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1da177e4 LT |
1 | /* |
2 | * $Id: pcmciamtd.c,v 1.51 2004/07/12 22:38:29 dwmw2 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/version.h> | |
22 | #include <pcmcia/cs_types.h> | |
23 | #include <pcmcia/cs.h> | |
24 | #include <pcmcia/cistpl.h> | |
25 | #include <pcmcia/ds.h> | |
26 | ||
27 | #include <linux/mtd/map.h> | |
28 | #include <linux/mtd/mtd.h> | |
29 | ||
30 | #ifdef CONFIG_MTD_DEBUG | |
31 | static int debug = CONFIG_MTD_DEBUG_VERBOSE; | |
32 | MODULE_PARM(debug, "i"); | |
33 | MODULE_PARM_DESC(debug, "Set Debug Level 0=quiet, 5=noisy"); | |
34 | #undef DEBUG | |
35 | #define DEBUG(n, format, arg...) \ | |
36 | if (n <= debug) { \ | |
37 | printk(KERN_DEBUG __FILE__ ":%s(): " format "\n", __FUNCTION__ , ## arg); \ | |
38 | } | |
39 | ||
40 | #else | |
41 | #undef DEBUG | |
42 | #define DEBUG(n, arg...) | |
43 | static const int debug = 0; | |
44 | #endif | |
45 | ||
46 | #define err(format, arg...) printk(KERN_ERR "pcmciamtd: " format "\n" , ## arg) | |
47 | #define info(format, arg...) printk(KERN_INFO "pcmciamtd: " format "\n" , ## arg) | |
48 | #define warn(format, arg...) printk(KERN_WARNING "pcmciamtd: " format "\n" , ## arg) | |
49 | ||
50 | ||
51 | #define DRIVER_DESC "PCMCIA Flash memory card driver" | |
52 | #define DRIVER_VERSION "$Revision: 1.51 $" | |
53 | ||
54 | /* Size of the PCMCIA address space: 26 bits = 64 MB */ | |
55 | #define MAX_PCMCIA_ADDR 0x4000000 | |
56 | ||
57 | struct pcmciamtd_dev { | |
58 | dev_link_t link; /* PCMCIA link */ | |
59 | dev_node_t node; /* device node */ | |
60 | caddr_t win_base; /* ioremapped address of PCMCIA window */ | |
61 | unsigned int win_size; /* size of window */ | |
62 | unsigned int offset; /* offset into card the window currently points at */ | |
63 | struct map_info pcmcia_map; | |
64 | struct mtd_info *mtd_info; | |
65 | int vpp; | |
66 | char mtd_name[sizeof(struct cistpl_vers_1_t)]; | |
67 | }; | |
68 | ||
69 | ||
70 | static dev_info_t dev_info = "pcmciamtd"; | |
71 | static dev_link_t *dev_list; | |
72 | ||
73 | /* Module parameters */ | |
74 | ||
75 | /* 2 = do 16-bit transfers, 1 = do 8-bit transfers */ | |
76 | static int bankwidth = 2; | |
77 | ||
78 | /* Speed of memory accesses, in ns */ | |
79 | static int mem_speed; | |
80 | ||
81 | /* Force the size of an SRAM card */ | |
82 | static int force_size; | |
83 | ||
84 | /* Force Vpp */ | |
85 | static int vpp; | |
86 | ||
87 | /* Set Vpp */ | |
88 | static int setvpp; | |
89 | ||
90 | /* Force card to be treated as FLASH, ROM or RAM */ | |
91 | static int mem_type; | |
92 | ||
93 | MODULE_LICENSE("GPL"); | |
94 | MODULE_AUTHOR("Simon Evans <spse@secret.org.uk>"); | |
95 | MODULE_DESCRIPTION(DRIVER_DESC); | |
96 | MODULE_PARM(bankwidth, "i"); | |
97 | MODULE_PARM_DESC(bankwidth, "Set bankwidth (1=8 bit, 2=16 bit, default=2)"); | |
98 | MODULE_PARM(mem_speed, "i"); | |
99 | MODULE_PARM_DESC(mem_speed, "Set memory access speed in ns"); | |
100 | MODULE_PARM(force_size, "i"); | |
101 | MODULE_PARM_DESC(force_size, "Force size of card in MiB (1-64)"); | |
102 | MODULE_PARM(setvpp, "i"); | |
103 | MODULE_PARM_DESC(setvpp, "Set Vpp (0=Never, 1=On writes, 2=Always on, default=0)"); | |
104 | MODULE_PARM(vpp, "i"); | |
105 | MODULE_PARM_DESC(vpp, "Vpp value in 1/10ths eg 33=3.3V 120=12V (Dangerous)"); | |
106 | MODULE_PARM(mem_type, "i"); | |
107 | MODULE_PARM_DESC(mem_type, "Set Memory type (0=Flash, 1=RAM, 2=ROM, default=0)"); | |
108 | ||
109 | ||
110 | /* read/write{8,16} copy_{from,to} routines with window remapping to access whole card */ | |
111 | static caddr_t remap_window(struct map_info *map, unsigned long to) | |
