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 = 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");
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 pcmcia_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, "pcmcia_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));
185 EXPORT_SYMBOL(pcmcia_read_cis_mem);
188 void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
189 u_int len, void *ptr)
191 void __iomem *sys, *end;
192 unsigned char *buf = ptr;
194 cs_dbg(s, 3, "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr, addr, len);
196 if (attr & IS_INDIRECT) {
197 /* Indirect accesses use a bunch of special registers at fixed
198 locations in common memory */
199 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
200 if (attr & IS_ATTR) {
202 flags = ICTRL0_AUTOINC;
205 sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
207 return; /* FIXME: Error */
209 writeb(flags, sys+CISREG_ICTRL0);
210 writeb(addr & 0xff, sys+CISREG_IADDR0);
211 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
212 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
213 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
214 for ( ; len > 0; len--, buf++)
215 writeb(*buf, sys+CISREG_IDATA0);
217 u_int inc = 1, card_offset, flags;
219 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
220 if (attr & IS_ATTR) {
226 card_offset = addr & ~(s->map_size-1);
228 sys = set_cis_map(s, card_offset, flags);
230 return; /* FIXME: error */
232 end = sys + s->map_size;
233 sys = sys + (addr & (s->map_size-1));
234 for ( ; len > 0; len--, buf++, sys += inc) {
239 card_offset += s->map_size;
244 EXPORT_SYMBOL(pcmcia_write_cis_mem);
247 /*======================================================================
249 This is a wrapper around read_cis_mem, with the same interface,
250 but which caches information, for cards whose CIS may not be
251 readable all the time.
253 ======================================================================*/
255 static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr,
256 u_int len, void *ptr)
258 struct cis_cache_entry *cis;
262 if (s->fake_cis_len > addr+len)
263 memcpy(ptr, s->fake_cis+addr, len);
265 memset(ptr, 0xff, len);
269 list_for_each_entry(cis, &s->cis_cache, node) {
270 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
271 memcpy(ptr, cis->cache, len);
276 #ifdef CONFIG_CARDBUS
277 if (s->state & SOCKET_CARDBUS)
278 ret = read_cb_mem(s, attr, addr, len, ptr);
281 ret = pcmcia_read_cis_mem(s, attr, addr, len, ptr);
284 /* Copy data into the cache */
285 cis = kmalloc(sizeof(struct cis_cache_entry) + len, GFP_KERNEL);
290 memcpy(cis->cache, ptr, len);
291 list_add(&cis->node, &s->cis_cache);
297 remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len)
299 struct cis_cache_entry *cis;
301 list_for_each_entry(cis, &s->cis_cache, node)
302 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
303 list_del(&cis->node);
309 void destroy_cis_cache(struct pcmcia_socket *s)
311 struct list_head *l, *n;
313 list_for_each_safe(l, n, &s->cis_cache) {
314 struct cis_cache_entry *cis = list_entry(l, struct cis_cache_entry, node);
316 list_del(&cis->node);
321 * If there was a fake CIS, destroy that as well.
