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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 | * | |
cd5f6346 KP |
12 | * This program is free software; you can redistribute it and/or modify |
13 | * it under the terms of the GNU General Public License version 2 as | |
14 | * published by the Free Software Foundation. | |
15 | */ | |
16 | ||
17 | #include <linux/kernel.h> | |
18 | #include <linux/module.h> | |
19 | #include <linux/init.h> | |
015953d7 | 20 | #include <linux/sched.h> |
6c77fd64 | 21 | #include <linux/delay.h> |
2c22120f | 22 | #include <linux/interrupt.h> |
015953d7 | 23 | #include <linux/jiffies.h> |
cd5f6346 KP |
24 | #include <linux/mtd/mtd.h> |
25 | #include <linux/mtd/onenand.h> | |
26 | #include <linux/mtd/partitions.h> | |
27 | ||
28 | #include <asm/io.h> | |
29 | ||
30 | /** | |
31 | * onenand_oob_64 - oob info for large (2KB) page | |
32 | */ | |
5bd34c09 | 33 | static struct nand_ecclayout onenand_oob_64 = { |
cd5f6346 KP |
34 | .eccbytes = 20, |
35 | .eccpos = { | |
36 | 8, 9, 10, 11, 12, | |
37 | 24, 25, 26, 27, 28, | |
38 | 40, 41, 42, 43, 44, | |
39 | 56, 57, 58, 59, 60, | |
40 | }, | |
41 | .oobfree = { | |
42 | {2, 3}, {14, 2}, {18, 3}, {30, 2}, | |
d9777f1c JL |
43 | {34, 3}, {46, 2}, {50, 3}, {62, 2} |
44 | } | |
cd5f6346 KP |
45 | }; |
46 | ||
47 | /** | |
48 | * onenand_oob_32 - oob info for middle (1KB) page | |
49 | */ | |
5bd34c09 | 50 | static struct nand_ecclayout onenand_oob_32 = { |
cd5f6346 KP |
51 | .eccbytes = 10, |
52 | .eccpos = { | |
53 | 8, 9, 10, 11, 12, | |
54 | 24, 25, 26, 27, 28, | |
55 | }, | |
56 | .oobfree = { {2, 3}, {14, 2}, {18, 3}, {30, 2} } | |
57 | }; | |
58 | ||
59 | static const unsigned char ffchars[] = { | |
60 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
61 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 16 */ | |
62 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
63 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 32 */ | |
64 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
65 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 48 */ | |
66 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, | |
67 | 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* 64 */ | |
68 | }; | |
69 | ||
70 | /** | |
71 | * onenand_readw - [OneNAND Interface] Read OneNAND register | |
72 | * @param addr address to read | |
73 | * | |
74 | * Read OneNAND register | |
75 | */ | |
76 | static unsigned short onenand_readw(void __iomem *addr) | |
77 | { | |
78 | return readw(addr); | |
79 | } | |
80 | ||
81 | /** | |
82 | * onenand_writew - [OneNAND Interface] Write OneNAND register with value | |
83 | * @param value value to write | |
84 | * @param addr address to write | |
85 | * | |
86 | * Write OneNAND register with value | |
87 | */ | |
88 | static void onenand_writew(unsigned short value, void __iomem *addr) | |
89 | { | |
90 | writew(value, addr); | |
91 | } | |
92 | ||
93 | /** | |
94 | * onenand_block_address - [DEFAULT] Get block address | |
83a36838 | 95 | * @param this onenand chip data structure |
cd5f6346 KP |
96 | * @param block the block |
97 | * @return translated block address if DDP, otherwise same | |
98 | * | |
99 | * Setup Start Address 1 Register (F100h) | |
100 | */ | |
83a36838 | 101 | static int onenand_block_address(struct onenand_chip *this, int block) |
cd5f6346 | 102 | { |
738d61f5 KP |
103 | /* Device Flash Core select, NAND Flash Block Address */ |
104 | if (block & this->density_mask) | |
105 | return ONENAND_DDP_CHIP1 | (block ^ this->density_mask); | |
cd5f6346 KP |
106 | |
107 | return block; | |
108 | } | |
109 | ||
110 | /** | |
111 | * onenand_bufferram_address - [DEFAULT] Get bufferram address | |
83a36838 | 112 | * @param this onenand chip data structure |
cd5f6346 KP |
113 | * @param block the block |
114 | * @return set DBS value if DDP, otherwise 0 | |
115 | * | |
116 | * Setup Start Address 2 Register (F101h) for DDP | |
117 | */ | |
83a36838 | 118 | static int onenand_bufferram_address(struct onenand_chip *this, int block) |
cd5f6346 | 119 | { |
738d61f5 KP |
120 | /* Device BufferRAM Select */ |
121 | if (block & this->density_mask) | |
122 | return ONENAND_DDP_CHIP1; | |
cd5f6346 | 123 | |
738d61f5 | 124 | return ONENAND_DDP_CHIP0; |
cd5f6346 KP |
125 | } |
126 | ||
127 | /** | |
128 | * onenand_page_address - [DEFAULT] Get page address | |
129 | * @param page the page address | |
130 | * @param sector the sector address | |
131 | * @return combined page and sector address | |
132 | * | |
133 | * Setup Start Address 8 Register (F107h) | |
134 | */ | |
135 | static int onenand_page_address(int page, int sector) | |
136 | { | |
137 | /* Flash Page Address, Flash Sector Address */ | |
138 | int fpa, fsa; | |
139 | ||
140 | fpa = page & ONENAND_FPA_MASK; | |
141 | fsa = sector & ONENAND_FSA_MASK; | |
142 | ||
143 | return ((fpa << ONENAND_FPA_SHIFT) | fsa); | |
144 | } | |
145 | ||
146 | /** | |
147 | * onenand_buffer_address - [DEFAULT] Get buffer address | |
148 | * @param dataram1 DataRAM index | |
149 | * @param sectors the sector address | |
150 | * @param count the number of sectors | |
151 | * @return the start buffer value | |
152 | * | |
153 | * Setup Start Buffer Register (F200h) | |
154 | */ | |
155 | static int onenand_buffer_address(int dataram1, int sectors, int count) | |
156 | { | |
157 | int bsa, bsc; | |
158 | ||
159 | /* BufferRAM Sector Address */ | |
160 | bsa = sectors & ONENAND_BSA_MASK; | |
161 | ||
162 | if (dataram1) | |
163 | bsa |= ONENAND_BSA_DATARAM1; /* DataRAM1 */ | |
164 | else | |
165 | bsa |= ONENAND_BSA_DATARAM0; /* DataRAM0 */ | |
166 | ||
167 | /* BufferRAM Sector Count */ | |
168 | bsc = count & ONENAND_BSC_MASK; | |
169 | ||
170 | return ((bsa << ONENAND_BSA_SHIFT) | bsc); | |
171 | } | |
172 | ||
e71f04fc KP |
173 | /** |
174 | * onenand_get_density - [DEFAULT] Get OneNAND density | |
175 | * @param dev_id OneNAND device ID | |
176 | * | |
177 | * Get OneNAND density from device ID | |
178 | */ | |
179 | static inline int onenand_get_density(int dev_id) | |
180 | { | |
181 | int density = dev_id >> ONENAND_DEVICE_DENSITY_SHIFT; | |
182 | return (density & ONENAND_DEVICE_DENSITY_MASK); | |
183 | } | |
184 | ||
cd5f6346 KP |
185 | /** |
186 | * onenand_command - [DEFAULT] Send command to OneNAND device | |
187 | * @param mtd MTD device structure | |
188 | * @param cmd the command to be sent | |
189 | * @param addr offset to read from or write to | |
190 | * @param len number of bytes to read or write | |
191 | * | |
192 | * Send command to OneNAND device. This function is used for middle/large page | |
193 | * devices (1KB/2KB Bytes per page) | |
194 | */ | |
195 | static int onenand_command(struct mtd_info *mtd, int cmd, loff_t addr, size_t len) | |
196 | { | |
197 | struct onenand_chip *this = mtd->priv; | |
b21b72cf | 198 | int value, block, page; |
cd5f6346 KP |
199 | |
200 | /* Address translation */ | |
201 | switch (cmd) { | |
202 | case ONENAND_CMD_UNLOCK: | |
203 | case ONENAND_CMD_LOCK: | |
204 | case ONENAND_CMD_LOCK_TIGHT: | |
28b79ff9 | 205 | case ONENAND_CMD_UNLOCK_ALL: |
cd5f6346 KP |
206 | block = -1; |
207 | page = -1; | |
208 | break; | |
209 | ||
210 | case ONENAND_CMD_ERASE: | |
211 | case ONENAND_CMD_BUFFERRAM: | |
493c6460 | 212 | case ONENAND_CMD_OTP_ACCESS: |
cd5f6346 KP |
213 | block = (int) (addr >> this->erase_shift); |
214 | page = -1; | |
215 | break; | |
216 | ||
217 | default: | |
218 | block = (int) (addr >> this->erase_shift); | |
219 | page = (int) (addr >> this->page_shift); | |
ee9745fc KP |
220 | |
221 | if (ONENAND_IS_2PLANE(this)) { | |
222 | /* Make the even block number */ | |
223 | block &= ~1; | |
224 | /* Is it the odd plane? */ | |
225 | if (addr & this->writesize) | |
226 | block++; | |
227 | page >>= 1; | |
228 | } | |
cd5f6346 KP |
229 | page &= this->page_mask; |
230 | break; | |
231 | } | |
232 | ||
233 | /* NOTE: The setting order of the registers is very important! */ | |
234 | if (cmd == ONENAND_CMD_BUFFERRAM) { | |
235 | /* Select DataRAM for DDP */ | |
83a36838 | 236 | value = onenand_bufferram_address(this, block); |
cd5f6346 KP |
237 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); |
238 | ||
ee9745fc KP |
239 | if (ONENAND_IS_2PLANE(this)) |
240 | /* It is always BufferRAM0 */ | |
241 | ONENAND_SET_BUFFERRAM0(this); | |
242 | else | |
243 | /* Switch to the next data buffer */ | |
244 | ONENAND_SET_NEXT_BUFFERRAM(this); | |
cd5f6346 KP |
245 | |
246 | return 0; | |
247 | } | |
248 | ||
249 | if (block != -1) { | |
250 | /* Write 'DFS, FBA' of Flash */ | |
83a36838 | 251 | value = onenand_block_address(this, block); |
cd5f6346 | 252 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1); |
3cecf69e | 253 | |
b21b72cf KP |
254 | /* Select DataRAM for DDP */ |
255 | value = onenand_bufferram_address(this, block); | |
256 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); | |
cd5f6346 KP |
257 | } |
258 | ||
259 | if (page != -1) { | |
60d84f97 KP |
260 | /* Now we use page size operation */ |
261 | int sectors = 4, count = 4; | |
cd5f6346 KP |
262 | int dataram; |
263 | ||
264 | switch (cmd) { | |
265 | case ONENAND_CMD_READ: | |
266 | case ONENAND_CMD_READOOB: | |
267 | dataram = ONENAND_SET_NEXT_BUFFERRAM(this); | |
cd5f6346 KP |
268 | break; |
269 | ||
270 | default: | |
ee9745fc KP |
271 | if (ONENAND_IS_2PLANE(this) && cmd == ONENAND_CMD_PROG) |
272 | cmd = ONENAND_CMD_2X_PROG; | |
cd5f6346 KP |
273 | dataram = ONENAND_CURRENT_BUFFERRAM(this); |
274 | break; | |
275 | } | |
276 | ||
277 | /* Write 'FPA, FSA' of Flash */ | |
278 | value = onenand_page_address(page, sectors); | |
279 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS8); | |
280 | ||
281 | /* Write 'BSA, BSC' of DataRAM */ | |
282 | value = onenand_buffer_address(dataram, sectors, count); | |
283 | this->write_word(value, this->base + ONENAND_REG_START_BUFFER); | |
cd5f6346 KP |
284 | } |
285 | ||
286 | /* Interrupt clear */ | |
287 | this->write_word(ONENAND_INT_CLEAR, this->base + ONENAND_REG_INTERRUPT); | |
288 | ||
289 | /* Write command */ | |
290 | this->write_word(cmd, this->base + ONENAND_REG_COMMAND); | |
291 | ||
292 | return 0; | |
293 | } | |
294 | ||
295 | /** | |
296 | * onenand_wait - [DEFAULT] wait until the command is done | |
297 | * @param mtd MTD device structure | |
298 | * @param state state to select the max. timeout value | |
299 | * | |
300 | * Wait for command done. This applies to all OneNAND command | |
301 | * Read can take up to 30us, erase up to 2ms and program up to 350us | |
302 | * according to general OneNAND specs | |
303 | */ | |
304 | static int onenand_wait(struct mtd_info *mtd, int state) | |
305 | { | |
306 | struct onenand_chip * this = mtd->priv; | |
307 | unsigned long timeout; | |
308 | unsigned int flags = ONENAND_INT_MASTER; | |
309 | unsigned int interrupt = 0; | |
2fd32d4a | 310 | unsigned int ctrl; |
cd5f6346 KP |
311 | |
312 | /* The 20 msec is enough */ | |
313 | timeout = jiffies + msecs_to_jiffies(20); | |
314 | while (time_before(jiffies, timeout)) { | |
315 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); | |
316 | ||
317 | if (interrupt & flags) | |
318 | break; | |
319 | ||
320 | if (state != FL_READING) | |
321 | cond_resched(); | |
322 | } | |
323 | /* To get correct interrupt status in timeout case */ | |
324 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); | |
325 | ||
326 | ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS); | |
327 | ||
83973b87 KP |
328 | /* |
329 | * In the Spec. it checks the controller status first | |
330 | * However if you get the correct information in case of | |
331 | * power off recovery (POR) test, it should read ECC status first | |
332 | */ | |
cd5f6346 | 333 | if (interrupt & ONENAND_INT_READ) { |
2fd32d4a | 334 | int ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS); |
f4f91ac3 | 335 | if (ecc) { |
b3c9f8bf | 336 | if (ecc & ONENAND_ECC_2BIT_ALL) { |
49dc08ee | 337 | printk(KERN_ERR "onenand_wait: ECC error = 0x%04x\n", ecc); |
f4f91ac3 | 338 | mtd->ecc_stats.failed++; |
30a7eb29 | 339 | return -EBADMSG; |
49dc08ee AB |
340 | } else if (ecc & ONENAND_ECC_1BIT_ALL) { |
341 | printk(KERN_INFO "onenand_wait: correctable ECC error = 0x%04x\n", ecc); | |
f4f91ac3 | 342 | mtd->ecc_stats.corrected++; |
49dc08ee | 343 | } |
cd5f6346 | 344 | } |
9d032801 AH |
345 | } else if (state == FL_READING) { |
346 | printk(KERN_ERR "onenand_wait: read timeout! ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt); | |
347 | return -EIO; | |
cd5f6346 KP |
348 | } |
349 | ||
83973b87 KP |
350 | /* If there's controller error, it's a real error */ |
351 | if (ctrl & ONENAND_CTRL_ERROR) { | |
352 | printk(KERN_ERR "onenand_wait: controller error = 0x%04x\n", | |
353 | ctrl); | |
354 | if (ctrl & ONENAND_CTRL_LOCK) | |
355 | printk(KERN_ERR "onenand_wait: it's locked error.\n"); | |
356 | return -EIO; | |
357 | } | |
358 | ||
cd5f6346 KP |
359 | return 0; |
360 | } | |
361 | ||
2c22120f KP |
362 | /* |
363 | * onenand_interrupt - [DEFAULT] onenand interrupt handler | |
364 | * @param irq onenand interrupt number | |
365 | * @param dev_id interrupt data | |
366 | * | |
367 | * complete the work | |
368 | */ | |
369 | static irqreturn_t onenand_interrupt(int irq, void *data) | |
370 | { | |
06efcad0 | 371 | struct onenand_chip *this = data; |
2c22120f KP |
372 | |
373 | /* To handle shared interrupt */ | |
374 | if (!this->complete.done) | |
375 | complete(&this->complete); | |
376 | ||
377 | return IRQ_HANDLED; | |
378 | } | |
379 | ||
380 | /* | |
381 | * onenand_interrupt_wait - [DEFAULT] wait until the command is done | |
382 | * @param mtd MTD device structure | |
383 | * @param state state to select the max. timeout value | |
