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PM / sleep: Asynchronous threads for suspend_noirq
[linux/fpc-iii.git] / drivers / edac / mpc85xx_edac.c
blob8f9182179a7c804088d1889ac96c7f90a28d804e
1 /*
2 * Freescale MPC85xx Memory Controller kenel module
3 *
4 * Parts Copyrighted (c) 2013 by Freescale Semiconductor, Inc.
5 *
6 * Author: Dave Jiang <djiang@mvista.com>
7 *
8 * 2006-2007 (c) MontaVista Software, Inc. This file is licensed under
9 * the terms of the GNU General Public License version 2. This program
10 * is licensed "as is" without any warranty of any kind, whether express
11 * or implied.
12 *
13 */
14 #include <linux/module.h>
15 #include <linux/init.h>
16 #include <linux/interrupt.h>
17 #include <linux/ctype.h>
18 #include <linux/io.h>
19 #include <linux/mod_devicetable.h>
20 #include <linux/edac.h>
21 #include <linux/smp.h>
22 #include <linux/gfp.h>
23
24 #include <linux/of_platform.h>
25 #include <linux/of_device.h>
26 #include "edac_module.h"
27 #include "edac_core.h"
28 #include "mpc85xx_edac.h"
29
30 static int edac_dev_idx;
31 #ifdef CONFIG_PCI
32 static int edac_pci_idx;
33 #endif
34 static int edac_mc_idx;
35
36 static u32 orig_ddr_err_disable;
37 static u32 orig_ddr_err_sbe;
38
39 /*
40 * PCI Err defines
41 */
42 #ifdef CONFIG_PCI
43 static u32 orig_pci_err_cap_dr;
44 static u32 orig_pci_err_en;
45 #endif
46
47 static u32 orig_l2_err_disable;
48 #ifdef CONFIG_FSL_SOC_BOOKE
49 static u32 orig_hid1[2];
50 #endif
51
52 /************************ MC SYSFS parts ***********************************/
53
54 #define to_mci(k) container_of(k, struct mem_ctl_info, dev)
55
56 static ssize_t mpc85xx_mc_inject_data_hi_show(struct device *dev,
57 struct device_attribute *mattr,
58 char *data)
59 {
60 struct mem_ctl_info *mci = to_mci(dev);
61 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
62 return sprintf(data, "0x%08x",
63 in_be32(pdata->mc_vbase +
64 MPC85XX_MC_DATA_ERR_INJECT_HI));
65 }
66
67 static ssize_t mpc85xx_mc_inject_data_lo_show(struct device *dev,
68 struct device_attribute *mattr,
69 char *data)
70 {
71 struct mem_ctl_info *mci = to_mci(dev);
72 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
73 return sprintf(data, "0x%08x",
74 in_be32(pdata->mc_vbase +
75 MPC85XX_MC_DATA_ERR_INJECT_LO));
76 }
77
78 static ssize_t mpc85xx_mc_inject_ctrl_show(struct device *dev,
79 struct device_attribute *mattr,
80 char *data)
81 {
82 struct mem_ctl_info *mci = to_mci(dev);
83 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
84 return sprintf(data, "0x%08x",
85 in_be32(pdata->mc_vbase + MPC85XX_MC_ECC_ERR_INJECT));
86 }
87
88 static ssize_t mpc85xx_mc_inject_data_hi_store(struct device *dev,
89 struct device_attribute *mattr,
90 const char *data, size_t count)
91 {
92 struct mem_ctl_info *mci = to_mci(dev);
93 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
94 if (isdigit(*data)) {
95 out_be32(pdata->mc_vbase + MPC85XX_MC_DATA_ERR_INJECT_HI,
96 simple_strtoul(data, NULL, 0));
97 return count;
98 }
99 return 0;
100 }
101
102 static ssize_t mpc85xx_mc_inject_data_lo_store(struct device *dev,
103 struct device_attribute *mattr,
104 const char *data, size_t count)
105 {
106 struct mem_ctl_info *mci = to_mci(dev);
107 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
108 if (isdigit(*data)) {
109 out_be32(pdata->mc_vbase + MPC85XX_MC_DATA_ERR_INJECT_LO,
110 simple_strtoul(data, NULL, 0));
111 return count;
112 }
113 return 0;
114 }
115
116 static ssize_t mpc85xx_mc_inject_ctrl_store(struct device *dev,
117 struct device_attribute *mattr,
118 const char *data, size_t count)
119 {
120 struct mem_ctl_info *mci = to_mci(dev);
121 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
122 if (isdigit(*data)) {
123 out_be32(pdata->mc_vbase + MPC85XX_MC_ECC_ERR_INJECT,
124 simple_strtoul(data, NULL, 0));
125 return count;
126 }
127 return 0;
128 }
129
130 DEVICE_ATTR(inject_data_hi, S_IRUGO | S_IWUSR,
131 mpc85xx_mc_inject_data_hi_show, mpc85xx_mc_inject_data_hi_store);
132 DEVICE_ATTR(inject_data_lo, S_IRUGO | S_IWUSR,
133 mpc85xx_mc_inject_data_lo_show, mpc85xx_mc_inject_data_lo_store);
134 DEVICE_ATTR(inject_ctrl, S_IRUGO | S_IWUSR,
135 mpc85xx_mc_inject_ctrl_show, mpc85xx_mc_inject_ctrl_store);
136
137 static int mpc85xx_create_sysfs_attributes(struct mem_ctl_info *mci)
138 {
139 int rc;
140
141 rc = device_create_file(&mci->dev, &dev_attr_inject_data_hi);
142 if (rc < 0)
143 return rc;
144 rc = device_create_file(&mci->dev, &dev_attr_inject_data_lo);
145 if (rc < 0)
146 return rc;
147 rc = device_create_file(&mci->dev, &dev_attr_inject_ctrl);
148 if (rc < 0)
149 return rc;
150
151 return 0;
152 }
153
154 static void mpc85xx_remove_sysfs_attributes(struct mem_ctl_info *mci)
155 {
156 device_remove_file(&mci->dev, &dev_attr_inject_data_hi);
157 device_remove_file(&mci->dev, &dev_attr_inject_data_lo);
158 device_remove_file(&mci->dev, &dev_attr_inject_ctrl);
159 }
160
