]> git.proxmox.com Git - mirror_ubuntu-zesty-kernel.git/blame - drivers/edac/altera_edac.c
projects / mirror_ubuntu-zesty-kernel.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
KVM: arm64: vgic-v3: Add ICV_IAR1_EL1 handler
[mirror_ubuntu-zesty-kernel.git] / drivers / edac / altera_edac.c
CommitLineData
71bcada8 1/*
c3eea194 2 * Copyright Altera Corporation (C) 2014-2016. All rights reserved.
71bcada8
TT		 3 * Copyright 2011-2012 Calxeda, Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
16 *
17 * Adapted from the highbank_mc_edac driver.
18 */
19
c3eea194 20#include <asm/cacheflush.h>
71bcada8 21#include <linux/ctype.h>
1166fde9 22#include <linux/delay.h>
71bcada8 23#include <linux/edac.h>
c3eea194 24#include <linux/genalloc.h>
71bcada8 25#include <linux/interrupt.h>
13ab8448 26#include <linux/irqchip/chained_irq.h>
71bcada8
TT		 27#include <linux/kernel.h>
28#include <linux/mfd/syscon.h>
588cb03e 29#include <linux/of_address.h>
13ab8448 30#include <linux/of_irq.h>
71bcada8
TT		 31#include <linux/of_platform.h>
32#include <linux/platform_device.h>
33#include <linux/regmap.h>
34#include <linux/types.h>
35#include <linux/uaccess.h>
36
143f4a5a 37#include "altera_edac.h"
71bcada8
TT		 38#include "edac_module.h"
39
40#define EDAC_MOD_STR "altera_edac"
41#define EDAC_VERSION "1"
c3eea194 42#define EDAC_DEVICE "Altera"
71bcada8 43
143f4a5a
TT		 44static const struct altr_sdram_prv_data c5_data = {
45 .ecc_ctrl_offset = CV_CTLCFG_OFST,
46 .ecc_ctl_en_mask = CV_CTLCFG_ECC_AUTO_EN,
47 .ecc_stat_offset = CV_DRAMSTS_OFST,
48 .ecc_stat_ce_mask = CV_DRAMSTS_SBEERR,
49 .ecc_stat_ue_mask = CV_DRAMSTS_DBEERR,
50 .ecc_saddr_offset = CV_ERRADDR_OFST,
73bcc942 51 .ecc_daddr_offset = CV_ERRADDR_OFST,
143f4a5a
TT		 52 .ecc_cecnt_offset = CV_SBECOUNT_OFST,
53 .ecc_uecnt_offset = CV_DBECOUNT_OFST,
54 .ecc_irq_en_offset = CV_DRAMINTR_OFST,
55 .ecc_irq_en_mask = CV_DRAMINTR_INTREN,
56 .ecc_irq_clr_offset = CV_DRAMINTR_OFST,
57 .ecc_irq_clr_mask = (CV_DRAMINTR_INTRCLR | CV_DRAMINTR_INTREN),
58 .ecc_cnt_rst_offset = CV_DRAMINTR_OFST,
59 .ecc_cnt_rst_mask = CV_DRAMINTR_INTRCLR,
143f4a5a
TT		 60 .ce_ue_trgr_offset = CV_CTLCFG_OFST,
61 .ce_set_mask = CV_CTLCFG_GEN_SB_ERR,
62 .ue_set_mask = CV_CTLCFG_GEN_DB_ERR,
71bcada8
TT		 63};
64
73bcc942
TT		 65static const struct altr_sdram_prv_data a10_data = {
66 .ecc_ctrl_offset = A10_ECCCTRL1_OFST,
67 .ecc_ctl_en_mask = A10_ECCCTRL1_ECC_EN,
68 .ecc_stat_offset = A10_INTSTAT_OFST,
69 .ecc_stat_ce_mask = A10_INTSTAT_SBEERR,
70 .ecc_stat_ue_mask = A10_INTSTAT_DBEERR,
71 .ecc_saddr_offset = A10_SERRADDR_OFST,
72 .ecc_daddr_offset = A10_DERRADDR_OFST,
73 .ecc_irq_en_offset = A10_ERRINTEN_OFST,
74 .ecc_irq_en_mask = A10_ECC_IRQ_EN_MASK,
75 .ecc_irq_clr_offset = A10_INTSTAT_OFST,
76 .ecc_irq_clr_mask = (A10_INTSTAT_SBEERR | A10_INTSTAT_DBEERR),
77 .ecc_cnt_rst_offset = A10_ECCCTRL1_OFST,
78 .ecc_cnt_rst_mask = A10_ECC_CNT_RESET_MASK,
73bcc942
TT		 79 .ce_ue_trgr_offset = A10_DIAGINTTEST_OFST,
80 .ce_set_mask = A10_DIAGINT_TSERRA_MASK,
81 .ue_set_mask = A10_DIAGINT_TDERRA_MASK,
73bcc942
TT		 82};
83
c3eea194
TT		 84/*********************** EDAC Memory Controller Functions ****************/
85
86/* The SDRAM controller uses the EDAC Memory Controller framework. */
87
71bcada8
TT		 88static irqreturn_t altr_sdram_mc_err_handler(int irq, void *dev_id)
89{
90 struct mem_ctl_info *mci = dev_id;
91 struct altr_sdram_mc_data *drvdata = mci->pvt_info;
143f4a5a 92 const struct altr_sdram_prv_data *priv = drvdata->data;
73bcc942 93 u32 status, err_count = 1, err_addr;
71bcada8 94
143f4a5a 95 regmap_read(drvdata->mc_vbase, priv->ecc_stat_offset, &status);
71bcada8 96
143f4a5a 97 if (status & priv->ecc_stat_ue_mask) {
73bcc942
TT		 98 regmap_read(drvdata->mc_vbase, priv->ecc_daddr_offset,
99 &err_addr);
100 if (priv->ecc_uecnt_offset)
101 regmap_read(drvdata->mc_vbase, priv->ecc_uecnt_offset,
102 &err_count);
71bcada8
TT		 103 panic("\nEDAC: [%d Uncorrectable errors @ 0x%08X]\n",
104 err_count, err_addr);
105 }
143f4a5a 106 if (status & priv->ecc_stat_ce_mask) {
73bcc942
TT		 107 regmap_read(drvdata->mc_vbase, priv->ecc_saddr_offset,
108 &err_addr);
109 if (priv->ecc_uecnt_offset)
110 regmap_read(drvdata->mc_vbase, priv->ecc_cecnt_offset,
111 &err_count);
71bcada8
TT		 112 edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, err_count,
113 err_addr >> PAGE_SHIFT,
114 err_addr & ~PAGE_MASK, 0,
115 0, 0, -1, mci->ctl_name, "");
73bcc942
TT		 116 /* Clear IRQ to resume */
117 regmap_write(drvdata->mc_vbase, priv->ecc_irq_clr_offset,
118 priv->ecc_irq_clr_mask);
71bcada8 119
73bcc942
TT		 120 return IRQ_HANDLED;
121 }
122 return IRQ_NONE;
71bcada8
TT		 123}
124
71bcada8
TT		 125static ssize_t altr_sdr_mc_err_inject_write(struct file *file,
126 const char __user *data,
127 size_t count, loff_t *ppos)
128{
129 struct mem_ctl_info *mci = file->private_data;
130 struct altr_sdram_mc_data *drvdata = mci->pvt_info;
143f4a5a 131 const struct altr_sdram_prv_data *priv = drvdata->data;
71bcada8
TT		 132 u32 *ptemp;
133 dma_addr_t dma_handle;
134 u32 reg, read_reg;
135
136 ptemp = dma_alloc_coherent(mci->pdev, 16, &dma_handle, GFP_KERNEL);
137 if (!ptemp) {
138 dma_free_coherent(mci->pdev, 16, ptemp, dma_handle);
139 edac_printk(KERN_ERR, EDAC_MC,
140 "Inject: Buffer Allocation error\n");
141 return -ENOMEM;
142 }
143
143f4a5a
TT		 144 regmap_read(drvdata->mc_vbase, priv->ce_ue_trgr_offset,
145 &read_reg);
146 read_reg &= ~(priv->ce_set_mask | priv->ue_set_mask);
71bcada8
TT		 147
148 /* Error are injected by writing a word while the SBE or DBE
149 * bit in the CTLCFG register is set. Reading the word will
150 * trigger the SBE or DBE error and the corresponding IRQ.
151 */
152 if (count == 3) {
153 edac_printk(KERN_ALERT, EDAC_MC,
154 "Inject Double bit error\n");
90e493d7 155 local_irq_disable();
143f4a5a
TT		 156 regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset,
157 (read_reg | priv->ue_set_mask));
90e493d7 158 local_irq_enable();
71bcada8
TT		 159 } else {
160 edac_printk(KERN_ALERT, EDAC_MC,
161 "Inject Single bit error\n");
90e493d7 162 local_irq_disable();
143f4a5a
TT		 163 regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset,
164 (read_reg | priv->ce_set_mask));
90e493d7 165 local_irq_enable();
71bcada8
TT		 166 }
167
168 ptemp[0] = 0x5A5A5A5A;
169 ptemp[1] = 0xA5A5A5A5;
170
171 /* Clear the error injection bits */
143f4a5a 172 regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset, read_reg);
71bcada8
TT		 173 /* Ensure it has been written out */
174 wmb();
175
176 /*
177 * To trigger the error, we need to read the data back
178 * (the data was written with errors above).
179 * The ACCESS_ONCE macros and printk are used to prevent the
180 * the compiler optimizing these reads out.
