blob: 84798536b6a84dc691529c472700de3e192377f3 [file] [log] [blame]
Thor Thayer71bcada2014-09-03 10:27:54 -05001/*
Thor Thayerc3eea192016-02-10 13:26:21 -06002 * Copyright Altera Corporation (C) 2014-2016. All rights reserved.
Thor Thayer71bcada2014-09-03 10:27:54 -05003 * 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
Thor Thayerc3eea192016-02-10 13:26:21 -060020#include <asm/cacheflush.h>
Thor Thayer71bcada2014-09-03 10:27:54 -050021#include <linux/ctype.h>
Thor Thayer1166fde92016-06-22 08:58:57 -050022#include <linux/delay.h>
Thor Thayer71bcada2014-09-03 10:27:54 -050023#include <linux/edac.h>
Thor Thayerc3eea192016-02-10 13:26:21 -060024#include <linux/genalloc.h>
Thor Thayer71bcada2014-09-03 10:27:54 -050025#include <linux/interrupt.h>
Thor Thayer13ab8442016-06-07 15:35:57 -050026#include <linux/irqchip/chained_irq.h>
Thor Thayer71bcada2014-09-03 10:27:54 -050027#include <linux/kernel.h>
28#include <linux/mfd/syscon.h>
Thor Thayer588cb032016-03-21 11:01:44 -050029#include <linux/of_address.h>
Thor Thayer13ab8442016-06-07 15:35:57 -050030#include <linux/of_irq.h>
Thor Thayer71bcada2014-09-03 10:27:54 -050031#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
Thor Thayer143f4a52015-06-04 09:28:46 -050037#include "altera_edac.h"
Thor Thayer71bcada2014-09-03 10:27:54 -050038#include "edac_core.h"
39#include "edac_module.h"
40
41#define EDAC_MOD_STR "altera_edac"
42#define EDAC_VERSION "1"
Thor Thayerc3eea192016-02-10 13:26:21 -060043#define EDAC_DEVICE "Altera"
Thor Thayer71bcada2014-09-03 10:27:54 -050044
Thor Thayer143f4a52015-06-04 09:28:46 -050045static const struct altr_sdram_prv_data c5_data = {
46 .ecc_ctrl_offset = CV_CTLCFG_OFST,
47 .ecc_ctl_en_mask = CV_CTLCFG_ECC_AUTO_EN,
48 .ecc_stat_offset = CV_DRAMSTS_OFST,
49 .ecc_stat_ce_mask = CV_DRAMSTS_SBEERR,
50 .ecc_stat_ue_mask = CV_DRAMSTS_DBEERR,
51 .ecc_saddr_offset = CV_ERRADDR_OFST,
Thor Thayer73bcc942015-06-04 09:28:47 -050052 .ecc_daddr_offset = CV_ERRADDR_OFST,
Thor Thayer143f4a52015-06-04 09:28:46 -050053 .ecc_cecnt_offset = CV_SBECOUNT_OFST,
54 .ecc_uecnt_offset = CV_DBECOUNT_OFST,
55 .ecc_irq_en_offset = CV_DRAMINTR_OFST,
56 .ecc_irq_en_mask = CV_DRAMINTR_INTREN,
57 .ecc_irq_clr_offset = CV_DRAMINTR_OFST,
58 .ecc_irq_clr_mask = (CV_DRAMINTR_INTRCLR | CV_DRAMINTR_INTREN),
59 .ecc_cnt_rst_offset = CV_DRAMINTR_OFST,
60 .ecc_cnt_rst_mask = CV_DRAMINTR_INTRCLR,
Thor Thayer143f4a52015-06-04 09:28:46 -050061 .ce_ue_trgr_offset = CV_CTLCFG_OFST,
62 .ce_set_mask = CV_CTLCFG_GEN_SB_ERR,
63 .ue_set_mask = CV_CTLCFG_GEN_DB_ERR,
Thor Thayer71bcada2014-09-03 10:27:54 -050064};
65
Thor Thayer73bcc942015-06-04 09:28:47 -050066static const struct altr_sdram_prv_data a10_data = {
67 .ecc_ctrl_offset = A10_ECCCTRL1_OFST,
68 .ecc_ctl_en_mask = A10_ECCCTRL1_ECC_EN,
69 .ecc_stat_offset = A10_INTSTAT_OFST,
70 .ecc_stat_ce_mask = A10_INTSTAT_SBEERR,
71 .ecc_stat_ue_mask = A10_INTSTAT_DBEERR,
72 .ecc_saddr_offset = A10_SERRADDR_OFST,
73 .ecc_daddr_offset = A10_DERRADDR_OFST,
74 .ecc_irq_en_offset = A10_ERRINTEN_OFST,
75 .ecc_irq_en_mask = A10_ECC_IRQ_EN_MASK,
76 .ecc_irq_clr_offset = A10_INTSTAT_OFST,
77 .ecc_irq_clr_mask = (A10_INTSTAT_SBEERR | A10_INTSTAT_DBEERR),
78 .ecc_cnt_rst_offset = A10_ECCCTRL1_OFST,
79 .ecc_cnt_rst_mask = A10_ECC_CNT_RESET_MASK,
Thor Thayer73bcc942015-06-04 09:28:47 -050080 .ce_ue_trgr_offset = A10_DIAGINTTEST_OFST,
81 .ce_set_mask = A10_DIAGINT_TSERRA_MASK,
82 .ue_set_mask = A10_DIAGINT_TDERRA_MASK,
Thor Thayer73bcc942015-06-04 09:28:47 -050083};
84
Thor Thayerc3eea192016-02-10 13:26:21 -060085/*********************** EDAC Memory Controller Functions ****************/
86
87/* The SDRAM controller uses the EDAC Memory Controller framework. */
88
Thor Thayer71bcada2014-09-03 10:27:54 -050089static irqreturn_t altr_sdram_mc_err_handler(int irq, void *dev_id)
90{
91 struct mem_ctl_info *mci = dev_id;
92 struct altr_sdram_mc_data *drvdata = mci->pvt_info;
Thor Thayer143f4a52015-06-04 09:28:46 -050093 const struct altr_sdram_prv_data *priv = drvdata->data;
Thor Thayer73bcc942015-06-04 09:28:47 -050094 u32 status, err_count = 1, err_addr;
Thor Thayer71bcada2014-09-03 10:27:54 -050095
Thor Thayer143f4a52015-06-04 09:28:46 -050096 regmap_read(drvdata->mc_vbase, priv->ecc_stat_offset, &status);
Thor Thayer71bcada2014-09-03 10:27:54 -050097
Thor Thayer143f4a52015-06-04 09:28:46 -050098 if (status & priv->ecc_stat_ue_mask) {
Thor Thayer73bcc942015-06-04 09:28:47 -050099 regmap_read(drvdata->mc_vbase, priv->ecc_daddr_offset,
100 &err_addr);
101 if (priv->ecc_uecnt_offset)
102 regmap_read(drvdata->mc_vbase, priv->ecc_uecnt_offset,
103 &err_count);
Thor Thayer71bcada2014-09-03 10:27:54 -0500104 panic("\nEDAC: [%d Uncorrectable errors @ 0x%08X]\n",
105 err_count, err_addr);
106 }
Thor Thayer143f4a52015-06-04 09:28:46 -0500107 if (status & priv->ecc_stat_ce_mask) {
Thor Thayer73bcc942015-06-04 09:28:47 -0500108 regmap_read(drvdata->mc_vbase, priv->ecc_saddr_offset,
109 &err_addr);
110 if (priv->ecc_uecnt_offset)
111 regmap_read(drvdata->mc_vbase, priv->ecc_cecnt_offset,
112 &err_count);
Thor Thayer71bcada2014-09-03 10:27:54 -0500113 edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, err_count,
114 err_addr >> PAGE_SHIFT,
115 err_addr & ~PAGE_MASK, 0,
116 0, 0, -1, mci->ctl_name, "");
Thor Thayer73bcc942015-06-04 09:28:47 -0500117 /* Clear IRQ to resume */
118 regmap_write(drvdata->mc_vbase, priv->ecc_irq_clr_offset,
119 priv->ecc_irq_clr_mask);
120
121 return IRQ_HANDLED;
Thor Thayer71bcada2014-09-03 10:27:54 -0500122 }
Thor Thayer73bcc942015-06-04 09:28:47 -0500123 return IRQ_NONE;
Thor Thayer71bcada2014-09-03 10:27:54 -0500124}
125
Thor Thayer71bcada2014-09-03 10:27:54 -0500126static ssize_t altr_sdr_mc_err_inject_write(struct file *file,
127 const char __user *data,
128 size_t count, loff_t *ppos)
129{
130 struct mem_ctl_info *mci = file->private_data;
131 struct altr_sdram_mc_data *drvdata = mci->pvt_info;
Thor Thayer143f4a52015-06-04 09:28:46 -0500132 const struct altr_sdram_prv_data *priv = drvdata->data;
Thor Thayer71bcada2014-09-03 10:27:54 -0500133 u32 *ptemp;
134 dma_addr_t dma_handle;
135 u32 reg, read_reg;
136
137 ptemp = dma_alloc_coherent(mci->pdev, 16, &dma_handle, GFP_KERNEL);
138 if (!ptemp) {
139 dma_free_coherent(mci->pdev, 16, ptemp, dma_handle);
140 edac_printk(KERN_ERR, EDAC_MC,
141 "Inject: Buffer Allocation error\n");
142 return -ENOMEM;
143 }
144
Thor Thayer143f4a52015-06-04 09:28:46 -0500145 regmap_read(drvdata->mc_vbase, priv->ce_ue_trgr_offset,
146 &read_reg);
147 read_reg &= ~(priv->ce_set_mask | priv->ue_set_mask);
Thor Thayer71bcada2014-09-03 10:27:54 -0500148
149 /* Error are injected by writing a word while the SBE or DBE
150 * bit in the CTLCFG register is set. Reading the word will
151 * trigger the SBE or DBE error and the corresponding IRQ.
