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/cisreg.h>
32 #include <pcmcia/cistpl.h>
33 #include "cs_internal.h"
35 static const u_char mantissa[] = {
36 10, 12, 13, 15, 20, 25, 30, 35,
37 40, 45, 50, 55, 60, 70, 80, 90
40 static const u_int exponent[] = {
41 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
44 /* Convert an extended speed byte to a time in nanoseconds */
45 #define SPEED_CVT(v) \
46 (mantissa[(((v)>>3)&15)-1] * exponent[(v)&7] / 10)
47 /* Convert a power byte to a current in 0.1 microamps */
48 #define POWER_CVT(v) \
49 (mantissa[((v)>>3)&15] * exponent[(v)&7] / 10)
50 #define POWER_SCALE(v) (exponent[(v)&7])
52 /* Upper limit on reasonable # of tuples */
53 #define MAX_TUPLES 200
55 /* Bits in IRQInfo1 field */
56 #define IRQ_INFO2_VALID 0x10
60 module_param(cis_width, int, 0444);
62 void release_cis_mem(struct pcmcia_socket *s)
64 mutex_lock(&s->ops_mutex);
65 if (s->cis_mem.flags & MAP_ACTIVE) {
66 s->cis_mem.flags &= ~MAP_ACTIVE;
67 s->ops->set_mem_map(s, &s->cis_mem);
69 release_resource(s->cis_mem.res);
70 kfree(s->cis_mem.res);
71 s->cis_mem.res = NULL;
76 mutex_unlock(&s->ops_mutex);
80 * set_cis_map() - map the card memory at "card_offset" into virtual space.
82 * If flags & MAP_ATTRIB, map the attribute space, otherwise
83 * map the memory space.
85 * Must be called with ops_mutex held.
87 static void __iomem *set_cis_map(struct pcmcia_socket *s,
88 unsigned int card_offset, unsigned int flags)
90 pccard_mem_map *mem = &s->cis_mem;
93 if (!(s->features & SS_CAP_STATIC_MAP) && (mem->res == NULL)) {
94 mem->res = pcmcia_find_mem_region(0, s->map_size,
96 if (mem->res == NULL) {
97 dev_printk(KERN_NOTICE, &s->dev,
98 "cs: unable to map card memory!\n");
104 if (!(s->features & SS_CAP_STATIC_MAP) && (!s->cis_virt))
105 s->cis_virt = ioremap(mem->res->start, s->map_size);
107 mem->card_start = card_offset;
110 ret = s->ops->set_mem_map(s, mem);
112 iounmap(s->cis_virt);
117 if (s->features & SS_CAP_STATIC_MAP) {
119 iounmap(s->cis_virt);
120 s->cis_virt = ioremap(mem->static_start, s->map_size);
127 /* Bits in attr field */
129 #define IS_INDIRECT 8
132 * pcmcia_read_cis_mem() - low-level function to read CIS memory
134 * must be called with ops_mutex held
136 int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
137 u_int len, void *ptr)
139 void __iomem *sys, *end;
140 unsigned char *buf = ptr;
142 dev_dbg(&s->dev, "pcmcia_read_cis_mem(%d, %#x, %u)\n", attr, addr, len);
144 if (attr & IS_INDIRECT) {
145 /* Indirect accesses use a bunch of special registers at fixed
146 locations in common memory */
147 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
148 if (attr & IS_ATTR) {
150 flags = ICTRL0_AUTOINC;
153 sys = set_cis_map(s, 0, MAP_ACTIVE |
154 ((cis_width) ? MAP_16BIT : 0));
156 dev_dbg(&s->dev, "could not map memory\n");
157 memset(ptr, 0xff, len);
161 writeb(flags, sys+CISREG_ICTRL0);
162 writeb(addr & 0xff, sys+CISREG_IADDR0);
163 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
164 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
165 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
166 for ( ; len > 0; len--, buf++)
167 *buf = readb(sys+CISREG_IDATA0);
169 u_int inc = 1, card_offset, flags;
171 if (addr > CISTPL_MAX_CIS_SIZE) {
173 "attempt to read CIS mem at addr %#x", addr);
174 memset(ptr, 0xff, len);
178 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
185 card_offset = addr & ~(s->map_size-1);
187 sys = set_cis_map(s, card_offset, flags);
189 dev_dbg(&s->dev, "could not map memory\n");
190 memset(ptr, 0xff, len);
193 end = sys + s->map_size;
194 sys = sys + (addr & (s->map_size-1));
195 for ( ; len > 0; len--, buf++, sys += inc) {
200 card_offset += s->map_size;
204 dev_dbg(&s->dev, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n",
205 *(u_char *)(ptr+0), *(u_char *)(ptr+1),
206 *(u_char *)(ptr+2), *(u_char *)(ptr+3));
212 * pcmcia_write_cis_mem() - low-level function to write CIS memory
214 * Probably only useful for writing one-byte registers. Must be called
215 * with ops_mutex held.
