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/bulkmem.h>
34 #include <pcmcia/cisreg.h>
35 #include <pcmcia/cistpl.h>
36 #include "cs_internal.h"
38 static const u_char mantissa[] = {
39 10, 12, 13, 15, 20, 25, 30, 35,
40 40, 45, 50, 55, 60, 70, 80, 90
43 static const u_int exponent[] = {
44 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
47 /* Convert an extended speed byte to a time in nanoseconds */
48 #define SPEED_CVT(v) \
49 (mantissa[(((v)>>3)&15)-1] * exponent[(v)&7] / 10)
50 /* Convert a power byte to a current in 0.1 microamps */
51 #define POWER_CVT(v) \
52 (mantissa[((v)>>3)&15] * exponent[(v)&7] / 10)
53 #define POWER_SCALE(v) (exponent[(v)&7])
55 /* Upper limit on reasonable # of tuples */
56 #define MAX_TUPLES 200
58 /*====================================================================*/
60 /* Parameters that can be set with 'insmod' */
64 module_param(cis_width, int, 0444);
66 void release_cis_mem(struct pcmcia_socket *s)
68 if (s->cis_mem.flags & MAP_ACTIVE) {
69 s->cis_mem.flags &= ~MAP_ACTIVE;
70 s->ops->set_mem_map(s, &s->cis_mem);
72 release_resource(s->cis_mem.res);
73 kfree(s->cis_mem.res);
74 s->cis_mem.res = NULL;
80 EXPORT_SYMBOL(release_cis_mem);
83 * Map the card memory at "card_offset" into virtual space.
84 * If flags & MAP_ATTRIB, map the attribute space, otherwise
85 * map the memory space.
88 set_cis_map(struct pcmcia_socket *s, 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, s->map_size, 0, s);
95 if (mem->res == NULL) {
96 printk(KERN_NOTICE "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 u_int 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);
356 list_for_each_entry(cis, &s->cis_cache, node) {
361 #ifdef CONFIG_CARDBUS
362 if (s->state & SOCKET_CARDBUS)
363 read_cb_mem(s, cis->attr, cis->addr, len, buf);
366 pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf);
368 if (memcmp(buf, cis->cache, len) != 0) {
377 /*======================================================================
379 For really bad cards, we provide a facility for uploading a
382 ======================================================================*/
384 int pcmcia_replace_cis(struct pcmcia_socket *s, cisdump_t *cis)
388 if (cis->Length > CISTPL_MAX_CIS_SIZE)
390 s->fake_cis = kmalloc(cis->Length, GFP_KERNEL);
391 if (s->fake_cis == NULL)
392 return CS_OUT_OF_RESOURCE;
393 s->fake_cis_len = cis->Length;
394 memcpy(s->fake_cis, cis->Data, cis->Length);
397 EXPORT_SYMBOL(pcmcia_replace_cis);
399 /*======================================================================
401 The high-level CIS tuple services
403 ======================================================================*/
405 typedef struct tuple_flags {
412 #define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space)
413 #define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link)
414 #define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn)
415 #define SPACE(f) (((tuple_flags *)(&(f)))->space)
417 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int func, tuple_t *tuple);
419 int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
422 return CS_BAD_HANDLE;
423 if (!(s->state & SOCKET_PRESENT))
425 tuple->TupleLink = tuple->Flags = 0;
426 #ifdef CONFIG_CARDBUS
427 if (s->state & SOCKET_CARDBUS) {
428 struct pci_dev *dev = s->cb_dev;
430 pci_bus_read_config_dword(dev->subordinate, 0, PCI_CARDBUS_CIS, &ptr);
431 tuple->CISOffset = ptr & ~7;
432 SPACE(tuple->Flags) = (ptr & 7);
436 /* Assume presence of a LONGLINK_C to address 0 */
437 tuple->CISOffset = tuple->LinkOffset = 0;
438 SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
