q
) return NULL
;
1008 for (j
= 0; j
< asz
; j
++, p
++) {
1009 if (p
== q
) return NULL
;
1012 mem
->win
[i
].len
= len
<< 8;
1013 mem
->win
[i
].card_addr
= ca
<< 8;
1014 mem
->win
[i
].host_addr
= ha
<< 8;
1019 /*====================================================================*/
1021 static u_char
*parse_irq(u_char
*p
, u_char
*q
, cistpl_irq_t
*irq
)
1025 irq
->IRQInfo1
= *p
; p
++;
1026 if (irq
->IRQInfo1
& IRQ_INFO2_VALID
) {
1029 irq
->IRQInfo2
= (p
[1]<<8) + p
[0];
1035 /*====================================================================*/
1037 static int parse_cftable_entry(tuple_t
*tuple
,
1038 cistpl_cftable_entry_t
*entry
)
1040 u_char
*p
, *q
, features
;
1042 p
= tuple
->TupleData
;
1043 q
= p
+ tuple
->TupleDataLen
;
1044 entry
->index
= *p
& 0x3f;
1047 entry
->flags
|= CISTPL_CFTABLE_DEFAULT
;
1052 entry
->flags
|= CISTPL_CFTABLE_BVDS
;
1054 entry
->flags
|= CISTPL_CFTABLE_WP
;
1056 entry
->flags
|= CISTPL_CFTABLE_RDYBSY
;
1058 entry
->flags
|= CISTPL_CFTABLE_MWAIT
;
1059 entry
->interface
= *p
& 0x0f;
1061 entry
->interface
= 0;
1063 /* Process optional features */
1069 if ((features
& 3) > 0) {
1070 p
= parse_power(p
, q
, &entry
->vcc
);
1074 entry
->vcc
.present
= 0;
1075 if ((features
& 3) > 1) {
1076 p
= parse_power(p
, q
, &entry
->vpp1
);
1080 entry
->vpp1
.present
= 0;
1081 if ((features
& 3) > 2) {
1082 p
= parse_power(p
, q
, &entry
->vpp2
);
1086 entry
->vpp2
.present
= 0;
1088 /* Timing options */
1089 if (features
& 0x04) {
1090 p
= parse_timing(p
, q
, &entry
->timing
);
1094 entry
->timing
.wait
= 0;
1095 entry
->timing
.ready
= 0;
1096 entry
->timing
.reserved
= 0;
1099 /* I/O window options */
1100 if (features
& 0x08) {
1101 p
= parse_io(p
, q
, &entry
->io
);
1107 /* Interrupt options */
1108 if (features
& 0x10) {
1109 p
= parse_irq(p
, q
, &entry
->irq
);
1113 entry
->irq
.IRQInfo1
= 0;
1115 switch (features
& 0x60) {
1117 entry
->mem
.nwin
= 0;
1120 entry
->mem
.nwin
= 1;
1121 entry
->mem
.win
[0].len
= get_unaligned_le16(p
) << 8;
1122 entry
->mem
.win
[0].card_addr
= 0;
1123 entry
->mem
.win
[0].host_addr
= 0;
1129 entry
->mem
.nwin
= 1;
1130 entry
->mem
.win
[0].len
= get_unaligned_le16(p
) << 8;
1131 entry
->mem
.win
[0].card_addr
= get_unaligned_le16(p
+ 2) << 8;
1132 entry
->mem
.win
[0].host_addr
= 0;
1138 p
= parse_mem(p
, q
, &entry
->mem
);
1145 if (features
& 0x80) {
1148 entry
->flags
|= (*p
<< 8);
1155 entry
->subtuples
= q
-p
;
1160 /*====================================================================*/
1162 #ifdef CONFIG_CARDBUS
1164 static int parse_bar(tuple_t
*tuple
, cistpl_bar_t
*bar
)
1167 if (tuple
->TupleDataLen
< 6)
1169 p
= (u_char
*)tuple
->TupleData
;
1172 bar
->size
= get_unaligned_le32(p
);
1176 static int parse_config_cb(tuple_t
*tuple
, cistpl_config_t
*config
)
1180 p
= (u_char
*)tuple
->TupleData
;
1181 if ((*p
!= 3) || (tuple
->TupleDataLen
< 6))
1183 config
->last_idx
= *(++p
);
1185 config
->base
= get_unaligned_le32(p
);
1186 config
->subtuples
= tuple
->TupleDataLen
- 6;
1190 static int parse_cftable_entry_cb(tuple_t
*tuple
,
1191 cistpl_cftable_entry_cb_t
*entry
)
1193 u_char
*p
, *q
, features
;
1195 p
= tuple
->TupleData
;
1196 q
= p
+ tuple
->TupleDataLen
;
1197 entry
->index
= *p
& 0x3f;
1200 entry
->flags
|= CISTPL_CFTABLE_DEFAULT
;
1202 /* Process optional features */
1208 if ((features
& 3) > 0) {
1209 p
= parse_power(p
, q
, &entry
->vcc
);
1213 entry
->vcc
.present
= 0;
1214 if ((features
& 3) > 1) {
1215 p
= parse_power(p
, q
, &entry
->vpp1
);
1219 entry
->vpp1
.present
= 0;
1220 if ((features
& 3) > 2) {
1221 p
= parse_power(p
, q
, &entry
->vpp2
);
1225 entry
->vpp2
.present
= 0;
1227 /* I/O window options */
1228 if (features