217 int pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
218 u_int len, void *ptr)
220 void __iomem *sys, *end;
221 unsigned char *buf = ptr;
224 "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr, addr, len);
226 if (attr & IS_INDIRECT) {
227 /* Indirect accesses use a bunch of special registers at fixed
228 locations in common memory */
229 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
230 if (attr & IS_ATTR) {
232 flags = ICTRL0_AUTOINC;
235 sys = set_cis_map(s, 0, MAP_ACTIVE |
236 ((cis_width) ? MAP_16BIT : 0));
238 dev_dbg(&s->dev, "could not map memory\n");
242 writeb(flags, sys+CISREG_ICTRL0);
243 writeb(addr & 0xff, sys+CISREG_IADDR0);
244 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
245 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
246 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
247 for ( ; len > 0; len--, buf++)
248 writeb(*buf, sys+CISREG_IDATA0);
250 u_int inc = 1, card_offset, flags;
252 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
253 if (attr & IS_ATTR) {
259 card_offset = addr & ~(s->map_size-1);
261 sys = set_cis_map(s, card_offset, flags);
263 dev_dbg(&s->dev, "could not map memory\n");
267 end = sys + s->map_size;
268 sys = sys + (addr & (s->map_size-1));
269 for ( ; len > 0; len--, buf++, sys += inc) {
274 card_offset += s->map_size;
283 * read_cis_cache() - read CIS memory or its associated cache
285 * This is a wrapper around read_cis_mem, with the same interface,
286 * but which caches information, for cards whose CIS may not be
287 * readable all the time.
289 static int read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr,
290 size_t len, void *ptr)
292 struct cis_cache_entry *cis;
295 if (s->state & SOCKET_CARDBUS)
298 mutex_lock(&s->ops_mutex);
300 if (s->fake_cis_len >= addr+len)
301 memcpy(ptr, s->fake_cis+addr, len);
303 memset(ptr, 0xff, len);
306 mutex_unlock(&s->ops_mutex);
310 list_for_each_entry(cis, &s->cis_cache, node) {
311 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
312 memcpy(ptr, cis->cache, len);
313 mutex_unlock(&s->ops_mutex);
318 ret = pcmcia_read_cis_mem(s, attr, addr, len, ptr);
321 /* Copy data into the cache */
322 cis = kmalloc(sizeof(struct cis_cache_entry) + len, GFP_KERNEL);
327 memcpy(cis->cache, ptr, len);
328 list_add(&cis->node, &s->cis_cache);
331 mutex_unlock(&s->ops_mutex);
337 remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len)
339 struct cis_cache_entry *cis;
341 mutex_lock(&s->ops_mutex);
342 list_for_each_entry(cis, &s->cis_cache, node)
343 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
344 list_del(&cis->node);
348 mutex_unlock(&s->ops_mutex);
352 * destroy_cis_cache() - destroy the CIS cache
353 * @s: pcmcia_socket for which CIS cache shall be destroyed
355 * This destroys the CIS cache but keeps any fake CIS alive. Must be
356 * called with ops_mutex held.
358 void destroy_cis_cache(struct pcmcia_socket *s)
360 struct list_head *l, *n;
361 struct cis_cache_entry *cis;
363 list_for_each_safe(l, n, &s->cis_cache) {
364 cis = list_entry(l, struct cis_cache_entry, node);
365 list_del(&cis->node);
371 * verify_cis_cache() - does the CIS match what is in the CIS cache?