112 | { | |
113 | struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; | |
114 | window_handle_t win = (window_handle_t)map->map_priv_2; | |
115 | memreq_t mrq; | |
116 | int ret; | |
117 | ||
118 | if(!(dev->link.state & DEV_PRESENT)) { | |
119 | DEBUG(1, "device removed state = 0x%4.4X", dev->link.state); | |
120 | return 0; | |
121 | } | |
122 | ||
123 | mrq.CardOffset = to & ~(dev->win_size-1); | |
124 | if(mrq.CardOffset != dev->offset) { | |
125 | DEBUG(2, "Remapping window from 0x%8.8x to 0x%8.8x", | |
126 | dev->offset, mrq.CardOffset); | |
127 | mrq.Page = 0; | |
128 | if( (ret = pcmcia_map_mem_page(win, &mrq)) != CS_SUCCESS) { | |
129 | cs_error(dev->link.handle, MapMemPage, ret); | |
130 | return NULL; | |
131 | } | |
132 | dev->offset = mrq.CardOffset; | |
133 | } | |
134 | return dev->win_base + (to & (dev->win_size-1)); | |
135 | } | |
136 | ||
137 | ||
138 | static map_word pcmcia_read8_remap(struct map_info *map, unsigned long ofs) | |
139 | { | |
140 | caddr_t addr; | |
141 | map_word d = {{0}}; | |
142 | ||
143 | addr = remap_window(map, ofs); | |
144 | if(!addr) | |
145 | return d; | |
146 | ||
147 | d.x[0] = readb(addr); | |
148 | DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, addr, d.x[0]); | |
149 | return d; | |
150 | } | |
151 | ||
152 | ||
153 | static map_word pcmcia_read16_remap(struct map_info *map, unsigned long ofs) | |
154 | { | |
155 | caddr_t addr; | |
156 | map_word d = {{0}}; | |
157 | ||
158 | addr = remap_window(map, ofs); | |
159 | if(!addr) | |
160 | return d; | |
161 | ||
162 | d.x[0] = readw(addr); | |
163 | DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, addr, d.x[0]); | |
164 | return d; | |
165 | } | |
166 | ||
167 | ||
168 | static void pcmcia_copy_from_remap(struct map_info *map, void *to, unsigned long from, ssize_t len) | |
169 | { | |
170 | struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; | |
171 | unsigned long win_size = dev->win_size; | |
172 | ||
173 | DEBUG(3, "to = %p from = %lu len = %u", to, from, len); | |
174 | while(len) { | |
175 | int toread = win_size - (from & (win_size-1)); | |
176 | caddr_t addr; | |
177 | ||
178 | if(toread > len) | |
179 | toread = len; | |
180 | ||
181 | addr = remap_window(map, from); | |
182 | if(!addr) | |
183 | return; | |
184 | ||
185 | DEBUG(4, "memcpy from %p to %p len = %d", addr, to, toread); | |
186 | memcpy_fromio(to, addr, toread); | |
187 | len -= toread; | |
188 | to += toread; | |
189 | from += toread; | |
190 | } | |
191 | } | |
192 | ||
193 | ||
194 | static void pcmcia_write8_remap(struct map_info *map, map_word d, unsigned long adr) | |
195 | { | |
196 | caddr_t addr = remap_window(map, adr); | |
197 | ||
198 | if(!addr) | |
199 | return; | |
200 | ||
201 | DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, addr, d.x[0]); | |
202 | writeb(d.x[0], addr); | |
203 | } | |
204 | ||
205 | ||
206 | static void pcmcia_write16_remap(struct map_info *map, map_word d, unsigned long adr) | |
207 | { | |
208 | caddr_t addr = remap_window(map, adr); | |
209 | if(!addr) | |
210 | return; | |
211 | ||
212 | DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, addr, d.x[0]); | |
213 | writew(d.x[0], addr); | |
214 | } | |
215 | ||
216 | ||
217 | static void pcmcia_copy_to_remap(struct map_info *map, unsigned long to, const void *from, ssize_t len) | |
218 | { | |
219 | struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; | |
220 | unsigned long win_size = dev->win_size; | |
221 | ||
222 | DEBUG(3, "to = %lu from = %p len = %u", to, from, len); | |
223 | while(len) { | |
224 | int towrite = win_size - (to & (win_size-1)); | |
