Commit | Line | Data |
---|---|---|
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> |
c3eea194 | 12 | #include <linux/genalloc.h> |
71bcada8 | 13 | #include <linux/interrupt.h> |
13ab8448 | 14 | #include <linux/irqchip/chained_irq.h> |
71bcada8 TT |
15 | #include <linux/kernel.h> |
16 | #include <linux/mfd/syscon.h> | |
e9918d7f | 17 | #include <linux/notifier.h> |
588cb03e | 18 | #include <linux/of_address.h> |
13ab8448 | 19 | #include <linux/of_irq.h> |
71bcada8 TT |
20 | #include <linux/of_platform.h> |
21 | #include <linux/platform_device.h> | |
22 | #include <linux/regmap.h> | |
23 | #include <linux/types.h> | |
24 | #include <linux/uaccess.h> | |
25 | ||
143f4a5a | 26 | #include "altera_edac.h" |
71bcada8 TT |
27 | #include "edac_module.h" |
28 | ||
29 | #define EDAC_MOD_STR "altera_edac" | |
c3eea194 | 30 | #define EDAC_DEVICE "Altera" |
71bcada8 | 31 | |
143f4a5a TT |
32 | static const struct altr_sdram_prv_data c5_data = { |
33 | .ecc_ctrl_offset = CV_CTLCFG_OFST, | |
34 | .ecc_ctl_en_mask = CV_CTLCFG_ECC_AUTO_EN, | |
35 | .ecc_stat_offset = CV_DRAMSTS_OFST, | |
36 | .ecc_stat_ce_mask = CV_DRAMSTS_SBEERR, | |
37 | .ecc_stat_ue_mask = CV_DRAMSTS_DBEERR, | |
38 | .ecc_saddr_offset = CV_ERRADDR_OFST, | |
73bcc942 | 39 | .ecc_daddr_offset = CV_ERRADDR_OFST, |
143f4a5a TT |
40 | .ecc_cecnt_offset = CV_SBECOUNT_OFST, |
41 | .ecc_uecnt_offset = CV_DBECOUNT_OFST, | |
42 | .ecc_irq_en_offset = CV_DRAMINTR_OFST, | |
43 | .ecc_irq_en_mask = CV_DRAMINTR_INTREN, | |
44 | .ecc_irq_clr_offset = CV_DRAMINTR_OFST, | |
45 | .ecc_irq_clr_mask = (CV_DRAMINTR_INTRCLR | CV_DRAMINTR_INTREN), | |
46 | .ecc_cnt_rst_offset = CV_DRAMINTR_OFST, | |
47 | .ecc_cnt_rst_mask = CV_DRAMINTR_INTRCLR, | |
143f4a5a TT |
48 | .ce_ue_trgr_offset = CV_CTLCFG_OFST, |
49 | .ce_set_mask = CV_CTLCFG_GEN_SB_ERR, | |
50 | .ue_set_mask = CV_CTLCFG_GEN_DB_ERR, | |
71bcada8 TT |
51 | }; |
52 | ||
73bcc942 TT |
53 | static const struct altr_sdram_prv_data a10_data = { |
54 | .ecc_ctrl_offset = A10_ECCCTRL1_OFST, | |
55 | .ecc_ctl_en_mask = A10_ECCCTRL1_ECC_EN, | |
56 | .ecc_stat_offset = A10_INTSTAT_OFST, | |
57 | .ecc_stat_ce_mask = A10_INTSTAT_SBEERR, | |
58 | .ecc_stat_ue_mask = A10_INTSTAT_DBEERR, | |
59 | .ecc_saddr_offset = A10_SERRADDR_OFST, | |
60 | .ecc_daddr_offset = A10_DERRADDR_OFST, | |
61 | .ecc_irq_en_offset = A10_ERRINTEN_OFST, | |
62 | .ecc_irq_en_mask = A10_ECC_IRQ_EN_MASK, | |
63 | .ecc_irq_clr_offset = A10_INTSTAT_OFST, | |
64 | .ecc_irq_clr_mask = (A10_INTSTAT_SBEERR | A10_INTSTAT_DBEERR), | |
65 | .ecc_cnt_rst_offset = A10_ECCCTRL1_OFST, | |
66 | .ecc_cnt_rst_mask = A10_ECC_CNT_RESET_MASK, | |
73bcc942 TT |
67 | .ce_ue_trgr_offset = A10_DIAGINTTEST_OFST, |
68 | .ce_set_mask = A10_DIAGINT_TSERRA_MASK, | |
69 | .ue_set_mask = A10_DIAGINT_TDERRA_MASK, | |
73bcc942 TT |
70 | }; |
71 | ||
c3eea194 TT |
72 | /*********************** EDAC Memory Controller Functions ****************/ |
73 | ||
74 | /* The SDRAM controller uses the EDAC Memory Controller framework. */ | |
75 | ||
71bcada8 TT |
76 | static irqreturn_t altr_sdram_mc_err_handler(int irq, void *dev_id) |
77 | { | |
78 | struct mem_ctl_info *mci = dev_id; | |
79 | struct altr_sdram_mc_data *drvdata = mci->pvt_info; | |
143f4a5a | 80 | const struct altr_sdram_prv_data *priv = drvdata->data; |
73bcc942 | 81 | u32 status, err_count = 1, err_addr; |
71bcada8 | 82 | |
143f4a5a | 83 | regmap_read(drvdata->mc_vbase, priv->ecc_stat_offset, &status); |
71bcada8 | 84 | |
143f4a5a | 85 | if (status & priv->ecc_stat_ue_mask) { |
73bcc942 TT |
86 | regmap_read(drvdata->mc_vbase, priv->ecc_daddr_offset, |
87 | &err_addr); | |
88 | if (priv->ecc_uecnt_offset) | |
89 | regmap_read(drvdata->mc_vbase, priv->ecc_uecnt_offset, | |
90 | &err_count); | |
71bcada8 TT |
91 | panic("\nEDAC: [%d Uncorrectable errors @ 0x%08X]\n", |
92 | err_count, err_addr); | |
93 | } | |
143f4a5a | 94 | if (status & priv->ecc_stat_ce_mask) { |
73bcc942 TT |
95 | regmap_read(drvdata->mc_vbase, priv->ecc_saddr_offset, |
96 | &err_addr); | |
97 | if (priv->ecc_uecnt_offset) | |
98 | regmap_read(drvdata->mc_vbase, priv->ecc_cecnt_offset, | |
99 | &err_count); | |
71bcada8 TT |
100 | edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, err_count, |
101 | err_addr >> PAGE_SHIFT, | |
102 | err_addr & ~PAGE_MASK, 0, | |
103 | 0, 0, -1, mci->ctl_name, ""); | |
73bcc942 TT |
104 | /* Clear IRQ to resume */ |
105 | regmap_write(drvdata->mc_vbase, priv->ecc_irq_clr_offset, | |
106 | priv->ecc_irq_clr_mask); | |
71bcada8 | 107 | |
73bcc942 TT |
108 | return IRQ_HANDLED; |
109 | } | |
110 | return IRQ_NONE; | |
71bcada8 TT |
111 | } |
112 | ||
71bcada8 TT |
113 | static ssize_t altr_sdr_mc_err_inject_write(struct file *file, |
114 | const char __user *data, | |
115 | size_t count, loff_t *ppos) | |
116 | { | |
117 | struct mem_ctl_info *mci = file->private_data; | |
118 | struct altr_sdram_mc_data *drvdata = mci->pvt_info; | |
143f4a5a | 119 | const struct altr_sdram_prv_data *priv = drvdata->data; |
71bcada8 TT |
120 | u32 *ptemp; |
121 | dma_addr_t dma_handle; | |
122 | u32 reg, read_reg; | |
123 | ||
124 | ptemp = dma_alloc_coherent(mci->pdev, 16, &dma_handle, GFP_KERNEL); | |
125 | if (!ptemp) { | |
126 | dma_free_coherent(mci->pdev, 16, ptemp, dma_handle); | |
127 | edac_printk(KERN_ERR, EDAC_MC, | |
128 | "Inject: Buffer Allocation error\n"); | |
129 | return -ENOMEM; | |
130 | } | |
131 | ||
143f4a5a TT |
132 | regmap_read(drvdata->mc_vbase, priv->ce_ue_trgr_offset, |
133 | &read_reg); | |
134 | read_reg &= ~(priv->ce_set_mask | priv->ue_set_mask); | |
71bcada8 TT |
135 | |
136 | /* Error are injected by writing a word while the SBE or DBE | |
137 | * bit in the CTLCFG register is set. Reading the word will | |
138 | * trigger the SBE or DBE error and the corresponding IRQ. | |
139 | */ | |
140 | if (count == 3) { | |
141 | edac_printk(KERN_ALERT, EDAC_MC, | |
142 | "Inject Double bit error\n"); | |
90e493d7 | 143 | local_irq_disable(); |
143f4a5a TT |
144 | regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset, |
145 | (read_reg | priv->ue_set_mask)); | |
90e493d7 | 146 | local_irq_enable(); |
71bcada8 TT |
147 | } else { |
148 | edac_printk(KERN_ALERT, EDAC_MC, | |
149 | "Inject Single bit error\n"); | |
90e493d7 | 150 | local_irq_disable(); |
143f4a5a TT |
151 | regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset, |
152 | (read_reg | priv->ce_set_mask)); | |
90e493d7 | 153 | local_irq_enable(); |
71bcada8 TT |
154 | } |
155 | ||
156 | ptemp[0] = 0x5A5A5A5A; | |
157 | ptemp[1] = 0xA5A5A5A5; | |
158 | ||
159 | /* Clear the error injection bits */ | |
143f4a5a | 160 | regmap_write(drvdata->mc_vbase, priv->ce_ue_trgr_offset, read_reg); |
71bcada8 TT |
161 | /* Ensure it has been written out */ |
162 | wmb(); | |
163 | ||
164 | /* | |
165 | * To trigger the error, we need to read the data back | |
166 | * (the data was written with errors above). | |
332efa63 | 167 | * The READ_ONCE macros and printk are used to prevent the |
71bcada8 TT |
168 | * the compiler optimizing these reads out. |
169 | */ | |
332efa63 MR |
170 | reg = READ_ONCE(ptemp[0]); |
171 | read_reg = READ_ONCE(ptemp[1]); | |
71bcada8 TT |
172 | /* Force Read */ |
173 | rmb(); | |
174 | ||
175 | edac_printk(KERN_ALERT, EDAC_MC, "Read Data [0x%X, 0x%X]\n", | |
176 | reg, read_reg); | |
177 | ||
178 | dma_free_coherent(mci->pdev, 16, ptemp, dma_handle); | |
179 | ||
180 | return count; | |
181 | } | |
182 | ||
183 | static const struct file_operations altr_sdr_mc_debug_inject_fops = { | |
184 | .open = simple_open, | |
185 | .write = altr_sdr_mc_err_inject_write, | |
186 | .llseek = generic_file_llseek, | |
187 | }; | |
188 | ||
189 | static void altr_sdr_mc_create_debugfs_nodes(struct mem_ctl_info *mci) | |
190 | { | |
bba3b31e BP |
191 | if (!IS_ENABLED(CONFIG_EDAC_DEBUG)) |
192 | return; | |
193 | ||
194 | if (!mci->debugfs) | |
195 | return; | |
196 | ||
b8978bad | 197 | edac_debugfs_create_file("altr_trigger", S_IWUSR, mci->debugfs, mci, |
bba3b31e | 198 | &altr_sdr_mc_debug_inject_fops); |
71bcada8 | 199 | } |
71bcada8 | 200 | |
f9ae487e TT |
201 | /* Get total memory size from Open Firmware DTB */ |
202 | static unsigned long get_total_mem(void) | |
71bcada8 | 203 | { |
f9ae487e | 204 | struct device_node *np = NULL; |
ff0abed4 CP |
205 | struct resource res; |
206 | int ret; | |
207 | unsigned long total_mem = 0; | |
f9ae487e TT |
208 | |
209 | for_each_node_by_type(np, "memory") { | |
ff0abed4 CP |
210 | ret = of_address_to_resource(np, 0, &res); |
211 | if (ret) | |
212 | continue; | |
213 | ||
214 | total_mem += resource_size(&res); | |
f9ae487e TT |
215 | } |
216 | edac_dbg(0, "total_mem 0x%lx\n", total_mem); | |
217 | return total_mem; | |
71bcada8 TT |
218 | } |
219 | ||
143f4a5a | 220 | static const struct of_device_id altr_sdram_ctrl_of_match[] = { |
2c911f6c AB |
221 | { .compatible = "altr,sdram-edac", .data = &c5_data}, |
222 | { .compatible = "altr,sdram-edac-a10", .data = &a10_data}, | |
08f08bfb | 223 | { .compatible = "altr,sdram-edac-s10", .data = &a10_data}, |
143f4a5a TT |
224 | {}, |
225 | }; | |
226 | MODULE_DEVICE_TABLE(of, altr_sdram_ctrl_of_match); | |
227 | ||
73bcc942 TT |
228 | static int a10_init(struct regmap *mc_vbase) |
229 | { | |
230 | if (regmap_update_bits(mc_vbase, A10_INTMODE_OFST, | |
231 | A10_INTMODE_SB_INT, A10_INTMODE_SB_INT)) { | |
232 | edac_printk(KERN_ERR, EDAC_MC, | |
233 | "Error setting SB IRQ mode\n"); | |
234 | return -ENODEV; | |
235 | } | |
236 | ||
237 | if (regmap_write(mc_vbase, A10_SERRCNTREG_OFST, 1)) { | |
238 | edac_printk(KERN_ERR, EDAC_MC, | |
239 | "Error setting trigger count\n"); | |
240 | return -ENODEV; | |
241 | } | |
242 | ||
243 | return 0; | |
244 | } | |
245 | ||
246 | static int a10_unmask_irq(struct platform_device *pdev, u32 mask) | |
247 | { | |
248 | void __iomem *sm_base; | |
249 | int ret = 0; | |
250 | ||
251 | if (!request_mem_region(A10_SYMAN_INTMASK_CLR, sizeof(u32), | |
252 | dev_name(&pdev->dev))) { | |
253 | edac_printk(KERN_ERR, EDAC_MC, | |
254 | "Unable to request mem region\n"); | |
255 | return -EBUSY; | |
256 | } | |
257 | ||
258 | sm_base = ioremap(A10_SYMAN_INTMASK_CLR, sizeof(u32)); | |
259 | if (!sm_base) { | |
260 | edac_printk(KERN_ERR, EDAC_MC, | |
261 | "Unable to ioremap device\n"); | |
262 | ||
263 | ret = -ENOMEM; | |
264 | goto release; | |
265 | } | |
266 | ||
267 | iowrite32(mask, sm_base); | |
268 | ||
269 | iounmap(sm_base); | |
270 | ||
271 | release: | |