373 int verify_cis_cache(struct pcmcia_socket *s)
375 struct cis_cache_entry *cis;
379 if (s->state & SOCKET_CARDBUS)
382 buf = kmalloc(256, GFP_KERNEL);
384 dev_printk(KERN_WARNING, &s->dev,
385 "no memory for verifying CIS\n");
388 mutex_lock(&s->ops_mutex);
389 list_for_each_entry(cis, &s->cis_cache, node) {
395 ret = pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf);
396 if (ret || memcmp(buf, cis->cache, len) != 0) {
398 mutex_unlock(&s->ops_mutex);
403 mutex_unlock(&s->ops_mutex);
408 * pcmcia_replace_cis() - use a replacement CIS instead of the card's CIS
410 * For really bad cards, we provide a facility for uploading a
413 int pcmcia_replace_cis(struct pcmcia_socket *s,
414 const u8 *data, const size_t len)
416 if (len > CISTPL_MAX_CIS_SIZE) {
417 dev_printk(KERN_WARNING, &s->dev, "replacement CIS too big\n");
420 mutex_lock(&s->ops_mutex);
422 s->fake_cis = kmalloc(len, GFP_KERNEL);
423 if (s->fake_cis == NULL) {
424 dev_printk(KERN_WARNING, &s->dev, "no memory to replace CIS\n");
425 mutex_unlock(&s->ops_mutex);
428 s->fake_cis_len = len;
429 memcpy(s->fake_cis, data, len);
430 dev_info(&s->dev, "Using replacement CIS\n");
431 mutex_unlock(&s->ops_mutex);
435 /* The high-level CIS tuple services */
437 typedef struct tuple_flags {
444 #define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space)
445 #define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link)
446 #define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn)
447 #define SPACE(f) (((tuple_flags *)(&(f)))->space)
449 int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function,
455 if (!(s->state & SOCKET_PRESENT) || (s->state & SOCKET_CARDBUS))
457 tuple->TupleLink = tuple->Flags = 0;
459 /* Assume presence of a LONGLINK_C to address 0 */
460 tuple->CISOffset = tuple->LinkOffset = 0;
461 SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
463 if ((s->functions > 1) && !(tuple->Attributes & TUPLE_RETURN_COMMON)) {
464 cisdata_t req = tuple->DesiredTuple;
465 tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
466 if (pccard_get_next_tuple(s, function, tuple) == 0) {
467 tuple->DesiredTuple = CISTPL_LINKTARGET;
468 if (pccard_get_next_tuple(s, function, tuple) != 0)
471 tuple->CISOffset = tuple->TupleLink = 0;
472 tuple->DesiredTuple = req;
474 return pccard_get_next_tuple(s, function, tuple);
477 static int follow_link(struct pcmcia_socket *s, tuple_t *tuple)
483 if (MFC_FN(tuple->Flags)) {
484 /* Get indirect link from the MFC tuple */
485 ret = read_cis_cache(s, LINK_SPACE(tuple->Flags),
486 tuple->LinkOffset, 5, link);
489 ofs = get_unaligned_le32(link + 1);
490 SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR);
491 /* Move to the next indirect link */
492 tuple->LinkOffset += 5;
493 MFC_FN(tuple->Flags)--;
494 } else if (HAS_LINK(tuple->Flags)) {
495 ofs = tuple->LinkOffset;
496 SPACE(tuple->Flags) = LINK_SPACE(tuple->Flags);
497 HAS_LINK(tuple->Flags) = 0;
501 if (SPACE(tuple->Flags)) {
502 /* This is ugly, but a common CIS error is to code the long
503 link offset incorrectly, so we check the right spot... */
504 ret = read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
507 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
508 (strncmp(link+2, "CIS", 3) == 0))
510 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
511 /* Then, we try the wrong spot... */
514 ret = read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
517 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
