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path: root/drivers/mtd/chips/cfi_probe.c
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Diffstat (limited to 'drivers/mtd/chips/cfi_probe.c')
-rw-r--r--drivers/mtd/chips/cfi_probe.c98
1 files changed, 49 insertions, 49 deletions
diff --git a/drivers/mtd/chips/cfi_probe.c b/drivers/mtd/chips/cfi_probe.c
index cf750038ce6a..90eb30e06b7c 100644
--- a/drivers/mtd/chips/cfi_probe.c
+++ b/drivers/mtd/chips/cfi_probe.c
@@ -1,7 +1,7 @@
1/* 1/*
2 Common Flash Interface probe code. 2 Common Flash Interface probe code.
3 (C) 2000 Red Hat. GPL'd. 3 (C) 2000 Red Hat. GPL'd.
4 $Id: cfi_probe.c,v 1.83 2004/11/16 18:19:02 nico Exp $ 4 $Id: cfi_probe.c,v 1.84 2005/11/07 11:14:23 gleixner Exp $
5*/ 5*/
6 6
7#include <linux/config.h> 7#include <linux/config.h>
@@ -20,7 +20,7 @@
20#include <linux/mtd/cfi.h> 20#include <linux/mtd/cfi.h>
21#include <linux/mtd/gen_probe.h> 21#include <linux/mtd/gen_probe.h>
22 22
23//#define DEBUG_CFI 23//#define DEBUG_CFI
24 24
25#ifdef DEBUG_CFI 25#ifdef DEBUG_CFI
26static void print_cfi_ident(struct cfi_ident *); 26static void print_cfi_ident(struct cfi_ident *);
@@ -103,7 +103,7 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base,
103 unsigned long *chip_map, struct cfi_private *cfi) 103 unsigned long *chip_map, struct cfi_private *cfi)
104{ 104{
105 int i; 105 int i;
106 106
107 if ((base + 0) >= map->size) { 107 if ((base + 0) >= map->size) {
108 printk(KERN_NOTICE 108 printk(KERN_NOTICE
109 "Probe at base[0x00](0x%08lx) past the end of the map(0x%08lx)\n", 109 "Probe at base[0x00](0x%08lx) past the end of the map(0x%08lx)\n",
@@ -128,7 +128,7 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base,
128 } 128 }
129 129
130 if (!cfi->numchips) { 130 if (!cfi->numchips) {
131 /* This is the first time we're called. Set up the CFI 131 /* This is the first time we're called. Set up the CFI
132 stuff accordingly and return */ 132 stuff accordingly and return */
133 return cfi_chip_setup(map, cfi); 133 return cfi_chip_setup(map, cfi);
134 } 134 }
@@ -138,13 +138,13 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base,
138 unsigned long start; 138 unsigned long start;
139 if(!test_bit(i, chip_map)) { 139 if(!test_bit(i, chip_map)) {
140 /* Skip location; no valid chip at this address */ 140 /* Skip location; no valid chip at this address */
141 continue; 141 continue;
142 } 142 }
143 start = i << cfi->chipshift; 143 start = i << cfi->chipshift;
144 /* This chip should be in read mode if it's one 144 /* This chip should be in read mode if it's one
145 we've already touched. */ 145 we've already touched. */
146 if (qry_present(map, start, cfi)) { 146 if (qry_present(map, start, cfi)) {
147 /* Eep. This chip also had the QRY marker. 147 /* Eep. This chip also had the QRY marker.
