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[CPUFREQ] fix BUG on cpufreq policy init failure
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / edac / mpc85xx_edac.c
blobb123bb308a4a8b50c7543179e065bc34ef2a33ff
1 /*
2 * Freescale MPC85xx Memory Controller kenel module
3 *
4 * Author: Dave Jiang <djiang@mvista.com>
5 *
6 * 2006-2007 (c) MontaVista Software, Inc. This file is licensed under
7 * the terms of the GNU General Public License version 2. This program
8 * is licensed "as is" without any warranty of any kind, whether express
9 * or implied.
10 *
11 */
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/interrupt.h>
15 #include <linux/ctype.h>
16 #include <linux/io.h>
17 #include <linux/mod_devicetable.h>
18 #include <linux/edac.h>
19 #include <linux/smp.h>
20 #include <linux/gfp.h>
21
22 #include <linux/of_platform.h>
23 #include <linux/of_device.h>
24 #include "edac_module.h"
25 #include "edac_core.h"
26 #include "mpc85xx_edac.h"
27
28 static int edac_dev_idx;
29 #ifdef CONFIG_PCI
30 static int edac_pci_idx;
31 #endif
32 static int edac_mc_idx;
33
34 static u32 orig_ddr_err_disable;
35 static u32 orig_ddr_err_sbe;
36
37 /*
38 * PCI Err defines
39 */
40 #ifdef CONFIG_PCI
41 static u32 orig_pci_err_cap_dr;
42 static u32 orig_pci_err_en;
43 #endif
44
45 static u32 orig_l2_err_disable;
46 #ifdef CONFIG_FSL_SOC_BOOKE
47 static u32 orig_hid1[2];
48 #endif
49
50 /************************ MC SYSFS parts ***********************************/
51
52 static ssize_t mpc85xx_mc_inject_data_hi_show(struct mem_ctl_info *mci,
53 char *data)
54 {
55 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
56 return sprintf(data, "0x%08x",
57 in_be32(pdata->mc_vbase +
58 MPC85XX_MC_DATA_ERR_INJECT_HI));
59 }
60
61 static ssize_t mpc85xx_mc_inject_data_lo_show(struct mem_ctl_info *mci,
62 char *data)
63 {
64 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
65 return sprintf(data, "0x%08x",
66 in_be32(pdata->mc_vbase +
67 MPC85XX_MC_DATA_ERR_INJECT_LO));
68 }
69
70 static ssize_t mpc85xx_mc_inject_ctrl_show(struct mem_ctl_info *mci, char *data)
71 {
72 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
73 return sprintf(data, "0x%08x",
74 in_be32(pdata->mc_vbase + MPC85XX_MC_ECC_ERR_INJECT));
75 }
76
77 static ssize_t mpc85xx_mc_inject_data_hi_store(struct mem_ctl_info *mci,
78 const char *data, size_t count)
79 {
80 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
81 if (isdigit(*data)) {
82 out_be32(pdata->mc_vbase + MPC85XX_MC_DATA_ERR_INJECT_HI,
83 simple_strtoul(data, NULL, 0));
84 return count;
85 }
86 return 0;
87 }
88
89 static ssize_t mpc85xx_mc_inject_data_lo_store(struct mem_ctl_info *mci,
90 const char *data, size_t count)
91 {
92 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
93 if (isdigit(*data)) {
94 out_be32(pdata->mc_vbase + MPC85XX_MC_DATA_ERR_INJECT_LO,
95 simple_strtoul(data, NULL, 0));
96 return count;
97 }
98 return 0;
99 }
100
101 static ssize_t mpc85xx_mc_inject_ctrl_store(struct mem_ctl_info *mci,
102 const char *data, size_t count)
103 {
104 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
105 if (isdigit(*data)) {
106 out_be32(pdata->mc_vbase + MPC85XX_MC_ECC_ERR_INJECT,
107 simple_strtoul(data, NULL, 0));
108 return count;
109 }
110 return 0;
111 }
112
113 static struct mcidev_sysfs_attribute mpc85xx_mc_sysfs_attributes[] = {
114 {
115 .attr = {
116 .name = "inject_data_hi",
117 .mode = (S_IRUGO | S_IWUSR)
118 },
119 .show = mpc85xx_mc_inject_data_hi_show,
120 .store = mpc85xx_mc_inject_data_hi_store},
121 {
122 .attr = {
123 .name = "inject_data_lo",
124 .mode = (S_IRUGO | S_IWUSR)
125 },
126 .show = mpc85xx_mc_inject_data_lo_show,
127 .store = mpc85xx_mc_inject_data_lo_store},
128 {
129 .attr = {
130 .name = "inject_ctrl",
131 .mode = (S_IRUGO | S_IWUSR)
132 },
133 .show = mpc85xx_mc_inject_ctrl_show,
134 .store = mpc85xx_mc_inject_ctrl_store},
135
136 /* End of list */
137 {
138 .attr = {.name = NULL}
139 }
140 };
141
142 static void mpc85xx_set_mc_sysfs_attributes(struct mem_ctl_info *mci)
143 {
144 mci->mc_driver_sysfs_attributes = mpc85xx_mc_sysfs_attributes;
145 }
146
147 /**************************** PCI Err device ***************************/
148 #ifdef CONFIG_PCI
149
150 static void mpc85xx_pci_check(struct edac_pci_ctl_info *pci)
151 {
152 struct mpc85xx_pci_pdata *pdata = pci->pvt_info;
153 u32 err_detect;
154
155 err_detect = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR);
156
157 /* master aborts can happen during PCI config cycles */
158 if (!(err_detect & ~(PCI_EDE_MULTI_ERR | PCI_EDE_MST_ABRT))) {
159 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, err_detect);
160 return;
161 }
162
163 printk(KERN_ERR "PCI error(s) detected\n");
164 printk(KERN_ERR "PCI/X ERR_DR register: %#08x\n", err_detect);
165
166 printk(KERN_ERR "PCI/X ERR_ATTRIB register: %#08x\n",
167 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ATTRIB));
168 printk(KERN_ERR "PCI/X ERR_ADDR register: %#08x\n",
169 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ADDR));
170 printk(KERN_ERR "PCI/X ERR_EXT_ADDR register: %#08x\n",
171 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EXT_ADDR));
172 printk(KERN_ERR "PCI/X ERR_DL register: %#08x\n",