272 | release_mem_region(A10_SYMAN_INTMASK_CLR, sizeof(u32)); | |
273 | ||
274 | return ret; | |
275 | } | |
276 | ||
08f08bfb | 277 | static int socfpga_is_a10(void); |
71bcada8 TT |
278 | static int altr_sdram_probe(struct platform_device *pdev) |
279 | { | |
143f4a5a | 280 | const struct of_device_id *id; |
71bcada8 TT |
281 | struct edac_mc_layer layers[2]; |
282 | struct mem_ctl_info *mci; | |
283 | struct altr_sdram_mc_data *drvdata; | |
143f4a5a | 284 | const struct altr_sdram_prv_data *priv; |
71bcada8 TT |
285 | struct regmap *mc_vbase; |
286 | struct dimm_info *dimm; | |
143f4a5a | 287 | u32 read_reg; |
73bcc942 TT |
288 | int irq, irq2, res = 0; |
289 | unsigned long mem_size, irqflags = 0; | |
143f4a5a TT |
290 | |
291 | id = of_match_device(altr_sdram_ctrl_of_match, &pdev->dev); | |
292 | if (!id) | |
293 | return -ENODEV; | |
71bcada8 | 294 | |
71bcada8 TT |
295 | /* Grab the register range from the sdr controller in device tree */ |
296 | mc_vbase = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, | |
297 | "altr,sdr-syscon"); | |
298 | if (IS_ERR(mc_vbase)) { | |
299 | edac_printk(KERN_ERR, EDAC_MC, | |
300 | "regmap for altr,sdr-syscon lookup failed.\n"); | |
301 | return -ENODEV; | |
302 | } | |
303 | ||
143f4a5a TT |
304 | /* Check specific dependencies for the module */ |
305 | priv = of_match_node(altr_sdram_ctrl_of_match, | |
306 | pdev->dev.of_node)->data; | |
307 | ||
308 | /* Validate the SDRAM controller has ECC enabled */ | |
309 | if (regmap_read(mc_vbase, priv->ecc_ctrl_offset, &read_reg) || | |
310 | ((read_reg & priv->ecc_ctl_en_mask) != priv->ecc_ctl_en_mask)) { | |
71bcada8 TT |
311 | edac_printk(KERN_ERR, EDAC_MC, |
312 | "No ECC/ECC disabled [0x%08X]\n", read_reg); | |
313 | return -ENODEV; | |
314 | } | |
315 | ||
316 | /* Grab memory size from device tree. */ | |
f9ae487e | 317 | mem_size = get_total_mem(); |
71bcada8 | 318 | if (!mem_size) { |
f9ae487e | 319 | edac_printk(KERN_ERR, EDAC_MC, "Unable to calculate memory size\n"); |
71bcada8 TT |
320 | return -ENODEV; |
321 | } | |
322 | ||
143f4a5a TT |
323 | /* Ensure the SDRAM Interrupt is disabled */ |
324 | if (regmap_update_bits(mc_vbase, priv->ecc_irq_en_offset, | |
325 | priv->ecc_irq_en_mask, 0)) { | |
326 | edac_printk(KERN_ERR, EDAC_MC, | |
327 | "Error disabling SDRAM ECC IRQ\n"); | |
328 | return -ENODEV; | |
329 | } | |
330 | ||
331 | /* Toggle to clear the SDRAM Error count */ | |
332 | if (regmap_update_bits(mc_vbase, priv->ecc_cnt_rst_offset, | |
333 | priv->ecc_cnt_rst_mask, | |
334 | priv->ecc_cnt_rst_mask)) { | |
335 | edac_printk(KERN_ERR, EDAC_MC, | |
336 | "Error clearing SDRAM ECC count\n"); | |
337 | return -ENODEV; | |
338 | } | |
339 | ||
340 | if (regmap_update_bits(mc_vbase, priv->ecc_cnt_rst_offset, | |
341 | priv->ecc_cnt_rst_mask, 0)) { | |
71bcada8 | 342 | edac_printk(KERN_ERR, EDAC_MC, |
143f4a5a | 343 | "Error clearing SDRAM ECC count\n"); |
71bcada8 TT |
344 | return -ENODEV; |
345 | } | |
346 | ||
347 | irq = platform_get_irq(pdev, 0); | |
348 | if (irq < 0) { | |
349 | edac_printk(KERN_ERR, EDAC_MC, | |
350 | "No irq %d in DT\n", irq); | |
351 | return -ENODEV; | |
352 | } | |
353 | ||
73bcc942 TT |
354 | /* Arria10 has a 2nd IRQ */ |
355 | irq2 = platform_get_irq(pdev, 1); | |
356 | ||
71bcada8 TT |
357 | layers[0].type = EDAC_MC_LAYER_CHIP_SELECT; |
358 | layers[0].size = 1; | |
359 | layers[0].is_virt_csrow = true; | |
360 | layers[1].type = EDAC_MC_LAYER_CHANNEL; | |
361 | layers[1].size = 1; | |
362 | layers[1].is_virt_csrow = false; | |
363 | mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers, | |
364 | sizeof(struct altr_sdram_mc_data)); | |
365 | if (!mci) | |
366 | return -ENOMEM; | |
367 | ||
368 | mci->pdev = &pdev->dev; | |
369 | drvdata = mci->pvt_info; | |
370 | drvdata->mc_vbase = mc_vbase; | |
143f4a5a | 371 | drvdata->data = priv; |
71bcada8 TT |
372 | platform_set_drvdata(pdev, mci); |
373 | ||
374 | if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) { | |
143f4a5a TT |
375 | edac_printk(KERN_ERR, EDAC_MC, |
376 | "Unable to get managed device resource\n"); | |
71bcada8 TT |
377 | res = -ENOMEM; |
378 | goto free; | |
379 | } | |
380 | ||
381 | mci->mtype_cap = MEM_FLAG_DDR3; | |
382 | mci->edac_ctl_cap = EDAC_FLAG_NONE | EDAC_FLAG_SECDED; | |
383 | mci->edac_cap = EDAC_FLAG_SECDED; | |
384 | mci->mod_name = EDAC_MOD_STR; | |
71bcada8 TT |
385 | mci->ctl_name = dev_name(&pdev->dev); |
386 | mci->scrub_mode = SCRUB_SW_SRC; | |
387 | mci->dev_name = dev_name(&pdev->dev); | |
388 | ||
389 | dimm = *mci->dimms; | |
390 | dimm->nr_pages = ((mem_size - 1) >> PAGE_SHIFT) + 1; | |
391 | dimm->grain = 8; | |
392 | dimm->dtype = DEV_X8; | |
393 | dimm->mtype = MEM_DDR3; | |
394 | dimm->edac_mode = EDAC_SECDED; | |
395 | ||
396 | res = edac_mc_add_mc(mci); | |
397 | if (res < 0) | |
398 | goto err; | |
399 | ||
73bcc942 | 400 | /* Only the Arria10 has separate IRQs */ |
08f08bfb | 401 | if (socfpga_is_a10()) { |
73bcc942 TT |
402 | /* Arria10 specific initialization */ |
403 | res = a10_init(mc_vbase); | |
404 | if (res < 0) | |
405 | goto err2; | |
406 | ||
407 | res = devm_request_irq(&pdev->dev, irq2, | |
408 | altr_sdram_mc_err_handler, | |
409 | IRQF_SHARED, dev_name(&pdev->dev), mci); | |
410 | if (res < 0) { | |
411 | edac_mc_printk(mci, KERN_ERR, | |
412 | "Unable to request irq %d\n", irq2); | |
413 | res = -ENODEV; | |
414 | goto err2; | |
415 | } | |
416 | ||
417 | res = a10_unmask_irq(pdev, A10_DDR0_IRQ_MASK); | |
418 | if (res < 0) | |
419 | goto err2; | |
420 | ||
421 | irqflags = IRQF_SHARED; | |
422 | } | |
423 | ||
71bcada8 | 424 | res = devm_request_irq(&pdev->dev, irq, altr_sdram_mc_err_handler, |
73bcc942 | 425 | irqflags, dev_name(&pdev->dev), mci); |
71bcada8 TT |
426 | if (res < 0) { |
427 | edac_mc_printk(mci, KERN_ERR, | |
428 | "Unable to request irq %d\n", irq); | |
429 | res = -ENODEV; | |
430 | goto err2; | |
431 | } | |
432 | ||
143f4a5a TT |
433 | /* Infrastructure ready - enable the IRQ */ |
434 | if (regmap_update_bits(drvdata->mc_vbase, priv->ecc_irq_en_offset, | |
435 | priv->ecc_irq_en_mask, priv->ecc_irq_en_mask)) { | |
71bcada8 TT |
436 | edac_mc_printk(mci, KERN_ERR, |
437 | "Error enabling SDRAM ECC IRQ\n"); | |
438 | res = -ENODEV; | |
439 | goto err2; | |
440 | } | |
441 | ||
442 | altr_sdr_mc_create_debugfs_nodes(mci); | |
443 | ||
444 | devres_close_group(&pdev->dev, NULL); | |
445 | ||
446 | return 0; | |
447 | ||
448 | err2: | |
449 | edac_mc_del_mc(&pdev->dev); | |
450 | err: | |
451 | devres_release_group(&pdev->dev, NULL); | |
452 | free: | |
453 | edac_mc_free(mci); | |
454 | edac_printk(KERN_ERR, EDAC_MC, | |
455 | "EDAC Probe Failed; Error %d\n", res); | |
456 | ||
457 | return res; | |
458 | } | |
459 | ||
460 | static int altr_sdram_remove(struct platform_device *pdev) | |
461 | { | |
462 | struct mem_ctl_info *mci = platform_get_drvdata(pdev); | |
463 | ||
464 | edac_mc_del_mc(&pdev->dev); | |
465 | edac_mc_free(mci); | |
466 | platform_set_drvdata(pdev, NULL); | |
467 | ||
468 | return 0; | |
469 | } | |
470 | ||
3dab6bd5 TT |
471 | /**************** Stratix 10 EDAC Memory Controller Functions ************/ |
472 | ||
473 | /** | |
474 | * s10_protected_reg_write | |
475 | * Write to a protected SMC register. | |
476 | * @context: Not used. | |
477 | * @reg: Address of register | |
478 | * @value: Value to write | |
479 | * Return: INTEL_SIP_SMC_STATUS_OK (0) on success | |
480 | * INTEL_SIP_SMC_REG_ERROR on error | |
481 | * INTEL_SIP_SMC_RETURN_UNKNOWN_FUNCTION if not supported | |
482 | */ | |
483 | static int s10_protected_reg_write(void *context, unsigned int reg, | |
484 | unsigned int val) | |
485 | { | |
486 | struct arm_smccc_res result; | |
08f08bfb | 487 | unsigned long offset = (unsigned long)context; |
3dab6bd5 | 488 | |
08f08bfb | 489 | arm_smccc_smc(INTEL_SIP_SMC_REG_WRITE, offset + reg, val, 0, 0, |
3dab6bd5 TT |
490 | 0, 0, 0, &result); |
491 | ||
492 | return (int)result.a0; | |
493 | } | |
494 | ||
495 | /** | |
496 | * s10_protected_reg_read | |
497 | * Read the status of a protected SMC register | |
498 | * @context: Not used. | |
499 | * @reg: Address of register | |
500 | * @value: Value read. | |
501 | * Return: INTEL_SIP_SMC_STATUS_OK (0) on success | |
502 | * INTEL_SIP_SMC_REG_ERROR on error | |
503 | * INTEL_SIP_SMC_RETURN_UNKNOWN_FUNCTION if not supported | |
504 | */ | |
505 | static int s10_protected_reg_read(void *context, unsigned int reg, | |
506 | unsigned int *val) | |
507 | { | |
508 | struct arm_smccc_res result; | |
08f08bfb | 509 | unsigned long offset = (unsigned long)context; |
3dab6bd5 | 510 | |
08f08bfb | 511 | arm_smccc_smc(INTEL_SIP_SMC_REG_READ, offset + reg, 0, 0, 0, |
3dab6bd5 TT |
512 | 0, 0, 0, &result); |
513 | ||
514 | *val = (unsigned int)result.a1; | |
515 | ||
516 | return (int)result.a0; | |
517 | } | |
518 | ||
3dab6bd5 TT |
519 | static const struct regmap_config s10_sdram_regmap_cfg = { |
520 | .name = "s10_ddr", | |
521 | .reg_bits = 32, | |
522 | .reg_stride = 4, | |
523 | .val_bits = 32, | |
08f08bfb | 524 | .max_register = 0xffd12228, |
3dab6bd5 TT |
525 | .reg_read = s10_protected_reg_read, |
526 | .reg_write = s10_protected_reg_write, | |
1c96a2f6 DF |
527 | .use_single_read = true, |
528 | .use_single_write = true, | |
3dab6bd5 TT |
529 | }; |
530 | ||
3dab6bd5 TT |
531 | /************** </Stratix10 EDAC Memory Controller Functions> ***********/ |
532 | ||
6f2b6422 AT |
533 | /* |
534 | * If you want to suspend, need to disable EDAC by removing it | |
535 | * from the device tree or defconfig. | |
536 | */ | |
537 | #ifdef CONFIG_PM | |
538 | static int altr_sdram_prepare(struct device *dev) | |
539 | { | |
540 | pr_err("Suspend not allowed when EDAC is enabled.\n"); | |
541 | ||
542 | return -EPERM; | |
543 | } | |
544 | ||
545 | static const struct dev_pm_ops altr_sdram_pm_ops = { | |
546 | .prepare = altr_sdram_prepare, | |
547 | }; | |
548 | #endif | |
549 | ||
71bcada8 TT |
550 | static struct platform_driver altr_sdram_edac_driver = { |
551 | .probe = altr_sdram_probe, | |
552 | .remove = altr_sdram_remove, | |
553 | .driver = { | |
554 | .name = "altr_sdram_edac", | |
6f2b6422 AT |
555 | #ifdef CONFIG_PM |
556 | .pm = &altr_sdram_pm_ops, | |
557 | #endif | |
71bcada8 TT |
558 | .of_match_table = altr_sdram_ctrl_of_match, |
559 | }, | |
560 | }; | |
561 | ||
562 | module_platform_driver(altr_sdram_edac_driver); | |
563 | ||
c3eea194 TT |
564 | /************************* EDAC Parent Probe *************************/ |
565 | ||
