]>
Commit | Line | Data |
---|---|---|
cd5f6346 KP |
1 | /* |
2 | * linux/drivers/mtd/onenand/onenand_base.c | |
3 | * | |
75384b0d | 4 | * Copyright (C) 2005-2007 Samsung Electronics |
cd5f6346 KP |
5 | * Kyungmin Park <kyungmin.park@samsung.com> |
6 | * | |
81280d58 AH |
7 | * Credits: |
8 | * Adrian Hunter <ext-adrian.hunter@nokia.com>: | |
9 | * auto-placement support, read-while load support, various fixes | |
10 | * Copyright (C) Nokia Corporation, 2007 | |
11 | * | |
5988af23 RH |
12 | * Vishak G <vishak.g at samsung.com>, Rohit Hagargundgi <h.rohit at samsung.com> |
13 | * Flex-OneNAND support | |
14 | * Copyright (C) Samsung Electronics, 2008 | |
15 | * | |
cd5f6346 KP |
16 | * This program is free software; you can redistribute it and/or modify |
17 | * it under the terms of the GNU General Public License version 2 as | |
18 | * published by the Free Software Foundation. | |
19 | */ | |
20 | ||
21 | #include <linux/kernel.h> | |
22 | #include <linux/module.h> | |
c90173f0 | 23 | #include <linux/moduleparam.h> |
cd5f6346 | 24 | #include <linux/init.h> |
015953d7 | 25 | #include <linux/sched.h> |
6c77fd64 | 26 | #include <linux/delay.h> |
2c22120f | 27 | #include <linux/interrupt.h> |
015953d7 | 28 | #include <linux/jiffies.h> |
cd5f6346 KP |
29 | #include <linux/mtd/mtd.h> |
30 | #include <linux/mtd/onenand.h> | |
31 | #include <linux/mtd/partitions.h> | |
32 | ||
33 | #include <asm/io.h> | |
34 | ||
5988af23 RH |
35 | /* Default Flex-OneNAND boundary and lock respectively */ |
36 | static int flex_bdry[MAX_DIES * 2] = { -1, 0, -1, 0 }; | |
37 | ||
c90173f0 AS |
38 | module_param_array(flex_bdry, int, NULL, 0400); |
39 | MODULE_PARM_DESC(flex_bdry, "SLC Boundary information for Flex-OneNAND" | |
40 | "Syntax:flex_bdry=DIE_BDRY,LOCK,..." | |
41 | "DIE_BDRY: SLC boundary of the die" | |
42 | "LOCK: Locking information for SLC boundary" | |
43 | " : 0->Set boundary in unlocked status" | |
44 | " : 1->Set boundary in locked status"); | |
45 | ||
5988af23 RH |
46 | /** |
47 | * onenand_oob_128 - oob info for Flex-Onenand with 4KB page | |
48 | * For now, we expose only 64 out of 80 ecc bytes | |
49 | */ | |
50 | static struct nand_ecclayout onenand_oob_128 = { | |
51 | .eccbytes = 64, | |
52 | .eccpos = { | |
53 | 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, | |
54 | 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, | |
55 | 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, | |
56 | 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, | |
57 | 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, | |
58 | 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, | |
59 | 102, 103, 104, 105 | |
60 | }, | |
61 | .oobfree = { | |
62 | {2, 4}, {18, 4}, {34, 4}, {50, 4}, | |
63 | {66, 4}, {82, 4}, {98, 4}, {114, 4} | |
64 | } | |
65 | }; | |
66 | ||
cd5f6346 KP |
67 | /** |
68 | * onenand_oob_64 - oob info for large (2KB) page | |
69 | */ | |
5bd34c09 | 70 | static struct nand_ecclayout onenand_oob_64 = { |
cd5f6346 KP |
71 | .eccbytes = 20, |
72 | .eccpos = { | |
73 | 8, 9, 10, 11, 12, | |
74 | 24, 25, 26, 27, 28, | |
75 | 40, 41, 42, 43, 44, | |
76 | 56, 57, 58, 59, 60, | |
77 | }, | |
78 | .oobfree = { | |
79 | {2, 3}, {14, 2}, {18, 3}, {30, 2}, | |
d9777f1c JL |
80 | {34, 3}, {46, 2}, {50, 3}, {62, 2} |
81 | } | |
cd5f6346 KP |
82 | }; |
83 | ||
84 | /** | |
85 | * onenand_oob_32 - oob info for middle (1KB) page | |
86 | */ | |
5bd34c09 | 87 | static struct nand_ecclayout onenand_oob_32 = { |
cd5f6346 KP |
88 | .eccbytes = 10, |
89 | .eccpos = { | |
90 | 8, 9, 10, 11, 12, | |
91 | 24, 25, 26, 27, 28, | |
92 | }, | |
93 | .oobfree = { {2, 3}, {14, 2}, {18, 3}, {30, 2} } | |
94 | }; | |
95 | ||
96 | static const unsigned char ffchars[] = { | |
97 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
98 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 16 */ | |
99 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
100 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 32 */ | |
101 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
102 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 48 */ | |
103 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
104 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 64 */ | |
5988af23 RH |
105 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
106 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 80 */ | |
107 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
108 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 96 */ | |
109 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
110 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 112 */ | |
111 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
112 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 128 */ | |
cd5f6346 KP |
113 | }; |
114 | ||
115 | /** | |
116 | * onenand_readw - [OneNAND Interface] Read OneNAND register | |
117 | * @param addr address to read | |
118 | * | |
119 | * Read OneNAND register | |
120 | */ | |
121 | static unsigned short onenand_readw(void __iomem *addr) | |
122 | { | |
123 | return readw(addr); | |
124 | } | |
125 | ||
126 | /** | |
127 | * onenand_writew - [OneNAND Interface] Write OneNAND register with value | |
128 | * @param value value to write | |
129 | * @param addr address to write | |
130 | * | |
131 | * Write OneNAND register with value | |
132 | */ | |
133 | static void onenand_writew(unsigned short value, void __iomem *addr) | |
134 | { | |
135 | writew(value, addr); | |
136 | } | |
137 | ||
138 | /** | |
139 | * onenand_block_address - [DEFAULT] Get block address | |
83a36838 | 140 | * @param this onenand chip data structure |
cd5f6346 KP |
141 | * @param block the block |
142 | * @return translated block address if DDP, otherwise same | |
143 | * | |
144 | * Setup Start Address 1 Register (F100h) | |
145 | */ | |
83a36838 | 146 | static int onenand_block_address(struct onenand_chip *this, int block) |
cd5f6346 | 147 | { |
738d61f5 KP |
148 | /* Device Flash Core select, NAND Flash Block Address */ |
149 | if (block & this->density_mask) | |
150 | return ONENAND_DDP_CHIP1 | (block ^ this->density_mask); | |
cd5f6346 KP |
151 | |
152 | return block; | |
153 | } | |
154 | ||
155 | /** | |
156 | * onenand_bufferram_address - [DEFAULT] Get bufferram address | |
83a36838 | 157 | * @param this onenand chip data structure |
cd5f6346 KP |
158 | * @param block the block |
159 | * @return set DBS value if DDP, otherwise 0 | |
160 | * | |
161 | * Setup Start Address 2 Register (F101h) for DDP | |
162 | */ | |
83a36838 | 163 | static int onenand_bufferram_address(struct onenand_chip *this, int block) |
cd5f6346 | 164 | { |
738d61f5 KP |
165 | /* Device BufferRAM Select */ |
166 | if (block & this->density_mask) | |
167 | return ONENAND_DDP_CHIP1; | |
cd5f6346 | 168 | |
738d61f5 | 169 | return ONENAND_DDP_CHIP0; |
cd5f6346 KP |
170 | } |
171 | ||
172 | /** | |
173 | * onenand_page_address - [DEFAULT] Get page address | |
174 | * @param page the page address | |
175 | * @param sector the sector address | |
176 | * @return combined page and sector address | |
177 | * | |
178 | * Setup Start Address 8 Register (F107h) | |
179 | */ | |
180 | static int onenand_page_address(int page, int sector) | |
181 | { | |
182 | /* Flash Page Address, Flash Sector Address */ | |
183 | int fpa, fsa; | |
184 | ||
185 | fpa = page & ONENAND_FPA_MASK; | |
186 | fsa = sector & ONENAND_FSA_MASK; | |
187 | ||
188 | return ((fpa << ONENAND_FPA_SHIFT) | fsa); | |
189 | } | |
190 | ||
191 | /** | |
192 | * onenand_buffer_address - [DEFAULT] Get buffer address | |
193 | * @param dataram1 DataRAM index | |
194 | * @param sectors the sector address | |
195 | * @param count the number of sectors | |
196 | * @return the start buffer value | |
197 | * | |
198 | * Setup Start Buffer Register (F200h) | |
199 | */ | |
200 | static int onenand_buffer_address(int dataram1, int sectors, int count) | |
201 | { | |
202 | int bsa, bsc; | |
203 | ||
204 | /* BufferRAM Sector Address */ | |
205 | bsa = sectors & ONENAND_BSA_MASK; | |
206 | ||
207 | if (dataram1) | |
208 | bsa |= ONENAND_BSA_DATARAM1; /* DataRAM1 */ | |
209 | else | |
210 | bsa |= ONENAND_BSA_DATARAM0; /* DataRAM0 */ | |
211 | ||
212 | /* BufferRAM Sector Count */ | |
213 | bsc = count & ONENAND_BSC_MASK; | |
214 | ||
215 | return ((bsa << ONENAND_BSA_SHIFT) | bsc); | |
216 | } | |
217 | ||
5988af23 RH |
218 | /** |
219 | * flexonenand_block- For given address return block number | |
220 | * @param this - OneNAND device structure | |
221 | * @param addr - Address for which block number is needed | |
222 | */ | |
223 | static unsigned flexonenand_block(struct onenand_chip *this, loff_t addr) | |
224 | { | |
225 | unsigned boundary, blk, die = 0; | |
226 | ||
227 | if (ONENAND_IS_DDP(this) && addr >= this->diesize[0]) { | |
228 | die = 1; | |
229 | addr -= this->diesize[0]; | |
230 | } | |
231 | ||
232 | boundary = this->boundary[die]; | |
233 | ||
234 | blk = addr >> (this->erase_shift - 1); | |
235 | if (blk > boundary) | |
236 | blk = (blk + boundary + 1) >> 1; | |
237 | ||
238 | blk += die ? this->density_mask : 0; | |
239 | return blk; | |
240 | } | |
241 | ||
242 | inline unsigned onenand_block(struct onenand_chip *this, loff_t addr) | |
243 | { | |
244 | if (!FLEXONENAND(this)) | |
245 | return addr >> this->erase_shift; | |
246 | return flexonenand_block(this, addr); | |
247 | } | |
248 | ||
249 | /** | |
250 | * flexonenand_addr - Return address of the block | |
251 | * @this: OneNAND device structure | |
252 | * @block: Block number on Flex-OneNAND | |
253 | * | |
254 | * Return address of the block | |
255 | */ | |
256 | static loff_t flexonenand_addr(struct onenand_chip *this, int block) | |
257 | { | |
258 | loff_t ofs = 0; | |
259 | int die = 0, boundary; | |
260 | ||
261 | if (ONENAND_IS_DDP(this) && block >= this->density_mask) { | |
262 | block -= this->density_mask; | |
263 | die = 1; | |
264 | ofs = this->diesize[0]; | |
265 | } | |
266 | ||
267 | boundary = this->boundary[die]; | |
268 | ofs += (loff_t)block << (this->erase_shift - 1); | |
269 | if (block > (boundary + 1)) | |
270 | ofs += (loff_t)(block - boundary - 1) << (this->erase_shift - 1); | |
271 | return ofs; | |
272 | } | |
273 | ||
274 | loff_t onenand_addr(struct onenand_chip *this, int block) | |
275 | { | |
276 | if (!FLEXONENAND(this)) | |
277 | return (loff_t)block << this->erase_shift; | |
278 | return flexonenand_addr(this, block); | |
279 | } | |
280 | EXPORT_SYMBOL(onenand_addr); | |
281 | ||
e71f04fc KP |
282 | /** |
283 | * onenand_get_density - [DEFAULT] Get OneNAND density | |
284 | * @param dev_id OneNAND device ID | |
285 | * | |
286 | * Get OneNAND density from device ID | |
287 | */ | |
288 | static inline int onenand_get_density(int dev_id) | |
289 | { | |
290 | int density = dev_id >> ONENAND_DEVICE_DENSITY_SHIFT; | |
291 | return (density & ONENAND_DEVICE_DENSITY_MASK); | |
292 | } | |
293 | ||
5988af23 RH |
294 | /** |
295 | * flexonenand_region - [Flex-OneNAND] Return erase region of addr | |
296 | * @param mtd MTD device structure | |
297 | * @param addr address whose erase region needs to be identified | |
298 | */ | |
299 | int flexonenand_region(struct mtd_info *mtd, loff_t addr) | |
300 | { | |
301 | int i; | |
302 | ||
303 | for (i = 0; i < mtd->numeraseregions; i++) | |
304 | if (addr < mtd->eraseregions[i].offset) | |
305 | break; | |
306 | return i - 1; | |
307 | } | |
308 | EXPORT_SYMBOL(flexonenand_region); | |
309 | ||
cd5f6346 KP |
310 | /** |
311 | * onenand_command - [DEFAULT] Send command to OneNAND device | |
312 | * @param mtd MTD device structure | |
313 | * @param cmd the command to be sent | |
314 | * @param addr offset to read from or write to | |
315 | * @param len number of bytes to read or write | |
316 | * | |
317 | * Send command to OneNAND device. This function is used for middle/large page | |
318 | * devices (1KB/2KB Bytes per page) | |
319 | */ | |
320 | static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t len) | |
321 | { | |
322 | struct onenand_chip *this = mtd->priv; | |
b21b72cf | 323 | int value, block, page; |
cd5f6346 KP |
324 | |
325 | /* Address translation */ | |
326 | switch (cmd) { | |
327 | case ONENAND_CMD_UNLOCK: | |
328 | case ONENAND_CMD_LOCK: | |
329 | case ONENAND_CMD_LOCK_TIGHT: | |
28b79ff9 | 330 | case ONENAND_CMD_UNLOCK_ALL: |
cd5f6346 KP |
331 | block = -1; |
332 | page = -1; | |
333 | break; | |
334 | ||
5988af23 RH |
335 | case FLEXONENAND_CMD_PI_ACCESS: |
336 | /* addr contains die index */ | |
337 | block = addr * this->density_mask; | |
338 | page = -1; | |
339 | break; | |
340 | ||
cd5f6346 KP |
341 | case ONENAND_CMD_ERASE: |
342 | case ONENAND_CMD_BUFFERRAM: | |
493c6460 | 343 | case ONENAND_CMD_OTP_ACCESS: |
5988af23 | 344 | block = onenand_block(this, addr); |
cd5f6346 KP |
345 | page = -1; |
346 | break; | |
347 | ||
5988af23 RH |
348 | case FLEXONENAND_CMD_READ_PI: |
349 | cmd = ONENAND_CMD_READ; | |
350 | block = addr * this->density_mask; | |
351 | page = 0; | |
352 | break; | |
353 | ||
cd5f6346 | 354 | default: |
5988af23 RH |
355 | block = onenand_block(this, addr); |
356 | page = (int) (addr - onenand_addr(this, block)) >> this->page_shift; | |
ee9745fc KP |
357 | |
358 | if (ONENAND_IS_2PLANE(this)) { | |
359 | /* Make the even block number */ | |
360 | block &= ~1; | |
361 | /* Is it the odd plane? */ | |
362 | if (addr & this->writesize) | |
363 | block++; | |
364 | page >>= 1; | |
365 | } | |
cd5f6346 KP |
366 | page &= this->page_mask; |
367 | break; | |
368 | } | |
369 | ||
370 | /* NOTE: The setting order of the registers is very important! */ | |
371 | if (cmd == ONENAND_CMD_BUFFERRAM) { | |
372 | /* Select DataRAM for DDP */ | |
83a36838 | 373 | value = onenand_bufferram_address(this, block); |
cd5f6346 KP |
374 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); |
375 | ||
5988af23 | 376 | if (ONENAND_IS_MLC(this) || ONENAND_IS_2PLANE(this)) |
ee9745fc KP |
377 | /* It is always BufferRAM0 */ |
378 | ONENAND_SET_BUFFERRAM0(this); | |
379 | else | |
380 | /* Switch to the next data buffer */ | |
381 | ONENAND_SET_NEXT_BUFFERRAM(this); | |
cd5f6346 KP |
382 | |
383 | return 0; | |
384 | } | |
385 | ||
386 | if (block != -1) { | |
387 | /* Write 'DFS, FBA' of Flash */ | |
83a36838 | 388 | value = onenand_block_address(this, block); |
cd5f6346 | 389 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1); |
3cecf69e | 390 | |
b21b72cf KP |
391 | /* Select DataRAM for DDP */ |
392 | value = onenand_bufferram_address(this, block); | |
393 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); | |
cd5f6346 KP |
394 | } |
395 | ||
396 | if (page != -1) { | |
60d84f97 | 397 | /* Now we use page size operation */ |
5988af23 | 398 | int sectors = 0, count = 0; |
cd5f6346 KP |
399 | int dataram; |
400 | ||
401 | switch (cmd) { | |
5988af23 | 402 | case FLEXONENAND_CMD_RECOVER_LSB: |
cd5f6346 KP |
403 | case ONENAND_CMD_READ: |
404 | case ONENAND_CMD_READOOB: | |
5988af23 RH |
405 | if (ONENAND_IS_MLC(this)) |
406 | /* It is always BufferRAM0 */ | |
407 | dataram = ONENAND_SET_BUFFERRAM0(this); | |
408 | else | |
409 | dataram = ONENAND_SET_NEXT_BUFFERRAM(this); | |
cd5f6346 KP |
410 | break; |
411 | ||
412 | default: | |
ee9745fc KP |
413 | if (ONENAND_IS_2PLANE(this) && cmd == ONENAND_CMD_PROG) |
414 | cmd = ONENAND_CMD_2X_PROG; | |
cd5f6346 KP |
415 | dataram = ONENAND_CURRENT_BUFFERRAM(this); |
416 | break; | |
417 | } | |
418 | ||
419 | /* Write 'FPA, FSA' of Flash */ | |
420 | value = onenand_page_address(page, sectors); | |
421 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS8); | |
422 | ||
423 | /* Write 'BSA, BSC' of DataRAM */ | |
424 | value = onenand_buffer_address(dataram, sectors, count); | |
425 | this->write_word(value, this->base + ONENAND_REG_START_BUFFER); | |
cd5f6346 KP |
426 | } |
427 | ||
428 | /* Interrupt clear */ | |
429 | this->write_word(ONENAND_INT_CLEAR, this->base + ONENAND_REG_INTERRUPT); | |
430 | ||
431 | /* Write command */ | |
432 | this->write_word(cmd, this->base + ONENAND_REG_COMMAND); | |
433 | ||
434 | return 0; | |
435 | } | |
436 | ||
5988af23 RH |
437 | /** |
438 | * onenand_read_ecc - return ecc status | |
439 | * @param this onenand chip structure | |
440 | */ | |
441 | static inline int onenand_read_ecc(struct onenand_chip *this) | |
442 | { | |
443 | int ecc, i, result = 0; | |
444 | ||
445 | if (!FLEXONENAND(this)) | |
446 | return this->read_word(this->base + ONENAND_REG_ECC_STATUS); | |
447 | ||
448 | for (i = 0; i < 4; i++) { | |
449 | ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS + i); | |
450 | if (likely(!ecc)) | |
451 | continue; | |
452 | if (ecc & FLEXONENAND_UNCORRECTABLE_ERROR) | |
453 | return ONENAND_ECC_2BIT_ALL; | |
454 | else | |
455 | result = ONENAND_ECC_1BIT_ALL; | |
456 | } | |
457 | ||
458 | return result; | |
459 | } | |
460 | ||
cd5f6346 KP |
461 | /** |
462 | * onenand_wait - [DEFAULT] wait until the command is done | |
463 | * @param mtd MTD device structure | |
464 | * @param state state to select the max. timeout value | |
465 | * | |
466 | * Wait for command done. This applies to all OneNAND command | |
467 | * Read can take up to 30us, erase up to 2ms and program up to 350us | |
468 | * according to general OneNAND specs | |
469 | */ | |
470 | static int onenand_wait(struct mtd_info *mtd, int state) | |
471 | { | |
472 | struct onenand_chip * this = mtd->priv; | |
473 | unsigned long timeout; | |