173 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DL));
174 printk(KERN_ERR "PCI/X ERR_DH register: %#08x\n",
175 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DH));
176
177 /* clear error bits */
178 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, err_detect);
179
180 if (err_detect & PCI_EDE_PERR_MASK)
181 edac_pci_handle_pe(pci, pci->ctl_name);
182
183 if ((err_detect & ~PCI_EDE_MULTI_ERR) & ~PCI_EDE_PERR_MASK)
184 edac_pci_handle_npe(pci, pci->ctl_name);
185 }
186
187 static irqreturn_t mpc85xx_pci_isr(int irq, void *dev_id)
188 {
189 struct edac_pci_ctl_info *pci = dev_id;
190 struct mpc85xx_pci_pdata *pdata = pci->pvt_info;
191 u32 err_detect;
192
193 err_detect = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR);
194
195 if (!err_detect)
196 return IRQ_NONE;
197
198 mpc85xx_pci_check(pci);
199
200 return IRQ_HANDLED;
201 }
202
203 static int __devinit mpc85xx_pci_err_probe(struct platform_device *op,
204 const struct of_device_id *match)
205 {
206 struct edac_pci_ctl_info *pci;
207 struct mpc85xx_pci_pdata *pdata;
208 struct resource r;
209 int res = 0;
210
211 if (!devres_open_group(&op->dev, mpc85xx_pci_err_probe, GFP_KERNEL))
212 return -ENOMEM;
213
214 pci = edac_pci_alloc_ctl_info(sizeof(*pdata), "mpc85xx_pci_err");
215 if (!pci)
216 return -ENOMEM;
217
218 pdata = pci->pvt_info;
219 pdata->name = "mpc85xx_pci_err";
220 pdata->irq = NO_IRQ;
221 dev_set_drvdata(&op->dev, pci);
222 pci->dev = &op->dev;
223 pci->mod_name = EDAC_MOD_STR;
224 pci->ctl_name = pdata->name;
225 pci->dev_name = dev_name(&op->dev);
226
227 if (edac_op_state == EDAC_OPSTATE_POLL)
228 pci->edac_check = mpc85xx_pci_check;
229
230 pdata->edac_idx = edac_pci_idx++;
231
232 res = of_address_to_resource(op->dev.of_node, 0, &r);
233 if (res) {
234 printk(KERN_ERR "%s: Unable to get resource for "
235 "PCI err regs\n", __func__);
236 goto err;
237 }
238
239 /* we only need the error registers */
240 r.start += 0xe00;
241
242 if (!devm_request_mem_region(&op->dev, r.start, resource_size(&r),
243 pdata->name)) {
244 printk(KERN_ERR "%s: Error while requesting mem region\n",
245 __func__);
246 res = -EBUSY;
247 goto err;
248 }
249
250 pdata->pci_vbase = devm_ioremap(&op->dev, r.start, resource_size(&r));
251 if (!pdata->pci_vbase) {
252 printk(KERN_ERR "%s: Unable to setup PCI err regs\n", __func__);
253 res = -ENOMEM;
254 goto err;
255 }
256
257 orig_pci_err_cap_dr =
258 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR);
259
260 /* PCI master abort is expected during config cycles */
261 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR, 0x40);
262
263 orig_pci_err_en = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN);
264
265 /* disable master abort reporting */
266 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, ~0x40);
267
268 /* clear error bits */
269 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, ~0);
270
271 if (edac_pci_add_device(pci, pdata->edac_idx) > 0) {
272 debugf3("%s(): failed edac_pci_add_device()\n", __func__);
273 goto err;
274 }
275
276 if (edac_op_state == EDAC_OPSTATE_INT) {
277 pdata->irq = irq_of_parse_and_map(op->dev.of_node, 0);
278 res = devm_request_irq(&op->dev, pdata->irq,
279 mpc85xx_pci_isr, IRQF_DISABLED,
280 "[EDAC] PCI err", pci);
281 if (res < 0) {
282 printk(KERN_ERR
283 "%s: Unable to requiest irq %d for "
284 "MPC85xx PCI err\n", __func__, pdata->irq);
285 irq_dispose_mapping(pdata->irq);
286 res = -ENODEV;
287 goto err2;
288 }
289
290 printk(KERN_INFO EDAC_MOD_STR " acquired irq %d for PCI Err\n",
291 pdata->irq);
292 }
293
294 devres_remove_group(&op->dev, mpc85xx_pci_err_probe);
295 debugf3("%s(): success\n", __func__);
296 printk(KERN_INFO EDAC_MOD_STR " PCI err registered\n");
297
298 return 0;
299
300 err2:
301 edac_pci_del_device(&op->dev);
302 err:
303 edac_pci_free_ctl_info(pci);
304 devres_release_group(&op->dev, mpc85xx_pci_err_probe);
305 return res;
306 }
307
308 static int mpc85xx_pci_err_remove(struct platform_device *op)
309 {
310 struct edac_pci_ctl_info *pci = dev_get_drvdata(&op->dev);
311 struct mpc85xx_pci_pdata *pdata = pci->pvt_info;
312
313 debugf0("%s()\n", __func__);
314
315 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR,
316 orig_pci_err_cap_dr);
317
318 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, orig_pci_err_en);
319
320 edac_pci_del_device(pci->dev);
321
322 if (edac_op_state == EDAC_OPSTATE_INT)
323 irq_dispose_mapping(pdata->irq);
324
325 edac_pci_free_ctl_info(pci);
326
327 return 0;
328 }
329
330 static struct of_device_id mpc85xx_pci_err_of_match[] = {
331 {
332 .compatible = "fsl,mpc8540-pcix",
333 },
334 {
335 .compatible = "fsl,mpc8540-pci",
336 },
337 {},
338 };
339 MODULE_DEVICE_TABLE(of, mpc85xx_pci_err_of_match);
340
341 static struct of_platform_driver mpc85xx_pci_err_driver = {
342 .probe = mpc85xx_pci_err_probe,
343 .remove = __devexit_p(mpc85xx_pci_err_remove),
344 .driver = {
345 .name = "mpc85xx_pci_err",
346 .owner = THIS_MODULE,
347 .of_match_table = mpc85xx_pci_err_of_match,
348 },
349 };
350
351 #endif /* CONFIG_PCI */
352
353 /**************************** L2 Err device ***************************/
354