566 | static const struct of_device_id altr_edac_device_of_match[]; | |
567 | ||
568 | static const struct of_device_id altr_edac_of_match[] = { | |
569 | { .compatible = "altr,socfpga-ecc-manager" }, | |
570 | {}, | |
571 | }; | |
572 | MODULE_DEVICE_TABLE(of, altr_edac_of_match); | |
573 | ||
574 | static int altr_edac_probe(struct platform_device *pdev) | |
575 | { | |
576 | of_platform_populate(pdev->dev.of_node, altr_edac_device_of_match, | |
577 | NULL, &pdev->dev); | |
578 | return 0; | |
579 | } | |
580 | ||
581 | static struct platform_driver altr_edac_driver = { | |
582 | .probe = altr_edac_probe, | |
583 | .driver = { | |
584 | .name = "socfpga_ecc_manager", | |
585 | .of_match_table = altr_edac_of_match, | |
586 | }, | |
587 | }; | |
588 | module_platform_driver(altr_edac_driver); | |
589 | ||
590 | /************************* EDAC Device Functions *************************/ | |
591 | ||
592 | /* | |
593 | * EDAC Device Functions (shared between various IPs). | |
594 | * The discrete memories use the EDAC Device framework. The probe | |
595 | * and error handling functions are very similar between memories | |
596 | * so they are shared. The memory allocation and freeing for EDAC | |
597 | * trigger testing are different for each memory. | |
598 | */ | |
599 | ||
1cf70377 TT |
600 | static const struct edac_device_prv_data ocramecc_data; |
601 | static const struct edac_device_prv_data l2ecc_data; | |
602 | static const struct edac_device_prv_data a10_ocramecc_data; | |
603 | static const struct edac_device_prv_data a10_l2ecc_data; | |
c3eea194 | 604 | |
c3eea194 TT |
605 | static irqreturn_t altr_edac_device_handler(int irq, void *dev_id) |
606 | { | |
607 | irqreturn_t ret_value = IRQ_NONE; | |
608 | struct edac_device_ctl_info *dci = dev_id; | |
609 | struct altr_edac_device_dev *drvdata = dci->pvt_info; | |
610 | const struct edac_device_prv_data *priv = drvdata->data; | |
611 | ||
612 | if (irq == drvdata->sb_irq) { | |
613 | if (priv->ce_clear_mask) | |
614 | writel(priv->ce_clear_mask, drvdata->base); | |
615 | edac_device_handle_ce(dci, 0, 0, drvdata->edac_dev_name); | |
616 | ret_value = IRQ_HANDLED; | |
617 | } else if (irq == drvdata->db_irq) { | |
618 | if (priv->ue_clear_mask) | |
619 | writel(priv->ue_clear_mask, drvdata->base); | |
620 | edac_device_handle_ue(dci, 0, 0, drvdata->edac_dev_name); | |
621 | panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n"); | |
622 | ret_value = IRQ_HANDLED; | |
623 | } else { | |
624 | WARN_ON(1); | |
625 | } | |
626 | ||
627 | return ret_value; | |
628 | } | |
629 | ||
630 | static ssize_t altr_edac_device_trig(struct file *file, | |
631 | const char __user *user_buf, | |
632 | size_t count, loff_t *ppos) | |
633 | ||
634 | { | |
635 | u32 *ptemp, i, error_mask; | |
636 | int result = 0; | |
637 | u8 trig_type; | |
638 | unsigned long flags; | |
639 | struct edac_device_ctl_info *edac_dci = file->private_data; | |
640 | struct altr_edac_device_dev *drvdata = edac_dci->pvt_info; | |
641 | const struct edac_device_prv_data *priv = drvdata->data; | |
642 | void *generic_ptr = edac_dci->dev; | |
643 | ||
644 | if (!user_buf || get_user(trig_type, user_buf)) | |
645 | return -EFAULT; | |
646 | ||
647 | if (!priv->alloc_mem) | |
648 | return -ENOMEM; | |
649 | ||
650 | /* | |
651 | * Note that generic_ptr is initialized to the device * but in | |
652 | * some alloc_functions, this is overridden and returns data. | |
653 | */ | |
654 | ptemp = priv->alloc_mem(priv->trig_alloc_sz, &generic_ptr); | |
655 | if (!ptemp) { | |
656 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
657 | "Inject: Buffer Allocation error\n"); | |
658 | return -ENOMEM; | |
659 | } | |
660 | ||
661 | if (trig_type == ALTR_UE_TRIGGER_CHAR) | |
662 | error_mask = priv->ue_set_mask; | |
663 | else | |
664 | error_mask = priv->ce_set_mask; | |
665 | ||
666 | edac_printk(KERN_ALERT, EDAC_DEVICE, | |
667 | "Trigger Error Mask (0x%X)\n", error_mask); | |
668 | ||
669 | local_irq_save(flags); | |
670 | /* write ECC corrupted data out. */ | |
671 | for (i = 0; i < (priv->trig_alloc_sz / sizeof(*ptemp)); i++) { | |
672 | /* Read data so we're in the correct state */ | |
673 | rmb(); | |
332efa63 | 674 | if (READ_ONCE(ptemp[i])) |
c3eea194 TT |
675 | result = -1; |
676 | /* Toggle Error bit (it is latched), leave ECC enabled */ | |
811fce4f TT |
677 | writel(error_mask, (drvdata->base + priv->set_err_ofst)); |
678 | writel(priv->ecc_enable_mask, (drvdata->base + | |
679 | priv->set_err_ofst)); | |
c3eea194 TT |
680 | ptemp[i] = i; |
681 | } | |
682 | /* Ensure it has been written out */ | |
683 | wmb(); | |
684 | local_irq_restore(flags); | |
685 | ||
686 | if (result) | |
687 | edac_printk(KERN_ERR, EDAC_DEVICE, "Mem Not Cleared\n"); | |
688 | ||
689 | /* Read out written data. ECC error caused here */ | |
690 | for (i = 0; i < ALTR_TRIGGER_READ_WRD_CNT; i++) | |
332efa63 | 691 | if (READ_ONCE(ptemp[i]) != i) |
c3eea194 TT |
692 | edac_printk(KERN_ERR, EDAC_DEVICE, |
693 | "Read doesn't match written data\n"); | |
694 | ||
695 | if (priv->free_mem) | |
696 | priv->free_mem(ptemp, priv->trig_alloc_sz, generic_ptr); | |
697 | ||
698 | return count; | |
699 | } | |
700 | ||
701 | static const struct file_operations altr_edac_device_inject_fops = { | |
702 | .open = simple_open, | |
703 | .write = altr_edac_device_trig, | |
704 | .llseek = generic_file_llseek, | |
705 | }; | |
706 | ||
c7b4be8d TT |
707 | static ssize_t altr_edac_a10_device_trig(struct file *file, |
708 | const char __user *user_buf, | |
709 | size_t count, loff_t *ppos); | |
710 | ||
711 | static const struct file_operations altr_edac_a10_device_inject_fops = { | |
712 | .open = simple_open, | |
713 | .write = altr_edac_a10_device_trig, | |
714 | .llseek = generic_file_llseek, | |
715 | }; | |
716 | ||
064acbd4 TT |
717 | static ssize_t altr_edac_a10_device_trig2(struct file *file, |
718 | const char __user *user_buf, | |
719 | size_t count, loff_t *ppos); | |
720 | ||
721 | static const struct file_operations altr_edac_a10_device_inject2_fops = { | |
722 | .open = simple_open, | |
723 | .write = altr_edac_a10_device_trig2, | |
724 | .llseek = generic_file_llseek, | |
725 | }; | |
726 | ||
c3eea194 TT |
727 | static void altr_create_edacdev_dbgfs(struct edac_device_ctl_info *edac_dci, |
728 | const struct edac_device_prv_data *priv) | |
729 | { | |
730 | struct altr_edac_device_dev *drvdata = edac_dci->pvt_info; | |
731 | ||
732 | if (!IS_ENABLED(CONFIG_EDAC_DEBUG)) | |
733 | return; | |
734 | ||
735 | drvdata->debugfs_dir = edac_debugfs_create_dir(drvdata->edac_dev_name); | |
736 | if (!drvdata->debugfs_dir) | |
737 | return; | |
738 | ||
f399f34b | 739 | if (!edac_debugfs_create_file("altr_trigger", S_IWUSR, |
c3eea194 | 740 | drvdata->debugfs_dir, edac_dci, |
e17ced2c | 741 | priv->inject_fops)) |
c3eea194 TT |
742 | debugfs_remove_recursive(drvdata->debugfs_dir); |
743 | } | |
744 | ||
745 | static const struct of_device_id altr_edac_device_of_match[] = { | |
746 | #ifdef CONFIG_EDAC_ALTERA_L2C | |
2c911f6c | 747 | { .compatible = "altr,socfpga-l2-ecc", .data = &l2ecc_data }, |
c3eea194 TT |
748 | #endif |
749 | #ifdef CONFIG_EDAC_ALTERA_OCRAM | |
2c911f6c | 750 | { .compatible = "altr,socfpga-ocram-ecc", .data = &ocramecc_data }, |
c3eea194 TT |
751 | #endif |
752 | {}, | |
753 | }; | |
754 | MODULE_DEVICE_TABLE(of, altr_edac_device_of_match); | |
755 | ||
756 | /* | |
757 | * altr_edac_device_probe() | |
758 | * This is a generic EDAC device driver that will support | |
759 | * various Altera memory devices such as the L2 cache ECC and | |
760 | * OCRAM ECC as well as the memories for other peripherals. | |
761 | * Module specific initialization is done by passing the | |
762 | * function index in the device tree. | |
763 | */ | |
764 | static int altr_edac_device_probe(struct platform_device *pdev) | |
765 | { | |
766 | struct edac_device_ctl_info *dci; | |
767 | struct altr_edac_device_dev *drvdata; | |
768 | struct resource *r; | |
769 | int res = 0; | |
770 | struct device_node *np = pdev->dev.of_node; | |
771 | char *ecc_name = (char *)np->name; | |
772 | static int dev_instance; | |
773 | ||
774 | if (!devres_open_group(&pdev->dev, NULL, GFP_KERNEL)) { | |
775 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
776 | "Unable to open devm\n"); | |
777 | return -ENOMEM; | |
778 | } | |
779 | ||
780 | r = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
781 | if (!r) { | |
782 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
783 | "Unable to get mem resource\n"); | |
784 | res = -ENODEV; | |
785 | goto fail; | |
786 | } | |
787 | ||
788 | if (!devm_request_mem_region(&pdev->dev, r->start, resource_size(r), | |
789 | dev_name(&pdev->dev))) { | |
790 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
791 | "%s:Error requesting mem region\n", ecc_name); | |
792 | res = -EBUSY; | |
793 | goto fail; | |
794 | } | |
795 | ||
796 | dci = edac_device_alloc_ctl_info(sizeof(*drvdata), ecc_name, | |
797 | 1, ecc_name, 1, 0, NULL, 0, | |
798 | dev_instance++); | |
799 | ||
800 | if (!dci) { | |
801 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
802 | "%s: Unable to allocate EDAC device\n", ecc_name); | |
803 | res = -ENOMEM; | |
804 | goto fail; | |
805 | } | |
806 | ||
807 | drvdata = dci->pvt_info; | |
808 | dci->dev = &pdev->dev; | |
809 | platform_set_drvdata(pdev, dci); | |
810 | drvdata->edac_dev_name = ecc_name; | |
811 | ||
812 | drvdata->base = devm_ioremap(&pdev->dev, r->start, resource_size(r)); | |
8b073d94 CJ |
813 | if (!drvdata->base) { |
814 | res = -ENOMEM; | |
c3eea194 | 815 | goto fail1; |
8b073d94 | 816 | } |
c3eea194 TT |
817 | |
818 | /* Get driver specific data for this EDAC device */ | |
819 | drvdata->data = of_match_node(altr_edac_device_of_match, np)->data; | |
820 | ||
821 | /* Check specific dependencies for the module */ | |
822 | if (drvdata->data->setup) { | |
328ca7ae | 823 | res = drvdata->data->setup(drvdata); |
c3eea194 TT |
824 | if (res) |
825 | goto fail1; | |
826 | } | |
827 | ||
828 | drvdata->sb_irq = platform_get_irq(pdev, 0); | |
829 | res = devm_request_irq(&pdev->dev, drvdata->sb_irq, | |
830 | altr_edac_device_handler, | |
831 | 0, dev_name(&pdev->dev), dci); | |
832 | if (res) | |
833 | goto fail1; | |
834 | ||
835 | drvdata->db_irq = platform_get_irq(pdev, 1); | |
836 | res = devm_request_irq(&pdev->dev, drvdata->db_irq, | |
837 | altr_edac_device_handler, | |
838 | 0, dev_name(&pdev->dev), dci); | |
839 | if (res) | |