181 */
182 reg = ACCESS_ONCE(ptemp[0]);
183 read_reg = ACCESS_ONCE(ptemp[1]);
184 /* Force Read */
185 rmb();
186
187 edac_printk(KERN_ALERT, EDAC_MC, "Read Data [0x%X, 0x%X]\n",
188 reg, read_reg);
189
190 dma_free_coherent(mci->pdev, 16, ptemp, dma_handle);
191
192 return count;
193}
194
195static const struct file_operations altr_sdr_mc_debug_inject_fops = {
196 .open = simple_open,
197 .write = altr_sdr_mc_err_inject_write,
198 .llseek = generic_file_llseek,
199};
200
201static void altr_sdr_mc_create_debugfs_nodes(struct mem_ctl_info *mci)
202{
bba3b31e
BP		 203 if (!IS_ENABLED(CONFIG_EDAC_DEBUG))
204 return;
205
206 if (!mci->debugfs)
207 return;
208
b8978bad 209 edac_debugfs_create_file("altr_trigger", S_IWUSR, mci->debugfs, mci,
bba3b31e 210 &altr_sdr_mc_debug_inject_fops);
71bcada8 211}
71bcada8 212
f9ae487e
TT		 213/* Get total memory size from Open Firmware DTB */
214static unsigned long get_total_mem(void)
71bcada8 215{
f9ae487e
TT		 216 struct device_node *np = NULL;
217 const unsigned int *reg, *reg_end;
218 int len, sw, aw;
219 unsigned long start, size, total_mem = 0;
220
221 for_each_node_by_type(np, "memory") {
222 aw = of_n_addr_cells(np);
223 sw = of_n_size_cells(np);
224 reg = (const unsigned int *)of_get_property(np, "reg", &len);
225 reg_end = reg + (len / sizeof(u32));
226
227 total_mem = 0;
228 do {
229 start = of_read_number(reg, aw);
230 reg += aw;
231 size = of_read_number(reg, sw);
232 reg += sw;
233 total_mem += size;
234 } while (reg < reg_end);
235 }
236 edac_dbg(0, "total_mem 0x%lx\n", total_mem);
237 return total_mem;
71bcada8
TT		 238}
239
143f4a5a 240static const struct of_device_id altr_sdram_ctrl_of_match[] = {
2c911f6c
AB		 241 { .compatible = "altr,sdram-edac", .data = &c5_data},
242 { .compatible = "altr,sdram-edac-a10", .data = &a10_data},
143f4a5a
TT		 243 {},
244};
245MODULE_DEVICE_TABLE(of, altr_sdram_ctrl_of_match);
246
73bcc942
TT		 247static int a10_init(struct regmap *mc_vbase)
248{
249 if (regmap_update_bits(mc_vbase, A10_INTMODE_OFST,
250 A10_INTMODE_SB_INT, A10_INTMODE_SB_INT)) {
251 edac_printk(KERN_ERR, EDAC_MC,
252 "Error setting SB IRQ mode\n");
253 return -ENODEV;
254 }
255
256 if (regmap_write(mc_vbase, A10_SERRCNTREG_OFST, 1)) {
257 edac_printk(KERN_ERR, EDAC_MC,
258 "Error setting trigger count\n");
259 return -ENODEV;
260 }
261
262 return 0;
263}
264
265static int a10_unmask_irq(struct platform_device *pdev, u32 mask)
266{
267 void __iomem *sm_base;
268 int ret = 0;
269
270 if (!request_mem_region(A10_SYMAN_INTMASK_CLR, sizeof(u32),
271 dev_name(&pdev->dev))) {
272 edac_printk(KERN_ERR, EDAC_MC,
273 "Unable to request mem region\n");
274 return -EBUSY;
275 }
276
277 sm_base = ioremap(A10_SYMAN_INTMASK_CLR, sizeof(u32));
278 if (!sm_base) {
279 edac_printk(KERN_ERR, EDAC_MC,
280 "Unable to ioremap device\n");
281
282 ret = -ENOMEM;
283 goto release;
284 }
285
286 iowrite32(mask, sm_base);
287
288 iounmap(sm_base);
289
290release:
291 release_mem_region(A10_SYMAN_INTMASK_CLR, sizeof(u32));
292
293 return ret;
294}
295
71bcada8
TT		 296static int altr_sdram_probe(struct platform_device *pdev)
297{
143f4a5a 298 const struct of_device_id *id;
71bcada8
TT		 299 struct edac_mc_layer layers[2];
300 struct mem_ctl_info *mci;
301 struct altr_sdram_mc_data *drvdata;
143f4a5a 302 const struct altr_sdram_prv_data *priv;
71bcada8
TT		 303 struct regmap *mc_vbase;
304 struct dimm_info *dimm;
143f4a5a 305 u32 read_reg;
73bcc942
TT		 306 int irq, irq2, res = 0;
307 unsigned long mem_size, irqflags = 0;
143f4a5a
TT		 308
309 id = of_match_device(altr_sdram_ctrl_of_match, &pdev->dev);
310 if (!id)
311 return -ENODEV;
71bcada8 312
71bcada8
TT		 313 /* Grab the register range from the sdr controller in device tree */
314 mc_vbase = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
315 "altr,sdr-syscon");
316 if (IS_ERR(mc_vbase)) {
317 edac_printk(KERN_ERR, EDAC_MC,
318 "regmap for altr,sdr-syscon lookup failed.\n");
319 return -ENODEV;
320 }
321
143f4a5a
TT		 322 /* Check specific dependencies for the module */
323 priv = of_match_node(altr_sdram_ctrl_of_match,
324 pdev->dev.of_node)->data;
325
326 /* Validate the SDRAM controller has ECC enabled */
327 if (regmap_read(mc_vbase, priv->ecc_ctrl_offset, &read_reg) ||
328 ((read_reg & priv->ecc_ctl_en_mask) != priv->ecc_ctl_en_mask)) {
71bcada8
TT		 329 edac_printk(KERN_ERR, EDAC_MC,
330 "No ECC/ECC disabled [0x%08X]\n", read_reg);
331 return -ENODEV;
332 }
333
334 /* Grab memory size from device tree. */
f9ae487e 335 mem_size = get_total_mem();
71bcada8 336 if (!mem_size) {
f9ae487e 337 edac_printk(KERN_ERR, EDAC_MC, "Unable to calculate memory size\n");
71bcada8
TT		 338 return -ENODEV;
339 }
340
143f4a5a
TT		 341 /* Ensure the SDRAM Interrupt is disabled */
342 if (regmap_update_bits(mc_vbase, priv->ecc_irq_en_offset,
343 priv->ecc_irq_en_mask, 0)) {
344 edac_printk(KERN_ERR, EDAC_MC,
345 "Error disabling SDRAM ECC IRQ\n");
346 return -ENODEV;
347 }
348
349 /* Toggle to clear the SDRAM Error count */
350 if (regmap_update_bits(mc_vbase, priv->ecc_cnt_rst_offset,
351 priv->ecc_cnt_rst_mask,
352 priv->ecc_cnt_rst_mask)) {
353 edac_printk(KERN_ERR, EDAC_MC,
354 "Error clearing SDRAM ECC count\n");
355 return -ENODEV;
356 }
357
358 if (regmap_update_bits(mc_vbase, priv->ecc_cnt_rst_offset,
359 priv->ecc_cnt_rst_mask, 0)) {
71bcada8 360 edac_printk(KERN_ERR, EDAC_MC,
143f4a5a 361 "Error clearing SDRAM ECC count\n");
71bcada8
TT		 362 return -ENODEV;
363 }
364
365 irq = platform_get_irq(pdev, 0);
366 if (irq < 0) {
367 edac_printk(KERN_ERR, EDAC_MC,
368 "No irq %d in DT\n", irq);
369 return -ENODEV;
370 }
371
73bcc942
TT		 372 /* Arria10 has a 2nd IRQ */
373 irq2 = platform_get_irq(pdev, 1);
374
71bcada8
TT		 375 layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
376 layers[0].size = 1;
377 layers[0].is_virt_csrow = true;
378 layers[1].type = EDAC_MC_LAYER_CHANNEL;
379 layers[1].size = 1;
380 layers[1].is_virt_csrow = false;
381 mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers,
382 sizeof(struct altr_sdram_mc_data));
383 if (!mci)
384 return -ENOMEM;
385
386 mci->pdev = &pdev->dev;
387 drvdata = mci->pvt_info;
388 drvdata->mc_vbase = mc_vbase;
143f4a5a 389 drvdata->data = priv;
71bcada8
TT		 390 platform_set_drvdata(pdev, mci);
391
392 if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
143f4a5a
TT		 393 edac_printk(KERN_ERR, EDAC_MC,
394 "Unable to get managed device resource\n");
71bcada8
TT		 395 res = -ENOMEM;
396 goto free;
397 }
398
399 mci->mtype_cap = MEM_FLAG_DDR3;
400 mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
401 mci->edac_cap = EDAC_FLAG_SECDED;
402 mci->mod_name = EDAC_MOD_STR;
403 mci->mod_ver = EDAC_VERSION;
404 mci->ctl_name = dev_name(&pdev->dev);
405 mci->scrub_mode = SCRUB_SW_SRC;
406 mci->dev_name = dev_name(&pdev->dev);
407
408 dimm = *mci->dimms;
409 dimm->nr_pages = ((mem_size - 1) >> PAGE_SHIFT) + 1;
410 dimm->grain = 8;
411 dimm->dtype = DEV_X8;
412 dimm->mtype = MEM_DDR3;
413 dimm->edac_mode = EDAC_SECDED;
414
415 res = edac_mc_add_mc(mci);
416 if (res < 0)
417 goto err;
418
73bcc942
TT		 419 /* Only the Arria10 has separate IRQs */
420 if (irq2 > 0) {
421 /* Arria10 specific initialization */
422 res = a10_init(mc_vbase);
423 if (res < 0)
424 goto err2;
425
426 res = devm_request_irq(&pdev->dev, irq2,
427 altr_sdram_mc_err_handler,
428 IRQF_SHARED, dev_name(&pdev->dev), mci);
429 if (res < 0) {
430 edac_mc_printk(mci, KERN_ERR,
431 "Unable to request irq %d\n", irq2);
432 res = -ENODEV;
433 goto err2;
434 }
435
436 res = a10_unmask_irq(pdev, A10_DDR0_IRQ_MASK);
437 if (res < 0)
438 goto err2;
439
440 irqflags = IRQF_SHARED;
441 }
442
71bcada8 443 res = devm_request_irq(&pdev->dev, irq, altr_sdram_mc_err_handler,
73bcc942 444 irqflags, dev_name(&pdev->dev), mci);
71bcada8
TT		 445 if (res < 0) {
446 edac_mc_printk(mci, KERN_ERR,
447 "Unable to request irq %d\n", irq);
448 res = -ENODEV;
449 goto err2;
450 }
451
143f4a5a
TT		 452 /* Infrastructure ready - enable the IRQ */
453 if (regmap_update_bits(drvdata->mc_vbase, priv->ecc_irq_en_offset,
454 priv->ecc_irq_en_mask, priv->ecc_irq_en_mask)) {
71bcada8
TT		 455 edac_mc_printk(mci, KERN_ERR,
456 "Error enabling SDRAM ECC IRQ\n");
457 res = -ENODEV;
458 goto err2;
459 }
460
461 altr_sdr_mc_create_debugfs_nodes(mci);
462
463 devres_close_group(&pdev->dev, NULL);
464
465 return 0;
466
467err2:
468 edac_mc_del_mc(&pdev->dev);
469err:
470 devres_release_group(&pdev->dev, NULL);
471free:
472 edac_mc_free(mci);
473 edac_printk(KERN_ERR, EDAC_MC,
474 "EDAC Probe Failed; Error %d\n", res);
475
476 return res;
477}
478
479static int altr_sdram_remove(struct platform_device *pdev)
480{
481 struct mem_ctl_info *mci = platform_get_drvdata(pdev);
482
483 edac_mc_del_mc(&pdev->dev);
484 edac_mc_free(mci);
485 platform_set_drvdata(pdev, NULL);
486
487 return 0;
488}
489
6f2b6422
AT		 490/*
491 * If you want to suspend, need to disable EDAC by removing it
492 * from the device tree or defconfig.