355 /************************ L2 SYSFS parts ***********************************/
356
357 static ssize_t mpc85xx_l2_inject_data_hi_show(struct edac_device_ctl_info
358 *edac_dev, char *data)
359 {
360 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
361 return sprintf(data, "0x%08x",
362 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJHI));
363 }
364
365 static ssize_t mpc85xx_l2_inject_data_lo_show(struct edac_device_ctl_info
366 *edac_dev, char *data)
367 {
368 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
369 return sprintf(data, "0x%08x",
370 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJLO));
371 }
372
373 static ssize_t mpc85xx_l2_inject_ctrl_show(struct edac_device_ctl_info
374 *edac_dev, char *data)
375 {
376 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
377 return sprintf(data, "0x%08x",
378 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJCTL));
379 }
380
381 static ssize_t mpc85xx_l2_inject_data_hi_store(struct edac_device_ctl_info
382 *edac_dev, const char *data,
383 size_t count)
384 {
385 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
386 if (isdigit(*data)) {
387 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJHI,
388 simple_strtoul(data, NULL, 0));
389 return count;
390 }
391 return 0;
392 }
393
394 static ssize_t mpc85xx_l2_inject_data_lo_store(struct edac_device_ctl_info
395 *edac_dev, const char *data,
396 size_t count)
397 {
398 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
399 if (isdigit(*data)) {
400 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJLO,
401 simple_strtoul(data, NULL, 0));
402 return count;
403 }
404 return 0;
405 }
406
407 static ssize_t mpc85xx_l2_inject_ctrl_store(struct edac_device_ctl_info
408 *edac_dev, const char *data,
409 size_t count)
410 {
411 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
412 if (isdigit(*data)) {
413 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJCTL,
414 simple_strtoul(data, NULL, 0));
415 return count;
416 }
417 return 0;
418 }
419
420 static struct edac_dev_sysfs_attribute mpc85xx_l2_sysfs_attributes[] = {
421 {
422 .attr = {
423 .name = "inject_data_hi",
424 .mode = (S_IRUGO | S_IWUSR)
425 },
426 .show = mpc85xx_l2_inject_data_hi_show,
427 .store = mpc85xx_l2_inject_data_hi_store},
428 {
429 .attr = {
430 .name = "inject_data_lo",
431 .mode = (S_IRUGO | S_IWUSR)
432 },
433 .show = mpc85xx_l2_inject_data_lo_show,
434 .store = mpc85xx_l2_inject_data_lo_store},
435 {
436 .attr = {
437 .name = "inject_ctrl",
438 .mode = (S_IRUGO | S_IWUSR)
439 },
440 .show = mpc85xx_l2_inject_ctrl_show,
441 .store = mpc85xx_l2_inject_ctrl_store},
442
443 /* End of list */
444 {
445 .attr = {.name = NULL}
446 }
447 };
448
449 static void mpc85xx_set_l2_sysfs_attributes(struct edac_device_ctl_info
450 *edac_dev)
451 {
452 edac_dev->sysfs_attributes = mpc85xx_l2_sysfs_attributes;
453 }
454
455 /***************************** L2 ops ***********************************/
456
457 static void mpc85xx_l2_check(struct edac_device_ctl_info *edac_dev)
458 {
459 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
460 u32 err_detect;
461
462 err_detect = in_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET);
463
464 if (!(err_detect & L2_EDE_MASK))
465 return;
466
467 printk(KERN_ERR "ECC Error in CPU L2 cache\n");
468 printk(KERN_ERR "L2 Error Detect Register: 0x%08x\n", err_detect);
469 printk(KERN_ERR "L2 Error Capture Data High Register: 0x%08x\n",
470 in_be32(pdata->l2_vbase + MPC85XX_L2_CAPTDATAHI));
471 printk(KERN_ERR "L2 Error Capture Data Lo Register: 0x%08x\n",
472 in_be32(pdata->l2_vbase + MPC85XX_L2_CAPTDATALO));
473 printk(KERN_ERR "L2 Error Syndrome Register: 0x%08x\n",
474 in_be32(pdata->l2_vbase + MPC85XX_L2_CAPTECC));
475 printk(KERN_ERR "L2 Error Attributes Capture Register: 0x%08x\n",
476 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRATTR));
477 printk(KERN_ERR "L2 Error Address Capture Register: 0x%08x\n",
478 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRADDR));
479
480 /* clear error detect register */
481 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET, err_detect);
482
483 if (err_detect & L2_EDE_CE_MASK)
484 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
485
486 if (err_detect & L2_EDE_UE_MASK)
487 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
488 }
489
490 static irqreturn_t mpc85xx_l2_isr(int irq, void *dev_id)
491 {
492 struct edac_device_ctl_info *edac_dev = dev_id;
493 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
494 u32 err_detect;
495
496 err_detect = in_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET);
497
498 if (!(err_detect & L2_EDE_MASK))
499 return IRQ_NONE;
500
501 mpc85xx_l2_check(edac_dev);
502
503 return IRQ_HANDLED;
504 }
505
506 static int __devinit mpc85xx_l2_err_probe(struct platform_device *op,
507 const struct of_device_id *match)
508 {
509 struct edac_device_ctl_info *edac_dev;
510 struct mpc85xx_l2_pdata *pdata;
511 struct resource r;
512 int res;
513
514 if (!devres_open_group(&op->dev, mpc85xx_l2_err_probe, GFP_KERNEL))
515 return -ENOMEM;
516
517 edac_dev = edac_device_alloc_ctl_info(sizeof(*pdata),
518 "cpu", 1, "L", 1, 2, NULL, 0,
519 edac_dev_idx);