840 | goto fail1; | |
841 | ||
842 | dci->mod_name = "Altera ECC Manager"; | |
843 | dci->dev_name = drvdata->edac_dev_name; | |
844 | ||
845 | res = edac_device_add_device(dci); | |
846 | if (res) | |
847 | goto fail1; | |
848 | ||
849 | altr_create_edacdev_dbgfs(dci, drvdata->data); | |
850 | ||
851 | devres_close_group(&pdev->dev, NULL); | |
852 | ||
853 | return 0; | |
854 | ||
855 | fail1: | |
856 | edac_device_free_ctl_info(dci); | |
857 | fail: | |
858 | devres_release_group(&pdev->dev, NULL); | |
859 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
860 | "%s:Error setting up EDAC device: %d\n", ecc_name, res); | |
861 | ||
862 | return res; | |
863 | } | |
864 | ||
865 | static int altr_edac_device_remove(struct platform_device *pdev) | |
866 | { | |
867 | struct edac_device_ctl_info *dci = platform_get_drvdata(pdev); | |
868 | struct altr_edac_device_dev *drvdata = dci->pvt_info; | |
869 | ||
870 | debugfs_remove_recursive(drvdata->debugfs_dir); | |
871 | edac_device_del_device(&pdev->dev); | |
872 | edac_device_free_ctl_info(dci); | |
873 | ||
874 | return 0; | |
875 | } | |
876 | ||
877 | static struct platform_driver altr_edac_device_driver = { | |
878 | .probe = altr_edac_device_probe, | |
879 | .remove = altr_edac_device_remove, | |
880 | .driver = { | |
881 | .name = "altr_edac_device", | |
882 | .of_match_table = altr_edac_device_of_match, | |
883 | }, | |
884 | }; | |
885 | module_platform_driver(altr_edac_device_driver); | |
886 | ||
6b300fb9 | 887 | /******************* Arria10 Device ECC Shared Functions *****************/ |
c3eea194 | 888 | |
1aa6eb5c AB |
889 | /* |
890 | * Test for memory's ECC dependencies upon entry because platform specific | |
891 | * startup should have initialized the memory and enabled the ECC. | |
892 | * Can't turn on ECC here because accessing un-initialized memory will | |
893 | * cause CE/UE errors possibly causing an ABORT. | |
894 | */ | |
6b300fb9 TT |
895 | static int __maybe_unused |
896 | altr_check_ecc_deps(struct altr_edac_device_dev *device) | |
1aa6eb5c AB |
897 | { |
898 | void __iomem *base = device->base; | |
899 | const struct edac_device_prv_data *prv = device->data; | |
900 | ||
901 | if (readl(base + prv->ecc_en_ofst) & prv->ecc_enable_mask) | |
902 | return 0; | |
903 | ||
904 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
905 | "%s: No ECC present or ECC disabled.\n", | |
906 | device->edac_dev_name); | |
907 | return -ENODEV; | |
908 | } | |
c3eea194 | 909 | |
6b300fb9 TT |
910 | static irqreturn_t __maybe_unused altr_edac_a10_ecc_irq(int irq, void *dev_id) |
911 | { | |
912 | struct altr_edac_device_dev *dci = dev_id; | |
913 | void __iomem *base = dci->base; | |
914 | ||
915 | if (irq == dci->sb_irq) { | |
916 | writel(ALTR_A10_ECC_SERRPENA, | |
917 | base + ALTR_A10_ECC_INTSTAT_OFST); | |
918 | edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name); | |
919 | ||
920 | return IRQ_HANDLED; | |
921 | } else if (irq == dci->db_irq) { | |
922 | writel(ALTR_A10_ECC_DERRPENA, | |
923 | base + ALTR_A10_ECC_INTSTAT_OFST); | |
924 | edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name); | |
925 | if (dci->data->panic) | |
926 | panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n"); | |
927 | ||
928 | return IRQ_HANDLED; | |
929 | } | |
930 | ||
931 | WARN_ON(1); | |
932 | ||
933 | return IRQ_NONE; | |
934 | } | |
935 | ||
1166fde9 TT |
936 | /******************* Arria10 Memory Buffer Functions *********************/ |
937 | ||
938 | static inline int a10_get_irq_mask(struct device_node *np) | |
939 | { | |
940 | int irq; | |
941 | const u32 *handle = of_get_property(np, "interrupts", NULL); | |
942 | ||
943 | if (!handle) | |
944 | return -ENODEV; | |
945 | irq = be32_to_cpup(handle); | |
946 | return irq; | |
947 | } | |
948 | ||
949 | static inline void ecc_set_bits(u32 bit_mask, void __iomem *ioaddr) | |
950 | { | |
951 | u32 value = readl(ioaddr); | |
952 | ||
953 | value |= bit_mask; | |
954 | writel(value, ioaddr); | |
955 | } | |
956 | ||
957 | static inline void ecc_clear_bits(u32 bit_mask, void __iomem *ioaddr) | |
958 | { | |
959 | u32 value = readl(ioaddr); | |
960 | ||
961 | value &= ~bit_mask; | |
962 | writel(value, ioaddr); | |
963 | } | |
964 | ||
965 | static inline int ecc_test_bits(u32 bit_mask, void __iomem *ioaddr) | |
966 | { | |
967 | u32 value = readl(ioaddr); | |
968 | ||
969 | return (value & bit_mask) ? 1 : 0; | |
970 | } | |
971 | ||
972 | /* | |
973 | * This function uses the memory initialization block in the Arria10 ECC | |
974 | * controller to initialize/clear the entire memory data and ECC data. | |
975 | */ | |
976 | static int __maybe_unused altr_init_memory_port(void __iomem *ioaddr, int port) | |
977 | { | |
978 | int limit = ALTR_A10_ECC_INIT_WATCHDOG_10US; | |
979 | u32 init_mask, stat_mask, clear_mask; | |
980 | int ret = 0; | |
981 | ||
982 | if (port) { | |
983 | init_mask = ALTR_A10_ECC_INITB; | |
984 | stat_mask = ALTR_A10_ECC_INITCOMPLETEB; | |
985 | clear_mask = ALTR_A10_ECC_ERRPENB_MASK; | |
986 | } else { | |
987 | init_mask = ALTR_A10_ECC_INITA; | |
988 | stat_mask = ALTR_A10_ECC_INITCOMPLETEA; | |
989 | clear_mask = ALTR_A10_ECC_ERRPENA_MASK; | |
990 | } | |
991 | ||
992 | ecc_set_bits(init_mask, (ioaddr + ALTR_A10_ECC_CTRL_OFST)); | |
993 | while (limit--) { | |
994 | if (ecc_test_bits(stat_mask, | |
995 | (ioaddr + ALTR_A10_ECC_INITSTAT_OFST))) | |
996 | break; | |
997 | udelay(1); | |
998 | } | |
999 | if (limit < 0) | |
1000 | ret = -EBUSY; | |
1001 | ||
1002 | /* Clear any pending ECC interrupts */ | |
1003 | writel(clear_mask, (ioaddr + ALTR_A10_ECC_INTSTAT_OFST)); | |
1004 | ||
1005 | return ret; | |
1006 | } | |
1007 | ||
064acbd4 TT |
1008 | static int socfpga_is_a10(void) |
1009 | { | |
1010 | return of_machine_is_compatible("altr,socfpga-arria10"); | |
1011 | } | |
1012 | ||
1013 | static int socfpga_is_s10(void) | |
1014 | { | |
1015 | return of_machine_is_compatible("altr,socfpga-stratix10"); | |
1016 | } | |
1017 | ||
1166fde9 TT |
1018 | static __init int __maybe_unused |
1019 | altr_init_a10_ecc_block(struct device_node *np, u32 irq_mask, | |
1020 | u32 ecc_ctrl_en_mask, bool dual_port) | |
1021 | { | |
1022 | int ret = 0; | |
1023 | void __iomem *ecc_block_base; | |
1024 | struct regmap *ecc_mgr_map; | |
1025 | char *ecc_name; | |
1026 | struct device_node *np_eccmgr; | |
1027 | ||
1028 | ecc_name = (char *)np->name; | |
1029 | ||
1030 | /* Get the ECC Manager - parent of the device EDACs */ | |
1031 | np_eccmgr = of_get_parent(np); | |
064acbd4 TT |
1032 | |
1033 | if (socfpga_is_a10()) { | |
1034 | ecc_mgr_map = syscon_regmap_lookup_by_phandle(np_eccmgr, | |
1035 | "altr,sysmgr-syscon"); | |
1036 | } else { | |
1037 | struct device_node *sysmgr_np; | |
1038 | struct resource res; | |
8537bf10 | 1039 | uintptr_t base; |
064acbd4 TT |
1040 | |
1041 | sysmgr_np = of_parse_phandle(np_eccmgr, | |
1042 | "altr,sysmgr-syscon", 0); | |
1043 | if (!sysmgr_np) { | |
1044 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1045 | "Unable to find altr,sysmgr-syscon\n"); | |
1046 | return -ENODEV; | |
1047 | } | |
1048 | ||
1049 | if (of_address_to_resource(sysmgr_np, 0, &res)) | |
1050 | return -ENOMEM; | |
1051 | ||
1052 | /* Need physical address for SMCC call */ | |
8537bf10 | 1053 | base = res.start; |
064acbd4 | 1054 | |
8537bf10 | 1055 | ecc_mgr_map = regmap_init(NULL, NULL, (void *)base, |
064acbd4 TT |
1056 | &s10_sdram_regmap_cfg); |
1057 | } | |
1166fde9 TT |
1058 | of_node_put(np_eccmgr); |
1059 | if (IS_ERR(ecc_mgr_map)) { | |
1060 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1061 | "Unable to get syscon altr,sysmgr-syscon\n"); | |
1062 | return -ENODEV; | |
1063 | } | |
1064 | ||
1065 | /* Map the ECC Block */ | |
1066 | ecc_block_base = of_iomap(np, 0); | |
1067 | if (!ecc_block_base) { | |
1068 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1069 | "Unable to map %s ECC block\n", ecc_name); | |
1070 | return -ENODEV; | |
1071 | } | |
1072 | ||
1073 | /* Disable ECC */ | |
1074 | regmap_write(ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_SET_OFST, irq_mask); | |
1075 | writel(ALTR_A10_ECC_SERRINTEN, | |
1076 | (ecc_block_base + ALTR_A10_ECC_ERRINTENR_OFST)); | |
1077 | ecc_clear_bits(ecc_ctrl_en_mask, | |
1078 | (ecc_block_base + ALTR_A10_ECC_CTRL_OFST)); | |
1079 | /* Ensure all writes complete */ | |
1080 | wmb(); | |
1081 | /* Use HW initialization block to initialize memory for ECC */ | |
1082 | ret = altr_init_memory_port(ecc_block_base, 0); | |
1083 | if (ret) { | |
1084 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1085 | "ECC: cannot init %s PORTA memory\n", ecc_name); | |
1086 | goto out; | |
1087 | } | |
1088 | ||
1089 | if (dual_port) { | |
1090 | ret = altr_init_memory_port(ecc_block_base, 1); | |
1091 | if (ret) { | |
1092 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1093 | "ECC: cannot init %s PORTB memory\n", | |
1094 | ecc_name); | |
1095 | goto out; | |
1096 | } | |
1097 | } | |
1098 | ||
1099 | /* Interrupt mode set to every SBERR */ | |
1100 | regmap_write(ecc_mgr_map, ALTR_A10_ECC_INTMODE_OFST, | |
1101 | ALTR_A10_ECC_INTMODE); | |
1102 | /* Enable ECC */ | |
1103 | ecc_set_bits(ecc_ctrl_en_mask, (ecc_block_base + | |
1104 | ALTR_A10_ECC_CTRL_OFST)); | |
1105 | writel(ALTR_A10_ECC_SERRINTEN, | |
1106 | (ecc_block_base + ALTR_A10_ECC_ERRINTENS_OFST)); | |
1107 | regmap_write(ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_CLR_OFST, irq_mask); | |
1108 | /* Ensure all writes complete */ | |
1109 | wmb(); | |
1110 | out: | |
1111 | iounmap(ecc_block_base); | |
1112 | return ret; | |
1113 | } | |
1114 | ||
1115 | static int validate_parent_available(struct device_node *np); | |
1116 | static const struct of_device_id altr_edac_a10_device_of_match[]; | |
1117 | static int __init __maybe_unused altr_init_a10_ecc_device_type(char *compat) | |
1118 | { | |
1119 | int irq; | |
25b223dd TT |
1120 | struct device_node *child, *np; |
1121 | ||
064acbd4 | 1122 | if (!socfpga_is_a10() && !socfpga_is_s10()) |
25b223dd TT |
1123 | return -ENODEV; |
1124 | ||
1125 | np = of_find_compatible_node(NULL, NULL, | |
1126 | "altr,socfpga-a10-ecc-manager"); | |
1166fde9 TT |
1127 | if (!np) { |
1128 | edac_printk(KERN_ERR, EDAC_DEVICE, "ECC Manager not found\n"); | |
1129 | return -ENODEV; | |
1130 | } | |
1131 | ||
1132 | for_each_child_of_node(np, child) { | |
1133 | const struct of_device_id *pdev_id; | |
1134 | const struct edac_device_prv_data *prv; | |