474 | unsigned int flags = ONENAND_INT_MASTER; | |
475 | unsigned int interrupt = 0; | |
2fd32d4a | 476 | unsigned int ctrl; |
cd5f6346 KP |
477 | |
478 | /* The 20 msec is enough */ | |
479 | timeout = jiffies + msecs_to_jiffies(20); | |
480 | while (time_before(jiffies, timeout)) { | |
481 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); | |
482 | ||
483 | if (interrupt & flags) | |
484 | break; | |
485 | ||
486 | if (state != FL_READING) | |
487 | cond_resched(); | |
488 | } | |
489 | /* To get correct interrupt status in timeout case */ | |
490 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); | |
491 | ||
492 | ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS); | |
493 | ||
83973b87 KP |
494 | /* |
495 | * In the Spec. it checks the controller status first | |
496 | * However if you get the correct information in case of | |
497 | * power off recovery (POR) test, it should read ECC status first | |
498 | */ | |
cd5f6346 | 499 | if (interrupt & ONENAND_INT_READ) { |
5988af23 | 500 | int ecc = onenand_read_ecc(this); |
f4f91ac3 | 501 | if (ecc) { |
b3c9f8bf | 502 | if (ecc & ONENAND_ECC_2BIT_ALL) { |
297758f8 AKS |
503 | printk(KERN_ERR "%s: ECC error = 0x%04x\n", |
504 | __func__, ecc); | |
f4f91ac3 | 505 | mtd->ecc_stats.failed++; |
30a7eb29 | 506 | return -EBADMSG; |
49dc08ee | 507 | } else if (ecc & ONENAND_ECC_1BIT_ALL) { |
297758f8 AKS |
508 | printk(KERN_DEBUG "%s: correctable ECC error = 0x%04x\n", |
509 | __func__, ecc); | |
f4f91ac3 | 510 | mtd->ecc_stats.corrected++; |
49dc08ee | 511 | } |
cd5f6346 | 512 | } |
9d032801 | 513 | } else if (state == FL_READING) { |
297758f8 AKS |
514 | printk(KERN_ERR "%s: read timeout! ctrl=0x%04x intr=0x%04x\n", |
515 | __func__, ctrl, interrupt); | |
9d032801 | 516 | return -EIO; |
cd5f6346 KP |
517 | } |
518 | ||
83973b87 KP |
519 | /* If there's controller error, it's a real error */ |
520 | if (ctrl & ONENAND_CTRL_ERROR) { | |
297758f8 AKS |
521 | printk(KERN_ERR "%s: controller error = 0x%04x\n", |
522 | __func__, ctrl); | |
83973b87 | 523 | if (ctrl & ONENAND_CTRL_LOCK) |
297758f8 | 524 | printk(KERN_ERR "%s: it's locked error.\n", __func__); |
83973b87 KP |
525 | return -EIO; |
526 | } | |
527 | ||
cd5f6346 KP |
528 | return 0; |
529 | } | |
530 | ||
2c22120f KP |
531 | /* |
532 | * onenand_interrupt - [DEFAULT] onenand interrupt handler | |
533 | * @param irq onenand interrupt number | |
534 | * @param dev_id interrupt data | |
535 | * | |
536 | * complete the work | |
537 | */ | |
538 | static irqreturn_t onenand_interrupt(int irq, void *data) | |
539 | { | |
06efcad0 | 540 | struct onenand_chip *this = data; |
2c22120f KP |
541 | |
542 | /* To handle shared interrupt */ | |
543 | if (!this->complete.done) | |
544 | complete(&this->complete); | |
545 | ||
546 | return IRQ_HANDLED; | |
547 | } | |
548 | ||
549 | /* | |
550 | * onenand_interrupt_wait - [DEFAULT] wait until the command is done | |
551 | * @param mtd MTD device structure | |
552 | * @param state state to select the max. timeout value | |
553 | * | |
554 | * Wait for command done. | |
555 | */ | |
556 | static int onenand_interrupt_wait(struct mtd_info *mtd, int state) | |
557 | { | |
558 | struct onenand_chip *this = mtd->priv; | |
559 | ||
2c22120f KP |
560 | wait_for_completion(&this->complete); |
561 | ||
562 | return onenand_wait(mtd, state); | |
563 | } | |
564 | ||
565 | /* | |
566 | * onenand_try_interrupt_wait - [DEFAULT] try interrupt wait | |
567 | * @param mtd MTD device structure | |
568 | * @param state state to select the max. timeout value | |
569 | * | |
570 | * Try interrupt based wait (It is used one-time) | |
571 | */ | |
572 | static int onenand_try_interrupt_wait(struct mtd_info *mtd, int state) | |
573 | { | |
574 | struct onenand_chip *this = mtd->priv; | |
575 | unsigned long remain, timeout; | |
576 | ||
577 | /* We use interrupt wait first */ | |
578 | this->wait = onenand_interrupt_wait; | |
579 | ||
2c22120f KP |
580 | timeout = msecs_to_jiffies(100); |
581 | remain = wait_for_completion_timeout(&this->complete, timeout); | |
582 | if (!remain) { | |
583 | printk(KERN_INFO "OneNAND: There's no interrupt. " | |
584 | "We use the normal wait\n"); | |
585 | ||
586 | /* Release the irq */ | |
587 | free_irq(this->irq, this); | |
c9ac5977 | 588 | |
2c22120f KP |
589 | this->wait = onenand_wait; |
590 | } | |
591 | ||
592 | return onenand_wait(mtd, state); | |
593 | } | |
594 | ||
595 | /* | |
596 | * onenand_setup_wait - [OneNAND Interface] setup onenand wait method | |
597 | * @param mtd MTD device structure | |
598 | * | |
599 | * There's two method to wait onenand work | |
600 | * 1. polling - read interrupt status register | |
601 | * 2. interrupt - use the kernel interrupt method | |
602 | */ | |
603 | static void onenand_setup_wait(struct mtd_info *mtd) | |
604 | { | |
605 | struct onenand_chip *this = mtd->priv; | |
606 | int syscfg; | |
607 | ||
608 | init_completion(&this->complete); | |
609 | ||
610 | if (this->irq <= 0) { | |
611 | this->wait = onenand_wait; | |
612 | return; | |
613 | } | |
614 | ||
615 | if (request_irq(this->irq, &onenand_interrupt, | |
616 | IRQF_SHARED, "onenand", this)) { | |
617 | /* If we can't get irq, use the normal wait */ | |
618 | this->wait = onenand_wait; | |
619 | return; | |
620 | } | |
621 | ||
622 | /* Enable interrupt */ | |
623 | syscfg = this->read_word(this->base + ONENAND_REG_SYS_CFG1); | |
624 | syscfg |= ONENAND_SYS_CFG1_IOBE; | |
625 | this->write_word(syscfg, this->base + ONENAND_REG_SYS_CFG1); | |
626 | ||
627 | this->wait = onenand_try_interrupt_wait; | |
628 | } | |
629 | ||
cd5f6346 KP |
630 | /** |
631 | * onenand_bufferram_offset - [DEFAULT] BufferRAM offset | |
632 | * @param mtd MTD data structure | |
633 | * @param area BufferRAM area | |
634 | * @return offset given area | |
635 | * | |
636 | * Return BufferRAM offset given area | |
637 | */ | |
638 | static inline int onenand_bufferram_offset(struct mtd_info *mtd, int area) | |
639 | { | |
640 | struct onenand_chip *this = mtd->priv; | |
641 | ||
642 | if (ONENAND_CURRENT_BUFFERRAM(this)) { | |
ee9745fc | 643 | /* Note: the 'this->writesize' is a real page size */ |
cd5f6346 | 644 | if (area == ONENAND_DATARAM) |
ee9745fc | 645 | return this->writesize; |
cd5f6346 KP |
646 | if (area == ONENAND_SPARERAM) |
647 | return mtd->oobsize; | |
648 | } | |
649 | ||
650 | return 0; | |
651 | } | |
652 | ||
653 | /** | |
654 | * onenand_read_bufferram - [OneNAND Interface] Read the bufferram area | |
655 | * @param mtd MTD data structure | |
656 | * @param area BufferRAM area | |
657 | * @param buffer the databuffer to put/get data | |
658 | * @param offset offset to read from or write to | |
659 | * @param count number of bytes to read/write | |
660 | * | |
661 | * Read the BufferRAM area | |
662 | */ | |
663 | static int onenand_read_bufferram(struct mtd_info *mtd, int area, | |
664 | unsigned char *buffer, int offset, size_t count) | |
665 | { | |
666 | struct onenand_chip *this = mtd->priv; | |
667 | void __iomem *bufferram; | |
668 | ||
669 | bufferram = this->base + area; | |
670 | ||
671 | bufferram += onenand_bufferram_offset(mtd, area); | |
672 | ||
9c01f87d KP |
673 | if (ONENAND_CHECK_BYTE_ACCESS(count)) { |
674 | unsigned short word; | |
675 | ||
676 | /* Align with word(16-bit) size */ | |
677 | count--; | |
678 | ||
679 | /* Read word and save byte */ | |
680 | word = this->read_word(bufferram + offset + count); | |
681 | buffer[count] = (word & 0xff); | |
682 | } | |
683 | ||
cd5f6346 KP |
684 | memcpy(buffer, bufferram + offset, count); |
685 | ||
686 | return 0; | |
687 | } | |
688 | ||
52b0eea7 KP |
689 | /** |
690 | * onenand_sync_read_bufferram - [OneNAND Interface] Read the bufferram area with Sync. Burst mode | |
691 | * @param mtd MTD data structure | |
692 | * @param area BufferRAM area | |
693 | * @param buffer the databuffer to put/get data | |
694 | * @param offset offset to read from or write to | |
695 | * @param count number of bytes to read/write | |
696 | * | |
697 | * Read the BufferRAM area with Sync. Burst Mode | |
698 | */ | |
699 | static int onenand_sync_read_bufferram(struct mtd_info *mtd, int area, | |
700 | unsigned char *buffer, int offset, size_t count) | |
701 | { | |
702 | struct onenand_chip *this = mtd->priv; | |
703 | void __iomem *bufferram; | |
704 | ||
705 | bufferram = this->base + area; | |
706 | ||
707 | bufferram += onenand_bufferram_offset(mtd, area); | |
708 | ||
709 | this->mmcontrol(mtd, ONENAND_SYS_CFG1_SYNC_READ); | |
710 | ||
9c01f87d KP |
711 | if (ONENAND_CHECK_BYTE_ACCESS(count)) { |
712 | unsigned short word; | |
713 | ||
714 | /* Align with word(16-bit) size */ | |
715 | count--; | |
716 | ||
717 | /* Read word and save byte */ | |
718 | word = this->read_word(bufferram + offset + count); | |
719 | buffer[count] = (word & 0xff); | |
720 | } | |
721 | ||
52b0eea7 KP |
722 | memcpy(buffer, bufferram + offset, count); |
723 | ||
724 | this->mmcontrol(mtd, 0); | |
725 | ||
726 | return 0; | |
727 | } | |
728 | ||
cd5f6346 KP |
729 | /** |
730 | * onenand_write_bufferram - [OneNAND Interface] Write the bufferram area | |
731 | * @param mtd MTD data structure | |
732 | * @param area BufferRAM area | |
733 | * @param buffer the databuffer to put/get data | |
734 | * @param offset offset to read from or write to | |
735 | * @param count number of bytes to read/write | |
736 | * | |
737 | * Write the BufferRAM area | |
738 | */ | |
739 | static int onenand_write_bufferram(struct mtd_info *mtd, int area, | |
740 | const unsigned char *buffer, int offset, size_t count) | |
741 | { | |
742 | struct onenand_chip *this = mtd->priv; | |
743 | void __iomem *bufferram; | |
744 | ||
745 | bufferram = this->base + area; | |
746 | ||
747 | bufferram += onenand_bufferram_offset(mtd, area); | |
748 | ||
9c01f87d KP |
749 | if (ONENAND_CHECK_BYTE_ACCESS(count)) { |
750 | unsigned short word; | |
751 | int byte_offset; | |
752 | ||
753 | /* Align with word(16-bit) size */ | |
754 | count--; | |
755 | ||
756 | /* Calculate byte access offset */ | |
757 | byte_offset = offset + count; | |
758 | ||
759 | /* Read word and save byte */ | |
760 | word = this->read_word(bufferram + byte_offset); | |
761 | word = (word & ~0xff) | buffer[count]; | |
762 | this->write_word(word, bufferram + byte_offset); | |
763 | } | |
764 | ||
cd5f6346 KP |
765 | memcpy(bufferram + offset, buffer, count); |
766 | ||
767 | return 0; | |
768 | } | |
769 | ||
ee9745fc KP |
770 | /** |
771 | * onenand_get_2x_blockpage - [GENERIC] Get blockpage at 2x program mode | |
772 | * @param mtd MTD data structure | |
773 | * @param addr address to check | |
774 | * @return blockpage address | |
775 | * | |
776 | * Get blockpage address at 2x program mode | |
777 | */ | |
778 | static int onenand_get_2x_blockpage(struct mtd_info *mtd, loff_t addr) | |
779 | { | |
780 | struct onenand_chip *this = mtd->priv; | |
781 | int blockpage, block, page; | |
782 | ||
783 | /* Calculate the even block number */ | |
784 | block = (int) (addr >> this->erase_shift) & ~1; | |
785 | /* Is it the odd plane? */ | |
786 | if (addr & this->writesize) | |
787 | block++; | |
788 | page = (int) (addr >> (this->page_shift + 1)) & this->page_mask; | |
789 | blockpage = (block << 7) | page; | |
790 | ||
791 | return blockpage; | |
792 | } | |
793 | ||
cd5f6346 KP |
794 | /** |
795 | * onenand_check_bufferram - [GENERIC] Check BufferRAM information | |
796 | * @param mtd MTD data structure | |
797 | * @param addr address to check | |
d5c5e78a | 798 | * @return 1 if there are valid data, otherwise 0 |
cd5f6346 KP |
799 | * |
800 | * Check bufferram if there is data we required | |
801 | */ | |
802 | static int onenand_check_bufferram(struct mtd_info *mtd, loff_t addr) | |
803 | { | |
804 | struct onenand_chip *this = mtd->priv; | |
cde36b37 | 805 | int blockpage, found = 0; |
abf3c0f2 | 806 | unsigned int i; |
d5c5e78a | 807 | |
ee9745fc KP |
808 | if (ONENAND_IS_2PLANE(this)) |
809 | blockpage = onenand_get_2x_blockpage(mtd, addr); | |
810 | else | |
811 | blockpage = (int) (addr >> this->page_shift); | |
cd5f6346 | 812 | |
abf3c0f2 | 813 | /* Is there valid data? */ |
cd5f6346 | 814 | i = ONENAND_CURRENT_BUFFERRAM(this); |
abf3c0f2 | 815 | if (this->bufferram[i].blockpage == blockpage) |
cde36b37 AH |
816 | found = 1; |
817 | else { | |
818 | /* Check another BufferRAM */ | |
819 | i = ONENAND_NEXT_BUFFERRAM(this); | |
820 | if (this->bufferram[i].blockpage == blockpage) { | |
821 | ONENAND_SET_NEXT_BUFFERRAM(this); | |
822 | found = 1; | |
823 | } | |
824 | } | |
cd5f6346 | 825 | |
cde36b37 AH |
826 | if (found && ONENAND_IS_DDP(this)) { |
827 | /* Select DataRAM for DDP */ | |
5988af23 | 828 | int block = onenand_block(this, addr); |
cde36b37 AH |
829 | int value = onenand_bufferram_address(this, block); |
830 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); | |
abf3c0f2 | 831 | } |
cd5f6346 | 832 | |
cde36b37 | 833 | return found; |
cd5f6346 KP |
834 | } |
835 | ||
836 | /** | |
837 | * onenand_update_bufferram - [GENERIC] Update BufferRAM information | |
838 | * @param mtd MTD data structure | |
839 | * @param addr address to update | |
840 | * @param valid valid flag | |
841 | * | |
842 | * Update BufferRAM information | |
843 | */ | |
abf3c0f2 | 844 | static void onenand_update_bufferram(struct mtd_info *mtd, loff_t addr, |
cd5f6346 KP |
845 | int valid) |
846 | { | |
847 | struct onenand_chip *this = mtd->priv; | |
abf3c0f2 KP |
848 | int blockpage; |
849 | unsigned int i; | |
d5c5e78a | 850 | |
ee9745fc KP |
851 | if (ONENAND_IS_2PLANE(this)) |
852 | blockpage = onenand_get_2x_blockpage(mtd, addr); | |
853 | else | |
854 | blockpage = (int) (addr >> this->page_shift); | |
cd5f6346 | 855 | |
abf3c0f2 KP |
856 | /* Invalidate another BufferRAM */ |
857 | i = ONENAND_NEXT_BUFFERRAM(this); | |
5b4246f1 | 858 | if (this->bufferram[i].blockpage == blockpage) |
abf3c0f2 | 859 | this->bufferram[i].blockpage = -1; |
cd5f6346 KP |
860 | |
861 | /* Update BufferRAM */ | |
862 | i = ONENAND_CURRENT_BUFFERRAM(this); | |
abf3c0f2 KP |
863 | if (valid) |
864 | this->bufferram[i].blockpage = blockpage; | |
865 | else | |
866 | this->bufferram[i].blockpage = -1; | |
cd5f6346 KP |
867 | } |
868 | ||
480b9dfb AH |
869 | /** |
870 | * onenand_invalidate_bufferram - [GENERIC] Invalidate BufferRAM information | |
871 | * @param mtd MTD data structure | |
872 | * @param addr start address to invalidate | |
873 | * @param len length to invalidate | |
874 | * | |
875 | * Invalidate BufferRAM information | |
876 | */ | |
877 | static void onenand_invalidate_bufferram(struct mtd_info *mtd, loff_t addr, | |
878 | unsigned int len) | |
879 | { | |
880 | struct onenand_chip *this = mtd->priv; | |
881 | int i; | |
882 | loff_t end_addr = addr + len; | |
883 | ||
884 | /* Invalidate BufferRAM */ | |
885 | for (i = 0; i < MAX_BUFFERRAM; i++) { | |
886 | loff_t buf_addr = this->bufferram[i].blockpage << this->page_shift; | |
887 | if (buf_addr >= addr && buf_addr < end_addr) | |
888 | this->bufferram[i].blockpage = -1; | |
889 | } | |
890 | } | |
891 | ||
cd5f6346 KP |
892 | /** |
893 | * onenand_get_device - [GENERIC] Get chip for selected access | |
894 | * @param mtd MTD device structure | |
895 | * @param new_state the state which is requested | |
896 | * | |
897 | * Get the device and lock it for exclusive access | |
898 | */ | |
a41371eb | 899 | static int onenand_get_device(struct mtd_info *mtd, int new_state) |
cd5f6346 KP |
900 | { |
901 | struct onenand_chip *this = mtd->priv; | |
902 | DECLARE_WAITQUEUE(wait, current); | |
903 | ||
904 | /* | |
905 | * Grab the lock and see if the device is available | |
906 | */ | |
907 | while (1) { | |
908 | spin_lock(&this->chip_lock); | |
909 | if (this->state == FL_READY) { | |
910 | this->state = new_state; | |
911 | spin_unlock(&this->chip_lock); | |
912 | break; | |
913 | } | |
a41371eb KP |
914 | if (new_state == FL_PM_SUSPENDED) { |
915 | spin_unlock(&this->chip_lock); | |
916 | return (this->state == FL_PM_SUSPENDED) ? 0 : -EAGAIN; | |
917 | } | |
cd5f6346 KP |
918 | set_current_state(TASK_UNINTERRUPTIBLE); |
919 | add_wait_queue(&this->wq, &wait); | |
920 | spin_unlock(&this->chip_lock); | |
921 | schedule(); | |
922 | remove_wait_queue(&this->wq, &wait); | |
923 | } | |
a41371eb KP |
924 | |
925 | return 0; | |
cd5f6346 KP |
926 | } |
927 | ||
928 | /** | |
929 | * onenand_release_device - [GENERIC] release chip | |
930 | * @param mtd MTD device structure | |
931 | * | |
932 | * Deselect, release chip lock and wake up anyone waiting on the device | |
933 | */ | |
934 | static void onenand_release_device(struct mtd_info *mtd) | |
935 | { | |
936 | struct onenand_chip *this = mtd->priv; | |
937 | ||
938 | /* Release the chip */ | |
939 | spin_lock(&this->chip_lock); | |
940 | this->state = FL_READY; | |
941 | wake_up(&this->wq); | |
942 | spin_unlock(&this->chip_lock); | |
943 | } | |
944 | ||
945 | /** | |
d15057b7 KP |
946 | * onenand_transfer_auto_oob - [Internal] oob auto-placement transfer |
947 | * @param mtd MTD device structure | |
948 | * @param buf destination address | |
949 | * @param column oob offset to read from | |
950 | * @param thislen oob length to read | |
951 | */ | |
952 | static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int column, | |
953 | int thislen) | |
954 | { | |
955 | struct onenand_chip *this = mtd->priv; | |
956 | struct nand_oobfree *free; | |
