2 * cistpl.c -- 16-bit PCMCIA Card Information Structure parser
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
8 * The initial developer of the original code is David A. Hinds
9 * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
10 * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
12 * (C) 1999 David A. Hinds
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/kernel.h>
18 #include <linux/string.h>
19 #include <linux/major.h>
20 #include <linux/errno.h>
21 #include <linux/timer.h>
22 #include <linux/slab.h>
24 #include <linux/pci.h>
25 #include <linux/ioport.h>
27 #include <asm/byteorder.h>
28 #include <asm/unaligned.h>
30 #include <pcmcia/cs_types.h>
31 #include <pcmcia/ss.h>
32 #include <pcmcia/cs.h>
33 #include <pcmcia/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 dev_printk(KERN_NOTICE, &s->dev,
96 "cs: unable to map card memory!\n");
102 if (!(s->features & SS_CAP_STATIC_MAP) && (!s->cis_virt))
103 s->cis_virt = ioremap(mem->res->start, s->map_size);
105 mem->card_start = card_offset;
108 ret = s->ops->set_mem_map(s, mem);
110 iounmap(s->cis_virt);
115 if (s->features & SS_CAP_STATIC_MAP) {
117 iounmap(s->cis_virt);
118 s->cis_virt = ioremap(mem->static_start, s->map_size);
124 /*======================================================================
126 Low-level functions to read and write CIS memory. I think the
127 write routine is only useful for writing one-byte registers.
129 ======================================================================*/
131 /* Bits in attr field */
133 #define IS_INDIRECT 8
135 int pcmcia_read_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
136 u_int len, void *ptr)
138 void __iomem *sys, *end;
139 unsigned char *buf = ptr;
141 cs_dbg(s, 3, "pcmcia_read_cis_mem(%d, %#x, %u)\n", attr, addr, len);
143 if (attr & IS_INDIRECT) {
144 /* Indirect accesses use a bunch of special registers at fixed
145 locations in common memory */
146 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
147 if (attr & IS_ATTR) {
149 flags = ICTRL0_AUTOINC;
152 sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
154 memset(ptr, 0xff, len);
158 writeb(flags, sys+CISREG_ICTRL0);
159 writeb(addr & 0xff, sys+CISREG_IADDR0);
160 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
161 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
162 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
163 for ( ; len > 0; len--, buf++)
164 *buf = readb(sys+CISREG_IDATA0);
166 u_int inc = 1, card_offset, flags;
168 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
175 card_offset = addr & ~(s->map_size-1);
177 sys = set_cis_map(s, card_offset, flags);
179 memset(ptr, 0xff, len);
182 end = sys + s->map_size;
183 sys = sys + (addr & (s->map_size-1));
184 for ( ; len > 0; len--, buf++, sys += inc) {
189 card_offset += s->map_size;
193 cs_dbg(s, 3, " %#2.2x %#2.2x %#2.2x %#2.2x ...\n",
194 *(u_char *)(ptr+0), *(u_char *)(ptr+1),
195 *(u_char *)(ptr+2), *(u_char *)(ptr+3));
198 EXPORT_SYMBOL(pcmcia_read_cis_mem);
201 void pcmcia_write_cis_mem(struct pcmcia_socket *s, int attr, u_int addr,
202 u_int len, void *ptr)
204 void __iomem *sys, *end;
205 unsigned char *buf = ptr;
207 cs_dbg(s, 3, "pcmcia_write_cis_mem(%d, %#x, %u)\n", attr, addr, len);
209 if (attr & IS_INDIRECT) {
210 /* Indirect accesses use a bunch of special registers at fixed
211 locations in common memory */
212 u_char flags = ICTRL0_COMMON|ICTRL0_AUTOINC|ICTRL0_BYTEGRAN;
213 if (attr & IS_ATTR) {
215 flags = ICTRL0_AUTOINC;
218 sys = set_cis_map(s, 0, MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0));
220 return; /* FIXME: Error */
222 writeb(flags, sys+CISREG_ICTRL0);
223 writeb(addr & 0xff, sys+CISREG_IADDR0);
224 writeb((addr>>8) & 0xff, sys+CISREG_IADDR1);
225 writeb((addr>>16) & 0xff, sys+CISREG_IADDR2);
226 writeb((addr>>24) & 0xff, sys+CISREG_IADDR3);
227 for ( ; len > 0; len--, buf++)
228 writeb(*buf, sys+CISREG_IDATA0);
230 u_int inc = 1, card_offset, flags;
232 flags = MAP_ACTIVE | ((cis_width) ? MAP_16BIT : 0);
233 if (attr & IS_ATTR) {
239 card_offset = addr & ~(s->map_size-1);
241 sys = set_cis_map(s, card_offset, flags);
243 return; /* FIXME: error */
245 end = sys + s->map_size;
246 sys = sys + (addr & (s->map_size-1));
247 for ( ; len > 0; len--, buf++, sys += inc) {
252 card_offset += s->map_size;
257 EXPORT_SYMBOL(pcmcia_write_cis_mem);
260 /*======================================================================
262 This is a wrapper around read_cis_mem, with the same interface,
263 but which caches information, for cards whose CIS may not be
264 readable all the time.