384 | * | |
385 | * Wait for command done. | |
386 | */ | |
387 | static int onenand_interrupt_wait(struct mtd_info *mtd, int state) | |
388 | { | |
389 | struct onenand_chip *this = mtd->priv; | |
390 | ||
2c22120f KP |
391 | wait_for_completion(&this->complete); |
392 | ||
393 | return onenand_wait(mtd, state); | |
394 | } | |
395 | ||
396 | /* | |
397 | * onenand_try_interrupt_wait - [DEFAULT] try interrupt wait | |
398 | * @param mtd MTD device structure | |
399 | * @param state state to select the max. timeout value | |
400 | * | |
401 | * Try interrupt based wait (It is used one-time) | |
402 | */ | |
403 | static int onenand_try_interrupt_wait(struct mtd_info *mtd, int state) | |
404 | { | |
405 | struct onenand_chip *this = mtd->priv; | |
406 | unsigned long remain, timeout; | |
407 | ||
408 | /* We use interrupt wait first */ | |
409 | this->wait = onenand_interrupt_wait; | |
410 | ||
2c22120f KP |
411 | timeout = msecs_to_jiffies(100); |
412 | remain = wait_for_completion_timeout(&this->complete, timeout); | |
413 | if (!remain) { | |
414 | printk(KERN_INFO "OneNAND: There's no interrupt. " | |
415 | "We use the normal wait\n"); | |
416 | ||
417 | /* Release the irq */ | |
418 | free_irq(this->irq, this); | |
c9ac5977 | 419 | |
2c22120f KP |
420 | this->wait = onenand_wait; |
421 | } | |
422 | ||
423 | return onenand_wait(mtd, state); | |
424 | } | |
425 | ||
426 | /* | |
427 | * onenand_setup_wait - [OneNAND Interface] setup onenand wait method | |
428 | * @param mtd MTD device structure | |
429 | * | |
430 | * There's two method to wait onenand work | |
431 | * 1. polling - read interrupt status register | |
432 | * 2. interrupt - use the kernel interrupt method | |
433 | */ | |
434 | static void onenand_setup_wait(struct mtd_info *mtd) | |
435 | { | |
436 | struct onenand_chip *this = mtd->priv; | |
437 | int syscfg; | |
438 | ||
439 | init_completion(&this->complete); | |
440 | ||
441 | if (this->irq <= 0) { | |
442 | this->wait = onenand_wait; | |
443 | return; | |
444 | } | |
445 | ||
446 | if (request_irq(this->irq, &onenand_interrupt, | |
447 | IRQF_SHARED, "onenand", this)) { | |
448 | /* If we can't get irq, use the normal wait */ | |
449 | this->wait = onenand_wait; | |
450 | return; | |
451 | } | |
452 | ||
453 | /* Enable interrupt */ | |
454 | syscfg = this->read_word(this->base + ONENAND_REG_SYS_CFG1); | |
455 | syscfg |= ONENAND_SYS_CFG1_IOBE; | |
456 | this->write_word(syscfg, this->base + ONENAND_REG_SYS_CFG1); | |
457 | ||
458 | this->wait = onenand_try_interrupt_wait; | |
459 | } | |
460 | ||
cd5f6346 KP |
461 | /** |
462 | * onenand_bufferram_offset - [DEFAULT] BufferRAM offset | |
463 | * @param mtd MTD data structure | |
464 | * @param area BufferRAM area | |
465 | * @return offset given area | |
466 | * | |
467 | * Return BufferRAM offset given area | |
468 | */ | |
469 | static inline int onenand_bufferram_offset(struct mtd_info *mtd, int area) | |
470 | { | |
471 | struct onenand_chip *this = mtd->priv; | |
472 | ||
473 | if (ONENAND_CURRENT_BUFFERRAM(this)) { | |
ee9745fc | 474 | /* Note: the 'this->writesize' is a real page size */ |
cd5f6346 | 475 | if (area == ONENAND_DATARAM) |
ee9745fc | 476 | return this->writesize; |
cd5f6346 KP |
477 | if (area == ONENAND_SPARERAM) |
478 | return mtd->oobsize; | |
479 | } | |
480 | ||
481 | return 0; | |
482 | } | |
483 | ||
484 | /** | |
485 | * onenand_read_bufferram - [OneNAND Interface] Read the bufferram area | |
486 | * @param mtd MTD data structure | |
487 | * @param area BufferRAM area | |
488 | * @param buffer the databuffer to put/get data | |
489 | * @param offset offset to read from or write to | |
490 | * @param count number of bytes to read/write | |
491 | * | |
492 | * Read the BufferRAM area | |
493 | */ | |
494 | static int onenand_read_bufferram(struct mtd_info *mtd, int area, | |
495 | unsigned char *buffer, int offset, size_t count) | |
496 | { | |
497 | struct onenand_chip *this = mtd->priv; | |
498 | void __iomem *bufferram; | |
499 | ||
500 | bufferram = this->base + area; | |
501 | ||
502 | bufferram += onenand_bufferram_offset(mtd, area); | |
503 | ||
9c01f87d KP |
504 | if (ONENAND_CHECK_BYTE_ACCESS(count)) { |
505 | unsigned short word; | |
506 | ||
507 | /* Align with word(16-bit) size */ | |
508 | count--; | |
509 | ||
510 | /* Read word and save byte */ | |
511 | word = this->read_word(bufferram + offset + count); | |
512 | buffer[count] = (word & 0xff); | |
513 | } | |
514 | ||
cd5f6346 KP |
515 | memcpy(buffer, bufferram + offset, count); |
516 | ||
517 | return 0; | |
518 | } | |
519 | ||
52b0eea7 KP |
520 | /** |
521 | * onenand_sync_read_bufferram - [OneNAND Interface] Read the bufferram area with Sync. Burst mode | |
522 | * @param mtd MTD data structure | |
523 | * @param area BufferRAM area | |
524 | * @param buffer the databuffer to put/get data | |
525 | * @param offset offset to read from or write to | |
526 | * @param count number of bytes to read/write | |
527 | * | |
528 | * Read the BufferRAM area with Sync. Burst Mode | |
529 | */ | |
530 | static int onenand_sync_read_bufferram(struct mtd_info *mtd, int area, | |
531 | unsigned char *buffer, int offset, size_t count) | |
532 | { | |
533 | struct onenand_chip *this = mtd->priv; | |
534 | void __iomem *bufferram; | |
535 | ||
536 | bufferram = this->base + area; | |
537 | ||
538 | bufferram += onenand_bufferram_offset(mtd, area); | |
539 | ||
540 | this->mmcontrol(mtd, ONENAND_SYS_CFG1_SYNC_READ); | |
541 | ||
9c01f87d KP |
542 | if (ONENAND_CHECK_BYTE_ACCESS(count)) { |
543 | unsigned short word; | |
544 | ||
545 | /* Align with word(16-bit) size */ | |
546 | count--; | |
547 | ||
548 | /* Read word and save byte */ | |
549 | word = this->read_word(bufferram + offset + count); | |
550 | buffer[count] = (word & 0xff); | |
551 | } | |
552 | ||
52b0eea7 KP |
553 | memcpy(buffer, bufferram + offset, count); |
554 | ||
555 | this->mmcontrol(mtd, 0); | |
556 | ||
557 | return 0; | |
558 | } | |
559 | ||
cd5f6346 KP |
560 | /** |
561 | * onenand_write_bufferram - [OneNAND Interface] Write the bufferram area | |
562 | * @param mtd MTD data structure | |
563 | * @param area BufferRAM area | |
564 | * @param buffer the databuffer to put/get data | |
565 | * @param offset offset to read from or write to | |
566 | * @param count number of bytes to read/write | |
567 | * | |
568 | * Write the BufferRAM area | |
569 | */ | |
570 | static int onenand_write_bufferram(struct mtd_info *mtd, int area, | |
571 | const unsigned char *buffer, int offset, size_t count) | |
572 | { | |
573 | struct onenand_chip *this = mtd->priv; | |
574 | void __iomem *bufferram; | |
575 | ||
576 | bufferram = this->base + area; | |
577 | ||
578 | bufferram += onenand_bufferram_offset(mtd, area); | |
579 | ||
9c01f87d KP |
580 | if (ONENAND_CHECK_BYTE_ACCESS(count)) { |
581 | unsigned short word; | |
582 | int byte_offset; | |
583 | ||
584 | /* Align with word(16-bit) size */ | |
585 | count--; | |
586 | ||
587 | /* Calculate byte access offset */ | |
588 | byte_offset = offset + count; | |
589 | ||
590 | /* Read word and save byte */ | |
591 | word = this->read_word(bufferram + byte_offset); | |
592 | word = (word & ~0xff) | buffer[count]; | |
593 | this->write_word(word, bufferram + byte_offset); | |
594 | } | |
595 | ||
cd5f6346 KP |
596 | memcpy(bufferram + offset, buffer, count); |
597 | ||
598 | return 0; | |
599 | } | |
600 | ||
ee9745fc KP |
601 | /** |
602 | * onenand_get_2x_blockpage - [GENERIC] Get blockpage at 2x program mode | |
603 | * @param mtd MTD data structure | |
604 | * @param addr address to check | |
605 | * @return blockpage address | |
606 | * | |
607 | * Get blockpage address at 2x program mode | |
608 | */ | |
609 | static int onenand_get_2x_blockpage(struct mtd_info *mtd, loff_t addr) | |
610 | { | |
611 | struct onenand_chip *this = mtd->priv; | |
612 | int blockpage, block, page; | |
613 | ||
614 | /* Calculate the even block number */ | |
615 | block = (int) (addr >> this->erase_shift) & ~1; | |
616 | /* Is it the odd plane? */ | |
617 | if (addr & this->writesize) | |
618 | block++; | |
619 | page = (int) (addr >> (this->page_shift + 1)) & this->page_mask; | |
620 | blockpage = (block << 7) | page; | |
621 | ||
622 | return blockpage; | |
623 | } | |
624 | ||
cd5f6346 KP |
625 | /** |
626 | * onenand_check_bufferram - [GENERIC] Check BufferRAM information | |
627 | * @param mtd MTD data structure | |
628 | * @param addr address to check | |
d5c5e78a | 629 | * @return 1 if there are valid data, otherwise 0 |
cd5f6346 KP |
630 | * |
631 | * Check bufferram if there is data we required | |
632 | */ | |
633 | static int onenand_check_bufferram(struct mtd_info *mtd, loff_t addr) | |
634 | { | |
635 | struct onenand_chip *this = mtd->priv; | |
cde36b37 | 636 | int blockpage, found = 0; |
abf3c0f2 | 637 | unsigned int i; |
d5c5e78a | 638 | |
ee9745fc KP |
639 | if (ONENAND_IS_2PLANE(this)) |
640 | blockpage = onenand_get_2x_blockpage(mtd, addr); | |
641 | else | |
642 | blockpage = (int) (addr >> this->page_shift); | |
cd5f6346 | 643 | |
abf3c0f2 | 644 | /* Is there valid data? */ |
cd5f6346 | 645 | i = ONENAND_CURRENT_BUFFERRAM(this); |
abf3c0f2 | 646 | if (this->bufferram[i].blockpage == blockpage) |
cde36b37 AH |
647 | found = 1; |
648 | else { | |
649 | /* Check another BufferRAM */ | |
650 | i = ONENAND_NEXT_BUFFERRAM(this); | |
651 | if (this->bufferram[i].blockpage == blockpage) { | |
652 | ONENAND_SET_NEXT_BUFFERRAM(this); | |
653 | found = 1; | |
654 | } | |
655 | } | |
cd5f6346 | 656 | |
cde36b37 AH |
657 | if (found && ONENAND_IS_DDP(this)) { |
658 | /* Select DataRAM for DDP */ | |
659 | int block = (int) (addr >> this->erase_shift); | |
660 | int value = onenand_bufferram_address(this, block); | |
661 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); | |
abf3c0f2 | 662 | } |
cd5f6346 | 663 | |
cde36b37 | 664 | return found; |
cd5f6346 KP |
665 | } |
666 | ||
667 | /** | |
668 | * onenand_update_bufferram - [GENERIC] Update BufferRAM information | |
669 | * @param mtd MTD data structure | |
670 | * @param addr address to update | |
671 | * @param valid valid flag | |
672 | * | |
673 | * Update BufferRAM information | |
674 | */ | |
abf3c0f2 | 675 | static void onenand_update_bufferram(struct mtd_info *mtd, loff_t addr, |
cd5f6346 KP |
676 | int valid) |
677 | { | |
678 | struct onenand_chip *this = mtd->priv; | |
abf3c0f2 KP |
679 | int blockpage; |
680 | unsigned int i; | |
d5c5e78a | 681 | |
ee9745fc KP |
682 | if (ONENAND_IS_2PLANE(this)) |
683 | blockpage = onenand_get_2x_blockpage(mtd, addr); | |
684 | else | |
685 | blockpage = (int) (addr >> this->page_shift); | |
cd5f6346 | 686 | |
abf3c0f2 KP |
687 | /* Invalidate another BufferRAM */ |
688 | i = ONENAND_NEXT_BUFFERRAM(this); | |
5b4246f1 | 689 | if (this->bufferram[i].blockpage == blockpage) |
abf3c0f2 | 690 | this->bufferram[i].blockpage = -1; |
cd5f6346 KP |
691 | |
692 | /* Update BufferRAM */ | |
693 | i = ONENAND_CURRENT_BUFFERRAM(this); | |
abf3c0f2 KP |
694 | if (valid) |
695 | this->bufferram[i].blockpage = blockpage; | |
696 | else | |
697 | this->bufferram[i].blockpage = -1; | |
cd5f6346 KP |
698 | } |
699 | ||
480b9dfb AH |
700 | /** |
701 | * onenand_invalidate_bufferram - [GENERIC] Invalidate BufferRAM information | |
702 | * @param mtd MTD data structure | |
703 | * @param addr start address to invalidate | |
704 | * @param len length to invalidate | |
705 | * | |
706 | * Invalidate BufferRAM information | |
707 | */ | |
708 | static void onenand_invalidate_bufferram(struct mtd_info *mtd, loff_t addr, | |
709 | unsigned int len) | |
710 | { | |
711 | struct onenand_chip *this = mtd->priv; | |
712 | int i; | |
713 | loff_t end_addr = addr + len; | |
714 | ||
715 | /* Invalidate BufferRAM */ | |
716 | for (i = 0; i < MAX_BUFFERRAM; i++) { | |
717 | loff_t buf_addr = this->bufferram[i].blockpage << this->page_shift; | |
718 | if (buf_addr >= addr && buf_addr < end_addr) | |
719 | this->bufferram[i].blockpage = -1; | |
720 | } | |
721 | } | |
722 | ||
cd5f6346 KP |
723 | /** |
724 | * onenand_get_device - [GENERIC] Get chip for selected access | |
725 | * @param mtd MTD device structure | |
726 | * @param new_state the state which is requested | |
727 | * | |
728 | * Get the device and lock it for exclusive access | |
729 | */ | |
a41371eb | 730 | static int onenand_get_device(struct mtd_info *mtd, int new_state) |
cd5f6346 KP |
731 | { |
732 | struct onenand_chip *this = mtd->priv; | |
733 | DECLARE_WAITQUEUE(wait, current); | |
734 | ||
735 | /* | |
736 | * Grab the lock and see if the device is available | |
737 | */ | |
738 | while (1) { | |
739 | spin_lock(&this->chip_lock); | |
740 | if (this->state == FL_READY) { | |
741 | this->state = new_state; | |
742 | spin_unlock(&this->chip_lock); | |
743 | break; | |
744 | } | |
a41371eb KP |
745 | if (new_state == FL_PM_SUSPENDED) { |
746 | spin_unlock(&this->chip_lock); | |
747 | return (this->state == FL_PM_SUSPENDED) ? 0 : -EAGAIN; | |
748 | } | |
cd5f6346 KP |
749 | set_current_state(TASK_UNINTERRUPTIBLE); |
750 | add_wait_queue(&this->wq, &wait); | |
751 | spin_unlock(&this->chip_lock); | |
752 | schedule(); | |
753 | remove_wait_queue(&this->wq, &wait); | |
754 | } | |
a41371eb KP |
755 | |
756 | return 0; | |
cd5f6346 KP |
757 | } |
758 | ||
759 | /** | |
760 | * onenand_release_device - [GENERIC] release chip | |
761 | * @param mtd MTD device structure | |
762 | * | |
763 | * Deselect, release chip lock and wake up anyone waiting on the device | |
764 | */ | |
765 | static void onenand_release_device(struct mtd_info *mtd) | |
766 | { | |
767 | struct onenand_chip *this = mtd->priv; | |
768 | ||
769 | /* Release the chip */ | |
770 | spin_lock(&this->chip_lock); | |
