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Merge branch 'qgroup' of git://git.jan-o-sch.net/btrfs-unstable into for-linus
[deliverable/linux.git] / drivers / edac / mpc85xx_edac.c
CommitLineData
a9a753d5
DJ		 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>
a9a753d5
DJ		 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>
60be7551 19#include <linux/smp.h>
5a0e3ad6 20#include <linux/gfp.h>
a9a753d5
DJ		 21
22#include <linux/of_platform.h>
23#include <linux/of_device.h>
a9a753d5
DJ		 24#include "edac_module.h"
25#include "edac_core.h"
26#include "mpc85xx_edac.h"
27
28static int edac_dev_idx;
0616fb00 29#ifdef CONFIG_PCI
a9a753d5 30static int edac_pci_idx;
0616fb00 31#endif
a9a753d5
DJ		 32static int edac_mc_idx;
33
34static u32 orig_ddr_err_disable;
35static u32 orig_ddr_err_sbe;
36
37/*
38 * PCI Err defines
39 */
40#ifdef CONFIG_PCI
41static u32 orig_pci_err_cap_dr;
42static u32 orig_pci_err_en;
43#endif
44
45static u32 orig_l2_err_disable;
bd1688dc 46#ifdef CONFIG_FSL_SOC_BOOKE
60be7551 47static u32 orig_hid1[2];
b4846251 48#endif
a9a753d5 49
a9a753d5
DJ		 50/************************ MC SYSFS parts ***********************************/
51
52static 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
61static 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
70static 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
77static 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
89static 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
101static 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
113static 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
142static 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
150static 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
187static 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
00006124 203static int __devinit mpc85xx_pci_err_probe(struct platform_device *op)
a9a753d5
DJ		 204{
205 struct edac_pci_ctl_info *pci;
206 struct mpc85xx_pci_pdata *pdata;
f87bd330 207 struct resource r;
a9a753d5
DJ		 208 int res = 0;
209
f87bd330 210 if (!devres_open_group(&op->dev, mpc85xx_pci_err_probe, GFP_KERNEL))
a9a753d5
DJ		 211 return -ENOMEM;
212
213 pci = edac_pci_alloc_ctl_info(sizeof(*pdata), "mpc85xx_pci_err");
214 if (!pci)
215 return -ENOMEM;
216
217 pdata = pci->pvt_info;
218 pdata->name = "mpc85xx_pci_err";
219 pdata->irq = NO_IRQ;
f87bd330
DJ		 220 dev_set_drvdata(&op->dev, pci);
221 pci->dev = &op->dev;
a9a753d5
DJ		 222 pci->mod_name = EDAC_MOD_STR;
223 pci->ctl_name = pdata->name;
031d5518 224 pci->dev_name = dev_name(&op->dev);
a9a753d5
DJ		 225
226 if (edac_op_state == EDAC_OPSTATE_POLL)
227 pci->edac_check = mpc85xx_pci_check;
228
229 pdata->edac_idx = edac_pci_idx++;
230
a26f95fe 231 res = of_address_to_resource(op->dev.of_node, 0, &r);
f87bd330 232 if (res) {
a9a753d5
DJ		 233 printk(KERN_ERR "%s: Unable to get resource for "
234 "PCI err regs\n", __func__);
235 goto err;
236 }
237
f87bd330
DJ		 238 /* we only need the error registers */
239 r.start += 0xe00;
240
66ed3f75
HS		 241 if (!devm_request_mem_region(&op->dev, r.start, resource_size(&r),
242 pdata->name)) {
a9a753d5
DJ		 243 printk(KERN_ERR "%s: Error while requesting mem region\n",
244 __func__);
245 res = -EBUSY;
246 goto err;
247 }
248
66ed3f75 249 pdata->pci_vbase = devm_ioremap(&op->dev, r.start, resource_size(&r));
a9a753d5
DJ		 250 if (!pdata->pci_vbase) {
251 printk(KERN_ERR "%s: Unable to setup PCI err regs\n", __func__);
252 res = -ENOMEM;
253 goto err;
254 }
255
256 orig_pci_err_cap_dr =
257 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR);
258
259 /* PCI master abort is expected during config cycles */
260 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR, 0x40);
261
262 orig_pci_err_en = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN);
263
264 /* disable master abort reporting */
265 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, ~0x40);
266
267 /* clear error bits */
268 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, ~0);
269
270 if (edac_pci_add_device(pci, pdata->edac_idx) > 0) {
271 debugf3("%s(): failed edac_pci_add_device()\n", __func__);
272 goto err;
273 }
274
275 if (edac_op_state == EDAC_OPSTATE_INT) {
a26f95fe 276 pdata->irq = irq_of_parse_and_map(op->dev.of_node, 0);
f87bd330 277 res = devm_request_irq(&op->dev, pdata->irq,
a9a753d5
DJ		 278 mpc85xx_pci_isr, IRQF_DISABLED,
279 "[EDAC] PCI err", pci);
280 if (res < 0) {
281 printk(KERN_ERR
282 "%s: Unable to requiest irq %d for "
283 "MPC85xx PCI err\n", __func__, pdata->irq);
f87bd330 284 irq_dispose_mapping(pdata->irq);
a9a753d5
DJ		 285 res = -ENODEV;
286 goto err2;