1135 | ||
1136 | if (!of_device_is_available(child)) | |
1137 | continue; | |
1138 | if (!of_device_is_compatible(child, compat)) | |
1139 | continue; | |
1140 | ||
1141 | if (validate_parent_available(child)) | |
1142 | continue; | |
1143 | ||
1144 | irq = a10_get_irq_mask(child); | |
1145 | if (irq < 0) | |
1146 | continue; | |
1147 | ||
1148 | /* Get matching node and check for valid result */ | |
1149 | pdev_id = of_match_node(altr_edac_a10_device_of_match, child); | |
1150 | if (IS_ERR_OR_NULL(pdev_id)) | |
1151 | continue; | |
1152 | ||
1153 | /* Validate private data pointer before dereferencing */ | |
1154 | prv = pdev_id->data; | |
1155 | if (!prv) | |
1156 | continue; | |
1157 | ||
1158 | altr_init_a10_ecc_block(child, BIT(irq), | |
1159 | prv->ecc_enable_mask, 0); | |
1160 | } | |
1161 | ||
1162 | of_node_put(np); | |
1163 | return 0; | |
1164 | } | |
1165 | ||
6b300fb9 TT |
1166 | /*********************** OCRAM EDAC Device Functions *********************/ |
1167 | ||
1168 | #ifdef CONFIG_EDAC_ALTERA_OCRAM | |
1169 | ||
c3eea194 TT |
1170 | static void *ocram_alloc_mem(size_t size, void **other) |
1171 | { | |
1172 | struct device_node *np; | |
1173 | struct gen_pool *gp; | |
1174 | void *sram_addr; | |
1175 | ||
1176 | np = of_find_compatible_node(NULL, NULL, "altr,socfpga-ocram-ecc"); | |
1177 | if (!np) | |
1178 | return NULL; | |
1179 | ||
1180 | gp = of_gen_pool_get(np, "iram", 0); | |
1181 | of_node_put(np); | |
1182 | if (!gp) | |
1183 | return NULL; | |
1184 | ||
1185 | sram_addr = (void *)gen_pool_alloc(gp, size); | |
1186 | if (!sram_addr) | |
1187 | return NULL; | |
1188 | ||
1189 | memset(sram_addr, 0, size); | |
1190 | /* Ensure data is written out */ | |
1191 | wmb(); | |
1192 | ||
1193 | /* Remember this handle for freeing later */ | |
1194 | *other = gp; | |
1195 | ||
1196 | return sram_addr; | |
1197 | } | |
1198 | ||
1199 | static void ocram_free_mem(void *p, size_t size, void *other) | |
1200 | { | |
9ef20753 | 1201 | gen_pool_free((struct gen_pool *)other, (unsigned long)p, size); |
c3eea194 TT |
1202 | } |
1203 | ||
1cf70377 | 1204 | static const struct edac_device_prv_data ocramecc_data = { |
aa1f06dc | 1205 | .setup = altr_check_ecc_deps, |
c3eea194 TT |
1206 | .ce_clear_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_SERR), |
1207 | .ue_clear_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_DERR), | |
c3eea194 TT |
1208 | .alloc_mem = ocram_alloc_mem, |
1209 | .free_mem = ocram_free_mem, | |
1210 | .ecc_enable_mask = ALTR_OCR_ECC_EN, | |
943ad917 | 1211 | .ecc_en_ofst = ALTR_OCR_ECC_REG_OFFSET, |
c3eea194 TT |
1212 | .ce_set_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_INJS), |
1213 | .ue_set_mask = (ALTR_OCR_ECC_EN | ALTR_OCR_ECC_INJD), | |
811fce4f | 1214 | .set_err_ofst = ALTR_OCR_ECC_REG_OFFSET, |
c3eea194 | 1215 | .trig_alloc_sz = ALTR_TRIG_OCRAM_BYTE_SIZE, |
e17ced2c | 1216 | .inject_fops = &altr_edac_device_inject_fops, |
c3eea194 TT |
1217 | }; |
1218 | ||
1cf70377 | 1219 | static const struct edac_device_prv_data a10_ocramecc_data = { |
c7b4be8d TT |
1220 | .setup = altr_check_ecc_deps, |
1221 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, | |
1222 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
1223 | .irq_status_mask = A10_SYSMGR_ECC_INTSTAT_OCRAM, | |
c7b4be8d TT |
1224 | .ecc_enable_mask = ALTR_A10_OCRAM_ECC_EN_CTL, |
1225 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1226 | .ce_set_mask = ALTR_A10_ECC_TSERRA, | |
1227 | .ue_set_mask = ALTR_A10_ECC_TDERRA, | |
1228 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1229 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
1230 | .inject_fops = &altr_edac_a10_device_inject_fops, | |
2b083d65 TT |
1231 | /* |
1232 | * OCRAM panic on uncorrectable error because sleep/resume | |
1233 | * functions and FPGA contents are stored in OCRAM. Prefer | |
1234 | * a kernel panic over executing/loading corrupted data. | |
1235 | */ | |
1236 | .panic = true, | |
c7b4be8d TT |
1237 | }; |
1238 | ||
c3eea194 TT |
1239 | #endif /* CONFIG_EDAC_ALTERA_OCRAM */ |
1240 | ||
1241 | /********************* L2 Cache EDAC Device Functions ********************/ | |
1242 | ||
1243 | #ifdef CONFIG_EDAC_ALTERA_L2C | |
1244 | ||
1245 | static void *l2_alloc_mem(size_t size, void **other) | |
1246 | { | |
1247 | struct device *dev = *other; | |
1248 | void *ptemp = devm_kzalloc(dev, size, GFP_KERNEL); | |
1249 | ||
1250 | if (!ptemp) | |
1251 | return NULL; | |
1252 | ||
1253 | /* Make sure everything is written out */ | |
1254 | wmb(); | |
1255 | ||
1256 | /* | |
1257 | * Clean all cache levels up to LoC (includes L2) | |
1258 | * This ensures the corrupted data is written into | |
1259 | * L2 cache for readback test (which causes ECC error). | |
1260 | */ | |
1261 | flush_cache_all(); | |
1262 | ||
1263 | return ptemp; | |
1264 | } | |
1265 | ||
1266 | static void l2_free_mem(void *p, size_t size, void *other) | |
1267 | { | |
1268 | struct device *dev = other; | |
1269 | ||
1270 | if (dev && p) | |
1271 | devm_kfree(dev, p); | |
1272 | } | |
1273 | ||
1274 | /* | |
1275 | * altr_l2_check_deps() | |
1276 | * Test for L2 cache ECC dependencies upon entry because | |
1277 | * platform specific startup should have initialized the L2 | |
1278 | * memory and enabled the ECC. | |
1279 | * Bail if ECC is not enabled. | |
1280 | * Note that L2 Cache Enable is forced at build time. | |
1281 | */ | |
328ca7ae | 1282 | static int altr_l2_check_deps(struct altr_edac_device_dev *device) |
c3eea194 | 1283 | { |
328ca7ae | 1284 | void __iomem *base = device->base; |
27439a1a TT |
1285 | const struct edac_device_prv_data *prv = device->data; |
1286 | ||
1287 | if ((readl(base) & prv->ecc_enable_mask) == | |
1288 | prv->ecc_enable_mask) | |
c3eea194 TT |
1289 | return 0; |
1290 | ||
1291 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1292 | "L2: No ECC present, or ECC disabled\n"); | |
1293 | return -ENODEV; | |
1294 | } | |
1295 | ||
13ab8448 | 1296 | static irqreturn_t altr_edac_a10_l2_irq(int irq, void *dev_id) |
588cb03e | 1297 | { |
13ab8448 TT |
1298 | struct altr_edac_device_dev *dci = dev_id; |
1299 | ||
1300 | if (irq == dci->sb_irq) { | |
588cb03e TT |
1301 | regmap_write(dci->edac->ecc_mgr_map, |
1302 | A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST, | |
1303 | A10_SYSGMR_MPU_CLEAR_L2_ECC_SB); | |
1304 | edac_device_handle_ce(dci->edac_dev, 0, 0, dci->edac_dev_name); | |
13ab8448 TT |
1305 | |
1306 | return IRQ_HANDLED; | |
1307 | } else if (irq == dci->db_irq) { | |
588cb03e TT |
1308 | regmap_write(dci->edac->ecc_mgr_map, |
1309 | A10_SYSGMR_MPU_CLEAR_L2_ECC_OFST, | |
1310 | A10_SYSGMR_MPU_CLEAR_L2_ECC_MB); | |
1311 | edac_device_handle_ue(dci->edac_dev, 0, 0, dci->edac_dev_name); | |
1312 | panic("\nEDAC:ECC_DEVICE[Uncorrectable errors]\n"); | |
13ab8448 TT |
1313 | |
1314 | return IRQ_HANDLED; | |
588cb03e | 1315 | } |
13ab8448 TT |
1316 | |
1317 | WARN_ON(1); | |
1318 | ||
1319 | return IRQ_NONE; | |
588cb03e TT |
1320 | } |
1321 | ||
1cf70377 | 1322 | static const struct edac_device_prv_data l2ecc_data = { |
c3eea194 TT |
1323 | .setup = altr_l2_check_deps, |
1324 | .ce_clear_mask = 0, | |
1325 | .ue_clear_mask = 0, | |
c3eea194 TT |
1326 | .alloc_mem = l2_alloc_mem, |
1327 | .free_mem = l2_free_mem, | |
1328 | .ecc_enable_mask = ALTR_L2_ECC_EN, | |
1329 | .ce_set_mask = (ALTR_L2_ECC_EN | ALTR_L2_ECC_INJS), | |
1330 | .ue_set_mask = (ALTR_L2_ECC_EN | ALTR_L2_ECC_INJD), | |
811fce4f | 1331 | .set_err_ofst = ALTR_L2_ECC_REG_OFFSET, |
c3eea194 | 1332 | .trig_alloc_sz = ALTR_TRIG_L2C_BYTE_SIZE, |
e17ced2c | 1333 | .inject_fops = &altr_edac_device_inject_fops, |
c3eea194 TT |
1334 | }; |
1335 | ||
1cf70377 | 1336 | static const struct edac_device_prv_data a10_l2ecc_data = { |
588cb03e TT |
1337 | .setup = altr_l2_check_deps, |
1338 | .ce_clear_mask = ALTR_A10_L2_ECC_SERR_CLR, | |
1339 | .ue_clear_mask = ALTR_A10_L2_ECC_MERR_CLR, | |
1340 | .irq_status_mask = A10_SYSMGR_ECC_INTSTAT_L2, | |
588cb03e TT |
1341 | .alloc_mem = l2_alloc_mem, |
1342 | .free_mem = l2_free_mem, | |
1343 | .ecc_enable_mask = ALTR_A10_L2_ECC_EN_CTL, | |
1344 | .ce_set_mask = ALTR_A10_L2_ECC_CE_INJ_MASK, | |
1345 | .ue_set_mask = ALTR_A10_L2_ECC_UE_INJ_MASK, | |
1346 | .set_err_ofst = ALTR_A10_L2_ECC_INJ_OFST, | |
1347 | .ecc_irq_handler = altr_edac_a10_l2_irq, | |
1348 | .trig_alloc_sz = ALTR_TRIG_L2C_BYTE_SIZE, | |
e17ced2c | 1349 | .inject_fops = &altr_edac_device_inject_fops, |
588cb03e TT |
1350 | }; |
1351 | ||
c3eea194 TT |
1352 | #endif /* CONFIG_EDAC_ALTERA_L2C */ |
1353 | ||
ab8c1e0f TT |
1354 | /********************* Ethernet Device Functions ********************/ |
1355 | ||
1356 | #ifdef CONFIG_EDAC_ALTERA_ETHERNET | |
1357 | ||
1358 | static const struct edac_device_prv_data a10_enetecc_data = { | |
1359 | .setup = altr_check_ecc_deps, | |
1360 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, | |
1361 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
ab8c1e0f TT |
1362 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1363 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1364 | .ce_set_mask = ALTR_A10_ECC_TSERRA, | |
1365 | .ue_set_mask = ALTR_A10_ECC_TDERRA, | |
1366 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1367 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
064acbd4 | 1368 | .inject_fops = &altr_edac_a10_device_inject2_fops, |
ab8c1e0f TT |
1369 | }; |
1370 | ||
1371 | static int __init socfpga_init_ethernet_ecc(void) | |
1372 | { | |
1373 | return altr_init_a10_ecc_device_type("altr,socfpga-eth-mac-ecc"); | |
1374 | } | |
1375 | ||
1376 | early_initcall(socfpga_init_ethernet_ecc); | |
1377 | ||
1378 | #endif /* CONFIG_EDAC_ALTERA_ETHERNET */ | |
1379 | ||
c6882fb2 TT |
1380 | /********************** NAND Device Functions **********************/ |
1381 | ||
1382 | #ifdef CONFIG_EDAC_ALTERA_NAND | |
1383 | ||
1384 | static const struct edac_device_prv_data a10_nandecc_data = { | |
1385 | .setup = altr_check_ecc_deps, | |
1386 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, | |
1387 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
c6882fb2 TT |
1388 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1389 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1390 | .ce_set_mask = ALTR_A10_ECC_TSERRA, | |
1391 | .ue_set_mask = ALTR_A10_ECC_TDERRA, | |
1392 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1393 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
1394 | .inject_fops = &altr_edac_a10_device_inject_fops, | |