520 if (!edac_dev) {
521 devres_release_group(&op->dev, mpc85xx_l2_err_probe);
522 return -ENOMEM;
523 }
524
525 pdata = edac_dev->pvt_info;
526 pdata->name = "mpc85xx_l2_err";
527 pdata->irq = NO_IRQ;
528 edac_dev->dev = &op->dev;
529 dev_set_drvdata(edac_dev->dev, edac_dev);
530 edac_dev->ctl_name = pdata->name;
531 edac_dev->dev_name = pdata->name;
532
533 res = of_address_to_resource(op->dev.of_node, 0, &r);
534 if (res) {
535 printk(KERN_ERR "%s: Unable to get resource for "
536 "L2 err regs\n", __func__);
537 goto err;
538 }
539
540 /* we only need the error registers */
541 r.start += 0xe00;
542
543 if (!devm_request_mem_region(&op->dev, r.start,
544 r.end - r.start + 1, pdata->name)) {
545 printk(KERN_ERR "%s: Error while requesting mem region\n",
546 __func__);
547 res = -EBUSY;
548 goto err;
549 }
550
551 pdata->l2_vbase = devm_ioremap(&op->dev, r.start, r.end - r.start + 1);
552 if (!pdata->l2_vbase) {
553 printk(KERN_ERR "%s: Unable to setup L2 err regs\n", __func__);
554 res = -ENOMEM;
555 goto err;
556 }
557
558 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET, ~0);
559
560 orig_l2_err_disable = in_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS);
561
562 /* clear the err_dis */
563 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS, 0);
564
565 edac_dev->mod_name = EDAC_MOD_STR;
566
567 if (edac_op_state == EDAC_OPSTATE_POLL)
568 edac_dev->edac_check = mpc85xx_l2_check;
569
570 mpc85xx_set_l2_sysfs_attributes(edac_dev);
571
572 pdata->edac_idx = edac_dev_idx++;
573
574 if (edac_device_add_device(edac_dev) > 0) {
575 debugf3("%s(): failed edac_device_add_device()\n", __func__);
576 goto err;
577 }
578
579 if (edac_op_state == EDAC_OPSTATE_INT) {
580 pdata->irq = irq_of_parse_and_map(op->dev.of_node, 0);
581 res = devm_request_irq(&op->dev, pdata->irq,
582 mpc85xx_l2_isr, IRQF_DISABLED,
583 "[EDAC] L2 err", edac_dev);
584 if (res < 0) {
585 printk(KERN_ERR
586 "%s: Unable to requiest irq %d for "
587 "MPC85xx L2 err\n", __func__, pdata->irq);
588 irq_dispose_mapping(pdata->irq);
589 res = -ENODEV;
590 goto err2;
591 }
592
593 printk(KERN_INFO EDAC_MOD_STR " acquired irq %d for L2 Err\n",
594 pdata->irq);
595
596 edac_dev->op_state = OP_RUNNING_INTERRUPT;
597
598 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINTEN, L2_EIE_MASK);
599 }
600
601 devres_remove_group(&op->dev, mpc85xx_l2_err_probe);
602
603 debugf3("%s(): success\n", __func__);
604 printk(KERN_INFO EDAC_MOD_STR " L2 err registered\n");
605
606 return 0;
607
608 err2:
609 edac_device_del_device(&op->dev);
610 err:
611 devres_release_group(&op->dev, mpc85xx_l2_err_probe);
612 edac_device_free_ctl_info(edac_dev);
613 return res;
614 }
615
616 static int mpc85xx_l2_err_remove(struct platform_device *op)
617 {
618 struct edac_device_ctl_info *edac_dev = dev_get_drvdata(&op->dev);
619 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
620
621 debugf0("%s()\n", __func__);
622
623 if (edac_op_state == EDAC_OPSTATE_INT) {
624 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINTEN, 0);
625 irq_dispose_mapping(pdata->irq);
626 }
627
628 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS, orig_l2_err_disable);
629 edac_device_del_device(&op->dev);
630 edac_device_free_ctl_info(edac_dev);
631 return 0;
632 }
633
634 static struct of_device_id mpc85xx_l2_err_of_match[] = {
635 /* deprecate the fsl,85.. forms in the future, 2.6.30? */
636 { .compatible = "fsl,8540-l2-cache-controller", },
637 { .compatible = "fsl,8541-l2-cache-controller", },
638 { .compatible = "fsl,8544-l2-cache-controller", },
639 { .compatible = "fsl,8548-l2-cache-controller", },
640 { .compatible = "fsl,8555-l2-cache-controller", },
641 { .compatible = "fsl,8568-l2-cache-controller", },
642 { .compatible = "fsl,mpc8536-l2-cache-controller", },
643 { .compatible = "fsl,mpc8540-l2-cache-controller", },
644 { .compatible = "fsl,mpc8541-l2-cache-controller", },
645 { .compatible = "fsl,mpc8544-l2-cache-controller", },
646 { .compatible = "fsl,mpc8548-l2-cache-controller", },
647 { .compatible = "fsl,mpc8555-l2-cache-controller", },
648 { .compatible = "fsl,mpc8560-l2-cache-controller", },
649 { .compatible = "fsl,mpc8568-l2-cache-controller", },
650 { .compatible = "fsl,mpc8569-l2-cache-controller", },
651 { .compatible = "fsl,mpc8572-l2-cache-controller", },
652 { .compatible = "fsl,p1020-l2-cache-controller", },
653 { .compatible = "fsl,p1021-l2-cache-controller", },
654 { .compatible = "fsl,p2020-l2-cache-controller", },
655 {},
656 };
657 MODULE_DEVICE_TABLE(of, mpc85xx_l2_err_of_match);
658
659 static struct of_platform_driver mpc85xx_l2_err_driver = {
660 .probe = mpc85xx_l2_err_probe,
661 .remove = mpc85xx_l2_err_remove,
662 .driver = {
663 .name = "mpc85xx_l2_err",
664 .owner = THIS_MODULE,
665 .of_match_table = mpc85xx_l2_err_of_match,
666 },
667 };
668
669 /**************************** MC Err device ***************************/
670
671 /*
672 * Taken from table 8-55 in the MPC8641 User's Manual and/or 9-61 in the
673 * MPC8572 User's Manual. Each line represents a syndrome bit column as a
674 * 64-bit value, but split into an upper and lower 32-bit chunk. The labels
675 * below correspond to Freescale's manuals.