148 * Is it an alias for the new one? */ 148 * Is it an alias for the new one? */
149 cfi_send_gen_cmd(0xF0, 0, start, map, cfi, cfi->device_type, NULL); 149 cfi_send_gen_cmd(0xF0, 0, start, map, cfi, cfi->device_type, NULL);
150 cfi_send_gen_cmd(0xFF, 0, start, map, cfi, cfi->device_type, NULL); 150 cfi_send_gen_cmd(0xFF, 0, start, map, cfi, cfi->device_type, NULL);
@@ -156,13 +156,13 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base,
156 map->name, base, start); 156 map->name, base, start);
157 return 0; 157 return 0;
158 } 158 }
159 /* Yes, it's actually got QRY for data. Most 159 /* Yes, it's actually got QRY for data. Most
160 * unfortunate. Stick the new chip in read mode 160 * unfortunate. Stick the new chip in read mode
161 * too and if it's the same, assume it's an alias. */ 161 * too and if it's the same, assume it's an alias. */
162 /* FIXME: Use other modes to do a proper check */ 162 /* FIXME: Use other modes to do a proper check */
163 cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); 163 cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
164 cfi_send_gen_cmd(0xFF, 0, start, map, cfi, cfi->device_type, NULL); 164 cfi_send_gen_cmd(0xFF, 0, start, map, cfi, cfi->device_type, NULL);
165 165
166 if (qry_present(map, base, cfi)) { 166 if (qry_present(map, base, cfi)) {
167 xip_allowed(base, map); 167 xip_allowed(base, map);
168 printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n", 168 printk(KERN_DEBUG "%s: Found an alias at 0x%x for the chip at 0x%lx\n",
@@ -171,12 +171,12 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base,
171 } 171 }
172 } 172 }
173 } 173 }
174 174
175 /* OK, if we got to here, then none of the previous chips appear to 175 /* OK, if we got to here, then none of the previous chips appear to
176 be aliases for the current one. */ 176 be aliases for the current one. */
177 set_bit((base >> cfi->chipshift), chip_map); /* Update chip map */ 177 set_bit((base >> cfi->chipshift), chip_map); /* Update chip map */
178 cfi->numchips++; 178 cfi->numchips++;
179 179
180 /* Put it back into Read Mode */ 180 /* Put it back into Read Mode */
181 cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); 181 cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
182 cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL); 182 cfi_send_gen_cmd(0xFF, 0, base, map, cfi, cfi->device_type, NULL);
@@ -185,11 +185,11 @@ static int __xipram cfi_probe_chip(struct map_info *map, __u32 base,
185 printk(KERN_INFO "%s: Found %d x%d devices at 0x%x in %d-bit bank\n", 185 printk(KERN_INFO "%s: Found %d x%d devices at 0x%x in %d-bit bank\n",
186 map->name, cfi->interleave, cfi->device_type*8, base, 186 map->name, cfi->interleave, cfi->device_type*8, base,
187 map->bankwidth*8); 187 map->bankwidth*8);
188 188
189 return 1; 189 return 1;
190} 190}
191 191
192static int __xipram cfi_chip_setup(struct map_info *map, 192static int __xipram cfi_chip_setup(struct map_info *map,
193 struct cfi_private *cfi) 193 struct cfi_private *cfi)
194{ 194{
195 int ofs_factor = cfi->interleave*cfi->device_type; 195 int ofs_factor = cfi->interleave*cfi->device_type;
@@ -209,11 +209,11 @@ static int __xipram cfi_chip_setup(struct map_info *map,
209 printk(KERN_WARNING "%s: kmalloc failed for CFI ident structure\n", map->name); 209 printk(KERN_WARNING "%s: kmalloc failed for CFI ident structure\n", map->name);
