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/config.h>
16 #include <linux/module.h>
17 #include <linux/moduleparam.h>
18 #include <linux/kernel.h>
19 #include <linux/string.h>
20 #include <linux/major.h>
21 #include <linux/errno.h>
22 #include <linux/timer.h>
23 #include <linux/slab.h>
25 #include <linux/sched.h>
26 #include <linux/pci.h>
27 #include <linux/ioport.h>
29 #include <asm/byteorder.h>
31 #include <pcmcia/cs_types.h>
32 #include <pcmcia/ss.h>
33 #include <pcmcia/cs.h>
34 #include <pcmcia/bulkmem.h>
35 #include <pcmcia/cisreg.h>
36 #include <pcmcia/cistpl.h>
37 #include "cs_internal.h"
39 static const u_char mantissa[] = {
40 10, 12, 13, 15, 20, 25, 30, 35,
41 40, 45, 50, 55, 60, 70, 80, 90
44 static const u_int exponent[] = {
45 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
48 /* Convert an extended speed byte to a time in nanoseconds */
49 #define SPEED_CVT(v) \
50 (mantissa[(((v)>>3)&15)-1] * exponent[(v)&7] / 10)
51 /* Convert a power byte to a current in 0.1 microamps */
52 #define POWER_CVT(v) \
53 (mantissa[((v)>>3)&15] * exponent[(v)&7] / 10)
54 #define POWER_SCALE(v) (exponent[(v)&7])
56 /* Upper limit on reasonable # of tuples */
57 #define MAX_TUPLES 200
59 /*====================================================================*/
61 /* Parameters that can be set with 'insmod' */
63 #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0444)
65 INT_MODULE_PARM(cis_width, 0); /* 16-bit CIS? */
67 void release_cis_mem(struct pcmcia_socket *s)
69 if (s->cis_mem.flags & MAP_ACTIVE) {
70 s->cis_mem.flags &= ~MAP_ACTIVE;
71 s->ops->set_mem_map(s, &s->cis_mem);
73 release_resource(s->cis_mem.res);
74 kfree(s->cis_mem.res);
75 s->cis_mem.res = NULL;
81 EXPORT_SYMBOL(release_cis_mem);
84 * Map the card memory at "card_offset" into virtual space.
85 * If flags & MAP_ATTRIB, map the attribute space, otherwise
86 * map the memory space.
89 set_cis_map(struct pcmcia_socket *s, unsigned int card_offset, unsigned int flags)
91 pccard_mem_map *mem = &s->cis_mem;
94 if (!(s->features & SS_CAP_STATIC_MAP) && (mem->res == NULL)) {
95 mem->res = pcmcia_find_mem_region(0, s->map_size, s->map_size, 0, s);
96 if (mem->res == NULL) {
97 printk(KERN_NOTICE "cs: unable to map card memory!\n");
103 if (!(s->features & SS_CAP_STATIC_MAP) && (!s->cis_virt))
104 s->cis_virt = ioremap(mem->res->start, s->map_size);
106 mem->card_start = card_offset;
109 ret = s->ops->set_mem_map(s, mem);
111 iounmap(s->cis_virt);
116 if (s->features & SS_CAP_STATIC_MAP) {
118 iounmap(s->cis_virt);
119 s->cis_virt = ioremap(mem->static_start, s->map_size);
125 /*======================================================================
127 Low-level functions to read and write CIS memory. I think the
128 write routine is only useful for writing one-byte registers.
130 ======================================================================*/
132 /* Bits in attr field */
134 #define IS_INDIRECT 8
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 cs_dbg(s, 3, "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 | ((cis_width) ? MAP_16BIT : 0));
155 memset(ptr, 0xff, len);
159 writeb(flags, sys+CISREG_ICTRL0);
160 writeb(addr & 0xff, sys+CISREG_IADDR0);
161 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
162 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
163 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
164 for ( ; len > 0; len--, buf++)
165 *buf = readb(sys+CISREG_IDATA0);
167 u_int inc = 1, card_offset, flags;
169 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
176 card_offset = addr & ~(s->map_size-1);
178 sys = set_cis_map(s, card_offset, flags);
180 memset(ptr, 0xff, len);
183 end = sys + s->map_size;
184 sys = sys + (addr & (s->map_size-1));
185 for ( ; len > 0; len--, buf++, sys += inc) {
190 card_offset += s->map_size;
194 cs_dbg(s, 3, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n",
195 *(u_char *)(ptr+0), *(u_char *)(ptr+1),
196 *(u_char *)(ptr+2), *(u_char *)(ptr+3));
199 EXPORT_SYMBOL(pcmcia_read_cis_mem);
202 void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
203 u_int len, void *ptr)
205 void __iomem *sys, *end;
206 unsigned char *buf = ptr;
208 cs_dbg(s, 3, "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr, addr, len);
210 if (attr & IS_INDIRECT) {
211 /* Indirect accesses use a bunch of special registers at fixed
212 locations in common memory */
213 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
214 if (attr & IS_ATTR) {
216 flags = ICTRL0_AUTOINC;
219 sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
221 return; /* FIXME: Error */
223 writeb(flags, sys+CISREG_ICTRL0);
224 writeb(addr & 0xff, sys+CISREG_IADDR0);
225 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
226 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
227 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
228 for ( ; len > 0; len--, buf++)
229 writeb(*buf, sys+CISREG_IDATA0);
231 u_int inc = 1, card_offset, flags;
233 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
234 if (attr & IS_ATTR) {
240 card_offset = addr & ~(s->map_size-1);
242 sys = set_cis_map(s, card_offset, flags);
244 return; /* FIXME: error */
246 end = sys + s->map_size;
247 sys = sys + (addr & (s->map_size-1));
248 for ( ; len > 0; len--, buf++, sys += inc) {
253 card_offset += s->map_size;
258 EXPORT_SYMBOL(pcmcia_write_cis_mem);
261 /*======================================================================
263 This is a wrapper around read_cis_mem, with the same interface,
264 but which caches information, for cards whose CIS may not be
265 readable all the time.
