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1da177e4 1/*
69f34c98 2 * $Id: pcmciamtd.c,v 1.55 2005/11/07 11:14:28 gleixner Exp $
1da177e4
LT		 3 *
4 * pcmciamtd.c - MTD driver for PCMCIA flash memory cards
5 *
6 * Author: Simon Evans <spse@secret.org.uk>
7 *
8 * Copyright (C) 2002 Simon Evans
9 *
10 * Licence: GPL
11 *
12 */
13
14#include <linux/module.h>
15#include <linux/slab.h>
16#include <linux/timer.h>
17#include <linux/init.h>
18#include <asm/io.h>
19#include <asm/system.h>
20
1da177e4
LT		 21#include <pcmcia/cs_types.h>
22#include <pcmcia/cs.h>
23#include <pcmcia/cistpl.h>
24#include <pcmcia/ds.h>
25
26#include <linux/mtd/map.h>
27#include <linux/mtd/mtd.h>
28
29#ifdef CONFIG_MTD_DEBUG
30static int debug = CONFIG_MTD_DEBUG_VERBOSE;
31MODULE_PARM(debug, "i");
32MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy");
33#undef DEBUG
34#define DEBUG(n, format, arg...) \
35 if (n <= debug) { \
36 printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __FUNCTION__ , ## arg); \
37 }
38
39#else
40#undef DEBUG
41#define DEBUG(n, arg...)
42static const int debug = 0;
43#endif
44
45#define err(format, arg...) printk(KERN_ERR "pcmciamtd: " format "\n" , ## arg)
46#define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg)
47#define warn(format, arg...) printk(KERN_WARNING "pcmciamtd: " format "\n" , ## arg)
48
49
50#define DRIVER_DESC "PCMCIA Flash memory card driver"
69f34c98 51#define DRIVER_VERSION "$Revision: 1.55 $"
1da177e4
LT		 52
53/* Size of the PCMCIA address space: 26 bits = 64 MB */
54#define MAX_PCMCIA_ADDR 0x4000000
55
56struct pcmciamtd_dev {
57 dev_link_t link; /* PCMCIA link */
58 dev_node_t node; /* device node */
59 caddr_t win_base; /* ioremapped address of PCMCIA window */
60 unsigned int win_size; /* size of window */
61 unsigned int offset; /* offset into card the window currently points at */
62 struct map_info pcmcia_map;
63 struct mtd_info *mtd_info;
64 int vpp;
65 char mtd_name[sizeof(struct cistpl_vers_1_t)];
66};
67
68
1da177e4
LT		 69/* Module parameters */
70
71/* 2 = do 16-bit transfers, 1 = do 8-bit transfers */
72static int bankwidth = 2;
73
74/* Speed of memory accesses, in ns */
75static int mem_speed;
76
77/* Force the size of an SRAM card */
78static int force_size;
79
80/* Force Vpp */
81static int vpp;
82
83/* Set Vpp */
84static int setvpp;
85
86/* Force card to be treated as FLASH, ROM or RAM */
87static int mem_type;
88
89MODULE_LICENSE("GPL");
90MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
91MODULE_DESCRIPTION(DRIVER_DESC);
92MODULE_PARM(bankwidth, "i");
93MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)");
94MODULE_PARM(mem_speed, "i");
95MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns");
96MODULE_PARM(force_size, "i");
97MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)");
98MODULE_PARM(setvpp, "i");
99MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)");
100MODULE_PARM(vpp, "i");
101MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)");
102MODULE_PARM(mem_type, "i");
103MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)");
104
105
106/* read/write{8,16} copy_{from,to} routines with window remapping to access whole card */
107static caddr_t remap_window(struct map_info *map, unsigned long to)
108{
109 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
110 window_handle_t win = (window_handle_t)map->map_priv_2;
111 memreq_t mrq;
112 int ret;
113
114 if(!(dev->link.state & DEV_PRESENT)) {
115 DEBUG(1, "device removed state = 0x%4.4X", dev->link.state);
116 return 0;
117 }
118
119 mrq.CardOffset = to & ~(dev->win_size-1);
120 if(mrq.CardOffset != dev->offset) {
121 DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x",
122 dev->offset, mrq.CardOffset);
123 mrq.Page = 0;
124 if( (ret = pcmcia_map_mem_page(win, &mrq)) != CS_SUCCESS) {
125 cs_error(dev->link.handle, MapMemPage, ret);
126 return NULL;
127 }
128 dev->offset = mrq.CardOffset;
129 }
130 return dev->win_base + (to & (dev->win_size-1));
131}
132
133
134static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs)
135{
136 caddr_t addr;
137 map_word d = {{0}};
138
139 addr = remap_window(map, ofs);
140 if(!addr)
141 return d;
142
143 d.x[0] = readb(addr);
144 DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, addr, d.x[0]);
145 return d;
146}
147
148
149static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs)
150{
151 caddr_t addr;
152 map_word d = {{0}};
153
154 addr = remap_window(map, ofs);
155 if(!addr)
156 return d;
157
158 d.x[0] = readw(addr);
159 DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, addr, d.x[0]);
160 return d;
161}
162
163
164static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len)
165{
166 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
167 unsigned long win_size = dev->win_size;
168
169 DEBUG(3, "to = %p from = %lu len = %u", to, from, len);
170 while(len) {
171 int toread = win_size - (from & (win_size-1));
172 caddr_t addr;
173
174 if(toread > len)
175 toread = len;
69f34c98 176
1da177e4
LT		 177 addr = remap_window(map, from);
178 if(!addr)
179 return;
180
181 DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread);
182 memcpy_fromio(to, addr, toread);
183 len -= toread;
184 to += toread;
185 from += toread;
186 }
187}
188
189
190static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr)
191{
192 caddr_t addr = remap_window(map, adr);
193
194 if(!addr)
195 return;
196
197 DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, addr, d.x[0]);
198 writeb(d.x[0], addr);
199}
200
201
202static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr)
203{
204 caddr_t addr = remap_window(map, adr);
205 if(!addr)
206 return;
207
208 DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, addr, d.x[0]);
209 writew(d.x[0], addr);
210}
211
212
213static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len)
214{
215 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
216 unsigned long win_size = dev->win_size;
217
218 DEBUG(3, "to = %lu from = %p len = %u", to, from, len);
219 while(len) {
220 int towrite = win_size - (to & (win_size-1));
221 caddr_t addr;
222
223 if(towrite > len)
224 towrite = len;
225
226 addr = remap_window(map, to);
227 if(!addr)
228 return;
229
230 DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite);
231 memcpy_toio(addr, from, towrite);
232 len -= towrite;
233 to += towrite;
234 from += towrite;
235 }
236}
237
238
239/* read/write{8,16} copy_{from,to} routines with direct access */
240
241#define DEV_REMOVED(x) (!(*(u_int *)x->map_priv_1 & DEV_PRESENT))
242
243static map_word pcmcia_read8(struct map_info *map, unsigned long ofs)
244{
245 caddr_t win_base = (caddr_t)map->map_priv_2;
246 map_word d = {{0}};
247
248 if(DEV_REMOVED(map))
249 return d;
250
251 d.x[0] = readb(win_base + ofs);
252 DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, win_base + ofs, d.x[0]);
253 return d;
254}
255
256
257static map_word pcmcia_read16(struct map_info *map, unsigned long ofs)
258{
259 caddr_t win_base = (caddr_t)map->map_priv_2;
260 map_word d = {{0}};
261
262 if(DEV_REMOVED(map))
263 return d;
264
265 d.x[0] = readw(win_base + ofs);
266 DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, win_base + ofs, d.x[0]);
267 return d;
268}
269
270
271static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
272{
273 caddr_t win_base = (caddr_t)map->map_priv_2;
274
275 if(DEV_REMOVED(map))
276 return;
277
278 DEBUG(3, "to = %p from = %lu len = %u", to, from, len);
279 memcpy_fromio(to, win_base + from, len);
280}
281
282
283static void pcmcia_write8(struct map_info *map, u8 d, unsigned long adr)
284{
285 caddr_t win_base = (caddr_t)map->map_priv_2;
286
287 if(DEV_REMOVED(map))
288 return;
289
290 DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, win_base + adr, d);
291 writeb(d, win_base + adr);
292}
293
294
295static void pcmcia_write16(struct map_info *map, u16 d, unsigned long adr)
296{
297 caddr_t win_base = (caddr_t)map->map_priv_2;
298
299 if(DEV_REMOVED(map))
300 return;
301
302 DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, win_base + adr, d);
303 writew(d, win_base + adr);
304}
305
306
307static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
308{
309 caddr_t win_base = (caddr_t)map->map_priv_2;
310
311 if(DEV_REMOVED(map))
312 return;
313
314 DEBUG(3, "to = %lu from = %p len = %u", to, from, len);
315 memcpy_toio(win_base + to, from, len);
316}
317
318
319static void pcmciamtd_set_vpp(struct map_info *map, int on)
320{
321 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
322 dev_link_t *link = &dev->link;
323 modconf_t mod;
324 int ret;
325
326 mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID;
327 mod.Vcc = 0;
328 mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0;
329
330 DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp);
331 ret = pcmcia_modify_configuration(link->handle, &mod);
332 if(ret != CS_SUCCESS) {
333 cs_error(link->handle, ModifyConfiguration, ret);
334 }
335}
336
337
338/* After a card is removed, pcmciamtd_release() will unregister the
339 * device, and release the PCMCIA configuration. If the device is
340 * still open, this will be postponed until it is closed.
341 */
342
343static void pcmciamtd_release(dev_link_t *link)
344{
345 struct pcmciamtd_dev *dev = link->priv;
346
347 DEBUG(3, "link = 0x%p", link);
348
349 if (link->win) {
350 if(dev->win_base) {
351 iounmap(dev->win_base);
352 dev->win_base = NULL;
353 }
354 pcmcia_release_window(link->win);
355 }
356 pcmcia_release_configuration(link->handle);
357 link->state &= ~DEV_CONFIG;
358}
359
360
361static void card_settings(struct pcmciamtd_dev *dev, dev_link_t *link, int *new_name)
362{
363 int rc;
364 tuple_t tuple;
365 cisparse_t parse;
366 u_char buf[64];
367
368 tuple.Attributes = 0;
369 tuple.TupleData = (cisdata_t *)buf;
370 tuple.TupleDataMax = sizeof(buf);
371 tuple.TupleOffset = 0;
372 tuple.DesiredTuple = RETURN_FIRST_TUPLE;
373
374 rc = pcmcia_get_first_tuple(link->handle, &tuple);
375 while(rc == CS_SUCCESS) {
376 rc = pcmcia_get_tuple_data(link->handle, &tuple);
377 if(rc != CS_SUCCESS) {
378 cs_error(link->handle, GetTupleData, rc);
379 break;
380 }
381 rc = pcmcia_parse_tuple(link->handle, &tuple, &parse);
382 if(rc != CS_SUCCESS) {
383 cs_error(link->handle, ParseTuple, rc);
384 break;
385 }
69f34c98 386
1da177e4
LT		 387 switch(tuple.TupleCode) {
388 case CISTPL_FORMAT: {
389 cistpl_format_t *t = &parse.format;
390 (void)t; /* Shut up, gcc */
391 DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u",
392 t->type, t->edc, t->offset, t->length);
393 break;
69f34c98 394
1da177e4 395 }
69f34c98 396
1da177e4
LT		 397 case CISTPL_DEVICE: {
398 cistpl_device_t *t = &parse.device;
399 int i;
400 DEBUG(2, "Common memory:");
401 dev->pcmcia_map.size = t->dev[0].size;
402 for(i = 0; i < t->ndev; i++) {
403 DEBUG(2, "Region %d, type = %u", i, t->dev[i].type);
404 DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp);
405 DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed);
406 DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size);
407 }
408 break;
409 }
69f34c98 410
1da177e4
LT		 411 case CISTPL_VERS_1: {
412 cistpl_vers_1_t *t = &parse.version_1;
413 int i;
414 if(t->ns) {
415 dev->mtd_name[0] = '\0';
416 for(i = 0; i < t->ns; i++) {
417 if(i)
418 strcat(dev->mtd_name, " ");
419 strcat(dev->mtd_name, t->str+t->ofs[i]);
420 }
421 }
422 DEBUG(2, "Found name: %s", dev->mtd_name);
423 break;
424 }
69f34c98 425
1da177e4
LT		 426 case CISTPL_JEDEC_C: {
427 cistpl_jedec_t *t = &parse.jedec;
428 int i;
429 for(i = 0; i < t->nid; i++) {
430 DEBUG(2, "JEDEC: 0x%02x 0x%02x", t->id[i].mfr, t->id[i].info);
431 }
432 break;
433 }
69f34c98 434
1da177e4
LT		 435 case CISTPL_DEVICE_GEO: {
436 cistpl_device_geo_t *t = &parse.device_geo;
437 int i;
438 dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
439 for(i = 0; i < t->ngeo; i++) {
440 DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth);
441 DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block);
442 DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block);
443 DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block);
444 DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition);
445 DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave);
446 }
447 break;
448 }
69f34c98 449
1da177e4
LT		 450 default:
451 DEBUG(2, "Unknown tuple code %d", tuple.TupleCode);
452 }
69f34c98 453
1da177e4
LT		 454 rc = pcmcia_get_next_tuple(link->handle, &tuple);
455 }
456 if(!dev->pcmcia_map.size)
457 dev->pcmcia_map.size = MAX_PCMCIA_ADDR;
458
459 if(!dev->pcmcia_map.bankwidth)
460 dev->pcmcia_map.bankwidth = 2;
461
462 if(force_size) {
463 dev->pcmcia_map.size = force_size << 20;
464 DEBUG(2, "size forced to %dM", force_size);
465 }
466
467 if(bankwidth) {
468 dev->pcmcia_map.bankwidth = bankwidth;
469 DEBUG(2, "bankwidth forced to %d", bankwidth);
69f34c98 470 }
1da177e4
LT		 471
472 dev->pcmcia_map.name = dev->mtd_name;
473 if(!dev->mtd_name[0]) {
474 strcpy(dev->mtd_name, "PCMCIA Memory card");
475 *new_name = 1;
476 }
477
478 DEBUG(1, "Device: Size: %lu Width:%d Name: %s",
479 dev->pcmcia_map.size, dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
480}
481
482
483/* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event
484 * is received, to configure the PCMCIA socket, and to make the
485 * MTD device available to the system.
486 */
487
488#define CS_CHECK(fn, ret) \
489do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
490
491static void pcmciamtd_config(dev_link_t *link)
492{
493 struct pcmciamtd_dev *dev = link->priv;
494 struct mtd_info *mtd = NULL;
495 cs_status_t status;
496 win_req_t req;
497 int last_ret = 0, last_fn = 0;
498 int ret;
499 int i;
500 config_info_t t;
501 static char *probes[] = { "jedec_probe", "cfi_probe" };
502 cisinfo_t cisinfo;
503 int new_name = 0;
504
505 DEBUG(3, "link=0x%p", link);
506
507 /* Configure card */
508 link->state |= DEV_CONFIG;
509
510 DEBUG(2, "Validating CIS");
511 ret = pcmcia_validate_cis(link->handle, &cisinfo);
512 if(ret != CS_SUCCESS) {
513 cs_error(link->handle, GetTupleData, ret);
514 } else {
515 DEBUG(2, "ValidateCIS found %d chains", cisinfo.Chains);
516 }
517
518 card_settings(dev, link, &new_name);
519
520 dev->pcmcia_map.phys = NO_XIP;
521 dev->pcmcia_map.copy_from = pcmcia_copy_from_remap;
522 dev->pcmcia_map.copy_to = pcmcia_copy_to_remap;
523 if (dev->pcmcia_map.bankwidth == 1) {
524 dev->pcmcia_map.read = pcmcia_read8_remap;
525 dev->pcmcia_map.write = pcmcia_write8_remap;
526 } else {
527 dev->pcmcia_map.read = pcmcia_read16_remap;
528 dev->pcmcia_map.write = pcmcia_write16_remap;
529 }
530 if(setvpp == 1)
531 dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp;
532
533 /* Request a memory window for PCMCIA. Some architeures can map windows upto the maximum
534 that PCMCIA can support (64MiB) - this is ideal and we aim for a window the size of the
535 whole card - otherwise we try smaller windows until we succeed */
536
537 req.Attributes = WIN_MEMORY_TYPE_CM | WIN_ENABLE;
538 req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
539 req.Base = 0;
540 req.AccessSpeed = mem_speed;
541 link->win = (window_handle_t)link->handle;
542 req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR;
543 dev->win_size = 0;
544
545 do {
546 int ret;
547 DEBUG(2, "requesting window with size = %dKiB memspeed = %d",
548 req.Size >> 10, req.AccessSpeed);
549 ret = pcmcia_request_window(&link->handle, &req, &link->win);
550 DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size);
551 if(ret) {
552 req.Size >>= 1;
553 } else {
554 DEBUG(2, "Got window of size %dKiB", req.Size >> 10);
555 dev->win_size = req.Size;
556 break;
557 }
558 } while(req.Size >= 0x1000);
559
560 DEBUG(2, "dev->win_size = %d", dev->win_size);
561
562 if(!dev->win_size) {
563 err("Cant allocate memory window");
564 pcmciamtd_release(link);
565 return;
566 }
567 DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);
69f34c98 568
1da177e4
LT		 569 /* Get write protect status */
570 CS_CHECK(GetStatus, pcmcia_get_status(link->handle, &status));
571 DEBUG(2, "status value: 0x%x window handle = 0x%8.8lx",
572 status.CardState, (unsigned long)link->win);
573 dev->win_base = ioremap(req.Base, req.Size);
574 if(!dev->win_base) {
575 err("ioremap(%lu, %u) failed", req.Base, req.Size);
576 pcmciamtd_release(link);
577 return;
578 }
579 DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x",
580 dev, req.Base, dev->win_base, req.Size);
581
582 dev->offset = 0;
583 dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
584 dev->pcmcia_map.map_priv_2 = (unsigned long)link->win;
585
586 DEBUG(2, "Getting configuration");
587 CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(link->handle, &t));
588 DEBUG(2, "Vcc = %d Vpp1 = %d Vpp2 = %d", t.Vcc, t.Vpp1, t.Vpp2);
589 dev->vpp = (vpp) ? vpp : t.Vpp1;
590 link->conf.Attributes = 0;
591 link->conf.Vcc = t.Vcc;
592 if(setvpp == 2) {
593 link->conf.Vpp1 = dev->vpp;
594 link->conf.Vpp2 = dev->vpp;
595 } else {
596 link->conf.Vpp1 = 0;
597 link->conf.Vpp2 = 0;
598 }
599
600 link->conf.IntType = INT_MEMORY;
601 link->conf.ConfigBase = t.ConfigBase;
602 link->conf.Status = t.Status;
603 link->conf.Pin = t.Pin;
604 link->conf.Copy = t.Copy;
605 link->conf.ExtStatus = t.ExtStatus;
606 link->conf.ConfigIndex = 0;
607 link->conf.Present = t.Present;
608 DEBUG(2, "Setting Configuration");
609 ret = pcmcia_request_configuration(link->handle, &link->conf);
610 if(ret != CS_SUCCESS) {
611 cs_error(link->handle, RequestConfiguration, ret);
612 }
613
614 if(mem_type == 1) {
615 mtd = do_map_probe("map_ram", &dev->pcmcia_map);
616 } else if(mem_type == 2) {
617 mtd = do_map_probe("map_rom", &dev->pcmcia_map);
618 } else {
619 for(i = 0; i < sizeof(probes) / sizeof(char *); i++) {
620 DEBUG(1, "Trying %s", probes[i]);
621 mtd = do_map_probe(probes[i], &dev->pcmcia_map);
622 if(mtd)
623 break;
69f34c98 624
1da177e4
LT		 625 DEBUG(1, "FAILED: %s", probes[i]);
626 }
627 }
69f34c98 628
1da177e4
LT		 629 if(!mtd) {
630 DEBUG(1, "Cant find an MTD");
631 pcmciamtd_release(link);
632 return;
633 }
634
635 dev->mtd_info = mtd;
636 mtd->owner = THIS_MODULE;
637
638 if(new_name) {
639 int size = 0;
640 char unit = ' ';
641 /* Since we are using a default name, make it better by adding in the
642 size */
643 if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */
644 size = mtd->size >> 10;
645 unit = 'K';
646 } else {
647 size = mtd->size >> 20;
648 unit = 'M';
649 }
650 snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card");
651 }
652
653 /* If the memory found is fits completely into the mapped PCMCIA window,
654 use the faster non-remapping read/write functions */
655 if(mtd->size <= dev->win_size) {
656 DEBUG(1, "Using non remapping memory functions");
657 dev->pcmcia_map.map_priv_1 = (unsigned long)&(dev->link.state);
658 dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base;
659 if (dev->pcmcia_map.bankwidth == 1) {
660 dev->pcmcia_map.read = pcmcia_read8;
661 dev->pcmcia_map.write = pcmcia_write8;
662 } else {
663 dev->pcmcia_map.read = pcmcia_read16;
664 dev->pcmcia_map.write = pcmcia_write16;
665 }
666 dev->pcmcia_map.copy_from = pcmcia_copy_from;
667 dev->pcmcia_map.copy_to = pcmcia_copy_to;
668 }
669
670 if(add_mtd_device(mtd)) {
671 map_destroy(mtd);
672 dev->mtd_info = NULL;
673 err("Couldnt register MTD device");
674 pcmciamtd_release(link);
675 return;
676 }
677 snprintf(dev->node.dev_name, sizeof(dev->node.dev_name), "mtd%d", mtd->index);
678 info("mtd%d: %s", mtd->index, mtd->name);
679 link->state &= ~DEV_CONFIG_PENDING;
680 link->dev = &dev->node;
681 return;
682
683 cs_failed:
684 cs_error(link->handle, last_fn, last_ret);
685 err("CS Error, exiting");
686 pcmciamtd_release(link);
687 return;
688}
689
690
98e4c28b
DB		 691static int pcmciamtd_suspend(struct pcmcia_device *dev)
692{
693 DEBUG(2, "EVENT_PM_RESUME");
694
695 /* get_lock(link); */
696
697 return 0;
698}
699
700static int pcmciamtd_resume(struct pcmcia_device *dev)
701{
702 DEBUG(2, "EVENT_PM_SUSPEND");
703
704 /* free_lock(link); */
705
706 return 0;
707}
708
1da177e4
LT		 709
710/* This deletes a driver "instance". The device is de-registered
711 * with Card Services. If it has been released, all local data
712 * structures are freed. Otherwise, the structures will be freed
713 * when the device is released.
714 */
715
cc3b4866 716static void pcmciamtd_detach(struct pcmcia_device *p_dev)
1da177e4 717{
cc3b4866
DB		 718 dev_link_t *link = dev_to_instance(p_dev);
719
1da177e4
LT		 720 DEBUG(3, "link=0x%p", link);
721
722 if(link->state & DEV_CONFIG) {
cc3b4866
DB		 723 struct pcmciamtd_dev *dev = link->priv;
724 if(dev->mtd_info) {
725 del_mtd_device(dev->mtd_info);
726 info("mtd%d: Removed", dev->mtd_info->index);
727 }
1da177e4 728
cc3b4866 729 pcmciamtd_release(link);
1da177e4 730 }
1da177e4
LT		 731}
732
733
734/* pcmciamtd_attach() creates an "instance" of the driver, allocating
735 * local data structures for one device. The device is registered
736 * with Card Services.
737 */
738
f8cfa618 739static int pcmciamtd_attach(struct pcmcia_device *p_dev)
1da177e4
LT		 740{
741 struct pcmciamtd_dev *dev;
742 dev_link_t *link;
1da177e4
LT		 743
744 /* Create new memory card device */
745 dev = kmalloc(sizeof(*dev), GFP_KERNEL);
f8cfa618 746 if (!dev) return -ENOMEM;
1da177e4
LT		 747 DEBUG(1, "dev=0x%p", dev);
748
749 memset(dev, 0, sizeof(*dev));
750 link = &dev->link;
751 link->priv = dev;
752
753 link->conf.Attributes = 0;
754 link->conf.IntType = INT_MEMORY;
755
b4635811 756 link->next = NULL;
f8cfa618
DB		 757 link->handle = p_dev;
758 p_dev->instance = link;
1da177e4 759
f8cfa618
DB		 760 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
761 pcmciamtd_config(link);
762
763 return 0;
1da177e4
LT		 764}
765
11d28a30
DB		 766static struct pcmcia_device_id pcmciamtd_ids[] = {
767 PCMCIA_DEVICE_FUNC_ID(1),
768 PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21),
769 PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21),
770 PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a),
771 PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e),
772 PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf),
773 PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb),
774 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c),
775 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda),
776 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0),
777 PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8),
778 PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c),
779 PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0),
780 PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
781 PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
782 PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca),
783 PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944),
784 /* the following was commented out in pcmcia-cs-3.2.7 */
785 /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */
786#ifdef CONFIG_MTD_PCMCIA_ANONYMOUS
787 { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, },
788#endif
789 PCMCIA_DEVICE_NULL
790};
791MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids);
1da177e4
LT		 792
793static struct pcmcia_driver pcmciamtd_driver = {
794 .drv = {
795 .name = "pcmciamtd"
796 },
f8cfa618 797 .probe = pcmciamtd_attach,
cc3b4866 798 .remove = pcmciamtd_detach,
11d28a30
DB		 799 .owner = THIS_MODULE,
800 .id_table = pcmciamtd_ids,
98e4c28b
DB		 801 .suspend = pcmciamtd_suspend,
802 .resume = pcmciamtd_resume,
1da177e4
LT		 803};
804
805
806static int __init init_pcmciamtd(void)
807{
808 info(DRIVER_DESC " " DRIVER_VERSION);
809
810 if(bankwidth && bankwidth != 1 && bankwidth != 2) {
811 info("bad bankwidth (%d), using default", bankwidth);
812 bankwidth = 2;
813 }
814 if(force_size && (force_size < 1 || force_size > 64)) {
815 info("bad force_size (%d), using default", force_size);
816 force_size = 0;
817 }
818 if(mem_type && mem_type != 1 && mem_type != 2) {
819 info("bad mem_type (%d), using default", mem_type);
820 mem_type = 0;
821 }
822 return pcmcia_register_driver(&pcmciamtd_driver);
823}
824
825
826static void __exit exit_pcmciamtd(void)
827{
828 DEBUG(1, DRIVER_DESC " unloading");
829 pcmcia_unregister_driver(&pcmciamtd_driver);
1da177e4
LT		 830}
831
832module_init(init_pcmciamtd);
833module_exit(exit_pcmciamtd);
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