225 | caddr_t addr; | |
226 | ||
227 | if(towrite > len) | |
228 | towrite = len; | |
229 | ||
230 | addr = remap_window(map, to); | |
231 | if(!addr) | |
232 | return; | |
233 | ||
234 | DEBUG(4, "memcpy from %p to %p len = %d", from, addr, towrite); | |
235 | memcpy_toio(addr, from, towrite); | |
236 | len -= towrite; | |
237 | to += towrite; | |
238 | from += towrite; | |
239 | } | |
240 | } | |
241 | ||
242 | ||
243 | /* read/write{8,16} copy_{from,to} routines with direct access */ | |
244 | ||
245 | #define DEV_REMOVED(x) (!(*(u_int *)x->map_priv_1 & DEV_PRESENT)) | |
246 | ||
247 | static map_word pcmcia_read8(struct map_info *map, unsigned long ofs) | |
248 | { | |
249 | caddr_t win_base = (caddr_t)map->map_priv_2; | |
250 | map_word d = {{0}}; | |
251 | ||
252 | if(DEV_REMOVED(map)) | |
253 | return d; | |
254 | ||
255 | d.x[0] = readb(win_base + ofs); | |
256 | DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%02x", ofs, win_base + ofs, d.x[0]); | |
257 | return d; | |
258 | } | |
259 | ||
260 | ||
261 | static map_word pcmcia_read16(struct map_info *map, unsigned long ofs) | |
262 | { | |
263 | caddr_t win_base = (caddr_t)map->map_priv_2; | |
264 | map_word d = {{0}}; | |
265 | ||
266 | if(DEV_REMOVED(map)) | |
267 | return d; | |
268 | ||
269 | d.x[0] = readw(win_base + ofs); | |
270 | DEBUG(3, "ofs = 0x%08lx (%p) data = 0x%04x", ofs, win_base + ofs, d.x[0]); | |
271 | return d; | |
272 | } | |
273 | ||
274 | ||
275 | static void pcmcia_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) | |
276 | { | |
277 | caddr_t win_base = (caddr_t)map->map_priv_2; | |
278 | ||
279 | if(DEV_REMOVED(map)) | |
280 | return; | |
281 | ||
282 | DEBUG(3, "to = %p from = %lu len = %u", to, from, len); | |
283 | memcpy_fromio(to, win_base + from, len); | |
284 | } | |
285 | ||
286 | ||
287 | static void pcmcia_write8(struct map_info *map, u8 d, unsigned long adr) | |
288 | { | |
289 | caddr_t win_base = (caddr_t)map->map_priv_2; | |
290 | ||
291 | if(DEV_REMOVED(map)) | |
292 | return; | |
293 | ||
294 | DEBUG(3, "adr = 0x%08lx (%p) data = 0x%02x", adr, win_base + adr, d); | |
295 | writeb(d, win_base + adr); | |
296 | } | |
297 | ||
298 | ||
299 | static void pcmcia_write16(struct map_info *map, u16 d, unsigned long adr) | |
300 | { | |
301 | caddr_t win_base = (caddr_t)map->map_priv_2; | |
302 | ||
303 | if(DEV_REMOVED(map)) | |
304 | return; | |
305 | ||
306 | DEBUG(3, "adr = 0x%08lx (%p) data = 0x%04x", adr, win_base + adr, d); | |
307 | writew(d, win_base + adr); | |
308 | } | |
309 | ||
310 | ||
311 | static void pcmcia_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) | |
312 | { | |
313 | caddr_t win_base = (caddr_t)map->map_priv_2; | |
314 | ||
315 | if(DEV_REMOVED(map)) | |
316 | return; | |
317 | ||
318 | DEBUG(3, "to = %lu from = %p len = %u", to, from, len); | |
319 | memcpy_toio(win_base + to, from, len); | |
320 | } | |
321 | ||
322 | ||
323 | static void pcmciamtd_set_vpp(struct map_info *map, int on) | |
324 | { | |
325 | struct pcmciamtd_dev *dev = (struct pcmciamtd_dev *)map->map_priv_1; | |
326 | dev_link_t *link = &dev->link; | |
327 | modconf_t mod; | |
328 | int ret; | |
329 | ||
330 | mod.Attributes = CONF_VPP1_CHANGE_VALID | CONF_VPP2_CHANGE_VALID; | |
331 | mod.Vcc = 0; | |
332 | mod.Vpp1 = mod.Vpp2 = on ? dev->vpp : 0; | |
333 | ||
334 | DEBUG(2, "dev = %p on = %d vpp = %d\n", dev, on, dev->vpp); | |
335 | ret = pcmcia_modify_configuration(link->handle, &mod); | |
336 | if(ret != CS_SUCCESS) { | |
337 | cs_error(link->handle, ModifyConfiguration, ret); | |
338 | } | |
339 | } | |
340 | ||
341 | ||
342 | /* After a card is removed, pcmciamtd_release() will unregister the | |