267 ======================================================================*/
269 static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr,
270 u_int len, void *ptr)
272 struct cis_cache_entry *cis;
276 if (s->fake_cis_len > addr+len)
277 memcpy(ptr, s->fake_cis+addr, len);
279 memset(ptr, 0xff, len);
283 list_for_each_entry(cis, &s->cis_cache, node) {
284 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
285 memcpy(ptr, cis->cache, len);
290 #ifdef CONFIG_CARDBUS
291 if (s->state & SOCKET_CARDBUS)
292 ret = read_cb_mem(s, attr, addr, len, ptr);
295 ret = pcmcia_read_cis_mem(s, attr, addr, len, ptr);
298 /* Copy data into the cache */
299 cis = kmalloc(sizeof(struct cis_cache_entry) + len, GFP_KERNEL);
304 memcpy(cis->cache, ptr, len);
305 list_add(&cis->node, &s->cis_cache);
311 remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len)
313 struct cis_cache_entry *cis;
315 list_for_each_entry(cis, &s->cis_cache, node)
316 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
317 list_del(&cis->node);
323 void destroy_cis_cache(struct pcmcia_socket *s)
325 struct list_head *l, *n;
327 list_for_each_safe(l, n, &s->cis_cache) {
328 struct cis_cache_entry *cis = list_entry(l, struct cis_cache_entry, node);
330 list_del(&cis->node);
335 * If there was a fake CIS, destroy that as well.
342 EXPORT_SYMBOL(destroy_cis_cache);
344 /*======================================================================
346 This verifies if the CIS of a card matches what is in the CIS
349 ======================================================================*/
351 int verify_cis_cache(struct pcmcia_socket *s)
353 struct cis_cache_entry *cis;
356 buf = kmalloc(256, GFP_KERNEL);
359 list_for_each_entry(cis, &s->cis_cache, node) {
364 #ifdef CONFIG_CARDBUS
365 if (s->state & SOCKET_CARDBUS)
366 read_cb_mem(s, cis->attr, cis->addr, len, buf);
369 pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf);
371 if (memcmp(buf, cis->cache, len) != 0) {
380 /*======================================================================
382 For really bad cards, we provide a facility for uploading a
385 ======================================================================*/
387 int pcmcia_replace_cis(struct pcmcia_socket *s, cisdump_t *cis)
389 if (s->fake_cis != NULL) {
393 if (cis->Length > CISTPL_MAX_CIS_SIZE)
395 s->fake_cis = kmalloc(cis->Length, GFP_KERNEL);
396 if (s->fake_cis == NULL)
397 return CS_OUT_OF_RESOURCE;
398 s->fake_cis_len = cis->Length;
399 memcpy(s->fake_cis, cis->Data, cis->Length);
402 EXPORT_SYMBOL(pcmcia_replace_cis);
404 /*======================================================================
406 The high-level CIS tuple services
408 ======================================================================*/
410 typedef struct tuple_flags {
417 #define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space)
418 #define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link)
419 #define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn)
420 #define SPACE(f) (((tuple_flags *)(&(f)))->space)
422 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int func, tuple_t *tuple);
424 int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
427 return CS_BAD_HANDLE;
428 if (!(s->state & SOCKET_PRESENT))
430 tuple->TupleLink = tuple->Flags = 0;
431 #ifdef CONFIG_CARDBUS
432 if (s->state & SOCKET_CARDBUS) {
433 struct pci_dev *dev = s->cb_dev;
435 pci_bus_read_config_dword(dev->subordinate, 0, PCI_CARDBUS_CIS, &ptr);
436 tuple->CISOffset = ptr & ~7;
437 SPACE(tuple->Flags) = (ptr & 7);
441 /* Assume presence of a LONGLINK_C to address 0 */
442 tuple->CISOffset = tuple->LinkOffset = 0;
443 SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
445 if (!(s->state & SOCKET_CARDBUS) && (s->functions > 1) &&
446 !(tuple->Attributes & TUPLE_RETURN_COMMON)) {
447 cisdata_t req = tuple->DesiredTuple;