152 */
153 if (count == 3) {
154 edac_printk(KERN_ALERT, EDAC_MC,
155 "Inject Double bit error\n");
Thor Thayer143f4a52015-06-04 09:28:46 -0500156 regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset,
157 (read_reg | priv->ue_set_mask));
Thor Thayer71bcada2014-09-03 10:27:54 -0500158 } else {
159 edac_printk(KERN_ALERT, EDAC_MC,
160 "Inject Single bit error\n");
Thor Thayer143f4a52015-06-04 09:28:46 -0500161 regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset,
162 (read_reg | priv->ce_set_mask));
Thor Thayer71bcada2014-09-03 10:27:54 -0500163 }
164
165 ptemp[0] = 0x5A5A5A5A;
166 ptemp[1] = 0xA5A5A5A5;
167
168 /* Clear the error injection bits */
Thor Thayer143f4a52015-06-04 09:28:46 -0500169 regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset, read_reg);
Thor Thayer71bcada2014-09-03 10:27:54 -0500170 /* Ensure it has been written out */
171 wmb();
172
173 /*
174 * To trigger the error, we need to read the data back
175 * (the data was written with errors above).
176 * The ACCESS_ONCE macros and printk are used to prevent the
177 * the compiler optimizing these reads out.
178 */
179 reg = ACCESS_ONCE(ptemp[0]);
180 read_reg = ACCESS_ONCE(ptemp[1]);
181 /* Force Read */
182 rmb();
183
184 edac_printk(KERN_ALERT, EDAC_MC, "Read Data [0x%X, 0x%X]\n",
185 reg, read_reg);
186
187 dma_free_coherent(mci->pdev, 16, ptemp, dma_handle);
188
189 return count;
190}
191
192static const struct file_operations altr_sdr_mc_debug_inject_fops = {
193 .open = simple_open,
194 .write = altr_sdr_mc_err_inject_write,
195 .llseek = generic_file_llseek,
196};
197
198static void altr_sdr_mc_create_debugfs_nodes(struct mem_ctl_info *mci)
199{
Borislav Petkovbba3b312015-09-22 12:27:29 +0200200 if (!IS_ENABLED(CONFIG_EDAC_DEBUG))
201 return;
202
203 if (!mci->debugfs)
204 return;
205
206 edac_debugfs_create_file("inject_ctrl", S_IWUSR, mci->debugfs, mci,
207 &altr_sdr_mc_debug_inject_fops);
Thor Thayer71bcada2014-09-03 10:27:54 -0500208}
Thor Thayer71bcada2014-09-03 10:27:54 -0500209
Thor Thayerf9ae4872015-06-04 09:28:45 -0500210/* Get total memory size from Open Firmware DTB */
211static unsigned long get_total_mem(void)
Thor Thayer71bcada2014-09-03 10:27:54 -0500212{
Thor Thayerf9ae4872015-06-04 09:28:45 -0500213 struct device_node *np = NULL;
214 const unsigned int *reg, *reg_end;
215 int len, sw, aw;
216 unsigned long start, size, total_mem = 0;
Thor Thayer71bcada2014-09-03 10:27:54 -0500217
Thor Thayerf9ae4872015-06-04 09:28:45 -0500218 for_each_node_by_type(np, "memory") {
219 aw = of_n_addr_cells(np);
220 sw = of_n_size_cells(np);
221 reg = (const unsigned int *)of_get_property(np, "reg", &len);
222 reg_end = reg + (len / sizeof(u32));
Thor Thayer71bcada2014-09-03 10:27:54 -0500223
Thor Thayerf9ae4872015-06-04 09:28:45 -0500224 total_mem = 0;
225 do {
226 start = of_read_number(reg, aw);
227 reg += aw;
228 size = of_read_number(reg, sw);
229 reg += sw;
230 total_mem += size;
231 } while (reg < reg_end);
232 }
233 edac_dbg(0, "total_mem 0x%lx\n", total_mem);
234 return total_mem;
Thor Thayer71bcada2014-09-03 10:27:54 -0500235}
236
Thor Thayer143f4a52015-06-04 09:28:46 -0500237static const struct of_device_id altr_sdram_ctrl_of_match[] = {
Arnd Bergmann2c911f62016-04-16 22:13:55 +0200238 { .compatible = "altr,sdram-edac", .data = &c5_data},
239 { .compatible = "altr,sdram-edac-a10", .data = &a10_data},
Thor Thayer143f4a52015-06-04 09:28:46 -0500240 {},
241};
242MODULE_DEVICE_TABLE(of, altr_sdram_ctrl_of_match);
243
Thor Thayer73bcc942015-06-04 09:28:47 -0500244static int a10_init(struct regmap *mc_vbase)
245{
246 if (regmap_update_bits(mc_vbase, A10_INTMODE_OFST,
247 A10_INTMODE_SB_INT, A10_INTMODE_SB_INT)) {
248 edac_printk(KERN_ERR, EDAC_MC,
249 "Error setting SB IRQ mode\n");
250 return -ENODEV;
251 }
252
253 if (regmap_write(mc_vbase, A10_SERRCNTREG_OFST, 1)) {
254 edac_printk(KERN_ERR, EDAC_MC,
255 "Error setting trigger count\n");
256 return -ENODEV;
257 }
258
259 return 0;
260}
261
262static int a10_unmask_irq(struct platform_device *pdev, u32 mask)
263{
264 void __iomem *sm_base;
265 int ret = 0;
266
267 if (!request_mem_region(A10_SYMAN_INTMASK_CLR, sizeof(u32),
268 dev_name(&pdev->dev))) {
269 edac_printk(KERN_ERR, EDAC_MC,
270 "Unable to request mem region\n");
271 return -EBUSY;
272 }
273
274 sm_base = ioremap(A10_SYMAN_INTMASK_CLR, sizeof(u32));
275 if (!sm_base) {
276 edac_printk(KERN_ERR, EDAC_MC,
277 "Unable to ioremap device\n");
278
279 ret = -ENOMEM;
280 goto release;
281 }
282
283 iowrite32(mask, sm_base);
284
285 iounmap(sm_base);
286
287release:
288 release_mem_region(A10_SYMAN_INTMASK_CLR, sizeof(u32));
289
290 return ret;
291}
292
Thor Thayer71bcada2014-09-03 10:27:54 -0500293static int altr_sdram_probe(struct platform_device *pdev)
294{
Thor Thayer143f4a52015-06-04 09:28:46 -0500295 const struct of_device_id *id;
Thor Thayer71bcada2014-09-03 10:27:54 -0500296 struct edac_mc_layer layers[2];
297 struct mem_ctl_info *mci;
298 struct altr_sdram_mc_data *drvdata;
Thor Thayer143f4a52015-06-04 09:28:46 -0500299 const struct altr_sdram_prv_data *priv;
Thor Thayer71bcada2014-09-03 10:27:54 -0500300 struct regmap *mc_vbase;
301 struct dimm_info *dimm;
Thor Thayer143f4a52015-06-04 09:28:46 -0500302 u32 read_reg;
Thor Thayer73bcc942015-06-04 09:28:47 -0500303 int irq, irq2, res = 0;
304 unsigned long mem_size, irqflags = 0;
Thor Thayer71bcada2014-09-03 10:27:54 -0500305
Thor Thayer143f4a52015-06-04 09:28:46 -0500306 id = of_match_device(altr_sdram_ctrl_of_match, &pdev->dev);
307 if (!id)
308 return -ENODEV;
309
Thor Thayer71bcada2014-09-03 10:27:54 -0500310 /* Grab the register range from the sdr controller in device tree */
311 mc_vbase = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
312 "altr,sdr-syscon");
313 if (IS_ERR(mc_vbase)) {
314 edac_printk(KERN_ERR, EDAC_MC,
315 "regmap for altr,sdr-syscon lookup failed.\n");
316 return -ENODEV;
317 }
318
Thor Thayer143f4a52015-06-04 09:28:46 -0500319 /* Check specific dependencies for the module */
320 priv = of_match_node(altr_sdram_ctrl_of_match,
321 pdev->dev.of_node)->data;
322
323 /* Validate the SDRAM controller has ECC enabled */
324 if (regmap_read(mc_vbase, priv->ecc_ctrl_offset, &read_reg) ||
325 ((read_reg & priv->ecc_ctl_en_mask) != priv->ecc_ctl_en_mask)) {
Thor Thayer71bcada2014-09-03 10:27:54 -0500326 edac_printk(KERN_ERR, EDAC_MC,
327 "No ECC/ECC disabled [0x%08X]\n", read_reg);
328 return -ENODEV;
329 }
330
331 /* Grab memory size from device tree. */
Thor Thayerf9ae4872015-06-04 09:28:45 -0500332 mem_size = get_total_mem();
Thor Thayer71bcada2014-09-03 10:27:54 -0500333 if (!mem_size) {
Thor Thayerf9ae4872015-06-04 09:28:45 -0500334 edac_printk(KERN_ERR, EDAC_MC, "Unable to calculate memory size\n");
Thor Thayer71bcada2014-09-03 10:27:54 -0500335 return -ENODEV;
336 }
337
Thor Thayer143f4a52015-06-04 09:28:46 -0500338 /* Ensure the SDRAM Interrupt is disabled */
339 if (regmap_update_bits(mc_vbase, priv->ecc_irq_en_offset,
340 priv->ecc_irq_en_mask, 0)) {
Thor Thayer71bcada2014-09-03 10:27:54 -0500341 edac_printk(KERN_ERR, EDAC_MC,
Thor Thayer143f4a52015-06-04 09:28:46 -0500342 "Error disabling SDRAM ECC IRQ\n");
343 return -ENODEV;
344 }
345
346 /* Toggle to clear the SDRAM Error count */
347 if (regmap_update_bits(mc_vbase, priv->ecc_cnt_rst_offset,
348 priv->ecc_cnt_rst_mask,
349 priv->ecc_cnt_rst_mask)) {
350 edac_printk(KERN_ERR, EDAC_MC,
351 "Error clearing SDRAM ECC count\n");
352 return -ENODEV;
353 }
354
355 if (regmap_update_bits(mc_vbase, priv->ecc_cnt_rst_offset,
356 priv->ecc_cnt_rst_mask, 0)) {
357 edac_printk(KERN_ERR, EDAC_MC,
358 "Error clearing SDRAM ECC count\n");
Thor Thayer71bcada2014-09-03 10:27:54 -0500359 return -ENODEV;
360 }
361
362 irq = platform_get_irq(pdev, 0);