440 if (!(s->state & SOCKET_CARDBUS) && (s->functions > 1) &&
441 !(tuple->Attributes & TUPLE_RETURN_COMMON)) {
442 cisdata_t req = tuple->DesiredTuple;
443 tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
444 if (pccard_get_next_tuple(s, function, tuple) == CS_SUCCESS) {
445 tuple->DesiredTuple = CISTPL_LINKTARGET;
446 if (pccard_get_next_tuple(s, function, tuple) != CS_SUCCESS)
447 return CS_NO_MORE_ITEMS;
449 tuple->CISOffset = tuple->TupleLink = 0;
450 tuple->DesiredTuple = req;
452 return pccard_get_next_tuple(s, function, tuple);
454 EXPORT_SYMBOL(pccard_get_first_tuple);
456 static int follow_link(struct pcmcia_socket *s, tuple_t *tuple)
461 if (MFC_FN(tuple->Flags)) {
462 /* Get indirect link from the MFC tuple */
463 read_cis_cache(s, LINK_SPACE(tuple->Flags),
464 tuple->LinkOffset, 5, link);
465 ofs = get_unaligned_le32(link + 1);
466 SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR);
467 /* Move to the next indirect link */
468 tuple->LinkOffset += 5;
469 MFC_FN(tuple->Flags)--;
470 } else if (HAS_LINK(tuple->Flags)) {
471 ofs = tuple->LinkOffset;
472 SPACE(tuple->Flags) = LINK_SPACE(tuple->Flags);
473 HAS_LINK(tuple->Flags) = 0;
477 if (!(s->state & SOCKET_CARDBUS) && SPACE(tuple->Flags)) {
478 /* This is ugly, but a common CIS error is to code the long
479 link offset incorrectly, so we check the right spot... */
480 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
481 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
482 (strncmp(link+2, "CIS", 3) == 0))
484 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
485 /* Then, we try the wrong spot... */
488 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
489 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
490 (strncmp(link+2, "CIS", 3) == 0))
492 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
496 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
502 return CS_BAD_HANDLE;
503 if (!(s->state & SOCKET_PRESENT))
506 link[1] = tuple->TupleLink;
507 ofs = tuple->CISOffset + tuple->TupleLink;
508 attr = SPACE(tuple->Flags);
510 for (i = 0; i < MAX_TUPLES; i++) {
511 if (link[1] == 0xff) {
512 link[0] = CISTPL_END;
514 read_cis_cache(s, attr, ofs, 2, link);
515 if (link[0] == CISTPL_NULL) {
520 /* End of chain? Follow long link if possible */
521 if (link[0] == CISTPL_END) {
522 if ((ofs = follow_link(s, tuple)) < 0)
523 return CS_NO_MORE_ITEMS;
524 attr = SPACE(tuple->Flags);
525 read_cis_cache(s, attr, ofs, 2, link);
528 /* Is this a link tuple? Make a note of it */
529 if ((link[0] == CISTPL_LONGLINK_A) ||
530 (link[0] == CISTPL_LONGLINK_C) ||
531 (link[0] == CISTPL_LONGLINK_MFC) ||
532 (link[0] == CISTPL_LINKTARGET) ||
533 (link[0] == CISTPL_INDIRECT) ||
534 (link[0] == CISTPL_NO_LINK)) {
536 case CISTPL_LONGLINK_A:
537 HAS_LINK(tuple->Flags) = 1;
538 LINK_SPACE(tuple->Flags) = attr | IS_ATTR;
539 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
541 case CISTPL_LONGLINK_C:
542 HAS_LINK(tuple->Flags) = 1;
543 LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR;
544 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
546 case CISTPL_INDIRECT:
547 HAS_LINK(tuple->Flags) = 1;
548 LINK_SPACE(tuple->Flags) = IS_ATTR | IS_INDIRECT;
549 tuple->LinkOffset = 0;
551 case CISTPL_LONGLINK_MFC:
552 tuple->LinkOffset = ofs + 3;
553 LINK_SPACE(tuple->Flags) = attr;
554 if (function == BIND_FN_ALL) {
555 /* Follow all the MFC links */
556 read_cis_cache(s, attr, ofs+2, 1, &tmp);
557 MFC_FN(tuple->Flags) = tmp;
559 /* Follow exactly one of the links */
560 MFC_FN(tuple->Flags) = 1;
561 tuple->LinkOffset += function * 5;
565 HAS_LINK(tuple->Flags) = 0;
568 if ((tuple->Attributes & TUPLE_RETURN_LINK) &&