448 tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
449 if (pccard_get_next_tuple(s, function, tuple) == CS_SUCCESS) {
450 tuple->DesiredTuple = CISTPL_LINKTARGET;
451 if (pccard_get_next_tuple(s, function, tuple) != CS_SUCCESS)
452 return CS_NO_MORE_ITEMS;
454 tuple->CISOffset = tuple->TupleLink = 0;
455 tuple->DesiredTuple = req;
457 return pccard_get_next_tuple(s, function, tuple);
459 EXPORT_SYMBOL(pccard_get_first_tuple);
461 static int follow_link(struct pcmcia_socket *s, tuple_t *tuple)
466 if (MFC_FN(tuple->Flags)) {
467 /* Get indirect link from the MFC tuple */
468 read_cis_cache(s, LINK_SPACE(tuple->Flags),
469 tuple->LinkOffset, 5, link);
470 ofs = le32_to_cpu(*(u_int *)(link+1));
471 SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR);
472 /* Move to the next indirect link */
473 tuple->LinkOffset += 5;
474 MFC_FN(tuple->Flags)--;
475 } else if (HAS_LINK(tuple->Flags)) {
476 ofs = tuple->LinkOffset;
477 SPACE(tuple->Flags) = LINK_SPACE(tuple->Flags);
478 HAS_LINK(tuple->Flags) = 0;
482 if (!(s->state & SOCKET_CARDBUS) && SPACE(tuple->Flags)) {
483 /* This is ugly, but a common CIS error is to code the long
484 link offset incorrectly, so we check the right spot... */
485 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
486 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
487 (strncmp(link+2, "CIS", 3) == 0))
489 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
490 /* Then, we try the wrong spot... */
493 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
494 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
495 (strncmp(link+2, "CIS", 3) == 0))
497 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
501 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
507 return CS_BAD_HANDLE;
508 if (!(s->state & SOCKET_PRESENT))
511 link[1] = tuple->TupleLink;
512 ofs = tuple->CISOffset + tuple->TupleLink;
513 attr = SPACE(tuple->Flags);
515 for (i = 0; i < MAX_TUPLES; i++) {
516 if (link[1] == 0xff) {
517 link[0] = CISTPL_END;
519 read_cis_cache(s, attr, ofs, 2, link);
520 if (link[0] == CISTPL_NULL) {
525 /* End of chain? Follow long link if possible */
526 if (link[0] == CISTPL_END) {
527 if ((ofs = follow_link(s, tuple)) < 0)
528 return CS_NO_MORE_ITEMS;
529 attr = SPACE(tuple->Flags);
530 read_cis_cache(s, attr, ofs, 2, link);
533 /* Is this a link tuple? Make a note of it */
534 if ((link[0] == CISTPL_LONGLINK_A) ||
535 (link[0] == CISTPL_LONGLINK_C) ||
536 (link[0] == CISTPL_LONGLINK_MFC) ||
537 (link[0] == CISTPL_LINKTARGET) ||
538 (link[0] == CISTPL_INDIRECT) ||
539 (link[0] == CISTPL_NO_LINK)) {
541 case CISTPL_LONGLINK_A:
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_LONGLINK_C:
547 HAS_LINK(tuple->Flags) = 1;
548 LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR;
549 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
551 case CISTPL_INDIRECT:
552 HAS_LINK(tuple->Flags) = 1;
553 LINK_SPACE(tuple->Flags) = IS_ATTR | IS_INDIRECT;
554 tuple->LinkOffset = 0;
556 case CISTPL_LONGLINK_MFC:
557 tuple->LinkOffset = ofs + 3;
558 LINK_SPACE(tuple->Flags) = attr;
559 if (function == BIND_FN_ALL) {
560 /* Follow all the MFC links */
561 read_cis_cache(s, attr, ofs+2, 1, &tmp);
562 MFC_FN(tuple->Flags) = tmp;
564 /* Follow exactly one of the links */
565 MFC_FN(tuple->Flags) = 1;
566 tuple->LinkOffset += function * 5;
570 HAS_LINK(tuple->Flags) = 0;
573 if ((tuple->Attributes & TUPLE_RETURN_LINK) &&
574 (tuple->DesiredTuple == RETURN_FIRST_TUPLE))
577 if (tuple->DesiredTuple == RETURN_FIRST_TUPLE)
580 if (link[0] == tuple->DesiredTuple)
584 if (i == MAX_TUPLES) {
585 cs_dbg(s, 1, "cs: overrun in pcmcia_get_next_tuple\n");
586 return CS_NO_MORE_ITEMS;
589 tuple->TupleCode = link[0];
590 tuple->TupleLink = link[1];
591 tuple->CISOffset = ofs + 2;
594 EXPORT_SYMBOL(pccard_get_next_tuple);
