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 printk(KERN_NOTICE "cs: unable to map card memory!\n");
101 if (!(s->features & SS_CAP_STATIC_MAP) && (!s->cis_virt))
102 s->cis_virt = ioremap(mem->res->start, s->map_size);
104 mem->card_start = card_offset;
107 ret = s->ops->set_mem_map(s, mem);
109 iounmap(s->cis_virt);
114 if (s->features & SS_CAP_STATIC_MAP) {
116 iounmap(s->cis_virt);
117 s->cis_virt = ioremap(mem->static_start, s->map_size);
123 /*======================================================================
125 Low-level functions to read and write CIS memory. I think the
126 write routine is only useful for writing one-byte registers.
128 ======================================================================*/
130 /* Bits in attr field */
132 #define IS_INDIRECT 8
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 cs_dbg(s, 3, "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 | ((cis_width) ? MAP_16BIT : 0));
153 memset(ptr, 0xff, len);
157 writeb(flags, sys+CISREG_ICTRL0);
158 writeb(addr & 0xff, sys+CISREG_IADDR0);
159 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
160 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
161 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
162 for ( ; len > 0; len--, buf++)
163 *buf = readb(sys+CISREG_IDATA0);
165 u_int inc = 1, card_offset, flags;
167 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
174 card_offset = addr & ~(s->map_size-1);
176 sys = set_cis_map(s, card_offset, flags);
178 memset(ptr, 0xff, len);
181 end = sys + s->map_size;
182 sys = sys + (addr & (s->map_size-1));
183 for ( ; len > 0; len--, buf++, sys += inc) {
188 card_offset += s->map_size;
192 cs_dbg(s, 3, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n",
193 *(u_char *)(ptr+0), *(u_char *)(ptr+1),
194 *(u_char *)(ptr+2), *(u_char *)(ptr+3));
197 EXPORT_SYMBOL(pcmcia_read_cis_mem);
200 void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
201 u_int len, void *ptr)
203 void __iomem *sys, *end;
204 unsigned char *buf = ptr;
206 cs_dbg(s, 3, "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr, addr, len);
208 if (attr & IS_INDIRECT) {
209 /* Indirect accesses use a bunch of special registers at fixed
210 locations in common memory */
211 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
212 if (attr & IS_ATTR) {
214 flags = ICTRL0_AUTOINC;
217 sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
219 return; /* FIXME: Error */
221 writeb(flags, sys+CISREG_ICTRL0);
222 writeb(addr & 0xff, sys+CISREG_IADDR0);
223 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
224 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
225 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
226 for ( ; len > 0; len--, buf++)
227 writeb(*buf, sys+CISREG_IDATA0);
229 u_int inc = 1, card_offset, flags;
231 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
232 if (attr & IS_ATTR) {
238 card_offset = addr & ~(s->map_size-1);
240 sys = set_cis_map(s, card_offset, flags);
242 return; /* FIXME: error */
244 end = sys + s->map_size;
245 sys = sys + (addr & (s->map_size-1));
246 for ( ; len > 0; len--, buf++, sys += inc) {
251 card_offset += s->map_size;
256 EXPORT_SYMBOL(pcmcia_write_cis_mem);
259 /*======================================================================
261 This is a wrapper around read_cis_mem, with the same interface,
262 but which caches information, for cards whose CIS may not be
263 readable all the time.
265 ======================================================================*/
267 static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr,
268 u_int len, void *ptr)
270 struct cis_cache_entry *cis;
274 if (s->fake_cis_len > addr+len)
275 memcpy(ptr, s->fake_cis+addr, len);
277 memset(ptr, 0xff, len);
281 list_for_each_entry(cis, &s->cis_cache, node) {
282 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
283 memcpy(ptr, cis->cache, len);
288 #ifdef CONFIG_CARDBUS
289 if (s->state & SOCKET_CARDBUS)
290 ret = read_cb_mem(s, attr, addr, len, ptr);
293 ret = pcmcia_read_cis_mem(s, attr, addr, len, ptr);
296 /* Copy data into the cache */
297 cis = kmalloc(sizeof(struct cis_cache_entry) + len, GFP_KERNEL);
302 memcpy(cis->cache, ptr, len);
303 list_add(&cis->node, &s->cis_cache);
309 remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len)
311 struct cis_cache_entry *cis;
313 list_for_each_entry(cis, &s->cis_cache, node)
314 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
315 list_del(&cis->node);
321 void destroy_cis_cache(struct pcmcia_socket *s)
323 struct list_head *l, *n;
325 list_for_each_safe(l, n, &s->cis_cache) {
326 struct cis_cache_entry *cis = list_entry(l, struct cis_cache_entry, node);
328 list_del(&cis->node);
333 * If there was a fake CIS, destroy that as well.
