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>
29 #include <pcmcia/cs_types.h>
30 #include <pcmcia/ss.h>
31 #include <pcmcia/cs.h>
32 #include <pcmcia/bulkmem.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 = le32_to_cpu(*(__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+(short)le16_to_cpu(*(__le16 *)p)-2;
673 csum->len = le16_to_cpu(*(__le16 *)(p + 2));
678 /*====================================================================*/
680 static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link)
682 if (tuple->TupleDataLen < 4)
684 link->addr = le32_to_cpu(*(__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 = le32_to_cpu(*(__le32 *)p); p += 4;
708 /*====================================================================*/
710 static int parse_strings(u_char *p, u_char *q, int max,
711 char *s, u_char *ofs, u_char *found)
715 if (p == q) return CS_BAD_TUPLE;
717 for (i = 0; i < max; i++) {
718 if (*p == 0xff) break;
722 s[j++] = (*p == 0xff) ? '\0' : *p;
723 if ((*p == '\0') || (*p == 0xff)) break;
724 if (++p == q) return CS_BAD_TUPLE;
726 if ((*p == 0xff) || (++p == q)) break;
732 return (ns == max) ? CS_SUCCESS : CS_BAD_TUPLE;
736 /*====================================================================*/
738 static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1)
742 p = (u_char *)tuple->TupleData;
743 q = p + tuple->TupleDataLen;
745 vers_1->major = *p; p++;
746 vers_1->minor = *p; p++;
747 if (p >= q) return CS_BAD_TUPLE;
749 return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS,
750 vers_1->str, vers_1->ofs, &vers_1->ns);
753 /*====================================================================*/
755 static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr)
759 p = (u_char *)tuple->TupleData;
760 q = p + tuple->TupleDataLen;
762 return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS,
763 altstr->str, altstr->ofs, &altstr->ns);
766 /*====================================================================*/
768 static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec)
773 p = (u_char *)tuple->TupleData;
774 q = p + tuple->TupleDataLen;
776 for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) {
778 jedec->id[nid].mfr = p[0];
779 jedec->id[nid].info = p[1];
786 /*====================================================================*/
788 static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m)
791 if (tuple->TupleDataLen < 4)
793 p = (__le16 *)tuple->TupleData;
794 m->manf = le16_to_cpu(p[0]);
795 m->card = le16_to_cpu(p[1]);
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 = le16_to_cpu(*(__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 = le16_to_cpu(*(__le16 *)p) << 8;
1103 entry->mem.win[0].card_addr =
1104 le16_to_cpu(*(__le16 *)(p+2)) << 8;
1105 entry->mem.win[0].host_addr = 0;
1107 if (p > q) return CS_BAD_TUPLE;
1110 p = parse_mem(p, q, &entry->mem);
1111 if (p == NULL) return CS_BAD_TUPLE;
1116 if (features & 0x80) {
1117 if (p == q) return CS_BAD_TUPLE;
1118 entry->flags |= (*p << 8);
1120 if (++p == q) return CS_BAD_TUPLE;
1124 entry->subtuples = q-p;
1129 /*====================================================================*/
1131 #ifdef CONFIG_CARDBUS
1133 static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar)
1136 if (tuple->TupleDataLen < 6)
1137 return CS_BAD_TUPLE;
1138 p = (u_char *)tuple->TupleData;
1141 bar->size = le32_to_cpu(*(__le32 *)p);
1145 static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config)
1149 p = (u_char *)tuple->TupleData;
1150 if ((*p != 3) || (tuple->TupleDataLen < 6))
1151 return CS_BAD_TUPLE;
1152 config->last_idx = *(++p);
1154 config->base = le32_to_cpu(*(__le32 *)p);
1155 config->subtuples = tuple->TupleDataLen - 6;
1159 static int parse_cftable_entry_cb(tuple_t *tuple,
1160 cistpl_cftable_entry_cb_t *entry)
1162 u_char *p, *q, features;
1164 p = tuple->TupleData;
1165 q = p + tuple->TupleDataLen;
1166 entry->index = *p & 0x3f;
1169 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1171 /* Process optional features */
1172 if (++p == q) return CS_BAD_TUPLE;
1176 if ((features & 3) > 0) {
1177 p = parse_power(p, q, &entry->vcc);
1178 if (p == NULL) return CS_BAD_TUPLE;
1180 entry->vcc.present = 0;
1181 if ((features & 3) > 1) {