596 /*====================================================================*/
598 #define _MIN(a, b) (((a) < (b)) ? (a) : (b))
600 int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple)
605 return CS_BAD_HANDLE;
607 if (tuple->TupleLink < tuple->TupleOffset)
608 return CS_NO_MORE_ITEMS;
609 len = tuple->TupleLink - tuple->TupleOffset;
610 tuple->TupleDataLen = tuple->TupleLink;
613 read_cis_cache(s, SPACE(tuple->Flags),
614 tuple->CISOffset + tuple->TupleOffset,
615 _MIN(len, tuple->TupleDataMax), tuple->TupleData);
618 EXPORT_SYMBOL(pccard_get_tuple_data);
621 /*======================================================================
623 Parsing routines for individual tuples
625 ======================================================================*/
627 static int parse_device(tuple_t *tuple, cistpl_device_t *device)
633 p = (u_char *)tuple->TupleData;
634 q = p + tuple->TupleDataLen;
637 for (i = 0; i < CISTPL_MAX_DEVICES; i++) {
639 if (*p == 0xff) break;
640 device->dev[i].type = (*p >> 4);
641 device->dev[i].wp = (*p & 0x08) ? 1 : 0;
643 case 0: device->dev[i].speed = 0; break;
644 case 1: device->dev[i].speed = 250; break;
645 case 2: device->dev[i].speed = 200; break;
646 case 3: device->dev[i].speed = 150; break;
647 case 4: device->dev[i].speed = 100; break;
649 if (++p == q) return CS_BAD_TUPLE;
650 device->dev[i].speed = SPEED_CVT(*p);
652 if (++p == q) return CS_BAD_TUPLE;
658 if (++p == q) return CS_BAD_TUPLE;
659 if (*p == 0xff) break;
661 if (scale == 7) return CS_BAD_TUPLE;
662 device->dev[i].size = ((*p >> 3) + 1) * (512 << (scale*2));
670 /*====================================================================*/
672 static int parse_checksum(tuple_t *tuple, cistpl_checksum_t *csum)
675 if (tuple->TupleDataLen < 5)
677 p = (u_char *)tuple->TupleData;
678 csum->addr = tuple->CISOffset+(short)le16_to_cpu(*(u_short *)p)-2;
679 csum->len = le16_to_cpu(*(u_short *)(p + 2));
684 /*====================================================================*/
686 static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link)
688 if (tuple->TupleDataLen < 4)
690 link->addr = le32_to_cpu(*(u_int *)tuple->TupleData);
694 /*====================================================================*/
696 static int parse_longlink_mfc(tuple_t *tuple,
697 cistpl_longlink_mfc_t *link)
702 p = (u_char *)tuple->TupleData;
705 if (tuple->TupleDataLen <= link->nfn*5)
707 for (i = 0; i < link->nfn; i++) {
708 link->fn[i].space = *p; p++;
709 link->fn[i].addr = le32_to_cpu(*(u_int *)p); p += 4;
714 /*====================================================================*/
716 static int parse_strings(u_char *p, u_char *q, int max,
717 char *s, u_char *ofs, u_char *found)
721 if (p == q) return CS_BAD_TUPLE;
723 for (i = 0; i < max; i++) {
724 if (*p == 0xff) break;
728 s[j++] = (*p == 0xff) ? '\0' : *p;
729 if ((*p == '\0') || (*p == 0xff)) break;
730 if (++p == q) return CS_BAD_TUPLE;
732 if ((*p == 0xff) || (++p == q)) break;
738 return (ns == max) ? CS_SUCCESS : CS_BAD_TUPLE;
742 /*====================================================================*/
744 static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1)
748 p = (u_char *)tuple->TupleData;
749 q = p + tuple->TupleDataLen;
751 vers_1->major = *p; p++;
752 vers_1->minor = *p; p++;
753 if (p >= q) return CS_BAD_TUPLE;
755 return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS,
756 vers_1->str, vers_1->ofs, &vers_1->ns);
759 /*====================================================================*/
761 static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr)
765 p = (u_char *)tuple->TupleData;
766 q = p + tuple->TupleDataLen;
768 return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS,
769 altstr->str, altstr->ofs, &altstr->ns);
772 /*====================================================================*/
