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494a43bb AO |
1 | /* |
2 | * NAND Flash Controller Device Driver | |
3 | * Copyright (c) 2009, Intel Corporation and its suppliers. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License along with | |
15 | * this program; if not, write to the Free Software Foundation, Inc., | |
16 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
17 | * | |
18 | */ | |
19 | ||
20 | #include <linux/fs.h> | |
21 | #include <linux/slab.h> | |
22 | #include "flash.h" | |
23 | #include "ffsdefs.h" | |
24 | #include "lld_emu.h" | |
25 | #include "lld.h" | |
26 | #if CMD_DMA | |
27 | #include "lld_cdma.h" | |
e8030297 NK |
28 | #if FLASH_EMU |
29 | u32 totalUsedBanks; | |
30 | u32 valid_banks[MAX_CHANS]; | |
31 | #endif | |
494a43bb AO |
32 | #endif |
33 | ||
34 | #define GLOB_LLD_PAGES 64 | |
35 | #define GLOB_LLD_PAGE_SIZE (512+16) | |
36 | #define GLOB_LLD_PAGE_DATA_SIZE 512 | |
37 | #define GLOB_LLD_BLOCKS 2048 | |
38 | ||
494a43bb AO |
39 | #if FLASH_EMU /* This is for entire module */ |
40 | ||
41 | static u8 *flash_memory[GLOB_LLD_BLOCKS * GLOB_LLD_PAGES]; | |
42 | ||
43 | /* Read nand emu file and then fill it's content to flash_memory */ | |
44 | int emu_load_file_to_mem(void) | |
45 | { | |
46 | mm_segment_t fs; | |
47 | struct file *nef_filp = NULL; | |
48 | struct inode *inode = NULL; | |
49 | loff_t nef_size = 0; | |
50 | loff_t tmp_file_offset, file_offset; | |
51 | ssize_t nread; | |
52 | int i, rc = -EINVAL; | |
53 | ||
54 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
55 | __FILE__, __LINE__, __func__); | |
56 | ||
57 | fs = get_fs(); | |
58 | set_fs(get_ds()); | |
59 | ||
60 | nef_filp = filp_open("/root/nand_emu_file", O_RDWR | O_LARGEFILE, 0); | |
61 | if (IS_ERR(nef_filp)) { | |
62 | printk(KERN_ERR "filp_open error: " | |
63 | "Unable to open nand emu file!\n"); | |
64 | return PTR_ERR(nef_filp); | |
65 | } | |
66 | ||
67 | if (nef_filp->f_path.dentry) { | |
68 | inode = nef_filp->f_path.dentry->d_inode; | |
69 | } else { | |
70 | printk(KERN_ERR "Can not get valid inode!\n"); | |
71 | goto out; | |
72 | } | |
73 | ||
74 | nef_size = i_size_read(inode->i_mapping->host); | |
75 | if (nef_size <= 0) { | |
76 | printk(KERN_ERR "Invalid nand emu file size: " | |
77 | "0x%llx\n", nef_size); | |
78 | goto out; | |
79 | } else { | |
80 | nand_dbg_print(NAND_DBG_DEBUG, "nand emu file size: %lld\n", | |
81 | nef_size); | |
82 | } | |
83 | ||
84 | file_offset = 0; | |
85 | for (i = 0; i < GLOB_LLD_BLOCKS * GLOB_LLD_PAGES; i++) { | |
86 | tmp_file_offset = file_offset; | |
87 | nread = vfs_read(nef_filp, | |
88 | (char __user *)flash_memory[i], | |
89 | GLOB_LLD_PAGE_SIZE, &tmp_file_offset); | |
90 | if (nread < GLOB_LLD_PAGE_SIZE) { | |
91 | printk(KERN_ERR "%s, Line %d - " | |
92 | "nand emu file partial read: " | |
93 | "%d bytes\n", __FILE__, __LINE__, (int)nread); | |
94 | goto out; | |
95 | } | |
96 | file_offset += GLOB_LLD_PAGE_SIZE; | |
97 | } | |
98 | rc = 0; | |
99 | ||
100 | out: | |
101 | filp_close(nef_filp, current->files); | |
102 | set_fs(fs); | |
103 | return rc; | |
104 | } | |
105 | ||
106 | /* Write contents of flash_memory to nand emu file */ | |
107 | int emu_write_mem_to_file(void) | |
108 | { | |
109 | mm_segment_t fs; | |
