1 /*
2 * pcmciamtd.c - MTD driver for PCMCIA flash memory cards
3 *
4 * Author: Simon Evans <spse@secret.org.uk>
5 *
6 * Copyright (C) 2002 Simon Evans
7 *
8 * Licence: GPL
9 *
10 */
11
12 #include <linux/module.h>
13 #include <linux/slab.h>
14 #include <linux/timer.h>
15 #include <linux/init.h>
16 #include <asm/io.h>
17
18 #include <pcmcia/cistpl.h>
19 #include <pcmcia/ds.h>
20
21 #include <linux/mtd/map.h>
22 #include <linux/mtd/mtd.h>
23
24 #define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg)
25
26 #define DRIVER_DESC "PCMCIA Flash memory card driver"
27
28 /* Size of the PCMCIA address space: 26 bits = 64 MB */
29 #define MAX_PCMCIA_ADDR 0x4000000
30
31 struct pcmciamtd_dev {
32 struct pcmcia_device *p_dev;
33 void __iomem *win_base; /* ioremapped address of PCMCIA window */
34 unsigned int win_size; /* size of window */
35 unsigned int offset; /* offset into card the window currently points at */
36 struct map_info pcmcia_map;
37 struct mtd_info *mtd_info;
38 int vpp;
39 char mtd_name[sizeof(struct cistpl_vers_1_t)];
40 };
41
42
43 /* Module parameters */
44
45 /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */
46 static int bankwidth = 2;
47
48 /* Speed of memory accesses, in ns */
49 static int mem_speed;
50
51 /* Force the size of an SRAM card */
52 static int force_size;
53
54 /* Force Vpp */
55 static int vpp;
56
57 /* Set Vpp */
58 static int setvpp;
59
60 /* Force card to be treated as FLASH, ROM or RAM */
61 static int mem_type;
62
63 MODULE_LICENSE("GPL");
64 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
65 MODULE_DESCRIPTION(DRIVER_DESC);
66 module_param(bankwidth, int, 0);
67 MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)");
68 module_param(mem_speed, int, 0);
69 MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns");
70 module_param(force_size, int, 0);
71 MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)");
72 module_param(setvpp, int, 0);
73 MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)");
74 module_param(vpp, int, 0);
75 MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)");
76 module_param(mem_type, int, 0);
77 MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)");
78
79
80 /* read/write{8,16} copy_{from,to} routines with window remapping
81 * to access whole card
82 */
remap_window(struct map_info * map,unsigned long to)83 static void __iomem *remap_window(struct map_info *map, unsigned long to)
84 {
85 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
86 struct resource *win = (struct resource *) map->map_priv_2;
87 unsigned int offset;
88 int ret;
89
90 if (!pcmcia_dev_present(dev->p_dev)) {
91 pr_debug("device removed\n");
92 return NULL;
93 }
94
95 offset = to & ~(dev->win_size-1);
96 if (offset != dev->offset) {
97 pr_debug("Remapping window from 0x%8.8x to 0x%8.8x\n",
98 dev->offset, offset);
99 ret = pcmcia_map_mem_page(dev->p_dev, win, offset);
100 if (ret != 0)
101 return NULL;
102 dev->offset = offset;
103 }
104 return dev->win_base + (to & (dev->win_size-1));
105 }
106
107
pcmcia_read8_remap(struct map_info * map,unsigned long ofs)108 static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs)