771 | this->state = FL_READY; | |
772 | wake_up(&this->wq); | |
773 | spin_unlock(&this->chip_lock); | |
774 | } | |
775 | ||
776 | /** | |
d15057b7 KP |
777 | * onenand_transfer_auto_oob - [Internal] oob auto-placement transfer |
778 | * @param mtd MTD device structure | |
779 | * @param buf destination address | |
780 | * @param column oob offset to read from | |
781 | * @param thislen oob length to read | |
782 | */ | |
783 | static int onenand_transfer_auto_oob(struct mtd_info *mtd, uint8_t *buf, int column, | |
784 | int thislen) | |
785 | { | |
786 | struct onenand_chip *this = mtd->priv; | |
787 | struct nand_oobfree *free; | |
788 | int readcol = column; | |
789 | int readend = column + thislen; | |
790 | int lastgap = 0; | |
791 | unsigned int i; | |
792 | uint8_t *oob_buf = this->oob_buf; | |
793 | ||
794 | free = this->ecclayout->oobfree; | |
795 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { | |
796 | if (readcol >= lastgap) | |
797 | readcol += free->offset - lastgap; | |
798 | if (readend >= lastgap) | |
799 | readend += free->offset - lastgap; | |
800 | lastgap = free->offset + free->length; | |
801 | } | |
802 | this->read_bufferram(mtd, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize); | |
803 | free = this->ecclayout->oobfree; | |
804 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { | |
805 | int free_end = free->offset + free->length; | |
806 | if (free->offset < readend && free_end > readcol) { | |
807 | int st = max_t(int,free->offset,readcol); | |
808 | int ed = min_t(int,free_end,readend); | |
809 | int n = ed - st; | |
810 | memcpy(buf, oob_buf + st, n); | |
811 | buf += n; | |
812 | } else if (column == 0) | |
813 | break; | |
814 | } | |
815 | return 0; | |
816 | } | |
817 | ||
818 | /** | |
49dc08ee | 819 | * onenand_read_ops_nolock - [OneNAND Interface] OneNAND read main and/or out-of-band |
cd5f6346 KP |
820 | * @param mtd MTD device structure |
821 | * @param from offset to read from | |
d15057b7 | 822 | * @param ops: oob operation description structure |
cd5f6346 | 823 | * |
d15057b7 KP |
824 | * OneNAND read main and/or out-of-band data |
825 | */ | |
49dc08ee | 826 | static int onenand_read_ops_nolock(struct mtd_info *mtd, loff_t from, |
d15057b7 | 827 | struct mtd_oob_ops *ops) |
cd5f6346 KP |
828 | { |
829 | struct onenand_chip *this = mtd->priv; | |
f4f91ac3 | 830 | struct mtd_ecc_stats stats; |
d15057b7 KP |
831 | size_t len = ops->len; |
832 | size_t ooblen = ops->ooblen; | |
833 | u_char *buf = ops->datbuf; | |
834 | u_char *oobbuf = ops->oobbuf; | |
835 | int read = 0, column, thislen; | |
836 | int oobread = 0, oobcolumn, thisooblen, oobsize; | |
0fc2ccea | 837 | int ret = 0, boundary = 0; |
ee9745fc | 838 | int writesize = this->writesize; |
cd5f6346 | 839 | |
49dc08ee | 840 | DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_ops_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); |
d15057b7 KP |
841 | |
842 | if (ops->mode == MTD_OOB_AUTO) | |
843 | oobsize = this->ecclayout->oobavail; | |
844 | else | |
845 | oobsize = mtd->oobsize; | |
846 | ||
847 | oobcolumn = from & (mtd->oobsize - 1); | |
cd5f6346 KP |
848 | |
849 | /* Do not allow reads past end of device */ | |
850 | if ((from + len) > mtd->size) { | |
49dc08ee | 851 | printk(KERN_ERR "onenand_read_ops_nolock: Attempt read beyond end of device\n"); |
d15057b7 KP |
852 | ops->retlen = 0; |
853 | ops->oobretlen = 0; | |
cd5f6346 KP |
854 | return -EINVAL; |
855 | } | |
856 | ||
f4f91ac3 | 857 | stats = mtd->ecc_stats; |
61a7e198 | 858 | |
a8de85d5 AH |
859 | /* Read-while-load method */ |
860 | ||
861 | /* Do first load to bufferRAM */ | |
862 | if (read < len) { | |
863 | if (!onenand_check_bufferram(mtd, from)) { | |
ee9745fc | 864 | this->command(mtd, ONENAND_CMD_READ, from, writesize); |
a8de85d5 AH |
865 | ret = this->wait(mtd, FL_READING); |
866 | onenand_update_bufferram(mtd, from, !ret); | |
5f4d47d5 AH |
867 | if (ret == -EBADMSG) |
868 | ret = 0; | |
a8de85d5 AH |
869 | } |
870 | } | |
871 | ||
ee9745fc KP |
872 | thislen = min_t(int, writesize, len - read); |
873 | column = from & (writesize - 1); | |
874 | if (column + thislen > writesize) | |
875 | thislen = writesize - column; | |
a8de85d5 AH |
876 | |
877 | while (!ret) { | |
878 | /* If there is more to load then start next load */ | |
879 | from += thislen; | |
880 | if (read + thislen < len) { | |
ee9745fc | 881 | this->command(mtd, ONENAND_CMD_READ, from, writesize); |
0fc2ccea AH |
882 | /* |
883 | * Chip boundary handling in DDP | |
884 | * Now we issued chip 1 read and pointed chip 1 | |
885 | * bufferam so we have to point chip 0 bufferam. | |
886 | */ | |
738d61f5 KP |
887 | if (ONENAND_IS_DDP(this) && |
888 | unlikely(from == (this->chipsize >> 1))) { | |
889 | this->write_word(ONENAND_DDP_CHIP0, this->base + ONENAND_REG_START_ADDRESS2); | |
0fc2ccea AH |
890 | boundary = 1; |
891 | } else | |
892 | boundary = 0; | |
a8de85d5 AH |
893 | ONENAND_SET_PREV_BUFFERRAM(this); |
894 | } | |
895 | /* While load is going, read from last bufferRAM */ | |
896 | this->read_bufferram(mtd, ONENAND_DATARAM, buf, column, thislen); | |
d15057b7 KP |
897 | |
898 | /* Read oob area if needed */ | |
899 | if (oobbuf) { | |
900 | thisooblen = oobsize - oobcolumn; | |
901 | thisooblen = min_t(int, thisooblen, ooblen - oobread); | |
902 | ||
903 | if (ops->mode == MTD_OOB_AUTO) | |
904 | onenand_transfer_auto_oob(mtd, oobbuf, oobcolumn, thisooblen); | |
905 | else | |
906 | this->read_bufferram(mtd, ONENAND_SPARERAM, oobbuf, oobcolumn, thisooblen); | |
907 | oobread += thisooblen; | |
908 | oobbuf += thisooblen; | |
909 | oobcolumn = 0; | |
910 | } | |
911 | ||
a8de85d5 AH |
912 | /* See if we are done */ |
913 | read += thislen; | |
914 | if (read == len) | |
915 | break; | |
916 | /* Set up for next read from bufferRAM */ | |
0fc2ccea | 917 | if (unlikely(boundary)) |
738d61f5 | 918 | this->write_word(ONENAND_DDP_CHIP1, this->base + ONENAND_REG_START_ADDRESS2); |
a8de85d5 AH |
919 | ONENAND_SET_NEXT_BUFFERRAM(this); |
920 | buf += thislen; | |
ee9745fc | 921 | thislen = min_t(int, writesize, len - read); |
a8de85d5 AH |
922 | column = 0; |
923 | cond_resched(); | |
924 | /* Now wait for load */ | |
925 | ret = this->wait(mtd, FL_READING); | |
926 | onenand_update_bufferram(mtd, from, !ret); | |
5f4d47d5 AH |
927 | if (ret == -EBADMSG) |
928 | ret = 0; | |
a8de85d5 | 929 | } |
cd5f6346 | 930 | |
cd5f6346 KP |
931 | /* |
932 | * Return success, if no ECC failures, else -EBADMSG | |
933 | * fs driver will take care of that, because | |
934 | * retlen == desired len and result == -EBADMSG | |
935 | */ | |
d15057b7 KP |
936 | ops->retlen = read; |
937 | ops->oobretlen = oobread; | |
f4f91ac3 | 938 | |
a8de85d5 AH |
939 | if (ret) |
940 | return ret; | |
941 | ||
5f4d47d5 AH |
942 | if (mtd->ecc_stats.failed - stats.failed) |
943 | return -EBADMSG; | |
944 | ||
f4f91ac3 | 945 | return mtd->ecc_stats.corrected - stats.corrected ? -EUCLEAN : 0; |
cd5f6346 KP |
946 | } |
947 | ||
cd5f6346 | 948 | /** |
49dc08ee | 949 | * onenand_read_oob_nolock - [MTD Interface] OneNAND read out-of-band |
cd5f6346 KP |
950 | * @param mtd MTD device structure |
951 | * @param from offset to read from | |
d15057b7 | 952 | * @param ops: oob operation description structure |
cd5f6346 KP |
953 | * |
954 | * OneNAND read out-of-band data from the spare area | |
955 | */ | |
49dc08ee | 956 | static int onenand_read_oob_nolock(struct mtd_info *mtd, loff_t from, |
12f77c9e | 957 | struct mtd_oob_ops *ops) |
cd5f6346 KP |
958 | { |
959 | struct onenand_chip *this = mtd->priv; | |
5f4d47d5 | 960 | struct mtd_ecc_stats stats; |
a5e7c7b4 | 961 | int read = 0, thislen, column, oobsize; |
12f77c9e KP |
962 | size_t len = ops->ooblen; |
963 | mtd_oob_mode_t mode = ops->mode; | |
964 | u_char *buf = ops->oobbuf; | |
cd5f6346 KP |
965 | int ret = 0; |
966 | ||
12f77c9e KP |
967 | from += ops->ooboffs; |
968 | ||
49dc08ee | 969 | DEBUG(MTD_DEBUG_LEVEL3, "onenand_read_oob_nolock: from = 0x%08x, len = %i\n", (unsigned int) from, (int) len); |
cd5f6346 KP |
970 | |
971 | /* Initialize return length value */ | |
12f77c9e | 972 | ops->oobretlen = 0; |
cd5f6346 | 973 | |
a5e7c7b4 AH |
974 | if (mode == MTD_OOB_AUTO) |
975 | oobsize = this->ecclayout->oobavail; | |
976 | else | |
977 | oobsize = mtd->oobsize; | |
978 | ||
979 | column = from & (mtd->oobsize - 1); | |
980 | ||
981 | if (unlikely(column >= oobsize)) { | |
49dc08ee | 982 | printk(KERN_ERR "onenand_read_oob_nolock: Attempted to start read outside oob\n"); |
a5e7c7b4 AH |
983 | return -EINVAL; |
984 | } | |
985 | ||
cd5f6346 | 986 | /* Do not allow reads past end of device */ |
a5e7c7b4 AH |
987 | if (unlikely(from >= mtd->size || |
988 | column + len > ((mtd->size >> this->page_shift) - | |
989 | (from >> this->page_shift)) * oobsize)) { | |
49dc08ee | 990 | printk(KERN_ERR "onenand_read_oob_nolock: Attempted to read beyond end of device\n"); |
cd5f6346 KP |
991 | return -EINVAL; |
992 | } | |
993 | ||
5f4d47d5 AH |
994 | stats = mtd->ecc_stats; |
995 | ||
cd5f6346 | 996 | while (read < len) { |
61a7e198 AB |
997 | cond_resched(); |
998 | ||
a5e7c7b4 | 999 | thislen = oobsize - column; |
cd5f6346 KP |
1000 | thislen = min_t(int, thislen, len); |
1001 | ||
1002 | this->command(mtd, ONENAND_CMD_READOOB, from, mtd->oobsize); | |
1003 | ||
1004 | onenand_update_bufferram(mtd, from, 0); | |
1005 | ||
1006 | ret = this->wait(mtd, FL_READING); | |
5f4d47d5 AH |
1007 | if (ret && ret != -EBADMSG) { |
1008 | printk(KERN_ERR "onenand_read_oob_nolock: read failed = 0x%x\n", ret); | |
1009 | break; | |
1010 | } | |
cd5f6346 | 1011 | |
a5e7c7b4 AH |
1012 | if (mode == MTD_OOB_AUTO) |
1013 | onenand_transfer_auto_oob(mtd, buf, column, thislen); | |
1014 | else | |
1015 | this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen); | |
cd5f6346 KP |
1016 | |
1017 | read += thislen; | |
1018 | ||
1019 | if (read == len) | |
1020 | break; | |
1021 | ||
cd5f6346 KP |
1022 | buf += thislen; |
1023 | ||
1024 | /* Read more? */ | |
1025 | if (read < len) { | |
1026 | /* Page size */ | |
28318776 | 1027 | from += mtd->writesize; |
cd5f6346 KP |
1028 | column = 0; |
1029 | } | |
1030 | } | |
1031 | ||
12f77c9e | 1032 | ops->oobretlen = read; |
5f4d47d5 AH |
1033 | |
1034 | if (ret) | |
1035 | return ret; | |
1036 | ||
1037 | if (mtd->ecc_stats.failed - stats.failed) | |
1038 | return -EBADMSG; | |
1039 | ||
1040 | return 0; | |
cd5f6346 KP |
1041 | } |
1042 | ||
8593fbc6 | 1043 | /** |
d15057b7 KP |
1044 | * onenand_read - [MTD Interface] Read data from flash |
1045 | * @param mtd MTD device structure | |
1046 | * @param from offset to read from | |
1047 | * @param len number of bytes to read | |
1048 | * @param retlen pointer to variable to store the number of read bytes | |
1049 | * @param buf the databuffer to put data | |
1050 | * | |
1051 | * Read with ecc | |
1052 | */ | |
1053 | static int onenand_read(struct mtd_info *mtd, loff_t from, size_t len, | |
1054 | size_t *retlen, u_char *buf) | |
1055 | { | |
1056 | struct mtd_oob_ops ops = { | |
1057 | .len = len, | |
1058 | .ooblen = 0, | |
1059 | .datbuf = buf, | |
1060 | .oobbuf = NULL, | |
1061 | }; | |
1062 | int ret; | |
1063 | ||
49dc08ee AB |
1064 | onenand_get_device(mtd, FL_READING); |
1065 | ret = onenand_read_ops_nolock(mtd, from, &ops); | |
1066 | onenand_release_device(mtd); | |
d15057b7 | 1067 | |
49dc08ee | 1068 | *retlen = ops.retlen; |
d15057b7 KP |
1069 | return ret; |
1070 | } | |
1071 | ||
1072 | /** | |
1073 | * onenand_read_oob - [MTD Interface] Read main and/or out-of-band | |
e3da8067 KP |
1074 | * @param mtd: MTD device structure |
1075 | * @param from: offset to read from | |
1076 | * @param ops: oob operation description structure | |
d15057b7 KP |
1077 | |
1078 | * Read main and/or out-of-band | |
8593fbc6 TG |
1079 | */ |
1080 | static int onenand_read_oob(struct mtd_info *mtd, loff_t from, | |
1081 | struct mtd_oob_ops *ops) | |
1082 | { | |
49dc08ee AB |
1083 | int ret; |
1084 | ||
4f4fad27 | 1085 | switch (ops->mode) { |
a5e7c7b4 AH |
1086 | case MTD_OOB_PLACE: |
1087 | case MTD_OOB_AUTO: | |
1088 | break; | |
1089 | case MTD_OOB_RAW: | |
4f4fad27 | 1090 | /* Not implemented yet */ |
a5e7c7b4 AH |
1091 | default: |
1092 | return -EINVAL; | |
1093 | } | |
d15057b7 | 1094 | |
49dc08ee | 1095 | onenand_get_device(mtd, FL_READING); |
d15057b7 | 1096 | if (ops->datbuf) |
49dc08ee AB |
1097 | ret = onenand_read_ops_nolock(mtd, from, ops); |
1098 | else | |
1099 | ret = onenand_read_oob_nolock(mtd, from, ops); | |
1100 | onenand_release_device(mtd); | |
d15057b7 | 1101 | |
49dc08ee | 1102 | return ret; |
8593fbc6 TG |
1103 | } |
1104 | ||
211ac75f KP |
1105 | /** |
1106 | * onenand_bbt_wait - [DEFAULT] wait until the command is done | |
1107 | * @param mtd MTD device structure | |
1108 | * @param state state to select the max. timeout value | |
1109 | * | |
1110 | * Wait for command done. | |
1111 | */ | |
1112 | static int onenand_bbt_wait(struct mtd_info *mtd, int state) | |
1113 | { | |
1114 | struct onenand_chip *this = mtd->priv; | |
1115 | unsigned long timeout; | |
1116 | unsigned int interrupt; | |
1117 | unsigned int ctrl; | |
1118 | ||
1119 | /* The 20 msec is enough */ | |
1120 | timeout = jiffies + msecs_to_jiffies(20); | |
1121 | while (time_before(jiffies, timeout)) { | |
1122 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); | |
1123 | if (interrupt & ONENAND_INT_MASTER) | |
1124 | break; | |
1125 | } | |
1126 | /* To get correct interrupt status in timeout case */ | |
1127 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); | |
1128 | ctrl = this->read_word(this->base + ONENAND_REG_CTRL_STATUS); | |
1129 | ||
211ac75f KP |
1130 | if (interrupt & ONENAND_INT_READ) { |