774 static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec)
779 p = (u_char *)tuple->TupleData;
780 q = p + tuple->TupleDataLen;
782 for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) {
784 jedec->id[nid].mfr = p[0];
785 jedec->id[nid].info = p[1];
792 /*====================================================================*/
794 static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m)
797 if (tuple->TupleDataLen < 4)
799 p = (u_short *)tuple->TupleData;
800 m->manf = le16_to_cpu(p[0]);
801 m->card = le16_to_cpu(p[1]);
805 /*====================================================================*/
807 static int parse_funcid(tuple_t *tuple, cistpl_funcid_t *f)
810 if (tuple->TupleDataLen < 2)
812 p = (u_char *)tuple->TupleData;
818 /*====================================================================*/
820 static int parse_funce(tuple_t *tuple, cistpl_funce_t *f)
824 if (tuple->TupleDataLen < 1)
826 p = (u_char *)tuple->TupleData;
828 for (i = 1; i < tuple->TupleDataLen; i++)
833 /*====================================================================*/
835 static int parse_config(tuple_t *tuple, cistpl_config_t *config)
840 p = (u_char *)tuple->TupleData;
842 rmsz = (*p & 0x3c) >> 2;
843 if (tuple->TupleDataLen < rasz+rmsz+4)
845 config->last_idx = *(++p);
848 for (i = 0; i <= rasz; i++)
849 config->base += p[i] << (8*i);
851 for (i = 0; i < 4; i++)
852 config->rmask[i] = 0;
853 for (i = 0; i <= rmsz; i++)
854 config->rmask[i>>2] += p[i] << (8*(i%4));
855 config->subtuples = tuple->TupleDataLen - (rasz+rmsz+4);
859 /*======================================================================
861 The following routines are all used to parse the nightmarish
862 config table entries.
864 ======================================================================*/
866 static u_char *parse_power(u_char *p, u_char *q,
872 if (p == q) return NULL;
876 for (i = 0; i < 7; i++)
877 if (pwr->present & (1<<i)) {
878 if (p == q) return NULL;
879 pwr->param[i] = POWER_CVT(*p);
880 scale = POWER_SCALE(*p);
882 if (++p == q) return NULL;
883 if ((*p & 0x7f) < 100)
884 pwr->param[i] += (*p & 0x7f) * scale / 100;
886 pwr->flags |= CISTPL_POWER_HIGHZ_OK;
890 pwr->flags |= CISTPL_POWER_HIGHZ_REQ;
899 /*====================================================================*/
901 static u_char *parse_timing(u_char *p, u_char *q,
902 cistpl_timing_t *timing)
906 if (p == q) return NULL;
908 if ((scale & 3) != 3) {
909 if (++p == q) return NULL;
910 timing->wait = SPEED_CVT(*p);
911 timing->waitscale = exponent[scale & 3];
915 if ((scale & 7) != 7) {
916 if (++p == q) return NULL;
917 timing->ready = SPEED_CVT(*p);
918 timing->rdyscale = exponent[scale & 7];
923 if (++p == q) return NULL;
924 timing->reserved = SPEED_CVT(*p);
925 timing->rsvscale = exponent[scale];
927 timing->reserved = 0;
932 /*====================================================================*/
934 static u_char *parse_io(u_char *p, u_char *q, cistpl_io_t *io)
938 if (p == q) return NULL;
944 io->win[0].len = (1 << (io->flags & CISTPL_IO_LINES_MASK));
948 if (++p == q) return NULL;
949 io->nwin = (*p & 0x0f) + 1;
950 bsz = (*p & 0x30) >> 4;
952 lsz = (*p & 0xc0) >> 6;
956 for (i = 0; i < io->nwin; i++) {
959 for (j = 0; j < bsz; j++, p++) {
960 if (p == q) return NULL;
961 io->win[i].base += *p << (j*8);
963 for (j = 0; j < lsz; j++, p++) {
964 if (p == q) return NULL;
965 io->win[i].len += *p << (j*8);
971 /*====================================================================*/
973 static u_char *parse_mem(u_char *p, u_char *q, cistpl_mem_t *mem)
975 int i, j, asz, lsz, has_ha;
978 if (p == q) return NULL;
980 mem->nwin = (*p & 0x07) + 1;
981 lsz = (*p & 0x18) >> 3;
982 asz = (*p & 0x60) >> 5;
983 has_ha = (*p & 0x80);
984 if (++p == q) return NULL;
986 for (i = 0; i < mem->nwin; i++) {
988 for (j = 0; j < lsz; j++, p++) {