266 ======================================================================*/
268 static void read_cis_cache(struct pcmcia_socket *s, int attr, u_int addr,
269 size_t len, void *ptr)
271 struct cis_cache_entry *cis;
275 if (s->fake_cis_len >= addr+len)
276 memcpy(ptr, s->fake_cis+addr, len);
278 memset(ptr, 0xff, len);
282 list_for_each_entry(cis, &s->cis_cache, node) {
283 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
284 memcpy(ptr, cis->cache, len);
289 #ifdef CONFIG_CARDBUS
290 if (s->state & SOCKET_CARDBUS)
291 ret = read_cb_mem(s, attr, addr, len, ptr);
294 ret = pcmcia_read_cis_mem(s, attr, addr, len, ptr);
297 /* Copy data into the cache */
298 cis = kmalloc(sizeof(struct cis_cache_entry) + len, GFP_KERNEL);
303 memcpy(cis->cache, ptr, len);
304 list_add(&cis->node, &s->cis_cache);
310 remove_cis_cache(struct pcmcia_socket *s, int attr, u_int addr, u_int len)
312 struct cis_cache_entry *cis;
314 list_for_each_entry(cis, &s->cis_cache, node)
315 if (cis->addr == addr && cis->len == len && cis->attr == attr) {
316 list_del(&cis->node);
322 void destroy_cis_cache(struct pcmcia_socket *s)
324 struct list_head *l, *n;
326 list_for_each_safe(l, n, &s->cis_cache) {
327 struct cis_cache_entry *cis = list_entry(l, struct cis_cache_entry, node);
329 list_del(&cis->node);
334 * If there was a fake CIS, destroy that as well.
339 EXPORT_SYMBOL(destroy_cis_cache);
341 /*======================================================================
343 This verifies if the CIS of a card matches what is in the CIS
346 ======================================================================*/
348 int verify_cis_cache(struct pcmcia_socket *s)
350 struct cis_cache_entry *cis;
353 buf = kmalloc(256, GFP_KERNEL);
355 dev_printk(KERN_WARNING, &s->dev,
356 "no memory for verifying CIS\n");
358 list_for_each_entry(cis, &s->cis_cache, node) {
363 #ifdef CONFIG_CARDBUS
364 if (s->state & SOCKET_CARDBUS)
365 read_cb_mem(s, cis->attr, cis->addr, len, buf);
368 pcmcia_read_cis_mem(s, cis->attr, cis->addr, len, buf);
370 if (memcmp(buf, cis->cache, len) != 0) {
379 /*======================================================================
381 For really bad cards, we provide a facility for uploading a
384 ======================================================================*/
386 int pcmcia_replace_cis(struct pcmcia_socket *s,
387 const u8 *data, const size_t len)
389 if (len > CISTPL_MAX_CIS_SIZE) {
390 dev_printk(KERN_WARNING, &s->dev, "replacement CIS too big\n");
394 s->fake_cis = kmalloc(len, GFP_KERNEL);
395 if (s->fake_cis == NULL) {
396 dev_printk(KERN_WARNING, &s->dev, "no memory to replace CIS\n");
399 s->fake_cis_len = len;
400 memcpy(s->fake_cis, data, len);
403 EXPORT_SYMBOL(pcmcia_replace_cis);
405 /*======================================================================
407 The high-level CIS tuple services
409 ======================================================================*/
411 typedef struct tuple_flags {
418 #define LINK_SPACE(f) (((tuple_flags *)(&(f)))->link_space)
419 #define HAS_LINK(f) (((tuple_flags *)(&(f)))->has_link)
420 #define MFC_FN(f) (((tuple_flags *)(&(f)))->mfc_fn)
421 #define SPACE(f) (((tuple_flags *)(&(f)))->space)
423 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int func, tuple_t *tuple);
425 int pccard_get_first_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
429 if (!(s->state & SOCKET_PRESENT))
431 tuple->TupleLink = tuple->Flags = 0;
432 #ifdef CONFIG_CARDBUS
433 if (s->state & SOCKET_CARDBUS) {
434 struct pci_dev *dev = s->cb_dev;
436 pci_bus_read_config_dword(dev->subordinate, 0, PCI_CARDBUS_CIS, &ptr);
437 tuple->CISOffset = ptr & ~7;
438 SPACE(tuple->Flags) = (ptr & 7);
442 /* Assume presence of a LONGLINK_C to address 0 */
443 tuple->CISOffset = tuple->LinkOffset = 0;
444 SPACE(tuple->Flags) = HAS_LINK(tuple->Flags) = 1;
446 if (!(s->state & SOCKET_CARDBUS) && (s->functions > 1) &&
447 !(tuple->Attributes & TUPLE_RETURN_COMMON)) {