1182 p = parse_power(p, q, &entry->vpp1);
1183 if (p == NULL) return CS_BAD_TUPLE;
1185 entry->vpp1.present = 0;
1186 if ((features & 3) > 2) {
1187 p = parse_power(p, q, &entry->vpp2);
1188 if (p == NULL) return CS_BAD_TUPLE;
1190 entry->vpp2.present = 0;
1192 /* I/O window options */
1193 if (features & 0x08) {
1194 if (p == q) return CS_BAD_TUPLE;
1195 entry->io = *p; p++;
1199 /* Interrupt options */
1200 if (features & 0x10) {
1201 p = parse_irq(p, q, &entry->irq);
1202 if (p == NULL) return CS_BAD_TUPLE;
1204 entry->irq.IRQInfo1 = 0;
1206 if (features & 0x20) {
1207 if (p == q) return CS_BAD_TUPLE;
1208 entry->mem = *p; p++;
1213 if (features & 0x80) {
1214 if (p == q) return CS_BAD_TUPLE;
1215 entry->flags |= (*p << 8);
1217 if (++p == q) return CS_BAD_TUPLE;
1218 entry->flags |= (*p << 16);
1221 if (++p == q) return CS_BAD_TUPLE;
1225 entry->subtuples = q-p;
1232 /*====================================================================*/
1234 static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo)
1239 p = (u_char *)tuple->TupleData;
1240 q = p + tuple->TupleDataLen;
1242 for (n = 0; n < CISTPL_MAX_DEVICES; n++) {
1244 geo->geo[n].buswidth = p[0];
1245 geo->geo[n].erase_block = 1 << (p[1]-1);
1246 geo->geo[n].read_block = 1 << (p[2]-1);
1247 geo->geo[n].write_block = 1 << (p[3]-1);
1248 geo->geo[n].partition = 1 << (p[4]-1);
1249 geo->geo[n].interleave = 1 << (p[5]-1);
1256 /*====================================================================*/
1258 static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2)
1262 if (tuple->TupleDataLen < 10)
1263 return CS_BAD_TUPLE;
1265 p = tuple->TupleData;
1266 q = p + tuple->TupleDataLen;
1270 v2->dindex = le16_to_cpu(*(__le16 *)(p+2));
1275 return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL);
1278 /*====================================================================*/
1280 static int parse_org(tuple_t *tuple, cistpl_org_t *org)
1285 p = tuple->TupleData;
1286 q = p + tuple->TupleDataLen;
1287 if (p == q) return CS_BAD_TUPLE;
1289 if (++p == q) return CS_BAD_TUPLE;
1290 for (i = 0; i < 30; i++) {
1292 if (*p == '\0') break;
1293 if (++p == q) return CS_BAD_TUPLE;
1298 /*====================================================================*/
1300 static int parse_format(tuple_t *tuple, cistpl_format_t *fmt)
1304 if (tuple->TupleDataLen < 10)
1305 return CS_BAD_TUPLE;
1307 p = tuple->TupleData;
1311 fmt->offset = le32_to_cpu(*(__le32 *)(p+2));
1312 fmt->length = le32_to_cpu(*(__le32 *)(p+6));
1317 /*====================================================================*/
1319 int pccard_parse_tuple(tuple_t *tuple, cisparse_t *parse)
1321 int ret = CS_SUCCESS;
1323 if (tuple->TupleDataLen > tuple->TupleDataMax)
1324 return CS_BAD_TUPLE;
1325 switch (tuple->TupleCode) {
1327 case CISTPL_DEVICE_A:
1328 ret = parse_device(tuple, &parse->device);
1330 #ifdef CONFIG_CARDBUS
1332 ret = parse_bar(tuple, &parse->bar);
1334 case CISTPL_CONFIG_CB:
1335 ret = parse_config_cb(tuple, &parse->config);
1337 case CISTPL_CFTABLE_ENTRY_CB:
1338 ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb);
1341 case CISTPL_CHECKSUM:
1342 ret = parse_checksum(tuple, &parse->checksum);
1344 case CISTPL_LONGLINK_A:
1345 case CISTPL_LONGLINK_C:
1346 ret = parse_longlink(tuple, &parse->longlink);
1348 case CISTPL_LONGLINK_MFC:
1349 ret = parse_longlink_mfc(tuple, &parse->longlink_mfc);
1352 ret = parse_vers_1(tuple, &parse->version_1);
1355 ret = parse_altstr(tuple, &parse->altstr);
1357 case CISTPL_JEDEC_A:
1358 case CISTPL_JEDEC_C:
1359 ret = parse_jedec(tuple, &parse->jedec);
1362 ret = parse_manfid(tuple, &parse->manfid);
1365 ret = parse_funcid(tuple, &parse->funcid);
1368 ret = parse_funce(tuple, &parse->funce);
1371 ret = parse_config(tuple, &parse->config);
1373 case CISTPL_CFTABLE_ENTRY:
1374 ret = parse_cftable_entry(tuple, &parse->cftable_entry);
1376 case CISTPL_DEVICE_GEO:
1377 case CISTPL_DEVICE_GEO_A:
1378 ret = parse_device_geo(tuple, &parse->device_geo);
1381 ret = parse_vers_2(tuple, &parse->vers_2);
1384 ret = parse_org(tuple, &parse->org);
1387 case CISTPL_FORMAT_A:
1388 ret = parse_format(tuple, &parse->format);
1390 case CISTPL_NO_LINK:
1391 case CISTPL_LINKTARGET:
1395 ret = CS_UNSUPPORTED_FUNCTION;