210 return 0; 210 return 0;
211 } 211 }
212 212
213 memset(cfi->cfiq,0,sizeof(struct cfi_ident)); 213 memset(cfi->cfiq,0,sizeof(struct cfi_ident));
214 214
215 cfi->cfi_mode = CFI_MODE_CFI; 215 cfi->cfi_mode = CFI_MODE_CFI;
216 216
217 /* Read the CFI info structure */ 217 /* Read the CFI info structure */
218 xip_disable_qry(base, map, cfi); 218 xip_disable_qry(base, map, cfi);
219 for (i=0; i<(sizeof(struct cfi_ident) + num_erase_regions * 4); i++) 219 for (i=0; i<(sizeof(struct cfi_ident) + num_erase_regions * 4); i++)
@@ -231,7 +231,7 @@ static int __xipram cfi_chip_setup(struct map_info *map,
231 cfi_send_gen_cmd(0x55, 0x2aa, base, map, cfi, cfi->device_type, NULL); 231 cfi_send_gen_cmd(0x55, 0x2aa, base, map, cfi, cfi->device_type, NULL);
232 cfi_send_gen_cmd(0x90, 0x555, base, map, cfi, cfi->device_type, NULL); 232 cfi_send_gen_cmd(0x90, 0x555, base, map, cfi, cfi->device_type, NULL);
233 cfi->mfr = cfi_read_query(map, base); 233 cfi->mfr = cfi_read_query(map, base);
234 cfi->id = cfi_read_query(map, base + ofs_factor); 234 cfi->id = cfi_read_query(map, base + ofs_factor);
235 235
236 /* Put it back into Read Mode */ 236 /* Put it back into Read Mode */
237 cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL); 237 cfi_send_gen_cmd(0xF0, 0, base, map, cfi, cfi->device_type, NULL);
@@ -255,10 +255,10 @@ static int __xipram cfi_chip_setup(struct map_info *map,
255 255
256 for (i=0; i<cfi->cfiq->NumEraseRegions; i++) { 256 for (i=0; i<cfi->cfiq->NumEraseRegions; i++) {
257 cfi->cfiq->EraseRegionInfo[i] = le32_to_cpu(cfi->cfiq->EraseRegionInfo[i]); 257 cfi->cfiq->EraseRegionInfo[i] = le32_to_cpu(cfi->cfiq->EraseRegionInfo[i]);
258 258
259#ifdef DEBUG_CFI 259#ifdef DEBUG_CFI
260 printk(" Erase Region #%d: BlockSize 0x%4.4X bytes, %d blocks\n", 260 printk(" Erase Region #%d: BlockSize 0x%4.4X bytes, %d blocks\n",
261 i, (cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff, 261 i, (cfi->cfiq->EraseRegionInfo[i] >> 8) & ~0xff,
262 (cfi->cfiq->EraseRegionInfo[i] & 0xffff) + 1); 262 (cfi->cfiq->EraseRegionInfo[i] & 0xffff) + 1);
263#endif 263#endif
264 } 264 }
@@ -271,33 +271,33 @@ static int __xipram cfi_chip_setup(struct map_info *map,
271} 271}
272 272
273#ifdef DEBUG_CFI 273#ifdef DEBUG_CFI
274static char *vendorname(__u16 vendor) 274static char *vendorname(__u16 vendor)
275{ 275{
276 switch (vendor) { 276 switch (vendor) {
277 case P_ID_NONE: 277 case P_ID_NONE:
278 return "None"; 278 return "None";
279 279
280 case P_ID_INTEL_EXT: 280 case P_ID_INTEL_EXT:
281 return "Intel/Sharp Extended"; 281 return "Intel/Sharp Extended";
282 282
283 case P_ID_AMD_STD: 283 case P_ID_AMD_STD:
284 return "AMD/Fujitsu Standard"; 284 return "AMD/Fujitsu Standard";
285 285
286 case P_ID_INTEL_STD: 286 case P_ID_INTEL_STD:
287 return "Intel/Sharp Standard"; 287 return "Intel/Sharp Standard";
288 288
289 case P_ID_AMD_EXT: 289 case P_ID_AMD_EXT:
290 return "AMD/Fujitsu Extended"; 290 return "AMD/Fujitsu Extended";
291 291
292 case P_ID_WINBOND: 292 case P_ID_WINBOND:
293 return "Winbond Standard"; 293 return "Winbond Standard";
294 294
295 case P_ID_ST_ADV: 295 case P_ID_ST_ADV:
296 return "ST Advanced"; 296 return "ST Advanced";
297 297
298 case P_ID_MITSUBISHI_STD: 298 case P_ID_MITSUBISHI_STD:
299 return "Mitsubishi Standard"; 299 return "Mitsubishi Standard";
