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;
92 if (!(s->features & SS_CAP_STATIC_MAP) && mem->res == NULL) {
93 mem->res = 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");
98 s->cis_virt = ioremap(mem->res->start, s->map_size);
100 mem->card_start = card_offset;
102 s->ops->set_mem_map(s, mem);
103 if (s->features & SS_CAP_STATIC_MAP) {
105 iounmap(s->cis_virt);
106 s->cis_virt = ioremap(mem->static_start, s->map_size);
111 /*======================================================================
113 Low-level functions to read and write CIS memory. I think the
114 write routine is only useful for writing one-byte registers.
116 ======================================================================*/
118 /* Bits in attr field */
120 #define IS_INDIRECT 8
122 int read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
123 u_int len, void *ptr)
125 void __iomem *sys, *end;
126 unsigned char *buf = ptr;
128 cs_dbg(s, 3, "read_cis_mem(%d, %#x, %u)\n", attr, addr, len);
130 if (attr & IS_INDIRECT) {
131 /* Indirect accesses use a bunch of special registers at fixed
132 locations in common memory */
133 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
134 if (attr & IS_ATTR) {
136 flags = ICTRL0_AUTOINC;
139 sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
141 memset(ptr, 0xff, len);
145 writeb(flags, sys+CISREG_ICTRL0);
146 writeb(addr & 0xff, sys+CISREG_IADDR0);
147 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
148 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
149 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
150 for ( ; len > 0; len--, buf++)
151 *buf = readb(sys+CISREG_IDATA0);
153 u_int inc = 1, card_offset, flags;
155 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
162 card_offset = addr & ~(s->map_size-1);
164 sys = set_cis_map(s, card_offset, flags);
166 memset(ptr, 0xff, len);
169 end = sys + s->map_size;
170 sys = sys + (addr & (s->map_size-1));
171 for ( ; len > 0; len--, buf++, sys += inc) {
176 card_offset += s->map_size;
180 cs_dbg(s, 3, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n",
181 *(u_char *)(ptr+0), *(u_char *)(ptr+1),
182 *(u_char *)(ptr+2), *(u_char *)(ptr+3));
186 void write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
187 u_int len, void *ptr)
189 void __iomem *sys, *end;
190 unsigned char *buf = ptr;
192 cs_dbg(s, 3, "write_cis_mem(%d, %#x, %u)\n", attr, addr, len);
194 if (attr & IS_INDIRECT) {
195 /* Indirect accesses use a bunch of special registers at fixed
196 locations in common memory */
197 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
198 if (attr & IS_ATTR) {
200 flags = ICTRL0_AUTOINC;
203 sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
205 return; /* FIXME: Error */
207 writeb(flags, sys+CISREG_ICTRL0);
208 writeb(addr & 0xff, sys+CISREG_IADDR0);
209 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
210 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
211 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
212 for ( ; len > 0; len--, buf++)
213 writeb(*buf, sys+CISREG_IDATA0);
215 u_int inc = 1, card_offset, flags;
217 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
218 if (attr & IS_ATTR) {
224 card_offset = addr & ~(s->map_size-1);
226 sys = set_cis_map(s, card_offset, flags);
228 return; /* FIXME: error */
230 end = sys + s->map_size;
231 sys = sys + (addr & (s->map_size-1));
232 for ( ; len > 0; len--, buf++, sys += inc) {
237 card_offset += s->map_size;
243 /*======================================================================
245 This is a wrapper around read_cis_mem, with the same interface,
246 but which caches information, for cards whose CIS may not be
247 readable all the time.
249 ======================================================================*/
251 static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr,
252 u_int len, void *ptr)
254 struct cis_cache_entry *cis;
258 if (s->fake_cis_len > addr+len)
259 memcpy(ptr, s->fake_cis+addr, len);
261 memset(ptr, 0xff, len);
265 list_for_each_entry(cis, &s->cis_cache, node) {
266 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
267 memcpy(ptr, cis->cache, len);
272 #ifdef CONFIG_CARDBUS
273 if (s->state & SOCKET_CARDBUS)
274 ret = read_cb_mem(s, attr, addr, len, ptr);
277 ret = read_cis_mem(s, attr, addr, len, ptr);
280 /* Copy data into the cache */
281 cis = kmalloc(sizeof(struct cis_cache_entry) + len, GFP_KERNEL);
286 memcpy(cis->cache, ptr, len);
287 list_add(&cis->node, &s->cis_cache);
293 remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len)
295 struct cis_cache_entry *cis;
297 list_for_each_entry(cis, &s->cis_cache, node)
298 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
299 list_del(&cis->node);
305 void destroy_cis_cache(struct pcmcia_socket *s)
307 struct list_head *l, *n;
309 list_for_each_safe(l, n, &s->cis_cache) {
310 struct cis_cache_entry *cis = list_entry(l, struct cis_cache_entry, node);
312 list_del(&cis->node);
317 * If there was a fake CIS, destroy that as well.
