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3dab6bd5 | 1 | // SPDX-License-Identifier: GPL-2.0 |
71bcada8 | 2 | /* |
3dab6bd5 | 3 | * Copyright (C) 2017-2018, Intel Corporation. All rights reserved |
c3eea194 | 4 | * Copyright Altera Corporation (C) 2014-2016. All rights reserved. |
71bcada8 | 5 | * Copyright 2011-2012 Calxeda, Inc. |
71bcada8 TT |
6 | */ |
7 | ||
c3eea194 | 8 | #include <asm/cacheflush.h> |
71bcada8 | 9 | #include <linux/ctype.h> |
1166fde9 | 10 | #include <linux/delay.h> |
71bcada8 | 11 | #include <linux/edac.h> |
fad9fab9 | 12 | #include <linux/firmware/intel/stratix10-smc.h> |
c3eea194 | 13 | #include <linux/genalloc.h> |
71bcada8 | 14 | #include <linux/interrupt.h> |
13ab8448 | 15 | #include <linux/irqchip/chained_irq.h> |
71bcada8 | 16 | #include <linux/kernel.h> |
5781823f | 17 | #include <linux/mfd/altera-sysmgr.h> |
71bcada8 | 18 | #include <linux/mfd/syscon.h> |
e9918d7f | 19 | #include <linux/notifier.h> |
588cb03e | 20 | #include <linux/of_address.h> |
13ab8448 | 21 | #include <linux/of_irq.h> |
71bcada8 | 22 | #include <linux/of_platform.h> |
f39650de | 23 | #include <linux/panic_notifier.h> |
71bcada8 TT |
24 | #include <linux/platform_device.h> |
25 | #include <linux/regmap.h> | |
26 | #include <linux/types.h> | |
27 | #include <linux/uaccess.h> | |
28 | ||
143f4a5a | 29 | #include "altera_edac.h" |
71bcada8 TT |
30 | #include "edac_module.h" |
31 | ||
32 | #define EDAC_MOD_STR "altera_edac" | |
c3eea194 | 33 | #define EDAC_DEVICE "Altera" |
71bcada8 | 34 | |
580b5cf5 | 35 | #ifdef CONFIG_EDAC_ALTERA_SDRAM |
143f4a5a TT |
36 | static const struct altr_sdram_prv_data c5_data = { |
37 | .ecc_ctrl_offset = CV_CTLCFG_OFST, | |
38 | .ecc_ctl_en_mask = CV_CTLCFG_ECC_AUTO_EN, | |
39 | .ecc_stat_offset = CV_DRAMSTS_OFST, | |
40 | .ecc_stat_ce_mask = CV_DRAMSTS_SBEERR, | |
41 | .ecc_stat_ue_mask = CV_DRAMSTS_DBEERR, | |
42 | .ecc_saddr_offset = CV_ERRADDR_OFST, | |
73bcc942 | 43 | .ecc_daddr_offset = CV_ERRADDR_OFST, |
143f4a5a TT |
44 | .ecc_cecnt_offset = CV_SBECOUNT_OFST, |
45 | .ecc_uecnt_offset = CV_DBECOUNT_OFST, | |
46 | .ecc_irq_en_offset = CV_DRAMINTR_OFST, | |
47 | .ecc_irq_en_mask = CV_DRAMINTR_INTREN, | |
48 | .ecc_irq_clr_offset = CV_DRAMINTR_OFST, | |
49 | .ecc_irq_clr_mask = (CV_DRAMINTR_INTRCLR | CV_DRAMINTR_INTREN), | |
50 | .ecc_cnt_rst_offset = CV_DRAMINTR_OFST, | |
51 | .ecc_cnt_rst_mask = CV_DRAMINTR_INTRCLR, | |
143f4a5a TT |
52 | .ce_ue_trgr_offset = CV_CTLCFG_OFST, |
53 | .ce_set_mask = CV_CTLCFG_GEN_SB_ERR, | |
54 | .ue_set_mask = CV_CTLCFG_GEN_DB_ERR, | |
71bcada8 TT |
55 | }; |
56 | ||
73bcc942 TT |
57 | static const struct altr_sdram_prv_data a10_data = { |
58 | .ecc_ctrl_offset = A10_ECCCTRL1_OFST, | |
59 | .ecc_ctl_en_mask = A10_ECCCTRL1_ECC_EN, | |
60 | .ecc_stat_offset = A10_INTSTAT_OFST, | |
61 | .ecc_stat_ce_mask = A10_INTSTAT_SBEERR, | |
62 | .ecc_stat_ue_mask = A10_INTSTAT_DBEERR, | |
63 | .ecc_saddr_offset = A10_SERRADDR_OFST, | |
64 | .ecc_daddr_offset = A10_DERRADDR_OFST, | |
65 | .ecc_irq_en_offset = A10_ERRINTEN_OFST, | |
66 | .ecc_irq_en_mask = A10_ECC_IRQ_EN_MASK, | |
67 | .ecc_irq_clr_offset = A10_INTSTAT_OFST, | |
68 | .ecc_irq_clr_mask = (A10_INTSTAT_SBEERR | A10_INTSTAT_DBEERR), | |
69 | .ecc_cnt_rst_offset = A10_ECCCTRL1_OFST, | |
70 | .ecc_cnt_rst_mask = A10_ECC_CNT_RESET_MASK, | |
73bcc942 TT |
71 | .ce_ue_trgr_offset = A10_DIAGINTTEST_OFST, |
72 | .ce_set_mask = A10_DIAGINT_TSERRA_MASK, | |
73 | .ue_set_mask = A10_DIAGINT_TDERRA_MASK, | |
73bcc942 TT |
74 | }; |
75 | ||
c3eea194 TT |
76 | /*********************** EDAC Memory Controller Functions ****************/ |
77 | ||
78 | /* The SDRAM controller uses the EDAC Memory Controller framework. */ | |
79 | ||
71bcada8 TT |
80 | static irqreturn_t altr_sdram_mc_err_handler(int irq, void *dev_id) |
81 | { | |
82 | struct mem_ctl_info *mci = dev_id; | |
83 | struct altr_sdram_mc_data *drvdata = mci->pvt_info; | |
143f4a5a | 84 | const struct altr_sdram_prv_data *priv = drvdata->data; |
73bcc942 | 85 | u32 status, err_count = 1, err_addr; |
71bcada8 | 86 | |
143f4a5a | 87 | regmap_read(drvdata->mc_vbase, priv->ecc_stat_offset, &status); |
71bcada8 | 88 | |
143f4a5a | 89 | if (status & priv->ecc_stat_ue_mask) { |
73bcc942 TT |
90 | regmap_read(drvdata->mc_vbase, priv->ecc_daddr_offset, |
91 | &err_addr); | |
92 | if (priv->ecc_uecnt_offset) | |
93 | regmap_read(drvdata->mc_vbase, priv->ecc_uecnt_offset, | |
94 | &err_count); | |
71bcada8 TT |
95 | panic("\nEDAC: [%d Uncorrectable errors @ 0x%08X]\n", |
96 | err_count, err_addr); | |
97 | } | |
143f4a5a | 98 | if (status & priv->ecc_stat_ce_mask) { |
73bcc942 TT |
99 | regmap_read(drvdata->mc_vbase, priv->ecc_saddr_offset, |
100 | &err_addr); | |
101 | if (priv->ecc_uecnt_offset) | |
102 | regmap_read(drvdata->mc_vbase, priv->ecc_cecnt_offset, | |
103 | &err_count); | |
71bcada8 TT |
104 | edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, err_count, |
105 | err_addr >> PAGE_SHIFT, | |
106 | err_addr & ~PAGE_MASK, 0, | |
107 | 0, 0, -1, mci->ctl_name, ""); | |
73bcc942 TT |
108 | /* Clear IRQ to resume */ |
109 | regmap_write(drvdata->mc_vbase, priv->ecc_irq_clr_offset, | |
110 | priv->ecc_irq_clr_mask); | |
71bcada8 | 111 | |
73bcc942 TT |
112 | return IRQ_HANDLED; |
113 | } | |
114 | return IRQ_NONE; | |
71bcada8 TT |
115 | } |
116 | ||
71bcada8 TT |
117 | static ssize_t altr_sdr_mc_err_inject_write(struct file *file, |
118 | const char __user *data, | |
119 | size_t count, loff_t *ppos) | |
120 | { | |
121 | struct mem_ctl_info *mci = file->private_data; | |
122 | struct altr_sdram_mc_data *drvdata = mci->pvt_info; | |
143f4a5a | 123 | const struct altr_sdram_prv_data *priv = drvdata->data; |
71bcada8 TT |
124 | u32 *ptemp; |
125 | dma_addr_t dma_handle; | |
126 | u32 reg, read_reg; | |
127 | ||
128 | ptemp = dma_alloc_coherent(mci->pdev, 16, &dma_handle, GFP_KERNEL); | |
129 | if (!ptemp) { | |
130 | dma_free_coherent(mci->pdev, 16, ptemp, dma_handle); | |
131 | edac_printk(KERN_ERR, EDAC_MC, | |
132 | "Inject: Buffer Allocation error\n"); | |
133 | return -ENOMEM; | |
134 | } | |
135 | ||
143f4a5a TT |
136 | regmap_read(drvdata->mc_vbase, priv->ce_ue_trgr_offset, |
137 | &read_reg); | |
138 | read_reg &= ~(priv->ce_set_mask | priv->ue_set_mask); | |
71bcada8 TT |
139 | |
140 | /* Error are injected by writing a word while the SBE or DBE | |
141 | * bit in the CTLCFG register is set. Reading the word will | |
142 | * trigger the SBE or DBE error and the corresponding IRQ. | |
143 | */ | |
144 | if (count == 3) { | |
145 | edac_printk(KERN_ALERT, EDAC_MC, | |
146 | "Inject Double bit error\n"); | |
90e493d7 | 147 | local_irq_disable(); |
143f4a5a TT |
148 | regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset, |
149 | (read_reg | priv->ue_set_mask)); | |
90e493d7 | 150 | local_irq_enable(); |
71bcada8 TT |
151 | } else { |
152 | edac_printk(KERN_ALERT, EDAC_MC, | |
153 | "Inject Single bit error\n"); | |
90e493d7 | 154 | local_irq_disable(); |
143f4a5a TT |
155 | regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset, |
156 | (read_reg | priv->ce_set_mask)); | |
90e493d7 | 157 | local_irq_enable(); |
71bcada8 TT |
158 | } |
159 | ||
160 | ptemp[0] = 0x5A5A5A5A; | |
161 | ptemp[1] = 0xA5A5A5A5; | |
162 | ||
163 | /* Clear the error injection bits */ | |
143f4a5a | 164 | regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset, read_reg); |
71bcada8 TT |
165 | /* Ensure it has been written out */ |
166 | wmb(); | |
167 | ||
168 | /* | |
169 | * To trigger the error, we need to read the data back | |
170 | * (the data was written with errors above). | |
332efa63 | 171 | * The READ_ONCE macros and printk are used to prevent the |
71bcada8 TT |
172 | * the compiler optimizing these reads out. |
173 | */ | |
332efa63 MR |
174 | reg = READ_ONCE(ptemp[0]); |
175 | read_reg = READ_ONCE(ptemp[1]); | |
71bcada8 TT |
176 | /* Force Read */ |
177 | rmb(); | |
178 | ||
179 | edac_printk(KERN_ALERT, EDAC_MC, "Read Data [0x%X, 0x%X]\n", | |
180 | reg, read_reg); | |
181 | ||
182 | dma_free_coherent(mci->pdev, 16, ptemp, dma_handle); | |
183 | ||
184 | return count; | |
185 | } | |
186 | ||
187 | static const struct file_operations altr_sdr_mc_debug_inject_fops = { | |
188 | .open = simple_open, | |
189 | .write = altr_sdr_mc_err_inject_write, | |
190 | .llseek = generic_file_llseek, | |
191 | }; | |
192 | ||
193 | static void altr_sdr_mc_create_debugfs_nodes(struct mem_ctl_info *mci) | |
194 | { | |
bba3b31e BP |
195 | if (!IS_ENABLED(CONFIG_EDAC_DEBUG)) |
196 | return; | |
197 | ||
198 | if (!mci->debugfs) | |
199 | return; | |
200 | ||
b8978bad | 201 | edac_debugfs_create_file("altr_trigger", S_IWUSR, mci->debugfs, mci, |
bba3b31e | 202 | &altr_sdr_mc_debug_inject_fops); |
71bcada8 | 203 | } |
71bcada8 | 204 | |
f9ae487e TT |
205 | /* Get total memory size from Open Firmware DTB */ |
206 | static unsigned long get_total_mem(void) | |
71bcada8 | 207 | { |
f9ae487e | 208 | struct device_node *np = NULL; |
ff0abed4 CP |
209 | struct resource res; |
210 | int ret; | |
211 | unsigned long total_mem = 0; | |
f9ae487e TT |
212 | |
213 | for_each_node_by_type(np, "memory") { | |
ff0abed4 CP |
214 | ret = of_address_to_resource(np, 0, &res); |
215 | if (ret) | |
216 | continue; | |
217 | ||
218 | total_mem += resource_size(&res); | |
f9ae487e TT |
219 | } |
220 | edac_dbg(0, "total_mem 0x%lx\n", total_mem); | |
221 | return total_mem; | |
71bcada8 TT |
222 | } |
223 | ||
143f4a5a | 224 | static const struct of_device_id altr_sdram_ctrl_of_match[] = { |
2c911f6c AB |
225 | { .compatible = "altr,sdram-edac", .data = &c5_data}, |
226 | { .compatible = "altr,sdram-edac-a10", .data = &a10_data}, | |
143f4a5a TT |
227 | {}, |
228 | }; | |
229 | MODULE_DEVICE_TABLE(of, altr_sdram_ctrl_of_match); | |
230 | ||
73bcc942 TT |
231 | static int a10_init(struct regmap *mc_vbase) |
232 | { | |
233 | if (regmap_update_bits(mc_vbase, A10_INTMODE_OFST, | |
234 | A10_INTMODE_SB_INT, A10_INTMODE_SB_INT)) { | |
235 | edac_printk(KERN_ERR, EDAC_MC, | |
236 | "Error setting SB IRQ mode\n"); | |
237 | return -ENODEV; | |
238 | } | |
239 | ||
240 | if (regmap_write(mc_vbase, A10_SERRCNTREG_OFST, 1)) { | |
241 | edac_printk(KERN_ERR, EDAC_MC, | |
242 | "Error setting trigger count\n"); | |
243 | return -ENODEV; | |
244 | } | |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
249 | static int a10_unmask_irq(struct platform_device *pdev, u32 mask) | |
250 | { | |
251 | void __iomem *sm_base; | |
252 | int ret = 0; | |
253 | ||
254 | if (!request_mem_region(A10_SYMAN_INTMASK_CLR, sizeof(u32), | |
255 | dev_name(&pdev->dev))) { | |
256 | edac_printk(KERN_ERR, EDAC_MC, | |
257 | "Unable to request mem region\n"); | |
258 | return -EBUSY; | |