110 | struct file *nef_filp = NULL; | |
111 | struct inode *inode = NULL; | |
112 | loff_t nef_size = 0; | |
113 | loff_t tmp_file_offset, file_offset; | |
114 | ssize_t nwritten; | |
115 | int i, rc = -EINVAL; | |
116 | ||
117 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
118 | __FILE__, __LINE__, __func__); | |
119 | ||
120 | fs = get_fs(); | |
121 | set_fs(get_ds()); | |
122 | ||
123 | nef_filp = filp_open("/root/nand_emu_file", O_RDWR | O_LARGEFILE, 0); | |
124 | if (IS_ERR(nef_filp)) { | |
125 | printk(KERN_ERR "filp_open error: " | |
126 | "Unable to open nand emu file!\n"); | |
127 | return PTR_ERR(nef_filp); | |
128 | } | |
129 | ||
130 | if (nef_filp->f_path.dentry) { | |
131 | inode = nef_filp->f_path.dentry->d_inode; | |
132 | } else { | |
133 | printk(KERN_ERR "Invalid " "nef_filp->f_path.dentry value!\n"); | |
134 | goto out; | |
135 | } | |
136 | ||
137 | nef_size = i_size_read(inode->i_mapping->host); | |
138 | if (nef_size <= 0) { | |
139 | printk(KERN_ERR "Invalid " | |
140 | "nand emu file size: 0x%llx\n", nef_size); | |
141 | goto out; | |
142 | } else { | |
143 | nand_dbg_print(NAND_DBG_DEBUG, "nand emu file size: " | |
144 | "%lld\n", nef_size); | |
145 | } | |
146 | ||
147 | file_offset = 0; | |
148 | for (i = 0; i < GLOB_LLD_BLOCKS * GLOB_LLD_PAGES; i++) { | |
149 | tmp_file_offset = file_offset; | |
150 | nwritten = vfs_write(nef_filp, | |
151 | (char __user *)flash_memory[i], | |
152 | GLOB_LLD_PAGE_SIZE, &tmp_file_offset); | |
153 | if (nwritten < GLOB_LLD_PAGE_SIZE) { | |
154 | printk(KERN_ERR "%s, Line %d - " | |
155 | "nand emu file partial write: " | |
156 | "%d bytes\n", __FILE__, __LINE__, (int)nwritten); | |
157 | goto out; | |
158 | } | |
159 | file_offset += GLOB_LLD_PAGE_SIZE; | |
160 | } | |
161 | rc = 0; | |
162 | ||
163 | out: | |
164 | filp_close(nef_filp, current->files); | |
165 | set_fs(fs); | |
166 | return rc; | |
167 | } | |
168 | ||
169 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
170 | * Function: emu_Flash_Init | |
171 | * Inputs: none | |
172 | * Outputs: PASS=0 (notice 0=ok here) | |
173 | * Description: Creates & initializes the flash RAM array. | |
174 | * | |
175 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
176 | u16 emu_Flash_Init(void) | |
177 | { | |
178 | int i; | |
179 | ||
180 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
181 | __FILE__, __LINE__, __func__); | |
182 | ||
183 | flash_memory[0] = (u8 *)vmalloc(GLOB_LLD_PAGE_SIZE * | |
184 | GLOB_LLD_BLOCKS * | |
185 | GLOB_LLD_PAGES * | |
186 | sizeof(u8)); | |
187 | if (!flash_memory[0]) { | |
188 | printk(KERN_ERR "Fail to allocate memory " | |
189 | "for nand emulator!\n"); | |
190 | return ERR; | |
191 | } | |
192 | ||
193 | memset((char *)(flash_memory[0]), 0xFF, | |
194 | GLOB_LLD_PAGE_SIZE * GLOB_LLD_BLOCKS * GLOB_LLD_PAGES * | |
195 | sizeof(u8)); | |
196 | ||
197 | for (i = 1; i < GLOB_LLD_BLOCKS * GLOB_LLD_PAGES; i++) | |
198 | flash_memory[i] = flash_memory[i - 1] + GLOB_LLD_PAGE_SIZE; | |
199 | ||
200 | emu_load_file_to_mem(); /* Load nand emu file to mem */ | |
201 | ||
202 | return PASS; | |
203 | } | |
204 | ||
205 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
206 | * Function: emu_Flash_Release | |
207 | * Inputs: none | |