287 }
288
289 printk(KERN_INFO EDAC_MOD_STR " acquired irq %d for PCI Err\n",
290 pdata->irq);
291 }
292
f87bd330 293 devres_remove_group(&op->dev, mpc85xx_pci_err_probe);
a9a753d5
DJ		 294 debugf3("%s(): success\n", __func__);
295 printk(KERN_INFO EDAC_MOD_STR " PCI err registered\n");
296
297 return 0;
298
299err2:
f87bd330 300 edac_pci_del_device(&op->dev);
a9a753d5
DJ		 301err:
302 edac_pci_free_ctl_info(pci);
f87bd330 303 devres_release_group(&op->dev, mpc85xx_pci_err_probe);
a9a753d5
DJ		 304 return res;
305}
306
2dc11581 307static int mpc85xx_pci_err_remove(struct platform_device *op)
a9a753d5 308{
f87bd330 309 struct edac_pci_ctl_info *pci = dev_get_drvdata(&op->dev);
a9a753d5
DJ		 310 struct mpc85xx_pci_pdata *pdata = pci->pvt_info;
311
312 debugf0("%s()\n", __func__);
313
314 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR,
315 orig_pci_err_cap_dr);
316
317 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, orig_pci_err_en);
318
319 edac_pci_del_device(pci->dev);
320
321 if (edac_op_state == EDAC_OPSTATE_INT)
322 irq_dispose_mapping(pdata->irq);
323
324 edac_pci_free_ctl_info(pci);
325
326 return 0;
327}
328
f87bd330
DJ		 329static struct of_device_id mpc85xx_pci_err_of_match[] = {
330 {
331 .compatible = "fsl,mpc8540-pcix",
332 },
333 {
334 .compatible = "fsl,mpc8540-pci",
335 },
336 {},
337};
952e1c66 338MODULE_DEVICE_TABLE(of, mpc85xx_pci_err_of_match);
f87bd330 339
00006124 340static struct platform_driver mpc85xx_pci_err_driver = {
a9a753d5
DJ		 341 .probe = mpc85xx_pci_err_probe,
342 .remove = __devexit_p(mpc85xx_pci_err_remove),
343 .driver = {
4018294b
GL		 344 .name = "mpc85xx_pci_err",
345 .owner = THIS_MODULE,
346 .of_match_table = mpc85xx_pci_err_of_match,
347 },
a9a753d5
DJ		 348};
349
350#endif /* CONFIG_PCI */
351
352/**************************** L2 Err device ***************************/
353
354/************************ L2 SYSFS parts ***********************************/
355
356static ssize_t mpc85xx_l2_inject_data_hi_show(struct edac_device_ctl_info
357 *edac_dev, char *data)
358{
359 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
360 return sprintf(data, "0x%08x",
361 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJHI));
362}
363
364static ssize_t mpc85xx_l2_inject_data_lo_show(struct edac_device_ctl_info
365 *edac_dev, char *data)
366{
367 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
368 return sprintf(data, "0x%08x",
369 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJLO));
370}
371
372static ssize_t mpc85xx_l2_inject_ctrl_show(struct edac_device_ctl_info
373 *edac_dev, char *data)
374{
375 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
376 return sprintf(data, "0x%08x",
377 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJCTL));
378}
379
380static ssize_t mpc85xx_l2_inject_data_hi_store(struct edac_device_ctl_info
381 *edac_dev, const char *data,
382 size_t count)
383{
384 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
385 if (isdigit(*data)) {
386 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJHI,
387 simple_strtoul(data, NULL, 0));
388 return count;
389 }
390 return 0;
391}
392
393static ssize_t mpc85xx_l2_inject_data_lo_store(struct edac_device_ctl_info
394 *edac_dev, const char *data,
395 size_t count)
396{
397 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
398 if (isdigit(*data)) {
399 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJLO,
400 simple_strtoul(data, NULL, 0));
401 return count;
402 }
403 return 0;
404}
405
406static ssize_t mpc85xx_l2_inject_ctrl_store(struct edac_device_ctl_info
407 *edac_dev, const char *data,
408 size_t count)
409{
410 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
411 if (isdigit(*data)) {
412 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJCTL,
413 simple_strtoul(data, NULL, 0));
414 return count;
415 }
416 return 0;
417}
418
419static struct edac_dev_sysfs_attribute mpc85xx_l2_sysfs_attributes[] = {
420 {
421 .attr = {
422 .name = "inject_data_hi",
423 .mode = (S_IRUGO | S_IWUSR)
424 },
425 .show = mpc85xx_l2_inject_data_hi_show,
426 .store = mpc85xx_l2_inject_data_hi_store},
427 {
428 .attr = {
429 .name = "inject_data_lo",
430 .mode = (S_IRUGO | S_IWUSR)
431 },
432 .show = mpc85xx_l2_inject_data_lo_show,
433 .store = mpc85xx_l2_inject_data_lo_store},
434 {
435 .attr = {
436 .name = "inject_ctrl",
437 .mode = (S_IRUGO | S_IWUSR)
438 },
439 .show = mpc85xx_l2_inject_ctrl_show,
440 .store = mpc85xx_l2_inject_ctrl_store},
441
442 /* End of list */
443 {
444 .attr = {.name = NULL}
445 }
446};
447
448static void mpc85xx_set_l2_sysfs_attributes(struct edac_device_ctl_info