161 /**************************** PCI Err device ***************************/
162 #ifdef CONFIG_PCI
163
164 static void mpc85xx_pci_check(struct edac_pci_ctl_info *pci)
165 {
166 struct mpc85xx_pci_pdata *pdata = pci->pvt_info;
167 u32 err_detect;
168
169 err_detect = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR);
170
171 /* master aborts can happen during PCI config cycles */
172 if (!(err_detect & ~(PCI_EDE_MULTI_ERR | PCI_EDE_MST_ABRT))) {
173 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, err_detect);
174 return;
175 }
176
177 printk(KERN_ERR "PCI error(s) detected\n");
178 printk(KERN_ERR "PCI/X ERR_DR register: %#08x\n", err_detect);
179
180 printk(KERN_ERR "PCI/X ERR_ATTRIB register: %#08x\n",
181 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ATTRIB));
182 printk(KERN_ERR "PCI/X ERR_ADDR register: %#08x\n",
183 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ADDR));
184 printk(KERN_ERR "PCI/X ERR_EXT_ADDR register: %#08x\n",
185 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EXT_ADDR));
186 printk(KERN_ERR "PCI/X ERR_DL register: %#08x\n",
187 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DL));
188 printk(KERN_ERR "PCI/X ERR_DH register: %#08x\n",
189 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DH));
190
191 /* clear error bits */
192 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, err_detect);
193
194 if (err_detect & PCI_EDE_PERR_MASK)
195 edac_pci_handle_pe(pci, pci->ctl_name);
196
197 if ((err_detect & ~PCI_EDE_MULTI_ERR) & ~PCI_EDE_PERR_MASK)
198 edac_pci_handle_npe(pci, pci->ctl_name);
199 }
200
201 static void mpc85xx_pcie_check(struct edac_pci_ctl_info *pci)
202 {
203 struct mpc85xx_pci_pdata *pdata = pci->pvt_info;
204 u32 err_detect;
205
206 err_detect = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR);
207
208 pr_err("PCIe error(s) detected\n");
209 pr_err("PCIe ERR_DR register: 0x%08x\n", err_detect);
210 pr_err("PCIe ERR_CAP_STAT register: 0x%08x\n",
211 in_be32(pdata->pci_vbase + MPC85XX_PCI_GAS_TIMR));
212 pr_err("PCIe ERR_CAP_R0 register: 0x%08x\n",
213 in_be32(pdata->pci_vbase + MPC85XX_PCIE_ERR_CAP_R0));
214 pr_err("PCIe ERR_CAP_R1 register: 0x%08x\n",
215 in_be32(pdata->pci_vbase + MPC85XX_PCIE_ERR_CAP_R1));
216 pr_err("PCIe ERR_CAP_R2 register: 0x%08x\n",
217 in_be32(pdata->pci_vbase + MPC85XX_PCIE_ERR_CAP_R2));
218 pr_err("PCIe ERR_CAP_R3 register: 0x%08x\n",
219 in_be32(pdata->pci_vbase + MPC85XX_PCIE_ERR_CAP_R3));
220
221 /* clear error bits */
222 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, err_detect);
223 }
224
225 static int mpc85xx_pcie_find_capability(struct device_node *np)
226 {
227 struct pci_controller *hose;
228
229 if (!np)
230 return -EINVAL;
231
232 hose = pci_find_hose_for_OF_device(np);
233
234 return early_find_capability(hose, 0, 0, PCI_CAP_ID_EXP);
235 }
236
237 static irqreturn_t mpc85xx_pci_isr(int irq, void *dev_id)
238 {
239 struct edac_pci_ctl_info *pci = dev_id;
240 struct mpc85xx_pci_pdata *pdata = pci->pvt_info;
241 u32 err_detect;
242
243 err_detect = in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR);
244
245 if (!err_detect)
246 return IRQ_NONE;
247
248 if (pdata->is_pcie)
249 mpc85xx_pcie_check(pci);
250 else
251 mpc85xx_pci_check(pci);
252
253 return IRQ_HANDLED;
254 }
255
256 int mpc85xx_pci_err_probe(struct platform_device *op)
257 {
258 struct edac_pci_ctl_info *pci;
259 struct mpc85xx_pci_pdata *pdata;
260 struct resource r;
261 int res = 0;
262
263 if (!devres_open_group(&op->dev, mpc85xx_pci_err_probe, GFP_KERNEL))
264 return -ENOMEM;
265
266 pci = edac_pci_alloc_ctl_info(sizeof(*pdata), "mpc85xx_pci_err");
267 if (!pci)
268 return -ENOMEM;
269
270 /* make sure error reporting method is sane */
271 switch (edac_op_state) {
272 case EDAC_OPSTATE_POLL:
273 case EDAC_OPSTATE_INT:
274 break;
275 default:
276 edac_op_state = EDAC_OPSTATE_INT;
277 break;
278 }
279
280 pdata = pci->pvt_info;
281 pdata->name = "mpc85xx_pci_err";
282 pdata->irq = NO_IRQ;
283
284 if (mpc85xx_pcie_find_capability(op->dev.of_node) > 0)
285 pdata->is_pcie = true;
286
287 dev_set_drvdata(&op->dev, pci);
288 pci->dev = &op->dev;
289 pci->mod_name = EDAC_MOD_STR;
290 pci->ctl_name = pdata->name;
291 pci->dev_name = dev_name(&op->dev);
292
293 if (edac_op_state == EDAC_OPSTATE_POLL) {
294 if (pdata->is_pcie)
295 pci->edac_check = mpc85xx_pcie_check;
296 else
297 pci->edac_check = mpc85xx_pci_check;
298 }
299
300 pdata->edac_idx = edac_pci_idx++;
301
302 res = of_address_to_resource(op->dev.of_node, 0, &r);
303 if (res) {
304 printk(KERN_ERR "%s: Unable to get resource for "
305 "PCI err regs\n", __func__);
306 goto err;
307 }
308
309 /* we only need the error registers */
310 r.start += 0xe00;
311
312 if (!devm_request_mem_region(&op->dev, r.start, resource_size(&r),
313 pdata->name)) {
314 printk(KERN_ERR "%s: Error while requesting mem region\n",
315 __func__);
316 res = -EBUSY;
317 goto err;