324 EXPORT_SYMBOL(destroy_cis_cache);
326 /*======================================================================
328 This verifies if the CIS of a card matches what is in the CIS
331 ======================================================================*/
333 int verify_cis_cache(struct pcmcia_socket *s)
335 struct cis_cache_entry *cis;
338 buf = kmalloc(256, GFP_KERNEL);
341 list_for_each_entry(cis, &s->cis_cache, node) {
346 #ifdef CONFIG_CARDBUS
347 if (s->state & SOCKET_CARDBUS)
348 read_cb_mem(s, cis->attr, cis->addr, len, buf);
351 read_cis_mem(s, cis->attr, cis->addr, len, buf);
353 if (memcmp(buf, cis->cache, len) != 0) {
362 /*======================================================================
364 For really bad cards, we provide a facility for uploading a
367 ======================================================================*/
369 int pcmcia_replace_cis(struct pcmcia_socket *s, cisdump_t *cis)
371 if (s->fake_cis != NULL) {
375 if (cis->Length > CISTPL_MAX_CIS_SIZE)
377 s->fake_cis = kmalloc(cis->Length, GFP_KERNEL);
378 if (s->fake_cis == NULL)
379 return CS_OUT_OF_RESOURCE;
380 s->fake_cis_len = cis->Length;
381 memcpy(s->fake_cis, cis->Data, cis->Length);
385 /*======================================================================
387 The high-level CIS tuple services
389 ======================================================================*/
391 typedef struct tuple_flags {
398 #define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space)
399 #define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link)
400 #define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn)
401 #define SPACE(f) (((tuple_flags *)(&(f)))->space)
403 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int func, tuple_t *tuple);
405 int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
408 return CS_BAD_HANDLE;
409 if (!(s->state & SOCKET_PRESENT))
411 tuple->TupleLink = tuple->Flags = 0;
412 #ifdef CONFIG_CARDBUS
413 if (s->state & SOCKET_CARDBUS) {
414 struct pci_dev *dev = s->cb_dev;
416 pci_bus_read_config_dword(dev->subordinate, 0, PCI_CARDBUS_CIS, &ptr);
417 tuple->CISOffset = ptr & ~7;
418 SPACE(tuple->Flags) = (ptr & 7);
422 /* Assume presence of a LONGLINK_C to address 0 */
423 tuple->CISOffset = tuple->LinkOffset = 0;
424 SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
426 if (!(s->state & SOCKET_CARDBUS) && (s->functions > 1) &&
427 !(tuple->Attributes & TUPLE_RETURN_COMMON)) {
428 cisdata_t req = tuple->DesiredTuple;
429 tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
430 if (pccard_get_next_tuple(s, function, tuple) == CS_SUCCESS) {
431 tuple->DesiredTuple = CISTPL_LINKTARGET;
432 if (pccard_get_next_tuple(s, function, tuple) != CS_SUCCESS)
433 return CS_NO_MORE_ITEMS;
435 tuple->CISOffset = tuple->TupleLink = 0;
436 tuple->DesiredTuple = req;
438 return pccard_get_next_tuple(s, function, tuple);
440 EXPORT_SYMBOL(pccard_get_first_tuple);
442 static int follow_link(struct pcmcia_socket *s, tuple_t *tuple)
447 if (MFC_FN(tuple->Flags)) {
448 /* Get indirect link from the MFC tuple */
449 read_cis_cache(s, LINK_SPACE(tuple->Flags),
450 tuple->LinkOffset, 5, link);
451 ofs = le32_to_cpu(*(u_int *)(link+1));
452 SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR);
453 /* Move to the next indirect link */
454 tuple->LinkOffset += 5;
455 MFC_FN(tuple->Flags)--;
456 } else if (HAS_LINK(tuple->Flags)) {
457 ofs = tuple->LinkOffset;
458 SPACE(tuple->Flags) = LINK_SPACE(tuple->Flags);
459 HAS_LINK(tuple->Flags) = 0;
463 if (!(s->state & SOCKET_CARDBUS) && SPACE(tuple->Flags)) {
464 /* This is ugly, but a common CIS error is to code the long
465 link offset incorrectly, so we check the right spot... */
466 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
467 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
468 (strncmp(link+2, "CIS", 3) == 0))
470 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
471 /* Then, we try the wrong spot... */
474 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