569 (tuple->DesiredTuple == RETURN_FIRST_TUPLE))
572 if (tuple->DesiredTuple == RETURN_FIRST_TUPLE)
575 if (link[0] == tuple->DesiredTuple)
579 if (i == MAX_TUPLES) {
580 cs_dbg(s, 1, "cs: overrun in pcmcia_get_next_tuple\n");
581 return CS_NO_MORE_ITEMS;
584 tuple->TupleCode = link[0];
585 tuple->TupleLink = link[1];
586 tuple->CISOffset = ofs + 2;
589 EXPORT_SYMBOL(pccard_get_next_tuple);
591 /*====================================================================*/
593 #define _MIN(a, b) (((a) < (b)) ? (a) : (b))
595 int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple)
600 return CS_BAD_HANDLE;
602 if (tuple->TupleLink < tuple->TupleOffset)
603 return CS_NO_MORE_ITEMS;
604 len = tuple->TupleLink - tuple->TupleOffset;
605 tuple->TupleDataLen = tuple->TupleLink;
608 read_cis_cache(s, SPACE(tuple->Flags),
609 tuple->CISOffset + tuple->TupleOffset,
610 _MIN(len, tuple->TupleDataMax), tuple->TupleData);
613 EXPORT_SYMBOL(pccard_get_tuple_data);
616 /*======================================================================
618 Parsing routines for individual tuples
620 ======================================================================*/
622 static int parse_device(tuple_t *tuple, cistpl_device_t *device)
628 p = (u_char *)tuple->TupleData;
629 q = p + tuple->TupleDataLen;
632 for (i = 0; i < CISTPL_MAX_DEVICES; i++) {
634 if (*p == 0xff) break;
635 device->dev[i].type = (*p >> 4);
636 device->dev[i].wp = (*p & 0x08) ? 1 : 0;
638 case 0: device->dev[i].speed = 0; break;
639 case 1: device->dev[i].speed = 250; break;
640 case 2: device->dev[i].speed = 200; break;
641 case 3: device->dev[i].speed = 150; break;
642 case 4: device->dev[i].speed = 100; break;
644 if (++p == q) return CS_BAD_TUPLE;
645 device->dev[i].speed = SPEED_CVT(*p);
647 if (++p == q) return CS_BAD_TUPLE;
653 if (++p == q) return CS_BAD_TUPLE;
654 if (*p == 0xff) break;
656 if (scale == 7) return CS_BAD_TUPLE;
657 device->dev[i].size = ((*p >> 3) + 1) * (512 << (scale*2));
665 /*====================================================================*/
667 static int parse_checksum(tuple_t *tuple, cistpl_checksum_t *csum)
670 if (tuple->TupleDataLen < 5)
672 p = (u_char *) tuple->TupleData;
673 csum->addr = tuple->CISOffset + get_unaligned_le16(p) - 2;
674 csum->len = get_unaligned_le16(p + 2);
675 csum->sum = *(p + 4);
679 /*====================================================================*/
681 static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link)
683 if (tuple->TupleDataLen < 4)
685 link->addr = get_unaligned_le32(tuple->TupleData);
689 /*====================================================================*/
691 static int parse_longlink_mfc(tuple_t *tuple,
692 cistpl_longlink_mfc_t *link)
697 p = (u_char *)tuple->TupleData;
700 if (tuple->TupleDataLen <= link->nfn*5)
702 for (i = 0; i < link->nfn; i++) {
703 link->fn[i].space = *p; p++;
704 link->fn[i].addr = get_unaligned_le32(p);
710 /*====================================================================*/
712 static int parse_strings(u_char *p, u_char *q, int max,
713 char *s, u_char *ofs, u_char *found)
717 if (p == q) return CS_BAD_TUPLE;
719 for (i = 0; i < max; i++) {
720 if (*p == 0xff) break;
724 s[j++] = (*p == 0xff) ? '\0' : *p;
725 if ((*p == '\0') || (*p == 0xff)) break;
726 if (++p == q) return CS_BAD_TUPLE;
728 if ((*p == 0xff) || (++p == q)) break;
734 return (ns == max) ? CS_SUCCESS : CS_BAD_TUPLE;
738 /*====================================================================*/
740 static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1)
744 p = (u_char *)tuple->TupleData;
745 q = p + tuple->TupleDataLen;