338 EXPORT_SYMBOL(destroy_cis_cache);
340 /*======================================================================
342 This verifies if the CIS of a card matches what is in the CIS
345 ======================================================================*/
347 int verify_cis_cache(struct pcmcia_socket *s)
349 struct cis_cache_entry *cis;
352 buf = kmalloc(256, GFP_KERNEL);
355 list_for_each_entry(cis, &s->cis_cache, node) {
360 #ifdef CONFIG_CARDBUS
361 if (s->state & SOCKET_CARDBUS)
362 read_cb_mem(s, cis->attr, cis->addr, len, buf);
365 pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf);
367 if (memcmp(buf, cis->cache, len) != 0) {
376 /*======================================================================
378 For really bad cards, we provide a facility for uploading a
381 ======================================================================*/
383 int pcmcia_replace_cis(struct pcmcia_socket *s, cisdump_t *cis)
387 if (cis->Length > CISTPL_MAX_CIS_SIZE)
389 s->fake_cis = kmalloc(cis->Length, GFP_KERNEL);
390 if (s->fake_cis == NULL)
391 return CS_OUT_OF_RESOURCE;
392 s->fake_cis_len = cis->Length;
393 memcpy(s->fake_cis, cis->Data, cis->Length);
396 EXPORT_SYMBOL(pcmcia_replace_cis);
398 /*======================================================================
400 The high-level CIS tuple services
402 ======================================================================*/
404 typedef struct tuple_flags {
411 #define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space)
412 #define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link)
413 #define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn)
414 #define SPACE(f) (((tuple_flags *)(&(f)))->space)
416 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int func, tuple_t *tuple);
418 int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
421 return CS_BAD_HANDLE;
422 if (!(s->state & SOCKET_PRESENT))
424 tuple->TupleLink = tuple->Flags = 0;
425 #ifdef CONFIG_CARDBUS
426 if (s->state & SOCKET_CARDBUS) {
427 struct pci_dev *dev = s->cb_dev;
429 pci_bus_read_config_dword(dev->subordinate, 0, PCI_CARDBUS_CIS, &ptr);
430 tuple->CISOffset = ptr & ~7;
431 SPACE(tuple->Flags) = (ptr & 7);
435 /* Assume presence of a LONGLINK_C to address 0 */
436 tuple->CISOffset = tuple->LinkOffset = 0;
437 SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
439 if (!(s->state & SOCKET_CARDBUS) && (s->functions > 1) &&
440 !(tuple->Attributes & TUPLE_RETURN_COMMON)) {
441 cisdata_t req = tuple->DesiredTuple;
442 tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
443 if (pccard_get_next_tuple(s, function, tuple) == CS_SUCCESS) {
444 tuple->DesiredTuple = CISTPL_LINKTARGET;
445 if (pccard_get_next_tuple(s, function, tuple) != CS_SUCCESS)
446 return CS_NO_MORE_ITEMS;
448 tuple->CISOffset = tuple->TupleLink = 0;
449 tuple->DesiredTuple = req;
451 return pccard_get_next_tuple(s, function, tuple);
453 EXPORT_SYMBOL(pccard_get_first_tuple);
455 static int follow_link(struct pcmcia_socket *s, tuple_t *tuple)
460 if (MFC_FN(tuple->Flags)) {
461 /* Get indirect link from the MFC tuple */
462 read_cis_cache(s, LINK_SPACE(tuple->Flags),
463 tuple->LinkOffset, 5, link);
464 ofs = get_unaligned_le32(link + 1);
465 SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR);
466 /* Move to the next indirect link */
467 tuple->LinkOffset += 5;
468 MFC_FN(tuple->Flags)--;
469 } else if (HAS_LINK(tuple->Flags)) {
470 ofs = tuple->LinkOffset;
471 SPACE(tuple->Flags) = LINK_SPACE(tuple->Flags);
472 HAS_LINK(tuple->Flags) = 0;
476 if (!(s->state & SOCKET_CARDBUS) && SPACE(tuple->Flags)) {
477 /* This is ugly, but a common CIS error is to code the long
478 link offset incorrectly, so we check the right spot... */
479 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
480 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
481 (strncmp(link+2, "CIS", 3) == 0))
483 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