1395 | }; | |
1396 | ||
1397 | static int __init socfpga_init_nand_ecc(void) | |
1398 | { | |
1399 | return altr_init_a10_ecc_device_type("altr,socfpga-nand-ecc"); | |
1400 | } | |
1401 | ||
1402 | early_initcall(socfpga_init_nand_ecc); | |
1403 | ||
1404 | #endif /* CONFIG_EDAC_ALTERA_NAND */ | |
1405 | ||
e8263793 TT |
1406 | /********************** DMA Device Functions **********************/ |
1407 | ||
1408 | #ifdef CONFIG_EDAC_ALTERA_DMA | |
1409 | ||
1410 | static const struct edac_device_prv_data a10_dmaecc_data = { | |
1411 | .setup = altr_check_ecc_deps, | |
1412 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, | |
1413 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
e8263793 TT |
1414 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1415 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1416 | .ce_set_mask = ALTR_A10_ECC_TSERRA, | |
1417 | .ue_set_mask = ALTR_A10_ECC_TDERRA, | |
1418 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1419 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
1420 | .inject_fops = &altr_edac_a10_device_inject_fops, | |
1421 | }; | |
1422 | ||
1423 | static int __init socfpga_init_dma_ecc(void) | |
1424 | { | |
1425 | return altr_init_a10_ecc_device_type("altr,socfpga-dma-ecc"); | |
1426 | } | |
1427 | ||
1428 | early_initcall(socfpga_init_dma_ecc); | |
1429 | ||
1430 | #endif /* CONFIG_EDAC_ALTERA_DMA */ | |
1431 | ||
c609581d TT |
1432 | /********************** USB Device Functions **********************/ |
1433 | ||
1434 | #ifdef CONFIG_EDAC_ALTERA_USB | |
1435 | ||
1436 | static const struct edac_device_prv_data a10_usbecc_data = { | |
1437 | .setup = altr_check_ecc_deps, | |
1438 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, | |
1439 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
c609581d TT |
1440 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1441 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1442 | .ce_set_mask = ALTR_A10_ECC_TSERRA, | |
1443 | .ue_set_mask = ALTR_A10_ECC_TDERRA, | |
1444 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1445 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
064acbd4 | 1446 | .inject_fops = &altr_edac_a10_device_inject2_fops, |
c609581d TT |
1447 | }; |
1448 | ||
1449 | static int __init socfpga_init_usb_ecc(void) | |
1450 | { | |
1451 | return altr_init_a10_ecc_device_type("altr,socfpga-usb-ecc"); | |
1452 | } | |
1453 | ||
1454 | early_initcall(socfpga_init_usb_ecc); | |
1455 | ||
1456 | #endif /* CONFIG_EDAC_ALTERA_USB */ | |
1457 | ||
485fe9e2 TT |
1458 | /********************** QSPI Device Functions **********************/ |
1459 | ||
1460 | #ifdef CONFIG_EDAC_ALTERA_QSPI | |
1461 | ||
1462 | static const struct edac_device_prv_data a10_qspiecc_data = { | |
1463 | .setup = altr_check_ecc_deps, | |
1464 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, | |
1465 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
485fe9e2 TT |
1466 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1467 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1468 | .ce_set_mask = ALTR_A10_ECC_TSERRA, | |
1469 | .ue_set_mask = ALTR_A10_ECC_TDERRA, | |
1470 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1471 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
1472 | .inject_fops = &altr_edac_a10_device_inject_fops, | |
1473 | }; | |
1474 | ||
1475 | static int __init socfpga_init_qspi_ecc(void) | |
1476 | { | |
1477 | return altr_init_a10_ecc_device_type("altr,socfpga-qspi-ecc"); | |
1478 | } | |
1479 | ||
1480 | early_initcall(socfpga_init_qspi_ecc); | |
1481 | ||
1482 | #endif /* CONFIG_EDAC_ALTERA_QSPI */ | |
1483 | ||
91104984 TT |
1484 | /********************* SDMMC Device Functions **********************/ |
1485 | ||
1486 | #ifdef CONFIG_EDAC_ALTERA_SDMMC | |
1487 | ||
1488 | static const struct edac_device_prv_data a10_sdmmceccb_data; | |
1489 | static int altr_portb_setup(struct altr_edac_device_dev *device) | |
1490 | { | |
1491 | struct edac_device_ctl_info *dci; | |
1492 | struct altr_edac_device_dev *altdev; | |
1493 | char *ecc_name = "sdmmcb-ecc"; | |
1494 | int edac_idx, rc; | |
1495 | struct device_node *np; | |
1496 | const struct edac_device_prv_data *prv = &a10_sdmmceccb_data; | |
1497 | ||
1498 | rc = altr_check_ecc_deps(device); | |
1499 | if (rc) | |
1500 | return rc; | |
1501 | ||
1502 | np = of_find_compatible_node(NULL, NULL, "altr,socfpga-sdmmc-ecc"); | |
1503 | if (!np) { | |
1504 | edac_printk(KERN_WARNING, EDAC_DEVICE, "SDMMC node not found\n"); | |
1505 | return -ENODEV; | |
1506 | } | |
1507 | ||
1508 | /* Create the PortB EDAC device */ | |
1509 | edac_idx = edac_device_alloc_index(); | |
1510 | dci = edac_device_alloc_ctl_info(sizeof(*altdev), ecc_name, 1, | |
1511 | ecc_name, 1, 0, NULL, 0, edac_idx); | |
1512 | if (!dci) { | |
1513 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1514 | "%s: Unable to allocate PortB EDAC device\n", | |
1515 | ecc_name); | |
1516 | return -ENOMEM; | |
1517 | } | |
1518 | ||
1519 | /* Initialize the PortB EDAC device structure from PortA structure */ | |
1520 | altdev = dci->pvt_info; | |
1521 | *altdev = *device; | |
1522 | ||
1523 | if (!devres_open_group(&altdev->ddev, altr_portb_setup, GFP_KERNEL)) | |
1524 | return -ENOMEM; | |
1525 | ||
1526 | /* Update PortB specific values */ | |
1527 | altdev->edac_dev_name = ecc_name; | |
1528 | altdev->edac_idx = edac_idx; | |
1529 | altdev->edac_dev = dci; | |
1530 | altdev->data = prv; | |
1531 | dci->dev = &altdev->ddev; | |
1532 | dci->ctl_name = "Altera ECC Manager"; | |
1533 | dci->mod_name = ecc_name; | |
1534 | dci->dev_name = ecc_name; | |
1535 | ||
1536 | /* Update the IRQs for PortB */ | |
1537 | altdev->sb_irq = irq_of_parse_and_map(np, 2); | |
1538 | if (!altdev->sb_irq) { | |
1539 | edac_printk(KERN_ERR, EDAC_DEVICE, "Error PortB SBIRQ alloc\n"); | |
1540 | rc = -ENODEV; | |
1541 | goto err_release_group_1; | |
1542 | } | |
1543 | rc = devm_request_irq(&altdev->ddev, altdev->sb_irq, | |
1544 | prv->ecc_irq_handler, | |
a29d64a4 TT |
1545 | IRQF_ONESHOT | IRQF_TRIGGER_HIGH, |
1546 | ecc_name, altdev); | |
91104984 TT |
1547 | if (rc) { |
1548 | edac_printk(KERN_ERR, EDAC_DEVICE, "PortB SBERR IRQ error\n"); | |
1549 | goto err_release_group_1; | |
1550 | } | |
1551 | ||
1552 | altdev->db_irq = irq_of_parse_and_map(np, 3); | |
1553 | if (!altdev->db_irq) { | |
1554 | edac_printk(KERN_ERR, EDAC_DEVICE, "Error PortB DBIRQ alloc\n"); | |
1555 | rc = -ENODEV; | |
1556 | goto err_release_group_1; | |
1557 | } | |
1558 | rc = devm_request_irq(&altdev->ddev, altdev->db_irq, | |
1559 | prv->ecc_irq_handler, | |
a29d64a4 TT |
1560 | IRQF_ONESHOT | IRQF_TRIGGER_HIGH, |
1561 | ecc_name, altdev); | |
91104984 TT |
1562 | if (rc) { |
1563 | edac_printk(KERN_ERR, EDAC_DEVICE, "PortB DBERR IRQ error\n"); | |
1564 | goto err_release_group_1; | |
1565 | } | |
1566 | ||
1567 | rc = edac_device_add_device(dci); | |
1568 | if (rc) { | |
1569 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1570 | "edac_device_add_device portB failed\n"); | |
1571 | rc = -ENOMEM; | |
1572 | goto err_release_group_1; | |
1573 | } | |
1574 | altr_create_edacdev_dbgfs(dci, prv); | |
1575 | ||
1576 | list_add(&altdev->next, &altdev->edac->a10_ecc_devices); | |
1577 | ||
1578 | devres_remove_group(&altdev->ddev, altr_portb_setup); | |
1579 | ||
1580 | return 0; | |
1581 | ||
1582 | err_release_group_1: | |
1583 | edac_device_free_ctl_info(dci); | |
1584 | devres_release_group(&altdev->ddev, altr_portb_setup); | |
1585 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1586 | "%s:Error setting up EDAC device: %d\n", ecc_name, rc); | |
1587 | return rc; | |
1588 | } | |
1589 | ||
1590 | static irqreturn_t altr_edac_a10_ecc_irq_portb(int irq, void *dev_id) | |
1591 | { | |
1592 | struct altr_edac_device_dev *ad = dev_id; | |
1593 | void __iomem *base = ad->base; | |
1594 | const struct edac_device_prv_data *priv = ad->data; | |
1595 | ||
1596 | if (irq == ad->sb_irq) { | |
1597 | writel(priv->ce_clear_mask, | |
1598 | base + ALTR_A10_ECC_INTSTAT_OFST); | |
1599 | edac_device_handle_ce(ad->edac_dev, 0, 0, ad->edac_dev_name); | |
1600 | return IRQ_HANDLED; | |
1601 | } else if (irq == ad->db_irq) { | |
1602 | writel(priv->ue_clear_mask, | |
1603 | base + ALTR_A10_ECC_INTSTAT_OFST); | |
1604 | edac_device_handle_ue(ad->edac_dev, 0, 0, ad->edac_dev_name); | |
1605 | return IRQ_HANDLED; | |
1606 | } | |
1607 | ||
1608 | WARN_ONCE(1, "Unhandled IRQ%d on Port B.", irq); | |
1609 | ||
1610 | return IRQ_NONE; | |
1611 | } | |
1612 | ||
1613 | static const struct edac_device_prv_data a10_sdmmcecca_data = { | |
1614 | .setup = altr_portb_setup, | |
1615 | .ce_clear_mask = ALTR_A10_ECC_SERRPENA, | |
1616 | .ue_clear_mask = ALTR_A10_ECC_DERRPENA, | |
91104984 TT |
1617 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1618 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1619 | .ce_set_mask = ALTR_A10_ECC_SERRPENA, | |
1620 | .ue_set_mask = ALTR_A10_ECC_DERRPENA, | |
1621 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1622 | .ecc_irq_handler = altr_edac_a10_ecc_irq, | |
1623 | .inject_fops = &altr_edac_a10_device_inject_fops, | |
1624 | }; | |
1625 | ||
1626 | static const struct edac_device_prv_data a10_sdmmceccb_data = { | |
1627 | .setup = altr_portb_setup, | |
1628 | .ce_clear_mask = ALTR_A10_ECC_SERRPENB, | |
1629 | .ue_clear_mask = ALTR_A10_ECC_DERRPENB, | |
91104984 TT |
1630 | .ecc_enable_mask = ALTR_A10_COMMON_ECC_EN_CTL, |
1631 | .ecc_en_ofst = ALTR_A10_ECC_CTRL_OFST, | |
1632 | .ce_set_mask = ALTR_A10_ECC_TSERRB, | |
1633 | .ue_set_mask = ALTR_A10_ECC_TDERRB, | |
1634 | .set_err_ofst = ALTR_A10_ECC_INTTEST_OFST, | |
1635 | .ecc_irq_handler = altr_edac_a10_ecc_irq_portb, | |
1636 | .inject_fops = &altr_edac_a10_device_inject_fops, | |
1637 | }; | |
1638 | ||
1639 | static int __init socfpga_init_sdmmc_ecc(void) | |
1640 | { | |
1641 | int rc = -ENODEV; | |
25b223dd TT |
1642 | struct device_node *child; |
1643 | ||
064acbd4 | 1644 | if (!socfpga_is_a10() && !socfpga_is_s10()) |
25b223dd TT |
1645 | return -ENODEV; |
1646 | ||
1647 | child = of_find_compatible_node(NULL, NULL, "altr,socfpga-sdmmc-ecc"); | |
91104984 TT |
1648 | if (!child) { |
1649 | edac_printk(KERN_WARNING, EDAC_DEVICE, "SDMMC node not found\n"); | |
1650 | return -ENODEV; | |
1651 | } | |
1652 | ||
1653 | if (!of_device_is_available(child)) | |
1654 | goto exit; | |
1655 | ||
1656 | if (validate_parent_available(child)) | |
1657 | goto exit; | |
1658 | ||