493 */
494#ifdef CONFIG_PM
495static int altr_sdram_prepare(struct device *dev)
496{
497 pr_err("Suspend not allowed when EDAC is enabled.\n");
498
499 return -EPERM;
500}
501
502static const struct dev_pm_ops altr_sdram_pm_ops = {
503 .prepare = altr_sdram_prepare,
504};
505#endif
506
71bcada8
TT		 507static struct platform_driver altr_sdram_edac_driver = {
508 .probe = altr_sdram_probe,
509 .remove = altr_sdram_remove,
510 .driver = {
511 .name = "altr_sdram_edac",
6f2b6422
AT		 512#ifdef CONFIG_PM
513 .pm = &altr_sdram_pm_ops,
514#endif
71bcada8
TT		 515 .of_match_table = altr_sdram_ctrl_of_match,
516 },
517};
518
519module_platform_driver(altr_sdram_edac_driver);
520
c3eea194
TT		 521/************************* EDAC Parent Probe *************************/
522
523static const struct of_device_id altr_edac_device_of_match[];
524
525static const struct of_device_id altr_edac_of_match[] = {
526 { .compatible = "altr,socfpga-ecc-manager" },
527 {},
528};
529MODULE_DEVICE_TABLE(of, altr_edac_of_match);
530
531static int altr_edac_probe(struct platform_device *pdev)
532{
533 of_platform_populate(pdev->dev.of_node, altr_edac_device_of_match,
534 NULL, &pdev->dev);
535 return 0;
536}
537
538static struct platform_driver altr_edac_driver = {
539 .probe = altr_edac_probe,
540 .driver = {
541 .name = "socfpga_ecc_manager",
542 .of_match_table = altr_edac_of_match,
543 },
544};
545module_platform_driver(altr_edac_driver);
546
547/************************* EDAC Device Functions *************************/
548
549/*
550 * EDAC Device Functions (shared between various IPs).
551 * The discrete memories use the EDAC Device framework. The probe
552 * and error handling functions are very similar between memories
553 * so they are shared. The memory allocation and freeing for EDAC
554 * trigger testing are different for each memory.
555 */
556
1cf70377
TT		 557static const struct edac_device_prv_data ocramecc_data;
558static const struct edac_device_prv_data l2ecc_data;
559static const struct edac_device_prv_data a10_ocramecc_data;
560static const struct edac_device_prv_data a10_l2ecc_data;
c3eea194 561
c3eea194
TT		 562static irqreturn_t altr_edac_device_handler(int irq, void *dev_id)
563{
564 irqreturn_t ret_value = IRQ_NONE;
565 struct edac_device_ctl_info *dci = dev_id;
566 struct altr_edac_device_dev *drvdata = dci->pvt_info;
567 const struct edac_device_prv_data *priv = drvdata->data;
568
569 if (irq == drvdata->sb_irq) {
570 if (priv->ce_clear_mask)
571 writel(priv->ce_clear_mask, drvdata->base);
572 edac_device_handle_ce(dci, 0, 0, drvdata->edac_dev_name);
573 ret_value = IRQ_HANDLED;
574 } else if (irq == drvdata->db_irq) {
575 if (priv->ue_clear_mask)
576 writel(priv->ue_clear_mask, drvdata->base);
577 edac_device_handle_ue(dci, 0, 0, drvdata->edac_dev_name);
578 panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
579 ret_value = IRQ_HANDLED;
580 } else {
581 WARN_ON(1);
582 }
583
584 return ret_value;
585}
586
587static ssize_t altr_edac_device_trig(struct file *file,
588 const char __user *user_buf,
589 size_t count, loff_t *ppos)
590
591{
592 u32 *ptemp, i, error_mask;
593 int result = 0;
594 u8 trig_type;
595 unsigned long flags;
596 struct edac_device_ctl_info *edac_dci = file->private_data;
597 struct altr_edac_device_dev *drvdata = edac_dci->pvt_info;
598 const struct edac_device_prv_data *priv = drvdata->data;
599 void *generic_ptr = edac_dci->dev;
600
601 if (!user_buf || get_user(trig_type, user_buf))
602 return -EFAULT;
603
604 if (!priv->alloc_mem)
605 return -ENOMEM;
606
607 /*
608 * Note that generic_ptr is initialized to the device * but in
609 * some alloc_functions, this is overridden and returns data.
610 */
611 ptemp = priv->alloc_mem(priv->trig_alloc_sz, &generic_ptr);
612 if (!ptemp) {
613 edac_printk(KERN_ERR, EDAC_DEVICE,
614 "Inject: Buffer Allocation error\n");
615 return -ENOMEM;
616 }
617
618 if (trig_type == ALTR_UE_TRIGGER_CHAR)
619 error_mask = priv->ue_set_mask;
620 else
621 error_mask = priv->ce_set_mask;
622
623 edac_printk(KERN_ALERT, EDAC_DEVICE,
624 "Trigger Error Mask (0x%X)\n", error_mask);
625
626 local_irq_save(flags);
627 /* write ECC corrupted data out. */
628 for (i = 0; i < (priv->trig_alloc_sz / sizeof(*ptemp)); i++) {
629 /* Read data so we're in the correct state */
630 rmb();
631 if (ACCESS_ONCE(ptemp[i]))
632 result = -1;
633 /* Toggle Error bit (it is latched), leave ECC enabled */
811fce4f
TT		 634 writel(error_mask, (drvdata->base + priv->set_err_ofst));
635 writel(priv->ecc_enable_mask, (drvdata->base +
636 priv->set_err_ofst));
c3eea194
TT		 637 ptemp[i] = i;
638 }
639 /* Ensure it has been written out */
640 wmb();
641 local_irq_restore(flags);
642
643 if (result)
644 edac_printk(KERN_ERR, EDAC_DEVICE, "Mem Not Cleared\n");
645
646 /* Read out written data. ECC error caused here */
647 for (i = 0; i < ALTR_TRIGGER_READ_WRD_CNT; i++)
648 if (ACCESS_ONCE(ptemp[i]) != i)
649 edac_printk(KERN_ERR, EDAC_DEVICE,
650 "Read doesn't match written data\n");
651
652 if (priv->free_mem)
653 priv->free_mem(ptemp, priv->trig_alloc_sz, generic_ptr);
654
655 return count;
656}
657
658static const struct file_operations altr_edac_device_inject_fops = {
659 .open = simple_open,
660 .write = altr_edac_device_trig,
661 .llseek = generic_file_llseek,
662};
663
c7b4be8d
TT		 664static ssize_t altr_edac_a10_device_trig(struct file *file,
665 const char __user *user_buf,
666 size_t count, loff_t *ppos);
667
668static const struct file_operations altr_edac_a10_device_inject_fops = {
669 .open = simple_open,
670 .write = altr_edac_a10_device_trig,
671 .llseek = generic_file_llseek,
672};
673
c3eea194
TT		 674static void altr_create_edacdev_dbgfs(struct edac_device_ctl_info *edac_dci,
675 const struct edac_device_prv_data *priv)
676{
677 struct altr_edac_device_dev *drvdata = edac_dci->pvt_info;
678
679 if (!IS_ENABLED(CONFIG_EDAC_DEBUG))
680 return;
681
682 drvdata->debugfs_dir = edac_debugfs_create_dir(drvdata->edac_dev_name);
683 if (!drvdata->debugfs_dir)
684 return;
685
f399f34b 686 if (!edac_debugfs_create_file("altr_trigger", S_IWUSR,
c3eea194 687 drvdata->debugfs_dir, edac_dci,
e17ced2c 688 priv->inject_fops))
c3eea194
TT		 689 debugfs_remove_recursive(drvdata->debugfs_dir);
690}
691
692static const struct of_device_id altr_edac_device_of_match[] = {
693#ifdef CONFIG_EDAC_ALTERA_L2C
2c911f6c 694 { .compatible = "altr,socfpga-l2-ecc", .data = &l2ecc_data },
c3eea194
TT		 695#endif
696#ifdef CONFIG_EDAC_ALTERA_OCRAM
2c911f6c 697 { .compatible = "altr,socfpga-ocram-ecc", .data = &ocramecc_data },
c3eea194
TT		 698#endif
699 {},
700};
701MODULE_DEVICE_TABLE(of, altr_edac_device_of_match);
702
703/*
704 * altr_edac_device_probe()
705 * This is a generic EDAC device driver that will support
706 * various Altera memory devices such as the L2 cache ECC and
707 * OCRAM ECC as well as the memories for other peripherals.
708 * Module specific initialization is done by passing the
709 * function index in the device tree.
710 */
711static int altr_edac_device_probe(struct platform_device *pdev)
712{
713 struct edac_device_ctl_info *dci;
714 struct altr_edac_device_dev *drvdata;
715 struct resource *r;
716 int res = 0;
717 struct device_node *np = pdev->dev.of_node;
718 char *ecc_name = (char *)np->name;
719 static int dev_instance;
720
721 if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
722 edac_printk(KERN_ERR, EDAC_DEVICE,
723 "Unable to open devm\n");
724 return -ENOMEM;
725 }
726
727 r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
728 if (!r) {
729 edac_printk(KERN_ERR, EDAC_DEVICE,
730 "Unable to get mem resource\n");
731 res = -ENODEV;
732 goto fail;
733 }
734
735 if (!devm_request_mem_region(&pdev->dev, r->start, resource_size(r),
736 dev_name(&pdev->dev))) {
737 edac_printk(KERN_ERR, EDAC_DEVICE,
738 "%s:Error requesting mem region\n", ecc_name);
739 res = -EBUSY;
740 goto fail;
741 }
742
743 dci = edac_device_alloc_ctl_info(sizeof(*drvdata), ecc_name,
744 1, ecc_name, 1, 0, NULL, 0,
745 dev_instance++);
746
747 if (!dci) {
748 edac_printk(KERN_ERR, EDAC_DEVICE,
749 "%s: Unable to allocate EDAC device\n", ecc_name);
750 res = -ENOMEM;
751 goto fail;
752 }
753
754 drvdata = dci->pvt_info;
755 dci->dev = &pdev->dev;
756 platform_set_drvdata(pdev, dci);
757 drvdata->edac_dev_name = ecc_name;
758
759 drvdata->base = devm_ioremap(&pdev->dev, r->start, resource_size(r));
760 if (!drvdata->base)
761 goto fail1;
762
763 /* Get driver specific data for this EDAC device */
764 drvdata->data = of_match_node(altr_edac_device_of_match, np)->data;
765
766 /* Check specific dependencies for the module */
767 if (drvdata->data->setup) {
328ca7ae 768 res = drvdata->data->setup(drvdata);
c3eea194
TT		 769 if (res)
770 goto fail1;
771 }
772
773 drvdata->sb_irq = platform_get_irq(pdev, 0);
774 res = devm_request_irq(&pdev->dev, drvdata->sb_irq,
775 altr_edac_device_handler,
776 0, dev_name(&pdev->dev), dci);
777 if (res)
778 goto fail1;
779
780 drvdata->db_irq = platform_get_irq(pdev, 1);
781 res = devm_request_irq(&pdev->dev, drvdata->db_irq,
782 altr_edac_device_handler,
783 0, dev_name(&pdev->dev), dci);
784 if (res)
785 goto fail1;
786
787 dci->mod_name = "Altera ECC Manager";
788 dci->dev_name = drvdata->edac_dev_name;
789
790 res = edac_device_add_device(dci);
791 if (res)
792 goto fail1;
793
794 altr_create_edacdev_dbgfs(dci, drvdata->data);
795
796 devres_close_group(&pdev->dev, NULL);
797
798 return 0;
799
800fail1:
801 edac_device_free_ctl_info(dci);
802fail:
803 devres_release_group(&pdev->dev, NULL);
804 edac_printk(KERN_ERR, EDAC_DEVICE,
805 "%s:Error setting up EDAC device: %d\n", ecc_name, res);
806
807 return res;
808}
809
810static int altr_edac_device_remove(struct platform_device *pdev)
811{
812 struct edac_device_ctl_info *dci = platform_get_drvdata(pdev);
813 struct altr_edac_device_dev *drvdata = dci->pvt_info;
814
815 debugfs_remove_recursive(drvdata->debugfs_dir);
816 edac_device_del_device(&pdev->dev);
817 edac_device_free_ctl_info(dci);
818
819 return 0;
820}
821
822static struct platform_driver altr_edac_device_driver = {
823 .probe = altr_edac_device_probe,
824 .remove = altr_edac_device_remove,
825 .driver = {
826 .name = "altr_edac_device",
827 .of_match_table = altr_edac_device_of_match,
828 },
829};
830module_platform_driver(altr_edac_device_driver);
831
6b300fb9 832/******************* Arria10 Device ECC Shared Functions *****************/
c3eea194 833
1aa6eb5c
AB		 834/*
835 * Test for memory's ECC dependencies upon entry because platform specific
836 * startup should have initialized the memory and enabled the ECC.
837 * Can't turn on ECC here because accessing un-initialized memory will
838 * cause CE/UE errors possibly causing an ABORT.
839 */
6b300fb9
TT		 840static int __maybe_unused
841altr_check_ecc_deps(struct altr_edac_device_dev *device)
1aa6eb5c
AB		 842{
843 void __iomem *base = device->base;
844 const struct edac_device_prv_data *prv = device->data;
845
846 if (readl(base + prv->ecc_en_ofst) & prv->ecc_enable_mask)
847 return 0;
848
849 edac_printk(KERN_ERR, EDAC_DEVICE,
850 "%s: No ECC present or ECC disabled.\n",
851 device->edac_dev_name);
852 return -ENODEV;
853}
c3eea194 854
6b300fb9
TT		 855static irqreturn_t __maybe_unused altr_edac_a10_ecc_irq(int irq, void *dev_id)
856{
857 struct altr_edac_device_dev *dci = dev_id;
858 void __iomem *base = dci->base;
859
860 if (irq == dci->sb_irq) {
861 writel(ALTR_A10_ECC_SERRPENA,
862 base + ALTR_A10_ECC_INTSTAT_OFST);
863 edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name);
864
865 return IRQ_HANDLED;
866 } else if (irq == dci->db_irq) {
867 writel(ALTR_A10_ECC_DERRPENA,
868 base + ALTR_A10_ECC_INTSTAT_OFST);
869 edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name);
870 if (dci->data->panic)
871 panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
872
873 return IRQ_HANDLED;
874 }
875
876 WARN_ON(1);
877
878 return IRQ_NONE;
879}
880
1166fde9
TT		 881/******************* Arria10 Memory Buffer Functions *********************/
882
883static inline int a10_get_irq_mask(struct device_node *np)
884{
885 int irq;
886 const u32 *handle = of_get_property(np, "interrupts", NULL);
887
888 if (!handle)
889 return -ENODEV;
890 irq = be32_to_cpup(handle);
891 return irq;
892}
893
894static inline void ecc_set_bits(u32 bit_mask, void __iomem *ioaddr)
895{
896 u32 value = readl(ioaddr);
897
898 value |= bit_mask;
899 writel(value, ioaddr);
900}
901
902static inline void ecc_clear_bits(u32 bit_mask, void __iomem *ioaddr)
903{
904 u32 value = readl(ioaddr);
905
906 value &= ~bit_mask;
907 writel(value, ioaddr);
908}
909
910static inline int ecc_test_bits(u32 bit_mask, void __iomem *ioaddr)
911{
912 u32 value = readl(ioaddr);
913
914 return (value & bit_mask) ? 1 : 0;
915}
916
917/*
918 * This function uses the memory initialization block in the Arria10 ECC
919 * controller to initialize/clear the entire memory data and ECC data.
920 */
921static int __maybe_unused altr_init_memory_port(void __iomem *ioaddr, int port)
922{
923 int limit = ALTR_A10_ECC_INIT_WATCHDOG_10US;
924 u32 init_mask, stat_mask, clear_mask;
925 int ret = 0;
926
927 if (port) {
928 init_mask = ALTR_A10_ECC_INITB;
929 stat_mask = ALTR_A10_ECC_INITCOMPLETEB;
930 clear_mask = ALTR_A10_ECC_ERRPENB_MASK;
931 } else {
932 init_mask = ALTR_A10_ECC_INITA;
933 stat_mask = ALTR_A10_ECC_INITCOMPLETEA;
934 clear_mask = ALTR_A10_ECC_ERRPENA_MASK;
935 }
936
937 ecc_set_bits(init_mask, (ioaddr + ALTR_A10_ECC_CTRL_OFST));
938 while (limit--) {
939 if (ecc_test_bits(stat_mask,
940 (ioaddr + ALTR_A10_ECC_INITSTAT_OFST)))
941 break;
942 udelay(1);
943 }
944 if (limit < 0)
945 ret = -EBUSY;
946
947 /* Clear any pending ECC interrupts */
948 writel(clear_mask, (ioaddr + ALTR_A10_ECC_INTSTAT_OFST));
949
950 return ret;
951}
952
953static __init int __maybe_unused
954altr_init_a10_ecc_block(struct device_node *np, u32 irq_mask,
955 u32 ecc_ctrl_en_mask, bool dual_port)
956{
957 int ret = 0;
958 void __iomem *ecc_block_base;
959 struct regmap *ecc_mgr_map;
960 char *ecc_name;
961 struct device_node *np_eccmgr;
962
963 ecc_name = (char *)np->name;
964
965 /* Get the ECC Manager - parent of the device EDACs */
966 np_eccmgr = of_get_parent(np);
967 ecc_mgr_map = syscon_regmap_lookup_by_phandle(np_eccmgr,
968 "altr,sysmgr-syscon");
969 of_node_put(np_eccmgr);
970 if (IS_ERR(ecc_mgr_map)) {
971 edac_printk(KERN_ERR, EDAC_DEVICE,
972 "Unable to get syscon altr,sysmgr-syscon\n");
973 return -ENODEV;
974 }
975
976 /* Map the ECC Block */
977 ecc_block_base = of_iomap(np, 0);
978 if (!ecc_block_base) {
979 edac_printk(KERN_ERR, EDAC_DEVICE,
980 "Unable to map %s ECC block\n", ecc_name);
981 return -ENODEV;
982 }
983
984 /* Disable ECC */
985 regmap_write(ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_SET_OFST, irq_mask);
986 writel(ALTR_A10_ECC_SERRINTEN,
987 (ecc_block_base + ALTR_A10_ECC_ERRINTENR_OFST));
988 ecc_clear_bits(ecc_ctrl_en_mask,