518 (strncmp(link+2, "CIS", 3) == 0))
520 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
524 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function,
533 if (!(s->state & SOCKET_PRESENT) || (s->state & SOCKET_CARDBUS))
536 link[1] = tuple->TupleLink;
537 ofs = tuple->CISOffset + tuple->TupleLink;
538 attr = SPACE(tuple->Flags);
540 for (i = 0; i < MAX_TUPLES; i++) {
542 link[0] = CISTPL_END;
544 ret = read_cis_cache(s, attr, ofs, 2, link);
547 if (link[0] == CISTPL_NULL) {
553 /* End of chain? Follow long link if possible */
554 if (link[0] == CISTPL_END) {
555 ofs = follow_link(s, tuple);
558 attr = SPACE(tuple->Flags);
559 ret = read_cis_cache(s, attr, ofs, 2, link);
564 /* Is this a link tuple? Make a note of it */
565 if ((link[0] == CISTPL_LONGLINK_A) ||
566 (link[0] == CISTPL_LONGLINK_C) ||
567 (link[0] == CISTPL_LONGLINK_MFC) ||
568 (link[0] == CISTPL_LINKTARGET) ||
569 (link[0] == CISTPL_INDIRECT) ||
570 (link[0] == CISTPL_NO_LINK)) {
572 case CISTPL_LONGLINK_A:
573 HAS_LINK(tuple->Flags) = 1;
574 LINK_SPACE(tuple->Flags) = attr | IS_ATTR;
575 ret = read_cis_cache(s, attr, ofs+2, 4,
580 case CISTPL_LONGLINK_C:
581 HAS_LINK(tuple->Flags) = 1;
582 LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR;
583 ret = read_cis_cache(s, attr, ofs+2, 4,
588 case CISTPL_INDIRECT:
589 HAS_LINK(tuple->Flags) = 1;
590 LINK_SPACE(tuple->Flags) = IS_ATTR |
592 tuple->LinkOffset = 0;
594 case CISTPL_LONGLINK_MFC:
595 tuple->LinkOffset = ofs + 3;
596 LINK_SPACE(tuple->Flags) = attr;
597 if (function == BIND_FN_ALL) {
598 /* Follow all the MFC links */
599 ret = read_cis_cache(s, attr, ofs+2,
603 MFC_FN(tuple->Flags) = tmp;
605 /* Follow exactly one of the links */
606 MFC_FN(tuple->Flags) = 1;
607 tuple->LinkOffset += function * 5;
611 HAS_LINK(tuple->Flags) = 0;
614 if ((tuple->Attributes & TUPLE_RETURN_LINK) &&
615 (tuple->DesiredTuple == RETURN_FIRST_TUPLE))
618 if (tuple->DesiredTuple == RETURN_FIRST_TUPLE)
621 if (link[0] == tuple->DesiredTuple)
625 if (i == MAX_TUPLES) {
626 dev_dbg(&s->dev, "cs: overrun in pcmcia_get_next_tuple\n");
630 tuple->TupleCode = link[0];
631 tuple->TupleLink = link[1];
632 tuple->CISOffset = ofs + 2;
636 int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple)
644 if (tuple->TupleLink < tuple->TupleOffset)
646 len = tuple->TupleLink - tuple->TupleOffset;
647 tuple->TupleDataLen = tuple->TupleLink;
650 ret = read_cis_cache(s, SPACE(tuple->Flags),
651 tuple->CISOffset + tuple->TupleOffset,
652 min(len, (u_int) tuple->TupleDataMax),
660 /* Parsing routines for individual tuples */
662 static int parse_device(tuple_t *tuple, cistpl_device_t *device)
668 p = (u_char *)tuple->TupleData;
669 q = p + tuple->TupleDataLen;
672 for (i = 0; i < CISTPL_MAX_DEVICES; i++) {
676 device->dev[i].type = (*p >> 4);
677 device->dev[i].wp = (*p & 0x08) ? 1 : 0;
680 device->dev[i].speed = 0;
683 device->dev[i].speed = 250;
686 device->dev[i].speed = 200;
689 device->dev[i].speed = 150;
692 device->dev[i].speed = 100;
697 device->dev[i].speed = SPEED_CVT(*p);
713 device->dev[i].size = ((*p >> 3) + 1) * (512 << (scale*2));
723 static int parse_checksum(tuple_t *tuple, cistpl_checksum_t *csum)
726 if (tuple->TupleDataLen < 5)
728 p = (u_char *) tuple->TupleData;
729 csum->addr = tuple->CISOffset + get_unaligned_le16(p) - 2;
730 csum->len = get_unaligned_le16(p + 2);
731 csum->sum = *(p + 4);
736 static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link)