343 | * device, and release the PCMCIA configuration. If the device is | |
344 | * still open, this will be postponed until it is closed. | |
345 | */ | |
346 | ||
347 | static void pcmciamtd_release(dev_link_t *link) | |
348 | { | |
349 | struct pcmciamtd_dev *dev = link->priv; | |
350 | ||
351 | DEBUG(3, "link = 0x%p", link); | |
352 | ||
353 | if (link->win) { | |
354 | if(dev->win_base) { | |
355 | iounmap(dev->win_base); | |
356 | dev->win_base = NULL; | |
357 | } | |
358 | pcmcia_release_window(link->win); | |
359 | } | |
360 | pcmcia_release_configuration(link->handle); | |
361 | link->state &= ~DEV_CONFIG; | |
362 | } | |
363 | ||
364 | ||
365 | static void card_settings(struct pcmciamtd_dev *dev, dev_link_t *link, int *new_name) | |
366 | { | |
367 | int rc; | |
368 | tuple_t tuple; | |
369 | cisparse_t parse; | |
370 | u_char buf[64]; | |
371 | ||
372 | tuple.Attributes = 0; | |
373 | tuple.TupleData = (cisdata_t *)buf; | |
374 | tuple.TupleDataMax = sizeof(buf); | |
375 | tuple.TupleOffset = 0; | |
376 | tuple.DesiredTuple = RETURN_FIRST_TUPLE; | |
377 | ||
378 | rc = pcmcia_get_first_tuple(link->handle, &tuple); | |
379 | while(rc == CS_SUCCESS) { | |
380 | rc = pcmcia_get_tuple_data(link->handle, &tuple); | |
381 | if(rc != CS_SUCCESS) { | |
382 | cs_error(link->handle, GetTupleData, rc); | |
383 | break; | |
384 | } | |
385 | rc = pcmcia_parse_tuple(link->handle, &tuple, &parse); | |
386 | if(rc != CS_SUCCESS) { | |
387 | cs_error(link->handle, ParseTuple, rc); | |
388 | break; | |
389 | } | |
390 | ||
391 | switch(tuple.TupleCode) { | |
392 | case CISTPL_FORMAT: { | |
393 | cistpl_format_t *t = &parse.format; | |
394 | (void)t; /* Shut up, gcc */ | |
395 | DEBUG(2, "Format type: %u, Error Detection: %u, offset = %u, length =%u", | |
396 | t->type, t->edc, t->offset, t->length); | |
397 | break; | |
398 | ||
399 | } | |
400 | ||
401 | case CISTPL_DEVICE: { | |
402 | cistpl_device_t *t = &parse.device; | |
403 | int i; | |
404 | DEBUG(2, "Common memory:"); | |
405 | dev->pcmcia_map.size = t->dev[0].size; | |
406 | for(i = 0; i < t->ndev; i++) { | |
407 | DEBUG(2, "Region %d, type = %u", i, t->dev[i].type); | |
408 | DEBUG(2, "Region %d, wp = %u", i, t->dev[i].wp); | |
409 | DEBUG(2, "Region %d, speed = %u ns", i, t->dev[i].speed); | |
410 | DEBUG(2, "Region %d, size = %u bytes", i, t->dev[i].size); | |
411 | } | |
412 | break; | |
413 | } | |
414 | ||
415 | case CISTPL_VERS_1: { | |
416 | cistpl_vers_1_t *t = &parse.version_1; | |
417 | int i; | |
418 | if(t->ns) { | |
419 | dev->mtd_name[0] = '\0'; | |
420 | for(i = 0; i < t->ns; i++) { | |
421 | if(i) | |
422 | strcat(dev->mtd_name, " "); | |
423 | strcat(dev->mtd_name, t->str+t->ofs[i]); | |
424 | } | |
425 | } | |
426 | DEBUG(2, "Found name: %s", dev->mtd_name); | |
427 | break; | |
428 | } | |
429 | ||
430 | case CISTPL_JEDEC_C: { | |
431 | cistpl_jedec_t *t = &parse.jedec; | |
432 | int i; | |
433 | for(i = 0; i < t->nid; i++) { | |
434 | DEBUG(2, "JEDEC: 0x%02x 0x%02x", t->id[i].mfr, t->id[i].info); | |
435 | } | |
436 | break; | |
437 | } | |
438 | ||
439 | case CISTPL_DEVICE_GEO: { | |
440 | cistpl_device_geo_t *t = &parse.device_geo; | |
441 | int i; | |
442 | dev->pcmcia_map.bankwidth = t->geo[0].buswidth; | |
443 | for(i = 0; i < t->ngeo; i++) { | |
444 | DEBUG(2, "region: %d bankwidth = %u", i, t->geo[i].buswidth); | |
445 | DEBUG(2, "region: %d erase_block = %u", i, t->geo[i].erase_block); | |
446 | DEBUG(2, "region: %d read_block = %u", i, t->geo[i].read_block); | |
447 | DEBUG(2, "region: %d write_block = %u", i, t->geo[i].write_block); | |