318 }
319
320 pdata->pci_vbase = devm_ioremap(&op->dev, r.start, resource_size(&r));
321 if (!pdata->pci_vbase) {
322 printk(KERN_ERR "%s: Unable to setup PCI err regs\n", __func__);
323 res = -ENOMEM;
324 goto err;
325 }
326
327 if (pdata->is_pcie) {
328 orig_pci_err_cap_dr =
329 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ADDR);
330 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ADDR, ~0);
331 orig_pci_err_en =
332 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN);
333 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, 0);
334 } else {
335 orig_pci_err_cap_dr =
336 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR);
337
338 /* PCI master abort is expected during config cycles */
339 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_CAP_DR, 0x40);
340
341 orig_pci_err_en =
342 in_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN);
343
344 /* disable master abort reporting */
345 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, ~0x40);
346 }
347
348 /* clear error bits */
349 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_DR, ~0);
350
351 if (edac_pci_add_device(pci, pdata->edac_idx) > 0) {
352 edac_dbg(3, "failed edac_pci_add_device()\n");
353 goto err;
354 }
355
356 if (edac_op_state == EDAC_OPSTATE_INT) {
357 pdata->irq = irq_of_parse_and_map(op->dev.of_node, 0);
358 res = devm_request_irq(&op->dev, pdata->irq,
359 mpc85xx_pci_isr,
360 IRQF_DISABLED | IRQF_SHARED,
361 "[EDAC] PCI err", pci);
362 if (res < 0) {
363 printk(KERN_ERR
364 "%s: Unable to request irq %d for "
365 "MPC85xx PCI err\n", __func__, pdata->irq);
366 irq_dispose_mapping(pdata->irq);
367 res = -ENODEV;
368 goto err2;
369 }
370
371 printk(KERN_INFO EDAC_MOD_STR " acquired irq %d for PCI Err\n",
372 pdata->irq);
373 }
374
375 if (pdata->is_pcie) {
376 /*
377 * Enable all PCIe error interrupt & error detect except invalid
378 * PEX_CONFIG_ADDR/PEX_CONFIG_DATA access interrupt generation
379 * enable bit and invalid PEX_CONFIG_ADDR/PEX_CONFIG_DATA access
380 * detection enable bit. Because PCIe bus code to initialize and
381 * configure these PCIe devices on booting will use some invalid
382 * PEX_CONFIG_ADDR/PEX_CONFIG_DATA, edac driver prints the much
383 * notice information. So disable this detect to fix ugly print.
384 */
385 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_EN, ~0
386 & ~PEX_ERR_ICCAIE_EN_BIT);
387 out_be32(pdata->pci_vbase + MPC85XX_PCI_ERR_ADDR, 0
388 | PEX_ERR_ICCAD_DISR_BIT);
389 }
390
391 devres_remove_group(&op->dev, mpc85xx_pci_err_probe);
392 edac_dbg(3, "success\n");
393 printk(KERN_INFO EDAC_MOD_STR " PCI err registered\n");
394
395 return 0;
396
397 err2:
398 edac_pci_del_device(&op->dev);
399 err:
400 edac_pci_free_ctl_info(pci);
401 devres_release_group(&op->dev, mpc85xx_pci_err_probe);
402 return res;
403 }
404 EXPORT_SYMBOL(mpc85xx_pci_err_probe);
405
406 #endif /* CONFIG_PCI */
407
408 /**************************** L2 Err device ***************************/
409
410 /************************ L2 SYSFS parts ***********************************/
411
412 static ssize_t mpc85xx_l2_inject_data_hi_show(struct edac_device_ctl_info
413 *edac_dev, char *data)
414 {
415 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
416 return sprintf(data, "0x%08x",
417 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJHI));
418 }
419
420 static ssize_t mpc85xx_l2_inject_data_lo_show(struct edac_device_ctl_info
421 *edac_dev, char *data)
422 {
423 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
424 return sprintf(data, "0x%08x",
425 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJLO));
426 }
427
428 static ssize_t mpc85xx_l2_inject_ctrl_show(struct edac_device_ctl_info
429 *edac_dev, char *data)
430 {
431 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
432 return sprintf(data, "0x%08x",
433 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJCTL));
434 }
435
436 static ssize_t mpc85xx_l2_inject_data_hi_store(struct edac_device_ctl_info
437 *edac_dev, const char *data,
438 size_t count)
439 {
440 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
441 if (isdigit(*data)) {
442 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJHI,
443 simple_strtoul(data, NULL, 0));
444 return count;
445 }
446 return 0;
447 }
448
449 static ssize_t mpc85xx_l2_inject_data_lo_store(struct edac_device_ctl_info
450 *edac_dev, const char *data,
451 size_t count)
452 {
453 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
454 if (isdigit(*data)) {
455 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJLO,
456 simple_strtoul(data, NULL, 0));
457 return count;
458 }
459 return 0;
460 }
461
462 static ssize_t mpc85xx_l2_inject_ctrl_store(struct edac_device_ctl_info
463 *edac_dev, const char *data,
464 size_t count)
465 {
466 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
467 if (isdigit(*data)) {
468 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINJCTL,
