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34f6e157 SH |
1 | /* |
2 | * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. | |
3 | * Copyright 2008 Sascha Hauer, kernel@pengutronix.de | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License | |
7 | * as published by the Free Software Foundation; either version 2 | |
8 | * of the License, or (at your option) any later version. | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, | |
17 | * MA 02110-1301, USA. | |
18 | */ | |
19 | ||
20 | #include <linux/delay.h> | |
21 | #include <linux/slab.h> | |
22 | #include <linux/init.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/mtd/mtd.h> | |
25 | #include <linux/mtd/nand.h> | |
26 | #include <linux/mtd/partitions.h> | |
27 | #include <linux/interrupt.h> | |
28 | #include <linux/device.h> | |
29 | #include <linux/platform_device.h> | |
30 | #include <linux/clk.h> | |
31 | #include <linux/err.h> | |
32 | #include <linux/io.h> | |
63f1474c SH |
33 | #include <linux/irq.h> |
34 | #include <linux/completion.h> | |
6436356b UKK |
35 | #include <linux/of_device.h> |
36 | #include <linux/of_mtd.h> | |
34f6e157 SH |
37 | |
38 | #include <asm/mach/flash.h> | |
39 | #include <mach/mxc_nand.h> | |
9467114e | 40 | #include <mach/hardware.h> |
34f6e157 SH |
41 | |
42 | #define DRIVER_NAME "mxc_nand" | |
43 | ||
9467114e | 44 | #define nfc_is_v21() (cpu_is_mx25() || cpu_is_mx35()) |
a47bfd2e | 45 | #define nfc_is_v1() (cpu_is_mx31() || cpu_is_mx27() || cpu_is_mx21()) |
c97926dd | 46 | #define nfc_is_v3_2() (cpu_is_mx51() || cpu_is_mx53()) |
71ec5155 | 47 | #define nfc_is_v3() nfc_is_v3_2() |
9467114e | 48 | |
34f6e157 | 49 | /* Addresses for NFC registers */ |
1bc99180 SH |
50 | #define NFC_V1_V2_BUF_SIZE (host->regs + 0x00) |
51 | #define NFC_V1_V2_BUF_ADDR (host->regs + 0x04) | |
52 | #define NFC_V1_V2_FLASH_ADDR (host->regs + 0x06) | |
53 | #define NFC_V1_V2_FLASH_CMD (host->regs + 0x08) | |
54 | #define NFC_V1_V2_CONFIG (host->regs + 0x0a) | |
55 | #define NFC_V1_V2_ECC_STATUS_RESULT (host->regs + 0x0c) | |
56 | #define NFC_V1_V2_RSLTMAIN_AREA (host->regs + 0x0e) | |
57 | #define NFC_V1_V2_RSLTSPARE_AREA (host->regs + 0x10) | |
58 | #define NFC_V1_V2_WRPROT (host->regs + 0x12) | |
59 | #define NFC_V1_UNLOCKSTART_BLKADDR (host->regs + 0x14) | |
60 | #define NFC_V1_UNLOCKEND_BLKADDR (host->regs + 0x16) | |
d178e3e8 BS |
61 | #define NFC_V21_UNLOCKSTART_BLKADDR0 (host->regs + 0x20) |
62 | #define NFC_V21_UNLOCKSTART_BLKADDR1 (host->regs + 0x24) | |
63 | #define NFC_V21_UNLOCKSTART_BLKADDR2 (host->regs + 0x28) | |
64 | #define NFC_V21_UNLOCKSTART_BLKADDR3 (host->regs + 0x2c) | |
65 | #define NFC_V21_UNLOCKEND_BLKADDR0 (host->regs + 0x22) | |
66 | #define NFC_V21_UNLOCKEND_BLKADDR1 (host->regs + 0x26) | |
67 | #define NFC_V21_UNLOCKEND_BLKADDR2 (host->regs + 0x2a) | |
68 | #define NFC_V21_UNLOCKEND_BLKADDR3 (host->regs + 0x2e) | |
1bc99180 SH |
69 | #define NFC_V1_V2_NF_WRPRST (host->regs + 0x18) |
70 | #define NFC_V1_V2_CONFIG1 (host->regs + 0x1a) | |
71 | #define NFC_V1_V2_CONFIG2 (host->regs + 0x1c) | |
72 | ||
6e85dfdc | 73 | #define NFC_V2_CONFIG1_ECC_MODE_4 (1 << 0) |
1bc99180 SH |
74 | #define NFC_V1_V2_CONFIG1_SP_EN (1 << 2) |
75 | #define NFC_V1_V2_CONFIG1_ECC_EN (1 << 3) | |
76 | #define NFC_V1_V2_CONFIG1_INT_MSK (1 << 4) | |
77 | #define NFC_V1_V2_CONFIG1_BIG (1 << 5) | |
78 | #define NFC_V1_V2_CONFIG1_RST (1 << 6) | |
79 | #define NFC_V1_V2_CONFIG1_CE (1 << 7) | |
b8db2f51 SH |
80 | #define NFC_V2_CONFIG1_ONE_CYCLE (1 << 8) |
81 | #define NFC_V2_CONFIG1_PPB(x) (((x) & 0x3) << 9) | |
82 | #define NFC_V2_CONFIG1_FP_INT (1 << 11) | |
1bc99180 SH |
83 | |
84 | #define NFC_V1_V2_CONFIG2_INT (1 << 15) | |
85 | ||
86 | /* | |
87 | * Operation modes for the NFC. Valid for v1, v2 and v3 | |
88 | * type controllers. | |
89 | */ | |
90 | #define NFC_CMD (1 << 0) | |
91 | #define NFC_ADDR (1 << 1) | |
92 | #define NFC_INPUT (1 << 2) | |
93 | #define NFC_OUTPUT (1 << 3) | |
94 | #define NFC_ID (1 << 4) | |
95 | #define NFC_STATUS (1 << 5) | |
34f6e157 | 96 | |
71ec5155 SH |
97 | #define NFC_V3_FLASH_CMD (host->regs_axi + 0x00) |
98 | #define NFC_V3_FLASH_ADDR0 (host->regs_axi + 0x04) | |
99 | ||
100 | #define NFC_V3_CONFIG1 (host->regs_axi + 0x34) | |
101 | #define NFC_V3_CONFIG1_SP_EN (1 << 0) | |
102 | #define NFC_V3_CONFIG1_RBA(x) (((x) & 0x7 ) << 4) | |
103 | ||
104 | #define NFC_V3_ECC_STATUS_RESULT (host->regs_axi + 0x38) | |
105 | ||
106 | #define NFC_V3_LAUNCH (host->regs_axi + 0x40) | |
107 | ||
108 | #define NFC_V3_WRPROT (host->regs_ip + 0x0) | |
109 | #define NFC_V3_WRPROT_LOCK_TIGHT (1 << 0) | |
110 | #define NFC_V3_WRPROT_LOCK (1 << 1) | |
111 | #define NFC_V3_WRPROT_UNLOCK (1 << 2) | |
112 | #define NFC_V3_WRPROT_BLS_UNLOCK (2 << 6) | |
113 | ||
114 | #define NFC_V3_WRPROT_UNLOCK_BLK_ADD0 (host->regs_ip + 0x04) | |
115 | ||
116 | #define NFC_V3_CONFIG2 (host->regs_ip + 0x24) | |
117 | #define NFC_V3_CONFIG2_PS_512 (0 << 0) | |
118 | #define NFC_V3_CONFIG2_PS_2048 (1 << 0) | |
119 | #define NFC_V3_CONFIG2_PS_4096 (2 << 0) | |
120 | #define NFC_V3_CONFIG2_ONE_CYCLE (1 << 2) | |
121 | #define NFC_V3_CONFIG2_ECC_EN (1 << 3) | |
122 | #define NFC_V3_CONFIG2_2CMD_PHASES (1 << 4) | |
123 | #define NFC_V3_CONFIG2_NUM_ADDR_PHASE0 (1 << 5) | |
124 | #define NFC_V3_CONFIG2_ECC_MODE_8 (1 << 6) | |
125 | #define NFC_V3_CONFIG2_PPB(x) (((x) & 0x3) << 7) | |
126 | #define NFC_V3_CONFIG2_NUM_ADDR_PHASE1(x) (((x) & 0x3) << 12) | |
127 | #define NFC_V3_CONFIG2_INT_MSK (1 << 15) | |
128 | #define NFC_V3_CONFIG2_ST_CMD(x) (((x) & 0xff) << 24) | |
129 | #define NFC_V3_CONFIG2_SPAS(x) (((x) & 0xff) << 16) | |
130 | ||
131 | #define NFC_V3_CONFIG3 (host->regs_ip + 0x28) | |
132 | #define NFC_V3_CONFIG3_ADD_OP(x) (((x) & 0x3) << 0) | |
133 | #define NFC_V3_CONFIG3_FW8 (1 << 3) | |
134 | #define NFC_V3_CONFIG3_SBB(x) (((x) & 0x7) << 8) | |
135 | #define NFC_V3_CONFIG3_NUM_OF_DEVICES(x) (((x) & 0x7) << 12) | |
136 | #define NFC_V3_CONFIG3_RBB_MODE (1 << 15) | |
137 | #define NFC_V3_CONFIG3_NO_SDMA (1 << 20) | |
138 | ||
139 | #define NFC_V3_IPC (host->regs_ip + 0x2C) | |
140 | #define NFC_V3_IPC_CREQ (1 << 0) | |
141 | #define NFC_V3_IPC_INT (1 << 31) | |
142 | ||
143 | #define NFC_V3_DELAY_LINE (host->regs_ip + 0x34) | |
34f6e157 | 144 | |
e4303b25 UKK |
145 | struct mxc_nand_host; |
146 | ||
147 | struct mxc_nand_devtype_data { | |
148 | void (*preset)(struct mtd_info *); | |
149 | void (*send_cmd)(struct mxc_nand_host *, uint16_t, int); | |
150 | void (*send_addr)(struct mxc_nand_host *, uint16_t, int); | |
151 | void (*send_page)(struct mtd_info *, unsigned int); | |
152 | void (*send_read_id)(struct mxc_nand_host *); | |
153 | uint16_t (*get_dev_status)(struct mxc_nand_host *); | |
154 | int (*check_int)(struct mxc_nand_host *); | |
155 | void (*irq_control)(struct mxc_nand_host *, int); | |
6d38af25 | 156 | u32 (*get_ecc_status)(struct mxc_nand_host *); |
6dcdf99d | 157 | struct nand_ecclayout *ecclayout_512, *ecclayout_2k, *ecclayout_4k; |
5e05a2d6 | 158 | void (*select_chip)(struct mtd_info *mtd, int chip); |
69d023be UKK |
159 | int (*correct_data)(struct mtd_info *mtd, u_char *dat, |
160 | u_char *read_ecc, u_char *calc_ecc); | |
f48d0f9a UKK |
161 | |
162 | /* | |
163 | * On i.MX21 the CONFIG2:INT bit cannot be read if interrupts are masked | |
164 | * (CONFIG1:INT_MSK is set). To handle this the driver uses | |