259 | } | |
260 | ||
261 | sm_base = ioremap(A10_SYMAN_INTMASK_CLR, sizeof(u32)); | |
262 | if (!sm_base) { | |
263 | edac_printk(KERN_ERR, EDAC_MC, | |
264 | "Unable to ioremap device\n"); | |
265 | ||
266 | ret = -ENOMEM; | |
267 | goto release; | |
268 | } | |
269 | ||
270 | iowrite32(mask, sm_base); | |
271 | ||
272 | iounmap(sm_base); | |
273 | ||
274 | release: | |
275 | release_mem_region(A10_SYMAN_INTMASK_CLR, sizeof(u32)); | |
276 | ||
277 | return ret; | |
278 | } | |
279 | ||
71bcada8 TT |
280 | static int altr_sdram_probe(struct platform_device *pdev) |
281 | { | |
143f4a5a | 282 | const struct of_device_id *id; |
71bcada8 TT |
283 | struct edac_mc_layer layers[2]; |
284 | struct mem_ctl_info *mci; | |
285 | struct altr_sdram_mc_data *drvdata; | |
143f4a5a | 286 | const struct altr_sdram_prv_data *priv; |
71bcada8 TT |
287 | struct regmap *mc_vbase; |
288 | struct dimm_info *dimm; | |
143f4a5a | 289 | u32 read_reg; |
73bcc942 TT |
290 | int irq, irq2, res = 0; |
291 | unsigned long mem_size, irqflags = 0; | |
143f4a5a TT |
292 | |
293 | id = of_match_device(altr_sdram_ctrl_of_match, &pdev->dev); | |
294 | if (!id) | |
295 | return -ENODEV; | |
71bcada8 | 296 | |
71bcada8 TT |
297 | /* Grab the register range from the sdr controller in device tree */ |
298 | mc_vbase = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, | |
299 | "altr,sdr-syscon"); | |
300 | if (IS_ERR(mc_vbase)) { | |
301 | edac_printk(KERN_ERR, EDAC_MC, | |
302 | "regmap for altr,sdr-syscon lookup failed.\n"); | |
303 | return -ENODEV; | |
304 | } | |
305 | ||
143f4a5a TT |
306 | /* Check specific dependencies for the module */ |
307 | priv = of_match_node(altr_sdram_ctrl_of_match, | |
308 | pdev->dev.of_node)->data; | |
309 | ||
310 | /* Validate the SDRAM controller has ECC enabled */ | |
311 | if (regmap_read(mc_vbase, priv->ecc_ctrl_offset, &read_reg) || | |
312 | ((read_reg & priv->ecc_ctl_en_mask) != priv->ecc_ctl_en_mask)) { | |
71bcada8 TT |
313 | edac_printk(KERN_ERR, EDAC_MC, |
314 | "No ECC/ECC disabled [0x%08X]\n", read_reg); | |
315 | return -ENODEV; | |
316 | } | |
317 | ||
318 | /* Grab memory size from device tree. */ | |
f9ae487e | 319 | mem_size = get_total_mem(); |
71bcada8 | 320 | if (!mem_size) { |
f9ae487e | 321 | edac_printk(KERN_ERR, EDAC_MC, "Unable to calculate memory size\n"); |
71bcada8 TT |
322 | return -ENODEV; |
323 | } | |
324 | ||
143f4a5a TT |
325 | /* Ensure the SDRAM Interrupt is disabled */ |
326 | if (regmap_update_bits(mc_vbase, priv->ecc_irq_en_offset, | |
327 | priv->ecc_irq_en_mask, 0)) { | |
328 | edac_printk(KERN_ERR, EDAC_MC, | |
329 | "Error disabling SDRAM ECC IRQ\n"); | |
330 | return -ENODEV; | |
331 | } | |
332 | ||
333 | /* Toggle to clear the SDRAM Error count */ | |
334 | if (regmap_update_bits(mc_vbase, priv->ecc_cnt_rst_offset, | |
335 | priv->ecc_cnt_rst_mask, | |
336 | priv->ecc_cnt_rst_mask)) { | |
337 | edac_printk(KERN_ERR, EDAC_MC, | |
338 | "Error clearing SDRAM ECC count\n"); | |
339 | return -ENODEV; | |
340 | } | |
341 | ||
342 | if (regmap_update_bits(mc_vbase, priv->ecc_cnt_rst_offset, | |
343 | priv->ecc_cnt_rst_mask, 0)) { | |
71bcada8 | 344 | edac_printk(KERN_ERR, EDAC_MC, |
143f4a5a | 345 | "Error clearing SDRAM ECC count\n"); |
71bcada8 TT |
346 | return -ENODEV; |
347 | } | |
348 | ||
349 | irq = platform_get_irq(pdev, 0); | |
350 | if (irq < 0) { | |
351 | edac_printk(KERN_ERR, EDAC_MC, | |
352 | "No irq %d in DT\n", irq); | |
353 | return -ENODEV; | |
354 | } | |
355 | ||
73bcc942 TT |
356 | /* Arria10 has a 2nd IRQ */ |
357 | irq2 = platform_get_irq(pdev, 1); | |
358 | ||
71bcada8 TT |
359 | layers[0].type = EDAC_MC_LAYER_CHIP_SELECT; |
360 | layers[0].size = 1; | |
361 | layers[0].is_virt_csrow = true; | |
362 | layers[1].type = EDAC_MC_LAYER_CHANNEL; | |
363 | layers[1].size = 1; | |
364 | layers[1].is_virt_csrow = false; | |
365 | mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers, | |
366 | sizeof(struct altr_sdram_mc_data)); | |
367 | if (!mci) | |
368 | return -ENOMEM; | |
369 | ||
370 | mci->pdev = &pdev->dev; | |
371 | drvdata = mci->pvt_info; | |
372 | drvdata->mc_vbase = mc_vbase; | |
143f4a5a | 373 | drvdata->data = priv; |
71bcada8 TT |
374 | platform_set_drvdata(pdev, mci); |
375 | ||
376 | if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) { | |
143f4a5a TT |
377 | edac_printk(KERN_ERR, EDAC_MC, |
378 | "Unable to get managed device resource\n"); | |
71bcada8 TT |
379 | res = -ENOMEM; |
380 | goto free; | |
381 | } | |
382 | ||
383 | mci->mtype_cap = MEM_FLAG_DDR3; | |
384 | mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED; | |
385 | mci->edac_cap = EDAC_FLAG_SECDED; | |
386 | mci->mod_name = EDAC_MOD_STR; | |
71bcada8 TT |
387 | mci->ctl_name = dev_name(&pdev->dev); |
388 | mci->scrub_mode = SCRUB_SW_SRC; | |
389 | mci->dev_name = dev_name(&pdev->dev); | |
390 | ||
391 | dimm = *mci->dimms; | |
392 | dimm->nr_pages = ((mem_size - 1) >> PAGE_SHIFT) + 1; | |
393 | dimm->grain = 8; | |
394 | dimm->dtype = DEV_X8; | |
395 | dimm->mtype = MEM_DDR3; | |
396 | dimm->edac_mode = EDAC_SECDED; | |
397 | ||
398 | res = edac_mc_add_mc(mci); | |
399 | if (res < 0) | |
400 | goto err; | |
401 | ||
73bcc942 | 402 | /* Only the Arria10 has separate IRQs */ |
5781823f | 403 | if (of_machine_is_compatible("altr,socfpga-arria10")) { |
73bcc942 TT |
404 | /* Arria10 specific initialization */ |
405 | res = a10_init(mc_vbase); | |
406 | if (res < 0) | |
407 | goto err2; | |
408 | ||
409 | res = devm_request_irq(&pdev->dev, irq2, | |
410 | altr_sdram_mc_err_handler, | |
411 | IRQF_SHARED, dev_name(&pdev->dev), mci); | |
412 | if (res < 0) { | |
413 | edac_mc_printk(mci, KERN_ERR, | |
414 | "Unable to request irq %d\n", irq2); | |
415 | res = -ENODEV; | |
416 | goto err2; | |
417 | } | |
418 | ||
419 | res = a10_unmask_irq(pdev, A10_DDR0_IRQ_MASK); | |
420 | if (res < 0) | |
421 | goto err2; | |
422 | ||
423 | irqflags = IRQF_SHARED; | |
424 | } | |
425 | ||
71bcada8 | 426 | res = devm_request_irq(&pdev->dev, irq, altr_sdram_mc_err_handler, |
73bcc942 | 427 | irqflags, dev_name(&pdev->dev), mci); |
71bcada8 TT |
428 | if (res < 0) { |
429 | edac_mc_printk(mci, KERN_ERR, | |
430 | "Unable to request irq %d\n", irq); | |
431 | res = -ENODEV; | |
432 | goto err2; | |
433 | } | |
434 | ||
143f4a5a TT |
435 | /* Infrastructure ready - enable the IRQ */ |
436 | if (regmap_update_bits(drvdata->mc_vbase, priv->ecc_irq_en_offset, | |
437 | priv->ecc_irq_en_mask, priv->ecc_irq_en_mask)) { | |
71bcada8 TT |
438 | edac_mc_printk(mci, KERN_ERR, |
439 | "Error enabling SDRAM ECC IRQ\n"); | |
440 | res = -ENODEV; | |
441 | goto err2; | |
442 | } | |
443 | ||
444 | altr_sdr_mc_create_debugfs_nodes(mci); | |
445 | ||
446 | devres_close_group(&pdev->dev, NULL); | |
447 | ||
448 | return 0; | |
449 | ||
450 | err2: | |
451 | edac_mc_del_mc(&pdev->dev); | |
452 | err: | |
453 | devres_release_group(&pdev->dev, NULL); | |
454 | free: | |
455 | edac_mc_free(mci); | |
456 | edac_printk(KERN_ERR, EDAC_MC, | |
457 | "EDAC Probe Failed; Error %d\n", res); | |
458 | ||
459 | return res; | |
460 | } | |
461 | ||
462 | static int altr_sdram_remove(struct platform_device *pdev) | |
463 | { | |
464 | struct mem_ctl_info *mci = platform_get_drvdata(pdev); | |
465 | ||
466 | edac_mc_del_mc(&pdev->dev); | |
467 | edac_mc_free(mci); | |
468 | platform_set_drvdata(pdev, NULL); | |
469 | ||
470 | return 0; | |
471 | } | |
472 | ||
580b5cf5 TT |
473 | /* |
474 | * If you want to suspend, need to disable EDAC by removing it | |
475 | * from the device tree or defconfig. | |
476 | */ | |
477 | #ifdef CONFIG_PM | |
478 | static int altr_sdram_prepare(struct device *dev) | |
479 | { | |
480 | pr_err("Suspend not allowed when EDAC is enabled.\n"); | |
481 | ||
482 | return -EPERM; | |
483 | } | |
484 | ||
485 | static const struct dev_pm_ops altr_sdram_pm_ops = { | |
486 | .prepare = altr_sdram_prepare, | |
487 | }; | |
488 | #endif | |
489 | ||
490 | static struct platform_driver altr_sdram_edac_driver = { | |
491 | .probe = altr_sdram_probe, | |
492 | .remove = altr_sdram_remove, | |
493 | .driver = { | |
494 | .name = "altr_sdram_edac", | |
495 | #ifdef CONFIG_PM | |
496 | .pm = &altr_sdram_pm_ops, | |
497 | #endif | |
498 | .of_match_table = altr_sdram_ctrl_of_match, | |
499 | }, | |
500 | }; | |
501 | ||
502 | module_platform_driver(altr_sdram_edac_driver); | |
503 | ||
504 | #endif /* CONFIG_EDAC_ALTERA_SDRAM */ | |
505 | ||
c3eea194 TT |
506 | /************************* EDAC Parent Probe *************************/ |
507 | ||
508 | static const struct of_device_id altr_edac_device_of_match[]; | |
509 | ||
510 | static const struct of_device_id altr_edac_of_match[] = { | |
511 | { .compatible = "altr,socfpga-ecc-manager" }, | |
512 | {}, | |
513 | }; | |
514 | MODULE_DEVICE_TABLE(of, altr_edac_of_match); | |
515 | ||
516 | static int altr_edac_probe(struct platform_device *pdev) | |
517 | { | |
518 | of_platform_populate(pdev->dev.of_node, altr_edac_device_of_match, | |
519 | NULL, &pdev->dev); | |
520 | return 0; | |
521 | } | |
522 | ||
523 | static struct platform_driver altr_edac_driver = { | |
524 | .probe = altr_edac_probe, | |
525 | .driver = { | |
526 | .name = "socfpga_ecc_manager", | |
527 | .of_match_table = altr_edac_of_match, | |
528 | }, | |
529 | }; | |
530 | module_platform_driver(altr_edac_driver); | |
531 | ||
532 | /************************* EDAC Device Functions *************************/ | |
533 | ||
534 | /* | |
535 | * EDAC Device Functions (shared between various IPs). | |
536 | * The discrete memories use the EDAC Device framework. The probe | |
537 | * and error handling functions are very similar between memories | |
538 | * so they are shared. The memory allocation and freeing for EDAC | |
539 | * trigger testing are different for each memory. | |
540 | */ | |
541 | ||
7d07deb3 | 542 | #ifdef CONFIG_EDAC_ALTERA_OCRAM |
1cf70377 | 543 | static const struct edac_device_prv_data ocramecc_data; |
7d07deb3 KK |
544 | #endif |
545 | #ifdef CONFIG_EDAC_ALTERA_L2C | |
1cf70377 | 546 | static const struct edac_device_prv_data l2ecc_data; |
7d07deb3 KK |
547 | #endif |
548 | #ifdef CONFIG_EDAC_ALTERA_OCRAM | |
1cf70377 | 549 | static const struct edac_device_prv_data a10_ocramecc_data; |
7d07deb3 KK |
550 | #endif |
551 | #ifdef CONFIG_EDAC_ALTERA_L2C | |
1cf70377 | 552 | static const struct edac_device_prv_data a10_l2ecc_data; |
7d07deb3 | 553 | #endif |
c3eea194 | 554 | |
c3eea194 TT |
555 | static irqreturn_t altr_edac_device_handler(int irq, void *dev_id) |
556 | { | |
557 | irqreturn_t ret_value = IRQ_NONE; | |
558 | struct edac_device_ctl_info *dci = dev_id; | |
559 | struct altr_edac_device_dev *drvdata = dci->pvt_info; | |