328 EXPORT_SYMBOL(destroy_cis_cache);
330 /*======================================================================
332 This verifies if the CIS of a card matches what is in the CIS
335 ======================================================================*/
337 int verify_cis_cache(struct pcmcia_socket *s)
339 struct cis_cache_entry *cis;
342 buf = kmalloc(256, GFP_KERNEL);
345 list_for_each_entry(cis, &s->cis_cache, node) {
350 #ifdef CONFIG_CARDBUS
351 if (s->state & SOCKET_CARDBUS)
352 read_cb_mem(s, cis->attr, cis->addr, len, buf);
355 pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf);
357 if (memcmp(buf, cis->cache, len) != 0) {
366 /*======================================================================
368 For really bad cards, we provide a facility for uploading a
371 ======================================================================*/
373 int pcmcia_replace_cis(struct pcmcia_socket *s, cisdump_t *cis)
375 if (s->fake_cis != NULL) {
379 if (cis->Length > CISTPL_MAX_CIS_SIZE)
381 s->fake_cis = kmalloc(cis->Length, GFP_KERNEL);
382 if (s->fake_cis == NULL)
383 return CS_OUT_OF_RESOURCE;
384 s->fake_cis_len = cis->Length;
385 memcpy(s->fake_cis, cis->Data, cis->Length);
388 EXPORT_SYMBOL(pcmcia_replace_cis);
390 /*======================================================================
392 The high-level CIS tuple services
394 ======================================================================*/
396 typedef struct tuple_flags {
403 #define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space)
404 #define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link)
405 #define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn)
406 #define SPACE(f) (((tuple_flags *)(&(f)))->space)
408 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int func, tuple_t *tuple);
410 int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
413 return CS_BAD_HANDLE;
414 if (!(s->state & SOCKET_PRESENT))
416 tuple->TupleLink = tuple->Flags = 0;
417 #ifdef CONFIG_CARDBUS
418 if (s->state & SOCKET_CARDBUS) {
419 struct pci_dev *dev = s->cb_dev;
421 pci_bus_read_config_dword(dev->subordinate, 0, PCI_CARDBUS_CIS, &ptr);
422 tuple->CISOffset = ptr & ~7;
423 SPACE(tuple->Flags) = (ptr & 7);
427 /* Assume presence of a LONGLINK_C to address 0 */
428 tuple->CISOffset = tuple->LinkOffset = 0;
429 SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
431 if (!(s->state & SOCKET_CARDBUS) && (s->functions > 1) &&
432 !(tuple->Attributes & TUPLE_RETURN_COMMON)) {
433 cisdata_t req = tuple->DesiredTuple;
434 tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
435 if (pccard_get_next_tuple(s, function, tuple) == CS_SUCCESS) {
436 tuple->DesiredTuple = CISTPL_LINKTARGET;
437 if (pccard_get_next_tuple(s, function, tuple) != CS_SUCCESS)
438 return CS_NO_MORE_ITEMS;
440 tuple->CISOffset = tuple->TupleLink = 0;
441 tuple->DesiredTuple = req;
443 return pccard_get_next_tuple(s, function, tuple);
445 EXPORT_SYMBOL(pccard_get_first_tuple);
447 static int follow_link(struct pcmcia_socket *s, tuple_t *tuple)
452 if (MFC_FN(tuple->Flags)) {
453 /* Get indirect link from the MFC tuple */
454 read_cis_cache(s, LINK_SPACE(tuple->Flags),
455 tuple->LinkOffset, 5, link);
456 ofs = le32_to_cpu(*(u_int *)(link+1));
457 SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR);
458 /* Move to the next indirect link */
459 tuple->LinkOffset += 5;
460 MFC_FN(tuple->Flags)--;
461 } else if (HAS_LINK(tuple->Flags)) {
462 ofs = tuple->LinkOffset;
463 SPACE(tuple->Flags) = LINK_SPACE(tuple->Flags);
464 HAS_LINK(tuple->Flags) = 0;
468 if (!(s->state & SOCKET_CARDBUS) && SPACE(tuple->Flags)) {
469 /* This is ugly, but a common CIS error is to code the long
470 link offset incorrectly, so we check the right spot... */
471 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
472 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
473 (strncmp(link+2, "CIS", 3) == 0))