738 if (tuple->TupleDataLen < 4)
740 link->addr = get_unaligned_le32(tuple->TupleData);
745 static int parse_longlink_mfc(tuple_t *tuple, cistpl_longlink_mfc_t *link)
750 p = (u_char *)tuple->TupleData;
753 if (tuple->TupleDataLen <= link->nfn*5)
755 for (i = 0; i < link->nfn; i++) {
756 link->fn[i].space = *p; p++;
757 link->fn[i].addr = get_unaligned_le32(p);
764 static int parse_strings(u_char *p, u_char *q, int max,
765 char *s, u_char *ofs, u_char *found)
772 for (i = 0; i < max; i++) {
778 s[j++] = (*p == 0xff) ? '\0' : *p;
779 if ((*p == '\0') || (*p == 0xff))
784 if ((*p == 0xff) || (++p == q))
792 return (ns == max) ? 0 : -EINVAL;
796 static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1)
800 p = (u_char *)tuple->TupleData;
801 q = p + tuple->TupleDataLen;
803 vers_1->major = *p; p++;
804 vers_1->minor = *p; p++;
808 return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS,
809 vers_1->str, vers_1->ofs, &vers_1->ns);
813 static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr)
817 p = (u_char *)tuple->TupleData;
818 q = p + tuple->TupleDataLen;
820 return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS,
821 altstr->str, altstr->ofs, &altstr->ns);
825 static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec)
830 p = (u_char *)tuple->TupleData;
831 q = p + tuple->TupleDataLen;
833 for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) {
836 jedec->id[nid].mfr = p[0];
837 jedec->id[nid].info = p[1];
845 static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m)
847 if (tuple->TupleDataLen < 4)
849 m->manf = get_unaligned_le16(tuple->TupleData);
850 m->card = get_unaligned_le16(tuple->TupleData + 2);
855 static int parse_funcid(tuple_t *tuple, cistpl_funcid_t *f)
858 if (tuple->TupleDataLen < 2)
860 p = (u_char *)tuple->TupleData;
867 static int parse_funce(tuple_t *tuple, cistpl_funce_t *f)
871 if (tuple->TupleDataLen < 1)
873 p = (u_char *)tuple->TupleData;
875 for (i = 1; i < tuple->TupleDataLen; i++)
881 static int parse_config(tuple_t *tuple, cistpl_config_t *config)
886 p = (u_char *)tuple->TupleData;
888 rmsz = (*p & 0x3c) >> 2;
889 if (tuple->TupleDataLen < rasz+rmsz+4)
891 config->last_idx = *(++p);
894 for (i = 0; i <= rasz; i++)
895 config->base += p[i] << (8*i);
897 for (i = 0; i < 4; i++)
898 config->rmask[i] = 0;
899 for (i = 0; i <= rmsz; i++)
900 config->rmask[i>>2] += p[i] << (8*(i%4));
901 config->subtuples = tuple->TupleDataLen - (rasz+rmsz+4);
905 /* The following routines are all used to parse the nightmarish
906 * config table entries.
909 static u_char *parse_power(u_char *p, u_char *q, cistpl_power_t *pwr)
919 for (i = 0; i < 7; i++)
920 if (pwr->present & (1<<i)) {
923 pwr->param[i] = POWER_CVT(*p);
924 scale = POWER_SCALE(*p);
928 if ((*p & 0x7f) < 100)
930 (*p & 0x7f) * scale / 100;
932 pwr->flags |= CISTPL_POWER_HIGHZ_OK;
936 pwr->flags |= CISTPL_POWER_HIGHZ_REQ;
946 static u_char *parse_timing(u_char *p, u_char *q, cistpl_timing_t *timing)
953 if ((scale & 3) != 3) {
956 timing->wait = SPEED_CVT(*p);
957 timing->waitscale = exponent[scale & 3];
961 if ((scale & 7) != 7) {
964 timing->ready = SPEED_CVT(*p);
965 timing->rdyscale = exponent[scale & 7];
972 timing->reserved = SPEED_CVT(*p);
973 timing->rsvscale = exponent[scale];
975 timing->reserved = 0;
981 static u_char *parse_io(u_char *p, u_char *q, cistpl_io_t *io)
992 io->win[0].len = (1 << (io->flags & CISTPL_IO_LINES_MASK));