449 *edac_dev)
450{
451 edac_dev->sysfs_attributes = mpc85xx_l2_sysfs_attributes;
452}
453
454/***************************** L2 ops ***********************************/
455
456static void mpc85xx_l2_check(struct edac_device_ctl_info *edac_dev)
457{
458 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
459 u32 err_detect;
460
461 err_detect = in_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET);
462
463 if (!(err_detect & L2_EDE_MASK))
464 return;
465
466 printk(KERN_ERR "ECC Error in CPU L2 cache\n");
467 printk(KERN_ERR "L2 Error Detect Register: 0x%08x\n", err_detect);
468 printk(KERN_ERR "L2 Error Capture Data High Register: 0x%08x\n",
469 in_be32(pdata->l2_vbase + MPC85XX_L2_CAPTDATAHI));
470 printk(KERN_ERR "L2 Error Capture Data Lo Register: 0x%08x\n",
471 in_be32(pdata->l2_vbase + MPC85XX_L2_CAPTDATALO));
472 printk(KERN_ERR "L2 Error Syndrome Register: 0x%08x\n",
473 in_be32(pdata->l2_vbase + MPC85XX_L2_CAPTECC));
474 printk(KERN_ERR "L2 Error Attributes Capture Register: 0x%08x\n",
475 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRATTR));
476 printk(KERN_ERR "L2 Error Address Capture Register: 0x%08x\n",
477 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRADDR));
478
479 /* clear error detect register */
480 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET, err_detect);
481
482 if (err_detect & L2_EDE_CE_MASK)
483 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
484
485 if (err_detect & L2_EDE_UE_MASK)
486 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
487}
488
489static irqreturn_t mpc85xx_l2_isr(int irq, void *dev_id)
490{
491 struct edac_device_ctl_info *edac_dev = dev_id;
492 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
493 u32 err_detect;
494
495 err_detect = in_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET);
496
497 if (!(err_detect & L2_EDE_MASK))
498 return IRQ_NONE;
499
500 mpc85xx_l2_check(edac_dev);
501
502 return IRQ_HANDLED;
503}
504
00006124 505static int __devinit mpc85xx_l2_err_probe(struct platform_device *op)
a9a753d5
DJ		 506{
507 struct edac_device_ctl_info *edac_dev;
508 struct mpc85xx_l2_pdata *pdata;
509 struct resource r;
510 int res;
511
512 if (!devres_open_group(&op->dev, mpc85xx_l2_err_probe, GFP_KERNEL))
513 return -ENOMEM;
514
515 edac_dev = edac_device_alloc_ctl_info(sizeof(*pdata),
516 "cpu", 1, "L", 1, 2, NULL, 0,
517 edac_dev_idx);
518 if (!edac_dev) {
519 devres_release_group(&op->dev, mpc85xx_l2_err_probe);
520 return -ENOMEM;
521 }
522
523 pdata = edac_dev->pvt_info;
524 pdata->name = "mpc85xx_l2_err";
525 pdata->irq = NO_IRQ;
526 edac_dev->dev = &op->dev;
527 dev_set_drvdata(edac_dev->dev, edac_dev);
528 edac_dev->ctl_name = pdata->name;
529 edac_dev->dev_name = pdata->name;
530
a26f95fe 531 res = of_address_to_resource(op->dev.of_node, 0, &r);
a9a753d5
DJ		 532 if (res) {
533 printk(KERN_ERR "%s: Unable to get resource for "
534 "L2 err regs\n", __func__);
535 goto err;
536 }
537
538 /* we only need the error registers */
539 r.start += 0xe00;
540
28f65c11
JP		 541 if (!devm_request_mem_region(&op->dev, r.start, resource_size(&r),
542 pdata->name)) {
a9a753d5
DJ		 543 printk(KERN_ERR "%s: Error while requesting mem region\n",
544 __func__);
545 res = -EBUSY;
546 goto err;
547 }
548
28f65c11 549 pdata->l2_vbase = devm_ioremap(&op->dev, r.start, resource_size(&r));
a9a753d5
DJ		 550 if (!pdata->l2_vbase) {
551 printk(KERN_ERR "%s: Unable to setup L2 err regs\n", __func__);
552 res = -ENOMEM;
553 goto err;
554 }
555
556 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET, ~0);
557
558 orig_l2_err_disable = in_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS);
559
560 /* clear the err_dis */
561 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS, 0);
562
563 edac_dev->mod_name = EDAC_MOD_STR;
564
565 if (edac_op_state == EDAC_OPSTATE_POLL)
566 edac_dev->edac_check = mpc85xx_l2_check;
567
568 mpc85xx_set_l2_sysfs_attributes(edac_dev);
569
570 pdata->edac_idx = edac_dev_idx++;
571
572 if (edac_device_add_device(edac_dev) > 0) {
573 debugf3("%s(): failed edac_device_add_device()\n", __func__);
574 goto err;
575 }
576
577 if (edac_op_state == EDAC_OPSTATE_INT) {
a26f95fe 578 pdata->irq = irq_of_parse_and_map(op->dev.of_node, 0);
a9a753d5
DJ		 579 res = devm_request_irq(&op->dev, pdata->irq,
580 mpc85xx_l2_isr, IRQF_DISABLED,
581 "[EDAC] L2 err", edac_dev);
582 if (res < 0) {
583 printk(KERN_ERR
584 "%s: Unable to requiest irq %d for "
585 "MPC85xx L2 err\n", __func__, pdata->irq);
586 irq_dispose_mapping(pdata->irq);
587 res = -ENODEV;
588 goto err2;
589 }
590
591 printk(KERN_INFO EDAC_MOD_STR " acquired irq %d for L2 Err\n",