484 /* Then, we try the wrong 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);
495 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
501 return CS_BAD_HANDLE;
502 if (!(s->state & SOCKET_PRESENT))
505 link[1] = tuple->TupleLink;
506 ofs = tuple->CISOffset + tuple->TupleLink;
507 attr = SPACE(tuple->Flags);
509 for (i = 0; i < MAX_TUPLES; i++) {
510 if (link[1] == 0xff) {
511 link[0] = CISTPL_END;
513 read_cis_cache(s, attr, ofs, 2, link);
514 if (link[0] == CISTPL_NULL) {
519 /* End of chain? Follow long link if possible */
520 if (link[0] == CISTPL_END) {
521 if ((ofs = follow_link(s, tuple)) < 0)
522 return CS_NO_MORE_ITEMS;
523 attr = SPACE(tuple->Flags);
524 read_cis_cache(s, attr, ofs, 2, link);
527 /* Is this a link tuple? Make a note of it */
528 if ((link[0] == CISTPL_LONGLINK_A) ||
529 (link[0] == CISTPL_LONGLINK_C) ||
530 (link[0] == CISTPL_LONGLINK_MFC) ||
531 (link[0] == CISTPL_LINKTARGET) ||
532 (link[0] == CISTPL_INDIRECT) ||
533 (link[0] == CISTPL_NO_LINK)) {
535 case CISTPL_LONGLINK_A:
536 HAS_LINK(tuple->Flags) = 1;
537 LINK_SPACE(tuple->Flags) = attr | IS_ATTR;
538 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
540 case CISTPL_LONGLINK_C:
541 HAS_LINK(tuple->Flags) = 1;
542 LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR;
543 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
545 case CISTPL_INDIRECT:
546 HAS_LINK(tuple->Flags) = 1;
547 LINK_SPACE(tuple->Flags) = IS_ATTR | IS_INDIRECT;
548 tuple->LinkOffset = 0;
550 case CISTPL_LONGLINK_MFC:
551 tuple->LinkOffset = ofs + 3;
552 LINK_SPACE(tuple->Flags) = attr;
553 if (function == BIND_FN_ALL) {
554 /* Follow all the MFC links */
555 read_cis_cache(s, attr, ofs+2, 1, &tmp);
556 MFC_FN(tuple->Flags) = tmp;
558 /* Follow exactly one of the links */
559 MFC_FN(tuple->Flags) = 1;
560 tuple->LinkOffset += function * 5;
564 HAS_LINK(tuple->Flags) = 0;
567 if ((tuple->Attributes & TUPLE_RETURN_LINK) &&
568 (tuple->DesiredTuple == RETURN_FIRST_TUPLE))
571 if (tuple->DesiredTuple == RETURN_FIRST_TUPLE)
574 if (link[0] == tuple->DesiredTuple)
578 if (i == MAX_TUPLES) {
579 cs_dbg(s, 1, "cs: overrun in pcmcia_get_next_tuple\n");
580 return CS_NO_MORE_ITEMS;
583 tuple->TupleCode = link[0];
584 tuple->TupleLink = link[1];
585 tuple->CISOffset = ofs + 2;
588 EXPORT_SYMBOL(pccard_get_next_tuple);
590 /*====================================================================*/
592 #define _MIN(a, b) (((a) < (b)) ? (a) : (b))
594 int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple)
599 return CS_BAD_HANDLE;
601 if (tuple->TupleLink < tuple->TupleOffset)
602 return CS_NO_MORE_ITEMS;
603 len = tuple->TupleLink - tuple->TupleOffset;
604 tuple->TupleDataLen = tuple->TupleLink;
607 read_cis_cache(s, SPACE(tuple->Flags),
608 tuple->CISOffset + tuple->TupleOffset,
609 _MIN(len, tuple->TupleDataMax), tuple->TupleData);
612 EXPORT_SYMBOL(pccard_get_tuple_data);
615 /*======================================================================
617 Parsing routines for individual tuples
619 ======================================================================*/
621 static int parse_device(tuple_t *tuple, cistpl_device_t *device)
627 p = (u_char *)tuple->TupleData;
628 q = p + tuple->TupleDataLen;
631 for (i = 0; i < CISTPL_MAX_DEVICES; i++) {
633 if (*p == 0xff) break;
634 device->dev[i].type = (*p >> 4);
635 device->dev[i].wp = (*p & 0x08) ? 1 : 0;
637 case 0: device->dev[i].speed = 0; break;
638 case 1: device->dev[i].speed = 250; break;
639 case 2: device->dev[i].speed = 200; break;
640 case 3: device->dev[i].speed = 150; break;
641 case 4: device->dev[i].speed = 100; break;
643 if (++p == q) return CS_BAD_TUPLE;
644 device->dev[i].speed = SPEED_CVT(*p);
646 if (++p == q) return CS_BAD_TUPLE;
652 if (++p == q) return CS_BAD_TUPLE;
653 if (*p == 0xff) break;
655 if (scale == 7) return CS_BAD_TUPLE;
656 device->dev[i].size = ((*p >> 3) + 1) * (512 << (scale*2));
664 /*====================================================================*/
