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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 | |
30 | static int debug = CONFIG_MTD_DEBUG_VERBOSE; | |
31 | MODULE_PARM(debug, "i"); | |
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" | |
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 | ||
56 | struct 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 | ||
69 | static dev_info_t dev_info = "pcmciamtd"; | |
70 | static dev_link_t *dev_list; | |
71 | ||
72 | /* Module parameters */ | |
73 | ||
74 | /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */ | |
75 | static int bankwidth = 2; | |
76 | ||
77 | /* Speed of memory accesses, in ns */ | |
78 | static int mem_speed; | |
79 | ||
80 | /* Force the size of an SRAM card */ | |
81 | static int force_size; | |
82 | ||
83 | /* Force Vpp */ | |
84 | static int vpp; | |
85 | ||
86 | /* Set Vpp */ | |
87 | static int setvpp; | |
88 | ||
89 | /* Force card to be treated as FLASH, ROM or RAM */ | |
90 | static int mem_type; | |
91 | ||
92 | MODULE_LICENSE("GPL"); | |
93 | MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>"); | |
94 | MODULE_DESCRIPTION(DRIVER_DESC); | |
95 | MODULE_PARM(bankwidth, "i"); | |
96 | MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)"); | |
97 | MODULE_PARM(mem_speed, "i"); | |
98 | MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns"); | |
99 | MODULE_PARM(force_size, "i"); | |
100 | MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)"); | |
101 | MODULE_PARM(setvpp, "i"); | |
102 | MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)"); | |
103 | MODULE_PARM(vpp, "i"); | |
104 | MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)"); | |
105 | MODULE_PARM(mem_type, "i"); | |
106 | MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)"); | |
107 | ||
108 | ||
109 | /* read/write{8,16} copy_{from,to} routines with window remapping to access whole card */ | |
110 | static caddr_t remap_window(struct map_info *map, unsigned long to) | |
111 | { | |
112 | struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; | |
113 | window_handle_t win = (window_handle_t)map->map_priv_2; | |
114 | memreq_t mrq; | |
115 | int ret; | |
116 | ||
117 | if(!(dev->link.state & DEV_PRESENT)) { | |
118 | DEBUG(1, "device removed state = 0x%4.4X", dev->link.state); | |
119 | return 0; | |
120 | } | |
121 | ||
122 | mrq.CardOffset = to & ~(dev->win_size-1); | |
123 | if(mrq.CardOffset != dev->offset) { | |
124 | DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x", | |
125 | dev->offset, mrq.CardOffset); | |
126 | mrq.Page = 0; | |
127 | if( (ret = pcmcia_map_mem_page(win, &mrq)) != CS_SUCCESS) { | |
128 | cs_error(dev->link.handle, MapMemPage, ret); | |
129 | return NULL; | |
130 | } | |
131 | dev->offset = mrq.CardOffset; | |
132 | } | |
133 | return dev->win_base + (to & (dev->win_size-1)); | |
134 | } | |
135 | ||
136 | ||
137 | static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs) | |
138 | { | |
139 | caddr_t addr; | |
140 | map_word d = {{0}}; | |
141 | ||
142 | addr = remap_window(map, ofs); | |
143 | if(!addr) | |
144 | return d; | |
145 | ||
146 | d.x[0] = readb(addr); | |
147 | DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, addr, d.x[0]); | |
148 | return d; | |
149 | } | |
150 | ||
151 | ||
152 | static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs) | |
153 | { | |
154 | caddr_t addr; | |
155 | map_word d = {{0}}; | |
156 | ||
157 | addr = remap_window(map, ofs); | |
158 | if(!addr) | |
159 | return d; | |
160 | ||
161 | d.x[0] = readw(addr); | |
162 | DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, addr, d.x[0]); | |
163 | return d; | |