592 pdata->irq);
593
594 edac_dev->op_state = OP_RUNNING_INTERRUPT;
595
596 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINTEN, L2_EIE_MASK);
597 }
598
599 devres_remove_group(&op->dev, mpc85xx_l2_err_probe);
600
601 debugf3("%s(): success\n", __func__);
602 printk(KERN_INFO EDAC_MOD_STR " L2 err registered\n");
603
604 return 0;
605
606err2:
607 edac_device_del_device(&op->dev);
608err:
609 devres_release_group(&op->dev, mpc85xx_l2_err_probe);
610 edac_device_free_ctl_info(edac_dev);
611 return res;
612}
613
2dc11581 614static int mpc85xx_l2_err_remove(struct platform_device *op)
a9a753d5
DJ		 615{
616 struct edac_device_ctl_info *edac_dev = dev_get_drvdata(&op->dev);
617 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
618
619 debugf0("%s()\n", __func__);
620
621 if (edac_op_state == EDAC_OPSTATE_INT) {
622 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINTEN, 0);
623 irq_dispose_mapping(pdata->irq);
624 }
625
626 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS, orig_l2_err_disable);
627 edac_device_del_device(&op->dev);
628 edac_device_free_ctl_info(edac_dev);
629 return 0;
630}
631
632static struct of_device_id mpc85xx_l2_err_of_match[] = {
29d6cf26
KG		 633/* deprecate the fsl,85.. forms in the future, 2.6.30? */
634 { .compatible = "fsl,8540-l2-cache-controller", },
635 { .compatible = "fsl,8541-l2-cache-controller", },
636 { .compatible = "fsl,8544-l2-cache-controller", },
637 { .compatible = "fsl,8548-l2-cache-controller", },
638 { .compatible = "fsl,8555-l2-cache-controller", },
639 { .compatible = "fsl,8568-l2-cache-controller", },
640 { .compatible = "fsl,mpc8536-l2-cache-controller", },
641 { .compatible = "fsl,mpc8540-l2-cache-controller", },
642 { .compatible = "fsl,mpc8541-l2-cache-controller", },
643 { .compatible = "fsl,mpc8544-l2-cache-controller", },
644 { .compatible = "fsl,mpc8548-l2-cache-controller", },
645 { .compatible = "fsl,mpc8555-l2-cache-controller", },
646 { .compatible = "fsl,mpc8560-l2-cache-controller", },
647 { .compatible = "fsl,mpc8568-l2-cache-controller", },
cd1542c8 648 { .compatible = "fsl,mpc8569-l2-cache-controller", },
29d6cf26 649 { .compatible = "fsl,mpc8572-l2-cache-controller", },
cd1542c8
AV		 650 { .compatible = "fsl,p1020-l2-cache-controller", },
651 { .compatible = "fsl,p1021-l2-cache-controller", },
a014554e 652 { .compatible = "fsl,p2020-l2-cache-controller", },
a9a753d5
DJ		 653 {},
654};
952e1c66 655MODULE_DEVICE_TABLE(of, mpc85xx_l2_err_of_match);
a9a753d5 656
00006124 657static struct platform_driver mpc85xx_l2_err_driver = {
a9a753d5
DJ		 658 .probe = mpc85xx_l2_err_probe,
659 .remove = mpc85xx_l2_err_remove,
660 .driver = {
4018294b
GL		 661 .name = "mpc85xx_l2_err",
662 .owner = THIS_MODULE,
663 .of_match_table = mpc85xx_l2_err_of_match,
664 },
a9a753d5
DJ		 665};
666
667/**************************** MC Err device ***************************/
668
dcca7c3d
PT		 669/*
670 * Taken from table 8-55 in the MPC8641 User's Manual and/or 9-61 in the
671 * MPC8572 User's Manual. Each line represents a syndrome bit column as a
672 * 64-bit value, but split into an upper and lower 32-bit chunk. The labels
673 * below correspond to Freescale's manuals.
674 */
675static unsigned int ecc_table[16] = {
676 /* MSB LSB */
677 /* [0:31] [32:63] */
678 0xf00fe11e, 0xc33c0ff7, /* Syndrome bit 7 */
679 0x00ff00ff, 0x00fff0ff,
680 0x0f0f0f0f, 0x0f0fff00,
681 0x11113333, 0x7777000f,
682 0x22224444, 0x8888222f,
683 0x44448888, 0xffff4441,
684 0x8888ffff, 0x11118882,
685 0xffff1111, 0x22221114, /* Syndrome bit 0 */
686};
687
688/*
689 * Calculate the correct ECC value for a 64-bit value specified by high:low
690 */
691static u8 calculate_ecc(u32 high, u32 low)
692{
693 u32 mask_low;
694 u32 mask_high;
695 int bit_cnt;
696 u8 ecc = 0;
697 int i;
698 int j;
699
700 for (i = 0; i < 8; i++) {
701 mask_high = ecc_table[i * 2];
702 mask_low = ecc_table[i * 2 + 1];
703 bit_cnt = 0;
704
705 for (j = 0; j < 32; j++) {
706 if ((mask_high >> j) & 1)
707 bit_cnt ^= (high >> j) & 1;
708 if ((mask_low >> j) & 1)
709 bit_cnt ^= (low >> j) & 1;
710 }
711
712 ecc |= bit_cnt << i;
713 }
714
715 return ecc;
716}
717
718/*
719 * Create the syndrome code which is generated if the data line specified by
720 * 'bit' failed. Eg generate an 8-bit codes seen in Table 8-55 in the MPC8641
721 * User's Manual and 9-61 in the MPC8572 User's Manual.
722 */
723static u8 syndrome_from_bit(unsigned int bit) {
724 int i;
725 u8 syndrome = 0;
726
727 /*
728 * Cycle through the upper or lower 32-bit portion of each value in
729 * ecc_table depending on if 'bit' is in the upper or lower half of
730 * 64-bit data.