676 */
677 static unsigned int ecc_table[16] = {
678 /* MSB LSB */
679 /* [0:31] [32:63] */
680 0xf00fe11e, 0xc33c0ff7, /* Syndrome bit 7 */
681 0x00ff00ff, 0x00fff0ff,
682 0x0f0f0f0f, 0x0f0fff00,
683 0x11113333, 0x7777000f,
684 0x22224444, 0x8888222f,
685 0x44448888, 0xffff4441,
686 0x8888ffff, 0x11118882,
687 0xffff1111, 0x22221114, /* Syndrome bit 0 */
688 };
689
690 /*
691 * Calculate the correct ECC value for a 64-bit value specified by high:low
692 */
693 static u8 calculate_ecc(u32 high, u32 low)
694 {
695 u32 mask_low;
696 u32 mask_high;
697 int bit_cnt;
698 u8 ecc = 0;
699 int i;
700 int j;
701
702 for (i = 0; i < 8; i++) {
703 mask_high = ecc_table[i * 2];
704 mask_low = ecc_table[i * 2 + 1];
705 bit_cnt = 0;
706
707 for (j = 0; j < 32; j++) {
708 if ((mask_high >> j) & 1)
709 bit_cnt ^= (high >> j) & 1;
710 if ((mask_low >> j) & 1)
711 bit_cnt ^= (low >> j) & 1;
712 }
713
714 ecc |= bit_cnt << i;
715 }
716
717 return ecc;
718 }
719
720 /*
721 * Create the syndrome code which is generated if the data line specified by
722 * 'bit' failed. Eg generate an 8-bit codes seen in Table 8-55 in the MPC8641
723 * User's Manual and 9-61 in the MPC8572 User's Manual.
724 */
725 static u8 syndrome_from_bit(unsigned int bit) {
726 int i;
727 u8 syndrome = 0;
728
729 /*
730 * Cycle through the upper or lower 32-bit portion of each value in
731 * ecc_table depending on if 'bit' is in the upper or lower half of
732 * 64-bit data.
733 */
734 for (i = bit < 32; i < 16; i += 2)
735 syndrome |= ((ecc_table[i] >> (bit % 32)) & 1) << (i / 2);
736
737 return syndrome;
738 }
739
740 /*
741 * Decode data and ecc syndrome to determine what went wrong
742 * Note: This can only decode single-bit errors
743 */
744 static void sbe_ecc_decode(u32 cap_high, u32 cap_low, u32 cap_ecc,
745 int *bad_data_bit, int *bad_ecc_bit)
746 {
747 int i;
748 u8 syndrome;
749
750 *bad_data_bit = -1;
751 *bad_ecc_bit = -1;
752
753 /*
754 * Calculate the ECC of the captured data and XOR it with the captured
755 * ECC to find an ECC syndrome value we can search for
756 */
757 syndrome = calculate_ecc(cap_high, cap_low) ^ cap_ecc;
758
759 /* Check if a data line is stuck... */
760 for (i = 0; i < 64; i++) {
761 if (syndrome == syndrome_from_bit(i)) {
762 *bad_data_bit = i;
763 return;
764 }
765 }
766
767 /* If data is correct, check ECC bits for errors... */
768 for (i = 0; i < 8; i++) {
769 if ((syndrome >> i) & 0x1) {
770 *bad_ecc_bit = i;
771 return;
772 }
773 }
774 }
775
776 static void mpc85xx_mc_check(struct mem_ctl_info *mci)
777 {
778 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
779 struct csrow_info *csrow;
780 u32 bus_width;
781 u32 err_detect;
782 u32 syndrome;
783 u32 err_addr;
784 u32 pfn;
785 int row_index;
786 u32 cap_high;
787 u32 cap_low;
788 int bad_data_bit;
789 int bad_ecc_bit;
790
791 err_detect = in_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT);
792 if (!err_detect)
793 return;
794
795 mpc85xx_mc_printk(mci, KERN_ERR, "Err Detect Register: %#8.8x\n",
796 err_detect);
797
798 /* no more processing if not ECC bit errors */
799 if (!(err_detect & (DDR_EDE_SBE | DDR_EDE_MBE))) {
800 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT, err_detect);
801 return;
802 }
803
804 syndrome = in_be32(pdata->mc_vbase + MPC85XX_MC_CAPTURE_ECC);
805
806 /* Mask off appropriate bits of syndrome based on bus width */
807 bus_width = (in_be32(pdata->mc_vbase + MPC85XX_MC_DDR_SDRAM_CFG) &
808 DSC_DBW_MASK) ? 32 : 64;
809 if (bus_width == 64)
810 syndrome &= 0xff;
811 else
812 syndrome &= 0xffff;
813
814 err_addr = in_be32(pdata->mc_vbase + MPC85XX_MC_CAPTURE_ADDRESS);
815 pfn = err_addr >> PAGE_SHIFT;
816
817 for (row_index = 0; row_index < mci->nr_csrows; row_index++) {
818 csrow = &mci->csrows[row_index];
819 if ((pfn >= csrow->first_page) && (pfn <= csrow->last_page))
820 break;
821 }
822
823 cap_high = in_be32(pdata->mc_vbase + MPC85XX_MC_CAPTURE_DATA_HI);
824 cap_low = in_be32(pdata->mc_vbase + MPC85XX_MC_CAPTURE_DATA_LO);
825
826 /*