300 300
301 case P_ID_MITSUBISHI_EXT: 301 case P_ID_MITSUBISHI_EXT:
302 return "Mitsubishi Extended"; 302 return "Mitsubishi Extended";
303 303
@@ -306,13 +306,13 @@ static char *vendorname(__u16 vendor)
306 306
307 case P_ID_INTEL_PERFORMANCE: 307 case P_ID_INTEL_PERFORMANCE:
308 return "Intel Performance Code"; 308 return "Intel Performance Code";
309 309
310 case P_ID_INTEL_DATA: 310 case P_ID_INTEL_DATA:
311 return "Intel Data"; 311 return "Intel Data";
312 312
313 case P_ID_RESERVED: 313 case P_ID_RESERVED:
314 return "Not Allowed / Reserved for Future Use"; 314 return "Not Allowed / Reserved for Future Use";
315 315
316 default: 316 default:
317 return "Unknown"; 317 return "Unknown";
318 } 318 }
@@ -325,21 +325,21 @@ static void print_cfi_ident(struct cfi_ident *cfip)
325 if (cfip->qry[0] != 'Q' || cfip->qry[1] != 'R' || cfip->qry[2] != 'Y') { 325 if (cfip->qry[0] != 'Q' || cfip->qry[1] != 'R' || cfip->qry[2] != 'Y') {
326 printk("Invalid CFI ident structure.\n"); 326 printk("Invalid CFI ident structure.\n");
327 return; 327 return;
328 } 328 }
329#endif 329#endif
330 printk("Primary Vendor Command Set: %4.4X (%s)\n", cfip->P_ID, vendorname(cfip->P_ID)); 330 printk("Primary Vendor Command Set: %4.4X (%s)\n", cfip->P_ID, vendorname(cfip->P_ID));
331 if (cfip->P_ADR) 331 if (cfip->P_ADR)
332 printk("Primary Algorithm Table at %4.4X\n", cfip->P_ADR); 332 printk("Primary Algorithm Table at %4.4X\n", cfip->P_ADR);
333 else 333 else
334 printk("No Primary Algorithm Table\n"); 334 printk("No Primary Algorithm Table\n");
335 335
336 printk("Alternative Vendor Command Set: %4.4X (%s)\n", cfip->A_ID, vendorname(cfip->A_ID)); 336 printk("Alternative Vendor Command Set: %4.4X (%s)\n", cfip->A_ID, vendorname(cfip->A_ID));
337 if (cfip->A_ADR) 337 if (cfip->A_ADR)
338 printk("Alternate Algorithm Table at %4.4X\n", cfip->A_ADR); 338 printk("Alternate Algorithm Table at %4.4X\n", cfip->A_ADR);
339 else 339 else
340 printk("No Alternate Algorithm Table\n"); 340 printk("No Alternate Algorithm Table\n");
341 341
342 342
343 printk("Vcc Minimum: %2d.%d V\n", cfip->VccMin >> 4, cfip->VccMin & 0xf); 343 printk("Vcc Minimum: %2d.%d V\n", cfip->VccMin >> 4, cfip->VccMin & 0xf);
344 printk("Vcc Maximum: %2d.%d V\n", cfip->VccMax >> 4, cfip->VccMax & 0xf); 344 printk("Vcc Maximum: %2d.%d V\n", cfip->VccMax >> 4, cfip->VccMax & 0xf);
345 if (cfip->VppMin) { 345 if (cfip->VppMin) {
@@ -348,61 +348,61 @@ static void print_cfi_ident(struct cfi_ident *cfip)
348 } 348 }
349 else 349 else
350 printk("No Vpp line\n"); 350 printk("No Vpp line\n");
351 351
352 printk("Typical byte/word write timeout: %d µs\n", 1<<cfip->WordWriteTimeoutTyp); 352 printk("Typical byte/word write timeout: %d µs\n", 1<<cfip->WordWriteTimeoutTyp);
353 printk("Maximum byte/word write timeout: %d µs\n", (1<<cfip->WordWriteTimeoutMax) * (1<<cfip->WordWriteTimeoutTyp)); 353 printk("Maximum byte/word write timeout: %d µs\n", (1<<cfip->WordWriteTimeoutMax) * (1<<cfip->WordWriteTimeoutTyp));
354 354
355 if (cfip->BufWriteTimeoutTyp || cfip->BufWriteTimeoutMax) { 355 if (cfip->BufWriteTimeoutTyp || cfip->BufWriteTimeoutMax) {
356 printk("Typical full buffer write timeout: %d µs\n", 1<<cfip->BufWriteTimeoutTyp); 356 printk("Typical full buffer write timeout: %d µs\n", 1<<cfip->BufWriteTimeoutTyp);