1131 | int ecc = this->read_word(this->base + ONENAND_REG_ECC_STATUS); | |
83973b87 KP |
1132 | if (ecc & ONENAND_ECC_2BIT_ALL) { |
1133 | printk(KERN_INFO "onenand_bbt_wait: ecc error = 0x%04x" | |
1134 | ", controller error 0x%04x\n", ecc, ctrl); | |
211ac75f | 1135 | return ONENAND_BBT_READ_ERROR; |
83973b87 | 1136 | } |
211ac75f KP |
1137 | } else { |
1138 | printk(KERN_ERR "onenand_bbt_wait: read timeout!" | |
1139 | "ctrl=0x%04x intr=0x%04x\n", ctrl, interrupt); | |
1140 | return ONENAND_BBT_READ_FATAL_ERROR; | |
1141 | } | |
1142 | ||
83973b87 KP |
1143 | /* Initial bad block case: 0x2400 or 0x0400 */ |
1144 | if (ctrl & ONENAND_CTRL_ERROR) { | |
1145 | printk(KERN_DEBUG "onenand_bbt_wait: " | |
1146 | "controller error = 0x%04x\n", ctrl); | |
1147 | return ONENAND_BBT_READ_ERROR; | |
1148 | } | |
1149 | ||
211ac75f KP |
1150 | return 0; |
1151 | } | |
1152 | ||
1153 | /** | |
1154 | * onenand_bbt_read_oob - [MTD Interface] OneNAND read out-of-band for bbt scan | |
1155 | * @param mtd MTD device structure | |
1156 | * @param from offset to read from | |
e3da8067 | 1157 | * @param ops oob operation description structure |
211ac75f KP |
1158 | * |
1159 | * OneNAND read out-of-band data from the spare area for bbt scan | |
1160 | */ | |
1161 | int onenand_bbt_read_oob(struct mtd_info *mtd, loff_t from, | |
1162 | struct mtd_oob_ops *ops) | |
1163 | { | |
1164 | struct onenand_chip *this = mtd->priv; | |
1165 | int read = 0, thislen, column; | |
1166 | int ret = 0; | |
1167 | size_t len = ops->ooblen; | |
1168 | u_char *buf = ops->oobbuf; | |
1169 | ||
5785bdd6 | 1170 | DEBUG(MTD_DEBUG_LEVEL3, "onenand_bbt_read_oob: from = 0x%08x, len = %zi\n", (unsigned int) from, len); |
211ac75f KP |
1171 | |
1172 | /* Initialize return value */ | |
1173 | ops->oobretlen = 0; | |
1174 | ||
1175 | /* Do not allow reads past end of device */ | |
1176 | if (unlikely((from + len) > mtd->size)) { | |
1177 | printk(KERN_ERR "onenand_bbt_read_oob: Attempt read beyond end of device\n"); | |
1178 | return ONENAND_BBT_READ_FATAL_ERROR; | |
1179 | } | |
1180 | ||
1181 | /* Grab the lock and see if the device is available */ | |
1182 | onenand_get_device(mtd, FL_READING); | |
1183 | ||
1184 | column = from & (mtd->oobsize - 1); | |
1185 | ||
1186 | while (read < len) { | |
1187 | cond_resched(); | |
1188 | ||
1189 | thislen = mtd->oobsize - column; | |
1190 | thislen = min_t(int, thislen, len); | |
1191 | ||
1192 | this->command(mtd, ONENAND_CMD_READOOB, from, mtd->oobsize); | |
1193 | ||
1194 | onenand_update_bufferram(mtd, from, 0); | |
1195 | ||
1196 | ret = onenand_bbt_wait(mtd, FL_READING); | |
1197 | if (ret) | |
1198 | break; | |
1199 | ||
1200 | this->read_bufferram(mtd, ONENAND_SPARERAM, buf, column, thislen); | |
1201 | read += thislen; | |
1202 | if (read == len) | |
1203 | break; | |
1204 | ||
1205 | buf += thislen; | |
1206 | ||
1207 | /* Read more? */ | |
1208 | if (read < len) { | |
1209 | /* Update Page size */ | |
ee9745fc | 1210 | from += this->writesize; |
211ac75f KP |
1211 | column = 0; |
1212 | } | |
1213 | } | |
1214 | ||
1215 | /* Deselect and wake up anyone waiting on the device */ | |
1216 | onenand_release_device(mtd); | |
1217 | ||
1218 | ops->oobretlen = read; | |
1219 | return ret; | |
1220 | } | |
1221 | ||
cd5f6346 | 1222 | #ifdef CONFIG_MTD_ONENAND_VERIFY_WRITE |
8e6ec690 KP |
1223 | /** |
1224 | * onenand_verify_oob - [GENERIC] verify the oob contents after a write | |
1225 | * @param mtd MTD device structure | |
1226 | * @param buf the databuffer to verify | |
1227 | * @param to offset to read from | |
8e6ec690 | 1228 | */ |
a5e7c7b4 | 1229 | static int onenand_verify_oob(struct mtd_info *mtd, const u_char *buf, loff_t to) |
8e6ec690 KP |
1230 | { |
1231 | struct onenand_chip *this = mtd->priv; | |
69d79186 | 1232 | u_char *oob_buf = this->oob_buf; |
8e6ec690 KP |
1233 | int status, i; |
1234 | ||
1235 | this->command(mtd, ONENAND_CMD_READOOB, to, mtd->oobsize); | |
1236 | onenand_update_bufferram(mtd, to, 0); | |
1237 | status = this->wait(mtd, FL_READING); | |
1238 | if (status) | |
1239 | return status; | |
1240 | ||
69d79186 | 1241 | this->read_bufferram(mtd, ONENAND_SPARERAM, oob_buf, 0, mtd->oobsize); |
91014e9b | 1242 | for (i = 0; i < mtd->oobsize; i++) |
69d79186 | 1243 | if (buf[i] != 0xFF && buf[i] != oob_buf[i]) |
8e6ec690 KP |
1244 | return -EBADMSG; |
1245 | ||
1246 | return 0; | |
1247 | } | |
1248 | ||
cd5f6346 | 1249 | /** |
8b29c0b6 AH |
1250 | * onenand_verify - [GENERIC] verify the chip contents after a write |
1251 | * @param mtd MTD device structure | |
1252 | * @param buf the databuffer to verify | |
1253 | * @param addr offset to read from | |
1254 | * @param len number of bytes to read and compare | |
cd5f6346 | 1255 | */ |
8b29c0b6 | 1256 | static int onenand_verify(struct mtd_info *mtd, const u_char *buf, loff_t addr, size_t len) |
cd5f6346 KP |
1257 | { |
1258 | struct onenand_chip *this = mtd->priv; | |
8b29c0b6 | 1259 | void __iomem *dataram; |
cd5f6346 | 1260 | int ret = 0; |
8b29c0b6 | 1261 | int thislen, column; |
cd5f6346 | 1262 | |
8b29c0b6 | 1263 | while (len != 0) { |
ee9745fc KP |
1264 | thislen = min_t(int, this->writesize, len); |
1265 | column = addr & (this->writesize - 1); | |
1266 | if (column + thislen > this->writesize) | |
1267 | thislen = this->writesize - column; | |
60d84f97 | 1268 | |
ee9745fc | 1269 | this->command(mtd, ONENAND_CMD_READ, addr, this->writesize); |
cd5f6346 | 1270 | |
8b29c0b6 AH |
1271 | onenand_update_bufferram(mtd, addr, 0); |
1272 | ||
1273 | ret = this->wait(mtd, FL_READING); | |
1274 | if (ret) | |
1275 | return ret; | |
cd5f6346 | 1276 | |
8b29c0b6 | 1277 | onenand_update_bufferram(mtd, addr, 1); |
cd5f6346 | 1278 | |
8b29c0b6 AH |
1279 | dataram = this->base + ONENAND_DATARAM; |
1280 | dataram += onenand_bufferram_offset(mtd, ONENAND_DATARAM); | |
cd5f6346 | 1281 | |
8b29c0b6 AH |
1282 | if (memcmp(buf, dataram + column, thislen)) |
1283 | return -EBADMSG; | |
1284 | ||
1285 | len -= thislen; | |
1286 | buf += thislen; | |
1287 | addr += thislen; | |
1288 | } | |
d5c5e78a | 1289 | |
cd5f6346 KP |
1290 | return 0; |
1291 | } | |
1292 | #else | |
8b29c0b6 | 1293 | #define onenand_verify(...) (0) |
8e6ec690 | 1294 | #define onenand_verify_oob(...) (0) |
cd5f6346 KP |
1295 | #endif |
1296 | ||
60d84f97 | 1297 | #define NOTALIGNED(x) ((x & (this->subpagesize - 1)) != 0) |
cd5f6346 | 1298 | |
6c77fd64 RP |
1299 | static void onenand_panic_wait(struct mtd_info *mtd) |
1300 | { | |
1301 | struct onenand_chip *this = mtd->priv; | |
1302 | unsigned int interrupt; | |
1303 | int i; | |
1304 | ||
1305 | for (i = 0; i < 2000; i++) { | |
1306 | interrupt = this->read_word(this->base + ONENAND_REG_INTERRUPT); | |
1307 | if (interrupt & ONENAND_INT_MASTER) | |
1308 | break; | |
1309 | udelay(10); | |
1310 | } | |
1311 | } | |
1312 | ||
1313 | /** | |
1314 | * onenand_panic_write - [MTD Interface] write buffer to FLASH in a panic context | |
1315 | * @param mtd MTD device structure | |
1316 | * @param to offset to write to | |
1317 | * @param len number of bytes to write | |
1318 | * @param retlen pointer to variable to store the number of written bytes | |
1319 | * @param buf the data to write | |
1320 | * | |
1321 | * Write with ECC | |
1322 | */ | |
1323 | static int onenand_panic_write(struct mtd_info *mtd, loff_t to, size_t len, | |
1324 | size_t *retlen, const u_char *buf) | |
1325 | { | |
1326 | struct onenand_chip *this = mtd->priv; | |
1327 | int column, subpage; | |
1328 | int written = 0; | |
1329 | int ret = 0; | |
1330 | ||
1331 | if (this->state == FL_PM_SUSPENDED) | |
1332 | return -EBUSY; | |
1333 | ||
1334 | /* Wait for any existing operation to clear */ | |
1335 | onenand_panic_wait(mtd); | |
1336 | ||
1337 | DEBUG(MTD_DEBUG_LEVEL3, "onenand_panic_write: to = 0x%08x, len = %i\n", | |
1338 | (unsigned int) to, (int) len); | |
1339 | ||
1340 | /* Initialize retlen, in case of early exit */ | |
1341 | *retlen = 0; | |
1342 | ||
1343 | /* Do not allow writes past end of device */ | |
1344 | if (unlikely((to + len) > mtd->size)) { | |
1345 | printk(KERN_ERR "onenand_panic_write: Attempt write to past end of device\n"); | |
1346 | return -EINVAL; | |
1347 | } | |
1348 | ||
1349 | /* Reject writes, which are not page aligned */ | |
b73d7e43 | 1350 | if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) { |
6c77fd64 RP |
1351 | printk(KERN_ERR "onenand_panic_write: Attempt to write not page aligned data\n"); |
1352 | return -EINVAL; | |
1353 | } | |
1354 | ||
1355 | column = to & (mtd->writesize - 1); | |
1356 | ||
1357 | /* Loop until all data write */ | |
1358 | while (written < len) { | |
1359 | int thislen = min_t(int, mtd->writesize - column, len - written); | |
1360 | u_char *wbuf = (u_char *) buf; | |
1361 | ||
1362 | this->command(mtd, ONENAND_CMD_BUFFERRAM, to, thislen); | |
1363 | ||
1364 | /* Partial page write */ | |
1365 | subpage = thislen < mtd->writesize; | |
1366 | if (subpage) { | |
1367 | memset(this->page_buf, 0xff, mtd->writesize); | |
1368 | memcpy(this->page_buf + column, buf, thislen); | |
1369 | wbuf = this->page_buf; | |
1370 | } | |
1371 | ||
1372 | this->write_bufferram(mtd, ONENAND_DATARAM, wbuf, 0, mtd->writesize); | |
1373 | this->write_bufferram(mtd, ONENAND_SPARERAM, ffchars, 0, mtd->oobsize); | |
1374 | ||
1375 | this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize); | |
1376 | ||
1377 | onenand_panic_wait(mtd); | |
1378 | ||
1379 | /* In partial page write we don't update bufferram */ | |
1380 | onenand_update_bufferram(mtd, to, !ret && !subpage); | |
1381 | if (ONENAND_IS_2PLANE(this)) { | |
1382 | ONENAND_SET_BUFFERRAM1(this); | |
1383 | onenand_update_bufferram(mtd, to + this->writesize, !ret && !subpage); | |
1384 | } | |
1385 | ||
1386 | if (ret) { | |
1387 | printk(KERN_ERR "onenand_panic_write: write failed %d\n", ret); | |
1388 | break; | |
1389 | } | |
1390 | ||
1391 | written += thislen; | |
1392 | ||
1393 | if (written == len) | |
1394 | break; | |
1395 | ||
1396 | column = 0; | |
1397 | to += thislen; | |
1398 | buf += thislen; | |
1399 | } | |
1400 | ||
1401 | *retlen = written; | |
1402 | return ret; | |
1403 | } | |
1404 | ||
cd5f6346 | 1405 | /** |
d15057b7 KP |
1406 | * onenand_fill_auto_oob - [Internal] oob auto-placement transfer |
1407 | * @param mtd MTD device structure | |
1408 | * @param oob_buf oob buffer | |
1409 | * @param buf source address | |
1410 | * @param column oob offset to write to | |
1411 | * @param thislen oob length to write | |
1412 | */ | |
1413 | static int onenand_fill_auto_oob(struct mtd_info *mtd, u_char *oob_buf, | |
1414 | const u_char *buf, int column, int thislen) | |
1415 | { | |
1416 | struct onenand_chip *this = mtd->priv; | |
1417 | struct nand_oobfree *free; | |
1418 | int writecol = column; | |
1419 | int writeend = column + thislen; | |
1420 | int lastgap = 0; | |
1421 | unsigned int i; | |
1422 | ||
1423 | free = this->ecclayout->oobfree; | |
1424 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { | |
1425 | if (writecol >= lastgap) | |
1426 | writecol += free->offset - lastgap; | |
1427 | if (writeend >= lastgap) | |
1428 | writeend += free->offset - lastgap; | |
1429 | lastgap = free->offset + free->length; | |
1430 | } | |
1431 | free = this->ecclayout->oobfree; | |
1432 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && free->length; i++, free++) { | |
1433 | int free_end = free->offset + free->length; | |
1434 | if (free->offset < writeend && free_end > writecol) { | |
1435 | int st = max_t(int,free->offset,writecol); | |
1436 | int ed = min_t(int,free_end,writeend); | |
1437 | int n = ed - st; | |
1438 | memcpy(oob_buf + st, buf, n); | |
1439 | buf += n; | |
1440 | } else if (column == 0) | |
1441 | break; | |
1442 | } | |
1443 | return 0; | |
1444 | } | |
1445 | ||
1446 | /** | |
49dc08ee | 1447 | * onenand_write_ops_nolock - [OneNAND Interface] write main and/or out-of-band |
cd5f6346 KP |
1448 | * @param mtd MTD device structure |
1449 | * @param to offset to write to | |
d15057b7 | 1450 | * @param ops oob operation description structure |
cd5f6346 | 1451 | * |
d15057b7 | 1452 | * Write main and/or oob with ECC |
cd5f6346 | 1453 | */ |
49dc08ee | 1454 | static int onenand_write_ops_nolock(struct mtd_info *mtd, loff_t to, |
d15057b7 | 1455 | struct mtd_oob_ops *ops) |
cd5f6346 KP |
1456 | { |
1457 | struct onenand_chip *this = mtd->priv; | |
9ce96908 KP |
1458 | int written = 0, column, thislen = 0, subpage = 0; |
1459 | int prev = 0, prevlen = 0, prev_subpage = 0, first = 1; | |
d15057b7 KP |
1460 | int oobwritten = 0, oobcolumn, thisooblen, oobsize; |
1461 | size_t len = ops->len; | |
1462 | size_t ooblen = ops->ooblen; | |
1463 | const u_char *buf = ops->datbuf; | |
1464 | const u_char *oob = ops->oobbuf; | |
1465 | u_char *oobbuf; | |
cd5f6346 KP |
1466 | int ret = 0; |
1467 | ||
49dc08ee | 1468 | DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_ops_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); |
cd5f6346 KP |
1469 | |
1470 | /* Initialize retlen, in case of early exit */ | |
d15057b7 KP |
1471 | ops->retlen = 0; |
1472 | ops->oobretlen = 0; | |
cd5f6346 KP |
1473 | |
1474 | /* Do not allow writes past end of device */ | |
1475 | if (unlikely((to + len) > mtd->size)) { | |
49dc08ee | 1476 | printk(KERN_ERR "onenand_write_ops_nolock: Attempt write to past end of device\n"); |
cd5f6346 KP |
1477 | return -EINVAL; |
1478 | } | |
1479 | ||
1480 | /* Reject writes, which are not page aligned */ | |
b73d7e43 | 1481 | if (unlikely(NOTALIGNED(to) || NOTALIGNED(len))) { |
49dc08ee | 1482 | printk(KERN_ERR "onenand_write_ops_nolock: Attempt to write not page aligned data\n"); |
cd5f6346 KP |
1483 | return -EINVAL; |
1484 | } | |