109 {
110 void __iomem *addr;
111 map_word d = {{0}};
112
113 addr = remap_window(map, ofs);
114 if(!addr)
115 return d;
116
117 d.x[0] = readb(addr);
118 pr_debug("ofs = 0x%08lx (%p) data = 0x%02lx\n", ofs, addr, d.x[0]);
119 return d;
120 }
121
122
pcmcia_read16_remap(struct map_info * map,unsigned long ofs)123 static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs)
124 {
125 void __iomem *addr;
126 map_word d = {{0}};
127
128 addr = remap_window(map, ofs);
129 if(!addr)
130 return d;
131
132 d.x[0] = readw(addr);
133 pr_debug("ofs = 0x%08lx (%p) data = 0x%04lx\n", ofs, addr, d.x[0]);
134 return d;
135 }
136
137
pcmcia_copy_from_remap(struct map_info * map,void * to,unsigned long from,ssize_t len)138 static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len)
139 {
140 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
141 unsigned long win_size = dev->win_size;
142
143 pr_debug("to = %p from = %lu len = %zd\n", to, from, len);
144 while(len) {
145 int toread = win_size - (from & (win_size-1));
146 void __iomem *addr;
147
148 if(toread > len)
149 toread = len;
150
151 addr = remap_window(map, from);
152 if(!addr)
153 return;
154
155 pr_debug("memcpy from %p to %p len = %d\n", addr, to, toread);
156 memcpy_fromio(to, addr, toread);
157 len -= toread;
158 to += toread;
159 from += toread;
160 }
161 }
162
163
pcmcia_write8_remap(struct map_info * map,map_word d,unsigned long adr)164 static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr)
165 {
166 void __iomem *addr = remap_window(map, adr);
167
168 if(!addr)
169 return;
170
171 pr_debug("adr = 0x%08lx (%p) data = 0x%02lx\n", adr, addr, d.x[0]);
172 writeb(d.x[0], addr);
173 }
174
175
pcmcia_write16_remap(struct map_info * map,map_word d,unsigned long adr)176 static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr)
177 {
178 void __iomem *addr = remap_window(map, adr);
179 if(!addr)
180 return;
181
182 pr_debug("adr = 0x%08lx (%p) data = 0x%04lx\n", adr, addr, d.x[0]);
183 writew(d.x[0], addr);
184 }
185
186
pcmcia_copy_to_remap(struct map_info * map,unsigned long to,const void * from,ssize_t len)187 static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len)
188 {
189 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
190 unsigned long win_size = dev->win_size;
191
192 pr_debug("to = %lu from = %p len = %zd\n", to, from, len);
193 while(len) {
194 int towrite = win_size - (to & (win_size-1));
195 void __iomem *addr;
196
197 if(towrite > len)
198 towrite = len;
199
200 addr = remap_window(map, to);
201 if(!addr)
202 return;
203
204 pr_debug("memcpy from %p to %p len = %d\n", from, addr, towrite);
205 memcpy_toio(addr, from, towrite);
206 len -= towrite;
207 to += towrite;
208 from += towrite;
209 }
210 }
211
212
213 /* read/write{8,16} copy_{from,to} routines with direct access */
214
215 #define DEV_REMOVED(x) (!(pcmcia_dev_present(((struct pcmciamtd_dev *)map->map_priv_1)->p_dev)))
216
pcmcia_read8(struct map_info * map,unsigned long ofs)217 static map_word pcmcia_read8(struct map_info *map, unsigned long ofs)
218 {
219 void __iomem *win_base = (void __iomem *)map->map_priv_2;