731 */
732 for (i = bit < 32; i < 16; i += 2)
733 syndrome |= ((ecc_table[i] >> (bit % 32)) & 1) << (i / 2);
734
735 return syndrome;
736}
737
738/*
739 * Decode data and ecc syndrome to determine what went wrong
740 * Note: This can only decode single-bit errors
741 */
742static void sbe_ecc_decode(u32 cap_high, u32 cap_low, u32 cap_ecc,
743 int *bad_data_bit, int *bad_ecc_bit)
744{
745 int i;
746 u8 syndrome;
747
748 *bad_data_bit = -1;
749 *bad_ecc_bit = -1;
750
751 /*
752 * Calculate the ECC of the captured data and XOR it with the captured
753 * ECC to find an ECC syndrome value we can search for
754 */
755 syndrome = calculate_ecc(cap_high, cap_low) ^ cap_ecc;
756
757 /* Check if a data line is stuck... */
758 for (i = 0; i < 64; i++) {
759 if (syndrome == syndrome_from_bit(i)) {
760 *bad_data_bit = i;
761 return;
762 }
763 }
764
765 /* If data is correct, check ECC bits for errors... */
766 for (i = 0; i < 8; i++) {
767 if ((syndrome >> i) & 0x1) {
768 *bad_ecc_bit = i;
769 return;
770 }
771 }
772}
773
a9a753d5
DJ		 774static void mpc85xx_mc_check(struct mem_ctl_info *mci)
775{
776 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
777 struct csrow_info *csrow;
21768639 778 u32 bus_width;
a9a753d5
DJ		 779 u32 err_detect;
780 u32 syndrome;
781 u32 err_addr;
782 u32 pfn;
783 int row_index;
dcca7c3d
PT		 784 u32 cap_high;
785 u32 cap_low;
786 int bad_data_bit;
787 int bad_ecc_bit;
a9a753d5
DJ		 788
789 err_detect = in_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT);
55e5750b 790 if (!err_detect)
a9a753d5
DJ		 791 return;
792
793 mpc85xx_mc_printk(mci, KERN_ERR, "Err Detect Register: %#8.8x\n",
794 err_detect);
795
796 /* no more processing if not ECC bit errors */
797 if (!(err_detect & (DDR_EDE_SBE | DDR_EDE_MBE))) {
798 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT, err_detect);
799 return;
800 }
801
802 syndrome = in_be32(pdata->mc_vbase + MPC85XX_MC_CAPTURE_ECC);
21768639
PT		 803
804 /* Mask off appropriate bits of syndrome based on bus width */
805 bus_width = (in_be32(pdata->mc_vbase + MPC85XX_MC_DDR_SDRAM_CFG) &
806 DSC_DBW_MASK) ? 32 : 64;
807 if (bus_width == 64)
808 syndrome &= 0xff;
809 else
810 syndrome &= 0xffff;
811
a9a753d5
DJ		 812 err_addr = in_be32(pdata->mc_vbase + MPC85XX_MC_CAPTURE_ADDRESS);
813 pfn = err_addr >> PAGE_SHIFT;
814
815 for (row_index = 0; row_index < mci->nr_csrows; row_index++) {
816 csrow = &mci->csrows[row_index];
817 if ((pfn >= csrow->first_page) && (pfn <= csrow->last_page))
818 break;
819 }
820
dcca7c3d
PT		 821 cap_high = in_be32(pdata->mc_vbase + MPC85XX_MC_CAPTURE_DATA_HI);
822 cap_low = in_be32(pdata->mc_vbase + MPC85XX_MC_CAPTURE_DATA_LO);
823
824 /*
825 * Analyze single-bit errors on 64-bit wide buses
826 * TODO: Add support for 32-bit wide buses
827 */
828 if ((err_detect & DDR_EDE_SBE) && (bus_width == 64)) {
829 sbe_ecc_decode(cap_high, cap_low, syndrome,
830 &bad_data_bit, &bad_ecc_bit);
831
832 if (bad_data_bit != -1)
833 mpc85xx_mc_printk(mci, KERN_ERR,
834 "Faulty Data bit: %d\n", bad_data_bit);
835 if (bad_ecc_bit != -1)
836 mpc85xx_mc_printk(mci, KERN_ERR,
837 "Faulty ECC bit: %d\n", bad_ecc_bit);
838
839 mpc85xx_mc_printk(mci, KERN_ERR,
840 "Expected Data / ECC:\t%#8.8x_%08x / %#2.2x\n",
841 cap_high ^ (1 << (bad_data_bit - 32)),
842 cap_low ^ (1 << bad_data_bit),
843 syndrome ^ (1 << bad_ecc_bit));
844 }
845
846 mpc85xx_mc_printk(mci, KERN_ERR,
847 "Captured Data / ECC:\t%#8.8x_%08x / %#2.2x\n",
848 cap_high, cap_low, syndrome);
849 mpc85xx_mc_printk(mci, KERN_ERR, "Err addr: %#8.8x\n", err_addr);
a9a753d5
DJ		 850 mpc85xx_mc_printk(mci, KERN_ERR, "PFN: %#8.8x\n", pfn);
851
852 /* we are out of range */
853 if (row_index == mci->nr_csrows)
854 mpc85xx_mc_printk(mci, KERN_ERR, "PFN out of range!\n");
855
856 if (err_detect & DDR_EDE_SBE)
ad4d6e23
MCC		 857 edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci,
858 pfn, err_addr & ~PAGE_MASK, syndrome,
859 row_index, 0, -1,
860 mci->ctl_name, "", NULL);
a9a753d5
DJ		 861
862 if (err_detect & DDR_EDE_MBE)
ad4d6e23
MCC		 863 edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci,
864 pfn, err_addr & ~PAGE_MASK, syndrome,