165 | * enable_irq/disable_irq_nosync instead of CONFIG1:INT_MSK | |
166 | */ | |
167 | int irqpending_quirk; | |
168 | int needs_ip; | |
169 | ||
170 | size_t regs_offset; | |
171 | size_t spare0_offset; | |
172 | size_t axi_offset; | |
173 | ||
174 | int spare_len; | |
175 | int eccbytes; | |
176 | int eccsize; | |
e4303b25 UKK |
177 | }; |
178 | ||
34f6e157 SH |
179 | struct mxc_nand_host { |
180 | struct mtd_info mtd; | |
181 | struct nand_chip nand; | |
34f6e157 SH |
182 | struct device *dev; |
183 | ||
4b6f05e1 UKK |
184 | void __iomem *spare0; |
185 | void __iomem *main_area0; | |
c6de7e1b SH |
186 | |
187 | void __iomem *base; | |
34f6e157 | 188 | void __iomem *regs; |
71ec5155 SH |
189 | void __iomem *regs_axi; |
190 | void __iomem *regs_ip; | |
34f6e157 | 191 | int status_request; |
34f6e157 SH |
192 | struct clk *clk; |
193 | int clk_act; | |
194 | int irq; | |
94f77e50 | 195 | int eccsize; |
d178e3e8 | 196 | int active_cs; |
34f6e157 | 197 | |
63f1474c | 198 | struct completion op_completion; |
34f6e157 | 199 | |
f8f9608d SH |
200 | uint8_t *data_buf; |
201 | unsigned int buf_start; | |
5f97304e | 202 | |
e4303b25 | 203 | const struct mxc_nand_devtype_data *devtype_data; |
6436356b | 204 | struct mxc_nand_platform_data pdata; |
34f6e157 SH |
205 | }; |
206 | ||
34f6e157 | 207 | /* OOB placement block for use with hardware ecc generation */ |
9467114e | 208 | static struct nand_ecclayout nandv1_hw_eccoob_smallpage = { |
34f6e157 SH |
209 | .eccbytes = 5, |
210 | .eccpos = {6, 7, 8, 9, 10}, | |
8c1fd89a | 211 | .oobfree = {{0, 5}, {12, 4}, } |
bd3fd62e VB |
212 | }; |
213 | ||
9467114e | 214 | static struct nand_ecclayout nandv1_hw_eccoob_largepage = { |
bd3fd62e VB |
215 | .eccbytes = 20, |
216 | .eccpos = {6, 7, 8, 9, 10, 22, 23, 24, 25, 26, | |
217 | 38, 39, 40, 41, 42, 54, 55, 56, 57, 58}, | |
218 | .oobfree = {{2, 4}, {11, 10}, {27, 10}, {43, 10}, {59, 5}, } | |
34f6e157 SH |
219 | }; |
220 | ||
9467114e SH |
221 | /* OOB description for 512 byte pages with 16 byte OOB */ |
222 | static struct nand_ecclayout nandv2_hw_eccoob_smallpage = { | |
223 | .eccbytes = 1 * 9, | |
224 | .eccpos = { | |
225 | 7, 8, 9, 10, 11, 12, 13, 14, 15 | |
226 | }, | |
227 | .oobfree = { | |
228 | {.offset = 0, .length = 5} | |
229 | } | |
230 | }; | |
231 | ||
232 | /* OOB description for 2048 byte pages with 64 byte OOB */ | |
233 | static struct nand_ecclayout nandv2_hw_eccoob_largepage = { | |
234 | .eccbytes = 4 * 9, | |
235 | .eccpos = { | |
236 | 7, 8, 9, 10, 11, 12, 13, 14, 15, | |
237 | 23, 24, 25, 26, 27, 28, 29, 30, 31, | |
238 | 39, 40, 41, 42, 43, 44, 45, 46, 47, | |
239 | 55, 56, 57, 58, 59, 60, 61, 62, 63 | |
240 | }, | |
241 | .oobfree = { | |
242 | {.offset = 2, .length = 4}, | |
243 | {.offset = 16, .length = 7}, | |
244 | {.offset = 32, .length = 7}, | |
245 | {.offset = 48, .length = 7} | |
246 | } | |
247 | }; | |
248 | ||
2c1c5f19 BS |
249 | /* OOB description for 4096 byte pages with 128 byte OOB */ |
250 | static struct nand_ecclayout nandv2_hw_eccoob_4k = { | |
251 | .eccbytes = 8 * 9, | |
252 | .eccpos = { | |
253 | 7, 8, 9, 10, 11, 12, 13, 14, 15, | |
254 | 23, 24, 25, 26, 27, 28, 29, 30, 31, | |
255 | 39, 40, 41, 42, 43, 44, 45, 46, 47, | |
256 | 55, 56, 57, 58, 59, 60, 61, 62, 63, | |
257 | 71, 72, 73, 74, 75, 76, 77, 78, 79, | |
258 | 87, 88, 89, 90, 91, 92, 93, 94, 95, | |
259 | 103, 104, 105, 106, 107, 108, 109, 110, 111, | |
260 | 119, 120, 121, 122, 123, 124, 125, 126, 127, | |
261 | }, | |
262 | .oobfree = { | |
263 | {.offset = 2, .length = 4}, | |
264 | {.offset = 16, .length = 7}, | |
265 | {.offset = 32, .length = 7}, | |
266 | {.offset = 48, .length = 7}, | |
267 | {.offset = 64, .length = 7}, | |
268 | {.offset = 80, .length = 7}, | |
269 | {.offset = 96, .length = 7}, | |
270 | {.offset = 112, .length = 7}, | |
271 | } | |
272 | }; | |
273 | ||
6436356b | 274 | static const char *part_probes[] = { "RedBoot", "cmdlinepart", "ofpart", NULL }; |
34f6e157 | 275 | |
096bcc23 SH |
276 | static void memcpy32_fromio(void *trg, const void __iomem *src, size_t size) |
277 | { | |
278 | int i; | |
279 | u32 *t = trg; | |
280 | const __iomem u32 *s = src; | |
281 | ||
282 | for (i = 0; i < (size >> 2); i++) | |
283 | *t++ = __raw_readl(s++); | |
284 | } | |
285 | ||
286 | static void memcpy32_toio(void __iomem *trg, const void *src, int size) | |
287 | { | |
288 | int i; | |
289 | u32 __iomem *t = trg; | |
290 | const u32 *s = src; | |
291 | ||
292 | for (i = 0; i < (size >> 2); i++) | |
293 | __raw_writel(*s++, t++); | |
294 | } | |
295 | ||
71ec5155 SH |
296 | static int check_int_v3(struct mxc_nand_host *host) |
297 | { | |
298 | uint32_t tmp; | |
299 | ||
300 | tmp = readl(NFC_V3_IPC); | |
301 | if (!(tmp & NFC_V3_IPC_INT)) | |
302 | return 0; | |
303 | ||
304 | tmp &= ~NFC_V3_IPC_INT; | |
305 | writel(tmp, NFC_V3_IPC); | |
306 | ||
307 | return 1; | |
308 | } | |
309 | ||
7aaf28ac SH |
310 | static int check_int_v1_v2(struct mxc_nand_host *host) |
311 | { | |
312 | uint32_t tmp; | |
313 | ||
1bc99180 SH |
314 | tmp = readw(NFC_V1_V2_CONFIG2); |
315 | if (!(tmp & NFC_V1_V2_CONFIG2_INT)) | |
7aaf28ac SH |
316 | return 0; |
317 | ||
f48d0f9a | 318 | if (!host->devtype_data->irqpending_quirk) |
63f1474c | 319 | writew(tmp & ~NFC_V1_V2_CONFIG2_INT, NFC_V1_V2_CONFIG2); |
7aaf28ac SH |
320 | |
321 | return 1; | |
322 | } | |
323 | ||
63f1474c SH |
324 | static void irq_control_v1_v2(struct mxc_nand_host *host, int activate) |
325 | { | |
326 | uint16_t tmp; | |
327 | ||
328 | tmp = readw(NFC_V1_V2_CONFIG1); | |
329 | ||
330 | if (activate) | |
331 | tmp &= ~NFC_V1_V2_CONFIG1_INT_MSK; | |
332 | else | |
333 | tmp |= NFC_V1_V2_CONFIG1_INT_MSK; | |
334 | ||
335 | writew(tmp, NFC_V1_V2_CONFIG1); | |
336 | } | |
337 | ||
338 | static void irq_control_v3(struct mxc_nand_host *host, int activate) | |
339 | { | |
340 | uint32_t tmp; | |
341 | ||
342 | tmp = readl(NFC_V3_CONFIG2); | |
343 | ||
344 | if (activate) | |
345 | tmp &= ~NFC_V3_CONFIG2_INT_MSK; | |
346 | else | |
347 | tmp |= NFC_V3_CONFIG2_INT_MSK; | |
348 | ||
349 | writel(tmp, NFC_V3_CONFIG2); | |
350 | } | |
351 | ||
8556958a UKK |
352 | static void irq_control(struct mxc_nand_host *host, int activate) |
353 | { | |
f48d0f9a | 354 | if (host->devtype_data->irqpending_quirk) { |
8556958a UKK |
355 | if (activate) |
356 | enable_irq(host->irq); | |
357 | else | |
358 | disable_irq_nosync(host->irq); | |
359 | } else { | |
e4303b25 | 360 | host->devtype_data->irq_control(host, activate); |
8556958a UKK |
361 | } |
362 | } | |
363 | ||
6d38af25 UKK |
364 | static u32 get_ecc_status_v1(struct mxc_nand_host *host) |
365 | { | |
366 | return readw(NFC_V1_V2_ECC_STATUS_RESULT); | |
367 | } | |
368 | ||
369 | static u32 get_ecc_status_v2(struct mxc_nand_host *host) | |
370 | { | |
371 | return readl(NFC_V1_V2_ECC_STATUS_RESULT); | |
372 | } | |
373 | ||
374 | static u32 get_ecc_status_v3(struct mxc_nand_host *host) | |
375 | { | |
376 | return readl(NFC_V3_ECC_STATUS_RESULT); | |
377 | } | |
378 | ||
8556958a UKK |
379 | static irqreturn_t mxc_nfc_irq(int irq, void *dev_id) |
380 | { | |
381 | struct mxc_nand_host *host = dev_id; | |
382 | ||
e4303b25 | 383 | if (!host->devtype_data->check_int(host)) |
8556958a UKK |
384 | return IRQ_NONE; |
385 | ||
386 | irq_control(host, 0); | |
387 | ||
388 | complete(&host->op_completion); | |
389 | ||
390 | return IRQ_HANDLED; | |
391 | } | |
392 | ||
34f6e157 SH |