164 | } | |
165 | ||
166 | ||
167 | static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len) | |
168 | { | |
169 | struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; | |
170 | unsigned long win_size = dev->win_size; | |
171 | ||
172 | DEBUG(3, "to = %p from = %lu len = %u", to, from, len); | |
173 | while(len) { | |
174 | int toread = win_size - (from & (win_size-1)); | |
175 | caddr_t addr; | |
176 | ||
177 | if(toread > len) | |
178 | toread = len; | |
69f34c98 | 179 | |
1da177e4 LT |
180 | addr = remap_window(map, from); |
181 | if(!addr) | |
182 | return; | |
183 | ||
184 | DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread); | |
185 | memcpy_fromio(to, addr, toread); | |
186 | len -= toread; | |
187 | to += toread; | |
188 | from += toread; | |
189 | } | |
190 | } | |
191 | ||
192 | ||
193 | static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr) | |
194 | { | |
195 | caddr_t addr = remap_window(map, adr); | |
196 | ||
197 | if(!addr) | |
198 | return; | |
199 | ||
200 | DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, addr, d.x[0]); | |
201 | writeb(d.x[0], addr); | |
202 | } | |
203 | ||
204 | ||
205 | static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr) | |
206 | { | |
207 | caddr_t addr = remap_window(map, adr); | |
208 | if(!addr) | |
209 | return; | |
210 | ||
211 | DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, addr, d.x[0]); | |
212 | writew(d.x[0], addr); | |
213 | } | |
214 | ||
215 | ||
216 | static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len) | |
217 | { | |
218 | struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; | |
219 | unsigned long win_size = dev->win_size; | |
220 | ||
221 | DEBUG(3, "to = %lu from = %p len = %u", to, from, len); | |
222 | while(len) { | |
223 | int towrite = win_size - (to & (win_size-1)); | |
224 | caddr_t addr; | |
225 | ||
226 | if(towrite > len) | |
227 | towrite = len; | |
228 | ||
229 | addr = remap_window(map, to); | |
230 | if(!addr) | |
231 | return; | |
232 | ||
233 | DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite); | |
234 | memcpy_toio(addr, from, towrite); | |
235 | len -= towrite; | |
236 | to += towrite; | |
237 | from += towrite; | |
238 | } | |
239 | } | |
240 | ||
241 | ||
242 | /* read/write{8,16} copy_{from,to} routines with direct access */ | |
243 | ||
244 | #define DEV_REMOVED(x) (!(*(u_int *)x->map_priv_1 & DEV_PRESENT)) | |
245 | ||
246 | static map_word pcmcia_read8(struct map_info *map, unsigned long ofs) | |
247 | { | |
248 | caddr_t win_base = (caddr_t)map->map_priv_2; | |
249 | map_word d = {{0}}; | |
250 | ||
251 | if(DEV_REMOVED(map)) | |
252 | return d; | |
253 | ||
254 | d.x[0] = readb(win_base + ofs); | |
255 | DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, win_base + ofs, d.x[0]); | |
256 | return d; | |
257 | } | |
258 | ||
259 | ||
260 | static map_word pcmcia_read16(struct map_info *map, unsigned long ofs) | |
261 | { | |
262 | caddr_t win_base = (caddr_t)map->map_priv_2; | |
263 | map_word d = {{0}}; | |
264 | ||
265 | if(DEV_REMOVED(map)) | |
266 | return d; | |
267 | ||
268 | d.x[0] = readw(win_base + ofs); | |
269 | DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, win_base + ofs, d.x[0]); | |
270 | return d; | |
271 | } | |
272 | ||
273 | ||
274 | static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) | |
275 | { | |
276 | caddr_t win_base = (caddr_t)map->map_priv_2; | |
277 | ||
278 | if(DEV_REMOVED(map)) | |
279 | return; | |
280 | ||
281 | DEBUG(3, "to = %p from = %lu len = %u", to, from, len); | |
282 | memcpy_fromio(to, win_base + from, len); | |
283 | } | |
284 | ||
285 | ||