989 (ecc_block_base + ALTR_A10_ECC_CTRL_OFST));
990 /* Ensure all writes complete */
991 wmb();
992 /* Use HW initialization block to initialize memory for ECC */
993 ret = altr_init_memory_port(ecc_block_base, 0);
994 if (ret) {
995 edac_printk(KERN_ERR, EDAC_DEVICE,
996 "ECC: cannot init %s PORTA memory\n", ecc_name);
997 goto out;
998 }
999
1000 if (dual_port) {
1001 ret = altr_init_memory_port(ecc_block_base, 1);
1002 if (ret) {
1003 edac_printk(KERN_ERR, EDAC_DEVICE,
1004 "ECC: cannot init %s PORTB memory\n",
1005 ecc_name);
1006 goto out;
1007 }
1008 }
1009
1010 /* Interrupt mode set to every SBERR */
1011 regmap_write(ecc_mgr_map, ALTR_A10_ECC_INTMODE_OFST,
1012 ALTR_A10_ECC_INTMODE);
1013 /* Enable ECC */
1014 ecc_set_bits(ecc_ctrl_en_mask, (ecc_block_base +
1015 ALTR_A10_ECC_CTRL_OFST));
1016 writel(ALTR_A10_ECC_SERRINTEN,
1017 (ecc_block_base + ALTR_A10_ECC_ERRINTENS_OFST));
1018 regmap_write(ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_CLR_OFST, irq_mask);
1019 /* Ensure all writes complete */
1020 wmb();
1021out:
1022 iounmap(ecc_block_base);
1023 return ret;
1024}
1025
1026static int validate_parent_available(struct device_node *np);
1027static const struct of_device_id altr_edac_a10_device_of_match[];
1028static int __init __maybe_unused altr_init_a10_ecc_device_type(char *compat)
1029{
1030 int irq;
1031 struct device_node *child, *np = of_find_compatible_node(NULL, NULL,
1032 "altr,socfpga-a10-ecc-manager");
1033 if (!np) {
1034 edac_printk(KERN_ERR, EDAC_DEVICE, "ECC Manager not found\n");
1035 return -ENODEV;
1036 }
1037
1038 for_each_child_of_node(np, child) {
1039 const struct of_device_id *pdev_id;
1040 const struct edac_device_prv_data *prv;
1041
1042 if (!of_device_is_available(child))
1043 continue;
1044 if (!of_device_is_compatible(child, compat))
1045 continue;
1046
1047 if (validate_parent_available(child))
1048 continue;
1049
1050 irq = a10_get_irq_mask(child);
1051 if (irq < 0)
1052 continue;
1053
1054 /* Get matching node and check for valid result */
1055 pdev_id = of_match_node(altr_edac_a10_device_of_match, child);
1056 if (IS_ERR_OR_NULL(pdev_id))
1057 continue;
1058
1059 /* Validate private data pointer before dereferencing */
1060 prv = pdev_id->data;
1061 if (!prv)
1062 continue;
1063
1064 altr_init_a10_ecc_block(child, BIT(irq),
1065 prv->ecc_enable_mask, 0);
1066 }
1067
1068 of_node_put(np);
1069 return 0;
1070}
1071
6b300fb9
TT		 1072/*********************** OCRAM EDAC Device Functions *********************/
1073
1074#ifdef CONFIG_EDAC_ALTERA_OCRAM
1075
c3eea194
TT		 1076static void *ocram_alloc_mem(size_t size, void **other)
1077{
1078 struct device_node *np;
1079 struct gen_pool *gp;
1080 void *sram_addr;
1081
1082 np = of_find_compatible_node(NULL, NULL, "altr,socfpga-ocram-ecc");
1083 if (!np)
1084 return NULL;
1085
1086 gp = of_gen_pool_get(np, "iram", 0);
1087 of_node_put(np);
1088 if (!gp)
1089 return NULL;
1090
1091 sram_addr = (void *)gen_pool_alloc(gp, size);
1092 if (!sram_addr)
1093 return NULL;
1094
1095 memset(sram_addr, 0, size);
1096 /* Ensure data is written out */
1097 wmb();
1098
1099 /* Remember this handle for freeing later */
1100 *other = gp;
1101
1102 return sram_addr;
1103}
1104
1105static void ocram_free_mem(void *p, size_t size, void *other)
1106{
1107 gen_pool_free((struct gen_pool *)other, (u32)p, size);
1108}
1109
1cf70377 1110static const struct edac_device_prv_data ocramecc_data = {
aa1f06dc 1111 .setup = altr_check_ecc_deps,
c3eea194
TT		 1112 .ce_clear_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_SERR),
1113 .ue_clear_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_DERR),
c3eea194
TT		 1114 .alloc_mem = ocram_alloc_mem,
1115 .free_mem = ocram_free_mem,
1116 .ecc_enable_mask = ALTR_OCR_ECC_EN,
943ad917 1117 .ecc_en_ofst = ALTR_OCR_ECC_REG_OFFSET,
c3eea194
TT		 1118 .ce_set_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_INJS),
1119 .ue_set_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_INJD),
811fce4f 1120 .set_err_ofst = ALTR_OCR_ECC_REG_OFFSET,
c3eea194 1121 .trig_alloc_sz = ALTR_TRIG_OCRAM_BYTE_SIZE,
e17ced2c 1122 .inject_fops = &altr_edac_device_inject_fops,
c3eea194
TT		 1123};
1124
1cf70377 1125static const struct edac_device_prv_data a10_ocramecc_data = {
c7b4be8d
TT		 1126 .setup = altr_check_ecc_deps,
1127 .ce_clear_mask = ALTR_A10_ECC_SERRPENA,
1128 .ue_clear_mask = ALTR_A10_ECC_DERRPENA,
1129 .irq_status_mask = A10_SYSMGR_ECC_INTSTAT_OCRAM,
c7b4be8d
TT		 1130 .ecc_enable_mask = ALTR_A10_OCRAM_ECC_EN_CTL,
1131 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1132 .ce_set_mask = ALTR_A10_ECC_TSERRA,
1133 .ue_set_mask = ALTR_A10_ECC_TDERRA,
1134 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1135 .ecc_irq_handler = altr_edac_a10_ecc_irq,
1136 .inject_fops = &altr_edac_a10_device_inject_fops,
2b083d65
TT		 1137 /*
1138 * OCRAM panic on uncorrectable error because sleep/resume
1139 * functions and FPGA contents are stored in OCRAM. Prefer
1140 * a kernel panic over executing/loading corrupted data.
1141 */
1142 .panic = true,
c7b4be8d
TT		 1143};
1144
c3eea194
TT		 1145#endif /* CONFIG_EDAC_ALTERA_OCRAM */
1146
1147/********************* L2 Cache EDAC Device Functions ********************/
1148
1149#ifdef CONFIG_EDAC_ALTERA_L2C
1150
1151static void *l2_alloc_mem(size_t size, void **other)
1152{
1153 struct device *dev = *other;
1154 void *ptemp = devm_kzalloc(dev, size, GFP_KERNEL);
1155
1156 if (!ptemp)
1157 return NULL;
1158
1159 /* Make sure everything is written out */
1160 wmb();
1161
1162 /*
1163 * Clean all cache levels up to LoC (includes L2)
1164 * This ensures the corrupted data is written into
1165 * L2 cache for readback test (which causes ECC error).
1166 */
1167 flush_cache_all();
1168
1169 return ptemp;
1170}
1171
1172static void l2_free_mem(void *p, size_t size, void *other)
1173{
1174 struct device *dev = other;
1175
1176 if (dev && p)
1177 devm_kfree(dev, p);
1178}
1179
1180/*
1181 * altr_l2_check_deps()
1182 * Test for L2 cache ECC dependencies upon entry because
1183 * platform specific startup should have initialized the L2
1184 * memory and enabled the ECC.
1185 * Bail if ECC is not enabled.
1186 * Note that L2 Cache Enable is forced at build time.
1187 */
328ca7ae 1188static int altr_l2_check_deps(struct altr_edac_device_dev *device)
c3eea194 1189{
328ca7ae 1190 void __iomem *base = device->base;
27439a1a
TT		 1191 const struct edac_device_prv_data *prv = device->data;
1192
1193 if ((readl(base) & prv->ecc_enable_mask) ==
1194 prv->ecc_enable_mask)
c3eea194
TT		 1195 return 0;
1196
1197 edac_printk(KERN_ERR, EDAC_DEVICE,
1198 "L2: No ECC present, or ECC disabled\n");
1199 return -ENODEV;
1200}
1201
13ab8448 1202static irqreturn_t altr_edac_a10_l2_irq(int irq, void *dev_id)
588cb03e 1203{
13ab8448
TT		 1204 struct altr_edac_device_dev *dci = dev_id;
1205
1206 if (irq == dci->sb_irq) {
588cb03e
TT		 1207 regmap_write(dci->edac->ecc_mgr_map,
1208 A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST,
1209 A10_SYSGMR_MPU_CLEAR_L2_ECC_SB);
1210 edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name);
13ab8448
TT		 1211
1212 return IRQ_HANDLED;
1213 } else if (irq == dci->db_irq) {
588cb03e
TT		 1214 regmap_write(dci->edac->ecc_mgr_map,
1215 A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST,
1216 A10_SYSGMR_MPU_CLEAR_L2_ECC_MB);
1217 edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name);
1218 panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
13ab8448
TT		 1219
1220 return IRQ_HANDLED;
588cb03e 1221 }
13ab8448
TT		 1222
1223 WARN_ON(1);
1224
1225 return IRQ_NONE;
588cb03e
TT		 1226}
1227
1cf70377 1228static const struct edac_device_prv_data l2ecc_data = {
c3eea194
TT		 1229 .setup = altr_l2_check_deps,
1230 .ce_clear_mask = 0,
1231 .ue_clear_mask = 0,
c3eea194
TT		 1232 .alloc_mem = l2_alloc_mem,
1233 .free_mem = l2_free_mem,
1234 .ecc_enable_mask = ALTR_L2_ECC_EN,
1235 .ce_set_mask = (ALTR_L2_ECC_EN | ALTR_L2_ECC_INJS),