475 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
476 (strncmp(link+2, "CIS", 3) == 0))
478 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
482 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
488 return CS_BAD_HANDLE;
489 if (!(s->state & SOCKET_PRESENT))
492 link[1] = tuple->TupleLink;
493 ofs = tuple->CISOffset + tuple->TupleLink;
494 attr = SPACE(tuple->Flags);
496 for (i = 0; i < MAX_TUPLES; i++) {
497 if (link[1] == 0xff) {
498 link[0] = CISTPL_END;
500 read_cis_cache(s, attr, ofs, 2, link);
501 if (link[0] == CISTPL_NULL) {
506 /* End of chain? Follow long link if possible */
507 if (link[0] == CISTPL_END) {
508 if ((ofs = follow_link(s, tuple)) < 0)
509 return CS_NO_MORE_ITEMS;
510 attr = SPACE(tuple->Flags);
511 read_cis_cache(s, attr, ofs, 2, link);
514 /* Is this a link tuple? Make a note of it */
515 if ((link[0] == CISTPL_LONGLINK_A) ||
516 (link[0] == CISTPL_LONGLINK_C) ||
517 (link[0] == CISTPL_LONGLINK_MFC) ||
518 (link[0] == CISTPL_LINKTARGET) ||
519 (link[0] == CISTPL_INDIRECT) ||
520 (link[0] == CISTPL_NO_LINK)) {
522 case CISTPL_LONGLINK_A:
523 HAS_LINK(tuple->Flags) = 1;
524 LINK_SPACE(tuple->Flags) = attr | IS_ATTR;
525 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
527 case CISTPL_LONGLINK_C:
528 HAS_LINK(tuple->Flags) = 1;
529 LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR;
530 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
532 case CISTPL_INDIRECT:
533 HAS_LINK(tuple->Flags) = 1;
534 LINK_SPACE(tuple->Flags) = IS_ATTR | IS_INDIRECT;
535 tuple->LinkOffset = 0;
537 case CISTPL_LONGLINK_MFC:
538 tuple->LinkOffset = ofs + 3;
539 LINK_SPACE(tuple->Flags) = attr;
540 if (function == BIND_FN_ALL) {
541 /* Follow all the MFC links */
542 read_cis_cache(s, attr, ofs+2, 1, &tmp);
543 MFC_FN(tuple->Flags) = tmp;
545 /* Follow exactly one of the links */
546 MFC_FN(tuple->Flags) = 1;
547 tuple->LinkOffset += function * 5;
551 HAS_LINK(tuple->Flags) = 0;
554 if ((tuple->Attributes & TUPLE_RETURN_LINK) &&
555 (tuple->DesiredTuple == RETURN_FIRST_TUPLE))
558 if (tuple->DesiredTuple == RETURN_FIRST_TUPLE)
561 if (link[0] == tuple->DesiredTuple)
565 if (i == MAX_TUPLES) {
566 cs_dbg(s, 1, "cs: overrun in pcmcia_get_next_tuple\n");
567 return CS_NO_MORE_ITEMS;
570 tuple->TupleCode = link[0];
571 tuple->TupleLink = link[1];
572 tuple->CISOffset = ofs + 2;
575 EXPORT_SYMBOL(pccard_get_next_tuple);
577 /*====================================================================*/
579 #define _MIN(a, b) (((a) < (b)) ? (a) : (b))
581 int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple)
586 return CS_BAD_HANDLE;
588 if (tuple->TupleLink < tuple->TupleOffset)
589 return CS_NO_MORE_ITEMS;
590 len = tuple->TupleLink - tuple->TupleOffset;
591 tuple->TupleDataLen = tuple->TupleLink;
594 read_cis_cache(s, SPACE(tuple->Flags),
595 tuple->CISOffset + tuple->TupleOffset,
596 _MIN(len, tuple->TupleDataMax), tuple->TupleData);
599 EXPORT_SYMBOL(pccard_get_tuple_data);
602 /*======================================================================
604 Parsing routines for individual tuples
606 ======================================================================*/
608 static int parse_device(tuple_t *tuple, cistpl_device_t *device)
614 p = (u_char *)tuple->TupleData;
615 q = p + tuple->TupleDataLen;
618 for (i = 0; i < CISTPL_MAX_DEVICES; i++) {
620 if (*p == 0xff) break;
621 device->dev[i].type = (*p >> 4);
622 device->dev[i].wp = (*p & 0x08) ? 1 : 0;
624 case 0: device->dev[i].speed = 0; break;
625 case 1: device->dev[i].speed = 250; break;
626 case 2: device->dev[i].speed = 200; break;
627 case 3: device->dev[i].speed = 150; break;
628 case 4: device->dev[i].speed = 100; break;
630 if (++p == q) return CS_BAD_TUPLE;
631 device->dev[i].speed = SPEED_CVT(*p);
633 if (++p == q) return CS_BAD_TUPLE;
639 if (++p == q) return CS_BAD_TUPLE;
640 if (*p == 0xff) break;
642 if (scale == 7) return CS_BAD_TUPLE;
643 device->dev[i].size = ((*p >> 3) + 1) * (512 << (scale*2));