286 | static void pcmcia_write8(struct map_info *map, u8 d, unsigned long adr) | |
287 | { | |
288 | caddr_t win_base = (caddr_t)map->map_priv_2; | |
289 | ||
290 | if(DEV_REMOVED(map)) | |
291 | return; | |
292 | ||
293 | DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, win_base + adr, d); | |
294 | writeb(d, win_base + adr); | |
295 | } | |
296 | ||
297 | ||
298 | static void pcmcia_write16(struct map_info *map, u16 d, unsigned long adr) | |
299 | { | |
300 | caddr_t win_base = (caddr_t)map->map_priv_2; | |
301 | ||
302 | if(DEV_REMOVED(map)) | |
303 | return; | |
304 | ||
305 | DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, win_base + adr, d); | |
306 | writew(d, win_base + adr); | |
307 | } | |
308 | ||
309 | ||
310 | static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) | |
311 | { | |
312 | caddr_t win_base = (caddr_t)map->map_priv_2; | |
313 | ||
314 | if(DEV_REMOVED(map)) | |
315 | return; | |
316 | ||
317 | DEBUG(3, "to = %lu from = %p len = %u", to, from, len); | |
318 | memcpy_toio(win_base + to, from, len); | |
319 | } | |
320 | ||
321 | ||
322 | static void pcmciamtd_set_vpp(struct map_info *map, int on) | |
323 | { | |
324 | struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; | |
325 | dev_link_t *link = &dev->link; | |
326 | modconf_t mod; | |
327 | int ret; | |
328 | ||
329 | mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID; | |
330 | mod.Vcc = 0; | |
331 | mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0; | |
332 | ||
333 | DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp); | |
334 | ret = pcmcia_modify_configuration(link->handle, &mod); | |
335 | if(ret != CS_SUCCESS) { | |
336 | cs_error(link->handle, ModifyConfiguration, ret); | |
337 | } | |
338 | } | |
339 | ||
340 | ||
341 | /* After a card is removed, pcmciamtd_release() will unregister the | |
342 | * device, and release the PCMCIA configuration. If the device is | |
343 | * still open, this will be postponed until it is closed. | |
344 | */ | |
345 | ||
346 | static void pcmciamtd_release(dev_link_t *link) | |
347 | { | |
348 | struct pcmciamtd_dev *dev = link->priv; | |
349 | ||
350 | DEBUG(3, "link = 0x%p", link); | |
351 | ||
352 | if (link->win) { | |
353 | if(dev->win_base) { | |
354 | iounmap(dev->win_base); | |
355 | dev->win_base = NULL; | |
356 | } | |
357 | pcmcia_release_window(link->win); | |
358 | } | |
359 | pcmcia_release_configuration(link->handle); | |
360 | link->state &= ~DEV_CONFIG; | |
361 | } | |
362 | ||
363 | ||
364 | static void card_settings(struct pcmciamtd_dev *dev, dev_link_t *link, int *new_name) | |
365 | { | |
366 | int rc; | |
367 | tuple_t tuple; | |
368 | cisparse_t parse; | |
369 | u_char buf[64]; | |
370 | ||
371 | tuple.Attributes = 0; | |
372 | tuple.TupleData = (cisdata_t *)buf; | |
373 | tuple.TupleDataMax = sizeof(buf); | |
374 | tuple.TupleOffset = 0; | |
375 | tuple.DesiredTuple = RETURN_FIRST_TUPLE; | |
376 | ||
377 | rc = pcmcia_get_first_tuple(link->handle, &tuple); | |
378 | while(rc == CS_SUCCESS) { | |
379 | rc = pcmcia_get_tuple_data(link->handle, &tuple); | |
380 | if(rc != CS_SUCCESS) { | |
381 | cs_error(link->handle, GetTupleData, rc); | |
382 | break; | |
383 | } | |
384 | rc = pcmcia_parse_tuple(link->handle, &tuple, &parse); | |
385 | if(rc != CS_SUCCESS) { | |
386 | cs_error(link->handle, ParseTuple, rc); | |
387 | break; | |
388 | } | |
69f34c98 | 389 | |
1da177e4 LT |
390 | switch(tuple.TupleCode) { |
391 | case CISTPL_FORMAT: { | |
392 | cistpl_format_t *t = &parse.format; | |
393 | (void)t; /* Shut up, gcc */ | |
394 | DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u", | |
395 | t->type, t->edc, t->offset, t->length); | |