827 * Analyze single-bit errors on 64-bit wide buses
828 * TODO: Add support for 32-bit wide buses
829 */
830 if ((err_detect & DDR_EDE_SBE) && (bus_width == 64)) {
831 sbe_ecc_decode(cap_high, cap_low, syndrome,
832 &bad_data_bit, &bad_ecc_bit);
833
834 if (bad_data_bit != -1)
835 mpc85xx_mc_printk(mci, KERN_ERR,
836 "Faulty Data bit: %d\n", bad_data_bit);
837 if (bad_ecc_bit != -1)
838 mpc85xx_mc_printk(mci, KERN_ERR,
839 "Faulty ECC bit: %d\n", bad_ecc_bit);
840
841 mpc85xx_mc_printk(mci, KERN_ERR,
842 "Expected Data / ECC:\t%#8.8x_%08x / %#2.2x\n",
843 cap_high ^ (1 << (bad_data_bit - 32)),
844 cap_low ^ (1 << bad_data_bit),
845 syndrome ^ (1 << bad_ecc_bit));
846 }
847
848 mpc85xx_mc_printk(mci, KERN_ERR,
849 "Captured Data / ECC:\t%#8.8x_%08x / %#2.2x\n",
850 cap_high, cap_low, syndrome);
851 mpc85xx_mc_printk(mci, KERN_ERR, "Err addr: %#8.8x\n", err_addr);
852 mpc85xx_mc_printk(mci, KERN_ERR, "PFN: %#8.8x\n", pfn);
853
854 /* we are out of range */
855 if (row_index == mci->nr_csrows)
856 mpc85xx_mc_printk(mci, KERN_ERR, "PFN out of range!\n");
857
858 if (err_detect & DDR_EDE_SBE)
859 edac_mc_handle_ce(mci, pfn, err_addr & PAGE_MASK,
860 syndrome, row_index, 0, mci->ctl_name);
861
862 if (err_detect & DDR_EDE_MBE)
863 edac_mc_handle_ue(mci, pfn, err_addr & PAGE_MASK,
864 row_index, mci->ctl_name);
865
866 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT, err_detect);
867 }
868
869 static irqreturn_t mpc85xx_mc_isr(int irq, void *dev_id)
870 {
871 struct mem_ctl_info *mci = dev_id;
872 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
873 u32 err_detect;
874
875 err_detect = in_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT);
876 if (!err_detect)
877 return IRQ_NONE;
878
879 mpc85xx_mc_check(mci);
880
881 return IRQ_HANDLED;
882 }
883
884 static void __devinit mpc85xx_init_csrows(struct mem_ctl_info *mci)
885 {
886 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
887 struct csrow_info *csrow;
888 u32 sdram_ctl;
889 u32 sdtype;
890 enum mem_type mtype;
891 u32 cs_bnds;
892 int index;
893
894 sdram_ctl = in_be32(pdata->mc_vbase + MPC85XX_MC_DDR_SDRAM_CFG);
895
896 sdtype = sdram_ctl & DSC_SDTYPE_MASK;
897 if (sdram_ctl & DSC_RD_EN) {
898 switch (sdtype) {
899 case DSC_SDTYPE_DDR:
900 mtype = MEM_RDDR;
901 break;
902 case DSC_SDTYPE_DDR2:
903 mtype = MEM_RDDR2;
904 break;
905 case DSC_SDTYPE_DDR3:
906 mtype = MEM_RDDR3;
907 break;
908 default:
909 mtype = MEM_UNKNOWN;
910 break;
911 }
912 } else {
913 switch (sdtype) {
914 case DSC_SDTYPE_DDR:
915 mtype = MEM_DDR;
916 break;
917 case DSC_SDTYPE_DDR2:
918 mtype = MEM_DDR2;
919 break;
920 case DSC_SDTYPE_DDR3:
921 mtype = MEM_DDR3;
922 break;
923 default:
924 mtype = MEM_UNKNOWN;
925 break;
926 }
927 }
928
929 for (index = 0; index < mci->nr_csrows; index++) {
930 u32 start;
931 u32 end;
932
933 csrow = &mci->csrows[index];
934 cs_bnds = in_be32(pdata->mc_vbase + MPC85XX_MC_CS_BNDS_0 +
935 (index * MPC85XX_MC_CS_BNDS_OFS));
936
937 start = (cs_bnds & 0xffff0000) >> 16;
938 end = (cs_bnds & 0x0000ffff);
939
940 if (start == end)
941 continue; /* not populated */
942
943 start <<= (24 - PAGE_SHIFT);
944 end <<= (24 - PAGE_SHIFT);
945 end |= (1 << (24 - PAGE_SHIFT)) - 1;
946
947 csrow->first_page = start;
948 csrow->last_page = end;
949 csrow->nr_pages = end + 1 - start;
950 csrow->grain = 8;
951 csrow->mtype = mtype;
952 csrow->dtype = DEV_UNKNOWN;
953 if (sdram_ctl & DSC_X32_EN)
954 csrow->dtype = DEV_X32;
955 csrow->edac_mode = EDAC_SECDED;
956 }
957 }
958
959 static int __devinit mpc85xx_mc_err_probe(struct platform_device *op,
960 const struct of_device_id *match)
961 {
962 struct mem_ctl_info *mci;
963 struct mpc85xx_mc_pdata *pdata;
964 struct resource r;
965 u32 sdram_ctl;
966 int res;
967
968 if (!devres_open_group(&op->dev, mpc85xx_mc_err_probe, GFP_KERNEL))
969 return -ENOMEM;
970
971 mci = edac_mc_alloc(sizeof(*pdata), 4, 1, edac_mc_idx);
972 if (!mci) {
973 devres_release_group(&op->dev, mpc85xx_mc_err_probe);
974 return -ENOMEM;
975 }
976
977 pdata = mci->pvt_info;