1485 | ||
9ce96908 KP |
1486 | /* Check zero length */ |
1487 | if (!len) | |
1488 | return 0; | |
1489 | ||
d15057b7 KP |
1490 | if (ops->mode == MTD_OOB_AUTO) |
1491 | oobsize = this->ecclayout->oobavail; | |
1492 | else | |
1493 | oobsize = mtd->oobsize; | |
1494 | ||
1495 | oobcolumn = to & (mtd->oobsize - 1); | |
1496 | ||
60d84f97 | 1497 | column = to & (mtd->writesize - 1); |
60d84f97 | 1498 | |
cd5f6346 | 1499 | /* Loop until all data write */ |
9ce96908 KP |
1500 | while (1) { |
1501 | if (written < len) { | |
1502 | u_char *wbuf = (u_char *) buf; | |
60d84f97 | 1503 | |
9ce96908 KP |
1504 | thislen = min_t(int, mtd->writesize - column, len - written); |
1505 | thisooblen = min_t(int, oobsize - oobcolumn, ooblen - oobwritten); | |
d15057b7 | 1506 | |
9ce96908 | 1507 | cond_resched(); |
61a7e198 | 1508 | |
9ce96908 | 1509 | this->command(mtd, ONENAND_CMD_BUFFERRAM, to, thislen); |
60d84f97 | 1510 | |
9ce96908 KP |
1511 | /* Partial page write */ |
1512 | subpage = thislen < mtd->writesize; | |
1513 | if (subpage) { | |
1514 | memset(this->page_buf, 0xff, mtd->writesize); | |
1515 | memcpy(this->page_buf + column, buf, thislen); | |
1516 | wbuf = this->page_buf; | |
1517 | } | |
cd5f6346 | 1518 | |
9ce96908 | 1519 | this->write_bufferram(mtd, ONENAND_DATARAM, wbuf, 0, mtd->writesize); |
d15057b7 | 1520 | |
9ce96908 KP |
1521 | if (oob) { |
1522 | oobbuf = this->oob_buf; | |
d15057b7 | 1523 | |
9ce96908 KP |
1524 | /* We send data to spare ram with oobsize |
1525 | * to prevent byte access */ | |
1526 | memset(oobbuf, 0xff, mtd->oobsize); | |
1527 | if (ops->mode == MTD_OOB_AUTO) | |
1528 | onenand_fill_auto_oob(mtd, oobbuf, oob, oobcolumn, thisooblen); | |
1529 | else | |
1530 | memcpy(oobbuf + oobcolumn, oob, thisooblen); | |
d15057b7 | 1531 | |
9ce96908 KP |
1532 | oobwritten += thisooblen; |
1533 | oob += thisooblen; | |
1534 | oobcolumn = 0; | |
1535 | } else | |
1536 | oobbuf = (u_char *) ffchars; | |
1537 | ||
1538 | this->write_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); | |
d15057b7 | 1539 | } else |
9ce96908 | 1540 | ONENAND_SET_NEXT_BUFFERRAM(this); |
d15057b7 | 1541 | |
9ce96908 KP |
1542 | /* |
1543 | * 2 PLANE, MLC, and Flex-OneNAND doesn't support | |
1544 | * write-while-programe feature. | |
1545 | */ | |
1546 | if (!ONENAND_IS_2PLANE(this) && !first) { | |
1547 | ONENAND_SET_PREV_BUFFERRAM(this); | |
1548 | ||
1549 | ret = this->wait(mtd, FL_WRITING); | |
1550 | ||
1551 | /* In partial page write we don't update bufferram */ | |
1552 | onenand_update_bufferram(mtd, prev, !ret && !prev_subpage); | |
1553 | if (ret) { | |
1554 | written -= prevlen; | |
1555 | printk(KERN_ERR "onenand_write_ops_nolock: write filaed %d\n", ret); | |
1556 | break; | |
1557 | } | |
cd5f6346 | 1558 | |
9ce96908 KP |
1559 | if (written == len) { |
1560 | /* Only check verify write turn on */ | |
1561 | ret = onenand_verify(mtd, buf - len, to - len, len); | |
1562 | if (ret) | |
1563 | printk(KERN_ERR "onenand_write_ops_nolock: verify failed %d\n", ret); | |
1564 | break; | |
1565 | } | |
cd5f6346 | 1566 | |
9ce96908 KP |
1567 | ONENAND_SET_NEXT_BUFFERRAM(this); |
1568 | } | |
81f38e11 | 1569 | |
9ce96908 KP |
1570 | this->command(mtd, ONENAND_CMD_PROG, to, mtd->writesize); |
1571 | ||
1572 | /* | |
1573 | * 2 PLANE, MLC, and Flex-OneNAND wait here | |
1574 | */ | |
ee9745fc | 1575 | if (ONENAND_IS_2PLANE(this)) { |
9ce96908 | 1576 | ret = this->wait(mtd, FL_WRITING); |
cd5f6346 | 1577 | |
9ce96908 KP |
1578 | /* In partial page write we don't update bufferram */ |
1579 | onenand_update_bufferram(mtd, to, !ret && !subpage); | |
1580 | if (ret) { | |
1581 | printk(KERN_ERR "onenand_write_ops_nolock: write filaed %d\n", ret); | |
1582 | break; | |
1583 | } | |
cd5f6346 | 1584 | |
9ce96908 KP |
1585 | /* Only check verify write turn on */ |
1586 | ret = onenand_verify(mtd, buf, to, thislen); | |
1587 | if (ret) { | |
1588 | printk(KERN_ERR "onenand_write_ops_nolock: verify failed %d\n", ret); | |
1589 | break; | |
1590 | } | |
cd5f6346 | 1591 | |
9ce96908 | 1592 | written += thislen; |
81f38e11 | 1593 | |
9ce96908 KP |
1594 | if (written == len) |
1595 | break; | |
1596 | ||
1597 | } else | |
1598 | written += thislen; | |
cd5f6346 | 1599 | |
60d84f97 | 1600 | column = 0; |
9ce96908 KP |
1601 | prev_subpage = subpage; |
1602 | prev = to; | |
1603 | prevlen = thislen; | |
cd5f6346 KP |
1604 | to += thislen; |
1605 | buf += thislen; | |
9ce96908 | 1606 | first = 0; |
cd5f6346 KP |
1607 | } |
1608 | ||
9ce96908 KP |
1609 | /* In error case, clear all bufferrams */ |
1610 | if (written != len) | |
1611 | onenand_invalidate_bufferram(mtd, 0, -1); | |
1612 | ||
d15057b7 | 1613 | ops->retlen = written; |
9ce96908 | 1614 | ops->oobretlen = oobwritten; |
d5c5e78a | 1615 | |
cd5f6346 KP |
1616 | return ret; |
1617 | } | |
1618 | ||
a5e7c7b4 | 1619 | |
cd5f6346 | 1620 | /** |
49dc08ee | 1621 | * onenand_write_oob_nolock - [Internal] OneNAND write out-of-band |
cd5f6346 KP |
1622 | * @param mtd MTD device structure |
1623 | * @param to offset to write to | |
1624 | * @param len number of bytes to write | |
1625 | * @param retlen pointer to variable to store the number of written bytes | |
1626 | * @param buf the data to write | |
a5e7c7b4 | 1627 | * @param mode operation mode |
cd5f6346 KP |
1628 | * |
1629 | * OneNAND write out-of-band | |
1630 | */ | |
49dc08ee AB |
1631 | static int onenand_write_oob_nolock(struct mtd_info *mtd, loff_t to, |
1632 | struct mtd_oob_ops *ops) | |
cd5f6346 KP |
1633 | { |
1634 | struct onenand_chip *this = mtd->priv; | |
a5e7c7b4 | 1635 | int column, ret = 0, oobsize; |
cd5f6346 | 1636 | int written = 0; |
91014e9b | 1637 | u_char *oobbuf; |
12f77c9e KP |
1638 | size_t len = ops->ooblen; |
1639 | const u_char *buf = ops->oobbuf; | |
1640 | mtd_oob_mode_t mode = ops->mode; | |
1641 | ||
1642 | to += ops->ooboffs; | |
cd5f6346 | 1643 | |
49dc08ee | 1644 | DEBUG(MTD_DEBUG_LEVEL3, "onenand_write_oob_nolock: to = 0x%08x, len = %i\n", (unsigned int) to, (int) len); |
cd5f6346 KP |
1645 | |
1646 | /* Initialize retlen, in case of early exit */ | |
12f77c9e | 1647 | ops->oobretlen = 0; |
cd5f6346 | 1648 | |
a5e7c7b4 AH |
1649 | if (mode == MTD_OOB_AUTO) |
1650 | oobsize = this->ecclayout->oobavail; | |
1651 | else | |
1652 | oobsize = mtd->oobsize; | |
1653 | ||
1654 | column = to & (mtd->oobsize - 1); | |
1655 | ||
1656 | if (unlikely(column >= oobsize)) { | |
49dc08ee | 1657 | printk(KERN_ERR "onenand_write_oob_nolock: Attempted to start write outside oob\n"); |
a5e7c7b4 AH |
1658 | return -EINVAL; |
1659 | } | |
1660 | ||
52e4200a | 1661 | /* For compatibility with NAND: Do not allow write past end of page */ |
91014e9b | 1662 | if (unlikely(column + len > oobsize)) { |
49dc08ee | 1663 | printk(KERN_ERR "onenand_write_oob_nolock: " |
52e4200a AH |
1664 | "Attempt to write past end of page\n"); |
1665 | return -EINVAL; | |
1666 | } | |
1667 | ||
a5e7c7b4 AH |
1668 | /* Do not allow reads past end of device */ |
1669 | if (unlikely(to >= mtd->size || | |
1670 | column + len > ((mtd->size >> this->page_shift) - | |
1671 | (to >> this->page_shift)) * oobsize)) { | |
49dc08ee | 1672 | printk(KERN_ERR "onenand_write_oob_nolock: Attempted to write past end of device\n"); |
cd5f6346 KP |
1673 | return -EINVAL; |
1674 | } | |
1675 | ||
470bc844 | 1676 | oobbuf = this->oob_buf; |
91014e9b | 1677 | |
cd5f6346 KP |
1678 | /* Loop until all data write */ |
1679 | while (written < len) { | |
a5e7c7b4 | 1680 | int thislen = min_t(int, oobsize, len - written); |
cd5f6346 | 1681 | |
61a7e198 AB |
1682 | cond_resched(); |
1683 | ||
cd5f6346 KP |
1684 | this->command(mtd, ONENAND_CMD_BUFFERRAM, to, mtd->oobsize); |
1685 | ||
34c10609 KP |
1686 | /* We send data to spare ram with oobsize |
1687 | * to prevent byte access */ | |
91014e9b | 1688 | memset(oobbuf, 0xff, mtd->oobsize); |
a5e7c7b4 | 1689 | if (mode == MTD_OOB_AUTO) |
91014e9b | 1690 | onenand_fill_auto_oob(mtd, oobbuf, buf, column, thislen); |
a5e7c7b4 | 1691 | else |
91014e9b KP |
1692 | memcpy(oobbuf + column, buf, thislen); |
1693 | this->write_bufferram(mtd, ONENAND_SPARERAM, oobbuf, 0, mtd->oobsize); | |
cd5f6346 KP |
1694 | |
1695 | this->command(mtd, ONENAND_CMD_PROGOOB, to, mtd->oobsize); | |
1696 | ||
1697 | onenand_update_bufferram(mtd, to, 0); | |
ee9745fc KP |
1698 | if (ONENAND_IS_2PLANE(this)) { |
1699 | ONENAND_SET_BUFFERRAM1(this); | |
1700 | onenand_update_bufferram(mtd, to + this->writesize, 0); | |
1701 | } | |
cd5f6346 | 1702 | |
8e6ec690 KP |
1703 | ret = this->wait(mtd, FL_WRITING); |
1704 | if (ret) { | |
49dc08ee | 1705 | printk(KERN_ERR "onenand_write_oob_nolock: write failed %d\n", ret); |
5b4246f1 | 1706 | break; |
8e6ec690 KP |
1707 | } |
1708 | ||
91014e9b | 1709 | ret = onenand_verify_oob(mtd, oobbuf, to); |
8e6ec690 | 1710 | if (ret) { |
49dc08ee | 1711 | printk(KERN_ERR "onenand_write_oob_nolock: verify failed %d\n", ret); |
5b4246f1 | 1712 | break; |
8e6ec690 | 1713 | } |
cd5f6346 KP |
1714 | |
1715 | written += thislen; | |
cd5f6346 KP |
1716 | if (written == len) |
1717 | break; | |
1718 | ||
a5e7c7b4 | 1719 | to += mtd->writesize; |
cd5f6346 | 1720 | buf += thislen; |
a5e7c7b4 | 1721 | column = 0; |
cd5f6346 KP |
1722 | } |
1723 | ||
12f77c9e | 1724 | ops->oobretlen = written; |
d5c5e78a | 1725 | |
8e6ec690 | 1726 | return ret; |
cd5f6346 KP |
1727 | } |
1728 | ||
d15057b7 KP |
1729 | /** |
1730 | * onenand_write - [MTD Interface] write buffer to FLASH | |
1731 | * @param mtd MTD device structure | |
1732 | * @param to offset to write to | |
1733 | * @param len number of bytes to write | |
1734 | * @param retlen pointer to variable to store the number of written bytes | |
1735 | * @param buf the data to write | |
1736 | * | |
1737 | * Write with ECC | |
1738 | */ | |
1739 | static int onenand_write(struct mtd_info *mtd, loff_t to, size_t len, | |
1740 | size_t *retlen, const u_char *buf) | |
1741 | { | |
1742 | struct mtd_oob_ops ops = { | |
1743 | .len = len, | |
1744 | .ooblen = 0, | |
1745 | .datbuf = (u_char *) buf, | |
1746 | .oobbuf = NULL, | |
1747 | }; | |
1748 | int ret; | |
1749 | ||
49dc08ee AB |
1750 | onenand_get_device(mtd, FL_WRITING); |
1751 | ret = onenand_write_ops_nolock(mtd, to, &ops); | |
1752 | onenand_release_device(mtd); | |
d15057b7 | 1753 | |
49dc08ee | 1754 | *retlen = ops.retlen; |
d15057b7 KP |
1755 | return ret; |
1756 | } | |
1757 | ||
8593fbc6 TG |
1758 | /** |
1759 | * onenand_write_oob - [MTD Interface] NAND write data and/or out-of-band | |
e3da8067 KP |
1760 | * @param mtd: MTD device structure |
1761 | * @param to: offset to write | |
1762 | * @param ops: oob operation description structure | |
8593fbc6 TG |
1763 | */ |
1764 | static int onenand_write_oob(struct mtd_info *mtd, loff_t to, | |
1765 | struct mtd_oob_ops *ops) | |
1766 | { | |
49dc08ee AB |
1767 | int ret; |
1768 | ||
4f4fad27 | 1769 | switch (ops->mode) { |
a5e7c7b4 AH |
1770 | case MTD_OOB_PLACE: |
1771 | case MTD_OOB_AUTO: | |
1772 | break; | |
1773 | case MTD_OOB_RAW: | |
4f4fad27 | 1774 | /* Not implemented yet */ |
a5e7c7b4 AH |
1775 | default: |
1776 | return -EINVAL; | |
1777 | } | |
d15057b7 | 1778 | |
49dc08ee | 1779 | onenand_get_device(mtd, FL_WRITING); |
d15057b7 | 1780 | if (ops->datbuf) |
49dc08ee AB |
1781 | ret = onenand_write_ops_nolock(mtd, to, ops); |
1782 | else | |
1783 | ret = onenand_write_oob_nolock(mtd, to, ops); | |
1784 | onenand_release_device(mtd); | |
d15057b7 | 1785 | |
49dc08ee | 1786 | return ret; |
8593fbc6 TG |
1787 | } |
1788 | ||
cdc00130 | 1789 | /** |
49dc08ee | 1790 | * onenand_block_isbad_nolock - [GENERIC] Check if a block is marked bad |
cdc00130 KP |
1791 | * @param mtd MTD device structure |
1792 | * @param ofs offset from device start | |
cdc00130 KP |
1793 | * @param allowbbt 1, if its allowed to access the bbt area |
1794 | * | |
1795 | * Check, if the block is bad. Either by reading the bad block table or | |
1796 | * calling of the scan function. | |
1797 | */ | |
49dc08ee | 1798 | static int onenand_block_isbad_nolock(struct mtd_info *mtd, loff_t ofs, int allowbbt) |
cdc00130 KP |
1799 | { |
1800 | struct onenand_chip *this = mtd->priv; | |
1801 | struct bbm_info *bbm = this->bbm; | |
1802 | ||
1803 | /* Return info from the table */ | |
1804 | return bbm->isbad_bbt(mtd, ofs, allowbbt); | |
1805 | } | |
1806 | ||
cd5f6346 KP |
1807 | /** |
1808 | * onenand_erase - [MTD Interface] erase block(s) | |
1809 | * @param mtd MTD device structure | |
1810 | * @param instr erase instruction | |
1811 | * | |
1812 | * Erase one ore more blocks | |
1813 | */ | |
1814 | static int onenand_erase(struct mtd_info *mtd, struct erase_info *instr) | |
1815 | { | |
1816 | struct onenand_chip *this = mtd->priv; | |
1817 | unsigned int block_size; | |
1818 | loff_t addr; | |
1819 | int len; | |
1820 | int ret = 0; | |
1821 | ||
69423d99 | 1822 | DEBUG(MTD_DEBUG_LEVEL3, "onenand_erase: start = 0x%012llx, len = %llu\n", (unsigned long long) instr->addr, (unsigned long long) instr->len); |
cd5f6346 KP |
1823 | |
1824 | block_size = (1 << this->erase_shift); | |
1825 | ||
1826 | /* Start address must align on block boundary */ | |
1827 | if (unlikely(instr->addr & (block_size - 1))) { | |
211ac75f | 1828 | printk(KERN_ERR "onenand_erase: Unaligned address\n"); |
cd5f6346 KP |
1829 | return -EINVAL; |
1830 | } | |
1831 | ||
1832 | /* Length must align on block boundary */ | |
1833 | if (unlikely(instr->len & (block_size - 1))) { | |
211ac75f | 1834 | printk(KERN_ERR "onenand_erase: Length not block aligned\n"); |
cd5f6346 KP |
1835 | return -EINVAL; |
1836 | } | |
1837 | ||
1838 | /* Do not allow erase past end of device */ | |
1839 | if (unlikely((instr->len + instr->addr) > mtd->size)) { | |