475 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
476 /* Then, we try the wrong 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);
487 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
493 return CS_BAD_HANDLE;
494 if (!(s->state & SOCKET_PRESENT))
497 link[1] = tuple->TupleLink;
498 ofs = tuple->CISOffset + tuple->TupleLink;
499 attr = SPACE(tuple->Flags);
501 for (i = 0; i < MAX_TUPLES; i++) {
502 if (link[1] == 0xff) {
503 link[0] = CISTPL_END;
505 read_cis_cache(s, attr, ofs, 2, link);
506 if (link[0] == CISTPL_NULL) {
511 /* End of chain? Follow long link if possible */
512 if (link[0] == CISTPL_END) {
513 if ((ofs = follow_link(s, tuple)) < 0)
514 return CS_NO_MORE_ITEMS;
515 attr = SPACE(tuple->Flags);
516 read_cis_cache(s, attr, ofs, 2, link);
519 /* Is this a link tuple? Make a note of it */
520 if ((link[0] == CISTPL_LONGLINK_A) ||
521 (link[0] == CISTPL_LONGLINK_C) ||
522 (link[0] == CISTPL_LONGLINK_MFC) ||
523 (link[0] == CISTPL_LINKTARGET) ||
524 (link[0] == CISTPL_INDIRECT) ||
525 (link[0] == CISTPL_NO_LINK)) {
527 case CISTPL_LONGLINK_A:
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_LONGLINK_C:
533 HAS_LINK(tuple->Flags) = 1;
534 LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR;
535 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
537 case CISTPL_INDIRECT:
538 HAS_LINK(tuple->Flags) = 1;
539 LINK_SPACE(tuple->Flags) = IS_ATTR | IS_INDIRECT;
540 tuple->LinkOffset = 0;
542 case CISTPL_LONGLINK_MFC:
543 tuple->LinkOffset = ofs + 3;
544 LINK_SPACE(tuple->Flags) = attr;
545 if (function == BIND_FN_ALL) {
546 /* Follow all the MFC links */
547 read_cis_cache(s, attr, ofs+2, 1, &tmp);
548 MFC_FN(tuple->Flags) = tmp;
550 /* Follow exactly one of the links */
551 MFC_FN(tuple->Flags) = 1;
552 tuple->LinkOffset += function * 5;
556 HAS_LINK(tuple->Flags) = 0;
559 if ((tuple->Attributes & TUPLE_RETURN_LINK) &&
560 (tuple->DesiredTuple == RETURN_FIRST_TUPLE))
563 if (tuple->DesiredTuple == RETURN_FIRST_TUPLE)
566 if (link[0] == tuple->DesiredTuple)
570 if (i == MAX_TUPLES) {
571 cs_dbg(s, 1, "cs: overrun in pcmcia_get_next_tuple\n");
572 return CS_NO_MORE_ITEMS;
575 tuple->TupleCode = link[0];
576 tuple->TupleLink = link[1];
577 tuple->CISOffset = ofs + 2;
580 EXPORT_SYMBOL(pccard_get_next_tuple);
582 /*====================================================================*/
584 #define _MIN(a, b) (((a) < (b)) ? (a) : (b))
586 int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple)
591 return CS_BAD_HANDLE;
593 if (tuple->TupleLink < tuple->TupleOffset)
594 return CS_NO_MORE_ITEMS;
595 len = tuple->TupleLink - tuple->TupleOffset;
596 tuple->TupleDataLen = tuple->TupleLink;
599 read_cis_cache(s, SPACE(tuple->Flags),
600 tuple->CISOffset + tuple->TupleOffset,
601 _MIN(len, tuple->TupleDataMax), tuple->TupleData);
604 EXPORT_SYMBOL(pccard_get_tuple_data);
607 /*======================================================================
609 Parsing routines for individual tuples
611 ======================================================================*/
613 static int parse_device(tuple_t *tuple, cistpl_device_t *device)
619 p = (u_char *)tuple->TupleData;
620 q = p + tuple->TupleDataLen;
623 for (i = 0; i < CISTPL_MAX_DEVICES; i++) {
625 if (*p == 0xff) break;
626 device->dev[i].type = (*p >> 4);
627 device->dev[i].wp = (*p & 0x08) ? 1 : 0;
629 case 0: device->dev[i].speed = 0; break;
630 case 1: device->dev[i].speed = 250; break;
631 case 2: device->dev[i].speed = 200; break;
632 case 3: device->dev[i].speed = 150; break;
633 case 4: device->dev[i].speed = 100; break;
635 if (++p == q) return CS_BAD_TUPLE;
636 device->dev[i].speed = SPEED_CVT(*p);
638 if (++p == q) return CS_BAD_TUPLE;
644 if (++p == q) return CS_BAD_TUPLE;
645 if (*p == 0xff) break;
647 if (scale == 7) return CS_BAD_TUPLE;
648 device->dev[i].size = ((*p >> 3) + 1) * (512 << (scale*2));
656 /*====================================================================*/