1659 | rc = altr_init_a10_ecc_block(child, ALTR_A10_SDMMC_IRQ_MASK, | |
1660 | a10_sdmmcecca_data.ecc_enable_mask, 1); | |
1661 | exit: | |
1662 | of_node_put(child); | |
1663 | return rc; | |
1664 | } | |
1665 | ||
1666 | early_initcall(socfpga_init_sdmmc_ecc); | |
1667 | ||
1668 | #endif /* CONFIG_EDAC_ALTERA_SDMMC */ | |
1669 | ||
588cb03e | 1670 | /********************* Arria10 EDAC Device Functions *************************/ |
ab564cb5 TT |
1671 | static const struct of_device_id altr_edac_a10_device_of_match[] = { |
1672 | #ifdef CONFIG_EDAC_ALTERA_L2C | |
1673 | { .compatible = "altr,socfpga-a10-l2-ecc", .data = &a10_l2ecc_data }, | |
1674 | #endif | |
1675 | #ifdef CONFIG_EDAC_ALTERA_OCRAM | |
1676 | { .compatible = "altr,socfpga-a10-ocram-ecc", | |
1677 | .data = &a10_ocramecc_data }, | |
ab8c1e0f TT |
1678 | #endif |
1679 | #ifdef CONFIG_EDAC_ALTERA_ETHERNET | |
1680 | { .compatible = "altr,socfpga-eth-mac-ecc", | |
1681 | .data = &a10_enetecc_data }, | |
c6882fb2 TT |
1682 | #endif |
1683 | #ifdef CONFIG_EDAC_ALTERA_NAND | |
1684 | { .compatible = "altr,socfpga-nand-ecc", .data = &a10_nandecc_data }, | |
e8263793 TT |
1685 | #endif |
1686 | #ifdef CONFIG_EDAC_ALTERA_DMA | |
1687 | { .compatible = "altr,socfpga-dma-ecc", .data = &a10_dmaecc_data }, | |
c609581d TT |
1688 | #endif |
1689 | #ifdef CONFIG_EDAC_ALTERA_USB | |
1690 | { .compatible = "altr,socfpga-usb-ecc", .data = &a10_usbecc_data }, | |
485fe9e2 TT |
1691 | #endif |
1692 | #ifdef CONFIG_EDAC_ALTERA_QSPI | |
1693 | { .compatible = "altr,socfpga-qspi-ecc", .data = &a10_qspiecc_data }, | |
91104984 TT |
1694 | #endif |
1695 | #ifdef CONFIG_EDAC_ALTERA_SDMMC | |
1696 | { .compatible = "altr,socfpga-sdmmc-ecc", .data = &a10_sdmmcecca_data }, | |
ab564cb5 TT |
1697 | #endif |
1698 | {}, | |
1699 | }; | |
1700 | MODULE_DEVICE_TABLE(of, altr_edac_a10_device_of_match); | |
588cb03e TT |
1701 | |
1702 | /* | |
1703 | * The Arria10 EDAC Device Functions differ from the Cyclone5/Arria5 | |
1704 | * because 2 IRQs are shared among the all ECC peripherals. The ECC | |
1705 | * manager manages the IRQs and the children. | |
1706 | * Based on xgene_edac.c peripheral code. | |
1707 | */ | |
1708 | ||
c7b4be8d TT |
1709 | static ssize_t altr_edac_a10_device_trig(struct file *file, |
1710 | const char __user *user_buf, | |
1711 | size_t count, loff_t *ppos) | |
1712 | { | |
1713 | struct edac_device_ctl_info *edac_dci = file->private_data; | |
1714 | struct altr_edac_device_dev *drvdata = edac_dci->pvt_info; | |
1715 | const struct edac_device_prv_data *priv = drvdata->data; | |
1716 | void __iomem *set_addr = (drvdata->base + priv->set_err_ofst); | |
1717 | unsigned long flags; | |
1718 | u8 trig_type; | |
1719 | ||
1720 | if (!user_buf || get_user(trig_type, user_buf)) | |
1721 | return -EFAULT; | |
1722 | ||
1723 | local_irq_save(flags); | |
1724 | if (trig_type == ALTR_UE_TRIGGER_CHAR) | |
1725 | writel(priv->ue_set_mask, set_addr); | |
1726 | else | |
1727 | writel(priv->ce_set_mask, set_addr); | |
064acbd4 TT |
1728 | |
1729 | /* Ensure the interrupt test bits are set */ | |
1730 | wmb(); | |
1731 | local_irq_restore(flags); | |
1732 | ||
1733 | return count; | |
1734 | } | |
1735 | ||
1736 | /* | |
1737 | * The Stratix10 EDAC Error Injection Functions differ from Arria10 | |
1738 | * slightly. A few Arria10 peripherals can use this injection function. | |
1739 | * Inject the error into the memory and then readback to trigger the IRQ. | |
1740 | */ | |
1741 | static ssize_t altr_edac_a10_device_trig2(struct file *file, | |
1742 | const char __user *user_buf, | |
1743 | size_t count, loff_t *ppos) | |
1744 | { | |
1745 | struct edac_device_ctl_info *edac_dci = file->private_data; | |
1746 | struct altr_edac_device_dev *drvdata = edac_dci->pvt_info; | |
1747 | const struct edac_device_prv_data *priv = drvdata->data; | |
1748 | void __iomem *set_addr = (drvdata->base + priv->set_err_ofst); | |
1749 | unsigned long flags; | |
1750 | u8 trig_type; | |
1751 | ||
1752 | if (!user_buf || get_user(trig_type, user_buf)) | |
1753 | return -EFAULT; | |
1754 | ||
1755 | local_irq_save(flags); | |
1756 | if (trig_type == ALTR_UE_TRIGGER_CHAR) { | |
1757 | writel(priv->ue_set_mask, set_addr); | |
1758 | } else { | |
1759 | /* Setup write of 0 to first 4 bytes */ | |
1760 | writel(0x0, drvdata->base + ECC_BLK_WDATA0_OFST); | |
1761 | writel(0x0, drvdata->base + ECC_BLK_WDATA1_OFST); | |
1762 | writel(0x0, drvdata->base + ECC_BLK_WDATA2_OFST); | |
1763 | writel(0x0, drvdata->base + ECC_BLK_WDATA3_OFST); | |
1764 | /* Setup write of 4 bytes */ | |
1765 | writel(ECC_WORD_WRITE, drvdata->base + ECC_BLK_DBYTECTRL_OFST); | |
1766 | /* Setup Address to 0 */ | |
1767 | writel(0x0, drvdata->base + ECC_BLK_ADDRESS_OFST); | |
1768 | /* Setup accctrl to write & data override */ | |
1769 | writel(ECC_WRITE_DOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST); | |
1770 | /* Kick it. */ | |
1771 | writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST); | |
1772 | /* Setup accctrl to read & ecc override */ | |
1773 | writel(ECC_READ_EOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST); | |
1774 | /* Kick it. */ | |
1775 | writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST); | |
1776 | /* Setup write for single bit change */ | |
1777 | writel(0x1, drvdata->base + ECC_BLK_WDATA0_OFST); | |
1778 | writel(0x0, drvdata->base + ECC_BLK_WDATA1_OFST); | |
1779 | writel(0x0, drvdata->base + ECC_BLK_WDATA2_OFST); | |
1780 | writel(0x0, drvdata->base + ECC_BLK_WDATA3_OFST); | |
1781 | /* Copy Read ECC to Write ECC */ | |
1782 | writel(readl(drvdata->base + ECC_BLK_RECC0_OFST), | |
1783 | drvdata->base + ECC_BLK_WECC0_OFST); | |
1784 | writel(readl(drvdata->base + ECC_BLK_RECC1_OFST), | |
1785 | drvdata->base + ECC_BLK_WECC1_OFST); | |
1786 | /* Setup accctrl to write & ecc override & data override */ | |
1787 | writel(ECC_WRITE_EDOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST); | |
1788 | /* Kick it. */ | |
1789 | writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST); | |
1790 | /* Setup accctrl to read & ecc overwrite & data overwrite */ | |
1791 | writel(ECC_READ_EDOVR, drvdata->base + ECC_BLK_ACCCTRL_OFST); | |
1792 | /* Kick it. */ | |
1793 | writel(ECC_XACT_KICK, drvdata->base + ECC_BLK_STARTACC_OFST); | |
1794 | } | |
1795 | ||
c7b4be8d TT |
1796 | /* Ensure the interrupt test bits are set */ |
1797 | wmb(); | |
1798 | local_irq_restore(flags); | |
1799 | ||
1800 | return count; | |
1801 | } | |
1802 | ||
13ab8448 | 1803 | static void altr_edac_a10_irq_handler(struct irq_desc *desc) |
588cb03e | 1804 | { |
13ab8448 TT |
1805 | int dberr, bit, sm_offset, irq_status; |
1806 | struct altr_arria10_edac *edac = irq_desc_get_handler_data(desc); | |
1807 | struct irq_chip *chip = irq_desc_get_chip(desc); | |
1808 | int irq = irq_desc_get_irq(desc); | |
1809 | ||
1810 | dberr = (irq == edac->db_irq) ? 1 : 0; | |
1811 | sm_offset = dberr ? A10_SYSMGR_ECC_INTSTAT_DERR_OFST : | |
1812 | A10_SYSMGR_ECC_INTSTAT_SERR_OFST; | |
1813 | ||
1814 | chained_irq_enter(chip, desc); | |
588cb03e TT |
1815 | |
1816 | regmap_read(edac->ecc_mgr_map, sm_offset, &irq_status); | |
1817 | ||
13ab8448 TT |
1818 | for_each_set_bit(bit, (unsigned long *)&irq_status, 32) { |
1819 | irq = irq_linear_revmap(edac->domain, dberr * 32 + bit); | |
1820 | if (irq) | |
1821 | generic_handle_irq(irq); | |
588cb03e TT |
1822 | } |
1823 | ||
13ab8448 | 1824 | chained_irq_exit(chip, desc); |
588cb03e TT |
1825 | } |
1826 | ||
44ec9b30 TT |
1827 | static int validate_parent_available(struct device_node *np) |
1828 | { | |
1829 | struct device_node *parent; | |
1830 | int ret = 0; | |
1831 | ||
1832 | /* Ensure parent device is enabled if parent node exists */ | |
1833 | parent = of_parse_phandle(np, "altr,ecc-parent", 0); | |
1834 | if (parent && !of_device_is_available(parent)) | |
1835 | ret = -ENODEV; | |
1836 | ||
1837 | of_node_put(parent); | |
1838 | return ret; | |
1839 | } | |
1840 | ||
588cb03e TT |
1841 | static int altr_edac_a10_device_add(struct altr_arria10_edac *edac, |
1842 | struct device_node *np) | |
1843 | { | |
1844 | struct edac_device_ctl_info *dci; | |
1845 | struct altr_edac_device_dev *altdev; | |
1846 | char *ecc_name = (char *)np->name; | |
1847 | struct resource res; | |
1848 | int edac_idx; | |
1849 | int rc = 0; | |
1850 | const struct edac_device_prv_data *prv; | |
1851 | /* Get matching node and check for valid result */ | |
1852 | const struct of_device_id *pdev_id = | |
ab564cb5 | 1853 | of_match_node(altr_edac_a10_device_of_match, np); |
588cb03e TT |
1854 | if (IS_ERR_OR_NULL(pdev_id)) |
1855 | return -ENODEV; | |
1856 | ||
1857 | /* Get driver specific data for this EDAC device */ | |
1858 | prv = pdev_id->data; | |
1859 | if (IS_ERR_OR_NULL(prv)) | |
1860 | return -ENODEV; | |
1861 | ||
44ec9b30 TT |
1862 | if (validate_parent_available(np)) |
1863 | return -ENODEV; | |
1864 | ||
588cb03e TT |
1865 | if (!devres_open_group(edac->dev, altr_edac_a10_device_add, GFP_KERNEL)) |
1866 | return -ENOMEM; | |
1867 | ||
1868 | rc = of_address_to_resource(np, 0, &res); | |
1869 | if (rc < 0) { | |
1870 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1871 | "%s: no resource address\n", ecc_name); | |
1872 | goto err_release_group; | |
1873 | } | |
1874 | ||
1875 | edac_idx = edac_device_alloc_index(); | |
1876 | dci = edac_device_alloc_ctl_info(sizeof(*altdev), ecc_name, | |
1877 | 1, ecc_name, 1, 0, NULL, 0, | |
1878 | edac_idx); | |
1879 | ||
1880 | if (!dci) { | |
1881 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1882 | "%s: Unable to allocate EDAC device\n", ecc_name); | |
1883 | rc = -ENOMEM; | |
1884 | goto err_release_group; | |
1885 | } | |
1886 | ||
1887 | altdev = dci->pvt_info; | |
1888 | dci->dev = edac->dev; | |
1889 | altdev->edac_dev_name = ecc_name; | |
1890 | altdev->edac_idx = edac_idx; | |
1891 | altdev->edac = edac; | |
1892 | altdev->edac_dev = dci; | |
1893 | altdev->data = prv; | |
1894 | altdev->ddev = *edac->dev; | |
1895 | dci->dev = &altdev->ddev; | |
1896 | dci->ctl_name = "Altera ECC Manager"; | |
1897 | dci->mod_name = ecc_name; | |
1898 | dci->dev_name = ecc_name; | |
1899 | ||
1900 | altdev->base = devm_ioremap_resource(edac->dev, &res); | |
1901 | if (IS_ERR(altdev->base)) { | |
1902 | rc = PTR_ERR(altdev->base); | |
1903 | goto err_release_group1; | |
1904 | } | |
1905 | ||
1906 | /* Check specific dependencies for the module */ | |
1907 | if (altdev->data->setup) { | |