560 | const struct edac_device_prv_data *priv = drvdata->data; | |
561 | ||
562 | if (irq == drvdata->sb_irq) { | |
563 | if (priv->ce_clear_mask) | |
564 | writel(priv->ce_clear_mask, drvdata->base); | |
565 | edac_device_handle_ce(dci, 0, 0, drvdata->edac_dev_name); | |
566 | ret_value = IRQ_HANDLED; | |
567 | } else if (irq == drvdata->db_irq) { | |
568 | if (priv->ue_clear_mask) | |
569 | writel(priv->ue_clear_mask, drvdata->base); | |
570 | edac_device_handle_ue(dci, 0, 0, drvdata->edac_dev_name); | |
571 | panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n"); | |
572 | ret_value = IRQ_HANDLED; | |
573 | } else { | |
574 | WARN_ON(1); | |
575 | } | |
576 | ||
577 | return ret_value; | |
578 | } | |
579 | ||
7d07deb3 KK |
580 | static ssize_t __maybe_unused |
581 | altr_edac_device_trig(struct file *file, const char __user *user_buf, | |
582 | size_t count, loff_t *ppos) | |
c3eea194 TT |
583 | |
584 | { | |
585 | u32 *ptemp, i, error_mask; | |
586 | int result = 0; | |
587 | u8 trig_type; | |
588 | unsigned long flags; | |
589 | struct edac_device_ctl_info *edac_dci = file->private_data; | |
590 | struct altr_edac_device_dev *drvdata = edac_dci->pvt_info; | |
591 | const struct edac_device_prv_data *priv = drvdata->data; | |
592 | void *generic_ptr = edac_dci->dev; | |
593 | ||
594 | if (!user_buf || get_user(trig_type, user_buf)) | |
595 | return -EFAULT; | |
596 | ||
597 | if (!priv->alloc_mem) | |
598 | return -ENOMEM; | |
599 | ||
600 | /* | |
601 | * Note that generic_ptr is initialized to the device * but in | |
602 | * some alloc_functions, this is overridden and returns data. | |
603 | */ | |
604 | ptemp = priv->alloc_mem(priv->trig_alloc_sz, &generic_ptr); | |
605 | if (!ptemp) { | |
606 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
607 | "Inject: Buffer Allocation error\n"); | |
608 | return -ENOMEM; | |
609 | } | |
610 | ||
611 | if (trig_type == ALTR_UE_TRIGGER_CHAR) | |
612 | error_mask = priv->ue_set_mask; | |
613 | else | |
614 | error_mask = priv->ce_set_mask; | |
615 | ||
616 | edac_printk(KERN_ALERT, EDAC_DEVICE, | |
617 | "Trigger Error Mask (0x%X)\n", error_mask); | |
618 | ||
619 | local_irq_save(flags); | |
620 | /* write ECC corrupted data out. */ | |
621 | for (i = 0; i < (priv->trig_alloc_sz / sizeof(*ptemp)); i++) { | |
622 | /* Read data so we're in the correct state */ | |
623 | rmb(); | |
332efa63 | 624 | if (READ_ONCE(ptemp[i])) |
c3eea194 TT |
625 | result = -1; |
626 | /* Toggle Error bit (it is latched), leave ECC enabled */ | |
811fce4f TT |
627 | writel(error_mask, (drvdata->base + priv->set_err_ofst)); |
628 | writel(priv->ecc_enable_mask, (drvdata->base + | |
629 | priv->set_err_ofst)); | |
c3eea194 TT |
630 | ptemp[i] = i; |
631 | } | |
632 | /* Ensure it has been written out */ | |
633 | wmb(); | |
634 | local_irq_restore(flags); | |
635 | ||
636 | if (result) | |
637 | edac_printk(KERN_ERR, EDAC_DEVICE, "Mem Not Cleared\n"); | |
638 | ||
639 | /* Read out written data. ECC error caused here */ | |
640 | for (i = 0; i < ALTR_TRIGGER_READ_WRD_CNT; i++) | |
332efa63 | 641 | if (READ_ONCE(ptemp[i]) != i) |
c3eea194 TT |
642 | edac_printk(KERN_ERR, EDAC_DEVICE, |
643 | "Read doesn't match written data\n"); | |
644 | ||
645 | if (priv->free_mem) | |
646 | priv->free_mem(ptemp, priv->trig_alloc_sz, generic_ptr); | |
647 | ||
648 | return count; | |
649 | } | |
650 | ||
7d07deb3 | 651 | static const struct file_operations altr_edac_device_inject_fops __maybe_unused = { |
c3eea194 TT |
652 | .open = simple_open, |
653 | .write = altr_edac_device_trig, | |
654 | .llseek = generic_file_llseek, | |
655 | }; | |
656 | ||
7d07deb3 KK |
657 | static ssize_t __maybe_unused |
658 | altr_edac_a10_device_trig(struct file *file, const char __user *user_buf, | |
659 | size_t count, loff_t *ppos); | |
c7b4be8d | 660 | |
7d07deb3 | 661 | static const struct file_operations altr_edac_a10_device_inject_fops __maybe_unused = { |
c7b4be8d TT |
662 | .open = simple_open, |
663 | .write = altr_edac_a10_device_trig, | |
664 | .llseek = generic_file_llseek, | |
665 | }; | |
666 | ||
7d07deb3 KK |
667 | static ssize_t __maybe_unused |
668 | altr_edac_a10_device_trig2(struct file *file, const char __user *user_buf, | |
669 | size_t count, loff_t *ppos); | |
064acbd4 | 670 | |
7d07deb3 | 671 | static const struct file_operations altr_edac_a10_device_inject2_fops __maybe_unused = { |
064acbd4 TT |
672 | .open = simple_open, |
673 | .write = altr_edac_a10_device_trig2, | |
674 | .llseek = generic_file_llseek, | |
675 | }; | |
676 | ||
c3eea194 TT |
677 | static void altr_create_edacdev_dbgfs(struct edac_device_ctl_info *edac_dci, |
678 | const struct edac_device_prv_data *priv) | |
679 | { | |
680 | struct altr_edac_device_dev *drvdata = edac_dci->pvt_info; | |
681 | ||
682 | if (!IS_ENABLED(CONFIG_EDAC_DEBUG)) | |
683 | return; | |
684 | ||
685 | drvdata->debugfs_dir = edac_debugfs_create_dir(drvdata->edac_dev_name); | |
686 | if (!drvdata->debugfs_dir) | |
687 | return; | |
688 | ||
f399f34b | 689 | if (!edac_debugfs_create_file("altr_trigger", S_IWUSR, |
c3eea194 | 690 | drvdata->debugfs_dir, edac_dci, |
e17ced2c | 691 | priv->inject_fops)) |
c3eea194 TT |
692 | debugfs_remove_recursive(drvdata->debugfs_dir); |
693 | } | |
694 | ||
695 | static const struct of_device_id altr_edac_device_of_match[] = { | |
696 | #ifdef CONFIG_EDAC_ALTERA_L2C | |
2c911f6c | 697 | { .compatible = "altr,socfpga-l2-ecc", .data = &l2ecc_data }, |
c3eea194 TT |
698 | #endif |
699 | #ifdef CONFIG_EDAC_ALTERA_OCRAM | |
2c911f6c | 700 | { .compatible = "altr,socfpga-ocram-ecc", .data = &ocramecc_data }, |
c3eea194 TT |
701 | #endif |
702 | {}, | |
703 | }; | |
704 | MODULE_DEVICE_TABLE(of, altr_edac_device_of_match); | |
705 | ||
706 | /* | |
707 | * altr_edac_device_probe() | |
708 | * This is a generic EDAC device driver that will support | |
709 | * various Altera memory devices such as the L2 cache ECC and | |
710 | * OCRAM ECC as well as the memories for other peripherals. | |
711 | * Module specific initialization is done by passing the | |
712 | * function index in the device tree. | |
713 | */ | |
714 | static int altr_edac_device_probe(struct platform_device *pdev) | |
715 | { | |
716 | struct edac_device_ctl_info *dci; | |
717 | struct altr_edac_device_dev *drvdata; | |
718 | struct resource *r; | |
719 | int res = 0; | |
720 | struct device_node *np = pdev->dev.of_node; | |
721 | char *ecc_name = (char *)np->name; | |
722 | static int dev_instance; | |
723 | ||
724 | if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) { | |
725 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
726 | "Unable to open devm\n"); | |
727 | return -ENOMEM; | |
728 | } | |
729 | ||
730 | r = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
731 | if (!r) { | |
732 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
733 | "Unable to get mem resource\n"); | |
734 | res = -ENODEV; | |
735 | goto fail; | |
736 | } | |
737 | ||
738 | if (!devm_request_mem_region(&pdev->dev, r->start, resource_size(r), | |
739 | dev_name(&pdev->dev))) { | |
740 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
741 | "%s:Error requesting mem region\n", ecc_name); | |
742 | res = -EBUSY; | |
743 | goto fail; | |
744 | } | |
745 | ||
746 | dci = edac_device_alloc_ctl_info(sizeof(*drvdata), ecc_name, | |
747 | 1, ecc_name, 1, 0, NULL, 0, | |
748 | dev_instance++); | |
749 | ||
750 | if (!dci) { | |
751 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
752 | "%s: Unable to allocate EDAC device\n", ecc_name); | |
753 | res = -ENOMEM; | |
754 | goto fail; | |
755 | } | |
756 | ||
757 | drvdata = dci->pvt_info; | |
758 | dci->dev = &pdev->dev; | |
759 | platform_set_drvdata(pdev, dci); | |
760 | drvdata->edac_dev_name = ecc_name; | |
761 | ||
762 | drvdata->base = devm_ioremap(&pdev->dev, r->start, resource_size(r)); | |
8b073d94 CJ |
763 | if (!drvdata->base) { |
764 | res = -ENOMEM; | |
c3eea194 | 765 | goto fail1; |
8b073d94 | 766 | } |
c3eea194 TT |
767 | |
768 | /* Get driver specific data for this EDAC device */ | |
769 | drvdata->data = of_match_node(altr_edac_device_of_match, np)->data; | |
770 | ||
771 | /* Check specific dependencies for the module */ | |
772 | if (drvdata->data->setup) { | |
328ca7ae | 773 | res = drvdata->data->setup(drvdata); |
c3eea194 TT |
774 | if (res) |
775 | goto fail1; | |
776 | } | |
777 | ||
778 | drvdata->sb_irq = platform_get_irq(pdev, 0); | |
779 | res = devm_request_irq(&pdev->dev, drvdata->sb_irq, | |
780 | altr_edac_device_handler, | |
781 | 0, dev_name(&pdev->dev), dci); | |
782 | if (res) | |
783 | goto fail1; | |
784 | ||
785 | drvdata->db_irq = platform_get_irq(pdev, 1); | |
786 | res = devm_request_irq(&pdev->dev, drvdata->db_irq, | |
787 | altr_edac_device_handler, | |
788 | 0, dev_name(&pdev->dev), dci); | |
789 | if (res) | |
790 | goto fail1; | |
791 | ||
792 | dci->mod_name = "Altera ECC Manager"; | |
793 | dci->dev_name = drvdata->edac_dev_name; | |
794 | ||
795 | res = edac_device_add_device(dci); | |
796 | if (res) | |
797 | goto fail1; | |
798 | ||
799 | altr_create_edacdev_dbgfs(dci, drvdata->data); | |
800 | ||
801 | devres_close_group(&pdev->dev, NULL); | |
802 | ||
803 | return 0; | |
804 | ||
805 | fail1: | |
806 | edac_device_free_ctl_info(dci); | |
807 | fail: | |
808 | devres_release_group(&pdev->dev, NULL); | |
809 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
810 | "%s:Error setting up EDAC device: %d\n", ecc_name, res); | |
811 | ||
812 | return res; | |
813 | } | |
814 | ||
815 | static int altr_edac_device_remove(struct platform_device *pdev) | |
816 | { | |
817 | struct edac_device_ctl_info *dci = platform_get_drvdata(pdev); | |
818 | struct altr_edac_device_dev *drvdata = dci->pvt_info; | |
819 | ||
820 | debugfs_remove_recursive(drvdata->debugfs_dir); | |
821 | edac_device_del_device(&pdev->dev); | |
822 | edac_device_free_ctl_info(dci); | |
823 | ||
824 | return 0; | |
825 | } | |
826 | ||
827 | static struct platform_driver altr_edac_device_driver = { | |
828 | .probe = altr_edac_device_probe, | |
829 | .remove = altr_edac_device_remove, | |
830 | .driver = { | |
831 | .name = "altr_edac_device", | |
832 | .of_match_table = altr_edac_device_of_match, | |
833 | }, | |
834 | }; | |
835 | module_platform_driver(altr_edac_device_driver); | |
836 | ||
6b300fb9 | 837 | /******************* Arria10 Device ECC Shared Functions *****************/ |
c3eea194 | 838 | |
1aa6eb5c AB |
839 | /* |
840 | * Test for memory's ECC dependencies upon entry because platform specific | |
841 | * startup should have initialized the memory and enabled the ECC. | |
842 | * Can't turn on ECC here because accessing un-initialized memory will | |