208 | * Outputs: PASS=0 (notice 0=ok here) | |
209 | * Description: Releases the flash. | |
210 | * | |
211 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
212 | int emu_Flash_Release(void) | |
213 | { | |
214 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
215 | __FILE__, __LINE__, __func__); | |
216 | ||
217 | emu_write_mem_to_file(); /* Write back mem to nand emu file */ | |
218 | ||
219 | vfree(flash_memory[0]); | |
220 | return PASS; | |
221 | } | |
222 | ||
223 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
224 | * Function: emu_Read_Device_ID | |
225 | * Inputs: none | |
226 | * Outputs: PASS=1 FAIL=0 | |
227 | * Description: Reads the info from the controller registers. | |
228 | * Sets up DeviceInfo structure with device parameters | |
229 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
230 | ||
231 | u16 emu_Read_Device_ID(void) | |
232 | { | |
233 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
234 | __FILE__, __LINE__, __func__); | |
235 | ||
236 | DeviceInfo.wDeviceMaker = 0; | |
237 | DeviceInfo.wDeviceType = 8; | |
238 | DeviceInfo.wSpectraStartBlock = 36; | |
239 | DeviceInfo.wSpectraEndBlock = GLOB_LLD_BLOCKS - 1; | |
240 | DeviceInfo.wTotalBlocks = GLOB_LLD_BLOCKS; | |
241 | DeviceInfo.wPagesPerBlock = GLOB_LLD_PAGES; | |
242 | DeviceInfo.wPageSize = GLOB_LLD_PAGE_SIZE; | |
243 | DeviceInfo.wPageDataSize = GLOB_LLD_PAGE_DATA_SIZE; | |
244 | DeviceInfo.wPageSpareSize = GLOB_LLD_PAGE_SIZE - | |
245 | GLOB_LLD_PAGE_DATA_SIZE; | |
246 | DeviceInfo.wBlockSize = DeviceInfo.wPageSize * GLOB_LLD_PAGES; | |
247 | DeviceInfo.wBlockDataSize = DeviceInfo.wPageDataSize * GLOB_LLD_PAGES; | |
248 | DeviceInfo.wDataBlockNum = (u32) (DeviceInfo.wSpectraEndBlock - | |
249 | DeviceInfo.wSpectraStartBlock | |
250 | + 1); | |
251 | DeviceInfo.MLCDevice = 1; /* Emulate MLC device */ | |
252 | DeviceInfo.nBitsInPageNumber = | |
253 | (u8)GLOB_Calc_Used_Bits(DeviceInfo.wPagesPerBlock); | |
254 | DeviceInfo.nBitsInPageDataSize = | |
255 | (u8)GLOB_Calc_Used_Bits(DeviceInfo.wPageDataSize); | |
256 | DeviceInfo.nBitsInBlockDataSize = | |
257 | (u8)GLOB_Calc_Used_Bits(DeviceInfo.wBlockDataSize); | |
258 | ||
259 | #if CMD_DMA | |
260 | totalUsedBanks = 4; | |
261 | valid_banks[0] = 1; | |
262 | valid_banks[1] = 1; | |
263 | valid_banks[2] = 1; | |
264 | valid_banks[3] = 1; | |
265 | #endif | |
266 | ||
267 | return PASS; | |
268 | } | |
269 | ||
270 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
271 | * Function: emu_Flash_Reset | |
272 | * Inputs: none | |
273 | * Outputs: PASS=0 (notice 0=ok here) | |
274 | * Description: Reset the flash | |
275 | * | |
276 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
277 | u16 emu_Flash_Reset(void) | |
278 | { | |
279 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
280 | __FILE__, __LINE__, __func__); | |
281 | ||
282 | return PASS; | |
283 | } | |
284 | ||
285 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
286 | * Function: emu_Erase_Block | |
287 | * Inputs: Address | |
288 | * Outputs: PASS=0 (notice 0=ok here) | |
289 | * Description: Erase a block | |
290 | * | |
291 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
292 | u16 emu_Erase_Block(u32 block_add) | |
293 | { | |
294 | int i; | |
295 | ||
296 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