865 row_index, 0, -1,
866 mci->ctl_name, "", NULL);
a9a753d5
DJ		 867
868 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT, err_detect);
869}
870
871static irqreturn_t mpc85xx_mc_isr(int irq, void *dev_id)
872{
873 struct mem_ctl_info *mci = dev_id;
874 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
875 u32 err_detect;
876
877 err_detect = in_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT);
878 if (!err_detect)
879 return IRQ_NONE;
880
881 mpc85xx_mc_check(mci);
882
883 return IRQ_HANDLED;
884}
885
886static void __devinit mpc85xx_init_csrows(struct mem_ctl_info *mci)
887{
888 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
889 struct csrow_info *csrow;
084a4fcc 890 struct dimm_info *dimm;
a9a753d5
DJ		 891 u32 sdram_ctl;
892 u32 sdtype;
893 enum mem_type mtype;
894 u32 cs_bnds;
895 int index;
896
897 sdram_ctl = in_be32(pdata->mc_vbase + MPC85XX_MC_DDR_SDRAM_CFG);
898
899 sdtype = sdram_ctl & DSC_SDTYPE_MASK;
900 if (sdram_ctl & DSC_RD_EN) {
901 switch (sdtype) {
902 case DSC_SDTYPE_DDR:
903 mtype = MEM_RDDR;
904 break;
905 case DSC_SDTYPE_DDR2:
906 mtype = MEM_RDDR2;
907 break;
b1cfebc9
YS		 908 case DSC_SDTYPE_DDR3:
909 mtype = MEM_RDDR3;
910 break;
a9a753d5
DJ		 911 default:
912 mtype = MEM_UNKNOWN;
913 break;
914 }
915 } else {
916 switch (sdtype) {
917 case DSC_SDTYPE_DDR:
918 mtype = MEM_DDR;
919 break;
920 case DSC_SDTYPE_DDR2:
921 mtype = MEM_DDR2;
922 break;
b1cfebc9
YS		 923 case DSC_SDTYPE_DDR3:
924 mtype = MEM_DDR3;
925 break;
a9a753d5
DJ		 926 default:
927 mtype = MEM_UNKNOWN;
928 break;
929 }
930 }
931
932 for (index = 0; index < mci->nr_csrows; index++) {
933 u32 start;
934 u32 end;
935
936 csrow = &mci->csrows[index];
084a4fcc
MCC		 937 dimm = csrow->channels[0].dimm;
938
a9a753d5
DJ		 939 cs_bnds = in_be32(pdata->mc_vbase + MPC85XX_MC_CS_BNDS_0 +
940 (index * MPC85XX_MC_CS_BNDS_OFS));
b4846251
IS		 941
942 start = (cs_bnds & 0xffff0000) >> 16;
943 end = (cs_bnds & 0x0000ffff);
a9a753d5
DJ		 944
945 if (start == end)
946 continue; /* not populated */
947
b4846251
IS		 948 start <<= (24 - PAGE_SHIFT);
949 end <<= (24 - PAGE_SHIFT);
950 end |= (1 << (24 - PAGE_SHIFT)) - 1;
951
cff9279e
PT		 952 csrow->first_page = start;
953 csrow->last_page = end;
a895bf8b
MCC		 954
955 dimm->nr_pages = end + 1 - start;
084a4fcc
MCC		 956 dimm->grain = 8;
957 dimm->mtype = mtype;
958 dimm->dtype = DEV_UNKNOWN;
a9a753d5 959 if (sdram_ctl & DSC_X32_EN)
084a4fcc
MCC		 960 dimm->dtype = DEV_X32;
961 dimm->edac_mode = EDAC_SECDED;
a9a753d5
DJ		 962 }
963}
964
00006124 965static int __devinit mpc85xx_mc_err_probe(struct platform_device *op)
a9a753d5
DJ		 966{
967 struct mem_ctl_info *mci;
ad4d6e23 968 struct edac_mc_layer layers[2];
a9a753d5
DJ		 969 struct mpc85xx_mc_pdata *pdata;
970 struct resource r;
971 u32 sdram_ctl;
972 int res;
973
974 if (!devres_open_group(&op->dev, mpc85xx_mc_err_probe, GFP_KERNEL))
975 return -ENOMEM;
976
ad4d6e23
MCC		 977 layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
978 layers[0].size = 4;
979 layers[0].is_virt_csrow = true;
980 layers[1].type = EDAC_MC_LAYER_CHANNEL;
981 layers[1].size = 1;
982 layers[1].is_virt_csrow = false;
b9bc5ddb
KP		 983 mci = edac_mc_alloc(edac_mc_idx, ARRAY_SIZE(layers), layers,
984 sizeof(*pdata));
a9a753d5
DJ		 985 if (!mci) {
986 devres_release_group(&op->dev, mpc85xx_mc_err_probe);
987 return -ENOMEM;
988 }
989
990 pdata = mci->pvt_info;
991 pdata->name = "mpc85xx_mc_err";
992 pdata->irq = NO_IRQ;
993 mci->dev = &op->dev;
994 pdata->edac_idx = edac_mc_idx++;
995 dev_set_drvdata(mci->dev, mci);
996 mci->ctl_name = pdata->name;
997 mci->dev_name = pdata->name;
998
a26f95fe 999 res = of_address_to_resource(op->dev.of_node, 0, &r);
a9a753d5
DJ		 1000 if (res) {
1001 printk(KERN_ERR "%s: Unable to get resource for MC err regs\n",
1002 __func__);
1003 goto err;
1004 }
1005
28f65c11
JP		 1006 if (!devm_request_mem_region(&op->dev, r.start, resource_size(&r),
1007 pdata->name)) {
a9a753d5
DJ		 1008 printk(KERN_ERR "%s: Error while requesting mem region\n",
1009 __func__);
1010 res = -EBUSY;
1011 goto err;
1012 }
1013