978 pdata->name = "mpc85xx_mc_err";
979 pdata->irq = NO_IRQ;
980 mci->dev = &op->dev;
981 pdata->edac_idx = edac_mc_idx++;
982 dev_set_drvdata(mci->dev, mci);
983 mci->ctl_name = pdata->name;
984 mci->dev_name = pdata->name;
985
986 res = of_address_to_resource(op->dev.of_node, 0, &r);
987 if (res) {
988 printk(KERN_ERR "%s: Unable to get resource for MC err regs\n",
989 __func__);
990 goto err;
991 }
992
993 if (!devm_request_mem_region(&op->dev, r.start,
994 r.end - r.start + 1, pdata->name)) {
995 printk(KERN_ERR "%s: Error while requesting mem region\n",
996 __func__);
997 res = -EBUSY;
998 goto err;
999 }
1000
1001 pdata->mc_vbase = devm_ioremap(&op->dev, r.start, r.end - r.start + 1);
1002 if (!pdata->mc_vbase) {
1003 printk(KERN_ERR "%s: Unable to setup MC err regs\n", __func__);
1004 res = -ENOMEM;
1005 goto err;
1006 }
1007
1008 sdram_ctl = in_be32(pdata->mc_vbase + MPC85XX_MC_DDR_SDRAM_CFG);
1009 if (!(sdram_ctl & DSC_ECC_EN)) {
1010 /* no ECC */
1011 printk(KERN_WARNING "%s: No ECC DIMMs discovered\n", __func__);
1012 res = -ENODEV;
1013 goto err;
1014 }
1015
1016 debugf3("%s(): init mci\n", __func__);
1017 mci->mtype_cap = MEM_FLAG_RDDR | MEM_FLAG_RDDR2 |
1018 MEM_FLAG_DDR | MEM_FLAG_DDR2;
1019 mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
1020 mci->edac_cap = EDAC_FLAG_SECDED;
1021 mci->mod_name = EDAC_MOD_STR;
1022 mci->mod_ver = MPC85XX_REVISION;
1023
1024 if (edac_op_state == EDAC_OPSTATE_POLL)
1025 mci->edac_check = mpc85xx_mc_check;
1026
1027 mci->ctl_page_to_phys = NULL;
1028
1029 mci->scrub_mode = SCRUB_SW_SRC;
1030
1031 mpc85xx_set_mc_sysfs_attributes(mci);
1032
1033 mpc85xx_init_csrows(mci);
1034
1035 /* store the original error disable bits */
1036 orig_ddr_err_disable =
1037 in_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DISABLE);
1038 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DISABLE, 0);
1039
1040 /* clear all error bits */
1041 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT, ~0);
1042
1043 if (edac_mc_add_mc(mci)) {
1044 debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
1045 goto err;
1046 }
1047
1048 if (edac_op_state == EDAC_OPSTATE_INT) {
1049 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_INT_EN,
1050 DDR_EIE_MBEE | DDR_EIE_SBEE);
1051
1052 /* store the original error management threshold */
1053 orig_ddr_err_sbe = in_be32(pdata->mc_vbase +
1054 MPC85XX_MC_ERR_SBE) & 0xff0000;
1055
1056 /* set threshold to 1 error per interrupt */
1057 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_SBE, 0x10000);
1058
1059 /* register interrupts */
1060 pdata->irq = irq_of_parse_and_map(op->dev.of_node, 0);
1061 res = devm_request_irq(&op->dev, pdata->irq,
1062 mpc85xx_mc_isr,
1063 IRQF_DISABLED | IRQF_SHARED,
1064 "[EDAC] MC err", mci);
1065 if (res < 0) {
1066 printk(KERN_ERR "%s: Unable to request irq %d for "
1067 "MPC85xx DRAM ERR\n", __func__, pdata->irq);
1068 irq_dispose_mapping(pdata->irq);
1069 res = -ENODEV;
1070 goto err2;
1071 }
1072
1073 printk(KERN_INFO EDAC_MOD_STR " acquired irq %d for MC\n",
1074 pdata->irq);
1075 }
1076
1077 devres_remove_group(&op->dev, mpc85xx_mc_err_probe);
1078 debugf3("%s(): success\n", __func__);
1079 printk(KERN_INFO EDAC_MOD_STR " MC err registered\n");
1080
1081 return 0;
1082
1083 err2:
1084 edac_mc_del_mc(&op->dev);
1085 err:
1086 devres_release_group(&op->dev, mpc85xx_mc_err_probe);
1087 edac_mc_free(mci);
1088 return res;
1089 }
1090
1091 static int mpc85xx_mc_err_remove(struct platform_device *op)
1092 {
1093 struct mem_ctl_info *mci = dev_get_drvdata(&op->dev);
1094 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
1095
1096 debugf0("%s()\n", __func__);
1097
1098 if (edac_op_state == EDAC_OPSTATE_INT) {
1099 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_INT_EN, 0);
1100 irq_dispose_mapping(pdata->irq);
1101 }
1102
1103 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DISABLE,
1104 orig_ddr_err_disable);
1105 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_SBE, orig_ddr_err_sbe);
1106
1107 edac_mc_del_mc(&op->dev);