297 | __FILE__, __LINE__, __func__); | |
298 | ||
299 | if (block_add >= DeviceInfo.wTotalBlocks) { | |
300 | printk(KERN_ERR "emu_Erase_Block error! " | |
301 | "Too big block address: %d\n", block_add); | |
302 | return FAIL; | |
303 | } | |
304 | ||
305 | nand_dbg_print(NAND_DBG_DEBUG, "Erasing block %d\n", | |
306 | (int)block_add); | |
307 | ||
308 | for (i = block_add * GLOB_LLD_PAGES; | |
309 | i < ((block_add + 1) * GLOB_LLD_PAGES); i++) { | |
310 | if (flash_memory[i]) { | |
311 | memset((u8 *)(flash_memory[i]), 0xFF, | |
312 | DeviceInfo.wPageSize * sizeof(u8)); | |
313 | } | |
314 | } | |
315 | ||
316 | return PASS; | |
317 | } | |
318 | ||
319 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
320 | * Function: emu_Write_Page_Main | |
321 | * Inputs: Write buffer address pointer | |
322 | * Block number | |
323 | * Page number | |
324 | * Number of pages to process | |
325 | * Outputs: PASS=0 (notice 0=ok here) | |
326 | * Description: Write the data in the buffer to main area of flash | |
327 | * | |
328 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
329 | u16 emu_Write_Page_Main(u8 *write_data, u32 Block, | |
330 | u16 Page, u16 PageCount) | |
331 | { | |
332 | int i; | |
333 | ||
334 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
335 | __FILE__, __LINE__, __func__); | |
336 | ||
337 | if (Block >= DeviceInfo.wTotalBlocks) | |
338 | return FAIL; | |
339 | ||
340 | if (Page + PageCount > DeviceInfo.wPagesPerBlock) | |
341 | return FAIL; | |
342 | ||
343 | nand_dbg_print(NAND_DBG_DEBUG, "emu_Write_Page_Main: " | |
344 | "lba %u Page %u PageCount %u\n", | |
345 | (unsigned int)Block, | |
346 | (unsigned int)Page, (unsigned int)PageCount); | |
347 | ||
348 | for (i = 0; i < PageCount; i++) { | |
349 | if (NULL == flash_memory[Block * GLOB_LLD_PAGES + Page]) { | |
350 | printk(KERN_ERR "Run out of memory\n"); | |
351 | return FAIL; | |
352 | } | |
353 | memcpy((u8 *) (flash_memory[Block * GLOB_LLD_PAGES + Page]), | |
354 | write_data, DeviceInfo.wPageDataSize); | |
355 | write_data += DeviceInfo.wPageDataSize; | |
356 | Page++; | |
357 | } | |
358 | ||
359 | return PASS; | |
360 | } | |
361 | ||
362 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
363 | * Function: emu_Read_Page_Main | |
364 | * Inputs: Read buffer address pointer | |
365 | * Block number | |
366 | * Page number | |
367 | * Number of pages to process | |
368 | * Outputs: PASS=0 (notice 0=ok here) | |
369 | * Description: Read the data from the flash main area to the buffer | |
370 | * | |
371 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
372 | u16 emu_Read_Page_Main(u8 *read_data, u32 Block, | |
373 | u16 Page, u16 PageCount) | |
374 | { | |
375 | int i; | |
376 | ||
377 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
378 | __FILE__, __LINE__, __func__); | |
379 | ||
380 | if (Block >= DeviceInfo.wTotalBlocks) | |
381 | return FAIL; | |
382 | ||
383 | if (Page + PageCount > DeviceInfo.wPagesPerBlock) | |
384 | return FAIL; | |
385 | ||
386 | nand_dbg_print(NAND_DBG_DEBUG, "emu_Read_Page_Main: " | |
387 | "lba %u Page %u PageCount %u\n", | |
388 | (unsigned int)Block, | |
389 | (unsigned int)Page, (unsigned int)PageCount); | |
390 | ||
391 | for (i = 0; i < PageCount; i++) { | |