957 | int readcol = column; | |
958 | int readend = column + thislen; | |
959 | int lastgap = 0; | |
960 | unsigned int i; | |
961 | uint8_t *oob_buf = this->oob_buf; | |
962 | ||
963 | free = this->ecclayout->oobfree; | |
964 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { | |
965 | if (readcol >= lastgap) | |
966 | readcol += free->offset - lastgap; | |
967 | if (readend >= lastgap) | |
968 | readend += free->offset - lastgap; | |
969 | lastgap = free->offset + free->length; | |
970 | } | |
971 | this->read_bufferram(mtd, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize); | |
972 | free = this->ecclayout->oobfree; | |
973 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { | |
974 | int free_end = free->offset + free->length; | |
975 | if (free->offset < readend && free_end > readcol) { | |
976 | int st = max_t(int,free->offset,readcol); | |
977 | int ed = min_t(int,free_end,readend); | |
978 | int n = ed - st; | |
979 | memcpy(buf, oob_buf + st, n); | |
980 | buf += n; | |
981 | } else if (column == 0) | |
982 | break; | |
983 | } | |
984 | return 0; | |
985 | } | |
986 | ||
5988af23 RH |
987 | /** |
988 | * onenand_recover_lsb - [Flex-OneNAND] Recover LSB page data | |
989 | * @param mtd MTD device structure | |
990 | * @param addr address to recover | |
991 | * @param status return value from onenand_wait / onenand_bbt_wait | |
992 | * | |
993 | * MLC NAND Flash cell has paired pages - LSB page and MSB page. LSB page has | |
994 | * lower page address and MSB page has higher page address in paired pages. | |
995 | * If power off occurs during MSB page program, the paired LSB page data can | |
996 | * become corrupt. LSB page recovery read is a way to read LSB page though page | |
997 | * data are corrupted. When uncorrectable error occurs as a result of LSB page | |
998 | * read after power up, issue LSB page recovery read. | |
999 | */ | |
1000 | static int onenand_recover_lsb(struct mtd_info *mtd, loff_t addr, int status) | |
1001 | { | |
1002 | struct onenand_chip *this = mtd->priv; | |
1003 | int i; | |
1004 | ||
1005 | /* Recovery is only for Flex-OneNAND */ | |
1006 | if (!FLEXONENAND(this)) | |
1007 | return status; | |
1008 | ||
1009 | /* check if we failed due to uncorrectable error */ | |
1010 | if (status != -EBADMSG && status != ONENAND_BBT_READ_ECC_ERROR) | |
1011 | return status; | |
1012 | ||
1013 | /* check if address lies in MLC region */ | |
1014 | i = flexonenand_region(mtd, addr); | |
1015 | if (mtd->eraseregions[i].erasesize < (1 << this->erase_shift)) | |
1016 | return status; | |
1017 | ||
1018 | /* We are attempting to reread, so decrement stats.failed | |
1019 | * which was incremented by onenand_wait due to read failure | |
1020 | */ | |
297758f8 AKS |
1021 | printk(KERN_INFO "%s: Attempting to recover from uncorrectable read\n", |
1022 | __func__); | |
5988af23 RH |
1023 | mtd->ecc_stats.failed--; |
1024 | ||
1025 | /* Issue the LSB page recovery command */ | |
1026 | this->command(mtd, FLEXONENAND_CMD_RECOVER_LSB, addr, this->writesize); | |
1027 | return this->wait(mtd, FL_READING); | |
1028 | } | |
1029 | ||
1030 | /** | |
1031 | * onenand_mlc_read_ops_nolock - MLC OneNAND read main and/or out-of-band | |
1032 | * @param mtd MTD device structure | |
1033 | * @param from offset to read from | |
1034 | * @param ops: oob operation description structure | |
1035 | * | |
1036 | * MLC OneNAND / Flex-OneNAND has 4KB page size and 4KB dataram. | |
1037 | * So, read-while-load is not present. | |
1038 | */ | |
1039 | static int onenand_mlc_read_ops_nolock(struct mtd_info *mtd, loff_t from, | |
1040 | struct mtd_oob_ops *ops) | |
1041 | { | |
1042 | struct onenand_chip *this = mtd->priv; | |
1043 | struct mtd_ecc_stats stats; | |
1044 | size_t len = ops->len; | |
1045 | size_t ooblen = ops->ooblen; | |
1046 | u_char *buf = ops->datbuf; | |
1047 | u_char *oobbuf = ops->oobbuf; | |
1048 | int read = 0, column, thislen; | |
1049 | int oobread = 0, oobcolumn, thisooblen, oobsize; | |
1050 | int ret = 0; | |
1051 | int writesize = this->writesize; | |
1052 | ||
297758f8 AKS |
1053 | DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %i\n", |
1054 | (unsigned int) from, (int) len); | |
5988af23 RH |
1055 | |
1056 | if (ops->mode == MTD_OOB_AUTO) | |
1057 | oobsize = this->ecclayout->oobavail; | |
1058 | else | |
1059 | oobsize = mtd->oobsize; | |
1060 | ||
1061 | oobcolumn = from & (mtd->oobsize - 1); | |
1062 | ||
1063 | /* Do not allow reads past end of device */ | |
1064 | if (from + len > mtd->size) { | |
297758f8 AKS |
1065 | printk(KERN_ERR "%s: Attempt read beyond end of device\n", |
1066 | __func__); | |
5988af23 RH |
1067 | ops->retlen = 0; |
1068 | ops->oobretlen = 0; | |
1069 | return -EINVAL; | |
1070 | } | |
1071 | ||
1072 | stats = mtd->ecc_stats; | |
1073 | ||
1074 | while (read < len) { | |
1075 | cond_resched(); | |
1076 | ||
1077 | thislen = min_t(int, writesize, len - read); | |
1078 | ||
1079 | column = from & (writesize - 1); | |
1080 | if (column + thislen > writesize) | |
1081 | thislen = writesize - column; | |
1082 | ||
1083 | if (!onenand_check_bufferram(mtd, from)) { | |
1084 | this->command(mtd, ONENAND_CMD_READ, from, writesize); | |
1085 | ||
1086 | ret = this->wait(mtd, FL_READING); | |
1087 | if (unlikely(ret)) | |
1088 | ret = onenand_recover_lsb(mtd, from, ret); | |
1089 | onenand_update_bufferram(mtd, from, !ret); | |
1090 | if (ret == -EBADMSG) | |
1091 | ret = 0; | |
1092 | } | |
1093 | ||
1094 | this->read_bufferram(mtd, ONENAND_DATARAM, buf, column, thislen); | |
1095 | if (oobbuf) { | |
1096 | thisooblen = oobsize - oobcolumn; | |
1097 | thisooblen = min_t(int, thisooblen, ooblen - oobread); | |
1098 | ||
1099 | if (ops->mode == MTD_OOB_AUTO) | |
1100 | onenand_transfer_auto_oob(mtd, oobbuf, oobcolumn, thisooblen); | |
1101 | else | |
1102 | this->read_bufferram(mtd, ONENAND_SPARERAM, oobbuf, oobcolumn, thisooblen); | |
1103 | oobread += thisooblen; | |
1104 | oobbuf += thisooblen; | |
1105 | oobcolumn = 0; | |
1106 | } | |
1107 | ||
1108 | read += thislen; | |
1109 | if (read == len) | |
1110 | break; | |
1111 | ||
1112 | from += thislen; | |
1113 | buf += thislen; | |
1114 | } | |
1115 | ||
1116 | /* | |
1117 | * Return success, if no ECC failures, else -EBADMSG | |
1118 | * fs driver will take care of that, because | |
1119 | * retlen == desired len and result == -EBADMSG | |
1120 | */ | |
1121 | ops->retlen = read; | |
1122 | ops->oobretlen = oobread; | |
1123 | ||
1124 | if (ret) | |
1125 | return ret; | |
1126 | ||
1127 | if (mtd->ecc_stats.failed - stats.failed) | |
1128 | return -EBADMSG; | |
1129 | ||
1130 | return mtd->ecc_stats.corrected - stats.corrected ? -EUCLEAN : 0; | |
1131 | } | |
1132 | ||
d15057b7 | 1133 | /** |
49dc08ee | 1134 | * onenand_read_ops_nolock - [OneNAND Interface] OneNAND read main and/or out-of-band |
cd5f6346 KP |
1135 | * @param mtd MTD device structure |
1136 | * @param from offset to read from | |
d15057b7 | 1137 | * @param ops: oob operation description structure |
cd5f6346 | 1138 | * |
d15057b7 KP |
1139 | * OneNAND read main and/or out-of-band data |
1140 | */ | |
49dc08ee | 1141 | static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, |
d15057b7 | 1142 | struct mtd_oob_ops *ops) |
cd5f6346 KP |
1143 | { |
1144 | struct onenand_chip *this = mtd->priv; | |
f4f91ac3 | 1145 | struct mtd_ecc_stats stats; |
d15057b7 KP |
1146 | size_t len = ops->len; |
1147 | size_t ooblen = ops->ooblen; | |
1148 | u_char *buf = ops->datbuf; | |
1149 | u_char *oobbuf = ops->oobbuf; | |
1150 | int read = 0, column, thislen; | |
1151 | int oobread = 0, oobcolumn, thisooblen, oobsize; | |
0fc2ccea | 1152 | int ret = 0, boundary = 0; |
ee9745fc | 1153 | int writesize = this->writesize; |
cd5f6346 | 1154 | |
297758f8 AKS |
1155 | DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %i\n", |
1156 | __func__, (unsigned int) from, (int) len); | |
d15057b7 KP |
1157 | |
1158 | if (ops->mode == MTD_OOB_AUTO) | |
1159 | oobsize = this->ecclayout->oobavail; | |
1160 | else | |
1161 | oobsize = mtd->oobsize; | |
1162 | ||
1163 | oobcolumn = from & (mtd->oobsize - 1); | |
cd5f6346 KP |
1164 | |
1165 | /* Do not allow reads past end of device */ | |
1166 | if ((from + len) > mtd->size) { | |
297758f8 AKS |
1167 | printk(KERN_ERR "%s: Attempt read beyond end of device\n", |
1168 | __func__); | |
d15057b7 KP |
1169 | ops->retlen = 0; |
1170 | ops->oobretlen = 0; | |
cd5f6346 KP |
1171 | return -EINVAL; |
1172 | } | |
1173 | ||
f4f91ac3 | 1174 | stats = mtd->ecc_stats; |
61a7e198 | 1175 | |
a8de85d5 AH |
1176 | /* Read-while-load method */ |
1177 | ||
1178 | /* Do first load to bufferRAM */ | |
1179 | if (read < len) { | |
1180 | if (!onenand_check_bufferram(mtd, from)) { | |
ee9745fc | 1181 | this->command(mtd, ONENAND_CMD_READ, from, writesize); |
a8de85d5 AH |
1182 | ret = this->wait(mtd, FL_READING); |
1183 | onenand_update_bufferram(mtd, from, !ret); | |
5f4d47d5 AH |
1184 | if (ret == -EBADMSG) |
1185 | ret = 0; | |
a8de85d5 AH |
1186 | } |
1187 | } | |
1188 | ||
ee9745fc KP |
1189 | thislen = min_t(int, writesize, len - read); |
1190 | column = from & (writesize - 1); | |
1191 | if (column + thislen > writesize) | |
1192 | thislen = writesize - column; | |
a8de85d5 AH |
1193 | |
1194 | while (!ret) { | |
1195 | /* If there is more to load then start next load */ | |
1196 | from += thislen; | |
1197 | if (read + thislen < len) { | |
ee9745fc | 1198 | this->command(mtd, ONENAND_CMD_READ, from, writesize); |
0fc2ccea AH |
1199 | /* |
1200 | * Chip boundary handling in DDP | |
1201 | * Now we issued chip 1 read and pointed chip 1 | |
492e1501 | 1202 | * bufferram so we have to point chip 0 bufferram. |
0fc2ccea | 1203 | */ |
738d61f5 KP |
1204 | if (ONENAND_IS_DDP(this) && |
1205 | unlikely(from == (this->chipsize >> 1))) { | |
1206 | this->write_word(ONENAND_DDP_CHIP0, this->base + ONENAND_REG_START_ADDRESS2); | |
0fc2ccea AH |
1207 | boundary = 1; |
1208 | } else | |
1209 | boundary = 0; | |
a8de85d5 AH |
1210 | ONENAND_SET_PREV_BUFFERRAM(this); |
1211 | } | |
1212 | /* While load is going, read from last bufferRAM */ | |
1213 | this->read_bufferram(mtd, ONENAND_DATARAM, buf, column, thislen); | |
d15057b7 KP |
1214 | |
1215 | /* Read oob area if needed */ | |
1216 | if (oobbuf) { | |
1217 | thisooblen = oobsize - oobcolumn; | |
1218 | thisooblen = min_t(int, thisooblen, ooblen - oobread); | |
1219 | ||
1220 | if (ops->mode == MTD_OOB_AUTO) | |
1221 | onenand_transfer_auto_oob(mtd, oobbuf, oobcolumn, thisooblen); | |
1222 | else | |
1223 | this->read_bufferram(mtd, ONENAND_SPARERAM, oobbuf, oobcolumn, thisooblen); | |
1224 | oobread += thisooblen; | |
1225 | oobbuf += thisooblen; | |
1226 | oobcolumn = 0; | |
1227 | } | |
1228 | ||
a8de85d5 AH |
1229 | /* See if we are done */ |
1230 | read += thislen; | |
1231 | if (read == len) | |
1232 | break; | |
1233 | /* Set up for next read from bufferRAM */ | |
0fc2ccea | 1234 | if (unlikely(boundary)) |
738d61f5 | 1235 | this->write_word(ONENAND_DDP_CHIP1, this->base + ONENAND_REG_START_ADDRESS2); |
a8de85d5 AH |
1236 | ONENAND_SET_NEXT_BUFFERRAM(this); |
1237 | buf += thislen; | |
ee9745fc | 1238 | thislen = min_t(int, writesize, len - read); |
a8de85d5 AH |
1239 | column = 0; |
1240 | cond_resched(); | |
1241 | /* Now wait for load */ | |
1242 | ret = this->wait(mtd, FL_READING); | |
1243 | onenand_update_bufferram(mtd, from, !ret); | |
5f4d47d5 AH |
1244 | if (ret == -EBADMSG) |
1245 | ret = 0; | |
a8de85d5 | 1246 | } |
cd5f6346 | 1247 | |
cd5f6346 KP |
1248 | /* |
1249 | * Return success, if no ECC failures, else -EBADMSG | |
1250 | * fs driver will take care of that, because | |
1251 | * retlen == desired len and result == -EBADMSG | |
1252 | */ | |
d15057b7 KP |
1253 | ops->retlen = read; |
1254 | ops->oobretlen = oobread; | |
f4f91ac3 | 1255 | |
a8de85d5 AH |
1256 | if (ret) |
1257 | return ret; | |
1258 | ||
5f4d47d5 AH |
1259 | if (mtd->ecc_stats.failed - stats.failed) |
1260 | return -EBADMSG; | |
1261 | ||
f4f91ac3 | 1262 | return mtd->ecc_stats.corrected - stats.corrected ? -EUCLEAN : 0; |
cd5f6346 KP |
1263 | } |
1264 | ||
cd5f6346 | 1265 | /** |
49dc08ee | 1266 | * onenand_read_oob_nolock - [MTD Interface] OneNAND read out-of-band |
cd5f6346 KP |
1267 | * @param mtd MTD device structure |
1268 | * @param from offset to read from | |
d15057b7 | 1269 | * @param ops: oob operation description structure |
cd5f6346 KP |
1270 | * |
1271 | * OneNAND read out-of-band data from the spare area | |
1272 | */ | |
49dc08ee | 1273 | static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, |
12f77c9e | 1274 | struct mtd_oob_ops *ops) |
cd5f6346 KP |
1275 | { |
1276 | struct onenand_chip *this = mtd->priv; | |
5f4d47d5 | 1277 | struct mtd_ecc_stats stats; |
a5e7c7b4 | 1278 | int read = 0, thislen, column, oobsize; |
12f77c9e KP |
1279 | size_t len = ops->ooblen; |
1280 | mtd_oob_mode_t mode = ops->mode; | |
1281 | u_char *buf = ops->oobbuf; | |
5988af23 | 1282 | int ret = 0, readcmd; |
cd5f6346 | 1283 | |
12f77c9e KP |
1284 | from += ops->ooboffs; |
1285 | ||
297758f8 AKS |
1286 | DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %i\n", |
1287 | __func__, (unsigned int) from, (int) len); | |
cd5f6346 KP |
1288 | |
1289 | /* Initialize return length value */ | |
12f77c9e | 1290 | ops->oobretlen = 0; |
cd5f6346 | 1291 | |
a5e7c7b4 AH |
1292 | if (mode == MTD_OOB_AUTO) |
1293 | oobsize = this->ecclayout->oobavail; | |
1294 | else | |
1295 | oobsize = mtd->oobsize; | |
1296 | ||
1297 | column = from & (mtd->oobsize - 1); | |
1298 | ||
1299 | if (unlikely(column >= oobsize)) { | |
297758f8 AKS |
1300 | printk(KERN_ERR "%s: Attempted to start read outside oob\n", |
1301 | __func__); | |
a5e7c7b4 AH |
1302 | return -EINVAL; |
1303 | } | |
1304 | ||
cd5f6346 | 1305 | /* Do not allow reads past end of device */ |
a5e7c7b4 AH |
1306 | if (unlikely(from >= mtd->size || |
1307 | column + len > ((mtd->size >> this->page_shift) - | |
1308 | (from >> this->page_shift)) * oobsize)) { | |
297758f8 AKS |
1309 | printk(KERN_ERR "%s: Attempted to read beyond end of device\n", |
1310 | __func__); | |
cd5f6346 KP |
1311 | return -EINVAL; |
1312 | } | |
1313 | ||
5f4d47d5 AH |
1314 | stats = mtd->ecc_stats; |
1315 | ||
5988af23 RH |
1316 | readcmd = ONENAND_IS_MLC(this) ? ONENAND_CMD_READ : ONENAND_CMD_READOOB; |
1317 | ||
cd5f6346 | 1318 | while (read < len) { |
61a7e198 AB |
1319 | cond_resched(); |
1320 | ||
a5e7c7b4 | 1321 | thislen = oobsize - column; |
cd5f6346 KP |
1322 | thislen = min_t(int, thislen, len); |
1323 | ||
5988af23 | 1324 | this->command(mtd, readcmd, from, mtd->oobsize); |
cd5f6346 KP |
1325 | |
1326 | onenand_update_bufferram(mtd, from, 0); | |
1327 | ||
1328 | ret = this->wait(mtd, FL_READING); | |
5988af23 RH |
1329 | if (unlikely(ret)) |
1330 | ret = onenand_recover_lsb(mtd, from, ret); | |
1331 | ||
5f4d47d5 | 1332 | if (ret && ret != -EBADMSG) { |
297758f8 AKS |
1333 | printk(KERN_ERR "%s: read failed = 0x%x\n", |
1334 | __func__, ret); | |
5f4d47d5 AH |
1335 | break; |
1336 | } | |
cd5f6346 | 1337 | |
a5e7c7b4 AH |
1338 | if (mode == MTD_OOB_AUTO) |
1339 | onenand_transfer_auto_oob(mtd, buf, column, thislen); | |
1340 | else | |
1341 | this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen); | |
cd5f6346 KP |
1342 | |
1343 | read += thislen; | |
1344 | ||
1345 | if (read == len) | |
1346 | break; | |
1347 | ||
cd5f6346 KP |
1348 | buf += thislen; |
1349 | ||
1350 | /* Read more? */ | |
1351 | if (read < len) { | |
1352 | /* Page size */ | |
28318776 | 1353 | from += mtd->writesize; |
cd5f6346 KP |
1354 | column = 0; |
1355 | } | |
1356 | } | |
1357 | ||
12f77c9e | 1358 | ops->oobretlen = read; |
5f4d47d5 AH |
1359 | |
1360 | if (ret) | |
1361 | return ret; | |
1362 | ||
1363 | if (mtd->ecc_stats.failed - stats.failed) | |
1364 | return -EBADMSG; | |
1365 | ||
1366 | return 0; | |
cd5f6346 KP |
1367 | } |
1368 | ||
8593fbc6 | 1369 | /** |
d15057b7 KP |
1370 | * onenand_read - [MTD Interface] Read data from flash |
1371 | * @param mtd MTD device structure | |
1372 | * @param from offset to read from | |
1373 | * @param len number of bytes to read | |
1374 | * @param retlen pointer to variable to store the number of read bytes | |
1375 | * @param buf the databuffer to put data | |
1376 | * | |
1377 | * Read with ecc | |
1378 | */ | |
1379 | static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, | |
1380 | size_t *retlen, u_char *buf) | |
1381 | { | |
5988af23 | 1382 | struct onenand_chip *this = mtd->priv; |
d15057b7 KP |
1383 | struct mtd_oob_ops ops = { |
1384 | .len = len, | |
1385 | .ooblen = 0, | |
1386 | .datbuf = buf, | |
1387 | .oobbuf = NULL, | |
1388 | }; | |
1389 | int ret; | |
1390 | ||
49dc08ee | 1391 | onenand_get_device(mtd, FL_READING); |
5988af23 RH |
1392 | ret = ONENAND_IS_MLC(this) ? |
1393 | onenand_mlc_read_ops_nolock(mtd, from, &ops) : | |
1394 | onenand_read_ops_nolock(mtd, from, &ops); | |
49dc08ee | 1395 | onenand_release_device(mtd); |
d15057b7 | 1396 | |
49dc08ee | 1397 | *retlen = ops.retlen; |
d15057b7 KP |
1398 | return ret; |
1399 | } | |
1400 | ||
1401 | /** | |
1402 | * onenand_read_oob - [MTD Interface] Read main and/or out-of-band | |
e3da8067 KP |
1403 | * @param mtd: MTD device structure |
1404 | * @param from: offset to read from | |
1405 | * @param ops: oob operation description structure | |
d15057b7 KP |
1406 | |
1407 | * Read main and/or out-of-band | |
8593fbc6 TG |
1408 | */ |