363 if (irq < 0) {
364 edac_printk(KERN_ERR, EDAC_MC,
365 "No irq %d in DT\n", irq);
366 return -ENODEV;
367 }
368
Thor Thayer73bcc942015-06-04 09:28:47 -0500369 /* Arria10 has a 2nd IRQ */
370 irq2 = platform_get_irq(pdev, 1);
371
Thor Thayer71bcada2014-09-03 10:27:54 -0500372 layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
373 layers[0].size = 1;
374 layers[0].is_virt_csrow = true;
375 layers[1].type = EDAC_MC_LAYER_CHANNEL;
376 layers[1].size = 1;
377 layers[1].is_virt_csrow = false;
378 mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers,
379 sizeof(struct altr_sdram_mc_data));
380 if (!mci)
381 return -ENOMEM;
382
383 mci->pdev = &pdev->dev;
384 drvdata = mci->pvt_info;
385 drvdata->mc_vbase = mc_vbase;
Thor Thayer143f4a52015-06-04 09:28:46 -0500386 drvdata->data = priv;
Thor Thayer71bcada2014-09-03 10:27:54 -0500387 platform_set_drvdata(pdev, mci);
388
389 if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
Thor Thayer143f4a52015-06-04 09:28:46 -0500390 edac_printk(KERN_ERR, EDAC_MC,
391 "Unable to get managed device resource\n");
Thor Thayer71bcada2014-09-03 10:27:54 -0500392 res = -ENOMEM;
393 goto free;
394 }
395
396 mci->mtype_cap = MEM_FLAG_DDR3;
397 mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED;
398 mci->edac_cap = EDAC_FLAG_SECDED;
399 mci->mod_name = EDAC_MOD_STR;
400 mci->mod_ver = EDAC_VERSION;
401 mci->ctl_name = dev_name(&pdev->dev);
402 mci->scrub_mode = SCRUB_SW_SRC;
403 mci->dev_name = dev_name(&pdev->dev);
404
405 dimm = *mci->dimms;
406 dimm->nr_pages = ((mem_size - 1) >> PAGE_SHIFT) + 1;
407 dimm->grain = 8;
408 dimm->dtype = DEV_X8;
409 dimm->mtype = MEM_DDR3;
410 dimm->edac_mode = EDAC_SECDED;
411
412 res = edac_mc_add_mc(mci);
413 if (res < 0)
414 goto err;
415
Thor Thayer73bcc942015-06-04 09:28:47 -0500416 /* Only the Arria10 has separate IRQs */
417 if (irq2 > 0) {
418 /* Arria10 specific initialization */
419 res = a10_init(mc_vbase);
420 if (res < 0)
421 goto err2;
422
423 res = devm_request_irq(&pdev->dev, irq2,
424 altr_sdram_mc_err_handler,
425 IRQF_SHARED, dev_name(&pdev->dev), mci);
426 if (res < 0) {
427 edac_mc_printk(mci, KERN_ERR,
428 "Unable to request irq %d\n", irq2);
429 res = -ENODEV;
430 goto err2;
431 }
432
433 res = a10_unmask_irq(pdev, A10_DDR0_IRQ_MASK);
434 if (res < 0)
435 goto err2;
436
437 irqflags = IRQF_SHARED;
438 }
439
Thor Thayer71bcada2014-09-03 10:27:54 -0500440 res = devm_request_irq(&pdev->dev, irq, altr_sdram_mc_err_handler,
Thor Thayer73bcc942015-06-04 09:28:47 -0500441 irqflags, dev_name(&pdev->dev), mci);
Thor Thayer71bcada2014-09-03 10:27:54 -0500442 if (res < 0) {
443 edac_mc_printk(mci, KERN_ERR,
444 "Unable to request irq %d\n", irq);
445 res = -ENODEV;
446 goto err2;
447 }
448
Thor Thayer143f4a52015-06-04 09:28:46 -0500449 /* Infrastructure ready - enable the IRQ */
450 if (regmap_update_bits(drvdata->mc_vbase, priv->ecc_irq_en_offset,
451 priv->ecc_irq_en_mask, priv->ecc_irq_en_mask)) {
Thor Thayer71bcada2014-09-03 10:27:54 -0500452 edac_mc_printk(mci, KERN_ERR,
453 "Error enabling SDRAM ECC IRQ\n");
454 res = -ENODEV;
455 goto err2;
456 }
457
458 altr_sdr_mc_create_debugfs_nodes(mci);
459
460 devres_close_group(&pdev->dev, NULL);
461
462 return 0;
463
464err2:
465 edac_mc_del_mc(&pdev->dev);
466err:
467 devres_release_group(&pdev->dev, NULL);
468free:
469 edac_mc_free(mci);
470 edac_printk(KERN_ERR, EDAC_MC,
471 "EDAC Probe Failed; Error %d\n", res);
472
473 return res;
474}
475
476static int altr_sdram_remove(struct platform_device *pdev)
477{
478 struct mem_ctl_info *mci = platform_get_drvdata(pdev);
479
480 edac_mc_del_mc(&pdev->dev);
481 edac_mc_free(mci);
482 platform_set_drvdata(pdev, NULL);
483
484 return 0;
485}
486
Alan Tull6f2b6422015-06-05 08:49:15 -0500487/*
488 * If you want to suspend, need to disable EDAC by removing it
489 * from the device tree or defconfig.
490 */
491#ifdef CONFIG_PM
492static int altr_sdram_prepare(struct device *dev)
493{
494 pr_err("Suspend not allowed when EDAC is enabled.\n");
495
496 return -EPERM;
497}
498
499static const struct dev_pm_ops altr_sdram_pm_ops = {
500 .prepare = altr_sdram_prepare,
501};
502#endif
503
Thor Thayer71bcada2014-09-03 10:27:54 -0500504static struct platform_driver altr_sdram_edac_driver = {
505 .probe = altr_sdram_probe,
506 .remove = altr_sdram_remove,
507 .driver = {
508 .name = "altr_sdram_edac",
Alan Tull6f2b6422015-06-05 08:49:15 -0500509#ifdef CONFIG_PM
510 .pm = &altr_sdram_pm_ops,
511#endif
Thor Thayer71bcada2014-09-03 10:27:54 -0500512 .of_match_table = altr_sdram_ctrl_of_match,
513 },
514};
515
516module_platform_driver(altr_sdram_edac_driver);
517
Thor Thayerc3eea192016-02-10 13:26:21 -0600518/************************* EDAC Parent Probe *************************/
519
520static const struct of_device_id altr_edac_device_of_match[];
521
522static const struct of_device_id altr_edac_of_match[] = {
523 { .compatible = "altr,socfpga-ecc-manager" },
524 {},
525};
526MODULE_DEVICE_TABLE(of, altr_edac_of_match);
527
528static int altr_edac_probe(struct platform_device *pdev)
529{
530 of_platform_populate(pdev->dev.of_node, altr_edac_device_of_match,
531 NULL, &pdev->dev);
532 return 0;
533}
534
535static struct platform_driver altr_edac_driver = {
536 .probe = altr_edac_probe,
537 .driver = {
538 .name = "socfpga_ecc_manager",
539 .of_match_table = altr_edac_of_match,
540 },
541};
542module_platform_driver(altr_edac_driver);
543
544/************************* EDAC Device Functions *************************/
545
546/*
547 * EDAC Device Functions (shared between various IPs).
548 * The discrete memories use the EDAC Device framework. The probe
549 * and error handling functions are very similar between memories
550 * so they are shared. The memory allocation and freeing for EDAC
551 * trigger testing are different for each memory.
552 */
553
Thor Thayer1cf70372016-06-22 08:58:54 -0500554static const struct edac_device_prv_data ocramecc_data;
555static const struct edac_device_prv_data l2ecc_data;
556static const struct edac_device_prv_data a10_ocramecc_data;
557static const struct edac_device_prv_data a10_l2ecc_data;
Thor Thayerc3eea192016-02-10 13:26:21 -0600558
Thor Thayerc3eea192016-02-10 13:26:21 -0600559static irqreturn_t altr_edac_device_handler(int irq, void *dev_id)
560{
561 irqreturn_t ret_value = IRQ_NONE;
562 struct edac_device_ctl_info *dci = dev_id;
563 struct altr_edac_device_dev *drvdata = dci->pvt_info;
564 const struct edac_device_prv_data *priv = drvdata->data;
565
566 if (irq == drvdata->sb_irq) {
567 if (priv->ce_clear_mask)
568 writel(priv->ce_clear_mask, drvdata->base);
569 edac_device_handle_ce(dci, 0, 0, drvdata->edac_dev_name);
570 ret_value = IRQ_HANDLED;
571 } else if (irq == drvdata->db_irq) {
572 if (priv->ue_clear_mask)
573 writel(priv->ue_clear_mask, drvdata->base);
574 edac_device_handle_ue(dci, 0, 0, drvdata->edac_dev_name);
575 panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
576 ret_value = IRQ_HANDLED;
577 } else {
578 WARN_ON(1);
579 }
580
581 return ret_value;
582}
583
584static ssize_t altr_edac_device_trig(struct file *file,
585 const char __user *user_buf,
586 size_t count, loff_t *ppos)
587
588{
589 u32 *ptemp, i, error_mask;
590 int result = 0;
591 u8 trig_type;
592 unsigned long flags;
593 struct edac_device_ctl_info *edac_dci = file->private_data;
594 struct altr_edac_device_dev *drvdata = edac_dci->pvt_info;
595 const struct edac_device_prv_data *priv = drvdata->data;
596 void *generic_ptr = edac_dci->dev;
597
598 if (!user_buf || get_user(trig_type, user_buf))
599 return -EFAULT;
600
601 if (!priv->alloc_mem)
602 return -ENOMEM;
603
604 /*
605 * Note that generic_ptr is initialized to the device * but in
606 * some alloc_functions, this is overridden and returns data.