448 | DEBUG(2, "region: %d partition = %u", i, t->geo[i].partition); | |
449 | DEBUG(2, "region: %d interleave = %u", i, t->geo[i].interleave); | |
450 | } | |
451 | break; | |
452 | } | |
453 | ||
454 | default: | |
455 | DEBUG(2, "Unknown tuple code %d", tuple.TupleCode); | |
456 | } | |
457 | ||
458 | rc = pcmcia_get_next_tuple(link->handle, &tuple); | |
459 | } | |
460 | if(!dev->pcmcia_map.size) | |
461 | dev->pcmcia_map.size = MAX_PCMCIA_ADDR; | |
462 | ||
463 | if(!dev->pcmcia_map.bankwidth) | |
464 | dev->pcmcia_map.bankwidth = 2; | |
465 | ||
466 | if(force_size) { | |
467 | dev->pcmcia_map.size = force_size << 20; | |
468 | DEBUG(2, "size forced to %dM", force_size); | |
469 | } | |
470 | ||
471 | if(bankwidth) { | |
472 | dev->pcmcia_map.bankwidth = bankwidth; | |
473 | DEBUG(2, "bankwidth forced to %d", bankwidth); | |
474 | } | |
475 | ||
476 | dev->pcmcia_map.name = dev->mtd_name; | |
477 | if(!dev->mtd_name[0]) { | |
478 | strcpy(dev->mtd_name, "PCMCIA Memory card"); | |
479 | *new_name = 1; | |
480 | } | |
481 | ||
482 | DEBUG(1, "Device: Size: %lu Width:%d Name: %s", | |
483 | dev->pcmcia_map.size, dev->pcmcia_map.bankwidth << 3, dev->mtd_name); | |
484 | } | |
485 | ||
486 | ||
487 | /* pcmciamtd_config() is scheduled to run after a CARD_INSERTION event | |
488 | * is received, to configure the PCMCIA socket, and to make the | |
489 | * MTD device available to the system. | |
490 | */ | |
491 | ||
492 | #define CS_CHECK(fn, ret) \ | |
493 | do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0) | |
494 | ||
495 | static void pcmciamtd_config(dev_link_t *link) | |
496 | { | |
497 | struct pcmciamtd_dev *dev = link->priv; | |
498 | struct mtd_info *mtd = NULL; | |
499 | cs_status_t status; | |
500 | win_req_t req; | |
501 | int last_ret = 0, last_fn = 0; | |
502 | int ret; | |
503 | int i; | |
504 | config_info_t t; | |
505 | static char *probes[] = { "jedec_probe", "cfi_probe" }; | |
506 | cisinfo_t cisinfo; | |
507 | int new_name = 0; | |
508 | ||
509 | DEBUG(3, "link=0x%p", link); | |
510 | ||
511 | /* Configure card */ | |
512 | link->state |= DEV_CONFIG; | |
513 | ||
514 | DEBUG(2, "Validating CIS"); | |
515 | ret = pcmcia_validate_cis(link->handle, &cisinfo); | |
516 | if(ret != CS_SUCCESS) { | |
517 | cs_error(link->handle, GetTupleData, ret); | |
518 | } else { | |
519 | DEBUG(2, "ValidateCIS found %d chains", cisinfo.Chains); | |
520 | } | |
521 | ||
522 | card_settings(dev, link, &new_name); | |
523 | ||
524 | dev->pcmcia_map.phys = NO_XIP; | |
525 | dev->pcmcia_map.copy_from = pcmcia_copy_from_remap; | |
526 | dev->pcmcia_map.copy_to = pcmcia_copy_to_remap; | |
527 | if (dev->pcmcia_map.bankwidth == 1) { | |
528 | dev->pcmcia_map.read = pcmcia_read8_remap; | |
529 | dev->pcmcia_map.write = pcmcia_write8_remap; | |
530 | } else { | |
531 | dev->pcmcia_map.read = pcmcia_read16_remap; | |
532 | dev->pcmcia_map.write = pcmcia_write16_remap; | |
533 | } | |
534 | if(setvpp == 1) | |
535 | dev->pcmcia_map.set_vpp = pcmciamtd_set_vpp; | |
536 | ||
537 | /* Request a memory window for PCMCIA. Some architeures can map windows upto the maximum | |
538 | that PCMCIA can support (64MiB) - this is ideal and we aim for a window the size of the | |
539 | whole card - otherwise we try smaller windows until we succeed */ | |
540 | ||
541 | req.Attributes = WIN_MEMORY_TYPE_CM | WIN_ENABLE; | |
542 | req.Attributes |= (dev->pcmcia_map.bankwidth == 1) ? WIN_DATA_WIDTH_8 : WIN_DATA_WIDTH_16; | |
543 | req.Base = 0; | |
544 | req.AccessSpeed = mem_speed; | |
545 | link->win = (window_handle_t)link->handle; | |
546 | req.Size = (force_size) ? force_size << 20 : MAX_PCMCIA_ADDR; | |