843 | * cause CE/UE errors possibly causing an ABORT. | |
844 | */ | |
6b300fb9 TT |
845 | static int __maybe_unused |
846 | altr_check_ecc_deps(struct altr_edac_device_dev *device) | |
1aa6eb5c AB |
847 | { |
848 | void __iomem *base = device->base; | |
849 | const struct edac_device_prv_data *prv = device->data; | |
850 | ||
851 | if (readl(base + prv->ecc_en_ofst) & prv->ecc_enable_mask) | |
852 | return 0; | |
853 | ||
854 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
855 | "%s: No ECC present or ECC disabled.\n", | |
856 | device->edac_dev_name); | |
857 | return -ENODEV; | |
858 | } | |
c3eea194 | 859 | |
6b300fb9 TT |
860 | static irqreturn_t __maybe_unused altr_edac_a10_ecc_irq(int irq, void *dev_id) |
861 | { | |
862 | struct altr_edac_device_dev *dci = dev_id; | |
863 | void __iomem *base = dci->base; | |
864 | ||
865 | if (irq == dci->sb_irq) { | |
866 | writel(ALTR_A10_ECC_SERRPENA, | |
867 | base + ALTR_A10_ECC_INTSTAT_OFST); | |
868 | edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name); | |
869 | ||
870 | return IRQ_HANDLED; | |
871 | } else if (irq == dci->db_irq) { | |
872 | writel(ALTR_A10_ECC_DERRPENA, | |
873 | base + ALTR_A10_ECC_INTSTAT_OFST); | |
874 | edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name); | |
875 | if (dci->data->panic) | |
876 | panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n"); | |
877 | ||
878 | return IRQ_HANDLED; | |
879 | } | |
880 | ||
881 | WARN_ON(1); | |
882 | ||
883 | return IRQ_NONE; | |
884 | } | |
885 | ||
1166fde9 TT |
886 | /******************* Arria10 Memory Buffer Functions *********************/ |
887 | ||
888 | static inline int a10_get_irq_mask(struct device_node *np) | |
889 | { | |
890 | int irq; | |
891 | const u32 *handle = of_get_property(np, "interrupts", NULL); | |
892 | ||
893 | if (!handle) | |
894 | return -ENODEV; | |
895 | irq = be32_to_cpup(handle); | |
896 | return irq; | |
897 | } | |
898 | ||
899 | static inline void ecc_set_bits(u32 bit_mask, void __iomem *ioaddr) | |
900 | { | |
901 | u32 value = readl(ioaddr); | |
902 | ||
903 | value |= bit_mask; | |
904 | writel(value, ioaddr); | |
905 | } | |
906 | ||
907 | static inline void ecc_clear_bits(u32 bit_mask, void __iomem *ioaddr) | |
908 | { | |
909 | u32 value = readl(ioaddr); | |
910 | ||
911 | value &= ~bit_mask; | |
912 | writel(value, ioaddr); | |
913 | } | |
914 | ||
915 | static inline int ecc_test_bits(u32 bit_mask, void __iomem *ioaddr) | |
916 | { | |
917 | u32 value = readl(ioaddr); | |
918 | ||
919 | return (value & bit_mask) ? 1 : 0; | |
920 | } | |
921 | ||
922 | /* | |
923 | * This function uses the memory initialization block in the Arria10 ECC | |
924 | * controller to initialize/clear the entire memory data and ECC data. | |
925 | */ | |
926 | static int __maybe_unused altr_init_memory_port(void __iomem *ioaddr, int port) | |
927 | { | |
928 | int limit = ALTR_A10_ECC_INIT_WATCHDOG_10US; | |
929 | u32 init_mask, stat_mask, clear_mask; | |
930 | int ret = 0; | |
931 | ||
932 | if (port) { | |
933 | init_mask = ALTR_A10_ECC_INITB; | |
934 | stat_mask = ALTR_A10_ECC_INITCOMPLETEB; | |
935 | clear_mask = ALTR_A10_ECC_ERRPENB_MASK; | |
936 | } else { | |
937 | init_mask = ALTR_A10_ECC_INITA; | |
938 | stat_mask = ALTR_A10_ECC_INITCOMPLETEA; | |
939 | clear_mask = ALTR_A10_ECC_ERRPENA_MASK; | |
940 | } | |
941 | ||
942 | ecc_set_bits(init_mask, (ioaddr + ALTR_A10_ECC_CTRL_OFST)); | |
943 | while (limit--) { | |
944 | if (ecc_test_bits(stat_mask, | |
945 | (ioaddr + ALTR_A10_ECC_INITSTAT_OFST))) | |
946 | break; | |
947 | udelay(1); | |
948 | } | |
949 | if (limit < 0) | |
950 | ret = -EBUSY; | |
951 | ||
952 | /* Clear any pending ECC interrupts */ | |
953 | writel(clear_mask, (ioaddr + ALTR_A10_ECC_INTSTAT_OFST)); | |
954 | ||
955 | return ret; | |
956 | } | |
957 | ||
958 | static __init int __maybe_unused | |
959 | altr_init_a10_ecc_block(struct device_node *np, u32 irq_mask, | |
960 | u32 ecc_ctrl_en_mask, bool dual_port) | |
961 | { | |
962 | int ret = 0; | |
963 | void __iomem *ecc_block_base; | |
964 | struct regmap *ecc_mgr_map; | |
965 | char *ecc_name; | |
966 | struct device_node *np_eccmgr; | |
967 | ||
968 | ecc_name = (char *)np->name; | |
969 | ||
970 | /* Get the ECC Manager - parent of the device EDACs */ | |
971 | np_eccmgr = of_get_parent(np); | |
064acbd4 | 972 | |
5781823f TT |
973 | ecc_mgr_map = |
974 | altr_sysmgr_regmap_lookup_by_phandle(np_eccmgr, | |
975 | "altr,sysmgr-syscon"); | |
064acbd4 | 976 | |
1166fde9 TT |
977 | of_node_put(np_eccmgr); |
978 | if (IS_ERR(ecc_mgr_map)) { | |
979 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
980 | "Unable to get syscon altr,sysmgr-syscon\n"); | |
981 | return -ENODEV; | |
982 | } | |
983 | ||
984 | /* Map the ECC Block */ | |
985 | ecc_block_base = of_iomap(np, 0); | |
986 | if (!ecc_block_base) { | |
987 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
988 | "Unable to map %s ECC block\n", ecc_name); | |
989 | return -ENODEV; | |
990 | } | |
991 | ||
992 | /* Disable ECC */ | |
993 | regmap_write(ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_SET_OFST, irq_mask); | |
994 | writel(ALTR_A10_ECC_SERRINTEN, | |
995 | (ecc_block_base + ALTR_A10_ECC_ERRINTENR_OFST)); | |
996 | ecc_clear_bits(ecc_ctrl_en_mask, | |
997 | (ecc_block_base + ALTR_A10_ECC_CTRL_OFST)); | |
998 | /* Ensure all writes complete */ | |
999 | wmb(); | |
1000 | /* Use HW initialization block to initialize memory for ECC */ | |
1001 | ret = altr_init_memory_port(ecc_block_base, 0); | |
1002 | if (ret) { | |
1003 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1004 | "ECC: cannot init %s PORTA memory\n", ecc_name); | |
1005 | goto out; | |
1006 | } | |
1007 | ||
1008 | if (dual_port) { | |
1009 | ret = altr_init_memory_port(ecc_block_base, 1); | |
1010 | if (ret) { | |
1011 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1012 | "ECC: cannot init %s PORTB memory\n", | |
1013 | ecc_name); | |
1014 | goto out; | |
1015 | } | |
1016 | } | |
1017 | ||
1018 | /* Interrupt mode set to every SBERR */ | |
1019 | regmap_write(ecc_mgr_map, ALTR_A10_ECC_INTMODE_OFST, | |
1020 | ALTR_A10_ECC_INTMODE); | |
1021 | /* Enable ECC */ | |
1022 | ecc_set_bits(ecc_ctrl_en_mask, (ecc_block_base + | |
1023 | ALTR_A10_ECC_CTRL_OFST)); | |
1024 | writel(ALTR_A10_ECC_SERRINTEN, | |
1025 | (ecc_block_base + ALTR_A10_ECC_ERRINTENS_OFST)); | |
1026 | regmap_write(ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_CLR_OFST, irq_mask); | |
1027 | /* Ensure all writes complete */ | |
1028 | wmb(); | |
1029 | out: | |
1030 | iounmap(ecc_block_base); | |
1031 | return ret; | |
1032 | } | |
1033 | ||
1034 | static int validate_parent_available(struct device_node *np); | |
1035 | static const struct of_device_id altr_edac_a10_device_of_match[]; | |
1036 | static int __init __maybe_unused altr_init_a10_ecc_device_type(char *compat) | |
1037 | { | |
1038 | int irq; | |
25b223dd TT |
1039 | struct device_node *child, *np; |
1040 | ||
25b223dd TT |
1041 | np = of_find_compatible_node(NULL, NULL, |
1042 | "altr,socfpga-a10-ecc-manager"); | |
1166fde9 TT |
1043 | if (!np) { |
1044 | edac_printk(KERN_ERR, EDAC_DEVICE, "ECC Manager not found\n"); | |
1045 | return -ENODEV; | |
1046 | } | |
1047 | ||
1048 | for_each_child_of_node(np, child) { | |
1049 | const struct of_device_id *pdev_id; | |
1050 | const struct edac_device_prv_data *prv; | |
1051 | ||
1052 | if (!of_device_is_available(child)) | |
1053 | continue; | |
1054 | if (!of_device_is_compatible(child, compat)) | |
1055 | continue; | |
1056 | ||
1057 | if (validate_parent_available(child)) | |
1058 | continue; | |
1059 | ||
1060 | irq = a10_get_irq_mask(child); | |
1061 | if (irq < 0) | |
1062 | continue; | |
1063 | ||
1064 | /* Get matching node and check for valid result */ | |
1065 | pdev_id = of_match_node(altr_edac_a10_device_of_match, child); | |
1066 | if (IS_ERR_OR_NULL(pdev_id)) | |
1067 | continue; | |
1068 | ||
1069 | /* Validate private data pointer before dereferencing */ | |
1070 | prv = pdev_id->data; | |
1071 | if (!prv) | |
1072 | continue; | |
1073 | ||
1074 | altr_init_a10_ecc_block(child, BIT(irq), | |
1075 | prv->ecc_enable_mask, 0); | |
1076 | } | |
1077 | ||
1078 | of_node_put(np); | |
1079 | return 0; | |
1080 | } | |
1081 | ||
3123c5c4 TT |
1082 | /*********************** SDRAM EDAC Device Functions *********************/ |
1083 | ||
1084 | #ifdef CONFIG_EDAC_ALTERA_SDRAM | |
1085 | ||
1086 | static const struct edac_device_prv_data s10_sdramecc_data = { | |
1087 | .setup = altr_check_ecc_deps, | |
1088 | .ce_clear_mask = ALTR_S10_ECC_SERRPENA, | |
1089 | .ue_clear_mask = ALTR_S10_ECC_DERRPENA, | |
1090 | .ecc_enable_mask = ALTR_S10_ECC_EN, | |
1091 | .ecc_en_ofst = ALTR_S10_ECC_CTRL_SDRAM_OFST, | |
1092 | .ce_set_mask = ALTR_S10_ECC_TSERRA, | |
1093 | .ue_set_mask = ALTR_S10_ECC_TDERRA, | |
1094 | .set_err_ofst = ALTR_S10_ECC_INTTEST_OFST, | |
1095 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
1096 | .inject_fops = &altr_edac_a10_device_inject_fops, | |
1097 | }; | |
1098 | #endif /* CONFIG_EDAC_ALTERA_SDRAM */ | |
1099 | ||
6b300fb9 TT |
1100 | /*********************** OCRAM EDAC Device Functions *********************/ |
1101 | ||
1102 | #ifdef CONFIG_EDAC_ALTERA_OCRAM | |
1103 | ||
c3eea194 TT |
1104 | static void *ocram_alloc_mem(size_t size, void **other) |
1105 | { | |
1106 | struct device_node *np; | |
1107 | struct gen_pool *gp; | |
1108 | void *sram_addr; | |
1109 | ||
1110 | np = of_find_compatible_node(NULL, NULL, "altr,socfpga-ocram-ecc"); | |
1111 | if (!np) | |
1112 | return NULL; | |
1113 | ||
1114 | gp = of_gen_pool_get(np, "iram", 0); | |
1115 | of_node_put(np); | |
1116 | if (!gp) | |
1117 | return NULL; | |
1118 | ||
1119 | sram_addr = (void *)gen_pool_alloc(gp, size); | |
1120 | if (!sram_addr) | |
1121 | return NULL; | |
1122 | ||
1123 | memset(sram_addr, 0, size); | |
1124 | /* Ensure data is written out */ | |
1125 | wmb(); | |
1126 | ||
1127 | /* Remember this handle for freeing later */ | |
1128 | *other = gp; | |
1129 | ||
1130 | return sram_addr; | |
1131 | } | |
1132 | ||
1133 | static void ocram_free_mem(void *p, size_t size, void *other) | |
1134 | { | |
9ef20753 | 1135 | gen_pool_free((struct gen_pool *)other, (unsigned long)p, size); |
c3eea194 TT |
1136 | } |
1137 | ||
1cf70377 | 1138 | static const struct edac_device_prv_data ocramecc_data = { |
aa1f06dc | 1139 | .setup = altr_check_ecc_deps, |
c3eea194 TT |
1140 | .ce_clear_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_SERR), |
1141 | .ue_clear_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_DERR), | |
c3eea194 TT |
1142 | .alloc_mem = ocram_alloc_mem, |
1143 | .free_mem = ocram_free_mem, | |
1144 | .ecc_enable_mask = ALTR_OCR_ECC_EN, | |