448 cisdata_t req = tuple->DesiredTuple;
449 tuple->DesiredTuple = CISTPL_LONGLINK_MFC;
450 if (pccard_get_next_tuple(s, function, tuple) == 0) {
451 tuple->DesiredTuple = CISTPL_LINKTARGET;
452 if (pccard_get_next_tuple(s, function, tuple) != 0)
455 tuple->CISOffset = tuple->TupleLink = 0;
456 tuple->DesiredTuple = req;
458 return pccard_get_next_tuple(s, function, tuple);
460 EXPORT_SYMBOL(pccard_get_first_tuple);
462 static int follow_link(struct pcmcia_socket *s, tuple_t *tuple)
467 if (MFC_FN(tuple->Flags)) {
468 /* Get indirect link from the MFC tuple */
469 read_cis_cache(s, LINK_SPACE(tuple->Flags),
470 tuple->LinkOffset, 5, link);
471 ofs = get_unaligned_le32(link + 1);
472 SPACE(tuple->Flags) = (link[0] == CISTPL_MFC_ATTR);
473 /* Move to the next indirect link */
474 tuple->LinkOffset += 5;
475 MFC_FN(tuple->Flags)--;
476 } else if (HAS_LINK(tuple->Flags)) {
477 ofs = tuple->LinkOffset;
478 SPACE(tuple->Flags) = LINK_SPACE(tuple->Flags);
479 HAS_LINK(tuple->Flags) = 0;
483 if (!(s->state & SOCKET_CARDBUS) && SPACE(tuple->Flags)) {
484 /* This is ugly, but a common CIS error is to code the long
485 link offset incorrectly, so we check the right spot... */
486 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
487 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
488 (strncmp(link+2, "CIS", 3) == 0))
490 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
491 /* Then, we try the wrong spot... */
494 read_cis_cache(s, SPACE(tuple->Flags), ofs, 5, link);
495 if ((link[0] == CISTPL_LINKTARGET) && (link[1] >= 3) &&
496 (strncmp(link+2, "CIS", 3) == 0))
498 remove_cis_cache(s, SPACE(tuple->Flags), ofs, 5);
502 int pccard_get_next_tuple(struct pcmcia_socket *s, unsigned int function, tuple_t *tuple)
509 if (!(s->state & SOCKET_PRESENT))
512 link[1] = tuple->TupleLink;
513 ofs = tuple->CISOffset + tuple->TupleLink;
514 attr = SPACE(tuple->Flags);
516 for (i = 0; i < MAX_TUPLES; i++) {
517 if (link[1] == 0xff) {
518 link[0] = CISTPL_END;
520 read_cis_cache(s, attr, ofs, 2, link);
521 if (link[0] == CISTPL_NULL) {
526 /* End of chain? Follow long link if possible */
527 if (link[0] == CISTPL_END) {
528 if ((ofs = follow_link(s, tuple)) < 0)
530 attr = SPACE(tuple->Flags);
531 read_cis_cache(s, attr, ofs, 2, link);
534 /* Is this a link tuple? Make a note of it */
535 if ((link[0] == CISTPL_LONGLINK_A) ||
536 (link[0] == CISTPL_LONGLINK_C) ||
537 (link[0] == CISTPL_LONGLINK_MFC) ||
538 (link[0] == CISTPL_LINKTARGET) ||
539 (link[0] == CISTPL_INDIRECT) ||
540 (link[0] == CISTPL_NO_LINK)) {
542 case CISTPL_LONGLINK_A:
543 HAS_LINK(tuple->Flags) = 1;
544 LINK_SPACE(tuple->Flags) = attr | IS_ATTR;
545 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
547 case CISTPL_LONGLINK_C:
548 HAS_LINK(tuple->Flags) = 1;
549 LINK_SPACE(tuple->Flags) = attr & ~IS_ATTR;
550 read_cis_cache(s, attr, ofs+2, 4, &tuple->LinkOffset);
552 case CISTPL_INDIRECT:
553 HAS_LINK(tuple->Flags) = 1;
554 LINK_SPACE(tuple->Flags) = IS_ATTR | IS_INDIRECT;
555 tuple->LinkOffset = 0;
557 case CISTPL_LONGLINK_MFC:
558 tuple->LinkOffset = ofs + 3;
559 LINK_SPACE(tuple->Flags) = attr;
560 if (function == BIND_FN_ALL) {
561 /* Follow all the MFC links */
562 read_cis_cache(s, attr, ofs+2, 1, &tmp);
563 MFC_FN(tuple->Flags) = tmp;
565 /* Follow exactly one of the links */
566 MFC_FN(tuple->Flags) = 1;
567 tuple->LinkOffset += function * 5;
571 HAS_LINK(tuple->Flags) = 0;
574 if ((tuple->Attributes & TUPLE_RETURN_LINK) &&
575 (tuple->DesiredTuple == RETURN_FIRST_TUPLE))
578 if (tuple->DesiredTuple == RETURN_FIRST_TUPLE)
581 if (link[0] == tuple->DesiredTuple)
585 if (i == MAX_TUPLES) {
586 cs_dbg(s, 1, "cs: overrun in pcmcia_get_next_tuple\n");
590 tuple->TupleCode = link[0];
591 tuple->TupleLink = link[1];
592 tuple->CISOffset = ofs + 2;
595 EXPORT_SYMBOL(pccard_get_next_tuple);
597 /*====================================================================*/
599 #define _MIN(a, b) (((a) < (b)) ? (a) : (b))