658 static int parse_checksum(tuple_t *tuple, cistpl_checksum_t *csum)
661 if (tuple->TupleDataLen < 5)
663 p = (u_char *)tuple->TupleData;
664 csum->addr = tuple->CISOffset+(short)le16_to_cpu(*(u_short *)p)-2;
665 csum->len = le16_to_cpu(*(u_short *)(p + 2));
670 /*====================================================================*/
672 static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link)
674 if (tuple->TupleDataLen < 4)
676 link->addr = le32_to_cpu(*(u_int *)tuple->TupleData);
680 /*====================================================================*/
682 static int parse_longlink_mfc(tuple_t *tuple,
683 cistpl_longlink_mfc_t *link)
688 p = (u_char *)tuple->TupleData;
691 if (tuple->TupleDataLen <= link->nfn*5)
693 for (i = 0; i < link->nfn; i++) {
694 link->fn[i].space = *p; p++;
695 link->fn[i].addr = le32_to_cpu(*(u_int *)p); p += 4;
700 /*====================================================================*/
702 static int parse_strings(u_char *p, u_char *q, int max,
703 char *s, u_char *ofs, u_char *found)
707 if (p == q) return CS_BAD_TUPLE;
709 for (i = 0; i < max; i++) {
710 if (*p == 0xff) break;
714 s[j++] = (*p == 0xff) ? '\0' : *p;
715 if ((*p == '\0') || (*p == 0xff)) break;
716 if (++p == q) return CS_BAD_TUPLE;
718 if ((*p == 0xff) || (++p == q)) break;
724 return (ns == max) ? CS_SUCCESS : CS_BAD_TUPLE;
728 /*====================================================================*/
730 static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1)
734 p = (u_char *)tuple->TupleData;
735 q = p + tuple->TupleDataLen;
737 vers_1->major = *p; p++;
738 vers_1->minor = *p; p++;
739 if (p >= q) return CS_BAD_TUPLE;
741 return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS,
742 vers_1->str, vers_1->ofs, &vers_1->ns);
745 /*====================================================================*/
747 static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr)
751 p = (u_char *)tuple->TupleData;
752 q = p + tuple->TupleDataLen;
754 return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS,
755 altstr->str, altstr->ofs, &altstr->ns);
758 /*====================================================================*/
760 static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec)
765 p = (u_char *)tuple->TupleData;
766 q = p + tuple->TupleDataLen;
768 for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) {
770 jedec->id[nid].mfr = p[0];
771 jedec->id[nid].info = p[1];
778 /*====================================================================*/
780 static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m)
783 if (tuple->TupleDataLen < 4)
785 p = (u_short *)tuple->TupleData;
786 m->manf = le16_to_cpu(p[0]);
787 m->card = le16_to_cpu(p[1]);
791 /*====================================================================*/
793 static int parse_funcid(tuple_t *tuple, cistpl_funcid_t *f)
796 if (tuple->TupleDataLen < 2)
798 p = (u_char *)tuple->TupleData;
804 /*====================================================================*/
806 static int parse_funce(tuple_t *tuple, cistpl_funce_t *f)
810 if (tuple->TupleDataLen < 1)
812 p = (u_char *)tuple->TupleData;
814 for (i = 1; i < tuple->TupleDataLen; i++)
819 /*====================================================================*/
821 static int parse_config(tuple_t *tuple, cistpl_config_t *config)
826 p = (u_char *)tuple->TupleData;
828 rmsz = (*p & 0x3c) >> 2;
829 if (tuple->TupleDataLen < rasz+rmsz+4)
831 config->last_idx = *(++p);
834 for (i = 0; i <= rasz; i++)
835 config->base += p[i] << (8*i);
837 for (i = 0; i < 4; i++)
838 config->rmask[i] = 0;
839 for (i = 0; i <= rmsz; i++)
840 config->rmask[i>>2] += p[i] << (8*(i%4));
841 config->subtuples = tuple->TupleDataLen - (rasz+rmsz+4);
845 /*======================================================================
847 The following routines are all used to parse the nightmarish
848 config table entries.