998 io->nwin = (*p & 0x0f) + 1;
999 bsz = (*p & 0x30) >> 4;
1002 lsz = (*p & 0xc0) >> 6;
1007 for (i = 0; i < io->nwin; i++) {
1008 io->win[i].base = 0;
1010 for (j = 0; j < bsz; j++, p++) {
1013 io->win[i].base += *p << (j*8);
1015 for (j = 0; j < lsz; j++, p++) {
1018 io->win[i].len += *p << (j*8);
1025 static u_char *parse_mem(u_char *p, u_char *q, cistpl_mem_t *mem)
1027 int i, j, asz, lsz, has_ha;
1033 mem->nwin = (*p & 0x07) + 1;
1034 lsz = (*p & 0x18) >> 3;
1035 asz = (*p & 0x60) >> 5;
1036 has_ha = (*p & 0x80);
1040 for (i = 0; i < mem->nwin; i++) {
1042 for (j = 0; j < lsz; j++, p++) {
1047 for (j = 0; j < asz; j++, p++) {
1053 for (j = 0; j < asz; j++, p++) {
1058 mem->win[i].len = len << 8;
1059 mem->win[i].card_addr = ca << 8;
1060 mem->win[i].host_addr = ha << 8;
1066 static u_char *parse_irq(u_char *p, u_char *q, cistpl_irq_t *irq)
1070 irq->IRQInfo1 = *p; p++;
1071 if (irq->IRQInfo1 & IRQ_INFO2_VALID) {
1074 irq->IRQInfo2 = (p[1]<<8) + p[0];
1081 static int parse_cftable_entry(tuple_t *tuple,
1082 cistpl_cftable_entry_t *entry)
1084 u_char *p, *q, features;
1086 p = tuple->TupleData;
1087 q = p + tuple->TupleDataLen;
1088 entry->index = *p & 0x3f;
1091 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1096 entry->flags |= CISTPL_CFTABLE_BVDS;
1098 entry->flags |= CISTPL_CFTABLE_WP;
1100 entry->flags |= CISTPL_CFTABLE_RDYBSY;
1102 entry->flags |= CISTPL_CFTABLE_MWAIT;
1103 entry->interface = *p & 0x0f;
1105 entry->interface = 0;
1107 /* Process optional features */
1113 if ((features & 3) > 0) {
1114 p = parse_power(p, q, &entry->vcc);
1118 entry->vcc.present = 0;
1119 if ((features & 3) > 1) {
1120 p = parse_power(p, q, &entry->vpp1);
1124 entry->vpp1.present = 0;
1125 if ((features & 3) > 2) {
1126 p = parse_power(p, q, &entry->vpp2);
1130 entry->vpp2.present = 0;
1132 /* Timing options */
1133 if (features & 0x04) {
1134 p = parse_timing(p, q, &entry->timing);
1138 entry->timing.wait = 0;
1139 entry->timing.ready = 0;
1140 entry->timing.reserved = 0;
1143 /* I/O window options */
1144 if (features & 0x08) {
1145 p = parse_io(p, q, &entry->io);
1151 /* Interrupt options */
1152 if (features & 0x10) {
1153 p = parse_irq(p, q, &entry->irq);
1157 entry->irq.IRQInfo1 = 0;
1159 switch (features & 0x60) {
1161 entry->mem.nwin = 0;
1164 entry->mem.nwin = 1;
1165 entry->mem.win[0].len = get_unaligned_le16(p) << 8;
1166 entry->mem.win[0].card_addr = 0;
1167 entry->mem.win[0].host_addr = 0;
1173 entry->mem.nwin = 1;
1174 entry->mem.win[0].len = get_unaligned_le16(p) << 8;
1175 entry->mem.win[0].card_addr = get_unaligned_le16(p + 2) << 8;
1176 entry->mem.win[0].host_addr = 0;
1182 p = parse_mem(p, q, &entry->mem);
1189 if (features & 0x80) {
1192 entry->flags |= (*p << 8);
1199 entry->subtuples = q-p;
1205 static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo)
1210 p = (u_char *)tuple->TupleData;
1211 q = p + tuple->TupleDataLen;
1213 for (n = 0; n < CISTPL_MAX_DEVICES; n++) {
1216 geo->geo[n].buswidth = p[0];
1217 geo->geo[n].erase_block = 1 << (p[1]-1);
1218 geo->geo[n].read_block = 1 << (p[2]-1);
1219 geo->geo[n].write_block = 1 << (p[3]-1);
1220 geo->geo[n].partition = 1 << (p[4]-1);
1221 geo->geo[n].interleave = 1 << (p[5]-1);
1229 static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2)
1233 if (tuple->TupleDataLen < 10)
1236 p = tuple->TupleData;
1237 q = p + tuple->TupleDataLen;
1241 v2->dindex = get_unaligned_le16(p + 2);
1246 return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL);