28f65c11 1014 pdata->mc_vbase = devm_ioremap(&op->dev, r.start, resource_size(&r));
a9a753d5
DJ		 1015 if (!pdata->mc_vbase) {
1016 printk(KERN_ERR "%s: Unable to setup MC err regs\n", __func__);
1017 res = -ENOMEM;
1018 goto err;
1019 }
1020
1021 sdram_ctl = in_be32(pdata->mc_vbase + MPC85XX_MC_DDR_SDRAM_CFG);
1022 if (!(sdram_ctl & DSC_ECC_EN)) {
1023 /* no ECC */
1024 printk(KERN_WARNING "%s: No ECC DIMMs discovered\n", __func__);
1025 res = -ENODEV;
1026 goto err;
1027 }
1028
1029 debugf3("%s(): init mci\n", __func__);
1030 mci->mtype_cap = MEM_FLAG_RDDR | MEM_FLAG_RDDR2 |
1031 MEM_FLAG_DDR | MEM_FLAG_DDR2;
1032 mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
1033 mci->edac_cap = EDAC_FLAG_SECDED;
1034 mci->mod_name = EDAC_MOD_STR;
1035 mci->mod_ver = MPC85XX_REVISION;
1036
1037 if (edac_op_state == EDAC_OPSTATE_POLL)
1038 mci->edac_check = mpc85xx_mc_check;
1039
1040 mci->ctl_page_to_phys = NULL;
1041
1042 mci->scrub_mode = SCRUB_SW_SRC;
1043
1044 mpc85xx_set_mc_sysfs_attributes(mci);
1045
1046 mpc85xx_init_csrows(mci);
1047
a9a753d5
DJ		 1048 /* store the original error disable bits */
1049 orig_ddr_err_disable =
1050 in_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DISABLE);
1051 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DISABLE, 0);
1052
1053 /* clear all error bits */
1054 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT, ~0);
1055
1056 if (edac_mc_add_mc(mci)) {
1057 debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
1058 goto err;
1059 }
1060
1061 if (edac_op_state == EDAC_OPSTATE_INT) {
1062 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_INT_EN,
1063 DDR_EIE_MBEE | DDR_EIE_SBEE);
1064
1065 /* store the original error management threshold */
1066 orig_ddr_err_sbe = in_be32(pdata->mc_vbase +
1067 MPC85XX_MC_ERR_SBE) & 0xff0000;
1068
1069 /* set threshold to 1 error per interrupt */
1070 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_SBE, 0x10000);
1071
1072 /* register interrupts */
a26f95fe 1073 pdata->irq = irq_of_parse_and_map(op->dev.of_node, 0);
a9a753d5 1074 res = devm_request_irq(&op->dev, pdata->irq,
60be7551
AK		 1075 mpc85xx_mc_isr,
1076 IRQF_DISABLED | IRQF_SHARED,
a9a753d5
DJ		 1077 "[EDAC] MC err", mci);
1078 if (res < 0) {
1079 printk(KERN_ERR "%s: Unable to request irq %d for "
1080 "MPC85xx DRAM ERR\n", __func__, pdata->irq);
1081 irq_dispose_mapping(pdata->irq);
1082 res = -ENODEV;
1083 goto err2;
1084 }
1085
1086 printk(KERN_INFO EDAC_MOD_STR " acquired irq %d for MC\n",
1087 pdata->irq);
1088 }
1089
1090 devres_remove_group(&op->dev, mpc85xx_mc_err_probe);
1091 debugf3("%s(): success\n", __func__);
1092 printk(KERN_INFO EDAC_MOD_STR " MC err registered\n");
1093
1094 return 0;
1095
1096err2:
1097 edac_mc_del_mc(&op->dev);
1098err:
1099 devres_release_group(&op->dev, mpc85xx_mc_err_probe);
1100 edac_mc_free(mci);
1101 return res;
1102}
1103
2dc11581 1104static int mpc85xx_mc_err_remove(struct platform_device *op)
a9a753d5
DJ		 1105{
1106 struct mem_ctl_info *mci = dev_get_drvdata(&op->dev);
1107 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
1108
1109 debugf0("%s()\n", __func__);
1110
1111 if (edac_op_state == EDAC_OPSTATE_INT) {
1112 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_INT_EN, 0);
1113 irq_dispose_mapping(pdata->irq);
1114 }
1115
1116 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DISABLE,
1117 orig_ddr_err_disable);
1118 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_SBE, orig_ddr_err_sbe);
1119
1120 edac_mc_del_mc(&op->dev);
1121 edac_mc_free(mci);
1122 return 0;
1123}
1124
1125static struct of_device_id mpc85xx_mc_err_of_match[] = {
29d6cf26
KG		 1126/* deprecate the fsl,85.. forms in the future, 2.6.30? */
1127 { .compatible = "fsl,8540-memory-controller", },
1128 { .compatible = "fsl,8541-memory-controller", },
1129 { .compatible = "fsl,8544-memory-controller", },
1130 { .compatible = "fsl,8548-memory-controller", },
1131 { .compatible = "fsl,8555-memory-controller", },
1132 { .compatible = "fsl,8568-memory-controller", },
1133 { .compatible = "fsl,mpc8536-memory-controller", },
1134 { .compatible = "fsl,mpc8540-memory-controller", },