601 int pccard_get_tuple_data(struct pcmcia_socket *s, tuple_t *tuple)
608 if (tuple->TupleLink < tuple->TupleOffset)
610 len = tuple->TupleLink - tuple->TupleOffset;
611 tuple->TupleDataLen = tuple->TupleLink;
614 read_cis_cache(s, SPACE(tuple->Flags),
615 tuple->CISOffset + tuple->TupleOffset,
616 _MIN(len, tuple->TupleDataMax), tuple->TupleData);
619 EXPORT_SYMBOL(pccard_get_tuple_data);
622 /*======================================================================
624 Parsing routines for individual tuples
626 ======================================================================*/
628 static int parse_device(tuple_t *tuple, cistpl_device_t *device)
634 p = (u_char *)tuple->TupleData;
635 q = p + tuple->TupleDataLen;
638 for (i = 0; i < CISTPL_MAX_DEVICES; i++) {
640 if (*p == 0xff) break;
641 device->dev[i].type = (*p >> 4);
642 device->dev[i].wp = (*p & 0x08) ? 1 : 0;
644 case 0: device->dev[i].speed = 0; break;
645 case 1: device->dev[i].speed = 250; break;
646 case 2: device->dev[i].speed = 200; break;
647 case 3: device->dev[i].speed = 150; break;
648 case 4: device->dev[i].speed = 100; break;
650 if (++p == q) return CS_BAD_TUPLE;
651 device->dev[i].speed = SPEED_CVT(*p);
653 if (++p == q) return CS_BAD_TUPLE;
659 if (++p == q) return CS_BAD_TUPLE;
660 if (*p == 0xff) break;
662 if (scale == 7) return CS_BAD_TUPLE;
663 device->dev[i].size = ((*p >> 3) + 1) * (512 << (scale*2));
671 /*====================================================================*/
673 static int parse_checksum(tuple_t *tuple, cistpl_checksum_t *csum)
676 if (tuple->TupleDataLen < 5)
678 p = (u_char *) tuple->TupleData;
679 csum->addr = tuple->CISOffset + get_unaligned_le16(p) - 2;
680 csum->len = get_unaligned_le16(p + 2);
681 csum->sum = *(p + 4);
685 /*====================================================================*/
687 static int parse_longlink(tuple_t *tuple, cistpl_longlink_t *link)
689 if (tuple->TupleDataLen < 4)
691 link->addr = get_unaligned_le32(tuple->TupleData);
695 /*====================================================================*/
697 static int parse_longlink_mfc(tuple_t *tuple,
698 cistpl_longlink_mfc_t *link)
703 p = (u_char *)tuple->TupleData;
706 if (tuple->TupleDataLen <= link->nfn*5)
708 for (i = 0; i < link->nfn; i++) {
709 link->fn[i].space = *p; p++;
710 link->fn[i].addr = get_unaligned_le32(p);
716 /*====================================================================*/
718 static int parse_strings(u_char *p, u_char *q, int max,
719 char *s, u_char *ofs, u_char *found)
723 if (p == q) return CS_BAD_TUPLE;
725 for (i = 0; i < max; i++) {
726 if (*p == 0xff) break;
730 s[j++] = (*p == 0xff) ? '\0' : *p;
731 if ((*p == '\0') || (*p == 0xff)) break;
732 if (++p == q) return CS_BAD_TUPLE;
734 if ((*p == 0xff) || (++p == q)) break;
740 return (ns == max) ? 0 : CS_BAD_TUPLE;
744 /*====================================================================*/
746 static int parse_vers_1(tuple_t *tuple, cistpl_vers_1_t *vers_1)
750 p = (u_char *)tuple->TupleData;
751 q = p + tuple->TupleDataLen;
753 vers_1->major = *p; p++;
754 vers_1->minor = *p; p++;
755 if (p >= q) return CS_BAD_TUPLE;
757 return parse_strings(p, q, CISTPL_VERS_1_MAX_PROD_STRINGS,
758 vers_1->str, vers_1->ofs, &vers_1->ns);
761 /*====================================================================*/
763 static int parse_altstr(tuple_t *tuple, cistpl_altstr_t *altstr)
767 p = (u_char *)tuple->TupleData;
768 q = p + tuple->TupleDataLen;
770 return parse_strings(p, q, CISTPL_MAX_ALTSTR_STRINGS,
771 altstr->str, altstr->ofs, &altstr->ns);
774 /*====================================================================*/
776 static int parse_jedec(tuple_t *tuple, cistpl_jedec_t *jedec)
781 p = (u_char *)tuple->TupleData;
782 q = p + tuple->TupleDataLen;
784 for (nid = 0; nid < CISTPL_MAX_DEVICES; nid++) {
786 jedec->id[nid].mfr = p[0];
787 jedec->id[nid].info = p[1];