666 static int parse_checksum(tuple_t *tuple, cistpl_checksum_t *csum)
669 if (tuple->TupleDataLen < 5)
671 p = (u_char *) tuple->TupleData;
672 csum->addr = tuple->CISOffset + get_unaligned_le16(p) - 2;
673 csum->len = get_unaligned_le16(p + 2);
674 csum->sum = *(p + 4);
678 /*====================================================================*/
680 static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link)
682 if (tuple->TupleDataLen < 4)
684 link->addr = get_unaligned_le32(tuple->TupleData);
688 /*====================================================================*/
690 static int parse_longlink_mfc(tuple_t *tuple,
691 cistpl_longlink_mfc_t *link)
696 p = (u_char *)tuple->TupleData;
699 if (tuple->TupleDataLen <= link->nfn*5)
701 for (i = 0; i < link->nfn; i++) {
702 link->fn[i].space = *p; p++;
703 link->fn[i].addr = get_unaligned_le32(p);
709 /*====================================================================*/
711 static int parse_strings(u_char *p, u_char *q, int max,
712 char *s, u_char *ofs, u_char *found)
716 if (p == q) return CS_BAD_TUPLE;
718 for (i = 0; i < max; i++) {
719 if (*p == 0xff) break;
723 s[j++] = (*p == 0xff) ? '\0' : *p;
724 if ((*p == '\0') || (*p == 0xff)) break;
725 if (++p == q) return CS_BAD_TUPLE;
727 if ((*p == 0xff) || (++p == q)) break;
733 return (ns == max) ? CS_SUCCESS : CS_BAD_TUPLE;
737 /*====================================================================*/
739 static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1)
743 p = (u_char *)tuple->TupleData;
744 q = p + tuple->TupleDataLen;
746 vers_1->major = *p; p++;
747 vers_1->minor = *p; p++;
748 if (p >= q) return CS_BAD_TUPLE;
750 return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS,
751 vers_1->str, vers_1->ofs, &vers_1->ns);
754 /*====================================================================*/
756 static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr)
760 p = (u_char *)tuple->TupleData;
761 q = p + tuple->TupleDataLen;
763 return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS,
764 altstr->str, altstr->ofs, &altstr->ns);
767 /*====================================================================*/
769 static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec)
774 p = (u_char *)tuple->TupleData;
775 q = p + tuple->TupleDataLen;
777 for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) {
779 jedec->id[nid].mfr = p[0];
780 jedec->id[nid].info = p[1];
787 /*====================================================================*/
789 static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m)
791 if (tuple->TupleDataLen < 4)
793 m->manf = get_unaligned_le16(tuple->TupleData);
794 m->card = get_unaligned_le16(tuple->TupleData + 2);
798 /*====================================================================*/
800 static int parse_funcid(tuple_t *tuple, cistpl_funcid_t *f)
803 if (tuple->TupleDataLen < 2)
805 p = (u_char *)tuple->TupleData;
811 /*====================================================================*/
813 static int parse_funce(tuple_t *tuple, cistpl_funce_t *f)
817 if (tuple->TupleDataLen < 1)
819 p = (u_char *)tuple->TupleData;
821 for (i = 1; i < tuple->TupleDataLen; i++)
826 /*====================================================================*/
828 static int parse_config(tuple_t *tuple, cistpl_config_t *config)
833 p = (u_char *)tuple->TupleData;
835 rmsz = (*p & 0x3c) >> 2;
836 if (tuple->TupleDataLen < rasz+rmsz+4)
838 config->last_idx = *(++p);
841 for (i = 0; i <= rasz; i++)
842 config->base += p[i] << (8*i);
844 for (i = 0; i < 4; i++)
845 config->rmask[i] = 0;
846 for (i = 0; i <= rmsz; i++)
847 config->rmask[i>>2] += p[i] << (8*(i%4));
848 config->subtuples = tuple->TupleDataLen - (rasz+rmsz+4);
852 /*======================================================================
854 The following routines are all used to parse the nightmarish
855 config table entries.