1236 .ue_set_mask = (ALTR_L2_ECC_EN | ALTR_L2_ECC_INJD),
811fce4f 1237 .set_err_ofst = ALTR_L2_ECC_REG_OFFSET,
c3eea194 1238 .trig_alloc_sz = ALTR_TRIG_L2C_BYTE_SIZE,
e17ced2c 1239 .inject_fops = &altr_edac_device_inject_fops,
c3eea194
TT		 1240};
1241
1cf70377 1242static const struct edac_device_prv_data a10_l2ecc_data = {
588cb03e
TT		 1243 .setup = altr_l2_check_deps,
1244 .ce_clear_mask = ALTR_A10_L2_ECC_SERR_CLR,
1245 .ue_clear_mask = ALTR_A10_L2_ECC_MERR_CLR,
1246 .irq_status_mask = A10_SYSMGR_ECC_INTSTAT_L2,
588cb03e
TT		 1247 .alloc_mem = l2_alloc_mem,
1248 .free_mem = l2_free_mem,
1249 .ecc_enable_mask = ALTR_A10_L2_ECC_EN_CTL,
1250 .ce_set_mask = ALTR_A10_L2_ECC_CE_INJ_MASK,
1251 .ue_set_mask = ALTR_A10_L2_ECC_UE_INJ_MASK,
1252 .set_err_ofst = ALTR_A10_L2_ECC_INJ_OFST,
1253 .ecc_irq_handler = altr_edac_a10_l2_irq,
1254 .trig_alloc_sz = ALTR_TRIG_L2C_BYTE_SIZE,
e17ced2c 1255 .inject_fops = &altr_edac_device_inject_fops,
588cb03e
TT		 1256};
1257
c3eea194
TT		 1258#endif /* CONFIG_EDAC_ALTERA_L2C */
1259
ab8c1e0f
TT		 1260/********************* Ethernet Device Functions ********************/
1261
1262#ifdef CONFIG_EDAC_ALTERA_ETHERNET
1263
1264static const struct edac_device_prv_data a10_enetecc_data = {
1265 .setup = altr_check_ecc_deps,
1266 .ce_clear_mask = ALTR_A10_ECC_SERRPENA,
1267 .ue_clear_mask = ALTR_A10_ECC_DERRPENA,
ab8c1e0f
TT		 1268 .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
1269 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1270 .ce_set_mask = ALTR_A10_ECC_TSERRA,
1271 .ue_set_mask = ALTR_A10_ECC_TDERRA,
1272 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1273 .ecc_irq_handler = altr_edac_a10_ecc_irq,
1274 .inject_fops = &altr_edac_a10_device_inject_fops,
1275};
1276
1277static int __init socfpga_init_ethernet_ecc(void)
1278{
1279 return altr_init_a10_ecc_device_type("altr,socfpga-eth-mac-ecc");
1280}
1281
1282early_initcall(socfpga_init_ethernet_ecc);
1283
1284#endif /* CONFIG_EDAC_ALTERA_ETHERNET */
1285
c6882fb2
TT		 1286/********************** NAND Device Functions **********************/
1287
1288#ifdef CONFIG_EDAC_ALTERA_NAND
1289
1290static const struct edac_device_prv_data a10_nandecc_data = {
1291 .setup = altr_check_ecc_deps,
1292 .ce_clear_mask = ALTR_A10_ECC_SERRPENA,
1293 .ue_clear_mask = ALTR_A10_ECC_DERRPENA,
c6882fb2
TT		 1294 .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
1295 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1296 .ce_set_mask = ALTR_A10_ECC_TSERRA,
1297 .ue_set_mask = ALTR_A10_ECC_TDERRA,
1298 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1299 .ecc_irq_handler = altr_edac_a10_ecc_irq,
1300 .inject_fops = &altr_edac_a10_device_inject_fops,
1301};
1302
1303static int __init socfpga_init_nand_ecc(void)
1304{
1305 return altr_init_a10_ecc_device_type("altr,socfpga-nand-ecc");
1306}
1307
1308early_initcall(socfpga_init_nand_ecc);
1309
1310#endif /* CONFIG_EDAC_ALTERA_NAND */
1311
e8263793
TT		 1312/********************** DMA Device Functions **********************/
1313
1314#ifdef CONFIG_EDAC_ALTERA_DMA
1315
1316static const struct edac_device_prv_data a10_dmaecc_data = {
1317 .setup = altr_check_ecc_deps,
1318 .ce_clear_mask = ALTR_A10_ECC_SERRPENA,
1319 .ue_clear_mask = ALTR_A10_ECC_DERRPENA,
e8263793
TT		 1320 .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
1321 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1322 .ce_set_mask = ALTR_A10_ECC_TSERRA,
1323 .ue_set_mask = ALTR_A10_ECC_TDERRA,
1324 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1325 .ecc_irq_handler = altr_edac_a10_ecc_irq,
1326 .inject_fops = &altr_edac_a10_device_inject_fops,
1327};
1328
1329static int __init socfpga_init_dma_ecc(void)
1330{
1331 return altr_init_a10_ecc_device_type("altr,socfpga-dma-ecc");
1332}
1333
1334early_initcall(socfpga_init_dma_ecc);
1335
1336#endif /* CONFIG_EDAC_ALTERA_DMA */
1337
c609581d
TT		 1338/********************** USB Device Functions **********************/
1339
1340#ifdef CONFIG_EDAC_ALTERA_USB
1341
1342static const struct edac_device_prv_data a10_usbecc_data = {
1343 .setup = altr_check_ecc_deps,
1344 .ce_clear_mask = ALTR_A10_ECC_SERRPENA,
1345 .ue_clear_mask = ALTR_A10_ECC_DERRPENA,
c609581d
TT		 1346 .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
1347 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1348 .ce_set_mask = ALTR_A10_ECC_TSERRA,
1349 .ue_set_mask = ALTR_A10_ECC_TDERRA,
1350 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1351 .ecc_irq_handler = altr_edac_a10_ecc_irq,
1352 .inject_fops = &altr_edac_a10_device_inject_fops,
1353};
1354
1355static int __init socfpga_init_usb_ecc(void)
1356{
1357 return altr_init_a10_ecc_device_type("altr,socfpga-usb-ecc");
1358}
1359
1360early_initcall(socfpga_init_usb_ecc);
1361
1362#endif /* CONFIG_EDAC_ALTERA_USB */
1363
485fe9e2
TT		 1364/********************** QSPI Device Functions **********************/
1365
1366#ifdef CONFIG_EDAC_ALTERA_QSPI
1367
1368static const struct edac_device_prv_data a10_qspiecc_data = {
1369 .setup = altr_check_ecc_deps,
1370 .ce_clear_mask = ALTR_A10_ECC_SERRPENA,
1371 .ue_clear_mask = ALTR_A10_ECC_DERRPENA,
485fe9e2
TT		 1372 .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
1373 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1374 .ce_set_mask = ALTR_A10_ECC_TSERRA,
1375 .ue_set_mask = ALTR_A10_ECC_TDERRA,
1376 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1377 .ecc_irq_handler = altr_edac_a10_ecc_irq,
1378 .inject_fops = &altr_edac_a10_device_inject_fops,
1379};
1380
1381static int __init socfpga_init_qspi_ecc(void)
1382{
1383 return altr_init_a10_ecc_device_type("altr,socfpga-qspi-ecc");
1384}
1385
1386early_initcall(socfpga_init_qspi_ecc);
1387
1388#endif /* CONFIG_EDAC_ALTERA_QSPI */
1389
91104984
TT		 1390/********************* SDMMC Device Functions **********************/
1391
1392#ifdef CONFIG_EDAC_ALTERA_SDMMC
1393
1394static const struct edac_device_prv_data a10_sdmmceccb_data;
1395static int altr_portb_setup(struct altr_edac_device_dev *device)
1396{
1397 struct edac_device_ctl_info *dci;
1398 struct altr_edac_device_dev *altdev;
1399 char *ecc_name = "sdmmcb-ecc";
1400 int edac_idx, rc;
1401 struct device_node *np;
1402 const struct edac_device_prv_data *prv = &a10_sdmmceccb_data;
1403
1404 rc = altr_check_ecc_deps(device);
1405 if (rc)
1406 return rc;
1407
1408 np = of_find_compatible_node(NULL, NULL, "altr,socfpga-sdmmc-ecc");
1409 if (!np) {
1410 edac_printk(KERN_WARNING, EDAC_DEVICE, "SDMMC node not found\n");
1411 return -ENODEV;
1412 }
1413
1414 /* Create the PortB EDAC device */
1415 edac_idx = edac_device_alloc_index();
1416 dci = edac_device_alloc_ctl_info(sizeof(*altdev), ecc_name, 1,
1417 ecc_name, 1, 0, NULL, 0, edac_idx);
1418 if (!dci) {
1419 edac_printk(KERN_ERR, EDAC_DEVICE,
1420 "%s: Unable to allocate PortB EDAC device\n",
1421 ecc_name);
1422 return -ENOMEM;
1423 }
1424
1425 /* Initialize the PortB EDAC device structure from PortA structure */
1426 altdev = dci->pvt_info;
1427 *altdev = *device;
1428
1429 if (!devres_open_group(&altdev->ddev, altr_portb_setup, GFP_KERNEL))
1430 return -ENOMEM;
1431
1432 /* Update PortB specific values */
1433 altdev->edac_dev_name = ecc_name;
1434 altdev->edac_idx = edac_idx;
1435 altdev->edac_dev = dci;
1436 altdev->data = prv;
1437 dci->dev = &altdev->ddev;
1438 dci->ctl_name = "Altera ECC Manager";
1439 dci->mod_name = ecc_name;
1440 dci->dev_name = ecc_name;
1441
1442 /* Update the IRQs for PortB */
1443 altdev->sb_irq = irq_of_parse_and_map(np, 2);
1444 if (!altdev->sb_irq) {
1445 edac_printk(KERN_ERR, EDAC_DEVICE, "Error PortB SBIRQ alloc\n");
1446 rc = -ENODEV;
1447 goto err_release_group_1;
1448 }
1449 rc = devm_request_irq(&altdev->ddev, altdev->sb_irq,
1450 prv->ecc_irq_handler,
a29d64a4
TT		 1451 IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
1452 ecc_name, altdev);
91104984
TT		 1453 if (rc) {
1454 edac_printk(KERN_ERR, EDAC_DEVICE, "PortB SBERR IRQ error\n");