392 | if (NULL == flash_memory[Block * GLOB_LLD_PAGES + Page]) { | |
393 | memset(read_data, 0xFF, DeviceInfo.wPageDataSize); | |
394 | } else { | |
395 | memcpy(read_data, | |
396 | (u8 *) (flash_memory[Block * GLOB_LLD_PAGES | |
397 | + Page]), | |
398 | DeviceInfo.wPageDataSize); | |
399 | } | |
400 | read_data += DeviceInfo.wPageDataSize; | |
401 | Page++; | |
402 | } | |
403 | ||
404 | return PASS; | |
405 | } | |
406 | ||
407 | #ifndef ELDORA | |
408 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
409 | * Function: emu_Read_Page_Main_Spare | |
410 | * Inputs: Write Buffer | |
411 | * Address | |
412 | * Buffer size | |
413 | * Outputs: PASS=0 (notice 0=ok here) | |
414 | * Description: Read from flash main+spare area | |
415 | * | |
416 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
417 | u16 emu_Read_Page_Main_Spare(u8 *read_data, u32 Block, | |
418 | u16 Page, u16 PageCount) | |
419 | { | |
420 | int i; | |
421 | ||
422 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
423 | __FILE__, __LINE__, __func__); | |
424 | ||
425 | if (Block >= DeviceInfo.wTotalBlocks) { | |
426 | printk(KERN_ERR "Read Page Main+Spare " | |
427 | "Error: Block Address too big\n"); | |
428 | return FAIL; | |
429 | } | |
430 | ||
431 | if (Page + PageCount > DeviceInfo.wPagesPerBlock) { | |
432 | printk(KERN_ERR "Read Page Main+Spare " | |
433 | "Error: Page number too big\n"); | |
434 | return FAIL; | |
435 | } | |
436 | ||
437 | nand_dbg_print(NAND_DBG_DEBUG, "Read Page Main + Spare - " | |
438 | "No. of pages %u block %u start page %u\n", | |
439 | (unsigned int)PageCount, | |
440 | (unsigned int)Block, (unsigned int)Page); | |
441 | ||
442 | for (i = 0; i < PageCount; i++) { | |
443 | if (NULL == flash_memory[Block * GLOB_LLD_PAGES + Page]) { | |
444 | memset(read_data, 0xFF, DeviceInfo.wPageSize); | |
445 | } else { | |
446 | memcpy(read_data, (u8 *) (flash_memory[Block * | |
447 | GLOB_LLD_PAGES | |
448 | + Page]), | |
449 | DeviceInfo.wPageSize); | |
450 | } | |
451 | ||
452 | read_data += DeviceInfo.wPageSize; | |
453 | Page++; | |
454 | } | |
455 | ||
456 | return PASS; | |
457 | } | |
458 | ||
459 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
460 | * Function: emu_Write_Page_Main_Spare | |
461 | * Inputs: Write buffer | |
462 | * address | |
463 | * buffer length | |
464 | * Outputs: PASS=0 (notice 0=ok here) | |
465 | * Description: Write the buffer to main+spare area of flash | |
466 | * | |
467 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
468 | u16 emu_Write_Page_Main_Spare(u8 *write_data, u32 Block, | |
469 | u16 Page, u16 page_count) | |
470 | { | |
471 | u16 i; | |
472 | ||
473 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
474 | __FILE__, __LINE__, __func__); | |
475 | ||
476 | if (Block >= DeviceInfo.wTotalBlocks) { | |
477 | printk(KERN_ERR "Write Page Main + Spare " | |
478 | "Error: Block Address too big\n"); | |
479 | return FAIL; | |
480 | } | |
481 | ||
482 | if (Page + page_count > DeviceInfo.wPagesPerBlock) { | |
483 | printk(KERN_ERR "Write Page Main + Spare " | |
484 | "Error: Page number too big\n"); | |
485 | return FAIL; | |
486 | } | |
487 | ||
488 | nand_dbg_print(NAND_DBG_DEBUG, "Write Page Main+Spare - " | |
489 | "No. of pages %u block %u start page %u\n", | |