607 */
608 ptemp = priv->alloc_mem(priv->trig_alloc_sz, &generic_ptr);
609 if (!ptemp) {
610 edac_printk(KERN_ERR, EDAC_DEVICE,
611 "Inject: Buffer Allocation error\n");
612 return -ENOMEM;
613 }
614
615 if (trig_type == ALTR_UE_TRIGGER_CHAR)
616 error_mask = priv->ue_set_mask;
617 else
618 error_mask = priv->ce_set_mask;
619
620 edac_printk(KERN_ALERT, EDAC_DEVICE,
621 "Trigger Error Mask (0x%X)\n", error_mask);
622
623 local_irq_save(flags);
624 /* write ECC corrupted data out. */
625 for (i = 0; i < (priv->trig_alloc_sz / sizeof(*ptemp)); i++) {
626 /* Read data so we're in the correct state */
627 rmb();
628 if (ACCESS_ONCE(ptemp[i]))
629 result = -1;
630 /* Toggle Error bit (it is latched), leave ECC enabled */
Thor Thayer811fce42016-03-21 11:01:42 -0500631 writel(error_mask, (drvdata->base + priv->set_err_ofst));
632 writel(priv->ecc_enable_mask, (drvdata->base +
633 priv->set_err_ofst));
Thor Thayerc3eea192016-02-10 13:26:21 -0600634 ptemp[i] = i;
635 }
636 /* Ensure it has been written out */
637 wmb();
638 local_irq_restore(flags);
639
640 if (result)
641 edac_printk(KERN_ERR, EDAC_DEVICE, "Mem Not Cleared\n");
642
643 /* Read out written data. ECC error caused here */
644 for (i = 0; i < ALTR_TRIGGER_READ_WRD_CNT; i++)
645 if (ACCESS_ONCE(ptemp[i]) != i)
646 edac_printk(KERN_ERR, EDAC_DEVICE,
647 "Read doesn't match written data\n");
648
649 if (priv->free_mem)
650 priv->free_mem(ptemp, priv->trig_alloc_sz, generic_ptr);
651
652 return count;
653}
654
655static const struct file_operations altr_edac_device_inject_fops = {
656 .open = simple_open,
657 .write = altr_edac_device_trig,
658 .llseek = generic_file_llseek,
659};
660
Thor Thayerc7b4be82016-04-06 20:22:54 -0500661static ssize_t altr_edac_a10_device_trig(struct file *file,
662 const char __user *user_buf,
663 size_t count, loff_t *ppos);
664
665static const struct file_operations altr_edac_a10_device_inject_fops = {
666 .open = simple_open,
667 .write = altr_edac_a10_device_trig,
668 .llseek = generic_file_llseek,
669};
670
Thor Thayerc3eea192016-02-10 13:26:21 -0600671static void altr_create_edacdev_dbgfs(struct edac_device_ctl_info *edac_dci,
672 const struct edac_device_prv_data *priv)
673{
674 struct altr_edac_device_dev *drvdata = edac_dci->pvt_info;
675
676 if (!IS_ENABLED(CONFIG_EDAC_DEBUG))
677 return;
678
679 drvdata->debugfs_dir = edac_debugfs_create_dir(drvdata->edac_dev_name);
680 if (!drvdata->debugfs_dir)
681 return;
682
683 if (!edac_debugfs_create_file(priv->dbgfs_name, S_IWUSR,
684 drvdata->debugfs_dir, edac_dci,
Thor Thayere17ced22016-03-31 13:48:01 -0500685 priv->inject_fops))
Thor Thayerc3eea192016-02-10 13:26:21 -0600686 debugfs_remove_recursive(drvdata->debugfs_dir);
687}
688
689static const struct of_device_id altr_edac_device_of_match[] = {
690#ifdef CONFIG_EDAC_ALTERA_L2C
Arnd Bergmann2c911f62016-04-16 22:13:55 +0200691 { .compatible = "altr,socfpga-l2-ecc", .data = &l2ecc_data },
Thor Thayerc3eea192016-02-10 13:26:21 -0600692#endif
693#ifdef CONFIG_EDAC_ALTERA_OCRAM
Arnd Bergmann2c911f62016-04-16 22:13:55 +0200694 { .compatible = "altr,socfpga-ocram-ecc", .data = &ocramecc_data },
Thor Thayerc3eea192016-02-10 13:26:21 -0600695#endif
696 {},
697};
698MODULE_DEVICE_TABLE(of, altr_edac_device_of_match);
699
700/*
701 * altr_edac_device_probe()
702 * This is a generic EDAC device driver that will support
703 * various Altera memory devices such as the L2 cache ECC and
704 * OCRAM ECC as well as the memories for other peripherals.
705 * Module specific initialization is done by passing the
706 * function index in the device tree.
707 */
708static int altr_edac_device_probe(struct platform_device *pdev)
709{
710 struct edac_device_ctl_info *dci;
711 struct altr_edac_device_dev *drvdata;
712 struct resource *r;
713 int res = 0;
714 struct device_node *np = pdev->dev.of_node;
715 char *ecc_name = (char *)np->name;
716 static int dev_instance;
717
718 if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) {
719 edac_printk(KERN_ERR, EDAC_DEVICE,
720 "Unable to open devm\n");
721 return -ENOMEM;
722 }
723
724 r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
725 if (!r) {
726 edac_printk(KERN_ERR, EDAC_DEVICE,
727 "Unable to get mem resource\n");
728 res = -ENODEV;
729 goto fail;
730 }
731
732 if (!devm_request_mem_region(&pdev->dev, r->start, resource_size(r),
733 dev_name(&pdev->dev))) {
734 edac_printk(KERN_ERR, EDAC_DEVICE,
735 "%s:Error requesting mem region\n", ecc_name);
736 res = -EBUSY;
737 goto fail;
738 }
739
740 dci = edac_device_alloc_ctl_info(sizeof(*drvdata), ecc_name,
741 1, ecc_name, 1, 0, NULL, 0,
742 dev_instance++);
743
744 if (!dci) {
745 edac_printk(KERN_ERR, EDAC_DEVICE,
746 "%s: Unable to allocate EDAC device\n", ecc_name);
747 res = -ENOMEM;
748 goto fail;
749 }
750
751 drvdata = dci->pvt_info;
752 dci->dev = &pdev->dev;
753 platform_set_drvdata(pdev, dci);
754 drvdata->edac_dev_name = ecc_name;
755
756 drvdata->base = devm_ioremap(&pdev->dev, r->start, resource_size(r));
757 if (!drvdata->base)
758 goto fail1;
759
760 /* Get driver specific data for this EDAC device */
761 drvdata->data = of_match_node(altr_edac_device_of_match, np)->data;
762
763 /* Check specific dependencies for the module */
764 if (drvdata->data->setup) {
Thor Thayer328ca7a2016-03-21 11:01:40 -0500765 res = drvdata->data->setup(drvdata);
Thor Thayerc3eea192016-02-10 13:26:21 -0600766 if (res)
767 goto fail1;
768 }
769
770 drvdata->sb_irq = platform_get_irq(pdev, 0);
771 res = devm_request_irq(&pdev->dev, drvdata->sb_irq,
772 altr_edac_device_handler,
773 0, dev_name(&pdev->dev), dci);
774 if (res)
775 goto fail1;
776
777 drvdata->db_irq = platform_get_irq(pdev, 1);
778 res = devm_request_irq(&pdev->dev, drvdata->db_irq,
779 altr_edac_device_handler,
780 0, dev_name(&pdev->dev), dci);
781 if (res)
782 goto fail1;
783
784 dci->mod_name = "Altera ECC Manager";
785 dci->dev_name = drvdata->edac_dev_name;
786
787 res = edac_device_add_device(dci);
788 if (res)
789 goto fail1;
790
791 altr_create_edacdev_dbgfs(dci, drvdata->data);
792
793 devres_close_group(&pdev->dev, NULL);
794
795 return 0;
796
797fail1:
798 edac_device_free_ctl_info(dci);
799fail:
800 devres_release_group(&pdev->dev, NULL);
801 edac_printk(KERN_ERR, EDAC_DEVICE,
802 "%s:Error setting up EDAC device: %d\n", ecc_name, res);
803
804 return res;
805}
806
807static int altr_edac_device_remove(struct platform_device *pdev)
808{
809 struct edac_device_ctl_info *dci = platform_get_drvdata(pdev);
810 struct altr_edac_device_dev *drvdata = dci->pvt_info;
811
812 debugfs_remove_recursive(drvdata->debugfs_dir);
813 edac_device_del_device(&pdev->dev);
814 edac_device_free_ctl_info(dci);
815
816 return 0;
817}
818
819static struct platform_driver altr_edac_device_driver = {
820 .probe = altr_edac_device_probe,
821 .remove = altr_edac_device_remove,
822 .driver = {
823 .name = "altr_edac_device",
824 .of_match_table = altr_edac_device_of_match,
825 },
826};
827module_platform_driver(altr_edac_device_driver);
828
Thor Thayer6b300fb2016-06-22 08:58:55 -0500829/******************* Arria10 Device ECC Shared Functions *****************/
Thor Thayerc3eea192016-02-10 13:26:21 -0600830
Arnd Bergmann1aa6eb52016-04-16 22:13:56 +0200831/*
832 * Test for memory's ECC dependencies upon entry because platform specific
833 * startup should have initialized the memory and enabled the ECC.
834 * Can't turn on ECC here because accessing un-initialized memory will
835 * cause CE/UE errors possibly causing an ABORT.