850 ======================================================================*/
852 static u_char *parse_power(u_char *p, u_char *q,
858 if (p == q) return NULL;
862 for (i = 0; i < 7; i++)
863 if (pwr->present & (1<<i)) {
864 if (p == q) return NULL;
865 pwr->param[i] = POWER_CVT(*p);
866 scale = POWER_SCALE(*p);
868 if (++p == q) return NULL;
869 if ((*p & 0x7f) < 100)
870 pwr->param[i] += (*p & 0x7f) * scale / 100;
872 pwr->flags |= CISTPL_POWER_HIGHZ_OK;
876 pwr->flags |= CISTPL_POWER_HIGHZ_REQ;
885 /*====================================================================*/
887 static u_char *parse_timing(u_char *p, u_char *q,
888 cistpl_timing_t *timing)
892 if (p == q) return NULL;
894 if ((scale & 3) != 3) {
895 if (++p == q) return NULL;
896 timing->wait = SPEED_CVT(*p);
897 timing->waitscale = exponent[scale & 3];
901 if ((scale & 7) != 7) {
902 if (++p == q) return NULL;
903 timing->ready = SPEED_CVT(*p);
904 timing->rdyscale = exponent[scale & 7];
909 if (++p == q) return NULL;
910 timing->reserved = SPEED_CVT(*p);
911 timing->rsvscale = exponent[scale];
913 timing->reserved = 0;
918 /*====================================================================*/
920 static u_char *parse_io(u_char *p, u_char *q, cistpl_io_t *io)
924 if (p == q) return NULL;
930 io->win[0].len = (1 << (io->flags & CISTPL_IO_LINES_MASK));
934 if (++p == q) return NULL;
935 io->nwin = (*p & 0x0f) + 1;
936 bsz = (*p & 0x30) >> 4;
938 lsz = (*p & 0xc0) >> 6;
942 for (i = 0; i < io->nwin; i++) {
945 for (j = 0; j < bsz; j++, p++) {
946 if (p == q) return NULL;
947 io->win[i].base += *p << (j*8);
949 for (j = 0; j < lsz; j++, p++) {
950 if (p == q) return NULL;
951 io->win[i].len += *p << (j*8);
957 /*====================================================================*/
959 static u_char *parse_mem(u_char *p, u_char *q, cistpl_mem_t *mem)
961 int i, j, asz, lsz, has_ha;
964 if (p == q) return NULL;
966 mem->nwin = (*p & 0x07) + 1;
967 lsz = (*p & 0x18) >> 3;
968 asz = (*p & 0x60) >> 5;
969 has_ha = (*p & 0x80);
970 if (++p == q) return NULL;
972 for (i = 0; i < mem->nwin; i++) {
974 for (j = 0; j < lsz; j++, p++) {
975 if (p == q) return NULL;
978 for (j = 0; j < asz; j++, p++) {
979 if (p == q) return NULL;
983 for (j = 0; j < asz; j++, p++) {
984 if (p == q) return NULL;
987 mem->win[i].len = len << 8;
988 mem->win[i].card_addr = ca << 8;
989 mem->win[i].host_addr = ha << 8;
994 /*====================================================================*/
996 static u_char *parse_irq(u_char *p, u_char *q, cistpl_irq_t *irq)
998 if (p == q) return NULL;
999 irq->IRQInfo1 = *p; p++;
1000 if (irq->IRQInfo1 & IRQ_INFO2_VALID) {
1001 if (p+2 > q) return NULL;
1002 irq->IRQInfo2 = (p[1]<<8) + p[0];
1008 /*====================================================================*/
1010 static int parse_cftable_entry(tuple_t *tuple,
1011 cistpl_cftable_entry_t *entry)
1013 u_char *p, *q, features;
1015 p = tuple->TupleData;
1016 q = p + tuple->TupleDataLen;
1017 entry->index = *p & 0x3f;
1020 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1022 if (++p == q) return CS_BAD_TUPLE;
1024 entry->flags |= CISTPL_CFTABLE_BVDS;
1026 entry->flags |= CISTPL_CFTABLE_WP;
1028 entry->flags |= CISTPL_CFTABLE_RDYBSY;
1030 entry->flags |= CISTPL_CFTABLE_MWAIT;
1031 entry->interface = *p & 0x0f;
1033 entry->interface = 0;
1035 /* Process optional features */
1036 if (++p == q) return CS_BAD_TUPLE;
1040 if ((features & 3) > 0) {
1041 p = parse_power(p, q, &entry->vcc);