220 map_word d = {{0}};
221
222 if(DEV_REMOVED(map))
223 return d;
224
225 d.x[0] = readb(win_base + ofs);
226 pr_debug("ofs = 0x%08lx (%p) data = 0x%02lx\n",
227 ofs, win_base + ofs, d.x[0]);
228 return d;
229 }
230
231
pcmcia_read16(struct map_info * map,unsigned long ofs)232 static map_word pcmcia_read16(struct map_info *map, unsigned long ofs)
233 {
234 void __iomem *win_base = (void __iomem *)map->map_priv_2;
235 map_word d = {{0}};
236
237 if(DEV_REMOVED(map))
238 return d;
239
240 d.x[0] = readw(win_base + ofs);
241 pr_debug("ofs = 0x%08lx (%p) data = 0x%04lx\n",
242 ofs, win_base + ofs, d.x[0]);
243 return d;
244 }
245
246
pcmcia_copy_from(struct map_info * map,void * to,unsigned long from,ssize_t len)247 static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len)
248 {
249 void __iomem *win_base = (void __iomem *)map->map_priv_2;
250
251 if(DEV_REMOVED(map))
252 return;
253
254 pr_debug("to = %p from = %lu len = %zd\n", to, from, len);
255 memcpy_fromio(to, win_base + from, len);
256 }
257
258
pcmcia_write8(struct map_info * map,map_word d,unsigned long adr)259 static void pcmcia_write8(struct map_info *map, map_word d, unsigned long adr)
260 {
261 void __iomem *win_base = (void __iomem *)map->map_priv_2;
262
263 if(DEV_REMOVED(map))
264 return;
265
266 pr_debug("adr = 0x%08lx (%p) data = 0x%02lx\n",
267 adr, win_base + adr, d.x[0]);
268 writeb(d.x[0], win_base + adr);
269 }
270
271
pcmcia_write16(struct map_info * map,map_word d,unsigned long adr)272 static void pcmcia_write16(struct map_info *map, map_word d, unsigned long adr)
273 {
274 void __iomem *win_base = (void __iomem *)map->map_priv_2;
275
276 if(DEV_REMOVED(map))
277 return;
278
279 pr_debug("adr = 0x%08lx (%p) data = 0x%04lx\n",
280 adr, win_base + adr, d.x[0]);
281 writew(d.x[0], win_base + adr);
282 }
283
284
pcmcia_copy_to(struct map_info * map,unsigned long to,const void * from,ssize_t len)285 static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len)
286 {
287 void __iomem *win_base = (void __iomem *)map->map_priv_2;
288
289 if(DEV_REMOVED(map))
290 return;
291
292 pr_debug("to = %lu from = %p len = %zd\n", to, from, len);
293 memcpy_toio(win_base + to, from, len);
294 }
295
296
297 static DEFINE_MUTEX(pcmcia_vpp_lock);
298 static int pcmcia_vpp_refcnt;
pcmciamtd_set_vpp(struct map_info * map,int on)299 static void pcmciamtd_set_vpp(struct map_info *map, int on)
300 {
301 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
302 struct pcmcia_device *link = dev->p_dev;
303
304 pr_debug("dev = %p on = %d vpp = %d\n\n", dev, on, dev->vpp);
305 mutex_lock(&pcmcia_vpp_lock);
306 if (on) {
307 if (++pcmcia_vpp_refcnt == 1) /* first nested 'on' */
308 pcmcia_fixup_vpp(link, dev->vpp);
309 } else {
310 if (--pcmcia_vpp_refcnt == 0) /* last nested 'off' */
311 pcmcia_fixup_vpp(link, 0);
312 }
313 mutex_unlock(&pcmcia_vpp_lock);
314 }
315
316
pcmciamtd_release(struct pcmcia_device * link)317 static void pcmciamtd_release(struct pcmcia_device *link)
318 {
319 struct pcmciamtd_dev *dev = link->priv;
320
321 pr_debug("link = 0x%p\n", link);
322
323 if (link->resource[2]->end) {