& 0x08) {
1231 entry
->io
= *p
; p
++;
1235 /* Interrupt options */
1236 if (features
& 0x10) {
1237 p
= parse_irq(p
, q
, &entry
->irq
);
1241 entry
->irq
.IRQInfo1
= 0;
1243 if (features
& 0x20) {
1246 entry
->mem
= *p
; p
++;
1251 if (features
& 0x80) {
1254 entry
->flags
|= (*p
<< 8);
1258 entry
->flags
|= (*p
<< 16);
1266 entry
->subtuples
= q
-p
;
1273 /*====================================================================*/
1275 static int parse_device_geo(tuple_t
*tuple
, cistpl_device_geo_t
*geo
)
1280 p
= (u_char
*)tuple
->TupleData
;
1281 q
= p
+ tuple
->TupleDataLen
;
1283 for (n
= 0; n
< CISTPL_MAX_DEVICES
; n
++) {
1285 geo
->geo
[n
].buswidth
= p
[0];
1286 geo
->geo
[n
].erase_block
= 1 << (p
[1]-1);
1287 geo
->geo
[n
].read_block
= 1 << (p
[2]-1);
1288 geo
->geo
[n
].write_block
= 1 << (p
[3]-1);
1289 geo
->geo
[n
].partition
= 1 << (p
[4]-1);
1290 geo
->geo
[n
].interleave
= 1 << (p
[5]-1);
1297 /*====================================================================*/
1299 static int parse_vers_2(tuple_t
*tuple
, cistpl_vers_2_t
*v2
)
1303 if (tuple
->TupleDataLen
< 10)
1306 p
= tuple
->TupleData
;
1307 q
= p
+ tuple
->TupleDataLen
;
1311 v2
->dindex
= get_unaligned_le16(p
+2 );
1316 return parse_strings(p
, q
, 2, v2
->str
, &v2
->vendor
, NULL
);
1319 /*====================================================================*/
1321 static int parse_org(tuple_t
*tuple
, cistpl_org_t
*org
)
1326 p
= tuple
->TupleData
;
1327 q
= p
+ tuple
->TupleDataLen
;
1333 for (i
= 0; i
< 30; i
++) {
1335 if (*p
== '\0') break;
1342 /*====================================================================*/
1344 static int parse_format(tuple_t
*tuple
, cistpl_format_t
*fmt
)
1348 if (tuple
->TupleDataLen
< 10)
1351 p
= tuple
->TupleData
;
1355 fmt
->offset
= get_unaligned_le32(p
+ 2);
1356 fmt
->length
= get_unaligned_le32(p
+ 6);
1361 /*====================================================================*/
1363 int pcmcia_parse_tuple(tuple_t
*tuple
, cisparse_t
*parse
)
1367 if (tuple
->TupleDataLen
> tuple
->TupleDataMax
)
1369 switch (tuple
->TupleCode
) {
1371 case CISTPL_DEVICE_A
:
1372 ret
= parse_device(tuple
, &parse
->device
);
1374 #ifdef CONFIG_CARDBUS
1376 ret
= parse_bar(tuple
, &parse
->bar
);
1378 case CISTPL_CONFIG_CB
:
1379 ret
= parse_config_cb(tuple
, &parse
->config
);
1381 case CISTPL_CFTABLE_ENTRY_CB
:
1382 ret
= parse_cftable_entry_cb(tuple
, &parse
->cftable_entry_cb
);
1385 case CISTPL_CHECKSUM
:
1386 ret
= parse_checksum(tuple
, &parse
->checksum
);
1388 case CISTPL_LONGLINK_A
:
1389 case CISTPL_LONGLINK_C
:
1390 ret
= parse_longlink(tuple
, &parse
->longlink
);
1392 case CISTPL_LONGLINK_MFC
:
1393 ret
= parse_longlink_mfc(tuple
, &parse
->longlink_mfc
);
1396 ret
= parse_vers_1(tuple
, &parse
->version_1
);
1399 ret
= parse_altstr(tuple
, &parse
->altstr
);
1401 case CISTPL_JEDEC_A
:
1402 case CISTPL_JEDEC_C
:
1403 ret
= parse_jedec(tuple
, &parse
->jedec
);
1406 ret
= parse_manfid(tuple
, &parse
->manfid
);
1409 ret
= parse_funcid(tuple
, &parse
->funcid
);
1412 ret
= parse_funce(tuple
, &parse
->funce
);
1415 ret
= parse_config(tuple
, &parse
->config
);
1417 case CISTPL_CFTABLE_ENTRY
:
1418 ret
= parse_cftable_entry(tuple
, &parse
->cftable_entry
);
1420 case CISTPL_DEVICE_GEO
:
1421 case CISTPL_DEVICE_GEO_A
:
1422 ret
= parse_device_geo(tuple
, &parse
->device_geo
);
1425 ret
= parse_vers_2(tuple
, &parse
->vers_2
);
1428 ret
= parse_org(tuple
, &parse
->org
);
1431 case CISTPL_FORMAT_A
:
1432 ret
= parse_format(tuple
, &parse
->format
);
1434 case CISTPL_NO_LINK
:
1435 case CISTPL_LINKTARGET
:
1443 __cs_dbg(0, "parse_tuple failed %d\n", ret
);
1446 EXPORT_SYMBOL(pcmcia_parse_tuple
);