490 | (unsigned int)page_count, | |
491 | (unsigned int)Block, (unsigned int)Page); | |
492 | ||
493 | for (i = 0; i < page_count; i++) { | |
494 | if (NULL == flash_memory[Block * GLOB_LLD_PAGES + Page]) { | |
495 | printk(KERN_ERR "Run out of memory!\n"); | |
496 | return FAIL; | |
497 | } | |
498 | memcpy((u8 *) (flash_memory[Block * GLOB_LLD_PAGES + Page]), | |
499 | write_data, DeviceInfo.wPageSize); | |
500 | write_data += DeviceInfo.wPageSize; | |
501 | Page++; | |
502 | } | |
503 | ||
504 | return PASS; | |
505 | } | |
506 | ||
507 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
508 | * Function: emu_Write_Page_Spare | |
509 | * Inputs: Write buffer | |
510 | * Address | |
511 | * buffer size | |
512 | * Outputs: PASS=0 (notice 0=ok here) | |
513 | * Description: Write the buffer in the spare area | |
514 | * | |
515 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
516 | u16 emu_Write_Page_Spare(u8 *write_data, u32 Block, | |
517 | u16 Page, u16 PageCount) | |
518 | { | |
519 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
520 | __FILE__, __LINE__, __func__); | |
521 | ||
522 | if (Block >= DeviceInfo.wTotalBlocks) { | |
523 | printk(KERN_ERR "Read Page Spare Error: " | |
524 | "Block Address too big\n"); | |
525 | return FAIL; | |
526 | } | |
527 | ||
528 | if (Page + PageCount > DeviceInfo.wPagesPerBlock) { | |
529 | printk(KERN_ERR "Read Page Spare Error: " | |
530 | "Page number too big\n"); | |
531 | return FAIL; | |
532 | } | |
533 | ||
534 | nand_dbg_print(NAND_DBG_DEBUG, "Write Page Spare- " | |
535 | "block %u page %u\n", | |
536 | (unsigned int)Block, (unsigned int)Page); | |
537 | ||
538 | if (NULL == flash_memory[Block * GLOB_LLD_PAGES + Page]) { | |
539 | printk(KERN_ERR "Run out of memory!\n"); | |
540 | return FAIL; | |
541 | } | |
542 | ||
543 | memcpy((u8 *) (flash_memory[Block * GLOB_LLD_PAGES + Page] + | |
544 | DeviceInfo.wPageDataSize), write_data, | |
545 | (DeviceInfo.wPageSize - DeviceInfo.wPageDataSize)); | |
546 | ||
547 | return PASS; | |
548 | } | |
549 | ||
550 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
551 | * Function: emu_Read_Page_Spare | |
552 | * Inputs: Write Buffer | |
553 | * Address | |
554 | * Buffer size | |
555 | * Outputs: PASS=0 (notice 0=ok here) | |
556 | * Description: Read data from the spare area | |
557 | * | |
558 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
559 | u16 emu_Read_Page_Spare(u8 *write_data, u32 Block, | |
560 | u16 Page, u16 PageCount) | |
561 | { | |
562 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
563 | __FILE__, __LINE__, __func__); | |
564 | ||
565 | if (Block >= DeviceInfo.wTotalBlocks) { | |
566 | printk(KERN_ERR "Read Page Spare " | |
567 | "Error: Block Address too big\n"); | |
568 | return FAIL; | |
569 | } | |
570 | ||
571 | if (Page + PageCount > DeviceInfo.wPagesPerBlock) { | |
572 | printk(KERN_ERR "Read Page Spare " | |
573 | "Error: Page number too big\n"); | |
574 | return FAIL; | |
575 | } | |
576 | ||
577 | nand_dbg_print(NAND_DBG_DEBUG, "Read Page Spare- " | |
578 | "block %u page %u\n", | |
579 | (unsigned int)Block, (unsigned int)Page); | |
580 | ||
581 | if (NULL == flash_memory[Block * GLOB_LLD_PAGES + Page]) { | |
582 | memset(write_data, 0xFF, | |