357 printk("Maximum full buffer write timeout: %d µs\n", (1<<cfip->BufWriteTimeoutMax) * (1<<cfip->BufWriteTimeoutTyp)); 357 printk("Maximum full buffer write timeout: %d µs\n", (1<<cfip->BufWriteTimeoutMax) * (1<<cfip->BufWriteTimeoutTyp));
358 } 358 }
359 else 359 else
360 printk("Full buffer write not supported\n"); 360 printk("Full buffer write not supported\n");
361 361
362 printk("Typical block erase timeout: %d ms\n", 1<<cfip->BlockEraseTimeoutTyp); 362 printk("Typical block erase timeout: %d ms\n", 1<<cfip->BlockEraseTimeoutTyp);
363 printk("Maximum block erase timeout: %d ms\n", (1<<cfip->BlockEraseTimeoutMax) * (1<<cfip->BlockEraseTimeoutTyp)); 363 printk("Maximum block erase timeout: %d ms\n", (1<<cfip->BlockEraseTimeoutMax) * (1<<cfip->BlockEraseTimeoutTyp));
364 if (cfip->ChipEraseTimeoutTyp || cfip->ChipEraseTimeoutMax) { 364 if (cfip->ChipEraseTimeoutTyp || cfip->ChipEraseTimeoutMax) {
365 printk("Typical chip erase timeout: %d ms\n", 1<<cfip->ChipEraseTimeoutTyp); 365 printk("Typical chip erase timeout: %d ms\n", 1<<cfip->ChipEraseTimeoutTyp);
366 printk("Maximum chip erase timeout: %d ms\n", (1<<cfip->ChipEraseTimeoutMax) * (1<<cfip->ChipEraseTimeoutTyp)); 366 printk("Maximum chip erase timeout: %d ms\n", (1<<cfip->ChipEraseTimeoutMax) * (1<<cfip->ChipEraseTimeoutTyp));
367 } 367 }
368 else 368 else
369 printk("Chip erase not supported\n"); 369 printk("Chip erase not supported\n");
370 370
371 printk("Device size: 0x%X bytes (%d MiB)\n", 1 << cfip->DevSize, 1<< (cfip->DevSize - 20)); 371 printk("Device size: 0x%X bytes (%d MiB)\n", 1 << cfip->DevSize, 1<< (cfip->DevSize - 20));
372 printk("Flash Device Interface description: 0x%4.4X\n", cfip->InterfaceDesc); 372 printk("Flash Device Interface description: 0x%4.4X\n", cfip->InterfaceDesc);
373 switch(cfip->InterfaceDesc) { 373 switch(cfip->InterfaceDesc) {
374 case 0: 374 case 0:
375 printk(" - x8-only asynchronous interface\n"); 375 printk(" - x8-only asynchronous interface\n");
376 break; 376 break;
377 377
378 case 1: 378 case 1:
379 printk(" - x16-only asynchronous interface\n"); 379 printk(" - x16-only asynchronous interface\n");
380 break; 380 break;
381 381
382 case 2: 382 case 2:
383 printk(" - supports x8 and x16 via BYTE# with asynchronous interface\n"); 383 printk(" - supports x8 and x16 via BYTE# with asynchronous interface\n");
384 break; 384 break;
385 385
386 case 3: 386 case 3:
387 printk(" - x32-only asynchronous interface\n"); 387 printk(" - x32-only asynchronous interface\n");
388 break; 388 break;
389 389
390 case 4: 390 case 4:
391 printk(" - supports x16 and x32 via Word# with asynchronous interface\n"); 391 printk(" - supports x16 and x32 via Word# with asynchronous interface\n");
392 break; 392 break;
393 393
394 case 65535: 394 case 65535:
395 printk(" - Not Allowed / Reserved\n"); 395 printk(" - Not Allowed / Reserved\n");
396 break; 396 break;
397 397
398 default: 398 default:
399 printk(" - Unknown\n"); 399 printk(" - Unknown\n");
400 break; 400 break;
401 } 401 }
402 402
403 printk("Max. bytes in buffer write: 0x%x\n", 1<< cfip->MaxBufWriteSize); 403 printk("Max. bytes in buffer write: 0x%x\n", 1<< cfip->MaxBufWriteSize);
404 printk("Number of Erase Block Regions: %d\n", cfip->NumEraseRegions); 404 printk("Number of Erase Block Regions: %d\n", cfip->NumEraseRegions);
405 405
406} 406}
407#endif /* DEBUG_CFI */ 407#endif /* DEBUG_CFI */
408 408