1409 | static int onenand_read_oob(struct mtd_info *mtd, loff_t from, | |
1410 | struct mtd_oob_ops *ops) | |
1411 | { | |
5988af23 | 1412 | struct onenand_chip *this = mtd->priv; |
49dc08ee AB |
1413 | int ret; |
1414 | ||
4f4fad27 | 1415 | switch (ops->mode) { |
a5e7c7b4 AH |
1416 | case MTD_OOB_PLACE: |
1417 | case MTD_OOB_AUTO: | |
1418 | break; | |
1419 | case MTD_OOB_RAW: | |
4f4fad27 | 1420 | /* Not implemented yet */ |
a5e7c7b4 AH |
1421 | default: |
1422 | return -EINVAL; | |
1423 | } | |
d15057b7 | 1424 | |
49dc08ee | 1425 | onenand_get_device(mtd, FL_READING); |
d15057b7 | 1426 | if (ops->datbuf) |
5988af23 RH |
1427 | ret = ONENAND_IS_MLC(this) ? |
1428 | onenand_mlc_read_ops_nolock(mtd, from, ops) : | |
1429 | onenand_read_ops_nolock(mtd, from, ops); | |
49dc08ee AB |
1430 | else |
1431 | ret = onenand_read_oob_nolock(mtd, from, ops); | |
1432 | onenand_release_device(mtd); | |
d15057b7 | 1433 | |
49dc08ee | 1434 | return ret; |
8593fbc6 TG |
1435 | } |
1436 | ||
211ac75f KP |
1437 | /** |
1438 | * onenand_bbt_wait - [DEFAULT] wait until the command is done | |
1439 | * @param mtd MTD device structure | |
1440 | * @param state state to select the max. timeout value | |
1441 | * | |
1442 | * Wait for command done. | |
1443 | */ | |
1444 | static int onenand_bbt_wait(struct mtd_info *mtd, int state) | |
1445 | { | |
1446 | struct onenand_chip *this = mtd->priv; | |
1447 | unsigned long timeout; | |
1448 | unsigned int interrupt; | |
1449 | unsigned int ctrl; | |
1450 | ||
1451 | /* The 20 msec is enough */ | |
1452 | timeout = jiffies + msecs_to_jiffies(20); | |
1453 | while (time_before(jiffies, timeout)) { | |
1454 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); | |
1455 | if (interrupt & ONENAND_INT_MASTER) | |
1456 | break; | |
1457 | } | |
1458 | /* To get correct interrupt status in timeout case */ | |
1459 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); | |
1460 | ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS); | |
1461 | ||
211ac75f | 1462 | if (interrupt & ONENAND_INT_READ) { |
5988af23 | 1463 | int ecc = onenand_read_ecc(this); |
83973b87 | 1464 | if (ecc & ONENAND_ECC_2BIT_ALL) { |
297758f8 AKS |
1465 | printk(KERN_WARNING "%s: ecc error = 0x%04x, " |
1466 | "controller error 0x%04x\n", | |
1467 | __func__, ecc, ctrl); | |
5988af23 | 1468 | return ONENAND_BBT_READ_ECC_ERROR; |
83973b87 | 1469 | } |
211ac75f | 1470 | } else { |
297758f8 AKS |
1471 | printk(KERN_ERR "%s: read timeout! ctrl=0x%04x intr=0x%04x\n", |
1472 | __func__, ctrl, interrupt); | |
211ac75f KP |
1473 | return ONENAND_BBT_READ_FATAL_ERROR; |
1474 | } | |
1475 | ||
83973b87 KP |
1476 | /* Initial bad block case: 0x2400 or 0x0400 */ |
1477 | if (ctrl & ONENAND_CTRL_ERROR) { | |
297758f8 AKS |
1478 | printk(KERN_DEBUG "%s: controller error = 0x%04x\n", |
1479 | __func__, ctrl); | |
83973b87 KP |
1480 | return ONENAND_BBT_READ_ERROR; |
1481 | } | |
1482 | ||
211ac75f KP |
1483 | return 0; |
1484 | } | |
1485 | ||
1486 | /** | |
1487 | * onenand_bbt_read_oob - [MTD Interface] OneNAND read out-of-band for bbt scan | |
1488 | * @param mtd MTD device structure | |
1489 | * @param from offset to read from | |
e3da8067 | 1490 | * @param ops oob operation description structure |
211ac75f KP |
1491 | * |
1492 | * OneNAND read out-of-band data from the spare area for bbt scan | |
1493 | */ | |
1494 | int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from, | |
1495 | struct mtd_oob_ops *ops) | |
1496 | { | |
1497 | struct onenand_chip *this = mtd->priv; | |
1498 | int read = 0, thislen, column; | |
5988af23 | 1499 | int ret = 0, readcmd; |
211ac75f KP |
1500 | size_t len = ops->ooblen; |
1501 | u_char *buf = ops->oobbuf; | |
1502 | ||
297758f8 AKS |
1503 | DEBUG(MTD_DEBUG_LEVEL3, "%s: from = 0x%08x, len = %zi\n", |
1504 | __func__, (unsigned int) from, len); | |
211ac75f KP |
1505 | |
1506 | /* Initialize return value */ | |
1507 | ops->oobretlen = 0; | |
1508 | ||
1509 | /* Do not allow reads past end of device */ | |
1510 | if (unlikely((from + len) > mtd->size)) { | |
297758f8 AKS |
1511 | printk(KERN_ERR "%s: Attempt read beyond end of device\n", |
1512 | __func__); | |
211ac75f KP |
1513 | return ONENAND_BBT_READ_FATAL_ERROR; |
1514 | } | |
1515 | ||
1516 | /* Grab the lock and see if the device is available */ | |
1517 | onenand_get_device(mtd, FL_READING); | |
1518 | ||
1519 | column = from & (mtd->oobsize - 1); | |
1520 | ||
5988af23 RH |
1521 | readcmd = ONENAND_IS_MLC(this) ? ONENAND_CMD_READ : ONENAND_CMD_READOOB; |
1522 | ||
211ac75f KP |
1523 | while (read < len) { |
1524 | cond_resched(); | |
1525 | ||
1526 | thislen = mtd->oobsize - column; | |
1527 | thislen = min_t(int, thislen, len); | |
1528 | ||
5988af23 | 1529 | this->command(mtd, readcmd, from, mtd->oobsize); |
211ac75f KP |
1530 | |
1531 | onenand_update_bufferram(mtd, from, 0); | |
1532 | ||
31bb999e | 1533 | ret = this->bbt_wait(mtd, FL_READING); |
5988af23 RH |
1534 | if (unlikely(ret)) |
1535 | ret = onenand_recover_lsb(mtd, from, ret); | |
1536 | ||
211ac75f KP |
1537 | if (ret) |
1538 | break; | |
1539 | ||
1540 | this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen); | |
1541 | read += thislen; | |
1542 | if (read == len) | |
1543 | break; | |
1544 | ||
1545 | buf += thislen; | |
1546 | ||
1547 | /* Read more? */ | |
1548 | if (read < len) { | |
1549 | /* Update Page size */ | |
ee9745fc | 1550 | from += this->writesize; |
211ac75f KP |
1551 | column = 0; |
1552 | } | |
1553 | } | |
1554 | ||
1555 | /* Deselect and wake up anyone waiting on the device */ | |
1556 | onenand_release_device(mtd); | |
1557 | ||
1558 | ops->oobretlen = read; | |
1559 | return ret; | |
1560 | } | |
1561 | ||
cd5f6346 | 1562 | #ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE |
8e6ec690 KP |
1563 | /** |
1564 | * onenand_verify_oob - [GENERIC] verify the oob contents after a write | |
1565 | * @param mtd MTD device structure | |
1566 | * @param buf the databuffer to verify | |
1567 | * @param to offset to read from | |
8e6ec690 | 1568 | */ |
a5e7c7b4 | 1569 | static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to) |
8e6ec690 KP |
1570 | { |
1571 | struct onenand_chip *this = mtd->priv; | |
69d79186 | 1572 | u_char *oob_buf = this->oob_buf; |
5988af23 RH |
1573 | int status, i, readcmd; |
1574 | ||
1575 | readcmd = ONENAND_IS_MLC(this) ? ONENAND_CMD_READ : ONENAND_CMD_READOOB; | |
8e6ec690 | 1576 | |
5988af23 | 1577 | this->command(mtd, readcmd, to, mtd->oobsize); |
8e6ec690 KP |
1578 | onenand_update_bufferram(mtd, to, 0); |
1579 | status = this->wait(mtd, FL_READING); | |
1580 | if (status) | |
1581 | return status; | |
1582 | ||
69d79186 | 1583 | this->read_bufferram(mtd, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize); |
91014e9b | 1584 | for (i = 0; i < mtd->oobsize; i++) |
69d79186 | 1585 | if (buf[i] != 0xFF && buf[i] != oob_buf[i]) |
8e6ec690 KP |
1586 | return -EBADMSG; |
1587 | ||
1588 | return 0; | |
1589 | } | |
1590 | ||
cd5f6346 | 1591 | /** |
8b29c0b6 AH |
1592 | * onenand_verify - [GENERIC] verify the chip contents after a write |
1593 | * @param mtd MTD device structure | |
1594 | * @param buf the databuffer to verify | |
1595 | * @param addr offset to read from | |
1596 | * @param len number of bytes to read and compare | |
cd5f6346 | 1597 | */ |
8b29c0b6 | 1598 | static int onenand_verify(struct mtd_info *mtd, const u_char *buf, loff_t addr, size_t len) |
cd5f6346 KP |
1599 | { |
1600 | struct onenand_chip *this = mtd->priv; | |
8b29c0b6 | 1601 | void __iomem *dataram; |
cd5f6346 | 1602 | int ret = 0; |
8b29c0b6 | 1603 | int thislen, column; |
cd5f6346 | 1604 | |
8b29c0b6 | 1605 | while (len != 0) { |
ee9745fc KP |
1606 | thislen = min_t(int, this->writesize, len); |
1607 | column = addr & (this->writesize - 1); | |
1608 | if (column + thislen > this->writesize) | |
1609 | thislen = this->writesize - column; | |
60d84f97 | 1610 | |
ee9745fc | 1611 | this->command(mtd, ONENAND_CMD_READ, addr, this->writesize); |
cd5f6346 | 1612 | |
8b29c0b6 AH |
1613 | onenand_update_bufferram(mtd, addr, 0); |
1614 | ||
1615 | ret = this->wait(mtd, FL_READING); | |
1616 | if (ret) | |
1617 | return ret; | |
cd5f6346 | 1618 | |
8b29c0b6 | 1619 | onenand_update_bufferram(mtd, addr, 1); |
cd5f6346 | 1620 | |
8b29c0b6 AH |
1621 | dataram = this->base + ONENAND_DATARAM; |
1622 | dataram += onenand_bufferram_offset(mtd, ONENAND_DATARAM); | |
cd5f6346 | 1623 | |
8b29c0b6 AH |
1624 | if (memcmp(buf, dataram + column, thislen)) |
1625 | return -EBADMSG; | |
1626 | ||
1627 | len -= thislen; | |
1628 | buf += thislen; | |
1629 | addr += thislen; | |
1630 | } | |
d5c5e78a | 1631 | |
cd5f6346 KP |
1632 | return 0; |
1633 | } | |
1634 | #else | |
8b29c0b6 | 1635 | #define onenand_verify(...) (0) |
8e6ec690 | 1636 | #define onenand_verify_oob(...) (0) |
cd5f6346 KP |
1637 | #endif |
1638 | ||
60d84f97 | 1639 | #define NOTALIGNED(x) ((x & (this->subpagesize - 1)) != 0) |
cd5f6346 | 1640 | |
6c77fd64 RP |
1641 | static void onenand_panic_wait(struct mtd_info *mtd) |
1642 | { | |
1643 | struct onenand_chip *this = mtd->priv; | |
1644 | unsigned int interrupt; | |
1645 | int i; | |
1646 | ||
1647 | for (i = 0; i < 2000; i++) { | |
1648 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); | |
1649 | if (interrupt & ONENAND_INT_MASTER) | |
1650 | break; | |
1651 | udelay(10); | |
1652 | } | |
1653 | } | |
1654 | ||
1655 | /** | |
1656 | * onenand_panic_write - [MTD Interface] write buffer to FLASH in a panic context | |
1657 | * @param mtd MTD device structure | |
1658 | * @param to offset to write to | |
1659 | * @param len number of bytes to write | |
1660 | * @param retlen pointer to variable to store the number of written bytes | |
1661 | * @param buf the data to write | |
1662 | * | |
1663 | * Write with ECC | |
1664 | */ | |
1665 | static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len, | |
1666 | size_t *retlen, const u_char *buf) | |
1667 | { | |
1668 | struct onenand_chip *this = mtd->priv; | |
1669 | int column, subpage; | |
1670 | int written = 0; | |
1671 | int ret = 0; | |
1672 | ||
1673 | if (this->state == FL_PM_SUSPENDED) | |
1674 | return -EBUSY; | |
1675 | ||
1676 | /* Wait for any existing operation to clear */ | |
1677 | onenand_panic_wait(mtd); | |
1678 | ||
297758f8 AKS |
1679 | DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n", |
1680 | __func__, (unsigned int) to, (int) len); | |
6c77fd64 RP |
1681 | |
1682 | /* Initialize retlen, in case of early exit */ | |
1683 | *retlen = 0; | |
1684 | ||
1685 | /* Do not allow writes past end of device */ | |
1686 | if (unlikely((to + len) > mtd->size)) { | |
297758f8 AKS |
1687 | printk(KERN_ERR "%s: Attempt write to past end of device\n", |
1688 | __func__); | |
6c77fd64 RP |
1689 | return -EINVAL; |
1690 | } | |
1691 | ||
1692 | /* Reject writes, which are not page aligned */ | |
b73d7e43 | 1693 | if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) { |
297758f8 AKS |
1694 | printk(KERN_ERR "%s: Attempt to write not page aligned data\n", |
1695 | __func__); | |
6c77fd64 RP |
1696 | return -EINVAL; |
1697 | } | |
1698 | ||
1699 | column = to & (mtd->writesize - 1); | |
1700 | ||
1701 | /* Loop until all data write */ | |
1702 | while (written < len) { | |
1703 | int thislen = min_t(int, mtd->writesize - column, len - written); | |
1704 | u_char *wbuf = (u_char *) buf; | |
1705 | ||
1706 | this->command(mtd, ONENAND_CMD_BUFFERRAM, to, thislen); | |
1707 | ||
1708 | /* Partial page write */ | |
1709 | subpage = thislen < mtd->writesize; | |
1710 | if (subpage) { | |
1711 | memset(this->page_buf, 0xff, mtd->writesize); | |
1712 | memcpy(this->page_buf + column, buf, thislen); | |
1713 | wbuf = this->page_buf; | |
1714 | } | |
1715 | ||
1716 | this->write_bufferram(mtd, ONENAND_DATARAM, wbuf, 0, mtd->writesize); | |
1717 | this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize); | |
1718 | ||
1719 | this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize); | |
1720 | ||
1721 | onenand_panic_wait(mtd); | |
1722 | ||
1723 | /* In partial page write we don't update bufferram */ | |
1724 | onenand_update_bufferram(mtd, to, !ret && !subpage); | |
1725 | if (ONENAND_IS_2PLANE(this)) { | |
1726 | ONENAND_SET_BUFFERRAM1(this); | |
1727 | onenand_update_bufferram(mtd, to + this->writesize, !ret && !subpage); | |
1728 | } | |
1729 | ||
1730 | if (ret) { | |
297758f8 | 1731 | printk(KERN_ERR "%s: write failed %d\n", __func__, ret); |
6c77fd64 RP |
1732 | break; |
1733 | } | |
1734 | ||
1735 | written += thislen; | |
1736 | ||
1737 | if (written == len) | |
1738 | break; | |
1739 | ||
1740 | column = 0; | |
1741 | to += thislen; | |
1742 | buf += thislen; | |
1743 | } | |
1744 | ||
1745 | *retlen = written; | |
1746 | return ret; | |
1747 | } | |
1748 | ||
cd5f6346 | 1749 | /** |
d15057b7 KP |
1750 | * onenand_fill_auto_oob - [Internal] oob auto-placement transfer |
1751 | * @param mtd MTD device structure | |
1752 | * @param oob_buf oob buffer | |
1753 | * @param buf source address | |
1754 | * @param column oob offset to write to | |
1755 | * @param thislen oob length to write | |
1756 | */ | |
1757 | static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf, | |
1758 | const u_char *buf, int column, int thislen) | |
1759 | { | |
1760 | struct onenand_chip *this = mtd->priv; | |
1761 | struct nand_oobfree *free; | |
1762 | int writecol = column; | |
1763 | int writeend = column + thislen; | |
1764 | int lastgap = 0; | |
1765 | unsigned int i; | |
1766 | ||
1767 | free = this->ecclayout->oobfree; | |
1768 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { | |
1769 | if (writecol >= lastgap) | |
1770 | writecol += free->offset - lastgap; | |
1771 | if (writeend >= lastgap) | |
1772 | writeend += free->offset - lastgap; | |
1773 | lastgap = free->offset + free->length; | |
1774 | } | |
1775 | free = this->ecclayout->oobfree; | |
1776 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { | |
1777 | int free_end = free->offset + free->length; | |
1778 | if (free->offset < writeend && free_end > writecol) { | |
1779 | int st = max_t(int,free->offset,writecol); | |
1780 | int ed = min_t(int,free_end,writeend); | |
1781 | int n = ed - st; | |
1782 | memcpy(oob_buf + st, buf, n); | |
1783 | buf += n; | |
1784 | } else if (column == 0) | |
1785 | break; | |
1786 | } | |
1787 | return 0; | |
1788 | } | |
1789 | ||
1790 | /** | |
49dc08ee | 1791 | * onenand_write_ops_nolock - [OneNAND Interface] write main and/or out-of-band |
cd5f6346 KP |
1792 | * @param mtd MTD device structure |
1793 | * @param to offset to write to | |
d15057b7 | 1794 | * @param ops oob operation description structure |
cd5f6346 | 1795 | * |
d15057b7 | 1796 | * Write main and/or oob with ECC |
cd5f6346 | 1797 | */ |
49dc08ee | 1798 | static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, |
d15057b7 | 1799 | struct mtd_oob_ops *ops) |
cd5f6346 KP |
1800 | { |
1801 | struct onenand_chip *this = mtd->priv; | |
9ce96908 KP |
1802 | int written = 0, column, thislen = 0, subpage = 0; |
1803 | int prev = 0, prevlen = 0, prev_subpage = 0, first = 1; | |
d15057b7 KP |
1804 | int oobwritten = 0, oobcolumn, thisooblen, oobsize; |
1805 | size_t len = ops->len; | |
1806 | size_t ooblen = ops->ooblen; | |
1807 | const u_char *buf = ops->datbuf; | |
1808 | const u_char *oob = ops->oobbuf; | |
1809 | u_char *oobbuf; | |
cd5f6346 KP |
1810 | int ret = 0; |
1811 | ||
297758f8 AKS |
1812 | DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n", |
1813 | __func__, (unsigned int) to, (int) len); | |
cd5f6346 KP |
1814 | |
1815 | /* Initialize retlen, in case of early exit */ | |
d15057b7 KP |
1816 | ops->retlen = 0; |
1817 | ops->oobretlen = 0; | |
cd5f6346 KP |
1818 | |
1819 | /* Do not allow writes past end of device */ | |
1820 | if (unlikely((to + len) > mtd->size)) { | |
297758f8 AKS |
1821 | printk(KERN_ERR "%s: Attempt write to past end of device\n", |
1822 | __func__); | |
cd5f6346 KP |
1823 | return -EINVAL; |
1824 | } | |
1825 | ||
1826 | /* Reject writes, which are not page aligned */ | |
b73d7e43 | 1827 | if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) { |
297758f8 AKS |
1828 | printk(KERN_ERR "%s: Attempt to write not page aligned data\n", |
1829 | __func__); | |
cd5f6346 KP |
1830 | return -EINVAL; |
1831 | } | |
1832 | ||
9ce96908 KP |
1833 | /* Check zero length */ |
1834 | if (!len) | |
1835 | return 0; | |
1836 | ||
d15057b7 KP |
1837 | if (ops->mode == MTD_OOB_AUTO) |
1838 | oobsize = this->ecclayout->oobavail; | |
1839 | else | |
1840 | oobsize = mtd->oobsize; | |
1841 | ||
1842 | oobcolumn = to & (mtd->oobsize - 1); | |
1843 | ||
60d84f97 | 1844 | column = to & (mtd->writesize - 1); |
60d84f97 | 1845 | |
cd5f6346 | 1846 | /* Loop until all data write */ |
9ce96908 KP |
1847 | while (1) { |
1848 | if (written < len) { | |
1849 | u_char *wbuf = (u_char *) buf; | |
60d84f97 | 1850 | |
9ce96908 KP |
1851 | thislen = min_t(int, mtd->writesize - column, len - written); |
1852 | thisooblen = min_t(int, oobsize - oobcolumn, ooblen - oobwritten); | |
d15057b7 | 1853 | |
9ce96908 | 1854 | cond_resched(); |
61a7e198 | 1855 | |
9ce96908 | 1856 | this->command(mtd, ONENAND_CMD_BUFFERRAM, to, thislen); |
60d84f97 | 1857 | |
9ce96908 KP |
1858 | /* Partial page write */ |
1859 | subpage = thislen < mtd->writesize; | |
1860 | if (subpage) { | |
1861 | memset(this->page_buf, 0xff, mtd->writesize); | |
1862 | memcpy(this->page_buf + column, buf, thislen); | |