989 if (p == q) return NULL;
992 for (j = 0; j < asz; j++, p++) {
993 if (p == q) return NULL;
997 for (j = 0; j < asz; j++, p++) {
998 if (p == q) return NULL;
1001 mem->win[i].len = len << 8;
1002 mem->win[i].card_addr = ca << 8;
1003 mem->win[i].host_addr = ha << 8;
1008 /*====================================================================*/
1010 static u_char *parse_irq(u_char *p, u_char *q, cistpl_irq_t *irq)
1012 if (p == q) return NULL;
1013 irq->IRQInfo1 = *p; p++;
1014 if (irq->IRQInfo1 & IRQ_INFO2_VALID) {
1015 if (p+2 > q) return NULL;
1016 irq->IRQInfo2 = (p[1]<<8) + p[0];
1022 /*====================================================================*/
1024 static int parse_cftable_entry(tuple_t *tuple,
1025 cistpl_cftable_entry_t *entry)
1027 u_char *p, *q, features;
1029 p = tuple->TupleData;
1030 q = p + tuple->TupleDataLen;
1031 entry->index = *p & 0x3f;
1034 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1036 if (++p == q) return CS_BAD_TUPLE;
1038 entry->flags |= CISTPL_CFTABLE_BVDS;
1040 entry->flags |= CISTPL_CFTABLE_WP;
1042 entry->flags |= CISTPL_CFTABLE_RDYBSY;
1044 entry->flags |= CISTPL_CFTABLE_MWAIT;
1045 entry->interface = *p & 0x0f;
1047 entry->interface = 0;
1049 /* Process optional features */
1050 if (++p == q) return CS_BAD_TUPLE;
1054 if ((features & 3) > 0) {
1055 p = parse_power(p, q, &entry->vcc);
1056 if (p == NULL) return CS_BAD_TUPLE;
1058 entry->vcc.present = 0;
1059 if ((features & 3) > 1) {
1060 p = parse_power(p, q, &entry->vpp1);
1061 if (p == NULL) return CS_BAD_TUPLE;
1063 entry->vpp1.present = 0;
1064 if ((features & 3) > 2) {
1065 p = parse_power(p, q, &entry->vpp2);
1066 if (p == NULL) return CS_BAD_TUPLE;
1068 entry->vpp2.present = 0;
1070 /* Timing options */
1071 if (features & 0x04) {
1072 p = parse_timing(p, q, &entry->timing);
1073 if (p == NULL) return CS_BAD_TUPLE;
1075 entry->timing.wait = 0;
1076 entry->timing.ready = 0;
1077 entry->timing.reserved = 0;
1080 /* I/O window options */
1081 if (features & 0x08) {
1082 p = parse_io(p, q, &entry->io);
1083 if (p == NULL) return CS_BAD_TUPLE;
1087 /* Interrupt options */
1088 if (features & 0x10) {
1089 p = parse_irq(p, q, &entry->irq);
1090 if (p == NULL) return CS_BAD_TUPLE;
1092 entry->irq.IRQInfo1 = 0;
1094 switch (features & 0x60) {
1096 entry->mem.nwin = 0;
1099 entry->mem.nwin = 1;
1100 entry->mem.win[0].len = le16_to_cpu(*(u_short *)p) << 8;
1101 entry->mem.win[0].card_addr = 0;
1102 entry->mem.win[0].host_addr = 0;
1104 if (p > q) return CS_BAD_TUPLE;
1107 entry->mem.nwin = 1;
1108 entry->mem.win[0].len = le16_to_cpu(*(u_short *)p) << 8;
1109 entry->mem.win[0].card_addr =
1110 le16_to_cpu(*(u_short *)(p+2)) << 8;
1111 entry->mem.win[0].host_addr = 0;
1113 if (p > q) return CS_BAD_TUPLE;
1116 p = parse_mem(p, q, &entry->mem);
1117 if (p == NULL) return CS_BAD_TUPLE;
1122 if (features & 0x80) {
1123 if (p == q) return CS_BAD_TUPLE;
1124 entry->flags |= (*p << 8);
1126 if (++p == q) return CS_BAD_TUPLE;
1130 entry->subtuples = q-p;
1135 /*====================================================================*/
1137 #ifdef CONFIG_CARDBUS
1139 static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar)
1142 if (tuple->TupleDataLen < 6)
1143 return CS_BAD_TUPLE;
1144 p = (u_char *)tuple->TupleData;
1147 bar->size = le32_to_cpu(*(u_int *)p);
1151 static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config)
1155 p = (u_char *)tuple->TupleData;
1156 if ((*p != 3) || (tuple->TupleDataLen < 6))
1157 return CS_BAD_TUPLE;
1158 config->last_idx = *(++p);
1160 config->base = le32_to_cpu(*(u_int *)p);
1161 config->subtuples = tuple->TupleDataLen - 6;
1165 static int parse_cftable_entry_cb(tuple_t *tuple,
1166 cistpl_cftable_entry_cb_t *entry)
1168 u_char *p, *q, features;
1170 p = tuple->TupleData;
1171 q = p + tuple->TupleDataLen;
1172 entry->index = *p & 0x3f;