836 */
Thor Thayer6b300fb2016-06-22 08:58:55 -0500837static int __maybe_unused
838altr_check_ecc_deps(struct altr_edac_device_dev *device)
Arnd Bergmann1aa6eb52016-04-16 22:13:56 +0200839{
840 void __iomem *base = device->base;
841 const struct edac_device_prv_data *prv = device->data;
842
843 if (readl(base + prv->ecc_en_ofst) & prv->ecc_enable_mask)
844 return 0;
845
846 edac_printk(KERN_ERR, EDAC_DEVICE,
847 "%s: No ECC present or ECC disabled.\n",
848 device->edac_dev_name);
849 return -ENODEV;
850}
Thor Thayerc3eea192016-02-10 13:26:21 -0600851
Thor Thayer6b300fb2016-06-22 08:58:55 -0500852static irqreturn_t __maybe_unused altr_edac_a10_ecc_irq(int irq, void *dev_id)
853{
854 struct altr_edac_device_dev *dci = dev_id;
855 void __iomem *base = dci->base;
856
857 if (irq == dci->sb_irq) {
858 writel(ALTR_A10_ECC_SERRPENA,
859 base + ALTR_A10_ECC_INTSTAT_OFST);
860 edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name);
861
862 return IRQ_HANDLED;
863 } else if (irq == dci->db_irq) {
864 writel(ALTR_A10_ECC_DERRPENA,
865 base + ALTR_A10_ECC_INTSTAT_OFST);
866 edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name);
867 if (dci->data->panic)
868 panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
869
870 return IRQ_HANDLED;
871 }
872
873 WARN_ON(1);
874
875 return IRQ_NONE;
876}
877
Thor Thayer1166fde92016-06-22 08:58:57 -0500878/******************* Arria10 Memory Buffer Functions *********************/
879
880static inline int a10_get_irq_mask(struct device_node *np)
881{
882 int irq;
883 const u32 *handle = of_get_property(np, "interrupts", NULL);
884
885 if (!handle)
886 return -ENODEV;
887 irq = be32_to_cpup(handle);
888 return irq;
889}
890
891static inline void ecc_set_bits(u32 bit_mask, void __iomem *ioaddr)
892{
893 u32 value = readl(ioaddr);
894
895 value |= bit_mask;
896 writel(value, ioaddr);
897}
898
899static inline void ecc_clear_bits(u32 bit_mask, void __iomem *ioaddr)
900{
901 u32 value = readl(ioaddr);
902
903 value &= ~bit_mask;
904 writel(value, ioaddr);
905}
906
907static inline int ecc_test_bits(u32 bit_mask, void __iomem *ioaddr)
908{
909 u32 value = readl(ioaddr);
910
911 return (value & bit_mask) ? 1 : 0;
912}
913
914/*
915 * This function uses the memory initialization block in the Arria10 ECC
916 * controller to initialize/clear the entire memory data and ECC data.
917 */
918static int __maybe_unused altr_init_memory_port(void __iomem *ioaddr, int port)
919{
920 int limit = ALTR_A10_ECC_INIT_WATCHDOG_10US;
921 u32 init_mask, stat_mask, clear_mask;
922 int ret = 0;
923
924 if (port) {
925 init_mask = ALTR_A10_ECC_INITB;
926 stat_mask = ALTR_A10_ECC_INITCOMPLETEB;
927 clear_mask = ALTR_A10_ECC_ERRPENB_MASK;
928 } else {
929 init_mask = ALTR_A10_ECC_INITA;
930 stat_mask = ALTR_A10_ECC_INITCOMPLETEA;
931 clear_mask = ALTR_A10_ECC_ERRPENA_MASK;
932 }
933
934 ecc_set_bits(init_mask, (ioaddr + ALTR_A10_ECC_CTRL_OFST));
935 while (limit--) {
936 if (ecc_test_bits(stat_mask,
937 (ioaddr + ALTR_A10_ECC_INITSTAT_OFST)))
938 break;
939 udelay(1);
940 }
941 if (limit < 0)
942 ret = -EBUSY;
943
944 /* Clear any pending ECC interrupts */
945 writel(clear_mask, (ioaddr + ALTR_A10_ECC_INTSTAT_OFST));
946
947 return ret;
948}
949
950static __init int __maybe_unused
951altr_init_a10_ecc_block(struct device_node *np, u32 irq_mask,
952 u32 ecc_ctrl_en_mask, bool dual_port)
953{
954 int ret = 0;
955 void __iomem *ecc_block_base;
956 struct regmap *ecc_mgr_map;
957 char *ecc_name;
958 struct device_node *np_eccmgr;
959
960 ecc_name = (char *)np->name;
961
962 /* Get the ECC Manager - parent of the device EDACs */
963 np_eccmgr = of_get_parent(np);
964 ecc_mgr_map = syscon_regmap_lookup_by_phandle(np_eccmgr,
965 "altr,sysmgr-syscon");
966 of_node_put(np_eccmgr);
967 if (IS_ERR(ecc_mgr_map)) {
968 edac_printk(KERN_ERR, EDAC_DEVICE,
969 "Unable to get syscon altr,sysmgr-syscon\n");
970 return -ENODEV;
971 }
972
973 /* Map the ECC Block */
974 ecc_block_base = of_iomap(np, 0);
975 if (!ecc_block_base) {
976 edac_printk(KERN_ERR, EDAC_DEVICE,
977 "Unable to map %s ECC block\n", ecc_name);
978 return -ENODEV;
979 }
980
981 /* Disable ECC */
982 regmap_write(ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_SET_OFST, irq_mask);
983 writel(ALTR_A10_ECC_SERRINTEN,
984 (ecc_block_base + ALTR_A10_ECC_ERRINTENR_OFST));
985 ecc_clear_bits(ecc_ctrl_en_mask,
986 (ecc_block_base + ALTR_A10_ECC_CTRL_OFST));
987 /* Ensure all writes complete */
988 wmb();
989 /* Use HW initialization block to initialize memory for ECC */
990 ret = altr_init_memory_port(ecc_block_base, 0);
991 if (ret) {
992 edac_printk(KERN_ERR, EDAC_DEVICE,
993 "ECC: cannot init %s PORTA memory\n", ecc_name);
994 goto out;
995 }
996
997 if (dual_port) {
998 ret = altr_init_memory_port(ecc_block_base, 1);
999 if (ret) {
1000 edac_printk(KERN_ERR, EDAC_DEVICE,
1001 "ECC: cannot init %s PORTB memory\n",
1002 ecc_name);
1003 goto out;
1004 }
1005 }
1006
1007 /* Interrupt mode set to every SBERR */
1008 regmap_write(ecc_mgr_map, ALTR_A10_ECC_INTMODE_OFST,
1009 ALTR_A10_ECC_INTMODE);
1010 /* Enable ECC */
1011 ecc_set_bits(ecc_ctrl_en_mask, (ecc_block_base +
1012 ALTR_A10_ECC_CTRL_OFST));
1013 writel(ALTR_A10_ECC_SERRINTEN,
1014 (ecc_block_base + ALTR_A10_ECC_ERRINTENS_OFST));
1015 regmap_write(ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_CLR_OFST, irq_mask);
1016 /* Ensure all writes complete */
1017 wmb();
1018out:
1019 iounmap(ecc_block_base);
1020 return ret;
1021}
1022
1023static int validate_parent_available(struct device_node *np);
1024static const struct of_device_id altr_edac_a10_device_of_match[];
1025static int __init __maybe_unused altr_init_a10_ecc_device_type(char *compat)
1026{
1027 int irq;
1028 struct device_node *child, *np = of_find_compatible_node(NULL, NULL,
1029 "altr,socfpga-a10-ecc-manager");
1030 if (!np) {
1031 edac_printk(KERN_ERR, EDAC_DEVICE, "ECC Manager not found\n");
1032 return -ENODEV;
1033 }
1034
1035 for_each_child_of_node(np, child) {
1036 const struct of_device_id *pdev_id;
1037 const struct edac_device_prv_data *prv;
1038
1039 if (!of_device_is_available(child))
1040 continue;
1041 if (!of_device_is_compatible(child, compat))
1042 continue;
1043
1044 if (validate_parent_available(child))
1045 continue;
1046
1047 irq = a10_get_irq_mask(child);
1048 if (irq < 0)
1049 continue;
1050
1051 /* Get matching node and check for valid result */
1052 pdev_id = of_match_node(altr_edac_a10_device_of_match, child);
1053 if (IS_ERR_OR_NULL(pdev_id))
1054 continue;
1055
1056 /* Validate private data pointer before dereferencing */
1057 prv = pdev_id->data;
1058 if (!prv)
1059 continue;
1060
1061 altr_init_a10_ecc_block(child, BIT(irq),
1062 prv->ecc_enable_mask, 0);
1063 }
1064
1065 of_node_put(np);
1066 return 0;
1067}
1068
Thor Thayer6b300fb2016-06-22 08:58:55 -05001069/*********************** OCRAM EDAC Device Functions *********************/
1070
1071#ifdef CONFIG_EDAC_ALTERA_OCRAM
1072
Thor Thayerc3eea192016-02-10 13:26:21 -06001073static void *ocram_alloc_mem(size_t size, void **other)
1074{
1075 struct device_node *np;
1076 struct gen_pool *gp;
1077 void *sram_addr;
1078
1079 np = of_find_compatible_node(NULL, NULL, "altr,socfpga-ocram-ecc");
1080 if (!np)
1081 return NULL;
1082
1083 gp = of_gen_pool_get(np, "iram", 0);
1084 of_node_put(np);
1085 if (!gp)
1086 return NULL;
1087
1088 sram_addr = (void *)gen_pool_alloc(gp, size);
1089 if (!sram_addr)
1090 return NULL;
1091
1092 memset(sram_addr, 0, size);
1093 /* Ensure data is written out */
1094 wmb();
1095
1096 /* Remember this handle for freeing later */
1097 *other = gp;
1098
1099 return sram_addr;
1100}
1101
1102static void ocram_free_mem(void *p, size_t size, void *other)
1103{
1104 gen_pool_free((struct gen_pool *)other, (u32)p, size);
1105}
1106
Thor Thayer1cf70372016-06-22 08:58:54 -05001107static const struct edac_device_prv_data ocramecc_data = {
Thor Thayeraa1f06d2016-03-31 13:48:03 -05001108 .setup = altr_check_ecc_deps,
Thor Thayerc3eea192016-02-10 13:26:21 -06001109 .ce_clear_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_SERR),
1110 .ue_clear_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_DERR),
1111 .dbgfs_name = "altr_ocram_trigger",
1112 .alloc_mem = ocram_alloc_mem,
1113 .free_mem = ocram_free_mem,
1114 .ecc_enable_mask = ALTR_OCR_ECC_EN,
Thor Thayer943ad912016-03-31 13:48:02 -05001115 .ecc_en_ofst = ALTR_OCR_ECC_REG_OFFSET,
Thor Thayerc3eea192016-02-10 13:26:21 -06001116 .ce_set_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_INJS),
1117 .ue_set_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_INJD),
Thor Thayer811fce42016-03-21 11:01:42 -05001118 .set_err_ofst = ALTR_OCR_ECC_REG_OFFSET,
Thor Thayerc3eea192016-02-10 13:26:21 -06001119 .trig_alloc_sz = ALTR_TRIG_OCRAM_BYTE_SIZE,
Thor Thayere17ced22016-03-31 13:48:01 -05001120 .inject_fops = &altr_edac_device_inject_fops,
Thor Thayerc3eea192016-02-10 13:26:21 -06001121};
1122
Thor Thayer1cf70372016-06-22 08:58:54 -05001123static const struct edac_device_prv_data a10_ocramecc_data = {
Thor Thayerc7b4be82016-04-06 20:22:54 -05001124 .setup = altr_check_ecc_deps,
1125 .ce_clear_mask = ALTR_A10_ECC_SERRPENA,
1126 .ue_clear_mask = ALTR_A10_ECC_DERRPENA,
1127 .irq_status_mask = A10_SYSMGR_ECC_INTSTAT_OCRAM,
1128 .dbgfs_name = "altr_ocram_trigger",
1129 .ecc_enable_mask = ALTR_A10_OCRAM_ECC_EN_CTL,
1130 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1131 .ce_set_mask = ALTR_A10_ECC_TSERRA,
1132 .ue_set_mask = ALTR_A10_ECC_TDERRA,
1133 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1134 .ecc_irq_handler = altr_edac_a10_ecc_irq,
1135 .inject_fops = &altr_edac_a10_device_inject_fops,
Thor Thayer2b083d62016-06-22 08:58:53 -05001136 /*
1137 * OCRAM panic on uncorrectable error because sleep/resume
1138 * functions and FPGA contents are stored in OCRAM. Prefer
1139 * a kernel panic over executing/loading corrupted data.