396 | break; | |
69f34c98 | 397 | |
1da177e4 | 398 | } |
69f34c98 | 399 | |
1da177e4 LT |
400 | case CISTPL_DEVICE: { |
401 | cistpl_device_t *t = &parse.device; | |
402 | int i; | |
403 | DEBUG(2, "Common memory:"); | |
404 | dev->pcmcia_map.size = t->dev[0].size; | |
405 | for(i = 0; i < t->ndev; i++) { | |
406 | DEBUG(2, "Region %d, type = %u", i, t->dev[i].type); | |
407 | DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp); | |
408 | DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed); | |
409 | DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size); | |
410 | } | |
411 | break; | |
412 | } | |
69f34c98 | 413 | |
1da177e4 LT |
414 | case CISTPL_VERS_1: { |
415 | cistpl_vers_1_t *t = &parse.version_1; | |
416 | int i; | |
417 | if(t->ns) { | |
418 | dev->mtd_name[0] = '\0'; | |
419 | for(i = 0; i < t->ns; i++) { | |
420 | if(i) | |
421 | strcat(dev->mtd_name, " "); | |
422 | strcat(dev->mtd_name, t->str+t->ofs[i]); | |
423 | } | |
424 | } | |
425 | DEBUG(2, "Found name: %s", dev->mtd_name); | |
426 | break; | |
427 | } | |
69f34c98 | 428 | |
1da177e4 LT |
429 | case CISTPL_JEDEC_C: { |
430 | cistpl_jedec_t *t = &parse.jedec; | |
431 | int i; | |
432 | for(i = 0; i < t->nid; i++) { | |
433 | DEBUG(2, "JEDEC: 0x%02x 0x%02x", t->id[i].mfr, t->id[i].info); | |
434 | } | |
435 | break; | |
436 | } | |
69f34c98 | 437 | |
1da177e4 LT |
438 | case CISTPL_DEVICE_GEO: { |
439 | cistpl_device_geo_t *t = &parse.device_geo; | |
440 | int i; | |
441 | dev->pcmcia_map.bankwidth = t->geo[0].buswidth; | |
442 | for(i = 0; i < t->ngeo; i++) { | |
443 | DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth); | |
444 | DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block); | |
445 | DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block); | |
446 | DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block); | |
447 | DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition); | |
448 | DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave); | |
449 | } | |
450 | break; | |
451 | } | |
69f34c98 | 452 | |
1da177e4 LT |
453 | default: |
454 | DEBUG(2, "Unknown tuple code %d", tuple.TupleCode); | |
455 | } | |
69f34c98 | 456 | |
1da177e4 LT |
457 | rc = pcmcia_get_next_tuple(link->handle, &tuple); |
458 | } | |
459 | if(!dev->pcmcia_map.size) | |
460 | dev->pcmcia_map.size = MAX_PCMCIA_ADDR; | |
461 | ||
462 | if(!dev->pcmcia_map.bankwidth) | |
463 | dev->pcmcia_map.bankwidth = 2; | |
464 | ||
465 | if(force_size) { | |
466 | dev->pcmcia_map.size = force_size << 20; | |
467 | DEBUG(2, "size forced to %dM", force_size); | |
468 | } | |
469 | ||
470 | if(bankwidth) { | |
471 | dev->pcmcia_map.bankwidth = bankwidth; | |
472 | DEBUG(2, "bankwidth forced to %d", bankwidth); | |
69f34c98 | 473 | } |
1da177e4 LT |
474 | |
475 | dev->pcmcia_map.name = dev->mtd_name; | |
476 | if(!dev->mtd_name[0]) { | |
477 | strcpy(dev->mtd_name, "PCMCIA Memory card"); | |
478 | *new_name = 1; | |
479 | } | |
480 | ||
481 | DEBUG(1, "Device: Size: %lu Width:%d Name: %s", | |
482 | dev->pcmcia_map.size, dev->pcmcia_map.bankwidth << 3, dev->mtd_name); | |
483 | } | |
484 | ||
485 | ||
486 | /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event | |
487 | * is received, to configure the PCMCIA socket, and to make the | |
488 | * MTD device available to the system. | |
489 | */ | |
490 | ||
491 | #define CS_CHECK(fn, ret) \ | |
492 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
493 | ||
494 | static void pcmciamtd_config(dev_link_t *link) | |
495 | { | |
496 | struct pcmciamtd_dev *dev = link->priv; | |
497 | struct mtd_info *mtd = NULL; | |
498 | cs_status_t status; | |