1455 goto err_release_group_1;
1456 }
1457
1458 altdev->db_irq = irq_of_parse_and_map(np, 3);
1459 if (!altdev->db_irq) {
1460 edac_printk(KERN_ERR, EDAC_DEVICE, "Error PortB DBIRQ alloc\n");
1461 rc = -ENODEV;
1462 goto err_release_group_1;
1463 }
1464 rc = devm_request_irq(&altdev->ddev, altdev->db_irq,
1465 prv->ecc_irq_handler,
a29d64a4
TT		 1466 IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
1467 ecc_name, altdev);
91104984
TT		 1468 if (rc) {
1469 edac_printk(KERN_ERR, EDAC_DEVICE, "PortB DBERR IRQ error\n");
1470 goto err_release_group_1;
1471 }
1472
1473 rc = edac_device_add_device(dci);
1474 if (rc) {
1475 edac_printk(KERN_ERR, EDAC_DEVICE,
1476 "edac_device_add_device portB failed\n");
1477 rc = -ENOMEM;
1478 goto err_release_group_1;
1479 }
1480 altr_create_edacdev_dbgfs(dci, prv);
1481
1482 list_add(&altdev->next, &altdev->edac->a10_ecc_devices);
1483
1484 devres_remove_group(&altdev->ddev, altr_portb_setup);
1485
1486 return 0;
1487
1488err_release_group_1:
1489 edac_device_free_ctl_info(dci);
1490 devres_release_group(&altdev->ddev, altr_portb_setup);
1491 edac_printk(KERN_ERR, EDAC_DEVICE,
1492 "%s:Error setting up EDAC device: %d\n", ecc_name, rc);
1493 return rc;
1494}
1495
1496static irqreturn_t altr_edac_a10_ecc_irq_portb(int irq, void *dev_id)
1497{
1498 struct altr_edac_device_dev *ad = dev_id;
1499 void __iomem *base = ad->base;
1500 const struct edac_device_prv_data *priv = ad->data;
1501
1502 if (irq == ad->sb_irq) {
1503 writel(priv->ce_clear_mask,
1504 base + ALTR_A10_ECC_INTSTAT_OFST);
1505 edac_device_handle_ce(ad->edac_dev, 0, 0, ad->edac_dev_name);
1506 return IRQ_HANDLED;
1507 } else if (irq == ad->db_irq) {
1508 writel(priv->ue_clear_mask,
1509 base + ALTR_A10_ECC_INTSTAT_OFST);
1510 edac_device_handle_ue(ad->edac_dev, 0, 0, ad->edac_dev_name);
1511 return IRQ_HANDLED;
1512 }
1513
1514 WARN_ONCE(1, "Unhandled IRQ%d on Port B.", irq);
1515
1516 return IRQ_NONE;
1517}
1518
1519static const struct edac_device_prv_data a10_sdmmcecca_data = {
1520 .setup = altr_portb_setup,
1521 .ce_clear_mask = ALTR_A10_ECC_SERRPENA,
1522 .ue_clear_mask = ALTR_A10_ECC_DERRPENA,
91104984
TT		 1523 .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
1524 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1525 .ce_set_mask = ALTR_A10_ECC_SERRPENA,
1526 .ue_set_mask = ALTR_A10_ECC_DERRPENA,
1527 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1528 .ecc_irq_handler = altr_edac_a10_ecc_irq,
1529 .inject_fops = &altr_edac_a10_device_inject_fops,
1530};
1531
1532static const struct edac_device_prv_data a10_sdmmceccb_data = {
1533 .setup = altr_portb_setup,
1534 .ce_clear_mask = ALTR_A10_ECC_SERRPENB,
1535 .ue_clear_mask = ALTR_A10_ECC_DERRPENB,
91104984
TT		 1536 .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
1537 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1538 .ce_set_mask = ALTR_A10_ECC_TSERRB,
1539 .ue_set_mask = ALTR_A10_ECC_TDERRB,
1540 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1541 .ecc_irq_handler = altr_edac_a10_ecc_irq_portb,
1542 .inject_fops = &altr_edac_a10_device_inject_fops,
1543};
1544
1545static int __init socfpga_init_sdmmc_ecc(void)
1546{
1547 int rc = -ENODEV;
1548 struct device_node *child = of_find_compatible_node(NULL, NULL,
1549 "altr,socfpga-sdmmc-ecc");
1550 if (!child) {
1551 edac_printk(KERN_WARNING, EDAC_DEVICE, "SDMMC node not found\n");
1552 return -ENODEV;
1553 }
1554
1555 if (!of_device_is_available(child))
1556 goto exit;
1557
1558 if (validate_parent_available(child))
1559 goto exit;
1560
1561 rc = altr_init_a10_ecc_block(child, ALTR_A10_SDMMC_IRQ_MASK,
1562 a10_sdmmcecca_data.ecc_enable_mask, 1);
1563exit:
1564 of_node_put(child);
1565 return rc;
1566}
1567
1568early_initcall(socfpga_init_sdmmc_ecc);
1569
1570#endif /* CONFIG_EDAC_ALTERA_SDMMC */
1571
588cb03e 1572/********************* Arria10 EDAC Device Functions *************************/
ab564cb5
TT		 1573static const struct of_device_id altr_edac_a10_device_of_match[] = {
1574#ifdef CONFIG_EDAC_ALTERA_L2C
1575 { .compatible = "altr,socfpga-a10-l2-ecc", .data = &a10_l2ecc_data },
1576#endif
1577#ifdef CONFIG_EDAC_ALTERA_OCRAM
1578 { .compatible = "altr,socfpga-a10-ocram-ecc",
1579 .data = &a10_ocramecc_data },
ab8c1e0f
TT		 1580#endif
1581#ifdef CONFIG_EDAC_ALTERA_ETHERNET
1582 { .compatible = "altr,socfpga-eth-mac-ecc",
1583 .data = &a10_enetecc_data },
c6882fb2
TT		 1584#endif
1585#ifdef CONFIG_EDAC_ALTERA_NAND
1586 { .compatible = "altr,socfpga-nand-ecc", .data = &a10_nandecc_data },
e8263793
TT		 1587#endif
1588#ifdef CONFIG_EDAC_ALTERA_DMA
1589 { .compatible = "altr,socfpga-dma-ecc", .data = &a10_dmaecc_data },
c609581d
TT		 1590#endif
1591#ifdef CONFIG_EDAC_ALTERA_USB
1592 { .compatible = "altr,socfpga-usb-ecc", .data = &a10_usbecc_data },
485fe9e2
TT		 1593#endif
1594#ifdef CONFIG_EDAC_ALTERA_QSPI
1595 { .compatible = "altr,socfpga-qspi-ecc", .data = &a10_qspiecc_data },
91104984
TT		 1596#endif
1597#ifdef CONFIG_EDAC_ALTERA_SDMMC
1598 { .compatible = "altr,socfpga-sdmmc-ecc", .data = &a10_sdmmcecca_data },
ab564cb5
TT		 1599#endif
1600 {},
1601};
1602MODULE_DEVICE_TABLE(of, altr_edac_a10_device_of_match);
588cb03e
TT		 1603
1604/*
1605 * The Arria10 EDAC Device Functions differ from the Cyclone5/Arria5
1606 * because 2 IRQs are shared among the all ECC peripherals. The ECC
1607 * manager manages the IRQs and the children.
1608 * Based on xgene_edac.c peripheral code.
1609 */
1610
c7b4be8d
TT		 1611static ssize_t altr_edac_a10_device_trig(struct file *file,
1612 const char __user *user_buf,
1613 size_t count, loff_t *ppos)
1614{
1615 struct edac_device_ctl_info *edac_dci = file->private_data;
1616 struct altr_edac_device_dev *drvdata = edac_dci->pvt_info;
1617 const struct edac_device_prv_data *priv = drvdata->data;
1618 void __iomem *set_addr = (drvdata->base + priv->set_err_ofst);
1619 unsigned long flags;
1620 u8 trig_type;
1621
1622 if (!user_buf || get_user(trig_type, user_buf))
1623 return -EFAULT;
1624
1625 local_irq_save(flags);
1626 if (trig_type == ALTR_UE_TRIGGER_CHAR)
1627 writel(priv->ue_set_mask, set_addr);
1628 else
1629 writel(priv->ce_set_mask, set_addr);
1630 /* Ensure the interrupt test bits are set */
1631 wmb();
1632 local_irq_restore(flags);
1633
1634 return count;
1635}
1636
13ab8448 1637static void altr_edac_a10_irq_handler(struct irq_desc *desc)
588cb03e 1638{
13ab8448
TT		 1639 int dberr, bit, sm_offset, irq_status;
1640 struct altr_arria10_edac *edac = irq_desc_get_handler_data(desc);
1641 struct irq_chip *chip = irq_desc_get_chip(desc);
1642 int irq = irq_desc_get_irq(desc);
1643
1644 dberr = (irq == edac->db_irq) ? 1 : 0;
1645 sm_offset = dberr ? A10_SYSMGR_ECC_INTSTAT_DERR_OFST :
1646 A10_SYSMGR_ECC_INTSTAT_SERR_OFST;
1647
1648 chained_irq_enter(chip, desc);
588cb03e
TT		 1649
1650 regmap_read(edac->ecc_mgr_map, sm_offset, &irq_status);
1651
13ab8448
TT		 1652 for_each_set_bit(bit, (unsigned long *)&irq_status, 32) {
1653 irq = irq_linear_revmap(edac->domain, dberr * 32 + bit);
1654 if (irq)
1655 generic_handle_irq(irq);
588cb03e
TT		 1656 }
1657
13ab8448 1658 chained_irq_exit(chip, desc);
588cb03e
TT		 1659}
1660
44ec9b30
TT		 1661static int validate_parent_available(struct device_node *np)
1662{
1663 struct device_node *parent;
1664 int ret = 0;
1665
1666 /* Ensure parent device is enabled if parent node exists */
1667 parent = of_parse_phandle(np, "altr,ecc-parent", 0);
1668 if (parent && !of_device_is_available(parent))
1669 ret = -ENODEV;
1670
1671 of_node_put(parent);
1672 return ret;
1673}
1674
588cb03e
TT		 1675static int altr_edac_a10_device_add(struct altr_arria10_edac *edac,
1676 struct device_node *np)
1677{
1678 struct edac_device_ctl_info *dci;
1679 struct altr_edac_device_dev *altdev;
1680 char *ecc_name = (char *)np->name;
1681 struct resource res;
1682 int edac_idx;
1683 int rc = 0;
1684 const struct edac_device_prv_data *prv;