857 ======================================================================*/
859 static u_char *parse_power(u_char *p, u_char *q,
865 if (p == q) return NULL;
869 for (i = 0; i < 7; i++)
870 if (pwr->present & (1<<i)) {
871 if (p == q) return NULL;
872 pwr->param[i] = POWER_CVT(*p);
873 scale = POWER_SCALE(*p);
875 if (++p == q) return NULL;
876 if ((*p & 0x7f) < 100)
877 pwr->param[i] += (*p & 0x7f) * scale / 100;
879 pwr->flags |= CISTPL_POWER_HIGHZ_OK;
883 pwr->flags |= CISTPL_POWER_HIGHZ_REQ;
892 /*====================================================================*/
894 static u_char *parse_timing(u_char *p, u_char *q,
895 cistpl_timing_t *timing)
899 if (p == q) return NULL;
901 if ((scale & 3) != 3) {
902 if (++p == q) return NULL;
903 timing->wait = SPEED_CVT(*p);
904 timing->waitscale = exponent[scale & 3];
908 if ((scale & 7) != 7) {
909 if (++p == q) return NULL;
910 timing->ready = SPEED_CVT(*p);
911 timing->rdyscale = exponent[scale & 7];
916 if (++p == q) return NULL;
917 timing->reserved = SPEED_CVT(*p);
918 timing->rsvscale = exponent[scale];
920 timing->reserved = 0;
925 /*====================================================================*/
927 static u_char *parse_io(u_char *p, u_char *q, cistpl_io_t *io)
931 if (p == q) return NULL;
937 io->win[0].len = (1 << (io->flags & CISTPL_IO_LINES_MASK));
941 if (++p == q) return NULL;
942 io->nwin = (*p & 0x0f) + 1;
943 bsz = (*p & 0x30) >> 4;
945 lsz = (*p & 0xc0) >> 6;
949 for (i = 0; i < io->nwin; i++) {
952 for (j = 0; j < bsz; j++, p++) {
953 if (p == q) return NULL;
954 io->win[i].base += *p << (j*8);
956 for (j = 0; j < lsz; j++, p++) {
957 if (p == q) return NULL;
958 io->win[i].len += *p << (j*8);
964 /*====================================================================*/
966 static u_char *parse_mem(u_char *p, u_char *q, cistpl_mem_t *mem)
968 int i, j, asz, lsz, has_ha;
971 if (p == q) return NULL;
973 mem->nwin = (*p & 0x07) + 1;
974 lsz = (*p & 0x18) >> 3;
975 asz = (*p & 0x60) >> 5;
976 has_ha = (*p & 0x80);
977 if (++p == q) return NULL;
979 for (i = 0; i < mem->nwin; i++) {
981 for (j = 0; j < lsz; j++, p++) {
982 if (p == q) return NULL;
985 for (j = 0; j < asz; j++, p++) {
986 if (p == q) return NULL;
990 for (j = 0; j < asz; j++, p++) {
991 if (p == q) return NULL;
994 mem->win[i].len = len << 8;
995 mem->win[i].card_addr = ca << 8;
996 mem->win[i].host_addr = ha << 8;
1001 /*====================================================================*/
1003 static u_char *parse_irq(u_char *p, u_char *q, cistpl_irq_t *irq)
1005 if (p == q) return NULL;
1006 irq->IRQInfo1 = *p; p++;
1007 if (irq->IRQInfo1 & IRQ_INFO2_VALID) {
1008 if (p+2 > q) return NULL;
1009 irq->IRQInfo2 = (p[1]<<8) + p[0];
1015 /*====================================================================*/
1017 static int parse_cftable_entry(tuple_t *tuple,
1018 cistpl_cftable_entry_t *entry)
1020 u_char *p, *q, features;
1022 p = tuple->TupleData;
1023 q = p + tuple->TupleDataLen;
1024 entry->index = *p & 0x3f;
1027 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1029 if (++p == q) return CS_BAD_TUPLE;
1031 entry->flags |= CISTPL_CFTABLE_BVDS;
1033 entry->flags |= CISTPL_CFTABLE_WP;
1035 entry->flags |= CISTPL_CFTABLE_RDYBSY;
1037 entry->flags |= CISTPL_CFTABLE_MWAIT;
1038 entry->interface = *p & 0x0f;
1040 entry->interface = 0;
1042 /* Process optional features */
1043 if (++p == q) return CS_BAD_TUPLE;
1047 if ((features & 3) > 0) {
1048 p = parse_power(p, q, &entry->vcc);