1042 if (p == NULL) return CS_BAD_TUPLE;
1044 entry->vcc.present = 0;
1045 if ((features & 3) > 1) {
1046 p = parse_power(p, q, &entry->vpp1);
1047 if (p == NULL) return CS_BAD_TUPLE;
1049 entry->vpp1.present = 0;
1050 if ((features & 3) > 2) {
1051 p = parse_power(p, q, &entry->vpp2);
1052 if (p == NULL) return CS_BAD_TUPLE;
1054 entry->vpp2.present = 0;
1056 /* Timing options */
1057 if (features & 0x04) {
1058 p = parse_timing(p, q, &entry->timing);
1059 if (p == NULL) return CS_BAD_TUPLE;
1061 entry->timing.wait = 0;
1062 entry->timing.ready = 0;
1063 entry->timing.reserved = 0;
1066 /* I/O window options */
1067 if (features & 0x08) {
1068 p = parse_io(p, q, &entry->io);
1069 if (p == NULL) return CS_BAD_TUPLE;
1073 /* Interrupt options */
1074 if (features & 0x10) {
1075 p = parse_irq(p, q, &entry->irq);
1076 if (p == NULL) return CS_BAD_TUPLE;
1078 entry->irq.IRQInfo1 = 0;
1080 switch (features & 0x60) {
1082 entry->mem.nwin = 0;
1085 entry->mem.nwin = 1;
1086 entry->mem.win[0].len = le16_to_cpu(*(u_short *)p) << 8;
1087 entry->mem.win[0].card_addr = 0;
1088 entry->mem.win[0].host_addr = 0;
1090 if (p > q) return CS_BAD_TUPLE;
1093 entry->mem.nwin = 1;
1094 entry->mem.win[0].len = le16_to_cpu(*(u_short *)p) << 8;
1095 entry->mem.win[0].card_addr =
1096 le16_to_cpu(*(u_short *)(p+2)) << 8;
1097 entry->mem.win[0].host_addr = 0;
1099 if (p > q) return CS_BAD_TUPLE;
1102 p = parse_mem(p, q, &entry->mem);
1103 if (p == NULL) return CS_BAD_TUPLE;
1108 if (features & 0x80) {
1109 if (p == q) return CS_BAD_TUPLE;
1110 entry->flags |= (*p << 8);
1112 if (++p == q) return CS_BAD_TUPLE;
1116 entry->subtuples = q-p;
1121 /*====================================================================*/
1123 #ifdef CONFIG_CARDBUS
1125 static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar)
1128 if (tuple->TupleDataLen < 6)
1129 return CS_BAD_TUPLE;
1130 p = (u_char *)tuple->TupleData;
1133 bar->size = le32_to_cpu(*(u_int *)p);
1137 static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config)
1141 p = (u_char *)tuple->TupleData;
1142 if ((*p != 3) || (tuple->TupleDataLen < 6))
1143 return CS_BAD_TUPLE;
1144 config->last_idx = *(++p);
1146 config->base = le32_to_cpu(*(u_int *)p);
1147 config->subtuples = tuple->TupleDataLen - 6;
1151 static int parse_cftable_entry_cb(tuple_t *tuple,
1152 cistpl_cftable_entry_cb_t *entry)
1154 u_char *p, *q, features;
1156 p = tuple->TupleData;
1157 q = p + tuple->TupleDataLen;
1158 entry->index = *p & 0x3f;
1161 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1163 /* Process optional features */
1164 if (++p == q) return CS_BAD_TUPLE;
1168 if ((features & 3) > 0) {
1169 p = parse_power(p, q, &entry->vcc);
1170 if (p == NULL) return CS_BAD_TUPLE;
1172 entry->vcc.present = 0;
1173 if ((features & 3) > 1) {
1174 p = parse_power(p, q, &entry->vpp1);
1175 if (p == NULL) return CS_BAD_TUPLE;
1177 entry->vpp1.present = 0;
1178 if ((features & 3) > 2) {
1179 p = parse_power(p, q, &entry->vpp2);
1180 if (p == NULL) return CS_BAD_TUPLE;
1182 entry->vpp2.present = 0;
1184 /* I/O window options */
1185 if (features & 0x08) {
1186 if (p == q) return CS_BAD_TUPLE;
1187 entry->io = *p; p++;
1191 /* Interrupt options */
1192 if (features & 0x10) {
1193 p = parse_irq(p, q, &entry->irq);
1194 if (p == NULL) return CS_BAD_TUPLE;
1196 entry->irq.IRQInfo1 = 0;
1198 if (features & 0x20) {
1199 if (p == q) return CS_BAD_TUPLE;
1200 entry->mem = *p; p++;
1205 if (features & 0x80) {
1206 if (p == q) return CS_BAD_TUPLE;
1207 entry->flags |= (*p << 8);