1863 | wbuf = this->page_buf; | |
1864 | } | |
cd5f6346 | 1865 | |
9ce96908 | 1866 | this->write_bufferram(mtd, ONENAND_DATARAM, wbuf, 0, mtd->writesize); |
d15057b7 | 1867 | |
9ce96908 KP |
1868 | if (oob) { |
1869 | oobbuf = this->oob_buf; | |
d15057b7 | 1870 | |
9ce96908 KP |
1871 | /* We send data to spare ram with oobsize |
1872 | * to prevent byte access */ | |
1873 | memset(oobbuf, 0xff, mtd->oobsize); | |
1874 | if (ops->mode == MTD_OOB_AUTO) | |
1875 | onenand_fill_auto_oob(mtd, oobbuf, oob, oobcolumn, thisooblen); | |
1876 | else | |
1877 | memcpy(oobbuf + oobcolumn, oob, thisooblen); | |
d15057b7 | 1878 | |
9ce96908 KP |
1879 | oobwritten += thisooblen; |
1880 | oob += thisooblen; | |
1881 | oobcolumn = 0; | |
1882 | } else | |
1883 | oobbuf = (u_char *) ffchars; | |
1884 | ||
1885 | this->write_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); | |
d15057b7 | 1886 | } else |
9ce96908 | 1887 | ONENAND_SET_NEXT_BUFFERRAM(this); |
d15057b7 | 1888 | |
9ce96908 | 1889 | /* |
492e1501 MK |
1890 | * 2 PLANE, MLC, and Flex-OneNAND do not support |
1891 | * write-while-program feature. | |
9ce96908 KP |
1892 | */ |
1893 | if (!ONENAND_IS_2PLANE(this) && !first) { | |
1894 | ONENAND_SET_PREV_BUFFERRAM(this); | |
1895 | ||
1896 | ret = this->wait(mtd, FL_WRITING); | |
1897 | ||
1898 | /* In partial page write we don't update bufferram */ | |
1899 | onenand_update_bufferram(mtd, prev, !ret && !prev_subpage); | |
1900 | if (ret) { | |
1901 | written -= prevlen; | |
297758f8 AKS |
1902 | printk(KERN_ERR "%s: write failed %d\n", |
1903 | __func__, ret); | |
9ce96908 KP |
1904 | break; |
1905 | } | |
cd5f6346 | 1906 | |
9ce96908 KP |
1907 | if (written == len) { |
1908 | /* Only check verify write turn on */ | |
1909 | ret = onenand_verify(mtd, buf - len, to - len, len); | |
1910 | if (ret) | |
297758f8 AKS |
1911 | printk(KERN_ERR "%s: verify failed %d\n", |
1912 | __func__, ret); | |
9ce96908 KP |
1913 | break; |
1914 | } | |
cd5f6346 | 1915 | |
9ce96908 KP |
1916 | ONENAND_SET_NEXT_BUFFERRAM(this); |
1917 | } | |
81f38e11 | 1918 | |
9ce96908 KP |
1919 | this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize); |
1920 | ||
1921 | /* | |
1922 | * 2 PLANE, MLC, and Flex-OneNAND wait here | |
1923 | */ | |
ee9745fc | 1924 | if (ONENAND_IS_2PLANE(this)) { |
9ce96908 | 1925 | ret = this->wait(mtd, FL_WRITING); |
cd5f6346 | 1926 | |
9ce96908 KP |
1927 | /* In partial page write we don't update bufferram */ |
1928 | onenand_update_bufferram(mtd, to, !ret && !subpage); | |
1929 | if (ret) { | |
297758f8 AKS |
1930 | printk(KERN_ERR "%s: write failed %d\n", |
1931 | __func__, ret); | |
9ce96908 KP |
1932 | break; |
1933 | } | |
cd5f6346 | 1934 | |
9ce96908 KP |
1935 | /* Only check verify write turn on */ |
1936 | ret = onenand_verify(mtd, buf, to, thislen); | |
1937 | if (ret) { | |
297758f8 AKS |
1938 | printk(KERN_ERR "%s: verify failed %d\n", |
1939 | __func__, ret); | |
9ce96908 KP |
1940 | break; |
1941 | } | |
cd5f6346 | 1942 | |
9ce96908 | 1943 | written += thislen; |
81f38e11 | 1944 | |
9ce96908 KP |
1945 | if (written == len) |
1946 | break; | |
1947 | ||
1948 | } else | |
1949 | written += thislen; | |
cd5f6346 | 1950 | |
60d84f97 | 1951 | column = 0; |
9ce96908 KP |
1952 | prev_subpage = subpage; |
1953 | prev = to; | |
1954 | prevlen = thislen; | |
cd5f6346 KP |
1955 | to += thislen; |
1956 | buf += thislen; | |
9ce96908 | 1957 | first = 0; |
cd5f6346 KP |
1958 | } |
1959 | ||
9ce96908 KP |
1960 | /* In error case, clear all bufferrams */ |
1961 | if (written != len) | |
1962 | onenand_invalidate_bufferram(mtd, 0, -1); | |
1963 | ||
d15057b7 | 1964 | ops->retlen = written; |
9ce96908 | 1965 | ops->oobretlen = oobwritten; |
d5c5e78a | 1966 | |
cd5f6346 KP |
1967 | return ret; |
1968 | } | |
1969 | ||
a5e7c7b4 | 1970 | |
cd5f6346 | 1971 | /** |
49dc08ee | 1972 | * onenand_write_oob_nolock - [Internal] OneNAND write out-of-band |
cd5f6346 KP |
1973 | * @param mtd MTD device structure |
1974 | * @param to offset to write to | |
1975 | * @param len number of bytes to write | |
1976 | * @param retlen pointer to variable to store the number of written bytes | |
1977 | * @param buf the data to write | |
a5e7c7b4 | 1978 | * @param mode operation mode |
cd5f6346 KP |
1979 | * |
1980 | * OneNAND write out-of-band | |
1981 | */ | |
49dc08ee AB |
1982 | static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, |
1983 | struct mtd_oob_ops *ops) | |
cd5f6346 KP |
1984 | { |
1985 | struct onenand_chip *this = mtd->priv; | |
a5e7c7b4 | 1986 | int column, ret = 0, oobsize; |
5988af23 | 1987 | int written = 0, oobcmd; |
91014e9b | 1988 | u_char *oobbuf; |
12f77c9e KP |
1989 | size_t len = ops->ooblen; |
1990 | const u_char *buf = ops->oobbuf; | |
1991 | mtd_oob_mode_t mode = ops->mode; | |
1992 | ||
1993 | to += ops->ooboffs; | |
cd5f6346 | 1994 | |
297758f8 AKS |
1995 | DEBUG(MTD_DEBUG_LEVEL3, "%s: to = 0x%08x, len = %i\n", |
1996 | __func__, (unsigned int) to, (int) len); | |
cd5f6346 KP |
1997 | |
1998 | /* Initialize retlen, in case of early exit */ | |
12f77c9e | 1999 | ops->oobretlen = 0; |
cd5f6346 | 2000 | |
a5e7c7b4 AH |
2001 | if (mode == MTD_OOB_AUTO) |
2002 | oobsize = this->ecclayout->oobavail; | |
2003 | else | |
2004 | oobsize = mtd->oobsize; | |
2005 | ||
2006 | column = to & (mtd->oobsize - 1); | |
2007 | ||
2008 | if (unlikely(column >= oobsize)) { | |
297758f8 AKS |
2009 | printk(KERN_ERR "%s: Attempted to start write outside oob\n", |
2010 | __func__); | |
a5e7c7b4 AH |
2011 | return -EINVAL; |
2012 | } | |
2013 | ||
52e4200a | 2014 | /* For compatibility with NAND: Do not allow write past end of page */ |
91014e9b | 2015 | if (unlikely(column + len > oobsize)) { |
297758f8 AKS |
2016 | printk(KERN_ERR "%s: Attempt to write past end of page\n", |
2017 | __func__); | |
52e4200a AH |
2018 | return -EINVAL; |
2019 | } | |
2020 | ||
a5e7c7b4 AH |
2021 | /* Do not allow reads past end of device */ |
2022 | if (unlikely(to >= mtd->size || | |
2023 | column + len > ((mtd->size >> this->page_shift) - | |
2024 | (to >> this->page_shift)) * oobsize)) { | |
297758f8 AKS |
2025 | printk(KERN_ERR "%s: Attempted to write past end of device\n" |
2026 | __func__); | |
cd5f6346 KP |
2027 | return -EINVAL; |
2028 | } | |
2029 | ||
470bc844 | 2030 | oobbuf = this->oob_buf; |
91014e9b | 2031 | |
5988af23 RH |
2032 | oobcmd = ONENAND_IS_MLC(this) ? ONENAND_CMD_PROG : ONENAND_CMD_PROGOOB; |
2033 | ||
cd5f6346 KP |
2034 | /* Loop until all data write */ |
2035 | while (written < len) { | |
a5e7c7b4 | 2036 | int thislen = min_t(int, oobsize, len - written); |
cd5f6346 | 2037 | |
61a7e198 AB |
2038 | cond_resched(); |
2039 | ||
cd5f6346 KP |
2040 | this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobsize); |
2041 | ||
34c10609 KP |
2042 | /* We send data to spare ram with oobsize |
2043 | * to prevent byte access */ | |
91014e9b | 2044 | memset(oobbuf, 0xff, mtd->oobsize); |
a5e7c7b4 | 2045 | if (mode == MTD_OOB_AUTO) |
91014e9b | 2046 | onenand_fill_auto_oob(mtd, oobbuf, buf, column, thislen); |
a5e7c7b4 | 2047 | else |
91014e9b KP |
2048 | memcpy(oobbuf + column, buf, thislen); |
2049 | this->write_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); | |
cd5f6346 | 2050 | |
5988af23 RH |
2051 | if (ONENAND_IS_MLC(this)) { |
2052 | /* Set main area of DataRAM to 0xff*/ | |
2053 | memset(this->page_buf, 0xff, mtd->writesize); | |
2054 | this->write_bufferram(mtd, ONENAND_DATARAM, | |
2055 | this->page_buf, 0, mtd->writesize); | |
2056 | } | |
2057 | ||
2058 | this->command(mtd, oobcmd, to, mtd->oobsize); | |
cd5f6346 KP |
2059 | |
2060 | onenand_update_bufferram(mtd, to, 0); | |
ee9745fc KP |
2061 | if (ONENAND_IS_2PLANE(this)) { |
2062 | ONENAND_SET_BUFFERRAM1(this); | |
2063 | onenand_update_bufferram(mtd, to + this->writesize, 0); | |
2064 | } | |
cd5f6346 | 2065 | |
8e6ec690 KP |
2066 | ret = this->wait(mtd, FL_WRITING); |
2067 | if (ret) { | |
297758f8 | 2068 | printk(KERN_ERR "%s: write failed %d\n", __func__, ret); |
5b4246f1 | 2069 | break; |
8e6ec690 KP |
2070 | } |
2071 | ||
91014e9b | 2072 | ret = onenand_verify_oob(mtd, oobbuf, to); |
8e6ec690 | 2073 | if (ret) { |
297758f8 AKS |
2074 | printk(KERN_ERR "%s: verify failed %d\n", |
2075 | __func__, ret); | |
5b4246f1 | 2076 | break; |
8e6ec690 | 2077 | } |
cd5f6346 KP |
2078 | |
2079 | written += thislen; | |
cd5f6346 KP |
2080 | if (written == len) |
2081 | break; | |
2082 | ||
a5e7c7b4 | 2083 | to += mtd->writesize; |
cd5f6346 | 2084 | buf += thislen; |
a5e7c7b4 | 2085 | column = 0; |
cd5f6346 KP |
2086 | } |
2087 | ||
12f77c9e | 2088 | ops->oobretlen = written; |
d5c5e78a | 2089 | |
8e6ec690 | 2090 | return ret; |
cd5f6346 KP |
2091 | } |
2092 | ||
d15057b7 KP |
2093 | /** |
2094 | * onenand_write - [MTD Interface] write buffer to FLASH | |
2095 | * @param mtd MTD device structure | |
2096 | * @param to offset to write to | |
2097 | * @param len number of bytes to write | |
2098 | * @param retlen pointer to variable to store the number of written bytes | |
2099 | * @param buf the data to write | |
2100 | * | |
2101 | * Write with ECC | |
2102 | */ | |
2103 | static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len, | |
2104 | size_t *retlen, const u_char *buf) | |
2105 | { | |
2106 | struct mtd_oob_ops ops = { | |
2107 | .len = len, | |
2108 | .ooblen = 0, | |
2109 | .datbuf = (u_char *) buf, | |
2110 | .oobbuf = NULL, | |
2111 | }; | |
2112 | int ret; | |
2113 | ||
49dc08ee AB |
2114 | onenand_get_device(mtd, FL_WRITING); |
2115 | ret = onenand_write_ops_nolock(mtd, to, &ops); | |
2116 | onenand_release_device(mtd); | |
d15057b7 | 2117 | |
49dc08ee | 2118 | *retlen = ops.retlen; |
d15057b7 KP |
2119 | return ret; |
2120 | } | |
2121 | ||
8593fbc6 TG |
2122 | /** |
2123 | * onenand_write_oob - [MTD Interface] NAND write data and/or out-of-band | |
e3da8067 KP |
2124 | * @param mtd: MTD device structure |
2125 | * @param to: offset to write | |
2126 | * @param ops: oob operation description structure | |
8593fbc6 TG |
2127 | */ |
2128 | static int onenand_write_oob(struct mtd_info *mtd, loff_t to, | |
2129 | struct mtd_oob_ops *ops) | |
2130 | { | |
49dc08ee AB |
2131 | int ret; |
2132 | ||
4f4fad27 | 2133 | switch (ops->mode) { |
a5e7c7b4 AH |
2134 | case MTD_OOB_PLACE: |
2135 | case MTD_OOB_AUTO: | |
2136 | break; | |
2137 | case MTD_OOB_RAW: | |
4f4fad27 | 2138 | /* Not implemented yet */ |
a5e7c7b4 AH |
2139 | default: |
2140 | return -EINVAL; | |
2141 | } | |
d15057b7 | 2142 | |
49dc08ee | 2143 | onenand_get_device(mtd, FL_WRITING); |
d15057b7 | 2144 | if (ops->datbuf) |
49dc08ee AB |
2145 | ret = onenand_write_ops_nolock(mtd, to, ops); |
2146 | else | |
2147 | ret = onenand_write_oob_nolock(mtd, to, ops); | |
2148 | onenand_release_device(mtd); | |
d15057b7 | 2149 | |
49dc08ee | 2150 | return ret; |
8593fbc6 TG |
2151 | } |
2152 | ||
cdc00130 | 2153 | /** |
49dc08ee | 2154 | * onenand_block_isbad_nolock - [GENERIC] Check if a block is marked bad |
cdc00130 KP |
2155 | * @param mtd MTD device structure |
2156 | * @param ofs offset from device start | |
cdc00130 KP |
2157 | * @param allowbbt 1, if its allowed to access the bbt area |
2158 | * | |
2159 | * Check, if the block is bad. Either by reading the bad block table or | |
2160 | * calling of the scan function. | |
2161 | */ | |
49dc08ee | 2162 | static int onenand_block_isbad_nolock(struct mtd_info *mtd, loff_t ofs, int allowbbt) |
cdc00130 KP |
2163 | { |
2164 | struct onenand_chip *this = mtd->priv; | |
2165 | struct bbm_info *bbm = this->bbm; | |
2166 | ||
2167 | /* Return info from the table */ | |
2168 | return bbm->isbad_bbt(mtd, ofs, allowbbt); | |
2169 | } | |
2170 | ||
cd5f6346 KP |
2171 | /** |
2172 | * onenand_erase - [MTD Interface] erase block(s) | |
2173 | * @param mtd MTD device structure | |
2174 | * @param instr erase instruction | |
2175 | * | |
2176 | * Erase one ore more blocks | |
2177 | */ | |
2178 | static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) | |
2179 | { | |
2180 | struct onenand_chip *this = mtd->priv; | |
2181 | unsigned int block_size; | |
5988af23 RH |
2182 | loff_t addr = instr->addr; |
2183 | loff_t len = instr->len; | |
2184 | int ret = 0, i; | |
2185 | struct mtd_erase_region_info *region = NULL; | |
2186 | loff_t region_end = 0; | |
cd5f6346 | 2187 | |
69423d99 | 2188 | DEBUG(MTD_DEBUG_LEVEL3, "onenand_erase: start = 0x%012llx, len = %llu\n", (unsigned long long) instr->addr, (unsigned long long) instr->len); |
cd5f6346 | 2189 | |
5988af23 RH |
2190 | /* Do not allow erase past end of device */ |
2191 | if (unlikely((len + addr) > mtd->size)) { | |
297758f8 | 2192 | printk(KERN_ERR "%s: Erase past end of device\n", __func__); |
cd5f6346 KP |
2193 | return -EINVAL; |
2194 | } | |
2195 | ||
5988af23 RH |
2196 | if (FLEXONENAND(this)) { |
2197 | /* Find the eraseregion of this address */ | |
2198 | i = flexonenand_region(mtd, addr); | |
2199 | region = &mtd->eraseregions[i]; | |
2200 | ||
2201 | block_size = region->erasesize; | |
2202 | region_end = region->offset + region->erasesize * region->numblocks; | |
2203 | ||
2204 | /* Start address within region must align on block boundary. | |
2205 | * Erase region's start offset is always block start address. | |
2206 | */ | |
2207 | if (unlikely((addr - region->offset) & (block_size - 1))) { | |
297758f8 | 2208 | printk(KERN_ERR "%s: Unaligned address\n", __func__); |
5988af23 RH |
2209 | return -EINVAL; |
2210 | } | |
2211 | } else { | |
2212 | block_size = 1 << this->erase_shift; | |
2213 | ||
2214 | /* Start address must align on block boundary */ | |
2215 | if (unlikely(addr & (block_size - 1))) { | |
297758f8 | 2216 | printk(KERN_ERR "%s: Unaligned address\n", __func__); |
5988af23 RH |
2217 | return -EINVAL; |
2218 | } | |
cd5f6346 KP |
2219 | } |
2220 | ||
5988af23 RH |
2221 | /* Length must align on block boundary */ |
2222 | if (unlikely(len & (block_size - 1))) { | |
297758f8 | 2223 | printk(KERN_ERR "%s: Length not block aligned\n", __func__); |
cd5f6346 KP |
2224 | return -EINVAL; |
2225 | } | |
2226 | ||
bb0eb217 | 2227 | instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; |
cd5f6346 KP |
2228 | |
2229 | /* Grab the lock and see if the device is available */ | |
2230 | onenand_get_device(mtd, FL_ERASING); | |
2231 | ||
492e1501 | 2232 | /* Loop through the blocks */ |
cd5f6346 KP |
2233 | instr->state = MTD_ERASING; |
2234 | ||
2235 | while (len) { | |
61a7e198 | 2236 | cond_resched(); |
cd5f6346 | 2237 | |
cdc00130 | 2238 | /* Check if we have a bad block, we do not erase bad blocks */ |
49dc08ee | 2239 | if (onenand_block_isbad_nolock(mtd, addr, 0)) { |
297758f8 AKS |
2240 | printk(KERN_WARNING "%s: attempt to erase a bad block " |
2241 | "at addr 0x%012llx\n", | |
2242 | __func__, (unsigned long long) addr); | |
cdc00130 KP |
2243 | instr->state = MTD_ERASE_FAILED; |
2244 | goto erase_exit; | |
2245 | } | |
cd5f6346 KP |
2246 | |
2247 | this->command(mtd, ONENAND_CMD_ERASE, addr, block_size); | |
2248 | ||
480b9dfb AH |
2249 | onenand_invalidate_bufferram(mtd, addr, block_size); |
2250 | ||
cd5f6346 KP |
2251 | ret = this->wait(mtd, FL_ERASING); |
2252 | /* Check, if it is write protected */ | |
2253 | if (ret) { | |
297758f8 AKS |
2254 | printk(KERN_ERR "%s: Failed erase, block %d\n", |
2255 | __func__, onenand_block(this, addr)); | |
cd5f6346 KP |
2256 | instr->state = MTD_ERASE_FAILED; |
2257 | instr->fail_addr = addr; | |
2258 | goto erase_exit; | |
2259 | } | |
2260 | ||
2261 | len -= block_size; | |
2262 | addr += block_size; | |
5988af23 RH |
2263 | |
2264 | if (addr == region_end) { | |
2265 | if (!len) | |
2266 | break; | |
2267 | region++; | |
2268 | ||
2269 | block_size = region->erasesize; | |
2270 | region_end = region->offset + region->erasesize * region->numblocks; | |
2271 | ||
2272 | if (len & (block_size - 1)) { | |
2273 | /* FIXME: This should be handled at MTD partitioning level. */ | |
297758f8 AKS |
2274 | printk(KERN_ERR "%s: Unaligned address\n", |
2275 | __func__); | |
5988af23 RH |
2276 | goto erase_exit; |
2277 | } | |
2278 | } | |
2279 | ||
cd5f6346 KP |
2280 | } |
2281 | ||
2282 | instr->state = MTD_ERASE_DONE; | |
2283 | ||
2284 | erase_exit: | |
2285 | ||
2286 | ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO; | |
cd5f6346 KP |
2287 | |
2288 | /* Deselect and wake up anyone waiting on the device */ | |
2289 | onenand_release_device(mtd); | |
2290 | ||
3cd3a86b AH |
2291 | /* Do call back function */ |
2292 | if (!ret) | |
2293 | mtd_erase_callback(instr); | |
2294 | ||
cd5f6346 KP |
2295 | return ret; |
2296 | } | |
2297 | ||
2298 | /** | |
2299 | * onenand_sync - [MTD Interface] sync | |
2300 | * @param mtd MTD device structure | |
2301 | * | |
2302 | * Sync is actually a wait for chip ready function | |
2303 | */ | |
2304 | static void onenand_sync(struct mtd_info *mtd) | |
2305 | { | |
297758f8 | 2306 | DEBUG(MTD_DEBUG_LEVEL3, "%s: called\n", __func__); |
cd5f6346 KP |
2307 | |
2308 | /* Grab the lock and see if the device is available */ | |
2309 | onenand_get_device(mtd, FL_SYNCING); | |
2310 | ||
2311 | /* Release it and go back */ | |
2312 | onenand_release_device(mtd); | |
2313 | } | |
2314 | ||
2315 | /** | |
2316 | * onenand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad | |
2317 | * @param mtd MTD device structure | |
2318 | * @param ofs offset relative to mtd start | |
cdc00130 KP |
2319 | * |
2320 | * Check whether the block is bad | |
cd5f6346 KP |
2321 | */ |