1049 if (p == NULL) return CS_BAD_TUPLE;
1051 entry->vcc.present = 0;
1052 if ((features & 3) > 1) {
1053 p = parse_power(p, q, &entry->vpp1);
1054 if (p == NULL) return CS_BAD_TUPLE;
1056 entry->vpp1.present = 0;
1057 if ((features & 3) > 2) {
1058 p = parse_power(p, q, &entry->vpp2);
1059 if (p == NULL) return CS_BAD_TUPLE;
1061 entry->vpp2.present = 0;
1063 /* Timing options */
1064 if (features & 0x04) {
1065 p = parse_timing(p, q, &entry->timing);
1066 if (p == NULL) return CS_BAD_TUPLE;
1068 entry->timing.wait = 0;
1069 entry->timing.ready = 0;
1070 entry->timing.reserved = 0;
1073 /* I/O window options */
1074 if (features & 0x08) {
1075 p = parse_io(p, q, &entry->io);
1076 if (p == NULL) return CS_BAD_TUPLE;
1080 /* Interrupt options */
1081 if (features & 0x10) {
1082 p = parse_irq(p, q, &entry->irq);
1083 if (p == NULL) return CS_BAD_TUPLE;
1085 entry->irq.IRQInfo1 = 0;
1087 switch (features & 0x60) {
1089 entry->mem.nwin = 0;
1092 entry->mem.nwin = 1;
1093 entry->mem.win[0].len = get_unaligned_le16(p) << 8;
1094 entry->mem.win[0].card_addr = 0;
1095 entry->mem.win[0].host_addr = 0;
1097 if (p > q) return CS_BAD_TUPLE;
1100 entry->mem.nwin = 1;
1101 entry->mem.win[0].len = get_unaligned_le16(p) << 8;
1102 entry->mem.win[0].card_addr = get_unaligned_le16(p + 2) << 8;
1103 entry->mem.win[0].host_addr = 0;
1105 if (p > q) return CS_BAD_TUPLE;
1108 p = parse_mem(p, q, &entry->mem);
1109 if (p == NULL) return CS_BAD_TUPLE;
1114 if (features & 0x80) {
1115 if (p == q) return CS_BAD_TUPLE;
1116 entry->flags |= (*p << 8);
1118 if (++p == q) return CS_BAD_TUPLE;
1122 entry->subtuples = q-p;
1127 /*====================================================================*/
1129 #ifdef CONFIG_CARDBUS
1131 static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar)
1134 if (tuple->TupleDataLen < 6)
1135 return CS_BAD_TUPLE;
1136 p = (u_char *)tuple->TupleData;
1139 bar->size = get_unaligned_le32(p);
1143 static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config)
1147 p = (u_char *)tuple->TupleData;
1148 if ((*p != 3) || (tuple->TupleDataLen < 6))
1149 return CS_BAD_TUPLE;
1150 config->last_idx = *(++p);
1152 config->base = get_unaligned_le32(p);
1153 config->subtuples = tuple->TupleDataLen - 6;
1157 static int parse_cftable_entry_cb(tuple_t *tuple,
1158 cistpl_cftable_entry_cb_t *entry)
1160 u_char *p, *q, features;
1162 p = tuple->TupleData;
1163 q = p + tuple->TupleDataLen;
1164 entry->index = *p & 0x3f;
1167 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1169 /* Process optional features */
1170 if (++p == q) return CS_BAD_TUPLE;
1174 if ((features & 3) > 0) {
1175 p = parse_power(p, q, &entry->vcc);
1176 if (p == NULL) return CS_BAD_TUPLE;
1178 entry->vcc.present = 0;
1179 if ((features & 3) > 1) {
1180 p = parse_power(p, q, &entry->vpp1);
1181 if (p == NULL) return CS_BAD_TUPLE;
1183 entry->vpp1.present = 0;
1184 if ((features & 3) > 2) {
1185 p = parse_power(p, q, &entry->vpp2);
1186 if (p == NULL) return CS_BAD_TUPLE;
1188 entry->vpp2.present = 0;
1190 /* I/O window options */
1191 if (features & 0x08) {
1192 if (p == q) return CS_BAD_TUPLE;
1193 entry->io = *p; p++;
1197 /* Interrupt options */
1198 if (features & 0x10) {
1199 p = parse_irq(p, q, &entry->irq);
1200 if (p == NULL) return CS_BAD_TUPLE;
1202 entry->irq.IRQInfo1 = 0;
1204 if (features & 0x20) {
1205 if (p == q) return CS_BAD_TUPLE;
1206 entry->mem = *p; p++;
1211 if (features & 0x80) {
1212 if (p == q) return CS_BAD_TUPLE;
1213 entry->flags |= (*p << 8);