943ad917 | 1145 | .ecc_en_ofst = ALTR_OCR_ECC_REG_OFFSET, |
c3eea194 TT |
1146 | .ce_set_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_INJS), |
1147 | .ue_set_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_INJD), | |
811fce4f | 1148 | .set_err_ofst = ALTR_OCR_ECC_REG_OFFSET, |
c3eea194 | 1149 | .trig_alloc_sz = ALTR_TRIG_OCRAM_BYTE_SIZE, |
e17ced2c | 1150 | .inject_fops = &altr_edac_device_inject_fops, |
c3eea194 TT |
1151 | }; |
1152 | ||
17e47dc6 TT |
1153 | static int __maybe_unused |
1154 | altr_check_ocram_deps_init(struct altr_edac_device_dev *device) | |
1155 | { | |
1156 | void __iomem *base = device->base; | |
1157 | int ret; | |
1158 | ||
1159 | ret = altr_check_ecc_deps(device); | |
1160 | if (ret) | |
1161 | return ret; | |
1162 | ||
1163 | /* Verify OCRAM has been initialized */ | |
1164 | if (!ecc_test_bits(ALTR_A10_ECC_INITCOMPLETEA, | |
1165 | (base + ALTR_A10_ECC_INITSTAT_OFST))) | |
1166 | return -ENODEV; | |
1167 | ||
1168 | /* Enable IRQ on Single Bit Error */ | |
1169 | writel(ALTR_A10_ECC_SERRINTEN, (base + ALTR_A10_ECC_ERRINTENS_OFST)); | |
1170 | /* Ensure all writes complete */ | |
1171 | wmb(); | |
1172 | ||
1173 | return 0; | |
1174 | } | |
1175 | ||
1cf70377 | 1176 | static const struct edac_device_prv_data a10_ocramecc_data = { |
17e47dc6 | 1177 | .setup = altr_check_ocram_deps_init, |
c7b4be8d TT |
1178 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, |
1179 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
1180 | .irq_status_mask = A10_SYSMGR_ECC_INTSTAT_OCRAM, | |
c7b4be8d TT |
1181 | .ecc_enable_mask = ALTR_A10_OCRAM_ECC_EN_CTL, |
1182 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1183 | .ce_set_mask = ALTR_A10_ECC_TSERRA, | |
1184 | .ue_set_mask = ALTR_A10_ECC_TDERRA, | |
1185 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1186 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
17e47dc6 | 1187 | .inject_fops = &altr_edac_a10_device_inject2_fops, |
2b083d65 TT |
1188 | /* |
1189 | * OCRAM panic on uncorrectable error because sleep/resume | |
1190 | * functions and FPGA contents are stored in OCRAM. Prefer | |
1191 | * a kernel panic over executing/loading corrupted data. | |
1192 | */ | |
1193 | .panic = true, | |
c7b4be8d TT |
1194 | }; |
1195 | ||
c3eea194 TT |
1196 | #endif /* CONFIG_EDAC_ALTERA_OCRAM */ |
1197 | ||
1198 | /********************* L2 Cache EDAC Device Functions ********************/ | |
1199 | ||
1200 | #ifdef CONFIG_EDAC_ALTERA_L2C | |
1201 | ||
1202 | static void *l2_alloc_mem(size_t size, void **other) | |
1203 | { | |
1204 | struct device *dev = *other; | |
1205 | void *ptemp = devm_kzalloc(dev, size, GFP_KERNEL); | |
1206 | ||
1207 | if (!ptemp) | |
1208 | return NULL; | |
1209 | ||
1210 | /* Make sure everything is written out */ | |
1211 | wmb(); | |
1212 | ||
1213 | /* | |
1214 | * Clean all cache levels up to LoC (includes L2) | |
1215 | * This ensures the corrupted data is written into | |
1216 | * L2 cache for readback test (which causes ECC error). | |
1217 | */ | |
1218 | flush_cache_all(); | |
1219 | ||
1220 | return ptemp; | |
1221 | } | |
1222 | ||
1223 | static void l2_free_mem(void *p, size_t size, void *other) | |
1224 | { | |
1225 | struct device *dev = other; | |
1226 | ||
1227 | if (dev && p) | |
1228 | devm_kfree(dev, p); | |
1229 | } | |
1230 | ||
1231 | /* | |
1232 | * altr_l2_check_deps() | |
1233 | * Test for L2 cache ECC dependencies upon entry because | |
1234 | * platform specific startup should have initialized the L2 | |
1235 | * memory and enabled the ECC. | |
1236 | * Bail if ECC is not enabled. | |
1237 | * Note that L2 Cache Enable is forced at build time. | |
1238 | */ | |
328ca7ae | 1239 | static int altr_l2_check_deps(struct altr_edac_device_dev *device) |
c3eea194 | 1240 | { |
328ca7ae | 1241 | void __iomem *base = device->base; |
27439a1a TT |
1242 | const struct edac_device_prv_data *prv = device->data; |
1243 | ||
1244 | if ((readl(base) & prv->ecc_enable_mask) == | |
1245 | prv->ecc_enable_mask) | |
c3eea194 TT |
1246 | return 0; |
1247 | ||
1248 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1249 | "L2: No ECC present, or ECC disabled\n"); | |
1250 | return -ENODEV; | |
1251 | } | |
1252 | ||
13ab8448 | 1253 | static irqreturn_t altr_edac_a10_l2_irq(int irq, void *dev_id) |
588cb03e | 1254 | { |
13ab8448 TT |
1255 | struct altr_edac_device_dev *dci = dev_id; |
1256 | ||
1257 | if (irq == dci->sb_irq) { | |
588cb03e TT |
1258 | regmap_write(dci->edac->ecc_mgr_map, |
1259 | A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST, | |
1260 | A10_SYSGMR_MPU_CLEAR_L2_ECC_SB); | |
1261 | edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name); | |
13ab8448 TT |
1262 | |
1263 | return IRQ_HANDLED; | |
1264 | } else if (irq == dci->db_irq) { | |
588cb03e TT |
1265 | regmap_write(dci->edac->ecc_mgr_map, |
1266 | A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST, | |
1267 | A10_SYSGMR_MPU_CLEAR_L2_ECC_MB); | |
1268 | edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name); | |
1269 | panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n"); | |
13ab8448 TT |
1270 | |
1271 | return IRQ_HANDLED; | |
588cb03e | 1272 | } |
13ab8448 TT |
1273 | |
1274 | WARN_ON(1); | |
1275 | ||
1276 | return IRQ_NONE; | |
588cb03e TT |
1277 | } |
1278 | ||
1cf70377 | 1279 | static const struct edac_device_prv_data l2ecc_data = { |
c3eea194 TT |
1280 | .setup = altr_l2_check_deps, |
1281 | .ce_clear_mask = 0, | |
1282 | .ue_clear_mask = 0, | |
c3eea194 TT |
1283 | .alloc_mem = l2_alloc_mem, |
1284 | .free_mem = l2_free_mem, | |
1285 | .ecc_enable_mask = ALTR_L2_ECC_EN, | |
1286 | .ce_set_mask = (ALTR_L2_ECC_EN | ALTR_L2_ECC_INJS), | |
1287 | .ue_set_mask = (ALTR_L2_ECC_EN | ALTR_L2_ECC_INJD), | |
811fce4f | 1288 | .set_err_ofst = ALTR_L2_ECC_REG_OFFSET, |
c3eea194 | 1289 | .trig_alloc_sz = ALTR_TRIG_L2C_BYTE_SIZE, |
e17ced2c | 1290 | .inject_fops = &altr_edac_device_inject_fops, |
c3eea194 TT |
1291 | }; |
1292 | ||
1cf70377 | 1293 | static const struct edac_device_prv_data a10_l2ecc_data = { |
588cb03e TT |
1294 | .setup = altr_l2_check_deps, |
1295 | .ce_clear_mask = ALTR_A10_L2_ECC_SERR_CLR, | |
1296 | .ue_clear_mask = ALTR_A10_L2_ECC_MERR_CLR, | |
1297 | .irq_status_mask = A10_SYSMGR_ECC_INTSTAT_L2, | |
588cb03e TT |
1298 | .alloc_mem = l2_alloc_mem, |
1299 | .free_mem = l2_free_mem, | |
1300 | .ecc_enable_mask = ALTR_A10_L2_ECC_EN_CTL, | |
1301 | .ce_set_mask = ALTR_A10_L2_ECC_CE_INJ_MASK, | |
1302 | .ue_set_mask = ALTR_A10_L2_ECC_UE_INJ_MASK, | |
1303 | .set_err_ofst = ALTR_A10_L2_ECC_INJ_OFST, | |
1304 | .ecc_irq_handler = altr_edac_a10_l2_irq, | |
1305 | .trig_alloc_sz = ALTR_TRIG_L2C_BYTE_SIZE, | |
e17ced2c | 1306 | .inject_fops = &altr_edac_device_inject_fops, |
588cb03e TT |
1307 | }; |
1308 | ||
c3eea194 TT |
1309 | #endif /* CONFIG_EDAC_ALTERA_L2C */ |
1310 | ||
ab8c1e0f TT |
1311 | /********************* Ethernet Device Functions ********************/ |
1312 | ||
1313 | #ifdef CONFIG_EDAC_ALTERA_ETHERNET | |
1314 | ||
788586ef TT |
1315 | static int __init socfpga_init_ethernet_ecc(struct altr_edac_device_dev *dev) |
1316 | { | |
1317 | int ret; | |
1318 | ||
1319 | ret = altr_init_a10_ecc_device_type("altr,socfpga-eth-mac-ecc"); | |
1320 | if (ret) | |
1321 | return ret; | |
1322 | ||
1323 | return altr_check_ecc_deps(dev); | |
1324 | } | |
1325 | ||
ab8c1e0f | 1326 | static const struct edac_device_prv_data a10_enetecc_data = { |
788586ef | 1327 | .setup = socfpga_init_ethernet_ecc, |
ab8c1e0f TT |
1328 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, |
1329 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
ab8c1e0f TT |
1330 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1331 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1332 | .ce_set_mask = ALTR_A10_ECC_TSERRA, | |
1333 | .ue_set_mask = ALTR_A10_ECC_TDERRA, | |
1334 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1335 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
064acbd4 | 1336 | .inject_fops = &altr_edac_a10_device_inject2_fops, |
ab8c1e0f TT |
1337 | }; |
1338 | ||
ab8c1e0f TT |
1339 | #endif /* CONFIG_EDAC_ALTERA_ETHERNET */ |
1340 | ||
c6882fb2 TT |
1341 | /********************** NAND Device Functions **********************/ |
1342 | ||
1343 | #ifdef CONFIG_EDAC_ALTERA_NAND | |
1344 | ||
788586ef TT |
1345 | static int __init socfpga_init_nand_ecc(struct altr_edac_device_dev *device) |
1346 | { | |
1347 | int ret; | |
1348 | ||
1349 | ret = altr_init_a10_ecc_device_type("altr,socfpga-nand-ecc"); | |
1350 | if (ret) | |
1351 | return ret; | |
1352 | ||
1353 | return altr_check_ecc_deps(device); | |
1354 | } | |
1355 | ||
c6882fb2 | 1356 | static const struct edac_device_prv_data a10_nandecc_data = { |
788586ef | 1357 | .setup = socfpga_init_nand_ecc, |
c6882fb2 TT |
1358 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, |
1359 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
c6882fb2 TT |
1360 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1361 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1362 | .ce_set_mask = ALTR_A10_ECC_TSERRA, | |
1363 | .ue_set_mask = ALTR_A10_ECC_TDERRA, | |
1364 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1365 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
1366 | .inject_fops = &altr_edac_a10_device_inject_fops, | |
1367 | }; | |
1368 | ||
c6882fb2 TT |
1369 | #endif /* CONFIG_EDAC_ALTERA_NAND */ |
1370 | ||
e8263793 TT |
1371 | /********************** DMA Device Functions **********************/ |
1372 | ||
1373 | #ifdef CONFIG_EDAC_ALTERA_DMA | |
1374 | ||
788586ef TT |
1375 | static int __init socfpga_init_dma_ecc(struct altr_edac_device_dev *device) |
1376 | { | |
1377 | int ret; | |
1378 | ||
1379 | ret = altr_init_a10_ecc_device_type("altr,socfpga-dma-ecc"); | |
1380 | if (ret) | |
1381 | return ret; | |
1382 | ||
1383 | return altr_check_ecc_deps(device); | |
1384 | } | |
1385 | ||
e8263793 | 1386 | static const struct edac_device_prv_data a10_dmaecc_data = { |
788586ef | 1387 | .setup = socfpga_init_dma_ecc, |
e8263793 TT |
1388 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, |
1389 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
e8263793 TT |
1390 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1391 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1392 | .ce_set_mask = ALTR_A10_ECC_TSERRA, | |
1393 | .ue_set_mask = ALTR_A10_ECC_TDERRA, | |
1394 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1395 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
1396 | .inject_fops = &altr_edac_a10_device_inject_fops, | |
1397 | }; | |
1398 | ||
e8263793 TT |
1399 | #endif /* CONFIG_EDAC_ALTERA_DMA */ |
1400 | ||
c609581d TT |