1140 */
1141 .panic = true,
Thor Thayerc7b4be82016-04-06 20:22:54 -05001142};
1143
Thor Thayerc3eea192016-02-10 13:26:21 -06001144#endif /* CONFIG_EDAC_ALTERA_OCRAM */
1145
1146/********************* L2 Cache EDAC Device Functions ********************/
1147
1148#ifdef CONFIG_EDAC_ALTERA_L2C
1149
1150static void *l2_alloc_mem(size_t size, void **other)
1151{
1152 struct device *dev = *other;
1153 void *ptemp = devm_kzalloc(dev, size, GFP_KERNEL);
1154
1155 if (!ptemp)
1156 return NULL;
1157
1158 /* Make sure everything is written out */
1159 wmb();
1160
1161 /*
1162 * Clean all cache levels up to LoC (includes L2)
1163 * This ensures the corrupted data is written into
1164 * L2 cache for readback test (which causes ECC error).
1165 */
1166 flush_cache_all();
1167
1168 return ptemp;
1169}
1170
1171static void l2_free_mem(void *p, size_t size, void *other)
1172{
1173 struct device *dev = other;
1174
1175 if (dev && p)
1176 devm_kfree(dev, p);
1177}
1178
1179/*
1180 * altr_l2_check_deps()
1181 * Test for L2 cache ECC dependencies upon entry because
1182 * platform specific startup should have initialized the L2
1183 * memory and enabled the ECC.
1184 * Bail if ECC is not enabled.
1185 * Note that L2 Cache Enable is forced at build time.
1186 */
Thor Thayer328ca7a2016-03-21 11:01:40 -05001187static int altr_l2_check_deps(struct altr_edac_device_dev *device)
Thor Thayerc3eea192016-02-10 13:26:21 -06001188{
Thor Thayer328ca7a2016-03-21 11:01:40 -05001189 void __iomem *base = device->base;
Thor Thayer27439a12016-03-21 11:01:41 -05001190 const struct edac_device_prv_data *prv = device->data;
1191
1192 if ((readl(base) & prv->ecc_enable_mask) ==
1193 prv->ecc_enable_mask)
Thor Thayerc3eea192016-02-10 13:26:21 -06001194 return 0;
1195
1196 edac_printk(KERN_ERR, EDAC_DEVICE,
1197 "L2: No ECC present, or ECC disabled\n");
1198 return -ENODEV;
1199}
1200
Thor Thayer13ab8442016-06-07 15:35:57 -05001201static irqreturn_t altr_edac_a10_l2_irq(int irq, void *dev_id)
Thor Thayer588cb032016-03-21 11:01:44 -05001202{
Thor Thayer13ab8442016-06-07 15:35:57 -05001203 struct altr_edac_device_dev *dci = dev_id;
1204
1205 if (irq == dci->sb_irq) {
Thor Thayer588cb032016-03-21 11:01:44 -05001206 regmap_write(dci->edac->ecc_mgr_map,
1207 A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST,
1208 A10_SYSGMR_MPU_CLEAR_L2_ECC_SB);
1209 edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name);
Thor Thayer13ab8442016-06-07 15:35:57 -05001210
1211 return IRQ_HANDLED;
1212 } else if (irq == dci->db_irq) {
Thor Thayer588cb032016-03-21 11:01:44 -05001213 regmap_write(dci->edac->ecc_mgr_map,
1214 A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST,
1215 A10_SYSGMR_MPU_CLEAR_L2_ECC_MB);
1216 edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name);
1217 panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n");
Thor Thayer13ab8442016-06-07 15:35:57 -05001218
1219 return IRQ_HANDLED;
Thor Thayer588cb032016-03-21 11:01:44 -05001220 }
Thor Thayer13ab8442016-06-07 15:35:57 -05001221
1222 WARN_ON(1);
1223
1224 return IRQ_NONE;
Thor Thayer588cb032016-03-21 11:01:44 -05001225}
1226
Thor Thayer1cf70372016-06-22 08:58:54 -05001227static const struct edac_device_prv_data l2ecc_data = {
Thor Thayerc3eea192016-02-10 13:26:21 -06001228 .setup = altr_l2_check_deps,
1229 .ce_clear_mask = 0,
1230 .ue_clear_mask = 0,
1231 .dbgfs_name = "altr_l2_trigger",
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),
Thor Thayer811fce42016-03-21 11:01:42 -05001237 .set_err_ofst = ALTR_L2_ECC_REG_OFFSET,
Thor Thayerc3eea192016-02-10 13:26:21 -06001238 .trig_alloc_sz = ALTR_TRIG_L2C_BYTE_SIZE,
Thor Thayere17ced22016-03-31 13:48:01 -05001239 .inject_fops = &altr_edac_device_inject_fops,
Thor Thayerc3eea192016-02-10 13:26:21 -06001240};
1241
Thor Thayer1cf70372016-06-22 08:58:54 -05001242static const struct edac_device_prv_data a10_l2ecc_data = {
Thor Thayer588cb032016-03-21 11:01:44 -05001243 .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,
1247 .dbgfs_name = "altr_l2_trigger",
1248 .alloc_mem = l2_alloc_mem,
1249 .free_mem = l2_free_mem,
1250 .ecc_enable_mask = ALTR_A10_L2_ECC_EN_CTL,
1251 .ce_set_mask = ALTR_A10_L2_ECC_CE_INJ_MASK,
1252 .ue_set_mask = ALTR_A10_L2_ECC_UE_INJ_MASK,
1253 .set_err_ofst = ALTR_A10_L2_ECC_INJ_OFST,
1254 .ecc_irq_handler = altr_edac_a10_l2_irq,
1255 .trig_alloc_sz = ALTR_TRIG_L2C_BYTE_SIZE,
Thor Thayere17ced22016-03-31 13:48:01 -05001256 .inject_fops = &altr_edac_device_inject_fops,
Thor Thayer588cb032016-03-21 11:01:44 -05001257};
1258
Thor Thayerc3eea192016-02-10 13:26:21 -06001259#endif /* CONFIG_EDAC_ALTERA_L2C */
1260
Thor Thayerab8c1e02016-06-22 08:58:58 -05001261/********************* Ethernet Device Functions ********************/
1262
1263#ifdef CONFIG_EDAC_ALTERA_ETHERNET
1264
1265static const struct edac_device_prv_data a10_enetecc_data = {
1266 .setup = altr_check_ecc_deps,
1267 .ce_clear_mask = ALTR_A10_ECC_SERRPENA,
1268 .ue_clear_mask = ALTR_A10_ECC_DERRPENA,
1269 .dbgfs_name = "altr_trigger",
1270 .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
1271 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1272 .ce_set_mask = ALTR_A10_ECC_TSERRA,
1273 .ue_set_mask = ALTR_A10_ECC_TDERRA,
1274 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1275 .ecc_irq_handler = altr_edac_a10_ecc_irq,
1276 .inject_fops = &altr_edac_a10_device_inject_fops,
1277};
1278
1279static int __init socfpga_init_ethernet_ecc(void)
1280{
1281 return altr_init_a10_ecc_device_type("altr,socfpga-eth-mac-ecc");
1282}
1283
1284early_initcall(socfpga_init_ethernet_ecc);
1285
1286#endif /* CONFIG_EDAC_ALTERA_ETHERNET */
1287
Thor Thayerc6882fb2016-07-14 11:06:43 -05001288/********************** NAND Device Functions **********************/
1289
1290#ifdef CONFIG_EDAC_ALTERA_NAND
1291
1292static const struct edac_device_prv_data a10_nandecc_data = {
1293 .setup = altr_check_ecc_deps,
1294 .ce_clear_mask = ALTR_A10_ECC_SERRPENA,
1295 .ue_clear_mask = ALTR_A10_ECC_DERRPENA,
1296 .dbgfs_name = "altr_trigger",
1297 .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
1298 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1299 .ce_set_mask = ALTR_A10_ECC_TSERRA,
1300 .ue_set_mask = ALTR_A10_ECC_TDERRA,
1301 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1302 .ecc_irq_handler = altr_edac_a10_ecc_irq,
1303 .inject_fops = &altr_edac_a10_device_inject_fops,
1304};
1305
1306static int __init socfpga_init_nand_ecc(void)
1307{
1308 return altr_init_a10_ecc_device_type("altr,socfpga-nand-ecc");
1309}
1310
1311early_initcall(socfpga_init_nand_ecc);
1312
1313#endif /* CONFIG_EDAC_ALTERA_NAND */
1314
Thor Thayere8263792016-07-28 10:03:57 +02001315/********************** DMA Device Functions **********************/
1316
1317#ifdef CONFIG_EDAC_ALTERA_DMA
1318
1319static const struct edac_device_prv_data a10_dmaecc_data = {
1320 .setup = altr_check_ecc_deps,
1321 .ce_clear_mask = ALTR_A10_ECC_SERRPENA,
1322 .ue_clear_mask = ALTR_A10_ECC_DERRPENA,
1323 .dbgfs_name = "altr_trigger",
1324 .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