1175 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1177 /* Process optional features */
1178 if (++p == q) return CS_BAD_TUPLE;
1182 if ((features & 3) > 0) {
1183 p = parse_power(p, q, &entry->vcc);
1184 if (p == NULL) return CS_BAD_TUPLE;
1186 entry->vcc.present = 0;
1187 if ((features & 3) > 1) {
1188 p = parse_power(p, q, &entry->vpp1);
1189 if (p == NULL) return CS_BAD_TUPLE;
1191 entry->vpp1.present = 0;
1192 if ((features & 3) > 2) {
1193 p = parse_power(p, q, &entry->vpp2);
1194 if (p == NULL) return CS_BAD_TUPLE;
1196 entry->vpp2.present = 0;
1198 /* I/O window options */
1199 if (features & 0x08) {
1200 if (p == q) return CS_BAD_TUPLE;
1201 entry->io = *p; p++;
1205 /* Interrupt options */
1206 if (features & 0x10) {
1207 p = parse_irq(p, q, &entry->irq);
1208 if (p == NULL) return CS_BAD_TUPLE;
1210 entry->irq.IRQInfo1 = 0;
1212 if (features & 0x20) {
1213 if (p == q) return CS_BAD_TUPLE;
1214 entry->mem = *p; p++;
1219 if (features & 0x80) {
1220 if (p == q) return CS_BAD_TUPLE;
1221 entry->flags |= (*p << 8);
1223 if (++p == q) return CS_BAD_TUPLE;
1224 entry->flags |= (*p << 16);
1227 if (++p == q) return CS_BAD_TUPLE;
1231 entry->subtuples = q-p;
1238 /*====================================================================*/
1240 static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo)
1245 p = (u_char *)tuple->TupleData;
1246 q = p + tuple->TupleDataLen;
1248 for (n = 0; n < CISTPL_MAX_DEVICES; n++) {
1250 geo->geo[n].buswidth = p[0];
1251 geo->geo[n].erase_block = 1 << (p[1]-1);
1252 geo->geo[n].read_block = 1 << (p[2]-1);
1253 geo->geo[n].write_block = 1 << (p[3]-1);
1254 geo->geo[n].partition = 1 << (p[4]-1);
1255 geo->geo[n].interleave = 1 << (p[5]-1);
1262 /*====================================================================*/
1264 static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2)
1268 if (tuple->TupleDataLen < 10)
1269 return CS_BAD_TUPLE;
1271 p = tuple->TupleData;
1272 q = p + tuple->TupleDataLen;
1276 v2->dindex = le16_to_cpu(*(u_short *)(p+2));
1281 return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL);
1284 /*====================================================================*/
1286 static int parse_org(tuple_t *tuple, cistpl_org_t *org)
1291 p = tuple->TupleData;
1292 q = p + tuple->TupleDataLen;
1293 if (p == q) return CS_BAD_TUPLE;
1295 if (++p == q) return CS_BAD_TUPLE;
1296 for (i = 0; i < 30; i++) {
1298 if (*p == '\0') break;
1299 if (++p == q) return CS_BAD_TUPLE;
1304 /*====================================================================*/
1306 static int parse_format(tuple_t *tuple, cistpl_format_t *fmt)
1310 if (tuple->TupleDataLen < 10)
1311 return CS_BAD_TUPLE;
1313 p = tuple->TupleData;
1317 fmt->offset = le32_to_cpu(*(u_int *)(p+2));
1318 fmt->length = le32_to_cpu(*(u_int *)(p+6));
1323 /*====================================================================*/
1325 int pccard_parse_tuple(tuple_t *tuple, cisparse_t *parse)
1327 int ret = CS_SUCCESS;
1329 if (tuple->TupleDataLen > tuple->TupleDataMax)
1330 return CS_BAD_TUPLE;
1331 switch (tuple->TupleCode) {
1333 case CISTPL_DEVICE_A:
1334 ret = parse_device(tuple, &parse->device);
1336 #ifdef CONFIG_CARDBUS
1338 ret = parse_bar(tuple, &parse->bar);
1340 case CISTPL_CONFIG_CB:
1341 ret = parse_config_cb(tuple, &parse->config);
1343 case CISTPL_CFTABLE_ENTRY_CB:
1344 ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb);
1347 case CISTPL_CHECKSUM:
1348 ret = parse_checksum(tuple, &parse->checksum);
1350 case CISTPL_LONGLINK_A:
1351 case CISTPL_LONGLINK_C:
1352 ret = parse_longlink(tuple, &parse->longlink);
1354 case CISTPL_LONGLINK_MFC:
1355 ret = parse_longlink_mfc(tuple, &parse->longlink_mfc);
1358 ret = parse_vers_1(tuple, &parse->version_1);
1361 ret = parse_altstr(tuple, &parse->altstr);
1363 case CISTPL_JEDEC_A:
1364 case CISTPL_JEDEC_C:
1365 ret = parse_jedec(tuple, &parse->jedec);
1368 ret = parse_manfid(tuple, &parse->manfid);
1371 ret = parse_funcid(tuple, &parse->funcid);
1374 ret = parse_funce(tuple, &parse->funce);
1377 ret = parse_config(tuple, &parse->config);
1379 case CISTPL_CFTABLE_ENTRY:
1380 ret = parse_cftable_entry(tuple, &parse->cftable_entry);
1382 case CISTPL_DEVICE_GEO:
1383 case CISTPL_DEVICE_GEO_A:
1384 ret = parse_device_geo(tuple, &parse->device_geo);
1387 ret = parse_vers_2(tuple, &parse->vers_2);
1390 ret = parse_org(tuple, &parse->org);
1393 case CISTPL_FORMAT_A:
1394 ret = parse_format(tuple, &parse->format);
1396 case CISTPL_NO_LINK:
1397 case CISTPL_LINKTARGET:
1401 ret = CS_UNSUPPORTED_FUNCTION;
1406 EXPORT_SYMBOL(pccard_parse_tuple);
1408 /*======================================================================
1410 This is used internally by Card Services to look up CIS stuff.
1412 ======================================================================*/
1414 int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse)
1420 buf = kmalloc(256, GFP_KERNEL);
1422 return CS_OUT_OF_RESOURCE;
1423 tuple.DesiredTuple = code;
1424 tuple.Attributes = TUPLE_RETURN_COMMON;
1425 ret = pccard_get_first_tuple(s, function, &tuple);
1426 if (ret != CS_SUCCESS) goto done;
1427 tuple.TupleData = buf;
1428 tuple.TupleOffset = 0;
1429 tuple.TupleDataMax = 255;
1430 ret = pccard_get_tuple_data(s, &tuple);
1431 if (ret != CS_SUCCESS) goto done;
1432 ret = pccard_parse_tuple(&tuple, parse);
1437 EXPORT_SYMBOL(pccard_read_tuple);
1439 /*======================================================================
1441 This tries to determine if a card has a sensible CIS. It returns
1442 the number of tuples in the CIS, or 0 if the CIS looks bad. The
1443 checks include making sure several critical tuples are present and
1444 valid; seeing if the total number of tuples is reasonable; and
1445 looking for tuples that use reserved codes.
1447 ======================================================================*/
1449 int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, cisinfo_t *info)
1453 int ret, reserved, dev_ok = 0, ident_ok = 0;
1456 return CS_BAD_HANDLE;
1458 tuple = kmalloc(sizeof(*tuple), GFP_KERNEL);
1460 return CS_OUT_OF_RESOURCE;
1461 p = kmalloc(sizeof(*p), GFP_KERNEL);
1464 return CS_OUT_OF_RESOURCE;
1467 info->Chains = reserved = 0;
1468 tuple->DesiredTuple = RETURN_FIRST_TUPLE;
1469 tuple->Attributes = TUPLE_RETURN_COMMON;
1470 ret = pccard_get_first_tuple(s, function, tuple);
1471 if (ret != CS_SUCCESS)
1474 /* First tuple should be DEVICE; we should really have either that
1475 or a CFTABLE_ENTRY of some sort */
1476 if ((tuple->TupleCode == CISTPL_DEVICE) ||
1477 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY, p) == CS_SUCCESS) ||
1478 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY_CB, p) == CS_SUCCESS))
1481 /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
1482 tuple, for card identification. Certain old D-Link and Linksys
1483 cards have only a broken VERS_2 tuple; hence the bogus test. */
1484 if ((pccard_read_tuple(s, function, CISTPL_MANFID, p) == CS_SUCCESS) ||
1485 (pccard_read_tuple(s, function, CISTPL_VERS_1, p) == CS_SUCCESS) ||
1486 (pccard_read_tuple(s, function, CISTPL_VERS_2, p) != CS_NO_MORE_ITEMS))
1489 if (!dev_ok && !ident_ok)
1492 for (info->Chains = 1; info->Chains < MAX_TUPLES; info->Chains++) {
1493 ret = pccard_get_next_tuple(s, function, tuple);
1494 if (ret != CS_SUCCESS) break;
1495 if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) ||
1496 ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) ||
1497 ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff)))
1500 if ((info->Chains == MAX_TUPLES) || (reserved > 5) ||
1501 ((!dev_ok || !ident_ok) && (info->Chains > 10)))
1509 EXPORT_SYMBOL(pccard_validate_cis);