1250 static int parse_org(tuple_t *tuple, cistpl_org_t *org)
1255 p = tuple->TupleData;
1256 q = p + tuple->TupleDataLen;
1262 for (i = 0; i < 30; i++) {
1273 static int parse_format(tuple_t *tuple, cistpl_format_t *fmt)
1277 if (tuple->TupleDataLen < 10)
1280 p = tuple->TupleData;
1284 fmt->offset = get_unaligned_le32(p + 2);
1285 fmt->length = get_unaligned_le32(p + 6);
1291 int pcmcia_parse_tuple(tuple_t *tuple, cisparse_t *parse)
1295 if (tuple->TupleDataLen > tuple->TupleDataMax)
1297 switch (tuple->TupleCode) {
1299 case CISTPL_DEVICE_A:
1300 ret = parse_device(tuple, &parse->device);
1302 case CISTPL_CHECKSUM:
1303 ret = parse_checksum(tuple, &parse->checksum);
1305 case CISTPL_LONGLINK_A:
1306 case CISTPL_LONGLINK_C:
1307 ret = parse_longlink(tuple, &parse->longlink);
1309 case CISTPL_LONGLINK_MFC:
1310 ret = parse_longlink_mfc(tuple, &parse->longlink_mfc);
1313 ret = parse_vers_1(tuple, &parse->version_1);
1316 ret = parse_altstr(tuple, &parse->altstr);
1318 case CISTPL_JEDEC_A:
1319 case CISTPL_JEDEC_C:
1320 ret = parse_jedec(tuple, &parse->jedec);
1323 ret = parse_manfid(tuple, &parse->manfid);
1326 ret = parse_funcid(tuple, &parse->funcid);
1329 ret = parse_funce(tuple, &parse->funce);
1332 ret = parse_config(tuple, &parse->config);
1334 case CISTPL_CFTABLE_ENTRY:
1335 ret = parse_cftable_entry(tuple, &parse->cftable_entry);
1337 case CISTPL_DEVICE_GEO:
1338 case CISTPL_DEVICE_GEO_A:
1339 ret = parse_device_geo(tuple, &parse->device_geo);
1342 ret = parse_vers_2(tuple, &parse->vers_2);
1345 ret = parse_org(tuple, &parse->org);
1348 case CISTPL_FORMAT_A:
1349 ret = parse_format(tuple, &parse->format);
1351 case CISTPL_NO_LINK:
1352 case CISTPL_LINKTARGET:
1360 pr_debug("parse_tuple failed %d\n", ret);
1363 EXPORT_SYMBOL(pcmcia_parse_tuple);
1367 * pccard_validate_cis() - check whether card has a sensible CIS
1368 * @s: the struct pcmcia_socket we are to check
1369 * @info: returns the number of tuples in the (valid) CIS, or 0
1371 * This tries to determine if a card has a sensible CIS. In @info, it
1372 * returns the number of tuples in the CIS, or 0 if the CIS looks bad. The
1373 * checks include making sure several critical tuples are present and
1374 * valid; seeing if the total number of tuples is reasonable; and
1375 * looking for tuples that use reserved codes.
1377 * The function returns 0 on success.
1379 int pccard_validate_cis(struct pcmcia_socket *s, unsigned int *info)
1383 unsigned int count = 0;
1384 int ret, reserved, dev_ok = 0, ident_ok = 0;
1389 if (s->functions || !(s->state & SOCKET_PRESENT)) {
1394 /* We do not want to validate the CIS cache... */
1395 mutex_lock(&s->ops_mutex);
1396 destroy_cis_cache(s);
1397 mutex_unlock(&s->ops_mutex);
1399 tuple = kmalloc(sizeof(*tuple), GFP_KERNEL);
1400 if (tuple == NULL) {
1401 dev_warn(&s->dev, "no memory to validate CIS\n");
1404 p = kmalloc(sizeof(*p), GFP_KERNEL);
1407 dev_warn(&s->dev, "no memory to validate CIS\n");
1411 count = reserved = 0;
1412 tuple->DesiredTuple = RETURN_FIRST_TUPLE;
1413 tuple->Attributes = TUPLE_RETURN_COMMON;
1414 ret = pccard_get_first_tuple(s, BIND_FN_ALL, tuple);
1418 /* First tuple should be DEVICE; we should really have either that
1419 or a CFTABLE_ENTRY of some sort */
1420 if ((tuple->TupleCode == CISTPL_DEVICE) ||
1421 (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_CFTABLE_ENTRY, p)) ||
1422 (!pccard_read_tuple(s, BIND_FN_ALL, CISTPL_CFTABLE_ENTRY_CB, p)))