393 | /* This function polls the NANDFC to wait for the basic operation to |
394 | * complete by checking the INT bit of config2 register. | |
395 | */ | |
c110eaf4 | 396 | static void wait_op_done(struct mxc_nand_host *host, int useirq) |
34f6e157 | 397 | { |
a47bfd2e | 398 | int max_retries = 8000; |
34f6e157 SH |
399 | |
400 | if (useirq) { | |
e4303b25 | 401 | if (!host->devtype_data->check_int(host)) { |
63f1474c | 402 | INIT_COMPLETION(host->op_completion); |
8556958a | 403 | irq_control(host, 1); |
63f1474c | 404 | wait_for_completion(&host->op_completion); |
34f6e157 SH |
405 | } |
406 | } else { | |
407 | while (max_retries-- > 0) { | |
e4303b25 | 408 | if (host->devtype_data->check_int(host)) |
34f6e157 | 409 | break; |
7aaf28ac | 410 | |
34f6e157 SH |
411 | udelay(1); |
412 | } | |
43950a60 | 413 | if (max_retries < 0) |
0a32a102 | 414 | pr_debug("%s: INT not set\n", __func__); |
34f6e157 SH |
415 | } |
416 | } | |
417 | ||
71ec5155 SH |
418 | static void send_cmd_v3(struct mxc_nand_host *host, uint16_t cmd, int useirq) |
419 | { | |
420 | /* fill command */ | |
421 | writel(cmd, NFC_V3_FLASH_CMD); | |
422 | ||
423 | /* send out command */ | |
424 | writel(NFC_CMD, NFC_V3_LAUNCH); | |
425 | ||
426 | /* Wait for operation to complete */ | |
427 | wait_op_done(host, useirq); | |
428 | } | |
429 | ||
34f6e157 SH |
430 | /* This function issues the specified command to the NAND device and |
431 | * waits for completion. */ | |
5f97304e | 432 | static void send_cmd_v1_v2(struct mxc_nand_host *host, uint16_t cmd, int useirq) |
34f6e157 | 433 | { |
289c0522 | 434 | pr_debug("send_cmd(host, 0x%x, %d)\n", cmd, useirq); |
34f6e157 | 435 | |
1bc99180 SH |
436 | writew(cmd, NFC_V1_V2_FLASH_CMD); |
437 | writew(NFC_CMD, NFC_V1_V2_CONFIG2); | |
34f6e157 | 438 | |
f48d0f9a | 439 | if (host->devtype_data->irqpending_quirk && (cmd == NAND_CMD_RESET)) { |
a47bfd2e IC |
440 | int max_retries = 100; |
441 | /* Reset completion is indicated by NFC_CONFIG2 */ | |
442 | /* being set to 0 */ | |
443 | while (max_retries-- > 0) { | |
1bc99180 | 444 | if (readw(NFC_V1_V2_CONFIG2) == 0) { |
a47bfd2e IC |
445 | break; |
446 | } | |
447 | udelay(1); | |
448 | } | |
449 | if (max_retries < 0) | |
0a32a102 | 450 | pr_debug("%s: RESET failed\n", __func__); |
a47bfd2e IC |
451 | } else { |
452 | /* Wait for operation to complete */ | |
453 | wait_op_done(host, useirq); | |
454 | } | |
34f6e157 SH |
455 | } |
456 | ||
71ec5155 SH |
457 | static void send_addr_v3(struct mxc_nand_host *host, uint16_t addr, int islast) |
458 | { | |
459 | /* fill address */ | |
460 | writel(addr, NFC_V3_FLASH_ADDR0); | |
461 | ||
462 | /* send out address */ | |
463 | writel(NFC_ADDR, NFC_V3_LAUNCH); | |
464 | ||
465 | wait_op_done(host, 0); | |
466 | } | |
467 | ||
34f6e157 SH |
468 | /* This function sends an address (or partial address) to the |
469 | * NAND device. The address is used to select the source/destination for | |
470 | * a NAND command. */ | |
5f97304e | 471 | static void send_addr_v1_v2(struct mxc_nand_host *host, uint16_t addr, int islast) |
34f6e157 | 472 | { |
289c0522 | 473 | pr_debug("send_addr(host, 0x%x %d)\n", addr, islast); |
34f6e157 | 474 | |
1bc99180 SH |
475 | writew(addr, NFC_V1_V2_FLASH_ADDR); |
476 | writew(NFC_ADDR, NFC_V1_V2_CONFIG2); | |
34f6e157 SH |
477 | |
478 | /* Wait for operation to complete */ | |
c110eaf4 | 479 | wait_op_done(host, islast); |
34f6e157 SH |
480 | } |
481 | ||
71ec5155 SH |
482 | static void send_page_v3(struct mtd_info *mtd, unsigned int ops) |
483 | { | |
484 | struct nand_chip *nand_chip = mtd->priv; | |
485 | struct mxc_nand_host *host = nand_chip->priv; | |
486 | uint32_t tmp; | |
487 | ||
488 | tmp = readl(NFC_V3_CONFIG1); | |
489 | tmp &= ~(7 << 4); | |
490 | writel(tmp, NFC_V3_CONFIG1); | |
491 | ||
492 | /* transfer data from NFC ram to nand */ | |
493 | writel(ops, NFC_V3_LAUNCH); | |
494 | ||
495 | wait_op_done(host, false); | |
496 | } | |
497 | ||
6d38af25 UKK |
498 | static void send_page_v2(struct mtd_info *mtd, unsigned int ops) |
499 | { | |
500 | struct nand_chip *nand_chip = mtd->priv; | |
501 | struct mxc_nand_host *host = nand_chip->priv; | |
502 | ||
503 | /* NANDFC buffer 0 is used for page read/write */ | |
504 | writew(host->active_cs << 4, NFC_V1_V2_BUF_ADDR); | |
505 | ||
506 | writew(ops, NFC_V1_V2_CONFIG2); | |
507 | ||
508 | /* Wait for operation to complete */ | |
509 | wait_op_done(host, true); | |
510 | } | |
511 | ||
512 | static void send_page_v1(struct mtd_info *mtd, unsigned int ops) | |
34f6e157 | 513 | { |
2d69c7fa SH |
514 | struct nand_chip *nand_chip = mtd->priv; |
515 | struct mxc_nand_host *host = nand_chip->priv; | |
c5d23f1b | 516 | int bufs, i; |
34f6e157 | 517 | |
6d38af25 | 518 | if (mtd->writesize > 512) |
c5d23f1b SH |
519 | bufs = 4; |
520 | else | |
521 | bufs = 1; | |
34f6e157 | 522 | |
c5d23f1b | 523 | for (i = 0; i < bufs; i++) { |
34f6e157 | 524 | |
c5d23f1b | 525 | /* NANDFC buffer 0 is used for page read/write */ |
d178e3e8 | 526 | writew((host->active_cs << 4) | i, NFC_V1_V2_BUF_ADDR); |
34f6e157 | 527 | |
1bc99180 | 528 | writew(ops, NFC_V1_V2_CONFIG2); |
34f6e157 | 529 | |
c5d23f1b | 530 | /* Wait for operation to complete */ |
c110eaf4 | 531 | wait_op_done(host, true); |
34f6e157 | 532 | } |
34f6e157 SH |
533 | } |
534 | ||
71ec5155 SH |
535 | static void send_read_id_v3(struct mxc_nand_host *host) |
536 | { | |
537 | /* Read ID into main buffer */ | |
538 | writel(NFC_ID, NFC_V3_LAUNCH); | |
539 | ||
540 | wait_op_done(host, true); | |
541 | ||
096bcc23 | 542 | memcpy32_fromio(host->data_buf, host->main_area0, 16); |
71ec5155 SH |
543 | } |
544 | ||
34f6e157 | 545 | /* Request the NANDFC to perform a read of the NAND device ID. */ |
5f97304e | 546 | static void send_read_id_v1_v2(struct mxc_nand_host *host) |
34f6e157 SH |
547 | { |
548 | struct nand_chip *this = &host->nand; | |
34f6e157 SH |
549 | |
550 | /* NANDFC buffer 0 is used for device ID output */ | |
d178e3e8 | 551 | writew(host->active_cs << 4, NFC_V1_V2_BUF_ADDR); |
34f6e157 | 552 | |
1bc99180 | 553 | writew(NFC_ID, NFC_V1_V2_CONFIG2); |
34f6e157 SH |
554 | |
555 | /* Wait for operation to complete */ | |
c110eaf4 | 556 | wait_op_done(host, true); |
34f6e157 | 557 | |
096bcc23 | 558 | memcpy32_fromio(host->data_buf, host->main_area0, 16); |
f7b66e5e | 559 | |
34f6e157 | 560 | if (this->options & NAND_BUSWIDTH_16) { |
34f6e157 | 561 | /* compress the ID info */ |
f7b66e5e JO |
562 | host->data_buf[1] = host->data_buf[2]; |
563 | host->data_buf[2] = host->data_buf[4]; | |
564 | host->data_buf[3] = host->data_buf[6]; | |
565 | host->data_buf[4] = host->data_buf[8]; | |
566 | host->data_buf[5] = host->data_buf[10]; | |
34f6e157 SH |
567 | } |
568 | } | |
569 | ||
71ec5155 SH |
570 | static uint16_t get_dev_status_v3(struct mxc_nand_host *host) |
571 | { | |
572 | writew(NFC_STATUS, NFC_V3_LAUNCH); | |
573 | wait_op_done(host, true); | |
574 | ||
575 | return readl(NFC_V3_CONFIG1) >> 16; | |
576 | } | |
577 | ||
34f6e157 SH |
578 | /* This function requests the NANDFC to perform a read of the |
579 | * NAND device status and returns the current status. */ | |
5f97304e | 580 | static uint16_t get_dev_status_v1_v2(struct mxc_nand_host *host) |
34f6e157 | 581 | { |
c29c607a | 582 | void __iomem *main_buf = host->main_area0; |
34f6e157 | 583 | uint32_t store; |
f06368f7 | 584 | uint16_t ret; |
34f6e157 | 585 | |