1401 | /********************** USB Device Functions **********************/ |
1402 | ||
1403 | #ifdef CONFIG_EDAC_ALTERA_USB | |
1404 | ||
788586ef TT |
1405 | static int __init socfpga_init_usb_ecc(struct altr_edac_device_dev *device) |
1406 | { | |
1407 | int ret; | |
1408 | ||
1409 | ret = altr_init_a10_ecc_device_type("altr,socfpga-usb-ecc"); | |
1410 | if (ret) | |
1411 | return ret; | |
1412 | ||
1413 | return altr_check_ecc_deps(device); | |
1414 | } | |
1415 | ||
c609581d | 1416 | static const struct edac_device_prv_data a10_usbecc_data = { |
788586ef | 1417 | .setup = socfpga_init_usb_ecc, |
c609581d TT |
1418 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, |
1419 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
c609581d TT |
1420 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1421 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1422 | .ce_set_mask = ALTR_A10_ECC_TSERRA, | |
1423 | .ue_set_mask = ALTR_A10_ECC_TDERRA, | |
1424 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1425 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
064acbd4 | 1426 | .inject_fops = &altr_edac_a10_device_inject2_fops, |
c609581d TT |
1427 | }; |
1428 | ||
c609581d TT |
1429 | #endif /* CONFIG_EDAC_ALTERA_USB */ |
1430 | ||
485fe9e2 TT |
1431 | /********************** QSPI Device Functions **********************/ |
1432 | ||
1433 | #ifdef CONFIG_EDAC_ALTERA_QSPI | |
1434 | ||
788586ef TT |
1435 | static int __init socfpga_init_qspi_ecc(struct altr_edac_device_dev *device) |
1436 | { | |
1437 | int ret; | |
1438 | ||
1439 | ret = altr_init_a10_ecc_device_type("altr,socfpga-qspi-ecc"); | |
1440 | if (ret) | |
1441 | return ret; | |
1442 | ||
1443 | return altr_check_ecc_deps(device); | |
1444 | } | |
1445 | ||
485fe9e2 | 1446 | static const struct edac_device_prv_data a10_qspiecc_data = { |
788586ef | 1447 | .setup = socfpga_init_qspi_ecc, |
485fe9e2 TT |
1448 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, |
1449 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
485fe9e2 TT |
1450 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1451 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1452 | .ce_set_mask = ALTR_A10_ECC_TSERRA, | |
1453 | .ue_set_mask = ALTR_A10_ECC_TDERRA, | |
1454 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1455 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
1456 | .inject_fops = &altr_edac_a10_device_inject_fops, | |
1457 | }; | |
1458 | ||
485fe9e2 TT |
1459 | #endif /* CONFIG_EDAC_ALTERA_QSPI */ |
1460 | ||
91104984 TT |
1461 | /********************* SDMMC Device Functions **********************/ |
1462 | ||
1463 | #ifdef CONFIG_EDAC_ALTERA_SDMMC | |
1464 | ||
1465 | static const struct edac_device_prv_data a10_sdmmceccb_data; | |
1466 | static int altr_portb_setup(struct altr_edac_device_dev *device) | |
1467 | { | |
1468 | struct edac_device_ctl_info *dci; | |
1469 | struct altr_edac_device_dev *altdev; | |
1470 | char *ecc_name = "sdmmcb-ecc"; | |
1471 | int edac_idx, rc; | |
1472 | struct device_node *np; | |
1473 | const struct edac_device_prv_data *prv = &a10_sdmmceccb_data; | |
1474 | ||
1475 | rc = altr_check_ecc_deps(device); | |
1476 | if (rc) | |
1477 | return rc; | |
1478 | ||
1479 | np = of_find_compatible_node(NULL, NULL, "altr,socfpga-sdmmc-ecc"); | |
1480 | if (!np) { | |
1481 | edac_printk(KERN_WARNING, EDAC_DEVICE, "SDMMC node not found\n"); | |
1482 | return -ENODEV; | |
1483 | } | |
1484 | ||
1485 | /* Create the PortB EDAC device */ | |
1486 | edac_idx = edac_device_alloc_index(); | |
1487 | dci = edac_device_alloc_ctl_info(sizeof(*altdev), ecc_name, 1, | |
1488 | ecc_name, 1, 0, NULL, 0, edac_idx); | |
1489 | if (!dci) { | |
1490 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1491 | "%s: Unable to allocate PortB EDAC device\n", | |
1492 | ecc_name); | |
1493 | return -ENOMEM; | |
1494 | } | |
1495 | ||
1496 | /* Initialize the PortB EDAC device structure from PortA structure */ | |
1497 | altdev = dci->pvt_info; | |
1498 | *altdev = *device; | |
1499 | ||
1500 | if (!devres_open_group(&altdev->ddev, altr_portb_setup, GFP_KERNEL)) | |
1501 | return -ENOMEM; | |
1502 | ||
1503 | /* Update PortB specific values */ | |
1504 | altdev->edac_dev_name = ecc_name; | |
1505 | altdev->edac_idx = edac_idx; | |
1506 | altdev->edac_dev = dci; | |
1507 | altdev->data = prv; | |
1508 | dci->dev = &altdev->ddev; | |
1509 | dci->ctl_name = "Altera ECC Manager"; | |
1510 | dci->mod_name = ecc_name; | |
1511 | dci->dev_name = ecc_name; | |
1512 | ||
098da961 KK |
1513 | /* |
1514 | * Update the PortB IRQs - A10 has 4, S10 has 2, Index accordingly | |
1515 | * | |
1516 | * FIXME: Instead of ifdefs with different architectures the driver | |
1517 | * should properly use compatibles. | |
1518 | */ | |
1519 | #ifdef CONFIG_64BIT | |
a428b4d3 TT |
1520 | altdev->sb_irq = irq_of_parse_and_map(np, 1); |
1521 | #else | |
91104984 | 1522 | altdev->sb_irq = irq_of_parse_and_map(np, 2); |
a428b4d3 | 1523 | #endif |
91104984 TT |
1524 | if (!altdev->sb_irq) { |
1525 | edac_printk(KERN_ERR, EDAC_DEVICE, "Error PortB SBIRQ alloc\n"); | |
1526 | rc = -ENODEV; | |
1527 | goto err_release_group_1; | |
1528 | } | |
1529 | rc = devm_request_irq(&altdev->ddev, altdev->sb_irq, | |
1530 | prv->ecc_irq_handler, | |
a29d64a4 TT |
1531 | IRQF_ONESHOT | IRQF_TRIGGER_HIGH, |
1532 | ecc_name, altdev); | |
91104984 TT |
1533 | if (rc) { |
1534 | edac_printk(KERN_ERR, EDAC_DEVICE, "PortB SBERR IRQ error\n"); | |
1535 | goto err_release_group_1; | |
1536 | } | |
1537 | ||
098da961 | 1538 | #ifdef CONFIG_64BIT |
a428b4d3 TT |
1539 | /* Use IRQ to determine SError origin instead of assigning IRQ */ |
1540 | rc = of_property_read_u32_index(np, "interrupts", 1, &altdev->db_irq); | |
1541 | if (rc) { | |
1542 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1543 | "Error PortB DBIRQ alloc\n"); | |
1544 | goto err_release_group_1; | |
1545 | } | |
1546 | #else | |
91104984 TT |
1547 | altdev->db_irq = irq_of_parse_and_map(np, 3); |
1548 | if (!altdev->db_irq) { | |
1549 | edac_printk(KERN_ERR, EDAC_DEVICE, "Error PortB DBIRQ alloc\n"); | |
1550 | rc = -ENODEV; | |
1551 | goto err_release_group_1; | |
1552 | } | |
1553 | rc = devm_request_irq(&altdev->ddev, altdev->db_irq, | |
1554 | prv->ecc_irq_handler, | |
a29d64a4 TT |
1555 | IRQF_ONESHOT | IRQF_TRIGGER_HIGH, |
1556 | ecc_name, altdev); | |
91104984 TT |
1557 | if (rc) { |
1558 | edac_printk(KERN_ERR, EDAC_DEVICE, "PortB DBERR IRQ error\n"); | |
1559 | goto err_release_group_1; | |
1560 | } | |
a428b4d3 | 1561 | #endif |
91104984 TT |
1562 | |
1563 | rc = edac_device_add_device(dci); | |
1564 | if (rc) { | |
1565 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1566 | "edac_device_add_device portB failed\n"); | |
1567 | rc = -ENOMEM; | |
1568 | goto err_release_group_1; | |
1569 | } | |
1570 | altr_create_edacdev_dbgfs(dci, prv); | |
1571 | ||
1572 | list_add(&altdev->next, &altdev->edac->a10_ecc_devices); | |
1573 | ||
1574 | devres_remove_group(&altdev->ddev, altr_portb_setup); | |
1575 | ||
1576 | return 0; | |
1577 | ||
1578 | err_release_group_1: | |
1579 | edac_device_free_ctl_info(dci); | |
1580 | devres_release_group(&altdev->ddev, altr_portb_setup); | |
1581 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1582 | "%s:Error setting up EDAC device: %d\n", ecc_name, rc); | |
1583 | return rc; | |
1584 | } | |
1585 | ||
788586ef TT |
1586 | static int __init socfpga_init_sdmmc_ecc(struct altr_edac_device_dev *device) |
1587 | { | |
1588 | int rc = -ENODEV; | |
1589 | struct device_node *child; | |
1590 | ||
1591 | child = of_find_compatible_node(NULL, NULL, "altr,socfpga-sdmmc-ecc"); | |
1592 | if (!child) | |
1593 | return -ENODEV; | |
1594 | ||
1595 | if (!of_device_is_available(child)) | |
1596 | goto exit; | |
1597 | ||
1598 | if (validate_parent_available(child)) | |
1599 | goto exit; | |
1600 | ||
1601 | /* Init portB */ | |
1602 | rc = altr_init_a10_ecc_block(child, ALTR_A10_SDMMC_IRQ_MASK, | |
1603 | a10_sdmmceccb_data.ecc_enable_mask, 1); | |
1604 | if (rc) | |
1605 | goto exit; | |
1606 | ||
1607 | /* Setup portB */ | |
1608 | return altr_portb_setup(device); | |
1609 | ||
1610 | exit: | |
1611 | of_node_put(child); | |
1612 | return rc; | |
1613 | } | |
1614 | ||
91104984 TT |
1615 | static irqreturn_t altr_edac_a10_ecc_irq_portb(int irq, void *dev_id) |
1616 | { | |
1617 | struct altr_edac_device_dev *ad = dev_id; | |
1618 | void __iomem *base = ad->base; | |
1619 | const struct edac_device_prv_data *priv = ad->data; | |
1620 | ||
1621 | if (irq == ad->sb_irq) { | |
1622 | writel(priv->ce_clear_mask, | |
1623 | base + ALTR_A10_ECC_INTSTAT_OFST); | |
1624 | edac_device_handle_ce(ad->edac_dev, 0, 0, ad->edac_dev_name); | |
1625 | return IRQ_HANDLED; | |
1626 | } else if (irq == ad->db_irq) { | |
1627 | writel(priv->ue_clear_mask, | |
1628 | base + ALTR_A10_ECC_INTSTAT_OFST); | |
1629 | edac_device_handle_ue(ad->edac_dev, 0, 0, ad->edac_dev_name); | |
1630 | return IRQ_HANDLED; | |
1631 | } | |
1632 | ||
1633 | WARN_ONCE(1, "Unhandled IRQ%d on Port B.", irq); | |
1634 | ||
1635 | return IRQ_NONE; | |
1636 | } | |
1637 | ||
1638 | static const struct edac_device_prv_data a10_sdmmcecca_data = { | |
788586ef | 1639 | .setup = socfpga_init_sdmmc_ecc, |
91104984 TT |
1640 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, |
1641 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
91104984 TT |
1642 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1643 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1644 | .ce_set_mask = ALTR_A10_ECC_SERRPENA, | |
1645 | .ue_set_mask = ALTR_A10_ECC_DERRPENA, | |
1646 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1647 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
1648 | .inject_fops = &altr_edac_a10_device_inject_fops, | |
1649 | }; | |
1650 | ||
1651 | static const struct edac_device_prv_data a10_sdmmceccb_data = { | |
788586ef | 1652 | .setup = socfpga_init_sdmmc_ecc, |
91104984 TT |
1653 | .ce_clear_mask = ALTR_A10_ECC_SERRPENB, |
1654 | .ue_clear_mask = ALTR_A10_ECC_DERRPENB, | |
91104984 TT |
1655 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1656 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1657 | .ce_set_mask = ALTR_A10_ECC_TSERRB, | |
1658 | .ue_set_mask = ALTR_A10_ECC_TDERRB, | |
1659 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1660 | .ecc_irq_handler = altr_edac_a10_ecc_irq_portb, | |
1661 | .inject_fops = &altr_edac_a10_device_inject_fops, | |
1662 | }; | |
1663 | ||
91104984 TT |
1664 | #endif /* CONFIG_EDAC_ALTERA_SDMMC */ |
1665 | ||
588cb03e | 1666 | /********************* Arria10 EDAC Device Functions *************************/ |
ab564cb5 TT |
1667 | static const struct of_device_id altr_edac_a10_device_of_match[] = { |