1425 /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
1426 tuple, for card identification. Certain old D-Link and Linksys
1427 cards have only a broken VERS_2 tuple; hence the bogus test. */
1428 if ((pccard_read_tuple(s, BIND_FN_ALL, CISTPL_MANFID, p) == 0) ||
1429 (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_VERS_1, p) == 0) ||
1430 (pccard_read_tuple(s, BIND_FN_ALL, CISTPL_VERS_2, p) != -ENOSPC))
1433 if (!dev_ok && !ident_ok)
1436 for (count = 1; count < MAX_TUPLES; count++) {
1437 ret = pccard_get_next_tuple(s, BIND_FN_ALL, tuple);
1440 if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) ||
1441 ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) ||
1442 ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff)))
1445 if ((count == MAX_TUPLES) || (reserved > 5) ||
1446 ((!dev_ok || !ident_ok) && (count > 10)))
1452 /* invalidate CIS cache on failure */
1453 if (!dev_ok || !ident_ok || !count) {
1454 mutex_lock(&s->ops_mutex);
1455 destroy_cis_cache(s);
1456 mutex_unlock(&s->ops_mutex);
1468 #define to_socket(_dev) container_of(_dev, struct pcmcia_socket, dev)
1470 static ssize_t pccard_extract_cis(struct pcmcia_socket *s, char *buf,
1471 loff_t off, size_t count)
1477 u_char *tuplebuffer;
1480 tuplebuffer = kmalloc(sizeof(u_char) * 256, GFP_KERNEL);
1484 tempbuffer = kmalloc(sizeof(u_char) * 258, GFP_KERNEL);
1490 memset(&tuple, 0, sizeof(tuple_t));
1492 tuple.Attributes = TUPLE_RETURN_LINK | TUPLE_RETURN_COMMON;
1493 tuple.DesiredTuple = RETURN_FIRST_TUPLE;
1494 tuple.TupleOffset = 0;
1496 status = pccard_get_first_tuple(s, BIND_FN_ALL, &tuple);
1498 tuple.TupleData = tuplebuffer;
1499 tuple.TupleDataMax = 255;
1500 memset(tuplebuffer, 0, sizeof(u_char) * 255);
1502 status = pccard_get_tuple_data(s, &tuple);
1506 if (off < (pointer + 2 + tuple.TupleDataLen)) {
1507 tempbuffer[0] = tuple.TupleCode & 0xff;
1508 tempbuffer[1] = tuple.TupleLink & 0xff;
1509 for (i = 0; i < tuple.TupleDataLen; i++)
1510 tempbuffer[i + 2] = tuplebuffer[i] & 0xff;
1512 for (i = 0; i < (2 + tuple.TupleDataLen); i++) {
1513 if (((i + pointer) >= off) &&
1514 (i + pointer) < (off + count)) {
1515 buf[ret] = tempbuffer[i];
1521 pointer += 2 + tuple.TupleDataLen;
1523 if (pointer >= (off + count))
1526 if (tuple.TupleCode == CISTPL_END)
1528 status = pccard_get_next_tuple(s, BIND_FN_ALL, &tuple);
1539 static ssize_t pccard_show_cis(struct file *filp, struct kobject *kobj,
1540 struct bin_attribute *bin_attr,
1541 char *buf, loff_t off, size_t count)
1543 unsigned int size = 0x200;
1548 struct pcmcia_socket *s;
1549 unsigned int chains = 1;
1551 if (off + count > size)
1554 s = to_socket(container_of(kobj, struct device, kobj));
1556 if (!(s->state & SOCKET_PRESENT))
1558 if (!s->functions && pccard_validate_cis(s, &chains))
1563 count = pccard_extract_cis(s, buf, off, count);
1570 static ssize_t pccard_store_cis(struct file *filp, struct kobject *kobj,
1571 struct bin_attribute *bin_attr,
1572 char *buf, loff_t off, size_t count)
1574 struct pcmcia_socket *s;
1577 s = to_socket(container_of(kobj, struct device, kobj));
1582 if (count >= CISTPL_MAX_CIS_SIZE)
1585 if (!(s->state & SOCKET_PRESENT))
1588 error = pcmcia_replace_cis(s, buf, count);
1592 pcmcia_parse_uevents(s, PCMCIA_UEVENT_REQUERY);
1598 struct bin_attribute pccard_cis_attr = {
1599 .attr = { .name = "cis", .mode = S_IRUGO | S_IWUSR },
1601 .read = pccard_show_cis,
1602 .write = pccard_store_cis,