1108 edac_mc_free(mci);
1109 return 0;
1110 }
1111
1112 static struct of_device_id mpc85xx_mc_err_of_match[] = {
1113 /* deprecate the fsl,85.. forms in the future, 2.6.30? */
1114 { .compatible = "fsl,8540-memory-controller", },
1115 { .compatible = "fsl,8541-memory-controller", },
1116 { .compatible = "fsl,8544-memory-controller", },
1117 { .compatible = "fsl,8548-memory-controller", },
1118 { .compatible = "fsl,8555-memory-controller", },
1119 { .compatible = "fsl,8568-memory-controller", },
1120 { .compatible = "fsl,mpc8536-memory-controller", },
1121 { .compatible = "fsl,mpc8540-memory-controller", },
1122 { .compatible = "fsl,mpc8541-memory-controller", },
1123 { .compatible = "fsl,mpc8544-memory-controller", },
1124 { .compatible = "fsl,mpc8548-memory-controller", },
1125 { .compatible = "fsl,mpc8555-memory-controller", },
1126 { .compatible = "fsl,mpc8560-memory-controller", },
1127 { .compatible = "fsl,mpc8568-memory-controller", },
1128 { .compatible = "fsl,mpc8569-memory-controller", },
1129 { .compatible = "fsl,mpc8572-memory-controller", },
1130 { .compatible = "fsl,mpc8349-memory-controller", },
1131 { .compatible = "fsl,p1020-memory-controller", },
1132 { .compatible = "fsl,p1021-memory-controller", },
1133 { .compatible = "fsl,p2020-memory-controller", },
1134 { .compatible = "fsl,p4080-memory-controller", },
1135 {},
1136 };
1137 MODULE_DEVICE_TABLE(of, mpc85xx_mc_err_of_match);
1138
1139 static struct of_platform_driver mpc85xx_mc_err_driver = {
1140 .probe = mpc85xx_mc_err_probe,
1141 .remove = mpc85xx_mc_err_remove,
1142 .driver = {
1143 .name = "mpc85xx_mc_err",
1144 .owner = THIS_MODULE,
1145 .of_match_table = mpc85xx_mc_err_of_match,
1146 },
1147 };
1148
1149 #ifdef CONFIG_FSL_SOC_BOOKE
1150 static void __init mpc85xx_mc_clear_rfxe(void *data)
1151 {
1152 orig_hid1[smp_processor_id()] = mfspr(SPRN_HID1);
1153 mtspr(SPRN_HID1, (orig_hid1[smp_processor_id()] & ~0x20000));
1154 }
1155 #endif
1156
1157 static int __init mpc85xx_mc_init(void)
1158 {
1159 int res = 0;
1160
1161 printk(KERN_INFO "Freescale(R) MPC85xx EDAC driver, "
1162 "(C) 2006 Montavista Software\n");
1163
1164 /* make sure error reporting method is sane */
1165 switch (edac_op_state) {
1166 case EDAC_OPSTATE_POLL:
1167 case EDAC_OPSTATE_INT:
1168 break;
1169 default:
1170 edac_op_state = EDAC_OPSTATE_INT;
1171 break;
1172 }
1173
1174 res = of_register_platform_driver(&mpc85xx_mc_err_driver);
1175 if (res)
1176 printk(KERN_WARNING EDAC_MOD_STR "MC fails to register\n");
1177
1178 res = of_register_platform_driver(&mpc85xx_l2_err_driver);
1179 if (res)
1180 printk(KERN_WARNING EDAC_MOD_STR "L2 fails to register\n");
1181
1182 #ifdef CONFIG_PCI
1183 res = of_register_platform_driver(&mpc85xx_pci_err_driver);
1184 if (res)
1185 printk(KERN_WARNING EDAC_MOD_STR "PCI fails to register\n");
1186 #endif
1187
1188 #ifdef CONFIG_FSL_SOC_BOOKE
1189 /*
1190 * need to clear HID1[RFXE] to disable machine check int
1191 * so we can catch it
1192 */
1193 if (edac_op_state == EDAC_OPSTATE_INT)
1194 on_each_cpu(mpc85xx_mc_clear_rfxe, NULL, 0);
1195 #endif
1196
1197 return 0;
1198 }
1199
1200 module_init(mpc85xx_mc_init);
1201
1202 #ifdef CONFIG_FSL_SOC_BOOKE
1203 static void __exit mpc85xx_mc_restore_hid1(void *data)
1204 {
1205 mtspr(SPRN_HID1, orig_hid1[smp_processor_id()]);
1206 }
1207 #endif
1208
1209 static void __exit mpc85xx_mc_exit(void)
1210 {
1211 #ifdef CONFIG_FSL_SOC_BOOKE
1212 on_each_cpu(mpc85xx_mc_restore_hid1, NULL, 0);
1213 #endif
1214 #ifdef CONFIG_PCI
1215 of_unregister_platform_driver(&mpc85xx_pci_err_driver);
1216 #endif
1217 of_unregister_platform_driver(&mpc85xx_l2_err_driver);
1218 of_unregister_platform_driver(&mpc85xx_mc_err_driver);
1219 }
1220
1221 module_exit(mpc85xx_mc_exit);
1222
1223 MODULE_LICENSE("GPL");
1224 MODULE_AUTHOR("Montavista Software, Inc.");
1225 module_param(edac_op_state, int, 0444);
1226 MODULE_PARM_DESC(edac_op_state,
1227 "EDAC Error Reporting state: 0=Poll, 2=Interrupt");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree