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x86: arch/x86/mm/init_32.c cleanup
[wrt350n-kernel.git] / drivers / mtd / maps / pcmciamtd.c
blobeaeb56a4070acadbe9633fddad14bc8b69a0f829
1 /*
2 * $Id: pcmciamtd.c,v 1.55 2005/11/07 11:14:28 gleixner Exp $
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
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
30 static int debug = CONFIG_MTD_DEBUG_VERBOSE;
31 module_param(debug, int, 0);
32 MODULE_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...)
42 static 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"
51 #define DRIVER_VERSION "$Revision: 1.55 $"
52
53 /* Size of the PCMCIA address space: 26 bits = 64 MB */
54 #define MAX_PCMCIA_ADDR 0x4000000
55
56 struct pcmciamtd_dev {
57 struct pcmcia_device *p_dev;
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
69 /* Module parameters */
70
71 /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */
72 static int bankwidth = 2;
73
74 /* Speed of memory accesses, in ns */
75 static int mem_speed;
76
77 /* Force the size of an SRAM card */
78 static int force_size;
79
80 /* Force Vpp */
81 static int vpp;
82
83 /* Set Vpp */
84 static int setvpp;
85
86 /* Force card to be treated as FLASH, ROM or RAM */
87 static int mem_type;
88
89 MODULE_LICENSE("GPL");
90 MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>");
91 MODULE_DESCRIPTION(DRIVER_DESC);
92 module_param(bankwidth, int, 0);
93 MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)");
94 module_param(mem_speed, int, 0);
95 MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns");
96 module_param(force_size, int, 0);
97 MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)");
98 module_param(setvpp, int, 0);
99 MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)");
100 module_param(vpp, int, 0);
101 MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)");
102 module_param(mem_type, int, 0);
103 MODULE_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 */
107 static 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 (!pcmcia_dev_present(dev->p_dev)) {
115 DEBUG(1, "device removed");
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->p_dev, 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
134 static 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
149 static 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
164 static 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;
176
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
190 static 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
202 static 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
213 static 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) (!(pcmcia_dev_present(((struct pcmciamtd_dev *)map->map_priv_1)->p_dev)))
242
243 static 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
257 static 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
271 static 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
283 static 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
295 static 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
307 static 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
319 static void pcmciamtd_set_vpp(struct map_info *map, int on)
320 {
321 struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1;
322 struct pcmcia_device *link = dev->p_dev;
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, &mod);
332 if(ret != CS_SUCCESS) {
333 cs_error(link, 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
343 static void pcmciamtd_release(struct pcmcia_device *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_disable_device(link);
357 }
358
359
360 static void card_settings(struct pcmciamtd_dev *dev, struct pcmcia_device *link, int *new_name)
361 {
362 int rc;
363 tuple_t tuple;
364 cisparse_t parse;
365 u_char buf[64];
366
367 tuple.Attributes = 0;
368 tuple.TupleData = (cisdata_t *)buf;
369 tuple.TupleDataMax = sizeof(buf);
370 tuple.TupleOffset = 0;
371 tuple.DesiredTuple = RETURN_FIRST_TUPLE;
372
373 rc = pcmcia_get_first_tuple(link, &tuple);
374 while(rc == CS_SUCCESS) {
375 rc = pcmcia_get_tuple_data(link, &tuple);
376 if(rc != CS_SUCCESS) {
377 cs_error(link, GetTupleData, rc);
378 break;
379 }
380 rc = pcmcia_parse_tuple(link, &tuple, &parse);
381 if(rc != CS_SUCCESS) {
382 cs_error(link, ParseTuple, rc);
383 break;
384 }
385
386 switch(tuple.TupleCode) {
387 case CISTPL_FORMAT: {
388 cistpl_format_t *t = &parse.format;
389 (void)t; /* Shut up, gcc */
390 DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u",
391 t->type, t->edc, t->offset, t->length);
392 break;
393
394 }
395
396 case CISTPL_DEVICE: {
397 cistpl_device_t *t = &parse.device;
398 int i;
399 DEBUG(2, "Common memory:");
400 dev->pcmcia_map.size = t->dev[0].size;
401 for(i = 0; i < t->ndev; i++) {
402 DEBUG(2, "Region %d, type = %u", i, t->dev[i].type);
403 DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp);
404 DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed);
405 DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size);
406 }
407 break;
408 }
409
410 case CISTPL_VERS_1: {
411 cistpl_vers_1_t *t = &parse.version_1;
412 int i;
413 if(t->ns) {
414 dev->mtd_name[0] = '\0';
415 for(i = 0; i < t->ns; i++) {
416 if(i)
417 strcat(dev->mtd_name, " ");
418 strcat(dev->mtd_name, t->str+t->ofs[i]);
419 }
420 }
421 DEBUG(2, "Found name: %s", dev->mtd_name);
422 break;
423 }
424
425 case CISTPL_JEDEC_C: {
426 cistpl_jedec_t *t = &parse.jedec;
427 int i;
428 for(i = 0; i < t->nid; i++) {
429 DEBUG(2, "JEDEC: 0x%02x 0x%02x", t->id[i].mfr, t->id[i].info);
430 }
431 break;
432 }
433
434 case CISTPL_DEVICE_GEO: {
435 cistpl_device_geo_t *t = &parse.device_geo;
436 int i;
437 dev->pcmcia_map.bankwidth = t->geo[0].buswidth;
438 for(i = 0; i < t->ngeo; i++) {
439 DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth);
440 DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block);
441 DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block);
442 DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block);
443 DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition);
444 DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave);
445 }
446 break;
447 }
448
449 default:
450 DEBUG(2, "Unknown tuple code %d", tuple.TupleCode);
451 }
452
453 rc = pcmcia_get_next_tuple(link, &tuple);
454 }
455 if(!dev->pcmcia_map.size)
456 dev->pcmcia_map.size = MAX_PCMCIA_ADDR;
457
458 if(!dev->pcmcia_map.bankwidth)
459 dev->pcmcia_map.bankwidth = 2;
460
461 if(force_size) {
462 dev->pcmcia_map.size = force_size << 20;
463 DEBUG(2, "size forced to %dM", force_size);
464 }
465
466 if(bankwidth) {
467 dev->pcmcia_map.bankwidth = bankwidth;
468 DEBUG(2, "bankwidth forced to %d", bankwidth);
469 }
470
471 dev->pcmcia_map.name = dev->mtd_name;
472 if(!dev->mtd_name[0]) {
473 strcpy(dev->mtd_name, "PCMCIA Memory card");
474 *new_name = 1;
475 }
476
477 DEBUG(1, "Device: Size: %lu Width:%d Name: %s",
478 dev->pcmcia_map.size, dev->pcmcia_map.bankwidth << 3, dev->mtd_name);
479 }
480
481
482 /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event
483 * is received, to configure the PCMCIA socket, and to make the
484 * MTD device available to the system.
485 */
486
487 #define CS_CHECK(fn, ret) \
488 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
489
490 static int pcmciamtd_config(struct pcmcia_device *link)
491 {
492 struct pcmciamtd_dev *dev = link->priv;
493 struct mtd_info *mtd = NULL;
494 cs_status_t status;
495 win_req_t req;
496 int last_ret = 0, last_fn = 0;
497 int ret;
498 int i;
499 config_info_t t;
500 static char *probes[] = { "jedec_probe", "cfi_probe" };
501 cisinfo_t cisinfo;
502 int new_name = 0;
503
504 DEBUG(3, "link=0x%p", link);
505
506 DEBUG(2, "Validating CIS");
507 ret = pcmcia_validate_cis(link, &cisinfo);
508 if(ret != CS_SUCCESS) {
509 cs_error(link, GetTupleData, ret);
510 } else {
511 DEBUG(2, "ValidateCIS found %d chains", cisinfo.Chains);
512 }
513
514 card_settings(dev, link, &new_name);
515
516 dev->pcmcia_map.phys = NO_XIP;
517 dev->pcmcia_map.copy_from = pcmcia_copy_from_remap;
518 dev->pcmcia_map.copy_to = pcmcia_copy_to_remap;
519 if (dev->pcmcia_map.bankwidth == 1) {
520 dev->pcmcia_map.read = pcmcia_read8_remap;
521 dev->pcmcia_map.write = pcmcia_write8_remap;
522 } else {
523 dev->pcmcia_map.read = pcmcia_read16_remap;
524 dev->pcmcia_map.write = pcmcia_write16_remap;
525 }
526 if(setvpp == 1)
527 dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp;
528
529 /* Request a memory window for PCMCIA. Some architeures can map windows upto the maximum
530 that PCMCIA can support (64MiB) - this is ideal and we aim for a window the size of the
531 whole card - otherwise we try smaller windows until we succeed */
532
533 req.Attributes = WIN_MEMORY_TYPE_CM | WIN_ENABLE;
534 req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16;
535 req.Base = 0;
536 req.AccessSpeed = mem_speed;
537 link->win = (window_handle_t)link;
538 req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR;
539 dev->win_size = 0;
540
541 do {
542 int ret;
543 DEBUG(2, "requesting window with size = %dKiB memspeed = %d",
544 req.Size >> 10, req.AccessSpeed);
545 ret = pcmcia_request_window(&link, &req, &link->win);
546 DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size);
547 if(ret) {
548 req.Size >>= 1;
549 } else {
550 DEBUG(2, "Got window of size %dKiB", req.Size >> 10);
551 dev->win_size = req.Size;
552 break;
553 }
554 } while(req.Size >= 0x1000);
555
556 DEBUG(2, "dev->win_size = %d", dev->win_size);
557
558 if(!dev->win_size) {
559 err("Cant allocate memory window");
560 pcmciamtd_release(link);
561 return -ENODEV;
562 }
563 DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10);
564
565 /* Get write protect status */
566 CS_CHECK(GetStatus, pcmcia_get_status(link, &status));
567 DEBUG(2, "status value: 0x%x window handle = 0x%8.8lx",
568 status.CardState, (unsigned long)link->win);
569 dev->win_base = ioremap(req.Base, req.Size);
570 if(!dev->win_base) {
571 err("ioremap(%lu, %u) failed", req.Base, req.Size);
572 pcmciamtd_release(link);
573 return -ENODEV;
574 }
575 DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x",
576 dev, req.Base, dev->win_base, req.Size);
577
578 dev->offset = 0;
579 dev->pcmcia_map.map_priv_1 = (unsigned long)dev;
580 dev->pcmcia_map.map_priv_2 = (unsigned long)link->win;
581
582 DEBUG(2, "Getting configuration");
583 CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(link, &t));
584 DEBUG(2, "Vcc = %d Vpp1 = %d Vpp2 = %d", t.Vcc, t.Vpp1, t.Vpp2);
585 dev->vpp = (vpp) ? vpp : t.Vpp1;
586 link->conf.Attributes = 0;
587 if(setvpp == 2) {
588 link->conf.Vpp = dev->vpp;
589 } else {
590 link->conf.Vpp = 0;
591 }
592
593 link->conf.IntType = INT_MEMORY;
594 link->conf.ConfigBase = t.ConfigBase;
595 link->conf.Status = t.Status;
596 link->conf.Pin = t.Pin;
597 link->conf.Copy = t.Copy;
598 link->conf.ExtStatus = t.ExtStatus;
599 link->conf.ConfigIndex = 0;
600 link->conf.Present = t.Present;
601 DEBUG(2, "Setting Configuration");
602 ret = pcmcia_request_configuration(link, &link->conf);
603 if(ret != CS_SUCCESS) {
604 cs_error(link, RequestConfiguration, ret);
605 if (dev->win_base) {
606 iounmap(dev->win_base);
607 dev->win_base = NULL;
608 }
609 return -ENODEV;
610 }
611
612 if(mem_type == 1) {
613 mtd = do_map_probe("map_ram", &dev->pcmcia_map);
614 } else if(mem_type == 2) {
615 mtd = do_map_probe("map_rom", &dev->pcmcia_map);
616 } else {
617 for(i = 0; i < ARRAY_SIZE(probes); i++) {
618 DEBUG(1, "Trying %s", probes[i]);
619 mtd = do_map_probe(probes[i], &dev->pcmcia_map);
620 if(mtd)
621 break;
622
623 DEBUG(1, "FAILED: %s", probes[i]);
624 }
625 }
626
627 if(!mtd) {
628 DEBUG(1, "Cant find an MTD");
629 pcmciamtd_release(link);
630 return -ENODEV;
631 }
632
633 dev->mtd_info = mtd;
634 mtd->owner = THIS_MODULE;
635
636 if(new_name) {
637 int size = 0;
638 char unit = ' ';
639 /* Since we are using a default name, make it better by adding in the
640 size */
641 if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */
642 size = mtd->size >> 10;
643 unit = 'K';
644 } else {
645 size = mtd->size >> 20;
646 unit = 'M';
647 }
648 snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card");
649 }
650
651 /* If the memory found is fits completely into the mapped PCMCIA window,
652 use the faster non-remapping read/write functions */
653 if(mtd->size <= dev->win_size) {
654 DEBUG(1, "Using non remapping memory functions");
655 dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base;
656 if (dev->pcmcia_map.bankwidth == 1) {
657 dev->pcmcia_map.read = pcmcia_read8;
658 dev->pcmcia_map.write = pcmcia_write8;
659 } else {
660 dev->pcmcia_map.read = pcmcia_read16;
661 dev->pcmcia_map.write = pcmcia_write16;
662 }
663 dev->pcmcia_map.copy_from = pcmcia_copy_from;
664 dev->pcmcia_map.copy_to = pcmcia_copy_to;
665 }
666
667 if(add_mtd_device(mtd)) {
668 map_destroy(mtd);
669 dev->mtd_info = NULL;
670 err("Couldnt register MTD device");
671 pcmciamtd_release(link);
672 return -ENODEV;
673 }
674 snprintf(dev->node.dev_name, sizeof(dev->node.dev_name), "mtd%d", mtd->index);
675 info("mtd%d: %s", mtd->index, mtd->name);
676 link->dev_node = &dev->node;
677 return 0;
678
679 cs_failed:
680 cs_error(link, last_fn, last_ret);
681 err("CS Error, exiting");
682 pcmciamtd_release(link);
683 return -ENODEV;
684 }
685
686
687 static int pcmciamtd_suspend(struct pcmcia_device *dev)
688 {
689 DEBUG(2, "EVENT_PM_RESUME");
690
691 /* get_lock(link); */
692
693 return 0;
694 }
695
696 static int pcmciamtd_resume(struct pcmcia_device *dev)
697 {
698 DEBUG(2, "EVENT_PM_SUSPEND");
699
700 /* free_lock(link); */
701
702 return 0;
703 }
704
705
706 /* This deletes a driver "instance". The device is de-registered
707 * with Card Services. If it has been released, all local data
708 * structures are freed. Otherwise, the structures will be freed
709 * when the device is released.