211ac75f | 1840 | printk(KERN_ERR "onenand_erase: Erase past end of device\n"); |
cd5f6346 KP |
1841 | return -EINVAL; |
1842 | } | |
1843 | ||
bb0eb217 | 1844 | instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; |
cd5f6346 KP |
1845 | |
1846 | /* Grab the lock and see if the device is available */ | |
1847 | onenand_get_device(mtd, FL_ERASING); | |
1848 | ||
1849 | /* Loop throught the pages */ | |
1850 | len = instr->len; | |
1851 | addr = instr->addr; | |
1852 | ||
1853 | instr->state = MTD_ERASING; | |
1854 | ||
1855 | while (len) { | |
61a7e198 | 1856 | cond_resched(); |
cd5f6346 | 1857 | |
cdc00130 | 1858 | /* Check if we have a bad block, we do not erase bad blocks */ |
49dc08ee | 1859 | if (onenand_block_isbad_nolock(mtd, addr, 0)) { |
69423d99 | 1860 | printk (KERN_WARNING "onenand_erase: attempt to erase a bad block at addr 0x%012llx\n", (unsigned long long) addr); |
cdc00130 KP |
1861 | instr->state = MTD_ERASE_FAILED; |
1862 | goto erase_exit; | |
1863 | } | |
cd5f6346 KP |
1864 | |
1865 | this->command(mtd, ONENAND_CMD_ERASE, addr, block_size); | |
1866 | ||
480b9dfb AH |
1867 | onenand_invalidate_bufferram(mtd, addr, block_size); |
1868 | ||
cd5f6346 KP |
1869 | ret = this->wait(mtd, FL_ERASING); |
1870 | /* Check, if it is write protected */ | |
1871 | if (ret) { | |
211ac75f | 1872 | printk(KERN_ERR "onenand_erase: Failed erase, block %d\n", (unsigned) (addr >> this->erase_shift)); |
cd5f6346 KP |
1873 | instr->state = MTD_ERASE_FAILED; |
1874 | instr->fail_addr = addr; | |
1875 | goto erase_exit; | |
1876 | } | |
1877 | ||
1878 | len -= block_size; | |
1879 | addr += block_size; | |
1880 | } | |
1881 | ||
1882 | instr->state = MTD_ERASE_DONE; | |
1883 | ||
1884 | erase_exit: | |
1885 | ||
1886 | ret = instr->state == MTD_ERASE_DONE ? 0 : -EIO; | |
cd5f6346 KP |
1887 | |
1888 | /* Deselect and wake up anyone waiting on the device */ | |
1889 | onenand_release_device(mtd); | |
1890 | ||
3cd3a86b AH |
1891 | /* Do call back function */ |
1892 | if (!ret) | |
1893 | mtd_erase_callback(instr); | |
1894 | ||
cd5f6346 KP |
1895 | return ret; |
1896 | } | |
1897 | ||
1898 | /** | |
1899 | * onenand_sync - [MTD Interface] sync | |
1900 | * @param mtd MTD device structure | |
1901 | * | |
1902 | * Sync is actually a wait for chip ready function | |
1903 | */ | |
1904 | static void onenand_sync(struct mtd_info *mtd) | |
1905 | { | |
1906 | DEBUG(MTD_DEBUG_LEVEL3, "onenand_sync: called\n"); | |
1907 | ||
1908 | /* Grab the lock and see if the device is available */ | |
1909 | onenand_get_device(mtd, FL_SYNCING); | |
1910 | ||
1911 | /* Release it and go back */ | |
1912 | onenand_release_device(mtd); | |
1913 | } | |
1914 | ||
1915 | /** | |
1916 | * onenand_block_isbad - [MTD Interface] Check whether the block at the given offset is bad | |
1917 | * @param mtd MTD device structure | |
1918 | * @param ofs offset relative to mtd start | |
cdc00130 KP |
1919 | * |
1920 | * Check whether the block is bad | |
cd5f6346 KP |
1921 | */ |
1922 | static int onenand_block_isbad(struct mtd_info *mtd, loff_t ofs) | |
1923 | { | |
49dc08ee AB |
1924 | int ret; |
1925 | ||
cdc00130 KP |
1926 | /* Check for invalid offset */ |
1927 | if (ofs > mtd->size) | |
1928 | return -EINVAL; | |
1929 | ||
49dc08ee AB |
1930 | onenand_get_device(mtd, FL_READING); |
1931 | ret = onenand_block_isbad_nolock(mtd, ofs, 0); | |
1932 | onenand_release_device(mtd); | |
1933 | return ret; | |
cdc00130 KP |
1934 | } |
1935 | ||
1936 | /** | |
1937 | * onenand_default_block_markbad - [DEFAULT] mark a block bad | |
1938 | * @param mtd MTD device structure | |
1939 | * @param ofs offset from device start | |
1940 | * | |
1941 | * This is the default implementation, which can be overridden by | |
1942 | * a hardware specific driver. | |
1943 | */ | |
1944 | static int onenand_default_block_markbad(struct mtd_info *mtd, loff_t ofs) | |
1945 | { | |
1946 | struct onenand_chip *this = mtd->priv; | |
1947 | struct bbm_info *bbm = this->bbm; | |
1948 | u_char buf[2] = {0, 0}; | |
12f77c9e KP |
1949 | struct mtd_oob_ops ops = { |
1950 | .mode = MTD_OOB_PLACE, | |
1951 | .ooblen = 2, | |
1952 | .oobbuf = buf, | |
1953 | .ooboffs = 0, | |
1954 | }; | |
cdc00130 KP |
1955 | int block; |
1956 | ||
1957 | /* Get block number */ | |
1958 | block = ((int) ofs) >> bbm->bbt_erase_shift; | |
1959 | if (bbm->bbt) | |
1960 | bbm->bbt[block >> 2] |= 0x01 << ((block & 0x03) << 1); | |
1961 | ||
1962 | /* We write two bytes, so we dont have to mess with 16 bit access */ | |
1963 | ofs += mtd->oobsize + (bbm->badblockpos & ~0x01); | |
49dc08ee | 1964 | return onenand_write_oob_nolock(mtd, ofs, &ops); |
cd5f6346 KP |
1965 | } |
1966 | ||
1967 | /** | |
1968 | * onenand_block_markbad - [MTD Interface] Mark the block at the given offset as bad | |
1969 | * @param mtd MTD device structure | |
1970 | * @param ofs offset relative to mtd start | |
cdc00130 KP |
1971 | * |
1972 | * Mark the block as bad | |
cd5f6346 KP |
1973 | */ |
1974 | static int onenand_block_markbad(struct mtd_info *mtd, loff_t ofs) | |
1975 | { | |
cdc00130 KP |
1976 | struct onenand_chip *this = mtd->priv; |
1977 | int ret; | |
1978 | ||
1979 | ret = onenand_block_isbad(mtd, ofs); | |
1980 | if (ret) { | |
1981 | /* If it was bad already, return success and do nothing */ | |
1982 | if (ret > 0) | |
1983 | return 0; | |
1984 | return ret; | |
1985 | } | |
1986 | ||
49dc08ee AB |
1987 | onenand_get_device(mtd, FL_WRITING); |
1988 | ret = this->block_markbad(mtd, ofs); | |
1989 | onenand_release_device(mtd); | |
1990 | return ret; | |
cd5f6346 KP |
1991 | } |
1992 | ||
1993 | /** | |
08f782b6 | 1994 | * onenand_do_lock_cmd - [OneNAND Interface] Lock or unlock block(s) |
cd5f6346 KP |
1995 | * @param mtd MTD device structure |
1996 | * @param ofs offset relative to mtd start | |
08f782b6 | 1997 | * @param len number of bytes to lock or unlock |
e3da8067 | 1998 | * @param cmd lock or unlock command |
cd5f6346 | 1999 | * |
08f782b6 | 2000 | * Lock or unlock one or more blocks |
cd5f6346 | 2001 | */ |
08f782b6 | 2002 | static int onenand_do_lock_cmd(struct mtd_info *mtd, loff_t ofs, size_t len, int cmd) |
cd5f6346 KP |
2003 | { |
2004 | struct onenand_chip *this = mtd->priv; | |
2005 | int start, end, block, value, status; | |
08f782b6 | 2006 | int wp_status_mask; |
cd5f6346 KP |
2007 | |
2008 | start = ofs >> this->erase_shift; | |
2009 | end = len >> this->erase_shift; | |
2010 | ||
08f782b6 KP |
2011 | if (cmd == ONENAND_CMD_LOCK) |
2012 | wp_status_mask = ONENAND_WP_LS; | |
2013 | else | |
2014 | wp_status_mask = ONENAND_WP_US; | |
2015 | ||
cd5f6346 | 2016 | /* Continuous lock scheme */ |
28b79ff9 | 2017 | if (this->options & ONENAND_HAS_CONT_LOCK) { |
cd5f6346 KP |
2018 | /* Set start block address */ |
2019 | this->write_word(start, this->base + ONENAND_REG_START_BLOCK_ADDRESS); | |
2020 | /* Set end block address */ | |
28b79ff9 | 2021 | this->write_word(start + end - 1, this->base + ONENAND_REG_END_BLOCK_ADDRESS); |
08f782b6 KP |
2022 | /* Write lock command */ |
2023 | this->command(mtd, cmd, 0, 0); | |
cd5f6346 KP |
2024 | |
2025 | /* There's no return value */ | |
08f782b6 | 2026 | this->wait(mtd, FL_LOCKING); |
cd5f6346 KP |
2027 | |
2028 | /* Sanity check */ | |
2029 | while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS) | |
2030 | & ONENAND_CTRL_ONGO) | |
2031 | continue; | |
2032 | ||
2033 | /* Check lock status */ | |
2034 | status = this->read_word(this->base + ONENAND_REG_WP_STATUS); | |
08f782b6 | 2035 | if (!(status & wp_status_mask)) |
cd5f6346 KP |
2036 | printk(KERN_ERR "wp status = 0x%x\n", status); |
2037 | ||
2038 | return 0; | |
2039 | } | |
2040 | ||
2041 | /* Block lock scheme */ | |
28b79ff9 | 2042 | for (block = start; block < start + end; block++) { |
20ba89a3 KP |
2043 | /* Set block address */ |
2044 | value = onenand_block_address(this, block); | |
2045 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1); | |
2046 | /* Select DataRAM for DDP */ | |
2047 | value = onenand_bufferram_address(this, block); | |
2048 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); | |
cd5f6346 KP |
2049 | /* Set start block address */ |
2050 | this->write_word(block, this->base + ONENAND_REG_START_BLOCK_ADDRESS); | |
08f782b6 KP |
2051 | /* Write lock command */ |
2052 | this->command(mtd, cmd, 0, 0); | |
cd5f6346 KP |
2053 | |
2054 | /* There's no return value */ | |
08f782b6 | 2055 | this->wait(mtd, FL_LOCKING); |
cd5f6346 KP |
2056 | |
2057 | /* Sanity check */ | |
2058 | while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS) | |
2059 | & ONENAND_CTRL_ONGO) | |
2060 | continue; | |
2061 | ||
cd5f6346 KP |
2062 | /* Check lock status */ |
2063 | status = this->read_word(this->base + ONENAND_REG_WP_STATUS); | |
08f782b6 | 2064 | if (!(status & wp_status_mask)) |
cd5f6346 KP |
2065 | printk(KERN_ERR "block = %d, wp status = 0x%x\n", block, status); |
2066 | } | |
d5c5e78a | 2067 | |
cd5f6346 KP |
2068 | return 0; |
2069 | } | |
2070 | ||
08f782b6 KP |
2071 | /** |
2072 | * onenand_lock - [MTD Interface] Lock block(s) | |
2073 | * @param mtd MTD device structure | |
2074 | * @param ofs offset relative to mtd start | |
2075 | * @param len number of bytes to unlock | |
2076 | * | |
2077 | * Lock one or more blocks | |
2078 | */ | |
69423d99 | 2079 | static int onenand_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len) |
08f782b6 | 2080 | { |
34627f0e AH |
2081 | int ret; |
2082 | ||
2083 | onenand_get_device(mtd, FL_LOCKING); | |
2084 | ret = onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_LOCK); | |
2085 | onenand_release_device(mtd); | |
2086 | return ret; | |
08f782b6 KP |
2087 | } |
2088 | ||
08f782b6 KP |
2089 | /** |
2090 | * onenand_unlock - [MTD Interface] Unlock block(s) | |
2091 | * @param mtd MTD device structure | |
2092 | * @param ofs offset relative to mtd start | |
2093 | * @param len number of bytes to unlock | |
2094 | * | |
2095 | * Unlock one or more blocks | |
2096 | */ | |
69423d99 | 2097 | static int onenand_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len) |
08f782b6 | 2098 | { |
34627f0e AH |
2099 | int ret; |
2100 | ||
2101 | onenand_get_device(mtd, FL_LOCKING); | |
2102 | ret = onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK); | |
2103 | onenand_release_device(mtd); | |
2104 | return ret; | |
08f782b6 KP |
2105 | } |
2106 | ||
28b79ff9 KP |
2107 | /** |
2108 | * onenand_check_lock_status - [OneNAND Interface] Check lock status | |
2109 | * @param this onenand chip data structure | |
2110 | * | |
2111 | * Check lock status | |
2112 | */ | |
66a10506 | 2113 | static int onenand_check_lock_status(struct onenand_chip *this) |
28b79ff9 KP |
2114 | { |
2115 | unsigned int value, block, status; | |
2116 | unsigned int end; | |
2117 | ||
2118 | end = this->chipsize >> this->erase_shift; | |
2119 | for (block = 0; block < end; block++) { | |
2120 | /* Set block address */ | |
2121 | value = onenand_block_address(this, block); | |
2122 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS1); | |
2123 | /* Select DataRAM for DDP */ | |
2124 | value = onenand_bufferram_address(this, block); | |
2125 | this->write_word(value, this->base + ONENAND_REG_START_ADDRESS2); | |
2126 | /* Set start block address */ | |
2127 | this->write_word(block, this->base + ONENAND_REG_START_BLOCK_ADDRESS); | |
2128 | ||
2129 | /* Check lock status */ | |
2130 | status = this->read_word(this->base + ONENAND_REG_WP_STATUS); | |
66a10506 | 2131 | if (!(status & ONENAND_WP_US)) { |
28b79ff9 | 2132 | printk(KERN_ERR "block = %d, wp status = 0x%x\n", block, status); |
66a10506 KP |
2133 | return 0; |
2134 | } | |
28b79ff9 | 2135 | } |
66a10506 KP |
2136 | |
2137 | return 1; | |
28b79ff9 KP |
2138 | } |
2139 | ||
2140 | /** | |
2141 | * onenand_unlock_all - [OneNAND Interface] unlock all blocks | |
2142 | * @param mtd MTD device structure | |
2143 | * | |
2144 | * Unlock all blocks | |
2145 | */ | |
66a10506 | 2146 | static void onenand_unlock_all(struct mtd_info *mtd) |
28b79ff9 KP |
2147 | { |
2148 | struct onenand_chip *this = mtd->priv; | |
66a10506 KP |
2149 | loff_t ofs = 0; |
2150 | size_t len = this->chipsize; | |
28b79ff9 KP |
2151 | |
2152 | if (this->options & ONENAND_HAS_UNLOCK_ALL) { | |
10b7a2bd KP |
2153 | /* Set start block address */ |
2154 | this->write_word(0, this->base + ONENAND_REG_START_BLOCK_ADDRESS); | |
28b79ff9 KP |
2155 | /* Write unlock command */ |
2156 | this->command(mtd, ONENAND_CMD_UNLOCK_ALL, 0, 0); | |
2157 | ||
2158 | /* There's no return value */ | |
08f782b6 | 2159 | this->wait(mtd, FL_LOCKING); |
28b79ff9 KP |
2160 | |
2161 | /* Sanity check */ | |
2162 | while (this->read_word(this->base + ONENAND_REG_CTRL_STATUS) | |
2163 | & ONENAND_CTRL_ONGO) | |
2164 | continue; | |
2165 | ||
66a10506 KP |
2166 | /* Check lock status */ |
2167 | if (onenand_check_lock_status(this)) | |
2168 | return; | |
2169 | ||
28b79ff9 | 2170 | /* Workaround for all block unlock in DDP */ |
738d61f5 | 2171 | if (ONENAND_IS_DDP(this)) { |
66a10506 KP |
2172 | /* All blocks on another chip */ |
2173 | ofs = this->chipsize >> 1; | |
2174 | len = this->chipsize >> 1; | |
28b79ff9 | 2175 | } |
28b79ff9 KP |
2176 | } |
2177 | ||
66a10506 | 2178 | onenand_do_lock_cmd(mtd, ofs, len, ONENAND_CMD_UNLOCK); |
28b79ff9 KP |
2179 | } |
2180 | ||
493c6460 KP |
2181 | #ifdef CONFIG_MTD_ONENAND_OTP |
2182 | ||
2183 | /* Interal OTP operation */ | |
2184 | typedef int (*otp_op_t)(struct mtd_info *mtd, loff_t form, size_t len, | |
2185 | size_t *retlen, u_char *buf); | |
2186 | ||
2187 | /** | |
2188 | * do_otp_read - [DEFAULT] Read OTP block area | |
2189 | * @param mtd MTD device structure | |
2190 | * @param from The offset to read | |
2191 | * @param len number of bytes to read | |