651 /*====================================================================*/
653 static int parse_checksum(tuple_t *tuple, cistpl_checksum_t *csum)
656 if (tuple->TupleDataLen < 5)
658 p = (u_char *)tuple->TupleData;
659 csum->addr = tuple->CISOffset+(short)le16_to_cpu(*(u_short *)p)-2;
660 csum->len = le16_to_cpu(*(u_short *)(p + 2));
665 /*====================================================================*/
667 static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link)
669 if (tuple->TupleDataLen < 4)
671 link->addr = le32_to_cpu(*(u_int *)tuple->TupleData);
675 /*====================================================================*/
677 static int parse_longlink_mfc(tuple_t *tuple,
678 cistpl_longlink_mfc_t *link)
683 p = (u_char *)tuple->TupleData;
686 if (tuple->TupleDataLen <= link->nfn*5)
688 for (i = 0; i < link->nfn; i++) {
689 link->fn[i].space = *p; p++;
690 link->fn[i].addr = le32_to_cpu(*(u_int *)p); p += 4;
695 /*====================================================================*/
697 static int parse_strings(u_char *p, u_char *q, int max,
698 char *s, u_char *ofs, u_char *found)
702 if (p == q) return CS_BAD_TUPLE;
704 for (i = 0; i < max; i++) {
705 if (*p == 0xff) break;
709 s[j++] = (*p == 0xff) ? '\0' : *p;
710 if ((*p == '\0') || (*p == 0xff)) break;
711 if (++p == q) return CS_BAD_TUPLE;
713 if ((*p == 0xff) || (++p == q)) break;
719 return (ns == max) ? CS_SUCCESS : CS_BAD_TUPLE;
723 /*====================================================================*/
725 static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1)
729 p = (u_char *)tuple->TupleData;
730 q = p + tuple->TupleDataLen;
732 vers_1->major = *p; p++;
733 vers_1->minor = *p; p++;
734 if (p >= q) return CS_BAD_TUPLE;
736 return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS,
737 vers_1->str, vers_1->ofs, &vers_1->ns);
740 /*====================================================================*/
742 static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr)
746 p = (u_char *)tuple->TupleData;
747 q = p + tuple->TupleDataLen;
749 return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS,
750 altstr->str, altstr->ofs, &altstr->ns);
753 /*====================================================================*/
755 static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec)
760 p = (u_char *)tuple->TupleData;
761 q = p + tuple->TupleDataLen;
763 for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) {
765 jedec->id[nid].mfr = p[0];
766 jedec->id[nid].info = p[1];
773 /*====================================================================*/
775 static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m)
778 if (tuple->TupleDataLen < 4)
780 p = (u_short *)tuple->TupleData;
781 m->manf = le16_to_cpu(p[0]);
782 m->card = le16_to_cpu(p[1]);
786 /*====================================================================*/
788 static int parse_funcid(tuple_t *tuple, cistpl_funcid_t *f)
791 if (tuple->TupleDataLen < 2)
793 p = (u_char *)tuple->TupleData;
799 /*====================================================================*/
801 static int parse_funce(tuple_t *tuple, cistpl_funce_t *f)
805 if (tuple->TupleDataLen < 1)
807 p = (u_char *)tuple->TupleData;
809 for (i = 1; i < tuple->TupleDataLen; i++)
814 /*====================================================================*/
816 static int parse_config(tuple_t *tuple, cistpl_config_t *config)
821 p = (u_char *)tuple->TupleData;
823 rmsz = (*p & 0x3c) >> 2;
824 if (tuple->TupleDataLen < rasz+rmsz+4)
826 config->last_idx = *(++p);
829 for (i = 0; i <= rasz; i++)
830 config->base += p[i] << (8*i);
832 for (i = 0; i < 4; i++)
833 config->rmask[i] = 0;
834 for (i = 0; i <= rmsz; i++)
835 config->rmask[i>>2] += p[i] << (8*(i%4));
836 config->subtuples = tuple->TupleDataLen - (rasz+rmsz+4);
840 /*======================================================================
842 The following routines are all used to parse the nightmarish
843 config table entries.