1668 | #ifdef CONFIG_EDAC_ALTERA_L2C | |
1669 | { .compatible = "altr,socfpga-a10-l2-ecc", .data = &a10_l2ecc_data }, | |
1670 | #endif | |
1671 | #ifdef CONFIG_EDAC_ALTERA_OCRAM | |
1672 | { .compatible = "altr,socfpga-a10-ocram-ecc", | |
1673 | .data = &a10_ocramecc_data }, | |
ab8c1e0f TT |
1674 | #endif |
1675 | #ifdef CONFIG_EDAC_ALTERA_ETHERNET | |
1676 | { .compatible = "altr,socfpga-eth-mac-ecc", | |
1677 | .data = &a10_enetecc_data }, | |
c6882fb2 TT |
1678 | #endif |
1679 | #ifdef CONFIG_EDAC_ALTERA_NAND | |
1680 | { .compatible = "altr,socfpga-nand-ecc", .data = &a10_nandecc_data }, | |
e8263793 TT |
1681 | #endif |
1682 | #ifdef CONFIG_EDAC_ALTERA_DMA | |
1683 | { .compatible = "altr,socfpga-dma-ecc", .data = &a10_dmaecc_data }, | |
c609581d TT |
1684 | #endif |
1685 | #ifdef CONFIG_EDAC_ALTERA_USB | |
1686 | { .compatible = "altr,socfpga-usb-ecc", .data = &a10_usbecc_data }, | |
485fe9e2 TT |
1687 | #endif |
1688 | #ifdef CONFIG_EDAC_ALTERA_QSPI | |
1689 | { .compatible = "altr,socfpga-qspi-ecc", .data = &a10_qspiecc_data }, | |
91104984 TT |
1690 | #endif |
1691 | #ifdef CONFIG_EDAC_ALTERA_SDMMC | |
1692 | { .compatible = "altr,socfpga-sdmmc-ecc", .data = &a10_sdmmcecca_data }, | |
3123c5c4 TT |
1693 | #endif |
1694 | #ifdef CONFIG_EDAC_ALTERA_SDRAM | |
1695 | { .compatible = "altr,sdram-edac-s10", .data = &s10_sdramecc_data }, | |
ab564cb5 TT |
1696 | #endif |
1697 | {}, | |
1698 | }; | |
1699 | MODULE_DEVICE_TABLE(of, altr_edac_a10_device_of_match); | |
588cb03e TT |
1700 | |
1701 | /* | |
1702 | * The Arria10 EDAC Device Functions differ from the Cyclone5/Arria5 | |
1703 | * because 2 IRQs are shared among the all ECC peripherals. The ECC | |
1704 | * manager manages the IRQs and the children. | |
1705 | * Based on xgene_edac.c peripheral code. | |
1706 | */ | |
1707 | ||
7d07deb3 KK |
1708 | static ssize_t __maybe_unused |
1709 | altr_edac_a10_device_trig(struct file *file, const char __user *user_buf, | |
1710 | size_t count, loff_t *ppos) | |
c7b4be8d TT |
1711 | { |
1712 | struct edac_device_ctl_info *edac_dci = file->private_data; | |
1713 | struct altr_edac_device_dev *drvdata = edac_dci->pvt_info; | |
1714 | const struct edac_device_prv_data *priv = drvdata->data; | |
1715 | void __iomem *set_addr = (drvdata->base + priv->set_err_ofst); | |
1716 | unsigned long flags; | |
1717 | u8 trig_type; | |
1718 | ||
1719 | if (!user_buf || get_user(trig_type, user_buf)) | |
1720 | return -EFAULT; | |
1721 | ||
1722 | local_irq_save(flags); | |
1723 | if (trig_type == ALTR_UE_TRIGGER_CHAR) | |
1724 | writel(priv->ue_set_mask, set_addr); | |
1725 | else | |
1726 | writel(priv->ce_set_mask, set_addr); | |
064acbd4 TT |
1727 | |
1728 | /* Ensure the interrupt test bits are set */ | |
1729 | wmb(); | |
1730 | local_irq_restore(flags); | |
1731 | ||
1732 | return count; | |
1733 | } | |
1734 | ||
1735 | /* | |
1736 | * The Stratix10 EDAC Error Injection Functions differ from Arria10 | |
1737 | * slightly. A few Arria10 peripherals can use this injection function. | |
1738 | * Inject the error into the memory and then readback to trigger the IRQ. | |
1739 | */ | |
7d07deb3 KK |
1740 | static ssize_t __maybe_unused |
1741 | altr_edac_a10_device_trig2(struct file *file, const char __user *user_buf, | |
1742 | size_t count, loff_t *ppos) | |
064acbd4 TT |
1743 | { |
1744 | struct edac_device_ctl_info *edac_dci = file->private_data; | |
1745 | struct altr_edac_device_dev *drvdata = edac_dci->pvt_info; | |
1746 | const struct edac_device_prv_data *priv = drvdata->data; | |
1747 | void __iomem *set_addr = (drvdata->base + priv->set_err_ofst); | |
1748 | unsigned long flags; | |
1749 | u8 trig_type; | |
1750 | ||
1751 | if (!user_buf || get_user(trig_type, user_buf)) | |
1752 | return -EFAULT; | |
1753 | ||
1754 | local_irq_save(flags); | |
1755 | if (trig_type == ALTR_UE_TRIGGER_CHAR) { | |
1756 | writel(priv->ue_set_mask, set_addr); | |
1757 | } else { | |
436b0a58 | 1758 | /* Setup read/write of 4 bytes */ |
064acbd4 TT |
1759 | writel(ECC_WORD_WRITE, drvdata->base + ECC_BLK_DBYTECTRL_OFST); |
1760 | /* Setup Address to 0 */ | |
436b0a58 TT |
1761 | writel(0, drvdata->base + ECC_BLK_ADDRESS_OFST); |
1762 | /* Setup accctrl to read & ecc & data override */ | |
1763 | writel(ECC_READ_EDOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST); | |
064acbd4 TT |
1764 | /* Kick it. */ |
1765 | writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST); | |
1766 | /* Setup write for single bit change */ | |
436b0a58 TT |
1767 | writel(readl(drvdata->base + ECC_BLK_RDATA0_OFST) ^ 0x1, |
1768 | drvdata->base + ECC_BLK_WDATA0_OFST); | |
1769 | writel(readl(drvdata->base + ECC_BLK_RDATA1_OFST), | |
1770 | drvdata->base + ECC_BLK_WDATA1_OFST); | |
1771 | writel(readl(drvdata->base + ECC_BLK_RDATA2_OFST), | |
1772 | drvdata->base + ECC_BLK_WDATA2_OFST); | |
1773 | writel(readl(drvdata->base + ECC_BLK_RDATA3_OFST), | |
1774 | drvdata->base + ECC_BLK_WDATA3_OFST); | |
1775 | ||
064acbd4 TT |
1776 | /* Copy Read ECC to Write ECC */ |
1777 | writel(readl(drvdata->base + ECC_BLK_RECC0_OFST), | |
1778 | drvdata->base + ECC_BLK_WECC0_OFST); | |
1779 | writel(readl(drvdata->base + ECC_BLK_RECC1_OFST), | |
1780 | drvdata->base + ECC_BLK_WECC1_OFST); | |
1781 | /* Setup accctrl to write & ecc override & data override */ | |
1782 | writel(ECC_WRITE_EDOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST); | |
1783 | /* Kick it. */ | |
1784 | writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST); | |
1785 | /* Setup accctrl to read & ecc overwrite & data overwrite */ | |
1786 | writel(ECC_READ_EDOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST); | |
1787 | /* Kick it. */ | |
1788 | writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST); | |
1789 | } | |
1790 | ||
c7b4be8d TT |
1791 | /* Ensure the interrupt test bits are set */ |
1792 | wmb(); | |
1793 | local_irq_restore(flags); | |
1794 | ||
1795 | return count; | |
1796 | } | |
1797 | ||
13ab8448 | 1798 | static void altr_edac_a10_irq_handler(struct irq_desc *desc) |
588cb03e | 1799 | { |
13ab8448 TT |
1800 | int dberr, bit, sm_offset, irq_status; |
1801 | struct altr_arria10_edac *edac = irq_desc_get_handler_data(desc); | |
1802 | struct irq_chip *chip = irq_desc_get_chip(desc); | |
1803 | int irq = irq_desc_get_irq(desc); | |
8faa1cf6 | 1804 | unsigned long bits; |
13ab8448 TT |
1805 | |
1806 | dberr = (irq == edac->db_irq) ? 1 : 0; | |
1807 | sm_offset = dberr ? A10_SYSMGR_ECC_INTSTAT_DERR_OFST : | |
1808 | A10_SYSMGR_ECC_INTSTAT_SERR_OFST; | |
1809 | ||
1810 | chained_irq_enter(chip, desc); | |
588cb03e TT |
1811 | |
1812 | regmap_read(edac->ecc_mgr_map, sm_offset, &irq_status); | |
1813 | ||
8faa1cf6 | 1814 | bits = irq_status; |
eecb0681 MZ |
1815 | for_each_set_bit(bit, &bits, 32) |
1816 | generic_handle_domain_irq(edac->domain, dberr * 32 + bit); | |
588cb03e | 1817 | |
13ab8448 | 1818 | chained_irq_exit(chip, desc); |
588cb03e TT |
1819 | } |
1820 | ||
44ec9b30 TT |
1821 | static int validate_parent_available(struct device_node *np) |
1822 | { | |
1823 | struct device_node *parent; | |
1824 | int ret = 0; | |
1825 | ||
3123c5c4 TT |
1826 | /* SDRAM must be present for Linux (implied parent) */ |
1827 | if (of_device_is_compatible(np, "altr,sdram-edac-s10")) | |
1828 | return 0; | |
1829 | ||
44ec9b30 TT |
1830 | /* Ensure parent device is enabled if parent node exists */ |
1831 | parent = of_parse_phandle(np, "altr,ecc-parent", 0); | |
1832 | if (parent && !of_device_is_available(parent)) | |
1833 | ret = -ENODEV; | |
1834 | ||
1835 | of_node_put(parent); | |
1836 | return ret; | |
1837 | } | |
1838 | ||
3123c5c4 TT |
1839 | static int get_s10_sdram_edac_resource(struct device_node *np, |
1840 | struct resource *res) | |
1841 | { | |
1842 | struct device_node *parent; | |
1843 | int ret; | |
1844 | ||
1845 | parent = of_parse_phandle(np, "altr,sdr-syscon", 0); | |
1846 | if (!parent) | |
1847 | return -ENODEV; | |
1848 | ||
1849 | ret = of_address_to_resource(parent, 0, res); | |
1850 | of_node_put(parent); | |
1851 | ||
1852 | return ret; | |
1853 | } | |
1854 | ||
588cb03e TT |
1855 | static int altr_edac_a10_device_add(struct altr_arria10_edac *edac, |
1856 | struct device_node *np) | |
1857 | { | |
1858 | struct edac_device_ctl_info *dci; | |
1859 | struct altr_edac_device_dev *altdev; | |
1860 | char *ecc_name = (char *)np->name; | |
1861 | struct resource res; | |
1862 | int edac_idx; | |
1863 | int rc = 0; | |
1864 | const struct edac_device_prv_data *prv; | |
1865 | /* Get matching node and check for valid result */ | |
1866 | const struct of_device_id *pdev_id = | |
ab564cb5 | 1867 | of_match_node(altr_edac_a10_device_of_match, np); |
588cb03e TT |
1868 | if (IS_ERR_OR_NULL(pdev_id)) |
1869 | return -ENODEV; | |
1870 | ||
1871 | /* Get driver specific data for this EDAC device */ | |
1872 | prv = pdev_id->data; | |
1873 | if (IS_ERR_OR_NULL(prv)) | |
1874 | return -ENODEV; | |
1875 | ||
44ec9b30 TT |
1876 | if (validate_parent_available(np)) |
1877 | return -ENODEV; | |
1878 | ||
588cb03e TT |
1879 | if (!devres_open_group(edac->dev, altr_edac_a10_device_add, GFP_KERNEL)) |
1880 | return -ENOMEM; | |
1881 | ||
3123c5c4 TT |
1882 | if (of_device_is_compatible(np, "altr,sdram-edac-s10")) |
1883 | rc = get_s10_sdram_edac_resource(np, &res); | |
1884 | else | |
1885 | rc = of_address_to_resource(np, 0, &res); | |
1886 | ||
588cb03e TT |
1887 | if (rc < 0) { |
1888 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1889 | "%s: no resource address\n", ecc_name); | |
1890 | goto err_release_group; | |
1891 | } | |
1892 | ||
1893 | edac_idx = edac_device_alloc_index(); | |
1894 | dci = edac_device_alloc_ctl_info(sizeof(*altdev), ecc_name, | |
1895 | 1, ecc_name, 1, 0, NULL, 0, | |
1896 | edac_idx); | |
1897 | ||
1898 | if (!dci) { | |
1899 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1900 | "%s: Unable to allocate EDAC device\n", ecc_name); | |
1901 | rc = -ENOMEM; | |
1902 | goto err_release_group; | |
1903 | } | |
1904 | ||
1905 | altdev = dci->pvt_info; | |
1906 | dci->dev = edac->dev; | |
1907 | altdev->edac_dev_name = ecc_name; | |
1908 | altdev->edac_idx = edac_idx; | |
1909 | altdev->edac = edac; | |
1910 | altdev->edac_dev = dci; | |
1911 | altdev->data = prv; | |
1912 | altdev->ddev = *edac->dev; | |
1913 | dci->dev = &altdev->ddev; | |
1914 | dci->ctl_name = "Altera ECC Manager"; | |
1915 | dci->mod_name = ecc_name; | |
1916 | dci->dev_name = ecc_name; | |
1917 | ||
1918 | altdev->base = devm_ioremap_resource(edac->dev, &res); | |
1919 | if (IS_ERR(altdev->base)) { | |
1920 | rc = PTR_ERR(altdev->base); | |
1921 | goto err_release_group1; | |
1922 | } | |
1923 | ||