469 simple_strtoul(data, NULL, 0));
470 return count;
471 }
472 return 0;
473 }
474
475 static struct edac_dev_sysfs_attribute mpc85xx_l2_sysfs_attributes[] = {
476 {
477 .attr = {
478 .name = "inject_data_hi",
479 .mode = (S_IRUGO | S_IWUSR)
480 },
481 .show = mpc85xx_l2_inject_data_hi_show,
482 .store = mpc85xx_l2_inject_data_hi_store},
483 {
484 .attr = {
485 .name = "inject_data_lo",
486 .mode = (S_IRUGO | S_IWUSR)
487 },
488 .show = mpc85xx_l2_inject_data_lo_show,
489 .store = mpc85xx_l2_inject_data_lo_store},
490 {
491 .attr = {
492 .name = "inject_ctrl",
493 .mode = (S_IRUGO | S_IWUSR)
494 },
495 .show = mpc85xx_l2_inject_ctrl_show,
496 .store = mpc85xx_l2_inject_ctrl_store},
497
498 /* End of list */
499 {
500 .attr = {.name = NULL}
501 }
502 };
503
504 static void mpc85xx_set_l2_sysfs_attributes(struct edac_device_ctl_info
505 *edac_dev)
506 {
507 edac_dev->sysfs_attributes = mpc85xx_l2_sysfs_attributes;
508 }
509
510 /***************************** L2 ops ***********************************/
511
512 static void mpc85xx_l2_check(struct edac_device_ctl_info *edac_dev)
513 {
514 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
515 u32 err_detect;
516
517 err_detect = in_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET);
518
519 if (!(err_detect & L2_EDE_MASK))
520 return;
521
522 printk(KERN_ERR "ECC Error in CPU L2 cache\n");
523 printk(KERN_ERR "L2 Error Detect Register: 0x%08x\n", err_detect);
524 printk(KERN_ERR "L2 Error Capture Data High Register: 0x%08x\n",
525 in_be32(pdata->l2_vbase + MPC85XX_L2_CAPTDATAHI));
526 printk(KERN_ERR "L2 Error Capture Data Lo Register: 0x%08x\n",
527 in_be32(pdata->l2_vbase + MPC85XX_L2_CAPTDATALO));
528 printk(KERN_ERR "L2 Error Syndrome Register: 0x%08x\n",
529 in_be32(pdata->l2_vbase + MPC85XX_L2_CAPTECC));
530 printk(KERN_ERR "L2 Error Attributes Capture Register: 0x%08x\n",
531 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRATTR));
532 printk(KERN_ERR "L2 Error Address Capture Register: 0x%08x\n",
533 in_be32(pdata->l2_vbase + MPC85XX_L2_ERRADDR));
534
535 /* clear error detect register */
536 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET, err_detect);
537
538 if (err_detect & L2_EDE_CE_MASK)
539 edac_device_handle_ce(edac_dev, 0, 0, edac_dev->ctl_name);
540
541 if (err_detect & L2_EDE_UE_MASK)
542 edac_device_handle_ue(edac_dev, 0, 0, edac_dev->ctl_name);
543 }
544
545 static irqreturn_t mpc85xx_l2_isr(int irq, void *dev_id)
546 {
547 struct edac_device_ctl_info *edac_dev = dev_id;
548 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
549 u32 err_detect;
550
551 err_detect = in_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET);
552
553 if (!(err_detect & L2_EDE_MASK))
554 return IRQ_NONE;
555
556 mpc85xx_l2_check(edac_dev);
557
558 return IRQ_HANDLED;
559 }
560
561 static int mpc85xx_l2_err_probe(struct platform_device *op)
562 {
563 struct edac_device_ctl_info *edac_dev;
564 struct mpc85xx_l2_pdata *pdata;
565 struct resource r;
566 int res;
567
568 if (!devres_open_group(&op->dev, mpc85xx_l2_err_probe, GFP_KERNEL))
569 return -ENOMEM;
570
571 edac_dev = edac_device_alloc_ctl_info(sizeof(*pdata),
572 "cpu", 1, "L", 1, 2, NULL, 0,
573 edac_dev_idx);
574 if (!edac_dev) {
575 devres_release_group(&op->dev, mpc85xx_l2_err_probe);
576 return -ENOMEM;
577 }
578
579 pdata = edac_dev->pvt_info;
580 pdata->name = "mpc85xx_l2_err";
581 pdata->irq = NO_IRQ;
582 edac_dev->dev = &op->dev;
583 dev_set_drvdata(edac_dev->dev, edac_dev);
584 edac_dev->ctl_name = pdata->name;
585 edac_dev->dev_name = pdata->name;
586
587 res = of_address_to_resource(op->dev.of_node, 0, &r);
588 if (res) {
589 printk(KERN_ERR "%s: Unable to get resource for "
590 "L2 err regs\n", __func__);
591 goto err;
592 }
593
594 /* we only need the error registers */
595 r.start += 0xe00;
596
597 if (!devm_request_mem_region(&op->dev, r.start, resource_size(&r),
598 pdata->name)) {
599 printk(KERN_ERR "%s: Error while requesting mem region\n",
600 __func__);
601 res = -EBUSY;
602 goto err;
603 }
604
605 pdata->l2_vbase = devm_ioremap(&op->dev, r.start, resource_size(&r));
606 if (!pdata->l2_vbase) {
607 printk(KERN_ERR "%s: Unable to setup L2 err regs\n", __func__);
608 res = -ENOMEM;
609 goto err;
610 }
611
612 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDET, ~0);
613
614 orig_l2_err_disable = in_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS);
615
616 /* clear the err_dis */
617 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS, 0);
618
619 edac_dev->mod_name = EDAC_MOD_STR;
620
621 if (edac_op_state == EDAC_OPSTATE_POLL)
622 edac_dev->edac_check = mpc85xx_l2_check;
623
624 mpc85xx_set_l2_sysfs_attributes(edac_dev);
625
626 pdata->edac_idx = edac_dev_idx++;
627
628 if (edac_device_add_device(edac_dev) > 0) {
629 edac_dbg(3, "failed edac_device_add_device()\n");
630 goto err;
631 }
632
633 if (edac_op_state == EDAC_OPSTATE_INT) {