d178e3e8 | 586 | writew(host->active_cs << 4, NFC_V1_V2_BUF_ADDR); |
34f6e157 | 587 | |
c29c607a SH |
588 | /* |
589 | * The device status is stored in main_area0. To | |
590 | * prevent corruption of the buffer save the value | |
591 | * and restore it afterwards. | |
592 | */ | |
34f6e157 | 593 | store = readl(main_buf); |
34f6e157 | 594 | |
1bc99180 | 595 | writew(NFC_STATUS, NFC_V1_V2_CONFIG2); |
c110eaf4 | 596 | wait_op_done(host, true); |
34f6e157 | 597 | |
34f6e157 | 598 | ret = readw(main_buf); |
c29c607a | 599 | |
34f6e157 SH |
600 | writel(store, main_buf); |
601 | ||
602 | return ret; | |
603 | } | |
604 | ||
605 | /* This functions is used by upper layer to checks if device is ready */ | |
606 | static int mxc_nand_dev_ready(struct mtd_info *mtd) | |
607 | { | |
608 | /* | |
609 | * NFC handles R/B internally. Therefore, this function | |
610 | * always returns status as ready. | |
611 | */ | |
612 | return 1; | |
613 | } | |
614 | ||
615 | static void mxc_nand_enable_hwecc(struct mtd_info *mtd, int mode) | |
616 | { | |
617 | /* | |
618 | * If HW ECC is enabled, we turn it on during init. There is | |
619 | * no need to enable again here. | |
620 | */ | |
621 | } | |
622 | ||
94f77e50 | 623 | static int mxc_nand_correct_data_v1(struct mtd_info *mtd, u_char *dat, |
34f6e157 SH |
624 | u_char *read_ecc, u_char *calc_ecc) |
625 | { | |
626 | struct nand_chip *nand_chip = mtd->priv; | |
627 | struct mxc_nand_host *host = nand_chip->priv; | |
628 | ||
629 | /* | |
630 | * 1-Bit errors are automatically corrected in HW. No need for | |
631 | * additional correction. 2-Bit errors cannot be corrected by | |
632 | * HW ECC, so we need to return failure | |
633 | */ | |
6d38af25 | 634 | uint16_t ecc_status = get_ecc_status_v1(host); |
34f6e157 SH |
635 | |
636 | if (((ecc_status & 0x3) == 2) || ((ecc_status >> 2) == 2)) { | |
289c0522 | 637 | pr_debug("MXC_NAND: HWECC uncorrectable 2-bit ECC error\n"); |
34f6e157 SH |
638 | return -1; |
639 | } | |
640 | ||
641 | return 0; | |
642 | } | |
643 | ||
94f77e50 SH |
644 | static int mxc_nand_correct_data_v2_v3(struct mtd_info *mtd, u_char *dat, |
645 | u_char *read_ecc, u_char *calc_ecc) | |
646 | { | |
647 | struct nand_chip *nand_chip = mtd->priv; | |
648 | struct mxc_nand_host *host = nand_chip->priv; | |
649 | u32 ecc_stat, err; | |
650 | int no_subpages = 1; | |
651 | int ret = 0; | |
652 | u8 ecc_bit_mask, err_limit; | |
653 | ||
654 | ecc_bit_mask = (host->eccsize == 4) ? 0x7 : 0xf; | |
655 | err_limit = (host->eccsize == 4) ? 0x4 : 0x8; | |
656 | ||
657 | no_subpages = mtd->writesize >> 9; | |
658 | ||
6d38af25 | 659 | ecc_stat = host->devtype_data->get_ecc_status(host); |
94f77e50 SH |
660 | |
661 | do { | |
662 | err = ecc_stat & ecc_bit_mask; | |
663 | if (err > err_limit) { | |
664 | printk(KERN_WARNING "UnCorrectable RS-ECC Error\n"); | |
665 | return -1; | |
666 | } else { | |
667 | ret += err; | |
668 | } | |
669 | ecc_stat >>= 4; | |
670 | } while (--no_subpages); | |
671 | ||
672 | mtd->ecc_stats.corrected += ret; | |
673 | pr_debug("%d Symbol Correctable RS-ECC Error\n", ret); | |
674 | ||
675 | return ret; | |
676 | } | |
677 | ||
34f6e157 SH |
678 | static int mxc_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, |
679 | u_char *ecc_code) | |
680 | { | |
681 | return 0; | |
682 | } | |
683 | ||
684 | static u_char mxc_nand_read_byte(struct mtd_info *mtd) | |
685 | { | |
686 | struct nand_chip *nand_chip = mtd->priv; | |
687 | struct mxc_nand_host *host = nand_chip->priv; | |
f8f9608d | 688 | uint8_t ret; |
34f6e157 SH |
689 | |
690 | /* Check for status request */ | |
691 | if (host->status_request) | |
e4303b25 | 692 | return host->devtype_data->get_dev_status(host) & 0xFF; |
34f6e157 | 693 | |
f8f9608d SH |
694 | ret = *(uint8_t *)(host->data_buf + host->buf_start); |
695 | host->buf_start++; | |
34f6e157 SH |
696 | |
697 | return ret; | |
698 | } | |
699 | ||
700 | static uint16_t mxc_nand_read_word(struct mtd_info *mtd) | |
701 | { | |
702 | struct nand_chip *nand_chip = mtd->priv; | |
703 | struct mxc_nand_host *host = nand_chip->priv; | |
f8f9608d | 704 | uint16_t ret; |
34f6e157 | 705 | |
f8f9608d SH |
706 | ret = *(uint16_t *)(host->data_buf + host->buf_start); |
707 | host->buf_start += 2; | |
34f6e157 SH |
708 | |
709 | return ret; | |
710 | } | |
711 | ||
712 | /* Write data of length len to buffer buf. The data to be | |
713 | * written on NAND Flash is first copied to RAMbuffer. After the Data Input | |
714 | * Operation by the NFC, the data is written to NAND Flash */ | |
715 | static void mxc_nand_write_buf(struct mtd_info *mtd, | |
716 | const u_char *buf, int len) | |
717 | { | |
718 | struct nand_chip *nand_chip = mtd->priv; | |
719 | struct mxc_nand_host *host = nand_chip->priv; | |
f8f9608d SH |
720 | u16 col = host->buf_start; |
721 | int n = mtd->oobsize + mtd->writesize - col; | |
34f6e157 | 722 | |
f8f9608d | 723 | n = min(n, len); |
34f6e157 | 724 | |
f8f9608d | 725 | memcpy(host->data_buf + col, buf, n); |
34f6e157 | 726 | |
f8f9608d | 727 | host->buf_start += n; |
34f6e157 SH |
728 | } |
729 | ||
730 | /* Read the data buffer from the NAND Flash. To read the data from NAND | |
731 | * Flash first the data output cycle is initiated by the NFC, which copies | |
732 | * the data to RAMbuffer. This data of length len is then copied to buffer buf. | |
733 | */ | |
734 | static void mxc_nand_read_buf(struct mtd_info *mtd, u_char *buf, int len) | |
735 | { | |
736 | struct nand_chip *nand_chip = mtd->priv; | |
737 | struct mxc_nand_host *host = nand_chip->priv; | |
f8f9608d SH |
738 | u16 col = host->buf_start; |
739 | int n = mtd->oobsize + mtd->writesize - col; | |
34f6e157 | 740 | |
f8f9608d | 741 | n = min(n, len); |
34f6e157 | 742 | |
5d9d9936 | 743 | memcpy(buf, host->data_buf + col, n); |
34f6e157 | 744 | |
5d9d9936 | 745 | host->buf_start += n; |
34f6e157 SH |
746 | } |
747 | ||
748 | /* Used by the upper layer to verify the data in NAND Flash | |
749 | * with the data in the buf. */ | |
750 | static int mxc_nand_verify_buf(struct mtd_info *mtd, | |
751 | const u_char *buf, int len) | |
752 | { | |
753 | return -EFAULT; | |
754 | } | |
755 | ||
756 | /* This function is used by upper layer for select and | |
757 | * deselect of the NAND chip */ | |
5e05a2d6 | 758 | static void mxc_nand_select_chip_v1_v3(struct mtd_info *mtd, int chip) |
34f6e157 SH |
759 | { |
760 | struct nand_chip *nand_chip = mtd->priv; | |
761 | struct mxc_nand_host *host = nand_chip->priv; | |
762 | ||
d178e3e8 | 763 | if (chip == -1) { |
34f6e157 SH |
764 | /* Disable the NFC clock */ |
765 | if (host->clk_act) { | |
97c3213f | 766 | clk_disable_unprepare(host->clk); |
34f6e157 SH |
767 | host->clk_act = 0; |
768 | } | |
d178e3e8 BS |
769 | return; |
770 | } | |
771 | ||
772 | if (!host->clk_act) { | |
34f6e157 | 773 | /* Enable the NFC clock */ |
97c3213f | 774 | clk_prepare_enable(host->clk); |
d178e3e8 BS |
775 | host->clk_act = 1; |
776 | } | |
5e05a2d6 | 777 | } |
34f6e157 | 778 | |
5e05a2d6 UKK |
779 | static void mxc_nand_select_chip_v2(struct mtd_info *mtd, int chip) |
780 | { | |
781 | struct nand_chip *nand_chip = mtd->priv; | |
782 | struct mxc_nand_host *host = nand_chip->priv; | |
783 | ||
784 | if (chip == -1) { | |
785 | /* Disable the NFC clock */ | |
786 | if (host->clk_act) { | |
3d059693 | 787 | clk_disable_unprepare(host->clk); |
5e05a2d6 UKK |
788 | host->clk_act = 0; |