2192 | * @param retlen pointer to variable to store the number of readbytes | |
2193 | * @param buf the databuffer to put/get data | |
2194 | * | |
2195 | * Read OTP block area. | |
2196 | */ | |
2197 | static int do_otp_read(struct mtd_info *mtd, loff_t from, size_t len, | |
2198 | size_t *retlen, u_char *buf) | |
2199 | { | |
2200 | struct onenand_chip *this = mtd->priv; | |
49dc08ee AB |
2201 | struct mtd_oob_ops ops = { |
2202 | .len = len, | |
2203 | .ooblen = 0, | |
2204 | .datbuf = buf, | |
2205 | .oobbuf = NULL, | |
2206 | }; | |
493c6460 KP |
2207 | int ret; |
2208 | ||
2209 | /* Enter OTP access mode */ | |
2210 | this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); | |
2211 | this->wait(mtd, FL_OTPING); | |
2212 | ||
49dc08ee | 2213 | ret = onenand_read_ops_nolock(mtd, from, &ops); |
493c6460 KP |
2214 | |
2215 | /* Exit OTP access mode */ | |
2216 | this->command(mtd, ONENAND_CMD_RESET, 0, 0); | |
2217 | this->wait(mtd, FL_RESETING); | |
2218 | ||
2219 | return ret; | |
2220 | } | |
2221 | ||
2222 | /** | |
2223 | * do_otp_write - [DEFAULT] Write OTP block area | |
2224 | * @param mtd MTD device structure | |
49dc08ee | 2225 | * @param to The offset to write |
493c6460 KP |
2226 | * @param len number of bytes to write |
2227 | * @param retlen pointer to variable to store the number of write bytes | |
2228 | * @param buf the databuffer to put/get data | |
2229 | * | |
2230 | * Write OTP block area. | |
2231 | */ | |
49dc08ee | 2232 | static int do_otp_write(struct mtd_info *mtd, loff_t to, size_t len, |
493c6460 KP |
2233 | size_t *retlen, u_char *buf) |
2234 | { | |
2235 | struct onenand_chip *this = mtd->priv; | |
2236 | unsigned char *pbuf = buf; | |
2237 | int ret; | |
49dc08ee | 2238 | struct mtd_oob_ops ops; |
493c6460 KP |
2239 | |
2240 | /* Force buffer page aligned */ | |
28318776 | 2241 | if (len < mtd->writesize) { |
493c6460 | 2242 | memcpy(this->page_buf, buf, len); |
28318776 | 2243 | memset(this->page_buf + len, 0xff, mtd->writesize - len); |
493c6460 | 2244 | pbuf = this->page_buf; |
28318776 | 2245 | len = mtd->writesize; |
493c6460 KP |
2246 | } |
2247 | ||
2248 | /* Enter OTP access mode */ | |
2249 | this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); | |
2250 | this->wait(mtd, FL_OTPING); | |
2251 | ||
49dc08ee AB |
2252 | ops.len = len; |
2253 | ops.ooblen = 0; | |
1437085c | 2254 | ops.datbuf = pbuf; |
49dc08ee AB |
2255 | ops.oobbuf = NULL; |
2256 | ret = onenand_write_ops_nolock(mtd, to, &ops); | |
2257 | *retlen = ops.retlen; | |
493c6460 KP |
2258 | |
2259 | /* Exit OTP access mode */ | |
2260 | this->command(mtd, ONENAND_CMD_RESET, 0, 0); | |
2261 | this->wait(mtd, FL_RESETING); | |
2262 | ||
2263 | return ret; | |
2264 | } | |
2265 | ||
2266 | /** | |
2267 | * do_otp_lock - [DEFAULT] Lock OTP block area | |
2268 | * @param mtd MTD device structure | |
2269 | * @param from The offset to lock | |
2270 | * @param len number of bytes to lock | |
2271 | * @param retlen pointer to variable to store the number of lock bytes | |
2272 | * @param buf the databuffer to put/get data | |
2273 | * | |
2274 | * Lock OTP block area. | |
2275 | */ | |
2276 | static int do_otp_lock(struct mtd_info *mtd, loff_t from, size_t len, | |
2277 | size_t *retlen, u_char *buf) | |
2278 | { | |
2279 | struct onenand_chip *this = mtd->priv; | |
12f77c9e KP |
2280 | struct mtd_oob_ops ops = { |
2281 | .mode = MTD_OOB_PLACE, | |
2282 | .ooblen = len, | |
2283 | .oobbuf = buf, | |
2284 | .ooboffs = 0, | |
2285 | }; | |
493c6460 KP |
2286 | int ret; |
2287 | ||
2288 | /* Enter OTP access mode */ | |
2289 | this->command(mtd, ONENAND_CMD_OTP_ACCESS, 0, 0); | |
2290 | this->wait(mtd, FL_OTPING); | |
2291 | ||
49dc08ee | 2292 | ret = onenand_write_oob_nolock(mtd, from, &ops); |
12f77c9e KP |
2293 | |
2294 | *retlen = ops.oobretlen; | |
493c6460 KP |
2295 | |
2296 | /* Exit OTP access mode */ | |
2297 | this->command(mtd, ONENAND_CMD_RESET, 0, 0); | |
2298 | this->wait(mtd, FL_RESETING); | |
2299 | ||
2300 | return ret; | |
2301 | } | |
2302 | ||
2303 | /** | |
2304 | * onenand_otp_walk - [DEFAULT] Handle OTP operation | |
2305 | * @param mtd MTD device structure | |
2306 | * @param from The offset to read/write | |
2307 | * @param len number of bytes to read/write | |
2308 | * @param retlen pointer to variable to store the number of read bytes | |
2309 | * @param buf the databuffer to put/get data | |
2310 | * @param action do given action | |
2311 | * @param mode specify user and factory | |
2312 | * | |
2313 | * Handle OTP operation. | |
2314 | */ | |
2315 | static int onenand_otp_walk(struct mtd_info *mtd, loff_t from, size_t len, | |
2316 | size_t *retlen, u_char *buf, | |
2317 | otp_op_t action, int mode) | |
2318 | { | |
2319 | struct onenand_chip *this = mtd->priv; | |
2320 | int otp_pages; | |
2321 | int density; | |
2322 | int ret = 0; | |
2323 | ||
2324 | *retlen = 0; | |
2325 | ||
e71f04fc | 2326 | density = onenand_get_density(this->device_id); |
493c6460 KP |
2327 | if (density < ONENAND_DEVICE_DENSITY_512Mb) |
2328 | otp_pages = 20; | |
2329 | else | |
2330 | otp_pages = 10; | |
2331 | ||
2332 | if (mode == MTD_OTP_FACTORY) { | |
28318776 | 2333 | from += mtd->writesize * otp_pages; |
493c6460 KP |
2334 | otp_pages = 64 - otp_pages; |
2335 | } | |
2336 | ||
2337 | /* Check User/Factory boundary */ | |
28318776 | 2338 | if (((mtd->writesize * otp_pages) - (from + len)) < 0) |
493c6460 KP |
2339 | return 0; |
2340 | ||
49dc08ee | 2341 | onenand_get_device(mtd, FL_OTPING); |
493c6460 KP |
2342 | while (len > 0 && otp_pages > 0) { |
2343 | if (!action) { /* OTP Info functions */ | |
2344 | struct otp_info *otpinfo; | |
2345 | ||
2346 | len -= sizeof(struct otp_info); | |
49dc08ee AB |
2347 | if (len <= 0) { |
2348 | ret = -ENOSPC; | |
2349 | break; | |
2350 | } | |
493c6460 KP |
2351 | |
2352 | otpinfo = (struct otp_info *) buf; | |
2353 | otpinfo->start = from; | |
28318776 | 2354 | otpinfo->length = mtd->writesize; |
493c6460 KP |
2355 | otpinfo->locked = 0; |
2356 | ||
28318776 | 2357 | from += mtd->writesize; |
493c6460 KP |
2358 | buf += sizeof(struct otp_info); |
2359 | *retlen += sizeof(struct otp_info); | |
2360 | } else { | |
2361 | size_t tmp_retlen; | |
2362 | int size = len; | |
2363 | ||
2364 | ret = action(mtd, from, len, &tmp_retlen, buf); | |
2365 | ||
2366 | buf += size; | |
2367 | len -= size; | |
2368 | *retlen += size; | |
2369 | ||
49dc08ee AB |
2370 | if (ret) |
2371 | break; | |
493c6460 KP |
2372 | } |
2373 | otp_pages--; | |
2374 | } | |
49dc08ee | 2375 | onenand_release_device(mtd); |
493c6460 | 2376 | |
49dc08ee | 2377 | return ret; |
493c6460 KP |
2378 | } |
2379 | ||
2380 | /** | |
2381 | * onenand_get_fact_prot_info - [MTD Interface] Read factory OTP info | |
2382 | * @param mtd MTD device structure | |
2383 | * @param buf the databuffer to put/get data | |
2384 | * @param len number of bytes to read | |
2385 | * | |
2386 | * Read factory OTP info. | |
2387 | */ | |
2388 | static int onenand_get_fact_prot_info(struct mtd_info *mtd, | |
2389 | struct otp_info *buf, size_t len) | |
2390 | { | |
2391 | size_t retlen; | |
2392 | int ret; | |
2393 | ||
2394 | ret = onenand_otp_walk(mtd, 0, len, &retlen, (u_char *) buf, NULL, MTD_OTP_FACTORY); | |
2395 | ||
2396 | return ret ? : retlen; | |
2397 | } | |
2398 | ||
2399 | /** | |
2400 | * onenand_read_fact_prot_reg - [MTD Interface] Read factory OTP area | |
2401 | * @param mtd MTD device structure | |
2402 | * @param from The offset to read | |
2403 | * @param len number of bytes to read | |
2404 | * @param retlen pointer to variable to store the number of read bytes | |
2405 | * @param buf the databuffer to put/get data | |
2406 | * | |
2407 | * Read factory OTP area. | |
2408 | */ | |
2409 | static int onenand_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, | |
2410 | size_t len, size_t *retlen, u_char *buf) | |
2411 | { | |
2412 | return onenand_otp_walk(mtd, from, len, retlen, buf, do_otp_read, MTD_OTP_FACTORY); | |
2413 | } | |
2414 | ||
2415 | /** | |
2416 | * onenand_get_user_prot_info - [MTD Interface] Read user OTP info | |
2417 | * @param mtd MTD device structure | |
2418 | * @param buf the databuffer to put/get data | |
2419 | * @param len number of bytes to read | |
2420 | * | |
2421 | * Read user OTP info. | |
2422 | */ | |
2423 | static int onenand_get_user_prot_info(struct mtd_info *mtd, | |
2424 | struct otp_info *buf, size_t len) | |
2425 | { | |
2426 | size_t retlen; | |
2427 | int ret; | |
2428 | ||
2429 | ret = onenand_otp_walk(mtd, 0, len, &retlen, (u_char *) buf, NULL, MTD_OTP_USER); | |
2430 | ||
2431 | return ret ? : retlen; | |
2432 | } | |
2433 | ||
2434 | /** | |
2435 | * onenand_read_user_prot_reg - [MTD Interface] Read user OTP area | |
2436 | * @param mtd MTD device structure | |
2437 | * @param from The offset to read | |
2438 | * @param len number of bytes to read | |
2439 | * @param retlen pointer to variable to store the number of read bytes | |
2440 | * @param buf the databuffer to put/get data | |
2441 | * | |
2442 | * Read user OTP area. | |
2443 | */ | |
2444 | static int onenand_read_user_prot_reg(struct mtd_info *mtd, loff_t from, | |
2445 | size_t len, size_t *retlen, u_char *buf) | |
2446 | { | |
2447 | return onenand_otp_walk(mtd, from, len, retlen, buf, do_otp_read, MTD_OTP_USER); | |
2448 | } | |
2449 | ||
2450 | /** | |
2451 | * onenand_write_user_prot_reg - [MTD Interface] Write user OTP area | |
2452 | * @param mtd MTD device structure | |
2453 | * @param from The offset to write | |
2454 | * @param len number of bytes to write | |
2455 | * @param retlen pointer to variable to store the number of write bytes | |
2456 | * @param buf the databuffer to put/get data | |
2457 | * | |
2458 | * Write user OTP area. | |
2459 | */ | |
2460 | static int onenand_write_user_prot_reg(struct mtd_info *mtd, loff_t from, | |
2461 | size_t len, size_t *retlen, u_char *buf) | |
2462 | { | |
2463 | return onenand_otp_walk(mtd, from, len, retlen, buf, do_otp_write, MTD_OTP_USER); | |
2464 | } | |
2465 | ||
2466 | /** | |
2467 | * onenand_lock_user_prot_reg - [MTD Interface] Lock user OTP area | |
2468 | * @param mtd MTD device structure | |
2469 | * @param from The offset to lock | |
2470 | * @param len number of bytes to unlock | |
2471 | * | |
2472 | * Write lock mark on spare area in page 0 in OTP block | |
2473 | */ | |
2474 | static int onenand_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, | |
2475 | size_t len) | |
2476 | { | |
69d79186 KP |
2477 | struct onenand_chip *this = mtd->priv; |
2478 | u_char *oob_buf = this->oob_buf; | |
493c6460 KP |
2479 | size_t retlen; |
2480 | int ret; | |
2481 | ||
2482 | memset(oob_buf, 0xff, mtd->oobsize); | |
2483 | /* | |
2484 | * Note: OTP lock operation | |
2485 | * OTP block : 0xXXFC | |
2486 | * 1st block : 0xXXF3 (If chip support) | |
2487 | * Both : 0xXXF0 (If chip support) | |
2488 | */ | |
2489 | oob_buf[ONENAND_OTP_LOCK_OFFSET] = 0xFC; | |
2490 | ||
2491 | /* | |
2492 | * Write lock mark to 8th word of sector0 of page0 of the spare0. | |
2493 | * We write 16 bytes spare area instead of 2 bytes. | |
2494 | */ | |
2495 | from = 0; | |
2496 | len = 16; | |
2497 | ||
2498 | ret = onenand_otp_walk(mtd, from, len, &retlen, oob_buf, do_otp_lock, MTD_OTP_USER); | |
2499 | ||
2500 | return ret ? : retlen; | |
2501 | } | |
2502 | #endif /* CONFIG_MTD_ONENAND_OTP */ | |
2503 | ||
28b79ff9 | 2504 | /** |
75384b0d | 2505 | * onenand_check_features - Check and set OneNAND features |
28b79ff9 KP |
2506 | * @param mtd MTD data structure |
2507 | * | |
75384b0d KP |
2508 | * Check and set OneNAND features |
2509 | * - lock scheme | |
ee9745fc | 2510 | * - two plane |
28b79ff9 | 2511 | */ |
75384b0d | 2512 | static void onenand_check_features(struct mtd_info *mtd) |
28b79ff9 KP |
2513 | { |
2514 | struct onenand_chip *this = mtd->priv; | |
2515 | unsigned int density, process; | |
2516 | ||
2517 | /* Lock scheme depends on density and process */ | |
e71f04fc | 2518 | density = onenand_get_density(this->device_id); |
28b79ff9 KP |
2519 | process = this->version_id >> ONENAND_VERSION_PROCESS_SHIFT; |
2520 | ||
2521 | /* Lock scheme */ | |
ee9745fc KP |
2522 | switch (density) { |
2523 | case ONENAND_DEVICE_DENSITY_4Gb: | |
2524 | this->options |= ONENAND_HAS_2PLANE; | |
2525 | ||
2526 | case ONENAND_DEVICE_DENSITY_2Gb: | |
2527 | /* 2Gb DDP don't have 2 plane */ | |
2528 | if (!ONENAND_IS_DDP(this)) | |
2529 | this->options |= ONENAND_HAS_2PLANE; | |
2530 | this->options |= ONENAND_HAS_UNLOCK_ALL; | |
2531 | ||
2532 | case ONENAND_DEVICE_DENSITY_1Gb: | |
28b79ff9 | 2533 | /* A-Die has all block unlock */ |
ee9745fc | 2534 | if (process) |
28b79ff9 | 2535 | this->options |= ONENAND_HAS_UNLOCK_ALL; |
ee9745fc KP |
2536 | break; |
2537 | ||
2538 | default: | |
2539 | /* Some OneNAND has continuous lock scheme */ | |
2540 | if (!process) | |
28b79ff9 | 2541 | this->options |= ONENAND_HAS_CONT_LOCK; |
ee9745fc | 2542 | break; |
28b79ff9 | 2543 | } |
ee9745fc KP |
2544 | |
2545 | if (this->options & ONENAND_HAS_CONT_LOCK) | |
2546 | printk(KERN_DEBUG "Lock scheme is Continuous Lock\n"); | |
2547 | if (this->options & ONENAND_HAS_UNLOCK_ALL) | |
2548 | printk(KERN_DEBUG "Chip support all block unlock\n"); | |
2549 | if (this->options & ONENAND_HAS_2PLANE) | |
2550 | printk(KERN_DEBUG "Chip has 2 plane\n"); | |
28b79ff9 KP |
2551 | } |
2552 | ||
cd5f6346 | 2553 | /** |
e3da8067 | 2554 | * onenand_print_device_info - Print device & version ID |
cd5f6346 | 2555 | * @param device device ID |
e3da8067 | 2556 | * @param version version ID |
cd5f6346 | 2557 | * |
e3da8067 | 2558 | * Print device & version ID |
cd5f6346 | 2559 | */ |
28b79ff9 | 2560 | static void onenand_print_device_info(int device, int version) |