634 pdata->irq = irq_of_parse_and_map(op->dev.of_node, 0);
635 res = devm_request_irq(&op->dev, pdata->irq,
636 mpc85xx_l2_isr, IRQF_DISABLED,
637 "[EDAC] L2 err", edac_dev);
638 if (res < 0) {
639 printk(KERN_ERR
640 "%s: Unable to request irq %d for "
641 "MPC85xx L2 err\n", __func__, pdata->irq);
642 irq_dispose_mapping(pdata->irq);
643 res = -ENODEV;
644 goto err2;
645 }
646
647 printk(KERN_INFO EDAC_MOD_STR " acquired irq %d for L2 Err\n",
648 pdata->irq);
649
650 edac_dev->op_state = OP_RUNNING_INTERRUPT;
651
652 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINTEN, L2_EIE_MASK);
653 }
654
655 devres_remove_group(&op->dev, mpc85xx_l2_err_probe);
656
657 edac_dbg(3, "success\n");
658 printk(KERN_INFO EDAC_MOD_STR " L2 err registered\n");
659
660 return 0;
661
662 err2:
663 edac_device_del_device(&op->dev);
664 err:
665 devres_release_group(&op->dev, mpc85xx_l2_err_probe);
666 edac_device_free_ctl_info(edac_dev);
667 return res;
668 }
669
670 static int mpc85xx_l2_err_remove(struct platform_device *op)
671 {
672 struct edac_device_ctl_info *edac_dev = dev_get_drvdata(&op->dev);
673 struct mpc85xx_l2_pdata *pdata = edac_dev->pvt_info;
674
675 edac_dbg(0, "\n");
676
677 if (edac_op_state == EDAC_OPSTATE_INT) {
678 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRINTEN, 0);
679 irq_dispose_mapping(pdata->irq);
680 }
681
682 out_be32(pdata->l2_vbase + MPC85XX_L2_ERRDIS, orig_l2_err_disable);
683 edac_device_del_device(&op->dev);
684 edac_device_free_ctl_info(edac_dev);
685 return 0;
686 }
687
688 static struct of_device_id mpc85xx_l2_err_of_match[] = {
689 /* deprecate the fsl,85.. forms in the future, 2.6.30? */
690 { .compatible = "fsl,8540-l2-cache-controller", },
691 { .compatible = "fsl,8541-l2-cache-controller", },
692 { .compatible = "fsl,8544-l2-cache-controller", },
693 { .compatible = "fsl,8548-l2-cache-controller", },
694 { .compatible = "fsl,8555-l2-cache-controller", },
695 { .compatible = "fsl,8568-l2-cache-controller", },
696 { .compatible = "fsl,mpc8536-l2-cache-controller", },
697 { .compatible = "fsl,mpc8540-l2-cache-controller", },
698 { .compatible = "fsl,mpc8541-l2-cache-controller", },
699 { .compatible = "fsl,mpc8544-l2-cache-controller", },
700 { .compatible = "fsl,mpc8548-l2-cache-controller", },
701 { .compatible = "fsl,mpc8555-l2-cache-controller", },
702 { .compatible = "fsl,mpc8560-l2-cache-controller", },
703 { .compatible = "fsl,mpc8568-l2-cache-controller", },
704 { .compatible = "fsl,mpc8569-l2-cache-controller", },
705 { .compatible = "fsl,mpc8572-l2-cache-controller", },
706 { .compatible = "fsl,p1020-l2-cache-controller", },
707 { .compatible = "fsl,p1021-l2-cache-controller", },
708 { .compatible = "fsl,p2020-l2-cache-controller", },
709 {},
710 };
711 MODULE_DEVICE_TABLE(of, mpc85xx_l2_err_of_match);
712
713 static struct platform_driver mpc85xx_l2_err_driver = {
714 .probe = mpc85xx_l2_err_probe,
715 .remove = mpc85xx_l2_err_remove,
716 .driver = {
717 .name = "mpc85xx_l2_err",
718 .owner = THIS_MODULE,
719 .of_match_table = mpc85xx_l2_err_of_match,
720 },
721 };
722
723 /**************************** MC Err device ***************************/
724
725 /*
726 * Taken from table 8-55 in the MPC8641 User's Manual and/or 9-61 in the
727 * MPC8572 User's Manual. Each line represents a syndrome bit column as a
728 * 64-bit value, but split into an upper and lower 32-bit chunk. The labels
729 * below correspond to Freescale's manuals.
730 */
731 static unsigned int ecc_table[16] = {
732 /* MSB LSB */
733 /* [0:31] [32:63] */
734 0xf00fe11e, 0xc33c0ff7, /* Syndrome bit 7 */
735 0x00ff00ff, 0x00fff0ff,
736 0x0f0f0f0f, 0x0f0fff00,
737 0x11113333, 0x7777000f,
738 0x22224444, 0x8888222f,
739 0x44448888, 0xffff4441,
740 0x8888ffff, 0x11118882,
741 0xffff1111, 0x22221114, /* Syndrome bit 0 */
742 };
743
744 /*
745 * Calculate the correct ECC value for a 64-bit value specified by high:low
746 */
747 static u8 calculate_ecc(u32 high, u32 low)
748 {
749 u32 mask_low;
750 u32 mask_high;
751 int bit_cnt;
752 u8 ecc = 0;
753 int i;
754 int j;
755
756 for (i = 0; i < 8; i++) {
757 mask_high = ecc_table[i * 2];
758 mask_low = ecc_table[i * 2 + 1];
759 bit_cnt = 0;
760
761 for (j = 0; j < 32; j++) {
762 if ((mask_high >> j) & 1)
763 bit_cnt ^= (high >> j) & 1;
764 if ((mask_low >> j) & 1)
765 bit_cnt ^= (low >> j) & 1;
766 }
767
768 ecc |= bit_cnt << i;
769 }
770
771 return ecc;
772 }
773
774 /*
775 * Create the syndrome code which is generated if the data line specified by
776 * 'bit' failed. Eg generate an 8-bit codes seen in Table 8-55 in the MPC8641
777 * User's Manual and 9-61 in the MPC8572 User's Manual.
778 */
779 static u8 syndrome_from_bit(unsigned int bit) {
780 int i;
781 u8 syndrome = 0;
782
783 /*
784 * Cycle through the upper or lower 32-bit portion of each value in
785 * ecc_table depending on if 'bit' is in the upper or lower half of
786 * 64-bit data.