845 ======================================================================*/
847 static u_char *parse_power(u_char *p, u_char *q,
853 if (p == q) return NULL;
857 for (i = 0; i < 7; i++)
858 if (pwr->present & (1<<i)) {
859 if (p == q) return NULL;
860 pwr->param[i] = POWER_CVT(*p);
861 scale = POWER_SCALE(*p);
863 if (++p == q) return NULL;
864 if ((*p & 0x7f) < 100)
865 pwr->param[i] += (*p & 0x7f) * scale / 100;
867 pwr->flags |= CISTPL_POWER_HIGHZ_OK;
871 pwr->flags |= CISTPL_POWER_HIGHZ_REQ;
880 /*====================================================================*/
882 static u_char *parse_timing(u_char *p, u_char *q,
883 cistpl_timing_t *timing)
887 if (p == q) return NULL;
889 if ((scale & 3) != 3) {
890 if (++p == q) return NULL;
891 timing->wait = SPEED_CVT(*p);
892 timing->waitscale = exponent[scale & 3];
896 if ((scale & 7) != 7) {
897 if (++p == q) return NULL;
898 timing->ready = SPEED_CVT(*p);
899 timing->rdyscale = exponent[scale & 7];
904 if (++p == q) return NULL;
905 timing->reserved = SPEED_CVT(*p);
906 timing->rsvscale = exponent[scale];
908 timing->reserved = 0;
913 /*====================================================================*/
915 static u_char *parse_io(u_char *p, u_char *q, cistpl_io_t *io)
919 if (p == q) return NULL;
925 io->win[0].len = (1 << (io->flags & CISTPL_IO_LINES_MASK));
929 if (++p == q) return NULL;
930 io->nwin = (*p & 0x0f) + 1;
931 bsz = (*p & 0x30) >> 4;
933 lsz = (*p & 0xc0) >> 6;
937 for (i = 0; i < io->nwin; i++) {
940 for (j = 0; j < bsz; j++, p++) {
941 if (p == q) return NULL;
942 io->win[i].base += *p << (j*8);
944 for (j = 0; j < lsz; j++, p++) {
945 if (p == q) return NULL;
946 io->win[i].len += *p << (j*8);
952 /*====================================================================*/
954 static u_char *parse_mem(u_char *p, u_char *q, cistpl_mem_t *mem)
956 int i, j, asz, lsz, has_ha;
959 if (p == q) return NULL;
961 mem->nwin = (*p & 0x07) + 1;
962 lsz = (*p & 0x18) >> 3;
963 asz = (*p & 0x60) >> 5;
964 has_ha = (*p & 0x80);
965 if (++p == q) return NULL;
967 for (i = 0; i < mem->nwin; i++) {
969 for (j = 0; j < lsz; j++, p++) {
970 if (p == q) return NULL;
973 for (j = 0; j < asz; j++, p++) {
974 if (p == q) return NULL;
978 for (j = 0; j < asz; j++, p++) {
979 if (p == q) return NULL;
982 mem->win[i].len = len << 8;
983 mem->win[i].card_addr = ca << 8;
984 mem->win[i].host_addr = ha << 8;
989 /*====================================================================*/
991 static u_char *parse_irq(u_char *p, u_char *q, cistpl_irq_t *irq)
993 if (p == q) return NULL;
994 irq->IRQInfo1 = *p; p++;
995 if (irq->IRQInfo1 & IRQ_INFO2_VALID) {
996 if (p+2 > q) return NULL;
997 irq->IRQInfo2 = (p[1]<<8) + p[0];
1003 /*====================================================================*/
1005 static int parse_cftable_entry(tuple_t *tuple,
1006 cistpl_cftable_entry_t *entry)
1008 u_char *p, *q, features;
1010 p = tuple->TupleData;
1011 q = p + tuple->TupleDataLen;
1012 entry->index = *p & 0x3f;
1015 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1017 if (++p == q) return CS_BAD_TUPLE;
1019 entry->flags |= CISTPL_CFTABLE_BVDS;
1021 entry->flags |= CISTPL_CFTABLE_WP;
1023 entry->flags |= CISTPL_CFTABLE_RDYBSY;
1025 entry->flags |= CISTPL_CFTABLE_MWAIT;
1026 entry->interface = *p & 0x0f;
1028 entry->interface = 0;
1030 /* Process optional features */
1031 if (++p == q) return CS_BAD_TUPLE;
1035 if ((features & 3) > 0) {
1036 p = parse_power(p, q, &entry->vcc);
1037 if (p == NULL) return CS_BAD_TUPLE;