2322 | static int onenand_block_isbad(struct mtd_info *mtd, loff_t ofs) | |
2323 | { | |
49dc08ee AB |
2324 | int ret; |
2325 | ||
cdc00130 KP |
2326 | /* Check for invalid offset */ |
2327 | if (ofs > mtd->size) | |
2328 | return -EINVAL; | |
2329 | ||
49dc08ee AB |
2330 | onenand_get_device(mtd, FL_READING); |
2331 | ret = onenand_block_isbad_nolock(mtd, ofs, 0); | |
2332 | onenand_release_device(mtd); | |
2333 | return ret; | |
cdc00130 KP |
2334 | } |
2335 | ||
2336 | /** | |
2337 | * onenand_default_block_markbad - [DEFAULT] mark a block bad | |
2338 | * @param mtd MTD device structure | |
2339 | * @param ofs offset from device start | |
2340 | * | |
2341 | * This is the default implementation, which can be overridden by | |
2342 | * a hardware specific driver. | |
2343 | */ | |
2344 | static int onenand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) | |
2345 | { | |
2346 | struct onenand_chip *this = mtd->priv; | |
2347 | struct bbm_info *bbm = this->bbm; | |
2348 | u_char buf[2] = {0, 0}; | |
12f77c9e KP |
2349 | struct mtd_oob_ops ops = { |
2350 | .mode = MTD_OOB_PLACE, | |
2351 | .ooblen = 2, | |
2352 | .oobbuf = buf, | |
2353 | .ooboffs = 0, | |
2354 | }; | |
cdc00130 KP |
2355 | int block; |
2356 | ||
2357 | /* Get block number */ | |
5988af23 | 2358 | block = onenand_block(this, ofs); |
cdc00130 KP |
2359 | if (bbm->bbt) |
2360 | bbm->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1); | |
2361 | ||
492e1501 | 2362 | /* We write two bytes, so we don't have to mess with 16-bit access */ |
cdc00130 | 2363 | ofs += mtd->oobsize + (bbm->badblockpos & ~0x01); |
5988af23 RH |
2364 | /* FIXME : What to do when marking SLC block in partition |
2365 | * with MLC erasesize? For now, it is not advisable to | |
2366 | * create partitions containing both SLC and MLC regions. | |
2367 | */ | |
2368 | return onenand_write_oob_nolock(mtd, ofs, &ops); | |
cd5f6346 KP |
2369 | } |
2370 | ||
2371 | /** | |
2372 | * onenand_block_markbad - [MTD Interface] Mark the block at the given offset as bad | |
2373 | * @param mtd MTD device structure | |
2374 | * @param ofs offset relative to mtd start | |
cdc00130 KP |
2375 | * |
2376 | * Mark the block as bad | |
cd5f6346 KP |
2377 | */ |
2378 | static int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs) | |
2379 | { | |
cdc00130 KP |
2380 | struct onenand_chip *this = mtd->priv; |
2381 | int ret; | |
2382 | ||
2383 | ret = onenand_block_isbad(mtd, ofs); | |
2384 | if (ret) { | |
2385 | /* If it was bad already, return success and do nothing */ | |
2386 | if (ret > 0) | |
2387 | return 0; | |
2388 | return ret; | |
2389 | } | |
2390 | ||
49dc08ee AB |
2391 | onenand_get_device(mtd, FL_WRITING); |
2392 | ret = this->block_markbad(mtd, ofs); | |
2393 | onenand_release_device(mtd); | |
2394 | return ret; | |
cd5f6346 KP |
2395 | } |
2396 | ||
2397 | /** | |
08f782b6 | 2398 | * onenand_do_lock_cmd - [OneNAND Interface] Lock or unlock block(s) |
cd5f6346 KP |
2399 | * @param mtd MTD device structure |
2400 | * @param ofs offset relative to mtd start | |
08f782b6 | 2401 | * @param len number of bytes to lock or unlock |
e3da8067 | 2402 | * @param cmd lock or unlock command |
cd5f6346 | 2403 | * |
08f782b6 | 2404 | * Lock or unlock one or more blocks |
cd5f6346 | 2405 | */ |
08f782b6 | 2406 | static int onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs, size_t len, int cmd) |
cd5f6346 KP |
2407 | { |
2408 | struct onenand_chip *this = mtd->priv; | |
2409 | int start, end, block, value, status; | |
08f782b6 | 2410 | int wp_status_mask; |
cd5f6346 | 2411 | |
5988af23 RH |
2412 | start = onenand_block(this, ofs); |
2413 | end = onenand_block(this, ofs + len) - 1; | |
cd5f6346 | 2414 | |
08f782b6 KP |
2415 | if (cmd == ONENAND_CMD_LOCK) |
2416 | wp_status_mask = ONENAND_WP_LS; | |
2417 | else | |
2418 | wp_status_mask = ONENAND_WP_US; | |
2419 | ||
cd5f6346 | 2420 | /* Continuous lock scheme */ |
28b79ff9 | 2421 | if (this->options & ONENAND_HAS_CONT_LOCK) { |
cd5f6346 KP |
2422 | /* Set start block address */ |
2423 | this->write_word(start, this->base + ONENAND_REG_START_BLOCK_ADDRESS); | |
2424 | /* Set end block address */ | |
5988af23 | 2425 | this->write_word(end, this->base + ONENAND_REG_END_BLOCK_ADDRESS); |
08f782b6 KP |
2426 | /* Write lock command */ |
2427 | this->command(mtd, cmd, 0, 0); | |
cd5f6346 KP |
2428 | |
2429 | /* There's no return value */ | |
08f782b6 | 2430 | this->wait(mtd, FL_LOCKING); |
cd5f6346 KP |
2431 | |
2432 | /* Sanity check */ | |
2433 | while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS) | |
2434 | & ONENAND_CTRL_ONGO) | |
2435 | continue; | |
2436 | ||
2437 | /* Check lock status */ | |
2438 | status = this->read_word(this->base + ONENAND_REG_WP_STATUS); | |
08f782b6 | 2439 | if (!(status & wp_status_mask)) |
297758f8 AKS |
2440 | printk(KERN_ERR "%s: wp status = 0x%x\n", |
2441 | __func__, status); | |
cd5f6346 KP |
2442 | |
2443 | return 0; | |
2444 | } | |
2445 | ||
2446 | /* Block lock scheme */ | |
5988af23 | 2447 | for (block = start; block < end + 1; block++) { |
20ba89a3 KP |
2448 | /* Set block address */ |
2449 | value = onenand_block_address(this, block); | |
2450 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1); | |
2451 | /* Select DataRAM for DDP */ | |
2452 | value = onenand_bufferram_address(this, block); | |
2453 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); | |
cd5f6346 KP |
2454 | /* Set start block address */ |
2455 | this->write_word(block, this->base + ONENAND_REG_START_BLOCK_ADDRESS); | |
08f782b6 KP |
2456 | /* Write lock command */ |
2457 | this->command(mtd, cmd, 0, 0); | |
cd5f6346 KP |
2458 | |
2459 | /* There's no return value */ | |
08f782b6 | 2460 | this->wait(mtd, FL_LOCKING); |
cd5f6346 KP |
2461 | |
2462 | /* Sanity check */ | |
2463 | while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS) | |
2464 | & ONENAND_CTRL_ONGO) | |
2465 | continue; | |
2466 | ||
cd5f6346 KP |
2467 | /* Check lock status */ |
2468 | status = this->read_word(this->base + ONENAND_REG_WP_STATUS); | |
08f782b6 | 2469 | if (!(status & wp_status_mask)) |
297758f8 AKS |
2470 | printk(KERN_ERR "%s: block = %d, wp status = 0x%x\n", |
2471 | __func__, block, status); | |
cd5f6346 | 2472 | } |
d5c5e78a | 2473 | |
cd5f6346 KP |
2474 | return 0; |
2475 | } | |
2476 | ||
08f782b6 KP |
2477 | /** |
2478 | * onenand_lock - [MTD Interface] Lock block(s) | |
2479 | * @param mtd MTD device structure | |
2480 | * @param ofs offset relative to mtd start | |
2481 | * @param len number of bytes to unlock | |
2482 | * | |
2483 | * Lock one or more blocks | |
2484 | */ | |
69423d99 | 2485 | static int onenand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) |
08f782b6 | 2486 | { |
34627f0e AH |
2487 | int ret; |
2488 | ||
2489 | onenand_get_device(mtd, FL_LOCKING); | |
2490 | ret = onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_LOCK); | |
2491 | onenand_release_device(mtd); | |
2492 | return ret; | |
08f782b6 KP |
2493 | } |
2494 | ||
08f782b6 KP |
2495 | /** |
2496 | * onenand_unlock - [MTD Interface] Unlock block(s) | |
2497 | * @param mtd MTD device structure | |
2498 | * @param ofs offset relative to mtd start | |
2499 | * @param len number of bytes to unlock | |
2500 | * | |
2501 | * Unlock one or more blocks | |
2502 | */ | |
69423d99 | 2503 | static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) |
08f782b6 | 2504 | { |
34627f0e AH |
2505 | int ret; |
2506 | ||
2507 | onenand_get_device(mtd, FL_LOCKING); | |
2508 | ret = onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK); | |
2509 | onenand_release_device(mtd); | |
2510 | return ret; | |
08f782b6 KP |
2511 | } |
2512 | ||
28b79ff9 KP |
2513 | /** |
2514 | * onenand_check_lock_status - [OneNAND Interface] Check lock status | |
2515 | * @param this onenand chip data structure | |
2516 | * | |
2517 | * Check lock status | |
2518 | */ | |
66a10506 | 2519 | static int onenand_check_lock_status(struct onenand_chip *this) |
28b79ff9 KP |
2520 | { |
2521 | unsigned int value, block, status; | |
2522 | unsigned int end; | |
2523 | ||
2524 | end = this->chipsize >> this->erase_shift; | |
2525 | for (block = 0; block < end; block++) { | |
2526 | /* Set block address */ | |
2527 | value = onenand_block_address(this, block); | |
2528 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1); | |
2529 | /* Select DataRAM for DDP */ | |
2530 | value = onenand_bufferram_address(this, block); | |
2531 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); | |
2532 | /* Set start block address */ | |
2533 | this->write_word(block, this->base + ONENAND_REG_START_BLOCK_ADDRESS); | |
2534 | ||
2535 | /* Check lock status */ | |
2536 | status = this->read_word(this->base + ONENAND_REG_WP_STATUS); | |
66a10506 | 2537 | if (!(status & ONENAND_WP_US)) { |
297758f8 AKS |
2538 | printk(KERN_ERR "%s: block = %d, wp status = 0x%x\n", |
2539 | __func__, block, status); | |
66a10506 KP |
2540 | return 0; |
2541 | } | |
28b79ff9 | 2542 | } |
66a10506 KP |
2543 | |
2544 | return 1; | |
28b79ff9 KP |
2545 | } |
2546 | ||
2547 | /** | |
2548 | * onenand_unlock_all - [OneNAND Interface] unlock all blocks | |
2549 | * @param mtd MTD device structure | |
2550 | * | |
2551 | * Unlock all blocks | |
2552 | */ | |
66a10506 | 2553 | static void onenand_unlock_all(struct mtd_info *mtd) |
28b79ff9 KP |
2554 | { |
2555 | struct onenand_chip *this = mtd->priv; | |
66a10506 | 2556 | loff_t ofs = 0; |
5988af23 | 2557 | loff_t len = mtd->size; |
28b79ff9 KP |
2558 | |
2559 | if (this->options & ONENAND_HAS_UNLOCK_ALL) { | |
10b7a2bd KP |
2560 | /* Set start block address */ |
2561 | this->write_word(0, this->base + ONENAND_REG_START_BLOCK_ADDRESS); | |
28b79ff9 KP |
2562 | /* Write unlock command */ |
2563 | this->command(mtd, ONENAND_CMD_UNLOCK_ALL, 0, 0); | |
2564 | ||
2565 | /* There's no return value */ | |
08f782b6 | 2566 | this->wait(mtd, FL_LOCKING); |
28b79ff9 KP |
2567 | |
2568 | /* Sanity check */ | |
2569 | while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS) | |
2570 | & ONENAND_CTRL_ONGO) | |
2571 | continue; | |
2572 | ||
31bb999e KP |
2573 | /* Don't check lock status */ |
2574 | if (this->options & ONENAND_SKIP_UNLOCK_CHECK) | |
2575 | return; | |
2576 | ||
66a10506 KP |
2577 | /* Check lock status */ |
2578 | if (onenand_check_lock_status(this)) | |
2579 | return; | |
2580 | ||
28b79ff9 | 2581 | /* Workaround for all block unlock in DDP */ |
5988af23 | 2582 | if (ONENAND_IS_DDP(this) && !FLEXONENAND(this)) { |
66a10506 KP |
2583 | /* All blocks on another chip */ |
2584 | ofs = this->chipsize >> 1; | |
2585 | len = this->chipsize >> 1; | |
28b79ff9 | 2586 | } |
28b79ff9 KP |
2587 | } |
2588 | ||
66a10506 | 2589 | onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK); |
28b79ff9 KP |
2590 | } |
2591 | ||
493c6460 KP |
2592 | #ifdef CONFIG_MTD_ONENAND_OTP |
2593 | ||
492e1501 | 2594 | /* Internal OTP operation */ |
493c6460 KP |
2595 | typedef int (*otp_op_t)(struct mtd_info *mtd, loff_t form, size_t len, |
2596 | size_t *retlen, u_char *buf); | |
2597 | ||
2598 | /** | |
2599 | * do_otp_read - [DEFAULT] Read OTP block area | |
2600 | * @param mtd MTD device structure | |
2601 | * @param from The offset to read | |
2602 | * @param len number of bytes to read | |
2603 | * @param retlen pointer to variable to store the number of readbytes | |
2604 | * @param buf the databuffer to put/get data | |
2605 | * | |
2606 | * Read OTP block area. | |
2607 | */ | |
2608 | static int do_otp_read(struct mtd_info *mtd, loff_t from, size_t len, | |
2609 | size_t *retlen, u_char *buf) | |
2610 | { | |
2611 | struct onenand_chip *this = mtd->priv; | |
49dc08ee AB |
2612 | struct mtd_oob_ops ops = { |
2613 | .len = len, | |
2614 | .ooblen = 0, | |
2615 | .datbuf = buf, | |
2616 | .oobbuf = NULL, | |
2617 | }; | |
493c6460 KP |
2618 | int ret; |
2619 | ||
2620 | /* Enter OTP access mode */ | |
2621 | this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); | |
2622 | this->wait(mtd, FL_OTPING); | |
2623 | ||
5988af23 RH |
2624 | ret = ONENAND_IS_MLC(this) ? |
2625 | onenand_mlc_read_ops_nolock(mtd, from, &ops) : | |
2626 | onenand_read_ops_nolock(mtd, from, &ops); | |
493c6460 KP |
2627 | |
2628 | /* Exit OTP access mode */ | |
2629 | this->command(mtd, ONENAND_CMD_RESET, 0, 0); | |
2630 | this->wait(mtd, FL_RESETING); | |
2631 | ||
2632 | return ret; | |
2633 | } | |
2634 | ||
2635 | /** | |
2636 | * do_otp_write - [DEFAULT] Write OTP block area | |
2637 | * @param mtd MTD device structure | |
49dc08ee | 2638 | * @param to The offset to write |
493c6460 KP |
2639 | * @param len number of bytes to write |
2640 | * @param retlen pointer to variable to store the number of write bytes | |
2641 | * @param buf the databuffer to put/get data | |
2642 | * | |
2643 | * Write OTP block area. | |
2644 | */ | |
49dc08ee | 2645 | static int do_otp_write(struct mtd_info *mtd, loff_t to, size_t len, |
493c6460 KP |
2646 | size_t *retlen, u_char *buf) |
2647 | { | |
2648 | struct onenand_chip *this = mtd->priv; | |
2649 | unsigned char *pbuf = buf; | |
2650 | int ret; | |
49dc08ee | 2651 | struct mtd_oob_ops ops; |
493c6460 KP |
2652 | |
2653 | /* Force buffer page aligned */ | |
28318776 | 2654 | if (len < mtd->writesize) { |
493c6460 | 2655 | memcpy(this->page_buf, buf, len); |
28318776 | 2656 | memset(this->page_buf + len, 0xff, mtd->writesize - len); |
493c6460 | 2657 | pbuf = this->page_buf; |
28318776 | 2658 | len = mtd->writesize; |
493c6460 KP |
2659 | } |
2660 | ||
2661 | /* Enter OTP access mode */ | |
2662 | this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); | |
2663 | this->wait(mtd, FL_OTPING); | |
2664 | ||
49dc08ee AB |
2665 | ops.len = len; |
2666 | ops.ooblen = 0; | |
1437085c | 2667 | ops.datbuf = pbuf; |
49dc08ee AB |
2668 | ops.oobbuf = NULL; |
2669 | ret = onenand_write_ops_nolock(mtd, to, &ops); | |
2670 | *retlen = ops.retlen; | |
493c6460 KP |
2671 | |
2672 | /* Exit OTP access mode */ | |
2673 | this->command(mtd, ONENAND_CMD_RESET, 0, 0); | |
2674 | this->wait(mtd, FL_RESETING); | |
2675 | ||
2676 | return ret; | |
2677 | } | |
2678 | ||
2679 | /** | |
2680 | * do_otp_lock - [DEFAULT] Lock OTP block area | |
2681 | * @param mtd MTD device structure | |
2682 | * @param from The offset to lock | |
2683 | * @param len number of bytes to lock | |
2684 | * @param retlen pointer to variable to store the number of lock bytes | |
2685 | * @param buf the databuffer to put/get data | |
2686 | * | |
2687 | * Lock OTP block area. | |
2688 | */ | |
2689 | static int do_otp_lock(struct mtd_info *mtd, loff_t from, size_t len, | |
2690 | size_t *retlen, u_char *buf) | |
2691 | { | |
2692 | struct onenand_chip *this = mtd->priv; | |
5988af23 | 2693 | struct mtd_oob_ops ops; |
493c6460 KP |
2694 | int ret; |
2695 | ||
2696 | /* Enter OTP access mode */ | |
2697 | this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); | |
2698 | this->wait(mtd, FL_OTPING); | |
2699 | ||
5988af23 RH |
2700 | if (FLEXONENAND(this)) { |
2701 | /* | |
2702 | * For Flex-OneNAND, we write lock mark to 1st word of sector 4 of | |
2703 | * main area of page 49. | |
2704 | */ | |
2705 | ops.len = mtd->writesize; | |
2706 | ops.ooblen = 0; | |
2707 | ops.datbuf = buf; | |
2708 | ops.oobbuf = NULL; | |
2709 | ret = onenand_write_ops_nolock(mtd, mtd->writesize * 49, &ops); | |
2710 | *retlen = ops.retlen; | |
2711 | } else { | |
2712 | ops.mode = MTD_OOB_PLACE; | |
2713 | ops.ooblen = len; | |
2714 | ops.oobbuf = buf; | |
2715 | ops.ooboffs = 0; | |
2716 | ret = onenand_write_oob_nolock(mtd, from, &ops); | |
2717 | *retlen = ops.oobretlen; | |
2718 | } | |
493c6460 KP |
2719 | |
2720 | /* Exit OTP access mode */ | |
2721 | this->command(mtd, ONENAND_CMD_RESET, 0, 0); | |
2722 | this->wait(mtd, FL_RESETING); | |
2723 | ||
2724 | return ret; | |
2725 | } | |
2726 | ||
2727 | /** | |
2728 | * onenand_otp_walk - [DEFAULT] Handle OTP operation | |
2729 | * @param mtd MTD device structure | |
2730 | * @param from The offset to read/write | |
2731 | * @param len number of bytes to read/write | |
2732 | * @param retlen pointer to variable to store the number of read bytes | |
2733 | * @param buf the databuffer to put/get data | |
2734 | * @param action do given action | |
2735 | * @param mode specify user and factory | |
2736 | * | |
2737 | * Handle OTP operation. | |
2738 | */ | |
2739 | static int onenand_otp_walk(struct mtd_info *mtd, loff_t from, size_t len, | |
2740 | size_t *retlen, u_char *buf, | |
2741 | otp_op_t action, int mode) | |
2742 | { | |
2743 | struct onenand_chip *this = mtd->priv; | |
2744 | int otp_pages; | |
2745 | int density; | |
2746 | int ret = 0; | |
2747 | ||
2748 | *retlen = 0; | |
2749 | ||
e71f04fc | 2750 | density = onenand_get_density(this->device_id); |
493c6460 KP |
2751 | if (density < ONENAND_DEVICE_DENSITY_512Mb) |
2752 | otp_pages = 20; | |
2753 | else | |
2754 | otp_pages = 10; | |
2755 | ||
2756 | if (mode == MTD_OTP_FACTORY) { | |
28318776 | 2757 | from += mtd->writesize * otp_pages; |
493c6460 KP |
2758 | otp_pages = 64 - otp_pages; |
2759 | } | |
2760 | ||
2761 | /* Check User/Factory boundary */ | |
28318776 | 2762 | if (((mtd->writesize * otp_pages) - (from + len)) < 0) |
493c6460 KP |
2763 | return 0; |
2764 | ||
49dc08ee | 2765 | onenand_get_device(mtd, FL_OTPING); |
493c6460 KP |
2766 | while (len > 0 && otp_pages > 0) { |
2767 | if (!action) { /* OTP Info functions */ | |
2768 | struct otp_info *otpinfo; | |