547 | dev->win_size = 0; | |
548 | ||
549 | do { | |
550 | int ret; | |
551 | DEBUG(2, "requesting window with size = %dKiB memspeed = %d", | |
552 | req.Size >> 10, req.AccessSpeed); | |
553 | ret = pcmcia_request_window(&link->handle, &req, &link->win); | |
554 | DEBUG(2, "ret = %d dev->win_size = %d", ret, dev->win_size); | |
555 | if(ret) { | |
556 | req.Size >>= 1; | |
557 | } else { | |
558 | DEBUG(2, "Got window of size %dKiB", req.Size >> 10); | |
559 | dev->win_size = req.Size; | |
560 | break; | |
561 | } | |
562 | } while(req.Size >= 0x1000); | |
563 | ||
564 | DEBUG(2, "dev->win_size = %d", dev->win_size); | |
565 | ||
566 | if(!dev->win_size) { | |
567 | err("Cant allocate memory window"); | |
568 | pcmciamtd_release(link); | |
569 | return; | |
570 | } | |
571 | DEBUG(1, "Allocated a window of %dKiB", dev->win_size >> 10); | |
572 | ||
573 | /* Get write protect status */ | |
574 | CS_CHECK(GetStatus, pcmcia_get_status(link->handle, &status)); | |
575 | DEBUG(2, "status value: 0x%x window handle = 0x%8.8lx", | |
576 | status.CardState, (unsigned long)link->win); | |
577 | dev->win_base = ioremap(req.Base, req.Size); | |
578 | if(!dev->win_base) { | |
579 | err("ioremap(%lu, %u) failed", req.Base, req.Size); | |
580 | pcmciamtd_release(link); | |
581 | return; | |
582 | } | |
583 | DEBUG(1, "mapped window dev = %p req.base = 0x%lx base = %p size = 0x%x", | |
584 | dev, req.Base, dev->win_base, req.Size); | |
585 | ||
586 | dev->offset = 0; | |
587 | dev->pcmcia_map.map_priv_1 = (unsigned long)dev; | |
588 | dev->pcmcia_map.map_priv_2 = (unsigned long)link->win; | |
589 | ||
590 | DEBUG(2, "Getting configuration"); | |
591 | CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(link->handle, &t)); | |
592 | DEBUG(2, "Vcc = %d Vpp1 = %d Vpp2 = %d", t.Vcc, t.Vpp1, t.Vpp2); | |
593 | dev->vpp = (vpp) ? vpp : t.Vpp1; | |
594 | link->conf.Attributes = 0; | |
595 | link->conf.Vcc = t.Vcc; | |
596 | if(setvpp == 2) { | |
597 | link->conf.Vpp1 = dev->vpp; | |
598 | link->conf.Vpp2 = dev->vpp; | |
599 | } else { | |
600 | link->conf.Vpp1 = 0; | |
601 | link->conf.Vpp2 = 0; | |
602 | } | |
603 | ||
604 | link->conf.IntType = INT_MEMORY; | |
605 | link->conf.ConfigBase = t.ConfigBase; | |
606 | link->conf.Status = t.Status; | |
607 | link->conf.Pin = t.Pin; | |
608 | link->conf.Copy = t.Copy; | |
609 | link->conf.ExtStatus = t.ExtStatus; | |
610 | link->conf.ConfigIndex = 0; | |
611 | link->conf.Present = t.Present; | |
612 | DEBUG(2, "Setting Configuration"); | |
613 | ret = pcmcia_request_configuration(link->handle, &link->conf); | |
614 | if(ret != CS_SUCCESS) { | |
615 | cs_error(link->handle, RequestConfiguration, ret); | |
616 | } | |
617 | ||
618 | if(mem_type == 1) { | |
619 | mtd = do_map_probe("map_ram", &dev->pcmcia_map); | |
620 | } else if(mem_type == 2) { | |
621 | mtd = do_map_probe("map_rom", &dev->pcmcia_map); | |
622 | } else { | |
623 | for(i = 0; i < sizeof(probes) / sizeof(char *); i++) { | |
624 | DEBUG(1, "Trying %s", probes[i]); | |
625 | mtd = do_map_probe(probes[i], &dev->pcmcia_map); | |
626 | if(mtd) | |
627 | break; | |
628 | ||
629 | DEBUG(1, "FAILED: %s", probes[i]); | |
630 | } | |
631 | } | |
632 | ||
633 | if(!mtd) { | |
634 | DEBUG(1, "Cant find an MTD"); | |
635 | pcmciamtd_release(link); | |
636 | return; | |
637 | } | |
638 | ||
639 | dev->mtd_info = mtd; | |
640 | mtd->owner = THIS_MODULE; | |
641 | ||
642 | if(new_name) { | |
643 | int size = 0; | |
644 | char unit = ' '; | |
645 | /* Since we are using a default name, make it better by adding in the | |
646 | size */ | |
647 | if(mtd->size < 1048576) { /* <1MiB in size, show size in KiB */ | |