1039 entry->vcc.present = 0;
1040 if ((features & 3) > 1) {
1041 p = parse_power(p, q, &entry->vpp1);
1042 if (p == NULL) return CS_BAD_TUPLE;
1044 entry->vpp1.present = 0;
1045 if ((features & 3) > 2) {
1046 p = parse_power(p, q, &entry->vpp2);
1047 if (p == NULL) return CS_BAD_TUPLE;
1049 entry->vpp2.present = 0;
1051 /* Timing options */
1052 if (features & 0x04) {
1053 p = parse_timing(p, q, &entry->timing);
1054 if (p == NULL) return CS_BAD_TUPLE;
1056 entry->timing.wait = 0;
1057 entry->timing.ready = 0;
1058 entry->timing.reserved = 0;
1061 /* I/O window options */
1062 if (features & 0x08) {
1063 p = parse_io(p, q, &entry->io);
1064 if (p == NULL) return CS_BAD_TUPLE;
1068 /* Interrupt options */
1069 if (features & 0x10) {
1070 p = parse_irq(p, q, &entry->irq);
1071 if (p == NULL) return CS_BAD_TUPLE;
1073 entry->irq.IRQInfo1 = 0;
1075 switch (features & 0x60) {
1077 entry->mem.nwin = 0;
1080 entry->mem.nwin = 1;
1081 entry->mem.win[0].len = le16_to_cpu(*(u_short *)p) << 8;
1082 entry->mem.win[0].card_addr = 0;
1083 entry->mem.win[0].host_addr = 0;
1085 if (p > q) return CS_BAD_TUPLE;
1088 entry->mem.nwin = 1;
1089 entry->mem.win[0].len = le16_to_cpu(*(u_short *)p) << 8;
1090 entry->mem.win[0].card_addr =
1091 le16_to_cpu(*(u_short *)(p+2)) << 8;
1092 entry->mem.win[0].host_addr = 0;
1094 if (p > q) return CS_BAD_TUPLE;
1097 p = parse_mem(p, q, &entry->mem);
1098 if (p == NULL) return CS_BAD_TUPLE;
1103 if (features & 0x80) {
1104 if (p == q) return CS_BAD_TUPLE;
1105 entry->flags |= (*p << 8);
1107 if (++p == q) return CS_BAD_TUPLE;
1111 entry->subtuples = q-p;
1116 /*====================================================================*/
1118 #ifdef CONFIG_CARDBUS
1120 static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar)
1123 if (tuple->TupleDataLen < 6)
1124 return CS_BAD_TUPLE;
1125 p = (u_char *)tuple->TupleData;
1128 bar->size = le32_to_cpu(*(u_int *)p);
1132 static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config)
1136 p = (u_char *)tuple->TupleData;
1137 if ((*p != 3) || (tuple->TupleDataLen < 6))
1138 return CS_BAD_TUPLE;
1139 config->last_idx = *(++p);
1141 config->base = le32_to_cpu(*(u_int *)p);
1142 config->subtuples = tuple->TupleDataLen - 6;
1146 static int parse_cftable_entry_cb(tuple_t *tuple,
1147 cistpl_cftable_entry_cb_t *entry)
1149 u_char *p, *q, features;
1151 p = tuple->TupleData;
1152 q = p + tuple->TupleDataLen;
1153 entry->index = *p & 0x3f;
1156 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1158 /* Process optional features */
1159 if (++p == q) return CS_BAD_TUPLE;
1163 if ((features & 3) > 0) {
1164 p = parse_power(p, q, &entry->vcc);
1165 if (p == NULL) return CS_BAD_TUPLE;
1167 entry->vcc.present = 0;
1168 if ((features & 3) > 1) {
1169 p = parse_power(p, q, &entry->vpp1);
1170 if (p == NULL) return CS_BAD_TUPLE;
1172 entry->vpp1.present = 0;
1173 if ((features & 3) > 2) {
1174 p = parse_power(p, q, &entry->vpp2);
1175 if (p == NULL) return CS_BAD_TUPLE;
1177 entry->vpp2.present = 0;
1179 /* I/O window options */
1180 if (features & 0x08) {
1181 if (p == q) return CS_BAD_TUPLE;
1182 entry->io = *p; p++;
1186 /* Interrupt options */
1187 if (features & 0x10) {
1188 p = parse_irq(p, q, &entry->irq);
1189 if (p == NULL) return CS_BAD_TUPLE;
1191 entry->irq.IRQInfo1 = 0;
1193 if (features & 0x20) {
1194 if (p == q) return CS_BAD_TUPLE;
1195 entry->mem = *p; p++;
1200 if (features & 0x80) {
1201 if (p == q) return CS_BAD_TUPLE;
1202 entry->flags |= (*p << 8);