2769 | ||
2770 | len -= sizeof(struct otp_info); | |
49dc08ee AB |
2771 | if (len <= 0) { |
2772 | ret = -ENOSPC; | |
2773 | break; | |
2774 | } | |
493c6460 KP |
2775 | |
2776 | otpinfo = (struct otp_info *) buf; | |
2777 | otpinfo->start = from; | |
28318776 | 2778 | otpinfo->length = mtd->writesize; |
493c6460 KP |
2779 | otpinfo->locked = 0; |
2780 | ||
28318776 | 2781 | from += mtd->writesize; |
493c6460 KP |
2782 | buf += sizeof(struct otp_info); |
2783 | *retlen += sizeof(struct otp_info); | |
2784 | } else { | |
2785 | size_t tmp_retlen; | |
2786 | int size = len; | |
2787 | ||
2788 | ret = action(mtd, from, len, &tmp_retlen, buf); | |
2789 | ||
2790 | buf += size; | |
2791 | len -= size; | |
2792 | *retlen += size; | |
2793 | ||
49dc08ee AB |
2794 | if (ret) |
2795 | break; | |
493c6460 KP |
2796 | } |
2797 | otp_pages--; | |
2798 | } | |
49dc08ee | 2799 | onenand_release_device(mtd); |
493c6460 | 2800 | |
49dc08ee | 2801 | return ret; |
493c6460 KP |
2802 | } |
2803 | ||
2804 | /** | |
2805 | * onenand_get_fact_prot_info - [MTD Interface] Read factory OTP info | |
2806 | * @param mtd MTD device structure | |
2807 | * @param buf the databuffer to put/get data | |
2808 | * @param len number of bytes to read | |
2809 | * | |
2810 | * Read factory OTP info. | |
2811 | */ | |
2812 | static int onenand_get_fact_prot_info(struct mtd_info *mtd, | |
2813 | struct otp_info *buf, size_t len) | |
2814 | { | |
2815 | size_t retlen; | |
2816 | int ret; | |
2817 | ||
2818 | ret = onenand_otp_walk(mtd, 0, len, &retlen, (u_char *) buf, NULL, MTD_OTP_FACTORY); | |
2819 | ||
2820 | return ret ? : retlen; | |
2821 | } | |
2822 | ||
2823 | /** | |
2824 | * onenand_read_fact_prot_reg - [MTD Interface] Read factory OTP area | |
2825 | * @param mtd MTD device structure | |
2826 | * @param from The offset to read | |
2827 | * @param len number of bytes to read | |
2828 | * @param retlen pointer to variable to store the number of read bytes | |
2829 | * @param buf the databuffer to put/get data | |
2830 | * | |
2831 | * Read factory OTP area. | |
2832 | */ | |
2833 | static int onenand_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, | |
2834 | size_t len, size_t *retlen, u_char *buf) | |
2835 | { | |
2836 | return onenand_otp_walk(mtd, from, len, retlen, buf, do_otp_read, MTD_OTP_FACTORY); | |
2837 | } | |
2838 | ||
2839 | /** | |
2840 | * onenand_get_user_prot_info - [MTD Interface] Read user OTP info | |
2841 | * @param mtd MTD device structure | |
2842 | * @param buf the databuffer to put/get data | |
2843 | * @param len number of bytes to read | |
2844 | * | |
2845 | * Read user OTP info. | |
2846 | */ | |
2847 | static int onenand_get_user_prot_info(struct mtd_info *mtd, | |
2848 | struct otp_info *buf, size_t len) | |
2849 | { | |
2850 | size_t retlen; | |
2851 | int ret; | |
2852 | ||
2853 | ret = onenand_otp_walk(mtd, 0, len, &retlen, (u_char *) buf, NULL, MTD_OTP_USER); | |
2854 | ||
2855 | return ret ? : retlen; | |
2856 | } | |
2857 | ||
2858 | /** | |
2859 | * onenand_read_user_prot_reg - [MTD Interface] Read user OTP area | |
2860 | * @param mtd MTD device structure | |
2861 | * @param from The offset to read | |
2862 | * @param len number of bytes to read | |
2863 | * @param retlen pointer to variable to store the number of read bytes | |
2864 | * @param buf the databuffer to put/get data | |
2865 | * | |
2866 | * Read user OTP area. | |
2867 | */ | |
2868 | static int onenand_read_user_prot_reg(struct mtd_info *mtd, loff_t from, | |
2869 | size_t len, size_t *retlen, u_char *buf) | |
2870 | { | |
2871 | return onenand_otp_walk(mtd, from, len, retlen, buf, do_otp_read, MTD_OTP_USER); | |
2872 | } | |
2873 | ||
2874 | /** | |
2875 | * onenand_write_user_prot_reg - [MTD Interface] Write user OTP area | |
2876 | * @param mtd MTD device structure | |
2877 | * @param from The offset to write | |
2878 | * @param len number of bytes to write | |
2879 | * @param retlen pointer to variable to store the number of write bytes | |
2880 | * @param buf the databuffer to put/get data | |
2881 | * | |
2882 | * Write user OTP area. | |
2883 | */ | |
2884 | static int onenand_write_user_prot_reg(struct mtd_info *mtd, loff_t from, | |
2885 | size_t len, size_t *retlen, u_char *buf) | |
2886 | { | |
2887 | return onenand_otp_walk(mtd, from, len, retlen, buf, do_otp_write, MTD_OTP_USER); | |
2888 | } | |
2889 | ||
2890 | /** | |
2891 | * onenand_lock_user_prot_reg - [MTD Interface] Lock user OTP area | |
2892 | * @param mtd MTD device structure | |
2893 | * @param from The offset to lock | |
2894 | * @param len number of bytes to unlock | |
2895 | * | |
2896 | * Write lock mark on spare area in page 0 in OTP block | |
2897 | */ | |
2898 | static int onenand_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, | |
2899 | size_t len) | |
2900 | { | |
69d79186 | 2901 | struct onenand_chip *this = mtd->priv; |
5988af23 | 2902 | u_char *buf = FLEXONENAND(this) ? this->page_buf : this->oob_buf; |
493c6460 KP |
2903 | size_t retlen; |
2904 | int ret; | |
2905 | ||
5988af23 RH |
2906 | memset(buf, 0xff, FLEXONENAND(this) ? this->writesize |
2907 | : mtd->oobsize); | |
493c6460 KP |
2908 | /* |
2909 | * Note: OTP lock operation | |
2910 | * OTP block : 0xXXFC | |
2911 | * 1st block : 0xXXF3 (If chip support) | |
2912 | * Both : 0xXXF0 (If chip support) | |
2913 | */ | |
5988af23 RH |
2914 | if (FLEXONENAND(this)) |
2915 | buf[FLEXONENAND_OTP_LOCK_OFFSET] = 0xFC; | |
2916 | else | |
2917 | buf[ONENAND_OTP_LOCK_OFFSET] = 0xFC; | |
493c6460 KP |
2918 | |
2919 | /* | |
2920 | * Write lock mark to 8th word of sector0 of page0 of the spare0. | |
2921 | * We write 16 bytes spare area instead of 2 bytes. | |
5988af23 RH |
2922 | * For Flex-OneNAND, we write lock mark to 1st word of sector 4 of |
2923 | * main area of page 49. | |
493c6460 | 2924 | */ |
5988af23 | 2925 | |
493c6460 | 2926 | from = 0; |
5988af23 | 2927 | len = FLEXONENAND(this) ? mtd->writesize : 16; |
493c6460 | 2928 | |
5988af23 | 2929 | ret = onenand_otp_walk(mtd, from, len, &retlen, buf, do_otp_lock, MTD_OTP_USER); |
493c6460 KP |
2930 | |
2931 | return ret ? : retlen; | |
2932 | } | |
2933 | #endif /* CONFIG_MTD_ONENAND_OTP */ | |
2934 | ||
28b79ff9 | 2935 | /** |
75384b0d | 2936 | * onenand_check_features - Check and set OneNAND features |
28b79ff9 KP |
2937 | * @param mtd MTD data structure |
2938 | * | |
75384b0d KP |
2939 | * Check and set OneNAND features |
2940 | * - lock scheme | |
ee9745fc | 2941 | * - two plane |
28b79ff9 | 2942 | */ |
75384b0d | 2943 | static void onenand_check_features(struct mtd_info *mtd) |
28b79ff9 KP |
2944 | { |
2945 | struct onenand_chip *this = mtd->priv; | |
2946 | unsigned int density, process; | |
2947 | ||
2948 | /* Lock scheme depends on density and process */ | |
e71f04fc | 2949 | density = onenand_get_density(this->device_id); |
28b79ff9 KP |
2950 | process = this->version_id >> ONENAND_VERSION_PROCESS_SHIFT; |
2951 | ||
2952 | /* Lock scheme */ | |
ee9745fc KP |
2953 | switch (density) { |
2954 | case ONENAND_DEVICE_DENSITY_4Gb: | |
2955 | this->options |= ONENAND_HAS_2PLANE; | |
2956 | ||
2957 | case ONENAND_DEVICE_DENSITY_2Gb: | |
492e1501 | 2958 | /* 2Gb DDP does not have 2 plane */ |
ee9745fc KP |
2959 | if (!ONENAND_IS_DDP(this)) |
2960 | this->options |= ONENAND_HAS_2PLANE; | |
2961 | this->options |= ONENAND_HAS_UNLOCK_ALL; | |
2962 | ||
2963 | case ONENAND_DEVICE_DENSITY_1Gb: | |
28b79ff9 | 2964 | /* A-Die has all block unlock */ |
ee9745fc | 2965 | if (process) |
28b79ff9 | 2966 | this->options |= ONENAND_HAS_UNLOCK_ALL; |
ee9745fc KP |
2967 | break; |
2968 | ||
2969 | default: | |
2970 | /* Some OneNAND has continuous lock scheme */ | |
2971 | if (!process) | |
28b79ff9 | 2972 | this->options |= ONENAND_HAS_CONT_LOCK; |
ee9745fc | 2973 | break; |
28b79ff9 | 2974 | } |
ee9745fc | 2975 | |
5988af23 RH |
2976 | if (ONENAND_IS_MLC(this)) |
2977 | this->options &= ~ONENAND_HAS_2PLANE; | |
2978 | ||
2979 | if (FLEXONENAND(this)) { | |
2980 | this->options &= ~ONENAND_HAS_CONT_LOCK; | |
2981 | this->options |= ONENAND_HAS_UNLOCK_ALL; | |
2982 | } | |
2983 | ||
ee9745fc KP |
2984 | if (this->options & ONENAND_HAS_CONT_LOCK) |
2985 | printk(KERN_DEBUG "Lock scheme is Continuous Lock\n"); | |
2986 | if (this->options & ONENAND_HAS_UNLOCK_ALL) | |
2987 | printk(KERN_DEBUG "Chip support all block unlock\n"); | |
2988 | if (this->options & ONENAND_HAS_2PLANE) | |
2989 | printk(KERN_DEBUG "Chip has 2 plane\n"); | |
28b79ff9 KP |
2990 | } |
2991 | ||
cd5f6346 | 2992 | /** |
e3da8067 | 2993 | * onenand_print_device_info - Print device & version ID |
cd5f6346 | 2994 | * @param device device ID |
e3da8067 | 2995 | * @param version version ID |
cd5f6346 | 2996 | * |
e3da8067 | 2997 | * Print device & version ID |
cd5f6346 | 2998 | */ |
28b79ff9 | 2999 | static void onenand_print_device_info(int device, int version) |
cd5f6346 | 3000 | { |
5988af23 | 3001 | int vcc, demuxed, ddp, density, flexonenand; |
cd5f6346 KP |
3002 | |
3003 | vcc = device & ONENAND_DEVICE_VCC_MASK; | |
3004 | demuxed = device & ONENAND_DEVICE_IS_DEMUX; | |
3005 | ddp = device & ONENAND_DEVICE_IS_DDP; | |
e71f04fc | 3006 | density = onenand_get_density(device); |
5988af23 RH |
3007 | flexonenand = device & DEVICE_IS_FLEXONENAND; |
3008 | printk(KERN_INFO "%s%sOneNAND%s %dMB %sV 16-bit (0x%02x)\n", | |
3009 | demuxed ? "" : "Muxed ", | |
3010 | flexonenand ? "Flex-" : "", | |
cd5f6346 KP |
3011 | ddp ? "(DDP)" : "", |
3012 | (16 << density), | |
3013 | vcc ? "2.65/3.3" : "1.8", | |
3014 | device); | |
49dc08ee | 3015 | printk(KERN_INFO "OneNAND version = 0x%04x\n", version); |
cd5f6346 KP |
3016 | } |
3017 | ||
3018 | static const struct onenand_manufacturers onenand_manuf_ids[] = { | |
3019 | {ONENAND_MFR_SAMSUNG, "Samsung"}, | |
ee8f3768 | 3020 | {ONENAND_MFR_NUMONYX, "Numonyx"}, |
cd5f6346 KP |
3021 | }; |
3022 | ||
3023 | /** | |
3024 | * onenand_check_maf - Check manufacturer ID | |
3025 | * @param manuf manufacturer ID | |
3026 | * | |
3027 | * Check manufacturer ID | |
3028 | */ | |
3029 | static int onenand_check_maf(int manuf) | |
3030 | { | |
37b1cc39 KP |
3031 | int size = ARRAY_SIZE(onenand_manuf_ids); |
3032 | char *name; | |
cd5f6346 KP |
3033 | int i; |
3034 | ||
37b1cc39 | 3035 | for (i = 0; i < size; i++) |
cd5f6346 KP |
3036 | if (manuf == onenand_manuf_ids[i].id) |
3037 | break; | |
cd5f6346 | 3038 | |
37b1cc39 KP |
3039 | if (i < size) |
3040 | name = onenand_manuf_ids[i].name; | |
3041 | else | |
3042 | name = "Unknown"; | |
3043 | ||
3044 | printk(KERN_DEBUG "OneNAND Manufacturer: %s (0x%0x)\n", name, manuf); | |
cd5f6346 | 3045 | |
37b1cc39 | 3046 | return (i == size); |
cd5f6346 KP |
3047 | } |
3048 | ||
5988af23 RH |
3049 | /** |
3050 | * flexonenand_get_boundary - Reads the SLC boundary | |
3051 | * @param onenand_info - onenand info structure | |
3052 | **/ | |
3053 | static int flexonenand_get_boundary(struct mtd_info *mtd) | |
3054 | { | |
3055 | struct onenand_chip *this = mtd->priv; | |
3056 | unsigned die, bdry; | |
3057 | int ret, syscfg, locked; | |
3058 | ||
3059 | /* Disable ECC */ | |
3060 | syscfg = this->read_word(this->base + ONENAND_REG_SYS_CFG1); | |
3061 | this->write_word((syscfg | 0x0100), this->base + ONENAND_REG_SYS_CFG1); | |
3062 | ||
3063 | for (die = 0; die < this->dies; die++) { | |
3064 | this->command(mtd, FLEXONENAND_CMD_PI_ACCESS, die, 0); | |
3065 | this->wait(mtd, FL_SYNCING); | |
3066 | ||
3067 | this->command(mtd, FLEXONENAND_CMD_READ_PI, die, 0); | |
3068 | ret = this->wait(mtd, FL_READING); | |
3069 | ||
3070 | bdry = this->read_word(this->base + ONENAND_DATARAM); | |
3071 | if ((bdry >> FLEXONENAND_PI_UNLOCK_SHIFT) == 3) | |
3072 | locked = 0; | |
3073 | else | |
3074 | locked = 1; | |
3075 | this->boundary[die] = bdry & FLEXONENAND_PI_MASK; | |
3076 | ||
3077 | this->command(mtd, ONENAND_CMD_RESET, 0, 0); | |
3078 | ret = this->wait(mtd, FL_RESETING); | |
3079 | ||
3080 | printk(KERN_INFO "Die %d boundary: %d%s\n", die, | |
3081 | this->boundary[die], locked ? "(Locked)" : "(Unlocked)"); | |
3082 | } | |
3083 | ||
3084 | /* Enable ECC */ | |
3085 | this->write_word(syscfg, this->base + ONENAND_REG_SYS_CFG1); | |
3086 | return 0; | |
3087 | } | |
3088 | ||
3089 | /** | |
3090 | * flexonenand_get_size - Fill up fields in onenand_chip and mtd_info | |
3091 | * boundary[], diesize[], mtd->size, mtd->erasesize | |
3092 | * @param mtd - MTD device structure | |
3093 | */ | |
3094 | static void flexonenand_get_size(struct mtd_info *mtd) | |
3095 | { | |
3096 | struct onenand_chip *this = mtd->priv; | |
3097 | int die, i, eraseshift, density; | |
3098 | int blksperdie, maxbdry; | |
3099 | loff_t ofs; | |
3100 | ||
3101 | density = onenand_get_density(this->device_id); | |
3102 | blksperdie = ((loff_t)(16 << density) << 20) >> (this->erase_shift); | |
3103 | blksperdie >>= ONENAND_IS_DDP(this) ? 1 : 0; | |
3104 | maxbdry = blksperdie - 1; | |
3105 | eraseshift = this->erase_shift - 1; | |
3106 | ||
3107 | mtd->numeraseregions = this->dies << 1; | |
3108 | ||
3109 | /* This fills up the device boundary */ | |
3110 | flexonenand_get_boundary(mtd); | |
3111 | die = ofs = 0; | |
3112 | i = -1; | |
3113 | for (; die < this->dies; die++) { | |
3114 | if (!die || this->boundary[die-1] != maxbdry) { | |
3115 | i++; | |
3116 | mtd->eraseregions[i].offset = ofs; | |
3117 | mtd->eraseregions[i].erasesize = 1 << eraseshift; | |
3118 | mtd->eraseregions[i].numblocks = | |
3119 | this->boundary[die] + 1; | |
3120 | ofs += mtd->eraseregions[i].numblocks << eraseshift; | |
3121 | eraseshift++; | |
3122 | } else { | |
3123 | mtd->numeraseregions -= 1; | |
3124 | mtd->eraseregions[i].numblocks += | |
3125 | this->boundary[die] + 1; | |
3126 | ofs += (this->boundary[die] + 1) << (eraseshift - 1); | |
3127 | } | |
3128 | if (this->boundary[die] != maxbdry) { | |
3129 | i++; | |
3130 | mtd->eraseregions[i].offset = ofs; | |
3131 | mtd->eraseregions[i].erasesize = 1 << eraseshift; | |
3132 | mtd->eraseregions[i].numblocks = maxbdry ^ | |
3133 | this->boundary[die]; | |
3134 | ofs += mtd->eraseregions[i].numblocks << eraseshift; | |
3135 | eraseshift--; | |
3136 | } else | |
3137 | mtd->numeraseregions -= 1; | |
3138 | } | |
3139 | ||
3140 | /* Expose MLC erase size except when all blocks are SLC */ | |
3141 | mtd->erasesize = 1 << this->erase_shift; | |
3142 | if (mtd->numeraseregions == 1) | |
3143 | mtd->erasesize >>= 1; | |
3144 | ||
3145 | printk(KERN_INFO "Device has %d eraseregions\n", mtd->numeraseregions); | |
3146 | for (i = 0; i < mtd->numeraseregions; i++) | |
3147 | printk(KERN_INFO "[offset: 0x%08x, erasesize: 0x%05x," | |
3148 | " numblocks: %04u]\n", | |
3149 | (unsigned int) mtd->eraseregions[i].offset, | |
3150 | mtd->eraseregions[i].erasesize, | |
3151 | mtd->eraseregions[i].numblocks); | |
3152 | ||
3153 | for (die = 0, mtd->size = 0; die < this->dies; die++) { | |
3154 | this->diesize[die] = (loff_t)blksperdie << this->erase_shift; | |
3155 | this->diesize[die] -= (loff_t)(this->boundary[die] + 1) | |
3156 | << (this->erase_shift - 1); | |
3157 | mtd->size += this->diesize[die]; | |
3158 | } | |
3159 | } | |
3160 | ||
3161 | /** | |
3162 | * flexonenand_check_blocks_erased - Check if blocks are erased | |
3163 | * @param mtd_info - mtd info structure | |
3164 | * @param start - first erase block to check | |
3165 | * @param end - last erase block to check | |
3166 | * | |
3167 | * Converting an unerased block from MLC to SLC | |
3168 | * causes byte values to change. Since both data and its ECC | |
3169 | * have changed, reads on the block give uncorrectable error. | |
3170 | * This might lead to the block being detected as bad. | |
3171 | * | |
3172 | * Avoid this by ensuring that the block to be converted is | |
3173 | * erased. | |
3174 | */ | |
3175 | static int flexonenand_check_blocks_erased(struct mtd_info *mtd, int start, int end) | |
3176 | { | |
3177 | struct onenand_chip *this = mtd->priv; | |
3178 | int i, ret; | |
3179 | int block; | |
3180 | struct mtd_oob_ops ops = { | |
3181 | .mode = MTD_OOB_PLACE, | |
3182 | .ooboffs = 0, | |
3183 | .ooblen = mtd->oobsize, | |
3184 | .datbuf = NULL, | |
3185 | .oobbuf = this->oob_buf, | |
3186 | }; | |
3187 | loff_t addr; | |
3188 | ||
3189 | printk(KERN_DEBUG "Check blocks from %d to %d\n", start, end); | |
3190 | ||
3191 | for (block = start; block <= end; block++) { | |
3192 | addr = flexonenand_addr(this, block); | |
3193 | if (onenand_block_isbad_nolock(mtd, addr, 0)) | |
3194 | continue; | |
3195 | ||
3196 | /* | |
3197 | * Since main area write results in ECC write to spare, | |
3198 | * it is sufficient to check only ECC bytes for change. | |
3199 | */ | |
3200 | ret = onenand_read_oob_nolock(mtd, addr, &ops); | |
3201 | if (ret) | |
3202 | return ret; | |
3203 | ||
3204 | for (i = 0; i < mtd->oobsize; i++) | |
3205 | if (this->oob_buf[i] != 0xff) | |
3206 | break; | |
3207 | ||
3208 | if (i != mtd->oobsize) { | |
297758f8 AKS |
3209 | printk(KERN_WARNING "%s: Block %d not erased.\n", |
3210 | __func__, block); | |
5988af23 RH |
3211 | return 1; |
3212 | } | |
3213 | } | |
3214 | ||
3215 | return 0; | |
3216 | } | |
3217 | ||
3218 | /** | |
3219 | * flexonenand_set_boundary - Writes the SLC boundary | |
3220 | * @param mtd - mtd info structure | |
3221 | */ | |
3222 | int flexonenand_set_boundary(struct mtd_info *mtd, int die, | |
3223 | int boundary, int lock) | |
3224 | { | |
3225 | struct onenand_chip *this = mtd->priv; | |