499 | win_req_t req; | |
500 | int last_ret = 0, last_fn = 0; | |
501 | int ret; | |
502 | int i; | |
503 | config_info_t t; | |
504 | static char *probes[] = { "jedec_probe", "cfi_probe" }; | |
505 | cisinfo_t cisinfo; | |
506 | int new_name = 0; | |
507 | ||
508 | DEBUG(3, "link=0x%p", link); | |
509 | ||
510 | /* Configure card */ | |
511 | link->state |= DEV_CONFIG; | |
512 | ||
513 | DEBUG(2, "Validating CIS"); | |
514 | ret = pcmcia_validate_cis(link->handle, &cisinfo); | |
515 | if(ret != CS_SUCCESS) { | |
516 | cs_error(link->handle, GetTupleData, ret); | |
517 | } else { | |
518 | DEBUG(2, "ValidateCIS found %d chains", cisinfo.Chains); | |
519 | } | |
520 | ||
521 | card_settings(dev, link, &new_name); | |
522 | ||
523 | dev->pcmcia_map.phys = NO_XIP; | |
524 | dev->pcmcia_map.copy_from = pcmcia_copy_from_remap; | |
525 | dev->pcmcia_map.copy_to = pcmcia_copy_to_remap; | |
526 | if (dev->pcmcia_map.bankwidth == 1) { | |
527 | dev->pcmcia_map.read = pcmcia_read8_remap; | |
528 | dev->pcmcia_map.write = pcmcia_write8_remap; | |
529 | } else { | |
530 | dev->pcmcia_map.read = pcmcia_read16_remap; | |
531 | dev->pcmcia_map.write = pcmcia_write16_remap; | |
532 | } | |
533 | if(setvpp == 1) | |
534 | dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp; | |
535 | ||
536 | /* Request a memory window for PCMCIA. Some architeures can map windows upto the maximum | |
537 | that PCMCIA can support (64MiB) - this is ideal and we aim for a window the size of the | |
538 | whole card - otherwise we try smaller windows until we succeed */ | |
539 | ||
540 | req.Attributes = WIN_MEMORY_TYPE_CM | WIN_ENABLE; | |
541 | req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16; | |
542 | req.Base = 0; | |
543 | req.AccessSpeed = mem_speed; | |
544 | link->win = (window_handle_t)link->handle; | |
545 | req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR; | |
546 | dev->win_size = 0; | |
547 | ||
548 | do { | |
549 | int ret; | |
550 | DEBUG(2, "requesting window with size = %dKiB memspeed = %d", | |
551 | req.Size >> 10, req.AccessSpeed); | |
552 | ret = pcmcia_request_window(&link->handle, &req, &link->win); | |
553 | DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size); | |
554 | if(ret) { | |
555 | req.Size >>= 1; | |
556 | } else { | |
557 | DEBUG(2, "Got window of size %dKiB", req.Size >> 10); | |
558 | dev->win_size = req.Size; | |
559 | break; | |
560 | } | |
561 | } while(req.Size >= 0x1000); | |
562 | ||
563 | DEBUG(2, "dev->win_size = %d", dev->win_size); | |
564 | ||
565 | if(!dev->win_size) { | |
566 | err("Cant allocate memory window"); | |
567 | pcmciamtd_release(link); | |
568 | return; | |
569 | } | |
570 | DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10); | |
69f34c98 | 571 | |
1da177e4 LT |
572 | /* Get write protect status */ |
573 | CS_CHECK(GetStatus, pcmcia_get_status(link->handle, &status)); | |
574 | DEBUG(2, "status value: 0x%x window handle = 0x%8.8lx", | |
575 | status.CardState, (unsigned long)link->win); | |
576 | dev->win_base = ioremap(req.Base, req.Size); | |
577 | if(!dev->win_base) { | |
578 | err("ioremap(%lu, %u) failed", req.Base, req.Size); | |
579 | pcmciamtd_release(link); | |
580 | return; | |
581 | } | |
582 | DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x", | |
583 | dev, req.Base, dev->win_base, req.Size); | |
584 | ||
585 | dev->offset = 0; | |
586 | dev->pcmcia_map.map_priv_1 = (unsigned long)dev; | |
587 | dev->pcmcia_map.map_priv_2 = (unsigned long)link->win; | |
588 | ||
589 | DEBUG(2, "Getting configuration"); | |
590 | CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(link->handle, &t)); | |