1908 | rc = altdev->data->setup(altdev); | |
1909 | if (rc) | |
1910 | goto err_release_group1; | |
1911 | } | |
1912 | ||
13ab8448 TT |
1913 | altdev->sb_irq = irq_of_parse_and_map(np, 0); |
1914 | if (!altdev->sb_irq) { | |
1915 | edac_printk(KERN_ERR, EDAC_DEVICE, "Error allocating SBIRQ\n"); | |
1916 | rc = -ENODEV; | |
1917 | goto err_release_group1; | |
1918 | } | |
a29d64a4 TT |
1919 | rc = devm_request_irq(edac->dev, altdev->sb_irq, prv->ecc_irq_handler, |
1920 | IRQF_ONESHOT | IRQF_TRIGGER_HIGH, | |
1921 | ecc_name, altdev); | |
13ab8448 | 1922 | if (rc) { |
3763569f | 1923 | edac_printk(KERN_ERR, EDAC_DEVICE, "No SBERR IRQ resource\n"); |
13ab8448 TT |
1924 | goto err_release_group1; |
1925 | } | |
1926 | ||
1927 | altdev->db_irq = irq_of_parse_and_map(np, 1); | |
1928 | if (!altdev->db_irq) { | |
1929 | edac_printk(KERN_ERR, EDAC_DEVICE, "Error allocating DBIRQ\n"); | |
1930 | rc = -ENODEV; | |
1931 | goto err_release_group1; | |
1932 | } | |
a29d64a4 TT |
1933 | rc = devm_request_irq(edac->dev, altdev->db_irq, prv->ecc_irq_handler, |
1934 | IRQF_ONESHOT | IRQF_TRIGGER_HIGH, | |
1935 | ecc_name, altdev); | |
13ab8448 TT |
1936 | if (rc) { |
1937 | edac_printk(KERN_ERR, EDAC_DEVICE, "No DBERR IRQ resource\n"); | |
1938 | goto err_release_group1; | |
1939 | } | |
1940 | ||
588cb03e TT |
1941 | rc = edac_device_add_device(dci); |
1942 | if (rc) { | |
1943 | dev_err(edac->dev, "edac_device_add_device failed\n"); | |
1944 | rc = -ENOMEM; | |
1945 | goto err_release_group1; | |
1946 | } | |
1947 | ||
1948 | altr_create_edacdev_dbgfs(dci, prv); | |
1949 | ||
1950 | list_add(&altdev->next, &edac->a10_ecc_devices); | |
1951 | ||
1952 | devres_remove_group(edac->dev, altr_edac_a10_device_add); | |
1953 | ||
1954 | return 0; | |
1955 | ||
1956 | err_release_group1: | |
1957 | edac_device_free_ctl_info(dci); | |
1958 | err_release_group: | |
588cb03e TT |
1959 | devres_release_group(edac->dev, NULL); |
1960 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
1961 | "%s:Error setting up EDAC device: %d\n", ecc_name, rc); | |
1962 | ||
1963 | return rc; | |
1964 | } | |
1965 | ||
13ab8448 TT |
1966 | static void a10_eccmgr_irq_mask(struct irq_data *d) |
1967 | { | |
1968 | struct altr_arria10_edac *edac = irq_data_get_irq_chip_data(d); | |
1969 | ||
1970 | regmap_write(edac->ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_SET_OFST, | |
1971 | BIT(d->hwirq)); | |
1972 | } | |
1973 | ||
1974 | static void a10_eccmgr_irq_unmask(struct irq_data *d) | |
1975 | { | |
1976 | struct altr_arria10_edac *edac = irq_data_get_irq_chip_data(d); | |
1977 | ||
1978 | regmap_write(edac->ecc_mgr_map, A10_SYSMGR_ECC_INTMASK_CLR_OFST, | |
1979 | BIT(d->hwirq)); | |
1980 | } | |
1981 | ||
1982 | static int a10_eccmgr_irqdomain_map(struct irq_domain *d, unsigned int irq, | |
1983 | irq_hw_number_t hwirq) | |
1984 | { | |
1985 | struct altr_arria10_edac *edac = d->host_data; | |
1986 | ||
1987 | irq_set_chip_and_handler(irq, &edac->irq_chip, handle_simple_irq); | |
1988 | irq_set_chip_data(irq, edac); | |
1989 | irq_set_noprobe(irq); | |
1990 | ||
1991 | return 0; | |
1992 | } | |
1993 | ||
18caec20 | 1994 | static const struct irq_domain_ops a10_eccmgr_ic_ops = { |
13ab8448 TT |
1995 | .map = a10_eccmgr_irqdomain_map, |
1996 | .xlate = irq_domain_xlate_twocell, | |
1997 | }; | |
1998 | ||
d5fc9125 TT |
1999 | /************** Stratix 10 EDAC Double Bit Error Handler ************/ |
2000 | #define to_a10edac(p, m) container_of(p, struct altr_arria10_edac, m) | |
2001 | ||
2002 | /* | |
2003 | * The double bit error is handled through SError which is fatal. This is | |
2004 | * called as a panic notifier to printout ECC error info as part of the panic. | |
2005 | */ | |
2006 | static int s10_edac_dberr_handler(struct notifier_block *this, | |
2007 | unsigned long event, void *ptr) | |
2008 | { | |
2009 | struct altr_arria10_edac *edac = to_a10edac(this, panic_notifier); | |
2010 | int err_addr, dberror; | |
2011 | ||
2012 | regmap_read(edac->ecc_mgr_map, S10_SYSMGR_ECC_INTSTAT_DERR_OFST, | |
2013 | &dberror); | |
2014 | regmap_write(edac->ecc_mgr_map, S10_SYSMGR_UE_VAL_OFST, dberror); | |
2015 | if (dberror & S10_DDR0_IRQ_MASK) { | |
08f08bfb | 2016 | regmap_read(edac->ecc_mgr_map, A10_DERRADDR_OFST, &err_addr); |
d5fc9125 TT |
2017 | regmap_write(edac->ecc_mgr_map, S10_SYSMGR_UE_ADDR_OFST, |
2018 | err_addr); | |
2019 | edac_printk(KERN_ERR, EDAC_MC, | |
2020 | "EDAC: [Uncorrectable errors @ 0x%08X]\n\n", | |
2021 | err_addr); | |
2022 | } | |
2023 | ||
2024 | return NOTIFY_DONE; | |
2025 | } | |
2026 | ||
2027 | /****************** Arria 10 EDAC Probe Function *********************/ | |
588cb03e TT |
2028 | static int altr_edac_a10_probe(struct platform_device *pdev) |
2029 | { | |
2030 | struct altr_arria10_edac *edac; | |
2031 | struct device_node *child; | |
588cb03e TT |
2032 | |
2033 | edac = devm_kzalloc(&pdev->dev, sizeof(*edac), GFP_KERNEL); | |
2034 | if (!edac) | |
2035 | return -ENOMEM; | |
2036 | ||
2037 | edac->dev = &pdev->dev; | |
2038 | platform_set_drvdata(pdev, edac); | |
2039 | INIT_LIST_HEAD(&edac->a10_ecc_devices); | |
2040 | ||
d5fc9125 TT |
2041 | if (socfpga_is_a10()) { |
2042 | edac->ecc_mgr_map = | |
2043 | syscon_regmap_lookup_by_phandle(pdev->dev.of_node, | |
588cb03e | 2044 | "altr,sysmgr-syscon"); |
d5fc9125 TT |
2045 | } else { |
2046 | struct device_node *sysmgr_np; | |
2047 | struct resource res; | |
8537bf10 | 2048 | uintptr_t base; |
d5fc9125 TT |
2049 | |
2050 | sysmgr_np = of_parse_phandle(pdev->dev.of_node, | |
2051 | "altr,sysmgr-syscon", 0); | |
2052 | if (!sysmgr_np) { | |
2053 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
2054 | "Unable to find altr,sysmgr-syscon\n"); | |
2055 | return -ENODEV; | |
2056 | } | |
2057 | ||
2058 | if (of_address_to_resource(sysmgr_np, 0, &res)) | |
2059 | return -ENOMEM; | |
2060 | ||
2061 | /* Need physical address for SMCC call */ | |
8537bf10 | 2062 | base = res.start; |
d5fc9125 | 2063 | |
8537bf10 AB |
2064 | edac->ecc_mgr_map = devm_regmap_init(&pdev->dev, NULL, |
2065 | (void *)base, | |
d5fc9125 TT |
2066 | &s10_sdram_regmap_cfg); |
2067 | } | |
2068 | ||
588cb03e TT |
2069 | if (IS_ERR(edac->ecc_mgr_map)) { |
2070 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
2071 | "Unable to get syscon altr,sysmgr-syscon\n"); | |
2072 | return PTR_ERR(edac->ecc_mgr_map); | |
2073 | } | |
2074 | ||
13ab8448 TT |
2075 | edac->irq_chip.name = pdev->dev.of_node->name; |
2076 | edac->irq_chip.irq_mask = a10_eccmgr_irq_mask; | |
2077 | edac->irq_chip.irq_unmask = a10_eccmgr_irq_unmask; | |
2078 | edac->domain = irq_domain_add_linear(pdev->dev.of_node, 64, | |
2079 | &a10_eccmgr_ic_ops, edac); | |
2080 | if (!edac->domain) { | |
2081 | dev_err(&pdev->dev, "Error adding IRQ domain\n"); | |
2082 | return -ENOMEM; | |
2083 | } | |
2084 | ||
588cb03e | 2085 | edac->sb_irq = platform_get_irq(pdev, 0); |
13ab8448 TT |
2086 | if (edac->sb_irq < 0) { |
2087 | dev_err(&pdev->dev, "No SBERR IRQ resource\n"); | |
2088 | return edac->sb_irq; | |
588cb03e TT |
2089 | } |
2090 | ||
13ab8448 TT |
2091 | irq_set_chained_handler_and_data(edac->sb_irq, |
2092 | altr_edac_a10_irq_handler, | |
2093 | edac); | |
2094 | ||
d5fc9125 TT |
2095 | if (socfpga_is_a10()) { |
2096 | edac->db_irq = platform_get_irq(pdev, 1); | |
2097 | if (edac->db_irq < 0) { | |
2098 | dev_err(&pdev->dev, "No DBERR IRQ resource\n"); | |
2099 | return edac->db_irq; | |
2100 | } | |
2101 | irq_set_chained_handler_and_data(edac->db_irq, | |
2102 | altr_edac_a10_irq_handler, | |
2103 | edac); | |
2104 | } else { | |
2105 | int dberror, err_addr; | |
2106 | ||
2107 | edac->panic_notifier.notifier_call = s10_edac_dberr_handler; | |
2108 | atomic_notifier_chain_register(&panic_notifier_list, | |
2109 | &edac->panic_notifier); | |
2110 | ||
2111 | /* Printout a message if uncorrectable error previously. */ | |
2112 | regmap_read(edac->ecc_mgr_map, S10_SYSMGR_UE_VAL_OFST, | |
2113 | &dberror); | |
2114 | if (dberror) { | |
2115 | regmap_read(edac->ecc_mgr_map, S10_SYSMGR_UE_ADDR_OFST, | |
2116 | &err_addr); | |
2117 | edac_printk(KERN_ERR, EDAC_DEVICE, | |
2118 | "Previous Boot UE detected[0x%X] @ 0x%X\n", | |
2119 | dberror, err_addr); | |
2120 | /* Reset the sticky registers */ | |
2121 | regmap_write(edac->ecc_mgr_map, | |
2122 | S10_SYSMGR_UE_VAL_OFST, 0); | |
2123 | regmap_write(edac->ecc_mgr_map, | |
2124 | S10_SYSMGR_UE_ADDR_OFST, 0); | |
2125 | } | |
588cb03e TT |
2126 | } |
2127 | ||
2128 | for_each_child_of_node(pdev->dev.of_node, child) { | |
2129 | if (!of_device_is_available(child)) | |
2130 | continue; | |
c6882fb2 TT |
2131 | |
2132 | if (of_device_is_compatible(child, "altr,socfpga-a10-l2-ecc") || | |
2133 | of_device_is_compatible(child, "altr,socfpga-a10-ocram-ecc") || | |
2134 | of_device_is_compatible(child, "altr,socfpga-eth-mac-ecc") || | |
e8263793 | 2135 | of_device_is_compatible(child, "altr,socfpga-nand-ecc") || |
c609581d | 2136 | of_device_is_compatible(child, "altr,socfpga-dma-ecc") || |
485fe9e2 | 2137 | of_device_is_compatible(child, "altr,socfpga-usb-ecc") || |
91104984 TT |
2138 | of_device_is_compatible(child, "altr,socfpga-qspi-ecc") || |
2139 | of_device_is_compatible(child, "altr,socfpga-sdmmc-ecc")) | |
c6882fb2 | 2140 | |
c7b4be8d | 2141 | altr_edac_a10_device_add(edac, child); |
c6882fb2 | 2142 | |
d5fc9125 TT |
2143 | else if ((of_device_is_compatible(child, "altr,sdram-edac-a10")) || |
2144 | (of_device_is_compatible(child, "altr,sdram-edac-s10"))) | |
ab564cb5 TT |
2145 | of_platform_populate(pdev->dev.of_node, |
2146 | altr_sdram_ctrl_of_match, | |
2147 | NULL, &pdev->dev); | |
588cb03e TT |
2148 | } |
2149 | ||
2150 | return 0; | |
2151 | } | |
2152 | ||
2153 | static const struct of_device_id altr_edac_a10_of_match[] = { | |
2154 | { .compatible = "altr,socfpga-a10-ecc-manager" }, | |
d5fc9125 | 2155 | { .compatible = "altr,socfpga-s10-ecc-manager" }, |
588cb03e TT |
2156 | {}, |
2157 | }; | |
2158 | MODULE_DEVICE_TABLE(of, altr_edac_a10_of_match); | |
2159 | ||
2160 | static struct platform_driver altr_edac_a10_driver = { | |
2161 | .probe = altr_edac_a10_probe, | |
2162 | .driver = { | |
2163 | .name = "socfpga_a10_ecc_manager", | |
2164 | .of_match_table = altr_edac_a10_of_match, | |
2165 | }, | |
2166 | }; | |
2167 | module_platform_driver(altr_edac_a10_driver); | |
2168 | ||
71bcada8 TT |
2169 | MODULE_LICENSE("GPL v2"); |
2170 | MODULE_AUTHOR("Thor Thayer"); | |
c3eea194 | 2171 | MODULE_DESCRIPTION("EDAC Driver for Altera Memories"); |