1209 if (++p == q) return CS_BAD_TUPLE;
1210 entry->flags |= (*p << 16);
1213 if (++p == q) return CS_BAD_TUPLE;
1217 entry->subtuples = q-p;
1224 /*====================================================================*/
1226 static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo)
1231 p = (u_char *)tuple->TupleData;
1232 q = p + tuple->TupleDataLen;
1234 for (n = 0; n < CISTPL_MAX_DEVICES; n++) {
1236 geo->geo[n].buswidth = p[0];
1237 geo->geo[n].erase_block = 1 << (p[1]-1);
1238 geo->geo[n].read_block = 1 << (p[2]-1);
1239 geo->geo[n].write_block = 1 << (p[3]-1);
1240 geo->geo[n].partition = 1 << (p[4]-1);
1241 geo->geo[n].interleave = 1 << (p[5]-1);
1248 /*====================================================================*/
1250 static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2)
1254 if (tuple->TupleDataLen < 10)
1255 return CS_BAD_TUPLE;
1257 p = tuple->TupleData;
1258 q = p + tuple->TupleDataLen;
1262 v2->dindex = le16_to_cpu(*(u_short *)(p+2));
1267 return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL);
1270 /*====================================================================*/
1272 static int parse_org(tuple_t *tuple, cistpl_org_t *org)
1277 p = tuple->TupleData;
1278 q = p + tuple->TupleDataLen;
1279 if (p == q) return CS_BAD_TUPLE;
1281 if (++p == q) return CS_BAD_TUPLE;
1282 for (i = 0; i < 30; i++) {
1284 if (*p == '\0') break;
1285 if (++p == q) return CS_BAD_TUPLE;
1290 /*====================================================================*/
1292 static int parse_format(tuple_t *tuple, cistpl_format_t *fmt)
1296 if (tuple->TupleDataLen < 10)
1297 return CS_BAD_TUPLE;
1299 p = tuple->TupleData;
1303 fmt->offset = le32_to_cpu(*(u_int *)(p+2));
1304 fmt->length = le32_to_cpu(*(u_int *)(p+6));
1309 /*====================================================================*/
1311 int pccard_parse_tuple(tuple_t *tuple, cisparse_t *parse)
1313 int ret = CS_SUCCESS;
1315 if (tuple->TupleDataLen > tuple->TupleDataMax)
1316 return CS_BAD_TUPLE;
1317 switch (tuple->TupleCode) {
1319 case CISTPL_DEVICE_A:
1320 ret = parse_device(tuple, &parse->device);
1322 #ifdef CONFIG_CARDBUS
1324 ret = parse_bar(tuple, &parse->bar);
1326 case CISTPL_CONFIG_CB:
1327 ret = parse_config_cb(tuple, &parse->config);
1329 case CISTPL_CFTABLE_ENTRY_CB:
1330 ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb);
1333 case CISTPL_CHECKSUM:
1334 ret = parse_checksum(tuple, &parse->checksum);
1336 case CISTPL_LONGLINK_A:
1337 case CISTPL_LONGLINK_C:
1338 ret = parse_longlink(tuple, &parse->longlink);
1340 case CISTPL_LONGLINK_MFC:
1341 ret = parse_longlink_mfc(tuple, &parse->longlink_mfc);
1344 ret = parse_vers_1(tuple, &parse->version_1);
1347 ret = parse_altstr(tuple, &parse->altstr);
1349 case CISTPL_JEDEC_A:
1350 case CISTPL_JEDEC_C:
1351 ret = parse_jedec(tuple, &parse->jedec);
1354 ret = parse_manfid(tuple, &parse->manfid);
1357 ret = parse_funcid(tuple, &parse->funcid);
1360 ret = parse_funce(tuple, &parse->funce);
1363 ret = parse_config(tuple, &parse->config);
1365 case CISTPL_CFTABLE_ENTRY:
1366 ret = parse_cftable_entry(tuple, &parse->cftable_entry);
1368 case CISTPL_DEVICE_GEO:
1369 case CISTPL_DEVICE_GEO_A:
1370 ret = parse_device_geo(tuple, &parse->device_geo);
1373 ret = parse_vers_2(tuple, &parse->vers_2);
1376 ret = parse_org(tuple, &parse->org);
1379 case CISTPL_FORMAT_A:
1380 ret = parse_format(tuple, &parse->format);
1382 case CISTPL_NO_LINK:
1383 case CISTPL_LINKTARGET:
1387 ret = CS_UNSUPPORTED_FUNCTION;