cd5f6346 KP |
2561 | { |
2562 | int vcc, demuxed, ddp, density; | |
2563 | ||
2564 | vcc = device & ONENAND_DEVICE_VCC_MASK; | |
2565 | demuxed = device & ONENAND_DEVICE_IS_DEMUX; | |
2566 | ddp = device & ONENAND_DEVICE_IS_DDP; | |
e71f04fc | 2567 | density = onenand_get_density(device); |
cd5f6346 KP |
2568 | printk(KERN_INFO "%sOneNAND%s %dMB %sV 16-bit (0x%02x)\n", |
2569 | demuxed ? "" : "Muxed ", | |
2570 | ddp ? "(DDP)" : "", | |
2571 | (16 << density), | |
2572 | vcc ? "2.65/3.3" : "1.8", | |
2573 | device); | |
49dc08ee | 2574 | printk(KERN_INFO "OneNAND version = 0x%04x\n", version); |
cd5f6346 KP |
2575 | } |
2576 | ||
2577 | static const struct onenand_manufacturers onenand_manuf_ids[] = { | |
2578 | {ONENAND_MFR_SAMSUNG, "Samsung"}, | |
cd5f6346 KP |
2579 | }; |
2580 | ||
2581 | /** | |
2582 | * onenand_check_maf - Check manufacturer ID | |
2583 | * @param manuf manufacturer ID | |
2584 | * | |
2585 | * Check manufacturer ID | |
2586 | */ | |
2587 | static int onenand_check_maf(int manuf) | |
2588 | { | |
37b1cc39 KP |
2589 | int size = ARRAY_SIZE(onenand_manuf_ids); |
2590 | char *name; | |
cd5f6346 KP |
2591 | int i; |
2592 | ||
37b1cc39 | 2593 | for (i = 0; i < size; i++) |
cd5f6346 KP |
2594 | if (manuf == onenand_manuf_ids[i].id) |
2595 | break; | |
cd5f6346 | 2596 | |
37b1cc39 KP |
2597 | if (i < size) |
2598 | name = onenand_manuf_ids[i].name; | |
2599 | else | |
2600 | name = "Unknown"; | |
2601 | ||
2602 | printk(KERN_DEBUG "OneNAND Manufacturer: %s (0x%0x)\n", name, manuf); | |
cd5f6346 | 2603 | |
37b1cc39 | 2604 | return (i == size); |
cd5f6346 KP |
2605 | } |
2606 | ||
2607 | /** | |
2608 | * onenand_probe - [OneNAND Interface] Probe the OneNAND device | |
2609 | * @param mtd MTD device structure | |
2610 | * | |
2611 | * OneNAND detection method: | |
59c51591 | 2612 | * Compare the values from command with ones from register |
cd5f6346 KP |
2613 | */ |
2614 | static int onenand_probe(struct mtd_info *mtd) | |
2615 | { | |
2616 | struct onenand_chip *this = mtd->priv; | |
28b79ff9 | 2617 | int bram_maf_id, bram_dev_id, maf_id, dev_id, ver_id; |
cd5f6346 | 2618 | int density; |
47e777e0 KP |
2619 | int syscfg; |
2620 | ||
2621 | /* Save system configuration 1 */ | |
2622 | syscfg = this->read_word(this->base + ONENAND_REG_SYS_CFG1); | |
2623 | /* Clear Sync. Burst Read mode to read BootRAM */ | |
2624 | this->write_word((syscfg & ~ONENAND_SYS_CFG1_SYNC_READ), this->base + ONENAND_REG_SYS_CFG1); | |
cd5f6346 KP |
2625 | |
2626 | /* Send the command for reading device ID from BootRAM */ | |
2627 | this->write_word(ONENAND_CMD_READID, this->base + ONENAND_BOOTRAM); | |
2628 | ||
2629 | /* Read manufacturer and device IDs from BootRAM */ | |
2630 | bram_maf_id = this->read_word(this->base + ONENAND_BOOTRAM + 0x0); | |
2631 | bram_dev_id = this->read_word(this->base + ONENAND_BOOTRAM + 0x2); | |
2632 | ||
47e777e0 KP |
2633 | /* Reset OneNAND to read default register values */ |
2634 | this->write_word(ONENAND_CMD_RESET, this->base + ONENAND_BOOTRAM); | |
2635 | /* Wait reset */ | |
2636 | this->wait(mtd, FL_RESETING); | |
2637 | ||
2638 | /* Restore system configuration 1 */ | |
2639 | this->write_word(syscfg, this->base + ONENAND_REG_SYS_CFG1); | |
2640 | ||
cd5f6346 KP |
2641 | /* Check manufacturer ID */ |
2642 | if (onenand_check_maf(bram_maf_id)) | |
2643 | return -ENXIO; | |
2644 | ||
cd5f6346 KP |
2645 | /* Read manufacturer and device IDs from Register */ |
2646 | maf_id = this->read_word(this->base + ONENAND_REG_MANUFACTURER_ID); | |
2647 | dev_id = this->read_word(this->base + ONENAND_REG_DEVICE_ID); | |
f4f91ac3 | 2648 | ver_id = this->read_word(this->base + ONENAND_REG_VERSION_ID); |
cd5f6346 KP |
2649 | |
2650 | /* Check OneNAND device */ | |
2651 | if (maf_id != bram_maf_id || dev_id != bram_dev_id) | |
2652 | return -ENXIO; | |
2653 | ||
2654 | /* Flash device information */ | |
28b79ff9 | 2655 | onenand_print_device_info(dev_id, ver_id); |
cd5f6346 | 2656 | this->device_id = dev_id; |
28b79ff9 | 2657 | this->version_id = ver_id; |
cd5f6346 | 2658 | |
e71f04fc | 2659 | density = onenand_get_density(dev_id); |
cd5f6346 | 2660 | this->chipsize = (16 << density) << 20; |
83a36838 | 2661 | /* Set density mask. it is used for DDP */ |
738d61f5 KP |
2662 | if (ONENAND_IS_DDP(this)) |
2663 | this->density_mask = (1 << (density + 6)); | |
2664 | else | |
2665 | this->density_mask = 0; | |
cd5f6346 KP |
2666 | |
2667 | /* OneNAND page size & block size */ | |
2668 | /* The data buffer size is equal to page size */ | |
28318776 JE |
2669 | mtd->writesize = this->read_word(this->base + ONENAND_REG_DATA_BUFFER_SIZE); |
2670 | mtd->oobsize = mtd->writesize >> 5; | |
9bfbc9b2 | 2671 | /* Pages per a block are always 64 in OneNAND */ |
28318776 | 2672 | mtd->erasesize = mtd->writesize << 6; |
cd5f6346 KP |
2673 | |
2674 | this->erase_shift = ffs(mtd->erasesize) - 1; | |
28318776 | 2675 | this->page_shift = ffs(mtd->writesize) - 1; |
9bfbc9b2 | 2676 | this->page_mask = (1 << (this->erase_shift - this->page_shift)) - 1; |
ee9745fc KP |
2677 | /* It's real page size */ |
2678 | this->writesize = mtd->writesize; | |
cd5f6346 KP |
2679 | |
2680 | /* REVIST: Multichip handling */ | |
2681 | ||
2682 | mtd->size = this->chipsize; | |
2683 | ||
75384b0d KP |
2684 | /* Check OneNAND features */ |
2685 | onenand_check_features(mtd); | |
d5c5e78a | 2686 | |
ee9745fc KP |
2687 | /* |
2688 | * We emulate the 4KiB page and 256KiB erase block size | |
2689 | * But oobsize is still 64 bytes. | |
2690 | * It is only valid if you turn on 2X program support, | |
2691 | * Otherwise it will be ignored by compiler. | |
2692 | */ | |
2693 | if (ONENAND_IS_2PLANE(this)) { | |
2694 | mtd->writesize <<= 1; | |
2695 | mtd->erasesize <<= 1; | |
2696 | } | |
2697 | ||
cd5f6346 KP |
2698 | return 0; |
2699 | } | |
2700 | ||
a41371eb KP |
2701 | /** |
2702 | * onenand_suspend - [MTD Interface] Suspend the OneNAND flash | |
2703 | * @param mtd MTD device structure | |
2704 | */ | |
2705 | static int onenand_suspend(struct mtd_info *mtd) | |
2706 | { | |
2707 | return onenand_get_device(mtd, FL_PM_SUSPENDED); | |
2708 | } | |
2709 | ||
2710 | /** | |
2711 | * onenand_resume - [MTD Interface] Resume the OneNAND flash | |
2712 | * @param mtd MTD device structure | |
2713 | */ | |
2714 | static void onenand_resume(struct mtd_info *mtd) | |
2715 | { | |
2716 | struct onenand_chip *this = mtd->priv; | |
2717 | ||
2718 | if (this->state == FL_PM_SUSPENDED) | |
2719 | onenand_release_device(mtd); | |
2720 | else | |
2721 | printk(KERN_ERR "resume() called for the chip which is not" | |
2722 | "in suspended state\n"); | |
2723 | } | |
2724 | ||
cd5f6346 KP |
2725 | /** |
2726 | * onenand_scan - [OneNAND Interface] Scan for the OneNAND device | |
2727 | * @param mtd MTD device structure | |
2728 | * @param maxchips Number of chips to scan for | |
2729 | * | |
2730 | * This fills out all the not initialized function pointers | |
2731 | * with the defaults. | |
2732 | * The flash ID is read and the mtd/chip structures are | |
2733 | * filled with the appropriate values. | |
2734 | */ | |
2735 | int onenand_scan(struct mtd_info *mtd, int maxchips) | |
2736 | { | |
a5e7c7b4 | 2737 | int i; |
cd5f6346 KP |
2738 | struct onenand_chip *this = mtd->priv; |
2739 | ||
2740 | if (!this->read_word) | |
2741 | this->read_word = onenand_readw; | |
2742 | if (!this->write_word) | |
2743 | this->write_word = onenand_writew; | |
2744 | ||
2745 | if (!this->command) | |
2746 | this->command = onenand_command; | |
2747 | if (!this->wait) | |
2c22120f | 2748 | onenand_setup_wait(mtd); |
cd5f6346 KP |
2749 | |
2750 | if (!this->read_bufferram) | |
2751 | this->read_bufferram = onenand_read_bufferram; | |
2752 | if (!this->write_bufferram) | |
2753 | this->write_bufferram = onenand_write_bufferram; | |
2754 | ||
cdc00130 KP |
2755 | if (!this->block_markbad) |
2756 | this->block_markbad = onenand_default_block_markbad; | |
2757 | if (!this->scan_bbt) | |
2758 | this->scan_bbt = onenand_default_bbt; | |
2759 | ||
cd5f6346 KP |
2760 | if (onenand_probe(mtd)) |
2761 | return -ENXIO; | |
2762 | ||
52b0eea7 KP |
2763 | /* Set Sync. Burst Read after probing */ |
2764 | if (this->mmcontrol) { | |
2765 | printk(KERN_INFO "OneNAND Sync. Burst Read support\n"); | |
2766 | this->read_bufferram = onenand_sync_read_bufferram; | |
2767 | } | |
2768 | ||
532a37cf KP |
2769 | /* Allocate buffers, if necessary */ |
2770 | if (!this->page_buf) { | |
470bc844 | 2771 | this->page_buf = kzalloc(mtd->writesize, GFP_KERNEL); |
532a37cf KP |
2772 | if (!this->page_buf) { |
2773 | printk(KERN_ERR "onenand_scan(): Can't allocate page_buf\n"); | |
2774 | return -ENOMEM; | |
2775 | } | |
2776 | this->options |= ONENAND_PAGEBUF_ALLOC; | |
2777 | } | |
470bc844 KP |
2778 | if (!this->oob_buf) { |
2779 | this->oob_buf = kzalloc(mtd->oobsize, GFP_KERNEL); | |
2780 | if (!this->oob_buf) { | |
2781 | printk(KERN_ERR "onenand_scan(): Can't allocate oob_buf\n"); | |
2782 | if (this->options & ONENAND_PAGEBUF_ALLOC) { | |
2783 | this->options &= ~ONENAND_PAGEBUF_ALLOC; | |
2784 | kfree(this->page_buf); | |
2785 | } | |
2786 | return -ENOMEM; | |
2787 | } | |
2788 | this->options |= ONENAND_OOBBUF_ALLOC; | |
2789 | } | |
532a37cf | 2790 | |
cd5f6346 KP |
2791 | this->state = FL_READY; |
2792 | init_waitqueue_head(&this->wq); | |
2793 | spin_lock_init(&this->chip_lock); | |
2794 | ||
60d84f97 KP |
2795 | /* |
2796 | * Allow subpage writes up to oobsize. | |
2797 | */ | |
cd5f6346 KP |
2798 | switch (mtd->oobsize) { |
2799 | case 64: | |
5bd34c09 | 2800 | this->ecclayout = &onenand_oob_64; |
60d84f97 | 2801 | mtd->subpage_sft = 2; |
cd5f6346 KP |
2802 | break; |
2803 | ||
2804 | case 32: | |
5bd34c09 | 2805 | this->ecclayout = &onenand_oob_32; |
60d84f97 | 2806 | mtd->subpage_sft = 1; |
cd5f6346 KP |
2807 | break; |
2808 | ||
2809 | default: | |
2810 | printk(KERN_WARNING "No OOB scheme defined for oobsize %d\n", | |
2811 | mtd->oobsize); | |
60d84f97 | 2812 | mtd->subpage_sft = 0; |
cd5f6346 | 2813 | /* To prevent kernel oops */ |
5bd34c09 | 2814 | this->ecclayout = &onenand_oob_32; |
cd5f6346 KP |
2815 | break; |
2816 | } | |
2817 | ||
60d84f97 | 2818 | this->subpagesize = mtd->writesize >> mtd->subpage_sft; |
a5e7c7b4 AH |
2819 | |
2820 | /* | |
2821 | * The number of bytes available for a client to place data into | |
2822 | * the out of band area | |
2823 | */ | |
2824 | this->ecclayout->oobavail = 0; | |
ad286343 KP |
2825 | for (i = 0; i < MTD_MAX_OOBFREE_ENTRIES && |
2826 | this->ecclayout->oobfree[i].length; i++) | |
a5e7c7b4 AH |
2827 | this->ecclayout->oobavail += |
2828 | this->ecclayout->oobfree[i].length; | |
1f92267c | 2829 | mtd->oobavail = this->ecclayout->oobavail; |
a5e7c7b4 | 2830 | |
5bd34c09 | 2831 | mtd->ecclayout = this->ecclayout; |
d5c5e78a | 2832 | |
cd5f6346 KP |
2833 | /* Fill in remaining MTD driver data */ |
2834 | mtd->type = MTD_NANDFLASH; | |
5fa43394 | 2835 | mtd->flags = MTD_CAP_NANDFLASH; |
cd5f6346 KP |
2836 | mtd->erase = onenand_erase; |
2837 | mtd->point = NULL; | |
2838 | mtd->unpoint = NULL; | |
2839 | mtd->read = onenand_read; | |
2840 | mtd->write = onenand_write; | |
cd5f6346 KP |
2841 | mtd->read_oob = onenand_read_oob; |
2842 | mtd->write_oob = onenand_write_oob; | |
6c77fd64 | 2843 | mtd->panic_write = onenand_panic_write; |
493c6460 KP |
2844 | #ifdef CONFIG_MTD_ONENAND_OTP |
2845 | mtd->get_fact_prot_info = onenand_get_fact_prot_info; | |
2846 | mtd->read_fact_prot_reg = onenand_read_fact_prot_reg; | |
2847 | mtd->get_user_prot_info = onenand_get_user_prot_info; | |
2848 | mtd->read_user_prot_reg = onenand_read_user_prot_reg; | |
2849 | mtd->write_user_prot_reg = onenand_write_user_prot_reg; | |
2850 | mtd->lock_user_prot_reg = onenand_lock_user_prot_reg; | |
2851 | #endif | |
cd5f6346 | 2852 | mtd->sync = onenand_sync; |
08f782b6 | 2853 | mtd->lock = onenand_lock; |
cd5f6346 | 2854 | mtd->unlock = onenand_unlock; |
a41371eb KP |
2855 | mtd->suspend = onenand_suspend; |
2856 | mtd->resume = onenand_resume; | |
cd5f6346 KP |
2857 | mtd->block_isbad = onenand_block_isbad; |
2858 | mtd->block_markbad = onenand_block_markbad; | |
2859 | mtd->owner = THIS_MODULE; | |
2860 | ||
2861 | /* Unlock whole block */ | |
28b79ff9 | 2862 | onenand_unlock_all(mtd); |
cd5f6346 | 2863 | |
cdc00130 | 2864 | return this->scan_bbt(mtd); |
cd5f6346 KP |
2865 | } |
2866 | ||
2867 | /** | |
2868 | * onenand_release - [OneNAND Interface] Free resources held by the OneNAND device | |
2869 | * @param mtd MTD device structure | |
2870 | */ | |
2871 | void onenand_release(struct mtd_info *mtd) | |
2872 | { | |
532a37cf KP |
2873 | struct onenand_chip *this = mtd->priv; |
2874 | ||
cd5f6346 KP |
2875 | #ifdef CONFIG_MTD_PARTITIONS |
2876 | /* Deregister partitions */ | |
2877 | del_mtd_partitions (mtd); | |
2878 | #endif | |
2879 | /* Deregister the device */ | |
2880 | del_mtd_device (mtd); | |
532a37cf KP |
2881 | |
2882 | /* Free bad block table memory, if allocated */ | |
f00b0046 AH |
2883 | if (this->bbm) { |
2884 | struct bbm_info *bbm = this->bbm; | |
2885 | kfree(bbm->bbt); | |
532a37cf | 2886 | kfree(this->bbm); |
f00b0046 | 2887 | } |
470bc844 | 2888 | /* Buffers allocated by onenand_scan */ |
532a37cf KP |
2889 | if (this->options & ONENAND_PAGEBUF_ALLOC) |
2890 | kfree(this->page_buf); | |
470bc844 KP |
2891 | if (this->options & ONENAND_OOBBUF_ALLOC) |
2892 | kfree(this->oob_buf); | |
cd5f6346 KP |
2893 | } |
2894 | ||
2895 | EXPORT_SYMBOL_GPL(onenand_scan); | |
2896 | EXPORT_SYMBOL_GPL(onenand_release); | |
2897 | ||
2898 | MODULE_LICENSE("GPL"); | |
2899 | MODULE_AUTHOR("Kyungmin Park <kyungmin.park@samsung.com>"); | |
2900 | MODULE_DESCRIPTION("Generic OneNAND flash driver code"); |