324 if(dev->win_base) {
325 iounmap(dev->win_base);
326 dev->win_base = NULL;
327 }
328 }
329 pcmcia_disable_device(link);
330 }
331
332
pcmciamtd_cistpl_format(struct pcmcia_device * p_dev,tuple_t * tuple,void * priv_data)333 static int pcmciamtd_cistpl_format(struct pcmcia_device *p_dev,
334 tuple_t *tuple,
335 void *priv_data)
336 {
337 cisparse_t parse;
338
339 if (!pcmcia_parse_tuple(tuple, &parse)) {
340 cistpl_format_t *t = &parse.format;
341 (void)t; /* Shut up, gcc */
342 pr_debug("Format type: %u, Error Detection: %u, offset = %u, length =%u\n",
343 t->type, t->edc, t->offset, t->length);
344 }
345 return -ENOSPC;
346 }
347
pcmciamtd_cistpl_jedec(struct pcmcia_device * p_dev,tuple_t * tuple,void * priv_data)348 static int pcmciamtd_cistpl_jedec(struct pcmcia_device *p_dev,
349 tuple_t *tuple,
350 void *priv_data)
351 {
352 cisparse_t parse;
353 int i;
354
355 if (!pcmcia_parse_tuple(tuple, &parse)) {
356 cistpl_jedec_t *t = &parse.jedec;
357 for (i = 0; i < t->nid; i++)
358 pr_debug("JEDEC: 0x%02x 0x%02x\n",
359 t->id[i].mfr, t->id[i].info);
360 }
361 return -ENOSPC;
362 }
363
pcmciamtd_cistpl_device(struct pcmcia_device * p_dev,tuple_t * tuple,void * priv_data)364 static int pcmciamtd_cistpl_device(struct pcmcia_device *p_dev,
365 tuple_t *tuple,
366 void *priv_data)
367 {
368 struct pcmciamtd_dev *dev = priv_data;
369 cisparse_t parse;
370 cistpl_device_t *t = &parse.device;
371 int i;
372
373 if (pcmcia_parse_tuple(tuple, &parse))
374 return -EINVAL;
375
376 pr_debug("Common memory:\n");
377 dev->pcmcia_map.size = t->dev[0].size;
378 /* from here on: DEBUG only */
379 for (i = 0; i < t->ndev; i++) {
380 pr_debug("Region %d, type = %u\n", i, t->dev[i].type);
381 pr_debug("Region %d, wp = %u\n", i, t->dev[i].wp);
382 pr_debug("Region %d, speed = %u ns\n", i, t->dev[i].speed);
383 pr_debug("Region %d, size = %u bytes\n", i, t->dev[i].size);
384 }
385 return 0;
386 }
387
pcmciamtd_cistpl_geo(struct pcmcia_device * p_dev,tuple_t * tuple,void * priv_data)388 static int pcmciamtd_cistpl_geo(struct pcmcia_device *p_dev,
389 tuple_t *tuple,
390 void *priv_data)
391 {
392 struct pcmciamtd_dev *dev = priv_data;
393 cisparse_t parse;
394 cistpl_device_geo_t *t = &parse.device_geo;
395 int i;
396
397 if (pcmcia_parse_tuple(tuple, &parse))
398 return -EINVAL;
399
400 dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
401 /* from here on: DEBUG only */
402 for (i = 0; i < t->ngeo; i++) {
403 pr_debug("region: %d bankwidth = %u\n", i, t->geo[i].buswidth);
404 pr_debug("region: %d erase_block = %u\n", i, t->geo[i].erase_block);
405 pr_debug("region: %d read_block = %u\n", i, t->geo[i].read_block);
406 pr_debug("region: %d write_block = %u\n", i, t->geo[i].write_block);
407 pr_debug("region: %d partition = %u\n", i, t->geo[i].partition);
408 pr_debug("region: %d interleave = %u\n", i, t->geo[i].interleave);
409 }
410 return 0;
411 }
412
413
card_settings(struct pcmciamtd_dev * dev,struct pcmcia_device * p_dev,int * new_name)414 static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *p_dev, int *new_name)
415 {
416 int i;
417
418 if (p_dev->prod_id[0]) {