1204 if (++p == q) return CS_BAD_TUPLE;
1205 entry->flags |= (*p << 16);
1208 if (++p == q) return CS_BAD_TUPLE;
1212 entry->subtuples = q-p;
1219 /*====================================================================*/
1221 static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo)
1226 p = (u_char *)tuple->TupleData;
1227 q = p + tuple->TupleDataLen;
1229 for (n = 0; n < CISTPL_MAX_DEVICES; n++) {
1231 geo->geo[n].buswidth = p[0];
1232 geo->geo[n].erase_block = 1 << (p[1]-1);
1233 geo->geo[n].read_block = 1 << (p[2]-1);
1234 geo->geo[n].write_block = 1 << (p[3]-1);
1235 geo->geo[n].partition = 1 << (p[4]-1);
1236 geo->geo[n].interleave = 1 << (p[5]-1);
1243 /*====================================================================*/
1245 static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2)
1249 if (tuple->TupleDataLen < 10)
1250 return CS_BAD_TUPLE;
1252 p = tuple->TupleData;
1253 q = p + tuple->TupleDataLen;
1257 v2->dindex = le16_to_cpu(*(u_short *)(p+2));
1262 return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL);
1265 /*====================================================================*/
1267 static int parse_org(tuple_t *tuple, cistpl_org_t *org)
1272 p = tuple->TupleData;
1273 q = p + tuple->TupleDataLen;
1274 if (p == q) return CS_BAD_TUPLE;
1276 if (++p == q) return CS_BAD_TUPLE;
1277 for (i = 0; i < 30; i++) {
1279 if (*p == '\0') break;
1280 if (++p == q) return CS_BAD_TUPLE;
1285 /*====================================================================*/
1287 static int parse_format(tuple_t *tuple, cistpl_format_t *fmt)
1291 if (tuple->TupleDataLen < 10)
1292 return CS_BAD_TUPLE;
1294 p = tuple->TupleData;
1298 fmt->offset = le32_to_cpu(*(u_int *)(p+2));
1299 fmt->length = le32_to_cpu(*(u_int *)(p+6));
1304 /*====================================================================*/
1306 int pccard_parse_tuple(tuple_t *tuple, cisparse_t *parse)
1308 int ret = CS_SUCCESS;
1310 if (tuple->TupleDataLen > tuple->TupleDataMax)
1311 return CS_BAD_TUPLE;
1312 switch (tuple->TupleCode) {
1314 case CISTPL_DEVICE_A:
1315 ret = parse_device(tuple, &parse->device);
1317 #ifdef CONFIG_CARDBUS
1319 ret = parse_bar(tuple, &parse->bar);
1321 case CISTPL_CONFIG_CB:
1322 ret = parse_config_cb(tuple, &parse->config);
1324 case CISTPL_CFTABLE_ENTRY_CB:
1325 ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb);
1328 case CISTPL_CHECKSUM:
1329 ret = parse_checksum(tuple, &parse->checksum);
1331 case CISTPL_LONGLINK_A:
1332 case CISTPL_LONGLINK_C:
1333 ret = parse_longlink(tuple, &parse->longlink);
1335 case CISTPL_LONGLINK_MFC:
1336 ret = parse_longlink_mfc(tuple, &parse->longlink_mfc);
1339 ret = parse_vers_1(tuple, &parse->version_1);
1342 ret = parse_altstr(tuple, &parse->altstr);
1344 case CISTPL_JEDEC_A:
1345 case CISTPL_JEDEC_C:
1346 ret = parse_jedec(tuple, &parse->jedec);
1349 ret = parse_manfid(tuple, &parse->manfid);
1352 ret = parse_funcid(tuple, &parse->funcid);
1355 ret = parse_funce(tuple, &parse->funce);
1358 ret = parse_config(tuple, &parse->config);
1360 case CISTPL_CFTABLE_ENTRY:
1361 ret = parse_cftable_entry(tuple, &parse->cftable_entry);
1363 case CISTPL_DEVICE_GEO:
1364 case CISTPL_DEVICE_GEO_A:
1365 ret = parse_device_geo(tuple, &parse->device_geo);
1368 ret = parse_vers_2(tuple, &parse->vers_2);
1371 ret = parse_org(tuple, &parse->org);
1374 case CISTPL_FORMAT_A:
1375 ret = parse_format(tuple, &parse->format);
1377 case CISTPL_NO_LINK:
1378 case CISTPL_LINKTARGET:
1382 ret = CS_UNSUPPORTED_FUNCTION;