3226 | int ret, density, blksperdie, old, new, thisboundary; | |
3227 | loff_t addr; | |
3228 | ||
3229 | /* Change only once for SDP Flex-OneNAND */ | |
3230 | if (die && (!ONENAND_IS_DDP(this))) | |
3231 | return 0; | |
3232 | ||
3233 | /* boundary value of -1 indicates no required change */ | |
3234 | if (boundary < 0 || boundary == this->boundary[die]) | |
3235 | return 0; | |
3236 | ||
3237 | density = onenand_get_density(this->device_id); | |
3238 | blksperdie = ((16 << density) << 20) >> this->erase_shift; | |
3239 | blksperdie >>= ONENAND_IS_DDP(this) ? 1 : 0; | |
3240 | ||
3241 | if (boundary >= blksperdie) { | |
297758f8 AKS |
3242 | printk(KERN_ERR "%s: Invalid boundary value. " |
3243 | "Boundary not changed.\n", __func__); | |
5988af23 RH |
3244 | return -EINVAL; |
3245 | } | |
3246 | ||
3247 | /* Check if converting blocks are erased */ | |
3248 | old = this->boundary[die] + (die * this->density_mask); | |
3249 | new = boundary + (die * this->density_mask); | |
3250 | ret = flexonenand_check_blocks_erased(mtd, min(old, new) + 1, max(old, new)); | |
3251 | if (ret) { | |
297758f8 AKS |
3252 | printk(KERN_ERR "%s: Please erase blocks " |
3253 | "before boundary change\n", __func__); | |
5988af23 RH |
3254 | return ret; |
3255 | } | |
3256 | ||
3257 | this->command(mtd, FLEXONENAND_CMD_PI_ACCESS, die, 0); | |
3258 | this->wait(mtd, FL_SYNCING); | |
3259 | ||
3260 | /* Check is boundary is locked */ | |
3261 | this->command(mtd, FLEXONENAND_CMD_READ_PI, die, 0); | |
3262 | ret = this->wait(mtd, FL_READING); | |
3263 | ||
3264 | thisboundary = this->read_word(this->base + ONENAND_DATARAM); | |
3265 | if ((thisboundary >> FLEXONENAND_PI_UNLOCK_SHIFT) != 3) { | |
297758f8 | 3266 | printk(KERN_ERR "%s: boundary locked\n", __func__); |
5988af23 RH |
3267 | ret = 1; |
3268 | goto out; | |
3269 | } | |
3270 | ||
297758f8 | 3271 | printk(KERN_INFO "Changing die %d boundary: %d%s\n", |
5988af23 RH |
3272 | die, boundary, lock ? "(Locked)" : "(Unlocked)"); |
3273 | ||
3274 | addr = die ? this->diesize[0] : 0; | |
3275 | ||
3276 | boundary &= FLEXONENAND_PI_MASK; | |
3277 | boundary |= lock ? 0 : (3 << FLEXONENAND_PI_UNLOCK_SHIFT); | |
3278 | ||
3279 | this->command(mtd, ONENAND_CMD_ERASE, addr, 0); | |
3280 | ret = this->wait(mtd, FL_ERASING); | |
3281 | if (ret) { | |
297758f8 AKS |
3282 | printk(KERN_ERR "%s: flexonenand_set_boundary: " |
3283 | "Failed PI erase for Die %d\n", __func__, die); | |
5988af23 RH |
3284 | goto out; |
3285 | } | |
3286 | ||
3287 | this->write_word(boundary, this->base + ONENAND_DATARAM); | |
3288 | this->command(mtd, ONENAND_CMD_PROG, addr, 0); | |
3289 | ret = this->wait(mtd, FL_WRITING); | |
3290 | if (ret) { | |
297758f8 AKS |
3291 | printk(KERN_ERR "%s: Failed PI write for Die %d\n", |
3292 | __func__, die); | |
5988af23 RH |
3293 | goto out; |
3294 | } | |
3295 | ||
3296 | this->command(mtd, FLEXONENAND_CMD_PI_UPDATE, die, 0); | |
3297 | ret = this->wait(mtd, FL_WRITING); | |
3298 | out: | |
3299 | this->write_word(ONENAND_CMD_RESET, this->base + ONENAND_REG_COMMAND); | |
3300 | this->wait(mtd, FL_RESETING); | |
3301 | if (!ret) | |
3302 | /* Recalculate device size on boundary change*/ | |
3303 | flexonenand_get_size(mtd); | |
3304 | ||
3305 | return ret; | |
3306 | } | |
3307 | ||
cd5f6346 KP |
3308 | /** |
3309 | * onenand_probe - [OneNAND Interface] Probe the OneNAND device | |
3310 | * @param mtd MTD device structure | |
3311 | * | |
3312 | * OneNAND detection method: | |
59c51591 | 3313 | * Compare the values from command with ones from register |
cd5f6346 KP |
3314 | */ |
3315 | static int onenand_probe(struct mtd_info *mtd) | |
3316 | { | |
3317 | struct onenand_chip *this = mtd->priv; | |
28b79ff9 | 3318 | int bram_maf_id, bram_dev_id, maf_id, dev_id, ver_id; |
cd5f6346 | 3319 | int density; |
47e777e0 KP |
3320 | int syscfg; |
3321 | ||
3322 | /* Save system configuration 1 */ | |
3323 | syscfg = this->read_word(this->base + ONENAND_REG_SYS_CFG1); | |
3324 | /* Clear Sync. Burst Read mode to read BootRAM */ | |
ee8f3768 | 3325 | this->write_word((syscfg & ~ONENAND_SYS_CFG1_SYNC_READ & ~ONENAND_SYS_CFG1_SYNC_WRITE), this->base + ONENAND_REG_SYS_CFG1); |
cd5f6346 KP |
3326 | |
3327 | /* Send the command for reading device ID from BootRAM */ | |
3328 | this->write_word(ONENAND_CMD_READID, this->base + ONENAND_BOOTRAM); | |
3329 | ||
3330 | /* Read manufacturer and device IDs from BootRAM */ | |
3331 | bram_maf_id = this->read_word(this->base + ONENAND_BOOTRAM + 0x0); | |
3332 | bram_dev_id = this->read_word(this->base + ONENAND_BOOTRAM + 0x2); | |
3333 | ||
47e777e0 KP |
3334 | /* Reset OneNAND to read default register values */ |
3335 | this->write_word(ONENAND_CMD_RESET, this->base + ONENAND_BOOTRAM); | |
3336 | /* Wait reset */ | |
3337 | this->wait(mtd, FL_RESETING); | |
3338 | ||
3339 | /* Restore system configuration 1 */ | |
3340 | this->write_word(syscfg, this->base + ONENAND_REG_SYS_CFG1); | |
3341 | ||
cd5f6346 KP |
3342 | /* Check manufacturer ID */ |
3343 | if (onenand_check_maf(bram_maf_id)) | |
3344 | return -ENXIO; | |
3345 | ||
cd5f6346 KP |
3346 | /* Read manufacturer and device IDs from Register */ |
3347 | maf_id = this->read_word(this->base + ONENAND_REG_MANUFACTURER_ID); | |
3348 | dev_id = this->read_word(this->base + ONENAND_REG_DEVICE_ID); | |
f4f91ac3 | 3349 | ver_id = this->read_word(this->base + ONENAND_REG_VERSION_ID); |
5988af23 | 3350 | this->technology = this->read_word(this->base + ONENAND_REG_TECHNOLOGY); |
cd5f6346 KP |
3351 | |
3352 | /* Check OneNAND device */ | |
3353 | if (maf_id != bram_maf_id || dev_id != bram_dev_id) | |
3354 | return -ENXIO; | |
3355 | ||
3356 | /* Flash device information */ | |
28b79ff9 | 3357 | onenand_print_device_info(dev_id, ver_id); |
cd5f6346 | 3358 | this->device_id = dev_id; |
28b79ff9 | 3359 | this->version_id = ver_id; |
cd5f6346 | 3360 | |
e71f04fc | 3361 | density = onenand_get_density(dev_id); |
5988af23 RH |
3362 | if (FLEXONENAND(this)) { |
3363 | this->dies = ONENAND_IS_DDP(this) ? 2 : 1; | |
3364 | /* Maximum possible erase regions */ | |
3365 | mtd->numeraseregions = this->dies << 1; | |
3366 | mtd->eraseregions = kzalloc(sizeof(struct mtd_erase_region_info) | |
3367 | * (this->dies << 1), GFP_KERNEL); | |
3368 | if (!mtd->eraseregions) | |
3369 | return -ENOMEM; | |
3370 | } | |
3371 | ||
3372 | /* | |
3373 | * For Flex-OneNAND, chipsize represents maximum possible device size. | |
3374 | * mtd->size represents the actual device size. | |
3375 | */ | |
cd5f6346 KP |
3376 | this->chipsize = (16 << density) << 20; |
3377 | ||
3378 | /* OneNAND page size & block size */ | |
3379 | /* The data buffer size is equal to page size */ | |
28318776 | 3380 | mtd->writesize = this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE); |
5988af23 RH |
3381 | /* We use the full BufferRAM */ |
3382 | if (ONENAND_IS_MLC(this)) | |
3383 | mtd->writesize <<= 1; | |
3384 | ||
28318776 | 3385 | mtd->oobsize = mtd->writesize >> 5; |
9bfbc9b2 | 3386 | /* Pages per a block are always 64 in OneNAND */ |
28318776 | 3387 | mtd->erasesize = mtd->writesize << 6; |
5988af23 RH |
3388 | /* |
3389 | * Flex-OneNAND SLC area has 64 pages per block. | |
3390 | * Flex-OneNAND MLC area has 128 pages per block. | |
3391 | * Expose MLC erase size to find erase_shift and page_mask. | |
3392 | */ | |
3393 | if (FLEXONENAND(this)) | |
3394 | mtd->erasesize <<= 1; | |
cd5f6346 KP |
3395 | |
3396 | this->erase_shift = ffs(mtd->erasesize) - 1; | |
28318776 | 3397 | this->page_shift = ffs(mtd->writesize) - 1; |
9bfbc9b2 | 3398 | this->page_mask = (1 << (this->erase_shift - this->page_shift)) - 1; |
5988af23 RH |
3399 | /* Set density mask. it is used for DDP */ |
3400 | if (ONENAND_IS_DDP(this)) | |
3401 | this->density_mask = this->chipsize >> (this->erase_shift + 1); | |
ee9745fc KP |
3402 | /* It's real page size */ |
3403 | this->writesize = mtd->writesize; | |
cd5f6346 | 3404 | |
492e1501 | 3405 | /* REVISIT: Multichip handling */ |
cd5f6346 | 3406 | |
5988af23 RH |
3407 | if (FLEXONENAND(this)) |
3408 | flexonenand_get_size(mtd); | |
3409 | else | |
3410 | mtd->size = this->chipsize; | |
cd5f6346 | 3411 | |
75384b0d KP |
3412 | /* Check OneNAND features */ |
3413 | onenand_check_features(mtd); | |
d5c5e78a | 3414 | |
ee9745fc KP |
3415 | /* |
3416 | * We emulate the 4KiB page and 256KiB erase block size | |
3417 | * But oobsize is still 64 bytes. | |
3418 | * It is only valid if you turn on 2X program support, | |
3419 | * Otherwise it will be ignored by compiler. | |
3420 | */ | |
3421 | if (ONENAND_IS_2PLANE(this)) { | |
3422 | mtd->writesize <<= 1; | |
3423 | mtd->erasesize <<= 1; | |
3424 | } | |
3425 | ||
cd5f6346 KP |
3426 | return 0; |
3427 | } | |
3428 | ||
a41371eb KP |
3429 | /** |
3430 | * onenand_suspend - [MTD Interface] Suspend the OneNAND flash | |
3431 | * @param mtd MTD device structure | |
3432 | */ | |
3433 | static int onenand_suspend(struct mtd_info *mtd) | |
3434 | { | |
3435 | return onenand_get_device(mtd, FL_PM_SUSPENDED); | |
3436 | } | |
3437 | ||
3438 | /** | |
3439 | * onenand_resume - [MTD Interface] Resume the OneNAND flash | |
3440 | * @param mtd MTD device structure | |
3441 | */ | |
3442 | static void onenand_resume(struct mtd_info *mtd) | |
3443 | { | |
3444 | struct onenand_chip *this = mtd->priv; | |
3445 | ||
3446 | if (this->state == FL_PM_SUSPENDED) | |
3447 | onenand_release_device(mtd); | |
3448 | else | |
297758f8 AKS |
3449 | printk(KERN_ERR "%s: resume() called for the chip which is not " |
3450 | "in suspended state\n", __func__); | |
a41371eb KP |
3451 | } |
3452 | ||
cd5f6346 KP |
3453 | /** |
3454 | * onenand_scan - [OneNAND Interface] Scan for the OneNAND device | |
3455 | * @param mtd MTD device structure | |
3456 | * @param maxchips Number of chips to scan for | |
3457 | * | |
3458 | * This fills out all the not initialized function pointers | |
3459 | * with the defaults. | |
3460 | * The flash ID is read and the mtd/chip structures are | |
3461 | * filled with the appropriate values. | |
3462 | */ | |
3463 | int onenand_scan(struct mtd_info *mtd, int maxchips) | |
3464 | { | |
5988af23 | 3465 | int i, ret; |
cd5f6346 KP |
3466 | struct onenand_chip *this = mtd->priv; |
3467 | ||
3468 | if (!this->read_word) | |
3469 | this->read_word = onenand_readw; | |
3470 | if (!this->write_word) | |
3471 | this->write_word = onenand_writew; | |
3472 | ||
3473 | if (!this->command) | |
3474 | this->command = onenand_command; | |
3475 | if (!this->wait) | |
2c22120f | 3476 | onenand_setup_wait(mtd); |
31bb999e KP |
3477 | if (!this->bbt_wait) |
3478 | this->bbt_wait = onenand_bbt_wait; | |
3479 | if (!this->unlock_all) | |
3480 | this->unlock_all = onenand_unlock_all; | |
cd5f6346 KP |
3481 | |
3482 | if (!this->read_bufferram) | |
3483 | this->read_bufferram = onenand_read_bufferram; | |
3484 | if (!this->write_bufferram) | |
3485 | this->write_bufferram = onenand_write_bufferram; | |
3486 | ||
cdc00130 KP |
3487 | if (!this->block_markbad) |
3488 | this->block_markbad = onenand_default_block_markbad; | |
3489 | if (!this->scan_bbt) | |
3490 | this->scan_bbt = onenand_default_bbt; | |
3491 | ||
cd5f6346 KP |
3492 | if (onenand_probe(mtd)) |
3493 | return -ENXIO; | |
3494 | ||
52b0eea7 KP |
3495 | /* Set Sync. Burst Read after probing */ |
3496 | if (this->mmcontrol) { | |
3497 | printk(KERN_INFO "OneNAND Sync. Burst Read support\n"); | |
3498 | this->read_bufferram = onenand_sync_read_bufferram; | |
3499 | } | |
3500 | ||
532a37cf KP |
3501 | /* Allocate buffers, if necessary */ |
3502 | if (!this->page_buf) { | |
470bc844 | 3503 | this->page_buf = kzalloc(mtd->writesize, GFP_KERNEL); |
532a37cf | 3504 | if (!this->page_buf) { |
297758f8 AKS |
3505 | printk(KERN_ERR "%s: Can't allocate page_buf\n", |
3506 | __func__); | |
532a37cf KP |
3507 | return -ENOMEM; |
3508 | } | |
3509 | this->options |= ONENAND_PAGEBUF_ALLOC; | |
3510 | } | |
470bc844 KP |
3511 | if (!this->oob_buf) { |
3512 | this->oob_buf = kzalloc(mtd->oobsize, GFP_KERNEL); | |
3513 | if (!this->oob_buf) { | |
297758f8 AKS |
3514 | printk(KERN_ERR "%s: Can't allocate oob_buf\n", |
3515 | __func__); | |
470bc844 KP |
3516 | if (this->options & ONENAND_PAGEBUF_ALLOC) { |
3517 | this->options &= ~ONENAND_PAGEBUF_ALLOC; | |
3518 | kfree(this->page_buf); | |
3519 | } | |
3520 | return -ENOMEM; | |
3521 | } | |
3522 | this->options |= ONENAND_OOBBUF_ALLOC; | |
3523 | } | |
532a37cf | 3524 | |
cd5f6346 KP |
3525 | this->state = FL_READY; |
3526 | init_waitqueue_head(&this->wq); | |
3527 | spin_lock_init(&this->chip_lock); | |
3528 | ||
60d84f97 KP |
3529 | /* |
3530 | * Allow subpage writes up to oobsize. | |
3531 | */ | |
cd5f6346 | 3532 | switch (mtd->oobsize) { |
5988af23 RH |
3533 | case 128: |
3534 | this->ecclayout = &onenand_oob_128; | |
3535 | mtd->subpage_sft = 0; | |
3536 | break; | |
cd5f6346 | 3537 | case 64: |
5bd34c09 | 3538 | this->ecclayout = &onenand_oob_64; |
60d84f97 | 3539 | mtd->subpage_sft = 2; |
cd5f6346 KP |
3540 | break; |
3541 | ||
3542 | case 32: | |
5bd34c09 | 3543 | this->ecclayout = &onenand_oob_32; |
60d84f97 | 3544 | mtd->subpage_sft = 1; |
cd5f6346 KP |
3545 | break; |
3546 | ||
3547 | default: | |
297758f8 AKS |
3548 | printk(KERN_WARNING "%s: No OOB scheme defined for oobsize %d\n", |
3549 | __func__, mtd->oobsize); | |
60d84f97 | 3550 | mtd->subpage_sft = 0; |
cd5f6346 | 3551 | /* To prevent kernel oops */ |
5bd34c09 | 3552 | this->ecclayout = &onenand_oob_32; |
cd5f6346 KP |
3553 | break; |
3554 | } | |
3555 | ||
60d84f97 | 3556 | this->subpagesize = mtd->writesize >> mtd->subpage_sft; |
a5e7c7b4 AH |
3557 | |
3558 | /* | |
3559 | * The number of bytes available for a client to place data into | |
3560 | * the out of band area | |
3561 | */ | |
3562 | this->ecclayout->oobavail = 0; | |
ad286343 KP |
3563 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && |
3564 | this->ecclayout->oobfree[i].length; i++) | |
a5e7c7b4 AH |
3565 | this->ecclayout->oobavail += |
3566 | this->ecclayout->oobfree[i].length; | |
1f92267c | 3567 | mtd->oobavail = this->ecclayout->oobavail; |
a5e7c7b4 | 3568 | |
5bd34c09 | 3569 | mtd->ecclayout = this->ecclayout; |
d5c5e78a | 3570 | |
cd5f6346 KP |
3571 | /* Fill in remaining MTD driver data */ |
3572 | mtd->type = MTD_NANDFLASH; | |
5fa43394 | 3573 | mtd->flags = MTD_CAP_NANDFLASH; |
cd5f6346 KP |
3574 | mtd->erase = onenand_erase; |
3575 | mtd->point = NULL; | |
3576 | mtd->unpoint = NULL; | |
3577 | mtd->read = onenand_read; | |
3578 | mtd->write = onenand_write; | |
cd5f6346 KP |
3579 | mtd->read_oob = onenand_read_oob; |
3580 | mtd->write_oob = onenand_write_oob; | |
6c77fd64 | 3581 | mtd->panic_write = onenand_panic_write; |
493c6460 KP |
3582 | #ifdef CONFIG_MTD_ONENAND_OTP |
3583 | mtd->get_fact_prot_info = onenand_get_fact_prot_info; | |
3584 | mtd->read_fact_prot_reg = onenand_read_fact_prot_reg; | |
3585 | mtd->get_user_prot_info = onenand_get_user_prot_info; | |
3586 | mtd->read_user_prot_reg = onenand_read_user_prot_reg; | |
3587 | mtd->write_user_prot_reg = onenand_write_user_prot_reg; | |
3588 | mtd->lock_user_prot_reg = onenand_lock_user_prot_reg; | |
3589 | #endif | |
cd5f6346 | 3590 | mtd->sync = onenand_sync; |
08f782b6 | 3591 | mtd->lock = onenand_lock; |
cd5f6346 | 3592 | mtd->unlock = onenand_unlock; |
a41371eb KP |
3593 | mtd->suspend = onenand_suspend; |
3594 | mtd->resume = onenand_resume; | |
cd5f6346 KP |
3595 | mtd->block_isbad = onenand_block_isbad; |
3596 | mtd->block_markbad = onenand_block_markbad; | |
3597 | mtd->owner = THIS_MODULE; | |
3598 | ||
3599 | /* Unlock whole block */ | |
31bb999e | 3600 | this->unlock_all(mtd); |
cd5f6346 | 3601 | |
5988af23 RH |
3602 | ret = this->scan_bbt(mtd); |
3603 | if ((!FLEXONENAND(this)) || ret) | |
3604 | return ret; | |
3605 | ||
3606 | /* Change Flex-OneNAND boundaries if required */ | |
3607 | for (i = 0; i < MAX_DIES; i++) | |
3608 | flexonenand_set_boundary(mtd, i, flex_bdry[2 * i], | |
3609 | flex_bdry[(2 * i) + 1]); | |
3610 | ||
3611 | return 0; | |
cd5f6346 KP |
3612 | } |
3613 | ||
3614 | /** | |
3615 | * onenand_release - [OneNAND Interface] Free resources held by the OneNAND device | |
3616 | * @param mtd MTD device structure | |
3617 | */ | |
3618 | void onenand_release(struct mtd_info *mtd) | |
3619 | { | |
532a37cf KP |
3620 | struct onenand_chip *this = mtd->priv; |
3621 | ||
cd5f6346 KP |
3622 | #ifdef CONFIG_MTD_PARTITIONS |
3623 | /* Deregister partitions */ | |
3624 | del_mtd_partitions (mtd); | |
3625 | #endif | |
3626 | /* Deregister the device */ | |
3627 | del_mtd_device (mtd); | |
532a37cf KP |
3628 | |
3629 | /* Free bad block table memory, if allocated */ | |
f00b0046 AH |
3630 | if (this->bbm) { |
3631 | struct bbm_info *bbm = this->bbm; | |
3632 | kfree(bbm->bbt); | |
532a37cf | 3633 | kfree(this->bbm); |
f00b0046 | 3634 | } |
470bc844 | 3635 | /* Buffers allocated by onenand_scan */ |
532a37cf KP |
3636 | if (this->options & ONENAND_PAGEBUF_ALLOC) |
3637 | kfree(this->page_buf); | |
470bc844 KP |
3638 | if (this->options & ONENAND_OOBBUF_ALLOC) |
3639 | kfree(this->oob_buf); | |
5988af23 | 3640 | kfree(mtd->eraseregions); |
cd5f6346 KP |
3641 | } |
3642 | ||
3643 | EXPORT_SYMBOL_GPL(onenand_scan); | |
3644 | EXPORT_SYMBOL_GPL(onenand_release); | |
3645 | ||
3646 | MODULE_LICENSE("GPL"); | |
3647 | MODULE_AUTHOR("Kyungmin Park <kyungmin.park@samsung.com>"); | |
3648 | MODULE_DESCRIPTION("Generic OneNAND flash driver code"); |