1215 if (++p == q) return CS_BAD_TUPLE;
1216 entry->flags |= (*p << 16);
1219 if (++p == q) return CS_BAD_TUPLE;
1223 entry->subtuples = q-p;
1230 /*====================================================================*/
1232 static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo)
1237 p = (u_char *)tuple->TupleData;
1238 q = p + tuple->TupleDataLen;
1240 for (n = 0; n < CISTPL_MAX_DEVICES; n++) {
1242 geo->geo[n].buswidth = p[0];
1243 geo->geo[n].erase_block = 1 << (p[1]-1);
1244 geo->geo[n].read_block = 1 << (p[2]-1);
1245 geo->geo[n].write_block = 1 << (p[3]-1);
1246 geo->geo[n].partition = 1 << (p[4]-1);
1247 geo->geo[n].interleave = 1 << (p[5]-1);
1254 /*====================================================================*/
1256 static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2)
1260 if (tuple->TupleDataLen < 10)
1261 return CS_BAD_TUPLE;
1263 p = tuple->TupleData;
1264 q = p + tuple->TupleDataLen;
1268 v2->dindex = get_unaligned_le16(p +2 );
1273 return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL);
1276 /*====================================================================*/
1278 static int parse_org(tuple_t *tuple, cistpl_org_t *org)
1283 p = tuple->TupleData;
1284 q = p + tuple->TupleDataLen;
1285 if (p == q) return CS_BAD_TUPLE;
1287 if (++p == q) return CS_BAD_TUPLE;
1288 for (i = 0; i < 30; i++) {
1290 if (*p == '\0') break;
1291 if (++p == q) return CS_BAD_TUPLE;
1296 /*====================================================================*/
1298 static int parse_format(tuple_t *tuple, cistpl_format_t *fmt)
1302 if (tuple->TupleDataLen < 10)
1303 return CS_BAD_TUPLE;
1305 p = tuple->TupleData;
1309 fmt->offset = get_unaligned_le32(p + 2);
1310 fmt->length = get_unaligned_le32(p + 6);
1315 /*====================================================================*/
1317 int pccard_parse_tuple(tuple_t *tuple, cisparse_t *parse)
1319 int ret = CS_SUCCESS;
1321 if (tuple->TupleDataLen > tuple->TupleDataMax)
1322 return CS_BAD_TUPLE;
1323 switch (tuple->TupleCode) {
1325 case CISTPL_DEVICE_A:
1326 ret = parse_device(tuple, &parse->device);
1328 #ifdef CONFIG_CARDBUS
1330 ret = parse_bar(tuple, &parse->bar);
1332 case CISTPL_CONFIG_CB:
1333 ret = parse_config_cb(tuple, &parse->config);
1335 case CISTPL_CFTABLE_ENTRY_CB:
1336 ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb);
1339 case CISTPL_CHECKSUM:
1340 ret = parse_checksum(tuple, &parse->checksum);
1342 case CISTPL_LONGLINK_A:
1343 case CISTPL_LONGLINK_C:
1344 ret = parse_longlink(tuple, &parse->longlink);
1346 case CISTPL_LONGLINK_MFC:
1347 ret = parse_longlink_mfc(tuple, &parse->longlink_mfc);
1350 ret = parse_vers_1(tuple, &parse->version_1);
1353 ret = parse_altstr(tuple, &parse->altstr);
1355 case CISTPL_JEDEC_A:
1356 case CISTPL_JEDEC_C:
1357 ret = parse_jedec(tuple, &parse->jedec);
1360 ret = parse_manfid(tuple, &parse->manfid);
1363 ret = parse_funcid(tuple, &parse->funcid);
1366 ret = parse_funce(tuple, &parse->funce);
1369 ret = parse_config(tuple, &parse->config);
1371 case CISTPL_CFTABLE_ENTRY:
1372 ret = parse_cftable_entry(tuple, &parse->cftable_entry);
1374 case CISTPL_DEVICE_GEO:
1375 case CISTPL_DEVICE_GEO_A:
1376 ret = parse_device_geo(tuple, &parse->device_geo);
1379 ret = parse_vers_2(tuple, &parse->vers_2);
1382 ret = parse_org(tuple, &parse->org);
1385 case CISTPL_FORMAT_A:
1386 ret = parse_format(tuple, &parse->format);
1388 case CISTPL_NO_LINK:
1389 case CISTPL_LINKTARGET:
1393 ret = CS_UNSUPPORTED_FUNCTION;