710 */
711
712 static void pcmciamtd_detach(struct pcmcia_device *link)
713 {
714 struct pcmciamtd_dev *dev = link->priv;
715
716 DEBUG(3, "link=0x%p", link);
717
718 if(dev->mtd_info) {
719 del_mtd_device(dev->mtd_info);
720 map_destroy(dev->mtd_info);
721 info("mtd%d: Removed", dev->mtd_info->index);
722 }
723
724 pcmciamtd_release(link);
725 }
726
727
728 /* pcmciamtd_attach() creates an "instance" of the driver, allocating
729 * local data structures for one device. The device is registered
730 * with Card Services.
731 */
732
733 static int pcmciamtd_probe(struct pcmcia_device *link)
734 {
735 struct pcmciamtd_dev *dev;
736
737 /* Create new memory card device */
738 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
739 if (!dev) return -ENOMEM;
740 DEBUG(1, "dev=0x%p", dev);
741
742 dev->p_dev = link;
743 link->priv = dev;
744
745 link->conf.Attributes = 0;
746 link->conf.IntType = INT_MEMORY;
747
748 return pcmciamtd_config(link);
749 }
750
751 static struct pcmcia_device_id pcmciamtd_ids[] = {
752 PCMCIA_DEVICE_FUNC_ID(1),
753 PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21),
754 PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21),
755 PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a),
756 PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e),
757 PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf),
758 PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb),
759 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c),
760 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda),
761 PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0),
762 PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8),
763 PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c),
764 PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0),
765 PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b),
766 PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad),
767 PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca),
768 PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944),
769 /* the following was commented out in pcmcia-cs-3.2.7 */
770 /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */
771 #ifdef CONFIG_MTD_PCMCIA_ANONYMOUS
772 { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, },
773 #endif
774 PCMCIA_DEVICE_NULL
775 };
776 MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids);
777
778 static struct pcmcia_driver pcmciamtd_driver = {
779 .drv = {
780 .name = "pcmciamtd"
781 },
782 .probe = pcmciamtd_probe,
783 .remove = pcmciamtd_detach,
784 .owner = THIS_MODULE,
785 .id_table = pcmciamtd_ids,
786 .suspend = pcmciamtd_suspend,
787 .resume = pcmciamtd_resume,
788 };
789
790
791 static int __init init_pcmciamtd(void)
792 {
793 info(DRIVER_DESC " " DRIVER_VERSION);
794
795 if(bankwidth && bankwidth != 1 && bankwidth != 2) {
796 info("bad bankwidth (%d), using default", bankwidth);
797 bankwidth = 2;
798 }
799 if(force_size && (force_size < 1 || force_size > 64)) {
800 info("bad force_size (%d), using default", force_size);
801 force_size = 0;
802 }
803 if(mem_type && mem_type != 1 && mem_type != 2) {
804 info("bad mem_type (%d), using default", mem_type);
805 mem_type = 0;
806 }
807 return pcmcia_register_driver(&pcmciamtd_driver);
808 }
809
810
811 static void __exit exit_pcmciamtd(void)
812 {
813 DEBUG(1, DRIVER_DESC " unloading");
814 pcmcia_unregister_driver(&pcmciamtd_driver);
815 }
816
817 module_init(init_pcmciamtd);
818 module_exit(exit_pcmciamtd);
WRT350N Kernel Patches