591 | DEBUG(2, "Vcc = %d Vpp1 = %d Vpp2 = %d", t.Vcc, t.Vpp1, t.Vpp2); | |
592 | dev->vpp = (vpp) ? vpp : t.Vpp1; | |
593 | link->conf.Attributes = 0; | |
594 | link->conf.Vcc = t.Vcc; | |
595 | if(setvpp == 2) { | |
596 | link->conf.Vpp1 = dev->vpp; | |
597 | link->conf.Vpp2 = dev->vpp; | |
598 | } else { | |
599 | link->conf.Vpp1 = 0; | |
600 | link->conf.Vpp2 = 0; | |
601 | } | |
602 | ||
603 | link->conf.IntType = INT_MEMORY; | |
604 | link->conf.ConfigBase = t.ConfigBase; | |
605 | link->conf.Status = t.Status; | |
606 | link->conf.Pin = t.Pin; | |
607 | link->conf.Copy = t.Copy; | |
608 | link->conf.ExtStatus = t.ExtStatus; | |
609 | link->conf.ConfigIndex = 0; | |
610 | link->conf.Present = t.Present; | |
611 | DEBUG(2, "Setting Configuration"); | |
612 | ret = pcmcia_request_configuration(link->handle, &link->conf); | |
613 | if(ret != CS_SUCCESS) { | |
614 | cs_error(link->handle, RequestConfiguration, ret); | |
615 | } | |
616 | ||
617 | if(mem_type == 1) { | |
618 | mtd = do_map_probe("map_ram", &dev->pcmcia_map); | |
619 | } else if(mem_type == 2) { | |
620 | mtd = do_map_probe("map_rom", &dev->pcmcia_map); | |
621 | } else { | |
622 | for(i = 0; i < sizeof(probes) / sizeof(char *); i++) { | |
623 | DEBUG(1, "Trying %s", probes[i]); | |
624 | mtd = do_map_probe(probes[i], &dev->pcmcia_map); | |
625 | if(mtd) | |
626 | break; | |
69f34c98 | 627 | |
1da177e4 LT |
628 | DEBUG(1, "FAILED: %s", probes[i]); |
629 | } | |
630 | } | |
69f34c98 | 631 | |
1da177e4 LT |
632 | if(!mtd) { |
633 | DEBUG(1, "Cant find an MTD"); | |
634 | pcmciamtd_release(link); | |
635 | return; | |
636 | } | |
637 | ||
638 | dev->mtd_info = mtd; | |
639 | mtd->owner = THIS_MODULE; | |
640 | ||
641 | if(new_name) { | |
642 | int size = 0; | |
643 | char unit = ' '; | |
644 | /* Since we are using a default name, make it better by adding in the | |
645 | size */ | |
646 | if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */ | |
647 | size = mtd->size >> 10; | |
648 | unit = 'K'; | |
649 | } else { | |
650 | size = mtd->size >> 20; | |
651 | unit = 'M'; | |
652 | } | |
653 | snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card"); | |
654 | } | |
655 | ||
656 | /* If the memory found is fits completely into the mapped PCMCIA window, | |
657 | use the faster non-remapping read/write functions */ | |
658 | if(mtd->size <= dev->win_size) { | |
659 | DEBUG(1, "Using non remapping memory functions"); | |
660 | dev->pcmcia_map.map_priv_1 = (unsigned long)&(dev->link.state); | |
661 | dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base; | |
662 | if (dev->pcmcia_map.bankwidth == 1) { | |
663 | dev->pcmcia_map.read = pcmcia_read8; | |
664 | dev->pcmcia_map.write = pcmcia_write8; | |
665 | } else { | |
666 | dev->pcmcia_map.read = pcmcia_read16; | |
667 | dev->pcmcia_map.write = pcmcia_write16; | |
668 | } | |
669 | dev->pcmcia_map.copy_from = pcmcia_copy_from; | |
670 | dev->pcmcia_map.copy_to = pcmcia_copy_to; | |
671 | } | |
672 | ||
673 | if(add_mtd_device(mtd)) { | |
674 | map_destroy(mtd); | |
675 | dev->mtd_info = NULL; | |
676 | err("Couldnt register MTD device"); | |
677 | pcmciamtd_release(link); | |
678 | return; | |
679 | } | |
680 | snprintf(dev->node.dev_name, sizeof(dev->node.dev_name), "mtd%d", mtd->index); | |
681 | info("mtd%d: %s", mtd->index, mtd->name); | |
682 | link->state &= ~DEV_CONFIG_PENDING; | |
683 | link->dev = &dev->node; | |
684 | return; | |
685 | ||
686 | cs_failed: | |
687 | cs_error(link->handle, last_fn, last_ret); | |
688 | err("CS Error, exiting"); | |
689 | pcmciamtd_release(link); | |
690 | return; | |
691 | } | |
692 | ||
693 | ||
98e4c28b DB |
694 | static int pcmciamtd_suspend(struct pcmcia_device *dev) |