583 | (DeviceInfo.wPageSize - DeviceInfo.wPageDataSize)); | |
584 | } else { | |
585 | memcpy(write_data, | |
586 | (u8 *) (flash_memory[Block * GLOB_LLD_PAGES + Page] | |
587 | + DeviceInfo.wPageDataSize), | |
588 | (DeviceInfo.wPageSize - DeviceInfo.wPageDataSize)); | |
589 | } | |
590 | ||
591 | return PASS; | |
592 | } | |
593 | ||
594 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
595 | * Function: emu_Enable_Disable_Interrupts | |
596 | * Inputs: enable or disable | |
597 | * Outputs: none | |
598 | * Description: NOP | |
599 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
600 | void emu_Enable_Disable_Interrupts(u16 INT_ENABLE) | |
601 | { | |
602 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
603 | __FILE__, __LINE__, __func__); | |
604 | } | |
605 | ||
606 | u16 emu_Get_Bad_Block(u32 block) | |
607 | { | |
608 | return 0; | |
609 | } | |
610 | ||
611 | #if CMD_DMA | |
612 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
613 | * Support for CDMA functions | |
614 | ************************************ | |
615 | * emu_CDMA_Flash_Init | |
616 | * CDMA_process_data command (use LLD_CDMA) | |
617 | * CDMA_MemCopy_CMD (use LLD_CDMA) | |
618 | * emu_CDMA_execute all commands | |
619 | * emu_CDMA_Event_Status | |
620 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
621 | u16 emu_CDMA_Flash_Init(void) | |
622 | { | |
623 | u16 i; | |
624 | ||
625 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
626 | __FILE__, __LINE__, __func__); | |
627 | ||
628 | for (i = 0; i < MAX_DESCS + MAX_CHANS; i++) { | |
629 | PendingCMD[i].CMD = 0; | |
630 | PendingCMD[i].Tag = 0; | |
631 | PendingCMD[i].DataAddr = 0; | |
632 | PendingCMD[i].Block = 0; | |
633 | PendingCMD[i].Page = 0; | |
634 | PendingCMD[i].PageCount = 0; | |
635 | PendingCMD[i].DataDestAddr = 0; | |
636 | PendingCMD[i].DataSrcAddr = 0; | |
637 | PendingCMD[i].MemCopyByteCnt = 0; | |
638 | PendingCMD[i].ChanSync[0] = 0; | |
639 | PendingCMD[i].ChanSync[1] = 0; | |
640 | PendingCMD[i].ChanSync[2] = 0; | |
641 | PendingCMD[i].ChanSync[3] = 0; | |
642 | PendingCMD[i].ChanSync[4] = 0; | |
643 | PendingCMD[i].Status = 3; | |
644 | } | |
645 | ||
646 | return PASS; | |
647 | } | |
648 | ||
649 | static void emu_isr(int irq, void *dev_id) | |
650 | { | |
651 | /* TODO: ... */ | |
652 | } | |
653 | ||
654 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
655 | * Function: CDMA_Execute_CMDs | |
656 | * Inputs: tag_count: the number of pending cmds to do | |
657 | * Outputs: PASS/FAIL | |
658 | * Description: execute each command in the pending CMD array | |
659 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
660 | u16 emu_CDMA_Execute_CMDs(u16 tag_count) | |
661 | { | |
662 | u16 i, j; | |
663 | u8 CMD; /* cmd parameter */ | |
664 | u8 *data; | |
665 | u32 block; | |
666 | u16 page; | |
667 | u16 count; | |
668 | u16 status = PASS; | |
669 | ||
670 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
671 | __FILE__, __LINE__, __func__); | |
672 | ||
673 | nand_dbg_print(NAND_DBG_TRACE, "At start of Execute CMDs: " | |
674 | "Tag Count %u\n", tag_count); | |
675 | ||
676 | for (i = 0; i < totalUsedBanks; i++) { | |
677 | PendingCMD[i].CMD = DUMMY_CMD; | |
678 | PendingCMD[i].Tag = 0xFF; | |
679 | PendingCMD[i].Block = | |