419 dev->mtd_name[0] = '\0';
420 for (i = 0; i < 4; i++) {
421 if (i)
422 strcat(dev->mtd_name, " ");
423 if (p_dev->prod_id[i])
424 strcat(dev->mtd_name, p_dev->prod_id[i]);
425 }
426 pr_debug("Found name: %s\n", dev->mtd_name);
427 }
428
429 pcmcia_loop_tuple(p_dev, CISTPL_FORMAT, pcmciamtd_cistpl_format, NULL);
430 pcmcia_loop_tuple(p_dev, CISTPL_JEDEC_C, pcmciamtd_cistpl_jedec, NULL);
431 pcmcia_loop_tuple(p_dev, CISTPL_DEVICE, pcmciamtd_cistpl_device, dev);
432 pcmcia_loop_tuple(p_dev, CISTPL_DEVICE_GEO, pcmciamtd_cistpl_geo, dev);
433
434 if(!dev->pcmcia_map.size)
435 dev->pcmcia_map.size = MAX_PCMCIA_ADDR;
436
437 if(!dev->pcmcia_map.bankwidth)
438 dev->pcmcia_map.bankwidth = 2;
439
440 if(force_size) {
441 dev->pcmcia_map.size = force_size << 20;
442 pr_debug("size forced to %dM\n", force_size);
443 }
444
445 if(bankwidth) {
446 dev->pcmcia_map.bankwidth = bankwidth;
447 pr_debug("bankwidth forced to %d\n", bankwidth);
448 }
449
450 dev->pcmcia_map.name = dev->mtd_name;
451 if(!dev->mtd_name[0]) {
452 strcpy(dev->mtd_name, "PCMCIA Memory card");
453 *new_name = 1;
454 }
455
456 pr_debug("Device: Size: %lu Width:%d Name: %s\n",
457 dev->pcmcia_map.size,
458 dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
459 }
460
461
pcmciamtd_config(struct pcmcia_device * link)462 static int pcmciamtd_config(struct pcmcia_device *link)
463 {
464 struct pcmciamtd_dev *dev = link->priv;
465 struct mtd_info *mtd = NULL;
466 int ret;
467 int i, j = 0;
468 static char *probes[] = { "jedec_probe", "cfi_probe" };
469 int new_name = 0;
470
471 pr_debug("link=0x%p\n", link);
472
473 card_settings(dev, link, &new_name);
474
475 dev->pcmcia_map.phys = NO_XIP;
476 dev->pcmcia_map.copy_from = pcmcia_copy_from_remap;
477 dev->pcmcia_map.copy_to = pcmcia_copy_to_remap;
478 if (dev->pcmcia_map.bankwidth == 1) {
479 dev->pcmcia_map.read = pcmcia_read8_remap;
480 dev->pcmcia_map.write = pcmcia_write8_remap;
481 } else {
482 dev->pcmcia_map.read = pcmcia_read16_remap;
483 dev->pcmcia_map.write = pcmcia_write16_remap;
484 }
485 if(setvpp == 1)
486 dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp;
487
488 /* Request a memory window for PCMCIA. Some architeures can map windows
489 * up to the maximum that PCMCIA can support (64MiB) - this is ideal and
490 * we aim for a window the size of the whole card - otherwise we try
491 * smaller windows until we succeed
492 */
493
494 link->resource[2]->flags |= WIN_MEMORY_TYPE_CM | WIN_ENABLE;
495 link->resource[2]->flags |= (dev->pcmcia_map.bankwidth == 1) ?
496 WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
497 link->resource[2]->start = 0;
498 link->resource[2]->end = (force_size) ? force_size << 20 :
499 MAX_PCMCIA_ADDR;
500 dev->win_size = 0;
501
502 do {
503 int ret;
504 pr_debug("requesting window with size = %luKiB memspeed = %d\n",
505 (unsigned long) resource_size(link->resource[2]) >> 10,
506 mem_speed);
507 ret = pcmcia_request_window(link, link->resource[2], mem_speed);
508 pr_debug("ret = %d dev->win_size = %d\n", ret, dev->win_size);
509 if(ret) {
510 j++;
511 link->resource[2]->start = 0;
512 link->resource[2]->end = (force_size) ?