695 | { | |
696 | DEBUG(2, "EVENT_PM_RESUME"); | |
697 | ||
698 | /* get_lock(link); */ | |
699 | ||
700 | return 0; | |
701 | } | |
702 | ||
703 | static int pcmciamtd_resume(struct pcmcia_device *dev) | |
704 | { | |
705 | DEBUG(2, "EVENT_PM_SUSPEND"); | |
706 | ||
707 | /* free_lock(link); */ | |
708 | ||
709 | return 0; | |
710 | } | |
711 | ||
1da177e4 LT |
712 | /* The card status event handler. Mostly, this schedules other |
713 | * stuff to run after an event is received. A CARD_REMOVAL event | |
714 | * also sets some flags to discourage the driver from trying | |
715 | * to talk to the card any more. | |
716 | */ | |
717 | ||
718 | static int pcmciamtd_event(event_t event, int priority, | |
719 | event_callback_args_t *args) | |
720 | { | |
721 | dev_link_t *link = args->client_data; | |
722 | ||
723 | DEBUG(1, "event=0x%06x", event); | |
724 | switch (event) { | |
725 | case CS_EVENT_CARD_REMOVAL: | |
726 | DEBUG(2, "EVENT_CARD_REMOVAL"); | |
727 | link->state &= ~DEV_PRESENT; | |
728 | if (link->state & DEV_CONFIG) { | |
729 | struct pcmciamtd_dev *dev = link->priv; | |
730 | if(dev->mtd_info) { | |
731 | del_mtd_device(dev->mtd_info); | |
732 | info("mtd%d: Removed", dev->mtd_info->index); | |
733 | } | |
734 | pcmciamtd_release(link); | |
735 | } | |
736 | break; | |
737 | case CS_EVENT_CARD_INSERTION: | |
738 | DEBUG(2, "EVENT_CARD_INSERTION"); | |
739 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
740 | pcmciamtd_config(link); | |
741 | break; | |
1da177e4 LT |
742 | default: |
743 | DEBUG(2, "Unknown event %d", event); | |
744 | } | |
745 | return 0; | |
746 | } | |
747 | ||
748 | ||
749 | /* This deletes a driver "instance". The device is de-registered | |
750 | * with Card Services. If it has been released, all local data | |
751 | * structures are freed. Otherwise, the structures will be freed | |
752 | * when the device is released. | |
753 | */ | |
754 | ||
755 | static void pcmciamtd_detach(dev_link_t *link) | |
756 | { | |
757 | DEBUG(3, "link=0x%p", link); | |
758 | ||
759 | if(link->state & DEV_CONFIG) { | |
760 | pcmciamtd_release(link); | |
761 | } | |
762 | ||
763 | if (link->handle) { | |
764 | int ret; | |
765 | DEBUG(2, "Deregistering with card services"); | |
766 | ret = pcmcia_deregister_client(link->handle); | |
767 | if (ret != CS_SUCCESS) | |
768 | cs_error(link->handle, DeregisterClient, ret); | |
769 | } | |
770 | ||
771 | link->state |= DEV_STALE_LINK; | |
772 | } | |
773 | ||
774 | ||
775 | /* pcmciamtd_attach() creates an "instance" of the driver, allocating | |
776 | * local data structures for one device. The device is registered | |
777 | * with Card Services. | |
778 | */ | |
779 | ||
780 | static dev_link_t *pcmciamtd_attach(void) | |
781 | { | |
782 | struct pcmciamtd_dev *dev; | |
783 | dev_link_t *link; | |
784 | client_reg_t client_reg; | |
785 | int ret; | |
786 | ||
787 | /* Create new memory card device */ | |
788 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
789 | if (!dev) return NULL; | |
790 | DEBUG(1, "dev=0x%p", dev); | |
791 | ||
792 | memset(dev, 0, sizeof(*dev)); | |
793 | link = &dev->link; | |
794 | link->priv = dev; | |
795 | ||
796 | link->conf.Attributes = 0; | |
797 | link->conf.IntType = INT_MEMORY; | |
798 | ||
799 | link->next = dev_list; | |
800 | dev_list = link; | |
801 | ||
802 | /* Register with Card Services */ | |
803 | client_reg.dev_info = &dev_info; | |
1da177e4 LT |
804 | client_reg.Version = 0x0210; |
805 | client_reg.event_callback_args.client_data = link; | |
806 | DEBUG(2, "Calling RegisterClient"); | |
807 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
808 | if (ret != 0) { | |