787 */
788 for (i = bit < 32; i < 16; i += 2)
789 syndrome |= ((ecc_table[i] >> (bit % 32)) & 1) << (i / 2);
790
791 return syndrome;
792 }
793
794 /*
795 * Decode data and ecc syndrome to determine what went wrong
796 * Note: This can only decode single-bit errors
797 */
798 static void sbe_ecc_decode(u32 cap_high, u32 cap_low, u32 cap_ecc,
799 int *bad_data_bit, int *bad_ecc_bit)
800 {
801 int i;
802 u8 syndrome;
803
804 *bad_data_bit = -1;
805 *bad_ecc_bit = -1;
806
807 /*
808 * Calculate the ECC of the captured data and XOR it with the captured
809 * ECC to find an ECC syndrome value we can search for
810 */
811 syndrome = calculate_ecc(cap_high, cap_low) ^ cap_ecc;
812
813 /* Check if a data line is stuck... */
814 for (i = 0; i < 64; i++) {
815 if (syndrome == syndrome_from_bit(i)) {
816 *bad_data_bit = i;
817 return;
818 }
819 }
820
821 /* If data is correct, check ECC bits for errors... */
822 for (i = 0; i < 8; i++) {
823 if ((syndrome >> i) & 0x1) {
824 *bad_ecc_bit = i;
825 return;
826 }
827 }
828 }
829
830 static void mpc85xx_mc_check(struct mem_ctl_info *mci)
831 {
832 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
833 struct csrow_info *csrow;
834 u32 bus_width;
835 u32 err_detect;
836 u32 syndrome;
837 u32 err_addr;
838 u32 pfn;
839 int row_index;
840 u32 cap_high;
841 u32 cap_low;
842 int bad_data_bit;
843 int bad_ecc_bit;
844
845 err_detect = in_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT);
846 if (!err_detect)
847 return;
848
849 mpc85xx_mc_printk(mci, KERN_ERR, "Err Detect Register: %#8.8x\n",
850 err_detect);
851
852 /* no more processing if not ECC bit errors */
853 if (!(err_detect & (DDR_EDE_SBE | DDR_EDE_MBE))) {
854 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT, err_detect);
855 return;
856 }
857
858 syndrome = in_be32(pdata->mc_vbase + MPC85XX_MC_CAPTURE_ECC);
859
860 /* Mask off appropriate bits of syndrome based on bus width */
861 bus_width = (in_be32(pdata->mc_vbase + MPC85XX_MC_DDR_SDRAM_CFG) &
862 DSC_DBW_MASK) ? 32 : 64;
863 if (bus_width == 64)
864 syndrome &= 0xff;
865 else
866 syndrome &= 0xffff;
867
868 err_addr = in_be32(pdata->mc_vbase + MPC85XX_MC_CAPTURE_ADDRESS);
869 pfn = err_addr >> PAGE_SHIFT;
870
871 for (row_index = 0; row_index < mci->nr_csrows; row_index++) {
872 csrow = mci->csrows[row_index];
873 if ((pfn >= csrow->first_page) && (pfn <= csrow->last_page))
874 break;
875 }
876
877 cap_high = in_be32(pdata->mc_vbase + MPC85XX_MC_CAPTURE_DATA_HI);
878 cap_low = in_be32(pdata->mc_vbase + MPC85XX_MC_CAPTURE_DATA_LO);
879
880 /*
881 * Analyze single-bit errors on 64-bit wide buses
882 * TODO: Add support for 32-bit wide buses
883 */
884 if ((err_detect & DDR_EDE_SBE) && (bus_width == 64)) {
885 sbe_ecc_decode(cap_high, cap_low, syndrome,
886 &bad_data_bit, &bad_ecc_bit);
887
888 if (bad_data_bit != -1)
889 mpc85xx_mc_printk(mci, KERN_ERR,
890 "Faulty Data bit: %d\n", bad_data_bit);
891 if (bad_ecc_bit != -1)
892 mpc85xx_mc_printk(mci, KERN_ERR,
893 "Faulty ECC bit: %d\n", bad_ecc_bit);
894
895 mpc85xx_mc_printk(mci, KERN_ERR,
896 "Expected Data / ECC:\t%#8.8x_%08x / %#2.2x\n",
897 cap_high ^ (1 << (bad_data_bit - 32)),
898 cap_low ^ (1 << bad_data_bit),
899 syndrome ^ (1 << bad_ecc_bit));
900 }
901
902 mpc85xx_mc_printk(mci, KERN_ERR,
903 "Captured Data / ECC:\t%#8.8x_%08x / %#2.2x\n",
904 cap_high, cap_low, syndrome);
905 mpc85xx_mc_printk(mci, KERN_ERR, "Err addr: %#8.8x\n", err_addr);
906 mpc85xx_mc_printk(mci, KERN_ERR, "PFN: %#8.8x\n", pfn);
907
908 /* we are out of range */
909 if (row_index == mci->nr_csrows)
910 mpc85xx_mc_printk(mci, KERN_ERR, "PFN out of range!\n");
911
912 if (err_detect & DDR_EDE_SBE)
913 edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1,
914 pfn, err_addr & ~PAGE_MASK, syndrome,
915 row_index, 0, -1,
916 mci->ctl_name, "");
917
918 if (err_detect & DDR_EDE_MBE)
919 edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1,
920 pfn, err_addr & ~PAGE_MASK, syndrome,
921 row_index, 0, -1,
922 mci->ctl_name, "");
923
924 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT, err_detect);
925 }
926
927 static irqreturn_t mpc85xx_mc_isr(int irq, void *dev_id)
928 {
929 struct mem_ctl_info *mci = dev_id;
930 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
931 u32 err_detect;
932
933 err_detect = in_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT);
934 if (!err_detect)
935 return IRQ_NONE;
936
937 mpc85xx_mc_check(mci);
938
939 return IRQ_HANDLED;
940 }
941
942 static void mpc85xx_init_csrows(struct mem_ctl_info *mci)
943 {
944 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
945 struct csrow_info *csrow;
946 struct dimm_info *dimm;
947 u32 sdram_ctl;
948 u32 sdtype;
949 enum mem_type mtype;
950 u32 cs_bnds;
951 int index;
952
953 sdram_ctl = in_be32(pdata->mc_vbase + MPC85XX_MC_DDR_SDRAM_CFG);
954
955 sdtype = sdram_ctl & DSC_SDTYPE_MASK;
956 if (sdram_ctl & DSC_RD_EN) {
957 switch (sdtype) {
958 case DSC_SDTYPE_DDR:
959 mtype = MEM_RDDR;
960 break;
961 case DSC_SDTYPE_DDR2:
962 mtype = MEM_RDDR2;
963 break;
964 case DSC_SDTYPE_DDR3:
965 mtype = MEM_RDDR3;
966 break;
967 default:
968 mtype = MEM_UNKNOWN;
969 break;
970 }
971 } else {
972 switch (sdtype) {
973 case DSC_SDTYPE_DDR:
974 mtype = MEM_DDR;
975 break;
976 case DSC_SDTYPE_DDR2:
977 mtype = MEM_DDR2;
978 break;
979 case DSC_SDTYPE_DDR3:
980 mtype = MEM_DDR3;
981 break;
982 default:
983 mtype = MEM_UNKNOWN;
984 break;
985 }
986 }
987
988 for (index = 0; index < mci->nr_csrows; index++) {
989 u32 start;
990 u32 end;
991
992 csrow = mci->csrows[index];
993 dimm = csrow->channels[0]->dimm;
994
995 cs_bnds = in_be32(pdata->mc_vbase + MPC85XX_MC_CS_BNDS_0 +
996 (index * MPC85XX_MC_CS_BNDS_OFS));
997
998 start = (cs_bnds & 0xffff0000) >> 16;
999 end = (cs_bnds & 0x0000ffff);
1000
1001 if (start == end)
1002 continue; /* not populated */
1003
1004 start <<= (24 - PAGE_SHIFT);
1005 end <<= (24 - PAGE_SHIFT);
1006 end |= (1 << (24 - PAGE_SHIFT)) - 1;
1007
1008 csrow->first_page = start;
1009 csrow->last_page = end;
1010
1011 dimm->nr_pages = end + 1 - start;
1012 dimm->grain = 8;
1013 dimm->mtype = mtype;
1014 dimm->dtype = DEV_UNKNOWN;
1015 if (sdram_ctl & DSC_X32_EN)
1016 dimm->dtype = DEV_X32;
1017 dimm->edac_mode = EDAC_SECDED;
1018 }
1019 }
1020
1021 static int mpc85xx_mc_err_probe(struct platform_device *op)
1022 {
1023 struct mem_ctl_info *mci;
1024 struct edac_mc_layer layers[2];
1025 struct mpc85xx_mc_pdata *pdata;
1026 struct resource r;
1027 u32 sdram_ctl;
1028 int res;
1029
1030 if (!devres_open_group(&op->dev, mpc85xx_mc_err_probe, GFP_KERNEL))
1031 return -ENOMEM;
1032
1033 layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
1034 layers[0].size = 4;
1035 layers[0].is_virt_csrow = true;
1036 layers[1].type = EDAC_MC_LAYER_CHANNEL;
1037 layers[1].size = 1;
1038 layers[1].is_virt_csrow = false;
1039 mci = edac_mc_alloc(edac_mc_idx, ARRAY_SIZE(layers), layers,
1040 sizeof(*pdata));
1041 if (!mci) {
1042 devres_release_group(&op->dev, mpc85xx_mc_err_probe);
1043 return -ENOMEM;
1044 }
1045
1046 pdata = mci->pvt_info;
1047 pdata->name = "mpc85xx_mc_err";
1048 pdata->irq = NO_IRQ;
1049 mci->pdev = &op->dev;
1050 pdata->edac_idx = edac_mc_idx++;
1051 dev_set_drvdata(mci->pdev, mci);
1052 mci->ctl_name = pdata->name;
1053 mci->dev_name = pdata->name;
1054
1055 res = of_address_to_resource(op->dev.of_node, 0, &r);
1056 if (res) {
1057 printk(KERN_ERR "%s: Unable to get resource for MC err regs\n",
1058 __func__);
1059 goto err;
1060 }
1061
1062 if (!devm_request_mem_region(&op->dev, r.start, resource_size(&r),
1063 pdata->name)) {
1064 printk(KERN_ERR "%s: Error while requesting mem region\n",
1065 __func__);
1066 res = -EBUSY;
1067 goto err;
1068 }
1069
1070 pdata->mc_vbase = devm_ioremap(&op->dev, r.start, resource_size(&r));
1071 if (!pdata->mc_vbase) {
1072 printk(KERN_ERR "%s: Unable to setup MC err regs\n", __func__);
1073 res = -ENOMEM;
1074 goto err;
1075 }
1076
1077 sdram_ctl = in_be32(pdata->mc_vbase + MPC85XX_MC_DDR_SDRAM_CFG);
1078 if (!(sdram_ctl & DSC_ECC_EN)) {
1079 /* no ECC */
1080 printk(KERN_WARNING "%s: No ECC DIMMs discovered\n", __func__);
1081 res = -ENODEV;
1082 goto err;
1083 }
1084
1085 edac_dbg(3, "init mci\n");
1086 mci->mtype_cap = MEM_FLAG_RDDR | MEM_FLAG_RDDR2 |
1087 MEM_FLAG_DDR | MEM_FLAG_DDR2;
1088 mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
1089 mci->edac_cap = EDAC_FLAG_SECDED;
1090 mci->mod_name = EDAC_MOD_STR;
1091 mci->mod_ver = MPC85XX_REVISION;
1092
1093 if (edac_op_state == EDAC_OPSTATE_POLL)
1094 mci->edac_check = mpc85xx_mc_check;
1095
1096 mci->ctl_page_to_phys = NULL;
1097
1098 mci->scrub_mode = SCRUB_SW_SRC;
1099
1100 mpc85xx_init_csrows(mci);
1101
1102 /* store the original error disable bits */
1103 orig_ddr_err_disable =
1104 in_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DISABLE);
1105 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DISABLE, 0);
1106
1107 /* clear all error bits */
1108 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DETECT, ~0);
1109
1110 if (edac_mc_add_mc(mci)) {
1111 edac_dbg(3, "failed edac_mc_add_mc()\n");
1112 goto err;
1113 }
1114
1115 if (mpc85xx_create_sysfs_attributes(mci)) {
1116 edac_mc_del_mc(mci->pdev);
1117 edac_dbg(3, "failed edac_mc_add_mc()\n");
1118 goto err;
1119 }
1120
1121 if (edac_op_state == EDAC_OPSTATE_INT) {
1122 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_INT_EN,
1123 DDR_EIE_MBEE | DDR_EIE_SBEE);
1124
1125 /* store the original error management threshold */
1126 orig_ddr_err_sbe = in_be32(pdata->mc_vbase +
1127 MPC85XX_MC_ERR_SBE) & 0xff0000;
1128
1129 /* set threshold to 1 error per interrupt */
1130 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_SBE, 0x10000);
1131
1132 /* register interrupts */
1133 pdata->irq = irq_of_parse_and_map(op->dev.of_node, 0);
1134 res = devm_request_irq(&op->dev, pdata->irq,
1135 mpc85xx_mc_isr,
1136 IRQF_DISABLED | IRQF_SHARED,
1137 "[EDAC] MC err", mci);
1138 if (res < 0) {
1139 printk(KERN_ERR "%s: Unable to request irq %d for "
1140 "MPC85xx DRAM ERR\n", __func__, pdata->irq);
1141 irq_dispose_mapping(pdata->irq);
1142 res = -ENODEV;
1143 goto err2;