1325 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1326 .ce_set_mask = ALTR_A10_ECC_TSERRA,
1327 .ue_set_mask = ALTR_A10_ECC_TDERRA,
1328 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1329 .ecc_irq_handler = altr_edac_a10_ecc_irq,
1330 .inject_fops = &altr_edac_a10_device_inject_fops,
1331};
1332
1333static int __init socfpga_init_dma_ecc(void)
1334{
1335 return altr_init_a10_ecc_device_type("altr,socfpga-dma-ecc");
1336}
1337
1338early_initcall(socfpga_init_dma_ecc);
1339
1340#endif /* CONFIG_EDAC_ALTERA_DMA */
1341
Thor Thayerc6095812016-07-14 11:06:45 -05001342/********************** USB Device Functions **********************/
1343
1344#ifdef CONFIG_EDAC_ALTERA_USB
1345
1346static const struct edac_device_prv_data a10_usbecc_data = {
1347 .setup = altr_check_ecc_deps,
1348 .ce_clear_mask = ALTR_A10_ECC_SERRPENA,
1349 .ue_clear_mask = ALTR_A10_ECC_DERRPENA,
1350 .dbgfs_name = "altr_trigger",
1351 .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL,
1352 .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST,
1353 .ce_set_mask = ALTR_A10_ECC_TSERRA,
1354 .ue_set_mask = ALTR_A10_ECC_TDERRA,
1355 .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST,
1356 .ecc_irq_handler = altr_edac_a10_ecc_irq,
1357 .inject_fops = &altr_edac_a10_device_inject_fops,
1358};
1359
1360static int __init socfpga_init_usb_ecc(void)
1361{
1362 return altr_init_a10_ecc_device_type("altr,socfpga-usb-ecc");
1363}
1364
1365early_initcall(socfpga_init_usb_ecc);
1366
1367#endif /* CONFIG_EDAC_ALTERA_USB */
1368
Thor Thayer588cb032016-03-21 11:01:44 -05001369/********************* Arria10 EDAC Device Functions *************************/
Thor Thayerab564cb2016-05-25 11:29:41 -05001370static const struct of_device_id altr_edac_a10_device_of_match[] = {
1371#ifdef CONFIG_EDAC_ALTERA_L2C
1372 { .compatible = "altr,socfpga-a10-l2-ecc", .data = &a10_l2ecc_data },
1373#endif
1374#ifdef CONFIG_EDAC_ALTERA_OCRAM
1375 { .compatible = "altr,socfpga-a10-ocram-ecc",
1376 .data = &a10_ocramecc_data },
1377#endif
Thor Thayerab8c1e02016-06-22 08:58:58 -05001378#ifdef CONFIG_EDAC_ALTERA_ETHERNET
1379 { .compatible = "altr,socfpga-eth-mac-ecc",
1380 .data = &a10_enetecc_data },
1381#endif
Thor Thayerc6882fb2016-07-14 11:06:43 -05001382#ifdef CONFIG_EDAC_ALTERA_NAND
1383 { .compatible = "altr,socfpga-nand-ecc", .data = &a10_nandecc_data },
1384#endif
Thor Thayere8263792016-07-28 10:03:57 +02001385#ifdef CONFIG_EDAC_ALTERA_DMA
1386 { .compatible = "altr,socfpga-dma-ecc", .data = &a10_dmaecc_data },
1387#endif
Thor Thayerc6095812016-07-14 11:06:45 -05001388#ifdef CONFIG_EDAC_ALTERA_USB
1389 { .compatible = "altr,socfpga-usb-ecc", .data = &a10_usbecc_data },
1390#endif
Thor Thayerab564cb2016-05-25 11:29:41 -05001391 {},
1392};
1393MODULE_DEVICE_TABLE(of, altr_edac_a10_device_of_match);
Thor Thayer588cb032016-03-21 11:01:44 -05001394
1395/*
1396 * The Arria10 EDAC Device Functions differ from the Cyclone5/Arria5
1397 * because 2 IRQs are shared among the all ECC peripherals. The ECC
1398 * manager manages the IRQs and the children.
1399 * Based on xgene_edac.c peripheral code.
1400 */
1401
Thor Thayerc7b4be82016-04-06 20:22:54 -05001402static ssize_t altr_edac_a10_device_trig(struct file *file,
1403 const char __user *user_buf,
1404 size_t count, loff_t *ppos)
1405{
1406 struct edac_device_ctl_info *edac_dci = file->private_data;
1407 struct altr_edac_device_dev *drvdata = edac_dci->pvt_info;
1408 const struct edac_device_prv_data *priv = drvdata->data;
1409 void __iomem *set_addr = (drvdata->base + priv->set_err_ofst);
1410 unsigned long flags;
1411 u8 trig_type;
1412
1413 if (!user_buf || get_user(trig_type, user_buf))
1414 return -EFAULT;
1415
1416 local_irq_save(flags);
1417 if (trig_type == ALTR_UE_TRIGGER_CHAR)
1418 writel(priv->ue_set_mask, set_addr);
1419 else
1420 writel(priv->ce_set_mask, set_addr);
1421 /* Ensure the interrupt test bits are set */
1422 wmb();
1423 local_irq_restore(flags);
1424
1425 return count;
1426}
1427
Thor Thayer13ab8442016-06-07 15:35:57 -05001428static void altr_edac_a10_irq_handler(struct irq_desc *desc)
Thor Thayer588cb032016-03-21 11:01:44 -05001429{
Thor Thayer13ab8442016-06-07 15:35:57 -05001430 int dberr, bit, sm_offset, irq_status;
1431 struct altr_arria10_edac *edac = irq_desc_get_handler_data(desc);
1432 struct irq_chip *chip = irq_desc_get_chip(desc);
1433 int irq = irq_desc_get_irq(desc);
1434
1435 dberr = (irq == edac->db_irq) ? 1 : 0;
1436 sm_offset = dberr ? A10_SYSMGR_ECC_INTSTAT_DERR_OFST :
1437 A10_SYSMGR_ECC_INTSTAT_SERR_OFST;
1438
1439 chained_irq_enter(chip, desc);
Thor Thayer588cb032016-03-21 11:01:44 -05001440
1441 regmap_read(edac->ecc_mgr_map, sm_offset, &irq_status);
1442
Thor Thayer13ab8442016-06-07 15:35:57 -05001443 for_each_set_bit(bit, (unsigned long *)&irq_status, 32) {
1444 irq = irq_linear_revmap(edac->domain, dberr * 32 + bit);
1445 if (irq)
1446 generic_handle_irq(irq);
Thor Thayer588cb032016-03-21 11:01:44 -05001447 }
1448
Thor Thayer13ab8442016-06-07 15:35:57 -05001449 chained_irq_exit(chip, desc);
Thor Thayer588cb032016-03-21 11:01:44 -05001450}
1451
Thor Thayer44ec9b32016-06-22 08:58:52 -05001452static int validate_parent_available(struct device_node *np)
1453{
1454 struct device_node *parent;
1455 int ret = 0;
1456
1457 /* Ensure parent device is enabled if parent node exists */
1458 parent = of_parse_phandle(np, "altr,ecc-parent", 0);
1459 if (parent && !of_device_is_available(parent))
1460 ret = -ENODEV;
1461
1462 of_node_put(parent);
1463 return ret;
1464}
1465
Thor Thayer588cb032016-03-21 11:01:44 -05001466static int altr_edac_a10_device_add(struct altr_arria10_edac *edac,
1467 struct device_node *np)
1468{
1469 struct edac_device_ctl_info *dci;
1470 struct altr_edac_device_dev *altdev;
1471 char *ecc_name = (char *)np->name;
1472 struct resource res;
1473 int edac_idx;
1474 int rc = 0;
1475 const struct edac_device_prv_data *prv;
1476 /* Get matching node and check for valid result */
1477 const struct of_device_id *pdev_id =
Thor Thayerab564cb2016-05-25 11:29:41 -05001478 of_match_node(altr_edac_a10_device_of_match, np);
Thor Thayer588cb032016-03-21 11:01:44 -05001479 if (IS_ERR_OR_NULL(pdev_id))
1480 return -ENODEV;
1481
1482 /* Get driver specific data for this EDAC device */
1483 prv = pdev_id->data;
1484 if (IS_ERR_OR_NULL(prv))
1485 return -ENODEV;
1486
Thor Thayer44ec9b32016-06-22 08:58:52 -05001487 if (validate_parent_available(np))
1488 return -ENODEV;
1489
Thor Thayer588cb032016-03-21 11:01:44 -05001490 if (!devres_open_group(edac->dev, altr_edac_a10_device_add, GFP_KERNEL))
1491 return -ENOMEM;
1492
1493 rc = of_address_to_resource(np, 0, &res);
1494 if (rc < 0) {
1495 edac_printk(KERN_ERR, EDAC_DEVICE,
1496 "%s: no resource address\n", ecc_name);
1497 goto err_release_group;
1498 }
1499
1500 edac_idx = edac_device_alloc_index();
1501 dci = edac_device_alloc_ctl_info(sizeof(*altdev), ecc_name,
1502 1, ecc_name, 1, 0, NULL, 0,
1503 edac_idx);
1504
1505 if (!dci) {
1506 edac_printk(KERN_ERR, EDAC_DEVICE,
1507 "%s: Unable to allocate EDAC device\n", ecc_name);
1508 rc = -ENOMEM;
1509 goto err_release_group;
1510 }
1511
1512 altdev = dci->pvt_info;