513 force_size << 20 : MAX_PCMCIA_ADDR;
514 link->resource[2]->end >>= j;
515 } else {
516 pr_debug("Got window of size %luKiB\n", (unsigned long)
517 resource_size(link->resource[2]) >> 10);
518 dev->win_size = resource_size(link->resource[2]);
519 break;
520 }
521 } while (link->resource[2]->end >= 0x1000);
522
523 pr_debug("dev->win_size = %d\n", dev->win_size);
524
525 if(!dev->win_size) {
526 dev_err(&dev->p_dev->dev, "Cannot allocate memory window\n");
527 pcmciamtd_release(link);
528 return -ENODEV;
529 }
530 pr_debug("Allocated a window of %dKiB\n", dev->win_size >> 10);
531
532 /* Get write protect status */
533 dev->win_base = ioremap(link->resource[2]->start,
534 resource_size(link->resource[2]));
535 if(!dev->win_base) {
536 dev_err(&dev->p_dev->dev, "ioremap(%pR) failed\n",
537 link->resource[2]);
538 pcmciamtd_release(link);
539 return -ENODEV;
540 }
541 pr_debug("mapped window dev = %p @ %pR, base = %p\n",
542 dev, link->resource[2], dev->win_base);
543
544 dev->offset = 0;
545 dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
546 dev->pcmcia_map.map_priv_2 = (unsigned long)link->resource[2];
547
548 dev->vpp = (vpp) ? vpp : link->socket->socket.Vpp;
549 if(setvpp == 2) {
550 link->vpp = dev->vpp;
551 } else {
552 link->vpp = 0;
553 }
554
555 link->config_index = 0;
556 pr_debug("Setting Configuration\n");
557 ret = pcmcia_enable_device(link);
558 if (ret != 0) {
559 if (dev->win_base) {
560 iounmap(dev->win_base);
561 dev->win_base = NULL;
562 }
563 return -ENODEV;
564 }
565
566 if(mem_type == 1) {
567 mtd = do_map_probe("map_ram", &dev->pcmcia_map);
568 } else if(mem_type == 2) {
569 mtd = do_map_probe("map_rom", &dev->pcmcia_map);
570 } else {
571 for(i = 0; i < ARRAY_SIZE(probes); i++) {
572 pr_debug("Trying %s\n", probes[i]);
573 mtd = do_map_probe(probes[i], &dev->pcmcia_map);
574 if(mtd)
575 break;
576
577 pr_debug("FAILED: %s\n", probes[i]);
578 }
579 }
580
581 if(!mtd) {
582 pr_debug("Can not find an MTD\n");
583 pcmciamtd_release(link);
584 return -ENODEV;
585 }
586
587 dev->mtd_info = mtd;
588 mtd->owner = THIS_MODULE;
589
590 if(new_name) {
591 int size = 0;
592 char unit = ' ';
593 /* Since we are using a default name, make it better by adding
594 * in the size
595 */
596 if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */
597 size = mtd->size >> 10;
598 unit = 'K';
599 } else {
600 size = mtd->size >> 20;
601 unit = 'M';
602 }
603 snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card");
604 }
605
606 /* If the memory found is fits completely into the mapped PCMCIA window,
607 use the faster non-remapping read/write functions */
608 if(mtd->size <= dev->win_size) {
609 pr_debug("Using non remapping memory functions\n");
610 dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base;
611 if (dev->pcmcia_map.bankwidth == 1) {
612 dev->pcmcia_map.read = pcmcia_read8;
613 dev->pcmcia_map.write = pcmcia_write8;
614 } else {
615 dev->pcmcia_map.read = pcmcia_read16;
616 dev->pcmcia_map.write = pcmcia_write16;
617 }
618 dev->pcmcia_map.copy_from = pcmcia_copy_from;
619 dev->pcmcia_map.copy_to = pcmcia_copy_to;
620 }
621
622 if (mtd_device_register(mtd, NULL, 0)) {
623 map_destroy(mtd);
624 dev->mtd_info = NULL;
625 dev_err(&dev->p_dev->dev,
626 "Could not register the MTD device\n");
627 pcmciamtd_release(link);
628 return -ENODEV;
629 }
630 dev_info(&dev->p_dev->dev, "mtd%d: %s\n", mtd->index, mtd->name);
631 return 0;
632 }
633
634
pcmciamtd_suspend(struct pcmcia_device * dev)635 static int pcmciamtd_suspend(struct pcmcia_device *dev)
636 {
637 pr_debug("EVENT_PM_RESUME\n");
638
639 /* get_lock(link); */
640
641 return 0;
642 }
643
pcmciamtd_resume(struct pcmcia_device * dev)644 static int pcmciamtd_resume(struct pcmcia_device *dev)
645 {
646 pr_debug("EVENT_PM_SUSPEND\n");