1387 EXPORT_SYMBOL(pccard_parse_tuple);
1389 /*======================================================================
1391 This is used internally by Card Services to look up CIS stuff.
1393 ======================================================================*/
1395 int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse)
1401 buf = kmalloc(256, GFP_KERNEL);
1403 return CS_OUT_OF_RESOURCE;
1404 tuple.DesiredTuple = code;
1405 tuple.Attributes = TUPLE_RETURN_COMMON;
1406 ret = pccard_get_first_tuple(s, function, &tuple);
1407 if (ret != CS_SUCCESS) goto done;
1408 tuple.TupleData = buf;
1409 tuple.TupleOffset = 0;
1410 tuple.TupleDataMax = 255;
1411 ret = pccard_get_tuple_data(s, &tuple);
1412 if (ret != CS_SUCCESS) goto done;
1413 ret = pccard_parse_tuple(&tuple, parse);
1418 EXPORT_SYMBOL(pccard_read_tuple);
1420 /*======================================================================
1422 This tries to determine if a card has a sensible CIS. It returns
1423 the number of tuples in the CIS, or 0 if the CIS looks bad. The
1424 checks include making sure several critical tuples are present and
1425 valid; seeing if the total number of tuples is reasonable; and
1426 looking for tuples that use reserved codes.
1428 ======================================================================*/
1430 int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, cisinfo_t *info)
1434 int ret, reserved, dev_ok = 0, ident_ok = 0;
1437 return CS_BAD_HANDLE;
1439 tuple = kmalloc(sizeof(*tuple), GFP_KERNEL);
1441 return CS_OUT_OF_RESOURCE;
1442 p = kmalloc(sizeof(*p), GFP_KERNEL);
1445 return CS_OUT_OF_RESOURCE;
1448 info->Chains = reserved = 0;
1449 tuple->DesiredTuple = RETURN_FIRST_TUPLE;
1450 tuple->Attributes = TUPLE_RETURN_COMMON;
1451 ret = pccard_get_first_tuple(s, function, tuple);
1452 if (ret != CS_SUCCESS)
1455 /* First tuple should be DEVICE; we should really have either that
1456 or a CFTABLE_ENTRY of some sort */
1457 if ((tuple->TupleCode == CISTPL_DEVICE) ||
1458 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY, p) == CS_SUCCESS) ||
1459 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY_CB, p) == CS_SUCCESS))
1462 /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
1463 tuple, for card identification. Certain old D-Link and Linksys
1464 cards have only a broken VERS_2 tuple; hence the bogus test. */
1465 if ((pccard_read_tuple(s, function, CISTPL_MANFID, p) == CS_SUCCESS) ||
1466 (pccard_read_tuple(s, function, CISTPL_VERS_1, p) == CS_SUCCESS) ||
1467 (pccard_read_tuple(s, function, CISTPL_VERS_2, p) != CS_NO_MORE_ITEMS))
1470 if (!dev_ok && !ident_ok)
1473 for (info->Chains = 1; info->Chains < MAX_TUPLES; info->Chains++) {
1474 ret = pccard_get_next_tuple(s, function, tuple);
1475 if (ret != CS_SUCCESS) break;
1476 if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) ||
1477 ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) ||
1478 ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff)))
1481 if ((info->Chains == MAX_TUPLES) || (reserved > 5) ||
1482 ((!dev_ok || !ident_ok) && (info->Chains > 10)))
1490 EXPORT_SYMBOL(pccard_validate_cis);