1144 }
1145
1146 printk(KERN_INFO EDAC_MOD_STR " acquired irq %d for MC\n",
1147 pdata->irq);
1148 }
1149
1150 devres_remove_group(&op->dev, mpc85xx_mc_err_probe);
1151 edac_dbg(3, "success\n");
1152 printk(KERN_INFO EDAC_MOD_STR " MC err registered\n");
1153
1154 return 0;
1155
1156 err2:
1157 edac_mc_del_mc(&op->dev);
1158 err:
1159 devres_release_group(&op->dev, mpc85xx_mc_err_probe);
1160 edac_mc_free(mci);
1161 return res;
1162 }
1163
1164 static int mpc85xx_mc_err_remove(struct platform_device *op)
1165 {
1166 struct mem_ctl_info *mci = dev_get_drvdata(&op->dev);
1167 struct mpc85xx_mc_pdata *pdata = mci->pvt_info;
1168
1169 edac_dbg(0, "\n");
1170
1171 if (edac_op_state == EDAC_OPSTATE_INT) {
1172 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_INT_EN, 0);
1173 irq_dispose_mapping(pdata->irq);
1174 }
1175
1176 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_DISABLE,
1177 orig_ddr_err_disable);
1178 out_be32(pdata->mc_vbase + MPC85XX_MC_ERR_SBE, orig_ddr_err_sbe);
1179
1180 mpc85xx_remove_sysfs_attributes(mci);
1181 edac_mc_del_mc(&op->dev);
1182 edac_mc_free(mci);
1183 return 0;
1184 }
1185
1186 static struct of_device_id mpc85xx_mc_err_of_match[] = {
1187 /* deprecate the fsl,85.. forms in the future, 2.6.30? */
1188 { .compatible = "fsl,8540-memory-controller", },
1189 { .compatible = "fsl,8541-memory-controller", },
1190 { .compatible = "fsl,8544-memory-controller", },
1191 { .compatible = "fsl,8548-memory-controller", },
1192 { .compatible = "fsl,8555-memory-controller", },
1193 { .compatible = "fsl,8568-memory-controller", },
1194 { .compatible = "fsl,mpc8536-memory-controller", },
1195 { .compatible = "fsl,mpc8540-memory-controller", },
1196 { .compatible = "fsl,mpc8541-memory-controller", },
1197 { .compatible = "fsl,mpc8544-memory-controller", },
1198 { .compatible = "fsl,mpc8548-memory-controller", },
1199 { .compatible = "fsl,mpc8555-memory-controller", },
1200 { .compatible = "fsl,mpc8560-memory-controller", },
1201 { .compatible = "fsl,mpc8568-memory-controller", },
1202 { .compatible = "fsl,mpc8569-memory-controller", },
1203 { .compatible = "fsl,mpc8572-memory-controller", },
1204 { .compatible = "fsl,mpc8349-memory-controller", },
1205 { .compatible = "fsl,p1020-memory-controller", },
1206 { .compatible = "fsl,p1021-memory-controller", },
1207 { .compatible = "fsl,p2020-memory-controller", },
1208 { .compatible = "fsl,qoriq-memory-controller", },
1209 {},
1210 };
1211 MODULE_DEVICE_TABLE(of, mpc85xx_mc_err_of_match);
1212
1213 static struct platform_driver mpc85xx_mc_err_driver = {
1214 .probe = mpc85xx_mc_err_probe,
1215 .remove = mpc85xx_mc_err_remove,
1216 .driver = {
1217 .name = "mpc85xx_mc_err",
1218 .owner = THIS_MODULE,
1219 .of_match_table = mpc85xx_mc_err_of_match,
1220 },
1221 };
1222
1223 #ifdef CONFIG_FSL_SOC_BOOKE
1224 static void __init mpc85xx_mc_clear_rfxe(void *data)
1225 {
1226 orig_hid1[smp_processor_id()] = mfspr(SPRN_HID1);
1227 mtspr(SPRN_HID1, (orig_hid1[smp_processor_id()] & ~HID1_RFXE));
1228 }
1229 #endif
1230
1231 static int __init mpc85xx_mc_init(void)
1232 {
1233 int res = 0;
1234 u32 pvr = 0;
1235
1236 printk(KERN_INFO "Freescale(R) MPC85xx EDAC driver, "
1237 "(C) 2006 Montavista Software\n");
1238
1239 /* make sure error reporting method is sane */
1240 switch (edac_op_state) {
1241 case EDAC_OPSTATE_POLL:
1242 case EDAC_OPSTATE_INT:
1243 break;
1244 default:
1245 edac_op_state = EDAC_OPSTATE_INT;
1246 break;
1247 }
1248
1249 res = platform_driver_register(&mpc85xx_mc_err_driver);
1250 if (res)
1251 printk(KERN_WARNING EDAC_MOD_STR "MC fails to register\n");
1252
1253 res = platform_driver_register(&mpc85xx_l2_err_driver);
1254 if (res)
1255 printk(KERN_WARNING EDAC_MOD_STR "L2 fails to register\n");
1256
1257 #ifdef CONFIG_FSL_SOC_BOOKE
1258 pvr = mfspr(SPRN_PVR);
1259
1260 if ((PVR_VER(pvr) == PVR_VER_E500V1) ||
1261 (PVR_VER(pvr) == PVR_VER_E500V2)) {
1262 /*
1263 * need to clear HID1[RFXE] to disable machine check int
1264 * so we can catch it
1265 */
1266 if (edac_op_state == EDAC_OPSTATE_INT)
1267 on_each_cpu(mpc85xx_mc_clear_rfxe, NULL, 0);
1268 }
1269 #endif
1270
1271 return 0;
1272 }
1273
1274 module_init(mpc85xx_mc_init);
1275
1276 #ifdef CONFIG_FSL_SOC_BOOKE
1277 static void __exit mpc85xx_mc_restore_hid1(void *data)
1278 {
1279 mtspr(SPRN_HID1, orig_hid1[smp_processor_id()]);
1280 }
1281 #endif
1282
1283 static void __exit mpc85xx_mc_exit(void)
1284 {
1285 #ifdef CONFIG_FSL_SOC_BOOKE
1286 u32 pvr = mfspr(SPRN_PVR);
1287
1288 if ((PVR_VER(pvr) == PVR_VER_E500V1) ||
1289 (PVR_VER(pvr) == PVR_VER_E500V2)) {
1290 on_each_cpu(mpc85xx_mc_restore_hid1, NULL, 0);
1291 }
1292 #endif
1293 platform_driver_unregister(&mpc85xx_l2_err_driver);
1294 platform_driver_unregister(&mpc85xx_mc_err_driver);
1295 }
1296
1297 module_exit(mpc85xx_mc_exit);
1298
1299 MODULE_LICENSE("GPL");
1300 MODULE_AUTHOR("Montavista Software, Inc.");
1301 module_param(edac_op_state, int, 0444);
1302 MODULE_PARM_DESC(edac_op_state,
1303 "EDAC Error Reporting state: 0=Poll, 2=Interrupt");
Linux with added FPC-III support