789 | } | |
790 | return; | |
791 | } | |
34f6e157 | 792 | |
5e05a2d6 UKK |
793 | if (!host->clk_act) { |
794 | /* Enable the NFC clock */ | |
3d059693 | 795 | clk_prepare_enable(host->clk); |
5e05a2d6 | 796 | host->clk_act = 1; |
34f6e157 | 797 | } |
5e05a2d6 UKK |
798 | |
799 | host->active_cs = chip; | |
800 | writew(host->active_cs << 4, NFC_V1_V2_BUF_ADDR); | |
34f6e157 SH |
801 | } |
802 | ||
f8f9608d SH |
803 | /* |
804 | * Function to transfer data to/from spare area. | |
805 | */ | |
806 | static void copy_spare(struct mtd_info *mtd, bool bfrom) | |
34f6e157 | 807 | { |
f8f9608d SH |
808 | struct nand_chip *this = mtd->priv; |
809 | struct mxc_nand_host *host = this->priv; | |
810 | u16 i, j; | |
811 | u16 n = mtd->writesize >> 9; | |
812 | u8 *d = host->data_buf + mtd->writesize; | |
4b6f05e1 | 813 | u8 __iomem *s = host->spare0; |
f48d0f9a | 814 | u16 t = host->devtype_data->spare_len; |
f8f9608d SH |
815 | |
816 | j = (mtd->oobsize / n >> 1) << 1; | |
817 | ||
818 | if (bfrom) { | |
819 | for (i = 0; i < n - 1; i++) | |
096bcc23 | 820 | memcpy32_fromio(d + i * j, s + i * t, j); |
f8f9608d SH |
821 | |
822 | /* the last section */ | |
096bcc23 | 823 | memcpy32_fromio(d + i * j, s + i * t, mtd->oobsize - i * j); |
f8f9608d SH |
824 | } else { |
825 | for (i = 0; i < n - 1; i++) | |
096bcc23 | 826 | memcpy32_toio(&s[i * t], &d[i * j], j); |
34f6e157 | 827 | |
f8f9608d | 828 | /* the last section */ |
096bcc23 | 829 | memcpy32_toio(&s[i * t], &d[i * j], mtd->oobsize - i * j); |
34f6e157 | 830 | } |
f8f9608d | 831 | } |
34f6e157 | 832 | |
a3e65b64 SH |
833 | static void mxc_do_addr_cycle(struct mtd_info *mtd, int column, int page_addr) |
834 | { | |
835 | struct nand_chip *nand_chip = mtd->priv; | |
836 | struct mxc_nand_host *host = nand_chip->priv; | |
34f6e157 SH |
837 | |
838 | /* Write out column address, if necessary */ | |
839 | if (column != -1) { | |
840 | /* | |
841 | * MXC NANDFC can only perform full page+spare or | |
842 | * spare-only read/write. When the upper layers | |
177b241d GE |
843 | * perform a read/write buf operation, the saved column |
844 | * address is used to index into the full page. | |
34f6e157 | 845 | */ |
e4303b25 | 846 | host->devtype_data->send_addr(host, 0, page_addr == -1); |
2d69c7fa | 847 | if (mtd->writesize > 512) |
34f6e157 | 848 | /* another col addr cycle for 2k page */ |
e4303b25 | 849 | host->devtype_data->send_addr(host, 0, false); |
34f6e157 SH |
850 | } |
851 | ||
852 | /* Write out page address, if necessary */ | |
853 | if (page_addr != -1) { | |
854 | /* paddr_0 - p_addr_7 */ | |
e4303b25 | 855 | host->devtype_data->send_addr(host, (page_addr & 0xff), false); |
34f6e157 | 856 | |
2d69c7fa | 857 | if (mtd->writesize > 512) { |
bd3fd62e VB |
858 | if (mtd->size >= 0x10000000) { |
859 | /* paddr_8 - paddr_15 */ | |
e4303b25 UKK |
860 | host->devtype_data->send_addr(host, |
861 | (page_addr >> 8) & 0xff, | |
862 | false); | |
863 | host->devtype_data->send_addr(host, | |
864 | (page_addr >> 16) & 0xff, | |
865 | true); | |
bd3fd62e VB |
866 | } else |
867 | /* paddr_8 - paddr_15 */ | |
e4303b25 UKK |
868 | host->devtype_data->send_addr(host, |
869 | (page_addr >> 8) & 0xff, true); | |
34f6e157 SH |
870 | } else { |
871 | /* One more address cycle for higher density devices */ | |
872 | if (mtd->size >= 0x4000000) { | |
873 | /* paddr_8 - paddr_15 */ | |
e4303b25 UKK |
874 | host->devtype_data->send_addr(host, |
875 | (page_addr >> 8) & 0xff, | |
876 | false); | |
877 | host->devtype_data->send_addr(host, | |
878 | (page_addr >> 16) & 0xff, | |
879 | true); | |
34f6e157 SH |
880 | } else |
881 | /* paddr_8 - paddr_15 */ | |
e4303b25 UKK |
882 | host->devtype_data->send_addr(host, |
883 | (page_addr >> 8) & 0xff, true); | |
34f6e157 SH |
884 | } |
885 | } | |
a3e65b64 SH |
886 | } |
887 | ||
6e85dfdc SH |
888 | /* |
889 | * v2 and v3 type controllers can do 4bit or 8bit ecc depending | |
890 | * on how much oob the nand chip has. For 8bit ecc we need at least | |
891 | * 26 bytes of oob data per 512 byte block. | |
892 | */ | |
893 | static int get_eccsize(struct mtd_info *mtd) | |
894 | { | |
895 | int oobbytes_per_512 = 0; | |
896 | ||
897 | oobbytes_per_512 = mtd->oobsize * 512 / mtd->writesize; | |
898 | ||
899 | if (oobbytes_per_512 < 26) | |
900 | return 4; | |
901 | else | |
902 | return 8; | |
903 | } | |
904 | ||
6d38af25 | 905 | static void preset_v1(struct mtd_info *mtd) |
d4840180 IC |
906 | { |
907 | struct nand_chip *nand_chip = mtd->priv; | |
908 | struct mxc_nand_host *host = nand_chip->priv; | |
b8db2f51 SH |
909 | uint16_t config1 = 0; |
910 | ||
911 | if (nand_chip->ecc.mode == NAND_ECC_HW) | |
912 | config1 |= NFC_V1_V2_CONFIG1_ECC_EN; | |
913 | ||
f48d0f9a | 914 | if (!host->devtype_data->irqpending_quirk) |
6d38af25 UKK |
915 | config1 |= NFC_V1_V2_CONFIG1_INT_MSK; |
916 | ||
917 | host->eccsize = 1; | |
918 | ||
919 | writew(config1, NFC_V1_V2_CONFIG1); | |
920 | /* preset operation */ | |
921 | ||
922 | /* Unlock the internal RAM Buffer */ | |
923 | writew(0x2, NFC_V1_V2_CONFIG); | |
924 | ||
925 | /* Blocks to be unlocked */ | |
926 | writew(0x0, NFC_V1_UNLOCKSTART_BLKADDR); | |
927 | writew(0xffff, NFC_V1_UNLOCKEND_BLKADDR); | |
928 | ||
929 | /* Unlock Block Command for given address range */ | |
930 | writew(0x4, NFC_V1_V2_WRPROT); | |
931 | } | |
932 | ||
933 | static void preset_v2(struct mtd_info *mtd) | |
d4840180 IC |
934 | { |
935 | struct nand_chip *nand_chip = mtd->priv; | |
936 | struct mxc_nand_host *host = nand_chip->priv; | |
b8db2f51 SH |
937 | uint16_t config1 = 0; |
938 | ||
939 | if (nand_chip->ecc.mode == NAND_ECC_HW) | |
940 | config1 |= NFC_V1_V2_CONFIG1_ECC_EN; | |
941 | ||
6d38af25 | 942 | config1 |= NFC_V2_CONFIG1_FP_INT; |
b8db2f51 | 943 | |
f48d0f9a | 944 | if (!host->devtype_data->irqpending_quirk) |
b8db2f51 | 945 | config1 |= NFC_V1_V2_CONFIG1_INT_MSK; |
6e85dfdc | 946 | |
6d38af25 | 947 | if (mtd->writesize) { |
b8db2f51 SH |
948 | uint16_t pages_per_block = mtd->erasesize / mtd->writesize; |
949 | ||
6e85dfdc SH |
950 | host->eccsize = get_eccsize(mtd); |
951 | if (host->eccsize == 4) | |
b8db2f51 SH |
952 | config1 |= NFC_V2_CONFIG1_ECC_MODE_4; |
953 | ||
954 | config1 |= NFC_V2_CONFIG1_PPB(ffs(pages_per_block) - 6); | |
d4840180 | 955 | } else { |
6e85dfdc | 956 | host->eccsize = 1; |
d4840180 | 957 | } |
6e85dfdc | 958 | |
b8db2f51 | 959 | writew(config1, NFC_V1_V2_CONFIG1); |
d4840180 IC |
960 | /* preset operation */ |
961 | ||
962 | /* Unlock the internal RAM Buffer */ | |
1bc99180 | 963 | writew(0x2, NFC_V1_V2_CONFIG); |
d4840180 IC |
964 | |
965 | /* Blocks to be unlocked */ | |
6d38af25 UKK |
966 | writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR0); |
967 | writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR1); | |
968 | writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR2); | |
969 | writew(0x0, NFC_V21_UNLOCKSTART_BLKADDR3); | |
970 | writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR0); | |
971 | writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR1); | |
972 | writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR2); | |
973 | writew(0xffff, NFC_V21_UNLOCKEND_BLKADDR3); | |
d4840180 IC |
974 | |
975 | /* Unlock Block Command for given address range */ | |
1bc99180 | 976 | writew(0x4, NFC_V1_V2_WRPROT); |
d4840180 IC |
977 | } |
978 | ||
71ec5155 SH |