1513 dci->dev = edac->dev;
1514 altdev->edac_dev_name = ecc_name;
1515 altdev->edac_idx = edac_idx;
1516 altdev->edac = edac;
1517 altdev->edac_dev = dci;
1518 altdev->data = prv;
1519 altdev->ddev = *edac->dev;
1520 dci->dev = &altdev->ddev;
1521 dci->ctl_name = "Altera ECC Manager";
1522 dci->mod_name = ecc_name;
1523 dci->dev_name = ecc_name;
1524
1525 altdev->base = devm_ioremap_resource(edac->dev, &res);
1526 if (IS_ERR(altdev->base)) {
1527 rc = PTR_ERR(altdev->base);
1528 goto err_release_group1;
1529 }
1530
1531 /* Check specific dependencies for the module */
1532 if (altdev->data->setup) {
1533 rc = altdev->data->setup(altdev);
1534 if (rc)
1535 goto err_release_group1;
1536 }
1537
Thor Thayer13ab8442016-06-07 15:35:57 -05001538 altdev->sb_irq = irq_of_parse_and_map(np, 0);
1539 if (!altdev->sb_irq) {
1540 edac_printk(KERN_ERR, EDAC_DEVICE, "Error allocating SBIRQ\n");
1541 rc = -ENODEV;
1542 goto err_release_group1;
1543 }
1544 rc = devm_request_irq(edac->dev, altdev->sb_irq,
1545 prv->ecc_irq_handler,
1546 IRQF_SHARED, ecc_name, altdev);
1547 if (rc) {
1548 edac_printk(KERN_ERR, EDAC_DEVICE, "No DBERR IRQ resource\n");
1549 goto err_release_group1;
1550 }
1551
1552 altdev->db_irq = irq_of_parse_and_map(np, 1);
1553 if (!altdev->db_irq) {
1554 edac_printk(KERN_ERR, EDAC_DEVICE, "Error allocating DBIRQ\n");
1555 rc = -ENODEV;
1556 goto err_release_group1;
1557 }
1558 rc = devm_request_irq(edac->dev, altdev->db_irq,
1559 prv->ecc_irq_handler,
1560 IRQF_SHARED, ecc_name, altdev);
1561 if (rc) {
1562 edac_printk(KERN_ERR, EDAC_DEVICE, "No DBERR IRQ resource\n");
1563 goto err_release_group1;
1564 }
1565
Thor Thayer588cb032016-03-21 11:01:44 -05001566 rc = edac_device_add_device(dci);
1567 if (rc) {
1568 dev_err(edac->dev, "edac_device_add_device failed\n");
1569 rc = -ENOMEM;
1570 goto err_release_group1;
1571 }
1572
1573 altr_create_edacdev_dbgfs(dci, prv);
1574
1575 list_add(&altdev->next, &edac->a10_ecc_devices);
1576
1577 devres_remove_group(edac->dev, altr_edac_a10_device_add);
1578
1579 return 0;
1580
1581err_release_group1:
1582 edac_device_free_ctl_info(dci);
1583err_release_group:
Thor Thayer588cb032016-03-21 11:01:44 -05001584 devres_release_group(edac->dev, NULL);
1585 edac_printk(KERN_ERR, EDAC_DEVICE,
1586 "%s:Error setting up EDAC device: %d\n", ecc_name, rc);
1587
1588 return rc;
1589}
1590
Thor Thayer13ab8442016-06-07 15:35:57 -05001591static void a10_eccmgr_irq_mask(struct irq_data *d)
1592{
1593 struct altr_arria10_edac *edac = irq_data_get_irq_chip_data(d);
1594
1595 regmap_write(edac->ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_SET_OFST,
1596 BIT(d->hwirq));
1597}
1598
1599static void a10_eccmgr_irq_unmask(struct irq_data *d)
1600{
1601 struct altr_arria10_edac *edac = irq_data_get_irq_chip_data(d);
1602
1603 regmap_write(edac->ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_CLR_OFST,
1604 BIT(d->hwirq));
1605}
1606
1607static int a10_eccmgr_irqdomain_map(struct irq_domain *d, unsigned int irq,
1608 irq_hw_number_t hwirq)
1609{
1610 struct altr_arria10_edac *edac = d->host_data;
1611
1612 irq_set_chip_and_handler(irq, &edac->irq_chip, handle_simple_irq);
1613 irq_set_chip_data(irq, edac);
1614 irq_set_noprobe(irq);
1615
1616 return 0;
1617}
1618
1619struct irq_domain_ops a10_eccmgr_ic_ops = {
1620 .map = a10_eccmgr_irqdomain_map,
1621 .xlate = irq_domain_xlate_twocell,
1622};
1623
Thor Thayer588cb032016-03-21 11:01:44 -05001624static int altr_edac_a10_probe(struct platform_device *pdev)
1625{
1626 struct altr_arria10_edac *edac;
1627 struct device_node *child;
Thor Thayer588cb032016-03-21 11:01:44 -05001628
1629 edac = devm_kzalloc(&pdev->dev, sizeof(*edac), GFP_KERNEL);
1630 if (!edac)
1631 return -ENOMEM;
1632
1633 edac->dev = &pdev->dev;
1634 platform_set_drvdata(pdev, edac);
1635 INIT_LIST_HEAD(&edac->a10_ecc_devices);
1636
1637 edac->ecc_mgr_map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
1638 "altr,sysmgr-syscon");
1639 if (IS_ERR(edac->ecc_mgr_map)) {
1640 edac_printk(KERN_ERR, EDAC_DEVICE,
1641 "Unable to get syscon altr,sysmgr-syscon\n");
1642 return PTR_ERR(edac->ecc_mgr_map);
1643 }
1644
Thor Thayer13ab8442016-06-07 15:35:57 -05001645 edac->irq_chip.name = pdev->dev.of_node->name;
1646 edac->irq_chip.irq_mask = a10_eccmgr_irq_mask;
1647 edac->irq_chip.irq_unmask = a10_eccmgr_irq_unmask;
1648 edac->domain = irq_domain_add_linear(pdev->dev.of_node, 64,
1649 &a10_eccmgr_ic_ops, edac);
1650 if (!edac->domain) {
1651 dev_err(&pdev->dev, "Error adding IRQ domain\n");
1652 return -ENOMEM;
Thor Thayer588cb032016-03-21 11:01:44 -05001653 }
1654
Thor Thayer13ab8442016-06-07 15:35:57 -05001655 edac->sb_irq = platform_get_irq(pdev, 0);
1656 if (edac->sb_irq < 0) {
1657 dev_err(&pdev->dev, "No SBERR IRQ resource\n");
1658 return edac->sb_irq;
Thor Thayer588cb032016-03-21 11:01:44 -05001659 }
1660
Thor Thayer13ab8442016-06-07 15:35:57 -05001661 irq_set_chained_handler_and_data(edac->sb_irq,
1662 altr_edac_a10_irq_handler,
1663 edac);
1664
1665 edac->db_irq = platform_get_irq(pdev, 1);
1666 if (edac->db_irq < 0) {
1667 dev_err(&pdev->dev, "No DBERR IRQ resource\n");
1668 return edac->db_irq;
1669 }
1670 irq_set_chained_handler_and_data(edac->db_irq,
1671 altr_edac_a10_irq_handler,
1672 edac);
1673
Thor Thayer588cb032016-03-21 11:01:44 -05001674 for_each_child_of_node(pdev->dev.of_node, child) {
1675 if (!of_device_is_available(child))
1676 continue;
Thor Thayerc6882fb2016-07-14 11:06:43 -05001677
1678 if (of_device_is_compatible(child, "altr,socfpga-a10-l2-ecc") ||
1679 of_device_is_compatible(child, "altr,socfpga-a10-ocram-ecc") ||
1680 of_device_is_compatible(child, "altr,socfpga-eth-mac-ecc") ||
Thor Thayere8263792016-07-28 10:03:57 +02001681 of_device_is_compatible(child, "altr,socfpga-nand-ecc") ||
Thor Thayerc6095812016-07-14 11:06:45 -05001682 of_device_is_compatible(child, "altr,socfpga-dma-ecc") ||
1683 of_device_is_compatible(child, "altr,socfpga-usb-ecc"))
Thor Thayerc6882fb2016-07-14 11:06:43 -05001684
Thor Thayer588cb032016-03-21 11:01:44 -05001685 altr_edac_a10_device_add(edac, child);
Thor Thayerc6882fb2016-07-14 11:06:43 -05001686
1687 else if (of_device_is_compatible(child, "altr,sdram-edac-a10"))
Thor Thayerab564cb2016-05-25 11:29:41 -05001688 of_platform_populate(pdev->dev.of_node,
1689 altr_sdram_ctrl_of_match,
1690 NULL, &pdev->dev);
Thor Thayer588cb032016-03-21 11:01:44 -05001691 }
1692
1693 return 0;
1694}
1695
1696static const struct of_device_id altr_edac_a10_of_match[] = {
1697 { .compatible = "altr,socfpga-a10-ecc-manager" },
1698 {},
1699};
1700MODULE_DEVICE_TABLE(of, altr_edac_a10_of_match);
1701
1702static struct platform_driver altr_edac_a10_driver = {
1703 .probe = altr_edac_a10_probe,
1704 .driver = {
1705 .name = "socfpga_a10_ecc_manager",
1706 .of_match_table = altr_edac_a10_of_match,
1707 },
1708};
1709module_platform_driver(altr_edac_a10_driver);
1710
Thor Thayer71bcada2014-09-03 10:27:54 -05001711MODULE_LICENSE("GPL v2");
1712MODULE_AUTHOR("Thor Thayer");
Thor Thayerc3eea192016-02-10 13:26:21 -06001713MODULE_DESCRIPTION("EDAC Driver for Altera Memories");