1448 /*======================================================================
1450 This is used internally by Card Services to look up CIS stuff.
1452 ======================================================================*/
1454 int pccard_read_tuple(struct pcmcia_socket
*s
, unsigned int function
, cisdata_t code
, void *parse
)
1460 buf
= kmalloc(256, GFP_KERNEL
);
1462 dev_printk(KERN_WARNING
, &s
->dev
, "no memory to read tuple\n");
1465 tuple
.DesiredTuple
= code
;
1466 tuple
.Attributes
= 0;
1467 if (function
== BIND_FN_ALL
)
1468 tuple
.Attributes
= TUPLE_RETURN_COMMON
;
1469 ret
= pccard_get_first_tuple(s
, function
, &tuple
);
1472 tuple
.TupleData
= buf
;
1473 tuple
.TupleOffset
= 0;
1474 tuple
.TupleDataMax
= 255;
1475 ret
= pccard_get_tuple_data(s
, &tuple
);
1478 ret
= pcmcia_parse_tuple(&tuple
, parse
);
1483 EXPORT_SYMBOL(pccard_read_tuple
);
1485 /*======================================================================
1487 This tries to determine if a card has a sensible CIS. It returns
1488 the number of tuples in the CIS, or 0 if the CIS looks bad. The
1489 checks include making sure several critical tuples are present and
1490 valid; seeing if the total number of tuples is reasonable; and
1491 looking for tuples that use reserved codes.
1493 ======================================================================*/
1495 int pccard_validate_cis(struct pcmcia_socket
*s
, unsigned int *info
)
1499 unsigned int count
= 0;
1500 int ret
, reserved
, dev_ok
= 0, ident_ok
= 0;
1505 tuple
= kmalloc(sizeof(*tuple
), GFP_KERNEL
);
1506 if (tuple
== NULL
) {
1507 dev_printk(KERN_WARNING
, &s
->dev
, "no memory to validate CIS\n");
1510 p
= kmalloc(sizeof(*p
), GFP_KERNEL
);
1513 dev_printk(KERN_WARNING
, &s
->dev
, "no memory to validate CIS\n");
1517 count
= reserved
= 0;
1518 tuple
->DesiredTuple
= RETURN_FIRST_TUPLE
;
1519 tuple
->Attributes
= TUPLE_RETURN_COMMON
;
1520 ret
= pccard_get_first_tuple(s
, BIND_FN_ALL
, tuple
);
1524 /* First tuple should be DEVICE; we should really have either that
1525 or a CFTABLE_ENTRY of some sort */
1526 if ((tuple
->TupleCode
== CISTPL_DEVICE
) ||
1527 (pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_CFTABLE_ENTRY
, p
) == 0) ||
1528 (pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_CFTABLE_ENTRY_CB
, p
) == 0))
1531 /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
1532 tuple, for card identification. Certain old D-Link and Linksys
1533 cards have only a broken VERS_2 tuple; hence the bogus test. */
1534 if ((pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_MANFID
, p
) == 0) ||
1535 (pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_VERS_1
, p
) == 0) ||
1536 (pccard_read_tuple(s
, BIND_FN_ALL
, CISTPL_VERS_2
, p
) != -ENOSPC
))
1539 if (!dev_ok
&& !ident_ok
)
1542 for (count
= 1; count
< MAX_TUPLES
; count
++) {
1543 ret
= pccard_get_next_tuple(s
, BIND_FN_ALL
, tuple
);
1546 if (((tuple
->TupleCode
> 0x23) && (tuple
->TupleCode
< 0x40)) ||
1547 ((tuple
->TupleCode
> 0x47) && (tuple
->TupleCode
< 0x80)) ||
1548 ((tuple
->TupleCode
> 0x90) && (tuple
->TupleCode
< 0xff)))
1551 if ((count
== MAX_TUPLES
) || (reserved
> 5) ||
1552 ((!dev_ok
|| !ident_ok
) && (count
> 10)))
1562 EXPORT_SYMBOL(pccard_validate_cis
);