747 vers_1->major = *p; p++;
748 vers_1->minor = *p; p++;
749 if (p >= q) return CS_BAD_TUPLE;
751 return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS,
752 vers_1->str, vers_1->ofs, &vers_1->ns);
755 /*====================================================================*/
757 static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr)
761 p = (u_char *)tuple->TupleData;
762 q = p + tuple->TupleDataLen;
764 return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS,
765 altstr->str, altstr->ofs, &altstr->ns);
768 /*====================================================================*/
770 static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec)
775 p = (u_char *)tuple->TupleData;
776 q = p + tuple->TupleDataLen;
778 for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) {
780 jedec->id[nid].mfr = p[0];
781 jedec->id[nid].info = p[1];
788 /*====================================================================*/
790 static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m)
792 if (tuple->TupleDataLen < 4)
794 m->manf = get_unaligned_le16(tuple->TupleData);
795 m->card = get_unaligned_le16(tuple->TupleData + 2);
799 /*====================================================================*/
801 static int parse_funcid(tuple_t *tuple, cistpl_funcid_t *f)
804 if (tuple->TupleDataLen < 2)
806 p = (u_char *)tuple->TupleData;
812 /*====================================================================*/
814 static int parse_funce(tuple_t *tuple, cistpl_funce_t *f)
818 if (tuple->TupleDataLen < 1)
820 p = (u_char *)tuple->TupleData;
822 for (i = 1; i < tuple->TupleDataLen; i++)
827 /*====================================================================*/
829 static int parse_config(tuple_t *tuple, cistpl_config_t *config)
834 p = (u_char *)tuple->TupleData;
836 rmsz = (*p & 0x3c) >> 2;
837 if (tuple->TupleDataLen < rasz+rmsz+4)
839 config->last_idx = *(++p);
842 for (i = 0; i <= rasz; i++)
843 config->base += p[i] << (8*i);
845 for (i = 0; i < 4; i++)
846 config->rmask[i] = 0;
847 for (i = 0; i <= rmsz; i++)
848 config->rmask[i>>2] += p[i] << (8*(i%4));
849 config->subtuples = tuple->TupleDataLen - (rasz+rmsz+4);
853 /*======================================================================
855 The following routines are all used to parse the nightmarish
856 config table entries.
858 ======================================================================*/
860 static u_char *parse_power(u_char *p, u_char *q,
866 if (p == q) return NULL;
870 for (i = 0; i < 7; i++)
871 if (pwr->present & (1<<i)) {
872 if (p == q) return NULL;
873 pwr->param[i] = POWER_CVT(*p);
874 scale = POWER_SCALE(*p);
876 if (++p == q) return NULL;
877 if ((*p & 0x7f) < 100)
878 pwr->param[i] += (*p & 0x7f) * scale / 100;
880 pwr->flags |= CISTPL_POWER_HIGHZ_OK;
884 pwr->flags |= CISTPL_POWER_HIGHZ_REQ;
893 /*====================================================================*/
895 static u_char *parse_timing(u_char *p, u_char *q,
896 cistpl_timing_t *timing)
900 if (p == q) return NULL;
902 if ((scale & 3) != 3) {
903 if (++p == q) return NULL;
904 timing->wait = SPEED_CVT(*p);
905 timing->waitscale = exponent[scale & 3];
909 if ((scale & 7) != 7) {
910 if (++p == q) return NULL;
911 timing->ready = SPEED_CVT(*p);
912 timing->rdyscale = exponent[scale & 7];
917 if (++p == q) return NULL;
918 timing->reserved = SPEED_CVT(*p);
919 timing->rsvscale = exponent[scale];
921 timing->reserved = 0;
926 /*====================================================================*/
928 static u_char *parse_io(u_char *p, u_char *q, cistpl_io_t *io)
932 if (p == q) return NULL;
938 io->win[0].len = (1 << (io->flags & CISTPL_IO_LINES_MASK));