794 /*====================================================================*/
796 static int parse_manfid(tuple_t *tuple, cistpl_manfid_t *m)
798 if (tuple->TupleDataLen < 4)
800 m->manf = get_unaligned_le16(tuple->TupleData);
801 m->card = get_unaligned_le16(tuple->TupleData + 2);
805 /*====================================================================*/
807 static int parse_funcid(tuple_t *tuple, cistpl_funcid_t *f)
810 if (tuple->TupleDataLen < 2)
812 p = (u_char *)tuple->TupleData;
818 /*====================================================================*/
820 static int parse_funce(tuple_t *tuple, cistpl_funce_t *f)
824 if (tuple->TupleDataLen < 1)
826 p = (u_char *)tuple->TupleData;
828 for (i = 1; i < tuple->TupleDataLen; i++)
833 /*====================================================================*/
835 static int parse_config(tuple_t *tuple, cistpl_config_t *config)
840 p = (u_char *)tuple->TupleData;
842 rmsz = (*p & 0x3c) >> 2;
843 if (tuple->TupleDataLen < rasz+rmsz+4)
845 config->last_idx = *(++p);
848 for (i = 0; i <= rasz; i++)
849 config->base += p[i] << (8*i);
851 for (i = 0; i < 4; i++)
852 config->rmask[i] = 0;
853 for (i = 0; i <= rmsz; i++)
854 config->rmask[i>>2] += p[i] << (8*(i%4));
855 config->subtuples = tuple->TupleDataLen - (rasz+rmsz+4);
859 /*======================================================================
861 The following routines are all used to parse the nightmarish
862 config table entries.
864 ======================================================================*/
866 static u_char *parse_power(u_char *p, u_char *q,
872 if (p == q) return NULL;
876 for (i = 0; i < 7; i++)
877 if (pwr->present & (1<<i)) {
878 if (p == q) return NULL;
879 pwr->param[i] = POWER_CVT(*p);
880 scale = POWER_SCALE(*p);
882 if (++p == q) return NULL;
883 if ((*p & 0x7f) < 100)
884 pwr->param[i] += (*p & 0x7f) * scale / 100;
886 pwr->flags |= CISTPL_POWER_HIGHZ_OK;
890 pwr->flags |= CISTPL_POWER_HIGHZ_REQ;
899 /*====================================================================*/
901 static u_char *parse_timing(u_char *p, u_char *q,
902 cistpl_timing_t *timing)
906 if (p == q) return NULL;
908 if ((scale & 3) != 3) {
909 if (++p == q) return NULL;
910 timing->wait = SPEED_CVT(*p);
911 timing->waitscale = exponent[scale & 3];
915 if ((scale & 7) != 7) {
916 if (++p == q) return NULL;
917 timing->ready = SPEED_CVT(*p);
918 timing->rdyscale = exponent[scale & 7];
923 if (++p == q) return NULL;
924 timing->reserved = SPEED_CVT(*p);
925 timing->rsvscale = exponent[scale];
927 timing->reserved = 0;
932 /*====================================================================*/
934 static u_char *parse_io(u_char *p, u_char *q, cistpl_io_t *io)
938 if (p == q) return NULL;
944 io->win[0].len = (1 << (io->flags & CISTPL_IO_LINES_MASK));
948 if (++p == q) return NULL;
949 io->nwin = (*p & 0x0f) + 1;
950 bsz = (*p & 0x30) >> 4;
952 lsz = (*p & 0xc0) >> 6;
956 for (i = 0; i < io->nwin; i++) {
959 for (j = 0; j < bsz; j++, p++) {
960 if (p == q) return NULL;
961 io->win[i].base += *p << (j*8);
963 for (j = 0; j < lsz; j++, p++) {
964 if (p == q) return NULL;
965 io->win[i].len += *p << (j*8);
971 /*====================================================================*/
973 static u_char *parse_mem(u_char *p, u_char *q, cistpl_mem_t *mem)
975 int i, j, asz, lsz, has_ha;
978 if (p == q) return NULL;
980 mem->nwin = (*p & 0x07) + 1;
981 lsz = (*p & 0x18) >> 3;
982 asz = (*p & 0x60) >> 5;
983 has_ha = (*p & 0x80);
984 if (++p == q) return NULL;
986 for (i = 0; i < mem->nwin; i++) {
988 for (j = 0; j < lsz; j++, p++) {
989 if (p == q) return NULL;
992 for (j = 0; j < asz; j++, p++) {
993 if (p == q) return NULL;
997 for (j = 0; j < asz; j++, p++) {
998 if (p == q) return NULL;
1001 mem->win[i].len = len << 8;
1002 mem->win[i].card_addr = ca << 8;
1003 mem->win[i].host_addr = ha << 8;
1008 /*====================================================================*/
1010 static u_char *parse_irq(u_char *p, u_char *q, cistpl_irq_t *irq)
1012 if (p == q) return NULL;
1013 irq->IRQInfo1 = *p; p++;
1014 if (irq->IRQInfo1 & IRQ_INFO2_VALID) {
1015 if (p+2 > q) return NULL;
1016 irq->IRQInfo2 = (p[1]<<8) + p[0];
1022 /*====================================================================*/
1024 static int parse_cftable_entry(tuple_t *tuple,
1025 cistpl_cftable_entry_t *entry)
1027 u_char *p, *q, features;
1029 p = tuple->TupleData;
1030 q = p + tuple->TupleDataLen;
1031 entry->index = *p & 0x3f;
1034 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1036 if (++p == q) return CS_BAD_TUPLE;
1038 entry->flags |= CISTPL_CFTABLE_BVDS;
1040 entry->flags |= CISTPL_CFTABLE_WP;
1042 entry->flags |= CISTPL_CFTABLE_RDYBSY;
1044 entry->flags |= CISTPL_CFTABLE_MWAIT;
1045 entry->interface = *p & 0x0f;
1047 entry->interface = 0;
1049 /* Process optional features */
1050 if (++p == q) return CS_BAD_TUPLE;
1054 if ((features & 3) > 0) {
1055 p = parse_power(p, q, &entry->vcc);
1056 if (p == NULL) return CS_BAD_TUPLE;
1058 entry->vcc.present = 0;
1059 if ((features & 3) > 1) {
1060 p = parse_power(p, q, &entry->vpp1);
1061 if (p == NULL) return CS_BAD_TUPLE;
1063 entry->vpp1.present = 0;
1064 if ((features & 3) > 2) {
1065 p = parse_power(p, q, &entry->vpp2);
1066 if (p == NULL) return CS_BAD_TUPLE;
1068 entry->vpp2.present = 0;
1070 /* Timing options */
1071 if (features & 0x04) {
1072 p = parse_timing(p, q, &entry->timing);
1073 if (p == NULL) return CS_BAD_TUPLE;
1075 entry->timing.wait = 0;
1076 entry->timing.ready = 0;
1077 entry->timing.reserved = 0;
1080 /* I/O window options */
1081 if (features & 0x08) {
1082 p = parse_io(p, q, &entry->io);
1083 if (p == NULL) return CS_BAD_TUPLE;
1087 /* Interrupt options */
1088 if (features & 0x10) {
1089 p = parse_irq(p, q, &entry->irq);
1090 if (p == NULL) return CS_BAD_TUPLE;
1092 entry->irq.IRQInfo1 = 0;
1094 switch (features & 0x60) {
1096 entry->mem.nwin = 0;
1099 entry->mem.nwin = 1;
1100 entry->mem.win[0].len = get_unaligned_le16(p) << 8;
1101 entry->mem.win[0].card_addr = 0;
1102 entry->mem.win[0].host_addr = 0;
1104 if (p > q) return CS_BAD_TUPLE;
1107 entry->mem.nwin = 1;
1108 entry->mem.win[0].len = get_unaligned_le16(p) << 8;
1109 entry->mem.win[0].card_addr = get_unaligned_le16(p + 2) << 8;
1110 entry->mem.win[0].host_addr = 0;
1112 if (p > q) return CS_BAD_TUPLE;
1115 p = parse_mem(p, q, &entry->mem);
1116 if (p == NULL) return CS_BAD_TUPLE;
1121 if (features & 0x80) {
1122 if (p == q) return CS_BAD_TUPLE;
1123 entry->flags |= (*p << 8);
1125 if (++p == q) return CS_BAD_TUPLE;
1129 entry->subtuples = q-p;
1134 /*====================================================================*/
1136 #ifdef CONFIG_CARDBUS
1138 static int parse_bar(tuple_t *tuple, cistpl_bar_t *bar)
1141 if (tuple->TupleDataLen < 6)
1142 return CS_BAD_TUPLE;
1143 p = (u_char *)tuple->TupleData;
1146 bar->size = get_unaligned_le32(p);
1150 static int parse_config_cb(tuple_t *tuple, cistpl_config_t *config)
1154 p = (u_char *)tuple->TupleData;
1155 if ((*p != 3) || (tuple->TupleDataLen < 6))
1156 return CS_BAD_TUPLE;
1157 config->last_idx = *(++p);
1159 config->base = get_unaligned_le32(p);
1160 config->subtuples = tuple->TupleDataLen - 6;
1164 static int parse_cftable_entry_cb(tuple_t *tuple,
1165 cistpl_cftable_entry_cb_t *entry)
1167 u_char *p, *q, features;
1169 p = tuple->TupleData;
1170 q = p + tuple->TupleDataLen;
1171 entry->index = *p & 0x3f;
1174 entry->flags |= CISTPL_CFTABLE_DEFAULT;
1176 /* Process optional features */
1177 if (++p == q) return CS_BAD_TUPLE;
1181 if ((features & 3) > 0) {
1182 p = parse_power(p, q, &entry->vcc);
1183 if (p == NULL) return CS_BAD_TUPLE;
1185 entry->vcc.present = 0;
1186 if ((features & 3) > 1) {
1187 p = parse_power(p, q, &entry->vpp1);
1188 if (p == NULL) return CS_BAD_TUPLE;
1190 entry->vpp1.present = 0;
1191 if ((features & 3) > 2) {
1192 p = parse_power(p, q, &entry->vpp2);
1193 if (p == NULL) return CS_BAD_TUPLE;