979 | static void preset_v3(struct mtd_info *mtd) |
980 | { | |
981 | struct nand_chip *chip = mtd->priv; | |
982 | struct mxc_nand_host *host = chip->priv; | |
983 | uint32_t config2, config3; | |
984 | int i, addr_phases; | |
985 | ||
986 | writel(NFC_V3_CONFIG1_RBA(0), NFC_V3_CONFIG1); | |
987 | writel(NFC_V3_IPC_CREQ, NFC_V3_IPC); | |
988 | ||
989 | /* Unlock the internal RAM Buffer */ | |
990 | writel(NFC_V3_WRPROT_BLS_UNLOCK | NFC_V3_WRPROT_UNLOCK, | |
991 | NFC_V3_WRPROT); | |
992 | ||
993 | /* Blocks to be unlocked */ | |
994 | for (i = 0; i < NAND_MAX_CHIPS; i++) | |
995 | writel(0x0 | (0xffff << 16), | |
996 | NFC_V3_WRPROT_UNLOCK_BLK_ADD0 + (i << 2)); | |
997 | ||
998 | writel(0, NFC_V3_IPC); | |
999 | ||
1000 | config2 = NFC_V3_CONFIG2_ONE_CYCLE | | |
1001 | NFC_V3_CONFIG2_2CMD_PHASES | | |
1002 | NFC_V3_CONFIG2_SPAS(mtd->oobsize >> 1) | | |
1003 | NFC_V3_CONFIG2_ST_CMD(0x70) | | |
63f1474c | 1004 | NFC_V3_CONFIG2_INT_MSK | |
71ec5155 SH |
1005 | NFC_V3_CONFIG2_NUM_ADDR_PHASE0; |
1006 | ||
1007 | if (chip->ecc.mode == NAND_ECC_HW) | |
1008 | config2 |= NFC_V3_CONFIG2_ECC_EN; | |
1009 | ||
1010 | addr_phases = fls(chip->pagemask) >> 3; | |
1011 | ||
1012 | if (mtd->writesize == 2048) { | |
1013 | config2 |= NFC_V3_CONFIG2_PS_2048; | |
1014 | config2 |= NFC_V3_CONFIG2_NUM_ADDR_PHASE1(addr_phases); | |
1015 | } else if (mtd->writesize == 4096) { | |
1016 | config2 |= NFC_V3_CONFIG2_PS_4096; | |
1017 | config2 |= NFC_V3_CONFIG2_NUM_ADDR_PHASE1(addr_phases); | |
1018 | } else { | |
1019 | config2 |= NFC_V3_CONFIG2_PS_512; | |
1020 | config2 |= NFC_V3_CONFIG2_NUM_ADDR_PHASE1(addr_phases - 1); | |
1021 | } | |
1022 | ||
1023 | if (mtd->writesize) { | |
1024 | config2 |= NFC_V3_CONFIG2_PPB(ffs(mtd->erasesize / mtd->writesize) - 6); | |
1025 | host->eccsize = get_eccsize(mtd); | |
1026 | if (host->eccsize == 8) | |
1027 | config2 |= NFC_V3_CONFIG2_ECC_MODE_8; | |
1028 | } | |
1029 | ||
1030 | writel(config2, NFC_V3_CONFIG2); | |
1031 | ||
1032 | config3 = NFC_V3_CONFIG3_NUM_OF_DEVICES(0) | | |
1033 | NFC_V3_CONFIG3_NO_SDMA | | |
1034 | NFC_V3_CONFIG3_RBB_MODE | | |
1035 | NFC_V3_CONFIG3_SBB(6) | /* Reset default */ | |
1036 | NFC_V3_CONFIG3_ADD_OP(0); | |
1037 | ||
1038 | if (!(chip->options & NAND_BUSWIDTH_16)) | |
1039 | config3 |= NFC_V3_CONFIG3_FW8; | |
1040 | ||
1041 | writel(config3, NFC_V3_CONFIG3); | |
1042 | ||
1043 | writel(0, NFC_V3_DELAY_LINE); | |
d4840180 IC |
1044 | } |
1045 | ||
34f6e157 SH |
1046 | /* Used by the upper layer to write command to NAND Flash for |
1047 | * different operations to be carried out on NAND Flash */ | |
1048 | static void mxc_nand_command(struct mtd_info *mtd, unsigned command, | |
1049 | int column, int page_addr) | |
1050 | { | |
1051 | struct nand_chip *nand_chip = mtd->priv; | |
1052 | struct mxc_nand_host *host = nand_chip->priv; | |
34f6e157 | 1053 | |
289c0522 | 1054 | pr_debug("mxc_nand_command (cmd = 0x%x, col = 0x%x, page = 0x%x)\n", |
34f6e157 SH |
1055 | command, column, page_addr); |
1056 | ||
1057 | /* Reset command state information */ | |
1058 | host->status_request = false; | |
34f6e157 | 1059 | |
34f6e157 | 1060 | /* Command pre-processing step */ |
34f6e157 | 1061 | switch (command) { |
d4840180 | 1062 | case NAND_CMD_RESET: |
e4303b25 UKK |
1063 | host->devtype_data->preset(mtd); |
1064 | host->devtype_data->send_cmd(host, command, false); | |
d4840180 | 1065 | break; |
34f6e157 | 1066 | |
34f6e157 | 1067 | case NAND_CMD_STATUS: |
f8f9608d | 1068 | host->buf_start = 0; |
34f6e157 | 1069 | host->status_request = true; |
34f6e157 | 1070 | |
e4303b25 | 1071 | host->devtype_data->send_cmd(host, command, true); |
89121a6b | 1072 | mxc_do_addr_cycle(mtd, column, page_addr); |
34f6e157 SH |
1073 | break; |
1074 | ||
34f6e157 | 1075 | case NAND_CMD_READ0: |
34f6e157 | 1076 | case NAND_CMD_READOOB: |
89121a6b SH |
1077 | if (command == NAND_CMD_READ0) |
1078 | host->buf_start = column; | |
1079 | else | |
1080 | host->buf_start = column + mtd->writesize; | |
f8f9608d | 1081 | |
5ea32021 | 1082 | command = NAND_CMD_READ0; /* only READ0 is valid */ |
89121a6b | 1083 | |
e4303b25 | 1084 | host->devtype_data->send_cmd(host, command, false); |
89121a6b SH |
1085 | mxc_do_addr_cycle(mtd, column, page_addr); |
1086 | ||
2d69c7fa | 1087 | if (mtd->writesize > 512) |
e4303b25 UKK |
1088 | host->devtype_data->send_cmd(host, |
1089 | NAND_CMD_READSTART, true); | |
c5d23f1b | 1090 | |
e4303b25 | 1091 | host->devtype_data->send_page(mtd, NFC_OUTPUT); |
89121a6b | 1092 | |
096bcc23 SH |
1093 | memcpy32_fromio(host->data_buf, host->main_area0, |
1094 | mtd->writesize); | |
89121a6b | 1095 | copy_spare(mtd, true); |
34f6e157 SH |
1096 | break; |
1097 | ||
34f6e157 | 1098 | case NAND_CMD_SEQIN: |
5ea32021 SH |
1099 | if (column >= mtd->writesize) |
1100 | /* call ourself to read a page */ | |
1101 | mxc_nand_command(mtd, NAND_CMD_READ0, 0, page_addr); | |
34f6e157 | 1102 | |
5ea32021 | 1103 | host->buf_start = column; |
89121a6b | 1104 | |
e4303b25 | 1105 | host->devtype_data->send_cmd(host, command, false); |
89121a6b | 1106 | mxc_do_addr_cycle(mtd, column, page_addr); |
34f6e157 SH |
1107 | break; |
1108 | ||
1109 | case NAND_CMD_PAGEPROG: | |
096bcc23 | 1110 | memcpy32_toio(host->main_area0, host->data_buf, mtd->writesize); |
f8f9608d | 1111 | copy_spare(mtd, false); |
e4303b25 UKK |
1112 | host->devtype_data->send_page(mtd, NFC_INPUT); |
1113 | host->devtype_data->send_cmd(host, command, true); | |
89121a6b | 1114 | mxc_do_addr_cycle(mtd, column, page_addr); |
34f6e157 SH |
1115 | break; |
1116 | ||
34f6e157 | 1117 | case NAND_CMD_READID: |
e4303b25 | 1118 | host->devtype_data->send_cmd(host, command, true); |
89121a6b | 1119 | mxc_do_addr_cycle(mtd, column, page_addr); |
e4303b25 | 1120 | host->devtype_data->send_read_id(host); |
9467114e | 1121 | host->buf_start = column; |
34f6e157 SH |
1122 | break; |
1123 | ||
89121a6b | 1124 | case NAND_CMD_ERASE1: |
34f6e157 | 1125 | case NAND_CMD_ERASE2: |
e4303b25 | 1126 | host->devtype_data->send_cmd(host, command, false); |
89121a6b SH |
1127 | mxc_do_addr_cycle(mtd, column, page_addr); |
1128 | ||
34f6e157 SH |
1129 | break; |
1130 | } | |
1131 | } | |
1132 | ||
f1372055 SH |
1133 | /* |
1134 | * The generic flash bbt decriptors overlap with our ecc | |
1135 | * hardware, so define some i.MX specific ones. | |
1136 | */ | |
1137 | static uint8_t bbt_pattern[] = { 'B', 'b', 't', '0' }; | |
1138 | static uint8_t mirror_pattern[] = { '1', 't', 'b', 'B' }; | |
1139 | ||
1140 | static struct nand_bbt_descr bbt_main_descr = { | |
1141 | .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE | |
1142 | | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, | |
1143 | .offs = 0, | |
1144 | .len = 4, | |
1145 | .veroffs = 4, | |
1146 | .maxblocks = 4, | |
1147 | .pattern = bbt_pattern, | |
1148 | }; | |
1149 | ||
1150 | static struct nand_bbt_descr bbt_mirror_descr = { | |
1151 | .options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE | NAND_BBT_WRITE | |
1152 | | NAND_BBT_2BIT | NAND_BBT_VERSION | NAND_BBT_PERCHIP, | |
1153 | .offs = 0, | |
1154 | .len = 4, | |
1155 | .veroffs = 4, | |
1156 | .maxblocks = 4, | |
1157 | .pattern = mirror_pattern, | |
1158 | }; | |
1159 | ||
f48d0f9a | 1160 | /* v1 + irqpending_quirk: i.MX21 */ |
e4303b25 | 1161 | static const struct mxc_nand_devtype_data imx21_nand_devtype_data = { |
6d38af25 | 1162 | .preset = preset_v1, |
e4303b25 UKK |