680 | (DeviceInfo.wTotalBlocks / totalUsedBanks) * i; | |
681 | ||
682 | for (j = 0; j <= MAX_CHANS; j++) | |
683 | PendingCMD[i].ChanSync[j] = 0; | |
684 | } | |
685 | ||
686 | CDMA_Execute_CMDs(tag_count); | |
687 | ||
688 | print_pending_cmds(tag_count); | |
689 | ||
690 | #if DEBUG_SYNC | |
691 | } | |
692 | debug_sync_cnt++; | |
693 | #endif | |
694 | ||
695 | for (i = MAX_CHANS; | |
696 | i < tag_count + MAX_CHANS; i++) { | |
697 | CMD = PendingCMD[i].CMD; | |
698 | data = PendingCMD[i].DataAddr; | |
699 | block = PendingCMD[i].Block; | |
700 | page = PendingCMD[i].Page; | |
701 | count = PendingCMD[i].PageCount; | |
702 | ||
703 | switch (CMD) { | |
704 | case ERASE_CMD: | |
705 | emu_Erase_Block(block); | |
706 | PendingCMD[i].Status = PASS; | |
707 | break; | |
708 | case WRITE_MAIN_CMD: | |
709 | emu_Write_Page_Main(data, block, page, count); | |
710 | PendingCMD[i].Status = PASS; | |
711 | break; | |
712 | case WRITE_MAIN_SPARE_CMD: | |
713 | emu_Write_Page_Main_Spare(data, block, page, count); | |
714 | PendingCMD[i].Status = PASS; | |
715 | break; | |
716 | case READ_MAIN_CMD: | |
717 | emu_Read_Page_Main(data, block, page, count); | |
718 | PendingCMD[i].Status = PASS; | |
719 | break; | |
720 | case MEMCOPY_CMD: | |
721 | memcpy(PendingCMD[i].DataDestAddr, | |
722 | PendingCMD[i].DataSrcAddr, | |
723 | PendingCMD[i].MemCopyByteCnt); | |
724 | case DUMMY_CMD: | |
725 | PendingCMD[i].Status = PASS; | |
726 | break; | |
727 | default: | |
728 | PendingCMD[i].Status = FAIL; | |
729 | break; | |
730 | } | |
731 | } | |
732 | ||
733 | /* | |
734 | * Temperory adding code to reset PendingCMD array for basic testing. | |
735 | * It should be done at the end of event status function. | |
736 | */ | |
737 | for (i = tag_count + MAX_CHANS; i < MAX_DESCS; i++) { | |
738 | PendingCMD[i].CMD = 0; | |
739 | PendingCMD[i].Tag = 0; | |
740 | PendingCMD[i].DataAddr = 0; | |
741 | PendingCMD[i].Block = 0; | |
742 | PendingCMD[i].Page = 0; | |
743 | PendingCMD[i].PageCount = 0; | |
744 | PendingCMD[i].DataDestAddr = 0; | |
745 | PendingCMD[i].DataSrcAddr = 0; | |
746 | PendingCMD[i].MemCopyByteCnt = 0; | |
747 | PendingCMD[i].ChanSync[0] = 0; | |
748 | PendingCMD[i].ChanSync[1] = 0; | |
749 | PendingCMD[i].ChanSync[2] = 0; | |
750 | PendingCMD[i].ChanSync[3] = 0; | |
751 | PendingCMD[i].ChanSync[4] = 0; | |
752 | PendingCMD[i].Status = CMD_NOT_DONE; | |
753 | } | |
754 | ||
755 | nand_dbg_print(NAND_DBG_TRACE, "At end of Execute CMDs.\n"); | |
756 | ||
757 | emu_isr(0, 0); /* This is a null isr now. Need fill it in future */ | |
758 | ||
759 | return status; | |
760 | } | |
761 | ||
762 | /*&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& | |
763 | * Function: emu_Event_Status | |
764 | * Inputs: none | |
765 | * Outputs: Event_Status code | |
766 | * Description: This function can also be used to force errors | |
767 | *&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&*/ | |
768 | u16 emu_CDMA_Event_Status(void) | |
769 | { | |
770 | nand_dbg_print(NAND_DBG_TRACE, "%s, Line %d, Function: %s\n", | |
771 | __FILE__, __LINE__, __func__); | |
772 | ||
773 | return EVENT_PASS; | |
774 | } | |
775 | ||
776 | #endif /* CMD_DMA */ | |
777 | #endif /* !ELDORA */ | |
778 | #endif /* FLASH_EMU */ |