648 | size = mtd->size >> 10; | |
649 | unit = 'K'; | |
650 | } else { | |
651 | size = mtd->size >> 20; | |
652 | unit = 'M'; | |
653 | } | |
654 | snprintf(dev->mtd_name, sizeof(dev->mtd_name), "%d%ciB %s", size, unit, "PCMCIA Memory card"); | |
655 | } | |
656 | ||
657 | /* If the memory found is fits completely into the mapped PCMCIA window, | |
658 | use the faster non-remapping read/write functions */ | |
659 | if(mtd->size <= dev->win_size) { | |
660 | DEBUG(1, "Using non remapping memory functions"); | |
661 | dev->pcmcia_map.map_priv_1 = (unsigned long)&(dev->link.state); | |
662 | dev->pcmcia_map.map_priv_2 = (unsigned long)dev->win_base; | |
663 | if (dev->pcmcia_map.bankwidth == 1) { | |
664 | dev->pcmcia_map.read = pcmcia_read8; | |
665 | dev->pcmcia_map.write = pcmcia_write8; | |
666 | } else { | |
667 | dev->pcmcia_map.read = pcmcia_read16; | |
668 | dev->pcmcia_map.write = pcmcia_write16; | |
669 | } | |
670 | dev->pcmcia_map.copy_from = pcmcia_copy_from; | |
671 | dev->pcmcia_map.copy_to = pcmcia_copy_to; | |
672 | } | |
673 | ||
674 | if(add_mtd_device(mtd)) { | |
675 | map_destroy(mtd); | |
676 | dev->mtd_info = NULL; | |
677 | err("Couldnt register MTD device"); | |
678 | pcmciamtd_release(link); | |
679 | return; | |
680 | } | |
681 | snprintf(dev->node.dev_name, sizeof(dev->node.dev_name), "mtd%d", mtd->index); | |
682 | info("mtd%d: %s", mtd->index, mtd->name); | |
683 | link->state &= ~DEV_CONFIG_PENDING; | |
684 | link->dev = &dev->node; | |
685 | return; | |
686 | ||
687 | cs_failed: | |
688 | cs_error(link->handle, last_fn, last_ret); | |
689 | err("CS Error, exiting"); | |
690 | pcmciamtd_release(link); | |
691 | return; | |
692 | } | |
693 | ||
694 | ||
695 | /* The card status event handler. Mostly, this schedules other | |
696 | * stuff to run after an event is received. A CARD_REMOVAL event | |
697 | * also sets some flags to discourage the driver from trying | |
698 | * to talk to the card any more. | |
699 | */ | |
700 | ||
701 | static int pcmciamtd_event(event_t event, int priority, | |
702 | event_callback_args_t *args) | |
703 | { | |
704 | dev_link_t *link = args->client_data; | |
705 | ||
706 | DEBUG(1, "event=0x%06x", event); | |
707 | switch (event) { | |
708 | case CS_EVENT_CARD_REMOVAL: | |
709 | DEBUG(2, "EVENT_CARD_REMOVAL"); | |
710 | link->state &= ~DEV_PRESENT; | |
711 | if (link->state & DEV_CONFIG) { | |
712 | struct pcmciamtd_dev *dev = link->priv; | |
713 | if(dev->mtd_info) { | |
714 | del_mtd_device(dev->mtd_info); | |
715 | info("mtd%d: Removed", dev->mtd_info->index); | |
716 | } | |
717 | pcmciamtd_release(link); | |
718 | } | |
719 | break; | |
720 | case CS_EVENT_CARD_INSERTION: | |
721 | DEBUG(2, "EVENT_CARD_INSERTION"); | |
722 | link->state |= DEV_PRESENT | DEV_CONFIG_PENDING; | |
723 | pcmciamtd_config(link); | |
724 | break; | |
725 | case CS_EVENT_PM_SUSPEND: | |
726 | DEBUG(2, "EVENT_PM_SUSPEND"); | |
727 | link->state |= DEV_SUSPEND; | |
728 | /* Fall through... */ | |
729 | case CS_EVENT_RESET_PHYSICAL: | |
730 | DEBUG(2, "EVENT_RESET_PHYSICAL"); | |
731 | /* get_lock(link); */ | |
732 | break; | |
733 | case CS_EVENT_PM_RESUME: | |
734 | DEBUG(2, "EVENT_PM_RESUME"); | |
735 | link->state &= ~DEV_SUSPEND; | |
736 | /* Fall through... */ | |
737 | case CS_EVENT_CARD_RESET: | |
738 | DEBUG(2, "EVENT_CARD_RESET"); | |
739 | /* free_lock(link); */ | |
740 | break; | |
741 | default: | |
742 | DEBUG(2, "Unknown event %d", event); | |
743 | } | |
744 | return 0; | |
745 | } | |
746 | ||
747 | ||
748 | /* This deletes a driver "instance". The device is de-registered | |
749 | * with Card Services. If it has been released, all local data | |