942 if (++p == q) return NULL;
943 io->nwin = (*p & 0x0f) + 1;
944 bsz = (*p & 0x30) >> 4;
946 lsz = (*p & 0xc0) >> 6;
950 for (i = 0; i < io->nwin; i++) {
953 for (j = 0; j < bsz; j++, p++) {
954 if (p == q) return NULL;
955 io->win[i].base += *p << (j*8);
957 for (j = 0; j < lsz; j++, p++) {
958 if (p == q) return NULL;
959 io->win[i].len += *p << (j*8);
965 /*====================================================================*/
967 static u_char *parse_mem(u_char *p, u_char *q, cistpl_mem_t *mem)
969 int i, j, asz, lsz, has_ha;
972 if (p == q) return NULL;
974 mem->nwin = (*p & 0x07) + 1;
975 lsz = (*p & 0x18) >> 3;
976 asz = (*p & 0x60) >> 5;
977 has_ha = (*p & 0x80);
978 if (++p == q) return NULL;
980 for (i = 0; i < mem->nwin; i++) {
982 for (j = 0; j < lsz; j++, p++) {
983 if (p == q) return NULL;
986 for (j = 0; j < asz; j++, p++) {
987 if (p == q) return NULL;
991 for (j = 0; j < asz; j++, p++) {
992 if (p == q) return NULL;
995 mem->win[i].len = len << 8;
996 mem->win[i].card_addr = ca << 8;
997 mem->win[i].host_addr = ha << 8;
1002 /*====================================================================*/
1004 static u_char *parse_irq(u_char *p, u_char *q, cistpl_irq_t *irq)
1006 if (p == q) return NULL;
1007 irq->IRQInfo1 = *p; p++;
1008 if (irq->IRQInfo1 & IRQ_INFO2_VALID) {
1009 if (p+2 > q) return NULL;
1010 irq->IRQInfo2 = (p[1]<<8) + p[0];
1016 /*====================================================================*/
1018 static int parse_cftable_entry(tuple_t *tuple,
1019 cistpl_cftable_entry_t *entry)
1021 u_char *p, *q, features;
1023 p = tuple->TupleData;
1024 q = p + tuple->TupleDataLen;
1025 entry->index = *p & 0x3f;
1028 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1030 if (++p == q) return CS_BAD_TUPLE;
1032 entry->flags |= CISTPL_CFTABLE_BVDS;
1034 entry->flags |= CISTPL_CFTABLE_WP;
1036 entry->flags |= CISTPL_CFTABLE_RDYBSY;
1038 entry->flags |= CISTPL_CFTABLE_MWAIT;
1039 entry->interface = *p & 0x0f;
1041 entry->interface = 0;
1043 /* Process optional features */
1044 if (++p == q) return CS_BAD_TUPLE;
1048 if ((features & 3) > 0) {
1049 p = parse_power(p, q, &entry->vcc);
1050 if (p == NULL) return CS_BAD_TUPLE;
1052 entry->vcc.present = 0;
1053 if ((features & 3) > 1) {
1054 p = parse_power(p, q, &entry->vpp1);
1055 if (p == NULL) return CS_BAD_TUPLE;
1057 entry->vpp1.present = 0;
1058 if ((features & 3) > 2) {
1059 p = parse_power(p, q, &entry->vpp2);
1060 if (p == NULL) return CS_BAD_TUPLE;
1062 entry->vpp2.present = 0;
1064 /* Timing options */
1065 if (features & 0x04) {
1066 p = parse_timing(p, q, &entry->timing);
1067 if (p == NULL) return CS_BAD_TUPLE;
1069 entry->timing.wait = 0;
1070 entry->timing.ready = 0;
1071 entry->timing.reserved = 0;
1074 /* I/O window options */
1075 if (features & 0x08) {
1076 p = parse_io(p, q, &entry->io);
1077 if (p == NULL) return CS_BAD_TUPLE;
1081 /* Interrupt options */
1082 if (features & 0x10) {
1083 p = parse_irq(p, q, &entry->irq);
1084 if (p == NULL) return CS_BAD_TUPLE;
1086 entry->irq.IRQInfo1 = 0;
1088 switch (features & 0x60) {
1090 entry->mem.nwin = 0;
1093 entry->mem.nwin = 1;
1094 entry->mem.win[0].len = get_unaligned_le16(p) << 8;
1095 entry->mem.win[0].card_addr = 0;
1096 entry->mem.win[0].host_addr = 0;
1098 if (p > q) return CS_BAD_TUPLE;
1101 entry->mem.nwin = 1;
1102 entry->mem.win[0].len = get_unaligned_le16(p) << 8;
1103 entry->mem.win[0].card_addr = get_unaligned_le16(p + 2) << 8;
1104 entry->mem.win[0].host_addr = 0;
1106 if (p > q) return CS_BAD_TUPLE;
1109 p = parse_mem(p, q, &entry->mem);
1110 if (p == NULL) return CS_BAD_TUPLE;
1115 if (features & 0x80) {