1163 | .send_cmd = send_cmd_v1_v2, |
1164 | .send_addr = send_addr_v1_v2, | |
6d38af25 | 1165 | .send_page = send_page_v1, |
e4303b25 UKK |
1166 | .send_read_id = send_read_id_v1_v2, |
1167 | .get_dev_status = get_dev_status_v1_v2, | |
1168 | .check_int = check_int_v1_v2, | |
1169 | .irq_control = irq_control_v1_v2, | |
6d38af25 | 1170 | .get_ecc_status = get_ecc_status_v1, |
6dcdf99d UKK |
1171 | .ecclayout_512 = &nandv1_hw_eccoob_smallpage, |
1172 | .ecclayout_2k = &nandv1_hw_eccoob_largepage, | |
1173 | .ecclayout_4k = &nandv1_hw_eccoob_smallpage, /* XXX: needs fix */ | |
5e05a2d6 | 1174 | .select_chip = mxc_nand_select_chip_v1_v3, |
69d023be | 1175 | .correct_data = mxc_nand_correct_data_v1, |
f48d0f9a UKK |
1176 | .irqpending_quirk = 1, |
1177 | .needs_ip = 0, | |
1178 | .regs_offset = 0xe00, | |
1179 | .spare0_offset = 0x800, | |
1180 | .spare_len = 16, | |
1181 | .eccbytes = 3, | |
1182 | .eccsize = 1, | |
1183 | }; | |
1184 | ||
1185 | /* v1 + !irqpending_quirk: i.MX27, i.MX31 */ | |
1186 | static const struct mxc_nand_devtype_data imx27_nand_devtype_data = { | |
1187 | .preset = preset_v1, | |
1188 | .send_cmd = send_cmd_v1_v2, | |
1189 | .send_addr = send_addr_v1_v2, | |
1190 | .send_page = send_page_v1, | |
1191 | .send_read_id = send_read_id_v1_v2, | |
1192 | .get_dev_status = get_dev_status_v1_v2, | |
1193 | .check_int = check_int_v1_v2, | |
1194 | .irq_control = irq_control_v1_v2, | |
1195 | .get_ecc_status = get_ecc_status_v1, | |
1196 | .ecclayout_512 = &nandv1_hw_eccoob_smallpage, | |
1197 | .ecclayout_2k = &nandv1_hw_eccoob_largepage, | |
1198 | .ecclayout_4k = &nandv1_hw_eccoob_smallpage, /* XXX: needs fix */ | |
1199 | .select_chip = mxc_nand_select_chip_v1_v3, | |
1200 | .correct_data = mxc_nand_correct_data_v1, | |
1201 | .irqpending_quirk = 0, | |
1202 | .needs_ip = 0, | |
1203 | .regs_offset = 0xe00, | |
1204 | .spare0_offset = 0x800, | |
1205 | .axi_offset = 0, | |
1206 | .spare_len = 16, | |
1207 | .eccbytes = 3, | |
1208 | .eccsize = 1, | |
e4303b25 UKK |
1209 | }; |
1210 | ||
1211 | /* v21: i.MX25, i.MX35 */ | |
1212 | static const struct mxc_nand_devtype_data imx25_nand_devtype_data = { | |
6d38af25 | 1213 | .preset = preset_v2, |
e4303b25 UKK |
1214 | .send_cmd = send_cmd_v1_v2, |
1215 | .send_addr = send_addr_v1_v2, | |
6d38af25 | 1216 | .send_page = send_page_v2, |
e4303b25 UKK |
1217 | .send_read_id = send_read_id_v1_v2, |
1218 | .get_dev_status = get_dev_status_v1_v2, | |
1219 | .check_int = check_int_v1_v2, | |
1220 | .irq_control = irq_control_v1_v2, | |
6d38af25 | 1221 | .get_ecc_status = get_ecc_status_v2, |
6dcdf99d UKK |
1222 | .ecclayout_512 = &nandv2_hw_eccoob_smallpage, |
1223 | .ecclayout_2k = &nandv2_hw_eccoob_largepage, | |
1224 | .ecclayout_4k = &nandv2_hw_eccoob_4k, | |
5e05a2d6 | 1225 | .select_chip = mxc_nand_select_chip_v2, |
69d023be | 1226 | .correct_data = mxc_nand_correct_data_v2_v3, |
f48d0f9a UKK |
1227 | .irqpending_quirk = 0, |
1228 | .needs_ip = 0, | |
1229 | .regs_offset = 0x1e00, | |
1230 | .spare0_offset = 0x1000, | |
1231 | .axi_offset = 0, | |
1232 | .spare_len = 64, | |
1233 | .eccbytes = 9, | |
1234 | .eccsize = 0, | |
e4303b25 UKK |
1235 | }; |
1236 | ||
1237 | /* v3: i.MX51, i.MX53 */ | |
1238 | static const struct mxc_nand_devtype_data imx51_nand_devtype_data = { | |
1239 | .preset = preset_v3, | |
1240 | .send_cmd = send_cmd_v3, | |
1241 | .send_addr = send_addr_v3, | |
1242 | .send_page = send_page_v3, | |
1243 | .send_read_id = send_read_id_v3, | |
1244 | .get_dev_status = get_dev_status_v3, | |
1245 | .check_int = check_int_v3, | |
1246 | .irq_control = irq_control_v3, | |
6d38af25 | 1247 | .get_ecc_status = get_ecc_status_v3, |
6dcdf99d UKK |
1248 | .ecclayout_512 = &nandv2_hw_eccoob_smallpage, |
1249 | .ecclayout_2k = &nandv2_hw_eccoob_largepage, | |
1250 | .ecclayout_4k = &nandv2_hw_eccoob_smallpage, /* XXX: needs fix */ | |
5e05a2d6 | 1251 | .select_chip = mxc_nand_select_chip_v1_v3, |
69d023be | 1252 | .correct_data = mxc_nand_correct_data_v2_v3, |
f48d0f9a UKK |
1253 | .irqpending_quirk = 0, |
1254 | .needs_ip = 1, | |
1255 | .regs_offset = 0, | |
1256 | .spare0_offset = 0x1000, | |
1257 | .axi_offset = 0x1e00, | |
1258 | .spare_len = 64, | |
1259 | .eccbytes = 0, | |
1260 | .eccsize = 0, | |
e4303b25 UKK |
1261 | }; |
1262 | ||
6436356b UKK |
1263 | #ifdef CONFIG_OF_MTD |
1264 | static const struct of_device_id mxcnd_dt_ids[] = { | |
1265 | { | |
1266 | .compatible = "fsl,imx21-nand", | |
1267 | .data = &imx21_nand_devtype_data, | |
1268 | }, { | |
1269 | .compatible = "fsl,imx27-nand", | |
1270 | .data = &imx27_nand_devtype_data, | |
1271 | }, { | |
1272 | .compatible = "fsl,imx25-nand", | |
1273 | .data = &imx25_nand_devtype_data, | |
1274 | }, { | |
1275 | .compatible = "fsl,imx51-nand", | |
1276 | .data = &imx51_nand_devtype_data, | |
1277 | }, | |
1278 | { /* sentinel */ } | |
1279 | }; | |
1280 | ||
1281 | static int __init mxcnd_probe_dt(struct mxc_nand_host *host) | |
1282 | { | |
1283 | struct device_node *np = host->dev->of_node; | |
1284 | struct mxc_nand_platform_data *pdata = &host->pdata; | |
1285 | const struct of_device_id *of_id = | |
1286 | of_match_device(mxcnd_dt_ids, host->dev); | |
1287 | int buswidth; | |
1288 | ||
1289 | if (!np) | |
1290 | return 1; | |
1291 | ||
1292 | if (of_get_nand_ecc_mode(np) >= 0) | |
1293 | pdata->hw_ecc = 1; | |
1294 | ||
1295 | pdata->flash_bbt = of_get_nand_on_flash_bbt(np); | |
1296 | ||
1297 | buswidth = of_get_nand_bus_width(np); | |
1298 | if (buswidth < 0) | |
1299 | return buswidth; | |
1300 | ||
1301 | pdata->width = buswidth / 8; | |
1302 | ||
1303 | host->devtype_data = of_id->data; | |
1304 | ||
1305 | return 0; | |
1306 | } | |
1307 | #else | |
1308 | static int __init mxcnd_probe_dt(struct mxc_nand_host *host) | |
1309 | { | |
1310 | return 1; | |
1311 | } | |
1312 | #endif | |
1313 | ||
1314 | static int __init mxcnd_probe_pdata(struct mxc_nand_host *host) | |
1315 | { | |
1316 | struct mxc_nand_platform_data *pdata = host->dev->platform_data; | |
1317 | ||
1318 | if (!pdata) | |
1319 | return -ENODEV; | |
1320 | ||
1321 | host->pdata = *pdata; | |
1322 | ||
1323 | if (nfc_is_v1()) { | |
1324 | if (cpu_is_mx21()) | |
1325 | host->devtype_data = &imx21_nand_devtype_data; | |
1326 | else | |
1327 | host->devtype_data = &imx27_nand_devtype_data; | |
1328 | } else if (nfc_is_v21()) { | |
1329 | host->devtype_data = &imx25_nand_devtype_data; | |
1330 | } else if (nfc_is_v3_2()) { | |
1331 | host->devtype_data = &imx51_nand_devtype_data; | |
1332 | } else | |
1333 | BUG(); | |
1334 | ||
1335 | return 0; | |
1336 | } | |
1337 | ||
34f6e157 SH |
1338 | static int __init mxcnd_probe(struct platform_device *pdev) |
1339 | { | |
1340 | struct nand_chip *this; | |
1341 | struct mtd_info *mtd; | |
34f6e157 SH |
1342 | struct mxc_nand_host *host; |
1343 | struct resource *res; | |
d4ed8f12 | 1344 | int err = 0; |
34f6e157 SH |
1345 | |
1346 | /* Allocate memory for MTD device structure and private data */ | |
e4a09cbf SH |
1347 | host = devm_kzalloc(&pdev->dev, sizeof(struct mxc_nand_host) + |
1348 | NAND_MAX_PAGESIZE + NAND_MAX_OOBSIZE, GFP_KERNEL); | |
34f6e157 SH |
1349 | if (!host) |
1350 | return -ENOMEM; | |
1351 | ||
f8f9608d | 1352 | host->data_buf = (uint8_t *)(host + 1); |
f8f9608d | 1353 | |
34f6e157 SH |
1354 | host->dev = &pdev->dev; |
1355 | /* structures must be linked */ | |
1356 | this = &host->nand; | |