750 | * structures are freed. Otherwise, the structures will be freed | |
751 | * when the device is released. | |
752 | */ | |
753 | ||
754 | static void pcmciamtd_detach(dev_link_t *link) | |
755 | { | |
756 | DEBUG(3, "link=0x%p", link); | |
757 | ||
758 | if(link->state & DEV_CONFIG) { | |
759 | pcmciamtd_release(link); | |
760 | } | |
761 | ||
762 | if (link->handle) { | |
763 | int ret; | |
764 | DEBUG(2, "Deregistering with card services"); | |
765 | ret = pcmcia_deregister_client(link->handle); | |
766 | if (ret != CS_SUCCESS) | |
767 | cs_error(link->handle, DeregisterClient, ret); | |
768 | } | |
769 | ||
770 | link->state |= DEV_STALE_LINK; | |
771 | } | |
772 | ||
773 | ||
774 | /* pcmciamtd_attach() creates an "instance" of the driver, allocating | |
775 | * local data structures for one device. The device is registered | |
776 | * with Card Services. | |
777 | */ | |
778 | ||
779 | static dev_link_t *pcmciamtd_attach(void) | |
780 | { | |
781 | struct pcmciamtd_dev *dev; | |
782 | dev_link_t *link; | |
783 | client_reg_t client_reg; | |
784 | int ret; | |
785 | ||
786 | /* Create new memory card device */ | |
787 | dev = kmalloc(sizeof(*dev), GFP_KERNEL); | |
788 | if (!dev) return NULL; | |
789 | DEBUG(1, "dev=0x%p", dev); | |
790 | ||
791 | memset(dev, 0, sizeof(*dev)); | |
792 | link = &dev->link; | |
793 | link->priv = dev; | |
794 | ||
795 | link->conf.Attributes = 0; | |
796 | link->conf.IntType = INT_MEMORY; | |
797 | ||
798 | link->next = dev_list; | |
799 | dev_list = link; | |
800 | ||
801 | /* Register with Card Services */ | |
802 | client_reg.dev_info = &dev_info; | |
803 | client_reg.EventMask = | |
804 | CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET | | |
805 | CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL | | |
806 | CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME; | |
807 | client_reg.event_handler = &pcmciamtd_event; | |
808 | client_reg.Version = 0x0210; | |
809 | client_reg.event_callback_args.client_data = link; | |
810 | DEBUG(2, "Calling RegisterClient"); | |
811 | ret = pcmcia_register_client(&link->handle, &client_reg); | |
812 | if (ret != 0) { | |
813 | cs_error(link->handle, RegisterClient, ret); | |
814 | pcmciamtd_detach(link); | |
815 | return NULL; | |
816 | } | |
817 | DEBUG(2, "link = %p", link); | |
818 | return link; | |
819 | } | |
820 | ||
821 | ||
822 | static struct pcmcia_driver pcmciamtd_driver = { | |
823 | .drv = { | |
824 | .name = "pcmciamtd" | |
825 | }, | |
826 | .attach = pcmciamtd_attach, | |
827 | .detach = pcmciamtd_detach, | |
828 | .owner = THIS_MODULE | |
829 | }; | |
830 | ||
831 | ||
832 | static int __init init_pcmciamtd(void) | |
833 | { | |
834 | info(DRIVER_DESC " " DRIVER_VERSION); | |
835 | ||
836 | if(bankwidth && bankwidth != 1 && bankwidth != 2) { | |
837 | info("bad bankwidth (%d), using default", bankwidth); | |
838 | bankwidth = 2; | |
839 | } | |
840 | if(force_size && (force_size < 1 || force_size > 64)) { | |
841 | info("bad force_size (%d), using default", force_size); | |
842 | force_size = 0; | |
843 | } | |
844 | if(mem_type && mem_type != 1 && mem_type != 2) { | |
845 | info("bad mem_type (%d), using default", mem_type); | |
846 | mem_type = 0; | |
847 | } | |
848 | return pcmcia_register_driver(&pcmciamtd_driver); | |
849 | } | |
850 | ||
851 | ||
852 | static void __exit exit_pcmciamtd(void) | |
853 | { | |
854 | DEBUG(1, DRIVER_DESC " unloading"); | |
855 | pcmcia_unregister_driver(&pcmciamtd_driver); | |
856 | BUG_ON(dev_list != NULL); | |
857 | } | |
858 | ||
859 | module_init(init_pcmciamtd); | |
860 | module_exit(exit_pcmciamtd); |