1116 if (p == q) return CS_BAD_TUPLE;
1117 entry->flags |= (*p << 8);
1119 if (++p == q) return CS_BAD_TUPLE;
1123 entry->subtuples = q-p;
1128 /*====================================================================*/
1130 #ifdef CONFIG_CARDBUS
1132 static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar)
1135 if (tuple->TupleDataLen < 6)
1136 return CS_BAD_TUPLE;
1137 p = (u_char *)tuple->TupleData;
1140 bar->size = get_unaligned_le32(p);
1144 static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config)
1148 p = (u_char *)tuple->TupleData;
1149 if ((*p != 3) || (tuple->TupleDataLen < 6))
1150 return CS_BAD_TUPLE;
1151 config->last_idx = *(++p);
1153 config->base = get_unaligned_le32(p);
1154 config->subtuples = tuple->TupleDataLen - 6;
1158 static int parse_cftable_entry_cb(tuple_t *tuple,
1159 cistpl_cftable_entry_cb_t *entry)
1161 u_char *p, *q, features;
1163 p = tuple->TupleData;
1164 q = p + tuple->TupleDataLen;
1165 entry->index = *p & 0x3f;
1168 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1170 /* Process optional features */
1171 if (++p == q) return CS_BAD_TUPLE;
1175 if ((features & 3) > 0) {
1176 p = parse_power(p, q, &entry->vcc);
1177 if (p == NULL) return CS_BAD_TUPLE;
1179 entry->vcc.present = 0;
1180 if ((features & 3) > 1) {
1181 p = parse_power(p, q, &entry->vpp1);
1182 if (p == NULL) return CS_BAD_TUPLE;
1184 entry->vpp1.present = 0;
1185 if ((features & 3) > 2) {
1186 p = parse_power(p, q, &entry->vpp2);
1187 if (p == NULL) return CS_BAD_TUPLE;
1189 entry->vpp2.present = 0;
1191 /* I/O window options */
1192 if (features & 0x08) {
1193 if (p == q) return CS_BAD_TUPLE;
1194 entry->io = *p; p++;
1198 /* Interrupt options */
1199 if (features & 0x10) {
1200 p = parse_irq(p, q, &entry->irq);
1201 if (p == NULL) return CS_BAD_TUPLE;
1203 entry->irq.IRQInfo1 = 0;
1205 if (features & 0x20) {
1206 if (p == q) return CS_BAD_TUPLE;
1207 entry->mem = *p; p++;
1212 if (features & 0x80) {
1213 if (p == q) return CS_BAD_TUPLE;
1214 entry->flags |= (*p << 8);
1216 if (++p == q) return CS_BAD_TUPLE;
1217 entry->flags |= (*p << 16);
1220 if (++p == q) return CS_BAD_TUPLE;
1224 entry->subtuples = q-p;
1231 /*====================================================================*/
1233 static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo)
1238 p = (u_char *)tuple->TupleData;
1239 q = p + tuple->TupleDataLen;
1241 for (n = 0; n < CISTPL_MAX_DEVICES; n++) {
1243 geo->geo[n].buswidth = p[0];
1244 geo->geo[n].erase_block = 1 << (p[1]-1);
1245 geo->geo[n].read_block = 1 << (p[2]-1);
1246 geo->geo[n].write_block = 1 << (p[3]-1);
1247 geo->geo[n].partition = 1 << (p[4]-1);
1248 geo->geo[n].interleave = 1 << (p[5]-1);
1255 /*====================================================================*/
1257 static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2)
1261 if (tuple->TupleDataLen < 10)
1262 return CS_BAD_TUPLE;
1264 p = tuple->TupleData;
1265 q = p + tuple->TupleDataLen;
1269 v2->dindex = get_unaligned_le16(p +2 );
1274 return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL);
1277 /*====================================================================*/
1279 static int parse_org(tuple_t *tuple, cistpl_org_t *org)
1284 p = tuple->TupleData;
1285 q = p + tuple->TupleDataLen;
1286 if (p == q) return CS_BAD_TUPLE;
1288 if (++p == q) return CS_BAD_TUPLE;
1289 for (i = 0; i < 30; i++) {
1291 if (*p == '\0') break;
1292 if (++p == q) return CS_BAD_TUPLE;
1297 /*====================================================================*/
1299 static int parse_format(tuple_t *tuple, cistpl_format_t *fmt)
1303 if (tuple->TupleDataLen < 10)
1304 return CS_BAD_TUPLE;