1357 | mtd = &host->mtd; | |
1358 | mtd->priv = this; | |
1359 | mtd->owner = THIS_MODULE; | |
87f39f04 | 1360 | mtd->dev.parent = &pdev->dev; |
1fbff0a6 | 1361 | mtd->name = DRIVER_NAME; |
34f6e157 SH |
1362 | |
1363 | /* 50 us command delay time */ | |
1364 | this->chip_delay = 5; | |
1365 | ||
1366 | this->priv = host; | |
1367 | this->dev_ready = mxc_nand_dev_ready; | |
1368 | this->cmdfunc = mxc_nand_command; | |
34f6e157 SH |
1369 | this->read_byte = mxc_nand_read_byte; |
1370 | this->read_word = mxc_nand_read_word; | |
1371 | this->write_buf = mxc_nand_write_buf; | |
1372 | this->read_buf = mxc_nand_read_buf; | |
1373 | this->verify_buf = mxc_nand_verify_buf; | |
1374 | ||
e4a09cbf SH |
1375 | host->clk = devm_clk_get(&pdev->dev, "nfc"); |
1376 | if (IS_ERR(host->clk)) | |
1377 | return PTR_ERR(host->clk); | |
34f6e157 SH |
1378 | |
1379 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
e4a09cbf SH |
1380 | if (!res) |
1381 | return -ENODEV; | |
34f6e157 | 1382 | |
e4a09cbf SH |
1383 | host->base = devm_request_and_ioremap(&pdev->dev, res); |
1384 | if (!host->base) | |
1385 | return -ENOMEM; | |
34f6e157 | 1386 | |
c6de7e1b | 1387 | host->main_area0 = host->base; |
9467114e | 1388 | |
6436356b UKK |
1389 | err = mxcnd_probe_dt(host); |
1390 | if (err > 0) | |
1391 | err = mxcnd_probe_pdata(host); | |
1392 | if (err < 0) | |
e4a09cbf | 1393 | return err; |
9467114e | 1394 | |
f48d0f9a UKK |
1395 | if (host->devtype_data->regs_offset) |
1396 | host->regs = host->base + host->devtype_data->regs_offset; | |
1397 | host->spare0 = host->base + host->devtype_data->spare0_offset; | |
1398 | if (host->devtype_data->axi_offset) | |
1399 | host->regs_axi = host->base + host->devtype_data->axi_offset; | |
1400 | ||
1401 | this->ecc.bytes = host->devtype_data->eccbytes; | |
1402 | host->eccsize = host->devtype_data->eccsize; | |
1403 | ||
1404 | this->select_chip = host->devtype_data->select_chip; | |
1405 | this->ecc.size = 512; | |
1406 | this->ecc.layout = host->devtype_data->ecclayout_512; | |
1407 | ||
1408 | if (host->devtype_data->needs_ip) { | |
71ec5155 | 1409 | res = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
e4a09cbf SH |
1410 | if (!res) |
1411 | return -ENODEV; | |
1412 | host->regs_ip = devm_request_and_ioremap(&pdev->dev, res); | |
1413 | if (!host->regs_ip) | |
1414 | return -ENOMEM; | |
f48d0f9a | 1415 | } |
13e1add1 | 1416 | |
6436356b | 1417 | if (host->pdata.hw_ecc) { |
34f6e157 SH |
1418 | this->ecc.calculate = mxc_nand_calculate_ecc; |
1419 | this->ecc.hwctl = mxc_nand_enable_hwecc; | |
69d023be | 1420 | this->ecc.correct = host->devtype_data->correct_data; |
34f6e157 | 1421 | this->ecc.mode = NAND_ECC_HW; |
34f6e157 | 1422 | } else { |
34f6e157 | 1423 | this->ecc.mode = NAND_ECC_SOFT; |
34f6e157 SH |
1424 | } |
1425 | ||
6436356b UKK |
1426 | /* NAND bus width determines access functions used by upper layer */ |
1427 | if (host->pdata.width == 2) | |
34f6e157 | 1428 | this->options |= NAND_BUSWIDTH_16; |
34f6e157 | 1429 | |
6436356b | 1430 | if (host->pdata.flash_bbt) { |
f1372055 SH |
1431 | this->bbt_td = &bbt_main_descr; |
1432 | this->bbt_md = &bbt_mirror_descr; | |
1433 | /* update flash based bbt */ | |
bb9ebd4e | 1434 | this->bbt_options |= NAND_BBT_USE_FLASH; |
34f6e157 SH |
1435 | } |
1436 | ||
63f1474c | 1437 | init_completion(&host->op_completion); |
d4840180 IC |
1438 | |
1439 | host->irq = platform_get_irq(pdev, 0); | |
1440 | ||
63f1474c | 1441 | /* |
e4303b25 UKK |
1442 | * Use host->devtype_data->irq_control() here instead of irq_control() |
1443 | * because we must not disable_irq_nosync without having requested the | |
1444 | * irq. | |
63f1474c | 1445 | */ |
e4303b25 | 1446 | host->devtype_data->irq_control(host, 0); |
63f1474c | 1447 | |
e4a09cbf SH |
1448 | err = devm_request_irq(&pdev->dev, host->irq, mxc_nfc_irq, |
1449 | IRQF_DISABLED, DRIVER_NAME, host); | |
d4840180 | 1450 | if (err) |
e4a09cbf SH |
1451 | return err; |
1452 | ||
1453 | clk_prepare_enable(host->clk); | |
1454 | host->clk_act = 1; | |
d4840180 | 1455 | |
63f1474c | 1456 | /* |
8556958a UKK |
1457 | * Now that we "own" the interrupt make sure the interrupt mask bit is |
1458 | * cleared on i.MX21. Otherwise we can't read the interrupt status bit | |
1459 | * on this machine. | |
63f1474c | 1460 | */ |
f48d0f9a | 1461 | if (host->devtype_data->irqpending_quirk) { |
8556958a | 1462 | disable_irq_nosync(host->irq); |
e4303b25 | 1463 | host->devtype_data->irq_control(host, 1); |
8556958a | 1464 | } |
63f1474c | 1465 | |
bd3fd62e | 1466 | /* first scan to find the device and get the page size */ |
d178e3e8 | 1467 | if (nand_scan_ident(mtd, nfc_is_v21() ? 4 : 1, NULL)) { |
bd3fd62e VB |
1468 | err = -ENXIO; |
1469 | goto escan; | |
1470 | } | |
34f6e157 | 1471 | |
6e85dfdc | 1472 | /* Call preset again, with correct writesize this time */ |
e4303b25 | 1473 | host->devtype_data->preset(mtd); |
6e85dfdc | 1474 | |
2d69c7fa | 1475 | if (mtd->writesize == 2048) |
6dcdf99d UKK |
1476 | this->ecc.layout = host->devtype_data->ecclayout_2k; |
1477 | else if (mtd->writesize == 4096) | |
1478 | this->ecc.layout = host->devtype_data->ecclayout_4k; | |
34f6e157 | 1479 | |
6a918bad MD |
1480 | if (this->ecc.mode == NAND_ECC_HW) { |
1481 | if (nfc_is_v1()) | |
1482 | this->ecc.strength = 1; | |
1483 | else | |
1484 | this->ecc.strength = (host->eccsize == 4) ? 4 : 8; | |
1485 | } | |
1486 | ||
4a43faf5 SH |
1487 | /* second phase scan */ |
1488 | if (nand_scan_tail(mtd)) { | |
1489 | err = -ENXIO; | |
1490 | goto escan; | |
1491 | } | |
1492 | ||
34f6e157 | 1493 | /* Register the partitions */ |
6436356b UKK |
1494 | mtd_device_parse_register(mtd, part_probes, |
1495 | &(struct mtd_part_parser_data){ | |
1496 | .of_node = pdev->dev.of_node, | |
1497 | }, | |
1498 | host->pdata.parts, | |
1499 | host->pdata.nr_parts); | |
34f6e157 SH |
1500 | |
1501 | platform_set_drvdata(pdev, host); | |
1502 | ||
1503 | return 0; | |
1504 | ||
1505 | escan: | |
e4a09cbf | 1506 | clk_disable_unprepare(host->clk); |
34f6e157 SH |
1507 | |
1508 | return err; | |
1509 | } | |
1510 | ||
51eeb878 | 1511 | static int __devexit mxcnd_remove(struct platform_device *pdev) |
34f6e157 SH |
1512 | { |
1513 | struct mxc_nand_host *host = platform_get_drvdata(pdev); | |
1514 | ||
34f6e157 SH |
1515 | platform_set_drvdata(pdev, NULL); |
1516 | ||
1517 | nand_release(&host->mtd); | |
34f6e157 SH |
1518 | |
1519 | return 0; | |
1520 | } | |
1521 | ||
34f6e157 SH |
1522 | static struct platform_driver mxcnd_driver = { |
1523 | .driver = { | |
1524 | .name = DRIVER_NAME, | |
8d1fd16d | 1525 | .owner = THIS_MODULE, |
6436356b | 1526 | .of_match_table = of_match_ptr(mxcnd_dt_ids), |
04dd0d3a | 1527 | }, |
daa0f15a | 1528 | .remove = __devexit_p(mxcnd_remove), |
34f6e157 SH |
1529 | }; |
1530 | ||
1531 | static int __init mxc_nd_init(void) | |
1532 | { | |
8541c118 | 1533 | return platform_driver_probe(&mxcnd_driver, mxcnd_probe); |
34f6e157 SH |
1534 | } |
1535 | ||
1536 | static void __exit mxc_nd_cleanup(void) | |
1537 | { | |
1538 | /* Unregister the device structure */ | |
1539 | platform_driver_unregister(&mxcnd_driver); | |
1540 | } | |
1541 | ||
1542 | module_init(mxc_nd_init); | |
1543 | module_exit(mxc_nd_cleanup); | |
1544 | ||
1545 | MODULE_AUTHOR("Freescale Semiconductor, Inc."); | |
1546 | MODULE_DESCRIPTION("MXC NAND MTD driver"); | |
1547 | MODULE_LICENSE("GPL"); |