809 | cs_error(link->handle, RegisterClient, ret); | |
810 | pcmciamtd_detach(link); | |
811 | return NULL; | |
812 | } | |
813 | DEBUG(2, "link = %p", link); | |
814 | return link; | |
815 | } | |
816 | ||
11d28a30 DB |
817 | static struct pcmcia_device_id pcmciamtd_ids[] = { |
818 | PCMCIA_DEVICE_FUNC_ID(1), | |
819 | PCMCIA_DEVICE_PROD_ID123("IO DATA", "PCS-2M", "2MB SRAM", 0x547e66dc, 0x1fed36cd, 0x36eadd21), | |
820 | PCMCIA_DEVICE_PROD_ID12("IBM", "2MB SRAM", 0xb569a6e5, 0x36eadd21), | |
821 | PCMCIA_DEVICE_PROD_ID12("IBM", "4MB FLASH", 0xb569a6e5, 0x8bc54d2a), | |
822 | PCMCIA_DEVICE_PROD_ID12("IBM", "8MB FLASH", 0xb569a6e5, 0x6df1be3e), | |
823 | PCMCIA_DEVICE_PROD_ID12("Intel", "S2E20SW", 0x816cc815, 0xd14c9dcf), | |
824 | PCMCIA_DEVICE_PROD_ID12("Intel", "S2E8 SW", 0x816cc815, 0xa2d7dedb), | |
825 | PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-02 ", 0x40ade711, 0x145cea5c), | |
826 | PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-04 ", 0x40ade711, 0x42064dda), | |
827 | PCMCIA_DEVICE_PROD_ID12("intel", "SERIES2-20 ", 0x40ade711, 0x25ee5cb0), | |
828 | PCMCIA_DEVICE_PROD_ID12("intel", "VALUE SERIES 100 ", 0x40ade711, 0xdf8506d8), | |
829 | PCMCIA_DEVICE_PROD_ID12("KINGMAX TECHNOLOGY INC.", "SRAM 256K Bytes", 0x54d0c69c, 0xad12c29c), | |
830 | PCMCIA_DEVICE_PROD_ID12("Maxtor", "MAXFL MobileMax Flash Memory Card", 0xb68968c8, 0x2dfb47b0), | |
831 | PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB101EN20", 0xf9876baf, 0xad0b207b), | |
832 | PCMCIA_DEVICE_PROD_ID12("SEIKO EPSON", "WWB513EN20", 0xf9876baf, 0xe8d884ad), | |
833 | PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-3000", 0x05ddca47, 0xe7d67bca), | |
834 | PCMCIA_DEVICE_PROD_ID12("Starfish, Inc.", "REX-4100", 0x05ddca47, 0x7bc32944), | |
835 | /* the following was commented out in pcmcia-cs-3.2.7 */ | |
836 | /* PCMCIA_DEVICE_PROD_ID12("RATOC Systems,Inc.", "SmartMedia ADAPTER PC Card", 0xf4a2fefe, 0x5885b2ae), */ | |
837 | #ifdef CONFIG_MTD_PCMCIA_ANONYMOUS | |
838 | { .match_flags = PCMCIA_DEV_ID_MATCH_ANONYMOUS, }, | |
839 | #endif | |
840 | PCMCIA_DEVICE_NULL | |
841 | }; | |
842 | MODULE_DEVICE_TABLE(pcmcia, pcmciamtd_ids); | |
1da177e4 LT |
843 | |
844 | static struct pcmcia_driver pcmciamtd_driver = { | |
845 | .drv = { | |
846 | .name = "pcmciamtd" | |
847 | }, | |
848 | .attach = pcmciamtd_attach, | |
1e212f36 | 849 | .event = pcmciamtd_event, |
1da177e4 | 850 | .detach = pcmciamtd_detach, |
11d28a30 DB |
851 | .owner = THIS_MODULE, |
852 | .id_table = pcmciamtd_ids, | |
98e4c28b DB |
853 | .suspend = pcmciamtd_suspend, |
854 | .resume = pcmciamtd_resume, | |
1da177e4 LT |
855 | }; |
856 | ||
857 | ||
858 | static int __init init_pcmciamtd(void) | |
859 | { | |
860 | info(DRIVER_DESC " " DRIVER_VERSION); | |
861 | ||
862 | if(bankwidth && bankwidth != 1 && bankwidth != 2) { | |
863 | info("bad bankwidth (%d), using default", bankwidth); | |
864 | bankwidth = 2; | |
865 | } | |
866 | if(force_size && (force_size < 1 || force_size > 64)) { | |
867 | info("bad force_size (%d), using default", force_size); | |
868 | force_size = 0; | |
869 | } | |
870 | if(mem_type && mem_type != 1 && mem_type != 2) { | |
871 | info("bad mem_type (%d), using default", mem_type); | |
872 | mem_type = 0; | |
873 | } | |
874 | return pcmcia_register_driver(&pcmciamtd_driver); | |
875 | } | |
876 | ||
877 | ||
878 | static void __exit exit_pcmciamtd(void) | |
879 | { | |
880 | DEBUG(1, DRIVER_DESC " unloading"); | |
881 | pcmcia_unregister_driver(&pcmciamtd_driver); | |
882 | BUG_ON(dev_list != NULL); | |
883 | } | |
884 | ||
885 | module_init(init_pcmciamtd); | |
886 | module_exit(exit_pcmciamtd); |