1135 { .compatible = "fsl,mpc8541-memory-controller", },
1136 { .compatible = "fsl,mpc8544-memory-controller", },
1137 { .compatible = "fsl,mpc8548-memory-controller", },
1138 { .compatible = "fsl,mpc8555-memory-controller", },
1139 { .compatible = "fsl,mpc8560-memory-controller", },
1140 { .compatible = "fsl,mpc8568-memory-controller", },
5528e229 1141 { .compatible = "fsl,mpc8569-memory-controller", },
29d6cf26 1142 { .compatible = "fsl,mpc8572-memory-controller", },
b4846251 1143 { .compatible = "fsl,mpc8349-memory-controller", },
cd1542c8
AV		 1144 { .compatible = "fsl,p1020-memory-controller", },
1145 { .compatible = "fsl,p1021-memory-controller", },
a014554e 1146 { .compatible = "fsl,p2020-memory-controller", },
86f9a433 1147 { .compatible = "fsl,qoriq-memory-controller", },
a9a753d5
DJ		 1148 {},
1149};
952e1c66 1150MODULE_DEVICE_TABLE(of, mpc85xx_mc_err_of_match);
a9a753d5 1151
00006124 1152static struct platform_driver mpc85xx_mc_err_driver = {
a9a753d5
DJ		 1153 .probe = mpc85xx_mc_err_probe,
1154 .remove = mpc85xx_mc_err_remove,
1155 .driver = {
4018294b
GL		 1156 .name = "mpc85xx_mc_err",
1157 .owner = THIS_MODULE,
1158 .of_match_table = mpc85xx_mc_err_of_match,
1159 },
a9a753d5
DJ		 1160};
1161
bd1688dc 1162#ifdef CONFIG_FSL_SOC_BOOKE
60be7551
AK		 1163static void __init mpc85xx_mc_clear_rfxe(void *data)
1164{
1165 orig_hid1[smp_processor_id()] = mfspr(SPRN_HID1);
a94d7b35 1166 mtspr(SPRN_HID1, (orig_hid1[smp_processor_id()] & ~HID1_RFXE));
60be7551 1167}
b4846251 1168#endif
60be7551 1169
a9a753d5
DJ		 1170static int __init mpc85xx_mc_init(void)
1171{
1172 int res = 0;
a94d7b35 1173 u32 pvr = 0;
a9a753d5
DJ		 1174
1175 printk(KERN_INFO "Freescale(R) MPC85xx EDAC driver, "
1176 "(C) 2006 Montavista Software\n");
1177
1178 /* make sure error reporting method is sane */
1179 switch (edac_op_state) {
1180 case EDAC_OPSTATE_POLL:
1181 case EDAC_OPSTATE_INT:
1182 break;
1183 default:
1184 edac_op_state = EDAC_OPSTATE_INT;
1185 break;
1186 }
1187
00006124 1188 res = platform_driver_register(&mpc85xx_mc_err_driver);
a9a753d5
DJ		 1189 if (res)
1190 printk(KERN_WARNING EDAC_MOD_STR "MC fails to register\n");
1191
00006124 1192 res = platform_driver_register(&mpc85xx_l2_err_driver);
a9a753d5
DJ		 1193 if (res)
1194 printk(KERN_WARNING EDAC_MOD_STR "L2 fails to register\n");
1195
1196#ifdef CONFIG_PCI
00006124 1197 res = platform_driver_register(&mpc85xx_pci_err_driver);
a9a753d5
DJ		 1198 if (res)
1199 printk(KERN_WARNING EDAC_MOD_STR "PCI fails to register\n");
1200#endif
1201
bd1688dc 1202#ifdef CONFIG_FSL_SOC_BOOKE
a94d7b35
KG		 1203 pvr = mfspr(SPRN_PVR);
1204
1205 if ((PVR_VER(pvr) == PVR_VER_E500V1) ||
1206 (PVR_VER(pvr) == PVR_VER_E500V2)) {
1207 /*
1208 * need to clear HID1[RFXE] to disable machine check int
1209 * so we can catch it
1210 */
1211 if (edac_op_state == EDAC_OPSTATE_INT)
1212 on_each_cpu(mpc85xx_mc_clear_rfxe, NULL, 0);
1213 }
b4846251 1214#endif
a9a753d5
DJ		 1215
1216 return 0;
1217}
1218
1219module_init(mpc85xx_mc_init);
1220
bd1688dc 1221#ifdef CONFIG_FSL_SOC_BOOKE
60be7551
AK		 1222static void __exit mpc85xx_mc_restore_hid1(void *data)
1223{
1224 mtspr(SPRN_HID1, orig_hid1[smp_processor_id()]);
1225}
b4846251 1226#endif
60be7551 1227
a9a753d5
DJ		 1228static void __exit mpc85xx_mc_exit(void)
1229{
bd1688dc 1230#ifdef CONFIG_FSL_SOC_BOOKE
a94d7b35
KG		 1231 u32 pvr = mfspr(SPRN_PVR);
1232
1233 if ((PVR_VER(pvr) == PVR_VER_E500V1) ||
1234 (PVR_VER(pvr) == PVR_VER_E500V2)) {
1235 on_each_cpu(mpc85xx_mc_restore_hid1, NULL, 0);
1236 }
b4846251 1237#endif
a9a753d5 1238#ifdef CONFIG_PCI
00006124 1239 platform_driver_unregister(&mpc85xx_pci_err_driver);
a9a753d5 1240#endif
00006124
GL		 1241 platform_driver_unregister(&mpc85xx_l2_err_driver);
1242 platform_driver_unregister(&mpc85xx_mc_err_driver);
a9a753d5
DJ		 1243}
1244
1245module_exit(mpc85xx_mc_exit);
1246
1247MODULE_LICENSE("GPL");
1248MODULE_AUTHOR("Montavista Software, Inc.");
1249module_param(edac_op_state, int, 0444);
1250MODULE_PARM_DESC(edac_op_state,
1251 "EDAC Error Reporting state: 0=Poll, 2=Interrupt");
Linux kernel - Deliverables
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