647
648 /* free_lock(link); */
649
650 return 0;
651 }
652
653
pcmciamtd_detach(struct pcmcia_device * link)654 static void pcmciamtd_detach(struct pcmcia_device *link)
655 {
656 struct pcmciamtd_dev *dev = link->priv;
657
658 pr_debug("link=0x%p\n", link);
659
660 if(dev->mtd_info) {
661 mtd_device_unregister(dev->mtd_info);
662 dev_info(&dev->p_dev->dev, "mtd%d: Removing\n",
663 dev->mtd_info->index);
664 map_destroy(dev->mtd_info);
665 }
666
667 pcmciamtd_release(link);
668 }
669
670
pcmciamtd_probe(struct pcmcia_device * link)671 static int pcmciamtd_probe(struct pcmcia_device *link)
672 {
673 struct pcmciamtd_dev *dev;
674
675 /* Create new memory card device */
676 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
677 if (!dev) return -ENOMEM;
678 pr_debug("dev=0x%p\n", dev);
679
680 dev->p_dev = link;
681 link->priv = dev;
682
683 return pcmciamtd_config(link);
684 }
685
686 static const struct pcmcia_device_id pcmciamtd_ids[] = {
687 PCMCIA_DEVICE_FUNC_ID(1),
688 PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21),
689 PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21),
690 PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a),
691 PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e),
692 PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf),
693 PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb),
694 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c),
695 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda),
696 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0),
697 PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8),
698 PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c),
699 PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0),
700 PCMCIA_DEVICE_PROD_ID123("M-Systems", "M-SYS Flash Memory Card", "(c) M-Systems", 0x7ed2ad87, 0x675dc3fb, 0x7aef3965),
701 PCMCIA_DEVICE_PROD_ID12("PRETEC", " 2MB SRAM CARD", 0xebf91155, 0x805360ca),
702 PCMCIA_DEVICE_PROD_ID12("PRETEC", " 4MB SRAM CARD", 0xebf91155, 0x20b6bf17),
703 PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
704 PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
705 PCMCIA_DEVICE_PROD_ID12("SMART Modular Technologies", " 4MB FLASH Card", 0x96fd8277, 0x737a5b05),
706 PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca),
707 PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944),
708 /* the following was commented out in pcmcia-cs-3.2.7 */
709 /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */
710 #ifdef CONFIG_MTD_PCMCIA_ANONYMOUS
711 { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, },
712 #endif
713 PCMCIA_DEVICE_NULL
714 };
715 MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids);
716
717 static struct pcmcia_driver pcmciamtd_driver = {
718 .name = "pcmciamtd",
719 .probe = pcmciamtd_probe,
720 .remove = pcmciamtd_detach,
721 .owner = THIS_MODULE,
722 .id_table = pcmciamtd_ids,
723 .suspend = pcmciamtd_suspend,
724 .resume = pcmciamtd_resume,
725 };
726
727
init_pcmciamtd(void)728 static int __init init_pcmciamtd(void)
729 {
730 if(bankwidth && bankwidth != 1 && bankwidth != 2) {
731 info("bad bankwidth (%d), using default", bankwidth);
732 bankwidth = 2;
733 }
734 if(force_size && (force_size < 1 || force_size > 64)) {
735 info("bad force_size (%d), using default", force_size);
736 force_size = 0;
737 }
738 if(mem_type && mem_type != 1 && mem_type != 2) {
739 info("bad mem_type (%d), using default", mem_type);
740 mem_type = 0;
741 }
742 return pcmcia_register_driver(&pcmciamtd_driver);
743 }
744
745
exit_pcmciamtd(void)746 static void __exit exit_pcmciamtd(void)
747 {
748 pr_debug(DRIVER_DESC " unloading");
749 pcmcia_unregister_driver(&pcmciamtd_driver);
750 }
751
752 module_init(init_pcmciamtd);
753 module_exit(exit_pcmciamtd);
754