1924 | /* Check specific dependencies for the module */ | |
1925 | if (altdev->data->setup) { | |
1926 | rc = altdev->data->setup(altdev); | |
1927 | if (rc) | |
1928 | goto err_release_group1; | |
1929 | } | |
1930 | ||
13ab8448 TT |
1931 | altdev->sb_irq = irq_of_parse_and_map(np, 0); |
1932 | if (!altdev->sb_irq) { | |
1933 | edac_printk(KERN_ERR, EDAC_DEVICE, "Error allocating SBIRQ\n"); | |
1934 | rc = -ENODEV; | |
1935 | goto err_release_group1; | |
1936 | } | |
a29d64a4 TT |
1937 | rc = devm_request_irq(edac->dev, altdev->sb_irq, prv->ecc_irq_handler, |
1938 | IRQF_ONESHOT | IRQF_TRIGGER_HIGH, | |
1939 | ecc_name, altdev); | |
13ab8448 | 1940 | if (rc) { |
3763569f | 1941 | edac_printk(KERN_ERR, EDAC_DEVICE, "No SBERR IRQ resource\n"); |
13ab8448 TT |
1942 | goto err_release_group1; |
1943 | } | |
1944 | ||
098da961 | 1945 | #ifdef CONFIG_64BIT |
1bd76ff4 TT |
1946 | /* Use IRQ to determine SError origin instead of assigning IRQ */ |
1947 | rc = of_property_read_u32_index(np, "interrupts", 0, &altdev->db_irq); | |
1948 | if (rc) { | |
1949 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1950 | "Unable to parse DB IRQ index\n"); | |
1951 | goto err_release_group1; | |
1952 | } | |
1953 | #else | |
13ab8448 TT |
1954 | altdev->db_irq = irq_of_parse_and_map(np, 1); |
1955 | if (!altdev->db_irq) { | |
1956 | edac_printk(KERN_ERR, EDAC_DEVICE, "Error allocating DBIRQ\n"); | |
1957 | rc = -ENODEV; | |
1958 | goto err_release_group1; | |
1959 | } | |
a29d64a4 TT |
1960 | rc = devm_request_irq(edac->dev, altdev->db_irq, prv->ecc_irq_handler, |
1961 | IRQF_ONESHOT | IRQF_TRIGGER_HIGH, | |
1962 | ecc_name, altdev); | |
13ab8448 TT |
1963 | if (rc) { |
1964 | edac_printk(KERN_ERR, EDAC_DEVICE, "No DBERR IRQ resource\n"); | |
1965 | goto err_release_group1; | |
1966 | } | |
1bd76ff4 | 1967 | #endif |
13ab8448 | 1968 | |
588cb03e TT |
1969 | rc = edac_device_add_device(dci); |
1970 | if (rc) { | |
1971 | dev_err(edac->dev, "edac_device_add_device failed\n"); | |
1972 | rc = -ENOMEM; | |
1973 | goto err_release_group1; | |
1974 | } | |
1975 | ||
1976 | altr_create_edacdev_dbgfs(dci, prv); | |
1977 | ||
1978 | list_add(&altdev->next, &edac->a10_ecc_devices); | |
1979 | ||
1980 | devres_remove_group(edac->dev, altr_edac_a10_device_add); | |
1981 | ||
1982 | return 0; | |
1983 | ||
1984 | err_release_group1: | |
1985 | edac_device_free_ctl_info(dci); | |
1986 | err_release_group: | |
588cb03e TT |
1987 | devres_release_group(edac->dev, NULL); |
1988 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1989 | "%s:Error setting up EDAC device: %d\n", ecc_name, rc); | |
1990 | ||
1991 | return rc; | |
1992 | } | |
1993 | ||
13ab8448 TT |
1994 | static void a10_eccmgr_irq_mask(struct irq_data *d) |
1995 | { | |
1996 | struct altr_arria10_edac *edac = irq_data_get_irq_chip_data(d); | |
1997 | ||
1998 | regmap_write(edac->ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_SET_OFST, | |
1999 | BIT(d->hwirq)); | |
2000 | } | |
2001 | ||
2002 | static void a10_eccmgr_irq_unmask(struct irq_data *d) | |
2003 | { | |
2004 | struct altr_arria10_edac *edac = irq_data_get_irq_chip_data(d); | |
2005 | ||
2006 | regmap_write(edac->ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_CLR_OFST, | |
2007 | BIT(d->hwirq)); | |
2008 | } | |
2009 | ||
2010 | static int a10_eccmgr_irqdomain_map(struct irq_domain *d, unsigned int irq, | |
2011 | irq_hw_number_t hwirq) | |
2012 | { | |
2013 | struct altr_arria10_edac *edac = d->host_data; | |
2014 | ||
2015 | irq_set_chip_and_handler(irq, &edac->irq_chip, handle_simple_irq); | |
2016 | irq_set_chip_data(irq, edac); | |
2017 | irq_set_noprobe(irq); | |
2018 | ||
2019 | return 0; | |
2020 | } | |
2021 | ||
18caec20 | 2022 | static const struct irq_domain_ops a10_eccmgr_ic_ops = { |
13ab8448 TT |
2023 | .map = a10_eccmgr_irqdomain_map, |
2024 | .xlate = irq_domain_xlate_twocell, | |
2025 | }; | |
2026 | ||
d5fc9125 TT |
2027 | /************** Stratix 10 EDAC Double Bit Error Handler ************/ |
2028 | #define to_a10edac(p, m) container_of(p, struct altr_arria10_edac, m) | |
2029 | ||
098da961 | 2030 | #ifdef CONFIG_64BIT |
1bd76ff4 TT |
2031 | /* panic routine issues reboot on non-zero panic_timeout */ |
2032 | extern int panic_timeout; | |
2033 | ||
d5fc9125 TT |
2034 | /* |
2035 | * The double bit error is handled through SError which is fatal. This is | |
2036 | * called as a panic notifier to printout ECC error info as part of the panic. | |
2037 | */ | |
2038 | static int s10_edac_dberr_handler(struct notifier_block *this, | |
2039 | unsigned long event, void *ptr) | |
2040 | { | |
2041 | struct altr_arria10_edac *edac = to_a10edac(this, panic_notifier); | |
2042 | int err_addr, dberror; | |
2043 | ||
2044 | regmap_read(edac->ecc_mgr_map, S10_SYSMGR_ECC_INTSTAT_DERR_OFST, | |
2045 | &dberror); | |
2046 | regmap_write(edac->ecc_mgr_map, S10_SYSMGR_UE_VAL_OFST, dberror); | |
1bd76ff4 TT |
2047 | if (dberror & S10_DBE_IRQ_MASK) { |
2048 | struct list_head *position; | |
2049 | struct altr_edac_device_dev *ed; | |
2050 | struct arm_smccc_res result; | |
2051 | ||
2052 | /* Find the matching DBE in the list of devices */ | |
2053 | list_for_each(position, &edac->a10_ecc_devices) { | |
2054 | ed = list_entry(position, struct altr_edac_device_dev, | |
2055 | next); | |
2056 | if (!(BIT(ed->db_irq) & dberror)) | |
2057 | continue; | |
2058 | ||
2059 | writel(ALTR_A10_ECC_DERRPENA, | |
2060 | ed->base + ALTR_A10_ECC_INTSTAT_OFST); | |
2061 | err_addr = readl(ed->base + ALTR_S10_DERR_ADDRA_OFST); | |
2062 | regmap_write(edac->ecc_mgr_map, | |
2063 | S10_SYSMGR_UE_ADDR_OFST, err_addr); | |
2064 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
2065 | "EDAC: [Fatal DBE on %s @ 0x%08X]\n", | |
2066 | ed->edac_dev_name, err_addr); | |
2067 | break; | |
2068 | } | |
2069 | /* Notify the System through SMC. Reboot delay = 1 second */ | |
2070 | panic_timeout = 1; | |
2071 | arm_smccc_smc(INTEL_SIP_SMC_ECC_DBE, dberror, 0, 0, 0, 0, | |
2072 | 0, 0, &result); | |
d5fc9125 TT |
2073 | } |
2074 | ||
2075 | return NOTIFY_DONE; | |
2076 | } | |
1bd76ff4 | 2077 | #endif |
d5fc9125 TT |
2078 | |
2079 | /****************** Arria 10 EDAC Probe Function *********************/ | |
588cb03e TT |
2080 | static int altr_edac_a10_probe(struct platform_device *pdev) |
2081 | { | |
2082 | struct altr_arria10_edac *edac; | |
2083 | struct device_node *child; | |
588cb03e TT |
2084 | |
2085 | edac = devm_kzalloc(&pdev->dev, sizeof(*edac), GFP_KERNEL); | |
2086 | if (!edac) | |
2087 | return -ENOMEM; | |
2088 | ||
2089 | edac->dev = &pdev->dev; | |
2090 | platform_set_drvdata(pdev, edac); | |
2091 | INIT_LIST_HEAD(&edac->a10_ecc_devices); | |
2092 | ||
5781823f TT |
2093 | edac->ecc_mgr_map = |
2094 | altr_sysmgr_regmap_lookup_by_phandle(pdev->dev.of_node, | |
2095 | "altr,sysmgr-syscon"); | |
d5fc9125 | 2096 | |
588cb03e TT |
2097 | if (IS_ERR(edac->ecc_mgr_map)) { |
2098 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
2099 | "Unable to get syscon altr,sysmgr-syscon\n"); | |
2100 | return PTR_ERR(edac->ecc_mgr_map); | |
2101 | } | |
2102 | ||
13ab8448 TT |
2103 | edac->irq_chip.name = pdev->dev.of_node->name; |
2104 | edac->irq_chip.irq_mask = a10_eccmgr_irq_mask; | |
2105 | edac->irq_chip.irq_unmask = a10_eccmgr_irq_unmask; | |
2106 | edac->domain = irq_domain_add_linear(pdev->dev.of_node, 64, | |
2107 | &a10_eccmgr_ic_ops, edac); | |
2108 | if (!edac->domain) { | |
2109 | dev_err(&pdev->dev, "Error adding IRQ domain\n"); | |
2110 | return -ENOMEM; | |
2111 | } | |
2112 | ||
588cb03e | 2113 | edac->sb_irq = platform_get_irq(pdev, 0); |
13ab8448 TT |
2114 | if (edac->sb_irq < 0) { |
2115 | dev_err(&pdev->dev, "No SBERR IRQ resource\n"); | |
2116 | return edac->sb_irq; | |
588cb03e TT |
2117 | } |
2118 | ||
13ab8448 TT |
2119 | irq_set_chained_handler_and_data(edac->sb_irq, |
2120 | altr_edac_a10_irq_handler, | |
2121 | edac); | |
2122 | ||
098da961 | 2123 | #ifdef CONFIG_64BIT |
1bd76ff4 | 2124 | { |
d5fc9125 TT |
2125 | int dberror, err_addr; |
2126 | ||
2127 | edac->panic_notifier.notifier_call = s10_edac_dberr_handler; | |
2128 | atomic_notifier_chain_register(&panic_notifier_list, | |
2129 | &edac->panic_notifier); | |
2130 | ||
2131 | /* Printout a message if uncorrectable error previously. */ | |
2132 | regmap_read(edac->ecc_mgr_map, S10_SYSMGR_UE_VAL_OFST, | |
2133 | &dberror); | |
2134 | if (dberror) { | |
2135 | regmap_read(edac->ecc_mgr_map, S10_SYSMGR_UE_ADDR_OFST, | |
2136 | &err_addr); | |
2137 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
2138 | "Previous Boot UE detected[0x%X] @ 0x%X\n", | |
2139 | dberror, err_addr); | |
2140 | /* Reset the sticky registers */ | |
2141 | regmap_write(edac->ecc_mgr_map, | |
2142 | S10_SYSMGR_UE_VAL_OFST, 0); | |
2143 | regmap_write(edac->ecc_mgr_map, | |
2144 | S10_SYSMGR_UE_ADDR_OFST, 0); | |
2145 | } | |
588cb03e | 2146 | } |
1bd76ff4 TT |
2147 | #else |
2148 | edac->db_irq = platform_get_irq(pdev, 1); | |
2149 | if (edac->db_irq < 0) { | |
2150 | dev_err(&pdev->dev, "No DBERR IRQ resource\n"); | |
2151 | return edac->db_irq; | |
2152 | } | |
2153 | irq_set_chained_handler_and_data(edac->db_irq, | |
2154 | altr_edac_a10_irq_handler, edac); | |
2155 | #endif | |
588cb03e TT |
2156 | |
2157 | for_each_child_of_node(pdev->dev.of_node, child) { | |
2158 | if (!of_device_is_available(child)) | |
2159 | continue; | |
c6882fb2 | 2160 | |
08a260d9 | 2161 | if (of_match_node(altr_edac_a10_device_of_match, child)) |
c7b4be8d | 2162 | altr_edac_a10_device_add(edac, child); |
c6882fb2 | 2163 | |
580b5cf5 | 2164 | #ifdef CONFIG_EDAC_ALTERA_SDRAM |
3123c5c4 | 2165 | else if (of_device_is_compatible(child, "altr,sdram-edac-a10")) |
ab564cb5 TT |
2166 | of_platform_populate(pdev->dev.of_node, |
2167 | altr_sdram_ctrl_of_match, | |
2168 | NULL, &pdev->dev); | |
580b5cf5 | 2169 | #endif |
588cb03e TT |
2170 | } |
2171 | ||
2172 | return 0; | |
2173 | } | |
2174 | ||
2175 | static const struct of_device_id altr_edac_a10_of_match[] = { | |
2176 | { .compatible = "altr,socfpga-a10-ecc-manager" }, | |
d5fc9125 | 2177 | { .compatible = "altr,socfpga-s10-ecc-manager" }, |
588cb03e TT |
2178 | {}, |
2179 | }; | |
2180 | MODULE_DEVICE_TABLE(of, altr_edac_a10_of_match); | |
2181 | ||
2182 | static struct platform_driver altr_edac_a10_driver = { | |
2183 | .probe = altr_edac_a10_probe, | |
2184 | .driver = { | |
2185 | .name = "socfpga_a10_ecc_manager", | |
2186 | .of_match_table = altr_edac_a10_of_match, | |
2187 | }, | |
2188 | }; | |
2189 | module_platform_driver(altr_edac_a10_driver); | |
2190 | ||
71bcada8 TT |
2191 | MODULE_LICENSE("GPL v2"); |
2192 | MODULE_AUTHOR("Thor Thayer"); | |
c3eea194 | 2193 | MODULE_DESCRIPTION("EDAC Driver for Altera Memories"); |