1400 EXPORT_SYMBOL(pccard_parse_tuple);
1402 /*======================================================================
1404 This is used internally by Card Services to look up CIS stuff.
1406 ======================================================================*/
1408 int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse)
1414 buf = kmalloc(256, GFP_KERNEL);
1416 return CS_OUT_OF_RESOURCE;
1417 tuple.DesiredTuple = code;
1418 tuple.Attributes = TUPLE_RETURN_COMMON;
1419 ret = pccard_get_first_tuple(s, function, &tuple);
1420 if (ret != CS_SUCCESS) goto done;
1421 tuple.TupleData = buf;
1422 tuple.TupleOffset = 0;
1423 tuple.TupleDataMax = 255;
1424 ret = pccard_get_tuple_data(s, &tuple);
1425 if (ret != CS_SUCCESS) goto done;
1426 ret = pccard_parse_tuple(&tuple, parse);
1431 EXPORT_SYMBOL(pccard_read_tuple);
1433 /*======================================================================
1435 This tries to determine if a card has a sensible CIS. It returns
1436 the number of tuples in the CIS, or 0 if the CIS looks bad. The
1437 checks include making sure several critical tuples are present and
1438 valid; seeing if the total number of tuples is reasonable; and
1439 looking for tuples that use reserved codes.
1441 ======================================================================*/
1443 int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, cisinfo_t *info)
1447 int ret, reserved, dev_ok = 0, ident_ok = 0;
1450 return CS_BAD_HANDLE;
1452 tuple = kmalloc(sizeof(*tuple), GFP_KERNEL);
1454 return CS_OUT_OF_RESOURCE;
1455 p = kmalloc(sizeof(*p), GFP_KERNEL);
1458 return CS_OUT_OF_RESOURCE;
1461 info->Chains = reserved = 0;
1462 tuple->DesiredTuple = RETURN_FIRST_TUPLE;
1463 tuple->Attributes = TUPLE_RETURN_COMMON;
1464 ret = pccard_get_first_tuple(s, function, tuple);
1465 if (ret != CS_SUCCESS)
1468 /* First tuple should be DEVICE; we should really have either that
1469 or a CFTABLE_ENTRY of some sort */
1470 if ((tuple->TupleCode == CISTPL_DEVICE) ||
1471 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY, p) == CS_SUCCESS) ||
1472 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY_CB, p) == CS_SUCCESS))
1475 /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
1476 tuple, for card identification. Certain old D-Link and Linksys
1477 cards have only a broken VERS_2 tuple; hence the bogus test. */
1478 if ((pccard_read_tuple(s, function, CISTPL_MANFID, p) == CS_SUCCESS) ||
1479 (pccard_read_tuple(s, function, CISTPL_VERS_1, p) == CS_SUCCESS) ||
1480 (pccard_read_tuple(s, function, CISTPL_VERS_2, p) != CS_NO_MORE_ITEMS))
1483 if (!dev_ok && !ident_ok)
1486 for (info->Chains = 1; info->Chains < MAX_TUPLES; info->Chains++) {
1487 ret = pccard_get_next_tuple(s, function, tuple);
1488 if (ret != CS_SUCCESS) break;
1489 if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) ||
1490 ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) ||
1491 ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff)))
1494 if ((info->Chains == MAX_TUPLES) || (reserved > 5) ||
1495 ((!dev_ok || !ident_ok) && (info->Chains > 10)))
1503 EXPORT_SYMBOL(pccard_validate_cis);