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