1392 EXPORT_SYMBOL(pccard_parse_tuple);
1394 /*======================================================================
1396 This is used internally by Card Services to look up CIS stuff.
1398 ======================================================================*/
1400 int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse)
1406 buf = kmalloc(256, GFP_KERNEL);
1408 return CS_OUT_OF_RESOURCE;
1409 tuple.DesiredTuple = code;
1410 tuple.Attributes = TUPLE_RETURN_COMMON;
1411 ret = pccard_get_first_tuple(s, function, &tuple);
1412 if (ret != CS_SUCCESS) goto done;
1413 tuple.TupleData = buf;
1414 tuple.TupleOffset = 0;
1415 tuple.TupleDataMax = 255;
1416 ret = pccard_get_tuple_data(s, &tuple);
1417 if (ret != CS_SUCCESS) goto done;
1418 ret = pccard_parse_tuple(&tuple, parse);
1423 EXPORT_SYMBOL(pccard_read_tuple);
1425 /*======================================================================
1427 This tries to determine if a card has a sensible CIS. It returns
1428 the number of tuples in the CIS, or 0 if the CIS looks bad. The
1429 checks include making sure several critical tuples are present and
1430 valid; seeing if the total number of tuples is reasonable; and
1431 looking for tuples that use reserved codes.
1433 ======================================================================*/
1435 int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, cisinfo_t *info)
1439 int ret, reserved, dev_ok = 0, ident_ok = 0;
1442 return CS_BAD_HANDLE;
1444 tuple = kmalloc(sizeof(*tuple), GFP_KERNEL);
1446 return CS_OUT_OF_RESOURCE;
1447 p = kmalloc(sizeof(*p), GFP_KERNEL);
1450 return CS_OUT_OF_RESOURCE;
1453 info->Chains = reserved = 0;
1454 tuple->DesiredTuple = RETURN_FIRST_TUPLE;
1455 tuple->Attributes = TUPLE_RETURN_COMMON;
1456 ret = pccard_get_first_tuple(s, function, tuple);
1457 if (ret != CS_SUCCESS)
1460 /* First tuple should be DEVICE; we should really have either that
1461 or a CFTABLE_ENTRY of some sort */
1462 if ((tuple->TupleCode == CISTPL_DEVICE) ||
1463 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY, p) == CS_SUCCESS) ||
1464 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY_CB, p) == CS_SUCCESS))
1467 /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
1468 tuple, for card identification. Certain old D-Link and Linksys
1469 cards have only a broken VERS_2 tuple; hence the bogus test. */
1470 if ((pccard_read_tuple(s, function, CISTPL_MANFID, p) == CS_SUCCESS) ||
1471 (pccard_read_tuple(s, function, CISTPL_VERS_1, p) == CS_SUCCESS) ||
1472 (pccard_read_tuple(s, function, CISTPL_VERS_2, p) != CS_NO_MORE_ITEMS))
1475 if (!dev_ok && !ident_ok)
1478 for (info->Chains = 1; info->Chains < MAX_TUPLES; info->Chains++) {
1479 ret = pccard_get_next_tuple(s, function, tuple);
1480 if (ret != CS_SUCCESS) break;
1481 if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) ||
1482 ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) ||
1483 ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff)))
1486 if ((info->Chains == MAX_TUPLES) || (reserved > 5) ||
1487 ((!dev_ok || !ident_ok) && (info->Chains > 10)))
1495 EXPORT_SYMBOL(pccard_validate_cis);