1685 /* Get matching node and check for valid result */
1686 const struct of_device_id *pdev_id =
ab564cb5 1687 of_match_node(altr_edac_a10_device_of_match, np);
588cb03e
TT		 1688 if (IS_ERR_OR_NULL(pdev_id))
1689 return -ENODEV;
1690
1691 /* Get driver specific data for this EDAC device */
1692 prv = pdev_id->data;
1693 if (IS_ERR_OR_NULL(prv))
1694 return -ENODEV;
1695
44ec9b30
TT		 1696 if (validate_parent_available(np))
1697 return -ENODEV;
1698
588cb03e
TT		 1699 if (!devres_open_group(edac->dev, altr_edac_a10_device_add, GFP_KERNEL))
1700 return -ENOMEM;
1701
1702 rc = of_address_to_resource(np, 0, &res);
1703 if (rc < 0) {
1704 edac_printk(KERN_ERR, EDAC_DEVICE,
1705 "%s: no resource address\n", ecc_name);
1706 goto err_release_group;
1707 }
1708
1709 edac_idx = edac_device_alloc_index();
1710 dci = edac_device_alloc_ctl_info(sizeof(*altdev), ecc_name,
1711 1, ecc_name, 1, 0, NULL, 0,
1712 edac_idx);
1713
1714 if (!dci) {
1715 edac_printk(KERN_ERR, EDAC_DEVICE,
1716 "%s: Unable to allocate EDAC device\n", ecc_name);
1717 rc = -ENOMEM;
1718 goto err_release_group;
1719 }
1720
1721 altdev = dci->pvt_info;
1722 dci->dev = edac->dev;
1723 altdev->edac_dev_name = ecc_name;
1724 altdev->edac_idx = edac_idx;
1725 altdev->edac = edac;
1726 altdev->edac_dev = dci;
1727 altdev->data = prv;
1728 altdev->ddev = *edac->dev;
1729 dci->dev = &altdev->ddev;
1730 dci->ctl_name = "Altera ECC Manager";
1731 dci->mod_name = ecc_name;
1732 dci->dev_name = ecc_name;
1733
1734 altdev->base = devm_ioremap_resource(edac->dev, &res);
1735 if (IS_ERR(altdev->base)) {
1736 rc = PTR_ERR(altdev->base);
1737 goto err_release_group1;
1738 }
1739
1740 /* Check specific dependencies for the module */
1741 if (altdev->data->setup) {
1742 rc = altdev->data->setup(altdev);
1743 if (rc)
1744 goto err_release_group1;
1745 }
1746
13ab8448
TT		 1747 altdev->sb_irq = irq_of_parse_and_map(np, 0);
1748 if (!altdev->sb_irq) {
1749 edac_printk(KERN_ERR, EDAC_DEVICE, "Error allocating SBIRQ\n");
1750 rc = -ENODEV;
1751 goto err_release_group1;
1752 }
a29d64a4
TT		 1753 rc = devm_request_irq(edac->dev, altdev->sb_irq, prv->ecc_irq_handler,
1754 IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
1755 ecc_name, altdev);
13ab8448 1756 if (rc) {
3763569f 1757 edac_printk(KERN_ERR, EDAC_DEVICE, "No SBERR IRQ resource\n");
13ab8448
TT		 1758 goto err_release_group1;
1759 }
1760
1761 altdev->db_irq = irq_of_parse_and_map(np, 1);
1762 if (!altdev->db_irq) {
1763 edac_printk(KERN_ERR, EDAC_DEVICE, "Error allocating DBIRQ\n");
1764 rc = -ENODEV;
1765 goto err_release_group1;
1766 }
a29d64a4
TT		 1767 rc = devm_request_irq(edac->dev, altdev->db_irq, prv->ecc_irq_handler,
1768 IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
1769 ecc_name, altdev);
13ab8448
TT		 1770 if (rc) {
1771 edac_printk(KERN_ERR, EDAC_DEVICE, "No DBERR IRQ resource\n");
1772 goto err_release_group1;
1773 }
1774
588cb03e
TT		 1775 rc = edac_device_add_device(dci);
1776 if (rc) {
1777 dev_err(edac->dev, "edac_device_add_device failed\n");
1778 rc = -ENOMEM;
1779 goto err_release_group1;
1780 }
1781
1782 altr_create_edacdev_dbgfs(dci, prv);
1783
1784 list_add(&altdev->next, &edac->a10_ecc_devices);
1785
1786 devres_remove_group(edac->dev, altr_edac_a10_device_add);
1787
1788 return 0;
1789
1790err_release_group1:
1791 edac_device_free_ctl_info(dci);
1792err_release_group:
588cb03e
TT		 1793 devres_release_group(edac->dev, NULL);
1794 edac_printk(KERN_ERR, EDAC_DEVICE,
1795 "%s:Error setting up EDAC device: %d\n", ecc_name, rc);
1796
1797 return rc;
1798}
1799
13ab8448
TT		 1800static void a10_eccmgr_irq_mask(struct irq_data *d)
1801{
1802 struct altr_arria10_edac *edac = irq_data_get_irq_chip_data(d);
1803
1804 regmap_write(edac->ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_SET_OFST,
1805 BIT(d->hwirq));
1806}
1807
1808static void a10_eccmgr_irq_unmask(struct irq_data *d)
1809{
1810 struct altr_arria10_edac *edac = irq_data_get_irq_chip_data(d);
1811
1812 regmap_write(edac->ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_CLR_OFST,
1813 BIT(d->hwirq));
1814}
1815
1816static int a10_eccmgr_irqdomain_map(struct irq_domain *d, unsigned int irq,
1817 irq_hw_number_t hwirq)
1818{
1819 struct altr_arria10_edac *edac = d->host_data;
1820
1821 irq_set_chip_and_handler(irq, &edac->irq_chip, handle_simple_irq);
1822 irq_set_chip_data(irq, edac);
1823 irq_set_noprobe(irq);
1824
1825 return 0;
1826}
1827
9bcd919e 1828static struct irq_domain_ops a10_eccmgr_ic_ops = {
13ab8448
TT		 1829 .map = a10_eccmgr_irqdomain_map,
1830 .xlate = irq_domain_xlate_twocell,
1831};
1832
588cb03e
TT		 1833static int altr_edac_a10_probe(struct platform_device *pdev)
1834{
1835 struct altr_arria10_edac *edac;
1836 struct device_node *child;
588cb03e
TT		 1837
1838 edac = devm_kzalloc(&pdev->dev, sizeof(*edac), GFP_KERNEL);
1839 if (!edac)
1840 return -ENOMEM;
1841
1842 edac->dev = &pdev->dev;
1843 platform_set_drvdata(pdev, edac);
1844 INIT_LIST_HEAD(&edac->a10_ecc_devices);
1845
1846 edac->ecc_mgr_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1847 "altr,sysmgr-syscon");
1848 if (IS_ERR(edac->ecc_mgr_map)) {
1849 edac_printk(KERN_ERR, EDAC_DEVICE,
1850 "Unable to get syscon altr,sysmgr-syscon\n");
1851 return PTR_ERR(edac->ecc_mgr_map);
1852 }
1853
13ab8448
TT		 1854 edac->irq_chip.name = pdev->dev.of_node->name;
1855 edac->irq_chip.irq_mask = a10_eccmgr_irq_mask;
1856 edac->irq_chip.irq_unmask = a10_eccmgr_irq_unmask;
1857 edac->domain = irq_domain_add_linear(pdev->dev.of_node, 64,
1858 &a10_eccmgr_ic_ops, edac);
1859 if (!edac->domain) {
1860 dev_err(&pdev->dev, "Error adding IRQ domain\n");
1861 return -ENOMEM;
1862 }
1863
588cb03e 1864 edac->sb_irq = platform_get_irq(pdev, 0);
13ab8448
TT		 1865 if (edac->sb_irq < 0) {
1866 dev_err(&pdev->dev, "No SBERR IRQ resource\n");
1867 return edac->sb_irq;
588cb03e
TT		 1868 }
1869
13ab8448
TT		 1870 irq_set_chained_handler_and_data(edac->sb_irq,
1871 altr_edac_a10_irq_handler,
1872 edac);
1873
588cb03e 1874 edac->db_irq = platform_get_irq(pdev, 1);
13ab8448
TT		 1875 if (edac->db_irq < 0) {
1876 dev_err(&pdev->dev, "No DBERR IRQ resource\n");
1877 return edac->db_irq;
588cb03e 1878 }
13ab8448
TT		 1879 irq_set_chained_handler_and_data(edac->db_irq,
1880 altr_edac_a10_irq_handler,
1881 edac);
588cb03e
TT		 1882
1883 for_each_child_of_node(pdev->dev.of_node, child) {
1884 if (!of_device_is_available(child))
1885 continue;
c6882fb2
TT		 1886
1887 if (of_device_is_compatible(child, "altr,socfpga-a10-l2-ecc") ||
1888 of_device_is_compatible(child, "altr,socfpga-a10-ocram-ecc") ||
1889 of_device_is_compatible(child, "altr,socfpga-eth-mac-ecc") ||
e8263793 1890 of_device_is_compatible(child, "altr,socfpga-nand-ecc") ||
c609581d 1891 of_device_is_compatible(child, "altr,socfpga-dma-ecc") ||
485fe9e2 1892 of_device_is_compatible(child, "altr,socfpga-usb-ecc") ||
91104984
TT		 1893 of_device_is_compatible(child, "altr,socfpga-qspi-ecc") ||
1894 of_device_is_compatible(child, "altr,socfpga-sdmmc-ecc"))
c6882fb2 1895
c7b4be8d 1896 altr_edac_a10_device_add(edac, child);
c6882fb2
TT		 1897
1898 else if (of_device_is_compatible(child, "altr,sdram-edac-a10"))
ab564cb5
TT		 1899 of_platform_populate(pdev->dev.of_node,
1900 altr_sdram_ctrl_of_match,
1901 NULL, &pdev->dev);
588cb03e
TT		 1902 }
1903
1904 return 0;
1905}
1906
1907static const struct of_device_id altr_edac_a10_of_match[] = {
1908 { .compatible = "altr,socfpga-a10-ecc-manager" },
1909 {},
1910};
1911MODULE_DEVICE_TABLE(of, altr_edac_a10_of_match);
1912
1913static struct platform_driver altr_edac_a10_driver = {
1914 .probe = altr_edac_a10_probe,
1915 .driver = {
1916 .name = "socfpga_a10_ecc_manager",
1917 .of_match_table = altr_edac_a10_of_match,
1918 },
1919};
1920module_platform_driver(altr_edac_a10_driver);
1921
71bcada8
TT		 1922MODULE_LICENSE("GPL v2");
1923MODULE_AUTHOR("Thor Thayer");
c3eea194 1924MODULE_DESCRIPTION("EDAC Driver for Altera Memories");
ubuntu-zesty-kernel mirror