1398 EXPORT_SYMBOL(pccard_parse_tuple);
1400 /*======================================================================
1402 This is used internally by Card Services to look up CIS stuff.
1404 ======================================================================*/
1406 int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse)
1412 buf = kmalloc(256, GFP_KERNEL);
1414 return CS_OUT_OF_RESOURCE;
1415 tuple.DesiredTuple = code;
1416 tuple.Attributes = TUPLE_RETURN_COMMON;
1417 ret = pccard_get_first_tuple(s, function, &tuple);
1418 if (ret != CS_SUCCESS) goto done;
1419 tuple.TupleData = buf;
1420 tuple.TupleOffset = 0;
1421 tuple.TupleDataMax = 255;
1422 ret = pccard_get_tuple_data(s, &tuple);
1423 if (ret != CS_SUCCESS) goto done;
1424 ret = pccard_parse_tuple(&tuple, parse);
1429 EXPORT_SYMBOL(pccard_read_tuple);
1431 /*======================================================================
1433 This tries to determine if a card has a sensible CIS. It returns
1434 the number of tuples in the CIS, or 0 if the CIS looks bad. The
1435 checks include making sure several critical tuples are present and
1436 valid; seeing if the total number of tuples is reasonable; and
1437 looking for tuples that use reserved codes.
1439 ======================================================================*/
1441 int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, unsigned int *info)
1445 unsigned int count = 0;
1446 int ret, reserved, dev_ok = 0, ident_ok = 0;
1449 return CS_BAD_HANDLE;
1451 tuple = kmalloc(sizeof(*tuple), GFP_KERNEL);
1453 return CS_OUT_OF_RESOURCE;
1454 p = kmalloc(sizeof(*p), GFP_KERNEL);
1457 return CS_OUT_OF_RESOURCE;
1460 count = reserved = 0;
1461 tuple->DesiredTuple = RETURN_FIRST_TUPLE;
1462 tuple->Attributes = TUPLE_RETURN_COMMON;
1463 ret = pccard_get_first_tuple(s, function, tuple);
1464 if (ret != CS_SUCCESS)
1467 /* First tuple should be DEVICE; we should really have either that
1468 or a CFTABLE_ENTRY of some sort */
1469 if ((tuple->TupleCode == CISTPL_DEVICE) ||
1470 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY, p) == CS_SUCCESS) ||
1471 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY_CB, p) == CS_SUCCESS))
1474 /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
1475 tuple, for card identification. Certain old D-Link and Linksys
1476 cards have only a broken VERS_2 tuple; hence the bogus test. */
1477 if ((pccard_read_tuple(s, function, CISTPL_MANFID, p) == CS_SUCCESS) ||
1478 (pccard_read_tuple(s, function, CISTPL_VERS_1, p) == CS_SUCCESS) ||
1479 (pccard_read_tuple(s, function, CISTPL_VERS_2, p) != CS_NO_MORE_ITEMS))
1482 if (!dev_ok && !ident_ok)
1485 for (count = 1; count < MAX_TUPLES; count++) {
1486 ret = pccard_get_next_tuple(s, function, tuple);
1487 if (ret != CS_SUCCESS) break;
1488 if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) ||
1489 ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) ||
1490 ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff)))
1493 if ((count == MAX_TUPLES) || (reserved > 5) ||
1494 ((!dev_ok || !ident_ok) && (count > 10)))
1504 EXPORT_SYMBOL(pccard_validate_cis);