1306 p = tuple->TupleData;
1310 fmt->offset = get_unaligned_le32(p + 2);
1311 fmt->length = get_unaligned_le32(p + 6);
1316 /*====================================================================*/
1318 int pccard_parse_tuple(tuple_t *tuple, cisparse_t *parse)
1320 int ret = CS_SUCCESS;
1322 if (tuple->TupleDataLen > tuple->TupleDataMax)
1323 return CS_BAD_TUPLE;
1324 switch (tuple->TupleCode) {
1326 case CISTPL_DEVICE_A:
1327 ret = parse_device(tuple, &parse->device);
1329 #ifdef CONFIG_CARDBUS
1331 ret = parse_bar(tuple, &parse->bar);
1333 case CISTPL_CONFIG_CB:
1334 ret = parse_config_cb(tuple, &parse->config);
1336 case CISTPL_CFTABLE_ENTRY_CB:
1337 ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb);
1340 case CISTPL_CHECKSUM:
1341 ret = parse_checksum(tuple, &parse->checksum);
1343 case CISTPL_LONGLINK_A:
1344 case CISTPL_LONGLINK_C:
1345 ret = parse_longlink(tuple, &parse->longlink);
1347 case CISTPL_LONGLINK_MFC:
1348 ret = parse_longlink_mfc(tuple, &parse->longlink_mfc);
1351 ret = parse_vers_1(tuple, &parse->version_1);
1354 ret = parse_altstr(tuple, &parse->altstr);
1356 case CISTPL_JEDEC_A:
1357 case CISTPL_JEDEC_C:
1358 ret = parse_jedec(tuple, &parse->jedec);
1361 ret = parse_manfid(tuple, &parse->manfid);
1364 ret = parse_funcid(tuple, &parse->funcid);
1367 ret = parse_funce(tuple, &parse->funce);
1370 ret = parse_config(tuple, &parse->config);
1372 case CISTPL_CFTABLE_ENTRY:
1373 ret = parse_cftable_entry(tuple, &parse->cftable_entry);
1375 case CISTPL_DEVICE_GEO:
1376 case CISTPL_DEVICE_GEO_A:
1377 ret = parse_device_geo(tuple, &parse->device_geo);
1380 ret = parse_vers_2(tuple, &parse->vers_2);
1383 ret = parse_org(tuple, &parse->org);
1386 case CISTPL_FORMAT_A:
1387 ret = parse_format(tuple, &parse->format);
1389 case CISTPL_NO_LINK:
1390 case CISTPL_LINKTARGET:
1394 ret = CS_UNSUPPORTED_FUNCTION;
1399 EXPORT_SYMBOL(pccard_parse_tuple);
1401 /*======================================================================
1403 This is used internally by Card Services to look up CIS stuff.
1405 ======================================================================*/
1407 int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse)
1413 buf = kmalloc(256, GFP_KERNEL);
1415 return CS_OUT_OF_RESOURCE;
1416 tuple.DesiredTuple = code;
1417 tuple.Attributes = TUPLE_RETURN_COMMON;
1418 ret = pccard_get_first_tuple(s, function, &tuple);
1419 if (ret != CS_SUCCESS) goto done;
1420 tuple.TupleData = buf;
1421 tuple.TupleOffset = 0;
1422 tuple.TupleDataMax = 255;
1423 ret = pccard_get_tuple_data(s, &tuple);
1424 if (ret != CS_SUCCESS) goto done;
1425 ret = pccard_parse_tuple(&tuple, parse);
1430 EXPORT_SYMBOL(pccard_read_tuple);
1432 /*======================================================================
1434 This tries to determine if a card has a sensible CIS. It returns
1435 the number of tuples in the CIS, or 0 if the CIS looks bad. The
1436 checks include making sure several critical tuples are present and
1437 valid; seeing if the total number of tuples is reasonable; and
1438 looking for tuples that use reserved codes.
1440 ======================================================================*/
1442 int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, cisinfo_t *info)
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 info->Chains = 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 (info->Chains = 1; info->Chains < MAX_TUPLES; info->Chains++) {
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 ((info->Chains == MAX_TUPLES) || (reserved > 5) ||
1494 ((!dev_ok || !ident_ok) && (info->Chains > 10)))
1502 EXPORT_SYMBOL(pccard_validate_cis);