1195 entry->vpp2.present = 0;
1197 /* I/O window options */
1198 if (features & 0x08) {
1199 if (p == q) return CS_BAD_TUPLE;
1200 entry->io = *p; p++;
1204 /* Interrupt options */
1205 if (features & 0x10) {
1206 p = parse_irq(p, q, &entry->irq);
1207 if (p == NULL) return CS_BAD_TUPLE;
1209 entry->irq.IRQInfo1 = 0;
1211 if (features & 0x20) {
1212 if (p == q) return CS_BAD_TUPLE;
1213 entry->mem = *p; p++;
1218 if (features & 0x80) {
1219 if (p == q) return CS_BAD_TUPLE;
1220 entry->flags |= (*p << 8);
1222 if (++p == q) return CS_BAD_TUPLE;
1223 entry->flags |= (*p << 16);
1226 if (++p == q) return CS_BAD_TUPLE;
1230 entry->subtuples = q-p;
1237 /*====================================================================*/
1239 static int parse_device_geo(tuple_t *tuple, cistpl_device_geo_t *geo)
1244 p = (u_char *)tuple->TupleData;
1245 q = p + tuple->TupleDataLen;
1247 for (n = 0; n < CISTPL_MAX_DEVICES; n++) {
1249 geo->geo[n].buswidth = p[0];
1250 geo->geo[n].erase_block = 1 << (p[1]-1);
1251 geo->geo[n].read_block = 1 << (p[2]-1);
1252 geo->geo[n].write_block = 1 << (p[3]-1);
1253 geo->geo[n].partition = 1 << (p[4]-1);
1254 geo->geo[n].interleave = 1 << (p[5]-1);
1261 /*====================================================================*/
1263 static int parse_vers_2(tuple_t *tuple, cistpl_vers_2_t *v2)
1267 if (tuple->TupleDataLen < 10)
1268 return CS_BAD_TUPLE;
1270 p = tuple->TupleData;
1271 q = p + tuple->TupleDataLen;
1275 v2->dindex = get_unaligned_le16(p +2 );
1280 return parse_strings(p, q, 2, v2->str, &v2->vendor, NULL);
1283 /*====================================================================*/
1285 static int parse_org(tuple_t *tuple, cistpl_org_t *org)
1290 p = tuple->TupleData;
1291 q = p + tuple->TupleDataLen;
1292 if (p == q) return CS_BAD_TUPLE;
1294 if (++p == q) return CS_BAD_TUPLE;
1295 for (i = 0; i < 30; i++) {
1297 if (*p == '\0') break;
1298 if (++p == q) return CS_BAD_TUPLE;
1303 /*====================================================================*/
1305 static int parse_format(tuple_t *tuple, cistpl_format_t *fmt)
1309 if (tuple->TupleDataLen < 10)
1310 return CS_BAD_TUPLE;
1312 p = tuple->TupleData;
1316 fmt->offset = get_unaligned_le32(p + 2);
1317 fmt->length = get_unaligned_le32(p + 6);
1322 /*====================================================================*/
1324 int pccard_parse_tuple(tuple_t *tuple, cisparse_t *parse)
1328 if (tuple->TupleDataLen > tuple->TupleDataMax)
1329 return CS_BAD_TUPLE;
1330 switch (tuple->TupleCode) {
1332 case CISTPL_DEVICE_A:
1333 ret = parse_device(tuple, &parse->device);
1335 #ifdef CONFIG_CARDBUS
1337 ret = parse_bar(tuple, &parse->bar);
1339 case CISTPL_CONFIG_CB:
1340 ret = parse_config_cb(tuple, &parse->config);
1342 case CISTPL_CFTABLE_ENTRY_CB:
1343 ret = parse_cftable_entry_cb(tuple, &parse->cftable_entry_cb);
1346 case CISTPL_CHECKSUM:
1347 ret = parse_checksum(tuple, &parse->checksum);
1349 case CISTPL_LONGLINK_A:
1350 case CISTPL_LONGLINK_C:
1351 ret = parse_longlink(tuple, &parse->longlink);
1353 case CISTPL_LONGLINK_MFC:
1354 ret = parse_longlink_mfc(tuple, &parse->longlink_mfc);
1357 ret = parse_vers_1(tuple, &parse->version_1);
1360 ret = parse_altstr(tuple, &parse->altstr);
1362 case CISTPL_JEDEC_A:
1363 case CISTPL_JEDEC_C:
1364 ret = parse_jedec(tuple, &parse->jedec);
1367 ret = parse_manfid(tuple, &parse->manfid);
1370 ret = parse_funcid(tuple, &parse->funcid);
1373 ret = parse_funce(tuple, &parse->funce);
1376 ret = parse_config(tuple, &parse->config);
1378 case CISTPL_CFTABLE_ENTRY:
1379 ret = parse_cftable_entry(tuple, &parse->cftable_entry);
1381 case CISTPL_DEVICE_GEO:
1382 case CISTPL_DEVICE_GEO_A:
1383 ret = parse_device_geo(tuple, &parse->device_geo);
1386 ret = parse_vers_2(tuple, &parse->vers_2);
1389 ret = parse_org(tuple, &parse->org);
1392 case CISTPL_FORMAT_A:
1393 ret = parse_format(tuple, &parse->format);
1395 case CISTPL_NO_LINK:
1396 case CISTPL_LINKTARGET:
1405 EXPORT_SYMBOL(pccard_parse_tuple);
1407 /*======================================================================
1409 This is used internally by Card Services to look up CIS stuff.
1411 ======================================================================*/
1413 int pccard_read_tuple(struct pcmcia_socket *s, unsigned int function, cisdata_t code, void *parse)
1419 buf = kmalloc(256, GFP_KERNEL);
1421 dev_printk(KERN_WARNING, &s->dev, "no memory to read tuple\n");
1424 tuple.DesiredTuple = code;
1425 tuple.Attributes = TUPLE_RETURN_COMMON;
1426 ret = pccard_get_first_tuple(s, function, &tuple);
1429 tuple.TupleData = buf;
1430 tuple.TupleOffset = 0;
1431 tuple.TupleDataMax = 255;
1432 ret = pccard_get_tuple_data(s, &tuple);
1435 ret = pccard_parse_tuple(&tuple, parse);
1440 EXPORT_SYMBOL(pccard_read_tuple);
1442 /*======================================================================
1444 This tries to determine if a card has a sensible CIS. It returns
1445 the number of tuples in the CIS, or 0 if the CIS looks bad. The
1446 checks include making sure several critical tuples are present and
1447 valid; seeing if the total number of tuples is reasonable; and
1448 looking for tuples that use reserved codes.
1450 ======================================================================*/
1452 int pccard_validate_cis(struct pcmcia_socket *s, unsigned int function, unsigned int *info)
1456 unsigned int count = 0;
1457 int ret, reserved, dev_ok = 0, ident_ok = 0;
1462 tuple = kmalloc(sizeof(*tuple), GFP_KERNEL);
1463 if (tuple == NULL) {
1464 dev_printk(KERN_WARNING, &s->dev, "no memory to validate CIS\n");
1467 p = kmalloc(sizeof(*p), GFP_KERNEL);
1470 dev_printk(KERN_WARNING, &s->dev, "no memory to validate CIS\n");
1474 count = reserved = 0;
1475 tuple->DesiredTuple = RETURN_FIRST_TUPLE;
1476 tuple->Attributes = TUPLE_RETURN_COMMON;
1477 ret = pccard_get_first_tuple(s, function, tuple);
1481 /* First tuple should be DEVICE; we should really have either that
1482 or a CFTABLE_ENTRY of some sort */
1483 if ((tuple->TupleCode == CISTPL_DEVICE) ||
1484 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY, p) == 0) ||
1485 (pccard_read_tuple(s, function, CISTPL_CFTABLE_ENTRY_CB, p) == 0))
1488 /* All cards should have a MANFID tuple, and/or a VERS_1 or VERS_2
1489 tuple, for card identification. Certain old D-Link and Linksys
1490 cards have only a broken VERS_2 tuple; hence the bogus test. */
1491 if ((pccard_read_tuple(s, function, CISTPL_MANFID, p) == 0) ||
1492 (pccard_read_tuple(s, function, CISTPL_VERS_1, p) == 0) ||
1493 (pccard_read_tuple(s, function, CISTPL_VERS_2, p) != -ENOSPC))
1496 if (!dev_ok && !ident_ok)
1499 for (count = 1; count < MAX_TUPLES; count++) {
1500 ret = pccard_get_next_tuple(s, function, tuple);
1503 if (((tuple->TupleCode > 0x23) && (tuple->TupleCode < 0x40)) ||
1504 ((tuple->TupleCode > 0x47) && (tuple->TupleCode < 0x80)) ||
1505 ((tuple->TupleCode > 0x90) && (tuple->TupleCode < 0xff)))
1508 if ((count == MAX_TUPLES) || (reserved > 5) ||
1509 ((!dev_ok || !ident_ok) && (count > 10)))
1519 EXPORT_SYMBOL(pccard_validate_cis);